2 * Copyright 1995-2016 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"
26 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
28 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
30 * evil casts, but these functions are only called if there's a library
33 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
34 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
35 ssl_undefined_function
,
36 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
37 ssl_undefined_function
,
38 (int (*)(SSL
*, int))ssl_undefined_function
,
39 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
40 ssl_undefined_function
,
41 NULL
, /* client_finished_label */
42 0, /* client_finished_label_len */
43 NULL
, /* server_finished_label */
44 0, /* server_finished_label_len */
45 (int (*)(int))ssl_undefined_function
,
46 (int (*)(SSL
*, unsigned char *, size_t, const char *,
47 size_t, const unsigned char *, size_t,
48 int use_context
))ssl_undefined_function
,
51 struct ssl_async_args
{
55 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
57 int (*func_read
) (SSL
*, void *, size_t, size_t *);
58 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
59 int (*func_other
) (SSL
*);
69 DANETLS_MATCHING_FULL
, 0, NID_undef
72 DANETLS_MATCHING_2256
, 1, NID_sha256
75 DANETLS_MATCHING_2512
, 2, NID_sha512
79 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
83 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
84 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
87 if (dctx
->mdevp
!= NULL
)
90 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
91 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
93 if (mdord
== NULL
|| mdevp
== NULL
) {
96 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
100 /* Install default entries */
101 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
104 if (dane_mds
[i
].nid
== NID_undef
||
105 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
107 mdevp
[dane_mds
[i
].mtype
] = md
;
108 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
118 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
120 OPENSSL_free(dctx
->mdevp
);
123 OPENSSL_free(dctx
->mdord
);
128 static void tlsa_free(danetls_record
*t
)
132 OPENSSL_free(t
->data
);
133 EVP_PKEY_free(t
->spki
);
137 static void dane_final(SSL_DANE
*dane
)
139 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
142 sk_X509_pop_free(dane
->certs
, X509_free
);
145 X509_free(dane
->mcert
);
153 * dane_copy - Copy dane configuration, sans verification state.
155 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
160 if (!DANETLS_ENABLED(&from
->dane
))
163 dane_final(&to
->dane
);
164 to
->dane
.flags
= from
->dane
.flags
;
165 to
->dane
.dctx
= &to
->ctx
->dane
;
166 to
->dane
.trecs
= sk_danetls_record_new_null();
168 if (to
->dane
.trecs
== NULL
) {
169 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
173 num
= sk_danetls_record_num(from
->dane
.trecs
);
174 for (i
= 0; i
< num
; ++i
) {
175 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
177 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
178 t
->data
, t
->dlen
) <= 0)
184 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
185 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
189 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
190 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
194 if (mtype
> dctx
->mdmax
) {
195 const EVP_MD
**mdevp
;
197 int n
= ((int)mtype
) + 1;
199 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
201 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
206 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
208 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
213 /* Zero-fill any gaps */
214 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
222 dctx
->mdevp
[mtype
] = md
;
223 /* Coerce ordinal of disabled matching types to 0 */
224 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
229 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
231 if (mtype
> dane
->dctx
->mdmax
)
233 return dane
->dctx
->mdevp
[mtype
];
236 static int dane_tlsa_add(SSL_DANE
*dane
,
239 uint8_t mtype
, unsigned char *data
, size_t dlen
)
242 const EVP_MD
*md
= NULL
;
243 int ilen
= (int)dlen
;
247 if (dane
->trecs
== NULL
) {
248 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
252 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
253 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
257 if (usage
> DANETLS_USAGE_LAST
) {
258 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
262 if (selector
> DANETLS_SELECTOR_LAST
) {
263 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
267 if (mtype
!= DANETLS_MATCHING_FULL
) {
268 md
= tlsa_md_get(dane
, mtype
);
270 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
275 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
276 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
280 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
284 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
285 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
290 t
->selector
= selector
;
292 t
->data
= OPENSSL_malloc(dlen
);
293 if (t
->data
== NULL
) {
295 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
298 memcpy(t
->data
, data
, dlen
);
301 /* Validate and cache full certificate or public key */
302 if (mtype
== DANETLS_MATCHING_FULL
) {
303 const unsigned char *p
= data
;
305 EVP_PKEY
*pkey
= NULL
;
308 case DANETLS_SELECTOR_CERT
:
309 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
310 dlen
!= (size_t)(p
- data
)) {
312 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
315 if (X509_get0_pubkey(cert
) == NULL
) {
317 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
321 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
327 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
328 * records that contain full certificates of trust-anchors that are
329 * not present in the wire chain. For usage PKIX-TA(0), we augment
330 * the chain with untrusted Full(0) certificates from DNS, in case
331 * they are missing from the chain.
333 if ((dane
->certs
== NULL
&&
334 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
335 !sk_X509_push(dane
->certs
, cert
)) {
336 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
343 case DANETLS_SELECTOR_SPKI
:
344 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
345 dlen
!= (size_t)(p
- data
)) {
347 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
352 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
353 * records that contain full bare keys of trust-anchors that are
354 * not present in the wire chain.
356 if (usage
== DANETLS_USAGE_DANE_TA
)
365 * Find the right insertion point for the new record.
367 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
368 * they can be processed first, as they require no chain building, and no
369 * expiration or hostname checks. Because DANE-EE(3) is numerically
370 * largest, this is accomplished via descending sort by "usage".
372 * We also sort in descending order by matching ordinal to simplify
373 * the implementation of digest agility in the verification code.
375 * The choice of order for the selector is not significant, so we
376 * use the same descending order for consistency.
378 num
= sk_danetls_record_num(dane
->trecs
);
379 for (i
= 0; i
< num
; ++i
) {
380 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
382 if (rec
->usage
> usage
)
384 if (rec
->usage
< usage
)
386 if (rec
->selector
> selector
)
388 if (rec
->selector
< selector
)
390 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
395 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
397 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
400 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
406 * Return 0 if there is only one version configured and it was disabled
407 * at configure time. Return 1 otherwise.
409 static int ssl_check_allowed_versions(int min_version
, int max_version
)
411 int minisdtls
= 0, maxisdtls
= 0;
413 /* Figure out if we're doing DTLS versions or TLS versions */
414 if (min_version
== DTLS1_BAD_VER
415 || min_version
>> 8 == DTLS1_VERSION_MAJOR
)
417 if (max_version
== DTLS1_BAD_VER
418 || max_version
>> 8 == DTLS1_VERSION_MAJOR
)
420 /* A wildcard version of 0 could be DTLS or TLS. */
421 if ((minisdtls
&& !maxisdtls
&& max_version
!= 0)
422 || (maxisdtls
&& !minisdtls
&& min_version
!= 0)) {
423 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
427 if (minisdtls
|| maxisdtls
) {
428 /* Do DTLS version checks. */
429 if (min_version
== 0)
430 /* Ignore DTLS1_BAD_VER */
431 min_version
= DTLS1_VERSION
;
432 if (max_version
== 0)
433 max_version
= DTLS1_2_VERSION
;
434 #ifdef OPENSSL_NO_DTLS1_2
435 if (max_version
== DTLS1_2_VERSION
)
436 max_version
= DTLS1_VERSION
;
438 #ifdef OPENSSL_NO_DTLS1
439 if (min_version
== DTLS1_VERSION
)
440 min_version
= DTLS1_2_VERSION
;
442 /* Done massaging versions; do the check. */
444 #ifdef OPENSSL_NO_DTLS1
445 || (DTLS_VERSION_GE(min_version
, DTLS1_VERSION
)
446 && DTLS_VERSION_GE(DTLS1_VERSION
, max_version
))
448 #ifdef OPENSSL_NO_DTLS1_2
449 || (DTLS_VERSION_GE(min_version
, DTLS1_2_VERSION
)
450 && DTLS_VERSION_GE(DTLS1_2_VERSION
, max_version
))
455 /* Regular TLS version checks. */
456 if (min_version
== 0)
457 min_version
= SSL3_VERSION
;
458 if (max_version
== 0)
459 max_version
= TLS1_3_VERSION
;
460 #ifdef OPENSSL_NO_TLS1_3
461 if (max_version
== TLS1_3_VERSION
)
462 max_version
= TLS1_2_VERSION
;
464 #ifdef OPENSSL_NO_TLS1_2
465 if (max_version
== TLS1_2_VERSION
)
466 max_version
= TLS1_1_VERSION
;
468 #ifdef OPENSSL_NO_TLS1_1
469 if (max_version
== TLS1_1_VERSION
)
470 max_version
= TLS1_VERSION
;
472 #ifdef OPENSSL_NO_TLS1
473 if (max_version
== TLS1_VERSION
)
474 max_version
= SSL3_VERSION
;
476 #ifdef OPENSSL_NO_SSL3
477 if (min_version
== SSL3_VERSION
)
478 min_version
= TLS1_VERSION
;
480 #ifdef OPENSSL_NO_TLS1
481 if (min_version
== TLS1_VERSION
)
482 min_version
= TLS1_1_VERSION
;
484 #ifdef OPENSSL_NO_TLS1_1
485 if (min_version
== TLS1_1_VERSION
)
486 min_version
= TLS1_2_VERSION
;
488 #ifdef OPENSSL_NO_TLS1_2
489 if (min_version
== TLS1_2_VERSION
)
490 min_version
= TLS1_3_VERSION
;
492 /* Done massaging versions; do the check. */
494 #ifdef OPENSSL_NO_SSL3
495 || (min_version
<= SSL3_VERSION
&& SSL3_VERSION
<= max_version
)
497 #ifdef OPENSSL_NO_TLS1
498 || (min_version
<= TLS1_VERSION
&& TLS1_VERSION
<= max_version
)
500 #ifdef OPENSSL_NO_TLS1_1
501 || (min_version
<= TLS1_1_VERSION
&& TLS1_1_VERSION
<= max_version
)
503 #ifdef OPENSSL_NO_TLS1_2
504 || (min_version
<= TLS1_2_VERSION
&& TLS1_2_VERSION
<= max_version
)
506 #ifdef OPENSSL_NO_TLS1_3
507 || (min_version
<= TLS1_3_VERSION
&& TLS1_3_VERSION
<= max_version
)
515 static void clear_ciphers(SSL
*s
)
517 /* clear the current cipher */
518 ssl_clear_cipher_ctx(s
);
519 ssl_clear_hash_ctx(&s
->read_hash
);
520 ssl_clear_hash_ctx(&s
->write_hash
);
523 int SSL_clear(SSL
*s
)
525 if (s
->method
== NULL
) {
526 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
530 if (ssl_clear_bad_session(s
)) {
531 SSL_SESSION_free(s
->session
);
534 SSL_SESSION_free(s
->psksession
);
535 s
->psksession
= NULL
;
541 if (s
->renegotiate
) {
542 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
546 ossl_statem_clear(s
);
548 s
->version
= s
->method
->version
;
549 s
->client_version
= s
->version
;
550 s
->rwstate
= SSL_NOTHING
;
552 BUF_MEM_free(s
->init_buf
);
557 s
->key_update
= SSL_KEY_UPDATE_NONE
;
559 /* Reset DANE verification result state */
562 X509_free(s
->dane
.mcert
);
563 s
->dane
.mcert
= NULL
;
564 s
->dane
.mtlsa
= NULL
;
566 /* Clear the verification result peername */
567 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
570 * Check to see if we were changed into a different method, if so, revert
573 if (s
->method
!= s
->ctx
->method
) {
574 s
->method
->ssl_free(s
);
575 s
->method
= s
->ctx
->method
;
576 if (!s
->method
->ssl_new(s
))
579 if (!s
->method
->ssl_clear(s
))
583 RECORD_LAYER_clear(&s
->rlayer
);
588 /** Used to change an SSL_CTXs default SSL method type */
589 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
591 STACK_OF(SSL_CIPHER
) *sk
;
595 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
596 &(ctx
->cipher_list_by_id
),
597 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
598 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
599 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
605 SSL
*SSL_new(SSL_CTX
*ctx
)
610 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
613 if (ctx
->method
== NULL
) {
614 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
618 s
= OPENSSL_zalloc(sizeof(*s
));
622 s
->lock
= CRYPTO_THREAD_lock_new();
627 * If not using the standard RAND (say for fuzzing), then don't use a
630 if (RAND_get_rand_method() == RAND_OpenSSL()) {
631 s
->drbg
= RAND_DRBG_new(NID_aes_128_ctr
, RAND_DRBG_FLAG_CTR_USE_DF
,
632 RAND_DRBG_get0_global());
634 || RAND_DRBG_instantiate(s
->drbg
, NULL
, 0) == 0) {
635 CRYPTO_THREAD_lock_free(s
->lock
);
640 RECORD_LAYER_init(&s
->rlayer
, s
);
642 s
->options
= ctx
->options
;
643 s
->dane
.flags
= ctx
->dane
.flags
;
644 s
->min_proto_version
= ctx
->min_proto_version
;
645 s
->max_proto_version
= ctx
->max_proto_version
;
647 s
->max_cert_list
= ctx
->max_cert_list
;
649 s
->max_early_data
= ctx
->max_early_data
;
652 * Earlier library versions used to copy the pointer to the CERT, not
653 * its contents; only when setting new parameters for the per-SSL
654 * copy, ssl_cert_new would be called (and the direct reference to
655 * the per-SSL_CTX settings would be lost, but those still were
656 * indirectly accessed for various purposes, and for that reason they
657 * used to be known as s->ctx->default_cert). Now we don't look at the
658 * SSL_CTX's CERT after having duplicated it once.
660 s
->cert
= ssl_cert_dup(ctx
->cert
);
664 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
665 s
->msg_callback
= ctx
->msg_callback
;
666 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
667 s
->verify_mode
= ctx
->verify_mode
;
668 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
669 s
->record_padding_cb
= ctx
->record_padding_cb
;
670 s
->record_padding_arg
= ctx
->record_padding_arg
;
671 s
->block_padding
= ctx
->block_padding
;
672 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
673 if (!ossl_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
))
675 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
676 s
->verify_callback
= ctx
->default_verify_callback
;
677 s
->generate_session_id
= ctx
->generate_session_id
;
679 s
->param
= X509_VERIFY_PARAM_new();
680 if (s
->param
== NULL
)
682 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
683 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
684 s
->max_send_fragment
= ctx
->max_send_fragment
;
685 s
->split_send_fragment
= ctx
->split_send_fragment
;
686 s
->max_pipelines
= ctx
->max_pipelines
;
687 if (s
->max_pipelines
> 1)
688 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
689 if (ctx
->default_read_buf_len
> 0)
690 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
695 s
->ext
.debug_arg
= NULL
;
696 s
->ext
.ticket_expected
= 0;
697 s
->ext
.status_type
= ctx
->ext
.status_type
;
698 s
->ext
.status_expected
= 0;
699 s
->ext
.ocsp
.ids
= NULL
;
700 s
->ext
.ocsp
.exts
= NULL
;
701 s
->ext
.ocsp
.resp
= NULL
;
702 s
->ext
.ocsp
.resp_len
= 0;
704 s
->session_ctx
= ctx
;
705 #ifndef OPENSSL_NO_EC
706 if (ctx
->ext
.ecpointformats
) {
707 s
->ext
.ecpointformats
=
708 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
709 ctx
->ext
.ecpointformats_len
);
710 if (!s
->ext
.ecpointformats
)
712 s
->ext
.ecpointformats_len
=
713 ctx
->ext
.ecpointformats_len
;
715 if (ctx
->ext
.supportedgroups
) {
716 s
->ext
.supportedgroups
=
717 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
718 ctx
->ext
.supportedgroups_len
);
719 if (!s
->ext
.supportedgroups
)
721 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
724 #ifndef OPENSSL_NO_NEXTPROTONEG
728 if (s
->ctx
->ext
.alpn
) {
729 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
730 if (s
->ext
.alpn
== NULL
)
732 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
733 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
736 s
->verified_chain
= NULL
;
737 s
->verify_result
= X509_V_OK
;
739 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
740 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
742 s
->method
= ctx
->method
;
744 s
->key_update
= SSL_KEY_UPDATE_NONE
;
746 if (!s
->method
->ssl_new(s
))
749 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
754 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
757 #ifndef OPENSSL_NO_PSK
758 s
->psk_client_callback
= ctx
->psk_client_callback
;
759 s
->psk_server_callback
= ctx
->psk_server_callback
;
761 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
762 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
766 #ifndef OPENSSL_NO_CT
767 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
768 ctx
->ct_validation_callback_arg
))
775 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
779 int SSL_is_dtls(const SSL
*s
)
781 return SSL_IS_DTLS(s
) ? 1 : 0;
784 int SSL_up_ref(SSL
*s
)
788 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
791 REF_PRINT_COUNT("SSL", s
);
792 REF_ASSERT_ISNT(i
< 2);
793 return ((i
> 1) ? 1 : 0);
796 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
797 unsigned int sid_ctx_len
)
799 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
800 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
801 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
804 ctx
->sid_ctx_length
= sid_ctx_len
;
805 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
810 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
811 unsigned int sid_ctx_len
)
813 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
814 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
815 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
818 ssl
->sid_ctx_length
= sid_ctx_len
;
819 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
824 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
826 CRYPTO_THREAD_write_lock(ctx
->lock
);
827 ctx
->generate_session_id
= cb
;
828 CRYPTO_THREAD_unlock(ctx
->lock
);
832 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
834 CRYPTO_THREAD_write_lock(ssl
->lock
);
835 ssl
->generate_session_id
= cb
;
836 CRYPTO_THREAD_unlock(ssl
->lock
);
840 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
844 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
845 * we can "construct" a session to give us the desired check - i.e. to
846 * find if there's a session in the hash table that would conflict with
847 * any new session built out of this id/id_len and the ssl_version in use
852 if (id_len
> sizeof r
.session_id
)
855 r
.ssl_version
= ssl
->version
;
856 r
.session_id_length
= id_len
;
857 memcpy(r
.session_id
, id
, id_len
);
859 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
860 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
861 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
865 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
867 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
870 int SSL_set_purpose(SSL
*s
, int purpose
)
872 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
875 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
877 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
880 int SSL_set_trust(SSL
*s
, int trust
)
882 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
885 int SSL_set1_host(SSL
*s
, const char *hostname
)
887 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
890 int SSL_add1_host(SSL
*s
, const char *hostname
)
892 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
895 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
897 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
900 const char *SSL_get0_peername(SSL
*s
)
902 return X509_VERIFY_PARAM_get0_peername(s
->param
);
905 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
907 return dane_ctx_enable(&ctx
->dane
);
910 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
912 unsigned long orig
= ctx
->dane
.flags
;
914 ctx
->dane
.flags
|= flags
;
918 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
920 unsigned long orig
= ctx
->dane
.flags
;
922 ctx
->dane
.flags
&= ~flags
;
926 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
928 SSL_DANE
*dane
= &s
->dane
;
930 if (s
->ctx
->dane
.mdmax
== 0) {
931 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
934 if (dane
->trecs
!= NULL
) {
935 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
940 * Default SNI name. This rejects empty names, while set1_host below
941 * accepts them and disables host name checks. To avoid side-effects with
942 * invalid input, set the SNI name first.
944 if (s
->ext
.hostname
== NULL
) {
945 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
946 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
951 /* Primary RFC6125 reference identifier */
952 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
953 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
959 dane
->dctx
= &s
->ctx
->dane
;
960 dane
->trecs
= sk_danetls_record_new_null();
962 if (dane
->trecs
== NULL
) {
963 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
969 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
971 unsigned long orig
= ssl
->dane
.flags
;
973 ssl
->dane
.flags
|= flags
;
977 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
979 unsigned long orig
= ssl
->dane
.flags
;
981 ssl
->dane
.flags
&= ~flags
;
985 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
987 SSL_DANE
*dane
= &s
->dane
;
989 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
993 *mcert
= dane
->mcert
;
995 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1000 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1001 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1003 SSL_DANE
*dane
= &s
->dane
;
1005 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1009 *usage
= dane
->mtlsa
->usage
;
1011 *selector
= dane
->mtlsa
->selector
;
1013 *mtype
= dane
->mtlsa
->mtype
;
1015 *data
= dane
->mtlsa
->data
;
1017 *dlen
= dane
->mtlsa
->dlen
;
1022 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1027 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1028 uint8_t mtype
, unsigned char *data
, size_t dlen
)
1030 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1033 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1036 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1039 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1041 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1044 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1046 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1049 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1054 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1059 void SSL_certs_clear(SSL
*s
)
1061 ssl_cert_clear_certs(s
->cert
);
1064 void SSL_free(SSL
*s
)
1071 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1072 REF_PRINT_COUNT("SSL", s
);
1075 REF_ASSERT_ISNT(i
< 0);
1077 X509_VERIFY_PARAM_free(s
->param
);
1078 dane_final(&s
->dane
);
1079 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1081 /* Ignore return value */
1082 ssl_free_wbio_buffer(s
);
1084 BIO_free_all(s
->wbio
);
1085 BIO_free_all(s
->rbio
);
1087 BUF_MEM_free(s
->init_buf
);
1089 /* add extra stuff */
1090 sk_SSL_CIPHER_free(s
->cipher_list
);
1091 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1093 /* Make the next call work :-) */
1094 if (s
->session
!= NULL
) {
1095 ssl_clear_bad_session(s
);
1096 SSL_SESSION_free(s
->session
);
1098 SSL_SESSION_free(s
->psksession
);
1102 ssl_cert_free(s
->cert
);
1103 /* Free up if allocated */
1105 OPENSSL_free(s
->ext
.hostname
);
1106 SSL_CTX_free(s
->session_ctx
);
1107 #ifndef OPENSSL_NO_EC
1108 OPENSSL_free(s
->ext
.ecpointformats
);
1109 OPENSSL_free(s
->ext
.supportedgroups
);
1110 #endif /* OPENSSL_NO_EC */
1111 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1112 #ifndef OPENSSL_NO_OCSP
1113 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1115 #ifndef OPENSSL_NO_CT
1116 SCT_LIST_free(s
->scts
);
1117 OPENSSL_free(s
->ext
.scts
);
1119 OPENSSL_free(s
->ext
.ocsp
.resp
);
1120 OPENSSL_free(s
->ext
.alpn
);
1121 OPENSSL_free(s
->ext
.tls13_cookie
);
1122 OPENSSL_free(s
->clienthello
);
1124 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1126 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1128 if (s
->method
!= NULL
)
1129 s
->method
->ssl_free(s
);
1131 RECORD_LAYER_release(&s
->rlayer
);
1133 SSL_CTX_free(s
->ctx
);
1135 ASYNC_WAIT_CTX_free(s
->waitctx
);
1137 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1138 OPENSSL_free(s
->ext
.npn
);
1141 #ifndef OPENSSL_NO_SRTP
1142 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1145 RAND_DRBG_free(s
->drbg
);
1146 CRYPTO_THREAD_lock_free(s
->lock
);
1151 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1153 BIO_free_all(s
->rbio
);
1157 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1160 * If the output buffering BIO is still in place, remove it
1162 if (s
->bbio
!= NULL
)
1163 s
->wbio
= BIO_pop(s
->wbio
);
1165 BIO_free_all(s
->wbio
);
1168 /* Re-attach |bbio| to the new |wbio|. */
1169 if (s
->bbio
!= NULL
)
1170 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1173 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1176 * For historical reasons, this function has many different cases in
1177 * ownership handling.
1180 /* If nothing has changed, do nothing */
1181 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1185 * If the two arguments are equal then one fewer reference is granted by the
1186 * caller than we want to take
1188 if (rbio
!= NULL
&& rbio
== wbio
)
1192 * If only the wbio is changed only adopt one reference.
1194 if (rbio
== SSL_get_rbio(s
)) {
1195 SSL_set0_wbio(s
, wbio
);
1199 * There is an asymmetry here for historical reasons. If only the rbio is
1200 * changed AND the rbio and wbio were originally different, then we only
1201 * adopt one reference.
1203 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1204 SSL_set0_rbio(s
, rbio
);
1208 /* Otherwise, adopt both references. */
1209 SSL_set0_rbio(s
, rbio
);
1210 SSL_set0_wbio(s
, wbio
);
1213 BIO
*SSL_get_rbio(const SSL
*s
)
1218 BIO
*SSL_get_wbio(const SSL
*s
)
1220 if (s
->bbio
!= NULL
) {
1222 * If |bbio| is active, the true caller-configured BIO is its
1225 return BIO_next(s
->bbio
);
1230 int SSL_get_fd(const SSL
*s
)
1232 return SSL_get_rfd(s
);
1235 int SSL_get_rfd(const SSL
*s
)
1240 b
= SSL_get_rbio(s
);
1241 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1243 BIO_get_fd(r
, &ret
);
1247 int SSL_get_wfd(const SSL
*s
)
1252 b
= SSL_get_wbio(s
);
1253 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1255 BIO_get_fd(r
, &ret
);
1259 #ifndef OPENSSL_NO_SOCK
1260 int SSL_set_fd(SSL
*s
, int fd
)
1265 bio
= BIO_new(BIO_s_socket());
1268 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1271 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1272 SSL_set_bio(s
, bio
, bio
);
1278 int SSL_set_wfd(SSL
*s
, int fd
)
1280 BIO
*rbio
= SSL_get_rbio(s
);
1282 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1283 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1284 BIO
*bio
= BIO_new(BIO_s_socket());
1287 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1290 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1291 SSL_set0_wbio(s
, bio
);
1294 SSL_set0_wbio(s
, rbio
);
1299 int SSL_set_rfd(SSL
*s
, int fd
)
1301 BIO
*wbio
= SSL_get_wbio(s
);
1303 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1304 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1305 BIO
*bio
= BIO_new(BIO_s_socket());
1308 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1311 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1312 SSL_set0_rbio(s
, bio
);
1315 SSL_set0_rbio(s
, wbio
);
1322 /* return length of latest Finished message we sent, copy to 'buf' */
1323 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1327 if (s
->s3
!= NULL
) {
1328 ret
= s
->s3
->tmp
.finish_md_len
;
1331 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1336 /* return length of latest Finished message we expected, copy to 'buf' */
1337 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1341 if (s
->s3
!= NULL
) {
1342 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1345 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1350 int SSL_get_verify_mode(const SSL
*s
)
1352 return (s
->verify_mode
);
1355 int SSL_get_verify_depth(const SSL
*s
)
1357 return X509_VERIFY_PARAM_get_depth(s
->param
);
1360 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1361 return (s
->verify_callback
);
1364 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1366 return (ctx
->verify_mode
);
1369 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1371 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1374 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1375 return (ctx
->default_verify_callback
);
1378 void SSL_set_verify(SSL
*s
, int mode
,
1379 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1381 s
->verify_mode
= mode
;
1382 if (callback
!= NULL
)
1383 s
->verify_callback
= callback
;
1386 void SSL_set_verify_depth(SSL
*s
, int depth
)
1388 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1391 void SSL_set_read_ahead(SSL
*s
, int yes
)
1393 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1396 int SSL_get_read_ahead(const SSL
*s
)
1398 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1401 int SSL_pending(const SSL
*s
)
1403 size_t pending
= s
->method
->ssl_pending(s
);
1406 * SSL_pending cannot work properly if read-ahead is enabled
1407 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1408 * impossible to fix since SSL_pending cannot report errors that may be
1409 * observed while scanning the new data. (Note that SSL_pending() is
1410 * often used as a boolean value, so we'd better not return -1.)
1412 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1413 * we just return INT_MAX.
1415 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1418 int SSL_has_pending(const SSL
*s
)
1421 * Similar to SSL_pending() but returns a 1 to indicate that we have
1422 * unprocessed data available or 0 otherwise (as opposed to the number of
1423 * bytes available). Unlike SSL_pending() this will take into account
1424 * read_ahead data. A 1 return simply indicates that we have unprocessed
1425 * data. That data may not result in any application data, or we may fail
1426 * to parse the records for some reason.
1428 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1431 return RECORD_LAYER_read_pending(&s
->rlayer
);
1434 X509
*SSL_get_peer_certificate(const SSL
*s
)
1438 if ((s
== NULL
) || (s
->session
== NULL
))
1441 r
= s
->session
->peer
;
1451 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1455 if ((s
== NULL
) || (s
->session
== NULL
))
1458 r
= s
->session
->peer_chain
;
1461 * If we are a client, cert_chain includes the peer's own certificate; if
1462 * we are a server, it does not.
1469 * Now in theory, since the calling process own 't' it should be safe to
1470 * modify. We need to be able to read f without being hassled
1472 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1475 /* Do we need to to SSL locking? */
1476 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1481 * what if we are setup for one protocol version but want to talk another
1483 if (t
->method
!= f
->method
) {
1484 t
->method
->ssl_free(t
);
1485 t
->method
= f
->method
;
1486 if (t
->method
->ssl_new(t
) == 0)
1490 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1491 ssl_cert_free(t
->cert
);
1493 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1500 /* Fix this so it checks all the valid key/cert options */
1501 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1503 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1504 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1507 if (ctx
->cert
->key
->privatekey
== NULL
) {
1508 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1511 return (X509_check_private_key
1512 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1515 /* Fix this function so that it takes an optional type parameter */
1516 int SSL_check_private_key(const SSL
*ssl
)
1519 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1522 if (ssl
->cert
->key
->x509
== NULL
) {
1523 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1526 if (ssl
->cert
->key
->privatekey
== NULL
) {
1527 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1530 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1531 ssl
->cert
->key
->privatekey
));
1534 int SSL_waiting_for_async(SSL
*s
)
1542 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1544 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1548 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1551 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1552 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1554 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1558 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1562 int SSL_accept(SSL
*s
)
1564 if (s
->handshake_func
== NULL
) {
1565 /* Not properly initialized yet */
1566 SSL_set_accept_state(s
);
1569 return SSL_do_handshake(s
);
1572 int SSL_connect(SSL
*s
)
1574 if (s
->handshake_func
== NULL
) {
1575 /* Not properly initialized yet */
1576 SSL_set_connect_state(s
);
1579 return SSL_do_handshake(s
);
1582 long SSL_get_default_timeout(const SSL
*s
)
1584 return (s
->method
->get_timeout());
1587 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1588 int (*func
) (void *))
1591 if (s
->waitctx
== NULL
) {
1592 s
->waitctx
= ASYNC_WAIT_CTX_new();
1593 if (s
->waitctx
== NULL
)
1596 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1597 sizeof(struct ssl_async_args
))) {
1599 s
->rwstate
= SSL_NOTHING
;
1600 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1603 s
->rwstate
= SSL_ASYNC_PAUSED
;
1606 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1612 s
->rwstate
= SSL_NOTHING
;
1613 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1614 /* Shouldn't happen */
1619 static int ssl_io_intern(void *vargs
)
1621 struct ssl_async_args
*args
;
1626 args
= (struct ssl_async_args
*)vargs
;
1630 switch (args
->type
) {
1632 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1634 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1636 return args
->f
.func_other(s
);
1641 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1643 if (s
->handshake_func
== NULL
) {
1644 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1648 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1649 s
->rwstate
= SSL_NOTHING
;
1653 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1654 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1655 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1659 * If we are a client and haven't received the ServerHello etc then we
1662 ossl_statem_check_finish_init(s
, 0);
1664 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1665 struct ssl_async_args args
;
1671 args
.type
= READFUNC
;
1672 args
.f
.func_read
= s
->method
->ssl_read
;
1674 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1675 *readbytes
= s
->asyncrw
;
1678 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1682 int SSL_read(SSL
*s
, void *buf
, int num
)
1688 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1692 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1695 * The cast is safe here because ret should be <= INT_MAX because num is
1699 ret
= (int)readbytes
;
1704 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1706 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1713 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1718 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1719 return SSL_READ_EARLY_DATA_ERROR
;
1722 switch (s
->early_data_state
) {
1723 case SSL_EARLY_DATA_NONE
:
1724 if (!SSL_in_before(s
)) {
1725 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1726 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1727 return SSL_READ_EARLY_DATA_ERROR
;
1731 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1732 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1733 ret
= SSL_accept(s
);
1736 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1737 return SSL_READ_EARLY_DATA_ERROR
;
1741 case SSL_EARLY_DATA_READ_RETRY
:
1742 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1743 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1744 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1746 * State machine will update early_data_state to
1747 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1750 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1751 != SSL_EARLY_DATA_FINISHED_READING
)) {
1752 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1753 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1754 : SSL_READ_EARLY_DATA_ERROR
;
1757 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1760 return SSL_READ_EARLY_DATA_FINISH
;
1763 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1764 return SSL_READ_EARLY_DATA_ERROR
;
1768 int SSL_get_early_data_status(const SSL
*s
)
1770 return s
->ext
.early_data
;
1773 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1775 if (s
->handshake_func
== NULL
) {
1776 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1780 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1783 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1784 struct ssl_async_args args
;
1790 args
.type
= READFUNC
;
1791 args
.f
.func_read
= s
->method
->ssl_peek
;
1793 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1794 *readbytes
= s
->asyncrw
;
1797 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1801 int SSL_peek(SSL
*s
, void *buf
, int num
)
1807 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1811 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1814 * The cast is safe here because ret should be <= INT_MAX because num is
1818 ret
= (int)readbytes
;
1824 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1826 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1833 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1835 if (s
->handshake_func
== NULL
) {
1836 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1840 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1841 s
->rwstate
= SSL_NOTHING
;
1842 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1846 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1847 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1848 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1849 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1852 /* If we are a client and haven't sent the Finished we better do that */
1853 ossl_statem_check_finish_init(s
, 1);
1855 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1857 struct ssl_async_args args
;
1860 args
.buf
= (void *)buf
;
1862 args
.type
= WRITEFUNC
;
1863 args
.f
.func_write
= s
->method
->ssl_write
;
1865 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1866 *written
= s
->asyncrw
;
1869 return s
->method
->ssl_write(s
, buf
, num
, written
);
1873 int SSL_write(SSL
*s
, const void *buf
, int num
)
1879 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1883 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1886 * The cast is safe here because ret should be <= INT_MAX because num is
1895 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1897 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1904 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1906 int ret
, early_data_state
;
1908 switch (s
->early_data_state
) {
1909 case SSL_EARLY_DATA_NONE
:
1911 || !SSL_in_before(s
)
1912 || s
->session
== NULL
1913 || s
->session
->ext
.max_early_data
== 0) {
1914 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1915 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1920 case SSL_EARLY_DATA_CONNECT_RETRY
:
1921 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1922 ret
= SSL_connect(s
);
1925 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1930 case SSL_EARLY_DATA_WRITE_RETRY
:
1931 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1932 ret
= SSL_write_ex(s
, buf
, num
, written
);
1933 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1936 case SSL_EARLY_DATA_FINISHED_READING
:
1937 case SSL_EARLY_DATA_READ_RETRY
:
1938 early_data_state
= s
->early_data_state
;
1939 /* We are a server writing to an unauthenticated client */
1940 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1941 ret
= SSL_write_ex(s
, buf
, num
, written
);
1942 s
->early_data_state
= early_data_state
;
1946 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1951 int SSL_shutdown(SSL
*s
)
1954 * Note that this function behaves differently from what one might
1955 * expect. Return values are 0 for no success (yet), 1 for success; but
1956 * calling it once is usually not enough, even if blocking I/O is used
1957 * (see ssl3_shutdown).
1960 if (s
->handshake_func
== NULL
) {
1961 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1965 if (!SSL_in_init(s
)) {
1966 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1967 struct ssl_async_args args
;
1970 args
.type
= OTHERFUNC
;
1971 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1973 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1975 return s
->method
->ssl_shutdown(s
);
1978 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1983 int SSL_key_update(SSL
*s
, int updatetype
)
1986 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1987 * negotiated, and that it is appropriate to call SSL_key_update() instead
1988 * of SSL_renegotiate().
1990 if (!SSL_IS_TLS13(s
)) {
1991 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
1995 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
1996 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
1997 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2001 if (!SSL_is_init_finished(s
)) {
2002 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2006 ossl_statem_set_in_init(s
, 1);
2007 s
->key_update
= updatetype
;
2011 int SSL_get_key_update_type(SSL
*s
)
2013 return s
->key_update
;
2016 int SSL_renegotiate(SSL
*s
)
2018 if (SSL_IS_TLS13(s
)) {
2019 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2023 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2024 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2031 return (s
->method
->ssl_renegotiate(s
));
2034 int SSL_renegotiate_abbreviated(SSL
*s
)
2036 if (SSL_IS_TLS13(s
)) {
2037 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2041 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2042 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2049 return (s
->method
->ssl_renegotiate(s
));
2052 int SSL_renegotiate_pending(SSL
*s
)
2055 * becomes true when negotiation is requested; false again once a
2056 * handshake has finished
2058 return (s
->renegotiate
!= 0);
2061 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2066 case SSL_CTRL_GET_READ_AHEAD
:
2067 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
2068 case SSL_CTRL_SET_READ_AHEAD
:
2069 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2070 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2073 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2074 s
->msg_callback_arg
= parg
;
2078 return (s
->mode
|= larg
);
2079 case SSL_CTRL_CLEAR_MODE
:
2080 return (s
->mode
&= ~larg
);
2081 case SSL_CTRL_GET_MAX_CERT_LIST
:
2082 return (long)(s
->max_cert_list
);
2083 case SSL_CTRL_SET_MAX_CERT_LIST
:
2086 l
= (long)s
->max_cert_list
;
2087 s
->max_cert_list
= (size_t)larg
;
2089 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2090 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2092 s
->max_send_fragment
= larg
;
2093 if (s
->max_send_fragment
< s
->split_send_fragment
)
2094 s
->split_send_fragment
= s
->max_send_fragment
;
2096 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2097 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2099 s
->split_send_fragment
= larg
;
2101 case SSL_CTRL_SET_MAX_PIPELINES
:
2102 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2104 s
->max_pipelines
= larg
;
2106 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2108 case SSL_CTRL_GET_RI_SUPPORT
:
2110 return s
->s3
->send_connection_binding
;
2113 case SSL_CTRL_CERT_FLAGS
:
2114 return (s
->cert
->cert_flags
|= larg
);
2115 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2116 return (s
->cert
->cert_flags
&= ~larg
);
2118 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2120 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2122 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2123 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2125 return TLS_CIPHER_LEN
;
2127 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2128 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2130 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2134 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2135 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2136 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2137 &s
->min_proto_version
);
2138 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2139 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2140 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2141 &s
->max_proto_version
);
2143 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2147 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2150 case SSL_CTRL_SET_MSG_CALLBACK
:
2151 s
->msg_callback
= (void (*)
2152 (int write_p
, int version
, int content_type
,
2153 const void *buf
, size_t len
, SSL
*ssl
,
2158 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2162 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2164 return ctx
->sessions
;
2167 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2170 /* For some cases with ctx == NULL perform syntax checks */
2173 #ifndef OPENSSL_NO_EC
2174 case SSL_CTRL_SET_GROUPS_LIST
:
2175 return tls1_set_groups_list(NULL
, NULL
, parg
);
2177 case SSL_CTRL_SET_SIGALGS_LIST
:
2178 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2179 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2186 case SSL_CTRL_GET_READ_AHEAD
:
2187 return (ctx
->read_ahead
);
2188 case SSL_CTRL_SET_READ_AHEAD
:
2189 l
= ctx
->read_ahead
;
2190 ctx
->read_ahead
= larg
;
2193 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2194 ctx
->msg_callback_arg
= parg
;
2197 case SSL_CTRL_GET_MAX_CERT_LIST
:
2198 return (long)(ctx
->max_cert_list
);
2199 case SSL_CTRL_SET_MAX_CERT_LIST
:
2202 l
= (long)ctx
->max_cert_list
;
2203 ctx
->max_cert_list
= (size_t)larg
;
2206 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2209 l
= (long)ctx
->session_cache_size
;
2210 ctx
->session_cache_size
= (size_t)larg
;
2212 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2213 return (long)(ctx
->session_cache_size
);
2214 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2215 l
= ctx
->session_cache_mode
;
2216 ctx
->session_cache_mode
= larg
;
2218 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2219 return (ctx
->session_cache_mode
);
2221 case SSL_CTRL_SESS_NUMBER
:
2222 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2223 case SSL_CTRL_SESS_CONNECT
:
2224 return (ctx
->stats
.sess_connect
);
2225 case SSL_CTRL_SESS_CONNECT_GOOD
:
2226 return (ctx
->stats
.sess_connect_good
);
2227 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2228 return (ctx
->stats
.sess_connect_renegotiate
);
2229 case SSL_CTRL_SESS_ACCEPT
:
2230 return (ctx
->stats
.sess_accept
);
2231 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2232 return (ctx
->stats
.sess_accept_good
);
2233 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2234 return (ctx
->stats
.sess_accept_renegotiate
);
2235 case SSL_CTRL_SESS_HIT
:
2236 return (ctx
->stats
.sess_hit
);
2237 case SSL_CTRL_SESS_CB_HIT
:
2238 return (ctx
->stats
.sess_cb_hit
);
2239 case SSL_CTRL_SESS_MISSES
:
2240 return (ctx
->stats
.sess_miss
);
2241 case SSL_CTRL_SESS_TIMEOUTS
:
2242 return (ctx
->stats
.sess_timeout
);
2243 case SSL_CTRL_SESS_CACHE_FULL
:
2244 return (ctx
->stats
.sess_cache_full
);
2246 return (ctx
->mode
|= larg
);
2247 case SSL_CTRL_CLEAR_MODE
:
2248 return (ctx
->mode
&= ~larg
);
2249 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2250 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2252 ctx
->max_send_fragment
= larg
;
2253 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2254 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2256 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2257 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2259 ctx
->split_send_fragment
= larg
;
2261 case SSL_CTRL_SET_MAX_PIPELINES
:
2262 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2264 ctx
->max_pipelines
= larg
;
2266 case SSL_CTRL_CERT_FLAGS
:
2267 return (ctx
->cert
->cert_flags
|= larg
);
2268 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2269 return (ctx
->cert
->cert_flags
&= ~larg
);
2270 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2271 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2272 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2273 &ctx
->min_proto_version
);
2274 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2275 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2276 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2277 &ctx
->max_proto_version
);
2279 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2283 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2286 case SSL_CTRL_SET_MSG_CALLBACK
:
2287 ctx
->msg_callback
= (void (*)
2288 (int write_p
, int version
, int content_type
,
2289 const void *buf
, size_t len
, SSL
*ssl
,
2294 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2298 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2307 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2308 const SSL_CIPHER
*const *bp
)
2310 if ((*ap
)->id
> (*bp
)->id
)
2312 if ((*ap
)->id
< (*bp
)->id
)
2317 /** return a STACK of the ciphers available for the SSL and in order of
2319 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2322 if (s
->cipher_list
!= NULL
) {
2323 return (s
->cipher_list
);
2324 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2325 return (s
->ctx
->cipher_list
);
2331 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2333 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2335 return s
->session
->ciphers
;
2338 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2340 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2342 ciphers
= SSL_get_ciphers(s
);
2345 ssl_set_client_disabled(s
);
2346 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2347 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2348 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2350 sk
= sk_SSL_CIPHER_new_null();
2353 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2354 sk_SSL_CIPHER_free(sk
);
2362 /** return a STACK of the ciphers available for the SSL and in order of
2364 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2367 if (s
->cipher_list_by_id
!= NULL
) {
2368 return (s
->cipher_list_by_id
);
2369 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2370 return (s
->ctx
->cipher_list_by_id
);
2376 /** The old interface to get the same thing as SSL_get_ciphers() */
2377 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2379 const SSL_CIPHER
*c
;
2380 STACK_OF(SSL_CIPHER
) *sk
;
2384 sk
= SSL_get_ciphers(s
);
2385 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2387 c
= sk_SSL_CIPHER_value(sk
, n
);
2393 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2395 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2398 return ctx
->cipher_list
;
2402 /** specify the ciphers to be used by default by the SSL_CTX */
2403 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2405 STACK_OF(SSL_CIPHER
) *sk
;
2407 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2408 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2410 * ssl_create_cipher_list may return an empty stack if it was unable to
2411 * find a cipher matching the given rule string (for example if the rule
2412 * string specifies a cipher which has been disabled). This is not an
2413 * error as far as ssl_create_cipher_list is concerned, and hence
2414 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2418 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2419 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2425 /** specify the ciphers to be used by the SSL */
2426 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2428 STACK_OF(SSL_CIPHER
) *sk
;
2430 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2431 &s
->cipher_list_by_id
, str
, s
->cert
);
2432 /* see comment in SSL_CTX_set_cipher_list */
2435 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2436 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2442 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2445 STACK_OF(SSL_CIPHER
) *sk
;
2446 const SSL_CIPHER
*c
;
2449 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2453 sk
= s
->session
->ciphers
;
2455 if (sk_SSL_CIPHER_num(sk
) == 0)
2458 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2461 c
= sk_SSL_CIPHER_value(sk
, i
);
2462 n
= strlen(c
->name
);
2469 memcpy(p
, c
->name
, n
+ 1);
2478 /** return a servername extension value if provided in Client Hello, or NULL.
2479 * So far, only host_name types are defined (RFC 3546).
2482 const char *SSL_get_servername(const SSL
*s
, const int type
)
2484 if (type
!= TLSEXT_NAMETYPE_host_name
)
2487 return s
->session
&& !s
->ext
.hostname
?
2488 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2491 int SSL_get_servername_type(const SSL
*s
)
2494 && (!s
->ext
.hostname
? s
->session
->
2495 ext
.hostname
: s
->ext
.hostname
))
2496 return TLSEXT_NAMETYPE_host_name
;
2501 * SSL_select_next_proto implements the standard protocol selection. It is
2502 * expected that this function is called from the callback set by
2503 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2504 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2505 * not included in the length. A byte string of length 0 is invalid. No byte
2506 * string may be truncated. The current, but experimental algorithm for
2507 * selecting the protocol is: 1) If the server doesn't support NPN then this
2508 * is indicated to the callback. In this case, the client application has to
2509 * abort the connection or have a default application level protocol. 2) If
2510 * the server supports NPN, but advertises an empty list then the client
2511 * selects the first protocol in its list, but indicates via the API that this
2512 * fallback case was enacted. 3) Otherwise, the client finds the first
2513 * protocol in the server's list that it supports and selects this protocol.
2514 * This is because it's assumed that the server has better information about
2515 * which protocol a client should use. 4) If the client doesn't support any
2516 * of the server's advertised protocols, then this is treated the same as
2517 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2518 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2520 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2521 const unsigned char *server
,
2522 unsigned int server_len
,
2523 const unsigned char *client
, unsigned int client_len
)
2526 const unsigned char *result
;
2527 int status
= OPENSSL_NPN_UNSUPPORTED
;
2530 * For each protocol in server preference order, see if we support it.
2532 for (i
= 0; i
< server_len
;) {
2533 for (j
= 0; j
< client_len
;) {
2534 if (server
[i
] == client
[j
] &&
2535 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2536 /* We found a match */
2537 result
= &server
[i
];
2538 status
= OPENSSL_NPN_NEGOTIATED
;
2548 /* There's no overlap between our protocols and the server's list. */
2550 status
= OPENSSL_NPN_NO_OVERLAP
;
2553 *out
= (unsigned char *)result
+ 1;
2554 *outlen
= result
[0];
2558 #ifndef OPENSSL_NO_NEXTPROTONEG
2560 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2561 * client's requested protocol for this connection and returns 0. If the
2562 * client didn't request any protocol, then *data is set to NULL. Note that
2563 * the client can request any protocol it chooses. The value returned from
2564 * this function need not be a member of the list of supported protocols
2565 * provided by the callback.
2567 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2574 *len
= (unsigned int)s
->ext
.npn_len
;
2579 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2580 * a TLS server needs a list of supported protocols for Next Protocol
2581 * Negotiation. The returned list must be in wire format. The list is
2582 * returned by setting |out| to point to it and |outlen| to its length. This
2583 * memory will not be modified, but one should assume that the SSL* keeps a
2584 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2585 * wishes to advertise. Otherwise, no such extension will be included in the
2588 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2589 SSL_CTX_npn_advertised_cb_func cb
,
2592 ctx
->ext
.npn_advertised_cb
= cb
;
2593 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2597 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2598 * client needs to select a protocol from the server's provided list. |out|
2599 * must be set to point to the selected protocol (which may be within |in|).
2600 * The length of the protocol name must be written into |outlen|. The
2601 * server's advertised protocols are provided in |in| and |inlen|. The
2602 * callback can assume that |in| is syntactically valid. The client must
2603 * select a protocol. It is fatal to the connection if this callback returns
2604 * a value other than SSL_TLSEXT_ERR_OK.
2606 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2607 SSL_CTX_npn_select_cb_func cb
,
2610 ctx
->ext
.npn_select_cb
= cb
;
2611 ctx
->ext
.npn_select_cb_arg
= arg
;
2616 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2617 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2618 * length-prefixed strings). Returns 0 on success.
2620 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2621 unsigned int protos_len
)
2623 OPENSSL_free(ctx
->ext
.alpn
);
2624 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2625 if (ctx
->ext
.alpn
== NULL
) {
2626 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2629 ctx
->ext
.alpn_len
= protos_len
;
2635 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2636 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2637 * length-prefixed strings). Returns 0 on success.
2639 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2640 unsigned int protos_len
)
2642 OPENSSL_free(ssl
->ext
.alpn
);
2643 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2644 if (ssl
->ext
.alpn
== NULL
) {
2645 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2648 ssl
->ext
.alpn_len
= protos_len
;
2654 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2655 * called during ClientHello processing in order to select an ALPN protocol
2656 * from the client's list of offered protocols.
2658 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2659 SSL_CTX_alpn_select_cb_func cb
,
2662 ctx
->ext
.alpn_select_cb
= cb
;
2663 ctx
->ext
.alpn_select_cb_arg
= arg
;
2667 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2668 * On return it sets |*data| to point to |*len| bytes of protocol name
2669 * (not including the leading length-prefix byte). If the server didn't
2670 * respond with a negotiated protocol then |*len| will be zero.
2672 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2677 *data
= ssl
->s3
->alpn_selected
;
2681 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2684 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2685 const char *label
, size_t llen
,
2686 const unsigned char *context
, size_t contextlen
,
2689 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2692 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2694 contextlen
, use_context
);
2697 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2699 const unsigned char *session_id
= a
->session_id
;
2701 unsigned char tmp_storage
[4];
2703 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2704 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2705 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2706 session_id
= tmp_storage
;
2710 ((unsigned long)session_id
[0]) |
2711 ((unsigned long)session_id
[1] << 8L) |
2712 ((unsigned long)session_id
[2] << 16L) |
2713 ((unsigned long)session_id
[3] << 24L);
2718 * NB: If this function (or indeed the hash function which uses a sort of
2719 * coarser function than this one) is changed, ensure
2720 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2721 * being able to construct an SSL_SESSION that will collide with any existing
2722 * session with a matching session ID.
2724 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2726 if (a
->ssl_version
!= b
->ssl_version
)
2728 if (a
->session_id_length
!= b
->session_id_length
)
2730 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2734 * These wrapper functions should remain rather than redeclaring
2735 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2736 * variable. The reason is that the functions aren't static, they're exposed
2740 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2742 SSL_CTX
*ret
= NULL
;
2745 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2749 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2752 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2753 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2756 ret
= OPENSSL_zalloc(sizeof(*ret
));
2761 ret
->min_proto_version
= 0;
2762 ret
->max_proto_version
= 0;
2763 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2764 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2765 /* We take the system default. */
2766 ret
->session_timeout
= meth
->get_timeout();
2767 ret
->references
= 1;
2768 ret
->lock
= CRYPTO_THREAD_lock_new();
2769 if (ret
->lock
== NULL
) {
2770 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2774 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2775 ret
->verify_mode
= SSL_VERIFY_NONE
;
2776 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2779 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2780 if (ret
->sessions
== NULL
)
2782 ret
->cert_store
= X509_STORE_new();
2783 if (ret
->cert_store
== NULL
)
2785 #ifndef OPENSSL_NO_CT
2786 ret
->ctlog_store
= CTLOG_STORE_new();
2787 if (ret
->ctlog_store
== NULL
)
2790 if (!ssl_create_cipher_list(ret
->method
,
2791 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2792 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2793 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2794 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2798 ret
->param
= X509_VERIFY_PARAM_new();
2799 if (ret
->param
== NULL
)
2802 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2803 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2806 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2807 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2811 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2814 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2817 /* No compression for DTLS */
2818 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2819 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2821 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2822 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2824 /* Setup RFC5077 ticket keys */
2825 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2826 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2827 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2828 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2829 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2830 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2831 ret
->options
|= SSL_OP_NO_TICKET
;
2833 #ifndef OPENSSL_NO_SRP
2834 if (!SSL_CTX_SRP_CTX_init(ret
))
2837 #ifndef OPENSSL_NO_ENGINE
2838 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2839 # define eng_strx(x) #x
2840 # define eng_str(x) eng_strx(x)
2841 /* Use specific client engine automatically... ignore errors */
2844 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2847 ENGINE_load_builtin_engines();
2848 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2850 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2856 * Default is to connect to non-RI servers. When RI is more widely
2857 * deployed might change this.
2859 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2861 * Disable compression by default to prevent CRIME. Applications can
2862 * re-enable compression by configuring
2863 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2864 * or by using the SSL_CONF library.
2866 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2868 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2871 * Default max early data is a fully loaded single record. Could be split
2872 * across multiple records in practice
2874 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2878 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2884 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2888 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2891 REF_PRINT_COUNT("SSL_CTX", ctx
);
2892 REF_ASSERT_ISNT(i
< 2);
2893 return ((i
> 1) ? 1 : 0);
2896 void SSL_CTX_free(SSL_CTX
*a
)
2903 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2904 REF_PRINT_COUNT("SSL_CTX", a
);
2907 REF_ASSERT_ISNT(i
< 0);
2909 X509_VERIFY_PARAM_free(a
->param
);
2910 dane_ctx_final(&a
->dane
);
2913 * Free internal session cache. However: the remove_cb() may reference
2914 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2915 * after the sessions were flushed.
2916 * As the ex_data handling routines might also touch the session cache,
2917 * the most secure solution seems to be: empty (flush) the cache, then
2918 * free ex_data, then finally free the cache.
2919 * (See ticket [openssl.org #212].)
2921 if (a
->sessions
!= NULL
)
2922 SSL_CTX_flush_sessions(a
, 0);
2924 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2925 lh_SSL_SESSION_free(a
->sessions
);
2926 X509_STORE_free(a
->cert_store
);
2927 #ifndef OPENSSL_NO_CT
2928 CTLOG_STORE_free(a
->ctlog_store
);
2930 sk_SSL_CIPHER_free(a
->cipher_list
);
2931 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2932 ssl_cert_free(a
->cert
);
2933 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2934 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2935 a
->comp_methods
= NULL
;
2936 #ifndef OPENSSL_NO_SRTP
2937 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2939 #ifndef OPENSSL_NO_SRP
2940 SSL_CTX_SRP_CTX_free(a
);
2942 #ifndef OPENSSL_NO_ENGINE
2943 ENGINE_finish(a
->client_cert_engine
);
2946 #ifndef OPENSSL_NO_EC
2947 OPENSSL_free(a
->ext
.ecpointformats
);
2948 OPENSSL_free(a
->ext
.supportedgroups
);
2950 OPENSSL_free(a
->ext
.alpn
);
2952 CRYPTO_THREAD_lock_free(a
->lock
);
2957 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2959 ctx
->default_passwd_callback
= cb
;
2962 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2964 ctx
->default_passwd_callback_userdata
= u
;
2967 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2969 return ctx
->default_passwd_callback
;
2972 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2974 return ctx
->default_passwd_callback_userdata
;
2977 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2979 s
->default_passwd_callback
= cb
;
2982 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2984 s
->default_passwd_callback_userdata
= u
;
2987 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
2989 return s
->default_passwd_callback
;
2992 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
2994 return s
->default_passwd_callback_userdata
;
2997 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
2998 int (*cb
) (X509_STORE_CTX
*, void *),
3001 ctx
->app_verify_callback
= cb
;
3002 ctx
->app_verify_arg
= arg
;
3005 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3006 int (*cb
) (int, X509_STORE_CTX
*))
3008 ctx
->verify_mode
= mode
;
3009 ctx
->default_verify_callback
= cb
;
3012 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3014 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3017 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3019 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3022 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3024 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3027 void ssl_set_masks(SSL
*s
)
3030 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
3031 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3032 unsigned long mask_k
, mask_a
;
3033 #ifndef OPENSSL_NO_EC
3034 int have_ecc_cert
, ecdsa_ok
;
3039 #ifndef OPENSSL_NO_DH
3040 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3045 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3046 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3047 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3048 #ifndef OPENSSL_NO_EC
3049 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3055 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
3056 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3059 #ifndef OPENSSL_NO_GOST
3060 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3061 mask_k
|= SSL_kGOST
;
3062 mask_a
|= SSL_aGOST12
;
3064 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3065 mask_k
|= SSL_kGOST
;
3066 mask_a
|= SSL_aGOST12
;
3068 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3069 mask_k
|= SSL_kGOST
;
3070 mask_a
|= SSL_aGOST01
;
3080 if (rsa_enc
|| rsa_sign
) {
3088 mask_a
|= SSL_aNULL
;
3091 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3092 * depending on the key usage extension.
3094 #ifndef OPENSSL_NO_EC
3095 if (have_ecc_cert
) {
3097 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3098 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3099 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3102 mask_a
|= SSL_aECDSA
;
3104 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3105 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3106 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3107 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3108 mask_a
|= SSL_aECDSA
;
3111 #ifndef OPENSSL_NO_EC
3112 mask_k
|= SSL_kECDHE
;
3115 #ifndef OPENSSL_NO_PSK
3118 if (mask_k
& SSL_kRSA
)
3119 mask_k
|= SSL_kRSAPSK
;
3120 if (mask_k
& SSL_kDHE
)
3121 mask_k
|= SSL_kDHEPSK
;
3122 if (mask_k
& SSL_kECDHE
)
3123 mask_k
|= SSL_kECDHEPSK
;
3126 s
->s3
->tmp
.mask_k
= mask_k
;
3127 s
->s3
->tmp
.mask_a
= mask_a
;
3130 #ifndef OPENSSL_NO_EC
3132 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3134 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3135 /* key usage, if present, must allow signing */
3136 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3137 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3138 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3142 return 1; /* all checks are ok */
3147 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3148 size_t *serverinfo_length
)
3150 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3151 *serverinfo_length
= 0;
3153 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3156 *serverinfo
= cpk
->serverinfo
;
3157 *serverinfo_length
= cpk
->serverinfo_length
;
3161 void ssl_update_cache(SSL
*s
, int mode
)
3166 * If the session_id_length is 0, we are not supposed to cache it, and it
3167 * would be rather hard to do anyway :-)
3169 if (s
->session
->session_id_length
== 0)
3172 i
= s
->session_ctx
->session_cache_mode
;
3174 && (!s
->hit
|| SSL_IS_TLS13(s
))
3175 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) != 0
3176 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3177 && s
->session_ctx
->new_session_cb
!= NULL
) {
3178 SSL_SESSION_up_ref(s
->session
);
3179 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3180 SSL_SESSION_free(s
->session
);
3183 /* auto flush every 255 connections */
3184 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3185 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3186 ? s
->session_ctx
->stats
.sess_connect_good
3187 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3188 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3193 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3198 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3203 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3207 if (s
->method
!= meth
) {
3208 const SSL_METHOD
*sm
= s
->method
;
3209 int (*hf
) (SSL
*) = s
->handshake_func
;
3211 if (sm
->version
== meth
->version
)
3216 ret
= s
->method
->ssl_new(s
);
3219 if (hf
== sm
->ssl_connect
)
3220 s
->handshake_func
= meth
->ssl_connect
;
3221 else if (hf
== sm
->ssl_accept
)
3222 s
->handshake_func
= meth
->ssl_accept
;
3227 int SSL_get_error(const SSL
*s
, int i
)
3234 return (SSL_ERROR_NONE
);
3237 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3238 * where we do encode the error
3240 if ((l
= ERR_peek_error()) != 0) {
3241 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3242 return (SSL_ERROR_SYSCALL
);
3244 return (SSL_ERROR_SSL
);
3247 if (SSL_want_read(s
)) {
3248 bio
= SSL_get_rbio(s
);
3249 if (BIO_should_read(bio
))
3250 return (SSL_ERROR_WANT_READ
);
3251 else if (BIO_should_write(bio
))
3253 * This one doesn't make too much sense ... We never try to write
3254 * to the rbio, and an application program where rbio and wbio
3255 * are separate couldn't even know what it should wait for.
3256 * However if we ever set s->rwstate incorrectly (so that we have
3257 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3258 * wbio *are* the same, this test works around that bug; so it
3259 * might be safer to keep it.
3261 return (SSL_ERROR_WANT_WRITE
);
3262 else if (BIO_should_io_special(bio
)) {
3263 reason
= BIO_get_retry_reason(bio
);
3264 if (reason
== BIO_RR_CONNECT
)
3265 return (SSL_ERROR_WANT_CONNECT
);
3266 else if (reason
== BIO_RR_ACCEPT
)
3267 return (SSL_ERROR_WANT_ACCEPT
);
3269 return (SSL_ERROR_SYSCALL
); /* unknown */
3273 if (SSL_want_write(s
)) {
3274 /* Access wbio directly - in order to use the buffered bio if present */
3276 if (BIO_should_write(bio
))
3277 return (SSL_ERROR_WANT_WRITE
);
3278 else if (BIO_should_read(bio
))
3280 * See above (SSL_want_read(s) with BIO_should_write(bio))
3282 return (SSL_ERROR_WANT_READ
);
3283 else if (BIO_should_io_special(bio
)) {
3284 reason
= BIO_get_retry_reason(bio
);
3285 if (reason
== BIO_RR_CONNECT
)
3286 return (SSL_ERROR_WANT_CONNECT
);
3287 else if (reason
== BIO_RR_ACCEPT
)
3288 return (SSL_ERROR_WANT_ACCEPT
);
3290 return (SSL_ERROR_SYSCALL
);
3293 if (SSL_want_x509_lookup(s
))
3294 return (SSL_ERROR_WANT_X509_LOOKUP
);
3295 if (SSL_want_async(s
))
3296 return SSL_ERROR_WANT_ASYNC
;
3297 if (SSL_want_async_job(s
))
3298 return SSL_ERROR_WANT_ASYNC_JOB
;
3299 if (SSL_want_early(s
))
3300 return SSL_ERROR_WANT_EARLY
;
3302 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3303 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3304 return (SSL_ERROR_ZERO_RETURN
);
3306 return (SSL_ERROR_SYSCALL
);
3309 static int ssl_do_handshake_intern(void *vargs
)
3311 struct ssl_async_args
*args
;
3314 args
= (struct ssl_async_args
*)vargs
;
3317 return s
->handshake_func(s
);
3320 int SSL_do_handshake(SSL
*s
)
3324 if (s
->handshake_func
== NULL
) {
3325 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3329 ossl_statem_check_finish_init(s
, -1);
3331 s
->method
->ssl_renegotiate_check(s
, 0);
3333 if (SSL_is_server(s
)) {
3334 /* clear SNI settings at server-side */
3335 OPENSSL_free(s
->ext
.hostname
);
3336 s
->ext
.hostname
= NULL
;
3339 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3340 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3341 struct ssl_async_args args
;
3345 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3347 ret
= s
->handshake_func(s
);
3353 void SSL_set_accept_state(SSL
*s
)
3357 ossl_statem_clear(s
);
3358 s
->handshake_func
= s
->method
->ssl_accept
;
3362 void SSL_set_connect_state(SSL
*s
)
3366 ossl_statem_clear(s
);
3367 s
->handshake_func
= s
->method
->ssl_connect
;
3371 int ssl_undefined_function(SSL
*s
)
3373 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3377 int ssl_undefined_void_function(void)
3379 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3380 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3384 int ssl_undefined_const_function(const SSL
*s
)
3389 const SSL_METHOD
*ssl_bad_method(int ver
)
3391 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3395 const char *ssl_protocol_to_string(int version
)
3399 case TLS1_3_VERSION
:
3402 case TLS1_2_VERSION
:
3405 case TLS1_1_VERSION
:
3420 case DTLS1_2_VERSION
:
3428 const char *SSL_get_version(const SSL
*s
)
3430 return ssl_protocol_to_string(s
->version
);
3433 SSL
*SSL_dup(SSL
*s
)
3435 STACK_OF(X509_NAME
) *sk
;
3440 /* If we're not quiescent, just up_ref! */
3441 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3442 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3447 * Otherwise, copy configuration state, and session if set.
3449 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3452 if (s
->session
!= NULL
) {
3454 * Arranges to share the same session via up_ref. This "copies"
3455 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3457 if (!SSL_copy_session_id(ret
, s
))
3461 * No session has been established yet, so we have to expect that
3462 * s->cert or ret->cert will be changed later -- they should not both
3463 * point to the same object, and thus we can't use
3464 * SSL_copy_session_id.
3466 if (!SSL_set_ssl_method(ret
, s
->method
))
3469 if (s
->cert
!= NULL
) {
3470 ssl_cert_free(ret
->cert
);
3471 ret
->cert
= ssl_cert_dup(s
->cert
);
3472 if (ret
->cert
== NULL
)
3476 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3477 (int)s
->sid_ctx_length
))
3481 if (!ssl_dane_dup(ret
, s
))
3483 ret
->version
= s
->version
;
3484 ret
->options
= s
->options
;
3485 ret
->mode
= s
->mode
;
3486 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3487 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3488 ret
->msg_callback
= s
->msg_callback
;
3489 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3490 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3491 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3492 ret
->generate_session_id
= s
->generate_session_id
;
3494 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3496 /* copy app data, a little dangerous perhaps */
3497 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3500 /* setup rbio, and wbio */
3501 if (s
->rbio
!= NULL
) {
3502 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3505 if (s
->wbio
!= NULL
) {
3506 if (s
->wbio
!= s
->rbio
) {
3507 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3510 BIO_up_ref(ret
->rbio
);
3511 ret
->wbio
= ret
->rbio
;
3515 ret
->server
= s
->server
;
3516 if (s
->handshake_func
) {
3518 SSL_set_accept_state(ret
);
3520 SSL_set_connect_state(ret
);
3522 ret
->shutdown
= s
->shutdown
;
3525 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3526 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3528 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3530 /* dup the cipher_list and cipher_list_by_id stacks */
3531 if (s
->cipher_list
!= NULL
) {
3532 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3535 if (s
->cipher_list_by_id
!= NULL
)
3536 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3540 /* Dup the client_CA list */
3541 if (s
->ca_names
!= NULL
) {
3542 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3545 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3546 xn
= sk_X509_NAME_value(sk
, i
);
3547 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3560 void ssl_clear_cipher_ctx(SSL
*s
)
3562 if (s
->enc_read_ctx
!= NULL
) {
3563 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3564 s
->enc_read_ctx
= NULL
;
3566 if (s
->enc_write_ctx
!= NULL
) {
3567 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3568 s
->enc_write_ctx
= NULL
;
3570 #ifndef OPENSSL_NO_COMP
3571 COMP_CTX_free(s
->expand
);
3573 COMP_CTX_free(s
->compress
);
3578 X509
*SSL_get_certificate(const SSL
*s
)
3580 if (s
->cert
!= NULL
)
3581 return (s
->cert
->key
->x509
);
3586 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3588 if (s
->cert
!= NULL
)
3589 return (s
->cert
->key
->privatekey
);
3594 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3596 if (ctx
->cert
!= NULL
)
3597 return ctx
->cert
->key
->x509
;
3602 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3604 if (ctx
->cert
!= NULL
)
3605 return ctx
->cert
->key
->privatekey
;
3610 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3612 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3613 return (s
->session
->cipher
);
3617 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
3619 return s
->s3
->tmp
.new_cipher
;
3622 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3624 #ifndef OPENSSL_NO_COMP
3625 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3631 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3633 #ifndef OPENSSL_NO_COMP
3634 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3640 int ssl_init_wbio_buffer(SSL
*s
)
3644 if (s
->bbio
!= NULL
) {
3645 /* Already buffered. */
3649 bbio
= BIO_new(BIO_f_buffer());
3650 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3652 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3656 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3661 int ssl_free_wbio_buffer(SSL
*s
)
3663 /* callers ensure s is never null */
3664 if (s
->bbio
== NULL
)
3667 s
->wbio
= BIO_pop(s
->wbio
);
3668 if (!ossl_assert(s
->wbio
!= NULL
))
3676 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3678 ctx
->quiet_shutdown
= mode
;
3681 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3683 return (ctx
->quiet_shutdown
);
3686 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3688 s
->quiet_shutdown
= mode
;
3691 int SSL_get_quiet_shutdown(const SSL
*s
)
3693 return (s
->quiet_shutdown
);
3696 void SSL_set_shutdown(SSL
*s
, int mode
)
3701 int SSL_get_shutdown(const SSL
*s
)
3706 int SSL_version(const SSL
*s
)
3711 int SSL_client_version(const SSL
*s
)
3713 return s
->client_version
;
3716 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3721 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3724 if (ssl
->ctx
== ctx
)
3727 ctx
= ssl
->session_ctx
;
3728 new_cert
= ssl_cert_dup(ctx
->cert
);
3729 if (new_cert
== NULL
) {
3733 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3734 ssl_cert_free(new_cert
);
3738 ssl_cert_free(ssl
->cert
);
3739 ssl
->cert
= new_cert
;
3742 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3743 * so setter APIs must prevent invalid lengths from entering the system.
3745 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3749 * If the session ID context matches that of the parent SSL_CTX,
3750 * inherit it from the new SSL_CTX as well. If however the context does
3751 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3752 * leave it unchanged.
3754 if ((ssl
->ctx
!= NULL
) &&
3755 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3756 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3757 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3758 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3761 SSL_CTX_up_ref(ctx
);
3762 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3768 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3770 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3773 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3775 X509_LOOKUP
*lookup
;
3777 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3780 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3782 /* Clear any errors if the default directory does not exist */
3788 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3790 X509_LOOKUP
*lookup
;
3792 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3796 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3798 /* Clear any errors if the default file does not exist */
3804 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3807 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3810 void SSL_set_info_callback(SSL
*ssl
,
3811 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3813 ssl
->info_callback
= cb
;
3817 * One compiler (Diab DCC) doesn't like argument names in returned function
3820 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3823 return ssl
->info_callback
;
3826 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3828 ssl
->verify_result
= arg
;
3831 long SSL_get_verify_result(const SSL
*ssl
)
3833 return (ssl
->verify_result
);
3836 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3839 return sizeof(ssl
->s3
->client_random
);
3840 if (outlen
> sizeof(ssl
->s3
->client_random
))
3841 outlen
= sizeof(ssl
->s3
->client_random
);
3842 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3846 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3849 return sizeof(ssl
->s3
->server_random
);
3850 if (outlen
> sizeof(ssl
->s3
->server_random
))
3851 outlen
= sizeof(ssl
->s3
->server_random
);
3852 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3856 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3857 unsigned char *out
, size_t outlen
)
3860 return session
->master_key_length
;
3861 if (outlen
> session
->master_key_length
)
3862 outlen
= session
->master_key_length
;
3863 memcpy(out
, session
->master_key
, outlen
);
3867 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
3870 if (len
> sizeof(sess
->master_key
))
3873 memcpy(sess
->master_key
, in
, len
);
3874 sess
->master_key_length
= len
;
3879 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3881 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3884 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3886 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3889 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3891 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3894 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3896 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3899 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3901 return (ctx
->cert_store
);
3904 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3906 X509_STORE_free(ctx
->cert_store
);
3907 ctx
->cert_store
= store
;
3910 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3913 X509_STORE_up_ref(store
);
3914 SSL_CTX_set_cert_store(ctx
, store
);
3917 int SSL_want(const SSL
*s
)
3919 return (s
->rwstate
);
3923 * \brief Set the callback for generating temporary DH keys.
3924 * \param ctx the SSL context.
3925 * \param dh the callback
3928 #ifndef OPENSSL_NO_DH
3929 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3930 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3933 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3936 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3939 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3943 #ifndef OPENSSL_NO_PSK
3944 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3946 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3947 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3950 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3951 if (identity_hint
!= NULL
) {
3952 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3953 if (ctx
->cert
->psk_identity_hint
== NULL
)
3956 ctx
->cert
->psk_identity_hint
= NULL
;
3960 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3965 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3966 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3969 OPENSSL_free(s
->cert
->psk_identity_hint
);
3970 if (identity_hint
!= NULL
) {
3971 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3972 if (s
->cert
->psk_identity_hint
== NULL
)
3975 s
->cert
->psk_identity_hint
= NULL
;
3979 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3981 if (s
== NULL
|| s
->session
== NULL
)
3983 return (s
->session
->psk_identity_hint
);
3986 const char *SSL_get_psk_identity(const SSL
*s
)
3988 if (s
== NULL
|| s
->session
== NULL
)
3990 return (s
->session
->psk_identity
);
3993 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
3995 s
->psk_client_callback
= cb
;
3998 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4000 ctx
->psk_client_callback
= cb
;
4003 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4005 s
->psk_server_callback
= cb
;
4008 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4010 ctx
->psk_server_callback
= cb
;
4014 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4016 s
->psk_find_session_cb
= cb
;
4019 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4020 SSL_psk_find_session_cb_func cb
)
4022 ctx
->psk_find_session_cb
= cb
;
4025 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4027 s
->psk_use_session_cb
= cb
;
4030 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4031 SSL_psk_use_session_cb_func cb
)
4033 ctx
->psk_use_session_cb
= cb
;
4036 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4037 void (*cb
) (int write_p
, int version
,
4038 int content_type
, const void *buf
,
4039 size_t len
, SSL
*ssl
, void *arg
))
4041 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4044 void SSL_set_msg_callback(SSL
*ssl
,
4045 void (*cb
) (int write_p
, int version
,
4046 int content_type
, const void *buf
,
4047 size_t len
, SSL
*ssl
, void *arg
))
4049 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4052 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4053 int (*cb
) (SSL
*ssl
,
4057 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4058 (void (*)(void))cb
);
4061 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4062 int (*cb
) (SSL
*ssl
,
4063 int is_forward_secure
))
4065 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4066 (void (*)(void))cb
);
4069 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4070 size_t (*cb
) (SSL
*ssl
, int type
,
4071 size_t len
, void *arg
))
4073 ctx
->record_padding_cb
= cb
;
4076 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4078 ctx
->record_padding_arg
= arg
;
4081 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
4083 return ctx
->record_padding_arg
;
4086 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4088 /* block size of 0 or 1 is basically no padding */
4089 if (block_size
== 1)
4090 ctx
->block_padding
= 0;
4091 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4092 ctx
->block_padding
= block_size
;
4098 void SSL_set_record_padding_callback(SSL
*ssl
,
4099 size_t (*cb
) (SSL
*ssl
, int type
,
4100 size_t len
, void *arg
))
4102 ssl
->record_padding_cb
= cb
;
4105 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4107 ssl
->record_padding_arg
= arg
;
4110 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
4112 return ssl
->record_padding_arg
;
4115 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4117 /* block size of 0 or 1 is basically no padding */
4118 if (block_size
== 1)
4119 ssl
->block_padding
= 0;
4120 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4121 ssl
->block_padding
= block_size
;
4128 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4129 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4130 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4131 * Returns the newly allocated ctx;
4134 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4136 ssl_clear_hash_ctx(hash
);
4137 *hash
= EVP_MD_CTX_new();
4138 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4139 EVP_MD_CTX_free(*hash
);
4146 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4149 EVP_MD_CTX_free(*hash
);
4153 /* Retrieve handshake hashes */
4154 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4157 EVP_MD_CTX
*ctx
= NULL
;
4158 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
4159 int hashleni
= EVP_MD_CTX_size(hdgst
);
4162 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
4165 ctx
= EVP_MD_CTX_new();
4169 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4170 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
4173 *hashlen
= hashleni
;
4177 EVP_MD_CTX_free(ctx
);
4181 int SSL_session_reused(SSL
*s
)
4186 int SSL_is_server(const SSL
*s
)
4191 #if OPENSSL_API_COMPAT < 0x10100000L
4192 void SSL_set_debug(SSL
*s
, int debug
)
4194 /* Old function was do-nothing anyway... */
4200 void SSL_set_security_level(SSL
*s
, int level
)
4202 s
->cert
->sec_level
= level
;
4205 int SSL_get_security_level(const SSL
*s
)
4207 return s
->cert
->sec_level
;
4210 void SSL_set_security_callback(SSL
*s
,
4211 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4212 int op
, int bits
, int nid
,
4213 void *other
, void *ex
))
4215 s
->cert
->sec_cb
= cb
;
4218 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4219 const SSL_CTX
*ctx
, int op
,
4220 int bits
, int nid
, void *other
,
4222 return s
->cert
->sec_cb
;
4225 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4227 s
->cert
->sec_ex
= ex
;
4230 void *SSL_get0_security_ex_data(const SSL
*s
)
4232 return s
->cert
->sec_ex
;
4235 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4237 ctx
->cert
->sec_level
= level
;
4240 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4242 return ctx
->cert
->sec_level
;
4245 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4246 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4247 int op
, int bits
, int nid
,
4248 void *other
, void *ex
))
4250 ctx
->cert
->sec_cb
= cb
;
4253 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4259 return ctx
->cert
->sec_cb
;
4262 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4264 ctx
->cert
->sec_ex
= ex
;
4267 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4269 return ctx
->cert
->sec_ex
;
4273 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4274 * can return unsigned long, instead of the generic long return value from the
4275 * control interface.
4277 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4279 return ctx
->options
;
4282 unsigned long SSL_get_options(const SSL
*s
)
4287 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4289 return ctx
->options
|= op
;
4292 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4294 return s
->options
|= op
;
4297 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4299 return ctx
->options
&= ~op
;
4302 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4304 return s
->options
&= ~op
;
4307 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4309 return s
->verified_chain
;
4312 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4314 #ifndef OPENSSL_NO_CT
4317 * Moves SCTs from the |src| stack to the |dst| stack.
4318 * The source of each SCT will be set to |origin|.
4319 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4321 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4323 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4324 sct_source_t origin
)
4330 *dst
= sk_SCT_new_null();
4332 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4337 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4338 if (SCT_set_source(sct
, origin
) != 1)
4341 if (sk_SCT_push(*dst
, sct
) <= 0)
4349 sk_SCT_push(src
, sct
); /* Put the SCT back */
4354 * Look for data collected during ServerHello and parse if found.
4355 * Returns the number of SCTs extracted.
4357 static int ct_extract_tls_extension_scts(SSL
*s
)
4359 int scts_extracted
= 0;
4361 if (s
->ext
.scts
!= NULL
) {
4362 const unsigned char *p
= s
->ext
.scts
;
4363 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4365 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4367 SCT_LIST_free(scts
);
4370 return scts_extracted
;
4374 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4375 * contains an SCT X509 extension. They will be stored in |s->scts|.
4377 * - The number of SCTs extracted, assuming an OCSP response exists.
4378 * - 0 if no OCSP response exists or it contains no SCTs.
4379 * - A negative integer if an error occurs.
4381 static int ct_extract_ocsp_response_scts(SSL
*s
)
4383 # ifndef OPENSSL_NO_OCSP
4384 int scts_extracted
= 0;
4385 const unsigned char *p
;
4386 OCSP_BASICRESP
*br
= NULL
;
4387 OCSP_RESPONSE
*rsp
= NULL
;
4388 STACK_OF(SCT
) *scts
= NULL
;
4391 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4394 p
= s
->ext
.ocsp
.resp
;
4395 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4399 br
= OCSP_response_get1_basic(rsp
);
4403 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4404 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4410 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4412 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4413 if (scts_extracted
< 0)
4417 SCT_LIST_free(scts
);
4418 OCSP_BASICRESP_free(br
);
4419 OCSP_RESPONSE_free(rsp
);
4420 return scts_extracted
;
4422 /* Behave as if no OCSP response exists */
4428 * Attempts to extract SCTs from the peer certificate.
4429 * Return the number of SCTs extracted, or a negative integer if an error
4432 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4434 int scts_extracted
= 0;
4435 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4438 STACK_OF(SCT
) *scts
=
4439 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4442 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4444 SCT_LIST_free(scts
);
4447 return scts_extracted
;
4451 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4452 * response (if it exists) and X509v3 extensions in the certificate.
4453 * Returns NULL if an error occurs.
4455 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4457 if (!s
->scts_parsed
) {
4458 if (ct_extract_tls_extension_scts(s
) < 0 ||
4459 ct_extract_ocsp_response_scts(s
) < 0 ||
4460 ct_extract_x509v3_extension_scts(s
) < 0)
4470 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4471 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4476 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4477 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4479 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4482 for (i
= 0; i
< count
; ++i
) {
4483 SCT
*sct
= sk_SCT_value(scts
, i
);
4484 int status
= SCT_get_validation_status(sct
);
4486 if (status
== SCT_VALIDATION_STATUS_VALID
)
4489 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4493 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4497 * Since code exists that uses the custom extension handler for CT, look
4498 * for this and throw an error if they have already registered to use CT.
4500 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4501 TLSEXT_TYPE_signed_certificate_timestamp
))
4503 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4504 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4508 if (callback
!= NULL
) {
4510 * If we are validating CT, then we MUST accept SCTs served via OCSP
4512 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4516 s
->ct_validation_callback
= callback
;
4517 s
->ct_validation_callback_arg
= arg
;
4522 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4523 ssl_ct_validation_cb callback
, void *arg
)
4526 * Since code exists that uses the custom extension handler for CT, look for
4527 * this and throw an error if they have already registered to use CT.
4529 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4530 TLSEXT_TYPE_signed_certificate_timestamp
))
4532 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4533 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4537 ctx
->ct_validation_callback
= callback
;
4538 ctx
->ct_validation_callback_arg
= arg
;
4542 int SSL_ct_is_enabled(const SSL
*s
)
4544 return s
->ct_validation_callback
!= NULL
;
4547 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4549 return ctx
->ct_validation_callback
!= NULL
;
4552 int ssl_validate_ct(SSL
*s
)
4555 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4557 SSL_DANE
*dane
= &s
->dane
;
4558 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4559 const STACK_OF(SCT
) *scts
;
4562 * If no callback is set, the peer is anonymous, or its chain is invalid,
4563 * skip SCT validation - just return success. Applications that continue
4564 * handshakes without certificates, with unverified chains, or pinned leaf
4565 * certificates are outside the scope of the WebPKI and CT.
4567 * The above exclusions notwithstanding the vast majority of peers will
4568 * have rather ordinary certificate chains validated by typical
4569 * applications that perform certificate verification and therefore will
4570 * process SCTs when enabled.
4572 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4573 s
->verify_result
!= X509_V_OK
||
4574 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4578 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4579 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4581 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4582 switch (dane
->mtlsa
->usage
) {
4583 case DANETLS_USAGE_DANE_TA
:
4584 case DANETLS_USAGE_DANE_EE
:
4589 ctx
= CT_POLICY_EVAL_CTX_new();
4591 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4595 issuer
= sk_X509_value(s
->verified_chain
, 1);
4596 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4597 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4598 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4599 CT_POLICY_EVAL_CTX_set_time(
4600 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4602 scts
= SSL_get0_peer_scts(s
);
4605 * This function returns success (> 0) only when all the SCTs are valid, 0
4606 * when some are invalid, and < 0 on various internal errors (out of
4607 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4608 * reason to abort the handshake, that decision is up to the callback.
4609 * Therefore, we error out only in the unexpected case that the return
4610 * value is negative.
4612 * XXX: One might well argue that the return value of this function is an
4613 * unfortunate design choice. Its job is only to determine the validation
4614 * status of each of the provided SCTs. So long as it correctly separates
4615 * the wheat from the chaff it should return success. Failure in this case
4616 * ought to correspond to an inability to carry out its duties.
4618 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4619 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4623 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4625 ret
= 0; /* This function returns 0 on failure */
4628 CT_POLICY_EVAL_CTX_free(ctx
);
4630 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4631 * failure return code here. Also the application may wish the complete
4632 * the handshake, and then disconnect cleanly at a higher layer, after
4633 * checking the verification status of the completed connection.
4635 * We therefore force a certificate verification failure which will be
4636 * visible via SSL_get_verify_result() and cached as part of any resumed
4639 * Note: the permissive callback is for information gathering only, always
4640 * returns success, and does not affect verification status. Only the
4641 * strict callback or a custom application-specified callback can trigger
4642 * connection failure or record a verification error.
4645 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4649 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4651 switch (validation_mode
) {
4653 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4655 case SSL_CT_VALIDATION_PERMISSIVE
:
4656 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4657 case SSL_CT_VALIDATION_STRICT
:
4658 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4662 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4664 switch (validation_mode
) {
4666 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4668 case SSL_CT_VALIDATION_PERMISSIVE
:
4669 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4670 case SSL_CT_VALIDATION_STRICT
:
4671 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4675 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4677 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4680 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4682 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4685 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4687 CTLOG_STORE_free(ctx
->ctlog_store
);
4688 ctx
->ctlog_store
= logs
;
4691 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4693 return ctx
->ctlog_store
;
4696 #endif /* OPENSSL_NO_CT */
4698 void SSL_CTX_set_early_cb(SSL_CTX
*c
, SSL_early_cb_fn cb
, void *arg
)
4701 c
->early_cb_arg
= arg
;
4704 int SSL_early_isv2(SSL
*s
)
4706 if (s
->clienthello
== NULL
)
4708 return s
->clienthello
->isv2
;
4711 unsigned int SSL_early_get0_legacy_version(SSL
*s
)
4713 if (s
->clienthello
== NULL
)
4715 return s
->clienthello
->legacy_version
;
4718 size_t SSL_early_get0_random(SSL
*s
, const unsigned char **out
)
4720 if (s
->clienthello
== NULL
)
4723 *out
= s
->clienthello
->random
;
4724 return SSL3_RANDOM_SIZE
;
4727 size_t SSL_early_get0_session_id(SSL
*s
, const unsigned char **out
)
4729 if (s
->clienthello
== NULL
)
4732 *out
= s
->clienthello
->session_id
;
4733 return s
->clienthello
->session_id_len
;
4736 size_t SSL_early_get0_ciphers(SSL
*s
, const unsigned char **out
)
4738 if (s
->clienthello
== NULL
)
4741 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4742 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4745 size_t SSL_early_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4747 if (s
->clienthello
== NULL
)
4750 *out
= s
->clienthello
->compressions
;
4751 return s
->clienthello
->compressions_len
;
4754 int SSL_early_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4760 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4762 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4763 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4767 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4768 if (present
== NULL
)
4770 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4771 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4773 if (ext
->received_order
>= num
)
4775 present
[ext
->received_order
] = ext
->type
;
4782 OPENSSL_free(present
);
4786 int SSL_early_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4792 if (s
->clienthello
== NULL
)
4794 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4795 r
= s
->clienthello
->pre_proc_exts
+ i
;
4796 if (r
->present
&& r
->type
== type
) {
4798 *out
= PACKET_data(&r
->data
);
4800 *outlen
= PACKET_remaining(&r
->data
);
4807 int SSL_free_buffers(SSL
*ssl
)
4809 RECORD_LAYER
*rl
= &ssl
->rlayer
;
4811 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
4814 RECORD_LAYER_release(rl
);
4818 int SSL_alloc_buffers(SSL
*ssl
)
4820 return ssl3_setup_buffers(ssl
);
4823 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4825 ctx
->keylog_callback
= cb
;
4828 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4830 return ctx
->keylog_callback
;
4833 static int nss_keylog_int(const char *prefix
,
4835 const uint8_t *parameter_1
,
4836 size_t parameter_1_len
,
4837 const uint8_t *parameter_2
,
4838 size_t parameter_2_len
)
4841 char *cursor
= NULL
;
4846 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4849 * Our output buffer will contain the following strings, rendered with
4850 * space characters in between, terminated by a NULL character: first the
4851 * prefix, then the first parameter, then the second parameter. The
4852 * meaning of each parameter depends on the specific key material being
4853 * logged. Note that the first and second parameters are encoded in
4854 * hexadecimal, so we need a buffer that is twice their lengths.
4856 prefix_len
= strlen(prefix
);
4857 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4858 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4859 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4863 strcpy(cursor
, prefix
);
4864 cursor
+= prefix_len
;
4867 for (i
= 0; i
< parameter_1_len
; i
++) {
4868 sprintf(cursor
, "%02x", parameter_1
[i
]);
4873 for (i
= 0; i
< parameter_2_len
; i
++) {
4874 sprintf(cursor
, "%02x", parameter_2
[i
]);
4879 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4885 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4886 const uint8_t *encrypted_premaster
,
4887 size_t encrypted_premaster_len
,
4888 const uint8_t *premaster
,
4889 size_t premaster_len
)
4891 if (encrypted_premaster_len
< 8) {
4892 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4896 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4897 return nss_keylog_int("RSA",
4899 encrypted_premaster
,
4905 int ssl_log_secret(SSL
*ssl
,
4907 const uint8_t *secret
,
4910 return nss_keylog_int(label
,
4912 ssl
->s3
->client_random
,
4918 #define SSLV2_CIPHER_LEN 3
4920 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4925 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4927 if (PACKET_remaining(cipher_suites
) == 0) {
4928 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4929 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4933 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4934 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4935 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4936 *al
= SSL_AD_DECODE_ERROR
;
4940 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4941 s
->s3
->tmp
.ciphers_raw
= NULL
;
4942 s
->s3
->tmp
.ciphers_rawlen
= 0;
4945 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4946 PACKET sslv2ciphers
= *cipher_suites
;
4947 unsigned int leadbyte
;
4951 * We store the raw ciphers list in SSLv3+ format so we need to do some
4952 * preprocessing to convert the list first. If there are any SSLv2 only
4953 * ciphersuites with a non-zero leading byte then we are going to
4954 * slightly over allocate because we won't store those. But that isn't a
4957 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4958 s
->s3
->tmp
.ciphers_raw
= raw
;
4960 *al
= SSL_AD_INTERNAL_ERROR
;
4963 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4964 PACKET_remaining(&sslv2ciphers
) > 0;
4965 raw
+= TLS_CIPHER_LEN
) {
4966 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4968 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4971 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4972 *al
= SSL_AD_DECODE_ERROR
;
4973 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4974 s
->s3
->tmp
.ciphers_raw
= NULL
;
4975 s
->s3
->tmp
.ciphers_rawlen
= 0;
4979 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4981 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4982 &s
->s3
->tmp
.ciphers_rawlen
)) {
4983 *al
= SSL_AD_INTERNAL_ERROR
;
4991 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
4992 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
4993 STACK_OF(SSL_CIPHER
) **scsvs
)
4998 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5000 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
5003 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5004 STACK_OF(SSL_CIPHER
) **skp
,
5005 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5006 int sslv2format
, int *al
)
5008 const SSL_CIPHER
*c
;
5009 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5010 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5012 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5013 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5015 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5017 if (PACKET_remaining(cipher_suites
) == 0) {
5018 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5019 *al
= SSL_AD_ILLEGAL_PARAMETER
;
5023 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5024 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5025 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5026 *al
= SSL_AD_DECODE_ERROR
;
5030 sk
= sk_SSL_CIPHER_new_null();
5031 scsvs
= sk_SSL_CIPHER_new_null();
5032 if (sk
== NULL
|| scsvs
== NULL
) {
5033 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5034 *al
= SSL_AD_INTERNAL_ERROR
;
5038 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5040 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5041 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5042 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5044 if (sslv2format
&& cipher
[0] != '\0')
5047 /* For SSLv2-compat, ignore leading 0-byte. */
5048 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5050 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5051 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5052 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5053 *al
= SSL_AD_INTERNAL_ERROR
;
5058 if (PACKET_remaining(cipher_suites
) > 0) {
5059 *al
= SSL_AD_DECODE_ERROR
;
5060 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5067 sk_SSL_CIPHER_free(sk
);
5068 if (scsvs_out
!= NULL
)
5071 sk_SSL_CIPHER_free(scsvs
);
5074 sk_SSL_CIPHER_free(sk
);
5075 sk_SSL_CIPHER_free(scsvs
);
5079 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5081 ctx
->max_early_data
= max_early_data
;
5086 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5088 return ctx
->max_early_data
;
5091 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5093 s
->max_early_data
= max_early_data
;
5098 uint32_t SSL_get_max_early_data(const SSL
*s
)
5100 return s
->max_early_data
;
5103 int ssl_randbytes(SSL
*s
, unsigned char *rnd
, size_t size
)
5105 if (s
->drbg
!= NULL
)
5106 return RAND_DRBG_generate(s
->drbg
, rnd
, size
, 0, NULL
, 0);
5107 return RAND_bytes(rnd
, (int)size
);