2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 * ECC cipher suite support in OpenSSL originally developed by
13 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
15 /* ====================================================================
16 * Copyright 2005 Nokia. All rights reserved.
18 * The portions of the attached software ("Contribution") is developed by
19 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
22 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
23 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
24 * support (see RFC 4279) to OpenSSL.
26 * No patent licenses or other rights except those expressly stated in
27 * the OpenSSL open source license shall be deemed granted or received
28 * expressly, by implication, estoppel, or otherwise.
30 * No assurances are provided by Nokia that the Contribution does not
31 * infringe the patent or other intellectual property rights of any third
32 * party or that the license provides you with all the necessary rights
33 * to make use of the Contribution.
35 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
36 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
37 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
38 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
45 #include <openssl/objects.h>
46 #include <openssl/lhash.h>
47 #include <openssl/x509v3.h>
48 #include <openssl/rand.h>
49 #include <openssl/ocsp.h>
50 #include <openssl/dh.h>
51 #include <openssl/engine.h>
52 #include <openssl/async.h>
53 #include <openssl/ct.h>
55 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
57 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
59 * evil casts, but these functions are only called if there's a library
62 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
63 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
64 ssl_undefined_function
,
65 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
66 ssl_undefined_function
,
67 (int (*)(SSL
*, int))ssl_undefined_function
,
68 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
69 ssl_undefined_function
,
70 NULL
, /* client_finished_label */
71 0, /* client_finished_label_len */
72 NULL
, /* server_finished_label */
73 0, /* server_finished_label_len */
74 (int (*)(int))ssl_undefined_function
,
75 (int (*)(SSL
*, unsigned char *, size_t, const char *,
76 size_t, const unsigned char *, size_t,
77 int use_context
))ssl_undefined_function
,
80 struct ssl_async_args
{
84 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
86 int (*func_read
) (SSL
*, void *, size_t, size_t *);
87 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
88 int (*func_other
) (SSL
*);
98 DANETLS_MATCHING_FULL
, 0, NID_undef
101 DANETLS_MATCHING_2256
, 1, NID_sha256
104 DANETLS_MATCHING_2512
, 2, NID_sha512
108 static int ssl_write_early_finish(SSL
*s
);
110 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
112 const EVP_MD
**mdevp
;
114 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
115 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
118 if (dctx
->mdevp
!= NULL
)
121 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
122 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
124 if (mdord
== NULL
|| mdevp
== NULL
) {
127 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
131 /* Install default entries */
132 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
135 if (dane_mds
[i
].nid
== NID_undef
||
136 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
138 mdevp
[dane_mds
[i
].mtype
] = md
;
139 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
149 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
151 OPENSSL_free(dctx
->mdevp
);
154 OPENSSL_free(dctx
->mdord
);
159 static void tlsa_free(danetls_record
*t
)
163 OPENSSL_free(t
->data
);
164 EVP_PKEY_free(t
->spki
);
168 static void dane_final(SSL_DANE
*dane
)
170 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
173 sk_X509_pop_free(dane
->certs
, X509_free
);
176 X509_free(dane
->mcert
);
184 * dane_copy - Copy dane configuration, sans verification state.
186 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
191 if (!DANETLS_ENABLED(&from
->dane
))
194 dane_final(&to
->dane
);
195 to
->dane
.flags
= from
->dane
.flags
;
196 to
->dane
.dctx
= &to
->ctx
->dane
;
197 to
->dane
.trecs
= sk_danetls_record_new_null();
199 if (to
->dane
.trecs
== NULL
) {
200 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
204 num
= sk_danetls_record_num(from
->dane
.trecs
);
205 for (i
= 0; i
< num
; ++i
) {
206 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
208 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
209 t
->data
, t
->dlen
) <= 0)
215 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
216 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
220 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
221 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
225 if (mtype
> dctx
->mdmax
) {
226 const EVP_MD
**mdevp
;
228 int n
= ((int)mtype
) + 1;
230 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
232 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
237 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
239 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
244 /* Zero-fill any gaps */
245 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
253 dctx
->mdevp
[mtype
] = md
;
254 /* Coerce ordinal of disabled matching types to 0 */
255 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
260 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
262 if (mtype
> dane
->dctx
->mdmax
)
264 return dane
->dctx
->mdevp
[mtype
];
267 static int dane_tlsa_add(SSL_DANE
*dane
,
270 uint8_t mtype
, unsigned char *data
, size_t dlen
)
273 const EVP_MD
*md
= NULL
;
274 int ilen
= (int)dlen
;
278 if (dane
->trecs
== NULL
) {
279 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
283 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
284 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
288 if (usage
> DANETLS_USAGE_LAST
) {
289 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
293 if (selector
> DANETLS_SELECTOR_LAST
) {
294 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
298 if (mtype
!= DANETLS_MATCHING_FULL
) {
299 md
= tlsa_md_get(dane
, mtype
);
301 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
306 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
307 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
311 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
315 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
316 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
321 t
->selector
= selector
;
323 t
->data
= OPENSSL_malloc(dlen
);
324 if (t
->data
== NULL
) {
326 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
329 memcpy(t
->data
, data
, dlen
);
332 /* Validate and cache full certificate or public key */
333 if (mtype
== DANETLS_MATCHING_FULL
) {
334 const unsigned char *p
= data
;
336 EVP_PKEY
*pkey
= NULL
;
339 case DANETLS_SELECTOR_CERT
:
340 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
341 dlen
!= (size_t)(p
- data
)) {
343 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
346 if (X509_get0_pubkey(cert
) == NULL
) {
348 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
352 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
358 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
359 * records that contain full certificates of trust-anchors that are
360 * not present in the wire chain. For usage PKIX-TA(0), we augment
361 * the chain with untrusted Full(0) certificates from DNS, in case
362 * they are missing from the chain.
364 if ((dane
->certs
== NULL
&&
365 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
366 !sk_X509_push(dane
->certs
, cert
)) {
367 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
374 case DANETLS_SELECTOR_SPKI
:
375 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
376 dlen
!= (size_t)(p
- data
)) {
378 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
383 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
384 * records that contain full bare keys of trust-anchors that are
385 * not present in the wire chain.
387 if (usage
== DANETLS_USAGE_DANE_TA
)
396 * Find the right insertion point for the new record.
398 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
399 * they can be processed first, as they require no chain building, and no
400 * expiration or hostname checks. Because DANE-EE(3) is numerically
401 * largest, this is accomplished via descending sort by "usage".
403 * We also sort in descending order by matching ordinal to simplify
404 * the implementation of digest agility in the verification code.
406 * The choice of order for the selector is not significant, so we
407 * use the same descending order for consistency.
409 num
= sk_danetls_record_num(dane
->trecs
);
410 for (i
= 0; i
< num
; ++i
) {
411 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
413 if (rec
->usage
> usage
)
415 if (rec
->usage
< usage
)
417 if (rec
->selector
> selector
)
419 if (rec
->selector
< selector
)
421 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
426 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
428 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
431 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
436 static void clear_ciphers(SSL
*s
)
438 /* clear the current cipher */
439 ssl_clear_cipher_ctx(s
);
440 ssl_clear_hash_ctx(&s
->read_hash
);
441 ssl_clear_hash_ctx(&s
->write_hash
);
444 int SSL_clear(SSL
*s
)
446 if (s
->method
== NULL
) {
447 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
451 if (ssl_clear_bad_session(s
)) {
452 SSL_SESSION_free(s
->session
);
460 if (s
->renegotiate
) {
461 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
465 ossl_statem_clear(s
);
467 s
->version
= s
->method
->version
;
468 s
->client_version
= s
->version
;
469 s
->rwstate
= SSL_NOTHING
;
471 BUF_MEM_free(s
->init_buf
);
476 s
->key_update
= SSL_KEY_UPDATE_NONE
;
478 /* Reset DANE verification result state */
481 X509_free(s
->dane
.mcert
);
482 s
->dane
.mcert
= NULL
;
483 s
->dane
.mtlsa
= NULL
;
485 /* Clear the verification result peername */
486 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
489 * Check to see if we were changed into a different method, if so, revert
490 * back if we are not doing session-id reuse.
492 if (!ossl_statem_get_in_handshake(s
) && (s
->session
== NULL
)
493 && (s
->method
!= s
->ctx
->method
)) {
494 s
->method
->ssl_free(s
);
495 s
->method
= s
->ctx
->method
;
496 if (!s
->method
->ssl_new(s
))
499 s
->method
->ssl_clear(s
);
501 RECORD_LAYER_clear(&s
->rlayer
);
506 /** Used to change an SSL_CTXs default SSL method type */
507 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
509 STACK_OF(SSL_CIPHER
) *sk
;
513 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
514 &(ctx
->cipher_list_by_id
),
515 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
516 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
517 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
523 SSL
*SSL_new(SSL_CTX
*ctx
)
528 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
531 if (ctx
->method
== NULL
) {
532 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
536 s
= OPENSSL_zalloc(sizeof(*s
));
540 s
->lock
= CRYPTO_THREAD_lock_new();
541 if (s
->lock
== NULL
) {
542 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
547 RECORD_LAYER_init(&s
->rlayer
, s
);
549 s
->options
= ctx
->options
;
550 s
->dane
.flags
= ctx
->dane
.flags
;
551 s
->min_proto_version
= ctx
->min_proto_version
;
552 s
->max_proto_version
= ctx
->max_proto_version
;
554 s
->max_cert_list
= ctx
->max_cert_list
;
556 s
->max_early_data
= ctx
->max_early_data
;
559 * Earlier library versions used to copy the pointer to the CERT, not
560 * its contents; only when setting new parameters for the per-SSL
561 * copy, ssl_cert_new would be called (and the direct reference to
562 * the per-SSL_CTX settings would be lost, but those still were
563 * indirectly accessed for various purposes, and for that reason they
564 * used to be known as s->ctx->default_cert). Now we don't look at the
565 * SSL_CTX's CERT after having duplicated it once.
567 s
->cert
= ssl_cert_dup(ctx
->cert
);
571 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
572 s
->msg_callback
= ctx
->msg_callback
;
573 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
574 s
->verify_mode
= ctx
->verify_mode
;
575 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
576 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
577 OPENSSL_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
);
578 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
579 s
->verify_callback
= ctx
->default_verify_callback
;
580 s
->generate_session_id
= ctx
->generate_session_id
;
582 s
->param
= X509_VERIFY_PARAM_new();
583 if (s
->param
== NULL
)
585 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
586 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
587 s
->max_send_fragment
= ctx
->max_send_fragment
;
588 s
->split_send_fragment
= ctx
->split_send_fragment
;
589 s
->max_pipelines
= ctx
->max_pipelines
;
590 if (s
->max_pipelines
> 1)
591 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
592 if (ctx
->default_read_buf_len
> 0)
593 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
598 s
->ext
.debug_arg
= NULL
;
599 s
->ext
.ticket_expected
= 0;
600 s
->ext
.status_type
= ctx
->ext
.status_type
;
601 s
->ext
.status_expected
= 0;
602 s
->ext
.ocsp
.ids
= NULL
;
603 s
->ext
.ocsp
.exts
= NULL
;
604 s
->ext
.ocsp
.resp
= NULL
;
605 s
->ext
.ocsp
.resp_len
= 0;
607 s
->session_ctx
= ctx
;
608 #ifndef OPENSSL_NO_EC
609 if (ctx
->ext
.ecpointformats
) {
610 s
->ext
.ecpointformats
=
611 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
612 ctx
->ext
.ecpointformats_len
);
613 if (!s
->ext
.ecpointformats
)
615 s
->ext
.ecpointformats_len
=
616 ctx
->ext
.ecpointformats_len
;
618 if (ctx
->ext
.supportedgroups
) {
619 s
->ext
.supportedgroups
=
620 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
621 ctx
->ext
.supportedgroups_len
);
622 if (!s
->ext
.supportedgroups
)
624 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
627 #ifndef OPENSSL_NO_NEXTPROTONEG
631 if (s
->ctx
->ext
.alpn
) {
632 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
633 if (s
->ext
.alpn
== NULL
)
635 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
636 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
639 s
->verified_chain
= NULL
;
640 s
->verify_result
= X509_V_OK
;
642 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
643 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
645 s
->method
= ctx
->method
;
647 s
->key_update
= SSL_KEY_UPDATE_NONE
;
649 if (!s
->method
->ssl_new(s
))
652 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
657 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
660 #ifndef OPENSSL_NO_PSK
661 s
->psk_client_callback
= ctx
->psk_client_callback
;
662 s
->psk_server_callback
= ctx
->psk_server_callback
;
667 #ifndef OPENSSL_NO_CT
668 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
669 ctx
->ct_validation_callback_arg
))
676 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
680 int SSL_is_dtls(const SSL
*s
)
682 return SSL_IS_DTLS(s
) ? 1 : 0;
685 int SSL_up_ref(SSL
*s
)
689 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
692 REF_PRINT_COUNT("SSL", s
);
693 REF_ASSERT_ISNT(i
< 2);
694 return ((i
> 1) ? 1 : 0);
697 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
698 unsigned int sid_ctx_len
)
700 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
701 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
702 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
705 ctx
->sid_ctx_length
= sid_ctx_len
;
706 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
711 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
712 unsigned int sid_ctx_len
)
714 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
715 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
716 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
719 ssl
->sid_ctx_length
= sid_ctx_len
;
720 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
725 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
727 CRYPTO_THREAD_write_lock(ctx
->lock
);
728 ctx
->generate_session_id
= cb
;
729 CRYPTO_THREAD_unlock(ctx
->lock
);
733 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
735 CRYPTO_THREAD_write_lock(ssl
->lock
);
736 ssl
->generate_session_id
= cb
;
737 CRYPTO_THREAD_unlock(ssl
->lock
);
741 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
745 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
746 * we can "construct" a session to give us the desired check - ie. to
747 * find if there's a session in the hash table that would conflict with
748 * any new session built out of this id/id_len and the ssl_version in use
753 if (id_len
> sizeof r
.session_id
)
756 r
.ssl_version
= ssl
->version
;
757 r
.session_id_length
= id_len
;
758 memcpy(r
.session_id
, id
, id_len
);
760 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
761 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
762 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
766 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
768 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
771 int SSL_set_purpose(SSL
*s
, int purpose
)
773 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
776 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
778 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
781 int SSL_set_trust(SSL
*s
, int trust
)
783 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
786 int SSL_set1_host(SSL
*s
, const char *hostname
)
788 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
791 int SSL_add1_host(SSL
*s
, const char *hostname
)
793 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
796 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
798 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
801 const char *SSL_get0_peername(SSL
*s
)
803 return X509_VERIFY_PARAM_get0_peername(s
->param
);
806 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
808 return dane_ctx_enable(&ctx
->dane
);
811 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
813 unsigned long orig
= ctx
->dane
.flags
;
815 ctx
->dane
.flags
|= flags
;
819 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
821 unsigned long orig
= ctx
->dane
.flags
;
823 ctx
->dane
.flags
&= ~flags
;
827 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
829 SSL_DANE
*dane
= &s
->dane
;
831 if (s
->ctx
->dane
.mdmax
== 0) {
832 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
835 if (dane
->trecs
!= NULL
) {
836 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
841 * Default SNI name. This rejects empty names, while set1_host below
842 * accepts them and disables host name checks. To avoid side-effects with
843 * invalid input, set the SNI name first.
845 if (s
->ext
.hostname
== NULL
) {
846 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
847 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
852 /* Primary RFC6125 reference identifier */
853 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
854 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
860 dane
->dctx
= &s
->ctx
->dane
;
861 dane
->trecs
= sk_danetls_record_new_null();
863 if (dane
->trecs
== NULL
) {
864 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
870 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
872 unsigned long orig
= ssl
->dane
.flags
;
874 ssl
->dane
.flags
|= flags
;
878 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
880 unsigned long orig
= ssl
->dane
.flags
;
882 ssl
->dane
.flags
&= ~flags
;
886 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
888 SSL_DANE
*dane
= &s
->dane
;
890 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
894 *mcert
= dane
->mcert
;
896 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
901 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
902 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
904 SSL_DANE
*dane
= &s
->dane
;
906 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
910 *usage
= dane
->mtlsa
->usage
;
912 *selector
= dane
->mtlsa
->selector
;
914 *mtype
= dane
->mtlsa
->mtype
;
916 *data
= dane
->mtlsa
->data
;
918 *dlen
= dane
->mtlsa
->dlen
;
923 SSL_DANE
*SSL_get0_dane(SSL
*s
)
928 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
929 uint8_t mtype
, unsigned char *data
, size_t dlen
)
931 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
934 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
937 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
940 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
942 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
945 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
947 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
950 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
955 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
960 void SSL_certs_clear(SSL
*s
)
962 ssl_cert_clear_certs(s
->cert
);
965 void SSL_free(SSL
*s
)
972 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
973 REF_PRINT_COUNT("SSL", s
);
976 REF_ASSERT_ISNT(i
< 0);
978 X509_VERIFY_PARAM_free(s
->param
);
979 dane_final(&s
->dane
);
980 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
982 ssl_free_wbio_buffer(s
);
984 BIO_free_all(s
->wbio
);
985 BIO_free_all(s
->rbio
);
987 BUF_MEM_free(s
->init_buf
);
989 /* add extra stuff */
990 sk_SSL_CIPHER_free(s
->cipher_list
);
991 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
993 /* Make the next call work :-) */
994 if (s
->session
!= NULL
) {
995 ssl_clear_bad_session(s
);
996 SSL_SESSION_free(s
->session
);
1001 ssl_cert_free(s
->cert
);
1002 /* Free up if allocated */
1004 OPENSSL_free(s
->ext
.hostname
);
1005 SSL_CTX_free(s
->session_ctx
);
1006 #ifndef OPENSSL_NO_EC
1007 OPENSSL_free(s
->ext
.ecpointformats
);
1008 OPENSSL_free(s
->ext
.supportedgroups
);
1009 #endif /* OPENSSL_NO_EC */
1010 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1011 #ifndef OPENSSL_NO_OCSP
1012 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1014 #ifndef OPENSSL_NO_CT
1015 SCT_LIST_free(s
->scts
);
1016 OPENSSL_free(s
->ext
.scts
);
1018 OPENSSL_free(s
->ext
.ocsp
.resp
);
1019 OPENSSL_free(s
->ext
.alpn
);
1020 OPENSSL_free(s
->ext
.tls13_cookie
);
1021 OPENSSL_free(s
->clienthello
);
1023 sk_X509_NAME_pop_free(s
->client_CA
, X509_NAME_free
);
1025 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1027 if (s
->method
!= NULL
)
1028 s
->method
->ssl_free(s
);
1030 RECORD_LAYER_release(&s
->rlayer
);
1032 SSL_CTX_free(s
->ctx
);
1034 ASYNC_WAIT_CTX_free(s
->waitctx
);
1036 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1037 OPENSSL_free(s
->ext
.npn
);
1040 #ifndef OPENSSL_NO_SRTP
1041 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1044 CRYPTO_THREAD_lock_free(s
->lock
);
1049 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1051 BIO_free_all(s
->rbio
);
1055 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1058 * If the output buffering BIO is still in place, remove it
1060 if (s
->bbio
!= NULL
)
1061 s
->wbio
= BIO_pop(s
->wbio
);
1063 BIO_free_all(s
->wbio
);
1066 /* Re-attach |bbio| to the new |wbio|. */
1067 if (s
->bbio
!= NULL
)
1068 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1071 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1074 * For historical reasons, this function has many different cases in
1075 * ownership handling.
1078 /* If nothing has changed, do nothing */
1079 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1083 * If the two arguments are equal then one fewer reference is granted by the
1084 * caller than we want to take
1086 if (rbio
!= NULL
&& rbio
== wbio
)
1090 * If only the wbio is changed only adopt one reference.
1092 if (rbio
== SSL_get_rbio(s
)) {
1093 SSL_set0_wbio(s
, wbio
);
1097 * There is an asymmetry here for historical reasons. If only the rbio is
1098 * changed AND the rbio and wbio were originally different, then we only
1099 * adopt one reference.
1101 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1102 SSL_set0_rbio(s
, rbio
);
1106 /* Otherwise, adopt both references. */
1107 SSL_set0_rbio(s
, rbio
);
1108 SSL_set0_wbio(s
, wbio
);
1111 BIO
*SSL_get_rbio(const SSL
*s
)
1116 BIO
*SSL_get_wbio(const SSL
*s
)
1118 if (s
->bbio
!= NULL
) {
1120 * If |bbio| is active, the true caller-configured BIO is its
1123 return BIO_next(s
->bbio
);
1128 int SSL_get_fd(const SSL
*s
)
1130 return SSL_get_rfd(s
);
1133 int SSL_get_rfd(const SSL
*s
)
1138 b
= SSL_get_rbio(s
);
1139 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1141 BIO_get_fd(r
, &ret
);
1145 int SSL_get_wfd(const SSL
*s
)
1150 b
= SSL_get_wbio(s
);
1151 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1153 BIO_get_fd(r
, &ret
);
1157 #ifndef OPENSSL_NO_SOCK
1158 int SSL_set_fd(SSL
*s
, int fd
)
1163 bio
= BIO_new(BIO_s_socket());
1166 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1169 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1170 SSL_set_bio(s
, bio
, bio
);
1176 int SSL_set_wfd(SSL
*s
, int fd
)
1178 BIO
*rbio
= SSL_get_rbio(s
);
1180 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1181 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1182 BIO
*bio
= BIO_new(BIO_s_socket());
1185 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1188 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1189 SSL_set0_wbio(s
, bio
);
1192 SSL_set0_wbio(s
, rbio
);
1197 int SSL_set_rfd(SSL
*s
, int fd
)
1199 BIO
*wbio
= SSL_get_wbio(s
);
1201 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1202 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1203 BIO
*bio
= BIO_new(BIO_s_socket());
1206 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1209 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1210 SSL_set0_rbio(s
, bio
);
1213 SSL_set0_rbio(s
, wbio
);
1220 /* return length of latest Finished message we sent, copy to 'buf' */
1221 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1225 if (s
->s3
!= NULL
) {
1226 ret
= s
->s3
->tmp
.finish_md_len
;
1229 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1234 /* return length of latest Finished message we expected, copy to 'buf' */
1235 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1239 if (s
->s3
!= NULL
) {
1240 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1243 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1248 int SSL_get_verify_mode(const SSL
*s
)
1250 return (s
->verify_mode
);
1253 int SSL_get_verify_depth(const SSL
*s
)
1255 return X509_VERIFY_PARAM_get_depth(s
->param
);
1258 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1259 return (s
->verify_callback
);
1262 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1264 return (ctx
->verify_mode
);
1267 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1269 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1272 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1273 return (ctx
->default_verify_callback
);
1276 void SSL_set_verify(SSL
*s
, int mode
,
1277 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1279 s
->verify_mode
= mode
;
1280 if (callback
!= NULL
)
1281 s
->verify_callback
= callback
;
1284 void SSL_set_verify_depth(SSL
*s
, int depth
)
1286 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1289 void SSL_set_read_ahead(SSL
*s
, int yes
)
1291 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1294 int SSL_get_read_ahead(const SSL
*s
)
1296 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1299 int SSL_pending(const SSL
*s
)
1301 size_t pending
= s
->method
->ssl_pending(s
);
1304 * SSL_pending cannot work properly if read-ahead is enabled
1305 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1306 * impossible to fix since SSL_pending cannot report errors that may be
1307 * observed while scanning the new data. (Note that SSL_pending() is
1308 * often used as a boolean value, so we'd better not return -1.)
1310 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1311 * we just return INT_MAX.
1313 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1316 int SSL_has_pending(const SSL
*s
)
1319 * Similar to SSL_pending() but returns a 1 to indicate that we have
1320 * unprocessed data available or 0 otherwise (as opposed to the number of
1321 * bytes available). Unlike SSL_pending() this will take into account
1322 * read_ahead data. A 1 return simply indicates that we have unprocessed
1323 * data. That data may not result in any application data, or we may fail
1324 * to parse the records for some reason.
1329 return RECORD_LAYER_read_pending(&s
->rlayer
);
1332 X509
*SSL_get_peer_certificate(const SSL
*s
)
1336 if ((s
== NULL
) || (s
->session
== NULL
))
1339 r
= s
->session
->peer
;
1349 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1353 if ((s
== NULL
) || (s
->session
== NULL
))
1356 r
= s
->session
->peer_chain
;
1359 * If we are a client, cert_chain includes the peer's own certificate; if
1360 * we are a server, it does not.
1367 * Now in theory, since the calling process own 't' it should be safe to
1368 * modify. We need to be able to read f without being hassled
1370 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1373 /* Do we need to to SSL locking? */
1374 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1379 * what if we are setup for one protocol version but want to talk another
1381 if (t
->method
!= f
->method
) {
1382 t
->method
->ssl_free(t
);
1383 t
->method
= f
->method
;
1384 if (t
->method
->ssl_new(t
) == 0)
1388 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1389 ssl_cert_free(t
->cert
);
1391 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1398 /* Fix this so it checks all the valid key/cert options */
1399 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1401 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1402 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1405 if (ctx
->cert
->key
->privatekey
== NULL
) {
1406 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1409 return (X509_check_private_key
1410 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1413 /* Fix this function so that it takes an optional type parameter */
1414 int SSL_check_private_key(const SSL
*ssl
)
1417 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1420 if (ssl
->cert
->key
->x509
== NULL
) {
1421 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1424 if (ssl
->cert
->key
->privatekey
== NULL
) {
1425 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1428 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1429 ssl
->cert
->key
->privatekey
));
1432 int SSL_waiting_for_async(SSL
*s
)
1440 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1442 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1446 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1449 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1450 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1452 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1456 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1460 int SSL_accept(SSL
*s
)
1462 if (s
->handshake_func
== NULL
) {
1463 /* Not properly initialized yet */
1464 SSL_set_accept_state(s
);
1467 return SSL_do_handshake(s
);
1470 int SSL_connect(SSL
*s
)
1472 if (s
->handshake_func
== NULL
) {
1473 /* Not properly initialized yet */
1474 SSL_set_connect_state(s
);
1477 return SSL_do_handshake(s
);
1480 long SSL_get_default_timeout(const SSL
*s
)
1482 return (s
->method
->get_timeout());
1485 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1486 int (*func
) (void *))
1489 if (s
->waitctx
== NULL
) {
1490 s
->waitctx
= ASYNC_WAIT_CTX_new();
1491 if (s
->waitctx
== NULL
)
1494 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1495 sizeof(struct ssl_async_args
))) {
1497 s
->rwstate
= SSL_NOTHING
;
1498 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1501 s
->rwstate
= SSL_ASYNC_PAUSED
;
1504 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1510 s
->rwstate
= SSL_NOTHING
;
1511 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1512 /* Shouldn't happen */
1517 static int ssl_io_intern(void *vargs
)
1519 struct ssl_async_args
*args
;
1524 args
= (struct ssl_async_args
*)vargs
;
1528 switch (args
->type
) {
1530 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1532 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1534 return args
->f
.func_other(s
);
1539 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1541 if (s
->handshake_func
== NULL
) {
1542 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1546 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1547 s
->rwstate
= SSL_NOTHING
;
1551 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1552 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1553 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1557 * If we are a client and haven't received the ServerHello etc then we
1560 ossl_statem_check_finish_init(s
, 0);
1562 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1563 struct ssl_async_args args
;
1569 args
.type
= READFUNC
;
1570 args
.f
.func_read
= s
->method
->ssl_read
;
1572 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1573 *readbytes
= s
->asyncrw
;
1576 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1580 int SSL_read(SSL
*s
, void *buf
, int num
)
1586 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1590 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1593 * The cast is safe here because ret should be <= INT_MAX because num is
1597 ret
= (int)readbytes
;
1602 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1604 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1611 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1616 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1617 return SSL_READ_EARLY_DATA_ERROR
;
1620 switch (s
->early_data_state
) {
1621 case SSL_EARLY_DATA_NONE
:
1622 if (!SSL_in_before(s
)) {
1623 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1624 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1625 return SSL_READ_EARLY_DATA_ERROR
;
1629 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1630 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1631 ret
= SSL_accept(s
);
1634 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1635 return SSL_READ_EARLY_DATA_ERROR
;
1639 case SSL_EARLY_DATA_READ_RETRY
:
1640 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1641 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1642 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1644 * Record layer will call ssl_end_of_early_data_seen() if we see
1645 * that alert - which updates the early_data_state to
1646 * SSL_EARLY_DATA_FINISHED_READING
1648 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1649 != SSL_EARLY_DATA_FINISHED_READING
)) {
1650 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1651 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1652 : SSL_READ_EARLY_DATA_ERROR
;
1655 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1658 return SSL_READ_EARLY_DATA_FINISH
;
1661 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1662 return SSL_READ_EARLY_DATA_ERROR
;
1666 int ssl_end_of_early_data_seen(SSL
*s
)
1668 if (s
->early_data_state
== SSL_EARLY_DATA_READING
1669 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1670 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1671 ossl_statem_finish_early_data(s
);
1678 int SSL_get_early_data_status(const SSL
*s
)
1680 return s
->ext
.early_data
;
1683 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1685 if (s
->handshake_func
== NULL
) {
1686 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1690 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1693 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1694 struct ssl_async_args args
;
1700 args
.type
= READFUNC
;
1701 args
.f
.func_read
= s
->method
->ssl_peek
;
1703 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1704 *readbytes
= s
->asyncrw
;
1707 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1711 int SSL_peek(SSL
*s
, void *buf
, int num
)
1717 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1721 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1724 * The cast is safe here because ret should be <= INT_MAX because num is
1728 ret
= (int)readbytes
;
1734 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1736 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1743 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1745 if (s
->handshake_func
== NULL
) {
1746 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1750 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1751 s
->rwstate
= SSL_NOTHING
;
1752 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1756 if (s
->early_data_state
== SSL_EARLY_DATA_WRITE_RETRY
) {
1758 * We're still writing early data. We need to stop that so we can write
1761 if (!ssl_write_early_finish(s
))
1763 } else if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1764 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1765 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1766 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1769 /* If we are a client and haven't sent the Finished we better do that */
1770 ossl_statem_check_finish_init(s
, 1);
1772 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1774 struct ssl_async_args args
;
1777 args
.buf
= (void *)buf
;
1779 args
.type
= WRITEFUNC
;
1780 args
.f
.func_write
= s
->method
->ssl_write
;
1782 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1783 *written
= s
->asyncrw
;
1786 return s
->method
->ssl_write(s
, buf
, num
, written
);
1790 int SSL_write(SSL
*s
, const void *buf
, int num
)
1796 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1800 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1803 * The cast is safe here because ret should be <= INT_MAX because num is
1812 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1814 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1821 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1825 switch (s
->early_data_state
) {
1826 case SSL_EARLY_DATA_NONE
:
1828 || !SSL_in_before(s
)
1829 || s
->session
== NULL
1830 || s
->session
->ext
.max_early_data
== 0) {
1831 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1832 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1837 case SSL_EARLY_DATA_CONNECT_RETRY
:
1838 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1839 ret
= SSL_connect(s
);
1842 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1847 case SSL_EARLY_DATA_WRITE_RETRY
:
1848 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1849 ret
= SSL_write_ex(s
, buf
, num
, written
);
1850 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1853 case SSL_EARLY_DATA_READ_RETRY
:
1854 /* We are a server writing to an unauthenticated client */
1855 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1856 ret
= SSL_write_ex(s
, buf
, num
, written
);
1857 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1861 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1866 static int ssl_write_early_finish(SSL
*s
)
1870 if (s
->early_data_state
!= SSL_EARLY_DATA_WRITE_RETRY
) {
1871 SSLerr(SSL_F_SSL_WRITE_EARLY_FINISH
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1875 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1876 ret
= ssl3_send_alert(s
, SSL3_AL_WARNING
, SSL_AD_END_OF_EARLY_DATA
);
1878 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1881 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_WRITING
;
1883 * We set the enc_write_ctx back to NULL because we may end up writing
1884 * in cleartext again if we get a HelloRetryRequest from the server.
1886 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
1887 s
->enc_write_ctx
= NULL
;
1888 ossl_statem_set_in_init(s
, 1);
1892 int SSL_shutdown(SSL
*s
)
1895 * Note that this function behaves differently from what one might
1896 * expect. Return values are 0 for no success (yet), 1 for success; but
1897 * calling it once is usually not enough, even if blocking I/O is used
1898 * (see ssl3_shutdown).
1901 if (s
->handshake_func
== NULL
) {
1902 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1906 if (!SSL_in_init(s
)) {
1907 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1908 struct ssl_async_args args
;
1911 args
.type
= OTHERFUNC
;
1912 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1914 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1916 return s
->method
->ssl_shutdown(s
);
1919 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1924 int SSL_key_update(SSL
*s
, int updatetype
)
1927 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1928 * negotiated, and that it is appropriate to call SSL_key_update() instead
1929 * of SSL_renegotiate().
1931 if (!SSL_IS_TLS13(s
)) {
1932 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
1936 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
1937 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
1938 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
1942 if (!SSL_is_init_finished(s
)) {
1943 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
1947 ossl_statem_set_in_init(s
, 1);
1948 s
->key_update
= updatetype
;
1952 int SSL_get_key_update_type(SSL
*s
)
1954 return s
->key_update
;
1957 int SSL_renegotiate(SSL
*s
)
1959 if (SSL_IS_TLS13(s
)) {
1960 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
1964 if (s
->renegotiate
== 0)
1969 return (s
->method
->ssl_renegotiate(s
));
1972 int SSL_renegotiate_abbreviated(SSL
*s
)
1974 if (SSL_IS_TLS13(s
))
1977 if (s
->renegotiate
== 0)
1982 return (s
->method
->ssl_renegotiate(s
));
1985 int SSL_renegotiate_pending(SSL
*s
)
1988 * becomes true when negotiation is requested; false again once a
1989 * handshake has finished
1991 return (s
->renegotiate
!= 0);
1994 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
1999 case SSL_CTRL_GET_READ_AHEAD
:
2000 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
2001 case SSL_CTRL_SET_READ_AHEAD
:
2002 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2003 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2006 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2007 s
->msg_callback_arg
= parg
;
2011 return (s
->mode
|= larg
);
2012 case SSL_CTRL_CLEAR_MODE
:
2013 return (s
->mode
&= ~larg
);
2014 case SSL_CTRL_GET_MAX_CERT_LIST
:
2015 return (long)(s
->max_cert_list
);
2016 case SSL_CTRL_SET_MAX_CERT_LIST
:
2019 l
= (long)s
->max_cert_list
;
2020 s
->max_cert_list
= (size_t)larg
;
2022 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2023 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2025 s
->max_send_fragment
= larg
;
2026 if (s
->max_send_fragment
< s
->split_send_fragment
)
2027 s
->split_send_fragment
= s
->max_send_fragment
;
2029 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2030 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2032 s
->split_send_fragment
= larg
;
2034 case SSL_CTRL_SET_MAX_PIPELINES
:
2035 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2037 s
->max_pipelines
= larg
;
2039 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2041 case SSL_CTRL_GET_RI_SUPPORT
:
2043 return s
->s3
->send_connection_binding
;
2046 case SSL_CTRL_CERT_FLAGS
:
2047 return (s
->cert
->cert_flags
|= larg
);
2048 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2049 return (s
->cert
->cert_flags
&= ~larg
);
2051 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2053 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2055 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2056 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2058 return TLS_CIPHER_LEN
;
2060 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2061 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2063 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2067 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2068 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2069 &s
->min_proto_version
);
2070 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2071 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2072 &s
->max_proto_version
);
2074 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2078 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2081 case SSL_CTRL_SET_MSG_CALLBACK
:
2082 s
->msg_callback
= (void (*)
2083 (int write_p
, int version
, int content_type
,
2084 const void *buf
, size_t len
, SSL
*ssl
,
2089 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2093 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2095 return ctx
->sessions
;
2098 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2101 /* For some cases with ctx == NULL perform syntax checks */
2104 #ifndef OPENSSL_NO_EC
2105 case SSL_CTRL_SET_GROUPS_LIST
:
2106 return tls1_set_groups_list(NULL
, NULL
, parg
);
2108 case SSL_CTRL_SET_SIGALGS_LIST
:
2109 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2110 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2117 case SSL_CTRL_GET_READ_AHEAD
:
2118 return (ctx
->read_ahead
);
2119 case SSL_CTRL_SET_READ_AHEAD
:
2120 l
= ctx
->read_ahead
;
2121 ctx
->read_ahead
= larg
;
2124 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2125 ctx
->msg_callback_arg
= parg
;
2128 case SSL_CTRL_GET_MAX_CERT_LIST
:
2129 return (long)(ctx
->max_cert_list
);
2130 case SSL_CTRL_SET_MAX_CERT_LIST
:
2133 l
= (long)ctx
->max_cert_list
;
2134 ctx
->max_cert_list
= (size_t)larg
;
2137 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2140 l
= (long)ctx
->session_cache_size
;
2141 ctx
->session_cache_size
= (size_t)larg
;
2143 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2144 return (long)(ctx
->session_cache_size
);
2145 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2146 l
= ctx
->session_cache_mode
;
2147 ctx
->session_cache_mode
= larg
;
2149 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2150 return (ctx
->session_cache_mode
);
2152 case SSL_CTRL_SESS_NUMBER
:
2153 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2154 case SSL_CTRL_SESS_CONNECT
:
2155 return (ctx
->stats
.sess_connect
);
2156 case SSL_CTRL_SESS_CONNECT_GOOD
:
2157 return (ctx
->stats
.sess_connect_good
);
2158 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2159 return (ctx
->stats
.sess_connect_renegotiate
);
2160 case SSL_CTRL_SESS_ACCEPT
:
2161 return (ctx
->stats
.sess_accept
);
2162 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2163 return (ctx
->stats
.sess_accept_good
);
2164 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2165 return (ctx
->stats
.sess_accept_renegotiate
);
2166 case SSL_CTRL_SESS_HIT
:
2167 return (ctx
->stats
.sess_hit
);
2168 case SSL_CTRL_SESS_CB_HIT
:
2169 return (ctx
->stats
.sess_cb_hit
);
2170 case SSL_CTRL_SESS_MISSES
:
2171 return (ctx
->stats
.sess_miss
);
2172 case SSL_CTRL_SESS_TIMEOUTS
:
2173 return (ctx
->stats
.sess_timeout
);
2174 case SSL_CTRL_SESS_CACHE_FULL
:
2175 return (ctx
->stats
.sess_cache_full
);
2177 return (ctx
->mode
|= larg
);
2178 case SSL_CTRL_CLEAR_MODE
:
2179 return (ctx
->mode
&= ~larg
);
2180 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2181 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2183 ctx
->max_send_fragment
= larg
;
2184 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2185 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2187 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2188 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2190 ctx
->split_send_fragment
= larg
;
2192 case SSL_CTRL_SET_MAX_PIPELINES
:
2193 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2195 ctx
->max_pipelines
= larg
;
2197 case SSL_CTRL_CERT_FLAGS
:
2198 return (ctx
->cert
->cert_flags
|= larg
);
2199 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2200 return (ctx
->cert
->cert_flags
&= ~larg
);
2201 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2202 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2203 &ctx
->min_proto_version
);
2204 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2205 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2206 &ctx
->max_proto_version
);
2208 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2212 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2215 case SSL_CTRL_SET_MSG_CALLBACK
:
2216 ctx
->msg_callback
= (void (*)
2217 (int write_p
, int version
, int content_type
,
2218 const void *buf
, size_t len
, SSL
*ssl
,
2223 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2227 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2236 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2237 const SSL_CIPHER
*const *bp
)
2239 if ((*ap
)->id
> (*bp
)->id
)
2241 if ((*ap
)->id
< (*bp
)->id
)
2246 /** return a STACK of the ciphers available for the SSL and in order of
2248 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2251 if (s
->cipher_list
!= NULL
) {
2252 return (s
->cipher_list
);
2253 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2254 return (s
->ctx
->cipher_list
);
2260 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2262 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2264 return s
->session
->ciphers
;
2267 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2269 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2271 ciphers
= SSL_get_ciphers(s
);
2274 ssl_set_client_disabled(s
);
2275 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2276 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2277 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
)) {
2279 sk
= sk_SSL_CIPHER_new_null();
2282 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2283 sk_SSL_CIPHER_free(sk
);
2291 /** return a STACK of the ciphers available for the SSL and in order of
2293 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2296 if (s
->cipher_list_by_id
!= NULL
) {
2297 return (s
->cipher_list_by_id
);
2298 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2299 return (s
->ctx
->cipher_list_by_id
);
2305 /** The old interface to get the same thing as SSL_get_ciphers() */
2306 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2308 const SSL_CIPHER
*c
;
2309 STACK_OF(SSL_CIPHER
) *sk
;
2313 sk
= SSL_get_ciphers(s
);
2314 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2316 c
= sk_SSL_CIPHER_value(sk
, n
);
2322 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2324 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2327 return ctx
->cipher_list
;
2331 /** specify the ciphers to be used by default by the SSL_CTX */
2332 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2334 STACK_OF(SSL_CIPHER
) *sk
;
2336 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2337 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2339 * ssl_create_cipher_list may return an empty stack if it was unable to
2340 * find a cipher matching the given rule string (for example if the rule
2341 * string specifies a cipher which has been disabled). This is not an
2342 * error as far as ssl_create_cipher_list is concerned, and hence
2343 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2347 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2348 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2354 /** specify the ciphers to be used by the SSL */
2355 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2357 STACK_OF(SSL_CIPHER
) *sk
;
2359 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2360 &s
->cipher_list_by_id
, str
, s
->cert
);
2361 /* see comment in SSL_CTX_set_cipher_list */
2364 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2365 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2371 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2374 STACK_OF(SSL_CIPHER
) *sk
;
2375 const SSL_CIPHER
*c
;
2378 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2382 sk
= s
->session
->ciphers
;
2384 if (sk_SSL_CIPHER_num(sk
) == 0)
2387 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2390 c
= sk_SSL_CIPHER_value(sk
, i
);
2391 n
= strlen(c
->name
);
2398 memcpy(p
, c
->name
, n
+ 1);
2407 /** return a servername extension value if provided in Client Hello, or NULL.
2408 * So far, only host_name types are defined (RFC 3546).
2411 const char *SSL_get_servername(const SSL
*s
, const int type
)
2413 if (type
!= TLSEXT_NAMETYPE_host_name
)
2416 return s
->session
&& !s
->ext
.hostname
?
2417 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2420 int SSL_get_servername_type(const SSL
*s
)
2423 && (!s
->ext
.hostname
? s
->session
->
2424 ext
.hostname
: s
->ext
.hostname
))
2425 return TLSEXT_NAMETYPE_host_name
;
2430 * SSL_select_next_proto implements the standard protocol selection. It is
2431 * expected that this function is called from the callback set by
2432 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2433 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2434 * not included in the length. A byte string of length 0 is invalid. No byte
2435 * string may be truncated. The current, but experimental algorithm for
2436 * selecting the protocol is: 1) If the server doesn't support NPN then this
2437 * is indicated to the callback. In this case, the client application has to
2438 * abort the connection or have a default application level protocol. 2) If
2439 * the server supports NPN, but advertises an empty list then the client
2440 * selects the first protocol in its list, but indicates via the API that this
2441 * fallback case was enacted. 3) Otherwise, the client finds the first
2442 * protocol in the server's list that it supports and selects this protocol.
2443 * This is because it's assumed that the server has better information about
2444 * which protocol a client should use. 4) If the client doesn't support any
2445 * of the server's advertised protocols, then this is treated the same as
2446 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2447 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2449 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2450 const unsigned char *server
,
2451 unsigned int server_len
,
2452 const unsigned char *client
, unsigned int client_len
)
2455 const unsigned char *result
;
2456 int status
= OPENSSL_NPN_UNSUPPORTED
;
2459 * For each protocol in server preference order, see if we support it.
2461 for (i
= 0; i
< server_len
;) {
2462 for (j
= 0; j
< client_len
;) {
2463 if (server
[i
] == client
[j
] &&
2464 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2465 /* We found a match */
2466 result
= &server
[i
];
2467 status
= OPENSSL_NPN_NEGOTIATED
;
2477 /* There's no overlap between our protocols and the server's list. */
2479 status
= OPENSSL_NPN_NO_OVERLAP
;
2482 *out
= (unsigned char *)result
+ 1;
2483 *outlen
= result
[0];
2487 #ifndef OPENSSL_NO_NEXTPROTONEG
2489 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2490 * client's requested protocol for this connection and returns 0. If the
2491 * client didn't request any protocol, then *data is set to NULL. Note that
2492 * the client can request any protocol it chooses. The value returned from
2493 * this function need not be a member of the list of supported protocols
2494 * provided by the callback.
2496 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2503 *len
= (unsigned int)s
->ext
.npn_len
;
2508 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2509 * a TLS server needs a list of supported protocols for Next Protocol
2510 * Negotiation. The returned list must be in wire format. The list is
2511 * returned by setting |out| to point to it and |outlen| to its length. This
2512 * memory will not be modified, but one should assume that the SSL* keeps a
2513 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2514 * wishes to advertise. Otherwise, no such extension will be included in the
2517 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2518 SSL_CTX_npn_advertised_cb_func cb
,
2521 ctx
->ext
.npn_advertised_cb
= cb
;
2522 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2526 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2527 * client needs to select a protocol from the server's provided list. |out|
2528 * must be set to point to the selected protocol (which may be within |in|).
2529 * The length of the protocol name must be written into |outlen|. The
2530 * server's advertised protocols are provided in |in| and |inlen|. The
2531 * callback can assume that |in| is syntactically valid. The client must
2532 * select a protocol. It is fatal to the connection if this callback returns
2533 * a value other than SSL_TLSEXT_ERR_OK.
2535 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2536 SSL_CTX_npn_select_cb_func cb
,
2539 ctx
->ext
.npn_select_cb
= cb
;
2540 ctx
->ext
.npn_select_cb_arg
= arg
;
2545 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2546 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2547 * length-prefixed strings). Returns 0 on success.
2549 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2550 unsigned int protos_len
)
2552 OPENSSL_free(ctx
->ext
.alpn
);
2553 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2554 if (ctx
->ext
.alpn
== NULL
) {
2555 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2558 ctx
->ext
.alpn_len
= protos_len
;
2564 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2565 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2566 * length-prefixed strings). Returns 0 on success.
2568 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2569 unsigned int protos_len
)
2571 OPENSSL_free(ssl
->ext
.alpn
);
2572 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2573 if (ssl
->ext
.alpn
== NULL
) {
2574 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2577 ssl
->ext
.alpn_len
= protos_len
;
2583 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2584 * called during ClientHello processing in order to select an ALPN protocol
2585 * from the client's list of offered protocols.
2587 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2588 SSL_CTX_alpn_select_cb_func cb
,
2591 ctx
->ext
.alpn_select_cb
= cb
;
2592 ctx
->ext
.alpn_select_cb_arg
= arg
;
2596 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2597 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2598 * (not including the leading length-prefix byte). If the server didn't
2599 * respond with a negotiated protocol then |*len| will be zero.
2601 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2606 *data
= ssl
->s3
->alpn_selected
;
2610 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2613 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2614 const char *label
, size_t llen
,
2615 const unsigned char *p
, size_t plen
,
2618 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2621 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2626 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2628 const unsigned char *session_id
= a
->session_id
;
2630 unsigned char tmp_storage
[4];
2632 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2633 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2634 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2635 session_id
= tmp_storage
;
2639 ((unsigned long)session_id
[0]) |
2640 ((unsigned long)session_id
[1] << 8L) |
2641 ((unsigned long)session_id
[2] << 16L) |
2642 ((unsigned long)session_id
[3] << 24L);
2647 * NB: If this function (or indeed the hash function which uses a sort of
2648 * coarser function than this one) is changed, ensure
2649 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2650 * being able to construct an SSL_SESSION that will collide with any existing
2651 * session with a matching session ID.
2653 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2655 if (a
->ssl_version
!= b
->ssl_version
)
2657 if (a
->session_id_length
!= b
->session_id_length
)
2659 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2663 * These wrapper functions should remain rather than redeclaring
2664 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2665 * variable. The reason is that the functions aren't static, they're exposed
2669 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2671 SSL_CTX
*ret
= NULL
;
2674 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2678 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2681 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2682 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2685 ret
= OPENSSL_zalloc(sizeof(*ret
));
2690 ret
->min_proto_version
= 0;
2691 ret
->max_proto_version
= 0;
2692 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2693 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2694 /* We take the system default. */
2695 ret
->session_timeout
= meth
->get_timeout();
2696 ret
->references
= 1;
2697 ret
->lock
= CRYPTO_THREAD_lock_new();
2698 if (ret
->lock
== NULL
) {
2699 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2703 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2704 ret
->verify_mode
= SSL_VERIFY_NONE
;
2705 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2708 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2709 if (ret
->sessions
== NULL
)
2711 ret
->cert_store
= X509_STORE_new();
2712 if (ret
->cert_store
== NULL
)
2714 #ifndef OPENSSL_NO_CT
2715 ret
->ctlog_store
= CTLOG_STORE_new();
2716 if (ret
->ctlog_store
== NULL
)
2719 if (!ssl_create_cipher_list(ret
->method
,
2720 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2721 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2722 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2723 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2727 ret
->param
= X509_VERIFY_PARAM_new();
2728 if (ret
->param
== NULL
)
2731 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2732 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2735 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2736 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2740 if ((ret
->client_CA
= sk_X509_NAME_new_null()) == NULL
)
2743 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2746 /* No compression for DTLS */
2747 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2748 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2750 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2751 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2753 /* Setup RFC5077 ticket keys */
2754 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2755 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2756 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2757 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2758 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2759 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2760 ret
->options
|= SSL_OP_NO_TICKET
;
2762 #ifndef OPENSSL_NO_SRP
2763 if (!SSL_CTX_SRP_CTX_init(ret
))
2766 #ifndef OPENSSL_NO_ENGINE
2767 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2768 # define eng_strx(x) #x
2769 # define eng_str(x) eng_strx(x)
2770 /* Use specific client engine automatically... ignore errors */
2773 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2776 ENGINE_load_builtin_engines();
2777 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2779 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2785 * Default is to connect to non-RI servers. When RI is more widely
2786 * deployed might change this.
2788 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2790 * Disable compression by default to prevent CRIME. Applications can
2791 * re-enable compression by configuring
2792 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2793 * or by using the SSL_CONF library.
2795 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2797 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2800 * Default max early data is a fully loaded single record. Could be split
2801 * across multiple records in practice
2803 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2807 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2813 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2817 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2820 REF_PRINT_COUNT("SSL_CTX", ctx
);
2821 REF_ASSERT_ISNT(i
< 2);
2822 return ((i
> 1) ? 1 : 0);
2825 void SSL_CTX_free(SSL_CTX
*a
)
2832 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2833 REF_PRINT_COUNT("SSL_CTX", a
);
2836 REF_ASSERT_ISNT(i
< 0);
2838 X509_VERIFY_PARAM_free(a
->param
);
2839 dane_ctx_final(&a
->dane
);
2842 * Free internal session cache. However: the remove_cb() may reference
2843 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2844 * after the sessions were flushed.
2845 * As the ex_data handling routines might also touch the session cache,
2846 * the most secure solution seems to be: empty (flush) the cache, then
2847 * free ex_data, then finally free the cache.
2848 * (See ticket [openssl.org #212].)
2850 if (a
->sessions
!= NULL
)
2851 SSL_CTX_flush_sessions(a
, 0);
2853 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2854 lh_SSL_SESSION_free(a
->sessions
);
2855 X509_STORE_free(a
->cert_store
);
2856 #ifndef OPENSSL_NO_CT
2857 CTLOG_STORE_free(a
->ctlog_store
);
2859 sk_SSL_CIPHER_free(a
->cipher_list
);
2860 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2861 ssl_cert_free(a
->cert
);
2862 sk_X509_NAME_pop_free(a
->client_CA
, X509_NAME_free
);
2863 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2864 a
->comp_methods
= NULL
;
2865 #ifndef OPENSSL_NO_SRTP
2866 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2868 #ifndef OPENSSL_NO_SRP
2869 SSL_CTX_SRP_CTX_free(a
);
2871 #ifndef OPENSSL_NO_ENGINE
2872 ENGINE_finish(a
->client_cert_engine
);
2875 #ifndef OPENSSL_NO_EC
2876 OPENSSL_free(a
->ext
.ecpointformats
);
2877 OPENSSL_free(a
->ext
.supportedgroups
);
2879 OPENSSL_free(a
->ext
.alpn
);
2881 CRYPTO_THREAD_lock_free(a
->lock
);
2886 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2888 ctx
->default_passwd_callback
= cb
;
2891 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2893 ctx
->default_passwd_callback_userdata
= u
;
2896 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2898 return ctx
->default_passwd_callback
;
2901 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2903 return ctx
->default_passwd_callback_userdata
;
2906 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2908 s
->default_passwd_callback
= cb
;
2911 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2913 s
->default_passwd_callback_userdata
= u
;
2916 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2918 return s
->default_passwd_callback
;
2921 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2923 return s
->default_passwd_callback_userdata
;
2926 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2927 int (*cb
) (X509_STORE_CTX
*, void *),
2930 ctx
->app_verify_callback
= cb
;
2931 ctx
->app_verify_arg
= arg
;
2934 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
2935 int (*cb
) (int, X509_STORE_CTX
*))
2937 ctx
->verify_mode
= mode
;
2938 ctx
->default_verify_callback
= cb
;
2941 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
2943 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
2946 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2948 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
2951 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2953 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
2956 void ssl_set_masks(SSL
*s
)
2959 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
2960 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
2961 unsigned long mask_k
, mask_a
;
2962 #ifndef OPENSSL_NO_EC
2963 int have_ecc_cert
, ecdsa_ok
;
2968 #ifndef OPENSSL_NO_DH
2969 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
2974 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2975 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2976 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
2977 #ifndef OPENSSL_NO_EC
2978 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
2984 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
2985 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
2988 #ifndef OPENSSL_NO_GOST
2989 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
2990 mask_k
|= SSL_kGOST
;
2991 mask_a
|= SSL_aGOST12
;
2993 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
2994 mask_k
|= SSL_kGOST
;
2995 mask_a
|= SSL_aGOST12
;
2997 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
2998 mask_k
|= SSL_kGOST
;
2999 mask_a
|= SSL_aGOST01
;
3009 if (rsa_enc
|| rsa_sign
) {
3017 mask_a
|= SSL_aNULL
;
3020 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3021 * depending on the key usage extension.
3023 #ifndef OPENSSL_NO_EC
3024 if (have_ecc_cert
) {
3026 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3027 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3028 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3031 mask_a
|= SSL_aECDSA
;
3035 #ifndef OPENSSL_NO_EC
3036 mask_k
|= SSL_kECDHE
;
3039 #ifndef OPENSSL_NO_PSK
3042 if (mask_k
& SSL_kRSA
)
3043 mask_k
|= SSL_kRSAPSK
;
3044 if (mask_k
& SSL_kDHE
)
3045 mask_k
|= SSL_kDHEPSK
;
3046 if (mask_k
& SSL_kECDHE
)
3047 mask_k
|= SSL_kECDHEPSK
;
3050 s
->s3
->tmp
.mask_k
= mask_k
;
3051 s
->s3
->tmp
.mask_a
= mask_a
;
3054 #ifndef OPENSSL_NO_EC
3056 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3058 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3059 /* key usage, if present, must allow signing */
3060 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3061 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3062 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3066 return 1; /* all checks are ok */
3071 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3072 size_t *serverinfo_length
)
3074 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3075 *serverinfo_length
= 0;
3077 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3080 *serverinfo
= cpk
->serverinfo
;
3081 *serverinfo_length
= cpk
->serverinfo_length
;
3085 void ssl_update_cache(SSL
*s
, int mode
)
3090 * If the session_id_length is 0, we are not supposed to cache it, and it
3091 * would be rather hard to do anyway :-)
3093 if (s
->session
->session_id_length
== 0)
3096 i
= s
->session_ctx
->session_cache_mode
;
3097 if ((i
& mode
) && (!s
->hit
)
3098 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
)
3099 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3100 && (s
->session_ctx
->new_session_cb
!= NULL
)) {
3101 SSL_SESSION_up_ref(s
->session
);
3102 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3103 SSL_SESSION_free(s
->session
);
3106 /* auto flush every 255 connections */
3107 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3108 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3109 ? s
->session_ctx
->stats
.sess_connect_good
3110 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3111 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3116 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3121 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3126 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3130 if (s
->method
!= meth
) {
3131 const SSL_METHOD
*sm
= s
->method
;
3132 int (*hf
) (SSL
*) = s
->handshake_func
;
3134 if (sm
->version
== meth
->version
)
3139 ret
= s
->method
->ssl_new(s
);
3142 if (hf
== sm
->ssl_connect
)
3143 s
->handshake_func
= meth
->ssl_connect
;
3144 else if (hf
== sm
->ssl_accept
)
3145 s
->handshake_func
= meth
->ssl_accept
;
3150 int SSL_get_error(const SSL
*s
, int i
)
3157 return (SSL_ERROR_NONE
);
3160 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3161 * where we do encode the error
3163 if ((l
= ERR_peek_error()) != 0) {
3164 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3165 return (SSL_ERROR_SYSCALL
);
3167 return (SSL_ERROR_SSL
);
3170 if (SSL_want_read(s
)) {
3171 bio
= SSL_get_rbio(s
);
3172 if (BIO_should_read(bio
))
3173 return (SSL_ERROR_WANT_READ
);
3174 else if (BIO_should_write(bio
))
3176 * This one doesn't make too much sense ... We never try to write
3177 * to the rbio, and an application program where rbio and wbio
3178 * are separate couldn't even know what it should wait for.
3179 * However if we ever set s->rwstate incorrectly (so that we have
3180 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3181 * wbio *are* the same, this test works around that bug; so it
3182 * might be safer to keep it.
3184 return (SSL_ERROR_WANT_WRITE
);
3185 else if (BIO_should_io_special(bio
)) {
3186 reason
= BIO_get_retry_reason(bio
);
3187 if (reason
== BIO_RR_CONNECT
)
3188 return (SSL_ERROR_WANT_CONNECT
);
3189 else if (reason
== BIO_RR_ACCEPT
)
3190 return (SSL_ERROR_WANT_ACCEPT
);
3192 return (SSL_ERROR_SYSCALL
); /* unknown */
3196 if (SSL_want_write(s
)) {
3198 * Access wbio directly - in order to use the buffered bio if
3202 if (BIO_should_write(bio
))
3203 return (SSL_ERROR_WANT_WRITE
);
3204 else if (BIO_should_read(bio
))
3206 * See above (SSL_want_read(s) with BIO_should_write(bio))
3208 return (SSL_ERROR_WANT_READ
);
3209 else if (BIO_should_io_special(bio
)) {
3210 reason
= BIO_get_retry_reason(bio
);
3211 if (reason
== BIO_RR_CONNECT
)
3212 return (SSL_ERROR_WANT_CONNECT
);
3213 else if (reason
== BIO_RR_ACCEPT
)
3214 return (SSL_ERROR_WANT_ACCEPT
);
3216 return (SSL_ERROR_SYSCALL
);
3219 if (SSL_want_x509_lookup(s
))
3220 return (SSL_ERROR_WANT_X509_LOOKUP
);
3221 if (SSL_want_async(s
))
3222 return SSL_ERROR_WANT_ASYNC
;
3223 if (SSL_want_async_job(s
))
3224 return SSL_ERROR_WANT_ASYNC_JOB
;
3225 if (SSL_want_early(s
))
3226 return SSL_ERROR_WANT_EARLY
;
3228 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3229 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3230 return (SSL_ERROR_ZERO_RETURN
);
3232 return (SSL_ERROR_SYSCALL
);
3235 static int ssl_do_handshake_intern(void *vargs
)
3237 struct ssl_async_args
*args
;
3240 args
= (struct ssl_async_args
*)vargs
;
3243 return s
->handshake_func(s
);
3246 int SSL_do_handshake(SSL
*s
)
3250 if (s
->handshake_func
== NULL
) {
3251 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3255 if (s
->early_data_state
== SSL_EARLY_DATA_WRITE_RETRY
) {
3258 edfin
= ssl_write_early_finish(s
);
3262 ossl_statem_check_finish_init(s
, -1);
3264 s
->method
->ssl_renegotiate_check(s
, 0);
3266 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3267 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3268 struct ssl_async_args args
;
3272 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3274 ret
= s
->handshake_func(s
);
3280 void SSL_set_accept_state(SSL
*s
)
3284 ossl_statem_clear(s
);
3285 s
->handshake_func
= s
->method
->ssl_accept
;
3289 void SSL_set_connect_state(SSL
*s
)
3293 ossl_statem_clear(s
);
3294 s
->handshake_func
= s
->method
->ssl_connect
;
3298 int ssl_undefined_function(SSL
*s
)
3300 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3304 int ssl_undefined_void_function(void)
3306 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3307 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3311 int ssl_undefined_const_function(const SSL
*s
)
3316 const SSL_METHOD
*ssl_bad_method(int ver
)
3318 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3322 const char *ssl_protocol_to_string(int version
)
3326 case TLS1_3_VERSION
:
3329 case TLS1_2_VERSION
:
3332 case TLS1_1_VERSION
:
3347 case DTLS1_2_VERSION
:
3355 const char *SSL_get_version(const SSL
*s
)
3357 return ssl_protocol_to_string(s
->version
);
3360 SSL
*SSL_dup(SSL
*s
)
3362 STACK_OF(X509_NAME
) *sk
;
3367 /* If we're not quiescent, just up_ref! */
3368 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3369 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3374 * Otherwise, copy configuration state, and session if set.
3376 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3379 if (s
->session
!= NULL
) {
3381 * Arranges to share the same session via up_ref. This "copies"
3382 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3384 if (!SSL_copy_session_id(ret
, s
))
3388 * No session has been established yet, so we have to expect that
3389 * s->cert or ret->cert will be changed later -- they should not both
3390 * point to the same object, and thus we can't use
3391 * SSL_copy_session_id.
3393 if (!SSL_set_ssl_method(ret
, s
->method
))
3396 if (s
->cert
!= NULL
) {
3397 ssl_cert_free(ret
->cert
);
3398 ret
->cert
= ssl_cert_dup(s
->cert
);
3399 if (ret
->cert
== NULL
)
3403 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3404 (int)s
->sid_ctx_length
))
3408 if (!ssl_dane_dup(ret
, s
))
3410 ret
->version
= s
->version
;
3411 ret
->options
= s
->options
;
3412 ret
->mode
= s
->mode
;
3413 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3414 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3415 ret
->msg_callback
= s
->msg_callback
;
3416 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3417 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3418 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3419 ret
->generate_session_id
= s
->generate_session_id
;
3421 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3423 /* copy app data, a little dangerous perhaps */
3424 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3427 /* setup rbio, and wbio */
3428 if (s
->rbio
!= NULL
) {
3429 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3432 if (s
->wbio
!= NULL
) {
3433 if (s
->wbio
!= s
->rbio
) {
3434 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3437 BIO_up_ref(ret
->rbio
);
3438 ret
->wbio
= ret
->rbio
;
3442 ret
->server
= s
->server
;
3443 if (s
->handshake_func
) {
3445 SSL_set_accept_state(ret
);
3447 SSL_set_connect_state(ret
);
3449 ret
->shutdown
= s
->shutdown
;
3452 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3453 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3455 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3457 /* dup the cipher_list and cipher_list_by_id stacks */
3458 if (s
->cipher_list
!= NULL
) {
3459 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3462 if (s
->cipher_list_by_id
!= NULL
)
3463 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3467 /* Dup the client_CA list */
3468 if (s
->client_CA
!= NULL
) {
3469 if ((sk
= sk_X509_NAME_dup(s
->client_CA
)) == NULL
)
3471 ret
->client_CA
= sk
;
3472 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3473 xn
= sk_X509_NAME_value(sk
, i
);
3474 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3487 void ssl_clear_cipher_ctx(SSL
*s
)
3489 if (s
->enc_read_ctx
!= NULL
) {
3490 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3491 s
->enc_read_ctx
= NULL
;
3493 if (s
->enc_write_ctx
!= NULL
) {
3494 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3495 s
->enc_write_ctx
= NULL
;
3497 #ifndef OPENSSL_NO_COMP
3498 COMP_CTX_free(s
->expand
);
3500 COMP_CTX_free(s
->compress
);
3505 X509
*SSL_get_certificate(const SSL
*s
)
3507 if (s
->cert
!= NULL
)
3508 return (s
->cert
->key
->x509
);
3513 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3515 if (s
->cert
!= NULL
)
3516 return (s
->cert
->key
->privatekey
);
3521 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3523 if (ctx
->cert
!= NULL
)
3524 return ctx
->cert
->key
->x509
;
3529 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3531 if (ctx
->cert
!= NULL
)
3532 return ctx
->cert
->key
->privatekey
;
3537 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3539 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3540 return (s
->session
->cipher
);
3544 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3546 #ifndef OPENSSL_NO_COMP
3547 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3553 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3555 #ifndef OPENSSL_NO_COMP
3556 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3562 int ssl_init_wbio_buffer(SSL
*s
)
3566 if (s
->bbio
!= NULL
) {
3567 /* Already buffered. */
3571 bbio
= BIO_new(BIO_f_buffer());
3572 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3574 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3578 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3583 void ssl_free_wbio_buffer(SSL
*s
)
3585 /* callers ensure s is never null */
3586 if (s
->bbio
== NULL
)
3589 s
->wbio
= BIO_pop(s
->wbio
);
3590 assert(s
->wbio
!= NULL
);
3595 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3597 ctx
->quiet_shutdown
= mode
;
3600 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3602 return (ctx
->quiet_shutdown
);
3605 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3607 s
->quiet_shutdown
= mode
;
3610 int SSL_get_quiet_shutdown(const SSL
*s
)
3612 return (s
->quiet_shutdown
);
3615 void SSL_set_shutdown(SSL
*s
, int mode
)
3620 int SSL_get_shutdown(const SSL
*s
)
3625 int SSL_version(const SSL
*s
)
3630 int SSL_client_version(const SSL
*s
)
3632 return s
->client_version
;
3635 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3640 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3643 if (ssl
->ctx
== ctx
)
3646 ctx
= ssl
->session_ctx
;
3647 new_cert
= ssl_cert_dup(ctx
->cert
);
3648 if (new_cert
== NULL
) {
3651 ssl_cert_free(ssl
->cert
);
3652 ssl
->cert
= new_cert
;
3655 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3656 * so setter APIs must prevent invalid lengths from entering the system.
3658 OPENSSL_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
));
3661 * If the session ID context matches that of the parent SSL_CTX,
3662 * inherit it from the new SSL_CTX as well. If however the context does
3663 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3664 * leave it unchanged.
3666 if ((ssl
->ctx
!= NULL
) &&
3667 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3668 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3669 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3670 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3673 SSL_CTX_up_ref(ctx
);
3674 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3680 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3682 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3685 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3687 X509_LOOKUP
*lookup
;
3689 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3692 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3694 /* Clear any errors if the default directory does not exist */
3700 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3702 X509_LOOKUP
*lookup
;
3704 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3708 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3710 /* Clear any errors if the default file does not exist */
3716 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3719 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3722 void SSL_set_info_callback(SSL
*ssl
,
3723 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3725 ssl
->info_callback
= cb
;
3729 * One compiler (Diab DCC) doesn't like argument names in returned function
3732 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3735 return ssl
->info_callback
;
3738 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3740 ssl
->verify_result
= arg
;
3743 long SSL_get_verify_result(const SSL
*ssl
)
3745 return (ssl
->verify_result
);
3748 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3751 return sizeof(ssl
->s3
->client_random
);
3752 if (outlen
> sizeof(ssl
->s3
->client_random
))
3753 outlen
= sizeof(ssl
->s3
->client_random
);
3754 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3758 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3761 return sizeof(ssl
->s3
->server_random
);
3762 if (outlen
> sizeof(ssl
->s3
->server_random
))
3763 outlen
= sizeof(ssl
->s3
->server_random
);
3764 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3768 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3769 unsigned char *out
, size_t outlen
)
3772 return session
->master_key_length
;
3773 if (outlen
> session
->master_key_length
)
3774 outlen
= session
->master_key_length
;
3775 memcpy(out
, session
->master_key
, outlen
);
3779 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3781 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3784 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3786 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3789 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3791 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3794 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3796 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3799 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3801 return (ctx
->cert_store
);
3804 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3806 X509_STORE_free(ctx
->cert_store
);
3807 ctx
->cert_store
= store
;
3810 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3813 X509_STORE_up_ref(store
);
3814 SSL_CTX_set_cert_store(ctx
, store
);
3817 int SSL_want(const SSL
*s
)
3819 return (s
->rwstate
);
3823 * \brief Set the callback for generating temporary DH keys.
3824 * \param ctx the SSL context.
3825 * \param dh the callback
3828 #ifndef OPENSSL_NO_DH
3829 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3830 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3833 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3836 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3839 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3843 #ifndef OPENSSL_NO_PSK
3844 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3846 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3847 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3850 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3851 if (identity_hint
!= NULL
) {
3852 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3853 if (ctx
->cert
->psk_identity_hint
== NULL
)
3856 ctx
->cert
->psk_identity_hint
= NULL
;
3860 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3865 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3866 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3869 OPENSSL_free(s
->cert
->psk_identity_hint
);
3870 if (identity_hint
!= NULL
) {
3871 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3872 if (s
->cert
->psk_identity_hint
== NULL
)
3875 s
->cert
->psk_identity_hint
= NULL
;
3879 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3881 if (s
== NULL
|| s
->session
== NULL
)
3883 return (s
->session
->psk_identity_hint
);
3886 const char *SSL_get_psk_identity(const SSL
*s
)
3888 if (s
== NULL
|| s
->session
== NULL
)
3890 return (s
->session
->psk_identity
);
3893 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
3895 s
->psk_client_callback
= cb
;
3898 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
3900 ctx
->psk_client_callback
= cb
;
3903 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
3905 s
->psk_server_callback
= cb
;
3908 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
3910 ctx
->psk_server_callback
= cb
;
3914 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
3915 void (*cb
) (int write_p
, int version
,
3916 int content_type
, const void *buf
,
3917 size_t len
, SSL
*ssl
, void *arg
))
3919 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3922 void SSL_set_msg_callback(SSL
*ssl
,
3923 void (*cb
) (int write_p
, int version
,
3924 int content_type
, const void *buf
,
3925 size_t len
, SSL
*ssl
, void *arg
))
3927 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3930 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
3931 int (*cb
) (SSL
*ssl
,
3935 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3936 (void (*)(void))cb
);
3939 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
3940 int (*cb
) (SSL
*ssl
,
3941 int is_forward_secure
))
3943 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3944 (void (*)(void))cb
);
3948 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3949 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3950 * If EVP_MD pointer is passed, initializes ctx with this md.
3951 * Returns the newly allocated ctx;
3954 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
3956 ssl_clear_hash_ctx(hash
);
3957 *hash
= EVP_MD_CTX_new();
3958 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
3959 EVP_MD_CTX_free(*hash
);
3966 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
3969 EVP_MD_CTX_free(*hash
);
3973 /* Retrieve handshake hashes */
3974 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
3977 EVP_MD_CTX
*ctx
= NULL
;
3978 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
3979 int hashleni
= EVP_MD_CTX_size(hdgst
);
3982 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
3985 ctx
= EVP_MD_CTX_new();
3989 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
3990 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
3993 *hashlen
= hashleni
;
3997 EVP_MD_CTX_free(ctx
);
4001 int SSL_session_reused(SSL
*s
)
4006 int SSL_is_server(SSL
*s
)
4011 #if OPENSSL_API_COMPAT < 0x10100000L
4012 void SSL_set_debug(SSL
*s
, int debug
)
4014 /* Old function was do-nothing anyway... */
4020 void SSL_set_security_level(SSL
*s
, int level
)
4022 s
->cert
->sec_level
= level
;
4025 int SSL_get_security_level(const SSL
*s
)
4027 return s
->cert
->sec_level
;
4030 void SSL_set_security_callback(SSL
*s
,
4031 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4032 int op
, int bits
, int nid
,
4033 void *other
, void *ex
))
4035 s
->cert
->sec_cb
= cb
;
4038 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4039 const SSL_CTX
*ctx
, int op
,
4040 int bits
, int nid
, void *other
,
4042 return s
->cert
->sec_cb
;
4045 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4047 s
->cert
->sec_ex
= ex
;
4050 void *SSL_get0_security_ex_data(const SSL
*s
)
4052 return s
->cert
->sec_ex
;
4055 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4057 ctx
->cert
->sec_level
= level
;
4060 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4062 return ctx
->cert
->sec_level
;
4065 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4066 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4067 int op
, int bits
, int nid
,
4068 void *other
, void *ex
))
4070 ctx
->cert
->sec_cb
= cb
;
4073 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4079 return ctx
->cert
->sec_cb
;
4082 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4084 ctx
->cert
->sec_ex
= ex
;
4087 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4089 return ctx
->cert
->sec_ex
;
4093 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4094 * can return unsigned long, instead of the generic long return value from the
4095 * control interface.
4097 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4099 return ctx
->options
;
4102 unsigned long SSL_get_options(const SSL
*s
)
4107 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4109 return ctx
->options
|= op
;
4112 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4114 return s
->options
|= op
;
4117 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4119 return ctx
->options
&= ~op
;
4122 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4124 return s
->options
&= ~op
;
4127 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4129 return s
->verified_chain
;
4132 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4134 #ifndef OPENSSL_NO_CT
4137 * Moves SCTs from the |src| stack to the |dst| stack.
4138 * The source of each SCT will be set to |origin|.
4139 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4141 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4143 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4144 sct_source_t origin
)
4150 *dst
= sk_SCT_new_null();
4152 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4157 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4158 if (SCT_set_source(sct
, origin
) != 1)
4161 if (sk_SCT_push(*dst
, sct
) <= 0)
4169 sk_SCT_push(src
, sct
); /* Put the SCT back */
4174 * Look for data collected during ServerHello and parse if found.
4175 * Returns the number of SCTs extracted.
4177 static int ct_extract_tls_extension_scts(SSL
*s
)
4179 int scts_extracted
= 0;
4181 if (s
->ext
.scts
!= NULL
) {
4182 const unsigned char *p
= s
->ext
.scts
;
4183 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4185 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4187 SCT_LIST_free(scts
);
4190 return scts_extracted
;
4194 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4195 * contains an SCT X509 extension. They will be stored in |s->scts|.
4197 * - The number of SCTs extracted, assuming an OCSP response exists.
4198 * - 0 if no OCSP response exists or it contains no SCTs.
4199 * - A negative integer if an error occurs.
4201 static int ct_extract_ocsp_response_scts(SSL
*s
)
4203 # ifndef OPENSSL_NO_OCSP
4204 int scts_extracted
= 0;
4205 const unsigned char *p
;
4206 OCSP_BASICRESP
*br
= NULL
;
4207 OCSP_RESPONSE
*rsp
= NULL
;
4208 STACK_OF(SCT
) *scts
= NULL
;
4211 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4214 p
= s
->ext
.ocsp
.resp
;
4215 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4219 br
= OCSP_response_get1_basic(rsp
);
4223 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4224 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4230 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4232 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4233 if (scts_extracted
< 0)
4237 SCT_LIST_free(scts
);
4238 OCSP_BASICRESP_free(br
);
4239 OCSP_RESPONSE_free(rsp
);
4240 return scts_extracted
;
4242 /* Behave as if no OCSP response exists */
4248 * Attempts to extract SCTs from the peer certificate.
4249 * Return the number of SCTs extracted, or a negative integer if an error
4252 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4254 int scts_extracted
= 0;
4255 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4258 STACK_OF(SCT
) *scts
=
4259 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4262 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4264 SCT_LIST_free(scts
);
4267 return scts_extracted
;
4271 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4272 * response (if it exists) and X509v3 extensions in the certificate.
4273 * Returns NULL if an error occurs.
4275 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4277 if (!s
->scts_parsed
) {
4278 if (ct_extract_tls_extension_scts(s
) < 0 ||
4279 ct_extract_ocsp_response_scts(s
) < 0 ||
4280 ct_extract_x509v3_extension_scts(s
) < 0)
4290 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4291 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4296 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4297 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4299 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4302 for (i
= 0; i
< count
; ++i
) {
4303 SCT
*sct
= sk_SCT_value(scts
, i
);
4304 int status
= SCT_get_validation_status(sct
);
4306 if (status
== SCT_VALIDATION_STATUS_VALID
)
4309 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4313 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4317 * Since code exists that uses the custom extension handler for CT, look
4318 * for this and throw an error if they have already registered to use CT.
4320 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4321 TLSEXT_TYPE_signed_certificate_timestamp
))
4323 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4324 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4328 if (callback
!= NULL
) {
4330 * If we are validating CT, then we MUST accept SCTs served via OCSP
4332 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4336 s
->ct_validation_callback
= callback
;
4337 s
->ct_validation_callback_arg
= arg
;
4342 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4343 ssl_ct_validation_cb callback
, void *arg
)
4346 * Since code exists that uses the custom extension handler for CT, look for
4347 * this and throw an error if they have already registered to use CT.
4349 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4350 TLSEXT_TYPE_signed_certificate_timestamp
))
4352 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4353 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4357 ctx
->ct_validation_callback
= callback
;
4358 ctx
->ct_validation_callback_arg
= arg
;
4362 int SSL_ct_is_enabled(const SSL
*s
)
4364 return s
->ct_validation_callback
!= NULL
;
4367 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4369 return ctx
->ct_validation_callback
!= NULL
;
4372 int ssl_validate_ct(SSL
*s
)
4375 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4377 SSL_DANE
*dane
= &s
->dane
;
4378 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4379 const STACK_OF(SCT
) *scts
;
4382 * If no callback is set, the peer is anonymous, or its chain is invalid,
4383 * skip SCT validation - just return success. Applications that continue
4384 * handshakes without certificates, with unverified chains, or pinned leaf
4385 * certificates are outside the scope of the WebPKI and CT.
4387 * The above exclusions notwithstanding the vast majority of peers will
4388 * have rather ordinary certificate chains validated by typical
4389 * applications that perform certificate verification and therefore will
4390 * process SCTs when enabled.
4392 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4393 s
->verify_result
!= X509_V_OK
||
4394 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4398 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4399 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4401 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4402 switch (dane
->mtlsa
->usage
) {
4403 case DANETLS_USAGE_DANE_TA
:
4404 case DANETLS_USAGE_DANE_EE
:
4409 ctx
= CT_POLICY_EVAL_CTX_new();
4411 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4415 issuer
= sk_X509_value(s
->verified_chain
, 1);
4416 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4417 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4418 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4419 CT_POLICY_EVAL_CTX_set_time(ctx
, SSL_SESSION_get_time(SSL_get0_session(s
)));
4421 scts
= SSL_get0_peer_scts(s
);
4424 * This function returns success (> 0) only when all the SCTs are valid, 0
4425 * when some are invalid, and < 0 on various internal errors (out of
4426 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4427 * reason to abort the handshake, that decision is up to the callback.
4428 * Therefore, we error out only in the unexpected case that the return
4429 * value is negative.
4431 * XXX: One might well argue that the return value of this function is an
4432 * unfortunate design choice. Its job is only to determine the validation
4433 * status of each of the provided SCTs. So long as it correctly separates
4434 * the wheat from the chaff it should return success. Failure in this case
4435 * ought to correspond to an inability to carry out its duties.
4437 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4438 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4442 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4444 ret
= 0; /* This function returns 0 on failure */
4447 CT_POLICY_EVAL_CTX_free(ctx
);
4449 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4450 * failure return code here. Also the application may wish the complete
4451 * the handshake, and then disconnect cleanly at a higher layer, after
4452 * checking the verification status of the completed connection.
4454 * We therefore force a certificate verification failure which will be
4455 * visible via SSL_get_verify_result() and cached as part of any resumed
4458 * Note: the permissive callback is for information gathering only, always
4459 * returns success, and does not affect verification status. Only the
4460 * strict callback or a custom application-specified callback can trigger
4461 * connection failure or record a verification error.
4464 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4468 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4470 switch (validation_mode
) {
4472 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4474 case SSL_CT_VALIDATION_PERMISSIVE
:
4475 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4476 case SSL_CT_VALIDATION_STRICT
:
4477 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4481 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4483 switch (validation_mode
) {
4485 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4487 case SSL_CT_VALIDATION_PERMISSIVE
:
4488 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4489 case SSL_CT_VALIDATION_STRICT
:
4490 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4494 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4496 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4499 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4501 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4504 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4506 CTLOG_STORE_free(ctx
->ctlog_store
);
4507 ctx
->ctlog_store
= logs
;
4510 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4512 return ctx
->ctlog_store
;
4515 #endif /* OPENSSL_NO_CT */
4517 void SSL_CTX_set_early_cb(SSL_CTX
*c
, SSL_early_cb_fn cb
, void *arg
)
4520 c
->early_cb_arg
= arg
;
4523 int SSL_early_isv2(SSL
*s
)
4525 if (s
->clienthello
== NULL
)
4527 return s
->clienthello
->isv2
;
4530 unsigned int SSL_early_get0_legacy_version(SSL
*s
)
4532 if (s
->clienthello
== NULL
)
4534 return s
->clienthello
->legacy_version
;
4537 size_t SSL_early_get0_random(SSL
*s
, const unsigned char **out
)
4539 if (s
->clienthello
== NULL
)
4542 *out
= s
->clienthello
->random
;
4543 return SSL3_RANDOM_SIZE
;
4546 size_t SSL_early_get0_session_id(SSL
*s
, const unsigned char **out
)
4548 if (s
->clienthello
== NULL
)
4551 *out
= s
->clienthello
->session_id
;
4552 return s
->clienthello
->session_id_len
;
4555 size_t SSL_early_get0_ciphers(SSL
*s
, const unsigned char **out
)
4557 if (s
->clienthello
== NULL
)
4560 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4561 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4564 size_t SSL_early_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4566 if (s
->clienthello
== NULL
)
4569 *out
= s
->clienthello
->compressions
;
4570 return s
->clienthello
->compressions_len
;
4573 int SSL_early_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4579 if (s
->clienthello
== NULL
)
4581 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4582 r
= s
->clienthello
->pre_proc_exts
+ i
;
4583 if (r
->present
&& r
->type
== type
) {
4585 *out
= PACKET_data(&r
->data
);
4587 *outlen
= PACKET_remaining(&r
->data
);
4594 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4596 ctx
->keylog_callback
= cb
;
4599 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4601 return ctx
->keylog_callback
;
4604 static int nss_keylog_int(const char *prefix
,
4606 const uint8_t *parameter_1
,
4607 size_t parameter_1_len
,
4608 const uint8_t *parameter_2
,
4609 size_t parameter_2_len
)
4612 char *cursor
= NULL
;
4617 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4620 * Our output buffer will contain the following strings, rendered with
4621 * space characters in between, terminated by a NULL character: first the
4622 * prefix, then the first parameter, then the second parameter. The
4623 * meaning of each parameter depends on the specific key material being
4624 * logged. Note that the first and second parameters are encoded in
4625 * hexadecimal, so we need a buffer that is twice their lengths.
4627 prefix_len
= strlen(prefix
);
4628 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4629 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4630 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4634 strcpy(cursor
, prefix
);
4635 cursor
+= prefix_len
;
4638 for (i
= 0; i
< parameter_1_len
; i
++) {
4639 sprintf(cursor
, "%02x", parameter_1
[i
]);
4644 for (i
= 0; i
< parameter_2_len
; i
++) {
4645 sprintf(cursor
, "%02x", parameter_2
[i
]);
4650 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4656 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4657 const uint8_t *encrypted_premaster
,
4658 size_t encrypted_premaster_len
,
4659 const uint8_t *premaster
,
4660 size_t premaster_len
)
4662 if (encrypted_premaster_len
< 8) {
4663 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4667 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4668 return nss_keylog_int("RSA",
4670 encrypted_premaster
,
4676 int ssl_log_secret(SSL
*ssl
,
4678 const uint8_t *secret
,
4681 return nss_keylog_int(label
,
4683 ssl
->s3
->client_random
,
4689 #define SSLV2_CIPHER_LEN 3
4691 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4696 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4698 if (PACKET_remaining(cipher_suites
) == 0) {
4699 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4700 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4704 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4705 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4706 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4707 *al
= SSL_AD_DECODE_ERROR
;
4711 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4712 s
->s3
->tmp
.ciphers_raw
= NULL
;
4713 s
->s3
->tmp
.ciphers_rawlen
= 0;
4716 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4717 PACKET sslv2ciphers
= *cipher_suites
;
4718 unsigned int leadbyte
;
4722 * We store the raw ciphers list in SSLv3+ format so we need to do some
4723 * preprocessing to convert the list first. If there are any SSLv2 only
4724 * ciphersuites with a non-zero leading byte then we are going to
4725 * slightly over allocate because we won't store those. But that isn't a
4728 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4729 s
->s3
->tmp
.ciphers_raw
= raw
;
4731 *al
= SSL_AD_INTERNAL_ERROR
;
4734 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4735 PACKET_remaining(&sslv2ciphers
) > 0;
4736 raw
+= TLS_CIPHER_LEN
) {
4737 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4739 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4742 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4743 *al
= SSL_AD_INTERNAL_ERROR
;
4744 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4745 s
->s3
->tmp
.ciphers_raw
= NULL
;
4746 s
->s3
->tmp
.ciphers_rawlen
= 0;
4750 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4752 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4753 &s
->s3
->tmp
.ciphers_rawlen
)) {
4754 *al
= SSL_AD_INTERNAL_ERROR
;
4762 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
4763 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
4764 STACK_OF(SSL_CIPHER
) **scsvs
)
4769 if (!PACKET_buf_init(&pkt
, bytes
, len
))
4771 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
4774 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
4775 STACK_OF(SSL_CIPHER
) **skp
,
4776 STACK_OF(SSL_CIPHER
) **scsvs_out
,
4777 int sslv2format
, int *al
)
4779 const SSL_CIPHER
*c
;
4780 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
4781 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
4783 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4784 unsigned char cipher
[SSLV2_CIPHER_LEN
];
4786 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4788 if (PACKET_remaining(cipher_suites
) == 0) {
4789 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4790 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4794 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4795 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
4796 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4797 *al
= SSL_AD_DECODE_ERROR
;
4801 sk
= sk_SSL_CIPHER_new_null();
4802 scsvs
= sk_SSL_CIPHER_new_null();
4803 if (sk
== NULL
|| scsvs
== NULL
) {
4804 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4805 *al
= SSL_AD_INTERNAL_ERROR
;
4809 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
4811 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
4812 * first byte set to zero, while true SSLv2 ciphers have a non-zero
4813 * first byte. We don't support any true SSLv2 ciphers, so skip them.
4815 if (sslv2format
&& cipher
[0] != '\0')
4818 /* For SSLv2-compat, ignore leading 0-byte. */
4819 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
4821 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
4822 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
4823 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4824 *al
= SSL_AD_INTERNAL_ERROR
;
4829 if (PACKET_remaining(cipher_suites
) > 0) {
4830 *al
= SSL_AD_INTERNAL_ERROR
;
4831 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_INTERNAL_ERROR
);
4838 sk_SSL_CIPHER_free(sk
);
4839 if (scsvs_out
!= NULL
)
4842 sk_SSL_CIPHER_free(scsvs
);
4845 sk_SSL_CIPHER_free(sk
);
4846 sk_SSL_CIPHER_free(scsvs
);
4850 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
4852 ctx
->max_early_data
= max_early_data
;
4857 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
4859 return ctx
->max_early_data
;
4862 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
4864 s
->max_early_data
= max_early_data
;
4869 uint32_t SSL_get_max_early_data(const SSL_CTX
*s
)
4871 return s
->max_early_data
;