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);
250 * Check to see if we were changed into a different method, if so, revert
251 * back if we are not doing session-id reuse.
253 if (!s->in_handshake && (s->session == NULL)
254 && (s->method != s->ctx->method)) {
255 s->method->ssl_free(s);
256 s->method = s->ctx->method;
257 if (!s->method->ssl_new(s))
261 s->method->ssl_clear(s);
265 /** Used to change an SSL_CTXs default SSL method type */
266 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
268 STACK_OF(SSL_CIPHER) *sk;
272 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
273 &(ctx->cipher_list_by_id),
274 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
275 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
276 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
277 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
283 SSL *SSL_new(SSL_CTX *ctx)
288 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
291 if (ctx->method == NULL) {
292 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
296 s = (SSL *)OPENSSL_malloc(sizeof(SSL));
299 memset(s, 0, sizeof(SSL));
301 #ifndef OPENSSL_NO_KRB5
302 s->kssl_ctx = kssl_ctx_new();
303 #endif /* OPENSSL_NO_KRB5 */
305 s->options = ctx->options;
307 s->max_cert_list = ctx->max_cert_list;
309 if (ctx->cert != NULL) {
311 * Earlier library versions used to copy the pointer to the CERT, not
312 * its contents; only when setting new parameters for the per-SSL
313 * copy, ssl_cert_new would be called (and the direct reference to
314 * the per-SSL_CTX settings would be lost, but those still were
315 * indirectly accessed for various purposes, and for that reason they
316 * used to be known as s->ctx->default_cert). Now we don't look at the
317 * SSL_CTX's CERT after having duplicated it once.
320 s->cert = ssl_cert_dup(ctx->cert);
324 s->cert = NULL; /* Cannot really happen (see SSL_CTX_new) */
326 s->read_ahead = ctx->read_ahead;
327 s->msg_callback = ctx->msg_callback;
328 s->msg_callback_arg = ctx->msg_callback_arg;
329 s->verify_mode = ctx->verify_mode;
330 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
332 s->verify_depth = ctx->verify_depth;
334 s->sid_ctx_length = ctx->sid_ctx_length;
335 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
336 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
337 s->verify_callback = ctx->default_verify_callback;
338 s->generate_session_id = ctx->generate_session_id;
340 s->param = X509_VERIFY_PARAM_new();
343 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
345 s->purpose = ctx->purpose;
346 s->trust = ctx->trust;
348 s->quiet_shutdown = ctx->quiet_shutdown;
349 s->max_send_fragment = ctx->max_send_fragment;
351 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
353 #ifndef OPENSSL_NO_TLSEXT
354 s->tlsext_debug_cb = 0;
355 s->tlsext_debug_arg = NULL;
356 s->tlsext_ticket_expected = 0;
357 s->tlsext_status_type = -1;
358 s->tlsext_status_expected = 0;
359 s->tlsext_ocsp_ids = NULL;
360 s->tlsext_ocsp_exts = NULL;
361 s->tlsext_ocsp_resp = NULL;
362 s->tlsext_ocsp_resplen = -1;
363 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
364 s->initial_ctx = ctx;
365 # ifndef OPENSSL_NO_EC
366 if (ctx->tlsext_ecpointformatlist) {
367 s->tlsext_ecpointformatlist =
368 BUF_memdup(ctx->tlsext_ecpointformatlist,
369 ctx->tlsext_ecpointformatlist_length);
370 if (!s->tlsext_ecpointformatlist)
372 s->tlsext_ecpointformatlist_length =
373 ctx->tlsext_ecpointformatlist_length;
375 if (ctx->tlsext_ellipticcurvelist) {
376 s->tlsext_ellipticcurvelist =
377 BUF_memdup(ctx->tlsext_ellipticcurvelist,
378 ctx->tlsext_ellipticcurvelist_length);
379 if (!s->tlsext_ellipticcurvelist)
381 s->tlsext_ellipticcurvelist_length =
382 ctx->tlsext_ellipticcurvelist_length;
385 # ifndef OPENSSL_NO_NEXTPROTONEG
386 s->next_proto_negotiated = NULL;
389 if (s->ctx->alpn_client_proto_list) {
390 s->alpn_client_proto_list =
391 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
392 if (s->alpn_client_proto_list == NULL)
394 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
395 s->ctx->alpn_client_proto_list_len);
396 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
400 s->verify_result = X509_V_OK;
402 s->method = ctx->method;
404 if (!s->method->ssl_new(s))
408 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
412 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
414 #ifndef OPENSSL_NO_PSK
415 s->psk_client_callback = ctx->psk_client_callback;
416 s->psk_server_callback = ctx->psk_server_callback;
423 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
427 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
428 unsigned int sid_ctx_len)
430 if (sid_ctx_len > sizeof ctx->sid_ctx) {
431 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
432 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
435 ctx->sid_ctx_length = sid_ctx_len;
436 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
441 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
442 unsigned int sid_ctx_len)
444 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
445 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
446 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
449 ssl->sid_ctx_length = sid_ctx_len;
450 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
455 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
457 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
458 ctx->generate_session_id = cb;
459 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
463 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
465 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
466 ssl->generate_session_id = cb;
467 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
471 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
475 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
476 * we can "construct" a session to give us the desired check - ie. to
477 * find if there's a session in the hash table that would conflict with
478 * any new session built out of this id/id_len and the ssl_version in use
483 if (id_len > sizeof r.session_id)
486 r.ssl_version = ssl->version;
487 r.session_id_length = id_len;
488 memcpy(r.session_id, id, id_len);
490 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
491 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
492 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
496 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
498 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
501 int SSL_set_purpose(SSL *s, int purpose)
503 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
506 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
508 return X509_VERIFY_PARAM_set_trust(s->param, trust);
511 int SSL_set_trust(SSL *s, int trust)
513 return X509_VERIFY_PARAM_set_trust(s->param, trust);
516 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
518 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
521 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
523 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
526 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
531 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
536 void SSL_certs_clear(SSL *s)
538 ssl_cert_clear_certs(s->cert);
541 void SSL_free(SSL *s)
548 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
556 fprintf(stderr, "SSL_free, bad reference count\n");
562 X509_VERIFY_PARAM_free(s->param);
564 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
566 if (s->bbio != NULL) {
567 /* If the buffering BIO is in place, pop it off */
568 if (s->bbio == s->wbio) {
569 s->wbio = BIO_pop(s->wbio);
575 BIO_free_all(s->rbio);
576 if ((s->wbio != NULL) && (s->wbio != s->rbio))
577 BIO_free_all(s->wbio);
579 if (s->init_buf != NULL)
580 BUF_MEM_free(s->init_buf);
582 /* add extra stuff */
583 if (s->cipher_list != NULL)
584 sk_SSL_CIPHER_free(s->cipher_list);
585 if (s->cipher_list_by_id != NULL)
586 sk_SSL_CIPHER_free(s->cipher_list_by_id);
588 /* Make the next call work :-) */
589 if (s->session != NULL) {
590 ssl_clear_bad_session(s);
591 SSL_SESSION_free(s->session);
594 ssl_clear_cipher_ctx(s);
595 ssl_clear_hash_ctx(&s->read_hash);
596 ssl_clear_hash_ctx(&s->write_hash);
599 ssl_cert_free(s->cert);
600 /* Free up if allocated */
602 #ifndef OPENSSL_NO_TLSEXT
603 if (s->tlsext_hostname)
604 OPENSSL_free(s->tlsext_hostname);
606 SSL_CTX_free(s->initial_ctx);
607 # ifndef OPENSSL_NO_EC
608 if (s->tlsext_ecpointformatlist)
609 OPENSSL_free(s->tlsext_ecpointformatlist);
610 if (s->tlsext_ellipticcurvelist)
611 OPENSSL_free(s->tlsext_ellipticcurvelist);
612 # endif /* OPENSSL_NO_EC */
613 if (s->tlsext_ocsp_exts)
614 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
615 if (s->tlsext_ocsp_ids)
616 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
617 if (s->tlsext_ocsp_resp)
618 OPENSSL_free(s->tlsext_ocsp_resp);
619 if (s->alpn_client_proto_list)
620 OPENSSL_free(s->alpn_client_proto_list);
623 if (s->client_CA != NULL)
624 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
626 if (s->method != NULL)
627 s->method->ssl_free(s);
630 SSL_CTX_free(s->ctx);
632 #ifndef OPENSSL_NO_KRB5
633 if (s->kssl_ctx != NULL)
634 kssl_ctx_free(s->kssl_ctx);
635 #endif /* OPENSSL_NO_KRB5 */
637 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
638 if (s->next_proto_negotiated)
639 OPENSSL_free(s->next_proto_negotiated);
642 #ifndef OPENSSL_NO_SRTP
643 if (s->srtp_profiles)
644 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
650 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
653 * If the output buffering BIO is still in place, remove it
655 if (s->bbio != NULL) {
656 if (s->wbio == s->bbio) {
657 s->wbio = s->wbio->next_bio;
658 s->bbio->next_bio = NULL;
661 if ((s->rbio != NULL) && (s->rbio != rbio))
662 BIO_free_all(s->rbio);
663 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
664 BIO_free_all(s->wbio);
669 BIO *SSL_get_rbio(const SSL *s)
674 BIO *SSL_get_wbio(const SSL *s)
679 int SSL_get_fd(const SSL *s)
681 return (SSL_get_rfd(s));
684 int SSL_get_rfd(const SSL *s)
690 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
696 int SSL_get_wfd(const SSL *s)
702 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
708 #ifndef OPENSSL_NO_SOCK
709 int SSL_set_fd(SSL *s, int fd)
714 bio = BIO_new(BIO_s_socket());
717 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
720 BIO_set_fd(bio, fd, BIO_NOCLOSE);
721 SSL_set_bio(s, bio, bio);
727 int SSL_set_wfd(SSL *s, int fd)
732 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
733 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
734 bio = BIO_new(BIO_s_socket());
737 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
740 BIO_set_fd(bio, fd, BIO_NOCLOSE);
741 SSL_set_bio(s, SSL_get_rbio(s), bio);
743 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
749 int SSL_set_rfd(SSL *s, int fd)
754 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
755 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
756 bio = BIO_new(BIO_s_socket());
759 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
762 BIO_set_fd(bio, fd, BIO_NOCLOSE);
763 SSL_set_bio(s, bio, SSL_get_wbio(s));
765 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
772 /* return length of latest Finished message we sent, copy to 'buf' */
773 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
778 ret = s->s3->tmp.finish_md_len;
781 memcpy(buf, s->s3->tmp.finish_md, count);
786 /* return length of latest Finished message we expected, copy to 'buf' */
787 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
792 ret = s->s3->tmp.peer_finish_md_len;
795 memcpy(buf, s->s3->tmp.peer_finish_md, count);
800 int SSL_get_verify_mode(const SSL *s)
802 return (s->verify_mode);
805 int SSL_get_verify_depth(const SSL *s)
807 return X509_VERIFY_PARAM_get_depth(s->param);
810 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
811 return (s->verify_callback);
814 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
816 return (ctx->verify_mode);
819 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
821 return X509_VERIFY_PARAM_get_depth(ctx->param);
824 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
825 return (ctx->default_verify_callback);
828 void SSL_set_verify(SSL *s, int mode,
829 int (*callback) (int ok, X509_STORE_CTX *ctx))
831 s->verify_mode = mode;
832 if (callback != NULL)
833 s->verify_callback = callback;
836 void SSL_set_verify_depth(SSL *s, int depth)
838 X509_VERIFY_PARAM_set_depth(s->param, depth);
841 void SSL_set_read_ahead(SSL *s, int yes)
846 int SSL_get_read_ahead(const SSL *s)
848 return (s->read_ahead);
851 int SSL_pending(const SSL *s)
854 * SSL_pending cannot work properly if read-ahead is enabled
855 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
856 * impossible to fix since SSL_pending cannot report errors that may be
857 * observed while scanning the new data. (Note that SSL_pending() is
858 * often used as a boolean value, so we'd better not return -1.)
860 return (s->method->ssl_pending(s));
863 X509 *SSL_get_peer_certificate(const SSL *s)
867 if ((s == NULL) || (s->session == NULL))
870 r = s->session->peer;
875 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
880 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
884 if ((s == NULL) || (s->session == NULL)
885 || (s->session->sess_cert == NULL))
888 r = s->session->sess_cert->cert_chain;
891 * If we are a client, cert_chain includes the peer's own certificate; if
892 * we are a server, it does not.
899 * Now in theory, since the calling process own 't' it should be safe to
900 * modify. We need to be able to read f without being hassled
902 void SSL_copy_session_id(SSL *t, const SSL *f)
906 /* Do we need to to SSL locking? */
907 SSL_set_session(t, SSL_get_session(f));
910 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
912 if (t->method != f->method) {
913 t->method->ssl_free(t); /* cleanup current */
914 t->method = f->method; /* change method */
915 t->method->ssl_new(t); /* setup new */
919 if (f->cert != NULL) {
920 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
926 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length);
929 /* Fix this so it checks all the valid key/cert options */
930 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
933 (ctx->cert == NULL) || (ctx->cert->key->x509 == NULL)) {
934 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
935 SSL_R_NO_CERTIFICATE_ASSIGNED);
938 if (ctx->cert->key->privatekey == NULL) {
939 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
940 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
943 return (X509_check_private_key
944 (ctx->cert->key->x509, ctx->cert->key->privatekey));
947 /* Fix this function so that it takes an optional type parameter */
948 int SSL_check_private_key(const SSL *ssl)
951 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
954 if (ssl->cert == NULL) {
955 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
958 if (ssl->cert->key->x509 == NULL) {
959 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
962 if (ssl->cert->key->privatekey == NULL) {
963 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
966 return (X509_check_private_key(ssl->cert->key->x509,
967 ssl->cert->key->privatekey));
970 int SSL_accept(SSL *s)
972 if (s->handshake_func == 0)
973 /* Not properly initialized yet */
974 SSL_set_accept_state(s);
976 return (s->method->ssl_accept(s));
979 int SSL_connect(SSL *s)
981 if (s->handshake_func == 0)
982 /* Not properly initialized yet */
983 SSL_set_connect_state(s);
985 return (s->method->ssl_connect(s));
988 long SSL_get_default_timeout(const SSL *s)
990 return (s->method->get_timeout());
993 int SSL_read(SSL *s, void *buf, int num)
995 if (s->handshake_func == 0) {
996 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1000 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1001 s->rwstate = SSL_NOTHING;
1004 return (s->method->ssl_read(s, buf, num));
1007 int SSL_peek(SSL *s, void *buf, int num)
1009 if (s->handshake_func == 0) {
1010 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1014 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1017 return (s->method->ssl_peek(s, buf, num));
1020 int SSL_write(SSL *s, const void *buf, int num)
1022 if (s->handshake_func == 0) {
1023 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1027 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1028 s->rwstate = SSL_NOTHING;
1029 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1032 return (s->method->ssl_write(s, buf, num));
1035 int SSL_shutdown(SSL *s)
1038 * Note that this function behaves differently from what one might
1039 * expect. Return values are 0 for no success (yet), 1 for success; but
1040 * calling it once is usually not enough, even if blocking I/O is used
1041 * (see ssl3_shutdown).
1044 if (s->handshake_func == 0) {
1045 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1049 if ((s != NULL) && !SSL_in_init(s))
1050 return (s->method->ssl_shutdown(s));
1055 int SSL_renegotiate(SSL *s)
1057 if (s->renegotiate == 0)
1062 return (s->method->ssl_renegotiate(s));
1065 int SSL_renegotiate_abbreviated(SSL *s)
1067 if (s->renegotiate == 0)
1072 return (s->method->ssl_renegotiate(s));
1075 int SSL_renegotiate_pending(SSL *s)
1078 * becomes true when negotiation is requested; false again once a
1079 * handshake has finished
1081 return (s->renegotiate != 0);
1084 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1089 case SSL_CTRL_GET_READ_AHEAD:
1090 return (s->read_ahead);
1091 case SSL_CTRL_SET_READ_AHEAD:
1093 s->read_ahead = larg;
1096 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1097 s->msg_callback_arg = parg;
1100 case SSL_CTRL_OPTIONS:
1101 return (s->options |= larg);
1102 case SSL_CTRL_CLEAR_OPTIONS:
1103 return (s->options &= ~larg);
1105 return (s->mode |= larg);
1106 case SSL_CTRL_CLEAR_MODE:
1107 return (s->mode &= ~larg);
1108 case SSL_CTRL_GET_MAX_CERT_LIST:
1109 return (s->max_cert_list);
1110 case SSL_CTRL_SET_MAX_CERT_LIST:
1111 l = s->max_cert_list;
1112 s->max_cert_list = larg;
1114 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1115 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1117 s->max_send_fragment = larg;
1119 case SSL_CTRL_GET_RI_SUPPORT:
1121 return s->s3->send_connection_binding;
1124 case SSL_CTRL_CERT_FLAGS:
1125 return (s->cert->cert_flags |= larg);
1126 case SSL_CTRL_CLEAR_CERT_FLAGS:
1127 return (s->cert->cert_flags &= ~larg);
1129 case SSL_CTRL_GET_RAW_CIPHERLIST:
1131 if (s->cert->ciphers_raw == NULL)
1133 *(unsigned char **)parg = s->cert->ciphers_raw;
1134 return (int)s->cert->ciphers_rawlen;
1136 return ssl_put_cipher_by_char(s, NULL, NULL);
1138 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1142 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1145 case SSL_CTRL_SET_MSG_CALLBACK:
1146 s->msg_callback = (void (*)
1147 (int write_p, int version, int content_type,
1148 const void *buf, size_t len, SSL *ssl,
1153 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1157 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1159 return ctx->sessions;
1162 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1165 /* For some cases with ctx == NULL perform syntax checks */
1168 #ifndef OPENSSL_NO_EC
1169 case SSL_CTRL_SET_CURVES_LIST:
1170 return tls1_set_curves_list(NULL, NULL, parg);
1172 case SSL_CTRL_SET_SIGALGS_LIST:
1173 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1174 return tls1_set_sigalgs_list(NULL, parg, 0);
1181 case SSL_CTRL_GET_READ_AHEAD:
1182 return (ctx->read_ahead);
1183 case SSL_CTRL_SET_READ_AHEAD:
1184 l = ctx->read_ahead;
1185 ctx->read_ahead = larg;
1188 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1189 ctx->msg_callback_arg = parg;
1192 case SSL_CTRL_GET_MAX_CERT_LIST:
1193 return (ctx->max_cert_list);
1194 case SSL_CTRL_SET_MAX_CERT_LIST:
1195 l = ctx->max_cert_list;
1196 ctx->max_cert_list = larg;
1199 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1200 l = ctx->session_cache_size;
1201 ctx->session_cache_size = larg;
1203 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1204 return (ctx->session_cache_size);
1205 case SSL_CTRL_SET_SESS_CACHE_MODE:
1206 l = ctx->session_cache_mode;
1207 ctx->session_cache_mode = larg;
1209 case SSL_CTRL_GET_SESS_CACHE_MODE:
1210 return (ctx->session_cache_mode);
1212 case SSL_CTRL_SESS_NUMBER:
1213 return (lh_SSL_SESSION_num_items(ctx->sessions));
1214 case SSL_CTRL_SESS_CONNECT:
1215 return (ctx->stats.sess_connect);
1216 case SSL_CTRL_SESS_CONNECT_GOOD:
1217 return (ctx->stats.sess_connect_good);
1218 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1219 return (ctx->stats.sess_connect_renegotiate);
1220 case SSL_CTRL_SESS_ACCEPT:
1221 return (ctx->stats.sess_accept);
1222 case SSL_CTRL_SESS_ACCEPT_GOOD:
1223 return (ctx->stats.sess_accept_good);
1224 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1225 return (ctx->stats.sess_accept_renegotiate);
1226 case SSL_CTRL_SESS_HIT:
1227 return (ctx->stats.sess_hit);
1228 case SSL_CTRL_SESS_CB_HIT:
1229 return (ctx->stats.sess_cb_hit);
1230 case SSL_CTRL_SESS_MISSES:
1231 return (ctx->stats.sess_miss);
1232 case SSL_CTRL_SESS_TIMEOUTS:
1233 return (ctx->stats.sess_timeout);
1234 case SSL_CTRL_SESS_CACHE_FULL:
1235 return (ctx->stats.sess_cache_full);
1236 case SSL_CTRL_OPTIONS:
1237 return (ctx->options |= larg);
1238 case SSL_CTRL_CLEAR_OPTIONS:
1239 return (ctx->options &= ~larg);
1241 return (ctx->mode |= larg);
1242 case SSL_CTRL_CLEAR_MODE:
1243 return (ctx->mode &= ~larg);
1244 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1245 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1247 ctx->max_send_fragment = larg;
1249 case SSL_CTRL_CERT_FLAGS:
1250 return (ctx->cert->cert_flags |= larg);
1251 case SSL_CTRL_CLEAR_CERT_FLAGS:
1252 return (ctx->cert->cert_flags &= ~larg);
1254 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1258 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1261 case SSL_CTRL_SET_MSG_CALLBACK:
1262 ctx->msg_callback = (void (*)
1263 (int write_p, int version, int content_type,
1264 const void *buf, size_t len, SSL *ssl,
1269 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1273 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1281 return ((l > 0) ? 1 : -1);
1284 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1285 const SSL_CIPHER *const *bp)
1289 l = (*ap)->id - (*bp)->id;
1293 return ((l > 0) ? 1 : -1);
1296 /** return a STACK of the ciphers available for the SSL and in order of
1298 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1301 if (s->cipher_list != NULL) {
1302 return (s->cipher_list);
1303 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1304 return (s->ctx->cipher_list);
1310 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1312 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1314 ciphers = SSL_get_ciphers(s);
1317 ssl_set_client_disabled(s);
1318 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1319 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1320 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1322 sk = sk_SSL_CIPHER_new_null();
1325 if (!sk_SSL_CIPHER_push(sk, c)) {
1326 sk_SSL_CIPHER_free(sk);
1334 /** return a STACK of the ciphers available for the SSL and in order of
1336 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1339 if (s->cipher_list_by_id != NULL) {
1340 return (s->cipher_list_by_id);
1341 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1342 return (s->ctx->cipher_list_by_id);
1348 /** The old interface to get the same thing as SSL_get_ciphers() */
1349 const char *SSL_get_cipher_list(const SSL *s, int n)
1352 STACK_OF(SSL_CIPHER) *sk;
1356 sk = SSL_get_ciphers(s);
1357 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1359 c = sk_SSL_CIPHER_value(sk, n);
1365 /** specify the ciphers to be used by default by the SSL_CTX */
1366 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1368 STACK_OF(SSL_CIPHER) *sk;
1370 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1371 &ctx->cipher_list_by_id, str, ctx->cert);
1373 * ssl_create_cipher_list may return an empty stack if it was unable to
1374 * find a cipher matching the given rule string (for example if the rule
1375 * string specifies a cipher which has been disabled). This is not an
1376 * error as far as ssl_create_cipher_list is concerned, and hence
1377 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1381 else if (sk_SSL_CIPHER_num(sk) == 0) {
1382 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1388 /** specify the ciphers to be used by the SSL */
1389 int SSL_set_cipher_list(SSL *s, const char *str)
1391 STACK_OF(SSL_CIPHER) *sk;
1393 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1394 &s->cipher_list_by_id, str, s->cert);
1395 /* see comment in SSL_CTX_set_cipher_list */
1398 else if (sk_SSL_CIPHER_num(sk) == 0) {
1399 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1405 /* works well for SSLv2, not so good for SSLv3 */
1406 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1409 STACK_OF(SSL_CIPHER) *sk;
1413 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1417 sk = s->session->ciphers;
1419 if (sk_SSL_CIPHER_num(sk) == 0)
1422 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1425 c = sk_SSL_CIPHER_value(sk, i);
1426 n = strlen(c->name);
1442 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1444 int (*put_cb) (const SSL_CIPHER *,
1450 int empty_reneg_info_scsv = !s->renegotiate;
1451 /* Set disabled masks for this session */
1452 ssl_set_client_disabled(s);
1458 put_cb = s->method->put_cipher_by_char;
1460 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1461 c = sk_SSL_CIPHER_value(sk, i);
1462 /* Skip disabled ciphers */
1463 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1465 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1466 if (c->id == SSL3_CK_SCSV) {
1467 if (!empty_reneg_info_scsv)
1470 empty_reneg_info_scsv = 0;
1477 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1481 if (empty_reneg_info_scsv) {
1482 static SSL_CIPHER scsv = {
1483 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1485 j = put_cb(&scsv, p);
1487 #ifdef OPENSSL_RI_DEBUG
1489 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1492 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1493 static SSL_CIPHER scsv = {
1494 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1496 j = put_cb(&scsv, p);
1504 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1506 STACK_OF(SSL_CIPHER) **skp)
1508 const SSL_CIPHER *c;
1509 STACK_OF(SSL_CIPHER) *sk;
1513 s->s3->send_connection_binding = 0;
1515 n = ssl_put_cipher_by_char(s, NULL, NULL);
1516 if (n == 0 || (num % n) != 0) {
1517 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1518 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1521 if ((skp == NULL) || (*skp == NULL))
1522 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1525 sk_SSL_CIPHER_zero(sk);
1528 if (s->cert->ciphers_raw)
1529 OPENSSL_free(s->cert->ciphers_raw);
1530 s->cert->ciphers_raw = BUF_memdup(p, num);
1531 if (s->cert->ciphers_raw == NULL) {
1532 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1535 s->cert->ciphers_rawlen = (size_t)num;
1537 for (i = 0; i < num; i += n) {
1538 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1539 if (s->s3 && (n != 3 || !p[0]) &&
1540 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1541 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1542 /* SCSV fatal if renegotiating */
1543 if (s->renegotiate) {
1544 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1545 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1546 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1549 s->s3->send_connection_binding = 1;
1551 #ifdef OPENSSL_RI_DEBUG
1552 fprintf(stderr, "SCSV received by server\n");
1557 /* Check for TLS_FALLBACK_SCSV */
1558 if ((n != 3 || !p[0]) &&
1559 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1560 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1562 * The SCSV indicates that the client previously tried a higher
1563 * version. Fail if the current version is an unexpected
1566 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1567 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1568 SSL_R_INAPPROPRIATE_FALLBACK);
1570 ssl3_send_alert(s, SSL3_AL_FATAL,
1571 SSL_AD_INAPPROPRIATE_FALLBACK);
1578 c = ssl_get_cipher_by_char(s, p);
1581 if (!sk_SSL_CIPHER_push(sk, c)) {
1582 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1592 if ((skp == NULL) || (*skp == NULL))
1593 sk_SSL_CIPHER_free(sk);
1597 #ifndef OPENSSL_NO_TLSEXT
1598 /** return a servername extension value if provided in Client Hello, or NULL.
1599 * So far, only host_name types are defined (RFC 3546).
1602 const char *SSL_get_servername(const SSL *s, const int type)
1604 if (type != TLSEXT_NAMETYPE_host_name)
1607 return s->session && !s->tlsext_hostname ?
1608 s->session->tlsext_hostname : s->tlsext_hostname;
1611 int SSL_get_servername_type(const SSL *s)
1614 && (!s->tlsext_hostname ? s->session->
1615 tlsext_hostname : s->tlsext_hostname))
1616 return TLSEXT_NAMETYPE_host_name;
1621 * SSL_select_next_proto implements the standard protocol selection. It is
1622 * expected that this function is called from the callback set by
1623 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1624 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1625 * not included in the length. A byte string of length 0 is invalid. No byte
1626 * string may be truncated. The current, but experimental algorithm for
1627 * selecting the protocol is: 1) If the server doesn't support NPN then this
1628 * is indicated to the callback. In this case, the client application has to
1629 * abort the connection or have a default application level protocol. 2) If
1630 * the server supports NPN, but advertises an empty list then the client
1631 * selects the first protcol in its list, but indicates via the API that this
1632 * fallback case was enacted. 3) Otherwise, the client finds the first
1633 * protocol in the server's list that it supports and selects this protocol.
1634 * This is because it's assumed that the server has better information about
1635 * which protocol a client should use. 4) If the client doesn't support any
1636 * of the server's advertised protocols, then this is treated the same as
1637 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1638 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1640 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1641 const unsigned char *server,
1642 unsigned int server_len,
1643 const unsigned char *client,
1644 unsigned int client_len)
1647 const unsigned char *result;
1648 int status = OPENSSL_NPN_UNSUPPORTED;
1651 * For each protocol in server preference order, see if we support it.
1653 for (i = 0; i < server_len;) {
1654 for (j = 0; j < client_len;) {
1655 if (server[i] == client[j] &&
1656 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1657 /* We found a match */
1658 result = &server[i];
1659 status = OPENSSL_NPN_NEGOTIATED;
1669 /* There's no overlap between our protocols and the server's list. */
1671 status = OPENSSL_NPN_NO_OVERLAP;
1674 *out = (unsigned char *)result + 1;
1675 *outlen = result[0];
1679 # ifndef OPENSSL_NO_NEXTPROTONEG
1681 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1682 * client's requested protocol for this connection and returns 0. If the
1683 * client didn't request any protocol, then *data is set to NULL. Note that
1684 * the client can request any protocol it chooses. The value returned from
1685 * this function need not be a member of the list of supported protocols
1686 * provided by the callback.
1688 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1691 *data = s->next_proto_negotiated;
1695 *len = s->next_proto_negotiated_len;
1700 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1701 * a TLS server needs a list of supported protocols for Next Protocol
1702 * Negotiation. The returned list must be in wire format. The list is
1703 * returned by setting |out| to point to it and |outlen| to its length. This
1704 * memory will not be modified, but one should assume that the SSL* keeps a
1705 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1706 * wishes to advertise. Otherwise, no such extension will be included in the
1709 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1710 int (*cb) (SSL *ssl,
1713 unsigned int *outlen,
1714 void *arg), void *arg)
1716 ctx->next_protos_advertised_cb = cb;
1717 ctx->next_protos_advertised_cb_arg = arg;
1721 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1722 * client needs to select a protocol from the server's provided list. |out|
1723 * must be set to point to the selected protocol (which may be within |in|).
1724 * The length of the protocol name must be written into |outlen|. The
1725 * server's advertised protocols are provided in |in| and |inlen|. The
1726 * callback can assume that |in| is syntactically valid. The client must
1727 * select a protocol. It is fatal to the connection if this callback returns
1728 * a value other than SSL_TLSEXT_ERR_OK.
1730 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1731 int (*cb) (SSL *s, unsigned char **out,
1732 unsigned char *outlen,
1733 const unsigned char *in,
1735 void *arg), void *arg)
1737 ctx->next_proto_select_cb = cb;
1738 ctx->next_proto_select_cb_arg = arg;
1743 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1744 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1745 * length-prefixed strings). Returns 0 on success.
1747 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1748 unsigned protos_len)
1750 if (ctx->alpn_client_proto_list)
1751 OPENSSL_free(ctx->alpn_client_proto_list);
1753 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1754 if (!ctx->alpn_client_proto_list)
1756 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1757 ctx->alpn_client_proto_list_len = protos_len;
1763 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1764 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1765 * length-prefixed strings). Returns 0 on success.
1767 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1768 unsigned protos_len)
1770 if (ssl->alpn_client_proto_list)
1771 OPENSSL_free(ssl->alpn_client_proto_list);
1773 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1774 if (!ssl->alpn_client_proto_list)
1776 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1777 ssl->alpn_client_proto_list_len = protos_len;
1783 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1784 * called during ClientHello processing in order to select an ALPN protocol
1785 * from the client's list of offered protocols.
1787 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1788 int (*cb) (SSL *ssl,
1789 const unsigned char **out,
1790 unsigned char *outlen,
1791 const unsigned char *in,
1793 void *arg), void *arg)
1795 ctx->alpn_select_cb = cb;
1796 ctx->alpn_select_cb_arg = arg;
1800 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1801 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1802 * (not including the leading length-prefix byte). If the server didn't
1803 * respond with a negotiated protocol then |*len| will be zero.
1805 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1810 *data = ssl->s3->alpn_selected;
1814 *len = ssl->s3->alpn_selected_len;
1817 #endif /* !OPENSSL_NO_TLSEXT */
1819 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1820 const char *label, size_t llen,
1821 const unsigned char *p, size_t plen,
1824 if (s->version < TLS1_VERSION)
1827 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1832 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1837 ((unsigned int)a->session_id[0]) |
1838 ((unsigned int)a->session_id[1] << 8L) |
1839 ((unsigned long)a->session_id[2] << 16L) |
1840 ((unsigned long)a->session_id[3] << 24L);
1845 * NB: If this function (or indeed the hash function which uses a sort of
1846 * coarser function than this one) is changed, ensure
1847 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1848 * being able to construct an SSL_SESSION that will collide with any existing
1849 * session with a matching session ID.
1851 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1853 if (a->ssl_version != b->ssl_version)
1855 if (a->session_id_length != b->session_id_length)
1857 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1861 * These wrapper functions should remain rather than redeclaring
1862 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1863 * variable. The reason is that the functions aren't static, they're exposed
1866 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1867 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1869 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1871 SSL_CTX *ret = NULL;
1874 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1878 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1879 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1883 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1884 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1887 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1891 memset(ret, 0, sizeof(SSL_CTX));
1895 ret->cert_store = NULL;
1896 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1897 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1898 ret->session_cache_head = NULL;
1899 ret->session_cache_tail = NULL;
1901 /* We take the system default */
1902 ret->session_timeout = meth->get_timeout();
1904 ret->new_session_cb = 0;
1905 ret->remove_session_cb = 0;
1906 ret->get_session_cb = 0;
1907 ret->generate_session_id = 0;
1909 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1911 ret->references = 1;
1912 ret->quiet_shutdown = 0;
1914 /* ret->cipher=NULL;*/
1916 ret->s2->challenge=NULL;
1917 ret->master_key=NULL;
1918 ret->s2->conn_id=NULL; */
1920 ret->info_callback = NULL;
1922 ret->app_verify_callback = 0;
1923 ret->app_verify_arg = NULL;
1925 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1926 ret->read_ahead = 0;
1927 ret->msg_callback = 0;
1928 ret->msg_callback_arg = NULL;
1929 ret->verify_mode = SSL_VERIFY_NONE;
1931 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */
1933 ret->sid_ctx_length = 0;
1934 ret->default_verify_callback = NULL;
1935 if ((ret->cert = ssl_cert_new()) == NULL)
1938 ret->default_passwd_callback = 0;
1939 ret->default_passwd_callback_userdata = NULL;
1940 ret->client_cert_cb = 0;
1941 ret->app_gen_cookie_cb = 0;
1942 ret->app_verify_cookie_cb = 0;
1944 ret->sessions = lh_SSL_SESSION_new();
1945 if (ret->sessions == NULL)
1947 ret->cert_store = X509_STORE_new();
1948 if (ret->cert_store == NULL)
1951 ssl_create_cipher_list(ret->method,
1952 &ret->cipher_list, &ret->cipher_list_by_id,
1953 SSL_DEFAULT_CIPHER_LIST, ret->cert);
1954 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1955 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1959 ret->param = X509_VERIFY_PARAM_new();
1963 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1964 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1967 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1968 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1972 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1975 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1977 ret->extra_certs = NULL;
1978 /* No compression for DTLS */
1979 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1980 ret->comp_methods = SSL_COMP_get_compression_methods();
1982 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1984 #ifndef OPENSSL_NO_TLSEXT
1985 ret->tlsext_servername_callback = 0;
1986 ret->tlsext_servername_arg = NULL;
1987 /* Setup RFC4507 ticket keys */
1988 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1989 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1990 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1991 ret->options |= SSL_OP_NO_TICKET;
1993 ret->tlsext_status_cb = 0;
1994 ret->tlsext_status_arg = NULL;
1996 # ifndef OPENSSL_NO_NEXTPROTONEG
1997 ret->next_protos_advertised_cb = 0;
1998 ret->next_proto_select_cb = 0;
2001 #ifndef OPENSSL_NO_PSK
2002 ret->psk_identity_hint = NULL;
2003 ret->psk_client_callback = NULL;
2004 ret->psk_server_callback = NULL;
2006 #ifndef OPENSSL_NO_SRP
2007 SSL_CTX_SRP_CTX_init(ret);
2009 #ifndef OPENSSL_NO_ENGINE
2010 ret->client_cert_engine = NULL;
2011 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2012 # define eng_strx(x) #x
2013 # define eng_str(x) eng_strx(x)
2014 /* Use specific client engine automatically... ignore errors */
2017 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2020 ENGINE_load_builtin_engines();
2021 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2023 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2029 * Default is to connect to non-RI servers. When RI is more widely
2030 * deployed might change this.
2032 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2036 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2043 void SSL_CTX_free(SSL_CTX *a)
2050 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2052 REF_PRINT("SSL_CTX", a);
2058 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
2064 X509_VERIFY_PARAM_free(a->param);
2067 * Free internal session cache. However: the remove_cb() may reference
2068 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2069 * after the sessions were flushed.
2070 * As the ex_data handling routines might also touch the session cache,
2071 * the most secure solution seems to be: empty (flush) the cache, then
2072 * free ex_data, then finally free the cache.
2073 * (See ticket [openssl.org #212].)
2075 if (a->sessions != NULL)
2076 SSL_CTX_flush_sessions(a, 0);
2078 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2080 if (a->sessions != NULL)
2081 lh_SSL_SESSION_free(a->sessions);
2083 if (a->cert_store != NULL)
2084 X509_STORE_free(a->cert_store);
2085 if (a->cipher_list != NULL)
2086 sk_SSL_CIPHER_free(a->cipher_list);
2087 if (a->cipher_list_by_id != NULL)
2088 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2089 if (a->cert != NULL)
2090 ssl_cert_free(a->cert);
2091 if (a->client_CA != NULL)
2092 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2093 if (a->extra_certs != NULL)
2094 sk_X509_pop_free(a->extra_certs, X509_free);
2095 #if 0 /* This should never be done, since it
2096 * removes a global database */
2097 if (a->comp_methods != NULL)
2098 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free);
2100 a->comp_methods = NULL;
2103 #ifndef OPENSSL_NO_SRTP
2104 if (a->srtp_profiles)
2105 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2108 #ifndef OPENSSL_NO_PSK
2109 if (a->psk_identity_hint)
2110 OPENSSL_free(a->psk_identity_hint);
2112 #ifndef OPENSSL_NO_SRP
2113 SSL_CTX_SRP_CTX_free(a);
2115 #ifndef OPENSSL_NO_ENGINE
2116 if (a->client_cert_engine)
2117 ENGINE_finish(a->client_cert_engine);
2120 #ifndef OPENSSL_NO_TLSEXT
2121 # ifndef OPENSSL_NO_EC
2122 if (a->tlsext_ecpointformatlist)
2123 OPENSSL_free(a->tlsext_ecpointformatlist);
2124 if (a->tlsext_ellipticcurvelist)
2125 OPENSSL_free(a->tlsext_ellipticcurvelist);
2126 # endif /* OPENSSL_NO_EC */
2127 if (a->alpn_client_proto_list != NULL)
2128 OPENSSL_free(a->alpn_client_proto_list);
2134 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2136 ctx->default_passwd_callback = cb;
2139 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2141 ctx->default_passwd_callback_userdata = u;
2144 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2145 int (*cb) (X509_STORE_CTX *, void *),
2148 ctx->app_verify_callback = cb;
2149 ctx->app_verify_arg = arg;
2152 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2153 int (*cb) (int, X509_STORE_CTX *))
2155 ctx->verify_mode = mode;
2156 ctx->default_verify_callback = cb;
2159 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2161 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2164 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2167 ssl_cert_set_cert_cb(c->cert, cb, arg);
2170 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2172 ssl_cert_set_cert_cb(s->cert, cb, arg);
2175 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2178 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2179 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2180 int rsa_tmp_export, dh_tmp_export, kl;
2181 unsigned long mask_k, mask_a, emask_k, emask_a;
2182 #ifndef OPENSSL_NO_ECDSA
2183 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2185 #ifndef OPENSSL_NO_ECDH
2186 int have_ecdh_tmp, ecdh_ok;
2188 #ifndef OPENSSL_NO_EC
2190 EVP_PKEY *ecc_pkey = NULL;
2191 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2196 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2198 #ifndef OPENSSL_NO_RSA
2199 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2200 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2201 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2203 rsa_tmp = rsa_tmp_export = 0;
2205 #ifndef OPENSSL_NO_DH
2206 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2207 dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2209 && DH_size(c->dh_tmp) * 8 <= kl));
2211 dh_tmp = dh_tmp_export = 0;
2214 #ifndef OPENSSL_NO_ECDH
2215 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2217 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2218 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID;
2219 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2220 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2221 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2222 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2223 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2224 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2225 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID;
2226 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2227 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2228 /* FIX THIS EAY EAY EAY */
2229 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID;
2230 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2231 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2232 #ifndef OPENSSL_NO_EC
2233 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID;
2242 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2243 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2244 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2247 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2248 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2249 mask_k |= SSL_kGOST;
2250 mask_a |= SSL_aGOST01;
2252 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2253 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2254 mask_k |= SSL_kGOST;
2255 mask_a |= SSL_aGOST94;
2258 if (rsa_enc || (rsa_tmp && rsa_sign))
2260 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2261 emask_k |= SSL_kRSA;
2264 /* The match needs to be both kDHE and aRSA or aDSA, so don't worry */
2265 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign))
2267 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2268 (rsa_enc || rsa_sign || dsa_sign))
2269 emask_k |= SSL_kDHE;
2273 emask_k |= SSL_kDHE;
2281 emask_k |= SSL_kDHr;
2286 emask_k |= SSL_kDHd;
2288 if (emask_k & (SSL_kDHr | SSL_kDHd))
2291 if (rsa_enc || rsa_sign) {
2293 emask_a |= SSL_aRSA;
2298 emask_a |= SSL_aDSS;
2301 mask_a |= SSL_aNULL;
2302 emask_a |= SSL_aNULL;
2304 #ifndef OPENSSL_NO_KRB5
2305 mask_k |= SSL_kKRB5;
2306 mask_a |= SSL_aKRB5;
2307 emask_k |= SSL_kKRB5;
2308 emask_a |= SSL_aKRB5;
2312 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2313 * depending on the key usage extension.
2315 #ifndef OPENSSL_NO_EC
2316 if (have_ecc_cert) {
2317 cpk = &c->pkeys[SSL_PKEY_ECC];
2319 /* This call populates extension flags (ex_flags) */
2320 X509_check_purpose(x, -1, 0);
2321 # ifndef OPENSSL_NO_ECDH
2322 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2323 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2325 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2326 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2327 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2329 ecc_pkey = X509_get_pubkey(x);
2330 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2331 EVP_PKEY_free(ecc_pkey);
2332 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2333 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2334 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2336 # ifndef OPENSSL_NO_ECDH
2339 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2340 mask_k |= SSL_kECDHr;
2341 mask_a |= SSL_aECDH;
2342 if (ecc_pkey_size <= 163) {
2343 emask_k |= SSL_kECDHr;
2344 emask_a |= SSL_aECDH;
2348 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2349 mask_k |= SSL_kECDHe;
2350 mask_a |= SSL_aECDH;
2351 if (ecc_pkey_size <= 163) {
2352 emask_k |= SSL_kECDHe;
2353 emask_a |= SSL_aECDH;
2358 # ifndef OPENSSL_NO_ECDSA
2360 mask_a |= SSL_aECDSA;
2361 emask_a |= SSL_aECDSA;
2367 #ifndef OPENSSL_NO_ECDH
2368 if (have_ecdh_tmp) {
2369 mask_k |= SSL_kECDHE;
2370 emask_k |= SSL_kECDHE;
2374 #ifndef OPENSSL_NO_PSK
2377 emask_k |= SSL_kPSK;
2378 emask_a |= SSL_aPSK;
2383 c->export_mask_k = emask_k;
2384 c->export_mask_a = emask_a;
2388 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2389 #define ku_reject(x, usage) \
2390 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2392 #ifndef OPENSSL_NO_EC
2394 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2396 unsigned long alg_k, alg_a;
2397 EVP_PKEY *pkey = NULL;
2399 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2400 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2402 alg_k = cs->algorithm_mkey;
2403 alg_a = cs->algorithm_auth;
2405 if (SSL_C_IS_EXPORT(cs)) {
2406 /* ECDH key length in export ciphers must be <= 163 bits */
2407 pkey = X509_get_pubkey(x);
2410 keysize = EVP_PKEY_bits(pkey);
2411 EVP_PKEY_free(pkey);
2416 /* This call populates the ex_flags field correctly */
2417 X509_check_purpose(x, -1, 0);
2418 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2419 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2420 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2422 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2423 /* key usage, if present, must allow key agreement */
2424 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2425 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2426 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2429 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2430 /* signature alg must be ECDSA */
2431 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2432 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2433 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2437 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2438 /* signature alg must be RSA */
2440 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2441 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2442 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2447 if (alg_a & SSL_aECDSA) {
2448 /* key usage, if present, must allow signing */
2449 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2450 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2451 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2456 return 1; /* all checks are ok */
2461 static int ssl_get_server_cert_index(const SSL *s)
2464 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2465 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2466 idx = SSL_PKEY_RSA_SIGN;
2468 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2472 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2478 if (!s->s3 || !s->s3->tmp.new_cipher)
2480 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2482 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2484 * Broken protocol test: return last used certificate: which may mismatch
2487 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2491 i = ssl_get_server_cert_index(s);
2493 /* This may or may not be an error. */
2498 return &c->pkeys[i];
2501 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2504 unsigned long alg_a;
2508 alg_a = cipher->algorithm_auth;
2511 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2513 * Broken protocol test: use last key: which may mismatch the one
2516 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2517 idx = c->key - c->pkeys;
2521 if ((alg_a & SSL_aDSS) &&
2522 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2523 idx = SSL_PKEY_DSA_SIGN;
2524 else if (alg_a & SSL_aRSA) {
2525 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2526 idx = SSL_PKEY_RSA_SIGN;
2527 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2528 idx = SSL_PKEY_RSA_ENC;
2529 } else if ((alg_a & SSL_aECDSA) &&
2530 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2533 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2537 *pmd = c->pkeys[idx].digest;
2538 return c->pkeys[idx].privatekey;
2541 #ifndef OPENSSL_NO_TLSEXT
2542 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2543 size_t *serverinfo_length)
2547 *serverinfo_length = 0;
2550 i = ssl_get_server_cert_index(s);
2554 if (c->pkeys[i].serverinfo == NULL)
2557 *serverinfo = c->pkeys[i].serverinfo;
2558 *serverinfo_length = c->pkeys[i].serverinfo_length;
2563 void ssl_update_cache(SSL *s, int mode)
2568 * If the session_id_length is 0, we are not supposed to cache it, and it
2569 * would be rather hard to do anyway :-)
2571 if (s->session->session_id_length == 0)
2574 i = s->session_ctx->session_cache_mode;
2575 if ((i & mode) && (!s->hit)
2576 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2577 || SSL_CTX_add_session(s->session_ctx, s->session))
2578 && (s->session_ctx->new_session_cb != NULL)) {
2579 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2580 if (!s->session_ctx->new_session_cb(s, s->session))
2581 SSL_SESSION_free(s->session);
2584 /* auto flush every 255 connections */
2585 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2586 if ((((mode & SSL_SESS_CACHE_CLIENT)
2587 ? s->session_ctx->stats.sess_connect_good
2588 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2589 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2594 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2599 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2604 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2609 if (s->method != meth) {
2610 if (s->handshake_func != NULL)
2611 conn = (s->handshake_func == s->method->ssl_connect);
2613 if (s->method->version == meth->version)
2616 s->method->ssl_free(s);
2618 ret = s->method->ssl_new(s);
2622 s->handshake_func = meth->ssl_connect;
2624 s->handshake_func = meth->ssl_accept;
2629 int SSL_get_error(const SSL *s, int i)
2636 return (SSL_ERROR_NONE);
2639 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2640 * where we do encode the error
2642 if ((l = ERR_peek_error()) != 0) {
2643 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2644 return (SSL_ERROR_SYSCALL);
2646 return (SSL_ERROR_SSL);
2649 if ((i < 0) && SSL_want_read(s)) {
2650 bio = SSL_get_rbio(s);
2651 if (BIO_should_read(bio))
2652 return (SSL_ERROR_WANT_READ);
2653 else if (BIO_should_write(bio))
2655 * This one doesn't make too much sense ... We never try to write
2656 * to the rbio, and an application program where rbio and wbio
2657 * are separate couldn't even know what it should wait for.
2658 * However if we ever set s->rwstate incorrectly (so that we have
2659 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2660 * wbio *are* the same, this test works around that bug; so it
2661 * might be safer to keep it.
2663 return (SSL_ERROR_WANT_WRITE);
2664 else if (BIO_should_io_special(bio)) {
2665 reason = BIO_get_retry_reason(bio);
2666 if (reason == BIO_RR_CONNECT)
2667 return (SSL_ERROR_WANT_CONNECT);
2668 else if (reason == BIO_RR_ACCEPT)
2669 return (SSL_ERROR_WANT_ACCEPT);
2671 return (SSL_ERROR_SYSCALL); /* unknown */
2675 if ((i < 0) && SSL_want_write(s)) {
2676 bio = SSL_get_wbio(s);
2677 if (BIO_should_write(bio))
2678 return (SSL_ERROR_WANT_WRITE);
2679 else if (BIO_should_read(bio))
2681 * See above (SSL_want_read(s) with BIO_should_write(bio))
2683 return (SSL_ERROR_WANT_READ);
2684 else if (BIO_should_io_special(bio)) {
2685 reason = BIO_get_retry_reason(bio);
2686 if (reason == BIO_RR_CONNECT)
2687 return (SSL_ERROR_WANT_CONNECT);
2688 else if (reason == BIO_RR_ACCEPT)
2689 return (SSL_ERROR_WANT_ACCEPT);
2691 return (SSL_ERROR_SYSCALL);
2694 if ((i < 0) && SSL_want_x509_lookup(s)) {
2695 return (SSL_ERROR_WANT_X509_LOOKUP);
2699 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2700 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2701 return (SSL_ERROR_ZERO_RETURN);
2703 return (SSL_ERROR_SYSCALL);
2706 int SSL_do_handshake(SSL *s)
2710 if (s->handshake_func == NULL) {
2711 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2715 s->method->ssl_renegotiate_check(s);
2717 if (SSL_in_init(s) || SSL_in_before(s)) {
2718 ret = s->handshake_func(s);
2724 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2725 * calls will reset it
2727 void SSL_set_accept_state(SSL *s)
2731 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2732 s->handshake_func = s->method->ssl_accept;
2733 /* clear the current cipher */
2734 ssl_clear_cipher_ctx(s);
2735 ssl_clear_hash_ctx(&s->read_hash);
2736 ssl_clear_hash_ctx(&s->write_hash);
2739 void SSL_set_connect_state(SSL *s)
2743 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2744 s->handshake_func = s->method->ssl_connect;
2745 /* clear the current cipher */
2746 ssl_clear_cipher_ctx(s);
2747 ssl_clear_hash_ctx(&s->read_hash);
2748 ssl_clear_hash_ctx(&s->write_hash);
2751 int ssl_undefined_function(SSL *s)
2753 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2757 int ssl_undefined_void_function(void)
2759 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2760 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2764 int ssl_undefined_const_function(const SSL *s)
2766 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2767 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2771 SSL_METHOD *ssl_bad_method(int ver)
2773 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2777 const char *SSL_get_version(const SSL *s)
2779 if (s->version == TLS1_2_VERSION)
2781 else if (s->version == TLS1_1_VERSION)
2783 else if (s->version == TLS1_VERSION)
2785 else if (s->version == SSL3_VERSION)
2791 SSL *SSL_dup(SSL *s)
2793 STACK_OF(X509_NAME) *sk;
2798 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2801 ret->version = s->version;
2802 ret->type = s->type;
2803 ret->method = s->method;
2805 if (s->session != NULL) {
2806 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2807 SSL_copy_session_id(ret, s);
2810 * No session has been established yet, so we have to expect that
2811 * s->cert or ret->cert will be changed later -- they should not both
2812 * point to the same object, and thus we can't use
2813 * SSL_copy_session_id.
2816 ret->method->ssl_free(ret);
2817 ret->method = s->method;
2818 ret->method->ssl_new(ret);
2820 if (s->cert != NULL) {
2821 if (ret->cert != NULL) {
2822 ssl_cert_free(ret->cert);
2824 ret->cert = ssl_cert_dup(s->cert);
2825 if (ret->cert == NULL)
2829 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length);
2832 ret->options = s->options;
2833 ret->mode = s->mode;
2834 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2835 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2836 ret->msg_callback = s->msg_callback;
2837 ret->msg_callback_arg = s->msg_callback_arg;
2838 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2839 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2840 ret->generate_session_id = s->generate_session_id;
2842 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2844 ret->debug = s->debug;
2846 /* copy app data, a little dangerous perhaps */
2847 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2850 /* setup rbio, and wbio */
2851 if (s->rbio != NULL) {
2852 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2855 if (s->wbio != NULL) {
2856 if (s->wbio != s->rbio) {
2857 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2860 ret->wbio = ret->rbio;
2862 ret->rwstate = s->rwstate;
2863 ret->in_handshake = s->in_handshake;
2864 ret->handshake_func = s->handshake_func;
2865 ret->server = s->server;
2866 ret->renegotiate = s->renegotiate;
2867 ret->new_session = s->new_session;
2868 ret->quiet_shutdown = s->quiet_shutdown;
2869 ret->shutdown = s->shutdown;
2870 ret->state = s->state; /* SSL_dup does not really work at any state,
2872 ret->rstate = s->rstate;
2873 ret->init_num = 0; /* would have to copy ret->init_buf,
2874 * ret->init_msg, ret->init_num,
2878 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2880 /* dup the cipher_list and cipher_list_by_id stacks */
2881 if (s->cipher_list != NULL) {
2882 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2885 if (s->cipher_list_by_id != NULL)
2886 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2890 /* Dup the client_CA list */
2891 if (s->client_CA != NULL) {
2892 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2894 ret->client_CA = sk;
2895 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2896 xn = sk_X509_NAME_value(sk, i);
2897 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2913 void ssl_clear_cipher_ctx(SSL *s)
2915 if (s->enc_read_ctx != NULL) {
2916 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2917 OPENSSL_free(s->enc_read_ctx);
2918 s->enc_read_ctx = NULL;
2920 if (s->enc_write_ctx != NULL) {
2921 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2922 OPENSSL_free(s->enc_write_ctx);
2923 s->enc_write_ctx = NULL;
2925 #ifndef OPENSSL_NO_COMP
2926 if (s->expand != NULL) {
2927 COMP_CTX_free(s->expand);
2930 if (s->compress != NULL) {
2931 COMP_CTX_free(s->compress);
2937 X509 *SSL_get_certificate(const SSL *s)
2939 if (s->cert != NULL)
2940 return (s->cert->key->x509);
2945 EVP_PKEY *SSL_get_privatekey(const SSL *s)
2947 if (s->cert != NULL)
2948 return (s->cert->key->privatekey);
2953 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2955 if (ctx->cert != NULL)
2956 return ctx->cert->key->x509;
2961 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2963 if (ctx->cert != NULL)
2964 return ctx->cert->key->privatekey;
2969 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2971 if ((s->session != NULL) && (s->session->cipher != NULL))
2972 return (s->session->cipher);
2976 #ifdef OPENSSL_NO_COMP
2977 const void *SSL_get_current_compression(SSL *s)
2982 const void *SSL_get_current_expansion(SSL *s)
2988 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2990 if (s->compress != NULL)
2991 return (s->compress->meth);
2995 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2997 if (s->expand != NULL)
2998 return (s->expand->meth);
3003 int ssl_init_wbio_buffer(SSL *s, int push)
3007 if (s->bbio == NULL) {
3008 bbio = BIO_new(BIO_f_buffer());
3014 if (s->bbio == s->wbio)
3015 s->wbio = BIO_pop(s->wbio);
3017 (void)BIO_reset(bbio);
3018 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3019 if (!BIO_set_read_buffer_size(bbio, 1)) {
3020 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3024 if (s->wbio != bbio)
3025 s->wbio = BIO_push(bbio, s->wbio);
3027 if (s->wbio == bbio)
3028 s->wbio = BIO_pop(bbio);
3033 void ssl_free_wbio_buffer(SSL *s)
3035 if (s->bbio == NULL)
3038 if (s->bbio == s->wbio) {
3039 /* remove buffering */
3040 s->wbio = BIO_pop(s->wbio);
3041 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
3042 * adding one more preprocessor symbol */
3043 assert(s->wbio != NULL);
3050 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3052 ctx->quiet_shutdown = mode;
3055 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3057 return (ctx->quiet_shutdown);
3060 void SSL_set_quiet_shutdown(SSL *s, int mode)
3062 s->quiet_shutdown = mode;
3065 int SSL_get_quiet_shutdown(const SSL *s)
3067 return (s->quiet_shutdown);
3070 void SSL_set_shutdown(SSL *s, int mode)
3075 int SSL_get_shutdown(const SSL *s)
3077 return (s->shutdown);
3080 int SSL_version(const SSL *s)
3082 return (s->version);
3085 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3090 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3092 CERT *ocert = ssl->cert;
3093 if (ssl->ctx == ctx)
3095 #ifndef OPENSSL_NO_TLSEXT
3097 ctx = ssl->initial_ctx;
3099 ssl->cert = ssl_cert_dup(ctx->cert);
3101 /* Preserve any already negotiated parameters */
3103 ssl->cert->peer_sigalgs = ocert->peer_sigalgs;
3104 ssl->cert->peer_sigalgslen = ocert->peer_sigalgslen;
3105 ocert->peer_sigalgs = NULL;
3106 ssl->cert->ciphers_raw = ocert->ciphers_raw;
3107 ssl->cert->ciphers_rawlen = ocert->ciphers_rawlen;
3108 ocert->ciphers_raw = NULL;
3110 ssl_cert_free(ocert);
3114 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3115 * so setter APIs must prevent invalid lengths from entering the system.
3117 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3120 * If the session ID context matches that of the parent SSL_CTX,
3121 * inherit it from the new SSL_CTX as well. If however the context does
3122 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3123 * leave it unchanged.
3125 if ((ssl->ctx != NULL) &&
3126 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3127 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3128 ssl->sid_ctx_length = ctx->sid_ctx_length;
3129 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3132 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3133 if (ssl->ctx != NULL)
3134 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3140 #ifndef OPENSSL_NO_STDIO
3141 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3143 return (X509_STORE_set_default_paths(ctx->cert_store));
3146 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3149 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3153 void SSL_set_info_callback(SSL *ssl,
3154 void (*cb) (const SSL *ssl, int type, int val))
3156 ssl->info_callback = cb;
3160 * One compiler (Diab DCC) doesn't like argument names in returned function
3163 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3166 return ssl->info_callback;
3169 int SSL_state(const SSL *ssl)
3171 return (ssl->state);
3174 void SSL_set_state(SSL *ssl, int state)
3179 void SSL_set_verify_result(SSL *ssl, long arg)
3181 ssl->verify_result = arg;
3184 long SSL_get_verify_result(const SSL *ssl)
3186 return (ssl->verify_result);
3189 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3190 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3192 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3193 new_func, dup_func, free_func);
3196 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3198 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3201 void *SSL_get_ex_data(const SSL *s, int idx)
3203 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3206 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3207 CRYPTO_EX_dup *dup_func,
3208 CRYPTO_EX_free *free_func)
3210 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3211 new_func, dup_func, free_func);
3214 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3216 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3219 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3221 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3229 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3231 return (ctx->cert_store);
3234 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3236 if (ctx->cert_store != NULL)
3237 X509_STORE_free(ctx->cert_store);
3238 ctx->cert_store = store;
3241 int SSL_want(const SSL *s)
3243 return (s->rwstate);
3247 * \brief Set the callback for generating temporary RSA keys.
3248 * \param ctx the SSL context.
3249 * \param cb the callback
3252 #ifndef OPENSSL_NO_RSA
3253 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3257 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3260 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3264 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3270 * \brief The RSA temporary key callback function.
3271 * \param ssl the SSL session.
3272 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3273 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3274 * of the required key in bits.
3275 * \return the temporary RSA key.
3276 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3279 RSA *cb(SSL *ssl, int is_export, int keylength)
3285 * \brief Set the callback for generating temporary DH keys.
3286 * \param ctx the SSL context.
3287 * \param dh the callback
3290 #ifndef OPENSSL_NO_DH
3291 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3292 DH *(*dh) (SSL *ssl, int is_export,
3295 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3298 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3301 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3305 #ifndef OPENSSL_NO_ECDH
3306 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3307 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3310 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3311 (void (*)(void))ecdh);
3314 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3315 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3318 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3322 #ifndef OPENSSL_NO_PSK
3323 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3325 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3326 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3327 SSL_R_DATA_LENGTH_TOO_LONG);
3330 if (ctx->psk_identity_hint != NULL)
3331 OPENSSL_free(ctx->psk_identity_hint);
3332 if (identity_hint != NULL) {
3333 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3334 if (ctx->psk_identity_hint == NULL)
3337 ctx->psk_identity_hint = NULL;
3341 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3346 if (s->session == NULL)
3347 return 1; /* session not created yet, ignored */
3349 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3350 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3353 if (s->session->psk_identity_hint != NULL)
3354 OPENSSL_free(s->session->psk_identity_hint);
3355 if (identity_hint != NULL) {
3356 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3357 if (s->session->psk_identity_hint == NULL)
3360 s->session->psk_identity_hint = NULL;
3364 const char *SSL_get_psk_identity_hint(const SSL *s)
3366 if (s == NULL || s->session == NULL)
3368 return (s->session->psk_identity_hint);
3371 const char *SSL_get_psk_identity(const SSL *s)
3373 if (s == NULL || s->session == NULL)
3375 return (s->session->psk_identity);
3378 void SSL_set_psk_client_callback(SSL *s,
3379 unsigned int (*cb) (SSL *ssl,
3388 s->psk_client_callback = cb;
3391 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3392 unsigned int (*cb) (SSL *ssl,
3401 ctx->psk_client_callback = cb;
3404 void SSL_set_psk_server_callback(SSL *s,
3405 unsigned int (*cb) (SSL *ssl,
3406 const char *identity,
3411 s->psk_server_callback = cb;
3414 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3415 unsigned int (*cb) (SSL *ssl,
3416 const char *identity,
3421 ctx->psk_server_callback = cb;
3425 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3426 void (*cb) (int write_p, int version,
3427 int content_type, const void *buf,
3428 size_t len, SSL *ssl, void *arg))
3430 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3433 void SSL_set_msg_callback(SSL *ssl,
3434 void (*cb) (int write_p, int version,
3435 int content_type, const void *buf,
3436 size_t len, SSL *ssl, void *arg))
3438 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3441 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3442 int (*cb) (SSL *ssl,
3446 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3447 (void (*)(void))cb);
3450 void SSL_set_not_resumable_session_callback(SSL *ssl,
3451 int (*cb) (SSL *ssl,
3452 int is_forward_secure))
3454 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3455 (void (*)(void))cb);
3459 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3460 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3461 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3465 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3467 ssl_clear_hash_ctx(hash);
3468 *hash = EVP_MD_CTX_create();
3470 EVP_DigestInit_ex(*hash, md, NULL);
3474 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3478 EVP_MD_CTX_destroy(*hash);
3482 void SSL_set_debug(SSL *s, int debug)
3487 int SSL_cache_hit(SSL *s)
3492 int SSL_is_server(SSL *s)
3497 void SSL_set_security_level(SSL *s, int level)
3499 s->cert->sec_level = level;
3502 int SSL_get_security_level(const SSL *s)
3504 return s->cert->sec_level;
3507 void SSL_set_security_callback(SSL *s,
3508 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3509 int bits, int nid, void *other,
3512 s->cert->sec_cb = cb;
3515 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3517 void *other, void *ex) {
3518 return s->cert->sec_cb;
3521 void SSL_set0_security_ex_data(SSL *s, void *ex)
3523 s->cert->sec_ex = ex;
3526 void *SSL_get0_security_ex_data(const SSL *s)
3528 return s->cert->sec_ex;
3531 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3533 ctx->cert->sec_level = level;
3536 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3538 return ctx->cert->sec_level;
3541 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3542 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3543 int bits, int nid, void *other,
3546 ctx->cert->sec_cb = cb;
3549 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3555 return ctx->cert->sec_cb;
3558 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3560 ctx->cert->sec_ex = ex;
3563 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3565 return ctx->cert->sec_ex;
3568 IMPLEMENT_STACK_OF(SSL_CIPHER)
3570 IMPLEMENT_STACK_OF(SSL_COMP)
3572 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);