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 <openssl/objects.h>
151 #include <openssl/lhash.h>
152 #include <openssl/x509v3.h>
153 #include <openssl/rand.h>
154 #include <openssl/ocsp.h>
155 #ifndef OPENSSL_NO_DH
156 # include <openssl/dh.h>
158 #ifndef OPENSSL_NO_ENGINE
159 # include <openssl/engine.h>
162 const char *SSL_version_str = OPENSSL_VERSION_TEXT;
164 SSL3_ENC_METHOD ssl3_undef_enc_method = {
166 * evil casts, but these functions are only called if there's a library
169 (int (*)(SSL *, int))ssl_undefined_function,
170 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
171 ssl_undefined_function,
172 (int (*)(SSL *, unsigned char *, unsigned char *, int))
173 ssl_undefined_function,
174 (int (*)(SSL *, int))ssl_undefined_function,
175 (int (*)(SSL *, const char *, int, unsigned char *))
176 ssl_undefined_function,
177 0, /* finish_mac_length */
178 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
179 NULL, /* client_finished_label */
180 0, /* client_finished_label_len */
181 NULL, /* server_finished_label */
182 0, /* server_finished_label_len */
183 (int (*)(int))ssl_undefined_function,
184 (int (*)(SSL *, unsigned char *, size_t, const char *,
185 size_t, const unsigned char *, size_t,
186 int use_context))ssl_undefined_function,
189 static void clear_ciphers(SSL *s)
191 /* clear the current cipher */
192 ssl_clear_cipher_ctx(s);
193 ssl_clear_hash_ctx(&s->read_hash);
194 ssl_clear_hash_ctx(&s->write_hash);
197 int SSL_clear(SSL *s)
199 if (s->method == NULL) {
200 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
204 if (ssl_clear_bad_session(s)) {
205 SSL_SESSION_free(s->session);
213 if (s->renegotiate) {
214 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
220 s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT);
222 s->version = s->method->version;
223 s->client_version = s->version;
224 s->rwstate = SSL_NOTHING;
226 BUF_MEM_free(s->init_buf);
232 * Check to see if we were changed into a different method, if so, revert
233 * back if we are not doing session-id reuse.
235 if (!s->in_handshake && (s->session == NULL)
236 && (s->method != s->ctx->method)) {
237 s->method->ssl_free(s);
238 s->method = s->ctx->method;
239 if (!s->method->ssl_new(s))
242 s->method->ssl_clear(s);
244 RECORD_LAYER_clear(&s->rlayer);
249 /** Used to change an SSL_CTXs default SSL method type */
250 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
252 STACK_OF(SSL_CIPHER) *sk;
256 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
257 &(ctx->cipher_list_by_id),
258 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
259 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
260 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
261 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
267 SSL *SSL_new(SSL_CTX *ctx)
272 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
275 if (ctx->method == NULL) {
276 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
280 s = OPENSSL_malloc(sizeof(*s));
283 memset(s, 0, sizeof(*s));
285 RECORD_LAYER_init(&s->rlayer, s);
287 s->options = ctx->options;
289 s->max_cert_list = ctx->max_cert_list;
292 * Earlier library versions used to copy the pointer to the CERT, not
293 * its contents; only when setting new parameters for the per-SSL
294 * copy, ssl_cert_new would be called (and the direct reference to
295 * the per-SSL_CTX settings would be lost, but those still were
296 * indirectly accessed for various purposes, and for that reason they
297 * used to be known as s->ctx->default_cert). Now we don't look at the
298 * SSL_CTX's CERT after having duplicated it once.
300 s->cert = ssl_cert_dup(ctx->cert);
304 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
305 s->msg_callback = ctx->msg_callback;
306 s->msg_callback_arg = ctx->msg_callback_arg;
307 s->verify_mode = ctx->verify_mode;
308 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
309 s->sid_ctx_length = ctx->sid_ctx_length;
310 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
311 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
312 s->verify_callback = ctx->default_verify_callback;
313 s->generate_session_id = ctx->generate_session_id;
315 s->param = X509_VERIFY_PARAM_new();
318 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
319 s->quiet_shutdown = ctx->quiet_shutdown;
320 s->max_send_fragment = ctx->max_send_fragment;
322 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
324 s->tlsext_debug_cb = 0;
325 s->tlsext_debug_arg = NULL;
326 s->tlsext_ticket_expected = 0;
327 s->tlsext_status_type = -1;
328 s->tlsext_status_expected = 0;
329 s->tlsext_ocsp_ids = NULL;
330 s->tlsext_ocsp_exts = NULL;
331 s->tlsext_ocsp_resp = NULL;
332 s->tlsext_ocsp_resplen = -1;
333 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
334 s->initial_ctx = ctx;
335 # ifndef OPENSSL_NO_EC
336 if (ctx->tlsext_ecpointformatlist) {
337 s->tlsext_ecpointformatlist =
338 BUF_memdup(ctx->tlsext_ecpointformatlist,
339 ctx->tlsext_ecpointformatlist_length);
340 if (!s->tlsext_ecpointformatlist)
342 s->tlsext_ecpointformatlist_length =
343 ctx->tlsext_ecpointformatlist_length;
345 if (ctx->tlsext_ellipticcurvelist) {
346 s->tlsext_ellipticcurvelist =
347 BUF_memdup(ctx->tlsext_ellipticcurvelist,
348 ctx->tlsext_ellipticcurvelist_length);
349 if (!s->tlsext_ellipticcurvelist)
351 s->tlsext_ellipticcurvelist_length =
352 ctx->tlsext_ellipticcurvelist_length;
355 # ifndef OPENSSL_NO_NEXTPROTONEG
356 s->next_proto_negotiated = NULL;
359 if (s->ctx->alpn_client_proto_list) {
360 s->alpn_client_proto_list =
361 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
362 if (s->alpn_client_proto_list == NULL)
364 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
365 s->ctx->alpn_client_proto_list_len);
366 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
369 s->verify_result = X509_V_OK;
371 s->method = ctx->method;
373 if (!s->method->ssl_new(s))
377 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
382 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
384 #ifndef OPENSSL_NO_PSK
385 s->psk_client_callback = ctx->psk_client_callback;
386 s->psk_server_callback = ctx->psk_server_callback;
392 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
396 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
397 unsigned int sid_ctx_len)
399 if (sid_ctx_len > sizeof ctx->sid_ctx) {
400 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
401 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
404 ctx->sid_ctx_length = sid_ctx_len;
405 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
410 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
411 unsigned int sid_ctx_len)
413 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
414 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
415 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
418 ssl->sid_ctx_length = sid_ctx_len;
419 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
424 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
426 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
427 ctx->generate_session_id = cb;
428 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
432 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
434 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
435 ssl->generate_session_id = cb;
436 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
440 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
444 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
445 * we can "construct" a session to give us the desired check - ie. to
446 * find if there's a session in the hash table that would conflict with
447 * any new session built out of this id/id_len and the ssl_version in use
452 if (id_len > sizeof r.session_id)
455 r.ssl_version = ssl->version;
456 r.session_id_length = id_len;
457 memcpy(r.session_id, id, id_len);
459 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
460 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
461 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
465 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
467 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
470 int SSL_set_purpose(SSL *s, int purpose)
472 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
475 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
477 return X509_VERIFY_PARAM_set_trust(s->param, trust);
480 int SSL_set_trust(SSL *s, int trust)
482 return X509_VERIFY_PARAM_set_trust(s->param, trust);
485 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
487 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
490 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
492 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
495 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
500 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
505 void SSL_certs_clear(SSL *s)
507 ssl_cert_clear_certs(s->cert);
510 void SSL_free(SSL *s)
517 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
525 fprintf(stderr, "SSL_free, bad reference count\n");
530 X509_VERIFY_PARAM_free(s->param);
531 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
533 if (s->bbio != NULL) {
534 /* If the buffering BIO is in place, pop it off */
535 if (s->bbio == s->wbio) {
536 s->wbio = BIO_pop(s->wbio);
541 BIO_free_all(s->rbio);
542 if (s->wbio != s->rbio)
543 BIO_free_all(s->wbio);
545 BUF_MEM_free(s->init_buf);
547 /* add extra stuff */
548 sk_SSL_CIPHER_free(s->cipher_list);
549 sk_SSL_CIPHER_free(s->cipher_list_by_id);
551 /* Make the next call work :-) */
552 if (s->session != NULL) {
553 ssl_clear_bad_session(s);
554 SSL_SESSION_free(s->session);
559 ssl_cert_free(s->cert);
560 /* Free up if allocated */
562 OPENSSL_free(s->tlsext_hostname);
563 SSL_CTX_free(s->initial_ctx);
564 #ifndef OPENSSL_NO_EC
565 OPENSSL_free(s->tlsext_ecpointformatlist);
566 OPENSSL_free(s->tlsext_ellipticcurvelist);
567 #endif /* OPENSSL_NO_EC */
568 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
569 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
570 OPENSSL_free(s->tlsext_ocsp_resp);
571 OPENSSL_free(s->alpn_client_proto_list);
573 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
575 if (s->method != NULL)
576 s->method->ssl_free(s);
578 RECORD_LAYER_release(&s->rlayer);
580 SSL_CTX_free(s->ctx);
582 #if !defined(OPENSSL_NO_NEXTPROTONEG)
583 OPENSSL_free(s->next_proto_negotiated);
586 #ifndef OPENSSL_NO_SRTP
587 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
593 void SSL_set_rbio(SSL *s, BIO *rbio)
596 BIO_free_all(s->rbio);
600 void SSL_set_wbio(SSL *s, BIO *wbio)
603 * If the output buffering BIO is still in place, remove it
605 if (s->bbio != NULL) {
606 if (s->wbio == s->bbio) {
607 s->wbio = s->wbio->next_bio;
608 s->bbio->next_bio = NULL;
611 if (s->wbio != wbio && s->rbio != s->wbio)
612 BIO_free_all(s->wbio);
616 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
618 SSL_set_wbio(s, wbio);
619 SSL_set_rbio(s, rbio);
622 BIO *SSL_get_rbio(const SSL *s)
627 BIO *SSL_get_wbio(const SSL *s)
632 int SSL_get_fd(const SSL *s)
634 return (SSL_get_rfd(s));
637 int SSL_get_rfd(const SSL *s)
643 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
649 int SSL_get_wfd(const SSL *s)
655 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
661 #ifndef OPENSSL_NO_SOCK
662 int SSL_set_fd(SSL *s, int fd)
667 bio = BIO_new(BIO_s_socket());
670 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
673 BIO_set_fd(bio, fd, BIO_NOCLOSE);
674 SSL_set_bio(s, bio, bio);
680 int SSL_set_wfd(SSL *s, int fd)
685 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
686 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
687 bio = BIO_new(BIO_s_socket());
690 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
693 BIO_set_fd(bio, fd, BIO_NOCLOSE);
694 SSL_set_bio(s, SSL_get_rbio(s), bio);
696 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
702 int SSL_set_rfd(SSL *s, int fd)
707 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
708 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
709 bio = BIO_new(BIO_s_socket());
712 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
715 BIO_set_fd(bio, fd, BIO_NOCLOSE);
716 SSL_set_bio(s, bio, SSL_get_wbio(s));
718 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
725 /* return length of latest Finished message we sent, copy to 'buf' */
726 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
731 ret = s->s3->tmp.finish_md_len;
734 memcpy(buf, s->s3->tmp.finish_md, count);
739 /* return length of latest Finished message we expected, copy to 'buf' */
740 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
745 ret = s->s3->tmp.peer_finish_md_len;
748 memcpy(buf, s->s3->tmp.peer_finish_md, count);
753 int SSL_get_verify_mode(const SSL *s)
755 return (s->verify_mode);
758 int SSL_get_verify_depth(const SSL *s)
760 return X509_VERIFY_PARAM_get_depth(s->param);
763 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
764 return (s->verify_callback);
767 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
769 return (ctx->verify_mode);
772 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
774 return X509_VERIFY_PARAM_get_depth(ctx->param);
777 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
778 return (ctx->default_verify_callback);
781 void SSL_set_verify(SSL *s, int mode,
782 int (*callback) (int ok, X509_STORE_CTX *ctx))
784 s->verify_mode = mode;
785 if (callback != NULL)
786 s->verify_callback = callback;
789 void SSL_set_verify_depth(SSL *s, int depth)
791 X509_VERIFY_PARAM_set_depth(s->param, depth);
794 void SSL_set_read_ahead(SSL *s, int yes)
796 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
799 int SSL_get_read_ahead(const SSL *s)
801 return RECORD_LAYER_get_read_ahead(&s->rlayer);
804 int SSL_pending(const SSL *s)
807 * SSL_pending cannot work properly if read-ahead is enabled
808 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
809 * impossible to fix since SSL_pending cannot report errors that may be
810 * observed while scanning the new data. (Note that SSL_pending() is
811 * often used as a boolean value, so we'd better not return -1.)
813 return (s->method->ssl_pending(s));
816 X509 *SSL_get_peer_certificate(const SSL *s)
820 if ((s == NULL) || (s->session == NULL))
823 r = s->session->peer;
828 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
833 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
837 if ((s == NULL) || (s->session == NULL))
840 r = s->session->peer_chain;
843 * If we are a client, cert_chain includes the peer's own certificate; if
844 * we are a server, it does not.
851 * Now in theory, since the calling process own 't' it should be safe to
852 * modify. We need to be able to read f without being hassled
854 int SSL_copy_session_id(SSL *t, const SSL *f)
856 /* Do we need to to SSL locking? */
857 if (!SSL_set_session(t, SSL_get_session(f))) {
862 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
864 if (t->method != f->method) {
865 t->method->ssl_free(t); /* cleanup current */
866 t->method = f->method; /* change method */
867 t->method->ssl_new(t); /* setup new */
870 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
871 ssl_cert_free(t->cert);
873 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
880 /* Fix this so it checks all the valid key/cert options */
881 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
884 (ctx->cert->key->x509 == NULL)) {
885 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
886 SSL_R_NO_CERTIFICATE_ASSIGNED);
889 if (ctx->cert->key->privatekey == NULL) {
890 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
891 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
894 return (X509_check_private_key
895 (ctx->cert->key->x509, ctx->cert->key->privatekey));
898 /* Fix this function so that it takes an optional type parameter */
899 int SSL_check_private_key(const SSL *ssl)
902 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
905 if (ssl->cert->key->x509 == NULL) {
906 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
909 if (ssl->cert->key->privatekey == NULL) {
910 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
913 return (X509_check_private_key(ssl->cert->key->x509,
914 ssl->cert->key->privatekey));
917 int SSL_accept(SSL *s)
919 if (s->handshake_func == 0)
920 /* Not properly initialized yet */
921 SSL_set_accept_state(s);
923 return (s->method->ssl_accept(s));
926 int SSL_connect(SSL *s)
928 if (s->handshake_func == 0)
929 /* Not properly initialized yet */
930 SSL_set_connect_state(s);
932 return (s->method->ssl_connect(s));
935 long SSL_get_default_timeout(const SSL *s)
937 return (s->method->get_timeout());
940 int SSL_read(SSL *s, void *buf, int num)
942 if (s->handshake_func == 0) {
943 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
947 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
948 s->rwstate = SSL_NOTHING;
951 return (s->method->ssl_read(s, buf, num));
954 int SSL_peek(SSL *s, void *buf, int num)
956 if (s->handshake_func == 0) {
957 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
961 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
964 return (s->method->ssl_peek(s, buf, num));
967 int SSL_write(SSL *s, const void *buf, int num)
969 if (s->handshake_func == 0) {
970 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
974 if (s->shutdown & SSL_SENT_SHUTDOWN) {
975 s->rwstate = SSL_NOTHING;
976 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
979 return (s->method->ssl_write(s, buf, num));
982 int SSL_shutdown(SSL *s)
985 * Note that this function behaves differently from what one might
986 * expect. Return values are 0 for no success (yet), 1 for success; but
987 * calling it once is usually not enough, even if blocking I/O is used
988 * (see ssl3_shutdown).
991 if (s->handshake_func == 0) {
992 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
996 if ((s != NULL) && !SSL_in_init(s))
997 return (s->method->ssl_shutdown(s));
1002 int SSL_renegotiate(SSL *s)
1004 if (s->renegotiate == 0)
1009 return (s->method->ssl_renegotiate(s));
1012 int SSL_renegotiate_abbreviated(SSL *s)
1014 if (s->renegotiate == 0)
1019 return (s->method->ssl_renegotiate(s));
1022 int SSL_renegotiate_pending(SSL *s)
1025 * becomes true when negotiation is requested; false again once a
1026 * handshake has finished
1028 return (s->renegotiate != 0);
1031 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1036 case SSL_CTRL_GET_READ_AHEAD:
1037 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1038 case SSL_CTRL_SET_READ_AHEAD:
1039 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1040 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1043 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1044 s->msg_callback_arg = parg;
1047 case SSL_CTRL_OPTIONS:
1048 return (s->options |= larg);
1049 case SSL_CTRL_CLEAR_OPTIONS:
1050 return (s->options &= ~larg);
1052 return (s->mode |= larg);
1053 case SSL_CTRL_CLEAR_MODE:
1054 return (s->mode &= ~larg);
1055 case SSL_CTRL_GET_MAX_CERT_LIST:
1056 return (s->max_cert_list);
1057 case SSL_CTRL_SET_MAX_CERT_LIST:
1058 l = s->max_cert_list;
1059 s->max_cert_list = larg;
1061 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1062 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1064 s->max_send_fragment = larg;
1066 case SSL_CTRL_GET_RI_SUPPORT:
1068 return s->s3->send_connection_binding;
1071 case SSL_CTRL_CERT_FLAGS:
1072 return (s->cert->cert_flags |= larg);
1073 case SSL_CTRL_CLEAR_CERT_FLAGS:
1074 return (s->cert->cert_flags &= ~larg);
1076 case SSL_CTRL_GET_RAW_CIPHERLIST:
1078 if (s->s3->tmp.ciphers_raw == NULL)
1080 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1081 return (int)s->s3->tmp.ciphers_rawlen;
1083 return ssl_put_cipher_by_char(s, NULL, NULL);
1084 case SSL_CTRL_GET_EXTMS_SUPPORT:
1085 if (!s->session || SSL_in_init(s) || s->in_handshake)
1087 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1092 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1096 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1099 case SSL_CTRL_SET_MSG_CALLBACK:
1100 s->msg_callback = (void (*)
1101 (int write_p, int version, int content_type,
1102 const void *buf, size_t len, SSL *ssl,
1107 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1111 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1113 return ctx->sessions;
1116 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1119 /* For some cases with ctx == NULL perform syntax checks */
1122 #ifndef OPENSSL_NO_EC
1123 case SSL_CTRL_SET_CURVES_LIST:
1124 return tls1_set_curves_list(NULL, NULL, parg);
1126 case SSL_CTRL_SET_SIGALGS_LIST:
1127 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1128 return tls1_set_sigalgs_list(NULL, parg, 0);
1135 case SSL_CTRL_GET_READ_AHEAD:
1136 return (ctx->read_ahead);
1137 case SSL_CTRL_SET_READ_AHEAD:
1138 l = ctx->read_ahead;
1139 ctx->read_ahead = larg;
1142 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1143 ctx->msg_callback_arg = parg;
1146 case SSL_CTRL_GET_MAX_CERT_LIST:
1147 return (ctx->max_cert_list);
1148 case SSL_CTRL_SET_MAX_CERT_LIST:
1149 l = ctx->max_cert_list;
1150 ctx->max_cert_list = larg;
1153 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1154 l = ctx->session_cache_size;
1155 ctx->session_cache_size = larg;
1157 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1158 return (ctx->session_cache_size);
1159 case SSL_CTRL_SET_SESS_CACHE_MODE:
1160 l = ctx->session_cache_mode;
1161 ctx->session_cache_mode = larg;
1163 case SSL_CTRL_GET_SESS_CACHE_MODE:
1164 return (ctx->session_cache_mode);
1166 case SSL_CTRL_SESS_NUMBER:
1167 return (lh_SSL_SESSION_num_items(ctx->sessions));
1168 case SSL_CTRL_SESS_CONNECT:
1169 return (ctx->stats.sess_connect);
1170 case SSL_CTRL_SESS_CONNECT_GOOD:
1171 return (ctx->stats.sess_connect_good);
1172 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1173 return (ctx->stats.sess_connect_renegotiate);
1174 case SSL_CTRL_SESS_ACCEPT:
1175 return (ctx->stats.sess_accept);
1176 case SSL_CTRL_SESS_ACCEPT_GOOD:
1177 return (ctx->stats.sess_accept_good);
1178 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1179 return (ctx->stats.sess_accept_renegotiate);
1180 case SSL_CTRL_SESS_HIT:
1181 return (ctx->stats.sess_hit);
1182 case SSL_CTRL_SESS_CB_HIT:
1183 return (ctx->stats.sess_cb_hit);
1184 case SSL_CTRL_SESS_MISSES:
1185 return (ctx->stats.sess_miss);
1186 case SSL_CTRL_SESS_TIMEOUTS:
1187 return (ctx->stats.sess_timeout);
1188 case SSL_CTRL_SESS_CACHE_FULL:
1189 return (ctx->stats.sess_cache_full);
1190 case SSL_CTRL_OPTIONS:
1191 return (ctx->options |= larg);
1192 case SSL_CTRL_CLEAR_OPTIONS:
1193 return (ctx->options &= ~larg);
1195 return (ctx->mode |= larg);
1196 case SSL_CTRL_CLEAR_MODE:
1197 return (ctx->mode &= ~larg);
1198 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1199 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1201 ctx->max_send_fragment = larg;
1203 case SSL_CTRL_CERT_FLAGS:
1204 return (ctx->cert->cert_flags |= larg);
1205 case SSL_CTRL_CLEAR_CERT_FLAGS:
1206 return (ctx->cert->cert_flags &= ~larg);
1208 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1212 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1215 case SSL_CTRL_SET_MSG_CALLBACK:
1216 ctx->msg_callback = (void (*)
1217 (int write_p, int version, int content_type,
1218 const void *buf, size_t len, SSL *ssl,
1223 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1227 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1235 return ((l > 0) ? 1 : -1);
1238 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1239 const SSL_CIPHER *const *bp)
1243 l = (*ap)->id - (*bp)->id;
1247 return ((l > 0) ? 1 : -1);
1250 /** return a STACK of the ciphers available for the SSL and in order of
1252 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1255 if (s->cipher_list != NULL) {
1256 return (s->cipher_list);
1257 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1258 return (s->ctx->cipher_list);
1264 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
1266 if ((s == NULL) || (s->session == NULL) || !s->server)
1268 return s->session->ciphers;
1271 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1273 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1275 ciphers = SSL_get_ciphers(s);
1278 ssl_set_client_disabled(s);
1279 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1280 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1281 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1283 sk = sk_SSL_CIPHER_new_null();
1286 if (!sk_SSL_CIPHER_push(sk, c)) {
1287 sk_SSL_CIPHER_free(sk);
1295 /** return a STACK of the ciphers available for the SSL and in order of
1297 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1300 if (s->cipher_list_by_id != NULL) {
1301 return (s->cipher_list_by_id);
1302 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1303 return (s->ctx->cipher_list_by_id);
1309 /** The old interface to get the same thing as SSL_get_ciphers() */
1310 const char *SSL_get_cipher_list(const SSL *s, int n)
1313 STACK_OF(SSL_CIPHER) *sk;
1317 sk = SSL_get_ciphers(s);
1318 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1320 c = sk_SSL_CIPHER_value(sk, n);
1326 /** specify the ciphers to be used by default by the SSL_CTX */
1327 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1329 STACK_OF(SSL_CIPHER) *sk;
1331 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1332 &ctx->cipher_list_by_id, str, ctx->cert);
1334 * ssl_create_cipher_list may return an empty stack if it was unable to
1335 * find a cipher matching the given rule string (for example if the rule
1336 * string specifies a cipher which has been disabled). This is not an
1337 * error as far as ssl_create_cipher_list is concerned, and hence
1338 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1342 else if (sk_SSL_CIPHER_num(sk) == 0) {
1343 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1349 /** specify the ciphers to be used by the SSL */
1350 int SSL_set_cipher_list(SSL *s, const char *str)
1352 STACK_OF(SSL_CIPHER) *sk;
1354 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1355 &s->cipher_list_by_id, str, s->cert);
1356 /* see comment in SSL_CTX_set_cipher_list */
1359 else if (sk_SSL_CIPHER_num(sk) == 0) {
1360 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1366 /* works well for SSLv2, not so good for SSLv3 */
1367 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1370 STACK_OF(SSL_CIPHER) *sk;
1374 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1378 sk = s->session->ciphers;
1380 if (sk_SSL_CIPHER_num(sk) == 0)
1383 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1386 c = sk_SSL_CIPHER_value(sk, i);
1387 n = strlen(c->name);
1403 /** return a servername extension value if provided in Client Hello, or NULL.
1404 * So far, only host_name types are defined (RFC 3546).
1407 const char *SSL_get_servername(const SSL *s, const int type)
1409 if (type != TLSEXT_NAMETYPE_host_name)
1412 return s->session && !s->tlsext_hostname ?
1413 s->session->tlsext_hostname : s->tlsext_hostname;
1416 int SSL_get_servername_type(const SSL *s)
1419 && (!s->tlsext_hostname ? s->session->
1420 tlsext_hostname : s->tlsext_hostname))
1421 return TLSEXT_NAMETYPE_host_name;
1426 * SSL_select_next_proto implements the standard protocol selection. It is
1427 * expected that this function is called from the callback set by
1428 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1429 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1430 * not included in the length. A byte string of length 0 is invalid. No byte
1431 * string may be truncated. The current, but experimental algorithm for
1432 * selecting the protocol is: 1) If the server doesn't support NPN then this
1433 * is indicated to the callback. In this case, the client application has to
1434 * abort the connection or have a default application level protocol. 2) If
1435 * the server supports NPN, but advertises an empty list then the client
1436 * selects the first protcol in its list, but indicates via the API that this
1437 * fallback case was enacted. 3) Otherwise, the client finds the first
1438 * protocol in the server's list that it supports and selects this protocol.
1439 * This is because it's assumed that the server has better information about
1440 * which protocol a client should use. 4) If the client doesn't support any
1441 * of the server's advertised protocols, then this is treated the same as
1442 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1443 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1445 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1446 const unsigned char *server,
1447 unsigned int server_len,
1448 const unsigned char *client,
1449 unsigned int client_len)
1452 const unsigned char *result;
1453 int status = OPENSSL_NPN_UNSUPPORTED;
1456 * For each protocol in server preference order, see if we support it.
1458 for (i = 0; i < server_len;) {
1459 for (j = 0; j < client_len;) {
1460 if (server[i] == client[j] &&
1461 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1462 /* We found a match */
1463 result = &server[i];
1464 status = OPENSSL_NPN_NEGOTIATED;
1474 /* There's no overlap between our protocols and the server's list. */
1476 status = OPENSSL_NPN_NO_OVERLAP;
1479 *out = (unsigned char *)result + 1;
1480 *outlen = result[0];
1484 #ifndef OPENSSL_NO_NEXTPROTONEG
1486 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1487 * client's requested protocol for this connection and returns 0. If the
1488 * client didn't request any protocol, then *data is set to NULL. Note that
1489 * the client can request any protocol it chooses. The value returned from
1490 * this function need not be a member of the list of supported protocols
1491 * provided by the callback.
1493 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1496 *data = s->next_proto_negotiated;
1500 *len = s->next_proto_negotiated_len;
1505 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1506 * a TLS server needs a list of supported protocols for Next Protocol
1507 * Negotiation. The returned list must be in wire format. The list is
1508 * returned by setting |out| to point to it and |outlen| to its length. This
1509 * memory will not be modified, but one should assume that the SSL* keeps a
1510 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1511 * wishes to advertise. Otherwise, no such extension will be included in the
1514 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1515 int (*cb) (SSL *ssl,
1518 unsigned int *outlen,
1519 void *arg), void *arg)
1521 ctx->next_protos_advertised_cb = cb;
1522 ctx->next_protos_advertised_cb_arg = arg;
1526 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1527 * client needs to select a protocol from the server's provided list. |out|
1528 * must be set to point to the selected protocol (which may be within |in|).
1529 * The length of the protocol name must be written into |outlen|. The
1530 * server's advertised protocols are provided in |in| and |inlen|. The
1531 * callback can assume that |in| is syntactically valid. The client must
1532 * select a protocol. It is fatal to the connection if this callback returns
1533 * a value other than SSL_TLSEXT_ERR_OK.
1535 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1536 int (*cb) (SSL *s, unsigned char **out,
1537 unsigned char *outlen,
1538 const unsigned char *in,
1540 void *arg), void *arg)
1542 ctx->next_proto_select_cb = cb;
1543 ctx->next_proto_select_cb_arg = arg;
1548 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1549 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1550 * length-prefixed strings). Returns 0 on success.
1552 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1553 unsigned protos_len)
1555 OPENSSL_free(ctx->alpn_client_proto_list);
1556 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1557 if (!ctx->alpn_client_proto_list)
1559 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1560 ctx->alpn_client_proto_list_len = protos_len;
1566 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1567 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1568 * length-prefixed strings). Returns 0 on success.
1570 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1571 unsigned protos_len)
1573 OPENSSL_free(ssl->alpn_client_proto_list);
1574 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1575 if (!ssl->alpn_client_proto_list)
1577 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1578 ssl->alpn_client_proto_list_len = protos_len;
1584 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1585 * called during ClientHello processing in order to select an ALPN protocol
1586 * from the client's list of offered protocols.
1588 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1589 int (*cb) (SSL *ssl,
1590 const unsigned char **out,
1591 unsigned char *outlen,
1592 const unsigned char *in,
1594 void *arg), void *arg)
1596 ctx->alpn_select_cb = cb;
1597 ctx->alpn_select_cb_arg = arg;
1601 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1602 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1603 * (not including the leading length-prefix byte). If the server didn't
1604 * respond with a negotiated protocol then |*len| will be zero.
1606 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1611 *data = ssl->s3->alpn_selected;
1615 *len = ssl->s3->alpn_selected_len;
1619 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1620 const char *label, size_t llen,
1621 const unsigned char *p, size_t plen,
1624 if (s->version < TLS1_VERSION)
1627 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1632 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1637 ((unsigned int)a->session_id[0]) |
1638 ((unsigned int)a->session_id[1] << 8L) |
1639 ((unsigned long)a->session_id[2] << 16L) |
1640 ((unsigned long)a->session_id[3] << 24L);
1645 * NB: If this function (or indeed the hash function which uses a sort of
1646 * coarser function than this one) is changed, ensure
1647 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1648 * being able to construct an SSL_SESSION that will collide with any existing
1649 * session with a matching session ID.
1651 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1653 if (a->ssl_version != b->ssl_version)
1655 if (a->session_id_length != b->session_id_length)
1657 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1661 * These wrapper functions should remain rather than redeclaring
1662 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1663 * variable. The reason is that the functions aren't static, they're exposed
1666 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1667 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1669 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1671 SSL_CTX *ret = NULL;
1674 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1678 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1679 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1683 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1684 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1687 ret = OPENSSL_malloc(sizeof(*ret));
1691 memset(ret, 0, sizeof(*ret));
1695 ret->cert_store = NULL;
1696 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1697 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1698 ret->session_cache_head = NULL;
1699 ret->session_cache_tail = NULL;
1701 /* We take the system default */
1702 ret->session_timeout = meth->get_timeout();
1704 ret->new_session_cb = 0;
1705 ret->remove_session_cb = 0;
1706 ret->get_session_cb = 0;
1707 ret->generate_session_id = 0;
1709 memset(&ret->stats, 0, sizeof(ret->stats));
1711 ret->references = 1;
1712 ret->quiet_shutdown = 0;
1713 ret->info_callback = NULL;
1714 ret->app_verify_callback = 0;
1715 ret->app_verify_arg = NULL;
1716 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1717 ret->read_ahead = 0;
1718 ret->msg_callback = 0;
1719 ret->msg_callback_arg = NULL;
1720 ret->verify_mode = SSL_VERIFY_NONE;
1721 ret->sid_ctx_length = 0;
1722 ret->default_verify_callback = NULL;
1723 if ((ret->cert = ssl_cert_new()) == NULL)
1726 ret->default_passwd_callback = 0;
1727 ret->default_passwd_callback_userdata = NULL;
1728 ret->client_cert_cb = 0;
1729 ret->app_gen_cookie_cb = 0;
1730 ret->app_verify_cookie_cb = 0;
1732 ret->sessions = lh_SSL_SESSION_new();
1733 if (ret->sessions == NULL)
1735 ret->cert_store = X509_STORE_new();
1736 if (ret->cert_store == NULL)
1739 if (!ssl_create_cipher_list(ret->method,
1740 &ret->cipher_list, &ret->cipher_list_by_id,
1741 SSL_DEFAULT_CIPHER_LIST, ret->cert)
1742 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1743 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1747 ret->param = X509_VERIFY_PARAM_new();
1751 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1752 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1755 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1756 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1760 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1763 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1765 ret->extra_certs = NULL;
1766 /* No compression for DTLS */
1767 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1768 ret->comp_methods = SSL_COMP_get_compression_methods();
1770 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1772 ret->tlsext_servername_callback = 0;
1773 ret->tlsext_servername_arg = NULL;
1774 /* Setup RFC4507 ticket keys */
1775 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1776 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1777 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1778 ret->options |= SSL_OP_NO_TICKET;
1780 ret->tlsext_status_cb = 0;
1781 ret->tlsext_status_arg = NULL;
1783 #ifndef OPENSSL_NO_NEXTPROTONEG
1784 ret->next_protos_advertised_cb = 0;
1785 ret->next_proto_select_cb = 0;
1787 #ifndef OPENSSL_NO_PSK
1788 ret->psk_identity_hint = NULL;
1789 ret->psk_client_callback = NULL;
1790 ret->psk_server_callback = NULL;
1792 #ifndef OPENSSL_NO_SRP
1793 if (!SSL_CTX_SRP_CTX_init(ret))
1796 #ifndef OPENSSL_NO_ENGINE
1797 ret->client_cert_engine = NULL;
1798 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1799 # define eng_strx(x) #x
1800 # define eng_str(x) eng_strx(x)
1801 /* Use specific client engine automatically... ignore errors */
1804 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1807 ENGINE_load_builtin_engines();
1808 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1810 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1816 * Default is to connect to non-RI servers. When RI is more widely
1817 * deployed might change this.
1819 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1823 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
1829 void SSL_CTX_free(SSL_CTX *a)
1836 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
1838 REF_PRINT("SSL_CTX", a);
1844 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
1849 X509_VERIFY_PARAM_free(a->param);
1852 * Free internal session cache. However: the remove_cb() may reference
1853 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1854 * after the sessions were flushed.
1855 * As the ex_data handling routines might also touch the session cache,
1856 * the most secure solution seems to be: empty (flush) the cache, then
1857 * free ex_data, then finally free the cache.
1858 * (See ticket [openssl.org #212].)
1860 if (a->sessions != NULL)
1861 SSL_CTX_flush_sessions(a, 0);
1863 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1864 lh_SSL_SESSION_free(a->sessions);
1865 X509_STORE_free(a->cert_store);
1866 sk_SSL_CIPHER_free(a->cipher_list);
1867 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1868 ssl_cert_free(a->cert);
1869 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
1870 sk_X509_pop_free(a->extra_certs, X509_free);
1871 a->comp_methods = NULL;
1872 #ifndef OPENSSL_NO_SRTP
1873 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
1875 #ifndef OPENSSL_NO_PSK
1876 OPENSSL_free(a->psk_identity_hint);
1878 #ifndef OPENSSL_NO_SRP
1879 SSL_CTX_SRP_CTX_free(a);
1881 #ifndef OPENSSL_NO_ENGINE
1882 if (a->client_cert_engine)
1883 ENGINE_finish(a->client_cert_engine);
1886 #ifndef OPENSSL_NO_EC
1887 OPENSSL_free(a->tlsext_ecpointformatlist);
1888 OPENSSL_free(a->tlsext_ellipticcurvelist);
1890 OPENSSL_free(a->alpn_client_proto_list);
1895 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1897 ctx->default_passwd_callback = cb;
1900 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
1902 ctx->default_passwd_callback_userdata = u;
1905 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
1906 int (*cb) (X509_STORE_CTX *, void *),
1909 ctx->app_verify_callback = cb;
1910 ctx->app_verify_arg = arg;
1913 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
1914 int (*cb) (int, X509_STORE_CTX *))
1916 ctx->verify_mode = mode;
1917 ctx->default_verify_callback = cb;
1920 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
1922 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1925 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
1928 ssl_cert_set_cert_cb(c->cert, cb, arg);
1931 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
1933 ssl_cert_set_cert_cb(s->cert, cb, arg);
1936 void ssl_set_masks(SSL *s, const SSL_CIPHER *cipher)
1940 uint32_t *pvalid = s->s3->tmp.valid_flags;
1941 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
1942 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
1943 int rsa_tmp_export, dh_tmp_export, kl;
1944 unsigned long mask_k, mask_a, emask_k, emask_a;
1945 #ifndef OPENSSL_NO_EC
1946 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
1947 int have_ecdh_tmp, ecdh_ok;
1949 EVP_PKEY *ecc_pkey = NULL;
1950 int signature_nid = 0, pk_nid = 0, md_nid = 0;
1955 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
1957 #ifndef OPENSSL_NO_RSA
1958 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1959 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
1960 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
1962 rsa_tmp = rsa_tmp_export = 0;
1964 #ifndef OPENSSL_NO_DH
1965 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
1966 dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
1968 && DH_size(c->dh_tmp) * 8 <= kl));
1970 dh_tmp = dh_tmp_export = 0;
1973 #ifndef OPENSSL_NO_EC
1974 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
1976 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
1977 rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
1978 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
1979 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1980 rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
1981 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1982 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
1983 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
1984 dh_rsa = pvalid[SSL_PKEY_DH_RSA] & CERT_PKEY_VALID;
1985 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
1986 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
1987 dh_dsa = pvalid[SSL_PKEY_DH_DSA] & CERT_PKEY_VALID;
1988 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
1989 cpk = &(c->pkeys[SSL_PKEY_ECC]);
1990 #ifndef OPENSSL_NO_EC
1991 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2000 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2001 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2002 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2005 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2006 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2007 mask_k |= SSL_kGOST;
2008 mask_a |= SSL_aGOST01;
2010 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2011 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2012 mask_k |= SSL_kGOST;
2013 mask_a |= SSL_aGOST94;
2016 if (rsa_enc || (rsa_tmp && rsa_sign))
2018 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2019 emask_k |= SSL_kRSA;
2022 emask_k |= SSL_kDHE;
2030 emask_k |= SSL_kDHr;
2035 emask_k |= SSL_kDHd;
2037 if (mask_k & (SSL_kDHr | SSL_kDHd))
2040 if (rsa_enc || rsa_sign) {
2042 emask_a |= SSL_aRSA;
2047 emask_a |= SSL_aDSS;
2050 mask_a |= SSL_aNULL;
2051 emask_a |= SSL_aNULL;
2054 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2055 * depending on the key usage extension.
2057 #ifndef OPENSSL_NO_EC
2058 if (have_ecc_cert) {
2059 cpk = &c->pkeys[SSL_PKEY_ECC];
2061 /* This call populates extension flags (ex_flags) */
2062 X509_check_purpose(x, -1, 0);
2063 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2064 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2065 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2066 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2067 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2069 ecc_pkey = X509_get_pubkey(x);
2070 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2071 EVP_PKEY_free(ecc_pkey);
2072 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2073 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2074 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2078 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2079 mask_k |= SSL_kECDHr;
2080 mask_a |= SSL_aECDH;
2081 if (ecc_pkey_size <= 163) {
2082 emask_k |= SSL_kECDHr;
2083 emask_a |= SSL_aECDH;
2087 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2088 mask_k |= SSL_kECDHe;
2089 mask_a |= SSL_aECDH;
2090 if (ecc_pkey_size <= 163) {
2091 emask_k |= SSL_kECDHe;
2092 emask_a |= SSL_aECDH;
2097 mask_a |= SSL_aECDSA;
2098 emask_a |= SSL_aECDSA;
2103 #ifndef OPENSSL_NO_EC
2104 if (have_ecdh_tmp) {
2105 mask_k |= SSL_kECDHE;
2106 emask_k |= SSL_kECDHE;
2110 #ifndef OPENSSL_NO_PSK
2113 emask_k |= SSL_kPSK;
2114 emask_a |= SSL_aPSK;
2115 if (mask_k & SSL_kRSA)
2116 mask_k |= SSL_kRSAPSK;
2117 if (mask_k & SSL_kDHE)
2118 mask_k |= SSL_kDHEPSK;
2119 if (mask_k & SSL_kECDHE)
2120 mask_k |= SSL_kECDHEPSK;
2123 s->s3->tmp.mask_k = mask_k;
2124 s->s3->tmp.mask_a = mask_a;
2125 s->s3->tmp.export_mask_k = emask_k;
2126 s->s3->tmp.export_mask_a = emask_a;
2129 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2130 #define ku_reject(x, usage) \
2131 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2133 #ifndef OPENSSL_NO_EC
2135 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2137 unsigned long alg_k, alg_a;
2138 EVP_PKEY *pkey = NULL;
2140 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2141 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2143 alg_k = cs->algorithm_mkey;
2144 alg_a = cs->algorithm_auth;
2146 if (SSL_C_IS_EXPORT(cs)) {
2147 /* ECDH key length in export ciphers must be <= 163 bits */
2148 pkey = X509_get_pubkey(x);
2151 keysize = EVP_PKEY_bits(pkey);
2152 EVP_PKEY_free(pkey);
2157 /* This call populates the ex_flags field correctly */
2158 X509_check_purpose(x, -1, 0);
2159 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2160 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2161 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2163 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2164 /* key usage, if present, must allow key agreement */
2165 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2166 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2167 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2170 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2171 /* signature alg must be ECDSA */
2172 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2173 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2174 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2178 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2179 /* signature alg must be RSA */
2181 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2182 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2183 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2188 if (alg_a & SSL_aECDSA) {
2189 /* key usage, if present, must allow signing */
2190 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2191 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2192 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2197 return 1; /* all checks are ok */
2202 static int ssl_get_server_cert_index(const SSL *s)
2205 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2206 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2207 idx = SSL_PKEY_RSA_SIGN;
2209 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2213 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2219 if (!s->s3 || !s->s3->tmp.new_cipher)
2221 ssl_set_masks(s, s->s3->tmp.new_cipher);
2223 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2225 * Broken protocol test: return last used certificate: which may mismatch
2228 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2232 i = ssl_get_server_cert_index(s);
2234 /* This may or may not be an error. */
2239 return &c->pkeys[i];
2242 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2245 unsigned long alg_a;
2249 alg_a = cipher->algorithm_auth;
2252 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2254 * Broken protocol test: use last key: which may mismatch the one
2257 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2258 idx = c->key - c->pkeys;
2262 if ((alg_a & SSL_aDSS) &&
2263 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2264 idx = SSL_PKEY_DSA_SIGN;
2265 else if (alg_a & SSL_aRSA) {
2266 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2267 idx = SSL_PKEY_RSA_SIGN;
2268 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2269 idx = SSL_PKEY_RSA_ENC;
2270 } else if ((alg_a & SSL_aECDSA) &&
2271 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2274 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2278 *pmd = s->s3->tmp.md[idx];
2279 return c->pkeys[idx].privatekey;
2282 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2283 size_t *serverinfo_length)
2287 *serverinfo_length = 0;
2290 i = ssl_get_server_cert_index(s);
2294 if (c->pkeys[i].serverinfo == NULL)
2297 *serverinfo = c->pkeys[i].serverinfo;
2298 *serverinfo_length = c->pkeys[i].serverinfo_length;
2302 void ssl_update_cache(SSL *s, int mode)
2307 * If the session_id_length is 0, we are not supposed to cache it, and it
2308 * would be rather hard to do anyway :-)
2310 if (s->session->session_id_length == 0)
2313 i = s->session_ctx->session_cache_mode;
2314 if ((i & mode) && (!s->hit)
2315 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2316 || SSL_CTX_add_session(s->session_ctx, s->session))
2317 && (s->session_ctx->new_session_cb != NULL)) {
2318 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2319 if (!s->session_ctx->new_session_cb(s, s->session))
2320 SSL_SESSION_free(s->session);
2323 /* auto flush every 255 connections */
2324 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2325 if ((((mode & SSL_SESS_CACHE_CLIENT)
2326 ? s->session_ctx->stats.sess_connect_good
2327 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2328 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2333 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2338 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2343 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2348 if (s->method != meth) {
2349 if (s->handshake_func != NULL)
2350 conn = (s->handshake_func == s->method->ssl_connect);
2352 if (s->method->version == meth->version)
2355 s->method->ssl_free(s);
2357 ret = s->method->ssl_new(s);
2361 s->handshake_func = meth->ssl_connect;
2363 s->handshake_func = meth->ssl_accept;
2368 int SSL_get_error(const SSL *s, int i)
2375 return (SSL_ERROR_NONE);
2378 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2379 * where we do encode the error
2381 if ((l = ERR_peek_error()) != 0) {
2382 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2383 return (SSL_ERROR_SYSCALL);
2385 return (SSL_ERROR_SSL);
2388 if ((i < 0) && SSL_want_read(s)) {
2389 bio = SSL_get_rbio(s);
2390 if (BIO_should_read(bio))
2391 return (SSL_ERROR_WANT_READ);
2392 else if (BIO_should_write(bio))
2394 * This one doesn't make too much sense ... We never try to write
2395 * to the rbio, and an application program where rbio and wbio
2396 * are separate couldn't even know what it should wait for.
2397 * However if we ever set s->rwstate incorrectly (so that we have
2398 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2399 * wbio *are* the same, this test works around that bug; so it
2400 * might be safer to keep it.
2402 return (SSL_ERROR_WANT_WRITE);
2403 else if (BIO_should_io_special(bio)) {
2404 reason = BIO_get_retry_reason(bio);
2405 if (reason == BIO_RR_CONNECT)
2406 return (SSL_ERROR_WANT_CONNECT);
2407 else if (reason == BIO_RR_ACCEPT)
2408 return (SSL_ERROR_WANT_ACCEPT);
2410 return (SSL_ERROR_SYSCALL); /* unknown */
2414 if ((i < 0) && SSL_want_write(s)) {
2415 bio = SSL_get_wbio(s);
2416 if (BIO_should_write(bio))
2417 return (SSL_ERROR_WANT_WRITE);
2418 else if (BIO_should_read(bio))
2420 * See above (SSL_want_read(s) with BIO_should_write(bio))
2422 return (SSL_ERROR_WANT_READ);
2423 else if (BIO_should_io_special(bio)) {
2424 reason = BIO_get_retry_reason(bio);
2425 if (reason == BIO_RR_CONNECT)
2426 return (SSL_ERROR_WANT_CONNECT);
2427 else if (reason == BIO_RR_ACCEPT)
2428 return (SSL_ERROR_WANT_ACCEPT);
2430 return (SSL_ERROR_SYSCALL);
2433 if ((i < 0) && SSL_want_x509_lookup(s)) {
2434 return (SSL_ERROR_WANT_X509_LOOKUP);
2438 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2439 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2440 return (SSL_ERROR_ZERO_RETURN);
2442 return (SSL_ERROR_SYSCALL);
2445 int SSL_do_handshake(SSL *s)
2449 if (s->handshake_func == NULL) {
2450 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2454 s->method->ssl_renegotiate_check(s);
2456 if (SSL_in_init(s) || SSL_in_before(s)) {
2457 ret = s->handshake_func(s);
2462 void SSL_set_accept_state(SSL *s)
2466 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2467 s->handshake_func = s->method->ssl_accept;
2471 void SSL_set_connect_state(SSL *s)
2475 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2476 s->handshake_func = s->method->ssl_connect;
2480 int ssl_undefined_function(SSL *s)
2482 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2486 int ssl_undefined_void_function(void)
2488 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2489 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2493 int ssl_undefined_const_function(const SSL *s)
2495 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2496 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2500 SSL_METHOD *ssl_bad_method(int ver)
2502 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2506 const char *SSL_get_version(const SSL *s)
2508 if (s->version == TLS1_2_VERSION)
2510 else if (s->version == TLS1_1_VERSION)
2512 else if (s->version == TLS1_VERSION)
2514 else if (s->version == SSL3_VERSION)
2516 else if (s->version == DTLS1_BAD_VER)
2517 return ("DTLSv0.9");
2518 else if (s->version == DTLS1_VERSION)
2520 else if (s->version == DTLS1_2_VERSION)
2521 return ("DTLSv1.2");
2526 SSL *SSL_dup(SSL *s)
2528 STACK_OF(X509_NAME) *sk;
2533 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2536 ret->version = s->version;
2537 ret->type = s->type;
2538 ret->method = s->method;
2540 if (s->session != NULL) {
2541 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2542 if (!SSL_copy_session_id(ret, s))
2546 * No session has been established yet, so we have to expect that
2547 * s->cert or ret->cert will be changed later -- they should not both
2548 * point to the same object, and thus we can't use
2549 * SSL_copy_session_id.
2552 ret->method->ssl_free(ret);
2553 ret->method = s->method;
2554 ret->method->ssl_new(ret);
2556 if (s->cert != NULL) {
2557 ssl_cert_free(ret->cert);
2558 ret->cert = ssl_cert_dup(s->cert);
2559 if (ret->cert == NULL)
2563 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
2567 ret->options = s->options;
2568 ret->mode = s->mode;
2569 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2570 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2571 ret->msg_callback = s->msg_callback;
2572 ret->msg_callback_arg = s->msg_callback_arg;
2573 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2574 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2575 ret->generate_session_id = s->generate_session_id;
2577 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2579 ret->debug = s->debug;
2581 /* copy app data, a little dangerous perhaps */
2582 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2585 /* setup rbio, and wbio */
2586 if (s->rbio != NULL) {
2587 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2590 if (s->wbio != NULL) {
2591 if (s->wbio != s->rbio) {
2592 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2595 ret->wbio = ret->rbio;
2597 ret->rwstate = s->rwstate;
2598 ret->in_handshake = s->in_handshake;
2599 ret->handshake_func = s->handshake_func;
2600 ret->server = s->server;
2601 ret->renegotiate = s->renegotiate;
2602 ret->new_session = s->new_session;
2603 ret->quiet_shutdown = s->quiet_shutdown;
2604 ret->shutdown = s->shutdown;
2605 ret->state = s->state; /* SSL_dup does not really work at any state,
2607 RECORD_LAYER_dup(&ret->rlayer, &s->rlayer);
2608 ret->init_num = 0; /* would have to copy ret->init_buf,
2609 * ret->init_msg, ret->init_num,
2613 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2615 /* dup the cipher_list and cipher_list_by_id stacks */
2616 if (s->cipher_list != NULL) {
2617 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2620 if (s->cipher_list_by_id != NULL)
2621 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2625 /* Dup the client_CA list */
2626 if (s->client_CA != NULL) {
2627 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2629 ret->client_CA = sk;
2630 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2631 xn = sk_X509_NAME_value(sk, i);
2632 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2645 void ssl_clear_cipher_ctx(SSL *s)
2647 if (s->enc_read_ctx != NULL) {
2648 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2649 OPENSSL_free(s->enc_read_ctx);
2650 s->enc_read_ctx = NULL;
2652 if (s->enc_write_ctx != NULL) {
2653 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2654 OPENSSL_free(s->enc_write_ctx);
2655 s->enc_write_ctx = NULL;
2657 #ifndef OPENSSL_NO_COMP
2658 COMP_CTX_free(s->expand);
2660 COMP_CTX_free(s->compress);
2665 X509 *SSL_get_certificate(const SSL *s)
2667 if (s->cert != NULL)
2668 return (s->cert->key->x509);
2673 EVP_PKEY *SSL_get_privatekey(const SSL *s)
2675 if (s->cert != NULL)
2676 return (s->cert->key->privatekey);
2681 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2683 if (ctx->cert != NULL)
2684 return ctx->cert->key->x509;
2689 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2691 if (ctx->cert != NULL)
2692 return ctx->cert->key->privatekey;
2697 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2699 if ((s->session != NULL) && (s->session->cipher != NULL))
2700 return (s->session->cipher);
2704 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2706 #ifndef OPENSSL_NO_COMP
2707 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
2713 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2715 #ifndef OPENSSL_NO_COMP
2716 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
2722 int ssl_init_wbio_buffer(SSL *s, int push)
2726 if (s->bbio == NULL) {
2727 bbio = BIO_new(BIO_f_buffer());
2733 if (s->bbio == s->wbio)
2734 s->wbio = BIO_pop(s->wbio);
2736 (void)BIO_reset(bbio);
2737 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2738 if (!BIO_set_read_buffer_size(bbio, 1)) {
2739 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
2743 if (s->wbio != bbio)
2744 s->wbio = BIO_push(bbio, s->wbio);
2746 if (s->wbio == bbio)
2747 s->wbio = BIO_pop(bbio);
2752 void ssl_free_wbio_buffer(SSL *s)
2754 /* callers ensure s is never null */
2755 if (s->bbio == NULL)
2758 if (s->bbio == s->wbio) {
2759 /* remove buffering */
2760 s->wbio = BIO_pop(s->wbio);
2761 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
2762 * adding one more preprocessor symbol */
2763 assert(s->wbio != NULL);
2770 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
2772 ctx->quiet_shutdown = mode;
2775 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2777 return (ctx->quiet_shutdown);
2780 void SSL_set_quiet_shutdown(SSL *s, int mode)
2782 s->quiet_shutdown = mode;
2785 int SSL_get_quiet_shutdown(const SSL *s)
2787 return (s->quiet_shutdown);
2790 void SSL_set_shutdown(SSL *s, int mode)
2795 int SSL_get_shutdown(const SSL *s)
2797 return (s->shutdown);
2800 int SSL_version(const SSL *s)
2802 return (s->version);
2805 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2810 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
2813 if (ssl->ctx == ctx)
2816 ctx = ssl->initial_ctx;
2817 new_cert = ssl_cert_dup(ctx->cert);
2818 if (new_cert == NULL) {
2821 ssl_cert_free(ssl->cert);
2822 ssl->cert = new_cert;
2825 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
2826 * so setter APIs must prevent invalid lengths from entering the system.
2828 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
2831 * If the session ID context matches that of the parent SSL_CTX,
2832 * inherit it from the new SSL_CTX as well. If however the context does
2833 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
2834 * leave it unchanged.
2836 if ((ssl->ctx != NULL) &&
2837 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
2838 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
2839 ssl->sid_ctx_length = ctx->sid_ctx_length;
2840 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
2843 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
2844 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2850 #ifndef OPENSSL_NO_STDIO
2851 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2853 return (X509_STORE_set_default_paths(ctx->cert_store));
2856 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2859 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
2863 void SSL_set_info_callback(SSL *ssl,
2864 void (*cb) (const SSL *ssl, int type, int val))
2866 ssl->info_callback = cb;
2870 * One compiler (Diab DCC) doesn't like argument names in returned function
2873 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
2876 return ssl->info_callback;
2879 int SSL_state(const SSL *ssl)
2881 return (ssl->state);
2884 void SSL_set_state(SSL *ssl, int state)
2889 void SSL_set_verify_result(SSL *ssl, long arg)
2891 ssl->verify_result = arg;
2894 long SSL_get_verify_result(const SSL *ssl)
2896 return (ssl->verify_result);
2899 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
2902 return sizeof(ssl->s3->client_random);
2903 if (outlen > sizeof(ssl->s3->client_random))
2904 outlen = sizeof(ssl->s3->client_random);
2905 memcpy(out, ssl->s3->client_random, outlen);
2909 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
2912 return sizeof(ssl->s3->server_random);
2913 if (outlen > sizeof(ssl->s3->server_random))
2914 outlen = sizeof(ssl->s3->server_random);
2915 memcpy(out, ssl->s3->server_random, outlen);
2919 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
2920 unsigned char *out, size_t outlen)
2922 if (session->master_key_length < 0) {
2923 /* Should never happen */
2927 return session->master_key_length;
2928 if (outlen > (size_t)session->master_key_length)
2929 outlen = session->master_key_length;
2930 memcpy(out, session->master_key, outlen);
2934 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
2935 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
2937 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2938 new_func, dup_func, free_func);
2941 int SSL_set_ex_data(SSL *s, int idx, void *arg)
2943 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
2946 void *SSL_get_ex_data(const SSL *s, int idx)
2948 return (CRYPTO_get_ex_data(&s->ex_data, idx));
2951 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
2952 CRYPTO_EX_dup *dup_func,
2953 CRYPTO_EX_free *free_func)
2955 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2956 new_func, dup_func, free_func);
2959 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
2961 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
2964 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
2966 return (CRYPTO_get_ex_data(&s->ex_data, idx));
2974 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2976 return (ctx->cert_store);
2979 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
2981 X509_STORE_free(ctx->cert_store);
2982 ctx->cert_store = store;
2985 int SSL_want(const SSL *s)
2987 return (s->rwstate);
2991 * \brief Set the callback for generating temporary RSA keys.
2992 * \param ctx the SSL context.
2993 * \param cb the callback
2996 #ifndef OPENSSL_NO_RSA
2997 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3001 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3004 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3008 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3014 * \brief The RSA temporary key callback function.
3015 * \param ssl the SSL session.
3016 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3017 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3018 * of the required key in bits.
3019 * \return the temporary RSA key.
3020 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3023 RSA *cb(SSL *ssl, int is_export, int keylength)
3029 * \brief Set the callback for generating temporary DH keys.
3030 * \param ctx the SSL context.
3031 * \param dh the callback
3034 #ifndef OPENSSL_NO_DH
3035 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3036 DH *(*dh) (SSL *ssl, int is_export,
3039 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3042 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3045 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3049 #ifndef OPENSSL_NO_EC
3050 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3051 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3054 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3055 (void (*)(void))ecdh);
3058 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3059 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3062 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3066 #ifndef OPENSSL_NO_PSK
3067 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3069 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3070 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3071 SSL_R_DATA_LENGTH_TOO_LONG);
3074 OPENSSL_free(ctx->psk_identity_hint);
3075 if (identity_hint != NULL) {
3076 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3077 if (ctx->psk_identity_hint == NULL)
3080 ctx->psk_identity_hint = NULL;
3084 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3089 if (s->session == NULL)
3090 return 1; /* session not created yet, ignored */
3092 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3093 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3096 OPENSSL_free(s->session->psk_identity_hint);
3097 if (identity_hint != NULL) {
3098 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3099 if (s->session->psk_identity_hint == NULL)
3102 s->session->psk_identity_hint = NULL;
3106 const char *SSL_get_psk_identity_hint(const SSL *s)
3108 if (s == NULL || s->session == NULL)
3110 return (s->session->psk_identity_hint);
3113 const char *SSL_get_psk_identity(const SSL *s)
3115 if (s == NULL || s->session == NULL)
3117 return (s->session->psk_identity);
3120 void SSL_set_psk_client_callback(SSL *s,
3121 unsigned int (*cb) (SSL *ssl,
3130 s->psk_client_callback = cb;
3133 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3134 unsigned int (*cb) (SSL *ssl,
3143 ctx->psk_client_callback = cb;
3146 void SSL_set_psk_server_callback(SSL *s,
3147 unsigned int (*cb) (SSL *ssl,
3148 const char *identity,
3153 s->psk_server_callback = cb;
3156 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3157 unsigned int (*cb) (SSL *ssl,
3158 const char *identity,
3163 ctx->psk_server_callback = cb;
3167 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3168 void (*cb) (int write_p, int version,
3169 int content_type, const void *buf,
3170 size_t len, SSL *ssl, void *arg))
3172 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3175 void SSL_set_msg_callback(SSL *ssl,
3176 void (*cb) (int write_p, int version,
3177 int content_type, const void *buf,
3178 size_t len, SSL *ssl, void *arg))
3180 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3183 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3184 int (*cb) (SSL *ssl,
3188 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3189 (void (*)(void))cb);
3192 void SSL_set_not_resumable_session_callback(SSL *ssl,
3193 int (*cb) (SSL *ssl,
3194 int is_forward_secure))
3196 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3197 (void (*)(void))cb);
3201 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3202 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3203 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3207 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3209 ssl_clear_hash_ctx(hash);
3210 *hash = EVP_MD_CTX_create();
3212 EVP_DigestInit_ex(*hash, md, NULL);
3216 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3220 EVP_MD_CTX_destroy(*hash);
3224 /* Retrieve handshake hashes */
3225 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3227 unsigned char *p = out;
3232 EVP_MD_CTX_init(&ctx);
3233 for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
3234 if (mask & ssl_get_algorithm2(s)) {
3235 int hashsize = EVP_MD_size(md);
3236 EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
3237 if (!hdgst || hashsize < 0 || hashsize > outlen)
3239 if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
3241 if (!EVP_DigestFinal_ex(&ctx, p, NULL))
3249 EVP_MD_CTX_cleanup(&ctx);
3253 void SSL_set_debug(SSL *s, int debug)
3258 int SSL_cache_hit(SSL *s)
3263 int SSL_is_server(SSL *s)
3268 void SSL_set_security_level(SSL *s, int level)
3270 s->cert->sec_level = level;
3273 int SSL_get_security_level(const SSL *s)
3275 return s->cert->sec_level;
3278 void SSL_set_security_callback(SSL *s,
3279 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3280 int bits, int nid, void *other,
3283 s->cert->sec_cb = cb;
3286 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3288 void *other, void *ex) {
3289 return s->cert->sec_cb;
3292 void SSL_set0_security_ex_data(SSL *s, void *ex)
3294 s->cert->sec_ex = ex;
3297 void *SSL_get0_security_ex_data(const SSL *s)
3299 return s->cert->sec_ex;
3302 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3304 ctx->cert->sec_level = level;
3307 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3309 return ctx->cert->sec_level;
3312 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3313 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3314 int bits, int nid, void *other,
3317 ctx->cert->sec_cb = cb;
3320 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3326 return ctx->cert->sec_cb;
3329 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3331 ctx->cert->sec_ex = ex;
3334 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3336 return ctx->cert->sec_ex;
3339 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);