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 "kssl_lcl.h"
151 #include <openssl/objects.h>
152 #include <openssl/lhash.h>
153 #include <openssl/x509v3.h>
154 #include <openssl/rand.h>
155 #include <openssl/ocsp.h>
156 #ifndef OPENSSL_NO_DH
157 # include <openssl/dh.h>
159 #ifndef OPENSSL_NO_ENGINE
160 # include <openssl/engine.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 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
180 NULL, /* client_finished_label */
181 0, /* client_finished_label_len */
182 NULL, /* server_finished_label */
183 0, /* server_finished_label_len */
184 (int (*)(int))ssl_undefined_function,
185 (int (*)(SSL *, unsigned char *, size_t, const char *,
186 size_t, const unsigned char *, size_t,
187 int use_context))ssl_undefined_function,
190 int SSL_clear(SSL *s)
193 if (s->method == NULL) {
194 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
198 if (ssl_clear_bad_session(s)) {
199 SSL_SESSION_free(s->session);
209 * Disabled since version 1.10 of this file (early return not
210 * needed because SSL_clear is not called when doing renegotiation)
213 * This is set if we are doing dynamic renegotiation so keep
214 * the old cipher. It is sort of a SSL_clear_lite :-)
219 if (s->renegotiate) {
220 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
227 s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT);
229 s->version = s->method->version;
230 s->client_version = s->version;
231 s->rwstate = SSL_NOTHING;
232 s->rstate = SSL_ST_READ_HEADER;
234 s->read_ahead = s->ctx->read_ahead;
237 if (s->init_buf != NULL) {
238 BUF_MEM_free(s->init_buf);
242 ssl_clear_cipher_ctx(s);
243 ssl_clear_hash_ctx(&s->read_hash);
244 ssl_clear_hash_ctx(&s->write_hash);
247 #ifndef OPENSSL_NO_TLSEXT
248 if (s->cert != NULL) {
249 if (s->cert->alpn_proposed) {
250 OPENSSL_free(s->cert->alpn_proposed);
251 s->cert->alpn_proposed = NULL;
253 s->cert->alpn_proposed_len = 0;
254 s->cert->alpn_sent = 0;
259 * Check to see if we were changed into a different method, if so, revert
260 * back if we are not doing session-id reuse.
262 if (!s->in_handshake && (s->session == NULL)
263 && (s->method != s->ctx->method)) {
264 s->method->ssl_free(s);
265 s->method = s->ctx->method;
266 if (!s->method->ssl_new(s))
270 s->method->ssl_clear(s);
274 /** Used to change an SSL_CTXs default SSL method type */
275 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
277 STACK_OF(SSL_CIPHER) *sk;
281 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
282 &(ctx->cipher_list_by_id),
284 SSL2_VERSION ? "SSLv2" :
285 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
286 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
287 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
288 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
294 SSL *SSL_new(SSL_CTX *ctx)
299 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
302 if (ctx->method == NULL) {
303 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
307 s = (SSL *)OPENSSL_malloc(sizeof(SSL));
310 memset(s, 0, sizeof(SSL));
312 #ifndef OPENSSL_NO_KRB5
313 s->kssl_ctx = kssl_ctx_new();
314 #endif /* OPENSSL_NO_KRB5 */
316 s->options = ctx->options;
318 s->max_cert_list = ctx->max_cert_list;
321 if (ctx->cert != NULL) {
323 * Earlier library versions used to copy the pointer to the CERT, not
324 * its contents; only when setting new parameters for the per-SSL
325 * copy, ssl_cert_new would be called (and the direct reference to
326 * the per-SSL_CTX settings would be lost, but those still were
327 * indirectly accessed for various purposes, and for that reason they
328 * used to be known as s->ctx->default_cert). Now we don't look at the
329 * SSL_CTX's CERT after having duplicated it once.
332 s->cert = ssl_cert_dup(ctx->cert);
336 s->cert = NULL; /* Cannot really happen (see SSL_CTX_new) */
338 s->read_ahead = ctx->read_ahead;
339 s->msg_callback = ctx->msg_callback;
340 s->msg_callback_arg = ctx->msg_callback_arg;
341 s->verify_mode = ctx->verify_mode;
343 s->verify_depth = ctx->verify_depth;
345 s->sid_ctx_length = ctx->sid_ctx_length;
346 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
347 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
348 s->verify_callback = ctx->default_verify_callback;
349 s->generate_session_id = ctx->generate_session_id;
351 s->param = X509_VERIFY_PARAM_new();
354 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
356 s->purpose = ctx->purpose;
357 s->trust = ctx->trust;
359 s->quiet_shutdown = ctx->quiet_shutdown;
360 s->max_send_fragment = ctx->max_send_fragment;
362 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
364 #ifndef OPENSSL_NO_TLSEXT
365 s->tlsext_debug_cb = 0;
366 s->tlsext_debug_arg = NULL;
367 s->tlsext_ticket_expected = 0;
368 s->tlsext_status_type = -1;
369 s->tlsext_status_expected = 0;
370 s->tlsext_ocsp_ids = NULL;
371 s->tlsext_ocsp_exts = NULL;
372 s->tlsext_ocsp_resp = NULL;
373 s->tlsext_ocsp_resplen = -1;
374 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
375 s->initial_ctx = ctx;
376 # ifndef OPENSSL_NO_EC
377 if (ctx->tlsext_ecpointformatlist) {
378 s->tlsext_ecpointformatlist =
379 BUF_memdup(ctx->tlsext_ecpointformatlist,
380 ctx->tlsext_ecpointformatlist_length);
381 if (!s->tlsext_ecpointformatlist)
383 s->tlsext_ecpointformatlist_length =
384 ctx->tlsext_ecpointformatlist_length;
386 if (ctx->tlsext_ellipticcurvelist) {
387 s->tlsext_ellipticcurvelist =
388 BUF_memdup(ctx->tlsext_ellipticcurvelist,
389 ctx->tlsext_ellipticcurvelist_length);
390 if (!s->tlsext_ellipticcurvelist)
392 s->tlsext_ellipticcurvelist_length =
393 ctx->tlsext_ellipticcurvelist_length;
396 # ifndef OPENSSL_NO_NEXTPROTONEG
397 s->next_proto_negotiated = NULL;
400 if (s->ctx->alpn_client_proto_list) {
401 s->alpn_client_proto_list =
402 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
403 if (s->alpn_client_proto_list == NULL)
405 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
406 s->ctx->alpn_client_proto_list_len);
407 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
411 s->verify_result = X509_V_OK;
413 s->method = ctx->method;
415 if (!s->method->ssl_new(s))
418 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
422 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
424 #ifndef OPENSSL_NO_PSK
425 s->psk_client_callback = ctx->psk_client_callback;
426 s->psk_server_callback = ctx->psk_server_callback;
433 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
437 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
438 unsigned int sid_ctx_len)
440 if (sid_ctx_len > sizeof ctx->sid_ctx) {
441 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
442 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
445 ctx->sid_ctx_length = sid_ctx_len;
446 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
451 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
452 unsigned int sid_ctx_len)
454 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
455 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
456 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
459 ssl->sid_ctx_length = sid_ctx_len;
460 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
465 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
467 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
468 ctx->generate_session_id = cb;
469 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
473 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
475 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
476 ssl->generate_session_id = cb;
477 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
481 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
485 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
486 * we can "construct" a session to give us the desired check - ie. to
487 * find if there's a session in the hash table that would conflict with
488 * any new session built out of this id/id_len and the ssl_version in use
493 if (id_len > sizeof r.session_id)
496 r.ssl_version = ssl->version;
497 r.session_id_length = id_len;
498 memcpy(r.session_id, id, id_len);
500 * NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
501 * callback is calling us to check the uniqueness of a shorter ID, it
502 * must be compared as a padded-out ID because that is what it will be
503 * converted to when the callback has finished choosing it.
505 if ((r.ssl_version == SSL2_VERSION) &&
506 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) {
507 memset(r.session_id + id_len, 0, SSL2_SSL_SESSION_ID_LENGTH - id_len);
508 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
511 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
512 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
513 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
517 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
519 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
522 int SSL_set_purpose(SSL *s, int purpose)
524 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
527 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
529 return X509_VERIFY_PARAM_set_trust(s->param, trust);
532 int SSL_set_trust(SSL *s, int trust)
534 return X509_VERIFY_PARAM_set_trust(s->param, trust);
537 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
539 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
542 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
544 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
547 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
552 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
557 void SSL_certs_clear(SSL *s)
559 ssl_cert_clear_certs(s->cert);
562 void SSL_free(SSL *s)
569 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
577 fprintf(stderr, "SSL_free, bad reference count\n");
583 X509_VERIFY_PARAM_free(s->param);
585 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
587 if (s->bbio != NULL) {
588 /* If the buffering BIO is in place, pop it off */
589 if (s->bbio == s->wbio) {
590 s->wbio = BIO_pop(s->wbio);
596 BIO_free_all(s->rbio);
597 if ((s->wbio != NULL) && (s->wbio != s->rbio))
598 BIO_free_all(s->wbio);
600 if (s->init_buf != NULL)
601 BUF_MEM_free(s->init_buf);
603 /* add extra stuff */
604 if (s->cipher_list != NULL)
605 sk_SSL_CIPHER_free(s->cipher_list);
606 if (s->cipher_list_by_id != NULL)
607 sk_SSL_CIPHER_free(s->cipher_list_by_id);
609 /* Make the next call work :-) */
610 if (s->session != NULL) {
611 ssl_clear_bad_session(s);
612 SSL_SESSION_free(s->session);
615 ssl_clear_cipher_ctx(s);
616 ssl_clear_hash_ctx(&s->read_hash);
617 ssl_clear_hash_ctx(&s->write_hash);
620 ssl_cert_free(s->cert);
621 /* Free up if allocated */
623 #ifndef OPENSSL_NO_TLSEXT
624 if (s->tlsext_hostname)
625 OPENSSL_free(s->tlsext_hostname);
627 SSL_CTX_free(s->initial_ctx);
628 # ifndef OPENSSL_NO_EC
629 if (s->tlsext_ecpointformatlist)
630 OPENSSL_free(s->tlsext_ecpointformatlist);
631 if (s->tlsext_ellipticcurvelist)
632 OPENSSL_free(s->tlsext_ellipticcurvelist);
633 # endif /* OPENSSL_NO_EC */
634 if (s->tlsext_opaque_prf_input)
635 OPENSSL_free(s->tlsext_opaque_prf_input);
636 if (s->tlsext_ocsp_exts)
637 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
638 if (s->tlsext_ocsp_ids)
639 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
640 if (s->tlsext_ocsp_resp)
641 OPENSSL_free(s->tlsext_ocsp_resp);
642 if (s->alpn_client_proto_list)
643 OPENSSL_free(s->alpn_client_proto_list);
646 if (s->client_CA != NULL)
647 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
649 if (s->method != NULL)
650 s->method->ssl_free(s);
653 SSL_CTX_free(s->ctx);
655 #ifndef OPENSSL_NO_KRB5
656 if (s->kssl_ctx != NULL)
657 kssl_ctx_free(s->kssl_ctx);
658 #endif /* OPENSSL_NO_KRB5 */
660 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
661 if (s->next_proto_negotiated)
662 OPENSSL_free(s->next_proto_negotiated);
665 #ifndef OPENSSL_NO_SRTP
666 if (s->srtp_profiles)
667 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
673 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
676 * If the output buffering BIO is still in place, remove it
678 if (s->bbio != NULL) {
679 if (s->wbio == s->bbio) {
680 s->wbio = s->wbio->next_bio;
681 s->bbio->next_bio = NULL;
684 if ((s->rbio != NULL) && (s->rbio != rbio))
685 BIO_free_all(s->rbio);
686 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
687 BIO_free_all(s->wbio);
692 BIO *SSL_get_rbio(const SSL *s)
697 BIO *SSL_get_wbio(const SSL *s)
702 int SSL_get_fd(const SSL *s)
704 return (SSL_get_rfd(s));
707 int SSL_get_rfd(const SSL *s)
713 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
719 int SSL_get_wfd(const SSL *s)
725 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
731 #ifndef OPENSSL_NO_SOCK
732 int SSL_set_fd(SSL *s, int fd)
737 bio = BIO_new(BIO_s_socket());
740 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
743 BIO_set_fd(bio, fd, BIO_NOCLOSE);
744 SSL_set_bio(s, bio, bio);
750 int SSL_set_wfd(SSL *s, int fd)
755 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
756 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
757 bio = BIO_new(BIO_s_socket());
760 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
763 BIO_set_fd(bio, fd, BIO_NOCLOSE);
764 SSL_set_bio(s, SSL_get_rbio(s), bio);
766 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
772 int SSL_set_rfd(SSL *s, int fd)
777 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
778 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
779 bio = BIO_new(BIO_s_socket());
782 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
785 BIO_set_fd(bio, fd, BIO_NOCLOSE);
786 SSL_set_bio(s, bio, SSL_get_wbio(s));
788 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
795 /* return length of latest Finished message we sent, copy to 'buf' */
796 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
801 ret = s->s3->tmp.finish_md_len;
804 memcpy(buf, s->s3->tmp.finish_md, count);
809 /* return length of latest Finished message we expected, copy to 'buf' */
810 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
815 ret = s->s3->tmp.peer_finish_md_len;
818 memcpy(buf, s->s3->tmp.peer_finish_md, count);
823 int SSL_get_verify_mode(const SSL *s)
825 return (s->verify_mode);
828 int SSL_get_verify_depth(const SSL *s)
830 return X509_VERIFY_PARAM_get_depth(s->param);
833 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
834 return (s->verify_callback);
837 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
839 return (ctx->verify_mode);
842 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
844 return X509_VERIFY_PARAM_get_depth(ctx->param);
847 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
848 return (ctx->default_verify_callback);
851 void SSL_set_verify(SSL *s, int mode,
852 int (*callback) (int ok, X509_STORE_CTX *ctx))
854 s->verify_mode = mode;
855 if (callback != NULL)
856 s->verify_callback = callback;
859 void SSL_set_verify_depth(SSL *s, int depth)
861 X509_VERIFY_PARAM_set_depth(s->param, depth);
864 void SSL_set_read_ahead(SSL *s, int yes)
869 int SSL_get_read_ahead(const SSL *s)
871 return (s->read_ahead);
874 int SSL_pending(const SSL *s)
877 * SSL_pending cannot work properly if read-ahead is enabled
878 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
879 * impossible to fix since SSL_pending cannot report errors that may be
880 * observed while scanning the new data. (Note that SSL_pending() is
881 * often used as a boolean value, so we'd better not return -1.)
883 return (s->method->ssl_pending(s));
886 X509 *SSL_get_peer_certificate(const SSL *s)
890 if ((s == NULL) || (s->session == NULL))
893 r = s->session->peer;
898 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
903 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
907 if ((s == NULL) || (s->session == NULL)
908 || (s->session->sess_cert == NULL))
911 r = s->session->sess_cert->cert_chain;
914 * If we are a client, cert_chain includes the peer's own certificate; if
915 * we are a server, it does not.
922 * Now in theory, since the calling process own 't' it should be safe to
923 * modify. We need to be able to read f without being hassled
925 void SSL_copy_session_id(SSL *t, const SSL *f)
929 /* Do we need to to SSL locking? */
930 SSL_set_session(t, SSL_get_session(f));
933 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
935 if (t->method != f->method) {
936 t->method->ssl_free(t); /* cleanup current */
937 t->method = f->method; /* change method */
938 t->method->ssl_new(t); /* setup new */
942 if (f->cert != NULL) {
943 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
949 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length);
952 /* Fix this so it checks all the valid key/cert options */
953 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
956 (ctx->cert == NULL) || (ctx->cert->key->x509 == NULL)) {
957 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
958 SSL_R_NO_CERTIFICATE_ASSIGNED);
961 if (ctx->cert->key->privatekey == NULL) {
962 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
963 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
966 return (X509_check_private_key
967 (ctx->cert->key->x509, ctx->cert->key->privatekey));
970 /* Fix this function so that it takes an optional type parameter */
971 int SSL_check_private_key(const SSL *ssl)
974 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
977 if (ssl->cert == NULL) {
978 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
981 if (ssl->cert->key->x509 == NULL) {
982 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
985 if (ssl->cert->key->privatekey == NULL) {
986 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
989 return (X509_check_private_key(ssl->cert->key->x509,
990 ssl->cert->key->privatekey));
993 int SSL_accept(SSL *s)
995 if (s->handshake_func == 0)
996 /* Not properly initialized yet */
997 SSL_set_accept_state(s);
999 return (s->method->ssl_accept(s));
1002 int SSL_connect(SSL *s)
1004 if (s->handshake_func == 0)
1005 /* Not properly initialized yet */
1006 SSL_set_connect_state(s);
1008 return (s->method->ssl_connect(s));
1011 long SSL_get_default_timeout(const SSL *s)
1013 return (s->method->get_timeout());
1016 int SSL_read(SSL *s, void *buf, int num)
1018 if (s->handshake_func == 0) {
1019 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1023 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1024 s->rwstate = SSL_NOTHING;
1027 return (s->method->ssl_read(s, buf, num));
1030 int SSL_peek(SSL *s, void *buf, int num)
1032 if (s->handshake_func == 0) {
1033 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1037 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1040 return (s->method->ssl_peek(s, buf, num));
1043 int SSL_write(SSL *s, const void *buf, int num)
1045 if (s->handshake_func == 0) {
1046 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1050 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1051 s->rwstate = SSL_NOTHING;
1052 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1055 return (s->method->ssl_write(s, buf, num));
1058 int SSL_shutdown(SSL *s)
1061 * Note that this function behaves differently from what one might
1062 * expect. Return values are 0 for no success (yet), 1 for success; but
1063 * calling it once is usually not enough, even if blocking I/O is used
1064 * (see ssl3_shutdown).
1067 if (s->handshake_func == 0) {
1068 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1072 if (!SSL_in_init(s)) {
1073 return s->method->ssl_shutdown(s);
1075 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1080 int SSL_renegotiate(SSL *s)
1082 if (s->renegotiate == 0)
1087 return (s->method->ssl_renegotiate(s));
1090 int SSL_renegotiate_abbreviated(SSL *s)
1092 if (s->renegotiate == 0)
1097 return (s->method->ssl_renegotiate(s));
1100 int SSL_renegotiate_pending(SSL *s)
1103 * becomes true when negotiation is requested; false again once a
1104 * handshake has finished
1106 return (s->renegotiate != 0);
1109 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1114 case SSL_CTRL_GET_READ_AHEAD:
1115 return (s->read_ahead);
1116 case SSL_CTRL_SET_READ_AHEAD:
1118 s->read_ahead = larg;
1121 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1122 s->msg_callback_arg = parg;
1125 case SSL_CTRL_OPTIONS:
1126 return (s->options |= larg);
1127 case SSL_CTRL_CLEAR_OPTIONS:
1128 return (s->options &= ~larg);
1130 return (s->mode |= larg);
1131 case SSL_CTRL_CLEAR_MODE:
1132 return (s->mode &= ~larg);
1133 case SSL_CTRL_GET_MAX_CERT_LIST:
1134 return (s->max_cert_list);
1135 case SSL_CTRL_SET_MAX_CERT_LIST:
1136 l = s->max_cert_list;
1137 s->max_cert_list = larg;
1139 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1140 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1142 s->max_send_fragment = larg;
1144 case SSL_CTRL_GET_RI_SUPPORT:
1146 return s->s3->send_connection_binding;
1149 case SSL_CTRL_CERT_FLAGS:
1150 return (s->cert->cert_flags |= larg);
1151 case SSL_CTRL_CLEAR_CERT_FLAGS:
1152 return (s->cert->cert_flags &= ~larg);
1154 case SSL_CTRL_GET_RAW_CIPHERLIST:
1156 if (s->cert->ciphers_raw == NULL)
1158 *(unsigned char **)parg = s->cert->ciphers_raw;
1159 return (int)s->cert->ciphers_rawlen;
1161 return ssl_put_cipher_by_char(s, NULL, NULL);
1163 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1167 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1170 case SSL_CTRL_SET_MSG_CALLBACK:
1171 s->msg_callback = (void (*)
1172 (int write_p, int version, int content_type,
1173 const void *buf, size_t len, SSL *ssl,
1178 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1182 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1184 return ctx->sessions;
1187 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1190 /* For some cases with ctx == NULL perform syntax checks */
1193 #ifndef OPENSSL_NO_EC
1194 case SSL_CTRL_SET_CURVES_LIST:
1195 return tls1_set_curves_list(NULL, NULL, parg);
1197 case SSL_CTRL_SET_SIGALGS_LIST:
1198 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1199 return tls1_set_sigalgs_list(NULL, parg, 0);
1206 case SSL_CTRL_GET_READ_AHEAD:
1207 return (ctx->read_ahead);
1208 case SSL_CTRL_SET_READ_AHEAD:
1209 l = ctx->read_ahead;
1210 ctx->read_ahead = larg;
1213 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1214 ctx->msg_callback_arg = parg;
1217 case SSL_CTRL_GET_MAX_CERT_LIST:
1218 return (ctx->max_cert_list);
1219 case SSL_CTRL_SET_MAX_CERT_LIST:
1220 l = ctx->max_cert_list;
1221 ctx->max_cert_list = larg;
1224 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1225 l = ctx->session_cache_size;
1226 ctx->session_cache_size = larg;
1228 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1229 return (ctx->session_cache_size);
1230 case SSL_CTRL_SET_SESS_CACHE_MODE:
1231 l = ctx->session_cache_mode;
1232 ctx->session_cache_mode = larg;
1234 case SSL_CTRL_GET_SESS_CACHE_MODE:
1235 return (ctx->session_cache_mode);
1237 case SSL_CTRL_SESS_NUMBER:
1238 return (lh_SSL_SESSION_num_items(ctx->sessions));
1239 case SSL_CTRL_SESS_CONNECT:
1240 return (ctx->stats.sess_connect);
1241 case SSL_CTRL_SESS_CONNECT_GOOD:
1242 return (ctx->stats.sess_connect_good);
1243 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1244 return (ctx->stats.sess_connect_renegotiate);
1245 case SSL_CTRL_SESS_ACCEPT:
1246 return (ctx->stats.sess_accept);
1247 case SSL_CTRL_SESS_ACCEPT_GOOD:
1248 return (ctx->stats.sess_accept_good);
1249 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1250 return (ctx->stats.sess_accept_renegotiate);
1251 case SSL_CTRL_SESS_HIT:
1252 return (ctx->stats.sess_hit);
1253 case SSL_CTRL_SESS_CB_HIT:
1254 return (ctx->stats.sess_cb_hit);
1255 case SSL_CTRL_SESS_MISSES:
1256 return (ctx->stats.sess_miss);
1257 case SSL_CTRL_SESS_TIMEOUTS:
1258 return (ctx->stats.sess_timeout);
1259 case SSL_CTRL_SESS_CACHE_FULL:
1260 return (ctx->stats.sess_cache_full);
1261 case SSL_CTRL_OPTIONS:
1262 return (ctx->options |= larg);
1263 case SSL_CTRL_CLEAR_OPTIONS:
1264 return (ctx->options &= ~larg);
1266 return (ctx->mode |= larg);
1267 case SSL_CTRL_CLEAR_MODE:
1268 return (ctx->mode &= ~larg);
1269 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1270 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1272 ctx->max_send_fragment = larg;
1274 case SSL_CTRL_CERT_FLAGS:
1275 return (ctx->cert->cert_flags |= larg);
1276 case SSL_CTRL_CLEAR_CERT_FLAGS:
1277 return (ctx->cert->cert_flags &= ~larg);
1279 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1283 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1286 case SSL_CTRL_SET_MSG_CALLBACK:
1287 ctx->msg_callback = (void (*)
1288 (int write_p, int version, int content_type,
1289 const void *buf, size_t len, SSL *ssl,
1294 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1298 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1306 return ((l > 0) ? 1 : -1);
1309 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1310 const SSL_CIPHER *const *bp)
1314 l = (*ap)->id - (*bp)->id;
1318 return ((l > 0) ? 1 : -1);
1321 /** return a STACK of the ciphers available for the SSL and in order of
1323 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1326 if (s->cipher_list != NULL) {
1327 return (s->cipher_list);
1328 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1329 return (s->ctx->cipher_list);
1335 /** return a STACK of the ciphers available for the SSL and in order of
1337 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1340 if (s->cipher_list_by_id != NULL) {
1341 return (s->cipher_list_by_id);
1342 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1343 return (s->ctx->cipher_list_by_id);
1349 /** The old interface to get the same thing as SSL_get_ciphers() */
1350 const char *SSL_get_cipher_list(const SSL *s, int n)
1353 STACK_OF(SSL_CIPHER) *sk;
1357 sk = SSL_get_ciphers(s);
1358 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1360 c = sk_SSL_CIPHER_value(sk, n);
1366 /** specify the ciphers to be used by default by the SSL_CTX */
1367 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1369 STACK_OF(SSL_CIPHER) *sk;
1371 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1372 &ctx->cipher_list_by_id, str, ctx->cert);
1374 * ssl_create_cipher_list may return an empty stack if it was unable to
1375 * find a cipher matching the given rule string (for example if the rule
1376 * string specifies a cipher which has been disabled). This is not an
1377 * error as far as ssl_create_cipher_list is concerned, and hence
1378 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1382 else if (sk_SSL_CIPHER_num(sk) == 0) {
1383 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1389 /** specify the ciphers to be used by the SSL */
1390 int SSL_set_cipher_list(SSL *s, const char *str)
1392 STACK_OF(SSL_CIPHER) *sk;
1394 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1395 &s->cipher_list_by_id, str, s->cert);
1396 /* see comment in SSL_CTX_set_cipher_list */
1399 else if (sk_SSL_CIPHER_num(sk) == 0) {
1400 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1406 /* works well for SSLv2, not so good for SSLv3 */
1407 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1410 STACK_OF(SSL_CIPHER) *sk;
1414 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1418 sk = s->session->ciphers;
1420 if (sk_SSL_CIPHER_num(sk) == 0)
1423 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1426 c = sk_SSL_CIPHER_value(sk, i);
1427 n = strlen(c->name);
1443 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1445 int (*put_cb) (const SSL_CIPHER *,
1452 int empty_reneg_info_scsv = !s->renegotiate;
1453 /* Set disabled masks for this session */
1454 ssl_set_client_disabled(s);
1460 put_cb = s->method->put_cipher_by_char;
1462 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1463 c = sk_SSL_CIPHER_value(sk, i);
1464 /* Skip disabled ciphers */
1465 if (c->algorithm_ssl & ct->mask_ssl ||
1466 c->algorithm_mkey & ct->mask_k || c->algorithm_auth & ct->mask_a)
1468 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1469 if (c->id == SSL3_CK_SCSV) {
1470 if (!empty_reneg_info_scsv)
1473 empty_reneg_info_scsv = 0;
1480 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1484 if (empty_reneg_info_scsv) {
1485 static SSL_CIPHER scsv = {
1486 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1488 j = put_cb(&scsv, p);
1490 #ifdef OPENSSL_RI_DEBUG
1492 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1495 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1496 static SSL_CIPHER scsv = {
1497 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1499 j = put_cb(&scsv, p);
1507 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1509 STACK_OF(SSL_CIPHER) **skp)
1511 const SSL_CIPHER *c;
1512 STACK_OF(SSL_CIPHER) *sk;
1516 s->s3->send_connection_binding = 0;
1518 n = ssl_put_cipher_by_char(s, NULL, NULL);
1519 if (n == 0 || (num % n) != 0) {
1520 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1521 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1524 if ((skp == NULL) || (*skp == NULL)) {
1525 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1527 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1532 sk_SSL_CIPHER_zero(sk);
1535 if (s->cert->ciphers_raw)
1536 OPENSSL_free(s->cert->ciphers_raw);
1537 s->cert->ciphers_raw = BUF_memdup(p, num);
1538 if (s->cert->ciphers_raw == NULL) {
1539 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1542 s->cert->ciphers_rawlen = (size_t)num;
1544 for (i = 0; i < num; i += n) {
1545 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1546 if (s->s3 && (n != 3 || !p[0]) &&
1547 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1548 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1549 /* SCSV fatal if renegotiating */
1550 if (s->renegotiate) {
1551 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1552 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1553 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1556 s->s3->send_connection_binding = 1;
1558 #ifdef OPENSSL_RI_DEBUG
1559 fprintf(stderr, "SCSV received by server\n");
1564 /* Check for TLS_FALLBACK_SCSV */
1565 if ((n != 3 || !p[0]) &&
1566 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1567 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1569 * The SCSV indicates that the client previously tried a higher
1570 * version. Fail if the current version is an unexpected
1573 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1574 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1575 SSL_R_INAPPROPRIATE_FALLBACK);
1577 ssl3_send_alert(s, SSL3_AL_FATAL,
1578 SSL_AD_INAPPROPRIATE_FALLBACK);
1585 c = ssl_get_cipher_by_char(s, p);
1588 if (!sk_SSL_CIPHER_push(sk, c)) {
1589 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1599 if ((skp == NULL) || (*skp == NULL))
1600 sk_SSL_CIPHER_free(sk);
1604 #ifndef OPENSSL_NO_TLSEXT
1605 /** return a servername extension value if provided in Client Hello, or NULL.
1606 * So far, only host_name types are defined (RFC 3546).
1609 const char *SSL_get_servername(const SSL *s, const int type)
1611 if (type != TLSEXT_NAMETYPE_host_name)
1614 return s->session && !s->tlsext_hostname ?
1615 s->session->tlsext_hostname : s->tlsext_hostname;
1618 int SSL_get_servername_type(const SSL *s)
1621 && (!s->tlsext_hostname ? s->session->
1622 tlsext_hostname : s->tlsext_hostname))
1623 return TLSEXT_NAMETYPE_host_name;
1628 * SSL_select_next_proto implements the standard protocol selection. It is
1629 * expected that this function is called from the callback set by
1630 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1631 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1632 * not included in the length. A byte string of length 0 is invalid. No byte
1633 * string may be truncated. The current, but experimental algorithm for
1634 * selecting the protocol is: 1) If the server doesn't support NPN then this
1635 * is indicated to the callback. In this case, the client application has to
1636 * abort the connection or have a default application level protocol. 2) If
1637 * the server supports NPN, but advertises an empty list then the client
1638 * selects the first protcol in its list, but indicates via the API that this
1639 * fallback case was enacted. 3) Otherwise, the client finds the first
1640 * protocol in the server's list that it supports and selects this protocol.
1641 * This is because it's assumed that the server has better information about
1642 * which protocol a client should use. 4) If the client doesn't support any
1643 * of the server's advertised protocols, then this is treated the same as
1644 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1645 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1647 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1648 const unsigned char *server,
1649 unsigned int server_len,
1650 const unsigned char *client,
1651 unsigned int client_len)
1654 const unsigned char *result;
1655 int status = OPENSSL_NPN_UNSUPPORTED;
1658 * For each protocol in server preference order, see if we support it.
1660 for (i = 0; i < server_len;) {
1661 for (j = 0; j < client_len;) {
1662 if (server[i] == client[j] &&
1663 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1664 /* We found a match */
1665 result = &server[i];
1666 status = OPENSSL_NPN_NEGOTIATED;
1676 /* There's no overlap between our protocols and the server's list. */
1678 status = OPENSSL_NPN_NO_OVERLAP;
1681 *out = (unsigned char *)result + 1;
1682 *outlen = result[0];
1686 # ifndef OPENSSL_NO_NEXTPROTONEG
1688 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1689 * client's requested protocol for this connection and returns 0. If the
1690 * client didn't request any protocol, then *data is set to NULL. Note that
1691 * the client can request any protocol it chooses. The value returned from
1692 * this function need not be a member of the list of supported protocols
1693 * provided by the callback.
1695 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1698 *data = s->next_proto_negotiated;
1702 *len = s->next_proto_negotiated_len;
1707 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1708 * a TLS server needs a list of supported protocols for Next Protocol
1709 * Negotiation. The returned list must be in wire format. The list is
1710 * returned by setting |out| to point to it and |outlen| to its length. This
1711 * memory will not be modified, but one should assume that the SSL* keeps a
1712 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1713 * wishes to advertise. Otherwise, no such extension will be included in the
1716 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1717 int (*cb) (SSL *ssl,
1720 unsigned int *outlen,
1721 void *arg), void *arg)
1723 ctx->next_protos_advertised_cb = cb;
1724 ctx->next_protos_advertised_cb_arg = arg;
1728 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1729 * client needs to select a protocol from the server's provided list. |out|
1730 * must be set to point to the selected protocol (which may be within |in|).
1731 * The length of the protocol name must be written into |outlen|. The
1732 * server's advertised protocols are provided in |in| and |inlen|. The
1733 * callback can assume that |in| is syntactically valid. The client must
1734 * select a protocol. It is fatal to the connection if this callback returns
1735 * a value other than SSL_TLSEXT_ERR_OK.
1737 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1738 int (*cb) (SSL *s, unsigned char **out,
1739 unsigned char *outlen,
1740 const unsigned char *in,
1742 void *arg), void *arg)
1744 ctx->next_proto_select_cb = cb;
1745 ctx->next_proto_select_cb_arg = arg;
1750 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1751 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1752 * length-prefixed strings). Returns 0 on success.
1754 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1755 unsigned protos_len)
1757 if (ctx->alpn_client_proto_list)
1758 OPENSSL_free(ctx->alpn_client_proto_list);
1760 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1761 if (!ctx->alpn_client_proto_list)
1763 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1764 ctx->alpn_client_proto_list_len = protos_len;
1770 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1771 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1772 * length-prefixed strings). Returns 0 on success.
1774 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1775 unsigned protos_len)
1777 if (ssl->alpn_client_proto_list)
1778 OPENSSL_free(ssl->alpn_client_proto_list);
1780 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1781 if (!ssl->alpn_client_proto_list)
1783 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1784 ssl->alpn_client_proto_list_len = protos_len;
1790 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1791 * called during ClientHello processing in order to select an ALPN protocol
1792 * from the client's list of offered protocols.
1794 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1795 int (*cb) (SSL *ssl,
1796 const unsigned char **out,
1797 unsigned char *outlen,
1798 const unsigned char *in,
1800 void *arg), void *arg)
1802 ctx->alpn_select_cb = cb;
1803 ctx->alpn_select_cb_arg = arg;
1807 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1808 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1809 * (not including the leading length-prefix byte). If the server didn't
1810 * respond with a negotiated protocol then |*len| will be zero.
1812 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1817 *data = ssl->s3->alpn_selected;
1821 *len = ssl->s3->alpn_selected_len;
1824 #endif /* !OPENSSL_NO_TLSEXT */
1826 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1827 const char *label, size_t llen,
1828 const unsigned char *p, size_t plen,
1831 if (s->version < TLS1_VERSION)
1834 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1839 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1844 ((unsigned int)a->session_id[0]) |
1845 ((unsigned int)a->session_id[1] << 8L) |
1846 ((unsigned long)a->session_id[2] << 16L) |
1847 ((unsigned long)a->session_id[3] << 24L);
1852 * NB: If this function (or indeed the hash function which uses a sort of
1853 * coarser function than this one) is changed, ensure
1854 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1855 * being able to construct an SSL_SESSION that will collide with any existing
1856 * session with a matching session ID.
1858 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1860 if (a->ssl_version != b->ssl_version)
1862 if (a->session_id_length != b->session_id_length)
1864 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1868 * These wrapper functions should remain rather than redeclaring
1869 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1870 * variable. The reason is that the functions aren't static, they're exposed
1873 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1874 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1876 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1878 SSL_CTX *ret = NULL;
1881 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1885 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1886 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1891 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1892 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1895 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1899 memset(ret, 0, sizeof(SSL_CTX));
1903 ret->cert_store = NULL;
1904 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1905 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1906 ret->session_cache_head = NULL;
1907 ret->session_cache_tail = NULL;
1909 /* We take the system default */
1910 ret->session_timeout = meth->get_timeout();
1912 ret->new_session_cb = 0;
1913 ret->remove_session_cb = 0;
1914 ret->get_session_cb = 0;
1915 ret->generate_session_id = 0;
1917 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1919 ret->references = 1;
1920 ret->quiet_shutdown = 0;
1922 /* ret->cipher=NULL;*/
1924 ret->s2->challenge=NULL;
1925 ret->master_key=NULL;
1927 ret->s2->conn_id=NULL; */
1929 ret->info_callback = NULL;
1931 ret->app_verify_callback = 0;
1932 ret->app_verify_arg = NULL;
1934 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1935 ret->read_ahead = 0;
1936 ret->msg_callback = 0;
1937 ret->msg_callback_arg = NULL;
1938 ret->verify_mode = SSL_VERIFY_NONE;
1940 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */
1942 ret->sid_ctx_length = 0;
1943 ret->default_verify_callback = NULL;
1944 if ((ret->cert = ssl_cert_new()) == NULL)
1947 ret->default_passwd_callback = 0;
1948 ret->default_passwd_callback_userdata = NULL;
1949 ret->client_cert_cb = 0;
1950 ret->app_gen_cookie_cb = 0;
1951 ret->app_verify_cookie_cb = 0;
1953 ret->sessions = lh_SSL_SESSION_new();
1954 if (ret->sessions == NULL)
1956 ret->cert_store = X509_STORE_new();
1957 if (ret->cert_store == NULL)
1960 ssl_create_cipher_list(ret->method,
1961 &ret->cipher_list, &ret->cipher_list_by_id,
1963 SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST,
1965 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1966 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1970 ret->param = X509_VERIFY_PARAM_new();
1974 if ((ret->rsa_md5 = EVP_get_digestbyname("ssl2-md5")) == NULL) {
1975 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1978 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1979 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1982 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1983 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1987 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1990 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1992 ret->extra_certs = NULL;
1993 /* No compression for DTLS */
1994 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1995 ret->comp_methods = SSL_COMP_get_compression_methods();
1997 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1999 #ifndef OPENSSL_NO_TLSEXT
2000 ret->tlsext_servername_callback = 0;
2001 ret->tlsext_servername_arg = NULL;
2002 /* Setup RFC4507 ticket keys */
2003 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
2004 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
2005 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
2006 ret->options |= SSL_OP_NO_TICKET;
2008 ret->tlsext_status_cb = 0;
2009 ret->tlsext_status_arg = NULL;
2011 # ifndef OPENSSL_NO_NEXTPROTONEG
2012 ret->next_protos_advertised_cb = 0;
2013 ret->next_proto_select_cb = 0;
2016 #ifndef OPENSSL_NO_PSK
2017 ret->psk_identity_hint = NULL;
2018 ret->psk_client_callback = NULL;
2019 ret->psk_server_callback = NULL;
2021 #ifndef OPENSSL_NO_SRP
2022 SSL_CTX_SRP_CTX_init(ret);
2024 #ifndef OPENSSL_NO_BUF_FREELISTS
2025 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
2026 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
2027 if (!ret->rbuf_freelist)
2029 ret->rbuf_freelist->chunklen = 0;
2030 ret->rbuf_freelist->len = 0;
2031 ret->rbuf_freelist->head = NULL;
2032 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
2033 if (!ret->wbuf_freelist) {
2034 OPENSSL_free(ret->rbuf_freelist);
2037 ret->wbuf_freelist->chunklen = 0;
2038 ret->wbuf_freelist->len = 0;
2039 ret->wbuf_freelist->head = NULL;
2041 #ifndef OPENSSL_NO_ENGINE
2042 ret->client_cert_engine = NULL;
2043 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2044 # define eng_strx(x) #x
2045 # define eng_str(x) eng_strx(x)
2046 /* Use specific client engine automatically... ignore errors */
2049 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2052 ENGINE_load_builtin_engines();
2053 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2055 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2061 * Default is to connect to non-RI servers. When RI is more widely
2062 * deployed might change this.
2064 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2067 * Disable SSLv2 by default, callers that want to enable SSLv2 will have to
2068 * explicitly clear this option via either of SSL_CTX_clear_options() or
2069 * SSL_clear_options().
2071 ret->options |= SSL_OP_NO_SSLv2;
2075 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2083 static void SSL_COMP_free(SSL_COMP *comp)
2089 #ifndef OPENSSL_NO_BUF_FREELISTS
2090 static void ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
2092 SSL3_BUF_FREELIST_ENTRY *ent, *next;
2093 for (ent = list->head; ent; ent = next) {
2101 void SSL_CTX_free(SSL_CTX *a)
2108 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2110 REF_PRINT("SSL_CTX", a);
2116 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
2122 X509_VERIFY_PARAM_free(a->param);
2125 * Free internal session cache. However: the remove_cb() may reference
2126 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2127 * after the sessions were flushed.
2128 * As the ex_data handling routines might also touch the session cache,
2129 * the most secure solution seems to be: empty (flush) the cache, then
2130 * free ex_data, then finally free the cache.
2131 * (See ticket [openssl.org #212].)
2133 if (a->sessions != NULL)
2134 SSL_CTX_flush_sessions(a, 0);
2136 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2138 if (a->sessions != NULL)
2139 lh_SSL_SESSION_free(a->sessions);
2141 if (a->cert_store != NULL)
2142 X509_STORE_free(a->cert_store);
2143 if (a->cipher_list != NULL)
2144 sk_SSL_CIPHER_free(a->cipher_list);
2145 if (a->cipher_list_by_id != NULL)
2146 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2147 if (a->cert != NULL)
2148 ssl_cert_free(a->cert);
2149 if (a->client_CA != NULL)
2150 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2151 if (a->extra_certs != NULL)
2152 sk_X509_pop_free(a->extra_certs, X509_free);
2153 #if 0 /* This should never be done, since it
2154 * removes a global database */
2155 if (a->comp_methods != NULL)
2156 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free);
2158 a->comp_methods = NULL;
2161 #ifndef OPENSSL_NO_SRTP
2162 if (a->srtp_profiles)
2163 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2166 #ifndef OPENSSL_NO_PSK
2167 if (a->psk_identity_hint)
2168 OPENSSL_free(a->psk_identity_hint);
2170 #ifndef OPENSSL_NO_SRP
2171 SSL_CTX_SRP_CTX_free(a);
2173 #ifndef OPENSSL_NO_ENGINE
2174 if (a->client_cert_engine)
2175 ENGINE_finish(a->client_cert_engine);
2178 #ifndef OPENSSL_NO_BUF_FREELISTS
2179 if (a->wbuf_freelist)
2180 ssl_buf_freelist_free(a->wbuf_freelist);
2181 if (a->rbuf_freelist)
2182 ssl_buf_freelist_free(a->rbuf_freelist);
2184 #ifndef OPENSSL_NO_TLSEXT
2185 # ifndef OPENSSL_NO_EC
2186 if (a->tlsext_ecpointformatlist)
2187 OPENSSL_free(a->tlsext_ecpointformatlist);
2188 if (a->tlsext_ellipticcurvelist)
2189 OPENSSL_free(a->tlsext_ellipticcurvelist);
2190 # endif /* OPENSSL_NO_EC */
2191 if (a->alpn_client_proto_list != NULL)
2192 OPENSSL_free(a->alpn_client_proto_list);
2198 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2200 ctx->default_passwd_callback = cb;
2203 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2205 ctx->default_passwd_callback_userdata = u;
2208 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2209 int (*cb) (X509_STORE_CTX *, void *),
2212 ctx->app_verify_callback = cb;
2213 ctx->app_verify_arg = arg;
2216 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2217 int (*cb) (int, X509_STORE_CTX *))
2219 ctx->verify_mode = mode;
2220 ctx->default_verify_callback = cb;
2223 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2225 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2228 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2231 ssl_cert_set_cert_cb(c->cert, cb, arg);
2234 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2236 ssl_cert_set_cert_cb(s->cert, cb, arg);
2239 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2242 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2243 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2244 int rsa_tmp_export, dh_tmp_export, kl;
2245 unsigned long mask_k, mask_a, emask_k, emask_a;
2246 #ifndef OPENSSL_NO_ECDSA
2247 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2249 #ifndef OPENSSL_NO_ECDH
2250 int have_ecdh_tmp, ecdh_ok;
2252 #ifndef OPENSSL_NO_EC
2254 EVP_PKEY *ecc_pkey = NULL;
2255 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2260 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2262 #ifndef OPENSSL_NO_RSA
2263 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2264 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2265 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2267 rsa_tmp = rsa_tmp_export = 0;
2269 #ifndef OPENSSL_NO_DH
2270 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
2271 dh_tmp_export = (c->dh_tmp_cb != NULL ||
2272 (dh_tmp && DH_size(c->dh_tmp) * 8 <= kl));
2274 dh_tmp = dh_tmp_export = 0;
2277 #ifndef OPENSSL_NO_ECDH
2278 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2280 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2281 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID;
2282 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2283 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2284 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2285 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2286 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2287 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2288 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID;
2289 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2290 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2291 /* FIX THIS EAY EAY EAY */
2292 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID;
2293 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2294 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2295 #ifndef OPENSSL_NO_EC
2296 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID;
2305 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2306 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2307 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2310 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2311 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2312 mask_k |= SSL_kGOST;
2313 mask_a |= SSL_aGOST01;
2315 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2316 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2317 mask_k |= SSL_kGOST;
2318 mask_a |= SSL_aGOST94;
2321 if (rsa_enc || (rsa_tmp && rsa_sign))
2323 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2324 emask_k |= SSL_kRSA;
2327 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
2328 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign))
2330 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2331 (rsa_enc || rsa_sign || dsa_sign))
2332 emask_k |= SSL_kEDH;
2336 emask_k |= SSL_kEDH;
2344 emask_k |= SSL_kDHr;
2349 emask_k |= SSL_kDHd;
2351 if (mask_k & (SSL_kDHr | SSL_kDHd))
2354 if (rsa_enc || rsa_sign) {
2356 emask_a |= SSL_aRSA;
2361 emask_a |= SSL_aDSS;
2364 mask_a |= SSL_aNULL;
2365 emask_a |= SSL_aNULL;
2367 #ifndef OPENSSL_NO_KRB5
2368 mask_k |= SSL_kKRB5;
2369 mask_a |= SSL_aKRB5;
2370 emask_k |= SSL_kKRB5;
2371 emask_a |= SSL_aKRB5;
2375 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2376 * depending on the key usage extension.
2378 #ifndef OPENSSL_NO_EC
2379 if (have_ecc_cert) {
2380 cpk = &c->pkeys[SSL_PKEY_ECC];
2382 /* This call populates extension flags (ex_flags) */
2383 X509_check_purpose(x, -1, 0);
2384 # ifndef OPENSSL_NO_ECDH
2385 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2386 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2388 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2389 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2390 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2392 ecc_pkey = X509_get_pubkey(x);
2393 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2394 EVP_PKEY_free(ecc_pkey);
2395 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2396 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2397 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2399 # ifndef OPENSSL_NO_ECDH
2402 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2403 mask_k |= SSL_kECDHr;
2404 mask_a |= SSL_aECDH;
2405 if (ecc_pkey_size <= 163) {
2406 emask_k |= SSL_kECDHr;
2407 emask_a |= SSL_aECDH;
2411 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2412 mask_k |= SSL_kECDHe;
2413 mask_a |= SSL_aECDH;
2414 if (ecc_pkey_size <= 163) {
2415 emask_k |= SSL_kECDHe;
2416 emask_a |= SSL_aECDH;
2421 # ifndef OPENSSL_NO_ECDSA
2423 mask_a |= SSL_aECDSA;
2424 emask_a |= SSL_aECDSA;
2430 #ifndef OPENSSL_NO_ECDH
2431 if (have_ecdh_tmp) {
2432 mask_k |= SSL_kEECDH;
2433 emask_k |= SSL_kEECDH;
2437 #ifndef OPENSSL_NO_PSK
2440 emask_k |= SSL_kPSK;
2441 emask_a |= SSL_aPSK;
2446 c->export_mask_k = emask_k;
2447 c->export_mask_a = emask_a;
2451 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2452 #define ku_reject(x, usage) \
2453 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2455 #ifndef OPENSSL_NO_EC
2457 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2459 unsigned long alg_k, alg_a;
2460 EVP_PKEY *pkey = NULL;
2462 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2463 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2465 alg_k = cs->algorithm_mkey;
2466 alg_a = cs->algorithm_auth;
2468 if (SSL_C_IS_EXPORT(cs)) {
2469 /* ECDH key length in export ciphers must be <= 163 bits */
2470 pkey = X509_get_pubkey(x);
2473 keysize = EVP_PKEY_bits(pkey);
2474 EVP_PKEY_free(pkey);
2479 /* This call populates the ex_flags field correctly */
2480 X509_check_purpose(x, -1, 0);
2481 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2482 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2483 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2485 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2486 /* key usage, if present, must allow key agreement */
2487 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2488 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2489 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2492 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2493 /* signature alg must be ECDSA */
2494 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2495 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2496 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2500 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2501 /* signature alg must be RSA */
2503 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2504 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2505 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2510 if (alg_a & SSL_aECDSA) {
2511 /* key usage, if present, must allow signing */
2512 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2513 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2514 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2519 return 1; /* all checks are ok */
2524 static int ssl_get_server_cert_index(const SSL *s)
2527 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2528 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2529 idx = SSL_PKEY_RSA_SIGN;
2531 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2535 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2541 if (!s->s3 || !s->s3->tmp.new_cipher)
2543 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2545 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2547 * Broken protocol test: return last used certificate: which may mismatch
2550 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2554 i = ssl_get_server_cert_index(s);
2556 /* This may or may not be an error. */
2561 return &c->pkeys[i];
2564 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2567 unsigned long alg_a;
2571 alg_a = cipher->algorithm_auth;
2574 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2576 * Broken protocol test: use last key: which may mismatch the one
2579 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2580 idx = c->key - c->pkeys;
2584 if ((alg_a & SSL_aDSS) &&
2585 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2586 idx = SSL_PKEY_DSA_SIGN;
2587 else if (alg_a & SSL_aRSA) {
2588 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2589 idx = SSL_PKEY_RSA_SIGN;
2590 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2591 idx = SSL_PKEY_RSA_ENC;
2592 } else if ((alg_a & SSL_aECDSA) &&
2593 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2596 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2600 *pmd = c->pkeys[idx].digest;
2601 return c->pkeys[idx].privatekey;
2604 #ifndef OPENSSL_NO_TLSEXT
2605 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2606 size_t *serverinfo_length)
2610 *serverinfo_length = 0;
2613 i = ssl_get_server_cert_index(s);
2617 if (c->pkeys[i].serverinfo == NULL)
2620 *serverinfo = c->pkeys[i].serverinfo;
2621 *serverinfo_length = c->pkeys[i].serverinfo_length;
2626 void ssl_update_cache(SSL *s, int mode)
2631 * If the session_id_length is 0, we are not supposed to cache it, and it
2632 * would be rather hard to do anyway :-)
2634 if (s->session->session_id_length == 0)
2637 i = s->session_ctx->session_cache_mode;
2638 if ((i & mode) && (!s->hit)
2639 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2640 || SSL_CTX_add_session(s->session_ctx, s->session))
2641 && (s->session_ctx->new_session_cb != NULL)) {
2642 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2643 if (!s->session_ctx->new_session_cb(s, s->session))
2644 SSL_SESSION_free(s->session);
2647 /* auto flush every 255 connections */
2648 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2649 if ((((mode & SSL_SESS_CACHE_CLIENT)
2650 ? s->session_ctx->stats.sess_connect_good
2651 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2652 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2657 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2662 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2667 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2672 if (s->method != meth) {
2673 if (s->handshake_func != NULL)
2674 conn = (s->handshake_func == s->method->ssl_connect);
2676 if (s->method->version == meth->version)
2679 s->method->ssl_free(s);
2681 ret = s->method->ssl_new(s);
2685 s->handshake_func = meth->ssl_connect;
2687 s->handshake_func = meth->ssl_accept;
2692 int SSL_get_error(const SSL *s, int i)
2699 return (SSL_ERROR_NONE);
2702 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2703 * where we do encode the error
2705 if ((l = ERR_peek_error()) != 0) {
2706 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2707 return (SSL_ERROR_SYSCALL);
2709 return (SSL_ERROR_SSL);
2712 if ((i < 0) && SSL_want_read(s)) {
2713 bio = SSL_get_rbio(s);
2714 if (BIO_should_read(bio))
2715 return (SSL_ERROR_WANT_READ);
2716 else if (BIO_should_write(bio))
2718 * This one doesn't make too much sense ... We never try to write
2719 * to the rbio, and an application program where rbio and wbio
2720 * are separate couldn't even know what it should wait for.
2721 * However if we ever set s->rwstate incorrectly (so that we have
2722 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2723 * wbio *are* the same, this test works around that bug; so it
2724 * might be safer to keep it.
2726 return (SSL_ERROR_WANT_WRITE);
2727 else if (BIO_should_io_special(bio)) {
2728 reason = BIO_get_retry_reason(bio);
2729 if (reason == BIO_RR_CONNECT)
2730 return (SSL_ERROR_WANT_CONNECT);
2731 else if (reason == BIO_RR_ACCEPT)
2732 return (SSL_ERROR_WANT_ACCEPT);
2734 return (SSL_ERROR_SYSCALL); /* unknown */
2738 if ((i < 0) && SSL_want_write(s)) {
2739 bio = SSL_get_wbio(s);
2740 if (BIO_should_write(bio))
2741 return (SSL_ERROR_WANT_WRITE);
2742 else if (BIO_should_read(bio))
2744 * See above (SSL_want_read(s) with BIO_should_write(bio))
2746 return (SSL_ERROR_WANT_READ);
2747 else if (BIO_should_io_special(bio)) {
2748 reason = BIO_get_retry_reason(bio);
2749 if (reason == BIO_RR_CONNECT)
2750 return (SSL_ERROR_WANT_CONNECT);
2751 else if (reason == BIO_RR_ACCEPT)
2752 return (SSL_ERROR_WANT_ACCEPT);
2754 return (SSL_ERROR_SYSCALL);
2757 if ((i < 0) && SSL_want_x509_lookup(s)) {
2758 return (SSL_ERROR_WANT_X509_LOOKUP);
2762 if (s->version == SSL2_VERSION) {
2763 /* assume it is the socket being closed */
2764 return (SSL_ERROR_ZERO_RETURN);
2766 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2767 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2768 return (SSL_ERROR_ZERO_RETURN);
2771 return (SSL_ERROR_SYSCALL);
2774 int SSL_do_handshake(SSL *s)
2778 if (s->handshake_func == NULL) {
2779 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2783 s->method->ssl_renegotiate_check(s);
2785 if (SSL_in_init(s) || SSL_in_before(s)) {
2786 ret = s->handshake_func(s);
2792 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2793 * calls will reset it
2795 void SSL_set_accept_state(SSL *s)
2799 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2800 s->handshake_func = s->method->ssl_accept;
2801 /* clear the current cipher */
2802 ssl_clear_cipher_ctx(s);
2803 ssl_clear_hash_ctx(&s->read_hash);
2804 ssl_clear_hash_ctx(&s->write_hash);
2807 void SSL_set_connect_state(SSL *s)
2811 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2812 s->handshake_func = s->method->ssl_connect;
2813 /* clear the current cipher */
2814 ssl_clear_cipher_ctx(s);
2815 ssl_clear_hash_ctx(&s->read_hash);
2816 ssl_clear_hash_ctx(&s->write_hash);
2819 int ssl_undefined_function(SSL *s)
2821 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2825 int ssl_undefined_void_function(void)
2827 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2828 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2832 int ssl_undefined_const_function(const SSL *s)
2834 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2835 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2839 SSL_METHOD *ssl_bad_method(int ver)
2841 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2845 const char *SSL_get_version(const SSL *s)
2847 if (s->version == TLS1_2_VERSION)
2849 else if (s->version == TLS1_1_VERSION)
2851 else if (s->version == TLS1_VERSION)
2853 else if (s->version == SSL3_VERSION)
2855 else if (s->version == SSL2_VERSION)
2857 else if (s->version == DTLS1_BAD_VER)
2858 return ("DTLSv0.9");
2859 else if (s->version == DTLS1_VERSION)
2861 else if (s->version == DTLS1_2_VERSION)
2862 return ("DTLSv1.2");
2867 SSL *SSL_dup(SSL *s)
2869 STACK_OF(X509_NAME) *sk;
2874 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2877 ret->version = s->version;
2878 ret->type = s->type;
2879 ret->method = s->method;
2881 if (s->session != NULL) {
2882 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2883 SSL_copy_session_id(ret, s);
2886 * No session has been established yet, so we have to expect that
2887 * s->cert or ret->cert will be changed later -- they should not both
2888 * point to the same object, and thus we can't use
2889 * SSL_copy_session_id.
2892 ret->method->ssl_free(ret);
2893 ret->method = s->method;
2894 ret->method->ssl_new(ret);
2896 if (s->cert != NULL) {
2897 if (ret->cert != NULL) {
2898 ssl_cert_free(ret->cert);
2900 ret->cert = ssl_cert_dup(s->cert);
2901 if (ret->cert == NULL)
2905 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length);
2908 ret->options = s->options;
2909 ret->mode = s->mode;
2910 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2911 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2912 ret->msg_callback = s->msg_callback;
2913 ret->msg_callback_arg = s->msg_callback_arg;
2914 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2915 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2916 ret->generate_session_id = s->generate_session_id;
2918 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2920 ret->debug = s->debug;
2922 /* copy app data, a little dangerous perhaps */
2923 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2926 /* setup rbio, and wbio */
2927 if (s->rbio != NULL) {
2928 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2931 if (s->wbio != NULL) {
2932 if (s->wbio != s->rbio) {
2933 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2936 ret->wbio = ret->rbio;
2938 ret->rwstate = s->rwstate;
2939 ret->in_handshake = s->in_handshake;
2940 ret->handshake_func = s->handshake_func;
2941 ret->server = s->server;
2942 ret->renegotiate = s->renegotiate;
2943 ret->new_session = s->new_session;
2944 ret->quiet_shutdown = s->quiet_shutdown;
2945 ret->shutdown = s->shutdown;
2946 ret->state = s->state; /* SSL_dup does not really work at any state,
2948 ret->rstate = s->rstate;
2949 ret->init_num = 0; /* would have to copy ret->init_buf,
2950 * ret->init_msg, ret->init_num,
2954 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2956 /* dup the cipher_list and cipher_list_by_id stacks */
2957 if (s->cipher_list != NULL) {
2958 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2961 if (s->cipher_list_by_id != NULL)
2962 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2966 /* Dup the client_CA list */
2967 if (s->client_CA != NULL) {
2968 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2970 ret->client_CA = sk;
2971 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2972 xn = sk_X509_NAME_value(sk, i);
2973 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2989 void ssl_clear_cipher_ctx(SSL *s)
2991 if (s->enc_read_ctx != NULL) {
2992 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2993 OPENSSL_free(s->enc_read_ctx);
2994 s->enc_read_ctx = NULL;
2996 if (s->enc_write_ctx != NULL) {
2997 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2998 OPENSSL_free(s->enc_write_ctx);
2999 s->enc_write_ctx = NULL;
3001 #ifndef OPENSSL_NO_COMP
3002 if (s->expand != NULL) {
3003 COMP_CTX_free(s->expand);
3006 if (s->compress != NULL) {
3007 COMP_CTX_free(s->compress);
3013 X509 *SSL_get_certificate(const SSL *s)
3015 if (s->cert != NULL)
3016 return (s->cert->key->x509);
3021 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3023 if (s->cert != NULL)
3024 return (s->cert->key->privatekey);
3029 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3031 if (ctx->cert != NULL)
3032 return ctx->cert->key->x509;
3037 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3039 if (ctx->cert != NULL)
3040 return ctx->cert->key->privatekey;
3045 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3047 if ((s->session != NULL) && (s->session->cipher != NULL))
3048 return (s->session->cipher);
3052 #ifdef OPENSSL_NO_COMP
3053 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3058 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3064 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3066 if (s->compress != NULL)
3067 return (s->compress->meth);
3071 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3073 if (s->expand != NULL)
3074 return (s->expand->meth);
3079 int ssl_init_wbio_buffer(SSL *s, int push)
3083 if (s->bbio == NULL) {
3084 bbio = BIO_new(BIO_f_buffer());
3090 if (s->bbio == s->wbio)
3091 s->wbio = BIO_pop(s->wbio);
3093 (void)BIO_reset(bbio);
3094 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3095 if (!BIO_set_read_buffer_size(bbio, 1)) {
3096 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3100 if (s->wbio != bbio)
3101 s->wbio = BIO_push(bbio, s->wbio);
3103 if (s->wbio == bbio)
3104 s->wbio = BIO_pop(bbio);
3109 void ssl_free_wbio_buffer(SSL *s)
3111 if (s->bbio == NULL)
3114 if (s->bbio == s->wbio) {
3115 /* remove buffering */
3116 s->wbio = BIO_pop(s->wbio);
3117 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
3118 * adding one more preprocessor symbol */
3119 assert(s->wbio != NULL);
3126 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3128 ctx->quiet_shutdown = mode;
3131 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3133 return (ctx->quiet_shutdown);
3136 void SSL_set_quiet_shutdown(SSL *s, int mode)
3138 s->quiet_shutdown = mode;
3141 int SSL_get_quiet_shutdown(const SSL *s)
3143 return (s->quiet_shutdown);
3146 void SSL_set_shutdown(SSL *s, int mode)
3151 int SSL_get_shutdown(const SSL *s)
3153 return (s->shutdown);
3156 int SSL_version(const SSL *s)
3158 return (s->version);
3161 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3166 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3168 CERT *ocert = ssl->cert;
3169 if (ssl->ctx == ctx)
3171 #ifndef OPENSSL_NO_TLSEXT
3173 ctx = ssl->initial_ctx;
3175 ssl->cert = ssl_cert_dup(ctx->cert);
3177 /* Preserve any already negotiated parameters */
3179 ssl->cert->peer_sigalgs = ocert->peer_sigalgs;
3180 ssl->cert->peer_sigalgslen = ocert->peer_sigalgslen;
3181 ocert->peer_sigalgs = NULL;
3182 ssl->cert->ciphers_raw = ocert->ciphers_raw;
3183 ssl->cert->ciphers_rawlen = ocert->ciphers_rawlen;
3184 ocert->ciphers_raw = NULL;
3186 #ifndef OPENSSL_NO_TLSEXT
3187 ssl->cert->alpn_proposed = ocert->alpn_proposed;
3188 ssl->cert->alpn_proposed_len = ocert->alpn_proposed_len;
3189 ocert->alpn_proposed = NULL;
3190 ssl->cert->alpn_sent = ocert->alpn_sent;
3192 ssl_cert_free(ocert);
3196 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3197 * so setter APIs must prevent invalid lengths from entering the system.
3199 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3202 * If the session ID context matches that of the parent SSL_CTX,
3203 * inherit it from the new SSL_CTX as well. If however the context does
3204 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3205 * leave it unchanged.
3207 if ((ssl->ctx != NULL) &&
3208 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3209 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3210 ssl->sid_ctx_length = ctx->sid_ctx_length;
3211 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3214 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3215 if (ssl->ctx != NULL)
3216 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3222 #ifndef OPENSSL_NO_STDIO
3223 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3225 return (X509_STORE_set_default_paths(ctx->cert_store));
3228 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3231 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3235 void SSL_set_info_callback(SSL *ssl,
3236 void (*cb) (const SSL *ssl, int type, int val))
3238 ssl->info_callback = cb;
3242 * One compiler (Diab DCC) doesn't like argument names in returned function
3245 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3248 return ssl->info_callback;
3251 int SSL_state(const SSL *ssl)
3253 return (ssl->state);
3256 void SSL_set_state(SSL *ssl, int state)
3261 void SSL_set_verify_result(SSL *ssl, long arg)
3263 ssl->verify_result = arg;
3266 long SSL_get_verify_result(const SSL *ssl)
3268 return (ssl->verify_result);
3271 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3272 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3274 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3275 new_func, dup_func, free_func);
3278 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3280 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3283 void *SSL_get_ex_data(const SSL *s, int idx)
3285 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3288 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3289 CRYPTO_EX_dup *dup_func,
3290 CRYPTO_EX_free *free_func)
3292 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3293 new_func, dup_func, free_func);
3296 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3298 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3301 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3303 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3311 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3313 return (ctx->cert_store);
3316 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3318 if (ctx->cert_store != NULL)
3319 X509_STORE_free(ctx->cert_store);
3320 ctx->cert_store = store;
3323 int SSL_want(const SSL *s)
3325 return (s->rwstate);
3329 * \brief Set the callback for generating temporary RSA keys.
3330 * \param ctx the SSL context.
3331 * \param cb the callback
3334 #ifndef OPENSSL_NO_RSA
3335 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3339 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3342 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3346 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3352 * \brief The RSA temporary key callback function.
3353 * \param ssl the SSL session.
3354 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3355 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3356 * of the required key in bits.
3357 * \return the temporary RSA key.
3358 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3361 RSA *cb(SSL *ssl, int is_export, int keylength)
3367 * \brief Set the callback for generating temporary DH keys.
3368 * \param ctx the SSL context.
3369 * \param dh the callback
3372 #ifndef OPENSSL_NO_DH
3373 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3374 DH *(*dh) (SSL *ssl, int is_export,
3377 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3380 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3383 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3387 #ifndef OPENSSL_NO_ECDH
3388 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3389 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3392 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3393 (void (*)(void))ecdh);
3396 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3397 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3400 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3404 #ifndef OPENSSL_NO_PSK
3405 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3407 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3408 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3409 SSL_R_DATA_LENGTH_TOO_LONG);
3412 if (ctx->psk_identity_hint != NULL)
3413 OPENSSL_free(ctx->psk_identity_hint);
3414 if (identity_hint != NULL) {
3415 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3416 if (ctx->psk_identity_hint == NULL)
3419 ctx->psk_identity_hint = NULL;
3423 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3428 if (s->session == NULL)
3429 return 1; /* session not created yet, ignored */
3431 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3432 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3435 if (s->session->psk_identity_hint != NULL)
3436 OPENSSL_free(s->session->psk_identity_hint);
3437 if (identity_hint != NULL) {
3438 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3439 if (s->session->psk_identity_hint == NULL)
3442 s->session->psk_identity_hint = NULL;
3446 const char *SSL_get_psk_identity_hint(const SSL *s)
3448 if (s == NULL || s->session == NULL)
3450 return (s->session->psk_identity_hint);
3453 const char *SSL_get_psk_identity(const SSL *s)
3455 if (s == NULL || s->session == NULL)
3457 return (s->session->psk_identity);
3460 void SSL_set_psk_client_callback(SSL *s,
3461 unsigned int (*cb) (SSL *ssl,
3470 s->psk_client_callback = cb;
3473 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3474 unsigned int (*cb) (SSL *ssl,
3483 ctx->psk_client_callback = cb;
3486 void SSL_set_psk_server_callback(SSL *s,
3487 unsigned int (*cb) (SSL *ssl,
3488 const char *identity,
3493 s->psk_server_callback = cb;
3496 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3497 unsigned int (*cb) (SSL *ssl,
3498 const char *identity,
3503 ctx->psk_server_callback = cb;
3507 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3508 void (*cb) (int write_p, int version,
3509 int content_type, const void *buf,
3510 size_t len, SSL *ssl, void *arg))
3512 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3515 void SSL_set_msg_callback(SSL *ssl,
3516 void (*cb) (int write_p, int version,
3517 int content_type, const void *buf,
3518 size_t len, SSL *ssl, void *arg))
3520 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3524 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3525 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3526 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3530 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3532 ssl_clear_hash_ctx(hash);
3533 *hash = EVP_MD_CTX_create();
3534 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3535 EVP_MD_CTX_destroy(*hash);
3542 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3546 EVP_MD_CTX_destroy(*hash);
3550 void SSL_set_debug(SSL *s, int debug)
3555 int SSL_cache_hit(SSL *s)
3560 int SSL_is_server(SSL *s)
3565 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3566 # include "../crypto/bio/bss_file.c"
3569 IMPLEMENT_STACK_OF(SSL_CIPHER)
3570 IMPLEMENT_STACK_OF(SSL_COMP)
3571 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);