2 * ! \file ssl/ssl_lib.c \brief Version independent SSL functions.
4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
7 * This package is an SSL implementation written
8 * by Eric Young (eay@cryptsoft.com).
9 * The implementation was written so as to conform with Netscapes SSL.
11 * This library is free for commercial and non-commercial use as long as
12 * the following conditions are aheared to. The following conditions
13 * apply to all code found in this distribution, be it the RC4, RSA,
14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
15 * included with this distribution is covered by the same copyright terms
16 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
18 * Copyright remains Eric Young's, and as such any Copyright notices in
19 * the code are not to be removed.
20 * If this package is used in a product, Eric Young should be given attribution
21 * as the author of the parts of the library used.
22 * This can be in the form of a textual message at program startup or
23 * in documentation (online or textual) provided with the package.
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
28 * 1. Redistributions of source code must retain the copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. All advertising materials mentioning features or use of this software
34 * must display the following acknowledgement:
35 * "This product includes cryptographic software written by
36 * Eric Young (eay@cryptsoft.com)"
37 * The word 'cryptographic' can be left out if the rouines from the library
38 * being used are not cryptographic related :-).
39 * 4. If you include any Windows specific code (or a derivative thereof) from
40 * the apps directory (application code) you must include an acknowledgement:
41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * The licence and distribution terms for any publically available version or
56 * derivative of this code cannot be changed. i.e. this code cannot simply be
57 * copied and put under another distribution licence
58 * [including the GNU Public Licence.]
60 /* ====================================================================
61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
67 * 1. Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in
72 * the documentation and/or other materials provided with the
75 * 3. All advertising materials mentioning features or use of this
76 * software must display the following acknowledgment:
77 * "This product includes software developed by the OpenSSL Project
78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
81 * endorse or promote products derived from this software without
82 * prior written permission. For written permission, please contact
83 * openssl-core@openssl.org.
85 * 5. Products derived from this software may not be called "OpenSSL"
86 * nor may "OpenSSL" appear in their names without prior written
87 * permission of the OpenSSL Project.
89 * 6. Redistributions of any form whatsoever must retain the following
91 * "This product includes software developed by the OpenSSL Project
92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
105 * OF THE POSSIBILITY OF SUCH DAMAGE.
106 * ====================================================================
108 * This product includes cryptographic software written by Eric Young
109 * (eay@cryptsoft.com). This product includes software written by Tim
110 * Hudson (tjh@cryptsoft.com).
113 /* ====================================================================
114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
115 * ECC cipher suite support in OpenSSL originally developed by
116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
118 /* ====================================================================
119 * Copyright 2005 Nokia. All rights reserved.
121 * The portions of the attached software ("Contribution") is developed by
122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
127 * support (see RFC 4279) to OpenSSL.
129 * No patent licenses or other rights except those expressly stated in
130 * the OpenSSL open source license shall be deemed granted or received
131 * expressly, by implication, estoppel, or otherwise.
133 * No assurances are provided by Nokia that the Contribution does not
134 * infringe the patent or other intellectual property rights of any third
135 * party or that the license provides you with all the necessary rights
136 * to make use of the Contribution.
138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
149 #include "ssl_locl.h"
150 #include "kssl_lcl.h"
151 #include <openssl/objects.h>
152 #include <openssl/lhash.h>
153 #include <openssl/x509v3.h>
154 #include <openssl/rand.h>
155 #include <openssl/ocsp.h>
156 #ifndef OPENSSL_NO_DH
157 # include <openssl/dh.h>
159 #ifndef OPENSSL_NO_ENGINE
160 # include <openssl/engine.h>
163 const char *SSL_version_str = OPENSSL_VERSION_TEXT;
165 SSL3_ENC_METHOD ssl3_undef_enc_method = {
167 * evil casts, but these functions are only called if there's a library
170 (int (*)(SSL *, int))ssl_undefined_function,
171 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
172 ssl_undefined_function,
173 (int (*)(SSL *, unsigned char *, unsigned char *, int))
174 ssl_undefined_function,
175 (int (*)(SSL *, int))ssl_undefined_function,
176 (int (*)(SSL *, const char *, int, unsigned char *))
177 ssl_undefined_function,
178 0, /* finish_mac_length */
179 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
180 NULL, /* client_finished_label */
181 0, /* client_finished_label_len */
182 NULL, /* server_finished_label */
183 0, /* server_finished_label_len */
184 (int (*)(int))ssl_undefined_function,
185 (int (*)(SSL *, unsigned char *, size_t, const char *,
186 size_t, const unsigned char *, size_t,
187 int use_context))ssl_undefined_function,
190 int SSL_clear(SSL *s)
192 if (s->method == NULL) {
193 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
197 if (ssl_clear_bad_session(s)) {
198 SSL_SESSION_free(s->session);
206 if (s->renegotiate) {
207 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
213 s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT);
215 s->version = s->method->version;
216 s->client_version = s->version;
217 s->rwstate = SSL_NOTHING;
219 BUF_MEM_free(s->init_buf);
221 ssl_clear_cipher_ctx(s);
222 ssl_clear_hash_ctx(&s->read_hash);
223 ssl_clear_hash_ctx(&s->write_hash);
227 * Check to see if we were changed into a different method, if so, revert
228 * back if we are not doing session-id reuse.
230 if (!s->in_handshake && (s->session == NULL)
231 && (s->method != s->ctx->method)) {
232 s->method->ssl_free(s);
233 s->method = s->ctx->method;
234 if (!s->method->ssl_new(s))
237 s->method->ssl_clear(s);
239 RECORD_LAYER_clear(&s->rlayer);
244 /** Used to change an SSL_CTXs default SSL method type */
245 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
247 STACK_OF(SSL_CIPHER) *sk;
251 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
252 &(ctx->cipher_list_by_id),
253 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
254 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
255 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
256 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
262 SSL *SSL_new(SSL_CTX *ctx)
267 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
270 if (ctx->method == NULL) {
271 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
275 s = OPENSSL_malloc(sizeof(SSL));
278 memset(s, 0, sizeof(SSL));
280 RECORD_LAYER_init(&s->rlayer, s);
282 #ifndef OPENSSL_NO_KRB5
283 s->kssl_ctx = kssl_ctx_new();
284 #endif /* OPENSSL_NO_KRB5 */
286 s->options = ctx->options;
288 s->max_cert_list = ctx->max_cert_list;
291 * Earlier library versions used to copy the pointer to the CERT, not
292 * its contents; only when setting new parameters for the per-SSL
293 * copy, ssl_cert_new would be called (and the direct reference to
294 * the per-SSL_CTX settings would be lost, but those still were
295 * indirectly accessed for various purposes, and for that reason they
296 * used to be known as s->ctx->default_cert). Now we don't look at the
297 * SSL_CTX's CERT after having duplicated it once.
299 s->cert = ssl_cert_dup(ctx->cert);
303 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
304 s->msg_callback = ctx->msg_callback;
305 s->msg_callback_arg = ctx->msg_callback_arg;
306 s->verify_mode = ctx->verify_mode;
307 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
308 s->sid_ctx_length = ctx->sid_ctx_length;
309 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
310 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
311 s->verify_callback = ctx->default_verify_callback;
312 s->generate_session_id = ctx->generate_session_id;
314 s->param = X509_VERIFY_PARAM_new();
317 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
318 s->quiet_shutdown = ctx->quiet_shutdown;
319 s->max_send_fragment = ctx->max_send_fragment;
321 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
323 #ifndef OPENSSL_NO_TLSEXT
324 s->tlsext_debug_cb = 0;
325 s->tlsext_debug_arg = NULL;
326 s->tlsext_ticket_expected = 0;
327 s->tlsext_status_type = -1;
328 s->tlsext_status_expected = 0;
329 s->tlsext_ocsp_ids = NULL;
330 s->tlsext_ocsp_exts = NULL;
331 s->tlsext_ocsp_resp = NULL;
332 s->tlsext_ocsp_resplen = -1;
333 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
334 s->initial_ctx = ctx;
335 # ifndef OPENSSL_NO_EC
336 if (ctx->tlsext_ecpointformatlist) {
337 s->tlsext_ecpointformatlist =
338 BUF_memdup(ctx->tlsext_ecpointformatlist,
339 ctx->tlsext_ecpointformatlist_length);
340 if (!s->tlsext_ecpointformatlist)
342 s->tlsext_ecpointformatlist_length =
343 ctx->tlsext_ecpointformatlist_length;
345 if (ctx->tlsext_ellipticcurvelist) {
346 s->tlsext_ellipticcurvelist =
347 BUF_memdup(ctx->tlsext_ellipticcurvelist,
348 ctx->tlsext_ellipticcurvelist_length);
349 if (!s->tlsext_ellipticcurvelist)
351 s->tlsext_ellipticcurvelist_length =
352 ctx->tlsext_ellipticcurvelist_length;
355 # ifndef OPENSSL_NO_NEXTPROTONEG
356 s->next_proto_negotiated = NULL;
359 if (s->ctx->alpn_client_proto_list) {
360 s->alpn_client_proto_list =
361 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
362 if (s->alpn_client_proto_list == NULL)
364 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
365 s->ctx->alpn_client_proto_list_len);
366 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
370 s->verify_result = X509_V_OK;
372 s->method = ctx->method;
374 if (!s->method->ssl_new(s))
378 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
383 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
385 #ifndef OPENSSL_NO_PSK
386 s->psk_client_callback = ctx->psk_client_callback;
387 s->psk_server_callback = ctx->psk_server_callback;
393 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
397 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
398 unsigned int sid_ctx_len)
400 if (sid_ctx_len > sizeof ctx->sid_ctx) {
401 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
402 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
405 ctx->sid_ctx_length = sid_ctx_len;
406 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
411 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
412 unsigned int sid_ctx_len)
414 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
415 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
416 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
419 ssl->sid_ctx_length = sid_ctx_len;
420 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
425 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
427 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
428 ctx->generate_session_id = cb;
429 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
433 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
435 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
436 ssl->generate_session_id = cb;
437 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
441 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
445 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
446 * we can "construct" a session to give us the desired check - ie. to
447 * find if there's a session in the hash table that would conflict with
448 * any new session built out of this id/id_len and the ssl_version in use
453 if (id_len > sizeof r.session_id)
456 r.ssl_version = ssl->version;
457 r.session_id_length = id_len;
458 memcpy(r.session_id, id, id_len);
460 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
461 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
462 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
466 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
468 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
471 int SSL_set_purpose(SSL *s, int purpose)
473 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
476 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
478 return X509_VERIFY_PARAM_set_trust(s->param, trust);
481 int SSL_set_trust(SSL *s, int trust)
483 return X509_VERIFY_PARAM_set_trust(s->param, trust);
486 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
488 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
491 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
493 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
496 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
501 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
506 void SSL_certs_clear(SSL *s)
508 ssl_cert_clear_certs(s->cert);
511 void SSL_free(SSL *s)
518 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
526 fprintf(stderr, "SSL_free, bad reference count\n");
531 X509_VERIFY_PARAM_free(s->param);
532 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
534 if (s->bbio != NULL) {
535 /* If the buffering BIO is in place, pop it off */
536 if (s->bbio == s->wbio) {
537 s->wbio = BIO_pop(s->wbio);
542 BIO_free_all(s->rbio);
543 if (s->wbio != s->rbio)
544 BIO_free_all(s->wbio);
546 BUF_MEM_free(s->init_buf);
548 /* add extra stuff */
549 sk_SSL_CIPHER_free(s->cipher_list);
550 sk_SSL_CIPHER_free(s->cipher_list_by_id);
552 /* Make the next call work :-) */
553 if (s->session != NULL) {
554 ssl_clear_bad_session(s);
555 SSL_SESSION_free(s->session);
558 ssl_clear_cipher_ctx(s);
559 ssl_clear_hash_ctx(&s->read_hash);
560 ssl_clear_hash_ctx(&s->write_hash);
562 ssl_cert_free(s->cert);
563 /* Free up if allocated */
565 #ifndef OPENSSL_NO_TLSEXT
566 OPENSSL_free(s->tlsext_hostname);
567 SSL_CTX_free(s->initial_ctx);
568 # ifndef OPENSSL_NO_EC
569 OPENSSL_free(s->tlsext_ecpointformatlist);
570 OPENSSL_free(s->tlsext_ellipticcurvelist);
571 # endif /* OPENSSL_NO_EC */
572 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
573 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
574 OPENSSL_free(s->tlsext_ocsp_resp);
575 OPENSSL_free(s->alpn_client_proto_list);
578 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
580 if (s->method != NULL)
581 s->method->ssl_free(s);
583 RECORD_LAYER_release(&s->rlayer);
585 SSL_CTX_free(s->ctx);
587 #ifndef OPENSSL_NO_KRB5
588 if (s->kssl_ctx != NULL)
589 kssl_ctx_free(s->kssl_ctx);
590 #endif /* OPENSSL_NO_KRB5 */
592 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
593 OPENSSL_free(s->next_proto_negotiated);
596 #ifndef OPENSSL_NO_SRTP
597 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
603 void SSL_set_rbio(SSL *s, BIO *rbio)
606 BIO_free_all(s->rbio);
610 void SSL_set_wbio(SSL *s, BIO *wbio)
613 * If the output buffering BIO is still in place, remove it
615 if (s->bbio != NULL) {
616 if (s->wbio == s->bbio) {
617 s->wbio = s->wbio->next_bio;
618 s->bbio->next_bio = NULL;
621 if (s->wbio != wbio && s->rbio != s->wbio)
622 BIO_free_all(s->wbio);
626 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
628 SSL_set_wbio(s, wbio);
629 SSL_set_rbio(s, rbio);
632 BIO *SSL_get_rbio(const SSL *s)
637 BIO *SSL_get_wbio(const SSL *s)
642 int SSL_get_fd(const SSL *s)
644 return (SSL_get_rfd(s));
647 int SSL_get_rfd(const SSL *s)
653 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
659 int SSL_get_wfd(const SSL *s)
665 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
671 #ifndef OPENSSL_NO_SOCK
672 int SSL_set_fd(SSL *s, int fd)
677 bio = BIO_new(BIO_s_socket());
680 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
683 BIO_set_fd(bio, fd, BIO_NOCLOSE);
684 SSL_set_bio(s, bio, bio);
690 int SSL_set_wfd(SSL *s, int fd)
695 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
696 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
697 bio = BIO_new(BIO_s_socket());
700 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
703 BIO_set_fd(bio, fd, BIO_NOCLOSE);
704 SSL_set_bio(s, SSL_get_rbio(s), bio);
706 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
712 int SSL_set_rfd(SSL *s, int fd)
717 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
718 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
719 bio = BIO_new(BIO_s_socket());
722 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
725 BIO_set_fd(bio, fd, BIO_NOCLOSE);
726 SSL_set_bio(s, bio, SSL_get_wbio(s));
728 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
735 /* return length of latest Finished message we sent, copy to 'buf' */
736 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
741 ret = s->s3->tmp.finish_md_len;
744 memcpy(buf, s->s3->tmp.finish_md, count);
749 /* return length of latest Finished message we expected, copy to 'buf' */
750 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
755 ret = s->s3->tmp.peer_finish_md_len;
758 memcpy(buf, s->s3->tmp.peer_finish_md, count);
763 int SSL_get_verify_mode(const SSL *s)
765 return (s->verify_mode);
768 int SSL_get_verify_depth(const SSL *s)
770 return X509_VERIFY_PARAM_get_depth(s->param);
773 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
774 return (s->verify_callback);
777 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
779 return (ctx->verify_mode);
782 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
784 return X509_VERIFY_PARAM_get_depth(ctx->param);
787 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
788 return (ctx->default_verify_callback);
791 void SSL_set_verify(SSL *s, int mode,
792 int (*callback) (int ok, X509_STORE_CTX *ctx))
794 s->verify_mode = mode;
795 if (callback != NULL)
796 s->verify_callback = callback;
799 void SSL_set_verify_depth(SSL *s, int depth)
801 X509_VERIFY_PARAM_set_depth(s->param, depth);
804 void SSL_set_read_ahead(SSL *s, int yes)
806 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
809 int SSL_get_read_ahead(const SSL *s)
811 return RECORD_LAYER_get_read_ahead(&s->rlayer);
814 int SSL_pending(const SSL *s)
817 * SSL_pending cannot work properly if read-ahead is enabled
818 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
819 * impossible to fix since SSL_pending cannot report errors that may be
820 * observed while scanning the new data. (Note that SSL_pending() is
821 * often used as a boolean value, so we'd better not return -1.)
823 return (s->method->ssl_pending(s));
826 X509 *SSL_get_peer_certificate(const SSL *s)
830 if ((s == NULL) || (s->session == NULL))
833 r = s->session->peer;
838 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
843 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
847 if ((s == NULL) || (s->session == NULL)
848 || (s->session->sess_cert == NULL))
851 r = s->session->sess_cert->cert_chain;
854 * If we are a client, cert_chain includes the peer's own certificate; if
855 * we are a server, it does not.
862 * Now in theory, since the calling process own 't' it should be safe to
863 * modify. We need to be able to read f without being hassled
865 int SSL_copy_session_id(SSL *t, const SSL *f)
867 /* Do we need to to SSL locking? */
868 if (!SSL_set_session(t, SSL_get_session(f))) {
873 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
875 if (t->method != f->method) {
876 t->method->ssl_free(t); /* cleanup current */
877 t->method = f->method; /* change method */
878 t->method->ssl_new(t); /* setup new */
881 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
882 ssl_cert_free(t->cert);
884 if (!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
891 /* Fix this so it checks all the valid key/cert options */
892 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
895 (ctx->cert->key->x509 == NULL)) {
896 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
897 SSL_R_NO_CERTIFICATE_ASSIGNED);
900 if (ctx->cert->key->privatekey == NULL) {
901 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
902 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
905 return (X509_check_private_key
906 (ctx->cert->key->x509, ctx->cert->key->privatekey));
909 /* Fix this function so that it takes an optional type parameter */
910 int SSL_check_private_key(const SSL *ssl)
913 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
916 if (ssl->cert->key->x509 == NULL) {
917 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
920 if (ssl->cert->key->privatekey == NULL) {
921 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
924 return (X509_check_private_key(ssl->cert->key->x509,
925 ssl->cert->key->privatekey));
928 int SSL_accept(SSL *s)
930 if (s->handshake_func == 0)
931 /* Not properly initialized yet */
932 SSL_set_accept_state(s);
934 return (s->method->ssl_accept(s));
937 int SSL_connect(SSL *s)
939 if (s->handshake_func == 0)
940 /* Not properly initialized yet */
941 SSL_set_connect_state(s);
943 return (s->method->ssl_connect(s));
946 long SSL_get_default_timeout(const SSL *s)
948 return (s->method->get_timeout());
951 int SSL_read(SSL *s, void *buf, int num)
953 if (s->handshake_func == 0) {
954 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
958 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
959 s->rwstate = SSL_NOTHING;
962 return (s->method->ssl_read(s, buf, num));
965 int SSL_peek(SSL *s, void *buf, int num)
967 if (s->handshake_func == 0) {
968 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
972 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
975 return (s->method->ssl_peek(s, buf, num));
978 int SSL_write(SSL *s, const void *buf, int num)
980 if (s->handshake_func == 0) {
981 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
985 if (s->shutdown & SSL_SENT_SHUTDOWN) {
986 s->rwstate = SSL_NOTHING;
987 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
990 return (s->method->ssl_write(s, buf, num));
993 int SSL_shutdown(SSL *s)
996 * Note that this function behaves differently from what one might
997 * expect. Return values are 0 for no success (yet), 1 for success; but
998 * calling it once is usually not enough, even if blocking I/O is used
999 * (see ssl3_shutdown).
1002 if (s->handshake_func == 0) {
1003 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1007 if ((s != NULL) && !SSL_in_init(s))
1008 return (s->method->ssl_shutdown(s));
1013 int SSL_renegotiate(SSL *s)
1015 if (s->renegotiate == 0)
1020 return (s->method->ssl_renegotiate(s));
1023 int SSL_renegotiate_abbreviated(SSL *s)
1025 if (s->renegotiate == 0)
1030 return (s->method->ssl_renegotiate(s));
1033 int SSL_renegotiate_pending(SSL *s)
1036 * becomes true when negotiation is requested; false again once a
1037 * handshake has finished
1039 return (s->renegotiate != 0);
1042 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1047 case SSL_CTRL_GET_READ_AHEAD:
1048 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1049 case SSL_CTRL_SET_READ_AHEAD:
1050 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1051 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1054 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1055 s->msg_callback_arg = parg;
1058 case SSL_CTRL_OPTIONS:
1059 return (s->options |= larg);
1060 case SSL_CTRL_CLEAR_OPTIONS:
1061 return (s->options &= ~larg);
1063 return (s->mode |= larg);
1064 case SSL_CTRL_CLEAR_MODE:
1065 return (s->mode &= ~larg);
1066 case SSL_CTRL_GET_MAX_CERT_LIST:
1067 return (s->max_cert_list);
1068 case SSL_CTRL_SET_MAX_CERT_LIST:
1069 l = s->max_cert_list;
1070 s->max_cert_list = larg;
1072 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1073 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1075 s->max_send_fragment = larg;
1077 case SSL_CTRL_GET_RI_SUPPORT:
1079 return s->s3->send_connection_binding;
1082 case SSL_CTRL_CERT_FLAGS:
1083 return (s->cert->cert_flags |= larg);
1084 case SSL_CTRL_CLEAR_CERT_FLAGS:
1085 return (s->cert->cert_flags &= ~larg);
1087 case SSL_CTRL_GET_RAW_CIPHERLIST:
1089 if (s->cert->ciphers_raw == NULL)
1091 *(unsigned char **)parg = s->cert->ciphers_raw;
1092 return (int)s->cert->ciphers_rawlen;
1094 return ssl_put_cipher_by_char(s, NULL, NULL);
1095 case SSL_CTRL_GET_EXTMS_SUPPORT:
1096 if (!s->session || SSL_in_init(s) || s->in_handshake)
1098 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1103 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1107 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1110 case SSL_CTRL_SET_MSG_CALLBACK:
1111 s->msg_callback = (void (*)
1112 (int write_p, int version, int content_type,
1113 const void *buf, size_t len, SSL *ssl,
1118 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1122 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1124 return ctx->sessions;
1127 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1130 /* For some cases with ctx == NULL perform syntax checks */
1133 #ifndef OPENSSL_NO_EC
1134 case SSL_CTRL_SET_CURVES_LIST:
1135 return tls1_set_curves_list(NULL, NULL, parg);
1137 case SSL_CTRL_SET_SIGALGS_LIST:
1138 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1139 return tls1_set_sigalgs_list(NULL, parg, 0);
1146 case SSL_CTRL_GET_READ_AHEAD:
1147 return (ctx->read_ahead);
1148 case SSL_CTRL_SET_READ_AHEAD:
1149 l = ctx->read_ahead;
1150 ctx->read_ahead = larg;
1153 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1154 ctx->msg_callback_arg = parg;
1157 case SSL_CTRL_GET_MAX_CERT_LIST:
1158 return (ctx->max_cert_list);
1159 case SSL_CTRL_SET_MAX_CERT_LIST:
1160 l = ctx->max_cert_list;
1161 ctx->max_cert_list = larg;
1164 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1165 l = ctx->session_cache_size;
1166 ctx->session_cache_size = larg;
1168 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1169 return (ctx->session_cache_size);
1170 case SSL_CTRL_SET_SESS_CACHE_MODE:
1171 l = ctx->session_cache_mode;
1172 ctx->session_cache_mode = larg;
1174 case SSL_CTRL_GET_SESS_CACHE_MODE:
1175 return (ctx->session_cache_mode);
1177 case SSL_CTRL_SESS_NUMBER:
1178 return (lh_SSL_SESSION_num_items(ctx->sessions));
1179 case SSL_CTRL_SESS_CONNECT:
1180 return (ctx->stats.sess_connect);
1181 case SSL_CTRL_SESS_CONNECT_GOOD:
1182 return (ctx->stats.sess_connect_good);
1183 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1184 return (ctx->stats.sess_connect_renegotiate);
1185 case SSL_CTRL_SESS_ACCEPT:
1186 return (ctx->stats.sess_accept);
1187 case SSL_CTRL_SESS_ACCEPT_GOOD:
1188 return (ctx->stats.sess_accept_good);
1189 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1190 return (ctx->stats.sess_accept_renegotiate);
1191 case SSL_CTRL_SESS_HIT:
1192 return (ctx->stats.sess_hit);
1193 case SSL_CTRL_SESS_CB_HIT:
1194 return (ctx->stats.sess_cb_hit);
1195 case SSL_CTRL_SESS_MISSES:
1196 return (ctx->stats.sess_miss);
1197 case SSL_CTRL_SESS_TIMEOUTS:
1198 return (ctx->stats.sess_timeout);
1199 case SSL_CTRL_SESS_CACHE_FULL:
1200 return (ctx->stats.sess_cache_full);
1201 case SSL_CTRL_OPTIONS:
1202 return (ctx->options |= larg);
1203 case SSL_CTRL_CLEAR_OPTIONS:
1204 return (ctx->options &= ~larg);
1206 return (ctx->mode |= larg);
1207 case SSL_CTRL_CLEAR_MODE:
1208 return (ctx->mode &= ~larg);
1209 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1210 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1212 ctx->max_send_fragment = larg;
1214 case SSL_CTRL_CERT_FLAGS:
1215 return (ctx->cert->cert_flags |= larg);
1216 case SSL_CTRL_CLEAR_CERT_FLAGS:
1217 return (ctx->cert->cert_flags &= ~larg);
1219 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1223 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1226 case SSL_CTRL_SET_MSG_CALLBACK:
1227 ctx->msg_callback = (void (*)
1228 (int write_p, int version, int content_type,
1229 const void *buf, size_t len, SSL *ssl,
1234 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1238 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1246 return ((l > 0) ? 1 : -1);
1249 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1250 const SSL_CIPHER *const *bp)
1254 l = (*ap)->id - (*bp)->id;
1258 return ((l > 0) ? 1 : -1);
1261 /** return a STACK of the ciphers available for the SSL and in order of
1263 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1266 if (s->cipher_list != NULL) {
1267 return (s->cipher_list);
1268 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1269 return (s->ctx->cipher_list);
1275 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1277 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1279 ciphers = SSL_get_ciphers(s);
1282 ssl_set_client_disabled(s);
1283 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1284 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1285 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1287 sk = sk_SSL_CIPHER_new_null();
1290 if (!sk_SSL_CIPHER_push(sk, c)) {
1291 sk_SSL_CIPHER_free(sk);
1299 /** return a STACK of the ciphers available for the SSL and in order of
1301 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1304 if (s->cipher_list_by_id != NULL) {
1305 return (s->cipher_list_by_id);
1306 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1307 return (s->ctx->cipher_list_by_id);
1313 /** The old interface to get the same thing as SSL_get_ciphers() */
1314 const char *SSL_get_cipher_list(const SSL *s, int n)
1317 STACK_OF(SSL_CIPHER) *sk;
1321 sk = SSL_get_ciphers(s);
1322 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1324 c = sk_SSL_CIPHER_value(sk, n);
1330 /** specify the ciphers to be used by default by the SSL_CTX */
1331 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1333 STACK_OF(SSL_CIPHER) *sk;
1335 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1336 &ctx->cipher_list_by_id, str, ctx->cert);
1338 * ssl_create_cipher_list may return an empty stack if it was unable to
1339 * find a cipher matching the given rule string (for example if the rule
1340 * string specifies a cipher which has been disabled). This is not an
1341 * error as far as ssl_create_cipher_list is concerned, and hence
1342 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1346 else if (sk_SSL_CIPHER_num(sk) == 0) {
1347 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1353 /** specify the ciphers to be used by the SSL */
1354 int SSL_set_cipher_list(SSL *s, const char *str)
1356 STACK_OF(SSL_CIPHER) *sk;
1358 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1359 &s->cipher_list_by_id, str, s->cert);
1360 /* see comment in SSL_CTX_set_cipher_list */
1363 else if (sk_SSL_CIPHER_num(sk) == 0) {
1364 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1370 /* works well for SSLv2, not so good for SSLv3 */
1371 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1374 STACK_OF(SSL_CIPHER) *sk;
1378 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1382 sk = s->session->ciphers;
1384 if (sk_SSL_CIPHER_num(sk) == 0)
1387 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1390 c = sk_SSL_CIPHER_value(sk, i);
1391 n = strlen(c->name);
1407 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1409 int (*put_cb) (const SSL_CIPHER *,
1415 int empty_reneg_info_scsv = !s->renegotiate;
1416 /* Set disabled masks for this session */
1417 ssl_set_client_disabled(s);
1423 put_cb = s->method->put_cipher_by_char;
1425 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1426 c = sk_SSL_CIPHER_value(sk, i);
1427 /* Skip disabled ciphers */
1428 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1430 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1431 if (c->id == SSL3_CK_SCSV) {
1432 if (!empty_reneg_info_scsv)
1435 empty_reneg_info_scsv = 0;
1442 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1446 if (empty_reneg_info_scsv) {
1447 static SSL_CIPHER scsv = {
1448 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1450 j = put_cb(&scsv, p);
1452 #ifdef OPENSSL_RI_DEBUG
1454 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1457 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1458 static SSL_CIPHER scsv = {
1459 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1461 j = put_cb(&scsv, p);
1469 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1471 STACK_OF(SSL_CIPHER) **skp)
1473 const SSL_CIPHER *c;
1474 STACK_OF(SSL_CIPHER) *sk;
1478 s->s3->send_connection_binding = 0;
1480 n = ssl_put_cipher_by_char(s, NULL, NULL);
1481 if (n == 0 || (num % n) != 0) {
1482 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1483 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1486 if ((skp == NULL) || (*skp == NULL))
1487 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1490 sk_SSL_CIPHER_zero(sk);
1493 OPENSSL_free(s->cert->ciphers_raw);
1494 s->cert->ciphers_raw = BUF_memdup(p, num);
1495 if (s->cert->ciphers_raw == NULL) {
1496 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1499 s->cert->ciphers_rawlen = (size_t)num;
1501 for (i = 0; i < num; i += n) {
1502 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1503 if (s->s3 && (n != 3 || !p[0]) &&
1504 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1505 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1506 /* SCSV fatal if renegotiating */
1507 if (s->renegotiate) {
1508 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1509 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1510 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1513 s->s3->send_connection_binding = 1;
1515 #ifdef OPENSSL_RI_DEBUG
1516 fprintf(stderr, "SCSV received by server\n");
1521 /* Check for TLS_FALLBACK_SCSV */
1522 if ((n != 3 || !p[0]) &&
1523 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1524 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1526 * The SCSV indicates that the client previously tried a higher
1527 * version. Fail if the current version is an unexpected
1530 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1531 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1532 SSL_R_INAPPROPRIATE_FALLBACK);
1534 ssl3_send_alert(s, SSL3_AL_FATAL,
1535 SSL_AD_INAPPROPRIATE_FALLBACK);
1542 c = ssl_get_cipher_by_char(s, p);
1545 if (!sk_SSL_CIPHER_push(sk, c)) {
1546 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1556 if ((skp == NULL) || (*skp == NULL))
1557 sk_SSL_CIPHER_free(sk);
1561 #ifndef OPENSSL_NO_TLSEXT
1562 /** return a servername extension value if provided in Client Hello, or NULL.
1563 * So far, only host_name types are defined (RFC 3546).
1566 const char *SSL_get_servername(const SSL *s, const int type)
1568 if (type != TLSEXT_NAMETYPE_host_name)
1571 return s->session && !s->tlsext_hostname ?
1572 s->session->tlsext_hostname : s->tlsext_hostname;
1575 int SSL_get_servername_type(const SSL *s)
1578 && (!s->tlsext_hostname ? s->session->
1579 tlsext_hostname : s->tlsext_hostname))
1580 return TLSEXT_NAMETYPE_host_name;
1585 * SSL_select_next_proto implements the standard protocol selection. It is
1586 * expected that this function is called from the callback set by
1587 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1588 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1589 * not included in the length. A byte string of length 0 is invalid. No byte
1590 * string may be truncated. The current, but experimental algorithm for
1591 * selecting the protocol is: 1) If the server doesn't support NPN then this
1592 * is indicated to the callback. In this case, the client application has to
1593 * abort the connection or have a default application level protocol. 2) If
1594 * the server supports NPN, but advertises an empty list then the client
1595 * selects the first protcol in its list, but indicates via the API that this
1596 * fallback case was enacted. 3) Otherwise, the client finds the first
1597 * protocol in the server's list that it supports and selects this protocol.
1598 * This is because it's assumed that the server has better information about
1599 * which protocol a client should use. 4) If the client doesn't support any
1600 * of the server's advertised protocols, then this is treated the same as
1601 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1602 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1604 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1605 const unsigned char *server,
1606 unsigned int server_len,
1607 const unsigned char *client,
1608 unsigned int client_len)
1611 const unsigned char *result;
1612 int status = OPENSSL_NPN_UNSUPPORTED;
1615 * For each protocol in server preference order, see if we support it.
1617 for (i = 0; i < server_len;) {
1618 for (j = 0; j < client_len;) {
1619 if (server[i] == client[j] &&
1620 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1621 /* We found a match */
1622 result = &server[i];
1623 status = OPENSSL_NPN_NEGOTIATED;
1633 /* There's no overlap between our protocols and the server's list. */
1635 status = OPENSSL_NPN_NO_OVERLAP;
1638 *out = (unsigned char *)result + 1;
1639 *outlen = result[0];
1643 # ifndef OPENSSL_NO_NEXTPROTONEG
1645 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1646 * client's requested protocol for this connection and returns 0. If the
1647 * client didn't request any protocol, then *data is set to NULL. Note that
1648 * the client can request any protocol it chooses. The value returned from
1649 * this function need not be a member of the list of supported protocols
1650 * provided by the callback.
1652 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1655 *data = s->next_proto_negotiated;
1659 *len = s->next_proto_negotiated_len;
1664 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1665 * a TLS server needs a list of supported protocols for Next Protocol
1666 * Negotiation. The returned list must be in wire format. The list is
1667 * returned by setting |out| to point to it and |outlen| to its length. This
1668 * memory will not be modified, but one should assume that the SSL* keeps a
1669 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1670 * wishes to advertise. Otherwise, no such extension will be included in the
1673 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1674 int (*cb) (SSL *ssl,
1677 unsigned int *outlen,
1678 void *arg), void *arg)
1680 ctx->next_protos_advertised_cb = cb;
1681 ctx->next_protos_advertised_cb_arg = arg;
1685 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1686 * client needs to select a protocol from the server's provided list. |out|
1687 * must be set to point to the selected protocol (which may be within |in|).
1688 * The length of the protocol name must be written into |outlen|. The
1689 * server's advertised protocols are provided in |in| and |inlen|. The
1690 * callback can assume that |in| is syntactically valid. The client must
1691 * select a protocol. It is fatal to the connection if this callback returns
1692 * a value other than SSL_TLSEXT_ERR_OK.
1694 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1695 int (*cb) (SSL *s, unsigned char **out,
1696 unsigned char *outlen,
1697 const unsigned char *in,
1699 void *arg), void *arg)
1701 ctx->next_proto_select_cb = cb;
1702 ctx->next_proto_select_cb_arg = arg;
1707 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1708 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1709 * length-prefixed strings). Returns 0 on success.
1711 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1712 unsigned protos_len)
1714 OPENSSL_free(ctx->alpn_client_proto_list);
1715 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1716 if (!ctx->alpn_client_proto_list)
1718 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1719 ctx->alpn_client_proto_list_len = protos_len;
1725 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1726 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1727 * length-prefixed strings). Returns 0 on success.
1729 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1730 unsigned protos_len)
1732 OPENSSL_free(ssl->alpn_client_proto_list);
1733 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1734 if (!ssl->alpn_client_proto_list)
1736 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1737 ssl->alpn_client_proto_list_len = protos_len;
1743 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1744 * called during ClientHello processing in order to select an ALPN protocol
1745 * from the client's list of offered protocols.
1747 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1748 int (*cb) (SSL *ssl,
1749 const unsigned char **out,
1750 unsigned char *outlen,
1751 const unsigned char *in,
1753 void *arg), void *arg)
1755 ctx->alpn_select_cb = cb;
1756 ctx->alpn_select_cb_arg = arg;
1760 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1761 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1762 * (not including the leading length-prefix byte). If the server didn't
1763 * respond with a negotiated protocol then |*len| will be zero.
1765 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1770 *data = ssl->s3->alpn_selected;
1774 *len = ssl->s3->alpn_selected_len;
1777 #endif /* !OPENSSL_NO_TLSEXT */
1779 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1780 const char *label, size_t llen,
1781 const unsigned char *p, size_t plen,
1784 if (s->version < TLS1_VERSION)
1787 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1792 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1797 ((unsigned int)a->session_id[0]) |
1798 ((unsigned int)a->session_id[1] << 8L) |
1799 ((unsigned long)a->session_id[2] << 16L) |
1800 ((unsigned long)a->session_id[3] << 24L);
1805 * NB: If this function (or indeed the hash function which uses a sort of
1806 * coarser function than this one) is changed, ensure
1807 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1808 * being able to construct an SSL_SESSION that will collide with any existing
1809 * session with a matching session ID.
1811 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1813 if (a->ssl_version != b->ssl_version)
1815 if (a->session_id_length != b->session_id_length)
1817 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1821 * These wrapper functions should remain rather than redeclaring
1822 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1823 * variable. The reason is that the functions aren't static, they're exposed
1826 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1827 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1829 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1831 SSL_CTX *ret = NULL;
1834 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1838 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1839 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1843 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1844 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1847 ret = OPENSSL_malloc(sizeof(SSL_CTX));
1851 memset(ret, 0, sizeof(SSL_CTX));
1855 ret->cert_store = NULL;
1856 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1857 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1858 ret->session_cache_head = NULL;
1859 ret->session_cache_tail = NULL;
1861 /* We take the system default */
1862 ret->session_timeout = meth->get_timeout();
1864 ret->new_session_cb = 0;
1865 ret->remove_session_cb = 0;
1866 ret->get_session_cb = 0;
1867 ret->generate_session_id = 0;
1869 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1871 ret->references = 1;
1872 ret->quiet_shutdown = 0;
1873 ret->info_callback = NULL;
1874 ret->app_verify_callback = 0;
1875 ret->app_verify_arg = NULL;
1876 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1877 ret->read_ahead = 0;
1878 ret->msg_callback = 0;
1879 ret->msg_callback_arg = NULL;
1880 ret->verify_mode = SSL_VERIFY_NONE;
1881 ret->sid_ctx_length = 0;
1882 ret->default_verify_callback = NULL;
1883 if ((ret->cert = ssl_cert_new()) == NULL)
1886 ret->default_passwd_callback = 0;
1887 ret->default_passwd_callback_userdata = NULL;
1888 ret->client_cert_cb = 0;
1889 ret->app_gen_cookie_cb = 0;
1890 ret->app_verify_cookie_cb = 0;
1892 ret->sessions = lh_SSL_SESSION_new();
1893 if (ret->sessions == NULL)
1895 ret->cert_store = X509_STORE_new();
1896 if (ret->cert_store == NULL)
1899 if (!ssl_create_cipher_list(ret->method,
1900 &ret->cipher_list, &ret->cipher_list_by_id,
1901 SSL_DEFAULT_CIPHER_LIST, ret->cert)
1902 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1903 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1907 ret->param = X509_VERIFY_PARAM_new();
1911 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1912 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1915 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1916 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1920 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1923 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1925 ret->extra_certs = NULL;
1926 /* No compression for DTLS */
1927 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1928 ret->comp_methods = SSL_COMP_get_compression_methods();
1930 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1932 #ifndef OPENSSL_NO_TLSEXT
1933 ret->tlsext_servername_callback = 0;
1934 ret->tlsext_servername_arg = NULL;
1935 /* Setup RFC4507 ticket keys */
1936 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1937 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1938 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1939 ret->options |= SSL_OP_NO_TICKET;
1941 ret->tlsext_status_cb = 0;
1942 ret->tlsext_status_arg = NULL;
1944 # ifndef OPENSSL_NO_NEXTPROTONEG
1945 ret->next_protos_advertised_cb = 0;
1946 ret->next_proto_select_cb = 0;
1949 #ifndef OPENSSL_NO_PSK
1950 ret->psk_identity_hint = NULL;
1951 ret->psk_client_callback = NULL;
1952 ret->psk_server_callback = NULL;
1954 #ifndef OPENSSL_NO_SRP
1955 if (!SSL_CTX_SRP_CTX_init(ret))
1958 #ifndef OPENSSL_NO_ENGINE
1959 ret->client_cert_engine = NULL;
1960 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1961 # define eng_strx(x) #x
1962 # define eng_str(x) eng_strx(x)
1963 /* Use specific client engine automatically... ignore errors */
1966 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1969 ENGINE_load_builtin_engines();
1970 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1972 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1978 * Default is to connect to non-RI servers. When RI is more widely
1979 * deployed might change this.
1981 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1985 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
1991 void SSL_CTX_free(SSL_CTX *a)
1998 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2000 REF_PRINT("SSL_CTX", a);
2006 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
2011 X509_VERIFY_PARAM_free(a->param);
2014 * Free internal session cache. However: the remove_cb() may reference
2015 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2016 * after the sessions were flushed.
2017 * As the ex_data handling routines might also touch the session cache,
2018 * the most secure solution seems to be: empty (flush) the cache, then
2019 * free ex_data, then finally free the cache.
2020 * (See ticket [openssl.org #212].)
2022 if (a->sessions != NULL)
2023 SSL_CTX_flush_sessions(a, 0);
2025 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2026 lh_SSL_SESSION_free(a->sessions);
2027 X509_STORE_free(a->cert_store);
2028 sk_SSL_CIPHER_free(a->cipher_list);
2029 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2030 ssl_cert_free(a->cert);
2031 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2032 sk_X509_pop_free(a->extra_certs, X509_free);
2033 a->comp_methods = NULL;
2034 #ifndef OPENSSL_NO_SRTP
2035 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2037 #ifndef OPENSSL_NO_PSK
2038 OPENSSL_free(a->psk_identity_hint);
2040 #ifndef OPENSSL_NO_SRP
2041 SSL_CTX_SRP_CTX_free(a);
2043 #ifndef OPENSSL_NO_ENGINE
2044 if (a->client_cert_engine)
2045 ENGINE_finish(a->client_cert_engine);
2048 #ifndef OPENSSL_NO_TLSEXT
2049 # ifndef OPENSSL_NO_EC
2050 OPENSSL_free(a->tlsext_ecpointformatlist);
2051 OPENSSL_free(a->tlsext_ellipticcurvelist);
2053 OPENSSL_free(a->alpn_client_proto_list);
2059 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2061 ctx->default_passwd_callback = cb;
2064 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2066 ctx->default_passwd_callback_userdata = u;
2069 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2070 int (*cb) (X509_STORE_CTX *, void *),
2073 ctx->app_verify_callback = cb;
2074 ctx->app_verify_arg = arg;
2077 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2078 int (*cb) (int, X509_STORE_CTX *))
2080 ctx->verify_mode = mode;
2081 ctx->default_verify_callback = cb;
2084 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2086 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2089 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2092 ssl_cert_set_cert_cb(c->cert, cb, arg);
2095 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2097 ssl_cert_set_cert_cb(s->cert, cb, arg);
2100 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2103 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2104 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2105 int rsa_tmp_export, dh_tmp_export, kl;
2106 unsigned long mask_k, mask_a, emask_k, emask_a;
2107 #ifndef OPENSSL_NO_EC
2108 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2109 int have_ecdh_tmp, ecdh_ok;
2111 EVP_PKEY *ecc_pkey = NULL;
2112 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2117 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2119 #ifndef OPENSSL_NO_RSA
2120 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2121 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2122 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2124 rsa_tmp = rsa_tmp_export = 0;
2126 #ifndef OPENSSL_NO_DH
2127 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2128 dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2130 && DH_size(c->dh_tmp) * 8 <= kl));
2132 dh_tmp = dh_tmp_export = 0;
2135 #ifndef OPENSSL_NO_EC
2136 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2138 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2139 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID;
2140 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2141 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2142 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2143 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2144 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2145 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2146 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID;
2147 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2148 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2149 /* FIX THIS EAY EAY EAY */
2150 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID;
2151 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2152 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2153 #ifndef OPENSSL_NO_EC
2154 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID;
2163 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2164 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2165 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2168 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2169 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2170 mask_k |= SSL_kGOST;
2171 mask_a |= SSL_aGOST01;
2173 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2174 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2175 mask_k |= SSL_kGOST;
2176 mask_a |= SSL_aGOST94;
2179 if (rsa_enc || (rsa_tmp && rsa_sign))
2181 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2182 emask_k |= SSL_kRSA;
2185 emask_k |= SSL_kDHE;
2193 emask_k |= SSL_kDHr;
2198 emask_k |= SSL_kDHd;
2200 if (emask_k & (SSL_kDHr | SSL_kDHd))
2203 if (rsa_enc || rsa_sign) {
2205 emask_a |= SSL_aRSA;
2210 emask_a |= SSL_aDSS;
2213 mask_a |= SSL_aNULL;
2214 emask_a |= SSL_aNULL;
2216 #ifndef OPENSSL_NO_KRB5
2217 mask_k |= SSL_kKRB5;
2218 mask_a |= SSL_aKRB5;
2219 emask_k |= SSL_kKRB5;
2220 emask_a |= SSL_aKRB5;
2224 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2225 * depending on the key usage extension.
2227 #ifndef OPENSSL_NO_EC
2228 if (have_ecc_cert) {
2229 cpk = &c->pkeys[SSL_PKEY_ECC];
2231 /* This call populates extension flags (ex_flags) */
2232 X509_check_purpose(x, -1, 0);
2233 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2234 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2235 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2236 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2237 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2239 ecc_pkey = X509_get_pubkey(x);
2240 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2241 EVP_PKEY_free(ecc_pkey);
2242 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2243 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2244 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2248 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2249 mask_k |= SSL_kECDHr;
2250 mask_a |= SSL_aECDH;
2251 if (ecc_pkey_size <= 163) {
2252 emask_k |= SSL_kECDHr;
2253 emask_a |= SSL_aECDH;
2257 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2258 mask_k |= SSL_kECDHe;
2259 mask_a |= SSL_aECDH;
2260 if (ecc_pkey_size <= 163) {
2261 emask_k |= SSL_kECDHe;
2262 emask_a |= SSL_aECDH;
2267 mask_a |= SSL_aECDSA;
2268 emask_a |= SSL_aECDSA;
2273 #ifndef OPENSSL_NO_EC
2274 if (have_ecdh_tmp) {
2275 mask_k |= SSL_kECDHE;
2276 emask_k |= SSL_kECDHE;
2280 #ifndef OPENSSL_NO_PSK
2283 emask_k |= SSL_kPSK;
2284 emask_a |= SSL_aPSK;
2289 c->export_mask_k = emask_k;
2290 c->export_mask_a = emask_a;
2294 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2295 #define ku_reject(x, usage) \
2296 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2298 #ifndef OPENSSL_NO_EC
2300 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2302 unsigned long alg_k, alg_a;
2303 EVP_PKEY *pkey = NULL;
2305 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2306 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2308 alg_k = cs->algorithm_mkey;
2309 alg_a = cs->algorithm_auth;
2311 if (SSL_C_IS_EXPORT(cs)) {
2312 /* ECDH key length in export ciphers must be <= 163 bits */
2313 pkey = X509_get_pubkey(x);
2316 keysize = EVP_PKEY_bits(pkey);
2317 EVP_PKEY_free(pkey);
2322 /* This call populates the ex_flags field correctly */
2323 X509_check_purpose(x, -1, 0);
2324 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2325 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2326 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2328 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2329 /* key usage, if present, must allow key agreement */
2330 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2331 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2332 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2335 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2336 /* signature alg must be ECDSA */
2337 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2338 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2339 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2343 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2344 /* signature alg must be RSA */
2346 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2347 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2348 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2353 if (alg_a & SSL_aECDSA) {
2354 /* key usage, if present, must allow signing */
2355 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2356 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2357 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2362 return 1; /* all checks are ok */
2367 static int ssl_get_server_cert_index(const SSL *s)
2370 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2371 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2372 idx = SSL_PKEY_RSA_SIGN;
2374 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2378 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2384 if (!s->s3 || !s->s3->tmp.new_cipher)
2386 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2388 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2390 * Broken protocol test: return last used certificate: which may mismatch
2393 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2397 i = ssl_get_server_cert_index(s);
2399 /* This may or may not be an error. */
2404 return &c->pkeys[i];
2407 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2410 unsigned long alg_a;
2414 alg_a = cipher->algorithm_auth;
2417 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2419 * Broken protocol test: use last key: which may mismatch the one
2422 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2423 idx = c->key - c->pkeys;
2427 if ((alg_a & SSL_aDSS) &&
2428 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2429 idx = SSL_PKEY_DSA_SIGN;
2430 else if (alg_a & SSL_aRSA) {
2431 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2432 idx = SSL_PKEY_RSA_SIGN;
2433 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2434 idx = SSL_PKEY_RSA_ENC;
2435 } else if ((alg_a & SSL_aECDSA) &&
2436 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2439 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2443 *pmd = c->pkeys[idx].digest;
2444 return c->pkeys[idx].privatekey;
2447 #ifndef OPENSSL_NO_TLSEXT
2448 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2449 size_t *serverinfo_length)
2453 *serverinfo_length = 0;
2456 i = ssl_get_server_cert_index(s);
2460 if (c->pkeys[i].serverinfo == NULL)
2463 *serverinfo = c->pkeys[i].serverinfo;
2464 *serverinfo_length = c->pkeys[i].serverinfo_length;
2469 void ssl_update_cache(SSL *s, int mode)
2474 * If the session_id_length is 0, we are not supposed to cache it, and it
2475 * would be rather hard to do anyway :-)
2477 if (s->session->session_id_length == 0)
2480 i = s->session_ctx->session_cache_mode;
2481 if ((i & mode) && (!s->hit)
2482 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2483 || SSL_CTX_add_session(s->session_ctx, s->session))
2484 && (s->session_ctx->new_session_cb != NULL)) {
2485 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2486 if (!s->session_ctx->new_session_cb(s, s->session))
2487 SSL_SESSION_free(s->session);
2490 /* auto flush every 255 connections */
2491 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2492 if ((((mode & SSL_SESS_CACHE_CLIENT)
2493 ? s->session_ctx->stats.sess_connect_good
2494 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2495 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2500 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2505 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2510 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2515 if (s->method != meth) {
2516 if (s->handshake_func != NULL)
2517 conn = (s->handshake_func == s->method->ssl_connect);
2519 if (s->method->version == meth->version)
2522 s->method->ssl_free(s);
2524 ret = s->method->ssl_new(s);
2528 s->handshake_func = meth->ssl_connect;
2530 s->handshake_func = meth->ssl_accept;
2535 int SSL_get_error(const SSL *s, int i)
2542 return (SSL_ERROR_NONE);
2545 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2546 * where we do encode the error
2548 if ((l = ERR_peek_error()) != 0) {
2549 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2550 return (SSL_ERROR_SYSCALL);
2552 return (SSL_ERROR_SSL);
2555 if ((i < 0) && SSL_want_read(s)) {
2556 bio = SSL_get_rbio(s);
2557 if (BIO_should_read(bio))
2558 return (SSL_ERROR_WANT_READ);
2559 else if (BIO_should_write(bio))
2561 * This one doesn't make too much sense ... We never try to write
2562 * to the rbio, and an application program where rbio and wbio
2563 * are separate couldn't even know what it should wait for.
2564 * However if we ever set s->rwstate incorrectly (so that we have
2565 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2566 * wbio *are* the same, this test works around that bug; so it
2567 * might be safer to keep it.
2569 return (SSL_ERROR_WANT_WRITE);
2570 else if (BIO_should_io_special(bio)) {
2571 reason = BIO_get_retry_reason(bio);
2572 if (reason == BIO_RR_CONNECT)
2573 return (SSL_ERROR_WANT_CONNECT);
2574 else if (reason == BIO_RR_ACCEPT)
2575 return (SSL_ERROR_WANT_ACCEPT);
2577 return (SSL_ERROR_SYSCALL); /* unknown */
2581 if ((i < 0) && SSL_want_write(s)) {
2582 bio = SSL_get_wbio(s);
2583 if (BIO_should_write(bio))
2584 return (SSL_ERROR_WANT_WRITE);
2585 else if (BIO_should_read(bio))
2587 * See above (SSL_want_read(s) with BIO_should_write(bio))
2589 return (SSL_ERROR_WANT_READ);
2590 else if (BIO_should_io_special(bio)) {
2591 reason = BIO_get_retry_reason(bio);
2592 if (reason == BIO_RR_CONNECT)
2593 return (SSL_ERROR_WANT_CONNECT);
2594 else if (reason == BIO_RR_ACCEPT)
2595 return (SSL_ERROR_WANT_ACCEPT);
2597 return (SSL_ERROR_SYSCALL);
2600 if ((i < 0) && SSL_want_x509_lookup(s)) {
2601 return (SSL_ERROR_WANT_X509_LOOKUP);
2605 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2606 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2607 return (SSL_ERROR_ZERO_RETURN);
2609 return (SSL_ERROR_SYSCALL);
2612 int SSL_do_handshake(SSL *s)
2616 if (s->handshake_func == NULL) {
2617 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2621 s->method->ssl_renegotiate_check(s);
2623 if (SSL_in_init(s) || SSL_in_before(s)) {
2624 ret = s->handshake_func(s);
2630 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2631 * calls will reset it
2633 void SSL_set_accept_state(SSL *s)
2637 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2638 s->handshake_func = s->method->ssl_accept;
2639 /* clear the current cipher */
2640 ssl_clear_cipher_ctx(s);
2641 ssl_clear_hash_ctx(&s->read_hash);
2642 ssl_clear_hash_ctx(&s->write_hash);
2645 void SSL_set_connect_state(SSL *s)
2649 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2650 s->handshake_func = s->method->ssl_connect;
2651 /* clear the current cipher */
2652 ssl_clear_cipher_ctx(s);
2653 ssl_clear_hash_ctx(&s->read_hash);
2654 ssl_clear_hash_ctx(&s->write_hash);
2657 int ssl_undefined_function(SSL *s)
2659 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2663 int ssl_undefined_void_function(void)
2665 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2666 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2670 int ssl_undefined_const_function(const SSL *s)
2672 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2673 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2677 SSL_METHOD *ssl_bad_method(int ver)
2679 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2683 const char *SSL_get_version(const SSL *s)
2685 if (s->version == TLS1_2_VERSION)
2687 else if (s->version == TLS1_1_VERSION)
2689 else if (s->version == TLS1_VERSION)
2691 else if (s->version == SSL3_VERSION)
2693 else if (s->version == DTLS1_BAD_VER)
2694 return ("DTLSv0.9");
2695 else if (s->version == DTLS1_VERSION)
2697 else if (s->version == DTLS1_2_VERSION)
2698 return ("DTLSv1.2");
2703 SSL *SSL_dup(SSL *s)
2705 STACK_OF(X509_NAME) *sk;
2710 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2713 ret->version = s->version;
2714 ret->type = s->type;
2715 ret->method = s->method;
2717 if (s->session != NULL) {
2718 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2719 if (!SSL_copy_session_id(ret, s))
2723 * No session has been established yet, so we have to expect that
2724 * s->cert or ret->cert will be changed later -- they should not both
2725 * point to the same object, and thus we can't use
2726 * SSL_copy_session_id.
2729 ret->method->ssl_free(ret);
2730 ret->method = s->method;
2731 ret->method->ssl_new(ret);
2733 if (s->cert != NULL) {
2734 ssl_cert_free(ret->cert);
2735 ret->cert = ssl_cert_dup(s->cert);
2736 if (ret->cert == NULL)
2740 if (!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
2744 ret->options = s->options;
2745 ret->mode = s->mode;
2746 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2747 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2748 ret->msg_callback = s->msg_callback;
2749 ret->msg_callback_arg = s->msg_callback_arg;
2750 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2751 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2752 ret->generate_session_id = s->generate_session_id;
2754 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2756 ret->debug = s->debug;
2758 /* copy app data, a little dangerous perhaps */
2759 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2762 /* setup rbio, and wbio */
2763 if (s->rbio != NULL) {
2764 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2767 if (s->wbio != NULL) {
2768 if (s->wbio != s->rbio) {
2769 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2772 ret->wbio = ret->rbio;
2774 ret->rwstate = s->rwstate;
2775 ret->in_handshake = s->in_handshake;
2776 ret->handshake_func = s->handshake_func;
2777 ret->server = s->server;
2778 ret->renegotiate = s->renegotiate;
2779 ret->new_session = s->new_session;
2780 ret->quiet_shutdown = s->quiet_shutdown;
2781 ret->shutdown = s->shutdown;
2782 ret->state = s->state; /* SSL_dup does not really work at any state,
2784 RECORD_LAYER_dup(&ret->rlayer, &s->rlayer);
2785 ret->init_num = 0; /* would have to copy ret->init_buf,
2786 * ret->init_msg, ret->init_num,
2790 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2792 /* dup the cipher_list and cipher_list_by_id stacks */
2793 if (s->cipher_list != NULL) {
2794 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2797 if (s->cipher_list_by_id != NULL)
2798 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2802 /* Dup the client_CA list */
2803 if (s->client_CA != NULL) {
2804 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2806 ret->client_CA = sk;
2807 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2808 xn = sk_X509_NAME_value(sk, i);
2809 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2822 void ssl_clear_cipher_ctx(SSL *s)
2824 if (s->enc_read_ctx != NULL) {
2825 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2826 OPENSSL_free(s->enc_read_ctx);
2827 s->enc_read_ctx = NULL;
2829 if (s->enc_write_ctx != NULL) {
2830 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2831 OPENSSL_free(s->enc_write_ctx);
2832 s->enc_write_ctx = NULL;
2834 #ifndef OPENSSL_NO_COMP
2835 COMP_CTX_free(s->expand);
2837 COMP_CTX_free(s->compress);
2842 X509 *SSL_get_certificate(const SSL *s)
2844 if (s->cert != NULL)
2845 return (s->cert->key->x509);
2850 EVP_PKEY *SSL_get_privatekey(const SSL *s)
2852 if (s->cert != NULL)
2853 return (s->cert->key->privatekey);
2858 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2860 if (ctx->cert != NULL)
2861 return ctx->cert->key->x509;
2866 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2868 if (ctx->cert != NULL)
2869 return ctx->cert->key->privatekey;
2874 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2876 if ((s->session != NULL) && (s->session->cipher != NULL))
2877 return (s->session->cipher);
2881 #ifdef OPENSSL_NO_COMP
2882 const void *SSL_get_current_compression(SSL *s)
2887 const void *SSL_get_current_expansion(SSL *s)
2893 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2895 if (s->compress != NULL)
2896 return (s->compress->meth);
2900 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2902 if (s->expand != NULL)
2903 return (s->expand->meth);
2908 int ssl_init_wbio_buffer(SSL *s, int push)
2912 if (s->bbio == NULL) {
2913 bbio = BIO_new(BIO_f_buffer());
2919 if (s->bbio == s->wbio)
2920 s->wbio = BIO_pop(s->wbio);
2922 (void)BIO_reset(bbio);
2923 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2924 if (!BIO_set_read_buffer_size(bbio, 1)) {
2925 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
2929 if (s->wbio != bbio)
2930 s->wbio = BIO_push(bbio, s->wbio);
2932 if (s->wbio == bbio)
2933 s->wbio = BIO_pop(bbio);
2938 void ssl_free_wbio_buffer(SSL *s)
2940 /* callers ensure s is never null */
2941 if (s->bbio == NULL)
2944 if (s->bbio == s->wbio) {
2945 /* remove buffering */
2946 s->wbio = BIO_pop(s->wbio);
2947 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
2948 * adding one more preprocessor symbol */
2949 assert(s->wbio != NULL);
2956 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
2958 ctx->quiet_shutdown = mode;
2961 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2963 return (ctx->quiet_shutdown);
2966 void SSL_set_quiet_shutdown(SSL *s, int mode)
2968 s->quiet_shutdown = mode;
2971 int SSL_get_quiet_shutdown(const SSL *s)
2973 return (s->quiet_shutdown);
2976 void SSL_set_shutdown(SSL *s, int mode)
2981 int SSL_get_shutdown(const SSL *s)
2983 return (s->shutdown);
2986 int SSL_version(const SSL *s)
2988 return (s->version);
2991 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2996 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
2999 if (ssl->ctx == ctx)
3001 #ifndef OPENSSL_NO_TLSEXT
3003 ctx = ssl->initial_ctx;
3005 new_cert = ssl_cert_dup(ctx->cert);
3006 if (new_cert == NULL) {
3009 /* Preserve any already negotiated parameters */
3011 new_cert->peer_sigalgs = ssl->cert->peer_sigalgs;
3012 new_cert->peer_sigalgslen = ssl->cert->peer_sigalgslen;
3013 ssl->cert->peer_sigalgs = NULL;
3014 new_cert->ciphers_raw = ssl->cert->ciphers_raw;
3015 new_cert->ciphers_rawlen = ssl->cert->ciphers_rawlen;
3016 ssl->cert->ciphers_raw = NULL;
3018 ssl_cert_free(ssl->cert);
3019 ssl->cert = new_cert;
3022 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3023 * so setter APIs must prevent invalid lengths from entering the system.
3025 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3028 * If the session ID context matches that of the parent SSL_CTX,
3029 * inherit it from the new SSL_CTX as well. If however the context does
3030 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3031 * leave it unchanged.
3033 if ((ssl->ctx != NULL) &&
3034 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3035 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3036 ssl->sid_ctx_length = ctx->sid_ctx_length;
3037 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3040 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3041 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3047 #ifndef OPENSSL_NO_STDIO
3048 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3050 return (X509_STORE_set_default_paths(ctx->cert_store));
3053 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3056 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3060 void SSL_set_info_callback(SSL *ssl,
3061 void (*cb) (const SSL *ssl, int type, int val))
3063 ssl->info_callback = cb;
3067 * One compiler (Diab DCC) doesn't like argument names in returned function
3070 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3073 return ssl->info_callback;
3076 int SSL_state(const SSL *ssl)
3078 return (ssl->state);
3081 void SSL_set_state(SSL *ssl, int state)
3086 void SSL_set_verify_result(SSL *ssl, long arg)
3088 ssl->verify_result = arg;
3091 long SSL_get_verify_result(const SSL *ssl)
3093 return (ssl->verify_result);
3096 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3097 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3099 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3100 new_func, dup_func, free_func);
3103 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3105 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3108 void *SSL_get_ex_data(const SSL *s, int idx)
3110 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3113 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3114 CRYPTO_EX_dup *dup_func,
3115 CRYPTO_EX_free *free_func)
3117 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3118 new_func, dup_func, free_func);
3121 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3123 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3126 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3128 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3136 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3138 return (ctx->cert_store);
3141 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3143 X509_STORE_free(ctx->cert_store);
3144 ctx->cert_store = store;
3147 int SSL_want(const SSL *s)
3149 return (s->rwstate);
3153 * \brief Set the callback for generating temporary RSA keys.
3154 * \param ctx the SSL context.
3155 * \param cb the callback
3158 #ifndef OPENSSL_NO_RSA
3159 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3163 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3166 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3170 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3176 * \brief The RSA temporary key callback function.
3177 * \param ssl the SSL session.
3178 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3179 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3180 * of the required key in bits.
3181 * \return the temporary RSA key.
3182 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3185 RSA *cb(SSL *ssl, int is_export, int keylength)
3191 * \brief Set the callback for generating temporary DH keys.
3192 * \param ctx the SSL context.
3193 * \param dh the callback
3196 #ifndef OPENSSL_NO_DH
3197 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3198 DH *(*dh) (SSL *ssl, int is_export,
3201 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3204 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3207 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3211 #ifndef OPENSSL_NO_EC
3212 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3213 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3216 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3217 (void (*)(void))ecdh);
3220 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3221 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3224 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3228 #ifndef OPENSSL_NO_PSK
3229 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3231 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3232 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3233 SSL_R_DATA_LENGTH_TOO_LONG);
3236 OPENSSL_free(ctx->psk_identity_hint);
3237 if (identity_hint != NULL) {
3238 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3239 if (ctx->psk_identity_hint == NULL)
3242 ctx->psk_identity_hint = NULL;
3246 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3251 if (s->session == NULL)
3252 return 1; /* session not created yet, ignored */
3254 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3255 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3258 OPENSSL_free(s->session->psk_identity_hint);
3259 if (identity_hint != NULL) {
3260 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3261 if (s->session->psk_identity_hint == NULL)
3264 s->session->psk_identity_hint = NULL;
3268 const char *SSL_get_psk_identity_hint(const SSL *s)
3270 if (s == NULL || s->session == NULL)
3272 return (s->session->psk_identity_hint);
3275 const char *SSL_get_psk_identity(const SSL *s)
3277 if (s == NULL || s->session == NULL)
3279 return (s->session->psk_identity);
3282 void SSL_set_psk_client_callback(SSL *s,
3283 unsigned int (*cb) (SSL *ssl,
3292 s->psk_client_callback = cb;
3295 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3296 unsigned int (*cb) (SSL *ssl,
3305 ctx->psk_client_callback = cb;
3308 void SSL_set_psk_server_callback(SSL *s,
3309 unsigned int (*cb) (SSL *ssl,
3310 const char *identity,
3315 s->psk_server_callback = cb;
3318 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3319 unsigned int (*cb) (SSL *ssl,
3320 const char *identity,
3325 ctx->psk_server_callback = cb;
3329 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3330 void (*cb) (int write_p, int version,
3331 int content_type, const void *buf,
3332 size_t len, SSL *ssl, void *arg))
3334 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3337 void SSL_set_msg_callback(SSL *ssl,
3338 void (*cb) (int write_p, int version,
3339 int content_type, const void *buf,
3340 size_t len, SSL *ssl, void *arg))
3342 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3345 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3346 int (*cb) (SSL *ssl,
3350 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3351 (void (*)(void))cb);
3354 void SSL_set_not_resumable_session_callback(SSL *ssl,
3355 int (*cb) (SSL *ssl,
3356 int is_forward_secure))
3358 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3359 (void (*)(void))cb);
3363 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3364 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3365 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3369 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3371 ssl_clear_hash_ctx(hash);
3372 *hash = EVP_MD_CTX_create();
3374 EVP_DigestInit_ex(*hash, md, NULL);
3378 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3382 EVP_MD_CTX_destroy(*hash);
3386 /* Retrieve handshake hashes */
3387 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3389 unsigned char *p = out;
3394 EVP_MD_CTX_init(&ctx);
3395 for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
3396 if (mask & ssl_get_algorithm2(s)) {
3397 int hashsize = EVP_MD_size(md);
3398 EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
3399 if (!hdgst || hashsize < 0 || hashsize > outlen)
3401 if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
3403 if (!EVP_DigestFinal_ex(&ctx, p, NULL))
3411 EVP_MD_CTX_cleanup(&ctx);
3415 void SSL_set_debug(SSL *s, int debug)
3420 int SSL_cache_hit(SSL *s)
3425 int SSL_is_server(SSL *s)
3430 void SSL_set_security_level(SSL *s, int level)
3432 s->cert->sec_level = level;
3435 int SSL_get_security_level(const SSL *s)
3437 return s->cert->sec_level;
3440 void SSL_set_security_callback(SSL *s,
3441 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3442 int bits, int nid, void *other,
3445 s->cert->sec_cb = cb;
3448 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3450 void *other, void *ex) {
3451 return s->cert->sec_cb;
3454 void SSL_set0_security_ex_data(SSL *s, void *ex)
3456 s->cert->sec_ex = ex;
3459 void *SSL_get0_security_ex_data(const SSL *s)
3461 return s->cert->sec_ex;
3464 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3466 ctx->cert->sec_level = level;
3469 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3471 return ctx->cert->sec_level;
3474 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3475 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3476 int bits, int nid, void *other,
3479 ctx->cert->sec_cb = cb;
3482 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3488 return ctx->cert->sec_cb;
3491 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3493 ctx->cert->sec_ex = ex;
3496 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3498 return ctx->cert->sec_ex;
3501 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);