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 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
180 NULL, /* client_finished_label */
181 0, /* client_finished_label_len */
182 NULL, /* server_finished_label */
183 0, /* server_finished_label_len */
184 (int (*)(int))ssl_undefined_function,
185 (int (*)(SSL *, unsigned char *, size_t, const char *,
186 size_t, const unsigned char *, size_t,
187 int use_context))ssl_undefined_function,
190 struct ssl_async_args {
196 static void clear_ciphers(SSL *s)
198 /* clear the current cipher */
199 ssl_clear_cipher_ctx(s);
200 ssl_clear_hash_ctx(&s->read_hash);
201 ssl_clear_hash_ctx(&s->write_hash);
204 int SSL_clear(SSL *s)
206 if (s->method == NULL) {
207 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
211 if (ssl_clear_bad_session(s)) {
212 SSL_SESSION_free(s->session);
220 if (s->renegotiate) {
221 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
225 ossl_statem_clear(s);
227 s->version = s->method->version;
228 s->client_version = s->version;
229 s->rwstate = SSL_NOTHING;
231 BUF_MEM_free(s->init_buf);
237 * Check to see if we were changed into a different method, if so, revert
238 * back if we are not doing session-id reuse.
240 if (!ossl_statem_get_in_handshake(s) && (s->session == NULL)
241 && (s->method != s->ctx->method)) {
242 s->method->ssl_free(s);
243 s->method = s->ctx->method;
244 if (!s->method->ssl_new(s))
247 s->method->ssl_clear(s);
249 RECORD_LAYER_clear(&s->rlayer);
254 /** Used to change an SSL_CTXs default SSL method type */
255 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
257 STACK_OF(SSL_CIPHER) *sk;
261 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
262 &(ctx->cipher_list_by_id),
263 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
264 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
265 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
266 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
272 SSL *SSL_new(SSL_CTX *ctx)
277 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
280 if (ctx->method == NULL) {
281 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
285 s = OPENSSL_zalloc(sizeof(*s));
289 RECORD_LAYER_init(&s->rlayer, s);
291 s->options = ctx->options;
293 s->max_cert_list = ctx->max_cert_list;
297 * Earlier library versions used to copy the pointer to the CERT, not
298 * its contents; only when setting new parameters for the per-SSL
299 * copy, ssl_cert_new would be called (and the direct reference to
300 * the per-SSL_CTX settings would be lost, but those still were
301 * indirectly accessed for various purposes, and for that reason they
302 * used to be known as s->ctx->default_cert). Now we don't look at the
303 * SSL_CTX's CERT after having duplicated it once.
305 s->cert = ssl_cert_dup(ctx->cert);
309 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
310 s->msg_callback = ctx->msg_callback;
311 s->msg_callback_arg = ctx->msg_callback_arg;
312 s->verify_mode = ctx->verify_mode;
313 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
314 s->sid_ctx_length = ctx->sid_ctx_length;
315 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
316 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
317 s->verify_callback = ctx->default_verify_callback;
318 s->generate_session_id = ctx->generate_session_id;
320 s->param = X509_VERIFY_PARAM_new();
321 if (s->param == NULL)
323 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
324 s->quiet_shutdown = ctx->quiet_shutdown;
325 s->max_send_fragment = ctx->max_send_fragment;
327 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
329 s->tlsext_debug_cb = 0;
330 s->tlsext_debug_arg = NULL;
331 s->tlsext_ticket_expected = 0;
332 s->tlsext_status_type = -1;
333 s->tlsext_status_expected = 0;
334 s->tlsext_ocsp_ids = NULL;
335 s->tlsext_ocsp_exts = NULL;
336 s->tlsext_ocsp_resp = NULL;
337 s->tlsext_ocsp_resplen = -1;
338 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
339 s->initial_ctx = ctx;
340 # ifndef OPENSSL_NO_EC
341 if (ctx->tlsext_ecpointformatlist) {
342 s->tlsext_ecpointformatlist =
343 BUF_memdup(ctx->tlsext_ecpointformatlist,
344 ctx->tlsext_ecpointformatlist_length);
345 if (!s->tlsext_ecpointformatlist)
347 s->tlsext_ecpointformatlist_length =
348 ctx->tlsext_ecpointformatlist_length;
350 if (ctx->tlsext_ellipticcurvelist) {
351 s->tlsext_ellipticcurvelist =
352 BUF_memdup(ctx->tlsext_ellipticcurvelist,
353 ctx->tlsext_ellipticcurvelist_length);
354 if (!s->tlsext_ellipticcurvelist)
356 s->tlsext_ellipticcurvelist_length =
357 ctx->tlsext_ellipticcurvelist_length;
360 # ifndef OPENSSL_NO_NEXTPROTONEG
361 s->next_proto_negotiated = NULL;
364 if (s->ctx->alpn_client_proto_list) {
365 s->alpn_client_proto_list =
366 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
367 if (s->alpn_client_proto_list == NULL)
369 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
370 s->ctx->alpn_client_proto_list_len);
371 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
374 s->verify_result = X509_V_OK;
376 s->default_passwd_callback = ctx->default_passwd_callback;
377 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
379 s->method = ctx->method;
381 if (!s->method->ssl_new(s))
384 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
389 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
391 #ifndef OPENSSL_NO_PSK
392 s->psk_client_callback = ctx->psk_client_callback;
393 s->psk_server_callback = ctx->psk_server_callback;
401 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
405 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
406 unsigned int sid_ctx_len)
408 if (sid_ctx_len > sizeof ctx->sid_ctx) {
409 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
410 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
413 ctx->sid_ctx_length = sid_ctx_len;
414 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
419 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
420 unsigned int sid_ctx_len)
422 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
423 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
424 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
427 ssl->sid_ctx_length = sid_ctx_len;
428 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
433 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
435 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
436 ctx->generate_session_id = cb;
437 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
441 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
443 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
444 ssl->generate_session_id = cb;
445 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
449 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
453 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
454 * we can "construct" a session to give us the desired check - ie. to
455 * find if there's a session in the hash table that would conflict with
456 * any new session built out of this id/id_len and the ssl_version in use
461 if (id_len > sizeof r.session_id)
464 r.ssl_version = ssl->version;
465 r.session_id_length = id_len;
466 memcpy(r.session_id, id, id_len);
468 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
469 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
470 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
474 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
476 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
479 int SSL_set_purpose(SSL *s, int purpose)
481 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
484 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
486 return X509_VERIFY_PARAM_set_trust(s->param, trust);
489 int SSL_set_trust(SSL *s, int trust)
491 return X509_VERIFY_PARAM_set_trust(s->param, trust);
494 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
496 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
499 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
501 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
504 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
509 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
514 void SSL_certs_clear(SSL *s)
516 ssl_cert_clear_certs(s->cert);
519 void SSL_free(SSL *s)
526 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
534 fprintf(stderr, "SSL_free, bad reference count\n");
539 X509_VERIFY_PARAM_free(s->param);
540 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
542 if (s->bbio != NULL) {
543 /* If the buffering BIO is in place, pop it off */
544 if (s->bbio == s->wbio) {
545 s->wbio = BIO_pop(s->wbio);
550 BIO_free_all(s->rbio);
551 if (s->wbio != s->rbio)
552 BIO_free_all(s->wbio);
554 BUF_MEM_free(s->init_buf);
556 /* add extra stuff */
557 sk_SSL_CIPHER_free(s->cipher_list);
558 sk_SSL_CIPHER_free(s->cipher_list_by_id);
560 /* Make the next call work :-) */
561 if (s->session != NULL) {
562 ssl_clear_bad_session(s);
563 SSL_SESSION_free(s->session);
568 ssl_cert_free(s->cert);
569 /* Free up if allocated */
571 OPENSSL_free(s->tlsext_hostname);
572 SSL_CTX_free(s->initial_ctx);
573 #ifndef OPENSSL_NO_EC
574 OPENSSL_free(s->tlsext_ecpointformatlist);
575 OPENSSL_free(s->tlsext_ellipticcurvelist);
576 #endif /* OPENSSL_NO_EC */
577 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
578 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
579 OPENSSL_free(s->tlsext_ocsp_resp);
580 OPENSSL_free(s->alpn_client_proto_list);
582 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
584 if (s->method != NULL)
585 s->method->ssl_free(s);
587 RECORD_LAYER_release(&s->rlayer);
589 SSL_CTX_free(s->ctx);
591 #if !defined(OPENSSL_NO_NEXTPROTONEG)
592 OPENSSL_free(s->next_proto_negotiated);
595 #ifndef OPENSSL_NO_SRTP
596 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
602 void SSL_set_rbio(SSL *s, BIO *rbio)
605 BIO_free_all(s->rbio);
609 void SSL_set_wbio(SSL *s, BIO *wbio)
612 * If the output buffering BIO is still in place, remove it
614 if (s->bbio != NULL) {
615 if (s->wbio == s->bbio) {
616 s->wbio = s->wbio->next_bio;
617 s->bbio->next_bio = NULL;
620 if (s->wbio != wbio && s->rbio != s->wbio)
621 BIO_free_all(s->wbio);
625 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
627 SSL_set_wbio(s, wbio);
628 SSL_set_rbio(s, rbio);
631 BIO *SSL_get_rbio(const SSL *s)
636 BIO *SSL_get_wbio(const SSL *s)
641 int SSL_get_fd(const SSL *s)
643 return (SSL_get_rfd(s));
646 int SSL_get_rfd(const SSL *s)
652 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
658 int SSL_get_wfd(const SSL *s)
664 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
670 #ifndef OPENSSL_NO_SOCK
671 int SSL_set_fd(SSL *s, int fd)
676 bio = BIO_new(BIO_s_socket());
679 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
682 BIO_set_fd(bio, fd, BIO_NOCLOSE);
683 SSL_set_bio(s, bio, bio);
689 int SSL_set_wfd(SSL *s, int fd)
694 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
695 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
696 bio = BIO_new(BIO_s_socket());
699 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
702 BIO_set_fd(bio, fd, BIO_NOCLOSE);
703 SSL_set_bio(s, SSL_get_rbio(s), bio);
705 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
711 int SSL_set_rfd(SSL *s, int fd)
716 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
717 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
718 bio = BIO_new(BIO_s_socket());
721 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
724 BIO_set_fd(bio, fd, BIO_NOCLOSE);
725 SSL_set_bio(s, bio, SSL_get_wbio(s));
727 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
734 /* return length of latest Finished message we sent, copy to 'buf' */
735 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
740 ret = s->s3->tmp.finish_md_len;
743 memcpy(buf, s->s3->tmp.finish_md, count);
748 /* return length of latest Finished message we expected, copy to 'buf' */
749 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
754 ret = s->s3->tmp.peer_finish_md_len;
757 memcpy(buf, s->s3->tmp.peer_finish_md, count);
762 int SSL_get_verify_mode(const SSL *s)
764 return (s->verify_mode);
767 int SSL_get_verify_depth(const SSL *s)
769 return X509_VERIFY_PARAM_get_depth(s->param);
772 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
773 return (s->verify_callback);
776 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
778 return (ctx->verify_mode);
781 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
783 return X509_VERIFY_PARAM_get_depth(ctx->param);
786 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
787 return (ctx->default_verify_callback);
790 void SSL_set_verify(SSL *s, int mode,
791 int (*callback) (int ok, X509_STORE_CTX *ctx))
793 s->verify_mode = mode;
794 if (callback != NULL)
795 s->verify_callback = callback;
798 void SSL_set_verify_depth(SSL *s, int depth)
800 X509_VERIFY_PARAM_set_depth(s->param, depth);
803 void SSL_set_read_ahead(SSL *s, int yes)
805 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
808 int SSL_get_read_ahead(const SSL *s)
810 return RECORD_LAYER_get_read_ahead(&s->rlayer);
813 int SSL_pending(const SSL *s)
816 * SSL_pending cannot work properly if read-ahead is enabled
817 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
818 * impossible to fix since SSL_pending cannot report errors that may be
819 * observed while scanning the new data. (Note that SSL_pending() is
820 * often used as a boolean value, so we'd better not return -1.)
822 return (s->method->ssl_pending(s));
825 X509 *SSL_get_peer_certificate(const SSL *s)
829 if ((s == NULL) || (s->session == NULL))
832 r = s->session->peer;
842 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
846 if ((s == NULL) || (s->session == NULL))
849 r = s->session->peer_chain;
852 * If we are a client, cert_chain includes the peer's own certificate; if
853 * we are a server, it does not.
860 * Now in theory, since the calling process own 't' it should be safe to
861 * modify. We need to be able to read f without being hassled
863 int SSL_copy_session_id(SSL *t, const SSL *f)
865 /* Do we need to to SSL locking? */
866 if (!SSL_set_session(t, SSL_get_session(f))) {
871 * what if we are setup for one protocol version but want to talk another
873 if (t->method != f->method) {
874 t->method->ssl_free(t); /* cleanup current */
875 t->method = f->method; /* change method */
876 t->method->ssl_new(t); /* setup new */
879 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
880 ssl_cert_free(t->cert);
882 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
889 /* Fix this so it checks all the valid key/cert options */
890 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
893 (ctx->cert->key->x509 == NULL)) {
894 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
895 SSL_R_NO_CERTIFICATE_ASSIGNED);
898 if (ctx->cert->key->privatekey == NULL) {
899 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
900 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
903 return (X509_check_private_key
904 (ctx->cert->key->x509, ctx->cert->key->privatekey));
907 /* Fix this function so that it takes an optional type parameter */
908 int SSL_check_private_key(const SSL *ssl)
911 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
914 if (ssl->cert->key->x509 == NULL) {
915 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
918 if (ssl->cert->key->privatekey == NULL) {
919 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
922 return (X509_check_private_key(ssl->cert->key->x509,
923 ssl->cert->key->privatekey));
926 int SSL_waiting_for_async(SSL *s)
929 return ASYNC_job_is_waiting(s->job);
934 static int ssl_accept_intern(void *vargs)
936 struct ssl_async_args *args;
939 args = (struct ssl_async_args *)vargs;
942 return s->method->ssl_accept(s);
945 int SSL_accept(SSL *s)
948 struct ssl_async_args args;
950 if (s->handshake_func == 0)
951 /* Not properly initialized yet */
952 SSL_set_accept_state(s);
956 if((s->mode & SSL_MODE_ASYNC) && !ASYNC_in_job()) {
957 switch(ASYNC_start_job(&s->job, &ret, ssl_accept_intern, &args,
958 sizeof(struct ssl_async_args))) {
960 SSLerr(SSL_F_SSL_ACCEPT, SSL_R_FAILED_TO_INIT_ASYNC);
968 SSLerr(SSL_F_SSL_ACCEPT, ERR_R_INTERNAL_ERROR);
969 /* Shouldn't happen */
973 return s->method->ssl_accept(s);
977 int SSL_connect(SSL *s)
979 if (s->handshake_func == 0)
980 /* Not properly initialized yet */
981 SSL_set_connect_state(s);
983 return (s->method->ssl_connect(s));
986 long SSL_get_default_timeout(const SSL *s)
988 return (s->method->get_timeout());
992 static int ssl_read_intern(void *vargs)
994 struct ssl_async_args *args;
999 args = (struct ssl_async_args *)vargs;
1004 return s->method->ssl_read(s, buf, num);
1007 int SSL_read(SSL *s, void *buf, int num)
1010 struct ssl_async_args args;
1012 if (s->handshake_func == 0) {
1013 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1017 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1018 s->rwstate = SSL_NOTHING;
1026 if((s->mode & SSL_MODE_ASYNC) && !ASYNC_in_job()) {
1027 switch(ASYNC_start_job(&s->job, &ret, ssl_read_intern, &args,
1028 sizeof(struct ssl_async_args))) {
1030 s->rwstate = SSL_NOTHING;
1031 SSLerr(SSL_F_SSL_READ, SSL_R_FAILED_TO_INIT_ASYNC);
1034 s->rwstate = SSL_ASYNC_PAUSED;
1040 s->rwstate = SSL_NOTHING;
1041 SSLerr(SSL_F_SSL_READ, ERR_R_INTERNAL_ERROR);
1042 /* Shouldn't happen */
1046 return s->method->ssl_read(s, buf, num);
1050 int SSL_peek(SSL *s, void *buf, int num)
1052 if (s->handshake_func == 0) {
1053 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1057 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1060 return (s->method->ssl_peek(s, buf, num));
1063 static int ssl_write_intern(void *vargs)
1065 struct ssl_async_args *args;
1070 args = (struct ssl_async_args *)vargs;
1075 return s->method->ssl_write(s, buf, num);
1079 int SSL_write(SSL *s, const void *buf, int num)
1082 struct ssl_async_args args;
1084 if (s->handshake_func == 0) {
1085 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1089 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1090 s->rwstate = SSL_NOTHING;
1091 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1096 args.buf = (void *) buf;
1099 if((s->mode & SSL_MODE_ASYNC) && !ASYNC_in_job()) {
1100 switch(ASYNC_start_job(&s->job, &ret, ssl_write_intern, &args,
1101 sizeof(struct ssl_async_args))) {
1103 s->rwstate = SSL_NOTHING;
1104 SSLerr(SSL_F_SSL_WRITE, SSL_R_FAILED_TO_INIT_ASYNC);
1107 s->rwstate = SSL_ASYNC_PAUSED;
1113 s->rwstate = SSL_NOTHING;
1114 SSLerr(SSL_F_SSL_WRITE, ERR_R_INTERNAL_ERROR);
1115 /* Shouldn't happen */
1119 return s->method->ssl_write(s, buf, num);
1123 int SSL_shutdown(SSL *s)
1126 * Note that this function behaves differently from what one might
1127 * expect. Return values are 0 for no success (yet), 1 for success; but
1128 * calling it once is usually not enough, even if blocking I/O is used
1129 * (see ssl3_shutdown).
1132 if (s->handshake_func == 0) {
1133 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1137 if (!SSL_in_init(s))
1138 return (s->method->ssl_shutdown(s));
1143 int SSL_renegotiate(SSL *s)
1145 if (s->renegotiate == 0)
1150 return (s->method->ssl_renegotiate(s));
1153 int SSL_renegotiate_abbreviated(SSL *s)
1155 if (s->renegotiate == 0)
1160 return (s->method->ssl_renegotiate(s));
1163 int SSL_renegotiate_pending(SSL *s)
1166 * becomes true when negotiation is requested; false again once a
1167 * handshake has finished
1169 return (s->renegotiate != 0);
1172 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1177 case SSL_CTRL_GET_READ_AHEAD:
1178 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1179 case SSL_CTRL_SET_READ_AHEAD:
1180 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1181 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1184 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1185 s->msg_callback_arg = parg;
1188 case SSL_CTRL_OPTIONS:
1189 return (s->options |= larg);
1190 case SSL_CTRL_CLEAR_OPTIONS:
1191 return (s->options &= ~larg);
1193 return (s->mode |= larg);
1194 case SSL_CTRL_CLEAR_MODE:
1195 return (s->mode &= ~larg);
1196 case SSL_CTRL_GET_MAX_CERT_LIST:
1197 return (s->max_cert_list);
1198 case SSL_CTRL_SET_MAX_CERT_LIST:
1199 l = s->max_cert_list;
1200 s->max_cert_list = larg;
1202 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1203 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1205 s->max_send_fragment = larg;
1207 case SSL_CTRL_GET_RI_SUPPORT:
1209 return s->s3->send_connection_binding;
1212 case SSL_CTRL_CERT_FLAGS:
1213 return (s->cert->cert_flags |= larg);
1214 case SSL_CTRL_CLEAR_CERT_FLAGS:
1215 return (s->cert->cert_flags &= ~larg);
1217 case SSL_CTRL_GET_RAW_CIPHERLIST:
1219 if (s->s3->tmp.ciphers_raw == NULL)
1221 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
1222 return (int)s->s3->tmp.ciphers_rawlen;
1224 return TLS_CIPHER_LEN;
1226 case SSL_CTRL_GET_EXTMS_SUPPORT:
1227 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
1229 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1234 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1238 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1241 case SSL_CTRL_SET_MSG_CALLBACK:
1242 s->msg_callback = (void (*)
1243 (int write_p, int version, int content_type,
1244 const void *buf, size_t len, SSL *ssl,
1249 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1253 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1255 return ctx->sessions;
1258 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1261 /* For some cases with ctx == NULL perform syntax checks */
1264 #ifndef OPENSSL_NO_EC
1265 case SSL_CTRL_SET_CURVES_LIST:
1266 return tls1_set_curves_list(NULL, NULL, parg);
1268 case SSL_CTRL_SET_SIGALGS_LIST:
1269 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1270 return tls1_set_sigalgs_list(NULL, parg, 0);
1277 case SSL_CTRL_GET_READ_AHEAD:
1278 return (ctx->read_ahead);
1279 case SSL_CTRL_SET_READ_AHEAD:
1280 l = ctx->read_ahead;
1281 ctx->read_ahead = larg;
1284 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1285 ctx->msg_callback_arg = parg;
1288 case SSL_CTRL_GET_MAX_CERT_LIST:
1289 return (ctx->max_cert_list);
1290 case SSL_CTRL_SET_MAX_CERT_LIST:
1291 l = ctx->max_cert_list;
1292 ctx->max_cert_list = larg;
1295 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1296 l = ctx->session_cache_size;
1297 ctx->session_cache_size = larg;
1299 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1300 return (ctx->session_cache_size);
1301 case SSL_CTRL_SET_SESS_CACHE_MODE:
1302 l = ctx->session_cache_mode;
1303 ctx->session_cache_mode = larg;
1305 case SSL_CTRL_GET_SESS_CACHE_MODE:
1306 return (ctx->session_cache_mode);
1308 case SSL_CTRL_SESS_NUMBER:
1309 return (lh_SSL_SESSION_num_items(ctx->sessions));
1310 case SSL_CTRL_SESS_CONNECT:
1311 return (ctx->stats.sess_connect);
1312 case SSL_CTRL_SESS_CONNECT_GOOD:
1313 return (ctx->stats.sess_connect_good);
1314 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1315 return (ctx->stats.sess_connect_renegotiate);
1316 case SSL_CTRL_SESS_ACCEPT:
1317 return (ctx->stats.sess_accept);
1318 case SSL_CTRL_SESS_ACCEPT_GOOD:
1319 return (ctx->stats.sess_accept_good);
1320 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1321 return (ctx->stats.sess_accept_renegotiate);
1322 case SSL_CTRL_SESS_HIT:
1323 return (ctx->stats.sess_hit);
1324 case SSL_CTRL_SESS_CB_HIT:
1325 return (ctx->stats.sess_cb_hit);
1326 case SSL_CTRL_SESS_MISSES:
1327 return (ctx->stats.sess_miss);
1328 case SSL_CTRL_SESS_TIMEOUTS:
1329 return (ctx->stats.sess_timeout);
1330 case SSL_CTRL_SESS_CACHE_FULL:
1331 return (ctx->stats.sess_cache_full);
1332 case SSL_CTRL_OPTIONS:
1333 return (ctx->options |= larg);
1334 case SSL_CTRL_CLEAR_OPTIONS:
1335 return (ctx->options &= ~larg);
1337 return (ctx->mode |= larg);
1338 case SSL_CTRL_CLEAR_MODE:
1339 return (ctx->mode &= ~larg);
1340 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1341 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1343 ctx->max_send_fragment = larg;
1345 case SSL_CTRL_CERT_FLAGS:
1346 return (ctx->cert->cert_flags |= larg);
1347 case SSL_CTRL_CLEAR_CERT_FLAGS:
1348 return (ctx->cert->cert_flags &= ~larg);
1350 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1354 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1357 case SSL_CTRL_SET_MSG_CALLBACK:
1358 ctx->msg_callback = (void (*)
1359 (int write_p, int version, int content_type,
1360 const void *buf, size_t len, SSL *ssl,
1365 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1369 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1378 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1379 const SSL_CIPHER *const *bp)
1381 if ((*ap)->id > (*bp)->id)
1383 if ((*ap)->id < (*bp)->id)
1388 /** return a STACK of the ciphers available for the SSL and in order of
1390 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1393 if (s->cipher_list != NULL) {
1394 return (s->cipher_list);
1395 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1396 return (s->ctx->cipher_list);
1402 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
1404 if ((s == NULL) || (s->session == NULL) || !s->server)
1406 return s->session->ciphers;
1409 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1411 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1413 ciphers = SSL_get_ciphers(s);
1416 ssl_set_client_disabled(s);
1417 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1418 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1419 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1421 sk = sk_SSL_CIPHER_new_null();
1424 if (!sk_SSL_CIPHER_push(sk, c)) {
1425 sk_SSL_CIPHER_free(sk);
1433 /** return a STACK of the ciphers available for the SSL and in order of
1435 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1438 if (s->cipher_list_by_id != NULL) {
1439 return (s->cipher_list_by_id);
1440 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1441 return (s->ctx->cipher_list_by_id);
1447 /** The old interface to get the same thing as SSL_get_ciphers() */
1448 const char *SSL_get_cipher_list(const SSL *s, int n)
1451 STACK_OF(SSL_CIPHER) *sk;
1455 sk = SSL_get_ciphers(s);
1456 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1458 c = sk_SSL_CIPHER_value(sk, n);
1464 /** specify the ciphers to be used by default by the SSL_CTX */
1465 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1467 STACK_OF(SSL_CIPHER) *sk;
1469 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1470 &ctx->cipher_list_by_id, str, ctx->cert);
1472 * ssl_create_cipher_list may return an empty stack if it was unable to
1473 * find a cipher matching the given rule string (for example if the rule
1474 * string specifies a cipher which has been disabled). This is not an
1475 * error as far as ssl_create_cipher_list is concerned, and hence
1476 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1480 else if (sk_SSL_CIPHER_num(sk) == 0) {
1481 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1487 /** specify the ciphers to be used by the SSL */
1488 int SSL_set_cipher_list(SSL *s, const char *str)
1490 STACK_OF(SSL_CIPHER) *sk;
1492 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1493 &s->cipher_list_by_id, str, s->cert);
1494 /* see comment in SSL_CTX_set_cipher_list */
1497 else if (sk_SSL_CIPHER_num(sk) == 0) {
1498 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1504 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1507 STACK_OF(SSL_CIPHER) *sk;
1511 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1515 sk = s->session->ciphers;
1517 if (sk_SSL_CIPHER_num(sk) == 0)
1520 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1523 c = sk_SSL_CIPHER_value(sk, i);
1524 n = strlen(c->name);
1540 /** return a servername extension value if provided in Client Hello, or NULL.
1541 * So far, only host_name types are defined (RFC 3546).
1544 const char *SSL_get_servername(const SSL *s, const int type)
1546 if (type != TLSEXT_NAMETYPE_host_name)
1549 return s->session && !s->tlsext_hostname ?
1550 s->session->tlsext_hostname : s->tlsext_hostname;
1553 int SSL_get_servername_type(const SSL *s)
1556 && (!s->tlsext_hostname ? s->session->
1557 tlsext_hostname : s->tlsext_hostname))
1558 return TLSEXT_NAMETYPE_host_name;
1563 * SSL_select_next_proto implements the standard protocol selection. It is
1564 * expected that this function is called from the callback set by
1565 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1566 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1567 * not included in the length. A byte string of length 0 is invalid. No byte
1568 * string may be truncated. The current, but experimental algorithm for
1569 * selecting the protocol is: 1) If the server doesn't support NPN then this
1570 * is indicated to the callback. In this case, the client application has to
1571 * abort the connection or have a default application level protocol. 2) If
1572 * the server supports NPN, but advertises an empty list then the client
1573 * selects the first protcol in its list, but indicates via the API that this
1574 * fallback case was enacted. 3) Otherwise, the client finds the first
1575 * protocol in the server's list that it supports and selects this protocol.
1576 * This is because it's assumed that the server has better information about
1577 * which protocol a client should use. 4) If the client doesn't support any
1578 * of the server's advertised protocols, then this is treated the same as
1579 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1580 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1582 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1583 const unsigned char *server,
1584 unsigned int server_len,
1585 const unsigned char *client,
1586 unsigned int client_len)
1589 const unsigned char *result;
1590 int status = OPENSSL_NPN_UNSUPPORTED;
1593 * For each protocol in server preference order, see if we support it.
1595 for (i = 0; i < server_len;) {
1596 for (j = 0; j < client_len;) {
1597 if (server[i] == client[j] &&
1598 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1599 /* We found a match */
1600 result = &server[i];
1601 status = OPENSSL_NPN_NEGOTIATED;
1611 /* There's no overlap between our protocols and the server's list. */
1613 status = OPENSSL_NPN_NO_OVERLAP;
1616 *out = (unsigned char *)result + 1;
1617 *outlen = result[0];
1621 #ifndef OPENSSL_NO_NEXTPROTONEG
1623 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1624 * client's requested protocol for this connection and returns 0. If the
1625 * client didn't request any protocol, then *data is set to NULL. Note that
1626 * the client can request any protocol it chooses. The value returned from
1627 * this function need not be a member of the list of supported protocols
1628 * provided by the callback.
1630 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1633 *data = s->next_proto_negotiated;
1637 *len = s->next_proto_negotiated_len;
1642 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1643 * a TLS server needs a list of supported protocols for Next Protocol
1644 * Negotiation. The returned list must be in wire format. The list is
1645 * returned by setting |out| to point to it and |outlen| to its length. This
1646 * memory will not be modified, but one should assume that the SSL* keeps a
1647 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1648 * wishes to advertise. Otherwise, no such extension will be included in the
1651 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1652 int (*cb) (SSL *ssl,
1655 unsigned int *outlen,
1656 void *arg), void *arg)
1658 ctx->next_protos_advertised_cb = cb;
1659 ctx->next_protos_advertised_cb_arg = arg;
1663 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1664 * client needs to select a protocol from the server's provided list. |out|
1665 * must be set to point to the selected protocol (which may be within |in|).
1666 * The length of the protocol name must be written into |outlen|. The
1667 * server's advertised protocols are provided in |in| and |inlen|. The
1668 * callback can assume that |in| is syntactically valid. The client must
1669 * select a protocol. It is fatal to the connection if this callback returns
1670 * a value other than SSL_TLSEXT_ERR_OK.
1672 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1673 int (*cb) (SSL *s, unsigned char **out,
1674 unsigned char *outlen,
1675 const unsigned char *in,
1677 void *arg), void *arg)
1679 ctx->next_proto_select_cb = cb;
1680 ctx->next_proto_select_cb_arg = arg;
1685 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1686 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1687 * length-prefixed strings). Returns 0 on success.
1689 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1690 unsigned protos_len)
1692 OPENSSL_free(ctx->alpn_client_proto_list);
1693 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1694 if (ctx->alpn_client_proto_list == NULL)
1696 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1697 ctx->alpn_client_proto_list_len = protos_len;
1703 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1704 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1705 * length-prefixed strings). Returns 0 on success.
1707 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1708 unsigned protos_len)
1710 OPENSSL_free(ssl->alpn_client_proto_list);
1711 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1712 if (ssl->alpn_client_proto_list == NULL)
1714 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1715 ssl->alpn_client_proto_list_len = protos_len;
1721 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1722 * called during ClientHello processing in order to select an ALPN protocol
1723 * from the client's list of offered protocols.
1725 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1726 int (*cb) (SSL *ssl,
1727 const unsigned char **out,
1728 unsigned char *outlen,
1729 const unsigned char *in,
1731 void *arg), void *arg)
1733 ctx->alpn_select_cb = cb;
1734 ctx->alpn_select_cb_arg = arg;
1738 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1739 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1740 * (not including the leading length-prefix byte). If the server didn't
1741 * respond with a negotiated protocol then |*len| will be zero.
1743 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1748 *data = ssl->s3->alpn_selected;
1752 *len = ssl->s3->alpn_selected_len;
1756 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1757 const char *label, size_t llen,
1758 const unsigned char *p, size_t plen,
1761 if (s->version < TLS1_VERSION)
1764 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1769 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1774 ((unsigned int)a->session_id[0]) |
1775 ((unsigned int)a->session_id[1] << 8L) |
1776 ((unsigned long)a->session_id[2] << 16L) |
1777 ((unsigned long)a->session_id[3] << 24L);
1782 * NB: If this function (or indeed the hash function which uses a sort of
1783 * coarser function than this one) is changed, ensure
1784 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1785 * being able to construct an SSL_SESSION that will collide with any existing
1786 * session with a matching session ID.
1788 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1790 if (a->ssl_version != b->ssl_version)
1792 if (a->session_id_length != b->session_id_length)
1794 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1798 * These wrapper functions should remain rather than redeclaring
1799 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1800 * variable. The reason is that the functions aren't static, they're exposed
1803 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1804 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1806 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1808 SSL_CTX *ret = NULL;
1811 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1815 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1816 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1820 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1821 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1824 ret = OPENSSL_zalloc(sizeof(*ret));
1829 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1830 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1831 /* We take the system default. */
1832 ret->session_timeout = meth->get_timeout();
1833 ret->references = 1;
1834 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1835 ret->verify_mode = SSL_VERIFY_NONE;
1836 if ((ret->cert = ssl_cert_new()) == NULL)
1839 ret->sessions = lh_SSL_SESSION_new();
1840 if (ret->sessions == NULL)
1842 ret->cert_store = X509_STORE_new();
1843 if (ret->cert_store == NULL)
1846 if (!ssl_create_cipher_list(ret->method,
1847 &ret->cipher_list, &ret->cipher_list_by_id,
1848 SSL_DEFAULT_CIPHER_LIST, ret->cert)
1849 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1850 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1854 ret->param = X509_VERIFY_PARAM_new();
1855 if (ret->param == NULL)
1858 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1859 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1862 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1863 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1867 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1870 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1872 /* No compression for DTLS */
1873 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1874 ret->comp_methods = SSL_COMP_get_compression_methods();
1876 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1878 /* Setup RFC4507 ticket keys */
1879 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1880 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1881 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1882 ret->options |= SSL_OP_NO_TICKET;
1884 #ifndef OPENSSL_NO_SRP
1885 if (!SSL_CTX_SRP_CTX_init(ret))
1888 #ifndef OPENSSL_NO_ENGINE
1889 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1890 # define eng_strx(x) #x
1891 # define eng_str(x) eng_strx(x)
1892 /* Use specific client engine automatically... ignore errors */
1895 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1898 ENGINE_load_builtin_engines();
1899 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1901 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1907 * Default is to connect to non-RI servers. When RI is more widely
1908 * deployed might change this.
1910 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1914 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
1920 void SSL_CTX_free(SSL_CTX *a)
1927 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
1929 REF_PRINT("SSL_CTX", a);
1935 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
1940 X509_VERIFY_PARAM_free(a->param);
1943 * Free internal session cache. However: the remove_cb() may reference
1944 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1945 * after the sessions were flushed.
1946 * As the ex_data handling routines might also touch the session cache,
1947 * the most secure solution seems to be: empty (flush) the cache, then
1948 * free ex_data, then finally free the cache.
1949 * (See ticket [openssl.org #212].)
1951 if (a->sessions != NULL)
1952 SSL_CTX_flush_sessions(a, 0);
1954 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1955 lh_SSL_SESSION_free(a->sessions);
1956 X509_STORE_free(a->cert_store);
1957 sk_SSL_CIPHER_free(a->cipher_list);
1958 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1959 ssl_cert_free(a->cert);
1960 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
1961 sk_X509_pop_free(a->extra_certs, X509_free);
1962 a->comp_methods = NULL;
1963 #ifndef OPENSSL_NO_SRTP
1964 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
1966 #ifndef OPENSSL_NO_SRP
1967 SSL_CTX_SRP_CTX_free(a);
1969 #ifndef OPENSSL_NO_ENGINE
1970 if (a->client_cert_engine)
1971 ENGINE_finish(a->client_cert_engine);
1974 #ifndef OPENSSL_NO_EC
1975 OPENSSL_free(a->tlsext_ecpointformatlist);
1976 OPENSSL_free(a->tlsext_ellipticcurvelist);
1978 OPENSSL_free(a->alpn_client_proto_list);
1983 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1985 ctx->default_passwd_callback = cb;
1988 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
1990 ctx->default_passwd_callback_userdata = u;
1993 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
1995 s->default_passwd_callback = cb;
1998 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
2000 s->default_passwd_callback_userdata = u;
2003 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2004 int (*cb) (X509_STORE_CTX *, void *),
2007 ctx->app_verify_callback = cb;
2008 ctx->app_verify_arg = arg;
2011 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2012 int (*cb) (int, X509_STORE_CTX *))
2014 ctx->verify_mode = mode;
2015 ctx->default_verify_callback = cb;
2018 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2020 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2023 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2026 ssl_cert_set_cert_cb(c->cert, cb, arg);
2029 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2031 ssl_cert_set_cert_cb(s->cert, cb, arg);
2034 void ssl_set_masks(SSL *s, const SSL_CIPHER *cipher)
2038 uint32_t *pvalid = s->s3->tmp.valid_flags;
2039 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2040 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2041 int rsa_tmp_export, dh_tmp_export, kl;
2042 unsigned long mask_k, mask_a, emask_k, emask_a;
2043 #ifndef OPENSSL_NO_EC
2044 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2045 int have_ecdh_tmp, ecdh_ok;
2047 EVP_PKEY *ecc_pkey = NULL;
2048 int pk_nid = 0, md_nid = 0;
2053 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2055 #ifndef OPENSSL_NO_RSA
2056 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2057 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2058 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2060 rsa_tmp = rsa_tmp_export = 0;
2062 #ifndef OPENSSL_NO_DH
2063 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2064 dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2066 && DH_size(c->dh_tmp) * 8 <= kl));
2068 dh_tmp = dh_tmp_export = 0;
2071 #ifndef OPENSSL_NO_EC
2072 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2074 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2075 rsa_enc = pvalid[SSL_PKEY_RSA_ENC] & CERT_PKEY_VALID;
2076 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2077 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2078 rsa_sign = pvalid[SSL_PKEY_RSA_SIGN] & CERT_PKEY_SIGN;
2079 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2080 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_SIGN;
2081 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2082 dh_rsa = pvalid[SSL_PKEY_DH_RSA] & CERT_PKEY_VALID;
2083 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2084 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2085 dh_dsa = pvalid[SSL_PKEY_DH_DSA] & CERT_PKEY_VALID;
2086 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2087 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2088 #ifndef OPENSSL_NO_EC
2089 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
2098 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2099 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2100 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2103 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2104 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2105 mask_k |= SSL_kGOST;
2106 mask_a |= SSL_aGOST01;
2109 if (rsa_enc || (rsa_tmp && rsa_sign))
2111 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2112 emask_k |= SSL_kRSA;
2115 emask_k |= SSL_kDHE;
2123 emask_k |= SSL_kDHr;
2128 emask_k |= SSL_kDHd;
2130 if (mask_k & (SSL_kDHr | SSL_kDHd))
2133 if (rsa_enc || rsa_sign) {
2135 emask_a |= SSL_aRSA;
2140 emask_a |= SSL_aDSS;
2143 mask_a |= SSL_aNULL;
2144 emask_a |= SSL_aNULL;
2147 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2148 * depending on the key usage extension.
2150 #ifndef OPENSSL_NO_EC
2151 if (have_ecc_cert) {
2153 cpk = &c->pkeys[SSL_PKEY_ECC];
2155 ex_kusage = X509_get_key_usage(x);
2156 ecdh_ok = ex_kusage & X509v3_KU_KEY_AGREEMENT;
2157 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
2158 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
2160 ecc_pkey = X509_get_pubkey(x);
2161 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2162 EVP_PKEY_free(ecc_pkey);
2163 OBJ_find_sigid_algs(X509_get_signature_nid(x), &md_nid, &pk_nid);
2166 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2167 mask_k |= SSL_kECDHr;
2168 mask_a |= SSL_aECDH;
2169 if (ecc_pkey_size <= 163) {
2170 emask_k |= SSL_kECDHr;
2171 emask_a |= SSL_aECDH;
2175 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2176 mask_k |= SSL_kECDHe;
2177 mask_a |= SSL_aECDH;
2178 if (ecc_pkey_size <= 163) {
2179 emask_k |= SSL_kECDHe;
2180 emask_a |= SSL_aECDH;
2185 mask_a |= SSL_aECDSA;
2186 emask_a |= SSL_aECDSA;
2191 #ifndef OPENSSL_NO_EC
2192 if (have_ecdh_tmp) {
2193 mask_k |= SSL_kECDHE;
2194 emask_k |= SSL_kECDHE;
2198 #ifndef OPENSSL_NO_PSK
2201 emask_k |= SSL_kPSK;
2202 emask_a |= SSL_aPSK;
2203 if (mask_k & SSL_kRSA)
2204 mask_k |= SSL_kRSAPSK;
2205 if (mask_k & SSL_kDHE)
2206 mask_k |= SSL_kDHEPSK;
2207 if (mask_k & SSL_kECDHE)
2208 mask_k |= SSL_kECDHEPSK;
2211 s->s3->tmp.mask_k = mask_k;
2212 s->s3->tmp.mask_a = mask_a;
2213 s->s3->tmp.export_mask_k = emask_k;
2214 s->s3->tmp.export_mask_a = emask_a;
2217 #ifndef OPENSSL_NO_EC
2219 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2221 unsigned long alg_k, alg_a;
2222 EVP_PKEY *pkey = NULL;
2224 int md_nid = 0, pk_nid = 0;
2225 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2226 uint32_t ex_kusage = X509_get_key_usage(x);
2228 alg_k = cs->algorithm_mkey;
2229 alg_a = cs->algorithm_auth;
2231 if (SSL_C_IS_EXPORT(cs)) {
2232 /* ECDH key length in export ciphers must be <= 163 bits */
2233 pkey = X509_get_pubkey(x);
2236 keysize = EVP_PKEY_bits(pkey);
2237 EVP_PKEY_free(pkey);
2242 OBJ_find_sigid_algs(X509_get_signature_nid(x), &md_nid, &pk_nid);
2244 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2245 /* key usage, if present, must allow key agreement */
2246 if (!(ex_kusage & X509v3_KU_KEY_AGREEMENT)) {
2247 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2248 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2251 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2252 /* signature alg must be ECDSA */
2253 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2254 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2255 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2259 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2260 /* signature alg must be RSA */
2262 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2263 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2264 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2269 if (alg_a & SSL_aECDSA) {
2270 /* key usage, if present, must allow signing */
2271 if (!(ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) {
2272 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2273 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2278 return 1; /* all checks are ok */
2283 static int ssl_get_server_cert_index(const SSL *s)
2286 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2287 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2288 idx = SSL_PKEY_RSA_SIGN;
2290 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2294 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2300 if (!s->s3 || !s->s3->tmp.new_cipher)
2302 ssl_set_masks(s, s->s3->tmp.new_cipher);
2304 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2306 * Broken protocol test: return last used certificate: which may mismatch
2309 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2313 i = ssl_get_server_cert_index(s);
2315 /* This may or may not be an error. */
2320 return &c->pkeys[i];
2323 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2326 unsigned long alg_a;
2330 alg_a = cipher->algorithm_auth;
2333 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2335 * Broken protocol test: use last key: which may mismatch the one
2338 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2339 idx = c->key - c->pkeys;
2343 if ((alg_a & SSL_aDSS) &&
2344 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2345 idx = SSL_PKEY_DSA_SIGN;
2346 else if (alg_a & SSL_aRSA) {
2347 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2348 idx = SSL_PKEY_RSA_SIGN;
2349 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2350 idx = SSL_PKEY_RSA_ENC;
2351 } else if ((alg_a & SSL_aECDSA) &&
2352 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2355 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2359 *pmd = s->s3->tmp.md[idx];
2360 return c->pkeys[idx].privatekey;
2363 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2364 size_t *serverinfo_length)
2368 *serverinfo_length = 0;
2371 i = ssl_get_server_cert_index(s);
2375 if (c->pkeys[i].serverinfo == NULL)
2378 *serverinfo = c->pkeys[i].serverinfo;
2379 *serverinfo_length = c->pkeys[i].serverinfo_length;
2383 void ssl_update_cache(SSL *s, int mode)
2388 * If the session_id_length is 0, we are not supposed to cache it, and it
2389 * would be rather hard to do anyway :-)
2391 if (s->session->session_id_length == 0)
2394 i = s->session_ctx->session_cache_mode;
2395 if ((i & mode) && (!s->hit)
2396 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2397 || SSL_CTX_add_session(s->session_ctx, s->session))
2398 && (s->session_ctx->new_session_cb != NULL)) {
2399 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2400 if (!s->session_ctx->new_session_cb(s, s->session))
2401 SSL_SESSION_free(s->session);
2404 /* auto flush every 255 connections */
2405 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2406 if ((((mode & SSL_SESS_CACHE_CLIENT)
2407 ? s->session_ctx->stats.sess_connect_good
2408 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2409 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2414 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2419 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2424 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2429 if (s->method != meth) {
2430 if (s->handshake_func != NULL)
2431 conn = (s->handshake_func == s->method->ssl_connect);
2433 if (s->method->version == meth->version)
2436 s->method->ssl_free(s);
2438 ret = s->method->ssl_new(s);
2442 s->handshake_func = meth->ssl_connect;
2444 s->handshake_func = meth->ssl_accept;
2449 int SSL_get_error(const SSL *s, int i)
2456 return (SSL_ERROR_NONE);
2459 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2460 * where we do encode the error
2462 if ((l = ERR_peek_error()) != 0) {
2463 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2464 return (SSL_ERROR_SYSCALL);
2466 return (SSL_ERROR_SSL);
2469 if ((i < 0) && SSL_want_read(s)) {
2470 bio = SSL_get_rbio(s);
2471 if (BIO_should_read(bio))
2472 return (SSL_ERROR_WANT_READ);
2473 else if (BIO_should_write(bio))
2475 * This one doesn't make too much sense ... We never try to write
2476 * to the rbio, and an application program where rbio and wbio
2477 * are separate couldn't even know what it should wait for.
2478 * However if we ever set s->rwstate incorrectly (so that we have
2479 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2480 * wbio *are* the same, this test works around that bug; so it
2481 * might be safer to keep it.
2483 return (SSL_ERROR_WANT_WRITE);
2484 else if (BIO_should_io_special(bio)) {
2485 reason = BIO_get_retry_reason(bio);
2486 if (reason == BIO_RR_CONNECT)
2487 return (SSL_ERROR_WANT_CONNECT);
2488 else if (reason == BIO_RR_ACCEPT)
2489 return (SSL_ERROR_WANT_ACCEPT);
2491 return (SSL_ERROR_SYSCALL); /* unknown */
2495 if ((i < 0) && SSL_want_write(s)) {
2496 bio = SSL_get_wbio(s);
2497 if (BIO_should_write(bio))
2498 return (SSL_ERROR_WANT_WRITE);
2499 else if (BIO_should_read(bio))
2501 * See above (SSL_want_read(s) with BIO_should_write(bio))
2503 return (SSL_ERROR_WANT_READ);
2504 else if (BIO_should_io_special(bio)) {
2505 reason = BIO_get_retry_reason(bio);
2506 if (reason == BIO_RR_CONNECT)
2507 return (SSL_ERROR_WANT_CONNECT);
2508 else if (reason == BIO_RR_ACCEPT)
2509 return (SSL_ERROR_WANT_ACCEPT);
2511 return (SSL_ERROR_SYSCALL);
2514 if ((i < 0) && SSL_want_x509_lookup(s)) {
2515 return (SSL_ERROR_WANT_X509_LOOKUP);
2517 if ((i < 0) && SSL_want_async(s)) {
2518 return SSL_ERROR_WANT_ASYNC;
2522 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2523 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2524 return (SSL_ERROR_ZERO_RETURN);
2526 return (SSL_ERROR_SYSCALL);
2529 int SSL_do_handshake(SSL *s)
2533 if (s->handshake_func == NULL) {
2534 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2538 s->method->ssl_renegotiate_check(s);
2540 if (SSL_in_init(s) || SSL_in_before(s)) {
2541 ret = s->handshake_func(s);
2546 void SSL_set_accept_state(SSL *s)
2550 ossl_statem_clear(s);
2551 s->handshake_func = s->method->ssl_accept;
2555 void SSL_set_connect_state(SSL *s)
2559 ossl_statem_clear(s);
2560 s->handshake_func = s->method->ssl_connect;
2564 int ssl_undefined_function(SSL *s)
2566 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2570 int ssl_undefined_void_function(void)
2572 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2573 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2577 int ssl_undefined_const_function(const SSL *s)
2582 SSL_METHOD *ssl_bad_method(int ver)
2584 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2588 const char *SSL_get_version(const SSL *s)
2590 if (s->version == TLS1_2_VERSION)
2592 else if (s->version == TLS1_1_VERSION)
2594 else if (s->version == TLS1_VERSION)
2596 else if (s->version == SSL3_VERSION)
2598 else if (s->version == DTLS1_BAD_VER)
2599 return ("DTLSv0.9");
2600 else if (s->version == DTLS1_VERSION)
2602 else if (s->version == DTLS1_2_VERSION)
2603 return ("DTLSv1.2");
2608 SSL *SSL_dup(SSL *s)
2610 STACK_OF(X509_NAME) *sk;
2615 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2618 ret->version = s->version;
2619 ret->method = s->method;
2621 if (s->session != NULL) {
2622 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2623 if (!SSL_copy_session_id(ret, s))
2627 * No session has been established yet, so we have to expect that
2628 * s->cert or ret->cert will be changed later -- they should not both
2629 * point to the same object, and thus we can't use
2630 * SSL_copy_session_id.
2633 ret->method->ssl_free(ret);
2634 ret->method = s->method;
2635 ret->method->ssl_new(ret);
2637 if (s->cert != NULL) {
2638 ssl_cert_free(ret->cert);
2639 ret->cert = ssl_cert_dup(s->cert);
2640 if (ret->cert == NULL)
2644 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
2648 ret->options = s->options;
2649 ret->mode = s->mode;
2650 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2651 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2652 ret->msg_callback = s->msg_callback;
2653 ret->msg_callback_arg = s->msg_callback_arg;
2654 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2655 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2656 ret->generate_session_id = s->generate_session_id;
2658 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2660 ret->debug = s->debug;
2662 /* copy app data, a little dangerous perhaps */
2663 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2666 /* setup rbio, and wbio */
2667 if (s->rbio != NULL) {
2668 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2671 if (s->wbio != NULL) {
2672 if (s->wbio != s->rbio) {
2673 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2676 ret->wbio = ret->rbio;
2678 ret->rwstate = s->rwstate;
2679 ret->handshake_func = s->handshake_func;
2680 ret->server = s->server;
2681 ret->renegotiate = s->renegotiate;
2682 ret->new_session = s->new_session;
2683 ret->quiet_shutdown = s->quiet_shutdown;
2684 ret->shutdown = s->shutdown;
2685 ret->statem = s->statem; /* SSL_dup does not really work at any state,
2687 RECORD_LAYER_dup(&ret->rlayer, &s->rlayer);
2688 ret->init_num = 0; /* would have to copy ret->init_buf,
2689 * ret->init_msg, ret->init_num,
2693 ret->default_passwd_callback = s->default_passwd_callback;
2694 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
2696 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2698 /* dup the cipher_list and cipher_list_by_id stacks */
2699 if (s->cipher_list != NULL) {
2700 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2703 if (s->cipher_list_by_id != NULL)
2704 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2708 /* Dup the client_CA list */
2709 if (s->client_CA != NULL) {
2710 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2712 ret->client_CA = sk;
2713 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2714 xn = sk_X509_NAME_value(sk, i);
2715 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2728 void ssl_clear_cipher_ctx(SSL *s)
2730 if (s->enc_read_ctx != NULL) {
2731 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2732 OPENSSL_free(s->enc_read_ctx);
2733 s->enc_read_ctx = NULL;
2735 if (s->enc_write_ctx != NULL) {
2736 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2737 OPENSSL_free(s->enc_write_ctx);
2738 s->enc_write_ctx = NULL;
2740 #ifndef OPENSSL_NO_COMP
2741 COMP_CTX_free(s->expand);
2743 COMP_CTX_free(s->compress);
2748 X509 *SSL_get_certificate(const SSL *s)
2750 if (s->cert != NULL)
2751 return (s->cert->key->x509);
2756 EVP_PKEY *SSL_get_privatekey(const SSL *s)
2758 if (s->cert != NULL)
2759 return (s->cert->key->privatekey);
2764 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2766 if (ctx->cert != NULL)
2767 return ctx->cert->key->x509;
2772 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2774 if (ctx->cert != NULL)
2775 return ctx->cert->key->privatekey;
2780 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2782 if ((s->session != NULL) && (s->session->cipher != NULL))
2783 return (s->session->cipher);
2787 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2789 #ifndef OPENSSL_NO_COMP
2790 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
2796 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2798 #ifndef OPENSSL_NO_COMP
2799 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
2805 int ssl_init_wbio_buffer(SSL *s, int push)
2809 if (s->bbio == NULL) {
2810 bbio = BIO_new(BIO_f_buffer());
2816 if (s->bbio == s->wbio)
2817 s->wbio = BIO_pop(s->wbio);
2819 (void)BIO_reset(bbio);
2820 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2821 if (!BIO_set_read_buffer_size(bbio, 1)) {
2822 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
2826 if (s->wbio != bbio)
2827 s->wbio = BIO_push(bbio, s->wbio);
2829 if (s->wbio == bbio)
2830 s->wbio = BIO_pop(bbio);
2835 void ssl_free_wbio_buffer(SSL *s)
2837 /* callers ensure s is never null */
2838 if (s->bbio == NULL)
2841 if (s->bbio == s->wbio) {
2842 /* remove buffering */
2843 s->wbio = BIO_pop(s->wbio);
2844 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
2845 * adding one more preprocessor symbol */
2846 assert(s->wbio != NULL);
2853 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
2855 ctx->quiet_shutdown = mode;
2858 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2860 return (ctx->quiet_shutdown);
2863 void SSL_set_quiet_shutdown(SSL *s, int mode)
2865 s->quiet_shutdown = mode;
2868 int SSL_get_quiet_shutdown(const SSL *s)
2870 return (s->quiet_shutdown);
2873 void SSL_set_shutdown(SSL *s, int mode)
2878 int SSL_get_shutdown(const SSL *s)
2880 return (s->shutdown);
2883 int SSL_version(const SSL *s)
2885 return (s->version);
2888 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2893 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
2896 if (ssl->ctx == ctx)
2899 ctx = ssl->initial_ctx;
2900 new_cert = ssl_cert_dup(ctx->cert);
2901 if (new_cert == NULL) {
2904 ssl_cert_free(ssl->cert);
2905 ssl->cert = new_cert;
2908 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
2909 * so setter APIs must prevent invalid lengths from entering the system.
2911 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
2914 * If the session ID context matches that of the parent SSL_CTX,
2915 * inherit it from the new SSL_CTX as well. If however the context does
2916 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
2917 * leave it unchanged.
2919 if ((ssl->ctx != NULL) &&
2920 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
2921 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
2922 ssl->sid_ctx_length = ctx->sid_ctx_length;
2923 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
2926 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
2927 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2933 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2935 return (X509_STORE_set_default_paths(ctx->cert_store));
2938 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
2940 X509_LOOKUP *lookup;
2942 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
2945 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
2947 /* Clear any errors if the default directory does not exist */
2953 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
2955 X509_LOOKUP *lookup;
2957 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
2961 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
2963 /* Clear any errors if the default file does not exist */
2969 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2972 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
2975 void SSL_set_info_callback(SSL *ssl,
2976 void (*cb) (const SSL *ssl, int type, int val))
2978 ssl->info_callback = cb;
2982 * One compiler (Diab DCC) doesn't like argument names in returned function
2985 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
2988 return ssl->info_callback;
2991 void SSL_set_verify_result(SSL *ssl, long arg)
2993 ssl->verify_result = arg;
2996 long SSL_get_verify_result(const SSL *ssl)
2998 return (ssl->verify_result);
3001 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
3004 return sizeof(ssl->s3->client_random);
3005 if (outlen > sizeof(ssl->s3->client_random))
3006 outlen = sizeof(ssl->s3->client_random);
3007 memcpy(out, ssl->s3->client_random, outlen);
3011 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
3014 return sizeof(ssl->s3->server_random);
3015 if (outlen > sizeof(ssl->s3->server_random))
3016 outlen = sizeof(ssl->s3->server_random);
3017 memcpy(out, ssl->s3->server_random, outlen);
3021 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
3022 unsigned char *out, size_t outlen)
3024 if (session->master_key_length < 0) {
3025 /* Should never happen */
3029 return session->master_key_length;
3030 if (outlen > (size_t)session->master_key_length)
3031 outlen = session->master_key_length;
3032 memcpy(out, session->master_key, outlen);
3036 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3037 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3039 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3040 new_func, dup_func, free_func);
3043 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3045 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3048 void *SSL_get_ex_data(const SSL *s, int idx)
3050 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3053 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3054 CRYPTO_EX_dup *dup_func,
3055 CRYPTO_EX_free *free_func)
3057 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3058 new_func, dup_func, free_func);
3061 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3063 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3066 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3068 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3076 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3078 return (ctx->cert_store);
3081 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3083 X509_STORE_free(ctx->cert_store);
3084 ctx->cert_store = store;
3087 int SSL_want(const SSL *s)
3089 return (s->rwstate);
3093 * \brief Set the callback for generating temporary RSA keys.
3094 * \param ctx the SSL context.
3095 * \param cb the callback
3098 #ifndef OPENSSL_NO_RSA
3099 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3103 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3106 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3110 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3116 * \brief The RSA temporary key callback function.
3117 * \param ssl the SSL session.
3118 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3119 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3120 * of the required key in bits.
3121 * \return the temporary RSA key.
3122 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3125 RSA *cb(SSL *ssl, int is_export, int keylength)
3131 * \brief Set the callback for generating temporary DH keys.
3132 * \param ctx the SSL context.
3133 * \param dh the callback
3136 #ifndef OPENSSL_NO_DH
3137 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3138 DH *(*dh) (SSL *ssl, int is_export,
3141 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3144 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3147 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3151 #ifndef OPENSSL_NO_EC
3152 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3153 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3156 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3157 (void (*)(void))ecdh);
3160 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3161 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3164 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3168 #ifndef OPENSSL_NO_PSK
3169 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3171 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3172 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3173 SSL_R_DATA_LENGTH_TOO_LONG);
3176 OPENSSL_free(ctx->cert->psk_identity_hint);
3177 if (identity_hint != NULL) {
3178 ctx->cert->psk_identity_hint = BUF_strdup(identity_hint);
3179 if (ctx->cert->psk_identity_hint == NULL)
3182 ctx->cert->psk_identity_hint = NULL;
3186 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3191 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3192 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3195 OPENSSL_free(s->cert->psk_identity_hint);
3196 if (identity_hint != NULL) {
3197 s->cert->psk_identity_hint = BUF_strdup(identity_hint);
3198 if (s->cert->psk_identity_hint == NULL)
3201 s->cert->psk_identity_hint = NULL;
3205 const char *SSL_get_psk_identity_hint(const SSL *s)
3207 if (s == NULL || s->session == NULL)
3209 return (s->session->psk_identity_hint);
3212 const char *SSL_get_psk_identity(const SSL *s)
3214 if (s == NULL || s->session == NULL)
3216 return (s->session->psk_identity);
3219 void SSL_set_psk_client_callback(SSL *s,
3220 unsigned int (*cb) (SSL *ssl,
3229 s->psk_client_callback = cb;
3232 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3233 unsigned int (*cb) (SSL *ssl,
3242 ctx->psk_client_callback = cb;
3245 void SSL_set_psk_server_callback(SSL *s,
3246 unsigned int (*cb) (SSL *ssl,
3247 const char *identity,
3252 s->psk_server_callback = cb;
3255 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3256 unsigned int (*cb) (SSL *ssl,
3257 const char *identity,
3262 ctx->psk_server_callback = cb;
3266 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3267 void (*cb) (int write_p, int version,
3268 int content_type, const void *buf,
3269 size_t len, SSL *ssl, void *arg))
3271 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3274 void SSL_set_msg_callback(SSL *ssl,
3275 void (*cb) (int write_p, int version,
3276 int content_type, const void *buf,
3277 size_t len, SSL *ssl, void *arg))
3279 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3282 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3283 int (*cb) (SSL *ssl,
3287 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3288 (void (*)(void))cb);
3291 void SSL_set_not_resumable_session_callback(SSL *ssl,
3292 int (*cb) (SSL *ssl,
3293 int is_forward_secure))
3295 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3296 (void (*)(void))cb);
3300 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3301 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3302 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3306 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3308 ssl_clear_hash_ctx(hash);
3309 *hash = EVP_MD_CTX_create();
3310 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3311 EVP_MD_CTX_destroy(*hash);
3318 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3322 EVP_MD_CTX_destroy(*hash);
3326 /* Retrieve handshake hashes */
3327 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3329 unsigned char *p = out;
3334 EVP_MD_CTX_init(&ctx);
3335 for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
3336 if (mask & ssl_get_algorithm2(s)) {
3337 int hashsize = EVP_MD_size(md);
3338 EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
3339 if (!hdgst || hashsize < 0 || hashsize > outlen)
3341 if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
3343 if (!EVP_DigestFinal_ex(&ctx, p, NULL))
3351 EVP_MD_CTX_cleanup(&ctx);
3355 void SSL_set_debug(SSL *s, int debug)
3360 int SSL_cache_hit(SSL *s)
3365 int SSL_is_server(SSL *s)
3370 void SSL_set_security_level(SSL *s, int level)
3372 s->cert->sec_level = level;
3375 int SSL_get_security_level(const SSL *s)
3377 return s->cert->sec_level;
3380 void SSL_set_security_callback(SSL *s,
3381 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3382 int bits, int nid, void *other,
3385 s->cert->sec_cb = cb;
3388 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3390 void *other, void *ex) {
3391 return s->cert->sec_cb;
3394 void SSL_set0_security_ex_data(SSL *s, void *ex)
3396 s->cert->sec_ex = ex;
3399 void *SSL_get0_security_ex_data(const SSL *s)
3401 return s->cert->sec_ex;
3404 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3406 ctx->cert->sec_level = level;
3409 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3411 return ctx->cert->sec_level;
3414 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3415 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3416 int bits, int nid, void *other,
3419 ctx->cert->sec_cb = cb;
3422 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3428 return ctx->cert->sec_cb;
3431 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3433 ctx->cert->sec_ex = ex;
3436 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3438 return ctx->cert->sec_ex;
3441 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);