2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
14 #include <openssl/objects.h>
15 #include <openssl/lhash.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/ocsp.h>
19 #include <openssl/dh.h>
20 #include <openssl/engine.h>
21 #include <openssl/async.h>
22 #include <openssl/ct.h>
24 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
26 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
28 * evil casts, but these functions are only called if there's a library
31 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
32 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
33 ssl_undefined_function
,
34 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
35 ssl_undefined_function
,
36 (int (*)(SSL
*, int))ssl_undefined_function
,
37 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
38 ssl_undefined_function
,
39 NULL
, /* client_finished_label */
40 0, /* client_finished_label_len */
41 NULL
, /* server_finished_label */
42 0, /* server_finished_label_len */
43 (int (*)(int))ssl_undefined_function
,
44 (int (*)(SSL
*, unsigned char *, size_t, const char *,
45 size_t, const unsigned char *, size_t,
46 int use_context
))ssl_undefined_function
,
49 struct ssl_async_args
{
53 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
55 int (*func_read
) (SSL
*, void *, size_t, size_t *);
56 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
57 int (*func_other
) (SSL
*);
67 DANETLS_MATCHING_FULL
, 0, NID_undef
70 DANETLS_MATCHING_2256
, 1, NID_sha256
73 DANETLS_MATCHING_2512
, 2, NID_sha512
77 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
81 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
82 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
85 if (dctx
->mdevp
!= NULL
)
88 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
89 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
91 if (mdord
== NULL
|| mdevp
== NULL
) {
94 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
98 /* Install default entries */
99 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
102 if (dane_mds
[i
].nid
== NID_undef
||
103 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
105 mdevp
[dane_mds
[i
].mtype
] = md
;
106 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
116 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
118 OPENSSL_free(dctx
->mdevp
);
121 OPENSSL_free(dctx
->mdord
);
126 static void tlsa_free(danetls_record
*t
)
130 OPENSSL_free(t
->data
);
131 EVP_PKEY_free(t
->spki
);
135 static void dane_final(SSL_DANE
*dane
)
137 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
140 sk_X509_pop_free(dane
->certs
, X509_free
);
143 X509_free(dane
->mcert
);
151 * dane_copy - Copy dane configuration, sans verification state.
153 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
158 if (!DANETLS_ENABLED(&from
->dane
))
161 dane_final(&to
->dane
);
162 to
->dane
.flags
= from
->dane
.flags
;
163 to
->dane
.dctx
= &to
->ctx
->dane
;
164 to
->dane
.trecs
= sk_danetls_record_new_null();
166 if (to
->dane
.trecs
== NULL
) {
167 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
171 num
= sk_danetls_record_num(from
->dane
.trecs
);
172 for (i
= 0; i
< num
; ++i
) {
173 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
175 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
176 t
->data
, t
->dlen
) <= 0)
182 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
183 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
187 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
188 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
192 if (mtype
> dctx
->mdmax
) {
193 const EVP_MD
**mdevp
;
195 int n
= ((int)mtype
) + 1;
197 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
199 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
204 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
206 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
211 /* Zero-fill any gaps */
212 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
220 dctx
->mdevp
[mtype
] = md
;
221 /* Coerce ordinal of disabled matching types to 0 */
222 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
227 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
229 if (mtype
> dane
->dctx
->mdmax
)
231 return dane
->dctx
->mdevp
[mtype
];
234 static int dane_tlsa_add(SSL_DANE
*dane
,
237 uint8_t mtype
, unsigned char *data
, size_t dlen
)
240 const EVP_MD
*md
= NULL
;
241 int ilen
= (int)dlen
;
245 if (dane
->trecs
== NULL
) {
246 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
250 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
251 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
255 if (usage
> DANETLS_USAGE_LAST
) {
256 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
260 if (selector
> DANETLS_SELECTOR_LAST
) {
261 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
265 if (mtype
!= DANETLS_MATCHING_FULL
) {
266 md
= tlsa_md_get(dane
, mtype
);
268 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
273 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
274 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
278 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
282 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
283 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
288 t
->selector
= selector
;
290 t
->data
= OPENSSL_malloc(dlen
);
291 if (t
->data
== NULL
) {
293 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
296 memcpy(t
->data
, data
, dlen
);
299 /* Validate and cache full certificate or public key */
300 if (mtype
== DANETLS_MATCHING_FULL
) {
301 const unsigned char *p
= data
;
303 EVP_PKEY
*pkey
= NULL
;
306 case DANETLS_SELECTOR_CERT
:
307 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
308 dlen
!= (size_t)(p
- data
)) {
310 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
313 if (X509_get0_pubkey(cert
) == NULL
) {
315 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
319 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
325 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
326 * records that contain full certificates of trust-anchors that are
327 * not present in the wire chain. For usage PKIX-TA(0), we augment
328 * the chain with untrusted Full(0) certificates from DNS, in case
329 * they are missing from the chain.
331 if ((dane
->certs
== NULL
&&
332 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
333 !sk_X509_push(dane
->certs
, cert
)) {
334 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
341 case DANETLS_SELECTOR_SPKI
:
342 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
343 dlen
!= (size_t)(p
- data
)) {
345 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
350 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
351 * records that contain full bare keys of trust-anchors that are
352 * not present in the wire chain.
354 if (usage
== DANETLS_USAGE_DANE_TA
)
363 * Find the right insertion point for the new record.
365 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
366 * they can be processed first, as they require no chain building, and no
367 * expiration or hostname checks. Because DANE-EE(3) is numerically
368 * largest, this is accomplished via descending sort by "usage".
370 * We also sort in descending order by matching ordinal to simplify
371 * the implementation of digest agility in the verification code.
373 * The choice of order for the selector is not significant, so we
374 * use the same descending order for consistency.
376 num
= sk_danetls_record_num(dane
->trecs
);
377 for (i
= 0; i
< num
; ++i
) {
378 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
380 if (rec
->usage
> usage
)
382 if (rec
->usage
< usage
)
384 if (rec
->selector
> selector
)
386 if (rec
->selector
< selector
)
388 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
393 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
395 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
398 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
403 static void clear_ciphers(SSL
*s
)
405 /* clear the current cipher */
406 ssl_clear_cipher_ctx(s
);
407 ssl_clear_hash_ctx(&s
->read_hash
);
408 ssl_clear_hash_ctx(&s
->write_hash
);
411 int SSL_clear(SSL
*s
)
413 if (s
->method
== NULL
) {
414 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
418 if (ssl_clear_bad_session(s
)) {
419 SSL_SESSION_free(s
->session
);
422 SSL_SESSION_free(s
->psksession
);
423 s
->psksession
= NULL
;
429 if (s
->renegotiate
) {
430 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
434 ossl_statem_clear(s
);
436 s
->version
= s
->method
->version
;
437 s
->client_version
= s
->version
;
438 s
->rwstate
= SSL_NOTHING
;
440 BUF_MEM_free(s
->init_buf
);
445 s
->key_update
= SSL_KEY_UPDATE_NONE
;
447 /* Reset DANE verification result state */
450 X509_free(s
->dane
.mcert
);
451 s
->dane
.mcert
= NULL
;
452 s
->dane
.mtlsa
= NULL
;
454 /* Clear the verification result peername */
455 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
458 * Check to see if we were changed into a different method, if so, revert
459 * back if we are not doing session-id reuse.
461 if (!ossl_statem_get_in_handshake(s
) && (s
->session
== NULL
)
462 && (s
->method
!= s
->ctx
->method
)) {
463 s
->method
->ssl_free(s
);
464 s
->method
= s
->ctx
->method
;
465 if (!s
->method
->ssl_new(s
))
468 if (!s
->method
->ssl_clear(s
))
472 RECORD_LAYER_clear(&s
->rlayer
);
477 /** Used to change an SSL_CTXs default SSL method type */
478 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
480 STACK_OF(SSL_CIPHER
) *sk
;
484 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
485 &(ctx
->cipher_list_by_id
),
486 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
487 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
488 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
494 SSL
*SSL_new(SSL_CTX
*ctx
)
499 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
502 if (ctx
->method
== NULL
) {
503 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
507 s
= OPENSSL_zalloc(sizeof(*s
));
511 s
->lock
= CRYPTO_THREAD_lock_new();
512 if (s
->lock
== NULL
) {
513 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
518 RECORD_LAYER_init(&s
->rlayer
, s
);
520 s
->options
= ctx
->options
;
521 s
->dane
.flags
= ctx
->dane
.flags
;
522 s
->min_proto_version
= ctx
->min_proto_version
;
523 s
->max_proto_version
= ctx
->max_proto_version
;
525 s
->max_cert_list
= ctx
->max_cert_list
;
527 s
->max_early_data
= ctx
->max_early_data
;
530 * Earlier library versions used to copy the pointer to the CERT, not
531 * its contents; only when setting new parameters for the per-SSL
532 * copy, ssl_cert_new would be called (and the direct reference to
533 * the per-SSL_CTX settings would be lost, but those still were
534 * indirectly accessed for various purposes, and for that reason they
535 * used to be known as s->ctx->default_cert). Now we don't look at the
536 * SSL_CTX's CERT after having duplicated it once.
538 s
->cert
= ssl_cert_dup(ctx
->cert
);
542 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
543 s
->msg_callback
= ctx
->msg_callback
;
544 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
545 s
->verify_mode
= ctx
->verify_mode
;
546 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
547 s
->record_padding_cb
= ctx
->record_padding_cb
;
548 s
->record_padding_arg
= ctx
->record_padding_arg
;
549 s
->block_padding
= ctx
->block_padding
;
550 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
551 if (!ossl_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
))
553 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
554 s
->verify_callback
= ctx
->default_verify_callback
;
555 s
->generate_session_id
= ctx
->generate_session_id
;
557 s
->param
= X509_VERIFY_PARAM_new();
558 if (s
->param
== NULL
)
560 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
561 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
562 s
->max_send_fragment
= ctx
->max_send_fragment
;
563 s
->split_send_fragment
= ctx
->split_send_fragment
;
564 s
->max_pipelines
= ctx
->max_pipelines
;
565 if (s
->max_pipelines
> 1)
566 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
567 if (ctx
->default_read_buf_len
> 0)
568 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
573 s
->ext
.debug_arg
= NULL
;
574 s
->ext
.ticket_expected
= 0;
575 s
->ext
.status_type
= ctx
->ext
.status_type
;
576 s
->ext
.status_expected
= 0;
577 s
->ext
.ocsp
.ids
= NULL
;
578 s
->ext
.ocsp
.exts
= NULL
;
579 s
->ext
.ocsp
.resp
= NULL
;
580 s
->ext
.ocsp
.resp_len
= 0;
582 s
->session_ctx
= ctx
;
583 #ifndef OPENSSL_NO_EC
584 if (ctx
->ext
.ecpointformats
) {
585 s
->ext
.ecpointformats
=
586 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
587 ctx
->ext
.ecpointformats_len
);
588 if (!s
->ext
.ecpointformats
)
590 s
->ext
.ecpointformats_len
=
591 ctx
->ext
.ecpointformats_len
;
593 if (ctx
->ext
.supportedgroups
) {
594 s
->ext
.supportedgroups
=
595 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
596 ctx
->ext
.supportedgroups_len
);
597 if (!s
->ext
.supportedgroups
)
599 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
602 #ifndef OPENSSL_NO_NEXTPROTONEG
606 if (s
->ctx
->ext
.alpn
) {
607 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
608 if (s
->ext
.alpn
== NULL
)
610 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
611 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
614 s
->verified_chain
= NULL
;
615 s
->verify_result
= X509_V_OK
;
617 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
618 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
620 s
->method
= ctx
->method
;
622 s
->key_update
= SSL_KEY_UPDATE_NONE
;
624 if (!s
->method
->ssl_new(s
))
627 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
632 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
635 #ifndef OPENSSL_NO_PSK
636 s
->psk_client_callback
= ctx
->psk_client_callback
;
637 s
->psk_server_callback
= ctx
->psk_server_callback
;
642 #ifndef OPENSSL_NO_CT
643 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
644 ctx
->ct_validation_callback_arg
))
651 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
655 int SSL_is_dtls(const SSL
*s
)
657 return SSL_IS_DTLS(s
) ? 1 : 0;
660 int SSL_up_ref(SSL
*s
)
664 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
667 REF_PRINT_COUNT("SSL", s
);
668 REF_ASSERT_ISNT(i
< 2);
669 return ((i
> 1) ? 1 : 0);
672 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
673 unsigned int sid_ctx_len
)
675 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
676 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
677 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
680 ctx
->sid_ctx_length
= sid_ctx_len
;
681 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
686 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
687 unsigned int sid_ctx_len
)
689 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
690 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
691 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
694 ssl
->sid_ctx_length
= sid_ctx_len
;
695 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
700 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
702 CRYPTO_THREAD_write_lock(ctx
->lock
);
703 ctx
->generate_session_id
= cb
;
704 CRYPTO_THREAD_unlock(ctx
->lock
);
708 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
710 CRYPTO_THREAD_write_lock(ssl
->lock
);
711 ssl
->generate_session_id
= cb
;
712 CRYPTO_THREAD_unlock(ssl
->lock
);
716 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
720 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
721 * we can "construct" a session to give us the desired check - i.e. to
722 * find if there's a session in the hash table that would conflict with
723 * any new session built out of this id/id_len and the ssl_version in use
728 if (id_len
> sizeof r
.session_id
)
731 r
.ssl_version
= ssl
->version
;
732 r
.session_id_length
= id_len
;
733 memcpy(r
.session_id
, id
, id_len
);
735 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
736 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
737 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
741 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
743 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
746 int SSL_set_purpose(SSL
*s
, int purpose
)
748 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
751 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
753 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
756 int SSL_set_trust(SSL
*s
, int trust
)
758 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
761 int SSL_set1_host(SSL
*s
, const char *hostname
)
763 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
766 int SSL_add1_host(SSL
*s
, const char *hostname
)
768 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
771 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
773 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
776 const char *SSL_get0_peername(SSL
*s
)
778 return X509_VERIFY_PARAM_get0_peername(s
->param
);
781 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
783 return dane_ctx_enable(&ctx
->dane
);
786 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
788 unsigned long orig
= ctx
->dane
.flags
;
790 ctx
->dane
.flags
|= flags
;
794 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
796 unsigned long orig
= ctx
->dane
.flags
;
798 ctx
->dane
.flags
&= ~flags
;
802 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
804 SSL_DANE
*dane
= &s
->dane
;
806 if (s
->ctx
->dane
.mdmax
== 0) {
807 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
810 if (dane
->trecs
!= NULL
) {
811 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
816 * Default SNI name. This rejects empty names, while set1_host below
817 * accepts them and disables host name checks. To avoid side-effects with
818 * invalid input, set the SNI name first.
820 if (s
->ext
.hostname
== NULL
) {
821 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
822 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
827 /* Primary RFC6125 reference identifier */
828 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
829 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
835 dane
->dctx
= &s
->ctx
->dane
;
836 dane
->trecs
= sk_danetls_record_new_null();
838 if (dane
->trecs
== NULL
) {
839 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
845 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
847 unsigned long orig
= ssl
->dane
.flags
;
849 ssl
->dane
.flags
|= flags
;
853 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
855 unsigned long orig
= ssl
->dane
.flags
;
857 ssl
->dane
.flags
&= ~flags
;
861 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
863 SSL_DANE
*dane
= &s
->dane
;
865 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
869 *mcert
= dane
->mcert
;
871 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
876 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
877 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
879 SSL_DANE
*dane
= &s
->dane
;
881 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
885 *usage
= dane
->mtlsa
->usage
;
887 *selector
= dane
->mtlsa
->selector
;
889 *mtype
= dane
->mtlsa
->mtype
;
891 *data
= dane
->mtlsa
->data
;
893 *dlen
= dane
->mtlsa
->dlen
;
898 SSL_DANE
*SSL_get0_dane(SSL
*s
)
903 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
904 uint8_t mtype
, unsigned char *data
, size_t dlen
)
906 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
909 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
912 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
915 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
917 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
920 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
922 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
925 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
930 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
935 void SSL_certs_clear(SSL
*s
)
937 ssl_cert_clear_certs(s
->cert
);
940 void SSL_free(SSL
*s
)
947 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
948 REF_PRINT_COUNT("SSL", s
);
951 REF_ASSERT_ISNT(i
< 0);
953 X509_VERIFY_PARAM_free(s
->param
);
954 dane_final(&s
->dane
);
955 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
957 /* Ignore return value */
958 ssl_free_wbio_buffer(s
);
960 BIO_free_all(s
->wbio
);
961 BIO_free_all(s
->rbio
);
963 BUF_MEM_free(s
->init_buf
);
965 /* add extra stuff */
966 sk_SSL_CIPHER_free(s
->cipher_list
);
967 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
969 /* Make the next call work :-) */
970 if (s
->session
!= NULL
) {
971 ssl_clear_bad_session(s
);
972 SSL_SESSION_free(s
->session
);
974 SSL_SESSION_free(s
->psksession
);
978 ssl_cert_free(s
->cert
);
979 /* Free up if allocated */
981 OPENSSL_free(s
->ext
.hostname
);
982 SSL_CTX_free(s
->session_ctx
);
983 #ifndef OPENSSL_NO_EC
984 OPENSSL_free(s
->ext
.ecpointformats
);
985 OPENSSL_free(s
->ext
.supportedgroups
);
986 #endif /* OPENSSL_NO_EC */
987 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
988 #ifndef OPENSSL_NO_OCSP
989 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
991 #ifndef OPENSSL_NO_CT
992 SCT_LIST_free(s
->scts
);
993 OPENSSL_free(s
->ext
.scts
);
995 OPENSSL_free(s
->ext
.ocsp
.resp
);
996 OPENSSL_free(s
->ext
.alpn
);
997 OPENSSL_free(s
->ext
.tls13_cookie
);
998 OPENSSL_free(s
->clienthello
);
1000 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1002 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1004 if (s
->method
!= NULL
)
1005 s
->method
->ssl_free(s
);
1007 RECORD_LAYER_release(&s
->rlayer
);
1009 SSL_CTX_free(s
->ctx
);
1011 ASYNC_WAIT_CTX_free(s
->waitctx
);
1013 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1014 OPENSSL_free(s
->ext
.npn
);
1017 #ifndef OPENSSL_NO_SRTP
1018 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1021 CRYPTO_THREAD_lock_free(s
->lock
);
1026 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1028 BIO_free_all(s
->rbio
);
1032 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1035 * If the output buffering BIO is still in place, remove it
1037 if (s
->bbio
!= NULL
)
1038 s
->wbio
= BIO_pop(s
->wbio
);
1040 BIO_free_all(s
->wbio
);
1043 /* Re-attach |bbio| to the new |wbio|. */
1044 if (s
->bbio
!= NULL
)
1045 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1048 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1051 * For historical reasons, this function has many different cases in
1052 * ownership handling.
1055 /* If nothing has changed, do nothing */
1056 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1060 * If the two arguments are equal then one fewer reference is granted by the
1061 * caller than we want to take
1063 if (rbio
!= NULL
&& rbio
== wbio
)
1067 * If only the wbio is changed only adopt one reference.
1069 if (rbio
== SSL_get_rbio(s
)) {
1070 SSL_set0_wbio(s
, wbio
);
1074 * There is an asymmetry here for historical reasons. If only the rbio is
1075 * changed AND the rbio and wbio were originally different, then we only
1076 * adopt one reference.
1078 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1079 SSL_set0_rbio(s
, rbio
);
1083 /* Otherwise, adopt both references. */
1084 SSL_set0_rbio(s
, rbio
);
1085 SSL_set0_wbio(s
, wbio
);
1088 BIO
*SSL_get_rbio(const SSL
*s
)
1093 BIO
*SSL_get_wbio(const SSL
*s
)
1095 if (s
->bbio
!= NULL
) {
1097 * If |bbio| is active, the true caller-configured BIO is its
1100 return BIO_next(s
->bbio
);
1105 int SSL_get_fd(const SSL
*s
)
1107 return SSL_get_rfd(s
);
1110 int SSL_get_rfd(const SSL
*s
)
1115 b
= SSL_get_rbio(s
);
1116 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1118 BIO_get_fd(r
, &ret
);
1122 int SSL_get_wfd(const SSL
*s
)
1127 b
= SSL_get_wbio(s
);
1128 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1130 BIO_get_fd(r
, &ret
);
1134 #ifndef OPENSSL_NO_SOCK
1135 int SSL_set_fd(SSL
*s
, int fd
)
1140 bio
= BIO_new(BIO_s_socket());
1143 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1146 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1147 SSL_set_bio(s
, bio
, bio
);
1153 int SSL_set_wfd(SSL
*s
, int fd
)
1155 BIO
*rbio
= SSL_get_rbio(s
);
1157 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1158 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1159 BIO
*bio
= BIO_new(BIO_s_socket());
1162 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1165 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1166 SSL_set0_wbio(s
, bio
);
1169 SSL_set0_wbio(s
, rbio
);
1174 int SSL_set_rfd(SSL
*s
, int fd
)
1176 BIO
*wbio
= SSL_get_wbio(s
);
1178 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1179 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1180 BIO
*bio
= BIO_new(BIO_s_socket());
1183 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1186 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1187 SSL_set0_rbio(s
, bio
);
1190 SSL_set0_rbio(s
, wbio
);
1197 /* return length of latest Finished message we sent, copy to 'buf' */
1198 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1202 if (s
->s3
!= NULL
) {
1203 ret
= s
->s3
->tmp
.finish_md_len
;
1206 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1211 /* return length of latest Finished message we expected, copy to 'buf' */
1212 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1216 if (s
->s3
!= NULL
) {
1217 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1220 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1225 int SSL_get_verify_mode(const SSL
*s
)
1227 return (s
->verify_mode
);
1230 int SSL_get_verify_depth(const SSL
*s
)
1232 return X509_VERIFY_PARAM_get_depth(s
->param
);
1235 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1236 return (s
->verify_callback
);
1239 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1241 return (ctx
->verify_mode
);
1244 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1246 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1249 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1250 return (ctx
->default_verify_callback
);
1253 void SSL_set_verify(SSL
*s
, int mode
,
1254 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1256 s
->verify_mode
= mode
;
1257 if (callback
!= NULL
)
1258 s
->verify_callback
= callback
;
1261 void SSL_set_verify_depth(SSL
*s
, int depth
)
1263 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1266 void SSL_set_read_ahead(SSL
*s
, int yes
)
1268 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1271 int SSL_get_read_ahead(const SSL
*s
)
1273 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1276 int SSL_pending(const SSL
*s
)
1278 size_t pending
= s
->method
->ssl_pending(s
);
1281 * SSL_pending cannot work properly if read-ahead is enabled
1282 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1283 * impossible to fix since SSL_pending cannot report errors that may be
1284 * observed while scanning the new data. (Note that SSL_pending() is
1285 * often used as a boolean value, so we'd better not return -1.)
1287 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1288 * we just return INT_MAX.
1290 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1293 int SSL_has_pending(const SSL
*s
)
1296 * Similar to SSL_pending() but returns a 1 to indicate that we have
1297 * unprocessed data available or 0 otherwise (as opposed to the number of
1298 * bytes available). Unlike SSL_pending() this will take into account
1299 * read_ahead data. A 1 return simply indicates that we have unprocessed
1300 * data. That data may not result in any application data, or we may fail
1301 * to parse the records for some reason.
1303 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1306 return RECORD_LAYER_read_pending(&s
->rlayer
);
1309 X509
*SSL_get_peer_certificate(const SSL
*s
)
1313 if ((s
== NULL
) || (s
->session
== NULL
))
1316 r
= s
->session
->peer
;
1326 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1330 if ((s
== NULL
) || (s
->session
== NULL
))
1333 r
= s
->session
->peer_chain
;
1336 * If we are a client, cert_chain includes the peer's own certificate; if
1337 * we are a server, it does not.
1344 * Now in theory, since the calling process own 't' it should be safe to
1345 * modify. We need to be able to read f without being hassled
1347 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1350 /* Do we need to to SSL locking? */
1351 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1356 * what if we are setup for one protocol version but want to talk another
1358 if (t
->method
!= f
->method
) {
1359 t
->method
->ssl_free(t
);
1360 t
->method
= f
->method
;
1361 if (t
->method
->ssl_new(t
) == 0)
1365 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1366 ssl_cert_free(t
->cert
);
1368 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1375 /* Fix this so it checks all the valid key/cert options */
1376 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1378 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1379 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1382 if (ctx
->cert
->key
->privatekey
== NULL
) {
1383 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1386 return (X509_check_private_key
1387 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1390 /* Fix this function so that it takes an optional type parameter */
1391 int SSL_check_private_key(const SSL
*ssl
)
1394 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1397 if (ssl
->cert
->key
->x509
== NULL
) {
1398 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1401 if (ssl
->cert
->key
->privatekey
== NULL
) {
1402 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1405 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1406 ssl
->cert
->key
->privatekey
));
1409 int SSL_waiting_for_async(SSL
*s
)
1417 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1419 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1423 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1426 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1427 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1429 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1433 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1437 int SSL_accept(SSL
*s
)
1439 if (s
->handshake_func
== NULL
) {
1440 /* Not properly initialized yet */
1441 SSL_set_accept_state(s
);
1444 return SSL_do_handshake(s
);
1447 int SSL_connect(SSL
*s
)
1449 if (s
->handshake_func
== NULL
) {
1450 /* Not properly initialized yet */
1451 SSL_set_connect_state(s
);
1454 return SSL_do_handshake(s
);
1457 long SSL_get_default_timeout(const SSL
*s
)
1459 return (s
->method
->get_timeout());
1462 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1463 int (*func
) (void *))
1466 if (s
->waitctx
== NULL
) {
1467 s
->waitctx
= ASYNC_WAIT_CTX_new();
1468 if (s
->waitctx
== NULL
)
1471 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1472 sizeof(struct ssl_async_args
))) {
1474 s
->rwstate
= SSL_NOTHING
;
1475 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1478 s
->rwstate
= SSL_ASYNC_PAUSED
;
1481 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1487 s
->rwstate
= SSL_NOTHING
;
1488 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1489 /* Shouldn't happen */
1494 static int ssl_io_intern(void *vargs
)
1496 struct ssl_async_args
*args
;
1501 args
= (struct ssl_async_args
*)vargs
;
1505 switch (args
->type
) {
1507 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1509 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1511 return args
->f
.func_other(s
);
1516 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1518 if (s
->handshake_func
== NULL
) {
1519 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1523 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1524 s
->rwstate
= SSL_NOTHING
;
1528 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1529 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1530 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1534 * If we are a client and haven't received the ServerHello etc then we
1537 ossl_statem_check_finish_init(s
, 0);
1539 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1540 struct ssl_async_args args
;
1546 args
.type
= READFUNC
;
1547 args
.f
.func_read
= s
->method
->ssl_read
;
1549 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1550 *readbytes
= s
->asyncrw
;
1553 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1557 int SSL_read(SSL
*s
, void *buf
, int num
)
1563 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1567 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1570 * The cast is safe here because ret should be <= INT_MAX because num is
1574 ret
= (int)readbytes
;
1579 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1581 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1588 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1593 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1594 return SSL_READ_EARLY_DATA_ERROR
;
1597 switch (s
->early_data_state
) {
1598 case SSL_EARLY_DATA_NONE
:
1599 if (!SSL_in_before(s
)) {
1600 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1601 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1602 return SSL_READ_EARLY_DATA_ERROR
;
1606 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1607 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1608 ret
= SSL_accept(s
);
1611 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1612 return SSL_READ_EARLY_DATA_ERROR
;
1616 case SSL_EARLY_DATA_READ_RETRY
:
1617 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1618 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1619 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1621 * State machine will update early_data_state to
1622 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1625 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1626 != SSL_EARLY_DATA_FINISHED_READING
)) {
1627 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1628 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1629 : SSL_READ_EARLY_DATA_ERROR
;
1632 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1635 return SSL_READ_EARLY_DATA_FINISH
;
1638 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1639 return SSL_READ_EARLY_DATA_ERROR
;
1643 int SSL_get_early_data_status(const SSL
*s
)
1645 return s
->ext
.early_data
;
1648 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1650 if (s
->handshake_func
== NULL
) {
1651 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1655 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1658 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1659 struct ssl_async_args args
;
1665 args
.type
= READFUNC
;
1666 args
.f
.func_read
= s
->method
->ssl_peek
;
1668 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1669 *readbytes
= s
->asyncrw
;
1672 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1676 int SSL_peek(SSL
*s
, void *buf
, int num
)
1682 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1686 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1689 * The cast is safe here because ret should be <= INT_MAX because num is
1693 ret
= (int)readbytes
;
1699 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1701 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1708 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1710 if (s
->handshake_func
== NULL
) {
1711 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1715 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1716 s
->rwstate
= SSL_NOTHING
;
1717 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1721 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1722 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1723 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1724 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1727 /* If we are a client and haven't sent the Finished we better do that */
1728 ossl_statem_check_finish_init(s
, 1);
1730 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1732 struct ssl_async_args args
;
1735 args
.buf
= (void *)buf
;
1737 args
.type
= WRITEFUNC
;
1738 args
.f
.func_write
= s
->method
->ssl_write
;
1740 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1741 *written
= s
->asyncrw
;
1744 return s
->method
->ssl_write(s
, buf
, num
, written
);
1748 int SSL_write(SSL
*s
, const void *buf
, int num
)
1754 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1758 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1761 * The cast is safe here because ret should be <= INT_MAX because num is
1770 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1772 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1779 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1781 int ret
, early_data_state
;
1783 switch (s
->early_data_state
) {
1784 case SSL_EARLY_DATA_NONE
:
1786 || !SSL_in_before(s
)
1787 || s
->session
== NULL
1788 || s
->session
->ext
.max_early_data
== 0) {
1789 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1790 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1795 case SSL_EARLY_DATA_CONNECT_RETRY
:
1796 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1797 ret
= SSL_connect(s
);
1800 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1805 case SSL_EARLY_DATA_WRITE_RETRY
:
1806 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1807 ret
= SSL_write_ex(s
, buf
, num
, written
);
1808 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1811 case SSL_EARLY_DATA_FINISHED_READING
:
1812 case SSL_EARLY_DATA_READ_RETRY
:
1813 early_data_state
= s
->early_data_state
;
1814 /* We are a server writing to an unauthenticated client */
1815 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1816 ret
= SSL_write_ex(s
, buf
, num
, written
);
1817 s
->early_data_state
= early_data_state
;
1821 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1826 int SSL_shutdown(SSL
*s
)
1829 * Note that this function behaves differently from what one might
1830 * expect. Return values are 0 for no success (yet), 1 for success; but
1831 * calling it once is usually not enough, even if blocking I/O is used
1832 * (see ssl3_shutdown).
1835 if (s
->handshake_func
== NULL
) {
1836 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1840 if (!SSL_in_init(s
)) {
1841 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1842 struct ssl_async_args args
;
1845 args
.type
= OTHERFUNC
;
1846 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1848 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1850 return s
->method
->ssl_shutdown(s
);
1853 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1858 int SSL_key_update(SSL
*s
, int updatetype
)
1861 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1862 * negotiated, and that it is appropriate to call SSL_key_update() instead
1863 * of SSL_renegotiate().
1865 if (!SSL_IS_TLS13(s
)) {
1866 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
1870 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
1871 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
1872 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
1876 if (!SSL_is_init_finished(s
)) {
1877 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
1881 ossl_statem_set_in_init(s
, 1);
1882 s
->key_update
= updatetype
;
1886 int SSL_get_key_update_type(SSL
*s
)
1888 return s
->key_update
;
1891 int SSL_renegotiate(SSL
*s
)
1893 if (SSL_IS_TLS13(s
)) {
1894 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
1898 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
1899 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
1906 return (s
->method
->ssl_renegotiate(s
));
1909 int SSL_renegotiate_abbreviated(SSL
*s
)
1911 if (SSL_IS_TLS13(s
)) {
1912 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
1916 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
1917 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
1924 return (s
->method
->ssl_renegotiate(s
));
1927 int SSL_renegotiate_pending(SSL
*s
)
1930 * becomes true when negotiation is requested; false again once a
1931 * handshake has finished
1933 return (s
->renegotiate
!= 0);
1936 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
1941 case SSL_CTRL_GET_READ_AHEAD
:
1942 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
1943 case SSL_CTRL_SET_READ_AHEAD
:
1944 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1945 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
1948 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1949 s
->msg_callback_arg
= parg
;
1953 return (s
->mode
|= larg
);
1954 case SSL_CTRL_CLEAR_MODE
:
1955 return (s
->mode
&= ~larg
);
1956 case SSL_CTRL_GET_MAX_CERT_LIST
:
1957 return (long)(s
->max_cert_list
);
1958 case SSL_CTRL_SET_MAX_CERT_LIST
:
1961 l
= (long)s
->max_cert_list
;
1962 s
->max_cert_list
= (size_t)larg
;
1964 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1965 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1967 s
->max_send_fragment
= larg
;
1968 if (s
->max_send_fragment
< s
->split_send_fragment
)
1969 s
->split_send_fragment
= s
->max_send_fragment
;
1971 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
1972 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
1974 s
->split_send_fragment
= larg
;
1976 case SSL_CTRL_SET_MAX_PIPELINES
:
1977 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
1979 s
->max_pipelines
= larg
;
1981 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
1983 case SSL_CTRL_GET_RI_SUPPORT
:
1985 return s
->s3
->send_connection_binding
;
1988 case SSL_CTRL_CERT_FLAGS
:
1989 return (s
->cert
->cert_flags
|= larg
);
1990 case SSL_CTRL_CLEAR_CERT_FLAGS
:
1991 return (s
->cert
->cert_flags
&= ~larg
);
1993 case SSL_CTRL_GET_RAW_CIPHERLIST
:
1995 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
1997 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
1998 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2000 return TLS_CIPHER_LEN
;
2002 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2003 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2005 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2009 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2010 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2011 &s
->min_proto_version
);
2012 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2013 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2014 &s
->max_proto_version
);
2016 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2020 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2023 case SSL_CTRL_SET_MSG_CALLBACK
:
2024 s
->msg_callback
= (void (*)
2025 (int write_p
, int version
, int content_type
,
2026 const void *buf
, size_t len
, SSL
*ssl
,
2031 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2035 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2037 return ctx
->sessions
;
2040 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2043 /* For some cases with ctx == NULL perform syntax checks */
2046 #ifndef OPENSSL_NO_EC
2047 case SSL_CTRL_SET_GROUPS_LIST
:
2048 return tls1_set_groups_list(NULL
, NULL
, parg
);
2050 case SSL_CTRL_SET_SIGALGS_LIST
:
2051 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2052 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2059 case SSL_CTRL_GET_READ_AHEAD
:
2060 return (ctx
->read_ahead
);
2061 case SSL_CTRL_SET_READ_AHEAD
:
2062 l
= ctx
->read_ahead
;
2063 ctx
->read_ahead
= larg
;
2066 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2067 ctx
->msg_callback_arg
= parg
;
2070 case SSL_CTRL_GET_MAX_CERT_LIST
:
2071 return (long)(ctx
->max_cert_list
);
2072 case SSL_CTRL_SET_MAX_CERT_LIST
:
2075 l
= (long)ctx
->max_cert_list
;
2076 ctx
->max_cert_list
= (size_t)larg
;
2079 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2082 l
= (long)ctx
->session_cache_size
;
2083 ctx
->session_cache_size
= (size_t)larg
;
2085 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2086 return (long)(ctx
->session_cache_size
);
2087 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2088 l
= ctx
->session_cache_mode
;
2089 ctx
->session_cache_mode
= larg
;
2091 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2092 return (ctx
->session_cache_mode
);
2094 case SSL_CTRL_SESS_NUMBER
:
2095 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2096 case SSL_CTRL_SESS_CONNECT
:
2097 return (ctx
->stats
.sess_connect
);
2098 case SSL_CTRL_SESS_CONNECT_GOOD
:
2099 return (ctx
->stats
.sess_connect_good
);
2100 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2101 return (ctx
->stats
.sess_connect_renegotiate
);
2102 case SSL_CTRL_SESS_ACCEPT
:
2103 return (ctx
->stats
.sess_accept
);
2104 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2105 return (ctx
->stats
.sess_accept_good
);
2106 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2107 return (ctx
->stats
.sess_accept_renegotiate
);
2108 case SSL_CTRL_SESS_HIT
:
2109 return (ctx
->stats
.sess_hit
);
2110 case SSL_CTRL_SESS_CB_HIT
:
2111 return (ctx
->stats
.sess_cb_hit
);
2112 case SSL_CTRL_SESS_MISSES
:
2113 return (ctx
->stats
.sess_miss
);
2114 case SSL_CTRL_SESS_TIMEOUTS
:
2115 return (ctx
->stats
.sess_timeout
);
2116 case SSL_CTRL_SESS_CACHE_FULL
:
2117 return (ctx
->stats
.sess_cache_full
);
2119 return (ctx
->mode
|= larg
);
2120 case SSL_CTRL_CLEAR_MODE
:
2121 return (ctx
->mode
&= ~larg
);
2122 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2123 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2125 ctx
->max_send_fragment
= larg
;
2126 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2127 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2129 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2130 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2132 ctx
->split_send_fragment
= larg
;
2134 case SSL_CTRL_SET_MAX_PIPELINES
:
2135 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2137 ctx
->max_pipelines
= larg
;
2139 case SSL_CTRL_CERT_FLAGS
:
2140 return (ctx
->cert
->cert_flags
|= larg
);
2141 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2142 return (ctx
->cert
->cert_flags
&= ~larg
);
2143 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2144 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2145 &ctx
->min_proto_version
);
2146 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2147 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2148 &ctx
->max_proto_version
);
2150 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2154 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2157 case SSL_CTRL_SET_MSG_CALLBACK
:
2158 ctx
->msg_callback
= (void (*)
2159 (int write_p
, int version
, int content_type
,
2160 const void *buf
, size_t len
, SSL
*ssl
,
2165 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2169 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2178 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2179 const SSL_CIPHER
*const *bp
)
2181 if ((*ap
)->id
> (*bp
)->id
)
2183 if ((*ap
)->id
< (*bp
)->id
)
2188 /** return a STACK of the ciphers available for the SSL and in order of
2190 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2193 if (s
->cipher_list
!= NULL
) {
2194 return (s
->cipher_list
);
2195 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2196 return (s
->ctx
->cipher_list
);
2202 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2204 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2206 return s
->session
->ciphers
;
2209 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2211 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2213 ciphers
= SSL_get_ciphers(s
);
2216 ssl_set_client_disabled(s
);
2217 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2218 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2219 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2221 sk
= sk_SSL_CIPHER_new_null();
2224 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2225 sk_SSL_CIPHER_free(sk
);
2233 /** return a STACK of the ciphers available for the SSL and in order of
2235 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2238 if (s
->cipher_list_by_id
!= NULL
) {
2239 return (s
->cipher_list_by_id
);
2240 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2241 return (s
->ctx
->cipher_list_by_id
);
2247 /** The old interface to get the same thing as SSL_get_ciphers() */
2248 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2250 const SSL_CIPHER
*c
;
2251 STACK_OF(SSL_CIPHER
) *sk
;
2255 sk
= SSL_get_ciphers(s
);
2256 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2258 c
= sk_SSL_CIPHER_value(sk
, n
);
2264 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2266 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2269 return ctx
->cipher_list
;
2273 /** specify the ciphers to be used by default by the SSL_CTX */
2274 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2276 STACK_OF(SSL_CIPHER
) *sk
;
2278 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2279 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2281 * ssl_create_cipher_list may return an empty stack if it was unable to
2282 * find a cipher matching the given rule string (for example if the rule
2283 * string specifies a cipher which has been disabled). This is not an
2284 * error as far as ssl_create_cipher_list is concerned, and hence
2285 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2289 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2290 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2296 /** specify the ciphers to be used by the SSL */
2297 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2299 STACK_OF(SSL_CIPHER
) *sk
;
2301 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2302 &s
->cipher_list_by_id
, str
, s
->cert
);
2303 /* see comment in SSL_CTX_set_cipher_list */
2306 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2307 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2313 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2316 STACK_OF(SSL_CIPHER
) *sk
;
2317 const SSL_CIPHER
*c
;
2320 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2324 sk
= s
->session
->ciphers
;
2326 if (sk_SSL_CIPHER_num(sk
) == 0)
2329 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2332 c
= sk_SSL_CIPHER_value(sk
, i
);
2333 n
= strlen(c
->name
);
2340 memcpy(p
, c
->name
, n
+ 1);
2349 /** return a servername extension value if provided in Client Hello, or NULL.
2350 * So far, only host_name types are defined (RFC 3546).
2353 const char *SSL_get_servername(const SSL
*s
, const int type
)
2355 if (type
!= TLSEXT_NAMETYPE_host_name
)
2358 return s
->session
&& !s
->ext
.hostname
?
2359 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2362 int SSL_get_servername_type(const SSL
*s
)
2365 && (!s
->ext
.hostname
? s
->session
->
2366 ext
.hostname
: s
->ext
.hostname
))
2367 return TLSEXT_NAMETYPE_host_name
;
2372 * SSL_select_next_proto implements the standard protocol selection. It is
2373 * expected that this function is called from the callback set by
2374 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2375 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2376 * not included in the length. A byte string of length 0 is invalid. No byte
2377 * string may be truncated. The current, but experimental algorithm for
2378 * selecting the protocol is: 1) If the server doesn't support NPN then this
2379 * is indicated to the callback. In this case, the client application has to
2380 * abort the connection or have a default application level protocol. 2) If
2381 * the server supports NPN, but advertises an empty list then the client
2382 * selects the first protocol in its list, but indicates via the API that this
2383 * fallback case was enacted. 3) Otherwise, the client finds the first
2384 * protocol in the server's list that it supports and selects this protocol.
2385 * This is because it's assumed that the server has better information about
2386 * which protocol a client should use. 4) If the client doesn't support any
2387 * of the server's advertised protocols, then this is treated the same as
2388 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2389 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2391 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2392 const unsigned char *server
,
2393 unsigned int server_len
,
2394 const unsigned char *client
, unsigned int client_len
)
2397 const unsigned char *result
;
2398 int status
= OPENSSL_NPN_UNSUPPORTED
;
2401 * For each protocol in server preference order, see if we support it.
2403 for (i
= 0; i
< server_len
;) {
2404 for (j
= 0; j
< client_len
;) {
2405 if (server
[i
] == client
[j
] &&
2406 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2407 /* We found a match */
2408 result
= &server
[i
];
2409 status
= OPENSSL_NPN_NEGOTIATED
;
2419 /* There's no overlap between our protocols and the server's list. */
2421 status
= OPENSSL_NPN_NO_OVERLAP
;
2424 *out
= (unsigned char *)result
+ 1;
2425 *outlen
= result
[0];
2429 #ifndef OPENSSL_NO_NEXTPROTONEG
2431 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2432 * client's requested protocol for this connection and returns 0. If the
2433 * client didn't request any protocol, then *data is set to NULL. Note that
2434 * the client can request any protocol it chooses. The value returned from
2435 * this function need not be a member of the list of supported protocols
2436 * provided by the callback.
2438 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2445 *len
= (unsigned int)s
->ext
.npn_len
;
2450 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2451 * a TLS server needs a list of supported protocols for Next Protocol
2452 * Negotiation. The returned list must be in wire format. The list is
2453 * returned by setting |out| to point to it and |outlen| to its length. This
2454 * memory will not be modified, but one should assume that the SSL* keeps a
2455 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2456 * wishes to advertise. Otherwise, no such extension will be included in the
2459 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2460 SSL_CTX_npn_advertised_cb_func cb
,
2463 ctx
->ext
.npn_advertised_cb
= cb
;
2464 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2468 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2469 * client needs to select a protocol from the server's provided list. |out|
2470 * must be set to point to the selected protocol (which may be within |in|).
2471 * The length of the protocol name must be written into |outlen|. The
2472 * server's advertised protocols are provided in |in| and |inlen|. The
2473 * callback can assume that |in| is syntactically valid. The client must
2474 * select a protocol. It is fatal to the connection if this callback returns
2475 * a value other than SSL_TLSEXT_ERR_OK.
2477 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2478 SSL_CTX_npn_select_cb_func cb
,
2481 ctx
->ext
.npn_select_cb
= cb
;
2482 ctx
->ext
.npn_select_cb_arg
= arg
;
2487 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2488 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2489 * length-prefixed strings). Returns 0 on success.
2491 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2492 unsigned int protos_len
)
2494 OPENSSL_free(ctx
->ext
.alpn
);
2495 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2496 if (ctx
->ext
.alpn
== NULL
) {
2497 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2500 ctx
->ext
.alpn_len
= protos_len
;
2506 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2507 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2508 * length-prefixed strings). Returns 0 on success.
2510 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2511 unsigned int protos_len
)
2513 OPENSSL_free(ssl
->ext
.alpn
);
2514 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2515 if (ssl
->ext
.alpn
== NULL
) {
2516 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2519 ssl
->ext
.alpn_len
= protos_len
;
2525 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2526 * called during ClientHello processing in order to select an ALPN protocol
2527 * from the client's list of offered protocols.
2529 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2530 SSL_CTX_alpn_select_cb_func cb
,
2533 ctx
->ext
.alpn_select_cb
= cb
;
2534 ctx
->ext
.alpn_select_cb_arg
= arg
;
2538 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2539 * On return it sets |*data| to point to |*len| bytes of protocol name
2540 * (not including the leading length-prefix byte). If the server didn't
2541 * respond with a negotiated protocol then |*len| will be zero.
2543 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2548 *data
= ssl
->s3
->alpn_selected
;
2552 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2555 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2556 const char *label
, size_t llen
,
2557 const unsigned char *p
, size_t plen
,
2560 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2563 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2568 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2570 const unsigned char *session_id
= a
->session_id
;
2572 unsigned char tmp_storage
[4];
2574 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2575 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2576 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2577 session_id
= tmp_storage
;
2581 ((unsigned long)session_id
[0]) |
2582 ((unsigned long)session_id
[1] << 8L) |
2583 ((unsigned long)session_id
[2] << 16L) |
2584 ((unsigned long)session_id
[3] << 24L);
2589 * NB: If this function (or indeed the hash function which uses a sort of
2590 * coarser function than this one) is changed, ensure
2591 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2592 * being able to construct an SSL_SESSION that will collide with any existing
2593 * session with a matching session ID.
2595 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2597 if (a
->ssl_version
!= b
->ssl_version
)
2599 if (a
->session_id_length
!= b
->session_id_length
)
2601 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2605 * These wrapper functions should remain rather than redeclaring
2606 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2607 * variable. The reason is that the functions aren't static, they're exposed
2611 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2613 SSL_CTX
*ret
= NULL
;
2616 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2620 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2623 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2624 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2627 ret
= OPENSSL_zalloc(sizeof(*ret
));
2632 ret
->min_proto_version
= 0;
2633 ret
->max_proto_version
= 0;
2634 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2635 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2636 /* We take the system default. */
2637 ret
->session_timeout
= meth
->get_timeout();
2638 ret
->references
= 1;
2639 ret
->lock
= CRYPTO_THREAD_lock_new();
2640 if (ret
->lock
== NULL
) {
2641 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2645 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2646 ret
->verify_mode
= SSL_VERIFY_NONE
;
2647 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2650 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2651 if (ret
->sessions
== NULL
)
2653 ret
->cert_store
= X509_STORE_new();
2654 if (ret
->cert_store
== NULL
)
2656 #ifndef OPENSSL_NO_CT
2657 ret
->ctlog_store
= CTLOG_STORE_new();
2658 if (ret
->ctlog_store
== NULL
)
2661 if (!ssl_create_cipher_list(ret
->method
,
2662 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2663 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2664 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2665 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2669 ret
->param
= X509_VERIFY_PARAM_new();
2670 if (ret
->param
== NULL
)
2673 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2674 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2677 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2678 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2682 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2685 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2688 /* No compression for DTLS */
2689 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2690 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2692 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2693 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2695 /* Setup RFC5077 ticket keys */
2696 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2697 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2698 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2699 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2700 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2701 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2702 ret
->options
|= SSL_OP_NO_TICKET
;
2704 #ifndef OPENSSL_NO_SRP
2705 if (!SSL_CTX_SRP_CTX_init(ret
))
2708 #ifndef OPENSSL_NO_ENGINE
2709 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2710 # define eng_strx(x) #x
2711 # define eng_str(x) eng_strx(x)
2712 /* Use specific client engine automatically... ignore errors */
2715 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2718 ENGINE_load_builtin_engines();
2719 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2721 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2727 * Default is to connect to non-RI servers. When RI is more widely
2728 * deployed might change this.
2730 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2732 * Disable compression by default to prevent CRIME. Applications can
2733 * re-enable compression by configuring
2734 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2735 * or by using the SSL_CONF library.
2737 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2739 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2742 * Default max early data is a fully loaded single record. Could be split
2743 * across multiple records in practice
2745 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2749 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2755 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2759 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2762 REF_PRINT_COUNT("SSL_CTX", ctx
);
2763 REF_ASSERT_ISNT(i
< 2);
2764 return ((i
> 1) ? 1 : 0);
2767 void SSL_CTX_free(SSL_CTX
*a
)
2774 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2775 REF_PRINT_COUNT("SSL_CTX", a
);
2778 REF_ASSERT_ISNT(i
< 0);
2780 X509_VERIFY_PARAM_free(a
->param
);
2781 dane_ctx_final(&a
->dane
);
2784 * Free internal session cache. However: the remove_cb() may reference
2785 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2786 * after the sessions were flushed.
2787 * As the ex_data handling routines might also touch the session cache,
2788 * the most secure solution seems to be: empty (flush) the cache, then
2789 * free ex_data, then finally free the cache.
2790 * (See ticket [openssl.org #212].)
2792 if (a
->sessions
!= NULL
)
2793 SSL_CTX_flush_sessions(a
, 0);
2795 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2796 lh_SSL_SESSION_free(a
->sessions
);
2797 X509_STORE_free(a
->cert_store
);
2798 #ifndef OPENSSL_NO_CT
2799 CTLOG_STORE_free(a
->ctlog_store
);
2801 sk_SSL_CIPHER_free(a
->cipher_list
);
2802 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2803 ssl_cert_free(a
->cert
);
2804 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2805 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2806 a
->comp_methods
= NULL
;
2807 #ifndef OPENSSL_NO_SRTP
2808 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2810 #ifndef OPENSSL_NO_SRP
2811 SSL_CTX_SRP_CTX_free(a
);
2813 #ifndef OPENSSL_NO_ENGINE
2814 ENGINE_finish(a
->client_cert_engine
);
2817 #ifndef OPENSSL_NO_EC
2818 OPENSSL_free(a
->ext
.ecpointformats
);
2819 OPENSSL_free(a
->ext
.supportedgroups
);
2821 OPENSSL_free(a
->ext
.alpn
);
2823 CRYPTO_THREAD_lock_free(a
->lock
);
2828 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2830 ctx
->default_passwd_callback
= cb
;
2833 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2835 ctx
->default_passwd_callback_userdata
= u
;
2838 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2840 return ctx
->default_passwd_callback
;
2843 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2845 return ctx
->default_passwd_callback_userdata
;
2848 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2850 s
->default_passwd_callback
= cb
;
2853 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2855 s
->default_passwd_callback_userdata
= u
;
2858 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2860 return s
->default_passwd_callback
;
2863 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2865 return s
->default_passwd_callback_userdata
;
2868 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2869 int (*cb
) (X509_STORE_CTX
*, void *),
2872 ctx
->app_verify_callback
= cb
;
2873 ctx
->app_verify_arg
= arg
;
2876 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
2877 int (*cb
) (int, X509_STORE_CTX
*))
2879 ctx
->verify_mode
= mode
;
2880 ctx
->default_verify_callback
= cb
;
2883 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
2885 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
2888 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2890 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
2893 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2895 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
2898 void ssl_set_masks(SSL
*s
)
2901 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
2902 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
2903 unsigned long mask_k
, mask_a
;
2904 #ifndef OPENSSL_NO_EC
2905 int have_ecc_cert
, ecdsa_ok
;
2910 #ifndef OPENSSL_NO_DH
2911 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
2916 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2917 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2918 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
2919 #ifndef OPENSSL_NO_EC
2920 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
2926 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
2927 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
2930 #ifndef OPENSSL_NO_GOST
2931 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
2932 mask_k
|= SSL_kGOST
;
2933 mask_a
|= SSL_aGOST12
;
2935 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
2936 mask_k
|= SSL_kGOST
;
2937 mask_a
|= SSL_aGOST12
;
2939 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
2940 mask_k
|= SSL_kGOST
;
2941 mask_a
|= SSL_aGOST01
;
2951 if (rsa_enc
|| rsa_sign
) {
2959 mask_a
|= SSL_aNULL
;
2962 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2963 * depending on the key usage extension.
2965 #ifndef OPENSSL_NO_EC
2966 if (have_ecc_cert
) {
2968 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
2969 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
2970 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
2973 mask_a
|= SSL_aECDSA
;
2975 /* Allow Ed25519 for TLS 1.2 if peer supports it */
2976 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
2977 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
2978 && TLS1_get_version(s
) == TLS1_2_VERSION
)
2979 mask_a
|= SSL_aECDSA
;
2982 #ifndef OPENSSL_NO_EC
2983 mask_k
|= SSL_kECDHE
;
2986 #ifndef OPENSSL_NO_PSK
2989 if (mask_k
& SSL_kRSA
)
2990 mask_k
|= SSL_kRSAPSK
;
2991 if (mask_k
& SSL_kDHE
)
2992 mask_k
|= SSL_kDHEPSK
;
2993 if (mask_k
& SSL_kECDHE
)
2994 mask_k
|= SSL_kECDHEPSK
;
2997 s
->s3
->tmp
.mask_k
= mask_k
;
2998 s
->s3
->tmp
.mask_a
= mask_a
;
3001 #ifndef OPENSSL_NO_EC
3003 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3005 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3006 /* key usage, if present, must allow signing */
3007 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3008 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3009 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3013 return 1; /* all checks are ok */
3018 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3019 size_t *serverinfo_length
)
3021 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3022 *serverinfo_length
= 0;
3024 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3027 *serverinfo
= cpk
->serverinfo
;
3028 *serverinfo_length
= cpk
->serverinfo_length
;
3032 void ssl_update_cache(SSL
*s
, int mode
)
3037 * If the session_id_length is 0, we are not supposed to cache it, and it
3038 * would be rather hard to do anyway :-)
3040 if (s
->session
->session_id_length
== 0)
3043 i
= s
->session_ctx
->session_cache_mode
;
3044 if ((i
& mode
) && (!s
->hit
)
3045 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
)
3046 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3047 && (s
->session_ctx
->new_session_cb
!= NULL
)) {
3048 SSL_SESSION_up_ref(s
->session
);
3049 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3050 SSL_SESSION_free(s
->session
);
3053 /* auto flush every 255 connections */
3054 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3055 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3056 ? s
->session_ctx
->stats
.sess_connect_good
3057 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3058 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3063 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3068 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3073 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3077 if (s
->method
!= meth
) {
3078 const SSL_METHOD
*sm
= s
->method
;
3079 int (*hf
) (SSL
*) = s
->handshake_func
;
3081 if (sm
->version
== meth
->version
)
3086 ret
= s
->method
->ssl_new(s
);
3089 if (hf
== sm
->ssl_connect
)
3090 s
->handshake_func
= meth
->ssl_connect
;
3091 else if (hf
== sm
->ssl_accept
)
3092 s
->handshake_func
= meth
->ssl_accept
;
3097 int SSL_get_error(const SSL
*s
, int i
)
3104 return (SSL_ERROR_NONE
);
3107 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3108 * where we do encode the error
3110 if ((l
= ERR_peek_error()) != 0) {
3111 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3112 return (SSL_ERROR_SYSCALL
);
3114 return (SSL_ERROR_SSL
);
3117 if (SSL_want_read(s
)) {
3118 bio
= SSL_get_rbio(s
);
3119 if (BIO_should_read(bio
))
3120 return (SSL_ERROR_WANT_READ
);
3121 else if (BIO_should_write(bio
))
3123 * This one doesn't make too much sense ... We never try to write
3124 * to the rbio, and an application program where rbio and wbio
3125 * are separate couldn't even know what it should wait for.
3126 * However if we ever set s->rwstate incorrectly (so that we have
3127 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3128 * wbio *are* the same, this test works around that bug; so it
3129 * might be safer to keep it.
3131 return (SSL_ERROR_WANT_WRITE
);
3132 else if (BIO_should_io_special(bio
)) {
3133 reason
= BIO_get_retry_reason(bio
);
3134 if (reason
== BIO_RR_CONNECT
)
3135 return (SSL_ERROR_WANT_CONNECT
);
3136 else if (reason
== BIO_RR_ACCEPT
)
3137 return (SSL_ERROR_WANT_ACCEPT
);
3139 return (SSL_ERROR_SYSCALL
); /* unknown */
3143 if (SSL_want_write(s
)) {
3144 /* Access wbio directly - in order to use the buffered bio if present */
3146 if (BIO_should_write(bio
))
3147 return (SSL_ERROR_WANT_WRITE
);
3148 else if (BIO_should_read(bio
))
3150 * See above (SSL_want_read(s) with BIO_should_write(bio))
3152 return (SSL_ERROR_WANT_READ
);
3153 else if (BIO_should_io_special(bio
)) {
3154 reason
= BIO_get_retry_reason(bio
);
3155 if (reason
== BIO_RR_CONNECT
)
3156 return (SSL_ERROR_WANT_CONNECT
);
3157 else if (reason
== BIO_RR_ACCEPT
)
3158 return (SSL_ERROR_WANT_ACCEPT
);
3160 return (SSL_ERROR_SYSCALL
);
3163 if (SSL_want_x509_lookup(s
))
3164 return (SSL_ERROR_WANT_X509_LOOKUP
);
3165 if (SSL_want_async(s
))
3166 return SSL_ERROR_WANT_ASYNC
;
3167 if (SSL_want_async_job(s
))
3168 return SSL_ERROR_WANT_ASYNC_JOB
;
3169 if (SSL_want_early(s
))
3170 return SSL_ERROR_WANT_EARLY
;
3172 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3173 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3174 return (SSL_ERROR_ZERO_RETURN
);
3176 return (SSL_ERROR_SYSCALL
);
3179 static int ssl_do_handshake_intern(void *vargs
)
3181 struct ssl_async_args
*args
;
3184 args
= (struct ssl_async_args
*)vargs
;
3187 return s
->handshake_func(s
);
3190 int SSL_do_handshake(SSL
*s
)
3194 if (s
->handshake_func
== NULL
) {
3195 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3199 ossl_statem_check_finish_init(s
, -1);
3201 s
->method
->ssl_renegotiate_check(s
, 0);
3203 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3204 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3205 struct ssl_async_args args
;
3209 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3211 ret
= s
->handshake_func(s
);
3217 void SSL_set_accept_state(SSL
*s
)
3221 ossl_statem_clear(s
);
3222 s
->handshake_func
= s
->method
->ssl_accept
;
3226 void SSL_set_connect_state(SSL
*s
)
3230 ossl_statem_clear(s
);
3231 s
->handshake_func
= s
->method
->ssl_connect
;
3235 int ssl_undefined_function(SSL
*s
)
3237 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3241 int ssl_undefined_void_function(void)
3243 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3244 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3248 int ssl_undefined_const_function(const SSL
*s
)
3253 const SSL_METHOD
*ssl_bad_method(int ver
)
3255 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3259 const char *ssl_protocol_to_string(int version
)
3263 case TLS1_3_VERSION
:
3266 case TLS1_2_VERSION
:
3269 case TLS1_1_VERSION
:
3284 case DTLS1_2_VERSION
:
3292 const char *SSL_get_version(const SSL
*s
)
3294 return ssl_protocol_to_string(s
->version
);
3297 SSL
*SSL_dup(SSL
*s
)
3299 STACK_OF(X509_NAME
) *sk
;
3304 /* If we're not quiescent, just up_ref! */
3305 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3306 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3311 * Otherwise, copy configuration state, and session if set.
3313 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3316 if (s
->session
!= NULL
) {
3318 * Arranges to share the same session via up_ref. This "copies"
3319 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3321 if (!SSL_copy_session_id(ret
, s
))
3325 * No session has been established yet, so we have to expect that
3326 * s->cert or ret->cert will be changed later -- they should not both
3327 * point to the same object, and thus we can't use
3328 * SSL_copy_session_id.
3330 if (!SSL_set_ssl_method(ret
, s
->method
))
3333 if (s
->cert
!= NULL
) {
3334 ssl_cert_free(ret
->cert
);
3335 ret
->cert
= ssl_cert_dup(s
->cert
);
3336 if (ret
->cert
== NULL
)
3340 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3341 (int)s
->sid_ctx_length
))
3345 if (!ssl_dane_dup(ret
, s
))
3347 ret
->version
= s
->version
;
3348 ret
->options
= s
->options
;
3349 ret
->mode
= s
->mode
;
3350 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3351 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3352 ret
->msg_callback
= s
->msg_callback
;
3353 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3354 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3355 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3356 ret
->generate_session_id
= s
->generate_session_id
;
3358 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3360 /* copy app data, a little dangerous perhaps */
3361 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3364 /* setup rbio, and wbio */
3365 if (s
->rbio
!= NULL
) {
3366 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3369 if (s
->wbio
!= NULL
) {
3370 if (s
->wbio
!= s
->rbio
) {
3371 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3374 BIO_up_ref(ret
->rbio
);
3375 ret
->wbio
= ret
->rbio
;
3379 ret
->server
= s
->server
;
3380 if (s
->handshake_func
) {
3382 SSL_set_accept_state(ret
);
3384 SSL_set_connect_state(ret
);
3386 ret
->shutdown
= s
->shutdown
;
3389 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3390 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3392 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3394 /* dup the cipher_list and cipher_list_by_id stacks */
3395 if (s
->cipher_list
!= NULL
) {
3396 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3399 if (s
->cipher_list_by_id
!= NULL
)
3400 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3404 /* Dup the client_CA list */
3405 if (s
->ca_names
!= NULL
) {
3406 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3409 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3410 xn
= sk_X509_NAME_value(sk
, i
);
3411 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3424 void ssl_clear_cipher_ctx(SSL
*s
)
3426 if (s
->enc_read_ctx
!= NULL
) {
3427 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3428 s
->enc_read_ctx
= NULL
;
3430 if (s
->enc_write_ctx
!= NULL
) {
3431 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3432 s
->enc_write_ctx
= NULL
;
3434 #ifndef OPENSSL_NO_COMP
3435 COMP_CTX_free(s
->expand
);
3437 COMP_CTX_free(s
->compress
);
3442 X509
*SSL_get_certificate(const SSL
*s
)
3444 if (s
->cert
!= NULL
)
3445 return (s
->cert
->key
->x509
);
3450 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3452 if (s
->cert
!= NULL
)
3453 return (s
->cert
->key
->privatekey
);
3458 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3460 if (ctx
->cert
!= NULL
)
3461 return ctx
->cert
->key
->x509
;
3466 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3468 if (ctx
->cert
!= NULL
)
3469 return ctx
->cert
->key
->privatekey
;
3474 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3476 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3477 return (s
->session
->cipher
);
3481 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3483 #ifndef OPENSSL_NO_COMP
3484 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3490 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3492 #ifndef OPENSSL_NO_COMP
3493 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3499 int ssl_init_wbio_buffer(SSL
*s
)
3503 if (s
->bbio
!= NULL
) {
3504 /* Already buffered. */
3508 bbio
= BIO_new(BIO_f_buffer());
3509 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3511 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3515 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3520 int ssl_free_wbio_buffer(SSL
*s
)
3522 /* callers ensure s is never null */
3523 if (s
->bbio
== NULL
)
3526 s
->wbio
= BIO_pop(s
->wbio
);
3527 if (!ossl_assert(s
->wbio
!= NULL
))
3535 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3537 ctx
->quiet_shutdown
= mode
;
3540 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3542 return (ctx
->quiet_shutdown
);
3545 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3547 s
->quiet_shutdown
= mode
;
3550 int SSL_get_quiet_shutdown(const SSL
*s
)
3552 return (s
->quiet_shutdown
);
3555 void SSL_set_shutdown(SSL
*s
, int mode
)
3560 int SSL_get_shutdown(const SSL
*s
)
3565 int SSL_version(const SSL
*s
)
3570 int SSL_client_version(const SSL
*s
)
3572 return s
->client_version
;
3575 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3580 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3583 if (ssl
->ctx
== ctx
)
3586 ctx
= ssl
->session_ctx
;
3587 new_cert
= ssl_cert_dup(ctx
->cert
);
3588 if (new_cert
== NULL
) {
3592 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3593 ssl_cert_free(new_cert
);
3597 ssl_cert_free(ssl
->cert
);
3598 ssl
->cert
= new_cert
;
3601 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3602 * so setter APIs must prevent invalid lengths from entering the system.
3604 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3608 * If the session ID context matches that of the parent SSL_CTX,
3609 * inherit it from the new SSL_CTX as well. If however the context does
3610 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3611 * leave it unchanged.
3613 if ((ssl
->ctx
!= NULL
) &&
3614 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3615 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3616 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3617 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3620 SSL_CTX_up_ref(ctx
);
3621 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3627 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3629 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3632 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3634 X509_LOOKUP
*lookup
;
3636 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3639 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3641 /* Clear any errors if the default directory does not exist */
3647 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3649 X509_LOOKUP
*lookup
;
3651 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3655 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3657 /* Clear any errors if the default file does not exist */
3663 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3666 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3669 void SSL_set_info_callback(SSL
*ssl
,
3670 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3672 ssl
->info_callback
= cb
;
3676 * One compiler (Diab DCC) doesn't like argument names in returned function
3679 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3682 return ssl
->info_callback
;
3685 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3687 ssl
->verify_result
= arg
;
3690 long SSL_get_verify_result(const SSL
*ssl
)
3692 return (ssl
->verify_result
);
3695 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3698 return sizeof(ssl
->s3
->client_random
);
3699 if (outlen
> sizeof(ssl
->s3
->client_random
))
3700 outlen
= sizeof(ssl
->s3
->client_random
);
3701 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3705 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3708 return sizeof(ssl
->s3
->server_random
);
3709 if (outlen
> sizeof(ssl
->s3
->server_random
))
3710 outlen
= sizeof(ssl
->s3
->server_random
);
3711 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3715 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3716 unsigned char *out
, size_t outlen
)
3719 return session
->master_key_length
;
3720 if (outlen
> session
->master_key_length
)
3721 outlen
= session
->master_key_length
;
3722 memcpy(out
, session
->master_key
, outlen
);
3726 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3728 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3731 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3733 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3736 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3738 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3741 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3743 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3746 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3748 return (ctx
->cert_store
);
3751 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3753 X509_STORE_free(ctx
->cert_store
);
3754 ctx
->cert_store
= store
;
3757 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3760 X509_STORE_up_ref(store
);
3761 SSL_CTX_set_cert_store(ctx
, store
);
3764 int SSL_want(const SSL
*s
)
3766 return (s
->rwstate
);
3770 * \brief Set the callback for generating temporary DH keys.
3771 * \param ctx the SSL context.
3772 * \param dh the callback
3775 #ifndef OPENSSL_NO_DH
3776 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3777 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3780 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3783 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3786 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3790 #ifndef OPENSSL_NO_PSK
3791 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3793 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3794 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3797 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3798 if (identity_hint
!= NULL
) {
3799 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3800 if (ctx
->cert
->psk_identity_hint
== NULL
)
3803 ctx
->cert
->psk_identity_hint
= NULL
;
3807 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3812 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3813 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3816 OPENSSL_free(s
->cert
->psk_identity_hint
);
3817 if (identity_hint
!= NULL
) {
3818 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3819 if (s
->cert
->psk_identity_hint
== NULL
)
3822 s
->cert
->psk_identity_hint
= NULL
;
3826 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3828 if (s
== NULL
|| s
->session
== NULL
)
3830 return (s
->session
->psk_identity_hint
);
3833 const char *SSL_get_psk_identity(const SSL
*s
)
3835 if (s
== NULL
|| s
->session
== NULL
)
3837 return (s
->session
->psk_identity
);
3840 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
3842 s
->psk_client_callback
= cb
;
3845 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
3847 ctx
->psk_client_callback
= cb
;
3850 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
3852 s
->psk_server_callback
= cb
;
3855 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
3857 ctx
->psk_server_callback
= cb
;
3861 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
3862 void (*cb
) (int write_p
, int version
,
3863 int content_type
, const void *buf
,
3864 size_t len
, SSL
*ssl
, void *arg
))
3866 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3869 void SSL_set_msg_callback(SSL
*ssl
,
3870 void (*cb
) (int write_p
, int version
,
3871 int content_type
, const void *buf
,
3872 size_t len
, SSL
*ssl
, void *arg
))
3874 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3877 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
3878 int (*cb
) (SSL
*ssl
,
3882 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3883 (void (*)(void))cb
);
3886 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
3887 int (*cb
) (SSL
*ssl
,
3888 int is_forward_secure
))
3890 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3891 (void (*)(void))cb
);
3894 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
3895 size_t (*cb
) (SSL
*ssl
, int type
,
3896 size_t len
, void *arg
))
3898 ctx
->record_padding_cb
= cb
;
3901 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
3903 ctx
->record_padding_arg
= arg
;
3906 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
3908 return ctx
->record_padding_arg
;
3911 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
3913 /* block size of 0 or 1 is basically no padding */
3914 if (block_size
== 1)
3915 ctx
->block_padding
= 0;
3916 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
3917 ctx
->block_padding
= block_size
;
3923 void SSL_set_record_padding_callback(SSL
*ssl
,
3924 size_t (*cb
) (SSL
*ssl
, int type
,
3925 size_t len
, void *arg
))
3927 ssl
->record_padding_cb
= cb
;
3930 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
3932 ssl
->record_padding_arg
= arg
;
3935 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
3937 return ssl
->record_padding_arg
;
3940 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
3942 /* block size of 0 or 1 is basically no padding */
3943 if (block_size
== 1)
3944 ssl
->block_padding
= 0;
3945 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
3946 ssl
->block_padding
= block_size
;
3953 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3954 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3955 * If EVP_MD pointer is passed, initializes ctx with this |md|.
3956 * Returns the newly allocated ctx;
3959 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
3961 ssl_clear_hash_ctx(hash
);
3962 *hash
= EVP_MD_CTX_new();
3963 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
3964 EVP_MD_CTX_free(*hash
);
3971 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
3974 EVP_MD_CTX_free(*hash
);
3978 /* Retrieve handshake hashes */
3979 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
3982 EVP_MD_CTX
*ctx
= NULL
;
3983 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
3984 int hashleni
= EVP_MD_CTX_size(hdgst
);
3987 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
3990 ctx
= EVP_MD_CTX_new();
3994 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
3995 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
3998 *hashlen
= hashleni
;
4002 EVP_MD_CTX_free(ctx
);
4006 int SSL_session_reused(SSL
*s
)
4011 int SSL_is_server(const SSL
*s
)
4016 #if OPENSSL_API_COMPAT < 0x10100000L
4017 void SSL_set_debug(SSL
*s
, int debug
)
4019 /* Old function was do-nothing anyway... */
4025 void SSL_set_security_level(SSL
*s
, int level
)
4027 s
->cert
->sec_level
= level
;
4030 int SSL_get_security_level(const SSL
*s
)
4032 return s
->cert
->sec_level
;
4035 void SSL_set_security_callback(SSL
*s
,
4036 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4037 int op
, int bits
, int nid
,
4038 void *other
, void *ex
))
4040 s
->cert
->sec_cb
= cb
;
4043 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4044 const SSL_CTX
*ctx
, int op
,
4045 int bits
, int nid
, void *other
,
4047 return s
->cert
->sec_cb
;
4050 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4052 s
->cert
->sec_ex
= ex
;
4055 void *SSL_get0_security_ex_data(const SSL
*s
)
4057 return s
->cert
->sec_ex
;
4060 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4062 ctx
->cert
->sec_level
= level
;
4065 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4067 return ctx
->cert
->sec_level
;
4070 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4071 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4072 int op
, int bits
, int nid
,
4073 void *other
, void *ex
))
4075 ctx
->cert
->sec_cb
= cb
;
4078 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4084 return ctx
->cert
->sec_cb
;
4087 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4089 ctx
->cert
->sec_ex
= ex
;
4092 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4094 return ctx
->cert
->sec_ex
;
4098 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4099 * can return unsigned long, instead of the generic long return value from the
4100 * control interface.
4102 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4104 return ctx
->options
;
4107 unsigned long SSL_get_options(const SSL
*s
)
4112 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4114 return ctx
->options
|= op
;
4117 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4119 return s
->options
|= op
;
4122 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4124 return ctx
->options
&= ~op
;
4127 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4129 return s
->options
&= ~op
;
4132 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4134 return s
->verified_chain
;
4137 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4139 #ifndef OPENSSL_NO_CT
4142 * Moves SCTs from the |src| stack to the |dst| stack.
4143 * The source of each SCT will be set to |origin|.
4144 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4146 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4148 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4149 sct_source_t origin
)
4155 *dst
= sk_SCT_new_null();
4157 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4162 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4163 if (SCT_set_source(sct
, origin
) != 1)
4166 if (sk_SCT_push(*dst
, sct
) <= 0)
4174 sk_SCT_push(src
, sct
); /* Put the SCT back */
4179 * Look for data collected during ServerHello and parse if found.
4180 * Returns the number of SCTs extracted.
4182 static int ct_extract_tls_extension_scts(SSL
*s
)
4184 int scts_extracted
= 0;
4186 if (s
->ext
.scts
!= NULL
) {
4187 const unsigned char *p
= s
->ext
.scts
;
4188 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4190 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4192 SCT_LIST_free(scts
);
4195 return scts_extracted
;
4199 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4200 * contains an SCT X509 extension. They will be stored in |s->scts|.
4202 * - The number of SCTs extracted, assuming an OCSP response exists.
4203 * - 0 if no OCSP response exists or it contains no SCTs.
4204 * - A negative integer if an error occurs.
4206 static int ct_extract_ocsp_response_scts(SSL
*s
)
4208 # ifndef OPENSSL_NO_OCSP
4209 int scts_extracted
= 0;
4210 const unsigned char *p
;
4211 OCSP_BASICRESP
*br
= NULL
;
4212 OCSP_RESPONSE
*rsp
= NULL
;
4213 STACK_OF(SCT
) *scts
= NULL
;
4216 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4219 p
= s
->ext
.ocsp
.resp
;
4220 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4224 br
= OCSP_response_get1_basic(rsp
);
4228 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4229 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4235 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4237 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4238 if (scts_extracted
< 0)
4242 SCT_LIST_free(scts
);
4243 OCSP_BASICRESP_free(br
);
4244 OCSP_RESPONSE_free(rsp
);
4245 return scts_extracted
;
4247 /* Behave as if no OCSP response exists */
4253 * Attempts to extract SCTs from the peer certificate.
4254 * Return the number of SCTs extracted, or a negative integer if an error
4257 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4259 int scts_extracted
= 0;
4260 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4263 STACK_OF(SCT
) *scts
=
4264 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4267 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4269 SCT_LIST_free(scts
);
4272 return scts_extracted
;
4276 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4277 * response (if it exists) and X509v3 extensions in the certificate.
4278 * Returns NULL if an error occurs.
4280 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4282 if (!s
->scts_parsed
) {
4283 if (ct_extract_tls_extension_scts(s
) < 0 ||
4284 ct_extract_ocsp_response_scts(s
) < 0 ||
4285 ct_extract_x509v3_extension_scts(s
) < 0)
4295 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4296 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4301 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4302 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4304 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4307 for (i
= 0; i
< count
; ++i
) {
4308 SCT
*sct
= sk_SCT_value(scts
, i
);
4309 int status
= SCT_get_validation_status(sct
);
4311 if (status
== SCT_VALIDATION_STATUS_VALID
)
4314 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4318 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4322 * Since code exists that uses the custom extension handler for CT, look
4323 * for this and throw an error if they have already registered to use CT.
4325 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4326 TLSEXT_TYPE_signed_certificate_timestamp
))
4328 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4329 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4333 if (callback
!= NULL
) {
4335 * If we are validating CT, then we MUST accept SCTs served via OCSP
4337 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4341 s
->ct_validation_callback
= callback
;
4342 s
->ct_validation_callback_arg
= arg
;
4347 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4348 ssl_ct_validation_cb callback
, void *arg
)
4351 * Since code exists that uses the custom extension handler for CT, look for
4352 * this and throw an error if they have already registered to use CT.
4354 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4355 TLSEXT_TYPE_signed_certificate_timestamp
))
4357 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4358 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4362 ctx
->ct_validation_callback
= callback
;
4363 ctx
->ct_validation_callback_arg
= arg
;
4367 int SSL_ct_is_enabled(const SSL
*s
)
4369 return s
->ct_validation_callback
!= NULL
;
4372 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4374 return ctx
->ct_validation_callback
!= NULL
;
4377 int ssl_validate_ct(SSL
*s
)
4380 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4382 SSL_DANE
*dane
= &s
->dane
;
4383 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4384 const STACK_OF(SCT
) *scts
;
4387 * If no callback is set, the peer is anonymous, or its chain is invalid,
4388 * skip SCT validation - just return success. Applications that continue
4389 * handshakes without certificates, with unverified chains, or pinned leaf
4390 * certificates are outside the scope of the WebPKI and CT.
4392 * The above exclusions notwithstanding the vast majority of peers will
4393 * have rather ordinary certificate chains validated by typical
4394 * applications that perform certificate verification and therefore will
4395 * process SCTs when enabled.
4397 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4398 s
->verify_result
!= X509_V_OK
||
4399 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4403 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4404 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4406 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4407 switch (dane
->mtlsa
->usage
) {
4408 case DANETLS_USAGE_DANE_TA
:
4409 case DANETLS_USAGE_DANE_EE
:
4414 ctx
= CT_POLICY_EVAL_CTX_new();
4416 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4420 issuer
= sk_X509_value(s
->verified_chain
, 1);
4421 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4422 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4423 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4424 CT_POLICY_EVAL_CTX_set_time(
4425 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4427 scts
= SSL_get0_peer_scts(s
);
4430 * This function returns success (> 0) only when all the SCTs are valid, 0
4431 * when some are invalid, and < 0 on various internal errors (out of
4432 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4433 * reason to abort the handshake, that decision is up to the callback.
4434 * Therefore, we error out only in the unexpected case that the return
4435 * value is negative.
4437 * XXX: One might well argue that the return value of this function is an
4438 * unfortunate design choice. Its job is only to determine the validation
4439 * status of each of the provided SCTs. So long as it correctly separates
4440 * the wheat from the chaff it should return success. Failure in this case
4441 * ought to correspond to an inability to carry out its duties.
4443 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4444 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4448 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4450 ret
= 0; /* This function returns 0 on failure */
4453 CT_POLICY_EVAL_CTX_free(ctx
);
4455 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4456 * failure return code here. Also the application may wish the complete
4457 * the handshake, and then disconnect cleanly at a higher layer, after
4458 * checking the verification status of the completed connection.
4460 * We therefore force a certificate verification failure which will be
4461 * visible via SSL_get_verify_result() and cached as part of any resumed
4464 * Note: the permissive callback is for information gathering only, always
4465 * returns success, and does not affect verification status. Only the
4466 * strict callback or a custom application-specified callback can trigger
4467 * connection failure or record a verification error.
4470 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4474 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4476 switch (validation_mode
) {
4478 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4480 case SSL_CT_VALIDATION_PERMISSIVE
:
4481 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4482 case SSL_CT_VALIDATION_STRICT
:
4483 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4487 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4489 switch (validation_mode
) {
4491 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4493 case SSL_CT_VALIDATION_PERMISSIVE
:
4494 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4495 case SSL_CT_VALIDATION_STRICT
:
4496 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4500 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4502 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4505 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4507 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4510 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4512 CTLOG_STORE_free(ctx
->ctlog_store
);
4513 ctx
->ctlog_store
= logs
;
4516 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4518 return ctx
->ctlog_store
;
4521 #endif /* OPENSSL_NO_CT */
4523 void SSL_CTX_set_early_cb(SSL_CTX
*c
, SSL_early_cb_fn cb
, void *arg
)
4526 c
->early_cb_arg
= arg
;
4529 int SSL_early_isv2(SSL
*s
)
4531 if (s
->clienthello
== NULL
)
4533 return s
->clienthello
->isv2
;
4536 unsigned int SSL_early_get0_legacy_version(SSL
*s
)
4538 if (s
->clienthello
== NULL
)
4540 return s
->clienthello
->legacy_version
;
4543 size_t SSL_early_get0_random(SSL
*s
, const unsigned char **out
)
4545 if (s
->clienthello
== NULL
)
4548 *out
= s
->clienthello
->random
;
4549 return SSL3_RANDOM_SIZE
;
4552 size_t SSL_early_get0_session_id(SSL
*s
, const unsigned char **out
)
4554 if (s
->clienthello
== NULL
)
4557 *out
= s
->clienthello
->session_id
;
4558 return s
->clienthello
->session_id_len
;
4561 size_t SSL_early_get0_ciphers(SSL
*s
, const unsigned char **out
)
4563 if (s
->clienthello
== NULL
)
4566 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4567 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4570 size_t SSL_early_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4572 if (s
->clienthello
== NULL
)
4575 *out
= s
->clienthello
->compressions
;
4576 return s
->clienthello
->compressions_len
;
4579 int SSL_early_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4585 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4587 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4588 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4592 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4593 if (present
== NULL
)
4595 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4596 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4598 if (ext
->received_order
>= num
)
4600 present
[ext
->received_order
] = ext
->type
;
4607 OPENSSL_free(present
);
4611 int SSL_early_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4617 if (s
->clienthello
== NULL
)
4619 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4620 r
= s
->clienthello
->pre_proc_exts
+ i
;
4621 if (r
->present
&& r
->type
== type
) {
4623 *out
= PACKET_data(&r
->data
);
4625 *outlen
= PACKET_remaining(&r
->data
);
4632 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4634 ctx
->keylog_callback
= cb
;
4637 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4639 return ctx
->keylog_callback
;
4642 static int nss_keylog_int(const char *prefix
,
4644 const uint8_t *parameter_1
,
4645 size_t parameter_1_len
,
4646 const uint8_t *parameter_2
,
4647 size_t parameter_2_len
)
4650 char *cursor
= NULL
;
4655 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4658 * Our output buffer will contain the following strings, rendered with
4659 * space characters in between, terminated by a NULL character: first the
4660 * prefix, then the first parameter, then the second parameter. The
4661 * meaning of each parameter depends on the specific key material being
4662 * logged. Note that the first and second parameters are encoded in
4663 * hexadecimal, so we need a buffer that is twice their lengths.
4665 prefix_len
= strlen(prefix
);
4666 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4667 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4668 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4672 strcpy(cursor
, prefix
);
4673 cursor
+= prefix_len
;
4676 for (i
= 0; i
< parameter_1_len
; i
++) {
4677 sprintf(cursor
, "%02x", parameter_1
[i
]);
4682 for (i
= 0; i
< parameter_2_len
; i
++) {
4683 sprintf(cursor
, "%02x", parameter_2
[i
]);
4688 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4694 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4695 const uint8_t *encrypted_premaster
,
4696 size_t encrypted_premaster_len
,
4697 const uint8_t *premaster
,
4698 size_t premaster_len
)
4700 if (encrypted_premaster_len
< 8) {
4701 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4705 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4706 return nss_keylog_int("RSA",
4708 encrypted_premaster
,
4714 int ssl_log_secret(SSL
*ssl
,
4716 const uint8_t *secret
,
4719 return nss_keylog_int(label
,
4721 ssl
->s3
->client_random
,
4727 #define SSLV2_CIPHER_LEN 3
4729 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4734 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4736 if (PACKET_remaining(cipher_suites
) == 0) {
4737 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4738 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4742 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4743 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4744 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4745 *al
= SSL_AD_DECODE_ERROR
;
4749 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4750 s
->s3
->tmp
.ciphers_raw
= NULL
;
4751 s
->s3
->tmp
.ciphers_rawlen
= 0;
4754 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4755 PACKET sslv2ciphers
= *cipher_suites
;
4756 unsigned int leadbyte
;
4760 * We store the raw ciphers list in SSLv3+ format so we need to do some
4761 * preprocessing to convert the list first. If there are any SSLv2 only
4762 * ciphersuites with a non-zero leading byte then we are going to
4763 * slightly over allocate because we won't store those. But that isn't a
4766 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4767 s
->s3
->tmp
.ciphers_raw
= raw
;
4769 *al
= SSL_AD_INTERNAL_ERROR
;
4772 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4773 PACKET_remaining(&sslv2ciphers
) > 0;
4774 raw
+= TLS_CIPHER_LEN
) {
4775 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4777 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4780 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4781 *al
= SSL_AD_DECODE_ERROR
;
4782 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4783 s
->s3
->tmp
.ciphers_raw
= NULL
;
4784 s
->s3
->tmp
.ciphers_rawlen
= 0;
4788 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4790 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4791 &s
->s3
->tmp
.ciphers_rawlen
)) {
4792 *al
= SSL_AD_INTERNAL_ERROR
;
4800 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
4801 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
4802 STACK_OF(SSL_CIPHER
) **scsvs
)
4807 if (!PACKET_buf_init(&pkt
, bytes
, len
))
4809 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
4812 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
4813 STACK_OF(SSL_CIPHER
) **skp
,
4814 STACK_OF(SSL_CIPHER
) **scsvs_out
,
4815 int sslv2format
, int *al
)
4817 const SSL_CIPHER
*c
;
4818 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
4819 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
4821 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4822 unsigned char cipher
[SSLV2_CIPHER_LEN
];
4824 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4826 if (PACKET_remaining(cipher_suites
) == 0) {
4827 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4828 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4832 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4833 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
4834 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4835 *al
= SSL_AD_DECODE_ERROR
;
4839 sk
= sk_SSL_CIPHER_new_null();
4840 scsvs
= sk_SSL_CIPHER_new_null();
4841 if (sk
== NULL
|| scsvs
== NULL
) {
4842 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4843 *al
= SSL_AD_INTERNAL_ERROR
;
4847 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
4849 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
4850 * first byte set to zero, while true SSLv2 ciphers have a non-zero
4851 * first byte. We don't support any true SSLv2 ciphers, so skip them.
4853 if (sslv2format
&& cipher
[0] != '\0')
4856 /* For SSLv2-compat, ignore leading 0-byte. */
4857 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
4859 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
4860 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
4861 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4862 *al
= SSL_AD_INTERNAL_ERROR
;
4867 if (PACKET_remaining(cipher_suites
) > 0) {
4868 *al
= SSL_AD_DECODE_ERROR
;
4869 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
4876 sk_SSL_CIPHER_free(sk
);
4877 if (scsvs_out
!= NULL
)
4880 sk_SSL_CIPHER_free(scsvs
);
4883 sk_SSL_CIPHER_free(sk
);
4884 sk_SSL_CIPHER_free(scsvs
);
4888 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
4890 ctx
->max_early_data
= max_early_data
;
4895 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
4897 return ctx
->max_early_data
;
4900 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
4902 s
->max_early_data
= max_early_data
;
4907 uint32_t SSL_get_max_early_data(const SSL
*s
)
4909 return s
->max_early_data
;