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 if (dctx->mdevp != NULL)
114 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
115 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
117 if (mdord == NULL || mdevp == NULL) {
120 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
124 /* Install default entries */
125 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
128 if (dane_mds[i].nid == NID_undef ||
129 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
131 mdevp[dane_mds[i].mtype] = md;
132 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
142 static void dane_ctx_final(struct dane_ctx_st *dctx)
144 OPENSSL_free(dctx->mdevp);
147 OPENSSL_free(dctx->mdord);
152 static void tlsa_free(danetls_record *t)
156 OPENSSL_free(t->data);
157 EVP_PKEY_free(t->spki);
161 static void dane_final(SSL_DANE *dane)
163 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
166 sk_X509_pop_free(dane->certs, X509_free);
169 X509_free(dane->mcert);
177 * dane_copy - Copy dane configuration, sans verification state.
179 static int ssl_dane_dup(SSL *to, SSL *from)
184 if (!DANETLS_ENABLED(&from->dane))
187 dane_final(&to->dane);
188 to->dane.flags = from->dane.flags;
189 to->dane.dctx = &to->ctx->dane;
190 to->dane.trecs = sk_danetls_record_new_null();
192 if (to->dane.trecs == NULL) {
193 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
197 num = sk_danetls_record_num(from->dane.trecs);
198 for (i = 0; i < num; ++i) {
199 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
201 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
202 t->data, t->dlen) <= 0)
208 static int dane_mtype_set(
209 struct dane_ctx_st *dctx,
216 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
217 SSLerr(SSL_F_DANE_MTYPE_SET,
218 SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
222 if (mtype > dctx->mdmax) {
223 const EVP_MD **mdevp;
225 int n = ((int) mtype) + 1;
227 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
229 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
234 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
236 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
241 /* Zero-fill any gaps */
242 for (i = dctx->mdmax+1; i < mtype; ++i) {
250 dctx->mdevp[mtype] = md;
251 /* Coerce ordinal of disabled matching types to 0 */
252 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
257 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
259 if (mtype > dane->dctx->mdmax)
261 return dane->dctx->mdevp[mtype];
264 static int dane_tlsa_add(
273 const EVP_MD *md = NULL;
274 int ilen = (int)dlen;
278 if (dane->trecs == NULL) {
279 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
283 if (ilen < 0 || dlen != (size_t)ilen) {
284 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
288 if (usage > DANETLS_USAGE_LAST) {
289 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
293 if (selector > DANETLS_SELECTOR_LAST) {
294 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
298 if (mtype != DANETLS_MATCHING_FULL) {
299 md = tlsa_md_get(dane, mtype);
301 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
306 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
307 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
311 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
315 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
316 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
321 t->selector = selector;
323 t->data = OPENSSL_malloc(ilen);
324 if (t->data == NULL) {
326 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
329 memcpy(t->data, data, ilen);
332 /* Validate and cache full certificate or public key */
333 if (mtype == DANETLS_MATCHING_FULL) {
334 const unsigned char *p = data;
336 EVP_PKEY *pkey = NULL;
339 case DANETLS_SELECTOR_CERT:
340 if (!d2i_X509(&cert, &p, dlen) || p < data ||
341 dlen != (size_t)(p - data)) {
343 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
346 if (X509_get0_pubkey(cert) == NULL) {
348 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
352 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
358 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
359 * records that contain full certificates of trust-anchors that are
360 * not present in the wire chain. For usage PKIX-TA(0), we augment
361 * the chain with untrusted Full(0) certificates from DNS, in case
362 * they are missing from the chain.
364 if ((dane->certs == NULL &&
365 (dane->certs = sk_X509_new_null()) == NULL) ||
366 !sk_X509_push(dane->certs, cert)) {
367 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
374 case DANETLS_SELECTOR_SPKI:
375 if (!d2i_PUBKEY(&pkey, &p, dlen) || p < data ||
376 dlen != (size_t)(p - data)) {
378 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
383 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
384 * records that contain full bare keys of trust-anchors that are
385 * not present in the wire chain.
387 if (usage == DANETLS_USAGE_DANE_TA)
396 * Find the right insertion point for the new record.
398 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
399 * they can be processed first, as they require no chain building, and no
400 * expiration or hostname checks. Because DANE-EE(3) is numerically
401 * largest, this is accomplished via descending sort by "usage".
403 * We also sort in descending order by matching ordinal to simplify
404 * the implementation of digest agility in the verification code.
406 * The choice of order for the selector is not significant, so we
407 * use the same descending order for consistency.
409 num = sk_danetls_record_num(dane->trecs);
410 for (i = 0; i < num; ++i) {
411 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
413 if (rec->usage > usage)
415 if (rec->usage < usage)
417 if (rec->selector > selector)
419 if (rec->selector < selector)
421 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
426 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
428 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
431 dane->umask |= DANETLS_USAGE_BIT(usage);
436 static void clear_ciphers(SSL *s)
438 /* clear the current cipher */
439 ssl_clear_cipher_ctx(s);
440 ssl_clear_hash_ctx(&s->read_hash);
441 ssl_clear_hash_ctx(&s->write_hash);
444 int SSL_clear(SSL *s)
446 if (s->method == NULL) {
447 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
451 if (ssl_clear_bad_session(s)) {
452 SSL_SESSION_free(s->session);
460 if (s->renegotiate) {
461 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
465 ossl_statem_clear(s);
467 s->version = s->method->version;
468 s->client_version = s->version;
469 s->rwstate = SSL_NOTHING;
471 BUF_MEM_free(s->init_buf);
476 /* Reset DANE verification result state */
479 X509_free(s->dane.mcert);
480 s->dane.mcert = NULL;
481 s->dane.mtlsa = NULL;
483 /* Clear the verification result peername */
484 X509_VERIFY_PARAM_move_peername(s->param, NULL);
487 * Check to see if we were changed into a different method, if so, revert
488 * back if we are not doing session-id reuse.
490 if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
491 && (s->method != s->ctx->method)) {
492 s->method->ssl_free(s);
493 s->method = s->ctx->method;
494 if (!s->method->ssl_new(s))
497 s->method->ssl_clear(s);
499 RECORD_LAYER_clear(&s->rlayer);
504 /** Used to change an SSL_CTXs default SSL method type */
505 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
507 STACK_OF(SSL_CIPHER) *sk;
511 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
512 &(ctx->cipher_list_by_id),
513 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
514 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
515 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
516 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
522 SSL *SSL_new(SSL_CTX *ctx)
527 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
530 if (ctx->method == NULL) {
531 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
535 s = OPENSSL_zalloc(sizeof(*s));
539 s->lock = CRYPTO_THREAD_lock_new();
540 if (s->lock == NULL) {
541 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
546 RECORD_LAYER_init(&s->rlayer, s);
548 s->options = ctx->options;
549 s->dane.flags = ctx->dane.flags;
550 s->min_proto_version = ctx->min_proto_version;
551 s->max_proto_version = ctx->max_proto_version;
553 s->max_cert_list = ctx->max_cert_list;
557 * Earlier library versions used to copy the pointer to the CERT, not
558 * its contents; only when setting new parameters for the per-SSL
559 * copy, ssl_cert_new would be called (and the direct reference to
560 * the per-SSL_CTX settings would be lost, but those still were
561 * indirectly accessed for various purposes, and for that reason they
562 * used to be known as s->ctx->default_cert). Now we don't look at the
563 * SSL_CTX's CERT after having duplicated it once.
565 s->cert = ssl_cert_dup(ctx->cert);
569 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
570 s->msg_callback = ctx->msg_callback;
571 s->msg_callback_arg = ctx->msg_callback_arg;
572 s->verify_mode = ctx->verify_mode;
573 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
574 s->sid_ctx_length = ctx->sid_ctx_length;
575 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
576 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
577 s->verify_callback = ctx->default_verify_callback;
578 s->generate_session_id = ctx->generate_session_id;
580 s->param = X509_VERIFY_PARAM_new();
581 if (s->param == NULL)
583 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
584 s->quiet_shutdown = ctx->quiet_shutdown;
585 s->max_send_fragment = ctx->max_send_fragment;
586 s->split_send_fragment = ctx->split_send_fragment;
587 s->max_pipelines = ctx->max_pipelines;
588 if (s->max_pipelines > 1)
589 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
590 if (ctx->default_read_buf_len > 0)
591 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
595 s->tlsext_debug_cb = 0;
596 s->tlsext_debug_arg = NULL;
597 s->tlsext_ticket_expected = 0;
598 s->tlsext_status_type = ctx->tlsext_status_type;
599 s->tlsext_status_expected = 0;
600 s->tlsext_ocsp_ids = NULL;
601 s->tlsext_ocsp_exts = NULL;
602 s->tlsext_ocsp_resp = NULL;
603 s->tlsext_ocsp_resplen = -1;
605 s->initial_ctx = ctx;
606 # ifndef OPENSSL_NO_EC
607 if (ctx->tlsext_ecpointformatlist) {
608 s->tlsext_ecpointformatlist =
609 OPENSSL_memdup(ctx->tlsext_ecpointformatlist,
610 ctx->tlsext_ecpointformatlist_length);
611 if (!s->tlsext_ecpointformatlist)
613 s->tlsext_ecpointformatlist_length =
614 ctx->tlsext_ecpointformatlist_length;
616 if (ctx->tlsext_ellipticcurvelist) {
617 s->tlsext_ellipticcurvelist =
618 OPENSSL_memdup(ctx->tlsext_ellipticcurvelist,
619 ctx->tlsext_ellipticcurvelist_length);
620 if (!s->tlsext_ellipticcurvelist)
622 s->tlsext_ellipticcurvelist_length =
623 ctx->tlsext_ellipticcurvelist_length;
626 # ifndef OPENSSL_NO_NEXTPROTONEG
627 s->next_proto_negotiated = NULL;
630 if (s->ctx->alpn_client_proto_list) {
631 s->alpn_client_proto_list =
632 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
633 if (s->alpn_client_proto_list == NULL)
635 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
636 s->ctx->alpn_client_proto_list_len);
637 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
640 s->verified_chain = NULL;
641 s->verify_result = X509_V_OK;
643 s->default_passwd_callback = ctx->default_passwd_callback;
644 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
646 s->method = ctx->method;
648 if (!s->method->ssl_new(s))
651 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
656 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
659 #ifndef OPENSSL_NO_PSK
660 s->psk_client_callback = ctx->psk_client_callback;
661 s->psk_server_callback = ctx->psk_server_callback;
666 #ifndef OPENSSL_NO_CT
667 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
668 ctx->ct_validation_callback_arg))
675 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
679 int SSL_is_dtls(const SSL *s)
681 return SSL_IS_DTLS(s) ? 1 : 0;
684 int SSL_up_ref(SSL *s)
688 if (CRYPTO_atomic_add(&s->references, 1, &i, s->lock) <= 0)
691 REF_PRINT_COUNT("SSL", s);
692 REF_ASSERT_ISNT(i < 2);
693 return ((i > 1) ? 1 : 0);
696 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
697 unsigned int sid_ctx_len)
699 if (sid_ctx_len > sizeof ctx->sid_ctx) {
700 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
701 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
704 ctx->sid_ctx_length = sid_ctx_len;
705 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
710 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
711 unsigned int sid_ctx_len)
713 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
714 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
715 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
718 ssl->sid_ctx_length = sid_ctx_len;
719 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
724 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
726 CRYPTO_THREAD_write_lock(ctx->lock);
727 ctx->generate_session_id = cb;
728 CRYPTO_THREAD_unlock(ctx->lock);
732 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
734 CRYPTO_THREAD_write_lock(ssl->lock);
735 ssl->generate_session_id = cb;
736 CRYPTO_THREAD_unlock(ssl->lock);
740 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
744 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
745 * we can "construct" a session to give us the desired check - ie. to
746 * find if there's a session in the hash table that would conflict with
747 * any new session built out of this id/id_len and the ssl_version in use
752 if (id_len > sizeof r.session_id)
755 r.ssl_version = ssl->version;
756 r.session_id_length = id_len;
757 memcpy(r.session_id, id, id_len);
759 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
760 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
761 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
765 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
767 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
770 int SSL_set_purpose(SSL *s, int purpose)
772 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
775 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
777 return X509_VERIFY_PARAM_set_trust(s->param, trust);
780 int SSL_set_trust(SSL *s, int trust)
782 return X509_VERIFY_PARAM_set_trust(s->param, trust);
785 int SSL_set1_host(SSL *s, const char *hostname)
787 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
790 int SSL_add1_host(SSL *s, const char *hostname)
792 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
795 void SSL_set_hostflags(SSL *s, unsigned int flags)
797 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
800 const char *SSL_get0_peername(SSL *s)
802 return X509_VERIFY_PARAM_get0_peername(s->param);
805 int SSL_CTX_dane_enable(SSL_CTX *ctx)
807 return dane_ctx_enable(&ctx->dane);
810 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
812 unsigned long orig = ctx->dane.flags;
814 ctx->dane.flags |= flags;
818 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
820 unsigned long orig = ctx->dane.flags;
822 ctx->dane.flags &= ~flags;
826 int SSL_dane_enable(SSL *s, const char *basedomain)
828 SSL_DANE *dane = &s->dane;
830 if (s->ctx->dane.mdmax == 0) {
831 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
834 if (dane->trecs != NULL) {
835 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
840 * Default SNI name. This rejects empty names, while set1_host below
841 * accepts them and disables host name checks. To avoid side-effects with
842 * invalid input, set the SNI name first.
844 if (s->tlsext_hostname == NULL) {
845 if (!SSL_set_tlsext_host_name(s, basedomain)) {
846 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
851 /* Primary RFC6125 reference identifier */
852 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
853 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
859 dane->dctx = &s->ctx->dane;
860 dane->trecs = sk_danetls_record_new_null();
862 if (dane->trecs == NULL) {
863 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
869 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
871 unsigned long orig = ssl->dane.flags;
873 ssl->dane.flags |= flags;
877 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
879 unsigned long orig = ssl->dane.flags;
881 ssl->dane.flags &= ~flags;
885 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
887 SSL_DANE *dane = &s->dane;
889 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
893 *mcert = dane->mcert;
895 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
900 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
901 uint8_t *mtype, unsigned const char **data, size_t *dlen)
903 SSL_DANE *dane = &s->dane;
905 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
909 *usage = dane->mtlsa->usage;
911 *selector = dane->mtlsa->selector;
913 *mtype = dane->mtlsa->mtype;
915 *data = dane->mtlsa->data;
917 *dlen = dane->mtlsa->dlen;
922 SSL_DANE *SSL_get0_dane(SSL *s)
927 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
928 uint8_t mtype, unsigned char *data, size_t dlen)
930 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
933 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype, uint8_t ord)
935 return dane_mtype_set(&ctx->dane, md, mtype, ord);
938 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
940 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
943 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
945 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
948 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
953 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
958 void SSL_certs_clear(SSL *s)
960 ssl_cert_clear_certs(s->cert);
963 void SSL_free(SSL *s)
970 CRYPTO_atomic_add(&s->references, -1, &i, s->lock);
971 REF_PRINT_COUNT("SSL", s);
974 REF_ASSERT_ISNT(i < 0);
976 X509_VERIFY_PARAM_free(s->param);
977 dane_final(&s->dane);
978 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
980 ssl_free_wbio_buffer(s);
982 if (s->wbio != s->rbio)
983 BIO_free_all(s->wbio);
984 BIO_free_all(s->rbio);
986 BUF_MEM_free(s->init_buf);
988 /* add extra stuff */
989 sk_SSL_CIPHER_free(s->cipher_list);
990 sk_SSL_CIPHER_free(s->cipher_list_by_id);
992 /* Make the next call work :-) */
993 if (s->session != NULL) {
994 ssl_clear_bad_session(s);
995 SSL_SESSION_free(s->session);
1000 ssl_cert_free(s->cert);
1001 /* Free up if allocated */
1003 OPENSSL_free(s->tlsext_hostname);
1004 SSL_CTX_free(s->initial_ctx);
1005 #ifndef OPENSSL_NO_EC
1006 OPENSSL_free(s->tlsext_ecpointformatlist);
1007 OPENSSL_free(s->tlsext_ellipticcurvelist);
1008 #endif /* OPENSSL_NO_EC */
1009 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
1010 #ifndef OPENSSL_NO_OCSP
1011 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
1013 #ifndef OPENSSL_NO_CT
1014 SCT_LIST_free(s->scts);
1015 OPENSSL_free(s->tlsext_scts);
1017 OPENSSL_free(s->tlsext_ocsp_resp);
1018 OPENSSL_free(s->alpn_client_proto_list);
1020 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
1022 sk_X509_pop_free(s->verified_chain, X509_free);
1024 if (s->method != NULL)
1025 s->method->ssl_free(s);
1027 RECORD_LAYER_release(&s->rlayer);
1029 SSL_CTX_free(s->ctx);
1031 ASYNC_WAIT_CTX_free(s->waitctx);
1033 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1034 OPENSSL_free(s->next_proto_negotiated);
1037 #ifndef OPENSSL_NO_SRTP
1038 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1041 CRYPTO_THREAD_lock_free(s->lock);
1046 void SSL_set_rbio(SSL *s, BIO *rbio)
1048 if (s->rbio != rbio)
1049 BIO_free_all(s->rbio);
1053 void SSL_set_wbio(SSL *s, BIO *wbio)
1056 * If the output buffering BIO is still in place, remove it
1058 if (s->bbio != NULL)
1059 s->wbio = BIO_pop(s->wbio);
1061 if (s->wbio != wbio && s->rbio != s->wbio)
1062 BIO_free_all(s->wbio);
1065 /* Re-attach |bbio| to the new |wbio|. */
1066 if (s->bbio != NULL)
1067 s->wbio = BIO_push(s->bbio, s->wbio);
1070 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1072 SSL_set_wbio(s, wbio);
1073 SSL_set_rbio(s, rbio);
1076 BIO *SSL_get_rbio(const SSL *s)
1081 BIO *SSL_get_wbio(const SSL *s)
1083 if (s->bbio != NULL) {
1085 * If |bbio| is active, the true caller-configured BIO is its
1088 return BIO_next(s->bbio);
1093 int SSL_get_fd(const SSL *s)
1095 return SSL_get_rfd(s);
1098 int SSL_get_rfd(const SSL *s)
1103 b = SSL_get_rbio(s);
1104 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1106 BIO_get_fd(r, &ret);
1110 int SSL_get_wfd(const SSL *s)
1115 b = SSL_get_wbio(s);
1116 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1118 BIO_get_fd(r, &ret);
1122 #ifndef OPENSSL_NO_SOCK
1123 int SSL_set_fd(SSL *s, int fd)
1128 bio = BIO_new(BIO_s_socket());
1131 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1134 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1135 SSL_set_bio(s, bio, bio);
1141 int SSL_set_wfd(SSL *s, int fd)
1143 BIO *rbio = SSL_get_rbio(s);
1145 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1146 || (int)BIO_get_fd(rbio, NULL) != fd) {
1147 BIO *bio = BIO_new(BIO_s_socket());
1150 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1153 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1154 SSL_set_wbio(s, bio);
1156 SSL_set_wbio(s, rbio);
1161 int SSL_set_rfd(SSL *s, int fd)
1163 BIO *wbio = SSL_get_wbio(s);
1165 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1166 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1167 BIO *bio = BIO_new(BIO_s_socket());
1170 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1173 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1174 SSL_set_rbio(s, bio);
1176 SSL_set_rbio(s, wbio);
1183 /* return length of latest Finished message we sent, copy to 'buf' */
1184 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1188 if (s->s3 != NULL) {
1189 ret = s->s3->tmp.finish_md_len;
1192 memcpy(buf, s->s3->tmp.finish_md, count);
1197 /* return length of latest Finished message we expected, copy to 'buf' */
1198 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1202 if (s->s3 != NULL) {
1203 ret = s->s3->tmp.peer_finish_md_len;
1206 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1211 int SSL_get_verify_mode(const SSL *s)
1213 return (s->verify_mode);
1216 int SSL_get_verify_depth(const SSL *s)
1218 return X509_VERIFY_PARAM_get_depth(s->param);
1221 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1222 return (s->verify_callback);
1225 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1227 return (ctx->verify_mode);
1230 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1232 return X509_VERIFY_PARAM_get_depth(ctx->param);
1235 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1236 return (ctx->default_verify_callback);
1239 void SSL_set_verify(SSL *s, int mode,
1240 int (*callback) (int ok, X509_STORE_CTX *ctx))
1242 s->verify_mode = mode;
1243 if (callback != NULL)
1244 s->verify_callback = callback;
1247 void SSL_set_verify_depth(SSL *s, int depth)
1249 X509_VERIFY_PARAM_set_depth(s->param, depth);
1252 void SSL_set_read_ahead(SSL *s, int yes)
1254 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1257 int SSL_get_read_ahead(const SSL *s)
1259 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1262 int SSL_pending(const SSL *s)
1265 * SSL_pending cannot work properly if read-ahead is enabled
1266 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1267 * impossible to fix since SSL_pending cannot report errors that may be
1268 * observed while scanning the new data. (Note that SSL_pending() is
1269 * often used as a boolean value, so we'd better not return -1.)
1271 return (s->method->ssl_pending(s));
1274 int SSL_has_pending(const SSL *s)
1277 * Similar to SSL_pending() but returns a 1 to indicate that we have
1278 * unprocessed data available or 0 otherwise (as opposed to the number of
1279 * bytes available). Unlike SSL_pending() this will take into account
1280 * read_ahead data. A 1 return simply indicates that we have unprocessed
1281 * data. That data may not result in any application data, or we may fail
1282 * to parse the records for some reason.
1287 return RECORD_LAYER_read_pending(&s->rlayer);
1290 X509 *SSL_get_peer_certificate(const SSL *s)
1294 if ((s == NULL) || (s->session == NULL))
1297 r = s->session->peer;
1307 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1311 if ((s == NULL) || (s->session == NULL))
1314 r = s->session->peer_chain;
1317 * If we are a client, cert_chain includes the peer's own certificate; if
1318 * we are a server, it does not.
1325 * Now in theory, since the calling process own 't' it should be safe to
1326 * modify. We need to be able to read f without being hassled
1328 int SSL_copy_session_id(SSL *t, const SSL *f)
1331 /* Do we need to to SSL locking? */
1332 if (!SSL_set_session(t, SSL_get_session(f))) {
1337 * what if we are setup for one protocol version but want to talk another
1339 if (t->method != f->method) {
1340 t->method->ssl_free(t);
1341 t->method = f->method;
1342 if (t->method->ssl_new(t) == 0)
1346 CRYPTO_atomic_add(&f->cert->references, 1, &i, f->cert->lock);
1347 ssl_cert_free(t->cert);
1349 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
1356 /* Fix this so it checks all the valid key/cert options */
1357 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1359 if ((ctx == NULL) ||
1360 (ctx->cert->key->x509 == NULL)) {
1361 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1362 SSL_R_NO_CERTIFICATE_ASSIGNED);
1365 if (ctx->cert->key->privatekey == NULL) {
1366 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1367 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1370 return (X509_check_private_key
1371 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1374 /* Fix this function so that it takes an optional type parameter */
1375 int SSL_check_private_key(const SSL *ssl)
1378 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1381 if (ssl->cert->key->x509 == NULL) {
1382 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1385 if (ssl->cert->key->privatekey == NULL) {
1386 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1389 return (X509_check_private_key(ssl->cert->key->x509,
1390 ssl->cert->key->privatekey));
1393 int SSL_waiting_for_async(SSL *s)
1401 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1403 ASYNC_WAIT_CTX *ctx = s->waitctx;
1407 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1410 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1411 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1413 ASYNC_WAIT_CTX *ctx = s->waitctx;
1417 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1421 int SSL_accept(SSL *s)
1423 if (s->handshake_func == NULL) {
1424 /* Not properly initialized yet */
1425 SSL_set_accept_state(s);
1428 return SSL_do_handshake(s);
1431 int SSL_connect(SSL *s)
1433 if (s->handshake_func == NULL) {
1434 /* Not properly initialized yet */
1435 SSL_set_connect_state(s);
1438 return SSL_do_handshake(s);
1441 long SSL_get_default_timeout(const SSL *s)
1443 return (s->method->get_timeout());
1446 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1447 int (*func)(void *)) {
1449 if (s->waitctx == NULL) {
1450 s->waitctx = ASYNC_WAIT_CTX_new();
1451 if (s->waitctx == NULL)
1454 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1455 sizeof(struct ssl_async_args))) {
1457 s->rwstate = SSL_NOTHING;
1458 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1461 s->rwstate = SSL_ASYNC_PAUSED;
1464 s->rwstate = SSL_ASYNC_NO_JOBS;
1470 s->rwstate = SSL_NOTHING;
1471 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1472 /* Shouldn't happen */
1477 static int ssl_io_intern(void *vargs)
1479 struct ssl_async_args *args;
1484 args = (struct ssl_async_args *)vargs;
1488 switch (args->type) {
1490 return args->f.func_read(s, buf, num);
1492 return args->f.func_write(s, buf, num);
1494 return args->f.func_other(s);
1499 int SSL_read(SSL *s, void *buf, int num)
1501 if (s->handshake_func == NULL) {
1502 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1506 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1507 s->rwstate = SSL_NOTHING;
1511 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1512 struct ssl_async_args args;
1517 args.type = READFUNC;
1518 args.f.func_read = s->method->ssl_read;
1520 return ssl_start_async_job(s, &args, ssl_io_intern);
1522 return s->method->ssl_read(s, buf, num);
1526 int SSL_peek(SSL *s, void *buf, int num)
1528 if (s->handshake_func == NULL) {
1529 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1533 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1536 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1537 struct ssl_async_args args;
1542 args.type = READFUNC;
1543 args.f.func_read = s->method->ssl_peek;
1545 return ssl_start_async_job(s, &args, ssl_io_intern);
1547 return s->method->ssl_peek(s, buf, num);
1551 int SSL_write(SSL *s, const void *buf, int num)
1553 if (s->handshake_func == NULL) {
1554 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1558 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1559 s->rwstate = SSL_NOTHING;
1560 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1564 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1565 struct ssl_async_args args;
1568 args.buf = (void *)buf;
1570 args.type = WRITEFUNC;
1571 args.f.func_write = s->method->ssl_write;
1573 return ssl_start_async_job(s, &args, ssl_io_intern);
1575 return s->method->ssl_write(s, buf, num);
1579 int SSL_shutdown(SSL *s)
1582 * Note that this function behaves differently from what one might
1583 * expect. Return values are 0 for no success (yet), 1 for success; but
1584 * calling it once is usually not enough, even if blocking I/O is used
1585 * (see ssl3_shutdown).
1588 if (s->handshake_func == NULL) {
1589 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1593 if (!SSL_in_init(s)) {
1594 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1595 struct ssl_async_args args;
1598 args.type = OTHERFUNC;
1599 args.f.func_other = s->method->ssl_shutdown;
1601 return ssl_start_async_job(s, &args, ssl_io_intern);
1603 return s->method->ssl_shutdown(s);
1606 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1611 int SSL_renegotiate(SSL *s)
1613 if (s->renegotiate == 0)
1618 return (s->method->ssl_renegotiate(s));
1621 int SSL_renegotiate_abbreviated(SSL *s)
1623 if (s->renegotiate == 0)
1628 return (s->method->ssl_renegotiate(s));
1631 int SSL_renegotiate_pending(SSL *s)
1634 * becomes true when negotiation is requested; false again once a
1635 * handshake has finished
1637 return (s->renegotiate != 0);
1640 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1645 case SSL_CTRL_GET_READ_AHEAD:
1646 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1647 case SSL_CTRL_SET_READ_AHEAD:
1648 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1649 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1652 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1653 s->msg_callback_arg = parg;
1657 return (s->mode |= larg);
1658 case SSL_CTRL_CLEAR_MODE:
1659 return (s->mode &= ~larg);
1660 case SSL_CTRL_GET_MAX_CERT_LIST:
1661 return (s->max_cert_list);
1662 case SSL_CTRL_SET_MAX_CERT_LIST:
1663 l = s->max_cert_list;
1664 s->max_cert_list = larg;
1666 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1667 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1669 s->max_send_fragment = larg;
1670 if (s->max_send_fragment < s->split_send_fragment)
1671 s->split_send_fragment = s->max_send_fragment;
1673 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1674 if ((unsigned int)larg > s->max_send_fragment || larg == 0)
1676 s->split_send_fragment = larg;
1678 case SSL_CTRL_SET_MAX_PIPELINES:
1679 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1681 s->max_pipelines = larg;
1683 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
1685 case SSL_CTRL_GET_RI_SUPPORT:
1687 return s->s3->send_connection_binding;
1690 case SSL_CTRL_CERT_FLAGS:
1691 return (s->cert->cert_flags |= larg);
1692 case SSL_CTRL_CLEAR_CERT_FLAGS:
1693 return (s->cert->cert_flags &= ~larg);
1695 case SSL_CTRL_GET_RAW_CIPHERLIST:
1697 if (s->s3->tmp.ciphers_raw == NULL)
1699 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1700 return (int)s->s3->tmp.ciphers_rawlen;
1702 return TLS_CIPHER_LEN;
1704 case SSL_CTRL_GET_EXTMS_SUPPORT:
1705 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1707 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1711 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1712 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1713 &s->min_proto_version);
1714 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1715 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1716 &s->max_proto_version);
1718 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1722 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1725 case SSL_CTRL_SET_MSG_CALLBACK:
1726 s->msg_callback = (void (*)
1727 (int write_p, int version, int content_type,
1728 const void *buf, size_t len, SSL *ssl,
1733 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1737 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1739 return ctx->sessions;
1742 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1745 /* For some cases with ctx == NULL perform syntax checks */
1748 #ifndef OPENSSL_NO_EC
1749 case SSL_CTRL_SET_CURVES_LIST:
1750 return tls1_set_curves_list(NULL, NULL, parg);
1752 case SSL_CTRL_SET_SIGALGS_LIST:
1753 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1754 return tls1_set_sigalgs_list(NULL, parg, 0);
1761 case SSL_CTRL_GET_READ_AHEAD:
1762 return (ctx->read_ahead);
1763 case SSL_CTRL_SET_READ_AHEAD:
1764 l = ctx->read_ahead;
1765 ctx->read_ahead = larg;
1768 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1769 ctx->msg_callback_arg = parg;
1772 case SSL_CTRL_GET_MAX_CERT_LIST:
1773 return (ctx->max_cert_list);
1774 case SSL_CTRL_SET_MAX_CERT_LIST:
1775 l = ctx->max_cert_list;
1776 ctx->max_cert_list = larg;
1779 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1780 l = ctx->session_cache_size;
1781 ctx->session_cache_size = larg;
1783 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1784 return (ctx->session_cache_size);
1785 case SSL_CTRL_SET_SESS_CACHE_MODE:
1786 l = ctx->session_cache_mode;
1787 ctx->session_cache_mode = larg;
1789 case SSL_CTRL_GET_SESS_CACHE_MODE:
1790 return (ctx->session_cache_mode);
1792 case SSL_CTRL_SESS_NUMBER:
1793 return (lh_SSL_SESSION_num_items(ctx->sessions));
1794 case SSL_CTRL_SESS_CONNECT:
1795 return (ctx->stats.sess_connect);
1796 case SSL_CTRL_SESS_CONNECT_GOOD:
1797 return (ctx->stats.sess_connect_good);
1798 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1799 return (ctx->stats.sess_connect_renegotiate);
1800 case SSL_CTRL_SESS_ACCEPT:
1801 return (ctx->stats.sess_accept);
1802 case SSL_CTRL_SESS_ACCEPT_GOOD:
1803 return (ctx->stats.sess_accept_good);
1804 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1805 return (ctx->stats.sess_accept_renegotiate);
1806 case SSL_CTRL_SESS_HIT:
1807 return (ctx->stats.sess_hit);
1808 case SSL_CTRL_SESS_CB_HIT:
1809 return (ctx->stats.sess_cb_hit);
1810 case SSL_CTRL_SESS_MISSES:
1811 return (ctx->stats.sess_miss);
1812 case SSL_CTRL_SESS_TIMEOUTS:
1813 return (ctx->stats.sess_timeout);
1814 case SSL_CTRL_SESS_CACHE_FULL:
1815 return (ctx->stats.sess_cache_full);
1817 return (ctx->mode |= larg);
1818 case SSL_CTRL_CLEAR_MODE:
1819 return (ctx->mode &= ~larg);
1820 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1821 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1823 ctx->max_send_fragment = larg;
1824 if (ctx->max_send_fragment < ctx->split_send_fragment)
1825 ctx->split_send_fragment = ctx->max_send_fragment;
1827 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1828 if ((unsigned int)larg > ctx->max_send_fragment || larg == 0)
1830 ctx->split_send_fragment = larg;
1832 case SSL_CTRL_SET_MAX_PIPELINES:
1833 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1835 ctx->max_pipelines = larg;
1837 case SSL_CTRL_CERT_FLAGS:
1838 return (ctx->cert->cert_flags |= larg);
1839 case SSL_CTRL_CLEAR_CERT_FLAGS:
1840 return (ctx->cert->cert_flags &= ~larg);
1841 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1842 return ssl_set_version_bound(ctx->method->version, (int)larg,
1843 &ctx->min_proto_version);
1844 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1845 return ssl_set_version_bound(ctx->method->version, (int)larg,
1846 &ctx->max_proto_version);
1848 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1852 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1855 case SSL_CTRL_SET_MSG_CALLBACK:
1856 ctx->msg_callback = (void (*)
1857 (int write_p, int version, int content_type,
1858 const void *buf, size_t len, SSL *ssl,
1863 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1867 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1876 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1877 const SSL_CIPHER *const *bp)
1879 if ((*ap)->id > (*bp)->id)
1881 if ((*ap)->id < (*bp)->id)
1886 /** return a STACK of the ciphers available for the SSL and in order of
1888 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1891 if (s->cipher_list != NULL) {
1892 return (s->cipher_list);
1893 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1894 return (s->ctx->cipher_list);
1900 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
1902 if ((s == NULL) || (s->session == NULL) || !s->server)
1904 return s->session->ciphers;
1907 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1909 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1911 ciphers = SSL_get_ciphers(s);
1914 ssl_set_client_disabled(s);
1915 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1916 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1917 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1919 sk = sk_SSL_CIPHER_new_null();
1922 if (!sk_SSL_CIPHER_push(sk, c)) {
1923 sk_SSL_CIPHER_free(sk);
1931 /** return a STACK of the ciphers available for the SSL and in order of
1933 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1936 if (s->cipher_list_by_id != NULL) {
1937 return (s->cipher_list_by_id);
1938 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1939 return (s->ctx->cipher_list_by_id);
1945 /** The old interface to get the same thing as SSL_get_ciphers() */
1946 const char *SSL_get_cipher_list(const SSL *s, int n)
1948 const SSL_CIPHER *c;
1949 STACK_OF(SSL_CIPHER) *sk;
1953 sk = SSL_get_ciphers(s);
1954 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1956 c = sk_SSL_CIPHER_value(sk, n);
1962 /** return a STACK of the ciphers available for the SSL_CTX and in order of
1964 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
1967 return ctx->cipher_list;
1971 /** specify the ciphers to be used by default by the SSL_CTX */
1972 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1974 STACK_OF(SSL_CIPHER) *sk;
1976 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1977 &ctx->cipher_list_by_id, str, ctx->cert);
1979 * ssl_create_cipher_list may return an empty stack if it was unable to
1980 * find a cipher matching the given rule string (for example if the rule
1981 * string specifies a cipher which has been disabled). This is not an
1982 * error as far as ssl_create_cipher_list is concerned, and hence
1983 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1987 else if (sk_SSL_CIPHER_num(sk) == 0) {
1988 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1994 /** specify the ciphers to be used by the SSL */
1995 int SSL_set_cipher_list(SSL *s, const char *str)
1997 STACK_OF(SSL_CIPHER) *sk;
1999 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2000 &s->cipher_list_by_id, str, s->cert);
2001 /* see comment in SSL_CTX_set_cipher_list */
2004 else if (sk_SSL_CIPHER_num(sk) == 0) {
2005 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2011 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2014 STACK_OF(SSL_CIPHER) *sk;
2015 const SSL_CIPHER *c;
2018 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2022 sk = s->session->ciphers;
2024 if (sk_SSL_CIPHER_num(sk) == 0)
2027 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2030 c = sk_SSL_CIPHER_value(sk, i);
2031 n = strlen(c->name);
2038 memcpy(p, c->name, n + 1);
2047 /** return a servername extension value if provided in Client Hello, or NULL.
2048 * So far, only host_name types are defined (RFC 3546).
2051 const char *SSL_get_servername(const SSL *s, const int type)
2053 if (type != TLSEXT_NAMETYPE_host_name)
2056 return s->session && !s->tlsext_hostname ?
2057 s->session->tlsext_hostname : s->tlsext_hostname;
2060 int SSL_get_servername_type(const SSL *s)
2063 && (!s->tlsext_hostname ? s->session->
2064 tlsext_hostname : s->tlsext_hostname))
2065 return TLSEXT_NAMETYPE_host_name;
2070 * SSL_select_next_proto implements the standard protocol selection. It is
2071 * expected that this function is called from the callback set by
2072 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2073 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2074 * not included in the length. A byte string of length 0 is invalid. No byte
2075 * string may be truncated. The current, but experimental algorithm for
2076 * selecting the protocol is: 1) If the server doesn't support NPN then this
2077 * is indicated to the callback. In this case, the client application has to
2078 * abort the connection or have a default application level protocol. 2) If
2079 * the server supports NPN, but advertises an empty list then the client
2080 * selects the first protocol in its list, but indicates via the API that this
2081 * fallback case was enacted. 3) Otherwise, the client finds the first
2082 * protocol in the server's list that it supports and selects this protocol.
2083 * This is because it's assumed that the server has better information about
2084 * which protocol a client should use. 4) If the client doesn't support any
2085 * of the server's advertised protocols, then this is treated the same as
2086 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2087 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2089 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2090 const unsigned char *server,
2091 unsigned int server_len,
2092 const unsigned char *client,
2093 unsigned int client_len)
2096 const unsigned char *result;
2097 int status = OPENSSL_NPN_UNSUPPORTED;
2100 * For each protocol in server preference order, see if we support it.
2102 for (i = 0; i < server_len;) {
2103 for (j = 0; j < client_len;) {
2104 if (server[i] == client[j] &&
2105 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2106 /* We found a match */
2107 result = &server[i];
2108 status = OPENSSL_NPN_NEGOTIATED;
2118 /* There's no overlap between our protocols and the server's list. */
2120 status = OPENSSL_NPN_NO_OVERLAP;
2123 *out = (unsigned char *)result + 1;
2124 *outlen = result[0];
2128 #ifndef OPENSSL_NO_NEXTPROTONEG
2130 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2131 * client's requested protocol for this connection and returns 0. If the
2132 * client didn't request any protocol, then *data is set to NULL. Note that
2133 * the client can request any protocol it chooses. The value returned from
2134 * this function need not be a member of the list of supported protocols
2135 * provided by the callback.
2137 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2140 *data = s->next_proto_negotiated;
2144 *len = s->next_proto_negotiated_len;
2149 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
2150 * a TLS server needs a list of supported protocols for Next Protocol
2151 * Negotiation. The returned list must be in wire format. The list is
2152 * returned by setting |out| to point to it and |outlen| to its length. This
2153 * memory will not be modified, but one should assume that the SSL* keeps a
2154 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2155 * wishes to advertise. Otherwise, no such extension will be included in the
2158 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
2159 int (*cb) (SSL *ssl,
2162 unsigned int *outlen,
2163 void *arg), void *arg)
2165 ctx->next_protos_advertised_cb = cb;
2166 ctx->next_protos_advertised_cb_arg = arg;
2170 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2171 * client needs to select a protocol from the server's provided list. |out|
2172 * must be set to point to the selected protocol (which may be within |in|).
2173 * The length of the protocol name must be written into |outlen|. The
2174 * server's advertised protocols are provided in |in| and |inlen|. The
2175 * callback can assume that |in| is syntactically valid. The client must
2176 * select a protocol. It is fatal to the connection if this callback returns
2177 * a value other than SSL_TLSEXT_ERR_OK.
2179 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
2180 int (*cb) (SSL *s, unsigned char **out,
2181 unsigned char *outlen,
2182 const unsigned char *in,
2184 void *arg), void *arg)
2186 ctx->next_proto_select_cb = cb;
2187 ctx->next_proto_select_cb_arg = arg;
2192 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2193 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2194 * length-prefixed strings). Returns 0 on success.
2196 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2197 unsigned int protos_len)
2199 OPENSSL_free(ctx->alpn_client_proto_list);
2200 ctx->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2201 if (ctx->alpn_client_proto_list == NULL) {
2202 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2205 ctx->alpn_client_proto_list_len = protos_len;
2211 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2212 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2213 * length-prefixed strings). Returns 0 on success.
2215 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2216 unsigned int protos_len)
2218 OPENSSL_free(ssl->alpn_client_proto_list);
2219 ssl->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2220 if (ssl->alpn_client_proto_list == NULL) {
2221 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2224 ssl->alpn_client_proto_list_len = protos_len;
2230 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2231 * called during ClientHello processing in order to select an ALPN protocol
2232 * from the client's list of offered protocols.
2234 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2235 int (*cb) (SSL *ssl,
2236 const unsigned char **out,
2237 unsigned char *outlen,
2238 const unsigned char *in,
2240 void *arg), void *arg)
2242 ctx->alpn_select_cb = cb;
2243 ctx->alpn_select_cb_arg = arg;
2247 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2248 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2249 * (not including the leading length-prefix byte). If the server didn't
2250 * respond with a negotiated protocol then |*len| will be zero.
2252 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2257 *data = ssl->s3->alpn_selected;
2261 *len = ssl->s3->alpn_selected_len;
2265 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2266 const char *label, size_t llen,
2267 const unsigned char *p, size_t plen,
2270 if (s->version < TLS1_VERSION)
2273 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2278 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2283 ((unsigned int)a->session_id[0]) |
2284 ((unsigned int)a->session_id[1] << 8L) |
2285 ((unsigned long)a->session_id[2] << 16L) |
2286 ((unsigned long)a->session_id[3] << 24L);
2291 * NB: If this function (or indeed the hash function which uses a sort of
2292 * coarser function than this one) is changed, ensure
2293 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2294 * being able to construct an SSL_SESSION that will collide with any existing
2295 * session with a matching session ID.
2297 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2299 if (a->ssl_version != b->ssl_version)
2301 if (a->session_id_length != b->session_id_length)
2303 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2307 * These wrapper functions should remain rather than redeclaring
2308 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2309 * variable. The reason is that the functions aren't static, they're exposed
2313 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2315 SSL_CTX *ret = NULL;
2318 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2322 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2325 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
2326 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE);
2330 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2331 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2334 ret = OPENSSL_zalloc(sizeof(*ret));
2339 ret->min_proto_version = 0;
2340 ret->max_proto_version = 0;
2341 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2342 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2343 /* We take the system default. */
2344 ret->session_timeout = meth->get_timeout();
2345 ret->references = 1;
2346 ret->lock = CRYPTO_THREAD_lock_new();
2347 if (ret->lock == NULL) {
2348 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2352 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2353 ret->verify_mode = SSL_VERIFY_NONE;
2354 if ((ret->cert = ssl_cert_new()) == NULL)
2357 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2358 if (ret->sessions == NULL)
2360 ret->cert_store = X509_STORE_new();
2361 if (ret->cert_store == NULL)
2363 #ifndef OPENSSL_NO_CT
2364 ret->ctlog_store = CTLOG_STORE_new();
2365 if (ret->ctlog_store == NULL)
2368 if (!ssl_create_cipher_list(ret->method,
2369 &ret->cipher_list, &ret->cipher_list_by_id,
2370 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2371 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2372 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2376 ret->param = X509_VERIFY_PARAM_new();
2377 if (ret->param == NULL)
2380 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2381 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2384 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2385 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2389 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
2392 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2395 /* No compression for DTLS */
2396 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2397 ret->comp_methods = SSL_COMP_get_compression_methods();
2399 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2400 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2402 /* Setup RFC5077 ticket keys */
2403 if ((RAND_bytes(ret->tlsext_tick_key_name, sizeof(ret->tlsext_tick_key_name)) <= 0)
2404 || (RAND_bytes(ret->tlsext_tick_hmac_key, sizeof(ret->tlsext_tick_hmac_key)) <= 0)
2405 || (RAND_bytes(ret->tlsext_tick_aes_key, sizeof(ret->tlsext_tick_aes_key)) <= 0))
2406 ret->options |= SSL_OP_NO_TICKET;
2408 #ifndef OPENSSL_NO_SRP
2409 if (!SSL_CTX_SRP_CTX_init(ret))
2412 #ifndef OPENSSL_NO_ENGINE
2413 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2414 # define eng_strx(x) #x
2415 # define eng_str(x) eng_strx(x)
2416 /* Use specific client engine automatically... ignore errors */
2419 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2422 ENGINE_load_builtin_engines();
2423 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2425 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2431 * Default is to connect to non-RI servers. When RI is more widely
2432 * deployed might change this.
2434 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2436 * Disable compression by default to prevent CRIME. Applications can
2437 * re-enable compression by configuring
2438 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2439 * or by using the SSL_CONF library.
2441 ret->options |= SSL_OP_NO_COMPRESSION;
2443 ret->tlsext_status_type = -1;
2447 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2453 int SSL_CTX_up_ref(SSL_CTX *ctx)
2457 if (CRYPTO_atomic_add(&ctx->references, 1, &i, ctx->lock) <= 0)
2460 REF_PRINT_COUNT("SSL_CTX", ctx);
2461 REF_ASSERT_ISNT(i < 2);
2462 return ((i > 1) ? 1 : 0);
2465 void SSL_CTX_free(SSL_CTX *a)
2472 CRYPTO_atomic_add(&a->references, -1, &i, a->lock);
2473 REF_PRINT_COUNT("SSL_CTX", a);
2476 REF_ASSERT_ISNT(i < 0);
2478 X509_VERIFY_PARAM_free(a->param);
2479 dane_ctx_final(&a->dane);
2482 * Free internal session cache. However: the remove_cb() may reference
2483 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2484 * after the sessions were flushed.
2485 * As the ex_data handling routines might also touch the session cache,
2486 * the most secure solution seems to be: empty (flush) the cache, then
2487 * free ex_data, then finally free the cache.
2488 * (See ticket [openssl.org #212].)
2490 if (a->sessions != NULL)
2491 SSL_CTX_flush_sessions(a, 0);
2493 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2494 lh_SSL_SESSION_free(a->sessions);
2495 X509_STORE_free(a->cert_store);
2496 #ifndef OPENSSL_NO_CT
2497 CTLOG_STORE_free(a->ctlog_store);
2499 sk_SSL_CIPHER_free(a->cipher_list);
2500 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2501 ssl_cert_free(a->cert);
2502 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2503 sk_X509_pop_free(a->extra_certs, X509_free);
2504 a->comp_methods = NULL;
2505 #ifndef OPENSSL_NO_SRTP
2506 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2508 #ifndef OPENSSL_NO_SRP
2509 SSL_CTX_SRP_CTX_free(a);
2511 #ifndef OPENSSL_NO_ENGINE
2512 ENGINE_finish(a->client_cert_engine);
2515 #ifndef OPENSSL_NO_EC
2516 OPENSSL_free(a->tlsext_ecpointformatlist);
2517 OPENSSL_free(a->tlsext_ellipticcurvelist);
2519 OPENSSL_free(a->alpn_client_proto_list);
2521 CRYPTO_THREAD_lock_free(a->lock);
2526 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2528 ctx->default_passwd_callback = cb;
2531 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2533 ctx->default_passwd_callback_userdata = u;
2536 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2538 return ctx->default_passwd_callback;
2541 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2543 return ctx->default_passwd_callback_userdata;
2546 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2548 s->default_passwd_callback = cb;
2551 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2553 s->default_passwd_callback_userdata = u;
2556 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2558 return s->default_passwd_callback;
2561 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2563 return s->default_passwd_callback_userdata;
2566 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2567 int (*cb) (X509_STORE_CTX *, void *),
2570 ctx->app_verify_callback = cb;
2571 ctx->app_verify_arg = arg;
2574 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2575 int (*cb) (int, X509_STORE_CTX *))
2577 ctx->verify_mode = mode;
2578 ctx->default_verify_callback = cb;
2581 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2583 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2586 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2589 ssl_cert_set_cert_cb(c->cert, cb, arg);
2592 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2594 ssl_cert_set_cert_cb(s->cert, cb, arg);
2597 void ssl_set_masks(SSL *s)
2599 #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST)
2603 uint32_t *pvalid = s->s3->tmp.valid_flags;
2604 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
2605 unsigned long mask_k, mask_a;
2606 #ifndef OPENSSL_NO_EC
2607 int have_ecc_cert, ecdsa_ok;
2613 #ifndef OPENSSL_NO_DH
2614 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2619 rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
2620 rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
2621 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
2622 #ifndef OPENSSL_NO_EC
2623 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2629 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
2630 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
2633 #ifndef OPENSSL_NO_GOST
2634 cpk = &(c->pkeys[SSL_PKEY_GOST12_512]);
2635 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2636 mask_k |= SSL_kGOST;
2637 mask_a |= SSL_aGOST12;
2639 cpk = &(c->pkeys[SSL_PKEY_GOST12_256]);
2640 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2641 mask_k |= SSL_kGOST;
2642 mask_a |= SSL_aGOST12;
2644 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2645 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2646 mask_k |= SSL_kGOST;
2647 mask_a |= SSL_aGOST01;
2657 if (rsa_enc || rsa_sign) {
2665 mask_a |= SSL_aNULL;
2668 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2669 * depending on the key usage extension.
2671 #ifndef OPENSSL_NO_EC
2672 if (have_ecc_cert) {
2674 cpk = &c->pkeys[SSL_PKEY_ECC];
2676 ex_kusage = X509_get_key_usage(x);
2677 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2678 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2681 mask_a |= SSL_aECDSA;
2685 #ifndef OPENSSL_NO_EC
2686 mask_k |= SSL_kECDHE;
2689 #ifndef OPENSSL_NO_PSK
2692 if (mask_k & SSL_kRSA)
2693 mask_k |= SSL_kRSAPSK;
2694 if (mask_k & SSL_kDHE)
2695 mask_k |= SSL_kDHEPSK;
2696 if (mask_k & SSL_kECDHE)
2697 mask_k |= SSL_kECDHEPSK;
2700 s->s3->tmp.mask_k = mask_k;
2701 s->s3->tmp.mask_a = mask_a;
2704 #ifndef OPENSSL_NO_EC
2706 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2708 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
2709 /* key usage, if present, must allow signing */
2710 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
2711 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2712 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2716 return 1; /* all checks are ok */
2721 static int ssl_get_server_cert_index(const SSL *s)
2724 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2725 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2726 idx = SSL_PKEY_RSA_SIGN;
2727 if (idx == SSL_PKEY_GOST_EC) {
2728 if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)
2729 idx = SSL_PKEY_GOST12_512;
2730 else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509)
2731 idx = SSL_PKEY_GOST12_256;
2732 else if (s->cert->pkeys[SSL_PKEY_GOST01].x509)
2733 idx = SSL_PKEY_GOST01;
2738 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2742 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2748 if (!s->s3 || !s->s3->tmp.new_cipher)
2752 i = ssl_get_server_cert_index(s);
2754 /* This may or may not be an error. */
2759 return &c->pkeys[i];
2762 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2765 unsigned long alg_a;
2769 alg_a = cipher->algorithm_auth;
2772 if ((alg_a & SSL_aDSS) &&
2773 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2774 idx = SSL_PKEY_DSA_SIGN;
2775 else if (alg_a & SSL_aRSA) {
2776 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2777 idx = SSL_PKEY_RSA_SIGN;
2778 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2779 idx = SSL_PKEY_RSA_ENC;
2780 } else if ((alg_a & SSL_aECDSA) &&
2781 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2784 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2788 *pmd = s->s3->tmp.md[idx];
2789 return c->pkeys[idx].privatekey;
2792 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2793 size_t *serverinfo_length)
2797 *serverinfo_length = 0;
2800 i = ssl_get_server_cert_index(s);
2804 if (c->pkeys[i].serverinfo == NULL)
2807 *serverinfo = c->pkeys[i].serverinfo;
2808 *serverinfo_length = c->pkeys[i].serverinfo_length;
2812 void ssl_update_cache(SSL *s, int mode)
2817 * If the session_id_length is 0, we are not supposed to cache it, and it
2818 * would be rather hard to do anyway :-)
2820 if (s->session->session_id_length == 0)
2823 i = s->session_ctx->session_cache_mode;
2824 if ((i & mode) && (!s->hit)
2825 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2826 || SSL_CTX_add_session(s->session_ctx, s->session))
2827 && (s->session_ctx->new_session_cb != NULL)) {
2828 SSL_SESSION_up_ref(s->session);
2829 if (!s->session_ctx->new_session_cb(s, s->session))
2830 SSL_SESSION_free(s->session);
2833 /* auto flush every 255 connections */
2834 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2835 if ((((mode & SSL_SESS_CACHE_CLIENT)
2836 ? s->session_ctx->stats.sess_connect_good
2837 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2838 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2843 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2848 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2853 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2857 if (s->method != meth) {
2858 const SSL_METHOD *sm = s->method;
2859 int (*hf)(SSL *) = s->handshake_func;
2861 if (sm->version == meth->version)
2866 ret = s->method->ssl_new(s);
2869 if (hf == sm->ssl_connect)
2870 s->handshake_func = meth->ssl_connect;
2871 else if (hf == sm->ssl_accept)
2872 s->handshake_func = meth->ssl_accept;
2877 int SSL_get_error(const SSL *s, int i)
2884 return (SSL_ERROR_NONE);
2887 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2888 * where we do encode the error
2890 if ((l = ERR_peek_error()) != 0) {
2891 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2892 return (SSL_ERROR_SYSCALL);
2894 return (SSL_ERROR_SSL);
2898 if (SSL_want_read(s)) {
2899 bio = SSL_get_rbio(s);
2900 if (BIO_should_read(bio))
2901 return (SSL_ERROR_WANT_READ);
2902 else if (BIO_should_write(bio))
2904 * This one doesn't make too much sense ... We never try to write
2905 * to the rbio, and an application program where rbio and wbio
2906 * are separate couldn't even know what it should wait for.
2907 * However if we ever set s->rwstate incorrectly (so that we have
2908 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2909 * wbio *are* the same, this test works around that bug; so it
2910 * might be safer to keep it.
2912 return (SSL_ERROR_WANT_WRITE);
2913 else if (BIO_should_io_special(bio)) {
2914 reason = BIO_get_retry_reason(bio);
2915 if (reason == BIO_RR_CONNECT)
2916 return (SSL_ERROR_WANT_CONNECT);
2917 else if (reason == BIO_RR_ACCEPT)
2918 return (SSL_ERROR_WANT_ACCEPT);
2920 return (SSL_ERROR_SYSCALL); /* unknown */
2924 if (SSL_want_write(s)) {
2926 * Access wbio directly - in order to use the buffered bio if
2930 if (BIO_should_write(bio))
2931 return (SSL_ERROR_WANT_WRITE);
2932 else if (BIO_should_read(bio))
2934 * See above (SSL_want_read(s) with BIO_should_write(bio))
2936 return (SSL_ERROR_WANT_READ);
2937 else if (BIO_should_io_special(bio)) {
2938 reason = BIO_get_retry_reason(bio);
2939 if (reason == BIO_RR_CONNECT)
2940 return (SSL_ERROR_WANT_CONNECT);
2941 else if (reason == BIO_RR_ACCEPT)
2942 return (SSL_ERROR_WANT_ACCEPT);
2944 return (SSL_ERROR_SYSCALL);
2947 if (SSL_want_x509_lookup(s)) {
2948 return (SSL_ERROR_WANT_X509_LOOKUP);
2950 if (SSL_want_async(s)) {
2951 return SSL_ERROR_WANT_ASYNC;
2953 if (SSL_want_async_job(s)) {
2954 return SSL_ERROR_WANT_ASYNC_JOB;
2959 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2960 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2961 return (SSL_ERROR_ZERO_RETURN);
2963 return (SSL_ERROR_SYSCALL);
2966 static int ssl_do_handshake_intern(void *vargs)
2968 struct ssl_async_args *args;
2971 args = (struct ssl_async_args *)vargs;
2974 return s->handshake_func(s);
2977 int SSL_do_handshake(SSL *s)
2981 if (s->handshake_func == NULL) {
2982 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2986 s->method->ssl_renegotiate_check(s);
2988 if (SSL_in_init(s) || SSL_in_before(s)) {
2989 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2990 struct ssl_async_args args;
2994 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
2996 ret = s->handshake_func(s);
3002 void SSL_set_accept_state(SSL *s)
3006 ossl_statem_clear(s);
3007 s->handshake_func = s->method->ssl_accept;
3011 void SSL_set_connect_state(SSL *s)
3015 ossl_statem_clear(s);
3016 s->handshake_func = s->method->ssl_connect;
3020 int ssl_undefined_function(SSL *s)
3022 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3026 int ssl_undefined_void_function(void)
3028 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3029 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3033 int ssl_undefined_const_function(const SSL *s)
3038 const SSL_METHOD *ssl_bad_method(int ver)
3040 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3044 const char *ssl_protocol_to_string(int version)
3046 if (version == TLS1_2_VERSION)
3048 else if (version == TLS1_1_VERSION)
3050 else if (version == TLS1_VERSION)
3052 else if (version == SSL3_VERSION)
3054 else if (version == DTLS1_BAD_VER)
3056 else if (version == DTLS1_VERSION)
3058 else if (version == DTLS1_2_VERSION)
3064 const char *SSL_get_version(const SSL *s)
3066 return ssl_protocol_to_string(s->version);
3069 SSL *SSL_dup(SSL *s)
3071 STACK_OF(X509_NAME) *sk;
3076 /* If we're not quiescent, just up_ref! */
3077 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3078 CRYPTO_atomic_add(&s->references, 1, &i, s->lock);
3083 * Otherwise, copy configuration state, and session if set.
3085 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3088 if (s->session != NULL) {
3090 * Arranges to share the same session via up_ref. This "copies"
3091 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3093 if (!SSL_copy_session_id(ret, s))
3097 * No session has been established yet, so we have to expect that
3098 * s->cert or ret->cert will be changed later -- they should not both
3099 * point to the same object, and thus we can't use
3100 * SSL_copy_session_id.
3102 if (!SSL_set_ssl_method(ret, s->method))
3105 if (s->cert != NULL) {
3106 ssl_cert_free(ret->cert);
3107 ret->cert = ssl_cert_dup(s->cert);
3108 if (ret->cert == NULL)
3112 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
3116 if (!ssl_dane_dup(ret, s))
3118 ret->version = s->version;
3119 ret->options = s->options;
3120 ret->mode = s->mode;
3121 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3122 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3123 ret->msg_callback = s->msg_callback;
3124 ret->msg_callback_arg = s->msg_callback_arg;
3125 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3126 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3127 ret->generate_session_id = s->generate_session_id;
3129 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3131 /* copy app data, a little dangerous perhaps */
3132 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3135 /* setup rbio, and wbio */
3136 if (s->rbio != NULL) {
3137 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3140 if (s->wbio != NULL) {
3141 if (s->wbio != s->rbio) {
3142 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3145 ret->wbio = ret->rbio;
3148 ret->server = s->server;
3149 if (s->handshake_func) {
3151 SSL_set_accept_state(ret);
3153 SSL_set_connect_state(ret);
3155 ret->shutdown = s->shutdown;
3158 ret->default_passwd_callback = s->default_passwd_callback;
3159 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3161 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3163 /* dup the cipher_list and cipher_list_by_id stacks */
3164 if (s->cipher_list != NULL) {
3165 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3168 if (s->cipher_list_by_id != NULL)
3169 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3173 /* Dup the client_CA list */
3174 if (s->client_CA != NULL) {
3175 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
3177 ret->client_CA = sk;
3178 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3179 xn = sk_X509_NAME_value(sk, i);
3180 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3193 void ssl_clear_cipher_ctx(SSL *s)
3195 if (s->enc_read_ctx != NULL) {
3196 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3197 s->enc_read_ctx = NULL;
3199 if (s->enc_write_ctx != NULL) {
3200 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3201 s->enc_write_ctx = NULL;
3203 #ifndef OPENSSL_NO_COMP
3204 COMP_CTX_free(s->expand);
3206 COMP_CTX_free(s->compress);
3211 X509 *SSL_get_certificate(const SSL *s)
3213 if (s->cert != NULL)
3214 return (s->cert->key->x509);
3219 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3221 if (s->cert != NULL)
3222 return (s->cert->key->privatekey);
3227 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3229 if (ctx->cert != NULL)
3230 return ctx->cert->key->x509;
3235 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3237 if (ctx->cert != NULL)
3238 return ctx->cert->key->privatekey;
3243 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3245 if ((s->session != NULL) && (s->session->cipher != NULL))
3246 return (s->session->cipher);
3250 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3252 #ifndef OPENSSL_NO_COMP
3253 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3259 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3261 #ifndef OPENSSL_NO_COMP
3262 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3268 int ssl_init_wbio_buffer(SSL *s)
3272 if (s->bbio != NULL) {
3273 /* Already buffered. */
3277 bbio = BIO_new(BIO_f_buffer());
3278 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3280 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3284 s->wbio = BIO_push(bbio, s->wbio);
3289 void ssl_free_wbio_buffer(SSL *s)
3291 /* callers ensure s is never null */
3292 if (s->bbio == NULL)
3295 s->wbio = BIO_pop(s->wbio);
3296 assert(s->wbio != NULL);
3301 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3303 ctx->quiet_shutdown = mode;
3306 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3308 return (ctx->quiet_shutdown);
3311 void SSL_set_quiet_shutdown(SSL *s, int mode)
3313 s->quiet_shutdown = mode;
3316 int SSL_get_quiet_shutdown(const SSL *s)
3318 return (s->quiet_shutdown);
3321 void SSL_set_shutdown(SSL *s, int mode)
3326 int SSL_get_shutdown(const SSL *s)
3331 int SSL_version(const SSL *s)
3336 int SSL_client_version(const SSL *s)
3338 return s->client_version;
3341 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3346 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3349 if (ssl->ctx == ctx)
3352 ctx = ssl->initial_ctx;
3353 new_cert = ssl_cert_dup(ctx->cert);
3354 if (new_cert == NULL) {
3357 ssl_cert_free(ssl->cert);
3358 ssl->cert = new_cert;
3361 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3362 * so setter APIs must prevent invalid lengths from entering the system.
3364 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3367 * If the session ID context matches that of the parent SSL_CTX,
3368 * inherit it from the new SSL_CTX as well. If however the context does
3369 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3370 * leave it unchanged.
3372 if ((ssl->ctx != NULL) &&
3373 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3374 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3375 ssl->sid_ctx_length = ctx->sid_ctx_length;
3376 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3379 SSL_CTX_up_ref(ctx);
3380 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3386 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3388 return (X509_STORE_set_default_paths(ctx->cert_store));
3391 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3393 X509_LOOKUP *lookup;
3395 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3398 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3400 /* Clear any errors if the default directory does not exist */
3406 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3408 X509_LOOKUP *lookup;
3410 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3414 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3416 /* Clear any errors if the default file does not exist */
3422 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3425 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3428 void SSL_set_info_callback(SSL *ssl,
3429 void (*cb) (const SSL *ssl, int type, int val))
3431 ssl->info_callback = cb;
3435 * One compiler (Diab DCC) doesn't like argument names in returned function
3438 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3441 return ssl->info_callback;
3444 void SSL_set_verify_result(SSL *ssl, long arg)
3446 ssl->verify_result = arg;
3449 long SSL_get_verify_result(const SSL *ssl)
3451 return (ssl->verify_result);
3454 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3457 return sizeof(ssl->s3->client_random);
3458 if (outlen > sizeof(ssl->s3->client_random))
3459 outlen = sizeof(ssl->s3->client_random);
3460 memcpy(out, ssl->s3->client_random, outlen);
3464 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3467 return sizeof(ssl->s3->server_random);
3468 if (outlen > sizeof(ssl->s3->server_random))
3469 outlen = sizeof(ssl->s3->server_random);
3470 memcpy(out, ssl->s3->server_random, outlen);
3474 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3475 unsigned char *out, size_t outlen)
3477 if (session->master_key_length < 0) {
3478 /* Should never happen */
3482 return session->master_key_length;
3483 if (outlen > (size_t)session->master_key_length)
3484 outlen = session->master_key_length;
3485 memcpy(out, session->master_key, outlen);
3489 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3491 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3494 void *SSL_get_ex_data(const SSL *s, int idx)
3496 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3499 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3501 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3504 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3506 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3514 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3516 return (ctx->cert_store);
3519 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3521 X509_STORE_free(ctx->cert_store);
3522 ctx->cert_store = store;
3525 int SSL_want(const SSL *s)
3527 return (s->rwstate);
3531 * \brief Set the callback for generating temporary DH keys.
3532 * \param ctx the SSL context.
3533 * \param dh the callback
3536 #ifndef OPENSSL_NO_DH
3537 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3538 DH *(*dh) (SSL *ssl, int is_export,
3541 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3544 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3547 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3551 #ifndef OPENSSL_NO_PSK
3552 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3554 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3555 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3556 SSL_R_DATA_LENGTH_TOO_LONG);
3559 OPENSSL_free(ctx->cert->psk_identity_hint);
3560 if (identity_hint != NULL) {
3561 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3562 if (ctx->cert->psk_identity_hint == NULL)
3565 ctx->cert->psk_identity_hint = NULL;
3569 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3574 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3575 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3578 OPENSSL_free(s->cert->psk_identity_hint);
3579 if (identity_hint != NULL) {
3580 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3581 if (s->cert->psk_identity_hint == NULL)
3584 s->cert->psk_identity_hint = NULL;
3588 const char *SSL_get_psk_identity_hint(const SSL *s)
3590 if (s == NULL || s->session == NULL)
3592 return (s->session->psk_identity_hint);
3595 const char *SSL_get_psk_identity(const SSL *s)
3597 if (s == NULL || s->session == NULL)
3599 return (s->session->psk_identity);
3602 void SSL_set_psk_client_callback(SSL *s,
3603 unsigned int (*cb) (SSL *ssl,
3612 s->psk_client_callback = cb;
3615 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3616 unsigned int (*cb) (SSL *ssl,
3625 ctx->psk_client_callback = cb;
3628 void SSL_set_psk_server_callback(SSL *s,
3629 unsigned int (*cb) (SSL *ssl,
3630 const char *identity,
3635 s->psk_server_callback = cb;
3638 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3639 unsigned int (*cb) (SSL *ssl,
3640 const char *identity,
3645 ctx->psk_server_callback = cb;
3649 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3650 void (*cb) (int write_p, int version,
3651 int content_type, const void *buf,
3652 size_t len, SSL *ssl, void *arg))
3654 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3657 void SSL_set_msg_callback(SSL *ssl,
3658 void (*cb) (int write_p, int version,
3659 int content_type, const void *buf,
3660 size_t len, SSL *ssl, void *arg))
3662 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3665 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3666 int (*cb) (SSL *ssl,
3670 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3671 (void (*)(void))cb);
3674 void SSL_set_not_resumable_session_callback(SSL *ssl,
3675 int (*cb) (SSL *ssl,
3676 int is_forward_secure))
3678 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3679 (void (*)(void))cb);
3683 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3684 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3685 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3689 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3691 ssl_clear_hash_ctx(hash);
3692 *hash = EVP_MD_CTX_new();
3693 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3694 EVP_MD_CTX_free(*hash);
3701 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3705 EVP_MD_CTX_free(*hash);
3709 /* Retrieve handshake hashes */
3710 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3712 EVP_MD_CTX *ctx = NULL;
3713 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
3714 int ret = EVP_MD_CTX_size(hdgst);
3715 if (ret < 0 || ret > outlen) {
3719 ctx = EVP_MD_CTX_new();
3724 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
3725 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
3728 EVP_MD_CTX_free(ctx);
3732 int SSL_session_reused(SSL *s)
3737 int SSL_is_server(SSL *s)
3742 #if OPENSSL_API_COMPAT < 0x10100000L
3743 void SSL_set_debug(SSL *s, int debug)
3745 /* Old function was do-nothing anyway... */
3752 void SSL_set_security_level(SSL *s, int level)
3754 s->cert->sec_level = level;
3757 int SSL_get_security_level(const SSL *s)
3759 return s->cert->sec_level;
3762 void SSL_set_security_callback(SSL *s,
3763 int (*cb) (const SSL *s, const SSL_CTX *ctx, int op,
3764 int bits, int nid, void *other,
3767 s->cert->sec_cb = cb;
3770 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s, const SSL_CTX *ctx, int op,
3772 void *other, void *ex) {
3773 return s->cert->sec_cb;
3776 void SSL_set0_security_ex_data(SSL *s, void *ex)
3778 s->cert->sec_ex = ex;
3781 void *SSL_get0_security_ex_data(const SSL *s)
3783 return s->cert->sec_ex;
3786 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3788 ctx->cert->sec_level = level;
3791 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3793 return ctx->cert->sec_level;
3796 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3797 int (*cb) (const SSL *s, const SSL_CTX *ctx, int op,
3798 int bits, int nid, void *other,
3801 ctx->cert->sec_cb = cb;
3804 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
3810 return ctx->cert->sec_cb;
3813 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3815 ctx->cert->sec_ex = ex;
3818 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3820 return ctx->cert->sec_ex;
3825 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3826 * can return unsigned long, instead of the generic long return value from the
3827 * control interface.
3829 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
3831 return ctx->options;
3833 unsigned long SSL_get_options(const SSL* s)
3837 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
3839 return ctx->options |= op;
3841 unsigned long SSL_set_options(SSL *s, unsigned long op)
3843 return s->options |= op;
3845 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
3847 return ctx->options &= ~op;
3849 unsigned long SSL_clear_options(SSL *s, unsigned long op)
3851 return s->options &= ~op;
3854 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
3856 return s->verified_chain;
3859 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
3861 #ifndef OPENSSL_NO_CT
3864 * Moves SCTs from the |src| stack to the |dst| stack.
3865 * The source of each SCT will be set to |origin|.
3866 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3868 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3870 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src, sct_source_t origin)
3876 *dst = sk_SCT_new_null();
3878 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
3883 while ((sct = sk_SCT_pop(src)) != NULL) {
3884 if (SCT_set_source(sct, origin) != 1)
3887 if (sk_SCT_push(*dst, sct) <= 0)
3895 sk_SCT_push(src, sct); /* Put the SCT back */
3900 * Look for data collected during ServerHello and parse if found.
3901 * Return 1 on success, 0 on failure.
3903 static int ct_extract_tls_extension_scts(SSL *s)
3905 int scts_extracted = 0;
3907 if (s->tlsext_scts != NULL) {
3908 const unsigned char *p = s->tlsext_scts;
3909 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->tlsext_scts_len);
3911 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
3913 SCT_LIST_free(scts);
3916 return scts_extracted;
3920 * Checks for an OCSP response and then attempts to extract any SCTs found if it
3921 * contains an SCT X509 extension. They will be stored in |s->scts|.
3923 * - The number of SCTs extracted, assuming an OCSP response exists.
3924 * - 0 if no OCSP response exists or it contains no SCTs.
3925 * - A negative integer if an error occurs.
3927 static int ct_extract_ocsp_response_scts(SSL *s)
3929 #ifndef OPENSSL_NO_OCSP
3930 int scts_extracted = 0;
3931 const unsigned char *p;
3932 OCSP_BASICRESP *br = NULL;
3933 OCSP_RESPONSE *rsp = NULL;
3934 STACK_OF(SCT) *scts = NULL;
3937 if (s->tlsext_ocsp_resp == NULL || s->tlsext_ocsp_resplen == 0)
3940 p = s->tlsext_ocsp_resp;
3941 rsp = d2i_OCSP_RESPONSE(NULL, &p, s->tlsext_ocsp_resplen);
3945 br = OCSP_response_get1_basic(rsp);
3949 for (i = 0; i < OCSP_resp_count(br); ++i) {
3950 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
3955 scts = OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
3956 scts_extracted = ct_move_scts(&s->scts, scts,
3957 SCT_SOURCE_OCSP_STAPLED_RESPONSE);
3958 if (scts_extracted < 0)
3962 SCT_LIST_free(scts);
3963 OCSP_BASICRESP_free(br);
3964 OCSP_RESPONSE_free(rsp);
3965 return scts_extracted;
3967 /* Behave as if no OCSP response exists */
3973 * Attempts to extract SCTs from the peer certificate.
3974 * Return the number of SCTs extracted, or a negative integer if an error
3977 static int ct_extract_x509v3_extension_scts(SSL *s)
3979 int scts_extracted = 0;
3980 X509 *cert = s->session != NULL ? s->session->peer : NULL;
3983 STACK_OF(SCT) *scts =
3984 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
3987 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
3989 SCT_LIST_free(scts);
3992 return scts_extracted;
3996 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
3997 * response (if it exists) and X509v3 extensions in the certificate.
3998 * Returns NULL if an error occurs.
4000 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4002 if (!s->scts_parsed) {
4003 if (ct_extract_tls_extension_scts(s) < 0 ||
4004 ct_extract_ocsp_response_scts(s) < 0 ||
4005 ct_extract_x509v3_extension_scts(s) < 0)
4015 static int ct_permissive(const CT_POLICY_EVAL_CTX *ctx,
4016 const STACK_OF(SCT) *scts, void *unused_arg)
4021 static int ct_strict(const CT_POLICY_EVAL_CTX *ctx,
4022 const STACK_OF(SCT) *scts, void *unused_arg)
4024 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4027 for (i = 0; i < count; ++i) {
4028 SCT *sct = sk_SCT_value(scts, i);
4029 int status = SCT_get_validation_status(sct);
4031 if (status == SCT_VALIDATION_STATUS_VALID)
4034 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4038 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4042 * Since code exists that uses the custom extension handler for CT, look
4043 * for this and throw an error if they have already registered to use CT.
4045 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4046 TLSEXT_TYPE_signed_certificate_timestamp)) {
4047 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4048 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4052 if (callback != NULL) {
4053 /* If we are validating CT, then we MUST accept SCTs served via OCSP */
4054 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4058 s->ct_validation_callback = callback;
4059 s->ct_validation_callback_arg = arg;
4064 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4065 ssl_ct_validation_cb callback,
4069 * Since code exists that uses the custom extension handler for CT, look for
4070 * this and throw an error if they have already registered to use CT.
4072 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4073 TLSEXT_TYPE_signed_certificate_timestamp)) {
4074 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4075 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4079 ctx->ct_validation_callback = callback;
4080 ctx->ct_validation_callback_arg = arg;
4084 int SSL_ct_is_enabled(const SSL *s)
4086 return s->ct_validation_callback != NULL;
4089 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4091 return ctx->ct_validation_callback != NULL;
4094 int ssl_validate_ct(SSL *s)
4097 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4099 SSL_DANE *dane = &s->dane;
4100 CT_POLICY_EVAL_CTX *ctx = NULL;
4101 const STACK_OF(SCT) *scts;
4104 * If no callback is set, the peer is anonymous, or its chain is invalid,
4105 * skip SCT validation - just return success. Applications that continue
4106 * handshakes without certificates, with unverified chains, or pinned leaf
4107 * certificates are outside the scope of the WebPKI and CT.
4109 * The above exclusions notwithstanding the vast majority of peers will
4110 * have rather ordinary certificate chains validated by typical
4111 * applications that perform certificate verification and therefore will
4112 * process SCTs when enabled.
4114 if (s->ct_validation_callback == NULL || cert == NULL ||
4115 s->verify_result != X509_V_OK ||
4116 s->verified_chain == NULL ||
4117 sk_X509_num(s->verified_chain) <= 1)
4121 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4122 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4124 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4125 switch (dane->mtlsa->usage) {
4126 case DANETLS_USAGE_DANE_TA:
4127 case DANETLS_USAGE_DANE_EE:
4132 ctx = CT_POLICY_EVAL_CTX_new();
4134 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4138 issuer = sk_X509_value(s->verified_chain, 1);
4139 CT_POLICY_EVAL_CTX_set0_cert(ctx, cert);
4140 CT_POLICY_EVAL_CTX_set0_issuer(ctx, issuer);
4141 CT_POLICY_EVAL_CTX_set0_log_store(ctx, s->ctx->ctlog_store);
4143 scts = SSL_get0_peer_scts(s);
4146 * This function returns success (> 0) only when all the SCTs are valid, 0
4147 * when some are invalid, and < 0 on various internal errors (out of
4148 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4149 * reason to abort the handshake, that decision is up to the callback.
4150 * Therefore, we error out only in the unexpected case that the return
4151 * value is negative.
4153 * XXX: One might well argue that the return value of this function is an
4154 * unfortunate design choice. Its job is only to determine the validation
4155 * status of each of the provided SCTs. So long as it correctly separates
4156 * the wheat from the chaff it should return success. Failure in this case
4157 * ought to correspond to an inability to carry out its duties.
4159 if (SCT_LIST_validate(scts, ctx) < 0) {
4160 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4164 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4166 ret = 0; /* This function returns 0 on failure */
4169 CT_POLICY_EVAL_CTX_free(ctx);
4171 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4172 * failure return code here. Also the application may wish the complete
4173 * the handshake, and then disconnect cleanly at a higher layer, after
4174 * checking the verification status of the completed connection.
4176 * We therefore force a certificate verification failure which will be
4177 * visible via SSL_get_verify_result() and cached as part of any resumed
4180 * Note: the permissive callback is for information gathering only, always
4181 * returns success, and does not affect verification status. Only the
4182 * strict callback or a custom application-specified callback can trigger
4183 * connection failure or record a verification error.
4186 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4190 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4192 switch (validation_mode) {
4194 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4196 case SSL_CT_VALIDATION_PERMISSIVE:
4197 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4198 case SSL_CT_VALIDATION_STRICT:
4199 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4203 int SSL_enable_ct(SSL *s, int validation_mode)
4205 switch (validation_mode) {
4207 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4209 case SSL_CT_VALIDATION_PERMISSIVE:
4210 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4211 case SSL_CT_VALIDATION_STRICT:
4212 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4216 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4218 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4221 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4223 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4226 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE *logs)
4228 CTLOG_STORE_free(ctx->ctlog_store);
4229 ctx->ctlog_store = logs;
4232 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4234 return ctx->ctlog_store;