2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 * ECC cipher suite support in OpenSSL originally developed by
13 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
15 /* ====================================================================
16 * Copyright 2005 Nokia. All rights reserved.
18 * The portions of the attached software ("Contribution") is developed by
19 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
22 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
23 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
24 * support (see RFC 4279) to OpenSSL.
26 * No patent licenses or other rights except those expressly stated in
27 * the OpenSSL open source license shall be deemed granted or received
28 * expressly, by implication, estoppel, or otherwise.
30 * No assurances are provided by Nokia that the Contribution does not
31 * infringe the patent or other intellectual property rights of any third
32 * party or that the license provides you with all the necessary rights
33 * to make use of the Contribution.
35 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
36 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
37 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
38 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
45 #include <openssl/objects.h>
46 #include <openssl/lhash.h>
47 #include <openssl/x509v3.h>
48 #include <openssl/rand.h>
49 #include <openssl/ocsp.h>
50 #include <openssl/dh.h>
51 #include <openssl/engine.h>
52 #include <openssl/async.h>
53 #include <openssl/ct.h>
55 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
57 SSL3_ENC_METHOD ssl3_undef_enc_method = {
59 * evil casts, but these functions are only called if there's a library
62 (int (*)(SSL *, SSL3_RECORD *, unsigned int, int))ssl_undefined_function,
63 (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function,
64 ssl_undefined_function,
65 (int (*)(SSL *, unsigned char *, unsigned char *, int))
66 ssl_undefined_function,
67 (int (*)(SSL *, int))ssl_undefined_function,
68 (int (*)(SSL *, const char *, int, unsigned char *))
69 ssl_undefined_function,
70 0, /* finish_mac_length */
71 NULL, /* client_finished_label */
72 0, /* client_finished_label_len */
73 NULL, /* server_finished_label */
74 0, /* server_finished_label_len */
75 (int (*)(int))ssl_undefined_function,
76 (int (*)(SSL *, unsigned char *, size_t, const char *,
77 size_t, const unsigned char *, size_t,
78 int use_context))ssl_undefined_function,
81 struct ssl_async_args {
85 enum { READFUNC, WRITEFUNC, OTHERFUNC} type;
87 int (*func_read)(SSL *, void *, int);
88 int (*func_write)(SSL *, const void *, int);
89 int (*func_other)(SSL *);
98 { DANETLS_MATCHING_FULL, 0, NID_undef },
99 { DANETLS_MATCHING_2256, 1, NID_sha256 },
100 { DANETLS_MATCHING_2512, 2, NID_sha512 },
103 static int dane_ctx_enable(struct dane_ctx_st *dctx)
105 const EVP_MD **mdevp;
107 uint8_t mdmax = DANETLS_MATCHING_LAST;
108 int n = ((int) mdmax) + 1; /* int to handle PrivMatch(255) */
111 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
112 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
114 if (mdord == NULL || mdevp == NULL) {
117 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
121 /* Install default entries */
122 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
125 if (dane_mds[i].nid == NID_undef ||
126 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
128 mdevp[dane_mds[i].mtype] = md;
129 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
139 static void dane_ctx_final(struct dane_ctx_st *dctx)
141 OPENSSL_free(dctx->mdevp);
144 OPENSSL_free(dctx->mdord);
149 static void tlsa_free(danetls_record *t)
153 OPENSSL_free(t->data);
154 EVP_PKEY_free(t->spki);
158 static void dane_final(SSL_DANE *dane)
160 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
163 sk_X509_pop_free(dane->certs, X509_free);
166 X509_free(dane->mcert);
174 * dane_copy - Copy dane configuration, sans verification state.
176 static int ssl_dane_dup(SSL *to, SSL *from)
181 if (!DANETLS_ENABLED(&from->dane))
184 dane_final(&to->dane);
185 to->dane.dctx = &to->ctx->dane;
186 to->dane.trecs = sk_danetls_record_new_null();
188 if (to->dane.trecs == NULL) {
189 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
193 num = sk_danetls_record_num(from->dane.trecs);
194 for (i = 0; i < num; ++i) {
195 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
197 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
198 t->data, t->dlen) <= 0)
204 static int dane_mtype_set(
205 struct dane_ctx_st *dctx,
212 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
213 SSLerr(SSL_F_DANE_MTYPE_SET,
214 SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
218 if (mtype > dctx->mdmax) {
219 const EVP_MD **mdevp;
221 int n = ((int) mtype) + 1;
223 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
225 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
230 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
232 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
237 /* Zero-fill any gaps */
238 for (i = dctx->mdmax+1; i < mtype; ++i) {
246 dctx->mdevp[mtype] = md;
247 /* Coerce ordinal of disabled matching types to 0 */
248 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
253 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
255 if (mtype > dane->dctx->mdmax)
257 return dane->dctx->mdevp[mtype];
260 static int dane_tlsa_add(
269 const EVP_MD *md = NULL;
270 int ilen = (int)dlen;
274 if (dane->trecs == NULL) {
275 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
279 if (ilen < 0 || dlen != (size_t)ilen) {
280 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
284 if (usage > DANETLS_USAGE_LAST) {
285 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
289 if (selector > DANETLS_SELECTOR_LAST) {
290 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
294 if (mtype != DANETLS_MATCHING_FULL) {
295 md = tlsa_md_get(dane, mtype);
297 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
302 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
303 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
307 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
311 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
312 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
317 t->selector = selector;
319 t->data = OPENSSL_malloc(ilen);
320 if (t->data == NULL) {
322 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
325 memcpy(t->data, data, ilen);
328 /* Validate and cache full certificate or public key */
329 if (mtype == DANETLS_MATCHING_FULL) {
330 const unsigned char *p = data;
332 EVP_PKEY *pkey = NULL;
335 case DANETLS_SELECTOR_CERT:
336 if (!d2i_X509(&cert, &p, dlen) || p < data ||
337 dlen != (size_t)(p - data)) {
339 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
342 if (X509_get0_pubkey(cert) == NULL) {
344 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
348 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
354 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
355 * records that contain full certificates of trust-anchors that are
356 * not present in the wire chain. For usage PKIX-TA(0), we augment
357 * the chain with untrusted Full(0) certificates from DNS, in case
358 * they are missing from the chain.
360 if ((dane->certs == NULL &&
361 (dane->certs = sk_X509_new_null()) == NULL) ||
362 !sk_X509_push(dane->certs, cert)) {
363 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
370 case DANETLS_SELECTOR_SPKI:
371 if (!d2i_PUBKEY(&pkey, &p, dlen) || p < data ||
372 dlen != (size_t)(p - data)) {
374 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
379 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
380 * records that contain full bare keys of trust-anchors that are
381 * not present in the wire chain.
383 if (usage == DANETLS_USAGE_DANE_TA)
392 * Find the right insertion point for the new record.
394 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
395 * they can be processed first, as they require no chain building, and no
396 * expiration or hostname checks. Because DANE-EE(3) is numerically
397 * largest, this is accomplished via descending sort by "usage".
399 * We also sort in descending order by matching ordinal to simplify
400 * the implementation of digest agility in the verification code.
402 * The choice of order for the selector is not significant, so we
403 * use the same descending order for consistency.
405 num = sk_danetls_record_num(dane->trecs);
406 for (i = 0; i < num; ++i) {
407 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
409 if (rec->usage > usage)
411 if (rec->usage < usage)
413 if (rec->selector > selector)
415 if (rec->selector < selector)
417 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
422 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
424 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
427 dane->umask |= DANETLS_USAGE_BIT(usage);
432 static void clear_ciphers(SSL *s)
434 /* clear the current cipher */
435 ssl_clear_cipher_ctx(s);
436 ssl_clear_hash_ctx(&s->read_hash);
437 ssl_clear_hash_ctx(&s->write_hash);
440 int SSL_clear(SSL *s)
442 if (s->method == NULL) {
443 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
447 if (ssl_clear_bad_session(s)) {
448 SSL_SESSION_free(s->session);
456 if (s->renegotiate) {
457 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
461 ossl_statem_clear(s);
463 s->version = s->method->version;
464 s->client_version = s->version;
465 s->rwstate = SSL_NOTHING;
467 BUF_MEM_free(s->init_buf);
472 /* Reset DANE verification result state */
475 X509_free(s->dane.mcert);
476 s->dane.mcert = NULL;
477 s->dane.mtlsa = NULL;
479 /* Clear the verification result peername */
480 X509_VERIFY_PARAM_move_peername(s->param, NULL);
483 * Check to see if we were changed into a different method, if so, revert
484 * back if we are not doing session-id reuse.
486 if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
487 && (s->method != s->ctx->method)) {
488 s->method->ssl_free(s);
489 s->method = s->ctx->method;
490 if (!s->method->ssl_new(s))
493 s->method->ssl_clear(s);
495 RECORD_LAYER_clear(&s->rlayer);
500 /** Used to change an SSL_CTXs default SSL method type */
501 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
503 STACK_OF(SSL_CIPHER) *sk;
507 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
508 &(ctx->cipher_list_by_id),
509 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
510 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
511 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
512 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
518 SSL *SSL_new(SSL_CTX *ctx)
523 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
526 if (ctx->method == NULL) {
527 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
531 s = OPENSSL_zalloc(sizeof(*s));
535 s->lock = CRYPTO_THREAD_lock_new();
536 if (s->lock == NULL) {
537 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
542 RECORD_LAYER_init(&s->rlayer, s);
544 s->options = ctx->options;
545 s->min_proto_version = ctx->min_proto_version;
546 s->max_proto_version = ctx->max_proto_version;
548 s->max_cert_list = ctx->max_cert_list;
552 * Earlier library versions used to copy the pointer to the CERT, not
553 * its contents; only when setting new parameters for the per-SSL
554 * copy, ssl_cert_new would be called (and the direct reference to
555 * the per-SSL_CTX settings would be lost, but those still were
556 * indirectly accessed for various purposes, and for that reason they
557 * used to be known as s->ctx->default_cert). Now we don't look at the
558 * SSL_CTX's CERT after having duplicated it once.
560 s->cert = ssl_cert_dup(ctx->cert);
564 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
565 s->msg_callback = ctx->msg_callback;
566 s->msg_callback_arg = ctx->msg_callback_arg;
567 s->verify_mode = ctx->verify_mode;
568 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
569 s->sid_ctx_length = ctx->sid_ctx_length;
570 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
571 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
572 s->verify_callback = ctx->default_verify_callback;
573 s->generate_session_id = ctx->generate_session_id;
575 s->param = X509_VERIFY_PARAM_new();
576 if (s->param == NULL)
578 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
579 s->quiet_shutdown = ctx->quiet_shutdown;
580 s->max_send_fragment = ctx->max_send_fragment;
581 s->split_send_fragment = ctx->split_send_fragment;
582 s->max_pipelines = ctx->max_pipelines;
583 if (s->max_pipelines > 1)
584 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
585 if (ctx->default_read_buf_len > 0)
586 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
590 s->tlsext_debug_cb = 0;
591 s->tlsext_debug_arg = NULL;
592 s->tlsext_ticket_expected = 0;
593 s->tlsext_status_type = ctx->tlsext_status_type;
594 s->tlsext_status_expected = 0;
595 s->tlsext_ocsp_ids = NULL;
596 s->tlsext_ocsp_exts = NULL;
597 s->tlsext_ocsp_resp = NULL;
598 s->tlsext_ocsp_resplen = -1;
600 s->initial_ctx = ctx;
601 # ifndef OPENSSL_NO_EC
602 if (ctx->tlsext_ecpointformatlist) {
603 s->tlsext_ecpointformatlist =
604 OPENSSL_memdup(ctx->tlsext_ecpointformatlist,
605 ctx->tlsext_ecpointformatlist_length);
606 if (!s->tlsext_ecpointformatlist)
608 s->tlsext_ecpointformatlist_length =
609 ctx->tlsext_ecpointformatlist_length;
611 if (ctx->tlsext_ellipticcurvelist) {
612 s->tlsext_ellipticcurvelist =
613 OPENSSL_memdup(ctx->tlsext_ellipticcurvelist,
614 ctx->tlsext_ellipticcurvelist_length);
615 if (!s->tlsext_ellipticcurvelist)
617 s->tlsext_ellipticcurvelist_length =
618 ctx->tlsext_ellipticcurvelist_length;
621 # ifndef OPENSSL_NO_NEXTPROTONEG
622 s->next_proto_negotiated = NULL;
625 if (s->ctx->alpn_client_proto_list) {
626 s->alpn_client_proto_list =
627 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
628 if (s->alpn_client_proto_list == NULL)
630 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
631 s->ctx->alpn_client_proto_list_len);
632 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
635 s->verified_chain = NULL;
636 s->verify_result = X509_V_OK;
638 s->default_passwd_callback = ctx->default_passwd_callback;
639 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
641 s->method = ctx->method;
643 if (!s->method->ssl_new(s))
646 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
651 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
654 #ifndef OPENSSL_NO_PSK
655 s->psk_client_callback = ctx->psk_client_callback;
656 s->psk_server_callback = ctx->psk_server_callback;
661 #ifndef OPENSSL_NO_CT
662 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
663 ctx->ct_validation_callback_arg))
670 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
674 int SSL_is_dtls(const SSL *s)
676 return SSL_IS_DTLS(s) ? 1 : 0;
679 int SSL_up_ref(SSL *s)
683 if (CRYPTO_atomic_add(&s->references, 1, &i, s->lock) <= 0)
686 REF_PRINT_COUNT("SSL", s);
687 REF_ASSERT_ISNT(i < 2);
688 return ((i > 1) ? 1 : 0);
691 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
692 unsigned int sid_ctx_len)
694 if (sid_ctx_len > sizeof ctx->sid_ctx) {
695 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
696 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
699 ctx->sid_ctx_length = sid_ctx_len;
700 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
705 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
706 unsigned int sid_ctx_len)
708 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
709 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
710 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
713 ssl->sid_ctx_length = sid_ctx_len;
714 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
719 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
721 CRYPTO_THREAD_write_lock(ctx->lock);
722 ctx->generate_session_id = cb;
723 CRYPTO_THREAD_unlock(ctx->lock);
727 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
729 CRYPTO_THREAD_write_lock(ssl->lock);
730 ssl->generate_session_id = cb;
731 CRYPTO_THREAD_unlock(ssl->lock);
735 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
739 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
740 * we can "construct" a session to give us the desired check - ie. to
741 * find if there's a session in the hash table that would conflict with
742 * any new session built out of this id/id_len and the ssl_version in use
747 if (id_len > sizeof r.session_id)
750 r.ssl_version = ssl->version;
751 r.session_id_length = id_len;
752 memcpy(r.session_id, id, id_len);
754 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
755 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
756 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
760 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
762 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
765 int SSL_set_purpose(SSL *s, int purpose)
767 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
770 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
772 return X509_VERIFY_PARAM_set_trust(s->param, trust);
775 int SSL_set_trust(SSL *s, int trust)
777 return X509_VERIFY_PARAM_set_trust(s->param, trust);
780 int SSL_set1_host(SSL *s, const char *hostname)
782 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
785 int SSL_add1_host(SSL *s, const char *hostname)
787 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
790 void SSL_set_hostflags(SSL *s, unsigned int flags)
792 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
795 const char *SSL_get0_peername(SSL *s)
797 return X509_VERIFY_PARAM_get0_peername(s->param);
800 int SSL_CTX_dane_enable(SSL_CTX *ctx)
802 return dane_ctx_enable(&ctx->dane);
805 int SSL_dane_enable(SSL *s, const char *basedomain)
807 SSL_DANE *dane = &s->dane;
809 if (s->ctx->dane.mdmax == 0) {
810 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
813 if (dane->trecs != NULL) {
814 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
819 * Default SNI name. This rejects empty names, while set1_host below
820 * accepts them and disables host name checks. To avoid side-effects with
821 * invalid input, set the SNI name first.
823 if (s->tlsext_hostname == NULL) {
824 if (!SSL_set_tlsext_host_name(s, basedomain)) {
825 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
830 /* Primary RFC6125 reference identifier */
831 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
832 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
838 dane->dctx = &s->ctx->dane;
839 dane->trecs = sk_danetls_record_new_null();
841 if (dane->trecs == NULL) {
842 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
848 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
850 SSL_DANE *dane = &s->dane;
852 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
856 *mcert = dane->mcert;
858 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
863 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
864 uint8_t *mtype, unsigned const char **data, size_t *dlen)
866 SSL_DANE *dane = &s->dane;
868 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
872 *usage = dane->mtlsa->usage;
874 *selector = dane->mtlsa->selector;
876 *mtype = dane->mtlsa->mtype;
878 *data = dane->mtlsa->data;
880 *dlen = dane->mtlsa->dlen;
885 SSL_DANE *SSL_get0_dane(SSL *s)
890 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
891 uint8_t mtype, unsigned char *data, size_t dlen)
893 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
896 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype, uint8_t ord)
898 return dane_mtype_set(&ctx->dane, md, mtype, ord);
901 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
903 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
906 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
908 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
911 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
916 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
921 void SSL_certs_clear(SSL *s)
923 ssl_cert_clear_certs(s->cert);
926 void SSL_free(SSL *s)
933 CRYPTO_atomic_add(&s->references, -1, &i, s->lock);
934 REF_PRINT_COUNT("SSL", s);
937 REF_ASSERT_ISNT(i < 0);
939 X509_VERIFY_PARAM_free(s->param);
940 dane_final(&s->dane);
941 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
943 if (s->bbio != NULL) {
944 /* If the buffering BIO is in place, pop it off */
945 if (s->bbio == s->wbio) {
946 s->wbio = BIO_pop(s->wbio);
951 if (s->wbio != s->rbio)
952 BIO_free_all(s->wbio);
953 BIO_free_all(s->rbio);
955 BUF_MEM_free(s->init_buf);
957 /* add extra stuff */
958 sk_SSL_CIPHER_free(s->cipher_list);
959 sk_SSL_CIPHER_free(s->cipher_list_by_id);
961 /* Make the next call work :-) */
962 if (s->session != NULL) {
963 ssl_clear_bad_session(s);
964 SSL_SESSION_free(s->session);
969 ssl_cert_free(s->cert);
970 /* Free up if allocated */
972 OPENSSL_free(s->tlsext_hostname);
973 SSL_CTX_free(s->initial_ctx);
974 #ifndef OPENSSL_NO_EC
975 OPENSSL_free(s->tlsext_ecpointformatlist);
976 OPENSSL_free(s->tlsext_ellipticcurvelist);
977 #endif /* OPENSSL_NO_EC */
978 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
979 #ifndef OPENSSL_NO_OCSP
980 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
982 #ifndef OPENSSL_NO_CT
983 SCT_LIST_free(s->scts);
984 OPENSSL_free(s->tlsext_scts);
986 OPENSSL_free(s->tlsext_ocsp_resp);
987 OPENSSL_free(s->alpn_client_proto_list);
989 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
991 sk_X509_pop_free(s->verified_chain, X509_free);
993 if (s->method != NULL)
994 s->method->ssl_free(s);
996 RECORD_LAYER_release(&s->rlayer);
998 SSL_CTX_free(s->ctx);
1000 ASYNC_WAIT_CTX_free(s->waitctx);
1002 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1003 OPENSSL_free(s->next_proto_negotiated);
1006 #ifndef OPENSSL_NO_SRTP
1007 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1010 CRYPTO_THREAD_lock_free(s->lock);
1015 void SSL_set_rbio(SSL *s, BIO *rbio)
1017 if (s->rbio != rbio)
1018 BIO_free_all(s->rbio);
1022 void SSL_set_wbio(SSL *s, BIO *wbio)
1025 * If the output buffering BIO is still in place, remove it
1027 if (s->bbio != NULL) {
1028 if (s->wbio == s->bbio) {
1029 s->wbio = BIO_next(s->wbio);
1030 BIO_set_next(s->bbio, NULL);
1033 if (s->wbio != wbio && s->rbio != s->wbio)
1034 BIO_free_all(s->wbio);
1038 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1040 SSL_set_wbio(s, wbio);
1041 SSL_set_rbio(s, rbio);
1044 BIO *SSL_get_rbio(const SSL *s)
1049 BIO *SSL_get_wbio(const SSL *s)
1054 int SSL_get_fd(const SSL *s)
1056 return (SSL_get_rfd(s));
1059 int SSL_get_rfd(const SSL *s)
1064 b = SSL_get_rbio(s);
1065 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1067 BIO_get_fd(r, &ret);
1071 int SSL_get_wfd(const SSL *s)
1076 b = SSL_get_wbio(s);
1077 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1079 BIO_get_fd(r, &ret);
1083 #ifndef OPENSSL_NO_SOCK
1084 int SSL_set_fd(SSL *s, int fd)
1089 bio = BIO_new(BIO_s_socket());
1092 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1095 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1096 SSL_set_bio(s, bio, bio);
1102 int SSL_set_wfd(SSL *s, int fd)
1107 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
1108 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
1109 bio = BIO_new(BIO_s_socket());
1112 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1115 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1116 SSL_set_bio(s, SSL_get_rbio(s), bio);
1118 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
1124 int SSL_set_rfd(SSL *s, int fd)
1129 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
1130 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
1131 bio = BIO_new(BIO_s_socket());
1134 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1137 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1138 SSL_set_bio(s, bio, SSL_get_wbio(s));
1140 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
1147 /* return length of latest Finished message we sent, copy to 'buf' */
1148 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1152 if (s->s3 != NULL) {
1153 ret = s->s3->tmp.finish_md_len;
1156 memcpy(buf, s->s3->tmp.finish_md, count);
1161 /* return length of latest Finished message we expected, copy to 'buf' */
1162 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1166 if (s->s3 != NULL) {
1167 ret = s->s3->tmp.peer_finish_md_len;
1170 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1175 int SSL_get_verify_mode(const SSL *s)
1177 return (s->verify_mode);
1180 int SSL_get_verify_depth(const SSL *s)
1182 return X509_VERIFY_PARAM_get_depth(s->param);
1185 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1186 return (s->verify_callback);
1189 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1191 return (ctx->verify_mode);
1194 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1196 return X509_VERIFY_PARAM_get_depth(ctx->param);
1199 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1200 return (ctx->default_verify_callback);
1203 void SSL_set_verify(SSL *s, int mode,
1204 int (*callback) (int ok, X509_STORE_CTX *ctx))
1206 s->verify_mode = mode;
1207 if (callback != NULL)
1208 s->verify_callback = callback;
1211 void SSL_set_verify_depth(SSL *s, int depth)
1213 X509_VERIFY_PARAM_set_depth(s->param, depth);
1216 void SSL_set_read_ahead(SSL *s, int yes)
1218 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1221 int SSL_get_read_ahead(const SSL *s)
1223 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1226 int SSL_pending(const SSL *s)
1229 * SSL_pending cannot work properly if read-ahead is enabled
1230 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1231 * impossible to fix since SSL_pending cannot report errors that may be
1232 * observed while scanning the new data. (Note that SSL_pending() is
1233 * often used as a boolean value, so we'd better not return -1.)
1235 return (s->method->ssl_pending(s));
1238 int SSL_has_pending(const SSL *s)
1241 * Similar to SSL_pending() but returns a 1 to indicate that we have
1242 * unprocessed data available or 0 otherwise (as opposed to the number of
1243 * bytes available). Unlike SSL_pending() this will take into account
1244 * read_ahead data. A 1 return simply indicates that we have unprocessed
1245 * data. That data may not result in any application data, or we may fail
1246 * to parse the records for some reason.
1251 return RECORD_LAYER_read_pending(&s->rlayer);
1254 X509 *SSL_get_peer_certificate(const SSL *s)
1258 if ((s == NULL) || (s->session == NULL))
1261 r = s->session->peer;
1271 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1275 if ((s == NULL) || (s->session == NULL))
1278 r = s->session->peer_chain;
1281 * If we are a client, cert_chain includes the peer's own certificate; if
1282 * we are a server, it does not.
1289 * Now in theory, since the calling process own 't' it should be safe to
1290 * modify. We need to be able to read f without being hassled
1292 int SSL_copy_session_id(SSL *t, const SSL *f)
1295 /* Do we need to to SSL locking? */
1296 if (!SSL_set_session(t, SSL_get_session(f))) {
1301 * what if we are setup for one protocol version but want to talk another
1303 if (t->method != f->method) {
1304 t->method->ssl_free(t);
1305 t->method = f->method;
1306 if (t->method->ssl_new(t) == 0)
1310 CRYPTO_atomic_add(&f->cert->references, 1, &i, f->cert->lock);
1311 ssl_cert_free(t->cert);
1313 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
1320 /* Fix this so it checks all the valid key/cert options */
1321 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1323 if ((ctx == NULL) ||
1324 (ctx->cert->key->x509 == NULL)) {
1325 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1326 SSL_R_NO_CERTIFICATE_ASSIGNED);
1329 if (ctx->cert->key->privatekey == NULL) {
1330 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1331 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1334 return (X509_check_private_key
1335 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1338 /* Fix this function so that it takes an optional type parameter */
1339 int SSL_check_private_key(const SSL *ssl)
1342 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1345 if (ssl->cert->key->x509 == NULL) {
1346 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1349 if (ssl->cert->key->privatekey == NULL) {
1350 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1353 return (X509_check_private_key(ssl->cert->key->x509,
1354 ssl->cert->key->privatekey));
1357 int SSL_waiting_for_async(SSL *s)
1365 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1367 ASYNC_WAIT_CTX *ctx = s->waitctx;
1371 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1374 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1375 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1377 ASYNC_WAIT_CTX *ctx = s->waitctx;
1381 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1385 int SSL_accept(SSL *s)
1387 if (s->handshake_func == NULL) {
1388 /* Not properly initialized yet */
1389 SSL_set_accept_state(s);
1392 return SSL_do_handshake(s);
1395 int SSL_connect(SSL *s)
1397 if (s->handshake_func == NULL) {
1398 /* Not properly initialized yet */
1399 SSL_set_connect_state(s);
1402 return SSL_do_handshake(s);
1405 long SSL_get_default_timeout(const SSL *s)
1407 return (s->method->get_timeout());
1410 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1411 int (*func)(void *)) {
1413 if (s->waitctx == NULL) {
1414 s->waitctx = ASYNC_WAIT_CTX_new();
1415 if (s->waitctx == NULL)
1418 switch(ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1419 sizeof(struct ssl_async_args))) {
1421 s->rwstate = SSL_NOTHING;
1422 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1425 s->rwstate = SSL_ASYNC_PAUSED;
1428 s->rwstate = SSL_ASYNC_NO_JOBS;
1434 s->rwstate = SSL_NOTHING;
1435 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1436 /* Shouldn't happen */
1441 static int ssl_io_intern(void *vargs)
1443 struct ssl_async_args *args;
1448 args = (struct ssl_async_args *)vargs;
1452 switch (args->type) {
1454 return args->f.func_read(s, buf, num);
1456 return args->f.func_write(s, buf, num);
1458 return args->f.func_other(s);
1463 int SSL_read(SSL *s, void *buf, int num)
1465 if (s->handshake_func == NULL) {
1466 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1470 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1471 s->rwstate = SSL_NOTHING;
1475 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1476 struct ssl_async_args args;
1481 args.type = READFUNC;
1482 args.f.func_read = s->method->ssl_read;
1484 return ssl_start_async_job(s, &args, ssl_io_intern);
1486 return s->method->ssl_read(s, buf, num);
1490 int SSL_peek(SSL *s, void *buf, int num)
1492 if (s->handshake_func == NULL) {
1493 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1497 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1500 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1501 struct ssl_async_args args;
1506 args.type = READFUNC;
1507 args.f.func_read = s->method->ssl_peek;
1509 return ssl_start_async_job(s, &args, ssl_io_intern);
1511 return s->method->ssl_peek(s, buf, num);
1515 int SSL_write(SSL *s, const void *buf, int num)
1517 if (s->handshake_func == NULL) {
1518 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1522 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1523 s->rwstate = SSL_NOTHING;
1524 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1528 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1529 struct ssl_async_args args;
1532 args.buf = (void *)buf;
1534 args.type = WRITEFUNC;
1535 args.f.func_write = s->method->ssl_write;
1537 return ssl_start_async_job(s, &args, ssl_io_intern);
1539 return s->method->ssl_write(s, buf, num);
1543 int SSL_shutdown(SSL *s)
1546 * Note that this function behaves differently from what one might
1547 * expect. Return values are 0 for no success (yet), 1 for success; but
1548 * calling it once is usually not enough, even if blocking I/O is used
1549 * (see ssl3_shutdown).
1552 if (s->handshake_func == NULL) {
1553 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1557 if (!SSL_in_init(s)) {
1558 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1559 struct ssl_async_args args;
1562 args.type = OTHERFUNC;
1563 args.f.func_other = s->method->ssl_shutdown;
1565 return ssl_start_async_job(s, &args, ssl_io_intern);
1567 return s->method->ssl_shutdown(s);
1570 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1575 int SSL_renegotiate(SSL *s)
1577 if (s->renegotiate == 0)
1582 return (s->method->ssl_renegotiate(s));
1585 int SSL_renegotiate_abbreviated(SSL *s)
1587 if (s->renegotiate == 0)
1592 return (s->method->ssl_renegotiate(s));
1595 int SSL_renegotiate_pending(SSL *s)
1598 * becomes true when negotiation is requested; false again once a
1599 * handshake has finished
1601 return (s->renegotiate != 0);
1604 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1609 case SSL_CTRL_GET_READ_AHEAD:
1610 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1611 case SSL_CTRL_SET_READ_AHEAD:
1612 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1613 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1616 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1617 s->msg_callback_arg = parg;
1621 return (s->mode |= larg);
1622 case SSL_CTRL_CLEAR_MODE:
1623 return (s->mode &= ~larg);
1624 case SSL_CTRL_GET_MAX_CERT_LIST:
1625 return (s->max_cert_list);
1626 case SSL_CTRL_SET_MAX_CERT_LIST:
1627 l = s->max_cert_list;
1628 s->max_cert_list = larg;
1630 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1631 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1633 s->max_send_fragment = larg;
1634 if (s->max_send_fragment < s->split_send_fragment)
1635 s->split_send_fragment = s->max_send_fragment;
1637 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1638 if ((unsigned int)larg > s->max_send_fragment || larg == 0)
1640 s->split_send_fragment = larg;
1642 case SSL_CTRL_SET_MAX_PIPELINES:
1643 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1645 s->max_pipelines = larg;
1647 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
1649 case SSL_CTRL_GET_RI_SUPPORT:
1651 return s->s3->send_connection_binding;
1654 case SSL_CTRL_CERT_FLAGS:
1655 return (s->cert->cert_flags |= larg);
1656 case SSL_CTRL_CLEAR_CERT_FLAGS:
1657 return (s->cert->cert_flags &= ~larg);
1659 case SSL_CTRL_GET_RAW_CIPHERLIST:
1661 if (s->s3->tmp.ciphers_raw == NULL)
1663 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1664 return (int)s->s3->tmp.ciphers_rawlen;
1666 return TLS_CIPHER_LEN;
1668 case SSL_CTRL_GET_EXTMS_SUPPORT:
1669 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1671 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1675 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1676 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1677 &s->min_proto_version);
1678 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1679 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1680 &s->max_proto_version);
1682 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1686 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1689 case SSL_CTRL_SET_MSG_CALLBACK:
1690 s->msg_callback = (void (*)
1691 (int write_p, int version, int content_type,
1692 const void *buf, size_t len, SSL *ssl,
1697 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1701 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1703 return ctx->sessions;
1706 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1709 /* For some cases with ctx == NULL perform syntax checks */
1712 #ifndef OPENSSL_NO_EC
1713 case SSL_CTRL_SET_CURVES_LIST:
1714 return tls1_set_curves_list(NULL, NULL, parg);
1716 case SSL_CTRL_SET_SIGALGS_LIST:
1717 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1718 return tls1_set_sigalgs_list(NULL, parg, 0);
1725 case SSL_CTRL_GET_READ_AHEAD:
1726 return (ctx->read_ahead);
1727 case SSL_CTRL_SET_READ_AHEAD:
1728 l = ctx->read_ahead;
1729 ctx->read_ahead = larg;
1732 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1733 ctx->msg_callback_arg = parg;
1736 case SSL_CTRL_GET_MAX_CERT_LIST:
1737 return (ctx->max_cert_list);
1738 case SSL_CTRL_SET_MAX_CERT_LIST:
1739 l = ctx->max_cert_list;
1740 ctx->max_cert_list = larg;
1743 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1744 l = ctx->session_cache_size;
1745 ctx->session_cache_size = larg;
1747 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1748 return (ctx->session_cache_size);
1749 case SSL_CTRL_SET_SESS_CACHE_MODE:
1750 l = ctx->session_cache_mode;
1751 ctx->session_cache_mode = larg;
1753 case SSL_CTRL_GET_SESS_CACHE_MODE:
1754 return (ctx->session_cache_mode);
1756 case SSL_CTRL_SESS_NUMBER:
1757 return (lh_SSL_SESSION_num_items(ctx->sessions));
1758 case SSL_CTRL_SESS_CONNECT:
1759 return (ctx->stats.sess_connect);
1760 case SSL_CTRL_SESS_CONNECT_GOOD:
1761 return (ctx->stats.sess_connect_good);
1762 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1763 return (ctx->stats.sess_connect_renegotiate);
1764 case SSL_CTRL_SESS_ACCEPT:
1765 return (ctx->stats.sess_accept);
1766 case SSL_CTRL_SESS_ACCEPT_GOOD:
1767 return (ctx->stats.sess_accept_good);
1768 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1769 return (ctx->stats.sess_accept_renegotiate);
1770 case SSL_CTRL_SESS_HIT:
1771 return (ctx->stats.sess_hit);
1772 case SSL_CTRL_SESS_CB_HIT:
1773 return (ctx->stats.sess_cb_hit);
1774 case SSL_CTRL_SESS_MISSES:
1775 return (ctx->stats.sess_miss);
1776 case SSL_CTRL_SESS_TIMEOUTS:
1777 return (ctx->stats.sess_timeout);
1778 case SSL_CTRL_SESS_CACHE_FULL:
1779 return (ctx->stats.sess_cache_full);
1781 return (ctx->mode |= larg);
1782 case SSL_CTRL_CLEAR_MODE:
1783 return (ctx->mode &= ~larg);
1784 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1785 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1787 ctx->max_send_fragment = larg;
1788 if (ctx->max_send_fragment < ctx->split_send_fragment)
1789 ctx->split_send_fragment = ctx->max_send_fragment;
1791 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1792 if ((unsigned int)larg > ctx->max_send_fragment || larg == 0)
1794 ctx->split_send_fragment = larg;
1796 case SSL_CTRL_SET_MAX_PIPELINES:
1797 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1799 ctx->max_pipelines = larg;
1801 case SSL_CTRL_CERT_FLAGS:
1802 return (ctx->cert->cert_flags |= larg);
1803 case SSL_CTRL_CLEAR_CERT_FLAGS:
1804 return (ctx->cert->cert_flags &= ~larg);
1805 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1806 return ssl_set_version_bound(ctx->method->version, (int)larg,
1807 &ctx->min_proto_version);
1808 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1809 return ssl_set_version_bound(ctx->method->version, (int)larg,
1810 &ctx->max_proto_version);
1812 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1816 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1819 case SSL_CTRL_SET_MSG_CALLBACK:
1820 ctx->msg_callback = (void (*)
1821 (int write_p, int version, int content_type,
1822 const void *buf, size_t len, SSL *ssl,
1827 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1831 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1840 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1841 const SSL_CIPHER *const *bp)
1843 if ((*ap)->id > (*bp)->id)
1845 if ((*ap)->id < (*bp)->id)
1850 /** return a STACK of the ciphers available for the SSL and in order of
1852 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1855 if (s->cipher_list != NULL) {
1856 return (s->cipher_list);
1857 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1858 return (s->ctx->cipher_list);
1864 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
1866 if ((s == NULL) || (s->session == NULL) || !s->server)
1868 return s->session->ciphers;
1871 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1873 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1875 ciphers = SSL_get_ciphers(s);
1878 ssl_set_client_disabled(s);
1879 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1880 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1881 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1883 sk = sk_SSL_CIPHER_new_null();
1886 if (!sk_SSL_CIPHER_push(sk, c)) {
1887 sk_SSL_CIPHER_free(sk);
1895 /** return a STACK of the ciphers available for the SSL and in order of
1897 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1900 if (s->cipher_list_by_id != NULL) {
1901 return (s->cipher_list_by_id);
1902 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1903 return (s->ctx->cipher_list_by_id);
1909 /** The old interface to get the same thing as SSL_get_ciphers() */
1910 const char *SSL_get_cipher_list(const SSL *s, int n)
1912 const SSL_CIPHER *c;
1913 STACK_OF(SSL_CIPHER) *sk;
1917 sk = SSL_get_ciphers(s);
1918 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1920 c = sk_SSL_CIPHER_value(sk, n);
1926 /** return a STACK of the ciphers available for the SSL_CTX and in order of
1928 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
1931 return ctx->cipher_list;
1935 /** specify the ciphers to be used by default by the SSL_CTX */
1936 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1938 STACK_OF(SSL_CIPHER) *sk;
1940 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1941 &ctx->cipher_list_by_id, str, ctx->cert);
1943 * ssl_create_cipher_list may return an empty stack if it was unable to
1944 * find a cipher matching the given rule string (for example if the rule
1945 * string specifies a cipher which has been disabled). This is not an
1946 * error as far as ssl_create_cipher_list is concerned, and hence
1947 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1951 else if (sk_SSL_CIPHER_num(sk) == 0) {
1952 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1958 /** specify the ciphers to be used by the SSL */
1959 int SSL_set_cipher_list(SSL *s, const char *str)
1961 STACK_OF(SSL_CIPHER) *sk;
1963 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1964 &s->cipher_list_by_id, str, s->cert);
1965 /* see comment in SSL_CTX_set_cipher_list */
1968 else if (sk_SSL_CIPHER_num(sk) == 0) {
1969 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1975 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1978 STACK_OF(SSL_CIPHER) *sk;
1979 const SSL_CIPHER *c;
1982 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1986 sk = s->session->ciphers;
1988 if (sk_SSL_CIPHER_num(sk) == 0)
1991 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1994 c = sk_SSL_CIPHER_value(sk, i);
1995 n = strlen(c->name);
2002 memcpy(p, c->name, n + 1);
2011 /** return a servername extension value if provided in Client Hello, or NULL.
2012 * So far, only host_name types are defined (RFC 3546).
2015 const char *SSL_get_servername(const SSL *s, const int type)
2017 if (type != TLSEXT_NAMETYPE_host_name)
2020 return s->session && !s->tlsext_hostname ?
2021 s->session->tlsext_hostname : s->tlsext_hostname;
2024 int SSL_get_servername_type(const SSL *s)
2027 && (!s->tlsext_hostname ? s->session->
2028 tlsext_hostname : s->tlsext_hostname))
2029 return TLSEXT_NAMETYPE_host_name;
2034 * SSL_select_next_proto implements the standard protocol selection. It is
2035 * expected that this function is called from the callback set by
2036 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2037 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2038 * not included in the length. A byte string of length 0 is invalid. No byte
2039 * string may be truncated. The current, but experimental algorithm for
2040 * selecting the protocol is: 1) If the server doesn't support NPN then this
2041 * is indicated to the callback. In this case, the client application has to
2042 * abort the connection or have a default application level protocol. 2) If
2043 * the server supports NPN, but advertises an empty list then the client
2044 * selects the first protocol in its list, but indicates via the API that this
2045 * fallback case was enacted. 3) Otherwise, the client finds the first
2046 * protocol in the server's list that it supports and selects this protocol.
2047 * This is because it's assumed that the server has better information about
2048 * which protocol a client should use. 4) If the client doesn't support any
2049 * of the server's advertised protocols, then this is treated the same as
2050 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2051 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2053 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2054 const unsigned char *server,
2055 unsigned int server_len,
2056 const unsigned char *client,
2057 unsigned int client_len)
2060 const unsigned char *result;
2061 int status = OPENSSL_NPN_UNSUPPORTED;
2064 * For each protocol in server preference order, see if we support it.
2066 for (i = 0; i < server_len;) {
2067 for (j = 0; j < client_len;) {
2068 if (server[i] == client[j] &&
2069 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2070 /* We found a match */
2071 result = &server[i];
2072 status = OPENSSL_NPN_NEGOTIATED;
2082 /* There's no overlap between our protocols and the server's list. */
2084 status = OPENSSL_NPN_NO_OVERLAP;
2087 *out = (unsigned char *)result + 1;
2088 *outlen = result[0];
2092 #ifndef OPENSSL_NO_NEXTPROTONEG
2094 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2095 * client's requested protocol for this connection and returns 0. If the
2096 * client didn't request any protocol, then *data is set to NULL. Note that
2097 * the client can request any protocol it chooses. The value returned from
2098 * this function need not be a member of the list of supported protocols
2099 * provided by the callback.
2101 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2104 *data = s->next_proto_negotiated;
2108 *len = s->next_proto_negotiated_len;
2113 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
2114 * a TLS server needs a list of supported protocols for Next Protocol
2115 * Negotiation. The returned list must be in wire format. The list is
2116 * returned by setting |out| to point to it and |outlen| to its length. This
2117 * memory will not be modified, but one should assume that the SSL* keeps a
2118 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2119 * wishes to advertise. Otherwise, no such extension will be included in the
2122 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
2123 int (*cb) (SSL *ssl,
2126 unsigned int *outlen,
2127 void *arg), void *arg)
2129 ctx->next_protos_advertised_cb = cb;
2130 ctx->next_protos_advertised_cb_arg = arg;
2134 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2135 * client needs to select a protocol from the server's provided list. |out|
2136 * must be set to point to the selected protocol (which may be within |in|).
2137 * The length of the protocol name must be written into |outlen|. The
2138 * server's advertised protocols are provided in |in| and |inlen|. The
2139 * callback can assume that |in| is syntactically valid. The client must
2140 * select a protocol. It is fatal to the connection if this callback returns
2141 * a value other than SSL_TLSEXT_ERR_OK.
2143 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
2144 int (*cb) (SSL *s, unsigned char **out,
2145 unsigned char *outlen,
2146 const unsigned char *in,
2148 void *arg), void *arg)
2150 ctx->next_proto_select_cb = cb;
2151 ctx->next_proto_select_cb_arg = arg;
2156 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2157 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2158 * length-prefixed strings). Returns 0 on success.
2160 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2161 unsigned int protos_len)
2163 OPENSSL_free(ctx->alpn_client_proto_list);
2164 ctx->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2165 if (ctx->alpn_client_proto_list == NULL) {
2166 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2169 ctx->alpn_client_proto_list_len = protos_len;
2175 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2176 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2177 * length-prefixed strings). Returns 0 on success.
2179 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2180 unsigned int protos_len)
2182 OPENSSL_free(ssl->alpn_client_proto_list);
2183 ssl->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2184 if (ssl->alpn_client_proto_list == NULL) {
2185 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2188 ssl->alpn_client_proto_list_len = protos_len;
2194 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2195 * called during ClientHello processing in order to select an ALPN protocol
2196 * from the client's list of offered protocols.
2198 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2199 int (*cb) (SSL *ssl,
2200 const unsigned char **out,
2201 unsigned char *outlen,
2202 const unsigned char *in,
2204 void *arg), void *arg)
2206 ctx->alpn_select_cb = cb;
2207 ctx->alpn_select_cb_arg = arg;
2211 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2212 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2213 * (not including the leading length-prefix byte). If the server didn't
2214 * respond with a negotiated protocol then |*len| will be zero.
2216 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2221 *data = ssl->s3->alpn_selected;
2225 *len = ssl->s3->alpn_selected_len;
2229 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2230 const char *label, size_t llen,
2231 const unsigned char *p, size_t plen,
2234 if (s->version < TLS1_VERSION)
2237 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2242 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2247 ((unsigned int)a->session_id[0]) |
2248 ((unsigned int)a->session_id[1] << 8L) |
2249 ((unsigned long)a->session_id[2] << 16L) |
2250 ((unsigned long)a->session_id[3] << 24L);
2255 * NB: If this function (or indeed the hash function which uses a sort of
2256 * coarser function than this one) is changed, ensure
2257 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2258 * being able to construct an SSL_SESSION that will collide with any existing
2259 * session with a matching session ID.
2261 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2263 if (a->ssl_version != b->ssl_version)
2265 if (a->session_id_length != b->session_id_length)
2267 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2271 * These wrapper functions should remain rather than redeclaring
2272 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2273 * variable. The reason is that the functions aren't static, they're exposed
2277 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2279 SSL_CTX *ret = NULL;
2282 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2286 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2289 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
2290 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE);
2294 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2295 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2298 ret = OPENSSL_zalloc(sizeof(*ret));
2303 ret->min_proto_version = 0;
2304 ret->max_proto_version = 0;
2305 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2306 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2307 /* We take the system default. */
2308 ret->session_timeout = meth->get_timeout();
2309 ret->references = 1;
2310 ret->lock = CRYPTO_THREAD_lock_new();
2311 if (ret->lock == NULL) {
2312 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2316 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2317 ret->verify_mode = SSL_VERIFY_NONE;
2318 if ((ret->cert = ssl_cert_new()) == NULL)
2321 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2322 if (ret->sessions == NULL)
2324 ret->cert_store = X509_STORE_new();
2325 if (ret->cert_store == NULL)
2327 #ifndef OPENSSL_NO_CT
2328 ret->ctlog_store = CTLOG_STORE_new();
2329 if (ret->ctlog_store == NULL)
2332 if (!ssl_create_cipher_list(ret->method,
2333 &ret->cipher_list, &ret->cipher_list_by_id,
2334 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2335 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2336 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2340 ret->param = X509_VERIFY_PARAM_new();
2341 if (ret->param == NULL)
2344 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2345 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2348 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2349 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2353 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
2356 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2359 /* No compression for DTLS */
2360 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2361 ret->comp_methods = SSL_COMP_get_compression_methods();
2363 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2364 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2366 /* Setup RFC5077 ticket keys */
2367 if ((RAND_bytes(ret->tlsext_tick_key_name, sizeof(ret->tlsext_tick_key_name)) <= 0)
2368 || (RAND_bytes(ret->tlsext_tick_hmac_key, sizeof(ret->tlsext_tick_hmac_key)) <= 0)
2369 || (RAND_bytes(ret->tlsext_tick_aes_key, sizeof(ret->tlsext_tick_aes_key)) <= 0))
2370 ret->options |= SSL_OP_NO_TICKET;
2372 #ifndef OPENSSL_NO_SRP
2373 if (!SSL_CTX_SRP_CTX_init(ret))
2376 #ifndef OPENSSL_NO_ENGINE
2377 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2378 # define eng_strx(x) #x
2379 # define eng_str(x) eng_strx(x)
2380 /* Use specific client engine automatically... ignore errors */
2383 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2386 ENGINE_load_builtin_engines();
2387 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2389 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2395 * Default is to connect to non-RI servers. When RI is more widely
2396 * deployed might change this.
2398 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2400 * Disable compression by default to prevent CRIME. Applications can
2401 * re-enable compression by configuring
2402 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2403 * or by using the SSL_CONF library.
2405 ret->options |= SSL_OP_NO_COMPRESSION;
2407 ret->tlsext_status_type = -1;
2411 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2417 int SSL_CTX_up_ref(SSL_CTX *ctx)
2421 if (CRYPTO_atomic_add(&ctx->references, 1, &i, ctx->lock) <= 0)
2424 REF_PRINT_COUNT("SSL_CTX", ctx);
2425 REF_ASSERT_ISNT(i < 2);
2426 return ((i > 1) ? 1 : 0);
2429 void SSL_CTX_free(SSL_CTX *a)
2436 CRYPTO_atomic_add(&a->references, -1, &i, a->lock);
2437 REF_PRINT_COUNT("SSL_CTX", a);
2440 REF_ASSERT_ISNT(i < 0);
2442 X509_VERIFY_PARAM_free(a->param);
2443 dane_ctx_final(&a->dane);
2446 * Free internal session cache. However: the remove_cb() may reference
2447 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2448 * after the sessions were flushed.
2449 * As the ex_data handling routines might also touch the session cache,
2450 * the most secure solution seems to be: empty (flush) the cache, then
2451 * free ex_data, then finally free the cache.
2452 * (See ticket [openssl.org #212].)
2454 if (a->sessions != NULL)
2455 SSL_CTX_flush_sessions(a, 0);
2457 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2458 lh_SSL_SESSION_free(a->sessions);
2459 X509_STORE_free(a->cert_store);
2460 #ifndef OPENSSL_NO_CT
2461 CTLOG_STORE_free(a->ctlog_store);
2463 sk_SSL_CIPHER_free(a->cipher_list);
2464 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2465 ssl_cert_free(a->cert);
2466 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2467 sk_X509_pop_free(a->extra_certs, X509_free);
2468 a->comp_methods = NULL;
2469 #ifndef OPENSSL_NO_SRTP
2470 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2472 #ifndef OPENSSL_NO_SRP
2473 SSL_CTX_SRP_CTX_free(a);
2475 #ifndef OPENSSL_NO_ENGINE
2476 ENGINE_finish(a->client_cert_engine);
2479 #ifndef OPENSSL_NO_EC
2480 OPENSSL_free(a->tlsext_ecpointformatlist);
2481 OPENSSL_free(a->tlsext_ellipticcurvelist);
2483 OPENSSL_free(a->alpn_client_proto_list);
2485 CRYPTO_THREAD_lock_free(a->lock);
2490 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2492 ctx->default_passwd_callback = cb;
2495 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2497 ctx->default_passwd_callback_userdata = u;
2500 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2502 return ctx->default_passwd_callback;
2505 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2507 return ctx->default_passwd_callback_userdata;
2510 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2512 s->default_passwd_callback = cb;
2515 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2517 s->default_passwd_callback_userdata = u;
2520 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2522 return s->default_passwd_callback;
2525 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2527 return s->default_passwd_callback_userdata;
2530 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2531 int (*cb) (X509_STORE_CTX *, void *),
2534 ctx->app_verify_callback = cb;
2535 ctx->app_verify_arg = arg;
2538 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2539 int (*cb) (int, X509_STORE_CTX *))
2541 ctx->verify_mode = mode;
2542 ctx->default_verify_callback = cb;
2545 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2547 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2550 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2553 ssl_cert_set_cert_cb(c->cert, cb, arg);
2556 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2558 ssl_cert_set_cert_cb(s->cert, cb, arg);
2561 void ssl_set_masks(SSL *s)
2563 #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST)
2567 uint32_t *pvalid = s->s3->tmp.valid_flags;
2568 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
2569 unsigned long mask_k, mask_a;
2570 #ifndef OPENSSL_NO_EC
2571 int have_ecc_cert, ecdsa_ok;
2577 #ifndef OPENSSL_NO_DH
2578 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2583 rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
2584 rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
2585 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
2586 #ifndef OPENSSL_NO_EC
2587 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2593 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
2594 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
2597 #ifndef OPENSSL_NO_GOST
2598 cpk = &(c->pkeys[SSL_PKEY_GOST12_512]);
2599 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2600 mask_k |= SSL_kGOST;
2601 mask_a |= SSL_aGOST12;
2603 cpk = &(c->pkeys[SSL_PKEY_GOST12_256]);
2604 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2605 mask_k |= SSL_kGOST;
2606 mask_a |= SSL_aGOST12;
2608 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2609 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2610 mask_k |= SSL_kGOST;
2611 mask_a |= SSL_aGOST01;
2621 if (rsa_enc || rsa_sign) {
2629 mask_a |= SSL_aNULL;
2632 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2633 * depending on the key usage extension.
2635 #ifndef OPENSSL_NO_EC
2636 if (have_ecc_cert) {
2638 cpk = &c->pkeys[SSL_PKEY_ECC];
2640 ex_kusage = X509_get_key_usage(x);
2641 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2642 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2645 mask_a |= SSL_aECDSA;
2649 #ifndef OPENSSL_NO_EC
2650 mask_k |= SSL_kECDHE;
2653 #ifndef OPENSSL_NO_PSK
2656 if (mask_k & SSL_kRSA)
2657 mask_k |= SSL_kRSAPSK;
2658 if (mask_k & SSL_kDHE)
2659 mask_k |= SSL_kDHEPSK;
2660 if (mask_k & SSL_kECDHE)
2661 mask_k |= SSL_kECDHEPSK;
2664 s->s3->tmp.mask_k = mask_k;
2665 s->s3->tmp.mask_a = mask_a;
2668 #ifndef OPENSSL_NO_EC
2670 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2672 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
2673 /* key usage, if present, must allow signing */
2674 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
2675 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2676 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2680 return 1; /* all checks are ok */
2685 static int ssl_get_server_cert_index(const SSL *s)
2688 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2689 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2690 idx = SSL_PKEY_RSA_SIGN;
2691 if (idx == SSL_PKEY_GOST_EC) {
2692 if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)
2693 idx = SSL_PKEY_GOST12_512;
2694 else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509)
2695 idx = SSL_PKEY_GOST12_256;
2696 else if (s->cert->pkeys[SSL_PKEY_GOST01].x509)
2697 idx = SSL_PKEY_GOST01;
2702 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2706 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2712 if (!s->s3 || !s->s3->tmp.new_cipher)
2716 i = ssl_get_server_cert_index(s);
2718 /* This may or may not be an error. */
2723 return &c->pkeys[i];
2726 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2729 unsigned long alg_a;
2733 alg_a = cipher->algorithm_auth;
2736 if ((alg_a & SSL_aDSS) &&
2737 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2738 idx = SSL_PKEY_DSA_SIGN;
2739 else if (alg_a & SSL_aRSA) {
2740 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2741 idx = SSL_PKEY_RSA_SIGN;
2742 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2743 idx = SSL_PKEY_RSA_ENC;
2744 } else if ((alg_a & SSL_aECDSA) &&
2745 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2748 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2752 *pmd = s->s3->tmp.md[idx];
2753 return c->pkeys[idx].privatekey;
2756 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2757 size_t *serverinfo_length)
2761 *serverinfo_length = 0;
2764 i = ssl_get_server_cert_index(s);
2768 if (c->pkeys[i].serverinfo == NULL)
2771 *serverinfo = c->pkeys[i].serverinfo;
2772 *serverinfo_length = c->pkeys[i].serverinfo_length;
2776 void ssl_update_cache(SSL *s, int mode)
2781 * If the session_id_length is 0, we are not supposed to cache it, and it
2782 * would be rather hard to do anyway :-)
2784 if (s->session->session_id_length == 0)
2787 i = s->session_ctx->session_cache_mode;
2788 if ((i & mode) && (!s->hit)
2789 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2790 || SSL_CTX_add_session(s->session_ctx, s->session))
2791 && (s->session_ctx->new_session_cb != NULL)) {
2792 SSL_SESSION_up_ref(s->session);
2793 if (!s->session_ctx->new_session_cb(s, s->session))
2794 SSL_SESSION_free(s->session);
2797 /* auto flush every 255 connections */
2798 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2799 if ((((mode & SSL_SESS_CACHE_CLIENT)
2800 ? s->session_ctx->stats.sess_connect_good
2801 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2802 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2807 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2812 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2817 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2821 if (s->method != meth) {
2822 const SSL_METHOD *sm = s->method;
2823 int (*hf)(SSL *) = s->handshake_func;
2825 if (sm->version == meth->version)
2830 ret = s->method->ssl_new(s);
2833 if (hf == sm->ssl_connect)
2834 s->handshake_func = meth->ssl_connect;
2835 else if (hf == sm->ssl_accept)
2836 s->handshake_func = meth->ssl_accept;
2841 int SSL_get_error(const SSL *s, int i)
2848 return (SSL_ERROR_NONE);
2851 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2852 * where we do encode the error
2854 if ((l = ERR_peek_error()) != 0) {
2855 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2856 return (SSL_ERROR_SYSCALL);
2858 return (SSL_ERROR_SSL);
2862 if (SSL_want_read(s)) {
2863 bio = SSL_get_rbio(s);
2864 if (BIO_should_read(bio))
2865 return (SSL_ERROR_WANT_READ);
2866 else if (BIO_should_write(bio))
2868 * This one doesn't make too much sense ... We never try to write
2869 * to the rbio, and an application program where rbio and wbio
2870 * are separate couldn't even know what it should wait for.
2871 * However if we ever set s->rwstate incorrectly (so that we have
2872 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2873 * wbio *are* the same, this test works around that bug; so it
2874 * might be safer to keep it.
2876 return (SSL_ERROR_WANT_WRITE);
2877 else if (BIO_should_io_special(bio)) {
2878 reason = BIO_get_retry_reason(bio);
2879 if (reason == BIO_RR_CONNECT)
2880 return (SSL_ERROR_WANT_CONNECT);
2881 else if (reason == BIO_RR_ACCEPT)
2882 return (SSL_ERROR_WANT_ACCEPT);
2884 return (SSL_ERROR_SYSCALL); /* unknown */
2888 if (SSL_want_write(s)) {
2889 bio = SSL_get_wbio(s);
2890 if (BIO_should_write(bio))
2891 return (SSL_ERROR_WANT_WRITE);
2892 else if (BIO_should_read(bio))
2894 * See above (SSL_want_read(s) with BIO_should_write(bio))
2896 return (SSL_ERROR_WANT_READ);
2897 else if (BIO_should_io_special(bio)) {
2898 reason = BIO_get_retry_reason(bio);
2899 if (reason == BIO_RR_CONNECT)
2900 return (SSL_ERROR_WANT_CONNECT);
2901 else if (reason == BIO_RR_ACCEPT)
2902 return (SSL_ERROR_WANT_ACCEPT);
2904 return (SSL_ERROR_SYSCALL);
2907 if (SSL_want_x509_lookup(s)) {
2908 return (SSL_ERROR_WANT_X509_LOOKUP);
2910 if (SSL_want_async(s)) {
2911 return SSL_ERROR_WANT_ASYNC;
2913 if (SSL_want_async_job(s)) {
2914 return SSL_ERROR_WANT_ASYNC_JOB;
2919 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2920 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2921 return (SSL_ERROR_ZERO_RETURN);
2923 return (SSL_ERROR_SYSCALL);
2926 static int ssl_do_handshake_intern(void *vargs)
2928 struct ssl_async_args *args;
2931 args = (struct ssl_async_args *)vargs;
2934 return s->handshake_func(s);
2937 int SSL_do_handshake(SSL *s)
2941 if (s->handshake_func == NULL) {
2942 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2946 s->method->ssl_renegotiate_check(s);
2948 if (SSL_in_init(s) || SSL_in_before(s)) {
2949 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2950 struct ssl_async_args args;
2954 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
2956 ret = s->handshake_func(s);
2962 void SSL_set_accept_state(SSL *s)
2966 ossl_statem_clear(s);
2967 s->handshake_func = s->method->ssl_accept;
2971 void SSL_set_connect_state(SSL *s)
2975 ossl_statem_clear(s);
2976 s->handshake_func = s->method->ssl_connect;
2980 int ssl_undefined_function(SSL *s)
2982 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2986 int ssl_undefined_void_function(void)
2988 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2989 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2993 int ssl_undefined_const_function(const SSL *s)
2998 const SSL_METHOD *ssl_bad_method(int ver)
3000 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3004 const char *ssl_protocol_to_string(int version)
3006 if (version == TLS1_2_VERSION)
3008 else if (version == TLS1_1_VERSION)
3010 else if (version == TLS1_VERSION)
3012 else if (version == SSL3_VERSION)
3014 else if (version == DTLS1_BAD_VER)
3016 else if (version == DTLS1_VERSION)
3018 else if (version == DTLS1_2_VERSION)
3024 const char *SSL_get_version(const SSL *s)
3026 return ssl_protocol_to_string(s->version);
3029 SSL *SSL_dup(SSL *s)
3031 STACK_OF(X509_NAME) *sk;
3036 /* If we're not quiescent, just up_ref! */
3037 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3038 CRYPTO_atomic_add(&s->references, 1, &i, s->lock);
3043 * Otherwise, copy configuration state, and session if set.
3045 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3048 if (s->session != NULL) {
3050 * Arranges to share the same session via up_ref. This "copies"
3051 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3053 if (!SSL_copy_session_id(ret, s))
3057 * No session has been established yet, so we have to expect that
3058 * s->cert or ret->cert will be changed later -- they should not both
3059 * point to the same object, and thus we can't use
3060 * SSL_copy_session_id.
3062 if (!SSL_set_ssl_method(ret, s->method))
3065 if (s->cert != NULL) {
3066 ssl_cert_free(ret->cert);
3067 ret->cert = ssl_cert_dup(s->cert);
3068 if (ret->cert == NULL)
3072 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
3076 if (!ssl_dane_dup(ret, s))
3078 ret->version = s->version;
3079 ret->options = s->options;
3080 ret->mode = s->mode;
3081 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3082 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3083 ret->msg_callback = s->msg_callback;
3084 ret->msg_callback_arg = s->msg_callback_arg;
3085 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3086 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3087 ret->generate_session_id = s->generate_session_id;
3089 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3091 /* copy app data, a little dangerous perhaps */
3092 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3095 /* setup rbio, and wbio */
3096 if (s->rbio != NULL) {
3097 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3100 if (s->wbio != NULL) {
3101 if (s->wbio != s->rbio) {
3102 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3105 ret->wbio = ret->rbio;
3108 ret->server = s->server;
3109 if (s->handshake_func) {
3111 SSL_set_accept_state(ret);
3113 SSL_set_connect_state(ret);
3115 ret->shutdown = s->shutdown;
3118 ret->default_passwd_callback = s->default_passwd_callback;
3119 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3121 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3123 /* dup the cipher_list and cipher_list_by_id stacks */
3124 if (s->cipher_list != NULL) {
3125 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3128 if (s->cipher_list_by_id != NULL)
3129 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3133 /* Dup the client_CA list */
3134 if (s->client_CA != NULL) {
3135 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
3137 ret->client_CA = sk;
3138 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3139 xn = sk_X509_NAME_value(sk, i);
3140 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3153 void ssl_clear_cipher_ctx(SSL *s)
3155 if (s->enc_read_ctx != NULL) {
3156 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3157 s->enc_read_ctx = NULL;
3159 if (s->enc_write_ctx != NULL) {
3160 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3161 s->enc_write_ctx = NULL;
3163 #ifndef OPENSSL_NO_COMP
3164 COMP_CTX_free(s->expand);
3166 COMP_CTX_free(s->compress);
3171 X509 *SSL_get_certificate(const SSL *s)
3173 if (s->cert != NULL)
3174 return (s->cert->key->x509);
3179 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3181 if (s->cert != NULL)
3182 return (s->cert->key->privatekey);
3187 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3189 if (ctx->cert != NULL)
3190 return ctx->cert->key->x509;
3195 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3197 if (ctx->cert != NULL)
3198 return ctx->cert->key->privatekey;
3203 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3205 if ((s->session != NULL) && (s->session->cipher != NULL))
3206 return (s->session->cipher);
3210 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3212 #ifndef OPENSSL_NO_COMP
3213 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3219 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3221 #ifndef OPENSSL_NO_COMP
3222 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3228 int ssl_init_wbio_buffer(SSL *s)
3232 if (s->bbio == NULL) {
3233 bbio = BIO_new(BIO_f_buffer());
3237 s->wbio = BIO_push(bbio, s->wbio);
3240 (void)BIO_reset(bbio);
3243 if (!BIO_set_read_buffer_size(bbio, 1)) {
3244 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3251 void ssl_free_wbio_buffer(SSL *s)
3253 /* callers ensure s is never null */
3254 if (s->bbio == NULL)
3257 if (s->bbio == s->wbio) {
3258 /* remove buffering */
3259 s->wbio = BIO_pop(s->wbio);
3260 assert(s->wbio != NULL);
3266 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3268 ctx->quiet_shutdown = mode;
3271 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3273 return (ctx->quiet_shutdown);
3276 void SSL_set_quiet_shutdown(SSL *s, int mode)
3278 s->quiet_shutdown = mode;
3281 int SSL_get_quiet_shutdown(const SSL *s)
3283 return (s->quiet_shutdown);
3286 void SSL_set_shutdown(SSL *s, int mode)
3291 int SSL_get_shutdown(const SSL *s)
3296 int SSL_version(const SSL *s)
3301 int SSL_client_version(const SSL *s)
3303 return s->client_version;
3306 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3311 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3314 if (ssl->ctx == ctx)
3317 ctx = ssl->initial_ctx;
3318 new_cert = ssl_cert_dup(ctx->cert);
3319 if (new_cert == NULL) {
3322 ssl_cert_free(ssl->cert);
3323 ssl->cert = new_cert;
3326 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3327 * so setter APIs must prevent invalid lengths from entering the system.
3329 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3332 * If the session ID context matches that of the parent SSL_CTX,
3333 * inherit it from the new SSL_CTX as well. If however the context does
3334 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3335 * leave it unchanged.
3337 if ((ssl->ctx != NULL) &&
3338 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3339 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3340 ssl->sid_ctx_length = ctx->sid_ctx_length;
3341 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3344 SSL_CTX_up_ref(ctx);
3345 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3351 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3353 return (X509_STORE_set_default_paths(ctx->cert_store));
3356 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3358 X509_LOOKUP *lookup;
3360 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3363 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3365 /* Clear any errors if the default directory does not exist */
3371 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3373 X509_LOOKUP *lookup;
3375 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3379 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3381 /* Clear any errors if the default file does not exist */
3387 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3390 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3393 void SSL_set_info_callback(SSL *ssl,
3394 void (*cb) (const SSL *ssl, int type, int val))
3396 ssl->info_callback = cb;
3400 * One compiler (Diab DCC) doesn't like argument names in returned function
3403 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3406 return ssl->info_callback;
3409 void SSL_set_verify_result(SSL *ssl, long arg)
3411 ssl->verify_result = arg;
3414 long SSL_get_verify_result(const SSL *ssl)
3416 return (ssl->verify_result);
3419 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3422 return sizeof(ssl->s3->client_random);
3423 if (outlen > sizeof(ssl->s3->client_random))
3424 outlen = sizeof(ssl->s3->client_random);
3425 memcpy(out, ssl->s3->client_random, outlen);
3429 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3432 return sizeof(ssl->s3->server_random);
3433 if (outlen > sizeof(ssl->s3->server_random))
3434 outlen = sizeof(ssl->s3->server_random);
3435 memcpy(out, ssl->s3->server_random, outlen);
3439 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3440 unsigned char *out, size_t outlen)
3442 if (session->master_key_length < 0) {
3443 /* Should never happen */
3447 return session->master_key_length;
3448 if (outlen > (size_t)session->master_key_length)
3449 outlen = session->master_key_length;
3450 memcpy(out, session->master_key, outlen);
3454 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3456 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3459 void *SSL_get_ex_data(const SSL *s, int idx)
3461 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3464 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3466 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3469 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3471 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3479 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3481 return (ctx->cert_store);
3484 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3486 X509_STORE_free(ctx->cert_store);
3487 ctx->cert_store = store;
3490 int SSL_want(const SSL *s)
3492 return (s->rwstate);
3496 * \brief Set the callback for generating temporary DH keys.
3497 * \param ctx the SSL context.
3498 * \param dh the callback
3501 #ifndef OPENSSL_NO_DH
3502 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3503 DH *(*dh) (SSL *ssl, int is_export,
3506 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3509 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3512 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3516 #ifndef OPENSSL_NO_PSK
3517 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3519 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3520 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3521 SSL_R_DATA_LENGTH_TOO_LONG);
3524 OPENSSL_free(ctx->cert->psk_identity_hint);
3525 if (identity_hint != NULL) {
3526 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3527 if (ctx->cert->psk_identity_hint == NULL)
3530 ctx->cert->psk_identity_hint = NULL;
3534 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3539 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3540 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3543 OPENSSL_free(s->cert->psk_identity_hint);
3544 if (identity_hint != NULL) {
3545 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3546 if (s->cert->psk_identity_hint == NULL)
3549 s->cert->psk_identity_hint = NULL;
3553 const char *SSL_get_psk_identity_hint(const SSL *s)
3555 if (s == NULL || s->session == NULL)
3557 return (s->session->psk_identity_hint);
3560 const char *SSL_get_psk_identity(const SSL *s)
3562 if (s == NULL || s->session == NULL)
3564 return (s->session->psk_identity);
3567 void SSL_set_psk_client_callback(SSL *s,
3568 unsigned int (*cb) (SSL *ssl,
3577 s->psk_client_callback = cb;
3580 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3581 unsigned int (*cb) (SSL *ssl,
3590 ctx->psk_client_callback = cb;
3593 void SSL_set_psk_server_callback(SSL *s,
3594 unsigned int (*cb) (SSL *ssl,
3595 const char *identity,
3600 s->psk_server_callback = cb;
3603 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3604 unsigned int (*cb) (SSL *ssl,
3605 const char *identity,
3610 ctx->psk_server_callback = cb;
3614 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3615 void (*cb) (int write_p, int version,
3616 int content_type, const void *buf,
3617 size_t len, SSL *ssl, void *arg))
3619 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3622 void SSL_set_msg_callback(SSL *ssl,
3623 void (*cb) (int write_p, int version,
3624 int content_type, const void *buf,
3625 size_t len, SSL *ssl, void *arg))
3627 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3630 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3631 int (*cb) (SSL *ssl,
3635 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3636 (void (*)(void))cb);
3639 void SSL_set_not_resumable_session_callback(SSL *ssl,
3640 int (*cb) (SSL *ssl,
3641 int is_forward_secure))
3643 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3644 (void (*)(void))cb);
3648 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3649 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3650 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3654 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3656 ssl_clear_hash_ctx(hash);
3657 *hash = EVP_MD_CTX_new();
3658 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3659 EVP_MD_CTX_free(*hash);
3666 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3670 EVP_MD_CTX_free(*hash);
3674 /* Retrieve handshake hashes */
3675 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3677 EVP_MD_CTX *ctx = NULL;
3678 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
3679 int ret = EVP_MD_CTX_size(hdgst);
3680 if (ret < 0 || ret > outlen) {
3684 ctx = EVP_MD_CTX_new();
3689 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
3690 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
3693 EVP_MD_CTX_free(ctx);
3697 int SSL_session_reused(SSL *s)
3702 int SSL_is_server(SSL *s)
3707 #if OPENSSL_API_COMPAT < 0x10100000L
3708 void SSL_set_debug(SSL *s, int debug)
3710 /* Old function was do-nothing anyway... */
3717 void SSL_set_security_level(SSL *s, int level)
3719 s->cert->sec_level = level;
3722 int SSL_get_security_level(const SSL *s)
3724 return s->cert->sec_level;
3727 void SSL_set_security_callback(SSL *s,
3728 int (*cb) (const SSL *s, const SSL_CTX *ctx, int op,
3729 int bits, int nid, void *other,
3732 s->cert->sec_cb = cb;
3735 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s, const SSL_CTX *ctx, int op,
3737 void *other, void *ex) {
3738 return s->cert->sec_cb;
3741 void SSL_set0_security_ex_data(SSL *s, void *ex)
3743 s->cert->sec_ex = ex;
3746 void *SSL_get0_security_ex_data(const SSL *s)
3748 return s->cert->sec_ex;
3751 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3753 ctx->cert->sec_level = level;
3756 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3758 return ctx->cert->sec_level;
3761 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3762 int (*cb) (const SSL *s, const SSL_CTX *ctx, int op,
3763 int bits, int nid, void *other,
3766 ctx->cert->sec_cb = cb;
3769 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
3775 return ctx->cert->sec_cb;
3778 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3780 ctx->cert->sec_ex = ex;
3783 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3785 return ctx->cert->sec_ex;
3790 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3791 * can return unsigned long, instead of the generic long return value from the
3792 * control interface.
3794 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
3796 return ctx->options;
3798 unsigned long SSL_get_options(const SSL* s)
3802 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
3804 return ctx->options |= op;
3806 unsigned long SSL_set_options(SSL *s, unsigned long op)
3808 return s->options |= op;
3810 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
3812 return ctx->options &= ~op;
3814 unsigned long SSL_clear_options(SSL *s, unsigned long op)
3816 return s->options &= ~op;
3819 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
3821 return s->verified_chain;
3824 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
3826 #ifndef OPENSSL_NO_CT
3829 * Moves SCTs from the |src| stack to the |dst| stack.
3830 * The source of each SCT will be set to |origin|.
3831 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3833 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3835 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src, sct_source_t origin)
3841 *dst = sk_SCT_new_null();
3843 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
3848 while ((sct = sk_SCT_pop(src)) != NULL) {
3849 if (SCT_set_source(sct, origin) != 1)
3852 if (sk_SCT_push(*dst, sct) <= 0)
3860 sk_SCT_push(src, sct); /* Put the SCT back */
3865 * Look for data collected during ServerHello and parse if found.
3866 * Return 1 on success, 0 on failure.
3868 static int ct_extract_tls_extension_scts(SSL *s)
3870 int scts_extracted = 0;
3872 if (s->tlsext_scts != NULL) {
3873 const unsigned char *p = s->tlsext_scts;
3874 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->tlsext_scts_len);
3876 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
3878 SCT_LIST_free(scts);
3881 return scts_extracted;
3885 * Checks for an OCSP response and then attempts to extract any SCTs found if it
3886 * contains an SCT X509 extension. They will be stored in |s->scts|.
3888 * - The number of SCTs extracted, assuming an OCSP response exists.
3889 * - 0 if no OCSP response exists or it contains no SCTs.
3890 * - A negative integer if an error occurs.
3892 static int ct_extract_ocsp_response_scts(SSL *s)
3894 #ifndef OPENSSL_NO_OCSP
3895 int scts_extracted = 0;
3896 const unsigned char *p;
3897 OCSP_BASICRESP *br = NULL;
3898 OCSP_RESPONSE *rsp = NULL;
3899 STACK_OF(SCT) *scts = NULL;
3902 if (s->tlsext_ocsp_resp == NULL || s->tlsext_ocsp_resplen == 0)
3905 p = s->tlsext_ocsp_resp;
3906 rsp = d2i_OCSP_RESPONSE(NULL, &p, s->tlsext_ocsp_resplen);
3910 br = OCSP_response_get1_basic(rsp);
3914 for (i = 0; i < OCSP_resp_count(br); ++i) {
3915 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
3920 scts = OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
3921 scts_extracted = ct_move_scts(&s->scts, scts,
3922 SCT_SOURCE_OCSP_STAPLED_RESPONSE);
3923 if (scts_extracted < 0)
3927 SCT_LIST_free(scts);
3928 OCSP_BASICRESP_free(br);
3929 OCSP_RESPONSE_free(rsp);
3930 return scts_extracted;
3932 /* Behave as if no OCSP response exists */
3938 * Attempts to extract SCTs from the peer certificate.
3939 * Return the number of SCTs extracted, or a negative integer if an error
3942 static int ct_extract_x509v3_extension_scts(SSL *s)
3944 int scts_extracted = 0;
3945 X509 *cert = s->session != NULL ? s->session->peer : NULL;
3948 STACK_OF(SCT) *scts =
3949 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
3952 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
3954 SCT_LIST_free(scts);
3957 return scts_extracted;
3961 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
3962 * response (if it exists) and X509v3 extensions in the certificate.
3963 * Returns NULL if an error occurs.
3965 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
3967 if (!s->scts_parsed) {
3968 if (ct_extract_tls_extension_scts(s) < 0 ||
3969 ct_extract_ocsp_response_scts(s) < 0 ||
3970 ct_extract_x509v3_extension_scts(s) < 0)
3980 static int ct_permissive(const CT_POLICY_EVAL_CTX *ctx,
3981 const STACK_OF(SCT) *scts, void *unused_arg)
3986 static int ct_strict(const CT_POLICY_EVAL_CTX *ctx,
3987 const STACK_OF(SCT) *scts, void *unused_arg)
3989 int count = scts != NULL ? sk_SCT_num(scts) : 0;
3992 for (i = 0; i < count; ++i) {
3993 SCT *sct = sk_SCT_value(scts, i);
3994 int status = SCT_get_validation_status(sct);
3996 if (status == SCT_VALIDATION_STATUS_VALID)
3999 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4003 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4007 * Since code exists that uses the custom extension handler for CT, look
4008 * for this and throw an error if they have already registered to use CT.
4010 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4011 TLSEXT_TYPE_signed_certificate_timestamp)) {
4012 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4013 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4017 if (callback != NULL) {
4018 /* If we are validating CT, then we MUST accept SCTs served via OCSP */
4019 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4023 s->ct_validation_callback = callback;
4024 s->ct_validation_callback_arg = arg;
4029 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4030 ssl_ct_validation_cb callback,
4034 * Since code exists that uses the custom extension handler for CT, look for
4035 * this and throw an error if they have already registered to use CT.
4037 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4038 TLSEXT_TYPE_signed_certificate_timestamp)) {
4039 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4040 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4044 ctx->ct_validation_callback = callback;
4045 ctx->ct_validation_callback_arg = arg;
4049 int SSL_ct_is_enabled(const SSL *s)
4051 return s->ct_validation_callback != NULL;
4054 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4056 return ctx->ct_validation_callback != NULL;
4059 int ssl_validate_ct(SSL *s)
4062 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4064 SSL_DANE *dane = &s->dane;
4065 CT_POLICY_EVAL_CTX *ctx = NULL;
4066 const STACK_OF(SCT) *scts;
4069 * If no callback is set, the peer is anonymous, or its chain is invalid,
4070 * skip SCT validation - just return success. Applications that continue
4071 * handshakes without certificates, with unverified chains, or pinned leaf
4072 * certificates are outside the scope of the WebPKI and CT.
4074 * The above exclusions notwithstanding the vast majority of peers will
4075 * have rather ordinary certificate chains validated by typical
4076 * applications that perform certificate verification and therefore will
4077 * process SCTs when enabled.
4079 if (s->ct_validation_callback == NULL || cert == NULL ||
4080 s->verify_result != X509_V_OK ||
4081 s->verified_chain == NULL ||
4082 sk_X509_num(s->verified_chain) <= 1)
4086 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4087 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4089 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4090 switch (dane->mtlsa->usage) {
4091 case DANETLS_USAGE_DANE_TA:
4092 case DANETLS_USAGE_DANE_EE:
4097 ctx = CT_POLICY_EVAL_CTX_new();
4099 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4103 issuer = sk_X509_value(s->verified_chain, 1);
4104 CT_POLICY_EVAL_CTX_set0_cert(ctx, cert);
4105 CT_POLICY_EVAL_CTX_set0_issuer(ctx, issuer);
4106 CT_POLICY_EVAL_CTX_set0_log_store(ctx, s->ctx->ctlog_store);
4108 scts = SSL_get0_peer_scts(s);
4111 * This function returns success (> 0) only when all the SCTs are valid, 0
4112 * when some are invalid, and < 0 on various internal errors (out of
4113 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4114 * reason to abort the handshake, that decision is up to the callback.
4115 * Therefore, we error out only in the unexpected case that the return
4116 * value is negative.
4118 * XXX: One might well argue that the return value of this function is an
4119 * unfortunate design choice. Its job is only to determine the validation
4120 * status of each of the provided SCTs. So long as it correctly separates
4121 * the wheat from the chaff it should return success. Failure in this case
4122 * ought to correspond to an inability to carry out its duties.
4124 if (SCT_LIST_validate(scts, ctx) < 0) {
4125 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4129 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4131 ret = 0; /* This function returns 0 on failure */
4134 CT_POLICY_EVAL_CTX_free(ctx);
4136 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4137 * failure return code here. Also the application may wish the complete
4138 * the handshake, and then disconnect cleanly at a higher layer, after
4139 * checking the verification status of the completed connection.
4141 * We therefore force a certificate verification failure which will be
4142 * visible via SSL_get_verify_result() and cached as part of any resumed
4145 * Note: the permissive callback is for information gathering only, always
4146 * returns success, and does not affect verification status. Only the
4147 * strict callback or a custom application-specified callback can trigger
4148 * connection failure or record a verification error.
4151 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4155 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4157 switch (validation_mode) {
4159 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4161 case SSL_CT_VALIDATION_PERMISSIVE:
4162 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4163 case SSL_CT_VALIDATION_STRICT:
4164 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4168 int SSL_enable_ct(SSL *s, int validation_mode)
4170 switch (validation_mode) {
4172 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4174 case SSL_CT_VALIDATION_PERMISSIVE:
4175 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4176 case SSL_CT_VALIDATION_STRICT:
4177 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4181 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4183 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4186 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4188 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4191 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE *logs)
4193 CTLOG_STORE_free(ctx->ctlog_store);
4194 ctx->ctlog_store = logs;
4197 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4199 return ctx->ctlog_store;