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 if (!s
->ext
.supportedgroups
)
725 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
728 #ifndef OPENSSL_NO_NEXTPROTONEG
732 if (s
->ctx
->ext
.alpn
) {
733 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
734 if (s
->ext
.alpn
== NULL
)
736 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
737 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
740 s
->verified_chain
= NULL
;
741 s
->verify_result
= X509_V_OK
;
743 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
744 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
746 s
->method
= ctx
->method
;
748 s
->key_update
= SSL_KEY_UPDATE_NONE
;
750 if (!s
->method
->ssl_new(s
))
753 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
758 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
761 #ifndef OPENSSL_NO_PSK
762 s
->psk_client_callback
= ctx
->psk_client_callback
;
763 s
->psk_server_callback
= ctx
->psk_server_callback
;
765 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
766 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
770 #ifndef OPENSSL_NO_CT
771 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
772 ctx
->ct_validation_callback_arg
))
779 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
783 int SSL_is_dtls(const SSL
*s
)
785 return SSL_IS_DTLS(s
) ? 1 : 0;
788 int SSL_up_ref(SSL
*s
)
792 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
795 REF_PRINT_COUNT("SSL", s
);
796 REF_ASSERT_ISNT(i
< 2);
797 return ((i
> 1) ? 1 : 0);
800 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
801 unsigned int sid_ctx_len
)
803 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
804 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
805 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
808 ctx
->sid_ctx_length
= sid_ctx_len
;
809 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
814 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
815 unsigned int sid_ctx_len
)
817 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
818 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
819 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
822 ssl
->sid_ctx_length
= sid_ctx_len
;
823 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
828 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
830 CRYPTO_THREAD_write_lock(ctx
->lock
);
831 ctx
->generate_session_id
= cb
;
832 CRYPTO_THREAD_unlock(ctx
->lock
);
836 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
838 CRYPTO_THREAD_write_lock(ssl
->lock
);
839 ssl
->generate_session_id
= cb
;
840 CRYPTO_THREAD_unlock(ssl
->lock
);
844 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
848 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
849 * we can "construct" a session to give us the desired check - i.e. to
850 * find if there's a session in the hash table that would conflict with
851 * any new session built out of this id/id_len and the ssl_version in use
856 if (id_len
> sizeof r
.session_id
)
859 r
.ssl_version
= ssl
->version
;
860 r
.session_id_length
= id_len
;
861 memcpy(r
.session_id
, id
, id_len
);
863 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
864 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
865 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
869 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
871 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
874 int SSL_set_purpose(SSL
*s
, int purpose
)
876 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
879 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
881 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
884 int SSL_set_trust(SSL
*s
, int trust
)
886 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
889 int SSL_set1_host(SSL
*s
, const char *hostname
)
891 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
894 int SSL_add1_host(SSL
*s
, const char *hostname
)
896 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
899 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
901 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
904 const char *SSL_get0_peername(SSL
*s
)
906 return X509_VERIFY_PARAM_get0_peername(s
->param
);
909 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
911 return dane_ctx_enable(&ctx
->dane
);
914 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
916 unsigned long orig
= ctx
->dane
.flags
;
918 ctx
->dane
.flags
|= flags
;
922 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
924 unsigned long orig
= ctx
->dane
.flags
;
926 ctx
->dane
.flags
&= ~flags
;
930 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
932 SSL_DANE
*dane
= &s
->dane
;
934 if (s
->ctx
->dane
.mdmax
== 0) {
935 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
938 if (dane
->trecs
!= NULL
) {
939 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
944 * Default SNI name. This rejects empty names, while set1_host below
945 * accepts them and disables host name checks. To avoid side-effects with
946 * invalid input, set the SNI name first.
948 if (s
->ext
.hostname
== NULL
) {
949 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
950 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
955 /* Primary RFC6125 reference identifier */
956 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
957 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
963 dane
->dctx
= &s
->ctx
->dane
;
964 dane
->trecs
= sk_danetls_record_new_null();
966 if (dane
->trecs
== NULL
) {
967 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
973 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
975 unsigned long orig
= ssl
->dane
.flags
;
977 ssl
->dane
.flags
|= flags
;
981 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
983 unsigned long orig
= ssl
->dane
.flags
;
985 ssl
->dane
.flags
&= ~flags
;
989 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
991 SSL_DANE
*dane
= &s
->dane
;
993 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
997 *mcert
= dane
->mcert
;
999 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1004 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1005 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1007 SSL_DANE
*dane
= &s
->dane
;
1009 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1013 *usage
= dane
->mtlsa
->usage
;
1015 *selector
= dane
->mtlsa
->selector
;
1017 *mtype
= dane
->mtlsa
->mtype
;
1019 *data
= dane
->mtlsa
->data
;
1021 *dlen
= dane
->mtlsa
->dlen
;
1026 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1031 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1032 uint8_t mtype
, unsigned char *data
, size_t dlen
)
1034 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1037 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1040 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1043 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1045 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1048 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1050 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1053 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1058 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1063 void SSL_certs_clear(SSL
*s
)
1065 ssl_cert_clear_certs(s
->cert
);
1068 void SSL_free(SSL
*s
)
1075 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1076 REF_PRINT_COUNT("SSL", s
);
1079 REF_ASSERT_ISNT(i
< 0);
1081 X509_VERIFY_PARAM_free(s
->param
);
1082 dane_final(&s
->dane
);
1083 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1085 /* Ignore return value */
1086 ssl_free_wbio_buffer(s
);
1088 BIO_free_all(s
->wbio
);
1089 BIO_free_all(s
->rbio
);
1091 BUF_MEM_free(s
->init_buf
);
1093 /* add extra stuff */
1094 sk_SSL_CIPHER_free(s
->cipher_list
);
1095 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1097 /* Make the next call work :-) */
1098 if (s
->session
!= NULL
) {
1099 ssl_clear_bad_session(s
);
1100 SSL_SESSION_free(s
->session
);
1102 SSL_SESSION_free(s
->psksession
);
1103 OPENSSL_free(s
->psksession_id
);
1107 ssl_cert_free(s
->cert
);
1108 /* Free up if allocated */
1110 OPENSSL_free(s
->ext
.hostname
);
1111 SSL_CTX_free(s
->session_ctx
);
1112 #ifndef OPENSSL_NO_EC
1113 OPENSSL_free(s
->ext
.ecpointformats
);
1114 OPENSSL_free(s
->ext
.supportedgroups
);
1115 #endif /* OPENSSL_NO_EC */
1116 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1117 #ifndef OPENSSL_NO_OCSP
1118 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1120 #ifndef OPENSSL_NO_CT
1121 SCT_LIST_free(s
->scts
);
1122 OPENSSL_free(s
->ext
.scts
);
1124 OPENSSL_free(s
->ext
.ocsp
.resp
);
1125 OPENSSL_free(s
->ext
.alpn
);
1126 OPENSSL_free(s
->ext
.tls13_cookie
);
1127 OPENSSL_free(s
->clienthello
);
1129 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1131 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1133 if (s
->method
!= NULL
)
1134 s
->method
->ssl_free(s
);
1136 RECORD_LAYER_release(&s
->rlayer
);
1138 SSL_CTX_free(s
->ctx
);
1140 ASYNC_WAIT_CTX_free(s
->waitctx
);
1142 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1143 OPENSSL_free(s
->ext
.npn
);
1146 #ifndef OPENSSL_NO_SRTP
1147 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1150 RAND_DRBG_free(s
->drbg
);
1151 CRYPTO_THREAD_lock_free(s
->lock
);
1156 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1158 BIO_free_all(s
->rbio
);
1162 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1165 * If the output buffering BIO is still in place, remove it
1167 if (s
->bbio
!= NULL
)
1168 s
->wbio
= BIO_pop(s
->wbio
);
1170 BIO_free_all(s
->wbio
);
1173 /* Re-attach |bbio| to the new |wbio|. */
1174 if (s
->bbio
!= NULL
)
1175 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1178 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1181 * For historical reasons, this function has many different cases in
1182 * ownership handling.
1185 /* If nothing has changed, do nothing */
1186 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1190 * If the two arguments are equal then one fewer reference is granted by the
1191 * caller than we want to take
1193 if (rbio
!= NULL
&& rbio
== wbio
)
1197 * If only the wbio is changed only adopt one reference.
1199 if (rbio
== SSL_get_rbio(s
)) {
1200 SSL_set0_wbio(s
, wbio
);
1204 * There is an asymmetry here for historical reasons. If only the rbio is
1205 * changed AND the rbio and wbio were originally different, then we only
1206 * adopt one reference.
1208 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1209 SSL_set0_rbio(s
, rbio
);
1213 /* Otherwise, adopt both references. */
1214 SSL_set0_rbio(s
, rbio
);
1215 SSL_set0_wbio(s
, wbio
);
1218 BIO
*SSL_get_rbio(const SSL
*s
)
1223 BIO
*SSL_get_wbio(const SSL
*s
)
1225 if (s
->bbio
!= NULL
) {
1227 * If |bbio| is active, the true caller-configured BIO is its
1230 return BIO_next(s
->bbio
);
1235 int SSL_get_fd(const SSL
*s
)
1237 return SSL_get_rfd(s
);
1240 int SSL_get_rfd(const SSL
*s
)
1245 b
= SSL_get_rbio(s
);
1246 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1248 BIO_get_fd(r
, &ret
);
1252 int SSL_get_wfd(const SSL
*s
)
1257 b
= SSL_get_wbio(s
);
1258 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1260 BIO_get_fd(r
, &ret
);
1264 #ifndef OPENSSL_NO_SOCK
1265 int SSL_set_fd(SSL
*s
, int fd
)
1270 bio
= BIO_new(BIO_s_socket());
1273 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1276 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1277 SSL_set_bio(s
, bio
, bio
);
1283 int SSL_set_wfd(SSL
*s
, int fd
)
1285 BIO
*rbio
= SSL_get_rbio(s
);
1287 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1288 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1289 BIO
*bio
= BIO_new(BIO_s_socket());
1292 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1295 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1296 SSL_set0_wbio(s
, bio
);
1299 SSL_set0_wbio(s
, rbio
);
1304 int SSL_set_rfd(SSL
*s
, int fd
)
1306 BIO
*wbio
= SSL_get_wbio(s
);
1308 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1309 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1310 BIO
*bio
= BIO_new(BIO_s_socket());
1313 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1316 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1317 SSL_set0_rbio(s
, bio
);
1320 SSL_set0_rbio(s
, wbio
);
1327 /* return length of latest Finished message we sent, copy to 'buf' */
1328 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1332 if (s
->s3
!= NULL
) {
1333 ret
= s
->s3
->tmp
.finish_md_len
;
1336 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1341 /* return length of latest Finished message we expected, copy to 'buf' */
1342 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1346 if (s
->s3
!= NULL
) {
1347 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1350 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1355 int SSL_get_verify_mode(const SSL
*s
)
1357 return (s
->verify_mode
);
1360 int SSL_get_verify_depth(const SSL
*s
)
1362 return X509_VERIFY_PARAM_get_depth(s
->param
);
1365 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1366 return (s
->verify_callback
);
1369 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1371 return (ctx
->verify_mode
);
1374 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1376 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1379 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1380 return (ctx
->default_verify_callback
);
1383 void SSL_set_verify(SSL
*s
, int mode
,
1384 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1386 s
->verify_mode
= mode
;
1387 if (callback
!= NULL
)
1388 s
->verify_callback
= callback
;
1391 void SSL_set_verify_depth(SSL
*s
, int depth
)
1393 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1396 void SSL_set_read_ahead(SSL
*s
, int yes
)
1398 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1401 int SSL_get_read_ahead(const SSL
*s
)
1403 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1406 int SSL_pending(const SSL
*s
)
1408 size_t pending
= s
->method
->ssl_pending(s
);
1411 * SSL_pending cannot work properly if read-ahead is enabled
1412 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1413 * impossible to fix since SSL_pending cannot report errors that may be
1414 * observed while scanning the new data. (Note that SSL_pending() is
1415 * often used as a boolean value, so we'd better not return -1.)
1417 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1418 * we just return INT_MAX.
1420 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1423 int SSL_has_pending(const SSL
*s
)
1426 * Similar to SSL_pending() but returns a 1 to indicate that we have
1427 * unprocessed data available or 0 otherwise (as opposed to the number of
1428 * bytes available). Unlike SSL_pending() this will take into account
1429 * read_ahead data. A 1 return simply indicates that we have unprocessed
1430 * data. That data may not result in any application data, or we may fail
1431 * to parse the records for some reason.
1433 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1436 return RECORD_LAYER_read_pending(&s
->rlayer
);
1439 X509
*SSL_get_peer_certificate(const SSL
*s
)
1443 if ((s
== NULL
) || (s
->session
== NULL
))
1446 r
= s
->session
->peer
;
1456 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1460 if ((s
== NULL
) || (s
->session
== NULL
))
1463 r
= s
->session
->peer_chain
;
1466 * If we are a client, cert_chain includes the peer's own certificate; if
1467 * we are a server, it does not.
1474 * Now in theory, since the calling process own 't' it should be safe to
1475 * modify. We need to be able to read f without being hassled
1477 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1480 /* Do we need to to SSL locking? */
1481 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1486 * what if we are setup for one protocol version but want to talk another
1488 if (t
->method
!= f
->method
) {
1489 t
->method
->ssl_free(t
);
1490 t
->method
= f
->method
;
1491 if (t
->method
->ssl_new(t
) == 0)
1495 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1496 ssl_cert_free(t
->cert
);
1498 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1505 /* Fix this so it checks all the valid key/cert options */
1506 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1508 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1509 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1512 if (ctx
->cert
->key
->privatekey
== NULL
) {
1513 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1516 return (X509_check_private_key
1517 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1520 /* Fix this function so that it takes an optional type parameter */
1521 int SSL_check_private_key(const SSL
*ssl
)
1524 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1527 if (ssl
->cert
->key
->x509
== NULL
) {
1528 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1531 if (ssl
->cert
->key
->privatekey
== NULL
) {
1532 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1535 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1536 ssl
->cert
->key
->privatekey
));
1539 int SSL_waiting_for_async(SSL
*s
)
1547 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1549 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1553 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1556 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1557 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1559 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1563 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1567 int SSL_accept(SSL
*s
)
1569 if (s
->handshake_func
== NULL
) {
1570 /* Not properly initialized yet */
1571 SSL_set_accept_state(s
);
1574 return SSL_do_handshake(s
);
1577 int SSL_connect(SSL
*s
)
1579 if (s
->handshake_func
== NULL
) {
1580 /* Not properly initialized yet */
1581 SSL_set_connect_state(s
);
1584 return SSL_do_handshake(s
);
1587 long SSL_get_default_timeout(const SSL
*s
)
1589 return (s
->method
->get_timeout());
1592 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1593 int (*func
) (void *))
1596 if (s
->waitctx
== NULL
) {
1597 s
->waitctx
= ASYNC_WAIT_CTX_new();
1598 if (s
->waitctx
== NULL
)
1601 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1602 sizeof(struct ssl_async_args
))) {
1604 s
->rwstate
= SSL_NOTHING
;
1605 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1608 s
->rwstate
= SSL_ASYNC_PAUSED
;
1611 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1617 s
->rwstate
= SSL_NOTHING
;
1618 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1619 /* Shouldn't happen */
1624 static int ssl_io_intern(void *vargs
)
1626 struct ssl_async_args
*args
;
1631 args
= (struct ssl_async_args
*)vargs
;
1635 switch (args
->type
) {
1637 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1639 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1641 return args
->f
.func_other(s
);
1646 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1648 if (s
->handshake_func
== NULL
) {
1649 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1653 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1654 s
->rwstate
= SSL_NOTHING
;
1658 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1659 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1660 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1664 * If we are a client and haven't received the ServerHello etc then we
1667 ossl_statem_check_finish_init(s
, 0);
1669 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1670 struct ssl_async_args args
;
1676 args
.type
= READFUNC
;
1677 args
.f
.func_read
= s
->method
->ssl_read
;
1679 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1680 *readbytes
= s
->asyncrw
;
1683 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1687 int SSL_read(SSL
*s
, void *buf
, int num
)
1693 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1697 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1700 * The cast is safe here because ret should be <= INT_MAX because num is
1704 ret
= (int)readbytes
;
1709 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1711 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1718 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1723 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1724 return SSL_READ_EARLY_DATA_ERROR
;
1727 switch (s
->early_data_state
) {
1728 case SSL_EARLY_DATA_NONE
:
1729 if (!SSL_in_before(s
)) {
1730 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1731 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1732 return SSL_READ_EARLY_DATA_ERROR
;
1736 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1737 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1738 ret
= SSL_accept(s
);
1741 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1742 return SSL_READ_EARLY_DATA_ERROR
;
1746 case SSL_EARLY_DATA_READ_RETRY
:
1747 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1748 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1749 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1751 * State machine will update early_data_state to
1752 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1755 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1756 != SSL_EARLY_DATA_FINISHED_READING
)) {
1757 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1758 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1759 : SSL_READ_EARLY_DATA_ERROR
;
1762 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1765 return SSL_READ_EARLY_DATA_FINISH
;
1768 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1769 return SSL_READ_EARLY_DATA_ERROR
;
1773 int SSL_get_early_data_status(const SSL
*s
)
1775 return s
->ext
.early_data
;
1778 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1780 if (s
->handshake_func
== NULL
) {
1781 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1785 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1788 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1789 struct ssl_async_args args
;
1795 args
.type
= READFUNC
;
1796 args
.f
.func_read
= s
->method
->ssl_peek
;
1798 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1799 *readbytes
= s
->asyncrw
;
1802 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1806 int SSL_peek(SSL
*s
, void *buf
, int num
)
1812 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1816 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1819 * The cast is safe here because ret should be <= INT_MAX because num is
1823 ret
= (int)readbytes
;
1829 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1831 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1838 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1840 if (s
->handshake_func
== NULL
) {
1841 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1845 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1846 s
->rwstate
= SSL_NOTHING
;
1847 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1851 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1852 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1853 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1854 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1857 /* If we are a client and haven't sent the Finished we better do that */
1858 ossl_statem_check_finish_init(s
, 1);
1860 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1862 struct ssl_async_args args
;
1865 args
.buf
= (void *)buf
;
1867 args
.type
= WRITEFUNC
;
1868 args
.f
.func_write
= s
->method
->ssl_write
;
1870 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1871 *written
= s
->asyncrw
;
1874 return s
->method
->ssl_write(s
, buf
, num
, written
);
1878 int SSL_write(SSL
*s
, const void *buf
, int num
)
1884 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1888 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1891 * The cast is safe here because ret should be <= INT_MAX because num is
1900 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1902 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1909 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1911 int ret
, early_data_state
;
1913 switch (s
->early_data_state
) {
1914 case SSL_EARLY_DATA_NONE
:
1916 || !SSL_in_before(s
)
1917 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
1918 && (s
->psk_use_session_cb
== NULL
))) {
1919 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1920 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1925 case SSL_EARLY_DATA_CONNECT_RETRY
:
1926 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1927 ret
= SSL_connect(s
);
1930 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1935 case SSL_EARLY_DATA_WRITE_RETRY
:
1936 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1937 ret
= SSL_write_ex(s
, buf
, num
, written
);
1938 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1941 case SSL_EARLY_DATA_FINISHED_READING
:
1942 case SSL_EARLY_DATA_READ_RETRY
:
1943 early_data_state
= s
->early_data_state
;
1944 /* We are a server writing to an unauthenticated client */
1945 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1946 ret
= SSL_write_ex(s
, buf
, num
, written
);
1947 s
->early_data_state
= early_data_state
;
1951 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1956 int SSL_shutdown(SSL
*s
)
1959 * Note that this function behaves differently from what one might
1960 * expect. Return values are 0 for no success (yet), 1 for success; but
1961 * calling it once is usually not enough, even if blocking I/O is used
1962 * (see ssl3_shutdown).
1965 if (s
->handshake_func
== NULL
) {
1966 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1970 if (!SSL_in_init(s
)) {
1971 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1972 struct ssl_async_args args
;
1975 args
.type
= OTHERFUNC
;
1976 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1978 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1980 return s
->method
->ssl_shutdown(s
);
1983 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1988 int SSL_key_update(SSL
*s
, int updatetype
)
1991 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1992 * negotiated, and that it is appropriate to call SSL_key_update() instead
1993 * of SSL_renegotiate().
1995 if (!SSL_IS_TLS13(s
)) {
1996 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2000 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2001 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2002 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2006 if (!SSL_is_init_finished(s
)) {
2007 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2011 ossl_statem_set_in_init(s
, 1);
2012 s
->key_update
= updatetype
;
2016 int SSL_get_key_update_type(SSL
*s
)
2018 return s
->key_update
;
2021 int SSL_renegotiate(SSL
*s
)
2023 if (SSL_IS_TLS13(s
)) {
2024 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2028 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2029 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2036 return (s
->method
->ssl_renegotiate(s
));
2039 int SSL_renegotiate_abbreviated(SSL
*s
)
2041 if (SSL_IS_TLS13(s
)) {
2042 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2046 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2047 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2054 return (s
->method
->ssl_renegotiate(s
));
2057 int SSL_renegotiate_pending(SSL
*s
)
2060 * becomes true when negotiation is requested; false again once a
2061 * handshake has finished
2063 return (s
->renegotiate
!= 0);
2066 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2071 case SSL_CTRL_GET_READ_AHEAD
:
2072 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
2073 case SSL_CTRL_SET_READ_AHEAD
:
2074 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2075 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2078 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2079 s
->msg_callback_arg
= parg
;
2083 return (s
->mode
|= larg
);
2084 case SSL_CTRL_CLEAR_MODE
:
2085 return (s
->mode
&= ~larg
);
2086 case SSL_CTRL_GET_MAX_CERT_LIST
:
2087 return (long)(s
->max_cert_list
);
2088 case SSL_CTRL_SET_MAX_CERT_LIST
:
2091 l
= (long)s
->max_cert_list
;
2092 s
->max_cert_list
= (size_t)larg
;
2094 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2095 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2097 s
->max_send_fragment
= larg
;
2098 if (s
->max_send_fragment
< s
->split_send_fragment
)
2099 s
->split_send_fragment
= s
->max_send_fragment
;
2101 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2102 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2104 s
->split_send_fragment
= larg
;
2106 case SSL_CTRL_SET_MAX_PIPELINES
:
2107 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2109 s
->max_pipelines
= larg
;
2111 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2113 case SSL_CTRL_GET_RI_SUPPORT
:
2115 return s
->s3
->send_connection_binding
;
2118 case SSL_CTRL_CERT_FLAGS
:
2119 return (s
->cert
->cert_flags
|= larg
);
2120 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2121 return (s
->cert
->cert_flags
&= ~larg
);
2123 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2125 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2127 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2128 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2130 return TLS_CIPHER_LEN
;
2132 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2133 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2135 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2139 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2140 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2141 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2142 &s
->min_proto_version
);
2143 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2144 return s
->min_proto_version
;
2145 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2146 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2147 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2148 &s
->max_proto_version
);
2149 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2150 return s
->max_proto_version
;
2152 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2156 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2159 case SSL_CTRL_SET_MSG_CALLBACK
:
2160 s
->msg_callback
= (void (*)
2161 (int write_p
, int version
, int content_type
,
2162 const void *buf
, size_t len
, SSL
*ssl
,
2167 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2171 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2173 return ctx
->sessions
;
2176 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2179 /* For some cases with ctx == NULL perform syntax checks */
2182 #ifndef OPENSSL_NO_EC
2183 case SSL_CTRL_SET_GROUPS_LIST
:
2184 return tls1_set_groups_list(NULL
, NULL
, parg
);
2186 case SSL_CTRL_SET_SIGALGS_LIST
:
2187 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2188 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2195 case SSL_CTRL_GET_READ_AHEAD
:
2196 return (ctx
->read_ahead
);
2197 case SSL_CTRL_SET_READ_AHEAD
:
2198 l
= ctx
->read_ahead
;
2199 ctx
->read_ahead
= larg
;
2202 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2203 ctx
->msg_callback_arg
= parg
;
2206 case SSL_CTRL_GET_MAX_CERT_LIST
:
2207 return (long)(ctx
->max_cert_list
);
2208 case SSL_CTRL_SET_MAX_CERT_LIST
:
2211 l
= (long)ctx
->max_cert_list
;
2212 ctx
->max_cert_list
= (size_t)larg
;
2215 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2218 l
= (long)ctx
->session_cache_size
;
2219 ctx
->session_cache_size
= (size_t)larg
;
2221 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2222 return (long)(ctx
->session_cache_size
);
2223 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2224 l
= ctx
->session_cache_mode
;
2225 ctx
->session_cache_mode
= larg
;
2227 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2228 return (ctx
->session_cache_mode
);
2230 case SSL_CTRL_SESS_NUMBER
:
2231 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2232 case SSL_CTRL_SESS_CONNECT
:
2233 return (ctx
->stats
.sess_connect
);
2234 case SSL_CTRL_SESS_CONNECT_GOOD
:
2235 return (ctx
->stats
.sess_connect_good
);
2236 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2237 return (ctx
->stats
.sess_connect_renegotiate
);
2238 case SSL_CTRL_SESS_ACCEPT
:
2239 return (ctx
->stats
.sess_accept
);
2240 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2241 return (ctx
->stats
.sess_accept_good
);
2242 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2243 return (ctx
->stats
.sess_accept_renegotiate
);
2244 case SSL_CTRL_SESS_HIT
:
2245 return (ctx
->stats
.sess_hit
);
2246 case SSL_CTRL_SESS_CB_HIT
:
2247 return (ctx
->stats
.sess_cb_hit
);
2248 case SSL_CTRL_SESS_MISSES
:
2249 return (ctx
->stats
.sess_miss
);
2250 case SSL_CTRL_SESS_TIMEOUTS
:
2251 return (ctx
->stats
.sess_timeout
);
2252 case SSL_CTRL_SESS_CACHE_FULL
:
2253 return (ctx
->stats
.sess_cache_full
);
2255 return (ctx
->mode
|= larg
);
2256 case SSL_CTRL_CLEAR_MODE
:
2257 return (ctx
->mode
&= ~larg
);
2258 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2259 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2261 ctx
->max_send_fragment
= larg
;
2262 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2263 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2265 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2266 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2268 ctx
->split_send_fragment
= larg
;
2270 case SSL_CTRL_SET_MAX_PIPELINES
:
2271 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2273 ctx
->max_pipelines
= larg
;
2275 case SSL_CTRL_CERT_FLAGS
:
2276 return (ctx
->cert
->cert_flags
|= larg
);
2277 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2278 return (ctx
->cert
->cert_flags
&= ~larg
);
2279 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2280 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2281 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2282 &ctx
->min_proto_version
);
2283 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2284 return ctx
->min_proto_version
;
2285 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2286 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2287 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2288 &ctx
->max_proto_version
);
2289 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2290 return ctx
->max_proto_version
;
2292 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2296 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2299 case SSL_CTRL_SET_MSG_CALLBACK
:
2300 ctx
->msg_callback
= (void (*)
2301 (int write_p
, int version
, int content_type
,
2302 const void *buf
, size_t len
, SSL
*ssl
,
2307 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2311 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2320 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2321 const SSL_CIPHER
*const *bp
)
2323 if ((*ap
)->id
> (*bp
)->id
)
2325 if ((*ap
)->id
< (*bp
)->id
)
2330 /** return a STACK of the ciphers available for the SSL and in order of
2332 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2335 if (s
->cipher_list
!= NULL
) {
2336 return (s
->cipher_list
);
2337 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2338 return (s
->ctx
->cipher_list
);
2344 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2346 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2348 return s
->session
->ciphers
;
2351 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2353 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2355 ciphers
= SSL_get_ciphers(s
);
2358 ssl_set_client_disabled(s
);
2359 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2360 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2361 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2363 sk
= sk_SSL_CIPHER_new_null();
2366 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2367 sk_SSL_CIPHER_free(sk
);
2375 /** return a STACK of the ciphers available for the SSL and in order of
2377 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2380 if (s
->cipher_list_by_id
!= NULL
) {
2381 return (s
->cipher_list_by_id
);
2382 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2383 return (s
->ctx
->cipher_list_by_id
);
2389 /** The old interface to get the same thing as SSL_get_ciphers() */
2390 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2392 const SSL_CIPHER
*c
;
2393 STACK_OF(SSL_CIPHER
) *sk
;
2397 sk
= SSL_get_ciphers(s
);
2398 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2400 c
= sk_SSL_CIPHER_value(sk
, n
);
2406 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2408 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2411 return ctx
->cipher_list
;
2415 /** specify the ciphers to be used by default by the SSL_CTX */
2416 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2418 STACK_OF(SSL_CIPHER
) *sk
;
2420 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2421 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2423 * ssl_create_cipher_list may return an empty stack if it was unable to
2424 * find a cipher matching the given rule string (for example if the rule
2425 * string specifies a cipher which has been disabled). This is not an
2426 * error as far as ssl_create_cipher_list is concerned, and hence
2427 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2431 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2432 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2438 /** specify the ciphers to be used by the SSL */
2439 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2441 STACK_OF(SSL_CIPHER
) *sk
;
2443 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2444 &s
->cipher_list_by_id
, str
, s
->cert
);
2445 /* see comment in SSL_CTX_set_cipher_list */
2448 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2449 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2455 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2458 STACK_OF(SSL_CIPHER
) *sk
;
2459 const SSL_CIPHER
*c
;
2462 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2466 sk
= s
->session
->ciphers
;
2468 if (sk_SSL_CIPHER_num(sk
) == 0)
2471 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2474 c
= sk_SSL_CIPHER_value(sk
, i
);
2475 n
= strlen(c
->name
);
2491 /** return a servername extension value if provided in Client Hello, or NULL.
2492 * So far, only host_name types are defined (RFC 3546).
2495 const char *SSL_get_servername(const SSL
*s
, const int type
)
2497 if (type
!= TLSEXT_NAMETYPE_host_name
)
2500 return s
->session
&& !s
->ext
.hostname
?
2501 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2504 int SSL_get_servername_type(const SSL
*s
)
2507 && (!s
->ext
.hostname
? s
->session
->
2508 ext
.hostname
: s
->ext
.hostname
))
2509 return TLSEXT_NAMETYPE_host_name
;
2514 * SSL_select_next_proto implements the standard protocol selection. It is
2515 * expected that this function is called from the callback set by
2516 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2517 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2518 * not included in the length. A byte string of length 0 is invalid. No byte
2519 * string may be truncated. The current, but experimental algorithm for
2520 * selecting the protocol is: 1) If the server doesn't support NPN then this
2521 * is indicated to the callback. In this case, the client application has to
2522 * abort the connection or have a default application level protocol. 2) If
2523 * the server supports NPN, but advertises an empty list then the client
2524 * selects the first protocol in its list, but indicates via the API that this
2525 * fallback case was enacted. 3) Otherwise, the client finds the first
2526 * protocol in the server's list that it supports and selects this protocol.
2527 * This is because it's assumed that the server has better information about
2528 * which protocol a client should use. 4) If the client doesn't support any
2529 * of the server's advertised protocols, then this is treated the same as
2530 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2531 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2533 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2534 const unsigned char *server
,
2535 unsigned int server_len
,
2536 const unsigned char *client
, unsigned int client_len
)
2539 const unsigned char *result
;
2540 int status
= OPENSSL_NPN_UNSUPPORTED
;
2543 * For each protocol in server preference order, see if we support it.
2545 for (i
= 0; i
< server_len
;) {
2546 for (j
= 0; j
< client_len
;) {
2547 if (server
[i
] == client
[j
] &&
2548 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2549 /* We found a match */
2550 result
= &server
[i
];
2551 status
= OPENSSL_NPN_NEGOTIATED
;
2561 /* There's no overlap between our protocols and the server's list. */
2563 status
= OPENSSL_NPN_NO_OVERLAP
;
2566 *out
= (unsigned char *)result
+ 1;
2567 *outlen
= result
[0];
2571 #ifndef OPENSSL_NO_NEXTPROTONEG
2573 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2574 * client's requested protocol for this connection and returns 0. If the
2575 * client didn't request any protocol, then *data is set to NULL. Note that
2576 * the client can request any protocol it chooses. The value returned from
2577 * this function need not be a member of the list of supported protocols
2578 * provided by the callback.
2580 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2587 *len
= (unsigned int)s
->ext
.npn_len
;
2592 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2593 * a TLS server needs a list of supported protocols for Next Protocol
2594 * Negotiation. The returned list must be in wire format. The list is
2595 * returned by setting |out| to point to it and |outlen| to its length. This
2596 * memory will not be modified, but one should assume that the SSL* keeps a
2597 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2598 * wishes to advertise. Otherwise, no such extension will be included in the
2601 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2602 SSL_CTX_npn_advertised_cb_func cb
,
2605 ctx
->ext
.npn_advertised_cb
= cb
;
2606 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2610 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2611 * client needs to select a protocol from the server's provided list. |out|
2612 * must be set to point to the selected protocol (which may be within |in|).
2613 * The length of the protocol name must be written into |outlen|. The
2614 * server's advertised protocols are provided in |in| and |inlen|. The
2615 * callback can assume that |in| is syntactically valid. The client must
2616 * select a protocol. It is fatal to the connection if this callback returns
2617 * a value other than SSL_TLSEXT_ERR_OK.
2619 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2620 SSL_CTX_npn_select_cb_func cb
,
2623 ctx
->ext
.npn_select_cb
= cb
;
2624 ctx
->ext
.npn_select_cb_arg
= arg
;
2629 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2630 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2631 * length-prefixed strings). Returns 0 on success.
2633 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2634 unsigned int protos_len
)
2636 OPENSSL_free(ctx
->ext
.alpn
);
2637 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2638 if (ctx
->ext
.alpn
== NULL
) {
2639 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2642 ctx
->ext
.alpn_len
= protos_len
;
2648 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2649 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2650 * length-prefixed strings). Returns 0 on success.
2652 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2653 unsigned int protos_len
)
2655 OPENSSL_free(ssl
->ext
.alpn
);
2656 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2657 if (ssl
->ext
.alpn
== NULL
) {
2658 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2661 ssl
->ext
.alpn_len
= protos_len
;
2667 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2668 * called during ClientHello processing in order to select an ALPN protocol
2669 * from the client's list of offered protocols.
2671 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2672 SSL_CTX_alpn_select_cb_func cb
,
2675 ctx
->ext
.alpn_select_cb
= cb
;
2676 ctx
->ext
.alpn_select_cb_arg
= arg
;
2680 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2681 * On return it sets |*data| to point to |*len| bytes of protocol name
2682 * (not including the leading length-prefix byte). If the server didn't
2683 * respond with a negotiated protocol then |*len| will be zero.
2685 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2690 *data
= ssl
->s3
->alpn_selected
;
2694 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2697 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2698 const char *label
, size_t llen
,
2699 const unsigned char *context
, size_t contextlen
,
2702 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2705 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2707 contextlen
, use_context
);
2710 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2712 const unsigned char *session_id
= a
->session_id
;
2714 unsigned char tmp_storage
[4];
2716 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2717 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2718 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2719 session_id
= tmp_storage
;
2723 ((unsigned long)session_id
[0]) |
2724 ((unsigned long)session_id
[1] << 8L) |
2725 ((unsigned long)session_id
[2] << 16L) |
2726 ((unsigned long)session_id
[3] << 24L);
2731 * NB: If this function (or indeed the hash function which uses a sort of
2732 * coarser function than this one) is changed, ensure
2733 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2734 * being able to construct an SSL_SESSION that will collide with any existing
2735 * session with a matching session ID.
2737 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2739 if (a
->ssl_version
!= b
->ssl_version
)
2741 if (a
->session_id_length
!= b
->session_id_length
)
2743 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2747 * These wrapper functions should remain rather than redeclaring
2748 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2749 * variable. The reason is that the functions aren't static, they're exposed
2753 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2755 SSL_CTX
*ret
= NULL
;
2758 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2762 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2765 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2766 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2769 ret
= OPENSSL_zalloc(sizeof(*ret
));
2774 ret
->min_proto_version
= 0;
2775 ret
->max_proto_version
= 0;
2776 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2777 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2778 /* We take the system default. */
2779 ret
->session_timeout
= meth
->get_timeout();
2780 ret
->references
= 1;
2781 ret
->lock
= CRYPTO_THREAD_lock_new();
2782 if (ret
->lock
== NULL
) {
2783 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2787 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2788 ret
->verify_mode
= SSL_VERIFY_NONE
;
2789 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2792 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2793 if (ret
->sessions
== NULL
)
2795 ret
->cert_store
= X509_STORE_new();
2796 if (ret
->cert_store
== NULL
)
2798 #ifndef OPENSSL_NO_CT
2799 ret
->ctlog_store
= CTLOG_STORE_new();
2800 if (ret
->ctlog_store
== NULL
)
2803 if (!ssl_create_cipher_list(ret
->method
,
2804 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2805 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2806 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2807 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2811 ret
->param
= X509_VERIFY_PARAM_new();
2812 if (ret
->param
== NULL
)
2815 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2816 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2819 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2820 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2824 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2827 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2830 /* No compression for DTLS */
2831 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2832 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2834 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2835 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2837 /* Setup RFC5077 ticket keys */
2838 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2839 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2840 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2841 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2842 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2843 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2844 ret
->options
|= SSL_OP_NO_TICKET
;
2846 #ifndef OPENSSL_NO_SRP
2847 if (!SSL_CTX_SRP_CTX_init(ret
))
2850 #ifndef OPENSSL_NO_ENGINE
2851 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2852 # define eng_strx(x) #x
2853 # define eng_str(x) eng_strx(x)
2854 /* Use specific client engine automatically... ignore errors */
2857 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2860 ENGINE_load_builtin_engines();
2861 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2863 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2869 * Default is to connect to non-RI servers. When RI is more widely
2870 * deployed might change this.
2872 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2874 * Disable compression by default to prevent CRIME. Applications can
2875 * re-enable compression by configuring
2876 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2877 * or by using the SSL_CONF library.
2879 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2881 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2884 * Default max early data is a fully loaded single record. Could be split
2885 * across multiple records in practice
2887 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2891 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2897 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2901 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2904 REF_PRINT_COUNT("SSL_CTX", ctx
);
2905 REF_ASSERT_ISNT(i
< 2);
2906 return ((i
> 1) ? 1 : 0);
2909 void SSL_CTX_free(SSL_CTX
*a
)
2916 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2917 REF_PRINT_COUNT("SSL_CTX", a
);
2920 REF_ASSERT_ISNT(i
< 0);
2922 X509_VERIFY_PARAM_free(a
->param
);
2923 dane_ctx_final(&a
->dane
);
2926 * Free internal session cache. However: the remove_cb() may reference
2927 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2928 * after the sessions were flushed.
2929 * As the ex_data handling routines might also touch the session cache,
2930 * the most secure solution seems to be: empty (flush) the cache, then
2931 * free ex_data, then finally free the cache.
2932 * (See ticket [openssl.org #212].)
2934 if (a
->sessions
!= NULL
)
2935 SSL_CTX_flush_sessions(a
, 0);
2937 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2938 lh_SSL_SESSION_free(a
->sessions
);
2939 X509_STORE_free(a
->cert_store
);
2940 #ifndef OPENSSL_NO_CT
2941 CTLOG_STORE_free(a
->ctlog_store
);
2943 sk_SSL_CIPHER_free(a
->cipher_list
);
2944 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2945 ssl_cert_free(a
->cert
);
2946 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2947 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2948 a
->comp_methods
= NULL
;
2949 #ifndef OPENSSL_NO_SRTP
2950 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2952 #ifndef OPENSSL_NO_SRP
2953 SSL_CTX_SRP_CTX_free(a
);
2955 #ifndef OPENSSL_NO_ENGINE
2956 ENGINE_finish(a
->client_cert_engine
);
2959 #ifndef OPENSSL_NO_EC
2960 OPENSSL_free(a
->ext
.ecpointformats
);
2961 OPENSSL_free(a
->ext
.supportedgroups
);
2963 OPENSSL_free(a
->ext
.alpn
);
2965 CRYPTO_THREAD_lock_free(a
->lock
);
2970 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2972 ctx
->default_passwd_callback
= cb
;
2975 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2977 ctx
->default_passwd_callback_userdata
= u
;
2980 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2982 return ctx
->default_passwd_callback
;
2985 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2987 return ctx
->default_passwd_callback_userdata
;
2990 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2992 s
->default_passwd_callback
= cb
;
2995 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2997 s
->default_passwd_callback_userdata
= u
;
3000 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3002 return s
->default_passwd_callback
;
3005 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3007 return s
->default_passwd_callback_userdata
;
3010 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3011 int (*cb
) (X509_STORE_CTX
*, void *),
3014 ctx
->app_verify_callback
= cb
;
3015 ctx
->app_verify_arg
= arg
;
3018 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3019 int (*cb
) (int, X509_STORE_CTX
*))
3021 ctx
->verify_mode
= mode
;
3022 ctx
->default_verify_callback
= cb
;
3025 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3027 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3030 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3032 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3035 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3037 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3040 void ssl_set_masks(SSL
*s
)
3043 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
3044 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3045 unsigned long mask_k
, mask_a
;
3046 #ifndef OPENSSL_NO_EC
3047 int have_ecc_cert
, ecdsa_ok
;
3052 #ifndef OPENSSL_NO_DH
3053 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3058 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3059 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3060 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3061 #ifndef OPENSSL_NO_EC
3062 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3068 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
3069 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3072 #ifndef OPENSSL_NO_GOST
3073 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3074 mask_k
|= SSL_kGOST
;
3075 mask_a
|= SSL_aGOST12
;
3077 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3078 mask_k
|= SSL_kGOST
;
3079 mask_a
|= SSL_aGOST12
;
3081 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3082 mask_k
|= SSL_kGOST
;
3083 mask_a
|= SSL_aGOST01
;
3094 * If we only have an RSA-PSS certificate allow RSA authentication
3095 * if TLS 1.2 and peer supports it.
3098 if (rsa_enc
|| rsa_sign
|| (ssl_has_cert(s
, SSL_PKEY_RSA_PSS_SIGN
)
3099 && pvalid
[SSL_PKEY_RSA_PSS_SIGN
] & CERT_PKEY_EXPLICIT_SIGN
3100 && TLS1_get_version(s
) == TLS1_2_VERSION
))
3107 mask_a
|= SSL_aNULL
;
3110 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3111 * depending on the key usage extension.
3113 #ifndef OPENSSL_NO_EC
3114 if (have_ecc_cert
) {
3116 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3117 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3118 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3121 mask_a
|= SSL_aECDSA
;
3123 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3124 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3125 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3126 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3127 mask_a
|= SSL_aECDSA
;
3130 #ifndef OPENSSL_NO_EC
3131 mask_k
|= SSL_kECDHE
;
3134 #ifndef OPENSSL_NO_PSK
3137 if (mask_k
& SSL_kRSA
)
3138 mask_k
|= SSL_kRSAPSK
;
3139 if (mask_k
& SSL_kDHE
)
3140 mask_k
|= SSL_kDHEPSK
;
3141 if (mask_k
& SSL_kECDHE
)
3142 mask_k
|= SSL_kECDHEPSK
;
3145 s
->s3
->tmp
.mask_k
= mask_k
;
3146 s
->s3
->tmp
.mask_a
= mask_a
;
3149 #ifndef OPENSSL_NO_EC
3151 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3153 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3154 /* key usage, if present, must allow signing */
3155 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3156 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3157 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3161 return 1; /* all checks are ok */
3166 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3167 size_t *serverinfo_length
)
3169 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3170 *serverinfo_length
= 0;
3172 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3175 *serverinfo
= cpk
->serverinfo
;
3176 *serverinfo_length
= cpk
->serverinfo_length
;
3180 void ssl_update_cache(SSL
*s
, int mode
)
3185 * If the session_id_length is 0, we are not supposed to cache it, and it
3186 * would be rather hard to do anyway :-)
3188 if (s
->session
->session_id_length
== 0)
3191 i
= s
->session_ctx
->session_cache_mode
;
3193 && (!s
->hit
|| SSL_IS_TLS13(s
))
3194 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) != 0
3195 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3196 && s
->session_ctx
->new_session_cb
!= NULL
) {
3197 SSL_SESSION_up_ref(s
->session
);
3198 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3199 SSL_SESSION_free(s
->session
);
3202 /* auto flush every 255 connections */
3203 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3204 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3205 ? s
->session_ctx
->stats
.sess_connect_good
3206 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3207 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3212 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3217 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3222 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3226 if (s
->method
!= meth
) {
3227 const SSL_METHOD
*sm
= s
->method
;
3228 int (*hf
) (SSL
*) = s
->handshake_func
;
3230 if (sm
->version
== meth
->version
)
3235 ret
= s
->method
->ssl_new(s
);
3238 if (hf
== sm
->ssl_connect
)
3239 s
->handshake_func
= meth
->ssl_connect
;
3240 else if (hf
== sm
->ssl_accept
)
3241 s
->handshake_func
= meth
->ssl_accept
;
3246 int SSL_get_error(const SSL
*s
, int i
)
3253 return (SSL_ERROR_NONE
);
3256 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3257 * where we do encode the error
3259 if ((l
= ERR_peek_error()) != 0) {
3260 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3261 return (SSL_ERROR_SYSCALL
);
3263 return (SSL_ERROR_SSL
);
3266 if (SSL_want_read(s
)) {
3267 bio
= SSL_get_rbio(s
);
3268 if (BIO_should_read(bio
))
3269 return (SSL_ERROR_WANT_READ
);
3270 else if (BIO_should_write(bio
))
3272 * This one doesn't make too much sense ... We never try to write
3273 * to the rbio, and an application program where rbio and wbio
3274 * are separate couldn't even know what it should wait for.
3275 * However if we ever set s->rwstate incorrectly (so that we have
3276 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3277 * wbio *are* the same, this test works around that bug; so it
3278 * might be safer to keep it.
3280 return (SSL_ERROR_WANT_WRITE
);
3281 else if (BIO_should_io_special(bio
)) {
3282 reason
= BIO_get_retry_reason(bio
);
3283 if (reason
== BIO_RR_CONNECT
)
3284 return (SSL_ERROR_WANT_CONNECT
);
3285 else if (reason
== BIO_RR_ACCEPT
)
3286 return (SSL_ERROR_WANT_ACCEPT
);
3288 return (SSL_ERROR_SYSCALL
); /* unknown */
3292 if (SSL_want_write(s
)) {
3293 /* Access wbio directly - in order to use the buffered bio if present */
3295 if (BIO_should_write(bio
))
3296 return (SSL_ERROR_WANT_WRITE
);
3297 else if (BIO_should_read(bio
))
3299 * See above (SSL_want_read(s) with BIO_should_write(bio))
3301 return (SSL_ERROR_WANT_READ
);
3302 else if (BIO_should_io_special(bio
)) {
3303 reason
= BIO_get_retry_reason(bio
);
3304 if (reason
== BIO_RR_CONNECT
)
3305 return (SSL_ERROR_WANT_CONNECT
);
3306 else if (reason
== BIO_RR_ACCEPT
)
3307 return (SSL_ERROR_WANT_ACCEPT
);
3309 return (SSL_ERROR_SYSCALL
);
3312 if (SSL_want_x509_lookup(s
))
3313 return (SSL_ERROR_WANT_X509_LOOKUP
);
3314 if (SSL_want_async(s
))
3315 return SSL_ERROR_WANT_ASYNC
;
3316 if (SSL_want_async_job(s
))
3317 return SSL_ERROR_WANT_ASYNC_JOB
;
3318 if (SSL_want_client_hello_cb(s
))
3319 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3321 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3322 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3323 return (SSL_ERROR_ZERO_RETURN
);
3325 return (SSL_ERROR_SYSCALL
);
3328 static int ssl_do_handshake_intern(void *vargs
)
3330 struct ssl_async_args
*args
;
3333 args
= (struct ssl_async_args
*)vargs
;
3336 return s
->handshake_func(s
);
3339 int SSL_do_handshake(SSL
*s
)
3343 if (s
->handshake_func
== NULL
) {
3344 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3348 ossl_statem_check_finish_init(s
, -1);
3350 s
->method
->ssl_renegotiate_check(s
, 0);
3352 if (SSL_is_server(s
)) {
3353 /* clear SNI settings at server-side */
3354 OPENSSL_free(s
->ext
.hostname
);
3355 s
->ext
.hostname
= NULL
;
3358 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3359 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3360 struct ssl_async_args args
;
3364 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3366 ret
= s
->handshake_func(s
);
3372 void SSL_set_accept_state(SSL
*s
)
3376 ossl_statem_clear(s
);
3377 s
->handshake_func
= s
->method
->ssl_accept
;
3381 void SSL_set_connect_state(SSL
*s
)
3385 ossl_statem_clear(s
);
3386 s
->handshake_func
= s
->method
->ssl_connect
;
3390 int ssl_undefined_function(SSL
*s
)
3392 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3396 int ssl_undefined_void_function(void)
3398 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3399 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3403 int ssl_undefined_const_function(const SSL
*s
)
3408 const SSL_METHOD
*ssl_bad_method(int ver
)
3410 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3414 const char *ssl_protocol_to_string(int version
)
3418 case TLS1_3_VERSION
:
3421 case TLS1_2_VERSION
:
3424 case TLS1_1_VERSION
:
3439 case DTLS1_2_VERSION
:
3447 const char *SSL_get_version(const SSL
*s
)
3449 return ssl_protocol_to_string(s
->version
);
3452 SSL
*SSL_dup(SSL
*s
)
3454 STACK_OF(X509_NAME
) *sk
;
3459 /* If we're not quiescent, just up_ref! */
3460 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3461 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3466 * Otherwise, copy configuration state, and session if set.
3468 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3471 if (s
->session
!= NULL
) {
3473 * Arranges to share the same session via up_ref. This "copies"
3474 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3476 if (!SSL_copy_session_id(ret
, s
))
3480 * No session has been established yet, so we have to expect that
3481 * s->cert or ret->cert will be changed later -- they should not both
3482 * point to the same object, and thus we can't use
3483 * SSL_copy_session_id.
3485 if (!SSL_set_ssl_method(ret
, s
->method
))
3488 if (s
->cert
!= NULL
) {
3489 ssl_cert_free(ret
->cert
);
3490 ret
->cert
= ssl_cert_dup(s
->cert
);
3491 if (ret
->cert
== NULL
)
3495 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3496 (int)s
->sid_ctx_length
))
3500 if (!ssl_dane_dup(ret
, s
))
3502 ret
->version
= s
->version
;
3503 ret
->options
= s
->options
;
3504 ret
->mode
= s
->mode
;
3505 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3506 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3507 ret
->msg_callback
= s
->msg_callback
;
3508 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3509 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3510 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3511 ret
->generate_session_id
= s
->generate_session_id
;
3513 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3515 /* copy app data, a little dangerous perhaps */
3516 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3519 /* setup rbio, and wbio */
3520 if (s
->rbio
!= NULL
) {
3521 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3524 if (s
->wbio
!= NULL
) {
3525 if (s
->wbio
!= s
->rbio
) {
3526 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3529 BIO_up_ref(ret
->rbio
);
3530 ret
->wbio
= ret
->rbio
;
3534 ret
->server
= s
->server
;
3535 if (s
->handshake_func
) {
3537 SSL_set_accept_state(ret
);
3539 SSL_set_connect_state(ret
);
3541 ret
->shutdown
= s
->shutdown
;
3544 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3545 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3547 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3549 /* dup the cipher_list and cipher_list_by_id stacks */
3550 if (s
->cipher_list
!= NULL
) {
3551 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3554 if (s
->cipher_list_by_id
!= NULL
)
3555 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3559 /* Dup the client_CA list */
3560 if (s
->ca_names
!= NULL
) {
3561 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3564 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3565 xn
= sk_X509_NAME_value(sk
, i
);
3566 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3579 void ssl_clear_cipher_ctx(SSL
*s
)
3581 if (s
->enc_read_ctx
!= NULL
) {
3582 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3583 s
->enc_read_ctx
= NULL
;
3585 if (s
->enc_write_ctx
!= NULL
) {
3586 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3587 s
->enc_write_ctx
= NULL
;
3589 #ifndef OPENSSL_NO_COMP
3590 COMP_CTX_free(s
->expand
);
3592 COMP_CTX_free(s
->compress
);
3597 X509
*SSL_get_certificate(const SSL
*s
)
3599 if (s
->cert
!= NULL
)
3600 return (s
->cert
->key
->x509
);
3605 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3607 if (s
->cert
!= NULL
)
3608 return (s
->cert
->key
->privatekey
);
3613 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3615 if (ctx
->cert
!= NULL
)
3616 return ctx
->cert
->key
->x509
;
3621 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3623 if (ctx
->cert
!= NULL
)
3624 return ctx
->cert
->key
->privatekey
;
3629 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3631 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3632 return (s
->session
->cipher
);
3636 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
3638 return s
->s3
->tmp
.new_cipher
;
3641 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3643 #ifndef OPENSSL_NO_COMP
3644 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3650 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3652 #ifndef OPENSSL_NO_COMP
3653 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3659 int ssl_init_wbio_buffer(SSL
*s
)
3663 if (s
->bbio
!= NULL
) {
3664 /* Already buffered. */
3668 bbio
= BIO_new(BIO_f_buffer());
3669 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3671 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3675 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3680 int ssl_free_wbio_buffer(SSL
*s
)
3682 /* callers ensure s is never null */
3683 if (s
->bbio
== NULL
)
3686 s
->wbio
= BIO_pop(s
->wbio
);
3687 if (!ossl_assert(s
->wbio
!= NULL
))
3695 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3697 ctx
->quiet_shutdown
= mode
;
3700 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3702 return (ctx
->quiet_shutdown
);
3705 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3707 s
->quiet_shutdown
= mode
;
3710 int SSL_get_quiet_shutdown(const SSL
*s
)
3712 return (s
->quiet_shutdown
);
3715 void SSL_set_shutdown(SSL
*s
, int mode
)
3720 int SSL_get_shutdown(const SSL
*s
)
3725 int SSL_version(const SSL
*s
)
3730 int SSL_client_version(const SSL
*s
)
3732 return s
->client_version
;
3735 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3740 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3743 if (ssl
->ctx
== ctx
)
3746 ctx
= ssl
->session_ctx
;
3747 new_cert
= ssl_cert_dup(ctx
->cert
);
3748 if (new_cert
== NULL
) {
3752 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3753 ssl_cert_free(new_cert
);
3757 ssl_cert_free(ssl
->cert
);
3758 ssl
->cert
= new_cert
;
3761 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3762 * so setter APIs must prevent invalid lengths from entering the system.
3764 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3768 * If the session ID context matches that of the parent SSL_CTX,
3769 * inherit it from the new SSL_CTX as well. If however the context does
3770 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3771 * leave it unchanged.
3773 if ((ssl
->ctx
!= NULL
) &&
3774 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3775 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3776 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3777 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3780 SSL_CTX_up_ref(ctx
);
3781 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3787 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3789 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3792 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3794 X509_LOOKUP
*lookup
;
3796 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3799 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3801 /* Clear any errors if the default directory does not exist */
3807 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3809 X509_LOOKUP
*lookup
;
3811 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3815 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3817 /* Clear any errors if the default file does not exist */
3823 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3826 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3829 void SSL_set_info_callback(SSL
*ssl
,
3830 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3832 ssl
->info_callback
= cb
;
3836 * One compiler (Diab DCC) doesn't like argument names in returned function
3839 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3842 return ssl
->info_callback
;
3845 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3847 ssl
->verify_result
= arg
;
3850 long SSL_get_verify_result(const SSL
*ssl
)
3852 return (ssl
->verify_result
);
3855 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3858 return sizeof(ssl
->s3
->client_random
);
3859 if (outlen
> sizeof(ssl
->s3
->client_random
))
3860 outlen
= sizeof(ssl
->s3
->client_random
);
3861 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3865 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3868 return sizeof(ssl
->s3
->server_random
);
3869 if (outlen
> sizeof(ssl
->s3
->server_random
))
3870 outlen
= sizeof(ssl
->s3
->server_random
);
3871 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3875 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3876 unsigned char *out
, size_t outlen
)
3879 return session
->master_key_length
;
3880 if (outlen
> session
->master_key_length
)
3881 outlen
= session
->master_key_length
;
3882 memcpy(out
, session
->master_key
, outlen
);
3886 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
3889 if (len
> sizeof(sess
->master_key
))
3892 memcpy(sess
->master_key
, in
, len
);
3893 sess
->master_key_length
= len
;
3898 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3900 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3903 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3905 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3908 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3910 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3913 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3915 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3918 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3920 return (ctx
->cert_store
);
3923 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3925 X509_STORE_free(ctx
->cert_store
);
3926 ctx
->cert_store
= store
;
3929 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3932 X509_STORE_up_ref(store
);
3933 SSL_CTX_set_cert_store(ctx
, store
);
3936 int SSL_want(const SSL
*s
)
3938 return (s
->rwstate
);
3942 * \brief Set the callback for generating temporary DH keys.
3943 * \param ctx the SSL context.
3944 * \param dh the callback
3947 #ifndef OPENSSL_NO_DH
3948 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3949 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3952 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3955 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3958 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3962 #ifndef OPENSSL_NO_PSK
3963 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3965 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3966 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3969 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3970 if (identity_hint
!= NULL
) {
3971 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3972 if (ctx
->cert
->psk_identity_hint
== NULL
)
3975 ctx
->cert
->psk_identity_hint
= NULL
;
3979 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3984 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3985 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3988 OPENSSL_free(s
->cert
->psk_identity_hint
);
3989 if (identity_hint
!= NULL
) {
3990 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3991 if (s
->cert
->psk_identity_hint
== NULL
)
3994 s
->cert
->psk_identity_hint
= NULL
;
3998 const char *SSL_get_psk_identity_hint(const SSL
*s
)
4000 if (s
== NULL
|| s
->session
== NULL
)
4002 return (s
->session
->psk_identity_hint
);
4005 const char *SSL_get_psk_identity(const SSL
*s
)
4007 if (s
== NULL
|| s
->session
== NULL
)
4009 return (s
->session
->psk_identity
);
4012 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4014 s
->psk_client_callback
= cb
;
4017 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4019 ctx
->psk_client_callback
= cb
;
4022 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4024 s
->psk_server_callback
= cb
;
4027 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4029 ctx
->psk_server_callback
= cb
;
4033 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4035 s
->psk_find_session_cb
= cb
;
4038 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4039 SSL_psk_find_session_cb_func cb
)
4041 ctx
->psk_find_session_cb
= cb
;
4044 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4046 s
->psk_use_session_cb
= cb
;
4049 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4050 SSL_psk_use_session_cb_func cb
)
4052 ctx
->psk_use_session_cb
= cb
;
4055 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4056 void (*cb
) (int write_p
, int version
,
4057 int content_type
, const void *buf
,
4058 size_t len
, SSL
*ssl
, void *arg
))
4060 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4063 void SSL_set_msg_callback(SSL
*ssl
,
4064 void (*cb
) (int write_p
, int version
,
4065 int content_type
, const void *buf
,
4066 size_t len
, SSL
*ssl
, void *arg
))
4068 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4071 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4072 int (*cb
) (SSL
*ssl
,
4076 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4077 (void (*)(void))cb
);
4080 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4081 int (*cb
) (SSL
*ssl
,
4082 int is_forward_secure
))
4084 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4085 (void (*)(void))cb
);
4088 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4089 size_t (*cb
) (SSL
*ssl
, int type
,
4090 size_t len
, void *arg
))
4092 ctx
->record_padding_cb
= cb
;
4095 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4097 ctx
->record_padding_arg
= arg
;
4100 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
4102 return ctx
->record_padding_arg
;
4105 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4107 /* block size of 0 or 1 is basically no padding */
4108 if (block_size
== 1)
4109 ctx
->block_padding
= 0;
4110 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4111 ctx
->block_padding
= block_size
;
4117 void SSL_set_record_padding_callback(SSL
*ssl
,
4118 size_t (*cb
) (SSL
*ssl
, int type
,
4119 size_t len
, void *arg
))
4121 ssl
->record_padding_cb
= cb
;
4124 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4126 ssl
->record_padding_arg
= arg
;
4129 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
4131 return ssl
->record_padding_arg
;
4134 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4136 /* block size of 0 or 1 is basically no padding */
4137 if (block_size
== 1)
4138 ssl
->block_padding
= 0;
4139 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4140 ssl
->block_padding
= block_size
;
4147 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4148 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4149 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4150 * Returns the newly allocated ctx;
4153 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4155 ssl_clear_hash_ctx(hash
);
4156 *hash
= EVP_MD_CTX_new();
4157 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4158 EVP_MD_CTX_free(*hash
);
4165 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4168 EVP_MD_CTX_free(*hash
);
4172 /* Retrieve handshake hashes */
4173 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4176 EVP_MD_CTX
*ctx
= NULL
;
4177 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
4178 int hashleni
= EVP_MD_CTX_size(hdgst
);
4181 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
4184 ctx
= EVP_MD_CTX_new();
4188 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4189 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
4192 *hashlen
= hashleni
;
4196 EVP_MD_CTX_free(ctx
);
4200 int SSL_session_reused(SSL
*s
)
4205 int SSL_is_server(const SSL
*s
)
4210 #if OPENSSL_API_COMPAT < 0x10100000L
4211 void SSL_set_debug(SSL
*s
, int debug
)
4213 /* Old function was do-nothing anyway... */
4219 void SSL_set_security_level(SSL
*s
, int level
)
4221 s
->cert
->sec_level
= level
;
4224 int SSL_get_security_level(const SSL
*s
)
4226 return s
->cert
->sec_level
;
4229 void SSL_set_security_callback(SSL
*s
,
4230 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4231 int op
, int bits
, int nid
,
4232 void *other
, void *ex
))
4234 s
->cert
->sec_cb
= cb
;
4237 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4238 const SSL_CTX
*ctx
, int op
,
4239 int bits
, int nid
, void *other
,
4241 return s
->cert
->sec_cb
;
4244 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4246 s
->cert
->sec_ex
= ex
;
4249 void *SSL_get0_security_ex_data(const SSL
*s
)
4251 return s
->cert
->sec_ex
;
4254 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4256 ctx
->cert
->sec_level
= level
;
4259 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4261 return ctx
->cert
->sec_level
;
4264 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4265 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4266 int op
, int bits
, int nid
,
4267 void *other
, void *ex
))
4269 ctx
->cert
->sec_cb
= cb
;
4272 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4278 return ctx
->cert
->sec_cb
;
4281 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4283 ctx
->cert
->sec_ex
= ex
;
4286 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4288 return ctx
->cert
->sec_ex
;
4292 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4293 * can return unsigned long, instead of the generic long return value from the
4294 * control interface.
4296 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4298 return ctx
->options
;
4301 unsigned long SSL_get_options(const SSL
*s
)
4306 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4308 return ctx
->options
|= op
;
4311 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4313 return s
->options
|= op
;
4316 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4318 return ctx
->options
&= ~op
;
4321 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4323 return s
->options
&= ~op
;
4326 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4328 return s
->verified_chain
;
4331 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4333 #ifndef OPENSSL_NO_CT
4336 * Moves SCTs from the |src| stack to the |dst| stack.
4337 * The source of each SCT will be set to |origin|.
4338 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4340 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4342 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4343 sct_source_t origin
)
4349 *dst
= sk_SCT_new_null();
4351 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4356 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4357 if (SCT_set_source(sct
, origin
) != 1)
4360 if (sk_SCT_push(*dst
, sct
) <= 0)
4368 sk_SCT_push(src
, sct
); /* Put the SCT back */
4373 * Look for data collected during ServerHello and parse if found.
4374 * Returns the number of SCTs extracted.
4376 static int ct_extract_tls_extension_scts(SSL
*s
)
4378 int scts_extracted
= 0;
4380 if (s
->ext
.scts
!= NULL
) {
4381 const unsigned char *p
= s
->ext
.scts
;
4382 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4384 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4386 SCT_LIST_free(scts
);
4389 return scts_extracted
;
4393 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4394 * contains an SCT X509 extension. They will be stored in |s->scts|.
4396 * - The number of SCTs extracted, assuming an OCSP response exists.
4397 * - 0 if no OCSP response exists or it contains no SCTs.
4398 * - A negative integer if an error occurs.
4400 static int ct_extract_ocsp_response_scts(SSL
*s
)
4402 # ifndef OPENSSL_NO_OCSP
4403 int scts_extracted
= 0;
4404 const unsigned char *p
;
4405 OCSP_BASICRESP
*br
= NULL
;
4406 OCSP_RESPONSE
*rsp
= NULL
;
4407 STACK_OF(SCT
) *scts
= NULL
;
4410 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4413 p
= s
->ext
.ocsp
.resp
;
4414 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4418 br
= OCSP_response_get1_basic(rsp
);
4422 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4423 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4429 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4431 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4432 if (scts_extracted
< 0)
4436 SCT_LIST_free(scts
);
4437 OCSP_BASICRESP_free(br
);
4438 OCSP_RESPONSE_free(rsp
);
4439 return scts_extracted
;
4441 /* Behave as if no OCSP response exists */
4447 * Attempts to extract SCTs from the peer certificate.
4448 * Return the number of SCTs extracted, or a negative integer if an error
4451 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4453 int scts_extracted
= 0;
4454 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4457 STACK_OF(SCT
) *scts
=
4458 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4461 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4463 SCT_LIST_free(scts
);
4466 return scts_extracted
;
4470 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4471 * response (if it exists) and X509v3 extensions in the certificate.
4472 * Returns NULL if an error occurs.
4474 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4476 if (!s
->scts_parsed
) {
4477 if (ct_extract_tls_extension_scts(s
) < 0 ||
4478 ct_extract_ocsp_response_scts(s
) < 0 ||
4479 ct_extract_x509v3_extension_scts(s
) < 0)
4489 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4490 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4495 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4496 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4498 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4501 for (i
= 0; i
< count
; ++i
) {
4502 SCT
*sct
= sk_SCT_value(scts
, i
);
4503 int status
= SCT_get_validation_status(sct
);
4505 if (status
== SCT_VALIDATION_STATUS_VALID
)
4508 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4512 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4516 * Since code exists that uses the custom extension handler for CT, look
4517 * for this and throw an error if they have already registered to use CT.
4519 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4520 TLSEXT_TYPE_signed_certificate_timestamp
))
4522 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4523 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4527 if (callback
!= NULL
) {
4529 * If we are validating CT, then we MUST accept SCTs served via OCSP
4531 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4535 s
->ct_validation_callback
= callback
;
4536 s
->ct_validation_callback_arg
= arg
;
4541 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4542 ssl_ct_validation_cb callback
, void *arg
)
4545 * Since code exists that uses the custom extension handler for CT, look for
4546 * this and throw an error if they have already registered to use CT.
4548 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4549 TLSEXT_TYPE_signed_certificate_timestamp
))
4551 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4552 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4556 ctx
->ct_validation_callback
= callback
;
4557 ctx
->ct_validation_callback_arg
= arg
;
4561 int SSL_ct_is_enabled(const SSL
*s
)
4563 return s
->ct_validation_callback
!= NULL
;
4566 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4568 return ctx
->ct_validation_callback
!= NULL
;
4571 int ssl_validate_ct(SSL
*s
)
4574 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4576 SSL_DANE
*dane
= &s
->dane
;
4577 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4578 const STACK_OF(SCT
) *scts
;
4581 * If no callback is set, the peer is anonymous, or its chain is invalid,
4582 * skip SCT validation - just return success. Applications that continue
4583 * handshakes without certificates, with unverified chains, or pinned leaf
4584 * certificates are outside the scope of the WebPKI and CT.
4586 * The above exclusions notwithstanding the vast majority of peers will
4587 * have rather ordinary certificate chains validated by typical
4588 * applications that perform certificate verification and therefore will
4589 * process SCTs when enabled.
4591 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4592 s
->verify_result
!= X509_V_OK
||
4593 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4597 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4598 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4600 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4601 switch (dane
->mtlsa
->usage
) {
4602 case DANETLS_USAGE_DANE_TA
:
4603 case DANETLS_USAGE_DANE_EE
:
4608 ctx
= CT_POLICY_EVAL_CTX_new();
4610 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4614 issuer
= sk_X509_value(s
->verified_chain
, 1);
4615 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4616 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4617 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4618 CT_POLICY_EVAL_CTX_set_time(
4619 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4621 scts
= SSL_get0_peer_scts(s
);
4624 * This function returns success (> 0) only when all the SCTs are valid, 0
4625 * when some are invalid, and < 0 on various internal errors (out of
4626 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4627 * reason to abort the handshake, that decision is up to the callback.
4628 * Therefore, we error out only in the unexpected case that the return
4629 * value is negative.
4631 * XXX: One might well argue that the return value of this function is an
4632 * unfortunate design choice. Its job is only to determine the validation
4633 * status of each of the provided SCTs. So long as it correctly separates
4634 * the wheat from the chaff it should return success. Failure in this case
4635 * ought to correspond to an inability to carry out its duties.
4637 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4638 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4642 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4644 ret
= 0; /* This function returns 0 on failure */
4647 CT_POLICY_EVAL_CTX_free(ctx
);
4649 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4650 * failure return code here. Also the application may wish the complete
4651 * the handshake, and then disconnect cleanly at a higher layer, after
4652 * checking the verification status of the completed connection.
4654 * We therefore force a certificate verification failure which will be
4655 * visible via SSL_get_verify_result() and cached as part of any resumed
4658 * Note: the permissive callback is for information gathering only, always
4659 * returns success, and does not affect verification status. Only the
4660 * strict callback or a custom application-specified callback can trigger
4661 * connection failure or record a verification error.
4664 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4668 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4670 switch (validation_mode
) {
4672 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4674 case SSL_CT_VALIDATION_PERMISSIVE
:
4675 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4676 case SSL_CT_VALIDATION_STRICT
:
4677 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4681 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4683 switch (validation_mode
) {
4685 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4687 case SSL_CT_VALIDATION_PERMISSIVE
:
4688 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4689 case SSL_CT_VALIDATION_STRICT
:
4690 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4694 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4696 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4699 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4701 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4704 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4706 CTLOG_STORE_free(ctx
->ctlog_store
);
4707 ctx
->ctlog_store
= logs
;
4710 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4712 return ctx
->ctlog_store
;
4715 #endif /* OPENSSL_NO_CT */
4717 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
4720 c
->client_hello_cb
= cb
;
4721 c
->client_hello_cb_arg
= arg
;
4724 int SSL_client_hello_isv2(SSL
*s
)
4726 if (s
->clienthello
== NULL
)
4728 return s
->clienthello
->isv2
;
4731 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
4733 if (s
->clienthello
== NULL
)
4735 return s
->clienthello
->legacy_version
;
4738 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
4740 if (s
->clienthello
== NULL
)
4743 *out
= s
->clienthello
->random
;
4744 return SSL3_RANDOM_SIZE
;
4747 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
4749 if (s
->clienthello
== NULL
)
4752 *out
= s
->clienthello
->session_id
;
4753 return s
->clienthello
->session_id_len
;
4756 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
4758 if (s
->clienthello
== NULL
)
4761 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4762 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4765 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4767 if (s
->clienthello
== NULL
)
4770 *out
= s
->clienthello
->compressions
;
4771 return s
->clienthello
->compressions_len
;
4774 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4780 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4782 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4783 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4787 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4788 if (present
== NULL
)
4790 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4791 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4793 if (ext
->received_order
>= num
)
4795 present
[ext
->received_order
] = ext
->type
;
4802 OPENSSL_free(present
);
4806 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4812 if (s
->clienthello
== NULL
)
4814 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4815 r
= s
->clienthello
->pre_proc_exts
+ i
;
4816 if (r
->present
&& r
->type
== type
) {
4818 *out
= PACKET_data(&r
->data
);
4820 *outlen
= PACKET_remaining(&r
->data
);
4827 int SSL_free_buffers(SSL
*ssl
)
4829 RECORD_LAYER
*rl
= &ssl
->rlayer
;
4831 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
4834 RECORD_LAYER_release(rl
);
4838 int SSL_alloc_buffers(SSL
*ssl
)
4840 return ssl3_setup_buffers(ssl
);
4843 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4845 ctx
->keylog_callback
= cb
;
4848 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4850 return ctx
->keylog_callback
;
4853 static int nss_keylog_int(const char *prefix
,
4855 const uint8_t *parameter_1
,
4856 size_t parameter_1_len
,
4857 const uint8_t *parameter_2
,
4858 size_t parameter_2_len
)
4861 char *cursor
= NULL
;
4866 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4869 * Our output buffer will contain the following strings, rendered with
4870 * space characters in between, terminated by a NULL character: first the
4871 * prefix, then the first parameter, then the second parameter. The
4872 * meaning of each parameter depends on the specific key material being
4873 * logged. Note that the first and second parameters are encoded in
4874 * hexadecimal, so we need a buffer that is twice their lengths.
4876 prefix_len
= strlen(prefix
);
4877 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4878 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4879 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4883 strcpy(cursor
, prefix
);
4884 cursor
+= prefix_len
;
4887 for (i
= 0; i
< parameter_1_len
; i
++) {
4888 sprintf(cursor
, "%02x", parameter_1
[i
]);
4893 for (i
= 0; i
< parameter_2_len
; i
++) {
4894 sprintf(cursor
, "%02x", parameter_2
[i
]);
4899 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4905 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4906 const uint8_t *encrypted_premaster
,
4907 size_t encrypted_premaster_len
,
4908 const uint8_t *premaster
,
4909 size_t premaster_len
)
4911 if (encrypted_premaster_len
< 8) {
4912 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4916 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4917 return nss_keylog_int("RSA",
4919 encrypted_premaster
,
4925 int ssl_log_secret(SSL
*ssl
,
4927 const uint8_t *secret
,
4930 return nss_keylog_int(label
,
4932 ssl
->s3
->client_random
,
4938 #define SSLV2_CIPHER_LEN 3
4940 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4945 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4947 if (PACKET_remaining(cipher_suites
) == 0) {
4948 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4949 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4953 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4954 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4955 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4956 *al
= SSL_AD_DECODE_ERROR
;
4960 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4961 s
->s3
->tmp
.ciphers_raw
= NULL
;
4962 s
->s3
->tmp
.ciphers_rawlen
= 0;
4965 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4966 PACKET sslv2ciphers
= *cipher_suites
;
4967 unsigned int leadbyte
;
4971 * We store the raw ciphers list in SSLv3+ format so we need to do some
4972 * preprocessing to convert the list first. If there are any SSLv2 only
4973 * ciphersuites with a non-zero leading byte then we are going to
4974 * slightly over allocate because we won't store those. But that isn't a
4977 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4978 s
->s3
->tmp
.ciphers_raw
= raw
;
4980 *al
= SSL_AD_INTERNAL_ERROR
;
4983 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4984 PACKET_remaining(&sslv2ciphers
) > 0;
4985 raw
+= TLS_CIPHER_LEN
) {
4986 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4988 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4991 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4992 *al
= SSL_AD_DECODE_ERROR
;
4993 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4994 s
->s3
->tmp
.ciphers_raw
= NULL
;
4995 s
->s3
->tmp
.ciphers_rawlen
= 0;
4999 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
5001 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
5002 &s
->s3
->tmp
.ciphers_rawlen
)) {
5003 *al
= SSL_AD_INTERNAL_ERROR
;
5011 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5012 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5013 STACK_OF(SSL_CIPHER
) **scsvs
)
5018 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5020 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
5023 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5024 STACK_OF(SSL_CIPHER
) **skp
,
5025 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5026 int sslv2format
, int *al
)
5028 const SSL_CIPHER
*c
;
5029 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5030 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5032 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5033 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5035 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5037 if (PACKET_remaining(cipher_suites
) == 0) {
5038 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5039 *al
= SSL_AD_ILLEGAL_PARAMETER
;
5043 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5044 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5045 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5046 *al
= SSL_AD_DECODE_ERROR
;
5050 sk
= sk_SSL_CIPHER_new_null();
5051 scsvs
= sk_SSL_CIPHER_new_null();
5052 if (sk
== NULL
|| scsvs
== NULL
) {
5053 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5054 *al
= SSL_AD_INTERNAL_ERROR
;
5058 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5060 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5061 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5062 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5064 if (sslv2format
&& cipher
[0] != '\0')
5067 /* For SSLv2-compat, ignore leading 0-byte. */
5068 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5070 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5071 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5072 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5073 *al
= SSL_AD_INTERNAL_ERROR
;
5078 if (PACKET_remaining(cipher_suites
) > 0) {
5079 *al
= SSL_AD_DECODE_ERROR
;
5080 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5087 sk_SSL_CIPHER_free(sk
);
5088 if (scsvs_out
!= NULL
)
5091 sk_SSL_CIPHER_free(scsvs
);
5094 sk_SSL_CIPHER_free(sk
);
5095 sk_SSL_CIPHER_free(scsvs
);
5099 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5101 ctx
->max_early_data
= max_early_data
;
5106 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5108 return ctx
->max_early_data
;
5111 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5113 s
->max_early_data
= max_early_data
;
5118 uint32_t SSL_get_max_early_data(const SSL
*s
)
5120 return s
->max_early_data
;
5123 int ssl_randbytes(SSL
*s
, unsigned char *rnd
, size_t size
)
5125 if (s
->drbg
!= NULL
)
5126 return RAND_DRBG_generate(s
->drbg
, rnd
, size
, 0, NULL
, 0);
5127 return RAND_bytes(rnd
, (int)size
);