2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* ====================================================================
11 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
12 * ECC cipher suite support in OpenSSL originally developed by
13 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
15 /* ====================================================================
16 * Copyright 2005 Nokia. All rights reserved.
18 * The portions of the attached software ("Contribution") is developed by
19 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
22 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
23 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
24 * support (see RFC 4279) to OpenSSL.
26 * No patent licenses or other rights except those expressly stated in
27 * the OpenSSL open source license shall be deemed granted or received
28 * expressly, by implication, estoppel, or otherwise.
30 * No assurances are provided by Nokia that the Contribution does not
31 * infringe the patent or other intellectual property rights of any third
32 * party or that the license provides you with all the necessary rights
33 * to make use of the Contribution.
35 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
36 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
37 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
38 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
45 #include <openssl/objects.h>
46 #include <openssl/lhash.h>
47 #include <openssl/x509v3.h>
48 #include <openssl/rand.h>
49 #include <openssl/ocsp.h>
50 #include <openssl/dh.h>
51 #include <openssl/engine.h>
52 #include <openssl/async.h>
53 #include <openssl/ct.h>
55 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
57 SSL3_ENC_METHOD ssl3_undef_enc_method = {
59 * evil casts, but these functions are only called if there's a library
62 (int (*)(SSL *, SSL3_RECORD *, unsigned int, int))ssl_undefined_function,
63 (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function,
64 ssl_undefined_function,
65 (int (*)(SSL *, unsigned char *, unsigned char *, int))
66 ssl_undefined_function,
67 (int (*)(SSL *, int))ssl_undefined_function,
68 (int (*)(SSL *, const char *, int, unsigned char *))
69 ssl_undefined_function,
70 0, /* finish_mac_length */
71 NULL, /* client_finished_label */
72 0, /* client_finished_label_len */
73 NULL, /* server_finished_label */
74 0, /* server_finished_label_len */
75 (int (*)(int))ssl_undefined_function,
76 (int (*)(SSL *, unsigned char *, size_t, const char *,
77 size_t, const unsigned char *, size_t,
78 int use_context))ssl_undefined_function,
81 struct ssl_async_args {
85 enum { READFUNC, WRITEFUNC, OTHERFUNC} type;
87 int (*func_read)(SSL *, void *, int);
88 int (*func_write)(SSL *, const void *, int);
89 int (*func_other)(SSL *);
98 { DANETLS_MATCHING_FULL, 0, NID_undef },
99 { DANETLS_MATCHING_2256, 1, NID_sha256 },
100 { DANETLS_MATCHING_2512, 2, NID_sha512 },
103 static int dane_ctx_enable(struct dane_ctx_st *dctx)
105 const EVP_MD **mdevp;
107 uint8_t mdmax = DANETLS_MATCHING_LAST;
108 int n = ((int) mdmax) + 1; /* int to handle PrivMatch(255) */
111 if (dctx->mdevp != NULL)
114 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
115 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
117 if (mdord == NULL || mdevp == NULL) {
120 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
124 /* Install default entries */
125 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
128 if (dane_mds[i].nid == NID_undef ||
129 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
131 mdevp[dane_mds[i].mtype] = md;
132 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
142 static void dane_ctx_final(struct dane_ctx_st *dctx)
144 OPENSSL_free(dctx->mdevp);
147 OPENSSL_free(dctx->mdord);
152 static void tlsa_free(danetls_record *t)
156 OPENSSL_free(t->data);
157 EVP_PKEY_free(t->spki);
161 static void dane_final(SSL_DANE *dane)
163 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
166 sk_X509_pop_free(dane->certs, X509_free);
169 X509_free(dane->mcert);
177 * dane_copy - Copy dane configuration, sans verification state.
179 static int ssl_dane_dup(SSL *to, SSL *from)
184 if (!DANETLS_ENABLED(&from->dane))
187 dane_final(&to->dane);
188 to->dane.flags = from->dane.flags;
189 to->dane.dctx = &to->ctx->dane;
190 to->dane.trecs = sk_danetls_record_new_null();
192 if (to->dane.trecs == NULL) {
193 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
197 num = sk_danetls_record_num(from->dane.trecs);
198 for (i = 0; i < num; ++i) {
199 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
201 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
202 t->data, t->dlen) <= 0)
208 static int dane_mtype_set(
209 struct dane_ctx_st *dctx,
216 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
217 SSLerr(SSL_F_DANE_MTYPE_SET,
218 SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
222 if (mtype > dctx->mdmax) {
223 const EVP_MD **mdevp;
225 int n = ((int) mtype) + 1;
227 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
229 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
234 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
236 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
241 /* Zero-fill any gaps */
242 for (i = dctx->mdmax+1; i < mtype; ++i) {
250 dctx->mdevp[mtype] = md;
251 /* Coerce ordinal of disabled matching types to 0 */
252 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
257 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
259 if (mtype > dane->dctx->mdmax)
261 return dane->dctx->mdevp[mtype];
264 static int dane_tlsa_add(
273 const EVP_MD *md = NULL;
274 int ilen = (int)dlen;
278 if (dane->trecs == NULL) {
279 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
283 if (ilen < 0 || dlen != (size_t)ilen) {
284 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
288 if (usage > DANETLS_USAGE_LAST) {
289 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
293 if (selector > DANETLS_SELECTOR_LAST) {
294 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
298 if (mtype != DANETLS_MATCHING_FULL) {
299 md = tlsa_md_get(dane, mtype);
301 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
306 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
307 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
311 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
315 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
316 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
321 t->selector = selector;
323 t->data = OPENSSL_malloc(ilen);
324 if (t->data == NULL) {
326 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
329 memcpy(t->data, data, ilen);
332 /* Validate and cache full certificate or public key */
333 if (mtype == DANETLS_MATCHING_FULL) {
334 const unsigned char *p = data;
336 EVP_PKEY *pkey = NULL;
339 case DANETLS_SELECTOR_CERT:
340 if (!d2i_X509(&cert, &p, dlen) || p < data ||
341 dlen != (size_t)(p - data)) {
343 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
346 if (X509_get0_pubkey(cert) == NULL) {
348 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
352 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
358 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
359 * records that contain full certificates of trust-anchors that are
360 * not present in the wire chain. For usage PKIX-TA(0), we augment
361 * the chain with untrusted Full(0) certificates from DNS, in case
362 * they are missing from the chain.
364 if ((dane->certs == NULL &&
365 (dane->certs = sk_X509_new_null()) == NULL) ||
366 !sk_X509_push(dane->certs, cert)) {
367 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
374 case DANETLS_SELECTOR_SPKI:
375 if (!d2i_PUBKEY(&pkey, &p, dlen) || p < data ||
376 dlen != (size_t)(p - data)) {
378 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
383 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
384 * records that contain full bare keys of trust-anchors that are
385 * not present in the wire chain.
387 if (usage == DANETLS_USAGE_DANE_TA)
396 * Find the right insertion point for the new record.
398 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
399 * they can be processed first, as they require no chain building, and no
400 * expiration or hostname checks. Because DANE-EE(3) is numerically
401 * largest, this is accomplished via descending sort by "usage".
403 * We also sort in descending order by matching ordinal to simplify
404 * the implementation of digest agility in the verification code.
406 * The choice of order for the selector is not significant, so we
407 * use the same descending order for consistency.
409 num = sk_danetls_record_num(dane->trecs);
410 for (i = 0; i < num; ++i) {
411 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
413 if (rec->usage > usage)
415 if (rec->usage < usage)
417 if (rec->selector > selector)
419 if (rec->selector < selector)
421 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
426 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
428 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
431 dane->umask |= DANETLS_USAGE_BIT(usage);
436 static void clear_ciphers(SSL *s)
438 /* clear the current cipher */
439 ssl_clear_cipher_ctx(s);
440 ssl_clear_hash_ctx(&s->read_hash);
441 ssl_clear_hash_ctx(&s->write_hash);
444 int SSL_clear(SSL *s)
446 if (s->method == NULL) {
447 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
451 if (ssl_clear_bad_session(s)) {
452 SSL_SESSION_free(s->session);
460 if (s->renegotiate) {
461 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
465 ossl_statem_clear(s);
467 s->version = s->method->version;
468 s->client_version = s->version;
469 s->rwstate = SSL_NOTHING;
471 BUF_MEM_free(s->init_buf);
476 /* Reset DANE verification result state */
479 X509_free(s->dane.mcert);
480 s->dane.mcert = NULL;
481 s->dane.mtlsa = NULL;
483 /* Clear the verification result peername */
484 X509_VERIFY_PARAM_move_peername(s->param, NULL);
487 * Check to see if we were changed into a different method, if so, revert
488 * back if we are not doing session-id reuse.
490 if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
491 && (s->method != s->ctx->method)) {
492 s->method->ssl_free(s);
493 s->method = s->ctx->method;
494 if (!s->method->ssl_new(s))
497 s->method->ssl_clear(s);
499 RECORD_LAYER_clear(&s->rlayer);
504 /** Used to change an SSL_CTXs default SSL method type */
505 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
507 STACK_OF(SSL_CIPHER) *sk;
511 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
512 &(ctx->cipher_list_by_id),
513 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
514 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
515 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
516 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
522 SSL *SSL_new(SSL_CTX *ctx)
527 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
530 if (ctx->method == NULL) {
531 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
535 s = OPENSSL_zalloc(sizeof(*s));
539 s->lock = CRYPTO_THREAD_lock_new();
540 if (s->lock == NULL) {
541 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
546 RECORD_LAYER_init(&s->rlayer, s);
548 s->options = ctx->options;
549 s->dane.flags = ctx->dane.flags;
550 s->min_proto_version = ctx->min_proto_version;
551 s->max_proto_version = ctx->max_proto_version;
553 s->max_cert_list = ctx->max_cert_list;
557 * Earlier library versions used to copy the pointer to the CERT, not
558 * its contents; only when setting new parameters for the per-SSL
559 * copy, ssl_cert_new would be called (and the direct reference to
560 * the per-SSL_CTX settings would be lost, but those still were
561 * indirectly accessed for various purposes, and for that reason they
562 * used to be known as s->ctx->default_cert). Now we don't look at the
563 * SSL_CTX's CERT after having duplicated it once.
565 s->cert = ssl_cert_dup(ctx->cert);
569 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
570 s->msg_callback = ctx->msg_callback;
571 s->msg_callback_arg = ctx->msg_callback_arg;
572 s->verify_mode = ctx->verify_mode;
573 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
574 s->sid_ctx_length = ctx->sid_ctx_length;
575 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
576 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
577 s->verify_callback = ctx->default_verify_callback;
578 s->generate_session_id = ctx->generate_session_id;
580 s->param = X509_VERIFY_PARAM_new();
581 if (s->param == NULL)
583 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
584 s->quiet_shutdown = ctx->quiet_shutdown;
585 s->max_send_fragment = ctx->max_send_fragment;
586 s->split_send_fragment = ctx->split_send_fragment;
587 s->max_pipelines = ctx->max_pipelines;
588 if (s->max_pipelines > 1)
589 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
590 if (ctx->default_read_buf_len > 0)
591 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
595 s->tlsext_debug_cb = 0;
596 s->tlsext_debug_arg = NULL;
597 s->tlsext_ticket_expected = 0;
598 s->tlsext_status_type = ctx->tlsext_status_type;
599 s->tlsext_status_expected = 0;
600 s->tlsext_ocsp_ids = NULL;
601 s->tlsext_ocsp_exts = NULL;
602 s->tlsext_ocsp_resp = NULL;
603 s->tlsext_ocsp_resplen = -1;
605 s->initial_ctx = ctx;
606 # ifndef OPENSSL_NO_EC
607 if (ctx->tlsext_ecpointformatlist) {
608 s->tlsext_ecpointformatlist =
609 OPENSSL_memdup(ctx->tlsext_ecpointformatlist,
610 ctx->tlsext_ecpointformatlist_length);
611 if (!s->tlsext_ecpointformatlist)
613 s->tlsext_ecpointformatlist_length =
614 ctx->tlsext_ecpointformatlist_length;
616 if (ctx->tlsext_ellipticcurvelist) {
617 s->tlsext_ellipticcurvelist =
618 OPENSSL_memdup(ctx->tlsext_ellipticcurvelist,
619 ctx->tlsext_ellipticcurvelist_length);
620 if (!s->tlsext_ellipticcurvelist)
622 s->tlsext_ellipticcurvelist_length =
623 ctx->tlsext_ellipticcurvelist_length;
626 # ifndef OPENSSL_NO_NEXTPROTONEG
627 s->next_proto_negotiated = NULL;
630 if (s->ctx->alpn_client_proto_list) {
631 s->alpn_client_proto_list =
632 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
633 if (s->alpn_client_proto_list == NULL)
635 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
636 s->ctx->alpn_client_proto_list_len);
637 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
640 s->verified_chain = NULL;
641 s->verify_result = X509_V_OK;
643 s->default_passwd_callback = ctx->default_passwd_callback;
644 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
646 s->method = ctx->method;
648 if (!s->method->ssl_new(s))
651 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
656 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
659 #ifndef OPENSSL_NO_PSK
660 s->psk_client_callback = ctx->psk_client_callback;
661 s->psk_server_callback = ctx->psk_server_callback;
666 #ifndef OPENSSL_NO_CT
667 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
668 ctx->ct_validation_callback_arg))
675 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
679 int SSL_is_dtls(const SSL *s)
681 return SSL_IS_DTLS(s) ? 1 : 0;
684 int SSL_up_ref(SSL *s)
688 if (CRYPTO_atomic_add(&s->references, 1, &i, s->lock) <= 0)
691 REF_PRINT_COUNT("SSL", s);
692 REF_ASSERT_ISNT(i < 2);
693 return ((i > 1) ? 1 : 0);
696 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
697 unsigned int sid_ctx_len)
699 if (sid_ctx_len > sizeof ctx->sid_ctx) {
700 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
701 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
704 ctx->sid_ctx_length = sid_ctx_len;
705 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
710 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
711 unsigned int sid_ctx_len)
713 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
714 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
715 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
718 ssl->sid_ctx_length = sid_ctx_len;
719 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
724 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
726 CRYPTO_THREAD_write_lock(ctx->lock);
727 ctx->generate_session_id = cb;
728 CRYPTO_THREAD_unlock(ctx->lock);
732 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
734 CRYPTO_THREAD_write_lock(ssl->lock);
735 ssl->generate_session_id = cb;
736 CRYPTO_THREAD_unlock(ssl->lock);
740 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
744 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
745 * we can "construct" a session to give us the desired check - ie. to
746 * find if there's a session in the hash table that would conflict with
747 * any new session built out of this id/id_len and the ssl_version in use
752 if (id_len > sizeof r.session_id)
755 r.ssl_version = ssl->version;
756 r.session_id_length = id_len;
757 memcpy(r.session_id, id, id_len);
759 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
760 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
761 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
765 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
767 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
770 int SSL_set_purpose(SSL *s, int purpose)
772 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
775 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
777 return X509_VERIFY_PARAM_set_trust(s->param, trust);
780 int SSL_set_trust(SSL *s, int trust)
782 return X509_VERIFY_PARAM_set_trust(s->param, trust);
785 int SSL_set1_host(SSL *s, const char *hostname)
787 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
790 int SSL_add1_host(SSL *s, const char *hostname)
792 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
795 void SSL_set_hostflags(SSL *s, unsigned int flags)
797 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
800 const char *SSL_get0_peername(SSL *s)
802 return X509_VERIFY_PARAM_get0_peername(s->param);
805 int SSL_CTX_dane_enable(SSL_CTX *ctx)
807 return dane_ctx_enable(&ctx->dane);
810 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
812 unsigned long orig = ctx->dane.flags;
814 ctx->dane.flags |= flags;
818 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
820 unsigned long orig = ctx->dane.flags;
822 ctx->dane.flags &= ~flags;
826 int SSL_dane_enable(SSL *s, const char *basedomain)
828 SSL_DANE *dane = &s->dane;
830 if (s->ctx->dane.mdmax == 0) {
831 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
834 if (dane->trecs != NULL) {
835 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
840 * Default SNI name. This rejects empty names, while set1_host below
841 * accepts them and disables host name checks. To avoid side-effects with
842 * invalid input, set the SNI name first.
844 if (s->tlsext_hostname == NULL) {
845 if (!SSL_set_tlsext_host_name(s, basedomain)) {
846 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
851 /* Primary RFC6125 reference identifier */
852 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
853 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
859 dane->dctx = &s->ctx->dane;
860 dane->trecs = sk_danetls_record_new_null();
862 if (dane->trecs == NULL) {
863 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
869 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
871 unsigned long orig = ssl->dane.flags;
873 ssl->dane.flags |= flags;
877 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
879 unsigned long orig = ssl->dane.flags;
881 ssl->dane.flags &= ~flags;
885 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
887 SSL_DANE *dane = &s->dane;
889 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
893 *mcert = dane->mcert;
895 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
900 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
901 uint8_t *mtype, unsigned const char **data, size_t *dlen)
903 SSL_DANE *dane = &s->dane;
905 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
909 *usage = dane->mtlsa->usage;
911 *selector = dane->mtlsa->selector;
913 *mtype = dane->mtlsa->mtype;
915 *data = dane->mtlsa->data;
917 *dlen = dane->mtlsa->dlen;
922 SSL_DANE *SSL_get0_dane(SSL *s)
927 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
928 uint8_t mtype, unsigned char *data, size_t dlen)
930 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
933 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype, uint8_t ord)
935 return dane_mtype_set(&ctx->dane, md, mtype, ord);
938 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
940 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
943 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
945 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
948 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
953 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
958 void SSL_certs_clear(SSL *s)
960 ssl_cert_clear_certs(s->cert);
963 void SSL_free(SSL *s)
970 CRYPTO_atomic_add(&s->references, -1, &i, s->lock);
971 REF_PRINT_COUNT("SSL", s);
974 REF_ASSERT_ISNT(i < 0);
976 X509_VERIFY_PARAM_free(s->param);
977 dane_final(&s->dane);
978 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
980 ssl_free_wbio_buffer(s);
982 BIO_free_all(s->wbio);
983 BIO_free_all(s->rbio);
985 BUF_MEM_free(s->init_buf);
987 /* add extra stuff */
988 sk_SSL_CIPHER_free(s->cipher_list);
989 sk_SSL_CIPHER_free(s->cipher_list_by_id);
991 /* Make the next call work :-) */
992 if (s->session != NULL) {
993 ssl_clear_bad_session(s);
994 SSL_SESSION_free(s->session);
999 ssl_cert_free(s->cert);
1000 /* Free up if allocated */
1002 OPENSSL_free(s->tlsext_hostname);
1003 SSL_CTX_free(s->initial_ctx);
1004 #ifndef OPENSSL_NO_EC
1005 OPENSSL_free(s->tlsext_ecpointformatlist);
1006 OPENSSL_free(s->tlsext_ellipticcurvelist);
1007 #endif /* OPENSSL_NO_EC */
1008 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
1009 #ifndef OPENSSL_NO_OCSP
1010 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
1012 #ifndef OPENSSL_NO_CT
1013 SCT_LIST_free(s->scts);
1014 OPENSSL_free(s->tlsext_scts);
1016 OPENSSL_free(s->tlsext_ocsp_resp);
1017 OPENSSL_free(s->alpn_client_proto_list);
1019 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
1021 sk_X509_pop_free(s->verified_chain, X509_free);
1023 if (s->method != NULL)
1024 s->method->ssl_free(s);
1026 RECORD_LAYER_release(&s->rlayer);
1028 SSL_CTX_free(s->ctx);
1030 ASYNC_WAIT_CTX_free(s->waitctx);
1032 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1033 OPENSSL_free(s->next_proto_negotiated);
1036 #ifndef OPENSSL_NO_SRTP
1037 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1040 CRYPTO_THREAD_lock_free(s->lock);
1045 void SSL_set0_rbio(SSL *s, BIO *rbio)
1047 BIO_free_all(s->rbio);
1051 void SSL_set0_wbio(SSL *s, BIO *wbio)
1054 * If the output buffering BIO is still in place, remove it
1056 if (s->bbio != NULL)
1057 s->wbio = BIO_pop(s->wbio);
1059 BIO_free_all(s->wbio);
1062 /* Re-attach |bbio| to the new |wbio|. */
1063 if (s->bbio != NULL)
1064 s->wbio = BIO_push(s->bbio, s->wbio);
1067 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1070 * For historical reasons, this function has many different cases in
1071 * ownership handling.
1074 /* If nothing has changed, do nothing */
1075 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1079 * If the two arguments are equal then one fewer reference is granted by the
1080 * caller than we want to take
1082 if (rbio != NULL && rbio == wbio)
1086 * If only the wbio is changed only adopt one reference.
1088 if (rbio == SSL_get_rbio(s)) {
1089 SSL_set0_wbio(s, wbio);
1093 * There is an asymmetry here for historical reasons. If only the rbio is
1094 * changed AND the rbio and wbio were originally different, then we only
1095 * adopt one reference.
1097 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1098 SSL_set0_rbio(s, rbio);
1102 /* Otherwise, adopt both references. */
1103 SSL_set0_rbio(s, rbio);
1104 SSL_set0_wbio(s, wbio);
1107 BIO *SSL_get_rbio(const SSL *s)
1112 BIO *SSL_get_wbio(const SSL *s)
1114 if (s->bbio != NULL) {
1116 * If |bbio| is active, the true caller-configured BIO is its
1119 return BIO_next(s->bbio);
1124 int SSL_get_fd(const SSL *s)
1126 return SSL_get_rfd(s);
1129 int SSL_get_rfd(const SSL *s)
1134 b = SSL_get_rbio(s);
1135 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1137 BIO_get_fd(r, &ret);
1141 int SSL_get_wfd(const SSL *s)
1146 b = SSL_get_wbio(s);
1147 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1149 BIO_get_fd(r, &ret);
1153 #ifndef OPENSSL_NO_SOCK
1154 int SSL_set_fd(SSL *s, int fd)
1159 bio = BIO_new(BIO_s_socket());
1162 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1165 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1166 SSL_set_bio(s, bio, bio);
1172 int SSL_set_wfd(SSL *s, int fd)
1174 BIO *rbio = SSL_get_rbio(s);
1176 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1177 || (int)BIO_get_fd(rbio, NULL) != fd) {
1178 BIO *bio = BIO_new(BIO_s_socket());
1181 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1184 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1185 SSL_set0_wbio(s, bio);
1188 SSL_set0_wbio(s, rbio);
1193 int SSL_set_rfd(SSL *s, int fd)
1195 BIO *wbio = SSL_get_wbio(s);
1197 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1198 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1199 BIO *bio = BIO_new(BIO_s_socket());
1202 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1205 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1206 SSL_set0_rbio(s, bio);
1209 SSL_set0_rbio(s, wbio);
1216 /* return length of latest Finished message we sent, copy to 'buf' */
1217 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1221 if (s->s3 != NULL) {
1222 ret = s->s3->tmp.finish_md_len;
1225 memcpy(buf, s->s3->tmp.finish_md, count);
1230 /* return length of latest Finished message we expected, copy to 'buf' */
1231 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1235 if (s->s3 != NULL) {
1236 ret = s->s3->tmp.peer_finish_md_len;
1239 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1244 int SSL_get_verify_mode(const SSL *s)
1246 return (s->verify_mode);
1249 int SSL_get_verify_depth(const SSL *s)
1251 return X509_VERIFY_PARAM_get_depth(s->param);
1254 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1255 return (s->verify_callback);
1258 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1260 return (ctx->verify_mode);
1263 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1265 return X509_VERIFY_PARAM_get_depth(ctx->param);
1268 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1269 return (ctx->default_verify_callback);
1272 void SSL_set_verify(SSL *s, int mode,
1273 int (*callback) (int ok, X509_STORE_CTX *ctx))
1275 s->verify_mode = mode;
1276 if (callback != NULL)
1277 s->verify_callback = callback;
1280 void SSL_set_verify_depth(SSL *s, int depth)
1282 X509_VERIFY_PARAM_set_depth(s->param, depth);
1285 void SSL_set_read_ahead(SSL *s, int yes)
1287 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1290 int SSL_get_read_ahead(const SSL *s)
1292 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1295 int SSL_pending(const SSL *s)
1298 * SSL_pending cannot work properly if read-ahead is enabled
1299 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1300 * impossible to fix since SSL_pending cannot report errors that may be
1301 * observed while scanning the new data. (Note that SSL_pending() is
1302 * often used as a boolean value, so we'd better not return -1.)
1304 return (s->method->ssl_pending(s));
1307 int SSL_has_pending(const SSL *s)
1310 * Similar to SSL_pending() but returns a 1 to indicate that we have
1311 * unprocessed data available or 0 otherwise (as opposed to the number of
1312 * bytes available). Unlike SSL_pending() this will take into account
1313 * read_ahead data. A 1 return simply indicates that we have unprocessed
1314 * data. That data may not result in any application data, or we may fail
1315 * to parse the records for some reason.
1320 return RECORD_LAYER_read_pending(&s->rlayer);
1323 X509 *SSL_get_peer_certificate(const SSL *s)
1327 if ((s == NULL) || (s->session == NULL))
1330 r = s->session->peer;
1340 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1344 if ((s == NULL) || (s->session == NULL))
1347 r = s->session->peer_chain;
1350 * If we are a client, cert_chain includes the peer's own certificate; if
1351 * we are a server, it does not.
1358 * Now in theory, since the calling process own 't' it should be safe to
1359 * modify. We need to be able to read f without being hassled
1361 int SSL_copy_session_id(SSL *t, const SSL *f)
1364 /* Do we need to to SSL locking? */
1365 if (!SSL_set_session(t, SSL_get_session(f))) {
1370 * what if we are setup for one protocol version but want to talk another
1372 if (t->method != f->method) {
1373 t->method->ssl_free(t);
1374 t->method = f->method;
1375 if (t->method->ssl_new(t) == 0)
1379 CRYPTO_atomic_add(&f->cert->references, 1, &i, f->cert->lock);
1380 ssl_cert_free(t->cert);
1382 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
1389 /* Fix this so it checks all the valid key/cert options */
1390 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1392 if ((ctx == NULL) ||
1393 (ctx->cert->key->x509 == NULL)) {
1394 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1395 SSL_R_NO_CERTIFICATE_ASSIGNED);
1398 if (ctx->cert->key->privatekey == NULL) {
1399 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1400 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1403 return (X509_check_private_key
1404 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1407 /* Fix this function so that it takes an optional type parameter */
1408 int SSL_check_private_key(const SSL *ssl)
1411 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1414 if (ssl->cert->key->x509 == NULL) {
1415 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1418 if (ssl->cert->key->privatekey == NULL) {
1419 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1422 return (X509_check_private_key(ssl->cert->key->x509,
1423 ssl->cert->key->privatekey));
1426 int SSL_waiting_for_async(SSL *s)
1434 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1436 ASYNC_WAIT_CTX *ctx = s->waitctx;
1440 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1443 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1444 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1446 ASYNC_WAIT_CTX *ctx = s->waitctx;
1450 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1454 int SSL_accept(SSL *s)
1456 if (s->handshake_func == NULL) {
1457 /* Not properly initialized yet */
1458 SSL_set_accept_state(s);
1461 return SSL_do_handshake(s);
1464 int SSL_connect(SSL *s)
1466 if (s->handshake_func == NULL) {
1467 /* Not properly initialized yet */
1468 SSL_set_connect_state(s);
1471 return SSL_do_handshake(s);
1474 long SSL_get_default_timeout(const SSL *s)
1476 return (s->method->get_timeout());
1479 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1480 int (*func)(void *)) {
1482 if (s->waitctx == NULL) {
1483 s->waitctx = ASYNC_WAIT_CTX_new();
1484 if (s->waitctx == NULL)
1487 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1488 sizeof(struct ssl_async_args))) {
1490 s->rwstate = SSL_NOTHING;
1491 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1494 s->rwstate = SSL_ASYNC_PAUSED;
1497 s->rwstate = SSL_ASYNC_NO_JOBS;
1503 s->rwstate = SSL_NOTHING;
1504 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1505 /* Shouldn't happen */
1510 static int ssl_io_intern(void *vargs)
1512 struct ssl_async_args *args;
1517 args = (struct ssl_async_args *)vargs;
1521 switch (args->type) {
1523 return args->f.func_read(s, buf, num);
1525 return args->f.func_write(s, buf, num);
1527 return args->f.func_other(s);
1532 int SSL_read(SSL *s, void *buf, int num)
1534 if (s->handshake_func == NULL) {
1535 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1539 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1540 s->rwstate = SSL_NOTHING;
1544 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1545 struct ssl_async_args args;
1550 args.type = READFUNC;
1551 args.f.func_read = s->method->ssl_read;
1553 return ssl_start_async_job(s, &args, ssl_io_intern);
1555 return s->method->ssl_read(s, buf, num);
1559 int SSL_peek(SSL *s, void *buf, int num)
1561 if (s->handshake_func == NULL) {
1562 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1566 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1569 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1570 struct ssl_async_args args;
1575 args.type = READFUNC;
1576 args.f.func_read = s->method->ssl_peek;
1578 return ssl_start_async_job(s, &args, ssl_io_intern);
1580 return s->method->ssl_peek(s, buf, num);
1584 int SSL_write(SSL *s, const void *buf, int num)
1586 if (s->handshake_func == NULL) {
1587 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1591 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1592 s->rwstate = SSL_NOTHING;
1593 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1597 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1598 struct ssl_async_args args;
1601 args.buf = (void *)buf;
1603 args.type = WRITEFUNC;
1604 args.f.func_write = s->method->ssl_write;
1606 return ssl_start_async_job(s, &args, ssl_io_intern);
1608 return s->method->ssl_write(s, buf, num);
1612 int SSL_shutdown(SSL *s)
1615 * Note that this function behaves differently from what one might
1616 * expect. Return values are 0 for no success (yet), 1 for success; but
1617 * calling it once is usually not enough, even if blocking I/O is used
1618 * (see ssl3_shutdown).
1621 if (s->handshake_func == NULL) {
1622 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1626 if (!SSL_in_init(s)) {
1627 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1628 struct ssl_async_args args;
1631 args.type = OTHERFUNC;
1632 args.f.func_other = s->method->ssl_shutdown;
1634 return ssl_start_async_job(s, &args, ssl_io_intern);
1636 return s->method->ssl_shutdown(s);
1639 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1644 int SSL_renegotiate(SSL *s)
1646 if (s->renegotiate == 0)
1651 return (s->method->ssl_renegotiate(s));
1654 int SSL_renegotiate_abbreviated(SSL *s)
1656 if (s->renegotiate == 0)
1661 return (s->method->ssl_renegotiate(s));
1664 int SSL_renegotiate_pending(SSL *s)
1667 * becomes true when negotiation is requested; false again once a
1668 * handshake has finished
1670 return (s->renegotiate != 0);
1673 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1678 case SSL_CTRL_GET_READ_AHEAD:
1679 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1680 case SSL_CTRL_SET_READ_AHEAD:
1681 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1682 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1685 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1686 s->msg_callback_arg = parg;
1690 return (s->mode |= larg);
1691 case SSL_CTRL_CLEAR_MODE:
1692 return (s->mode &= ~larg);
1693 case SSL_CTRL_GET_MAX_CERT_LIST:
1694 return (s->max_cert_list);
1695 case SSL_CTRL_SET_MAX_CERT_LIST:
1696 l = s->max_cert_list;
1697 s->max_cert_list = larg;
1699 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1700 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1702 s->max_send_fragment = larg;
1703 if (s->max_send_fragment < s->split_send_fragment)
1704 s->split_send_fragment = s->max_send_fragment;
1706 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1707 if ((unsigned int)larg > s->max_send_fragment || larg == 0)
1709 s->split_send_fragment = larg;
1711 case SSL_CTRL_SET_MAX_PIPELINES:
1712 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1714 s->max_pipelines = larg;
1716 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
1718 case SSL_CTRL_GET_RI_SUPPORT:
1720 return s->s3->send_connection_binding;
1723 case SSL_CTRL_CERT_FLAGS:
1724 return (s->cert->cert_flags |= larg);
1725 case SSL_CTRL_CLEAR_CERT_FLAGS:
1726 return (s->cert->cert_flags &= ~larg);
1728 case SSL_CTRL_GET_RAW_CIPHERLIST:
1730 if (s->s3->tmp.ciphers_raw == NULL)
1732 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1733 return (int)s->s3->tmp.ciphers_rawlen;
1735 return TLS_CIPHER_LEN;
1737 case SSL_CTRL_GET_EXTMS_SUPPORT:
1738 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1740 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1744 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1745 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1746 &s->min_proto_version);
1747 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1748 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1749 &s->max_proto_version);
1751 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1755 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1758 case SSL_CTRL_SET_MSG_CALLBACK:
1759 s->msg_callback = (void (*)
1760 (int write_p, int version, int content_type,
1761 const void *buf, size_t len, SSL *ssl,
1766 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1770 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1772 return ctx->sessions;
1775 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1778 /* For some cases with ctx == NULL perform syntax checks */
1781 #ifndef OPENSSL_NO_EC
1782 case SSL_CTRL_SET_CURVES_LIST:
1783 return tls1_set_curves_list(NULL, NULL, parg);
1785 case SSL_CTRL_SET_SIGALGS_LIST:
1786 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1787 return tls1_set_sigalgs_list(NULL, parg, 0);
1794 case SSL_CTRL_GET_READ_AHEAD:
1795 return (ctx->read_ahead);
1796 case SSL_CTRL_SET_READ_AHEAD:
1797 l = ctx->read_ahead;
1798 ctx->read_ahead = larg;
1801 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1802 ctx->msg_callback_arg = parg;
1805 case SSL_CTRL_GET_MAX_CERT_LIST:
1806 return (ctx->max_cert_list);
1807 case SSL_CTRL_SET_MAX_CERT_LIST:
1808 l = ctx->max_cert_list;
1809 ctx->max_cert_list = larg;
1812 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1813 l = ctx->session_cache_size;
1814 ctx->session_cache_size = larg;
1816 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1817 return (ctx->session_cache_size);
1818 case SSL_CTRL_SET_SESS_CACHE_MODE:
1819 l = ctx->session_cache_mode;
1820 ctx->session_cache_mode = larg;
1822 case SSL_CTRL_GET_SESS_CACHE_MODE:
1823 return (ctx->session_cache_mode);
1825 case SSL_CTRL_SESS_NUMBER:
1826 return (lh_SSL_SESSION_num_items(ctx->sessions));
1827 case SSL_CTRL_SESS_CONNECT:
1828 return (ctx->stats.sess_connect);
1829 case SSL_CTRL_SESS_CONNECT_GOOD:
1830 return (ctx->stats.sess_connect_good);
1831 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1832 return (ctx->stats.sess_connect_renegotiate);
1833 case SSL_CTRL_SESS_ACCEPT:
1834 return (ctx->stats.sess_accept);
1835 case SSL_CTRL_SESS_ACCEPT_GOOD:
1836 return (ctx->stats.sess_accept_good);
1837 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1838 return (ctx->stats.sess_accept_renegotiate);
1839 case SSL_CTRL_SESS_HIT:
1840 return (ctx->stats.sess_hit);
1841 case SSL_CTRL_SESS_CB_HIT:
1842 return (ctx->stats.sess_cb_hit);
1843 case SSL_CTRL_SESS_MISSES:
1844 return (ctx->stats.sess_miss);
1845 case SSL_CTRL_SESS_TIMEOUTS:
1846 return (ctx->stats.sess_timeout);
1847 case SSL_CTRL_SESS_CACHE_FULL:
1848 return (ctx->stats.sess_cache_full);
1850 return (ctx->mode |= larg);
1851 case SSL_CTRL_CLEAR_MODE:
1852 return (ctx->mode &= ~larg);
1853 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1854 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1856 ctx->max_send_fragment = larg;
1857 if (ctx->max_send_fragment < ctx->split_send_fragment)
1858 ctx->split_send_fragment = ctx->max_send_fragment;
1860 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1861 if ((unsigned int)larg > ctx->max_send_fragment || larg == 0)
1863 ctx->split_send_fragment = larg;
1865 case SSL_CTRL_SET_MAX_PIPELINES:
1866 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1868 ctx->max_pipelines = larg;
1870 case SSL_CTRL_CERT_FLAGS:
1871 return (ctx->cert->cert_flags |= larg);
1872 case SSL_CTRL_CLEAR_CERT_FLAGS:
1873 return (ctx->cert->cert_flags &= ~larg);
1874 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1875 return ssl_set_version_bound(ctx->method->version, (int)larg,
1876 &ctx->min_proto_version);
1877 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1878 return ssl_set_version_bound(ctx->method->version, (int)larg,
1879 &ctx->max_proto_version);
1881 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1885 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1888 case SSL_CTRL_SET_MSG_CALLBACK:
1889 ctx->msg_callback = (void (*)
1890 (int write_p, int version, int content_type,
1891 const void *buf, size_t len, SSL *ssl,
1896 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1900 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1909 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1910 const SSL_CIPHER *const *bp)
1912 if ((*ap)->id > (*bp)->id)
1914 if ((*ap)->id < (*bp)->id)
1919 /** return a STACK of the ciphers available for the SSL and in order of
1921 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1924 if (s->cipher_list != NULL) {
1925 return (s->cipher_list);
1926 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1927 return (s->ctx->cipher_list);
1933 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
1935 if ((s == NULL) || (s->session == NULL) || !s->server)
1937 return s->session->ciphers;
1940 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1942 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1944 ciphers = SSL_get_ciphers(s);
1947 ssl_set_client_disabled(s);
1948 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1949 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1950 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1952 sk = sk_SSL_CIPHER_new_null();
1955 if (!sk_SSL_CIPHER_push(sk, c)) {
1956 sk_SSL_CIPHER_free(sk);
1964 /** return a STACK of the ciphers available for the SSL and in order of
1966 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1969 if (s->cipher_list_by_id != NULL) {
1970 return (s->cipher_list_by_id);
1971 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1972 return (s->ctx->cipher_list_by_id);
1978 /** The old interface to get the same thing as SSL_get_ciphers() */
1979 const char *SSL_get_cipher_list(const SSL *s, int n)
1981 const SSL_CIPHER *c;
1982 STACK_OF(SSL_CIPHER) *sk;
1986 sk = SSL_get_ciphers(s);
1987 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1989 c = sk_SSL_CIPHER_value(sk, n);
1995 /** return a STACK of the ciphers available for the SSL_CTX and in order of
1997 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2000 return ctx->cipher_list;
2004 /** specify the ciphers to be used by default by the SSL_CTX */
2005 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2007 STACK_OF(SSL_CIPHER) *sk;
2009 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2010 &ctx->cipher_list_by_id, str, ctx->cert);
2012 * ssl_create_cipher_list may return an empty stack if it was unable to
2013 * find a cipher matching the given rule string (for example if the rule
2014 * string specifies a cipher which has been disabled). This is not an
2015 * error as far as ssl_create_cipher_list is concerned, and hence
2016 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2020 else if (sk_SSL_CIPHER_num(sk) == 0) {
2021 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2027 /** specify the ciphers to be used by the SSL */
2028 int SSL_set_cipher_list(SSL *s, const char *str)
2030 STACK_OF(SSL_CIPHER) *sk;
2032 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2033 &s->cipher_list_by_id, str, s->cert);
2034 /* see comment in SSL_CTX_set_cipher_list */
2037 else if (sk_SSL_CIPHER_num(sk) == 0) {
2038 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2044 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2047 STACK_OF(SSL_CIPHER) *sk;
2048 const SSL_CIPHER *c;
2051 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2055 sk = s->session->ciphers;
2057 if (sk_SSL_CIPHER_num(sk) == 0)
2060 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2063 c = sk_SSL_CIPHER_value(sk, i);
2064 n = strlen(c->name);
2071 memcpy(p, c->name, n + 1);
2080 /** return a servername extension value if provided in Client Hello, or NULL.
2081 * So far, only host_name types are defined (RFC 3546).
2084 const char *SSL_get_servername(const SSL *s, const int type)
2086 if (type != TLSEXT_NAMETYPE_host_name)
2089 return s->session && !s->tlsext_hostname ?
2090 s->session->tlsext_hostname : s->tlsext_hostname;
2093 int SSL_get_servername_type(const SSL *s)
2096 && (!s->tlsext_hostname ? s->session->
2097 tlsext_hostname : s->tlsext_hostname))
2098 return TLSEXT_NAMETYPE_host_name;
2103 * SSL_select_next_proto implements the standard protocol selection. It is
2104 * expected that this function is called from the callback set by
2105 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2106 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2107 * not included in the length. A byte string of length 0 is invalid. No byte
2108 * string may be truncated. The current, but experimental algorithm for
2109 * selecting the protocol is: 1) If the server doesn't support NPN then this
2110 * is indicated to the callback. In this case, the client application has to
2111 * abort the connection or have a default application level protocol. 2) If
2112 * the server supports NPN, but advertises an empty list then the client
2113 * selects the first protocol in its list, but indicates via the API that this
2114 * fallback case was enacted. 3) Otherwise, the client finds the first
2115 * protocol in the server's list that it supports and selects this protocol.
2116 * This is because it's assumed that the server has better information about
2117 * which protocol a client should use. 4) If the client doesn't support any
2118 * of the server's advertised protocols, then this is treated the same as
2119 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2120 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2122 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2123 const unsigned char *server,
2124 unsigned int server_len,
2125 const unsigned char *client,
2126 unsigned int client_len)
2129 const unsigned char *result;
2130 int status = OPENSSL_NPN_UNSUPPORTED;
2133 * For each protocol in server preference order, see if we support it.
2135 for (i = 0; i < server_len;) {
2136 for (j = 0; j < client_len;) {
2137 if (server[i] == client[j] &&
2138 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2139 /* We found a match */
2140 result = &server[i];
2141 status = OPENSSL_NPN_NEGOTIATED;
2151 /* There's no overlap between our protocols and the server's list. */
2153 status = OPENSSL_NPN_NO_OVERLAP;
2156 *out = (unsigned char *)result + 1;
2157 *outlen = result[0];
2161 #ifndef OPENSSL_NO_NEXTPROTONEG
2163 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2164 * client's requested protocol for this connection and returns 0. If the
2165 * client didn't request any protocol, then *data is set to NULL. Note that
2166 * the client can request any protocol it chooses. The value returned from
2167 * this function need not be a member of the list of supported protocols
2168 * provided by the callback.
2170 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2173 *data = s->next_proto_negotiated;
2177 *len = s->next_proto_negotiated_len;
2182 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
2183 * a TLS server needs a list of supported protocols for Next Protocol
2184 * Negotiation. The returned list must be in wire format. The list is
2185 * returned by setting |out| to point to it and |outlen| to its length. This
2186 * memory will not be modified, but one should assume that the SSL* keeps a
2187 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2188 * wishes to advertise. Otherwise, no such extension will be included in the
2191 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
2192 int (*cb) (SSL *ssl,
2195 unsigned int *outlen,
2196 void *arg), void *arg)
2198 ctx->next_protos_advertised_cb = cb;
2199 ctx->next_protos_advertised_cb_arg = arg;
2203 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2204 * client needs to select a protocol from the server's provided list. |out|
2205 * must be set to point to the selected protocol (which may be within |in|).
2206 * The length of the protocol name must be written into |outlen|. The
2207 * server's advertised protocols are provided in |in| and |inlen|. The
2208 * callback can assume that |in| is syntactically valid. The client must
2209 * select a protocol. It is fatal to the connection if this callback returns
2210 * a value other than SSL_TLSEXT_ERR_OK.
2212 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
2213 int (*cb) (SSL *s, unsigned char **out,
2214 unsigned char *outlen,
2215 const unsigned char *in,
2217 void *arg), void *arg)
2219 ctx->next_proto_select_cb = cb;
2220 ctx->next_proto_select_cb_arg = arg;
2225 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2226 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2227 * length-prefixed strings). Returns 0 on success.
2229 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2230 unsigned int protos_len)
2232 OPENSSL_free(ctx->alpn_client_proto_list);
2233 ctx->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2234 if (ctx->alpn_client_proto_list == NULL) {
2235 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2238 ctx->alpn_client_proto_list_len = protos_len;
2244 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2245 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2246 * length-prefixed strings). Returns 0 on success.
2248 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2249 unsigned int protos_len)
2251 OPENSSL_free(ssl->alpn_client_proto_list);
2252 ssl->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2253 if (ssl->alpn_client_proto_list == NULL) {
2254 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2257 ssl->alpn_client_proto_list_len = protos_len;
2263 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2264 * called during ClientHello processing in order to select an ALPN protocol
2265 * from the client's list of offered protocols.
2267 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2268 int (*cb) (SSL *ssl,
2269 const unsigned char **out,
2270 unsigned char *outlen,
2271 const unsigned char *in,
2273 void *arg), void *arg)
2275 ctx->alpn_select_cb = cb;
2276 ctx->alpn_select_cb_arg = arg;
2280 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2281 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2282 * (not including the leading length-prefix byte). If the server didn't
2283 * respond with a negotiated protocol then |*len| will be zero.
2285 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2290 *data = ssl->s3->alpn_selected;
2294 *len = ssl->s3->alpn_selected_len;
2298 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2299 const char *label, size_t llen,
2300 const unsigned char *p, size_t plen,
2303 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2306 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2311 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2316 ((unsigned int)a->session_id[0]) |
2317 ((unsigned int)a->session_id[1] << 8L) |
2318 ((unsigned long)a->session_id[2] << 16L) |
2319 ((unsigned long)a->session_id[3] << 24L);
2324 * NB: If this function (or indeed the hash function which uses a sort of
2325 * coarser function than this one) is changed, ensure
2326 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2327 * being able to construct an SSL_SESSION that will collide with any existing
2328 * session with a matching session ID.
2330 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2332 if (a->ssl_version != b->ssl_version)
2334 if (a->session_id_length != b->session_id_length)
2336 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2340 * These wrapper functions should remain rather than redeclaring
2341 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2342 * variable. The reason is that the functions aren't static, they're exposed
2346 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2348 SSL_CTX *ret = NULL;
2351 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2355 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2358 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
2359 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE);
2363 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2364 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2367 ret = OPENSSL_zalloc(sizeof(*ret));
2372 ret->min_proto_version = 0;
2373 ret->max_proto_version = 0;
2374 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2375 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2376 /* We take the system default. */
2377 ret->session_timeout = meth->get_timeout();
2378 ret->references = 1;
2379 ret->lock = CRYPTO_THREAD_lock_new();
2380 if (ret->lock == NULL) {
2381 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2385 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2386 ret->verify_mode = SSL_VERIFY_NONE;
2387 if ((ret->cert = ssl_cert_new()) == NULL)
2390 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2391 if (ret->sessions == NULL)
2393 ret->cert_store = X509_STORE_new();
2394 if (ret->cert_store == NULL)
2396 #ifndef OPENSSL_NO_CT
2397 ret->ctlog_store = CTLOG_STORE_new();
2398 if (ret->ctlog_store == NULL)
2401 if (!ssl_create_cipher_list(ret->method,
2402 &ret->cipher_list, &ret->cipher_list_by_id,
2403 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2404 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2405 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2409 ret->param = X509_VERIFY_PARAM_new();
2410 if (ret->param == NULL)
2413 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2414 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2417 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2418 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2422 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
2425 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2428 /* No compression for DTLS */
2429 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2430 ret->comp_methods = SSL_COMP_get_compression_methods();
2432 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2433 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2435 /* Setup RFC5077 ticket keys */
2436 if ((RAND_bytes(ret->tlsext_tick_key_name, sizeof(ret->tlsext_tick_key_name)) <= 0)
2437 || (RAND_bytes(ret->tlsext_tick_hmac_key, sizeof(ret->tlsext_tick_hmac_key)) <= 0)
2438 || (RAND_bytes(ret->tlsext_tick_aes_key, sizeof(ret->tlsext_tick_aes_key)) <= 0))
2439 ret->options |= SSL_OP_NO_TICKET;
2441 #ifndef OPENSSL_NO_SRP
2442 if (!SSL_CTX_SRP_CTX_init(ret))
2445 #ifndef OPENSSL_NO_ENGINE
2446 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2447 # define eng_strx(x) #x
2448 # define eng_str(x) eng_strx(x)
2449 /* Use specific client engine automatically... ignore errors */
2452 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2455 ENGINE_load_builtin_engines();
2456 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2458 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2464 * Default is to connect to non-RI servers. When RI is more widely
2465 * deployed might change this.
2467 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2469 * Disable compression by default to prevent CRIME. Applications can
2470 * re-enable compression by configuring
2471 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2472 * or by using the SSL_CONF library.
2474 ret->options |= SSL_OP_NO_COMPRESSION;
2476 ret->tlsext_status_type = -1;
2480 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2486 int SSL_CTX_up_ref(SSL_CTX *ctx)
2490 if (CRYPTO_atomic_add(&ctx->references, 1, &i, ctx->lock) <= 0)
2493 REF_PRINT_COUNT("SSL_CTX", ctx);
2494 REF_ASSERT_ISNT(i < 2);
2495 return ((i > 1) ? 1 : 0);
2498 void SSL_CTX_free(SSL_CTX *a)
2505 CRYPTO_atomic_add(&a->references, -1, &i, a->lock);
2506 REF_PRINT_COUNT("SSL_CTX", a);
2509 REF_ASSERT_ISNT(i < 0);
2511 X509_VERIFY_PARAM_free(a->param);
2512 dane_ctx_final(&a->dane);
2515 * Free internal session cache. However: the remove_cb() may reference
2516 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2517 * after the sessions were flushed.
2518 * As the ex_data handling routines might also touch the session cache,
2519 * the most secure solution seems to be: empty (flush) the cache, then
2520 * free ex_data, then finally free the cache.
2521 * (See ticket [openssl.org #212].)
2523 if (a->sessions != NULL)
2524 SSL_CTX_flush_sessions(a, 0);
2526 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2527 lh_SSL_SESSION_free(a->sessions);
2528 X509_STORE_free(a->cert_store);
2529 #ifndef OPENSSL_NO_CT
2530 CTLOG_STORE_free(a->ctlog_store);
2532 sk_SSL_CIPHER_free(a->cipher_list);
2533 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2534 ssl_cert_free(a->cert);
2535 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2536 sk_X509_pop_free(a->extra_certs, X509_free);
2537 a->comp_methods = NULL;
2538 #ifndef OPENSSL_NO_SRTP
2539 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2541 #ifndef OPENSSL_NO_SRP
2542 SSL_CTX_SRP_CTX_free(a);
2544 #ifndef OPENSSL_NO_ENGINE
2545 ENGINE_finish(a->client_cert_engine);
2548 #ifndef OPENSSL_NO_EC
2549 OPENSSL_free(a->tlsext_ecpointformatlist);
2550 OPENSSL_free(a->tlsext_ellipticcurvelist);
2552 OPENSSL_free(a->alpn_client_proto_list);
2554 CRYPTO_THREAD_lock_free(a->lock);
2559 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2561 ctx->default_passwd_callback = cb;
2564 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2566 ctx->default_passwd_callback_userdata = u;
2569 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2571 return ctx->default_passwd_callback;
2574 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2576 return ctx->default_passwd_callback_userdata;
2579 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2581 s->default_passwd_callback = cb;
2584 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2586 s->default_passwd_callback_userdata = u;
2589 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2591 return s->default_passwd_callback;
2594 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2596 return s->default_passwd_callback_userdata;
2599 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2600 int (*cb) (X509_STORE_CTX *, void *),
2603 ctx->app_verify_callback = cb;
2604 ctx->app_verify_arg = arg;
2607 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2608 int (*cb) (int, X509_STORE_CTX *))
2610 ctx->verify_mode = mode;
2611 ctx->default_verify_callback = cb;
2614 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2616 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2619 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2622 ssl_cert_set_cert_cb(c->cert, cb, arg);
2625 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2627 ssl_cert_set_cert_cb(s->cert, cb, arg);
2630 void ssl_set_masks(SSL *s)
2632 #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST)
2636 uint32_t *pvalid = s->s3->tmp.valid_flags;
2637 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
2638 unsigned long mask_k, mask_a;
2639 #ifndef OPENSSL_NO_EC
2640 int have_ecc_cert, ecdsa_ok;
2646 #ifndef OPENSSL_NO_DH
2647 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2652 rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
2653 rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
2654 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
2655 #ifndef OPENSSL_NO_EC
2656 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2662 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
2663 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
2666 #ifndef OPENSSL_NO_GOST
2667 cpk = &(c->pkeys[SSL_PKEY_GOST12_512]);
2668 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2669 mask_k |= SSL_kGOST;
2670 mask_a |= SSL_aGOST12;
2672 cpk = &(c->pkeys[SSL_PKEY_GOST12_256]);
2673 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2674 mask_k |= SSL_kGOST;
2675 mask_a |= SSL_aGOST12;
2677 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2678 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2679 mask_k |= SSL_kGOST;
2680 mask_a |= SSL_aGOST01;
2690 if (rsa_enc || rsa_sign) {
2698 mask_a |= SSL_aNULL;
2701 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2702 * depending on the key usage extension.
2704 #ifndef OPENSSL_NO_EC
2705 if (have_ecc_cert) {
2707 cpk = &c->pkeys[SSL_PKEY_ECC];
2709 ex_kusage = X509_get_key_usage(x);
2710 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2711 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2714 mask_a |= SSL_aECDSA;
2718 #ifndef OPENSSL_NO_EC
2719 mask_k |= SSL_kECDHE;
2722 #ifndef OPENSSL_NO_PSK
2725 if (mask_k & SSL_kRSA)
2726 mask_k |= SSL_kRSAPSK;
2727 if (mask_k & SSL_kDHE)
2728 mask_k |= SSL_kDHEPSK;
2729 if (mask_k & SSL_kECDHE)
2730 mask_k |= SSL_kECDHEPSK;
2733 s->s3->tmp.mask_k = mask_k;
2734 s->s3->tmp.mask_a = mask_a;
2737 #ifndef OPENSSL_NO_EC
2739 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2741 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
2742 /* key usage, if present, must allow signing */
2743 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
2744 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2745 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2749 return 1; /* all checks are ok */
2754 static int ssl_get_server_cert_index(const SSL *s)
2757 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2758 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2759 idx = SSL_PKEY_RSA_SIGN;
2760 if (idx == SSL_PKEY_GOST_EC) {
2761 if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)
2762 idx = SSL_PKEY_GOST12_512;
2763 else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509)
2764 idx = SSL_PKEY_GOST12_256;
2765 else if (s->cert->pkeys[SSL_PKEY_GOST01].x509)
2766 idx = SSL_PKEY_GOST01;
2771 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2775 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2781 if (!s->s3 || !s->s3->tmp.new_cipher)
2785 i = ssl_get_server_cert_index(s);
2787 /* This may or may not be an error. */
2792 return &c->pkeys[i];
2795 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2798 unsigned long alg_a;
2802 alg_a = cipher->algorithm_auth;
2805 if ((alg_a & SSL_aDSS) &&
2806 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2807 idx = SSL_PKEY_DSA_SIGN;
2808 else if (alg_a & SSL_aRSA) {
2809 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2810 idx = SSL_PKEY_RSA_SIGN;
2811 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2812 idx = SSL_PKEY_RSA_ENC;
2813 } else if ((alg_a & SSL_aECDSA) &&
2814 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2817 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2821 *pmd = s->s3->tmp.md[idx];
2822 return c->pkeys[idx].privatekey;
2825 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2826 size_t *serverinfo_length)
2830 *serverinfo_length = 0;
2833 i = ssl_get_server_cert_index(s);
2837 if (c->pkeys[i].serverinfo == NULL)
2840 *serverinfo = c->pkeys[i].serverinfo;
2841 *serverinfo_length = c->pkeys[i].serverinfo_length;
2845 void ssl_update_cache(SSL *s, int mode)
2850 * If the session_id_length is 0, we are not supposed to cache it, and it
2851 * would be rather hard to do anyway :-)
2853 if (s->session->session_id_length == 0)
2856 i = s->session_ctx->session_cache_mode;
2857 if ((i & mode) && (!s->hit)
2858 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2859 || SSL_CTX_add_session(s->session_ctx, s->session))
2860 && (s->session_ctx->new_session_cb != NULL)) {
2861 SSL_SESSION_up_ref(s->session);
2862 if (!s->session_ctx->new_session_cb(s, s->session))
2863 SSL_SESSION_free(s->session);
2866 /* auto flush every 255 connections */
2867 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2868 if ((((mode & SSL_SESS_CACHE_CLIENT)
2869 ? s->session_ctx->stats.sess_connect_good
2870 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2871 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2876 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2881 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2886 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2890 if (s->method != meth) {
2891 const SSL_METHOD *sm = s->method;
2892 int (*hf)(SSL *) = s->handshake_func;
2894 if (sm->version == meth->version)
2899 ret = s->method->ssl_new(s);
2902 if (hf == sm->ssl_connect)
2903 s->handshake_func = meth->ssl_connect;
2904 else if (hf == sm->ssl_accept)
2905 s->handshake_func = meth->ssl_accept;
2910 int SSL_get_error(const SSL *s, int i)
2917 return (SSL_ERROR_NONE);
2920 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2921 * where we do encode the error
2923 if ((l = ERR_peek_error()) != 0) {
2924 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2925 return (SSL_ERROR_SYSCALL);
2927 return (SSL_ERROR_SSL);
2931 if (SSL_want_read(s)) {
2932 bio = SSL_get_rbio(s);
2933 if (BIO_should_read(bio))
2934 return (SSL_ERROR_WANT_READ);
2935 else if (BIO_should_write(bio))
2937 * This one doesn't make too much sense ... We never try to write
2938 * to the rbio, and an application program where rbio and wbio
2939 * are separate couldn't even know what it should wait for.
2940 * However if we ever set s->rwstate incorrectly (so that we have
2941 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2942 * wbio *are* the same, this test works around that bug; so it
2943 * might be safer to keep it.
2945 return (SSL_ERROR_WANT_WRITE);
2946 else if (BIO_should_io_special(bio)) {
2947 reason = BIO_get_retry_reason(bio);
2948 if (reason == BIO_RR_CONNECT)
2949 return (SSL_ERROR_WANT_CONNECT);
2950 else if (reason == BIO_RR_ACCEPT)
2951 return (SSL_ERROR_WANT_ACCEPT);
2953 return (SSL_ERROR_SYSCALL); /* unknown */
2957 if (SSL_want_write(s)) {
2959 * Access wbio directly - in order to use the buffered bio if
2963 if (BIO_should_write(bio))
2964 return (SSL_ERROR_WANT_WRITE);
2965 else if (BIO_should_read(bio))
2967 * See above (SSL_want_read(s) with BIO_should_write(bio))
2969 return (SSL_ERROR_WANT_READ);
2970 else if (BIO_should_io_special(bio)) {
2971 reason = BIO_get_retry_reason(bio);
2972 if (reason == BIO_RR_CONNECT)
2973 return (SSL_ERROR_WANT_CONNECT);
2974 else if (reason == BIO_RR_ACCEPT)
2975 return (SSL_ERROR_WANT_ACCEPT);
2977 return (SSL_ERROR_SYSCALL);
2980 if (SSL_want_x509_lookup(s)) {
2981 return (SSL_ERROR_WANT_X509_LOOKUP);
2983 if (SSL_want_async(s)) {
2984 return SSL_ERROR_WANT_ASYNC;
2986 if (SSL_want_async_job(s)) {
2987 return SSL_ERROR_WANT_ASYNC_JOB;
2992 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2993 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2994 return (SSL_ERROR_ZERO_RETURN);
2996 return (SSL_ERROR_SYSCALL);
2999 static int ssl_do_handshake_intern(void *vargs)
3001 struct ssl_async_args *args;
3004 args = (struct ssl_async_args *)vargs;
3007 return s->handshake_func(s);
3010 int SSL_do_handshake(SSL *s)
3014 if (s->handshake_func == NULL) {
3015 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3019 s->method->ssl_renegotiate_check(s);
3021 if (SSL_in_init(s) || SSL_in_before(s)) {
3022 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3023 struct ssl_async_args args;
3027 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3029 ret = s->handshake_func(s);
3035 void SSL_set_accept_state(SSL *s)
3039 ossl_statem_clear(s);
3040 s->handshake_func = s->method->ssl_accept;
3044 void SSL_set_connect_state(SSL *s)
3048 ossl_statem_clear(s);
3049 s->handshake_func = s->method->ssl_connect;
3053 int ssl_undefined_function(SSL *s)
3055 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3059 int ssl_undefined_void_function(void)
3061 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3062 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3066 int ssl_undefined_const_function(const SSL *s)
3071 const SSL_METHOD *ssl_bad_method(int ver)
3073 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3077 const char *ssl_protocol_to_string(int version)
3079 if (version == TLS1_2_VERSION)
3081 else if (version == TLS1_1_VERSION)
3083 else if (version == TLS1_VERSION)
3085 else if (version == SSL3_VERSION)
3087 else if (version == DTLS1_BAD_VER)
3089 else if (version == DTLS1_VERSION)
3091 else if (version == DTLS1_2_VERSION)
3097 const char *SSL_get_version(const SSL *s)
3099 return ssl_protocol_to_string(s->version);
3102 SSL *SSL_dup(SSL *s)
3104 STACK_OF(X509_NAME) *sk;
3109 /* If we're not quiescent, just up_ref! */
3110 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3111 CRYPTO_atomic_add(&s->references, 1, &i, s->lock);
3116 * Otherwise, copy configuration state, and session if set.
3118 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3121 if (s->session != NULL) {
3123 * Arranges to share the same session via up_ref. This "copies"
3124 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3126 if (!SSL_copy_session_id(ret, s))
3130 * No session has been established yet, so we have to expect that
3131 * s->cert or ret->cert will be changed later -- they should not both
3132 * point to the same object, and thus we can't use
3133 * SSL_copy_session_id.
3135 if (!SSL_set_ssl_method(ret, s->method))
3138 if (s->cert != NULL) {
3139 ssl_cert_free(ret->cert);
3140 ret->cert = ssl_cert_dup(s->cert);
3141 if (ret->cert == NULL)
3145 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
3149 if (!ssl_dane_dup(ret, s))
3151 ret->version = s->version;
3152 ret->options = s->options;
3153 ret->mode = s->mode;
3154 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3155 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3156 ret->msg_callback = s->msg_callback;
3157 ret->msg_callback_arg = s->msg_callback_arg;
3158 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3159 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3160 ret->generate_session_id = s->generate_session_id;
3162 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3164 /* copy app data, a little dangerous perhaps */
3165 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3168 /* setup rbio, and wbio */
3169 if (s->rbio != NULL) {
3170 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3173 if (s->wbio != NULL) {
3174 if (s->wbio != s->rbio) {
3175 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3178 BIO_up_ref(ret->rbio);
3179 ret->wbio = ret->rbio;
3183 ret->server = s->server;
3184 if (s->handshake_func) {
3186 SSL_set_accept_state(ret);
3188 SSL_set_connect_state(ret);
3190 ret->shutdown = s->shutdown;
3193 ret->default_passwd_callback = s->default_passwd_callback;
3194 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3196 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3198 /* dup the cipher_list and cipher_list_by_id stacks */
3199 if (s->cipher_list != NULL) {
3200 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3203 if (s->cipher_list_by_id != NULL)
3204 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3208 /* Dup the client_CA list */
3209 if (s->client_CA != NULL) {
3210 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
3212 ret->client_CA = sk;
3213 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3214 xn = sk_X509_NAME_value(sk, i);
3215 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3228 void ssl_clear_cipher_ctx(SSL *s)
3230 if (s->enc_read_ctx != NULL) {
3231 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3232 s->enc_read_ctx = NULL;
3234 if (s->enc_write_ctx != NULL) {
3235 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3236 s->enc_write_ctx = NULL;
3238 #ifndef OPENSSL_NO_COMP
3239 COMP_CTX_free(s->expand);
3241 COMP_CTX_free(s->compress);
3246 X509 *SSL_get_certificate(const SSL *s)
3248 if (s->cert != NULL)
3249 return (s->cert->key->x509);
3254 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3256 if (s->cert != NULL)
3257 return (s->cert->key->privatekey);
3262 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3264 if (ctx->cert != NULL)
3265 return ctx->cert->key->x509;
3270 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3272 if (ctx->cert != NULL)
3273 return ctx->cert->key->privatekey;
3278 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3280 if ((s->session != NULL) && (s->session->cipher != NULL))
3281 return (s->session->cipher);
3285 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3287 #ifndef OPENSSL_NO_COMP
3288 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3294 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3296 #ifndef OPENSSL_NO_COMP
3297 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3303 int ssl_init_wbio_buffer(SSL *s)
3307 if (s->bbio != NULL) {
3308 /* Already buffered. */
3312 bbio = BIO_new(BIO_f_buffer());
3313 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3315 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3319 s->wbio = BIO_push(bbio, s->wbio);
3324 void ssl_free_wbio_buffer(SSL *s)
3326 /* callers ensure s is never null */
3327 if (s->bbio == NULL)
3330 s->wbio = BIO_pop(s->wbio);
3331 assert(s->wbio != NULL);
3336 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3338 ctx->quiet_shutdown = mode;
3341 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3343 return (ctx->quiet_shutdown);
3346 void SSL_set_quiet_shutdown(SSL *s, int mode)
3348 s->quiet_shutdown = mode;
3351 int SSL_get_quiet_shutdown(const SSL *s)
3353 return (s->quiet_shutdown);
3356 void SSL_set_shutdown(SSL *s, int mode)
3361 int SSL_get_shutdown(const SSL *s)
3366 int SSL_version(const SSL *s)
3371 int SSL_client_version(const SSL *s)
3373 return s->client_version;
3376 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3381 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3384 if (ssl->ctx == ctx)
3387 ctx = ssl->initial_ctx;
3388 new_cert = ssl_cert_dup(ctx->cert);
3389 if (new_cert == NULL) {
3392 ssl_cert_free(ssl->cert);
3393 ssl->cert = new_cert;
3396 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3397 * so setter APIs must prevent invalid lengths from entering the system.
3399 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3402 * If the session ID context matches that of the parent SSL_CTX,
3403 * inherit it from the new SSL_CTX as well. If however the context does
3404 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3405 * leave it unchanged.
3407 if ((ssl->ctx != NULL) &&
3408 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3409 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3410 ssl->sid_ctx_length = ctx->sid_ctx_length;
3411 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3414 SSL_CTX_up_ref(ctx);
3415 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3421 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3423 return (X509_STORE_set_default_paths(ctx->cert_store));
3426 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3428 X509_LOOKUP *lookup;
3430 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3433 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3435 /* Clear any errors if the default directory does not exist */
3441 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3443 X509_LOOKUP *lookup;
3445 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3449 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3451 /* Clear any errors if the default file does not exist */
3457 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3460 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3463 void SSL_set_info_callback(SSL *ssl,
3464 void (*cb) (const SSL *ssl, int type, int val))
3466 ssl->info_callback = cb;
3470 * One compiler (Diab DCC) doesn't like argument names in returned function
3473 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3476 return ssl->info_callback;
3479 void SSL_set_verify_result(SSL *ssl, long arg)
3481 ssl->verify_result = arg;
3484 long SSL_get_verify_result(const SSL *ssl)
3486 return (ssl->verify_result);
3489 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3492 return sizeof(ssl->s3->client_random);
3493 if (outlen > sizeof(ssl->s3->client_random))
3494 outlen = sizeof(ssl->s3->client_random);
3495 memcpy(out, ssl->s3->client_random, outlen);
3499 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3502 return sizeof(ssl->s3->server_random);
3503 if (outlen > sizeof(ssl->s3->server_random))
3504 outlen = sizeof(ssl->s3->server_random);
3505 memcpy(out, ssl->s3->server_random, outlen);
3509 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3510 unsigned char *out, size_t outlen)
3512 if (session->master_key_length < 0) {
3513 /* Should never happen */
3517 return session->master_key_length;
3518 if (outlen > (size_t)session->master_key_length)
3519 outlen = session->master_key_length;
3520 memcpy(out, session->master_key, outlen);
3524 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3526 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3529 void *SSL_get_ex_data(const SSL *s, int idx)
3531 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3534 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3536 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3539 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3541 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3549 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3551 return (ctx->cert_store);
3554 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3556 X509_STORE_free(ctx->cert_store);
3557 ctx->cert_store = store;
3560 int SSL_want(const SSL *s)
3562 return (s->rwstate);
3566 * \brief Set the callback for generating temporary DH keys.
3567 * \param ctx the SSL context.
3568 * \param dh the callback
3571 #ifndef OPENSSL_NO_DH
3572 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3573 DH *(*dh) (SSL *ssl, int is_export,
3576 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3579 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3582 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3586 #ifndef OPENSSL_NO_PSK
3587 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3589 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3590 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3591 SSL_R_DATA_LENGTH_TOO_LONG);
3594 OPENSSL_free(ctx->cert->psk_identity_hint);
3595 if (identity_hint != NULL) {
3596 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3597 if (ctx->cert->psk_identity_hint == NULL)
3600 ctx->cert->psk_identity_hint = NULL;
3604 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3609 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3610 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3613 OPENSSL_free(s->cert->psk_identity_hint);
3614 if (identity_hint != NULL) {
3615 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3616 if (s->cert->psk_identity_hint == NULL)
3619 s->cert->psk_identity_hint = NULL;
3623 const char *SSL_get_psk_identity_hint(const SSL *s)
3625 if (s == NULL || s->session == NULL)
3627 return (s->session->psk_identity_hint);
3630 const char *SSL_get_psk_identity(const SSL *s)
3632 if (s == NULL || s->session == NULL)
3634 return (s->session->psk_identity);
3637 void SSL_set_psk_client_callback(SSL *s,
3638 unsigned int (*cb) (SSL *ssl,
3647 s->psk_client_callback = cb;
3650 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3651 unsigned int (*cb) (SSL *ssl,
3660 ctx->psk_client_callback = cb;
3663 void SSL_set_psk_server_callback(SSL *s,
3664 unsigned int (*cb) (SSL *ssl,
3665 const char *identity,
3670 s->psk_server_callback = cb;
3673 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3674 unsigned int (*cb) (SSL *ssl,
3675 const char *identity,
3680 ctx->psk_server_callback = cb;
3684 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3685 void (*cb) (int write_p, int version,
3686 int content_type, const void *buf,
3687 size_t len, SSL *ssl, void *arg))
3689 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3692 void SSL_set_msg_callback(SSL *ssl,
3693 void (*cb) (int write_p, int version,
3694 int content_type, const void *buf,
3695 size_t len, SSL *ssl, void *arg))
3697 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3700 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3701 int (*cb) (SSL *ssl,
3705 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3706 (void (*)(void))cb);
3709 void SSL_set_not_resumable_session_callback(SSL *ssl,
3710 int (*cb) (SSL *ssl,
3711 int is_forward_secure))
3713 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3714 (void (*)(void))cb);
3718 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3719 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3720 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3724 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3726 ssl_clear_hash_ctx(hash);
3727 *hash = EVP_MD_CTX_new();
3728 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3729 EVP_MD_CTX_free(*hash);
3736 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3740 EVP_MD_CTX_free(*hash);
3744 /* Retrieve handshake hashes */
3745 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3747 EVP_MD_CTX *ctx = NULL;
3748 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
3749 int ret = EVP_MD_CTX_size(hdgst);
3750 if (ret < 0 || ret > outlen) {
3754 ctx = EVP_MD_CTX_new();
3759 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
3760 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
3763 EVP_MD_CTX_free(ctx);
3767 int SSL_session_reused(SSL *s)
3772 int SSL_is_server(SSL *s)
3777 #if OPENSSL_API_COMPAT < 0x10100000L
3778 void SSL_set_debug(SSL *s, int debug)
3780 /* Old function was do-nothing anyway... */
3787 void SSL_set_security_level(SSL *s, int level)
3789 s->cert->sec_level = level;
3792 int SSL_get_security_level(const SSL *s)
3794 return s->cert->sec_level;
3797 void SSL_set_security_callback(SSL *s,
3798 int (*cb) (const SSL *s, const SSL_CTX *ctx, int op,
3799 int bits, int nid, void *other,
3802 s->cert->sec_cb = cb;
3805 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s, const SSL_CTX *ctx, int op,
3807 void *other, void *ex) {
3808 return s->cert->sec_cb;
3811 void SSL_set0_security_ex_data(SSL *s, void *ex)
3813 s->cert->sec_ex = ex;
3816 void *SSL_get0_security_ex_data(const SSL *s)
3818 return s->cert->sec_ex;
3821 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3823 ctx->cert->sec_level = level;
3826 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3828 return ctx->cert->sec_level;
3831 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3832 int (*cb) (const SSL *s, const SSL_CTX *ctx, int op,
3833 int bits, int nid, void *other,
3836 ctx->cert->sec_cb = cb;
3839 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
3845 return ctx->cert->sec_cb;
3848 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3850 ctx->cert->sec_ex = ex;
3853 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3855 return ctx->cert->sec_ex;
3860 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3861 * can return unsigned long, instead of the generic long return value from the
3862 * control interface.
3864 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
3866 return ctx->options;
3868 unsigned long SSL_get_options(const SSL* s)
3872 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
3874 return ctx->options |= op;
3876 unsigned long SSL_set_options(SSL *s, unsigned long op)
3878 return s->options |= op;
3880 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
3882 return ctx->options &= ~op;
3884 unsigned long SSL_clear_options(SSL *s, unsigned long op)
3886 return s->options &= ~op;
3889 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
3891 return s->verified_chain;
3894 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
3896 #ifndef OPENSSL_NO_CT
3899 * Moves SCTs from the |src| stack to the |dst| stack.
3900 * The source of each SCT will be set to |origin|.
3901 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3903 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3905 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src, sct_source_t origin)
3911 *dst = sk_SCT_new_null();
3913 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
3918 while ((sct = sk_SCT_pop(src)) != NULL) {
3919 if (SCT_set_source(sct, origin) != 1)
3922 if (sk_SCT_push(*dst, sct) <= 0)
3930 sk_SCT_push(src, sct); /* Put the SCT back */
3935 * Look for data collected during ServerHello and parse if found.
3936 * Return 1 on success, 0 on failure.
3938 static int ct_extract_tls_extension_scts(SSL *s)
3940 int scts_extracted = 0;
3942 if (s->tlsext_scts != NULL) {
3943 const unsigned char *p = s->tlsext_scts;
3944 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->tlsext_scts_len);
3946 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
3948 SCT_LIST_free(scts);
3951 return scts_extracted;
3955 * Checks for an OCSP response and then attempts to extract any SCTs found if it
3956 * contains an SCT X509 extension. They will be stored in |s->scts|.
3958 * - The number of SCTs extracted, assuming an OCSP response exists.
3959 * - 0 if no OCSP response exists or it contains no SCTs.
3960 * - A negative integer if an error occurs.
3962 static int ct_extract_ocsp_response_scts(SSL *s)
3964 #ifndef OPENSSL_NO_OCSP
3965 int scts_extracted = 0;
3966 const unsigned char *p;
3967 OCSP_BASICRESP *br = NULL;
3968 OCSP_RESPONSE *rsp = NULL;
3969 STACK_OF(SCT) *scts = NULL;
3972 if (s->tlsext_ocsp_resp == NULL || s->tlsext_ocsp_resplen == 0)
3975 p = s->tlsext_ocsp_resp;
3976 rsp = d2i_OCSP_RESPONSE(NULL, &p, s->tlsext_ocsp_resplen);
3980 br = OCSP_response_get1_basic(rsp);
3984 for (i = 0; i < OCSP_resp_count(br); ++i) {
3985 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
3990 scts = OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
3991 scts_extracted = ct_move_scts(&s->scts, scts,
3992 SCT_SOURCE_OCSP_STAPLED_RESPONSE);
3993 if (scts_extracted < 0)
3997 SCT_LIST_free(scts);
3998 OCSP_BASICRESP_free(br);
3999 OCSP_RESPONSE_free(rsp);
4000 return scts_extracted;
4002 /* Behave as if no OCSP response exists */
4008 * Attempts to extract SCTs from the peer certificate.
4009 * Return the number of SCTs extracted, or a negative integer if an error
4012 static int ct_extract_x509v3_extension_scts(SSL *s)
4014 int scts_extracted = 0;
4015 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4018 STACK_OF(SCT) *scts =
4019 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4022 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4024 SCT_LIST_free(scts);
4027 return scts_extracted;
4031 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4032 * response (if it exists) and X509v3 extensions in the certificate.
4033 * Returns NULL if an error occurs.
4035 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4037 if (!s->scts_parsed) {
4038 if (ct_extract_tls_extension_scts(s) < 0 ||
4039 ct_extract_ocsp_response_scts(s) < 0 ||
4040 ct_extract_x509v3_extension_scts(s) < 0)
4050 static int ct_permissive(const CT_POLICY_EVAL_CTX *ctx,
4051 const STACK_OF(SCT) *scts, void *unused_arg)
4056 static int ct_strict(const CT_POLICY_EVAL_CTX *ctx,
4057 const STACK_OF(SCT) *scts, void *unused_arg)
4059 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4062 for (i = 0; i < count; ++i) {
4063 SCT *sct = sk_SCT_value(scts, i);
4064 int status = SCT_get_validation_status(sct);
4066 if (status == SCT_VALIDATION_STATUS_VALID)
4069 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4073 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4077 * Since code exists that uses the custom extension handler for CT, look
4078 * for this and throw an error if they have already registered to use CT.
4080 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4081 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) {
4088 /* If we are validating CT, then we MUST accept SCTs served via OCSP */
4089 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4093 s->ct_validation_callback = callback;
4094 s->ct_validation_callback_arg = arg;
4099 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4100 ssl_ct_validation_cb callback,
4104 * Since code exists that uses the custom extension handler for CT, look for
4105 * this and throw an error if they have already registered to use CT.
4107 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4108 TLSEXT_TYPE_signed_certificate_timestamp)) {
4109 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4110 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4114 ctx->ct_validation_callback = callback;
4115 ctx->ct_validation_callback_arg = arg;
4119 int SSL_ct_is_enabled(const SSL *s)
4121 return s->ct_validation_callback != NULL;
4124 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4126 return ctx->ct_validation_callback != NULL;
4129 int ssl_validate_ct(SSL *s)
4132 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4134 SSL_DANE *dane = &s->dane;
4135 CT_POLICY_EVAL_CTX *ctx = NULL;
4136 const STACK_OF(SCT) *scts;
4139 * If no callback is set, the peer is anonymous, or its chain is invalid,
4140 * skip SCT validation - just return success. Applications that continue
4141 * handshakes without certificates, with unverified chains, or pinned leaf
4142 * certificates are outside the scope of the WebPKI and CT.
4144 * The above exclusions notwithstanding the vast majority of peers will
4145 * have rather ordinary certificate chains validated by typical
4146 * applications that perform certificate verification and therefore will
4147 * process SCTs when enabled.
4149 if (s->ct_validation_callback == NULL || cert == NULL ||
4150 s->verify_result != X509_V_OK ||
4151 s->verified_chain == NULL ||
4152 sk_X509_num(s->verified_chain) <= 1)
4156 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4157 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4159 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4160 switch (dane->mtlsa->usage) {
4161 case DANETLS_USAGE_DANE_TA:
4162 case DANETLS_USAGE_DANE_EE:
4167 ctx = CT_POLICY_EVAL_CTX_new();
4169 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4173 issuer = sk_X509_value(s->verified_chain, 1);
4174 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4175 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4176 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4178 scts = SSL_get0_peer_scts(s);
4181 * This function returns success (> 0) only when all the SCTs are valid, 0
4182 * when some are invalid, and < 0 on various internal errors (out of
4183 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4184 * reason to abort the handshake, that decision is up to the callback.
4185 * Therefore, we error out only in the unexpected case that the return
4186 * value is negative.
4188 * XXX: One might well argue that the return value of this function is an
4189 * unfortunate design choice. Its job is only to determine the validation
4190 * status of each of the provided SCTs. So long as it correctly separates
4191 * the wheat from the chaff it should return success. Failure in this case
4192 * ought to correspond to an inability to carry out its duties.
4194 if (SCT_LIST_validate(scts, ctx) < 0) {
4195 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4199 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4201 ret = 0; /* This function returns 0 on failure */
4204 CT_POLICY_EVAL_CTX_free(ctx);
4206 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4207 * failure return code here. Also the application may wish the complete
4208 * the handshake, and then disconnect cleanly at a higher layer, after
4209 * checking the verification status of the completed connection.
4211 * We therefore force a certificate verification failure which will be
4212 * visible via SSL_get_verify_result() and cached as part of any resumed
4215 * Note: the permissive callback is for information gathering only, always
4216 * returns success, and does not affect verification status. Only the
4217 * strict callback or a custom application-specified callback can trigger
4218 * connection failure or record a verification error.
4221 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4225 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4227 switch (validation_mode) {
4229 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4231 case SSL_CT_VALIDATION_PERMISSIVE:
4232 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4233 case SSL_CT_VALIDATION_STRICT:
4234 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4238 int SSL_enable_ct(SSL *s, int validation_mode)
4240 switch (validation_mode) {
4242 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4244 case SSL_CT_VALIDATION_PERMISSIVE:
4245 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4246 case SSL_CT_VALIDATION_STRICT:
4247 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4251 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4253 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4256 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4258 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4261 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE *logs)
4263 CTLOG_STORE_free(ctx->ctlog_store);
4264 ctx->ctlog_store = logs;
4267 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4269 return ctx->ctlog_store;