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>
161 #include <openssl/async.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 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 struct ssl_async_args {
195 int (*func1)(SSL *, void *, int);
196 int (*func2)(SSL *, const void *, int);
200 static void clear_ciphers(SSL *s)
202 /* clear the current cipher */
203 ssl_clear_cipher_ctx(s);
204 ssl_clear_hash_ctx(&s->read_hash);
205 ssl_clear_hash_ctx(&s->write_hash);
208 int SSL_clear(SSL *s)
210 if (s->method == NULL) {
211 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
215 if (ssl_clear_bad_session(s)) {
216 SSL_SESSION_free(s->session);
224 if (s->renegotiate) {
225 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
229 ossl_statem_clear(s);
231 s->version = s->method->version;
232 s->client_version = s->version;
233 s->rwstate = SSL_NOTHING;
235 BUF_MEM_free(s->init_buf);
241 * Check to see if we were changed into a different method, if so, revert
242 * back if we are not doing session-id reuse.
244 if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
245 && (s->method != s->ctx->method)) {
246 s->method->ssl_free(s);
247 s->method = s->ctx->method;
248 if (!s->method->ssl_new(s))
251 s->method->ssl_clear(s);
253 RECORD_LAYER_clear(&s->rlayer);
258 /** Used to change an SSL_CTXs default SSL method type */
259 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
261 STACK_OF(SSL_CIPHER) *sk;
265 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
266 &(ctx->cipher_list_by_id),
267 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
268 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
269 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
270 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
276 SSL *SSL_new(SSL_CTX *ctx)
281 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
284 if (ctx->method == NULL) {
285 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
289 s = OPENSSL_zalloc(sizeof(*s));
293 RECORD_LAYER_init(&s->rlayer, s);
295 s->options = ctx->options;
297 s->max_cert_list = ctx->max_cert_list;
301 * Earlier library versions used to copy the pointer to the CERT, not
302 * its contents; only when setting new parameters for the per-SSL
303 * copy, ssl_cert_new would be called (and the direct reference to
304 * the per-SSL_CTX settings would be lost, but those still were
305 * indirectly accessed for various purposes, and for that reason they
306 * used to be known as s->ctx->default_cert). Now we don't look at the
307 * SSL_CTX's CERT after having duplicated it once.
309 s->cert = ssl_cert_dup(ctx->cert);
313 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
314 s->msg_callback = ctx->msg_callback;
315 s->msg_callback_arg = ctx->msg_callback_arg;
316 s->verify_mode = ctx->verify_mode;
317 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
318 s->sid_ctx_length = ctx->sid_ctx_length;
319 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
320 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
321 s->verify_callback = ctx->default_verify_callback;
322 s->generate_session_id = ctx->generate_session_id;
324 s->param = X509_VERIFY_PARAM_new();
325 if (s->param == NULL)
327 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
328 s->quiet_shutdown = ctx->quiet_shutdown;
329 s->max_send_fragment = ctx->max_send_fragment;
331 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
333 s->tlsext_debug_cb = 0;
334 s->tlsext_debug_arg = NULL;
335 s->tlsext_ticket_expected = 0;
336 s->tlsext_status_type = -1;
337 s->tlsext_status_expected = 0;
338 s->tlsext_ocsp_ids = NULL;
339 s->tlsext_ocsp_exts = NULL;
340 s->tlsext_ocsp_resp = NULL;
341 s->tlsext_ocsp_resplen = -1;
342 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
343 s->initial_ctx = ctx;
344 # ifndef OPENSSL_NO_EC
345 if (ctx->tlsext_ecpointformatlist) {
346 s->tlsext_ecpointformatlist =
347 BUF_memdup(ctx->tlsext_ecpointformatlist,
348 ctx->tlsext_ecpointformatlist_length);
349 if (!s->tlsext_ecpointformatlist)
351 s->tlsext_ecpointformatlist_length =
352 ctx->tlsext_ecpointformatlist_length;
354 if (ctx->tlsext_ellipticcurvelist) {
355 s->tlsext_ellipticcurvelist =
356 BUF_memdup(ctx->tlsext_ellipticcurvelist,
357 ctx->tlsext_ellipticcurvelist_length);
358 if (!s->tlsext_ellipticcurvelist)
360 s->tlsext_ellipticcurvelist_length =
361 ctx->tlsext_ellipticcurvelist_length;
364 # ifndef OPENSSL_NO_NEXTPROTONEG
365 s->next_proto_negotiated = NULL;
368 if (s->ctx->alpn_client_proto_list) {
369 s->alpn_client_proto_list =
370 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
371 if (s->alpn_client_proto_list == NULL)
373 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
374 s->ctx->alpn_client_proto_list_len);
375 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
378 s->verify_result = X509_V_OK;
380 s->default_passwd_callback = ctx->default_passwd_callback;
381 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
383 s->method = ctx->method;
385 if (!s->method->ssl_new(s))
388 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
393 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
395 #ifndef OPENSSL_NO_PSK
396 s->psk_client_callback = ctx->psk_client_callback;
397 s->psk_server_callback = ctx->psk_server_callback;
405 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
409 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
410 unsigned int sid_ctx_len)
412 if (sid_ctx_len > sizeof ctx->sid_ctx) {
413 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
414 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
417 ctx->sid_ctx_length = sid_ctx_len;
418 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
423 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
424 unsigned int sid_ctx_len)
426 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
427 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
428 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
431 ssl->sid_ctx_length = sid_ctx_len;
432 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
437 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
439 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
440 ctx->generate_session_id = cb;
441 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
445 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
447 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
448 ssl->generate_session_id = cb;
449 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
453 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
457 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
458 * we can "construct" a session to give us the desired check - ie. to
459 * find if there's a session in the hash table that would conflict with
460 * any new session built out of this id/id_len and the ssl_version in use
465 if (id_len > sizeof r.session_id)
468 r.ssl_version = ssl->version;
469 r.session_id_length = id_len;
470 memcpy(r.session_id, id, id_len);
472 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
473 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
474 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
478 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
480 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
483 int SSL_set_purpose(SSL *s, int purpose)
485 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
488 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
490 return X509_VERIFY_PARAM_set_trust(s->param, trust);
493 int SSL_set_trust(SSL *s, int trust)
495 return X509_VERIFY_PARAM_set_trust(s->param, trust);
498 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
500 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
503 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
505 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
508 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
513 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
518 void SSL_certs_clear(SSL *s)
520 ssl_cert_clear_certs(s->cert);
523 void SSL_free(SSL *s)
530 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
538 fprintf(stderr, "SSL_free, bad reference count\n");
543 X509_VERIFY_PARAM_free(s->param);
544 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
546 if (s->bbio != NULL) {
547 /* If the buffering BIO is in place, pop it off */
548 if (s->bbio == s->wbio) {
549 s->wbio = BIO_pop(s->wbio);
554 BIO_free_all(s->rbio);
555 if (s->wbio != s->rbio)
556 BIO_free_all(s->wbio);
558 BUF_MEM_free(s->init_buf);
560 /* add extra stuff */
561 sk_SSL_CIPHER_free(s->cipher_list);
562 sk_SSL_CIPHER_free(s->cipher_list_by_id);
564 /* Make the next call work :-) */
565 if (s->session != NULL) {
566 ssl_clear_bad_session(s);
567 SSL_SESSION_free(s->session);
572 ssl_cert_free(s->cert);
573 /* Free up if allocated */
575 OPENSSL_free(s->tlsext_hostname);
576 SSL_CTX_free(s->initial_ctx);
577 #ifndef OPENSSL_NO_EC
578 OPENSSL_free(s->tlsext_ecpointformatlist);
579 OPENSSL_free(s->tlsext_ellipticcurvelist);
580 #endif /* OPENSSL_NO_EC */
581 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
582 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
583 OPENSSL_free(s->tlsext_ocsp_resp);
584 OPENSSL_free(s->alpn_client_proto_list);
586 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
588 if (s->method != NULL)
589 s->method->ssl_free(s);
591 RECORD_LAYER_release(&s->rlayer);
593 SSL_CTX_free(s->ctx);
595 #if !defined(OPENSSL_NO_NEXTPROTONEG)
596 OPENSSL_free(s->next_proto_negotiated);
599 #ifndef OPENSSL_NO_SRTP
600 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
606 void SSL_set_rbio(SSL *s, BIO *rbio)
609 BIO_free_all(s->rbio);
613 void SSL_set_wbio(SSL *s, BIO *wbio)
616 * If the output buffering BIO is still in place, remove it
618 if (s->bbio != NULL) {
619 if (s->wbio == s->bbio) {
620 s->wbio = s->wbio->next_bio;
621 s->bbio->next_bio = NULL;
624 if (s->wbio != wbio && s->rbio != s->wbio)
625 BIO_free_all(s->wbio);
629 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
631 SSL_set_wbio(s, wbio);
632 SSL_set_rbio(s, rbio);
635 BIO *SSL_get_rbio(const SSL *s)
640 BIO *SSL_get_wbio(const SSL *s)
645 int SSL_get_fd(const SSL *s)
647 return (SSL_get_rfd(s));
650 int SSL_get_rfd(const SSL *s)
656 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
662 int SSL_get_wfd(const SSL *s)
668 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
674 #ifndef OPENSSL_NO_SOCK
675 int SSL_set_fd(SSL *s, int fd)
680 bio = BIO_new(BIO_s_socket());
683 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
686 BIO_set_fd(bio, fd, BIO_NOCLOSE);
687 SSL_set_bio(s, bio, bio);
693 int SSL_set_wfd(SSL *s, int fd)
698 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
699 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
700 bio = BIO_new(BIO_s_socket());
703 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
706 BIO_set_fd(bio, fd, BIO_NOCLOSE);
707 SSL_set_bio(s, SSL_get_rbio(s), bio);
709 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
715 int SSL_set_rfd(SSL *s, int fd)
720 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
721 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
722 bio = BIO_new(BIO_s_socket());
725 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
728 BIO_set_fd(bio, fd, BIO_NOCLOSE);
729 SSL_set_bio(s, bio, SSL_get_wbio(s));
731 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
738 /* return length of latest Finished message we sent, copy to 'buf' */
739 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
744 ret = s->s3->tmp.finish_md_len;
747 memcpy(buf, s->s3->tmp.finish_md, count);
752 /* return length of latest Finished message we expected, copy to 'buf' */
753 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
758 ret = s->s3->tmp.peer_finish_md_len;
761 memcpy(buf, s->s3->tmp.peer_finish_md, count);
766 int SSL_get_verify_mode(const SSL *s)
768 return (s->verify_mode);
771 int SSL_get_verify_depth(const SSL *s)
773 return X509_VERIFY_PARAM_get_depth(s->param);
776 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
777 return (s->verify_callback);
780 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
782 return (ctx->verify_mode);
785 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
787 return X509_VERIFY_PARAM_get_depth(ctx->param);
790 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
791 return (ctx->default_verify_callback);
794 void SSL_set_verify(SSL *s, int mode,
795 int (*callback) (int ok, X509_STORE_CTX *ctx))
797 s->verify_mode = mode;
798 if (callback != NULL)
799 s->verify_callback = callback;
802 void SSL_set_verify_depth(SSL *s, int depth)
804 X509_VERIFY_PARAM_set_depth(s->param, depth);
807 void SSL_set_read_ahead(SSL *s, int yes)
809 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
812 int SSL_get_read_ahead(const SSL *s)
814 return RECORD_LAYER_get_read_ahead(&s->rlayer);
817 int SSL_pending(const SSL *s)
820 * SSL_pending cannot work properly if read-ahead is enabled
821 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
822 * impossible to fix since SSL_pending cannot report errors that may be
823 * observed while scanning the new data. (Note that SSL_pending() is
824 * often used as a boolean value, so we'd better not return -1.)
826 return (s->method->ssl_pending(s));
829 X509 *SSL_get_peer_certificate(const SSL *s)
833 if ((s == NULL) || (s->session == NULL))
836 r = s->session->peer;
846 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
850 if ((s == NULL) || (s->session == NULL))
853 r = s->session->peer_chain;
856 * If we are a client, cert_chain includes the peer's own certificate; if
857 * we are a server, it does not.
864 * Now in theory, since the calling process own 't' it should be safe to
865 * modify. We need to be able to read f without being hassled
867 int SSL_copy_session_id(SSL *t, const SSL *f)
869 /* Do we need to to SSL locking? */
870 if (!SSL_set_session(t, SSL_get_session(f))) {
875 * what if we are setup for one protocol version but want to talk another
877 if (t->method != f->method) {
878 t->method->ssl_free(t); /* cleanup current */
879 t->method = f->method; /* change method */
880 t->method->ssl_new(t); /* setup new */
883 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
884 ssl_cert_free(t->cert);
886 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
893 /* Fix this so it checks all the valid key/cert options */
894 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
897 (ctx->cert->key->x509 == NULL)) {
898 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
899 SSL_R_NO_CERTIFICATE_ASSIGNED);
902 if (ctx->cert->key->privatekey == NULL) {
903 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
904 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
907 return (X509_check_private_key
908 (ctx->cert->key->x509, ctx->cert->key->privatekey));
911 /* Fix this function so that it takes an optional type parameter */
912 int SSL_check_private_key(const SSL *ssl)
915 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
918 if (ssl->cert->key->x509 == NULL) {
919 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
922 if (ssl->cert->key->privatekey == NULL) {
923 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
926 return (X509_check_private_key(ssl->cert->key->x509,
927 ssl->cert->key->privatekey));
930 int SSL_waiting_for_async(SSL *s)
938 int SSL_get_async_wait_fd(SSL *s)
943 return ASYNC_get_wait_fd(s->job);
946 int SSL_accept(SSL *s)
948 if (s->handshake_func == 0) {
949 /* Not properly initialized yet */
950 SSL_set_accept_state(s);
953 return SSL_do_handshake(s);
956 int SSL_connect(SSL *s)
958 if (s->handshake_func == 0) {
959 /* Not properly initialized yet */
960 SSL_set_connect_state(s);
963 return SSL_do_handshake(s);
966 long SSL_get_default_timeout(const SSL *s)
968 return (s->method->get_timeout());
971 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
972 int (*func)(void *)) {
974 switch(ASYNC_start_job(&s->job, &ret, func, args,
975 sizeof(struct ssl_async_args))) {
977 s->rwstate = SSL_NOTHING;
978 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
981 s->rwstate = SSL_ASYNC_PAUSED;
987 s->rwstate = SSL_NOTHING;
988 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
989 /* Shouldn't happen */
994 static int ssl_io_intern(void *vargs)
996 struct ssl_async_args *args;
1001 args = (struct ssl_async_args *)vargs;
1005 if (args->type == 1)
1006 return args->f.func1(s, buf, num);
1008 return args->f.func2(s, buf, num);
1011 int SSL_read(SSL *s, void *buf, int num)
1013 if (s->handshake_func == 0) {
1014 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1018 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1019 s->rwstate = SSL_NOTHING;
1023 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1024 struct ssl_async_args args;
1030 args.f.func1 = s->method->ssl_read;
1032 return ssl_start_async_job(s, &args, ssl_io_intern);
1034 return s->method->ssl_read(s, buf, num);
1038 int SSL_peek(SSL *s, void *buf, int num)
1040 if (s->handshake_func == 0) {
1041 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1045 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1048 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1049 struct ssl_async_args args;
1055 args.f.func1 = s->method->ssl_peek;
1057 return ssl_start_async_job(s, &args, ssl_io_intern);
1059 return s->method->ssl_peek(s, buf, num);
1063 int SSL_write(SSL *s, const void *buf, int num)
1065 if (s->handshake_func == 0) {
1066 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1070 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1071 s->rwstate = SSL_NOTHING;
1072 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1076 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1077 struct ssl_async_args args;
1080 args.buf = (void *)buf;
1083 args.f.func2 = s->method->ssl_write;
1085 return ssl_start_async_job(s, &args, ssl_io_intern);
1087 return s->method->ssl_write(s, buf, num);
1091 int SSL_shutdown(SSL *s)
1094 * Note that this function behaves differently from what one might
1095 * expect. Return values are 0 for no success (yet), 1 for success; but
1096 * calling it once is usually not enough, even if blocking I/O is used
1097 * (see ssl3_shutdown).
1100 if (s->handshake_func == 0) {
1101 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1105 if (!SSL_in_init(s))
1106 return (s->method->ssl_shutdown(s));
1111 int SSL_renegotiate(SSL *s)
1113 if (s->renegotiate == 0)
1118 return (s->method->ssl_renegotiate(s));
1121 int SSL_renegotiate_abbreviated(SSL *s)
1123 if (s->renegotiate == 0)
1128 return (s->method->ssl_renegotiate(s));
1131 int SSL_renegotiate_pending(SSL *s)
1134 * becomes true when negotiation is requested; false again once a
1135 * handshake has finished
1137 return (s->renegotiate != 0);
1140 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1145 case SSL_CTRL_GET_READ_AHEAD:
1146 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1147 case SSL_CTRL_SET_READ_AHEAD:
1148 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1149 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1152 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1153 s->msg_callback_arg = parg;
1156 case SSL_CTRL_OPTIONS:
1157 return (s->options |= larg);
1158 case SSL_CTRL_CLEAR_OPTIONS:
1159 return (s->options &= ~larg);
1161 return (s->mode |= larg);
1162 case SSL_CTRL_CLEAR_MODE:
1163 return (s->mode &= ~larg);
1164 case SSL_CTRL_GET_MAX_CERT_LIST:
1165 return (s->max_cert_list);
1166 case SSL_CTRL_SET_MAX_CERT_LIST:
1167 l = s->max_cert_list;
1168 s->max_cert_list = larg;
1170 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1171 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1173 s->max_send_fragment = larg;
1175 case SSL_CTRL_GET_RI_SUPPORT:
1177 return s->s3->send_connection_binding;
1180 case SSL_CTRL_CERT_FLAGS:
1181 return (s->cert->cert_flags |= larg);
1182 case SSL_CTRL_CLEAR_CERT_FLAGS:
1183 return (s->cert->cert_flags &= ~larg);
1185 case SSL_CTRL_GET_RAW_CIPHERLIST:
1187 if (s->s3->tmp.ciphers_raw == NULL)
1189 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1190 return (int)s->s3->tmp.ciphers_rawlen;
1192 return TLS_CIPHER_LEN;
1194 case SSL_CTRL_GET_EXTMS_SUPPORT:
1195 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1197 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1202 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1206 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1209 case SSL_CTRL_SET_MSG_CALLBACK:
1210 s->msg_callback = (void (*)
1211 (int write_p, int version, int content_type,
1212 const void *buf, size_t len, SSL *ssl,
1217 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1221 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1223 return ctx->sessions;
1226 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1229 /* For some cases with ctx == NULL perform syntax checks */
1232 #ifndef OPENSSL_NO_EC
1233 case SSL_CTRL_SET_CURVES_LIST:
1234 return tls1_set_curves_list(NULL, NULL, parg);
1236 case SSL_CTRL_SET_SIGALGS_LIST:
1237 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1238 return tls1_set_sigalgs_list(NULL, parg, 0);
1245 case SSL_CTRL_GET_READ_AHEAD:
1246 return (ctx->read_ahead);
1247 case SSL_CTRL_SET_READ_AHEAD:
1248 l = ctx->read_ahead;
1249 ctx->read_ahead = larg;
1252 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1253 ctx->msg_callback_arg = parg;
1256 case SSL_CTRL_GET_MAX_CERT_LIST:
1257 return (ctx->max_cert_list);
1258 case SSL_CTRL_SET_MAX_CERT_LIST:
1259 l = ctx->max_cert_list;
1260 ctx->max_cert_list = larg;
1263 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1264 l = ctx->session_cache_size;
1265 ctx->session_cache_size = larg;
1267 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1268 return (ctx->session_cache_size);
1269 case SSL_CTRL_SET_SESS_CACHE_MODE:
1270 l = ctx->session_cache_mode;
1271 ctx->session_cache_mode = larg;
1273 case SSL_CTRL_GET_SESS_CACHE_MODE:
1274 return (ctx->session_cache_mode);
1276 case SSL_CTRL_SESS_NUMBER:
1277 return (lh_SSL_SESSION_num_items(ctx->sessions));
1278 case SSL_CTRL_SESS_CONNECT:
1279 return (ctx->stats.sess_connect);
1280 case SSL_CTRL_SESS_CONNECT_GOOD:
1281 return (ctx->stats.sess_connect_good);
1282 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1283 return (ctx->stats.sess_connect_renegotiate);
1284 case SSL_CTRL_SESS_ACCEPT:
1285 return (ctx->stats.sess_accept);
1286 case SSL_CTRL_SESS_ACCEPT_GOOD:
1287 return (ctx->stats.sess_accept_good);
1288 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1289 return (ctx->stats.sess_accept_renegotiate);
1290 case SSL_CTRL_SESS_HIT:
1291 return (ctx->stats.sess_hit);
1292 case SSL_CTRL_SESS_CB_HIT:
1293 return (ctx->stats.sess_cb_hit);
1294 case SSL_CTRL_SESS_MISSES:
1295 return (ctx->stats.sess_miss);
1296 case SSL_CTRL_SESS_TIMEOUTS:
1297 return (ctx->stats.sess_timeout);
1298 case SSL_CTRL_SESS_CACHE_FULL:
1299 return (ctx->stats.sess_cache_full);
1300 case SSL_CTRL_OPTIONS:
1301 return (ctx->options |= larg);
1302 case SSL_CTRL_CLEAR_OPTIONS:
1303 return (ctx->options &= ~larg);
1305 return (ctx->mode |= larg);
1306 case SSL_CTRL_CLEAR_MODE:
1307 return (ctx->mode &= ~larg);
1308 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1309 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1311 ctx->max_send_fragment = larg;
1313 case SSL_CTRL_CERT_FLAGS:
1314 return (ctx->cert->cert_flags |= larg);
1315 case SSL_CTRL_CLEAR_CERT_FLAGS:
1316 return (ctx->cert->cert_flags &= ~larg);
1318 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1322 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1325 case SSL_CTRL_SET_MSG_CALLBACK:
1326 ctx->msg_callback = (void (*)
1327 (int write_p, int version, int content_type,
1328 const void *buf, size_t len, SSL *ssl,
1333 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1337 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1346 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1347 const SSL_CIPHER *const *bp)
1349 if ((*ap)->id > (*bp)->id)
1351 if ((*ap)->id < (*bp)->id)
1356 /** return a STACK of the ciphers available for the SSL and in order of
1358 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1361 if (s->cipher_list != NULL) {
1362 return (s->cipher_list);
1363 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1364 return (s->ctx->cipher_list);
1370 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
1372 if ((s == NULL) || (s->session == NULL) || !s->server)
1374 return s->session->ciphers;
1377 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1379 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1381 ciphers = SSL_get_ciphers(s);
1384 ssl_set_client_disabled(s);
1385 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1386 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1387 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1389 sk = sk_SSL_CIPHER_new_null();
1392 if (!sk_SSL_CIPHER_push(sk, c)) {
1393 sk_SSL_CIPHER_free(sk);
1401 /** return a STACK of the ciphers available for the SSL and in order of
1403 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1406 if (s->cipher_list_by_id != NULL) {
1407 return (s->cipher_list_by_id);
1408 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1409 return (s->ctx->cipher_list_by_id);
1415 /** The old interface to get the same thing as SSL_get_ciphers() */
1416 const char *SSL_get_cipher_list(const SSL *s, int n)
1419 STACK_OF(SSL_CIPHER) *sk;
1423 sk = SSL_get_ciphers(s);
1424 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1426 c = sk_SSL_CIPHER_value(sk, n);
1432 /** specify the ciphers to be used by default by the SSL_CTX */
1433 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1435 STACK_OF(SSL_CIPHER) *sk;
1437 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1438 &ctx->cipher_list_by_id, str, ctx->cert);
1440 * ssl_create_cipher_list may return an empty stack if it was unable to
1441 * find a cipher matching the given rule string (for example if the rule
1442 * string specifies a cipher which has been disabled). This is not an
1443 * error as far as ssl_create_cipher_list is concerned, and hence
1444 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1448 else if (sk_SSL_CIPHER_num(sk) == 0) {
1449 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1455 /** specify the ciphers to be used by the SSL */
1456 int SSL_set_cipher_list(SSL *s, const char *str)
1458 STACK_OF(SSL_CIPHER) *sk;
1460 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1461 &s->cipher_list_by_id, str, s->cert);
1462 /* see comment in SSL_CTX_set_cipher_list */
1465 else if (sk_SSL_CIPHER_num(sk) == 0) {
1466 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1472 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1475 STACK_OF(SSL_CIPHER) *sk;
1479 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1483 sk = s->session->ciphers;
1485 if (sk_SSL_CIPHER_num(sk) == 0)
1488 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1491 c = sk_SSL_CIPHER_value(sk, i);
1492 n = strlen(c->name);
1508 /** return a servername extension value if provided in Client Hello, or NULL.
1509 * So far, only host_name types are defined (RFC 3546).
1512 const char *SSL_get_servername(const SSL *s, const int type)
1514 if (type != TLSEXT_NAMETYPE_host_name)
1517 return s->session && !s->tlsext_hostname ?
1518 s->session->tlsext_hostname : s->tlsext_hostname;
1521 int SSL_get_servername_type(const SSL *s)
1524 && (!s->tlsext_hostname ? s->session->
1525 tlsext_hostname : s->tlsext_hostname))
1526 return TLSEXT_NAMETYPE_host_name;
1531 * SSL_select_next_proto implements the standard protocol selection. It is
1532 * expected that this function is called from the callback set by
1533 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1534 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1535 * not included in the length. A byte string of length 0 is invalid. No byte
1536 * string may be truncated. The current, but experimental algorithm for
1537 * selecting the protocol is: 1) If the server doesn't support NPN then this
1538 * is indicated to the callback. In this case, the client application has to
1539 * abort the connection or have a default application level protocol. 2) If
1540 * the server supports NPN, but advertises an empty list then the client
1541 * selects the first protcol in its list, but indicates via the API that this
1542 * fallback case was enacted. 3) Otherwise, the client finds the first
1543 * protocol in the server's list that it supports and selects this protocol.
1544 * This is because it's assumed that the server has better information about
1545 * which protocol a client should use. 4) If the client doesn't support any
1546 * of the server's advertised protocols, then this is treated the same as
1547 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1548 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1550 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1551 const unsigned char *server,
1552 unsigned int server_len,
1553 const unsigned char *client,
1554 unsigned int client_len)
1557 const unsigned char *result;
1558 int status = OPENSSL_NPN_UNSUPPORTED;
1561 * For each protocol in server preference order, see if we support it.
1563 for (i = 0; i < server_len;) {
1564 for (j = 0; j < client_len;) {
1565 if (server[i] == client[j] &&
1566 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1567 /* We found a match */
1568 result = &server[i];
1569 status = OPENSSL_NPN_NEGOTIATED;
1579 /* There's no overlap between our protocols and the server's list. */
1581 status = OPENSSL_NPN_NO_OVERLAP;
1584 *out = (unsigned char *)result + 1;
1585 *outlen = result[0];
1589 #ifndef OPENSSL_NO_NEXTPROTONEG
1591 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1592 * client's requested protocol for this connection and returns 0. If the
1593 * client didn't request any protocol, then *data is set to NULL. Note that
1594 * the client can request any protocol it chooses. The value returned from
1595 * this function need not be a member of the list of supported protocols
1596 * provided by the callback.
1598 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1601 *data = s->next_proto_negotiated;
1605 *len = s->next_proto_negotiated_len;
1610 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1611 * a TLS server needs a list of supported protocols for Next Protocol
1612 * Negotiation. The returned list must be in wire format. The list is
1613 * returned by setting |out| to point to it and |outlen| to its length. This
1614 * memory will not be modified, but one should assume that the SSL* keeps a
1615 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1616 * wishes to advertise. Otherwise, no such extension will be included in the
1619 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1620 int (*cb) (SSL *ssl,
1623 unsigned int *outlen,
1624 void *arg), void *arg)
1626 ctx->next_protos_advertised_cb = cb;
1627 ctx->next_protos_advertised_cb_arg = arg;
1631 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1632 * client needs to select a protocol from the server's provided list. |out|
1633 * must be set to point to the selected protocol (which may be within |in|).
1634 * The length of the protocol name must be written into |outlen|. The
1635 * server's advertised protocols are provided in |in| and |inlen|. The
1636 * callback can assume that |in| is syntactically valid. The client must
1637 * select a protocol. It is fatal to the connection if this callback returns
1638 * a value other than SSL_TLSEXT_ERR_OK.
1640 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1641 int (*cb) (SSL *s, unsigned char **out,
1642 unsigned char *outlen,
1643 const unsigned char *in,
1645 void *arg), void *arg)
1647 ctx->next_proto_select_cb = cb;
1648 ctx->next_proto_select_cb_arg = arg;
1653 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1654 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1655 * length-prefixed strings). Returns 0 on success.
1657 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1658 unsigned protos_len)
1660 OPENSSL_free(ctx->alpn_client_proto_list);
1661 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1662 if (ctx->alpn_client_proto_list == NULL)
1664 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1665 ctx->alpn_client_proto_list_len = protos_len;
1671 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1672 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1673 * length-prefixed strings). Returns 0 on success.
1675 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1676 unsigned protos_len)
1678 OPENSSL_free(ssl->alpn_client_proto_list);
1679 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1680 if (ssl->alpn_client_proto_list == NULL)
1682 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1683 ssl->alpn_client_proto_list_len = protos_len;
1689 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1690 * called during ClientHello processing in order to select an ALPN protocol
1691 * from the client's list of offered protocols.
1693 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1694 int (*cb) (SSL *ssl,
1695 const unsigned char **out,
1696 unsigned char *outlen,
1697 const unsigned char *in,
1699 void *arg), void *arg)
1701 ctx->alpn_select_cb = cb;
1702 ctx->alpn_select_cb_arg = arg;
1706 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1707 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1708 * (not including the leading length-prefix byte). If the server didn't
1709 * respond with a negotiated protocol then |*len| will be zero.
1711 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1716 *data = ssl->s3->alpn_selected;
1720 *len = ssl->s3->alpn_selected_len;
1724 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1725 const char *label, size_t llen,
1726 const unsigned char *p, size_t plen,
1729 if (s->version < TLS1_VERSION)
1732 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1737 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1742 ((unsigned int)a->session_id[0]) |
1743 ((unsigned int)a->session_id[1] << 8L) |
1744 ((unsigned long)a->session_id[2] << 16L) |
1745 ((unsigned long)a->session_id[3] << 24L);
1750 * NB: If this function (or indeed the hash function which uses a sort of
1751 * coarser function than this one) is changed, ensure
1752 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1753 * being able to construct an SSL_SESSION that will collide with any existing
1754 * session with a matching session ID.
1756 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1758 if (a->ssl_version != b->ssl_version)
1760 if (a->session_id_length != b->session_id_length)
1762 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1766 * These wrapper functions should remain rather than redeclaring
1767 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1768 * variable. The reason is that the functions aren't static, they're exposed
1771 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1772 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1774 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1776 SSL_CTX *ret = NULL;
1779 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1783 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1784 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1788 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1789 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1792 ret = OPENSSL_zalloc(sizeof(*ret));
1797 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1798 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1799 /* We take the system default. */
1800 ret->session_timeout = meth->get_timeout();
1801 ret->references = 1;
1802 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1803 ret->verify_mode = SSL_VERIFY_NONE;
1804 if ((ret->cert = ssl_cert_new()) == NULL)
1807 ret->sessions = lh_SSL_SESSION_new();
1808 if (ret->sessions == NULL)
1810 ret->cert_store = X509_STORE_new();
1811 if (ret->cert_store == NULL)
1814 if (!ssl_create_cipher_list(ret->method,
1815 &ret->cipher_list, &ret->cipher_list_by_id,
1816 SSL_DEFAULT_CIPHER_LIST, ret->cert)
1817 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1818 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1822 ret->param = X509_VERIFY_PARAM_new();
1823 if (ret->param == NULL)
1826 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1827 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1830 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1831 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1835 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1838 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1840 /* No compression for DTLS */
1841 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1842 ret->comp_methods = SSL_COMP_get_compression_methods();
1844 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1846 /* Setup RFC4507 ticket keys */
1847 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1848 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1849 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1850 ret->options |= SSL_OP_NO_TICKET;
1852 #ifndef OPENSSL_NO_SRP
1853 if (!SSL_CTX_SRP_CTX_init(ret))
1856 #ifndef OPENSSL_NO_ENGINE
1857 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1858 # define eng_strx(x) #x
1859 # define eng_str(x) eng_strx(x)
1860 /* Use specific client engine automatically... ignore errors */
1863 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1866 ENGINE_load_builtin_engines();
1867 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1869 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1875 * Default is to connect to non-RI servers. When RI is more widely
1876 * deployed might change this.
1878 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1882 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
1888 void SSL_CTX_free(SSL_CTX *a)
1895 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
1897 REF_PRINT("SSL_CTX", a);
1903 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
1908 X509_VERIFY_PARAM_free(a->param);
1911 * Free internal session cache. However: the remove_cb() may reference
1912 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1913 * after the sessions were flushed.
1914 * As the ex_data handling routines might also touch the session cache,
1915 * the most secure solution seems to be: empty (flush) the cache, then
1916 * free ex_data, then finally free the cache.
1917 * (See ticket [openssl.org #212].)
1919 if (a->sessions != NULL)
1920 SSL_CTX_flush_sessions(a, 0);
1922 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1923 lh_SSL_SESSION_free(a->sessions);
1924 X509_STORE_free(a->cert_store);
1925 sk_SSL_CIPHER_free(a->cipher_list);
1926 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1927 ssl_cert_free(a->cert);
1928 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
1929 sk_X509_pop_free(a->extra_certs, X509_free);
1930 a->comp_methods = NULL;
1931 #ifndef OPENSSL_NO_SRTP
1932 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
1934 #ifndef OPENSSL_NO_SRP
1935 SSL_CTX_SRP_CTX_free(a);
1937 #ifndef OPENSSL_NO_ENGINE
1938 if (a->client_cert_engine)
1939 ENGINE_finish(a->client_cert_engine);
1942 #ifndef OPENSSL_NO_EC
1943 OPENSSL_free(a->tlsext_ecpointformatlist);
1944 OPENSSL_free(a->tlsext_ellipticcurvelist);
1946 OPENSSL_free(a->alpn_client_proto_list);
1951 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1953 ctx->default_passwd_callback = cb;
1956 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
1958 ctx->default_passwd_callback_userdata = u;
1961 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
1963 s->default_passwd_callback = cb;
1966 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
1968 s->default_passwd_callback_userdata = u;
1971 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
1972 int (*cb) (X509_STORE_CTX *, void *),
1975 ctx->app_verify_callback = cb;
1976 ctx->app_verify_arg = arg;
1979 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
1980 int (*cb) (int, X509_STORE_CTX *))
1982 ctx->verify_mode = mode;
1983 ctx->default_verify_callback = cb;
1986 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
1988 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1991 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
1994 ssl_cert_set_cert_cb(c->cert, cb, arg);
1997 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
1999 ssl_cert_set_cert_cb(s->cert, cb, arg);
2002 void ssl_set_masks(SSL *s, const SSL_CIPHER *cipher)
2006 uint32_t *pvalid = s->s3->tmp.valid_flags;
2007 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2008 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2009 int rsa_tmp_export, dh_tmp_export, kl;
2010 unsigned long mask_k, mask_a, emask_k, emask_a;
2011 #ifndef OPENSSL_NO_EC
2012 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2013 int have_ecdh_tmp, ecdh_ok;
2015 EVP_PKEY *ecc_pkey = NULL;
2016 int pk_nid = 0, md_nid = 0;
2021 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2023 #ifndef OPENSSL_NO_RSA
2024 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2025 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2026 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2028 rsa_tmp = rsa_tmp_export = 0;
2030 #ifndef OPENSSL_NO_DH
2031 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2032 dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2034 && DH_size(c->dh_tmp) * 8 <= kl));
2036 dh_tmp = dh_tmp_export = 0;
2039 #ifndef OPENSSL_NO_EC
2040 have_ecdh_tmp = c->ecdh_tmp_auto;
2042 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2043 rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
2044 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2045 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2046 rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
2047 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2048 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
2049 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2050 dh_rsa = pvalid[SSL_PKEY_DH_RSA] & CERT_PKEY_VALID;
2051 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2052 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2053 dh_dsa = pvalid[SSL_PKEY_DH_DSA] & CERT_PKEY_VALID;
2054 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2055 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2056 #ifndef OPENSSL_NO_EC
2057 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2066 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2067 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2068 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2071 #ifndef OPENSSL_NO_GOST
2072 cpk = &(c->pkeys[SSL_PKEY_GOST12_512]);
2073 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2074 mask_k |= SSL_kGOST;
2075 mask_a |= SSL_aGOST12;
2077 cpk = &(c->pkeys[SSL_PKEY_GOST12_256]);
2078 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2079 mask_k |= SSL_kGOST;
2080 mask_a |= SSL_aGOST12;
2082 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2083 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2084 mask_k |= SSL_kGOST;
2085 mask_a |= SSL_aGOST01;
2089 if (rsa_enc || (rsa_tmp && rsa_sign))
2091 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2092 emask_k |= SSL_kRSA;
2095 emask_k |= SSL_kDHE;
2103 emask_k |= SSL_kDHr;
2108 emask_k |= SSL_kDHd;
2110 if (mask_k & (SSL_kDHr | SSL_kDHd))
2113 if (rsa_enc || rsa_sign) {
2115 emask_a |= SSL_aRSA;
2120 emask_a |= SSL_aDSS;
2123 mask_a |= SSL_aNULL;
2124 emask_a |= SSL_aNULL;
2127 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2128 * depending on the key usage extension.
2130 #ifndef OPENSSL_NO_EC
2131 if (have_ecc_cert) {
2133 cpk = &c->pkeys[SSL_PKEY_ECC];
2135 ex_kusage = X509_get_key_usage(x);
2136 ecdh_ok = ex_kusage & X509v3_KU_KEY_AGREEMENT;
2137 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2138 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2140 ecc_pkey = X509_get_pubkey(x);
2141 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2142 EVP_PKEY_free(ecc_pkey);
2143 OBJ_find_sigid_algs(X509_get_signature_nid(x), &md_nid, &pk_nid);
2146 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2147 mask_k |= SSL_kECDHr;
2148 mask_a |= SSL_aECDH;
2149 if (ecc_pkey_size <= 163) {
2150 emask_k |= SSL_kECDHr;
2151 emask_a |= SSL_aECDH;
2155 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2156 mask_k |= SSL_kECDHe;
2157 mask_a |= SSL_aECDH;
2158 if (ecc_pkey_size <= 163) {
2159 emask_k |= SSL_kECDHe;
2160 emask_a |= SSL_aECDH;
2165 mask_a |= SSL_aECDSA;
2166 emask_a |= SSL_aECDSA;
2171 #ifndef OPENSSL_NO_EC
2172 if (have_ecdh_tmp) {
2173 mask_k |= SSL_kECDHE;
2174 emask_k |= SSL_kECDHE;
2178 #ifndef OPENSSL_NO_PSK
2181 emask_k |= SSL_kPSK;
2182 emask_a |= SSL_aPSK;
2183 if (mask_k & SSL_kRSA)
2184 mask_k |= SSL_kRSAPSK;
2185 if (mask_k & SSL_kDHE)
2186 mask_k |= SSL_kDHEPSK;
2187 if (mask_k & SSL_kECDHE)
2188 mask_k |= SSL_kECDHEPSK;
2191 s->s3->tmp.mask_k = mask_k;
2192 s->s3->tmp.mask_a = mask_a;
2193 s->s3->tmp.export_mask_k = emask_k;
2194 s->s3->tmp.export_mask_a = emask_a;
2197 #ifndef OPENSSL_NO_EC
2199 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2201 unsigned long alg_k, alg_a;
2202 EVP_PKEY *pkey = NULL;
2204 int md_nid = 0, pk_nid = 0;
2205 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2206 uint32_t ex_kusage = X509_get_key_usage(x);
2208 alg_k = cs->algorithm_mkey;
2209 alg_a = cs->algorithm_auth;
2211 if (SSL_C_IS_EXPORT(cs)) {
2212 /* ECDH key length in export ciphers must be <= 163 bits */
2213 pkey = X509_get_pubkey(x);
2216 keysize = EVP_PKEY_bits(pkey);
2217 EVP_PKEY_free(pkey);
2222 OBJ_find_sigid_algs(X509_get_signature_nid(x), &md_nid, &pk_nid);
2224 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2225 /* key usage, if present, must allow key agreement */
2226 if (!(ex_kusage & X509v3_KU_KEY_AGREEMENT)) {
2227 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2228 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2231 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2232 /* signature alg must be ECDSA */
2233 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2234 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2235 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2239 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2240 /* signature alg must be RSA */
2242 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2243 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2244 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2249 if (alg_a & SSL_aECDSA) {
2250 /* key usage, if present, must allow signing */
2251 if (!(ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) {
2252 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2253 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2258 return 1; /* all checks are ok */
2263 static int ssl_get_server_cert_index(const SSL *s)
2266 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2267 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2268 idx = SSL_PKEY_RSA_SIGN;
2269 if (idx == SSL_PKEY_GOST_EC) {
2270 if (s->cert->pkeys[SSL_PKEY_GOST12_512].x509)
2271 idx = SSL_PKEY_GOST12_512;
2272 else if (s->cert->pkeys[SSL_PKEY_GOST12_256].x509)
2273 idx = SSL_PKEY_GOST12_256;
2274 else if (s->cert->pkeys[SSL_PKEY_GOST01].x509)
2275 idx = SSL_PKEY_GOST01;
2280 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2284 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2290 if (!s->s3 || !s->s3->tmp.new_cipher)
2292 ssl_set_masks(s, s->s3->tmp.new_cipher);
2294 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2296 * Broken protocol test: return last used certificate: which may mismatch
2299 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2303 i = ssl_get_server_cert_index(s);
2305 /* This may or may not be an error. */
2310 return &c->pkeys[i];
2313 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2316 unsigned long alg_a;
2320 alg_a = cipher->algorithm_auth;
2323 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2325 * Broken protocol test: use last key: which may mismatch the one
2328 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2329 idx = c->key - c->pkeys;
2333 if ((alg_a & SSL_aDSS) &&
2334 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2335 idx = SSL_PKEY_DSA_SIGN;
2336 else if (alg_a & SSL_aRSA) {
2337 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2338 idx = SSL_PKEY_RSA_SIGN;
2339 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2340 idx = SSL_PKEY_RSA_ENC;
2341 } else if ((alg_a & SSL_aECDSA) &&
2342 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2345 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2349 *pmd = s->s3->tmp.md[idx];
2350 return c->pkeys[idx].privatekey;
2353 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2354 size_t *serverinfo_length)
2358 *serverinfo_length = 0;
2361 i = ssl_get_server_cert_index(s);
2365 if (c->pkeys[i].serverinfo == NULL)
2368 *serverinfo = c->pkeys[i].serverinfo;
2369 *serverinfo_length = c->pkeys[i].serverinfo_length;
2373 void ssl_update_cache(SSL *s, int mode)
2378 * If the session_id_length is 0, we are not supposed to cache it, and it
2379 * would be rather hard to do anyway :-)
2381 if (s->session->session_id_length == 0)
2384 i = s->session_ctx->session_cache_mode;
2385 if ((i & mode) && (!s->hit)
2386 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2387 || SSL_CTX_add_session(s->session_ctx, s->session))
2388 && (s->session_ctx->new_session_cb != NULL)) {
2389 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2390 if (!s->session_ctx->new_session_cb(s, s->session))
2391 SSL_SESSION_free(s->session);
2394 /* auto flush every 255 connections */
2395 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2396 if ((((mode & SSL_SESS_CACHE_CLIENT)
2397 ? s->session_ctx->stats.sess_connect_good
2398 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2399 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2404 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2409 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2414 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2419 if (s->method != meth) {
2420 if (s->handshake_func != NULL)
2421 conn = (s->handshake_func == s->method->ssl_connect);
2423 if (s->method->version == meth->version)
2426 s->method->ssl_free(s);
2428 ret = s->method->ssl_new(s);
2432 s->handshake_func = meth->ssl_connect;
2434 s->handshake_func = meth->ssl_accept;
2439 int SSL_get_error(const SSL *s, int i)
2446 return (SSL_ERROR_NONE);
2449 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2450 * where we do encode the error
2452 if ((l = ERR_peek_error()) != 0) {
2453 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2454 return (SSL_ERROR_SYSCALL);
2456 return (SSL_ERROR_SSL);
2459 if ((i < 0) && SSL_want_read(s)) {
2460 bio = SSL_get_rbio(s);
2461 if (BIO_should_read(bio))
2462 return (SSL_ERROR_WANT_READ);
2463 else if (BIO_should_write(bio))
2465 * This one doesn't make too much sense ... We never try to write
2466 * to the rbio, and an application program where rbio and wbio
2467 * are separate couldn't even know what it should wait for.
2468 * However if we ever set s->rwstate incorrectly (so that we have
2469 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2470 * wbio *are* the same, this test works around that bug; so it
2471 * might be safer to keep it.
2473 return (SSL_ERROR_WANT_WRITE);
2474 else if (BIO_should_io_special(bio)) {
2475 reason = BIO_get_retry_reason(bio);
2476 if (reason == BIO_RR_CONNECT)
2477 return (SSL_ERROR_WANT_CONNECT);
2478 else if (reason == BIO_RR_ACCEPT)
2479 return (SSL_ERROR_WANT_ACCEPT);
2481 return (SSL_ERROR_SYSCALL); /* unknown */
2485 if ((i < 0) && SSL_want_write(s)) {
2486 bio = SSL_get_wbio(s);
2487 if (BIO_should_write(bio))
2488 return (SSL_ERROR_WANT_WRITE);
2489 else if (BIO_should_read(bio))
2491 * See above (SSL_want_read(s) with BIO_should_write(bio))
2493 return (SSL_ERROR_WANT_READ);
2494 else if (BIO_should_io_special(bio)) {
2495 reason = BIO_get_retry_reason(bio);
2496 if (reason == BIO_RR_CONNECT)
2497 return (SSL_ERROR_WANT_CONNECT);
2498 else if (reason == BIO_RR_ACCEPT)
2499 return (SSL_ERROR_WANT_ACCEPT);
2501 return (SSL_ERROR_SYSCALL);
2504 if ((i < 0) && SSL_want_x509_lookup(s)) {
2505 return (SSL_ERROR_WANT_X509_LOOKUP);
2507 if ((i < 0) && SSL_want_async(s)) {
2508 return SSL_ERROR_WANT_ASYNC;
2512 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2513 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2514 return (SSL_ERROR_ZERO_RETURN);
2516 return (SSL_ERROR_SYSCALL);
2519 static int ssl_do_handshake_intern(void *vargs)
2521 struct ssl_async_args *args;
2524 args = (struct ssl_async_args *)vargs;
2527 return s->handshake_func(s);
2530 int SSL_do_handshake(SSL *s)
2534 if (s->handshake_func == NULL) {
2535 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2539 s->method->ssl_renegotiate_check(s);
2541 if (SSL_in_init(s) || SSL_in_before(s)) {
2542 if((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2543 struct ssl_async_args args;
2547 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
2549 ret = s->handshake_func(s);
2555 void SSL_set_accept_state(SSL *s)
2559 ossl_statem_clear(s);
2560 s->handshake_func = s->method->ssl_accept;
2564 void SSL_set_connect_state(SSL *s)
2568 ossl_statem_clear(s);
2569 s->handshake_func = s->method->ssl_connect;
2573 int ssl_undefined_function(SSL *s)
2575 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2579 int ssl_undefined_void_function(void)
2581 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2582 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2586 int ssl_undefined_const_function(const SSL *s)
2591 SSL_METHOD *ssl_bad_method(int ver)
2593 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2597 const char *SSL_get_version(const SSL *s)
2599 if (s->version == TLS1_2_VERSION)
2601 else if (s->version == TLS1_1_VERSION)
2603 else if (s->version == TLS1_VERSION)
2605 else if (s->version == SSL3_VERSION)
2607 else if (s->version == DTLS1_BAD_VER)
2608 return ("DTLSv0.9");
2609 else if (s->version == DTLS1_VERSION)
2611 else if (s->version == DTLS1_2_VERSION)
2612 return ("DTLSv1.2");
2617 SSL *SSL_dup(SSL *s)
2619 STACK_OF(X509_NAME) *sk;
2624 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2627 ret->version = s->version;
2628 ret->method = s->method;
2630 if (s->session != NULL) {
2631 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2632 if (!SSL_copy_session_id(ret, s))
2636 * No session has been established yet, so we have to expect that
2637 * s->cert or ret->cert will be changed later -- they should not both
2638 * point to the same object, and thus we can't use
2639 * SSL_copy_session_id.
2642 ret->method->ssl_free(ret);
2643 ret->method = s->method;
2644 ret->method->ssl_new(ret);
2646 if (s->cert != NULL) {
2647 ssl_cert_free(ret->cert);
2648 ret->cert = ssl_cert_dup(s->cert);
2649 if (ret->cert == NULL)
2653 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
2657 ret->options = s->options;
2658 ret->mode = s->mode;
2659 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2660 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2661 ret->msg_callback = s->msg_callback;
2662 ret->msg_callback_arg = s->msg_callback_arg;
2663 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2664 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2665 ret->generate_session_id = s->generate_session_id;
2667 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2669 ret->debug = s->debug;
2671 /* copy app data, a little dangerous perhaps */
2672 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2675 /* setup rbio, and wbio */
2676 if (s->rbio != NULL) {
2677 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2680 if (s->wbio != NULL) {
2681 if (s->wbio != s->rbio) {
2682 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2685 ret->wbio = ret->rbio;
2687 ret->rwstate = s->rwstate;
2688 ret->handshake_func = s->handshake_func;
2689 ret->server = s->server;
2690 ret->renegotiate = s->renegotiate;
2691 ret->new_session = s->new_session;
2692 ret->quiet_shutdown = s->quiet_shutdown;
2693 ret->shutdown = s->shutdown;
2694 ret->statem = s->statem; /* SSL_dup does not really work at any state,
2696 RECORD_LAYER_dup(&ret->rlayer, &s->rlayer);
2697 ret->init_num = 0; /* would have to copy ret->init_buf,
2698 * ret->init_msg, ret->init_num,
2702 ret->default_passwd_callback = s->default_passwd_callback;
2703 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
2705 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2707 /* dup the cipher_list and cipher_list_by_id stacks */
2708 if (s->cipher_list != NULL) {
2709 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2712 if (s->cipher_list_by_id != NULL)
2713 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2717 /* Dup the client_CA list */
2718 if (s->client_CA != NULL) {
2719 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2721 ret->client_CA = sk;
2722 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2723 xn = sk_X509_NAME_value(sk, i);
2724 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2737 void ssl_clear_cipher_ctx(SSL *s)
2739 if (s->enc_read_ctx != NULL) {
2740 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2741 OPENSSL_free(s->enc_read_ctx);
2742 s->enc_read_ctx = NULL;
2744 if (s->enc_write_ctx != NULL) {
2745 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2746 OPENSSL_free(s->enc_write_ctx);
2747 s->enc_write_ctx = NULL;
2749 #ifndef OPENSSL_NO_COMP
2750 COMP_CTX_free(s->expand);
2752 COMP_CTX_free(s->compress);
2757 X509 *SSL_get_certificate(const SSL *s)
2759 if (s->cert != NULL)
2760 return (s->cert->key->x509);
2765 EVP_PKEY *SSL_get_privatekey(const SSL *s)
2767 if (s->cert != NULL)
2768 return (s->cert->key->privatekey);
2773 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2775 if (ctx->cert != NULL)
2776 return ctx->cert->key->x509;
2781 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2783 if (ctx->cert != NULL)
2784 return ctx->cert->key->privatekey;
2789 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2791 if ((s->session != NULL) && (s->session->cipher != NULL))
2792 return (s->session->cipher);
2796 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2798 #ifndef OPENSSL_NO_COMP
2799 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
2805 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2807 #ifndef OPENSSL_NO_COMP
2808 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
2814 int ssl_init_wbio_buffer(SSL *s, int push)
2818 if (s->bbio == NULL) {
2819 bbio = BIO_new(BIO_f_buffer());
2825 if (s->bbio == s->wbio)
2826 s->wbio = BIO_pop(s->wbio);
2828 (void)BIO_reset(bbio);
2829 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2830 if (!BIO_set_read_buffer_size(bbio, 1)) {
2831 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
2835 if (s->wbio != bbio)
2836 s->wbio = BIO_push(bbio, s->wbio);
2838 if (s->wbio == bbio)
2839 s->wbio = BIO_pop(bbio);
2844 void ssl_free_wbio_buffer(SSL *s)
2846 /* callers ensure s is never null */
2847 if (s->bbio == NULL)
2850 if (s->bbio == s->wbio) {
2851 /* remove buffering */
2852 s->wbio = BIO_pop(s->wbio);
2853 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
2854 * adding one more preprocessor symbol */
2855 assert(s->wbio != NULL);
2862 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
2864 ctx->quiet_shutdown = mode;
2867 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2869 return (ctx->quiet_shutdown);
2872 void SSL_set_quiet_shutdown(SSL *s, int mode)
2874 s->quiet_shutdown = mode;
2877 int SSL_get_quiet_shutdown(const SSL *s)
2879 return (s->quiet_shutdown);
2882 void SSL_set_shutdown(SSL *s, int mode)
2887 int SSL_get_shutdown(const SSL *s)
2889 return (s->shutdown);
2892 int SSL_version(const SSL *s)
2894 return (s->version);
2897 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2902 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
2905 if (ssl->ctx == ctx)
2908 ctx = ssl->initial_ctx;
2909 new_cert = ssl_cert_dup(ctx->cert);
2910 if (new_cert == NULL) {
2913 ssl_cert_free(ssl->cert);
2914 ssl->cert = new_cert;
2917 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
2918 * so setter APIs must prevent invalid lengths from entering the system.
2920 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
2923 * If the session ID context matches that of the parent SSL_CTX,
2924 * inherit it from the new SSL_CTX as well. If however the context does
2925 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
2926 * leave it unchanged.
2928 if ((ssl->ctx != NULL) &&
2929 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
2930 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
2931 ssl->sid_ctx_length = ctx->sid_ctx_length;
2932 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
2935 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
2936 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2942 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2944 return (X509_STORE_set_default_paths(ctx->cert_store));
2947 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
2949 X509_LOOKUP *lookup;
2951 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
2954 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
2956 /* Clear any errors if the default directory does not exist */
2962 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
2964 X509_LOOKUP *lookup;
2966 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
2970 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
2972 /* Clear any errors if the default file does not exist */
2978 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2981 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
2984 void SSL_set_info_callback(SSL *ssl,
2985 void (*cb) (const SSL *ssl, int type, int val))
2987 ssl->info_callback = cb;
2991 * One compiler (Diab DCC) doesn't like argument names in returned function
2994 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
2997 return ssl->info_callback;
3000 void SSL_set_verify_result(SSL *ssl, long arg)
3002 ssl->verify_result = arg;
3005 long SSL_get_verify_result(const SSL *ssl)
3007 return (ssl->verify_result);
3010 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3013 return sizeof(ssl->s3->client_random);
3014 if (outlen > sizeof(ssl->s3->client_random))
3015 outlen = sizeof(ssl->s3->client_random);
3016 memcpy(out, ssl->s3->client_random, outlen);
3020 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3023 return sizeof(ssl->s3->server_random);
3024 if (outlen > sizeof(ssl->s3->server_random))
3025 outlen = sizeof(ssl->s3->server_random);
3026 memcpy(out, ssl->s3->server_random, outlen);
3030 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3031 unsigned char *out, size_t outlen)
3033 if (session->master_key_length < 0) {
3034 /* Should never happen */
3038 return session->master_key_length;
3039 if (outlen > (size_t)session->master_key_length)
3040 outlen = session->master_key_length;
3041 memcpy(out, session->master_key, outlen);
3045 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3047 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3050 void *SSL_get_ex_data(const SSL *s, int idx)
3052 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3055 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3057 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3060 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3062 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3070 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3072 return (ctx->cert_store);
3075 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3077 X509_STORE_free(ctx->cert_store);
3078 ctx->cert_store = store;
3081 int SSL_want(const SSL *s)
3083 return (s->rwstate);
3087 * \brief Set the callback for generating temporary RSA keys.
3088 * \param ctx the SSL context.
3089 * \param cb the callback
3092 #ifndef OPENSSL_NO_RSA
3093 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3097 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3100 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3104 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3110 * \brief The RSA temporary key callback function.
3111 * \param ssl the SSL session.
3112 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3113 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3114 * of the required key in bits.
3115 * \return the temporary RSA key.
3116 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3119 RSA *cb(SSL *ssl, int is_export, int keylength)
3125 * \brief Set the callback for generating temporary DH keys.
3126 * \param ctx the SSL context.
3127 * \param dh the callback
3130 #ifndef OPENSSL_NO_DH
3131 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3132 DH *(*dh) (SSL *ssl, int is_export,
3135 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3138 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3141 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3145 #ifndef OPENSSL_NO_PSK
3146 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3148 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3149 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3150 SSL_R_DATA_LENGTH_TOO_LONG);
3153 OPENSSL_free(ctx->cert->psk_identity_hint);
3154 if (identity_hint != NULL) {
3155 ctx->cert->psk_identity_hint = BUF_strdup(identity_hint);
3156 if (ctx->cert->psk_identity_hint == NULL)
3159 ctx->cert->psk_identity_hint = NULL;
3163 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3168 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3169 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3172 OPENSSL_free(s->cert->psk_identity_hint);
3173 if (identity_hint != NULL) {
3174 s->cert->psk_identity_hint = BUF_strdup(identity_hint);
3175 if (s->cert->psk_identity_hint == NULL)
3178 s->cert->psk_identity_hint = NULL;
3182 const char *SSL_get_psk_identity_hint(const SSL *s)
3184 if (s == NULL || s->session == NULL)
3186 return (s->session->psk_identity_hint);
3189 const char *SSL_get_psk_identity(const SSL *s)
3191 if (s == NULL || s->session == NULL)
3193 return (s->session->psk_identity);
3196 void SSL_set_psk_client_callback(SSL *s,
3197 unsigned int (*cb) (SSL *ssl,
3206 s->psk_client_callback = cb;
3209 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3210 unsigned int (*cb) (SSL *ssl,
3219 ctx->psk_client_callback = cb;
3222 void SSL_set_psk_server_callback(SSL *s,
3223 unsigned int (*cb) (SSL *ssl,
3224 const char *identity,
3229 s->psk_server_callback = cb;
3232 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3233 unsigned int (*cb) (SSL *ssl,
3234 const char *identity,
3239 ctx->psk_server_callback = cb;
3243 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3244 void (*cb) (int write_p, int version,
3245 int content_type, const void *buf,
3246 size_t len, SSL *ssl, void *arg))
3248 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3251 void SSL_set_msg_callback(SSL *ssl,
3252 void (*cb) (int write_p, int version,
3253 int content_type, const void *buf,
3254 size_t len, SSL *ssl, void *arg))
3256 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3259 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3260 int (*cb) (SSL *ssl,
3264 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3265 (void (*)(void))cb);
3268 void SSL_set_not_resumable_session_callback(SSL *ssl,
3269 int (*cb) (SSL *ssl,
3270 int is_forward_secure))
3272 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3273 (void (*)(void))cb);
3277 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3278 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3279 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3283 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3285 ssl_clear_hash_ctx(hash);
3286 *hash = EVP_MD_CTX_create();
3287 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3288 EVP_MD_CTX_destroy(*hash);
3295 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3299 EVP_MD_CTX_destroy(*hash);
3303 /* Retrieve handshake hashes */
3304 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3307 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
3308 int ret = EVP_MD_CTX_size(hdgst);
3309 EVP_MD_CTX_init(&ctx);
3310 if (ret < 0 || ret > outlen) {
3314 if (!EVP_MD_CTX_copy_ex(&ctx, hdgst)
3315 || EVP_DigestFinal_ex(&ctx, out, NULL) <= 0)
3318 EVP_MD_CTX_cleanup(&ctx);
3322 void SSL_set_debug(SSL *s, int debug)
3327 int SSL_cache_hit(SSL *s)
3332 int SSL_is_server(SSL *s)
3337 void SSL_set_security_level(SSL *s, int level)
3339 s->cert->sec_level = level;
3342 int SSL_get_security_level(const SSL *s)
3344 return s->cert->sec_level;
3347 void SSL_set_security_callback(SSL *s,
3348 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3349 int bits, int nid, void *other,
3352 s->cert->sec_cb = cb;
3355 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3357 void *other, void *ex) {
3358 return s->cert->sec_cb;
3361 void SSL_set0_security_ex_data(SSL *s, void *ex)
3363 s->cert->sec_ex = ex;
3366 void *SSL_get0_security_ex_data(const SSL *s)
3368 return s->cert->sec_ex;
3371 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3373 ctx->cert->sec_level = level;
3376 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3378 return ctx->cert->sec_level;
3381 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3382 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3383 int bits, int nid, void *other,
3386 ctx->cert->sec_cb = cb;
3389 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3395 return ctx->cert->sec_cb;
3398 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3400 ctx->cert->sec_ex = ex;
3403 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3405 return ctx->cert->sec_ex;
3408 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);