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 #ifndef OPENSSL_NO_DH
156 # include <openssl/dh.h>
158 #ifndef OPENSSL_NO_ENGINE
159 # include <openssl/engine.h>
161 #include <openssl/async.h>
162 #ifndef OPENSSL_NO_CT
163 # include <openssl/ct.h>
166 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
168 SSL3_ENC_METHOD ssl3_undef_enc_method = {
170 * evil casts, but these functions are only called if there's a library
173 (int (*)(SSL *, SSL3_RECORD *, unsigned int, int))ssl_undefined_function,
174 (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function,
175 ssl_undefined_function,
176 (int (*)(SSL *, unsigned char *, unsigned char *, int))
177 ssl_undefined_function,
178 (int (*)(SSL *, int))ssl_undefined_function,
179 (int (*)(SSL *, const char *, int, unsigned char *))
180 ssl_undefined_function,
181 0, /* finish_mac_length */
182 NULL, /* client_finished_label */
183 0, /* client_finished_label_len */
184 NULL, /* server_finished_label */
185 0, /* server_finished_label_len */
186 (int (*)(int))ssl_undefined_function,
187 (int (*)(SSL *, unsigned char *, size_t, const char *,
188 size_t, const unsigned char *, size_t,
189 int use_context))ssl_undefined_function,
192 struct ssl_async_args {
196 enum { READFUNC, WRITEFUNC, OTHERFUNC} type;
198 int (*func_read)(SSL *, void *, int);
199 int (*func_write)(SSL *, const void *, int);
200 int (*func_other)(SSL *);
204 static const struct {
209 { DANETLS_MATCHING_FULL, 0, NID_undef },
210 { DANETLS_MATCHING_2256, 1, NID_sha256 },
211 { DANETLS_MATCHING_2512, 2, NID_sha512 },
214 static int dane_ctx_enable(struct dane_ctx_st *dctx)
216 const EVP_MD **mdevp;
218 uint8_t mdmax = DANETLS_MATCHING_LAST;
219 int n = ((int) mdmax) + 1; /* int to handle PrivMatch(255) */
222 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
223 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
225 if (mdord == NULL || mdevp == NULL) {
227 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
231 /* Install default entries */
232 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
235 if (dane_mds[i].nid == NID_undef ||
236 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
238 mdevp[dane_mds[i].mtype] = md;
239 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
249 static void dane_ctx_final(struct dane_ctx_st *dctx)
251 OPENSSL_free(dctx->mdevp);
254 OPENSSL_free(dctx->mdord);
259 static void tlsa_free(danetls_record *t)
263 OPENSSL_free(t->data);
264 EVP_PKEY_free(t->spki);
268 static void dane_final(struct dane_st *dane)
270 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
273 sk_X509_pop_free(dane->certs, X509_free);
276 X509_free(dane->mcert);
284 * dane_copy - Copy dane configuration, sans verification state.
286 static int ssl_dane_dup(SSL *to, SSL *from)
291 if (!DANETLS_ENABLED(&from->dane))
294 dane_final(&to->dane);
296 num = sk_danetls_record_num(from->dane.trecs);
297 for (i = 0; i < num; ++i) {
298 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
299 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
300 t->data, t->dlen) <= 0)
306 static int dane_mtype_set(
307 struct dane_ctx_st *dctx,
314 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
315 SSLerr(SSL_F_DANE_MTYPE_SET,
316 SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
320 if (mtype > dctx->mdmax) {
321 const EVP_MD **mdevp;
323 int n = ((int) mtype) + 1;
325 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
327 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
332 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
334 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
339 /* Zero-fill any gaps */
340 for (i = dctx->mdmax+1; i < mtype; ++i) {
348 dctx->mdevp[mtype] = md;
349 /* Coerce ordinal of disabled matching types to 0 */
350 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
355 static const EVP_MD *tlsa_md_get(struct dane_st *dane, uint8_t mtype)
357 if (mtype > dane->dctx->mdmax)
359 return dane->dctx->mdevp[mtype];
362 static int dane_tlsa_add(
363 struct dane_st *dane,
371 const EVP_MD *md = NULL;
372 int ilen = (int)dlen;
375 if (dane->trecs == NULL) {
376 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
380 if (ilen < 0 || dlen != (size_t)ilen) {
381 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
385 if (usage > DANETLS_USAGE_LAST) {
386 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
390 if (selector > DANETLS_SELECTOR_LAST) {
391 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
395 if (mtype != DANETLS_MATCHING_FULL) {
396 md = tlsa_md_get(dane, mtype);
398 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
403 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
404 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
408 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
412 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
413 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
418 t->selector = selector;
420 t->data = OPENSSL_malloc(ilen);
421 if (t->data == NULL) {
423 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
426 memcpy(t->data, data, ilen);
429 /* Validate and cache full certificate or public key */
430 if (mtype == DANETLS_MATCHING_FULL) {
431 const unsigned char *p = data;
433 EVP_PKEY *pkey = NULL;
436 case DANETLS_SELECTOR_CERT:
437 if (!d2i_X509(&cert, &p, dlen) || p < data ||
438 dlen != (size_t)(p - data)) {
440 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
443 if (X509_get0_pubkey(cert) == NULL) {
445 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
449 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
455 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
456 * records that contain full certificates of trust-anchors that are
457 * not present in the wire chain. For usage PKIX-TA(0), we augment
458 * the chain with untrusted Full(0) certificates from DNS, in case
459 * they are missing from the chain.
461 if ((dane->certs == NULL &&
462 (dane->certs = sk_X509_new_null()) == NULL) ||
463 !sk_X509_push(dane->certs, cert)) {
464 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
471 case DANETLS_SELECTOR_SPKI:
472 if (!d2i_PUBKEY(&pkey, &p, dlen) || p < data ||
473 dlen != (size_t)(p - data)) {
475 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
480 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
481 * records that contain full bare keys of trust-anchors that are
482 * not present in the wire chain.
484 if (usage == DANETLS_USAGE_DANE_TA)
493 * Find the right insertion point for the new record.
495 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
496 * they can be processed first, as they require no chain building, and no
497 * expiration or hostname checks. Because DANE-EE(3) is numerically
498 * largest, this is accomplished via descending sort by "usage".
500 * We also sort in descending order by matching ordinal to simplify
501 * the implementation of digest agility in the verification code.
503 * The choice of order for the selector is not significant, so we
504 * use the same descending order for consistency.
506 for (i = 0; i < sk_danetls_record_num(dane->trecs); ++i) {
507 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
508 if (rec->usage > usage)
510 if (rec->usage < usage)
512 if (rec->selector > selector)
514 if (rec->selector < selector)
516 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
521 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
523 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
526 dane->umask |= DANETLS_USAGE_BIT(usage);
531 static void clear_ciphers(SSL *s)
533 /* clear the current cipher */
534 ssl_clear_cipher_ctx(s);
535 ssl_clear_hash_ctx(&s->read_hash);
536 ssl_clear_hash_ctx(&s->write_hash);
539 int SSL_clear(SSL *s)
541 if (s->method == NULL) {
542 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
546 if (ssl_clear_bad_session(s)) {
547 SSL_SESSION_free(s->session);
555 if (s->renegotiate) {
556 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
560 ossl_statem_clear(s);
562 s->version = s->method->version;
563 s->client_version = s->version;
564 s->rwstate = SSL_NOTHING;
566 BUF_MEM_free(s->init_buf);
571 /* Reset DANE verification result state */
574 X509_free(s->dane.mcert);
575 s->dane.mcert = NULL;
576 s->dane.mtlsa = NULL;
578 /* Clear the verification result peername */
579 X509_VERIFY_PARAM_move_peername(s->param, NULL);
582 * Check to see if we were changed into a different method, if so, revert
583 * back if we are not doing session-id reuse.
585 if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
586 && (s->method != s->ctx->method)) {
587 s->method->ssl_free(s);
588 s->method = s->ctx->method;
589 if (!s->method->ssl_new(s))
592 s->method->ssl_clear(s);
594 RECORD_LAYER_clear(&s->rlayer);
599 /** Used to change an SSL_CTXs default SSL method type */
600 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
602 STACK_OF(SSL_CIPHER) *sk;
606 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
607 &(ctx->cipher_list_by_id),
608 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
609 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
610 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
611 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
617 SSL *SSL_new(SSL_CTX *ctx)
622 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
625 if (ctx->method == NULL) {
626 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
630 s = OPENSSL_zalloc(sizeof(*s));
634 RECORD_LAYER_init(&s->rlayer, s);
636 s->options = ctx->options;
637 s->min_proto_version = ctx->min_proto_version;
638 s->max_proto_version = ctx->max_proto_version;
640 s->max_cert_list = ctx->max_cert_list;
644 * Earlier library versions used to copy the pointer to the CERT, not
645 * its contents; only when setting new parameters for the per-SSL
646 * copy, ssl_cert_new would be called (and the direct reference to
647 * the per-SSL_CTX settings would be lost, but those still were
648 * indirectly accessed for various purposes, and for that reason they
649 * used to be known as s->ctx->default_cert). Now we don't look at the
650 * SSL_CTX's CERT after having duplicated it once.
652 s->cert = ssl_cert_dup(ctx->cert);
656 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
657 s->msg_callback = ctx->msg_callback;
658 s->msg_callback_arg = ctx->msg_callback_arg;
659 s->verify_mode = ctx->verify_mode;
660 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
661 s->sid_ctx_length = ctx->sid_ctx_length;
662 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
663 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
664 s->verify_callback = ctx->default_verify_callback;
665 s->generate_session_id = ctx->generate_session_id;
667 s->param = X509_VERIFY_PARAM_new();
668 if (s->param == NULL)
670 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
671 s->quiet_shutdown = ctx->quiet_shutdown;
672 s->max_send_fragment = ctx->max_send_fragment;
673 s->split_send_fragment = ctx->split_send_fragment;
674 s->max_pipelines = ctx->max_pipelines;
675 if (s->max_pipelines > 1)
676 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
677 if (ctx->default_read_buf_len > 0)
678 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
680 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
682 s->tlsext_debug_cb = 0;
683 s->tlsext_debug_arg = NULL;
684 s->tlsext_ticket_expected = 0;
685 s->tlsext_status_type = -1;
686 s->tlsext_status_expected = 0;
687 s->tlsext_ocsp_ids = NULL;
688 s->tlsext_ocsp_exts = NULL;
689 s->tlsext_ocsp_resp = NULL;
690 s->tlsext_ocsp_resplen = -1;
691 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
692 s->initial_ctx = ctx;
693 # ifndef OPENSSL_NO_EC
694 if (ctx->tlsext_ecpointformatlist) {
695 s->tlsext_ecpointformatlist =
696 OPENSSL_memdup(ctx->tlsext_ecpointformatlist,
697 ctx->tlsext_ecpointformatlist_length);
698 if (!s->tlsext_ecpointformatlist)
700 s->tlsext_ecpointformatlist_length =
701 ctx->tlsext_ecpointformatlist_length;
703 if (ctx->tlsext_ellipticcurvelist) {
704 s->tlsext_ellipticcurvelist =
705 OPENSSL_memdup(ctx->tlsext_ellipticcurvelist,
706 ctx->tlsext_ellipticcurvelist_length);
707 if (!s->tlsext_ellipticcurvelist)
709 s->tlsext_ellipticcurvelist_length =
710 ctx->tlsext_ellipticcurvelist_length;
713 # ifndef OPENSSL_NO_NEXTPROTONEG
714 s->next_proto_negotiated = NULL;
717 if (s->ctx->alpn_client_proto_list) {
718 s->alpn_client_proto_list =
719 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
720 if (s->alpn_client_proto_list == NULL)
722 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
723 s->ctx->alpn_client_proto_list_len);
724 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
727 s->verified_chain = NULL;
728 s->verify_result = X509_V_OK;
730 s->default_passwd_callback = ctx->default_passwd_callback;
731 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
733 s->method = ctx->method;
735 if (!s->method->ssl_new(s))
738 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
743 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
745 #ifndef OPENSSL_NO_PSK
746 s->psk_client_callback = ctx->psk_client_callback;
747 s->psk_server_callback = ctx->psk_server_callback;
752 #ifndef OPENSSL_NO_CT
753 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
754 ctx->ct_validation_callback_arg))
761 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
765 void SSL_up_ref(SSL *s)
767 CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL);
770 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
771 unsigned int sid_ctx_len)
773 if (sid_ctx_len > sizeof ctx->sid_ctx) {
774 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
775 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
778 ctx->sid_ctx_length = sid_ctx_len;
779 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
784 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
785 unsigned int sid_ctx_len)
787 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
788 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
789 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
792 ssl->sid_ctx_length = sid_ctx_len;
793 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
798 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
800 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
801 ctx->generate_session_id = cb;
802 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
806 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
808 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
809 ssl->generate_session_id = cb;
810 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
814 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
818 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
819 * we can "construct" a session to give us the desired check - ie. to
820 * find if there's a session in the hash table that would conflict with
821 * any new session built out of this id/id_len and the ssl_version in use
826 if (id_len > sizeof r.session_id)
829 r.ssl_version = ssl->version;
830 r.session_id_length = id_len;
831 memcpy(r.session_id, id, id_len);
833 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
834 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
835 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
839 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
841 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
844 int SSL_set_purpose(SSL *s, int purpose)
846 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
849 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
851 return X509_VERIFY_PARAM_set_trust(s->param, trust);
854 int SSL_set_trust(SSL *s, int trust)
856 return X509_VERIFY_PARAM_set_trust(s->param, trust);
859 int SSL_set1_host(SSL *s, const char *hostname)
861 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
864 int SSL_add1_host(SSL *s, const char *hostname)
866 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
869 void SSL_set_hostflags(SSL *s, unsigned int flags)
871 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
874 const char *SSL_get0_peername(SSL *s)
876 return X509_VERIFY_PARAM_get0_peername(s->param);
879 int SSL_CTX_dane_enable(SSL_CTX *ctx)
881 return dane_ctx_enable(&ctx->dane);
884 int SSL_dane_enable(SSL *s, const char *basedomain)
886 struct dane_st *dane = &s->dane;
888 if (s->ctx->dane.mdmax == 0) {
889 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
892 if (dane->trecs != NULL) {
893 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
898 * Default SNI name. This rejects empty names, while set1_host below
899 * accepts them and disables host name checks. To avoid side-effects with
900 * invalid input, set the SNI name first.
902 if (s->tlsext_hostname == NULL) {
903 if (!SSL_set_tlsext_host_name(s, basedomain)) {
904 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
909 /* Primary RFC6125 reference identifier */
910 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
911 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
917 dane->dctx = &s->ctx->dane;
918 dane->trecs = sk_danetls_record_new_null();
920 if (dane->trecs == NULL) {
921 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
927 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
929 struct dane_st *dane = &s->dane;
931 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
935 *mcert = dane->mcert;
937 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
942 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
943 uint8_t *mtype, unsigned const char **data, size_t *dlen)
945 struct dane_st *dane = &s->dane;
947 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
951 *usage = dane->mtlsa->usage;
953 *selector = dane->mtlsa->selector;
955 *mtype = dane->mtlsa->mtype;
957 *data = dane->mtlsa->data;
959 *dlen = dane->mtlsa->dlen;
964 struct dane_st *SSL_get0_dane(SSL *s)
969 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
970 uint8_t mtype, unsigned char *data, size_t dlen)
972 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
975 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype, uint8_t ord)
977 return dane_mtype_set(&ctx->dane, md, mtype, ord);
980 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
982 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
985 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
987 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
990 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
995 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1000 void SSL_certs_clear(SSL *s)
1002 ssl_cert_clear_certs(s->cert);
1005 void SSL_free(SSL *s)
1012 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
1013 REF_PRINT_COUNT("SSL", s);
1016 REF_ASSERT_ISNT(i < 0);
1018 X509_VERIFY_PARAM_free(s->param);
1019 dane_final(&s->dane);
1020 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1022 if (s->bbio != NULL) {
1023 /* If the buffering BIO is in place, pop it off */
1024 if (s->bbio == s->wbio) {
1025 s->wbio = BIO_pop(s->wbio);
1030 BIO_free_all(s->rbio);
1031 if (s->wbio != s->rbio)
1032 BIO_free_all(s->wbio);
1034 BUF_MEM_free(s->init_buf);
1036 /* add extra stuff */
1037 sk_SSL_CIPHER_free(s->cipher_list);
1038 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1040 /* Make the next call work :-) */
1041 if (s->session != NULL) {
1042 ssl_clear_bad_session(s);
1043 SSL_SESSION_free(s->session);
1048 ssl_cert_free(s->cert);
1049 /* Free up if allocated */
1051 OPENSSL_free(s->tlsext_hostname);
1052 SSL_CTX_free(s->initial_ctx);
1053 #ifndef OPENSSL_NO_EC
1054 OPENSSL_free(s->tlsext_ecpointformatlist);
1055 OPENSSL_free(s->tlsext_ellipticcurvelist);
1056 #endif /* OPENSSL_NO_EC */
1057 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
1058 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
1059 #ifndef OPENSSL_NO_CT
1060 SCT_LIST_free(s->scts);
1061 OPENSSL_free(s->tlsext_scts);
1063 OPENSSL_free(s->tlsext_ocsp_resp);
1064 OPENSSL_free(s->alpn_client_proto_list);
1066 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
1068 sk_X509_pop_free(s->verified_chain, X509_free);
1070 if (s->method != NULL)
1071 s->method->ssl_free(s);
1073 RECORD_LAYER_release(&s->rlayer);
1075 SSL_CTX_free(s->ctx);
1077 ASYNC_WAIT_CTX_free(s->waitctx);
1079 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1080 OPENSSL_free(s->next_proto_negotiated);
1083 #ifndef OPENSSL_NO_SRTP
1084 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1090 void SSL_set_rbio(SSL *s, BIO *rbio)
1092 if (s->rbio != rbio)
1093 BIO_free_all(s->rbio);
1097 void SSL_set_wbio(SSL *s, BIO *wbio)
1100 * If the output buffering BIO is still in place, remove it
1102 if (s->bbio != NULL) {
1103 if (s->wbio == s->bbio) {
1104 s->wbio = s->wbio->next_bio;
1105 s->bbio->next_bio = NULL;
1108 if (s->wbio != wbio && s->rbio != s->wbio)
1109 BIO_free_all(s->wbio);
1113 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1115 SSL_set_wbio(s, wbio);
1116 SSL_set_rbio(s, rbio);
1119 BIO *SSL_get_rbio(const SSL *s)
1124 BIO *SSL_get_wbio(const SSL *s)
1129 int SSL_get_fd(const SSL *s)
1131 return (SSL_get_rfd(s));
1134 int SSL_get_rfd(const SSL *s)
1139 b = SSL_get_rbio(s);
1140 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1142 BIO_get_fd(r, &ret);
1146 int SSL_get_wfd(const SSL *s)
1151 b = SSL_get_wbio(s);
1152 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1154 BIO_get_fd(r, &ret);
1158 #ifndef OPENSSL_NO_SOCK
1159 int SSL_set_fd(SSL *s, int fd)
1164 bio = BIO_new(BIO_s_socket());
1167 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1170 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1171 SSL_set_bio(s, bio, bio);
1177 int SSL_set_wfd(SSL *s, int fd)
1182 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
1183 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
1184 bio = BIO_new(BIO_s_socket());
1187 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1190 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1191 SSL_set_bio(s, SSL_get_rbio(s), bio);
1193 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
1199 int SSL_set_rfd(SSL *s, int fd)
1204 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
1205 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
1206 bio = BIO_new(BIO_s_socket());
1209 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1212 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1213 SSL_set_bio(s, bio, SSL_get_wbio(s));
1215 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
1222 /* return length of latest Finished message we sent, copy to 'buf' */
1223 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1227 if (s->s3 != NULL) {
1228 ret = s->s3->tmp.finish_md_len;
1231 memcpy(buf, s->s3->tmp.finish_md, count);
1236 /* return length of latest Finished message we expected, copy to 'buf' */
1237 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1241 if (s->s3 != NULL) {
1242 ret = s->s3->tmp.peer_finish_md_len;
1245 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1250 int SSL_get_verify_mode(const SSL *s)
1252 return (s->verify_mode);
1255 int SSL_get_verify_depth(const SSL *s)
1257 return X509_VERIFY_PARAM_get_depth(s->param);
1260 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1261 return (s->verify_callback);
1264 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1266 return (ctx->verify_mode);
1269 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1271 return X509_VERIFY_PARAM_get_depth(ctx->param);
1274 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1275 return (ctx->default_verify_callback);
1278 void SSL_set_verify(SSL *s, int mode,
1279 int (*callback) (int ok, X509_STORE_CTX *ctx))
1281 s->verify_mode = mode;
1282 if (callback != NULL)
1283 s->verify_callback = callback;
1286 void SSL_set_verify_depth(SSL *s, int depth)
1288 X509_VERIFY_PARAM_set_depth(s->param, depth);
1291 void SSL_set_read_ahead(SSL *s, int yes)
1293 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1296 int SSL_get_read_ahead(const SSL *s)
1298 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1301 int SSL_pending(const SSL *s)
1304 * SSL_pending cannot work properly if read-ahead is enabled
1305 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1306 * impossible to fix since SSL_pending cannot report errors that may be
1307 * observed while scanning the new data. (Note that SSL_pending() is
1308 * often used as a boolean value, so we'd better not return -1.)
1310 return (s->method->ssl_pending(s));
1313 X509 *SSL_get_peer_certificate(const SSL *s)
1317 if ((s == NULL) || (s->session == NULL))
1320 r = s->session->peer;
1330 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1334 if ((s == NULL) || (s->session == NULL))
1337 r = s->session->peer_chain;
1340 * If we are a client, cert_chain includes the peer's own certificate; if
1341 * we are a server, it does not.
1348 * Now in theory, since the calling process own 't' it should be safe to
1349 * modify. We need to be able to read f without being hassled
1351 int SSL_copy_session_id(SSL *t, const SSL *f)
1353 /* Do we need to to SSL locking? */
1354 if (!SSL_set_session(t, SSL_get_session(f))) {
1359 * what if we are setup for one protocol version but want to talk another
1361 if (t->method != f->method) {
1362 t->method->ssl_free(t);
1363 t->method = f->method;
1364 if (t->method->ssl_new(t) == 0)
1368 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
1369 ssl_cert_free(t->cert);
1371 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
1378 /* Fix this so it checks all the valid key/cert options */
1379 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1381 if ((ctx == NULL) ||
1382 (ctx->cert->key->x509 == NULL)) {
1383 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1384 SSL_R_NO_CERTIFICATE_ASSIGNED);
1387 if (ctx->cert->key->privatekey == NULL) {
1388 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1389 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1392 return (X509_check_private_key
1393 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1396 /* Fix this function so that it takes an optional type parameter */
1397 int SSL_check_private_key(const SSL *ssl)
1400 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1403 if (ssl->cert->key->x509 == NULL) {
1404 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1407 if (ssl->cert->key->privatekey == NULL) {
1408 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1411 return (X509_check_private_key(ssl->cert->key->x509,
1412 ssl->cert->key->privatekey));
1415 int SSL_waiting_for_async(SSL *s)
1423 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1425 ASYNC_WAIT_CTX *ctx = s->waitctx;
1429 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1432 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1433 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1435 ASYNC_WAIT_CTX *ctx = s->waitctx;
1439 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1443 int SSL_accept(SSL *s)
1445 if (s->handshake_func == NULL) {
1446 /* Not properly initialized yet */
1447 SSL_set_accept_state(s);
1450 return SSL_do_handshake(s);
1453 int SSL_connect(SSL *s)
1455 if (s->handshake_func == NULL) {
1456 /* Not properly initialized yet */
1457 SSL_set_connect_state(s);
1460 return SSL_do_handshake(s);
1463 long SSL_get_default_timeout(const SSL *s)
1465 return (s->method->get_timeout());
1468 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1469 int (*func)(void *)) {
1471 if (s->waitctx == NULL) {
1472 s->waitctx = ASYNC_WAIT_CTX_new();
1473 if (s->waitctx == NULL)
1476 switch(ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1477 sizeof(struct ssl_async_args))) {
1479 s->rwstate = SSL_NOTHING;
1480 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1483 s->rwstate = SSL_ASYNC_PAUSED;
1489 s->rwstate = SSL_NOTHING;
1490 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1491 /* Shouldn't happen */
1496 static int ssl_io_intern(void *vargs)
1498 struct ssl_async_args *args;
1503 args = (struct ssl_async_args *)vargs;
1507 switch (args->type) {
1509 return args->f.func_read(s, buf, num);
1511 return args->f.func_write(s, buf, num);
1513 return args->f.func_other(s);
1518 int SSL_read(SSL *s, void *buf, int num)
1520 if (s->handshake_func == NULL) {
1521 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1525 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1526 s->rwstate = SSL_NOTHING;
1530 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1531 struct ssl_async_args args;
1536 args.type = READFUNC;
1537 args.f.func_read = s->method->ssl_read;
1539 return ssl_start_async_job(s, &args, ssl_io_intern);
1541 return s->method->ssl_read(s, buf, num);
1545 int SSL_peek(SSL *s, void *buf, int num)
1547 if (s->handshake_func == NULL) {
1548 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1552 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1555 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1556 struct ssl_async_args args;
1561 args.type = READFUNC;
1562 args.f.func_read = s->method->ssl_peek;
1564 return ssl_start_async_job(s, &args, ssl_io_intern);
1566 return s->method->ssl_peek(s, buf, num);
1570 int SSL_write(SSL *s, const void *buf, int num)
1572 if (s->handshake_func == NULL) {
1573 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1577 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1578 s->rwstate = SSL_NOTHING;
1579 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1583 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1584 struct ssl_async_args args;
1587 args.buf = (void *)buf;
1589 args.type = WRITEFUNC;
1590 args.f.func_write = s->method->ssl_write;
1592 return ssl_start_async_job(s, &args, ssl_io_intern);
1594 return s->method->ssl_write(s, buf, num);
1598 int SSL_shutdown(SSL *s)
1601 * Note that this function behaves differently from what one might
1602 * expect. Return values are 0 for no success (yet), 1 for success; but
1603 * calling it once is usually not enough, even if blocking I/O is used
1604 * (see ssl3_shutdown).
1607 if (s->handshake_func == NULL) {
1608 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1612 if (!SSL_in_init(s)) {
1613 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1614 struct ssl_async_args args;
1617 args.type = OTHERFUNC;
1618 args.f.func_other = s->method->ssl_shutdown;
1620 return ssl_start_async_job(s, &args, ssl_io_intern);
1622 return s->method->ssl_shutdown(s);
1625 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1630 int SSL_renegotiate(SSL *s)
1632 if (s->renegotiate == 0)
1637 return (s->method->ssl_renegotiate(s));
1640 int SSL_renegotiate_abbreviated(SSL *s)
1642 if (s->renegotiate == 0)
1647 return (s->method->ssl_renegotiate(s));
1650 int SSL_renegotiate_pending(SSL *s)
1653 * becomes true when negotiation is requested; false again once a
1654 * handshake has finished
1656 return (s->renegotiate != 0);
1659 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1664 case SSL_CTRL_GET_READ_AHEAD:
1665 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1666 case SSL_CTRL_SET_READ_AHEAD:
1667 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1668 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1671 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1672 s->msg_callback_arg = parg;
1676 return (s->mode |= larg);
1677 case SSL_CTRL_CLEAR_MODE:
1678 return (s->mode &= ~larg);
1679 case SSL_CTRL_GET_MAX_CERT_LIST:
1680 return (s->max_cert_list);
1681 case SSL_CTRL_SET_MAX_CERT_LIST:
1682 l = s->max_cert_list;
1683 s->max_cert_list = larg;
1685 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1686 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1688 s->max_send_fragment = larg;
1689 if (s->max_send_fragment < s->split_send_fragment)
1690 s->split_send_fragment = s->max_send_fragment;
1692 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1693 if (larg > s->max_send_fragment || larg == 0)
1695 s->split_send_fragment = larg;
1697 case SSL_CTRL_SET_MAX_PIPELINES:
1698 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1700 s->max_pipelines = larg;
1702 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
1703 case SSL_CTRL_GET_RI_SUPPORT:
1705 return s->s3->send_connection_binding;
1708 case SSL_CTRL_CERT_FLAGS:
1709 return (s->cert->cert_flags |= larg);
1710 case SSL_CTRL_CLEAR_CERT_FLAGS:
1711 return (s->cert->cert_flags &= ~larg);
1713 case SSL_CTRL_GET_RAW_CIPHERLIST:
1715 if (s->s3->tmp.ciphers_raw == NULL)
1717 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1718 return (int)s->s3->tmp.ciphers_rawlen;
1720 return TLS_CIPHER_LEN;
1722 case SSL_CTRL_GET_EXTMS_SUPPORT:
1723 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1725 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1729 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1730 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1731 &s->min_proto_version);
1732 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1733 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1734 &s->max_proto_version);
1736 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1740 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1743 case SSL_CTRL_SET_MSG_CALLBACK:
1744 s->msg_callback = (void (*)
1745 (int write_p, int version, int content_type,
1746 const void *buf, size_t len, SSL *ssl,
1751 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1755 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1757 return ctx->sessions;
1760 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1763 /* For some cases with ctx == NULL perform syntax checks */
1766 #ifndef OPENSSL_NO_EC
1767 case SSL_CTRL_SET_CURVES_LIST:
1768 return tls1_set_curves_list(NULL, NULL, parg);
1770 case SSL_CTRL_SET_SIGALGS_LIST:
1771 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1772 return tls1_set_sigalgs_list(NULL, parg, 0);
1779 case SSL_CTRL_GET_READ_AHEAD:
1780 return (ctx->read_ahead);
1781 case SSL_CTRL_SET_READ_AHEAD:
1782 l = ctx->read_ahead;
1783 ctx->read_ahead = larg;
1786 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1787 ctx->msg_callback_arg = parg;
1790 case SSL_CTRL_GET_MAX_CERT_LIST:
1791 return (ctx->max_cert_list);
1792 case SSL_CTRL_SET_MAX_CERT_LIST:
1793 l = ctx->max_cert_list;
1794 ctx->max_cert_list = larg;
1797 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1798 l = ctx->session_cache_size;
1799 ctx->session_cache_size = larg;
1801 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1802 return (ctx->session_cache_size);
1803 case SSL_CTRL_SET_SESS_CACHE_MODE:
1804 l = ctx->session_cache_mode;
1805 ctx->session_cache_mode = larg;
1807 case SSL_CTRL_GET_SESS_CACHE_MODE:
1808 return (ctx->session_cache_mode);
1810 case SSL_CTRL_SESS_NUMBER:
1811 return (lh_SSL_SESSION_num_items(ctx->sessions));
1812 case SSL_CTRL_SESS_CONNECT:
1813 return (ctx->stats.sess_connect);
1814 case SSL_CTRL_SESS_CONNECT_GOOD:
1815 return (ctx->stats.sess_connect_good);
1816 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1817 return (ctx->stats.sess_connect_renegotiate);
1818 case SSL_CTRL_SESS_ACCEPT:
1819 return (ctx->stats.sess_accept);
1820 case SSL_CTRL_SESS_ACCEPT_GOOD:
1821 return (ctx->stats.sess_accept_good);
1822 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1823 return (ctx->stats.sess_accept_renegotiate);
1824 case SSL_CTRL_SESS_HIT:
1825 return (ctx->stats.sess_hit);
1826 case SSL_CTRL_SESS_CB_HIT:
1827 return (ctx->stats.sess_cb_hit);
1828 case SSL_CTRL_SESS_MISSES:
1829 return (ctx->stats.sess_miss);
1830 case SSL_CTRL_SESS_TIMEOUTS:
1831 return (ctx->stats.sess_timeout);
1832 case SSL_CTRL_SESS_CACHE_FULL:
1833 return (ctx->stats.sess_cache_full);
1835 return (ctx->mode |= larg);
1836 case SSL_CTRL_CLEAR_MODE:
1837 return (ctx->mode &= ~larg);
1838 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1839 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1841 ctx->max_send_fragment = larg;
1842 if (ctx->max_send_fragment < ctx->split_send_fragment)
1843 ctx->split_send_fragment = ctx->split_send_fragment;
1845 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
1846 if (larg > ctx->max_send_fragment || larg == 0)
1848 ctx->split_send_fragment = larg;
1850 case SSL_CTRL_SET_MAX_PIPELINES:
1851 if (larg < 1 || larg > SSL_MAX_PIPELINES)
1853 ctx->max_pipelines = larg;
1854 case SSL_CTRL_CERT_FLAGS:
1855 return (ctx->cert->cert_flags |= larg);
1856 case SSL_CTRL_CLEAR_CERT_FLAGS:
1857 return (ctx->cert->cert_flags &= ~larg);
1858 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1859 return ssl_set_version_bound(ctx->method->version, (int)larg,
1860 &ctx->min_proto_version);
1861 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1862 return ssl_set_version_bound(ctx->method->version, (int)larg,
1863 &ctx->max_proto_version);
1865 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1869 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1872 case SSL_CTRL_SET_MSG_CALLBACK:
1873 ctx->msg_callback = (void (*)
1874 (int write_p, int version, int content_type,
1875 const void *buf, size_t len, SSL *ssl,
1880 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1884 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1893 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1894 const SSL_CIPHER *const *bp)
1896 if ((*ap)->id > (*bp)->id)
1898 if ((*ap)->id < (*bp)->id)
1903 /** return a STACK of the ciphers available for the SSL and in order of
1905 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1908 if (s->cipher_list != NULL) {
1909 return (s->cipher_list);
1910 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1911 return (s->ctx->cipher_list);
1917 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
1919 if ((s == NULL) || (s->session == NULL) || !s->server)
1921 return s->session->ciphers;
1924 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1926 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1928 ciphers = SSL_get_ciphers(s);
1931 ssl_set_client_disabled(s);
1932 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1933 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1934 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1936 sk = sk_SSL_CIPHER_new_null();
1939 if (!sk_SSL_CIPHER_push(sk, c)) {
1940 sk_SSL_CIPHER_free(sk);
1948 /** return a STACK of the ciphers available for the SSL and in order of
1950 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1953 if (s->cipher_list_by_id != NULL) {
1954 return (s->cipher_list_by_id);
1955 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1956 return (s->ctx->cipher_list_by_id);
1962 /** The old interface to get the same thing as SSL_get_ciphers() */
1963 const char *SSL_get_cipher_list(const SSL *s, int n)
1965 const SSL_CIPHER *c;
1966 STACK_OF(SSL_CIPHER) *sk;
1970 sk = SSL_get_ciphers(s);
1971 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1973 c = sk_SSL_CIPHER_value(sk, n);
1979 /** specify the ciphers to be used by default by the SSL_CTX */
1980 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1982 STACK_OF(SSL_CIPHER) *sk;
1984 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1985 &ctx->cipher_list_by_id, str, ctx->cert);
1987 * ssl_create_cipher_list may return an empty stack if it was unable to
1988 * find a cipher matching the given rule string (for example if the rule
1989 * string specifies a cipher which has been disabled). This is not an
1990 * error as far as ssl_create_cipher_list is concerned, and hence
1991 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1995 else if (sk_SSL_CIPHER_num(sk) == 0) {
1996 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2002 /** specify the ciphers to be used by the SSL */
2003 int SSL_set_cipher_list(SSL *s, const char *str)
2005 STACK_OF(SSL_CIPHER) *sk;
2007 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2008 &s->cipher_list_by_id, str, s->cert);
2009 /* see comment in SSL_CTX_set_cipher_list */
2012 else if (sk_SSL_CIPHER_num(sk) == 0) {
2013 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2019 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2022 STACK_OF(SSL_CIPHER) *sk;
2023 const SSL_CIPHER *c;
2026 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
2030 sk = s->session->ciphers;
2032 if (sk_SSL_CIPHER_num(sk) == 0)
2035 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2038 c = sk_SSL_CIPHER_value(sk, i);
2039 n = strlen(c->name);
2046 memcpy(p, c->name, n + 1);
2055 /** return a servername extension value if provided in Client Hello, or NULL.
2056 * So far, only host_name types are defined (RFC 3546).
2059 const char *SSL_get_servername(const SSL *s, const int type)
2061 if (type != TLSEXT_NAMETYPE_host_name)
2064 return s->session && !s->tlsext_hostname ?
2065 s->session->tlsext_hostname : s->tlsext_hostname;
2068 int SSL_get_servername_type(const SSL *s)
2071 && (!s->tlsext_hostname ? s->session->
2072 tlsext_hostname : s->tlsext_hostname))
2073 return TLSEXT_NAMETYPE_host_name;
2078 * SSL_select_next_proto implements the standard protocol selection. It is
2079 * expected that this function is called from the callback set by
2080 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2081 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2082 * not included in the length. A byte string of length 0 is invalid. No byte
2083 * string may be truncated. The current, but experimental algorithm for
2084 * selecting the protocol is: 1) If the server doesn't support NPN then this
2085 * is indicated to the callback. In this case, the client application has to
2086 * abort the connection or have a default application level protocol. 2) If
2087 * the server supports NPN, but advertises an empty list then the client
2088 * selects the first protcol in its list, but indicates via the API that this
2089 * fallback case was enacted. 3) Otherwise, the client finds the first
2090 * protocol in the server's list that it supports and selects this protocol.
2091 * This is because it's assumed that the server has better information about
2092 * which protocol a client should use. 4) If the client doesn't support any
2093 * of the server's advertised protocols, then this is treated the same as
2094 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2095 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2097 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2098 const unsigned char *server,
2099 unsigned int server_len,
2100 const unsigned char *client,
2101 unsigned int client_len)
2104 const unsigned char *result;
2105 int status = OPENSSL_NPN_UNSUPPORTED;
2108 * For each protocol in server preference order, see if we support it.
2110 for (i = 0; i < server_len;) {
2111 for (j = 0; j < client_len;) {
2112 if (server[i] == client[j] &&
2113 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2114 /* We found a match */
2115 result = &server[i];
2116 status = OPENSSL_NPN_NEGOTIATED;
2126 /* There's no overlap between our protocols and the server's list. */
2128 status = OPENSSL_NPN_NO_OVERLAP;
2131 *out = (unsigned char *)result + 1;
2132 *outlen = result[0];
2136 #ifndef OPENSSL_NO_NEXTPROTONEG
2138 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2139 * client's requested protocol for this connection and returns 0. If the
2140 * client didn't request any protocol, then *data is set to NULL. Note that
2141 * the client can request any protocol it chooses. The value returned from
2142 * this function need not be a member of the list of supported protocols
2143 * provided by the callback.
2145 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2148 *data = s->next_proto_negotiated;
2152 *len = s->next_proto_negotiated_len;
2157 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
2158 * a TLS server needs a list of supported protocols for Next Protocol
2159 * Negotiation. The returned list must be in wire format. The list is
2160 * returned by setting |out| to point to it and |outlen| to its length. This
2161 * memory will not be modified, but one should assume that the SSL* keeps a
2162 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2163 * wishes to advertise. Otherwise, no such extension will be included in the
2166 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
2167 int (*cb) (SSL *ssl,
2170 unsigned int *outlen,
2171 void *arg), void *arg)
2173 ctx->next_protos_advertised_cb = cb;
2174 ctx->next_protos_advertised_cb_arg = arg;
2178 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2179 * client needs to select a protocol from the server's provided list. |out|
2180 * must be set to point to the selected protocol (which may be within |in|).
2181 * The length of the protocol name must be written into |outlen|. The
2182 * server's advertised protocols are provided in |in| and |inlen|. The
2183 * callback can assume that |in| is syntactically valid. The client must
2184 * select a protocol. It is fatal to the connection if this callback returns
2185 * a value other than SSL_TLSEXT_ERR_OK.
2187 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
2188 int (*cb) (SSL *s, unsigned char **out,
2189 unsigned char *outlen,
2190 const unsigned char *in,
2192 void *arg), void *arg)
2194 ctx->next_proto_select_cb = cb;
2195 ctx->next_proto_select_cb_arg = arg;
2200 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2201 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2202 * length-prefixed strings). Returns 0 on success.
2204 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2205 unsigned protos_len)
2207 OPENSSL_free(ctx->alpn_client_proto_list);
2208 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
2209 if (ctx->alpn_client_proto_list == NULL) {
2210 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2213 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
2214 ctx->alpn_client_proto_list_len = protos_len;
2220 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2221 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2222 * length-prefixed strings). Returns 0 on success.
2224 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2225 unsigned protos_len)
2227 OPENSSL_free(ssl->alpn_client_proto_list);
2228 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
2229 if (ssl->alpn_client_proto_list == NULL) {
2230 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2233 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
2234 ssl->alpn_client_proto_list_len = protos_len;
2240 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2241 * called during ClientHello processing in order to select an ALPN protocol
2242 * from the client's list of offered protocols.
2244 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2245 int (*cb) (SSL *ssl,
2246 const unsigned char **out,
2247 unsigned char *outlen,
2248 const unsigned char *in,
2250 void *arg), void *arg)
2252 ctx->alpn_select_cb = cb;
2253 ctx->alpn_select_cb_arg = arg;
2257 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2258 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2259 * (not including the leading length-prefix byte). If the server didn't
2260 * respond with a negotiated protocol then |*len| will be zero.
2262 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2267 *data = ssl->s3->alpn_selected;
2271 *len = ssl->s3->alpn_selected_len;
2275 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2276 const char *label, size_t llen,
2277 const unsigned char *p, size_t plen,
2280 if (s->version < TLS1_VERSION)
2283 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2288 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2293 ((unsigned int)a->session_id[0]) |
2294 ((unsigned int)a->session_id[1] << 8L) |
2295 ((unsigned long)a->session_id[2] << 16L) |
2296 ((unsigned long)a->session_id[3] << 24L);
2301 * NB: If this function (or indeed the hash function which uses a sort of
2302 * coarser function than this one) is changed, ensure
2303 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2304 * being able to construct an SSL_SESSION that will collide with any existing
2305 * session with a matching session ID.
2307 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2309 if (a->ssl_version != b->ssl_version)
2311 if (a->session_id_length != b->session_id_length)
2313 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2317 * These wrapper functions should remain rather than redeclaring
2318 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2319 * variable. The reason is that the functions aren't static, they're exposed
2323 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2325 SSL_CTX *ret = NULL;
2328 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2332 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2335 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
2336 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE);
2340 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2341 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2344 ret = OPENSSL_zalloc(sizeof(*ret));
2349 ret->min_proto_version = 0;
2350 ret->max_proto_version = 0;
2351 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2352 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2353 /* We take the system default. */
2354 ret->session_timeout = meth->get_timeout();
2355 ret->references = 1;
2356 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2357 ret->verify_mode = SSL_VERIFY_NONE;
2358 if ((ret->cert = ssl_cert_new()) == NULL)
2361 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2362 if (ret->sessions == NULL)
2364 ret->cert_store = X509_STORE_new();
2365 if (ret->cert_store == NULL)
2367 #ifndef OPENSSL_NO_CT
2368 ret->ctlog_store = CTLOG_STORE_new();
2369 if (ret->ctlog_store == NULL)
2372 if (!ssl_create_cipher_list(ret->method,
2373 &ret->cipher_list, &ret->cipher_list_by_id,
2374 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2375 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2376 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2380 ret->param = X509_VERIFY_PARAM_new();
2381 if (ret->param == NULL)
2384 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2385 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2388 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2389 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2393 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
2396 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
2398 /* No compression for DTLS */
2399 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2400 ret->comp_methods = SSL_COMP_get_compression_methods();
2402 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2403 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2405 /* Setup RFC4507 ticket keys */
2406 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
2407 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
2408 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
2409 ret->options |= SSL_OP_NO_TICKET;
2411 #ifndef OPENSSL_NO_SRP
2412 if (!SSL_CTX_SRP_CTX_init(ret))
2415 #ifndef OPENSSL_NO_ENGINE
2416 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2417 # define eng_strx(x) #x
2418 # define eng_str(x) eng_strx(x)
2419 /* Use specific client engine automatically... ignore errors */
2422 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2425 ENGINE_load_builtin_engines();
2426 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2428 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2434 * Default is to connect to non-RI servers. When RI is more widely
2435 * deployed might change this.
2437 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2439 * Disable compression by default to prevent CRIME. Applications can
2440 * re-enable compression by configuring
2441 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2442 * or by using the SSL_CONF library.
2444 ret->options |= SSL_OP_NO_COMPRESSION;
2448 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2454 void SSL_CTX_up_ref(SSL_CTX *ctx)
2456 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
2459 void SSL_CTX_free(SSL_CTX *a)
2466 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2467 REF_PRINT_COUNT("SSL_CTX", a);
2470 REF_ASSERT_ISNT(i < 0);
2472 X509_VERIFY_PARAM_free(a->param);
2473 dane_ctx_final(&a->dane);
2476 * Free internal session cache. However: the remove_cb() may reference
2477 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2478 * after the sessions were flushed.
2479 * As the ex_data handling routines might also touch the session cache,
2480 * the most secure solution seems to be: empty (flush) the cache, then
2481 * free ex_data, then finally free the cache.
2482 * (See ticket [openssl.org #212].)
2484 if (a->sessions != NULL)
2485 SSL_CTX_flush_sessions(a, 0);
2487 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2488 lh_SSL_SESSION_free(a->sessions);
2489 X509_STORE_free(a->cert_store);
2490 #ifndef OPENSSL_NO_CT
2491 CTLOG_STORE_free(a->ctlog_store);
2493 sk_SSL_CIPHER_free(a->cipher_list);
2494 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2495 ssl_cert_free(a->cert);
2496 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2497 sk_X509_pop_free(a->extra_certs, X509_free);
2498 a->comp_methods = NULL;
2499 #ifndef OPENSSL_NO_SRTP
2500 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2502 #ifndef OPENSSL_NO_SRP
2503 SSL_CTX_SRP_CTX_free(a);
2505 #ifndef OPENSSL_NO_ENGINE
2506 ENGINE_finish(a->client_cert_engine);
2509 #ifndef OPENSSL_NO_EC
2510 OPENSSL_free(a->tlsext_ecpointformatlist);
2511 OPENSSL_free(a->tlsext_ellipticcurvelist);
2513 OPENSSL_free(a->alpn_client_proto_list);
2518 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2520 ctx->default_passwd_callback = cb;
2523 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2525 ctx->default_passwd_callback_userdata = u;
2528 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2530 return ctx->default_passwd_callback;
2533 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2535 return ctx->default_passwd_callback_userdata;
2538 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2540 s->default_passwd_callback = cb;
2543 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2545 s->default_passwd_callback_userdata = u;
2548 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
2550 return s->default_passwd_callback;
2553 void *SSL_get_default_passwd_cb_userdata(SSL *s)
2555 return s->default_passwd_callback_userdata;
2558 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2559 int (*cb) (X509_STORE_CTX *, void *),
2562 ctx->app_verify_callback = cb;
2563 ctx->app_verify_arg = arg;
2566 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2567 int (*cb) (int, X509_STORE_CTX *))
2569 ctx->verify_mode = mode;
2570 ctx->default_verify_callback = cb;
2573 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2575 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2578 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2581 ssl_cert_set_cert_cb(c->cert, cb, arg);
2584 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2586 ssl_cert_set_cert_cb(s->cert, cb, arg);
2589 void ssl_set_masks(SSL *s)
2591 #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST)
2595 uint32_t *pvalid = s->s3->tmp.valid_flags;
2596 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
2597 unsigned long mask_k, mask_a;
2598 #ifndef OPENSSL_NO_EC
2599 int have_ecc_cert, ecdsa_ok;
2605 #ifndef OPENSSL_NO_DH
2606 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2611 rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
2612 rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
2613 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
2614 #ifndef OPENSSL_NO_EC
2615 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2621 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
2622 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
2625 #ifndef OPENSSL_NO_GOST
2626 cpk = &(c->pkeys[SSL_PKEY_GOST12_512]);
2627 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2628 mask_k |= SSL_kGOST;
2629 mask_a |= SSL_aGOST12;
2631 cpk = &(c->pkeys[SSL_PKEY_GOST12_256]);
2632 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2633 mask_k |= SSL_kGOST;
2634 mask_a |= SSL_aGOST12;
2636 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2637 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2638 mask_k |= SSL_kGOST;
2639 mask_a |= SSL_aGOST01;
2649 if (rsa_enc || rsa_sign) {
2657 mask_a |= SSL_aNULL;
2660 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2661 * depending on the key usage extension.
2663 #ifndef OPENSSL_NO_EC
2664 if (have_ecc_cert) {
2666 cpk = &c->pkeys[SSL_PKEY_ECC];
2668 ex_kusage = X509_get_key_usage(x);
2669 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2670 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2673 mask_a |= SSL_aECDSA;
2677 #ifndef OPENSSL_NO_EC
2678 mask_k |= SSL_kECDHE;
2681 #ifndef OPENSSL_NO_PSK
2684 if (mask_k & SSL_kRSA)
2685 mask_k |= SSL_kRSAPSK;
2686 if (mask_k & SSL_kDHE)
2687 mask_k |= SSL_kDHEPSK;
2688 if (mask_k & SSL_kECDHE)
2689 mask_k |= SSL_kECDHEPSK;
2692 s->s3->tmp.mask_k = mask_k;
2693 s->s3->tmp.mask_a = mask_a;
2696 #ifndef OPENSSL_NO_EC
2698 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2700 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
2701 /* key usage, if present, must allow signing */
2702 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
2703 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2704 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2708 return 1; /* all checks are ok */
2713 static int ssl_get_server_cert_index(const SSL *s)
2716 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2717 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2718 idx = SSL_PKEY_RSA_SIGN;
2719 if (idx == SSL_PKEY_GOST_EC) {
2720 if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)
2721 idx = SSL_PKEY_GOST12_512;
2722 else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509)
2723 idx = SSL_PKEY_GOST12_256;
2724 else if (s->cert->pkeys[SSL_PKEY_GOST01].x509)
2725 idx = SSL_PKEY_GOST01;
2730 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2734 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2740 if (!s->s3 || !s->s3->tmp.new_cipher)
2744 i = ssl_get_server_cert_index(s);
2746 /* This may or may not be an error. */
2751 return &c->pkeys[i];
2754 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2757 unsigned long alg_a;
2761 alg_a = cipher->algorithm_auth;
2764 if ((alg_a & SSL_aDSS) &&
2765 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2766 idx = SSL_PKEY_DSA_SIGN;
2767 else if (alg_a & SSL_aRSA) {
2768 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2769 idx = SSL_PKEY_RSA_SIGN;
2770 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2771 idx = SSL_PKEY_RSA_ENC;
2772 } else if ((alg_a & SSL_aECDSA) &&
2773 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2776 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2780 *pmd = s->s3->tmp.md[idx];
2781 return c->pkeys[idx].privatekey;
2784 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2785 size_t *serverinfo_length)
2789 *serverinfo_length = 0;
2792 i = ssl_get_server_cert_index(s);
2796 if (c->pkeys[i].serverinfo == NULL)
2799 *serverinfo = c->pkeys[i].serverinfo;
2800 *serverinfo_length = c->pkeys[i].serverinfo_length;
2804 void ssl_update_cache(SSL *s, int mode)
2809 * If the session_id_length is 0, we are not supposed to cache it, and it
2810 * would be rather hard to do anyway :-)
2812 if (s->session->session_id_length == 0)
2815 i = s->session_ctx->session_cache_mode;
2816 if ((i & mode) && (!s->hit)
2817 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2818 || SSL_CTX_add_session(s->session_ctx, s->session))
2819 && (s->session_ctx->new_session_cb != NULL)) {
2820 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2821 if (!s->session_ctx->new_session_cb(s, s->session))
2822 SSL_SESSION_free(s->session);
2825 /* auto flush every 255 connections */
2826 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2827 if ((((mode & SSL_SESS_CACHE_CLIENT)
2828 ? s->session_ctx->stats.sess_connect_good
2829 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2830 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2835 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2840 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2845 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2849 if (s->method != meth) {
2850 const SSL_METHOD *sm = s->method;
2851 int (*hf)(SSL *) = s->handshake_func;
2853 if (sm->version == meth->version)
2858 ret = s->method->ssl_new(s);
2861 if (hf == sm->ssl_connect)
2862 s->handshake_func = meth->ssl_connect;
2863 else if (hf == sm->ssl_accept)
2864 s->handshake_func = meth->ssl_accept;
2869 int SSL_get_error(const SSL *s, int i)
2876 return (SSL_ERROR_NONE);
2879 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2880 * where we do encode the error
2882 if ((l = ERR_peek_error()) != 0) {
2883 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2884 return (SSL_ERROR_SYSCALL);
2886 return (SSL_ERROR_SSL);
2889 if ((i < 0) && SSL_want_read(s)) {
2890 bio = SSL_get_rbio(s);
2891 if (BIO_should_read(bio))
2892 return (SSL_ERROR_WANT_READ);
2893 else if (BIO_should_write(bio))
2895 * This one doesn't make too much sense ... We never try to write
2896 * to the rbio, and an application program where rbio and wbio
2897 * are separate couldn't even know what it should wait for.
2898 * However if we ever set s->rwstate incorrectly (so that we have
2899 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2900 * wbio *are* the same, this test works around that bug; so it
2901 * might be safer to keep it.
2903 return (SSL_ERROR_WANT_WRITE);
2904 else if (BIO_should_io_special(bio)) {
2905 reason = BIO_get_retry_reason(bio);
2906 if (reason == BIO_RR_CONNECT)
2907 return (SSL_ERROR_WANT_CONNECT);
2908 else if (reason == BIO_RR_ACCEPT)
2909 return (SSL_ERROR_WANT_ACCEPT);
2911 return (SSL_ERROR_SYSCALL); /* unknown */
2915 if ((i < 0) && SSL_want_write(s)) {
2916 bio = SSL_get_wbio(s);
2917 if (BIO_should_write(bio))
2918 return (SSL_ERROR_WANT_WRITE);
2919 else if (BIO_should_read(bio))
2921 * See above (SSL_want_read(s) with BIO_should_write(bio))
2923 return (SSL_ERROR_WANT_READ);
2924 else if (BIO_should_io_special(bio)) {
2925 reason = BIO_get_retry_reason(bio);
2926 if (reason == BIO_RR_CONNECT)
2927 return (SSL_ERROR_WANT_CONNECT);
2928 else if (reason == BIO_RR_ACCEPT)
2929 return (SSL_ERROR_WANT_ACCEPT);
2931 return (SSL_ERROR_SYSCALL);
2934 if ((i < 0) && SSL_want_x509_lookup(s)) {
2935 return (SSL_ERROR_WANT_X509_LOOKUP);
2937 if ((i < 0) && SSL_want_async(s)) {
2938 return SSL_ERROR_WANT_ASYNC;
2942 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2943 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2944 return (SSL_ERROR_ZERO_RETURN);
2946 return (SSL_ERROR_SYSCALL);
2949 static int ssl_do_handshake_intern(void *vargs)
2951 struct ssl_async_args *args;
2954 args = (struct ssl_async_args *)vargs;
2957 return s->handshake_func(s);
2960 int SSL_do_handshake(SSL *s)
2964 if (s->handshake_func == NULL) {
2965 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2969 s->method->ssl_renegotiate_check(s);
2971 if (SSL_in_init(s) || SSL_in_before(s)) {
2972 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2973 struct ssl_async_args args;
2977 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
2979 ret = s->handshake_func(s);
2985 void SSL_set_accept_state(SSL *s)
2989 ossl_statem_clear(s);
2990 s->handshake_func = s->method->ssl_accept;
2994 void SSL_set_connect_state(SSL *s)
2998 ossl_statem_clear(s);
2999 s->handshake_func = s->method->ssl_connect;
3003 int ssl_undefined_function(SSL *s)
3005 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3009 int ssl_undefined_void_function(void)
3011 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3012 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3016 int ssl_undefined_const_function(const SSL *s)
3021 SSL_METHOD *ssl_bad_method(int ver)
3023 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3027 const char *SSL_get_version(const SSL *s)
3029 if (s->version == TLS1_2_VERSION)
3031 else if (s->version == TLS1_1_VERSION)
3033 else if (s->version == TLS1_VERSION)
3035 else if (s->version == SSL3_VERSION)
3037 else if (s->version == DTLS1_BAD_VER)
3038 return ("DTLSv0.9");
3039 else if (s->version == DTLS1_VERSION)
3041 else if (s->version == DTLS1_2_VERSION)
3042 return ("DTLSv1.2");
3047 SSL *SSL_dup(SSL *s)
3049 STACK_OF(X509_NAME) *sk;
3054 /* If we're not quiescent, just up_ref! */
3055 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3056 CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL);
3061 * Otherwise, copy configuration state, and session if set.
3063 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3066 if (s->session != NULL) {
3068 * Arranges to share the same session via up_ref. This "copies"
3069 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3071 if (!SSL_copy_session_id(ret, s))
3075 * No session has been established yet, so we have to expect that
3076 * s->cert or ret->cert will be changed later -- they should not both
3077 * point to the same object, and thus we can't use
3078 * SSL_copy_session_id.
3080 if (!SSL_set_ssl_method(ret, s->method))
3083 if (s->cert != NULL) {
3084 ssl_cert_free(ret->cert);
3085 ret->cert = ssl_cert_dup(s->cert);
3086 if (ret->cert == NULL)
3090 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
3094 ssl_dane_dup(ret, s);
3095 ret->version = s->version;
3096 ret->options = s->options;
3097 ret->mode = s->mode;
3098 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3099 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3100 ret->msg_callback = s->msg_callback;
3101 ret->msg_callback_arg = s->msg_callback_arg;
3102 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3103 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3104 ret->generate_session_id = s->generate_session_id;
3106 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3108 /* copy app data, a little dangerous perhaps */
3109 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3112 /* setup rbio, and wbio */
3113 if (s->rbio != NULL) {
3114 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3117 if (s->wbio != NULL) {
3118 if (s->wbio != s->rbio) {
3119 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3122 ret->wbio = ret->rbio;
3125 ret->server = s->server;
3126 if (s->handshake_func) {
3128 SSL_set_accept_state(ret);
3130 SSL_set_connect_state(ret);
3132 ret->shutdown = s->shutdown;
3135 ret->default_passwd_callback = s->default_passwd_callback;
3136 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3138 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3140 /* dup the cipher_list and cipher_list_by_id stacks */
3141 if (s->cipher_list != NULL) {
3142 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3145 if (s->cipher_list_by_id != NULL)
3146 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3150 /* Dup the client_CA list */
3151 if (s->client_CA != NULL) {
3152 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
3154 ret->client_CA = sk;
3155 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3156 xn = sk_X509_NAME_value(sk, i);
3157 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3170 void ssl_clear_cipher_ctx(SSL *s)
3172 if (s->enc_read_ctx != NULL) {
3173 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3174 s->enc_read_ctx = NULL;
3176 if (s->enc_write_ctx != NULL) {
3177 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3178 s->enc_write_ctx = NULL;
3180 #ifndef OPENSSL_NO_COMP
3181 COMP_CTX_free(s->expand);
3183 COMP_CTX_free(s->compress);
3188 X509 *SSL_get_certificate(const SSL *s)
3190 if (s->cert != NULL)
3191 return (s->cert->key->x509);
3196 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3198 if (s->cert != NULL)
3199 return (s->cert->key->privatekey);
3204 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3206 if (ctx->cert != NULL)
3207 return ctx->cert->key->x509;
3212 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3214 if (ctx->cert != NULL)
3215 return ctx->cert->key->privatekey;
3220 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3222 if ((s->session != NULL) && (s->session->cipher != NULL))
3223 return (s->session->cipher);
3227 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3229 #ifndef OPENSSL_NO_COMP
3230 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3236 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3238 #ifndef OPENSSL_NO_COMP
3239 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3245 int ssl_init_wbio_buffer(SSL *s, int push)
3249 if (s->bbio == NULL) {
3250 bbio = BIO_new(BIO_f_buffer());
3256 if (s->bbio == s->wbio)
3257 s->wbio = BIO_pop(s->wbio);
3259 (void)BIO_reset(bbio);
3260 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3261 if (!BIO_set_read_buffer_size(bbio, 1)) {
3262 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3266 if (s->wbio != bbio)
3267 s->wbio = BIO_push(bbio, s->wbio);
3269 if (s->wbio == bbio)
3270 s->wbio = BIO_pop(bbio);
3275 void ssl_free_wbio_buffer(SSL *s)
3277 /* callers ensure s is never null */
3278 if (s->bbio == NULL)
3281 if (s->bbio == s->wbio) {
3282 /* remove buffering */
3283 s->wbio = BIO_pop(s->wbio);
3286 * not the usual REF_DEBUG, but this avoids
3287 * adding one more preprocessor symbol
3289 assert(s->wbio != NULL);
3296 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3298 ctx->quiet_shutdown = mode;
3301 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3303 return (ctx->quiet_shutdown);
3306 void SSL_set_quiet_shutdown(SSL *s, int mode)
3308 s->quiet_shutdown = mode;
3311 int SSL_get_quiet_shutdown(const SSL *s)
3313 return (s->quiet_shutdown);
3316 void SSL_set_shutdown(SSL *s, int mode)
3321 int SSL_get_shutdown(const SSL *s)
3323 return (s->shutdown);
3326 int SSL_version(const SSL *s)
3328 return (s->version);
3331 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3336 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3339 if (ssl->ctx == ctx)
3342 ctx = ssl->initial_ctx;
3343 new_cert = ssl_cert_dup(ctx->cert);
3344 if (new_cert == NULL) {
3347 ssl_cert_free(ssl->cert);
3348 ssl->cert = new_cert;
3351 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3352 * so setter APIs must prevent invalid lengths from entering the system.
3354 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3357 * If the session ID context matches that of the parent SSL_CTX,
3358 * inherit it from the new SSL_CTX as well. If however the context does
3359 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3360 * leave it unchanged.
3362 if ((ssl->ctx != NULL) &&
3363 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3364 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3365 ssl->sid_ctx_length = ctx->sid_ctx_length;
3366 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3369 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3370 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3376 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3378 return (X509_STORE_set_default_paths(ctx->cert_store));
3381 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3383 X509_LOOKUP *lookup;
3385 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3388 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3390 /* Clear any errors if the default directory does not exist */
3396 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3398 X509_LOOKUP *lookup;
3400 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3404 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3406 /* Clear any errors if the default file does not exist */
3412 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3415 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3418 void SSL_set_info_callback(SSL *ssl,
3419 void (*cb) (const SSL *ssl, int type, int val))
3421 ssl->info_callback = cb;
3425 * One compiler (Diab DCC) doesn't like argument names in returned function
3428 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3431 return ssl->info_callback;
3434 void SSL_set_verify_result(SSL *ssl, long arg)
3436 ssl->verify_result = arg;
3439 long SSL_get_verify_result(const SSL *ssl)
3441 return (ssl->verify_result);
3444 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3447 return sizeof(ssl->s3->client_random);
3448 if (outlen > sizeof(ssl->s3->client_random))
3449 outlen = sizeof(ssl->s3->client_random);
3450 memcpy(out, ssl->s3->client_random, outlen);
3454 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3457 return sizeof(ssl->s3->server_random);
3458 if (outlen > sizeof(ssl->s3->server_random))
3459 outlen = sizeof(ssl->s3->server_random);
3460 memcpy(out, ssl->s3->server_random, outlen);
3464 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3465 unsigned char *out, size_t outlen)
3467 if (session->master_key_length < 0) {
3468 /* Should never happen */
3472 return session->master_key_length;
3473 if (outlen > (size_t)session->master_key_length)
3474 outlen = session->master_key_length;
3475 memcpy(out, session->master_key, outlen);
3479 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3481 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3484 void *SSL_get_ex_data(const SSL *s, int idx)
3486 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3489 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3491 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3494 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3496 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3504 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3506 return (ctx->cert_store);
3509 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3511 X509_STORE_free(ctx->cert_store);
3512 ctx->cert_store = store;
3515 int SSL_want(const SSL *s)
3517 return (s->rwstate);
3521 * \brief Set the callback for generating temporary DH keys.
3522 * \param ctx the SSL context.
3523 * \param dh the callback
3526 #ifndef OPENSSL_NO_DH
3527 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3528 DH *(*dh) (SSL *ssl, int is_export,
3531 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3534 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3537 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3541 #ifndef OPENSSL_NO_PSK
3542 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3544 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3545 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3546 SSL_R_DATA_LENGTH_TOO_LONG);
3549 OPENSSL_free(ctx->cert->psk_identity_hint);
3550 if (identity_hint != NULL) {
3551 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3552 if (ctx->cert->psk_identity_hint == NULL)
3555 ctx->cert->psk_identity_hint = NULL;
3559 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3564 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3565 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3568 OPENSSL_free(s->cert->psk_identity_hint);
3569 if (identity_hint != NULL) {
3570 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3571 if (s->cert->psk_identity_hint == NULL)
3574 s->cert->psk_identity_hint = NULL;
3578 const char *SSL_get_psk_identity_hint(const SSL *s)
3580 if (s == NULL || s->session == NULL)
3582 return (s->session->psk_identity_hint);
3585 const char *SSL_get_psk_identity(const SSL *s)
3587 if (s == NULL || s->session == NULL)
3589 return (s->session->psk_identity);
3592 void SSL_set_psk_client_callback(SSL *s,
3593 unsigned int (*cb) (SSL *ssl,
3602 s->psk_client_callback = cb;
3605 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3606 unsigned int (*cb) (SSL *ssl,
3615 ctx->psk_client_callback = cb;
3618 void SSL_set_psk_server_callback(SSL *s,
3619 unsigned int (*cb) (SSL *ssl,
3620 const char *identity,
3625 s->psk_server_callback = cb;
3628 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3629 unsigned int (*cb) (SSL *ssl,
3630 const char *identity,
3635 ctx->psk_server_callback = cb;
3639 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3640 void (*cb) (int write_p, int version,
3641 int content_type, const void *buf,
3642 size_t len, SSL *ssl, void *arg))
3644 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3647 void SSL_set_msg_callback(SSL *ssl,
3648 void (*cb) (int write_p, int version,
3649 int content_type, const void *buf,
3650 size_t len, SSL *ssl, void *arg))
3652 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3655 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3656 int (*cb) (SSL *ssl,
3660 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3661 (void (*)(void))cb);
3664 void SSL_set_not_resumable_session_callback(SSL *ssl,
3665 int (*cb) (SSL *ssl,
3666 int is_forward_secure))
3668 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3669 (void (*)(void))cb);
3673 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3674 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3675 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3679 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3681 ssl_clear_hash_ctx(hash);
3682 *hash = EVP_MD_CTX_new();
3683 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3684 EVP_MD_CTX_free(*hash);
3691 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3695 EVP_MD_CTX_free(*hash);
3699 /* Retrieve handshake hashes */
3700 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3702 EVP_MD_CTX *ctx = NULL;
3703 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
3704 int ret = EVP_MD_CTX_size(hdgst);
3705 if (ret < 0 || ret > outlen) {
3709 ctx = EVP_MD_CTX_new();
3714 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
3715 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
3718 EVP_MD_CTX_free(ctx);
3722 int SSL_session_reused(SSL *s)
3727 int SSL_is_server(SSL *s)
3732 #if OPENSSL_API_COMPAT < 0x10100000L
3733 void SSL_set_debug(SSL *s, int debug)
3735 /* Old function was do-nothing anyway... */
3742 void SSL_set_security_level(SSL *s, int level)
3744 s->cert->sec_level = level;
3747 int SSL_get_security_level(const SSL *s)
3749 return s->cert->sec_level;
3752 void SSL_set_security_callback(SSL *s,
3753 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3754 int bits, int nid, void *other,
3757 s->cert->sec_cb = cb;
3760 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3762 void *other, void *ex) {
3763 return s->cert->sec_cb;
3766 void SSL_set0_security_ex_data(SSL *s, void *ex)
3768 s->cert->sec_ex = ex;
3771 void *SSL_get0_security_ex_data(const SSL *s)
3773 return s->cert->sec_ex;
3776 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3778 ctx->cert->sec_level = level;
3781 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3783 return ctx->cert->sec_level;
3786 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3787 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3788 int bits, int nid, void *other,
3791 ctx->cert->sec_cb = cb;
3794 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3800 return ctx->cert->sec_cb;
3803 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3805 ctx->cert->sec_ex = ex;
3808 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3810 return ctx->cert->sec_ex;
3815 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3816 * can return unsigned long, instead of the generic long return value from the
3817 * control interface.
3819 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
3821 return ctx->options;
3823 unsigned long SSL_get_options(const SSL* s)
3827 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
3829 return ctx->options |= op;
3831 unsigned long SSL_set_options(SSL *s, unsigned long op)
3833 return s->options |= op;
3835 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
3837 return ctx->options &= ~op;
3839 unsigned long SSL_clear_options(SSL *s, unsigned long op)
3841 return s->options &= ~op;
3844 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
3846 return s->verified_chain;
3849 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
3851 #ifndef OPENSSL_NO_CT
3854 * Moves SCTs from the |src| stack to the |dst| stack.
3855 * The source of each SCT will be set to |origin|.
3856 * If |dst| points to a NULL pointer, a new stack will be created and owned by
3858 * Returns the number of SCTs moved, or a negative integer if an error occurs.
3860 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src, sct_source_t origin)
3866 *dst = sk_SCT_new_null();
3868 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
3873 while ((sct = sk_SCT_pop(src)) != NULL) {
3874 if (SCT_set_source(sct, origin) != 1)
3877 if (sk_SCT_push(*dst, sct) <= 0)
3885 sk_SCT_push(src, sct); /* Put the SCT back */
3890 * Look for data collected during ServerHello and parse if found.
3891 * Return 1 on success, 0 on failure.
3893 static int ct_extract_tls_extension_scts(SSL *s)
3895 int scts_extracted = 0;
3897 if (s->tlsext_scts != NULL) {
3898 const unsigned char *p = s->tlsext_scts;
3899 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->tlsext_scts_len);
3901 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
3903 SCT_LIST_free(scts);
3906 return scts_extracted;
3910 * Checks for an OCSP response and then attempts to extract any SCTs found if it
3911 * contains an SCT X509 extension. They will be stored in |s->scts|.
3913 * - The number of SCTs extracted, assuming an OCSP response exists.
3914 * - 0 if no OCSP response exists or it contains no SCTs.
3915 * - A negative integer if an error occurs.
3917 static int ct_extract_ocsp_response_scts(SSL *s)
3919 int scts_extracted = 0;
3920 const unsigned char *p;
3921 OCSP_BASICRESP *br = NULL;
3922 OCSP_RESPONSE *rsp = NULL;
3923 STACK_OF(SCT) *scts = NULL;
3926 if (s->tlsext_ocsp_resp == NULL || s->tlsext_ocsp_resplen == 0)
3929 p = s->tlsext_ocsp_resp;
3930 rsp = d2i_OCSP_RESPONSE(NULL, &p, s->tlsext_ocsp_resplen);
3934 br = OCSP_response_get1_basic(rsp);
3938 for (i = 0; i < OCSP_resp_count(br); ++i) {
3939 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
3944 scts = OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
3945 scts_extracted = ct_move_scts(&s->scts, scts,
3946 SCT_SOURCE_OCSP_STAPLED_RESPONSE);
3947 if (scts_extracted < 0)
3951 SCT_LIST_free(scts);
3952 OCSP_BASICRESP_free(br);
3953 OCSP_RESPONSE_free(rsp);
3954 return scts_extracted;
3958 * Attempts to extract SCTs from the peer certificate.
3959 * Return the number of SCTs extracted, or a negative integer if an error
3962 static int ct_extract_x509v3_extension_scts(SSL *s)
3964 int scts_extracted = 0;
3965 X509 *cert = s->session != NULL ? s->session->peer : NULL;
3968 STACK_OF(SCT) *scts =
3969 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
3972 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
3974 SCT_LIST_free(scts);
3977 return scts_extracted;
3981 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
3982 * response (if it exists) and X509v3 extensions in the certificate.
3983 * Returns NULL if an error occurs.
3985 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
3987 if (!s->scts_parsed) {
3988 if (ct_extract_tls_extension_scts(s) < 0 ||
3989 ct_extract_ocsp_response_scts(s) < 0 ||
3990 ct_extract_x509v3_extension_scts(s) < 0)
4000 int SSL_set_ct_validation_callback(SSL *s, ct_validation_cb callback, void *arg)
4005 * Since code exists that uses the custom extension handler for CT, look
4006 * for this and throw an error if they have already registered to use CT.
4008 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4009 TLSEXT_TYPE_signed_certificate_timestamp)) {
4010 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4011 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4015 s->ct_validation_callback = callback;
4016 s->ct_validation_callback_arg = arg;
4018 if (callback != NULL) {
4019 /* If we are validating CT, then we MUST accept SCTs served via OCSP */
4020 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4029 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx, ct_validation_cb callback,
4035 * Since code exists that uses the custom extension handler for CT, look for
4036 * this and throw an error if they have already registered to use CT.
4038 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4039 TLSEXT_TYPE_signed_certificate_timestamp)) {
4040 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4041 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4045 ctx->ct_validation_callback = callback;
4046 ctx->ct_validation_callback_arg = arg;
4052 ct_validation_cb SSL_get_ct_validation_callback(const SSL *s)
4054 return s->ct_validation_callback;
4057 ct_validation_cb SSL_CTX_get_ct_validation_callback(const SSL_CTX *ctx)
4059 return ctx->ct_validation_callback;
4062 int ssl_validate_ct(SSL *s)
4065 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4066 X509 *issuer = NULL;
4067 CT_POLICY_EVAL_CTX *ctx = NULL;
4068 const STACK_OF(SCT) *scts;
4070 /* If no callback is set, attempt no validation - just return success */
4071 if (s->ct_validation_callback == NULL)
4075 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_NO_CERTIFICATE_ASSIGNED);
4079 if (s->verified_chain != NULL && sk_X509_num(s->verified_chain) > 1)
4080 issuer = sk_X509_value(s->verified_chain, 1);
4082 ctx = CT_POLICY_EVAL_CTX_new();
4084 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4088 CT_POLICY_EVAL_CTX_set0_cert(ctx, cert);
4089 CT_POLICY_EVAL_CTX_set0_issuer(ctx, issuer);
4090 CT_POLICY_EVAL_CTX_set0_log_store(ctx, s->ctx->ctlog_store);
4092 scts = SSL_get0_peer_scts(s);
4094 if (SCT_LIST_validate(scts, ctx) != 1) {
4095 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4099 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4101 ret = 0; /* This function returns 0 on failure */
4104 CT_POLICY_EVAL_CTX_free(ctx);
4108 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4110 int ret = CTLOG_STORE_load_default_file(ctx->ctlog_store);
4112 /* Clear any errors if the default file does not exist */
4117 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4119 return CTLOG_STORE_load_file(ctx->ctlog_store, path);