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);
1137 case SSL_CTRL_GET_EXTMS_SUPPORT:
1138 if (!s->session || SSL_in_init(s) || s->in_handshake)
1140 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1145 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1149 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1152 case SSL_CTRL_SET_MSG_CALLBACK:
1153 s->msg_callback = (void (*)
1154 (int write_p, int version, int content_type,
1155 const void *buf, size_t len, SSL *ssl,
1160 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1164 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1166 return ctx->sessions;
1169 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1172 /* For some cases with ctx == NULL perform syntax checks */
1175 #ifndef OPENSSL_NO_EC
1176 case SSL_CTRL_SET_CURVES_LIST:
1177 return tls1_set_curves_list(NULL, NULL, parg);
1179 case SSL_CTRL_SET_SIGALGS_LIST:
1180 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1181 return tls1_set_sigalgs_list(NULL, parg, 0);
1188 case SSL_CTRL_GET_READ_AHEAD:
1189 return (ctx->read_ahead);
1190 case SSL_CTRL_SET_READ_AHEAD:
1191 l = ctx->read_ahead;
1192 ctx->read_ahead = larg;
1195 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1196 ctx->msg_callback_arg = parg;
1199 case SSL_CTRL_GET_MAX_CERT_LIST:
1200 return (ctx->max_cert_list);
1201 case SSL_CTRL_SET_MAX_CERT_LIST:
1202 l = ctx->max_cert_list;
1203 ctx->max_cert_list = larg;
1206 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1207 l = ctx->session_cache_size;
1208 ctx->session_cache_size = larg;
1210 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1211 return (ctx->session_cache_size);
1212 case SSL_CTRL_SET_SESS_CACHE_MODE:
1213 l = ctx->session_cache_mode;
1214 ctx->session_cache_mode = larg;
1216 case SSL_CTRL_GET_SESS_CACHE_MODE:
1217 return (ctx->session_cache_mode);
1219 case SSL_CTRL_SESS_NUMBER:
1220 return (lh_SSL_SESSION_num_items(ctx->sessions));
1221 case SSL_CTRL_SESS_CONNECT:
1222 return (ctx->stats.sess_connect);
1223 case SSL_CTRL_SESS_CONNECT_GOOD:
1224 return (ctx->stats.sess_connect_good);
1225 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1226 return (ctx->stats.sess_connect_renegotiate);
1227 case SSL_CTRL_SESS_ACCEPT:
1228 return (ctx->stats.sess_accept);
1229 case SSL_CTRL_SESS_ACCEPT_GOOD:
1230 return (ctx->stats.sess_accept_good);
1231 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1232 return (ctx->stats.sess_accept_renegotiate);
1233 case SSL_CTRL_SESS_HIT:
1234 return (ctx->stats.sess_hit);
1235 case SSL_CTRL_SESS_CB_HIT:
1236 return (ctx->stats.sess_cb_hit);
1237 case SSL_CTRL_SESS_MISSES:
1238 return (ctx->stats.sess_miss);
1239 case SSL_CTRL_SESS_TIMEOUTS:
1240 return (ctx->stats.sess_timeout);
1241 case SSL_CTRL_SESS_CACHE_FULL:
1242 return (ctx->stats.sess_cache_full);
1243 case SSL_CTRL_OPTIONS:
1244 return (ctx->options |= larg);
1245 case SSL_CTRL_CLEAR_OPTIONS:
1246 return (ctx->options &= ~larg);
1248 return (ctx->mode |= larg);
1249 case SSL_CTRL_CLEAR_MODE:
1250 return (ctx->mode &= ~larg);
1251 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1252 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1254 ctx->max_send_fragment = larg;
1256 case SSL_CTRL_CERT_FLAGS:
1257 return (ctx->cert->cert_flags |= larg);
1258 case SSL_CTRL_CLEAR_CERT_FLAGS:
1259 return (ctx->cert->cert_flags &= ~larg);
1261 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1265 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1268 case SSL_CTRL_SET_MSG_CALLBACK:
1269 ctx->msg_callback = (void (*)
1270 (int write_p, int version, int content_type,
1271 const void *buf, size_t len, SSL *ssl,
1276 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1280 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1288 return ((l > 0) ? 1 : -1);
1291 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1292 const SSL_CIPHER *const *bp)
1296 l = (*ap)->id - (*bp)->id;
1300 return ((l > 0) ? 1 : -1);
1303 /** return a STACK of the ciphers available for the SSL and in order of
1305 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1308 if (s->cipher_list != NULL) {
1309 return (s->cipher_list);
1310 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1311 return (s->ctx->cipher_list);
1317 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1319 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1321 ciphers = SSL_get_ciphers(s);
1324 ssl_set_client_disabled(s);
1325 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1326 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1327 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1329 sk = sk_SSL_CIPHER_new_null();
1332 if (!sk_SSL_CIPHER_push(sk, c)) {
1333 sk_SSL_CIPHER_free(sk);
1341 /** return a STACK of the ciphers available for the SSL and in order of
1343 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1346 if (s->cipher_list_by_id != NULL) {
1347 return (s->cipher_list_by_id);
1348 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1349 return (s->ctx->cipher_list_by_id);
1355 /** The old interface to get the same thing as SSL_get_ciphers() */
1356 const char *SSL_get_cipher_list(const SSL *s, int n)
1359 STACK_OF(SSL_CIPHER) *sk;
1363 sk = SSL_get_ciphers(s);
1364 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1366 c = sk_SSL_CIPHER_value(sk, n);
1372 /** specify the ciphers to be used by default by the SSL_CTX */
1373 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1375 STACK_OF(SSL_CIPHER) *sk;
1377 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1378 &ctx->cipher_list_by_id, str, ctx->cert);
1380 * ssl_create_cipher_list may return an empty stack if it was unable to
1381 * find a cipher matching the given rule string (for example if the rule
1382 * string specifies a cipher which has been disabled). This is not an
1383 * error as far as ssl_create_cipher_list is concerned, and hence
1384 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1388 else if (sk_SSL_CIPHER_num(sk) == 0) {
1389 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1395 /** specify the ciphers to be used by the SSL */
1396 int SSL_set_cipher_list(SSL *s, const char *str)
1398 STACK_OF(SSL_CIPHER) *sk;
1400 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1401 &s->cipher_list_by_id, str, s->cert);
1402 /* see comment in SSL_CTX_set_cipher_list */
1405 else if (sk_SSL_CIPHER_num(sk) == 0) {
1406 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1412 /* works well for SSLv2, not so good for SSLv3 */
1413 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1416 STACK_OF(SSL_CIPHER) *sk;
1420 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1424 sk = s->session->ciphers;
1426 if (sk_SSL_CIPHER_num(sk) == 0)
1429 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1432 c = sk_SSL_CIPHER_value(sk, i);
1433 n = strlen(c->name);
1449 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1451 int (*put_cb) (const SSL_CIPHER *,
1457 int empty_reneg_info_scsv = !s->renegotiate;
1458 /* Set disabled masks for this session */
1459 ssl_set_client_disabled(s);
1465 put_cb = s->method->put_cipher_by_char;
1467 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1468 c = sk_SSL_CIPHER_value(sk, i);
1469 /* Skip disabled ciphers */
1470 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1472 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1473 if (c->id == SSL3_CK_SCSV) {
1474 if (!empty_reneg_info_scsv)
1477 empty_reneg_info_scsv = 0;
1484 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1488 if (empty_reneg_info_scsv) {
1489 static SSL_CIPHER scsv = {
1490 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1492 j = put_cb(&scsv, p);
1494 #ifdef OPENSSL_RI_DEBUG
1496 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1499 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1500 static SSL_CIPHER scsv = {
1501 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1503 j = put_cb(&scsv, p);
1511 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1513 STACK_OF(SSL_CIPHER) **skp)
1515 const SSL_CIPHER *c;
1516 STACK_OF(SSL_CIPHER) *sk;
1520 s->s3->send_connection_binding = 0;
1522 n = ssl_put_cipher_by_char(s, NULL, NULL);
1523 if (n == 0 || (num % n) != 0) {
1524 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1525 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1528 if ((skp == NULL) || (*skp == NULL))
1529 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1532 sk_SSL_CIPHER_zero(sk);
1535 if (s->cert->ciphers_raw)
1536 OPENSSL_free(s->cert->ciphers_raw);
1537 s->cert->ciphers_raw = BUF_memdup(p, num);
1538 if (s->cert->ciphers_raw == NULL) {
1539 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1542 s->cert->ciphers_rawlen = (size_t)num;
1544 for (i = 0; i < num; i += n) {
1545 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1546 if (s->s3 && (n != 3 || !p[0]) &&
1547 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1548 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1549 /* SCSV fatal if renegotiating */
1550 if (s->renegotiate) {
1551 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1552 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1553 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1556 s->s3->send_connection_binding = 1;
1558 #ifdef OPENSSL_RI_DEBUG
1559 fprintf(stderr, "SCSV received by server\n");
1564 /* Check for TLS_FALLBACK_SCSV */
1565 if ((n != 3 || !p[0]) &&
1566 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1567 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1569 * The SCSV indicates that the client previously tried a higher
1570 * version. Fail if the current version is an unexpected
1573 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1574 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1575 SSL_R_INAPPROPRIATE_FALLBACK);
1577 ssl3_send_alert(s, SSL3_AL_FATAL,
1578 SSL_AD_INAPPROPRIATE_FALLBACK);
1585 c = ssl_get_cipher_by_char(s, p);
1588 if (!sk_SSL_CIPHER_push(sk, c)) {
1589 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1599 if ((skp == NULL) || (*skp == NULL))
1600 sk_SSL_CIPHER_free(sk);
1604 #ifndef OPENSSL_NO_TLSEXT
1605 /** return a servername extension value if provided in Client Hello, or NULL.
1606 * So far, only host_name types are defined (RFC 3546).
1609 const char *SSL_get_servername(const SSL *s, const int type)
1611 if (type != TLSEXT_NAMETYPE_host_name)
1614 return s->session && !s->tlsext_hostname ?
1615 s->session->tlsext_hostname : s->tlsext_hostname;
1618 int SSL_get_servername_type(const SSL *s)
1621 && (!s->tlsext_hostname ? s->session->
1622 tlsext_hostname : s->tlsext_hostname))
1623 return TLSEXT_NAMETYPE_host_name;
1628 * SSL_select_next_proto implements the standard protocol selection. It is
1629 * expected that this function is called from the callback set by
1630 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1631 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1632 * not included in the length. A byte string of length 0 is invalid. No byte
1633 * string may be truncated. The current, but experimental algorithm for
1634 * selecting the protocol is: 1) If the server doesn't support NPN then this
1635 * is indicated to the callback. In this case, the client application has to
1636 * abort the connection or have a default application level protocol. 2) If
1637 * the server supports NPN, but advertises an empty list then the client
1638 * selects the first protcol in its list, but indicates via the API that this
1639 * fallback case was enacted. 3) Otherwise, the client finds the first
1640 * protocol in the server's list that it supports and selects this protocol.
1641 * This is because it's assumed that the server has better information about
1642 * which protocol a client should use. 4) If the client doesn't support any
1643 * of the server's advertised protocols, then this is treated the same as
1644 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1645 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1647 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1648 const unsigned char *server,
1649 unsigned int server_len,
1650 const unsigned char *client,
1651 unsigned int client_len)
1654 const unsigned char *result;
1655 int status = OPENSSL_NPN_UNSUPPORTED;
1658 * For each protocol in server preference order, see if we support it.
1660 for (i = 0; i < server_len;) {
1661 for (j = 0; j < client_len;) {
1662 if (server[i] == client[j] &&
1663 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1664 /* We found a match */
1665 result = &server[i];
1666 status = OPENSSL_NPN_NEGOTIATED;
1676 /* There's no overlap between our protocols and the server's list. */
1678 status = OPENSSL_NPN_NO_OVERLAP;
1681 *out = (unsigned char *)result + 1;
1682 *outlen = result[0];
1686 # ifndef OPENSSL_NO_NEXTPROTONEG
1688 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1689 * client's requested protocol for this connection and returns 0. If the
1690 * client didn't request any protocol, then *data is set to NULL. Note that
1691 * the client can request any protocol it chooses. The value returned from
1692 * this function need not be a member of the list of supported protocols
1693 * provided by the callback.
1695 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1698 *data = s->next_proto_negotiated;
1702 *len = s->next_proto_negotiated_len;
1707 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1708 * a TLS server needs a list of supported protocols for Next Protocol
1709 * Negotiation. The returned list must be in wire format. The list is
1710 * returned by setting |out| to point to it and |outlen| to its length. This
1711 * memory will not be modified, but one should assume that the SSL* keeps a
1712 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1713 * wishes to advertise. Otherwise, no such extension will be included in the
1716 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1717 int (*cb) (SSL *ssl,
1720 unsigned int *outlen,
1721 void *arg), void *arg)
1723 ctx->next_protos_advertised_cb = cb;
1724 ctx->next_protos_advertised_cb_arg = arg;
1728 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1729 * client needs to select a protocol from the server's provided list. |out|
1730 * must be set to point to the selected protocol (which may be within |in|).
1731 * The length of the protocol name must be written into |outlen|. The
1732 * server's advertised protocols are provided in |in| and |inlen|. The
1733 * callback can assume that |in| is syntactically valid. The client must
1734 * select a protocol. It is fatal to the connection if this callback returns
1735 * a value other than SSL_TLSEXT_ERR_OK.
1737 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1738 int (*cb) (SSL *s, unsigned char **out,
1739 unsigned char *outlen,
1740 const unsigned char *in,
1742 void *arg), void *arg)
1744 ctx->next_proto_select_cb = cb;
1745 ctx->next_proto_select_cb_arg = arg;
1750 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1751 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1752 * length-prefixed strings). Returns 0 on success.
1754 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1755 unsigned protos_len)
1757 if (ctx->alpn_client_proto_list)
1758 OPENSSL_free(ctx->alpn_client_proto_list);
1760 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1761 if (!ctx->alpn_client_proto_list)
1763 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1764 ctx->alpn_client_proto_list_len = protos_len;
1770 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1771 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1772 * length-prefixed strings). Returns 0 on success.
1774 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1775 unsigned protos_len)
1777 if (ssl->alpn_client_proto_list)
1778 OPENSSL_free(ssl->alpn_client_proto_list);
1780 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1781 if (!ssl->alpn_client_proto_list)
1783 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1784 ssl->alpn_client_proto_list_len = protos_len;
1790 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1791 * called during ClientHello processing in order to select an ALPN protocol
1792 * from the client's list of offered protocols.
1794 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1795 int (*cb) (SSL *ssl,
1796 const unsigned char **out,
1797 unsigned char *outlen,
1798 const unsigned char *in,
1800 void *arg), void *arg)
1802 ctx->alpn_select_cb = cb;
1803 ctx->alpn_select_cb_arg = arg;
1807 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1808 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1809 * (not including the leading length-prefix byte). If the server didn't
1810 * respond with a negotiated protocol then |*len| will be zero.
1812 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1817 *data = ssl->s3->alpn_selected;
1821 *len = ssl->s3->alpn_selected_len;
1824 #endif /* !OPENSSL_NO_TLSEXT */
1826 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1827 const char *label, size_t llen,
1828 const unsigned char *p, size_t plen,
1831 if (s->version < TLS1_VERSION)
1834 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1839 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1844 ((unsigned int)a->session_id[0]) |
1845 ((unsigned int)a->session_id[1] << 8L) |
1846 ((unsigned long)a->session_id[2] << 16L) |
1847 ((unsigned long)a->session_id[3] << 24L);
1852 * NB: If this function (or indeed the hash function which uses a sort of
1853 * coarser function than this one) is changed, ensure
1854 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1855 * being able to construct an SSL_SESSION that will collide with any existing
1856 * session with a matching session ID.
1858 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1860 if (a->ssl_version != b->ssl_version)
1862 if (a->session_id_length != b->session_id_length)
1864 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1868 * These wrapper functions should remain rather than redeclaring
1869 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1870 * variable. The reason is that the functions aren't static, they're exposed
1873 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1874 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1876 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1878 SSL_CTX *ret = NULL;
1881 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1885 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1886 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1890 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1891 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1894 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1898 memset(ret, 0, sizeof(SSL_CTX));
1902 ret->cert_store = NULL;
1903 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1904 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1905 ret->session_cache_head = NULL;
1906 ret->session_cache_tail = NULL;
1908 /* We take the system default */
1909 ret->session_timeout = meth->get_timeout();
1911 ret->new_session_cb = 0;
1912 ret->remove_session_cb = 0;
1913 ret->get_session_cb = 0;
1914 ret->generate_session_id = 0;
1916 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1918 ret->references = 1;
1919 ret->quiet_shutdown = 0;
1921 /* ret->cipher=NULL;*/
1923 ret->s2->challenge=NULL;
1924 ret->master_key=NULL;
1925 ret->s2->conn_id=NULL; */
1927 ret->info_callback = NULL;
1929 ret->app_verify_callback = 0;
1930 ret->app_verify_arg = NULL;
1932 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1933 ret->read_ahead = 0;
1934 ret->msg_callback = 0;
1935 ret->msg_callback_arg = NULL;
1936 ret->verify_mode = SSL_VERIFY_NONE;
1938 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */
1940 ret->sid_ctx_length = 0;
1941 ret->default_verify_callback = NULL;
1942 if ((ret->cert = ssl_cert_new()) == NULL)
1945 ret->default_passwd_callback = 0;
1946 ret->default_passwd_callback_userdata = NULL;
1947 ret->client_cert_cb = 0;
1948 ret->app_gen_cookie_cb = 0;
1949 ret->app_verify_cookie_cb = 0;
1951 ret->sessions = lh_SSL_SESSION_new();
1952 if (ret->sessions == NULL)
1954 ret->cert_store = X509_STORE_new();
1955 if (ret->cert_store == NULL)
1958 ssl_create_cipher_list(ret->method,
1959 &ret->cipher_list, &ret->cipher_list_by_id,
1960 SSL_DEFAULT_CIPHER_LIST, ret->cert);
1961 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1962 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1966 ret->param = X509_VERIFY_PARAM_new();
1970 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1971 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1974 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1975 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1979 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1982 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1984 ret->extra_certs = NULL;
1985 /* No compression for DTLS */
1986 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1987 ret->comp_methods = SSL_COMP_get_compression_methods();
1989 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1991 #ifndef OPENSSL_NO_TLSEXT
1992 ret->tlsext_servername_callback = 0;
1993 ret->tlsext_servername_arg = NULL;
1994 /* Setup RFC4507 ticket keys */
1995 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1996 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1997 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1998 ret->options |= SSL_OP_NO_TICKET;
2000 ret->tlsext_status_cb = 0;
2001 ret->tlsext_status_arg = NULL;
2003 # ifndef OPENSSL_NO_NEXTPROTONEG
2004 ret->next_protos_advertised_cb = 0;
2005 ret->next_proto_select_cb = 0;
2008 #ifndef OPENSSL_NO_PSK
2009 ret->psk_identity_hint = NULL;
2010 ret->psk_client_callback = NULL;
2011 ret->psk_server_callback = NULL;
2013 #ifndef OPENSSL_NO_SRP
2014 SSL_CTX_SRP_CTX_init(ret);
2016 #ifndef OPENSSL_NO_ENGINE
2017 ret->client_cert_engine = NULL;
2018 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2019 # define eng_strx(x) #x
2020 # define eng_str(x) eng_strx(x)
2021 /* Use specific client engine automatically... ignore errors */
2024 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2027 ENGINE_load_builtin_engines();
2028 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2030 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2036 * Default is to connect to non-RI servers. When RI is more widely
2037 * deployed might change this.
2039 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2043 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2050 void SSL_CTX_free(SSL_CTX *a)
2057 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2059 REF_PRINT("SSL_CTX", a);
2065 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
2071 X509_VERIFY_PARAM_free(a->param);
2074 * Free internal session cache. However: the remove_cb() may reference
2075 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2076 * after the sessions were flushed.
2077 * As the ex_data handling routines might also touch the session cache,
2078 * the most secure solution seems to be: empty (flush) the cache, then
2079 * free ex_data, then finally free the cache.
2080 * (See ticket [openssl.org #212].)
2082 if (a->sessions != NULL)
2083 SSL_CTX_flush_sessions(a, 0);
2085 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2087 if (a->sessions != NULL)
2088 lh_SSL_SESSION_free(a->sessions);
2090 if (a->cert_store != NULL)
2091 X509_STORE_free(a->cert_store);
2092 if (a->cipher_list != NULL)
2093 sk_SSL_CIPHER_free(a->cipher_list);
2094 if (a->cipher_list_by_id != NULL)
2095 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2096 if (a->cert != NULL)
2097 ssl_cert_free(a->cert);
2098 if (a->client_CA != NULL)
2099 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2100 if (a->extra_certs != NULL)
2101 sk_X509_pop_free(a->extra_certs, X509_free);
2102 #if 0 /* This should never be done, since it
2103 * removes a global database */
2104 if (a->comp_methods != NULL)
2105 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free);
2107 a->comp_methods = NULL;
2110 #ifndef OPENSSL_NO_SRTP
2111 if (a->srtp_profiles)
2112 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2115 #ifndef OPENSSL_NO_PSK
2116 if (a->psk_identity_hint)
2117 OPENSSL_free(a->psk_identity_hint);
2119 #ifndef OPENSSL_NO_SRP
2120 SSL_CTX_SRP_CTX_free(a);
2122 #ifndef OPENSSL_NO_ENGINE
2123 if (a->client_cert_engine)
2124 ENGINE_finish(a->client_cert_engine);
2127 #ifndef OPENSSL_NO_TLSEXT
2128 # ifndef OPENSSL_NO_EC
2129 if (a->tlsext_ecpointformatlist)
2130 OPENSSL_free(a->tlsext_ecpointformatlist);
2131 if (a->tlsext_ellipticcurvelist)
2132 OPENSSL_free(a->tlsext_ellipticcurvelist);
2133 # endif /* OPENSSL_NO_EC */
2134 if (a->alpn_client_proto_list != NULL)
2135 OPENSSL_free(a->alpn_client_proto_list);
2141 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2143 ctx->default_passwd_callback = cb;
2146 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2148 ctx->default_passwd_callback_userdata = u;
2151 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2152 int (*cb) (X509_STORE_CTX *, void *),
2155 ctx->app_verify_callback = cb;
2156 ctx->app_verify_arg = arg;
2159 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2160 int (*cb) (int, X509_STORE_CTX *))
2162 ctx->verify_mode = mode;
2163 ctx->default_verify_callback = cb;
2166 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2168 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2171 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2174 ssl_cert_set_cert_cb(c->cert, cb, arg);
2177 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2179 ssl_cert_set_cert_cb(s->cert, cb, arg);
2182 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2185 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2186 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2187 int rsa_tmp_export, dh_tmp_export, kl;
2188 unsigned long mask_k, mask_a, emask_k, emask_a;
2189 #ifndef OPENSSL_NO_ECDSA
2190 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2192 #ifndef OPENSSL_NO_ECDH
2193 int have_ecdh_tmp, ecdh_ok;
2195 #ifndef OPENSSL_NO_EC
2197 EVP_PKEY *ecc_pkey = NULL;
2198 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2203 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2205 #ifndef OPENSSL_NO_RSA
2206 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2207 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2208 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2210 rsa_tmp = rsa_tmp_export = 0;
2212 #ifndef OPENSSL_NO_DH
2213 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2214 dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2216 && DH_size(c->dh_tmp) * 8 <= kl));
2218 dh_tmp = dh_tmp_export = 0;
2221 #ifndef OPENSSL_NO_ECDH
2222 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2224 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2225 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID;
2226 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2227 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2228 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2229 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2230 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2231 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2232 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID;
2233 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2234 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2235 /* FIX THIS EAY EAY EAY */
2236 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID;
2237 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2238 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2239 #ifndef OPENSSL_NO_EC
2240 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID;
2249 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2250 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2251 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2254 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2255 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2256 mask_k |= SSL_kGOST;
2257 mask_a |= SSL_aGOST01;
2259 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2260 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2261 mask_k |= SSL_kGOST;
2262 mask_a |= SSL_aGOST94;
2265 if (rsa_enc || (rsa_tmp && rsa_sign))
2267 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2268 emask_k |= SSL_kRSA;
2271 /* The match needs to be both kDHE and aRSA or aDSA, so don't worry */
2272 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign))
2274 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2275 (rsa_enc || rsa_sign || dsa_sign))
2276 emask_k |= SSL_kDHE;
2280 emask_k |= SSL_kDHE;
2288 emask_k |= SSL_kDHr;
2293 emask_k |= SSL_kDHd;
2295 if (emask_k & (SSL_kDHr | SSL_kDHd))
2298 if (rsa_enc || rsa_sign) {
2300 emask_a |= SSL_aRSA;
2305 emask_a |= SSL_aDSS;
2308 mask_a |= SSL_aNULL;
2309 emask_a |= SSL_aNULL;
2311 #ifndef OPENSSL_NO_KRB5
2312 mask_k |= SSL_kKRB5;
2313 mask_a |= SSL_aKRB5;
2314 emask_k |= SSL_kKRB5;
2315 emask_a |= SSL_aKRB5;
2319 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2320 * depending on the key usage extension.
2322 #ifndef OPENSSL_NO_EC
2323 if (have_ecc_cert) {
2324 cpk = &c->pkeys[SSL_PKEY_ECC];
2326 /* This call populates extension flags (ex_flags) */
2327 X509_check_purpose(x, -1, 0);
2328 # ifndef OPENSSL_NO_ECDH
2329 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2330 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2332 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2333 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2334 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2336 ecc_pkey = X509_get_pubkey(x);
2337 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2338 EVP_PKEY_free(ecc_pkey);
2339 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2340 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2341 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2343 # ifndef OPENSSL_NO_ECDH
2346 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2347 mask_k |= SSL_kECDHr;
2348 mask_a |= SSL_aECDH;
2349 if (ecc_pkey_size <= 163) {
2350 emask_k |= SSL_kECDHr;
2351 emask_a |= SSL_aECDH;
2355 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2356 mask_k |= SSL_kECDHe;
2357 mask_a |= SSL_aECDH;
2358 if (ecc_pkey_size <= 163) {
2359 emask_k |= SSL_kECDHe;
2360 emask_a |= SSL_aECDH;
2365 # ifndef OPENSSL_NO_ECDSA
2367 mask_a |= SSL_aECDSA;
2368 emask_a |= SSL_aECDSA;
2374 #ifndef OPENSSL_NO_ECDH
2375 if (have_ecdh_tmp) {
2376 mask_k |= SSL_kECDHE;
2377 emask_k |= SSL_kECDHE;
2381 #ifndef OPENSSL_NO_PSK
2384 emask_k |= SSL_kPSK;
2385 emask_a |= SSL_aPSK;
2390 c->export_mask_k = emask_k;
2391 c->export_mask_a = emask_a;
2395 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2396 #define ku_reject(x, usage) \
2397 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2399 #ifndef OPENSSL_NO_EC
2401 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2403 unsigned long alg_k, alg_a;
2404 EVP_PKEY *pkey = NULL;
2406 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2407 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2409 alg_k = cs->algorithm_mkey;
2410 alg_a = cs->algorithm_auth;
2412 if (SSL_C_IS_EXPORT(cs)) {
2413 /* ECDH key length in export ciphers must be <= 163 bits */
2414 pkey = X509_get_pubkey(x);
2417 keysize = EVP_PKEY_bits(pkey);
2418 EVP_PKEY_free(pkey);
2423 /* This call populates the ex_flags field correctly */
2424 X509_check_purpose(x, -1, 0);
2425 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2426 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2427 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2429 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2430 /* key usage, if present, must allow key agreement */
2431 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2432 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2433 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2436 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2437 /* signature alg must be ECDSA */
2438 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2439 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2440 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2444 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2445 /* signature alg must be RSA */
2447 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2448 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2449 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2454 if (alg_a & SSL_aECDSA) {
2455 /* key usage, if present, must allow signing */
2456 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2457 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2458 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2463 return 1; /* all checks are ok */
2468 static int ssl_get_server_cert_index(const SSL *s)
2471 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2472 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2473 idx = SSL_PKEY_RSA_SIGN;
2475 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2479 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2485 if (!s->s3 || !s->s3->tmp.new_cipher)
2487 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2489 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2491 * Broken protocol test: return last used certificate: which may mismatch
2494 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2498 i = ssl_get_server_cert_index(s);
2500 /* This may or may not be an error. */
2505 return &c->pkeys[i];
2508 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2511 unsigned long alg_a;
2515 alg_a = cipher->algorithm_auth;
2518 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2520 * Broken protocol test: use last key: which may mismatch the one
2523 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2524 idx = c->key - c->pkeys;
2528 if ((alg_a & SSL_aDSS) &&
2529 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2530 idx = SSL_PKEY_DSA_SIGN;
2531 else if (alg_a & SSL_aRSA) {
2532 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2533 idx = SSL_PKEY_RSA_SIGN;
2534 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2535 idx = SSL_PKEY_RSA_ENC;
2536 } else if ((alg_a & SSL_aECDSA) &&
2537 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2540 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2544 *pmd = c->pkeys[idx].digest;
2545 return c->pkeys[idx].privatekey;
2548 #ifndef OPENSSL_NO_TLSEXT
2549 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2550 size_t *serverinfo_length)
2554 *serverinfo_length = 0;
2557 i = ssl_get_server_cert_index(s);
2561 if (c->pkeys[i].serverinfo == NULL)
2564 *serverinfo = c->pkeys[i].serverinfo;
2565 *serverinfo_length = c->pkeys[i].serverinfo_length;
2570 void ssl_update_cache(SSL *s, int mode)
2575 * If the session_id_length is 0, we are not supposed to cache it, and it
2576 * would be rather hard to do anyway :-)
2578 if (s->session->session_id_length == 0)
2581 i = s->session_ctx->session_cache_mode;
2582 if ((i & mode) && (!s->hit)
2583 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2584 || SSL_CTX_add_session(s->session_ctx, s->session))
2585 && (s->session_ctx->new_session_cb != NULL)) {
2586 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2587 if (!s->session_ctx->new_session_cb(s, s->session))
2588 SSL_SESSION_free(s->session);
2591 /* auto flush every 255 connections */
2592 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2593 if ((((mode & SSL_SESS_CACHE_CLIENT)
2594 ? s->session_ctx->stats.sess_connect_good
2595 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2596 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2601 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2606 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2611 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2616 if (s->method != meth) {
2617 if (s->handshake_func != NULL)
2618 conn = (s->handshake_func == s->method->ssl_connect);
2620 if (s->method->version == meth->version)
2623 s->method->ssl_free(s);
2625 ret = s->method->ssl_new(s);
2629 s->handshake_func = meth->ssl_connect;
2631 s->handshake_func = meth->ssl_accept;
2636 int SSL_get_error(const SSL *s, int i)
2643 return (SSL_ERROR_NONE);
2646 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2647 * where we do encode the error
2649 if ((l = ERR_peek_error()) != 0) {
2650 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2651 return (SSL_ERROR_SYSCALL);
2653 return (SSL_ERROR_SSL);
2656 if ((i < 0) && SSL_want_read(s)) {
2657 bio = SSL_get_rbio(s);
2658 if (BIO_should_read(bio))
2659 return (SSL_ERROR_WANT_READ);
2660 else if (BIO_should_write(bio))
2662 * This one doesn't make too much sense ... We never try to write
2663 * to the rbio, and an application program where rbio and wbio
2664 * are separate couldn't even know what it should wait for.
2665 * However if we ever set s->rwstate incorrectly (so that we have
2666 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2667 * wbio *are* the same, this test works around that bug; so it
2668 * might be safer to keep it.
2670 return (SSL_ERROR_WANT_WRITE);
2671 else if (BIO_should_io_special(bio)) {
2672 reason = BIO_get_retry_reason(bio);
2673 if (reason == BIO_RR_CONNECT)
2674 return (SSL_ERROR_WANT_CONNECT);
2675 else if (reason == BIO_RR_ACCEPT)
2676 return (SSL_ERROR_WANT_ACCEPT);
2678 return (SSL_ERROR_SYSCALL); /* unknown */
2682 if ((i < 0) && SSL_want_write(s)) {
2683 bio = SSL_get_wbio(s);
2684 if (BIO_should_write(bio))
2685 return (SSL_ERROR_WANT_WRITE);
2686 else if (BIO_should_read(bio))
2688 * See above (SSL_want_read(s) with BIO_should_write(bio))
2690 return (SSL_ERROR_WANT_READ);
2691 else if (BIO_should_io_special(bio)) {
2692 reason = BIO_get_retry_reason(bio);
2693 if (reason == BIO_RR_CONNECT)
2694 return (SSL_ERROR_WANT_CONNECT);
2695 else if (reason == BIO_RR_ACCEPT)
2696 return (SSL_ERROR_WANT_ACCEPT);
2698 return (SSL_ERROR_SYSCALL);
2701 if ((i < 0) && SSL_want_x509_lookup(s)) {
2702 return (SSL_ERROR_WANT_X509_LOOKUP);
2706 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2707 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2708 return (SSL_ERROR_ZERO_RETURN);
2710 return (SSL_ERROR_SYSCALL);
2713 int SSL_do_handshake(SSL *s)
2717 if (s->handshake_func == NULL) {
2718 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2722 s->method->ssl_renegotiate_check(s);
2724 if (SSL_in_init(s) || SSL_in_before(s)) {
2725 ret = s->handshake_func(s);
2731 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2732 * calls will reset it
2734 void SSL_set_accept_state(SSL *s)
2738 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2739 s->handshake_func = s->method->ssl_accept;
2740 /* clear the current cipher */
2741 ssl_clear_cipher_ctx(s);
2742 ssl_clear_hash_ctx(&s->read_hash);
2743 ssl_clear_hash_ctx(&s->write_hash);
2746 void SSL_set_connect_state(SSL *s)
2750 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2751 s->handshake_func = s->method->ssl_connect;
2752 /* clear the current cipher */
2753 ssl_clear_cipher_ctx(s);
2754 ssl_clear_hash_ctx(&s->read_hash);
2755 ssl_clear_hash_ctx(&s->write_hash);
2758 int ssl_undefined_function(SSL *s)
2760 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2764 int ssl_undefined_void_function(void)
2766 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2767 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2771 int ssl_undefined_const_function(const SSL *s)
2773 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2774 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2778 SSL_METHOD *ssl_bad_method(int ver)
2780 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2784 const char *SSL_get_version(const SSL *s)
2786 if (s->version == TLS1_2_VERSION)
2788 else if (s->version == TLS1_1_VERSION)
2790 else if (s->version == TLS1_VERSION)
2792 else if (s->version == SSL3_VERSION)
2798 SSL *SSL_dup(SSL *s)
2800 STACK_OF(X509_NAME) *sk;
2805 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2808 ret->version = s->version;
2809 ret->type = s->type;
2810 ret->method = s->method;
2812 if (s->session != NULL) {
2813 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2814 SSL_copy_session_id(ret, s);
2817 * No session has been established yet, so we have to expect that
2818 * s->cert or ret->cert will be changed later -- they should not both
2819 * point to the same object, and thus we can't use
2820 * SSL_copy_session_id.
2823 ret->method->ssl_free(ret);
2824 ret->method = s->method;
2825 ret->method->ssl_new(ret);
2827 if (s->cert != NULL) {
2828 if (ret->cert != NULL) {
2829 ssl_cert_free(ret->cert);
2831 ret->cert = ssl_cert_dup(s->cert);
2832 if (ret->cert == NULL)
2836 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length);
2839 ret->options = s->options;
2840 ret->mode = s->mode;
2841 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2842 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2843 ret->msg_callback = s->msg_callback;
2844 ret->msg_callback_arg = s->msg_callback_arg;
2845 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2846 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2847 ret->generate_session_id = s->generate_session_id;
2849 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2851 ret->debug = s->debug;
2853 /* copy app data, a little dangerous perhaps */
2854 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2857 /* setup rbio, and wbio */
2858 if (s->rbio != NULL) {
2859 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2862 if (s->wbio != NULL) {
2863 if (s->wbio != s->rbio) {
2864 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2867 ret->wbio = ret->rbio;
2869 ret->rwstate = s->rwstate;
2870 ret->in_handshake = s->in_handshake;
2871 ret->handshake_func = s->handshake_func;
2872 ret->server = s->server;
2873 ret->renegotiate = s->renegotiate;
2874 ret->new_session = s->new_session;
2875 ret->quiet_shutdown = s->quiet_shutdown;
2876 ret->shutdown = s->shutdown;
2877 ret->state = s->state; /* SSL_dup does not really work at any state,
2879 ret->rstate = s->rstate;
2880 ret->init_num = 0; /* would have to copy ret->init_buf,
2881 * ret->init_msg, ret->init_num,
2885 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2887 /* dup the cipher_list and cipher_list_by_id stacks */
2888 if (s->cipher_list != NULL) {
2889 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2892 if (s->cipher_list_by_id != NULL)
2893 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2897 /* Dup the client_CA list */
2898 if (s->client_CA != NULL) {
2899 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2901 ret->client_CA = sk;
2902 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2903 xn = sk_X509_NAME_value(sk, i);
2904 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2920 void ssl_clear_cipher_ctx(SSL *s)
2922 if (s->enc_read_ctx != NULL) {
2923 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2924 OPENSSL_free(s->enc_read_ctx);
2925 s->enc_read_ctx = NULL;
2927 if (s->enc_write_ctx != NULL) {
2928 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2929 OPENSSL_free(s->enc_write_ctx);
2930 s->enc_write_ctx = NULL;
2932 #ifndef OPENSSL_NO_COMP
2933 if (s->expand != NULL) {
2934 COMP_CTX_free(s->expand);
2937 if (s->compress != NULL) {
2938 COMP_CTX_free(s->compress);
2944 X509 *SSL_get_certificate(const SSL *s)
2946 if (s->cert != NULL)
2947 return (s->cert->key->x509);
2952 EVP_PKEY *SSL_get_privatekey(const SSL *s)
2954 if (s->cert != NULL)
2955 return (s->cert->key->privatekey);
2960 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2962 if (ctx->cert != NULL)
2963 return ctx->cert->key->x509;
2968 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2970 if (ctx->cert != NULL)
2971 return ctx->cert->key->privatekey;
2976 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2978 if ((s->session != NULL) && (s->session->cipher != NULL))
2979 return (s->session->cipher);
2983 #ifdef OPENSSL_NO_COMP
2984 const void *SSL_get_current_compression(SSL *s)
2989 const void *SSL_get_current_expansion(SSL *s)
2995 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2997 if (s->compress != NULL)
2998 return (s->compress->meth);
3002 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3004 if (s->expand != NULL)
3005 return (s->expand->meth);
3010 int ssl_init_wbio_buffer(SSL *s, int push)
3014 if (s->bbio == NULL) {
3015 bbio = BIO_new(BIO_f_buffer());
3021 if (s->bbio == s->wbio)
3022 s->wbio = BIO_pop(s->wbio);
3024 (void)BIO_reset(bbio);
3025 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3026 if (!BIO_set_read_buffer_size(bbio, 1)) {
3027 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3031 if (s->wbio != bbio)
3032 s->wbio = BIO_push(bbio, s->wbio);
3034 if (s->wbio == bbio)
3035 s->wbio = BIO_pop(bbio);
3040 void ssl_free_wbio_buffer(SSL *s)
3042 if (s->bbio == NULL)
3045 if (s->bbio == s->wbio) {
3046 /* remove buffering */
3047 s->wbio = BIO_pop(s->wbio);
3048 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
3049 * adding one more preprocessor symbol */
3050 assert(s->wbio != NULL);
3057 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3059 ctx->quiet_shutdown = mode;
3062 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3064 return (ctx->quiet_shutdown);
3067 void SSL_set_quiet_shutdown(SSL *s, int mode)
3069 s->quiet_shutdown = mode;
3072 int SSL_get_quiet_shutdown(const SSL *s)
3074 return (s->quiet_shutdown);
3077 void SSL_set_shutdown(SSL *s, int mode)
3082 int SSL_get_shutdown(const SSL *s)
3084 return (s->shutdown);
3087 int SSL_version(const SSL *s)
3089 return (s->version);
3092 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3097 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3099 CERT *ocert = ssl->cert;
3100 if (ssl->ctx == ctx)
3102 #ifndef OPENSSL_NO_TLSEXT
3104 ctx = ssl->initial_ctx;
3106 ssl->cert = ssl_cert_dup(ctx->cert);
3108 /* Preserve any already negotiated parameters */
3110 ssl->cert->peer_sigalgs = ocert->peer_sigalgs;
3111 ssl->cert->peer_sigalgslen = ocert->peer_sigalgslen;
3112 ocert->peer_sigalgs = NULL;
3113 ssl->cert->ciphers_raw = ocert->ciphers_raw;
3114 ssl->cert->ciphers_rawlen = ocert->ciphers_rawlen;
3115 ocert->ciphers_raw = NULL;
3117 ssl_cert_free(ocert);
3121 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3122 * so setter APIs must prevent invalid lengths from entering the system.
3124 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3127 * If the session ID context matches that of the parent SSL_CTX,
3128 * inherit it from the new SSL_CTX as well. If however the context does
3129 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3130 * leave it unchanged.
3132 if ((ssl->ctx != NULL) &&
3133 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3134 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3135 ssl->sid_ctx_length = ctx->sid_ctx_length;
3136 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3139 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3140 if (ssl->ctx != NULL)
3141 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3147 #ifndef OPENSSL_NO_STDIO
3148 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3150 return (X509_STORE_set_default_paths(ctx->cert_store));
3153 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3156 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3160 void SSL_set_info_callback(SSL *ssl,
3161 void (*cb) (const SSL *ssl, int type, int val))
3163 ssl->info_callback = cb;
3167 * One compiler (Diab DCC) doesn't like argument names in returned function
3170 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3173 return ssl->info_callback;
3176 int SSL_state(const SSL *ssl)
3178 return (ssl->state);
3181 void SSL_set_state(SSL *ssl, int state)
3186 void SSL_set_verify_result(SSL *ssl, long arg)
3188 ssl->verify_result = arg;
3191 long SSL_get_verify_result(const SSL *ssl)
3193 return (ssl->verify_result);
3196 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3197 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3199 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3200 new_func, dup_func, free_func);
3203 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3205 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3208 void *SSL_get_ex_data(const SSL *s, int idx)
3210 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3213 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3214 CRYPTO_EX_dup *dup_func,
3215 CRYPTO_EX_free *free_func)
3217 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3218 new_func, dup_func, free_func);
3221 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3223 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3226 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3228 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3236 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3238 return (ctx->cert_store);
3241 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3243 if (ctx->cert_store != NULL)
3244 X509_STORE_free(ctx->cert_store);
3245 ctx->cert_store = store;
3248 int SSL_want(const SSL *s)
3250 return (s->rwstate);
3254 * \brief Set the callback for generating temporary RSA keys.
3255 * \param ctx the SSL context.
3256 * \param cb the callback
3259 #ifndef OPENSSL_NO_RSA
3260 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3264 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3267 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3271 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3277 * \brief The RSA temporary key callback function.
3278 * \param ssl the SSL session.
3279 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3280 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3281 * of the required key in bits.
3282 * \return the temporary RSA key.
3283 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3286 RSA *cb(SSL *ssl, int is_export, int keylength)
3292 * \brief Set the callback for generating temporary DH keys.
3293 * \param ctx the SSL context.
3294 * \param dh the callback
3297 #ifndef OPENSSL_NO_DH
3298 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3299 DH *(*dh) (SSL *ssl, int is_export,
3302 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3305 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3308 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3312 #ifndef OPENSSL_NO_ECDH
3313 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3314 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3317 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3318 (void (*)(void))ecdh);
3321 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3322 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3325 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3329 #ifndef OPENSSL_NO_PSK
3330 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3332 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3333 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3334 SSL_R_DATA_LENGTH_TOO_LONG);
3337 if (ctx->psk_identity_hint != NULL)
3338 OPENSSL_free(ctx->psk_identity_hint);
3339 if (identity_hint != NULL) {
3340 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3341 if (ctx->psk_identity_hint == NULL)
3344 ctx->psk_identity_hint = NULL;
3348 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3353 if (s->session == NULL)
3354 return 1; /* session not created yet, ignored */
3356 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3357 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3360 if (s->session->psk_identity_hint != NULL)
3361 OPENSSL_free(s->session->psk_identity_hint);
3362 if (identity_hint != NULL) {
3363 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3364 if (s->session->psk_identity_hint == NULL)
3367 s->session->psk_identity_hint = NULL;
3371 const char *SSL_get_psk_identity_hint(const SSL *s)
3373 if (s == NULL || s->session == NULL)
3375 return (s->session->psk_identity_hint);
3378 const char *SSL_get_psk_identity(const SSL *s)
3380 if (s == NULL || s->session == NULL)
3382 return (s->session->psk_identity);
3385 void SSL_set_psk_client_callback(SSL *s,
3386 unsigned int (*cb) (SSL *ssl,
3395 s->psk_client_callback = cb;
3398 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3399 unsigned int (*cb) (SSL *ssl,
3408 ctx->psk_client_callback = cb;
3411 void SSL_set_psk_server_callback(SSL *s,
3412 unsigned int (*cb) (SSL *ssl,
3413 const char *identity,
3418 s->psk_server_callback = cb;
3421 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3422 unsigned int (*cb) (SSL *ssl,
3423 const char *identity,
3428 ctx->psk_server_callback = cb;
3432 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3433 void (*cb) (int write_p, int version,
3434 int content_type, const void *buf,
3435 size_t len, SSL *ssl, void *arg))
3437 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3440 void SSL_set_msg_callback(SSL *ssl,
3441 void (*cb) (int write_p, int version,
3442 int content_type, const void *buf,
3443 size_t len, SSL *ssl, void *arg))
3445 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3448 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3449 int (*cb) (SSL *ssl,
3453 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3454 (void (*)(void))cb);
3457 void SSL_set_not_resumable_session_callback(SSL *ssl,
3458 int (*cb) (SSL *ssl,
3459 int is_forward_secure))
3461 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3462 (void (*)(void))cb);
3466 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3467 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3468 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3472 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3474 ssl_clear_hash_ctx(hash);
3475 *hash = EVP_MD_CTX_create();
3477 EVP_DigestInit_ex(*hash, md, NULL);
3481 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3485 EVP_MD_CTX_destroy(*hash);
3489 /* Retrieve handshake hashes */
3490 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3492 unsigned char *p = out;
3497 EVP_MD_CTX_init(&ctx);
3498 for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
3499 if (mask & ssl_get_algorithm2(s)) {
3500 int hashsize = EVP_MD_size(md);
3501 EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
3502 if (!hdgst || hashsize < 0 || hashsize > outlen)
3504 if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
3506 if (!EVP_DigestFinal_ex(&ctx, p, NULL))
3514 EVP_MD_CTX_cleanup(&ctx);
3518 void SSL_set_debug(SSL *s, int debug)
3523 int SSL_cache_hit(SSL *s)
3528 int SSL_is_server(SSL *s)
3533 void SSL_set_security_level(SSL *s, int level)
3535 s->cert->sec_level = level;
3538 int SSL_get_security_level(const SSL *s)
3540 return s->cert->sec_level;
3543 void SSL_set_security_callback(SSL *s,
3544 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3545 int bits, int nid, void *other,
3548 s->cert->sec_cb = cb;
3551 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3553 void *other, void *ex) {
3554 return s->cert->sec_cb;
3557 void SSL_set0_security_ex_data(SSL *s, void *ex)
3559 s->cert->sec_ex = ex;
3562 void *SSL_get0_security_ex_data(const SSL *s)
3564 return s->cert->sec_ex;
3567 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3569 ctx->cert->sec_level = level;
3572 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3574 return ctx->cert->sec_level;
3577 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3578 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3579 int bits, int nid, void *other,
3582 ctx->cert->sec_cb = cb;
3585 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3591 return ctx->cert->sec_cb;
3594 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3596 ctx->cert->sec_ex = ex;
3599 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3601 return ctx->cert->sec_ex;
3604 IMPLEMENT_STACK_OF(SSL_CIPHER)
3606 IMPLEMENT_STACK_OF(SSL_COMP)
3608 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);