2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 * ECC cipher suite support in OpenSSL originally developed by
13 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
15 /* ====================================================================
16 * Copyright 2005 Nokia. All rights reserved.
18 * The portions of the attached software ("Contribution") is developed by
19 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
22 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
23 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
24 * support (see RFC 4279) to OpenSSL.
26 * No patent licenses or other rights except those expressly stated in
27 * the OpenSSL open source license shall be deemed granted or received
28 * expressly, by implication, estoppel, or otherwise.
30 * No assurances are provided by Nokia that the Contribution does not
31 * infringe the patent or other intellectual property rights of any third
32 * party or that the license provides you with all the necessary rights
33 * to make use of the Contribution.
35 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
36 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
37 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
38 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
45 #include <openssl/objects.h>
46 #include <openssl/lhash.h>
47 #include <openssl/x509v3.h>
48 #include <openssl/rand.h>
49 #include <openssl/ocsp.h>
50 #include <openssl/dh.h>
51 #include <openssl/engine.h>
52 #include <openssl/async.h>
53 #include <openssl/ct.h>
55 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
57 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
59 * evil casts, but these functions are only called if there's a library
62 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
63 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
64 ssl_undefined_function
,
65 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
66 ssl_undefined_function
,
67 (int (*)(SSL
*, int))ssl_undefined_function
,
68 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
69 ssl_undefined_function
,
70 NULL
, /* client_finished_label */
71 0, /* client_finished_label_len */
72 NULL
, /* server_finished_label */
73 0, /* server_finished_label_len */
74 (int (*)(int))ssl_undefined_function
,
75 (int (*)(SSL
*, unsigned char *, size_t, const char *,
76 size_t, const unsigned char *, size_t,
77 int use_context
))ssl_undefined_function
,
80 struct ssl_async_args
{
84 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
86 int (*func_read
) (SSL
*, void *, size_t, size_t *);
87 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
88 int (*func_other
) (SSL
*);
98 DANETLS_MATCHING_FULL
, 0, NID_undef
101 DANETLS_MATCHING_2256
, 1, NID_sha256
104 DANETLS_MATCHING_2512
, 2, NID_sha512
108 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
110 const EVP_MD
**mdevp
;
112 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
113 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
116 if (dctx
->mdevp
!= NULL
)
119 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
120 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
122 if (mdord
== NULL
|| mdevp
== NULL
) {
125 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
129 /* Install default entries */
130 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
133 if (dane_mds
[i
].nid
== NID_undef
||
134 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
136 mdevp
[dane_mds
[i
].mtype
] = md
;
137 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
147 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
149 OPENSSL_free(dctx
->mdevp
);
152 OPENSSL_free(dctx
->mdord
);
157 static void tlsa_free(danetls_record
*t
)
161 OPENSSL_free(t
->data
);
162 EVP_PKEY_free(t
->spki
);
166 static void dane_final(SSL_DANE
*dane
)
168 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
171 sk_X509_pop_free(dane
->certs
, X509_free
);
174 X509_free(dane
->mcert
);
182 * dane_copy - Copy dane configuration, sans verification state.
184 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
189 if (!DANETLS_ENABLED(&from
->dane
))
192 dane_final(&to
->dane
);
193 to
->dane
.flags
= from
->dane
.flags
;
194 to
->dane
.dctx
= &to
->ctx
->dane
;
195 to
->dane
.trecs
= sk_danetls_record_new_null();
197 if (to
->dane
.trecs
== NULL
) {
198 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
202 num
= sk_danetls_record_num(from
->dane
.trecs
);
203 for (i
= 0; i
< num
; ++i
) {
204 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
206 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
207 t
->data
, t
->dlen
) <= 0)
213 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
214 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
218 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
219 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
223 if (mtype
> dctx
->mdmax
) {
224 const EVP_MD
**mdevp
;
226 int n
= ((int)mtype
) + 1;
228 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
230 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
235 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
237 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
242 /* Zero-fill any gaps */
243 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
251 dctx
->mdevp
[mtype
] = md
;
252 /* Coerce ordinal of disabled matching types to 0 */
253 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
258 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
260 if (mtype
> dane
->dctx
->mdmax
)
262 return dane
->dctx
->mdevp
[mtype
];
265 static int dane_tlsa_add(SSL_DANE
*dane
,
268 uint8_t mtype
, unsigned char *data
, size_t dlen
)
271 const EVP_MD
*md
= NULL
;
272 int ilen
= (int)dlen
;
276 if (dane
->trecs
== NULL
) {
277 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
281 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
282 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
286 if (usage
> DANETLS_USAGE_LAST
) {
287 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
291 if (selector
> DANETLS_SELECTOR_LAST
) {
292 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
296 if (mtype
!= DANETLS_MATCHING_FULL
) {
297 md
= tlsa_md_get(dane
, mtype
);
299 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
304 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
305 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
309 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
313 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
314 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
319 t
->selector
= selector
;
321 t
->data
= OPENSSL_malloc(dlen
);
322 if (t
->data
== NULL
) {
324 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
327 memcpy(t
->data
, data
, dlen
);
330 /* Validate and cache full certificate or public key */
331 if (mtype
== DANETLS_MATCHING_FULL
) {
332 const unsigned char *p
= data
;
334 EVP_PKEY
*pkey
= NULL
;
337 case DANETLS_SELECTOR_CERT
:
338 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
339 dlen
!= (size_t)(p
- data
)) {
341 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
344 if (X509_get0_pubkey(cert
) == NULL
) {
346 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
350 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
356 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
357 * records that contain full certificates of trust-anchors that are
358 * not present in the wire chain. For usage PKIX-TA(0), we augment
359 * the chain with untrusted Full(0) certificates from DNS, in case
360 * they are missing from the chain.
362 if ((dane
->certs
== NULL
&&
363 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
364 !sk_X509_push(dane
->certs
, cert
)) {
365 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
372 case DANETLS_SELECTOR_SPKI
:
373 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
374 dlen
!= (size_t)(p
- data
)) {
376 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
381 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
382 * records that contain full bare keys of trust-anchors that are
383 * not present in the wire chain.
385 if (usage
== DANETLS_USAGE_DANE_TA
)
394 * Find the right insertion point for the new record.
396 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
397 * they can be processed first, as they require no chain building, and no
398 * expiration or hostname checks. Because DANE-EE(3) is numerically
399 * largest, this is accomplished via descending sort by "usage".
401 * We also sort in descending order by matching ordinal to simplify
402 * the implementation of digest agility in the verification code.
404 * The choice of order for the selector is not significant, so we
405 * use the same descending order for consistency.
407 num
= sk_danetls_record_num(dane
->trecs
);
408 for (i
= 0; i
< num
; ++i
) {
409 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
411 if (rec
->usage
> usage
)
413 if (rec
->usage
< usage
)
415 if (rec
->selector
> selector
)
417 if (rec
->selector
< selector
)
419 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
424 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
426 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
429 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
434 static void clear_ciphers(SSL
*s
)
436 /* clear the current cipher */
437 ssl_clear_cipher_ctx(s
);
438 ssl_clear_hash_ctx(&s
->read_hash
);
439 ssl_clear_hash_ctx(&s
->write_hash
);
442 int SSL_clear(SSL
*s
)
444 if (s
->method
== NULL
) {
445 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
449 if (ssl_clear_bad_session(s
)) {
450 SSL_SESSION_free(s
->session
);
458 if (s
->renegotiate
) {
459 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
463 ossl_statem_clear(s
);
465 s
->version
= s
->method
->version
;
466 s
->client_version
= s
->version
;
467 s
->rwstate
= SSL_NOTHING
;
469 BUF_MEM_free(s
->init_buf
);
474 s
->key_update
= SSL_KEY_UPDATE_NONE
;
476 /* Reset DANE verification result state */
479 X509_free(s
->dane
.mcert
);
480 s
->dane
.mcert
= NULL
;
481 s
->dane
.mtlsa
= NULL
;
483 /* Clear the verification result peername */
484 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
487 * Check to see if we were changed into a different method, if so, revert
488 * back if we are not doing session-id reuse.
490 if (!ossl_statem_get_in_handshake(s
) && (s
->session
== NULL
)
491 && (s
->method
!= s
->ctx
->method
)) {
492 s
->method
->ssl_free(s
);
493 s
->method
= s
->ctx
->method
;
494 if (!s
->method
->ssl_new(s
))
497 s
->method
->ssl_clear(s
);
499 RECORD_LAYER_clear(&s
->rlayer
);
504 /** Used to change an SSL_CTXs default SSL method type */
505 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
507 STACK_OF(SSL_CIPHER
) *sk
;
511 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
512 &(ctx
->cipher_list_by_id
),
513 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
514 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
515 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
521 SSL
*SSL_new(SSL_CTX
*ctx
)
526 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
529 if (ctx
->method
== NULL
) {
530 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
534 s
= OPENSSL_zalloc(sizeof(*s
));
538 s
->lock
= CRYPTO_THREAD_lock_new();
539 if (s
->lock
== NULL
) {
540 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
545 RECORD_LAYER_init(&s
->rlayer
, s
);
547 s
->options
= ctx
->options
;
548 s
->dane
.flags
= ctx
->dane
.flags
;
549 s
->min_proto_version
= ctx
->min_proto_version
;
550 s
->max_proto_version
= ctx
->max_proto_version
;
552 s
->max_cert_list
= ctx
->max_cert_list
;
556 * Earlier library versions used to copy the pointer to the CERT, not
557 * its contents; only when setting new parameters for the per-SSL
558 * copy, ssl_cert_new would be called (and the direct reference to
559 * the per-SSL_CTX settings would be lost, but those still were
560 * indirectly accessed for various purposes, and for that reason they
561 * used to be known as s->ctx->default_cert). Now we don't look at the
562 * SSL_CTX's CERT after having duplicated it once.
564 s
->cert
= ssl_cert_dup(ctx
->cert
);
568 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
569 s
->msg_callback
= ctx
->msg_callback
;
570 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
571 s
->verify_mode
= ctx
->verify_mode
;
572 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
573 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
574 OPENSSL_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
);
575 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
576 s
->verify_callback
= ctx
->default_verify_callback
;
577 s
->generate_session_id
= ctx
->generate_session_id
;
579 s
->param
= X509_VERIFY_PARAM_new();
580 if (s
->param
== NULL
)
582 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
583 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
584 s
->max_send_fragment
= ctx
->max_send_fragment
;
585 s
->split_send_fragment
= ctx
->split_send_fragment
;
586 s
->max_pipelines
= ctx
->max_pipelines
;
587 if (s
->max_pipelines
> 1)
588 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
589 if (ctx
->default_read_buf_len
> 0)
590 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
595 s
->ext
.debug_arg
= NULL
;
596 s
->ext
.ticket_expected
= 0;
597 s
->ext
.status_type
= ctx
->ext
.status_type
;
598 s
->ext
.status_expected
= 0;
599 s
->ext
.ocsp
.ids
= NULL
;
600 s
->ext
.ocsp
.exts
= NULL
;
601 s
->ext
.ocsp
.resp
= NULL
;
602 s
->ext
.ocsp
.resp_len
= 0;
604 s
->session_ctx
= ctx
;
605 #ifndef OPENSSL_NO_EC
606 if (ctx
->ext
.ecpointformats
) {
607 s
->ext
.ecpointformats
=
608 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
609 ctx
->ext
.ecpointformats_len
);
610 if (!s
->ext
.ecpointformats
)
612 s
->ext
.ecpointformats_len
=
613 ctx
->ext
.ecpointformats_len
;
615 if (ctx
->ext
.supportedgroups
) {
616 s
->ext
.supportedgroups
=
617 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
618 ctx
->ext
.supportedgroups_len
);
619 if (!s
->ext
.supportedgroups
)
621 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
624 #ifndef OPENSSL_NO_NEXTPROTONEG
628 if (s
->ctx
->ext
.alpn
) {
629 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
630 if (s
->ext
.alpn
== NULL
)
632 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
633 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
636 s
->verified_chain
= NULL
;
637 s
->verify_result
= X509_V_OK
;
639 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
640 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
642 s
->method
= ctx
->method
;
644 s
->key_update
= SSL_KEY_UPDATE_NONE
;
646 if (!s
->method
->ssl_new(s
))
649 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
654 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
657 #ifndef OPENSSL_NO_PSK
658 s
->psk_client_callback
= ctx
->psk_client_callback
;
659 s
->psk_server_callback
= ctx
->psk_server_callback
;
664 #ifndef OPENSSL_NO_CT
665 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
666 ctx
->ct_validation_callback_arg
))
673 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
677 int SSL_is_dtls(const SSL
*s
)
679 return SSL_IS_DTLS(s
) ? 1 : 0;
682 int SSL_up_ref(SSL
*s
)
686 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
689 REF_PRINT_COUNT("SSL", s
);
690 REF_ASSERT_ISNT(i
< 2);
691 return ((i
> 1) ? 1 : 0);
694 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
695 unsigned int sid_ctx_len
)
697 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
698 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
699 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
702 ctx
->sid_ctx_length
= sid_ctx_len
;
703 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
708 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
709 unsigned int sid_ctx_len
)
711 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
712 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
713 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
716 ssl
->sid_ctx_length
= sid_ctx_len
;
717 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
722 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
724 CRYPTO_THREAD_write_lock(ctx
->lock
);
725 ctx
->generate_session_id
= cb
;
726 CRYPTO_THREAD_unlock(ctx
->lock
);
730 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
732 CRYPTO_THREAD_write_lock(ssl
->lock
);
733 ssl
->generate_session_id
= cb
;
734 CRYPTO_THREAD_unlock(ssl
->lock
);
738 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
742 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
743 * we can "construct" a session to give us the desired check - ie. to
744 * find if there's a session in the hash table that would conflict with
745 * any new session built out of this id/id_len and the ssl_version in use
750 if (id_len
> sizeof r
.session_id
)
753 r
.ssl_version
= ssl
->version
;
754 r
.session_id_length
= id_len
;
755 memcpy(r
.session_id
, id
, id_len
);
757 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
758 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
759 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
763 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
765 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
768 int SSL_set_purpose(SSL
*s
, int purpose
)
770 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
773 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
775 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
778 int SSL_set_trust(SSL
*s
, int trust
)
780 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
783 int SSL_set1_host(SSL
*s
, const char *hostname
)
785 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
788 int SSL_add1_host(SSL
*s
, const char *hostname
)
790 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
793 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
795 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
798 const char *SSL_get0_peername(SSL
*s
)
800 return X509_VERIFY_PARAM_get0_peername(s
->param
);
803 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
805 return dane_ctx_enable(&ctx
->dane
);
808 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
810 unsigned long orig
= ctx
->dane
.flags
;
812 ctx
->dane
.flags
|= flags
;
816 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
818 unsigned long orig
= ctx
->dane
.flags
;
820 ctx
->dane
.flags
&= ~flags
;
824 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
826 SSL_DANE
*dane
= &s
->dane
;
828 if (s
->ctx
->dane
.mdmax
== 0) {
829 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
832 if (dane
->trecs
!= NULL
) {
833 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
838 * Default SNI name. This rejects empty names, while set1_host below
839 * accepts them and disables host name checks. To avoid side-effects with
840 * invalid input, set the SNI name first.
842 if (s
->ext
.hostname
== NULL
) {
843 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
844 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
849 /* Primary RFC6125 reference identifier */
850 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
851 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
857 dane
->dctx
= &s
->ctx
->dane
;
858 dane
->trecs
= sk_danetls_record_new_null();
860 if (dane
->trecs
== NULL
) {
861 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
867 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
869 unsigned long orig
= ssl
->dane
.flags
;
871 ssl
->dane
.flags
|= flags
;
875 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
877 unsigned long orig
= ssl
->dane
.flags
;
879 ssl
->dane
.flags
&= ~flags
;
883 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
885 SSL_DANE
*dane
= &s
->dane
;
887 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
891 *mcert
= dane
->mcert
;
893 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
898 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
899 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
901 SSL_DANE
*dane
= &s
->dane
;
903 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
907 *usage
= dane
->mtlsa
->usage
;
909 *selector
= dane
->mtlsa
->selector
;
911 *mtype
= dane
->mtlsa
->mtype
;
913 *data
= dane
->mtlsa
->data
;
915 *dlen
= dane
->mtlsa
->dlen
;
920 SSL_DANE
*SSL_get0_dane(SSL
*s
)
925 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
926 uint8_t mtype
, unsigned char *data
, size_t dlen
)
928 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
931 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
934 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
937 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
939 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
942 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
944 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
947 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
952 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
957 void SSL_certs_clear(SSL
*s
)
959 ssl_cert_clear_certs(s
->cert
);
962 void SSL_free(SSL
*s
)
969 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
970 REF_PRINT_COUNT("SSL", s
);
973 REF_ASSERT_ISNT(i
< 0);
975 X509_VERIFY_PARAM_free(s
->param
);
976 dane_final(&s
->dane
);
977 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
979 ssl_free_wbio_buffer(s
);
981 BIO_free_all(s
->wbio
);
982 BIO_free_all(s
->rbio
);
984 BUF_MEM_free(s
->init_buf
);
986 /* add extra stuff */
987 sk_SSL_CIPHER_free(s
->cipher_list
);
988 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
990 /* Make the next call work :-) */
991 if (s
->session
!= NULL
) {
992 ssl_clear_bad_session(s
);
993 SSL_SESSION_free(s
->session
);
998 ssl_cert_free(s
->cert
);
999 /* Free up if allocated */
1001 OPENSSL_free(s
->ext
.hostname
);
1002 SSL_CTX_free(s
->session_ctx
);
1003 #ifndef OPENSSL_NO_EC
1004 OPENSSL_free(s
->ext
.ecpointformats
);
1005 OPENSSL_free(s
->ext
.supportedgroups
);
1006 #endif /* OPENSSL_NO_EC */
1007 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1008 #ifndef OPENSSL_NO_OCSP
1009 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1011 #ifndef OPENSSL_NO_CT
1012 SCT_LIST_free(s
->scts
);
1013 OPENSSL_free(s
->ext
.scts
);
1015 OPENSSL_free(s
->ext
.ocsp
.resp
);
1016 OPENSSL_free(s
->ext
.alpn
);
1017 OPENSSL_free(s
->clienthello
);
1019 sk_X509_NAME_pop_free(s
->client_CA
, X509_NAME_free
);
1021 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1023 if (s
->method
!= NULL
)
1024 s
->method
->ssl_free(s
);
1026 RECORD_LAYER_release(&s
->rlayer
);
1028 SSL_CTX_free(s
->ctx
);
1030 ASYNC_WAIT_CTX_free(s
->waitctx
);
1032 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1033 OPENSSL_free(s
->ext
.npn
);
1036 #ifndef OPENSSL_NO_SRTP
1037 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1040 CRYPTO_THREAD_lock_free(s
->lock
);
1045 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1047 BIO_free_all(s
->rbio
);
1051 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1054 * If the output buffering BIO is still in place, remove it
1056 if (s
->bbio
!= NULL
)
1057 s
->wbio
= BIO_pop(s
->wbio
);
1059 BIO_free_all(s
->wbio
);
1062 /* Re-attach |bbio| to the new |wbio|. */
1063 if (s
->bbio
!= NULL
)
1064 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1067 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1070 * For historical reasons, this function has many different cases in
1071 * ownership handling.
1074 /* If nothing has changed, do nothing */
1075 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1079 * If the two arguments are equal then one fewer reference is granted by the
1080 * caller than we want to take
1082 if (rbio
!= NULL
&& rbio
== wbio
)
1086 * If only the wbio is changed only adopt one reference.
1088 if (rbio
== SSL_get_rbio(s
)) {
1089 SSL_set0_wbio(s
, wbio
);
1093 * There is an asymmetry here for historical reasons. If only the rbio is
1094 * changed AND the rbio and wbio were originally different, then we only
1095 * adopt one reference.
1097 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1098 SSL_set0_rbio(s
, rbio
);
1102 /* Otherwise, adopt both references. */
1103 SSL_set0_rbio(s
, rbio
);
1104 SSL_set0_wbio(s
, wbio
);
1107 BIO
*SSL_get_rbio(const SSL
*s
)
1112 BIO
*SSL_get_wbio(const SSL
*s
)
1114 if (s
->bbio
!= NULL
) {
1116 * If |bbio| is active, the true caller-configured BIO is its
1119 return BIO_next(s
->bbio
);
1124 int SSL_get_fd(const SSL
*s
)
1126 return SSL_get_rfd(s
);
1129 int SSL_get_rfd(const SSL
*s
)
1134 b
= SSL_get_rbio(s
);
1135 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1137 BIO_get_fd(r
, &ret
);
1141 int SSL_get_wfd(const SSL
*s
)
1146 b
= SSL_get_wbio(s
);
1147 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1149 BIO_get_fd(r
, &ret
);
1153 #ifndef OPENSSL_NO_SOCK
1154 int SSL_set_fd(SSL
*s
, int fd
)
1159 bio
= BIO_new(BIO_s_socket());
1162 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1165 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1166 SSL_set_bio(s
, bio
, bio
);
1172 int SSL_set_wfd(SSL
*s
, int fd
)
1174 BIO
*rbio
= SSL_get_rbio(s
);
1176 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1177 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1178 BIO
*bio
= BIO_new(BIO_s_socket());
1181 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1184 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1185 SSL_set0_wbio(s
, bio
);
1188 SSL_set0_wbio(s
, rbio
);
1193 int SSL_set_rfd(SSL
*s
, int fd
)
1195 BIO
*wbio
= SSL_get_wbio(s
);
1197 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1198 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1199 BIO
*bio
= BIO_new(BIO_s_socket());
1202 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1205 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1206 SSL_set0_rbio(s
, bio
);
1209 SSL_set0_rbio(s
, wbio
);
1216 /* return length of latest Finished message we sent, copy to 'buf' */
1217 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1221 if (s
->s3
!= NULL
) {
1222 ret
= s
->s3
->tmp
.finish_md_len
;
1225 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1230 /* return length of latest Finished message we expected, copy to 'buf' */
1231 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1235 if (s
->s3
!= NULL
) {
1236 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1239 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1244 int SSL_get_verify_mode(const SSL
*s
)
1246 return (s
->verify_mode
);
1249 int SSL_get_verify_depth(const SSL
*s
)
1251 return X509_VERIFY_PARAM_get_depth(s
->param
);
1254 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1255 return (s
->verify_callback
);
1258 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1260 return (ctx
->verify_mode
);
1263 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1265 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1268 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1269 return (ctx
->default_verify_callback
);
1272 void SSL_set_verify(SSL
*s
, int mode
,
1273 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1275 s
->verify_mode
= mode
;
1276 if (callback
!= NULL
)
1277 s
->verify_callback
= callback
;
1280 void SSL_set_verify_depth(SSL
*s
, int depth
)
1282 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1285 void SSL_set_read_ahead(SSL
*s
, int yes
)
1287 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1290 int SSL_get_read_ahead(const SSL
*s
)
1292 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1295 int SSL_pending(const SSL
*s
)
1297 size_t pending
= s
->method
->ssl_pending(s
);
1300 * SSL_pending cannot work properly if read-ahead is enabled
1301 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1302 * impossible to fix since SSL_pending cannot report errors that may be
1303 * observed while scanning the new data. (Note that SSL_pending() is
1304 * often used as a boolean value, so we'd better not return -1.)
1306 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1307 * we just return INT_MAX.
1309 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1312 int SSL_has_pending(const SSL
*s
)
1315 * Similar to SSL_pending() but returns a 1 to indicate that we have
1316 * unprocessed data available or 0 otherwise (as opposed to the number of
1317 * bytes available). Unlike SSL_pending() this will take into account
1318 * read_ahead data. A 1 return simply indicates that we have unprocessed
1319 * data. That data may not result in any application data, or we may fail
1320 * to parse the records for some reason.
1325 return RECORD_LAYER_read_pending(&s
->rlayer
);
1328 X509
*SSL_get_peer_certificate(const SSL
*s
)
1332 if ((s
== NULL
) || (s
->session
== NULL
))
1335 r
= s
->session
->peer
;
1345 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1349 if ((s
== NULL
) || (s
->session
== NULL
))
1352 r
= s
->session
->peer_chain
;
1355 * If we are a client, cert_chain includes the peer's own certificate; if
1356 * we are a server, it does not.
1363 * Now in theory, since the calling process own 't' it should be safe to
1364 * modify. We need to be able to read f without being hassled
1366 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1369 /* Do we need to to SSL locking? */
1370 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1375 * what if we are setup for one protocol version but want to talk another
1377 if (t
->method
!= f
->method
) {
1378 t
->method
->ssl_free(t
);
1379 t
->method
= f
->method
;
1380 if (t
->method
->ssl_new(t
) == 0)
1384 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1385 ssl_cert_free(t
->cert
);
1387 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1394 /* Fix this so it checks all the valid key/cert options */
1395 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1397 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1398 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1401 if (ctx
->cert
->key
->privatekey
== NULL
) {
1402 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1405 return (X509_check_private_key
1406 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1409 /* Fix this function so that it takes an optional type parameter */
1410 int SSL_check_private_key(const SSL
*ssl
)
1413 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1416 if (ssl
->cert
->key
->x509
== NULL
) {
1417 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1420 if (ssl
->cert
->key
->privatekey
== NULL
) {
1421 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1424 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1425 ssl
->cert
->key
->privatekey
));
1428 int SSL_waiting_for_async(SSL
*s
)
1436 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1438 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1442 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1445 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1446 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1448 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1452 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1456 int SSL_accept(SSL
*s
)
1458 if (s
->handshake_func
== NULL
) {
1459 /* Not properly initialized yet */
1460 SSL_set_accept_state(s
);
1463 return SSL_do_handshake(s
);
1466 int SSL_connect(SSL
*s
)
1468 if (s
->handshake_func
== NULL
) {
1469 /* Not properly initialized yet */
1470 SSL_set_connect_state(s
);
1473 return SSL_do_handshake(s
);
1476 long SSL_get_default_timeout(const SSL
*s
)
1478 return (s
->method
->get_timeout());
1481 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1482 int (*func
) (void *))
1485 if (s
->waitctx
== NULL
) {
1486 s
->waitctx
= ASYNC_WAIT_CTX_new();
1487 if (s
->waitctx
== NULL
)
1490 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1491 sizeof(struct ssl_async_args
))) {
1493 s
->rwstate
= SSL_NOTHING
;
1494 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1497 s
->rwstate
= SSL_ASYNC_PAUSED
;
1500 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1506 s
->rwstate
= SSL_NOTHING
;
1507 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1508 /* Shouldn't happen */
1513 static int ssl_io_intern(void *vargs
)
1515 struct ssl_async_args
*args
;
1520 args
= (struct ssl_async_args
*)vargs
;
1524 switch (args
->type
) {
1526 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1528 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1530 return args
->f
.func_other(s
);
1535 int SSL_read(SSL
*s
, void *buf
, int num
)
1541 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1545 ret
= SSL_read_ex(s
, buf
, (size_t)num
, &readbytes
);
1548 * The cast is safe here because ret should be <= INT_MAX because num is
1552 ret
= (int)readbytes
;
1557 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1559 if (s
->handshake_func
== NULL
) {
1560 SSLerr(SSL_F_SSL_READ_EX
, SSL_R_UNINITIALIZED
);
1564 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1565 s
->rwstate
= SSL_NOTHING
;
1569 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1570 struct ssl_async_args args
;
1576 args
.type
= READFUNC
;
1577 args
.f
.func_read
= s
->method
->ssl_read
;
1579 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1580 *readbytes
= s
->asyncrw
;
1583 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1587 int SSL_peek(SSL
*s
, void *buf
, int num
)
1593 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1597 ret
= SSL_peek_ex(s
, buf
, (size_t)num
, &readbytes
);
1600 * The cast is safe here because ret should be <= INT_MAX because num is
1604 ret
= (int)readbytes
;
1609 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1611 if (s
->handshake_func
== NULL
) {
1612 SSLerr(SSL_F_SSL_PEEK_EX
, SSL_R_UNINITIALIZED
);
1616 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1619 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1620 struct ssl_async_args args
;
1626 args
.type
= READFUNC
;
1627 args
.f
.func_read
= s
->method
->ssl_peek
;
1629 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1630 *readbytes
= s
->asyncrw
;
1633 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1637 int SSL_write(SSL
*s
, const void *buf
, int num
)
1643 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1647 ret
= SSL_write_ex(s
, buf
, (size_t)num
, &written
);
1650 * The cast is safe here because ret should be <= INT_MAX because num is
1659 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1661 if (s
->handshake_func
== NULL
) {
1662 SSLerr(SSL_F_SSL_WRITE_EX
, SSL_R_UNINITIALIZED
);
1666 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1667 s
->rwstate
= SSL_NOTHING
;
1668 SSLerr(SSL_F_SSL_WRITE_EX
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1672 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1674 struct ssl_async_args args
;
1677 args
.buf
= (void *)buf
;
1679 args
.type
= WRITEFUNC
;
1680 args
.f
.func_write
= s
->method
->ssl_write
;
1682 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1683 *written
= s
->asyncrw
;
1686 return s
->method
->ssl_write(s
, buf
, num
, written
);
1690 int SSL_shutdown(SSL
*s
)
1693 * Note that this function behaves differently from what one might
1694 * expect. Return values are 0 for no success (yet), 1 for success; but
1695 * calling it once is usually not enough, even if blocking I/O is used
1696 * (see ssl3_shutdown).
1699 if (s
->handshake_func
== NULL
) {
1700 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1704 if (!SSL_in_init(s
)) {
1705 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1706 struct ssl_async_args args
;
1709 args
.type
= OTHERFUNC
;
1710 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1712 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1714 return s
->method
->ssl_shutdown(s
);
1717 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1722 int SSL_key_update(SSL
*s
, int updatetype
)
1725 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1726 * negotiated, and that it is appropriate to call SSL_key_update() instead
1727 * of SSL_renegotiate().
1729 if (!SSL_IS_TLS13(s
)) {
1730 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
1734 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
1735 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
1736 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
1740 if (!SSL_is_init_finished(s
)) {
1741 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
1745 ossl_statem_set_in_init(s
, 1);
1746 s
->key_update
= updatetype
;
1750 int SSL_get_key_update_type(SSL
*s
)
1752 return s
->key_update
;
1755 int SSL_renegotiate(SSL
*s
)
1757 if (SSL_IS_TLS13(s
)) {
1758 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
1762 if (s
->renegotiate
== 0)
1767 return (s
->method
->ssl_renegotiate(s
));
1770 int SSL_renegotiate_abbreviated(SSL
*s
)
1772 if (SSL_IS_TLS13(s
))
1775 if (s
->renegotiate
== 0)
1780 return (s
->method
->ssl_renegotiate(s
));
1783 int SSL_renegotiate_pending(SSL
*s
)
1786 * becomes true when negotiation is requested; false again once a
1787 * handshake has finished
1789 return (s
->renegotiate
!= 0);
1792 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
1797 case SSL_CTRL_GET_READ_AHEAD
:
1798 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
1799 case SSL_CTRL_SET_READ_AHEAD
:
1800 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1801 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
1804 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1805 s
->msg_callback_arg
= parg
;
1809 return (s
->mode
|= larg
);
1810 case SSL_CTRL_CLEAR_MODE
:
1811 return (s
->mode
&= ~larg
);
1812 case SSL_CTRL_GET_MAX_CERT_LIST
:
1813 return (long)(s
->max_cert_list
);
1814 case SSL_CTRL_SET_MAX_CERT_LIST
:
1817 l
= (long)s
->max_cert_list
;
1818 s
->max_cert_list
= (size_t)larg
;
1820 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1821 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1823 s
->max_send_fragment
= larg
;
1824 if (s
->max_send_fragment
< s
->split_send_fragment
)
1825 s
->split_send_fragment
= s
->max_send_fragment
;
1827 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
1828 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
1830 s
->split_send_fragment
= larg
;
1832 case SSL_CTRL_SET_MAX_PIPELINES
:
1833 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
1835 s
->max_pipelines
= larg
;
1837 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
1839 case SSL_CTRL_GET_RI_SUPPORT
:
1841 return s
->s3
->send_connection_binding
;
1844 case SSL_CTRL_CERT_FLAGS
:
1845 return (s
->cert
->cert_flags
|= larg
);
1846 case SSL_CTRL_CLEAR_CERT_FLAGS
:
1847 return (s
->cert
->cert_flags
&= ~larg
);
1849 case SSL_CTRL_GET_RAW_CIPHERLIST
:
1851 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
1853 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
1854 return (int)s
->s3
->tmp
.ciphers_rawlen
;
1856 return TLS_CIPHER_LEN
;
1858 case SSL_CTRL_GET_EXTMS_SUPPORT
:
1859 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
1861 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
1865 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
1866 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
1867 &s
->min_proto_version
);
1868 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
1869 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
1870 &s
->max_proto_version
);
1872 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
1876 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
1879 case SSL_CTRL_SET_MSG_CALLBACK
:
1880 s
->msg_callback
= (void (*)
1881 (int write_p
, int version
, int content_type
,
1882 const void *buf
, size_t len
, SSL
*ssl
,
1887 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
1891 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
1893 return ctx
->sessions
;
1896 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
1899 /* For some cases with ctx == NULL perform syntax checks */
1902 #ifndef OPENSSL_NO_EC
1903 case SSL_CTRL_SET_GROUPS_LIST
:
1904 return tls1_set_groups_list(NULL
, NULL
, parg
);
1906 case SSL_CTRL_SET_SIGALGS_LIST
:
1907 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
1908 return tls1_set_sigalgs_list(NULL
, parg
, 0);
1915 case SSL_CTRL_GET_READ_AHEAD
:
1916 return (ctx
->read_ahead
);
1917 case SSL_CTRL_SET_READ_AHEAD
:
1918 l
= ctx
->read_ahead
;
1919 ctx
->read_ahead
= larg
;
1922 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1923 ctx
->msg_callback_arg
= parg
;
1926 case SSL_CTRL_GET_MAX_CERT_LIST
:
1927 return (long)(ctx
->max_cert_list
);
1928 case SSL_CTRL_SET_MAX_CERT_LIST
:
1931 l
= (long)ctx
->max_cert_list
;
1932 ctx
->max_cert_list
= (size_t)larg
;
1935 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
1938 l
= (long)ctx
->session_cache_size
;
1939 ctx
->session_cache_size
= (size_t)larg
;
1941 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
1942 return (long)(ctx
->session_cache_size
);
1943 case SSL_CTRL_SET_SESS_CACHE_MODE
:
1944 l
= ctx
->session_cache_mode
;
1945 ctx
->session_cache_mode
= larg
;
1947 case SSL_CTRL_GET_SESS_CACHE_MODE
:
1948 return (ctx
->session_cache_mode
);
1950 case SSL_CTRL_SESS_NUMBER
:
1951 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
1952 case SSL_CTRL_SESS_CONNECT
:
1953 return (ctx
->stats
.sess_connect
);
1954 case SSL_CTRL_SESS_CONNECT_GOOD
:
1955 return (ctx
->stats
.sess_connect_good
);
1956 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
1957 return (ctx
->stats
.sess_connect_renegotiate
);
1958 case SSL_CTRL_SESS_ACCEPT
:
1959 return (ctx
->stats
.sess_accept
);
1960 case SSL_CTRL_SESS_ACCEPT_GOOD
:
1961 return (ctx
->stats
.sess_accept_good
);
1962 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
1963 return (ctx
->stats
.sess_accept_renegotiate
);
1964 case SSL_CTRL_SESS_HIT
:
1965 return (ctx
->stats
.sess_hit
);
1966 case SSL_CTRL_SESS_CB_HIT
:
1967 return (ctx
->stats
.sess_cb_hit
);
1968 case SSL_CTRL_SESS_MISSES
:
1969 return (ctx
->stats
.sess_miss
);
1970 case SSL_CTRL_SESS_TIMEOUTS
:
1971 return (ctx
->stats
.sess_timeout
);
1972 case SSL_CTRL_SESS_CACHE_FULL
:
1973 return (ctx
->stats
.sess_cache_full
);
1975 return (ctx
->mode
|= larg
);
1976 case SSL_CTRL_CLEAR_MODE
:
1977 return (ctx
->mode
&= ~larg
);
1978 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1979 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1981 ctx
->max_send_fragment
= larg
;
1982 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
1983 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
1985 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
1986 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
1988 ctx
->split_send_fragment
= larg
;
1990 case SSL_CTRL_SET_MAX_PIPELINES
:
1991 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
1993 ctx
->max_pipelines
= larg
;
1995 case SSL_CTRL_CERT_FLAGS
:
1996 return (ctx
->cert
->cert_flags
|= larg
);
1997 case SSL_CTRL_CLEAR_CERT_FLAGS
:
1998 return (ctx
->cert
->cert_flags
&= ~larg
);
1999 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2000 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2001 &ctx
->min_proto_version
);
2002 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2003 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2004 &ctx
->max_proto_version
);
2006 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2010 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2013 case SSL_CTRL_SET_MSG_CALLBACK
:
2014 ctx
->msg_callback
= (void (*)
2015 (int write_p
, int version
, int content_type
,
2016 const void *buf
, size_t len
, SSL
*ssl
,
2021 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2025 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2034 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2035 const SSL_CIPHER
*const *bp
)
2037 if ((*ap
)->id
> (*bp
)->id
)
2039 if ((*ap
)->id
< (*bp
)->id
)
2044 /** return a STACK of the ciphers available for the SSL and in order of
2046 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2049 if (s
->cipher_list
!= NULL
) {
2050 return (s
->cipher_list
);
2051 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2052 return (s
->ctx
->cipher_list
);
2058 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2060 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2062 return s
->session
->ciphers
;
2065 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2067 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2069 ciphers
= SSL_get_ciphers(s
);
2072 ssl_set_client_disabled(s
);
2073 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2074 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2075 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
)) {
2077 sk
= sk_SSL_CIPHER_new_null();
2080 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2081 sk_SSL_CIPHER_free(sk
);
2089 /** return a STACK of the ciphers available for the SSL and in order of
2091 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2094 if (s
->cipher_list_by_id
!= NULL
) {
2095 return (s
->cipher_list_by_id
);
2096 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2097 return (s
->ctx
->cipher_list_by_id
);
2103 /** The old interface to get the same thing as SSL_get_ciphers() */
2104 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2106 const SSL_CIPHER
*c
;
2107 STACK_OF(SSL_CIPHER
) *sk
;
2111 sk
= SSL_get_ciphers(s
);
2112 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2114 c
= sk_SSL_CIPHER_value(sk
, n
);
2120 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2122 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2125 return ctx
->cipher_list
;
2129 /** specify the ciphers to be used by default by the SSL_CTX */
2130 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2132 STACK_OF(SSL_CIPHER
) *sk
;
2134 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2135 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2137 * ssl_create_cipher_list may return an empty stack if it was unable to
2138 * find a cipher matching the given rule string (for example if the rule
2139 * string specifies a cipher which has been disabled). This is not an
2140 * error as far as ssl_create_cipher_list is concerned, and hence
2141 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2145 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2146 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2152 /** specify the ciphers to be used by the SSL */
2153 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2155 STACK_OF(SSL_CIPHER
) *sk
;
2157 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2158 &s
->cipher_list_by_id
, str
, s
->cert
);
2159 /* see comment in SSL_CTX_set_cipher_list */
2162 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2163 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2169 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2172 STACK_OF(SSL_CIPHER
) *sk
;
2173 const SSL_CIPHER
*c
;
2176 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2180 sk
= s
->session
->ciphers
;
2182 if (sk_SSL_CIPHER_num(sk
) == 0)
2185 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2188 c
= sk_SSL_CIPHER_value(sk
, i
);
2189 n
= strlen(c
->name
);
2196 memcpy(p
, c
->name
, n
+ 1);
2205 /** return a servername extension value if provided in Client Hello, or NULL.
2206 * So far, only host_name types are defined (RFC 3546).
2209 const char *SSL_get_servername(const SSL
*s
, const int type
)
2211 if (type
!= TLSEXT_NAMETYPE_host_name
)
2214 return s
->session
&& !s
->ext
.hostname
?
2215 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2218 int SSL_get_servername_type(const SSL
*s
)
2221 && (!s
->ext
.hostname
? s
->session
->
2222 ext
.hostname
: s
->ext
.hostname
))
2223 return TLSEXT_NAMETYPE_host_name
;
2228 * SSL_select_next_proto implements the standard protocol selection. It is
2229 * expected that this function is called from the callback set by
2230 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2231 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2232 * not included in the length. A byte string of length 0 is invalid. No byte
2233 * string may be truncated. The current, but experimental algorithm for
2234 * selecting the protocol is: 1) If the server doesn't support NPN then this
2235 * is indicated to the callback. In this case, the client application has to
2236 * abort the connection or have a default application level protocol. 2) If
2237 * the server supports NPN, but advertises an empty list then the client
2238 * selects the first protocol in its list, but indicates via the API that this
2239 * fallback case was enacted. 3) Otherwise, the client finds the first
2240 * protocol in the server's list that it supports and selects this protocol.
2241 * This is because it's assumed that the server has better information about
2242 * which protocol a client should use. 4) If the client doesn't support any
2243 * of the server's advertised protocols, then this is treated the same as
2244 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2245 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2247 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2248 const unsigned char *server
,
2249 unsigned int server_len
,
2250 const unsigned char *client
, unsigned int client_len
)
2253 const unsigned char *result
;
2254 int status
= OPENSSL_NPN_UNSUPPORTED
;
2257 * For each protocol in server preference order, see if we support it.
2259 for (i
= 0; i
< server_len
;) {
2260 for (j
= 0; j
< client_len
;) {
2261 if (server
[i
] == client
[j
] &&
2262 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2263 /* We found a match */
2264 result
= &server
[i
];
2265 status
= OPENSSL_NPN_NEGOTIATED
;
2275 /* There's no overlap between our protocols and the server's list. */
2277 status
= OPENSSL_NPN_NO_OVERLAP
;
2280 *out
= (unsigned char *)result
+ 1;
2281 *outlen
= result
[0];
2285 #ifndef OPENSSL_NO_NEXTPROTONEG
2287 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2288 * client's requested protocol for this connection and returns 0. If the
2289 * client didn't request any protocol, then *data is set to NULL. Note that
2290 * the client can request any protocol it chooses. The value returned from
2291 * this function need not be a member of the list of supported protocols
2292 * provided by the callback.
2294 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2301 *len
= (unsigned int)s
->ext
.npn_len
;
2306 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2307 * a TLS server needs a list of supported protocols for Next Protocol
2308 * Negotiation. The returned list must be in wire format. The list is
2309 * returned by setting |out| to point to it and |outlen| to its length. This
2310 * memory will not be modified, but one should assume that the SSL* keeps a
2311 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2312 * wishes to advertise. Otherwise, no such extension will be included in the
2315 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2316 SSL_CTX_npn_advertised_cb_func cb
,
2319 ctx
->ext
.npn_advertised_cb
= cb
;
2320 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2324 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2325 * client needs to select a protocol from the server's provided list. |out|
2326 * must be set to point to the selected protocol (which may be within |in|).
2327 * The length of the protocol name must be written into |outlen|. The
2328 * server's advertised protocols are provided in |in| and |inlen|. The
2329 * callback can assume that |in| is syntactically valid. The client must
2330 * select a protocol. It is fatal to the connection if this callback returns
2331 * a value other than SSL_TLSEXT_ERR_OK.
2333 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2334 SSL_CTX_npn_select_cb_func cb
,
2337 ctx
->ext
.npn_select_cb
= cb
;
2338 ctx
->ext
.npn_select_cb_arg
= arg
;
2343 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2344 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2345 * length-prefixed strings). Returns 0 on success.
2347 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2348 unsigned int protos_len
)
2350 OPENSSL_free(ctx
->ext
.alpn
);
2351 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2352 if (ctx
->ext
.alpn
== NULL
) {
2353 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2356 ctx
->ext
.alpn_len
= protos_len
;
2362 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2363 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2364 * length-prefixed strings). Returns 0 on success.
2366 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2367 unsigned int protos_len
)
2369 OPENSSL_free(ssl
->ext
.alpn
);
2370 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2371 if (ssl
->ext
.alpn
== NULL
) {
2372 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2375 ssl
->ext
.alpn_len
= protos_len
;
2381 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2382 * called during ClientHello processing in order to select an ALPN protocol
2383 * from the client's list of offered protocols.
2385 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2386 SSL_CTX_alpn_select_cb_func cb
,
2389 ctx
->ext
.alpn_select_cb
= cb
;
2390 ctx
->ext
.alpn_select_cb_arg
= arg
;
2394 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2395 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2396 * (not including the leading length-prefix byte). If the server didn't
2397 * respond with a negotiated protocol then |*len| will be zero.
2399 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2404 *data
= ssl
->s3
->alpn_selected
;
2408 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2411 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2412 const char *label
, size_t llen
,
2413 const unsigned char *p
, size_t plen
,
2416 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2419 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2424 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2426 const unsigned char *session_id
= a
->session_id
;
2428 unsigned char tmp_storage
[4];
2430 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2431 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2432 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2433 session_id
= tmp_storage
;
2437 ((unsigned long)session_id
[0]) |
2438 ((unsigned long)session_id
[1] << 8L) |
2439 ((unsigned long)session_id
[2] << 16L) |
2440 ((unsigned long)session_id
[3] << 24L);
2445 * NB: If this function (or indeed the hash function which uses a sort of
2446 * coarser function than this one) is changed, ensure
2447 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2448 * being able to construct an SSL_SESSION that will collide with any existing
2449 * session with a matching session ID.
2451 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2453 if (a
->ssl_version
!= b
->ssl_version
)
2455 if (a
->session_id_length
!= b
->session_id_length
)
2457 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2461 * These wrapper functions should remain rather than redeclaring
2462 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2463 * variable. The reason is that the functions aren't static, they're exposed
2467 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2469 SSL_CTX
*ret
= NULL
;
2472 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2476 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2479 if (FIPS_mode() && (meth
->version
< TLS1_VERSION
)) {
2480 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE
);
2484 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2485 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2488 ret
= OPENSSL_zalloc(sizeof(*ret
));
2493 ret
->min_proto_version
= 0;
2494 ret
->max_proto_version
= 0;
2495 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2496 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2497 /* We take the system default. */
2498 ret
->session_timeout
= meth
->get_timeout();
2499 ret
->references
= 1;
2500 ret
->lock
= CRYPTO_THREAD_lock_new();
2501 if (ret
->lock
== NULL
) {
2502 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2506 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2507 ret
->verify_mode
= SSL_VERIFY_NONE
;
2508 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2511 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2512 if (ret
->sessions
== NULL
)
2514 ret
->cert_store
= X509_STORE_new();
2515 if (ret
->cert_store
== NULL
)
2517 #ifndef OPENSSL_NO_CT
2518 ret
->ctlog_store
= CTLOG_STORE_new();
2519 if (ret
->ctlog_store
== NULL
)
2522 if (!ssl_create_cipher_list(ret
->method
,
2523 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2524 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2525 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2526 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2530 ret
->param
= X509_VERIFY_PARAM_new();
2531 if (ret
->param
== NULL
)
2534 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2535 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2538 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2539 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2543 if ((ret
->client_CA
= sk_X509_NAME_new_null()) == NULL
)
2546 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2549 /* No compression for DTLS */
2550 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2551 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2553 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2554 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2556 /* Setup RFC5077 ticket keys */
2557 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2558 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2559 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2560 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2561 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2562 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2563 ret
->options
|= SSL_OP_NO_TICKET
;
2565 #ifndef OPENSSL_NO_SRP
2566 if (!SSL_CTX_SRP_CTX_init(ret
))
2569 #ifndef OPENSSL_NO_ENGINE
2570 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2571 # define eng_strx(x) #x
2572 # define eng_str(x) eng_strx(x)
2573 /* Use specific client engine automatically... ignore errors */
2576 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2579 ENGINE_load_builtin_engines();
2580 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2582 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2588 * Default is to connect to non-RI servers. When RI is more widely
2589 * deployed might change this.
2591 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2593 * Disable compression by default to prevent CRIME. Applications can
2594 * re-enable compression by configuring
2595 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2596 * or by using the SSL_CONF library.
2598 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2600 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2604 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2610 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2614 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2617 REF_PRINT_COUNT("SSL_CTX", ctx
);
2618 REF_ASSERT_ISNT(i
< 2);
2619 return ((i
> 1) ? 1 : 0);
2622 void SSL_CTX_free(SSL_CTX
*a
)
2629 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2630 REF_PRINT_COUNT("SSL_CTX", a
);
2633 REF_ASSERT_ISNT(i
< 0);
2635 X509_VERIFY_PARAM_free(a
->param
);
2636 dane_ctx_final(&a
->dane
);
2639 * Free internal session cache. However: the remove_cb() may reference
2640 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2641 * after the sessions were flushed.
2642 * As the ex_data handling routines might also touch the session cache,
2643 * the most secure solution seems to be: empty (flush) the cache, then
2644 * free ex_data, then finally free the cache.
2645 * (See ticket [openssl.org #212].)
2647 if (a
->sessions
!= NULL
)
2648 SSL_CTX_flush_sessions(a
, 0);
2650 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2651 lh_SSL_SESSION_free(a
->sessions
);
2652 X509_STORE_free(a
->cert_store
);
2653 #ifndef OPENSSL_NO_CT
2654 CTLOG_STORE_free(a
->ctlog_store
);
2656 sk_SSL_CIPHER_free(a
->cipher_list
);
2657 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2658 ssl_cert_free(a
->cert
);
2659 sk_X509_NAME_pop_free(a
->client_CA
, X509_NAME_free
);
2660 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2661 a
->comp_methods
= NULL
;
2662 #ifndef OPENSSL_NO_SRTP
2663 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2665 #ifndef OPENSSL_NO_SRP
2666 SSL_CTX_SRP_CTX_free(a
);
2668 #ifndef OPENSSL_NO_ENGINE
2669 ENGINE_finish(a
->client_cert_engine
);
2672 #ifndef OPENSSL_NO_EC
2673 OPENSSL_free(a
->ext
.ecpointformats
);
2674 OPENSSL_free(a
->ext
.supportedgroups
);
2676 OPENSSL_free(a
->ext
.alpn
);
2678 CRYPTO_THREAD_lock_free(a
->lock
);
2683 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2685 ctx
->default_passwd_callback
= cb
;
2688 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2690 ctx
->default_passwd_callback_userdata
= u
;
2693 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2695 return ctx
->default_passwd_callback
;
2698 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2700 return ctx
->default_passwd_callback_userdata
;
2703 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2705 s
->default_passwd_callback
= cb
;
2708 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2710 s
->default_passwd_callback_userdata
= u
;
2713 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2715 return s
->default_passwd_callback
;
2718 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2720 return s
->default_passwd_callback_userdata
;
2723 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2724 int (*cb
) (X509_STORE_CTX
*, void *),
2727 ctx
->app_verify_callback
= cb
;
2728 ctx
->app_verify_arg
= arg
;
2731 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
2732 int (*cb
) (int, X509_STORE_CTX
*))
2734 ctx
->verify_mode
= mode
;
2735 ctx
->default_verify_callback
= cb
;
2738 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
2740 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
2743 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2745 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
2748 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2750 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
2753 void ssl_set_masks(SSL
*s
)
2756 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
2757 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
2758 unsigned long mask_k
, mask_a
;
2759 #ifndef OPENSSL_NO_EC
2760 int have_ecc_cert
, ecdsa_ok
;
2765 #ifndef OPENSSL_NO_DH
2766 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
2771 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2772 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2773 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
2774 #ifndef OPENSSL_NO_EC
2775 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
2781 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
2782 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
2785 #ifndef OPENSSL_NO_GOST
2786 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
2787 mask_k
|= SSL_kGOST
;
2788 mask_a
|= SSL_aGOST12
;
2790 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
2791 mask_k
|= SSL_kGOST
;
2792 mask_a
|= SSL_aGOST12
;
2794 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
2795 mask_k
|= SSL_kGOST
;
2796 mask_a
|= SSL_aGOST01
;
2806 if (rsa_enc
|| rsa_sign
) {
2814 mask_a
|= SSL_aNULL
;
2817 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2818 * depending on the key usage extension.
2820 #ifndef OPENSSL_NO_EC
2821 if (have_ecc_cert
) {
2823 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
2824 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
2825 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
2828 mask_a
|= SSL_aECDSA
;
2832 #ifndef OPENSSL_NO_EC
2833 mask_k
|= SSL_kECDHE
;
2836 #ifndef OPENSSL_NO_PSK
2839 if (mask_k
& SSL_kRSA
)
2840 mask_k
|= SSL_kRSAPSK
;
2841 if (mask_k
& SSL_kDHE
)
2842 mask_k
|= SSL_kDHEPSK
;
2843 if (mask_k
& SSL_kECDHE
)
2844 mask_k
|= SSL_kECDHEPSK
;
2847 s
->s3
->tmp
.mask_k
= mask_k
;
2848 s
->s3
->tmp
.mask_a
= mask_a
;
2851 #ifndef OPENSSL_NO_EC
2853 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
2855 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
2856 /* key usage, if present, must allow signing */
2857 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
2858 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
2859 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
2863 return 1; /* all checks are ok */
2868 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
2869 size_t *serverinfo_length
)
2871 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
2872 *serverinfo_length
= 0;
2874 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
2877 *serverinfo
= cpk
->serverinfo
;
2878 *serverinfo_length
= cpk
->serverinfo_length
;
2882 void ssl_update_cache(SSL
*s
, int mode
)
2887 * If the session_id_length is 0, we are not supposed to cache it, and it
2888 * would be rather hard to do anyway :-)
2890 if (s
->session
->session_id_length
== 0)
2893 i
= s
->session_ctx
->session_cache_mode
;
2894 if ((i
& mode
) && (!s
->hit
)
2895 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
)
2896 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
2897 && (s
->session_ctx
->new_session_cb
!= NULL
)) {
2898 SSL_SESSION_up_ref(s
->session
);
2899 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
2900 SSL_SESSION_free(s
->session
);
2903 /* auto flush every 255 connections */
2904 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
2905 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
2906 ? s
->session_ctx
->stats
.sess_connect_good
2907 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
2908 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
2913 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
2918 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
2923 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
2927 if (s
->method
!= meth
) {
2928 const SSL_METHOD
*sm
= s
->method
;
2929 int (*hf
) (SSL
*) = s
->handshake_func
;
2931 if (sm
->version
== meth
->version
)
2936 ret
= s
->method
->ssl_new(s
);
2939 if (hf
== sm
->ssl_connect
)
2940 s
->handshake_func
= meth
->ssl_connect
;
2941 else if (hf
== sm
->ssl_accept
)
2942 s
->handshake_func
= meth
->ssl_accept
;
2947 int SSL_get_error(const SSL
*s
, int i
)
2954 return (SSL_ERROR_NONE
);
2957 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2958 * where we do encode the error
2960 if ((l
= ERR_peek_error()) != 0) {
2961 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
2962 return (SSL_ERROR_SYSCALL
);
2964 return (SSL_ERROR_SSL
);
2967 if (SSL_want_read(s
)) {
2968 bio
= SSL_get_rbio(s
);
2969 if (BIO_should_read(bio
))
2970 return (SSL_ERROR_WANT_READ
);
2971 else if (BIO_should_write(bio
))
2973 * This one doesn't make too much sense ... We never try to write
2974 * to the rbio, and an application program where rbio and wbio
2975 * are separate couldn't even know what it should wait for.
2976 * However if we ever set s->rwstate incorrectly (so that we have
2977 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2978 * wbio *are* the same, this test works around that bug; so it
2979 * might be safer to keep it.
2981 return (SSL_ERROR_WANT_WRITE
);
2982 else if (BIO_should_io_special(bio
)) {
2983 reason
= BIO_get_retry_reason(bio
);
2984 if (reason
== BIO_RR_CONNECT
)
2985 return (SSL_ERROR_WANT_CONNECT
);
2986 else if (reason
== BIO_RR_ACCEPT
)
2987 return (SSL_ERROR_WANT_ACCEPT
);
2989 return (SSL_ERROR_SYSCALL
); /* unknown */
2993 if (SSL_want_write(s
)) {
2995 * Access wbio directly - in order to use the buffered bio if
2999 if (BIO_should_write(bio
))
3000 return (SSL_ERROR_WANT_WRITE
);
3001 else if (BIO_should_read(bio
))
3003 * See above (SSL_want_read(s) with BIO_should_write(bio))
3005 return (SSL_ERROR_WANT_READ
);
3006 else if (BIO_should_io_special(bio
)) {
3007 reason
= BIO_get_retry_reason(bio
);
3008 if (reason
== BIO_RR_CONNECT
)
3009 return (SSL_ERROR_WANT_CONNECT
);
3010 else if (reason
== BIO_RR_ACCEPT
)
3011 return (SSL_ERROR_WANT_ACCEPT
);
3013 return (SSL_ERROR_SYSCALL
);
3016 if (SSL_want_x509_lookup(s
))
3017 return (SSL_ERROR_WANT_X509_LOOKUP
);
3018 if (SSL_want_async(s
))
3019 return SSL_ERROR_WANT_ASYNC
;
3020 if (SSL_want_async_job(s
))
3021 return SSL_ERROR_WANT_ASYNC_JOB
;
3022 if (SSL_want_early(s
))
3023 return SSL_ERROR_WANT_EARLY
;
3025 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3026 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3027 return (SSL_ERROR_ZERO_RETURN
);
3029 return (SSL_ERROR_SYSCALL
);
3032 static int ssl_do_handshake_intern(void *vargs
)
3034 struct ssl_async_args
*args
;
3037 args
= (struct ssl_async_args
*)vargs
;
3040 return s
->handshake_func(s
);
3043 int SSL_do_handshake(SSL
*s
)
3047 if (s
->handshake_func
== NULL
) {
3048 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3052 s
->method
->ssl_renegotiate_check(s
, 0);
3054 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3055 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3056 struct ssl_async_args args
;
3060 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3062 ret
= s
->handshake_func(s
);
3068 void SSL_set_accept_state(SSL
*s
)
3072 ossl_statem_clear(s
);
3073 s
->handshake_func
= s
->method
->ssl_accept
;
3077 void SSL_set_connect_state(SSL
*s
)
3081 ossl_statem_clear(s
);
3082 s
->handshake_func
= s
->method
->ssl_connect
;
3086 int ssl_undefined_function(SSL
*s
)
3088 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3092 int ssl_undefined_void_function(void)
3094 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3095 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3099 int ssl_undefined_const_function(const SSL
*s
)
3104 const SSL_METHOD
*ssl_bad_method(int ver
)
3106 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3110 const char *ssl_protocol_to_string(int version
)
3114 case TLS1_3_VERSION
:
3117 case TLS1_2_VERSION
:
3120 case TLS1_1_VERSION
:
3135 case DTLS1_2_VERSION
:
3143 const char *SSL_get_version(const SSL
*s
)
3145 return ssl_protocol_to_string(s
->version
);
3148 SSL
*SSL_dup(SSL
*s
)
3150 STACK_OF(X509_NAME
) *sk
;
3155 /* If we're not quiescent, just up_ref! */
3156 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3157 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3162 * Otherwise, copy configuration state, and session if set.
3164 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3167 if (s
->session
!= NULL
) {
3169 * Arranges to share the same session via up_ref. This "copies"
3170 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3172 if (!SSL_copy_session_id(ret
, s
))
3176 * No session has been established yet, so we have to expect that
3177 * s->cert or ret->cert will be changed later -- they should not both
3178 * point to the same object, and thus we can't use
3179 * SSL_copy_session_id.
3181 if (!SSL_set_ssl_method(ret
, s
->method
))
3184 if (s
->cert
!= NULL
) {
3185 ssl_cert_free(ret
->cert
);
3186 ret
->cert
= ssl_cert_dup(s
->cert
);
3187 if (ret
->cert
== NULL
)
3191 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3192 (int)s
->sid_ctx_length
))
3196 if (!ssl_dane_dup(ret
, s
))
3198 ret
->version
= s
->version
;
3199 ret
->options
= s
->options
;
3200 ret
->mode
= s
->mode
;
3201 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3202 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3203 ret
->msg_callback
= s
->msg_callback
;
3204 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3205 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3206 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3207 ret
->generate_session_id
= s
->generate_session_id
;
3209 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3211 /* copy app data, a little dangerous perhaps */
3212 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3215 /* setup rbio, and wbio */
3216 if (s
->rbio
!= NULL
) {
3217 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3220 if (s
->wbio
!= NULL
) {
3221 if (s
->wbio
!= s
->rbio
) {
3222 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3225 BIO_up_ref(ret
->rbio
);
3226 ret
->wbio
= ret
->rbio
;
3230 ret
->server
= s
->server
;
3231 if (s
->handshake_func
) {
3233 SSL_set_accept_state(ret
);
3235 SSL_set_connect_state(ret
);
3237 ret
->shutdown
= s
->shutdown
;
3240 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3241 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3243 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3245 /* dup the cipher_list and cipher_list_by_id stacks */
3246 if (s
->cipher_list
!= NULL
) {
3247 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3250 if (s
->cipher_list_by_id
!= NULL
)
3251 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3255 /* Dup the client_CA list */
3256 if (s
->client_CA
!= NULL
) {
3257 if ((sk
= sk_X509_NAME_dup(s
->client_CA
)) == NULL
)
3259 ret
->client_CA
= sk
;
3260 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3261 xn
= sk_X509_NAME_value(sk
, i
);
3262 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3275 void ssl_clear_cipher_ctx(SSL
*s
)
3277 if (s
->enc_read_ctx
!= NULL
) {
3278 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3279 s
->enc_read_ctx
= NULL
;
3281 if (s
->enc_write_ctx
!= NULL
) {
3282 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3283 s
->enc_write_ctx
= NULL
;
3285 #ifndef OPENSSL_NO_COMP
3286 COMP_CTX_free(s
->expand
);
3288 COMP_CTX_free(s
->compress
);
3293 X509
*SSL_get_certificate(const SSL
*s
)
3295 if (s
->cert
!= NULL
)
3296 return (s
->cert
->key
->x509
);
3301 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3303 if (s
->cert
!= NULL
)
3304 return (s
->cert
->key
->privatekey
);
3309 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3311 if (ctx
->cert
!= NULL
)
3312 return ctx
->cert
->key
->x509
;
3317 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3319 if (ctx
->cert
!= NULL
)
3320 return ctx
->cert
->key
->privatekey
;
3325 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3327 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3328 return (s
->session
->cipher
);
3332 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3334 #ifndef OPENSSL_NO_COMP
3335 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3341 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3343 #ifndef OPENSSL_NO_COMP
3344 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3350 int ssl_init_wbio_buffer(SSL
*s
)
3354 if (s
->bbio
!= NULL
) {
3355 /* Already buffered. */
3359 bbio
= BIO_new(BIO_f_buffer());
3360 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3362 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3366 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3371 void ssl_free_wbio_buffer(SSL
*s
)
3373 /* callers ensure s is never null */
3374 if (s
->bbio
== NULL
)
3377 s
->wbio
= BIO_pop(s
->wbio
);
3378 assert(s
->wbio
!= NULL
);
3383 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3385 ctx
->quiet_shutdown
= mode
;
3388 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3390 return (ctx
->quiet_shutdown
);
3393 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3395 s
->quiet_shutdown
= mode
;
3398 int SSL_get_quiet_shutdown(const SSL
*s
)
3400 return (s
->quiet_shutdown
);
3403 void SSL_set_shutdown(SSL
*s
, int mode
)
3408 int SSL_get_shutdown(const SSL
*s
)
3413 int SSL_version(const SSL
*s
)
3418 int SSL_client_version(const SSL
*s
)
3420 return s
->client_version
;
3423 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3428 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3431 if (ssl
->ctx
== ctx
)
3434 ctx
= ssl
->session_ctx
;
3435 new_cert
= ssl_cert_dup(ctx
->cert
);
3436 if (new_cert
== NULL
) {
3439 ssl_cert_free(ssl
->cert
);
3440 ssl
->cert
= new_cert
;
3443 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3444 * so setter APIs must prevent invalid lengths from entering the system.
3446 OPENSSL_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
));
3449 * If the session ID context matches that of the parent SSL_CTX,
3450 * inherit it from the new SSL_CTX as well. If however the context does
3451 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3452 * leave it unchanged.
3454 if ((ssl
->ctx
!= NULL
) &&
3455 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3456 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3457 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3458 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3461 SSL_CTX_up_ref(ctx
);
3462 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3468 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3470 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3473 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3475 X509_LOOKUP
*lookup
;
3477 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3480 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3482 /* Clear any errors if the default directory does not exist */
3488 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3490 X509_LOOKUP
*lookup
;
3492 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3496 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3498 /* Clear any errors if the default file does not exist */
3504 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3507 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3510 void SSL_set_info_callback(SSL
*ssl
,
3511 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3513 ssl
->info_callback
= cb
;
3517 * One compiler (Diab DCC) doesn't like argument names in returned function
3520 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3523 return ssl
->info_callback
;
3526 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3528 ssl
->verify_result
= arg
;
3531 long SSL_get_verify_result(const SSL
*ssl
)
3533 return (ssl
->verify_result
);
3536 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3539 return sizeof(ssl
->s3
->client_random
);
3540 if (outlen
> sizeof(ssl
->s3
->client_random
))
3541 outlen
= sizeof(ssl
->s3
->client_random
);
3542 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3546 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3549 return sizeof(ssl
->s3
->server_random
);
3550 if (outlen
> sizeof(ssl
->s3
->server_random
))
3551 outlen
= sizeof(ssl
->s3
->server_random
);
3552 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3556 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3557 unsigned char *out
, size_t outlen
)
3560 return session
->master_key_length
;
3561 if (outlen
> session
->master_key_length
)
3562 outlen
= session
->master_key_length
;
3563 memcpy(out
, session
->master_key
, outlen
);
3567 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3569 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3572 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3574 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3577 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3579 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3582 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3584 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3592 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3594 return (ctx
->cert_store
);
3597 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3599 X509_STORE_free(ctx
->cert_store
);
3600 ctx
->cert_store
= store
;
3603 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3606 X509_STORE_up_ref(store
);
3607 SSL_CTX_set_cert_store(ctx
, store
);
3610 int SSL_want(const SSL
*s
)
3612 return (s
->rwstate
);
3616 * \brief Set the callback for generating temporary DH keys.
3617 * \param ctx the SSL context.
3618 * \param dh the callback
3621 #ifndef OPENSSL_NO_DH
3622 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3623 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3626 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3629 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3632 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3636 #ifndef OPENSSL_NO_PSK
3637 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3639 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3640 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3643 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3644 if (identity_hint
!= NULL
) {
3645 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3646 if (ctx
->cert
->psk_identity_hint
== NULL
)
3649 ctx
->cert
->psk_identity_hint
= NULL
;
3653 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3658 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3659 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3662 OPENSSL_free(s
->cert
->psk_identity_hint
);
3663 if (identity_hint
!= NULL
) {
3664 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3665 if (s
->cert
->psk_identity_hint
== NULL
)
3668 s
->cert
->psk_identity_hint
= NULL
;
3672 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3674 if (s
== NULL
|| s
->session
== NULL
)
3676 return (s
->session
->psk_identity_hint
);
3679 const char *SSL_get_psk_identity(const SSL
*s
)
3681 if (s
== NULL
|| s
->session
== NULL
)
3683 return (s
->session
->psk_identity
);
3686 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
3688 s
->psk_client_callback
= cb
;
3691 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
3693 ctx
->psk_client_callback
= cb
;
3696 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
3698 s
->psk_server_callback
= cb
;
3701 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
3703 ctx
->psk_server_callback
= cb
;
3707 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
3708 void (*cb
) (int write_p
, int version
,
3709 int content_type
, const void *buf
,
3710 size_t len
, SSL
*ssl
, void *arg
))
3712 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3715 void SSL_set_msg_callback(SSL
*ssl
,
3716 void (*cb
) (int write_p
, int version
,
3717 int content_type
, const void *buf
,
3718 size_t len
, SSL
*ssl
, void *arg
))
3720 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3723 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
3724 int (*cb
) (SSL
*ssl
,
3728 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3729 (void (*)(void))cb
);
3732 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
3733 int (*cb
) (SSL
*ssl
,
3734 int is_forward_secure
))
3736 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3737 (void (*)(void))cb
);
3741 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3742 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3743 * If EVP_MD pointer is passed, initializes ctx with this md.
3744 * Returns the newly allocated ctx;
3747 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
3749 ssl_clear_hash_ctx(hash
);
3750 *hash
= EVP_MD_CTX_new();
3751 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
3752 EVP_MD_CTX_free(*hash
);
3759 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
3762 EVP_MD_CTX_free(*hash
);
3766 /* Retrieve handshake hashes */
3767 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
3770 EVP_MD_CTX
*ctx
= NULL
;
3771 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
3772 int hashleni
= EVP_MD_CTX_size(hdgst
);
3775 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
3778 ctx
= EVP_MD_CTX_new();
3782 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
3783 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
3786 *hashlen
= hashleni
;
3790 EVP_MD_CTX_free(ctx
);
3794 int SSL_session_reused(SSL
*s
)
3799 int SSL_is_server(SSL
*s
)
3804 #if OPENSSL_API_COMPAT < 0x10100000L
3805 void SSL_set_debug(SSL
*s
, int debug
)
3807 /* Old function was do-nothing anyway... */
3813 void SSL_set_security_level(SSL
*s
, int level
)
3815 s
->cert
->sec_level
= level
;
3818 int SSL_get_security_level(const SSL
*s
)
3820 return s
->cert
->sec_level
;
3823 void SSL_set_security_callback(SSL
*s
,
3824 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
3825 int op
, int bits
, int nid
,
3826 void *other
, void *ex
))
3828 s
->cert
->sec_cb
= cb
;
3831 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
3832 const SSL_CTX
*ctx
, int op
,
3833 int bits
, int nid
, void *other
,
3835 return s
->cert
->sec_cb
;
3838 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
3840 s
->cert
->sec_ex
= ex
;
3843 void *SSL_get0_security_ex_data(const SSL
*s
)
3845 return s
->cert
->sec_ex
;
3848 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
3850 ctx
->cert
->sec_level
= level
;
3853 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
3855 return ctx
->cert
->sec_level
;
3858 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
3859 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
3860 int op
, int bits
, int nid
,
3861 void *other
, void *ex
))
3863 ctx
->cert
->sec_cb
= cb
;
3866 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
3872 return ctx
->cert
->sec_cb
;
3875 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
3877 ctx
->cert
->sec_ex
= ex
;
3880 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
3882 return ctx
->cert
->sec_ex
;
3886 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3887 * can return unsigned long, instead of the generic long return value from the
3888 * control interface.
3890 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
3892 return ctx
->options
;
3895 unsigned long SSL_get_options(const SSL
*s
)
3900 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
3902 return ctx
->options
|= op
;
3905 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
3907 return s
->options
|= op
;
3910 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
3912 return ctx
->options
&= ~op
;
3915 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
3917 return s
->options
&= ~op
;
3920 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
3922 return s
->verified_chain
;
3925 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
3927 #ifndef OPENSSL_NO_CT
3930 * Moves SCTs from the |src| stack to the |dst| stack.
3931 * The source of each SCT will be set to |origin|.
3932 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3934 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3936 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
3937 sct_source_t origin
)
3943 *dst
= sk_SCT_new_null();
3945 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
3950 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
3951 if (SCT_set_source(sct
, origin
) != 1)
3954 if (sk_SCT_push(*dst
, sct
) <= 0)
3962 sk_SCT_push(src
, sct
); /* Put the SCT back */
3967 * Look for data collected during ServerHello and parse if found.
3968 * Returns the number of SCTs extracted.
3970 static int ct_extract_tls_extension_scts(SSL
*s
)
3972 int scts_extracted
= 0;
3974 if (s
->ext
.scts
!= NULL
) {
3975 const unsigned char *p
= s
->ext
.scts
;
3976 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
3978 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
3980 SCT_LIST_free(scts
);
3983 return scts_extracted
;
3987 * Checks for an OCSP response and then attempts to extract any SCTs found if it
3988 * contains an SCT X509 extension. They will be stored in |s->scts|.
3990 * - The number of SCTs extracted, assuming an OCSP response exists.
3991 * - 0 if no OCSP response exists or it contains no SCTs.
3992 * - A negative integer if an error occurs.
3994 static int ct_extract_ocsp_response_scts(SSL
*s
)
3996 # ifndef OPENSSL_NO_OCSP
3997 int scts_extracted
= 0;
3998 const unsigned char *p
;
3999 OCSP_BASICRESP
*br
= NULL
;
4000 OCSP_RESPONSE
*rsp
= NULL
;
4001 STACK_OF(SCT
) *scts
= NULL
;
4004 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4007 p
= s
->ext
.ocsp
.resp
;
4008 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4012 br
= OCSP_response_get1_basic(rsp
);
4016 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4017 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4023 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4025 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4026 if (scts_extracted
< 0)
4030 SCT_LIST_free(scts
);
4031 OCSP_BASICRESP_free(br
);
4032 OCSP_RESPONSE_free(rsp
);
4033 return scts_extracted
;
4035 /* Behave as if no OCSP response exists */
4041 * Attempts to extract SCTs from the peer certificate.
4042 * Return the number of SCTs extracted, or a negative integer if an error
4045 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4047 int scts_extracted
= 0;
4048 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4051 STACK_OF(SCT
) *scts
=
4052 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4055 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4057 SCT_LIST_free(scts
);
4060 return scts_extracted
;
4064 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4065 * response (if it exists) and X509v3 extensions in the certificate.
4066 * Returns NULL if an error occurs.
4068 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4070 if (!s
->scts_parsed
) {
4071 if (ct_extract_tls_extension_scts(s
) < 0 ||
4072 ct_extract_ocsp_response_scts(s
) < 0 ||
4073 ct_extract_x509v3_extension_scts(s
) < 0)
4083 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4084 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4089 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4090 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4092 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4095 for (i
= 0; i
< count
; ++i
) {
4096 SCT
*sct
= sk_SCT_value(scts
, i
);
4097 int status
= SCT_get_validation_status(sct
);
4099 if (status
== SCT_VALIDATION_STATUS_VALID
)
4102 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4106 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4110 * Since code exists that uses the custom extension handler for CT, look
4111 * for this and throw an error if they have already registered to use CT.
4113 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4114 TLSEXT_TYPE_signed_certificate_timestamp
))
4116 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4117 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4121 if (callback
!= NULL
) {
4123 * If we are validating CT, then we MUST accept SCTs served via OCSP
4125 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4129 s
->ct_validation_callback
= callback
;
4130 s
->ct_validation_callback_arg
= arg
;
4135 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4136 ssl_ct_validation_cb callback
, void *arg
)
4139 * Since code exists that uses the custom extension handler for CT, look for
4140 * this and throw an error if they have already registered to use CT.
4142 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4143 TLSEXT_TYPE_signed_certificate_timestamp
))
4145 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4146 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4150 ctx
->ct_validation_callback
= callback
;
4151 ctx
->ct_validation_callback_arg
= arg
;
4155 int SSL_ct_is_enabled(const SSL
*s
)
4157 return s
->ct_validation_callback
!= NULL
;
4160 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4162 return ctx
->ct_validation_callback
!= NULL
;
4165 int ssl_validate_ct(SSL
*s
)
4168 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4170 SSL_DANE
*dane
= &s
->dane
;
4171 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4172 const STACK_OF(SCT
) *scts
;
4175 * If no callback is set, the peer is anonymous, or its chain is invalid,
4176 * skip SCT validation - just return success. Applications that continue
4177 * handshakes without certificates, with unverified chains, or pinned leaf
4178 * certificates are outside the scope of the WebPKI and CT.
4180 * The above exclusions notwithstanding the vast majority of peers will
4181 * have rather ordinary certificate chains validated by typical
4182 * applications that perform certificate verification and therefore will
4183 * process SCTs when enabled.
4185 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4186 s
->verify_result
!= X509_V_OK
||
4187 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4191 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4192 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4194 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4195 switch (dane
->mtlsa
->usage
) {
4196 case DANETLS_USAGE_DANE_TA
:
4197 case DANETLS_USAGE_DANE_EE
:
4202 ctx
= CT_POLICY_EVAL_CTX_new();
4204 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4208 issuer
= sk_X509_value(s
->verified_chain
, 1);
4209 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4210 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4211 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4212 CT_POLICY_EVAL_CTX_set_time(ctx
, SSL_SESSION_get_time(SSL_get0_session(s
)));
4214 scts
= SSL_get0_peer_scts(s
);
4217 * This function returns success (> 0) only when all the SCTs are valid, 0
4218 * when some are invalid, and < 0 on various internal errors (out of
4219 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4220 * reason to abort the handshake, that decision is up to the callback.
4221 * Therefore, we error out only in the unexpected case that the return
4222 * value is negative.
4224 * XXX: One might well argue that the return value of this function is an
4225 * unfortunate design choice. Its job is only to determine the validation
4226 * status of each of the provided SCTs. So long as it correctly separates
4227 * the wheat from the chaff it should return success. Failure in this case
4228 * ought to correspond to an inability to carry out its duties.
4230 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4231 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4235 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4237 ret
= 0; /* This function returns 0 on failure */
4240 CT_POLICY_EVAL_CTX_free(ctx
);
4242 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4243 * failure return code here. Also the application may wish the complete
4244 * the handshake, and then disconnect cleanly at a higher layer, after
4245 * checking the verification status of the completed connection.
4247 * We therefore force a certificate verification failure which will be
4248 * visible via SSL_get_verify_result() and cached as part of any resumed
4251 * Note: the permissive callback is for information gathering only, always
4252 * returns success, and does not affect verification status. Only the
4253 * strict callback or a custom application-specified callback can trigger
4254 * connection failure or record a verification error.
4257 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4261 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4263 switch (validation_mode
) {
4265 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4267 case SSL_CT_VALIDATION_PERMISSIVE
:
4268 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4269 case SSL_CT_VALIDATION_STRICT
:
4270 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4274 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4276 switch (validation_mode
) {
4278 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4280 case SSL_CT_VALIDATION_PERMISSIVE
:
4281 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4282 case SSL_CT_VALIDATION_STRICT
:
4283 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4287 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4289 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4292 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4294 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4297 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4299 CTLOG_STORE_free(ctx
->ctlog_store
);
4300 ctx
->ctlog_store
= logs
;
4303 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4305 return ctx
->ctlog_store
;
4308 #endif /* OPENSSL_NO_CT */
4310 void SSL_CTX_set_early_cb(SSL_CTX
*c
, SSL_early_cb_fn cb
, void *arg
)
4313 c
->early_cb_arg
= arg
;
4316 int SSL_early_isv2(SSL
*s
)
4318 if (s
->clienthello
== NULL
)
4320 return s
->clienthello
->isv2
;
4323 unsigned int SSL_early_get0_legacy_version(SSL
*s
)
4325 if (s
->clienthello
== NULL
)
4327 return s
->clienthello
->legacy_version
;
4330 size_t SSL_early_get0_random(SSL
*s
, const unsigned char **out
)
4332 if (s
->clienthello
== NULL
)
4335 *out
= s
->clienthello
->random
;
4336 return SSL3_RANDOM_SIZE
;
4339 size_t SSL_early_get0_session_id(SSL
*s
, const unsigned char **out
)
4341 if (s
->clienthello
== NULL
)
4344 *out
= s
->clienthello
->session_id
;
4345 return s
->clienthello
->session_id_len
;
4348 size_t SSL_early_get0_ciphers(SSL
*s
, const unsigned char **out
)
4350 if (s
->clienthello
== NULL
)
4353 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4354 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4357 size_t SSL_early_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4359 if (s
->clienthello
== NULL
)
4362 *out
= s
->clienthello
->compressions
;
4363 return s
->clienthello
->compressions_len
;
4366 int SSL_early_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4372 if (s
->clienthello
== NULL
)
4374 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4375 r
= s
->clienthello
->pre_proc_exts
+ i
;
4376 if (r
->present
&& r
->type
== type
) {
4378 *out
= PACKET_data(&r
->data
);
4380 *outlen
= PACKET_remaining(&r
->data
);
4387 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4389 ctx
->keylog_callback
= cb
;
4392 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4394 return ctx
->keylog_callback
;
4397 static int nss_keylog_int(const char *prefix
,
4399 const uint8_t *parameter_1
,
4400 size_t parameter_1_len
,
4401 const uint8_t *parameter_2
,
4402 size_t parameter_2_len
)
4405 char *cursor
= NULL
;
4410 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4413 * Our output buffer will contain the following strings, rendered with
4414 * space characters in between, terminated by a NULL character: first the
4415 * prefix, then the first parameter, then the second parameter. The
4416 * meaning of each parameter depends on the specific key material being
4417 * logged. Note that the first and second parameters are encoded in
4418 * hexadecimal, so we need a buffer that is twice their lengths.
4420 prefix_len
= strlen(prefix
);
4421 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4422 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4423 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4427 strcpy(cursor
, prefix
);
4428 cursor
+= prefix_len
;
4431 for (i
= 0; i
< parameter_1_len
; i
++) {
4432 sprintf(cursor
, "%02x", parameter_1
[i
]);
4437 for (i
= 0; i
< parameter_2_len
; i
++) {
4438 sprintf(cursor
, "%02x", parameter_2
[i
]);
4443 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4449 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4450 const uint8_t *encrypted_premaster
,
4451 size_t encrypted_premaster_len
,
4452 const uint8_t *premaster
,
4453 size_t premaster_len
)
4455 if (encrypted_premaster_len
< 8) {
4456 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4460 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4461 return nss_keylog_int("RSA",
4463 encrypted_premaster
,
4469 int ssl_log_secret(SSL
*ssl
,
4471 const uint8_t *secret
,
4474 return nss_keylog_int(label
,
4476 ssl
->s3
->client_random
,
4482 #define SSLV2_CIPHER_LEN 3
4484 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4489 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4491 if (PACKET_remaining(cipher_suites
) == 0) {
4492 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4493 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4497 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4498 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4499 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4500 *al
= SSL_AD_DECODE_ERROR
;
4504 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4505 s
->s3
->tmp
.ciphers_raw
= NULL
;
4506 s
->s3
->tmp
.ciphers_rawlen
= 0;
4509 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4510 PACKET sslv2ciphers
= *cipher_suites
;
4511 unsigned int leadbyte
;
4515 * We store the raw ciphers list in SSLv3+ format so we need to do some
4516 * preprocessing to convert the list first. If there are any SSLv2 only
4517 * ciphersuites with a non-zero leading byte then we are going to
4518 * slightly over allocate because we won't store those. But that isn't a
4521 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4522 s
->s3
->tmp
.ciphers_raw
= raw
;
4524 *al
= SSL_AD_INTERNAL_ERROR
;
4527 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4528 PACKET_remaining(&sslv2ciphers
) > 0;
4529 raw
+= TLS_CIPHER_LEN
) {
4530 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4532 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4535 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4536 *al
= SSL_AD_INTERNAL_ERROR
;
4537 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4538 s
->s3
->tmp
.ciphers_raw
= NULL
;
4539 s
->s3
->tmp
.ciphers_rawlen
= 0;
4543 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4545 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4546 &s
->s3
->tmp
.ciphers_rawlen
)) {
4547 *al
= SSL_AD_INTERNAL_ERROR
;
4555 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
4556 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
4557 STACK_OF(SSL_CIPHER
) **scsvs
)
4562 if (!PACKET_buf_init(&pkt
, bytes
, len
))
4564 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
4567 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
4568 STACK_OF(SSL_CIPHER
) **skp
,
4569 STACK_OF(SSL_CIPHER
) **scsvs_out
,
4570 int sslv2format
, int *al
)
4572 const SSL_CIPHER
*c
;
4573 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
4574 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
4576 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4577 unsigned char cipher
[SSLV2_CIPHER_LEN
];
4579 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4581 if (PACKET_remaining(cipher_suites
) == 0) {
4582 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4583 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4587 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4588 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
4589 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4590 *al
= SSL_AD_DECODE_ERROR
;
4594 sk
= sk_SSL_CIPHER_new_null();
4595 scsvs
= sk_SSL_CIPHER_new_null();
4596 if (sk
== NULL
|| scsvs
== NULL
) {
4597 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4598 *al
= SSL_AD_INTERNAL_ERROR
;
4602 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
4604 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
4605 * first byte set to zero, while true SSLv2 ciphers have a non-zero
4606 * first byte. We don't support any true SSLv2 ciphers, so skip them.
4608 if (sslv2format
&& cipher
[0] != '\0')
4611 /* For SSLv2-compat, ignore leading 0-byte. */
4612 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
4614 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
4615 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
4616 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4617 *al
= SSL_AD_INTERNAL_ERROR
;
4622 if (PACKET_remaining(cipher_suites
) > 0) {
4623 *al
= SSL_AD_INTERNAL_ERROR
;
4624 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_INTERNAL_ERROR
);
4631 sk_SSL_CIPHER_free(sk
);
4632 if (scsvs_out
!= NULL
)
4635 sk_SSL_CIPHER_free(scsvs
);
4638 sk_SSL_CIPHER_free(sk
);
4639 sk_SSL_CIPHER_free(scsvs
);