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 unsigned char *rp, *wp;
196 if (s->method == NULL) {
197 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
201 if (ssl_clear_bad_session(s)) {
202 SSL_SESSION_free(s->session);
210 if (s->renegotiate) {
211 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
217 s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT);
219 s->version = s->method->version;
220 s->client_version = s->version;
221 s->rwstate = SSL_NOTHING;
222 s->rstate = SSL_ST_READ_HEADER;
224 if (s->init_buf != NULL) {
225 BUF_MEM_free(s->init_buf);
229 ssl_clear_cipher_ctx(s);
230 ssl_clear_hash_ctx(&s->read_hash);
231 ssl_clear_hash_ctx(&s->write_hash);
236 * Check to see if we were changed into a different method, if so, revert
237 * back if we are not doing session-id reuse.
239 if (!s->in_handshake && (s->session == NULL)
240 && (s->method != s->ctx->method)) {
241 s->method->ssl_free(s);
242 s->method = s->ctx->method;
243 if (!s->method->ssl_new(s))
246 s->method->ssl_clear(s);
248 read_ahead = RECORD_LAYER_get_read_ahead(&s->rlayer);
249 rp = SSL3_BUFFER_get_buf(RECORD_LAYER_get_rbuf(&s->rlayer));
250 rlen = SSL3_BUFFER_get_len(RECORD_LAYER_get_rbuf(&s->rlayer));
251 wp = SSL3_BUFFER_get_buf(RECORD_LAYER_get_wbuf(&s->rlayer));
252 wlen = SSL3_BUFFER_get_len(RECORD_LAYER_get_wbuf(&s->rlayer));
253 memset(&s->rlayer, 0, sizeof s->rlayer);
254 SSL3_BUFFER_set_buf(RECORD_LAYER_get_rbuf(&s->rlayer), rp);
255 SSL3_BUFFER_set_len(RECORD_LAYER_get_rbuf(&s->rlayer), rlen);
256 SSL3_BUFFER_set_buf(RECORD_LAYER_get_wbuf(&s->rlayer), wp);
257 SSL3_BUFFER_set_len(RECORD_LAYER_get_wbuf(&s->rlayer), wlen);
259 /* Do I need to do this? As far as I can tell read_ahead did not
260 * previously get reset by SSL_clear...so I'll keep it that way..but is
263 RECORD_LAYER_set_read_ahead(&s->rlayer, read_ahead);
264 RECORD_LAYER_set_ssl(&s->rlayer, s);
269 /** Used to change an SSL_CTXs default SSL method type */
270 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
272 STACK_OF(SSL_CIPHER) *sk;
276 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
277 &(ctx->cipher_list_by_id),
278 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
279 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
280 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
281 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
287 SSL *SSL_new(SSL_CTX *ctx)
292 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
295 if (ctx->method == NULL) {
296 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
300 s = (SSL *)OPENSSL_malloc(sizeof(SSL));
303 memset(s, 0, sizeof(SSL));
305 RECORD_LAYER_set_ssl(&s->rlayer, s);
306 SSL3_RECORD_clear(RECORD_LAYER_get_rrec(&s->rlayer));
308 #ifndef OPENSSL_NO_KRB5
309 s->kssl_ctx = kssl_ctx_new();
310 #endif /* OPENSSL_NO_KRB5 */
312 s->options = ctx->options;
314 s->max_cert_list = ctx->max_cert_list;
317 * Earlier library versions used to copy the pointer to the CERT, not
318 * its contents; only when setting new parameters for the per-SSL
319 * copy, ssl_cert_new would be called (and the direct reference to
320 * the per-SSL_CTX settings would be lost, but those still were
321 * indirectly accessed for various purposes, and for that reason they
322 * used to be known as s->ctx->default_cert). Now we don't look at the
323 * SSL_CTX's CERT after having duplicated it once.
325 s->cert = ssl_cert_dup(ctx->cert);
329 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
330 s->msg_callback = ctx->msg_callback;
331 s->msg_callback_arg = ctx->msg_callback_arg;
332 s->verify_mode = ctx->verify_mode;
333 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
334 s->sid_ctx_length = ctx->sid_ctx_length;
335 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
336 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
337 s->verify_callback = ctx->default_verify_callback;
338 s->generate_session_id = ctx->generate_session_id;
340 s->param = X509_VERIFY_PARAM_new();
343 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
344 s->quiet_shutdown = ctx->quiet_shutdown;
345 s->max_send_fragment = ctx->max_send_fragment;
347 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
349 #ifndef OPENSSL_NO_TLSEXT
350 s->tlsext_debug_cb = 0;
351 s->tlsext_debug_arg = NULL;
352 s->tlsext_ticket_expected = 0;
353 s->tlsext_status_type = -1;
354 s->tlsext_status_expected = 0;
355 s->tlsext_ocsp_ids = NULL;
356 s->tlsext_ocsp_exts = NULL;
357 s->tlsext_ocsp_resp = NULL;
358 s->tlsext_ocsp_resplen = -1;
359 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
360 s->initial_ctx = ctx;
361 # ifndef OPENSSL_NO_EC
362 if (ctx->tlsext_ecpointformatlist) {
363 s->tlsext_ecpointformatlist =
364 BUF_memdup(ctx->tlsext_ecpointformatlist,
365 ctx->tlsext_ecpointformatlist_length);
366 if (!s->tlsext_ecpointformatlist)
368 s->tlsext_ecpointformatlist_length =
369 ctx->tlsext_ecpointformatlist_length;
371 if (ctx->tlsext_ellipticcurvelist) {
372 s->tlsext_ellipticcurvelist =
373 BUF_memdup(ctx->tlsext_ellipticcurvelist,
374 ctx->tlsext_ellipticcurvelist_length);
375 if (!s->tlsext_ellipticcurvelist)
377 s->tlsext_ellipticcurvelist_length =
378 ctx->tlsext_ellipticcurvelist_length;
381 # ifndef OPENSSL_NO_NEXTPROTONEG
382 s->next_proto_negotiated = NULL;
385 if (s->ctx->alpn_client_proto_list) {
386 s->alpn_client_proto_list =
387 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
388 if (s->alpn_client_proto_list == NULL)
390 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
391 s->ctx->alpn_client_proto_list_len);
392 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
396 s->verify_result = X509_V_OK;
398 s->method = ctx->method;
400 if (!s->method->ssl_new(s))
404 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
409 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
411 #ifndef OPENSSL_NO_PSK
412 s->psk_client_callback = ctx->psk_client_callback;
413 s->psk_server_callback = ctx->psk_server_callback;
420 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
424 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
425 unsigned int sid_ctx_len)
427 if (sid_ctx_len > sizeof ctx->sid_ctx) {
428 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
429 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
432 ctx->sid_ctx_length = sid_ctx_len;
433 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
438 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
439 unsigned int sid_ctx_len)
441 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
442 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
443 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
446 ssl->sid_ctx_length = sid_ctx_len;
447 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
452 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
454 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
455 ctx->generate_session_id = cb;
456 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
460 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
462 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
463 ssl->generate_session_id = cb;
464 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
468 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
472 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
473 * we can "construct" a session to give us the desired check - ie. to
474 * find if there's a session in the hash table that would conflict with
475 * any new session built out of this id/id_len and the ssl_version in use
480 if (id_len > sizeof r.session_id)
483 r.ssl_version = ssl->version;
484 r.session_id_length = id_len;
485 memcpy(r.session_id, id, id_len);
487 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
488 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
489 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
493 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
495 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
498 int SSL_set_purpose(SSL *s, int purpose)
500 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
503 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
505 return X509_VERIFY_PARAM_set_trust(s->param, trust);
508 int SSL_set_trust(SSL *s, int trust)
510 return X509_VERIFY_PARAM_set_trust(s->param, trust);
513 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
515 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
518 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
520 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
523 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
528 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
533 void SSL_certs_clear(SSL *s)
535 ssl_cert_clear_certs(s->cert);
538 void SSL_free(SSL *s)
545 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
553 fprintf(stderr, "SSL_free, bad reference count\n");
559 X509_VERIFY_PARAM_free(s->param);
561 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
563 if (s->bbio != NULL) {
564 /* If the buffering BIO is in place, pop it off */
565 if (s->bbio == s->wbio) {
566 s->wbio = BIO_pop(s->wbio);
571 BIO_free_all(s->rbio);
572 if (s->wbio != s->rbio)
573 BIO_free_all(s->wbio);
575 if (s->init_buf != NULL)
576 BUF_MEM_free(s->init_buf);
578 /* add extra stuff */
579 if (s->cipher_list != NULL)
580 sk_SSL_CIPHER_free(s->cipher_list);
581 if (s->cipher_list_by_id != NULL)
582 sk_SSL_CIPHER_free(s->cipher_list_by_id);
584 /* Make the next call work :-) */
585 if (s->session != NULL) {
586 ssl_clear_bad_session(s);
587 SSL_SESSION_free(s->session);
590 ssl_clear_cipher_ctx(s);
591 ssl_clear_hash_ctx(&s->read_hash);
592 ssl_clear_hash_ctx(&s->write_hash);
595 ssl_cert_free(s->cert);
596 /* Free up if allocated */
598 #ifndef OPENSSL_NO_TLSEXT
599 if (s->tlsext_hostname)
600 OPENSSL_free(s->tlsext_hostname);
602 SSL_CTX_free(s->initial_ctx);
603 # ifndef OPENSSL_NO_EC
604 if (s->tlsext_ecpointformatlist)
605 OPENSSL_free(s->tlsext_ecpointformatlist);
606 if (s->tlsext_ellipticcurvelist)
607 OPENSSL_free(s->tlsext_ellipticcurvelist);
608 # endif /* OPENSSL_NO_EC */
609 if (s->tlsext_ocsp_exts)
610 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
611 if (s->tlsext_ocsp_ids)
612 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
613 if (s->tlsext_ocsp_resp)
614 OPENSSL_free(s->tlsext_ocsp_resp);
615 if (s->alpn_client_proto_list)
616 OPENSSL_free(s->alpn_client_proto_list);
619 if (s->client_CA != NULL)
620 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
622 if (s->method != NULL)
623 s->method->ssl_free(s);
625 if (SSL3_BUFFER_is_initialised(RECORD_LAYER_get_rbuf(&s->rlayer)))
626 ssl3_release_read_buffer(s);
627 if (SSL3_BUFFER_is_initialised(RECORD_LAYER_get_wbuf(&s->rlayer)))
628 ssl3_release_write_buffer(s);
629 SSL3_RECORD_release(RECORD_LAYER_get_rrec(&s->rlayer));
632 SSL_CTX_free(s->ctx);
634 #ifndef OPENSSL_NO_KRB5
635 if (s->kssl_ctx != NULL)
636 kssl_ctx_free(s->kssl_ctx);
637 #endif /* OPENSSL_NO_KRB5 */
639 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
640 if (s->next_proto_negotiated)
641 OPENSSL_free(s->next_proto_negotiated);
644 #ifndef OPENSSL_NO_SRTP
645 if (s->srtp_profiles)
646 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
652 void SSL_set_rbio(SSL *s, BIO *rbio)
655 BIO_free_all(s->rbio);
659 void SSL_set_wbio(SSL *s, BIO *wbio)
662 * If the output buffering BIO is still in place, remove it
664 if (s->bbio != NULL) {
665 if (s->wbio == s->bbio) {
666 s->wbio = s->wbio->next_bio;
667 s->bbio->next_bio = NULL;
670 if (s->wbio != wbio && s->rbio != s->wbio)
671 BIO_free_all(s->wbio);
675 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
677 SSL_set_wbio(s, wbio);
678 SSL_set_rbio(s, rbio);
681 BIO *SSL_get_rbio(const SSL *s)
686 BIO *SSL_get_wbio(const SSL *s)
691 int SSL_get_fd(const SSL *s)
693 return (SSL_get_rfd(s));
696 int SSL_get_rfd(const SSL *s)
702 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
708 int SSL_get_wfd(const SSL *s)
714 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
720 #ifndef OPENSSL_NO_SOCK
721 int SSL_set_fd(SSL *s, int fd)
726 bio = BIO_new(BIO_s_socket());
729 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
732 BIO_set_fd(bio, fd, BIO_NOCLOSE);
733 SSL_set_bio(s, bio, bio);
739 int SSL_set_wfd(SSL *s, int fd)
744 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
745 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
746 bio = BIO_new(BIO_s_socket());
749 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
752 BIO_set_fd(bio, fd, BIO_NOCLOSE);
753 SSL_set_bio(s, SSL_get_rbio(s), bio);
755 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
761 int SSL_set_rfd(SSL *s, int fd)
766 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
767 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
768 bio = BIO_new(BIO_s_socket());
771 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
774 BIO_set_fd(bio, fd, BIO_NOCLOSE);
775 SSL_set_bio(s, bio, SSL_get_wbio(s));
777 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
784 /* return length of latest Finished message we sent, copy to 'buf' */
785 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
790 ret = s->s3->tmp.finish_md_len;
793 memcpy(buf, s->s3->tmp.finish_md, count);
798 /* return length of latest Finished message we expected, copy to 'buf' */
799 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
804 ret = s->s3->tmp.peer_finish_md_len;
807 memcpy(buf, s->s3->tmp.peer_finish_md, count);
812 int SSL_get_verify_mode(const SSL *s)
814 return (s->verify_mode);
817 int SSL_get_verify_depth(const SSL *s)
819 return X509_VERIFY_PARAM_get_depth(s->param);
822 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
823 return (s->verify_callback);
826 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
828 return (ctx->verify_mode);
831 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
833 return X509_VERIFY_PARAM_get_depth(ctx->param);
836 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
837 return (ctx->default_verify_callback);
840 void SSL_set_verify(SSL *s, int mode,
841 int (*callback) (int ok, X509_STORE_CTX *ctx))
843 s->verify_mode = mode;
844 if (callback != NULL)
845 s->verify_callback = callback;
848 void SSL_set_verify_depth(SSL *s, int depth)
850 X509_VERIFY_PARAM_set_depth(s->param, depth);
853 void SSL_set_read_ahead(SSL *s, int yes)
855 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
858 int SSL_get_read_ahead(const SSL *s)
860 return RECORD_LAYER_get_read_ahead(&s->rlayer);
863 int SSL_pending(const SSL *s)
866 * SSL_pending cannot work properly if read-ahead is enabled
867 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
868 * impossible to fix since SSL_pending cannot report errors that may be
869 * observed while scanning the new data. (Note that SSL_pending() is
870 * often used as a boolean value, so we'd better not return -1.)
872 return (s->method->ssl_pending(s));
875 X509 *SSL_get_peer_certificate(const SSL *s)
879 if ((s == NULL) || (s->session == NULL))
882 r = s->session->peer;
887 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
892 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
896 if ((s == NULL) || (s->session == NULL)
897 || (s->session->sess_cert == NULL))
900 r = s->session->sess_cert->cert_chain;
903 * If we are a client, cert_chain includes the peer's own certificate; if
904 * we are a server, it does not.
911 * Now in theory, since the calling process own 't' it should be safe to
912 * modify. We need to be able to read f without being hassled
914 int SSL_copy_session_id(SSL *t, const SSL *f)
916 /* Do we need to to SSL locking? */
917 if(!SSL_set_session(t, SSL_get_session(f))) {
922 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
924 if (t->method != f->method) {
925 t->method->ssl_free(t); /* cleanup current */
926 t->method = f->method; /* change method */
927 t->method->ssl_new(t); /* setup new */
930 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
931 ssl_cert_free(t->cert);
933 if(!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
940 /* Fix this so it checks all the valid key/cert options */
941 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
944 (ctx->cert->key->x509 == NULL)) {
945 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
946 SSL_R_NO_CERTIFICATE_ASSIGNED);
949 if (ctx->cert->key->privatekey == NULL) {
950 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
951 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
954 return (X509_check_private_key
955 (ctx->cert->key->x509, ctx->cert->key->privatekey));
958 /* Fix this function so that it takes an optional type parameter */
959 int SSL_check_private_key(const SSL *ssl)
962 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
965 if (ssl->cert->key->x509 == NULL) {
966 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
969 if (ssl->cert->key->privatekey == NULL) {
970 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
973 return (X509_check_private_key(ssl->cert->key->x509,
974 ssl->cert->key->privatekey));
977 int SSL_accept(SSL *s)
979 if (s->handshake_func == 0)
980 /* Not properly initialized yet */
981 SSL_set_accept_state(s);
983 return (s->method->ssl_accept(s));
986 int SSL_connect(SSL *s)
988 if (s->handshake_func == 0)
989 /* Not properly initialized yet */
990 SSL_set_connect_state(s);
992 return (s->method->ssl_connect(s));
995 long SSL_get_default_timeout(const SSL *s)
997 return (s->method->get_timeout());
1000 int SSL_read(SSL *s, void *buf, int num)
1002 if (s->handshake_func == 0) {
1003 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1007 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1008 s->rwstate = SSL_NOTHING;
1011 return (s->method->ssl_read(s, buf, num));
1014 int SSL_peek(SSL *s, void *buf, int num)
1016 if (s->handshake_func == 0) {
1017 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1021 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1024 return (s->method->ssl_peek(s, buf, num));
1027 int SSL_write(SSL *s, const void *buf, int num)
1029 if (s->handshake_func == 0) {
1030 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1034 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1035 s->rwstate = SSL_NOTHING;
1036 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1039 return (s->method->ssl_write(s, buf, num));
1042 int SSL_shutdown(SSL *s)
1045 * Note that this function behaves differently from what one might
1046 * expect. Return values are 0 for no success (yet), 1 for success; but
1047 * calling it once is usually not enough, even if blocking I/O is used
1048 * (see ssl3_shutdown).
1051 if (s->handshake_func == 0) {
1052 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1056 if ((s != NULL) && !SSL_in_init(s))
1057 return (s->method->ssl_shutdown(s));
1062 int SSL_renegotiate(SSL *s)
1064 if (s->renegotiate == 0)
1069 return (s->method->ssl_renegotiate(s));
1072 int SSL_renegotiate_abbreviated(SSL *s)
1074 if (s->renegotiate == 0)
1079 return (s->method->ssl_renegotiate(s));
1082 int SSL_renegotiate_pending(SSL *s)
1085 * becomes true when negotiation is requested; false again once a
1086 * handshake has finished
1088 return (s->renegotiate != 0);
1091 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1096 case SSL_CTRL_GET_READ_AHEAD:
1097 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1098 case SSL_CTRL_SET_READ_AHEAD:
1099 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1100 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1103 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1104 s->msg_callback_arg = parg;
1107 case SSL_CTRL_OPTIONS:
1108 return (s->options |= larg);
1109 case SSL_CTRL_CLEAR_OPTIONS:
1110 return (s->options &= ~larg);
1112 return (s->mode |= larg);
1113 case SSL_CTRL_CLEAR_MODE:
1114 return (s->mode &= ~larg);
1115 case SSL_CTRL_GET_MAX_CERT_LIST:
1116 return (s->max_cert_list);
1117 case SSL_CTRL_SET_MAX_CERT_LIST:
1118 l = s->max_cert_list;
1119 s->max_cert_list = larg;
1121 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1122 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1124 s->max_send_fragment = larg;
1126 case SSL_CTRL_GET_RI_SUPPORT:
1128 return s->s3->send_connection_binding;
1131 case SSL_CTRL_CERT_FLAGS:
1132 return (s->cert->cert_flags |= larg);
1133 case SSL_CTRL_CLEAR_CERT_FLAGS:
1134 return (s->cert->cert_flags &= ~larg);
1136 case SSL_CTRL_GET_RAW_CIPHERLIST:
1138 if (s->cert->ciphers_raw == NULL)
1140 *(unsigned char **)parg = s->cert->ciphers_raw;
1141 return (int)s->cert->ciphers_rawlen;
1143 return ssl_put_cipher_by_char(s, NULL, NULL);
1144 case SSL_CTRL_GET_EXTMS_SUPPORT:
1145 if (!s->session || SSL_in_init(s) || s->in_handshake)
1147 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1152 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1156 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1159 case SSL_CTRL_SET_MSG_CALLBACK:
1160 s->msg_callback = (void (*)
1161 (int write_p, int version, int content_type,
1162 const void *buf, size_t len, SSL *ssl,
1167 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1171 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1173 return ctx->sessions;
1176 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1179 /* For some cases with ctx == NULL perform syntax checks */
1182 #ifndef OPENSSL_NO_EC
1183 case SSL_CTRL_SET_CURVES_LIST:
1184 return tls1_set_curves_list(NULL, NULL, parg);
1186 case SSL_CTRL_SET_SIGALGS_LIST:
1187 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1188 return tls1_set_sigalgs_list(NULL, parg, 0);
1195 case SSL_CTRL_GET_READ_AHEAD:
1196 return (ctx->read_ahead);
1197 case SSL_CTRL_SET_READ_AHEAD:
1198 l = ctx->read_ahead;
1199 ctx->read_ahead = larg;
1202 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1203 ctx->msg_callback_arg = parg;
1206 case SSL_CTRL_GET_MAX_CERT_LIST:
1207 return (ctx->max_cert_list);
1208 case SSL_CTRL_SET_MAX_CERT_LIST:
1209 l = ctx->max_cert_list;
1210 ctx->max_cert_list = larg;
1213 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1214 l = ctx->session_cache_size;
1215 ctx->session_cache_size = larg;
1217 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1218 return (ctx->session_cache_size);
1219 case SSL_CTRL_SET_SESS_CACHE_MODE:
1220 l = ctx->session_cache_mode;
1221 ctx->session_cache_mode = larg;
1223 case SSL_CTRL_GET_SESS_CACHE_MODE:
1224 return (ctx->session_cache_mode);
1226 case SSL_CTRL_SESS_NUMBER:
1227 return (lh_SSL_SESSION_num_items(ctx->sessions));
1228 case SSL_CTRL_SESS_CONNECT:
1229 return (ctx->stats.sess_connect);
1230 case SSL_CTRL_SESS_CONNECT_GOOD:
1231 return (ctx->stats.sess_connect_good);
1232 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1233 return (ctx->stats.sess_connect_renegotiate);
1234 case SSL_CTRL_SESS_ACCEPT:
1235 return (ctx->stats.sess_accept);
1236 case SSL_CTRL_SESS_ACCEPT_GOOD:
1237 return (ctx->stats.sess_accept_good);
1238 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1239 return (ctx->stats.sess_accept_renegotiate);
1240 case SSL_CTRL_SESS_HIT:
1241 return (ctx->stats.sess_hit);
1242 case SSL_CTRL_SESS_CB_HIT:
1243 return (ctx->stats.sess_cb_hit);
1244 case SSL_CTRL_SESS_MISSES:
1245 return (ctx->stats.sess_miss);
1246 case SSL_CTRL_SESS_TIMEOUTS:
1247 return (ctx->stats.sess_timeout);
1248 case SSL_CTRL_SESS_CACHE_FULL:
1249 return (ctx->stats.sess_cache_full);
1250 case SSL_CTRL_OPTIONS:
1251 return (ctx->options |= larg);
1252 case SSL_CTRL_CLEAR_OPTIONS:
1253 return (ctx->options &= ~larg);
1255 return (ctx->mode |= larg);
1256 case SSL_CTRL_CLEAR_MODE:
1257 return (ctx->mode &= ~larg);
1258 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1259 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1261 ctx->max_send_fragment = larg;
1263 case SSL_CTRL_CERT_FLAGS:
1264 return (ctx->cert->cert_flags |= larg);
1265 case SSL_CTRL_CLEAR_CERT_FLAGS:
1266 return (ctx->cert->cert_flags &= ~larg);
1268 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1272 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1275 case SSL_CTRL_SET_MSG_CALLBACK:
1276 ctx->msg_callback = (void (*)
1277 (int write_p, int version, int content_type,
1278 const void *buf, size_t len, SSL *ssl,
1283 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1287 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1295 return ((l > 0) ? 1 : -1);
1298 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1299 const SSL_CIPHER *const *bp)
1303 l = (*ap)->id - (*bp)->id;
1307 return ((l > 0) ? 1 : -1);
1310 /** return a STACK of the ciphers available for the SSL and in order of
1312 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1315 if (s->cipher_list != NULL) {
1316 return (s->cipher_list);
1317 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1318 return (s->ctx->cipher_list);
1324 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1326 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1328 ciphers = SSL_get_ciphers(s);
1331 ssl_set_client_disabled(s);
1332 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1333 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1334 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1336 sk = sk_SSL_CIPHER_new_null();
1339 if (!sk_SSL_CIPHER_push(sk, c)) {
1340 sk_SSL_CIPHER_free(sk);
1348 /** return a STACK of the ciphers available for the SSL and in order of
1350 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1353 if (s->cipher_list_by_id != NULL) {
1354 return (s->cipher_list_by_id);
1355 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1356 return (s->ctx->cipher_list_by_id);
1362 /** The old interface to get the same thing as SSL_get_ciphers() */
1363 const char *SSL_get_cipher_list(const SSL *s, int n)
1366 STACK_OF(SSL_CIPHER) *sk;
1370 sk = SSL_get_ciphers(s);
1371 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1373 c = sk_SSL_CIPHER_value(sk, n);
1379 /** specify the ciphers to be used by default by the SSL_CTX */
1380 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1382 STACK_OF(SSL_CIPHER) *sk;
1384 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1385 &ctx->cipher_list_by_id, str, ctx->cert);
1387 * ssl_create_cipher_list may return an empty stack if it was unable to
1388 * find a cipher matching the given rule string (for example if the rule
1389 * string specifies a cipher which has been disabled). This is not an
1390 * error as far as ssl_create_cipher_list is concerned, and hence
1391 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1395 else if (sk_SSL_CIPHER_num(sk) == 0) {
1396 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1402 /** specify the ciphers to be used by the SSL */
1403 int SSL_set_cipher_list(SSL *s, const char *str)
1405 STACK_OF(SSL_CIPHER) *sk;
1407 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1408 &s->cipher_list_by_id, str, s->cert);
1409 /* see comment in SSL_CTX_set_cipher_list */
1412 else if (sk_SSL_CIPHER_num(sk) == 0) {
1413 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1419 /* works well for SSLv2, not so good for SSLv3 */
1420 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1423 STACK_OF(SSL_CIPHER) *sk;
1427 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1431 sk = s->session->ciphers;
1433 if (sk_SSL_CIPHER_num(sk) == 0)
1436 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1439 c = sk_SSL_CIPHER_value(sk, i);
1440 n = strlen(c->name);
1456 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1458 int (*put_cb) (const SSL_CIPHER *,
1464 int empty_reneg_info_scsv = !s->renegotiate;
1465 /* Set disabled masks for this session */
1466 ssl_set_client_disabled(s);
1472 put_cb = s->method->put_cipher_by_char;
1474 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1475 c = sk_SSL_CIPHER_value(sk, i);
1476 /* Skip disabled ciphers */
1477 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1479 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1480 if (c->id == SSL3_CK_SCSV) {
1481 if (!empty_reneg_info_scsv)
1484 empty_reneg_info_scsv = 0;
1491 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1495 if (empty_reneg_info_scsv) {
1496 static SSL_CIPHER scsv = {
1497 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1499 j = put_cb(&scsv, p);
1501 #ifdef OPENSSL_RI_DEBUG
1503 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1506 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1507 static SSL_CIPHER scsv = {
1508 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1510 j = put_cb(&scsv, p);
1518 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1520 STACK_OF(SSL_CIPHER) **skp)
1522 const SSL_CIPHER *c;
1523 STACK_OF(SSL_CIPHER) *sk;
1527 s->s3->send_connection_binding = 0;
1529 n = ssl_put_cipher_by_char(s, NULL, NULL);
1530 if (n == 0 || (num % n) != 0) {
1531 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1532 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1535 if ((skp == NULL) || (*skp == NULL))
1536 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1539 sk_SSL_CIPHER_zero(sk);
1542 if (s->cert->ciphers_raw)
1543 OPENSSL_free(s->cert->ciphers_raw);
1544 s->cert->ciphers_raw = BUF_memdup(p, num);
1545 if (s->cert->ciphers_raw == NULL) {
1546 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1549 s->cert->ciphers_rawlen = (size_t)num;
1551 for (i = 0; i < num; i += n) {
1552 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1553 if (s->s3 && (n != 3 || !p[0]) &&
1554 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1555 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1556 /* SCSV fatal if renegotiating */
1557 if (s->renegotiate) {
1558 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1559 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1560 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1563 s->s3->send_connection_binding = 1;
1565 #ifdef OPENSSL_RI_DEBUG
1566 fprintf(stderr, "SCSV received by server\n");
1571 /* Check for TLS_FALLBACK_SCSV */
1572 if ((n != 3 || !p[0]) &&
1573 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1574 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1576 * The SCSV indicates that the client previously tried a higher
1577 * version. Fail if the current version is an unexpected
1580 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1581 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1582 SSL_R_INAPPROPRIATE_FALLBACK);
1584 ssl3_send_alert(s, SSL3_AL_FATAL,
1585 SSL_AD_INAPPROPRIATE_FALLBACK);
1592 c = ssl_get_cipher_by_char(s, p);
1595 if (!sk_SSL_CIPHER_push(sk, c)) {
1596 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1606 if ((skp == NULL) || (*skp == NULL))
1607 sk_SSL_CIPHER_free(sk);
1611 #ifndef OPENSSL_NO_TLSEXT
1612 /** return a servername extension value if provided in Client Hello, or NULL.
1613 * So far, only host_name types are defined (RFC 3546).
1616 const char *SSL_get_servername(const SSL *s, const int type)
1618 if (type != TLSEXT_NAMETYPE_host_name)
1621 return s->session && !s->tlsext_hostname ?
1622 s->session->tlsext_hostname : s->tlsext_hostname;
1625 int SSL_get_servername_type(const SSL *s)
1628 && (!s->tlsext_hostname ? s->session->
1629 tlsext_hostname : s->tlsext_hostname))
1630 return TLSEXT_NAMETYPE_host_name;
1635 * SSL_select_next_proto implements the standard protocol selection. It is
1636 * expected that this function is called from the callback set by
1637 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1638 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1639 * not included in the length. A byte string of length 0 is invalid. No byte
1640 * string may be truncated. The current, but experimental algorithm for
1641 * selecting the protocol is: 1) If the server doesn't support NPN then this
1642 * is indicated to the callback. In this case, the client application has to
1643 * abort the connection or have a default application level protocol. 2) If
1644 * the server supports NPN, but advertises an empty list then the client
1645 * selects the first protcol in its list, but indicates via the API that this
1646 * fallback case was enacted. 3) Otherwise, the client finds the first
1647 * protocol in the server's list that it supports and selects this protocol.
1648 * This is because it's assumed that the server has better information about
1649 * which protocol a client should use. 4) If the client doesn't support any
1650 * of the server's advertised protocols, then this is treated the same as
1651 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1652 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1654 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1655 const unsigned char *server,
1656 unsigned int server_len,
1657 const unsigned char *client,
1658 unsigned int client_len)
1661 const unsigned char *result;
1662 int status = OPENSSL_NPN_UNSUPPORTED;
1665 * For each protocol in server preference order, see if we support it.
1667 for (i = 0; i < server_len;) {
1668 for (j = 0; j < client_len;) {
1669 if (server[i] == client[j] &&
1670 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1671 /* We found a match */
1672 result = &server[i];
1673 status = OPENSSL_NPN_NEGOTIATED;
1683 /* There's no overlap between our protocols and the server's list. */
1685 status = OPENSSL_NPN_NO_OVERLAP;
1688 *out = (unsigned char *)result + 1;
1689 *outlen = result[0];
1693 # ifndef OPENSSL_NO_NEXTPROTONEG
1695 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1696 * client's requested protocol for this connection and returns 0. If the
1697 * client didn't request any protocol, then *data is set to NULL. Note that
1698 * the client can request any protocol it chooses. The value returned from
1699 * this function need not be a member of the list of supported protocols
1700 * provided by the callback.
1702 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1705 *data = s->next_proto_negotiated;
1709 *len = s->next_proto_negotiated_len;
1714 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1715 * a TLS server needs a list of supported protocols for Next Protocol
1716 * Negotiation. The returned list must be in wire format. The list is
1717 * returned by setting |out| to point to it and |outlen| to its length. This
1718 * memory will not be modified, but one should assume that the SSL* keeps a
1719 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1720 * wishes to advertise. Otherwise, no such extension will be included in the
1723 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1724 int (*cb) (SSL *ssl,
1727 unsigned int *outlen,
1728 void *arg), void *arg)
1730 ctx->next_protos_advertised_cb = cb;
1731 ctx->next_protos_advertised_cb_arg = arg;
1735 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1736 * client needs to select a protocol from the server's provided list. |out|
1737 * must be set to point to the selected protocol (which may be within |in|).
1738 * The length of the protocol name must be written into |outlen|. The
1739 * server's advertised protocols are provided in |in| and |inlen|. The
1740 * callback can assume that |in| is syntactically valid. The client must
1741 * select a protocol. It is fatal to the connection if this callback returns
1742 * a value other than SSL_TLSEXT_ERR_OK.
1744 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1745 int (*cb) (SSL *s, unsigned char **out,
1746 unsigned char *outlen,
1747 const unsigned char *in,
1749 void *arg), void *arg)
1751 ctx->next_proto_select_cb = cb;
1752 ctx->next_proto_select_cb_arg = arg;
1757 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1758 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1759 * length-prefixed strings). Returns 0 on success.
1761 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1762 unsigned protos_len)
1764 if (ctx->alpn_client_proto_list)
1765 OPENSSL_free(ctx->alpn_client_proto_list);
1767 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1768 if (!ctx->alpn_client_proto_list)
1770 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1771 ctx->alpn_client_proto_list_len = protos_len;
1777 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1778 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1779 * length-prefixed strings). Returns 0 on success.
1781 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1782 unsigned protos_len)
1784 if (ssl->alpn_client_proto_list)
1785 OPENSSL_free(ssl->alpn_client_proto_list);
1787 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1788 if (!ssl->alpn_client_proto_list)
1790 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1791 ssl->alpn_client_proto_list_len = protos_len;
1797 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1798 * called during ClientHello processing in order to select an ALPN protocol
1799 * from the client's list of offered protocols.
1801 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1802 int (*cb) (SSL *ssl,
1803 const unsigned char **out,
1804 unsigned char *outlen,
1805 const unsigned char *in,
1807 void *arg), void *arg)
1809 ctx->alpn_select_cb = cb;
1810 ctx->alpn_select_cb_arg = arg;
1814 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1815 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1816 * (not including the leading length-prefix byte). If the server didn't
1817 * respond with a negotiated protocol then |*len| will be zero.
1819 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1824 *data = ssl->s3->alpn_selected;
1828 *len = ssl->s3->alpn_selected_len;
1831 #endif /* !OPENSSL_NO_TLSEXT */
1833 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1834 const char *label, size_t llen,
1835 const unsigned char *p, size_t plen,
1838 if (s->version < TLS1_VERSION)
1841 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1846 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1851 ((unsigned int)a->session_id[0]) |
1852 ((unsigned int)a->session_id[1] << 8L) |
1853 ((unsigned long)a->session_id[2] << 16L) |
1854 ((unsigned long)a->session_id[3] << 24L);
1859 * NB: If this function (or indeed the hash function which uses a sort of
1860 * coarser function than this one) is changed, ensure
1861 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1862 * being able to construct an SSL_SESSION that will collide with any existing
1863 * session with a matching session ID.
1865 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1867 if (a->ssl_version != b->ssl_version)
1869 if (a->session_id_length != b->session_id_length)
1871 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1875 * These wrapper functions should remain rather than redeclaring
1876 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1877 * variable. The reason is that the functions aren't static, they're exposed
1880 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1881 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1883 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1885 SSL_CTX *ret = NULL;
1888 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1892 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1893 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1897 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1898 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1901 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1905 memset(ret, 0, sizeof(SSL_CTX));
1909 ret->cert_store = NULL;
1910 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1911 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1912 ret->session_cache_head = NULL;
1913 ret->session_cache_tail = NULL;
1915 /* We take the system default */
1916 ret->session_timeout = meth->get_timeout();
1918 ret->new_session_cb = 0;
1919 ret->remove_session_cb = 0;
1920 ret->get_session_cb = 0;
1921 ret->generate_session_id = 0;
1923 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1925 ret->references = 1;
1926 ret->quiet_shutdown = 0;
1927 ret->info_callback = NULL;
1928 ret->app_verify_callback = 0;
1929 ret->app_verify_arg = NULL;
1930 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1931 ret->read_ahead = 0;
1932 ret->msg_callback = 0;
1933 ret->msg_callback_arg = NULL;
1934 ret->verify_mode = SSL_VERIFY_NONE;
1935 ret->sid_ctx_length = 0;
1936 ret->default_verify_callback = NULL;
1937 if ((ret->cert = ssl_cert_new()) == NULL)
1940 ret->default_passwd_callback = 0;
1941 ret->default_passwd_callback_userdata = NULL;
1942 ret->client_cert_cb = 0;
1943 ret->app_gen_cookie_cb = 0;
1944 ret->app_verify_cookie_cb = 0;
1946 ret->sessions = lh_SSL_SESSION_new();
1947 if (ret->sessions == NULL)
1949 ret->cert_store = X509_STORE_new();
1950 if (ret->cert_store == NULL)
1953 if(!ssl_create_cipher_list(ret->method,
1954 &ret->cipher_list, &ret->cipher_list_by_id,
1955 SSL_DEFAULT_CIPHER_LIST, ret->cert)
1956 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1957 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1961 ret->param = X509_VERIFY_PARAM_new();
1965 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1966 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1969 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1970 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1974 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1977 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1979 ret->extra_certs = NULL;
1980 /* No compression for DTLS */
1981 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1982 ret->comp_methods = SSL_COMP_get_compression_methods();
1984 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1986 #ifndef OPENSSL_NO_TLSEXT
1987 ret->tlsext_servername_callback = 0;
1988 ret->tlsext_servername_arg = NULL;
1989 /* Setup RFC4507 ticket keys */
1990 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1991 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1992 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1993 ret->options |= SSL_OP_NO_TICKET;
1995 ret->tlsext_status_cb = 0;
1996 ret->tlsext_status_arg = NULL;
1998 # ifndef OPENSSL_NO_NEXTPROTONEG
1999 ret->next_protos_advertised_cb = 0;
2000 ret->next_proto_select_cb = 0;
2003 #ifndef OPENSSL_NO_PSK
2004 ret->psk_identity_hint = NULL;
2005 ret->psk_client_callback = NULL;
2006 ret->psk_server_callback = NULL;
2008 #ifndef OPENSSL_NO_SRP
2009 if(!SSL_CTX_SRP_CTX_init(ret))
2012 #ifndef OPENSSL_NO_ENGINE
2013 ret->client_cert_engine = NULL;
2014 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2015 # define eng_strx(x) #x
2016 # define eng_str(x) eng_strx(x)
2017 /* Use specific client engine automatically... ignore errors */
2020 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2023 ENGINE_load_builtin_engines();
2024 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2026 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2032 * Default is to connect to non-RI servers. When RI is more widely
2033 * deployed might change this.
2035 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2039 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2046 void SSL_CTX_free(SSL_CTX *a)
2053 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2055 REF_PRINT("SSL_CTX", a);
2061 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
2067 X509_VERIFY_PARAM_free(a->param);
2070 * Free internal session cache. However: the remove_cb() may reference
2071 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2072 * after the sessions were flushed.
2073 * As the ex_data handling routines might also touch the session cache,
2074 * the most secure solution seems to be: empty (flush) the cache, then
2075 * free ex_data, then finally free the cache.
2076 * (See ticket [openssl.org #212].)
2078 if (a->sessions != NULL)
2079 SSL_CTX_flush_sessions(a, 0);
2081 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2083 if (a->sessions != NULL)
2084 lh_SSL_SESSION_free(a->sessions);
2086 if (a->cert_store != NULL)
2087 X509_STORE_free(a->cert_store);
2088 if (a->cipher_list != NULL)
2089 sk_SSL_CIPHER_free(a->cipher_list);
2090 if (a->cipher_list_by_id != NULL)
2091 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2092 if (a->cert != NULL)
2093 ssl_cert_free(a->cert);
2094 if (a->client_CA != NULL)
2095 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2096 if (a->extra_certs != NULL)
2097 sk_X509_pop_free(a->extra_certs, X509_free);
2098 a->comp_methods = NULL;
2100 #ifndef OPENSSL_NO_SRTP
2101 if (a->srtp_profiles)
2102 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2105 #ifndef OPENSSL_NO_PSK
2106 if (a->psk_identity_hint)
2107 OPENSSL_free(a->psk_identity_hint);
2109 #ifndef OPENSSL_NO_SRP
2110 SSL_CTX_SRP_CTX_free(a);
2112 #ifndef OPENSSL_NO_ENGINE
2113 if (a->client_cert_engine)
2114 ENGINE_finish(a->client_cert_engine);
2117 #ifndef OPENSSL_NO_TLSEXT
2118 # ifndef OPENSSL_NO_EC
2119 if (a->tlsext_ecpointformatlist)
2120 OPENSSL_free(a->tlsext_ecpointformatlist);
2121 if (a->tlsext_ellipticcurvelist)
2122 OPENSSL_free(a->tlsext_ellipticcurvelist);
2123 # endif /* OPENSSL_NO_EC */
2124 if (a->alpn_client_proto_list != NULL)
2125 OPENSSL_free(a->alpn_client_proto_list);
2131 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2133 ctx->default_passwd_callback = cb;
2136 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2138 ctx->default_passwd_callback_userdata = u;
2141 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2142 int (*cb) (X509_STORE_CTX *, void *),
2145 ctx->app_verify_callback = cb;
2146 ctx->app_verify_arg = arg;
2149 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2150 int (*cb) (int, X509_STORE_CTX *))
2152 ctx->verify_mode = mode;
2153 ctx->default_verify_callback = cb;
2156 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2158 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2161 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2164 ssl_cert_set_cert_cb(c->cert, cb, arg);
2167 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2169 ssl_cert_set_cert_cb(s->cert, cb, arg);
2172 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2175 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2176 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2177 int rsa_tmp_export, dh_tmp_export, kl;
2178 unsigned long mask_k, mask_a, emask_k, emask_a;
2179 #ifndef OPENSSL_NO_EC
2180 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2181 int have_ecdh_tmp, ecdh_ok;
2183 EVP_PKEY *ecc_pkey = NULL;
2184 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2189 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2191 #ifndef OPENSSL_NO_RSA
2192 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2193 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2194 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2196 rsa_tmp = rsa_tmp_export = 0;
2198 #ifndef OPENSSL_NO_DH
2199 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2200 dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2202 && DH_size(c->dh_tmp) * 8 <= kl));
2204 dh_tmp = dh_tmp_export = 0;
2207 #ifndef OPENSSL_NO_EC
2208 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2210 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2211 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID;
2212 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2213 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2214 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2215 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2216 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2217 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2218 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID;
2219 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2220 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2221 /* FIX THIS EAY EAY EAY */
2222 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID;
2223 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2224 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2225 #ifndef OPENSSL_NO_EC
2226 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID;
2235 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2236 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2237 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2240 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2241 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2242 mask_k |= SSL_kGOST;
2243 mask_a |= SSL_aGOST01;
2245 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2246 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2247 mask_k |= SSL_kGOST;
2248 mask_a |= SSL_aGOST94;
2251 if (rsa_enc || (rsa_tmp && rsa_sign))
2253 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2254 emask_k |= SSL_kRSA;
2257 emask_k |= SSL_kDHE;
2265 emask_k |= SSL_kDHr;
2270 emask_k |= SSL_kDHd;
2272 if (emask_k & (SSL_kDHr | SSL_kDHd))
2275 if (rsa_enc || rsa_sign) {
2277 emask_a |= SSL_aRSA;
2282 emask_a |= SSL_aDSS;
2285 mask_a |= SSL_aNULL;
2286 emask_a |= SSL_aNULL;
2288 #ifndef OPENSSL_NO_KRB5
2289 mask_k |= SSL_kKRB5;
2290 mask_a |= SSL_aKRB5;
2291 emask_k |= SSL_kKRB5;
2292 emask_a |= SSL_aKRB5;
2296 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2297 * depending on the key usage extension.
2299 #ifndef OPENSSL_NO_EC
2300 if (have_ecc_cert) {
2301 cpk = &c->pkeys[SSL_PKEY_ECC];
2303 /* This call populates extension flags (ex_flags) */
2304 X509_check_purpose(x, -1, 0);
2305 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2306 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2307 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2308 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2309 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2311 ecc_pkey = X509_get_pubkey(x);
2312 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2313 EVP_PKEY_free(ecc_pkey);
2314 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2315 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2316 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2320 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2321 mask_k |= SSL_kECDHr;
2322 mask_a |= SSL_aECDH;
2323 if (ecc_pkey_size <= 163) {
2324 emask_k |= SSL_kECDHr;
2325 emask_a |= SSL_aECDH;
2329 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2330 mask_k |= SSL_kECDHe;
2331 mask_a |= SSL_aECDH;
2332 if (ecc_pkey_size <= 163) {
2333 emask_k |= SSL_kECDHe;
2334 emask_a |= SSL_aECDH;
2339 mask_a |= SSL_aECDSA;
2340 emask_a |= SSL_aECDSA;
2345 #ifndef OPENSSL_NO_EC
2346 if (have_ecdh_tmp) {
2347 mask_k |= SSL_kECDHE;
2348 emask_k |= SSL_kECDHE;
2352 #ifndef OPENSSL_NO_PSK
2355 emask_k |= SSL_kPSK;
2356 emask_a |= SSL_aPSK;
2361 c->export_mask_k = emask_k;
2362 c->export_mask_a = emask_a;
2366 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2367 #define ku_reject(x, usage) \
2368 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2370 #ifndef OPENSSL_NO_EC
2372 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2374 unsigned long alg_k, alg_a;
2375 EVP_PKEY *pkey = NULL;
2377 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2378 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2380 alg_k = cs->algorithm_mkey;
2381 alg_a = cs->algorithm_auth;
2383 if (SSL_C_IS_EXPORT(cs)) {
2384 /* ECDH key length in export ciphers must be <= 163 bits */
2385 pkey = X509_get_pubkey(x);
2388 keysize = EVP_PKEY_bits(pkey);
2389 EVP_PKEY_free(pkey);
2394 /* This call populates the ex_flags field correctly */
2395 X509_check_purpose(x, -1, 0);
2396 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2397 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2398 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2400 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2401 /* key usage, if present, must allow key agreement */
2402 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2403 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2404 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2407 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2408 /* signature alg must be ECDSA */
2409 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2410 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2411 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2415 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2416 /* signature alg must be RSA */
2418 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2419 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2420 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2425 if (alg_a & SSL_aECDSA) {
2426 /* key usage, if present, must allow signing */
2427 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2428 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2429 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2434 return 1; /* all checks are ok */
2439 static int ssl_get_server_cert_index(const SSL *s)
2442 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2443 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2444 idx = SSL_PKEY_RSA_SIGN;
2446 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2450 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2456 if (!s->s3 || !s->s3->tmp.new_cipher)
2458 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2460 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2462 * Broken protocol test: return last used certificate: which may mismatch
2465 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2469 i = ssl_get_server_cert_index(s);
2471 /* This may or may not be an error. */
2476 return &c->pkeys[i];
2479 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2482 unsigned long alg_a;
2486 alg_a = cipher->algorithm_auth;
2489 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2491 * Broken protocol test: use last key: which may mismatch the one
2494 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2495 idx = c->key - c->pkeys;
2499 if ((alg_a & SSL_aDSS) &&
2500 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2501 idx = SSL_PKEY_DSA_SIGN;
2502 else if (alg_a & SSL_aRSA) {
2503 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2504 idx = SSL_PKEY_RSA_SIGN;
2505 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2506 idx = SSL_PKEY_RSA_ENC;
2507 } else if ((alg_a & SSL_aECDSA) &&
2508 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2511 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2515 *pmd = c->pkeys[idx].digest;
2516 return c->pkeys[idx].privatekey;
2519 #ifndef OPENSSL_NO_TLSEXT
2520 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2521 size_t *serverinfo_length)
2525 *serverinfo_length = 0;
2528 i = ssl_get_server_cert_index(s);
2532 if (c->pkeys[i].serverinfo == NULL)
2535 *serverinfo = c->pkeys[i].serverinfo;
2536 *serverinfo_length = c->pkeys[i].serverinfo_length;
2541 void ssl_update_cache(SSL *s, int mode)
2546 * If the session_id_length is 0, we are not supposed to cache it, and it
2547 * would be rather hard to do anyway :-)
2549 if (s->session->session_id_length == 0)
2552 i = s->session_ctx->session_cache_mode;
2553 if ((i & mode) && (!s->hit)
2554 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2555 || SSL_CTX_add_session(s->session_ctx, s->session))
2556 && (s->session_ctx->new_session_cb != NULL)) {
2557 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2558 if (!s->session_ctx->new_session_cb(s, s->session))
2559 SSL_SESSION_free(s->session);
2562 /* auto flush every 255 connections */
2563 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2564 if ((((mode & SSL_SESS_CACHE_CLIENT)
2565 ? s->session_ctx->stats.sess_connect_good
2566 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2567 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2572 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2577 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2582 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2587 if (s->method != meth) {
2588 if (s->handshake_func != NULL)
2589 conn = (s->handshake_func == s->method->ssl_connect);
2591 if (s->method->version == meth->version)
2594 s->method->ssl_free(s);
2596 ret = s->method->ssl_new(s);
2600 s->handshake_func = meth->ssl_connect;
2602 s->handshake_func = meth->ssl_accept;
2607 int SSL_get_error(const SSL *s, int i)
2614 return (SSL_ERROR_NONE);
2617 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2618 * where we do encode the error
2620 if ((l = ERR_peek_error()) != 0) {
2621 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2622 return (SSL_ERROR_SYSCALL);
2624 return (SSL_ERROR_SSL);
2627 if ((i < 0) && SSL_want_read(s)) {
2628 bio = SSL_get_rbio(s);
2629 if (BIO_should_read(bio))
2630 return (SSL_ERROR_WANT_READ);
2631 else if (BIO_should_write(bio))
2633 * This one doesn't make too much sense ... We never try to write
2634 * to the rbio, and an application program where rbio and wbio
2635 * are separate couldn't even know what it should wait for.
2636 * However if we ever set s->rwstate incorrectly (so that we have
2637 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2638 * wbio *are* the same, this test works around that bug; so it
2639 * might be safer to keep it.
2641 return (SSL_ERROR_WANT_WRITE);
2642 else if (BIO_should_io_special(bio)) {
2643 reason = BIO_get_retry_reason(bio);
2644 if (reason == BIO_RR_CONNECT)
2645 return (SSL_ERROR_WANT_CONNECT);
2646 else if (reason == BIO_RR_ACCEPT)
2647 return (SSL_ERROR_WANT_ACCEPT);
2649 return (SSL_ERROR_SYSCALL); /* unknown */
2653 if ((i < 0) && SSL_want_write(s)) {
2654 bio = SSL_get_wbio(s);
2655 if (BIO_should_write(bio))
2656 return (SSL_ERROR_WANT_WRITE);
2657 else if (BIO_should_read(bio))
2659 * See above (SSL_want_read(s) with BIO_should_write(bio))
2661 return (SSL_ERROR_WANT_READ);
2662 else if (BIO_should_io_special(bio)) {
2663 reason = BIO_get_retry_reason(bio);
2664 if (reason == BIO_RR_CONNECT)
2665 return (SSL_ERROR_WANT_CONNECT);
2666 else if (reason == BIO_RR_ACCEPT)
2667 return (SSL_ERROR_WANT_ACCEPT);
2669 return (SSL_ERROR_SYSCALL);
2672 if ((i < 0) && SSL_want_x509_lookup(s)) {
2673 return (SSL_ERROR_WANT_X509_LOOKUP);
2677 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2678 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2679 return (SSL_ERROR_ZERO_RETURN);
2681 return (SSL_ERROR_SYSCALL);
2684 int SSL_do_handshake(SSL *s)
2688 if (s->handshake_func == NULL) {
2689 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2693 s->method->ssl_renegotiate_check(s);
2695 if (SSL_in_init(s) || SSL_in_before(s)) {
2696 ret = s->handshake_func(s);
2702 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2703 * calls will reset it
2705 void SSL_set_accept_state(SSL *s)
2709 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2710 s->handshake_func = s->method->ssl_accept;
2711 /* clear the current cipher */
2712 ssl_clear_cipher_ctx(s);
2713 ssl_clear_hash_ctx(&s->read_hash);
2714 ssl_clear_hash_ctx(&s->write_hash);
2717 void SSL_set_connect_state(SSL *s)
2721 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2722 s->handshake_func = s->method->ssl_connect;
2723 /* clear the current cipher */
2724 ssl_clear_cipher_ctx(s);
2725 ssl_clear_hash_ctx(&s->read_hash);
2726 ssl_clear_hash_ctx(&s->write_hash);
2729 int ssl_undefined_function(SSL *s)
2731 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2735 int ssl_undefined_void_function(void)
2737 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2738 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2742 int ssl_undefined_const_function(const SSL *s)
2744 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2745 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2749 SSL_METHOD *ssl_bad_method(int ver)
2751 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2755 const char *SSL_get_version(const SSL *s)
2757 if (s->version == TLS1_2_VERSION)
2759 else if (s->version == TLS1_1_VERSION)
2761 else if (s->version == TLS1_VERSION)
2763 else if (s->version == SSL3_VERSION)
2765 else if (s->version == DTLS1_BAD_VER)
2766 return ("DTLSv0.9");
2767 else if (s->version == DTLS1_VERSION)
2769 else if (s->version == DTLS1_2_VERSION)
2770 return ("DTLSv1.2");
2775 SSL *SSL_dup(SSL *s)
2777 STACK_OF(X509_NAME) *sk;
2782 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2785 ret->version = s->version;
2786 ret->type = s->type;
2787 ret->method = s->method;
2789 if (s->session != NULL) {
2790 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2791 if(!SSL_copy_session_id(ret, s))
2795 * No session has been established yet, so we have to expect that
2796 * s->cert or ret->cert will be changed later -- they should not both
2797 * point to the same object, and thus we can't use
2798 * SSL_copy_session_id.
2801 ret->method->ssl_free(ret);
2802 ret->method = s->method;
2803 ret->method->ssl_new(ret);
2805 if (s->cert != NULL) {
2806 if (ret->cert != NULL) {
2807 ssl_cert_free(ret->cert);
2809 ret->cert = ssl_cert_dup(s->cert);
2810 if (ret->cert == NULL)
2814 if(!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
2818 ret->options = s->options;
2819 ret->mode = s->mode;
2820 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2821 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2822 ret->msg_callback = s->msg_callback;
2823 ret->msg_callback_arg = s->msg_callback_arg;
2824 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2825 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2826 ret->generate_session_id = s->generate_session_id;
2828 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2830 ret->debug = s->debug;
2832 /* copy app data, a little dangerous perhaps */
2833 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2836 /* setup rbio, and wbio */
2837 if (s->rbio != NULL) {
2838 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2841 if (s->wbio != NULL) {
2842 if (s->wbio != s->rbio) {
2843 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2846 ret->wbio = ret->rbio;
2848 ret->rwstate = s->rwstate;
2849 ret->in_handshake = s->in_handshake;
2850 ret->handshake_func = s->handshake_func;
2851 ret->server = s->server;
2852 ret->renegotiate = s->renegotiate;
2853 ret->new_session = s->new_session;
2854 ret->quiet_shutdown = s->quiet_shutdown;
2855 ret->shutdown = s->shutdown;
2856 ret->state = s->state; /* SSL_dup does not really work at any state,
2858 ret->rstate = s->rstate;
2859 ret->init_num = 0; /* would have to copy ret->init_buf,
2860 * ret->init_msg, ret->init_num,
2864 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2866 /* dup the cipher_list and cipher_list_by_id stacks */
2867 if (s->cipher_list != NULL) {
2868 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2871 if (s->cipher_list_by_id != NULL)
2872 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2876 /* Dup the client_CA list */
2877 if (s->client_CA != NULL) {
2878 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2880 ret->client_CA = sk;
2881 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2882 xn = sk_X509_NAME_value(sk, i);
2883 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2899 void ssl_clear_cipher_ctx(SSL *s)
2901 if (s->enc_read_ctx != NULL) {
2902 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2903 OPENSSL_free(s->enc_read_ctx);
2904 s->enc_read_ctx = NULL;
2906 if (s->enc_write_ctx != NULL) {
2907 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2908 OPENSSL_free(s->enc_write_ctx);
2909 s->enc_write_ctx = NULL;
2911 #ifndef OPENSSL_NO_COMP
2912 if (s->expand != NULL) {
2913 COMP_CTX_free(s->expand);
2916 if (s->compress != NULL) {
2917 COMP_CTX_free(s->compress);
2923 X509 *SSL_get_certificate(const SSL *s)
2925 if (s->cert != NULL)
2926 return (s->cert->key->x509);
2931 EVP_PKEY *SSL_get_privatekey(const SSL *s)
2933 if (s->cert != NULL)
2934 return (s->cert->key->privatekey);
2939 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2941 if (ctx->cert != NULL)
2942 return ctx->cert->key->x509;
2947 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2949 if (ctx->cert != NULL)
2950 return ctx->cert->key->privatekey;
2955 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2957 if ((s->session != NULL) && (s->session->cipher != NULL))
2958 return (s->session->cipher);
2962 #ifdef OPENSSL_NO_COMP
2963 const void *SSL_get_current_compression(SSL *s)
2968 const void *SSL_get_current_expansion(SSL *s)
2974 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2976 if (s->compress != NULL)
2977 return (s->compress->meth);
2981 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2983 if (s->expand != NULL)
2984 return (s->expand->meth);
2989 int ssl_init_wbio_buffer(SSL *s, int push)
2993 if (s->bbio == NULL) {
2994 bbio = BIO_new(BIO_f_buffer());
3000 if (s->bbio == s->wbio)
3001 s->wbio = BIO_pop(s->wbio);
3003 (void)BIO_reset(bbio);
3004 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3005 if (!BIO_set_read_buffer_size(bbio, 1)) {
3006 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3010 if (s->wbio != bbio)
3011 s->wbio = BIO_push(bbio, s->wbio);
3013 if (s->wbio == bbio)
3014 s->wbio = BIO_pop(bbio);
3019 void ssl_free_wbio_buffer(SSL *s)
3021 if (s->bbio == NULL)
3024 if (s->bbio == s->wbio) {
3025 /* remove buffering */
3026 s->wbio = BIO_pop(s->wbio);
3027 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
3028 * adding one more preprocessor symbol */
3029 assert(s->wbio != NULL);
3036 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3038 ctx->quiet_shutdown = mode;
3041 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3043 return (ctx->quiet_shutdown);
3046 void SSL_set_quiet_shutdown(SSL *s, int mode)
3048 s->quiet_shutdown = mode;
3051 int SSL_get_quiet_shutdown(const SSL *s)
3053 return (s->quiet_shutdown);
3056 void SSL_set_shutdown(SSL *s, int mode)
3061 int SSL_get_shutdown(const SSL *s)
3063 return (s->shutdown);
3066 int SSL_version(const SSL *s)
3068 return (s->version);
3071 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3076 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3079 if (ssl->ctx == ctx)
3081 #ifndef OPENSSL_NO_TLSEXT
3083 ctx = ssl->initial_ctx;
3085 new_cert = ssl_cert_dup(ctx->cert);
3086 if (new_cert == NULL) {
3089 /* Preserve any already negotiated parameters */
3091 new_cert->peer_sigalgs = ssl->cert->peer_sigalgs;
3092 new_cert->peer_sigalgslen = ssl->cert->peer_sigalgslen;
3093 ssl->cert->peer_sigalgs = NULL;
3094 new_cert->ciphers_raw = ssl->cert->ciphers_raw;
3095 new_cert->ciphers_rawlen = ssl->cert->ciphers_rawlen;
3096 ssl->cert->ciphers_raw = NULL;
3098 ssl_cert_free(ssl->cert);
3099 ssl->cert = new_cert;
3102 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3103 * so setter APIs must prevent invalid lengths from entering the system.
3105 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3108 * If the session ID context matches that of the parent SSL_CTX,
3109 * inherit it from the new SSL_CTX as well. If however the context does
3110 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3111 * leave it unchanged.
3113 if ((ssl->ctx != NULL) &&
3114 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3115 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3116 ssl->sid_ctx_length = ctx->sid_ctx_length;
3117 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3120 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3121 if (ssl->ctx != NULL)
3122 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3128 #ifndef OPENSSL_NO_STDIO
3129 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3131 return (X509_STORE_set_default_paths(ctx->cert_store));
3134 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3137 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3141 void SSL_set_info_callback(SSL *ssl,
3142 void (*cb) (const SSL *ssl, int type, int val))
3144 ssl->info_callback = cb;
3148 * One compiler (Diab DCC) doesn't like argument names in returned function
3151 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3154 return ssl->info_callback;
3157 int SSL_state(const SSL *ssl)
3159 return (ssl->state);
3162 void SSL_set_state(SSL *ssl, int state)
3167 void SSL_set_verify_result(SSL *ssl, long arg)
3169 ssl->verify_result = arg;
3172 long SSL_get_verify_result(const SSL *ssl)
3174 return (ssl->verify_result);
3177 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3178 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3180 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3181 new_func, dup_func, free_func);
3184 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3186 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3189 void *SSL_get_ex_data(const SSL *s, int idx)
3191 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3194 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3195 CRYPTO_EX_dup *dup_func,
3196 CRYPTO_EX_free *free_func)
3198 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3199 new_func, dup_func, free_func);
3202 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3204 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3207 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3209 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3217 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3219 return (ctx->cert_store);
3222 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3224 if (ctx->cert_store != NULL)
3225 X509_STORE_free(ctx->cert_store);
3226 ctx->cert_store = store;
3229 int SSL_want(const SSL *s)
3231 return (s->rwstate);
3235 * \brief Set the callback for generating temporary RSA keys.
3236 * \param ctx the SSL context.
3237 * \param cb the callback
3240 #ifndef OPENSSL_NO_RSA
3241 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3245 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3248 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3252 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3258 * \brief The RSA temporary key callback function.
3259 * \param ssl the SSL session.
3260 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3261 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3262 * of the required key in bits.
3263 * \return the temporary RSA key.
3264 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3267 RSA *cb(SSL *ssl, int is_export, int keylength)
3273 * \brief Set the callback for generating temporary DH keys.
3274 * \param ctx the SSL context.
3275 * \param dh the callback
3278 #ifndef OPENSSL_NO_DH
3279 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3280 DH *(*dh) (SSL *ssl, int is_export,
3283 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3286 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3289 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3293 #ifndef OPENSSL_NO_EC
3294 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3295 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3298 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3299 (void (*)(void))ecdh);
3302 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3303 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3306 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3310 #ifndef OPENSSL_NO_PSK
3311 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3313 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3314 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3315 SSL_R_DATA_LENGTH_TOO_LONG);
3318 if (ctx->psk_identity_hint != NULL)
3319 OPENSSL_free(ctx->psk_identity_hint);
3320 if (identity_hint != NULL) {
3321 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3322 if (ctx->psk_identity_hint == NULL)
3325 ctx->psk_identity_hint = NULL;
3329 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3334 if (s->session == NULL)
3335 return 1; /* session not created yet, ignored */
3337 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3338 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3341 if (s->session->psk_identity_hint != NULL)
3342 OPENSSL_free(s->session->psk_identity_hint);
3343 if (identity_hint != NULL) {
3344 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3345 if (s->session->psk_identity_hint == NULL)
3348 s->session->psk_identity_hint = NULL;
3352 const char *SSL_get_psk_identity_hint(const SSL *s)
3354 if (s == NULL || s->session == NULL)
3356 return (s->session->psk_identity_hint);
3359 const char *SSL_get_psk_identity(const SSL *s)
3361 if (s == NULL || s->session == NULL)
3363 return (s->session->psk_identity);
3366 void SSL_set_psk_client_callback(SSL *s,
3367 unsigned int (*cb) (SSL *ssl,
3376 s->psk_client_callback = cb;
3379 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3380 unsigned int (*cb) (SSL *ssl,
3389 ctx->psk_client_callback = cb;
3392 void SSL_set_psk_server_callback(SSL *s,
3393 unsigned int (*cb) (SSL *ssl,
3394 const char *identity,
3399 s->psk_server_callback = cb;
3402 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3403 unsigned int (*cb) (SSL *ssl,
3404 const char *identity,
3409 ctx->psk_server_callback = cb;
3413 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3414 void (*cb) (int write_p, int version,
3415 int content_type, const void *buf,
3416 size_t len, SSL *ssl, void *arg))
3418 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3421 void SSL_set_msg_callback(SSL *ssl,
3422 void (*cb) (int write_p, int version,
3423 int content_type, const void *buf,
3424 size_t len, SSL *ssl, void *arg))
3426 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3429 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3430 int (*cb) (SSL *ssl,
3434 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3435 (void (*)(void))cb);
3438 void SSL_set_not_resumable_session_callback(SSL *ssl,
3439 int (*cb) (SSL *ssl,
3440 int is_forward_secure))
3442 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3443 (void (*)(void))cb);
3447 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3448 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3449 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3453 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3455 ssl_clear_hash_ctx(hash);
3456 *hash = EVP_MD_CTX_create();
3458 EVP_DigestInit_ex(*hash, md, NULL);
3462 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3466 EVP_MD_CTX_destroy(*hash);
3470 /* Retrieve handshake hashes */
3471 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3473 unsigned char *p = out;
3478 EVP_MD_CTX_init(&ctx);
3479 for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
3480 if (mask & ssl_get_algorithm2(s)) {
3481 int hashsize = EVP_MD_size(md);
3482 EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
3483 if (!hdgst || hashsize < 0 || hashsize > outlen)
3485 if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
3487 if (!EVP_DigestFinal_ex(&ctx, p, NULL))
3495 EVP_MD_CTX_cleanup(&ctx);
3499 void SSL_set_debug(SSL *s, int debug)
3504 int SSL_cache_hit(SSL *s)
3509 int SSL_is_server(SSL *s)
3514 void SSL_set_security_level(SSL *s, int level)
3516 s->cert->sec_level = level;
3519 int SSL_get_security_level(const SSL *s)
3521 return s->cert->sec_level;
3524 void SSL_set_security_callback(SSL *s,
3525 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3526 int bits, int nid, void *other,
3529 s->cert->sec_cb = cb;
3532 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3534 void *other, void *ex) {
3535 return s->cert->sec_cb;
3538 void SSL_set0_security_ex_data(SSL *s, void *ex)
3540 s->cert->sec_ex = ex;
3543 void *SSL_get0_security_ex_data(const SSL *s)
3545 return s->cert->sec_ex;
3548 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3550 ctx->cert->sec_level = level;
3553 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3555 return ctx->cert->sec_level;
3558 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3559 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3560 int bits, int nid, void *other,
3563 ctx->cert->sec_cb = cb;
3566 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3572 return ctx->cert->sec_cb;
3575 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3577 ctx->cert->sec_ex = ex;
3580 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3582 return ctx->cert->sec_ex;
3585 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);