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)
192 if (s->method == NULL) {
193 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
197 if (ssl_clear_bad_session(s)) {
198 SSL_SESSION_free(s->session);
206 if (s->renegotiate) {
207 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
213 s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT);
215 s->version = s->method->version;
216 s->client_version = s->version;
217 s->rwstate = SSL_NOTHING;
219 if (s->init_buf != NULL) {
220 BUF_MEM_free(s->init_buf);
224 ssl_clear_cipher_ctx(s);
225 ssl_clear_hash_ctx(&s->read_hash);
226 ssl_clear_hash_ctx(&s->write_hash);
231 * Check to see if we were changed into a different method, if so, revert
232 * back if we are not doing session-id reuse.
234 if (!s->in_handshake && (s->session == NULL)
235 && (s->method != s->ctx->method)) {
236 s->method->ssl_free(s);
237 s->method = s->ctx->method;
238 if (!s->method->ssl_new(s))
241 s->method->ssl_clear(s);
243 RECORD_LAYER_clear(&s->rlayer);
248 /** Used to change an SSL_CTXs default SSL method type */
249 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
251 STACK_OF(SSL_CIPHER) *sk;
255 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
256 &(ctx->cipher_list_by_id),
257 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
258 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
259 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
260 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
266 SSL *SSL_new(SSL_CTX *ctx)
271 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
274 if (ctx->method == NULL) {
275 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
279 s = OPENSSL_malloc(sizeof(SSL));
282 memset(s, 0, sizeof(SSL));
284 RECORD_LAYER_init(&s->rlayer, s);
286 #ifndef OPENSSL_NO_KRB5
287 s->kssl_ctx = kssl_ctx_new();
288 #endif /* OPENSSL_NO_KRB5 */
290 s->options = ctx->options;
292 s->max_cert_list = ctx->max_cert_list;
295 * Earlier library versions used to copy the pointer to the CERT, not
296 * its contents; only when setting new parameters for the per-SSL
297 * copy, ssl_cert_new would be called (and the direct reference to
298 * the per-SSL_CTX settings would be lost, but those still were
299 * indirectly accessed for various purposes, and for that reason they
300 * used to be known as s->ctx->default_cert). Now we don't look at the
301 * SSL_CTX's CERT after having duplicated it once.
303 s->cert = ssl_cert_dup(ctx->cert);
307 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
308 s->msg_callback = ctx->msg_callback;
309 s->msg_callback_arg = ctx->msg_callback_arg;
310 s->verify_mode = ctx->verify_mode;
311 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
312 s->sid_ctx_length = ctx->sid_ctx_length;
313 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
314 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
315 s->verify_callback = ctx->default_verify_callback;
316 s->generate_session_id = ctx->generate_session_id;
318 s->param = X509_VERIFY_PARAM_new();
321 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
322 s->quiet_shutdown = ctx->quiet_shutdown;
323 s->max_send_fragment = ctx->max_send_fragment;
325 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
327 #ifndef OPENSSL_NO_TLSEXT
328 s->tlsext_debug_cb = 0;
329 s->tlsext_debug_arg = NULL;
330 s->tlsext_ticket_expected = 0;
331 s->tlsext_status_type = -1;
332 s->tlsext_status_expected = 0;
333 s->tlsext_ocsp_ids = NULL;
334 s->tlsext_ocsp_exts = NULL;
335 s->tlsext_ocsp_resp = NULL;
336 s->tlsext_ocsp_resplen = -1;
337 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
338 s->initial_ctx = ctx;
339 # ifndef OPENSSL_NO_EC
340 if (ctx->tlsext_ecpointformatlist) {
341 s->tlsext_ecpointformatlist =
342 BUF_memdup(ctx->tlsext_ecpointformatlist,
343 ctx->tlsext_ecpointformatlist_length);
344 if (!s->tlsext_ecpointformatlist)
346 s->tlsext_ecpointformatlist_length =
347 ctx->tlsext_ecpointformatlist_length;
349 if (ctx->tlsext_ellipticcurvelist) {
350 s->tlsext_ellipticcurvelist =
351 BUF_memdup(ctx->tlsext_ellipticcurvelist,
352 ctx->tlsext_ellipticcurvelist_length);
353 if (!s->tlsext_ellipticcurvelist)
355 s->tlsext_ellipticcurvelist_length =
356 ctx->tlsext_ellipticcurvelist_length;
359 # ifndef OPENSSL_NO_NEXTPROTONEG
360 s->next_proto_negotiated = NULL;
363 if (s->ctx->alpn_client_proto_list) {
364 s->alpn_client_proto_list =
365 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
366 if (s->alpn_client_proto_list == NULL)
368 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
369 s->ctx->alpn_client_proto_list_len);
370 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
374 s->verify_result = X509_V_OK;
376 s->method = ctx->method;
378 if (!s->method->ssl_new(s))
382 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
387 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
389 #ifndef OPENSSL_NO_PSK
390 s->psk_client_callback = ctx->psk_client_callback;
391 s->psk_server_callback = ctx->psk_server_callback;
397 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
401 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
402 unsigned int sid_ctx_len)
404 if (sid_ctx_len > sizeof ctx->sid_ctx) {
405 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
406 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
409 ctx->sid_ctx_length = sid_ctx_len;
410 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
415 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
416 unsigned int sid_ctx_len)
418 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
419 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
420 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
423 ssl->sid_ctx_length = sid_ctx_len;
424 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
429 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
431 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
432 ctx->generate_session_id = cb;
433 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
437 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
439 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
440 ssl->generate_session_id = cb;
441 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
445 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
449 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
450 * we can "construct" a session to give us the desired check - ie. to
451 * find if there's a session in the hash table that would conflict with
452 * any new session built out of this id/id_len and the ssl_version in use
457 if (id_len > sizeof r.session_id)
460 r.ssl_version = ssl->version;
461 r.session_id_length = id_len;
462 memcpy(r.session_id, id, id_len);
464 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
465 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
466 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
470 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
472 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
475 int SSL_set_purpose(SSL *s, int purpose)
477 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
480 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
482 return X509_VERIFY_PARAM_set_trust(s->param, trust);
485 int SSL_set_trust(SSL *s, int trust)
487 return X509_VERIFY_PARAM_set_trust(s->param, trust);
490 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
492 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
495 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
497 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
500 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
505 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
510 void SSL_certs_clear(SSL *s)
512 ssl_cert_clear_certs(s->cert);
515 void SSL_free(SSL *s)
522 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
530 fprintf(stderr, "SSL_free, bad reference count\n");
535 X509_VERIFY_PARAM_free(s->param);
536 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
538 if (s->bbio != NULL) {
539 /* If the buffering BIO is in place, pop it off */
540 if (s->bbio == s->wbio) {
541 s->wbio = BIO_pop(s->wbio);
546 BIO_free_all(s->rbio);
547 if (s->wbio != s->rbio)
548 BIO_free_all(s->wbio);
550 if (s->init_buf != NULL)
551 BUF_MEM_free(s->init_buf);
553 /* add extra stuff */
554 if (s->cipher_list != NULL)
555 sk_SSL_CIPHER_free(s->cipher_list);
556 if (s->cipher_list_by_id != NULL)
557 sk_SSL_CIPHER_free(s->cipher_list_by_id);
559 /* Make the next call work :-) */
560 if (s->session != NULL) {
561 ssl_clear_bad_session(s);
562 SSL_SESSION_free(s->session);
565 ssl_clear_cipher_ctx(s);
566 ssl_clear_hash_ctx(&s->read_hash);
567 ssl_clear_hash_ctx(&s->write_hash);
569 ssl_cert_free(s->cert);
570 /* Free up if allocated */
572 #ifndef OPENSSL_NO_TLSEXT
573 OPENSSL_free(s->tlsext_hostname);
574 SSL_CTX_free(s->initial_ctx);
575 # ifndef OPENSSL_NO_EC
576 OPENSSL_free(s->tlsext_ecpointformatlist);
577 OPENSSL_free(s->tlsext_ellipticcurvelist);
578 # endif /* OPENSSL_NO_EC */
579 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
580 if (s->tlsext_ocsp_ids)
581 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
582 OPENSSL_free(s->tlsext_ocsp_resp);
583 OPENSSL_free(s->alpn_client_proto_list);
586 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
588 if (s->method != NULL)
589 s->method->ssl_free(s);
591 RECORD_LAYER_release(&s->rlayer);
593 SSL_CTX_free(s->ctx);
595 #ifndef OPENSSL_NO_KRB5
596 if (s->kssl_ctx != NULL)
597 kssl_ctx_free(s->kssl_ctx);
598 #endif /* OPENSSL_NO_KRB5 */
600 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
601 OPENSSL_free(s->next_proto_negotiated);
604 #ifndef OPENSSL_NO_SRTP
605 if (s->srtp_profiles)
606 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
612 void SSL_set_rbio(SSL *s, BIO *rbio)
615 BIO_free_all(s->rbio);
619 void SSL_set_wbio(SSL *s, BIO *wbio)
622 * If the output buffering BIO is still in place, remove it
624 if (s->bbio != NULL) {
625 if (s->wbio == s->bbio) {
626 s->wbio = s->wbio->next_bio;
627 s->bbio->next_bio = NULL;
630 if (s->wbio != wbio && s->rbio != s->wbio)
631 BIO_free_all(s->wbio);
635 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
637 SSL_set_wbio(s, wbio);
638 SSL_set_rbio(s, rbio);
641 BIO *SSL_get_rbio(const SSL *s)
646 BIO *SSL_get_wbio(const SSL *s)
651 int SSL_get_fd(const SSL *s)
653 return (SSL_get_rfd(s));
656 int SSL_get_rfd(const SSL *s)
662 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
668 int SSL_get_wfd(const SSL *s)
674 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
680 #ifndef OPENSSL_NO_SOCK
681 int SSL_set_fd(SSL *s, int fd)
686 bio = BIO_new(BIO_s_socket());
689 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
692 BIO_set_fd(bio, fd, BIO_NOCLOSE);
693 SSL_set_bio(s, bio, bio);
699 int SSL_set_wfd(SSL *s, int fd)
704 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
705 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
706 bio = BIO_new(BIO_s_socket());
709 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
712 BIO_set_fd(bio, fd, BIO_NOCLOSE);
713 SSL_set_bio(s, SSL_get_rbio(s), bio);
715 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
721 int SSL_set_rfd(SSL *s, int fd)
726 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
727 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
728 bio = BIO_new(BIO_s_socket());
731 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
734 BIO_set_fd(bio, fd, BIO_NOCLOSE);
735 SSL_set_bio(s, bio, SSL_get_wbio(s));
737 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
744 /* return length of latest Finished message we sent, copy to 'buf' */
745 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
750 ret = s->s3->tmp.finish_md_len;
753 memcpy(buf, s->s3->tmp.finish_md, count);
758 /* return length of latest Finished message we expected, copy to 'buf' */
759 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
764 ret = s->s3->tmp.peer_finish_md_len;
767 memcpy(buf, s->s3->tmp.peer_finish_md, count);
772 int SSL_get_verify_mode(const SSL *s)
774 return (s->verify_mode);
777 int SSL_get_verify_depth(const SSL *s)
779 return X509_VERIFY_PARAM_get_depth(s->param);
782 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
783 return (s->verify_callback);
786 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
788 return (ctx->verify_mode);
791 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
793 return X509_VERIFY_PARAM_get_depth(ctx->param);
796 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
797 return (ctx->default_verify_callback);
800 void SSL_set_verify(SSL *s, int mode,
801 int (*callback) (int ok, X509_STORE_CTX *ctx))
803 s->verify_mode = mode;
804 if (callback != NULL)
805 s->verify_callback = callback;
808 void SSL_set_verify_depth(SSL *s, int depth)
810 X509_VERIFY_PARAM_set_depth(s->param, depth);
813 void SSL_set_read_ahead(SSL *s, int yes)
815 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
818 int SSL_get_read_ahead(const SSL *s)
820 return RECORD_LAYER_get_read_ahead(&s->rlayer);
823 int SSL_pending(const SSL *s)
826 * SSL_pending cannot work properly if read-ahead is enabled
827 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
828 * impossible to fix since SSL_pending cannot report errors that may be
829 * observed while scanning the new data. (Note that SSL_pending() is
830 * often used as a boolean value, so we'd better not return -1.)
832 return (s->method->ssl_pending(s));
835 X509 *SSL_get_peer_certificate(const SSL *s)
839 if ((s == NULL) || (s->session == NULL))
842 r = s->session->peer;
847 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
852 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
856 if ((s == NULL) || (s->session == NULL)
857 || (s->session->sess_cert == NULL))
860 r = s->session->sess_cert->cert_chain;
863 * If we are a client, cert_chain includes the peer's own certificate; if
864 * we are a server, it does not.
871 * Now in theory, since the calling process own 't' it should be safe to
872 * modify. We need to be able to read f without being hassled
874 int SSL_copy_session_id(SSL *t, const SSL *f)
876 /* Do we need to to SSL locking? */
877 if (!SSL_set_session(t, SSL_get_session(f))) {
882 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
884 if (t->method != f->method) {
885 t->method->ssl_free(t); /* cleanup current */
886 t->method = f->method; /* change method */
887 t->method->ssl_new(t); /* setup new */
890 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
891 ssl_cert_free(t->cert);
893 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
900 /* Fix this so it checks all the valid key/cert options */
901 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
904 (ctx->cert->key->x509 == NULL)) {
905 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
906 SSL_R_NO_CERTIFICATE_ASSIGNED);
909 if (ctx->cert->key->privatekey == NULL) {
910 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
911 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
914 return (X509_check_private_key
915 (ctx->cert->key->x509, ctx->cert->key->privatekey));
918 /* Fix this function so that it takes an optional type parameter */
919 int SSL_check_private_key(const SSL *ssl)
922 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
925 if (ssl->cert->key->x509 == NULL) {
926 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
929 if (ssl->cert->key->privatekey == NULL) {
930 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
933 return (X509_check_private_key(ssl->cert->key->x509,
934 ssl->cert->key->privatekey));
937 int SSL_accept(SSL *s)
939 if (s->handshake_func == 0)
940 /* Not properly initialized yet */
941 SSL_set_accept_state(s);
943 return (s->method->ssl_accept(s));
946 int SSL_connect(SSL *s)
948 if (s->handshake_func == 0)
949 /* Not properly initialized yet */
950 SSL_set_connect_state(s);
952 return (s->method->ssl_connect(s));
955 long SSL_get_default_timeout(const SSL *s)
957 return (s->method->get_timeout());
960 int SSL_read(SSL *s, void *buf, int num)
962 if (s->handshake_func == 0) {
963 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
967 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
968 s->rwstate = SSL_NOTHING;
971 return (s->method->ssl_read(s, buf, num));
974 int SSL_peek(SSL *s, void *buf, int num)
976 if (s->handshake_func == 0) {
977 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
981 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
984 return (s->method->ssl_peek(s, buf, num));
987 int SSL_write(SSL *s, const void *buf, int num)
989 if (s->handshake_func == 0) {
990 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
994 if (s->shutdown & SSL_SENT_SHUTDOWN) {
995 s->rwstate = SSL_NOTHING;
996 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
999 return (s->method->ssl_write(s, buf, num));
1002 int SSL_shutdown(SSL *s)
1005 * Note that this function behaves differently from what one might
1006 * expect. Return values are 0 for no success (yet), 1 for success; but
1007 * calling it once is usually not enough, even if blocking I/O is used
1008 * (see ssl3_shutdown).
1011 if (s->handshake_func == 0) {
1012 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1016 if ((s != NULL) && !SSL_in_init(s))
1017 return (s->method->ssl_shutdown(s));
1022 int SSL_renegotiate(SSL *s)
1024 if (s->renegotiate == 0)
1029 return (s->method->ssl_renegotiate(s));
1032 int SSL_renegotiate_abbreviated(SSL *s)
1034 if (s->renegotiate == 0)
1039 return (s->method->ssl_renegotiate(s));
1042 int SSL_renegotiate_pending(SSL *s)
1045 * becomes true when negotiation is requested; false again once a
1046 * handshake has finished
1048 return (s->renegotiate != 0);
1051 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1056 case SSL_CTRL_GET_READ_AHEAD:
1057 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1058 case SSL_CTRL_SET_READ_AHEAD:
1059 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1060 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1063 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1064 s->msg_callback_arg = parg;
1067 case SSL_CTRL_OPTIONS:
1068 return (s->options |= larg);
1069 case SSL_CTRL_CLEAR_OPTIONS:
1070 return (s->options &= ~larg);
1072 return (s->mode |= larg);
1073 case SSL_CTRL_CLEAR_MODE:
1074 return (s->mode &= ~larg);
1075 case SSL_CTRL_GET_MAX_CERT_LIST:
1076 return (s->max_cert_list);
1077 case SSL_CTRL_SET_MAX_CERT_LIST:
1078 l = s->max_cert_list;
1079 s->max_cert_list = larg;
1081 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1082 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1084 s->max_send_fragment = larg;
1086 case SSL_CTRL_GET_RI_SUPPORT:
1088 return s->s3->send_connection_binding;
1091 case SSL_CTRL_CERT_FLAGS:
1092 return (s->cert->cert_flags |= larg);
1093 case SSL_CTRL_CLEAR_CERT_FLAGS:
1094 return (s->cert->cert_flags &= ~larg);
1096 case SSL_CTRL_GET_RAW_CIPHERLIST:
1098 if (s->cert->ciphers_raw == NULL)
1100 *(unsigned char **)parg = s->cert->ciphers_raw;
1101 return (int)s->cert->ciphers_rawlen;
1103 return ssl_put_cipher_by_char(s, NULL, NULL);
1104 case SSL_CTRL_GET_EXTMS_SUPPORT:
1105 if (!s->session || SSL_in_init(s) || s->in_handshake)
1107 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1112 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1116 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1119 case SSL_CTRL_SET_MSG_CALLBACK:
1120 s->msg_callback = (void (*)
1121 (int write_p, int version, int content_type,
1122 const void *buf, size_t len, SSL *ssl,
1127 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1131 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1133 return ctx->sessions;
1136 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1139 /* For some cases with ctx == NULL perform syntax checks */
1142 #ifndef OPENSSL_NO_EC
1143 case SSL_CTRL_SET_CURVES_LIST:
1144 return tls1_set_curves_list(NULL, NULL, parg);
1146 case SSL_CTRL_SET_SIGALGS_LIST:
1147 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1148 return tls1_set_sigalgs_list(NULL, parg, 0);
1155 case SSL_CTRL_GET_READ_AHEAD:
1156 return (ctx->read_ahead);
1157 case SSL_CTRL_SET_READ_AHEAD:
1158 l = ctx->read_ahead;
1159 ctx->read_ahead = larg;
1162 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1163 ctx->msg_callback_arg = parg;
1166 case SSL_CTRL_GET_MAX_CERT_LIST:
1167 return (ctx->max_cert_list);
1168 case SSL_CTRL_SET_MAX_CERT_LIST:
1169 l = ctx->max_cert_list;
1170 ctx->max_cert_list = larg;
1173 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1174 l = ctx->session_cache_size;
1175 ctx->session_cache_size = larg;
1177 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1178 return (ctx->session_cache_size);
1179 case SSL_CTRL_SET_SESS_CACHE_MODE:
1180 l = ctx->session_cache_mode;
1181 ctx->session_cache_mode = larg;
1183 case SSL_CTRL_GET_SESS_CACHE_MODE:
1184 return (ctx->session_cache_mode);
1186 case SSL_CTRL_SESS_NUMBER:
1187 return (lh_SSL_SESSION_num_items(ctx->sessions));
1188 case SSL_CTRL_SESS_CONNECT:
1189 return (ctx->stats.sess_connect);
1190 case SSL_CTRL_SESS_CONNECT_GOOD:
1191 return (ctx->stats.sess_connect_good);
1192 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1193 return (ctx->stats.sess_connect_renegotiate);
1194 case SSL_CTRL_SESS_ACCEPT:
1195 return (ctx->stats.sess_accept);
1196 case SSL_CTRL_SESS_ACCEPT_GOOD:
1197 return (ctx->stats.sess_accept_good);
1198 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1199 return (ctx->stats.sess_accept_renegotiate);
1200 case SSL_CTRL_SESS_HIT:
1201 return (ctx->stats.sess_hit);
1202 case SSL_CTRL_SESS_CB_HIT:
1203 return (ctx->stats.sess_cb_hit);
1204 case SSL_CTRL_SESS_MISSES:
1205 return (ctx->stats.sess_miss);
1206 case SSL_CTRL_SESS_TIMEOUTS:
1207 return (ctx->stats.sess_timeout);
1208 case SSL_CTRL_SESS_CACHE_FULL:
1209 return (ctx->stats.sess_cache_full);
1210 case SSL_CTRL_OPTIONS:
1211 return (ctx->options |= larg);
1212 case SSL_CTRL_CLEAR_OPTIONS:
1213 return (ctx->options &= ~larg);
1215 return (ctx->mode |= larg);
1216 case SSL_CTRL_CLEAR_MODE:
1217 return (ctx->mode &= ~larg);
1218 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1219 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1221 ctx->max_send_fragment = larg;
1223 case SSL_CTRL_CERT_FLAGS:
1224 return (ctx->cert->cert_flags |= larg);
1225 case SSL_CTRL_CLEAR_CERT_FLAGS:
1226 return (ctx->cert->cert_flags &= ~larg);
1228 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1232 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1235 case SSL_CTRL_SET_MSG_CALLBACK:
1236 ctx->msg_callback = (void (*)
1237 (int write_p, int version, int content_type,
1238 const void *buf, size_t len, SSL *ssl,
1243 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1247 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1255 return ((l > 0) ? 1 : -1);
1258 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1259 const SSL_CIPHER *const *bp)
1263 l = (*ap)->id - (*bp)->id;
1267 return ((l > 0) ? 1 : -1);
1270 /** return a STACK of the ciphers available for the SSL and in order of
1272 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1275 if (s->cipher_list != NULL) {
1276 return (s->cipher_list);
1277 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1278 return (s->ctx->cipher_list);
1284 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1286 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1288 ciphers = SSL_get_ciphers(s);
1291 ssl_set_client_disabled(s);
1292 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1293 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1294 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1296 sk = sk_SSL_CIPHER_new_null();
1299 if (!sk_SSL_CIPHER_push(sk, c)) {
1300 sk_SSL_CIPHER_free(sk);
1308 /** return a STACK of the ciphers available for the SSL and in order of
1310 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1313 if (s->cipher_list_by_id != NULL) {
1314 return (s->cipher_list_by_id);
1315 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1316 return (s->ctx->cipher_list_by_id);
1322 /** The old interface to get the same thing as SSL_get_ciphers() */
1323 const char *SSL_get_cipher_list(const SSL *s, int n)
1326 STACK_OF(SSL_CIPHER) *sk;
1330 sk = SSL_get_ciphers(s);
1331 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1333 c = sk_SSL_CIPHER_value(sk, n);
1339 /** specify the ciphers to be used by default by the SSL_CTX */
1340 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1342 STACK_OF(SSL_CIPHER) *sk;
1344 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1345 &ctx->cipher_list_by_id, str, ctx->cert);
1347 * ssl_create_cipher_list may return an empty stack if it was unable to
1348 * find a cipher matching the given rule string (for example if the rule
1349 * string specifies a cipher which has been disabled). This is not an
1350 * error as far as ssl_create_cipher_list is concerned, and hence
1351 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1355 else if (sk_SSL_CIPHER_num(sk) == 0) {
1356 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1362 /** specify the ciphers to be used by the SSL */
1363 int SSL_set_cipher_list(SSL *s, const char *str)
1365 STACK_OF(SSL_CIPHER) *sk;
1367 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1368 &s->cipher_list_by_id, str, s->cert);
1369 /* see comment in SSL_CTX_set_cipher_list */
1372 else if (sk_SSL_CIPHER_num(sk) == 0) {
1373 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1379 /* works well for SSLv2, not so good for SSLv3 */
1380 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1383 STACK_OF(SSL_CIPHER) *sk;
1387 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1391 sk = s->session->ciphers;
1393 if (sk_SSL_CIPHER_num(sk) == 0)
1396 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1399 c = sk_SSL_CIPHER_value(sk, i);
1400 n = strlen(c->name);
1416 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1418 int (*put_cb) (const SSL_CIPHER *,
1424 int empty_reneg_info_scsv = !s->renegotiate;
1425 /* Set disabled masks for this session */
1426 ssl_set_client_disabled(s);
1432 put_cb = s->method->put_cipher_by_char;
1434 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1435 c = sk_SSL_CIPHER_value(sk, i);
1436 /* Skip disabled ciphers */
1437 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1439 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1440 if (c->id == SSL3_CK_SCSV) {
1441 if (!empty_reneg_info_scsv)
1444 empty_reneg_info_scsv = 0;
1451 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1455 if (empty_reneg_info_scsv) {
1456 static SSL_CIPHER scsv = {
1457 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1459 j = put_cb(&scsv, p);
1461 #ifdef OPENSSL_RI_DEBUG
1463 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1466 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1467 static SSL_CIPHER scsv = {
1468 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1470 j = put_cb(&scsv, p);
1478 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1480 STACK_OF(SSL_CIPHER) **skp)
1482 const SSL_CIPHER *c;
1483 STACK_OF(SSL_CIPHER) *sk;
1487 s->s3->send_connection_binding = 0;
1489 n = ssl_put_cipher_by_char(s, NULL, NULL);
1490 if (n == 0 || (num % n) != 0) {
1491 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1492 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1495 if ((skp == NULL) || (*skp == NULL))
1496 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1499 sk_SSL_CIPHER_zero(sk);
1502 if (s->cert->ciphers_raw)
1503 OPENSSL_free(s->cert->ciphers_raw);
1504 s->cert->ciphers_raw = BUF_memdup(p, num);
1505 if (s->cert->ciphers_raw == NULL) {
1506 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1509 s->cert->ciphers_rawlen = (size_t)num;
1511 for (i = 0; i < num; i += n) {
1512 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1513 if (s->s3 && (n != 3 || !p[0]) &&
1514 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1515 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1516 /* SCSV fatal if renegotiating */
1517 if (s->renegotiate) {
1518 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1519 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1520 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1523 s->s3->send_connection_binding = 1;
1525 #ifdef OPENSSL_RI_DEBUG
1526 fprintf(stderr, "SCSV received by server\n");
1531 /* Check for TLS_FALLBACK_SCSV */
1532 if ((n != 3 || !p[0]) &&
1533 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1534 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1536 * The SCSV indicates that the client previously tried a higher
1537 * version. Fail if the current version is an unexpected
1540 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1541 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1542 SSL_R_INAPPROPRIATE_FALLBACK);
1544 ssl3_send_alert(s, SSL3_AL_FATAL,
1545 SSL_AD_INAPPROPRIATE_FALLBACK);
1552 c = ssl_get_cipher_by_char(s, p);
1555 if (!sk_SSL_CIPHER_push(sk, c)) {
1556 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1566 if ((skp == NULL) || (*skp == NULL))
1567 sk_SSL_CIPHER_free(sk);
1571 #ifndef OPENSSL_NO_TLSEXT
1572 /** return a servername extension value if provided in Client Hello, or NULL.
1573 * So far, only host_name types are defined (RFC 3546).
1576 const char *SSL_get_servername(const SSL *s, const int type)
1578 if (type != TLSEXT_NAMETYPE_host_name)
1581 return s->session && !s->tlsext_hostname ?
1582 s->session->tlsext_hostname : s->tlsext_hostname;
1585 int SSL_get_servername_type(const SSL *s)
1588 && (!s->tlsext_hostname ? s->session->
1589 tlsext_hostname : s->tlsext_hostname))
1590 return TLSEXT_NAMETYPE_host_name;
1595 * SSL_select_next_proto implements the standard protocol selection. It is
1596 * expected that this function is called from the callback set by
1597 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1598 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1599 * not included in the length. A byte string of length 0 is invalid. No byte
1600 * string may be truncated. The current, but experimental algorithm for
1601 * selecting the protocol is: 1) If the server doesn't support NPN then this
1602 * is indicated to the callback. In this case, the client application has to
1603 * abort the connection or have a default application level protocol. 2) If
1604 * the server supports NPN, but advertises an empty list then the client
1605 * selects the first protcol in its list, but indicates via the API that this
1606 * fallback case was enacted. 3) Otherwise, the client finds the first
1607 * protocol in the server's list that it supports and selects this protocol.
1608 * This is because it's assumed that the server has better information about
1609 * which protocol a client should use. 4) If the client doesn't support any
1610 * of the server's advertised protocols, then this is treated the same as
1611 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1612 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1614 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1615 const unsigned char *server,
1616 unsigned int server_len,
1617 const unsigned char *client,
1618 unsigned int client_len)
1621 const unsigned char *result;
1622 int status = OPENSSL_NPN_UNSUPPORTED;
1625 * For each protocol in server preference order, see if we support it.
1627 for (i = 0; i < server_len;) {
1628 for (j = 0; j < client_len;) {
1629 if (server[i] == client[j] &&
1630 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1631 /* We found a match */
1632 result = &server[i];
1633 status = OPENSSL_NPN_NEGOTIATED;
1643 /* There's no overlap between our protocols and the server's list. */
1645 status = OPENSSL_NPN_NO_OVERLAP;
1648 *out = (unsigned char *)result + 1;
1649 *outlen = result[0];
1653 # ifndef OPENSSL_NO_NEXTPROTONEG
1655 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1656 * client's requested protocol for this connection and returns 0. If the
1657 * client didn't request any protocol, then *data is set to NULL. Note that
1658 * the client can request any protocol it chooses. The value returned from
1659 * this function need not be a member of the list of supported protocols
1660 * provided by the callback.
1662 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1665 *data = s->next_proto_negotiated;
1669 *len = s->next_proto_negotiated_len;
1674 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1675 * a TLS server needs a list of supported protocols for Next Protocol
1676 * Negotiation. The returned list must be in wire format. The list is
1677 * returned by setting |out| to point to it and |outlen| to its length. This
1678 * memory will not be modified, but one should assume that the SSL* keeps a
1679 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1680 * wishes to advertise. Otherwise, no such extension will be included in the
1683 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1684 int (*cb) (SSL *ssl,
1687 unsigned int *outlen,
1688 void *arg), void *arg)
1690 ctx->next_protos_advertised_cb = cb;
1691 ctx->next_protos_advertised_cb_arg = arg;
1695 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1696 * client needs to select a protocol from the server's provided list. |out|
1697 * must be set to point to the selected protocol (which may be within |in|).
1698 * The length of the protocol name must be written into |outlen|. The
1699 * server's advertised protocols are provided in |in| and |inlen|. The
1700 * callback can assume that |in| is syntactically valid. The client must
1701 * select a protocol. It is fatal to the connection if this callback returns
1702 * a value other than SSL_TLSEXT_ERR_OK.
1704 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1705 int (*cb) (SSL *s, unsigned char **out,
1706 unsigned char *outlen,
1707 const unsigned char *in,
1709 void *arg), void *arg)
1711 ctx->next_proto_select_cb = cb;
1712 ctx->next_proto_select_cb_arg = arg;
1717 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1718 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1719 * length-prefixed strings). Returns 0 on success.
1721 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1722 unsigned protos_len)
1724 if (ctx->alpn_client_proto_list)
1725 OPENSSL_free(ctx->alpn_client_proto_list);
1727 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1728 if (!ctx->alpn_client_proto_list)
1730 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1731 ctx->alpn_client_proto_list_len = protos_len;
1737 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1738 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1739 * length-prefixed strings). Returns 0 on success.
1741 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1742 unsigned protos_len)
1744 if (ssl->alpn_client_proto_list)
1745 OPENSSL_free(ssl->alpn_client_proto_list);
1747 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1748 if (!ssl->alpn_client_proto_list)
1750 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1751 ssl->alpn_client_proto_list_len = protos_len;
1757 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1758 * called during ClientHello processing in order to select an ALPN protocol
1759 * from the client's list of offered protocols.
1761 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1762 int (*cb) (SSL *ssl,
1763 const unsigned char **out,
1764 unsigned char *outlen,
1765 const unsigned char *in,
1767 void *arg), void *arg)
1769 ctx->alpn_select_cb = cb;
1770 ctx->alpn_select_cb_arg = arg;
1774 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1775 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1776 * (not including the leading length-prefix byte). If the server didn't
1777 * respond with a negotiated protocol then |*len| will be zero.
1779 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1784 *data = ssl->s3->alpn_selected;
1788 *len = ssl->s3->alpn_selected_len;
1791 #endif /* !OPENSSL_NO_TLSEXT */
1793 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1794 const char *label, size_t llen,
1795 const unsigned char *p, size_t plen,
1798 if (s->version < TLS1_VERSION)
1801 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1806 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1811 ((unsigned int)a->session_id[0]) |
1812 ((unsigned int)a->session_id[1] << 8L) |
1813 ((unsigned long)a->session_id[2] << 16L) |
1814 ((unsigned long)a->session_id[3] << 24L);
1819 * NB: If this function (or indeed the hash function which uses a sort of
1820 * coarser function than this one) is changed, ensure
1821 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1822 * being able to construct an SSL_SESSION that will collide with any existing
1823 * session with a matching session ID.
1825 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1827 if (a->ssl_version != b->ssl_version)
1829 if (a->session_id_length != b->session_id_length)
1831 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1835 * These wrapper functions should remain rather than redeclaring
1836 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1837 * variable. The reason is that the functions aren't static, they're exposed
1840 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1841 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1843 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1845 SSL_CTX *ret = NULL;
1848 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1852 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1853 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1857 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1858 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1861 ret = OPENSSL_malloc(sizeof(SSL_CTX));
1865 memset(ret, 0, sizeof(SSL_CTX));
1869 ret->cert_store = NULL;
1870 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1871 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1872 ret->session_cache_head = NULL;
1873 ret->session_cache_tail = NULL;
1875 /* We take the system default */
1876 ret->session_timeout = meth->get_timeout();
1878 ret->new_session_cb = 0;
1879 ret->remove_session_cb = 0;
1880 ret->get_session_cb = 0;
1881 ret->generate_session_id = 0;
1883 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1885 ret->references = 1;
1886 ret->quiet_shutdown = 0;
1887 ret->info_callback = NULL;
1888 ret->app_verify_callback = 0;
1889 ret->app_verify_arg = NULL;
1890 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1891 ret->read_ahead = 0;
1892 ret->msg_callback = 0;
1893 ret->msg_callback_arg = NULL;
1894 ret->verify_mode = SSL_VERIFY_NONE;
1895 ret->sid_ctx_length = 0;
1896 ret->default_verify_callback = NULL;
1897 if ((ret->cert = ssl_cert_new()) == NULL)
1900 ret->default_passwd_callback = 0;
1901 ret->default_passwd_callback_userdata = NULL;
1902 ret->client_cert_cb = 0;
1903 ret->app_gen_cookie_cb = 0;
1904 ret->app_verify_cookie_cb = 0;
1906 ret->sessions = lh_SSL_SESSION_new();
1907 if (ret->sessions == NULL)
1909 ret->cert_store = X509_STORE_new();
1910 if (ret->cert_store == NULL)
1913 if (!ssl_create_cipher_list(ret->method,
1914 &ret->cipher_list, &ret->cipher_list_by_id,
1915 SSL_DEFAULT_CIPHER_LIST, ret->cert)
1916 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1917 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1921 ret->param = X509_VERIFY_PARAM_new();
1925 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1926 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1929 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1930 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1934 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1937 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1939 ret->extra_certs = NULL;
1940 /* No compression for DTLS */
1941 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1942 ret->comp_methods = SSL_COMP_get_compression_methods();
1944 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1946 #ifndef OPENSSL_NO_TLSEXT
1947 ret->tlsext_servername_callback = 0;
1948 ret->tlsext_servername_arg = NULL;
1949 /* Setup RFC4507 ticket keys */
1950 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1951 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1952 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1953 ret->options |= SSL_OP_NO_TICKET;
1955 ret->tlsext_status_cb = 0;
1956 ret->tlsext_status_arg = NULL;
1958 # ifndef OPENSSL_NO_NEXTPROTONEG
1959 ret->next_protos_advertised_cb = 0;
1960 ret->next_proto_select_cb = 0;
1963 #ifndef OPENSSL_NO_PSK
1964 ret->psk_identity_hint = NULL;
1965 ret->psk_client_callback = NULL;
1966 ret->psk_server_callback = NULL;
1968 #ifndef OPENSSL_NO_SRP
1969 if (!SSL_CTX_SRP_CTX_init(ret))
1972 #ifndef OPENSSL_NO_ENGINE
1973 ret->client_cert_engine = NULL;
1974 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1975 # define eng_strx(x) #x
1976 # define eng_str(x) eng_strx(x)
1977 /* Use specific client engine automatically... ignore errors */
1980 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1983 ENGINE_load_builtin_engines();
1984 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1986 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1992 * Default is to connect to non-RI servers. When RI is more widely
1993 * deployed might change this.
1995 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1999 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2005 void SSL_CTX_free(SSL_CTX *a)
2012 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2014 REF_PRINT("SSL_CTX", a);
2020 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
2025 X509_VERIFY_PARAM_free(a->param);
2028 * Free internal session cache. However: the remove_cb() may reference
2029 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2030 * after the sessions were flushed.
2031 * As the ex_data handling routines might also touch the session cache,
2032 * the most secure solution seems to be: empty (flush) the cache, then
2033 * free ex_data, then finally free the cache.
2034 * (See ticket [openssl.org #212].)
2036 if (a->sessions != NULL)
2037 SSL_CTX_flush_sessions(a, 0);
2039 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2041 if (a->sessions != NULL)
2042 lh_SSL_SESSION_free(a->sessions);
2044 X509_STORE_free(a->cert_store);
2045 if (a->cipher_list != NULL)
2046 sk_SSL_CIPHER_free(a->cipher_list);
2047 if (a->cipher_list_by_id != NULL)
2048 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2049 ssl_cert_free(a->cert);
2050 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2051 sk_X509_pop_free(a->extra_certs, X509_free);
2052 a->comp_methods = NULL;
2054 #ifndef OPENSSL_NO_SRTP
2055 if (a->srtp_profiles)
2056 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2059 #ifndef OPENSSL_NO_PSK
2060 if (a->psk_identity_hint)
2061 OPENSSL_free(a->psk_identity_hint);
2063 #ifndef OPENSSL_NO_SRP
2064 SSL_CTX_SRP_CTX_free(a);
2066 #ifndef OPENSSL_NO_ENGINE
2067 if (a->client_cert_engine)
2068 ENGINE_finish(a->client_cert_engine);
2071 #ifndef OPENSSL_NO_TLSEXT
2072 # ifndef OPENSSL_NO_EC
2073 if (a->tlsext_ecpointformatlist)
2074 OPENSSL_free(a->tlsext_ecpointformatlist);
2075 if (a->tlsext_ellipticcurvelist)
2076 OPENSSL_free(a->tlsext_ellipticcurvelist);
2077 # endif /* OPENSSL_NO_EC */
2078 if (a->alpn_client_proto_list != NULL)
2079 OPENSSL_free(a->alpn_client_proto_list);
2085 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2087 ctx->default_passwd_callback = cb;
2090 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2092 ctx->default_passwd_callback_userdata = u;
2095 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2096 int (*cb) (X509_STORE_CTX *, void *),
2099 ctx->app_verify_callback = cb;
2100 ctx->app_verify_arg = arg;
2103 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2104 int (*cb) (int, X509_STORE_CTX *))
2106 ctx->verify_mode = mode;
2107 ctx->default_verify_callback = cb;
2110 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2112 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2115 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2118 ssl_cert_set_cert_cb(c->cert, cb, arg);
2121 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2123 ssl_cert_set_cert_cb(s->cert, cb, arg);
2126 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2129 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2130 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2131 int rsa_tmp_export, dh_tmp_export, kl;
2132 unsigned long mask_k, mask_a, emask_k, emask_a;
2133 #ifndef OPENSSL_NO_EC
2134 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2135 int have_ecdh_tmp, ecdh_ok;
2137 EVP_PKEY *ecc_pkey = NULL;
2138 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2143 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2145 #ifndef OPENSSL_NO_RSA
2146 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2147 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2148 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2150 rsa_tmp = rsa_tmp_export = 0;
2152 #ifndef OPENSSL_NO_DH
2153 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2154 dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2156 && DH_size(c->dh_tmp) * 8 <= kl));
2158 dh_tmp = dh_tmp_export = 0;
2161 #ifndef OPENSSL_NO_EC
2162 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2164 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2165 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID;
2166 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2167 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2168 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2169 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2170 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2171 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2172 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID;
2173 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2174 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2175 /* FIX THIS EAY EAY EAY */
2176 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID;
2177 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2178 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2179 #ifndef OPENSSL_NO_EC
2180 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID;
2189 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2190 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2191 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2194 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2195 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2196 mask_k |= SSL_kGOST;
2197 mask_a |= SSL_aGOST01;
2199 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2200 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2201 mask_k |= SSL_kGOST;
2202 mask_a |= SSL_aGOST94;
2205 if (rsa_enc || (rsa_tmp && rsa_sign))
2207 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2208 emask_k |= SSL_kRSA;
2211 emask_k |= SSL_kDHE;
2219 emask_k |= SSL_kDHr;
2224 emask_k |= SSL_kDHd;
2226 if (emask_k & (SSL_kDHr | SSL_kDHd))
2229 if (rsa_enc || rsa_sign) {
2231 emask_a |= SSL_aRSA;
2236 emask_a |= SSL_aDSS;
2239 mask_a |= SSL_aNULL;
2240 emask_a |= SSL_aNULL;
2242 #ifndef OPENSSL_NO_KRB5
2243 mask_k |= SSL_kKRB5;
2244 mask_a |= SSL_aKRB5;
2245 emask_k |= SSL_kKRB5;
2246 emask_a |= SSL_aKRB5;
2250 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2251 * depending on the key usage extension.
2253 #ifndef OPENSSL_NO_EC
2254 if (have_ecc_cert) {
2255 cpk = &c->pkeys[SSL_PKEY_ECC];
2257 /* This call populates extension flags (ex_flags) */
2258 X509_check_purpose(x, -1, 0);
2259 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2260 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2261 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2262 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2263 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2265 ecc_pkey = X509_get_pubkey(x);
2266 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2267 EVP_PKEY_free(ecc_pkey);
2268 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2269 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2270 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2274 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2275 mask_k |= SSL_kECDHr;
2276 mask_a |= SSL_aECDH;
2277 if (ecc_pkey_size <= 163) {
2278 emask_k |= SSL_kECDHr;
2279 emask_a |= SSL_aECDH;
2283 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2284 mask_k |= SSL_kECDHe;
2285 mask_a |= SSL_aECDH;
2286 if (ecc_pkey_size <= 163) {
2287 emask_k |= SSL_kECDHe;
2288 emask_a |= SSL_aECDH;
2293 mask_a |= SSL_aECDSA;
2294 emask_a |= SSL_aECDSA;
2299 #ifndef OPENSSL_NO_EC
2300 if (have_ecdh_tmp) {
2301 mask_k |= SSL_kECDHE;
2302 emask_k |= SSL_kECDHE;
2306 #ifndef OPENSSL_NO_PSK
2309 emask_k |= SSL_kPSK;
2310 emask_a |= SSL_aPSK;
2315 c->export_mask_k = emask_k;
2316 c->export_mask_a = emask_a;
2320 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2321 #define ku_reject(x, usage) \
2322 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2324 #ifndef OPENSSL_NO_EC
2326 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2328 unsigned long alg_k, alg_a;
2329 EVP_PKEY *pkey = NULL;
2331 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2332 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2334 alg_k = cs->algorithm_mkey;
2335 alg_a = cs->algorithm_auth;
2337 if (SSL_C_IS_EXPORT(cs)) {
2338 /* ECDH key length in export ciphers must be <= 163 bits */
2339 pkey = X509_get_pubkey(x);
2342 keysize = EVP_PKEY_bits(pkey);
2343 EVP_PKEY_free(pkey);
2348 /* This call populates the ex_flags field correctly */
2349 X509_check_purpose(x, -1, 0);
2350 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2351 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2352 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2354 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2355 /* key usage, if present, must allow key agreement */
2356 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2357 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2358 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2361 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2362 /* signature alg must be ECDSA */
2363 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2364 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2365 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2369 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2370 /* signature alg must be RSA */
2372 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2373 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2374 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2379 if (alg_a & SSL_aECDSA) {
2380 /* key usage, if present, must allow signing */
2381 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2382 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2383 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2388 return 1; /* all checks are ok */
2393 static int ssl_get_server_cert_index(const SSL *s)
2396 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2397 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2398 idx = SSL_PKEY_RSA_SIGN;
2400 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2404 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2410 if (!s->s3 || !s->s3->tmp.new_cipher)
2412 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2414 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2416 * Broken protocol test: return last used certificate: which may mismatch
2419 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2423 i = ssl_get_server_cert_index(s);
2425 /* This may or may not be an error. */
2430 return &c->pkeys[i];
2433 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2436 unsigned long alg_a;
2440 alg_a = cipher->algorithm_auth;
2443 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2445 * Broken protocol test: use last key: which may mismatch the one
2448 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2449 idx = c->key - c->pkeys;
2453 if ((alg_a & SSL_aDSS) &&
2454 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2455 idx = SSL_PKEY_DSA_SIGN;
2456 else if (alg_a & SSL_aRSA) {
2457 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2458 idx = SSL_PKEY_RSA_SIGN;
2459 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2460 idx = SSL_PKEY_RSA_ENC;
2461 } else if ((alg_a & SSL_aECDSA) &&
2462 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2465 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2469 *pmd = c->pkeys[idx].digest;
2470 return c->pkeys[idx].privatekey;
2473 #ifndef OPENSSL_NO_TLSEXT
2474 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2475 size_t *serverinfo_length)
2479 *serverinfo_length = 0;
2482 i = ssl_get_server_cert_index(s);
2486 if (c->pkeys[i].serverinfo == NULL)
2489 *serverinfo = c->pkeys[i].serverinfo;
2490 *serverinfo_length = c->pkeys[i].serverinfo_length;
2495 void ssl_update_cache(SSL *s, int mode)
2500 * If the session_id_length is 0, we are not supposed to cache it, and it
2501 * would be rather hard to do anyway :-)
2503 if (s->session->session_id_length == 0)
2506 i = s->session_ctx->session_cache_mode;
2507 if ((i & mode) && (!s->hit)
2508 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2509 || SSL_CTX_add_session(s->session_ctx, s->session))
2510 && (s->session_ctx->new_session_cb != NULL)) {
2511 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2512 if (!s->session_ctx->new_session_cb(s, s->session))
2513 SSL_SESSION_free(s->session);
2516 /* auto flush every 255 connections */
2517 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2518 if ((((mode & SSL_SESS_CACHE_CLIENT)
2519 ? s->session_ctx->stats.sess_connect_good
2520 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2521 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2526 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2531 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2536 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2541 if (s->method != meth) {
2542 if (s->handshake_func != NULL)
2543 conn = (s->handshake_func == s->method->ssl_connect);
2545 if (s->method->version == meth->version)
2548 s->method->ssl_free(s);
2550 ret = s->method->ssl_new(s);
2554 s->handshake_func = meth->ssl_connect;
2556 s->handshake_func = meth->ssl_accept;
2561 int SSL_get_error(const SSL *s, int i)
2568 return (SSL_ERROR_NONE);
2571 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2572 * where we do encode the error
2574 if ((l = ERR_peek_error()) != 0) {
2575 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2576 return (SSL_ERROR_SYSCALL);
2578 return (SSL_ERROR_SSL);
2581 if ((i < 0) && SSL_want_read(s)) {
2582 bio = SSL_get_rbio(s);
2583 if (BIO_should_read(bio))
2584 return (SSL_ERROR_WANT_READ);
2585 else if (BIO_should_write(bio))
2587 * This one doesn't make too much sense ... We never try to write
2588 * to the rbio, and an application program where rbio and wbio
2589 * are separate couldn't even know what it should wait for.
2590 * However if we ever set s->rwstate incorrectly (so that we have
2591 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2592 * wbio *are* the same, this test works around that bug; so it
2593 * might be safer to keep it.
2595 return (SSL_ERROR_WANT_WRITE);
2596 else if (BIO_should_io_special(bio)) {
2597 reason = BIO_get_retry_reason(bio);
2598 if (reason == BIO_RR_CONNECT)
2599 return (SSL_ERROR_WANT_CONNECT);
2600 else if (reason == BIO_RR_ACCEPT)
2601 return (SSL_ERROR_WANT_ACCEPT);
2603 return (SSL_ERROR_SYSCALL); /* unknown */
2607 if ((i < 0) && SSL_want_write(s)) {
2608 bio = SSL_get_wbio(s);
2609 if (BIO_should_write(bio))
2610 return (SSL_ERROR_WANT_WRITE);
2611 else if (BIO_should_read(bio))
2613 * See above (SSL_want_read(s) with BIO_should_write(bio))
2615 return (SSL_ERROR_WANT_READ);
2616 else if (BIO_should_io_special(bio)) {
2617 reason = BIO_get_retry_reason(bio);
2618 if (reason == BIO_RR_CONNECT)
2619 return (SSL_ERROR_WANT_CONNECT);
2620 else if (reason == BIO_RR_ACCEPT)
2621 return (SSL_ERROR_WANT_ACCEPT);
2623 return (SSL_ERROR_SYSCALL);
2626 if ((i < 0) && SSL_want_x509_lookup(s)) {
2627 return (SSL_ERROR_WANT_X509_LOOKUP);
2631 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2632 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2633 return (SSL_ERROR_ZERO_RETURN);
2635 return (SSL_ERROR_SYSCALL);
2638 int SSL_do_handshake(SSL *s)
2642 if (s->handshake_func == NULL) {
2643 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2647 s->method->ssl_renegotiate_check(s);
2649 if (SSL_in_init(s) || SSL_in_before(s)) {
2650 ret = s->handshake_func(s);
2656 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2657 * calls will reset it
2659 void SSL_set_accept_state(SSL *s)
2663 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2664 s->handshake_func = s->method->ssl_accept;
2665 /* clear the current cipher */
2666 ssl_clear_cipher_ctx(s);
2667 ssl_clear_hash_ctx(&s->read_hash);
2668 ssl_clear_hash_ctx(&s->write_hash);
2671 void SSL_set_connect_state(SSL *s)
2675 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2676 s->handshake_func = s->method->ssl_connect;
2677 /* clear the current cipher */
2678 ssl_clear_cipher_ctx(s);
2679 ssl_clear_hash_ctx(&s->read_hash);
2680 ssl_clear_hash_ctx(&s->write_hash);
2683 int ssl_undefined_function(SSL *s)
2685 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2689 int ssl_undefined_void_function(void)
2691 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2692 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2696 int ssl_undefined_const_function(const SSL *s)
2698 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2699 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2703 SSL_METHOD *ssl_bad_method(int ver)
2705 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2709 const char *SSL_get_version(const SSL *s)
2711 if (s->version == TLS1_2_VERSION)
2713 else if (s->version == TLS1_1_VERSION)
2715 else if (s->version == TLS1_VERSION)
2717 else if (s->version == SSL3_VERSION)
2719 else if (s->version == DTLS1_BAD_VER)
2720 return ("DTLSv0.9");
2721 else if (s->version == DTLS1_VERSION)
2723 else if (s->version == DTLS1_2_VERSION)
2724 return ("DTLSv1.2");
2729 SSL *SSL_dup(SSL *s)
2731 STACK_OF(X509_NAME) *sk;
2736 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2739 ret->version = s->version;
2740 ret->type = s->type;
2741 ret->method = s->method;
2743 if (s->session != NULL) {
2744 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2745 if (!SSL_copy_session_id(ret, s))
2749 * No session has been established yet, so we have to expect that
2750 * s->cert or ret->cert will be changed later -- they should not both
2751 * point to the same object, and thus we can't use
2752 * SSL_copy_session_id.
2755 ret->method->ssl_free(ret);
2756 ret->method = s->method;
2757 ret->method->ssl_new(ret);
2759 if (s->cert != NULL) {
2760 ssl_cert_free(ret->cert);
2761 ret->cert = ssl_cert_dup(s->cert);
2762 if (ret->cert == NULL)
2766 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
2770 ret->options = s->options;
2771 ret->mode = s->mode;
2772 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2773 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2774 ret->msg_callback = s->msg_callback;
2775 ret->msg_callback_arg = s->msg_callback_arg;
2776 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2777 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2778 ret->generate_session_id = s->generate_session_id;
2780 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2782 ret->debug = s->debug;
2784 /* copy app data, a little dangerous perhaps */
2785 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2788 /* setup rbio, and wbio */
2789 if (s->rbio != NULL) {
2790 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2793 if (s->wbio != NULL) {
2794 if (s->wbio != s->rbio) {
2795 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2798 ret->wbio = ret->rbio;
2800 ret->rwstate = s->rwstate;
2801 ret->in_handshake = s->in_handshake;
2802 ret->handshake_func = s->handshake_func;
2803 ret->server = s->server;
2804 ret->renegotiate = s->renegotiate;
2805 ret->new_session = s->new_session;
2806 ret->quiet_shutdown = s->quiet_shutdown;
2807 ret->shutdown = s->shutdown;
2808 ret->state = s->state; /* SSL_dup does not really work at any state,
2810 RECORD_LAYER_dup(&ret->rlayer, &s->rlayer);
2811 ret->init_num = 0; /* would have to copy ret->init_buf,
2812 * ret->init_msg, ret->init_num,
2816 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2818 /* dup the cipher_list and cipher_list_by_id stacks */
2819 if (s->cipher_list != NULL) {
2820 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2823 if (s->cipher_list_by_id != NULL)
2824 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2828 /* Dup the client_CA list */
2829 if (s->client_CA != NULL) {
2830 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2832 ret->client_CA = sk;
2833 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2834 xn = sk_X509_NAME_value(sk, i);
2835 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2850 void ssl_clear_cipher_ctx(SSL *s)
2852 if (s->enc_read_ctx != NULL) {
2853 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2854 OPENSSL_free(s->enc_read_ctx);
2855 s->enc_read_ctx = NULL;
2857 if (s->enc_write_ctx != NULL) {
2858 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2859 OPENSSL_free(s->enc_write_ctx);
2860 s->enc_write_ctx = NULL;
2862 #ifndef OPENSSL_NO_COMP
2863 COMP_CTX_free(s->expand);
2865 COMP_CTX_free(s->compress);
2870 X509 *SSL_get_certificate(const SSL *s)
2872 if (s->cert != NULL)
2873 return (s->cert->key->x509);
2878 EVP_PKEY *SSL_get_privatekey(const SSL *s)
2880 if (s->cert != NULL)
2881 return (s->cert->key->privatekey);
2886 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2888 if (ctx->cert != NULL)
2889 return ctx->cert->key->x509;
2894 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2896 if (ctx->cert != NULL)
2897 return ctx->cert->key->privatekey;
2902 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2904 if ((s->session != NULL) && (s->session->cipher != NULL))
2905 return (s->session->cipher);
2909 #ifdef OPENSSL_NO_COMP
2910 const void *SSL_get_current_compression(SSL *s)
2915 const void *SSL_get_current_expansion(SSL *s)
2921 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2923 if (s->compress != NULL)
2924 return (s->compress->meth);
2928 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2930 if (s->expand != NULL)
2931 return (s->expand->meth);
2936 int ssl_init_wbio_buffer(SSL *s, int push)
2940 if (s->bbio == NULL) {
2941 bbio = BIO_new(BIO_f_buffer());
2947 if (s->bbio == s->wbio)
2948 s->wbio = BIO_pop(s->wbio);
2950 (void)BIO_reset(bbio);
2951 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2952 if (!BIO_set_read_buffer_size(bbio, 1)) {
2953 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
2957 if (s->wbio != bbio)
2958 s->wbio = BIO_push(bbio, s->wbio);
2960 if (s->wbio == bbio)
2961 s->wbio = BIO_pop(bbio);
2966 void ssl_free_wbio_buffer(SSL *s)
2968 /* callers ensure s is never null */
2969 if (s->bbio == NULL)
2972 if (s->bbio == s->wbio) {
2973 /* remove buffering */
2974 s->wbio = BIO_pop(s->wbio);
2975 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
2976 * adding one more preprocessor symbol */
2977 assert(s->wbio != NULL);
2984 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
2986 ctx->quiet_shutdown = mode;
2989 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2991 return (ctx->quiet_shutdown);
2994 void SSL_set_quiet_shutdown(SSL *s, int mode)
2996 s->quiet_shutdown = mode;
2999 int SSL_get_quiet_shutdown(const SSL *s)
3001 return (s->quiet_shutdown);
3004 void SSL_set_shutdown(SSL *s, int mode)
3009 int SSL_get_shutdown(const SSL *s)
3011 return (s->shutdown);
3014 int SSL_version(const SSL *s)
3016 return (s->version);
3019 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3024 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3027 if (ssl->ctx == ctx)
3029 #ifndef OPENSSL_NO_TLSEXT
3031 ctx = ssl->initial_ctx;
3033 new_cert = ssl_cert_dup(ctx->cert);
3034 if (new_cert == NULL) {
3037 /* Preserve any already negotiated parameters */
3039 new_cert->peer_sigalgs = ssl->cert->peer_sigalgs;
3040 new_cert->peer_sigalgslen = ssl->cert->peer_sigalgslen;
3041 ssl->cert->peer_sigalgs = NULL;
3042 new_cert->ciphers_raw = ssl->cert->ciphers_raw;
3043 new_cert->ciphers_rawlen = ssl->cert->ciphers_rawlen;
3044 ssl->cert->ciphers_raw = NULL;
3046 ssl_cert_free(ssl->cert);
3047 ssl->cert = new_cert;
3050 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3051 * so setter APIs must prevent invalid lengths from entering the system.
3053 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3056 * If the session ID context matches that of the parent SSL_CTX,
3057 * inherit it from the new SSL_CTX as well. If however the context does
3058 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3059 * leave it unchanged.
3061 if ((ssl->ctx != NULL) &&
3062 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3063 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3064 ssl->sid_ctx_length = ctx->sid_ctx_length;
3065 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3068 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3069 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3075 #ifndef OPENSSL_NO_STDIO
3076 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3078 return (X509_STORE_set_default_paths(ctx->cert_store));
3081 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3084 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3088 void SSL_set_info_callback(SSL *ssl,
3089 void (*cb) (const SSL *ssl, int type, int val))
3091 ssl->info_callback = cb;
3095 * One compiler (Diab DCC) doesn't like argument names in returned function
3098 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3101 return ssl->info_callback;
3104 int SSL_state(const SSL *ssl)
3106 return (ssl->state);
3109 void SSL_set_state(SSL *ssl, int state)
3114 void SSL_set_verify_result(SSL *ssl, long arg)
3116 ssl->verify_result = arg;
3119 long SSL_get_verify_result(const SSL *ssl)
3121 return (ssl->verify_result);
3124 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3125 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3127 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3128 new_func, dup_func, free_func);
3131 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3133 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3136 void *SSL_get_ex_data(const SSL *s, int idx)
3138 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3141 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3142 CRYPTO_EX_dup *dup_func,
3143 CRYPTO_EX_free *free_func)
3145 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3146 new_func, dup_func, free_func);
3149 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3151 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3154 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3156 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3164 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3166 return (ctx->cert_store);
3169 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3171 X509_STORE_free(ctx->cert_store);
3172 ctx->cert_store = store;
3175 int SSL_want(const SSL *s)
3177 return (s->rwstate);
3181 * \brief Set the callback for generating temporary RSA keys.
3182 * \param ctx the SSL context.
3183 * \param cb the callback
3186 #ifndef OPENSSL_NO_RSA
3187 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3191 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3194 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3198 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3204 * \brief The RSA temporary key callback function.
3205 * \param ssl the SSL session.
3206 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3207 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3208 * of the required key in bits.
3209 * \return the temporary RSA key.
3210 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3213 RSA *cb(SSL *ssl, int is_export, int keylength)
3219 * \brief Set the callback for generating temporary DH keys.
3220 * \param ctx the SSL context.
3221 * \param dh the callback
3224 #ifndef OPENSSL_NO_DH
3225 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3226 DH *(*dh) (SSL *ssl, int is_export,
3229 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3232 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3235 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3239 #ifndef OPENSSL_NO_EC
3240 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3241 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3244 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3245 (void (*)(void))ecdh);
3248 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3249 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3252 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3256 #ifndef OPENSSL_NO_PSK
3257 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3259 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3260 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3261 SSL_R_DATA_LENGTH_TOO_LONG);
3264 if (ctx->psk_identity_hint != NULL)
3265 OPENSSL_free(ctx->psk_identity_hint);
3266 if (identity_hint != NULL) {
3267 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3268 if (ctx->psk_identity_hint == NULL)
3271 ctx->psk_identity_hint = NULL;
3275 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3280 if (s->session == NULL)
3281 return 1; /* session not created yet, ignored */
3283 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3284 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3287 if (s->session->psk_identity_hint != NULL)
3288 OPENSSL_free(s->session->psk_identity_hint);
3289 if (identity_hint != NULL) {
3290 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3291 if (s->session->psk_identity_hint == NULL)
3294 s->session->psk_identity_hint = NULL;
3298 const char *SSL_get_psk_identity_hint(const SSL *s)
3300 if (s == NULL || s->session == NULL)
3302 return (s->session->psk_identity_hint);
3305 const char *SSL_get_psk_identity(const SSL *s)
3307 if (s == NULL || s->session == NULL)
3309 return (s->session->psk_identity);
3312 void SSL_set_psk_client_callback(SSL *s,
3313 unsigned int (*cb) (SSL *ssl,
3322 s->psk_client_callback = cb;
3325 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3326 unsigned int (*cb) (SSL *ssl,
3335 ctx->psk_client_callback = cb;
3338 void SSL_set_psk_server_callback(SSL *s,
3339 unsigned int (*cb) (SSL *ssl,
3340 const char *identity,
3345 s->psk_server_callback = cb;
3348 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3349 unsigned int (*cb) (SSL *ssl,
3350 const char *identity,
3355 ctx->psk_server_callback = cb;
3359 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3360 void (*cb) (int write_p, int version,
3361 int content_type, const void *buf,
3362 size_t len, SSL *ssl, void *arg))
3364 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3367 void SSL_set_msg_callback(SSL *ssl,
3368 void (*cb) (int write_p, int version,
3369 int content_type, const void *buf,
3370 size_t len, SSL *ssl, void *arg))
3372 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3375 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3376 int (*cb) (SSL *ssl,
3380 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3381 (void (*)(void))cb);
3384 void SSL_set_not_resumable_session_callback(SSL *ssl,
3385 int (*cb) (SSL *ssl,
3386 int is_forward_secure))
3388 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3389 (void (*)(void))cb);
3393 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3394 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3395 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3399 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3401 ssl_clear_hash_ctx(hash);
3402 *hash = EVP_MD_CTX_create();
3404 EVP_DigestInit_ex(*hash, md, NULL);
3408 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3412 EVP_MD_CTX_destroy(*hash);
3416 /* Retrieve handshake hashes */
3417 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3419 unsigned char *p = out;
3424 EVP_MD_CTX_init(&ctx);
3425 for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
3426 if (mask & ssl_get_algorithm2(s)) {
3427 int hashsize = EVP_MD_size(md);
3428 EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
3429 if (!hdgst || hashsize < 0 || hashsize > outlen)
3431 if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
3433 if (!EVP_DigestFinal_ex(&ctx, p, NULL))
3441 EVP_MD_CTX_cleanup(&ctx);
3445 void SSL_set_debug(SSL *s, int debug)
3450 int SSL_cache_hit(SSL *s)
3455 int SSL_is_server(SSL *s)
3460 void SSL_set_security_level(SSL *s, int level)
3462 s->cert->sec_level = level;
3465 int SSL_get_security_level(const SSL *s)
3467 return s->cert->sec_level;
3470 void SSL_set_security_callback(SSL *s,
3471 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3472 int bits, int nid, void *other,
3475 s->cert->sec_cb = cb;
3478 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3480 void *other, void *ex) {
3481 return s->cert->sec_cb;
3484 void SSL_set0_security_ex_data(SSL *s, void *ex)
3486 s->cert->sec_ex = ex;
3489 void *SSL_get0_security_ex_data(const SSL *s)
3491 return s->cert->sec_ex;
3494 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3496 ctx->cert->sec_level = level;
3499 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3501 return ctx->cert->sec_level;
3504 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3505 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3506 int bits, int nid, void *other,
3509 ctx->cert->sec_cb = cb;
3512 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3518 return ctx->cert->sec_cb;
3521 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3523 ctx->cert->sec_ex = ex;
3526 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3528 return ctx->cert->sec_ex;
3531 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);