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 *, size_t, size_t *);
88 int (*func_write) (SSL *, const void *, int);
89 int (*func_other) (SSL *);
99 DANETLS_MATCHING_FULL, 0, NID_undef
102 DANETLS_MATCHING_2256, 1, NID_sha256
105 DANETLS_MATCHING_2512, 2, NID_sha512
109 static int dane_ctx_enable(struct dane_ctx_st *dctx)
111 const EVP_MD **mdevp;
113 uint8_t mdmax = DANETLS_MATCHING_LAST;
114 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
117 if (dctx->mdevp != NULL)
120 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
121 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
123 if (mdord == NULL || mdevp == NULL) {
126 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
130 /* Install default entries */
131 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
134 if (dane_mds[i].nid == NID_undef ||
135 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
137 mdevp[dane_mds[i].mtype] = md;
138 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
148 static void dane_ctx_final(struct dane_ctx_st *dctx)
150 OPENSSL_free(dctx->mdevp);
153 OPENSSL_free(dctx->mdord);
158 static void tlsa_free(danetls_record *t)
162 OPENSSL_free(t->data);
163 EVP_PKEY_free(t->spki);
167 static void dane_final(SSL_DANE *dane)
169 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
172 sk_X509_pop_free(dane->certs, X509_free);
175 X509_free(dane->mcert);
183 * dane_copy - Copy dane configuration, sans verification state.
185 static int ssl_dane_dup(SSL *to, SSL *from)
190 if (!DANETLS_ENABLED(&from->dane))
193 dane_final(&to->dane);
194 to->dane.flags = from->dane.flags;
195 to->dane.dctx = &to->ctx->dane;
196 to->dane.trecs = sk_danetls_record_new_null();
198 if (to->dane.trecs == NULL) {
199 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
203 num = sk_danetls_record_num(from->dane.trecs);
204 for (i = 0; i < num; ++i) {
205 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
207 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
208 t->data, t->dlen) <= 0)
214 static int dane_mtype_set(struct dane_ctx_st *dctx,
215 const EVP_MD *md, uint8_t mtype, uint8_t ord)
219 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
220 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
224 if (mtype > dctx->mdmax) {
225 const EVP_MD **mdevp;
227 int n = ((int)mtype) + 1;
229 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
231 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
236 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
238 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
243 /* Zero-fill any gaps */
244 for (i = dctx->mdmax + 1; i < mtype; ++i) {
252 dctx->mdevp[mtype] = md;
253 /* Coerce ordinal of disabled matching types to 0 */
254 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
259 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
261 if (mtype > dane->dctx->mdmax)
263 return dane->dctx->mdevp[mtype];
266 static int dane_tlsa_add(SSL_DANE *dane,
269 uint8_t mtype, unsigned char *data, size_t dlen)
272 const EVP_MD *md = NULL;
273 int ilen = (int)dlen;
277 if (dane->trecs == NULL) {
278 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
282 if (ilen < 0 || dlen != (size_t)ilen) {
283 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
287 if (usage > DANETLS_USAGE_LAST) {
288 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
292 if (selector > DANETLS_SELECTOR_LAST) {
293 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
297 if (mtype != DANETLS_MATCHING_FULL) {
298 md = tlsa_md_get(dane, mtype);
300 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
305 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
306 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
310 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
314 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
315 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
320 t->selector = selector;
322 t->data = OPENSSL_malloc(ilen);
323 if (t->data == NULL) {
325 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
328 memcpy(t->data, data, ilen);
331 /* Validate and cache full certificate or public key */
332 if (mtype == DANETLS_MATCHING_FULL) {
333 const unsigned char *p = data;
335 EVP_PKEY *pkey = NULL;
338 case DANETLS_SELECTOR_CERT:
339 if (!d2i_X509(&cert, &p, dlen) || p < data ||
340 dlen != (size_t)(p - data)) {
342 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
345 if (X509_get0_pubkey(cert) == NULL) {
347 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
351 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
357 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
358 * records that contain full certificates of trust-anchors that are
359 * not present in the wire chain. For usage PKIX-TA(0), we augment
360 * the chain with untrusted Full(0) certificates from DNS, in case
361 * they are missing from the chain.
363 if ((dane->certs == NULL &&
364 (dane->certs = sk_X509_new_null()) == NULL) ||
365 !sk_X509_push(dane->certs, cert)) {
366 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
373 case DANETLS_SELECTOR_SPKI:
374 if (!d2i_PUBKEY(&pkey, &p, dlen) || p < data ||
375 dlen != (size_t)(p - data)) {
377 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
382 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
383 * records that contain full bare keys of trust-anchors that are
384 * not present in the wire chain.
386 if (usage == DANETLS_USAGE_DANE_TA)
395 * Find the right insertion point for the new record.
397 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
398 * they can be processed first, as they require no chain building, and no
399 * expiration or hostname checks. Because DANE-EE(3) is numerically
400 * largest, this is accomplished via descending sort by "usage".
402 * We also sort in descending order by matching ordinal to simplify
403 * the implementation of digest agility in the verification code.
405 * The choice of order for the selector is not significant, so we
406 * use the same descending order for consistency.
408 num = sk_danetls_record_num(dane->trecs);
409 for (i = 0; i < num; ++i) {
410 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
412 if (rec->usage > usage)
414 if (rec->usage < usage)
416 if (rec->selector > selector)
418 if (rec->selector < selector)
420 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
425 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
427 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
430 dane->umask |= DANETLS_USAGE_BIT(usage);
435 static void clear_ciphers(SSL *s)
437 /* clear the current cipher */
438 ssl_clear_cipher_ctx(s);
439 ssl_clear_hash_ctx(&s->read_hash);
440 ssl_clear_hash_ctx(&s->write_hash);
443 int SSL_clear(SSL *s)
445 if (s->method == NULL) {
446 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
450 if (ssl_clear_bad_session(s)) {
451 SSL_SESSION_free(s->session);
459 if (s->renegotiate) {
460 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
464 ossl_statem_clear(s);
466 s->version = s->method->version;
467 s->client_version = s->version;
468 s->rwstate = SSL_NOTHING;
470 BUF_MEM_free(s->init_buf);
475 /* Reset DANE verification result state */
478 X509_free(s->dane.mcert);
479 s->dane.mcert = NULL;
480 s->dane.mtlsa = NULL;
482 /* Clear the verification result peername */
483 X509_VERIFY_PARAM_move_peername(s->param, NULL);
486 * Check to see if we were changed into a different method, if so, revert
487 * back if we are not doing session-id reuse.
489 if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
490 && (s->method != s->ctx->method)) {
491 s->method->ssl_free(s);
492 s->method = s->ctx->method;
493 if (!s->method->ssl_new(s))
496 s->method->ssl_clear(s);
498 RECORD_LAYER_clear(&s->rlayer);
503 /** Used to change an SSL_CTXs default SSL method type */
504 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
506 STACK_OF(SSL_CIPHER) *sk;
510 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
511 &(ctx->cipher_list_by_id),
512 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
513 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
514 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
520 SSL *SSL_new(SSL_CTX *ctx)
525 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
528 if (ctx->method == NULL) {
529 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
533 s = OPENSSL_zalloc(sizeof(*s));
537 s->lock = CRYPTO_THREAD_lock_new();
538 if (s->lock == NULL) {
539 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
544 RECORD_LAYER_init(&s->rlayer, s);
546 s->options = ctx->options;
547 s->dane.flags = ctx->dane.flags;
548 s->min_proto_version = ctx->min_proto_version;
549 s->max_proto_version = ctx->max_proto_version;
551 s->max_cert_list = ctx->max_cert_list;
555 * Earlier library versions used to copy the pointer to the CERT, not
556 * its contents; only when setting new parameters for the per-SSL
557 * copy, ssl_cert_new would be called (and the direct reference to
558 * the per-SSL_CTX settings would be lost, but those still were
559 * indirectly accessed for various purposes, and for that reason they
560 * used to be known as s->ctx->default_cert). Now we don't look at the
561 * SSL_CTX's CERT after having duplicated it once.
563 s->cert = ssl_cert_dup(ctx->cert);
567 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
568 s->msg_callback = ctx->msg_callback;
569 s->msg_callback_arg = ctx->msg_callback_arg;
570 s->verify_mode = ctx->verify_mode;
571 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
572 s->sid_ctx_length = ctx->sid_ctx_length;
573 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
574 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
575 s->verify_callback = ctx->default_verify_callback;
576 s->generate_session_id = ctx->generate_session_id;
578 s->param = X509_VERIFY_PARAM_new();
579 if (s->param == NULL)
581 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
582 s->quiet_shutdown = ctx->quiet_shutdown;
583 s->max_send_fragment = ctx->max_send_fragment;
584 s->split_send_fragment = ctx->split_send_fragment;
585 s->max_pipelines = ctx->max_pipelines;
586 if (s->max_pipelines > 1)
587 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
588 if (ctx->default_read_buf_len > 0)
589 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
593 s->tlsext_debug_cb = 0;
594 s->tlsext_debug_arg = NULL;
595 s->tlsext_ticket_expected = 0;
596 s->tlsext_status_type = ctx->tlsext_status_type;
597 s->tlsext_status_expected = 0;
598 s->tlsext_ocsp_ids = NULL;
599 s->tlsext_ocsp_exts = NULL;
600 s->tlsext_ocsp_resp = NULL;
601 s->tlsext_ocsp_resplen = -1;
603 s->initial_ctx = ctx;
604 #ifndef OPENSSL_NO_EC
605 if (ctx->tlsext_ecpointformatlist) {
606 s->tlsext_ecpointformatlist =
607 OPENSSL_memdup(ctx->tlsext_ecpointformatlist,
608 ctx->tlsext_ecpointformatlist_length);
609 if (!s->tlsext_ecpointformatlist)
611 s->tlsext_ecpointformatlist_length =
612 ctx->tlsext_ecpointformatlist_length;
614 if (ctx->tlsext_ellipticcurvelist) {
615 s->tlsext_ellipticcurvelist =
616 OPENSSL_memdup(ctx->tlsext_ellipticcurvelist,
617 ctx->tlsext_ellipticcurvelist_length);
618 if (!s->tlsext_ellipticcurvelist)
620 s->tlsext_ellipticcurvelist_length =
621 ctx->tlsext_ellipticcurvelist_length;
624 #ifndef OPENSSL_NO_NEXTPROTONEG
625 s->next_proto_negotiated = NULL;
628 if (s->ctx->alpn_client_proto_list) {
629 s->alpn_client_proto_list =
630 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
631 if (s->alpn_client_proto_list == NULL)
633 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
634 s->ctx->alpn_client_proto_list_len);
635 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
638 s->verified_chain = NULL;
639 s->verify_result = X509_V_OK;
641 s->default_passwd_callback = ctx->default_passwd_callback;
642 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
644 s->method = ctx->method;
646 if (!s->method->ssl_new(s))
649 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
654 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
657 #ifndef OPENSSL_NO_PSK
658 s->psk_client_callback = ctx->psk_client_callback;
659 s->psk_server_callback = ctx->psk_server_callback;
664 #ifndef OPENSSL_NO_CT
665 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
666 ctx->ct_validation_callback_arg))
673 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
677 int SSL_is_dtls(const SSL *s)
679 return SSL_IS_DTLS(s) ? 1 : 0;
682 int SSL_up_ref(SSL *s)
686 if (CRYPTO_atomic_add(&s->references, 1, &i, s->lock) <= 0)
689 REF_PRINT_COUNT("SSL", s);
690 REF_ASSERT_ISNT(i < 2);
691 return ((i > 1) ? 1 : 0);
694 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
695 unsigned int sid_ctx_len)
697 if (sid_ctx_len > sizeof ctx->sid_ctx) {
698 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
699 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
702 ctx->sid_ctx_length = sid_ctx_len;
703 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
708 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
709 unsigned int sid_ctx_len)
711 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
712 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
713 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
716 ssl->sid_ctx_length = sid_ctx_len;
717 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
722 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
724 CRYPTO_THREAD_write_lock(ctx->lock);
725 ctx->generate_session_id = cb;
726 CRYPTO_THREAD_unlock(ctx->lock);
730 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
732 CRYPTO_THREAD_write_lock(ssl->lock);
733 ssl->generate_session_id = cb;
734 CRYPTO_THREAD_unlock(ssl->lock);
738 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
742 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
743 * we can "construct" a session to give us the desired check - ie. to
744 * find if there's a session in the hash table that would conflict with
745 * any new session built out of this id/id_len and the ssl_version in use
750 if (id_len > sizeof r.session_id)
753 r.ssl_version = ssl->version;
754 r.session_id_length = id_len;
755 memcpy(r.session_id, id, id_len);
757 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
758 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
759 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
763 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
765 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
768 int SSL_set_purpose(SSL *s, int purpose)
770 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
773 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
775 return X509_VERIFY_PARAM_set_trust(s->param, trust);
778 int SSL_set_trust(SSL *s, int trust)
780 return X509_VERIFY_PARAM_set_trust(s->param, trust);
783 int SSL_set1_host(SSL *s, const char *hostname)
785 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
788 int SSL_add1_host(SSL *s, const char *hostname)
790 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
793 void SSL_set_hostflags(SSL *s, unsigned int flags)
795 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
798 const char *SSL_get0_peername(SSL *s)
800 return X509_VERIFY_PARAM_get0_peername(s->param);
803 int SSL_CTX_dane_enable(SSL_CTX *ctx)
805 return dane_ctx_enable(&ctx->dane);
808 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
810 unsigned long orig = ctx->dane.flags;
812 ctx->dane.flags |= flags;
816 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
818 unsigned long orig = ctx->dane.flags;
820 ctx->dane.flags &= ~flags;
824 int SSL_dane_enable(SSL *s, const char *basedomain)
826 SSL_DANE *dane = &s->dane;
828 if (s->ctx->dane.mdmax == 0) {
829 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
832 if (dane->trecs != NULL) {
833 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
838 * Default SNI name. This rejects empty names, while set1_host below
839 * accepts them and disables host name checks. To avoid side-effects with
840 * invalid input, set the SNI name first.
842 if (s->tlsext_hostname == NULL) {
843 if (!SSL_set_tlsext_host_name(s, basedomain)) {
844 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
849 /* Primary RFC6125 reference identifier */
850 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
851 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
857 dane->dctx = &s->ctx->dane;
858 dane->trecs = sk_danetls_record_new_null();
860 if (dane->trecs == NULL) {
861 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
867 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
869 unsigned long orig = ssl->dane.flags;
871 ssl->dane.flags |= flags;
875 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
877 unsigned long orig = ssl->dane.flags;
879 ssl->dane.flags &= ~flags;
883 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
885 SSL_DANE *dane = &s->dane;
887 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
891 *mcert = dane->mcert;
893 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
898 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
899 uint8_t *mtype, unsigned const char **data, size_t *dlen)
901 SSL_DANE *dane = &s->dane;
903 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
907 *usage = dane->mtlsa->usage;
909 *selector = dane->mtlsa->selector;
911 *mtype = dane->mtlsa->mtype;
913 *data = dane->mtlsa->data;
915 *dlen = dane->mtlsa->dlen;
920 SSL_DANE *SSL_get0_dane(SSL *s)
925 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
926 uint8_t mtype, unsigned char *data, size_t dlen)
928 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
931 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
934 return dane_mtype_set(&ctx->dane, md, mtype, ord);
937 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
939 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
942 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
944 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
947 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
952 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
957 void SSL_certs_clear(SSL *s)
959 ssl_cert_clear_certs(s->cert);
962 void SSL_free(SSL *s)
969 CRYPTO_atomic_add(&s->references, -1, &i, s->lock);
970 REF_PRINT_COUNT("SSL", s);
973 REF_ASSERT_ISNT(i < 0);
975 X509_VERIFY_PARAM_free(s->param);
976 dane_final(&s->dane);
977 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
979 ssl_free_wbio_buffer(s);
981 BIO_free_all(s->wbio);
982 BIO_free_all(s->rbio);
984 BUF_MEM_free(s->init_buf);
986 /* add extra stuff */
987 sk_SSL_CIPHER_free(s->cipher_list);
988 sk_SSL_CIPHER_free(s->cipher_list_by_id);
990 /* Make the next call work :-) */
991 if (s->session != NULL) {
992 ssl_clear_bad_session(s);
993 SSL_SESSION_free(s->session);
998 ssl_cert_free(s->cert);
999 /* Free up if allocated */
1001 OPENSSL_free(s->tlsext_hostname);
1002 SSL_CTX_free(s->initial_ctx);
1003 #ifndef OPENSSL_NO_EC
1004 OPENSSL_free(s->tlsext_ecpointformatlist);
1005 OPENSSL_free(s->tlsext_ellipticcurvelist);
1006 #endif /* OPENSSL_NO_EC */
1007 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
1008 #ifndef OPENSSL_NO_OCSP
1009 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
1011 #ifndef OPENSSL_NO_CT
1012 SCT_LIST_free(s->scts);
1013 OPENSSL_free(s->tlsext_scts);
1015 OPENSSL_free(s->tlsext_ocsp_resp);
1016 OPENSSL_free(s->alpn_client_proto_list);
1018 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
1020 sk_X509_pop_free(s->verified_chain, X509_free);
1022 if (s->method != NULL)
1023 s->method->ssl_free(s);
1025 RECORD_LAYER_release(&s->rlayer);
1027 SSL_CTX_free(s->ctx);
1029 ASYNC_WAIT_CTX_free(s->waitctx);
1031 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1032 OPENSSL_free(s->next_proto_negotiated);
1035 #ifndef OPENSSL_NO_SRTP
1036 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1039 CRYPTO_THREAD_lock_free(s->lock);
1044 void SSL_set0_rbio(SSL *s, BIO *rbio)
1046 BIO_free_all(s->rbio);
1050 void SSL_set0_wbio(SSL *s, BIO *wbio)
1053 * If the output buffering BIO is still in place, remove it
1055 if (s->bbio != NULL)
1056 s->wbio = BIO_pop(s->wbio);
1058 BIO_free_all(s->wbio);
1061 /* Re-attach |bbio| to the new |wbio|. */
1062 if (s->bbio != NULL)
1063 s->wbio = BIO_push(s->bbio, s->wbio);
1066 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1069 * For historical reasons, this function has many different cases in
1070 * ownership handling.
1073 /* If nothing has changed, do nothing */
1074 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1078 * If the two arguments are equal then one fewer reference is granted by the
1079 * caller than we want to take
1081 if (rbio != NULL && rbio == wbio)
1085 * If only the wbio is changed only adopt one reference.
1087 if (rbio == SSL_get_rbio(s)) {
1088 SSL_set0_wbio(s, wbio);
1092 * There is an asymmetry here for historical reasons. If only the rbio is
1093 * changed AND the rbio and wbio were originally different, then we only
1094 * adopt one reference.
1096 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1097 SSL_set0_rbio(s, rbio);
1101 /* Otherwise, adopt both references. */
1102 SSL_set0_rbio(s, rbio);
1103 SSL_set0_wbio(s, wbio);
1106 BIO *SSL_get_rbio(const SSL *s)
1111 BIO *SSL_get_wbio(const SSL *s)
1113 if (s->bbio != NULL) {
1115 * If |bbio| is active, the true caller-configured BIO is its
1118 return BIO_next(s->bbio);
1123 int SSL_get_fd(const SSL *s)
1125 return SSL_get_rfd(s);
1128 int SSL_get_rfd(const SSL *s)
1133 b = SSL_get_rbio(s);
1134 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1136 BIO_get_fd(r, &ret);
1140 int SSL_get_wfd(const SSL *s)
1145 b = SSL_get_wbio(s);
1146 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1148 BIO_get_fd(r, &ret);
1152 #ifndef OPENSSL_NO_SOCK
1153 int SSL_set_fd(SSL *s, int fd)
1158 bio = BIO_new(BIO_s_socket());
1161 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1164 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1165 SSL_set_bio(s, bio, bio);
1171 int SSL_set_wfd(SSL *s, int fd)
1173 BIO *rbio = SSL_get_rbio(s);
1175 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1176 || (int)BIO_get_fd(rbio, NULL) != fd) {
1177 BIO *bio = BIO_new(BIO_s_socket());
1180 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1183 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1184 SSL_set0_wbio(s, bio);
1187 SSL_set0_wbio(s, rbio);
1192 int SSL_set_rfd(SSL *s, int fd)
1194 BIO *wbio = SSL_get_wbio(s);
1196 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1197 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1198 BIO *bio = BIO_new(BIO_s_socket());
1201 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1204 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1205 SSL_set0_rbio(s, bio);
1208 SSL_set0_rbio(s, wbio);
1215 /* return length of latest Finished message we sent, copy to 'buf' */
1216 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1220 if (s->s3 != NULL) {
1221 ret = s->s3->tmp.finish_md_len;
1224 memcpy(buf, s->s3->tmp.finish_md, count);
1229 /* return length of latest Finished message we expected, copy to 'buf' */
1230 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1234 if (s->s3 != NULL) {
1235 ret = s->s3->tmp.peer_finish_md_len;
1238 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1243 int SSL_get_verify_mode(const SSL *s)
1245 return (s->verify_mode);
1248 int SSL_get_verify_depth(const SSL *s)
1250 return X509_VERIFY_PARAM_get_depth(s->param);
1253 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1254 return (s->verify_callback);
1257 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1259 return (ctx->verify_mode);
1262 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1264 return X509_VERIFY_PARAM_get_depth(ctx->param);
1267 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1268 return (ctx->default_verify_callback);
1271 void SSL_set_verify(SSL *s, int mode,
1272 int (*callback) (int ok, X509_STORE_CTX *ctx))
1274 s->verify_mode = mode;
1275 if (callback != NULL)
1276 s->verify_callback = callback;
1279 void SSL_set_verify_depth(SSL *s, int depth)
1281 X509_VERIFY_PARAM_set_depth(s->param, depth);
1284 void SSL_set_read_ahead(SSL *s, int yes)
1286 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1289 int SSL_get_read_ahead(const SSL *s)
1291 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1294 int SSL_pending(const SSL *s)
1297 * SSL_pending cannot work properly if read-ahead is enabled
1298 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1299 * impossible to fix since SSL_pending cannot report errors that may be
1300 * observed while scanning the new data. (Note that SSL_pending() is
1301 * often used as a boolean value, so we'd better not return -1.)
1303 return (s->method->ssl_pending(s));
1306 int SSL_has_pending(const SSL *s)
1309 * Similar to SSL_pending() but returns a 1 to indicate that we have
1310 * unprocessed data available or 0 otherwise (as opposed to the number of
1311 * bytes available). Unlike SSL_pending() this will take into account
1312 * read_ahead data. A 1 return simply indicates that we have unprocessed
1313 * data. That data may not result in any application data, or we may fail
1314 * to parse the records for some reason.
1319 return RECORD_LAYER_read_pending(&s->rlayer);
1322 X509 *SSL_get_peer_certificate(const SSL *s)
1326 if ((s == NULL) || (s->session == NULL))
1329 r = s->session->peer;
1339 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1343 if ((s == NULL) || (s->session == NULL))
1346 r = s->session->peer_chain;
1349 * If we are a client, cert_chain includes the peer's own certificate; if
1350 * we are a server, it does not.
1357 * Now in theory, since the calling process own 't' it should be safe to
1358 * modify. We need to be able to read f without being hassled
1360 int SSL_copy_session_id(SSL *t, const SSL *f)
1363 /* Do we need to to SSL locking? */
1364 if (!SSL_set_session(t, SSL_get_session(f))) {
1369 * what if we are setup for one protocol version but want to talk another
1371 if (t->method != f->method) {
1372 t->method->ssl_free(t);
1373 t->method = f->method;
1374 if (t->method->ssl_new(t) == 0)
1378 CRYPTO_atomic_add(&f->cert->references, 1, &i, f->cert->lock);
1379 ssl_cert_free(t->cert);
1381 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
1388 /* Fix this so it checks all the valid key/cert options */
1389 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1391 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1392 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1395 if (ctx->cert->key->privatekey == NULL) {
1396 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1399 return (X509_check_private_key
1400 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1403 /* Fix this function so that it takes an optional type parameter */
1404 int SSL_check_private_key(const SSL *ssl)
1407 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1410 if (ssl->cert->key->x509 == NULL) {
1411 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1414 if (ssl->cert->key->privatekey == NULL) {
1415 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1418 return (X509_check_private_key(ssl->cert->key->x509,
1419 ssl->cert->key->privatekey));
1422 int SSL_waiting_for_async(SSL *s)
1430 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1432 ASYNC_WAIT_CTX *ctx = s->waitctx;
1436 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1439 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1440 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1442 ASYNC_WAIT_CTX *ctx = s->waitctx;
1446 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1450 int SSL_accept(SSL *s)
1452 if (s->handshake_func == NULL) {
1453 /* Not properly initialized yet */
1454 SSL_set_accept_state(s);
1457 return SSL_do_handshake(s);
1460 int SSL_connect(SSL *s)
1462 if (s->handshake_func == NULL) {
1463 /* Not properly initialized yet */
1464 SSL_set_connect_state(s);
1467 return SSL_do_handshake(s);
1470 long SSL_get_default_timeout(const SSL *s)
1472 return (s->method->get_timeout());
1475 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1476 int (*func) (void *))
1479 if (s->waitctx == NULL) {
1480 s->waitctx = ASYNC_WAIT_CTX_new();
1481 if (s->waitctx == NULL)
1484 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1485 sizeof(struct ssl_async_args))) {
1487 s->rwstate = SSL_NOTHING;
1488 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1491 s->rwstate = SSL_ASYNC_PAUSED;
1494 s->rwstate = SSL_ASYNC_NO_JOBS;
1500 s->rwstate = SSL_NOTHING;
1501 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1502 /* Shouldn't happen */
1507 static int ssl_io_intern(void *vargs)
1509 struct ssl_async_args *args;
1514 args = (struct ssl_async_args *)vargs;
1518 switch (args->type) {
1520 return args->f.func_read(s, buf, num, &s->asyncread);
1522 return args->f.func_write(s, buf, num);
1524 return args->f.func_other(s);
1529 int SSL_read(SSL *s, void *buf, int num)
1535 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1539 ret = SSL_read_ex(s, buf, (size_t)num, &read);
1542 * The cast is safe here because ret should be <= INT_MAX because num is
1551 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *read)
1553 if (s->handshake_func == NULL) {
1554 SSLerr(SSL_F_SSL_READ_EX, SSL_R_UNINITIALIZED);
1558 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1559 s->rwstate = SSL_NOTHING;
1563 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1564 struct ssl_async_args args;
1570 args.type = READFUNC;
1571 args.f.func_read = s->method->ssl_read;
1573 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1574 *read = s->asyncread;
1577 return s->method->ssl_read(s, buf, num, read);
1581 int SSL_peek(SSL *s, void *buf, int num)
1587 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1591 ret = SSL_peek_ex(s, buf, (size_t)num, &read);
1594 * The cast is safe here because ret should be <= INT_MAX because num is
1603 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *read)
1605 if (s->handshake_func == NULL) {
1606 SSLerr(SSL_F_SSL_PEEK_EX, SSL_R_UNINITIALIZED);
1610 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1613 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1614 struct ssl_async_args args;
1620 args.type = READFUNC;
1621 args.f.func_read = s->method->ssl_peek;
1623 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1624 *read = s->asyncread;
1627 return s->method->ssl_peek(s, buf, num, read);
1631 int SSL_write(SSL *s, const void *buf, int num)
1633 if (s->handshake_func == NULL) {
1634 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1638 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1639 s->rwstate = SSL_NOTHING;
1640 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1644 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1645 struct ssl_async_args args;
1648 args.buf = (void *)buf;
1650 args.type = WRITEFUNC;
1651 args.f.func_write = s->method->ssl_write;
1653 return ssl_start_async_job(s, &args, ssl_io_intern);
1655 return s->method->ssl_write(s, buf, num);
1659 int SSL_shutdown(SSL *s)
1662 * Note that this function behaves differently from what one might
1663 * expect. Return values are 0 for no success (yet), 1 for success; but
1664 * calling it once is usually not enough, even if blocking I/O is used
1665 * (see ssl3_shutdown).
1668 if (s->handshake_func == NULL) {
1669 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1673 if (!SSL_in_init(s)) {
1674 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1675 struct ssl_async_args args;
1678 args.type = OTHERFUNC;
1679 args.f.func_other = s->method->ssl_shutdown;
1681 return ssl_start_async_job(s, &args, ssl_io_intern);
1683 return s->method->ssl_shutdown(s);
1686 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1691 int SSL_renegotiate(SSL *s)
1693 if (s->renegotiate == 0)
1698 return (s->method->ssl_renegotiate(s));
1701 int SSL_renegotiate_abbreviated(SSL *s)
1703 if (s->renegotiate == 0)
1708 return (s->method->ssl_renegotiate(s));
1711 int SSL_renegotiate_pending(SSL *s)
1714 * becomes true when negotiation is requested; false again once a
1715 * handshake has finished
1717 return (s->renegotiate != 0);
1720 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1725 case SSL_CTRL_GET_READ_AHEAD:
1726 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1727 case SSL_CTRL_SET_READ_AHEAD:
1728 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1729 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1732 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1733 s->msg_callback_arg = parg;
1737 return (s->mode |= larg);
1738 case SSL_CTRL_CLEAR_MODE:
1739 return (s->mode &= ~larg);
1740 case SSL_CTRL_GET_MAX_CERT_LIST:
1741 return (s->max_cert_list);
1742 case SSL_CTRL_SET_MAX_CERT_LIST:
1743 l = s->max_cert_list;
1744 s->max_cert_list = larg;
1746 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1747 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1749 s->max_send_fragment = larg;
1750 if (s->max_send_fragment < s->split_send_fragment)
1751 s->split_send_fragment = s->max_send_fragment;
1753 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1754 if ((unsigned int)larg > s->max_send_fragment || larg == 0)
1756 s->split_send_fragment = larg;
1758 case SSL_CTRL_SET_MAX_PIPELINES:
1759 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1761 s->max_pipelines = larg;
1763 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
1765 case SSL_CTRL_GET_RI_SUPPORT:
1767 return s->s3->send_connection_binding;
1770 case SSL_CTRL_CERT_FLAGS:
1771 return (s->cert->cert_flags |= larg);
1772 case SSL_CTRL_CLEAR_CERT_FLAGS:
1773 return (s->cert->cert_flags &= ~larg);
1775 case SSL_CTRL_GET_RAW_CIPHERLIST:
1777 if (s->s3->tmp.ciphers_raw == NULL)
1779 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1780 return (int)s->s3->tmp.ciphers_rawlen;
1782 return TLS_CIPHER_LEN;
1784 case SSL_CTRL_GET_EXTMS_SUPPORT:
1785 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1787 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1791 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1792 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1793 &s->min_proto_version);
1794 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1795 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1796 &s->max_proto_version);
1798 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1802 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1805 case SSL_CTRL_SET_MSG_CALLBACK:
1806 s->msg_callback = (void (*)
1807 (int write_p, int version, int content_type,
1808 const void *buf, size_t len, SSL *ssl,
1813 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1817 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1819 return ctx->sessions;
1822 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1825 /* For some cases with ctx == NULL perform syntax checks */
1828 #ifndef OPENSSL_NO_EC
1829 case SSL_CTRL_SET_CURVES_LIST:
1830 return tls1_set_curves_list(NULL, NULL, parg);
1832 case SSL_CTRL_SET_SIGALGS_LIST:
1833 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1834 return tls1_set_sigalgs_list(NULL, parg, 0);
1841 case SSL_CTRL_GET_READ_AHEAD:
1842 return (ctx->read_ahead);
1843 case SSL_CTRL_SET_READ_AHEAD:
1844 l = ctx->read_ahead;
1845 ctx->read_ahead = larg;
1848 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1849 ctx->msg_callback_arg = parg;
1852 case SSL_CTRL_GET_MAX_CERT_LIST:
1853 return (ctx->max_cert_list);
1854 case SSL_CTRL_SET_MAX_CERT_LIST:
1855 l = ctx->max_cert_list;
1856 ctx->max_cert_list = larg;
1859 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1860 l = ctx->session_cache_size;
1861 ctx->session_cache_size = larg;
1863 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1864 return (ctx->session_cache_size);
1865 case SSL_CTRL_SET_SESS_CACHE_MODE:
1866 l = ctx->session_cache_mode;
1867 ctx->session_cache_mode = larg;
1869 case SSL_CTRL_GET_SESS_CACHE_MODE:
1870 return (ctx->session_cache_mode);
1872 case SSL_CTRL_SESS_NUMBER:
1873 return (lh_SSL_SESSION_num_items(ctx->sessions));
1874 case SSL_CTRL_SESS_CONNECT:
1875 return (ctx->stats.sess_connect);
1876 case SSL_CTRL_SESS_CONNECT_GOOD:
1877 return (ctx->stats.sess_connect_good);
1878 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1879 return (ctx->stats.sess_connect_renegotiate);
1880 case SSL_CTRL_SESS_ACCEPT:
1881 return (ctx->stats.sess_accept);
1882 case SSL_CTRL_SESS_ACCEPT_GOOD:
1883 return (ctx->stats.sess_accept_good);
1884 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1885 return (ctx->stats.sess_accept_renegotiate);
1886 case SSL_CTRL_SESS_HIT:
1887 return (ctx->stats.sess_hit);
1888 case SSL_CTRL_SESS_CB_HIT:
1889 return (ctx->stats.sess_cb_hit);
1890 case SSL_CTRL_SESS_MISSES:
1891 return (ctx->stats.sess_miss);
1892 case SSL_CTRL_SESS_TIMEOUTS:
1893 return (ctx->stats.sess_timeout);
1894 case SSL_CTRL_SESS_CACHE_FULL:
1895 return (ctx->stats.sess_cache_full);
1897 return (ctx->mode |= larg);
1898 case SSL_CTRL_CLEAR_MODE:
1899 return (ctx->mode &= ~larg);
1900 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1901 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1903 ctx->max_send_fragment = larg;
1904 if (ctx->max_send_fragment < ctx->split_send_fragment)
1905 ctx->split_send_fragment = ctx->max_send_fragment;
1907 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1908 if ((unsigned int)larg > ctx->max_send_fragment || larg == 0)
1910 ctx->split_send_fragment = larg;
1912 case SSL_CTRL_SET_MAX_PIPELINES:
1913 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1915 ctx->max_pipelines = larg;
1917 case SSL_CTRL_CERT_FLAGS:
1918 return (ctx->cert->cert_flags |= larg);
1919 case SSL_CTRL_CLEAR_CERT_FLAGS:
1920 return (ctx->cert->cert_flags &= ~larg);
1921 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1922 return ssl_set_version_bound(ctx->method->version, (int)larg,
1923 &ctx->min_proto_version);
1924 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1925 return ssl_set_version_bound(ctx->method->version, (int)larg,
1926 &ctx->max_proto_version);
1928 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1932 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1935 case SSL_CTRL_SET_MSG_CALLBACK:
1936 ctx->msg_callback = (void (*)
1937 (int write_p, int version, int content_type,
1938 const void *buf, size_t len, SSL *ssl,
1943 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1947 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1956 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1957 const SSL_CIPHER *const *bp)
1959 if ((*ap)->id > (*bp)->id)
1961 if ((*ap)->id < (*bp)->id)
1966 /** return a STACK of the ciphers available for the SSL and in order of
1968 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1971 if (s->cipher_list != NULL) {
1972 return (s->cipher_list);
1973 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1974 return (s->ctx->cipher_list);
1980 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
1982 if ((s == NULL) || (s->session == NULL) || !s->server)
1984 return s->session->ciphers;
1987 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1989 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1991 ciphers = SSL_get_ciphers(s);
1994 ssl_set_client_disabled(s);
1995 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1996 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1997 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1999 sk = sk_SSL_CIPHER_new_null();
2002 if (!sk_SSL_CIPHER_push(sk, c)) {
2003 sk_SSL_CIPHER_free(sk);
2011 /** return a STACK of the ciphers available for the SSL and in order of
2013 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2016 if (s->cipher_list_by_id != NULL) {
2017 return (s->cipher_list_by_id);
2018 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2019 return (s->ctx->cipher_list_by_id);
2025 /** The old interface to get the same thing as SSL_get_ciphers() */
2026 const char *SSL_get_cipher_list(const SSL *s, int n)
2028 const SSL_CIPHER *c;
2029 STACK_OF(SSL_CIPHER) *sk;
2033 sk = SSL_get_ciphers(s);
2034 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2036 c = sk_SSL_CIPHER_value(sk, n);
2042 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2044 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2047 return ctx->cipher_list;
2051 /** specify the ciphers to be used by default by the SSL_CTX */
2052 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2054 STACK_OF(SSL_CIPHER) *sk;
2056 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2057 &ctx->cipher_list_by_id, str, ctx->cert);
2059 * ssl_create_cipher_list may return an empty stack if it was unable to
2060 * find a cipher matching the given rule string (for example if the rule
2061 * string specifies a cipher which has been disabled). This is not an
2062 * error as far as ssl_create_cipher_list is concerned, and hence
2063 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2067 else if (sk_SSL_CIPHER_num(sk) == 0) {
2068 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2074 /** specify the ciphers to be used by the SSL */
2075 int SSL_set_cipher_list(SSL *s, const char *str)
2077 STACK_OF(SSL_CIPHER) *sk;
2079 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2080 &s->cipher_list_by_id, str, s->cert);
2081 /* see comment in SSL_CTX_set_cipher_list */
2084 else if (sk_SSL_CIPHER_num(sk) == 0) {
2085 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2091 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2094 STACK_OF(SSL_CIPHER) *sk;
2095 const SSL_CIPHER *c;
2098 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2102 sk = s->session->ciphers;
2104 if (sk_SSL_CIPHER_num(sk) == 0)
2107 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2110 c = sk_SSL_CIPHER_value(sk, i);
2111 n = strlen(c->name);
2118 memcpy(p, c->name, n + 1);
2127 /** return a servername extension value if provided in Client Hello, or NULL.
2128 * So far, only host_name types are defined (RFC 3546).
2131 const char *SSL_get_servername(const SSL *s, const int type)
2133 if (type != TLSEXT_NAMETYPE_host_name)
2136 return s->session && !s->tlsext_hostname ?
2137 s->session->tlsext_hostname : s->tlsext_hostname;
2140 int SSL_get_servername_type(const SSL *s)
2143 && (!s->tlsext_hostname ? s->session->
2144 tlsext_hostname : s->tlsext_hostname))
2145 return TLSEXT_NAMETYPE_host_name;
2150 * SSL_select_next_proto implements the standard protocol selection. It is
2151 * expected that this function is called from the callback set by
2152 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2153 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2154 * not included in the length. A byte string of length 0 is invalid. No byte
2155 * string may be truncated. The current, but experimental algorithm for
2156 * selecting the protocol is: 1) If the server doesn't support NPN then this
2157 * is indicated to the callback. In this case, the client application has to
2158 * abort the connection or have a default application level protocol. 2) If
2159 * the server supports NPN, but advertises an empty list then the client
2160 * selects the first protocol in its list, but indicates via the API that this
2161 * fallback case was enacted. 3) Otherwise, the client finds the first
2162 * protocol in the server's list that it supports and selects this protocol.
2163 * This is because it's assumed that the server has better information about
2164 * which protocol a client should use. 4) If the client doesn't support any
2165 * of the server's advertised protocols, then this is treated the same as
2166 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2167 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2169 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2170 const unsigned char *server,
2171 unsigned int server_len,
2172 const unsigned char *client, unsigned int client_len)
2175 const unsigned char *result;
2176 int status = OPENSSL_NPN_UNSUPPORTED;
2179 * For each protocol in server preference order, see if we support it.
2181 for (i = 0; i < server_len;) {
2182 for (j = 0; j < client_len;) {
2183 if (server[i] == client[j] &&
2184 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2185 /* We found a match */
2186 result = &server[i];
2187 status = OPENSSL_NPN_NEGOTIATED;
2197 /* There's no overlap between our protocols and the server's list. */
2199 status = OPENSSL_NPN_NO_OVERLAP;
2202 *out = (unsigned char *)result + 1;
2203 *outlen = result[0];
2207 #ifndef OPENSSL_NO_NEXTPROTONEG
2209 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2210 * client's requested protocol for this connection and returns 0. If the
2211 * client didn't request any protocol, then *data is set to NULL. Note that
2212 * the client can request any protocol it chooses. The value returned from
2213 * this function need not be a member of the list of supported protocols
2214 * provided by the callback.
2216 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2219 *data = s->next_proto_negotiated;
2223 *len = s->next_proto_negotiated_len;
2228 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
2229 * a TLS server needs a list of supported protocols for Next Protocol
2230 * Negotiation. The returned list must be in wire format. The list is
2231 * returned by setting |out| to point to it and |outlen| to its length. This
2232 * memory will not be modified, but one should assume that the SSL* keeps a
2233 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2234 * wishes to advertise. Otherwise, no such extension will be included in the
2237 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
2238 int (*cb) (SSL *ssl,
2241 unsigned int *outlen,
2242 void *arg), void *arg)
2244 ctx->next_protos_advertised_cb = cb;
2245 ctx->next_protos_advertised_cb_arg = arg;
2249 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2250 * client needs to select a protocol from the server's provided list. |out|
2251 * must be set to point to the selected protocol (which may be within |in|).
2252 * The length of the protocol name must be written into |outlen|. The
2253 * server's advertised protocols are provided in |in| and |inlen|. The
2254 * callback can assume that |in| is syntactically valid. The client must
2255 * select a protocol. It is fatal to the connection if this callback returns
2256 * a value other than SSL_TLSEXT_ERR_OK.
2258 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
2259 int (*cb) (SSL *s, unsigned char **out,
2260 unsigned char *outlen,
2261 const unsigned char *in,
2263 void *arg), void *arg)
2265 ctx->next_proto_select_cb = cb;
2266 ctx->next_proto_select_cb_arg = arg;
2271 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2272 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2273 * length-prefixed strings). Returns 0 on success.
2275 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2276 unsigned int protos_len)
2278 OPENSSL_free(ctx->alpn_client_proto_list);
2279 ctx->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2280 if (ctx->alpn_client_proto_list == NULL) {
2281 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2284 ctx->alpn_client_proto_list_len = protos_len;
2290 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2291 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2292 * length-prefixed strings). Returns 0 on success.
2294 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2295 unsigned int protos_len)
2297 OPENSSL_free(ssl->alpn_client_proto_list);
2298 ssl->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2299 if (ssl->alpn_client_proto_list == NULL) {
2300 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2303 ssl->alpn_client_proto_list_len = protos_len;
2309 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2310 * called during ClientHello processing in order to select an ALPN protocol
2311 * from the client's list of offered protocols.
2313 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2314 int (*cb) (SSL *ssl,
2315 const unsigned char **out,
2316 unsigned char *outlen,
2317 const unsigned char *in,
2319 void *arg), void *arg)
2321 ctx->alpn_select_cb = cb;
2322 ctx->alpn_select_cb_arg = arg;
2326 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2327 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2328 * (not including the leading length-prefix byte). If the server didn't
2329 * respond with a negotiated protocol then |*len| will be zero.
2331 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2336 *data = ssl->s3->alpn_selected;
2340 *len = ssl->s3->alpn_selected_len;
2343 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2344 const char *label, size_t llen,
2345 const unsigned char *p, size_t plen,
2348 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2351 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2356 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2361 ((unsigned int)a->session_id[0]) |
2362 ((unsigned int)a->session_id[1] << 8L) |
2363 ((unsigned long)a->session_id[2] << 16L) |
2364 ((unsigned long)a->session_id[3] << 24L);
2369 * NB: If this function (or indeed the hash function which uses a sort of
2370 * coarser function than this one) is changed, ensure
2371 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2372 * being able to construct an SSL_SESSION that will collide with any existing
2373 * session with a matching session ID.
2375 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2377 if (a->ssl_version != b->ssl_version)
2379 if (a->session_id_length != b->session_id_length)
2381 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2385 * These wrapper functions should remain rather than redeclaring
2386 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2387 * variable. The reason is that the functions aren't static, they're exposed
2391 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2393 SSL_CTX *ret = NULL;
2396 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2400 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2403 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
2404 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE);
2408 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2409 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2412 ret = OPENSSL_zalloc(sizeof(*ret));
2417 ret->min_proto_version = 0;
2418 ret->max_proto_version = 0;
2419 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2420 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2421 /* We take the system default. */
2422 ret->session_timeout = meth->get_timeout();
2423 ret->references = 1;
2424 ret->lock = CRYPTO_THREAD_lock_new();
2425 if (ret->lock == NULL) {
2426 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2430 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2431 ret->verify_mode = SSL_VERIFY_NONE;
2432 if ((ret->cert = ssl_cert_new()) == NULL)
2435 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2436 if (ret->sessions == NULL)
2438 ret->cert_store = X509_STORE_new();
2439 if (ret->cert_store == NULL)
2441 #ifndef OPENSSL_NO_CT
2442 ret->ctlog_store = CTLOG_STORE_new();
2443 if (ret->ctlog_store == NULL)
2446 if (!ssl_create_cipher_list(ret->method,
2447 &ret->cipher_list, &ret->cipher_list_by_id,
2448 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2449 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2450 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2454 ret->param = X509_VERIFY_PARAM_new();
2455 if (ret->param == NULL)
2458 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2459 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2462 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2463 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2467 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
2470 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2473 /* No compression for DTLS */
2474 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2475 ret->comp_methods = SSL_COMP_get_compression_methods();
2477 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2478 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2480 /* Setup RFC5077 ticket keys */
2481 if ((RAND_bytes(ret->tlsext_tick_key_name,
2482 sizeof(ret->tlsext_tick_key_name)) <= 0)
2483 || (RAND_bytes(ret->tlsext_tick_hmac_key,
2484 sizeof(ret->tlsext_tick_hmac_key)) <= 0)
2485 || (RAND_bytes(ret->tlsext_tick_aes_key,
2486 sizeof(ret->tlsext_tick_aes_key)) <= 0))
2487 ret->options |= SSL_OP_NO_TICKET;
2489 #ifndef OPENSSL_NO_SRP
2490 if (!SSL_CTX_SRP_CTX_init(ret))
2493 #ifndef OPENSSL_NO_ENGINE
2494 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2495 # define eng_strx(x) #x
2496 # define eng_str(x) eng_strx(x)
2497 /* Use specific client engine automatically... ignore errors */
2500 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2503 ENGINE_load_builtin_engines();
2504 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2506 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2512 * Default is to connect to non-RI servers. When RI is more widely
2513 * deployed might change this.
2515 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2517 * Disable compression by default to prevent CRIME. Applications can
2518 * re-enable compression by configuring
2519 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2520 * or by using the SSL_CONF library.
2522 ret->options |= SSL_OP_NO_COMPRESSION;
2524 ret->tlsext_status_type = -1;
2528 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2534 int SSL_CTX_up_ref(SSL_CTX *ctx)
2538 if (CRYPTO_atomic_add(&ctx->references, 1, &i, ctx->lock) <= 0)
2541 REF_PRINT_COUNT("SSL_CTX", ctx);
2542 REF_ASSERT_ISNT(i < 2);
2543 return ((i > 1) ? 1 : 0);
2546 void SSL_CTX_free(SSL_CTX *a)
2553 CRYPTO_atomic_add(&a->references, -1, &i, a->lock);
2554 REF_PRINT_COUNT("SSL_CTX", a);
2557 REF_ASSERT_ISNT(i < 0);
2559 X509_VERIFY_PARAM_free(a->param);
2560 dane_ctx_final(&a->dane);
2563 * Free internal session cache. However: the remove_cb() may reference
2564 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2565 * after the sessions were flushed.
2566 * As the ex_data handling routines might also touch the session cache,
2567 * the most secure solution seems to be: empty (flush) the cache, then
2568 * free ex_data, then finally free the cache.
2569 * (See ticket [openssl.org #212].)
2571 if (a->sessions != NULL)
2572 SSL_CTX_flush_sessions(a, 0);
2574 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2575 lh_SSL_SESSION_free(a->sessions);
2576 X509_STORE_free(a->cert_store);
2577 #ifndef OPENSSL_NO_CT
2578 CTLOG_STORE_free(a->ctlog_store);
2580 sk_SSL_CIPHER_free(a->cipher_list);
2581 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2582 ssl_cert_free(a->cert);
2583 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2584 sk_X509_pop_free(a->extra_certs, X509_free);
2585 a->comp_methods = NULL;
2586 #ifndef OPENSSL_NO_SRTP
2587 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2589 #ifndef OPENSSL_NO_SRP
2590 SSL_CTX_SRP_CTX_free(a);
2592 #ifndef OPENSSL_NO_ENGINE
2593 ENGINE_finish(a->client_cert_engine);
2596 #ifndef OPENSSL_NO_EC
2597 OPENSSL_free(a->tlsext_ecpointformatlist);
2598 OPENSSL_free(a->tlsext_ellipticcurvelist);
2600 OPENSSL_free(a->alpn_client_proto_list);
2602 CRYPTO_THREAD_lock_free(a->lock);
2607 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2609 ctx->default_passwd_callback = cb;
2612 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2614 ctx->default_passwd_callback_userdata = u;
2617 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2619 return ctx->default_passwd_callback;
2622 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2624 return ctx->default_passwd_callback_userdata;
2627 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2629 s->default_passwd_callback = cb;
2632 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2634 s->default_passwd_callback_userdata = u;
2637 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2639 return s->default_passwd_callback;
2642 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2644 return s->default_passwd_callback_userdata;
2647 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2648 int (*cb) (X509_STORE_CTX *, void *),
2651 ctx->app_verify_callback = cb;
2652 ctx->app_verify_arg = arg;
2655 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2656 int (*cb) (int, X509_STORE_CTX *))
2658 ctx->verify_mode = mode;
2659 ctx->default_verify_callback = cb;
2662 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2664 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2667 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
2669 ssl_cert_set_cert_cb(c->cert, cb, arg);
2672 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2674 ssl_cert_set_cert_cb(s->cert, cb, arg);
2677 void ssl_set_masks(SSL *s)
2679 #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST)
2683 uint32_t *pvalid = s->s3->tmp.valid_flags;
2684 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
2685 unsigned long mask_k, mask_a;
2686 #ifndef OPENSSL_NO_EC
2687 int have_ecc_cert, ecdsa_ok;
2693 #ifndef OPENSSL_NO_DH
2694 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2699 rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
2700 rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
2701 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
2702 #ifndef OPENSSL_NO_EC
2703 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2709 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
2710 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
2713 #ifndef OPENSSL_NO_GOST
2714 cpk = &(c->pkeys[SSL_PKEY_GOST12_512]);
2715 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2716 mask_k |= SSL_kGOST;
2717 mask_a |= SSL_aGOST12;
2719 cpk = &(c->pkeys[SSL_PKEY_GOST12_256]);
2720 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2721 mask_k |= SSL_kGOST;
2722 mask_a |= SSL_aGOST12;
2724 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2725 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2726 mask_k |= SSL_kGOST;
2727 mask_a |= SSL_aGOST01;
2737 if (rsa_enc || rsa_sign) {
2745 mask_a |= SSL_aNULL;
2748 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2749 * depending on the key usage extension.
2751 #ifndef OPENSSL_NO_EC
2752 if (have_ecc_cert) {
2754 cpk = &c->pkeys[SSL_PKEY_ECC];
2756 ex_kusage = X509_get_key_usage(x);
2757 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2758 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2761 mask_a |= SSL_aECDSA;
2765 #ifndef OPENSSL_NO_EC
2766 mask_k |= SSL_kECDHE;
2769 #ifndef OPENSSL_NO_PSK
2772 if (mask_k & SSL_kRSA)
2773 mask_k |= SSL_kRSAPSK;
2774 if (mask_k & SSL_kDHE)
2775 mask_k |= SSL_kDHEPSK;
2776 if (mask_k & SSL_kECDHE)
2777 mask_k |= SSL_kECDHEPSK;
2780 s->s3->tmp.mask_k = mask_k;
2781 s->s3->tmp.mask_a = mask_a;
2784 #ifndef OPENSSL_NO_EC
2786 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2788 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
2789 /* key usage, if present, must allow signing */
2790 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
2791 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2792 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2796 return 1; /* all checks are ok */
2801 static int ssl_get_server_cert_index(const SSL *s)
2804 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2805 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2806 idx = SSL_PKEY_RSA_SIGN;
2807 if (idx == SSL_PKEY_GOST_EC) {
2808 if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)
2809 idx = SSL_PKEY_GOST12_512;
2810 else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509)
2811 idx = SSL_PKEY_GOST12_256;
2812 else if (s->cert->pkeys[SSL_PKEY_GOST01].x509)
2813 idx = SSL_PKEY_GOST01;
2818 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2822 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2828 if (!s->s3 || !s->s3->tmp.new_cipher)
2832 i = ssl_get_server_cert_index(s);
2834 /* This may or may not be an error. */
2839 return &c->pkeys[i];
2842 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2845 unsigned long alg_a;
2849 alg_a = cipher->algorithm_auth;
2852 if ((alg_a & SSL_aDSS) && (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2853 idx = SSL_PKEY_DSA_SIGN;
2854 else if (alg_a & SSL_aRSA) {
2855 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2856 idx = SSL_PKEY_RSA_SIGN;
2857 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2858 idx = SSL_PKEY_RSA_ENC;
2859 } else if ((alg_a & SSL_aECDSA) &&
2860 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2863 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2867 *pmd = s->s3->tmp.md[idx];
2868 return c->pkeys[idx].privatekey;
2871 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2872 size_t *serverinfo_length)
2876 *serverinfo_length = 0;
2879 i = ssl_get_server_cert_index(s);
2883 if (c->pkeys[i].serverinfo == NULL)
2886 *serverinfo = c->pkeys[i].serverinfo;
2887 *serverinfo_length = c->pkeys[i].serverinfo_length;
2891 void ssl_update_cache(SSL *s, int mode)
2896 * If the session_id_length is 0, we are not supposed to cache it, and it
2897 * would be rather hard to do anyway :-)
2899 if (s->session->session_id_length == 0)
2902 i = s->session_ctx->session_cache_mode;
2903 if ((i & mode) && (!s->hit)
2904 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2905 || SSL_CTX_add_session(s->session_ctx, s->session))
2906 && (s->session_ctx->new_session_cb != NULL)) {
2907 SSL_SESSION_up_ref(s->session);
2908 if (!s->session_ctx->new_session_cb(s, s->session))
2909 SSL_SESSION_free(s->session);
2912 /* auto flush every 255 connections */
2913 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2914 if ((((mode & SSL_SESS_CACHE_CLIENT)
2915 ? s->session_ctx->stats.sess_connect_good
2916 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2917 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2922 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2927 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2932 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2936 if (s->method != meth) {
2937 const SSL_METHOD *sm = s->method;
2938 int (*hf) (SSL *) = s->handshake_func;
2940 if (sm->version == meth->version)
2945 ret = s->method->ssl_new(s);
2948 if (hf == sm->ssl_connect)
2949 s->handshake_func = meth->ssl_connect;
2950 else if (hf == sm->ssl_accept)
2951 s->handshake_func = meth->ssl_accept;
2956 int SSL_get_error(const SSL *s, int i)
2963 return (SSL_ERROR_NONE);
2966 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2967 * where we do encode the error
2969 if ((l = ERR_peek_error()) != 0) {
2970 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2971 return (SSL_ERROR_SYSCALL);
2973 return (SSL_ERROR_SSL);
2977 if (SSL_want_read(s)) {
2978 bio = SSL_get_rbio(s);
2979 if (BIO_should_read(bio))
2980 return (SSL_ERROR_WANT_READ);
2981 else if (BIO_should_write(bio))
2983 * This one doesn't make too much sense ... We never try to write
2984 * to the rbio, and an application program where rbio and wbio
2985 * are separate couldn't even know what it should wait for.
2986 * However if we ever set s->rwstate incorrectly (so that we have
2987 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2988 * wbio *are* the same, this test works around that bug; so it
2989 * might be safer to keep it.
2991 return (SSL_ERROR_WANT_WRITE);
2992 else if (BIO_should_io_special(bio)) {
2993 reason = BIO_get_retry_reason(bio);
2994 if (reason == BIO_RR_CONNECT)
2995 return (SSL_ERROR_WANT_CONNECT);
2996 else if (reason == BIO_RR_ACCEPT)
2997 return (SSL_ERROR_WANT_ACCEPT);
2999 return (SSL_ERROR_SYSCALL); /* unknown */
3003 if (SSL_want_write(s)) {
3005 * Access wbio directly - in order to use the buffered bio if
3009 if (BIO_should_write(bio))
3010 return (SSL_ERROR_WANT_WRITE);
3011 else if (BIO_should_read(bio))
3013 * See above (SSL_want_read(s) with BIO_should_write(bio))
3015 return (SSL_ERROR_WANT_READ);
3016 else if (BIO_should_io_special(bio)) {
3017 reason = BIO_get_retry_reason(bio);
3018 if (reason == BIO_RR_CONNECT)
3019 return (SSL_ERROR_WANT_CONNECT);
3020 else if (reason == BIO_RR_ACCEPT)
3021 return (SSL_ERROR_WANT_ACCEPT);
3023 return (SSL_ERROR_SYSCALL);
3026 if (SSL_want_x509_lookup(s)) {
3027 return (SSL_ERROR_WANT_X509_LOOKUP);
3029 if (SSL_want_async(s)) {
3030 return SSL_ERROR_WANT_ASYNC;
3032 if (SSL_want_async_job(s)) {
3033 return SSL_ERROR_WANT_ASYNC_JOB;
3038 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3039 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3040 return (SSL_ERROR_ZERO_RETURN);
3042 return (SSL_ERROR_SYSCALL);
3045 static int ssl_do_handshake_intern(void *vargs)
3047 struct ssl_async_args *args;
3050 args = (struct ssl_async_args *)vargs;
3053 return s->handshake_func(s);
3056 int SSL_do_handshake(SSL *s)
3060 if (s->handshake_func == NULL) {
3061 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3065 s->method->ssl_renegotiate_check(s);
3067 if (SSL_in_init(s) || SSL_in_before(s)) {
3068 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3069 struct ssl_async_args args;
3073 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3075 ret = s->handshake_func(s);
3081 void SSL_set_accept_state(SSL *s)
3085 ossl_statem_clear(s);
3086 s->handshake_func = s->method->ssl_accept;
3090 void SSL_set_connect_state(SSL *s)
3094 ossl_statem_clear(s);
3095 s->handshake_func = s->method->ssl_connect;
3099 int ssl_undefined_function(SSL *s)
3101 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3105 int ssl_undefined_void_function(void)
3107 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3108 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3112 int ssl_undefined_const_function(const SSL *s)
3117 const SSL_METHOD *ssl_bad_method(int ver)
3119 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3123 const char *ssl_protocol_to_string(int version)
3127 case TLS1_3_VERSION:
3130 case TLS1_2_VERSION:
3133 case TLS1_1_VERSION:
3148 case DTLS1_2_VERSION:
3156 const char *SSL_get_version(const SSL *s)
3158 return ssl_protocol_to_string(s->version);
3161 SSL *SSL_dup(SSL *s)
3163 STACK_OF(X509_NAME) *sk;
3168 /* If we're not quiescent, just up_ref! */
3169 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3170 CRYPTO_atomic_add(&s->references, 1, &i, s->lock);
3175 * Otherwise, copy configuration state, and session if set.
3177 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3180 if (s->session != NULL) {
3182 * Arranges to share the same session via up_ref. This "copies"
3183 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3185 if (!SSL_copy_session_id(ret, s))
3189 * No session has been established yet, so we have to expect that
3190 * s->cert or ret->cert will be changed later -- they should not both
3191 * point to the same object, and thus we can't use
3192 * SSL_copy_session_id.
3194 if (!SSL_set_ssl_method(ret, s->method))
3197 if (s->cert != NULL) {
3198 ssl_cert_free(ret->cert);
3199 ret->cert = ssl_cert_dup(s->cert);
3200 if (ret->cert == NULL)
3204 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
3208 if (!ssl_dane_dup(ret, s))
3210 ret->version = s->version;
3211 ret->options = s->options;
3212 ret->mode = s->mode;
3213 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3214 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3215 ret->msg_callback = s->msg_callback;
3216 ret->msg_callback_arg = s->msg_callback_arg;
3217 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3218 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3219 ret->generate_session_id = s->generate_session_id;
3221 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3223 /* copy app data, a little dangerous perhaps */
3224 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3227 /* setup rbio, and wbio */
3228 if (s->rbio != NULL) {
3229 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3232 if (s->wbio != NULL) {
3233 if (s->wbio != s->rbio) {
3234 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3237 BIO_up_ref(ret->rbio);
3238 ret->wbio = ret->rbio;
3242 ret->server = s->server;
3243 if (s->handshake_func) {
3245 SSL_set_accept_state(ret);
3247 SSL_set_connect_state(ret);
3249 ret->shutdown = s->shutdown;
3252 ret->default_passwd_callback = s->default_passwd_callback;
3253 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3255 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3257 /* dup the cipher_list and cipher_list_by_id stacks */
3258 if (s->cipher_list != NULL) {
3259 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3262 if (s->cipher_list_by_id != NULL)
3263 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3267 /* Dup the client_CA list */
3268 if (s->client_CA != NULL) {
3269 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
3271 ret->client_CA = sk;
3272 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3273 xn = sk_X509_NAME_value(sk, i);
3274 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3287 void ssl_clear_cipher_ctx(SSL *s)
3289 if (s->enc_read_ctx != NULL) {
3290 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3291 s->enc_read_ctx = NULL;
3293 if (s->enc_write_ctx != NULL) {
3294 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3295 s->enc_write_ctx = NULL;
3297 #ifndef OPENSSL_NO_COMP
3298 COMP_CTX_free(s->expand);
3300 COMP_CTX_free(s->compress);
3305 X509 *SSL_get_certificate(const SSL *s)
3307 if (s->cert != NULL)
3308 return (s->cert->key->x509);
3313 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3315 if (s->cert != NULL)
3316 return (s->cert->key->privatekey);
3321 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3323 if (ctx->cert != NULL)
3324 return ctx->cert->key->x509;
3329 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3331 if (ctx->cert != NULL)
3332 return ctx->cert->key->privatekey;
3337 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3339 if ((s->session != NULL) && (s->session->cipher != NULL))
3340 return (s->session->cipher);
3344 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3346 #ifndef OPENSSL_NO_COMP
3347 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3353 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3355 #ifndef OPENSSL_NO_COMP
3356 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3362 int ssl_init_wbio_buffer(SSL *s)
3366 if (s->bbio != NULL) {
3367 /* Already buffered. */
3371 bbio = BIO_new(BIO_f_buffer());
3372 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3374 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3378 s->wbio = BIO_push(bbio, s->wbio);
3383 void ssl_free_wbio_buffer(SSL *s)
3385 /* callers ensure s is never null */
3386 if (s->bbio == NULL)
3389 s->wbio = BIO_pop(s->wbio);
3390 assert(s->wbio != NULL);
3395 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3397 ctx->quiet_shutdown = mode;
3400 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3402 return (ctx->quiet_shutdown);
3405 void SSL_set_quiet_shutdown(SSL *s, int mode)
3407 s->quiet_shutdown = mode;
3410 int SSL_get_quiet_shutdown(const SSL *s)
3412 return (s->quiet_shutdown);
3415 void SSL_set_shutdown(SSL *s, int mode)
3420 int SSL_get_shutdown(const SSL *s)
3425 int SSL_version(const SSL *s)
3430 int SSL_client_version(const SSL *s)
3432 return s->client_version;
3435 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3440 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3443 if (ssl->ctx == ctx)
3446 ctx = ssl->initial_ctx;
3447 new_cert = ssl_cert_dup(ctx->cert);
3448 if (new_cert == NULL) {
3451 ssl_cert_free(ssl->cert);
3452 ssl->cert = new_cert;
3455 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3456 * so setter APIs must prevent invalid lengths from entering the system.
3458 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3461 * If the session ID context matches that of the parent SSL_CTX,
3462 * inherit it from the new SSL_CTX as well. If however the context does
3463 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3464 * leave it unchanged.
3466 if ((ssl->ctx != NULL) &&
3467 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3468 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3469 ssl->sid_ctx_length = ctx->sid_ctx_length;
3470 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3473 SSL_CTX_up_ref(ctx);
3474 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3480 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3482 return (X509_STORE_set_default_paths(ctx->cert_store));
3485 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3487 X509_LOOKUP *lookup;
3489 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3492 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3494 /* Clear any errors if the default directory does not exist */
3500 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3502 X509_LOOKUP *lookup;
3504 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3508 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3510 /* Clear any errors if the default file does not exist */
3516 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3519 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3522 void SSL_set_info_callback(SSL *ssl,
3523 void (*cb) (const SSL *ssl, int type, int val))
3525 ssl->info_callback = cb;
3529 * One compiler (Diab DCC) doesn't like argument names in returned function
3532 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3535 return ssl->info_callback;
3538 void SSL_set_verify_result(SSL *ssl, long arg)
3540 ssl->verify_result = arg;
3543 long SSL_get_verify_result(const SSL *ssl)
3545 return (ssl->verify_result);
3548 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3551 return sizeof(ssl->s3->client_random);
3552 if (outlen > sizeof(ssl->s3->client_random))
3553 outlen = sizeof(ssl->s3->client_random);
3554 memcpy(out, ssl->s3->client_random, outlen);
3558 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3561 return sizeof(ssl->s3->server_random);
3562 if (outlen > sizeof(ssl->s3->server_random))
3563 outlen = sizeof(ssl->s3->server_random);
3564 memcpy(out, ssl->s3->server_random, outlen);
3568 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3569 unsigned char *out, size_t outlen)
3571 if (session->master_key_length < 0) {
3572 /* Should never happen */
3576 return session->master_key_length;
3577 if (outlen > (size_t)session->master_key_length)
3578 outlen = session->master_key_length;
3579 memcpy(out, session->master_key, outlen);
3583 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3585 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3588 void *SSL_get_ex_data(const SSL *s, int idx)
3590 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3593 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3595 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3598 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3600 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3608 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3610 return (ctx->cert_store);
3613 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3615 X509_STORE_free(ctx->cert_store);
3616 ctx->cert_store = store;
3619 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3622 X509_STORE_up_ref(store);
3623 SSL_CTX_set_cert_store(ctx, store);
3626 int SSL_want(const SSL *s)
3628 return (s->rwstate);
3632 * \brief Set the callback for generating temporary DH keys.
3633 * \param ctx the SSL context.
3634 * \param dh the callback
3637 #ifndef OPENSSL_NO_DH
3638 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3639 DH *(*dh) (SSL *ssl, int is_export,
3642 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3645 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3648 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3652 #ifndef OPENSSL_NO_PSK
3653 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3655 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3656 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3659 OPENSSL_free(ctx->cert->psk_identity_hint);
3660 if (identity_hint != NULL) {
3661 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3662 if (ctx->cert->psk_identity_hint == NULL)
3665 ctx->cert->psk_identity_hint = NULL;
3669 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3674 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3675 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3678 OPENSSL_free(s->cert->psk_identity_hint);
3679 if (identity_hint != NULL) {
3680 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3681 if (s->cert->psk_identity_hint == NULL)
3684 s->cert->psk_identity_hint = NULL;
3688 const char *SSL_get_psk_identity_hint(const SSL *s)
3690 if (s == NULL || s->session == NULL)
3692 return (s->session->psk_identity_hint);
3695 const char *SSL_get_psk_identity(const SSL *s)
3697 if (s == NULL || s->session == NULL)
3699 return (s->session->psk_identity);
3702 void SSL_set_psk_client_callback(SSL *s,
3703 unsigned int (*cb) (SSL *ssl,
3709 unsigned int max_psk_len))
3711 s->psk_client_callback = cb;
3714 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3715 unsigned int (*cb) (SSL *ssl,
3724 ctx->psk_client_callback = cb;
3727 void SSL_set_psk_server_callback(SSL *s,
3728 unsigned int (*cb) (SSL *ssl,
3729 const char *identity,
3731 unsigned int max_psk_len))
3733 s->psk_server_callback = cb;
3736 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3737 unsigned int (*cb) (SSL *ssl,
3738 const char *identity,
3743 ctx->psk_server_callback = cb;
3747 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3748 void (*cb) (int write_p, int version,
3749 int content_type, const void *buf,
3750 size_t len, SSL *ssl, void *arg))
3752 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3755 void SSL_set_msg_callback(SSL *ssl,
3756 void (*cb) (int write_p, int version,
3757 int content_type, const void *buf,
3758 size_t len, SSL *ssl, void *arg))
3760 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3763 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3764 int (*cb) (SSL *ssl,
3768 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3769 (void (*)(void))cb);
3772 void SSL_set_not_resumable_session_callback(SSL *ssl,
3773 int (*cb) (SSL *ssl,
3774 int is_forward_secure))
3776 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3777 (void (*)(void))cb);
3781 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3782 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
3783 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3787 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3789 ssl_clear_hash_ctx(hash);
3790 *hash = EVP_MD_CTX_new();
3791 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3792 EVP_MD_CTX_free(*hash);
3799 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3803 EVP_MD_CTX_free(*hash);
3807 /* Retrieve handshake hashes */
3808 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3810 EVP_MD_CTX *ctx = NULL;
3811 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
3812 int ret = EVP_MD_CTX_size(hdgst);
3813 if (ret < 0 || ret > outlen) {
3817 ctx = EVP_MD_CTX_new();
3822 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
3823 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
3826 EVP_MD_CTX_free(ctx);
3830 int SSL_session_reused(SSL *s)
3835 int SSL_is_server(SSL *s)
3840 #if OPENSSL_API_COMPAT < 0x10100000L
3841 void SSL_set_debug(SSL *s, int debug)
3843 /* Old function was do-nothing anyway... */
3849 void SSL_set_security_level(SSL *s, int level)
3851 s->cert->sec_level = level;
3854 int SSL_get_security_level(const SSL *s)
3856 return s->cert->sec_level;
3859 void SSL_set_security_callback(SSL *s,
3860 int (*cb) (const SSL *s, const SSL_CTX *ctx,
3861 int op, int bits, int nid,
3862 void *other, void *ex))
3864 s->cert->sec_cb = cb;
3867 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
3868 const SSL_CTX *ctx, int op,
3869 int bits, int nid, void *other,
3871 return s->cert->sec_cb;
3874 void SSL_set0_security_ex_data(SSL *s, void *ex)
3876 s->cert->sec_ex = ex;
3879 void *SSL_get0_security_ex_data(const SSL *s)
3881 return s->cert->sec_ex;
3884 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3886 ctx->cert->sec_level = level;
3889 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3891 return ctx->cert->sec_level;
3894 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3895 int (*cb) (const SSL *s, const SSL_CTX *ctx,
3896 int op, int bits, int nid,
3897 void *other, void *ex))
3899 ctx->cert->sec_cb = cb;
3902 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
3908 return ctx->cert->sec_cb;
3911 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3913 ctx->cert->sec_ex = ex;
3916 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3918 return ctx->cert->sec_ex;
3922 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3923 * can return unsigned long, instead of the generic long return value from the
3924 * control interface.
3926 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
3928 return ctx->options;
3931 unsigned long SSL_get_options(const SSL *s)
3936 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
3938 return ctx->options |= op;
3941 unsigned long SSL_set_options(SSL *s, unsigned long op)
3943 return s->options |= op;
3946 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
3948 return ctx->options &= ~op;
3951 unsigned long SSL_clear_options(SSL *s, unsigned long op)
3953 return s->options &= ~op;
3956 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
3958 return s->verified_chain;
3961 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
3963 #ifndef OPENSSL_NO_CT
3966 * Moves SCTs from the |src| stack to the |dst| stack.
3967 * The source of each SCT will be set to |origin|.
3968 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3970 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3972 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
3973 sct_source_t origin)
3979 *dst = sk_SCT_new_null();
3981 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
3986 while ((sct = sk_SCT_pop(src)) != NULL) {
3987 if (SCT_set_source(sct, origin) != 1)
3990 if (sk_SCT_push(*dst, sct) <= 0)
3998 sk_SCT_push(src, sct); /* Put the SCT back */
4003 * Look for data collected during ServerHello and parse if found.
4004 * Returns the number of SCTs extracted.
4006 static int ct_extract_tls_extension_scts(SSL *s)
4008 int scts_extracted = 0;
4010 if (s->tlsext_scts != NULL) {
4011 const unsigned char *p = s->tlsext_scts;
4012 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->tlsext_scts_len);
4014 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4016 SCT_LIST_free(scts);
4019 return scts_extracted;
4023 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4024 * contains an SCT X509 extension. They will be stored in |s->scts|.
4026 * - The number of SCTs extracted, assuming an OCSP response exists.
4027 * - 0 if no OCSP response exists or it contains no SCTs.
4028 * - A negative integer if an error occurs.
4030 static int ct_extract_ocsp_response_scts(SSL *s)
4032 # ifndef OPENSSL_NO_OCSP
4033 int scts_extracted = 0;
4034 const unsigned char *p;
4035 OCSP_BASICRESP *br = NULL;
4036 OCSP_RESPONSE *rsp = NULL;
4037 STACK_OF(SCT) *scts = NULL;
4040 if (s->tlsext_ocsp_resp == NULL || s->tlsext_ocsp_resplen == 0)
4043 p = s->tlsext_ocsp_resp;
4044 rsp = d2i_OCSP_RESPONSE(NULL, &p, s->tlsext_ocsp_resplen);
4048 br = OCSP_response_get1_basic(rsp);
4052 for (i = 0; i < OCSP_resp_count(br); ++i) {
4053 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4059 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4061 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4062 if (scts_extracted < 0)
4066 SCT_LIST_free(scts);
4067 OCSP_BASICRESP_free(br);
4068 OCSP_RESPONSE_free(rsp);
4069 return scts_extracted;
4071 /* Behave as if no OCSP response exists */
4077 * Attempts to extract SCTs from the peer certificate.
4078 * Return the number of SCTs extracted, or a negative integer if an error
4081 static int ct_extract_x509v3_extension_scts(SSL *s)
4083 int scts_extracted = 0;
4084 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4087 STACK_OF(SCT) *scts =
4088 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4091 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4093 SCT_LIST_free(scts);
4096 return scts_extracted;
4100 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4101 * response (if it exists) and X509v3 extensions in the certificate.
4102 * Returns NULL if an error occurs.
4104 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4106 if (!s->scts_parsed) {
4107 if (ct_extract_tls_extension_scts(s) < 0 ||
4108 ct_extract_ocsp_response_scts(s) < 0 ||
4109 ct_extract_x509v3_extension_scts(s) < 0)
4119 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4120 const STACK_OF(SCT) *scts, void *unused_arg)
4125 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4126 const STACK_OF(SCT) *scts, void *unused_arg)
4128 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4131 for (i = 0; i < count; ++i) {
4132 SCT *sct = sk_SCT_value(scts, i);
4133 int status = SCT_get_validation_status(sct);
4135 if (status == SCT_VALIDATION_STATUS_VALID)
4138 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4142 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4146 * Since code exists that uses the custom extension handler for CT, look
4147 * for this and throw an error if they have already registered to use CT.
4149 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4150 TLSEXT_TYPE_signed_certificate_timestamp))
4152 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4153 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4157 if (callback != NULL) {
4159 * If we are validating CT, then we MUST accept SCTs served via OCSP
4161 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4165 s->ct_validation_callback = callback;
4166 s->ct_validation_callback_arg = arg;
4171 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4172 ssl_ct_validation_cb callback, void *arg)
4175 * Since code exists that uses the custom extension handler for CT, look for
4176 * this and throw an error if they have already registered to use CT.
4178 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4179 TLSEXT_TYPE_signed_certificate_timestamp))
4181 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4182 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4186 ctx->ct_validation_callback = callback;
4187 ctx->ct_validation_callback_arg = arg;
4191 int SSL_ct_is_enabled(const SSL *s)
4193 return s->ct_validation_callback != NULL;
4196 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4198 return ctx->ct_validation_callback != NULL;
4201 int ssl_validate_ct(SSL *s)
4204 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4206 SSL_DANE *dane = &s->dane;
4207 CT_POLICY_EVAL_CTX *ctx = NULL;
4208 const STACK_OF(SCT) *scts;
4211 * If no callback is set, the peer is anonymous, or its chain is invalid,
4212 * skip SCT validation - just return success. Applications that continue
4213 * handshakes without certificates, with unverified chains, or pinned leaf
4214 * certificates are outside the scope of the WebPKI and CT.
4216 * The above exclusions notwithstanding the vast majority of peers will
4217 * have rather ordinary certificate chains validated by typical
4218 * applications that perform certificate verification and therefore will
4219 * process SCTs when enabled.
4221 if (s->ct_validation_callback == NULL || cert == NULL ||
4222 s->verify_result != X509_V_OK ||
4223 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4227 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4228 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4230 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4231 switch (dane->mtlsa->usage) {
4232 case DANETLS_USAGE_DANE_TA:
4233 case DANETLS_USAGE_DANE_EE:
4238 ctx = CT_POLICY_EVAL_CTX_new();
4240 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4244 issuer = sk_X509_value(s->verified_chain, 1);
4245 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4246 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4247 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4249 scts = SSL_get0_peer_scts(s);
4252 * This function returns success (> 0) only when all the SCTs are valid, 0
4253 * when some are invalid, and < 0 on various internal errors (out of
4254 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4255 * reason to abort the handshake, that decision is up to the callback.
4256 * Therefore, we error out only in the unexpected case that the return
4257 * value is negative.
4259 * XXX: One might well argue that the return value of this function is an
4260 * unfortunate design choice. Its job is only to determine the validation
4261 * status of each of the provided SCTs. So long as it correctly separates
4262 * the wheat from the chaff it should return success. Failure in this case
4263 * ought to correspond to an inability to carry out its duties.
4265 if (SCT_LIST_validate(scts, ctx) < 0) {
4266 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4270 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4272 ret = 0; /* This function returns 0 on failure */
4275 CT_POLICY_EVAL_CTX_free(ctx);
4277 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4278 * failure return code here. Also the application may wish the complete
4279 * the handshake, and then disconnect cleanly at a higher layer, after
4280 * checking the verification status of the completed connection.
4282 * We therefore force a certificate verification failure which will be
4283 * visible via SSL_get_verify_result() and cached as part of any resumed
4286 * Note: the permissive callback is for information gathering only, always
4287 * returns success, and does not affect verification status. Only the
4288 * strict callback or a custom application-specified callback can trigger
4289 * connection failure or record a verification error.
4292 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
4296 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4298 switch (validation_mode) {
4300 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4302 case SSL_CT_VALIDATION_PERMISSIVE:
4303 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4304 case SSL_CT_VALIDATION_STRICT:
4305 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4309 int SSL_enable_ct(SSL *s, int validation_mode)
4311 switch (validation_mode) {
4313 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4315 case SSL_CT_VALIDATION_PERMISSIVE:
4316 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4317 case SSL_CT_VALIDATION_STRICT:
4318 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4322 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4324 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4327 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4329 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4332 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
4334 CTLOG_STORE_free(ctx->ctlog_store);
4335 ctx->ctlog_store = logs;
4338 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4340 return ctx->ctlog_store;