2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
14 #include <openssl/objects.h>
15 #include <openssl/lhash.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/ocsp.h>
19 #include <openssl/dh.h>
20 #include <openssl/engine.h>
21 #include <openssl/async.h>
22 #include <openssl/ct.h>
23 #include "internal/cryptlib.h"
24 #include "internal/rand.h"
25 #include "internal/refcount.h"
27 const char SSL_version_str
[] = OPENSSL_VERSION_TEXT
;
29 SSL3_ENC_METHOD ssl3_undef_enc_method
= {
31 * evil casts, but these functions are only called if there's a library
34 (int (*)(SSL
*, SSL3_RECORD
*, size_t, int))ssl_undefined_function
,
35 (int (*)(SSL
*, SSL3_RECORD
*, unsigned char *, int))ssl_undefined_function
,
36 ssl_undefined_function
,
37 (int (*)(SSL
*, unsigned char *, unsigned char *, size_t, size_t *))
38 ssl_undefined_function
,
39 (int (*)(SSL
*, int))ssl_undefined_function
,
40 (size_t (*)(SSL
*, const char *, size_t, unsigned char *))
41 ssl_undefined_function
,
42 NULL
, /* client_finished_label */
43 0, /* client_finished_label_len */
44 NULL
, /* server_finished_label */
45 0, /* server_finished_label_len */
46 (int (*)(int))ssl_undefined_function
,
47 (int (*)(SSL
*, unsigned char *, size_t, const char *,
48 size_t, const unsigned char *, size_t,
49 int use_context
))ssl_undefined_function
,
52 struct ssl_async_args
{
56 enum { READFUNC
, WRITEFUNC
, OTHERFUNC
} type
;
58 int (*func_read
) (SSL
*, void *, size_t, size_t *);
59 int (*func_write
) (SSL
*, const void *, size_t, size_t *);
60 int (*func_other
) (SSL
*);
70 DANETLS_MATCHING_FULL
, 0, NID_undef
73 DANETLS_MATCHING_2256
, 1, NID_sha256
76 DANETLS_MATCHING_2512
, 2, NID_sha512
80 static int dane_ctx_enable(struct dane_ctx_st
*dctx
)
84 uint8_t mdmax
= DANETLS_MATCHING_LAST
;
85 int n
= ((int)mdmax
) + 1; /* int to handle PrivMatch(255) */
88 if (dctx
->mdevp
!= NULL
)
91 mdevp
= OPENSSL_zalloc(n
* sizeof(*mdevp
));
92 mdord
= OPENSSL_zalloc(n
* sizeof(*mdord
));
94 if (mdord
== NULL
|| mdevp
== NULL
) {
97 SSLerr(SSL_F_DANE_CTX_ENABLE
, ERR_R_MALLOC_FAILURE
);
101 /* Install default entries */
102 for (i
= 0; i
< OSSL_NELEM(dane_mds
); ++i
) {
105 if (dane_mds
[i
].nid
== NID_undef
||
106 (md
= EVP_get_digestbynid(dane_mds
[i
].nid
)) == NULL
)
108 mdevp
[dane_mds
[i
].mtype
] = md
;
109 mdord
[dane_mds
[i
].mtype
] = dane_mds
[i
].ord
;
119 static void dane_ctx_final(struct dane_ctx_st
*dctx
)
121 OPENSSL_free(dctx
->mdevp
);
124 OPENSSL_free(dctx
->mdord
);
129 static void tlsa_free(danetls_record
*t
)
133 OPENSSL_free(t
->data
);
134 EVP_PKEY_free(t
->spki
);
138 static void dane_final(SSL_DANE
*dane
)
140 sk_danetls_record_pop_free(dane
->trecs
, tlsa_free
);
143 sk_X509_pop_free(dane
->certs
, X509_free
);
146 X509_free(dane
->mcert
);
154 * dane_copy - Copy dane configuration, sans verification state.
156 static int ssl_dane_dup(SSL
*to
, SSL
*from
)
161 if (!DANETLS_ENABLED(&from
->dane
))
164 dane_final(&to
->dane
);
165 to
->dane
.flags
= from
->dane
.flags
;
166 to
->dane
.dctx
= &to
->ctx
->dane
;
167 to
->dane
.trecs
= sk_danetls_record_new_null();
169 if (to
->dane
.trecs
== NULL
) {
170 SSLerr(SSL_F_SSL_DANE_DUP
, ERR_R_MALLOC_FAILURE
);
174 num
= sk_danetls_record_num(from
->dane
.trecs
);
175 for (i
= 0; i
< num
; ++i
) {
176 danetls_record
*t
= sk_danetls_record_value(from
->dane
.trecs
, i
);
178 if (SSL_dane_tlsa_add(to
, t
->usage
, t
->selector
, t
->mtype
,
179 t
->data
, t
->dlen
) <= 0)
185 static int dane_mtype_set(struct dane_ctx_st
*dctx
,
186 const EVP_MD
*md
, uint8_t mtype
, uint8_t ord
)
190 if (mtype
== DANETLS_MATCHING_FULL
&& md
!= NULL
) {
191 SSLerr(SSL_F_DANE_MTYPE_SET
, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL
);
195 if (mtype
> dctx
->mdmax
) {
196 const EVP_MD
**mdevp
;
198 int n
= ((int)mtype
) + 1;
200 mdevp
= OPENSSL_realloc(dctx
->mdevp
, n
* sizeof(*mdevp
));
202 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
207 mdord
= OPENSSL_realloc(dctx
->mdord
, n
* sizeof(*mdord
));
209 SSLerr(SSL_F_DANE_MTYPE_SET
, ERR_R_MALLOC_FAILURE
);
214 /* Zero-fill any gaps */
215 for (i
= dctx
->mdmax
+ 1; i
< mtype
; ++i
) {
223 dctx
->mdevp
[mtype
] = md
;
224 /* Coerce ordinal of disabled matching types to 0 */
225 dctx
->mdord
[mtype
] = (md
== NULL
) ? 0 : ord
;
230 static const EVP_MD
*tlsa_md_get(SSL_DANE
*dane
, uint8_t mtype
)
232 if (mtype
> dane
->dctx
->mdmax
)
234 return dane
->dctx
->mdevp
[mtype
];
237 static int dane_tlsa_add(SSL_DANE
*dane
,
240 uint8_t mtype
, unsigned char *data
, size_t dlen
)
243 const EVP_MD
*md
= NULL
;
244 int ilen
= (int)dlen
;
248 if (dane
->trecs
== NULL
) {
249 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_NOT_ENABLED
);
253 if (ilen
< 0 || dlen
!= (size_t)ilen
) {
254 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DATA_LENGTH
);
258 if (usage
> DANETLS_USAGE_LAST
) {
259 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE
);
263 if (selector
> DANETLS_SELECTOR_LAST
) {
264 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_SELECTOR
);
268 if (mtype
!= DANETLS_MATCHING_FULL
) {
269 md
= tlsa_md_get(dane
, mtype
);
271 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE
);
276 if (md
!= NULL
&& dlen
!= (size_t)EVP_MD_size(md
)) {
277 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH
);
281 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_NULL_DATA
);
285 if ((t
= OPENSSL_zalloc(sizeof(*t
))) == NULL
) {
286 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
291 t
->selector
= selector
;
293 t
->data
= OPENSSL_malloc(dlen
);
294 if (t
->data
== NULL
) {
296 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
299 memcpy(t
->data
, data
, dlen
);
302 /* Validate and cache full certificate or public key */
303 if (mtype
== DANETLS_MATCHING_FULL
) {
304 const unsigned char *p
= data
;
306 EVP_PKEY
*pkey
= NULL
;
309 case DANETLS_SELECTOR_CERT
:
310 if (!d2i_X509(&cert
, &p
, ilen
) || p
< data
||
311 dlen
!= (size_t)(p
- data
)) {
313 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
316 if (X509_get0_pubkey(cert
) == NULL
) {
318 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_CERTIFICATE
);
322 if ((DANETLS_USAGE_BIT(usage
) & DANETLS_TA_MASK
) == 0) {
328 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
329 * records that contain full certificates of trust-anchors that are
330 * not present in the wire chain. For usage PKIX-TA(0), we augment
331 * the chain with untrusted Full(0) certificates from DNS, in case
332 * they are missing from the chain.
334 if ((dane
->certs
== NULL
&&
335 (dane
->certs
= sk_X509_new_null()) == NULL
) ||
336 !sk_X509_push(dane
->certs
, cert
)) {
337 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
344 case DANETLS_SELECTOR_SPKI
:
345 if (!d2i_PUBKEY(&pkey
, &p
, ilen
) || p
< data
||
346 dlen
!= (size_t)(p
- data
)) {
348 SSLerr(SSL_F_DANE_TLSA_ADD
, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY
);
353 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
354 * records that contain full bare keys of trust-anchors that are
355 * not present in the wire chain.
357 if (usage
== DANETLS_USAGE_DANE_TA
)
366 * Find the right insertion point for the new record.
368 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
369 * they can be processed first, as they require no chain building, and no
370 * expiration or hostname checks. Because DANE-EE(3) is numerically
371 * largest, this is accomplished via descending sort by "usage".
373 * We also sort in descending order by matching ordinal to simplify
374 * the implementation of digest agility in the verification code.
376 * The choice of order for the selector is not significant, so we
377 * use the same descending order for consistency.
379 num
= sk_danetls_record_num(dane
->trecs
);
380 for (i
= 0; i
< num
; ++i
) {
381 danetls_record
*rec
= sk_danetls_record_value(dane
->trecs
, i
);
383 if (rec
->usage
> usage
)
385 if (rec
->usage
< usage
)
387 if (rec
->selector
> selector
)
389 if (rec
->selector
< selector
)
391 if (dane
->dctx
->mdord
[rec
->mtype
] > dane
->dctx
->mdord
[mtype
])
396 if (!sk_danetls_record_insert(dane
->trecs
, t
, i
)) {
398 SSLerr(SSL_F_DANE_TLSA_ADD
, ERR_R_MALLOC_FAILURE
);
401 dane
->umask
|= DANETLS_USAGE_BIT(usage
);
407 * Return 0 if there is only one version configured and it was disabled
408 * at configure time. Return 1 otherwise.
410 static int ssl_check_allowed_versions(int min_version
, int max_version
)
412 int minisdtls
= 0, maxisdtls
= 0;
414 /* Figure out if we're doing DTLS versions or TLS versions */
415 if (min_version
== DTLS1_BAD_VER
416 || min_version
>> 8 == DTLS1_VERSION_MAJOR
)
418 if (max_version
== DTLS1_BAD_VER
419 || max_version
>> 8 == DTLS1_VERSION_MAJOR
)
421 /* A wildcard version of 0 could be DTLS or TLS. */
422 if ((minisdtls
&& !maxisdtls
&& max_version
!= 0)
423 || (maxisdtls
&& !minisdtls
&& min_version
!= 0)) {
424 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
428 if (minisdtls
|| maxisdtls
) {
429 /* Do DTLS version checks. */
430 if (min_version
== 0)
431 /* Ignore DTLS1_BAD_VER */
432 min_version
= DTLS1_VERSION
;
433 if (max_version
== 0)
434 max_version
= DTLS1_2_VERSION
;
435 #ifdef OPENSSL_NO_DTLS1_2
436 if (max_version
== DTLS1_2_VERSION
)
437 max_version
= DTLS1_VERSION
;
439 #ifdef OPENSSL_NO_DTLS1
440 if (min_version
== DTLS1_VERSION
)
441 min_version
= DTLS1_2_VERSION
;
443 /* Done massaging versions; do the check. */
445 #ifdef OPENSSL_NO_DTLS1
446 || (DTLS_VERSION_GE(min_version
, DTLS1_VERSION
)
447 && DTLS_VERSION_GE(DTLS1_VERSION
, max_version
))
449 #ifdef OPENSSL_NO_DTLS1_2
450 || (DTLS_VERSION_GE(min_version
, DTLS1_2_VERSION
)
451 && DTLS_VERSION_GE(DTLS1_2_VERSION
, max_version
))
456 /* Regular TLS version checks. */
457 if (min_version
== 0)
458 min_version
= SSL3_VERSION
;
459 if (max_version
== 0)
460 max_version
= TLS1_3_VERSION
;
461 #ifdef OPENSSL_NO_TLS1_3
462 if (max_version
== TLS1_3_VERSION
)
463 max_version
= TLS1_2_VERSION
;
465 #ifdef OPENSSL_NO_TLS1_2
466 if (max_version
== TLS1_2_VERSION
)
467 max_version
= TLS1_1_VERSION
;
469 #ifdef OPENSSL_NO_TLS1_1
470 if (max_version
== TLS1_1_VERSION
)
471 max_version
= TLS1_VERSION
;
473 #ifdef OPENSSL_NO_TLS1
474 if (max_version
== TLS1_VERSION
)
475 max_version
= SSL3_VERSION
;
477 #ifdef OPENSSL_NO_SSL3
478 if (min_version
== SSL3_VERSION
)
479 min_version
= TLS1_VERSION
;
481 #ifdef OPENSSL_NO_TLS1
482 if (min_version
== TLS1_VERSION
)
483 min_version
= TLS1_1_VERSION
;
485 #ifdef OPENSSL_NO_TLS1_1
486 if (min_version
== TLS1_1_VERSION
)
487 min_version
= TLS1_2_VERSION
;
489 #ifdef OPENSSL_NO_TLS1_2
490 if (min_version
== TLS1_2_VERSION
)
491 min_version
= TLS1_3_VERSION
;
493 /* Done massaging versions; do the check. */
495 #ifdef OPENSSL_NO_SSL3
496 || (min_version
<= SSL3_VERSION
&& SSL3_VERSION
<= max_version
)
498 #ifdef OPENSSL_NO_TLS1
499 || (min_version
<= TLS1_VERSION
&& TLS1_VERSION
<= max_version
)
501 #ifdef OPENSSL_NO_TLS1_1
502 || (min_version
<= TLS1_1_VERSION
&& TLS1_1_VERSION
<= max_version
)
504 #ifdef OPENSSL_NO_TLS1_2
505 || (min_version
<= TLS1_2_VERSION
&& TLS1_2_VERSION
<= max_version
)
507 #ifdef OPENSSL_NO_TLS1_3
508 || (min_version
<= TLS1_3_VERSION
&& TLS1_3_VERSION
<= max_version
)
516 static void clear_ciphers(SSL
*s
)
518 /* clear the current cipher */
519 ssl_clear_cipher_ctx(s
);
520 ssl_clear_hash_ctx(&s
->read_hash
);
521 ssl_clear_hash_ctx(&s
->write_hash
);
524 int SSL_clear(SSL
*s
)
526 if (s
->method
== NULL
) {
527 SSLerr(SSL_F_SSL_CLEAR
, SSL_R_NO_METHOD_SPECIFIED
);
531 if (ssl_clear_bad_session(s
)) {
532 SSL_SESSION_free(s
->session
);
535 SSL_SESSION_free(s
->psksession
);
536 s
->psksession
= NULL
;
537 OPENSSL_free(s
->psksession_id
);
538 s
->psksession_id
= NULL
;
539 s
->psksession_id_len
= 0;
545 if (s
->renegotiate
) {
546 SSLerr(SSL_F_SSL_CLEAR
, ERR_R_INTERNAL_ERROR
);
550 ossl_statem_clear(s
);
552 s
->version
= s
->method
->version
;
553 s
->client_version
= s
->version
;
554 s
->rwstate
= SSL_NOTHING
;
556 BUF_MEM_free(s
->init_buf
);
561 s
->key_update
= SSL_KEY_UPDATE_NONE
;
563 /* Reset DANE verification result state */
566 X509_free(s
->dane
.mcert
);
567 s
->dane
.mcert
= NULL
;
568 s
->dane
.mtlsa
= NULL
;
570 /* Clear the verification result peername */
571 X509_VERIFY_PARAM_move_peername(s
->param
, NULL
);
574 * Check to see if we were changed into a different method, if so, revert
577 if (s
->method
!= s
->ctx
->method
) {
578 s
->method
->ssl_free(s
);
579 s
->method
= s
->ctx
->method
;
580 if (!s
->method
->ssl_new(s
))
583 if (!s
->method
->ssl_clear(s
))
587 RECORD_LAYER_clear(&s
->rlayer
);
592 /** Used to change an SSL_CTXs default SSL method type */
593 int SSL_CTX_set_ssl_version(SSL_CTX
*ctx
, const SSL_METHOD
*meth
)
595 STACK_OF(SSL_CIPHER
) *sk
;
599 sk
= ssl_create_cipher_list(ctx
->method
, &(ctx
->cipher_list
),
600 &(ctx
->cipher_list_by_id
),
601 SSL_DEFAULT_CIPHER_LIST
, ctx
->cert
);
602 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= 0)) {
603 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION
, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS
);
609 SSL
*SSL_new(SSL_CTX
*ctx
)
614 SSLerr(SSL_F_SSL_NEW
, SSL_R_NULL_SSL_CTX
);
617 if (ctx
->method
== NULL
) {
618 SSLerr(SSL_F_SSL_NEW
, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION
);
622 s
= OPENSSL_zalloc(sizeof(*s
));
626 s
->lock
= CRYPTO_THREAD_lock_new();
631 * If not using the standard RAND (say for fuzzing), then don't use a
634 if (RAND_get_rand_method() == RAND_OpenSSL()) {
635 s
->drbg
= RAND_DRBG_new(NID_aes_128_ctr
, RAND_DRBG_FLAG_CTR_USE_DF
,
636 RAND_DRBG_get0_global());
638 || RAND_DRBG_instantiate(s
->drbg
, NULL
, 0) == 0) {
639 CRYPTO_THREAD_lock_free(s
->lock
);
644 RECORD_LAYER_init(&s
->rlayer
, s
);
646 s
->options
= ctx
->options
;
647 s
->dane
.flags
= ctx
->dane
.flags
;
648 s
->min_proto_version
= ctx
->min_proto_version
;
649 s
->max_proto_version
= ctx
->max_proto_version
;
651 s
->max_cert_list
= ctx
->max_cert_list
;
653 s
->max_early_data
= ctx
->max_early_data
;
656 * Earlier library versions used to copy the pointer to the CERT, not
657 * its contents; only when setting new parameters for the per-SSL
658 * copy, ssl_cert_new would be called (and the direct reference to
659 * the per-SSL_CTX settings would be lost, but those still were
660 * indirectly accessed for various purposes, and for that reason they
661 * used to be known as s->ctx->default_cert). Now we don't look at the
662 * SSL_CTX's CERT after having duplicated it once.
664 s
->cert
= ssl_cert_dup(ctx
->cert
);
668 RECORD_LAYER_set_read_ahead(&s
->rlayer
, ctx
->read_ahead
);
669 s
->msg_callback
= ctx
->msg_callback
;
670 s
->msg_callback_arg
= ctx
->msg_callback_arg
;
671 s
->verify_mode
= ctx
->verify_mode
;
672 s
->not_resumable_session_cb
= ctx
->not_resumable_session_cb
;
673 s
->record_padding_cb
= ctx
->record_padding_cb
;
674 s
->record_padding_arg
= ctx
->record_padding_arg
;
675 s
->block_padding
= ctx
->block_padding
;
676 s
->sid_ctx_length
= ctx
->sid_ctx_length
;
677 if (!ossl_assert(s
->sid_ctx_length
<= sizeof s
->sid_ctx
))
679 memcpy(&s
->sid_ctx
, &ctx
->sid_ctx
, sizeof(s
->sid_ctx
));
680 s
->verify_callback
= ctx
->default_verify_callback
;
681 s
->generate_session_id
= ctx
->generate_session_id
;
683 s
->param
= X509_VERIFY_PARAM_new();
684 if (s
->param
== NULL
)
686 X509_VERIFY_PARAM_inherit(s
->param
, ctx
->param
);
687 s
->quiet_shutdown
= ctx
->quiet_shutdown
;
688 s
->max_send_fragment
= ctx
->max_send_fragment
;
689 s
->split_send_fragment
= ctx
->split_send_fragment
;
690 s
->max_pipelines
= ctx
->max_pipelines
;
691 if (s
->max_pipelines
> 1)
692 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
693 if (ctx
->default_read_buf_len
> 0)
694 SSL_set_default_read_buffer_len(s
, ctx
->default_read_buf_len
);
699 s
->ext
.debug_arg
= NULL
;
700 s
->ext
.ticket_expected
= 0;
701 s
->ext
.status_type
= ctx
->ext
.status_type
;
702 s
->ext
.status_expected
= 0;
703 s
->ext
.ocsp
.ids
= NULL
;
704 s
->ext
.ocsp
.exts
= NULL
;
705 s
->ext
.ocsp
.resp
= NULL
;
706 s
->ext
.ocsp
.resp_len
= 0;
708 s
->session_ctx
= ctx
;
709 #ifndef OPENSSL_NO_EC
710 if (ctx
->ext
.ecpointformats
) {
711 s
->ext
.ecpointformats
=
712 OPENSSL_memdup(ctx
->ext
.ecpointformats
,
713 ctx
->ext
.ecpointformats_len
);
714 if (!s
->ext
.ecpointformats
)
716 s
->ext
.ecpointformats_len
=
717 ctx
->ext
.ecpointformats_len
;
719 if (ctx
->ext
.supportedgroups
) {
720 s
->ext
.supportedgroups
=
721 OPENSSL_memdup(ctx
->ext
.supportedgroups
,
722 ctx
->ext
.supportedgroups_len
);
723 if (!s
->ext
.supportedgroups
)
725 s
->ext
.supportedgroups_len
= ctx
->ext
.supportedgroups_len
;
728 #ifndef OPENSSL_NO_NEXTPROTONEG
732 if (s
->ctx
->ext
.alpn
) {
733 s
->ext
.alpn
= OPENSSL_malloc(s
->ctx
->ext
.alpn_len
);
734 if (s
->ext
.alpn
== NULL
)
736 memcpy(s
->ext
.alpn
, s
->ctx
->ext
.alpn
, s
->ctx
->ext
.alpn_len
);
737 s
->ext
.alpn_len
= s
->ctx
->ext
.alpn_len
;
740 s
->verified_chain
= NULL
;
741 s
->verify_result
= X509_V_OK
;
743 s
->default_passwd_callback
= ctx
->default_passwd_callback
;
744 s
->default_passwd_callback_userdata
= ctx
->default_passwd_callback_userdata
;
746 s
->method
= ctx
->method
;
748 s
->key_update
= SSL_KEY_UPDATE_NONE
;
750 if (!s
->method
->ssl_new(s
))
753 s
->server
= (ctx
->method
->ssl_accept
== ssl_undefined_function
) ? 0 : 1;
758 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
))
761 #ifndef OPENSSL_NO_PSK
762 s
->psk_client_callback
= ctx
->psk_client_callback
;
763 s
->psk_server_callback
= ctx
->psk_server_callback
;
765 s
->psk_find_session_cb
= ctx
->psk_find_session_cb
;
766 s
->psk_use_session_cb
= ctx
->psk_use_session_cb
;
770 #ifndef OPENSSL_NO_CT
771 if (!SSL_set_ct_validation_callback(s
, ctx
->ct_validation_callback
,
772 ctx
->ct_validation_callback_arg
))
779 SSLerr(SSL_F_SSL_NEW
, ERR_R_MALLOC_FAILURE
);
783 int SSL_is_dtls(const SSL
*s
)
785 return SSL_IS_DTLS(s
) ? 1 : 0;
788 int SSL_up_ref(SSL
*s
)
792 if (CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
) <= 0)
795 REF_PRINT_COUNT("SSL", s
);
796 REF_ASSERT_ISNT(i
< 2);
797 return ((i
> 1) ? 1 : 0);
800 int SSL_CTX_set_session_id_context(SSL_CTX
*ctx
, const unsigned char *sid_ctx
,
801 unsigned int sid_ctx_len
)
803 if (sid_ctx_len
> sizeof ctx
->sid_ctx
) {
804 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT
,
805 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
808 ctx
->sid_ctx_length
= sid_ctx_len
;
809 memcpy(ctx
->sid_ctx
, sid_ctx
, sid_ctx_len
);
814 int SSL_set_session_id_context(SSL
*ssl
, const unsigned char *sid_ctx
,
815 unsigned int sid_ctx_len
)
817 if (sid_ctx_len
> SSL_MAX_SID_CTX_LENGTH
) {
818 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT
,
819 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG
);
822 ssl
->sid_ctx_length
= sid_ctx_len
;
823 memcpy(ssl
->sid_ctx
, sid_ctx
, sid_ctx_len
);
828 int SSL_CTX_set_generate_session_id(SSL_CTX
*ctx
, GEN_SESSION_CB cb
)
830 CRYPTO_THREAD_write_lock(ctx
->lock
);
831 ctx
->generate_session_id
= cb
;
832 CRYPTO_THREAD_unlock(ctx
->lock
);
836 int SSL_set_generate_session_id(SSL
*ssl
, GEN_SESSION_CB cb
)
838 CRYPTO_THREAD_write_lock(ssl
->lock
);
839 ssl
->generate_session_id
= cb
;
840 CRYPTO_THREAD_unlock(ssl
->lock
);
844 int SSL_has_matching_session_id(const SSL
*ssl
, const unsigned char *id
,
848 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
849 * we can "construct" a session to give us the desired check - i.e. to
850 * find if there's a session in the hash table that would conflict with
851 * any new session built out of this id/id_len and the ssl_version in use
856 if (id_len
> sizeof r
.session_id
)
859 r
.ssl_version
= ssl
->version
;
860 r
.session_id_length
= id_len
;
861 memcpy(r
.session_id
, id
, id_len
);
863 CRYPTO_THREAD_read_lock(ssl
->session_ctx
->lock
);
864 p
= lh_SSL_SESSION_retrieve(ssl
->session_ctx
->sessions
, &r
);
865 CRYPTO_THREAD_unlock(ssl
->session_ctx
->lock
);
869 int SSL_CTX_set_purpose(SSL_CTX
*s
, int purpose
)
871 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
874 int SSL_set_purpose(SSL
*s
, int purpose
)
876 return X509_VERIFY_PARAM_set_purpose(s
->param
, purpose
);
879 int SSL_CTX_set_trust(SSL_CTX
*s
, int trust
)
881 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
884 int SSL_set_trust(SSL
*s
, int trust
)
886 return X509_VERIFY_PARAM_set_trust(s
->param
, trust
);
889 int SSL_set1_host(SSL
*s
, const char *hostname
)
891 return X509_VERIFY_PARAM_set1_host(s
->param
, hostname
, 0);
894 int SSL_add1_host(SSL
*s
, const char *hostname
)
896 return X509_VERIFY_PARAM_add1_host(s
->param
, hostname
, 0);
899 void SSL_set_hostflags(SSL
*s
, unsigned int flags
)
901 X509_VERIFY_PARAM_set_hostflags(s
->param
, flags
);
904 const char *SSL_get0_peername(SSL
*s
)
906 return X509_VERIFY_PARAM_get0_peername(s
->param
);
909 int SSL_CTX_dane_enable(SSL_CTX
*ctx
)
911 return dane_ctx_enable(&ctx
->dane
);
914 unsigned long SSL_CTX_dane_set_flags(SSL_CTX
*ctx
, unsigned long flags
)
916 unsigned long orig
= ctx
->dane
.flags
;
918 ctx
->dane
.flags
|= flags
;
922 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX
*ctx
, unsigned long flags
)
924 unsigned long orig
= ctx
->dane
.flags
;
926 ctx
->dane
.flags
&= ~flags
;
930 int SSL_dane_enable(SSL
*s
, const char *basedomain
)
932 SSL_DANE
*dane
= &s
->dane
;
934 if (s
->ctx
->dane
.mdmax
== 0) {
935 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_CONTEXT_NOT_DANE_ENABLED
);
938 if (dane
->trecs
!= NULL
) {
939 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_DANE_ALREADY_ENABLED
);
944 * Default SNI name. This rejects empty names, while set1_host below
945 * accepts them and disables host name checks. To avoid side-effects with
946 * invalid input, set the SNI name first.
948 if (s
->ext
.hostname
== NULL
) {
949 if (!SSL_set_tlsext_host_name(s
, basedomain
)) {
950 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
955 /* Primary RFC6125 reference identifier */
956 if (!X509_VERIFY_PARAM_set1_host(s
->param
, basedomain
, 0)) {
957 SSLerr(SSL_F_SSL_DANE_ENABLE
, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN
);
963 dane
->dctx
= &s
->ctx
->dane
;
964 dane
->trecs
= sk_danetls_record_new_null();
966 if (dane
->trecs
== NULL
) {
967 SSLerr(SSL_F_SSL_DANE_ENABLE
, ERR_R_MALLOC_FAILURE
);
973 unsigned long SSL_dane_set_flags(SSL
*ssl
, unsigned long flags
)
975 unsigned long orig
= ssl
->dane
.flags
;
977 ssl
->dane
.flags
|= flags
;
981 unsigned long SSL_dane_clear_flags(SSL
*ssl
, unsigned long flags
)
983 unsigned long orig
= ssl
->dane
.flags
;
985 ssl
->dane
.flags
&= ~flags
;
989 int SSL_get0_dane_authority(SSL
*s
, X509
**mcert
, EVP_PKEY
**mspki
)
991 SSL_DANE
*dane
= &s
->dane
;
993 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
997 *mcert
= dane
->mcert
;
999 *mspki
= (dane
->mcert
== NULL
) ? dane
->mtlsa
->spki
: NULL
;
1004 int SSL_get0_dane_tlsa(SSL
*s
, uint8_t *usage
, uint8_t *selector
,
1005 uint8_t *mtype
, unsigned const char **data
, size_t *dlen
)
1007 SSL_DANE
*dane
= &s
->dane
;
1009 if (!DANETLS_ENABLED(dane
) || s
->verify_result
!= X509_V_OK
)
1013 *usage
= dane
->mtlsa
->usage
;
1015 *selector
= dane
->mtlsa
->selector
;
1017 *mtype
= dane
->mtlsa
->mtype
;
1019 *data
= dane
->mtlsa
->data
;
1021 *dlen
= dane
->mtlsa
->dlen
;
1026 SSL_DANE
*SSL_get0_dane(SSL
*s
)
1031 int SSL_dane_tlsa_add(SSL
*s
, uint8_t usage
, uint8_t selector
,
1032 uint8_t mtype
, unsigned char *data
, size_t dlen
)
1034 return dane_tlsa_add(&s
->dane
, usage
, selector
, mtype
, data
, dlen
);
1037 int SSL_CTX_dane_mtype_set(SSL_CTX
*ctx
, const EVP_MD
*md
, uint8_t mtype
,
1040 return dane_mtype_set(&ctx
->dane
, md
, mtype
, ord
);
1043 int SSL_CTX_set1_param(SSL_CTX
*ctx
, X509_VERIFY_PARAM
*vpm
)
1045 return X509_VERIFY_PARAM_set1(ctx
->param
, vpm
);
1048 int SSL_set1_param(SSL
*ssl
, X509_VERIFY_PARAM
*vpm
)
1050 return X509_VERIFY_PARAM_set1(ssl
->param
, vpm
);
1053 X509_VERIFY_PARAM
*SSL_CTX_get0_param(SSL_CTX
*ctx
)
1058 X509_VERIFY_PARAM
*SSL_get0_param(SSL
*ssl
)
1063 void SSL_certs_clear(SSL
*s
)
1065 ssl_cert_clear_certs(s
->cert
);
1068 void SSL_free(SSL
*s
)
1075 CRYPTO_DOWN_REF(&s
->references
, &i
, s
->lock
);
1076 REF_PRINT_COUNT("SSL", s
);
1079 REF_ASSERT_ISNT(i
< 0);
1081 X509_VERIFY_PARAM_free(s
->param
);
1082 dane_final(&s
->dane
);
1083 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL
, s
, &s
->ex_data
);
1085 /* Ignore return value */
1086 ssl_free_wbio_buffer(s
);
1088 BIO_free_all(s
->wbio
);
1089 BIO_free_all(s
->rbio
);
1091 BUF_MEM_free(s
->init_buf
);
1093 /* add extra stuff */
1094 sk_SSL_CIPHER_free(s
->cipher_list
);
1095 sk_SSL_CIPHER_free(s
->cipher_list_by_id
);
1097 /* Make the next call work :-) */
1098 if (s
->session
!= NULL
) {
1099 ssl_clear_bad_session(s
);
1100 SSL_SESSION_free(s
->session
);
1102 SSL_SESSION_free(s
->psksession
);
1103 OPENSSL_free(s
->psksession_id
);
1107 ssl_cert_free(s
->cert
);
1108 /* Free up if allocated */
1110 OPENSSL_free(s
->ext
.hostname
);
1111 SSL_CTX_free(s
->session_ctx
);
1112 #ifndef OPENSSL_NO_EC
1113 OPENSSL_free(s
->ext
.ecpointformats
);
1114 OPENSSL_free(s
->ext
.supportedgroups
);
1115 #endif /* OPENSSL_NO_EC */
1116 sk_X509_EXTENSION_pop_free(s
->ext
.ocsp
.exts
, X509_EXTENSION_free
);
1117 #ifndef OPENSSL_NO_OCSP
1118 sk_OCSP_RESPID_pop_free(s
->ext
.ocsp
.ids
, OCSP_RESPID_free
);
1120 #ifndef OPENSSL_NO_CT
1121 SCT_LIST_free(s
->scts
);
1122 OPENSSL_free(s
->ext
.scts
);
1124 OPENSSL_free(s
->ext
.ocsp
.resp
);
1125 OPENSSL_free(s
->ext
.alpn
);
1126 OPENSSL_free(s
->ext
.tls13_cookie
);
1127 OPENSSL_free(s
->clienthello
);
1129 sk_X509_NAME_pop_free(s
->ca_names
, X509_NAME_free
);
1131 sk_X509_pop_free(s
->verified_chain
, X509_free
);
1133 if (s
->method
!= NULL
)
1134 s
->method
->ssl_free(s
);
1136 RECORD_LAYER_release(&s
->rlayer
);
1138 SSL_CTX_free(s
->ctx
);
1140 ASYNC_WAIT_CTX_free(s
->waitctx
);
1142 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1143 OPENSSL_free(s
->ext
.npn
);
1146 #ifndef OPENSSL_NO_SRTP
1147 sk_SRTP_PROTECTION_PROFILE_free(s
->srtp_profiles
);
1150 RAND_DRBG_free(s
->drbg
);
1151 CRYPTO_THREAD_lock_free(s
->lock
);
1156 void SSL_set0_rbio(SSL
*s
, BIO
*rbio
)
1158 BIO_free_all(s
->rbio
);
1162 void SSL_set0_wbio(SSL
*s
, BIO
*wbio
)
1165 * If the output buffering BIO is still in place, remove it
1167 if (s
->bbio
!= NULL
)
1168 s
->wbio
= BIO_pop(s
->wbio
);
1170 BIO_free_all(s
->wbio
);
1173 /* Re-attach |bbio| to the new |wbio|. */
1174 if (s
->bbio
!= NULL
)
1175 s
->wbio
= BIO_push(s
->bbio
, s
->wbio
);
1178 void SSL_set_bio(SSL
*s
, BIO
*rbio
, BIO
*wbio
)
1181 * For historical reasons, this function has many different cases in
1182 * ownership handling.
1185 /* If nothing has changed, do nothing */
1186 if (rbio
== SSL_get_rbio(s
) && wbio
== SSL_get_wbio(s
))
1190 * If the two arguments are equal then one fewer reference is granted by the
1191 * caller than we want to take
1193 if (rbio
!= NULL
&& rbio
== wbio
)
1197 * If only the wbio is changed only adopt one reference.
1199 if (rbio
== SSL_get_rbio(s
)) {
1200 SSL_set0_wbio(s
, wbio
);
1204 * There is an asymmetry here for historical reasons. If only the rbio is
1205 * changed AND the rbio and wbio were originally different, then we only
1206 * adopt one reference.
1208 if (wbio
== SSL_get_wbio(s
) && SSL_get_rbio(s
) != SSL_get_wbio(s
)) {
1209 SSL_set0_rbio(s
, rbio
);
1213 /* Otherwise, adopt both references. */
1214 SSL_set0_rbio(s
, rbio
);
1215 SSL_set0_wbio(s
, wbio
);
1218 BIO
*SSL_get_rbio(const SSL
*s
)
1223 BIO
*SSL_get_wbio(const SSL
*s
)
1225 if (s
->bbio
!= NULL
) {
1227 * If |bbio| is active, the true caller-configured BIO is its
1230 return BIO_next(s
->bbio
);
1235 int SSL_get_fd(const SSL
*s
)
1237 return SSL_get_rfd(s
);
1240 int SSL_get_rfd(const SSL
*s
)
1245 b
= SSL_get_rbio(s
);
1246 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1248 BIO_get_fd(r
, &ret
);
1252 int SSL_get_wfd(const SSL
*s
)
1257 b
= SSL_get_wbio(s
);
1258 r
= BIO_find_type(b
, BIO_TYPE_DESCRIPTOR
);
1260 BIO_get_fd(r
, &ret
);
1264 #ifndef OPENSSL_NO_SOCK
1265 int SSL_set_fd(SSL
*s
, int fd
)
1270 bio
= BIO_new(BIO_s_socket());
1273 SSLerr(SSL_F_SSL_SET_FD
, ERR_R_BUF_LIB
);
1276 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1277 SSL_set_bio(s
, bio
, bio
);
1283 int SSL_set_wfd(SSL
*s
, int fd
)
1285 BIO
*rbio
= SSL_get_rbio(s
);
1287 if (rbio
== NULL
|| BIO_method_type(rbio
) != BIO_TYPE_SOCKET
1288 || (int)BIO_get_fd(rbio
, NULL
) != fd
) {
1289 BIO
*bio
= BIO_new(BIO_s_socket());
1292 SSLerr(SSL_F_SSL_SET_WFD
, ERR_R_BUF_LIB
);
1295 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1296 SSL_set0_wbio(s
, bio
);
1299 SSL_set0_wbio(s
, rbio
);
1304 int SSL_set_rfd(SSL
*s
, int fd
)
1306 BIO
*wbio
= SSL_get_wbio(s
);
1308 if (wbio
== NULL
|| BIO_method_type(wbio
) != BIO_TYPE_SOCKET
1309 || ((int)BIO_get_fd(wbio
, NULL
) != fd
)) {
1310 BIO
*bio
= BIO_new(BIO_s_socket());
1313 SSLerr(SSL_F_SSL_SET_RFD
, ERR_R_BUF_LIB
);
1316 BIO_set_fd(bio
, fd
, BIO_NOCLOSE
);
1317 SSL_set0_rbio(s
, bio
);
1320 SSL_set0_rbio(s
, wbio
);
1327 /* return length of latest Finished message we sent, copy to 'buf' */
1328 size_t SSL_get_finished(const SSL
*s
, void *buf
, size_t count
)
1332 if (s
->s3
!= NULL
) {
1333 ret
= s
->s3
->tmp
.finish_md_len
;
1336 memcpy(buf
, s
->s3
->tmp
.finish_md
, count
);
1341 /* return length of latest Finished message we expected, copy to 'buf' */
1342 size_t SSL_get_peer_finished(const SSL
*s
, void *buf
, size_t count
)
1346 if (s
->s3
!= NULL
) {
1347 ret
= s
->s3
->tmp
.peer_finish_md_len
;
1350 memcpy(buf
, s
->s3
->tmp
.peer_finish_md
, count
);
1355 int SSL_get_verify_mode(const SSL
*s
)
1357 return (s
->verify_mode
);
1360 int SSL_get_verify_depth(const SSL
*s
)
1362 return X509_VERIFY_PARAM_get_depth(s
->param
);
1365 int (*SSL_get_verify_callback(const SSL
*s
)) (int, X509_STORE_CTX
*) {
1366 return (s
->verify_callback
);
1369 int SSL_CTX_get_verify_mode(const SSL_CTX
*ctx
)
1371 return (ctx
->verify_mode
);
1374 int SSL_CTX_get_verify_depth(const SSL_CTX
*ctx
)
1376 return X509_VERIFY_PARAM_get_depth(ctx
->param
);
1379 int (*SSL_CTX_get_verify_callback(const SSL_CTX
*ctx
)) (int, X509_STORE_CTX
*) {
1380 return (ctx
->default_verify_callback
);
1383 void SSL_set_verify(SSL
*s
, int mode
,
1384 int (*callback
) (int ok
, X509_STORE_CTX
*ctx
))
1386 s
->verify_mode
= mode
;
1387 if (callback
!= NULL
)
1388 s
->verify_callback
= callback
;
1391 void SSL_set_verify_depth(SSL
*s
, int depth
)
1393 X509_VERIFY_PARAM_set_depth(s
->param
, depth
);
1396 void SSL_set_read_ahead(SSL
*s
, int yes
)
1398 RECORD_LAYER_set_read_ahead(&s
->rlayer
, yes
);
1401 int SSL_get_read_ahead(const SSL
*s
)
1403 return RECORD_LAYER_get_read_ahead(&s
->rlayer
);
1406 int SSL_pending(const SSL
*s
)
1408 size_t pending
= s
->method
->ssl_pending(s
);
1411 * SSL_pending cannot work properly if read-ahead is enabled
1412 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1413 * impossible to fix since SSL_pending cannot report errors that may be
1414 * observed while scanning the new data. (Note that SSL_pending() is
1415 * often used as a boolean value, so we'd better not return -1.)
1417 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1418 * we just return INT_MAX.
1420 return pending
< INT_MAX
? (int)pending
: INT_MAX
;
1423 int SSL_has_pending(const SSL
*s
)
1426 * Similar to SSL_pending() but returns a 1 to indicate that we have
1427 * unprocessed data available or 0 otherwise (as opposed to the number of
1428 * bytes available). Unlike SSL_pending() this will take into account
1429 * read_ahead data. A 1 return simply indicates that we have unprocessed
1430 * data. That data may not result in any application data, or we may fail
1431 * to parse the records for some reason.
1433 if (RECORD_LAYER_processed_read_pending(&s
->rlayer
))
1436 return RECORD_LAYER_read_pending(&s
->rlayer
);
1439 X509
*SSL_get_peer_certificate(const SSL
*s
)
1443 if ((s
== NULL
) || (s
->session
== NULL
))
1446 r
= s
->session
->peer
;
1456 STACK_OF(X509
) *SSL_get_peer_cert_chain(const SSL
*s
)
1460 if ((s
== NULL
) || (s
->session
== NULL
))
1463 r
= s
->session
->peer_chain
;
1466 * If we are a client, cert_chain includes the peer's own certificate; if
1467 * we are a server, it does not.
1474 * Now in theory, since the calling process own 't' it should be safe to
1475 * modify. We need to be able to read f without being hassled
1477 int SSL_copy_session_id(SSL
*t
, const SSL
*f
)
1480 /* Do we need to to SSL locking? */
1481 if (!SSL_set_session(t
, SSL_get_session(f
))) {
1486 * what if we are setup for one protocol version but want to talk another
1488 if (t
->method
!= f
->method
) {
1489 t
->method
->ssl_free(t
);
1490 t
->method
= f
->method
;
1491 if (t
->method
->ssl_new(t
) == 0)
1495 CRYPTO_UP_REF(&f
->cert
->references
, &i
, f
->cert
->lock
);
1496 ssl_cert_free(t
->cert
);
1498 if (!SSL_set_session_id_context(t
, f
->sid_ctx
, (int)f
->sid_ctx_length
)) {
1505 /* Fix this so it checks all the valid key/cert options */
1506 int SSL_CTX_check_private_key(const SSL_CTX
*ctx
)
1508 if ((ctx
== NULL
) || (ctx
->cert
->key
->x509
== NULL
)) {
1509 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1512 if (ctx
->cert
->key
->privatekey
== NULL
) {
1513 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1516 return (X509_check_private_key
1517 (ctx
->cert
->key
->x509
, ctx
->cert
->key
->privatekey
));
1520 /* Fix this function so that it takes an optional type parameter */
1521 int SSL_check_private_key(const SSL
*ssl
)
1524 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, ERR_R_PASSED_NULL_PARAMETER
);
1527 if (ssl
->cert
->key
->x509
== NULL
) {
1528 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_CERTIFICATE_ASSIGNED
);
1531 if (ssl
->cert
->key
->privatekey
== NULL
) {
1532 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY
, SSL_R_NO_PRIVATE_KEY_ASSIGNED
);
1535 return (X509_check_private_key(ssl
->cert
->key
->x509
,
1536 ssl
->cert
->key
->privatekey
));
1539 int SSL_waiting_for_async(SSL
*s
)
1547 int SSL_get_all_async_fds(SSL
*s
, OSSL_ASYNC_FD
*fds
, size_t *numfds
)
1549 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1553 return ASYNC_WAIT_CTX_get_all_fds(ctx
, fds
, numfds
);
1556 int SSL_get_changed_async_fds(SSL
*s
, OSSL_ASYNC_FD
*addfd
, size_t *numaddfds
,
1557 OSSL_ASYNC_FD
*delfd
, size_t *numdelfds
)
1559 ASYNC_WAIT_CTX
*ctx
= s
->waitctx
;
1563 return ASYNC_WAIT_CTX_get_changed_fds(ctx
, addfd
, numaddfds
, delfd
,
1567 int SSL_accept(SSL
*s
)
1569 if (s
->handshake_func
== NULL
) {
1570 /* Not properly initialized yet */
1571 SSL_set_accept_state(s
);
1574 return SSL_do_handshake(s
);
1577 int SSL_connect(SSL
*s
)
1579 if (s
->handshake_func
== NULL
) {
1580 /* Not properly initialized yet */
1581 SSL_set_connect_state(s
);
1584 return SSL_do_handshake(s
);
1587 long SSL_get_default_timeout(const SSL
*s
)
1589 return (s
->method
->get_timeout());
1592 static int ssl_start_async_job(SSL
*s
, struct ssl_async_args
*args
,
1593 int (*func
) (void *))
1596 if (s
->waitctx
== NULL
) {
1597 s
->waitctx
= ASYNC_WAIT_CTX_new();
1598 if (s
->waitctx
== NULL
)
1601 switch (ASYNC_start_job(&s
->job
, s
->waitctx
, &ret
, func
, args
,
1602 sizeof(struct ssl_async_args
))) {
1604 s
->rwstate
= SSL_NOTHING
;
1605 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, SSL_R_FAILED_TO_INIT_ASYNC
);
1608 s
->rwstate
= SSL_ASYNC_PAUSED
;
1611 s
->rwstate
= SSL_ASYNC_NO_JOBS
;
1617 s
->rwstate
= SSL_NOTHING
;
1618 SSLerr(SSL_F_SSL_START_ASYNC_JOB
, ERR_R_INTERNAL_ERROR
);
1619 /* Shouldn't happen */
1624 static int ssl_io_intern(void *vargs
)
1626 struct ssl_async_args
*args
;
1631 args
= (struct ssl_async_args
*)vargs
;
1635 switch (args
->type
) {
1637 return args
->f
.func_read(s
, buf
, num
, &s
->asyncrw
);
1639 return args
->f
.func_write(s
, buf
, num
, &s
->asyncrw
);
1641 return args
->f
.func_other(s
);
1646 int ssl_read_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1648 if (s
->handshake_func
== NULL
) {
1649 SSLerr(SSL_F_SSL_READ_INTERNAL
, SSL_R_UNINITIALIZED
);
1653 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1654 s
->rwstate
= SSL_NOTHING
;
1658 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1659 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
) {
1660 SSLerr(SSL_F_SSL_READ_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1664 * If we are a client and haven't received the ServerHello etc then we
1667 ossl_statem_check_finish_init(s
, 0);
1669 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1670 struct ssl_async_args args
;
1676 args
.type
= READFUNC
;
1677 args
.f
.func_read
= s
->method
->ssl_read
;
1679 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1680 *readbytes
= s
->asyncrw
;
1683 return s
->method
->ssl_read(s
, buf
, num
, readbytes
);
1687 int SSL_read(SSL
*s
, void *buf
, int num
)
1693 SSLerr(SSL_F_SSL_READ
, SSL_R_BAD_LENGTH
);
1697 ret
= ssl_read_internal(s
, buf
, (size_t)num
, &readbytes
);
1700 * The cast is safe here because ret should be <= INT_MAX because num is
1704 ret
= (int)readbytes
;
1709 int SSL_read_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1711 int ret
= ssl_read_internal(s
, buf
, num
, readbytes
);
1718 int SSL_read_early_data(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1723 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1724 return SSL_READ_EARLY_DATA_ERROR
;
1727 switch (s
->early_data_state
) {
1728 case SSL_EARLY_DATA_NONE
:
1729 if (!SSL_in_before(s
)) {
1730 SSLerr(SSL_F_SSL_READ_EARLY_DATA
,
1731 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1732 return SSL_READ_EARLY_DATA_ERROR
;
1736 case SSL_EARLY_DATA_ACCEPT_RETRY
:
1737 s
->early_data_state
= SSL_EARLY_DATA_ACCEPTING
;
1738 ret
= SSL_accept(s
);
1741 s
->early_data_state
= SSL_EARLY_DATA_ACCEPT_RETRY
;
1742 return SSL_READ_EARLY_DATA_ERROR
;
1746 case SSL_EARLY_DATA_READ_RETRY
:
1747 if (s
->ext
.early_data
== SSL_EARLY_DATA_ACCEPTED
) {
1748 s
->early_data_state
= SSL_EARLY_DATA_READING
;
1749 ret
= SSL_read_ex(s
, buf
, num
, readbytes
);
1751 * State machine will update early_data_state to
1752 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1755 if (ret
> 0 || (ret
<= 0 && s
->early_data_state
1756 != SSL_EARLY_DATA_FINISHED_READING
)) {
1757 s
->early_data_state
= SSL_EARLY_DATA_READ_RETRY
;
1758 return ret
> 0 ? SSL_READ_EARLY_DATA_SUCCESS
1759 : SSL_READ_EARLY_DATA_ERROR
;
1762 s
->early_data_state
= SSL_EARLY_DATA_FINISHED_READING
;
1765 return SSL_READ_EARLY_DATA_FINISH
;
1768 SSLerr(SSL_F_SSL_READ_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1769 return SSL_READ_EARLY_DATA_ERROR
;
1773 int SSL_get_early_data_status(const SSL
*s
)
1775 return s
->ext
.early_data
;
1778 static int ssl_peek_internal(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1780 if (s
->handshake_func
== NULL
) {
1781 SSLerr(SSL_F_SSL_PEEK_INTERNAL
, SSL_R_UNINITIALIZED
);
1785 if (s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) {
1788 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1789 struct ssl_async_args args
;
1795 args
.type
= READFUNC
;
1796 args
.f
.func_read
= s
->method
->ssl_peek
;
1798 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1799 *readbytes
= s
->asyncrw
;
1802 return s
->method
->ssl_peek(s
, buf
, num
, readbytes
);
1806 int SSL_peek(SSL
*s
, void *buf
, int num
)
1812 SSLerr(SSL_F_SSL_PEEK
, SSL_R_BAD_LENGTH
);
1816 ret
= ssl_peek_internal(s
, buf
, (size_t)num
, &readbytes
);
1819 * The cast is safe here because ret should be <= INT_MAX because num is
1823 ret
= (int)readbytes
;
1829 int SSL_peek_ex(SSL
*s
, void *buf
, size_t num
, size_t *readbytes
)
1831 int ret
= ssl_peek_internal(s
, buf
, num
, readbytes
);
1838 int ssl_write_internal(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1840 if (s
->handshake_func
== NULL
) {
1841 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_UNINITIALIZED
);
1845 if (s
->shutdown
& SSL_SENT_SHUTDOWN
) {
1846 s
->rwstate
= SSL_NOTHING
;
1847 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, SSL_R_PROTOCOL_IS_SHUTDOWN
);
1851 if (s
->early_data_state
== SSL_EARLY_DATA_CONNECT_RETRY
1852 || s
->early_data_state
== SSL_EARLY_DATA_ACCEPT_RETRY
1853 || s
->early_data_state
== SSL_EARLY_DATA_READ_RETRY
) {
1854 SSLerr(SSL_F_SSL_WRITE_INTERNAL
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1857 /* If we are a client and haven't sent the Finished we better do that */
1858 ossl_statem_check_finish_init(s
, 1);
1860 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1862 struct ssl_async_args args
;
1865 args
.buf
= (void *)buf
;
1867 args
.type
= WRITEFUNC
;
1868 args
.f
.func_write
= s
->method
->ssl_write
;
1870 ret
= ssl_start_async_job(s
, &args
, ssl_io_intern
);
1871 *written
= s
->asyncrw
;
1874 return s
->method
->ssl_write(s
, buf
, num
, written
);
1878 int SSL_write(SSL
*s
, const void *buf
, int num
)
1884 SSLerr(SSL_F_SSL_WRITE
, SSL_R_BAD_LENGTH
);
1888 ret
= ssl_write_internal(s
, buf
, (size_t)num
, &written
);
1891 * The cast is safe here because ret should be <= INT_MAX because num is
1900 int SSL_write_ex(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1902 int ret
= ssl_write_internal(s
, buf
, num
, written
);
1909 int SSL_write_early_data(SSL
*s
, const void *buf
, size_t num
, size_t *written
)
1911 int ret
, early_data_state
;
1913 switch (s
->early_data_state
) {
1914 case SSL_EARLY_DATA_NONE
:
1916 || !SSL_in_before(s
)
1917 || ((s
->session
== NULL
|| s
->session
->ext
.max_early_data
== 0)
1918 && (s
->psk_use_session_cb
== NULL
))) {
1919 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
,
1920 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1925 case SSL_EARLY_DATA_CONNECT_RETRY
:
1926 s
->early_data_state
= SSL_EARLY_DATA_CONNECTING
;
1927 ret
= SSL_connect(s
);
1930 s
->early_data_state
= SSL_EARLY_DATA_CONNECT_RETRY
;
1935 case SSL_EARLY_DATA_WRITE_RETRY
:
1936 s
->early_data_state
= SSL_EARLY_DATA_WRITING
;
1937 ret
= SSL_write_ex(s
, buf
, num
, written
);
1938 s
->early_data_state
= SSL_EARLY_DATA_WRITE_RETRY
;
1941 case SSL_EARLY_DATA_FINISHED_READING
:
1942 case SSL_EARLY_DATA_READ_RETRY
:
1943 early_data_state
= s
->early_data_state
;
1944 /* We are a server writing to an unauthenticated client */
1945 s
->early_data_state
= SSL_EARLY_DATA_UNAUTH_WRITING
;
1946 ret
= SSL_write_ex(s
, buf
, num
, written
);
1947 s
->early_data_state
= early_data_state
;
1951 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
1956 int SSL_shutdown(SSL
*s
)
1959 * Note that this function behaves differently from what one might
1960 * expect. Return values are 0 for no success (yet), 1 for success; but
1961 * calling it once is usually not enough, even if blocking I/O is used
1962 * (see ssl3_shutdown).
1965 if (s
->handshake_func
== NULL
) {
1966 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_UNINITIALIZED
);
1970 if (!SSL_in_init(s
)) {
1971 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
1972 struct ssl_async_args args
;
1975 args
.type
= OTHERFUNC
;
1976 args
.f
.func_other
= s
->method
->ssl_shutdown
;
1978 return ssl_start_async_job(s
, &args
, ssl_io_intern
);
1980 return s
->method
->ssl_shutdown(s
);
1983 SSLerr(SSL_F_SSL_SHUTDOWN
, SSL_R_SHUTDOWN_WHILE_IN_INIT
);
1988 int SSL_key_update(SSL
*s
, int updatetype
)
1991 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
1992 * negotiated, and that it is appropriate to call SSL_key_update() instead
1993 * of SSL_renegotiate().
1995 if (!SSL_IS_TLS13(s
)) {
1996 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_WRONG_SSL_VERSION
);
2000 if (updatetype
!= SSL_KEY_UPDATE_NOT_REQUESTED
2001 && updatetype
!= SSL_KEY_UPDATE_REQUESTED
) {
2002 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_INVALID_KEY_UPDATE_TYPE
);
2006 if (!SSL_is_init_finished(s
)) {
2007 SSLerr(SSL_F_SSL_KEY_UPDATE
, SSL_R_STILL_IN_INIT
);
2011 ossl_statem_set_in_init(s
, 1);
2012 s
->key_update
= updatetype
;
2016 int SSL_get_key_update_type(SSL
*s
)
2018 return s
->key_update
;
2021 int SSL_renegotiate(SSL
*s
)
2023 if (SSL_IS_TLS13(s
)) {
2024 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_WRONG_SSL_VERSION
);
2028 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2029 SSLerr(SSL_F_SSL_RENEGOTIATE
, SSL_R_NO_RENEGOTIATION
);
2036 return (s
->method
->ssl_renegotiate(s
));
2039 int SSL_renegotiate_abbreviated(SSL
*s
)
2041 if (SSL_IS_TLS13(s
)) {
2042 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_WRONG_SSL_VERSION
);
2046 if ((s
->options
& SSL_OP_NO_RENEGOTIATION
)) {
2047 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED
, SSL_R_NO_RENEGOTIATION
);
2054 return (s
->method
->ssl_renegotiate(s
));
2057 int SSL_renegotiate_pending(SSL
*s
)
2060 * becomes true when negotiation is requested; false again once a
2061 * handshake has finished
2063 return (s
->renegotiate
!= 0);
2066 long SSL_ctrl(SSL
*s
, int cmd
, long larg
, void *parg
)
2071 case SSL_CTRL_GET_READ_AHEAD
:
2072 return (RECORD_LAYER_get_read_ahead(&s
->rlayer
));
2073 case SSL_CTRL_SET_READ_AHEAD
:
2074 l
= RECORD_LAYER_get_read_ahead(&s
->rlayer
);
2075 RECORD_LAYER_set_read_ahead(&s
->rlayer
, larg
);
2078 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2079 s
->msg_callback_arg
= parg
;
2083 return (s
->mode
|= larg
);
2084 case SSL_CTRL_CLEAR_MODE
:
2085 return (s
->mode
&= ~larg
);
2086 case SSL_CTRL_GET_MAX_CERT_LIST
:
2087 return (long)(s
->max_cert_list
);
2088 case SSL_CTRL_SET_MAX_CERT_LIST
:
2091 l
= (long)s
->max_cert_list
;
2092 s
->max_cert_list
= (size_t)larg
;
2094 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2095 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2097 s
->max_send_fragment
= larg
;
2098 if (s
->max_send_fragment
< s
->split_send_fragment
)
2099 s
->split_send_fragment
= s
->max_send_fragment
;
2101 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2102 if ((size_t)larg
> s
->max_send_fragment
|| larg
== 0)
2104 s
->split_send_fragment
= larg
;
2106 case SSL_CTRL_SET_MAX_PIPELINES
:
2107 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2109 s
->max_pipelines
= larg
;
2111 RECORD_LAYER_set_read_ahead(&s
->rlayer
, 1);
2113 case SSL_CTRL_GET_RI_SUPPORT
:
2115 return s
->s3
->send_connection_binding
;
2118 case SSL_CTRL_CERT_FLAGS
:
2119 return (s
->cert
->cert_flags
|= larg
);
2120 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2121 return (s
->cert
->cert_flags
&= ~larg
);
2123 case SSL_CTRL_GET_RAW_CIPHERLIST
:
2125 if (s
->s3
->tmp
.ciphers_raw
== NULL
)
2127 *(unsigned char **)parg
= s
->s3
->tmp
.ciphers_raw
;
2128 return (int)s
->s3
->tmp
.ciphers_rawlen
;
2130 return TLS_CIPHER_LEN
;
2132 case SSL_CTRL_GET_EXTMS_SUPPORT
:
2133 if (!s
->session
|| SSL_in_init(s
) || ossl_statem_get_in_handshake(s
))
2135 if (s
->session
->flags
& SSL_SESS_FLAG_EXTMS
)
2139 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2140 return ssl_check_allowed_versions(larg
, s
->max_proto_version
)
2141 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2142 &s
->min_proto_version
);
2143 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2144 return s
->min_proto_version
;
2145 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2146 return ssl_check_allowed_versions(s
->min_proto_version
, larg
)
2147 && ssl_set_version_bound(s
->ctx
->method
->version
, (int)larg
,
2148 &s
->max_proto_version
);
2149 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2150 return s
->max_proto_version
;
2152 return (s
->method
->ssl_ctrl(s
, cmd
, larg
, parg
));
2156 long SSL_callback_ctrl(SSL
*s
, int cmd
, void (*fp
) (void))
2159 case SSL_CTRL_SET_MSG_CALLBACK
:
2160 s
->msg_callback
= (void (*)
2161 (int write_p
, int version
, int content_type
,
2162 const void *buf
, size_t len
, SSL
*ssl
,
2167 return (s
->method
->ssl_callback_ctrl(s
, cmd
, fp
));
2171 LHASH_OF(SSL_SESSION
) *SSL_CTX_sessions(SSL_CTX
*ctx
)
2173 return ctx
->sessions
;
2176 long SSL_CTX_ctrl(SSL_CTX
*ctx
, int cmd
, long larg
, void *parg
)
2179 /* For some cases with ctx == NULL perform syntax checks */
2182 #ifndef OPENSSL_NO_EC
2183 case SSL_CTRL_SET_GROUPS_LIST
:
2184 return tls1_set_groups_list(NULL
, NULL
, parg
);
2186 case SSL_CTRL_SET_SIGALGS_LIST
:
2187 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST
:
2188 return tls1_set_sigalgs_list(NULL
, parg
, 0);
2195 case SSL_CTRL_GET_READ_AHEAD
:
2196 return (ctx
->read_ahead
);
2197 case SSL_CTRL_SET_READ_AHEAD
:
2198 l
= ctx
->read_ahead
;
2199 ctx
->read_ahead
= larg
;
2202 case SSL_CTRL_SET_MSG_CALLBACK_ARG
:
2203 ctx
->msg_callback_arg
= parg
;
2206 case SSL_CTRL_GET_MAX_CERT_LIST
:
2207 return (long)(ctx
->max_cert_list
);
2208 case SSL_CTRL_SET_MAX_CERT_LIST
:
2211 l
= (long)ctx
->max_cert_list
;
2212 ctx
->max_cert_list
= (size_t)larg
;
2215 case SSL_CTRL_SET_SESS_CACHE_SIZE
:
2218 l
= (long)ctx
->session_cache_size
;
2219 ctx
->session_cache_size
= (size_t)larg
;
2221 case SSL_CTRL_GET_SESS_CACHE_SIZE
:
2222 return (long)(ctx
->session_cache_size
);
2223 case SSL_CTRL_SET_SESS_CACHE_MODE
:
2224 l
= ctx
->session_cache_mode
;
2225 ctx
->session_cache_mode
= larg
;
2227 case SSL_CTRL_GET_SESS_CACHE_MODE
:
2228 return (ctx
->session_cache_mode
);
2230 case SSL_CTRL_SESS_NUMBER
:
2231 return (lh_SSL_SESSION_num_items(ctx
->sessions
));
2232 case SSL_CTRL_SESS_CONNECT
:
2233 return (ctx
->stats
.sess_connect
);
2234 case SSL_CTRL_SESS_CONNECT_GOOD
:
2235 return (ctx
->stats
.sess_connect_good
);
2236 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE
:
2237 return (ctx
->stats
.sess_connect_renegotiate
);
2238 case SSL_CTRL_SESS_ACCEPT
:
2239 return (ctx
->stats
.sess_accept
);
2240 case SSL_CTRL_SESS_ACCEPT_GOOD
:
2241 return (ctx
->stats
.sess_accept_good
);
2242 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE
:
2243 return (ctx
->stats
.sess_accept_renegotiate
);
2244 case SSL_CTRL_SESS_HIT
:
2245 return (ctx
->stats
.sess_hit
);
2246 case SSL_CTRL_SESS_CB_HIT
:
2247 return (ctx
->stats
.sess_cb_hit
);
2248 case SSL_CTRL_SESS_MISSES
:
2249 return (ctx
->stats
.sess_miss
);
2250 case SSL_CTRL_SESS_TIMEOUTS
:
2251 return (ctx
->stats
.sess_timeout
);
2252 case SSL_CTRL_SESS_CACHE_FULL
:
2253 return (ctx
->stats
.sess_cache_full
);
2255 return (ctx
->mode
|= larg
);
2256 case SSL_CTRL_CLEAR_MODE
:
2257 return (ctx
->mode
&= ~larg
);
2258 case SSL_CTRL_SET_MAX_SEND_FRAGMENT
:
2259 if (larg
< 512 || larg
> SSL3_RT_MAX_PLAIN_LENGTH
)
2261 ctx
->max_send_fragment
= larg
;
2262 if (ctx
->max_send_fragment
< ctx
->split_send_fragment
)
2263 ctx
->split_send_fragment
= ctx
->max_send_fragment
;
2265 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT
:
2266 if ((size_t)larg
> ctx
->max_send_fragment
|| larg
== 0)
2268 ctx
->split_send_fragment
= larg
;
2270 case SSL_CTRL_SET_MAX_PIPELINES
:
2271 if (larg
< 1 || larg
> SSL_MAX_PIPELINES
)
2273 ctx
->max_pipelines
= larg
;
2275 case SSL_CTRL_CERT_FLAGS
:
2276 return (ctx
->cert
->cert_flags
|= larg
);
2277 case SSL_CTRL_CLEAR_CERT_FLAGS
:
2278 return (ctx
->cert
->cert_flags
&= ~larg
);
2279 case SSL_CTRL_SET_MIN_PROTO_VERSION
:
2280 return ssl_check_allowed_versions(larg
, ctx
->max_proto_version
)
2281 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2282 &ctx
->min_proto_version
);
2283 case SSL_CTRL_GET_MIN_PROTO_VERSION
:
2284 return ctx
->min_proto_version
;
2285 case SSL_CTRL_SET_MAX_PROTO_VERSION
:
2286 return ssl_check_allowed_versions(ctx
->min_proto_version
, larg
)
2287 && ssl_set_version_bound(ctx
->method
->version
, (int)larg
,
2288 &ctx
->max_proto_version
);
2289 case SSL_CTRL_GET_MAX_PROTO_VERSION
:
2290 return ctx
->max_proto_version
;
2292 return (ctx
->method
->ssl_ctx_ctrl(ctx
, cmd
, larg
, parg
));
2296 long SSL_CTX_callback_ctrl(SSL_CTX
*ctx
, int cmd
, void (*fp
) (void))
2299 case SSL_CTRL_SET_MSG_CALLBACK
:
2300 ctx
->msg_callback
= (void (*)
2301 (int write_p
, int version
, int content_type
,
2302 const void *buf
, size_t len
, SSL
*ssl
,
2307 return (ctx
->method
->ssl_ctx_callback_ctrl(ctx
, cmd
, fp
));
2311 int ssl_cipher_id_cmp(const SSL_CIPHER
*a
, const SSL_CIPHER
*b
)
2320 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER
*const *ap
,
2321 const SSL_CIPHER
*const *bp
)
2323 if ((*ap
)->id
> (*bp
)->id
)
2325 if ((*ap
)->id
< (*bp
)->id
)
2330 /** return a STACK of the ciphers available for the SSL and in order of
2332 STACK_OF(SSL_CIPHER
) *SSL_get_ciphers(const SSL
*s
)
2335 if (s
->cipher_list
!= NULL
) {
2336 return (s
->cipher_list
);
2337 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list
!= NULL
)) {
2338 return (s
->ctx
->cipher_list
);
2344 STACK_OF(SSL_CIPHER
) *SSL_get_client_ciphers(const SSL
*s
)
2346 if ((s
== NULL
) || (s
->session
== NULL
) || !s
->server
)
2348 return s
->session
->ciphers
;
2351 STACK_OF(SSL_CIPHER
) *SSL_get1_supported_ciphers(SSL
*s
)
2353 STACK_OF(SSL_CIPHER
) *sk
= NULL
, *ciphers
;
2355 ciphers
= SSL_get_ciphers(s
);
2358 ssl_set_client_disabled(s
);
2359 for (i
= 0; i
< sk_SSL_CIPHER_num(ciphers
); i
++) {
2360 const SSL_CIPHER
*c
= sk_SSL_CIPHER_value(ciphers
, i
);
2361 if (!ssl_cipher_disabled(s
, c
, SSL_SECOP_CIPHER_SUPPORTED
, 0)) {
2363 sk
= sk_SSL_CIPHER_new_null();
2366 if (!sk_SSL_CIPHER_push(sk
, c
)) {
2367 sk_SSL_CIPHER_free(sk
);
2375 /** return a STACK of the ciphers available for the SSL and in order of
2377 STACK_OF(SSL_CIPHER
) *ssl_get_ciphers_by_id(SSL
*s
)
2380 if (s
->cipher_list_by_id
!= NULL
) {
2381 return (s
->cipher_list_by_id
);
2382 } else if ((s
->ctx
!= NULL
) && (s
->ctx
->cipher_list_by_id
!= NULL
)) {
2383 return (s
->ctx
->cipher_list_by_id
);
2389 /** The old interface to get the same thing as SSL_get_ciphers() */
2390 const char *SSL_get_cipher_list(const SSL
*s
, int n
)
2392 const SSL_CIPHER
*c
;
2393 STACK_OF(SSL_CIPHER
) *sk
;
2397 sk
= SSL_get_ciphers(s
);
2398 if ((sk
== NULL
) || (sk_SSL_CIPHER_num(sk
) <= n
))
2400 c
= sk_SSL_CIPHER_value(sk
, n
);
2406 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2408 STACK_OF(SSL_CIPHER
) *SSL_CTX_get_ciphers(const SSL_CTX
*ctx
)
2411 return ctx
->cipher_list
;
2415 /** specify the ciphers to be used by default by the SSL_CTX */
2416 int SSL_CTX_set_cipher_list(SSL_CTX
*ctx
, const char *str
)
2418 STACK_OF(SSL_CIPHER
) *sk
;
2420 sk
= ssl_create_cipher_list(ctx
->method
, &ctx
->cipher_list
,
2421 &ctx
->cipher_list_by_id
, str
, ctx
->cert
);
2423 * ssl_create_cipher_list may return an empty stack if it was unable to
2424 * find a cipher matching the given rule string (for example if the rule
2425 * string specifies a cipher which has been disabled). This is not an
2426 * error as far as ssl_create_cipher_list is concerned, and hence
2427 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2431 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2432 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2438 /** specify the ciphers to be used by the SSL */
2439 int SSL_set_cipher_list(SSL
*s
, const char *str
)
2441 STACK_OF(SSL_CIPHER
) *sk
;
2443 sk
= ssl_create_cipher_list(s
->ctx
->method
, &s
->cipher_list
,
2444 &s
->cipher_list_by_id
, str
, s
->cert
);
2445 /* see comment in SSL_CTX_set_cipher_list */
2448 else if (sk_SSL_CIPHER_num(sk
) == 0) {
2449 SSLerr(SSL_F_SSL_SET_CIPHER_LIST
, SSL_R_NO_CIPHER_MATCH
);
2455 char *SSL_get_shared_ciphers(const SSL
*s
, char *buf
, int len
)
2458 STACK_OF(SSL_CIPHER
) *sk
;
2459 const SSL_CIPHER
*c
;
2462 if ((s
->session
== NULL
) || (s
->session
->ciphers
== NULL
) || (len
< 2))
2466 sk
= s
->session
->ciphers
;
2468 if (sk_SSL_CIPHER_num(sk
) == 0)
2471 for (i
= 0; i
< sk_SSL_CIPHER_num(sk
); i
++) {
2474 c
= sk_SSL_CIPHER_value(sk
, i
);
2475 n
= strlen(c
->name
);
2491 /** return a servername extension value if provided in Client Hello, or NULL.
2492 * So far, only host_name types are defined (RFC 3546).
2495 const char *SSL_get_servername(const SSL
*s
, const int type
)
2497 if (type
!= TLSEXT_NAMETYPE_host_name
)
2500 return s
->session
&& !s
->ext
.hostname
?
2501 s
->session
->ext
.hostname
: s
->ext
.hostname
;
2504 int SSL_get_servername_type(const SSL
*s
)
2507 && (!s
->ext
.hostname
? s
->session
->
2508 ext
.hostname
: s
->ext
.hostname
))
2509 return TLSEXT_NAMETYPE_host_name
;
2514 * SSL_select_next_proto implements the standard protocol selection. It is
2515 * expected that this function is called from the callback set by
2516 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2517 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2518 * not included in the length. A byte string of length 0 is invalid. No byte
2519 * string may be truncated. The current, but experimental algorithm for
2520 * selecting the protocol is: 1) If the server doesn't support NPN then this
2521 * is indicated to the callback. In this case, the client application has to
2522 * abort the connection or have a default application level protocol. 2) If
2523 * the server supports NPN, but advertises an empty list then the client
2524 * selects the first protocol in its list, but indicates via the API that this
2525 * fallback case was enacted. 3) Otherwise, the client finds the first
2526 * protocol in the server's list that it supports and selects this protocol.
2527 * This is because it's assumed that the server has better information about
2528 * which protocol a client should use. 4) If the client doesn't support any
2529 * of the server's advertised protocols, then this is treated the same as
2530 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2531 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2533 int SSL_select_next_proto(unsigned char **out
, unsigned char *outlen
,
2534 const unsigned char *server
,
2535 unsigned int server_len
,
2536 const unsigned char *client
, unsigned int client_len
)
2539 const unsigned char *result
;
2540 int status
= OPENSSL_NPN_UNSUPPORTED
;
2543 * For each protocol in server preference order, see if we support it.
2545 for (i
= 0; i
< server_len
;) {
2546 for (j
= 0; j
< client_len
;) {
2547 if (server
[i
] == client
[j
] &&
2548 memcmp(&server
[i
+ 1], &client
[j
+ 1], server
[i
]) == 0) {
2549 /* We found a match */
2550 result
= &server
[i
];
2551 status
= OPENSSL_NPN_NEGOTIATED
;
2561 /* There's no overlap between our protocols and the server's list. */
2563 status
= OPENSSL_NPN_NO_OVERLAP
;
2566 *out
= (unsigned char *)result
+ 1;
2567 *outlen
= result
[0];
2571 #ifndef OPENSSL_NO_NEXTPROTONEG
2573 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2574 * client's requested protocol for this connection and returns 0. If the
2575 * client didn't request any protocol, then *data is set to NULL. Note that
2576 * the client can request any protocol it chooses. The value returned from
2577 * this function need not be a member of the list of supported protocols
2578 * provided by the callback.
2580 void SSL_get0_next_proto_negotiated(const SSL
*s
, const unsigned char **data
,
2587 *len
= (unsigned int)s
->ext
.npn_len
;
2592 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2593 * a TLS server needs a list of supported protocols for Next Protocol
2594 * Negotiation. The returned list must be in wire format. The list is
2595 * returned by setting |out| to point to it and |outlen| to its length. This
2596 * memory will not be modified, but one should assume that the SSL* keeps a
2597 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2598 * wishes to advertise. Otherwise, no such extension will be included in the
2601 void SSL_CTX_set_npn_advertised_cb(SSL_CTX
*ctx
,
2602 SSL_CTX_npn_advertised_cb_func cb
,
2605 ctx
->ext
.npn_advertised_cb
= cb
;
2606 ctx
->ext
.npn_advertised_cb_arg
= arg
;
2610 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2611 * client needs to select a protocol from the server's provided list. |out|
2612 * must be set to point to the selected protocol (which may be within |in|).
2613 * The length of the protocol name must be written into |outlen|. The
2614 * server's advertised protocols are provided in |in| and |inlen|. The
2615 * callback can assume that |in| is syntactically valid. The client must
2616 * select a protocol. It is fatal to the connection if this callback returns
2617 * a value other than SSL_TLSEXT_ERR_OK.
2619 void SSL_CTX_set_npn_select_cb(SSL_CTX
*ctx
,
2620 SSL_CTX_npn_select_cb_func cb
,
2623 ctx
->ext
.npn_select_cb
= cb
;
2624 ctx
->ext
.npn_select_cb_arg
= arg
;
2629 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2630 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2631 * length-prefixed strings). Returns 0 on success.
2633 int SSL_CTX_set_alpn_protos(SSL_CTX
*ctx
, const unsigned char *protos
,
2634 unsigned int protos_len
)
2636 OPENSSL_free(ctx
->ext
.alpn
);
2637 ctx
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2638 if (ctx
->ext
.alpn
== NULL
) {
2639 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2642 ctx
->ext
.alpn_len
= protos_len
;
2648 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2649 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2650 * length-prefixed strings). Returns 0 on success.
2652 int SSL_set_alpn_protos(SSL
*ssl
, const unsigned char *protos
,
2653 unsigned int protos_len
)
2655 OPENSSL_free(ssl
->ext
.alpn
);
2656 ssl
->ext
.alpn
= OPENSSL_memdup(protos
, protos_len
);
2657 if (ssl
->ext
.alpn
== NULL
) {
2658 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS
, ERR_R_MALLOC_FAILURE
);
2661 ssl
->ext
.alpn_len
= protos_len
;
2667 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2668 * called during ClientHello processing in order to select an ALPN protocol
2669 * from the client's list of offered protocols.
2671 void SSL_CTX_set_alpn_select_cb(SSL_CTX
*ctx
,
2672 SSL_CTX_alpn_select_cb_func cb
,
2675 ctx
->ext
.alpn_select_cb
= cb
;
2676 ctx
->ext
.alpn_select_cb_arg
= arg
;
2680 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2681 * On return it sets |*data| to point to |*len| bytes of protocol name
2682 * (not including the leading length-prefix byte). If the server didn't
2683 * respond with a negotiated protocol then |*len| will be zero.
2685 void SSL_get0_alpn_selected(const SSL
*ssl
, const unsigned char **data
,
2690 *data
= ssl
->s3
->alpn_selected
;
2694 *len
= (unsigned int)ssl
->s3
->alpn_selected_len
;
2697 int SSL_export_keying_material(SSL
*s
, unsigned char *out
, size_t olen
,
2698 const char *label
, size_t llen
,
2699 const unsigned char *context
, size_t contextlen
,
2702 if (s
->version
< TLS1_VERSION
&& s
->version
!= DTLS1_BAD_VER
)
2705 return s
->method
->ssl3_enc
->export_keying_material(s
, out
, olen
, label
,
2707 contextlen
, use_context
);
2710 static unsigned long ssl_session_hash(const SSL_SESSION
*a
)
2712 const unsigned char *session_id
= a
->session_id
;
2714 unsigned char tmp_storage
[4];
2716 if (a
->session_id_length
< sizeof(tmp_storage
)) {
2717 memset(tmp_storage
, 0, sizeof(tmp_storage
));
2718 memcpy(tmp_storage
, a
->session_id
, a
->session_id_length
);
2719 session_id
= tmp_storage
;
2723 ((unsigned long)session_id
[0]) |
2724 ((unsigned long)session_id
[1] << 8L) |
2725 ((unsigned long)session_id
[2] << 16L) |
2726 ((unsigned long)session_id
[3] << 24L);
2731 * NB: If this function (or indeed the hash function which uses a sort of
2732 * coarser function than this one) is changed, ensure
2733 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2734 * being able to construct an SSL_SESSION that will collide with any existing
2735 * session with a matching session ID.
2737 static int ssl_session_cmp(const SSL_SESSION
*a
, const SSL_SESSION
*b
)
2739 if (a
->ssl_version
!= b
->ssl_version
)
2741 if (a
->session_id_length
!= b
->session_id_length
)
2743 return (memcmp(a
->session_id
, b
->session_id
, a
->session_id_length
));
2747 * These wrapper functions should remain rather than redeclaring
2748 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2749 * variable. The reason is that the functions aren't static, they're exposed
2753 SSL_CTX
*SSL_CTX_new(const SSL_METHOD
*meth
)
2755 SSL_CTX
*ret
= NULL
;
2758 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_NULL_SSL_METHOD_PASSED
);
2762 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS
, NULL
))
2765 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2766 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS
);
2769 ret
= OPENSSL_zalloc(sizeof(*ret
));
2774 ret
->min_proto_version
= 0;
2775 ret
->max_proto_version
= 0;
2776 ret
->session_cache_mode
= SSL_SESS_CACHE_SERVER
;
2777 ret
->session_cache_size
= SSL_SESSION_CACHE_MAX_SIZE_DEFAULT
;
2778 /* We take the system default. */
2779 ret
->session_timeout
= meth
->get_timeout();
2780 ret
->references
= 1;
2781 ret
->lock
= CRYPTO_THREAD_lock_new();
2782 if (ret
->lock
== NULL
) {
2783 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2787 ret
->max_cert_list
= SSL_MAX_CERT_LIST_DEFAULT
;
2788 ret
->verify_mode
= SSL_VERIFY_NONE
;
2789 if ((ret
->cert
= ssl_cert_new()) == NULL
)
2792 ret
->sessions
= lh_SSL_SESSION_new(ssl_session_hash
, ssl_session_cmp
);
2793 if (ret
->sessions
== NULL
)
2795 ret
->cert_store
= X509_STORE_new();
2796 if (ret
->cert_store
== NULL
)
2798 #ifndef OPENSSL_NO_CT
2799 ret
->ctlog_store
= CTLOG_STORE_new();
2800 if (ret
->ctlog_store
== NULL
)
2803 if (!ssl_create_cipher_list(ret
->method
,
2804 &ret
->cipher_list
, &ret
->cipher_list_by_id
,
2805 SSL_DEFAULT_CIPHER_LIST
, ret
->cert
)
2806 || sk_SSL_CIPHER_num(ret
->cipher_list
) <= 0) {
2807 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_LIBRARY_HAS_NO_CIPHERS
);
2811 ret
->param
= X509_VERIFY_PARAM_new();
2812 if (ret
->param
== NULL
)
2815 if ((ret
->md5
= EVP_get_digestbyname("ssl3-md5")) == NULL
) {
2816 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES
);
2819 if ((ret
->sha1
= EVP_get_digestbyname("ssl3-sha1")) == NULL
) {
2820 SSLerr(SSL_F_SSL_CTX_NEW
, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES
);
2824 if ((ret
->ca_names
= sk_X509_NAME_new_null()) == NULL
)
2827 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, ret
, &ret
->ex_data
))
2830 /* No compression for DTLS */
2831 if (!(meth
->ssl3_enc
->enc_flags
& SSL_ENC_FLAG_DTLS
))
2832 ret
->comp_methods
= SSL_COMP_get_compression_methods();
2834 ret
->max_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2835 ret
->split_send_fragment
= SSL3_RT_MAX_PLAIN_LENGTH
;
2837 /* Setup RFC5077 ticket keys */
2838 if ((RAND_bytes(ret
->ext
.tick_key_name
,
2839 sizeof(ret
->ext
.tick_key_name
)) <= 0)
2840 || (RAND_bytes(ret
->ext
.tick_hmac_key
,
2841 sizeof(ret
->ext
.tick_hmac_key
)) <= 0)
2842 || (RAND_bytes(ret
->ext
.tick_aes_key
,
2843 sizeof(ret
->ext
.tick_aes_key
)) <= 0))
2844 ret
->options
|= SSL_OP_NO_TICKET
;
2846 #ifndef OPENSSL_NO_SRP
2847 if (!SSL_CTX_SRP_CTX_init(ret
))
2850 #ifndef OPENSSL_NO_ENGINE
2851 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2852 # define eng_strx(x) #x
2853 # define eng_str(x) eng_strx(x)
2854 /* Use specific client engine automatically... ignore errors */
2857 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2860 ENGINE_load_builtin_engines();
2861 eng
= ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO
));
2863 if (!eng
|| !SSL_CTX_set_client_cert_engine(ret
, eng
))
2869 * Default is to connect to non-RI servers. When RI is more widely
2870 * deployed might change this.
2872 ret
->options
|= SSL_OP_LEGACY_SERVER_CONNECT
;
2874 * Disable compression by default to prevent CRIME. Applications can
2875 * re-enable compression by configuring
2876 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2877 * or by using the SSL_CONF library.
2879 ret
->options
|= SSL_OP_NO_COMPRESSION
;
2881 ret
->ext
.status_type
= TLSEXT_STATUSTYPE_nothing
;
2884 * Default max early data is a fully loaded single record. Could be split
2885 * across multiple records in practice
2887 ret
->max_early_data
= SSL3_RT_MAX_PLAIN_LENGTH
;
2891 SSLerr(SSL_F_SSL_CTX_NEW
, ERR_R_MALLOC_FAILURE
);
2897 int SSL_CTX_up_ref(SSL_CTX
*ctx
)
2901 if (CRYPTO_UP_REF(&ctx
->references
, &i
, ctx
->lock
) <= 0)
2904 REF_PRINT_COUNT("SSL_CTX", ctx
);
2905 REF_ASSERT_ISNT(i
< 2);
2906 return ((i
> 1) ? 1 : 0);
2909 void SSL_CTX_free(SSL_CTX
*a
)
2916 CRYPTO_DOWN_REF(&a
->references
, &i
, a
->lock
);
2917 REF_PRINT_COUNT("SSL_CTX", a
);
2920 REF_ASSERT_ISNT(i
< 0);
2922 X509_VERIFY_PARAM_free(a
->param
);
2923 dane_ctx_final(&a
->dane
);
2926 * Free internal session cache. However: the remove_cb() may reference
2927 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2928 * after the sessions were flushed.
2929 * As the ex_data handling routines might also touch the session cache,
2930 * the most secure solution seems to be: empty (flush) the cache, then
2931 * free ex_data, then finally free the cache.
2932 * (See ticket [openssl.org #212].)
2934 if (a
->sessions
!= NULL
)
2935 SSL_CTX_flush_sessions(a
, 0);
2937 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX
, a
, &a
->ex_data
);
2938 lh_SSL_SESSION_free(a
->sessions
);
2939 X509_STORE_free(a
->cert_store
);
2940 #ifndef OPENSSL_NO_CT
2941 CTLOG_STORE_free(a
->ctlog_store
);
2943 sk_SSL_CIPHER_free(a
->cipher_list
);
2944 sk_SSL_CIPHER_free(a
->cipher_list_by_id
);
2945 ssl_cert_free(a
->cert
);
2946 sk_X509_NAME_pop_free(a
->ca_names
, X509_NAME_free
);
2947 sk_X509_pop_free(a
->extra_certs
, X509_free
);
2948 a
->comp_methods
= NULL
;
2949 #ifndef OPENSSL_NO_SRTP
2950 sk_SRTP_PROTECTION_PROFILE_free(a
->srtp_profiles
);
2952 #ifndef OPENSSL_NO_SRP
2953 SSL_CTX_SRP_CTX_free(a
);
2955 #ifndef OPENSSL_NO_ENGINE
2956 ENGINE_finish(a
->client_cert_engine
);
2959 #ifndef OPENSSL_NO_EC
2960 OPENSSL_free(a
->ext
.ecpointformats
);
2961 OPENSSL_free(a
->ext
.supportedgroups
);
2963 OPENSSL_free(a
->ext
.alpn
);
2965 CRYPTO_THREAD_lock_free(a
->lock
);
2970 void SSL_CTX_set_default_passwd_cb(SSL_CTX
*ctx
, pem_password_cb
*cb
)
2972 ctx
->default_passwd_callback
= cb
;
2975 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX
*ctx
, void *u
)
2977 ctx
->default_passwd_callback_userdata
= u
;
2980 pem_password_cb
*SSL_CTX_get_default_passwd_cb(SSL_CTX
*ctx
)
2982 return ctx
->default_passwd_callback
;
2985 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX
*ctx
)
2987 return ctx
->default_passwd_callback_userdata
;
2990 void SSL_set_default_passwd_cb(SSL
*s
, pem_password_cb
*cb
)
2992 s
->default_passwd_callback
= cb
;
2995 void SSL_set_default_passwd_cb_userdata(SSL
*s
, void *u
)
2997 s
->default_passwd_callback_userdata
= u
;
3000 pem_password_cb
*SSL_get_default_passwd_cb(SSL
*s
)
3002 return s
->default_passwd_callback
;
3005 void *SSL_get_default_passwd_cb_userdata(SSL
*s
)
3007 return s
->default_passwd_callback_userdata
;
3010 void SSL_CTX_set_cert_verify_callback(SSL_CTX
*ctx
,
3011 int (*cb
) (X509_STORE_CTX
*, void *),
3014 ctx
->app_verify_callback
= cb
;
3015 ctx
->app_verify_arg
= arg
;
3018 void SSL_CTX_set_verify(SSL_CTX
*ctx
, int mode
,
3019 int (*cb
) (int, X509_STORE_CTX
*))
3021 ctx
->verify_mode
= mode
;
3022 ctx
->default_verify_callback
= cb
;
3025 void SSL_CTX_set_verify_depth(SSL_CTX
*ctx
, int depth
)
3027 X509_VERIFY_PARAM_set_depth(ctx
->param
, depth
);
3030 void SSL_CTX_set_cert_cb(SSL_CTX
*c
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3032 ssl_cert_set_cert_cb(c
->cert
, cb
, arg
);
3035 void SSL_set_cert_cb(SSL
*s
, int (*cb
) (SSL
*ssl
, void *arg
), void *arg
)
3037 ssl_cert_set_cert_cb(s
->cert
, cb
, arg
);
3040 void ssl_set_masks(SSL
*s
)
3043 uint32_t *pvalid
= s
->s3
->tmp
.valid_flags
;
3044 int rsa_enc
, rsa_sign
, dh_tmp
, dsa_sign
;
3045 unsigned long mask_k
, mask_a
;
3046 #ifndef OPENSSL_NO_EC
3047 int have_ecc_cert
, ecdsa_ok
;
3052 #ifndef OPENSSL_NO_DH
3053 dh_tmp
= (c
->dh_tmp
!= NULL
|| c
->dh_tmp_cb
!= NULL
|| c
->dh_tmp_auto
);
3058 rsa_enc
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3059 rsa_sign
= pvalid
[SSL_PKEY_RSA
] & CERT_PKEY_VALID
;
3060 dsa_sign
= pvalid
[SSL_PKEY_DSA_SIGN
] & CERT_PKEY_VALID
;
3061 #ifndef OPENSSL_NO_EC
3062 have_ecc_cert
= pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_VALID
;
3068 fprintf(stderr
, "dht=%d re=%d rs=%d ds=%d\n",
3069 dh_tmp
, rsa_enc
, rsa_sign
, dsa_sign
);
3072 #ifndef OPENSSL_NO_GOST
3073 if (ssl_has_cert(s
, SSL_PKEY_GOST12_512
)) {
3074 mask_k
|= SSL_kGOST
;
3075 mask_a
|= SSL_aGOST12
;
3077 if (ssl_has_cert(s
, SSL_PKEY_GOST12_256
)) {
3078 mask_k
|= SSL_kGOST
;
3079 mask_a
|= SSL_aGOST12
;
3081 if (ssl_has_cert(s
, SSL_PKEY_GOST01
)) {
3082 mask_k
|= SSL_kGOST
;
3083 mask_a
|= SSL_aGOST01
;
3093 if (rsa_enc
|| rsa_sign
) {
3101 mask_a
|= SSL_aNULL
;
3104 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3105 * depending on the key usage extension.
3107 #ifndef OPENSSL_NO_EC
3108 if (have_ecc_cert
) {
3110 ex_kusage
= X509_get_key_usage(c
->pkeys
[SSL_PKEY_ECC
].x509
);
3111 ecdsa_ok
= ex_kusage
& X509v3_KU_DIGITAL_SIGNATURE
;
3112 if (!(pvalid
[SSL_PKEY_ECC
] & CERT_PKEY_SIGN
))
3115 mask_a
|= SSL_aECDSA
;
3117 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3118 if (!(mask_a
& SSL_aECDSA
) && ssl_has_cert(s
, SSL_PKEY_ED25519
)
3119 && pvalid
[SSL_PKEY_ED25519
] & CERT_PKEY_EXPLICIT_SIGN
3120 && TLS1_get_version(s
) == TLS1_2_VERSION
)
3121 mask_a
|= SSL_aECDSA
;
3124 #ifndef OPENSSL_NO_EC
3125 mask_k
|= SSL_kECDHE
;
3128 #ifndef OPENSSL_NO_PSK
3131 if (mask_k
& SSL_kRSA
)
3132 mask_k
|= SSL_kRSAPSK
;
3133 if (mask_k
& SSL_kDHE
)
3134 mask_k
|= SSL_kDHEPSK
;
3135 if (mask_k
& SSL_kECDHE
)
3136 mask_k
|= SSL_kECDHEPSK
;
3139 s
->s3
->tmp
.mask_k
= mask_k
;
3140 s
->s3
->tmp
.mask_a
= mask_a
;
3143 #ifndef OPENSSL_NO_EC
3145 int ssl_check_srvr_ecc_cert_and_alg(X509
*x
, SSL
*s
)
3147 if (s
->s3
->tmp
.new_cipher
->algorithm_auth
& SSL_aECDSA
) {
3148 /* key usage, if present, must allow signing */
3149 if (!(X509_get_key_usage(x
) & X509v3_KU_DIGITAL_SIGNATURE
)) {
3150 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG
,
3151 SSL_R_ECC_CERT_NOT_FOR_SIGNING
);
3155 return 1; /* all checks are ok */
3160 int ssl_get_server_cert_serverinfo(SSL
*s
, const unsigned char **serverinfo
,
3161 size_t *serverinfo_length
)
3163 CERT_PKEY
*cpk
= s
->s3
->tmp
.cert
;
3164 *serverinfo_length
= 0;
3166 if (cpk
== NULL
|| cpk
->serverinfo
== NULL
)
3169 *serverinfo
= cpk
->serverinfo
;
3170 *serverinfo_length
= cpk
->serverinfo_length
;
3174 void ssl_update_cache(SSL
*s
, int mode
)
3179 * If the session_id_length is 0, we are not supposed to cache it, and it
3180 * would be rather hard to do anyway :-)
3182 if (s
->session
->session_id_length
== 0)
3185 i
= s
->session_ctx
->session_cache_mode
;
3187 && (!s
->hit
|| SSL_IS_TLS13(s
))
3188 && ((i
& SSL_SESS_CACHE_NO_INTERNAL_STORE
) != 0
3189 || SSL_CTX_add_session(s
->session_ctx
, s
->session
))
3190 && s
->session_ctx
->new_session_cb
!= NULL
) {
3191 SSL_SESSION_up_ref(s
->session
);
3192 if (!s
->session_ctx
->new_session_cb(s
, s
->session
))
3193 SSL_SESSION_free(s
->session
);
3196 /* auto flush every 255 connections */
3197 if ((!(i
& SSL_SESS_CACHE_NO_AUTO_CLEAR
)) && ((i
& mode
) == mode
)) {
3198 if ((((mode
& SSL_SESS_CACHE_CLIENT
)
3199 ? s
->session_ctx
->stats
.sess_connect_good
3200 : s
->session_ctx
->stats
.sess_accept_good
) & 0xff) == 0xff) {
3201 SSL_CTX_flush_sessions(s
->session_ctx
, (unsigned long)time(NULL
));
3206 const SSL_METHOD
*SSL_CTX_get_ssl_method(SSL_CTX
*ctx
)
3211 const SSL_METHOD
*SSL_get_ssl_method(SSL
*s
)
3216 int SSL_set_ssl_method(SSL
*s
, const SSL_METHOD
*meth
)
3220 if (s
->method
!= meth
) {
3221 const SSL_METHOD
*sm
= s
->method
;
3222 int (*hf
) (SSL
*) = s
->handshake_func
;
3224 if (sm
->version
== meth
->version
)
3229 ret
= s
->method
->ssl_new(s
);
3232 if (hf
== sm
->ssl_connect
)
3233 s
->handshake_func
= meth
->ssl_connect
;
3234 else if (hf
== sm
->ssl_accept
)
3235 s
->handshake_func
= meth
->ssl_accept
;
3240 int SSL_get_error(const SSL
*s
, int i
)
3247 return (SSL_ERROR_NONE
);
3250 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3251 * where we do encode the error
3253 if ((l
= ERR_peek_error()) != 0) {
3254 if (ERR_GET_LIB(l
) == ERR_LIB_SYS
)
3255 return (SSL_ERROR_SYSCALL
);
3257 return (SSL_ERROR_SSL
);
3260 if (SSL_want_read(s
)) {
3261 bio
= SSL_get_rbio(s
);
3262 if (BIO_should_read(bio
))
3263 return (SSL_ERROR_WANT_READ
);
3264 else if (BIO_should_write(bio
))
3266 * This one doesn't make too much sense ... We never try to write
3267 * to the rbio, and an application program where rbio and wbio
3268 * are separate couldn't even know what it should wait for.
3269 * However if we ever set s->rwstate incorrectly (so that we have
3270 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3271 * wbio *are* the same, this test works around that bug; so it
3272 * might be safer to keep it.
3274 return (SSL_ERROR_WANT_WRITE
);
3275 else if (BIO_should_io_special(bio
)) {
3276 reason
= BIO_get_retry_reason(bio
);
3277 if (reason
== BIO_RR_CONNECT
)
3278 return (SSL_ERROR_WANT_CONNECT
);
3279 else if (reason
== BIO_RR_ACCEPT
)
3280 return (SSL_ERROR_WANT_ACCEPT
);
3282 return (SSL_ERROR_SYSCALL
); /* unknown */
3286 if (SSL_want_write(s
)) {
3287 /* Access wbio directly - in order to use the buffered bio if present */
3289 if (BIO_should_write(bio
))
3290 return (SSL_ERROR_WANT_WRITE
);
3291 else if (BIO_should_read(bio
))
3293 * See above (SSL_want_read(s) with BIO_should_write(bio))
3295 return (SSL_ERROR_WANT_READ
);
3296 else if (BIO_should_io_special(bio
)) {
3297 reason
= BIO_get_retry_reason(bio
);
3298 if (reason
== BIO_RR_CONNECT
)
3299 return (SSL_ERROR_WANT_CONNECT
);
3300 else if (reason
== BIO_RR_ACCEPT
)
3301 return (SSL_ERROR_WANT_ACCEPT
);
3303 return (SSL_ERROR_SYSCALL
);
3306 if (SSL_want_x509_lookup(s
))
3307 return (SSL_ERROR_WANT_X509_LOOKUP
);
3308 if (SSL_want_async(s
))
3309 return SSL_ERROR_WANT_ASYNC
;
3310 if (SSL_want_async_job(s
))
3311 return SSL_ERROR_WANT_ASYNC_JOB
;
3312 if (SSL_want_client_hello_cb(s
))
3313 return SSL_ERROR_WANT_CLIENT_HELLO_CB
;
3315 if ((s
->shutdown
& SSL_RECEIVED_SHUTDOWN
) &&
3316 (s
->s3
->warn_alert
== SSL_AD_CLOSE_NOTIFY
))
3317 return (SSL_ERROR_ZERO_RETURN
);
3319 return (SSL_ERROR_SYSCALL
);
3322 static int ssl_do_handshake_intern(void *vargs
)
3324 struct ssl_async_args
*args
;
3327 args
= (struct ssl_async_args
*)vargs
;
3330 return s
->handshake_func(s
);
3333 int SSL_do_handshake(SSL
*s
)
3337 if (s
->handshake_func
== NULL
) {
3338 SSLerr(SSL_F_SSL_DO_HANDSHAKE
, SSL_R_CONNECTION_TYPE_NOT_SET
);
3342 ossl_statem_check_finish_init(s
, -1);
3344 s
->method
->ssl_renegotiate_check(s
, 0);
3346 if (SSL_is_server(s
)) {
3347 /* clear SNI settings at server-side */
3348 OPENSSL_free(s
->ext
.hostname
);
3349 s
->ext
.hostname
= NULL
;
3352 if (SSL_in_init(s
) || SSL_in_before(s
)) {
3353 if ((s
->mode
& SSL_MODE_ASYNC
) && ASYNC_get_current_job() == NULL
) {
3354 struct ssl_async_args args
;
3358 ret
= ssl_start_async_job(s
, &args
, ssl_do_handshake_intern
);
3360 ret
= s
->handshake_func(s
);
3366 void SSL_set_accept_state(SSL
*s
)
3370 ossl_statem_clear(s
);
3371 s
->handshake_func
= s
->method
->ssl_accept
;
3375 void SSL_set_connect_state(SSL
*s
)
3379 ossl_statem_clear(s
);
3380 s
->handshake_func
= s
->method
->ssl_connect
;
3384 int ssl_undefined_function(SSL
*s
)
3386 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3390 int ssl_undefined_void_function(void)
3392 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION
,
3393 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3397 int ssl_undefined_const_function(const SSL
*s
)
3402 const SSL_METHOD
*ssl_bad_method(int ver
)
3404 SSLerr(SSL_F_SSL_BAD_METHOD
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
3408 const char *ssl_protocol_to_string(int version
)
3412 case TLS1_3_VERSION
:
3415 case TLS1_2_VERSION
:
3418 case TLS1_1_VERSION
:
3433 case DTLS1_2_VERSION
:
3441 const char *SSL_get_version(const SSL
*s
)
3443 return ssl_protocol_to_string(s
->version
);
3446 SSL
*SSL_dup(SSL
*s
)
3448 STACK_OF(X509_NAME
) *sk
;
3453 /* If we're not quiescent, just up_ref! */
3454 if (!SSL_in_init(s
) || !SSL_in_before(s
)) {
3455 CRYPTO_UP_REF(&s
->references
, &i
, s
->lock
);
3460 * Otherwise, copy configuration state, and session if set.
3462 if ((ret
= SSL_new(SSL_get_SSL_CTX(s
))) == NULL
)
3465 if (s
->session
!= NULL
) {
3467 * Arranges to share the same session via up_ref. This "copies"
3468 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3470 if (!SSL_copy_session_id(ret
, s
))
3474 * No session has been established yet, so we have to expect that
3475 * s->cert or ret->cert will be changed later -- they should not both
3476 * point to the same object, and thus we can't use
3477 * SSL_copy_session_id.
3479 if (!SSL_set_ssl_method(ret
, s
->method
))
3482 if (s
->cert
!= NULL
) {
3483 ssl_cert_free(ret
->cert
);
3484 ret
->cert
= ssl_cert_dup(s
->cert
);
3485 if (ret
->cert
== NULL
)
3489 if (!SSL_set_session_id_context(ret
, s
->sid_ctx
,
3490 (int)s
->sid_ctx_length
))
3494 if (!ssl_dane_dup(ret
, s
))
3496 ret
->version
= s
->version
;
3497 ret
->options
= s
->options
;
3498 ret
->mode
= s
->mode
;
3499 SSL_set_max_cert_list(ret
, SSL_get_max_cert_list(s
));
3500 SSL_set_read_ahead(ret
, SSL_get_read_ahead(s
));
3501 ret
->msg_callback
= s
->msg_callback
;
3502 ret
->msg_callback_arg
= s
->msg_callback_arg
;
3503 SSL_set_verify(ret
, SSL_get_verify_mode(s
), SSL_get_verify_callback(s
));
3504 SSL_set_verify_depth(ret
, SSL_get_verify_depth(s
));
3505 ret
->generate_session_id
= s
->generate_session_id
;
3507 SSL_set_info_callback(ret
, SSL_get_info_callback(s
));
3509 /* copy app data, a little dangerous perhaps */
3510 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL
, &ret
->ex_data
, &s
->ex_data
))
3513 /* setup rbio, and wbio */
3514 if (s
->rbio
!= NULL
) {
3515 if (!BIO_dup_state(s
->rbio
, (char *)&ret
->rbio
))
3518 if (s
->wbio
!= NULL
) {
3519 if (s
->wbio
!= s
->rbio
) {
3520 if (!BIO_dup_state(s
->wbio
, (char *)&ret
->wbio
))
3523 BIO_up_ref(ret
->rbio
);
3524 ret
->wbio
= ret
->rbio
;
3528 ret
->server
= s
->server
;
3529 if (s
->handshake_func
) {
3531 SSL_set_accept_state(ret
);
3533 SSL_set_connect_state(ret
);
3535 ret
->shutdown
= s
->shutdown
;
3538 ret
->default_passwd_callback
= s
->default_passwd_callback
;
3539 ret
->default_passwd_callback_userdata
= s
->default_passwd_callback_userdata
;
3541 X509_VERIFY_PARAM_inherit(ret
->param
, s
->param
);
3543 /* dup the cipher_list and cipher_list_by_id stacks */
3544 if (s
->cipher_list
!= NULL
) {
3545 if ((ret
->cipher_list
= sk_SSL_CIPHER_dup(s
->cipher_list
)) == NULL
)
3548 if (s
->cipher_list_by_id
!= NULL
)
3549 if ((ret
->cipher_list_by_id
= sk_SSL_CIPHER_dup(s
->cipher_list_by_id
))
3553 /* Dup the client_CA list */
3554 if (s
->ca_names
!= NULL
) {
3555 if ((sk
= sk_X509_NAME_dup(s
->ca_names
)) == NULL
)
3558 for (i
= 0; i
< sk_X509_NAME_num(sk
); i
++) {
3559 xn
= sk_X509_NAME_value(sk
, i
);
3560 if (sk_X509_NAME_set(sk
, i
, X509_NAME_dup(xn
)) == NULL
) {
3573 void ssl_clear_cipher_ctx(SSL
*s
)
3575 if (s
->enc_read_ctx
!= NULL
) {
3576 EVP_CIPHER_CTX_free(s
->enc_read_ctx
);
3577 s
->enc_read_ctx
= NULL
;
3579 if (s
->enc_write_ctx
!= NULL
) {
3580 EVP_CIPHER_CTX_free(s
->enc_write_ctx
);
3581 s
->enc_write_ctx
= NULL
;
3583 #ifndef OPENSSL_NO_COMP
3584 COMP_CTX_free(s
->expand
);
3586 COMP_CTX_free(s
->compress
);
3591 X509
*SSL_get_certificate(const SSL
*s
)
3593 if (s
->cert
!= NULL
)
3594 return (s
->cert
->key
->x509
);
3599 EVP_PKEY
*SSL_get_privatekey(const SSL
*s
)
3601 if (s
->cert
!= NULL
)
3602 return (s
->cert
->key
->privatekey
);
3607 X509
*SSL_CTX_get0_certificate(const SSL_CTX
*ctx
)
3609 if (ctx
->cert
!= NULL
)
3610 return ctx
->cert
->key
->x509
;
3615 EVP_PKEY
*SSL_CTX_get0_privatekey(const SSL_CTX
*ctx
)
3617 if (ctx
->cert
!= NULL
)
3618 return ctx
->cert
->key
->privatekey
;
3623 const SSL_CIPHER
*SSL_get_current_cipher(const SSL
*s
)
3625 if ((s
->session
!= NULL
) && (s
->session
->cipher
!= NULL
))
3626 return (s
->session
->cipher
);
3630 const SSL_CIPHER
*SSL_get_pending_cipher(const SSL
*s
)
3632 return s
->s3
->tmp
.new_cipher
;
3635 const COMP_METHOD
*SSL_get_current_compression(SSL
*s
)
3637 #ifndef OPENSSL_NO_COMP
3638 return s
->compress
? COMP_CTX_get_method(s
->compress
) : NULL
;
3644 const COMP_METHOD
*SSL_get_current_expansion(SSL
*s
)
3646 #ifndef OPENSSL_NO_COMP
3647 return s
->expand
? COMP_CTX_get_method(s
->expand
) : NULL
;
3653 int ssl_init_wbio_buffer(SSL
*s
)
3657 if (s
->bbio
!= NULL
) {
3658 /* Already buffered. */
3662 bbio
= BIO_new(BIO_f_buffer());
3663 if (bbio
== NULL
|| !BIO_set_read_buffer_size(bbio
, 1)) {
3665 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER
, ERR_R_BUF_LIB
);
3669 s
->wbio
= BIO_push(bbio
, s
->wbio
);
3674 int ssl_free_wbio_buffer(SSL
*s
)
3676 /* callers ensure s is never null */
3677 if (s
->bbio
== NULL
)
3680 s
->wbio
= BIO_pop(s
->wbio
);
3681 if (!ossl_assert(s
->wbio
!= NULL
))
3689 void SSL_CTX_set_quiet_shutdown(SSL_CTX
*ctx
, int mode
)
3691 ctx
->quiet_shutdown
= mode
;
3694 int SSL_CTX_get_quiet_shutdown(const SSL_CTX
*ctx
)
3696 return (ctx
->quiet_shutdown
);
3699 void SSL_set_quiet_shutdown(SSL
*s
, int mode
)
3701 s
->quiet_shutdown
= mode
;
3704 int SSL_get_quiet_shutdown(const SSL
*s
)
3706 return (s
->quiet_shutdown
);
3709 void SSL_set_shutdown(SSL
*s
, int mode
)
3714 int SSL_get_shutdown(const SSL
*s
)
3719 int SSL_version(const SSL
*s
)
3724 int SSL_client_version(const SSL
*s
)
3726 return s
->client_version
;
3729 SSL_CTX
*SSL_get_SSL_CTX(const SSL
*ssl
)
3734 SSL_CTX
*SSL_set_SSL_CTX(SSL
*ssl
, SSL_CTX
*ctx
)
3737 if (ssl
->ctx
== ctx
)
3740 ctx
= ssl
->session_ctx
;
3741 new_cert
= ssl_cert_dup(ctx
->cert
);
3742 if (new_cert
== NULL
) {
3746 if (!custom_exts_copy_flags(&new_cert
->custext
, &ssl
->cert
->custext
)) {
3747 ssl_cert_free(new_cert
);
3751 ssl_cert_free(ssl
->cert
);
3752 ssl
->cert
= new_cert
;
3755 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3756 * so setter APIs must prevent invalid lengths from entering the system.
3758 if (!ossl_assert(ssl
->sid_ctx_length
<= sizeof(ssl
->sid_ctx
)))
3762 * If the session ID context matches that of the parent SSL_CTX,
3763 * inherit it from the new SSL_CTX as well. If however the context does
3764 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3765 * leave it unchanged.
3767 if ((ssl
->ctx
!= NULL
) &&
3768 (ssl
->sid_ctx_length
== ssl
->ctx
->sid_ctx_length
) &&
3769 (memcmp(ssl
->sid_ctx
, ssl
->ctx
->sid_ctx
, ssl
->sid_ctx_length
) == 0)) {
3770 ssl
->sid_ctx_length
= ctx
->sid_ctx_length
;
3771 memcpy(&ssl
->sid_ctx
, &ctx
->sid_ctx
, sizeof(ssl
->sid_ctx
));
3774 SSL_CTX_up_ref(ctx
);
3775 SSL_CTX_free(ssl
->ctx
); /* decrement reference count */
3781 int SSL_CTX_set_default_verify_paths(SSL_CTX
*ctx
)
3783 return (X509_STORE_set_default_paths(ctx
->cert_store
));
3786 int SSL_CTX_set_default_verify_dir(SSL_CTX
*ctx
)
3788 X509_LOOKUP
*lookup
;
3790 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_hash_dir());
3793 X509_LOOKUP_add_dir(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3795 /* Clear any errors if the default directory does not exist */
3801 int SSL_CTX_set_default_verify_file(SSL_CTX
*ctx
)
3803 X509_LOOKUP
*lookup
;
3805 lookup
= X509_STORE_add_lookup(ctx
->cert_store
, X509_LOOKUP_file());
3809 X509_LOOKUP_load_file(lookup
, NULL
, X509_FILETYPE_DEFAULT
);
3811 /* Clear any errors if the default file does not exist */
3817 int SSL_CTX_load_verify_locations(SSL_CTX
*ctx
, const char *CAfile
,
3820 return (X509_STORE_load_locations(ctx
->cert_store
, CAfile
, CApath
));
3823 void SSL_set_info_callback(SSL
*ssl
,
3824 void (*cb
) (const SSL
*ssl
, int type
, int val
))
3826 ssl
->info_callback
= cb
;
3830 * One compiler (Diab DCC) doesn't like argument names in returned function
3833 void (*SSL_get_info_callback(const SSL
*ssl
)) (const SSL
* /* ssl */ ,
3836 return ssl
->info_callback
;
3839 void SSL_set_verify_result(SSL
*ssl
, long arg
)
3841 ssl
->verify_result
= arg
;
3844 long SSL_get_verify_result(const SSL
*ssl
)
3846 return (ssl
->verify_result
);
3849 size_t SSL_get_client_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3852 return sizeof(ssl
->s3
->client_random
);
3853 if (outlen
> sizeof(ssl
->s3
->client_random
))
3854 outlen
= sizeof(ssl
->s3
->client_random
);
3855 memcpy(out
, ssl
->s3
->client_random
, outlen
);
3859 size_t SSL_get_server_random(const SSL
*ssl
, unsigned char *out
, size_t outlen
)
3862 return sizeof(ssl
->s3
->server_random
);
3863 if (outlen
> sizeof(ssl
->s3
->server_random
))
3864 outlen
= sizeof(ssl
->s3
->server_random
);
3865 memcpy(out
, ssl
->s3
->server_random
, outlen
);
3869 size_t SSL_SESSION_get_master_key(const SSL_SESSION
*session
,
3870 unsigned char *out
, size_t outlen
)
3873 return session
->master_key_length
;
3874 if (outlen
> session
->master_key_length
)
3875 outlen
= session
->master_key_length
;
3876 memcpy(out
, session
->master_key
, outlen
);
3880 int SSL_SESSION_set1_master_key(SSL_SESSION
*sess
, const unsigned char *in
,
3883 if (len
> sizeof(sess
->master_key
))
3886 memcpy(sess
->master_key
, in
, len
);
3887 sess
->master_key_length
= len
;
3892 int SSL_set_ex_data(SSL
*s
, int idx
, void *arg
)
3894 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3897 void *SSL_get_ex_data(const SSL
*s
, int idx
)
3899 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3902 int SSL_CTX_set_ex_data(SSL_CTX
*s
, int idx
, void *arg
)
3904 return (CRYPTO_set_ex_data(&s
->ex_data
, idx
, arg
));
3907 void *SSL_CTX_get_ex_data(const SSL_CTX
*s
, int idx
)
3909 return (CRYPTO_get_ex_data(&s
->ex_data
, idx
));
3912 X509_STORE
*SSL_CTX_get_cert_store(const SSL_CTX
*ctx
)
3914 return (ctx
->cert_store
);
3917 void SSL_CTX_set_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3919 X509_STORE_free(ctx
->cert_store
);
3920 ctx
->cert_store
= store
;
3923 void SSL_CTX_set1_cert_store(SSL_CTX
*ctx
, X509_STORE
*store
)
3926 X509_STORE_up_ref(store
);
3927 SSL_CTX_set_cert_store(ctx
, store
);
3930 int SSL_want(const SSL
*s
)
3932 return (s
->rwstate
);
3936 * \brief Set the callback for generating temporary DH keys.
3937 * \param ctx the SSL context.
3938 * \param dh the callback
3941 #ifndef OPENSSL_NO_DH
3942 void SSL_CTX_set_tmp_dh_callback(SSL_CTX
*ctx
,
3943 DH
*(*dh
) (SSL
*ssl
, int is_export
,
3946 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3949 void SSL_set_tmp_dh_callback(SSL
*ssl
, DH
*(*dh
) (SSL
*ssl
, int is_export
,
3952 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_TMP_DH_CB
, (void (*)(void))dh
);
3956 #ifndef OPENSSL_NO_PSK
3957 int SSL_CTX_use_psk_identity_hint(SSL_CTX
*ctx
, const char *identity_hint
)
3959 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3960 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3963 OPENSSL_free(ctx
->cert
->psk_identity_hint
);
3964 if (identity_hint
!= NULL
) {
3965 ctx
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3966 if (ctx
->cert
->psk_identity_hint
== NULL
)
3969 ctx
->cert
->psk_identity_hint
= NULL
;
3973 int SSL_use_psk_identity_hint(SSL
*s
, const char *identity_hint
)
3978 if (identity_hint
!= NULL
&& strlen(identity_hint
) > PSK_MAX_IDENTITY_LEN
) {
3979 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT
, SSL_R_DATA_LENGTH_TOO_LONG
);
3982 OPENSSL_free(s
->cert
->psk_identity_hint
);
3983 if (identity_hint
!= NULL
) {
3984 s
->cert
->psk_identity_hint
= OPENSSL_strdup(identity_hint
);
3985 if (s
->cert
->psk_identity_hint
== NULL
)
3988 s
->cert
->psk_identity_hint
= NULL
;
3992 const char *SSL_get_psk_identity_hint(const SSL
*s
)
3994 if (s
== NULL
|| s
->session
== NULL
)
3996 return (s
->session
->psk_identity_hint
);
3999 const char *SSL_get_psk_identity(const SSL
*s
)
4001 if (s
== NULL
|| s
->session
== NULL
)
4003 return (s
->session
->psk_identity
);
4006 void SSL_set_psk_client_callback(SSL
*s
, SSL_psk_client_cb_func cb
)
4008 s
->psk_client_callback
= cb
;
4011 void SSL_CTX_set_psk_client_callback(SSL_CTX
*ctx
, SSL_psk_client_cb_func cb
)
4013 ctx
->psk_client_callback
= cb
;
4016 void SSL_set_psk_server_callback(SSL
*s
, SSL_psk_server_cb_func cb
)
4018 s
->psk_server_callback
= cb
;
4021 void SSL_CTX_set_psk_server_callback(SSL_CTX
*ctx
, SSL_psk_server_cb_func cb
)
4023 ctx
->psk_server_callback
= cb
;
4027 void SSL_set_psk_find_session_callback(SSL
*s
, SSL_psk_find_session_cb_func cb
)
4029 s
->psk_find_session_cb
= cb
;
4032 void SSL_CTX_set_psk_find_session_callback(SSL_CTX
*ctx
,
4033 SSL_psk_find_session_cb_func cb
)
4035 ctx
->psk_find_session_cb
= cb
;
4038 void SSL_set_psk_use_session_callback(SSL
*s
, SSL_psk_use_session_cb_func cb
)
4040 s
->psk_use_session_cb
= cb
;
4043 void SSL_CTX_set_psk_use_session_callback(SSL_CTX
*ctx
,
4044 SSL_psk_use_session_cb_func cb
)
4046 ctx
->psk_use_session_cb
= cb
;
4049 void SSL_CTX_set_msg_callback(SSL_CTX
*ctx
,
4050 void (*cb
) (int write_p
, int version
,
4051 int content_type
, const void *buf
,
4052 size_t len
, SSL
*ssl
, void *arg
))
4054 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4057 void SSL_set_msg_callback(SSL
*ssl
,
4058 void (*cb
) (int write_p
, int version
,
4059 int content_type
, const void *buf
,
4060 size_t len
, SSL
*ssl
, void *arg
))
4062 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_MSG_CALLBACK
, (void (*)(void))cb
);
4065 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX
*ctx
,
4066 int (*cb
) (SSL
*ssl
,
4070 SSL_CTX_callback_ctrl(ctx
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4071 (void (*)(void))cb
);
4074 void SSL_set_not_resumable_session_callback(SSL
*ssl
,
4075 int (*cb
) (SSL
*ssl
,
4076 int is_forward_secure
))
4078 SSL_callback_ctrl(ssl
, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB
,
4079 (void (*)(void))cb
);
4082 void SSL_CTX_set_record_padding_callback(SSL_CTX
*ctx
,
4083 size_t (*cb
) (SSL
*ssl
, int type
,
4084 size_t len
, void *arg
))
4086 ctx
->record_padding_cb
= cb
;
4089 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX
*ctx
, void *arg
)
4091 ctx
->record_padding_arg
= arg
;
4094 void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX
*ctx
)
4096 return ctx
->record_padding_arg
;
4099 int SSL_CTX_set_block_padding(SSL_CTX
*ctx
, size_t block_size
)
4101 /* block size of 0 or 1 is basically no padding */
4102 if (block_size
== 1)
4103 ctx
->block_padding
= 0;
4104 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4105 ctx
->block_padding
= block_size
;
4111 void SSL_set_record_padding_callback(SSL
*ssl
,
4112 size_t (*cb
) (SSL
*ssl
, int type
,
4113 size_t len
, void *arg
))
4115 ssl
->record_padding_cb
= cb
;
4118 void SSL_set_record_padding_callback_arg(SSL
*ssl
, void *arg
)
4120 ssl
->record_padding_arg
= arg
;
4123 void *SSL_get_record_padding_callback_arg(SSL
*ssl
)
4125 return ssl
->record_padding_arg
;
4128 int SSL_set_block_padding(SSL
*ssl
, size_t block_size
)
4130 /* block size of 0 or 1 is basically no padding */
4131 if (block_size
== 1)
4132 ssl
->block_padding
= 0;
4133 else if (block_size
<= SSL3_RT_MAX_PLAIN_LENGTH
)
4134 ssl
->block_padding
= block_size
;
4141 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4142 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4143 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4144 * Returns the newly allocated ctx;
4147 EVP_MD_CTX
*ssl_replace_hash(EVP_MD_CTX
**hash
, const EVP_MD
*md
)
4149 ssl_clear_hash_ctx(hash
);
4150 *hash
= EVP_MD_CTX_new();
4151 if (*hash
== NULL
|| (md
&& EVP_DigestInit_ex(*hash
, md
, NULL
) <= 0)) {
4152 EVP_MD_CTX_free(*hash
);
4159 void ssl_clear_hash_ctx(EVP_MD_CTX
**hash
)
4162 EVP_MD_CTX_free(*hash
);
4166 /* Retrieve handshake hashes */
4167 int ssl_handshake_hash(SSL
*s
, unsigned char *out
, size_t outlen
,
4170 EVP_MD_CTX
*ctx
= NULL
;
4171 EVP_MD_CTX
*hdgst
= s
->s3
->handshake_dgst
;
4172 int hashleni
= EVP_MD_CTX_size(hdgst
);
4175 if (hashleni
< 0 || (size_t)hashleni
> outlen
)
4178 ctx
= EVP_MD_CTX_new();
4182 if (!EVP_MD_CTX_copy_ex(ctx
, hdgst
)
4183 || EVP_DigestFinal_ex(ctx
, out
, NULL
) <= 0)
4186 *hashlen
= hashleni
;
4190 EVP_MD_CTX_free(ctx
);
4194 int SSL_session_reused(SSL
*s
)
4199 int SSL_is_server(const SSL
*s
)
4204 #if OPENSSL_API_COMPAT < 0x10100000L
4205 void SSL_set_debug(SSL
*s
, int debug
)
4207 /* Old function was do-nothing anyway... */
4213 void SSL_set_security_level(SSL
*s
, int level
)
4215 s
->cert
->sec_level
= level
;
4218 int SSL_get_security_level(const SSL
*s
)
4220 return s
->cert
->sec_level
;
4223 void SSL_set_security_callback(SSL
*s
,
4224 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4225 int op
, int bits
, int nid
,
4226 void *other
, void *ex
))
4228 s
->cert
->sec_cb
= cb
;
4231 int (*SSL_get_security_callback(const SSL
*s
)) (const SSL
*s
,
4232 const SSL_CTX
*ctx
, int op
,
4233 int bits
, int nid
, void *other
,
4235 return s
->cert
->sec_cb
;
4238 void SSL_set0_security_ex_data(SSL
*s
, void *ex
)
4240 s
->cert
->sec_ex
= ex
;
4243 void *SSL_get0_security_ex_data(const SSL
*s
)
4245 return s
->cert
->sec_ex
;
4248 void SSL_CTX_set_security_level(SSL_CTX
*ctx
, int level
)
4250 ctx
->cert
->sec_level
= level
;
4253 int SSL_CTX_get_security_level(const SSL_CTX
*ctx
)
4255 return ctx
->cert
->sec_level
;
4258 void SSL_CTX_set_security_callback(SSL_CTX
*ctx
,
4259 int (*cb
) (const SSL
*s
, const SSL_CTX
*ctx
,
4260 int op
, int bits
, int nid
,
4261 void *other
, void *ex
))
4263 ctx
->cert
->sec_cb
= cb
;
4266 int (*SSL_CTX_get_security_callback(const SSL_CTX
*ctx
)) (const SSL
*s
,
4272 return ctx
->cert
->sec_cb
;
4275 void SSL_CTX_set0_security_ex_data(SSL_CTX
*ctx
, void *ex
)
4277 ctx
->cert
->sec_ex
= ex
;
4280 void *SSL_CTX_get0_security_ex_data(const SSL_CTX
*ctx
)
4282 return ctx
->cert
->sec_ex
;
4286 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4287 * can return unsigned long, instead of the generic long return value from the
4288 * control interface.
4290 unsigned long SSL_CTX_get_options(const SSL_CTX
*ctx
)
4292 return ctx
->options
;
4295 unsigned long SSL_get_options(const SSL
*s
)
4300 unsigned long SSL_CTX_set_options(SSL_CTX
*ctx
, unsigned long op
)
4302 return ctx
->options
|= op
;
4305 unsigned long SSL_set_options(SSL
*s
, unsigned long op
)
4307 return s
->options
|= op
;
4310 unsigned long SSL_CTX_clear_options(SSL_CTX
*ctx
, unsigned long op
)
4312 return ctx
->options
&= ~op
;
4315 unsigned long SSL_clear_options(SSL
*s
, unsigned long op
)
4317 return s
->options
&= ~op
;
4320 STACK_OF(X509
) *SSL_get0_verified_chain(const SSL
*s
)
4322 return s
->verified_chain
;
4325 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER
, SSL_CIPHER
, ssl_cipher_id
);
4327 #ifndef OPENSSL_NO_CT
4330 * Moves SCTs from the |src| stack to the |dst| stack.
4331 * The source of each SCT will be set to |origin|.
4332 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4334 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4336 static int ct_move_scts(STACK_OF(SCT
) **dst
, STACK_OF(SCT
) *src
,
4337 sct_source_t origin
)
4343 *dst
= sk_SCT_new_null();
4345 SSLerr(SSL_F_CT_MOVE_SCTS
, ERR_R_MALLOC_FAILURE
);
4350 while ((sct
= sk_SCT_pop(src
)) != NULL
) {
4351 if (SCT_set_source(sct
, origin
) != 1)
4354 if (sk_SCT_push(*dst
, sct
) <= 0)
4362 sk_SCT_push(src
, sct
); /* Put the SCT back */
4367 * Look for data collected during ServerHello and parse if found.
4368 * Returns the number of SCTs extracted.
4370 static int ct_extract_tls_extension_scts(SSL
*s
)
4372 int scts_extracted
= 0;
4374 if (s
->ext
.scts
!= NULL
) {
4375 const unsigned char *p
= s
->ext
.scts
;
4376 STACK_OF(SCT
) *scts
= o2i_SCT_LIST(NULL
, &p
, s
->ext
.scts_len
);
4378 scts_extracted
= ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_TLS_EXTENSION
);
4380 SCT_LIST_free(scts
);
4383 return scts_extracted
;
4387 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4388 * contains an SCT X509 extension. They will be stored in |s->scts|.
4390 * - The number of SCTs extracted, assuming an OCSP response exists.
4391 * - 0 if no OCSP response exists or it contains no SCTs.
4392 * - A negative integer if an error occurs.
4394 static int ct_extract_ocsp_response_scts(SSL
*s
)
4396 # ifndef OPENSSL_NO_OCSP
4397 int scts_extracted
= 0;
4398 const unsigned char *p
;
4399 OCSP_BASICRESP
*br
= NULL
;
4400 OCSP_RESPONSE
*rsp
= NULL
;
4401 STACK_OF(SCT
) *scts
= NULL
;
4404 if (s
->ext
.ocsp
.resp
== NULL
|| s
->ext
.ocsp
.resp_len
== 0)
4407 p
= s
->ext
.ocsp
.resp
;
4408 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, (int)s
->ext
.ocsp
.resp_len
);
4412 br
= OCSP_response_get1_basic(rsp
);
4416 for (i
= 0; i
< OCSP_resp_count(br
); ++i
) {
4417 OCSP_SINGLERESP
*single
= OCSP_resp_get0(br
, i
);
4423 OCSP_SINGLERESP_get1_ext_d2i(single
, NID_ct_cert_scts
, NULL
, NULL
);
4425 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_OCSP_STAPLED_RESPONSE
);
4426 if (scts_extracted
< 0)
4430 SCT_LIST_free(scts
);
4431 OCSP_BASICRESP_free(br
);
4432 OCSP_RESPONSE_free(rsp
);
4433 return scts_extracted
;
4435 /* Behave as if no OCSP response exists */
4441 * Attempts to extract SCTs from the peer certificate.
4442 * Return the number of SCTs extracted, or a negative integer if an error
4445 static int ct_extract_x509v3_extension_scts(SSL
*s
)
4447 int scts_extracted
= 0;
4448 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4451 STACK_OF(SCT
) *scts
=
4452 X509_get_ext_d2i(cert
, NID_ct_precert_scts
, NULL
, NULL
);
4455 ct_move_scts(&s
->scts
, scts
, SCT_SOURCE_X509V3_EXTENSION
);
4457 SCT_LIST_free(scts
);
4460 return scts_extracted
;
4464 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4465 * response (if it exists) and X509v3 extensions in the certificate.
4466 * Returns NULL if an error occurs.
4468 const STACK_OF(SCT
) *SSL_get0_peer_scts(SSL
*s
)
4470 if (!s
->scts_parsed
) {
4471 if (ct_extract_tls_extension_scts(s
) < 0 ||
4472 ct_extract_ocsp_response_scts(s
) < 0 ||
4473 ct_extract_x509v3_extension_scts(s
) < 0)
4483 static int ct_permissive(const CT_POLICY_EVAL_CTX
* ctx
,
4484 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4489 static int ct_strict(const CT_POLICY_EVAL_CTX
* ctx
,
4490 const STACK_OF(SCT
) *scts
, void *unused_arg
)
4492 int count
= scts
!= NULL
? sk_SCT_num(scts
) : 0;
4495 for (i
= 0; i
< count
; ++i
) {
4496 SCT
*sct
= sk_SCT_value(scts
, i
);
4497 int status
= SCT_get_validation_status(sct
);
4499 if (status
== SCT_VALIDATION_STATUS_VALID
)
4502 SSLerr(SSL_F_CT_STRICT
, SSL_R_NO_VALID_SCTS
);
4506 int SSL_set_ct_validation_callback(SSL
*s
, ssl_ct_validation_cb callback
,
4510 * Since code exists that uses the custom extension handler for CT, look
4511 * for this and throw an error if they have already registered to use CT.
4513 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(s
->ctx
,
4514 TLSEXT_TYPE_signed_certificate_timestamp
))
4516 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK
,
4517 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4521 if (callback
!= NULL
) {
4523 * If we are validating CT, then we MUST accept SCTs served via OCSP
4525 if (!SSL_set_tlsext_status_type(s
, TLSEXT_STATUSTYPE_ocsp
))
4529 s
->ct_validation_callback
= callback
;
4530 s
->ct_validation_callback_arg
= arg
;
4535 int SSL_CTX_set_ct_validation_callback(SSL_CTX
*ctx
,
4536 ssl_ct_validation_cb callback
, void *arg
)
4539 * Since code exists that uses the custom extension handler for CT, look for
4540 * this and throw an error if they have already registered to use CT.
4542 if (callback
!= NULL
&& SSL_CTX_has_client_custom_ext(ctx
,
4543 TLSEXT_TYPE_signed_certificate_timestamp
))
4545 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK
,
4546 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED
);
4550 ctx
->ct_validation_callback
= callback
;
4551 ctx
->ct_validation_callback_arg
= arg
;
4555 int SSL_ct_is_enabled(const SSL
*s
)
4557 return s
->ct_validation_callback
!= NULL
;
4560 int SSL_CTX_ct_is_enabled(const SSL_CTX
*ctx
)
4562 return ctx
->ct_validation_callback
!= NULL
;
4565 int ssl_validate_ct(SSL
*s
)
4568 X509
*cert
= s
->session
!= NULL
? s
->session
->peer
: NULL
;
4570 SSL_DANE
*dane
= &s
->dane
;
4571 CT_POLICY_EVAL_CTX
*ctx
= NULL
;
4572 const STACK_OF(SCT
) *scts
;
4575 * If no callback is set, the peer is anonymous, or its chain is invalid,
4576 * skip SCT validation - just return success. Applications that continue
4577 * handshakes without certificates, with unverified chains, or pinned leaf
4578 * certificates are outside the scope of the WebPKI and CT.
4580 * The above exclusions notwithstanding the vast majority of peers will
4581 * have rather ordinary certificate chains validated by typical
4582 * applications that perform certificate verification and therefore will
4583 * process SCTs when enabled.
4585 if (s
->ct_validation_callback
== NULL
|| cert
== NULL
||
4586 s
->verify_result
!= X509_V_OK
||
4587 s
->verified_chain
== NULL
|| sk_X509_num(s
->verified_chain
) <= 1)
4591 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4592 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4594 if (DANETLS_ENABLED(dane
) && dane
->mtlsa
!= NULL
) {
4595 switch (dane
->mtlsa
->usage
) {
4596 case DANETLS_USAGE_DANE_TA
:
4597 case DANETLS_USAGE_DANE_EE
:
4602 ctx
= CT_POLICY_EVAL_CTX_new();
4604 SSLerr(SSL_F_SSL_VALIDATE_CT
, ERR_R_MALLOC_FAILURE
);
4608 issuer
= sk_X509_value(s
->verified_chain
, 1);
4609 CT_POLICY_EVAL_CTX_set1_cert(ctx
, cert
);
4610 CT_POLICY_EVAL_CTX_set1_issuer(ctx
, issuer
);
4611 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx
, s
->ctx
->ctlog_store
);
4612 CT_POLICY_EVAL_CTX_set_time(
4613 ctx
, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s
)) * 1000);
4615 scts
= SSL_get0_peer_scts(s
);
4618 * This function returns success (> 0) only when all the SCTs are valid, 0
4619 * when some are invalid, and < 0 on various internal errors (out of
4620 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4621 * reason to abort the handshake, that decision is up to the callback.
4622 * Therefore, we error out only in the unexpected case that the return
4623 * value is negative.
4625 * XXX: One might well argue that the return value of this function is an
4626 * unfortunate design choice. Its job is only to determine the validation
4627 * status of each of the provided SCTs. So long as it correctly separates
4628 * the wheat from the chaff it should return success. Failure in this case
4629 * ought to correspond to an inability to carry out its duties.
4631 if (SCT_LIST_validate(scts
, ctx
) < 0) {
4632 SSLerr(SSL_F_SSL_VALIDATE_CT
, SSL_R_SCT_VERIFICATION_FAILED
);
4636 ret
= s
->ct_validation_callback(ctx
, scts
, s
->ct_validation_callback_arg
);
4638 ret
= 0; /* This function returns 0 on failure */
4641 CT_POLICY_EVAL_CTX_free(ctx
);
4643 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4644 * failure return code here. Also the application may wish the complete
4645 * the handshake, and then disconnect cleanly at a higher layer, after
4646 * checking the verification status of the completed connection.
4648 * We therefore force a certificate verification failure which will be
4649 * visible via SSL_get_verify_result() and cached as part of any resumed
4652 * Note: the permissive callback is for information gathering only, always
4653 * returns success, and does not affect verification status. Only the
4654 * strict callback or a custom application-specified callback can trigger
4655 * connection failure or record a verification error.
4658 s
->verify_result
= X509_V_ERR_NO_VALID_SCTS
;
4662 int SSL_CTX_enable_ct(SSL_CTX
*ctx
, int validation_mode
)
4664 switch (validation_mode
) {
4666 SSLerr(SSL_F_SSL_CTX_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4668 case SSL_CT_VALIDATION_PERMISSIVE
:
4669 return SSL_CTX_set_ct_validation_callback(ctx
, ct_permissive
, NULL
);
4670 case SSL_CT_VALIDATION_STRICT
:
4671 return SSL_CTX_set_ct_validation_callback(ctx
, ct_strict
, NULL
);
4675 int SSL_enable_ct(SSL
*s
, int validation_mode
)
4677 switch (validation_mode
) {
4679 SSLerr(SSL_F_SSL_ENABLE_CT
, SSL_R_INVALID_CT_VALIDATION_TYPE
);
4681 case SSL_CT_VALIDATION_PERMISSIVE
:
4682 return SSL_set_ct_validation_callback(s
, ct_permissive
, NULL
);
4683 case SSL_CT_VALIDATION_STRICT
:
4684 return SSL_set_ct_validation_callback(s
, ct_strict
, NULL
);
4688 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX
*ctx
)
4690 return CTLOG_STORE_load_default_file(ctx
->ctlog_store
);
4693 int SSL_CTX_set_ctlog_list_file(SSL_CTX
*ctx
, const char *path
)
4695 return CTLOG_STORE_load_file(ctx
->ctlog_store
, path
);
4698 void SSL_CTX_set0_ctlog_store(SSL_CTX
*ctx
, CTLOG_STORE
* logs
)
4700 CTLOG_STORE_free(ctx
->ctlog_store
);
4701 ctx
->ctlog_store
= logs
;
4704 const CTLOG_STORE
*SSL_CTX_get0_ctlog_store(const SSL_CTX
*ctx
)
4706 return ctx
->ctlog_store
;
4709 #endif /* OPENSSL_NO_CT */
4711 void SSL_CTX_set_client_hello_cb(SSL_CTX
*c
, SSL_client_hello_cb_fn cb
,
4714 c
->client_hello_cb
= cb
;
4715 c
->client_hello_cb_arg
= arg
;
4718 int SSL_client_hello_isv2(SSL
*s
)
4720 if (s
->clienthello
== NULL
)
4722 return s
->clienthello
->isv2
;
4725 unsigned int SSL_client_hello_get0_legacy_version(SSL
*s
)
4727 if (s
->clienthello
== NULL
)
4729 return s
->clienthello
->legacy_version
;
4732 size_t SSL_client_hello_get0_random(SSL
*s
, const unsigned char **out
)
4734 if (s
->clienthello
== NULL
)
4737 *out
= s
->clienthello
->random
;
4738 return SSL3_RANDOM_SIZE
;
4741 size_t SSL_client_hello_get0_session_id(SSL
*s
, const unsigned char **out
)
4743 if (s
->clienthello
== NULL
)
4746 *out
= s
->clienthello
->session_id
;
4747 return s
->clienthello
->session_id_len
;
4750 size_t SSL_client_hello_get0_ciphers(SSL
*s
, const unsigned char **out
)
4752 if (s
->clienthello
== NULL
)
4755 *out
= PACKET_data(&s
->clienthello
->ciphersuites
);
4756 return PACKET_remaining(&s
->clienthello
->ciphersuites
);
4759 size_t SSL_client_hello_get0_compression_methods(SSL
*s
, const unsigned char **out
)
4761 if (s
->clienthello
== NULL
)
4764 *out
= s
->clienthello
->compressions
;
4765 return s
->clienthello
->compressions_len
;
4768 int SSL_client_hello_get1_extensions_present(SSL
*s
, int **out
, size_t *outlen
)
4774 if (s
->clienthello
== NULL
|| out
== NULL
|| outlen
== NULL
)
4776 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4777 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4781 present
= OPENSSL_malloc(sizeof(*present
) * num
);
4782 if (present
== NULL
)
4784 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; i
++) {
4785 ext
= s
->clienthello
->pre_proc_exts
+ i
;
4787 if (ext
->received_order
>= num
)
4789 present
[ext
->received_order
] = ext
->type
;
4796 OPENSSL_free(present
);
4800 int SSL_client_hello_get0_ext(SSL
*s
, unsigned int type
, const unsigned char **out
,
4806 if (s
->clienthello
== NULL
)
4808 for (i
= 0; i
< s
->clienthello
->pre_proc_exts_len
; ++i
) {
4809 r
= s
->clienthello
->pre_proc_exts
+ i
;
4810 if (r
->present
&& r
->type
== type
) {
4812 *out
= PACKET_data(&r
->data
);
4814 *outlen
= PACKET_remaining(&r
->data
);
4821 int SSL_free_buffers(SSL
*ssl
)
4823 RECORD_LAYER
*rl
= &ssl
->rlayer
;
4825 if (RECORD_LAYER_read_pending(rl
) || RECORD_LAYER_write_pending(rl
))
4828 RECORD_LAYER_release(rl
);
4832 int SSL_alloc_buffers(SSL
*ssl
)
4834 return ssl3_setup_buffers(ssl
);
4837 void SSL_CTX_set_keylog_callback(SSL_CTX
*ctx
, SSL_CTX_keylog_cb_func cb
)
4839 ctx
->keylog_callback
= cb
;
4842 SSL_CTX_keylog_cb_func
SSL_CTX_get_keylog_callback(const SSL_CTX
*ctx
)
4844 return ctx
->keylog_callback
;
4847 static int nss_keylog_int(const char *prefix
,
4849 const uint8_t *parameter_1
,
4850 size_t parameter_1_len
,
4851 const uint8_t *parameter_2
,
4852 size_t parameter_2_len
)
4855 char *cursor
= NULL
;
4860 if (ssl
->ctx
->keylog_callback
== NULL
) return 1;
4863 * Our output buffer will contain the following strings, rendered with
4864 * space characters in between, terminated by a NULL character: first the
4865 * prefix, then the first parameter, then the second parameter. The
4866 * meaning of each parameter depends on the specific key material being
4867 * logged. Note that the first and second parameters are encoded in
4868 * hexadecimal, so we need a buffer that is twice their lengths.
4870 prefix_len
= strlen(prefix
);
4871 out_len
= prefix_len
+ (2*parameter_1_len
) + (2*parameter_2_len
) + 3;
4872 if ((out
= cursor
= OPENSSL_malloc(out_len
)) == NULL
) {
4873 SSLerr(SSL_F_NSS_KEYLOG_INT
, ERR_R_MALLOC_FAILURE
);
4877 strcpy(cursor
, prefix
);
4878 cursor
+= prefix_len
;
4881 for (i
= 0; i
< parameter_1_len
; i
++) {
4882 sprintf(cursor
, "%02x", parameter_1
[i
]);
4887 for (i
= 0; i
< parameter_2_len
; i
++) {
4888 sprintf(cursor
, "%02x", parameter_2
[i
]);
4893 ssl
->ctx
->keylog_callback(ssl
, (const char *)out
);
4899 int ssl_log_rsa_client_key_exchange(SSL
*ssl
,
4900 const uint8_t *encrypted_premaster
,
4901 size_t encrypted_premaster_len
,
4902 const uint8_t *premaster
,
4903 size_t premaster_len
)
4905 if (encrypted_premaster_len
< 8) {
4906 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE
, ERR_R_INTERNAL_ERROR
);
4910 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
4911 return nss_keylog_int("RSA",
4913 encrypted_premaster
,
4919 int ssl_log_secret(SSL
*ssl
,
4921 const uint8_t *secret
,
4924 return nss_keylog_int(label
,
4926 ssl
->s3
->client_random
,
4932 #define SSLV2_CIPHER_LEN 3
4934 int ssl_cache_cipherlist(SSL
*s
, PACKET
*cipher_suites
, int sslv2format
,
4939 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
4941 if (PACKET_remaining(cipher_suites
) == 0) {
4942 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
4943 *al
= SSL_AD_ILLEGAL_PARAMETER
;
4947 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
4948 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST
,
4949 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
4950 *al
= SSL_AD_DECODE_ERROR
;
4954 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4955 s
->s3
->tmp
.ciphers_raw
= NULL
;
4956 s
->s3
->tmp
.ciphers_rawlen
= 0;
4959 size_t numciphers
= PACKET_remaining(cipher_suites
) / n
;
4960 PACKET sslv2ciphers
= *cipher_suites
;
4961 unsigned int leadbyte
;
4965 * We store the raw ciphers list in SSLv3+ format so we need to do some
4966 * preprocessing to convert the list first. If there are any SSLv2 only
4967 * ciphersuites with a non-zero leading byte then we are going to
4968 * slightly over allocate because we won't store those. But that isn't a
4971 raw
= OPENSSL_malloc(numciphers
* TLS_CIPHER_LEN
);
4972 s
->s3
->tmp
.ciphers_raw
= raw
;
4974 *al
= SSL_AD_INTERNAL_ERROR
;
4977 for (s
->s3
->tmp
.ciphers_rawlen
= 0;
4978 PACKET_remaining(&sslv2ciphers
) > 0;
4979 raw
+= TLS_CIPHER_LEN
) {
4980 if (!PACKET_get_1(&sslv2ciphers
, &leadbyte
)
4982 && !PACKET_copy_bytes(&sslv2ciphers
, raw
,
4985 && !PACKET_forward(&sslv2ciphers
, TLS_CIPHER_LEN
))) {
4986 *al
= SSL_AD_DECODE_ERROR
;
4987 OPENSSL_free(s
->s3
->tmp
.ciphers_raw
);
4988 s
->s3
->tmp
.ciphers_raw
= NULL
;
4989 s
->s3
->tmp
.ciphers_rawlen
= 0;
4993 s
->s3
->tmp
.ciphers_rawlen
+= TLS_CIPHER_LEN
;
4995 } else if (!PACKET_memdup(cipher_suites
, &s
->s3
->tmp
.ciphers_raw
,
4996 &s
->s3
->tmp
.ciphers_rawlen
)) {
4997 *al
= SSL_AD_INTERNAL_ERROR
;
5005 int SSL_bytes_to_cipher_list(SSL
*s
, const unsigned char *bytes
, size_t len
,
5006 int isv2format
, STACK_OF(SSL_CIPHER
) **sk
,
5007 STACK_OF(SSL_CIPHER
) **scsvs
)
5012 if (!PACKET_buf_init(&pkt
, bytes
, len
))
5014 return bytes_to_cipher_list(s
, &pkt
, sk
, scsvs
, isv2format
, &alert
);
5017 int bytes_to_cipher_list(SSL
*s
, PACKET
*cipher_suites
,
5018 STACK_OF(SSL_CIPHER
) **skp
,
5019 STACK_OF(SSL_CIPHER
) **scsvs_out
,
5020 int sslv2format
, int *al
)
5022 const SSL_CIPHER
*c
;
5023 STACK_OF(SSL_CIPHER
) *sk
= NULL
;
5024 STACK_OF(SSL_CIPHER
) *scsvs
= NULL
;
5026 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5027 unsigned char cipher
[SSLV2_CIPHER_LEN
];
5029 n
= sslv2format
? SSLV2_CIPHER_LEN
: TLS_CIPHER_LEN
;
5031 if (PACKET_remaining(cipher_suites
) == 0) {
5032 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_NO_CIPHERS_SPECIFIED
);
5033 *al
= SSL_AD_ILLEGAL_PARAMETER
;
5037 if (PACKET_remaining(cipher_suites
) % n
!= 0) {
5038 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
,
5039 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST
);
5040 *al
= SSL_AD_DECODE_ERROR
;
5044 sk
= sk_SSL_CIPHER_new_null();
5045 scsvs
= sk_SSL_CIPHER_new_null();
5046 if (sk
== NULL
|| scsvs
== NULL
) {
5047 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5048 *al
= SSL_AD_INTERNAL_ERROR
;
5052 while (PACKET_copy_bytes(cipher_suites
, cipher
, n
)) {
5054 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5055 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5056 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5058 if (sslv2format
&& cipher
[0] != '\0')
5061 /* For SSLv2-compat, ignore leading 0-byte. */
5062 c
= ssl_get_cipher_by_char(s
, sslv2format
? &cipher
[1] : cipher
, 1);
5064 if ((c
->valid
&& !sk_SSL_CIPHER_push(sk
, c
)) ||
5065 (!c
->valid
&& !sk_SSL_CIPHER_push(scsvs
, c
))) {
5066 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, ERR_R_MALLOC_FAILURE
);
5067 *al
= SSL_AD_INTERNAL_ERROR
;
5072 if (PACKET_remaining(cipher_suites
) > 0) {
5073 *al
= SSL_AD_DECODE_ERROR
;
5074 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST
, SSL_R_BAD_LENGTH
);
5081 sk_SSL_CIPHER_free(sk
);
5082 if (scsvs_out
!= NULL
)
5085 sk_SSL_CIPHER_free(scsvs
);
5088 sk_SSL_CIPHER_free(sk
);
5089 sk_SSL_CIPHER_free(scsvs
);
5093 int SSL_CTX_set_max_early_data(SSL_CTX
*ctx
, uint32_t max_early_data
)
5095 ctx
->max_early_data
= max_early_data
;
5100 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX
*ctx
)
5102 return ctx
->max_early_data
;
5105 int SSL_set_max_early_data(SSL
*s
, uint32_t max_early_data
)
5107 s
->max_early_data
= max_early_data
;
5112 uint32_t SSL_get_max_early_data(const SSL
*s
)
5114 return s
->max_early_data
;
5117 int ssl_randbytes(SSL
*s
, unsigned char *rnd
, size_t size
)
5119 if (s
->drbg
!= NULL
)
5120 return RAND_DRBG_generate(s
->drbg
, rnd
, size
, 0, NULL
, 0);
5121 return RAND_bytes(rnd
, (int)size
);