2 * ! \file ssl/ssl_lib.c \brief Version independent SSL functions.
4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
7 * This package is an SSL implementation written
8 * by Eric Young (eay@cryptsoft.com).
9 * The implementation was written so as to conform with Netscapes SSL.
11 * This library is free for commercial and non-commercial use as long as
12 * the following conditions are aheared to. The following conditions
13 * apply to all code found in this distribution, be it the RC4, RSA,
14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
15 * included with this distribution is covered by the same copyright terms
16 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
18 * Copyright remains Eric Young's, and as such any Copyright notices in
19 * the code are not to be removed.
20 * If this package is used in a product, Eric Young should be given attribution
21 * as the author of the parts of the library used.
22 * This can be in the form of a textual message at program startup or
23 * in documentation (online or textual) provided with the package.
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
28 * 1. Redistributions of source code must retain the copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. All advertising materials mentioning features or use of this software
34 * must display the following acknowledgement:
35 * "This product includes cryptographic software written by
36 * Eric Young (eay@cryptsoft.com)"
37 * The word 'cryptographic' can be left out if the rouines from the library
38 * being used are not cryptographic related :-).
39 * 4. If you include any Windows specific code (or a derivative thereof) from
40 * the apps directory (application code) you must include an acknowledgement:
41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * The licence and distribution terms for any publically available version or
56 * derivative of this code cannot be changed. i.e. this code cannot simply be
57 * copied and put under another distribution licence
58 * [including the GNU Public Licence.]
60 /* ====================================================================
61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
67 * 1. Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in
72 * the documentation and/or other materials provided with the
75 * 3. All advertising materials mentioning features or use of this
76 * software must display the following acknowledgment:
77 * "This product includes software developed by the OpenSSL Project
78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
81 * endorse or promote products derived from this software without
82 * prior written permission. For written permission, please contact
83 * openssl-core@openssl.org.
85 * 5. Products derived from this software may not be called "OpenSSL"
86 * nor may "OpenSSL" appear in their names without prior written
87 * permission of the OpenSSL Project.
89 * 6. Redistributions of any form whatsoever must retain the following
91 * "This product includes software developed by the OpenSSL Project
92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
105 * OF THE POSSIBILITY OF SUCH DAMAGE.
106 * ====================================================================
108 * This product includes cryptographic software written by Eric Young
109 * (eay@cryptsoft.com). This product includes software written by Tim
110 * Hudson (tjh@cryptsoft.com).
113 /* ====================================================================
114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
115 * ECC cipher suite support in OpenSSL originally developed by
116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
118 /* ====================================================================
119 * Copyright 2005 Nokia. All rights reserved.
121 * The portions of the attached software ("Contribution") is developed by
122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
127 * support (see RFC 4279) to OpenSSL.
129 * No patent licenses or other rights except those expressly stated in
130 * the OpenSSL open source license shall be deemed granted or received
131 * expressly, by implication, estoppel, or otherwise.
133 * No assurances are provided by Nokia that the Contribution does not
134 * infringe the patent or other intellectual property rights of any third
135 * party or that the license provides you with all the necessary rights
136 * to make use of the Contribution.
138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
149 #include "ssl_locl.h"
150 #include <openssl/objects.h>
151 #include <openssl/lhash.h>
152 #include <openssl/x509v3.h>
153 #include <openssl/rand.h>
154 #include <openssl/ocsp.h>
155 #include <openssl/dh.h>
156 #include <openssl/engine.h>
157 #include <openssl/async.h>
158 #include <openssl/ct.h>
160 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
162 SSL3_ENC_METHOD ssl3_undef_enc_method = {
164 * evil casts, but these functions are only called if there's a library
167 (int (*)(SSL *, SSL3_RECORD *, unsigned int, int))ssl_undefined_function,
168 (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function,
169 ssl_undefined_function,
170 (int (*)(SSL *, unsigned char *, unsigned char *, int))
171 ssl_undefined_function,
172 (int (*)(SSL *, int))ssl_undefined_function,
173 (int (*)(SSL *, const char *, int, unsigned char *))
174 ssl_undefined_function,
175 0, /* finish_mac_length */
176 NULL, /* client_finished_label */
177 0, /* client_finished_label_len */
178 NULL, /* server_finished_label */
179 0, /* server_finished_label_len */
180 (int (*)(int))ssl_undefined_function,
181 (int (*)(SSL *, unsigned char *, size_t, const char *,
182 size_t, const unsigned char *, size_t,
183 int use_context))ssl_undefined_function,
186 struct ssl_async_args {
190 enum { READFUNC, WRITEFUNC, OTHERFUNC} type;
192 int (*func_read)(SSL *, void *, int);
193 int (*func_write)(SSL *, const void *, int);
194 int (*func_other)(SSL *);
198 static const struct {
203 { DANETLS_MATCHING_FULL, 0, NID_undef },
204 { DANETLS_MATCHING_2256, 1, NID_sha256 },
205 { DANETLS_MATCHING_2512, 2, NID_sha512 },
208 static int dane_ctx_enable(struct dane_ctx_st *dctx)
210 const EVP_MD **mdevp;
212 uint8_t mdmax = DANETLS_MATCHING_LAST;
213 int n = ((int) mdmax) + 1; /* int to handle PrivMatch(255) */
216 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
217 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
219 if (mdord == NULL || mdevp == NULL) {
221 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
225 /* Install default entries */
226 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
229 if (dane_mds[i].nid == NID_undef ||
230 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
232 mdevp[dane_mds[i].mtype] = md;
233 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
243 static void dane_ctx_final(struct dane_ctx_st *dctx)
245 OPENSSL_free(dctx->mdevp);
248 OPENSSL_free(dctx->mdord);
253 static void tlsa_free(danetls_record *t)
257 OPENSSL_free(t->data);
258 EVP_PKEY_free(t->spki);
262 static void dane_final(struct dane_st *dane)
264 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
267 sk_X509_pop_free(dane->certs, X509_free);
270 X509_free(dane->mcert);
278 * dane_copy - Copy dane configuration, sans verification state.
280 static int ssl_dane_dup(SSL *to, SSL *from)
285 if (!DANETLS_ENABLED(&from->dane))
288 dane_final(&to->dane);
290 num = sk_danetls_record_num(from->dane.trecs);
291 for (i = 0; i < num; ++i) {
292 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
293 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
294 t->data, t->dlen) <= 0)
300 static int dane_mtype_set(
301 struct dane_ctx_st *dctx,
308 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
309 SSLerr(SSL_F_DANE_MTYPE_SET,
310 SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
314 if (mtype > dctx->mdmax) {
315 const EVP_MD **mdevp;
317 int n = ((int) mtype) + 1;
319 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
321 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
326 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
328 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
333 /* Zero-fill any gaps */
334 for (i = dctx->mdmax+1; i < mtype; ++i) {
342 dctx->mdevp[mtype] = md;
343 /* Coerce ordinal of disabled matching types to 0 */
344 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
349 static const EVP_MD *tlsa_md_get(struct dane_st *dane, uint8_t mtype)
351 if (mtype > dane->dctx->mdmax)
353 return dane->dctx->mdevp[mtype];
356 static int dane_tlsa_add(
357 struct dane_st *dane,
365 const EVP_MD *md = NULL;
366 int ilen = (int)dlen;
369 if (dane->trecs == NULL) {
370 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
374 if (ilen < 0 || dlen != (size_t)ilen) {
375 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
379 if (usage > DANETLS_USAGE_LAST) {
380 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
384 if (selector > DANETLS_SELECTOR_LAST) {
385 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
389 if (mtype != DANETLS_MATCHING_FULL) {
390 md = tlsa_md_get(dane, mtype);
392 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
397 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
398 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
402 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
406 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
407 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
412 t->selector = selector;
414 t->data = OPENSSL_malloc(ilen);
415 if (t->data == NULL) {
417 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
420 memcpy(t->data, data, ilen);
423 /* Validate and cache full certificate or public key */
424 if (mtype == DANETLS_MATCHING_FULL) {
425 const unsigned char *p = data;
427 EVP_PKEY *pkey = NULL;
430 case DANETLS_SELECTOR_CERT:
431 if (!d2i_X509(&cert, &p, dlen) || p < data ||
432 dlen != (size_t)(p - data)) {
434 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
437 if (X509_get0_pubkey(cert) == NULL) {
439 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
443 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
449 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
450 * records that contain full certificates of trust-anchors that are
451 * not present in the wire chain. For usage PKIX-TA(0), we augment
452 * the chain with untrusted Full(0) certificates from DNS, in case
453 * they are missing from the chain.
455 if ((dane->certs == NULL &&
456 (dane->certs = sk_X509_new_null()) == NULL) ||
457 !sk_X509_push(dane->certs, cert)) {
458 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
465 case DANETLS_SELECTOR_SPKI:
466 if (!d2i_PUBKEY(&pkey, &p, dlen) || p < data ||
467 dlen != (size_t)(p - data)) {
469 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
474 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
475 * records that contain full bare keys of trust-anchors that are
476 * not present in the wire chain.
478 if (usage == DANETLS_USAGE_DANE_TA)
487 * Find the right insertion point for the new record.
489 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
490 * they can be processed first, as they require no chain building, and no
491 * expiration or hostname checks. Because DANE-EE(3) is numerically
492 * largest, this is accomplished via descending sort by "usage".
494 * We also sort in descending order by matching ordinal to simplify
495 * the implementation of digest agility in the verification code.
497 * The choice of order for the selector is not significant, so we
498 * use the same descending order for consistency.
500 for (i = 0; i < sk_danetls_record_num(dane->trecs); ++i) {
501 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
502 if (rec->usage > usage)
504 if (rec->usage < usage)
506 if (rec->selector > selector)
508 if (rec->selector < selector)
510 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
515 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
517 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
520 dane->umask |= DANETLS_USAGE_BIT(usage);
525 static void clear_ciphers(SSL *s)
527 /* clear the current cipher */
528 ssl_clear_cipher_ctx(s);
529 ssl_clear_hash_ctx(&s->read_hash);
530 ssl_clear_hash_ctx(&s->write_hash);
533 int SSL_clear(SSL *s)
535 if (s->method == NULL) {
536 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
540 if (ssl_clear_bad_session(s)) {
541 SSL_SESSION_free(s->session);
549 if (s->renegotiate) {
550 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
554 ossl_statem_clear(s);
556 s->version = s->method->version;
557 s->client_version = s->version;
558 s->rwstate = SSL_NOTHING;
560 BUF_MEM_free(s->init_buf);
565 /* Reset DANE verification result state */
568 X509_free(s->dane.mcert);
569 s->dane.mcert = NULL;
570 s->dane.mtlsa = NULL;
572 /* Clear the verification result peername */
573 X509_VERIFY_PARAM_move_peername(s->param, NULL);
576 * Check to see if we were changed into a different method, if so, revert
577 * back if we are not doing session-id reuse.
579 if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
580 && (s->method != s->ctx->method)) {
581 s->method->ssl_free(s);
582 s->method = s->ctx->method;
583 if (!s->method->ssl_new(s))
586 s->method->ssl_clear(s);
588 RECORD_LAYER_clear(&s->rlayer);
593 /** Used to change an SSL_CTXs default SSL method type */
594 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
596 STACK_OF(SSL_CIPHER) *sk;
600 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
601 &(ctx->cipher_list_by_id),
602 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
603 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
604 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
605 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
611 SSL *SSL_new(SSL_CTX *ctx)
616 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
619 if (ctx->method == NULL) {
620 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
624 s = OPENSSL_zalloc(sizeof(*s));
628 s->lock = CRYPTO_THREAD_lock_new();
629 if (s->lock == NULL) {
630 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
635 RECORD_LAYER_init(&s->rlayer, s);
637 s->options = ctx->options;
638 s->min_proto_version = ctx->min_proto_version;
639 s->max_proto_version = ctx->max_proto_version;
641 s->max_cert_list = ctx->max_cert_list;
645 * Earlier library versions used to copy the pointer to the CERT, not
646 * its contents; only when setting new parameters for the per-SSL
647 * copy, ssl_cert_new would be called (and the direct reference to
648 * the per-SSL_CTX settings would be lost, but those still were
649 * indirectly accessed for various purposes, and for that reason they
650 * used to be known as s->ctx->default_cert). Now we don't look at the
651 * SSL_CTX's CERT after having duplicated it once.
653 s->cert = ssl_cert_dup(ctx->cert);
657 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
658 s->msg_callback = ctx->msg_callback;
659 s->msg_callback_arg = ctx->msg_callback_arg;
660 s->verify_mode = ctx->verify_mode;
661 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
662 s->sid_ctx_length = ctx->sid_ctx_length;
663 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
664 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
665 s->verify_callback = ctx->default_verify_callback;
666 s->generate_session_id = ctx->generate_session_id;
668 s->param = X509_VERIFY_PARAM_new();
669 if (s->param == NULL)
671 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
672 s->quiet_shutdown = ctx->quiet_shutdown;
673 s->max_send_fragment = ctx->max_send_fragment;
674 s->split_send_fragment = ctx->split_send_fragment;
675 s->max_pipelines = ctx->max_pipelines;
676 if (s->max_pipelines > 1)
677 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
678 if (ctx->default_read_buf_len > 0)
679 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
683 s->tlsext_debug_cb = 0;
684 s->tlsext_debug_arg = NULL;
685 s->tlsext_ticket_expected = 0;
686 s->tlsext_status_type = -1;
687 s->tlsext_status_expected = 0;
688 s->tlsext_ocsp_ids = NULL;
689 s->tlsext_ocsp_exts = NULL;
690 s->tlsext_ocsp_resp = NULL;
691 s->tlsext_ocsp_resplen = -1;
693 s->initial_ctx = ctx;
694 # ifndef OPENSSL_NO_EC
695 if (ctx->tlsext_ecpointformatlist) {
696 s->tlsext_ecpointformatlist =
697 OPENSSL_memdup(ctx->tlsext_ecpointformatlist,
698 ctx->tlsext_ecpointformatlist_length);
699 if (!s->tlsext_ecpointformatlist)
701 s->tlsext_ecpointformatlist_length =
702 ctx->tlsext_ecpointformatlist_length;
704 if (ctx->tlsext_ellipticcurvelist) {
705 s->tlsext_ellipticcurvelist =
706 OPENSSL_memdup(ctx->tlsext_ellipticcurvelist,
707 ctx->tlsext_ellipticcurvelist_length);
708 if (!s->tlsext_ellipticcurvelist)
710 s->tlsext_ellipticcurvelist_length =
711 ctx->tlsext_ellipticcurvelist_length;
714 # ifndef OPENSSL_NO_NEXTPROTONEG
715 s->next_proto_negotiated = NULL;
718 if (s->ctx->alpn_client_proto_list) {
719 s->alpn_client_proto_list =
720 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
721 if (s->alpn_client_proto_list == NULL)
723 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
724 s->ctx->alpn_client_proto_list_len);
725 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
728 s->verified_chain = NULL;
729 s->verify_result = X509_V_OK;
731 s->default_passwd_callback = ctx->default_passwd_callback;
732 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
734 s->method = ctx->method;
736 if (!s->method->ssl_new(s))
739 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
744 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
746 #ifndef OPENSSL_NO_PSK
747 s->psk_client_callback = ctx->psk_client_callback;
748 s->psk_server_callback = ctx->psk_server_callback;
753 #ifndef OPENSSL_NO_CT
754 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
755 ctx->ct_validation_callback_arg))
762 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
766 void SSL_up_ref(SSL *s)
769 CRYPTO_atomic_add(&s->references, 1, &i, s->lock);
772 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
773 unsigned int sid_ctx_len)
775 if (sid_ctx_len > sizeof ctx->sid_ctx) {
776 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
777 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
780 ctx->sid_ctx_length = sid_ctx_len;
781 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
786 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
787 unsigned int sid_ctx_len)
789 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
790 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
791 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
794 ssl->sid_ctx_length = sid_ctx_len;
795 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
800 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
802 CRYPTO_THREAD_write_lock(ctx->lock);
803 ctx->generate_session_id = cb;
804 CRYPTO_THREAD_unlock(ctx->lock);
808 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
810 CRYPTO_THREAD_write_lock(ssl->lock);
811 ssl->generate_session_id = cb;
812 CRYPTO_THREAD_unlock(ssl->lock);
816 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
820 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
821 * we can "construct" a session to give us the desired check - ie. to
822 * find if there's a session in the hash table that would conflict with
823 * any new session built out of this id/id_len and the ssl_version in use
828 if (id_len > sizeof r.session_id)
831 r.ssl_version = ssl->version;
832 r.session_id_length = id_len;
833 memcpy(r.session_id, id, id_len);
835 CRYPTO_THREAD_read_lock(ssl->ctx->lock);
836 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
837 CRYPTO_THREAD_unlock(ssl->ctx->lock);
841 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
843 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
846 int SSL_set_purpose(SSL *s, int purpose)
848 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
851 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
853 return X509_VERIFY_PARAM_set_trust(s->param, trust);
856 int SSL_set_trust(SSL *s, int trust)
858 return X509_VERIFY_PARAM_set_trust(s->param, trust);
861 int SSL_set1_host(SSL *s, const char *hostname)
863 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
866 int SSL_add1_host(SSL *s, const char *hostname)
868 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
871 void SSL_set_hostflags(SSL *s, unsigned int flags)
873 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
876 const char *SSL_get0_peername(SSL *s)
878 return X509_VERIFY_PARAM_get0_peername(s->param);
881 int SSL_CTX_dane_enable(SSL_CTX *ctx)
883 return dane_ctx_enable(&ctx->dane);
886 int SSL_dane_enable(SSL *s, const char *basedomain)
888 struct dane_st *dane = &s->dane;
890 if (s->ctx->dane.mdmax == 0) {
891 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
894 if (dane->trecs != NULL) {
895 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
900 * Default SNI name. This rejects empty names, while set1_host below
901 * accepts them and disables host name checks. To avoid side-effects with
902 * invalid input, set the SNI name first.
904 if (s->tlsext_hostname == NULL) {
905 if (!SSL_set_tlsext_host_name(s, basedomain)) {
906 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
911 /* Primary RFC6125 reference identifier */
912 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
913 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
919 dane->dctx = &s->ctx->dane;
920 dane->trecs = sk_danetls_record_new_null();
922 if (dane->trecs == NULL) {
923 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
929 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
931 struct dane_st *dane = &s->dane;
933 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
937 *mcert = dane->mcert;
939 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
944 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
945 uint8_t *mtype, unsigned const char **data, size_t *dlen)
947 struct dane_st *dane = &s->dane;
949 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
953 *usage = dane->mtlsa->usage;
955 *selector = dane->mtlsa->selector;
957 *mtype = dane->mtlsa->mtype;
959 *data = dane->mtlsa->data;
961 *dlen = dane->mtlsa->dlen;
966 struct dane_st *SSL_get0_dane(SSL *s)
971 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
972 uint8_t mtype, unsigned char *data, size_t dlen)
974 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
977 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype, uint8_t ord)
979 return dane_mtype_set(&ctx->dane, md, mtype, ord);
982 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
984 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
987 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
989 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
992 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
997 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1002 void SSL_certs_clear(SSL *s)
1004 ssl_cert_clear_certs(s->cert);
1007 void SSL_free(SSL *s)
1014 CRYPTO_atomic_add(&s->references, -1, &i, s->lock);
1015 REF_PRINT_COUNT("SSL", s);
1018 REF_ASSERT_ISNT(i < 0);
1020 X509_VERIFY_PARAM_free(s->param);
1021 dane_final(&s->dane);
1022 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1024 if (s->bbio != NULL) {
1025 /* If the buffering BIO is in place, pop it off */
1026 if (s->bbio == s->wbio) {
1027 s->wbio = BIO_pop(s->wbio);
1032 BIO_free_all(s->rbio);
1033 if (s->wbio != s->rbio)
1034 BIO_free_all(s->wbio);
1036 BUF_MEM_free(s->init_buf);
1038 /* add extra stuff */
1039 sk_SSL_CIPHER_free(s->cipher_list);
1040 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1042 /* Make the next call work :-) */
1043 if (s->session != NULL) {
1044 ssl_clear_bad_session(s);
1045 SSL_SESSION_free(s->session);
1050 ssl_cert_free(s->cert);
1051 /* Free up if allocated */
1053 OPENSSL_free(s->tlsext_hostname);
1054 SSL_CTX_free(s->initial_ctx);
1055 #ifndef OPENSSL_NO_EC
1056 OPENSSL_free(s->tlsext_ecpointformatlist);
1057 OPENSSL_free(s->tlsext_ellipticcurvelist);
1058 #endif /* OPENSSL_NO_EC */
1059 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
1060 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
1061 #ifndef OPENSSL_NO_CT
1062 SCT_LIST_free(s->scts);
1063 OPENSSL_free(s->tlsext_scts);
1065 OPENSSL_free(s->tlsext_ocsp_resp);
1066 OPENSSL_free(s->alpn_client_proto_list);
1068 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
1070 sk_X509_pop_free(s->verified_chain, X509_free);
1072 if (s->method != NULL)
1073 s->method->ssl_free(s);
1075 RECORD_LAYER_release(&s->rlayer);
1077 SSL_CTX_free(s->ctx);
1079 ASYNC_WAIT_CTX_free(s->waitctx);
1081 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1082 OPENSSL_free(s->next_proto_negotiated);
1085 #ifndef OPENSSL_NO_SRTP
1086 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1089 CRYPTO_THREAD_lock_free(s->lock);
1094 void SSL_set_rbio(SSL *s, BIO *rbio)
1096 if (s->rbio != rbio)
1097 BIO_free_all(s->rbio);
1101 void SSL_set_wbio(SSL *s, BIO *wbio)
1104 * If the output buffering BIO is still in place, remove it
1106 if (s->bbio != NULL) {
1107 if (s->wbio == s->bbio) {
1108 s->wbio = BIO_next(s->wbio);
1109 BIO_set_next(s->bbio, NULL);
1112 if (s->wbio != wbio && s->rbio != s->wbio)
1113 BIO_free_all(s->wbio);
1117 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1119 SSL_set_wbio(s, wbio);
1120 SSL_set_rbio(s, rbio);
1123 BIO *SSL_get_rbio(const SSL *s)
1128 BIO *SSL_get_wbio(const SSL *s)
1133 int SSL_get_fd(const SSL *s)
1135 return (SSL_get_rfd(s));
1138 int SSL_get_rfd(const SSL *s)
1143 b = SSL_get_rbio(s);
1144 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1146 BIO_get_fd(r, &ret);
1150 int SSL_get_wfd(const SSL *s)
1155 b = SSL_get_wbio(s);
1156 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1158 BIO_get_fd(r, &ret);
1162 #ifndef OPENSSL_NO_SOCK
1163 int SSL_set_fd(SSL *s, int fd)
1168 bio = BIO_new(BIO_s_socket());
1171 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1174 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1175 SSL_set_bio(s, bio, bio);
1181 int SSL_set_wfd(SSL *s, int fd)
1186 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
1187 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
1188 bio = BIO_new(BIO_s_socket());
1191 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1194 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1195 SSL_set_bio(s, SSL_get_rbio(s), bio);
1197 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
1203 int SSL_set_rfd(SSL *s, int fd)
1208 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
1209 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
1210 bio = BIO_new(BIO_s_socket());
1213 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1216 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1217 SSL_set_bio(s, bio, SSL_get_wbio(s));
1219 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
1226 /* return length of latest Finished message we sent, copy to 'buf' */
1227 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1231 if (s->s3 != NULL) {
1232 ret = s->s3->tmp.finish_md_len;
1235 memcpy(buf, s->s3->tmp.finish_md, count);
1240 /* return length of latest Finished message we expected, copy to 'buf' */
1241 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1245 if (s->s3 != NULL) {
1246 ret = s->s3->tmp.peer_finish_md_len;
1249 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1254 int SSL_get_verify_mode(const SSL *s)
1256 return (s->verify_mode);
1259 int SSL_get_verify_depth(const SSL *s)
1261 return X509_VERIFY_PARAM_get_depth(s->param);
1264 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1265 return (s->verify_callback);
1268 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1270 return (ctx->verify_mode);
1273 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1275 return X509_VERIFY_PARAM_get_depth(ctx->param);
1278 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1279 return (ctx->default_verify_callback);
1282 void SSL_set_verify(SSL *s, int mode,
1283 int (*callback) (int ok, X509_STORE_CTX *ctx))
1285 s->verify_mode = mode;
1286 if (callback != NULL)
1287 s->verify_callback = callback;
1290 void SSL_set_verify_depth(SSL *s, int depth)
1292 X509_VERIFY_PARAM_set_depth(s->param, depth);
1295 void SSL_set_read_ahead(SSL *s, int yes)
1297 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1300 int SSL_get_read_ahead(const SSL *s)
1302 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1305 int SSL_pending(const SSL *s)
1308 * SSL_pending cannot work properly if read-ahead is enabled
1309 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1310 * impossible to fix since SSL_pending cannot report errors that may be
1311 * observed while scanning the new data. (Note that SSL_pending() is
1312 * often used as a boolean value, so we'd better not return -1.)
1314 return (s->method->ssl_pending(s));
1317 int SSL_has_pending(const SSL *s)
1320 * Similar to SSL_pending() but returns a 1 to indicate that we have
1321 * unprocessed data available or 0 otherwise (as opposed to the number of
1322 * bytes available). Unlike SSL_pending() this will take into account
1323 * read_ahead data. A 1 return simply indicates that we have unprocessed
1324 * data. That data may not result in any application data, or we may fail
1325 * to parse the records for some reason.
1330 return RECORD_LAYER_read_pending(&s->rlayer);
1333 X509 *SSL_get_peer_certificate(const SSL *s)
1337 if ((s == NULL) || (s->session == NULL))
1340 r = s->session->peer;
1350 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1354 if ((s == NULL) || (s->session == NULL))
1357 r = s->session->peer_chain;
1360 * If we are a client, cert_chain includes the peer's own certificate; if
1361 * we are a server, it does not.
1368 * Now in theory, since the calling process own 't' it should be safe to
1369 * modify. We need to be able to read f without being hassled
1371 int SSL_copy_session_id(SSL *t, const SSL *f)
1374 /* Do we need to to SSL locking? */
1375 if (!SSL_set_session(t, SSL_get_session(f))) {
1380 * what if we are setup for one protocol version but want to talk another
1382 if (t->method != f->method) {
1383 t->method->ssl_free(t);
1384 t->method = f->method;
1385 if (t->method->ssl_new(t) == 0)
1389 CRYPTO_atomic_add(&f->cert->references, 1, &i, f->cert->lock);
1390 ssl_cert_free(t->cert);
1392 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
1399 /* Fix this so it checks all the valid key/cert options */
1400 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1402 if ((ctx == NULL) ||
1403 (ctx->cert->key->x509 == NULL)) {
1404 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1405 SSL_R_NO_CERTIFICATE_ASSIGNED);
1408 if (ctx->cert->key->privatekey == NULL) {
1409 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1410 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1413 return (X509_check_private_key
1414 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1417 /* Fix this function so that it takes an optional type parameter */
1418 int SSL_check_private_key(const SSL *ssl)
1421 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1424 if (ssl->cert->key->x509 == NULL) {
1425 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1428 if (ssl->cert->key->privatekey == NULL) {
1429 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1432 return (X509_check_private_key(ssl->cert->key->x509,
1433 ssl->cert->key->privatekey));
1436 int SSL_waiting_for_async(SSL *s)
1444 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1446 ASYNC_WAIT_CTX *ctx = s->waitctx;
1450 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1453 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1454 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1456 ASYNC_WAIT_CTX *ctx = s->waitctx;
1460 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1464 int SSL_accept(SSL *s)
1466 if (s->handshake_func == NULL) {
1467 /* Not properly initialized yet */
1468 SSL_set_accept_state(s);
1471 return SSL_do_handshake(s);
1474 int SSL_connect(SSL *s)
1476 if (s->handshake_func == NULL) {
1477 /* Not properly initialized yet */
1478 SSL_set_connect_state(s);
1481 return SSL_do_handshake(s);
1484 long SSL_get_default_timeout(const SSL *s)
1486 return (s->method->get_timeout());
1489 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1490 int (*func)(void *)) {
1492 if (s->waitctx == NULL) {
1493 s->waitctx = ASYNC_WAIT_CTX_new();
1494 if (s->waitctx == NULL)
1497 switch(ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1498 sizeof(struct ssl_async_args))) {
1500 s->rwstate = SSL_NOTHING;
1501 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1504 s->rwstate = SSL_ASYNC_PAUSED;
1510 s->rwstate = SSL_NOTHING;
1511 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1512 /* Shouldn't happen */
1517 static int ssl_io_intern(void *vargs)
1519 struct ssl_async_args *args;
1524 args = (struct ssl_async_args *)vargs;
1528 switch (args->type) {
1530 return args->f.func_read(s, buf, num);
1532 return args->f.func_write(s, buf, num);
1534 return args->f.func_other(s);
1539 int SSL_read(SSL *s, void *buf, int num)
1541 if (s->handshake_func == NULL) {
1542 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1546 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1547 s->rwstate = SSL_NOTHING;
1551 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1552 struct ssl_async_args args;
1557 args.type = READFUNC;
1558 args.f.func_read = s->method->ssl_read;
1560 return ssl_start_async_job(s, &args, ssl_io_intern);
1562 return s->method->ssl_read(s, buf, num);
1566 int SSL_peek(SSL *s, void *buf, int num)
1568 if (s->handshake_func == NULL) {
1569 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1573 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1576 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1577 struct ssl_async_args args;
1582 args.type = READFUNC;
1583 args.f.func_read = s->method->ssl_peek;
1585 return ssl_start_async_job(s, &args, ssl_io_intern);
1587 return s->method->ssl_peek(s, buf, num);
1591 int SSL_write(SSL *s, const void *buf, int num)
1593 if (s->handshake_func == NULL) {
1594 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1598 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1599 s->rwstate = SSL_NOTHING;
1600 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1604 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1605 struct ssl_async_args args;
1608 args.buf = (void *)buf;
1610 args.type = WRITEFUNC;
1611 args.f.func_write = s->method->ssl_write;
1613 return ssl_start_async_job(s, &args, ssl_io_intern);
1615 return s->method->ssl_write(s, buf, num);
1619 int SSL_shutdown(SSL *s)
1622 * Note that this function behaves differently from what one might
1623 * expect. Return values are 0 for no success (yet), 1 for success; but
1624 * calling it once is usually not enough, even if blocking I/O is used
1625 * (see ssl3_shutdown).
1628 if (s->handshake_func == NULL) {
1629 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1633 if (!SSL_in_init(s)) {
1634 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1635 struct ssl_async_args args;
1638 args.type = OTHERFUNC;
1639 args.f.func_other = s->method->ssl_shutdown;
1641 return ssl_start_async_job(s, &args, ssl_io_intern);
1643 return s->method->ssl_shutdown(s);
1646 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1651 int SSL_renegotiate(SSL *s)
1653 if (s->renegotiate == 0)
1658 return (s->method->ssl_renegotiate(s));
1661 int SSL_renegotiate_abbreviated(SSL *s)
1663 if (s->renegotiate == 0)
1668 return (s->method->ssl_renegotiate(s));
1671 int SSL_renegotiate_pending(SSL *s)
1674 * becomes true when negotiation is requested; false again once a
1675 * handshake has finished
1677 return (s->renegotiate != 0);
1680 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1685 case SSL_CTRL_GET_READ_AHEAD:
1686 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1687 case SSL_CTRL_SET_READ_AHEAD:
1688 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1689 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1692 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1693 s->msg_callback_arg = parg;
1697 return (s->mode |= larg);
1698 case SSL_CTRL_CLEAR_MODE:
1699 return (s->mode &= ~larg);
1700 case SSL_CTRL_GET_MAX_CERT_LIST:
1701 return (s->max_cert_list);
1702 case SSL_CTRL_SET_MAX_CERT_LIST:
1703 l = s->max_cert_list;
1704 s->max_cert_list = larg;
1706 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1707 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1709 s->max_send_fragment = larg;
1710 if (s->max_send_fragment < s->split_send_fragment)
1711 s->split_send_fragment = s->max_send_fragment;
1713 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1714 if ((unsigned int)larg > s->max_send_fragment || larg == 0)
1716 s->split_send_fragment = larg;
1718 case SSL_CTRL_SET_MAX_PIPELINES:
1719 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1721 s->max_pipelines = larg;
1723 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
1725 case SSL_CTRL_GET_RI_SUPPORT:
1727 return s->s3->send_connection_binding;
1730 case SSL_CTRL_CERT_FLAGS:
1731 return (s->cert->cert_flags |= larg);
1732 case SSL_CTRL_CLEAR_CERT_FLAGS:
1733 return (s->cert->cert_flags &= ~larg);
1735 case SSL_CTRL_GET_RAW_CIPHERLIST:
1737 if (s->s3->tmp.ciphers_raw == NULL)
1739 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1740 return (int)s->s3->tmp.ciphers_rawlen;
1742 return TLS_CIPHER_LEN;
1744 case SSL_CTRL_GET_EXTMS_SUPPORT:
1745 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1747 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1751 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1752 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1753 &s->min_proto_version);
1754 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1755 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1756 &s->max_proto_version);
1758 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1762 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1765 case SSL_CTRL_SET_MSG_CALLBACK:
1766 s->msg_callback = (void (*)
1767 (int write_p, int version, int content_type,
1768 const void *buf, size_t len, SSL *ssl,
1773 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1777 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1779 return ctx->sessions;
1782 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1785 /* For some cases with ctx == NULL perform syntax checks */
1788 #ifndef OPENSSL_NO_EC
1789 case SSL_CTRL_SET_CURVES_LIST:
1790 return tls1_set_curves_list(NULL, NULL, parg);
1792 case SSL_CTRL_SET_SIGALGS_LIST:
1793 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1794 return tls1_set_sigalgs_list(NULL, parg, 0);
1801 case SSL_CTRL_GET_READ_AHEAD:
1802 return (ctx->read_ahead);
1803 case SSL_CTRL_SET_READ_AHEAD:
1804 l = ctx->read_ahead;
1805 ctx->read_ahead = larg;
1808 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1809 ctx->msg_callback_arg = parg;
1812 case SSL_CTRL_GET_MAX_CERT_LIST:
1813 return (ctx->max_cert_list);
1814 case SSL_CTRL_SET_MAX_CERT_LIST:
1815 l = ctx->max_cert_list;
1816 ctx->max_cert_list = larg;
1819 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1820 l = ctx->session_cache_size;
1821 ctx->session_cache_size = larg;
1823 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1824 return (ctx->session_cache_size);
1825 case SSL_CTRL_SET_SESS_CACHE_MODE:
1826 l = ctx->session_cache_mode;
1827 ctx->session_cache_mode = larg;
1829 case SSL_CTRL_GET_SESS_CACHE_MODE:
1830 return (ctx->session_cache_mode);
1832 case SSL_CTRL_SESS_NUMBER:
1833 return (lh_SSL_SESSION_num_items(ctx->sessions));
1834 case SSL_CTRL_SESS_CONNECT:
1835 return (ctx->stats.sess_connect);
1836 case SSL_CTRL_SESS_CONNECT_GOOD:
1837 return (ctx->stats.sess_connect_good);
1838 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1839 return (ctx->stats.sess_connect_renegotiate);
1840 case SSL_CTRL_SESS_ACCEPT:
1841 return (ctx->stats.sess_accept);
1842 case SSL_CTRL_SESS_ACCEPT_GOOD:
1843 return (ctx->stats.sess_accept_good);
1844 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1845 return (ctx->stats.sess_accept_renegotiate);
1846 case SSL_CTRL_SESS_HIT:
1847 return (ctx->stats.sess_hit);
1848 case SSL_CTRL_SESS_CB_HIT:
1849 return (ctx->stats.sess_cb_hit);
1850 case SSL_CTRL_SESS_MISSES:
1851 return (ctx->stats.sess_miss);
1852 case SSL_CTRL_SESS_TIMEOUTS:
1853 return (ctx->stats.sess_timeout);
1854 case SSL_CTRL_SESS_CACHE_FULL:
1855 return (ctx->stats.sess_cache_full);
1857 return (ctx->mode |= larg);
1858 case SSL_CTRL_CLEAR_MODE:
1859 return (ctx->mode &= ~larg);
1860 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1861 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1863 ctx->max_send_fragment = larg;
1864 if (ctx->max_send_fragment < ctx->split_send_fragment)
1865 ctx->split_send_fragment = ctx->split_send_fragment;
1867 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1868 if ((unsigned int)larg > ctx->max_send_fragment || larg == 0)
1870 ctx->split_send_fragment = larg;
1872 case SSL_CTRL_SET_MAX_PIPELINES:
1873 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1875 ctx->max_pipelines = larg;
1877 case SSL_CTRL_CERT_FLAGS:
1878 return (ctx->cert->cert_flags |= larg);
1879 case SSL_CTRL_CLEAR_CERT_FLAGS:
1880 return (ctx->cert->cert_flags &= ~larg);
1881 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1882 return ssl_set_version_bound(ctx->method->version, (int)larg,
1883 &ctx->min_proto_version);
1884 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1885 return ssl_set_version_bound(ctx->method->version, (int)larg,
1886 &ctx->max_proto_version);
1888 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1892 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1895 case SSL_CTRL_SET_MSG_CALLBACK:
1896 ctx->msg_callback = (void (*)
1897 (int write_p, int version, int content_type,
1898 const void *buf, size_t len, SSL *ssl,
1903 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1907 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1916 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1917 const SSL_CIPHER *const *bp)
1919 if ((*ap)->id > (*bp)->id)
1921 if ((*ap)->id < (*bp)->id)
1926 /** return a STACK of the ciphers available for the SSL and in order of
1928 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1931 if (s->cipher_list != NULL) {
1932 return (s->cipher_list);
1933 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1934 return (s->ctx->cipher_list);
1940 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
1942 if ((s == NULL) || (s->session == NULL) || !s->server)
1944 return s->session->ciphers;
1947 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1949 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1951 ciphers = SSL_get_ciphers(s);
1954 ssl_set_client_disabled(s);
1955 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1956 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1957 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1959 sk = sk_SSL_CIPHER_new_null();
1962 if (!sk_SSL_CIPHER_push(sk, c)) {
1963 sk_SSL_CIPHER_free(sk);
1971 /** return a STACK of the ciphers available for the SSL and in order of
1973 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1976 if (s->cipher_list_by_id != NULL) {
1977 return (s->cipher_list_by_id);
1978 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1979 return (s->ctx->cipher_list_by_id);
1985 /** The old interface to get the same thing as SSL_get_ciphers() */
1986 const char *SSL_get_cipher_list(const SSL *s, int n)
1988 const SSL_CIPHER *c;
1989 STACK_OF(SSL_CIPHER) *sk;
1993 sk = SSL_get_ciphers(s);
1994 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1996 c = sk_SSL_CIPHER_value(sk, n);
2002 /** specify the ciphers to be used by default by the SSL_CTX */
2003 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2005 STACK_OF(SSL_CIPHER) *sk;
2007 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2008 &ctx->cipher_list_by_id, str, ctx->cert);
2010 * ssl_create_cipher_list may return an empty stack if it was unable to
2011 * find a cipher matching the given rule string (for example if the rule
2012 * string specifies a cipher which has been disabled). This is not an
2013 * error as far as ssl_create_cipher_list is concerned, and hence
2014 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2018 else if (sk_SSL_CIPHER_num(sk) == 0) {
2019 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2025 /** specify the ciphers to be used by the SSL */
2026 int SSL_set_cipher_list(SSL *s, const char *str)
2028 STACK_OF(SSL_CIPHER) *sk;
2030 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2031 &s->cipher_list_by_id, str, s->cert);
2032 /* see comment in SSL_CTX_set_cipher_list */
2035 else if (sk_SSL_CIPHER_num(sk) == 0) {
2036 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2042 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2045 STACK_OF(SSL_CIPHER) *sk;
2046 const SSL_CIPHER *c;
2049 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2053 sk = s->session->ciphers;
2055 if (sk_SSL_CIPHER_num(sk) == 0)
2058 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2061 c = sk_SSL_CIPHER_value(sk, i);
2062 n = strlen(c->name);
2069 memcpy(p, c->name, n + 1);
2078 /** return a servername extension value if provided in Client Hello, or NULL.
2079 * So far, only host_name types are defined (RFC 3546).
2082 const char *SSL_get_servername(const SSL *s, const int type)
2084 if (type != TLSEXT_NAMETYPE_host_name)
2087 return s->session && !s->tlsext_hostname ?
2088 s->session->tlsext_hostname : s->tlsext_hostname;
2091 int SSL_get_servername_type(const SSL *s)
2094 && (!s->tlsext_hostname ? s->session->
2095 tlsext_hostname : s->tlsext_hostname))
2096 return TLSEXT_NAMETYPE_host_name;
2101 * SSL_select_next_proto implements the standard protocol selection. It is
2102 * expected that this function is called from the callback set by
2103 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2104 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2105 * not included in the length. A byte string of length 0 is invalid. No byte
2106 * string may be truncated. The current, but experimental algorithm for
2107 * selecting the protocol is: 1) If the server doesn't support NPN then this
2108 * is indicated to the callback. In this case, the client application has to
2109 * abort the connection or have a default application level protocol. 2) If
2110 * the server supports NPN, but advertises an empty list then the client
2111 * selects the first protcol in its list, but indicates via the API that this
2112 * fallback case was enacted. 3) Otherwise, the client finds the first
2113 * protocol in the server's list that it supports and selects this protocol.
2114 * This is because it's assumed that the server has better information about
2115 * which protocol a client should use. 4) If the client doesn't support any
2116 * of the server's advertised protocols, then this is treated the same as
2117 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2118 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2120 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2121 const unsigned char *server,
2122 unsigned int server_len,
2123 const unsigned char *client,
2124 unsigned int client_len)
2127 const unsigned char *result;
2128 int status = OPENSSL_NPN_UNSUPPORTED;
2131 * For each protocol in server preference order, see if we support it.
2133 for (i = 0; i < server_len;) {
2134 for (j = 0; j < client_len;) {
2135 if (server[i] == client[j] &&
2136 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2137 /* We found a match */
2138 result = &server[i];
2139 status = OPENSSL_NPN_NEGOTIATED;
2149 /* There's no overlap between our protocols and the server's list. */
2151 status = OPENSSL_NPN_NO_OVERLAP;
2154 *out = (unsigned char *)result + 1;
2155 *outlen = result[0];
2159 #ifndef OPENSSL_NO_NEXTPROTONEG
2161 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2162 * client's requested protocol for this connection and returns 0. If the
2163 * client didn't request any protocol, then *data is set to NULL. Note that
2164 * the client can request any protocol it chooses. The value returned from
2165 * this function need not be a member of the list of supported protocols
2166 * provided by the callback.
2168 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2171 *data = s->next_proto_negotiated;
2175 *len = s->next_proto_negotiated_len;
2180 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
2181 * a TLS server needs a list of supported protocols for Next Protocol
2182 * Negotiation. The returned list must be in wire format. The list is
2183 * returned by setting |out| to point to it and |outlen| to its length. This
2184 * memory will not be modified, but one should assume that the SSL* keeps a
2185 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2186 * wishes to advertise. Otherwise, no such extension will be included in the
2189 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
2190 int (*cb) (SSL *ssl,
2193 unsigned int *outlen,
2194 void *arg), void *arg)
2196 ctx->next_protos_advertised_cb = cb;
2197 ctx->next_protos_advertised_cb_arg = arg;
2201 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2202 * client needs to select a protocol from the server's provided list. |out|
2203 * must be set to point to the selected protocol (which may be within |in|).
2204 * The length of the protocol name must be written into |outlen|. The
2205 * server's advertised protocols are provided in |in| and |inlen|. The
2206 * callback can assume that |in| is syntactically valid. The client must
2207 * select a protocol. It is fatal to the connection if this callback returns
2208 * a value other than SSL_TLSEXT_ERR_OK.
2210 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
2211 int (*cb) (SSL *s, unsigned char **out,
2212 unsigned char *outlen,
2213 const unsigned char *in,
2215 void *arg), void *arg)
2217 ctx->next_proto_select_cb = cb;
2218 ctx->next_proto_select_cb_arg = arg;
2223 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2224 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2225 * length-prefixed strings). Returns 0 on success.
2227 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2228 unsigned int protos_len)
2230 OPENSSL_free(ctx->alpn_client_proto_list);
2231 ctx->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2232 if (ctx->alpn_client_proto_list == NULL) {
2233 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2236 ctx->alpn_client_proto_list_len = protos_len;
2242 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2243 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2244 * length-prefixed strings). Returns 0 on success.
2246 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2247 unsigned int protos_len)
2249 OPENSSL_free(ssl->alpn_client_proto_list);
2250 ssl->alpn_client_proto_list = OPENSSL_memdup(protos, protos_len);
2251 if (ssl->alpn_client_proto_list == NULL) {
2252 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2255 ssl->alpn_client_proto_list_len = protos_len;
2261 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2262 * called during ClientHello processing in order to select an ALPN protocol
2263 * from the client's list of offered protocols.
2265 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2266 int (*cb) (SSL *ssl,
2267 const unsigned char **out,
2268 unsigned char *outlen,
2269 const unsigned char *in,
2271 void *arg), void *arg)
2273 ctx->alpn_select_cb = cb;
2274 ctx->alpn_select_cb_arg = arg;
2278 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2279 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2280 * (not including the leading length-prefix byte). If the server didn't
2281 * respond with a negotiated protocol then |*len| will be zero.
2283 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2288 *data = ssl->s3->alpn_selected;
2292 *len = ssl->s3->alpn_selected_len;
2296 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2297 const char *label, size_t llen,
2298 const unsigned char *p, size_t plen,
2301 if (s->version < TLS1_VERSION)
2304 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2309 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2314 ((unsigned int)a->session_id[0]) |
2315 ((unsigned int)a->session_id[1] << 8L) |
2316 ((unsigned long)a->session_id[2] << 16L) |
2317 ((unsigned long)a->session_id[3] << 24L);
2322 * NB: If this function (or indeed the hash function which uses a sort of
2323 * coarser function than this one) is changed, ensure
2324 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2325 * being able to construct an SSL_SESSION that will collide with any existing
2326 * session with a matching session ID.
2328 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2330 if (a->ssl_version != b->ssl_version)
2332 if (a->session_id_length != b->session_id_length)
2334 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2338 * These wrapper functions should remain rather than redeclaring
2339 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2340 * variable. The reason is that the functions aren't static, they're exposed
2344 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2346 SSL_CTX *ret = NULL;
2349 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2353 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2356 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
2357 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE);
2361 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2362 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2365 ret = OPENSSL_zalloc(sizeof(*ret));
2370 ret->min_proto_version = 0;
2371 ret->max_proto_version = 0;
2372 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2373 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2374 /* We take the system default. */
2375 ret->session_timeout = meth->get_timeout();
2376 ret->references = 1;
2377 ret->lock = CRYPTO_THREAD_lock_new();
2378 if (ret->lock == NULL) {
2379 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2383 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2384 ret->verify_mode = SSL_VERIFY_NONE;
2385 if ((ret->cert = ssl_cert_new()) == NULL)
2388 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2389 if (ret->sessions == NULL)
2391 ret->cert_store = X509_STORE_new();
2392 if (ret->cert_store == NULL)
2394 #ifndef OPENSSL_NO_CT
2395 ret->ctlog_store = CTLOG_STORE_new();
2396 if (ret->ctlog_store == NULL)
2399 if (!ssl_create_cipher_list(ret->method,
2400 &ret->cipher_list, &ret->cipher_list_by_id,
2401 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2402 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2403 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2407 ret->param = X509_VERIFY_PARAM_new();
2408 if (ret->param == NULL)
2411 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2412 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2415 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2416 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2420 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
2423 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
2425 /* No compression for DTLS */
2426 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2427 ret->comp_methods = SSL_COMP_get_compression_methods();
2429 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2430 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2432 /* Setup RFC4507 ticket keys */
2433 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
2434 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
2435 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
2436 ret->options |= SSL_OP_NO_TICKET;
2438 #ifndef OPENSSL_NO_SRP
2439 if (!SSL_CTX_SRP_CTX_init(ret))
2442 #ifndef OPENSSL_NO_ENGINE
2443 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2444 # define eng_strx(x) #x
2445 # define eng_str(x) eng_strx(x)
2446 /* Use specific client engine automatically... ignore errors */
2449 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2452 ENGINE_load_builtin_engines();
2453 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2455 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2461 * Default is to connect to non-RI servers. When RI is more widely
2462 * deployed might change this.
2464 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2466 * Disable compression by default to prevent CRIME. Applications can
2467 * re-enable compression by configuring
2468 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2469 * or by using the SSL_CONF library.
2471 ret->options |= SSL_OP_NO_COMPRESSION;
2475 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2481 void SSL_CTX_up_ref(SSL_CTX *ctx)
2484 CRYPTO_atomic_add(&ctx->references, 1, &i, ctx->lock);
2487 void SSL_CTX_free(SSL_CTX *a)
2494 CRYPTO_atomic_add(&a->references, -1, &i, a->lock);
2495 REF_PRINT_COUNT("SSL_CTX", a);
2498 REF_ASSERT_ISNT(i < 0);
2500 X509_VERIFY_PARAM_free(a->param);
2501 dane_ctx_final(&a->dane);
2504 * Free internal session cache. However: the remove_cb() may reference
2505 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2506 * after the sessions were flushed.
2507 * As the ex_data handling routines might also touch the session cache,
2508 * the most secure solution seems to be: empty (flush) the cache, then
2509 * free ex_data, then finally free the cache.
2510 * (See ticket [openssl.org #212].)
2512 if (a->sessions != NULL)
2513 SSL_CTX_flush_sessions(a, 0);
2515 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2516 lh_SSL_SESSION_free(a->sessions);
2517 X509_STORE_free(a->cert_store);
2518 #ifndef OPENSSL_NO_CT
2519 CTLOG_STORE_free(a->ctlog_store);
2521 sk_SSL_CIPHER_free(a->cipher_list);
2522 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2523 ssl_cert_free(a->cert);
2524 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2525 sk_X509_pop_free(a->extra_certs, X509_free);
2526 a->comp_methods = NULL;
2527 #ifndef OPENSSL_NO_SRTP
2528 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2530 #ifndef OPENSSL_NO_SRP
2531 SSL_CTX_SRP_CTX_free(a);
2533 #ifndef OPENSSL_NO_ENGINE
2534 ENGINE_finish(a->client_cert_engine);
2537 #ifndef OPENSSL_NO_EC
2538 OPENSSL_free(a->tlsext_ecpointformatlist);
2539 OPENSSL_free(a->tlsext_ellipticcurvelist);
2541 OPENSSL_free(a->alpn_client_proto_list);
2543 CRYPTO_THREAD_lock_free(a->lock);
2548 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2550 ctx->default_passwd_callback = cb;
2553 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2555 ctx->default_passwd_callback_userdata = u;
2558 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2560 return ctx->default_passwd_callback;
2563 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2565 return ctx->default_passwd_callback_userdata;
2568 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2570 s->default_passwd_callback = cb;
2573 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2575 s->default_passwd_callback_userdata = u;
2578 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2580 return s->default_passwd_callback;
2583 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2585 return s->default_passwd_callback_userdata;
2588 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2589 int (*cb) (X509_STORE_CTX *, void *),
2592 ctx->app_verify_callback = cb;
2593 ctx->app_verify_arg = arg;
2596 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2597 int (*cb) (int, X509_STORE_CTX *))
2599 ctx->verify_mode = mode;
2600 ctx->default_verify_callback = cb;
2603 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2605 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2608 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2611 ssl_cert_set_cert_cb(c->cert, cb, arg);
2614 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2616 ssl_cert_set_cert_cb(s->cert, cb, arg);
2619 void ssl_set_masks(SSL *s)
2621 #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST)
2625 uint32_t *pvalid = s->s3->tmp.valid_flags;
2626 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
2627 unsigned long mask_k, mask_a;
2628 #ifndef OPENSSL_NO_EC
2629 int have_ecc_cert, ecdsa_ok;
2635 #ifndef OPENSSL_NO_DH
2636 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2641 rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
2642 rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
2643 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
2644 #ifndef OPENSSL_NO_EC
2645 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2651 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
2652 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
2655 #ifndef OPENSSL_NO_GOST
2656 cpk = &(c->pkeys[SSL_PKEY_GOST12_512]);
2657 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2658 mask_k |= SSL_kGOST;
2659 mask_a |= SSL_aGOST12;
2661 cpk = &(c->pkeys[SSL_PKEY_GOST12_256]);
2662 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2663 mask_k |= SSL_kGOST;
2664 mask_a |= SSL_aGOST12;
2666 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2667 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2668 mask_k |= SSL_kGOST;
2669 mask_a |= SSL_aGOST01;
2679 if (rsa_enc || rsa_sign) {
2687 mask_a |= SSL_aNULL;
2690 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2691 * depending on the key usage extension.
2693 #ifndef OPENSSL_NO_EC
2694 if (have_ecc_cert) {
2696 cpk = &c->pkeys[SSL_PKEY_ECC];
2698 ex_kusage = X509_get_key_usage(x);
2699 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2700 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2703 mask_a |= SSL_aECDSA;
2707 #ifndef OPENSSL_NO_EC
2708 mask_k |= SSL_kECDHE;
2711 #ifndef OPENSSL_NO_PSK
2714 if (mask_k & SSL_kRSA)
2715 mask_k |= SSL_kRSAPSK;
2716 if (mask_k & SSL_kDHE)
2717 mask_k |= SSL_kDHEPSK;
2718 if (mask_k & SSL_kECDHE)
2719 mask_k |= SSL_kECDHEPSK;
2722 s->s3->tmp.mask_k = mask_k;
2723 s->s3->tmp.mask_a = mask_a;
2726 #ifndef OPENSSL_NO_EC
2728 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2730 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
2731 /* key usage, if present, must allow signing */
2732 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
2733 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2734 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2738 return 1; /* all checks are ok */
2743 static int ssl_get_server_cert_index(const SSL *s)
2746 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2747 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2748 idx = SSL_PKEY_RSA_SIGN;
2749 if (idx == SSL_PKEY_GOST_EC) {
2750 if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)
2751 idx = SSL_PKEY_GOST12_512;
2752 else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509)
2753 idx = SSL_PKEY_GOST12_256;
2754 else if (s->cert->pkeys[SSL_PKEY_GOST01].x509)
2755 idx = SSL_PKEY_GOST01;
2760 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2764 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2770 if (!s->s3 || !s->s3->tmp.new_cipher)
2774 i = ssl_get_server_cert_index(s);
2776 /* This may or may not be an error. */
2781 return &c->pkeys[i];
2784 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2787 unsigned long alg_a;
2791 alg_a = cipher->algorithm_auth;
2794 if ((alg_a & SSL_aDSS) &&
2795 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2796 idx = SSL_PKEY_DSA_SIGN;
2797 else if (alg_a & SSL_aRSA) {
2798 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2799 idx = SSL_PKEY_RSA_SIGN;
2800 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2801 idx = SSL_PKEY_RSA_ENC;
2802 } else if ((alg_a & SSL_aECDSA) &&
2803 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2806 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2810 *pmd = s->s3->tmp.md[idx];
2811 return c->pkeys[idx].privatekey;
2814 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2815 size_t *serverinfo_length)
2819 *serverinfo_length = 0;
2822 i = ssl_get_server_cert_index(s);
2826 if (c->pkeys[i].serverinfo == NULL)
2829 *serverinfo = c->pkeys[i].serverinfo;
2830 *serverinfo_length = c->pkeys[i].serverinfo_length;
2834 void ssl_update_cache(SSL *s, int mode)
2839 * If the session_id_length is 0, we are not supposed to cache it, and it
2840 * would be rather hard to do anyway :-)
2842 if (s->session->session_id_length == 0)
2845 i = s->session_ctx->session_cache_mode;
2846 if ((i & mode) && (!s->hit)
2847 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2848 || SSL_CTX_add_session(s->session_ctx, s->session))
2849 && (s->session_ctx->new_session_cb != NULL)) {
2850 SSL_SESSION_up_ref(s->session);
2851 if (!s->session_ctx->new_session_cb(s, s->session))
2852 SSL_SESSION_free(s->session);
2855 /* auto flush every 255 connections */
2856 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2857 if ((((mode & SSL_SESS_CACHE_CLIENT)
2858 ? s->session_ctx->stats.sess_connect_good
2859 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2860 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2865 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2870 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2875 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2879 if (s->method != meth) {
2880 const SSL_METHOD *sm = s->method;
2881 int (*hf)(SSL *) = s->handshake_func;
2883 if (sm->version == meth->version)
2888 ret = s->method->ssl_new(s);
2891 if (hf == sm->ssl_connect)
2892 s->handshake_func = meth->ssl_connect;
2893 else if (hf == sm->ssl_accept)
2894 s->handshake_func = meth->ssl_accept;
2899 int SSL_get_error(const SSL *s, int i)
2906 return (SSL_ERROR_NONE);
2909 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2910 * where we do encode the error
2912 if ((l = ERR_peek_error()) != 0) {
2913 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2914 return (SSL_ERROR_SYSCALL);
2916 return (SSL_ERROR_SSL);
2919 if ((i < 0) && SSL_want_read(s)) {
2920 bio = SSL_get_rbio(s);
2921 if (BIO_should_read(bio))
2922 return (SSL_ERROR_WANT_READ);
2923 else if (BIO_should_write(bio))
2925 * This one doesn't make too much sense ... We never try to write
2926 * to the rbio, and an application program where rbio and wbio
2927 * are separate couldn't even know what it should wait for.
2928 * However if we ever set s->rwstate incorrectly (so that we have
2929 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2930 * wbio *are* the same, this test works around that bug; so it
2931 * might be safer to keep it.
2933 return (SSL_ERROR_WANT_WRITE);
2934 else if (BIO_should_io_special(bio)) {
2935 reason = BIO_get_retry_reason(bio);
2936 if (reason == BIO_RR_CONNECT)
2937 return (SSL_ERROR_WANT_CONNECT);
2938 else if (reason == BIO_RR_ACCEPT)
2939 return (SSL_ERROR_WANT_ACCEPT);
2941 return (SSL_ERROR_SYSCALL); /* unknown */
2945 if ((i < 0) && SSL_want_write(s)) {
2946 bio = SSL_get_wbio(s);
2947 if (BIO_should_write(bio))
2948 return (SSL_ERROR_WANT_WRITE);
2949 else if (BIO_should_read(bio))
2951 * See above (SSL_want_read(s) with BIO_should_write(bio))
2953 return (SSL_ERROR_WANT_READ);
2954 else if (BIO_should_io_special(bio)) {
2955 reason = BIO_get_retry_reason(bio);
2956 if (reason == BIO_RR_CONNECT)
2957 return (SSL_ERROR_WANT_CONNECT);
2958 else if (reason == BIO_RR_ACCEPT)
2959 return (SSL_ERROR_WANT_ACCEPT);
2961 return (SSL_ERROR_SYSCALL);
2964 if ((i < 0) && SSL_want_x509_lookup(s)) {
2965 return (SSL_ERROR_WANT_X509_LOOKUP);
2967 if ((i < 0) && SSL_want_async(s)) {
2968 return SSL_ERROR_WANT_ASYNC;
2972 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2973 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2974 return (SSL_ERROR_ZERO_RETURN);
2976 return (SSL_ERROR_SYSCALL);
2979 static int ssl_do_handshake_intern(void *vargs)
2981 struct ssl_async_args *args;
2984 args = (struct ssl_async_args *)vargs;
2987 return s->handshake_func(s);
2990 int SSL_do_handshake(SSL *s)
2994 if (s->handshake_func == NULL) {
2995 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2999 s->method->ssl_renegotiate_check(s);
3001 if (SSL_in_init(s) || SSL_in_before(s)) {
3002 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3003 struct ssl_async_args args;
3007 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3009 ret = s->handshake_func(s);
3015 void SSL_set_accept_state(SSL *s)
3019 ossl_statem_clear(s);
3020 s->handshake_func = s->method->ssl_accept;
3024 void SSL_set_connect_state(SSL *s)
3028 ossl_statem_clear(s);
3029 s->handshake_func = s->method->ssl_connect;
3033 int ssl_undefined_function(SSL *s)
3035 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3039 int ssl_undefined_void_function(void)
3041 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3042 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3046 int ssl_undefined_const_function(const SSL *s)
3051 const SSL_METHOD *ssl_bad_method(int ver)
3053 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3057 const char *ssl_protocol_to_string(int version)
3059 if (version == TLS1_2_VERSION)
3061 else if (version == TLS1_1_VERSION)
3063 else if (version == TLS1_VERSION)
3065 else if (version == SSL3_VERSION)
3067 else if (version == DTLS1_BAD_VER)
3069 else if (version == DTLS1_VERSION)
3071 else if (version == DTLS1_2_VERSION)
3077 const char *SSL_get_version(const SSL *s)
3079 return ssl_protocol_to_string(s->version);
3082 SSL *SSL_dup(SSL *s)
3084 STACK_OF(X509_NAME) *sk;
3089 /* If we're not quiescent, just up_ref! */
3090 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3091 CRYPTO_atomic_add(&s->references, 1, &i, s->lock);
3096 * Otherwise, copy configuration state, and session if set.
3098 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3101 if (s->session != NULL) {
3103 * Arranges to share the same session via up_ref. This "copies"
3104 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3106 if (!SSL_copy_session_id(ret, s))
3110 * No session has been established yet, so we have to expect that
3111 * s->cert or ret->cert will be changed later -- they should not both
3112 * point to the same object, and thus we can't use
3113 * SSL_copy_session_id.
3115 if (!SSL_set_ssl_method(ret, s->method))
3118 if (s->cert != NULL) {
3119 ssl_cert_free(ret->cert);
3120 ret->cert = ssl_cert_dup(s->cert);
3121 if (ret->cert == NULL)
3125 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
3129 ssl_dane_dup(ret, s);
3130 ret->version = s->version;
3131 ret->options = s->options;
3132 ret->mode = s->mode;
3133 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3134 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3135 ret->msg_callback = s->msg_callback;
3136 ret->msg_callback_arg = s->msg_callback_arg;
3137 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3138 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3139 ret->generate_session_id = s->generate_session_id;
3141 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3143 /* copy app data, a little dangerous perhaps */
3144 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3147 /* setup rbio, and wbio */
3148 if (s->rbio != NULL) {
3149 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3152 if (s->wbio != NULL) {
3153 if (s->wbio != s->rbio) {
3154 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3157 ret->wbio = ret->rbio;
3160 ret->server = s->server;
3161 if (s->handshake_func) {
3163 SSL_set_accept_state(ret);
3165 SSL_set_connect_state(ret);
3167 ret->shutdown = s->shutdown;
3170 ret->default_passwd_callback = s->default_passwd_callback;
3171 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3173 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3175 /* dup the cipher_list and cipher_list_by_id stacks */
3176 if (s->cipher_list != NULL) {
3177 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3180 if (s->cipher_list_by_id != NULL)
3181 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3185 /* Dup the client_CA list */
3186 if (s->client_CA != NULL) {
3187 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
3189 ret->client_CA = sk;
3190 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3191 xn = sk_X509_NAME_value(sk, i);
3192 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3205 void ssl_clear_cipher_ctx(SSL *s)
3207 if (s->enc_read_ctx != NULL) {
3208 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3209 s->enc_read_ctx = NULL;
3211 if (s->enc_write_ctx != NULL) {
3212 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3213 s->enc_write_ctx = NULL;
3215 #ifndef OPENSSL_NO_COMP
3216 COMP_CTX_free(s->expand);
3218 COMP_CTX_free(s->compress);
3223 X509 *SSL_get_certificate(const SSL *s)
3225 if (s->cert != NULL)
3226 return (s->cert->key->x509);
3231 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3233 if (s->cert != NULL)
3234 return (s->cert->key->privatekey);
3239 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3241 if (ctx->cert != NULL)
3242 return ctx->cert->key->x509;
3247 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3249 if (ctx->cert != NULL)
3250 return ctx->cert->key->privatekey;
3255 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3257 if ((s->session != NULL) && (s->session->cipher != NULL))
3258 return (s->session->cipher);
3262 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3264 #ifndef OPENSSL_NO_COMP
3265 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3271 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3273 #ifndef OPENSSL_NO_COMP
3274 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3280 int ssl_init_wbio_buffer(SSL *s, int push)
3284 if (s->bbio == NULL) {
3285 bbio = BIO_new(BIO_f_buffer());
3291 if (s->bbio == s->wbio)
3292 s->wbio = BIO_pop(s->wbio);
3294 (void)BIO_reset(bbio);
3295 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3296 if (!BIO_set_read_buffer_size(bbio, 1)) {
3297 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3301 if (s->wbio != bbio)
3302 s->wbio = BIO_push(bbio, s->wbio);
3304 if (s->wbio == bbio)
3305 s->wbio = BIO_pop(bbio);
3310 void ssl_free_wbio_buffer(SSL *s)
3312 /* callers ensure s is never null */
3313 if (s->bbio == NULL)
3316 if (s->bbio == s->wbio) {
3317 /* remove buffering */
3318 s->wbio = BIO_pop(s->wbio);
3321 * not the usual REF_DEBUG, but this avoids
3322 * adding one more preprocessor symbol
3324 assert(s->wbio != NULL);
3331 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3333 ctx->quiet_shutdown = mode;
3336 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3338 return (ctx->quiet_shutdown);
3341 void SSL_set_quiet_shutdown(SSL *s, int mode)
3343 s->quiet_shutdown = mode;
3346 int SSL_get_quiet_shutdown(const SSL *s)
3348 return (s->quiet_shutdown);
3351 void SSL_set_shutdown(SSL *s, int mode)
3356 int SSL_get_shutdown(const SSL *s)
3358 return (s->shutdown);
3361 int SSL_version(const SSL *s)
3363 return (s->version);
3366 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3371 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3374 if (ssl->ctx == ctx)
3377 ctx = ssl->initial_ctx;
3378 new_cert = ssl_cert_dup(ctx->cert);
3379 if (new_cert == NULL) {
3382 ssl_cert_free(ssl->cert);
3383 ssl->cert = new_cert;
3386 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3387 * so setter APIs must prevent invalid lengths from entering the system.
3389 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3392 * If the session ID context matches that of the parent SSL_CTX,
3393 * inherit it from the new SSL_CTX as well. If however the context does
3394 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3395 * leave it unchanged.
3397 if ((ssl->ctx != NULL) &&
3398 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3399 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3400 ssl->sid_ctx_length = ctx->sid_ctx_length;
3401 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3404 SSL_CTX_up_ref(ctx);
3405 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3411 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3413 return (X509_STORE_set_default_paths(ctx->cert_store));
3416 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3418 X509_LOOKUP *lookup;
3420 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3423 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3425 /* Clear any errors if the default directory does not exist */
3431 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3433 X509_LOOKUP *lookup;
3435 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3439 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3441 /* Clear any errors if the default file does not exist */
3447 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3450 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3453 void SSL_set_info_callback(SSL *ssl,
3454 void (*cb) (const SSL *ssl, int type, int val))
3456 ssl->info_callback = cb;
3460 * One compiler (Diab DCC) doesn't like argument names in returned function
3463 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3466 return ssl->info_callback;
3469 void SSL_set_verify_result(SSL *ssl, long arg)
3471 ssl->verify_result = arg;
3474 long SSL_get_verify_result(const SSL *ssl)
3476 return (ssl->verify_result);
3479 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3482 return sizeof(ssl->s3->client_random);
3483 if (outlen > sizeof(ssl->s3->client_random))
3484 outlen = sizeof(ssl->s3->client_random);
3485 memcpy(out, ssl->s3->client_random, outlen);
3489 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3492 return sizeof(ssl->s3->server_random);
3493 if (outlen > sizeof(ssl->s3->server_random))
3494 outlen = sizeof(ssl->s3->server_random);
3495 memcpy(out, ssl->s3->server_random, outlen);
3499 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3500 unsigned char *out, size_t outlen)
3502 if (session->master_key_length < 0) {
3503 /* Should never happen */
3507 return session->master_key_length;
3508 if (outlen > (size_t)session->master_key_length)
3509 outlen = session->master_key_length;
3510 memcpy(out, session->master_key, outlen);
3514 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3516 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3519 void *SSL_get_ex_data(const SSL *s, int idx)
3521 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3524 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3526 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3529 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3531 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3539 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3541 return (ctx->cert_store);
3544 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3546 X509_STORE_free(ctx->cert_store);
3547 ctx->cert_store = store;
3550 int SSL_want(const SSL *s)
3552 return (s->rwstate);
3556 * \brief Set the callback for generating temporary DH keys.
3557 * \param ctx the SSL context.
3558 * \param dh the callback
3561 #ifndef OPENSSL_NO_DH
3562 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3563 DH *(*dh) (SSL *ssl, int is_export,
3566 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3569 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3572 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3576 #ifndef OPENSSL_NO_PSK
3577 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3579 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3580 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3581 SSL_R_DATA_LENGTH_TOO_LONG);
3584 OPENSSL_free(ctx->cert->psk_identity_hint);
3585 if (identity_hint != NULL) {
3586 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3587 if (ctx->cert->psk_identity_hint == NULL)
3590 ctx->cert->psk_identity_hint = NULL;
3594 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3599 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3600 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3603 OPENSSL_free(s->cert->psk_identity_hint);
3604 if (identity_hint != NULL) {
3605 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3606 if (s->cert->psk_identity_hint == NULL)
3609 s->cert->psk_identity_hint = NULL;
3613 const char *SSL_get_psk_identity_hint(const SSL *s)
3615 if (s == NULL || s->session == NULL)
3617 return (s->session->psk_identity_hint);
3620 const char *SSL_get_psk_identity(const SSL *s)
3622 if (s == NULL || s->session == NULL)
3624 return (s->session->psk_identity);
3627 void SSL_set_psk_client_callback(SSL *s,
3628 unsigned int (*cb) (SSL *ssl,
3637 s->psk_client_callback = cb;
3640 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3641 unsigned int (*cb) (SSL *ssl,
3650 ctx->psk_client_callback = cb;
3653 void SSL_set_psk_server_callback(SSL *s,
3654 unsigned int (*cb) (SSL *ssl,
3655 const char *identity,
3660 s->psk_server_callback = cb;
3663 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3664 unsigned int (*cb) (SSL *ssl,
3665 const char *identity,
3670 ctx->psk_server_callback = cb;
3674 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3675 void (*cb) (int write_p, int version,
3676 int content_type, const void *buf,
3677 size_t len, SSL *ssl, void *arg))
3679 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3682 void SSL_set_msg_callback(SSL *ssl,
3683 void (*cb) (int write_p, int version,
3684 int content_type, const void *buf,
3685 size_t len, SSL *ssl, void *arg))
3687 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3690 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3691 int (*cb) (SSL *ssl,
3695 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3696 (void (*)(void))cb);
3699 void SSL_set_not_resumable_session_callback(SSL *ssl,
3700 int (*cb) (SSL *ssl,
3701 int is_forward_secure))
3703 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3704 (void (*)(void))cb);
3708 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3709 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3710 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3714 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3716 ssl_clear_hash_ctx(hash);
3717 *hash = EVP_MD_CTX_new();
3718 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3719 EVP_MD_CTX_free(*hash);
3726 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3730 EVP_MD_CTX_free(*hash);
3734 /* Retrieve handshake hashes */
3735 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3737 EVP_MD_CTX *ctx = NULL;
3738 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
3739 int ret = EVP_MD_CTX_size(hdgst);
3740 if (ret < 0 || ret > outlen) {
3744 ctx = EVP_MD_CTX_new();
3749 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
3750 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
3753 EVP_MD_CTX_free(ctx);
3757 int SSL_session_reused(SSL *s)
3762 int SSL_is_server(SSL *s)
3767 #if OPENSSL_API_COMPAT < 0x10100000L
3768 void SSL_set_debug(SSL *s, int debug)
3770 /* Old function was do-nothing anyway... */
3777 void SSL_set_security_level(SSL *s, int level)
3779 s->cert->sec_level = level;
3782 int SSL_get_security_level(const SSL *s)
3784 return s->cert->sec_level;
3787 void SSL_set_security_callback(SSL *s,
3788 int (*cb) (const SSL *s, const SSL_CTX *ctx, int op,
3789 int bits, int nid, void *other,
3792 s->cert->sec_cb = cb;
3795 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s, const SSL_CTX *ctx, int op,
3797 void *other, void *ex) {
3798 return s->cert->sec_cb;
3801 void SSL_set0_security_ex_data(SSL *s, void *ex)
3803 s->cert->sec_ex = ex;
3806 void *SSL_get0_security_ex_data(const SSL *s)
3808 return s->cert->sec_ex;
3811 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3813 ctx->cert->sec_level = level;
3816 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3818 return ctx->cert->sec_level;
3821 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3822 int (*cb) (const SSL *s, const SSL_CTX *ctx, int op,
3823 int bits, int nid, void *other,
3826 ctx->cert->sec_cb = cb;
3829 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
3835 return ctx->cert->sec_cb;
3838 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3840 ctx->cert->sec_ex = ex;
3843 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3845 return ctx->cert->sec_ex;
3850 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3851 * can return unsigned long, instead of the generic long return value from the
3852 * control interface.
3854 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
3856 return ctx->options;
3858 unsigned long SSL_get_options(const SSL* s)
3862 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
3864 return ctx->options |= op;
3866 unsigned long SSL_set_options(SSL *s, unsigned long op)
3868 return s->options |= op;
3870 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
3872 return ctx->options &= ~op;
3874 unsigned long SSL_clear_options(SSL *s, unsigned long op)
3876 return s->options &= ~op;
3879 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
3881 return s->verified_chain;
3884 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
3886 #ifndef OPENSSL_NO_CT
3889 * Moves SCTs from the |src| stack to the |dst| stack.
3890 * The source of each SCT will be set to |origin|.
3891 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3893 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3895 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src, sct_source_t origin)
3901 *dst = sk_SCT_new_null();
3903 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
3908 while ((sct = sk_SCT_pop(src)) != NULL) {
3909 if (SCT_set_source(sct, origin) != 1)
3912 if (sk_SCT_push(*dst, sct) <= 0)
3920 sk_SCT_push(src, sct); /* Put the SCT back */
3925 * Look for data collected during ServerHello and parse if found.
3926 * Return 1 on success, 0 on failure.
3928 static int ct_extract_tls_extension_scts(SSL *s)
3930 int scts_extracted = 0;
3932 if (s->tlsext_scts != NULL) {
3933 const unsigned char *p = s->tlsext_scts;
3934 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->tlsext_scts_len);
3936 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
3938 SCT_LIST_free(scts);
3941 return scts_extracted;
3945 * Checks for an OCSP response and then attempts to extract any SCTs found if it
3946 * contains an SCT X509 extension. They will be stored in |s->scts|.
3948 * - The number of SCTs extracted, assuming an OCSP response exists.
3949 * - 0 if no OCSP response exists or it contains no SCTs.
3950 * - A negative integer if an error occurs.
3952 static int ct_extract_ocsp_response_scts(SSL *s)
3954 int scts_extracted = 0;
3955 const unsigned char *p;
3956 OCSP_BASICRESP *br = NULL;
3957 OCSP_RESPONSE *rsp = NULL;
3958 STACK_OF(SCT) *scts = NULL;
3961 if (s->tlsext_ocsp_resp == NULL || s->tlsext_ocsp_resplen == 0)
3964 p = s->tlsext_ocsp_resp;
3965 rsp = d2i_OCSP_RESPONSE(NULL, &p, s->tlsext_ocsp_resplen);
3969 br = OCSP_response_get1_basic(rsp);
3973 for (i = 0; i < OCSP_resp_count(br); ++i) {
3974 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
3979 scts = OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
3980 scts_extracted = ct_move_scts(&s->scts, scts,
3981 SCT_SOURCE_OCSP_STAPLED_RESPONSE);
3982 if (scts_extracted < 0)
3986 SCT_LIST_free(scts);
3987 OCSP_BASICRESP_free(br);
3988 OCSP_RESPONSE_free(rsp);
3989 return scts_extracted;
3993 * Attempts to extract SCTs from the peer certificate.
3994 * Return the number of SCTs extracted, or a negative integer if an error
3997 static int ct_extract_x509v3_extension_scts(SSL *s)
3999 int scts_extracted = 0;
4000 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4003 STACK_OF(SCT) *scts =
4004 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4007 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4009 SCT_LIST_free(scts);
4012 return scts_extracted;
4016 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4017 * response (if it exists) and X509v3 extensions in the certificate.
4018 * Returns NULL if an error occurs.
4020 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4022 if (!s->scts_parsed) {
4023 if (ct_extract_tls_extension_scts(s) < 0 ||
4024 ct_extract_ocsp_response_scts(s) < 0 ||
4025 ct_extract_x509v3_extension_scts(s) < 0)
4035 int SSL_set_ct_validation_callback(SSL *s, ct_validation_cb callback, void *arg)
4040 * Since code exists that uses the custom extension handler for CT, look
4041 * for this and throw an error if they have already registered to use CT.
4043 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4044 TLSEXT_TYPE_signed_certificate_timestamp)) {
4045 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4046 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4050 s->ct_validation_callback = callback;
4051 s->ct_validation_callback_arg = arg;
4053 if (callback != NULL) {
4054 /* If we are validating CT, then we MUST accept SCTs served via OCSP */
4055 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4064 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx, ct_validation_cb callback,
4070 * Since code exists that uses the custom extension handler for CT, look for
4071 * this and throw an error if they have already registered to use CT.
4073 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4074 TLSEXT_TYPE_signed_certificate_timestamp)) {
4075 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4076 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4080 ctx->ct_validation_callback = callback;
4081 ctx->ct_validation_callback_arg = arg;
4087 ct_validation_cb SSL_get_ct_validation_callback(const SSL *s)
4089 return s->ct_validation_callback;
4092 ct_validation_cb SSL_CTX_get_ct_validation_callback(const SSL_CTX *ctx)
4094 return ctx->ct_validation_callback;
4097 int ssl_validate_ct(SSL *s)
4100 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4101 X509 *issuer = NULL;
4102 CT_POLICY_EVAL_CTX *ctx = NULL;
4103 const STACK_OF(SCT) *scts;
4105 /* If no callback is set, attempt no validation - just return success */
4106 if (s->ct_validation_callback == NULL)
4110 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_NO_CERTIFICATE_ASSIGNED);
4114 if (s->verified_chain != NULL && sk_X509_num(s->verified_chain) > 1)
4115 issuer = sk_X509_value(s->verified_chain, 1);
4117 ctx = CT_POLICY_EVAL_CTX_new();
4119 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4123 CT_POLICY_EVAL_CTX_set0_cert(ctx, cert);
4124 CT_POLICY_EVAL_CTX_set0_issuer(ctx, issuer);
4125 CT_POLICY_EVAL_CTX_set0_log_store(ctx, s->ctx->ctlog_store);
4127 scts = SSL_get0_peer_scts(s);
4129 if (SCT_LIST_validate(scts, ctx) != 1) {
4130 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4134 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4136 ret = 0; /* This function returns 0 on failure */
4139 CT_POLICY_EVAL_CTX_free(ctx);
4143 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4145 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
4148 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4150 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4153 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE *logs)
4155 CTLOG_STORE_free(ctx->ctlog_store);
4156 ctx->ctlog_store = logs;
4159 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4161 return ctx->ctlog_store;