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 *);
99 DANETLS_MATCHING_FULL, 0, NID_undef
102 DANETLS_MATCHING_2256, 1, NID_sha256
105 DANETLS_MATCHING_2512, 2, NID_sha512
109 static int dane_ctx_enable(struct dane_ctx_st *dctx)
111 const EVP_MD **mdevp;
113 uint8_t mdmax = DANETLS_MATCHING_LAST;
114 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
117 if (dctx->mdevp != NULL)
120 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
121 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
123 if (mdord == NULL || mdevp == NULL) {
126 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
130 /* Install default entries */
131 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
134 if (dane_mds[i].nid == NID_undef ||
135 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
137 mdevp[dane_mds[i].mtype] = md;
138 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
148 static void dane_ctx_final(struct dane_ctx_st *dctx)
150 OPENSSL_free(dctx->mdevp);
153 OPENSSL_free(dctx->mdord);
158 static void tlsa_free(danetls_record *t)
162 OPENSSL_free(t->data);
163 EVP_PKEY_free(t->spki);
167 static void dane_final(SSL_DANE *dane)
169 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
172 sk_X509_pop_free(dane->certs, X509_free);
175 X509_free(dane->mcert);
183 * dane_copy - Copy dane configuration, sans verification state.
185 static int ssl_dane_dup(SSL *to, SSL *from)
190 if (!DANETLS_ENABLED(&from->dane))
193 dane_final(&to->dane);
194 to->dane.flags = from->dane.flags;
195 to->dane.dctx = &to->ctx->dane;
196 to->dane.trecs = sk_danetls_record_new_null();
198 if (to->dane.trecs == NULL) {
199 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
203 num = sk_danetls_record_num(from->dane.trecs);
204 for (i = 0; i < num; ++i) {
205 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
207 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
208 t->data, t->dlen) <= 0)
214 static int dane_mtype_set(struct dane_ctx_st *dctx,
215 const EVP_MD *md, uint8_t mtype, uint8_t ord)
219 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
220 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
224 if (mtype > dctx->mdmax) {
225 const EVP_MD **mdevp;
227 int n = ((int)mtype) + 1;
229 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
231 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
236 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
238 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
243 /* Zero-fill any gaps */
244 for (i = dctx->mdmax + 1; i < mtype; ++i) {
252 dctx->mdevp[mtype] = md;
253 /* Coerce ordinal of disabled matching types to 0 */
254 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
259 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
261 if (mtype > dane->dctx->mdmax)
263 return dane->dctx->mdevp[mtype];
266 static int dane_tlsa_add(SSL_DANE *dane,
269 uint8_t mtype, unsigned char *data, size_t dlen)
272 const EVP_MD *md = NULL;
273 int ilen = (int)dlen;
277 if (dane->trecs == NULL) {
278 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
282 if (ilen < 0 || dlen != (size_t)ilen) {
283 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
287 if (usage > DANETLS_USAGE_LAST) {
288 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
292 if (selector > DANETLS_SELECTOR_LAST) {
293 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
297 if (mtype != DANETLS_MATCHING_FULL) {
298 md = tlsa_md_get(dane, mtype);
300 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
305 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
306 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
310 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
314 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
315 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
320 t->selector = selector;
322 t->data = OPENSSL_malloc(ilen);
323 if (t->data == NULL) {
325 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
328 memcpy(t->data, data, ilen);
331 /* Validate and cache full certificate or public key */
332 if (mtype == DANETLS_MATCHING_FULL) {
333 const unsigned char *p = data;
335 EVP_PKEY *pkey = NULL;
338 case DANETLS_SELECTOR_CERT:
339 if (!d2i_X509(&cert, &p, dlen) || p < data ||
340 dlen != (size_t)(p - data)) {
342 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
345 if (X509_get0_pubkey(cert) == NULL) {
347 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
351 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
357 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
358 * records that contain full certificates of trust-anchors that are
359 * not present in the wire chain. For usage PKIX-TA(0), we augment
360 * the chain with untrusted Full(0) certificates from DNS, in case
361 * they are missing from the chain.
363 if ((dane->certs == NULL &&
364 (dane->certs = sk_X509_new_null()) == NULL) ||
365 !sk_X509_push(dane->certs, cert)) {
366 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
373 case DANETLS_SELECTOR_SPKI:
374 if (!d2i_PUBKEY(&pkey, &p, dlen) || p < data ||
375 dlen != (size_t)(p - data)) {
377 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
382 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
383 * records that contain full bare keys of trust-anchors that are
384 * not present in the wire chain.
386 if (usage == DANETLS_USAGE_DANE_TA)
395 * Find the right insertion point for the new record.
397 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
398 * they can be processed first, as they require no chain building, and no
399 * expiration or hostname checks. Because DANE-EE(3) is numerically
400 * largest, this is accomplished via descending sort by "usage".
402 * We also sort in descending order by matching ordinal to simplify
403 * the implementation of digest agility in the verification code.
405 * The choice of order for the selector is not significant, so we
406 * use the same descending order for consistency.
408 num = sk_danetls_record_num(dane->trecs);
409 for (i = 0; i < num; ++i) {
410 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
412 if (rec->usage > usage)
414 if (rec->usage < usage)
416 if (rec->selector > selector)
418 if (rec->selector < selector)
420 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
425 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
427 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
430 dane->umask |= DANETLS_USAGE_BIT(usage);
435 static void clear_ciphers(SSL *s)
437 /* clear the current cipher */
438 ssl_clear_cipher_ctx(s);
439 ssl_clear_hash_ctx(&s->read_hash);
440 ssl_clear_hash_ctx(&s->write_hash);
443 int SSL_clear(SSL *s)
445 if (s->method == NULL) {
446 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
450 if (ssl_clear_bad_session(s)) {
451 SSL_SESSION_free(s->session);
459 if (s->renegotiate) {
460 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
464 ossl_statem_clear(s);
466 s->version = s->method->version;
467 s->client_version = s->version;
468 s->rwstate = SSL_NOTHING;
470 BUF_MEM_free(s->init_buf);
475 /* Reset DANE verification result state */
478 X509_free(s->dane.mcert);
479 s->dane.mcert = NULL;
480 s->dane.mtlsa = NULL;
482 /* Clear the verification result peername */
483 X509_VERIFY_PARAM_move_peername(s->param, NULL);
486 * Check to see if we were changed into a different method, if so, revert
487 * back if we are not doing session-id reuse.
489 if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
490 && (s->method != s->ctx->method)) {
491 s->method->ssl_free(s);
492 s->method = s->ctx->method;
493 if (!s->method->ssl_new(s))
496 s->method->ssl_clear(s);
498 RECORD_LAYER_clear(&s->rlayer);
503 /** Used to change an SSL_CTXs default SSL method type */
504 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
506 STACK_OF(SSL_CIPHER) *sk;
510 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
511 &(ctx->cipher_list_by_id),
512 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
513 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
514 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
520 SSL *SSL_new(SSL_CTX *ctx)
525 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
528 if (ctx->method == NULL) {
529 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
533 s = OPENSSL_zalloc(sizeof(*s));
537 s->lock = CRYPTO_THREAD_lock_new();
538 if (s->lock == NULL) {
539 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
544 RECORD_LAYER_init(&s->rlayer, s);
546 s->options = ctx->options;
547 s->dane.flags = ctx->dane.flags;
548 s->min_proto_version = ctx->min_proto_version;
549 s->max_proto_version = ctx->max_proto_version;
551 s->max_cert_list = ctx->max_cert_list;
555 * Earlier library versions used to copy the pointer to the CERT, not
556 * its contents; only when setting new parameters for the per-SSL
557 * copy, ssl_cert_new would be called (and the direct reference to
558 * the per-SSL_CTX settings would be lost, but those still were
559 * indirectly accessed for various purposes, and for that reason they
560 * used to be known as s->ctx->default_cert). Now we don't look at the
561 * SSL_CTX's CERT after having duplicated it once.
563 s->cert = ssl_cert_dup(ctx->cert);
567 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
568 s->msg_callback = ctx->msg_callback;
569 s->msg_callback_arg = ctx->msg_callback_arg;
570 s->verify_mode = ctx->verify_mode;
571 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
572 s->sid_ctx_length = ctx->sid_ctx_length;
573 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
574 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
575 s->verify_callback = ctx->default_verify_callback;
576 s->generate_session_id = ctx->generate_session_id;
578 s->param = X509_VERIFY_PARAM_new();
579 if (s->param == NULL)
581 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
582 s->quiet_shutdown = ctx->quiet_shutdown;
583 s->max_send_fragment = ctx->max_send_fragment;
584 s->split_send_fragment = ctx->split_send_fragment;
585 s->max_pipelines = ctx->max_pipelines;
586 if (s->max_pipelines > 1)
587 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
588 if (ctx->default_read_buf_len > 0)
589 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
593 s->tlsext_debug_cb = 0;
594 s->tlsext_debug_arg = NULL;
595 s->tlsext_ticket_expected = 0;
596 s->tlsext_status_type = ctx->tlsext_status_type;
597 s->tlsext_status_expected = 0;
598 s->tlsext_ocsp_ids = NULL;
599 s->tlsext_ocsp_exts = NULL;
600 s->tlsext_ocsp_resp = NULL;
601 s->tlsext_ocsp_resplen = -1;
603 s->initial_ctx = ctx;
604 #ifndef OPENSSL_NO_EC
605 if (ctx->tlsext_ecpointformatlist) {
606 s->tlsext_ecpointformatlist =
607 OPENSSL_memdup(ctx->tlsext_ecpointformatlist,
608 ctx->tlsext_ecpointformatlist_length);
609 if (!s->tlsext_ecpointformatlist)
611 s->tlsext_ecpointformatlist_length =
612 ctx->tlsext_ecpointformatlist_length;
614 if (ctx->tlsext_ellipticcurvelist) {
615 s->tlsext_ellipticcurvelist =
616 OPENSSL_memdup(ctx->tlsext_ellipticcurvelist,
617 ctx->tlsext_ellipticcurvelist_length);
618 if (!s->tlsext_ellipticcurvelist)
620 s->tlsext_ellipticcurvelist_length =
621 ctx->tlsext_ellipticcurvelist_length;
624 #ifndef OPENSSL_NO_NEXTPROTONEG
625 s->next_proto_negotiated = NULL;
628 if (s->ctx->alpn_client_proto_list) {
629 s->alpn_client_proto_list =
630 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
631 if (s->alpn_client_proto_list == NULL)
633 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
634 s->ctx->alpn_client_proto_list_len);
635 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
638 s->verified_chain = NULL;
639 s->verify_result = X509_V_OK;
641 s->default_passwd_callback = ctx->default_passwd_callback;
642 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
644 s->method = ctx->method;
646 if (!s->method->ssl_new(s))
649 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
654 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
657 #ifndef OPENSSL_NO_PSK
658 s->psk_client_callback = ctx->psk_client_callback;
659 s->psk_server_callback = ctx->psk_server_callback;
664 #ifndef OPENSSL_NO_CT
665 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
666 ctx->ct_validation_callback_arg))
673 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
677 int SSL_is_dtls(const SSL *s)
679 return SSL_IS_DTLS(s) ? 1 : 0;
682 int SSL_up_ref(SSL *s)
686 if (CRYPTO_atomic_add(&s->references, 1, &i, s->lock) <= 0)
689 REF_PRINT_COUNT("SSL", s);
690 REF_ASSERT_ISNT(i < 2);
691 return ((i > 1) ? 1 : 0);
694 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
695 unsigned int sid_ctx_len)
697 if (sid_ctx_len > sizeof ctx->sid_ctx) {
698 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
699 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
702 ctx->sid_ctx_length = sid_ctx_len;
703 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
708 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
709 unsigned int sid_ctx_len)
711 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
712 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
713 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
716 ssl->sid_ctx_length = sid_ctx_len;
717 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
722 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
724 CRYPTO_THREAD_write_lock(ctx->lock);
725 ctx->generate_session_id = cb;
726 CRYPTO_THREAD_unlock(ctx->lock);
730 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
732 CRYPTO_THREAD_write_lock(ssl->lock);
733 ssl->generate_session_id = cb;
734 CRYPTO_THREAD_unlock(ssl->lock);
738 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
742 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
743 * we can "construct" a session to give us the desired check - ie. to
744 * find if there's a session in the hash table that would conflict with
745 * any new session built out of this id/id_len and the ssl_version in use
750 if (id_len > sizeof r.session_id)
753 r.ssl_version = ssl->version;
754 r.session_id_length = id_len;
755 memcpy(r.session_id, id, id_len);
757 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
758 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
759 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
763 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
765 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
768 int SSL_set_purpose(SSL *s, int purpose)
770 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
773 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
775 return X509_VERIFY_PARAM_set_trust(s->param, trust);
778 int SSL_set_trust(SSL *s, int trust)
780 return X509_VERIFY_PARAM_set_trust(s->param, trust);
783 int SSL_set1_host(SSL *s, const char *hostname)
785 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
788 int SSL_add1_host(SSL *s, const char *hostname)
790 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
793 void SSL_set_hostflags(SSL *s, unsigned int flags)
795 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
798 const char *SSL_get0_peername(SSL *s)
800 return X509_VERIFY_PARAM_get0_peername(s->param);
803 int SSL_CTX_dane_enable(SSL_CTX *ctx)
805 return dane_ctx_enable(&ctx->dane);
808 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
810 unsigned long orig = ctx->dane.flags;
812 ctx->dane.flags |= flags;
816 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
818 unsigned long orig = ctx->dane.flags;
820 ctx->dane.flags &= ~flags;
824 int SSL_dane_enable(SSL *s, const char *basedomain)
826 SSL_DANE *dane = &s->dane;
828 if (s->ctx->dane.mdmax == 0) {
829 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
832 if (dane->trecs != NULL) {
833 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
838 * Default SNI name. This rejects empty names, while set1_host below
839 * accepts them and disables host name checks. To avoid side-effects with
840 * invalid input, set the SNI name first.
842 if (s->tlsext_hostname == NULL) {
843 if (!SSL_set_tlsext_host_name(s, basedomain)) {
844 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
849 /* Primary RFC6125 reference identifier */
850 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
851 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
857 dane->dctx = &s->ctx->dane;
858 dane->trecs = sk_danetls_record_new_null();
860 if (dane->trecs == NULL) {
861 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
867 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
869 unsigned long orig = ssl->dane.flags;
871 ssl->dane.flags |= flags;
875 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
877 unsigned long orig = ssl->dane.flags;
879 ssl->dane.flags &= ~flags;
883 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
885 SSL_DANE *dane = &s->dane;
887 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
891 *mcert = dane->mcert;
893 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
898 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
899 uint8_t *mtype, unsigned const char **data, size_t *dlen)
901 SSL_DANE *dane = &s->dane;
903 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
907 *usage = dane->mtlsa->usage;
909 *selector = dane->mtlsa->selector;
911 *mtype = dane->mtlsa->mtype;
913 *data = dane->mtlsa->data;
915 *dlen = dane->mtlsa->dlen;
920 SSL_DANE *SSL_get0_dane(SSL *s)
925 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
926 uint8_t mtype, unsigned char *data, size_t dlen)
928 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
931 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
934 return dane_mtype_set(&ctx->dane, md, mtype, ord);
937 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
939 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
942 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
944 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
947 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
952 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
957 void SSL_certs_clear(SSL *s)
959 ssl_cert_clear_certs(s->cert);
962 void SSL_free(SSL *s)
969 CRYPTO_atomic_add(&s->references, -1, &i, s->lock);
970 REF_PRINT_COUNT("SSL", s);
973 REF_ASSERT_ISNT(i < 0);
975 X509_VERIFY_PARAM_free(s->param);
976 dane_final(&s->dane);
977 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
979 ssl_free_wbio_buffer(s);
981 BIO_free_all(s->wbio);
982 BIO_free_all(s->rbio);
984 BUF_MEM_free(s->init_buf);
986 /* add extra stuff */
987 sk_SSL_CIPHER_free(s->cipher_list);
988 sk_SSL_CIPHER_free(s->cipher_list_by_id);
990 /* Make the next call work :-) */
991 if (s->session != NULL) {
992 ssl_clear_bad_session(s);
993 SSL_SESSION_free(s->session);
998 ssl_cert_free(s->cert);
999 /* Free up if allocated */
1001 OPENSSL_free(s->tlsext_hostname);
1002 SSL_CTX_free(s->initial_ctx);
1003 #ifndef OPENSSL_NO_EC
1004 OPENSSL_free(s->tlsext_ecpointformatlist);
1005 OPENSSL_free(s->tlsext_ellipticcurvelist);
1006 #endif /* OPENSSL_NO_EC */
1007 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
1008 #ifndef OPENSSL_NO_OCSP
1009 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
1011 #ifndef OPENSSL_NO_CT
1012 SCT_LIST_free(s->scts);
1013 OPENSSL_free(s->tlsext_scts);
1015 OPENSSL_free(s->tlsext_ocsp_resp);
1016 OPENSSL_free(s->alpn_client_proto_list);
1018 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
1020 sk_X509_pop_free(s->verified_chain, X509_free);
1022 if (s->method != NULL)
1023 s->method->ssl_free(s);
1025 RECORD_LAYER_release(&s->rlayer);
1027 SSL_CTX_free(s->ctx);
1029 ASYNC_WAIT_CTX_free(s->waitctx);
1031 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1032 OPENSSL_free(s->next_proto_negotiated);
1035 #ifndef OPENSSL_NO_SRTP
1036 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1039 CRYPTO_THREAD_lock_free(s->lock);
1044 void SSL_set0_rbio(SSL *s, BIO *rbio)
1046 BIO_free_all(s->rbio);
1050 void SSL_set0_wbio(SSL *s, BIO *wbio)
1053 * If the output buffering BIO is still in place, remove it
1055 if (s->bbio != NULL)
1056 s->wbio = BIO_pop(s->wbio);
1058 BIO_free_all(s->wbio);
1061 /* Re-attach |bbio| to the new |wbio|. */
1062 if (s->bbio != NULL)
1063 s->wbio = BIO_push(s->bbio, s->wbio);
1066 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1069 * For historical reasons, this function has many different cases in
1070 * ownership handling.
1073 /* If nothing has changed, do nothing */
1074 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1078 * If the two arguments are equal then one fewer reference is granted by the
1079 * caller than we want to take
1081 if (rbio != NULL && rbio == wbio)
1085 * If only the wbio is changed only adopt one reference.
1087 if (rbio == SSL_get_rbio(s)) {
1088 SSL_set0_wbio(s, wbio);
1092 * There is an asymmetry here for historical reasons. If only the rbio is
1093 * changed AND the rbio and wbio were originally different, then we only
1094 * adopt one reference.
1096 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1097 SSL_set0_rbio(s, rbio);
1101 /* Otherwise, adopt both references. */
1102 SSL_set0_rbio(s, rbio);
1103 SSL_set0_wbio(s, wbio);
1106 BIO *SSL_get_rbio(const SSL *s)
1111 BIO *SSL_get_wbio(const SSL *s)
1113 if (s->bbio != NULL) {
1115 * If |bbio| is active, the true caller-configured BIO is its
1118 return BIO_next(s->bbio);
1123 int SSL_get_fd(const SSL *s)
1125 return SSL_get_rfd(s);
1128 int SSL_get_rfd(const SSL *s)
1133 b = SSL_get_rbio(s);
1134 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1136 BIO_get_fd(r, &ret);
1140 int SSL_get_wfd(const SSL *s)
1145 b = SSL_get_wbio(s);
1146 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1148 BIO_get_fd(r, &ret);
1152 #ifndef OPENSSL_NO_SOCK
1153 int SSL_set_fd(SSL *s, int fd)
1158 bio = BIO_new(BIO_s_socket());
1161 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1164 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1165 SSL_set_bio(s, bio, bio);
1171 int SSL_set_wfd(SSL *s, int fd)
1173 BIO *rbio = SSL_get_rbio(s);
1175 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1176 || (int)BIO_get_fd(rbio, NULL) != fd) {
1177 BIO *bio = BIO_new(BIO_s_socket());
1180 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1183 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1184 SSL_set0_wbio(s, bio);
1187 SSL_set0_wbio(s, rbio);
1192 int SSL_set_rfd(SSL *s, int fd)
1194 BIO *wbio = SSL_get_wbio(s);
1196 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1197 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1198 BIO *bio = BIO_new(BIO_s_socket());
1201 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1204 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1205 SSL_set0_rbio(s, bio);
1208 SSL_set0_rbio(s, wbio);
1215 /* return length of latest Finished message we sent, copy to 'buf' */
1216 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1220 if (s->s3 != NULL) {
1221 ret = s->s3->tmp.finish_md_len;
1224 memcpy(buf, s->s3->tmp.finish_md, count);
1229 /* return length of latest Finished message we expected, copy to 'buf' */
1230 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1234 if (s->s3 != NULL) {
1235 ret = s->s3->tmp.peer_finish_md_len;
1238 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1243 int SSL_get_verify_mode(const SSL *s)
1245 return (s->verify_mode);
1248 int SSL_get_verify_depth(const SSL *s)
1250 return X509_VERIFY_PARAM_get_depth(s->param);
1253 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1254 return (s->verify_callback);
1257 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1259 return (ctx->verify_mode);
1262 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1264 return X509_VERIFY_PARAM_get_depth(ctx->param);
1267 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1268 return (ctx->default_verify_callback);
1271 void SSL_set_verify(SSL *s, int mode,
1272 int (*callback) (int ok, X509_STORE_CTX *ctx))
1274 s->verify_mode = mode;
1275 if (callback != NULL)
1276 s->verify_callback = callback;
1279 void SSL_set_verify_depth(SSL *s, int depth)
1281 X509_VERIFY_PARAM_set_depth(s->param, depth);
1284 void SSL_set_read_ahead(SSL *s, int yes)
1286 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1289 int SSL_get_read_ahead(const SSL *s)
1291 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1294 int SSL_pending(const SSL *s)
1297 * SSL_pending cannot work properly if read-ahead is enabled
1298 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1299 * impossible to fix since SSL_pending cannot report errors that may be
1300 * observed while scanning the new data. (Note that SSL_pending() is
1301 * often used as a boolean value, so we'd better not return -1.)
1303 return (s->method->ssl_pending(s));
1306 int SSL_has_pending(const SSL *s)
1309 * Similar to SSL_pending() but returns a 1 to indicate that we have
1310 * unprocessed data available or 0 otherwise (as opposed to the number of
1311 * bytes available). Unlike SSL_pending() this will take into account
1312 * read_ahead data. A 1 return simply indicates that we have unprocessed
1313 * data. That data may not result in any application data, or we may fail
1314 * to parse the records for some reason.
1319 return RECORD_LAYER_read_pending(&s->rlayer);
1322 X509 *SSL_get_peer_certificate(const SSL *s)
1326 if ((s == NULL) || (s->session == NULL))
1329 r = s->session->peer;
1339 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1343 if ((s == NULL) || (s->session == NULL))
1346 r = s->session->peer_chain;
1349 * If we are a client, cert_chain includes the peer's own certificate; if
1350 * we are a server, it does not.
1357 * Now in theory, since the calling process own 't' it should be safe to
1358 * modify. We need to be able to read f without being hassled
1360 int SSL_copy_session_id(SSL *t, const SSL *f)
1363 /* Do we need to to SSL locking? */
1364 if (!SSL_set_session(t, SSL_get_session(f))) {
1369 * what if we are setup for one protocol version but want to talk another
1371 if (t->method != f->method) {
1372 t->method->ssl_free(t);
1373 t->method = f->method;
1374 if (t->method->ssl_new(t) == 0)
1378 CRYPTO_atomic_add(&f->cert->references, 1, &i, f->cert->lock);
1379 ssl_cert_free(t->cert);
1381 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
1388 /* Fix this so it checks all the valid key/cert options */
1389 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1391 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1392 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1395 if (ctx->cert->key->privatekey == NULL) {
1396 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1399 return (X509_check_private_key
1400 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1403 /* Fix this function so that it takes an optional type parameter */
1404 int SSL_check_private_key(const SSL *ssl)
1407 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1410 if (ssl->cert->key->x509 == NULL) {
1411 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1414 if (ssl->cert->key->privatekey == NULL) {
1415 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1418 return (X509_check_private_key(ssl->cert->key->x509,
1419 ssl->cert->key->privatekey));
1422 int SSL_waiting_for_async(SSL *s)
1430 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1432 ASYNC_WAIT_CTX *ctx = s->waitctx;
1436 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1439 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1440 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1442 ASYNC_WAIT_CTX *ctx = s->waitctx;
1446 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1450 int SSL_accept(SSL *s)
1452 if (s->handshake_func == NULL) {
1453 /* Not properly initialized yet */
1454 SSL_set_accept_state(s);
1457 return SSL_do_handshake(s);
1460 int SSL_connect(SSL *s)
1462 if (s->handshake_func == NULL) {
1463 /* Not properly initialized yet */
1464 SSL_set_connect_state(s);
1467 return SSL_do_handshake(s);
1470 long SSL_get_default_timeout(const SSL *s)
1472 return (s->method->get_timeout());
1475 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1476 int (*func) (void *))
1479 if (s->waitctx == NULL) {
1480 s->waitctx = ASYNC_WAIT_CTX_new();
1481 if (s->waitctx == NULL)
1484 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1485 sizeof(struct ssl_async_args))) {
1487 s->rwstate = SSL_NOTHING;
1488 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1491 s->rwstate = SSL_ASYNC_PAUSED;
1494 s->rwstate = SSL_ASYNC_NO_JOBS;
1500 s->rwstate = SSL_NOTHING;
1501 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1502 /* Shouldn't happen */
1507 static int ssl_io_intern(void *vargs)
1509 struct ssl_async_args *args;
1514 args = (struct ssl_async_args *)vargs;
1518 switch (args->type) {
1520 return args->f.func_read(s, buf, num);
1522 return args->f.func_write(s, buf, num);
1524 return args->f.func_other(s);
1529 int SSL_read(SSL *s, void *buf, int num)
1531 if (s->handshake_func == NULL) {
1532 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1536 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1537 s->rwstate = SSL_NOTHING;
1541 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1542 struct ssl_async_args args;
1547 args.type = READFUNC;
1548 args.f.func_read = s->method->ssl_read;
1550 return ssl_start_async_job(s, &args, ssl_io_intern);
1552 return s->method->ssl_read(s, buf, num);
1556 int SSL_peek(SSL *s, void *buf, int num)
1558 if (s->handshake_func == NULL) {
1559 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1563 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1566 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1567 struct ssl_async_args args;
1572 args.type = READFUNC;
1573 args.f.func_read = s->method->ssl_peek;
1575 return ssl_start_async_job(s, &args, ssl_io_intern);
1577 return s->method->ssl_peek(s, buf, num);
1581 int SSL_write(SSL *s, const void *buf, int num)
1583 if (s->handshake_func == NULL) {
1584 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1588 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1589 s->rwstate = SSL_NOTHING;
1590 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1594 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1595 struct ssl_async_args args;
1598 args.buf = (void *)buf;
1600 args.type = WRITEFUNC;
1601 args.f.func_write = s->method->ssl_write;
1603 return ssl_start_async_job(s, &args, ssl_io_intern);
1605 return s->method->ssl_write(s, buf, num);
1609 int SSL_shutdown(SSL *s)
1612 * Note that this function behaves differently from what one might
1613 * expect. Return values are 0 for no success (yet), 1 for success; but
1614 * calling it once is usually not enough, even if blocking I/O is used
1615 * (see ssl3_shutdown).
1618 if (s->handshake_func == NULL) {
1619 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1623 if (!SSL_in_init(s)) {
1624 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1625 struct ssl_async_args args;
1628 args.type = OTHERFUNC;
1629 args.f.func_other = s->method->ssl_shutdown;
1631 return ssl_start_async_job(s, &args, ssl_io_intern);
1633 return s->method->ssl_shutdown(s);
1636 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1641 int SSL_renegotiate(SSL *s)
1643 if (s->renegotiate == 0)
1648 return (s->method->ssl_renegotiate(s));
1651 int SSL_renegotiate_abbreviated(SSL *s)
1653 if (s->renegotiate == 0)
1658 return (s->method->ssl_renegotiate(s));
1661 int SSL_renegotiate_pending(SSL *s)
1664 * becomes true when negotiation is requested; false again once a
1665 * handshake has finished
1667 return (s->renegotiate != 0);
1670 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1675 case SSL_CTRL_GET_READ_AHEAD:
1676 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1677 case SSL_CTRL_SET_READ_AHEAD:
1678 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1679 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1682 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1683 s->msg_callback_arg = parg;
1687 return (s->mode |= larg);
1688 case SSL_CTRL_CLEAR_MODE:
1689 return (s->mode &= ~larg);
1690 case SSL_CTRL_GET_MAX_CERT_LIST:
1691 return (s->max_cert_list);
1692 case SSL_CTRL_SET_MAX_CERT_LIST:
1693 l = s->max_cert_list;
1694 s->max_cert_list = larg;
1696 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1697 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1699 s->max_send_fragment = larg;
1700 if (s->max_send_fragment < s->split_send_fragment)
1701 s->split_send_fragment = s->max_send_fragment;
1703 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1704 if ((unsigned int)larg > s->max_send_fragment || larg == 0)
1706 s->split_send_fragment = larg;
1708 case SSL_CTRL_SET_MAX_PIPELINES:
1709 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1711 s->max_pipelines = larg;
1713 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
1715 case SSL_CTRL_GET_RI_SUPPORT:
1717 return s->s3->send_connection_binding;
1720 case SSL_CTRL_CERT_FLAGS:
1721 return (s->cert->cert_flags |= larg);
1722 case SSL_CTRL_CLEAR_CERT_FLAGS:
1723 return (s->cert->cert_flags &= ~larg);
1725 case SSL_CTRL_GET_RAW_CIPHERLIST:
1727 if (s->s3->tmp.ciphers_raw == NULL)
1729 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1730 return (int)s->s3->tmp.ciphers_rawlen;
1732 return TLS_CIPHER_LEN;
1734 case SSL_CTRL_GET_EXTMS_SUPPORT:
1735 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1737 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1741 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1742 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1743 &s->min_proto_version);
1744 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1745 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1746 &s->max_proto_version);
1748 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1752 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1755 case SSL_CTRL_SET_MSG_CALLBACK:
1756 s->msg_callback = (void (*)
1757 (int write_p, int version, int content_type,
1758 const void *buf, size_t len, SSL *ssl,
1763 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1767 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1769 return ctx->sessions;
1772 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1775 /* For some cases with ctx == NULL perform syntax checks */
1778 #ifndef OPENSSL_NO_EC
1779 case SSL_CTRL_SET_CURVES_LIST:
1780 return tls1_set_curves_list(NULL, NULL, parg);
1782 case SSL_CTRL_SET_SIGALGS_LIST:
1783 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1784 return tls1_set_sigalgs_list(NULL, parg, 0);
1791 case SSL_CTRL_GET_READ_AHEAD:
1792 return (ctx->read_ahead);
1793 case SSL_CTRL_SET_READ_AHEAD:
1794 l = ctx->read_ahead;
1795 ctx->read_ahead = larg;
1798 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1799 ctx->msg_callback_arg = parg;
1802 case SSL_CTRL_GET_MAX_CERT_LIST:
1803 return (ctx->max_cert_list);
1804 case SSL_CTRL_SET_MAX_CERT_LIST:
1805 l = ctx->max_cert_list;
1806 ctx->max_cert_list = larg;
1809 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1810 l = ctx->session_cache_size;
1811 ctx->session_cache_size = larg;
1813 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1814 return (ctx->session_cache_size);
1815 case SSL_CTRL_SET_SESS_CACHE_MODE:
1816 l = ctx->session_cache_mode;
1817 ctx->session_cache_mode = larg;
1819 case SSL_CTRL_GET_SESS_CACHE_MODE:
1820 return (ctx->session_cache_mode);
1822 case SSL_CTRL_SESS_NUMBER:
1823 return (lh_SSL_SESSION_num_items(ctx->sessions));
1824 case SSL_CTRL_SESS_CONNECT:
1825 return (ctx->stats.sess_connect);
1826 case SSL_CTRL_SESS_CONNECT_GOOD:
1827 return (ctx->stats.sess_connect_good);
1828 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1829 return (ctx->stats.sess_connect_renegotiate);
1830 case SSL_CTRL_SESS_ACCEPT:
1831 return (ctx->stats.sess_accept);
1832 case SSL_CTRL_SESS_ACCEPT_GOOD:
1833 return (ctx->stats.sess_accept_good);
1834 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1835 return (ctx->stats.sess_accept_renegotiate);
1836 case SSL_CTRL_SESS_HIT:
1837 return (ctx->stats.sess_hit);
1838 case SSL_CTRL_SESS_CB_HIT:
1839 return (ctx->stats.sess_cb_hit);
1840 case SSL_CTRL_SESS_MISSES:
1841 return (ctx->stats.sess_miss);
1842 case SSL_CTRL_SESS_TIMEOUTS:
1843 return (ctx->stats.sess_timeout);
1844 case SSL_CTRL_SESS_CACHE_FULL:
1845 return (ctx->stats.sess_cache_full);
1847 return (ctx->mode |= larg);
1848 case SSL_CTRL_CLEAR_MODE:
1849 return (ctx->mode &= ~larg);
1850 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1851 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1853 ctx->max_send_fragment = larg;
1854 if (ctx->max_send_fragment < ctx->split_send_fragment)
1855 ctx->split_send_fragment = ctx->max_send_fragment;
1857 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1858 if ((unsigned int)larg > ctx->max_send_fragment || larg == 0)
1860 ctx->split_send_fragment = larg;
1862 case SSL_CTRL_SET_MAX_PIPELINES:
1863 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1865 ctx->max_pipelines = larg;
1867 case SSL_CTRL_CERT_FLAGS:
1868 return (ctx->cert->cert_flags |= larg);
1869 case SSL_CTRL_CLEAR_CERT_FLAGS:
1870 return (ctx->cert->cert_flags &= ~larg);
1871 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1872 return ssl_set_version_bound(ctx->method->version, (int)larg,
1873 &ctx->min_proto_version);
1874 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1875 return ssl_set_version_bound(ctx->method->version, (int)larg,
1876 &ctx->max_proto_version);
1878 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1882 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1885 case SSL_CTRL_SET_MSG_CALLBACK:
1886 ctx->msg_callback = (void (*)
1887 (int write_p, int version, int content_type,
1888 const void *buf, size_t len, SSL *ssl,
1893 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1897 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1906 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1907 const SSL_CIPHER *const *bp)
1909 if ((*ap)->id > (*bp)->id)
1911 if ((*ap)->id < (*bp)->id)
1916 /** return a STACK of the ciphers available for the SSL and in order of
1918 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1921 if (s->cipher_list != NULL) {
1922 return (s->cipher_list);
1923 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1924 return (s->ctx->cipher_list);
1930 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
1932 if ((s == NULL) || (s->session == NULL) || !s->server)
1934 return s->session->ciphers;
1937 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1939 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1941 ciphers = SSL_get_ciphers(s);
1944 ssl_set_client_disabled(s);
1945 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1946 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1947 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1949 sk = sk_SSL_CIPHER_new_null();
1952 if (!sk_SSL_CIPHER_push(sk, c)) {
1953 sk_SSL_CIPHER_free(sk);
1961 /** return a STACK of the ciphers available for the SSL and in order of
1963 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1966 if (s->cipher_list_by_id != NULL) {
1967 return (s->cipher_list_by_id);
1968 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1969 return (s->ctx->cipher_list_by_id);
1975 /** The old interface to get the same thing as SSL_get_ciphers() */
1976 const char *SSL_get_cipher_list(const SSL *s, int n)
1978 const SSL_CIPHER *c;
1979 STACK_OF(SSL_CIPHER) *sk;
1983 sk = SSL_get_ciphers(s);
1984 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1986 c = sk_SSL_CIPHER_value(sk, n);
1992 /** return a STACK of the ciphers available for the SSL_CTX and in order of
1994 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
1997 return ctx->cipher_list;
2001 /** specify the ciphers to be used by default by the SSL_CTX */
2002 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2004 STACK_OF(SSL_CIPHER) *sk;
2006 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2007 &ctx->cipher_list_by_id, str, ctx->cert);
2009 * ssl_create_cipher_list may return an empty stack if it was unable to
2010 * find a cipher matching the given rule string (for example if the rule
2011 * string specifies a cipher which has been disabled). This is not an
2012 * error as far as ssl_create_cipher_list is concerned, and hence
2013 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2017 else if (sk_SSL_CIPHER_num(sk) == 0) {
2018 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2024 /** specify the ciphers to be used by the SSL */
2025 int SSL_set_cipher_list(SSL *s, const char *str)
2027 STACK_OF(SSL_CIPHER) *sk;
2029 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2030 &s->cipher_list_by_id, str, s->cert);
2031 /* see comment in SSL_CTX_set_cipher_list */
2034 else if (sk_SSL_CIPHER_num(sk) == 0) {
2035 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2041 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2044 STACK_OF(SSL_CIPHER) *sk;
2045 const SSL_CIPHER *c;
2048 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2052 sk = s->session->ciphers;
2054 if (sk_SSL_CIPHER_num(sk) == 0)
2057 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2060 c = sk_SSL_CIPHER_value(sk, i);
2061 n = strlen(c->name);
2068 memcpy(p, c->name, n + 1);
2077 /** return a servername extension value if provided in Client Hello, or NULL.
2078 * So far, only host_name types are defined (RFC 3546).
2081 const char *SSL_get_servername(const SSL *s, const int type)
2083 if (type != TLSEXT_NAMETYPE_host_name)
2086 return s->session && !s->tlsext_hostname ?
2087 s->session->tlsext_hostname : s->tlsext_hostname;
2090 int SSL_get_servername_type(const SSL *s)
2093 && (!s->tlsext_hostname ? s->session->
2094 tlsext_hostname : s->tlsext_hostname))
2095 return TLSEXT_NAMETYPE_host_name;
2100 * SSL_select_next_proto implements the standard protocol selection. It is
2101 * expected that this function is called from the callback set by
2102 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2103 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2104 * not included in the length. A byte string of length 0 is invalid. No byte
2105 * string may be truncated. The current, but experimental algorithm for
2106 * selecting the protocol is: 1) If the server doesn't support NPN then this
2107 * is indicated to the callback. In this case, the client application has to
2108 * abort the connection or have a default application level protocol. 2) If
2109 * the server supports NPN, but advertises an empty list then the client
2110 * selects the first protocol in its list, but indicates via the API that this
2111 * fallback case was enacted. 3) Otherwise, the client finds the first
2112 * protocol in the server's list that it supports and selects this protocol.
2113 * This is because it's assumed that the server has better information about
2114 * which protocol a client should use. 4) If the client doesn't support any
2115 * of the server's advertised protocols, then this is treated the same as
2116 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2117 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2119 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2120 const unsigned char *server,
2121 unsigned int server_len,
2122 const unsigned char *client, unsigned int client_len)
2125 const unsigned char *result;
2126 int status = OPENSSL_NPN_UNSUPPORTED;
2129 * For each protocol in server preference order, see if we support it.
2131 for (i = 0; i < server_len;) {
2132 for (j = 0; j < client_len;) {
2133 if (server[i] == client[j] &&
2134 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2135 /* We found a match */
2136 result = &server[i];
2137 status = OPENSSL_NPN_NEGOTIATED;
2147 /* There's no overlap between our protocols and the server's list. */
2149 status = OPENSSL_NPN_NO_OVERLAP;
2152 *out = (unsigned char *)result + 1;
2153 *outlen = result[0];
2157 #ifndef OPENSSL_NO_NEXTPROTONEG
2159 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2160 * client's requested protocol for this connection and returns 0. If the
2161 * client didn't request any protocol, then *data is set to NULL. Note that
2162 * the client can request any protocol it chooses. The value returned from
2163 * this function need not be a member of the list of supported protocols
2164 * provided by the callback.
2166 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2169 *data = s->next_proto_negotiated;
2173 *len = s->next_proto_negotiated_len;
2178 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
2179 * a TLS server needs a list of supported protocols for Next Protocol
2180 * Negotiation. The returned list must be in wire format. The list is
2181 * returned by setting |out| to point to it and |outlen| to its length. This
2182 * memory will not be modified, but one should assume that the SSL* keeps a
2183 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2184 * wishes to advertise. Otherwise, no such extension will be included in the
2187 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
2188 int (*cb) (SSL *ssl,
2191 unsigned int *outlen,
2192 void *arg), void *arg)
2194 ctx->next_protos_advertised_cb = cb;
2195 ctx->next_protos_advertised_cb_arg = arg;
2199 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2200 * client needs to select a protocol from the server's provided list. |out|
2201 * must be set to point to the selected protocol (which may be within |in|).
2202 * The length of the protocol name must be written into |outlen|. The
2203 * server's advertised protocols are provided in |in| and |inlen|. The
2204 * callback can assume that |in| is syntactically valid. The client must
2205 * select a protocol. It is fatal to the connection if this callback returns
2206 * a value other than SSL_TLSEXT_ERR_OK.
2208 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
2209 int (*cb) (SSL *s, unsigned char **out,
2210 unsigned char *outlen,
2211 const unsigned char *in,
2213 void *arg), void *arg)
2215 ctx->next_proto_select_cb = cb;
2216 ctx->next_proto_select_cb_arg = arg;
2221 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2222 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2223 * length-prefixed strings). Returns 0 on success.
2225 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2226 unsigned int protos_len)
2228 OPENSSL_free(ctx->alpn_client_proto_list);
2229 ctx->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2230 if (ctx->alpn_client_proto_list == NULL) {
2231 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2234 ctx->alpn_client_proto_list_len = protos_len;
2240 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2241 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2242 * length-prefixed strings). Returns 0 on success.
2244 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2245 unsigned int protos_len)
2247 OPENSSL_free(ssl->alpn_client_proto_list);
2248 ssl->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2249 if (ssl->alpn_client_proto_list == NULL) {
2250 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2253 ssl->alpn_client_proto_list_len = protos_len;
2259 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2260 * called during ClientHello processing in order to select an ALPN protocol
2261 * from the client's list of offered protocols.
2263 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2264 int (*cb) (SSL *ssl,
2265 const unsigned char **out,
2266 unsigned char *outlen,
2267 const unsigned char *in,
2269 void *arg), void *arg)
2271 ctx->alpn_select_cb = cb;
2272 ctx->alpn_select_cb_arg = arg;
2276 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2277 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2278 * (not including the leading length-prefix byte). If the server didn't
2279 * respond with a negotiated protocol then |*len| will be zero.
2281 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2286 *data = ssl->s3->alpn_selected;
2290 *len = ssl->s3->alpn_selected_len;
2293 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2294 const char *label, size_t llen,
2295 const unsigned char *p, size_t plen,
2298 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2301 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2306 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2311 ((unsigned int)a->session_id[0]) |
2312 ((unsigned int)a->session_id[1] << 8L) |
2313 ((unsigned long)a->session_id[2] << 16L) |
2314 ((unsigned long)a->session_id[3] << 24L);
2319 * NB: If this function (or indeed the hash function which uses a sort of
2320 * coarser function than this one) is changed, ensure
2321 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2322 * being able to construct an SSL_SESSION that will collide with any existing
2323 * session with a matching session ID.
2325 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2327 if (a->ssl_version != b->ssl_version)
2329 if (a->session_id_length != b->session_id_length)
2331 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2335 * These wrapper functions should remain rather than redeclaring
2336 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2337 * variable. The reason is that the functions aren't static, they're exposed
2341 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2343 SSL_CTX *ret = NULL;
2346 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2350 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2353 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
2354 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE);
2358 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2359 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2362 ret = OPENSSL_zalloc(sizeof(*ret));
2367 ret->min_proto_version = 0;
2368 ret->max_proto_version = 0;
2369 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2370 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2371 /* We take the system default. */
2372 ret->session_timeout = meth->get_timeout();
2373 ret->references = 1;
2374 ret->lock = CRYPTO_THREAD_lock_new();
2375 if (ret->lock == NULL) {
2376 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2380 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2381 ret->verify_mode = SSL_VERIFY_NONE;
2382 if ((ret->cert = ssl_cert_new()) == NULL)
2385 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2386 if (ret->sessions == NULL)
2388 ret->cert_store = X509_STORE_new();
2389 if (ret->cert_store == NULL)
2391 #ifndef OPENSSL_NO_CT
2392 ret->ctlog_store = CTLOG_STORE_new();
2393 if (ret->ctlog_store == NULL)
2396 if (!ssl_create_cipher_list(ret->method,
2397 &ret->cipher_list, &ret->cipher_list_by_id,
2398 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2399 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2400 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2404 ret->param = X509_VERIFY_PARAM_new();
2405 if (ret->param == NULL)
2408 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2409 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2412 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2413 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2417 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
2420 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2423 /* No compression for DTLS */
2424 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2425 ret->comp_methods = SSL_COMP_get_compression_methods();
2427 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2428 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2430 /* Setup RFC5077 ticket keys */
2431 if ((RAND_bytes(ret->tlsext_tick_key_name,
2432 sizeof(ret->tlsext_tick_key_name)) <= 0)
2433 || (RAND_bytes(ret->tlsext_tick_hmac_key,
2434 sizeof(ret->tlsext_tick_hmac_key)) <= 0)
2435 || (RAND_bytes(ret->tlsext_tick_aes_key,
2436 sizeof(ret->tlsext_tick_aes_key)) <= 0))
2437 ret->options |= SSL_OP_NO_TICKET;
2439 #ifndef OPENSSL_NO_SRP
2440 if (!SSL_CTX_SRP_CTX_init(ret))
2443 #ifndef OPENSSL_NO_ENGINE
2444 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2445 # define eng_strx(x) #x
2446 # define eng_str(x) eng_strx(x)
2447 /* Use specific client engine automatically... ignore errors */
2450 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2453 ENGINE_load_builtin_engines();
2454 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2456 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2462 * Default is to connect to non-RI servers. When RI is more widely
2463 * deployed might change this.
2465 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2467 * Disable compression by default to prevent CRIME. Applications can
2468 * re-enable compression by configuring
2469 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2470 * or by using the SSL_CONF library.
2472 ret->options |= SSL_OP_NO_COMPRESSION;
2474 ret->tlsext_status_type = -1;
2478 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2484 int SSL_CTX_up_ref(SSL_CTX *ctx)
2488 if (CRYPTO_atomic_add(&ctx->references, 1, &i, ctx->lock) <= 0)
2491 REF_PRINT_COUNT("SSL_CTX", ctx);
2492 REF_ASSERT_ISNT(i < 2);
2493 return ((i > 1) ? 1 : 0);
2496 void SSL_CTX_free(SSL_CTX *a)
2503 CRYPTO_atomic_add(&a->references, -1, &i, a->lock);
2504 REF_PRINT_COUNT("SSL_CTX", a);
2507 REF_ASSERT_ISNT(i < 0);
2509 X509_VERIFY_PARAM_free(a->param);
2510 dane_ctx_final(&a->dane);
2513 * Free internal session cache. However: the remove_cb() may reference
2514 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2515 * after the sessions were flushed.
2516 * As the ex_data handling routines might also touch the session cache,
2517 * the most secure solution seems to be: empty (flush) the cache, then
2518 * free ex_data, then finally free the cache.
2519 * (See ticket [openssl.org #212].)
2521 if (a->sessions != NULL)
2522 SSL_CTX_flush_sessions(a, 0);
2524 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2525 lh_SSL_SESSION_free(a->sessions);
2526 X509_STORE_free(a->cert_store);
2527 #ifndef OPENSSL_NO_CT
2528 CTLOG_STORE_free(a->ctlog_store);
2530 sk_SSL_CIPHER_free(a->cipher_list);
2531 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2532 ssl_cert_free(a->cert);
2533 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2534 sk_X509_pop_free(a->extra_certs, X509_free);
2535 a->comp_methods = NULL;
2536 #ifndef OPENSSL_NO_SRTP
2537 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2539 #ifndef OPENSSL_NO_SRP
2540 SSL_CTX_SRP_CTX_free(a);
2542 #ifndef OPENSSL_NO_ENGINE
2543 ENGINE_finish(a->client_cert_engine);
2546 #ifndef OPENSSL_NO_EC
2547 OPENSSL_free(a->tlsext_ecpointformatlist);
2548 OPENSSL_free(a->tlsext_ellipticcurvelist);
2550 OPENSSL_free(a->alpn_client_proto_list);
2552 CRYPTO_THREAD_lock_free(a->lock);
2557 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2559 ctx->default_passwd_callback = cb;
2562 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2564 ctx->default_passwd_callback_userdata = u;
2567 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2569 return ctx->default_passwd_callback;
2572 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2574 return ctx->default_passwd_callback_userdata;
2577 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2579 s->default_passwd_callback = cb;
2582 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2584 s->default_passwd_callback_userdata = u;
2587 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2589 return s->default_passwd_callback;
2592 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2594 return s->default_passwd_callback_userdata;
2597 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2598 int (*cb) (X509_STORE_CTX *, void *),
2601 ctx->app_verify_callback = cb;
2602 ctx->app_verify_arg = arg;
2605 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2606 int (*cb) (int, X509_STORE_CTX *))
2608 ctx->verify_mode = mode;
2609 ctx->default_verify_callback = cb;
2612 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2614 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2617 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
2619 ssl_cert_set_cert_cb(c->cert, cb, arg);
2622 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2624 ssl_cert_set_cert_cb(s->cert, cb, arg);
2627 void ssl_set_masks(SSL *s)
2629 #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST)
2633 uint32_t *pvalid = s->s3->tmp.valid_flags;
2634 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
2635 unsigned long mask_k, mask_a;
2636 #ifndef OPENSSL_NO_EC
2637 int have_ecc_cert, ecdsa_ok;
2643 #ifndef OPENSSL_NO_DH
2644 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2649 rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
2650 rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
2651 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
2652 #ifndef OPENSSL_NO_EC
2653 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2659 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
2660 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
2663 #ifndef OPENSSL_NO_GOST
2664 cpk = &(c->pkeys[SSL_PKEY_GOST12_512]);
2665 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2666 mask_k |= SSL_kGOST;
2667 mask_a |= SSL_aGOST12;
2669 cpk = &(c->pkeys[SSL_PKEY_GOST12_256]);
2670 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2671 mask_k |= SSL_kGOST;
2672 mask_a |= SSL_aGOST12;
2674 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2675 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2676 mask_k |= SSL_kGOST;
2677 mask_a |= SSL_aGOST01;
2687 if (rsa_enc || rsa_sign) {
2695 mask_a |= SSL_aNULL;
2698 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2699 * depending on the key usage extension.
2701 #ifndef OPENSSL_NO_EC
2702 if (have_ecc_cert) {
2704 cpk = &c->pkeys[SSL_PKEY_ECC];
2706 ex_kusage = X509_get_key_usage(x);
2707 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2708 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2711 mask_a |= SSL_aECDSA;
2715 #ifndef OPENSSL_NO_EC
2716 mask_k |= SSL_kECDHE;
2719 #ifndef OPENSSL_NO_PSK
2722 if (mask_k & SSL_kRSA)
2723 mask_k |= SSL_kRSAPSK;
2724 if (mask_k & SSL_kDHE)
2725 mask_k |= SSL_kDHEPSK;
2726 if (mask_k & SSL_kECDHE)
2727 mask_k |= SSL_kECDHEPSK;
2730 s->s3->tmp.mask_k = mask_k;
2731 s->s3->tmp.mask_a = mask_a;
2734 #ifndef OPENSSL_NO_EC
2736 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2738 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
2739 /* key usage, if present, must allow signing */
2740 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
2741 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2742 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2746 return 1; /* all checks are ok */
2751 static int ssl_get_server_cert_index(const SSL *s)
2754 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2755 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2756 idx = SSL_PKEY_RSA_SIGN;
2757 if (idx == SSL_PKEY_GOST_EC) {
2758 if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)
2759 idx = SSL_PKEY_GOST12_512;
2760 else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509)
2761 idx = SSL_PKEY_GOST12_256;
2762 else if (s->cert->pkeys[SSL_PKEY_GOST01].x509)
2763 idx = SSL_PKEY_GOST01;
2768 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2772 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2778 if (!s->s3 || !s->s3->tmp.new_cipher)
2782 i = ssl_get_server_cert_index(s);
2784 /* This may or may not be an error. */
2789 return &c->pkeys[i];
2792 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2795 unsigned long alg_a;
2799 alg_a = cipher->algorithm_auth;
2802 if ((alg_a & SSL_aDSS) && (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2803 idx = SSL_PKEY_DSA_SIGN;
2804 else if (alg_a & SSL_aRSA) {
2805 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2806 idx = SSL_PKEY_RSA_SIGN;
2807 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2808 idx = SSL_PKEY_RSA_ENC;
2809 } else if ((alg_a & SSL_aECDSA) &&
2810 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2813 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2817 *pmd = s->s3->tmp.md[idx];
2818 return c->pkeys[idx].privatekey;
2821 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2822 size_t *serverinfo_length)
2826 *serverinfo_length = 0;
2829 i = ssl_get_server_cert_index(s);
2833 if (c->pkeys[i].serverinfo == NULL)
2836 *serverinfo = c->pkeys[i].serverinfo;
2837 *serverinfo_length = c->pkeys[i].serverinfo_length;
2841 void ssl_update_cache(SSL *s, int mode)
2846 * If the session_id_length is 0, we are not supposed to cache it, and it
2847 * would be rather hard to do anyway :-)
2849 if (s->session->session_id_length == 0)
2852 i = s->session_ctx->session_cache_mode;
2853 if ((i & mode) && (!s->hit)
2854 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2855 || SSL_CTX_add_session(s->session_ctx, s->session))
2856 && (s->session_ctx->new_session_cb != NULL)) {
2857 SSL_SESSION_up_ref(s->session);
2858 if (!s->session_ctx->new_session_cb(s, s->session))
2859 SSL_SESSION_free(s->session);
2862 /* auto flush every 255 connections */
2863 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2864 if ((((mode & SSL_SESS_CACHE_CLIENT)
2865 ? s->session_ctx->stats.sess_connect_good
2866 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2867 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2872 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2877 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2882 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2886 if (s->method != meth) {
2887 const SSL_METHOD *sm = s->method;
2888 int (*hf) (SSL *) = s->handshake_func;
2890 if (sm->version == meth->version)
2895 ret = s->method->ssl_new(s);
2898 if (hf == sm->ssl_connect)
2899 s->handshake_func = meth->ssl_connect;
2900 else if (hf == sm->ssl_accept)
2901 s->handshake_func = meth->ssl_accept;
2906 int SSL_get_error(const SSL *s, int i)
2913 return (SSL_ERROR_NONE);
2916 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2917 * where we do encode the error
2919 if ((l = ERR_peek_error()) != 0) {
2920 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2921 return (SSL_ERROR_SYSCALL);
2923 return (SSL_ERROR_SSL);
2927 if (SSL_want_read(s)) {
2928 bio = SSL_get_rbio(s);
2929 if (BIO_should_read(bio))
2930 return (SSL_ERROR_WANT_READ);
2931 else if (BIO_should_write(bio))
2933 * This one doesn't make too much sense ... We never try to write
2934 * to the rbio, and an application program where rbio and wbio
2935 * are separate couldn't even know what it should wait for.
2936 * However if we ever set s->rwstate incorrectly (so that we have
2937 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2938 * wbio *are* the same, this test works around that bug; so it
2939 * might be safer to keep it.
2941 return (SSL_ERROR_WANT_WRITE);
2942 else if (BIO_should_io_special(bio)) {
2943 reason = BIO_get_retry_reason(bio);
2944 if (reason == BIO_RR_CONNECT)
2945 return (SSL_ERROR_WANT_CONNECT);
2946 else if (reason == BIO_RR_ACCEPT)
2947 return (SSL_ERROR_WANT_ACCEPT);
2949 return (SSL_ERROR_SYSCALL); /* unknown */
2953 if (SSL_want_write(s)) {
2955 * Access wbio directly - in order to use the buffered bio if
2959 if (BIO_should_write(bio))
2960 return (SSL_ERROR_WANT_WRITE);
2961 else if (BIO_should_read(bio))
2963 * See above (SSL_want_read(s) with BIO_should_write(bio))
2965 return (SSL_ERROR_WANT_READ);
2966 else if (BIO_should_io_special(bio)) {
2967 reason = BIO_get_retry_reason(bio);
2968 if (reason == BIO_RR_CONNECT)
2969 return (SSL_ERROR_WANT_CONNECT);
2970 else if (reason == BIO_RR_ACCEPT)
2971 return (SSL_ERROR_WANT_ACCEPT);
2973 return (SSL_ERROR_SYSCALL);
2976 if (SSL_want_x509_lookup(s)) {
2977 return (SSL_ERROR_WANT_X509_LOOKUP);
2979 if (SSL_want_async(s)) {
2980 return SSL_ERROR_WANT_ASYNC;
2982 if (SSL_want_async_job(s)) {
2983 return SSL_ERROR_WANT_ASYNC_JOB;
2988 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2989 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2990 return (SSL_ERROR_ZERO_RETURN);
2992 return (SSL_ERROR_SYSCALL);
2995 static int ssl_do_handshake_intern(void *vargs)
2997 struct ssl_async_args *args;
3000 args = (struct ssl_async_args *)vargs;
3003 return s->handshake_func(s);
3006 int SSL_do_handshake(SSL *s)
3010 if (s->handshake_func == NULL) {
3011 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3015 s->method->ssl_renegotiate_check(s);
3017 if (SSL_in_init(s) || SSL_in_before(s)) {
3018 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3019 struct ssl_async_args args;
3023 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3025 ret = s->handshake_func(s);
3031 void SSL_set_accept_state(SSL *s)
3035 ossl_statem_clear(s);
3036 s->handshake_func = s->method->ssl_accept;
3040 void SSL_set_connect_state(SSL *s)
3044 ossl_statem_clear(s);
3045 s->handshake_func = s->method->ssl_connect;
3049 int ssl_undefined_function(SSL *s)
3051 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3055 int ssl_undefined_void_function(void)
3057 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3058 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3062 int ssl_undefined_const_function(const SSL *s)
3067 const SSL_METHOD *ssl_bad_method(int ver)
3069 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3073 const char *ssl_protocol_to_string(int version)
3075 if (version == TLS1_2_VERSION)
3077 else if (version == TLS1_1_VERSION)
3079 else if (version == TLS1_VERSION)
3081 else if (version == SSL3_VERSION)
3083 else if (version == DTLS1_BAD_VER)
3085 else if (version == DTLS1_VERSION)
3087 else if (version == DTLS1_2_VERSION)
3093 const char *SSL_get_version(const SSL *s)
3095 return ssl_protocol_to_string(s->version);
3098 SSL *SSL_dup(SSL *s)
3100 STACK_OF(X509_NAME) *sk;
3105 /* If we're not quiescent, just up_ref! */
3106 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3107 CRYPTO_atomic_add(&s->references, 1, &i, s->lock);
3112 * Otherwise, copy configuration state, and session if set.
3114 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3117 if (s->session != NULL) {
3119 * Arranges to share the same session via up_ref. This "copies"
3120 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3122 if (!SSL_copy_session_id(ret, s))
3126 * No session has been established yet, so we have to expect that
3127 * s->cert or ret->cert will be changed later -- they should not both
3128 * point to the same object, and thus we can't use
3129 * SSL_copy_session_id.
3131 if (!SSL_set_ssl_method(ret, s->method))
3134 if (s->cert != NULL) {
3135 ssl_cert_free(ret->cert);
3136 ret->cert = ssl_cert_dup(s->cert);
3137 if (ret->cert == NULL)
3141 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
3145 if (!ssl_dane_dup(ret, s))
3147 ret->version = s->version;
3148 ret->options = s->options;
3149 ret->mode = s->mode;
3150 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3151 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3152 ret->msg_callback = s->msg_callback;
3153 ret->msg_callback_arg = s->msg_callback_arg;
3154 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3155 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3156 ret->generate_session_id = s->generate_session_id;
3158 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3160 /* copy app data, a little dangerous perhaps */
3161 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3164 /* setup rbio, and wbio */
3165 if (s->rbio != NULL) {
3166 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3169 if (s->wbio != NULL) {
3170 if (s->wbio != s->rbio) {
3171 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3174 BIO_up_ref(ret->rbio);
3175 ret->wbio = ret->rbio;
3179 ret->server = s->server;
3180 if (s->handshake_func) {
3182 SSL_set_accept_state(ret);
3184 SSL_set_connect_state(ret);
3186 ret->shutdown = s->shutdown;
3189 ret->default_passwd_callback = s->default_passwd_callback;
3190 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3192 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3194 /* dup the cipher_list and cipher_list_by_id stacks */
3195 if (s->cipher_list != NULL) {
3196 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3199 if (s->cipher_list_by_id != NULL)
3200 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3204 /* Dup the client_CA list */
3205 if (s->client_CA != NULL) {
3206 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
3208 ret->client_CA = sk;
3209 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3210 xn = sk_X509_NAME_value(sk, i);
3211 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3224 void ssl_clear_cipher_ctx(SSL *s)
3226 if (s->enc_read_ctx != NULL) {
3227 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3228 s->enc_read_ctx = NULL;
3230 if (s->enc_write_ctx != NULL) {
3231 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3232 s->enc_write_ctx = NULL;
3234 #ifndef OPENSSL_NO_COMP
3235 COMP_CTX_free(s->expand);
3237 COMP_CTX_free(s->compress);
3242 X509 *SSL_get_certificate(const SSL *s)
3244 if (s->cert != NULL)
3245 return (s->cert->key->x509);
3250 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3252 if (s->cert != NULL)
3253 return (s->cert->key->privatekey);
3258 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3260 if (ctx->cert != NULL)
3261 return ctx->cert->key->x509;
3266 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3268 if (ctx->cert != NULL)
3269 return ctx->cert->key->privatekey;
3274 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3276 if ((s->session != NULL) && (s->session->cipher != NULL))
3277 return (s->session->cipher);
3281 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3283 #ifndef OPENSSL_NO_COMP
3284 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3290 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3292 #ifndef OPENSSL_NO_COMP
3293 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3299 int ssl_init_wbio_buffer(SSL *s)
3303 if (s->bbio != NULL) {
3304 /* Already buffered. */
3308 bbio = BIO_new(BIO_f_buffer());
3309 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3311 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3315 s->wbio = BIO_push(bbio, s->wbio);
3320 void ssl_free_wbio_buffer(SSL *s)
3322 /* callers ensure s is never null */
3323 if (s->bbio == NULL)
3326 s->wbio = BIO_pop(s->wbio);
3327 assert(s->wbio != NULL);
3332 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3334 ctx->quiet_shutdown = mode;
3337 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3339 return (ctx->quiet_shutdown);
3342 void SSL_set_quiet_shutdown(SSL *s, int mode)
3344 s->quiet_shutdown = mode;
3347 int SSL_get_quiet_shutdown(const SSL *s)
3349 return (s->quiet_shutdown);
3352 void SSL_set_shutdown(SSL *s, int mode)
3357 int SSL_get_shutdown(const SSL *s)
3362 int SSL_version(const SSL *s)
3367 int SSL_client_version(const SSL *s)
3369 return s->client_version;
3372 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3377 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3380 if (ssl->ctx == ctx)
3383 ctx = ssl->initial_ctx;
3384 new_cert = ssl_cert_dup(ctx->cert);
3385 if (new_cert == NULL) {
3388 ssl_cert_free(ssl->cert);
3389 ssl->cert = new_cert;
3392 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3393 * so setter APIs must prevent invalid lengths from entering the system.
3395 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3398 * If the session ID context matches that of the parent SSL_CTX,
3399 * inherit it from the new SSL_CTX as well. If however the context does
3400 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3401 * leave it unchanged.
3403 if ((ssl->ctx != NULL) &&
3404 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3405 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3406 ssl->sid_ctx_length = ctx->sid_ctx_length;
3407 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3410 SSL_CTX_up_ref(ctx);
3411 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3417 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3419 return (X509_STORE_set_default_paths(ctx->cert_store));
3422 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3424 X509_LOOKUP *lookup;
3426 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3429 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3431 /* Clear any errors if the default directory does not exist */
3437 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3439 X509_LOOKUP *lookup;
3441 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3445 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3447 /* Clear any errors if the default file does not exist */
3453 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3456 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3459 void SSL_set_info_callback(SSL *ssl,
3460 void (*cb) (const SSL *ssl, int type, int val))
3462 ssl->info_callback = cb;
3466 * One compiler (Diab DCC) doesn't like argument names in returned function
3469 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3472 return ssl->info_callback;
3475 void SSL_set_verify_result(SSL *ssl, long arg)
3477 ssl->verify_result = arg;
3480 long SSL_get_verify_result(const SSL *ssl)
3482 return (ssl->verify_result);
3485 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3488 return sizeof(ssl->s3->client_random);
3489 if (outlen > sizeof(ssl->s3->client_random))
3490 outlen = sizeof(ssl->s3->client_random);
3491 memcpy(out, ssl->s3->client_random, outlen);
3495 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3498 return sizeof(ssl->s3->server_random);
3499 if (outlen > sizeof(ssl->s3->server_random))
3500 outlen = sizeof(ssl->s3->server_random);
3501 memcpy(out, ssl->s3->server_random, outlen);
3505 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3506 unsigned char *out, size_t outlen)
3508 if (session->master_key_length < 0) {
3509 /* Should never happen */
3513 return session->master_key_length;
3514 if (outlen > (size_t)session->master_key_length)
3515 outlen = session->master_key_length;
3516 memcpy(out, session->master_key, outlen);
3520 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3522 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3525 void *SSL_get_ex_data(const SSL *s, int idx)
3527 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3530 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3532 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3535 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3537 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3545 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3547 return (ctx->cert_store);
3550 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3552 X509_STORE_free(ctx->cert_store);
3553 ctx->cert_store = store;
3556 int SSL_want(const SSL *s)
3558 return (s->rwstate);
3562 * \brief Set the callback for generating temporary DH keys.
3563 * \param ctx the SSL context.
3564 * \param dh the callback
3567 #ifndef OPENSSL_NO_DH
3568 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3569 DH *(*dh) (SSL *ssl, int is_export,
3572 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3575 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3578 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3582 #ifndef OPENSSL_NO_PSK
3583 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3585 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3586 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3589 OPENSSL_free(ctx->cert->psk_identity_hint);
3590 if (identity_hint != NULL) {
3591 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3592 if (ctx->cert->psk_identity_hint == NULL)
3595 ctx->cert->psk_identity_hint = NULL;
3599 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3604 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3605 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3608 OPENSSL_free(s->cert->psk_identity_hint);
3609 if (identity_hint != NULL) {
3610 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3611 if (s->cert->psk_identity_hint == NULL)
3614 s->cert->psk_identity_hint = NULL;
3618 const char *SSL_get_psk_identity_hint(const SSL *s)
3620 if (s == NULL || s->session == NULL)
3622 return (s->session->psk_identity_hint);
3625 const char *SSL_get_psk_identity(const SSL *s)
3627 if (s == NULL || s->session == NULL)
3629 return (s->session->psk_identity);
3632 void SSL_set_psk_client_callback(SSL *s,
3633 unsigned int (*cb) (SSL *ssl,
3639 unsigned int max_psk_len))
3641 s->psk_client_callback = cb;
3644 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3645 unsigned int (*cb) (SSL *ssl,
3654 ctx->psk_client_callback = cb;
3657 void SSL_set_psk_server_callback(SSL *s,
3658 unsigned int (*cb) (SSL *ssl,
3659 const char *identity,
3661 unsigned int max_psk_len))
3663 s->psk_server_callback = cb;
3666 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3667 unsigned int (*cb) (SSL *ssl,
3668 const char *identity,
3673 ctx->psk_server_callback = cb;
3677 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3678 void (*cb) (int write_p, int version,
3679 int content_type, const void *buf,
3680 size_t len, SSL *ssl, void *arg))
3682 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3685 void SSL_set_msg_callback(SSL *ssl,
3686 void (*cb) (int write_p, int version,
3687 int content_type, const void *buf,
3688 size_t len, SSL *ssl, void *arg))
3690 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3693 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3694 int (*cb) (SSL *ssl,
3698 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3699 (void (*)(void))cb);
3702 void SSL_set_not_resumable_session_callback(SSL *ssl,
3703 int (*cb) (SSL *ssl,
3704 int is_forward_secure))
3706 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3707 (void (*)(void))cb);
3711 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3712 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3713 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3717 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3719 ssl_clear_hash_ctx(hash);
3720 *hash = EVP_MD_CTX_new();
3721 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3722 EVP_MD_CTX_free(*hash);
3729 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3733 EVP_MD_CTX_free(*hash);
3737 /* Retrieve handshake hashes */
3738 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3740 EVP_MD_CTX *ctx = NULL;
3741 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
3742 int ret = EVP_MD_CTX_size(hdgst);
3743 if (ret < 0 || ret > outlen) {
3747 ctx = EVP_MD_CTX_new();
3752 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
3753 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
3756 EVP_MD_CTX_free(ctx);
3760 int SSL_session_reused(SSL *s)
3765 int SSL_is_server(SSL *s)
3770 #if OPENSSL_API_COMPAT < 0x10100000L
3771 void SSL_set_debug(SSL *s, int debug)
3773 /* Old function was do-nothing anyway... */
3779 void SSL_set_security_level(SSL *s, int level)
3781 s->cert->sec_level = level;
3784 int SSL_get_security_level(const SSL *s)
3786 return s->cert->sec_level;
3789 void SSL_set_security_callback(SSL *s,
3790 int (*cb) (const SSL *s, const SSL_CTX *ctx,
3791 int op, int bits, int nid,
3792 void *other, void *ex))
3794 s->cert->sec_cb = cb;
3797 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
3798 const SSL_CTX *ctx, int op,
3799 int bits, int nid, void *other,
3801 return s->cert->sec_cb;
3804 void SSL_set0_security_ex_data(SSL *s, void *ex)
3806 s->cert->sec_ex = ex;
3809 void *SSL_get0_security_ex_data(const SSL *s)
3811 return s->cert->sec_ex;
3814 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3816 ctx->cert->sec_level = level;
3819 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3821 return ctx->cert->sec_level;
3824 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3825 int (*cb) (const SSL *s, const SSL_CTX *ctx,
3826 int op, int bits, int nid,
3827 void *other, void *ex))
3829 ctx->cert->sec_cb = cb;
3832 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
3838 return ctx->cert->sec_cb;
3841 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3843 ctx->cert->sec_ex = ex;
3846 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3848 return ctx->cert->sec_ex;
3852 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3853 * can return unsigned long, instead of the generic long return value from the
3854 * control interface.
3856 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
3858 return ctx->options;
3861 unsigned long SSL_get_options(const SSL *s)
3866 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
3868 return ctx->options |= op;
3871 unsigned long SSL_set_options(SSL *s, unsigned long op)
3873 return s->options |= op;
3876 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
3878 return ctx->options &= ~op;
3881 unsigned long SSL_clear_options(SSL *s, unsigned long op)
3883 return s->options &= ~op;
3886 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
3888 return s->verified_chain;
3891 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
3893 #ifndef OPENSSL_NO_CT
3896 * Moves SCTs from the |src| stack to the |dst| stack.
3897 * The source of each SCT will be set to |origin|.
3898 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3900 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3902 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
3903 sct_source_t origin)
3909 *dst = sk_SCT_new_null();
3911 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
3916 while ((sct = sk_SCT_pop(src)) != NULL) {
3917 if (SCT_set_source(sct, origin) != 1)
3920 if (sk_SCT_push(*dst, sct) <= 0)
3928 sk_SCT_push(src, sct); /* Put the SCT back */
3933 * Look for data collected during ServerHello and parse if found.
3934 * Returns the number of SCTs extracted.
3936 static int ct_extract_tls_extension_scts(SSL *s)
3938 int scts_extracted = 0;
3940 if (s->tlsext_scts != NULL) {
3941 const unsigned char *p = s->tlsext_scts;
3942 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->tlsext_scts_len);
3944 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
3946 SCT_LIST_free(scts);
3949 return scts_extracted;
3953 * Checks for an OCSP response and then attempts to extract any SCTs found if it
3954 * contains an SCT X509 extension. They will be stored in |s->scts|.
3956 * - The number of SCTs extracted, assuming an OCSP response exists.
3957 * - 0 if no OCSP response exists or it contains no SCTs.
3958 * - A negative integer if an error occurs.
3960 static int ct_extract_ocsp_response_scts(SSL *s)
3962 # ifndef OPENSSL_NO_OCSP
3963 int scts_extracted = 0;
3964 const unsigned char *p;
3965 OCSP_BASICRESP *br = NULL;
3966 OCSP_RESPONSE *rsp = NULL;
3967 STACK_OF(SCT) *scts = NULL;
3970 if (s->tlsext_ocsp_resp == NULL || s->tlsext_ocsp_resplen == 0)
3973 p = s->tlsext_ocsp_resp;
3974 rsp = d2i_OCSP_RESPONSE(NULL, &p, s->tlsext_ocsp_resplen);
3978 br = OCSP_response_get1_basic(rsp);
3982 for (i = 0; i < OCSP_resp_count(br); ++i) {
3983 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
3989 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
3991 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
3992 if (scts_extracted < 0)
3996 SCT_LIST_free(scts);
3997 OCSP_BASICRESP_free(br);
3998 OCSP_RESPONSE_free(rsp);
3999 return scts_extracted;
4001 /* Behave as if no OCSP response exists */
4007 * Attempts to extract SCTs from the peer certificate.
4008 * Return the number of SCTs extracted, or a negative integer if an error
4011 static int ct_extract_x509v3_extension_scts(SSL *s)
4013 int scts_extracted = 0;
4014 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4017 STACK_OF(SCT) *scts =
4018 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4021 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4023 SCT_LIST_free(scts);
4026 return scts_extracted;
4030 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4031 * response (if it exists) and X509v3 extensions in the certificate.
4032 * Returns NULL if an error occurs.
4034 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4036 if (!s->scts_parsed) {
4037 if (ct_extract_tls_extension_scts(s) < 0 ||
4038 ct_extract_ocsp_response_scts(s) < 0 ||
4039 ct_extract_x509v3_extension_scts(s) < 0)
4049 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4050 const STACK_OF(SCT) *scts, void *unused_arg)
4055 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4056 const STACK_OF(SCT) *scts, void *unused_arg)
4058 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4061 for (i = 0; i < count; ++i) {
4062 SCT *sct = sk_SCT_value(scts, i);
4063 int status = SCT_get_validation_status(sct);
4065 if (status == SCT_VALIDATION_STATUS_VALID)
4068 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4072 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4076 * Since code exists that uses the custom extension handler for CT, look
4077 * for this and throw an error if they have already registered to use CT.
4079 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4080 TLSEXT_TYPE_signed_certificate_timestamp))
4082 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4083 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4087 if (callback != NULL) {
4089 * If we are validating CT, then we MUST accept SCTs served via OCSP
4091 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4095 s->ct_validation_callback = callback;
4096 s->ct_validation_callback_arg = arg;
4101 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4102 ssl_ct_validation_cb callback, void *arg)
4105 * Since code exists that uses the custom extension handler for CT, look for
4106 * this and throw an error if they have already registered to use CT.
4108 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4109 TLSEXT_TYPE_signed_certificate_timestamp))
4111 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4112 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4116 ctx->ct_validation_callback = callback;
4117 ctx->ct_validation_callback_arg = arg;
4121 int SSL_ct_is_enabled(const SSL *s)
4123 return s->ct_validation_callback != NULL;
4126 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4128 return ctx->ct_validation_callback != NULL;
4131 int ssl_validate_ct(SSL *s)
4134 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4136 SSL_DANE *dane = &s->dane;
4137 CT_POLICY_EVAL_CTX *ctx = NULL;
4138 const STACK_OF(SCT) *scts;
4141 * If no callback is set, the peer is anonymous, or its chain is invalid,
4142 * skip SCT validation - just return success. Applications that continue
4143 * handshakes without certificates, with unverified chains, or pinned leaf
4144 * certificates are outside the scope of the WebPKI and CT.
4146 * The above exclusions notwithstanding the vast majority of peers will
4147 * have rather ordinary certificate chains validated by typical
4148 * applications that perform certificate verification and therefore will
4149 * process SCTs when enabled.
4151 if (s->ct_validation_callback == NULL || cert == NULL ||
4152 s->verify_result != X509_V_OK ||
4153 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4157 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4158 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4160 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4161 switch (dane->mtlsa->usage) {
4162 case DANETLS_USAGE_DANE_TA:
4163 case DANETLS_USAGE_DANE_EE:
4168 ctx = CT_POLICY_EVAL_CTX_new();
4170 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4174 issuer = sk_X509_value(s->verified_chain, 1);
4175 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4176 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4177 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4179 scts = SSL_get0_peer_scts(s);
4182 * This function returns success (> 0) only when all the SCTs are valid, 0
4183 * when some are invalid, and < 0 on various internal errors (out of
4184 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4185 * reason to abort the handshake, that decision is up to the callback.
4186 * Therefore, we error out only in the unexpected case that the return
4187 * value is negative.
4189 * XXX: One might well argue that the return value of this function is an
4190 * unfortunate design choice. Its job is only to determine the validation
4191 * status of each of the provided SCTs. So long as it correctly separates
4192 * the wheat from the chaff it should return success. Failure in this case
4193 * ought to correspond to an inability to carry out its duties.
4195 if (SCT_LIST_validate(scts, ctx) < 0) {
4196 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4200 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4202 ret = 0; /* This function returns 0 on failure */
4205 CT_POLICY_EVAL_CTX_free(ctx);
4207 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4208 * failure return code here. Also the application may wish the complete
4209 * the handshake, and then disconnect cleanly at a higher layer, after
4210 * checking the verification status of the completed connection.
4212 * We therefore force a certificate verification failure which will be
4213 * visible via SSL_get_verify_result() and cached as part of any resumed
4216 * Note: the permissive callback is for information gathering only, always
4217 * returns success, and does not affect verification status. Only the
4218 * strict callback or a custom application-specified callback can trigger
4219 * connection failure or record a verification error.
4222 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4226 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4228 switch (validation_mode) {
4230 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4232 case SSL_CT_VALIDATION_PERMISSIVE:
4233 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4234 case SSL_CT_VALIDATION_STRICT:
4235 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4239 int SSL_enable_ct(SSL *s, int validation_mode)
4241 switch (validation_mode) {
4243 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4245 case SSL_CT_VALIDATION_PERMISSIVE:
4246 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4247 case SSL_CT_VALIDATION_STRICT:
4248 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4252 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4254 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4257 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4259 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4262 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
4264 CTLOG_STORE_free(ctx->ctlog_store);
4265 ctx->ctlog_store = logs;
4268 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4270 return ctx->ctlog_store;