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>
163 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
165 SSL3_ENC_METHOD ssl3_undef_enc_method = {
167 * evil casts, but these functions are only called if there's a library
170 (int (*)(SSL *, int))ssl_undefined_function,
171 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
172 ssl_undefined_function,
173 (int (*)(SSL *, unsigned char *, unsigned char *, int))
174 ssl_undefined_function,
175 (int (*)(SSL *, int))ssl_undefined_function,
176 (int (*)(SSL *, const char *, int, unsigned char *))
177 ssl_undefined_function,
178 0, /* finish_mac_length */
179 NULL, /* client_finished_label */
180 0, /* client_finished_label_len */
181 NULL, /* server_finished_label */
182 0, /* server_finished_label_len */
183 (int (*)(int))ssl_undefined_function,
184 (int (*)(SSL *, unsigned char *, size_t, const char *,
185 size_t, const unsigned char *, size_t,
186 int use_context))ssl_undefined_function,
189 struct ssl_async_args {
193 enum { READFUNC, WRITEFUNC, OTHERFUNC} type;
195 int (*func_read)(SSL *, void *, int);
196 int (*func_write)(SSL *, const void *, int);
197 int (*func_other)(SSL *);
201 static const struct {
206 { DANETLS_MATCHING_FULL, 0, NID_undef },
207 { DANETLS_MATCHING_2256, 1, NID_sha256 },
208 { DANETLS_MATCHING_2512, 2, NID_sha512 },
211 static int dane_ctx_enable(struct dane_ctx_st *dctx)
213 const EVP_MD **mdevp;
215 uint8_t mdmax = DANETLS_MATCHING_LAST;
216 int n = ((int) mdmax) + 1; /* int to handle PrivMatch(255) */
219 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
220 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
222 if (mdord == NULL || mdevp == NULL) {
224 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
228 /* Install default entries */
229 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
232 if (dane_mds[i].nid == NID_undef ||
233 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
235 mdevp[dane_mds[i].mtype] = md;
236 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
246 static void dane_ctx_final(struct dane_ctx_st *dctx)
248 OPENSSL_free(dctx->mdevp);
251 OPENSSL_free(dctx->mdord);
256 static void tlsa_free(danetls_record *t)
260 OPENSSL_free(t->data);
261 EVP_PKEY_free(t->spki);
265 static void dane_final(struct dane_st *dane)
267 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
270 sk_X509_pop_free(dane->certs, X509_free);
273 X509_free(dane->mcert);
281 * dane_copy - Copy dane configuration, sans verification state.
283 static int ssl_dane_dup(SSL *to, SSL *from)
288 if (!DANETLS_ENABLED(&from->dane))
291 dane_final(&to->dane);
293 num = sk_danetls_record_num(from->dane.trecs);
294 for (i = 0; i < num; ++i) {
295 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
296 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
297 t->data, t->dlen) <= 0)
303 static int dane_mtype_set(
304 struct dane_ctx_st *dctx,
311 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
312 SSLerr(SSL_F_DANE_MTYPE_SET,
313 SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
317 if (mtype > dctx->mdmax) {
318 const EVP_MD **mdevp;
320 int n = ((int) mtype) + 1;
322 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
324 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
329 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
331 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
336 /* Zero-fill any gaps */
337 for (i = dctx->mdmax+1; i < mtype; ++i) {
345 dctx->mdevp[mtype] = md;
346 /* Coerce ordinal of disabled matching types to 0 */
347 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
352 static const EVP_MD *tlsa_md_get(struct dane_st *dane, uint8_t mtype)
354 if (mtype > dane->dctx->mdmax)
356 return dane->dctx->mdevp[mtype];
359 static int dane_tlsa_add(
360 struct dane_st *dane,
368 const EVP_MD *md = NULL;
369 int ilen = (int)dlen;
372 if (dane->trecs == NULL) {
373 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
377 if (ilen < 0 || dlen != (size_t)ilen) {
378 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
382 if (usage > DANETLS_USAGE_LAST) {
383 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
387 if (selector > DANETLS_SELECTOR_LAST) {
388 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
392 if (mtype != DANETLS_MATCHING_FULL) {
393 md = tlsa_md_get(dane, mtype);
395 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
400 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
401 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
405 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
409 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
410 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
415 t->selector = selector;
417 t->data = OPENSSL_malloc(ilen);
418 if (t->data == NULL) {
420 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
423 memcpy(t->data, data, ilen);
426 /* Validate and cache full certificate or public key */
427 if (mtype == DANETLS_MATCHING_FULL) {
428 const unsigned char *p = data;
430 EVP_PKEY *pkey = NULL;
433 case DANETLS_SELECTOR_CERT:
434 if (!d2i_X509(&cert, &p, dlen) || p < data ||
435 dlen != (size_t)(p - data)) {
437 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
440 if (X509_get0_pubkey(cert) == NULL) {
442 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
446 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
452 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
453 * records that contain full certificates of trust-anchors that are
454 * not present in the wire chain. For usage PKIX-TA(0), we augment
455 * the chain with untrusted Full(0) certificates from DNS, in case
456 * they are missing from the chain.
458 if ((dane->certs == NULL &&
459 (dane->certs = sk_X509_new_null()) == NULL) ||
460 !sk_X509_push(dane->certs, cert)) {
461 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
468 case DANETLS_SELECTOR_SPKI:
469 if (!d2i_PUBKEY(&pkey, &p, dlen) || p < data ||
470 dlen != (size_t)(p - data)) {
472 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
477 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
478 * records that contain full bare keys of trust-anchors that are
479 * not present in the wire chain.
481 if (usage == DANETLS_USAGE_DANE_TA)
490 * Find the right insertion point for the new record.
492 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
493 * they can be processed first, as they require no chain building, and no
494 * expiration or hostname checks. Because DANE-EE(3) is numerically
495 * largest, this is accomplished via descending sort by "usage".
497 * We also sort in descending order by matching ordinal to simplify
498 * the implementation of digest agility in the verification code.
500 * The choice of order for the selector is not significant, so we
501 * use the same descending order for consistency.
503 for (i = 0; i < sk_danetls_record_num(dane->trecs); ++i) {
504 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
505 if (rec->usage > usage)
507 if (rec->usage < usage)
509 if (rec->selector > selector)
511 if (rec->selector < selector)
513 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
518 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
520 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
523 dane->umask |= DANETLS_USAGE_BIT(usage);
528 static void clear_ciphers(SSL *s)
530 /* clear the current cipher */
531 ssl_clear_cipher_ctx(s);
532 ssl_clear_hash_ctx(&s->read_hash);
533 ssl_clear_hash_ctx(&s->write_hash);
536 int SSL_clear(SSL *s)
538 if (s->method == NULL) {
539 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
543 if (ssl_clear_bad_session(s)) {
544 SSL_SESSION_free(s->session);
552 if (s->renegotiate) {
553 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
557 ossl_statem_clear(s);
559 s->version = s->method->version;
560 s->client_version = s->version;
561 s->rwstate = SSL_NOTHING;
563 BUF_MEM_free(s->init_buf);
568 /* Reset DANE verification result state */
571 X509_free(s->dane.mcert);
572 s->dane.mcert = NULL;
573 s->dane.mtlsa = NULL;
575 /* Clear the verification result peername */
576 X509_VERIFY_PARAM_move_peername(s->param, NULL);
579 * Check to see if we were changed into a different method, if so, revert
580 * back if we are not doing session-id reuse.
582 if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
583 && (s->method != s->ctx->method)) {
584 s->method->ssl_free(s);
585 s->method = s->ctx->method;
586 if (!s->method->ssl_new(s))
589 s->method->ssl_clear(s);
591 RECORD_LAYER_clear(&s->rlayer);
596 /** Used to change an SSL_CTXs default SSL method type */
597 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
599 STACK_OF(SSL_CIPHER) *sk;
603 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
604 &(ctx->cipher_list_by_id),
605 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
606 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
607 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
608 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
614 SSL *SSL_new(SSL_CTX *ctx)
619 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
622 if (ctx->method == NULL) {
623 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
627 s = OPENSSL_zalloc(sizeof(*s));
631 RECORD_LAYER_init(&s->rlayer, s);
633 s->options = ctx->options;
634 s->min_proto_version = ctx->min_proto_version;
635 s->max_proto_version = ctx->max_proto_version;
637 s->max_cert_list = ctx->max_cert_list;
641 * Earlier library versions used to copy the pointer to the CERT, not
642 * its contents; only when setting new parameters for the per-SSL
643 * copy, ssl_cert_new would be called (and the direct reference to
644 * the per-SSL_CTX settings would be lost, but those still were
645 * indirectly accessed for various purposes, and for that reason they
646 * used to be known as s->ctx->default_cert). Now we don't look at the
647 * SSL_CTX's CERT after having duplicated it once.
649 s->cert = ssl_cert_dup(ctx->cert);
653 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
654 s->msg_callback = ctx->msg_callback;
655 s->msg_callback_arg = ctx->msg_callback_arg;
656 s->verify_mode = ctx->verify_mode;
657 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
658 s->sid_ctx_length = ctx->sid_ctx_length;
659 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
660 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
661 s->verify_callback = ctx->default_verify_callback;
662 s->generate_session_id = ctx->generate_session_id;
664 s->param = X509_VERIFY_PARAM_new();
665 if (s->param == NULL)
667 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
668 s->quiet_shutdown = ctx->quiet_shutdown;
669 s->max_send_fragment = ctx->max_send_fragment;
671 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
673 s->tlsext_debug_cb = 0;
674 s->tlsext_debug_arg = NULL;
675 s->tlsext_ticket_expected = 0;
676 s->tlsext_status_type = -1;
677 s->tlsext_status_expected = 0;
678 s->tlsext_ocsp_ids = NULL;
679 s->tlsext_ocsp_exts = NULL;
680 s->tlsext_ocsp_resp = NULL;
681 s->tlsext_ocsp_resplen = -1;
682 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
683 s->initial_ctx = ctx;
684 # ifndef OPENSSL_NO_EC
685 if (ctx->tlsext_ecpointformatlist) {
686 s->tlsext_ecpointformatlist =
687 OPENSSL_memdup(ctx->tlsext_ecpointformatlist,
688 ctx->tlsext_ecpointformatlist_length);
689 if (!s->tlsext_ecpointformatlist)
691 s->tlsext_ecpointformatlist_length =
692 ctx->tlsext_ecpointformatlist_length;
694 if (ctx->tlsext_ellipticcurvelist) {
695 s->tlsext_ellipticcurvelist =
696 OPENSSL_memdup(ctx->tlsext_ellipticcurvelist,
697 ctx->tlsext_ellipticcurvelist_length);
698 if (!s->tlsext_ellipticcurvelist)
700 s->tlsext_ellipticcurvelist_length =
701 ctx->tlsext_ellipticcurvelist_length;
704 # ifndef OPENSSL_NO_NEXTPROTONEG
705 s->next_proto_negotiated = NULL;
708 if (s->ctx->alpn_client_proto_list) {
709 s->alpn_client_proto_list =
710 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
711 if (s->alpn_client_proto_list == NULL)
713 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
714 s->ctx->alpn_client_proto_list_len);
715 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
718 s->verified_chain = NULL;
719 s->verify_result = X509_V_OK;
721 s->default_passwd_callback = ctx->default_passwd_callback;
722 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
724 s->method = ctx->method;
726 if (!s->method->ssl_new(s))
729 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
734 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
736 #ifndef OPENSSL_NO_PSK
737 s->psk_client_callback = ctx->psk_client_callback;
738 s->psk_server_callback = ctx->psk_server_callback;
746 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
750 void SSL_up_ref(SSL *s)
752 CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL);
755 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
756 unsigned int sid_ctx_len)
758 if (sid_ctx_len > sizeof ctx->sid_ctx) {
759 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
760 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
763 ctx->sid_ctx_length = sid_ctx_len;
764 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
769 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
770 unsigned int sid_ctx_len)
772 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
773 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
774 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
777 ssl->sid_ctx_length = sid_ctx_len;
778 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
783 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
785 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
786 ctx->generate_session_id = cb;
787 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
791 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
793 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
794 ssl->generate_session_id = cb;
795 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
799 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
803 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
804 * we can "construct" a session to give us the desired check - ie. to
805 * find if there's a session in the hash table that would conflict with
806 * any new session built out of this id/id_len and the ssl_version in use
811 if (id_len > sizeof r.session_id)
814 r.ssl_version = ssl->version;
815 r.session_id_length = id_len;
816 memcpy(r.session_id, id, id_len);
818 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
819 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
820 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
824 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
826 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
829 int SSL_set_purpose(SSL *s, int purpose)
831 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
834 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
836 return X509_VERIFY_PARAM_set_trust(s->param, trust);
839 int SSL_set_trust(SSL *s, int trust)
841 return X509_VERIFY_PARAM_set_trust(s->param, trust);
844 int SSL_set1_host(SSL *s, const char *hostname)
846 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
849 int SSL_add1_host(SSL *s, const char *hostname)
851 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
854 void SSL_set_hostflags(SSL *s, unsigned int flags)
856 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
859 const char *SSL_get0_peername(SSL *s)
861 return X509_VERIFY_PARAM_get0_peername(s->param);
864 int SSL_CTX_dane_enable(SSL_CTX *ctx)
866 return dane_ctx_enable(&ctx->dane);
869 int SSL_dane_enable(SSL *s, const char *basedomain)
871 struct dane_st *dane = &s->dane;
873 if (s->ctx->dane.mdmax == 0) {
874 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
877 if (dane->trecs != NULL) {
878 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
883 * Default SNI name. This rejects empty names, while set1_host below
884 * accepts them and disables host name checks. To avoid side-effects with
885 * invalid input, set the SNI name first.
887 if (s->tlsext_hostname == NULL) {
888 if (!SSL_set_tlsext_host_name(s, basedomain)) {
889 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
894 /* Primary RFC6125 reference identifier */
895 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
896 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
902 dane->dctx = &s->ctx->dane;
903 dane->trecs = sk_danetls_record_new_null();
905 if (dane->trecs == NULL) {
906 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
912 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
914 struct dane_st *dane = &s->dane;
916 if (!DANETLS_ENABLED(dane))
920 *mcert = dane->mcert;
922 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
927 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
928 uint8_t *mtype, unsigned const char **data, size_t *dlen)
930 struct dane_st *dane = &s->dane;
932 if (!DANETLS_ENABLED(dane))
936 *usage = dane->mtlsa->usage;
938 *selector = dane->mtlsa->selector;
940 *mtype = dane->mtlsa->mtype;
942 *data = dane->mtlsa->data;
944 *dlen = dane->mtlsa->dlen;
949 struct dane_st *SSL_get0_dane(SSL *s)
954 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
955 uint8_t mtype, unsigned char *data, size_t dlen)
957 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
960 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype, uint8_t ord)
962 return dane_mtype_set(&ctx->dane, md, mtype, ord);
965 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
967 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
970 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
972 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
975 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
980 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
985 void SSL_certs_clear(SSL *s)
987 ssl_cert_clear_certs(s->cert);
990 void SSL_free(SSL *s)
997 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
1005 fprintf(stderr, "SSL_free, bad reference count\n");
1010 X509_VERIFY_PARAM_free(s->param);
1011 dane_final(&s->dane);
1012 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1014 if (s->bbio != NULL) {
1015 /* If the buffering BIO is in place, pop it off */
1016 if (s->bbio == s->wbio) {
1017 s->wbio = BIO_pop(s->wbio);
1022 BIO_free_all(s->rbio);
1023 if (s->wbio != s->rbio)
1024 BIO_free_all(s->wbio);
1026 BUF_MEM_free(s->init_buf);
1028 /* add extra stuff */
1029 sk_SSL_CIPHER_free(s->cipher_list);
1030 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1032 /* Make the next call work :-) */
1033 if (s->session != NULL) {
1034 ssl_clear_bad_session(s);
1035 SSL_SESSION_free(s->session);
1040 ssl_cert_free(s->cert);
1041 /* Free up if allocated */
1043 OPENSSL_free(s->tlsext_hostname);
1044 SSL_CTX_free(s->initial_ctx);
1045 #ifndef OPENSSL_NO_EC
1046 OPENSSL_free(s->tlsext_ecpointformatlist);
1047 OPENSSL_free(s->tlsext_ellipticcurvelist);
1048 #endif /* OPENSSL_NO_EC */
1049 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
1050 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
1051 OPENSSL_free(s->tlsext_ocsp_resp);
1052 OPENSSL_free(s->alpn_client_proto_list);
1054 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
1056 sk_X509_pop_free(s->verified_chain, X509_free);
1058 if (s->method != NULL)
1059 s->method->ssl_free(s);
1061 RECORD_LAYER_release(&s->rlayer);
1063 SSL_CTX_free(s->ctx);
1065 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1066 OPENSSL_free(s->next_proto_negotiated);
1069 #ifndef OPENSSL_NO_SRTP
1070 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1076 void SSL_set_rbio(SSL *s, BIO *rbio)
1078 if (s->rbio != rbio)
1079 BIO_free_all(s->rbio);
1083 void SSL_set_wbio(SSL *s, BIO *wbio)
1086 * If the output buffering BIO is still in place, remove it
1088 if (s->bbio != NULL) {
1089 if (s->wbio == s->bbio) {
1090 s->wbio = s->wbio->next_bio;
1091 s->bbio->next_bio = NULL;
1094 if (s->wbio != wbio && s->rbio != s->wbio)
1095 BIO_free_all(s->wbio);
1099 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1101 SSL_set_wbio(s, wbio);
1102 SSL_set_rbio(s, rbio);
1105 BIO *SSL_get_rbio(const SSL *s)
1110 BIO *SSL_get_wbio(const SSL *s)
1115 int SSL_get_fd(const SSL *s)
1117 return (SSL_get_rfd(s));
1120 int SSL_get_rfd(const SSL *s)
1125 b = SSL_get_rbio(s);
1126 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1128 BIO_get_fd(r, &ret);
1132 int SSL_get_wfd(const SSL *s)
1137 b = SSL_get_wbio(s);
1138 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1140 BIO_get_fd(r, &ret);
1144 #ifndef OPENSSL_NO_SOCK
1145 int SSL_set_fd(SSL *s, int fd)
1150 bio = BIO_new(BIO_s_socket());
1153 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1156 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1157 SSL_set_bio(s, bio, bio);
1163 int SSL_set_wfd(SSL *s, int fd)
1168 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
1169 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
1170 bio = BIO_new(BIO_s_socket());
1173 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1176 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1177 SSL_set_bio(s, SSL_get_rbio(s), bio);
1179 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
1185 int SSL_set_rfd(SSL *s, int fd)
1190 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
1191 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
1192 bio = BIO_new(BIO_s_socket());
1195 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1198 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1199 SSL_set_bio(s, bio, SSL_get_wbio(s));
1201 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
1208 /* return length of latest Finished message we sent, copy to 'buf' */
1209 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1213 if (s->s3 != NULL) {
1214 ret = s->s3->tmp.finish_md_len;
1217 memcpy(buf, s->s3->tmp.finish_md, count);
1222 /* return length of latest Finished message we expected, copy to 'buf' */
1223 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1227 if (s->s3 != NULL) {
1228 ret = s->s3->tmp.peer_finish_md_len;
1231 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1236 int SSL_get_verify_mode(const SSL *s)
1238 return (s->verify_mode);
1241 int SSL_get_verify_depth(const SSL *s)
1243 return X509_VERIFY_PARAM_get_depth(s->param);
1246 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1247 return (s->verify_callback);
1250 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1252 return (ctx->verify_mode);
1255 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1257 return X509_VERIFY_PARAM_get_depth(ctx->param);
1260 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1261 return (ctx->default_verify_callback);
1264 void SSL_set_verify(SSL *s, int mode,
1265 int (*callback) (int ok, X509_STORE_CTX *ctx))
1267 s->verify_mode = mode;
1268 if (callback != NULL)
1269 s->verify_callback = callback;
1272 void SSL_set_verify_depth(SSL *s, int depth)
1274 X509_VERIFY_PARAM_set_depth(s->param, depth);
1277 void SSL_set_read_ahead(SSL *s, int yes)
1279 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1282 int SSL_get_read_ahead(const SSL *s)
1284 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1287 int SSL_pending(const SSL *s)
1290 * SSL_pending cannot work properly if read-ahead is enabled
1291 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1292 * impossible to fix since SSL_pending cannot report errors that may be
1293 * observed while scanning the new data. (Note that SSL_pending() is
1294 * often used as a boolean value, so we'd better not return -1.)
1296 return (s->method->ssl_pending(s));
1299 X509 *SSL_get_peer_certificate(const SSL *s)
1303 if ((s == NULL) || (s->session == NULL))
1306 r = s->session->peer;
1316 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1320 if ((s == NULL) || (s->session == NULL))
1323 r = s->session->peer_chain;
1326 * If we are a client, cert_chain includes the peer's own certificate; if
1327 * we are a server, it does not.
1334 * Now in theory, since the calling process own 't' it should be safe to
1335 * modify. We need to be able to read f without being hassled
1337 int SSL_copy_session_id(SSL *t, const SSL *f)
1339 /* Do we need to to SSL locking? */
1340 if (!SSL_set_session(t, SSL_get_session(f))) {
1345 * what if we are setup for one protocol version but want to talk another
1347 if (t->method != f->method) {
1348 t->method->ssl_free(t);
1349 t->method = f->method;
1350 if (t->method->ssl_new(t) == 0)
1354 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
1355 ssl_cert_free(t->cert);
1357 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
1364 /* Fix this so it checks all the valid key/cert options */
1365 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1367 if ((ctx == NULL) ||
1368 (ctx->cert->key->x509 == NULL)) {
1369 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1370 SSL_R_NO_CERTIFICATE_ASSIGNED);
1373 if (ctx->cert->key->privatekey == NULL) {
1374 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
1375 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1378 return (X509_check_private_key
1379 (ctx->cert->key->x509, ctx->cert->key->privatekey));
1382 /* Fix this function so that it takes an optional type parameter */
1383 int SSL_check_private_key(const SSL *ssl)
1386 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1389 if (ssl->cert->key->x509 == NULL) {
1390 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1393 if (ssl->cert->key->privatekey == NULL) {
1394 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1397 return (X509_check_private_key(ssl->cert->key->x509,
1398 ssl->cert->key->privatekey));
1401 int SSL_waiting_for_async(SSL *s)
1409 int SSL_get_async_wait_fd(SSL *s)
1414 return ASYNC_get_wait_fd(s->job);
1417 int SSL_accept(SSL *s)
1419 if (s->handshake_func == 0) {
1420 /* Not properly initialized yet */
1421 SSL_set_accept_state(s);
1424 return SSL_do_handshake(s);
1427 int SSL_connect(SSL *s)
1429 if (s->handshake_func == 0) {
1430 /* Not properly initialized yet */
1431 SSL_set_connect_state(s);
1434 return SSL_do_handshake(s);
1437 long SSL_get_default_timeout(const SSL *s)
1439 return (s->method->get_timeout());
1442 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1443 int (*func)(void *)) {
1445 switch(ASYNC_start_job(&s->job, &ret, func, args,
1446 sizeof(struct ssl_async_args))) {
1448 s->rwstate = SSL_NOTHING;
1449 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1452 s->rwstate = SSL_ASYNC_PAUSED;
1458 s->rwstate = SSL_NOTHING;
1459 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1460 /* Shouldn't happen */
1465 static int ssl_io_intern(void *vargs)
1467 struct ssl_async_args *args;
1472 args = (struct ssl_async_args *)vargs;
1476 switch (args->type) {
1478 return args->f.func_read(s, buf, num);
1480 return args->f.func_write(s, buf, num);
1482 return args->f.func_other(s);
1487 int SSL_read(SSL *s, void *buf, int num)
1489 if (s->handshake_func == 0) {
1490 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1494 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1495 s->rwstate = SSL_NOTHING;
1499 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1500 struct ssl_async_args args;
1505 args.type = READFUNC;
1506 args.f.func_read = s->method->ssl_read;
1508 return ssl_start_async_job(s, &args, ssl_io_intern);
1510 return s->method->ssl_read(s, buf, num);
1514 int SSL_peek(SSL *s, void *buf, int num)
1516 if (s->handshake_func == 0) {
1517 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1521 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1524 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1525 struct ssl_async_args args;
1530 args.type = READFUNC;
1531 args.f.func_read = s->method->ssl_peek;
1533 return ssl_start_async_job(s, &args, ssl_io_intern);
1535 return s->method->ssl_peek(s, buf, num);
1539 int SSL_write(SSL *s, const void *buf, int num)
1541 if (s->handshake_func == 0) {
1542 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1546 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1547 s->rwstate = SSL_NOTHING;
1548 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1552 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1553 struct ssl_async_args args;
1556 args.buf = (void *)buf;
1558 args.type = WRITEFUNC;
1559 args.f.func_write = s->method->ssl_write;
1561 return ssl_start_async_job(s, &args, ssl_io_intern);
1563 return s->method->ssl_write(s, buf, num);
1567 int SSL_shutdown(SSL *s)
1570 * Note that this function behaves differently from what one might
1571 * expect. Return values are 0 for no success (yet), 1 for success; but
1572 * calling it once is usually not enough, even if blocking I/O is used
1573 * (see ssl3_shutdown).
1576 if (s->handshake_func == 0) {
1577 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1581 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1582 struct ssl_async_args args;
1585 args.type = OTHERFUNC;
1586 args.f.func_other = s->method->ssl_shutdown;
1588 return ssl_start_async_job(s, &args, ssl_io_intern);
1590 return s->method->ssl_shutdown(s);
1593 return s->method->ssl_shutdown(s);
1596 int SSL_renegotiate(SSL *s)
1598 if (s->renegotiate == 0)
1603 return (s->method->ssl_renegotiate(s));
1606 int SSL_renegotiate_abbreviated(SSL *s)
1608 if (s->renegotiate == 0)
1613 return (s->method->ssl_renegotiate(s));
1616 int SSL_renegotiate_pending(SSL *s)
1619 * becomes true when negotiation is requested; false again once a
1620 * handshake has finished
1622 return (s->renegotiate != 0);
1625 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1630 case SSL_CTRL_GET_READ_AHEAD:
1631 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1632 case SSL_CTRL_SET_READ_AHEAD:
1633 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1634 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1637 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1638 s->msg_callback_arg = parg;
1642 return (s->mode |= larg);
1643 case SSL_CTRL_CLEAR_MODE:
1644 return (s->mode &= ~larg);
1645 case SSL_CTRL_GET_MAX_CERT_LIST:
1646 return (s->max_cert_list);
1647 case SSL_CTRL_SET_MAX_CERT_LIST:
1648 l = s->max_cert_list;
1649 s->max_cert_list = larg;
1651 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1652 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1654 s->max_send_fragment = larg;
1656 case SSL_CTRL_GET_RI_SUPPORT:
1658 return s->s3->send_connection_binding;
1661 case SSL_CTRL_CERT_FLAGS:
1662 return (s->cert->cert_flags |= larg);
1663 case SSL_CTRL_CLEAR_CERT_FLAGS:
1664 return (s->cert->cert_flags &= ~larg);
1666 case SSL_CTRL_GET_RAW_CIPHERLIST:
1668 if (s->s3->tmp.ciphers_raw == NULL)
1670 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1671 return (int)s->s3->tmp.ciphers_rawlen;
1673 return TLS_CIPHER_LEN;
1675 case SSL_CTRL_GET_EXTMS_SUPPORT:
1676 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1678 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1682 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1683 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1684 &s->min_proto_version);
1685 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1686 return ssl_set_version_bound(s->ctx->method->version, (int)larg,
1687 &s->max_proto_version);
1689 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1693 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1696 case SSL_CTRL_SET_MSG_CALLBACK:
1697 s->msg_callback = (void (*)
1698 (int write_p, int version, int content_type,
1699 const void *buf, size_t len, SSL *ssl,
1704 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1708 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1710 return ctx->sessions;
1713 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1716 /* For some cases with ctx == NULL perform syntax checks */
1719 #ifndef OPENSSL_NO_EC
1720 case SSL_CTRL_SET_CURVES_LIST:
1721 return tls1_set_curves_list(NULL, NULL, parg);
1723 case SSL_CTRL_SET_SIGALGS_LIST:
1724 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1725 return tls1_set_sigalgs_list(NULL, parg, 0);
1732 case SSL_CTRL_GET_READ_AHEAD:
1733 return (ctx->read_ahead);
1734 case SSL_CTRL_SET_READ_AHEAD:
1735 l = ctx->read_ahead;
1736 ctx->read_ahead = larg;
1739 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1740 ctx->msg_callback_arg = parg;
1743 case SSL_CTRL_GET_MAX_CERT_LIST:
1744 return (ctx->max_cert_list);
1745 case SSL_CTRL_SET_MAX_CERT_LIST:
1746 l = ctx->max_cert_list;
1747 ctx->max_cert_list = larg;
1750 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1751 l = ctx->session_cache_size;
1752 ctx->session_cache_size = larg;
1754 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1755 return (ctx->session_cache_size);
1756 case SSL_CTRL_SET_SESS_CACHE_MODE:
1757 l = ctx->session_cache_mode;
1758 ctx->session_cache_mode = larg;
1760 case SSL_CTRL_GET_SESS_CACHE_MODE:
1761 return (ctx->session_cache_mode);
1763 case SSL_CTRL_SESS_NUMBER:
1764 return (lh_SSL_SESSION_num_items(ctx->sessions));
1765 case SSL_CTRL_SESS_CONNECT:
1766 return (ctx->stats.sess_connect);
1767 case SSL_CTRL_SESS_CONNECT_GOOD:
1768 return (ctx->stats.sess_connect_good);
1769 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1770 return (ctx->stats.sess_connect_renegotiate);
1771 case SSL_CTRL_SESS_ACCEPT:
1772 return (ctx->stats.sess_accept);
1773 case SSL_CTRL_SESS_ACCEPT_GOOD:
1774 return (ctx->stats.sess_accept_good);
1775 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1776 return (ctx->stats.sess_accept_renegotiate);
1777 case SSL_CTRL_SESS_HIT:
1778 return (ctx->stats.sess_hit);
1779 case SSL_CTRL_SESS_CB_HIT:
1780 return (ctx->stats.sess_cb_hit);
1781 case SSL_CTRL_SESS_MISSES:
1782 return (ctx->stats.sess_miss);
1783 case SSL_CTRL_SESS_TIMEOUTS:
1784 return (ctx->stats.sess_timeout);
1785 case SSL_CTRL_SESS_CACHE_FULL:
1786 return (ctx->stats.sess_cache_full);
1788 return (ctx->mode |= larg);
1789 case SSL_CTRL_CLEAR_MODE:
1790 return (ctx->mode &= ~larg);
1791 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1792 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1794 ctx->max_send_fragment = larg;
1796 case SSL_CTRL_CERT_FLAGS:
1797 return (ctx->cert->cert_flags |= larg);
1798 case SSL_CTRL_CLEAR_CERT_FLAGS:
1799 return (ctx->cert->cert_flags &= ~larg);
1800 case SSL_CTRL_SET_MIN_PROTO_VERSION:
1801 return ssl_set_version_bound(ctx->method->version, (int)larg,
1802 &ctx->min_proto_version);
1803 case SSL_CTRL_SET_MAX_PROTO_VERSION:
1804 return ssl_set_version_bound(ctx->method->version, (int)larg,
1805 &ctx->max_proto_version);
1807 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1811 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1814 case SSL_CTRL_SET_MSG_CALLBACK:
1815 ctx->msg_callback = (void (*)
1816 (int write_p, int version, int content_type,
1817 const void *buf, size_t len, SSL *ssl,
1822 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1826 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1835 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1836 const SSL_CIPHER *const *bp)
1838 if ((*ap)->id > (*bp)->id)
1840 if ((*ap)->id < (*bp)->id)
1845 /** return a STACK of the ciphers available for the SSL and in order of
1847 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1850 if (s->cipher_list != NULL) {
1851 return (s->cipher_list);
1852 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1853 return (s->ctx->cipher_list);
1859 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
1861 if ((s == NULL) || (s->session == NULL) || !s->server)
1863 return s->session->ciphers;
1866 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1868 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1870 ciphers = SSL_get_ciphers(s);
1873 ssl_set_client_disabled(s);
1874 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1875 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1876 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1878 sk = sk_SSL_CIPHER_new_null();
1881 if (!sk_SSL_CIPHER_push(sk, c)) {
1882 sk_SSL_CIPHER_free(sk);
1890 /** return a STACK of the ciphers available for the SSL and in order of
1892 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1895 if (s->cipher_list_by_id != NULL) {
1896 return (s->cipher_list_by_id);
1897 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1898 return (s->ctx->cipher_list_by_id);
1904 /** The old interface to get the same thing as SSL_get_ciphers() */
1905 const char *SSL_get_cipher_list(const SSL *s, int n)
1907 const SSL_CIPHER *c;
1908 STACK_OF(SSL_CIPHER) *sk;
1912 sk = SSL_get_ciphers(s);
1913 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1915 c = sk_SSL_CIPHER_value(sk, n);
1921 /** specify the ciphers to be used by default by the SSL_CTX */
1922 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1924 STACK_OF(SSL_CIPHER) *sk;
1926 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1927 &ctx->cipher_list_by_id, str, ctx->cert);
1929 * ssl_create_cipher_list may return an empty stack if it was unable to
1930 * find a cipher matching the given rule string (for example if the rule
1931 * string specifies a cipher which has been disabled). This is not an
1932 * error as far as ssl_create_cipher_list is concerned, and hence
1933 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1937 else if (sk_SSL_CIPHER_num(sk) == 0) {
1938 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1944 /** specify the ciphers to be used by the SSL */
1945 int SSL_set_cipher_list(SSL *s, const char *str)
1947 STACK_OF(SSL_CIPHER) *sk;
1949 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1950 &s->cipher_list_by_id, str, s->cert);
1951 /* see comment in SSL_CTX_set_cipher_list */
1954 else if (sk_SSL_CIPHER_num(sk) == 0) {
1955 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1961 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1964 STACK_OF(SSL_CIPHER) *sk;
1965 const SSL_CIPHER *c;
1968 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1972 sk = s->session->ciphers;
1974 if (sk_SSL_CIPHER_num(sk) == 0)
1977 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1980 c = sk_SSL_CIPHER_value(sk, i);
1981 n = strlen(c->name);
1988 memcpy(p, c->name, n + 1);
1997 /** return a servername extension value if provided in Client Hello, or NULL.
1998 * So far, only host_name types are defined (RFC 3546).
2001 const char *SSL_get_servername(const SSL *s, const int type)
2003 if (type != TLSEXT_NAMETYPE_host_name)
2006 return s->session && !s->tlsext_hostname ?
2007 s->session->tlsext_hostname : s->tlsext_hostname;
2010 int SSL_get_servername_type(const SSL *s)
2013 && (!s->tlsext_hostname ? s->session->
2014 tlsext_hostname : s->tlsext_hostname))
2015 return TLSEXT_NAMETYPE_host_name;
2020 * SSL_select_next_proto implements the standard protocol selection. It is
2021 * expected that this function is called from the callback set by
2022 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2023 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2024 * not included in the length. A byte string of length 0 is invalid. No byte
2025 * string may be truncated. The current, but experimental algorithm for
2026 * selecting the protocol is: 1) If the server doesn't support NPN then this
2027 * is indicated to the callback. In this case, the client application has to
2028 * abort the connection or have a default application level protocol. 2) If
2029 * the server supports NPN, but advertises an empty list then the client
2030 * selects the first protcol in its list, but indicates via the API that this
2031 * fallback case was enacted. 3) Otherwise, the client finds the first
2032 * protocol in the server's list that it supports and selects this protocol.
2033 * This is because it's assumed that the server has better information about
2034 * which protocol a client should use. 4) If the client doesn't support any
2035 * of the server's advertised protocols, then this is treated the same as
2036 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2037 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2039 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2040 const unsigned char *server,
2041 unsigned int server_len,
2042 const unsigned char *client,
2043 unsigned int client_len)
2046 const unsigned char *result;
2047 int status = OPENSSL_NPN_UNSUPPORTED;
2050 * For each protocol in server preference order, see if we support it.
2052 for (i = 0; i < server_len;) {
2053 for (j = 0; j < client_len;) {
2054 if (server[i] == client[j] &&
2055 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2056 /* We found a match */
2057 result = &server[i];
2058 status = OPENSSL_NPN_NEGOTIATED;
2068 /* There's no overlap between our protocols and the server's list. */
2070 status = OPENSSL_NPN_NO_OVERLAP;
2073 *out = (unsigned char *)result + 1;
2074 *outlen = result[0];
2078 #ifndef OPENSSL_NO_NEXTPROTONEG
2080 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2081 * client's requested protocol for this connection and returns 0. If the
2082 * client didn't request any protocol, then *data is set to NULL. Note that
2083 * the client can request any protocol it chooses. The value returned from
2084 * this function need not be a member of the list of supported protocols
2085 * provided by the callback.
2087 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2090 *data = s->next_proto_negotiated;
2094 *len = s->next_proto_negotiated_len;
2099 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
2100 * a TLS server needs a list of supported protocols for Next Protocol
2101 * Negotiation. The returned list must be in wire format. The list is
2102 * returned by setting |out| to point to it and |outlen| to its length. This
2103 * memory will not be modified, but one should assume that the SSL* keeps a
2104 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2105 * wishes to advertise. Otherwise, no such extension will be included in the
2108 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
2109 int (*cb) (SSL *ssl,
2112 unsigned int *outlen,
2113 void *arg), void *arg)
2115 ctx->next_protos_advertised_cb = cb;
2116 ctx->next_protos_advertised_cb_arg = arg;
2120 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2121 * client needs to select a protocol from the server's provided list. |out|
2122 * must be set to point to the selected protocol (which may be within |in|).
2123 * The length of the protocol name must be written into |outlen|. The
2124 * server's advertised protocols are provided in |in| and |inlen|. The
2125 * callback can assume that |in| is syntactically valid. The client must
2126 * select a protocol. It is fatal to the connection if this callback returns
2127 * a value other than SSL_TLSEXT_ERR_OK.
2129 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
2130 int (*cb) (SSL *s, unsigned char **out,
2131 unsigned char *outlen,
2132 const unsigned char *in,
2134 void *arg), void *arg)
2136 ctx->next_proto_select_cb = cb;
2137 ctx->next_proto_select_cb_arg = arg;
2142 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2143 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2144 * length-prefixed strings). Returns 0 on success.
2146 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2147 unsigned protos_len)
2149 OPENSSL_free(ctx->alpn_client_proto_list);
2150 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
2151 if (ctx->alpn_client_proto_list == NULL)
2153 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
2154 ctx->alpn_client_proto_list_len = protos_len;
2160 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2161 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2162 * length-prefixed strings). Returns 0 on success.
2164 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2165 unsigned protos_len)
2167 OPENSSL_free(ssl->alpn_client_proto_list);
2168 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
2169 if (ssl->alpn_client_proto_list == NULL)
2171 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
2172 ssl->alpn_client_proto_list_len = protos_len;
2178 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2179 * called during ClientHello processing in order to select an ALPN protocol
2180 * from the client's list of offered protocols.
2182 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2183 int (*cb) (SSL *ssl,
2184 const unsigned char **out,
2185 unsigned char *outlen,
2186 const unsigned char *in,
2188 void *arg), void *arg)
2190 ctx->alpn_select_cb = cb;
2191 ctx->alpn_select_cb_arg = arg;
2195 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
2196 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
2197 * (not including the leading length-prefix byte). If the server didn't
2198 * respond with a negotiated protocol then |*len| will be zero.
2200 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2205 *data = ssl->s3->alpn_selected;
2209 *len = ssl->s3->alpn_selected_len;
2213 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2214 const char *label, size_t llen,
2215 const unsigned char *p, size_t plen,
2218 if (s->version < TLS1_VERSION)
2221 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2226 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2231 ((unsigned int)a->session_id[0]) |
2232 ((unsigned int)a->session_id[1] << 8L) |
2233 ((unsigned long)a->session_id[2] << 16L) |
2234 ((unsigned long)a->session_id[3] << 24L);
2239 * NB: If this function (or indeed the hash function which uses a sort of
2240 * coarser function than this one) is changed, ensure
2241 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2242 * being able to construct an SSL_SESSION that will collide with any existing
2243 * session with a matching session ID.
2245 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2247 if (a->ssl_version != b->ssl_version)
2249 if (a->session_id_length != b->session_id_length)
2251 return (memcmp(a->session_id, b->session_id, a->session_id_length));
2255 * These wrapper functions should remain rather than redeclaring
2256 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2257 * variable. The reason is that the functions aren't static, they're exposed
2261 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2263 SSL_CTX *ret = NULL;
2266 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2270 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
2271 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_AT_LEAST_TLS_1_0_NEEDED_IN_FIPS_MODE);
2275 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2276 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2279 ret = OPENSSL_zalloc(sizeof(*ret));
2284 ret->min_proto_version = 0;
2285 ret->max_proto_version = 0;
2286 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2287 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2288 /* We take the system default. */
2289 ret->session_timeout = meth->get_timeout();
2290 ret->references = 1;
2291 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2292 ret->verify_mode = SSL_VERIFY_NONE;
2293 if ((ret->cert = ssl_cert_new()) == NULL)
2296 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
2297 if (ret->sessions == NULL)
2299 ret->cert_store = X509_STORE_new();
2300 if (ret->cert_store == NULL)
2303 if (!ssl_create_cipher_list(ret->method,
2304 &ret->cipher_list, &ret->cipher_list_by_id,
2305 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2306 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
2307 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2311 ret->param = X509_VERIFY_PARAM_new();
2312 if (ret->param == NULL)
2315 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2316 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2319 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2320 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2324 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
2327 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
2329 /* No compression for DTLS */
2330 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2331 ret->comp_methods = SSL_COMP_get_compression_methods();
2333 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2335 /* Setup RFC4507 ticket keys */
2336 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
2337 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
2338 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
2339 ret->options |= SSL_OP_NO_TICKET;
2341 #ifndef OPENSSL_NO_SRP
2342 if (!SSL_CTX_SRP_CTX_init(ret))
2345 #ifndef OPENSSL_NO_ENGINE
2346 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2347 # define eng_strx(x) #x
2348 # define eng_str(x) eng_strx(x)
2349 /* Use specific client engine automatically... ignore errors */
2352 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2355 ENGINE_load_builtin_engines();
2356 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2358 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2364 * Default is to connect to non-RI servers. When RI is more widely
2365 * deployed might change this.
2367 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2369 * Disable compression by default to prevent CRIME. Applications can
2370 * re-enable compression by configuring
2371 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2372 * or by using the SSL_CONF library.
2374 ret->options |= SSL_OP_NO_COMPRESSION;
2378 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2384 void SSL_CTX_up_ref(SSL_CTX *ctx)
2386 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
2389 void SSL_CTX_free(SSL_CTX *a)
2396 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2398 REF_PRINT("SSL_CTX", a);
2404 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
2409 X509_VERIFY_PARAM_free(a->param);
2410 dane_ctx_final(&a->dane);
2413 * Free internal session cache. However: the remove_cb() may reference
2414 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2415 * after the sessions were flushed.
2416 * As the ex_data handling routines might also touch the session cache,
2417 * the most secure solution seems to be: empty (flush) the cache, then
2418 * free ex_data, then finally free the cache.
2419 * (See ticket [openssl.org #212].)
2421 if (a->sessions != NULL)
2422 SSL_CTX_flush_sessions(a, 0);
2424 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2425 lh_SSL_SESSION_free(a->sessions);
2426 X509_STORE_free(a->cert_store);
2427 sk_SSL_CIPHER_free(a->cipher_list);
2428 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2429 ssl_cert_free(a->cert);
2430 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2431 sk_X509_pop_free(a->extra_certs, X509_free);
2432 a->comp_methods = NULL;
2433 #ifndef OPENSSL_NO_SRTP
2434 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2436 #ifndef OPENSSL_NO_SRP
2437 SSL_CTX_SRP_CTX_free(a);
2439 #ifndef OPENSSL_NO_ENGINE
2440 if (a->client_cert_engine)
2441 ENGINE_finish(a->client_cert_engine);
2444 #ifndef OPENSSL_NO_EC
2445 OPENSSL_free(a->tlsext_ecpointformatlist);
2446 OPENSSL_free(a->tlsext_ellipticcurvelist);
2448 OPENSSL_free(a->alpn_client_proto_list);
2453 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2455 ctx->default_passwd_callback = cb;
2458 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2460 ctx->default_passwd_callback_userdata = u;
2463 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2465 s->default_passwd_callback = cb;
2468 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2470 s->default_passwd_callback_userdata = u;
2473 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2474 int (*cb) (X509_STORE_CTX *, void *),
2477 ctx->app_verify_callback = cb;
2478 ctx->app_verify_arg = arg;
2481 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2482 int (*cb) (int, X509_STORE_CTX *))
2484 ctx->verify_mode = mode;
2485 ctx->default_verify_callback = cb;
2488 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2490 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2493 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2496 ssl_cert_set_cert_cb(c->cert, cb, arg);
2499 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2501 ssl_cert_set_cert_cb(s->cert, cb, arg);
2504 void ssl_set_masks(SSL *s, const SSL_CIPHER *cipher)
2506 #if !defined(OPENSSL_NO_EC) || !defined(OPENSSL_NO_GOST)
2510 uint32_t *pvalid = s->s3->tmp.valid_flags;
2511 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
2512 unsigned long mask_k, mask_a;
2513 #ifndef OPENSSL_NO_EC
2514 int have_ecc_cert, ecdsa_ok;
2517 int pk_nid = 0, md_nid = 0;
2522 #ifndef OPENSSL_NO_DH
2523 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2528 rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
2529 rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
2530 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
2531 #ifndef OPENSSL_NO_EC
2532 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2538 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
2539 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
2542 #ifndef OPENSSL_NO_GOST
2543 cpk = &(c->pkeys[SSL_PKEY_GOST12_512]);
2544 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2545 mask_k |= SSL_kGOST;
2546 mask_a |= SSL_aGOST12;
2548 cpk = &(c->pkeys[SSL_PKEY_GOST12_256]);
2549 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2550 mask_k |= SSL_kGOST;
2551 mask_a |= SSL_aGOST12;
2553 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2554 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2555 mask_k |= SSL_kGOST;
2556 mask_a |= SSL_aGOST01;
2566 if (rsa_enc || rsa_sign) {
2574 mask_a |= SSL_aNULL;
2577 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2578 * depending on the key usage extension.
2580 #ifndef OPENSSL_NO_EC
2581 if (have_ecc_cert) {
2583 cpk = &c->pkeys[SSL_PKEY_ECC];
2585 ex_kusage = X509_get_key_usage(x);
2586 ecdh_ok = ex_kusage & X509v3_KU_KEY_AGREEMENT;
2587 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2588 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2590 OBJ_find_sigid_algs(X509_get_signature_nid(x), &md_nid, &pk_nid);
2593 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2594 mask_k |= SSL_kECDHr;
2595 mask_a |= SSL_aECDH;
2598 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2599 mask_k |= SSL_kECDHe;
2600 mask_a |= SSL_aECDH;
2604 mask_a |= SSL_aECDSA;
2609 #ifndef OPENSSL_NO_EC
2610 mask_k |= SSL_kECDHE;
2613 #ifndef OPENSSL_NO_PSK
2616 if (mask_k & SSL_kRSA)
2617 mask_k |= SSL_kRSAPSK;
2618 if (mask_k & SSL_kDHE)
2619 mask_k |= SSL_kDHEPSK;
2620 if (mask_k & SSL_kECDHE)
2621 mask_k |= SSL_kECDHEPSK;
2624 s->s3->tmp.mask_k = mask_k;
2625 s->s3->tmp.mask_a = mask_a;
2628 #ifndef OPENSSL_NO_EC
2630 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2632 unsigned long alg_k, alg_a;
2633 int md_nid = 0, pk_nid = 0;
2634 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2635 uint32_t ex_kusage = X509_get_key_usage(x);
2637 alg_k = cs->algorithm_mkey;
2638 alg_a = cs->algorithm_auth;
2640 OBJ_find_sigid_algs(X509_get_signature_nid(x), &md_nid, &pk_nid);
2642 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2643 /* key usage, if present, must allow key agreement */
2644 if (!(ex_kusage & X509v3_KU_KEY_AGREEMENT)) {
2645 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2646 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2649 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2650 /* signature alg must be ECDSA */
2651 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2652 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2653 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2657 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2658 /* signature alg must be RSA */
2660 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2661 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2662 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2667 if (alg_a & SSL_aECDSA) {
2668 /* key usage, if present, must allow signing */
2669 if (!(ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) {
2670 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2671 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2676 return 1; /* all checks are ok */
2681 static int ssl_get_server_cert_index(const SSL *s)
2684 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2685 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2686 idx = SSL_PKEY_RSA_SIGN;
2687 if (idx == SSL_PKEY_GOST_EC) {
2688 if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)
2689 idx = SSL_PKEY_GOST12_512;
2690 else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509)
2691 idx = SSL_PKEY_GOST12_256;
2692 else if (s->cert->pkeys[SSL_PKEY_GOST01].x509)
2693 idx = SSL_PKEY_GOST01;
2698 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2702 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2708 if (!s->s3 || !s->s3->tmp.new_cipher)
2710 ssl_set_masks(s, s->s3->tmp.new_cipher);
2712 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2714 * Broken protocol test: return last used certificate: which may mismatch
2717 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2721 i = ssl_get_server_cert_index(s);
2723 /* This may or may not be an error. */
2728 return &c->pkeys[i];
2731 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2734 unsigned long alg_a;
2738 alg_a = cipher->algorithm_auth;
2741 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2743 * Broken protocol test: use last key: which may mismatch the one
2746 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2747 idx = c->key - c->pkeys;
2751 if ((alg_a & SSL_aDSS) &&
2752 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2753 idx = SSL_PKEY_DSA_SIGN;
2754 else if (alg_a & SSL_aRSA) {
2755 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2756 idx = SSL_PKEY_RSA_SIGN;
2757 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2758 idx = SSL_PKEY_RSA_ENC;
2759 } else if ((alg_a & SSL_aECDSA) &&
2760 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2763 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2767 *pmd = s->s3->tmp.md[idx];
2768 return c->pkeys[idx].privatekey;
2771 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2772 size_t *serverinfo_length)
2776 *serverinfo_length = 0;
2779 i = ssl_get_server_cert_index(s);
2783 if (c->pkeys[i].serverinfo == NULL)
2786 *serverinfo = c->pkeys[i].serverinfo;
2787 *serverinfo_length = c->pkeys[i].serverinfo_length;
2791 void ssl_update_cache(SSL *s, int mode)
2796 * If the session_id_length is 0, we are not supposed to cache it, and it
2797 * would be rather hard to do anyway :-)
2799 if (s->session->session_id_length == 0)
2802 i = s->session_ctx->session_cache_mode;
2803 if ((i & mode) && (!s->hit)
2804 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2805 || SSL_CTX_add_session(s->session_ctx, s->session))
2806 && (s->session_ctx->new_session_cb != NULL)) {
2807 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2808 if (!s->session_ctx->new_session_cb(s, s->session))
2809 SSL_SESSION_free(s->session);
2812 /* auto flush every 255 connections */
2813 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2814 if ((((mode & SSL_SESS_CACHE_CLIENT)
2815 ? s->session_ctx->stats.sess_connect_good
2816 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2817 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2822 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2827 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2832 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2836 if (s->method != meth) {
2837 const SSL_METHOD *sm = s->method;
2838 int (*hf)(SSL *) = s->handshake_func;
2840 if (sm->version == meth->version)
2845 ret = s->method->ssl_new(s);
2848 if (hf == sm->ssl_connect)
2849 s->handshake_func = meth->ssl_connect;
2850 else if (hf == sm->ssl_accept)
2851 s->handshake_func = meth->ssl_accept;
2856 int SSL_get_error(const SSL *s, int i)
2863 return (SSL_ERROR_NONE);
2866 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2867 * where we do encode the error
2869 if ((l = ERR_peek_error()) != 0) {
2870 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2871 return (SSL_ERROR_SYSCALL);
2873 return (SSL_ERROR_SSL);
2876 if ((i < 0) && SSL_want_read(s)) {
2877 bio = SSL_get_rbio(s);
2878 if (BIO_should_read(bio))
2879 return (SSL_ERROR_WANT_READ);
2880 else if (BIO_should_write(bio))
2882 * This one doesn't make too much sense ... We never try to write
2883 * to the rbio, and an application program where rbio and wbio
2884 * are separate couldn't even know what it should wait for.
2885 * However if we ever set s->rwstate incorrectly (so that we have
2886 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2887 * wbio *are* the same, this test works around that bug; so it
2888 * might be safer to keep it.
2890 return (SSL_ERROR_WANT_WRITE);
2891 else if (BIO_should_io_special(bio)) {
2892 reason = BIO_get_retry_reason(bio);
2893 if (reason == BIO_RR_CONNECT)
2894 return (SSL_ERROR_WANT_CONNECT);
2895 else if (reason == BIO_RR_ACCEPT)
2896 return (SSL_ERROR_WANT_ACCEPT);
2898 return (SSL_ERROR_SYSCALL); /* unknown */
2902 if ((i < 0) && SSL_want_write(s)) {
2903 bio = SSL_get_wbio(s);
2904 if (BIO_should_write(bio))
2905 return (SSL_ERROR_WANT_WRITE);
2906 else if (BIO_should_read(bio))
2908 * See above (SSL_want_read(s) with BIO_should_write(bio))
2910 return (SSL_ERROR_WANT_READ);
2911 else if (BIO_should_io_special(bio)) {
2912 reason = BIO_get_retry_reason(bio);
2913 if (reason == BIO_RR_CONNECT)
2914 return (SSL_ERROR_WANT_CONNECT);
2915 else if (reason == BIO_RR_ACCEPT)
2916 return (SSL_ERROR_WANT_ACCEPT);
2918 return (SSL_ERROR_SYSCALL);
2921 if ((i < 0) && SSL_want_x509_lookup(s)) {
2922 return (SSL_ERROR_WANT_X509_LOOKUP);
2924 if ((i < 0) && SSL_want_async(s)) {
2925 return SSL_ERROR_WANT_ASYNC;
2929 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2930 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2931 return (SSL_ERROR_ZERO_RETURN);
2933 return (SSL_ERROR_SYSCALL);
2936 static int ssl_do_handshake_intern(void *vargs)
2938 struct ssl_async_args *args;
2941 args = (struct ssl_async_args *)vargs;
2944 return s->handshake_func(s);
2947 int SSL_do_handshake(SSL *s)
2951 if (s->handshake_func == NULL) {
2952 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2956 s->method->ssl_renegotiate_check(s);
2958 if (SSL_in_init(s) || SSL_in_before(s)) {
2959 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2960 struct ssl_async_args args;
2964 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
2966 ret = s->handshake_func(s);
2972 void SSL_set_accept_state(SSL *s)
2976 ossl_statem_clear(s);
2977 s->handshake_func = s->method->ssl_accept;
2981 void SSL_set_connect_state(SSL *s)
2985 ossl_statem_clear(s);
2986 s->handshake_func = s->method->ssl_connect;
2990 int ssl_undefined_function(SSL *s)
2992 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2996 int ssl_undefined_void_function(void)
2998 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2999 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3003 int ssl_undefined_const_function(const SSL *s)
3008 SSL_METHOD *ssl_bad_method(int ver)
3010 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3014 const char *SSL_get_version(const SSL *s)
3016 if (s->version == TLS1_2_VERSION)
3018 else if (s->version == TLS1_1_VERSION)
3020 else if (s->version == TLS1_VERSION)
3022 else if (s->version == SSL3_VERSION)
3024 else if (s->version == DTLS1_BAD_VER)
3025 return ("DTLSv0.9");
3026 else if (s->version == DTLS1_VERSION)
3028 else if (s->version == DTLS1_2_VERSION)
3029 return ("DTLSv1.2");
3034 SSL *SSL_dup(SSL *s)
3036 STACK_OF(X509_NAME) *sk;
3041 /* If we're not quiescent, just up_ref! */
3042 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3043 CRYPTO_add(&s->references, 1, CRYPTO_LOCK_SSL);
3048 * Otherwise, copy configuration state, and session if set.
3050 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3053 if (s->session != NULL) {
3055 * Arranges to share the same session via up_ref. This "copies"
3056 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3058 if (!SSL_copy_session_id(ret, s))
3062 * No session has been established yet, so we have to expect that
3063 * s->cert or ret->cert will be changed later -- they should not both
3064 * point to the same object, and thus we can't use
3065 * SSL_copy_session_id.
3067 if (!SSL_set_ssl_method(ret, s->method))
3070 if (s->cert != NULL) {
3071 ssl_cert_free(ret->cert);
3072 ret->cert = ssl_cert_dup(s->cert);
3073 if (ret->cert == NULL)
3077 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
3081 ssl_dane_dup(ret, s);
3082 ret->version = s->version;
3083 ret->options = s->options;
3084 ret->mode = s->mode;
3085 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3086 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3087 ret->msg_callback = s->msg_callback;
3088 ret->msg_callback_arg = s->msg_callback_arg;
3089 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3090 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3091 ret->generate_session_id = s->generate_session_id;
3093 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3095 /* copy app data, a little dangerous perhaps */
3096 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3099 /* setup rbio, and wbio */
3100 if (s->rbio != NULL) {
3101 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3104 if (s->wbio != NULL) {
3105 if (s->wbio != s->rbio) {
3106 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3109 ret->wbio = ret->rbio;
3112 ret->server = s->server;
3113 if (s->handshake_func) {
3115 SSL_set_accept_state(ret);
3117 SSL_set_connect_state(ret);
3119 ret->shutdown = s->shutdown;
3122 ret->default_passwd_callback = s->default_passwd_callback;
3123 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3125 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3127 /* dup the cipher_list and cipher_list_by_id stacks */
3128 if (s->cipher_list != NULL) {
3129 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3132 if (s->cipher_list_by_id != NULL)
3133 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3137 /* Dup the client_CA list */
3138 if (s->client_CA != NULL) {
3139 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
3141 ret->client_CA = sk;
3142 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3143 xn = sk_X509_NAME_value(sk, i);
3144 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3157 void ssl_clear_cipher_ctx(SSL *s)
3159 if (s->enc_read_ctx != NULL) {
3160 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3161 s->enc_read_ctx = NULL;
3163 if (s->enc_write_ctx != NULL) {
3164 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3165 s->enc_write_ctx = NULL;
3167 #ifndef OPENSSL_NO_COMP
3168 COMP_CTX_free(s->expand);
3170 COMP_CTX_free(s->compress);
3175 X509 *SSL_get_certificate(const SSL *s)
3177 if (s->cert != NULL)
3178 return (s->cert->key->x509);
3183 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3185 if (s->cert != NULL)
3186 return (s->cert->key->privatekey);
3191 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3193 if (ctx->cert != NULL)
3194 return ctx->cert->key->x509;
3199 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3201 if (ctx->cert != NULL)
3202 return ctx->cert->key->privatekey;
3207 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3209 if ((s->session != NULL) && (s->session->cipher != NULL))
3210 return (s->session->cipher);
3214 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3216 #ifndef OPENSSL_NO_COMP
3217 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3223 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3225 #ifndef OPENSSL_NO_COMP
3226 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3232 int ssl_init_wbio_buffer(SSL *s, int push)
3236 if (s->bbio == NULL) {
3237 bbio = BIO_new(BIO_f_buffer());
3243 if (s->bbio == s->wbio)
3244 s->wbio = BIO_pop(s->wbio);
3246 (void)BIO_reset(bbio);
3247 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3248 if (!BIO_set_read_buffer_size(bbio, 1)) {
3249 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3253 if (s->wbio != bbio)
3254 s->wbio = BIO_push(bbio, s->wbio);
3256 if (s->wbio == bbio)
3257 s->wbio = BIO_pop(bbio);
3262 void ssl_free_wbio_buffer(SSL *s)
3264 /* callers ensure s is never null */
3265 if (s->bbio == NULL)
3268 if (s->bbio == s->wbio) {
3269 /* remove buffering */
3270 s->wbio = BIO_pop(s->wbio);
3271 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
3272 * adding one more preprocessor symbol */
3273 assert(s->wbio != NULL);
3280 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3282 ctx->quiet_shutdown = mode;
3285 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3287 return (ctx->quiet_shutdown);
3290 void SSL_set_quiet_shutdown(SSL *s, int mode)
3292 s->quiet_shutdown = mode;
3295 int SSL_get_quiet_shutdown(const SSL *s)
3297 return (s->quiet_shutdown);
3300 void SSL_set_shutdown(SSL *s, int mode)
3305 int SSL_get_shutdown(const SSL *s)
3307 return (s->shutdown);
3310 int SSL_version(const SSL *s)
3312 return (s->version);
3315 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3320 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3323 if (ssl->ctx == ctx)
3326 ctx = ssl->initial_ctx;
3327 new_cert = ssl_cert_dup(ctx->cert);
3328 if (new_cert == NULL) {
3331 ssl_cert_free(ssl->cert);
3332 ssl->cert = new_cert;
3335 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3336 * so setter APIs must prevent invalid lengths from entering the system.
3338 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3341 * If the session ID context matches that of the parent SSL_CTX,
3342 * inherit it from the new SSL_CTX as well. If however the context does
3343 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3344 * leave it unchanged.
3346 if ((ssl->ctx != NULL) &&
3347 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3348 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3349 ssl->sid_ctx_length = ctx->sid_ctx_length;
3350 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3353 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3354 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3360 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3362 return (X509_STORE_set_default_paths(ctx->cert_store));
3365 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3367 X509_LOOKUP *lookup;
3369 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3372 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3374 /* Clear any errors if the default directory does not exist */
3380 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3382 X509_LOOKUP *lookup;
3384 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3388 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3390 /* Clear any errors if the default file does not exist */
3396 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3399 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3402 void SSL_set_info_callback(SSL *ssl,
3403 void (*cb) (const SSL *ssl, int type, int val))
3405 ssl->info_callback = cb;
3409 * One compiler (Diab DCC) doesn't like argument names in returned function
3412 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3415 return ssl->info_callback;
3418 void SSL_set_verify_result(SSL *ssl, long arg)
3420 ssl->verify_result = arg;
3423 long SSL_get_verify_result(const SSL *ssl)
3425 return (ssl->verify_result);
3428 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3431 return sizeof(ssl->s3->client_random);
3432 if (outlen > sizeof(ssl->s3->client_random))
3433 outlen = sizeof(ssl->s3->client_random);
3434 memcpy(out, ssl->s3->client_random, outlen);
3438 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3441 return sizeof(ssl->s3->server_random);
3442 if (outlen > sizeof(ssl->s3->server_random))
3443 outlen = sizeof(ssl->s3->server_random);
3444 memcpy(out, ssl->s3->server_random, outlen);
3448 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3449 unsigned char *out, size_t outlen)
3451 if (session->master_key_length < 0) {
3452 /* Should never happen */
3456 return session->master_key_length;
3457 if (outlen > (size_t)session->master_key_length)
3458 outlen = session->master_key_length;
3459 memcpy(out, session->master_key, outlen);
3463 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3465 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3468 void *SSL_get_ex_data(const SSL *s, int idx)
3470 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3473 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3475 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3478 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3480 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3488 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3490 return (ctx->cert_store);
3493 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3495 X509_STORE_free(ctx->cert_store);
3496 ctx->cert_store = store;
3499 int SSL_want(const SSL *s)
3501 return (s->rwstate);
3505 * \brief Set the callback for generating temporary DH keys.
3506 * \param ctx the SSL context.
3507 * \param dh the callback
3510 #ifndef OPENSSL_NO_DH
3511 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3512 DH *(*dh) (SSL *ssl, int is_export,
3515 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3518 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3521 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3525 #ifndef OPENSSL_NO_PSK
3526 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3528 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3529 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3530 SSL_R_DATA_LENGTH_TOO_LONG);
3533 OPENSSL_free(ctx->cert->psk_identity_hint);
3534 if (identity_hint != NULL) {
3535 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3536 if (ctx->cert->psk_identity_hint == NULL)
3539 ctx->cert->psk_identity_hint = NULL;
3543 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3548 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3549 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3552 OPENSSL_free(s->cert->psk_identity_hint);
3553 if (identity_hint != NULL) {
3554 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
3555 if (s->cert->psk_identity_hint == NULL)
3558 s->cert->psk_identity_hint = NULL;
3562 const char *SSL_get_psk_identity_hint(const SSL *s)
3564 if (s == NULL || s->session == NULL)
3566 return (s->session->psk_identity_hint);
3569 const char *SSL_get_psk_identity(const SSL *s)
3571 if (s == NULL || s->session == NULL)
3573 return (s->session->psk_identity);
3576 void SSL_set_psk_client_callback(SSL *s,
3577 unsigned int (*cb) (SSL *ssl,
3586 s->psk_client_callback = cb;
3589 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3590 unsigned int (*cb) (SSL *ssl,
3599 ctx->psk_client_callback = cb;
3602 void SSL_set_psk_server_callback(SSL *s,
3603 unsigned int (*cb) (SSL *ssl,
3604 const char *identity,
3609 s->psk_server_callback = cb;
3612 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3613 unsigned int (*cb) (SSL *ssl,
3614 const char *identity,
3619 ctx->psk_server_callback = cb;
3623 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3624 void (*cb) (int write_p, int version,
3625 int content_type, const void *buf,
3626 size_t len, SSL *ssl, void *arg))
3628 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3631 void SSL_set_msg_callback(SSL *ssl,
3632 void (*cb) (int write_p, int version,
3633 int content_type, const void *buf,
3634 size_t len, SSL *ssl, void *arg))
3636 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3639 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3640 int (*cb) (SSL *ssl,
3644 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3645 (void (*)(void))cb);
3648 void SSL_set_not_resumable_session_callback(SSL *ssl,
3649 int (*cb) (SSL *ssl,
3650 int is_forward_secure))
3652 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3653 (void (*)(void))cb);
3657 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3658 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3659 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3663 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3665 ssl_clear_hash_ctx(hash);
3666 *hash = EVP_MD_CTX_new();
3667 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3668 EVP_MD_CTX_free(*hash);
3675 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3679 EVP_MD_CTX_free(*hash);
3683 /* Retrieve handshake hashes */
3684 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3686 EVP_MD_CTX *ctx = NULL;
3687 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
3688 int ret = EVP_MD_CTX_size(hdgst);
3689 if (ret < 0 || ret > outlen) {
3693 ctx = EVP_MD_CTX_new();
3698 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
3699 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
3702 EVP_MD_CTX_free(ctx);
3706 int SSL_cache_hit(SSL *s)
3711 int SSL_is_server(SSL *s)
3716 #if OPENSSL_API_COMPAT < 0x10100000L
3717 void SSL_set_debug(SSL *s, int debug)
3719 /* Old function was do-nothing anyway... */
3726 void SSL_set_security_level(SSL *s, int level)
3728 s->cert->sec_level = level;
3731 int SSL_get_security_level(const SSL *s)
3733 return s->cert->sec_level;
3736 void SSL_set_security_callback(SSL *s,
3737 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3738 int bits, int nid, void *other,
3741 s->cert->sec_cb = cb;
3744 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3746 void *other, void *ex) {
3747 return s->cert->sec_cb;
3750 void SSL_set0_security_ex_data(SSL *s, void *ex)
3752 s->cert->sec_ex = ex;
3755 void *SSL_get0_security_ex_data(const SSL *s)
3757 return s->cert->sec_ex;
3760 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3762 ctx->cert->sec_level = level;
3765 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3767 return ctx->cert->sec_level;
3770 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3771 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3772 int bits, int nid, void *other,
3775 ctx->cert->sec_cb = cb;
3778 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3784 return ctx->cert->sec_cb;
3787 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3789 ctx->cert->sec_ex = ex;
3792 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3794 return ctx->cert->sec_ex;
3799 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
3800 * can return unsigned long, instead of the generic long return value from the
3801 * control interface.
3803 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
3805 return ctx->options;
3807 unsigned long SSL_get_options(const SSL* s)
3811 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
3813 return ctx->options |= op;
3815 unsigned long SSL_set_options(SSL *s, unsigned long op)
3817 return s->options |= op;
3819 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
3821 return ctx->options &= ~op;
3823 unsigned long SSL_clear_options(SSL *s, unsigned long op)
3825 return s->options &= ~op;
3828 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
3830 return s->verified_chain;
3833 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);