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);
249 * Check to see if we were changed into a different method, if so, revert
250 * back if we are not doing session-id reuse.
252 if (!s->in_handshake && (s->session == NULL)
253 && (s->method != s->ctx->method)) {
254 s->method->ssl_free(s);
255 s->method = s->ctx->method;
256 if (!s->method->ssl_new(s))
259 s->method->ssl_clear(s);
263 /** Used to change an SSL_CTXs default SSL method type */
264 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
266 STACK_OF(SSL_CIPHER) *sk;
270 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
271 &(ctx->cipher_list_by_id),
272 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
273 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
274 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
275 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
281 SSL *SSL_new(SSL_CTX *ctx)
286 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
289 if (ctx->method == NULL) {
290 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
294 s = (SSL *)OPENSSL_malloc(sizeof(SSL));
297 memset(s, 0, sizeof(SSL));
299 #ifndef OPENSSL_NO_KRB5
300 s->kssl_ctx = kssl_ctx_new();
301 #endif /* OPENSSL_NO_KRB5 */
303 s->options = ctx->options;
305 s->max_cert_list = ctx->max_cert_list;
307 if (ctx->cert != NULL) {
309 * Earlier library versions used to copy the pointer to the CERT, not
310 * its contents; only when setting new parameters for the per-SSL
311 * copy, ssl_cert_new would be called (and the direct reference to
312 * the per-SSL_CTX settings would be lost, but those still were
313 * indirectly accessed for various purposes, and for that reason they
314 * used to be known as s->ctx->default_cert). Now we don't look at the
315 * SSL_CTX's CERT after having duplicated it once.
318 s->cert = ssl_cert_dup(ctx->cert);
322 s->cert = NULL; /* Cannot really happen (see SSL_CTX_new) */
324 s->read_ahead = ctx->read_ahead;
325 s->msg_callback = ctx->msg_callback;
326 s->msg_callback_arg = ctx->msg_callback_arg;
327 s->verify_mode = ctx->verify_mode;
328 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
330 s->verify_depth = ctx->verify_depth;
332 s->sid_ctx_length = ctx->sid_ctx_length;
333 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
334 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
335 s->verify_callback = ctx->default_verify_callback;
336 s->generate_session_id = ctx->generate_session_id;
338 s->param = X509_VERIFY_PARAM_new();
341 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
343 s->purpose = ctx->purpose;
344 s->trust = ctx->trust;
346 s->quiet_shutdown = ctx->quiet_shutdown;
347 s->max_send_fragment = ctx->max_send_fragment;
349 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
351 #ifndef OPENSSL_NO_TLSEXT
352 s->tlsext_debug_cb = 0;
353 s->tlsext_debug_arg = NULL;
354 s->tlsext_ticket_expected = 0;
355 s->tlsext_status_type = -1;
356 s->tlsext_status_expected = 0;
357 s->tlsext_ocsp_ids = NULL;
358 s->tlsext_ocsp_exts = NULL;
359 s->tlsext_ocsp_resp = NULL;
360 s->tlsext_ocsp_resplen = -1;
361 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
362 s->initial_ctx = ctx;
363 # ifndef OPENSSL_NO_EC
364 if (ctx->tlsext_ecpointformatlist) {
365 s->tlsext_ecpointformatlist =
366 BUF_memdup(ctx->tlsext_ecpointformatlist,
367 ctx->tlsext_ecpointformatlist_length);
368 if (!s->tlsext_ecpointformatlist)
370 s->tlsext_ecpointformatlist_length =
371 ctx->tlsext_ecpointformatlist_length;
373 if (ctx->tlsext_ellipticcurvelist) {
374 s->tlsext_ellipticcurvelist =
375 BUF_memdup(ctx->tlsext_ellipticcurvelist,
376 ctx->tlsext_ellipticcurvelist_length);
377 if (!s->tlsext_ellipticcurvelist)
379 s->tlsext_ellipticcurvelist_length =
380 ctx->tlsext_ellipticcurvelist_length;
383 # ifndef OPENSSL_NO_NEXTPROTONEG
384 s->next_proto_negotiated = NULL;
387 if (s->ctx->alpn_client_proto_list) {
388 s->alpn_client_proto_list =
389 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
390 if (s->alpn_client_proto_list == NULL)
392 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
393 s->ctx->alpn_client_proto_list_len);
394 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
398 s->verify_result = X509_V_OK;
400 s->method = ctx->method;
402 if (!s->method->ssl_new(s))
406 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
410 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
412 #ifndef OPENSSL_NO_PSK
413 s->psk_client_callback = ctx->psk_client_callback;
414 s->psk_server_callback = ctx->psk_server_callback;
421 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
425 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
426 unsigned int sid_ctx_len)
428 if (sid_ctx_len > sizeof ctx->sid_ctx) {
429 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
430 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
433 ctx->sid_ctx_length = sid_ctx_len;
434 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
439 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
440 unsigned int sid_ctx_len)
442 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
443 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
444 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
447 ssl->sid_ctx_length = sid_ctx_len;
448 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
453 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
455 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
456 ctx->generate_session_id = cb;
457 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
461 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
463 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
464 ssl->generate_session_id = cb;
465 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
469 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
473 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
474 * we can "construct" a session to give us the desired check - ie. to
475 * find if there's a session in the hash table that would conflict with
476 * any new session built out of this id/id_len and the ssl_version in use
481 if (id_len > sizeof r.session_id)
484 r.ssl_version = ssl->version;
485 r.session_id_length = id_len;
486 memcpy(r.session_id, id, id_len);
488 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
489 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
490 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
494 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
496 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
499 int SSL_set_purpose(SSL *s, int purpose)
501 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
504 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
506 return X509_VERIFY_PARAM_set_trust(s->param, trust);
509 int SSL_set_trust(SSL *s, int trust)
511 return X509_VERIFY_PARAM_set_trust(s->param, trust);
514 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
516 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
519 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
521 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
524 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
529 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
534 void SSL_certs_clear(SSL *s)
536 ssl_cert_clear_certs(s->cert);
539 void SSL_free(SSL *s)
546 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
554 fprintf(stderr, "SSL_free, bad reference count\n");
560 X509_VERIFY_PARAM_free(s->param);
562 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
564 if (s->bbio != NULL) {
565 /* If the buffering BIO is in place, pop it off */
566 if (s->bbio == s->wbio) {
567 s->wbio = BIO_pop(s->wbio);
573 BIO_free_all(s->rbio);
574 if ((s->wbio != NULL) && (s->wbio != s->rbio))
575 BIO_free_all(s->wbio);
577 if (s->init_buf != NULL)
578 BUF_MEM_free(s->init_buf);
580 /* add extra stuff */
581 if (s->cipher_list != NULL)
582 sk_SSL_CIPHER_free(s->cipher_list);
583 if (s->cipher_list_by_id != NULL)
584 sk_SSL_CIPHER_free(s->cipher_list_by_id);
586 /* Make the next call work :-) */
587 if (s->session != NULL) {
588 ssl_clear_bad_session(s);
589 SSL_SESSION_free(s->session);
592 ssl_clear_cipher_ctx(s);
593 ssl_clear_hash_ctx(&s->read_hash);
594 ssl_clear_hash_ctx(&s->write_hash);
597 ssl_cert_free(s->cert);
598 /* Free up if allocated */
600 #ifndef OPENSSL_NO_TLSEXT
601 if (s->tlsext_hostname)
602 OPENSSL_free(s->tlsext_hostname);
604 SSL_CTX_free(s->initial_ctx);
605 # ifndef OPENSSL_NO_EC
606 if (s->tlsext_ecpointformatlist)
607 OPENSSL_free(s->tlsext_ecpointformatlist);
608 if (s->tlsext_ellipticcurvelist)
609 OPENSSL_free(s->tlsext_ellipticcurvelist);
610 # endif /* OPENSSL_NO_EC */
611 if (s->tlsext_ocsp_exts)
612 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
613 if (s->tlsext_ocsp_ids)
614 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
615 if (s->tlsext_ocsp_resp)
616 OPENSSL_free(s->tlsext_ocsp_resp);
617 if (s->alpn_client_proto_list)
618 OPENSSL_free(s->alpn_client_proto_list);
621 if (s->client_CA != NULL)
622 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
624 if (s->method != NULL)
625 s->method->ssl_free(s);
628 SSL_CTX_free(s->ctx);
630 #ifndef OPENSSL_NO_KRB5
631 if (s->kssl_ctx != NULL)
632 kssl_ctx_free(s->kssl_ctx);
633 #endif /* OPENSSL_NO_KRB5 */
635 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
636 if (s->next_proto_negotiated)
637 OPENSSL_free(s->next_proto_negotiated);
640 #ifndef OPENSSL_NO_SRTP
641 if (s->srtp_profiles)
642 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
648 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
651 * If the output buffering BIO is still in place, remove it
653 if (s->bbio != NULL) {
654 if (s->wbio == s->bbio) {
655 s->wbio = s->wbio->next_bio;
656 s->bbio->next_bio = NULL;
659 if ((s->rbio != NULL) && (s->rbio != rbio))
660 BIO_free_all(s->rbio);
661 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
662 BIO_free_all(s->wbio);
667 BIO *SSL_get_rbio(const SSL *s)
672 BIO *SSL_get_wbio(const SSL *s)
677 int SSL_get_fd(const SSL *s)
679 return (SSL_get_rfd(s));
682 int SSL_get_rfd(const SSL *s)
688 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
694 int SSL_get_wfd(const SSL *s)
700 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
706 #ifndef OPENSSL_NO_SOCK
707 int SSL_set_fd(SSL *s, int fd)
712 bio = BIO_new(BIO_s_socket());
715 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
718 BIO_set_fd(bio, fd, BIO_NOCLOSE);
719 SSL_set_bio(s, bio, bio);
725 int SSL_set_wfd(SSL *s, int fd)
730 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
731 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
732 bio = BIO_new(BIO_s_socket());
735 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
738 BIO_set_fd(bio, fd, BIO_NOCLOSE);
739 SSL_set_bio(s, SSL_get_rbio(s), bio);
741 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
747 int SSL_set_rfd(SSL *s, int fd)
752 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
753 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
754 bio = BIO_new(BIO_s_socket());
757 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
760 BIO_set_fd(bio, fd, BIO_NOCLOSE);
761 SSL_set_bio(s, bio, SSL_get_wbio(s));
763 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
770 /* return length of latest Finished message we sent, copy to 'buf' */
771 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
776 ret = s->s3->tmp.finish_md_len;
779 memcpy(buf, s->s3->tmp.finish_md, count);
784 /* return length of latest Finished message we expected, copy to 'buf' */
785 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
790 ret = s->s3->tmp.peer_finish_md_len;
793 memcpy(buf, s->s3->tmp.peer_finish_md, count);
798 int SSL_get_verify_mode(const SSL *s)
800 return (s->verify_mode);
803 int SSL_get_verify_depth(const SSL *s)
805 return X509_VERIFY_PARAM_get_depth(s->param);
808 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
809 return (s->verify_callback);
812 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
814 return (ctx->verify_mode);
817 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
819 return X509_VERIFY_PARAM_get_depth(ctx->param);
822 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
823 return (ctx->default_verify_callback);
826 void SSL_set_verify(SSL *s, int mode,
827 int (*callback) (int ok, X509_STORE_CTX *ctx))
829 s->verify_mode = mode;
830 if (callback != NULL)
831 s->verify_callback = callback;
834 void SSL_set_verify_depth(SSL *s, int depth)
836 X509_VERIFY_PARAM_set_depth(s->param, depth);
839 void SSL_set_read_ahead(SSL *s, int yes)
844 int SSL_get_read_ahead(const SSL *s)
846 return (s->read_ahead);
849 int SSL_pending(const SSL *s)
852 * SSL_pending cannot work properly if read-ahead is enabled
853 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
854 * impossible to fix since SSL_pending cannot report errors that may be
855 * observed while scanning the new data. (Note that SSL_pending() is
856 * often used as a boolean value, so we'd better not return -1.)
858 return (s->method->ssl_pending(s));
861 X509 *SSL_get_peer_certificate(const SSL *s)
865 if ((s == NULL) || (s->session == NULL))
868 r = s->session->peer;
873 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
878 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
882 if ((s == NULL) || (s->session == NULL)
883 || (s->session->sess_cert == NULL))
886 r = s->session->sess_cert->cert_chain;
889 * If we are a client, cert_chain includes the peer's own certificate; if
890 * we are a server, it does not.
897 * Now in theory, since the calling process own 't' it should be safe to
898 * modify. We need to be able to read f without being hassled
900 void SSL_copy_session_id(SSL *t, const SSL *f)
904 /* Do we need to to SSL locking? */
905 SSL_set_session(t, SSL_get_session(f));
908 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
910 if (t->method != f->method) {
911 t->method->ssl_free(t); /* cleanup current */
912 t->method = f->method; /* change method */
913 t->method->ssl_new(t); /* setup new */
917 if (f->cert != NULL) {
918 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
924 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length);
927 /* Fix this so it checks all the valid key/cert options */
928 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
931 (ctx->cert == NULL) || (ctx->cert->key->x509 == NULL)) {
932 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
933 SSL_R_NO_CERTIFICATE_ASSIGNED);
936 if (ctx->cert->key->privatekey == NULL) {
937 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
938 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
941 return (X509_check_private_key
942 (ctx->cert->key->x509, ctx->cert->key->privatekey));
945 /* Fix this function so that it takes an optional type parameter */
946 int SSL_check_private_key(const SSL *ssl)
949 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
952 if (ssl->cert == NULL) {
953 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
956 if (ssl->cert->key->x509 == NULL) {
957 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
960 if (ssl->cert->key->privatekey == NULL) {
961 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
964 return (X509_check_private_key(ssl->cert->key->x509,
965 ssl->cert->key->privatekey));
968 int SSL_accept(SSL *s)
970 if (s->handshake_func == 0)
971 /* Not properly initialized yet */
972 SSL_set_accept_state(s);
974 return (s->method->ssl_accept(s));
977 int SSL_connect(SSL *s)
979 if (s->handshake_func == 0)
980 /* Not properly initialized yet */
981 SSL_set_connect_state(s);
983 return (s->method->ssl_connect(s));
986 long SSL_get_default_timeout(const SSL *s)
988 return (s->method->get_timeout());
991 int SSL_read(SSL *s, void *buf, int num)
993 if (s->handshake_func == 0) {
994 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
998 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
999 s->rwstate = SSL_NOTHING;
1002 return (s->method->ssl_read(s, buf, num));
1005 int SSL_peek(SSL *s, void *buf, int num)
1007 if (s->handshake_func == 0) {
1008 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1012 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1015 return (s->method->ssl_peek(s, buf, num));
1018 int SSL_write(SSL *s, const void *buf, int num)
1020 if (s->handshake_func == 0) {
1021 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1025 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1026 s->rwstate = SSL_NOTHING;
1027 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1030 return (s->method->ssl_write(s, buf, num));
1033 int SSL_shutdown(SSL *s)
1036 * Note that this function behaves differently from what one might
1037 * expect. Return values are 0 for no success (yet), 1 for success; but
1038 * calling it once is usually not enough, even if blocking I/O is used
1039 * (see ssl3_shutdown).
1042 if (s->handshake_func == 0) {
1043 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1047 if ((s != NULL) && !SSL_in_init(s))
1048 return (s->method->ssl_shutdown(s));
1053 int SSL_renegotiate(SSL *s)
1055 if (s->renegotiate == 0)
1060 return (s->method->ssl_renegotiate(s));
1063 int SSL_renegotiate_abbreviated(SSL *s)
1065 if (s->renegotiate == 0)
1070 return (s->method->ssl_renegotiate(s));
1073 int SSL_renegotiate_pending(SSL *s)
1076 * becomes true when negotiation is requested; false again once a
1077 * handshake has finished
1079 return (s->renegotiate != 0);
1082 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1087 case SSL_CTRL_GET_READ_AHEAD:
1088 return (s->read_ahead);
1089 case SSL_CTRL_SET_READ_AHEAD:
1091 s->read_ahead = larg;
1094 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1095 s->msg_callback_arg = parg;
1098 case SSL_CTRL_OPTIONS:
1099 return (s->options |= larg);
1100 case SSL_CTRL_CLEAR_OPTIONS:
1101 return (s->options &= ~larg);
1103 return (s->mode |= larg);
1104 case SSL_CTRL_CLEAR_MODE:
1105 return (s->mode &= ~larg);
1106 case SSL_CTRL_GET_MAX_CERT_LIST:
1107 return (s->max_cert_list);
1108 case SSL_CTRL_SET_MAX_CERT_LIST:
1109 l = s->max_cert_list;
1110 s->max_cert_list = larg;
1112 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1113 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1115 s->max_send_fragment = larg;
1117 case SSL_CTRL_GET_RI_SUPPORT:
1119 return s->s3->send_connection_binding;
1122 case SSL_CTRL_CERT_FLAGS:
1123 return (s->cert->cert_flags |= larg);
1124 case SSL_CTRL_CLEAR_CERT_FLAGS:
1125 return (s->cert->cert_flags &= ~larg);
1127 case SSL_CTRL_GET_RAW_CIPHERLIST:
1129 if (s->cert->ciphers_raw == NULL)
1131 *(unsigned char **)parg = s->cert->ciphers_raw;
1132 return (int)s->cert->ciphers_rawlen;
1134 return ssl_put_cipher_by_char(s, NULL, NULL);
1135 case SSL_CTRL_GET_EXTMS_SUPPORT:
1136 if (!s->session || SSL_in_init(s) || s->in_handshake)
1138 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1143 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1147 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1150 case SSL_CTRL_SET_MSG_CALLBACK:
1151 s->msg_callback = (void (*)
1152 (int write_p, int version, int content_type,
1153 const void *buf, size_t len, SSL *ssl,
1158 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1162 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1164 return ctx->sessions;
1167 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1170 /* For some cases with ctx == NULL perform syntax checks */
1173 #ifndef OPENSSL_NO_EC
1174 case SSL_CTRL_SET_CURVES_LIST:
1175 return tls1_set_curves_list(NULL, NULL, parg);
1177 case SSL_CTRL_SET_SIGALGS_LIST:
1178 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1179 return tls1_set_sigalgs_list(NULL, parg, 0);
1186 case SSL_CTRL_GET_READ_AHEAD:
1187 return (ctx->read_ahead);
1188 case SSL_CTRL_SET_READ_AHEAD:
1189 l = ctx->read_ahead;
1190 ctx->read_ahead = larg;
1193 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1194 ctx->msg_callback_arg = parg;
1197 case SSL_CTRL_GET_MAX_CERT_LIST:
1198 return (ctx->max_cert_list);
1199 case SSL_CTRL_SET_MAX_CERT_LIST:
1200 l = ctx->max_cert_list;
1201 ctx->max_cert_list = larg;
1204 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1205 l = ctx->session_cache_size;
1206 ctx->session_cache_size = larg;
1208 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1209 return (ctx->session_cache_size);
1210 case SSL_CTRL_SET_SESS_CACHE_MODE:
1211 l = ctx->session_cache_mode;
1212 ctx->session_cache_mode = larg;
1214 case SSL_CTRL_GET_SESS_CACHE_MODE:
1215 return (ctx->session_cache_mode);
1217 case SSL_CTRL_SESS_NUMBER:
1218 return (lh_SSL_SESSION_num_items(ctx->sessions));
1219 case SSL_CTRL_SESS_CONNECT:
1220 return (ctx->stats.sess_connect);
1221 case SSL_CTRL_SESS_CONNECT_GOOD:
1222 return (ctx->stats.sess_connect_good);
1223 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1224 return (ctx->stats.sess_connect_renegotiate);
1225 case SSL_CTRL_SESS_ACCEPT:
1226 return (ctx->stats.sess_accept);
1227 case SSL_CTRL_SESS_ACCEPT_GOOD:
1228 return (ctx->stats.sess_accept_good);
1229 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1230 return (ctx->stats.sess_accept_renegotiate);
1231 case SSL_CTRL_SESS_HIT:
1232 return (ctx->stats.sess_hit);
1233 case SSL_CTRL_SESS_CB_HIT:
1234 return (ctx->stats.sess_cb_hit);
1235 case SSL_CTRL_SESS_MISSES:
1236 return (ctx->stats.sess_miss);
1237 case SSL_CTRL_SESS_TIMEOUTS:
1238 return (ctx->stats.sess_timeout);
1239 case SSL_CTRL_SESS_CACHE_FULL:
1240 return (ctx->stats.sess_cache_full);
1241 case SSL_CTRL_OPTIONS:
1242 return (ctx->options |= larg);
1243 case SSL_CTRL_CLEAR_OPTIONS:
1244 return (ctx->options &= ~larg);
1246 return (ctx->mode |= larg);
1247 case SSL_CTRL_CLEAR_MODE:
1248 return (ctx->mode &= ~larg);
1249 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1250 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1252 ctx->max_send_fragment = larg;
1254 case SSL_CTRL_CERT_FLAGS:
1255 return (ctx->cert->cert_flags |= larg);
1256 case SSL_CTRL_CLEAR_CERT_FLAGS:
1257 return (ctx->cert->cert_flags &= ~larg);
1259 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1263 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1266 case SSL_CTRL_SET_MSG_CALLBACK:
1267 ctx->msg_callback = (void (*)
1268 (int write_p, int version, int content_type,
1269 const void *buf, size_t len, SSL *ssl,
1274 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1278 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1286 return ((l > 0) ? 1 : -1);
1289 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1290 const SSL_CIPHER *const *bp)
1294 l = (*ap)->id - (*bp)->id;
1298 return ((l > 0) ? 1 : -1);
1301 /** return a STACK of the ciphers available for the SSL and in order of
1303 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1306 if (s->cipher_list != NULL) {
1307 return (s->cipher_list);
1308 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1309 return (s->ctx->cipher_list);
1315 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1317 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1319 ciphers = SSL_get_ciphers(s);
1322 ssl_set_client_disabled(s);
1323 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1324 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1325 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1327 sk = sk_SSL_CIPHER_new_null();
1330 if (!sk_SSL_CIPHER_push(sk, c)) {
1331 sk_SSL_CIPHER_free(sk);
1339 /** return a STACK of the ciphers available for the SSL and in order of
1341 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1344 if (s->cipher_list_by_id != NULL) {
1345 return (s->cipher_list_by_id);
1346 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1347 return (s->ctx->cipher_list_by_id);
1353 /** The old interface to get the same thing as SSL_get_ciphers() */
1354 const char *SSL_get_cipher_list(const SSL *s, int n)
1357 STACK_OF(SSL_CIPHER) *sk;
1361 sk = SSL_get_ciphers(s);
1362 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1364 c = sk_SSL_CIPHER_value(sk, n);
1370 /** specify the ciphers to be used by default by the SSL_CTX */
1371 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1373 STACK_OF(SSL_CIPHER) *sk;
1375 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1376 &ctx->cipher_list_by_id, str, ctx->cert);
1378 * ssl_create_cipher_list may return an empty stack if it was unable to
1379 * find a cipher matching the given rule string (for example if the rule
1380 * string specifies a cipher which has been disabled). This is not an
1381 * error as far as ssl_create_cipher_list is concerned, and hence
1382 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1386 else if (sk_SSL_CIPHER_num(sk) == 0) {
1387 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1393 /** specify the ciphers to be used by the SSL */
1394 int SSL_set_cipher_list(SSL *s, const char *str)
1396 STACK_OF(SSL_CIPHER) *sk;
1398 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1399 &s->cipher_list_by_id, str, s->cert);
1400 /* see comment in SSL_CTX_set_cipher_list */
1403 else if (sk_SSL_CIPHER_num(sk) == 0) {
1404 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1410 /* works well for SSLv2, not so good for SSLv3 */
1411 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1414 STACK_OF(SSL_CIPHER) *sk;
1418 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1422 sk = s->session->ciphers;
1424 if (sk_SSL_CIPHER_num(sk) == 0)
1427 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1430 c = sk_SSL_CIPHER_value(sk, i);
1431 n = strlen(c->name);
1447 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1449 int (*put_cb) (const SSL_CIPHER *,
1455 int empty_reneg_info_scsv = !s->renegotiate;
1456 /* Set disabled masks for this session */
1457 ssl_set_client_disabled(s);
1463 put_cb = s->method->put_cipher_by_char;
1465 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1466 c = sk_SSL_CIPHER_value(sk, i);
1467 /* Skip disabled ciphers */
1468 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1470 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1471 if (c->id == SSL3_CK_SCSV) {
1472 if (!empty_reneg_info_scsv)
1475 empty_reneg_info_scsv = 0;
1482 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1486 if (empty_reneg_info_scsv) {
1487 static SSL_CIPHER scsv = {
1488 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1490 j = put_cb(&scsv, p);
1492 #ifdef OPENSSL_RI_DEBUG
1494 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1497 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1498 static SSL_CIPHER scsv = {
1499 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1501 j = put_cb(&scsv, p);
1509 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1511 STACK_OF(SSL_CIPHER) **skp)
1513 const SSL_CIPHER *c;
1514 STACK_OF(SSL_CIPHER) *sk;
1518 s->s3->send_connection_binding = 0;
1520 n = ssl_put_cipher_by_char(s, NULL, NULL);
1521 if (n == 0 || (num % n) != 0) {
1522 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1523 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1526 if ((skp == NULL) || (*skp == NULL))
1527 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1530 sk_SSL_CIPHER_zero(sk);
1533 if (s->cert->ciphers_raw)
1534 OPENSSL_free(s->cert->ciphers_raw);
1535 s->cert->ciphers_raw = BUF_memdup(p, num);
1536 if (s->cert->ciphers_raw == NULL) {
1537 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1540 s->cert->ciphers_rawlen = (size_t)num;
1542 for (i = 0; i < num; i += n) {
1543 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1544 if (s->s3 && (n != 3 || !p[0]) &&
1545 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1546 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1547 /* SCSV fatal if renegotiating */
1548 if (s->renegotiate) {
1549 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1550 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1551 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1554 s->s3->send_connection_binding = 1;
1556 #ifdef OPENSSL_RI_DEBUG
1557 fprintf(stderr, "SCSV received by server\n");
1562 /* Check for TLS_FALLBACK_SCSV */
1563 if ((n != 3 || !p[0]) &&
1564 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1565 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1567 * The SCSV indicates that the client previously tried a higher
1568 * version. Fail if the current version is an unexpected
1571 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1572 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1573 SSL_R_INAPPROPRIATE_FALLBACK);
1575 ssl3_send_alert(s, SSL3_AL_FATAL,
1576 SSL_AD_INAPPROPRIATE_FALLBACK);
1583 c = ssl_get_cipher_by_char(s, p);
1586 if (!sk_SSL_CIPHER_push(sk, c)) {
1587 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1597 if ((skp == NULL) || (*skp == NULL))
1598 sk_SSL_CIPHER_free(sk);
1602 #ifndef OPENSSL_NO_TLSEXT
1603 /** return a servername extension value if provided in Client Hello, or NULL.
1604 * So far, only host_name types are defined (RFC 3546).
1607 const char *SSL_get_servername(const SSL *s, const int type)
1609 if (type != TLSEXT_NAMETYPE_host_name)
1612 return s->session && !s->tlsext_hostname ?
1613 s->session->tlsext_hostname : s->tlsext_hostname;
1616 int SSL_get_servername_type(const SSL *s)
1619 && (!s->tlsext_hostname ? s->session->
1620 tlsext_hostname : s->tlsext_hostname))
1621 return TLSEXT_NAMETYPE_host_name;
1626 * SSL_select_next_proto implements the standard protocol selection. It is
1627 * expected that this function is called from the callback set by
1628 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1629 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1630 * not included in the length. A byte string of length 0 is invalid. No byte
1631 * string may be truncated. The current, but experimental algorithm for
1632 * selecting the protocol is: 1) If the server doesn't support NPN then this
1633 * is indicated to the callback. In this case, the client application has to
1634 * abort the connection or have a default application level protocol. 2) If
1635 * the server supports NPN, but advertises an empty list then the client
1636 * selects the first protcol in its list, but indicates via the API that this
1637 * fallback case was enacted. 3) Otherwise, the client finds the first
1638 * protocol in the server's list that it supports and selects this protocol.
1639 * This is because it's assumed that the server has better information about
1640 * which protocol a client should use. 4) If the client doesn't support any
1641 * of the server's advertised protocols, then this is treated the same as
1642 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1643 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1645 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1646 const unsigned char *server,
1647 unsigned int server_len,
1648 const unsigned char *client,
1649 unsigned int client_len)
1652 const unsigned char *result;
1653 int status = OPENSSL_NPN_UNSUPPORTED;
1656 * For each protocol in server preference order, see if we support it.
1658 for (i = 0; i < server_len;) {
1659 for (j = 0; j < client_len;) {
1660 if (server[i] == client[j] &&
1661 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1662 /* We found a match */
1663 result = &server[i];
1664 status = OPENSSL_NPN_NEGOTIATED;
1674 /* There's no overlap between our protocols and the server's list. */
1676 status = OPENSSL_NPN_NO_OVERLAP;
1679 *out = (unsigned char *)result + 1;
1680 *outlen = result[0];
1684 # ifndef OPENSSL_NO_NEXTPROTONEG
1686 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1687 * client's requested protocol for this connection and returns 0. If the
1688 * client didn't request any protocol, then *data is set to NULL. Note that
1689 * the client can request any protocol it chooses. The value returned from
1690 * this function need not be a member of the list of supported protocols
1691 * provided by the callback.
1693 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1696 *data = s->next_proto_negotiated;
1700 *len = s->next_proto_negotiated_len;
1705 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1706 * a TLS server needs a list of supported protocols for Next Protocol
1707 * Negotiation. The returned list must be in wire format. The list is
1708 * returned by setting |out| to point to it and |outlen| to its length. This
1709 * memory will not be modified, but one should assume that the SSL* keeps a
1710 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1711 * wishes to advertise. Otherwise, no such extension will be included in the
1714 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1715 int (*cb) (SSL *ssl,
1718 unsigned int *outlen,
1719 void *arg), void *arg)
1721 ctx->next_protos_advertised_cb = cb;
1722 ctx->next_protos_advertised_cb_arg = arg;
1726 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1727 * client needs to select a protocol from the server's provided list. |out|
1728 * must be set to point to the selected protocol (which may be within |in|).
1729 * The length of the protocol name must be written into |outlen|. The
1730 * server's advertised protocols are provided in |in| and |inlen|. The
1731 * callback can assume that |in| is syntactically valid. The client must
1732 * select a protocol. It is fatal to the connection if this callback returns
1733 * a value other than SSL_TLSEXT_ERR_OK.
1735 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1736 int (*cb) (SSL *s, unsigned char **out,
1737 unsigned char *outlen,
1738 const unsigned char *in,
1740 void *arg), void *arg)
1742 ctx->next_proto_select_cb = cb;
1743 ctx->next_proto_select_cb_arg = arg;
1748 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1749 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1750 * length-prefixed strings). Returns 0 on success.
1752 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1753 unsigned protos_len)
1755 if (ctx->alpn_client_proto_list)
1756 OPENSSL_free(ctx->alpn_client_proto_list);
1758 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1759 if (!ctx->alpn_client_proto_list)
1761 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1762 ctx->alpn_client_proto_list_len = protos_len;
1768 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1769 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1770 * length-prefixed strings). Returns 0 on success.
1772 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1773 unsigned protos_len)
1775 if (ssl->alpn_client_proto_list)
1776 OPENSSL_free(ssl->alpn_client_proto_list);
1778 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1779 if (!ssl->alpn_client_proto_list)
1781 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1782 ssl->alpn_client_proto_list_len = protos_len;
1788 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1789 * called during ClientHello processing in order to select an ALPN protocol
1790 * from the client's list of offered protocols.
1792 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1793 int (*cb) (SSL *ssl,
1794 const unsigned char **out,
1795 unsigned char *outlen,
1796 const unsigned char *in,
1798 void *arg), void *arg)
1800 ctx->alpn_select_cb = cb;
1801 ctx->alpn_select_cb_arg = arg;
1805 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1806 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1807 * (not including the leading length-prefix byte). If the server didn't
1808 * respond with a negotiated protocol then |*len| will be zero.
1810 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1815 *data = ssl->s3->alpn_selected;
1819 *len = ssl->s3->alpn_selected_len;
1822 #endif /* !OPENSSL_NO_TLSEXT */
1824 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1825 const char *label, size_t llen,
1826 const unsigned char *p, size_t plen,
1829 if (s->version < TLS1_VERSION)
1832 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1837 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1842 ((unsigned int)a->session_id[0]) |
1843 ((unsigned int)a->session_id[1] << 8L) |
1844 ((unsigned long)a->session_id[2] << 16L) |
1845 ((unsigned long)a->session_id[3] << 24L);
1850 * NB: If this function (or indeed the hash function which uses a sort of
1851 * coarser function than this one) is changed, ensure
1852 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1853 * being able to construct an SSL_SESSION that will collide with any existing
1854 * session with a matching session ID.
1856 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1858 if (a->ssl_version != b->ssl_version)
1860 if (a->session_id_length != b->session_id_length)
1862 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1866 * These wrapper functions should remain rather than redeclaring
1867 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1868 * variable. The reason is that the functions aren't static, they're exposed
1871 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1872 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1874 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1876 SSL_CTX *ret = NULL;
1879 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1883 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1884 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1888 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1889 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1892 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1896 memset(ret, 0, sizeof(SSL_CTX));
1900 ret->cert_store = NULL;
1901 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1902 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1903 ret->session_cache_head = NULL;
1904 ret->session_cache_tail = NULL;
1906 /* We take the system default */
1907 ret->session_timeout = meth->get_timeout();
1909 ret->new_session_cb = 0;
1910 ret->remove_session_cb = 0;
1911 ret->get_session_cb = 0;
1912 ret->generate_session_id = 0;
1914 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1916 ret->references = 1;
1917 ret->quiet_shutdown = 0;
1919 /* ret->cipher=NULL;*/
1921 ret->s2->challenge=NULL;
1922 ret->master_key=NULL;
1923 ret->s2->conn_id=NULL; */
1925 ret->info_callback = NULL;
1927 ret->app_verify_callback = 0;
1928 ret->app_verify_arg = NULL;
1930 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1931 ret->read_ahead = 0;
1932 ret->msg_callback = 0;
1933 ret->msg_callback_arg = NULL;
1934 ret->verify_mode = SSL_VERIFY_NONE;
1936 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */
1938 ret->sid_ctx_length = 0;
1939 ret->default_verify_callback = NULL;
1940 if ((ret->cert = ssl_cert_new()) == NULL)
1943 ret->default_passwd_callback = 0;
1944 ret->default_passwd_callback_userdata = NULL;
1945 ret->client_cert_cb = 0;
1946 ret->app_gen_cookie_cb = 0;
1947 ret->app_verify_cookie_cb = 0;
1949 ret->sessions = lh_SSL_SESSION_new();
1950 if (ret->sessions == NULL)
1952 ret->cert_store = X509_STORE_new();
1953 if (ret->cert_store == NULL)
1956 ssl_create_cipher_list(ret->method,
1957 &ret->cipher_list, &ret->cipher_list_by_id,
1958 SSL_DEFAULT_CIPHER_LIST, ret->cert);
1959 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1960 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1964 ret->param = X509_VERIFY_PARAM_new();
1968 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1969 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1972 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1973 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1977 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1980 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1982 ret->extra_certs = NULL;
1983 /* No compression for DTLS */
1984 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1985 ret->comp_methods = SSL_COMP_get_compression_methods();
1987 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1989 #ifndef OPENSSL_NO_TLSEXT
1990 ret->tlsext_servername_callback = 0;
1991 ret->tlsext_servername_arg = NULL;
1992 /* Setup RFC4507 ticket keys */
1993 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1994 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1995 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1996 ret->options |= SSL_OP_NO_TICKET;
1998 ret->tlsext_status_cb = 0;
1999 ret->tlsext_status_arg = NULL;
2001 # ifndef OPENSSL_NO_NEXTPROTONEG
2002 ret->next_protos_advertised_cb = 0;
2003 ret->next_proto_select_cb = 0;
2006 #ifndef OPENSSL_NO_PSK
2007 ret->psk_identity_hint = NULL;
2008 ret->psk_client_callback = NULL;
2009 ret->psk_server_callback = NULL;
2011 #ifndef OPENSSL_NO_SRP
2012 SSL_CTX_SRP_CTX_init(ret);
2014 #ifndef OPENSSL_NO_ENGINE
2015 ret->client_cert_engine = NULL;
2016 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2017 # define eng_strx(x) #x
2018 # define eng_str(x) eng_strx(x)
2019 /* Use specific client engine automatically... ignore errors */
2022 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2025 ENGINE_load_builtin_engines();
2026 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2028 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2034 * Default is to connect to non-RI servers. When RI is more widely
2035 * deployed might change this.
2037 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2041 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2048 void SSL_CTX_free(SSL_CTX *a)
2055 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2057 REF_PRINT("SSL_CTX", a);
2063 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
2069 X509_VERIFY_PARAM_free(a->param);
2072 * Free internal session cache. However: the remove_cb() may reference
2073 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2074 * after the sessions were flushed.
2075 * As the ex_data handling routines might also touch the session cache,
2076 * the most secure solution seems to be: empty (flush) the cache, then
2077 * free ex_data, then finally free the cache.
2078 * (See ticket [openssl.org #212].)
2080 if (a->sessions != NULL)
2081 SSL_CTX_flush_sessions(a, 0);
2083 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2085 if (a->sessions != NULL)
2086 lh_SSL_SESSION_free(a->sessions);
2088 if (a->cert_store != NULL)
2089 X509_STORE_free(a->cert_store);
2090 if (a->cipher_list != NULL)
2091 sk_SSL_CIPHER_free(a->cipher_list);
2092 if (a->cipher_list_by_id != NULL)
2093 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2094 if (a->cert != NULL)
2095 ssl_cert_free(a->cert);
2096 if (a->client_CA != NULL)
2097 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2098 if (a->extra_certs != NULL)
2099 sk_X509_pop_free(a->extra_certs, X509_free);
2100 #if 0 /* This should never be done, since it
2101 * removes a global database */
2102 if (a->comp_methods != NULL)
2103 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free);
2105 a->comp_methods = NULL;
2108 #ifndef OPENSSL_NO_SRTP
2109 if (a->srtp_profiles)
2110 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2113 #ifndef OPENSSL_NO_PSK
2114 if (a->psk_identity_hint)
2115 OPENSSL_free(a->psk_identity_hint);
2117 #ifndef OPENSSL_NO_SRP
2118 SSL_CTX_SRP_CTX_free(a);
2120 #ifndef OPENSSL_NO_ENGINE
2121 if (a->client_cert_engine)
2122 ENGINE_finish(a->client_cert_engine);
2125 #ifndef OPENSSL_NO_TLSEXT
2126 # ifndef OPENSSL_NO_EC
2127 if (a->tlsext_ecpointformatlist)
2128 OPENSSL_free(a->tlsext_ecpointformatlist);
2129 if (a->tlsext_ellipticcurvelist)
2130 OPENSSL_free(a->tlsext_ellipticcurvelist);
2131 # endif /* OPENSSL_NO_EC */
2132 if (a->alpn_client_proto_list != NULL)
2133 OPENSSL_free(a->alpn_client_proto_list);
2139 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2141 ctx->default_passwd_callback = cb;
2144 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2146 ctx->default_passwd_callback_userdata = u;
2149 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2150 int (*cb) (X509_STORE_CTX *, void *),
2153 ctx->app_verify_callback = cb;
2154 ctx->app_verify_arg = arg;
2157 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2158 int (*cb) (int, X509_STORE_CTX *))
2160 ctx->verify_mode = mode;
2161 ctx->default_verify_callback = cb;
2164 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2166 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2169 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2172 ssl_cert_set_cert_cb(c->cert, cb, arg);
2175 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2177 ssl_cert_set_cert_cb(s->cert, cb, arg);
2180 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2183 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2184 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2185 int rsa_tmp_export, dh_tmp_export, kl;
2186 unsigned long mask_k, mask_a, emask_k, emask_a;
2187 #ifndef OPENSSL_NO_ECDSA
2188 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2190 #ifndef OPENSSL_NO_ECDH
2191 int have_ecdh_tmp, ecdh_ok;
2193 #ifndef OPENSSL_NO_EC
2195 EVP_PKEY *ecc_pkey = NULL;
2196 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2201 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2203 #ifndef OPENSSL_NO_RSA
2204 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2205 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2206 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2208 rsa_tmp = rsa_tmp_export = 0;
2210 #ifndef OPENSSL_NO_DH
2211 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2212 dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2214 && DH_size(c->dh_tmp) * 8 <= kl));
2216 dh_tmp = dh_tmp_export = 0;
2219 #ifndef OPENSSL_NO_ECDH
2220 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2222 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2223 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID;
2224 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2225 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2226 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2227 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2228 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2229 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2230 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID;
2231 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2232 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2233 /* FIX THIS EAY EAY EAY */
2234 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID;
2235 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2236 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2237 #ifndef OPENSSL_NO_EC
2238 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID;
2247 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2248 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2249 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2252 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2253 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2254 mask_k |= SSL_kGOST;
2255 mask_a |= SSL_aGOST01;
2257 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2258 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2259 mask_k |= SSL_kGOST;
2260 mask_a |= SSL_aGOST94;
2263 if (rsa_enc || (rsa_tmp && rsa_sign))
2265 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2266 emask_k |= SSL_kRSA;
2269 /* The match needs to be both kDHE and aRSA or aDSA, so don't worry */
2270 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign))
2272 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2273 (rsa_enc || rsa_sign || dsa_sign))
2274 emask_k |= SSL_kDHE;
2278 emask_k |= SSL_kDHE;
2286 emask_k |= SSL_kDHr;
2291 emask_k |= SSL_kDHd;
2293 if (emask_k & (SSL_kDHr | SSL_kDHd))
2296 if (rsa_enc || rsa_sign) {
2298 emask_a |= SSL_aRSA;
2303 emask_a |= SSL_aDSS;
2306 mask_a |= SSL_aNULL;
2307 emask_a |= SSL_aNULL;
2309 #ifndef OPENSSL_NO_KRB5
2310 mask_k |= SSL_kKRB5;
2311 mask_a |= SSL_aKRB5;
2312 emask_k |= SSL_kKRB5;
2313 emask_a |= SSL_aKRB5;
2317 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2318 * depending on the key usage extension.
2320 #ifndef OPENSSL_NO_EC
2321 if (have_ecc_cert) {
2322 cpk = &c->pkeys[SSL_PKEY_ECC];
2324 /* This call populates extension flags (ex_flags) */
2325 X509_check_purpose(x, -1, 0);
2326 # ifndef OPENSSL_NO_ECDH
2327 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2328 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2330 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2331 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2332 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2334 ecc_pkey = X509_get_pubkey(x);
2335 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2336 EVP_PKEY_free(ecc_pkey);
2337 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2338 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2339 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2341 # ifndef OPENSSL_NO_ECDH
2344 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2345 mask_k |= SSL_kECDHr;
2346 mask_a |= SSL_aECDH;
2347 if (ecc_pkey_size <= 163) {
2348 emask_k |= SSL_kECDHr;
2349 emask_a |= SSL_aECDH;
2353 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2354 mask_k |= SSL_kECDHe;
2355 mask_a |= SSL_aECDH;
2356 if (ecc_pkey_size <= 163) {
2357 emask_k |= SSL_kECDHe;
2358 emask_a |= SSL_aECDH;
2363 # ifndef OPENSSL_NO_ECDSA
2365 mask_a |= SSL_aECDSA;
2366 emask_a |= SSL_aECDSA;
2372 #ifndef OPENSSL_NO_ECDH
2373 if (have_ecdh_tmp) {
2374 mask_k |= SSL_kECDHE;
2375 emask_k |= SSL_kECDHE;
2379 #ifndef OPENSSL_NO_PSK
2382 emask_k |= SSL_kPSK;
2383 emask_a |= SSL_aPSK;
2388 c->export_mask_k = emask_k;
2389 c->export_mask_a = emask_a;
2393 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2394 #define ku_reject(x, usage) \
2395 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2397 #ifndef OPENSSL_NO_EC
2399 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2401 unsigned long alg_k, alg_a;
2402 EVP_PKEY *pkey = NULL;
2404 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2405 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2407 alg_k = cs->algorithm_mkey;
2408 alg_a = cs->algorithm_auth;
2410 if (SSL_C_IS_EXPORT(cs)) {
2411 /* ECDH key length in export ciphers must be <= 163 bits */
2412 pkey = X509_get_pubkey(x);
2415 keysize = EVP_PKEY_bits(pkey);
2416 EVP_PKEY_free(pkey);
2421 /* This call populates the ex_flags field correctly */
2422 X509_check_purpose(x, -1, 0);
2423 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2424 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2425 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2427 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2428 /* key usage, if present, must allow key agreement */
2429 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2430 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2431 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2434 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2435 /* signature alg must be ECDSA */
2436 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2437 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2438 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2442 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2443 /* signature alg must be RSA */
2445 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2446 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2447 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2452 if (alg_a & SSL_aECDSA) {
2453 /* key usage, if present, must allow signing */
2454 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2455 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2456 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2461 return 1; /* all checks are ok */
2466 static int ssl_get_server_cert_index(const SSL *s)
2469 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2470 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2471 idx = SSL_PKEY_RSA_SIGN;
2473 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2477 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2483 if (!s->s3 || !s->s3->tmp.new_cipher)
2485 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2487 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2489 * Broken protocol test: return last used certificate: which may mismatch
2492 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2496 i = ssl_get_server_cert_index(s);
2498 /* This may or may not be an error. */
2503 return &c->pkeys[i];
2506 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2509 unsigned long alg_a;
2513 alg_a = cipher->algorithm_auth;
2516 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2518 * Broken protocol test: use last key: which may mismatch the one
2521 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2522 idx = c->key - c->pkeys;
2526 if ((alg_a & SSL_aDSS) &&
2527 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2528 idx = SSL_PKEY_DSA_SIGN;
2529 else if (alg_a & SSL_aRSA) {
2530 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2531 idx = SSL_PKEY_RSA_SIGN;
2532 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2533 idx = SSL_PKEY_RSA_ENC;
2534 } else if ((alg_a & SSL_aECDSA) &&
2535 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2538 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2542 *pmd = c->pkeys[idx].digest;
2543 return c->pkeys[idx].privatekey;
2546 #ifndef OPENSSL_NO_TLSEXT
2547 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2548 size_t *serverinfo_length)
2552 *serverinfo_length = 0;
2555 i = ssl_get_server_cert_index(s);
2559 if (c->pkeys[i].serverinfo == NULL)
2562 *serverinfo = c->pkeys[i].serverinfo;
2563 *serverinfo_length = c->pkeys[i].serverinfo_length;
2568 void ssl_update_cache(SSL *s, int mode)
2573 * If the session_id_length is 0, we are not supposed to cache it, and it
2574 * would be rather hard to do anyway :-)
2576 if (s->session->session_id_length == 0)
2579 i = s->session_ctx->session_cache_mode;
2580 if ((i & mode) && (!s->hit)
2581 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2582 || SSL_CTX_add_session(s->session_ctx, s->session))
2583 && (s->session_ctx->new_session_cb != NULL)) {
2584 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2585 if (!s->session_ctx->new_session_cb(s, s->session))
2586 SSL_SESSION_free(s->session);
2589 /* auto flush every 255 connections */
2590 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2591 if ((((mode & SSL_SESS_CACHE_CLIENT)
2592 ? s->session_ctx->stats.sess_connect_good
2593 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2594 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2599 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2604 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2609 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2614 if (s->method != meth) {
2615 if (s->handshake_func != NULL)
2616 conn = (s->handshake_func == s->method->ssl_connect);
2618 if (s->method->version == meth->version)
2621 s->method->ssl_free(s);
2623 ret = s->method->ssl_new(s);
2627 s->handshake_func = meth->ssl_connect;
2629 s->handshake_func = meth->ssl_accept;
2634 int SSL_get_error(const SSL *s, int i)
2641 return (SSL_ERROR_NONE);
2644 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2645 * where we do encode the error
2647 if ((l = ERR_peek_error()) != 0) {
2648 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2649 return (SSL_ERROR_SYSCALL);
2651 return (SSL_ERROR_SSL);
2654 if ((i < 0) && SSL_want_read(s)) {
2655 bio = SSL_get_rbio(s);
2656 if (BIO_should_read(bio))
2657 return (SSL_ERROR_WANT_READ);
2658 else if (BIO_should_write(bio))
2660 * This one doesn't make too much sense ... We never try to write
2661 * to the rbio, and an application program where rbio and wbio
2662 * are separate couldn't even know what it should wait for.
2663 * However if we ever set s->rwstate incorrectly (so that we have
2664 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2665 * wbio *are* the same, this test works around that bug; so it
2666 * might be safer to keep it.
2668 return (SSL_ERROR_WANT_WRITE);
2669 else if (BIO_should_io_special(bio)) {
2670 reason = BIO_get_retry_reason(bio);
2671 if (reason == BIO_RR_CONNECT)
2672 return (SSL_ERROR_WANT_CONNECT);
2673 else if (reason == BIO_RR_ACCEPT)
2674 return (SSL_ERROR_WANT_ACCEPT);
2676 return (SSL_ERROR_SYSCALL); /* unknown */
2680 if ((i < 0) && SSL_want_write(s)) {
2681 bio = SSL_get_wbio(s);
2682 if (BIO_should_write(bio))
2683 return (SSL_ERROR_WANT_WRITE);
2684 else if (BIO_should_read(bio))
2686 * See above (SSL_want_read(s) with BIO_should_write(bio))
2688 return (SSL_ERROR_WANT_READ);
2689 else if (BIO_should_io_special(bio)) {
2690 reason = BIO_get_retry_reason(bio);
2691 if (reason == BIO_RR_CONNECT)
2692 return (SSL_ERROR_WANT_CONNECT);
2693 else if (reason == BIO_RR_ACCEPT)
2694 return (SSL_ERROR_WANT_ACCEPT);
2696 return (SSL_ERROR_SYSCALL);
2699 if ((i < 0) && SSL_want_x509_lookup(s)) {
2700 return (SSL_ERROR_WANT_X509_LOOKUP);
2704 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2705 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2706 return (SSL_ERROR_ZERO_RETURN);
2708 return (SSL_ERROR_SYSCALL);
2711 int SSL_do_handshake(SSL *s)
2715 if (s->handshake_func == NULL) {
2716 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2720 s->method->ssl_renegotiate_check(s);
2722 if (SSL_in_init(s) || SSL_in_before(s)) {
2723 ret = s->handshake_func(s);
2729 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2730 * calls will reset it
2732 void SSL_set_accept_state(SSL *s)
2736 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2737 s->handshake_func = s->method->ssl_accept;
2738 /* clear the current cipher */
2739 ssl_clear_cipher_ctx(s);
2740 ssl_clear_hash_ctx(&s->read_hash);
2741 ssl_clear_hash_ctx(&s->write_hash);
2744 void SSL_set_connect_state(SSL *s)
2748 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2749 s->handshake_func = s->method->ssl_connect;
2750 /* clear the current cipher */
2751 ssl_clear_cipher_ctx(s);
2752 ssl_clear_hash_ctx(&s->read_hash);
2753 ssl_clear_hash_ctx(&s->write_hash);
2756 int ssl_undefined_function(SSL *s)
2758 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2762 int ssl_undefined_void_function(void)
2764 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2765 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2769 int ssl_undefined_const_function(const SSL *s)
2771 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2772 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2776 SSL_METHOD *ssl_bad_method(int ver)
2778 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2782 const char *SSL_get_version(const SSL *s)
2784 if (s->version == TLS1_2_VERSION)
2786 else if (s->version == TLS1_1_VERSION)
2788 else if (s->version == TLS1_VERSION)
2790 else if (s->version == SSL3_VERSION)
2796 SSL *SSL_dup(SSL *s)
2798 STACK_OF(X509_NAME) *sk;
2803 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2806 ret->version = s->version;
2807 ret->type = s->type;
2808 ret->method = s->method;
2810 if (s->session != NULL) {
2811 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2812 SSL_copy_session_id(ret, s);
2815 * No session has been established yet, so we have to expect that
2816 * s->cert or ret->cert will be changed later -- they should not both
2817 * point to the same object, and thus we can't use
2818 * SSL_copy_session_id.
2821 ret->method->ssl_free(ret);
2822 ret->method = s->method;
2823 ret->method->ssl_new(ret);
2825 if (s->cert != NULL) {
2826 if (ret->cert != NULL) {
2827 ssl_cert_free(ret->cert);
2829 ret->cert = ssl_cert_dup(s->cert);
2830 if (ret->cert == NULL)
2834 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length);
2837 ret->options = s->options;
2838 ret->mode = s->mode;
2839 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2840 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2841 ret->msg_callback = s->msg_callback;
2842 ret->msg_callback_arg = s->msg_callback_arg;
2843 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2844 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2845 ret->generate_session_id = s->generate_session_id;
2847 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2849 ret->debug = s->debug;
2851 /* copy app data, a little dangerous perhaps */
2852 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2855 /* setup rbio, and wbio */
2856 if (s->rbio != NULL) {
2857 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2860 if (s->wbio != NULL) {
2861 if (s->wbio != s->rbio) {
2862 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2865 ret->wbio = ret->rbio;
2867 ret->rwstate = s->rwstate;
2868 ret->in_handshake = s->in_handshake;
2869 ret->handshake_func = s->handshake_func;
2870 ret->server = s->server;
2871 ret->renegotiate = s->renegotiate;
2872 ret->new_session = s->new_session;
2873 ret->quiet_shutdown = s->quiet_shutdown;
2874 ret->shutdown = s->shutdown;
2875 ret->state = s->state; /* SSL_dup does not really work at any state,
2877 ret->rstate = s->rstate;
2878 ret->init_num = 0; /* would have to copy ret->init_buf,
2879 * ret->init_msg, ret->init_num,
2883 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2885 /* dup the cipher_list and cipher_list_by_id stacks */
2886 if (s->cipher_list != NULL) {
2887 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2890 if (s->cipher_list_by_id != NULL)
2891 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2895 /* Dup the client_CA list */
2896 if (s->client_CA != NULL) {
2897 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2899 ret->client_CA = sk;
2900 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2901 xn = sk_X509_NAME_value(sk, i);
2902 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2918 void ssl_clear_cipher_ctx(SSL *s)
2920 if (s->enc_read_ctx != NULL) {
2921 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2922 OPENSSL_free(s->enc_read_ctx);
2923 s->enc_read_ctx = NULL;
2925 if (s->enc_write_ctx != NULL) {
2926 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2927 OPENSSL_free(s->enc_write_ctx);
2928 s->enc_write_ctx = NULL;
2930 #ifndef OPENSSL_NO_COMP
2931 if (s->expand != NULL) {
2932 COMP_CTX_free(s->expand);
2935 if (s->compress != NULL) {
2936 COMP_CTX_free(s->compress);
2942 X509 *SSL_get_certificate(const SSL *s)
2944 if (s->cert != NULL)
2945 return (s->cert->key->x509);
2950 EVP_PKEY *SSL_get_privatekey(const SSL *s)
2952 if (s->cert != NULL)
2953 return (s->cert->key->privatekey);
2958 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2960 if (ctx->cert != NULL)
2961 return ctx->cert->key->x509;
2966 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2968 if (ctx->cert != NULL)
2969 return ctx->cert->key->privatekey;
2974 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2976 if ((s->session != NULL) && (s->session->cipher != NULL))
2977 return (s->session->cipher);
2981 #ifdef OPENSSL_NO_COMP
2982 const void *SSL_get_current_compression(SSL *s)
2987 const void *SSL_get_current_expansion(SSL *s)
2993 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2995 if (s->compress != NULL)
2996 return (s->compress->meth);
3000 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3002 if (s->expand != NULL)
3003 return (s->expand->meth);
3008 int ssl_init_wbio_buffer(SSL *s, int push)
3012 if (s->bbio == NULL) {
3013 bbio = BIO_new(BIO_f_buffer());
3019 if (s->bbio == s->wbio)
3020 s->wbio = BIO_pop(s->wbio);
3022 (void)BIO_reset(bbio);
3023 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3024 if (!BIO_set_read_buffer_size(bbio, 1)) {
3025 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3029 if (s->wbio != bbio)
3030 s->wbio = BIO_push(bbio, s->wbio);
3032 if (s->wbio == bbio)
3033 s->wbio = BIO_pop(bbio);
3038 void ssl_free_wbio_buffer(SSL *s)
3040 if (s->bbio == NULL)
3043 if (s->bbio == s->wbio) {
3044 /* remove buffering */
3045 s->wbio = BIO_pop(s->wbio);
3046 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
3047 * adding one more preprocessor symbol */
3048 assert(s->wbio != NULL);
3055 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3057 ctx->quiet_shutdown = mode;
3060 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3062 return (ctx->quiet_shutdown);
3065 void SSL_set_quiet_shutdown(SSL *s, int mode)
3067 s->quiet_shutdown = mode;
3070 int SSL_get_quiet_shutdown(const SSL *s)
3072 return (s->quiet_shutdown);
3075 void SSL_set_shutdown(SSL *s, int mode)
3080 int SSL_get_shutdown(const SSL *s)
3082 return (s->shutdown);
3085 int SSL_version(const SSL *s)
3087 return (s->version);
3090 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3095 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3097 CERT *ocert = ssl->cert;
3098 if (ssl->ctx == ctx)
3100 #ifndef OPENSSL_NO_TLSEXT
3102 ctx = ssl->initial_ctx;
3104 ssl->cert = ssl_cert_dup(ctx->cert);
3106 /* Preserve any already negotiated parameters */
3108 ssl->cert->peer_sigalgs = ocert->peer_sigalgs;
3109 ssl->cert->peer_sigalgslen = ocert->peer_sigalgslen;
3110 ocert->peer_sigalgs = NULL;
3111 ssl->cert->ciphers_raw = ocert->ciphers_raw;
3112 ssl->cert->ciphers_rawlen = ocert->ciphers_rawlen;
3113 ocert->ciphers_raw = NULL;
3115 ssl_cert_free(ocert);
3119 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3120 * so setter APIs must prevent invalid lengths from entering the system.
3122 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3125 * If the session ID context matches that of the parent SSL_CTX,
3126 * inherit it from the new SSL_CTX as well. If however the context does
3127 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3128 * leave it unchanged.
3130 if ((ssl->ctx != NULL) &&
3131 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3132 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3133 ssl->sid_ctx_length = ctx->sid_ctx_length;
3134 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3137 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3138 if (ssl->ctx != NULL)
3139 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3145 #ifndef OPENSSL_NO_STDIO
3146 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3148 return (X509_STORE_set_default_paths(ctx->cert_store));
3151 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3154 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3158 void SSL_set_info_callback(SSL *ssl,
3159 void (*cb) (const SSL *ssl, int type, int val))
3161 ssl->info_callback = cb;
3165 * One compiler (Diab DCC) doesn't like argument names in returned function
3168 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3171 return ssl->info_callback;
3174 int SSL_state(const SSL *ssl)
3176 return (ssl->state);
3179 void SSL_set_state(SSL *ssl, int state)
3184 void SSL_set_verify_result(SSL *ssl, long arg)
3186 ssl->verify_result = arg;
3189 long SSL_get_verify_result(const SSL *ssl)
3191 return (ssl->verify_result);
3194 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3195 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3197 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3198 new_func, dup_func, free_func);
3201 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3203 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3206 void *SSL_get_ex_data(const SSL *s, int idx)
3208 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3211 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3212 CRYPTO_EX_dup *dup_func,
3213 CRYPTO_EX_free *free_func)
3215 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3216 new_func, dup_func, free_func);
3219 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3221 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3224 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3226 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3234 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3236 return (ctx->cert_store);
3239 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3241 if (ctx->cert_store != NULL)
3242 X509_STORE_free(ctx->cert_store);
3243 ctx->cert_store = store;
3246 int SSL_want(const SSL *s)
3248 return (s->rwstate);
3252 * \brief Set the callback for generating temporary RSA keys.
3253 * \param ctx the SSL context.
3254 * \param cb the callback
3257 #ifndef OPENSSL_NO_RSA
3258 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3262 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3265 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3269 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3275 * \brief The RSA temporary key callback function.
3276 * \param ssl the SSL session.
3277 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3278 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3279 * of the required key in bits.
3280 * \return the temporary RSA key.
3281 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3284 RSA *cb(SSL *ssl, int is_export, int keylength)
3290 * \brief Set the callback for generating temporary DH keys.
3291 * \param ctx the SSL context.
3292 * \param dh the callback
3295 #ifndef OPENSSL_NO_DH
3296 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3297 DH *(*dh) (SSL *ssl, int is_export,
3300 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3303 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3306 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3310 #ifndef OPENSSL_NO_ECDH
3311 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3312 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3315 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3316 (void (*)(void))ecdh);
3319 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3320 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3323 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3327 #ifndef OPENSSL_NO_PSK
3328 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3330 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3331 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3332 SSL_R_DATA_LENGTH_TOO_LONG);
3335 if (ctx->psk_identity_hint != NULL)
3336 OPENSSL_free(ctx->psk_identity_hint);
3337 if (identity_hint != NULL) {
3338 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3339 if (ctx->psk_identity_hint == NULL)
3342 ctx->psk_identity_hint = NULL;
3346 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3351 if (s->session == NULL)
3352 return 1; /* session not created yet, ignored */
3354 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3355 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3358 if (s->session->psk_identity_hint != NULL)
3359 OPENSSL_free(s->session->psk_identity_hint);
3360 if (identity_hint != NULL) {
3361 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3362 if (s->session->psk_identity_hint == NULL)
3365 s->session->psk_identity_hint = NULL;
3369 const char *SSL_get_psk_identity_hint(const SSL *s)
3371 if (s == NULL || s->session == NULL)
3373 return (s->session->psk_identity_hint);
3376 const char *SSL_get_psk_identity(const SSL *s)
3378 if (s == NULL || s->session == NULL)
3380 return (s->session->psk_identity);
3383 void SSL_set_psk_client_callback(SSL *s,
3384 unsigned int (*cb) (SSL *ssl,
3393 s->psk_client_callback = cb;
3396 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3397 unsigned int (*cb) (SSL *ssl,
3406 ctx->psk_client_callback = cb;
3409 void SSL_set_psk_server_callback(SSL *s,
3410 unsigned int (*cb) (SSL *ssl,
3411 const char *identity,
3416 s->psk_server_callback = cb;
3419 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3420 unsigned int (*cb) (SSL *ssl,
3421 const char *identity,
3426 ctx->psk_server_callback = cb;
3430 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3431 void (*cb) (int write_p, int version,
3432 int content_type, const void *buf,
3433 size_t len, SSL *ssl, void *arg))
3435 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3438 void SSL_set_msg_callback(SSL *ssl,
3439 void (*cb) (int write_p, int version,
3440 int content_type, const void *buf,
3441 size_t len, SSL *ssl, void *arg))
3443 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3446 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3447 int (*cb) (SSL *ssl,
3451 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3452 (void (*)(void))cb);
3455 void SSL_set_not_resumable_session_callback(SSL *ssl,
3456 int (*cb) (SSL *ssl,
3457 int is_forward_secure))
3459 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3460 (void (*)(void))cb);
3464 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3465 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3466 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3470 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3472 ssl_clear_hash_ctx(hash);
3473 *hash = EVP_MD_CTX_create();
3475 EVP_DigestInit_ex(*hash, md, NULL);
3479 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3483 EVP_MD_CTX_destroy(*hash);
3487 /* Retrieve handshake hashes */
3488 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3490 unsigned char *p = out;
3495 EVP_MD_CTX_init(&ctx);
3496 for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
3497 if (mask & ssl_get_algorithm2(s)) {
3498 int hashsize = EVP_MD_size(md);
3499 EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
3500 if (!hdgst || hashsize < 0 || hashsize > outlen)
3502 if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
3504 if (!EVP_DigestFinal_ex(&ctx, p, NULL))
3512 EVP_MD_CTX_cleanup(&ctx);
3516 void SSL_set_debug(SSL *s, int debug)
3521 int SSL_cache_hit(SSL *s)
3526 int SSL_is_server(SSL *s)
3531 void SSL_set_security_level(SSL *s, int level)
3533 s->cert->sec_level = level;
3536 int SSL_get_security_level(const SSL *s)
3538 return s->cert->sec_level;
3541 void SSL_set_security_callback(SSL *s,
3542 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3543 int bits, int nid, void *other,
3546 s->cert->sec_cb = cb;
3549 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3551 void *other, void *ex) {
3552 return s->cert->sec_cb;
3555 void SSL_set0_security_ex_data(SSL *s, void *ex)
3557 s->cert->sec_ex = ex;
3560 void *SSL_get0_security_ex_data(const SSL *s)
3562 return s->cert->sec_ex;
3565 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3567 ctx->cert->sec_level = level;
3570 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3572 return ctx->cert->sec_level;
3575 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3576 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3577 int bits, int nid, void *other,
3580 ctx->cert->sec_cb = cb;
3583 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3589 return ctx->cert->sec_cb;
3592 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3594 ctx->cert->sec_ex = ex;
3597 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3599 return ctx->cert->sec_ex;
3602 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);