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;
218 s->rstate = SSL_ST_READ_HEADER;
220 if (s->init_buf != NULL) {
221 BUF_MEM_free(s->init_buf);
225 ssl_clear_cipher_ctx(s);
226 ssl_clear_hash_ctx(&s->read_hash);
227 ssl_clear_hash_ctx(&s->write_hash);
232 * Check to see if we were changed into a different method, if so, revert
233 * back if we are not doing session-id reuse.
235 if (!s->in_handshake && (s->session == NULL)
236 && (s->method != s->ctx->method)) {
237 s->method->ssl_free(s);
238 s->method = s->ctx->method;
239 if (!s->method->ssl_new(s))
242 s->method->ssl_clear(s);
244 RECORD_LAYER_clear(&s->rlayer);
249 /** Used to change an SSL_CTXs default SSL method type */
250 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
252 STACK_OF(SSL_CIPHER) *sk;
256 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
257 &(ctx->cipher_list_by_id),
258 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
259 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
260 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
261 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
267 SSL *SSL_new(SSL_CTX *ctx)
272 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
275 if (ctx->method == NULL) {
276 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
280 s = (SSL *)OPENSSL_malloc(sizeof(SSL));
283 memset(s, 0, sizeof(SSL));
285 RECORD_LAYER_set_ssl(&s->rlayer, s);
286 SSL3_RECORD_clear(RECORD_LAYER_get_rrec(&s->rlayer));
287 SSL3_RECORD_clear(RECORD_LAYER_get_wrec(&s->rlayer));
289 #ifndef OPENSSL_NO_KRB5
290 s->kssl_ctx = kssl_ctx_new();
291 #endif /* OPENSSL_NO_KRB5 */
293 s->options = ctx->options;
295 s->max_cert_list = ctx->max_cert_list;
298 * Earlier library versions used to copy the pointer to the CERT, not
299 * its contents; only when setting new parameters for the per-SSL
300 * copy, ssl_cert_new would be called (and the direct reference to
301 * the per-SSL_CTX settings would be lost, but those still were
302 * indirectly accessed for various purposes, and for that reason they
303 * used to be known as s->ctx->default_cert). Now we don't look at the
304 * SSL_CTX's CERT after having duplicated it once.
306 s->cert = ssl_cert_dup(ctx->cert);
310 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
311 s->msg_callback = ctx->msg_callback;
312 s->msg_callback_arg = ctx->msg_callback_arg;
313 s->verify_mode = ctx->verify_mode;
314 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
315 s->sid_ctx_length = ctx->sid_ctx_length;
316 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
317 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
318 s->verify_callback = ctx->default_verify_callback;
319 s->generate_session_id = ctx->generate_session_id;
321 s->param = X509_VERIFY_PARAM_new();
324 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
325 s->quiet_shutdown = ctx->quiet_shutdown;
326 s->max_send_fragment = ctx->max_send_fragment;
328 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
330 #ifndef OPENSSL_NO_TLSEXT
331 s->tlsext_debug_cb = 0;
332 s->tlsext_debug_arg = NULL;
333 s->tlsext_ticket_expected = 0;
334 s->tlsext_status_type = -1;
335 s->tlsext_status_expected = 0;
336 s->tlsext_ocsp_ids = NULL;
337 s->tlsext_ocsp_exts = NULL;
338 s->tlsext_ocsp_resp = NULL;
339 s->tlsext_ocsp_resplen = -1;
340 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
341 s->initial_ctx = ctx;
342 # ifndef OPENSSL_NO_EC
343 if (ctx->tlsext_ecpointformatlist) {
344 s->tlsext_ecpointformatlist =
345 BUF_memdup(ctx->tlsext_ecpointformatlist,
346 ctx->tlsext_ecpointformatlist_length);
347 if (!s->tlsext_ecpointformatlist)
349 s->tlsext_ecpointformatlist_length =
350 ctx->tlsext_ecpointformatlist_length;
352 if (ctx->tlsext_ellipticcurvelist) {
353 s->tlsext_ellipticcurvelist =
354 BUF_memdup(ctx->tlsext_ellipticcurvelist,
355 ctx->tlsext_ellipticcurvelist_length);
356 if (!s->tlsext_ellipticcurvelist)
358 s->tlsext_ellipticcurvelist_length =
359 ctx->tlsext_ellipticcurvelist_length;
362 # ifndef OPENSSL_NO_NEXTPROTONEG
363 s->next_proto_negotiated = NULL;
366 if (s->ctx->alpn_client_proto_list) {
367 s->alpn_client_proto_list =
368 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
369 if (s->alpn_client_proto_list == NULL)
371 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
372 s->ctx->alpn_client_proto_list_len);
373 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
377 s->verify_result = X509_V_OK;
379 s->method = ctx->method;
381 if (!s->method->ssl_new(s))
385 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
390 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
392 #ifndef OPENSSL_NO_PSK
393 s->psk_client_callback = ctx->psk_client_callback;
394 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");
540 X509_VERIFY_PARAM_free(s->param);
542 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
544 if (s->bbio != NULL) {
545 /* If the buffering BIO is in place, pop it off */
546 if (s->bbio == s->wbio) {
547 s->wbio = BIO_pop(s->wbio);
552 BIO_free_all(s->rbio);
553 if (s->wbio != s->rbio)
554 BIO_free_all(s->wbio);
556 if (s->init_buf != NULL)
557 BUF_MEM_free(s->init_buf);
559 /* add extra stuff */
560 if (s->cipher_list != NULL)
561 sk_SSL_CIPHER_free(s->cipher_list);
562 if (s->cipher_list_by_id != NULL)
563 sk_SSL_CIPHER_free(s->cipher_list_by_id);
565 /* Make the next call work :-) */
566 if (s->session != NULL) {
567 ssl_clear_bad_session(s);
568 SSL_SESSION_free(s->session);
571 ssl_clear_cipher_ctx(s);
572 ssl_clear_hash_ctx(&s->read_hash);
573 ssl_clear_hash_ctx(&s->write_hash);
576 ssl_cert_free(s->cert);
577 /* Free up if allocated */
579 #ifndef OPENSSL_NO_TLSEXT
580 if (s->tlsext_hostname)
581 OPENSSL_free(s->tlsext_hostname);
583 SSL_CTX_free(s->initial_ctx);
584 # ifndef OPENSSL_NO_EC
585 if (s->tlsext_ecpointformatlist)
586 OPENSSL_free(s->tlsext_ecpointformatlist);
587 if (s->tlsext_ellipticcurvelist)
588 OPENSSL_free(s->tlsext_ellipticcurvelist);
589 # endif /* OPENSSL_NO_EC */
590 if (s->tlsext_ocsp_exts)
591 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
592 if (s->tlsext_ocsp_ids)
593 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
594 if (s->tlsext_ocsp_resp)
595 OPENSSL_free(s->tlsext_ocsp_resp);
596 if (s->alpn_client_proto_list)
597 OPENSSL_free(s->alpn_client_proto_list);
600 if (s->client_CA != NULL)
601 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
603 if (s->method != NULL)
604 s->method->ssl_free(s);
606 if (SSL3_BUFFER_is_initialised(RECORD_LAYER_get_rbuf(&s->rlayer)))
607 ssl3_release_read_buffer(s);
608 if (SSL3_BUFFER_is_initialised(RECORD_LAYER_get_wbuf(&s->rlayer)))
609 ssl3_release_write_buffer(s);
610 SSL3_RECORD_release(RECORD_LAYER_get_rrec(&s->rlayer));
613 SSL_CTX_free(s->ctx);
615 #ifndef OPENSSL_NO_KRB5
616 if (s->kssl_ctx != NULL)
617 kssl_ctx_free(s->kssl_ctx);
618 #endif /* OPENSSL_NO_KRB5 */
620 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
621 if (s->next_proto_negotiated)
622 OPENSSL_free(s->next_proto_negotiated);
625 #ifndef OPENSSL_NO_SRTP
626 if (s->srtp_profiles)
627 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
633 void SSL_set_rbio(SSL *s, BIO *rbio)
636 BIO_free_all(s->rbio);
640 void SSL_set_wbio(SSL *s, BIO *wbio)
643 * If the output buffering BIO is still in place, remove it
645 if (s->bbio != NULL) {
646 if (s->wbio == s->bbio) {
647 s->wbio = s->wbio->next_bio;
648 s->bbio->next_bio = NULL;
651 if (s->wbio != wbio && s->rbio != s->wbio)
652 BIO_free_all(s->wbio);
656 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
658 SSL_set_wbio(s, wbio);
659 SSL_set_rbio(s, rbio);
662 BIO *SSL_get_rbio(const SSL *s)
667 BIO *SSL_get_wbio(const SSL *s)
672 int SSL_get_fd(const SSL *s)
674 return (SSL_get_rfd(s));
677 int SSL_get_rfd(const SSL *s)
683 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
689 int SSL_get_wfd(const SSL *s)
695 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
701 #ifndef OPENSSL_NO_SOCK
702 int SSL_set_fd(SSL *s, int fd)
707 bio = BIO_new(BIO_s_socket());
710 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
713 BIO_set_fd(bio, fd, BIO_NOCLOSE);
714 SSL_set_bio(s, bio, bio);
720 int SSL_set_wfd(SSL *s, int fd)
725 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
726 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
727 bio = BIO_new(BIO_s_socket());
730 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
733 BIO_set_fd(bio, fd, BIO_NOCLOSE);
734 SSL_set_bio(s, SSL_get_rbio(s), bio);
736 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
742 int SSL_set_rfd(SSL *s, int fd)
747 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
748 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
749 bio = BIO_new(BIO_s_socket());
752 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
755 BIO_set_fd(bio, fd, BIO_NOCLOSE);
756 SSL_set_bio(s, bio, SSL_get_wbio(s));
758 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
765 /* return length of latest Finished message we sent, copy to 'buf' */
766 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
771 ret = s->s3->tmp.finish_md_len;
774 memcpy(buf, s->s3->tmp.finish_md, count);
779 /* return length of latest Finished message we expected, copy to 'buf' */
780 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
785 ret = s->s3->tmp.peer_finish_md_len;
788 memcpy(buf, s->s3->tmp.peer_finish_md, count);
793 int SSL_get_verify_mode(const SSL *s)
795 return (s->verify_mode);
798 int SSL_get_verify_depth(const SSL *s)
800 return X509_VERIFY_PARAM_get_depth(s->param);
803 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
804 return (s->verify_callback);
807 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
809 return (ctx->verify_mode);
812 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
814 return X509_VERIFY_PARAM_get_depth(ctx->param);
817 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
818 return (ctx->default_verify_callback);
821 void SSL_set_verify(SSL *s, int mode,
822 int (*callback) (int ok, X509_STORE_CTX *ctx))
824 s->verify_mode = mode;
825 if (callback != NULL)
826 s->verify_callback = callback;
829 void SSL_set_verify_depth(SSL *s, int depth)
831 X509_VERIFY_PARAM_set_depth(s->param, depth);
834 void SSL_set_read_ahead(SSL *s, int yes)
836 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
839 int SSL_get_read_ahead(const SSL *s)
841 return RECORD_LAYER_get_read_ahead(&s->rlayer);
844 int SSL_pending(const SSL *s)
847 * SSL_pending cannot work properly if read-ahead is enabled
848 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
849 * impossible to fix since SSL_pending cannot report errors that may be
850 * observed while scanning the new data. (Note that SSL_pending() is
851 * often used as a boolean value, so we'd better not return -1.)
853 return (s->method->ssl_pending(s));
856 X509 *SSL_get_peer_certificate(const SSL *s)
860 if ((s == NULL) || (s->session == NULL))
863 r = s->session->peer;
868 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
873 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
877 if ((s == NULL) || (s->session == NULL)
878 || (s->session->sess_cert == NULL))
881 r = s->session->sess_cert->cert_chain;
884 * If we are a client, cert_chain includes the peer's own certificate; if
885 * we are a server, it does not.
892 * Now in theory, since the calling process own 't' it should be safe to
893 * modify. We need to be able to read f without being hassled
895 int SSL_copy_session_id(SSL *t, const SSL *f)
897 /* Do we need to to SSL locking? */
898 if(!SSL_set_session(t, SSL_get_session(f))) {
903 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
905 if (t->method != f->method) {
906 t->method->ssl_free(t); /* cleanup current */
907 t->method = f->method; /* change method */
908 t->method->ssl_new(t); /* setup new */
911 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
912 ssl_cert_free(t->cert);
914 if(!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
921 /* Fix this so it checks all the valid key/cert options */
922 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
925 (ctx->cert->key->x509 == NULL)) {
926 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
927 SSL_R_NO_CERTIFICATE_ASSIGNED);
930 if (ctx->cert->key->privatekey == NULL) {
931 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
932 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
935 return (X509_check_private_key
936 (ctx->cert->key->x509, ctx->cert->key->privatekey));
939 /* Fix this function so that it takes an optional type parameter */
940 int SSL_check_private_key(const SSL *ssl)
943 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
946 if (ssl->cert->key->x509 == NULL) {
947 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
950 if (ssl->cert->key->privatekey == NULL) {
951 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
954 return (X509_check_private_key(ssl->cert->key->x509,
955 ssl->cert->key->privatekey));
958 int SSL_accept(SSL *s)
960 if (s->handshake_func == 0)
961 /* Not properly initialized yet */
962 SSL_set_accept_state(s);
964 return (s->method->ssl_accept(s));
967 int SSL_connect(SSL *s)
969 if (s->handshake_func == 0)
970 /* Not properly initialized yet */
971 SSL_set_connect_state(s);
973 return (s->method->ssl_connect(s));
976 long SSL_get_default_timeout(const SSL *s)
978 return (s->method->get_timeout());
981 int SSL_read(SSL *s, void *buf, int num)
983 if (s->handshake_func == 0) {
984 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
988 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
989 s->rwstate = SSL_NOTHING;
992 return (s->method->ssl_read(s, buf, num));
995 int SSL_peek(SSL *s, void *buf, int num)
997 if (s->handshake_func == 0) {
998 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1002 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1005 return (s->method->ssl_peek(s, buf, num));
1008 int SSL_write(SSL *s, const void *buf, int num)
1010 if (s->handshake_func == 0) {
1011 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1015 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1016 s->rwstate = SSL_NOTHING;
1017 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1020 return (s->method->ssl_write(s, buf, num));
1023 int SSL_shutdown(SSL *s)
1026 * Note that this function behaves differently from what one might
1027 * expect. Return values are 0 for no success (yet), 1 for success; but
1028 * calling it once is usually not enough, even if blocking I/O is used
1029 * (see ssl3_shutdown).
1032 if (s->handshake_func == 0) {
1033 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1037 if ((s != NULL) && !SSL_in_init(s))
1038 return (s->method->ssl_shutdown(s));
1043 int SSL_renegotiate(SSL *s)
1045 if (s->renegotiate == 0)
1050 return (s->method->ssl_renegotiate(s));
1053 int SSL_renegotiate_abbreviated(SSL *s)
1055 if (s->renegotiate == 0)
1060 return (s->method->ssl_renegotiate(s));
1063 int SSL_renegotiate_pending(SSL *s)
1066 * becomes true when negotiation is requested; false again once a
1067 * handshake has finished
1069 return (s->renegotiate != 0);
1072 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1077 case SSL_CTRL_GET_READ_AHEAD:
1078 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1079 case SSL_CTRL_SET_READ_AHEAD:
1080 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1081 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1084 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1085 s->msg_callback_arg = parg;
1088 case SSL_CTRL_OPTIONS:
1089 return (s->options |= larg);
1090 case SSL_CTRL_CLEAR_OPTIONS:
1091 return (s->options &= ~larg);
1093 return (s->mode |= larg);
1094 case SSL_CTRL_CLEAR_MODE:
1095 return (s->mode &= ~larg);
1096 case SSL_CTRL_GET_MAX_CERT_LIST:
1097 return (s->max_cert_list);
1098 case SSL_CTRL_SET_MAX_CERT_LIST:
1099 l = s->max_cert_list;
1100 s->max_cert_list = larg;
1102 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1103 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1105 s->max_send_fragment = larg;
1107 case SSL_CTRL_GET_RI_SUPPORT:
1109 return s->s3->send_connection_binding;
1112 case SSL_CTRL_CERT_FLAGS:
1113 return (s->cert->cert_flags |= larg);
1114 case SSL_CTRL_CLEAR_CERT_FLAGS:
1115 return (s->cert->cert_flags &= ~larg);
1117 case SSL_CTRL_GET_RAW_CIPHERLIST:
1119 if (s->cert->ciphers_raw == NULL)
1121 *(unsigned char **)parg = s->cert->ciphers_raw;
1122 return (int)s->cert->ciphers_rawlen;
1124 return ssl_put_cipher_by_char(s, NULL, NULL);
1125 case SSL_CTRL_GET_EXTMS_SUPPORT:
1126 if (!s->session || SSL_in_init(s) || s->in_handshake)
1128 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1133 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1137 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1140 case SSL_CTRL_SET_MSG_CALLBACK:
1141 s->msg_callback = (void (*)
1142 (int write_p, int version, int content_type,
1143 const void *buf, size_t len, SSL *ssl,
1148 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1152 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1154 return ctx->sessions;
1157 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1160 /* For some cases with ctx == NULL perform syntax checks */
1163 #ifndef OPENSSL_NO_EC
1164 case SSL_CTRL_SET_CURVES_LIST:
1165 return tls1_set_curves_list(NULL, NULL, parg);
1167 case SSL_CTRL_SET_SIGALGS_LIST:
1168 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1169 return tls1_set_sigalgs_list(NULL, parg, 0);
1176 case SSL_CTRL_GET_READ_AHEAD:
1177 return (ctx->read_ahead);
1178 case SSL_CTRL_SET_READ_AHEAD:
1179 l = ctx->read_ahead;
1180 ctx->read_ahead = larg;
1183 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1184 ctx->msg_callback_arg = parg;
1187 case SSL_CTRL_GET_MAX_CERT_LIST:
1188 return (ctx->max_cert_list);
1189 case SSL_CTRL_SET_MAX_CERT_LIST:
1190 l = ctx->max_cert_list;
1191 ctx->max_cert_list = larg;
1194 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1195 l = ctx->session_cache_size;
1196 ctx->session_cache_size = larg;
1198 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1199 return (ctx->session_cache_size);
1200 case SSL_CTRL_SET_SESS_CACHE_MODE:
1201 l = ctx->session_cache_mode;
1202 ctx->session_cache_mode = larg;
1204 case SSL_CTRL_GET_SESS_CACHE_MODE:
1205 return (ctx->session_cache_mode);
1207 case SSL_CTRL_SESS_NUMBER:
1208 return (lh_SSL_SESSION_num_items(ctx->sessions));
1209 case SSL_CTRL_SESS_CONNECT:
1210 return (ctx->stats.sess_connect);
1211 case SSL_CTRL_SESS_CONNECT_GOOD:
1212 return (ctx->stats.sess_connect_good);
1213 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1214 return (ctx->stats.sess_connect_renegotiate);
1215 case SSL_CTRL_SESS_ACCEPT:
1216 return (ctx->stats.sess_accept);
1217 case SSL_CTRL_SESS_ACCEPT_GOOD:
1218 return (ctx->stats.sess_accept_good);
1219 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1220 return (ctx->stats.sess_accept_renegotiate);
1221 case SSL_CTRL_SESS_HIT:
1222 return (ctx->stats.sess_hit);
1223 case SSL_CTRL_SESS_CB_HIT:
1224 return (ctx->stats.sess_cb_hit);
1225 case SSL_CTRL_SESS_MISSES:
1226 return (ctx->stats.sess_miss);
1227 case SSL_CTRL_SESS_TIMEOUTS:
1228 return (ctx->stats.sess_timeout);
1229 case SSL_CTRL_SESS_CACHE_FULL:
1230 return (ctx->stats.sess_cache_full);
1231 case SSL_CTRL_OPTIONS:
1232 return (ctx->options |= larg);
1233 case SSL_CTRL_CLEAR_OPTIONS:
1234 return (ctx->options &= ~larg);
1236 return (ctx->mode |= larg);
1237 case SSL_CTRL_CLEAR_MODE:
1238 return (ctx->mode &= ~larg);
1239 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1240 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1242 ctx->max_send_fragment = larg;
1244 case SSL_CTRL_CERT_FLAGS:
1245 return (ctx->cert->cert_flags |= larg);
1246 case SSL_CTRL_CLEAR_CERT_FLAGS:
1247 return (ctx->cert->cert_flags &= ~larg);
1249 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1253 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1256 case SSL_CTRL_SET_MSG_CALLBACK:
1257 ctx->msg_callback = (void (*)
1258 (int write_p, int version, int content_type,
1259 const void *buf, size_t len, SSL *ssl,
1264 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1268 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1276 return ((l > 0) ? 1 : -1);
1279 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1280 const SSL_CIPHER *const *bp)
1284 l = (*ap)->id - (*bp)->id;
1288 return ((l > 0) ? 1 : -1);
1291 /** return a STACK of the ciphers available for the SSL and in order of
1293 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1296 if (s->cipher_list != NULL) {
1297 return (s->cipher_list);
1298 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1299 return (s->ctx->cipher_list);
1305 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1307 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1309 ciphers = SSL_get_ciphers(s);
1312 ssl_set_client_disabled(s);
1313 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1314 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1315 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1317 sk = sk_SSL_CIPHER_new_null();
1320 if (!sk_SSL_CIPHER_push(sk, c)) {
1321 sk_SSL_CIPHER_free(sk);
1329 /** return a STACK of the ciphers available for the SSL and in order of
1331 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1334 if (s->cipher_list_by_id != NULL) {
1335 return (s->cipher_list_by_id);
1336 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1337 return (s->ctx->cipher_list_by_id);
1343 /** The old interface to get the same thing as SSL_get_ciphers() */
1344 const char *SSL_get_cipher_list(const SSL *s, int n)
1347 STACK_OF(SSL_CIPHER) *sk;
1351 sk = SSL_get_ciphers(s);
1352 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1354 c = sk_SSL_CIPHER_value(sk, n);
1360 /** specify the ciphers to be used by default by the SSL_CTX */
1361 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1363 STACK_OF(SSL_CIPHER) *sk;
1365 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1366 &ctx->cipher_list_by_id, str, ctx->cert);
1368 * ssl_create_cipher_list may return an empty stack if it was unable to
1369 * find a cipher matching the given rule string (for example if the rule
1370 * string specifies a cipher which has been disabled). This is not an
1371 * error as far as ssl_create_cipher_list is concerned, and hence
1372 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1376 else if (sk_SSL_CIPHER_num(sk) == 0) {
1377 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1383 /** specify the ciphers to be used by the SSL */
1384 int SSL_set_cipher_list(SSL *s, const char *str)
1386 STACK_OF(SSL_CIPHER) *sk;
1388 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1389 &s->cipher_list_by_id, str, s->cert);
1390 /* see comment in SSL_CTX_set_cipher_list */
1393 else if (sk_SSL_CIPHER_num(sk) == 0) {
1394 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1400 /* works well for SSLv2, not so good for SSLv3 */
1401 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1404 STACK_OF(SSL_CIPHER) *sk;
1408 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1412 sk = s->session->ciphers;
1414 if (sk_SSL_CIPHER_num(sk) == 0)
1417 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1420 c = sk_SSL_CIPHER_value(sk, i);
1421 n = strlen(c->name);
1437 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1439 int (*put_cb) (const SSL_CIPHER *,
1445 int empty_reneg_info_scsv = !s->renegotiate;
1446 /* Set disabled masks for this session */
1447 ssl_set_client_disabled(s);
1453 put_cb = s->method->put_cipher_by_char;
1455 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1456 c = sk_SSL_CIPHER_value(sk, i);
1457 /* Skip disabled ciphers */
1458 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1460 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1461 if (c->id == SSL3_CK_SCSV) {
1462 if (!empty_reneg_info_scsv)
1465 empty_reneg_info_scsv = 0;
1472 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1476 if (empty_reneg_info_scsv) {
1477 static SSL_CIPHER scsv = {
1478 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1480 j = put_cb(&scsv, p);
1482 #ifdef OPENSSL_RI_DEBUG
1484 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1487 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1488 static SSL_CIPHER scsv = {
1489 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1491 j = put_cb(&scsv, p);
1499 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1501 STACK_OF(SSL_CIPHER) **skp)
1503 const SSL_CIPHER *c;
1504 STACK_OF(SSL_CIPHER) *sk;
1508 s->s3->send_connection_binding = 0;
1510 n = ssl_put_cipher_by_char(s, NULL, NULL);
1511 if (n == 0 || (num % n) != 0) {
1512 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1513 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1516 if ((skp == NULL) || (*skp == NULL))
1517 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1520 sk_SSL_CIPHER_zero(sk);
1523 if (s->cert->ciphers_raw)
1524 OPENSSL_free(s->cert->ciphers_raw);
1525 s->cert->ciphers_raw = BUF_memdup(p, num);
1526 if (s->cert->ciphers_raw == NULL) {
1527 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1530 s->cert->ciphers_rawlen = (size_t)num;
1532 for (i = 0; i < num; i += n) {
1533 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1534 if (s->s3 && (n != 3 || !p[0]) &&
1535 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1536 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1537 /* SCSV fatal if renegotiating */
1538 if (s->renegotiate) {
1539 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1540 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1541 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1544 s->s3->send_connection_binding = 1;
1546 #ifdef OPENSSL_RI_DEBUG
1547 fprintf(stderr, "SCSV received by server\n");
1552 /* Check for TLS_FALLBACK_SCSV */
1553 if ((n != 3 || !p[0]) &&
1554 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1555 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1557 * The SCSV indicates that the client previously tried a higher
1558 * version. Fail if the current version is an unexpected
1561 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1562 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1563 SSL_R_INAPPROPRIATE_FALLBACK);
1565 ssl3_send_alert(s, SSL3_AL_FATAL,
1566 SSL_AD_INAPPROPRIATE_FALLBACK);
1573 c = ssl_get_cipher_by_char(s, p);
1576 if (!sk_SSL_CIPHER_push(sk, c)) {
1577 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1587 if ((skp == NULL) || (*skp == NULL))
1588 sk_SSL_CIPHER_free(sk);
1592 #ifndef OPENSSL_NO_TLSEXT
1593 /** return a servername extension value if provided in Client Hello, or NULL.
1594 * So far, only host_name types are defined (RFC 3546).
1597 const char *SSL_get_servername(const SSL *s, const int type)
1599 if (type != TLSEXT_NAMETYPE_host_name)
1602 return s->session && !s->tlsext_hostname ?
1603 s->session->tlsext_hostname : s->tlsext_hostname;
1606 int SSL_get_servername_type(const SSL *s)
1609 && (!s->tlsext_hostname ? s->session->
1610 tlsext_hostname : s->tlsext_hostname))
1611 return TLSEXT_NAMETYPE_host_name;
1616 * SSL_select_next_proto implements the standard protocol selection. It is
1617 * expected that this function is called from the callback set by
1618 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1619 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1620 * not included in the length. A byte string of length 0 is invalid. No byte
1621 * string may be truncated. The current, but experimental algorithm for
1622 * selecting the protocol is: 1) If the server doesn't support NPN then this
1623 * is indicated to the callback. In this case, the client application has to
1624 * abort the connection or have a default application level protocol. 2) If
1625 * the server supports NPN, but advertises an empty list then the client
1626 * selects the first protcol in its list, but indicates via the API that this
1627 * fallback case was enacted. 3) Otherwise, the client finds the first
1628 * protocol in the server's list that it supports and selects this protocol.
1629 * This is because it's assumed that the server has better information about
1630 * which protocol a client should use. 4) If the client doesn't support any
1631 * of the server's advertised protocols, then this is treated the same as
1632 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1633 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1635 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1636 const unsigned char *server,
1637 unsigned int server_len,
1638 const unsigned char *client,
1639 unsigned int client_len)
1642 const unsigned char *result;
1643 int status = OPENSSL_NPN_UNSUPPORTED;
1646 * For each protocol in server preference order, see if we support it.
1648 for (i = 0; i < server_len;) {
1649 for (j = 0; j < client_len;) {
1650 if (server[i] == client[j] &&
1651 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1652 /* We found a match */
1653 result = &server[i];
1654 status = OPENSSL_NPN_NEGOTIATED;
1664 /* There's no overlap between our protocols and the server's list. */
1666 status = OPENSSL_NPN_NO_OVERLAP;
1669 *out = (unsigned char *)result + 1;
1670 *outlen = result[0];
1674 # ifndef OPENSSL_NO_NEXTPROTONEG
1676 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1677 * client's requested protocol for this connection and returns 0. If the
1678 * client didn't request any protocol, then *data is set to NULL. Note that
1679 * the client can request any protocol it chooses. The value returned from
1680 * this function need not be a member of the list of supported protocols
1681 * provided by the callback.
1683 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1686 *data = s->next_proto_negotiated;
1690 *len = s->next_proto_negotiated_len;
1695 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1696 * a TLS server needs a list of supported protocols for Next Protocol
1697 * Negotiation. The returned list must be in wire format. The list is
1698 * returned by setting |out| to point to it and |outlen| to its length. This
1699 * memory will not be modified, but one should assume that the SSL* keeps a
1700 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1701 * wishes to advertise. Otherwise, no such extension will be included in the
1704 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1705 int (*cb) (SSL *ssl,
1708 unsigned int *outlen,
1709 void *arg), void *arg)
1711 ctx->next_protos_advertised_cb = cb;
1712 ctx->next_protos_advertised_cb_arg = arg;
1716 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1717 * client needs to select a protocol from the server's provided list. |out|
1718 * must be set to point to the selected protocol (which may be within |in|).
1719 * The length of the protocol name must be written into |outlen|. The
1720 * server's advertised protocols are provided in |in| and |inlen|. The
1721 * callback can assume that |in| is syntactically valid. The client must
1722 * select a protocol. It is fatal to the connection if this callback returns
1723 * a value other than SSL_TLSEXT_ERR_OK.
1725 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1726 int (*cb) (SSL *s, unsigned char **out,
1727 unsigned char *outlen,
1728 const unsigned char *in,
1730 void *arg), void *arg)
1732 ctx->next_proto_select_cb = cb;
1733 ctx->next_proto_select_cb_arg = arg;
1738 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1739 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1740 * length-prefixed strings). Returns 0 on success.
1742 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1743 unsigned protos_len)
1745 if (ctx->alpn_client_proto_list)
1746 OPENSSL_free(ctx->alpn_client_proto_list);
1748 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1749 if (!ctx->alpn_client_proto_list)
1751 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1752 ctx->alpn_client_proto_list_len = protos_len;
1758 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1759 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1760 * length-prefixed strings). Returns 0 on success.
1762 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1763 unsigned protos_len)
1765 if (ssl->alpn_client_proto_list)
1766 OPENSSL_free(ssl->alpn_client_proto_list);
1768 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1769 if (!ssl->alpn_client_proto_list)
1771 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1772 ssl->alpn_client_proto_list_len = protos_len;
1778 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1779 * called during ClientHello processing in order to select an ALPN protocol
1780 * from the client's list of offered protocols.
1782 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1783 int (*cb) (SSL *ssl,
1784 const unsigned char **out,
1785 unsigned char *outlen,
1786 const unsigned char *in,
1788 void *arg), void *arg)
1790 ctx->alpn_select_cb = cb;
1791 ctx->alpn_select_cb_arg = arg;
1795 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1796 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1797 * (not including the leading length-prefix byte). If the server didn't
1798 * respond with a negotiated protocol then |*len| will be zero.
1800 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1805 *data = ssl->s3->alpn_selected;
1809 *len = ssl->s3->alpn_selected_len;
1812 #endif /* !OPENSSL_NO_TLSEXT */
1814 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1815 const char *label, size_t llen,
1816 const unsigned char *p, size_t plen,
1819 if (s->version < TLS1_VERSION)
1822 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1827 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1832 ((unsigned int)a->session_id[0]) |
1833 ((unsigned int)a->session_id[1] << 8L) |
1834 ((unsigned long)a->session_id[2] << 16L) |
1835 ((unsigned long)a->session_id[3] << 24L);
1840 * NB: If this function (or indeed the hash function which uses a sort of
1841 * coarser function than this one) is changed, ensure
1842 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1843 * being able to construct an SSL_SESSION that will collide with any existing
1844 * session with a matching session ID.
1846 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1848 if (a->ssl_version != b->ssl_version)
1850 if (a->session_id_length != b->session_id_length)
1852 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1856 * These wrapper functions should remain rather than redeclaring
1857 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1858 * variable. The reason is that the functions aren't static, they're exposed
1861 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1862 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1864 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1866 SSL_CTX *ret = NULL;
1869 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1873 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1874 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1878 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1879 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1882 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1886 memset(ret, 0, sizeof(SSL_CTX));
1890 ret->cert_store = NULL;
1891 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1892 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1893 ret->session_cache_head = NULL;
1894 ret->session_cache_tail = NULL;
1896 /* We take the system default */
1897 ret->session_timeout = meth->get_timeout();
1899 ret->new_session_cb = 0;
1900 ret->remove_session_cb = 0;
1901 ret->get_session_cb = 0;
1902 ret->generate_session_id = 0;
1904 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1906 ret->references = 1;
1907 ret->quiet_shutdown = 0;
1908 ret->info_callback = NULL;
1909 ret->app_verify_callback = 0;
1910 ret->app_verify_arg = NULL;
1911 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1912 ret->read_ahead = 0;
1913 ret->msg_callback = 0;
1914 ret->msg_callback_arg = NULL;
1915 ret->verify_mode = SSL_VERIFY_NONE;
1916 ret->sid_ctx_length = 0;
1917 ret->default_verify_callback = NULL;
1918 if ((ret->cert = ssl_cert_new()) == NULL)
1921 ret->default_passwd_callback = 0;
1922 ret->default_passwd_callback_userdata = NULL;
1923 ret->client_cert_cb = 0;
1924 ret->app_gen_cookie_cb = 0;
1925 ret->app_verify_cookie_cb = 0;
1927 ret->sessions = lh_SSL_SESSION_new();
1928 if (ret->sessions == NULL)
1930 ret->cert_store = X509_STORE_new();
1931 if (ret->cert_store == NULL)
1934 if(!ssl_create_cipher_list(ret->method,
1935 &ret->cipher_list, &ret->cipher_list_by_id,
1936 SSL_DEFAULT_CIPHER_LIST, ret->cert)
1937 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1938 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1942 ret->param = X509_VERIFY_PARAM_new();
1946 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1947 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1950 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1951 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1955 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1958 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1960 ret->extra_certs = NULL;
1961 /* No compression for DTLS */
1962 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1963 ret->comp_methods = SSL_COMP_get_compression_methods();
1965 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1967 #ifndef OPENSSL_NO_TLSEXT
1968 ret->tlsext_servername_callback = 0;
1969 ret->tlsext_servername_arg = NULL;
1970 /* Setup RFC4507 ticket keys */
1971 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1972 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1973 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1974 ret->options |= SSL_OP_NO_TICKET;
1976 ret->tlsext_status_cb = 0;
1977 ret->tlsext_status_arg = NULL;
1979 # ifndef OPENSSL_NO_NEXTPROTONEG
1980 ret->next_protos_advertised_cb = 0;
1981 ret->next_proto_select_cb = 0;
1984 #ifndef OPENSSL_NO_PSK
1985 ret->psk_identity_hint = NULL;
1986 ret->psk_client_callback = NULL;
1987 ret->psk_server_callback = NULL;
1989 #ifndef OPENSSL_NO_SRP
1990 if(!SSL_CTX_SRP_CTX_init(ret))
1993 #ifndef OPENSSL_NO_ENGINE
1994 ret->client_cert_engine = NULL;
1995 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1996 # define eng_strx(x) #x
1997 # define eng_str(x) eng_strx(x)
1998 /* Use specific client engine automatically... ignore errors */
2001 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2004 ENGINE_load_builtin_engines();
2005 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2007 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2013 * Default is to connect to non-RI servers. When RI is more widely
2014 * deployed might change this.
2016 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2020 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2027 void SSL_CTX_free(SSL_CTX *a)
2034 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2036 REF_PRINT("SSL_CTX", a);
2042 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
2048 X509_VERIFY_PARAM_free(a->param);
2051 * Free internal session cache. However: the remove_cb() may reference
2052 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2053 * after the sessions were flushed.
2054 * As the ex_data handling routines might also touch the session cache,
2055 * the most secure solution seems to be: empty (flush) the cache, then
2056 * free ex_data, then finally free the cache.
2057 * (See ticket [openssl.org #212].)
2059 if (a->sessions != NULL)
2060 SSL_CTX_flush_sessions(a, 0);
2062 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2064 if (a->sessions != NULL)
2065 lh_SSL_SESSION_free(a->sessions);
2067 if (a->cert_store != NULL)
2068 X509_STORE_free(a->cert_store);
2069 if (a->cipher_list != NULL)
2070 sk_SSL_CIPHER_free(a->cipher_list);
2071 if (a->cipher_list_by_id != NULL)
2072 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2073 if (a->cert != NULL)
2074 ssl_cert_free(a->cert);
2075 if (a->client_CA != NULL)
2076 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2077 if (a->extra_certs != NULL)
2078 sk_X509_pop_free(a->extra_certs, X509_free);
2079 a->comp_methods = NULL;
2081 #ifndef OPENSSL_NO_SRTP
2082 if (a->srtp_profiles)
2083 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2086 #ifndef OPENSSL_NO_PSK
2087 if (a->psk_identity_hint)
2088 OPENSSL_free(a->psk_identity_hint);
2090 #ifndef OPENSSL_NO_SRP
2091 SSL_CTX_SRP_CTX_free(a);
2093 #ifndef OPENSSL_NO_ENGINE
2094 if (a->client_cert_engine)
2095 ENGINE_finish(a->client_cert_engine);
2098 #ifndef OPENSSL_NO_TLSEXT
2099 # ifndef OPENSSL_NO_EC
2100 if (a->tlsext_ecpointformatlist)
2101 OPENSSL_free(a->tlsext_ecpointformatlist);
2102 if (a->tlsext_ellipticcurvelist)
2103 OPENSSL_free(a->tlsext_ellipticcurvelist);
2104 # endif /* OPENSSL_NO_EC */
2105 if (a->alpn_client_proto_list != NULL)
2106 OPENSSL_free(a->alpn_client_proto_list);
2112 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2114 ctx->default_passwd_callback = cb;
2117 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2119 ctx->default_passwd_callback_userdata = u;
2122 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2123 int (*cb) (X509_STORE_CTX *, void *),
2126 ctx->app_verify_callback = cb;
2127 ctx->app_verify_arg = arg;
2130 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2131 int (*cb) (int, X509_STORE_CTX *))
2133 ctx->verify_mode = mode;
2134 ctx->default_verify_callback = cb;
2137 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2139 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2142 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2145 ssl_cert_set_cert_cb(c->cert, cb, arg);
2148 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2150 ssl_cert_set_cert_cb(s->cert, cb, arg);
2153 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2156 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2157 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2158 int rsa_tmp_export, dh_tmp_export, kl;
2159 unsigned long mask_k, mask_a, emask_k, emask_a;
2160 #ifndef OPENSSL_NO_EC
2161 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2162 int have_ecdh_tmp, ecdh_ok;
2164 EVP_PKEY *ecc_pkey = NULL;
2165 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2170 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2172 #ifndef OPENSSL_NO_RSA
2173 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2174 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2175 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2177 rsa_tmp = rsa_tmp_export = 0;
2179 #ifndef OPENSSL_NO_DH
2180 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2181 dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2183 && DH_size(c->dh_tmp) * 8 <= kl));
2185 dh_tmp = dh_tmp_export = 0;
2188 #ifndef OPENSSL_NO_EC
2189 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2191 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2192 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID;
2193 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2194 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2195 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2196 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2197 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2198 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2199 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID;
2200 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2201 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2202 /* FIX THIS EAY EAY EAY */
2203 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID;
2204 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2205 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2206 #ifndef OPENSSL_NO_EC
2207 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID;
2216 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2217 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2218 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2221 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2222 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2223 mask_k |= SSL_kGOST;
2224 mask_a |= SSL_aGOST01;
2226 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2227 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2228 mask_k |= SSL_kGOST;
2229 mask_a |= SSL_aGOST94;
2232 if (rsa_enc || (rsa_tmp && rsa_sign))
2234 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2235 emask_k |= SSL_kRSA;
2238 emask_k |= SSL_kDHE;
2246 emask_k |= SSL_kDHr;
2251 emask_k |= SSL_kDHd;
2253 if (emask_k & (SSL_kDHr | SSL_kDHd))
2256 if (rsa_enc || rsa_sign) {
2258 emask_a |= SSL_aRSA;
2263 emask_a |= SSL_aDSS;
2266 mask_a |= SSL_aNULL;
2267 emask_a |= SSL_aNULL;
2269 #ifndef OPENSSL_NO_KRB5
2270 mask_k |= SSL_kKRB5;
2271 mask_a |= SSL_aKRB5;
2272 emask_k |= SSL_kKRB5;
2273 emask_a |= SSL_aKRB5;
2277 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2278 * depending on the key usage extension.
2280 #ifndef OPENSSL_NO_EC
2281 if (have_ecc_cert) {
2282 cpk = &c->pkeys[SSL_PKEY_ECC];
2284 /* This call populates extension flags (ex_flags) */
2285 X509_check_purpose(x, -1, 0);
2286 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2287 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2288 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2289 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2290 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2292 ecc_pkey = X509_get_pubkey(x);
2293 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2294 EVP_PKEY_free(ecc_pkey);
2295 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2296 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2297 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2301 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2302 mask_k |= SSL_kECDHr;
2303 mask_a |= SSL_aECDH;
2304 if (ecc_pkey_size <= 163) {
2305 emask_k |= SSL_kECDHr;
2306 emask_a |= SSL_aECDH;
2310 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2311 mask_k |= SSL_kECDHe;
2312 mask_a |= SSL_aECDH;
2313 if (ecc_pkey_size <= 163) {
2314 emask_k |= SSL_kECDHe;
2315 emask_a |= SSL_aECDH;
2320 mask_a |= SSL_aECDSA;
2321 emask_a |= SSL_aECDSA;
2326 #ifndef OPENSSL_NO_EC
2327 if (have_ecdh_tmp) {
2328 mask_k |= SSL_kECDHE;
2329 emask_k |= SSL_kECDHE;
2333 #ifndef OPENSSL_NO_PSK
2336 emask_k |= SSL_kPSK;
2337 emask_a |= SSL_aPSK;
2342 c->export_mask_k = emask_k;
2343 c->export_mask_a = emask_a;
2347 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2348 #define ku_reject(x, usage) \
2349 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2351 #ifndef OPENSSL_NO_EC
2353 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2355 unsigned long alg_k, alg_a;
2356 EVP_PKEY *pkey = NULL;
2358 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2359 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2361 alg_k = cs->algorithm_mkey;
2362 alg_a = cs->algorithm_auth;
2364 if (SSL_C_IS_EXPORT(cs)) {
2365 /* ECDH key length in export ciphers must be <= 163 bits */
2366 pkey = X509_get_pubkey(x);
2369 keysize = EVP_PKEY_bits(pkey);
2370 EVP_PKEY_free(pkey);
2375 /* This call populates the ex_flags field correctly */
2376 X509_check_purpose(x, -1, 0);
2377 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2378 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2379 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2381 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2382 /* key usage, if present, must allow key agreement */
2383 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2384 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2385 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2388 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2389 /* signature alg must be ECDSA */
2390 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2391 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2392 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2396 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2397 /* signature alg must be RSA */
2399 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2400 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2401 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2406 if (alg_a & SSL_aECDSA) {
2407 /* key usage, if present, must allow signing */
2408 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2409 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2410 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2415 return 1; /* all checks are ok */
2420 static int ssl_get_server_cert_index(const SSL *s)
2423 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2424 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2425 idx = SSL_PKEY_RSA_SIGN;
2427 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2431 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2437 if (!s->s3 || !s->s3->tmp.new_cipher)
2439 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2441 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2443 * Broken protocol test: return last used certificate: which may mismatch
2446 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2450 i = ssl_get_server_cert_index(s);
2452 /* This may or may not be an error. */
2457 return &c->pkeys[i];
2460 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2463 unsigned long alg_a;
2467 alg_a = cipher->algorithm_auth;
2470 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2472 * Broken protocol test: use last key: which may mismatch the one
2475 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2476 idx = c->key - c->pkeys;
2480 if ((alg_a & SSL_aDSS) &&
2481 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2482 idx = SSL_PKEY_DSA_SIGN;
2483 else if (alg_a & SSL_aRSA) {
2484 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2485 idx = SSL_PKEY_RSA_SIGN;
2486 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2487 idx = SSL_PKEY_RSA_ENC;
2488 } else if ((alg_a & SSL_aECDSA) &&
2489 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2492 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2496 *pmd = c->pkeys[idx].digest;
2497 return c->pkeys[idx].privatekey;
2500 #ifndef OPENSSL_NO_TLSEXT
2501 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2502 size_t *serverinfo_length)
2506 *serverinfo_length = 0;
2509 i = ssl_get_server_cert_index(s);
2513 if (c->pkeys[i].serverinfo == NULL)
2516 *serverinfo = c->pkeys[i].serverinfo;
2517 *serverinfo_length = c->pkeys[i].serverinfo_length;
2522 void ssl_update_cache(SSL *s, int mode)
2527 * If the session_id_length is 0, we are not supposed to cache it, and it
2528 * would be rather hard to do anyway :-)
2530 if (s->session->session_id_length == 0)
2533 i = s->session_ctx->session_cache_mode;
2534 if ((i & mode) && (!s->hit)
2535 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2536 || SSL_CTX_add_session(s->session_ctx, s->session))
2537 && (s->session_ctx->new_session_cb != NULL)) {
2538 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2539 if (!s->session_ctx->new_session_cb(s, s->session))
2540 SSL_SESSION_free(s->session);
2543 /* auto flush every 255 connections */
2544 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2545 if ((((mode & SSL_SESS_CACHE_CLIENT)
2546 ? s->session_ctx->stats.sess_connect_good
2547 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2548 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2553 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2558 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2563 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2568 if (s->method != meth) {
2569 if (s->handshake_func != NULL)
2570 conn = (s->handshake_func == s->method->ssl_connect);
2572 if (s->method->version == meth->version)
2575 s->method->ssl_free(s);
2577 ret = s->method->ssl_new(s);
2581 s->handshake_func = meth->ssl_connect;
2583 s->handshake_func = meth->ssl_accept;
2588 int SSL_get_error(const SSL *s, int i)
2595 return (SSL_ERROR_NONE);
2598 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2599 * where we do encode the error
2601 if ((l = ERR_peek_error()) != 0) {
2602 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2603 return (SSL_ERROR_SYSCALL);
2605 return (SSL_ERROR_SSL);
2608 if ((i < 0) && SSL_want_read(s)) {
2609 bio = SSL_get_rbio(s);
2610 if (BIO_should_read(bio))
2611 return (SSL_ERROR_WANT_READ);
2612 else if (BIO_should_write(bio))
2614 * This one doesn't make too much sense ... We never try to write
2615 * to the rbio, and an application program where rbio and wbio
2616 * are separate couldn't even know what it should wait for.
2617 * However if we ever set s->rwstate incorrectly (so that we have
2618 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2619 * wbio *are* the same, this test works around that bug; so it
2620 * might be safer to keep it.
2622 return (SSL_ERROR_WANT_WRITE);
2623 else if (BIO_should_io_special(bio)) {
2624 reason = BIO_get_retry_reason(bio);
2625 if (reason == BIO_RR_CONNECT)
2626 return (SSL_ERROR_WANT_CONNECT);
2627 else if (reason == BIO_RR_ACCEPT)
2628 return (SSL_ERROR_WANT_ACCEPT);
2630 return (SSL_ERROR_SYSCALL); /* unknown */
2634 if ((i < 0) && SSL_want_write(s)) {
2635 bio = SSL_get_wbio(s);
2636 if (BIO_should_write(bio))
2637 return (SSL_ERROR_WANT_WRITE);
2638 else if (BIO_should_read(bio))
2640 * See above (SSL_want_read(s) with BIO_should_write(bio))
2642 return (SSL_ERROR_WANT_READ);
2643 else if (BIO_should_io_special(bio)) {
2644 reason = BIO_get_retry_reason(bio);
2645 if (reason == BIO_RR_CONNECT)
2646 return (SSL_ERROR_WANT_CONNECT);
2647 else if (reason == BIO_RR_ACCEPT)
2648 return (SSL_ERROR_WANT_ACCEPT);
2650 return (SSL_ERROR_SYSCALL);
2653 if ((i < 0) && SSL_want_x509_lookup(s)) {
2654 return (SSL_ERROR_WANT_X509_LOOKUP);
2658 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2659 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2660 return (SSL_ERROR_ZERO_RETURN);
2662 return (SSL_ERROR_SYSCALL);
2665 int SSL_do_handshake(SSL *s)
2669 if (s->handshake_func == NULL) {
2670 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2674 s->method->ssl_renegotiate_check(s);
2676 if (SSL_in_init(s) || SSL_in_before(s)) {
2677 ret = s->handshake_func(s);
2683 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2684 * calls will reset it
2686 void SSL_set_accept_state(SSL *s)
2690 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2691 s->handshake_func = s->method->ssl_accept;
2692 /* clear the current cipher */
2693 ssl_clear_cipher_ctx(s);
2694 ssl_clear_hash_ctx(&s->read_hash);
2695 ssl_clear_hash_ctx(&s->write_hash);
2698 void SSL_set_connect_state(SSL *s)
2702 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2703 s->handshake_func = s->method->ssl_connect;
2704 /* clear the current cipher */
2705 ssl_clear_cipher_ctx(s);
2706 ssl_clear_hash_ctx(&s->read_hash);
2707 ssl_clear_hash_ctx(&s->write_hash);
2710 int ssl_undefined_function(SSL *s)
2712 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2716 int ssl_undefined_void_function(void)
2718 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2719 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2723 int ssl_undefined_const_function(const SSL *s)
2725 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2726 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2730 SSL_METHOD *ssl_bad_method(int ver)
2732 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2736 const char *SSL_get_version(const SSL *s)
2738 if (s->version == TLS1_2_VERSION)
2740 else if (s->version == TLS1_1_VERSION)
2742 else if (s->version == TLS1_VERSION)
2744 else if (s->version == SSL3_VERSION)
2746 else if (s->version == DTLS1_BAD_VER)
2747 return ("DTLSv0.9");
2748 else if (s->version == DTLS1_VERSION)
2750 else if (s->version == DTLS1_2_VERSION)
2751 return ("DTLSv1.2");
2756 SSL *SSL_dup(SSL *s)
2758 STACK_OF(X509_NAME) *sk;
2763 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2766 ret->version = s->version;
2767 ret->type = s->type;
2768 ret->method = s->method;
2770 if (s->session != NULL) {
2771 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2772 if(!SSL_copy_session_id(ret, s))
2776 * No session has been established yet, so we have to expect that
2777 * s->cert or ret->cert will be changed later -- they should not both
2778 * point to the same object, and thus we can't use
2779 * SSL_copy_session_id.
2782 ret->method->ssl_free(ret);
2783 ret->method = s->method;
2784 ret->method->ssl_new(ret);
2786 if (s->cert != NULL) {
2787 if (ret->cert != NULL) {
2788 ssl_cert_free(ret->cert);
2790 ret->cert = ssl_cert_dup(s->cert);
2791 if (ret->cert == NULL)
2795 if(!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
2799 ret->options = s->options;
2800 ret->mode = s->mode;
2801 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2802 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2803 ret->msg_callback = s->msg_callback;
2804 ret->msg_callback_arg = s->msg_callback_arg;
2805 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2806 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2807 ret->generate_session_id = s->generate_session_id;
2809 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2811 ret->debug = s->debug;
2813 /* copy app data, a little dangerous perhaps */
2814 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2817 /* setup rbio, and wbio */
2818 if (s->rbio != NULL) {
2819 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2822 if (s->wbio != NULL) {
2823 if (s->wbio != s->rbio) {
2824 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2827 ret->wbio = ret->rbio;
2829 ret->rwstate = s->rwstate;
2830 ret->in_handshake = s->in_handshake;
2831 ret->handshake_func = s->handshake_func;
2832 ret->server = s->server;
2833 ret->renegotiate = s->renegotiate;
2834 ret->new_session = s->new_session;
2835 ret->quiet_shutdown = s->quiet_shutdown;
2836 ret->shutdown = s->shutdown;
2837 ret->state = s->state; /* SSL_dup does not really work at any state,
2839 ret->rstate = s->rstate;
2840 ret->init_num = 0; /* would have to copy ret->init_buf,
2841 * ret->init_msg, ret->init_num,
2845 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2847 /* dup the cipher_list and cipher_list_by_id stacks */
2848 if (s->cipher_list != NULL) {
2849 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2852 if (s->cipher_list_by_id != NULL)
2853 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2857 /* Dup the client_CA list */
2858 if (s->client_CA != NULL) {
2859 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2861 ret->client_CA = sk;
2862 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2863 xn = sk_X509_NAME_value(sk, i);
2864 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2880 void ssl_clear_cipher_ctx(SSL *s)
2882 if (s->enc_read_ctx != NULL) {
2883 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2884 OPENSSL_free(s->enc_read_ctx);
2885 s->enc_read_ctx = NULL;
2887 if (s->enc_write_ctx != NULL) {
2888 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2889 OPENSSL_free(s->enc_write_ctx);
2890 s->enc_write_ctx = NULL;
2892 #ifndef OPENSSL_NO_COMP
2893 if (s->expand != NULL) {
2894 COMP_CTX_free(s->expand);
2897 if (s->compress != NULL) {
2898 COMP_CTX_free(s->compress);
2904 X509 *SSL_get_certificate(const SSL *s)
2906 if (s->cert != NULL)
2907 return (s->cert->key->x509);
2912 EVP_PKEY *SSL_get_privatekey(const SSL *s)
2914 if (s->cert != NULL)
2915 return (s->cert->key->privatekey);
2920 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2922 if (ctx->cert != NULL)
2923 return ctx->cert->key->x509;
2928 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2930 if (ctx->cert != NULL)
2931 return ctx->cert->key->privatekey;
2936 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2938 if ((s->session != NULL) && (s->session->cipher != NULL))
2939 return (s->session->cipher);
2943 #ifdef OPENSSL_NO_COMP
2944 const void *SSL_get_current_compression(SSL *s)
2949 const void *SSL_get_current_expansion(SSL *s)
2955 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2957 if (s->compress != NULL)
2958 return (s->compress->meth);
2962 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2964 if (s->expand != NULL)
2965 return (s->expand->meth);
2970 int ssl_init_wbio_buffer(SSL *s, int push)
2974 if (s->bbio == NULL) {
2975 bbio = BIO_new(BIO_f_buffer());
2981 if (s->bbio == s->wbio)
2982 s->wbio = BIO_pop(s->wbio);
2984 (void)BIO_reset(bbio);
2985 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2986 if (!BIO_set_read_buffer_size(bbio, 1)) {
2987 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
2991 if (s->wbio != bbio)
2992 s->wbio = BIO_push(bbio, s->wbio);
2994 if (s->wbio == bbio)
2995 s->wbio = BIO_pop(bbio);
3000 void ssl_free_wbio_buffer(SSL *s)
3002 if (s->bbio == NULL)
3005 if (s->bbio == s->wbio) {
3006 /* remove buffering */
3007 s->wbio = BIO_pop(s->wbio);
3008 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
3009 * adding one more preprocessor symbol */
3010 assert(s->wbio != NULL);
3017 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3019 ctx->quiet_shutdown = mode;
3022 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3024 return (ctx->quiet_shutdown);
3027 void SSL_set_quiet_shutdown(SSL *s, int mode)
3029 s->quiet_shutdown = mode;
3032 int SSL_get_quiet_shutdown(const SSL *s)
3034 return (s->quiet_shutdown);
3037 void SSL_set_shutdown(SSL *s, int mode)
3042 int SSL_get_shutdown(const SSL *s)
3044 return (s->shutdown);
3047 int SSL_version(const SSL *s)
3049 return (s->version);
3052 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3057 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3060 if (ssl->ctx == ctx)
3062 #ifndef OPENSSL_NO_TLSEXT
3064 ctx = ssl->initial_ctx;
3066 new_cert = ssl_cert_dup(ctx->cert);
3067 if (new_cert == NULL) {
3070 /* Preserve any already negotiated parameters */
3072 new_cert->peer_sigalgs = ssl->cert->peer_sigalgs;
3073 new_cert->peer_sigalgslen = ssl->cert->peer_sigalgslen;
3074 ssl->cert->peer_sigalgs = NULL;
3075 new_cert->ciphers_raw = ssl->cert->ciphers_raw;
3076 new_cert->ciphers_rawlen = ssl->cert->ciphers_rawlen;
3077 ssl->cert->ciphers_raw = NULL;
3079 ssl_cert_free(ssl->cert);
3080 ssl->cert = new_cert;
3083 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3084 * so setter APIs must prevent invalid lengths from entering the system.
3086 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3089 * If the session ID context matches that of the parent SSL_CTX,
3090 * inherit it from the new SSL_CTX as well. If however the context does
3091 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3092 * leave it unchanged.
3094 if ((ssl->ctx != NULL) &&
3095 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3096 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3097 ssl->sid_ctx_length = ctx->sid_ctx_length;
3098 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3101 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3102 if (ssl->ctx != NULL)
3103 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3109 #ifndef OPENSSL_NO_STDIO
3110 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3112 return (X509_STORE_set_default_paths(ctx->cert_store));
3115 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3118 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3122 void SSL_set_info_callback(SSL *ssl,
3123 void (*cb) (const SSL *ssl, int type, int val))
3125 ssl->info_callback = cb;
3129 * One compiler (Diab DCC) doesn't like argument names in returned function
3132 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3135 return ssl->info_callback;
3138 int SSL_state(const SSL *ssl)
3140 return (ssl->state);
3143 void SSL_set_state(SSL *ssl, int state)
3148 void SSL_set_verify_result(SSL *ssl, long arg)
3150 ssl->verify_result = arg;
3153 long SSL_get_verify_result(const SSL *ssl)
3155 return (ssl->verify_result);
3158 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3159 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3161 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3162 new_func, dup_func, free_func);
3165 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3167 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3170 void *SSL_get_ex_data(const SSL *s, int idx)
3172 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3175 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3176 CRYPTO_EX_dup *dup_func,
3177 CRYPTO_EX_free *free_func)
3179 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3180 new_func, dup_func, free_func);
3183 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3185 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3188 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3190 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3198 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3200 return (ctx->cert_store);
3203 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3205 if (ctx->cert_store != NULL)
3206 X509_STORE_free(ctx->cert_store);
3207 ctx->cert_store = store;
3210 int SSL_want(const SSL *s)
3212 return (s->rwstate);
3216 * \brief Set the callback for generating temporary RSA keys.
3217 * \param ctx the SSL context.
3218 * \param cb the callback
3221 #ifndef OPENSSL_NO_RSA
3222 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3226 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3229 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3233 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3239 * \brief The RSA temporary key callback function.
3240 * \param ssl the SSL session.
3241 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3242 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3243 * of the required key in bits.
3244 * \return the temporary RSA key.
3245 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3248 RSA *cb(SSL *ssl, int is_export, int keylength)
3254 * \brief Set the callback for generating temporary DH keys.
3255 * \param ctx the SSL context.
3256 * \param dh the callback
3259 #ifndef OPENSSL_NO_DH
3260 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3261 DH *(*dh) (SSL *ssl, int is_export,
3264 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3267 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3270 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3274 #ifndef OPENSSL_NO_EC
3275 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3276 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3279 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3280 (void (*)(void))ecdh);
3283 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3284 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3287 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3291 #ifndef OPENSSL_NO_PSK
3292 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3294 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3295 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3296 SSL_R_DATA_LENGTH_TOO_LONG);
3299 if (ctx->psk_identity_hint != NULL)
3300 OPENSSL_free(ctx->psk_identity_hint);
3301 if (identity_hint != NULL) {
3302 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3303 if (ctx->psk_identity_hint == NULL)
3306 ctx->psk_identity_hint = NULL;
3310 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3315 if (s->session == NULL)
3316 return 1; /* session not created yet, ignored */
3318 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3319 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3322 if (s->session->psk_identity_hint != NULL)
3323 OPENSSL_free(s->session->psk_identity_hint);
3324 if (identity_hint != NULL) {
3325 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3326 if (s->session->psk_identity_hint == NULL)
3329 s->session->psk_identity_hint = NULL;
3333 const char *SSL_get_psk_identity_hint(const SSL *s)
3335 if (s == NULL || s->session == NULL)
3337 return (s->session->psk_identity_hint);
3340 const char *SSL_get_psk_identity(const SSL *s)
3342 if (s == NULL || s->session == NULL)
3344 return (s->session->psk_identity);
3347 void SSL_set_psk_client_callback(SSL *s,
3348 unsigned int (*cb) (SSL *ssl,
3357 s->psk_client_callback = cb;
3360 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3361 unsigned int (*cb) (SSL *ssl,
3370 ctx->psk_client_callback = cb;
3373 void SSL_set_psk_server_callback(SSL *s,
3374 unsigned int (*cb) (SSL *ssl,
3375 const char *identity,
3380 s->psk_server_callback = cb;
3383 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3384 unsigned int (*cb) (SSL *ssl,
3385 const char *identity,
3390 ctx->psk_server_callback = cb;
3394 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3395 void (*cb) (int write_p, int version,
3396 int content_type, const void *buf,
3397 size_t len, SSL *ssl, void *arg))
3399 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3402 void SSL_set_msg_callback(SSL *ssl,
3403 void (*cb) (int write_p, int version,
3404 int content_type, const void *buf,
3405 size_t len, SSL *ssl, void *arg))
3407 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3410 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3411 int (*cb) (SSL *ssl,
3415 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3416 (void (*)(void))cb);
3419 void SSL_set_not_resumable_session_callback(SSL *ssl,
3420 int (*cb) (SSL *ssl,
3421 int is_forward_secure))
3423 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3424 (void (*)(void))cb);
3428 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3429 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3430 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3434 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3436 ssl_clear_hash_ctx(hash);
3437 *hash = EVP_MD_CTX_create();
3439 EVP_DigestInit_ex(*hash, md, NULL);
3443 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3447 EVP_MD_CTX_destroy(*hash);
3451 /* Retrieve handshake hashes */
3452 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3454 unsigned char *p = out;
3459 EVP_MD_CTX_init(&ctx);
3460 for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
3461 if (mask & ssl_get_algorithm2(s)) {
3462 int hashsize = EVP_MD_size(md);
3463 EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
3464 if (!hdgst || hashsize < 0 || hashsize > outlen)
3466 if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
3468 if (!EVP_DigestFinal_ex(&ctx, p, NULL))
3476 EVP_MD_CTX_cleanup(&ctx);
3480 void SSL_set_debug(SSL *s, int debug)
3485 int SSL_cache_hit(SSL *s)
3490 int SSL_is_server(SSL *s)
3495 void SSL_set_security_level(SSL *s, int level)
3497 s->cert->sec_level = level;
3500 int SSL_get_security_level(const SSL *s)
3502 return s->cert->sec_level;
3505 void SSL_set_security_callback(SSL *s,
3506 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3507 int bits, int nid, void *other,
3510 s->cert->sec_cb = cb;
3513 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3515 void *other, void *ex) {
3516 return s->cert->sec_cb;
3519 void SSL_set0_security_ex_data(SSL *s, void *ex)
3521 s->cert->sec_ex = ex;
3524 void *SSL_get0_security_ex_data(const SSL *s)
3526 return s->cert->sec_ex;
3529 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3531 ctx->cert->sec_level = level;
3534 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3536 return ctx->cert->sec_level;
3539 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3540 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3541 int bits, int nid, void *other,
3544 ctx->cert->sec_cb = cb;
3547 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3553 return ctx->cert->sec_cb;
3556 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3558 ctx->cert->sec_ex = ex;
3561 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3563 return ctx->cert->sec_ex;
3566 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);