2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
14 #include <openssl/objects.h>
15 #include <openssl/lhash.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/ocsp.h>
19 #include <openssl/dh.h>
20 #include <openssl/engine.h>
21 #include <openssl/async.h>
22 #include <openssl/ct.h>
23 #include "internal/cryptlib.h"
24 #include "internal/rand.h"
25 #include "internal/refcount.h"
27 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
29 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
31 * evil casts, but these functions are only called if there's a library
34 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
35 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
36 ssl_undefined_function
,
37 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
38 ssl_undefined_function
,
39 (int (*)(SSL
*, int))ssl_undefined_function
,
40 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
41 ssl_undefined_function
,
42 NULL
, /* client_finished_label */
43 0, /* client_finished_label_len */
44 NULL
, /* server_finished_label */
45 0, /* server_finished_label_len */
46 (int (*)(int))ssl_undefined_function
,
47 (int (*)(SSL
*, unsigned char *, size_t, const char *,
48 size_t, const unsigned char *, size_t,
49 int use_context
))ssl_undefined_function
,
52 struct ssl_async_args
{
56 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
58 int (*func_read
) (SSL
*, void *, size_t, size_t *);
59 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
60 int (*func_other
) (SSL
*);
70 DANETLS_MATCHING_FULL
, 0, NID_undef
73 DANETLS_MATCHING_2256
, 1, NID_sha256
76 DANETLS_MATCHING_2512
, 2, NID_sha512
80 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
84 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
85 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
88 if (dctx
->mdevp
!= NULL
)
91 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
92 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
94 if (mdord
== NULL
|| mdevp
== NULL
) {
97 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
101 /* Install default entries */
102 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
105 if (dane_mds
[i
].nid
== NID_undef
||
106 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
108 mdevp
[dane_mds
[i
].mtype
] = md
;
109 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
119 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
121 OPENSSL_free(dctx
->mdevp
);
124 OPENSSL_free(dctx
->mdord
);
129 static void tlsa_free(danetls_record
*t
)
133 OPENSSL_free(t
->data
);
134 EVP_PKEY_free(t
->spki
);
138 static void dane_final(SSL_DANE
*dane
)
140 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
143 sk_X509_pop_free(dane
->certs
, X509_free
);
146 X509_free(dane
->mcert
);
154 * dane_copy - Copy dane configuration, sans verification state.
156 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
161 if (!DANETLS_ENABLED(&from
->dane
))
164 dane_final(&to
->dane
);
165 to
->dane
.flags
= from
->dane
.flags
;
166 to
->dane
.dctx
= &to
->ctx
->dane
;
167 to
->dane
.trecs
= sk_danetls_record_new_null();
169 if (to
->dane
.trecs
== NULL
) {
170 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
174 num
= sk_danetls_record_num(from
->dane
.trecs
);
175 for (i
= 0; i
< num
; ++i
) {
176 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
178 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
179 t
->data
, t
->dlen
) <= 0)
185 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
186 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
190 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
191 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
195 if (mtype
> dctx
->mdmax
) {
196 const EVP_MD
**mdevp
;
198 int n
= ((int)mtype
) + 1;
200 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
202 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
207 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
209 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
214 /* Zero-fill any gaps */
215 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
223 dctx
->mdevp
[mtype
] = md
;
224 /* Coerce ordinal of disabled matching types to 0 */
225 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
230 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
232 if (mtype
> dane
->dctx
->mdmax
)
234 return dane
->dctx
->mdevp
[mtype
];
237 static int dane_tlsa_add(SSL_DANE
*dane
,
240 uint8_t mtype
, unsigned char *data
, size_t dlen
)
243 const EVP_MD
*md
= NULL
;
244 int ilen
= (int)dlen
;
248 if (dane
->trecs
== NULL
) {
249 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
253 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
254 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
258 if (usage
> DANETLS_USAGE_LAST
) {
259 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
263 if (selector
> DANETLS_SELECTOR_LAST
) {
264 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
268 if (mtype
!= DANETLS_MATCHING_FULL
) {
269 md
= tlsa_md_get(dane
, mtype
);
271 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
276 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
277 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
281 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
285 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
286 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
291 t
->selector
= selector
;
293 t
->data
= OPENSSL_malloc(dlen
);
294 if (t
->data
== NULL
) {
296 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
299 memcpy(t
->data
, data
, dlen
);
302 /* Validate and cache full certificate or public key */
303 if (mtype
== DANETLS_MATCHING_FULL
) {
304 const unsigned char *p
= data
;
306 EVP_PKEY
*pkey
= NULL
;
309 case DANETLS_SELECTOR_CERT
:
310 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
311 dlen
!= (size_t)(p
- data
)) {
313 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
316 if (X509_get0_pubkey(cert
) == NULL
) {
318 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
322 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
328 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
329 * records that contain full certificates of trust-anchors that are
330 * not present in the wire chain. For usage PKIX-TA(0), we augment
331 * the chain with untrusted Full(0) certificates from DNS, in case
332 * they are missing from the chain.
334 if ((dane
->certs
== NULL
&&
335 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
336 !sk_X509_push(dane
->certs
, cert
)) {
337 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
344 case DANETLS_SELECTOR_SPKI
:
345 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
346 dlen
!= (size_t)(p
- data
)) {
348 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
353 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
354 * records that contain full bare keys of trust-anchors that are
355 * not present in the wire chain.
357 if (usage
== DANETLS_USAGE_DANE_TA
)
366 * Find the right insertion point for the new record.
368 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
369 * they can be processed first, as they require no chain building, and no
370 * expiration or hostname checks. Because DANE-EE(3) is numerically
371 * largest, this is accomplished via descending sort by "usage".
373 * We also sort in descending order by matching ordinal to simplify
374 * the implementation of digest agility in the verification code.
376 * The choice of order for the selector is not significant, so we
377 * use the same descending order for consistency.
379 num
= sk_danetls_record_num(dane
->trecs
);
380 for (i
= 0; i
< num
; ++i
) {
381 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
383 if (rec
->usage
> usage
)
385 if (rec
->usage
< usage
)
387 if (rec
->selector
> selector
)
389 if (rec
->selector
< selector
)
391 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
396 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
398 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
401 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
407 * Return 0 if there is only one version configured and it was disabled
408 * at configure time. Return 1 otherwise.
410 static int ssl_check_allowed_versions(int min_version
, int max_version
)
412 int minisdtls
= 0, maxisdtls
= 0;
414 /* Figure out if we're doing DTLS versions or TLS versions */
415 if (min_version
== DTLS1_BAD_VER
416 || min_version
>> 8 == DTLS1_VERSION_MAJOR
)
418 if (max_version
== DTLS1_BAD_VER
419 || max_version
>> 8 == DTLS1_VERSION_MAJOR
)
421 /* A wildcard version of 0 could be DTLS or TLS. */
422 if ((minisdtls
&& !maxisdtls
&& max_version
!= 0)
423 || (maxisdtls
&& !minisdtls
&& min_version
!= 0)) {
424 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
428 if (minisdtls
|| maxisdtls
) {
429 /* Do DTLS version checks. */
430 if (min_version
== 0)
431 /* Ignore DTLS1_BAD_VER */
432 min_version
= DTLS1_VERSION
;
433 if (max_version
== 0)
434 max_version
= DTLS1_2_VERSION
;
435 #ifdef OPENSSL_NO_DTLS1_2
436 if (max_version
== DTLS1_2_VERSION
)
437 max_version
= DTLS1_VERSION
;
439 #ifdef OPENSSL_NO_DTLS1
440 if (min_version
== DTLS1_VERSION
)
441 min_version
= DTLS1_2_VERSION
;
443 /* Done massaging versions; do the check. */
445 #ifdef OPENSSL_NO_DTLS1
446 || (DTLS_VERSION_GE(min_version
, DTLS1_VERSION
)
447 && DTLS_VERSION_GE(DTLS1_VERSION
, max_version
))
449 #ifdef OPENSSL_NO_DTLS1_2
450 || (DTLS_VERSION_GE(min_version
, DTLS1_2_VERSION
)
451 && DTLS_VERSION_GE(DTLS1_2_VERSION
, max_version
))
456 /* Regular TLS version checks. */
457 if (min_version
== 0)
458 min_version
= SSL3_VERSION
;
459 if (max_version
== 0)
460 max_version
= TLS1_3_VERSION
;
461 #ifdef OPENSSL_NO_TLS1_3
462 if (max_version
== TLS1_3_VERSION
)
463 max_version
= TLS1_2_VERSION
;
465 #ifdef OPENSSL_NO_TLS1_2
466 if (max_version
== TLS1_2_VERSION
)
467 max_version
= TLS1_1_VERSION
;
469 #ifdef OPENSSL_NO_TLS1_1
470 if (max_version
== TLS1_1_VERSION
)
471 max_version
= TLS1_VERSION
;
473 #ifdef OPENSSL_NO_TLS1
474 if (max_version
== TLS1_VERSION
)
475 max_version
= SSL3_VERSION
;
477 #ifdef OPENSSL_NO_SSL3
478 if (min_version
== SSL3_VERSION
)
479 min_version
= TLS1_VERSION
;
481 #ifdef OPENSSL_NO_TLS1
482 if (min_version
== TLS1_VERSION
)
483 min_version
= TLS1_1_VERSION
;
485 #ifdef OPENSSL_NO_TLS1_1
486 if (min_version
== TLS1_1_VERSION
)
487 min_version
= TLS1_2_VERSION
;
489 #ifdef OPENSSL_NO_TLS1_2
490 if (min_version
== TLS1_2_VERSION
)
491 min_version
= TLS1_3_VERSION
;
493 /* Done massaging versions; do the check. */
495 #ifdef OPENSSL_NO_SSL3
496 || (min_version
<= SSL3_VERSION
&& SSL3_VERSION
<= max_version
)
498 #ifdef OPENSSL_NO_TLS1
499 || (min_version
<= TLS1_VERSION
&& TLS1_VERSION
<= max_version
)
501 #ifdef OPENSSL_NO_TLS1_1
502 || (min_version
<= TLS1_1_VERSION
&& TLS1_1_VERSION
<= max_version
)
504 #ifdef OPENSSL_NO_TLS1_2
505 || (min_version
<= TLS1_2_VERSION
&& TLS1_2_VERSION
<= max_version
)
507 #ifdef OPENSSL_NO_TLS1_3
508 || (min_version
<= TLS1_3_VERSION
&& TLS1_3_VERSION
<= max_version
)
516 static void clear_ciphers(SSL
*s
)
518 /* clear the current cipher */
519 ssl_clear_cipher_ctx(s
);
520 ssl_clear_hash_ctx(&s
->read_hash
);
521 ssl_clear_hash_ctx(&s
->write_hash
);
524 int SSL_clear(SSL
*s
)
526 if (s
->method
== NULL
) {
527 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
531 if (ssl_clear_bad_session(s
)) {
532 SSL_SESSION_free(s
->session
);
535 SSL_SESSION_free(s
->psksession
);
536 s
->psksession
= NULL
;
537 OPENSSL_free(s
->psksession_id
);
538 s
->psksession_id
= NULL
;
539 s
->psksession_id_len
= 0;
545 if (s
->renegotiate
) {
546 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
550 ossl_statem_clear(s
);
552 s
->version
= s
->method
->version
;
553 s
->client_version
= s
->version
;
554 s
->rwstate
= SSL_NOTHING
;
556 BUF_MEM_free(s
->init_buf
);
561 s
->key_update
= SSL_KEY_UPDATE_NONE
;
563 /* Reset DANE verification result state */
566 X509_free(s
->dane
.mcert
);
567 s
->dane
.mcert
= NULL
;
568 s
->dane
.mtlsa
= NULL
;
570 /* Clear the verification result peername */
571 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
574 * Check to see if we were changed into a different method, if so, revert
577 if (s
->method
!= s
->ctx
->method
) {
578 s
->method
->ssl_free(s
);
579 s
->method
= s
->ctx
->method
;
580 if (!s
->method
->ssl_new(s
))
583 if (!s
->method
->ssl_clear(s
))
587 RECORD_LAYER_clear(&s
->rlayer
);
592 /** Used to change an SSL_CTXs default SSL method type */
593 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
595 STACK_OF(SSL_CIPHER
) *sk
;
599 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
600 &(ctx
->cipher_list_by_id
),
601 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
602 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
603 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
609 SSL
*SSL_new(SSL_CTX
*ctx
)
614 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
617 if (ctx
->method
== NULL
) {
618 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
622 s
= OPENSSL_zalloc(sizeof(*s
));
626 s
->lock
= CRYPTO_THREAD_lock_new();
631 * If not using the standard RAND (say for fuzzing), then don't use a
634 if (RAND_get_rand_method() == RAND_OpenSSL()) {
635 s
->drbg
= RAND_DRBG_new(NID_aes_128_ctr
, RAND_DRBG_FLAG_CTR_USE_DF
,
636 RAND_DRBG_get0_global());
638 || RAND_DRBG_instantiate(s
->drbg
, NULL
, 0) == 0) {
639 CRYPTO_THREAD_lock_free(s
->lock
);
644 RECORD_LAYER_init(&s
->rlayer
, s
);
646 s
->options
= ctx
->options
;
647 s
->dane
.flags
= ctx
->dane
.flags
;
648 s
->min_proto_version
= ctx
->min_proto_version
;
649 s
->max_proto_version
= ctx
->max_proto_version
;
651 s
->max_cert_list
= ctx
->max_cert_list
;
653 s
->max_early_data
= ctx
->max_early_data
;
656 * Earlier library versions used to copy the pointer to the CERT, not
657 * its contents; only when setting new parameters for the per-SSL
658 * copy, ssl_cert_new would be called (and the direct reference to
659 * the per-SSL_CTX settings would be lost, but those still were
660 * indirectly accessed for various purposes, and for that reason they
661 * used to be known as s->ctx->default_cert). Now we don't look at the
662 * SSL_CTX's CERT after having duplicated it once.
664 s
->cert
= ssl_cert_dup(ctx
->cert
);
668 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
669 s
->msg_callback
= ctx
->msg_callback
;
670 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
671 s
->verify_mode
= ctx
->verify_mode
;
672 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
673 s
->record_padding_cb
= ctx
->record_padding_cb
;
674 s
->record_padding_arg
= ctx
->record_padding_arg
;
675 s
->block_padding
= ctx
->block_padding
;
676 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
677 if (!ossl_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
))
679 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
680 s
->verify_callback
= ctx
->default_verify_callback
;
681 s
->generate_session_id
= ctx
->generate_session_id
;
683 s
->param
= X509_VERIFY_PARAM_new();
684 if (s
->param
== NULL
)
686 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
687 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
688 s
->max_send_fragment
= ctx
->max_send_fragment
;
689 s
->split_send_fragment
= ctx
->split_send_fragment
;
690 s
->max_pipelines
= ctx
->max_pipelines
;
691 if (s
->max_pipelines
> 1)
692 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
693 if (ctx
->default_read_buf_len
> 0)
694 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
699 s
->ext
.debug_arg
= NULL
;
700 s
->ext
.ticket_expected
= 0;
701 s
->ext
.status_type
= ctx
->ext
.status_type
;
702 s
->ext
.status_expected
= 0;
703 s
->ext
.ocsp
.ids
= NULL
;
704 s
->ext
.ocsp
.exts
= NULL
;
705 s
->ext
.ocsp
.resp
= NULL
;
706 s
->ext
.ocsp
.resp_len
= 0;
708 s
->session_ctx
= ctx
;
709 #ifndef OPENSSL_NO_EC
710 if (ctx
->ext
.ecpointformats
) {
711 s
->ext
.ecpointformats
=
712 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
713 ctx
->ext
.ecpointformats_len
);
714 if (!s
->ext
.ecpointformats
)
716 s
->ext
.ecpointformats_len
=
717 ctx
->ext
.ecpointformats_len
;
719 if (ctx
->ext
.supportedgroups
) {
720 s
->ext
.supportedgroups
=
721 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
722 ctx
->ext
.supportedgroups_len
723 * sizeof(ctx
->ext
.supportedgroups
));
724 if (!s
->ext
.supportedgroups
)
726 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
729 #ifndef OPENSSL_NO_NEXTPROTONEG
733 if (s
->ctx
->ext
.alpn
) {
734 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
735 if (s
->ext
.alpn
== NULL
)
737 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
738 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
741 s
->verified_chain
= NULL
;
742 s
->verify_result
= X509_V_OK
;
744 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
745 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
747 s
->method
= ctx
->method
;
749 s
->key_update
= SSL_KEY_UPDATE_NONE
;
751 if (!s
->method
->ssl_new(s
))
754 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
759 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
762 #ifndef OPENSSL_NO_PSK
763 s
->psk_client_callback
= ctx
->psk_client_callback
;
764 s
->psk_server_callback
= ctx
->psk_server_callback
;
766 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
767 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
771 #ifndef OPENSSL_NO_CT
772 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
773 ctx
->ct_validation_callback_arg
))
780 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
784 int SSL_is_dtls(const SSL
*s
)
786 return SSL_IS_DTLS(s
) ? 1 : 0;
789 int SSL_up_ref(SSL
*s
)
793 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
796 REF_PRINT_COUNT("SSL", s
);
797 REF_ASSERT_ISNT(i
< 2);
798 return ((i
> 1) ? 1 : 0);
801 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
802 unsigned int sid_ctx_len
)
804 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
805 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
806 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
809 ctx
->sid_ctx_length
= sid_ctx_len
;
810 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
815 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
816 unsigned int sid_ctx_len
)
818 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
819 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
820 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
823 ssl
->sid_ctx_length
= sid_ctx_len
;
824 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
829 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
831 CRYPTO_THREAD_write_lock(ctx
->lock
);
832 ctx
->generate_session_id
= cb
;
833 CRYPTO_THREAD_unlock(ctx
->lock
);
837 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
839 CRYPTO_THREAD_write_lock(ssl
->lock
);
840 ssl
->generate_session_id
= cb
;
841 CRYPTO_THREAD_unlock(ssl
->lock
);
845 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
849 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
850 * we can "construct" a session to give us the desired check - i.e. to
851 * find if there's a session in the hash table that would conflict with
852 * any new session built out of this id/id_len and the ssl_version in use
857 if (id_len
> sizeof r
.session_id
)
860 r
.ssl_version
= ssl
->version
;
861 r
.session_id_length
= id_len
;
862 memcpy(r
.session_id
, id
, id_len
);
864 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
865 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
866 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
870 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
872 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
875 int SSL_set_purpose(SSL
*s
, int purpose
)
877 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
880 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
882 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
885 int SSL_set_trust(SSL
*s
, int trust
)
887 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
890 int SSL_set1_host(SSL
*s
, const char *hostname
)
892 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
895 int SSL_add1_host(SSL
*s
, const char *hostname
)
897 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
900 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
902 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
905 const char *SSL_get0_peername(SSL
*s
)
907 return X509_VERIFY_PARAM_get0_peername(s
->param
);
910 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
912 return dane_ctx_enable(&ctx
->dane
);
915 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
917 unsigned long orig
= ctx
->dane
.flags
;
919 ctx
->dane
.flags
|= flags
;
923 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
925 unsigned long orig
= ctx
->dane
.flags
;
927 ctx
->dane
.flags
&= ~flags
;
931 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
933 SSL_DANE
*dane
= &s
->dane
;
935 if (s
->ctx
->dane
.mdmax
== 0) {
936 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
939 if (dane
->trecs
!= NULL
) {
940 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
945 * Default SNI name. This rejects empty names, while set1_host below
946 * accepts them and disables host name checks. To avoid side-effects with
947 * invalid input, set the SNI name first.
949 if (s
->ext
.hostname
== NULL
) {
950 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
951 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
956 /* Primary RFC6125 reference identifier */
957 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
958 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
964 dane
->dctx
= &s
->ctx
->dane
;
965 dane
->trecs
= sk_danetls_record_new_null();
967 if (dane
->trecs
== NULL
) {
968 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
974 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
976 unsigned long orig
= ssl
->dane
.flags
;
978 ssl
->dane
.flags
|= flags
;
982 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
984 unsigned long orig
= ssl
->dane
.flags
;
986 ssl
->dane
.flags
&= ~flags
;
990 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
992 SSL_DANE
*dane
= &s
->dane
;
994 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
998 *mcert
= dane
->mcert
;
1000 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1005 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1006 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1008 SSL_DANE
*dane
= &s
->dane
;
1010 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1014 *usage
= dane
->mtlsa
->usage
;
1016 *selector
= dane
->mtlsa
->selector
;
1018 *mtype
= dane
->mtlsa
->mtype
;
1020 *data
= dane
->mtlsa
->data
;
1022 *dlen
= dane
->mtlsa
->dlen
;
1027 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1032 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1033 uint8_t mtype
, unsigned char *data
, size_t dlen
)
1035 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1038 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1041 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1044 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1046 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1049 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1051 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1054 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1059 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1064 void SSL_certs_clear(SSL
*s
)
1066 ssl_cert_clear_certs(s
->cert
);
1069 void SSL_free(SSL
*s
)
1076 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1077 REF_PRINT_COUNT("SSL", s
);
1080 REF_ASSERT_ISNT(i
< 0);
1082 X509_VERIFY_PARAM_free(s
->param
);
1083 dane_final(&s
->dane
);
1084 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1086 /* Ignore return value */
1087 ssl_free_wbio_buffer(s
);
1089 BIO_free_all(s
->wbio
);
1090 BIO_free_all(s
->rbio
);
1092 BUF_MEM_free(s
->init_buf
);
1094 /* add extra stuff */
1095 sk_SSL_CIPHER_free(s
->cipher_list
);
1096 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1098 /* Make the next call work :-) */
1099 if (s
->session
!= NULL
) {
1100 ssl_clear_bad_session(s
);
1101 SSL_SESSION_free(s
->session
);
1103 SSL_SESSION_free(s
->psksession
);
1104 OPENSSL_free(s
->psksession_id
);
1108 ssl_cert_free(s
->cert
);
1109 /* Free up if allocated */
1111 OPENSSL_free(s
->ext
.hostname
);
1112 SSL_CTX_free(s
->session_ctx
);
1113 #ifndef OPENSSL_NO_EC
1114 OPENSSL_free(s
->ext
.ecpointformats
);
1115 OPENSSL_free(s
->ext
.supportedgroups
);
1116 #endif /* OPENSSL_NO_EC */
1117 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1118 #ifndef OPENSSL_NO_OCSP
1119 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1121 #ifndef OPENSSL_NO_CT
1122 SCT_LIST_free(s
->scts
);
1123 OPENSSL_free(s
->ext
.scts
);
1125 OPENSSL_free(s
->ext
.ocsp
.resp
);
1126 OPENSSL_free(s
->ext
.alpn
);
1127 OPENSSL_free(s
->ext
.tls13_cookie
);
1128 OPENSSL_free(s
->clienthello
);
1130 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1132 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1134 if (s
->method
!= NULL
)
1135 s
->method
->ssl_free(s
);
1137 RECORD_LAYER_release(&s
->rlayer
);
1139 SSL_CTX_free(s
->ctx
);
1141 ASYNC_WAIT_CTX_free(s
->waitctx
);
1143 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1144 OPENSSL_free(s
->ext
.npn
);
1147 #ifndef OPENSSL_NO_SRTP
1148 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1151 RAND_DRBG_free(s
->drbg
);
1152 CRYPTO_THREAD_lock_free(s
->lock
);
1157 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1159 BIO_free_all(s
->rbio
);
1163 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1166 * If the output buffering BIO is still in place, remove it
1168 if (s
->bbio
!= NULL
)
1169 s
->wbio
= BIO_pop(s
->wbio
);
1171 BIO_free_all(s
->wbio
);
1174 /* Re-attach |bbio| to the new |wbio|. */
1175 if (s
->bbio
!= NULL
)
1176 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1179 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1182 * For historical reasons, this function has many different cases in
1183 * ownership handling.
1186 /* If nothing has changed, do nothing */
1187 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1191 * If the two arguments are equal then one fewer reference is granted by the
1192 * caller than we want to take
1194 if (rbio
!= NULL
&& rbio
== wbio
)
1198 * If only the wbio is changed only adopt one reference.
1200 if (rbio
== SSL_get_rbio(s
)) {
1201 SSL_set0_wbio(s
, wbio
);
1205 * There is an asymmetry here for historical reasons. If only the rbio is
1206 * changed AND the rbio and wbio were originally different, then we only
1207 * adopt one reference.
1209 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1210 SSL_set0_rbio(s
, rbio
);
1214 /* Otherwise, adopt both references. */
1215 SSL_set0_rbio(s
, rbio
);
1216 SSL_set0_wbio(s
, wbio
);
1219 BIO
*SSL_get_rbio(const SSL
*s
)
1224 BIO
*SSL_get_wbio(const SSL
*s
)
1226 if (s
->bbio
!= NULL
) {
1228 * If |bbio| is active, the true caller-configured BIO is its
1231 return BIO_next(s
->bbio
);
1236 int SSL_get_fd(const SSL
*s
)
1238 return SSL_get_rfd(s
);
1241 int SSL_get_rfd(const SSL
*s
)
1246 b
= SSL_get_rbio(s
);
1247 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1249 BIO_get_fd(r
, &ret
);
1253 int SSL_get_wfd(const SSL
*s
)
1258 b
= SSL_get_wbio(s
);
1259 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1261 BIO_get_fd(r
, &ret
);
1265 #ifndef OPENSSL_NO_SOCK
1266 int SSL_set_fd(SSL
*s
, int fd
)
1271 bio
= BIO_new(BIO_s_socket());
1274 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1277 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1278 SSL_set_bio(s
, bio
, bio
);
1284 int SSL_set_wfd(SSL
*s
, int fd
)
1286 BIO
*rbio
= SSL_get_rbio(s
);
1288 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1289 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1290 BIO
*bio
= BIO_new(BIO_s_socket());
1293 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1296 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1297 SSL_set0_wbio(s
, bio
);
1300 SSL_set0_wbio(s
, rbio
);
1305 int SSL_set_rfd(SSL
*s
, int fd
)
1307 BIO
*wbio
= SSL_get_wbio(s
);
1309 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1310 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1311 BIO
*bio
= BIO_new(BIO_s_socket());
1314 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1317 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1318 SSL_set0_rbio(s
, bio
);
1321 SSL_set0_rbio(s
, wbio
);
1328 /* return length of latest Finished message we sent, copy to 'buf' */
1329 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1333 if (s
->s3
!= NULL
) {
1334 ret
= s
->s3
->tmp
.finish_md_len
;
1337 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1342 /* return length of latest Finished message we expected, copy to 'buf' */
1343 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1347 if (s
->s3
!= NULL
) {
1348 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1351 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1356 int SSL_get_verify_mode(const SSL
*s
)
1358 return (s
->verify_mode
);
1361 int SSL_get_verify_depth(const SSL
*s
)
1363 return X509_VERIFY_PARAM_get_depth(s
->param
);
1366 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1367 return (s
->verify_callback
);
1370 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1372 return (ctx
->verify_mode
);
1375 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1377 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1380 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1381 return (ctx
->default_verify_callback
);
1384 void SSL_set_verify(SSL
*s
, int mode
,
1385 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1387 s
->verify_mode
= mode
;
1388 if (callback
!= NULL
)
1389 s
->verify_callback
= callback
;
1392 void SSL_set_verify_depth(SSL
*s
, int depth
)
1394 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1397 void SSL_set_read_ahead(SSL
*s
, int yes
)
1399 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1402 int SSL_get_read_ahead(const SSL
*s
)
1404 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1407 int SSL_pending(const SSL
*s
)
1409 size_t pending
= s
->method
->ssl_pending(s
);
1412 * SSL_pending cannot work properly if read-ahead is enabled
1413 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1414 * impossible to fix since SSL_pending cannot report errors that may be
1415 * observed while scanning the new data. (Note that SSL_pending() is
1416 * often used as a boolean value, so we'd better not return -1.)
1418 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1419 * we just return INT_MAX.
1421 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1424 int SSL_has_pending(const SSL
*s
)
1427 * Similar to SSL_pending() but returns a 1 to indicate that we have
1428 * unprocessed data available or 0 otherwise (as opposed to the number of
1429 * bytes available). Unlike SSL_pending() this will take into account
1430 * read_ahead data. A 1 return simply indicates that we have unprocessed
1431 * data. That data may not result in any application data, or we may fail
1432 * to parse the records for some reason.
1434 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1437 return RECORD_LAYER_read_pending(&s
->rlayer
);
1440 X509
*SSL_get_peer_certificate(const SSL
*s
)
1444 if ((s
== NULL
) || (s
->session
== NULL
))
1447 r
= s
->session
->peer
;
1457 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1461 if ((s
== NULL
) || (s
->session
== NULL
))
1464 r
= s
->session
->peer_chain
;
1467 * If we are a client, cert_chain includes the peer's own certificate; if
1468 * we are a server, it does not.
1475 * Now in theory, since the calling process own 't' it should be safe to
1476 * modify. We need to be able to read f without being hassled
1478 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1481 /* Do we need to to SSL locking? */
1482 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1487 * what if we are setup for one protocol version but want to talk another
1489 if (t
->method
!= f
->method
) {
1490 t
->method
->ssl_free(t
);
1491 t
->method
= f
->method
;
1492 if (t
->method
->ssl_new(t
) == 0)
1496 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1497 ssl_cert_free(t
->cert
);
1499 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1506 /* Fix this so it checks all the valid key/cert options */
1507 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1509 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1510 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1513 if (ctx
->cert
->key
->privatekey
== NULL
) {
1514 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1517 return (X509_check_private_key
1518 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1521 /* Fix this function so that it takes an optional type parameter */
1522 int SSL_check_private_key(const SSL
*ssl
)
1525 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1528 if (ssl
->cert
->key
->x509
== NULL
) {
1529 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1532 if (ssl
->cert
->key
->privatekey
== NULL
) {
1533 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1536 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1537 ssl
->cert
->key
->privatekey
));
1540 int SSL_waiting_for_async(SSL
*s
)
1548 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1550 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1554 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1557 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1558 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1560 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1564 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1568 int SSL_accept(SSL
*s
)
1570 if (s
->handshake_func
== NULL
) {
1571 /* Not properly initialized yet */
1572 SSL_set_accept_state(s
);
1575 return SSL_do_handshake(s
);
1578 int SSL_connect(SSL
*s
)
1580 if (s
->handshake_func
== NULL
) {
1581 /* Not properly initialized yet */
1582 SSL_set_connect_state(s
);
1585 return SSL_do_handshake(s
);
1588 long SSL_get_default_timeout(const SSL
*s
)
1590 return (s
->method
->get_timeout());
1593 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1594 int (*func
) (void *))
1597 if (s
->waitctx
== NULL
) {
1598 s
->waitctx
= ASYNC_WAIT_CTX_new();
1599 if (s
->waitctx
== NULL
)
1602 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1603 sizeof(struct ssl_async_args
))) {
1605 s
->rwstate
= SSL_NOTHING
;
1606 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1609 s
->rwstate
= SSL_ASYNC_PAUSED
;
1612 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1618 s
->rwstate
= SSL_NOTHING
;
1619 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1620 /* Shouldn't happen */
1625 static int ssl_io_intern(void *vargs
)
1627 struct ssl_async_args
*args
;
1632 args
= (struct ssl_async_args
*)vargs
;
1636 switch (args
->type
) {
1638 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1640 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1642 return args
->f
.func_other(s
);
1647 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1649 if (s
->handshake_func
== NULL
) {
1650 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1654 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1655 s
->rwstate
= SSL_NOTHING
;
1659 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1660 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1661 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1665 * If we are a client and haven't received the ServerHello etc then we
1668 ossl_statem_check_finish_init(s
, 0);
1670 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1671 struct ssl_async_args args
;
1677 args
.type
= READFUNC
;
1678 args
.f
.func_read
= s
->method
->ssl_read
;
1680 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1681 *readbytes
= s
->asyncrw
;
1684 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1688 int SSL_read(SSL
*s
, void *buf
, int num
)
1694 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1698 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1701 * The cast is safe here because ret should be <= INT_MAX because num is
1705 ret
= (int)readbytes
;
1710 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1712 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1719 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1724 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1725 return SSL_READ_EARLY_DATA_ERROR
;
1728 switch (s
->early_data_state
) {
1729 case SSL_EARLY_DATA_NONE
:
1730 if (!SSL_in_before(s
)) {
1731 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1732 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1733 return SSL_READ_EARLY_DATA_ERROR
;
1737 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1738 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1739 ret
= SSL_accept(s
);
1742 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1743 return SSL_READ_EARLY_DATA_ERROR
;
1747 case SSL_EARLY_DATA_READ_RETRY
:
1748 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1749 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1750 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1752 * State machine will update early_data_state to
1753 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1756 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1757 != SSL_EARLY_DATA_FINISHED_READING
)) {
1758 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1759 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1760 : SSL_READ_EARLY_DATA_ERROR
;
1763 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1766 return SSL_READ_EARLY_DATA_FINISH
;
1769 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1770 return SSL_READ_EARLY_DATA_ERROR
;
1774 int SSL_get_early_data_status(const SSL
*s
)
1776 return s
->ext
.early_data
;
1779 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1781 if (s
->handshake_func
== NULL
) {
1782 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1786 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1789 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1790 struct ssl_async_args args
;
1796 args
.type
= READFUNC
;
1797 args
.f
.func_read
= s
->method
->ssl_peek
;
1799 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1800 *readbytes
= s
->asyncrw
;
1803 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1807 int SSL_peek(SSL
*s
, void *buf
, int num
)
1813 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1817 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1820 * The cast is safe here because ret should be <= INT_MAX because num is
1824 ret
= (int)readbytes
;
1830 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1832 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1839 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1841 if (s
->handshake_func
== NULL
) {
1842 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1846 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1847 s
->rwstate
= SSL_NOTHING
;
1848 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1852 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1853 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1854 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1855 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1858 /* If we are a client and haven't sent the Finished we better do that */
1859 ossl_statem_check_finish_init(s
, 1);
1861 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1863 struct ssl_async_args args
;
1866 args
.buf
= (void *)buf
;
1868 args
.type
= WRITEFUNC
;
1869 args
.f
.func_write
= s
->method
->ssl_write
;
1871 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1872 *written
= s
->asyncrw
;
1875 return s
->method
->ssl_write(s
, buf
, num
, written
);
1879 int SSL_write(SSL
*s
, const void *buf
, int num
)
1885 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1889 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1892 * The cast is safe here because ret should be <= INT_MAX because num is
1901 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1903 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1910 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1912 int ret
, early_data_state
;
1914 switch (s
->early_data_state
) {
1915 case SSL_EARLY_DATA_NONE
:
1917 || !SSL_in_before(s
)
1918 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
1919 && (s
->psk_use_session_cb
== NULL
))) {
1920 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1921 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1926 case SSL_EARLY_DATA_CONNECT_RETRY
:
1927 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1928 ret
= SSL_connect(s
);
1931 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1936 case SSL_EARLY_DATA_WRITE_RETRY
:
1937 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1938 ret
= SSL_write_ex(s
, buf
, num
, written
);
1939 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1942 case SSL_EARLY_DATA_FINISHED_READING
:
1943 case SSL_EARLY_DATA_READ_RETRY
:
1944 early_data_state
= s
->early_data_state
;
1945 /* We are a server writing to an unauthenticated client */
1946 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1947 ret
= SSL_write_ex(s
, buf
, num
, written
);
1948 s
->early_data_state
= early_data_state
;
1952 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1957 int SSL_shutdown(SSL
*s
)
1960 * Note that this function behaves differently from what one might
1961 * expect. Return values are 0 for no success (yet), 1 for success; but
1962 * calling it once is usually not enough, even if blocking I/O is used
1963 * (see ssl3_shutdown).
1966 if (s
->handshake_func
== NULL
) {
1967 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1971 if (!SSL_in_init(s
)) {
1972 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1973 struct ssl_async_args args
;
1976 args
.type
= OTHERFUNC
;
1977 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1979 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1981 return s
->method
->ssl_shutdown(s
);
1984 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1989 int SSL_key_update(SSL
*s
, int updatetype
)
1992 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1993 * negotiated, and that it is appropriate to call SSL_key_update() instead
1994 * of SSL_renegotiate().
1996 if (!SSL_IS_TLS13(s
)) {
1997 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2001 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2002 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2003 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2007 if (!SSL_is_init_finished(s
)) {
2008 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2012 ossl_statem_set_in_init(s
, 1);
2013 s
->key_update
= updatetype
;
2017 int SSL_get_key_update_type(SSL
*s
)
2019 return s
->key_update
;
2022 int SSL_renegotiate(SSL
*s
)
2024 if (SSL_IS_TLS13(s
)) {
2025 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2029 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2030 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2037 return (s
->method
->ssl_renegotiate(s
));
2040 int SSL_renegotiate_abbreviated(SSL
*s
)
2042 if (SSL_IS_TLS13(s
)) {
2043 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2047 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2048 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2055 return (s
->method
->ssl_renegotiate(s
));
2058 int SSL_renegotiate_pending(SSL
*s
)
2061 * becomes true when negotiation is requested; false again once a
2062 * handshake has finished
2064 return (s
->renegotiate
!= 0);
2067 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2072 case SSL_CTRL_GET_READ_AHEAD
:
2073 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
2074 case SSL_CTRL_SET_READ_AHEAD
:
2075 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2076 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2079 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2080 s
->msg_callback_arg
= parg
;
2084 return (s
->mode
|= larg
);
2085 case SSL_CTRL_CLEAR_MODE
:
2086 return (s
->mode
&= ~larg
);
2087 case SSL_CTRL_GET_MAX_CERT_LIST
:
2088 return (long)(s
->max_cert_list
);
2089 case SSL_CTRL_SET_MAX_CERT_LIST
:
2092 l
= (long)s
->max_cert_list
;
2093 s
->max_cert_list
= (size_t)larg
;
2095 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2096 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2098 s
->max_send_fragment
= larg
;
2099 if (s
->max_send_fragment
< s
->split_send_fragment
)
2100 s
->split_send_fragment
= s
->max_send_fragment
;
2102 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2103 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2105 s
->split_send_fragment
= larg
;
2107 case SSL_CTRL_SET_MAX_PIPELINES
:
2108 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2110 s
->max_pipelines
= larg
;
2112 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2114 case SSL_CTRL_GET_RI_SUPPORT
:
2116 return s
->s3
->send_connection_binding
;
2119 case SSL_CTRL_CERT_FLAGS
:
2120 return (s
->cert
->cert_flags
|= larg
);
2121 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2122 return (s
->cert
->cert_flags
&= ~larg
);
2124 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2126 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2128 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2129 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2131 return TLS_CIPHER_LEN
;
2133 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2134 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2136 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2140 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2141 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2142 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2143 &s
->min_proto_version
);
2144 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2145 return s
->min_proto_version
;
2146 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2147 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2148 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2149 &s
->max_proto_version
);
2150 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2151 return s
->max_proto_version
;
2153 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2157 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2160 case SSL_CTRL_SET_MSG_CALLBACK
:
2161 s
->msg_callback
= (void (*)
2162 (int write_p
, int version
, int content_type
,
2163 const void *buf
, size_t len
, SSL
*ssl
,
2168 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2172 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2174 return ctx
->sessions
;
2177 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2180 /* For some cases with ctx == NULL perform syntax checks */
2183 #ifndef OPENSSL_NO_EC
2184 case SSL_CTRL_SET_GROUPS_LIST
:
2185 return tls1_set_groups_list(NULL
, NULL
, parg
);
2187 case SSL_CTRL_SET_SIGALGS_LIST
:
2188 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2189 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2196 case SSL_CTRL_GET_READ_AHEAD
:
2197 return (ctx
->read_ahead
);
2198 case SSL_CTRL_SET_READ_AHEAD
:
2199 l
= ctx
->read_ahead
;
2200 ctx
->read_ahead
= larg
;
2203 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2204 ctx
->msg_callback_arg
= parg
;
2207 case SSL_CTRL_GET_MAX_CERT_LIST
:
2208 return (long)(ctx
->max_cert_list
);
2209 case SSL_CTRL_SET_MAX_CERT_LIST
:
2212 l
= (long)ctx
->max_cert_list
;
2213 ctx
->max_cert_list
= (size_t)larg
;
2216 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2219 l
= (long)ctx
->session_cache_size
;
2220 ctx
->session_cache_size
= (size_t)larg
;
2222 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2223 return (long)(ctx
->session_cache_size
);
2224 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2225 l
= ctx
->session_cache_mode
;
2226 ctx
->session_cache_mode
= larg
;
2228 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2229 return (ctx
->session_cache_mode
);
2231 case SSL_CTRL_SESS_NUMBER
:
2232 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2233 case SSL_CTRL_SESS_CONNECT
:
2234 return (ctx
->stats
.sess_connect
);
2235 case SSL_CTRL_SESS_CONNECT_GOOD
:
2236 return (ctx
->stats
.sess_connect_good
);
2237 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2238 return (ctx
->stats
.sess_connect_renegotiate
);
2239 case SSL_CTRL_SESS_ACCEPT
:
2240 return (ctx
->stats
.sess_accept
);
2241 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2242 return (ctx
->stats
.sess_accept_good
);
2243 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2244 return (ctx
->stats
.sess_accept_renegotiate
);
2245 case SSL_CTRL_SESS_HIT
:
2246 return (ctx
->stats
.sess_hit
);
2247 case SSL_CTRL_SESS_CB_HIT
:
2248 return (ctx
->stats
.sess_cb_hit
);
2249 case SSL_CTRL_SESS_MISSES
:
2250 return (ctx
->stats
.sess_miss
);
2251 case SSL_CTRL_SESS_TIMEOUTS
:
2252 return (ctx
->stats
.sess_timeout
);
2253 case SSL_CTRL_SESS_CACHE_FULL
:
2254 return (ctx
->stats
.sess_cache_full
);
2256 return (ctx
->mode
|= larg
);
2257 case SSL_CTRL_CLEAR_MODE
:
2258 return (ctx
->mode
&= ~larg
);
2259 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2260 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2262 ctx
->max_send_fragment
= larg
;
2263 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2264 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2266 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2267 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2269 ctx
->split_send_fragment
= larg
;
2271 case SSL_CTRL_SET_MAX_PIPELINES
:
2272 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2274 ctx
->max_pipelines
= larg
;
2276 case SSL_CTRL_CERT_FLAGS
:
2277 return (ctx
->cert
->cert_flags
|= larg
);
2278 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2279 return (ctx
->cert
->cert_flags
&= ~larg
);
2280 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2281 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2282 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2283 &ctx
->min_proto_version
);
2284 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2285 return ctx
->min_proto_version
;
2286 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2287 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2288 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2289 &ctx
->max_proto_version
);
2290 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2291 return ctx
->max_proto_version
;
2293 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2297 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2300 case SSL_CTRL_SET_MSG_CALLBACK
:
2301 ctx
->msg_callback
= (void (*)
2302 (int write_p
, int version
, int content_type
,
2303 const void *buf
, size_t len
, SSL
*ssl
,
2308 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2312 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2321 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2322 const SSL_CIPHER
*const *bp
)
2324 if ((*ap
)->id
> (*bp
)->id
)
2326 if ((*ap
)->id
< (*bp
)->id
)
2331 /** return a STACK of the ciphers available for the SSL and in order of
2333 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2336 if (s
->cipher_list
!= NULL
) {
2337 return (s
->cipher_list
);
2338 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2339 return (s
->ctx
->cipher_list
);
2345 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2347 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2349 return s
->session
->ciphers
;
2352 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2354 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2356 ciphers
= SSL_get_ciphers(s
);
2359 ssl_set_client_disabled(s
);
2360 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2361 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2362 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2364 sk
= sk_SSL_CIPHER_new_null();
2367 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2368 sk_SSL_CIPHER_free(sk
);
2376 /** return a STACK of the ciphers available for the SSL and in order of
2378 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2381 if (s
->cipher_list_by_id
!= NULL
) {
2382 return (s
->cipher_list_by_id
);
2383 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2384 return (s
->ctx
->cipher_list_by_id
);
2390 /** The old interface to get the same thing as SSL_get_ciphers() */
2391 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2393 const SSL_CIPHER
*c
;
2394 STACK_OF(SSL_CIPHER
) *sk
;
2398 sk
= SSL_get_ciphers(s
);
2399 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2401 c
= sk_SSL_CIPHER_value(sk
, n
);
2407 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2409 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2412 return ctx
->cipher_list
;
2416 /** specify the ciphers to be used by default by the SSL_CTX */
2417 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2419 STACK_OF(SSL_CIPHER
) *sk
;
2421 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2422 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2424 * ssl_create_cipher_list may return an empty stack if it was unable to
2425 * find a cipher matching the given rule string (for example if the rule
2426 * string specifies a cipher which has been disabled). This is not an
2427 * error as far as ssl_create_cipher_list is concerned, and hence
2428 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2432 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2433 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2439 /** specify the ciphers to be used by the SSL */
2440 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2442 STACK_OF(SSL_CIPHER
) *sk
;
2444 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2445 &s
->cipher_list_by_id
, str
, s
->cert
);
2446 /* see comment in SSL_CTX_set_cipher_list */
2449 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2450 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2456 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2459 STACK_OF(SSL_CIPHER
) *sk
;
2460 const SSL_CIPHER
*c
;
2463 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2467 sk
= s
->session
->ciphers
;
2469 if (sk_SSL_CIPHER_num(sk
) == 0)
2472 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2475 c
= sk_SSL_CIPHER_value(sk
, i
);
2476 n
= strlen(c
->name
);
2492 /** return a servername extension value if provided in Client Hello, or NULL.
2493 * So far, only host_name types are defined (RFC 3546).
2496 const char *SSL_get_servername(const SSL
*s
, const int type
)
2498 if (type
!= TLSEXT_NAMETYPE_host_name
)
2501 return s
->session
&& !s
->ext
.hostname
?
2502 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2505 int SSL_get_servername_type(const SSL
*s
)
2508 && (!s
->ext
.hostname
? s
->session
->
2509 ext
.hostname
: s
->ext
.hostname
))
2510 return TLSEXT_NAMETYPE_host_name
;
2515 * SSL_select_next_proto implements the standard protocol selection. It is
2516 * expected that this function is called from the callback set by
2517 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2518 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2519 * not included in the length. A byte string of length 0 is invalid. No byte
2520 * string may be truncated. The current, but experimental algorithm for
2521 * selecting the protocol is: 1) If the server doesn't support NPN then this
2522 * is indicated to the callback. In this case, the client application has to
2523 * abort the connection or have a default application level protocol. 2) If
2524 * the server supports NPN, but advertises an empty list then the client
2525 * selects the first protocol in its list, but indicates via the API that this
2526 * fallback case was enacted. 3) Otherwise, the client finds the first
2527 * protocol in the server's list that it supports and selects this protocol.
2528 * This is because it's assumed that the server has better information about
2529 * which protocol a client should use. 4) If the client doesn't support any
2530 * of the server's advertised protocols, then this is treated the same as
2531 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2532 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2534 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2535 const unsigned char *server
,
2536 unsigned int server_len
,
2537 const unsigned char *client
, unsigned int client_len
)
2540 const unsigned char *result
;
2541 int status
= OPENSSL_NPN_UNSUPPORTED
;
2544 * For each protocol in server preference order, see if we support it.
2546 for (i
= 0; i
< server_len
;) {
2547 for (j
= 0; j
< client_len
;) {
2548 if (server
[i
] == client
[j
] &&
2549 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2550 /* We found a match */
2551 result
= &server
[i
];
2552 status
= OPENSSL_NPN_NEGOTIATED
;
2562 /* There's no overlap between our protocols and the server's list. */
2564 status
= OPENSSL_NPN_NO_OVERLAP
;
2567 *out
= (unsigned char *)result
+ 1;
2568 *outlen
= result
[0];
2572 #ifndef OPENSSL_NO_NEXTPROTONEG
2574 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2575 * client's requested protocol for this connection and returns 0. If the
2576 * client didn't request any protocol, then *data is set to NULL. Note that
2577 * the client can request any protocol it chooses. The value returned from
2578 * this function need not be a member of the list of supported protocols
2579 * provided by the callback.
2581 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2588 *len
= (unsigned int)s
->ext
.npn_len
;
2593 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2594 * a TLS server needs a list of supported protocols for Next Protocol
2595 * Negotiation. The returned list must be in wire format. The list is
2596 * returned by setting |out| to point to it and |outlen| to its length. This
2597 * memory will not be modified, but one should assume that the SSL* keeps a
2598 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2599 * wishes to advertise. Otherwise, no such extension will be included in the
2602 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2603 SSL_CTX_npn_advertised_cb_func cb
,
2606 ctx
->ext
.npn_advertised_cb
= cb
;
2607 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2611 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2612 * client needs to select a protocol from the server's provided list. |out|
2613 * must be set to point to the selected protocol (which may be within |in|).
2614 * The length of the protocol name must be written into |outlen|. The
2615 * server's advertised protocols are provided in |in| and |inlen|. The
2616 * callback can assume that |in| is syntactically valid. The client must
2617 * select a protocol. It is fatal to the connection if this callback returns
2618 * a value other than SSL_TLSEXT_ERR_OK.
2620 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2621 SSL_CTX_npn_select_cb_func cb
,
2624 ctx
->ext
.npn_select_cb
= cb
;
2625 ctx
->ext
.npn_select_cb_arg
= arg
;
2630 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2631 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2632 * length-prefixed strings). Returns 0 on success.
2634 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2635 unsigned int protos_len
)
2637 OPENSSL_free(ctx
->ext
.alpn
);
2638 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2639 if (ctx
->ext
.alpn
== NULL
) {
2640 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2643 ctx
->ext
.alpn_len
= protos_len
;
2649 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2650 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2651 * length-prefixed strings). Returns 0 on success.
2653 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2654 unsigned int protos_len
)
2656 OPENSSL_free(ssl
->ext
.alpn
);
2657 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2658 if (ssl
->ext
.alpn
== NULL
) {
2659 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2662 ssl
->ext
.alpn_len
= protos_len
;
2668 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2669 * called during ClientHello processing in order to select an ALPN protocol
2670 * from the client's list of offered protocols.
2672 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2673 SSL_CTX_alpn_select_cb_func cb
,
2676 ctx
->ext
.alpn_select_cb
= cb
;
2677 ctx
->ext
.alpn_select_cb_arg
= arg
;
2681 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2682 * On return it sets |*data| to point to |*len| bytes of protocol name
2683 * (not including the leading length-prefix byte). If the server didn't
2684 * respond with a negotiated protocol then |*len| will be zero.
2686 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2691 *data
= ssl
->s3
->alpn_selected
;
2695 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2698 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2699 const char *label
, size_t llen
,
2700 const unsigned char *context
, size_t contextlen
,
2703 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2706 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2708 contextlen
, use_context
);
2711 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2713 const unsigned char *session_id
= a
->session_id
;
2715 unsigned char tmp_storage
[4];
2717 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2718 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2719 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2720 session_id
= tmp_storage
;
2724 ((unsigned long)session_id
[0]) |
2725 ((unsigned long)session_id
[1] << 8L) |
2726 ((unsigned long)session_id
[2] << 16L) |
2727 ((unsigned long)session_id
[3] << 24L);
2732 * NB: If this function (or indeed the hash function which uses a sort of
2733 * coarser function than this one) is changed, ensure
2734 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2735 * being able to construct an SSL_SESSION that will collide with any existing
2736 * session with a matching session ID.
2738 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2740 if (a
->ssl_version
!= b
->ssl_version
)
2742 if (a
->session_id_length
!= b
->session_id_length
)
2744 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2748 * These wrapper functions should remain rather than redeclaring
2749 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2750 * variable. The reason is that the functions aren't static, they're exposed
2754 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2756 SSL_CTX
*ret
= NULL
;
2759 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2763 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2766 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2767 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2770 ret
= OPENSSL_zalloc(sizeof(*ret
));
2775 ret
->min_proto_version
= 0;
2776 ret
->max_proto_version
= 0;
2777 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2778 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2779 /* We take the system default. */
2780 ret
->session_timeout
= meth
->get_timeout();
2781 ret
->references
= 1;
2782 ret
->lock
= CRYPTO_THREAD_lock_new();
2783 if (ret
->lock
== NULL
) {
2784 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2788 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2789 ret
->verify_mode
= SSL_VERIFY_NONE
;
2790 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2793 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2794 if (ret
->sessions
== NULL
)
2796 ret
->cert_store
= X509_STORE_new();
2797 if (ret
->cert_store
== NULL
)
2799 #ifndef OPENSSL_NO_CT
2800 ret
->ctlog_store
= CTLOG_STORE_new();
2801 if (ret
->ctlog_store
== NULL
)
2804 if (!ssl_create_cipher_list(ret
->method
,
2805 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2806 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2807 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2808 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2812 ret
->param
= X509_VERIFY_PARAM_new();
2813 if (ret
->param
== NULL
)
2816 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2817 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2820 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2821 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2825 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2828 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2831 /* No compression for DTLS */
2832 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2833 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2835 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2836 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2838 /* Setup RFC5077 ticket keys */
2839 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2840 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2841 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2842 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2843 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2844 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2845 ret
->options
|= SSL_OP_NO_TICKET
;
2847 #ifndef OPENSSL_NO_SRP
2848 if (!SSL_CTX_SRP_CTX_init(ret
))
2851 #ifndef OPENSSL_NO_ENGINE
2852 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2853 # define eng_strx(x) #x
2854 # define eng_str(x) eng_strx(x)
2855 /* Use specific client engine automatically... ignore errors */
2858 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2861 ENGINE_load_builtin_engines();
2862 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2864 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2870 * Default is to connect to non-RI servers. When RI is more widely
2871 * deployed might change this.
2873 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2875 * Disable compression by default to prevent CRIME. Applications can
2876 * re-enable compression by configuring
2877 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2878 * or by using the SSL_CONF library.
2880 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2882 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2885 * Default max early data is a fully loaded single record. Could be split
2886 * across multiple records in practice
2888 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2892 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2898 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2902 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2905 REF_PRINT_COUNT("SSL_CTX", ctx
);
2906 REF_ASSERT_ISNT(i
< 2);
2907 return ((i
> 1) ? 1 : 0);
2910 void SSL_CTX_free(SSL_CTX
*a
)
2917 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2918 REF_PRINT_COUNT("SSL_CTX", a
);
2921 REF_ASSERT_ISNT(i
< 0);
2923 X509_VERIFY_PARAM_free(a
->param
);
2924 dane_ctx_final(&a
->dane
);
2927 * Free internal session cache. However: the remove_cb() may reference
2928 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2929 * after the sessions were flushed.
2930 * As the ex_data handling routines might also touch the session cache,
2931 * the most secure solution seems to be: empty (flush) the cache, then
2932 * free ex_data, then finally free the cache.
2933 * (See ticket [openssl.org #212].)
2935 if (a
->sessions
!= NULL
)
2936 SSL_CTX_flush_sessions(a
, 0);
2938 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2939 lh_SSL_SESSION_free(a
->sessions
);
2940 X509_STORE_free(a
->cert_store
);
2941 #ifndef OPENSSL_NO_CT
2942 CTLOG_STORE_free(a
->ctlog_store
);
2944 sk_SSL_CIPHER_free(a
->cipher_list
);
2945 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2946 ssl_cert_free(a
->cert
);
2947 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2948 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2949 a
->comp_methods
= NULL
;
2950 #ifndef OPENSSL_NO_SRTP
2951 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2953 #ifndef OPENSSL_NO_SRP
2954 SSL_CTX_SRP_CTX_free(a
);
2956 #ifndef OPENSSL_NO_ENGINE
2957 ENGINE_finish(a
->client_cert_engine
);
2960 #ifndef OPENSSL_NO_EC
2961 OPENSSL_free(a
->ext
.ecpointformats
);
2962 OPENSSL_free(a
->ext
.supportedgroups
);
2964 OPENSSL_free(a
->ext
.alpn
);
2966 CRYPTO_THREAD_lock_free(a
->lock
);
2971 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2973 ctx
->default_passwd_callback
= cb
;
2976 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2978 ctx
->default_passwd_callback_userdata
= u
;
2981 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2983 return ctx
->default_passwd_callback
;
2986 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2988 return ctx
->default_passwd_callback_userdata
;
2991 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2993 s
->default_passwd_callback
= cb
;
2996 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2998 s
->default_passwd_callback_userdata
= u
;
3001 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3003 return s
->default_passwd_callback
;
3006 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3008 return s
->default_passwd_callback_userdata
;
3011 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3012 int (*cb
) (X509_STORE_CTX
*, void *),
3015 ctx
->app_verify_callback
= cb
;
3016 ctx
->app_verify_arg
= arg
;
3019 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3020 int (*cb
) (int, X509_STORE_CTX
*))
3022 ctx
->verify_mode
= mode
;
3023 ctx
->default_verify_callback
= cb
;
3026 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3028 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3031 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3033 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3036 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3038 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3041 void ssl_set_masks(SSL
*s
)
3044 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
3045 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3046 unsigned long mask_k
, mask_a
;
3047 #ifndef OPENSSL_NO_EC
3048 int have_ecc_cert
, ecdsa_ok
;
3053 #ifndef OPENSSL_NO_DH
3054 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3059 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3060 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3061 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3062 #ifndef OPENSSL_NO_EC
3063 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3069 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
3070 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3073 #ifndef OPENSSL_NO_GOST
3074 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3075 mask_k
|= SSL_kGOST
;
3076 mask_a
|= SSL_aGOST12
;
3078 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3079 mask_k
|= SSL_kGOST
;
3080 mask_a
|= SSL_aGOST12
;
3082 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3083 mask_k
|= SSL_kGOST
;
3084 mask_a
|= SSL_aGOST01
;
3095 * If we only have an RSA-PSS certificate allow RSA authentication
3096 * if TLS 1.2 and peer supports it.
3099 if (rsa_enc
|| rsa_sign
|| (ssl_has_cert(s
, SSL_PKEY_RSA_PSS_SIGN
)
3100 && pvalid
[SSL_PKEY_RSA_PSS_SIGN
] & CERT_PKEY_EXPLICIT_SIGN
3101 && TLS1_get_version(s
) == TLS1_2_VERSION
))
3108 mask_a
|= SSL_aNULL
;
3111 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3112 * depending on the key usage extension.
3114 #ifndef OPENSSL_NO_EC
3115 if (have_ecc_cert
) {
3117 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3118 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3119 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3122 mask_a
|= SSL_aECDSA
;
3124 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3125 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3126 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3127 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3128 mask_a
|= SSL_aECDSA
;
3131 #ifndef OPENSSL_NO_EC
3132 mask_k
|= SSL_kECDHE
;
3135 #ifndef OPENSSL_NO_PSK
3138 if (mask_k
& SSL_kRSA
)
3139 mask_k
|= SSL_kRSAPSK
;
3140 if (mask_k
& SSL_kDHE
)
3141 mask_k
|= SSL_kDHEPSK
;
3142 if (mask_k
& SSL_kECDHE
)
3143 mask_k
|= SSL_kECDHEPSK
;
3146 s
->s3
->tmp
.mask_k
= mask_k
;
3147 s
->s3
->tmp
.mask_a
= mask_a
;
3150 #ifndef OPENSSL_NO_EC
3152 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3154 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3155 /* key usage, if present, must allow signing */
3156 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3157 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3158 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3162 return 1; /* all checks are ok */
3167 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3168 size_t *serverinfo_length
)
3170 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3171 *serverinfo_length
= 0;
3173 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3176 *serverinfo
= cpk
->serverinfo
;
3177 *serverinfo_length
= cpk
->serverinfo_length
;
3181 void ssl_update_cache(SSL
*s
, int mode
)
3186 * If the session_id_length is 0, we are not supposed to cache it, and it
3187 * would be rather hard to do anyway :-)
3189 if (s
->session
->session_id_length
== 0)
3192 i
= s
->session_ctx
->session_cache_mode
;
3194 && (!s
->hit
|| SSL_IS_TLS13(s
))
3195 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) != 0
3196 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3197 && s
->session_ctx
->new_session_cb
!= NULL
) {
3198 SSL_SESSION_up_ref(s
->session
);
3199 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3200 SSL_SESSION_free(s
->session
);
3203 /* auto flush every 255 connections */
3204 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3205 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3206 ? s
->session_ctx
->stats
.sess_connect_good
3207 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3208 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3213 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3218 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3223 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3227 if (s
->method
!= meth
) {
3228 const SSL_METHOD
*sm
= s
->method
;
3229 int (*hf
) (SSL
*) = s
->handshake_func
;
3231 if (sm
->version
== meth
->version
)
3236 ret
= s
->method
->ssl_new(s
);
3239 if (hf
== sm
->ssl_connect
)
3240 s
->handshake_func
= meth
->ssl_connect
;
3241 else if (hf
== sm
->ssl_accept
)
3242 s
->handshake_func
= meth
->ssl_accept
;
3247 int SSL_get_error(const SSL
*s
, int i
)
3254 return (SSL_ERROR_NONE
);
3257 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3258 * where we do encode the error
3260 if ((l
= ERR_peek_error()) != 0) {
3261 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3262 return (SSL_ERROR_SYSCALL
);
3264 return (SSL_ERROR_SSL
);
3267 if (SSL_want_read(s
)) {
3268 bio
= SSL_get_rbio(s
);
3269 if (BIO_should_read(bio
))
3270 return (SSL_ERROR_WANT_READ
);
3271 else if (BIO_should_write(bio
))
3273 * This one doesn't make too much sense ... We never try to write
3274 * to the rbio, and an application program where rbio and wbio
3275 * are separate couldn't even know what it should wait for.
3276 * However if we ever set s->rwstate incorrectly (so that we have
3277 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3278 * wbio *are* the same, this test works around that bug; so it
3279 * might be safer to keep it.
3281 return (SSL_ERROR_WANT_WRITE
);
3282 else if (BIO_should_io_special(bio
)) {
3283 reason
= BIO_get_retry_reason(bio
);
3284 if (reason
== BIO_RR_CONNECT
)
3285 return (SSL_ERROR_WANT_CONNECT
);
3286 else if (reason
== BIO_RR_ACCEPT
)
3287 return (SSL_ERROR_WANT_ACCEPT
);
3289 return (SSL_ERROR_SYSCALL
); /* unknown */
3293 if (SSL_want_write(s
)) {
3294 /* Access wbio directly - in order to use the buffered bio if present */
3296 if (BIO_should_write(bio
))
3297 return (SSL_ERROR_WANT_WRITE
);
3298 else if (BIO_should_read(bio
))
3300 * See above (SSL_want_read(s) with BIO_should_write(bio))
3302 return (SSL_ERROR_WANT_READ
);
3303 else if (BIO_should_io_special(bio
)) {
3304 reason
= BIO_get_retry_reason(bio
);
3305 if (reason
== BIO_RR_CONNECT
)
3306 return (SSL_ERROR_WANT_CONNECT
);
3307 else if (reason
== BIO_RR_ACCEPT
)
3308 return (SSL_ERROR_WANT_ACCEPT
);
3310 return (SSL_ERROR_SYSCALL
);
3313 if (SSL_want_x509_lookup(s
))
3314 return (SSL_ERROR_WANT_X509_LOOKUP
);
3315 if (SSL_want_async(s
))
3316 return SSL_ERROR_WANT_ASYNC
;
3317 if (SSL_want_async_job(s
))
3318 return SSL_ERROR_WANT_ASYNC_JOB
;
3319 if (SSL_want_client_hello_cb(s
))
3320 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3322 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3323 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3324 return (SSL_ERROR_ZERO_RETURN
);
3326 return (SSL_ERROR_SYSCALL
);
3329 static int ssl_do_handshake_intern(void *vargs
)
3331 struct ssl_async_args
*args
;
3334 args
= (struct ssl_async_args
*)vargs
;
3337 return s
->handshake_func(s
);
3340 int SSL_do_handshake(SSL
*s
)
3344 if (s
->handshake_func
== NULL
) {
3345 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3349 ossl_statem_check_finish_init(s
, -1);
3351 s
->method
->ssl_renegotiate_check(s
, 0);
3353 if (SSL_is_server(s
)) {
3354 /* clear SNI settings at server-side */
3355 OPENSSL_free(s
->ext
.hostname
);
3356 s
->ext
.hostname
= NULL
;
3359 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3360 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3361 struct ssl_async_args args
;
3365 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3367 ret
= s
->handshake_func(s
);
3373 void SSL_set_accept_state(SSL
*s
)
3377 ossl_statem_clear(s
);
3378 s
->handshake_func
= s
->method
->ssl_accept
;
3382 void SSL_set_connect_state(SSL
*s
)
3386 ossl_statem_clear(s
);
3387 s
->handshake_func
= s
->method
->ssl_connect
;
3391 int ssl_undefined_function(SSL
*s
)
3393 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3397 int ssl_undefined_void_function(void)
3399 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3400 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3404 int ssl_undefined_const_function(const SSL
*s
)
3409 const SSL_METHOD
*ssl_bad_method(int ver
)
3411 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3415 const char *ssl_protocol_to_string(int version
)
3419 case TLS1_3_VERSION
:
3422 case TLS1_2_VERSION
:
3425 case TLS1_1_VERSION
:
3440 case DTLS1_2_VERSION
:
3448 const char *SSL_get_version(const SSL
*s
)
3450 return ssl_protocol_to_string(s
->version
);
3453 SSL
*SSL_dup(SSL
*s
)
3455 STACK_OF(X509_NAME
) *sk
;
3460 /* If we're not quiescent, just up_ref! */
3461 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3462 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3467 * Otherwise, copy configuration state, and session if set.
3469 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3472 if (s
->session
!= NULL
) {
3474 * Arranges to share the same session via up_ref. This "copies"
3475 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3477 if (!SSL_copy_session_id(ret
, s
))
3481 * No session has been established yet, so we have to expect that
3482 * s->cert or ret->cert will be changed later -- they should not both
3483 * point to the same object, and thus we can't use
3484 * SSL_copy_session_id.
3486 if (!SSL_set_ssl_method(ret
, s
->method
))
3489 if (s
->cert
!= NULL
) {
3490 ssl_cert_free(ret
->cert
);
3491 ret
->cert
= ssl_cert_dup(s
->cert
);
3492 if (ret
->cert
== NULL
)
3496 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3497 (int)s
->sid_ctx_length
))
3501 if (!ssl_dane_dup(ret
, s
))
3503 ret
->version
= s
->version
;
3504 ret
->options
= s
->options
;
3505 ret
->mode
= s
->mode
;
3506 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3507 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3508 ret
->msg_callback
= s
->msg_callback
;
3509 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3510 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3511 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3512 ret
->generate_session_id
= s
->generate_session_id
;
3514 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3516 /* copy app data, a little dangerous perhaps */
3517 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3520 /* setup rbio, and wbio */
3521 if (s
->rbio
!= NULL
) {
3522 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3525 if (s
->wbio
!= NULL
) {
3526 if (s
->wbio
!= s
->rbio
) {
3527 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3530 BIO_up_ref(ret
->rbio
);
3531 ret
->wbio
= ret
->rbio
;
3535 ret
->server
= s
->server
;
3536 if (s
->handshake_func
) {
3538 SSL_set_accept_state(ret
);
3540 SSL_set_connect_state(ret
);
3542 ret
->shutdown
= s
->shutdown
;
3545 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3546 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3548 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3550 /* dup the cipher_list and cipher_list_by_id stacks */
3551 if (s
->cipher_list
!= NULL
) {
3552 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3555 if (s
->cipher_list_by_id
!= NULL
)
3556 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3560 /* Dup the client_CA list */
3561 if (s
->ca_names
!= NULL
) {
3562 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3565 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3566 xn
= sk_X509_NAME_value(sk
, i
);
3567 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3580 void ssl_clear_cipher_ctx(SSL
*s
)
3582 if (s
->enc_read_ctx
!= NULL
) {
3583 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3584 s
->enc_read_ctx
= NULL
;
3586 if (s
->enc_write_ctx
!= NULL
) {
3587 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3588 s
->enc_write_ctx
= NULL
;
3590 #ifndef OPENSSL_NO_COMP
3591 COMP_CTX_free(s
->expand
);
3593 COMP_CTX_free(s
->compress
);
3598 X509
*SSL_get_certificate(const SSL
*s
)
3600 if (s
->cert
!= NULL
)
3601 return (s
->cert
->key
->x509
);
3606 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3608 if (s
->cert
!= NULL
)
3609 return (s
->cert
->key
->privatekey
);
3614 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3616 if (ctx
->cert
!= NULL
)
3617 return ctx
->cert
->key
->x509
;
3622 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3624 if (ctx
->cert
!= NULL
)
3625 return ctx
->cert
->key
->privatekey
;
3630 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3632 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3633 return (s
->session
->cipher
);
3637 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
3639 return s
->s3
->tmp
.new_cipher
;
3642 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3644 #ifndef OPENSSL_NO_COMP
3645 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3651 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3653 #ifndef OPENSSL_NO_COMP
3654 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3660 int ssl_init_wbio_buffer(SSL
*s
)
3664 if (s
->bbio
!= NULL
) {
3665 /* Already buffered. */
3669 bbio
= BIO_new(BIO_f_buffer());
3670 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3672 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3676 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3681 int ssl_free_wbio_buffer(SSL
*s
)
3683 /* callers ensure s is never null */
3684 if (s
->bbio
== NULL
)
3687 s
->wbio
= BIO_pop(s
->wbio
);
3688 if (!ossl_assert(s
->wbio
!= NULL
))
3696 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3698 ctx
->quiet_shutdown
= mode
;
3701 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3703 return (ctx
->quiet_shutdown
);
3706 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3708 s
->quiet_shutdown
= mode
;
3711 int SSL_get_quiet_shutdown(const SSL
*s
)
3713 return (s
->quiet_shutdown
);
3716 void SSL_set_shutdown(SSL
*s
, int mode
)
3721 int SSL_get_shutdown(const SSL
*s
)
3726 int SSL_version(const SSL
*s
)
3731 int SSL_client_version(const SSL
*s
)
3733 return s
->client_version
;
3736 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3741 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3744 if (ssl
->ctx
== ctx
)
3747 ctx
= ssl
->session_ctx
;
3748 new_cert
= ssl_cert_dup(ctx
->cert
);
3749 if (new_cert
== NULL
) {
3753 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3754 ssl_cert_free(new_cert
);
3758 ssl_cert_free(ssl
->cert
);
3759 ssl
->cert
= new_cert
;
3762 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3763 * so setter APIs must prevent invalid lengths from entering the system.
3765 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3769 * If the session ID context matches that of the parent SSL_CTX,
3770 * inherit it from the new SSL_CTX as well. If however the context does
3771 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3772 * leave it unchanged.
3774 if ((ssl
->ctx
!= NULL
) &&
3775 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3776 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3777 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3778 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3781 SSL_CTX_up_ref(ctx
);
3782 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3788 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3790 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3793 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3795 X509_LOOKUP
*lookup
;
3797 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3800 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3802 /* Clear any errors if the default directory does not exist */
3808 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3810 X509_LOOKUP
*lookup
;
3812 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3816 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3818 /* Clear any errors if the default file does not exist */
3824 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3827 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3830 void SSL_set_info_callback(SSL
*ssl
,
3831 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3833 ssl
->info_callback
= cb
;
3837 * One compiler (Diab DCC) doesn't like argument names in returned function
3840 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3843 return ssl
->info_callback
;
3846 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3848 ssl
->verify_result
= arg
;
3851 long SSL_get_verify_result(const SSL
*ssl
)
3853 return (ssl
->verify_result
);
3856 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3859 return sizeof(ssl
->s3
->client_random
);
3860 if (outlen
> sizeof(ssl
->s3
->client_random
))
3861 outlen
= sizeof(ssl
->s3
->client_random
);
3862 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3866 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3869 return sizeof(ssl
->s3
->server_random
);
3870 if (outlen
> sizeof(ssl
->s3
->server_random
))
3871 outlen
= sizeof(ssl
->s3
->server_random
);
3872 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3876 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3877 unsigned char *out
, size_t outlen
)
3880 return session
->master_key_length
;
3881 if (outlen
> session
->master_key_length
)
3882 outlen
= session
->master_key_length
;
3883 memcpy(out
, session
->master_key
, outlen
);
3887 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
3890 if (len
> sizeof(sess
->master_key
))
3893 memcpy(sess
->master_key
, in
, len
);
3894 sess
->master_key_length
= len
;
3899 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3901 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3904 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3906 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3909 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3911 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3914 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3916 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3919 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3921 return (ctx
->cert_store
);
3924 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3926 X509_STORE_free(ctx
->cert_store
);
3927 ctx
->cert_store
= store
;
3930 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3933 X509_STORE_up_ref(store
);
3934 SSL_CTX_set_cert_store(ctx
, store
);
3937 int SSL_want(const SSL
*s
)
3939 return (s
->rwstate
);
3943 * \brief Set the callback for generating temporary DH keys.
3944 * \param ctx the SSL context.
3945 * \param dh the callback
3948 #ifndef OPENSSL_NO_DH
3949 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3950 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3953 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3956 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3959 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3963 #ifndef OPENSSL_NO_PSK
3964 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3966 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3967 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3970 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3971 if (identity_hint
!= NULL
) {
3972 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3973 if (ctx
->cert
->psk_identity_hint
== NULL
)
3976 ctx
->cert
->psk_identity_hint
= NULL
;
3980 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3985 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3986 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3989 OPENSSL_free(s
->cert
->psk_identity_hint
);
3990 if (identity_hint
!= NULL
) {
3991 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3992 if (s
->cert
->psk_identity_hint
== NULL
)
3995 s
->cert
->psk_identity_hint
= NULL
;
3999 const char *SSL_get_psk_identity_hint(const SSL
*s
)
4001 if (s
== NULL
|| s
->session
== NULL
)
4003 return (s
->session
->psk_identity_hint
);
4006 const char *SSL_get_psk_identity(const SSL
*s
)
4008 if (s
== NULL
|| s
->session
== NULL
)
4010 return (s
->session
->psk_identity
);
4013 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4015 s
->psk_client_callback
= cb
;
4018 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4020 ctx
->psk_client_callback
= cb
;
4023 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4025 s
->psk_server_callback
= cb
;
4028 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4030 ctx
->psk_server_callback
= cb
;
4034 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4036 s
->psk_find_session_cb
= cb
;
4039 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4040 SSL_psk_find_session_cb_func cb
)
4042 ctx
->psk_find_session_cb
= cb
;
4045 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4047 s
->psk_use_session_cb
= cb
;
4050 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4051 SSL_psk_use_session_cb_func cb
)
4053 ctx
->psk_use_session_cb
= cb
;
4056 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4057 void (*cb
) (int write_p
, int version
,
4058 int content_type
, const void *buf
,
4059 size_t len
, SSL
*ssl
, void *arg
))
4061 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4064 void SSL_set_msg_callback(SSL
*ssl
,
4065 void (*cb
) (int write_p
, int version
,
4066 int content_type
, const void *buf
,
4067 size_t len
, SSL
*ssl
, void *arg
))
4069 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4072 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4073 int (*cb
) (SSL
*ssl
,
4077 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4078 (void (*)(void))cb
);
4081 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4082 int (*cb
) (SSL
*ssl
,
4083 int is_forward_secure
))
4085 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4086 (void (*)(void))cb
);
4089 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4090 size_t (*cb
) (SSL
*ssl
, int type
,
4091 size_t len
, void *arg
))
4093 ctx
->record_padding_cb
= cb
;
4096 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4098 ctx
->record_padding_arg
= arg
;
4101 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
4103 return ctx
->record_padding_arg
;
4106 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4108 /* block size of 0 or 1 is basically no padding */
4109 if (block_size
== 1)
4110 ctx
->block_padding
= 0;
4111 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4112 ctx
->block_padding
= block_size
;
4118 void SSL_set_record_padding_callback(SSL
*ssl
,
4119 size_t (*cb
) (SSL
*ssl
, int type
,
4120 size_t len
, void *arg
))
4122 ssl
->record_padding_cb
= cb
;
4125 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4127 ssl
->record_padding_arg
= arg
;
4130 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
4132 return ssl
->record_padding_arg
;
4135 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4137 /* block size of 0 or 1 is basically no padding */
4138 if (block_size
== 1)
4139 ssl
->block_padding
= 0;
4140 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4141 ssl
->block_padding
= block_size
;
4148 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4149 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4150 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4151 * Returns the newly allocated ctx;
4154 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4156 ssl_clear_hash_ctx(hash
);
4157 *hash
= EVP_MD_CTX_new();
4158 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4159 EVP_MD_CTX_free(*hash
);
4166 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4169 EVP_MD_CTX_free(*hash
);
4173 /* Retrieve handshake hashes */
4174 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4177 EVP_MD_CTX
*ctx
= NULL
;
4178 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
4179 int hashleni
= EVP_MD_CTX_size(hdgst
);
4182 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
4185 ctx
= EVP_MD_CTX_new();
4189 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4190 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
4193 *hashlen
= hashleni
;
4197 EVP_MD_CTX_free(ctx
);
4201 int SSL_session_reused(SSL
*s
)
4206 int SSL_is_server(const SSL
*s
)
4211 #if OPENSSL_API_COMPAT < 0x10100000L
4212 void SSL_set_debug(SSL
*s
, int debug
)
4214 /* Old function was do-nothing anyway... */
4220 void SSL_set_security_level(SSL
*s
, int level
)
4222 s
->cert
->sec_level
= level
;
4225 int SSL_get_security_level(const SSL
*s
)
4227 return s
->cert
->sec_level
;
4230 void SSL_set_security_callback(SSL
*s
,
4231 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4232 int op
, int bits
, int nid
,
4233 void *other
, void *ex
))
4235 s
->cert
->sec_cb
= cb
;
4238 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4239 const SSL_CTX
*ctx
, int op
,
4240 int bits
, int nid
, void *other
,
4242 return s
->cert
->sec_cb
;
4245 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4247 s
->cert
->sec_ex
= ex
;
4250 void *SSL_get0_security_ex_data(const SSL
*s
)
4252 return s
->cert
->sec_ex
;
4255 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4257 ctx
->cert
->sec_level
= level
;
4260 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4262 return ctx
->cert
->sec_level
;
4265 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4266 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4267 int op
, int bits
, int nid
,
4268 void *other
, void *ex
))
4270 ctx
->cert
->sec_cb
= cb
;
4273 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4279 return ctx
->cert
->sec_cb
;
4282 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4284 ctx
->cert
->sec_ex
= ex
;
4287 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4289 return ctx
->cert
->sec_ex
;
4293 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4294 * can return unsigned long, instead of the generic long return value from the
4295 * control interface.
4297 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4299 return ctx
->options
;
4302 unsigned long SSL_get_options(const SSL
*s
)
4307 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4309 return ctx
->options
|= op
;
4312 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4314 return s
->options
|= op
;
4317 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4319 return ctx
->options
&= ~op
;
4322 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4324 return s
->options
&= ~op
;
4327 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4329 return s
->verified_chain
;
4332 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4334 #ifndef OPENSSL_NO_CT
4337 * Moves SCTs from the |src| stack to the |dst| stack.
4338 * The source of each SCT will be set to |origin|.
4339 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4341 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4343 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4344 sct_source_t origin
)
4350 *dst
= sk_SCT_new_null();
4352 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4357 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4358 if (SCT_set_source(sct
, origin
) != 1)
4361 if (sk_SCT_push(*dst
, sct
) <= 0)
4369 sk_SCT_push(src
, sct
); /* Put the SCT back */
4374 * Look for data collected during ServerHello and parse if found.
4375 * Returns the number of SCTs extracted.
4377 static int ct_extract_tls_extension_scts(SSL
*s
)
4379 int scts_extracted
= 0;
4381 if (s
->ext
.scts
!= NULL
) {
4382 const unsigned char *p
= s
->ext
.scts
;
4383 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4385 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4387 SCT_LIST_free(scts
);
4390 return scts_extracted
;
4394 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4395 * contains an SCT X509 extension. They will be stored in |s->scts|.
4397 * - The number of SCTs extracted, assuming an OCSP response exists.
4398 * - 0 if no OCSP response exists or it contains no SCTs.
4399 * - A negative integer if an error occurs.
4401 static int ct_extract_ocsp_response_scts(SSL
*s
)
4403 # ifndef OPENSSL_NO_OCSP
4404 int scts_extracted
= 0;
4405 const unsigned char *p
;
4406 OCSP_BASICRESP
*br
= NULL
;
4407 OCSP_RESPONSE
*rsp
= NULL
;
4408 STACK_OF(SCT
) *scts
= NULL
;
4411 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4414 p
= s
->ext
.ocsp
.resp
;
4415 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4419 br
= OCSP_response_get1_basic(rsp
);
4423 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4424 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4430 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4432 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4433 if (scts_extracted
< 0)
4437 SCT_LIST_free(scts
);
4438 OCSP_BASICRESP_free(br
);
4439 OCSP_RESPONSE_free(rsp
);
4440 return scts_extracted
;
4442 /* Behave as if no OCSP response exists */
4448 * Attempts to extract SCTs from the peer certificate.
4449 * Return the number of SCTs extracted, or a negative integer if an error
4452 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4454 int scts_extracted
= 0;
4455 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4458 STACK_OF(SCT
) *scts
=
4459 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4462 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4464 SCT_LIST_free(scts
);
4467 return scts_extracted
;
4471 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4472 * response (if it exists) and X509v3 extensions in the certificate.
4473 * Returns NULL if an error occurs.
4475 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4477 if (!s
->scts_parsed
) {
4478 if (ct_extract_tls_extension_scts(s
) < 0 ||
4479 ct_extract_ocsp_response_scts(s
) < 0 ||
4480 ct_extract_x509v3_extension_scts(s
) < 0)
4490 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4491 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4496 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4497 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4499 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4502 for (i
= 0; i
< count
; ++i
) {
4503 SCT
*sct
= sk_SCT_value(scts
, i
);
4504 int status
= SCT_get_validation_status(sct
);
4506 if (status
== SCT_VALIDATION_STATUS_VALID
)
4509 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4513 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4517 * Since code exists that uses the custom extension handler for CT, look
4518 * for this and throw an error if they have already registered to use CT.
4520 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4521 TLSEXT_TYPE_signed_certificate_timestamp
))
4523 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4524 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4528 if (callback
!= NULL
) {
4530 * If we are validating CT, then we MUST accept SCTs served via OCSP
4532 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4536 s
->ct_validation_callback
= callback
;
4537 s
->ct_validation_callback_arg
= arg
;
4542 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4543 ssl_ct_validation_cb callback
, void *arg
)
4546 * Since code exists that uses the custom extension handler for CT, look for
4547 * this and throw an error if they have already registered to use CT.
4549 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4550 TLSEXT_TYPE_signed_certificate_timestamp
))
4552 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4553 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4557 ctx
->ct_validation_callback
= callback
;
4558 ctx
->ct_validation_callback_arg
= arg
;
4562 int SSL_ct_is_enabled(const SSL
*s
)
4564 return s
->ct_validation_callback
!= NULL
;
4567 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4569 return ctx
->ct_validation_callback
!= NULL
;
4572 int ssl_validate_ct(SSL
*s
)
4575 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4577 SSL_DANE
*dane
= &s
->dane
;
4578 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4579 const STACK_OF(SCT
) *scts
;
4582 * If no callback is set, the peer is anonymous, or its chain is invalid,
4583 * skip SCT validation - just return success. Applications that continue
4584 * handshakes without certificates, with unverified chains, or pinned leaf
4585 * certificates are outside the scope of the WebPKI and CT.
4587 * The above exclusions notwithstanding the vast majority of peers will
4588 * have rather ordinary certificate chains validated by typical
4589 * applications that perform certificate verification and therefore will
4590 * process SCTs when enabled.
4592 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4593 s
->verify_result
!= X509_V_OK
||
4594 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4598 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4599 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4601 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4602 switch (dane
->mtlsa
->usage
) {
4603 case DANETLS_USAGE_DANE_TA
:
4604 case DANETLS_USAGE_DANE_EE
:
4609 ctx
= CT_POLICY_EVAL_CTX_new();
4611 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4615 issuer
= sk_X509_value(s
->verified_chain
, 1);
4616 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4617 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4618 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4619 CT_POLICY_EVAL_CTX_set_time(
4620 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4622 scts
= SSL_get0_peer_scts(s
);
4625 * This function returns success (> 0) only when all the SCTs are valid, 0
4626 * when some are invalid, and < 0 on various internal errors (out of
4627 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4628 * reason to abort the handshake, that decision is up to the callback.
4629 * Therefore, we error out only in the unexpected case that the return
4630 * value is negative.
4632 * XXX: One might well argue that the return value of this function is an
4633 * unfortunate design choice. Its job is only to determine the validation
4634 * status of each of the provided SCTs. So long as it correctly separates
4635 * the wheat from the chaff it should return success. Failure in this case
4636 * ought to correspond to an inability to carry out its duties.
4638 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4639 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4643 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4645 ret
= 0; /* This function returns 0 on failure */
4648 CT_POLICY_EVAL_CTX_free(ctx
);
4650 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4651 * failure return code here. Also the application may wish the complete
4652 * the handshake, and then disconnect cleanly at a higher layer, after
4653 * checking the verification status of the completed connection.
4655 * We therefore force a certificate verification failure which will be
4656 * visible via SSL_get_verify_result() and cached as part of any resumed
4659 * Note: the permissive callback is for information gathering only, always
4660 * returns success, and does not affect verification status. Only the
4661 * strict callback or a custom application-specified callback can trigger
4662 * connection failure or record a verification error.
4665 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4669 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4671 switch (validation_mode
) {
4673 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4675 case SSL_CT_VALIDATION_PERMISSIVE
:
4676 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4677 case SSL_CT_VALIDATION_STRICT
:
4678 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4682 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4684 switch (validation_mode
) {
4686 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4688 case SSL_CT_VALIDATION_PERMISSIVE
:
4689 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4690 case SSL_CT_VALIDATION_STRICT
:
4691 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4695 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4697 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4700 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4702 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4705 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4707 CTLOG_STORE_free(ctx
->ctlog_store
);
4708 ctx
->ctlog_store
= logs
;
4711 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4713 return ctx
->ctlog_store
;
4716 #endif /* OPENSSL_NO_CT */
4718 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
4721 c
->client_hello_cb
= cb
;
4722 c
->client_hello_cb_arg
= arg
;
4725 int SSL_client_hello_isv2(SSL
*s
)
4727 if (s
->clienthello
== NULL
)
4729 return s
->clienthello
->isv2
;
4732 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
4734 if (s
->clienthello
== NULL
)
4736 return s
->clienthello
->legacy_version
;
4739 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
4741 if (s
->clienthello
== NULL
)
4744 *out
= s
->clienthello
->random
;
4745 return SSL3_RANDOM_SIZE
;
4748 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
4750 if (s
->clienthello
== NULL
)
4753 *out
= s
->clienthello
->session_id
;
4754 return s
->clienthello
->session_id_len
;
4757 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
4759 if (s
->clienthello
== NULL
)
4762 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4763 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4766 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4768 if (s
->clienthello
== NULL
)
4771 *out
= s
->clienthello
->compressions
;
4772 return s
->clienthello
->compressions_len
;
4775 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4781 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4783 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4784 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4788 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4789 if (present
== NULL
)
4791 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4792 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4794 if (ext
->received_order
>= num
)
4796 present
[ext
->received_order
] = ext
->type
;
4803 OPENSSL_free(present
);
4807 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4813 if (s
->clienthello
== NULL
)
4815 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4816 r
= s
->clienthello
->pre_proc_exts
+ i
;
4817 if (r
->present
&& r
->type
== type
) {
4819 *out
= PACKET_data(&r
->data
);
4821 *outlen
= PACKET_remaining(&r
->data
);
4828 int SSL_free_buffers(SSL
*ssl
)
4830 RECORD_LAYER
*rl
= &ssl
->rlayer
;
4832 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
4835 RECORD_LAYER_release(rl
);
4839 int SSL_alloc_buffers(SSL
*ssl
)
4841 return ssl3_setup_buffers(ssl
);
4844 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4846 ctx
->keylog_callback
= cb
;
4849 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4851 return ctx
->keylog_callback
;
4854 static int nss_keylog_int(const char *prefix
,
4856 const uint8_t *parameter_1
,
4857 size_t parameter_1_len
,
4858 const uint8_t *parameter_2
,
4859 size_t parameter_2_len
)
4862 char *cursor
= NULL
;
4867 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4870 * Our output buffer will contain the following strings, rendered with
4871 * space characters in between, terminated by a NULL character: first the
4872 * prefix, then the first parameter, then the second parameter. The
4873 * meaning of each parameter depends on the specific key material being
4874 * logged. Note that the first and second parameters are encoded in
4875 * hexadecimal, so we need a buffer that is twice their lengths.
4877 prefix_len
= strlen(prefix
);
4878 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4879 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4880 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4884 strcpy(cursor
, prefix
);
4885 cursor
+= prefix_len
;
4888 for (i
= 0; i
< parameter_1_len
; i
++) {
4889 sprintf(cursor
, "%02x", parameter_1
[i
]);
4894 for (i
= 0; i
< parameter_2_len
; i
++) {
4895 sprintf(cursor
, "%02x", parameter_2
[i
]);
4900 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4906 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4907 const uint8_t *encrypted_premaster
,
4908 size_t encrypted_premaster_len
,
4909 const uint8_t *premaster
,
4910 size_t premaster_len
)
4912 if (encrypted_premaster_len
< 8) {
4913 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4917 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4918 return nss_keylog_int("RSA",
4920 encrypted_premaster
,
4926 int ssl_log_secret(SSL
*ssl
,
4928 const uint8_t *secret
,
4931 return nss_keylog_int(label
,
4933 ssl
->s3
->client_random
,
4939 #define SSLV2_CIPHER_LEN 3
4941 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4946 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4948 if (PACKET_remaining(cipher_suites
) == 0) {
4949 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4950 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4954 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4955 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4956 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4957 *al
= SSL_AD_DECODE_ERROR
;
4961 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4962 s
->s3
->tmp
.ciphers_raw
= NULL
;
4963 s
->s3
->tmp
.ciphers_rawlen
= 0;
4966 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4967 PACKET sslv2ciphers
= *cipher_suites
;
4968 unsigned int leadbyte
;
4972 * We store the raw ciphers list in SSLv3+ format so we need to do some
4973 * preprocessing to convert the list first. If there are any SSLv2 only
4974 * ciphersuites with a non-zero leading byte then we are going to
4975 * slightly over allocate because we won't store those. But that isn't a
4978 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4979 s
->s3
->tmp
.ciphers_raw
= raw
;
4981 *al
= SSL_AD_INTERNAL_ERROR
;
4984 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4985 PACKET_remaining(&sslv2ciphers
) > 0;
4986 raw
+= TLS_CIPHER_LEN
) {
4987 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4989 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4992 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4993 *al
= SSL_AD_DECODE_ERROR
;
4994 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4995 s
->s3
->tmp
.ciphers_raw
= NULL
;
4996 s
->s3
->tmp
.ciphers_rawlen
= 0;
5000 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
5002 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
5003 &s
->s3
->tmp
.ciphers_rawlen
)) {
5004 *al
= SSL_AD_INTERNAL_ERROR
;
5012 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5013 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5014 STACK_OF(SSL_CIPHER
) **scsvs
)
5019 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5021 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
5024 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5025 STACK_OF(SSL_CIPHER
) **skp
,
5026 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5027 int sslv2format
, int *al
)
5029 const SSL_CIPHER
*c
;
5030 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5031 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5033 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5034 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5036 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5038 if (PACKET_remaining(cipher_suites
) == 0) {
5039 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5040 *al
= SSL_AD_ILLEGAL_PARAMETER
;
5044 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5045 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5046 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5047 *al
= SSL_AD_DECODE_ERROR
;
5051 sk
= sk_SSL_CIPHER_new_null();
5052 scsvs
= sk_SSL_CIPHER_new_null();
5053 if (sk
== NULL
|| scsvs
== NULL
) {
5054 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5055 *al
= SSL_AD_INTERNAL_ERROR
;
5059 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5061 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5062 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5063 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5065 if (sslv2format
&& cipher
[0] != '\0')
5068 /* For SSLv2-compat, ignore leading 0-byte. */
5069 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5071 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5072 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5073 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5074 *al
= SSL_AD_INTERNAL_ERROR
;
5079 if (PACKET_remaining(cipher_suites
) > 0) {
5080 *al
= SSL_AD_DECODE_ERROR
;
5081 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5088 sk_SSL_CIPHER_free(sk
);
5089 if (scsvs_out
!= NULL
)
5092 sk_SSL_CIPHER_free(scsvs
);
5095 sk_SSL_CIPHER_free(sk
);
5096 sk_SSL_CIPHER_free(scsvs
);
5100 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5102 ctx
->max_early_data
= max_early_data
;
5107 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5109 return ctx
->max_early_data
;
5112 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5114 s
->max_early_data
= max_early_data
;
5119 uint32_t SSL_get_max_early_data(const SSL
*s
)
5121 return s
->max_early_data
;
5124 int ssl_randbytes(SSL
*s
, unsigned char *rnd
, size_t size
)
5126 if (s
->drbg
!= NULL
)
5127 return RAND_DRBG_generate(s
->drbg
, rnd
, size
, 0, NULL
, 0);
5128 return RAND_bytes(rnd
, (int)size
);