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)
193 if (s->method == NULL) {
194 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
198 if (ssl_clear_bad_session(s)) {
199 SSL_SESSION_free(s->session);
209 * Disabled since version 1.10 of this file (early return not
210 * needed because SSL_clear is not called when doing renegotiation)
213 * This is set if we are doing dynamic renegotiation so keep
214 * the old cipher. It is sort of a SSL_clear_lite :-)
219 if (s->renegotiate) {
220 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
227 s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT);
229 s->version = s->method->version;
230 s->client_version = s->version;
231 s->rwstate = SSL_NOTHING;
232 s->rstate = SSL_ST_READ_HEADER;
234 s->read_ahead = s->ctx->read_ahead;
237 if (s->init_buf != NULL) {
238 BUF_MEM_free(s->init_buf);
242 ssl_clear_cipher_ctx(s);
243 ssl_clear_hash_ctx(&s->read_hash);
244 ssl_clear_hash_ctx(&s->write_hash);
250 * Check to see if we were changed into a different method, if so, revert
251 * back if we are not doing session-id reuse.
253 if (!s->in_handshake && (s->session == NULL)
254 && (s->method != s->ctx->method)) {
255 s->method->ssl_free(s);
256 s->method = s->ctx->method;
257 if (!s->method->ssl_new(s))
261 s->method->ssl_clear(s);
265 /** Used to change an SSL_CTXs default SSL method type */
266 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
268 STACK_OF(SSL_CIPHER) *sk;
272 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
273 &(ctx->cipher_list_by_id),
275 SSL2_VERSION ? "SSLv2" :
276 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
277 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
278 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
279 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
285 SSL *SSL_new(SSL_CTX *ctx)
290 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
293 if (ctx->method == NULL) {
294 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
298 s = (SSL *)OPENSSL_malloc(sizeof(SSL));
301 memset(s, 0, sizeof(SSL));
303 #ifndef OPENSSL_NO_KRB5
304 s->kssl_ctx = kssl_ctx_new();
305 #endif /* OPENSSL_NO_KRB5 */
307 s->options = ctx->options;
309 s->max_cert_list = ctx->max_cert_list;
312 if (ctx->cert != NULL) {
314 * Earlier library versions used to copy the pointer to the CERT, not
315 * its contents; only when setting new parameters for the per-SSL
316 * copy, ssl_cert_new would be called (and the direct reference to
317 * the per-SSL_CTX settings would be lost, but those still were
318 * indirectly accessed for various purposes, and for that reason they
319 * used to be known as s->ctx->default_cert). Now we don't look at the
320 * SSL_CTX's CERT after having duplicated it once.
323 s->cert = ssl_cert_dup(ctx->cert);
327 s->cert = NULL; /* Cannot really happen (see SSL_CTX_new) */
329 s->read_ahead = 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;
334 s->verify_depth = ctx->verify_depth;
336 s->sid_ctx_length = ctx->sid_ctx_length;
337 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
338 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
339 s->verify_callback = ctx->default_verify_callback;
340 s->generate_session_id = ctx->generate_session_id;
342 s->param = X509_VERIFY_PARAM_new();
345 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
347 s->purpose = ctx->purpose;
348 s->trust = ctx->trust;
350 s->quiet_shutdown = ctx->quiet_shutdown;
351 s->max_send_fragment = ctx->max_send_fragment;
353 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
355 #ifndef OPENSSL_NO_TLSEXT
356 s->tlsext_debug_cb = 0;
357 s->tlsext_debug_arg = NULL;
358 s->tlsext_ticket_expected = 0;
359 s->tlsext_status_type = -1;
360 s->tlsext_status_expected = 0;
361 s->tlsext_ocsp_ids = NULL;
362 s->tlsext_ocsp_exts = NULL;
363 s->tlsext_ocsp_resp = NULL;
364 s->tlsext_ocsp_resplen = -1;
365 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
366 s->initial_ctx = ctx;
367 # ifndef OPENSSL_NO_EC
368 if (ctx->tlsext_ecpointformatlist) {
369 s->tlsext_ecpointformatlist =
370 BUF_memdup(ctx->tlsext_ecpointformatlist,
371 ctx->tlsext_ecpointformatlist_length);
372 if (!s->tlsext_ecpointformatlist)
374 s->tlsext_ecpointformatlist_length =
375 ctx->tlsext_ecpointformatlist_length;
377 if (ctx->tlsext_ellipticcurvelist) {
378 s->tlsext_ellipticcurvelist =
379 BUF_memdup(ctx->tlsext_ellipticcurvelist,
380 ctx->tlsext_ellipticcurvelist_length);
381 if (!s->tlsext_ellipticcurvelist)
383 s->tlsext_ellipticcurvelist_length =
384 ctx->tlsext_ellipticcurvelist_length;
387 # ifndef OPENSSL_NO_NEXTPROTONEG
388 s->next_proto_negotiated = NULL;
391 if (s->ctx->alpn_client_proto_list) {
392 s->alpn_client_proto_list =
393 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
394 if (s->alpn_client_proto_list == NULL)
396 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
397 s->ctx->alpn_client_proto_list_len);
398 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
402 s->verify_result = X509_V_OK;
404 s->method = ctx->method;
406 if (!s->method->ssl_new(s))
409 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
413 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
415 #ifndef OPENSSL_NO_PSK
416 s->psk_client_callback = ctx->psk_client_callback;
417 s->psk_server_callback = ctx->psk_server_callback;
424 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
428 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
429 unsigned int sid_ctx_len)
431 if (sid_ctx_len > sizeof ctx->sid_ctx) {
432 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
433 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
436 ctx->sid_ctx_length = sid_ctx_len;
437 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
442 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
443 unsigned int sid_ctx_len)
445 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
446 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
447 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
450 ssl->sid_ctx_length = sid_ctx_len;
451 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
456 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
458 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
459 ctx->generate_session_id = cb;
460 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
464 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
466 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
467 ssl->generate_session_id = cb;
468 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
472 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
476 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
477 * we can "construct" a session to give us the desired check - ie. to
478 * find if there's a session in the hash table that would conflict with
479 * any new session built out of this id/id_len and the ssl_version in use
484 if (id_len > sizeof r.session_id)
487 r.ssl_version = ssl->version;
488 r.session_id_length = id_len;
489 memcpy(r.session_id, id, id_len);
491 * NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
492 * callback is calling us to check the uniqueness of a shorter ID, it
493 * must be compared as a padded-out ID because that is what it will be
494 * converted to when the callback has finished choosing it.
496 if ((r.ssl_version == SSL2_VERSION) &&
497 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) {
498 memset(r.session_id + id_len, 0, SSL2_SSL_SESSION_ID_LENGTH - id_len);
499 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
502 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
503 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
504 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
508 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
510 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
513 int SSL_set_purpose(SSL *s, int purpose)
515 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
518 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
520 return X509_VERIFY_PARAM_set_trust(s->param, trust);
523 int SSL_set_trust(SSL *s, int trust)
525 return X509_VERIFY_PARAM_set_trust(s->param, trust);
528 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
530 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
533 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
535 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
538 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
543 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
548 void SSL_certs_clear(SSL *s)
550 ssl_cert_clear_certs(s->cert);
553 void SSL_free(SSL *s)
560 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
568 fprintf(stderr, "SSL_free, bad reference count\n");
574 X509_VERIFY_PARAM_free(s->param);
576 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
578 if (s->bbio != NULL) {
579 /* If the buffering BIO is in place, pop it off */
580 if (s->bbio == s->wbio) {
581 s->wbio = BIO_pop(s->wbio);
587 BIO_free_all(s->rbio);
588 if ((s->wbio != NULL) && (s->wbio != s->rbio))
589 BIO_free_all(s->wbio);
591 if (s->init_buf != NULL)
592 BUF_MEM_free(s->init_buf);
594 /* add extra stuff */
595 if (s->cipher_list != NULL)
596 sk_SSL_CIPHER_free(s->cipher_list);
597 if (s->cipher_list_by_id != NULL)
598 sk_SSL_CIPHER_free(s->cipher_list_by_id);
600 /* Make the next call work :-) */
601 if (s->session != NULL) {
602 ssl_clear_bad_session(s);
603 SSL_SESSION_free(s->session);
606 ssl_clear_cipher_ctx(s);
607 ssl_clear_hash_ctx(&s->read_hash);
608 ssl_clear_hash_ctx(&s->write_hash);
611 ssl_cert_free(s->cert);
612 /* Free up if allocated */
614 #ifndef OPENSSL_NO_TLSEXT
615 if (s->tlsext_hostname)
616 OPENSSL_free(s->tlsext_hostname);
618 SSL_CTX_free(s->initial_ctx);
619 # ifndef OPENSSL_NO_EC
620 if (s->tlsext_ecpointformatlist)
621 OPENSSL_free(s->tlsext_ecpointformatlist);
622 if (s->tlsext_ellipticcurvelist)
623 OPENSSL_free(s->tlsext_ellipticcurvelist);
624 # endif /* OPENSSL_NO_EC */
625 if (s->tlsext_opaque_prf_input)
626 OPENSSL_free(s->tlsext_opaque_prf_input);
627 if (s->tlsext_ocsp_exts)
628 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
629 if (s->tlsext_ocsp_ids)
630 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
631 if (s->tlsext_ocsp_resp)
632 OPENSSL_free(s->tlsext_ocsp_resp);
633 if (s->alpn_client_proto_list)
634 OPENSSL_free(s->alpn_client_proto_list);
637 if (s->client_CA != NULL)
638 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
640 if (s->method != NULL)
641 s->method->ssl_free(s);
644 SSL_CTX_free(s->ctx);
646 #ifndef OPENSSL_NO_KRB5
647 if (s->kssl_ctx != NULL)
648 kssl_ctx_free(s->kssl_ctx);
649 #endif /* OPENSSL_NO_KRB5 */
651 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
652 if (s->next_proto_negotiated)
653 OPENSSL_free(s->next_proto_negotiated);
656 #ifndef OPENSSL_NO_SRTP
657 if (s->srtp_profiles)
658 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
664 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
667 * If the output buffering BIO is still in place, remove it
669 if (s->bbio != NULL) {
670 if (s->wbio == s->bbio) {
671 s->wbio = s->wbio->next_bio;
672 s->bbio->next_bio = NULL;
675 if ((s->rbio != NULL) && (s->rbio != rbio))
676 BIO_free_all(s->rbio);
677 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
678 BIO_free_all(s->wbio);
683 BIO *SSL_get_rbio(const SSL *s)
688 BIO *SSL_get_wbio(const SSL *s)
693 int SSL_get_fd(const SSL *s)
695 return (SSL_get_rfd(s));
698 int SSL_get_rfd(const SSL *s)
704 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
710 int SSL_get_wfd(const SSL *s)
716 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
722 #ifndef OPENSSL_NO_SOCK
723 int SSL_set_fd(SSL *s, int fd)
728 bio = BIO_new(BIO_s_socket());
731 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
734 BIO_set_fd(bio, fd, BIO_NOCLOSE);
735 SSL_set_bio(s, bio, bio);
741 int SSL_set_wfd(SSL *s, int fd)
746 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
747 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
748 bio = BIO_new(BIO_s_socket());
751 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
754 BIO_set_fd(bio, fd, BIO_NOCLOSE);
755 SSL_set_bio(s, SSL_get_rbio(s), bio);
757 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
763 int SSL_set_rfd(SSL *s, int fd)
768 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
769 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
770 bio = BIO_new(BIO_s_socket());
773 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
776 BIO_set_fd(bio, fd, BIO_NOCLOSE);
777 SSL_set_bio(s, bio, SSL_get_wbio(s));
779 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
786 /* return length of latest Finished message we sent, copy to 'buf' */
787 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
792 ret = s->s3->tmp.finish_md_len;
795 memcpy(buf, s->s3->tmp.finish_md, count);
800 /* return length of latest Finished message we expected, copy to 'buf' */
801 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
806 ret = s->s3->tmp.peer_finish_md_len;
809 memcpy(buf, s->s3->tmp.peer_finish_md, count);
814 int SSL_get_verify_mode(const SSL *s)
816 return (s->verify_mode);
819 int SSL_get_verify_depth(const SSL *s)
821 return X509_VERIFY_PARAM_get_depth(s->param);
824 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
825 return (s->verify_callback);
828 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
830 return (ctx->verify_mode);
833 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
835 return X509_VERIFY_PARAM_get_depth(ctx->param);
838 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
839 return (ctx->default_verify_callback);
842 void SSL_set_verify(SSL *s, int mode,
843 int (*callback) (int ok, X509_STORE_CTX *ctx))
845 s->verify_mode = mode;
846 if (callback != NULL)
847 s->verify_callback = callback;
850 void SSL_set_verify_depth(SSL *s, int depth)
852 X509_VERIFY_PARAM_set_depth(s->param, depth);
855 void SSL_set_read_ahead(SSL *s, int yes)
860 int SSL_get_read_ahead(const SSL *s)
862 return (s->read_ahead);
865 int SSL_pending(const SSL *s)
868 * SSL_pending cannot work properly if read-ahead is enabled
869 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
870 * impossible to fix since SSL_pending cannot report errors that may be
871 * observed while scanning the new data. (Note that SSL_pending() is
872 * often used as a boolean value, so we'd better not return -1.)
874 return (s->method->ssl_pending(s));
877 X509 *SSL_get_peer_certificate(const SSL *s)
881 if ((s == NULL) || (s->session == NULL))
884 r = s->session->peer;
889 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
894 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
898 if ((s == NULL) || (s->session == NULL)
899 || (s->session->sess_cert == NULL))
902 r = s->session->sess_cert->cert_chain;
905 * If we are a client, cert_chain includes the peer's own certificate; if
906 * we are a server, it does not.
913 * Now in theory, since the calling process own 't' it should be safe to
914 * modify. We need to be able to read f without being hassled
916 void SSL_copy_session_id(SSL *t, const SSL *f)
920 /* Do we need to to SSL locking? */
921 SSL_set_session(t, SSL_get_session(f));
924 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
926 if (t->method != f->method) {
927 t->method->ssl_free(t); /* cleanup current */
928 t->method = f->method; /* change method */
929 t->method->ssl_new(t); /* setup new */
933 if (f->cert != NULL) {
934 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
940 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length);
943 /* Fix this so it checks all the valid key/cert options */
944 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
947 (ctx->cert == NULL) || (ctx->cert->key->x509 == NULL)) {
948 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
949 SSL_R_NO_CERTIFICATE_ASSIGNED);
952 if (ctx->cert->key->privatekey == NULL) {
953 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
954 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
957 return (X509_check_private_key
958 (ctx->cert->key->x509, ctx->cert->key->privatekey));
961 /* Fix this function so that it takes an optional type parameter */
962 int SSL_check_private_key(const SSL *ssl)
965 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
968 if (ssl->cert == NULL) {
969 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
972 if (ssl->cert->key->x509 == NULL) {
973 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
976 if (ssl->cert->key->privatekey == NULL) {
977 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
980 return (X509_check_private_key(ssl->cert->key->x509,
981 ssl->cert->key->privatekey));
984 int SSL_accept(SSL *s)
986 if (s->handshake_func == 0)
987 /* Not properly initialized yet */
988 SSL_set_accept_state(s);
990 return (s->method->ssl_accept(s));
993 int SSL_connect(SSL *s)
995 if (s->handshake_func == 0)
996 /* Not properly initialized yet */
997 SSL_set_connect_state(s);
999 return (s->method->ssl_connect(s));
1002 long SSL_get_default_timeout(const SSL *s)
1004 return (s->method->get_timeout());
1007 int SSL_read(SSL *s, void *buf, int num)
1009 if (s->handshake_func == 0) {
1010 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1014 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1015 s->rwstate = SSL_NOTHING;
1018 return (s->method->ssl_read(s, buf, num));
1021 int SSL_peek(SSL *s, void *buf, int num)
1023 if (s->handshake_func == 0) {
1024 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1028 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1031 return (s->method->ssl_peek(s, buf, num));
1034 int SSL_write(SSL *s, const void *buf, int num)
1036 if (s->handshake_func == 0) {
1037 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1041 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1042 s->rwstate = SSL_NOTHING;
1043 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1046 return (s->method->ssl_write(s, buf, num));
1049 int SSL_shutdown(SSL *s)
1052 * Note that this function behaves differently from what one might
1053 * expect. Return values are 0 for no success (yet), 1 for success; but
1054 * calling it once is usually not enough, even if blocking I/O is used
1055 * (see ssl3_shutdown).
1058 if (s->handshake_func == 0) {
1059 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1063 return s->method->ssl_shutdown(s);
1066 int SSL_renegotiate(SSL *s)
1068 if (s->renegotiate == 0)
1073 return (s->method->ssl_renegotiate(s));
1076 int SSL_renegotiate_abbreviated(SSL *s)
1078 if (s->renegotiate == 0)
1083 return (s->method->ssl_renegotiate(s));
1086 int SSL_renegotiate_pending(SSL *s)
1089 * becomes true when negotiation is requested; false again once a
1090 * handshake has finished
1092 return (s->renegotiate != 0);
1095 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1100 case SSL_CTRL_GET_READ_AHEAD:
1101 return (s->read_ahead);
1102 case SSL_CTRL_SET_READ_AHEAD:
1104 s->read_ahead = larg;
1107 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1108 s->msg_callback_arg = parg;
1111 case SSL_CTRL_OPTIONS:
1112 return (s->options |= larg);
1113 case SSL_CTRL_CLEAR_OPTIONS:
1114 return (s->options &= ~larg);
1116 return (s->mode |= larg);
1117 case SSL_CTRL_CLEAR_MODE:
1118 return (s->mode &= ~larg);
1119 case SSL_CTRL_GET_MAX_CERT_LIST:
1120 return (s->max_cert_list);
1121 case SSL_CTRL_SET_MAX_CERT_LIST:
1122 l = s->max_cert_list;
1123 s->max_cert_list = larg;
1125 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1126 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1128 s->max_send_fragment = larg;
1130 case SSL_CTRL_GET_RI_SUPPORT:
1132 return s->s3->send_connection_binding;
1135 case SSL_CTRL_CERT_FLAGS:
1136 return (s->cert->cert_flags |= larg);
1137 case SSL_CTRL_CLEAR_CERT_FLAGS:
1138 return (s->cert->cert_flags &= ~larg);
1140 case SSL_CTRL_GET_RAW_CIPHERLIST:
1142 if (s->cert->ciphers_raw == NULL)
1144 *(unsigned char **)parg = s->cert->ciphers_raw;
1145 return (int)s->cert->ciphers_rawlen;
1147 return ssl_put_cipher_by_char(s, NULL, NULL);
1149 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1153 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1156 case SSL_CTRL_SET_MSG_CALLBACK:
1157 s->msg_callback = (void (*)
1158 (int write_p, int version, int content_type,
1159 const void *buf, size_t len, SSL *ssl,
1164 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1168 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1170 return ctx->sessions;
1173 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1176 /* For some cases with ctx == NULL perform syntax checks */
1179 #ifndef OPENSSL_NO_EC
1180 case SSL_CTRL_SET_CURVES_LIST:
1181 return tls1_set_curves_list(NULL, NULL, parg);
1183 case SSL_CTRL_SET_SIGALGS_LIST:
1184 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1185 return tls1_set_sigalgs_list(NULL, parg, 0);
1192 case SSL_CTRL_GET_READ_AHEAD:
1193 return (ctx->read_ahead);
1194 case SSL_CTRL_SET_READ_AHEAD:
1195 l = ctx->read_ahead;
1196 ctx->read_ahead = larg;
1199 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1200 ctx->msg_callback_arg = parg;
1203 case SSL_CTRL_GET_MAX_CERT_LIST:
1204 return (ctx->max_cert_list);
1205 case SSL_CTRL_SET_MAX_CERT_LIST:
1206 l = ctx->max_cert_list;
1207 ctx->max_cert_list = larg;
1210 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1211 l = ctx->session_cache_size;
1212 ctx->session_cache_size = larg;
1214 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1215 return (ctx->session_cache_size);
1216 case SSL_CTRL_SET_SESS_CACHE_MODE:
1217 l = ctx->session_cache_mode;
1218 ctx->session_cache_mode = larg;
1220 case SSL_CTRL_GET_SESS_CACHE_MODE:
1221 return (ctx->session_cache_mode);
1223 case SSL_CTRL_SESS_NUMBER:
1224 return (lh_SSL_SESSION_num_items(ctx->sessions));
1225 case SSL_CTRL_SESS_CONNECT:
1226 return (ctx->stats.sess_connect);
1227 case SSL_CTRL_SESS_CONNECT_GOOD:
1228 return (ctx->stats.sess_connect_good);
1229 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1230 return (ctx->stats.sess_connect_renegotiate);
1231 case SSL_CTRL_SESS_ACCEPT:
1232 return (ctx->stats.sess_accept);
1233 case SSL_CTRL_SESS_ACCEPT_GOOD:
1234 return (ctx->stats.sess_accept_good);
1235 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1236 return (ctx->stats.sess_accept_renegotiate);
1237 case SSL_CTRL_SESS_HIT:
1238 return (ctx->stats.sess_hit);
1239 case SSL_CTRL_SESS_CB_HIT:
1240 return (ctx->stats.sess_cb_hit);
1241 case SSL_CTRL_SESS_MISSES:
1242 return (ctx->stats.sess_miss);
1243 case SSL_CTRL_SESS_TIMEOUTS:
1244 return (ctx->stats.sess_timeout);
1245 case SSL_CTRL_SESS_CACHE_FULL:
1246 return (ctx->stats.sess_cache_full);
1247 case SSL_CTRL_OPTIONS:
1248 return (ctx->options |= larg);
1249 case SSL_CTRL_CLEAR_OPTIONS:
1250 return (ctx->options &= ~larg);
1252 return (ctx->mode |= larg);
1253 case SSL_CTRL_CLEAR_MODE:
1254 return (ctx->mode &= ~larg);
1255 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1256 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1258 ctx->max_send_fragment = larg;
1260 case SSL_CTRL_CERT_FLAGS:
1261 return (ctx->cert->cert_flags |= larg);
1262 case SSL_CTRL_CLEAR_CERT_FLAGS:
1263 return (ctx->cert->cert_flags &= ~larg);
1265 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1269 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1272 case SSL_CTRL_SET_MSG_CALLBACK:
1273 ctx->msg_callback = (void (*)
1274 (int write_p, int version, int content_type,
1275 const void *buf, size_t len, SSL *ssl,
1280 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1284 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1292 return ((l > 0) ? 1 : -1);
1295 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1296 const SSL_CIPHER *const *bp)
1300 l = (*ap)->id - (*bp)->id;
1304 return ((l > 0) ? 1 : -1);
1307 /** return a STACK of the ciphers available for the SSL and in order of
1309 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1312 if (s->cipher_list != NULL) {
1313 return (s->cipher_list);
1314 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1315 return (s->ctx->cipher_list);
1321 /** return a STACK of the ciphers available for the SSL and in order of
1323 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1326 if (s->cipher_list_by_id != NULL) {
1327 return (s->cipher_list_by_id);
1328 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1329 return (s->ctx->cipher_list_by_id);
1335 /** The old interface to get the same thing as SSL_get_ciphers() */
1336 const char *SSL_get_cipher_list(const SSL *s, int n)
1339 STACK_OF(SSL_CIPHER) *sk;
1343 sk = SSL_get_ciphers(s);
1344 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1346 c = sk_SSL_CIPHER_value(sk, n);
1352 /** specify the ciphers to be used by default by the SSL_CTX */
1353 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1355 STACK_OF(SSL_CIPHER) *sk;
1357 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1358 &ctx->cipher_list_by_id, str, ctx->cert);
1360 * ssl_create_cipher_list may return an empty stack if it was unable to
1361 * find a cipher matching the given rule string (for example if the rule
1362 * string specifies a cipher which has been disabled). This is not an
1363 * error as far as ssl_create_cipher_list is concerned, and hence
1364 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1368 else if (sk_SSL_CIPHER_num(sk) == 0) {
1369 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1375 /** specify the ciphers to be used by the SSL */
1376 int SSL_set_cipher_list(SSL *s, const char *str)
1378 STACK_OF(SSL_CIPHER) *sk;
1380 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1381 &s->cipher_list_by_id, str, s->cert);
1382 /* see comment in SSL_CTX_set_cipher_list */
1385 else if (sk_SSL_CIPHER_num(sk) == 0) {
1386 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1392 /* works well for SSLv2, not so good for SSLv3 */
1393 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1396 STACK_OF(SSL_CIPHER) *sk;
1400 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1404 sk = s->session->ciphers;
1406 if (sk_SSL_CIPHER_num(sk) == 0)
1409 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1412 c = sk_SSL_CIPHER_value(sk, i);
1413 n = strlen(c->name);
1429 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1431 int (*put_cb) (const SSL_CIPHER *,
1438 int empty_reneg_info_scsv = !s->renegotiate;
1439 /* Set disabled masks for this session */
1440 ssl_set_client_disabled(s);
1446 put_cb = s->method->put_cipher_by_char;
1448 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1449 c = sk_SSL_CIPHER_value(sk, i);
1450 /* Skip disabled ciphers */
1451 if (c->algorithm_ssl & ct->mask_ssl ||
1452 c->algorithm_mkey & ct->mask_k || c->algorithm_auth & ct->mask_a)
1454 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1455 if (c->id == SSL3_CK_SCSV) {
1456 if (!empty_reneg_info_scsv)
1459 empty_reneg_info_scsv = 0;
1466 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1470 if (empty_reneg_info_scsv) {
1471 static SSL_CIPHER scsv = {
1472 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1474 j = put_cb(&scsv, p);
1476 #ifdef OPENSSL_RI_DEBUG
1478 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1481 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1482 static SSL_CIPHER scsv = {
1483 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1485 j = put_cb(&scsv, p);
1493 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1495 STACK_OF(SSL_CIPHER) **skp)
1497 const SSL_CIPHER *c;
1498 STACK_OF(SSL_CIPHER) *sk;
1502 s->s3->send_connection_binding = 0;
1504 n = ssl_put_cipher_by_char(s, NULL, NULL);
1505 if (n == 0 || (num % n) != 0) {
1506 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1507 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1510 if ((skp == NULL) || (*skp == NULL)) {
1511 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1513 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1518 sk_SSL_CIPHER_zero(sk);
1521 if (s->cert->ciphers_raw)
1522 OPENSSL_free(s->cert->ciphers_raw);
1523 s->cert->ciphers_raw = BUF_memdup(p, num);
1524 if (s->cert->ciphers_raw == NULL) {
1525 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1528 s->cert->ciphers_rawlen = (size_t)num;
1530 for (i = 0; i < num; i += n) {
1531 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1532 if (s->s3 && (n != 3 || !p[0]) &&
1533 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1534 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1535 /* SCSV fatal if renegotiating */
1536 if (s->renegotiate) {
1537 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1538 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1539 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1542 s->s3->send_connection_binding = 1;
1544 #ifdef OPENSSL_RI_DEBUG
1545 fprintf(stderr, "SCSV received by server\n");
1550 /* Check for TLS_FALLBACK_SCSV */
1551 if ((n != 3 || !p[0]) &&
1552 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1553 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1555 * The SCSV indicates that the client previously tried a higher
1556 * version. Fail if the current version is an unexpected
1559 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1560 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1561 SSL_R_INAPPROPRIATE_FALLBACK);
1563 ssl3_send_alert(s, SSL3_AL_FATAL,
1564 SSL_AD_INAPPROPRIATE_FALLBACK);
1571 c = ssl_get_cipher_by_char(s, p);
1574 if (!sk_SSL_CIPHER_push(sk, c)) {
1575 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1585 if ((skp == NULL) || (*skp == NULL))
1586 sk_SSL_CIPHER_free(sk);
1590 #ifndef OPENSSL_NO_TLSEXT
1591 /** return a servername extension value if provided in Client Hello, or NULL.
1592 * So far, only host_name types are defined (RFC 3546).
1595 const char *SSL_get_servername(const SSL *s, const int type)
1597 if (type != TLSEXT_NAMETYPE_host_name)
1600 return s->session && !s->tlsext_hostname ?
1601 s->session->tlsext_hostname : s->tlsext_hostname;
1604 int SSL_get_servername_type(const SSL *s)
1607 && (!s->tlsext_hostname ? s->session->
1608 tlsext_hostname : s->tlsext_hostname))
1609 return TLSEXT_NAMETYPE_host_name;
1614 * SSL_select_next_proto implements the standard protocol selection. It is
1615 * expected that this function is called from the callback set by
1616 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1617 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1618 * not included in the length. A byte string of length 0 is invalid. No byte
1619 * string may be truncated. The current, but experimental algorithm for
1620 * selecting the protocol is: 1) If the server doesn't support NPN then this
1621 * is indicated to the callback. In this case, the client application has to
1622 * abort the connection or have a default application level protocol. 2) If
1623 * the server supports NPN, but advertises an empty list then the client
1624 * selects the first protcol in its list, but indicates via the API that this
1625 * fallback case was enacted. 3) Otherwise, the client finds the first
1626 * protocol in the server's list that it supports and selects this protocol.
1627 * This is because it's assumed that the server has better information about
1628 * which protocol a client should use. 4) If the client doesn't support any
1629 * of the server's advertised protocols, then this is treated the same as
1630 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1631 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1633 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1634 const unsigned char *server,
1635 unsigned int server_len,
1636 const unsigned char *client,
1637 unsigned int client_len)
1640 const unsigned char *result;
1641 int status = OPENSSL_NPN_UNSUPPORTED;
1644 * For each protocol in server preference order, see if we support it.
1646 for (i = 0; i < server_len;) {
1647 for (j = 0; j < client_len;) {
1648 if (server[i] == client[j] &&
1649 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1650 /* We found a match */
1651 result = &server[i];
1652 status = OPENSSL_NPN_NEGOTIATED;
1662 /* There's no overlap between our protocols and the server's list. */
1664 status = OPENSSL_NPN_NO_OVERLAP;
1667 *out = (unsigned char *)result + 1;
1668 *outlen = result[0];
1672 # ifndef OPENSSL_NO_NEXTPROTONEG
1674 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1675 * client's requested protocol for this connection and returns 0. If the
1676 * client didn't request any protocol, then *data is set to NULL. Note that
1677 * the client can request any protocol it chooses. The value returned from
1678 * this function need not be a member of the list of supported protocols
1679 * provided by the callback.
1681 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1684 *data = s->next_proto_negotiated;
1688 *len = s->next_proto_negotiated_len;
1693 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1694 * a TLS server needs a list of supported protocols for Next Protocol
1695 * Negotiation. The returned list must be in wire format. The list is
1696 * returned by setting |out| to point to it and |outlen| to its length. This
1697 * memory will not be modified, but one should assume that the SSL* keeps a
1698 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1699 * wishes to advertise. Otherwise, no such extension will be included in the
1702 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1703 int (*cb) (SSL *ssl,
1706 unsigned int *outlen,
1707 void *arg), void *arg)
1709 ctx->next_protos_advertised_cb = cb;
1710 ctx->next_protos_advertised_cb_arg = arg;
1714 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1715 * client needs to select a protocol from the server's provided list. |out|
1716 * must be set to point to the selected protocol (which may be within |in|).
1717 * The length of the protocol name must be written into |outlen|. The
1718 * server's advertised protocols are provided in |in| and |inlen|. The
1719 * callback can assume that |in| is syntactically valid. The client must
1720 * select a protocol. It is fatal to the connection if this callback returns
1721 * a value other than SSL_TLSEXT_ERR_OK.
1723 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1724 int (*cb) (SSL *s, unsigned char **out,
1725 unsigned char *outlen,
1726 const unsigned char *in,
1728 void *arg), void *arg)
1730 ctx->next_proto_select_cb = cb;
1731 ctx->next_proto_select_cb_arg = arg;
1736 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1737 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1738 * length-prefixed strings). Returns 0 on success.
1740 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1741 unsigned protos_len)
1743 if (ctx->alpn_client_proto_list)
1744 OPENSSL_free(ctx->alpn_client_proto_list);
1746 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1747 if (!ctx->alpn_client_proto_list)
1749 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1750 ctx->alpn_client_proto_list_len = protos_len;
1756 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1757 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1758 * length-prefixed strings). Returns 0 on success.
1760 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1761 unsigned protos_len)
1763 if (ssl->alpn_client_proto_list)
1764 OPENSSL_free(ssl->alpn_client_proto_list);
1766 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1767 if (!ssl->alpn_client_proto_list)
1769 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1770 ssl->alpn_client_proto_list_len = protos_len;
1776 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1777 * called during ClientHello processing in order to select an ALPN protocol
1778 * from the client's list of offered protocols.
1780 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1781 int (*cb) (SSL *ssl,
1782 const unsigned char **out,
1783 unsigned char *outlen,
1784 const unsigned char *in,
1786 void *arg), void *arg)
1788 ctx->alpn_select_cb = cb;
1789 ctx->alpn_select_cb_arg = arg;
1793 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1794 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1795 * (not including the leading length-prefix byte). If the server didn't
1796 * respond with a negotiated protocol then |*len| will be zero.
1798 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1803 *data = ssl->s3->alpn_selected;
1807 *len = ssl->s3->alpn_selected_len;
1810 #endif /* !OPENSSL_NO_TLSEXT */
1812 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1813 const char *label, size_t llen,
1814 const unsigned char *p, size_t plen,
1817 if (s->version < TLS1_VERSION)
1820 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1825 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1830 ((unsigned int)a->session_id[0]) |
1831 ((unsigned int)a->session_id[1] << 8L) |
1832 ((unsigned long)a->session_id[2] << 16L) |
1833 ((unsigned long)a->session_id[3] << 24L);
1838 * NB: If this function (or indeed the hash function which uses a sort of
1839 * coarser function than this one) is changed, ensure
1840 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1841 * being able to construct an SSL_SESSION that will collide with any existing
1842 * session with a matching session ID.
1844 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1846 if (a->ssl_version != b->ssl_version)
1848 if (a->session_id_length != b->session_id_length)
1850 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1854 * These wrapper functions should remain rather than redeclaring
1855 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1856 * variable. The reason is that the functions aren't static, they're exposed
1859 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1860 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1862 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1864 SSL_CTX *ret = NULL;
1867 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1871 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1872 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1877 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1878 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1881 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1885 memset(ret, 0, sizeof(SSL_CTX));
1889 ret->cert_store = NULL;
1890 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1891 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1892 ret->session_cache_head = NULL;
1893 ret->session_cache_tail = NULL;
1895 /* We take the system default */
1896 ret->session_timeout = meth->get_timeout();
1898 ret->new_session_cb = 0;
1899 ret->remove_session_cb = 0;
1900 ret->get_session_cb = 0;
1901 ret->generate_session_id = 0;
1903 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1905 ret->references = 1;
1906 ret->quiet_shutdown = 0;
1908 /* ret->cipher=NULL;*/
1910 ret->s2->challenge=NULL;
1911 ret->master_key=NULL;
1913 ret->s2->conn_id=NULL; */
1915 ret->info_callback = NULL;
1917 ret->app_verify_callback = 0;
1918 ret->app_verify_arg = NULL;
1920 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1921 ret->read_ahead = 0;
1922 ret->msg_callback = 0;
1923 ret->msg_callback_arg = NULL;
1924 ret->verify_mode = SSL_VERIFY_NONE;
1926 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */
1928 ret->sid_ctx_length = 0;
1929 ret->default_verify_callback = NULL;
1930 if ((ret->cert = ssl_cert_new()) == NULL)
1933 ret->default_passwd_callback = 0;
1934 ret->default_passwd_callback_userdata = NULL;
1935 ret->client_cert_cb = 0;
1936 ret->app_gen_cookie_cb = 0;
1937 ret->app_verify_cookie_cb = 0;
1939 ret->sessions = lh_SSL_SESSION_new();
1940 if (ret->sessions == NULL)
1942 ret->cert_store = X509_STORE_new();
1943 if (ret->cert_store == NULL)
1946 ssl_create_cipher_list(ret->method,
1947 &ret->cipher_list, &ret->cipher_list_by_id,
1949 SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST,
1951 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1952 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1956 ret->param = X509_VERIFY_PARAM_new();
1960 if ((ret->rsa_md5 = EVP_get_digestbyname("ssl2-md5")) == NULL) {
1961 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1964 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1965 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1968 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1969 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1973 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1976 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1978 ret->extra_certs = NULL;
1979 /* No compression for DTLS */
1980 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1981 ret->comp_methods = SSL_COMP_get_compression_methods();
1983 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1985 #ifndef OPENSSL_NO_TLSEXT
1986 ret->tlsext_servername_callback = 0;
1987 ret->tlsext_servername_arg = NULL;
1988 /* Setup RFC4507 ticket keys */
1989 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1990 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1991 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1992 ret->options |= SSL_OP_NO_TICKET;
1994 ret->tlsext_status_cb = 0;
1995 ret->tlsext_status_arg = NULL;
1997 # ifndef OPENSSL_NO_NEXTPROTONEG
1998 ret->next_protos_advertised_cb = 0;
1999 ret->next_proto_select_cb = 0;
2002 #ifndef OPENSSL_NO_PSK
2003 ret->psk_identity_hint = NULL;
2004 ret->psk_client_callback = NULL;
2005 ret->psk_server_callback = NULL;
2007 #ifndef OPENSSL_NO_SRP
2008 SSL_CTX_SRP_CTX_init(ret);
2010 #ifndef OPENSSL_NO_BUF_FREELISTS
2011 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
2012 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
2013 if (!ret->rbuf_freelist)
2015 ret->rbuf_freelist->chunklen = 0;
2016 ret->rbuf_freelist->len = 0;
2017 ret->rbuf_freelist->head = NULL;
2018 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
2019 if (!ret->wbuf_freelist) {
2020 OPENSSL_free(ret->rbuf_freelist);
2023 ret->wbuf_freelist->chunklen = 0;
2024 ret->wbuf_freelist->len = 0;
2025 ret->wbuf_freelist->head = NULL;
2027 #ifndef OPENSSL_NO_ENGINE
2028 ret->client_cert_engine = NULL;
2029 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2030 # define eng_strx(x) #x
2031 # define eng_str(x) eng_strx(x)
2032 /* Use specific client engine automatically... ignore errors */
2035 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2038 ENGINE_load_builtin_engines();
2039 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2041 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2047 * Default is to connect to non-RI servers. When RI is more widely
2048 * deployed might change this.
2050 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2054 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2062 static void SSL_COMP_free(SSL_COMP *comp)
2068 #ifndef OPENSSL_NO_BUF_FREELISTS
2069 static void ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
2071 SSL3_BUF_FREELIST_ENTRY *ent, *next;
2072 for (ent = list->head; ent; ent = next) {
2080 void SSL_CTX_free(SSL_CTX *a)
2087 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2089 REF_PRINT("SSL_CTX", a);
2095 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
2101 X509_VERIFY_PARAM_free(a->param);
2104 * Free internal session cache. However: the remove_cb() may reference
2105 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2106 * after the sessions were flushed.
2107 * As the ex_data handling routines might also touch the session cache,
2108 * the most secure solution seems to be: empty (flush) the cache, then
2109 * free ex_data, then finally free the cache.
2110 * (See ticket [openssl.org #212].)
2112 if (a->sessions != NULL)
2113 SSL_CTX_flush_sessions(a, 0);
2115 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2117 if (a->sessions != NULL)
2118 lh_SSL_SESSION_free(a->sessions);
2120 if (a->cert_store != NULL)
2121 X509_STORE_free(a->cert_store);
2122 if (a->cipher_list != NULL)
2123 sk_SSL_CIPHER_free(a->cipher_list);
2124 if (a->cipher_list_by_id != NULL)
2125 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2126 if (a->cert != NULL)
2127 ssl_cert_free(a->cert);
2128 if (a->client_CA != NULL)
2129 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2130 if (a->extra_certs != NULL)
2131 sk_X509_pop_free(a->extra_certs, X509_free);
2132 #if 0 /* This should never be done, since it
2133 * removes a global database */
2134 if (a->comp_methods != NULL)
2135 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free);
2137 a->comp_methods = NULL;
2140 #ifndef OPENSSL_NO_SRTP
2141 if (a->srtp_profiles)
2142 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2145 #ifndef OPENSSL_NO_PSK
2146 if (a->psk_identity_hint)
2147 OPENSSL_free(a->psk_identity_hint);
2149 #ifndef OPENSSL_NO_SRP
2150 SSL_CTX_SRP_CTX_free(a);
2152 #ifndef OPENSSL_NO_ENGINE
2153 if (a->client_cert_engine)
2154 ENGINE_finish(a->client_cert_engine);
2157 #ifndef OPENSSL_NO_BUF_FREELISTS
2158 if (a->wbuf_freelist)
2159 ssl_buf_freelist_free(a->wbuf_freelist);
2160 if (a->rbuf_freelist)
2161 ssl_buf_freelist_free(a->rbuf_freelist);
2163 #ifndef OPENSSL_NO_TLSEXT
2164 # ifndef OPENSSL_NO_EC
2165 if (a->tlsext_ecpointformatlist)
2166 OPENSSL_free(a->tlsext_ecpointformatlist);
2167 if (a->tlsext_ellipticcurvelist)
2168 OPENSSL_free(a->tlsext_ellipticcurvelist);
2169 # endif /* OPENSSL_NO_EC */
2170 if (a->alpn_client_proto_list != NULL)
2171 OPENSSL_free(a->alpn_client_proto_list);
2177 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2179 ctx->default_passwd_callback = cb;
2182 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2184 ctx->default_passwd_callback_userdata = u;
2187 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2188 int (*cb) (X509_STORE_CTX *, void *),
2191 ctx->app_verify_callback = cb;
2192 ctx->app_verify_arg = arg;
2195 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2196 int (*cb) (int, X509_STORE_CTX *))
2198 ctx->verify_mode = mode;
2199 ctx->default_verify_callback = cb;
2202 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2204 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2207 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2210 ssl_cert_set_cert_cb(c->cert, cb, arg);
2213 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2215 ssl_cert_set_cert_cb(s->cert, cb, arg);
2218 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2221 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2222 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2223 int rsa_tmp_export, dh_tmp_export, kl;
2224 unsigned long mask_k, mask_a, emask_k, emask_a;
2225 #ifndef OPENSSL_NO_ECDSA
2226 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2228 #ifndef OPENSSL_NO_ECDH
2229 int have_ecdh_tmp, ecdh_ok;
2231 #ifndef OPENSSL_NO_EC
2233 EVP_PKEY *ecc_pkey = NULL;
2234 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2239 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2241 #ifndef OPENSSL_NO_RSA
2242 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2243 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2244 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2246 rsa_tmp = rsa_tmp_export = 0;
2248 #ifndef OPENSSL_NO_DH
2249 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
2250 dh_tmp_export = (c->dh_tmp_cb != NULL ||
2251 (dh_tmp && DH_size(c->dh_tmp) * 8 <= kl));
2253 dh_tmp = dh_tmp_export = 0;
2256 #ifndef OPENSSL_NO_ECDH
2257 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2259 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2260 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID;
2261 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2262 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2263 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2264 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2265 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2266 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2267 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID;
2268 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2269 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2270 /* FIX THIS EAY EAY EAY */
2271 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID;
2272 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2273 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2274 #ifndef OPENSSL_NO_EC
2275 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID;
2284 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2285 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2286 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2289 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2290 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2291 mask_k |= SSL_kGOST;
2292 mask_a |= SSL_aGOST01;
2294 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2295 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2296 mask_k |= SSL_kGOST;
2297 mask_a |= SSL_aGOST94;
2300 if (rsa_enc || (rsa_tmp && rsa_sign))
2302 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2303 emask_k |= SSL_kRSA;
2306 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
2307 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign))
2309 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2310 (rsa_enc || rsa_sign || dsa_sign))
2311 emask_k |= SSL_kEDH;
2315 emask_k |= SSL_kEDH;
2323 emask_k |= SSL_kDHr;
2328 emask_k |= SSL_kDHd;
2330 if (mask_k & (SSL_kDHr | SSL_kDHd))
2333 if (rsa_enc || rsa_sign) {
2335 emask_a |= SSL_aRSA;
2340 emask_a |= SSL_aDSS;
2343 mask_a |= SSL_aNULL;
2344 emask_a |= SSL_aNULL;
2346 #ifndef OPENSSL_NO_KRB5
2347 mask_k |= SSL_kKRB5;
2348 mask_a |= SSL_aKRB5;
2349 emask_k |= SSL_kKRB5;
2350 emask_a |= SSL_aKRB5;
2354 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2355 * depending on the key usage extension.
2357 #ifndef OPENSSL_NO_EC
2358 if (have_ecc_cert) {
2359 cpk = &c->pkeys[SSL_PKEY_ECC];
2361 /* This call populates extension flags (ex_flags) */
2362 X509_check_purpose(x, -1, 0);
2363 # ifndef OPENSSL_NO_ECDH
2364 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2365 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2367 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2368 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2369 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2371 ecc_pkey = X509_get_pubkey(x);
2372 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2373 EVP_PKEY_free(ecc_pkey);
2374 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2375 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2376 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2378 # ifndef OPENSSL_NO_ECDH
2381 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2382 mask_k |= SSL_kECDHr;
2383 mask_a |= SSL_aECDH;
2384 if (ecc_pkey_size <= 163) {
2385 emask_k |= SSL_kECDHr;
2386 emask_a |= SSL_aECDH;
2390 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2391 mask_k |= SSL_kECDHe;
2392 mask_a |= SSL_aECDH;
2393 if (ecc_pkey_size <= 163) {
2394 emask_k |= SSL_kECDHe;
2395 emask_a |= SSL_aECDH;
2400 # ifndef OPENSSL_NO_ECDSA
2402 mask_a |= SSL_aECDSA;
2403 emask_a |= SSL_aECDSA;
2409 #ifndef OPENSSL_NO_ECDH
2410 if (have_ecdh_tmp) {
2411 mask_k |= SSL_kEECDH;
2412 emask_k |= SSL_kEECDH;
2416 #ifndef OPENSSL_NO_PSK
2419 emask_k |= SSL_kPSK;
2420 emask_a |= SSL_aPSK;
2425 c->export_mask_k = emask_k;
2426 c->export_mask_a = emask_a;
2430 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2431 #define ku_reject(x, usage) \
2432 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2434 #ifndef OPENSSL_NO_EC
2436 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2438 unsigned long alg_k, alg_a;
2439 EVP_PKEY *pkey = NULL;
2441 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2442 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2444 alg_k = cs->algorithm_mkey;
2445 alg_a = cs->algorithm_auth;
2447 if (SSL_C_IS_EXPORT(cs)) {
2448 /* ECDH key length in export ciphers must be <= 163 bits */
2449 pkey = X509_get_pubkey(x);
2452 keysize = EVP_PKEY_bits(pkey);
2453 EVP_PKEY_free(pkey);
2458 /* This call populates the ex_flags field correctly */
2459 X509_check_purpose(x, -1, 0);
2460 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2461 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2462 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2464 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2465 /* key usage, if present, must allow key agreement */
2466 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2467 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2468 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2471 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2472 /* signature alg must be ECDSA */
2473 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2474 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2475 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2479 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2480 /* signature alg must be RSA */
2482 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2483 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2484 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2489 if (alg_a & SSL_aECDSA) {
2490 /* key usage, if present, must allow signing */
2491 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2492 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2493 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2498 return 1; /* all checks are ok */
2503 static int ssl_get_server_cert_index(const SSL *s)
2506 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2507 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2508 idx = SSL_PKEY_RSA_SIGN;
2510 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2514 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2520 if (!s->s3 || !s->s3->tmp.new_cipher)
2522 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2524 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2526 * Broken protocol test: return last used certificate: which may mismatch
2529 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2533 i = ssl_get_server_cert_index(s);
2535 /* This may or may not be an error. */
2540 return &c->pkeys[i];
2543 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2546 unsigned long alg_a;
2550 alg_a = cipher->algorithm_auth;
2553 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2555 * Broken protocol test: use last key: which may mismatch the one
2558 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2559 idx = c->key - c->pkeys;
2563 if ((alg_a & SSL_aDSS) &&
2564 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2565 idx = SSL_PKEY_DSA_SIGN;
2566 else if (alg_a & SSL_aRSA) {
2567 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2568 idx = SSL_PKEY_RSA_SIGN;
2569 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2570 idx = SSL_PKEY_RSA_ENC;
2571 } else if ((alg_a & SSL_aECDSA) &&
2572 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2575 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2579 *pmd = c->pkeys[idx].digest;
2580 return c->pkeys[idx].privatekey;
2583 #ifndef OPENSSL_NO_TLSEXT
2584 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2585 size_t *serverinfo_length)
2589 *serverinfo_length = 0;
2592 i = ssl_get_server_cert_index(s);
2596 if (c->pkeys[i].serverinfo == NULL)
2599 *serverinfo = c->pkeys[i].serverinfo;
2600 *serverinfo_length = c->pkeys[i].serverinfo_length;
2605 void ssl_update_cache(SSL *s, int mode)
2610 * If the session_id_length is 0, we are not supposed to cache it, and it
2611 * would be rather hard to do anyway :-)
2613 if (s->session->session_id_length == 0)
2616 i = s->session_ctx->session_cache_mode;
2617 if ((i & mode) && (!s->hit)
2618 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2619 || SSL_CTX_add_session(s->session_ctx, s->session))
2620 && (s->session_ctx->new_session_cb != NULL)) {
2621 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2622 if (!s->session_ctx->new_session_cb(s, s->session))
2623 SSL_SESSION_free(s->session);
2626 /* auto flush every 255 connections */
2627 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2628 if ((((mode & SSL_SESS_CACHE_CLIENT)
2629 ? s->session_ctx->stats.sess_connect_good
2630 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2631 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2636 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2641 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2646 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2651 if (s->method != meth) {
2652 if (s->handshake_func != NULL)
2653 conn = (s->handshake_func == s->method->ssl_connect);
2655 if (s->method->version == meth->version)
2658 s->method->ssl_free(s);
2660 ret = s->method->ssl_new(s);
2664 s->handshake_func = meth->ssl_connect;
2666 s->handshake_func = meth->ssl_accept;
2671 int SSL_get_error(const SSL *s, int i)
2678 return (SSL_ERROR_NONE);
2681 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2682 * where we do encode the error
2684 if ((l = ERR_peek_error()) != 0) {
2685 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2686 return (SSL_ERROR_SYSCALL);
2688 return (SSL_ERROR_SSL);
2691 if ((i < 0) && SSL_want_read(s)) {
2692 bio = SSL_get_rbio(s);
2693 if (BIO_should_read(bio))
2694 return (SSL_ERROR_WANT_READ);
2695 else if (BIO_should_write(bio))
2697 * This one doesn't make too much sense ... We never try to write
2698 * to the rbio, and an application program where rbio and wbio
2699 * are separate couldn't even know what it should wait for.
2700 * However if we ever set s->rwstate incorrectly (so that we have
2701 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2702 * wbio *are* the same, this test works around that bug; so it
2703 * might be safer to keep it.
2705 return (SSL_ERROR_WANT_WRITE);
2706 else if (BIO_should_io_special(bio)) {
2707 reason = BIO_get_retry_reason(bio);
2708 if (reason == BIO_RR_CONNECT)
2709 return (SSL_ERROR_WANT_CONNECT);
2710 else if (reason == BIO_RR_ACCEPT)
2711 return (SSL_ERROR_WANT_ACCEPT);
2713 return (SSL_ERROR_SYSCALL); /* unknown */
2717 if ((i < 0) && SSL_want_write(s)) {
2718 bio = SSL_get_wbio(s);
2719 if (BIO_should_write(bio))
2720 return (SSL_ERROR_WANT_WRITE);
2721 else if (BIO_should_read(bio))
2723 * See above (SSL_want_read(s) with BIO_should_write(bio))
2725 return (SSL_ERROR_WANT_READ);
2726 else if (BIO_should_io_special(bio)) {
2727 reason = BIO_get_retry_reason(bio);
2728 if (reason == BIO_RR_CONNECT)
2729 return (SSL_ERROR_WANT_CONNECT);
2730 else if (reason == BIO_RR_ACCEPT)
2731 return (SSL_ERROR_WANT_ACCEPT);
2733 return (SSL_ERROR_SYSCALL);
2736 if ((i < 0) && SSL_want_x509_lookup(s)) {
2737 return (SSL_ERROR_WANT_X509_LOOKUP);
2741 if (s->version == SSL2_VERSION) {
2742 /* assume it is the socket being closed */
2743 return (SSL_ERROR_ZERO_RETURN);
2745 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2746 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2747 return (SSL_ERROR_ZERO_RETURN);
2750 return (SSL_ERROR_SYSCALL);
2753 int SSL_do_handshake(SSL *s)
2757 if (s->handshake_func == NULL) {
2758 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2762 s->method->ssl_renegotiate_check(s);
2764 if (SSL_in_init(s) || SSL_in_before(s)) {
2765 ret = s->handshake_func(s);
2771 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2772 * calls will reset it
2774 void SSL_set_accept_state(SSL *s)
2778 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2779 s->handshake_func = s->method->ssl_accept;
2780 /* clear the current cipher */
2781 ssl_clear_cipher_ctx(s);
2782 ssl_clear_hash_ctx(&s->read_hash);
2783 ssl_clear_hash_ctx(&s->write_hash);
2786 void SSL_set_connect_state(SSL *s)
2790 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2791 s->handshake_func = s->method->ssl_connect;
2792 /* clear the current cipher */
2793 ssl_clear_cipher_ctx(s);
2794 ssl_clear_hash_ctx(&s->read_hash);
2795 ssl_clear_hash_ctx(&s->write_hash);
2798 int ssl_undefined_function(SSL *s)
2800 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2804 int ssl_undefined_void_function(void)
2806 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2807 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2811 int ssl_undefined_const_function(const SSL *s)
2813 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2814 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2818 SSL_METHOD *ssl_bad_method(int ver)
2820 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2824 const char *SSL_get_version(const SSL *s)
2826 if (s->version == TLS1_2_VERSION)
2828 else if (s->version == TLS1_1_VERSION)
2830 else if (s->version == TLS1_VERSION)
2832 else if (s->version == SSL3_VERSION)
2834 else if (s->version == SSL2_VERSION)
2836 else if (s->version == DTLS1_BAD_VER)
2837 return ("DTLSv0.9");
2838 else if (s->version == DTLS1_VERSION)
2840 else if (s->version == DTLS1_2_VERSION)
2841 return ("DTLSv1.2");
2846 SSL *SSL_dup(SSL *s)
2848 STACK_OF(X509_NAME) *sk;
2853 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2856 ret->version = s->version;
2857 ret->type = s->type;
2858 ret->method = s->method;
2860 if (s->session != NULL) {
2861 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2862 SSL_copy_session_id(ret, s);
2865 * No session has been established yet, so we have to expect that
2866 * s->cert or ret->cert will be changed later -- they should not both
2867 * point to the same object, and thus we can't use
2868 * SSL_copy_session_id.
2871 ret->method->ssl_free(ret);
2872 ret->method = s->method;
2873 ret->method->ssl_new(ret);
2875 if (s->cert != NULL) {
2876 if (ret->cert != NULL) {
2877 ssl_cert_free(ret->cert);
2879 ret->cert = ssl_cert_dup(s->cert);
2880 if (ret->cert == NULL)
2884 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length);
2887 ret->options = s->options;
2888 ret->mode = s->mode;
2889 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2890 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2891 ret->msg_callback = s->msg_callback;
2892 ret->msg_callback_arg = s->msg_callback_arg;
2893 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2894 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2895 ret->generate_session_id = s->generate_session_id;
2897 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2899 ret->debug = s->debug;
2901 /* copy app data, a little dangerous perhaps */
2902 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2905 /* setup rbio, and wbio */
2906 if (s->rbio != NULL) {
2907 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2910 if (s->wbio != NULL) {
2911 if (s->wbio != s->rbio) {
2912 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2915 ret->wbio = ret->rbio;
2917 ret->rwstate = s->rwstate;
2918 ret->in_handshake = s->in_handshake;
2919 ret->handshake_func = s->handshake_func;
2920 ret->server = s->server;
2921 ret->renegotiate = s->renegotiate;
2922 ret->new_session = s->new_session;
2923 ret->quiet_shutdown = s->quiet_shutdown;
2924 ret->shutdown = s->shutdown;
2925 ret->state = s->state; /* SSL_dup does not really work at any state,
2927 ret->rstate = s->rstate;
2928 ret->init_num = 0; /* would have to copy ret->init_buf,
2929 * ret->init_msg, ret->init_num,
2933 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2935 /* dup the cipher_list and cipher_list_by_id stacks */
2936 if (s->cipher_list != NULL) {
2937 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2940 if (s->cipher_list_by_id != NULL)
2941 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2945 /* Dup the client_CA list */
2946 if (s->client_CA != NULL) {
2947 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2949 ret->client_CA = sk;
2950 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2951 xn = sk_X509_NAME_value(sk, i);
2952 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2968 void ssl_clear_cipher_ctx(SSL *s)
2970 if (s->enc_read_ctx != NULL) {
2971 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2972 OPENSSL_free(s->enc_read_ctx);
2973 s->enc_read_ctx = NULL;
2975 if (s->enc_write_ctx != NULL) {
2976 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2977 OPENSSL_free(s->enc_write_ctx);
2978 s->enc_write_ctx = NULL;
2980 #ifndef OPENSSL_NO_COMP
2981 if (s->expand != NULL) {
2982 COMP_CTX_free(s->expand);
2985 if (s->compress != NULL) {
2986 COMP_CTX_free(s->compress);
2992 X509 *SSL_get_certificate(const SSL *s)
2994 if (s->cert != NULL)
2995 return (s->cert->key->x509);
3000 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3002 if (s->cert != NULL)
3003 return (s->cert->key->privatekey);
3008 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3010 if (ctx->cert != NULL)
3011 return ctx->cert->key->x509;
3016 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3018 if (ctx->cert != NULL)
3019 return ctx->cert->key->privatekey;
3024 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3026 if ((s->session != NULL) && (s->session->cipher != NULL))
3027 return (s->session->cipher);
3031 #ifdef OPENSSL_NO_COMP
3032 const void *SSL_get_current_compression(SSL *s)
3037 const void *SSL_get_current_expansion(SSL *s)
3043 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3045 if (s->compress != NULL)
3046 return (s->compress->meth);
3050 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3052 if (s->expand != NULL)
3053 return (s->expand->meth);
3058 int ssl_init_wbio_buffer(SSL *s, int push)
3062 if (s->bbio == NULL) {
3063 bbio = BIO_new(BIO_f_buffer());
3069 if (s->bbio == s->wbio)
3070 s->wbio = BIO_pop(s->wbio);
3072 (void)BIO_reset(bbio);
3073 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3074 if (!BIO_set_read_buffer_size(bbio, 1)) {
3075 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3079 if (s->wbio != bbio)
3080 s->wbio = BIO_push(bbio, s->wbio);
3082 if (s->wbio == bbio)
3083 s->wbio = BIO_pop(bbio);
3088 void ssl_free_wbio_buffer(SSL *s)
3090 if (s->bbio == NULL)
3093 if (s->bbio == s->wbio) {
3094 /* remove buffering */
3095 s->wbio = BIO_pop(s->wbio);
3096 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
3097 * adding one more preprocessor symbol */
3098 assert(s->wbio != NULL);
3105 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3107 ctx->quiet_shutdown = mode;
3110 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3112 return (ctx->quiet_shutdown);
3115 void SSL_set_quiet_shutdown(SSL *s, int mode)
3117 s->quiet_shutdown = mode;
3120 int SSL_get_quiet_shutdown(const SSL *s)
3122 return (s->quiet_shutdown);
3125 void SSL_set_shutdown(SSL *s, int mode)
3130 int SSL_get_shutdown(const SSL *s)
3132 return (s->shutdown);
3135 int SSL_version(const SSL *s)
3137 return (s->version);
3140 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3145 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3147 CERT *ocert = ssl->cert;
3148 if (ssl->ctx == ctx)
3150 #ifndef OPENSSL_NO_TLSEXT
3152 ctx = ssl->initial_ctx;
3154 ssl->cert = ssl_cert_dup(ctx->cert);
3156 /* Preserve any already negotiated parameters */
3158 ssl->cert->peer_sigalgs = ocert->peer_sigalgs;
3159 ssl->cert->peer_sigalgslen = ocert->peer_sigalgslen;
3160 ocert->peer_sigalgs = NULL;
3161 ssl->cert->ciphers_raw = ocert->ciphers_raw;
3162 ssl->cert->ciphers_rawlen = ocert->ciphers_rawlen;
3163 ocert->ciphers_raw = NULL;
3165 ssl_cert_free(ocert);
3169 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3170 * so setter APIs must prevent invalid lengths from entering the system.
3172 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3175 * If the session ID context matches that of the parent SSL_CTX,
3176 * inherit it from the new SSL_CTX as well. If however the context does
3177 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3178 * leave it unchanged.
3180 if ((ssl->ctx != NULL) &&
3181 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3182 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3183 ssl->sid_ctx_length = ctx->sid_ctx_length;
3184 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3187 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3188 if (ssl->ctx != NULL)
3189 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3195 #ifndef OPENSSL_NO_STDIO
3196 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3198 return (X509_STORE_set_default_paths(ctx->cert_store));
3201 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3204 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3208 void SSL_set_info_callback(SSL *ssl,
3209 void (*cb) (const SSL *ssl, int type, int val))
3211 ssl->info_callback = cb;
3215 * One compiler (Diab DCC) doesn't like argument names in returned function
3218 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3221 return ssl->info_callback;
3224 int SSL_state(const SSL *ssl)
3226 return (ssl->state);
3229 void SSL_set_state(SSL *ssl, int state)
3234 void SSL_set_verify_result(SSL *ssl, long arg)
3236 ssl->verify_result = arg;
3239 long SSL_get_verify_result(const SSL *ssl)
3241 return (ssl->verify_result);
3244 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3245 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3247 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3248 new_func, dup_func, free_func);
3251 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3253 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3256 void *SSL_get_ex_data(const SSL *s, int idx)
3258 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3261 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3262 CRYPTO_EX_dup *dup_func,
3263 CRYPTO_EX_free *free_func)
3265 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3266 new_func, dup_func, free_func);
3269 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3271 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3274 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3276 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3284 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3286 return (ctx->cert_store);
3289 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3291 if (ctx->cert_store != NULL)
3292 X509_STORE_free(ctx->cert_store);
3293 ctx->cert_store = store;
3296 int SSL_want(const SSL *s)
3298 return (s->rwstate);
3302 * \brief Set the callback for generating temporary RSA keys.
3303 * \param ctx the SSL context.
3304 * \param cb the callback
3307 #ifndef OPENSSL_NO_RSA
3308 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3312 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3315 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3319 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3325 * \brief The RSA temporary key callback function.
3326 * \param ssl the SSL session.
3327 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3328 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3329 * of the required key in bits.
3330 * \return the temporary RSA key.
3331 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3334 RSA *cb(SSL *ssl, int is_export, int keylength)
3340 * \brief Set the callback for generating temporary DH keys.
3341 * \param ctx the SSL context.
3342 * \param dh the callback
3345 #ifndef OPENSSL_NO_DH
3346 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3347 DH *(*dh) (SSL *ssl, int is_export,
3350 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3353 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3356 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3360 #ifndef OPENSSL_NO_ECDH
3361 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3362 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3365 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3366 (void (*)(void))ecdh);
3369 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3370 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3373 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3377 #ifndef OPENSSL_NO_PSK
3378 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3380 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3381 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3382 SSL_R_DATA_LENGTH_TOO_LONG);
3385 if (ctx->psk_identity_hint != NULL)
3386 OPENSSL_free(ctx->psk_identity_hint);
3387 if (identity_hint != NULL) {
3388 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3389 if (ctx->psk_identity_hint == NULL)
3392 ctx->psk_identity_hint = NULL;
3396 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3401 if (s->session == NULL)
3402 return 1; /* session not created yet, ignored */
3404 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3405 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3408 if (s->session->psk_identity_hint != NULL)
3409 OPENSSL_free(s->session->psk_identity_hint);
3410 if (identity_hint != NULL) {
3411 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3412 if (s->session->psk_identity_hint == NULL)
3415 s->session->psk_identity_hint = NULL;
3419 const char *SSL_get_psk_identity_hint(const SSL *s)
3421 if (s == NULL || s->session == NULL)
3423 return (s->session->psk_identity_hint);
3426 const char *SSL_get_psk_identity(const SSL *s)
3428 if (s == NULL || s->session == NULL)
3430 return (s->session->psk_identity);
3433 void SSL_set_psk_client_callback(SSL *s,
3434 unsigned int (*cb) (SSL *ssl,
3443 s->psk_client_callback = cb;
3446 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3447 unsigned int (*cb) (SSL *ssl,
3456 ctx->psk_client_callback = cb;
3459 void SSL_set_psk_server_callback(SSL *s,
3460 unsigned int (*cb) (SSL *ssl,
3461 const char *identity,
3466 s->psk_server_callback = cb;
3469 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3470 unsigned int (*cb) (SSL *ssl,
3471 const char *identity,
3476 ctx->psk_server_callback = cb;
3480 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3481 void (*cb) (int write_p, int version,
3482 int content_type, const void *buf,
3483 size_t len, SSL *ssl, void *arg))
3485 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3488 void SSL_set_msg_callback(SSL *ssl,
3489 void (*cb) (int write_p, int version,
3490 int content_type, const void *buf,
3491 size_t len, SSL *ssl, void *arg))
3493 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3497 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3498 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3499 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3503 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3505 ssl_clear_hash_ctx(hash);
3506 *hash = EVP_MD_CTX_create();
3507 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
3508 EVP_MD_CTX_destroy(*hash);
3515 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3519 EVP_MD_CTX_destroy(*hash);
3523 void SSL_set_debug(SSL *s, int debug)
3528 int SSL_cache_hit(SSL *s)
3533 int SSL_is_server(SSL *s)
3538 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3539 # include "../crypto/bio/bss_file.c"
3542 IMPLEMENT_STACK_OF(SSL_CIPHER)
3543 IMPLEMENT_STACK_OF(SSL_COMP)
3544 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);