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_up_ref(SSL *s)
678 if (CRYPTO_atomic_add(&s->references, 1, &i, s->lock) <= 0)
681 REF_PRINT_COUNT("SSL", s);
682 REF_ASSERT_ISNT(i < 2);
683 return ((i > 1) ? 1 : 0);
686 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
687 unsigned int sid_ctx_len)
689 if (sid_ctx_len > sizeof ctx->sid_ctx) {
690 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
691 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
694 ctx->sid_ctx_length = sid_ctx_len;
695 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
700 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
701 unsigned int sid_ctx_len)
703 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
704 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
705 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
708 ssl->sid_ctx_length = sid_ctx_len;
709 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
714 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
716 CRYPTO_THREAD_write_lock(ctx->lock);
717 ctx->generate_session_id = cb;
718 CRYPTO_THREAD_unlock(ctx->lock);
722 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
724 CRYPTO_THREAD_write_lock(ssl->lock);
725 ssl->generate_session_id = cb;
726 CRYPTO_THREAD_unlock(ssl->lock);
730 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
734 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
735 * we can "construct" a session to give us the desired check - ie. to
736 * find if there's a session in the hash table that would conflict with
737 * any new session built out of this id/id_len and the ssl_version in use
742 if (id_len > sizeof r.session_id)
745 r.ssl_version = ssl->version;
746 r.session_id_length = id_len;
747 memcpy(r.session_id, id, id_len);
749 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
750 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
751 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
755 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
757 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
760 int SSL_set_purpose(SSL *s, int purpose)
762 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
765 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
767 return X509_VERIFY_PARAM_set_trust(s->param, trust);
770 int SSL_set_trust(SSL *s, int trust)
772 return X509_VERIFY_PARAM_set_trust(s->param, trust);
775 int SSL_set1_host(SSL *s, const char *hostname)
777 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
780 int SSL_add1_host(SSL *s, const char *hostname)
782 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
785 void SSL_set_hostflags(SSL *s, unsigned int flags)
787 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
790 const char *SSL_get0_peername(SSL *s)
792 return X509_VERIFY_PARAM_get0_peername(s->param);
795 int SSL_CTX_dane_enable(SSL_CTX *ctx)
797 return dane_ctx_enable(&ctx->dane);
800 int SSL_dane_enable(SSL *s, const char *basedomain)
802 SSL_DANE *dane = &s->dane;
804 if (s->ctx->dane.mdmax == 0) {
805 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
808 if (dane->trecs != NULL) {
809 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
814 * Default SNI name. This rejects empty names, while set1_host below
815 * accepts them and disables host name checks. To avoid side-effects with
816 * invalid input, set the SNI name first.
818 if (s->tlsext_hostname == NULL) {
819 if (!SSL_set_tlsext_host_name(s, basedomain)) {
820 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
825 /* Primary RFC6125 reference identifier */
826 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
827 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
833 dane->dctx = &s->ctx->dane;
834 dane->trecs = sk_danetls_record_new_null();
836 if (dane->trecs == NULL) {
837 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
843 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
845 SSL_DANE *dane = &s->dane;
847 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
851 *mcert = dane->mcert;
853 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
858 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
859 uint8_t *mtype, unsigned const char **data, size_t *dlen)
861 SSL_DANE *dane = &s->dane;
863 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
867 *usage = dane->mtlsa->usage;
869 *selector = dane->mtlsa->selector;
871 *mtype = dane->mtlsa->mtype;
873 *data = dane->mtlsa->data;
875 *dlen = dane->mtlsa->dlen;
880 SSL_DANE *SSL_get0_dane(SSL *s)
885 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
886 uint8_t mtype, unsigned char *data, size_t dlen)
888 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
891 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype, uint8_t ord)
893 return dane_mtype_set(&ctx->dane, md, mtype, ord);
896 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
898 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
901 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
903 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
906 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
911 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
916 void SSL_certs_clear(SSL *s)
918 ssl_cert_clear_certs(s->cert);
921 void SSL_free(SSL *s)
928 CRYPTO_atomic_add(&s->references, -1, &i, s->lock);
929 REF_PRINT_COUNT("SSL", s);
932 REF_ASSERT_ISNT(i < 0);
934 X509_VERIFY_PARAM_free(s->param);
935 dane_final(&s->dane);
936 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
938 if (s->bbio != NULL) {
939 /* If the buffering BIO is in place, pop it off */
940 if (s->bbio == s->wbio) {
941 s->wbio = BIO_pop(s->wbio);
946 BIO_free_all(s->rbio);
947 if (s->wbio != s->rbio)
948 BIO_free_all(s->wbio);
950 BUF_MEM_free(s->init_buf);
952 /* add extra stuff */
953 sk_SSL_CIPHER_free(s->cipher_list);
954 sk_SSL_CIPHER_free(s->cipher_list_by_id);
956 /* Make the next call work :-) */
957 if (s->session != NULL) {
958 ssl_clear_bad_session(s);
959 SSL_SESSION_free(s->session);
964 ssl_cert_free(s->cert);
965 /* Free up if allocated */
967 OPENSSL_free(s->tlsext_hostname);
968 SSL_CTX_free(s->initial_ctx);
969 #ifndef OPENSSL_NO_EC
970 OPENSSL_free(s->tlsext_ecpointformatlist);
971 OPENSSL_free(s->tlsext_ellipticcurvelist);
972 #endif /* OPENSSL_NO_EC */
973 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
974 #ifndef OPENSSL_NO_OCSP
975 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
977 #ifndef OPENSSL_NO_CT
978 SCT_LIST_free(s->scts);
979 OPENSSL_free(s->tlsext_scts);
981 OPENSSL_free(s->tlsext_ocsp_resp);
982 OPENSSL_free(s->alpn_client_proto_list);
984 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
986 sk_X509_pop_free(s->verified_chain, X509_free);
988 if (s->method != NULL)
989 s->method->ssl_free(s);
991 RECORD_LAYER_release(&s->rlayer);
993 SSL_CTX_free(s->ctx);
995 ASYNC_WAIT_CTX_free(s->waitctx);
997 #if !defined(OPENSSL_NO_NEXTPROTONEG)
998 OPENSSL_free(s->next_proto_negotiated);
1001 #ifndef OPENSSL_NO_SRTP
1002 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1005 CRYPTO_THREAD_lock_free(s->lock);
1010 void SSL_set_rbio(SSL *s, BIO *rbio)
1012 if (s->rbio != rbio)
1013 BIO_free_all(s->rbio);
1017 void SSL_set_wbio(SSL *s, BIO *wbio)
1020 * If the output buffering BIO is still in place, remove it
1022 if (s->bbio != NULL) {
1023 if (s->wbio == s->bbio) {
1024 s->wbio = BIO_next(s->wbio);
1025 BIO_set_next(s->bbio, NULL);
1028 if (s->wbio != wbio && s->rbio != s->wbio)
1029 BIO_free_all(s->wbio);
1033 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1035 SSL_set_wbio(s, wbio);
1036 SSL_set_rbio(s, rbio);
1039 BIO *SSL_get_rbio(const SSL *s)
1044 BIO *SSL_get_wbio(const SSL *s)
1049 int SSL_get_fd(const SSL *s)
1051 return (SSL_get_rfd(s));
1054 int SSL_get_rfd(const SSL *s)
1059 b = SSL_get_rbio(s);
1060 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1062 BIO_get_fd(r, &ret);
1066 int SSL_get_wfd(const SSL *s)
1071 b = SSL_get_wbio(s);
1072 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1074 BIO_get_fd(r, &ret);
1078 #ifndef OPENSSL_NO_SOCK
1079 int SSL_set_fd(SSL *s, int fd)
1084 bio = BIO_new(BIO_s_socket());
1087 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1090 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1091 SSL_set_bio(s, bio, bio);
1097 int SSL_set_wfd(SSL *s, int fd)
1102 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
1103 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
1104 bio = BIO_new(BIO_s_socket());
1107 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1110 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1111 SSL_set_bio(s, SSL_get_rbio(s), bio);
1113 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
1119 int SSL_set_rfd(SSL *s, int fd)
1124 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
1125 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
1126 bio = BIO_new(BIO_s_socket());
1129 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1132 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1133 SSL_set_bio(s, bio, SSL_get_wbio(s));
1135 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
1142 /* return length of latest Finished message we sent, copy to 'buf' */
1143 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1147 if (s->s3 != NULL) {
1148 ret = s->s3->tmp.finish_md_len;
1151 memcpy(buf, s->s3->tmp.finish_md, count);
1156 /* return length of latest Finished message we expected, copy to 'buf' */
1157 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1161 if (s->s3 != NULL) {
1162 ret = s->s3->tmp.peer_finish_md_len;
1165 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1170 int SSL_get_verify_mode(const SSL *s)
1172 return (s->verify_mode);
1175 int SSL_get_verify_depth(const SSL *s)
1177 return X509_VERIFY_PARAM_get_depth(s->param);
1180 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1181 return (s->verify_callback);
1184 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1186 return (ctx->verify_mode);
1189 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1191 return X509_VERIFY_PARAM_get_depth(ctx->param);
1194 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1195 return (ctx->default_verify_callback);
1198 void SSL_set_verify(SSL *s, int mode,
1199 int (*callback) (int ok, X509_STORE_CTX *ctx))
1201 s->verify_mode = mode;
1202 if (callback != NULL)
1203 s->verify_callback = callback;
1206 void SSL_set_verify_depth(SSL *s, int depth)
1208 X509_VERIFY_PARAM_set_depth(s->param, depth);
1211 void SSL_set_read_ahead(SSL *s, int yes)
1213 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1216 int SSL_get_read_ahead(const SSL *s)
1218 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1221 int SSL_pending(const SSL *s)
1224 * SSL_pending cannot work properly if read-ahead is enabled
1225 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1226 * impossible to fix since SSL_pending cannot report errors that may be
1227 * observed while scanning the new data. (Note that SSL_pending() is
1228 * often used as a boolean value, so we'd better not return -1.)
1230 return (s->method->ssl_pending(s));
1233 int SSL_has_pending(const SSL *s)
1236 * Similar to SSL_pending() but returns a 1 to indicate that we have
1237 * unprocessed data available or 0 otherwise (as opposed to the number of
1238 * bytes available). Unlike SSL_pending() this will take into account
1239 * read_ahead data. A 1 return simply indicates that we have unprocessed
1240 * data. That data may not result in any application data, or we may fail
1241 * to parse the records for some reason.
1246 return RECORD_LAYER_read_pending(&s->rlayer);
1249 X509 *SSL_get_peer_certificate(const SSL *s)
1253 if ((s == NULL) || (s->session == NULL))
1256 r = s->session->peer;
1266 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1270 if ((s == NULL) || (s->session == NULL))
1273 r = s->session->peer_chain;
1276 * If we are a client, cert_chain includes the peer's own certificate; if
1277 * we are a server, it does not.
1284 * Now in theory, since the calling process own 't' it should be safe to
1285 * modify. We need to be able to read f without being hassled
1287 int SSL_copy_session_id(SSL *t, const SSL *f)
1290 /* Do we need to to SSL locking? */
1291 if (!SSL_set_session(t, SSL_get_session(f))) {
1296 * what if we are setup for one protocol version but want to talk another
1298 if (t->method != f->method) {
1299 t->method->ssl_free(t);
1300 t->method = f->method;
1301 if (t->method->ssl_new(t) == 0)
1305 CRYPTO_atomic_add(&f->cert->references, 1, &i, f->cert->lock);
1306 ssl_cert_free(t->cert);
1308 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
1315 /* Fix this so it checks all the valid key/cert options */
1316 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1318 if ((ctx == NULL) ||
1319 (ctx->cert->key->x509 == NULL)) {
1320 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1321 SSL_R_NO_CERTIFICATE_ASSIGNED);
1324 if (ctx->cert->key->privatekey == NULL) {
1325 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1326 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1329 return (X509_check_private_key
1330 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1333 /* Fix this function so that it takes an optional type parameter */
1334 int SSL_check_private_key(const SSL *ssl)
1337 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1340 if (ssl->cert->key->x509 == NULL) {
1341 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1344 if (ssl->cert->key->privatekey == NULL) {
1345 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1348 return (X509_check_private_key(ssl->cert->key->x509,
1349 ssl->cert->key->privatekey));
1352 int SSL_waiting_for_async(SSL *s)
1360 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1362 ASYNC_WAIT_CTX *ctx = s->waitctx;
1366 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1369 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1370 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1372 ASYNC_WAIT_CTX *ctx = s->waitctx;
1376 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1380 int SSL_accept(SSL *s)
1382 if (s->handshake_func == NULL) {
1383 /* Not properly initialized yet */
1384 SSL_set_accept_state(s);
1387 return SSL_do_handshake(s);
1390 int SSL_connect(SSL *s)
1392 if (s->handshake_func == NULL) {
1393 /* Not properly initialized yet */
1394 SSL_set_connect_state(s);
1397 return SSL_do_handshake(s);
1400 long SSL_get_default_timeout(const SSL *s)
1402 return (s->method->get_timeout());
1405 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1406 int (*func)(void *)) {
1408 if (s->waitctx == NULL) {
1409 s->waitctx = ASYNC_WAIT_CTX_new();
1410 if (s->waitctx == NULL)
1413 switch(ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1414 sizeof(struct ssl_async_args))) {
1416 s->rwstate = SSL_NOTHING;
1417 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1420 s->rwstate = SSL_ASYNC_PAUSED;
1423 s->rwstate = SSL_ASYNC_NO_JOBS;
1429 s->rwstate = SSL_NOTHING;
1430 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1431 /* Shouldn't happen */
1436 static int ssl_io_intern(void *vargs)
1438 struct ssl_async_args *args;
1443 args = (struct ssl_async_args *)vargs;
1447 switch (args->type) {
1449 return args->f.func_read(s, buf, num);
1451 return args->f.func_write(s, buf, num);
1453 return args->f.func_other(s);
1458 int SSL_read(SSL *s, void *buf, int num)
1460 if (s->handshake_func == NULL) {
1461 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1465 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1466 s->rwstate = SSL_NOTHING;
1470 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1471 struct ssl_async_args args;
1476 args.type = READFUNC;
1477 args.f.func_read = s->method->ssl_read;
1479 return ssl_start_async_job(s, &args, ssl_io_intern);
1481 return s->method->ssl_read(s, buf, num);
1485 int SSL_peek(SSL *s, void *buf, int num)
1487 if (s->handshake_func == NULL) {
1488 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1492 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1495 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1496 struct ssl_async_args args;
1501 args.type = READFUNC;
1502 args.f.func_read = s->method->ssl_peek;
1504 return ssl_start_async_job(s, &args, ssl_io_intern);
1506 return s->method->ssl_peek(s, buf, num);
1510 int SSL_write(SSL *s, const void *buf, int num)
1512 if (s->handshake_func == NULL) {
1513 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1517 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1518 s->rwstate = SSL_NOTHING;
1519 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1523 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1524 struct ssl_async_args args;
1527 args.buf = (void *)buf;
1529 args.type = WRITEFUNC;
1530 args.f.func_write = s->method->ssl_write;
1532 return ssl_start_async_job(s, &args, ssl_io_intern);
1534 return s->method->ssl_write(s, buf, num);
1538 int SSL_shutdown(SSL *s)
1541 * Note that this function behaves differently from what one might
1542 * expect. Return values are 0 for no success (yet), 1 for success; but
1543 * calling it once is usually not enough, even if blocking I/O is used
1544 * (see ssl3_shutdown).
1547 if (s->handshake_func == NULL) {
1548 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1552 if (!SSL_in_init(s)) {
1553 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1554 struct ssl_async_args args;
1557 args.type = OTHERFUNC;
1558 args.f.func_other = s->method->ssl_shutdown;
1560 return ssl_start_async_job(s, &args, ssl_io_intern);
1562 return s->method->ssl_shutdown(s);
1565 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1570 int SSL_renegotiate(SSL *s)
1572 if (s->renegotiate == 0)
1577 return (s->method->ssl_renegotiate(s));
1580 int SSL_renegotiate_abbreviated(SSL *s)
1582 if (s->renegotiate == 0)
1587 return (s->method->ssl_renegotiate(s));
1590 int SSL_renegotiate_pending(SSL *s)
1593 * becomes true when negotiation is requested; false again once a
1594 * handshake has finished
1596 return (s->renegotiate != 0);
1599 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1604 case SSL_CTRL_GET_READ_AHEAD:
1605 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1606 case SSL_CTRL_SET_READ_AHEAD:
1607 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1608 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1611 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1612 s->msg_callback_arg = parg;
1616 return (s->mode |= larg);
1617 case SSL_CTRL_CLEAR_MODE:
1618 return (s->mode &= ~larg);
1619 case SSL_CTRL_GET_MAX_CERT_LIST:
1620 return (s->max_cert_list);
1621 case SSL_CTRL_SET_MAX_CERT_LIST:
1622 l = s->max_cert_list;
1623 s->max_cert_list = larg;
1625 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1626 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1628 s->max_send_fragment = larg;
1629 if (s->max_send_fragment < s->split_send_fragment)
1630 s->split_send_fragment = s->max_send_fragment;
1632 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1633 if ((unsigned int)larg > s->max_send_fragment || larg == 0)
1635 s->split_send_fragment = larg;
1637 case SSL_CTRL_SET_MAX_PIPELINES:
1638 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1640 s->max_pipelines = larg;
1642 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
1644 case SSL_CTRL_GET_RI_SUPPORT:
1646 return s->s3->send_connection_binding;
1649 case SSL_CTRL_CERT_FLAGS:
1650 return (s->cert->cert_flags |= larg);
1651 case SSL_CTRL_CLEAR_CERT_FLAGS:
1652 return (s->cert->cert_flags &= ~larg);
1654 case SSL_CTRL_GET_RAW_CIPHERLIST:
1656 if (s->s3->tmp.ciphers_raw == NULL)
1658 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1659 return (int)s->s3->tmp.ciphers_rawlen;
1661 return TLS_CIPHER_LEN;
1663 case SSL_CTRL_GET_EXTMS_SUPPORT:
1664 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1666 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1670 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1671 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1672 &s->min_proto_version);
1673 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1674 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1675 &s->max_proto_version);
1677 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1681 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1684 case SSL_CTRL_SET_MSG_CALLBACK:
1685 s->msg_callback = (void (*)
1686 (int write_p, int version, int content_type,
1687 const void *buf, size_t len, SSL *ssl,
1692 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1696 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1698 return ctx->sessions;
1701 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1704 /* For some cases with ctx == NULL perform syntax checks */
1707 #ifndef OPENSSL_NO_EC
1708 case SSL_CTRL_SET_CURVES_LIST:
1709 return tls1_set_curves_list(NULL, NULL, parg);
1711 case SSL_CTRL_SET_SIGALGS_LIST:
1712 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1713 return tls1_set_sigalgs_list(NULL, parg, 0);
1720 case SSL_CTRL_GET_READ_AHEAD:
1721 return (ctx->read_ahead);
1722 case SSL_CTRL_SET_READ_AHEAD:
1723 l = ctx->read_ahead;
1724 ctx->read_ahead = larg;
1727 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1728 ctx->msg_callback_arg = parg;
1731 case SSL_CTRL_GET_MAX_CERT_LIST:
1732 return (ctx->max_cert_list);
1733 case SSL_CTRL_SET_MAX_CERT_LIST:
1734 l = ctx->max_cert_list;
1735 ctx->max_cert_list = larg;
1738 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1739 l = ctx->session_cache_size;
1740 ctx->session_cache_size = larg;
1742 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1743 return (ctx->session_cache_size);
1744 case SSL_CTRL_SET_SESS_CACHE_MODE:
1745 l = ctx->session_cache_mode;
1746 ctx->session_cache_mode = larg;
1748 case SSL_CTRL_GET_SESS_CACHE_MODE:
1749 return (ctx->session_cache_mode);
1751 case SSL_CTRL_SESS_NUMBER:
1752 return (lh_SSL_SESSION_num_items(ctx->sessions));
1753 case SSL_CTRL_SESS_CONNECT:
1754 return (ctx->stats.sess_connect);
1755 case SSL_CTRL_SESS_CONNECT_GOOD:
1756 return (ctx->stats.sess_connect_good);
1757 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1758 return (ctx->stats.sess_connect_renegotiate);
1759 case SSL_CTRL_SESS_ACCEPT:
1760 return (ctx->stats.sess_accept);
1761 case SSL_CTRL_SESS_ACCEPT_GOOD:
1762 return (ctx->stats.sess_accept_good);
1763 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1764 return (ctx->stats.sess_accept_renegotiate);
1765 case SSL_CTRL_SESS_HIT:
1766 return (ctx->stats.sess_hit);
1767 case SSL_CTRL_SESS_CB_HIT:
1768 return (ctx->stats.sess_cb_hit);
1769 case SSL_CTRL_SESS_MISSES:
1770 return (ctx->stats.sess_miss);
1771 case SSL_CTRL_SESS_TIMEOUTS:
1772 return (ctx->stats.sess_timeout);
1773 case SSL_CTRL_SESS_CACHE_FULL:
1774 return (ctx->stats.sess_cache_full);
1776 return (ctx->mode |= larg);
1777 case SSL_CTRL_CLEAR_MODE:
1778 return (ctx->mode &= ~larg);
1779 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1780 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1782 ctx->max_send_fragment = larg;
1783 if (ctx->max_send_fragment < ctx->split_send_fragment)
1784 ctx->split_send_fragment = ctx->max_send_fragment;
1786 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1787 if ((unsigned int)larg > ctx->max_send_fragment || larg == 0)
1789 ctx->split_send_fragment = larg;
1791 case SSL_CTRL_SET_MAX_PIPELINES:
1792 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1794 ctx->max_pipelines = larg;
1796 case SSL_CTRL_CERT_FLAGS:
1797 return (ctx->cert->cert_flags |= larg);
1798 case SSL_CTRL_CLEAR_CERT_FLAGS:
1799 return (ctx->cert->cert_flags &= ~larg);
1800 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1801 return ssl_set_version_bound(ctx->method->version, (int)larg,
1802 &ctx->min_proto_version);
1803 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1804 return ssl_set_version_bound(ctx->method->version, (int)larg,
1805 &ctx->max_proto_version);
1807 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1811 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1814 case SSL_CTRL_SET_MSG_CALLBACK:
1815 ctx->msg_callback = (void (*)
1816 (int write_p, int version, int content_type,
1817 const void *buf, size_t len, SSL *ssl,
1822 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1826 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1835 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1836 const SSL_CIPHER *const *bp)
1838 if ((*ap)->id > (*bp)->id)
1840 if ((*ap)->id < (*bp)->id)
1845 /** return a STACK of the ciphers available for the SSL and in order of
1847 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1850 if (s->cipher_list != NULL) {
1851 return (s->cipher_list);
1852 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1853 return (s->ctx->cipher_list);
1859 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
1861 if ((s == NULL) || (s->session == NULL) || !s->server)
1863 return s->session->ciphers;
1866 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1868 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1870 ciphers = SSL_get_ciphers(s);
1873 ssl_set_client_disabled(s);
1874 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1875 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1876 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1878 sk = sk_SSL_CIPHER_new_null();
1881 if (!sk_SSL_CIPHER_push(sk, c)) {
1882 sk_SSL_CIPHER_free(sk);
1890 /** return a STACK of the ciphers available for the SSL and in order of
1892 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1895 if (s->cipher_list_by_id != NULL) {
1896 return (s->cipher_list_by_id);
1897 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1898 return (s->ctx->cipher_list_by_id);
1904 /** The old interface to get the same thing as SSL_get_ciphers() */
1905 const char *SSL_get_cipher_list(const SSL *s, int n)
1907 const SSL_CIPHER *c;
1908 STACK_OF(SSL_CIPHER) *sk;
1912 sk = SSL_get_ciphers(s);
1913 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1915 c = sk_SSL_CIPHER_value(sk, n);
1921 /** return a STACK of the ciphers available for the SSL_CTX and in order of
1923 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
1926 return ctx->cipher_list;
1930 /** specify the ciphers to be used by default by the SSL_CTX */
1931 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1933 STACK_OF(SSL_CIPHER) *sk;
1935 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1936 &ctx->cipher_list_by_id, str, ctx->cert);
1938 * ssl_create_cipher_list may return an empty stack if it was unable to
1939 * find a cipher matching the given rule string (for example if the rule
1940 * string specifies a cipher which has been disabled). This is not an
1941 * error as far as ssl_create_cipher_list is concerned, and hence
1942 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1946 else if (sk_SSL_CIPHER_num(sk) == 0) {
1947 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1953 /** specify the ciphers to be used by the SSL */
1954 int SSL_set_cipher_list(SSL *s, const char *str)
1956 STACK_OF(SSL_CIPHER) *sk;
1958 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1959 &s->cipher_list_by_id, str, s->cert);
1960 /* see comment in SSL_CTX_set_cipher_list */
1963 else if (sk_SSL_CIPHER_num(sk) == 0) {
1964 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1970 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1973 STACK_OF(SSL_CIPHER) *sk;
1974 const SSL_CIPHER *c;
1977 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1981 sk = s->session->ciphers;
1983 if (sk_SSL_CIPHER_num(sk) == 0)
1986 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1989 c = sk_SSL_CIPHER_value(sk, i);
1990 n = strlen(c->name);
1997 memcpy(p, c->name, n + 1);
2006 /** return a servername extension value if provided in Client Hello, or NULL.
2007 * So far, only host_name types are defined (RFC 3546).
2010 const char *SSL_get_servername(const SSL *s, const int type)
2012 if (type != TLSEXT_NAMETYPE_host_name)
2015 return s->session && !s->tlsext_hostname ?
2016 s->session->tlsext_hostname : s->tlsext_hostname;
2019 int SSL_get_servername_type(const SSL *s)
2022 && (!s->tlsext_hostname ? s->session->
2023 tlsext_hostname : s->tlsext_hostname))
2024 return TLSEXT_NAMETYPE_host_name;
2029 * SSL_select_next_proto implements the standard protocol selection. It is
2030 * expected that this function is called from the callback set by
2031 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2032 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2033 * not included in the length. A byte string of length 0 is invalid. No byte
2034 * string may be truncated. The current, but experimental algorithm for
2035 * selecting the protocol is: 1) If the server doesn't support NPN then this
2036 * is indicated to the callback. In this case, the client application has to
2037 * abort the connection or have a default application level protocol. 2) If
2038 * the server supports NPN, but advertises an empty list then the client
2039 * selects the first protcol in its list, but indicates via the API that this
2040 * fallback case was enacted. 3) Otherwise, the client finds the first
2041 * protocol in the server's list that it supports and selects this protocol.
2042 * This is because it's assumed that the server has better information about
2043 * which protocol a client should use. 4) If the client doesn't support any
2044 * of the server's advertised protocols, then this is treated the same as
2045 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2046 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2048 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2049 const unsigned char *server,
2050 unsigned int server_len,
2051 const unsigned char *client,
2052 unsigned int client_len)
2055 const unsigned char *result;
2056 int status = OPENSSL_NPN_UNSUPPORTED;
2059 * For each protocol in server preference order, see if we support it.
2061 for (i = 0; i < server_len;) {
2062 for (j = 0; j < client_len;) {
2063 if (server[i] == client[j] &&
2064 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2065 /* We found a match */
2066 result = &server[i];
2067 status = OPENSSL_NPN_NEGOTIATED;
2077 /* There's no overlap between our protocols and the server's list. */
2079 status = OPENSSL_NPN_NO_OVERLAP;
2082 *out = (unsigned char *)result + 1;
2083 *outlen = result[0];
2087 #ifndef OPENSSL_NO_NEXTPROTONEG
2089 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2090 * client's requested protocol for this connection and returns 0. If the
2091 * client didn't request any protocol, then *data is set to NULL. Note that
2092 * the client can request any protocol it chooses. The value returned from
2093 * this function need not be a member of the list of supported protocols
2094 * provided by the callback.
2096 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2099 *data = s->next_proto_negotiated;
2103 *len = s->next_proto_negotiated_len;
2108 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
2109 * a TLS server needs a list of supported protocols for Next Protocol
2110 * Negotiation. The returned list must be in wire format. The list is
2111 * returned by setting |out| to point to it and |outlen| to its length. This
2112 * memory will not be modified, but one should assume that the SSL* keeps a
2113 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2114 * wishes to advertise. Otherwise, no such extension will be included in the
2117 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
2118 int (*cb) (SSL *ssl,
2121 unsigned int *outlen,
2122 void *arg), void *arg)
2124 ctx->next_protos_advertised_cb = cb;
2125 ctx->next_protos_advertised_cb_arg = arg;
2129 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2130 * client needs to select a protocol from the server's provided list. |out|
2131 * must be set to point to the selected protocol (which may be within |in|).
2132 * The length of the protocol name must be written into |outlen|. The
2133 * server's advertised protocols are provided in |in| and |inlen|. The
2134 * callback can assume that |in| is syntactically valid. The client must
2135 * select a protocol. It is fatal to the connection if this callback returns
2136 * a value other than SSL_TLSEXT_ERR_OK.
2138 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
2139 int (*cb) (SSL *s, unsigned char **out,
2140 unsigned char *outlen,
2141 const unsigned char *in,
2143 void *arg), void *arg)
2145 ctx->next_proto_select_cb = cb;
2146 ctx->next_proto_select_cb_arg = arg;
2151 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2152 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2153 * length-prefixed strings). Returns 0 on success.
2155 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2156 unsigned int protos_len)
2158 OPENSSL_free(ctx->alpn_client_proto_list);
2159 ctx->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2160 if (ctx->alpn_client_proto_list == NULL) {
2161 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2164 ctx->alpn_client_proto_list_len = protos_len;
2170 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2171 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2172 * length-prefixed strings). Returns 0 on success.
2174 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2175 unsigned int protos_len)
2177 OPENSSL_free(ssl->alpn_client_proto_list);
2178 ssl->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2179 if (ssl->alpn_client_proto_list == NULL) {
2180 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2183 ssl->alpn_client_proto_list_len = protos_len;
2189 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2190 * called during ClientHello processing in order to select an ALPN protocol
2191 * from the client's list of offered protocols.
2193 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2194 int (*cb) (SSL *ssl,
2195 const unsigned char **out,
2196 unsigned char *outlen,
2197 const unsigned char *in,
2199 void *arg), void *arg)
2201 ctx->alpn_select_cb = cb;
2202 ctx->alpn_select_cb_arg = arg;
2206 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2207 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2208 * (not including the leading length-prefix byte). If the server didn't
2209 * respond with a negotiated protocol then |*len| will be zero.
2211 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2216 *data = ssl->s3->alpn_selected;
2220 *len = ssl->s3->alpn_selected_len;
2224 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2225 const char *label, size_t llen,
2226 const unsigned char *p, size_t plen,
2229 if (s->version < TLS1_VERSION)
2232 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2237 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2242 ((unsigned int)a->session_id[0]) |
2243 ((unsigned int)a->session_id[1] << 8L) |
2244 ((unsigned long)a->session_id[2] << 16L) |
2245 ((unsigned long)a->session_id[3] << 24L);
2250 * NB: If this function (or indeed the hash function which uses a sort of
2251 * coarser function than this one) is changed, ensure
2252 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2253 * being able to construct an SSL_SESSION that will collide with any existing
2254 * session with a matching session ID.
2256 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2258 if (a->ssl_version != b->ssl_version)
2260 if (a->session_id_length != b->session_id_length)
2262 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2266 * These wrapper functions should remain rather than redeclaring
2267 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2268 * variable. The reason is that the functions aren't static, they're exposed
2272 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2274 SSL_CTX *ret = NULL;
2277 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2281 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2284 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
2285 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE);
2289 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2290 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2293 ret = OPENSSL_zalloc(sizeof(*ret));
2298 ret->min_proto_version = 0;
2299 ret->max_proto_version = 0;
2300 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2301 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2302 /* We take the system default. */
2303 ret->session_timeout = meth->get_timeout();
2304 ret->references = 1;
2305 ret->lock = CRYPTO_THREAD_lock_new();
2306 if (ret->lock == NULL) {
2307 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2311 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2312 ret->verify_mode = SSL_VERIFY_NONE;
2313 if ((ret->cert = ssl_cert_new()) == NULL)
2316 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2317 if (ret->sessions == NULL)
2319 ret->cert_store = X509_STORE_new();
2320 if (ret->cert_store == NULL)
2322 #ifndef OPENSSL_NO_CT
2323 ret->ctlog_store = CTLOG_STORE_new();
2324 if (ret->ctlog_store == NULL)
2327 if (!ssl_create_cipher_list(ret->method,
2328 &ret->cipher_list, &ret->cipher_list_by_id,
2329 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2330 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2331 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2335 ret->param = X509_VERIFY_PARAM_new();
2336 if (ret->param == NULL)
2339 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2340 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2343 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2344 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2348 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
2351 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2354 /* No compression for DTLS */
2355 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2356 ret->comp_methods = SSL_COMP_get_compression_methods();
2358 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2359 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2361 /* Setup RFC5077 ticket keys */
2362 if ((RAND_bytes(ret->tlsext_tick_key_name, sizeof(ret->tlsext_tick_key_name)) <= 0)
2363 || (RAND_bytes(ret->tlsext_tick_hmac_key, sizeof(ret->tlsext_tick_hmac_key)) <= 0)
2364 || (RAND_bytes(ret->tlsext_tick_aes_key, sizeof(ret->tlsext_tick_aes_key)) <= 0))
2365 ret->options |= SSL_OP_NO_TICKET;
2367 #ifndef OPENSSL_NO_SRP
2368 if (!SSL_CTX_SRP_CTX_init(ret))
2371 #ifndef OPENSSL_NO_ENGINE
2372 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2373 # define eng_strx(x) #x
2374 # define eng_str(x) eng_strx(x)
2375 /* Use specific client engine automatically... ignore errors */
2378 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2381 ENGINE_load_builtin_engines();
2382 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2384 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2390 * Default is to connect to non-RI servers. When RI is more widely
2391 * deployed might change this.
2393 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2395 * Disable compression by default to prevent CRIME. Applications can
2396 * re-enable compression by configuring
2397 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2398 * or by using the SSL_CONF library.
2400 ret->options |= SSL_OP_NO_COMPRESSION;
2402 ret->tlsext_status_type = -1;
2406 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2412 int SSL_CTX_up_ref(SSL_CTX *ctx)
2416 if (CRYPTO_atomic_add(&ctx->references, 1, &i, ctx->lock) <= 0)
2419 REF_PRINT_COUNT("SSL_CTX", ctx);
2420 REF_ASSERT_ISNT(i < 2);
2421 return ((i > 1) ? 1 : 0);
2424 void SSL_CTX_free(SSL_CTX *a)
2431 CRYPTO_atomic_add(&a->references, -1, &i, a->lock);
2432 REF_PRINT_COUNT("SSL_CTX", a);
2435 REF_ASSERT_ISNT(i < 0);
2437 X509_VERIFY_PARAM_free(a->param);
2438 dane_ctx_final(&a->dane);
2441 * Free internal session cache. However: the remove_cb() may reference
2442 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2443 * after the sessions were flushed.
2444 * As the ex_data handling routines might also touch the session cache,
2445 * the most secure solution seems to be: empty (flush) the cache, then
2446 * free ex_data, then finally free the cache.
2447 * (See ticket [openssl.org #212].)
2449 if (a->sessions != NULL)
2450 SSL_CTX_flush_sessions(a, 0);
2452 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2453 lh_SSL_SESSION_free(a->sessions);
2454 X509_STORE_free(a->cert_store);
2455 #ifndef OPENSSL_NO_CT
2456 CTLOG_STORE_free(a->ctlog_store);
2458 sk_SSL_CIPHER_free(a->cipher_list);
2459 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2460 ssl_cert_free(a->cert);
2461 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2462 sk_X509_pop_free(a->extra_certs, X509_free);
2463 a->comp_methods = NULL;
2464 #ifndef OPENSSL_NO_SRTP
2465 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2467 #ifndef OPENSSL_NO_SRP
2468 SSL_CTX_SRP_CTX_free(a);
2470 #ifndef OPENSSL_NO_ENGINE
2471 ENGINE_finish(a->client_cert_engine);
2474 #ifndef OPENSSL_NO_EC
2475 OPENSSL_free(a->tlsext_ecpointformatlist);
2476 OPENSSL_free(a->tlsext_ellipticcurvelist);
2478 OPENSSL_free(a->alpn_client_proto_list);
2480 CRYPTO_THREAD_lock_free(a->lock);
2485 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2487 ctx->default_passwd_callback = cb;
2490 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2492 ctx->default_passwd_callback_userdata = u;
2495 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2497 return ctx->default_passwd_callback;
2500 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2502 return ctx->default_passwd_callback_userdata;
2505 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2507 s->default_passwd_callback = cb;
2510 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2512 s->default_passwd_callback_userdata = u;
2515 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2517 return s->default_passwd_callback;
2520 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2522 return s->default_passwd_callback_userdata;
2525 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2526 int (*cb) (X509_STORE_CTX *, void *),
2529 ctx->app_verify_callback = cb;
2530 ctx->app_verify_arg = arg;
2533 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2534 int (*cb) (int, X509_STORE_CTX *))
2536 ctx->verify_mode = mode;
2537 ctx->default_verify_callback = cb;
2540 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2542 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2545 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2548 ssl_cert_set_cert_cb(c->cert, cb, arg);
2551 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2553 ssl_cert_set_cert_cb(s->cert, cb, arg);
2556 void ssl_set_masks(SSL *s)
2558 #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST)
2562 uint32_t *pvalid = s->s3->tmp.valid_flags;
2563 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
2564 unsigned long mask_k, mask_a;
2565 #ifndef OPENSSL_NO_EC
2566 int have_ecc_cert, ecdsa_ok;
2572 #ifndef OPENSSL_NO_DH
2573 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2578 rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
2579 rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
2580 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
2581 #ifndef OPENSSL_NO_EC
2582 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2588 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
2589 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
2592 #ifndef OPENSSL_NO_GOST
2593 cpk = &(c->pkeys[SSL_PKEY_GOST12_512]);
2594 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2595 mask_k |= SSL_kGOST;
2596 mask_a |= SSL_aGOST12;
2598 cpk = &(c->pkeys[SSL_PKEY_GOST12_256]);
2599 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2600 mask_k |= SSL_kGOST;
2601 mask_a |= SSL_aGOST12;
2603 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2604 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2605 mask_k |= SSL_kGOST;
2606 mask_a |= SSL_aGOST01;
2616 if (rsa_enc || rsa_sign) {
2624 mask_a |= SSL_aNULL;
2627 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2628 * depending on the key usage extension.
2630 #ifndef OPENSSL_NO_EC
2631 if (have_ecc_cert) {
2633 cpk = &c->pkeys[SSL_PKEY_ECC];
2635 ex_kusage = X509_get_key_usage(x);
2636 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2637 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2640 mask_a |= SSL_aECDSA;
2644 #ifndef OPENSSL_NO_EC
2645 mask_k |= SSL_kECDHE;
2648 #ifndef OPENSSL_NO_PSK
2651 if (mask_k & SSL_kRSA)
2652 mask_k |= SSL_kRSAPSK;
2653 if (mask_k & SSL_kDHE)
2654 mask_k |= SSL_kDHEPSK;
2655 if (mask_k & SSL_kECDHE)
2656 mask_k |= SSL_kECDHEPSK;
2659 s->s3->tmp.mask_k = mask_k;
2660 s->s3->tmp.mask_a = mask_a;
2663 #ifndef OPENSSL_NO_EC
2665 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2667 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
2668 /* key usage, if present, must allow signing */
2669 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
2670 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2671 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2675 return 1; /* all checks are ok */
2680 static int ssl_get_server_cert_index(const SSL *s)
2683 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2684 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2685 idx = SSL_PKEY_RSA_SIGN;
2686 if (idx == SSL_PKEY_GOST_EC) {
2687 if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)
2688 idx = SSL_PKEY_GOST12_512;
2689 else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509)
2690 idx = SSL_PKEY_GOST12_256;
2691 else if (s->cert->pkeys[SSL_PKEY_GOST01].x509)
2692 idx = SSL_PKEY_GOST01;
2697 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2701 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2707 if (!s->s3 || !s->s3->tmp.new_cipher)
2711 i = ssl_get_server_cert_index(s);
2713 /* This may or may not be an error. */
2718 return &c->pkeys[i];
2721 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2724 unsigned long alg_a;
2728 alg_a = cipher->algorithm_auth;
2731 if ((alg_a & SSL_aDSS) &&
2732 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2733 idx = SSL_PKEY_DSA_SIGN;
2734 else if (alg_a & SSL_aRSA) {
2735 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2736 idx = SSL_PKEY_RSA_SIGN;
2737 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2738 idx = SSL_PKEY_RSA_ENC;
2739 } else if ((alg_a & SSL_aECDSA) &&
2740 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2743 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2747 *pmd = s->s3->tmp.md[idx];
2748 return c->pkeys[idx].privatekey;
2751 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2752 size_t *serverinfo_length)
2756 *serverinfo_length = 0;
2759 i = ssl_get_server_cert_index(s);
2763 if (c->pkeys[i].serverinfo == NULL)
2766 *serverinfo = c->pkeys[i].serverinfo;
2767 *serverinfo_length = c->pkeys[i].serverinfo_length;
2771 void ssl_update_cache(SSL *s, int mode)
2776 * If the session_id_length is 0, we are not supposed to cache it, and it
2777 * would be rather hard to do anyway :-)
2779 if (s->session->session_id_length == 0)
2782 i = s->session_ctx->session_cache_mode;
2783 if ((i & mode) && (!s->hit)
2784 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2785 || SSL_CTX_add_session(s->session_ctx, s->session))
2786 && (s->session_ctx->new_session_cb != NULL)) {
2787 SSL_SESSION_up_ref(s->session);
2788 if (!s->session_ctx->new_session_cb(s, s->session))
2789 SSL_SESSION_free(s->session);
2792 /* auto flush every 255 connections */
2793 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2794 if ((((mode & SSL_SESS_CACHE_CLIENT)
2795 ? s->session_ctx->stats.sess_connect_good
2796 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2797 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2802 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2807 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2812 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2816 if (s->method != meth) {
2817 const SSL_METHOD *sm = s->method;
2818 int (*hf)(SSL *) = s->handshake_func;
2820 if (sm->version == meth->version)
2825 ret = s->method->ssl_new(s);
2828 if (hf == sm->ssl_connect)
2829 s->handshake_func = meth->ssl_connect;
2830 else if (hf == sm->ssl_accept)
2831 s->handshake_func = meth->ssl_accept;
2836 int SSL_get_error(const SSL *s, int i)
2843 return (SSL_ERROR_NONE);
2846 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2847 * where we do encode the error
2849 if ((l = ERR_peek_error()) != 0) {
2850 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2851 return (SSL_ERROR_SYSCALL);
2853 return (SSL_ERROR_SSL);
2857 if (SSL_want_read(s)) {
2858 bio = SSL_get_rbio(s);
2859 if (BIO_should_read(bio))
2860 return (SSL_ERROR_WANT_READ);
2861 else if (BIO_should_write(bio))
2863 * This one doesn't make too much sense ... We never try to write
2864 * to the rbio, and an application program where rbio and wbio
2865 * are separate couldn't even know what it should wait for.
2866 * However if we ever set s->rwstate incorrectly (so that we have
2867 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2868 * wbio *are* the same, this test works around that bug; so it
2869 * might be safer to keep it.
2871 return (SSL_ERROR_WANT_WRITE);
2872 else if (BIO_should_io_special(bio)) {
2873 reason = BIO_get_retry_reason(bio);
2874 if (reason == BIO_RR_CONNECT)
2875 return (SSL_ERROR_WANT_CONNECT);
2876 else if (reason == BIO_RR_ACCEPT)
2877 return (SSL_ERROR_WANT_ACCEPT);
2879 return (SSL_ERROR_SYSCALL); /* unknown */
2883 if (SSL_want_write(s)) {
2884 bio = SSL_get_wbio(s);
2885 if (BIO_should_write(bio))
2886 return (SSL_ERROR_WANT_WRITE);
2887 else if (BIO_should_read(bio))
2889 * See above (SSL_want_read(s) with BIO_should_write(bio))
2891 return (SSL_ERROR_WANT_READ);
2892 else if (BIO_should_io_special(bio)) {
2893 reason = BIO_get_retry_reason(bio);
2894 if (reason == BIO_RR_CONNECT)
2895 return (SSL_ERROR_WANT_CONNECT);
2896 else if (reason == BIO_RR_ACCEPT)
2897 return (SSL_ERROR_WANT_ACCEPT);
2899 return (SSL_ERROR_SYSCALL);
2902 if (SSL_want_x509_lookup(s)) {
2903 return (SSL_ERROR_WANT_X509_LOOKUP);
2905 if (SSL_want_async(s)) {
2906 return SSL_ERROR_WANT_ASYNC;
2908 if (SSL_want_async_job(s)) {
2909 return SSL_ERROR_WANT_ASYNC_JOB;
2914 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2915 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2916 return (SSL_ERROR_ZERO_RETURN);
2918 return (SSL_ERROR_SYSCALL);
2921 static int ssl_do_handshake_intern(void *vargs)
2923 struct ssl_async_args *args;
2926 args = (struct ssl_async_args *)vargs;
2929 return s->handshake_func(s);
2932 int SSL_do_handshake(SSL *s)
2936 if (s->handshake_func == NULL) {
2937 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2941 s->method->ssl_renegotiate_check(s);
2943 if (SSL_in_init(s) || SSL_in_before(s)) {
2944 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2945 struct ssl_async_args args;
2949 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
2951 ret = s->handshake_func(s);
2957 void SSL_set_accept_state(SSL *s)
2961 ossl_statem_clear(s);
2962 s->handshake_func = s->method->ssl_accept;
2966 void SSL_set_connect_state(SSL *s)
2970 ossl_statem_clear(s);
2971 s->handshake_func = s->method->ssl_connect;
2975 int ssl_undefined_function(SSL *s)
2977 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2981 int ssl_undefined_void_function(void)
2983 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2984 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2988 int ssl_undefined_const_function(const SSL *s)
2993 const SSL_METHOD *ssl_bad_method(int ver)
2995 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2999 const char *ssl_protocol_to_string(int version)
3001 if (version == TLS1_2_VERSION)
3003 else if (version == TLS1_1_VERSION)
3005 else if (version == TLS1_VERSION)
3007 else if (version == SSL3_VERSION)
3009 else if (version == DTLS1_BAD_VER)
3011 else if (version == DTLS1_VERSION)
3013 else if (version == DTLS1_2_VERSION)
3019 const char *SSL_get_version(const SSL *s)
3021 return ssl_protocol_to_string(s->version);
3024 SSL *SSL_dup(SSL *s)
3026 STACK_OF(X509_NAME) *sk;
3031 /* If we're not quiescent, just up_ref! */
3032 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3033 CRYPTO_atomic_add(&s->references, 1, &i, s->lock);
3038 * Otherwise, copy configuration state, and session if set.
3040 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3043 if (s->session != NULL) {
3045 * Arranges to share the same session via up_ref. This "copies"
3046 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3048 if (!SSL_copy_session_id(ret, s))
3052 * No session has been established yet, so we have to expect that
3053 * s->cert or ret->cert will be changed later -- they should not both
3054 * point to the same object, and thus we can't use
3055 * SSL_copy_session_id.
3057 if (!SSL_set_ssl_method(ret, s->method))
3060 if (s->cert != NULL) {
3061 ssl_cert_free(ret->cert);
3062 ret->cert = ssl_cert_dup(s->cert);
3063 if (ret->cert == NULL)
3067 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
3071 if (!ssl_dane_dup(ret, s))
3073 ret->version = s->version;
3074 ret->options = s->options;
3075 ret->mode = s->mode;
3076 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3077 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3078 ret->msg_callback = s->msg_callback;
3079 ret->msg_callback_arg = s->msg_callback_arg;
3080 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3081 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3082 ret->generate_session_id = s->generate_session_id;
3084 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3086 /* copy app data, a little dangerous perhaps */
3087 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3090 /* setup rbio, and wbio */
3091 if (s->rbio != NULL) {
3092 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3095 if (s->wbio != NULL) {
3096 if (s->wbio != s->rbio) {
3097 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3100 ret->wbio = ret->rbio;
3103 ret->server = s->server;
3104 if (s->handshake_func) {
3106 SSL_set_accept_state(ret);
3108 SSL_set_connect_state(ret);
3110 ret->shutdown = s->shutdown;
3113 ret->default_passwd_callback = s->default_passwd_callback;
3114 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3116 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3118 /* dup the cipher_list and cipher_list_by_id stacks */
3119 if (s->cipher_list != NULL) {
3120 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3123 if (s->cipher_list_by_id != NULL)
3124 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3128 /* Dup the client_CA list */
3129 if (s->client_CA != NULL) {
3130 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
3132 ret->client_CA = sk;
3133 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3134 xn = sk_X509_NAME_value(sk, i);
3135 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3148 void ssl_clear_cipher_ctx(SSL *s)
3150 if (s->enc_read_ctx != NULL) {
3151 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3152 s->enc_read_ctx = NULL;
3154 if (s->enc_write_ctx != NULL) {
3155 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3156 s->enc_write_ctx = NULL;
3158 #ifndef OPENSSL_NO_COMP
3159 COMP_CTX_free(s->expand);
3161 COMP_CTX_free(s->compress);
3166 X509 *SSL_get_certificate(const SSL *s)
3168 if (s->cert != NULL)
3169 return (s->cert->key->x509);
3174 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3176 if (s->cert != NULL)
3177 return (s->cert->key->privatekey);
3182 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3184 if (ctx->cert != NULL)
3185 return ctx->cert->key->x509;
3190 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3192 if (ctx->cert != NULL)
3193 return ctx->cert->key->privatekey;
3198 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3200 if ((s->session != NULL) && (s->session->cipher != NULL))
3201 return (s->session->cipher);
3205 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3207 #ifndef OPENSSL_NO_COMP
3208 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3214 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3216 #ifndef OPENSSL_NO_COMP
3217 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3223 int ssl_init_wbio_buffer(SSL *s)
3227 if (s->bbio == NULL) {
3228 bbio = BIO_new(BIO_f_buffer());
3232 s->wbio = BIO_push(bbio, s->wbio);
3235 (void)BIO_reset(bbio);
3238 if (!BIO_set_read_buffer_size(bbio, 1)) {
3239 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3246 void ssl_free_wbio_buffer(SSL *s)
3248 /* callers ensure s is never null */
3249 if (s->bbio == NULL)
3252 if (s->bbio == s->wbio) {
3253 /* remove buffering */
3254 s->wbio = BIO_pop(s->wbio);
3255 assert(s->wbio != NULL);
3261 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3263 ctx->quiet_shutdown = mode;
3266 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3268 return (ctx->quiet_shutdown);
3271 void SSL_set_quiet_shutdown(SSL *s, int mode)
3273 s->quiet_shutdown = mode;
3276 int SSL_get_quiet_shutdown(const SSL *s)
3278 return (s->quiet_shutdown);
3281 void SSL_set_shutdown(SSL *s, int mode)
3286 int SSL_get_shutdown(const SSL *s)
3291 int SSL_version(const SSL *s)
3296 int SSL_client_version(const SSL *s)
3298 return s->client_version;
3301 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3306 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3309 if (ssl->ctx == ctx)
3312 ctx = ssl->initial_ctx;
3313 new_cert = ssl_cert_dup(ctx->cert);
3314 if (new_cert == NULL) {
3317 ssl_cert_free(ssl->cert);
3318 ssl->cert = new_cert;
3321 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3322 * so setter APIs must prevent invalid lengths from entering the system.
3324 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3327 * If the session ID context matches that of the parent SSL_CTX,
3328 * inherit it from the new SSL_CTX as well. If however the context does
3329 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3330 * leave it unchanged.
3332 if ((ssl->ctx != NULL) &&
3333 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3334 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3335 ssl->sid_ctx_length = ctx->sid_ctx_length;
3336 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3339 SSL_CTX_up_ref(ctx);
3340 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3346 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3348 return (X509_STORE_set_default_paths(ctx->cert_store));
3351 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3353 X509_LOOKUP *lookup;
3355 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3358 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3360 /* Clear any errors if the default directory does not exist */
3366 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3368 X509_LOOKUP *lookup;
3370 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3374 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3376 /* Clear any errors if the default file does not exist */
3382 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3385 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3388 void SSL_set_info_callback(SSL *ssl,
3389 void (*cb) (const SSL *ssl, int type, int val))
3391 ssl->info_callback = cb;
3395 * One compiler (Diab DCC) doesn't like argument names in returned function
3398 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3401 return ssl->info_callback;
3404 void SSL_set_verify_result(SSL *ssl, long arg)
3406 ssl->verify_result = arg;
3409 long SSL_get_verify_result(const SSL *ssl)
3411 return (ssl->verify_result);
3414 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3417 return sizeof(ssl->s3->client_random);
3418 if (outlen > sizeof(ssl->s3->client_random))
3419 outlen = sizeof(ssl->s3->client_random);
3420 memcpy(out, ssl->s3->client_random, outlen);
3424 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3427 return sizeof(ssl->s3->server_random);
3428 if (outlen > sizeof(ssl->s3->server_random))
3429 outlen = sizeof(ssl->s3->server_random);
3430 memcpy(out, ssl->s3->server_random, outlen);
3434 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3435 unsigned char *out, size_t outlen)
3437 if (session->master_key_length < 0) {
3438 /* Should never happen */
3442 return session->master_key_length;
3443 if (outlen > (size_t)session->master_key_length)
3444 outlen = session->master_key_length;
3445 memcpy(out, session->master_key, outlen);
3449 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3451 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3454 void *SSL_get_ex_data(const SSL *s, int idx)
3456 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3459 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3461 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3464 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3466 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3474 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3476 return (ctx->cert_store);
3479 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3481 X509_STORE_free(ctx->cert_store);
3482 ctx->cert_store = store;
3485 int SSL_want(const SSL *s)
3487 return (s->rwstate);
3491 * \brief Set the callback for generating temporary DH keys.
3492 * \param ctx the SSL context.
3493 * \param dh the callback
3496 #ifndef OPENSSL_NO_DH
3497 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3498 DH *(*dh) (SSL *ssl, int is_export,
3501 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3504 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3507 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3511 #ifndef OPENSSL_NO_PSK
3512 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3514 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3515 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3516 SSL_R_DATA_LENGTH_TOO_LONG);
3519 OPENSSL_free(ctx->cert->psk_identity_hint);
3520 if (identity_hint != NULL) {
3521 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3522 if (ctx->cert->psk_identity_hint == NULL)
3525 ctx->cert->psk_identity_hint = NULL;
3529 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3534 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3535 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3538 OPENSSL_free(s->cert->psk_identity_hint);
3539 if (identity_hint != NULL) {
3540 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3541 if (s->cert->psk_identity_hint == NULL)
3544 s->cert->psk_identity_hint = NULL;
3548 const char *SSL_get_psk_identity_hint(const SSL *s)
3550 if (s == NULL || s->session == NULL)
3552 return (s->session->psk_identity_hint);
3555 const char *SSL_get_psk_identity(const SSL *s)
3557 if (s == NULL || s->session == NULL)
3559 return (s->session->psk_identity);
3562 void SSL_set_psk_client_callback(SSL *s,
3563 unsigned int (*cb) (SSL *ssl,
3572 s->psk_client_callback = cb;
3575 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3576 unsigned int (*cb) (SSL *ssl,
3585 ctx->psk_client_callback = cb;
3588 void SSL_set_psk_server_callback(SSL *s,
3589 unsigned int (*cb) (SSL *ssl,
3590 const char *identity,
3595 s->psk_server_callback = cb;
3598 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3599 unsigned int (*cb) (SSL *ssl,
3600 const char *identity,
3605 ctx->psk_server_callback = cb;
3609 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3610 void (*cb) (int write_p, int version,
3611 int content_type, const void *buf,
3612 size_t len, SSL *ssl, void *arg))
3614 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3617 void SSL_set_msg_callback(SSL *ssl,
3618 void (*cb) (int write_p, int version,
3619 int content_type, const void *buf,
3620 size_t len, SSL *ssl, void *arg))
3622 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3625 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3626 int (*cb) (SSL *ssl,
3630 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3631 (void (*)(void))cb);
3634 void SSL_set_not_resumable_session_callback(SSL *ssl,
3635 int (*cb) (SSL *ssl,
3636 int is_forward_secure))
3638 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3639 (void (*)(void))cb);
3643 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3644 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3645 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3649 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3651 ssl_clear_hash_ctx(hash);
3652 *hash = EVP_MD_CTX_new();
3653 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3654 EVP_MD_CTX_free(*hash);
3661 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3665 EVP_MD_CTX_free(*hash);
3669 /* Retrieve handshake hashes */
3670 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3672 EVP_MD_CTX *ctx = NULL;
3673 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
3674 int ret = EVP_MD_CTX_size(hdgst);
3675 if (ret < 0 || ret > outlen) {
3679 ctx = EVP_MD_CTX_new();
3684 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
3685 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
3688 EVP_MD_CTX_free(ctx);
3692 int SSL_session_reused(SSL *s)
3697 int SSL_is_server(SSL *s)
3702 #if OPENSSL_API_COMPAT < 0x10100000L
3703 void SSL_set_debug(SSL *s, int debug)
3705 /* Old function was do-nothing anyway... */
3712 void SSL_set_security_level(SSL *s, int level)
3714 s->cert->sec_level = level;
3717 int SSL_get_security_level(const SSL *s)
3719 return s->cert->sec_level;
3722 void SSL_set_security_callback(SSL *s,
3723 int (*cb) (const SSL *s, const SSL_CTX *ctx, int op,
3724 int bits, int nid, void *other,
3727 s->cert->sec_cb = cb;
3730 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s, const SSL_CTX *ctx, int op,
3732 void *other, void *ex) {
3733 return s->cert->sec_cb;
3736 void SSL_set0_security_ex_data(SSL *s, void *ex)
3738 s->cert->sec_ex = ex;
3741 void *SSL_get0_security_ex_data(const SSL *s)
3743 return s->cert->sec_ex;
3746 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3748 ctx->cert->sec_level = level;
3751 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3753 return ctx->cert->sec_level;
3756 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3757 int (*cb) (const SSL *s, const SSL_CTX *ctx, int op,
3758 int bits, int nid, void *other,
3761 ctx->cert->sec_cb = cb;
3764 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
3770 return ctx->cert->sec_cb;
3773 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3775 ctx->cert->sec_ex = ex;
3778 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3780 return ctx->cert->sec_ex;
3785 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3786 * can return unsigned long, instead of the generic long return value from the
3787 * control interface.
3789 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
3791 return ctx->options;
3793 unsigned long SSL_get_options(const SSL* s)
3797 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
3799 return ctx->options |= op;
3801 unsigned long SSL_set_options(SSL *s, unsigned long op)
3803 return s->options |= op;
3805 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
3807 return ctx->options &= ~op;
3809 unsigned long SSL_clear_options(SSL *s, unsigned long op)
3811 return s->options &= ~op;
3814 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
3816 return s->verified_chain;
3819 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
3821 #ifndef OPENSSL_NO_CT
3824 * Moves SCTs from the |src| stack to the |dst| stack.
3825 * The source of each SCT will be set to |origin|.
3826 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3828 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3830 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src, sct_source_t origin)
3836 *dst = sk_SCT_new_null();
3838 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
3843 while ((sct = sk_SCT_pop(src)) != NULL) {
3844 if (SCT_set_source(sct, origin) != 1)
3847 if (sk_SCT_push(*dst, sct) <= 0)
3855 sk_SCT_push(src, sct); /* Put the SCT back */
3860 * Look for data collected during ServerHello and parse if found.
3861 * Return 1 on success, 0 on failure.
3863 static int ct_extract_tls_extension_scts(SSL *s)
3865 int scts_extracted = 0;
3867 if (s->tlsext_scts != NULL) {
3868 const unsigned char *p = s->tlsext_scts;
3869 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->tlsext_scts_len);
3871 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
3873 SCT_LIST_free(scts);
3876 return scts_extracted;
3880 * Checks for an OCSP response and then attempts to extract any SCTs found if it
3881 * contains an SCT X509 extension. They will be stored in |s->scts|.
3883 * - The number of SCTs extracted, assuming an OCSP response exists.
3884 * - 0 if no OCSP response exists or it contains no SCTs.
3885 * - A negative integer if an error occurs.
3887 static int ct_extract_ocsp_response_scts(SSL *s)
3889 #ifndef OPENSSL_NO_OCSP
3890 int scts_extracted = 0;
3891 const unsigned char *p;
3892 OCSP_BASICRESP *br = NULL;
3893 OCSP_RESPONSE *rsp = NULL;
3894 STACK_OF(SCT) *scts = NULL;
3897 if (s->tlsext_ocsp_resp == NULL || s->tlsext_ocsp_resplen == 0)
3900 p = s->tlsext_ocsp_resp;
3901 rsp = d2i_OCSP_RESPONSE(NULL, &p, s->tlsext_ocsp_resplen);
3905 br = OCSP_response_get1_basic(rsp);
3909 for (i = 0; i < OCSP_resp_count(br); ++i) {
3910 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
3915 scts = OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
3916 scts_extracted = ct_move_scts(&s->scts, scts,
3917 SCT_SOURCE_OCSP_STAPLED_RESPONSE);
3918 if (scts_extracted < 0)
3922 SCT_LIST_free(scts);
3923 OCSP_BASICRESP_free(br);
3924 OCSP_RESPONSE_free(rsp);
3925 return scts_extracted;
3927 /* Behave as if no OCSP response exists */
3933 * Attempts to extract SCTs from the peer certificate.
3934 * Return the number of SCTs extracted, or a negative integer if an error
3937 static int ct_extract_x509v3_extension_scts(SSL *s)
3939 int scts_extracted = 0;
3940 X509 *cert = s->session != NULL ? s->session->peer : NULL;
3943 STACK_OF(SCT) *scts =
3944 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
3947 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
3949 SCT_LIST_free(scts);
3952 return scts_extracted;
3956 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
3957 * response (if it exists) and X509v3 extensions in the certificate.
3958 * Returns NULL if an error occurs.
3960 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
3962 if (!s->scts_parsed) {
3963 if (ct_extract_tls_extension_scts(s) < 0 ||
3964 ct_extract_ocsp_response_scts(s) < 0 ||
3965 ct_extract_x509v3_extension_scts(s) < 0)
3975 static int ct_permissive(const CT_POLICY_EVAL_CTX *ctx,
3976 const STACK_OF(SCT) *scts, void *unused_arg)
3981 static int ct_strict(const CT_POLICY_EVAL_CTX *ctx,
3982 const STACK_OF(SCT) *scts, void *unused_arg)
3984 int count = scts != NULL ? sk_SCT_num(scts) : 0;
3987 for (i = 0; i < count; ++i) {
3988 SCT *sct = sk_SCT_value(scts, i);
3989 int status = SCT_get_validation_status(sct);
3991 if (status == SCT_VALIDATION_STATUS_VALID)
3994 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
3998 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4002 * Since code exists that uses the custom extension handler for CT, look
4003 * for this and throw an error if they have already registered to use CT.
4005 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4006 TLSEXT_TYPE_signed_certificate_timestamp)) {
4007 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4008 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4012 if (callback != NULL) {
4013 /* If we are validating CT, then we MUST accept SCTs served via OCSP */
4014 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4018 s->ct_validation_callback = callback;
4019 s->ct_validation_callback_arg = arg;
4024 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4025 ssl_ct_validation_cb callback,
4029 * Since code exists that uses the custom extension handler for CT, look for
4030 * this and throw an error if they have already registered to use CT.
4032 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4033 TLSEXT_TYPE_signed_certificate_timestamp)) {
4034 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4035 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4039 ctx->ct_validation_callback = callback;
4040 ctx->ct_validation_callback_arg = arg;
4044 int SSL_ct_is_enabled(const SSL *s)
4046 return s->ct_validation_callback != NULL;
4049 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4051 return ctx->ct_validation_callback != NULL;
4054 int ssl_validate_ct(SSL *s)
4057 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4059 SSL_DANE *dane = &s->dane;
4060 CT_POLICY_EVAL_CTX *ctx = NULL;
4061 const STACK_OF(SCT) *scts;
4064 * If no callback is set, the peer is anonymous, or its chain is invalid,
4065 * skip SCT validation - just return success. Applications that continue
4066 * handshakes without certificates, with unverified chains, or pinned leaf
4067 * certificates are outside the scope of the WebPKI and CT.
4069 * The above exclusions notwithstanding the vast majority of peers will
4070 * have rather ordinary certificate chains validated by typical
4071 * applications that perform certificate verification and therefore will
4072 * process SCTs when enabled.
4074 if (s->ct_validation_callback == NULL || cert == NULL ||
4075 s->verify_result != X509_V_OK ||
4076 s->verified_chain == NULL ||
4077 sk_X509_num(s->verified_chain) <= 1)
4081 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4082 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4084 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4085 switch (dane->mtlsa->usage) {
4086 case DANETLS_USAGE_DANE_TA:
4087 case DANETLS_USAGE_DANE_EE:
4092 ctx = CT_POLICY_EVAL_CTX_new();
4094 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4098 issuer = sk_X509_value(s->verified_chain, 1);
4099 CT_POLICY_EVAL_CTX_set0_cert(ctx, cert);
4100 CT_POLICY_EVAL_CTX_set0_issuer(ctx, issuer);
4101 CT_POLICY_EVAL_CTX_set0_log_store(ctx, s->ctx->ctlog_store);
4103 scts = SSL_get0_peer_scts(s);
4106 * This function returns success (> 0) only when all the SCTs are valid, 0
4107 * when some are invalid, and < 0 on various internal errors (out of
4108 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4109 * reason to abort the handshake, that decision is up to the callback.
4110 * Therefore, we error out only in the unexpected case that the return
4111 * value is negative.
4113 * XXX: One might well argue that the return value of this function is an
4114 * unforunate design choice. Its job is only to determine the validation
4115 * status of each of the provided SCTs. So long as it correctly separates
4116 * the wheat from the chaff it should return success. Failure in this case
4117 * ought to correspond to an inability to carry out its duties.
4119 if (SCT_LIST_validate(scts, ctx) < 0) {
4120 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4124 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4126 ret = 0; /* This function returns 0 on failure */
4129 CT_POLICY_EVAL_CTX_free(ctx);
4131 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4132 * failure return code here. Also the application may wish the complete
4133 * the handshake, and then disconnect cleanly at a higher layer, after
4134 * checking the verification status of the completed connection.
4136 * We therefore force a certificate verification failure which will be
4137 * visible via SSL_get_verify_result() and cached as part of any resumed
4140 * Note: the permissive callback is for information gathering only, always
4141 * returns success, and does not affect verification status. Only the
4142 * strict callback or a custom application-specified callback can trigger
4143 * connection failure or record a verification error.
4146 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4150 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4152 switch (validation_mode) {
4154 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4156 case SSL_CT_VALIDATION_PERMISSIVE:
4157 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4158 case SSL_CT_VALIDATION_STRICT:
4159 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4163 int SSL_enable_ct(SSL *s, int validation_mode)
4165 switch (validation_mode) {
4167 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4169 case SSL_CT_VALIDATION_PERMISSIVE:
4170 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4171 case SSL_CT_VALIDATION_STRICT:
4172 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4176 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4178 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4181 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4183 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4186 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE *logs)
4188 CTLOG_STORE_free(ctx->ctlog_store);
4189 ctx->ctlog_store = logs;
4192 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4194 return ctx->ctlog_store;