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
);
427 if (s
->renegotiate
) {
428 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
432 ossl_statem_clear(s
);
434 s
->version
= s
->method
->version
;
435 s
->client_version
= s
->version
;
436 s
->rwstate
= SSL_NOTHING
;
438 BUF_MEM_free(s
->init_buf
);
443 s
->key_update
= SSL_KEY_UPDATE_NONE
;
445 /* Reset DANE verification result state */
448 X509_free(s
->dane
.mcert
);
449 s
->dane
.mcert
= NULL
;
450 s
->dane
.mtlsa
= NULL
;
452 /* Clear the verification result peername */
453 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
456 * Check to see if we were changed into a different method, if so, revert
457 * back if we are not doing session-id reuse.
459 if (!ossl_statem_get_in_handshake(s
) && (s
->session
== NULL
)
460 && (s
->method
!= s
->ctx
->method
)) {
461 s
->method
->ssl_free(s
);
462 s
->method
= s
->ctx
->method
;
463 if (!s
->method
->ssl_new(s
))
466 if (!s
->method
->ssl_clear(s
))
470 RECORD_LAYER_clear(&s
->rlayer
);
475 /** Used to change an SSL_CTXs default SSL method type */
476 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
478 STACK_OF(SSL_CIPHER
) *sk
;
482 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
483 &(ctx
->cipher_list_by_id
),
484 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
485 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
486 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
492 SSL
*SSL_new(SSL_CTX
*ctx
)
497 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
500 if (ctx
->method
== NULL
) {
501 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
505 s
= OPENSSL_zalloc(sizeof(*s
));
509 s
->lock
= CRYPTO_THREAD_lock_new();
510 if (s
->lock
== NULL
) {
511 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
516 RECORD_LAYER_init(&s
->rlayer
, s
);
518 s
->options
= ctx
->options
;
519 s
->dane
.flags
= ctx
->dane
.flags
;
520 s
->min_proto_version
= ctx
->min_proto_version
;
521 s
->max_proto_version
= ctx
->max_proto_version
;
523 s
->max_cert_list
= ctx
->max_cert_list
;
525 s
->max_early_data
= ctx
->max_early_data
;
528 * Earlier library versions used to copy the pointer to the CERT, not
529 * its contents; only when setting new parameters for the per-SSL
530 * copy, ssl_cert_new would be called (and the direct reference to
531 * the per-SSL_CTX settings would be lost, but those still were
532 * indirectly accessed for various purposes, and for that reason they
533 * used to be known as s->ctx->default_cert). Now we don't look at the
534 * SSL_CTX's CERT after having duplicated it once.
536 s
->cert
= ssl_cert_dup(ctx
->cert
);
540 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
541 s
->msg_callback
= ctx
->msg_callback
;
542 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
543 s
->verify_mode
= ctx
->verify_mode
;
544 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
545 s
->record_padding_cb
= ctx
->record_padding_cb
;
546 s
->record_padding_arg
= ctx
->record_padding_arg
;
547 s
->block_padding
= ctx
->block_padding
;
548 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
549 if (!ossl_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
))
551 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
552 s
->verify_callback
= ctx
->default_verify_callback
;
553 s
->generate_session_id
= ctx
->generate_session_id
;
555 s
->param
= X509_VERIFY_PARAM_new();
556 if (s
->param
== NULL
)
558 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
559 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
560 s
->max_send_fragment
= ctx
->max_send_fragment
;
561 s
->split_send_fragment
= ctx
->split_send_fragment
;
562 s
->max_pipelines
= ctx
->max_pipelines
;
563 if (s
->max_pipelines
> 1)
564 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
565 if (ctx
->default_read_buf_len
> 0)
566 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
571 s
->ext
.debug_arg
= NULL
;
572 s
->ext
.ticket_expected
= 0;
573 s
->ext
.status_type
= ctx
->ext
.status_type
;
574 s
->ext
.status_expected
= 0;
575 s
->ext
.ocsp
.ids
= NULL
;
576 s
->ext
.ocsp
.exts
= NULL
;
577 s
->ext
.ocsp
.resp
= NULL
;
578 s
->ext
.ocsp
.resp_len
= 0;
580 s
->session_ctx
= ctx
;
581 #ifndef OPENSSL_NO_EC
582 if (ctx
->ext
.ecpointformats
) {
583 s
->ext
.ecpointformats
=
584 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
585 ctx
->ext
.ecpointformats_len
);
586 if (!s
->ext
.ecpointformats
)
588 s
->ext
.ecpointformats_len
=
589 ctx
->ext
.ecpointformats_len
;
591 if (ctx
->ext
.supportedgroups
) {
592 s
->ext
.supportedgroups
=
593 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
594 ctx
->ext
.supportedgroups_len
);
595 if (!s
->ext
.supportedgroups
)
597 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
600 #ifndef OPENSSL_NO_NEXTPROTONEG
604 if (s
->ctx
->ext
.alpn
) {
605 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
606 if (s
->ext
.alpn
== NULL
)
608 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
609 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
612 s
->verified_chain
= NULL
;
613 s
->verify_result
= X509_V_OK
;
615 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
616 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
618 s
->method
= ctx
->method
;
620 s
->key_update
= SSL_KEY_UPDATE_NONE
;
622 if (!s
->method
->ssl_new(s
))
625 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
630 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
633 #ifndef OPENSSL_NO_PSK
634 s
->psk_client_callback
= ctx
->psk_client_callback
;
635 s
->psk_server_callback
= ctx
->psk_server_callback
;
640 #ifndef OPENSSL_NO_CT
641 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
642 ctx
->ct_validation_callback_arg
))
649 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
653 int SSL_is_dtls(const SSL
*s
)
655 return SSL_IS_DTLS(s
) ? 1 : 0;
658 int SSL_up_ref(SSL
*s
)
662 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
665 REF_PRINT_COUNT("SSL", s
);
666 REF_ASSERT_ISNT(i
< 2);
667 return ((i
> 1) ? 1 : 0);
670 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
671 unsigned int sid_ctx_len
)
673 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
674 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
675 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
678 ctx
->sid_ctx_length
= sid_ctx_len
;
679 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
684 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
685 unsigned int sid_ctx_len
)
687 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
688 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
689 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
692 ssl
->sid_ctx_length
= sid_ctx_len
;
693 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
698 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
700 CRYPTO_THREAD_write_lock(ctx
->lock
);
701 ctx
->generate_session_id
= cb
;
702 CRYPTO_THREAD_unlock(ctx
->lock
);
706 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
708 CRYPTO_THREAD_write_lock(ssl
->lock
);
709 ssl
->generate_session_id
= cb
;
710 CRYPTO_THREAD_unlock(ssl
->lock
);
714 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
718 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
719 * we can "construct" a session to give us the desired check - i.e. to
720 * find if there's a session in the hash table that would conflict with
721 * any new session built out of this id/id_len and the ssl_version in use
726 if (id_len
> sizeof r
.session_id
)
729 r
.ssl_version
= ssl
->version
;
730 r
.session_id_length
= id_len
;
731 memcpy(r
.session_id
, id
, id_len
);
733 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
734 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
735 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
739 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
741 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
744 int SSL_set_purpose(SSL
*s
, int purpose
)
746 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
749 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
751 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
754 int SSL_set_trust(SSL
*s
, int trust
)
756 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
759 int SSL_set1_host(SSL
*s
, const char *hostname
)
761 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
764 int SSL_add1_host(SSL
*s
, const char *hostname
)
766 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
769 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
771 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
774 const char *SSL_get0_peername(SSL
*s
)
776 return X509_VERIFY_PARAM_get0_peername(s
->param
);
779 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
781 return dane_ctx_enable(&ctx
->dane
);
784 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
786 unsigned long orig
= ctx
->dane
.flags
;
788 ctx
->dane
.flags
|= flags
;
792 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
794 unsigned long orig
= ctx
->dane
.flags
;
796 ctx
->dane
.flags
&= ~flags
;
800 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
802 SSL_DANE
*dane
= &s
->dane
;
804 if (s
->ctx
->dane
.mdmax
== 0) {
805 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
808 if (dane
->trecs
!= NULL
) {
809 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
814 * Default SNI name. This rejects empty names, while set1_host below
815 * accepts them and disables host name checks. To avoid side-effects with
816 * invalid input, set the SNI name first.
818 if (s
->ext
.hostname
== NULL
) {
819 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
820 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
825 /* Primary RFC6125 reference identifier */
826 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
827 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
833 dane
->dctx
= &s
->ctx
->dane
;
834 dane
->trecs
= sk_danetls_record_new_null();
836 if (dane
->trecs
== NULL
) {
837 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
843 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
845 unsigned long orig
= ssl
->dane
.flags
;
847 ssl
->dane
.flags
|= flags
;
851 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
853 unsigned long orig
= ssl
->dane
.flags
;
855 ssl
->dane
.flags
&= ~flags
;
859 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
861 SSL_DANE
*dane
= &s
->dane
;
863 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
867 *mcert
= dane
->mcert
;
869 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
874 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
875 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
877 SSL_DANE
*dane
= &s
->dane
;
879 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
883 *usage
= dane
->mtlsa
->usage
;
885 *selector
= dane
->mtlsa
->selector
;
887 *mtype
= dane
->mtlsa
->mtype
;
889 *data
= dane
->mtlsa
->data
;
891 *dlen
= dane
->mtlsa
->dlen
;
896 SSL_DANE
*SSL_get0_dane(SSL
*s
)
901 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
902 uint8_t mtype
, unsigned char *data
, size_t dlen
)
904 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
907 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
910 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
913 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
915 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
918 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
920 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
923 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
928 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
933 void SSL_certs_clear(SSL
*s
)
935 ssl_cert_clear_certs(s
->cert
);
938 void SSL_free(SSL
*s
)
945 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
946 REF_PRINT_COUNT("SSL", s
);
949 REF_ASSERT_ISNT(i
< 0);
951 X509_VERIFY_PARAM_free(s
->param
);
952 dane_final(&s
->dane
);
953 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
955 /* Ignore return value */
956 ssl_free_wbio_buffer(s
);
958 BIO_free_all(s
->wbio
);
959 BIO_free_all(s
->rbio
);
961 BUF_MEM_free(s
->init_buf
);
963 /* add extra stuff */
964 sk_SSL_CIPHER_free(s
->cipher_list
);
965 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
967 /* Make the next call work :-) */
968 if (s
->session
!= NULL
) {
969 ssl_clear_bad_session(s
);
970 SSL_SESSION_free(s
->session
);
975 ssl_cert_free(s
->cert
);
976 /* Free up if allocated */
978 OPENSSL_free(s
->ext
.hostname
);
979 SSL_CTX_free(s
->session_ctx
);
980 #ifndef OPENSSL_NO_EC
981 OPENSSL_free(s
->ext
.ecpointformats
);
982 OPENSSL_free(s
->ext
.supportedgroups
);
983 #endif /* OPENSSL_NO_EC */
984 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
985 #ifndef OPENSSL_NO_OCSP
986 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
988 #ifndef OPENSSL_NO_CT
989 SCT_LIST_free(s
->scts
);
990 OPENSSL_free(s
->ext
.scts
);
992 OPENSSL_free(s
->ext
.ocsp
.resp
);
993 OPENSSL_free(s
->ext
.alpn
);
994 OPENSSL_free(s
->ext
.tls13_cookie
);
995 OPENSSL_free(s
->clienthello
);
997 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
999 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1001 if (s
->method
!= NULL
)
1002 s
->method
->ssl_free(s
);
1004 RECORD_LAYER_release(&s
->rlayer
);
1006 SSL_CTX_free(s
->ctx
);
1008 ASYNC_WAIT_CTX_free(s
->waitctx
);
1010 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1011 OPENSSL_free(s
->ext
.npn
);
1014 #ifndef OPENSSL_NO_SRTP
1015 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1018 CRYPTO_THREAD_lock_free(s
->lock
);
1023 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1025 BIO_free_all(s
->rbio
);
1029 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1032 * If the output buffering BIO is still in place, remove it
1034 if (s
->bbio
!= NULL
)
1035 s
->wbio
= BIO_pop(s
->wbio
);
1037 BIO_free_all(s
->wbio
);
1040 /* Re-attach |bbio| to the new |wbio|. */
1041 if (s
->bbio
!= NULL
)
1042 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1045 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1048 * For historical reasons, this function has many different cases in
1049 * ownership handling.
1052 /* If nothing has changed, do nothing */
1053 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1057 * If the two arguments are equal then one fewer reference is granted by the
1058 * caller than we want to take
1060 if (rbio
!= NULL
&& rbio
== wbio
)
1064 * If only the wbio is changed only adopt one reference.
1066 if (rbio
== SSL_get_rbio(s
)) {
1067 SSL_set0_wbio(s
, wbio
);
1071 * There is an asymmetry here for historical reasons. If only the rbio is
1072 * changed AND the rbio and wbio were originally different, then we only
1073 * adopt one reference.
1075 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1076 SSL_set0_rbio(s
, rbio
);
1080 /* Otherwise, adopt both references. */
1081 SSL_set0_rbio(s
, rbio
);
1082 SSL_set0_wbio(s
, wbio
);
1085 BIO
*SSL_get_rbio(const SSL
*s
)
1090 BIO
*SSL_get_wbio(const SSL
*s
)
1092 if (s
->bbio
!= NULL
) {
1094 * If |bbio| is active, the true caller-configured BIO is its
1097 return BIO_next(s
->bbio
);
1102 int SSL_get_fd(const SSL
*s
)
1104 return SSL_get_rfd(s
);
1107 int SSL_get_rfd(const SSL
*s
)
1112 b
= SSL_get_rbio(s
);
1113 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1115 BIO_get_fd(r
, &ret
);
1119 int SSL_get_wfd(const SSL
*s
)
1124 b
= SSL_get_wbio(s
);
1125 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1127 BIO_get_fd(r
, &ret
);
1131 #ifndef OPENSSL_NO_SOCK
1132 int SSL_set_fd(SSL
*s
, int fd
)
1137 bio
= BIO_new(BIO_s_socket());
1140 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1143 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1144 SSL_set_bio(s
, bio
, bio
);
1150 int SSL_set_wfd(SSL
*s
, int fd
)
1152 BIO
*rbio
= SSL_get_rbio(s
);
1154 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1155 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1156 BIO
*bio
= BIO_new(BIO_s_socket());
1159 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1162 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1163 SSL_set0_wbio(s
, bio
);
1166 SSL_set0_wbio(s
, rbio
);
1171 int SSL_set_rfd(SSL
*s
, int fd
)
1173 BIO
*wbio
= SSL_get_wbio(s
);
1175 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1176 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1177 BIO
*bio
= BIO_new(BIO_s_socket());
1180 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1183 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1184 SSL_set0_rbio(s
, bio
);
1187 SSL_set0_rbio(s
, wbio
);
1194 /* return length of latest Finished message we sent, copy to 'buf' */
1195 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1199 if (s
->s3
!= NULL
) {
1200 ret
= s
->s3
->tmp
.finish_md_len
;
1203 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1208 /* return length of latest Finished message we expected, copy to 'buf' */
1209 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1213 if (s
->s3
!= NULL
) {
1214 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1217 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1222 int SSL_get_verify_mode(const SSL
*s
)
1224 return (s
->verify_mode
);
1227 int SSL_get_verify_depth(const SSL
*s
)
1229 return X509_VERIFY_PARAM_get_depth(s
->param
);
1232 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1233 return (s
->verify_callback
);
1236 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1238 return (ctx
->verify_mode
);
1241 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1243 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1246 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1247 return (ctx
->default_verify_callback
);
1250 void SSL_set_verify(SSL
*s
, int mode
,
1251 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1253 s
->verify_mode
= mode
;
1254 if (callback
!= NULL
)
1255 s
->verify_callback
= callback
;
1258 void SSL_set_verify_depth(SSL
*s
, int depth
)
1260 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1263 void SSL_set_read_ahead(SSL
*s
, int yes
)
1265 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1268 int SSL_get_read_ahead(const SSL
*s
)
1270 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1273 int SSL_pending(const SSL
*s
)
1275 size_t pending
= s
->method
->ssl_pending(s
);
1278 * SSL_pending cannot work properly if read-ahead is enabled
1279 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1280 * impossible to fix since SSL_pending cannot report errors that may be
1281 * observed while scanning the new data. (Note that SSL_pending() is
1282 * often used as a boolean value, so we'd better not return -1.)
1284 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1285 * we just return INT_MAX.
1287 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1290 int SSL_has_pending(const SSL
*s
)
1293 * Similar to SSL_pending() but returns a 1 to indicate that we have
1294 * unprocessed data available or 0 otherwise (as opposed to the number of
1295 * bytes available). Unlike SSL_pending() this will take into account
1296 * read_ahead data. A 1 return simply indicates that we have unprocessed
1297 * data. That data may not result in any application data, or we may fail
1298 * to parse the records for some reason.
1300 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1303 return RECORD_LAYER_read_pending(&s
->rlayer
);
1306 X509
*SSL_get_peer_certificate(const SSL
*s
)
1310 if ((s
== NULL
) || (s
->session
== NULL
))
1313 r
= s
->session
->peer
;
1323 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1327 if ((s
== NULL
) || (s
->session
== NULL
))
1330 r
= s
->session
->peer_chain
;
1333 * If we are a client, cert_chain includes the peer's own certificate; if
1334 * we are a server, it does not.
1341 * Now in theory, since the calling process own 't' it should be safe to
1342 * modify. We need to be able to read f without being hassled
1344 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1347 /* Do we need to to SSL locking? */
1348 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1353 * what if we are setup for one protocol version but want to talk another
1355 if (t
->method
!= f
->method
) {
1356 t
->method
->ssl_free(t
);
1357 t
->method
= f
->method
;
1358 if (t
->method
->ssl_new(t
) == 0)
1362 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1363 ssl_cert_free(t
->cert
);
1365 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1372 /* Fix this so it checks all the valid key/cert options */
1373 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1375 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1376 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1379 if (ctx
->cert
->key
->privatekey
== NULL
) {
1380 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1383 return (X509_check_private_key
1384 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1387 /* Fix this function so that it takes an optional type parameter */
1388 int SSL_check_private_key(const SSL
*ssl
)
1391 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1394 if (ssl
->cert
->key
->x509
== NULL
) {
1395 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1398 if (ssl
->cert
->key
->privatekey
== NULL
) {
1399 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1402 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1403 ssl
->cert
->key
->privatekey
));
1406 int SSL_waiting_for_async(SSL
*s
)
1414 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1416 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1420 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1423 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1424 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1426 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1430 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1434 int SSL_accept(SSL
*s
)
1436 if (s
->handshake_func
== NULL
) {
1437 /* Not properly initialized yet */
1438 SSL_set_accept_state(s
);
1441 return SSL_do_handshake(s
);
1444 int SSL_connect(SSL
*s
)
1446 if (s
->handshake_func
== NULL
) {
1447 /* Not properly initialized yet */
1448 SSL_set_connect_state(s
);
1451 return SSL_do_handshake(s
);
1454 long SSL_get_default_timeout(const SSL
*s
)
1456 return (s
->method
->get_timeout());
1459 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1460 int (*func
) (void *))
1463 if (s
->waitctx
== NULL
) {
1464 s
->waitctx
= ASYNC_WAIT_CTX_new();
1465 if (s
->waitctx
== NULL
)
1468 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1469 sizeof(struct ssl_async_args
))) {
1471 s
->rwstate
= SSL_NOTHING
;
1472 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1475 s
->rwstate
= SSL_ASYNC_PAUSED
;
1478 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1484 s
->rwstate
= SSL_NOTHING
;
1485 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1486 /* Shouldn't happen */
1491 static int ssl_io_intern(void *vargs
)
1493 struct ssl_async_args
*args
;
1498 args
= (struct ssl_async_args
*)vargs
;
1502 switch (args
->type
) {
1504 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1506 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1508 return args
->f
.func_other(s
);
1513 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1515 if (s
->handshake_func
== NULL
) {
1516 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1520 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1521 s
->rwstate
= SSL_NOTHING
;
1525 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1526 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1527 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1531 * If we are a client and haven't received the ServerHello etc then we
1534 ossl_statem_check_finish_init(s
, 0);
1536 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1537 struct ssl_async_args args
;
1543 args
.type
= READFUNC
;
1544 args
.f
.func_read
= s
->method
->ssl_read
;
1546 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1547 *readbytes
= s
->asyncrw
;
1550 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1554 int SSL_read(SSL
*s
, void *buf
, int num
)
1560 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1564 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1567 * The cast is safe here because ret should be <= INT_MAX because num is
1571 ret
= (int)readbytes
;
1576 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1578 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1585 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1590 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1591 return SSL_READ_EARLY_DATA_ERROR
;
1594 switch (s
->early_data_state
) {
1595 case SSL_EARLY_DATA_NONE
:
1596 if (!SSL_in_before(s
)) {
1597 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1598 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1599 return SSL_READ_EARLY_DATA_ERROR
;
1603 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1604 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1605 ret
= SSL_accept(s
);
1608 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1609 return SSL_READ_EARLY_DATA_ERROR
;
1613 case SSL_EARLY_DATA_READ_RETRY
:
1614 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1615 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1616 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1618 * State machine will update early_data_state to
1619 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1622 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1623 != SSL_EARLY_DATA_FINISHED_READING
)) {
1624 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1625 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1626 : SSL_READ_EARLY_DATA_ERROR
;
1629 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1632 return SSL_READ_EARLY_DATA_FINISH
;
1635 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1636 return SSL_READ_EARLY_DATA_ERROR
;
1640 int SSL_get_early_data_status(const SSL
*s
)
1642 return s
->ext
.early_data
;
1645 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1647 if (s
->handshake_func
== NULL
) {
1648 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1652 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1655 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1656 struct ssl_async_args args
;
1662 args
.type
= READFUNC
;
1663 args
.f
.func_read
= s
->method
->ssl_peek
;
1665 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1666 *readbytes
= s
->asyncrw
;
1669 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1673 int SSL_peek(SSL
*s
, void *buf
, int num
)
1679 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1683 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1686 * The cast is safe here because ret should be <= INT_MAX because num is
1690 ret
= (int)readbytes
;
1696 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1698 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1705 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1707 if (s
->handshake_func
== NULL
) {
1708 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1712 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1713 s
->rwstate
= SSL_NOTHING
;
1714 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1718 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1719 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1720 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1721 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1724 /* If we are a client and haven't sent the Finished we better do that */
1725 ossl_statem_check_finish_init(s
, 1);
1727 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1729 struct ssl_async_args args
;
1732 args
.buf
= (void *)buf
;
1734 args
.type
= WRITEFUNC
;
1735 args
.f
.func_write
= s
->method
->ssl_write
;
1737 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1738 *written
= s
->asyncrw
;
1741 return s
->method
->ssl_write(s
, buf
, num
, written
);
1745 int SSL_write(SSL
*s
, const void *buf
, int num
)
1751 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1755 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1758 * The cast is safe here because ret should be <= INT_MAX because num is
1767 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1769 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1776 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1778 int ret
, early_data_state
;
1780 switch (s
->early_data_state
) {
1781 case SSL_EARLY_DATA_NONE
:
1783 || !SSL_in_before(s
)
1784 || s
->session
== NULL
1785 || s
->session
->ext
.max_early_data
== 0) {
1786 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1787 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1792 case SSL_EARLY_DATA_CONNECT_RETRY
:
1793 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1794 ret
= SSL_connect(s
);
1797 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1802 case SSL_EARLY_DATA_WRITE_RETRY
:
1803 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1804 ret
= SSL_write_ex(s
, buf
, num
, written
);
1805 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1808 case SSL_EARLY_DATA_FINISHED_READING
:
1809 case SSL_EARLY_DATA_READ_RETRY
:
1810 early_data_state
= s
->early_data_state
;
1811 /* We are a server writing to an unauthenticated client */
1812 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1813 ret
= SSL_write_ex(s
, buf
, num
, written
);
1814 s
->early_data_state
= early_data_state
;
1818 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1823 int SSL_shutdown(SSL
*s
)
1826 * Note that this function behaves differently from what one might
1827 * expect. Return values are 0 for no success (yet), 1 for success; but
1828 * calling it once is usually not enough, even if blocking I/O is used
1829 * (see ssl3_shutdown).
1832 if (s
->handshake_func
== NULL
) {
1833 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1837 if (!SSL_in_init(s
)) {
1838 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1839 struct ssl_async_args args
;
1842 args
.type
= OTHERFUNC
;
1843 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1845 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1847 return s
->method
->ssl_shutdown(s
);
1850 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1855 int SSL_key_update(SSL
*s
, int updatetype
)
1858 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1859 * negotiated, and that it is appropriate to call SSL_key_update() instead
1860 * of SSL_renegotiate().
1862 if (!SSL_IS_TLS13(s
)) {
1863 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
1867 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
1868 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
1869 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
1873 if (!SSL_is_init_finished(s
)) {
1874 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
1878 ossl_statem_set_in_init(s
, 1);
1879 s
->key_update
= updatetype
;
1883 int SSL_get_key_update_type(SSL
*s
)
1885 return s
->key_update
;
1888 int SSL_renegotiate(SSL
*s
)
1890 if (SSL_IS_TLS13(s
)) {
1891 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
1895 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
1896 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
1903 return (s
->method
->ssl_renegotiate(s
));
1906 int SSL_renegotiate_abbreviated(SSL
*s
)
1908 if (SSL_IS_TLS13(s
)) {
1909 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
1913 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
1914 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
1921 return (s
->method
->ssl_renegotiate(s
));
1924 int SSL_renegotiate_pending(SSL
*s
)
1927 * becomes true when negotiation is requested; false again once a
1928 * handshake has finished
1930 return (s
->renegotiate
!= 0);
1933 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
1938 case SSL_CTRL_GET_READ_AHEAD
:
1939 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
1940 case SSL_CTRL_SET_READ_AHEAD
:
1941 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1942 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
1945 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1946 s
->msg_callback_arg
= parg
;
1950 return (s
->mode
|= larg
);
1951 case SSL_CTRL_CLEAR_MODE
:
1952 return (s
->mode
&= ~larg
);
1953 case SSL_CTRL_GET_MAX_CERT_LIST
:
1954 return (long)(s
->max_cert_list
);
1955 case SSL_CTRL_SET_MAX_CERT_LIST
:
1958 l
= (long)s
->max_cert_list
;
1959 s
->max_cert_list
= (size_t)larg
;
1961 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1962 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1964 s
->max_send_fragment
= larg
;
1965 if (s
->max_send_fragment
< s
->split_send_fragment
)
1966 s
->split_send_fragment
= s
->max_send_fragment
;
1968 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
1969 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
1971 s
->split_send_fragment
= larg
;
1973 case SSL_CTRL_SET_MAX_PIPELINES
:
1974 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
1976 s
->max_pipelines
= larg
;
1978 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
1980 case SSL_CTRL_GET_RI_SUPPORT
:
1982 return s
->s3
->send_connection_binding
;
1985 case SSL_CTRL_CERT_FLAGS
:
1986 return (s
->cert
->cert_flags
|= larg
);
1987 case SSL_CTRL_CLEAR_CERT_FLAGS
:
1988 return (s
->cert
->cert_flags
&= ~larg
);
1990 case SSL_CTRL_GET_RAW_CIPHERLIST
:
1992 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
1994 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
1995 return (int)s
->s3
->tmp
.ciphers_rawlen
;
1997 return TLS_CIPHER_LEN
;
1999 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2000 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2002 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2006 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2007 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2008 &s
->min_proto_version
);
2009 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2010 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2011 &s
->max_proto_version
);
2013 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2017 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2020 case SSL_CTRL_SET_MSG_CALLBACK
:
2021 s
->msg_callback
= (void (*)
2022 (int write_p
, int version
, int content_type
,
2023 const void *buf
, size_t len
, SSL
*ssl
,
2028 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2032 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2034 return ctx
->sessions
;
2037 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2040 /* For some cases with ctx == NULL perform syntax checks */
2043 #ifndef OPENSSL_NO_EC
2044 case SSL_CTRL_SET_GROUPS_LIST
:
2045 return tls1_set_groups_list(NULL
, NULL
, parg
);
2047 case SSL_CTRL_SET_SIGALGS_LIST
:
2048 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2049 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2056 case SSL_CTRL_GET_READ_AHEAD
:
2057 return (ctx
->read_ahead
);
2058 case SSL_CTRL_SET_READ_AHEAD
:
2059 l
= ctx
->read_ahead
;
2060 ctx
->read_ahead
= larg
;
2063 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2064 ctx
->msg_callback_arg
= parg
;
2067 case SSL_CTRL_GET_MAX_CERT_LIST
:
2068 return (long)(ctx
->max_cert_list
);
2069 case SSL_CTRL_SET_MAX_CERT_LIST
:
2072 l
= (long)ctx
->max_cert_list
;
2073 ctx
->max_cert_list
= (size_t)larg
;
2076 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2079 l
= (long)ctx
->session_cache_size
;
2080 ctx
->session_cache_size
= (size_t)larg
;
2082 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2083 return (long)(ctx
->session_cache_size
);
2084 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2085 l
= ctx
->session_cache_mode
;
2086 ctx
->session_cache_mode
= larg
;
2088 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2089 return (ctx
->session_cache_mode
);
2091 case SSL_CTRL_SESS_NUMBER
:
2092 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2093 case SSL_CTRL_SESS_CONNECT
:
2094 return (ctx
->stats
.sess_connect
);
2095 case SSL_CTRL_SESS_CONNECT_GOOD
:
2096 return (ctx
->stats
.sess_connect_good
);
2097 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2098 return (ctx
->stats
.sess_connect_renegotiate
);
2099 case SSL_CTRL_SESS_ACCEPT
:
2100 return (ctx
->stats
.sess_accept
);
2101 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2102 return (ctx
->stats
.sess_accept_good
);
2103 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2104 return (ctx
->stats
.sess_accept_renegotiate
);
2105 case SSL_CTRL_SESS_HIT
:
2106 return (ctx
->stats
.sess_hit
);
2107 case SSL_CTRL_SESS_CB_HIT
:
2108 return (ctx
->stats
.sess_cb_hit
);
2109 case SSL_CTRL_SESS_MISSES
:
2110 return (ctx
->stats
.sess_miss
);
2111 case SSL_CTRL_SESS_TIMEOUTS
:
2112 return (ctx
->stats
.sess_timeout
);
2113 case SSL_CTRL_SESS_CACHE_FULL
:
2114 return (ctx
->stats
.sess_cache_full
);
2116 return (ctx
->mode
|= larg
);
2117 case SSL_CTRL_CLEAR_MODE
:
2118 return (ctx
->mode
&= ~larg
);
2119 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2120 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2122 ctx
->max_send_fragment
= larg
;
2123 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2124 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2126 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2127 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2129 ctx
->split_send_fragment
= larg
;
2131 case SSL_CTRL_SET_MAX_PIPELINES
:
2132 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2134 ctx
->max_pipelines
= larg
;
2136 case SSL_CTRL_CERT_FLAGS
:
2137 return (ctx
->cert
->cert_flags
|= larg
);
2138 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2139 return (ctx
->cert
->cert_flags
&= ~larg
);
2140 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2141 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2142 &ctx
->min_proto_version
);
2143 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2144 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2145 &ctx
->max_proto_version
);
2147 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2151 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2154 case SSL_CTRL_SET_MSG_CALLBACK
:
2155 ctx
->msg_callback
= (void (*)
2156 (int write_p
, int version
, int content_type
,
2157 const void *buf
, size_t len
, SSL
*ssl
,
2162 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2166 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2175 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2176 const SSL_CIPHER
*const *bp
)
2178 if ((*ap
)->id
> (*bp
)->id
)
2180 if ((*ap
)->id
< (*bp
)->id
)
2185 /** return a STACK of the ciphers available for the SSL and in order of
2187 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2190 if (s
->cipher_list
!= NULL
) {
2191 return (s
->cipher_list
);
2192 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2193 return (s
->ctx
->cipher_list
);
2199 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2201 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2203 return s
->session
->ciphers
;
2206 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2208 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2210 ciphers
= SSL_get_ciphers(s
);
2213 ssl_set_client_disabled(s
);
2214 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2215 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2216 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2218 sk
= sk_SSL_CIPHER_new_null();
2221 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2222 sk_SSL_CIPHER_free(sk
);
2230 /** return a STACK of the ciphers available for the SSL and in order of
2232 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2235 if (s
->cipher_list_by_id
!= NULL
) {
2236 return (s
->cipher_list_by_id
);
2237 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2238 return (s
->ctx
->cipher_list_by_id
);
2244 /** The old interface to get the same thing as SSL_get_ciphers() */
2245 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2247 const SSL_CIPHER
*c
;
2248 STACK_OF(SSL_CIPHER
) *sk
;
2252 sk
= SSL_get_ciphers(s
);
2253 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2255 c
= sk_SSL_CIPHER_value(sk
, n
);
2261 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2263 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2266 return ctx
->cipher_list
;
2270 /** specify the ciphers to be used by default by the SSL_CTX */
2271 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2273 STACK_OF(SSL_CIPHER
) *sk
;
2275 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2276 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2278 * ssl_create_cipher_list may return an empty stack if it was unable to
2279 * find a cipher matching the given rule string (for example if the rule
2280 * string specifies a cipher which has been disabled). This is not an
2281 * error as far as ssl_create_cipher_list is concerned, and hence
2282 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2286 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2287 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2293 /** specify the ciphers to be used by the SSL */
2294 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2296 STACK_OF(SSL_CIPHER
) *sk
;
2298 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2299 &s
->cipher_list_by_id
, str
, s
->cert
);
2300 /* see comment in SSL_CTX_set_cipher_list */
2303 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2304 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2310 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2313 STACK_OF(SSL_CIPHER
) *sk
;
2314 const SSL_CIPHER
*c
;
2317 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2321 sk
= s
->session
->ciphers
;
2323 if (sk_SSL_CIPHER_num(sk
) == 0)
2326 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2329 c
= sk_SSL_CIPHER_value(sk
, i
);
2330 n
= strlen(c
->name
);
2337 memcpy(p
, c
->name
, n
+ 1);
2346 /** return a servername extension value if provided in Client Hello, or NULL.
2347 * So far, only host_name types are defined (RFC 3546).
2350 const char *SSL_get_servername(const SSL
*s
, const int type
)
2352 if (type
!= TLSEXT_NAMETYPE_host_name
)
2355 return s
->session
&& !s
->ext
.hostname
?
2356 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2359 int SSL_get_servername_type(const SSL
*s
)
2362 && (!s
->ext
.hostname
? s
->session
->
2363 ext
.hostname
: s
->ext
.hostname
))
2364 return TLSEXT_NAMETYPE_host_name
;
2369 * SSL_select_next_proto implements the standard protocol selection. It is
2370 * expected that this function is called from the callback set by
2371 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2372 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2373 * not included in the length. A byte string of length 0 is invalid. No byte
2374 * string may be truncated. The current, but experimental algorithm for
2375 * selecting the protocol is: 1) If the server doesn't support NPN then this
2376 * is indicated to the callback. In this case, the client application has to
2377 * abort the connection or have a default application level protocol. 2) If
2378 * the server supports NPN, but advertises an empty list then the client
2379 * selects the first protocol in its list, but indicates via the API that this
2380 * fallback case was enacted. 3) Otherwise, the client finds the first
2381 * protocol in the server's list that it supports and selects this protocol.
2382 * This is because it's assumed that the server has better information about
2383 * which protocol a client should use. 4) If the client doesn't support any
2384 * of the server's advertised protocols, then this is treated the same as
2385 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2386 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2388 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2389 const unsigned char *server
,
2390 unsigned int server_len
,
2391 const unsigned char *client
, unsigned int client_len
)
2394 const unsigned char *result
;
2395 int status
= OPENSSL_NPN_UNSUPPORTED
;
2398 * For each protocol in server preference order, see if we support it.
2400 for (i
= 0; i
< server_len
;) {
2401 for (j
= 0; j
< client_len
;) {
2402 if (server
[i
] == client
[j
] &&
2403 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2404 /* We found a match */
2405 result
= &server
[i
];
2406 status
= OPENSSL_NPN_NEGOTIATED
;
2416 /* There's no overlap between our protocols and the server's list. */
2418 status
= OPENSSL_NPN_NO_OVERLAP
;
2421 *out
= (unsigned char *)result
+ 1;
2422 *outlen
= result
[0];
2426 #ifndef OPENSSL_NO_NEXTPROTONEG
2428 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2429 * client's requested protocol for this connection and returns 0. If the
2430 * client didn't request any protocol, then *data is set to NULL. Note that
2431 * the client can request any protocol it chooses. The value returned from
2432 * this function need not be a member of the list of supported protocols
2433 * provided by the callback.
2435 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2442 *len
= (unsigned int)s
->ext
.npn_len
;
2447 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2448 * a TLS server needs a list of supported protocols for Next Protocol
2449 * Negotiation. The returned list must be in wire format. The list is
2450 * returned by setting |out| to point to it and |outlen| to its length. This
2451 * memory will not be modified, but one should assume that the SSL* keeps a
2452 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2453 * wishes to advertise. Otherwise, no such extension will be included in the
2456 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2457 SSL_CTX_npn_advertised_cb_func cb
,
2460 ctx
->ext
.npn_advertised_cb
= cb
;
2461 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2465 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2466 * client needs to select a protocol from the server's provided list. |out|
2467 * must be set to point to the selected protocol (which may be within |in|).
2468 * The length of the protocol name must be written into |outlen|. The
2469 * server's advertised protocols are provided in |in| and |inlen|. The
2470 * callback can assume that |in| is syntactically valid. The client must
2471 * select a protocol. It is fatal to the connection if this callback returns
2472 * a value other than SSL_TLSEXT_ERR_OK.
2474 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2475 SSL_CTX_npn_select_cb_func cb
,
2478 ctx
->ext
.npn_select_cb
= cb
;
2479 ctx
->ext
.npn_select_cb_arg
= arg
;
2484 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2485 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2486 * length-prefixed strings). Returns 0 on success.
2488 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2489 unsigned int protos_len
)
2491 OPENSSL_free(ctx
->ext
.alpn
);
2492 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2493 if (ctx
->ext
.alpn
== NULL
) {
2494 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2497 ctx
->ext
.alpn_len
= protos_len
;
2503 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2504 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2505 * length-prefixed strings). Returns 0 on success.
2507 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2508 unsigned int protos_len
)
2510 OPENSSL_free(ssl
->ext
.alpn
);
2511 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2512 if (ssl
->ext
.alpn
== NULL
) {
2513 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2516 ssl
->ext
.alpn_len
= protos_len
;
2522 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2523 * called during ClientHello processing in order to select an ALPN protocol
2524 * from the client's list of offered protocols.
2526 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2527 SSL_CTX_alpn_select_cb_func cb
,
2530 ctx
->ext
.alpn_select_cb
= cb
;
2531 ctx
->ext
.alpn_select_cb_arg
= arg
;
2535 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2536 * On return it sets |*data| to point to |*len| bytes of protocol name
2537 * (not including the leading length-prefix byte). If the server didn't
2538 * respond with a negotiated protocol then |*len| will be zero.
2540 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2545 *data
= ssl
->s3
->alpn_selected
;
2549 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2552 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2553 const char *label
, size_t llen
,
2554 const unsigned char *p
, size_t plen
,
2557 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2560 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2565 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2567 const unsigned char *session_id
= a
->session_id
;
2569 unsigned char tmp_storage
[4];
2571 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2572 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2573 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2574 session_id
= tmp_storage
;
2578 ((unsigned long)session_id
[0]) |
2579 ((unsigned long)session_id
[1] << 8L) |
2580 ((unsigned long)session_id
[2] << 16L) |
2581 ((unsigned long)session_id
[3] << 24L);
2586 * NB: If this function (or indeed the hash function which uses a sort of
2587 * coarser function than this one) is changed, ensure
2588 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2589 * being able to construct an SSL_SESSION that will collide with any existing
2590 * session with a matching session ID.
2592 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2594 if (a
->ssl_version
!= b
->ssl_version
)
2596 if (a
->session_id_length
!= b
->session_id_length
)
2598 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2602 * These wrapper functions should remain rather than redeclaring
2603 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2604 * variable. The reason is that the functions aren't static, they're exposed
2608 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2610 SSL_CTX
*ret
= NULL
;
2613 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2617 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2620 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2621 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2624 ret
= OPENSSL_zalloc(sizeof(*ret
));
2629 ret
->min_proto_version
= 0;
2630 ret
->max_proto_version
= 0;
2631 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2632 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2633 /* We take the system default. */
2634 ret
->session_timeout
= meth
->get_timeout();
2635 ret
->references
= 1;
2636 ret
->lock
= CRYPTO_THREAD_lock_new();
2637 if (ret
->lock
== NULL
) {
2638 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2642 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2643 ret
->verify_mode
= SSL_VERIFY_NONE
;
2644 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2647 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2648 if (ret
->sessions
== NULL
)
2650 ret
->cert_store
= X509_STORE_new();
2651 if (ret
->cert_store
== NULL
)
2653 #ifndef OPENSSL_NO_CT
2654 ret
->ctlog_store
= CTLOG_STORE_new();
2655 if (ret
->ctlog_store
== NULL
)
2658 if (!ssl_create_cipher_list(ret
->method
,
2659 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2660 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2661 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2662 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2666 ret
->param
= X509_VERIFY_PARAM_new();
2667 if (ret
->param
== NULL
)
2670 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2671 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2674 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2675 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2679 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2682 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2685 /* No compression for DTLS */
2686 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2687 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2689 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2690 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2692 /* Setup RFC5077 ticket keys */
2693 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2694 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2695 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2696 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2697 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2698 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2699 ret
->options
|= SSL_OP_NO_TICKET
;
2701 #ifndef OPENSSL_NO_SRP
2702 if (!SSL_CTX_SRP_CTX_init(ret
))
2705 #ifndef OPENSSL_NO_ENGINE
2706 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2707 # define eng_strx(x) #x
2708 # define eng_str(x) eng_strx(x)
2709 /* Use specific client engine automatically... ignore errors */
2712 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2715 ENGINE_load_builtin_engines();
2716 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2718 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2724 * Default is to connect to non-RI servers. When RI is more widely
2725 * deployed might change this.
2727 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2729 * Disable compression by default to prevent CRIME. Applications can
2730 * re-enable compression by configuring
2731 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2732 * or by using the SSL_CONF library.
2734 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2736 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2739 * Default max early data is a fully loaded single record. Could be split
2740 * across multiple records in practice
2742 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2746 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2752 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2756 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2759 REF_PRINT_COUNT("SSL_CTX", ctx
);
2760 REF_ASSERT_ISNT(i
< 2);
2761 return ((i
> 1) ? 1 : 0);
2764 void SSL_CTX_free(SSL_CTX
*a
)
2771 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2772 REF_PRINT_COUNT("SSL_CTX", a
);
2775 REF_ASSERT_ISNT(i
< 0);
2777 X509_VERIFY_PARAM_free(a
->param
);
2778 dane_ctx_final(&a
->dane
);
2781 * Free internal session cache. However: the remove_cb() may reference
2782 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2783 * after the sessions were flushed.
2784 * As the ex_data handling routines might also touch the session cache,
2785 * the most secure solution seems to be: empty (flush) the cache, then
2786 * free ex_data, then finally free the cache.
2787 * (See ticket [openssl.org #212].)
2789 if (a
->sessions
!= NULL
)
2790 SSL_CTX_flush_sessions(a
, 0);
2792 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2793 lh_SSL_SESSION_free(a
->sessions
);
2794 X509_STORE_free(a
->cert_store
);
2795 #ifndef OPENSSL_NO_CT
2796 CTLOG_STORE_free(a
->ctlog_store
);
2798 sk_SSL_CIPHER_free(a
->cipher_list
);
2799 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2800 ssl_cert_free(a
->cert
);
2801 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2802 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2803 a
->comp_methods
= NULL
;
2804 #ifndef OPENSSL_NO_SRTP
2805 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2807 #ifndef OPENSSL_NO_SRP
2808 SSL_CTX_SRP_CTX_free(a
);
2810 #ifndef OPENSSL_NO_ENGINE
2811 ENGINE_finish(a
->client_cert_engine
);
2814 #ifndef OPENSSL_NO_EC
2815 OPENSSL_free(a
->ext
.ecpointformats
);
2816 OPENSSL_free(a
->ext
.supportedgroups
);
2818 OPENSSL_free(a
->ext
.alpn
);
2820 CRYPTO_THREAD_lock_free(a
->lock
);
2825 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2827 ctx
->default_passwd_callback
= cb
;
2830 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2832 ctx
->default_passwd_callback_userdata
= u
;
2835 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2837 return ctx
->default_passwd_callback
;
2840 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2842 return ctx
->default_passwd_callback_userdata
;
2845 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2847 s
->default_passwd_callback
= cb
;
2850 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2852 s
->default_passwd_callback_userdata
= u
;
2855 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2857 return s
->default_passwd_callback
;
2860 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2862 return s
->default_passwd_callback_userdata
;
2865 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2866 int (*cb
) (X509_STORE_CTX
*, void *),
2869 ctx
->app_verify_callback
= cb
;
2870 ctx
->app_verify_arg
= arg
;
2873 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
2874 int (*cb
) (int, X509_STORE_CTX
*))
2876 ctx
->verify_mode
= mode
;
2877 ctx
->default_verify_callback
= cb
;
2880 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
2882 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
2885 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2887 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
2890 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2892 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
2895 void ssl_set_masks(SSL
*s
)
2898 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
2899 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
2900 unsigned long mask_k
, mask_a
;
2901 #ifndef OPENSSL_NO_EC
2902 int have_ecc_cert
, ecdsa_ok
;
2907 #ifndef OPENSSL_NO_DH
2908 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
2913 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2914 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2915 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
2916 #ifndef OPENSSL_NO_EC
2917 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
2923 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
2924 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
2927 #ifndef OPENSSL_NO_GOST
2928 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
2929 mask_k
|= SSL_kGOST
;
2930 mask_a
|= SSL_aGOST12
;
2932 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
2933 mask_k
|= SSL_kGOST
;
2934 mask_a
|= SSL_aGOST12
;
2936 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
2937 mask_k
|= SSL_kGOST
;
2938 mask_a
|= SSL_aGOST01
;
2948 if (rsa_enc
|| rsa_sign
) {
2956 mask_a
|= SSL_aNULL
;
2959 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2960 * depending on the key usage extension.
2962 #ifndef OPENSSL_NO_EC
2963 if (have_ecc_cert
) {
2965 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
2966 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
2967 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
2970 mask_a
|= SSL_aECDSA
;
2972 /* Allow Ed25519 for TLS 1.2 if peer supports it */
2973 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
2974 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
2975 && TLS1_get_version(s
) == TLS1_2_VERSION
)
2976 mask_a
|= SSL_aECDSA
;
2979 #ifndef OPENSSL_NO_EC
2980 mask_k
|= SSL_kECDHE
;
2983 #ifndef OPENSSL_NO_PSK
2986 if (mask_k
& SSL_kRSA
)
2987 mask_k
|= SSL_kRSAPSK
;
2988 if (mask_k
& SSL_kDHE
)
2989 mask_k
|= SSL_kDHEPSK
;
2990 if (mask_k
& SSL_kECDHE
)
2991 mask_k
|= SSL_kECDHEPSK
;
2994 s
->s3
->tmp
.mask_k
= mask_k
;
2995 s
->s3
->tmp
.mask_a
= mask_a
;
2998 #ifndef OPENSSL_NO_EC
3000 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3002 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3003 /* key usage, if present, must allow signing */
3004 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3005 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3006 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3010 return 1; /* all checks are ok */
3015 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3016 size_t *serverinfo_length
)
3018 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3019 *serverinfo_length
= 0;
3021 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3024 *serverinfo
= cpk
->serverinfo
;
3025 *serverinfo_length
= cpk
->serverinfo_length
;
3029 void ssl_update_cache(SSL
*s
, int mode
)
3034 * If the session_id_length is 0, we are not supposed to cache it, and it
3035 * would be rather hard to do anyway :-)
3037 if (s
->session
->session_id_length
== 0)
3040 i
= s
->session_ctx
->session_cache_mode
;
3041 if ((i
& mode
) && (!s
->hit
)
3042 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
)
3043 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3044 && (s
->session_ctx
->new_session_cb
!= NULL
)) {
3045 SSL_SESSION_up_ref(s
->session
);
3046 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3047 SSL_SESSION_free(s
->session
);
3050 /* auto flush every 255 connections */
3051 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3052 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3053 ? s
->session_ctx
->stats
.sess_connect_good
3054 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3055 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3060 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3065 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3070 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3074 if (s
->method
!= meth
) {
3075 const SSL_METHOD
*sm
= s
->method
;
3076 int (*hf
) (SSL
*) = s
->handshake_func
;
3078 if (sm
->version
== meth
->version
)
3083 ret
= s
->method
->ssl_new(s
);
3086 if (hf
== sm
->ssl_connect
)
3087 s
->handshake_func
= meth
->ssl_connect
;
3088 else if (hf
== sm
->ssl_accept
)
3089 s
->handshake_func
= meth
->ssl_accept
;
3094 int SSL_get_error(const SSL
*s
, int i
)
3101 return (SSL_ERROR_NONE
);
3104 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3105 * where we do encode the error
3107 if ((l
= ERR_peek_error()) != 0) {
3108 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3109 return (SSL_ERROR_SYSCALL
);
3111 return (SSL_ERROR_SSL
);
3114 if (SSL_want_read(s
)) {
3115 bio
= SSL_get_rbio(s
);
3116 if (BIO_should_read(bio
))
3117 return (SSL_ERROR_WANT_READ
);
3118 else if (BIO_should_write(bio
))
3120 * This one doesn't make too much sense ... We never try to write
3121 * to the rbio, and an application program where rbio and wbio
3122 * are separate couldn't even know what it should wait for.
3123 * However if we ever set s->rwstate incorrectly (so that we have
3124 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3125 * wbio *are* the same, this test works around that bug; so it
3126 * might be safer to keep it.
3128 return (SSL_ERROR_WANT_WRITE
);
3129 else if (BIO_should_io_special(bio
)) {
3130 reason
= BIO_get_retry_reason(bio
);
3131 if (reason
== BIO_RR_CONNECT
)
3132 return (SSL_ERROR_WANT_CONNECT
);
3133 else if (reason
== BIO_RR_ACCEPT
)
3134 return (SSL_ERROR_WANT_ACCEPT
);
3136 return (SSL_ERROR_SYSCALL
); /* unknown */
3140 if (SSL_want_write(s
)) {
3141 /* Access wbio directly - in order to use the buffered bio if present */
3143 if (BIO_should_write(bio
))
3144 return (SSL_ERROR_WANT_WRITE
);
3145 else if (BIO_should_read(bio
))
3147 * See above (SSL_want_read(s) with BIO_should_write(bio))
3149 return (SSL_ERROR_WANT_READ
);
3150 else if (BIO_should_io_special(bio
)) {
3151 reason
= BIO_get_retry_reason(bio
);
3152 if (reason
== BIO_RR_CONNECT
)
3153 return (SSL_ERROR_WANT_CONNECT
);
3154 else if (reason
== BIO_RR_ACCEPT
)
3155 return (SSL_ERROR_WANT_ACCEPT
);
3157 return (SSL_ERROR_SYSCALL
);
3160 if (SSL_want_x509_lookup(s
))
3161 return (SSL_ERROR_WANT_X509_LOOKUP
);
3162 if (SSL_want_async(s
))
3163 return SSL_ERROR_WANT_ASYNC
;
3164 if (SSL_want_async_job(s
))
3165 return SSL_ERROR_WANT_ASYNC_JOB
;
3166 if (SSL_want_early(s
))
3167 return SSL_ERROR_WANT_EARLY
;
3169 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3170 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3171 return (SSL_ERROR_ZERO_RETURN
);
3173 return (SSL_ERROR_SYSCALL
);
3176 static int ssl_do_handshake_intern(void *vargs
)
3178 struct ssl_async_args
*args
;
3181 args
= (struct ssl_async_args
*)vargs
;
3184 return s
->handshake_func(s
);
3187 int SSL_do_handshake(SSL
*s
)
3191 if (s
->handshake_func
== NULL
) {
3192 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3196 ossl_statem_check_finish_init(s
, -1);
3198 s
->method
->ssl_renegotiate_check(s
, 0);
3200 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3201 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3202 struct ssl_async_args args
;
3206 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3208 ret
= s
->handshake_func(s
);
3214 void SSL_set_accept_state(SSL
*s
)
3218 ossl_statem_clear(s
);
3219 s
->handshake_func
= s
->method
->ssl_accept
;
3223 void SSL_set_connect_state(SSL
*s
)
3227 ossl_statem_clear(s
);
3228 s
->handshake_func
= s
->method
->ssl_connect
;
3232 int ssl_undefined_function(SSL
*s
)
3234 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3238 int ssl_undefined_void_function(void)
3240 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3241 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3245 int ssl_undefined_const_function(const SSL
*s
)
3250 const SSL_METHOD
*ssl_bad_method(int ver
)
3252 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3256 const char *ssl_protocol_to_string(int version
)
3260 case TLS1_3_VERSION
:
3263 case TLS1_2_VERSION
:
3266 case TLS1_1_VERSION
:
3281 case DTLS1_2_VERSION
:
3289 const char *SSL_get_version(const SSL
*s
)
3291 return ssl_protocol_to_string(s
->version
);
3294 SSL
*SSL_dup(SSL
*s
)
3296 STACK_OF(X509_NAME
) *sk
;
3301 /* If we're not quiescent, just up_ref! */
3302 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3303 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3308 * Otherwise, copy configuration state, and session if set.
3310 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3313 if (s
->session
!= NULL
) {
3315 * Arranges to share the same session via up_ref. This "copies"
3316 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3318 if (!SSL_copy_session_id(ret
, s
))
3322 * No session has been established yet, so we have to expect that
3323 * s->cert or ret->cert will be changed later -- they should not both
3324 * point to the same object, and thus we can't use
3325 * SSL_copy_session_id.
3327 if (!SSL_set_ssl_method(ret
, s
->method
))
3330 if (s
->cert
!= NULL
) {
3331 ssl_cert_free(ret
->cert
);
3332 ret
->cert
= ssl_cert_dup(s
->cert
);
3333 if (ret
->cert
== NULL
)
3337 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3338 (int)s
->sid_ctx_length
))
3342 if (!ssl_dane_dup(ret
, s
))
3344 ret
->version
= s
->version
;
3345 ret
->options
= s
->options
;
3346 ret
->mode
= s
->mode
;
3347 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3348 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3349 ret
->msg_callback
= s
->msg_callback
;
3350 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3351 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3352 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3353 ret
->generate_session_id
= s
->generate_session_id
;
3355 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3357 /* copy app data, a little dangerous perhaps */
3358 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3361 /* setup rbio, and wbio */
3362 if (s
->rbio
!= NULL
) {
3363 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3366 if (s
->wbio
!= NULL
) {
3367 if (s
->wbio
!= s
->rbio
) {
3368 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3371 BIO_up_ref(ret
->rbio
);
3372 ret
->wbio
= ret
->rbio
;
3376 ret
->server
= s
->server
;
3377 if (s
->handshake_func
) {
3379 SSL_set_accept_state(ret
);
3381 SSL_set_connect_state(ret
);
3383 ret
->shutdown
= s
->shutdown
;
3386 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3387 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3389 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3391 /* dup the cipher_list and cipher_list_by_id stacks */
3392 if (s
->cipher_list
!= NULL
) {
3393 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3396 if (s
->cipher_list_by_id
!= NULL
)
3397 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3401 /* Dup the client_CA list */
3402 if (s
->ca_names
!= NULL
) {
3403 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3406 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3407 xn
= sk_X509_NAME_value(sk
, i
);
3408 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3421 void ssl_clear_cipher_ctx(SSL
*s
)
3423 if (s
->enc_read_ctx
!= NULL
) {
3424 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3425 s
->enc_read_ctx
= NULL
;
3427 if (s
->enc_write_ctx
!= NULL
) {
3428 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3429 s
->enc_write_ctx
= NULL
;
3431 #ifndef OPENSSL_NO_COMP
3432 COMP_CTX_free(s
->expand
);
3434 COMP_CTX_free(s
->compress
);
3439 X509
*SSL_get_certificate(const SSL
*s
)
3441 if (s
->cert
!= NULL
)
3442 return (s
->cert
->key
->x509
);
3447 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3449 if (s
->cert
!= NULL
)
3450 return (s
->cert
->key
->privatekey
);
3455 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3457 if (ctx
->cert
!= NULL
)
3458 return ctx
->cert
->key
->x509
;
3463 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3465 if (ctx
->cert
!= NULL
)
3466 return ctx
->cert
->key
->privatekey
;
3471 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3473 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3474 return (s
->session
->cipher
);
3478 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3480 #ifndef OPENSSL_NO_COMP
3481 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3487 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3489 #ifndef OPENSSL_NO_COMP
3490 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3496 int ssl_init_wbio_buffer(SSL
*s
)
3500 if (s
->bbio
!= NULL
) {
3501 /* Already buffered. */
3505 bbio
= BIO_new(BIO_f_buffer());
3506 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3508 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3512 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3517 int ssl_free_wbio_buffer(SSL
*s
)
3519 /* callers ensure s is never null */
3520 if (s
->bbio
== NULL
)
3523 s
->wbio
= BIO_pop(s
->wbio
);
3524 if (!ossl_assert(s
->wbio
!= NULL
))
3532 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3534 ctx
->quiet_shutdown
= mode
;
3537 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3539 return (ctx
->quiet_shutdown
);
3542 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3544 s
->quiet_shutdown
= mode
;
3547 int SSL_get_quiet_shutdown(const SSL
*s
)
3549 return (s
->quiet_shutdown
);
3552 void SSL_set_shutdown(SSL
*s
, int mode
)
3557 int SSL_get_shutdown(const SSL
*s
)
3562 int SSL_version(const SSL
*s
)
3567 int SSL_client_version(const SSL
*s
)
3569 return s
->client_version
;
3572 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3577 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3580 if (ssl
->ctx
== ctx
)
3583 ctx
= ssl
->session_ctx
;
3584 new_cert
= ssl_cert_dup(ctx
->cert
);
3585 if (new_cert
== NULL
) {
3589 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3590 ssl_cert_free(new_cert
);
3594 ssl_cert_free(ssl
->cert
);
3595 ssl
->cert
= new_cert
;
3598 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3599 * so setter APIs must prevent invalid lengths from entering the system.
3601 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3605 * If the session ID context matches that of the parent SSL_CTX,
3606 * inherit it from the new SSL_CTX as well. If however the context does
3607 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3608 * leave it unchanged.
3610 if ((ssl
->ctx
!= NULL
) &&
3611 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3612 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3613 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3614 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3617 SSL_CTX_up_ref(ctx
);
3618 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3624 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3626 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3629 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3631 X509_LOOKUP
*lookup
;
3633 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3636 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3638 /* Clear any errors if the default directory does not exist */
3644 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3646 X509_LOOKUP
*lookup
;
3648 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3652 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3654 /* Clear any errors if the default file does not exist */
3660 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3663 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3666 void SSL_set_info_callback(SSL
*ssl
,
3667 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3669 ssl
->info_callback
= cb
;
3673 * One compiler (Diab DCC) doesn't like argument names in returned function
3676 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3679 return ssl
->info_callback
;
3682 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3684 ssl
->verify_result
= arg
;
3687 long SSL_get_verify_result(const SSL
*ssl
)
3689 return (ssl
->verify_result
);
3692 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3695 return sizeof(ssl
->s3
->client_random
);
3696 if (outlen
> sizeof(ssl
->s3
->client_random
))
3697 outlen
= sizeof(ssl
->s3
->client_random
);
3698 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3702 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3705 return sizeof(ssl
->s3
->server_random
);
3706 if (outlen
> sizeof(ssl
->s3
->server_random
))
3707 outlen
= sizeof(ssl
->s3
->server_random
);
3708 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3712 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3713 unsigned char *out
, size_t outlen
)
3716 return session
->master_key_length
;
3717 if (outlen
> session
->master_key_length
)
3718 outlen
= session
->master_key_length
;
3719 memcpy(out
, session
->master_key
, outlen
);
3723 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3725 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3728 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3730 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3733 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3735 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3738 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3740 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3743 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3745 return (ctx
->cert_store
);
3748 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3750 X509_STORE_free(ctx
->cert_store
);
3751 ctx
->cert_store
= store
;
3754 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3757 X509_STORE_up_ref(store
);
3758 SSL_CTX_set_cert_store(ctx
, store
);
3761 int SSL_want(const SSL
*s
)
3763 return (s
->rwstate
);
3767 * \brief Set the callback for generating temporary DH keys.
3768 * \param ctx the SSL context.
3769 * \param dh the callback
3772 #ifndef OPENSSL_NO_DH
3773 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3774 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3777 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3780 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3783 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3787 #ifndef OPENSSL_NO_PSK
3788 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3790 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3791 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3794 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3795 if (identity_hint
!= NULL
) {
3796 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3797 if (ctx
->cert
->psk_identity_hint
== NULL
)
3800 ctx
->cert
->psk_identity_hint
= NULL
;
3804 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3809 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3810 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3813 OPENSSL_free(s
->cert
->psk_identity_hint
);
3814 if (identity_hint
!= NULL
) {
3815 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3816 if (s
->cert
->psk_identity_hint
== NULL
)
3819 s
->cert
->psk_identity_hint
= NULL
;
3823 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3825 if (s
== NULL
|| s
->session
== NULL
)
3827 return (s
->session
->psk_identity_hint
);
3830 const char *SSL_get_psk_identity(const SSL
*s
)
3832 if (s
== NULL
|| s
->session
== NULL
)
3834 return (s
->session
->psk_identity
);
3837 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
3839 s
->psk_client_callback
= cb
;
3842 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
3844 ctx
->psk_client_callback
= cb
;
3847 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
3849 s
->psk_server_callback
= cb
;
3852 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
3854 ctx
->psk_server_callback
= cb
;
3858 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
3859 void (*cb
) (int write_p
, int version
,
3860 int content_type
, const void *buf
,
3861 size_t len
, SSL
*ssl
, void *arg
))
3863 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3866 void SSL_set_msg_callback(SSL
*ssl
,
3867 void (*cb
) (int write_p
, int version
,
3868 int content_type
, const void *buf
,
3869 size_t len
, SSL
*ssl
, void *arg
))
3871 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3874 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
3875 int (*cb
) (SSL
*ssl
,
3879 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3880 (void (*)(void))cb
);
3883 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
3884 int (*cb
) (SSL
*ssl
,
3885 int is_forward_secure
))
3887 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3888 (void (*)(void))cb
);
3891 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
3892 size_t (*cb
) (SSL
*ssl
, int type
,
3893 size_t len
, void *arg
))
3895 ctx
->record_padding_cb
= cb
;
3898 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
3900 ctx
->record_padding_arg
= arg
;
3903 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
3905 return ctx
->record_padding_arg
;
3908 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
3910 /* block size of 0 or 1 is basically no padding */
3911 if (block_size
== 1)
3912 ctx
->block_padding
= 0;
3913 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
3914 ctx
->block_padding
= block_size
;
3920 void SSL_set_record_padding_callback(SSL
*ssl
,
3921 size_t (*cb
) (SSL
*ssl
, int type
,
3922 size_t len
, void *arg
))
3924 ssl
->record_padding_cb
= cb
;
3927 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
3929 ssl
->record_padding_arg
= arg
;
3932 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
3934 return ssl
->record_padding_arg
;
3937 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
3939 /* block size of 0 or 1 is basically no padding */
3940 if (block_size
== 1)
3941 ssl
->block_padding
= 0;
3942 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
3943 ssl
->block_padding
= block_size
;
3950 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3951 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3952 * If EVP_MD pointer is passed, initializes ctx with this |md|.
3953 * Returns the newly allocated ctx;
3956 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
3958 ssl_clear_hash_ctx(hash
);
3959 *hash
= EVP_MD_CTX_new();
3960 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
3961 EVP_MD_CTX_free(*hash
);
3968 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
3971 EVP_MD_CTX_free(*hash
);
3975 /* Retrieve handshake hashes */
3976 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
3979 EVP_MD_CTX
*ctx
= NULL
;
3980 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
3981 int hashleni
= EVP_MD_CTX_size(hdgst
);
3984 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
3987 ctx
= EVP_MD_CTX_new();
3991 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
3992 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
3995 *hashlen
= hashleni
;
3999 EVP_MD_CTX_free(ctx
);
4003 int SSL_session_reused(SSL
*s
)
4008 int SSL_is_server(const SSL
*s
)
4013 #if OPENSSL_API_COMPAT < 0x10100000L
4014 void SSL_set_debug(SSL
*s
, int debug
)
4016 /* Old function was do-nothing anyway... */
4022 void SSL_set_security_level(SSL
*s
, int level
)
4024 s
->cert
->sec_level
= level
;
4027 int SSL_get_security_level(const SSL
*s
)
4029 return s
->cert
->sec_level
;
4032 void SSL_set_security_callback(SSL
*s
,
4033 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4034 int op
, int bits
, int nid
,
4035 void *other
, void *ex
))
4037 s
->cert
->sec_cb
= cb
;
4040 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4041 const SSL_CTX
*ctx
, int op
,
4042 int bits
, int nid
, void *other
,
4044 return s
->cert
->sec_cb
;
4047 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4049 s
->cert
->sec_ex
= ex
;
4052 void *SSL_get0_security_ex_data(const SSL
*s
)
4054 return s
->cert
->sec_ex
;
4057 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4059 ctx
->cert
->sec_level
= level
;
4062 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4064 return ctx
->cert
->sec_level
;
4067 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4068 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4069 int op
, int bits
, int nid
,
4070 void *other
, void *ex
))
4072 ctx
->cert
->sec_cb
= cb
;
4075 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4081 return ctx
->cert
->sec_cb
;
4084 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4086 ctx
->cert
->sec_ex
= ex
;
4089 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4091 return ctx
->cert
->sec_ex
;
4095 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4096 * can return unsigned long, instead of the generic long return value from the
4097 * control interface.
4099 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4101 return ctx
->options
;
4104 unsigned long SSL_get_options(const SSL
*s
)
4109 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4111 return ctx
->options
|= op
;
4114 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4116 return s
->options
|= op
;
4119 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4121 return ctx
->options
&= ~op
;
4124 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4126 return s
->options
&= ~op
;
4129 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4131 return s
->verified_chain
;
4134 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4136 #ifndef OPENSSL_NO_CT
4139 * Moves SCTs from the |src| stack to the |dst| stack.
4140 * The source of each SCT will be set to |origin|.
4141 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4143 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4145 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4146 sct_source_t origin
)
4152 *dst
= sk_SCT_new_null();
4154 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4159 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4160 if (SCT_set_source(sct
, origin
) != 1)
4163 if (sk_SCT_push(*dst
, sct
) <= 0)
4171 sk_SCT_push(src
, sct
); /* Put the SCT back */
4176 * Look for data collected during ServerHello and parse if found.
4177 * Returns the number of SCTs extracted.
4179 static int ct_extract_tls_extension_scts(SSL
*s
)
4181 int scts_extracted
= 0;
4183 if (s
->ext
.scts
!= NULL
) {
4184 const unsigned char *p
= s
->ext
.scts
;
4185 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4187 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4189 SCT_LIST_free(scts
);
4192 return scts_extracted
;
4196 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4197 * contains an SCT X509 extension. They will be stored in |s->scts|.
4199 * - The number of SCTs extracted, assuming an OCSP response exists.
4200 * - 0 if no OCSP response exists or it contains no SCTs.
4201 * - A negative integer if an error occurs.
4203 static int ct_extract_ocsp_response_scts(SSL
*s
)
4205 # ifndef OPENSSL_NO_OCSP
4206 int scts_extracted
= 0;
4207 const unsigned char *p
;
4208 OCSP_BASICRESP
*br
= NULL
;
4209 OCSP_RESPONSE
*rsp
= NULL
;
4210 STACK_OF(SCT
) *scts
= NULL
;
4213 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4216 p
= s
->ext
.ocsp
.resp
;
4217 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4221 br
= OCSP_response_get1_basic(rsp
);
4225 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4226 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4232 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4234 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4235 if (scts_extracted
< 0)
4239 SCT_LIST_free(scts
);
4240 OCSP_BASICRESP_free(br
);
4241 OCSP_RESPONSE_free(rsp
);
4242 return scts_extracted
;
4244 /* Behave as if no OCSP response exists */
4250 * Attempts to extract SCTs from the peer certificate.
4251 * Return the number of SCTs extracted, or a negative integer if an error
4254 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4256 int scts_extracted
= 0;
4257 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4260 STACK_OF(SCT
) *scts
=
4261 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4264 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4266 SCT_LIST_free(scts
);
4269 return scts_extracted
;
4273 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4274 * response (if it exists) and X509v3 extensions in the certificate.
4275 * Returns NULL if an error occurs.
4277 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4279 if (!s
->scts_parsed
) {
4280 if (ct_extract_tls_extension_scts(s
) < 0 ||
4281 ct_extract_ocsp_response_scts(s
) < 0 ||
4282 ct_extract_x509v3_extension_scts(s
) < 0)
4292 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4293 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4298 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4299 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4301 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4304 for (i
= 0; i
< count
; ++i
) {
4305 SCT
*sct
= sk_SCT_value(scts
, i
);
4306 int status
= SCT_get_validation_status(sct
);
4308 if (status
== SCT_VALIDATION_STATUS_VALID
)
4311 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4315 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4319 * Since code exists that uses the custom extension handler for CT, look
4320 * for this and throw an error if they have already registered to use CT.
4322 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4323 TLSEXT_TYPE_signed_certificate_timestamp
))
4325 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4326 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4330 if (callback
!= NULL
) {
4332 * If we are validating CT, then we MUST accept SCTs served via OCSP
4334 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4338 s
->ct_validation_callback
= callback
;
4339 s
->ct_validation_callback_arg
= arg
;
4344 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4345 ssl_ct_validation_cb callback
, void *arg
)
4348 * Since code exists that uses the custom extension handler for CT, look for
4349 * this and throw an error if they have already registered to use CT.
4351 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4352 TLSEXT_TYPE_signed_certificate_timestamp
))
4354 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4355 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4359 ctx
->ct_validation_callback
= callback
;
4360 ctx
->ct_validation_callback_arg
= arg
;
4364 int SSL_ct_is_enabled(const SSL
*s
)
4366 return s
->ct_validation_callback
!= NULL
;
4369 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4371 return ctx
->ct_validation_callback
!= NULL
;
4374 int ssl_validate_ct(SSL
*s
)
4377 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4379 SSL_DANE
*dane
= &s
->dane
;
4380 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4381 const STACK_OF(SCT
) *scts
;
4384 * If no callback is set, the peer is anonymous, or its chain is invalid,
4385 * skip SCT validation - just return success. Applications that continue
4386 * handshakes without certificates, with unverified chains, or pinned leaf
4387 * certificates are outside the scope of the WebPKI and CT.
4389 * The above exclusions notwithstanding the vast majority of peers will
4390 * have rather ordinary certificate chains validated by typical
4391 * applications that perform certificate verification and therefore will
4392 * process SCTs when enabled.
4394 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4395 s
->verify_result
!= X509_V_OK
||
4396 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4400 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4401 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4403 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4404 switch (dane
->mtlsa
->usage
) {
4405 case DANETLS_USAGE_DANE_TA
:
4406 case DANETLS_USAGE_DANE_EE
:
4411 ctx
= CT_POLICY_EVAL_CTX_new();
4413 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4417 issuer
= sk_X509_value(s
->verified_chain
, 1);
4418 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4419 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4420 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4421 CT_POLICY_EVAL_CTX_set_time(
4422 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4424 scts
= SSL_get0_peer_scts(s
);
4427 * This function returns success (> 0) only when all the SCTs are valid, 0
4428 * when some are invalid, and < 0 on various internal errors (out of
4429 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4430 * reason to abort the handshake, that decision is up to the callback.
4431 * Therefore, we error out only in the unexpected case that the return
4432 * value is negative.
4434 * XXX: One might well argue that the return value of this function is an
4435 * unfortunate design choice. Its job is only to determine the validation
4436 * status of each of the provided SCTs. So long as it correctly separates
4437 * the wheat from the chaff it should return success. Failure in this case
4438 * ought to correspond to an inability to carry out its duties.
4440 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4441 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4445 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4447 ret
= 0; /* This function returns 0 on failure */
4450 CT_POLICY_EVAL_CTX_free(ctx
);
4452 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4453 * failure return code here. Also the application may wish the complete
4454 * the handshake, and then disconnect cleanly at a higher layer, after
4455 * checking the verification status of the completed connection.
4457 * We therefore force a certificate verification failure which will be
4458 * visible via SSL_get_verify_result() and cached as part of any resumed
4461 * Note: the permissive callback is for information gathering only, always
4462 * returns success, and does not affect verification status. Only the
4463 * strict callback or a custom application-specified callback can trigger
4464 * connection failure or record a verification error.
4467 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4471 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4473 switch (validation_mode
) {
4475 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4477 case SSL_CT_VALIDATION_PERMISSIVE
:
4478 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4479 case SSL_CT_VALIDATION_STRICT
:
4480 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4484 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4486 switch (validation_mode
) {
4488 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4490 case SSL_CT_VALIDATION_PERMISSIVE
:
4491 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4492 case SSL_CT_VALIDATION_STRICT
:
4493 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4497 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4499 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4502 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4504 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4507 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4509 CTLOG_STORE_free(ctx
->ctlog_store
);
4510 ctx
->ctlog_store
= logs
;
4513 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4515 return ctx
->ctlog_store
;
4518 #endif /* OPENSSL_NO_CT */
4520 void SSL_CTX_set_early_cb(SSL_CTX
*c
, SSL_early_cb_fn cb
, void *arg
)
4523 c
->early_cb_arg
= arg
;
4526 int SSL_early_isv2(SSL
*s
)
4528 if (s
->clienthello
== NULL
)
4530 return s
->clienthello
->isv2
;
4533 unsigned int SSL_early_get0_legacy_version(SSL
*s
)
4535 if (s
->clienthello
== NULL
)
4537 return s
->clienthello
->legacy_version
;
4540 size_t SSL_early_get0_random(SSL
*s
, const unsigned char **out
)
4542 if (s
->clienthello
== NULL
)
4545 *out
= s
->clienthello
->random
;
4546 return SSL3_RANDOM_SIZE
;
4549 size_t SSL_early_get0_session_id(SSL
*s
, const unsigned char **out
)
4551 if (s
->clienthello
== NULL
)
4554 *out
= s
->clienthello
->session_id
;
4555 return s
->clienthello
->session_id_len
;
4558 size_t SSL_early_get0_ciphers(SSL
*s
, const unsigned char **out
)
4560 if (s
->clienthello
== NULL
)
4563 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4564 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4567 size_t SSL_early_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4569 if (s
->clienthello
== NULL
)
4572 *out
= s
->clienthello
->compressions
;
4573 return s
->clienthello
->compressions_len
;
4576 int SSL_early_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4582 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4584 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4585 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4589 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4590 if (present
== NULL
)
4592 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4593 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4595 if (ext
->received_order
>= num
)
4597 present
[ext
->received_order
] = ext
->type
;
4604 OPENSSL_free(present
);
4608 int SSL_early_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4614 if (s
->clienthello
== NULL
)
4616 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4617 r
= s
->clienthello
->pre_proc_exts
+ i
;
4618 if (r
->present
&& r
->type
== type
) {
4620 *out
= PACKET_data(&r
->data
);
4622 *outlen
= PACKET_remaining(&r
->data
);
4629 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4631 ctx
->keylog_callback
= cb
;
4634 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4636 return ctx
->keylog_callback
;
4639 static int nss_keylog_int(const char *prefix
,
4641 const uint8_t *parameter_1
,
4642 size_t parameter_1_len
,
4643 const uint8_t *parameter_2
,
4644 size_t parameter_2_len
)
4647 char *cursor
= NULL
;
4652 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4655 * Our output buffer will contain the following strings, rendered with
4656 * space characters in between, terminated by a NULL character: first the
4657 * prefix, then the first parameter, then the second parameter. The
4658 * meaning of each parameter depends on the specific key material being
4659 * logged. Note that the first and second parameters are encoded in
4660 * hexadecimal, so we need a buffer that is twice their lengths.
4662 prefix_len
= strlen(prefix
);
4663 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4664 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4665 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4669 strcpy(cursor
, prefix
);
4670 cursor
+= prefix_len
;
4673 for (i
= 0; i
< parameter_1_len
; i
++) {
4674 sprintf(cursor
, "%02x", parameter_1
[i
]);
4679 for (i
= 0; i
< parameter_2_len
; i
++) {
4680 sprintf(cursor
, "%02x", parameter_2
[i
]);
4685 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4691 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4692 const uint8_t *encrypted_premaster
,
4693 size_t encrypted_premaster_len
,
4694 const uint8_t *premaster
,
4695 size_t premaster_len
)
4697 if (encrypted_premaster_len
< 8) {
4698 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4702 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4703 return nss_keylog_int("RSA",
4705 encrypted_premaster
,
4711 int ssl_log_secret(SSL
*ssl
,
4713 const uint8_t *secret
,
4716 return nss_keylog_int(label
,
4718 ssl
->s3
->client_random
,
4724 #define SSLV2_CIPHER_LEN 3
4726 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4731 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4733 if (PACKET_remaining(cipher_suites
) == 0) {
4734 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4735 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4739 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4740 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4741 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4742 *al
= SSL_AD_DECODE_ERROR
;
4746 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4747 s
->s3
->tmp
.ciphers_raw
= NULL
;
4748 s
->s3
->tmp
.ciphers_rawlen
= 0;
4751 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4752 PACKET sslv2ciphers
= *cipher_suites
;
4753 unsigned int leadbyte
;
4757 * We store the raw ciphers list in SSLv3+ format so we need to do some
4758 * preprocessing to convert the list first. If there are any SSLv2 only
4759 * ciphersuites with a non-zero leading byte then we are going to
4760 * slightly over allocate because we won't store those. But that isn't a
4763 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4764 s
->s3
->tmp
.ciphers_raw
= raw
;
4766 *al
= SSL_AD_INTERNAL_ERROR
;
4769 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4770 PACKET_remaining(&sslv2ciphers
) > 0;
4771 raw
+= TLS_CIPHER_LEN
) {
4772 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4774 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4777 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4778 *al
= SSL_AD_DECODE_ERROR
;
4779 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4780 s
->s3
->tmp
.ciphers_raw
= NULL
;
4781 s
->s3
->tmp
.ciphers_rawlen
= 0;
4785 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4787 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4788 &s
->s3
->tmp
.ciphers_rawlen
)) {
4789 *al
= SSL_AD_INTERNAL_ERROR
;
4797 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
4798 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
4799 STACK_OF(SSL_CIPHER
) **scsvs
)
4804 if (!PACKET_buf_init(&pkt
, bytes
, len
))
4806 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
4809 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
4810 STACK_OF(SSL_CIPHER
) **skp
,
4811 STACK_OF(SSL_CIPHER
) **scsvs_out
,
4812 int sslv2format
, int *al
)
4814 const SSL_CIPHER
*c
;
4815 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
4816 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
4818 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4819 unsigned char cipher
[SSLV2_CIPHER_LEN
];
4821 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4823 if (PACKET_remaining(cipher_suites
) == 0) {
4824 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4825 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4829 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4830 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
4831 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4832 *al
= SSL_AD_DECODE_ERROR
;
4836 sk
= sk_SSL_CIPHER_new_null();
4837 scsvs
= sk_SSL_CIPHER_new_null();
4838 if (sk
== NULL
|| scsvs
== NULL
) {
4839 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4840 *al
= SSL_AD_INTERNAL_ERROR
;
4844 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
4846 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
4847 * first byte set to zero, while true SSLv2 ciphers have a non-zero
4848 * first byte. We don't support any true SSLv2 ciphers, so skip them.
4850 if (sslv2format
&& cipher
[0] != '\0')
4853 /* For SSLv2-compat, ignore leading 0-byte. */
4854 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
4856 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
4857 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
4858 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4859 *al
= SSL_AD_INTERNAL_ERROR
;
4864 if (PACKET_remaining(cipher_suites
) > 0) {
4865 *al
= SSL_AD_DECODE_ERROR
;
4866 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
4873 sk_SSL_CIPHER_free(sk
);
4874 if (scsvs_out
!= NULL
)
4877 sk_SSL_CIPHER_free(scsvs
);
4880 sk_SSL_CIPHER_free(sk
);
4881 sk_SSL_CIPHER_free(scsvs
);
4885 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
4887 ctx
->max_early_data
= max_early_data
;
4892 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
4894 return ctx
->max_early_data
;
4897 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
4899 s
->max_early_data
= max_early_data
;
4904 uint32_t SSL_get_max_early_data(const SSL
*s
)
4906 return s
->max_early_data
;