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_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1537 if (s
->handshake_func
== NULL
) {
1538 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1542 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1543 s
->rwstate
= SSL_NOTHING
;
1547 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1548 struct ssl_async_args args
;
1554 args
.type
= READFUNC
;
1555 args
.f
.func_read
= s
->method
->ssl_read
;
1557 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1558 *readbytes
= s
->asyncrw
;
1561 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1565 int SSL_read(SSL
*s
, void *buf
, int num
)
1571 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1575 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1578 * The cast is safe here because ret should be <= INT_MAX because num is
1582 ret
= (int)readbytes
;
1587 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1589 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1596 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1598 if (s
->handshake_func
== NULL
) {
1599 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1603 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1606 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1607 struct ssl_async_args args
;
1613 args
.type
= READFUNC
;
1614 args
.f
.func_read
= s
->method
->ssl_peek
;
1616 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1617 *readbytes
= s
->asyncrw
;
1620 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1624 int SSL_peek(SSL
*s
, void *buf
, int num
)
1630 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1634 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1637 * The cast is safe here because ret should be <= INT_MAX because num is
1641 ret
= (int)readbytes
;
1647 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1649 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1656 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1658 if (s
->handshake_func
== NULL
) {
1659 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1663 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1664 s
->rwstate
= SSL_NOTHING
;
1665 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1669 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1671 struct ssl_async_args args
;
1674 args
.buf
= (void *)buf
;
1676 args
.type
= WRITEFUNC
;
1677 args
.f
.func_write
= s
->method
->ssl_write
;
1679 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1680 *written
= s
->asyncrw
;
1683 return s
->method
->ssl_write(s
, buf
, num
, written
);
1687 int SSL_write(SSL
*s
, const void *buf
, int num
)
1693 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1697 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1700 * The cast is safe here because ret should be <= INT_MAX because num is
1709 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1711 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1718 int SSL_shutdown(SSL
*s
)
1721 * Note that this function behaves differently from what one might
1722 * expect. Return values are 0 for no success (yet), 1 for success; but
1723 * calling it once is usually not enough, even if blocking I/O is used
1724 * (see ssl3_shutdown).
1727 if (s
->handshake_func
== NULL
) {
1728 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1732 if (!SSL_in_init(s
)) {
1733 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1734 struct ssl_async_args args
;
1737 args
.type
= OTHERFUNC
;
1738 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1740 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1742 return s
->method
->ssl_shutdown(s
);
1745 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1750 int SSL_key_update(SSL
*s
, int updatetype
)
1753 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1754 * negotiated, and that it is appropriate to call SSL_key_update() instead
1755 * of SSL_renegotiate().
1757 if (!SSL_IS_TLS13(s
)) {
1758 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
1762 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
1763 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
1764 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
1768 if (!SSL_is_init_finished(s
)) {
1769 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
1773 ossl_statem_set_in_init(s
, 1);
1774 s
->key_update
= updatetype
;
1778 int SSL_get_key_update_type(SSL
*s
)
1780 return s
->key_update
;
1783 int SSL_renegotiate(SSL
*s
)
1785 if (SSL_IS_TLS13(s
)) {
1786 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
1790 if (s
->renegotiate
== 0)
1795 return (s
->method
->ssl_renegotiate(s
));
1798 int SSL_renegotiate_abbreviated(SSL
*s
)
1800 if (SSL_IS_TLS13(s
))
1803 if (s
->renegotiate
== 0)
1808 return (s
->method
->ssl_renegotiate(s
));
1811 int SSL_renegotiate_pending(SSL
*s
)
1814 * becomes true when negotiation is requested; false again once a
1815 * handshake has finished
1817 return (s
->renegotiate
!= 0);
1820 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
1825 case SSL_CTRL_GET_READ_AHEAD
:
1826 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
1827 case SSL_CTRL_SET_READ_AHEAD
:
1828 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1829 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
1832 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1833 s
->msg_callback_arg
= parg
;
1837 return (s
->mode
|= larg
);
1838 case SSL_CTRL_CLEAR_MODE
:
1839 return (s
->mode
&= ~larg
);
1840 case SSL_CTRL_GET_MAX_CERT_LIST
:
1841 return (long)(s
->max_cert_list
);
1842 case SSL_CTRL_SET_MAX_CERT_LIST
:
1845 l
= (long)s
->max_cert_list
;
1846 s
->max_cert_list
= (size_t)larg
;
1848 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
1849 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
1851 s
->max_send_fragment
= larg
;
1852 if (s
->max_send_fragment
< s
->split_send_fragment
)
1853 s
->split_send_fragment
= s
->max_send_fragment
;
1855 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
1856 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
1858 s
->split_send_fragment
= larg
;
1860 case SSL_CTRL_SET_MAX_PIPELINES
:
1861 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
1863 s
->max_pipelines
= larg
;
1865 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
1867 case SSL_CTRL_GET_RI_SUPPORT
:
1869 return s
->s3
->send_connection_binding
;
1872 case SSL_CTRL_CERT_FLAGS
:
1873 return (s
->cert
->cert_flags
|= larg
);
1874 case SSL_CTRL_CLEAR_CERT_FLAGS
:
1875 return (s
->cert
->cert_flags
&= ~larg
);
1877 case SSL_CTRL_GET_RAW_CIPHERLIST
:
1879 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
1881 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
1882 return (int)s
->s3
->tmp
.ciphers_rawlen
;
1884 return TLS_CIPHER_LEN
;
1886 case SSL_CTRL_GET_EXTMS_SUPPORT
:
1887 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
1889 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
1893 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
1894 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
1895 &s
->min_proto_version
);
1896 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
1897 return ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
1898 &s
->max_proto_version
);
1900 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
1904 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
1907 case SSL_CTRL_SET_MSG_CALLBACK
:
1908 s
->msg_callback
= (void (*)
1909 (int write_p
, int version
, int content_type
,
1910 const void *buf
, size_t len
, SSL
*ssl
,
1915 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
1919 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
1921 return ctx
->sessions
;
1924 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
1927 /* For some cases with ctx == NULL perform syntax checks */
1930 #ifndef OPENSSL_NO_EC
1931 case SSL_CTRL_SET_GROUPS_LIST
:
1932 return tls1_set_groups_list(NULL
, NULL
, parg
);
1934 case SSL_CTRL_SET_SIGALGS_LIST
:
1935 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
1936 return tls1_set_sigalgs_list(NULL
, parg
, 0);
1943 case SSL_CTRL_GET_READ_AHEAD
:
1944 return (ctx
->read_ahead
);
1945 case SSL_CTRL_SET_READ_AHEAD
:
1946 l
= ctx
->read_ahead
;
1947 ctx
->read_ahead
= larg
;
1950 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
1951 ctx
->msg_callback_arg
= parg
;
1954 case SSL_CTRL_GET_MAX_CERT_LIST
:
1955 return (long)(ctx
->max_cert_list
);
1956 case SSL_CTRL_SET_MAX_CERT_LIST
:
1959 l
= (long)ctx
->max_cert_list
;
1960 ctx
->max_cert_list
= (size_t)larg
;
1963 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
1966 l
= (long)ctx
->session_cache_size
;
1967 ctx
->session_cache_size
= (size_t)larg
;
1969 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
1970 return (long)(ctx
->session_cache_size
);
1971 case SSL_CTRL_SET_SESS_CACHE_MODE
:
1972 l
= ctx
->session_cache_mode
;
1973 ctx
->session_cache_mode
= larg
;
1975 case SSL_CTRL_GET_SESS_CACHE_MODE
:
1976 return (ctx
->session_cache_mode
);
1978 case SSL_CTRL_SESS_NUMBER
:
1979 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
1980 case SSL_CTRL_SESS_CONNECT
:
1981 return (ctx
->stats
.sess_connect
);
1982 case SSL_CTRL_SESS_CONNECT_GOOD
:
1983 return (ctx
->stats
.sess_connect_good
);
1984 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
1985 return (ctx
->stats
.sess_connect_renegotiate
);
1986 case SSL_CTRL_SESS_ACCEPT
:
1987 return (ctx
->stats
.sess_accept
);
1988 case SSL_CTRL_SESS_ACCEPT_GOOD
:
1989 return (ctx
->stats
.sess_accept_good
);
1990 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
1991 return (ctx
->stats
.sess_accept_renegotiate
);
1992 case SSL_CTRL_SESS_HIT
:
1993 return (ctx
->stats
.sess_hit
);
1994 case SSL_CTRL_SESS_CB_HIT
:
1995 return (ctx
->stats
.sess_cb_hit
);
1996 case SSL_CTRL_SESS_MISSES
:
1997 return (ctx
->stats
.sess_miss
);
1998 case SSL_CTRL_SESS_TIMEOUTS
:
1999 return (ctx
->stats
.sess_timeout
);
2000 case SSL_CTRL_SESS_CACHE_FULL
:
2001 return (ctx
->stats
.sess_cache_full
);
2003 return (ctx
->mode
|= larg
);
2004 case SSL_CTRL_CLEAR_MODE
:
2005 return (ctx
->mode
&= ~larg
);
2006 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2007 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2009 ctx
->max_send_fragment
= larg
;
2010 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2011 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2013 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2014 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2016 ctx
->split_send_fragment
= larg
;
2018 case SSL_CTRL_SET_MAX_PIPELINES
:
2019 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2021 ctx
->max_pipelines
= larg
;
2023 case SSL_CTRL_CERT_FLAGS
:
2024 return (ctx
->cert
->cert_flags
|= larg
);
2025 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2026 return (ctx
->cert
->cert_flags
&= ~larg
);
2027 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2028 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2029 &ctx
->min_proto_version
);
2030 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2031 return ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2032 &ctx
->max_proto_version
);
2034 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2038 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2041 case SSL_CTRL_SET_MSG_CALLBACK
:
2042 ctx
->msg_callback
= (void (*)
2043 (int write_p
, int version
, int content_type
,
2044 const void *buf
, size_t len
, SSL
*ssl
,
2049 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2053 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2062 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2063 const SSL_CIPHER
*const *bp
)
2065 if ((*ap
)->id
> (*bp
)->id
)
2067 if ((*ap
)->id
< (*bp
)->id
)
2072 /** return a STACK of the ciphers available for the SSL and in order of
2074 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2077 if (s
->cipher_list
!= NULL
) {
2078 return (s
->cipher_list
);
2079 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2080 return (s
->ctx
->cipher_list
);
2086 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2088 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2090 return s
->session
->ciphers
;
2093 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2095 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2097 ciphers
= SSL_get_ciphers(s
);
2100 ssl_set_client_disabled(s
);
2101 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2102 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2103 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
)) {
2105 sk
= sk_SSL_CIPHER_new_null();
2108 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2109 sk_SSL_CIPHER_free(sk
);
2117 /** return a STACK of the ciphers available for the SSL and in order of
2119 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2122 if (s
->cipher_list_by_id
!= NULL
) {
2123 return (s
->cipher_list_by_id
);
2124 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2125 return (s
->ctx
->cipher_list_by_id
);
2131 /** The old interface to get the same thing as SSL_get_ciphers() */
2132 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2134 const SSL_CIPHER
*c
;
2135 STACK_OF(SSL_CIPHER
) *sk
;
2139 sk
= SSL_get_ciphers(s
);
2140 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2142 c
= sk_SSL_CIPHER_value(sk
, n
);
2148 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2150 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2153 return ctx
->cipher_list
;
2157 /** specify the ciphers to be used by default by the SSL_CTX */
2158 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2160 STACK_OF(SSL_CIPHER
) *sk
;
2162 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2163 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2165 * ssl_create_cipher_list may return an empty stack if it was unable to
2166 * find a cipher matching the given rule string (for example if the rule
2167 * string specifies a cipher which has been disabled). This is not an
2168 * error as far as ssl_create_cipher_list is concerned, and hence
2169 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2173 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2174 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2180 /** specify the ciphers to be used by the SSL */
2181 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2183 STACK_OF(SSL_CIPHER
) *sk
;
2185 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2186 &s
->cipher_list_by_id
, str
, s
->cert
);
2187 /* see comment in SSL_CTX_set_cipher_list */
2190 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2191 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2197 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2200 STACK_OF(SSL_CIPHER
) *sk
;
2201 const SSL_CIPHER
*c
;
2204 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2208 sk
= s
->session
->ciphers
;
2210 if (sk_SSL_CIPHER_num(sk
) == 0)
2213 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2216 c
= sk_SSL_CIPHER_value(sk
, i
);
2217 n
= strlen(c
->name
);
2224 memcpy(p
, c
->name
, n
+ 1);
2233 /** return a servername extension value if provided in Client Hello, or NULL.
2234 * So far, only host_name types are defined (RFC 3546).
2237 const char *SSL_get_servername(const SSL
*s
, const int type
)
2239 if (type
!= TLSEXT_NAMETYPE_host_name
)
2242 return s
->session
&& !s
->ext
.hostname
?
2243 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2246 int SSL_get_servername_type(const SSL
*s
)
2249 && (!s
->ext
.hostname
? s
->session
->
2250 ext
.hostname
: s
->ext
.hostname
))
2251 return TLSEXT_NAMETYPE_host_name
;
2256 * SSL_select_next_proto implements the standard protocol selection. It is
2257 * expected that this function is called from the callback set by
2258 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2259 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2260 * not included in the length. A byte string of length 0 is invalid. No byte
2261 * string may be truncated. The current, but experimental algorithm for
2262 * selecting the protocol is: 1) If the server doesn't support NPN then this
2263 * is indicated to the callback. In this case, the client application has to
2264 * abort the connection or have a default application level protocol. 2) If
2265 * the server supports NPN, but advertises an empty list then the client
2266 * selects the first protocol in its list, but indicates via the API that this
2267 * fallback case was enacted. 3) Otherwise, the client finds the first
2268 * protocol in the server's list that it supports and selects this protocol.
2269 * This is because it's assumed that the server has better information about
2270 * which protocol a client should use. 4) If the client doesn't support any
2271 * of the server's advertised protocols, then this is treated the same as
2272 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2273 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2275 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2276 const unsigned char *server
,
2277 unsigned int server_len
,
2278 const unsigned char *client
, unsigned int client_len
)
2281 const unsigned char *result
;
2282 int status
= OPENSSL_NPN_UNSUPPORTED
;
2285 * For each protocol in server preference order, see if we support it.
2287 for (i
= 0; i
< server_len
;) {
2288 for (j
= 0; j
< client_len
;) {
2289 if (server
[i
] == client
[j
] &&
2290 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2291 /* We found a match */
2292 result
= &server
[i
];
2293 status
= OPENSSL_NPN_NEGOTIATED
;
2303 /* There's no overlap between our protocols and the server's list. */
2305 status
= OPENSSL_NPN_NO_OVERLAP
;
2308 *out
= (unsigned char *)result
+ 1;
2309 *outlen
= result
[0];
2313 #ifndef OPENSSL_NO_NEXTPROTONEG
2315 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2316 * client's requested protocol for this connection and returns 0. If the
2317 * client didn't request any protocol, then *data is set to NULL. Note that
2318 * the client can request any protocol it chooses. The value returned from
2319 * this function need not be a member of the list of supported protocols
2320 * provided by the callback.
2322 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2329 *len
= (unsigned int)s
->ext
.npn_len
;
2334 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2335 * a TLS server needs a list of supported protocols for Next Protocol
2336 * Negotiation. The returned list must be in wire format. The list is
2337 * returned by setting |out| to point to it and |outlen| to its length. This
2338 * memory will not be modified, but one should assume that the SSL* keeps a
2339 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2340 * wishes to advertise. Otherwise, no such extension will be included in the
2343 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2344 SSL_CTX_npn_advertised_cb_func cb
,
2347 ctx
->ext
.npn_advertised_cb
= cb
;
2348 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2352 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2353 * client needs to select a protocol from the server's provided list. |out|
2354 * must be set to point to the selected protocol (which may be within |in|).
2355 * The length of the protocol name must be written into |outlen|. The
2356 * server's advertised protocols are provided in |in| and |inlen|. The
2357 * callback can assume that |in| is syntactically valid. The client must
2358 * select a protocol. It is fatal to the connection if this callback returns
2359 * a value other than SSL_TLSEXT_ERR_OK.
2361 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2362 SSL_CTX_npn_select_cb_func cb
,
2365 ctx
->ext
.npn_select_cb
= cb
;
2366 ctx
->ext
.npn_select_cb_arg
= arg
;
2371 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2372 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2373 * length-prefixed strings). Returns 0 on success.
2375 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2376 unsigned int protos_len
)
2378 OPENSSL_free(ctx
->ext
.alpn
);
2379 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2380 if (ctx
->ext
.alpn
== NULL
) {
2381 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2384 ctx
->ext
.alpn_len
= protos_len
;
2390 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2391 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2392 * length-prefixed strings). Returns 0 on success.
2394 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2395 unsigned int protos_len
)
2397 OPENSSL_free(ssl
->ext
.alpn
);
2398 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2399 if (ssl
->ext
.alpn
== NULL
) {
2400 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2403 ssl
->ext
.alpn_len
= protos_len
;
2409 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2410 * called during ClientHello processing in order to select an ALPN protocol
2411 * from the client's list of offered protocols.
2413 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2414 SSL_CTX_alpn_select_cb_func cb
,
2417 ctx
->ext
.alpn_select_cb
= cb
;
2418 ctx
->ext
.alpn_select_cb_arg
= arg
;
2422 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2423 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2424 * (not including the leading length-prefix byte). If the server didn't
2425 * respond with a negotiated protocol then |*len| will be zero.
2427 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2432 *data
= ssl
->s3
->alpn_selected
;
2436 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2439 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2440 const char *label
, size_t llen
,
2441 const unsigned char *p
, size_t plen
,
2444 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2447 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2452 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2454 const unsigned char *session_id
= a
->session_id
;
2456 unsigned char tmp_storage
[4];
2458 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2459 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2460 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2461 session_id
= tmp_storage
;
2465 ((unsigned long)session_id
[0]) |
2466 ((unsigned long)session_id
[1] << 8L) |
2467 ((unsigned long)session_id
[2] << 16L) |
2468 ((unsigned long)session_id
[3] << 24L);
2473 * NB: If this function (or indeed the hash function which uses a sort of
2474 * coarser function than this one) is changed, ensure
2475 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2476 * being able to construct an SSL_SESSION that will collide with any existing
2477 * session with a matching session ID.
2479 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2481 if (a
->ssl_version
!= b
->ssl_version
)
2483 if (a
->session_id_length
!= b
->session_id_length
)
2485 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2489 * These wrapper functions should remain rather than redeclaring
2490 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2491 * variable. The reason is that the functions aren't static, they're exposed
2495 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2497 SSL_CTX
*ret
= NULL
;
2500 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2504 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2507 if (FIPS_mode() && (meth
->version
< TLS1_VERSION
)) {
2508 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE
);
2512 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2513 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2516 ret
= OPENSSL_zalloc(sizeof(*ret
));
2521 ret
->min_proto_version
= 0;
2522 ret
->max_proto_version
= 0;
2523 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2524 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2525 /* We take the system default. */
2526 ret
->session_timeout
= meth
->get_timeout();
2527 ret
->references
= 1;
2528 ret
->lock
= CRYPTO_THREAD_lock_new();
2529 if (ret
->lock
== NULL
) {
2530 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2534 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2535 ret
->verify_mode
= SSL_VERIFY_NONE
;
2536 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2539 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2540 if (ret
->sessions
== NULL
)
2542 ret
->cert_store
= X509_STORE_new();
2543 if (ret
->cert_store
== NULL
)
2545 #ifndef OPENSSL_NO_CT
2546 ret
->ctlog_store
= CTLOG_STORE_new();
2547 if (ret
->ctlog_store
== NULL
)
2550 if (!ssl_create_cipher_list(ret
->method
,
2551 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2552 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2553 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2554 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2558 ret
->param
= X509_VERIFY_PARAM_new();
2559 if (ret
->param
== NULL
)
2562 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2563 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2566 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2567 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2571 if ((ret
->client_CA
= sk_X509_NAME_new_null()) == NULL
)
2574 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2577 /* No compression for DTLS */
2578 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2579 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2581 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2582 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2584 /* Setup RFC5077 ticket keys */
2585 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2586 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2587 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2588 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2589 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2590 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2591 ret
->options
|= SSL_OP_NO_TICKET
;
2593 #ifndef OPENSSL_NO_SRP
2594 if (!SSL_CTX_SRP_CTX_init(ret
))
2597 #ifndef OPENSSL_NO_ENGINE
2598 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2599 # define eng_strx(x) #x
2600 # define eng_str(x) eng_strx(x)
2601 /* Use specific client engine automatically... ignore errors */
2604 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2607 ENGINE_load_builtin_engines();
2608 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2610 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2616 * Default is to connect to non-RI servers. When RI is more widely
2617 * deployed might change this.
2619 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2621 * Disable compression by default to prevent CRIME. Applications can
2622 * re-enable compression by configuring
2623 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2624 * or by using the SSL_CONF library.
2626 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2628 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2632 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2638 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2642 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2645 REF_PRINT_COUNT("SSL_CTX", ctx
);
2646 REF_ASSERT_ISNT(i
< 2);
2647 return ((i
> 1) ? 1 : 0);
2650 void SSL_CTX_free(SSL_CTX
*a
)
2657 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2658 REF_PRINT_COUNT("SSL_CTX", a
);
2661 REF_ASSERT_ISNT(i
< 0);
2663 X509_VERIFY_PARAM_free(a
->param
);
2664 dane_ctx_final(&a
->dane
);
2667 * Free internal session cache. However: the remove_cb() may reference
2668 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2669 * after the sessions were flushed.
2670 * As the ex_data handling routines might also touch the session cache,
2671 * the most secure solution seems to be: empty (flush) the cache, then
2672 * free ex_data, then finally free the cache.
2673 * (See ticket [openssl.org #212].)
2675 if (a
->sessions
!= NULL
)
2676 SSL_CTX_flush_sessions(a
, 0);
2678 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2679 lh_SSL_SESSION_free(a
->sessions
);
2680 X509_STORE_free(a
->cert_store
);
2681 #ifndef OPENSSL_NO_CT
2682 CTLOG_STORE_free(a
->ctlog_store
);
2684 sk_SSL_CIPHER_free(a
->cipher_list
);
2685 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2686 ssl_cert_free(a
->cert
);
2687 sk_X509_NAME_pop_free(a
->client_CA
, X509_NAME_free
);
2688 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2689 a
->comp_methods
= NULL
;
2690 #ifndef OPENSSL_NO_SRTP
2691 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2693 #ifndef OPENSSL_NO_SRP
2694 SSL_CTX_SRP_CTX_free(a
);
2696 #ifndef OPENSSL_NO_ENGINE
2697 ENGINE_finish(a
->client_cert_engine
);
2700 #ifndef OPENSSL_NO_EC
2701 OPENSSL_free(a
->ext
.ecpointformats
);
2702 OPENSSL_free(a
->ext
.supportedgroups
);
2704 OPENSSL_free(a
->ext
.alpn
);
2706 CRYPTO_THREAD_lock_free(a
->lock
);
2711 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2713 ctx
->default_passwd_callback
= cb
;
2716 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2718 ctx
->default_passwd_callback_userdata
= u
;
2721 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2723 return ctx
->default_passwd_callback
;
2726 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2728 return ctx
->default_passwd_callback_userdata
;
2731 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2733 s
->default_passwd_callback
= cb
;
2736 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2738 s
->default_passwd_callback_userdata
= u
;
2741 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2743 return s
->default_passwd_callback
;
2746 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2748 return s
->default_passwd_callback_userdata
;
2751 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2752 int (*cb
) (X509_STORE_CTX
*, void *),
2755 ctx
->app_verify_callback
= cb
;
2756 ctx
->app_verify_arg
= arg
;
2759 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
2760 int (*cb
) (int, X509_STORE_CTX
*))
2762 ctx
->verify_mode
= mode
;
2763 ctx
->default_verify_callback
= cb
;
2766 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
2768 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
2771 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2773 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
2776 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
2778 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
2781 void ssl_set_masks(SSL
*s
)
2784 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
2785 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
2786 unsigned long mask_k
, mask_a
;
2787 #ifndef OPENSSL_NO_EC
2788 int have_ecc_cert
, ecdsa_ok
;
2793 #ifndef OPENSSL_NO_DH
2794 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
2799 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2800 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
2801 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
2802 #ifndef OPENSSL_NO_EC
2803 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
2809 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
2810 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
2813 #ifndef OPENSSL_NO_GOST
2814 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
2815 mask_k
|= SSL_kGOST
;
2816 mask_a
|= SSL_aGOST12
;
2818 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
2819 mask_k
|= SSL_kGOST
;
2820 mask_a
|= SSL_aGOST12
;
2822 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
2823 mask_k
|= SSL_kGOST
;
2824 mask_a
|= SSL_aGOST01
;
2834 if (rsa_enc
|| rsa_sign
) {
2842 mask_a
|= SSL_aNULL
;
2845 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2846 * depending on the key usage extension.
2848 #ifndef OPENSSL_NO_EC
2849 if (have_ecc_cert
) {
2851 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
2852 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
2853 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
2856 mask_a
|= SSL_aECDSA
;
2860 #ifndef OPENSSL_NO_EC
2861 mask_k
|= SSL_kECDHE
;
2864 #ifndef OPENSSL_NO_PSK
2867 if (mask_k
& SSL_kRSA
)
2868 mask_k
|= SSL_kRSAPSK
;
2869 if (mask_k
& SSL_kDHE
)
2870 mask_k
|= SSL_kDHEPSK
;
2871 if (mask_k
& SSL_kECDHE
)
2872 mask_k
|= SSL_kECDHEPSK
;
2875 s
->s3
->tmp
.mask_k
= mask_k
;
2876 s
->s3
->tmp
.mask_a
= mask_a
;
2879 #ifndef OPENSSL_NO_EC
2881 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
2883 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
2884 /* key usage, if present, must allow signing */
2885 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
2886 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
2887 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
2891 return 1; /* all checks are ok */
2896 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
2897 size_t *serverinfo_length
)
2899 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
2900 *serverinfo_length
= 0;
2902 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
2905 *serverinfo
= cpk
->serverinfo
;
2906 *serverinfo_length
= cpk
->serverinfo_length
;
2910 void ssl_update_cache(SSL
*s
, int mode
)
2915 * If the session_id_length is 0, we are not supposed to cache it, and it
2916 * would be rather hard to do anyway :-)
2918 if (s
->session
->session_id_length
== 0)
2921 i
= s
->session_ctx
->session_cache_mode
;
2922 if ((i
& mode
) && (!s
->hit
)
2923 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
)
2924 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
2925 && (s
->session_ctx
->new_session_cb
!= NULL
)) {
2926 SSL_SESSION_up_ref(s
->session
);
2927 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
2928 SSL_SESSION_free(s
->session
);
2931 /* auto flush every 255 connections */
2932 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
2933 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
2934 ? s
->session_ctx
->stats
.sess_connect_good
2935 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
2936 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
2941 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
2946 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
2951 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
2955 if (s
->method
!= meth
) {
2956 const SSL_METHOD
*sm
= s
->method
;
2957 int (*hf
) (SSL
*) = s
->handshake_func
;
2959 if (sm
->version
== meth
->version
)
2964 ret
= s
->method
->ssl_new(s
);
2967 if (hf
== sm
->ssl_connect
)
2968 s
->handshake_func
= meth
->ssl_connect
;
2969 else if (hf
== sm
->ssl_accept
)
2970 s
->handshake_func
= meth
->ssl_accept
;
2975 int SSL_get_error(const SSL
*s
, int i
)
2982 return (SSL_ERROR_NONE
);
2985 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2986 * where we do encode the error
2988 if ((l
= ERR_peek_error()) != 0) {
2989 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
2990 return (SSL_ERROR_SYSCALL
);
2992 return (SSL_ERROR_SSL
);
2995 if (SSL_want_read(s
)) {
2996 bio
= SSL_get_rbio(s
);
2997 if (BIO_should_read(bio
))
2998 return (SSL_ERROR_WANT_READ
);
2999 else if (BIO_should_write(bio
))
3001 * This one doesn't make too much sense ... We never try to write
3002 * to the rbio, and an application program where rbio and wbio
3003 * are separate couldn't even know what it should wait for.
3004 * However if we ever set s->rwstate incorrectly (so that we have
3005 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3006 * wbio *are* the same, this test works around that bug; so it
3007 * might be safer to keep it.
3009 return (SSL_ERROR_WANT_WRITE
);
3010 else if (BIO_should_io_special(bio
)) {
3011 reason
= BIO_get_retry_reason(bio
);
3012 if (reason
== BIO_RR_CONNECT
)
3013 return (SSL_ERROR_WANT_CONNECT
);
3014 else if (reason
== BIO_RR_ACCEPT
)
3015 return (SSL_ERROR_WANT_ACCEPT
);
3017 return (SSL_ERROR_SYSCALL
); /* unknown */
3021 if (SSL_want_write(s
)) {
3023 * Access wbio directly - in order to use the buffered bio if
3027 if (BIO_should_write(bio
))
3028 return (SSL_ERROR_WANT_WRITE
);
3029 else if (BIO_should_read(bio
))
3031 * See above (SSL_want_read(s) with BIO_should_write(bio))
3033 return (SSL_ERROR_WANT_READ
);
3034 else if (BIO_should_io_special(bio
)) {
3035 reason
= BIO_get_retry_reason(bio
);
3036 if (reason
== BIO_RR_CONNECT
)
3037 return (SSL_ERROR_WANT_CONNECT
);
3038 else if (reason
== BIO_RR_ACCEPT
)
3039 return (SSL_ERROR_WANT_ACCEPT
);
3041 return (SSL_ERROR_SYSCALL
);
3044 if (SSL_want_x509_lookup(s
))
3045 return (SSL_ERROR_WANT_X509_LOOKUP
);
3046 if (SSL_want_async(s
))
3047 return SSL_ERROR_WANT_ASYNC
;
3048 if (SSL_want_async_job(s
))
3049 return SSL_ERROR_WANT_ASYNC_JOB
;
3050 if (SSL_want_early(s
))
3051 return SSL_ERROR_WANT_EARLY
;
3053 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3054 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3055 return (SSL_ERROR_ZERO_RETURN
);
3057 return (SSL_ERROR_SYSCALL
);
3060 static int ssl_do_handshake_intern(void *vargs
)
3062 struct ssl_async_args
*args
;
3065 args
= (struct ssl_async_args
*)vargs
;
3068 return s
->handshake_func(s
);
3071 int SSL_do_handshake(SSL
*s
)
3075 if (s
->handshake_func
== NULL
) {
3076 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3080 s
->method
->ssl_renegotiate_check(s
, 0);
3082 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3083 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3084 struct ssl_async_args args
;
3088 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3090 ret
= s
->handshake_func(s
);
3096 void SSL_set_accept_state(SSL
*s
)
3100 ossl_statem_clear(s
);
3101 s
->handshake_func
= s
->method
->ssl_accept
;
3105 void SSL_set_connect_state(SSL
*s
)
3109 ossl_statem_clear(s
);
3110 s
->handshake_func
= s
->method
->ssl_connect
;
3114 int ssl_undefined_function(SSL
*s
)
3116 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3120 int ssl_undefined_void_function(void)
3122 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3123 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3127 int ssl_undefined_const_function(const SSL
*s
)
3132 const SSL_METHOD
*ssl_bad_method(int ver
)
3134 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3138 const char *ssl_protocol_to_string(int version
)
3142 case TLS1_3_VERSION
:
3145 case TLS1_2_VERSION
:
3148 case TLS1_1_VERSION
:
3163 case DTLS1_2_VERSION
:
3171 const char *SSL_get_version(const SSL
*s
)
3173 return ssl_protocol_to_string(s
->version
);
3176 SSL
*SSL_dup(SSL
*s
)
3178 STACK_OF(X509_NAME
) *sk
;
3183 /* If we're not quiescent, just up_ref! */
3184 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3185 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3190 * Otherwise, copy configuration state, and session if set.
3192 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3195 if (s
->session
!= NULL
) {
3197 * Arranges to share the same session via up_ref. This "copies"
3198 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3200 if (!SSL_copy_session_id(ret
, s
))
3204 * No session has been established yet, so we have to expect that
3205 * s->cert or ret->cert will be changed later -- they should not both
3206 * point to the same object, and thus we can't use
3207 * SSL_copy_session_id.
3209 if (!SSL_set_ssl_method(ret
, s
->method
))
3212 if (s
->cert
!= NULL
) {
3213 ssl_cert_free(ret
->cert
);
3214 ret
->cert
= ssl_cert_dup(s
->cert
);
3215 if (ret
->cert
== NULL
)
3219 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3220 (int)s
->sid_ctx_length
))
3224 if (!ssl_dane_dup(ret
, s
))
3226 ret
->version
= s
->version
;
3227 ret
->options
= s
->options
;
3228 ret
->mode
= s
->mode
;
3229 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3230 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3231 ret
->msg_callback
= s
->msg_callback
;
3232 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3233 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3234 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3235 ret
->generate_session_id
= s
->generate_session_id
;
3237 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3239 /* copy app data, a little dangerous perhaps */
3240 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3243 /* setup rbio, and wbio */
3244 if (s
->rbio
!= NULL
) {
3245 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3248 if (s
->wbio
!= NULL
) {
3249 if (s
->wbio
!= s
->rbio
) {
3250 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3253 BIO_up_ref(ret
->rbio
);
3254 ret
->wbio
= ret
->rbio
;
3258 ret
->server
= s
->server
;
3259 if (s
->handshake_func
) {
3261 SSL_set_accept_state(ret
);
3263 SSL_set_connect_state(ret
);
3265 ret
->shutdown
= s
->shutdown
;
3268 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3269 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3271 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3273 /* dup the cipher_list and cipher_list_by_id stacks */
3274 if (s
->cipher_list
!= NULL
) {
3275 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3278 if (s
->cipher_list_by_id
!= NULL
)
3279 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3283 /* Dup the client_CA list */
3284 if (s
->client_CA
!= NULL
) {
3285 if ((sk
= sk_X509_NAME_dup(s
->client_CA
)) == NULL
)
3287 ret
->client_CA
= sk
;
3288 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3289 xn
= sk_X509_NAME_value(sk
, i
);
3290 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3303 void ssl_clear_cipher_ctx(SSL
*s
)
3305 if (s
->enc_read_ctx
!= NULL
) {
3306 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3307 s
->enc_read_ctx
= NULL
;
3309 if (s
->enc_write_ctx
!= NULL
) {
3310 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3311 s
->enc_write_ctx
= NULL
;
3313 #ifndef OPENSSL_NO_COMP
3314 COMP_CTX_free(s
->expand
);
3316 COMP_CTX_free(s
->compress
);
3321 X509
*SSL_get_certificate(const SSL
*s
)
3323 if (s
->cert
!= NULL
)
3324 return (s
->cert
->key
->x509
);
3329 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3331 if (s
->cert
!= NULL
)
3332 return (s
->cert
->key
->privatekey
);
3337 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3339 if (ctx
->cert
!= NULL
)
3340 return ctx
->cert
->key
->x509
;
3345 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3347 if (ctx
->cert
!= NULL
)
3348 return ctx
->cert
->key
->privatekey
;
3353 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3355 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3356 return (s
->session
->cipher
);
3360 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3362 #ifndef OPENSSL_NO_COMP
3363 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3369 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3371 #ifndef OPENSSL_NO_COMP
3372 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3378 int ssl_init_wbio_buffer(SSL
*s
)
3382 if (s
->bbio
!= NULL
) {
3383 /* Already buffered. */
3387 bbio
= BIO_new(BIO_f_buffer());
3388 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3390 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3394 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3399 void ssl_free_wbio_buffer(SSL
*s
)
3401 /* callers ensure s is never null */
3402 if (s
->bbio
== NULL
)
3405 s
->wbio
= BIO_pop(s
->wbio
);
3406 assert(s
->wbio
!= NULL
);
3411 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3413 ctx
->quiet_shutdown
= mode
;
3416 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3418 return (ctx
->quiet_shutdown
);
3421 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3423 s
->quiet_shutdown
= mode
;
3426 int SSL_get_quiet_shutdown(const SSL
*s
)
3428 return (s
->quiet_shutdown
);
3431 void SSL_set_shutdown(SSL
*s
, int mode
)
3436 int SSL_get_shutdown(const SSL
*s
)
3441 int SSL_version(const SSL
*s
)
3446 int SSL_client_version(const SSL
*s
)
3448 return s
->client_version
;
3451 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3456 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3459 if (ssl
->ctx
== ctx
)
3462 ctx
= ssl
->session_ctx
;
3463 new_cert
= ssl_cert_dup(ctx
->cert
);
3464 if (new_cert
== NULL
) {
3467 ssl_cert_free(ssl
->cert
);
3468 ssl
->cert
= new_cert
;
3471 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3472 * so setter APIs must prevent invalid lengths from entering the system.
3474 OPENSSL_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
));
3477 * If the session ID context matches that of the parent SSL_CTX,
3478 * inherit it from the new SSL_CTX as well. If however the context does
3479 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3480 * leave it unchanged.
3482 if ((ssl
->ctx
!= NULL
) &&
3483 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3484 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3485 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3486 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3489 SSL_CTX_up_ref(ctx
);
3490 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3496 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3498 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3501 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3503 X509_LOOKUP
*lookup
;
3505 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3508 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3510 /* Clear any errors if the default directory does not exist */
3516 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3518 X509_LOOKUP
*lookup
;
3520 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3524 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3526 /* Clear any errors if the default file does not exist */
3532 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3535 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3538 void SSL_set_info_callback(SSL
*ssl
,
3539 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3541 ssl
->info_callback
= cb
;
3545 * One compiler (Diab DCC) doesn't like argument names in returned function
3548 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3551 return ssl
->info_callback
;
3554 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3556 ssl
->verify_result
= arg
;
3559 long SSL_get_verify_result(const SSL
*ssl
)
3561 return (ssl
->verify_result
);
3564 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3567 return sizeof(ssl
->s3
->client_random
);
3568 if (outlen
> sizeof(ssl
->s3
->client_random
))
3569 outlen
= sizeof(ssl
->s3
->client_random
);
3570 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3574 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3577 return sizeof(ssl
->s3
->server_random
);
3578 if (outlen
> sizeof(ssl
->s3
->server_random
))
3579 outlen
= sizeof(ssl
->s3
->server_random
);
3580 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3584 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3585 unsigned char *out
, size_t outlen
)
3588 return session
->master_key_length
;
3589 if (outlen
> session
->master_key_length
)
3590 outlen
= session
->master_key_length
;
3591 memcpy(out
, session
->master_key
, outlen
);
3595 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3597 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3600 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3602 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3605 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3607 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3610 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3612 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3620 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3622 return (ctx
->cert_store
);
3625 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3627 X509_STORE_free(ctx
->cert_store
);
3628 ctx
->cert_store
= store
;
3631 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3634 X509_STORE_up_ref(store
);
3635 SSL_CTX_set_cert_store(ctx
, store
);
3638 int SSL_want(const SSL
*s
)
3640 return (s
->rwstate
);
3644 * \brief Set the callback for generating temporary DH keys.
3645 * \param ctx the SSL context.
3646 * \param dh the callback
3649 #ifndef OPENSSL_NO_DH
3650 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3651 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3654 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3657 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3660 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3664 #ifndef OPENSSL_NO_PSK
3665 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3667 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3668 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3671 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3672 if (identity_hint
!= NULL
) {
3673 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3674 if (ctx
->cert
->psk_identity_hint
== NULL
)
3677 ctx
->cert
->psk_identity_hint
= NULL
;
3681 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3686 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3687 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3690 OPENSSL_free(s
->cert
->psk_identity_hint
);
3691 if (identity_hint
!= NULL
) {
3692 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3693 if (s
->cert
->psk_identity_hint
== NULL
)
3696 s
->cert
->psk_identity_hint
= NULL
;
3700 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3702 if (s
== NULL
|| s
->session
== NULL
)
3704 return (s
->session
->psk_identity_hint
);
3707 const char *SSL_get_psk_identity(const SSL
*s
)
3709 if (s
== NULL
|| s
->session
== NULL
)
3711 return (s
->session
->psk_identity
);
3714 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
3716 s
->psk_client_callback
= cb
;
3719 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
3721 ctx
->psk_client_callback
= cb
;
3724 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
3726 s
->psk_server_callback
= cb
;
3729 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
3731 ctx
->psk_server_callback
= cb
;
3735 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
3736 void (*cb
) (int write_p
, int version
,
3737 int content_type
, const void *buf
,
3738 size_t len
, SSL
*ssl
, void *arg
))
3740 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3743 void SSL_set_msg_callback(SSL
*ssl
,
3744 void (*cb
) (int write_p
, int version
,
3745 int content_type
, const void *buf
,
3746 size_t len
, SSL
*ssl
, void *arg
))
3748 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
3751 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
3752 int (*cb
) (SSL
*ssl
,
3756 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3757 (void (*)(void))cb
);
3760 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
3761 int (*cb
) (SSL
*ssl
,
3762 int is_forward_secure
))
3764 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
3765 (void (*)(void))cb
);
3769 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3770 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3771 * If EVP_MD pointer is passed, initializes ctx with this md.
3772 * Returns the newly allocated ctx;
3775 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
3777 ssl_clear_hash_ctx(hash
);
3778 *hash
= EVP_MD_CTX_new();
3779 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
3780 EVP_MD_CTX_free(*hash
);
3787 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
3790 EVP_MD_CTX_free(*hash
);
3794 /* Retrieve handshake hashes */
3795 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
3798 EVP_MD_CTX
*ctx
= NULL
;
3799 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
3800 int hashleni
= EVP_MD_CTX_size(hdgst
);
3803 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
3806 ctx
= EVP_MD_CTX_new();
3810 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
3811 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
3814 *hashlen
= hashleni
;
3818 EVP_MD_CTX_free(ctx
);
3822 int SSL_session_reused(SSL
*s
)
3827 int SSL_is_server(SSL
*s
)
3832 #if OPENSSL_API_COMPAT < 0x10100000L
3833 void SSL_set_debug(SSL
*s
, int debug
)
3835 /* Old function was do-nothing anyway... */
3841 void SSL_set_security_level(SSL
*s
, int level
)
3843 s
->cert
->sec_level
= level
;
3846 int SSL_get_security_level(const SSL
*s
)
3848 return s
->cert
->sec_level
;
3851 void SSL_set_security_callback(SSL
*s
,
3852 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
3853 int op
, int bits
, int nid
,
3854 void *other
, void *ex
))
3856 s
->cert
->sec_cb
= cb
;
3859 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
3860 const SSL_CTX
*ctx
, int op
,
3861 int bits
, int nid
, void *other
,
3863 return s
->cert
->sec_cb
;
3866 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
3868 s
->cert
->sec_ex
= ex
;
3871 void *SSL_get0_security_ex_data(const SSL
*s
)
3873 return s
->cert
->sec_ex
;
3876 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
3878 ctx
->cert
->sec_level
= level
;
3881 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
3883 return ctx
->cert
->sec_level
;
3886 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
3887 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
3888 int op
, int bits
, int nid
,
3889 void *other
, void *ex
))
3891 ctx
->cert
->sec_cb
= cb
;
3894 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
3900 return ctx
->cert
->sec_cb
;
3903 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
3905 ctx
->cert
->sec_ex
= ex
;
3908 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
3910 return ctx
->cert
->sec_ex
;
3914 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3915 * can return unsigned long, instead of the generic long return value from the
3916 * control interface.
3918 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
3920 return ctx
->options
;
3923 unsigned long SSL_get_options(const SSL
*s
)
3928 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
3930 return ctx
->options
|= op
;
3933 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
3935 return s
->options
|= op
;
3938 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
3940 return ctx
->options
&= ~op
;
3943 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
3945 return s
->options
&= ~op
;
3948 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
3950 return s
->verified_chain
;
3953 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
3955 #ifndef OPENSSL_NO_CT
3958 * Moves SCTs from the |src| stack to the |dst| stack.
3959 * The source of each SCT will be set to |origin|.
3960 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3962 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3964 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
3965 sct_source_t origin
)
3971 *dst
= sk_SCT_new_null();
3973 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
3978 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
3979 if (SCT_set_source(sct
, origin
) != 1)
3982 if (sk_SCT_push(*dst
, sct
) <= 0)
3990 sk_SCT_push(src
, sct
); /* Put the SCT back */
3995 * Look for data collected during ServerHello and parse if found.
3996 * Returns the number of SCTs extracted.
3998 static int ct_extract_tls_extension_scts(SSL
*s
)
4000 int scts_extracted
= 0;
4002 if (s
->ext
.scts
!= NULL
) {
4003 const unsigned char *p
= s
->ext
.scts
;
4004 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4006 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4008 SCT_LIST_free(scts
);
4011 return scts_extracted
;
4015 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4016 * contains an SCT X509 extension. They will be stored in |s->scts|.
4018 * - The number of SCTs extracted, assuming an OCSP response exists.
4019 * - 0 if no OCSP response exists or it contains no SCTs.
4020 * - A negative integer if an error occurs.
4022 static int ct_extract_ocsp_response_scts(SSL
*s
)
4024 # ifndef OPENSSL_NO_OCSP
4025 int scts_extracted
= 0;
4026 const unsigned char *p
;
4027 OCSP_BASICRESP
*br
= NULL
;
4028 OCSP_RESPONSE
*rsp
= NULL
;
4029 STACK_OF(SCT
) *scts
= NULL
;
4032 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4035 p
= s
->ext
.ocsp
.resp
;
4036 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4040 br
= OCSP_response_get1_basic(rsp
);
4044 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4045 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4051 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4053 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4054 if (scts_extracted
< 0)
4058 SCT_LIST_free(scts
);
4059 OCSP_BASICRESP_free(br
);
4060 OCSP_RESPONSE_free(rsp
);
4061 return scts_extracted
;
4063 /* Behave as if no OCSP response exists */
4069 * Attempts to extract SCTs from the peer certificate.
4070 * Return the number of SCTs extracted, or a negative integer if an error
4073 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4075 int scts_extracted
= 0;
4076 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4079 STACK_OF(SCT
) *scts
=
4080 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4083 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4085 SCT_LIST_free(scts
);
4088 return scts_extracted
;
4092 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4093 * response (if it exists) and X509v3 extensions in the certificate.
4094 * Returns NULL if an error occurs.
4096 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4098 if (!s
->scts_parsed
) {
4099 if (ct_extract_tls_extension_scts(s
) < 0 ||
4100 ct_extract_ocsp_response_scts(s
) < 0 ||
4101 ct_extract_x509v3_extension_scts(s
) < 0)
4111 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4112 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4117 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4118 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4120 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4123 for (i
= 0; i
< count
; ++i
) {
4124 SCT
*sct
= sk_SCT_value(scts
, i
);
4125 int status
= SCT_get_validation_status(sct
);
4127 if (status
== SCT_VALIDATION_STATUS_VALID
)
4130 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4134 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4138 * Since code exists that uses the custom extension handler for CT, look
4139 * for this and throw an error if they have already registered to use CT.
4141 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4142 TLSEXT_TYPE_signed_certificate_timestamp
))
4144 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4145 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4149 if (callback
!= NULL
) {
4151 * If we are validating CT, then we MUST accept SCTs served via OCSP
4153 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4157 s
->ct_validation_callback
= callback
;
4158 s
->ct_validation_callback_arg
= arg
;
4163 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4164 ssl_ct_validation_cb callback
, void *arg
)
4167 * Since code exists that uses the custom extension handler for CT, look for
4168 * this and throw an error if they have already registered to use CT.
4170 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4171 TLSEXT_TYPE_signed_certificate_timestamp
))
4173 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4174 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4178 ctx
->ct_validation_callback
= callback
;
4179 ctx
->ct_validation_callback_arg
= arg
;
4183 int SSL_ct_is_enabled(const SSL
*s
)
4185 return s
->ct_validation_callback
!= NULL
;
4188 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4190 return ctx
->ct_validation_callback
!= NULL
;
4193 int ssl_validate_ct(SSL
*s
)
4196 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4198 SSL_DANE
*dane
= &s
->dane
;
4199 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4200 const STACK_OF(SCT
) *scts
;
4203 * If no callback is set, the peer is anonymous, or its chain is invalid,
4204 * skip SCT validation - just return success. Applications that continue
4205 * handshakes without certificates, with unverified chains, or pinned leaf
4206 * certificates are outside the scope of the WebPKI and CT.
4208 * The above exclusions notwithstanding the vast majority of peers will
4209 * have rather ordinary certificate chains validated by typical
4210 * applications that perform certificate verification and therefore will
4211 * process SCTs when enabled.
4213 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4214 s
->verify_result
!= X509_V_OK
||
4215 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4219 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4220 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4222 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4223 switch (dane
->mtlsa
->usage
) {
4224 case DANETLS_USAGE_DANE_TA
:
4225 case DANETLS_USAGE_DANE_EE
:
4230 ctx
= CT_POLICY_EVAL_CTX_new();
4232 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4236 issuer
= sk_X509_value(s
->verified_chain
, 1);
4237 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4238 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4239 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4240 CT_POLICY_EVAL_CTX_set_time(ctx
, SSL_SESSION_get_time(SSL_get0_session(s
)));
4242 scts
= SSL_get0_peer_scts(s
);
4245 * This function returns success (> 0) only when all the SCTs are valid, 0
4246 * when some are invalid, and < 0 on various internal errors (out of
4247 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4248 * reason to abort the handshake, that decision is up to the callback.
4249 * Therefore, we error out only in the unexpected case that the return
4250 * value is negative.
4252 * XXX: One might well argue that the return value of this function is an
4253 * unfortunate design choice. Its job is only to determine the validation
4254 * status of each of the provided SCTs. So long as it correctly separates
4255 * the wheat from the chaff it should return success. Failure in this case
4256 * ought to correspond to an inability to carry out its duties.
4258 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4259 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4263 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4265 ret
= 0; /* This function returns 0 on failure */
4268 CT_POLICY_EVAL_CTX_free(ctx
);
4270 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4271 * failure return code here. Also the application may wish the complete
4272 * the handshake, and then disconnect cleanly at a higher layer, after
4273 * checking the verification status of the completed connection.
4275 * We therefore force a certificate verification failure which will be
4276 * visible via SSL_get_verify_result() and cached as part of any resumed
4279 * Note: the permissive callback is for information gathering only, always
4280 * returns success, and does not affect verification status. Only the
4281 * strict callback or a custom application-specified callback can trigger
4282 * connection failure or record a verification error.
4285 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4289 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4291 switch (validation_mode
) {
4293 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4295 case SSL_CT_VALIDATION_PERMISSIVE
:
4296 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4297 case SSL_CT_VALIDATION_STRICT
:
4298 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4302 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4304 switch (validation_mode
) {
4306 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4308 case SSL_CT_VALIDATION_PERMISSIVE
:
4309 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4310 case SSL_CT_VALIDATION_STRICT
:
4311 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4315 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4317 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4320 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4322 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4325 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4327 CTLOG_STORE_free(ctx
->ctlog_store
);
4328 ctx
->ctlog_store
= logs
;
4331 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4333 return ctx
->ctlog_store
;
4336 #endif /* OPENSSL_NO_CT */
4338 void SSL_CTX_set_early_cb(SSL_CTX
*c
, SSL_early_cb_fn cb
, void *arg
)
4341 c
->early_cb_arg
= arg
;
4344 int SSL_early_isv2(SSL
*s
)
4346 if (s
->clienthello
== NULL
)
4348 return s
->clienthello
->isv2
;
4351 unsigned int SSL_early_get0_legacy_version(SSL
*s
)
4353 if (s
->clienthello
== NULL
)
4355 return s
->clienthello
->legacy_version
;
4358 size_t SSL_early_get0_random(SSL
*s
, const unsigned char **out
)
4360 if (s
->clienthello
== NULL
)
4363 *out
= s
->clienthello
->random
;
4364 return SSL3_RANDOM_SIZE
;
4367 size_t SSL_early_get0_session_id(SSL
*s
, const unsigned char **out
)
4369 if (s
->clienthello
== NULL
)
4372 *out
= s
->clienthello
->session_id
;
4373 return s
->clienthello
->session_id_len
;
4376 size_t SSL_early_get0_ciphers(SSL
*s
, const unsigned char **out
)
4378 if (s
->clienthello
== NULL
)
4381 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4382 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4385 size_t SSL_early_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4387 if (s
->clienthello
== NULL
)
4390 *out
= s
->clienthello
->compressions
;
4391 return s
->clienthello
->compressions_len
;
4394 int SSL_early_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4400 if (s
->clienthello
== NULL
)
4402 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4403 r
= s
->clienthello
->pre_proc_exts
+ i
;
4404 if (r
->present
&& r
->type
== type
) {
4406 *out
= PACKET_data(&r
->data
);
4408 *outlen
= PACKET_remaining(&r
->data
);
4415 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4417 ctx
->keylog_callback
= cb
;
4420 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4422 return ctx
->keylog_callback
;
4425 static int nss_keylog_int(const char *prefix
,
4427 const uint8_t *parameter_1
,
4428 size_t parameter_1_len
,
4429 const uint8_t *parameter_2
,
4430 size_t parameter_2_len
)
4433 char *cursor
= NULL
;
4438 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4441 * Our output buffer will contain the following strings, rendered with
4442 * space characters in between, terminated by a NULL character: first the
4443 * prefix, then the first parameter, then the second parameter. The
4444 * meaning of each parameter depends on the specific key material being
4445 * logged. Note that the first and second parameters are encoded in
4446 * hexadecimal, so we need a buffer that is twice their lengths.
4448 prefix_len
= strlen(prefix
);
4449 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4450 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4451 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4455 strcpy(cursor
, prefix
);
4456 cursor
+= prefix_len
;
4459 for (i
= 0; i
< parameter_1_len
; i
++) {
4460 sprintf(cursor
, "%02x", parameter_1
[i
]);
4465 for (i
= 0; i
< parameter_2_len
; i
++) {
4466 sprintf(cursor
, "%02x", parameter_2
[i
]);
4471 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4477 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4478 const uint8_t *encrypted_premaster
,
4479 size_t encrypted_premaster_len
,
4480 const uint8_t *premaster
,
4481 size_t premaster_len
)
4483 if (encrypted_premaster_len
< 8) {
4484 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4488 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4489 return nss_keylog_int("RSA",
4491 encrypted_premaster
,
4497 int ssl_log_secret(SSL
*ssl
,
4499 const uint8_t *secret
,
4502 return nss_keylog_int(label
,
4504 ssl
->s3
->client_random
,
4510 #define SSLV2_CIPHER_LEN 3
4512 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4517 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4519 if (PACKET_remaining(cipher_suites
) == 0) {
4520 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4521 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4525 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4526 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4527 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4528 *al
= SSL_AD_DECODE_ERROR
;
4532 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4533 s
->s3
->tmp
.ciphers_raw
= NULL
;
4534 s
->s3
->tmp
.ciphers_rawlen
= 0;
4537 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4538 PACKET sslv2ciphers
= *cipher_suites
;
4539 unsigned int leadbyte
;
4543 * We store the raw ciphers list in SSLv3+ format so we need to do some
4544 * preprocessing to convert the list first. If there are any SSLv2 only
4545 * ciphersuites with a non-zero leading byte then we are going to
4546 * slightly over allocate because we won't store those. But that isn't a
4549 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4550 s
->s3
->tmp
.ciphers_raw
= raw
;
4552 *al
= SSL_AD_INTERNAL_ERROR
;
4555 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4556 PACKET_remaining(&sslv2ciphers
) > 0;
4557 raw
+= TLS_CIPHER_LEN
) {
4558 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4560 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4563 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4564 *al
= SSL_AD_INTERNAL_ERROR
;
4565 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4566 s
->s3
->tmp
.ciphers_raw
= NULL
;
4567 s
->s3
->tmp
.ciphers_rawlen
= 0;
4571 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4573 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4574 &s
->s3
->tmp
.ciphers_rawlen
)) {
4575 *al
= SSL_AD_INTERNAL_ERROR
;
4583 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
4584 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
4585 STACK_OF(SSL_CIPHER
) **scsvs
)
4590 if (!PACKET_buf_init(&pkt
, bytes
, len
))
4592 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
4595 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
4596 STACK_OF(SSL_CIPHER
) **skp
,
4597 STACK_OF(SSL_CIPHER
) **scsvs_out
,
4598 int sslv2format
, int *al
)
4600 const SSL_CIPHER
*c
;
4601 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
4602 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
4604 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
4605 unsigned char cipher
[SSLV2_CIPHER_LEN
];
4607 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4609 if (PACKET_remaining(cipher_suites
) == 0) {
4610 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4611 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4615 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4616 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
4617 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4618 *al
= SSL_AD_DECODE_ERROR
;
4622 sk
= sk_SSL_CIPHER_new_null();
4623 scsvs
= sk_SSL_CIPHER_new_null();
4624 if (sk
== NULL
|| scsvs
== NULL
) {
4625 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4626 *al
= SSL_AD_INTERNAL_ERROR
;
4630 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
4632 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
4633 * first byte set to zero, while true SSLv2 ciphers have a non-zero
4634 * first byte. We don't support any true SSLv2 ciphers, so skip them.
4636 if (sslv2format
&& cipher
[0] != '\0')
4639 /* For SSLv2-compat, ignore leading 0-byte. */
4640 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
4642 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
4643 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
4644 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
4645 *al
= SSL_AD_INTERNAL_ERROR
;
4650 if (PACKET_remaining(cipher_suites
) > 0) {
4651 *al
= SSL_AD_INTERNAL_ERROR
;
4652 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_INTERNAL_ERROR
);
4659 sk_SSL_CIPHER_free(sk
);
4660 if (scsvs_out
!= NULL
)
4663 sk_SSL_CIPHER_free(scsvs
);
4666 sk_SSL_CIPHER_free(sk
);
4667 sk_SSL_CIPHER_free(scsvs
);