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);
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;
311 if (ctx->cert != NULL) {
313 * Earlier library versions used to copy the pointer to the CERT, not
314 * its contents; only when setting new parameters for the per-SSL
315 * copy, ssl_cert_new would be called (and the direct reference to
316 * the per-SSL_CTX settings would be lost, but those still were
317 * indirectly accessed for various purposes, and for that reason they
318 * used to be known as s->ctx->default_cert). Now we don't look at the
319 * SSL_CTX's CERT after having duplicated it once.
322 s->cert = ssl_cert_dup(ctx->cert);
326 s->cert = NULL; /* Cannot really happen (see SSL_CTX_new) */
328 s->read_ahead = ctx->read_ahead;
329 s->msg_callback = ctx->msg_callback;
330 s->msg_callback_arg = ctx->msg_callback_arg;
331 s->verify_mode = ctx->verify_mode;
333 s->verify_depth = ctx->verify_depth;
335 s->sid_ctx_length = ctx->sid_ctx_length;
336 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
337 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
338 s->verify_callback = ctx->default_verify_callback;
339 s->generate_session_id = ctx->generate_session_id;
341 s->param = X509_VERIFY_PARAM_new();
344 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
346 s->purpose = ctx->purpose;
347 s->trust = ctx->trust;
349 s->quiet_shutdown = ctx->quiet_shutdown;
350 s->max_send_fragment = ctx->max_send_fragment;
352 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
354 #ifndef OPENSSL_NO_TLSEXT
355 s->tlsext_debug_cb = 0;
356 s->tlsext_debug_arg = NULL;
357 s->tlsext_ticket_expected = 0;
358 s->tlsext_status_type = -1;
359 s->tlsext_status_expected = 0;
360 s->tlsext_ocsp_ids = NULL;
361 s->tlsext_ocsp_exts = NULL;
362 s->tlsext_ocsp_resp = NULL;
363 s->tlsext_ocsp_resplen = -1;
364 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
365 s->initial_ctx = ctx;
366 # ifndef OPENSSL_NO_NEXTPROTONEG
367 s->next_proto_negotiated = NULL;
371 s->verify_result = X509_V_OK;
373 s->method = ctx->method;
375 if (!s->method->ssl_new(s))
379 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
383 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
385 #ifndef OPENSSL_NO_PSK
386 s->psk_client_callback = ctx->psk_client_callback;
387 s->psk_server_callback = ctx->psk_server_callback;
394 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
398 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
399 unsigned int sid_ctx_len)
401 if (sid_ctx_len > sizeof ctx->sid_ctx) {
402 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
403 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
406 ctx->sid_ctx_length = sid_ctx_len;
407 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
412 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
413 unsigned int sid_ctx_len)
415 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
416 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
417 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
420 ssl->sid_ctx_length = sid_ctx_len;
421 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
426 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
428 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
429 ctx->generate_session_id = cb;
430 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
434 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
436 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
437 ssl->generate_session_id = cb;
438 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
442 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
446 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
447 * we can "construct" a session to give us the desired check - ie. to
448 * find if there's a session in the hash table that would conflict with
449 * any new session built out of this id/id_len and the ssl_version in use
454 if (id_len > sizeof r.session_id)
457 r.ssl_version = ssl->version;
458 r.session_id_length = id_len;
459 memcpy(r.session_id, id, id_len);
461 * NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
462 * callback is calling us to check the uniqueness of a shorter ID, it
463 * must be compared as a padded-out ID because that is what it will be
464 * converted to when the callback has finished choosing it.
466 if ((r.ssl_version == SSL2_VERSION) &&
467 (id_len < SSL2_SSL_SESSION_ID_LENGTH)) {
468 memset(r.session_id + id_len, 0, SSL2_SSL_SESSION_ID_LENGTH - id_len);
469 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
472 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
473 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
474 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
478 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
480 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
483 int SSL_set_purpose(SSL *s, int purpose)
485 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
488 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
490 return X509_VERIFY_PARAM_set_trust(s->param, trust);
493 int SSL_set_trust(SSL *s, int trust)
495 return X509_VERIFY_PARAM_set_trust(s->param, trust);
498 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
500 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
503 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
505 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
508 void SSL_free(SSL *s)
515 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
523 fprintf(stderr, "SSL_free, bad reference count\n");
529 X509_VERIFY_PARAM_free(s->param);
531 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
533 if (s->bbio != NULL) {
534 /* If the buffering BIO is in place, pop it off */
535 if (s->bbio == s->wbio) {
536 s->wbio = BIO_pop(s->wbio);
542 BIO_free_all(s->rbio);
543 if ((s->wbio != NULL) && (s->wbio != s->rbio))
544 BIO_free_all(s->wbio);
546 if (s->init_buf != NULL)
547 BUF_MEM_free(s->init_buf);
549 /* add extra stuff */
550 if (s->cipher_list != NULL)
551 sk_SSL_CIPHER_free(s->cipher_list);
552 if (s->cipher_list_by_id != NULL)
553 sk_SSL_CIPHER_free(s->cipher_list_by_id);
555 /* Make the next call work :-) */
556 if (s->session != NULL) {
557 ssl_clear_bad_session(s);
558 SSL_SESSION_free(s->session);
561 ssl_clear_cipher_ctx(s);
562 ssl_clear_hash_ctx(&s->read_hash);
563 ssl_clear_hash_ctx(&s->write_hash);
566 ssl_cert_free(s->cert);
567 /* Free up if allocated */
569 #ifndef OPENSSL_NO_TLSEXT
570 if (s->tlsext_hostname)
571 OPENSSL_free(s->tlsext_hostname);
573 SSL_CTX_free(s->initial_ctx);
574 # ifndef OPENSSL_NO_EC
575 if (s->tlsext_ecpointformatlist)
576 OPENSSL_free(s->tlsext_ecpointformatlist);
577 if (s->tlsext_ellipticcurvelist)
578 OPENSSL_free(s->tlsext_ellipticcurvelist);
579 # endif /* OPENSSL_NO_EC */
580 if (s->tlsext_opaque_prf_input)
581 OPENSSL_free(s->tlsext_opaque_prf_input);
582 if (s->tlsext_ocsp_exts)
583 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
584 if (s->tlsext_ocsp_ids)
585 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
586 if (s->tlsext_ocsp_resp)
587 OPENSSL_free(s->tlsext_ocsp_resp);
590 if (s->client_CA != NULL)
591 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
593 if (s->method != NULL)
594 s->method->ssl_free(s);
597 SSL_CTX_free(s->ctx);
599 #ifndef OPENSSL_NO_KRB5
600 if (s->kssl_ctx != NULL)
601 kssl_ctx_free(s->kssl_ctx);
602 #endif /* OPENSSL_NO_KRB5 */
604 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
605 if (s->next_proto_negotiated)
606 OPENSSL_free(s->next_proto_negotiated);
609 #ifndef OPENSSL_NO_SRTP
610 if (s->srtp_profiles)
611 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
617 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
620 * If the output buffering BIO is still in place, remove it
622 if (s->bbio != NULL) {
623 if (s->wbio == s->bbio) {
624 s->wbio = s->wbio->next_bio;
625 s->bbio->next_bio = NULL;
628 if ((s->rbio != NULL) && (s->rbio != rbio))
629 BIO_free_all(s->rbio);
630 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
631 BIO_free_all(s->wbio);
636 BIO *SSL_get_rbio(const SSL *s)
641 BIO *SSL_get_wbio(const SSL *s)
646 int SSL_get_fd(const SSL *s)
648 return (SSL_get_rfd(s));
651 int SSL_get_rfd(const SSL *s)
657 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
663 int SSL_get_wfd(const SSL *s)
669 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
675 #ifndef OPENSSL_NO_SOCK
676 int SSL_set_fd(SSL *s, int fd)
681 bio = BIO_new(BIO_s_socket());
684 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
687 BIO_set_fd(bio, fd, BIO_NOCLOSE);
688 SSL_set_bio(s, bio, bio);
694 int SSL_set_wfd(SSL *s, int fd)
699 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
700 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
701 bio = BIO_new(BIO_s_socket());
704 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
707 BIO_set_fd(bio, fd, BIO_NOCLOSE);
708 SSL_set_bio(s, SSL_get_rbio(s), bio);
710 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
716 int SSL_set_rfd(SSL *s, int fd)
721 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
722 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
723 bio = BIO_new(BIO_s_socket());
726 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
729 BIO_set_fd(bio, fd, BIO_NOCLOSE);
730 SSL_set_bio(s, bio, SSL_get_wbio(s));
732 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
739 /* return length of latest Finished message we sent, copy to 'buf' */
740 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
745 ret = s->s3->tmp.finish_md_len;
748 memcpy(buf, s->s3->tmp.finish_md, count);
753 /* return length of latest Finished message we expected, copy to 'buf' */
754 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
759 ret = s->s3->tmp.peer_finish_md_len;
762 memcpy(buf, s->s3->tmp.peer_finish_md, count);
767 int SSL_get_verify_mode(const SSL *s)
769 return (s->verify_mode);
772 int SSL_get_verify_depth(const SSL *s)
774 return X509_VERIFY_PARAM_get_depth(s->param);
777 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
778 return (s->verify_callback);
781 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
783 return (ctx->verify_mode);
786 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
788 return X509_VERIFY_PARAM_get_depth(ctx->param);
791 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
792 return (ctx->default_verify_callback);
795 void SSL_set_verify(SSL *s, int mode,
796 int (*callback) (int ok, X509_STORE_CTX *ctx))
798 s->verify_mode = mode;
799 if (callback != NULL)
800 s->verify_callback = callback;
803 void SSL_set_verify_depth(SSL *s, int depth)
805 X509_VERIFY_PARAM_set_depth(s->param, depth);
808 void SSL_set_read_ahead(SSL *s, int yes)
813 int SSL_get_read_ahead(const SSL *s)
815 return (s->read_ahead);
818 int SSL_pending(const SSL *s)
821 * SSL_pending cannot work properly if read-ahead is enabled
822 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
823 * impossible to fix since SSL_pending cannot report errors that may be
824 * observed while scanning the new data. (Note that SSL_pending() is
825 * often used as a boolean value, so we'd better not return -1.)
827 return (s->method->ssl_pending(s));
830 X509 *SSL_get_peer_certificate(const SSL *s)
834 if ((s == NULL) || (s->session == NULL))
837 r = s->session->peer;
842 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
847 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
851 if ((s == NULL) || (s->session == NULL)
852 || (s->session->sess_cert == NULL))
855 r = s->session->sess_cert->cert_chain;
858 * If we are a client, cert_chain includes the peer's own certificate; if
859 * we are a server, it does not.
866 * Now in theory, since the calling process own 't' it should be safe to
867 * modify. We need to be able to read f without being hassled
869 void SSL_copy_session_id(SSL *t, const SSL *f)
873 /* Do we need to to SSL locking? */
874 SSL_set_session(t, SSL_get_session(f));
877 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
879 if (t->method != f->method) {
880 t->method->ssl_free(t); /* cleanup current */
881 t->method = f->method; /* change method */
882 t->method->ssl_new(t); /* setup new */
886 if (f->cert != NULL) {
887 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
893 SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length);
896 /* Fix this so it checks all the valid key/cert options */
897 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
900 (ctx->cert == NULL) || (ctx->cert->key->x509 == NULL)) {
901 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
902 SSL_R_NO_CERTIFICATE_ASSIGNED);
905 if (ctx->cert->key->privatekey == NULL) {
906 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
907 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
910 return (X509_check_private_key
911 (ctx->cert->key->x509, ctx->cert->key->privatekey));
914 /* Fix this function so that it takes an optional type parameter */
915 int SSL_check_private_key(const SSL *ssl)
918 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
921 if (ssl->cert == NULL) {
922 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
925 if (ssl->cert->key->x509 == NULL) {
926 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
929 if (ssl->cert->key->privatekey == NULL) {
930 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
933 return (X509_check_private_key(ssl->cert->key->x509,
934 ssl->cert->key->privatekey));
937 int SSL_accept(SSL *s)
939 if (s->handshake_func == 0)
940 /* Not properly initialized yet */
941 SSL_set_accept_state(s);
943 return (s->method->ssl_accept(s));
946 int SSL_connect(SSL *s)
948 if (s->handshake_func == 0)
949 /* Not properly initialized yet */
950 SSL_set_connect_state(s);
952 return (s->method->ssl_connect(s));
955 long SSL_get_default_timeout(const SSL *s)
957 return (s->method->get_timeout());
960 int SSL_read(SSL *s, void *buf, int num)
962 if (s->handshake_func == 0) {
963 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
967 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
968 s->rwstate = SSL_NOTHING;
971 return (s->method->ssl_read(s, buf, num));
974 int SSL_peek(SSL *s, void *buf, int num)
976 if (s->handshake_func == 0) {
977 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
981 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
984 return (s->method->ssl_peek(s, buf, num));
987 int SSL_write(SSL *s, const void *buf, int num)
989 if (s->handshake_func == 0) {
990 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
994 if (s->shutdown & SSL_SENT_SHUTDOWN) {
995 s->rwstate = SSL_NOTHING;
996 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
999 return (s->method->ssl_write(s, buf, num));
1002 int SSL_shutdown(SSL *s)
1005 * Note that this function behaves differently from what one might
1006 * expect. Return values are 0 for no success (yet), 1 for success; but
1007 * calling it once is usually not enough, even if blocking I/O is used
1008 * (see ssl3_shutdown).
1011 if (s->handshake_func == 0) {
1012 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1016 if ((s != NULL) && !SSL_in_init(s))
1017 return (s->method->ssl_shutdown(s));
1022 int SSL_renegotiate(SSL *s)
1024 if (s->renegotiate == 0)
1029 return (s->method->ssl_renegotiate(s));
1032 int SSL_renegotiate_abbreviated(SSL *s)
1034 if (s->renegotiate == 0)
1039 return (s->method->ssl_renegotiate(s));
1042 int SSL_renegotiate_pending(SSL *s)
1045 * becomes true when negotiation is requested; false again once a
1046 * handshake has finished
1048 return (s->renegotiate != 0);
1051 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1056 case SSL_CTRL_GET_READ_AHEAD:
1057 return (s->read_ahead);
1058 case SSL_CTRL_SET_READ_AHEAD:
1060 s->read_ahead = larg;
1063 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1064 s->msg_callback_arg = parg;
1067 case SSL_CTRL_OPTIONS:
1068 return (s->options |= larg);
1069 case SSL_CTRL_CLEAR_OPTIONS:
1070 return (s->options &= ~larg);
1072 return (s->mode |= larg);
1073 case SSL_CTRL_CLEAR_MODE:
1074 return (s->mode &= ~larg);
1075 case SSL_CTRL_GET_MAX_CERT_LIST:
1076 return (s->max_cert_list);
1077 case SSL_CTRL_SET_MAX_CERT_LIST:
1078 l = s->max_cert_list;
1079 s->max_cert_list = larg;
1081 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1082 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1084 s->max_send_fragment = larg;
1086 case SSL_CTRL_GET_RI_SUPPORT:
1088 return s->s3->send_connection_binding;
1092 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1096 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1099 case SSL_CTRL_SET_MSG_CALLBACK:
1100 s->msg_callback = (void (*)
1101 (int write_p, int version, int content_type,
1102 const void *buf, size_t len, SSL *ssl,
1107 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1111 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1113 return ctx->sessions;
1116 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1121 case SSL_CTRL_GET_READ_AHEAD:
1122 return (ctx->read_ahead);
1123 case SSL_CTRL_SET_READ_AHEAD:
1124 l = ctx->read_ahead;
1125 ctx->read_ahead = larg;
1128 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1129 ctx->msg_callback_arg = parg;
1132 case SSL_CTRL_GET_MAX_CERT_LIST:
1133 return (ctx->max_cert_list);
1134 case SSL_CTRL_SET_MAX_CERT_LIST:
1135 l = ctx->max_cert_list;
1136 ctx->max_cert_list = larg;
1139 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1140 l = ctx->session_cache_size;
1141 ctx->session_cache_size = larg;
1143 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1144 return (ctx->session_cache_size);
1145 case SSL_CTRL_SET_SESS_CACHE_MODE:
1146 l = ctx->session_cache_mode;
1147 ctx->session_cache_mode = larg;
1149 case SSL_CTRL_GET_SESS_CACHE_MODE:
1150 return (ctx->session_cache_mode);
1152 case SSL_CTRL_SESS_NUMBER:
1153 return (lh_SSL_SESSION_num_items(ctx->sessions));
1154 case SSL_CTRL_SESS_CONNECT:
1155 return (ctx->stats.sess_connect);
1156 case SSL_CTRL_SESS_CONNECT_GOOD:
1157 return (ctx->stats.sess_connect_good);
1158 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1159 return (ctx->stats.sess_connect_renegotiate);
1160 case SSL_CTRL_SESS_ACCEPT:
1161 return (ctx->stats.sess_accept);
1162 case SSL_CTRL_SESS_ACCEPT_GOOD:
1163 return (ctx->stats.sess_accept_good);
1164 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1165 return (ctx->stats.sess_accept_renegotiate);
1166 case SSL_CTRL_SESS_HIT:
1167 return (ctx->stats.sess_hit);
1168 case SSL_CTRL_SESS_CB_HIT:
1169 return (ctx->stats.sess_cb_hit);
1170 case SSL_CTRL_SESS_MISSES:
1171 return (ctx->stats.sess_miss);
1172 case SSL_CTRL_SESS_TIMEOUTS:
1173 return (ctx->stats.sess_timeout);
1174 case SSL_CTRL_SESS_CACHE_FULL:
1175 return (ctx->stats.sess_cache_full);
1176 case SSL_CTRL_OPTIONS:
1177 return (ctx->options |= larg);
1178 case SSL_CTRL_CLEAR_OPTIONS:
1179 return (ctx->options &= ~larg);
1181 return (ctx->mode |= larg);
1182 case SSL_CTRL_CLEAR_MODE:
1183 return (ctx->mode &= ~larg);
1184 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1185 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1187 ctx->max_send_fragment = larg;
1190 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1194 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1197 case SSL_CTRL_SET_MSG_CALLBACK:
1198 ctx->msg_callback = (void (*)
1199 (int write_p, int version, int content_type,
1200 const void *buf, size_t len, SSL *ssl,
1205 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1209 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1217 return ((l > 0) ? 1 : -1);
1220 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1221 const SSL_CIPHER *const *bp)
1225 l = (*ap)->id - (*bp)->id;
1229 return ((l > 0) ? 1 : -1);
1232 /** return a STACK of the ciphers available for the SSL and in order of
1234 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1237 if (s->cipher_list != NULL) {
1238 return (s->cipher_list);
1239 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1240 return (s->ctx->cipher_list);
1246 /** return a STACK of the ciphers available for the SSL and in order of
1248 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1251 if (s->cipher_list_by_id != NULL) {
1252 return (s->cipher_list_by_id);
1253 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1254 return (s->ctx->cipher_list_by_id);
1260 /** The old interface to get the same thing as SSL_get_ciphers() */
1261 const char *SSL_get_cipher_list(const SSL *s, int n)
1264 STACK_OF(SSL_CIPHER) *sk;
1268 sk = SSL_get_ciphers(s);
1269 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1271 c = sk_SSL_CIPHER_value(sk, n);
1277 /** specify the ciphers to be used by default by the SSL_CTX */
1278 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1280 STACK_OF(SSL_CIPHER) *sk;
1282 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1283 &ctx->cipher_list_by_id, str);
1285 * ssl_create_cipher_list may return an empty stack if it was unable to
1286 * find a cipher matching the given rule string (for example if the rule
1287 * string specifies a cipher which has been disabled). This is not an
1288 * error as far as ssl_create_cipher_list is concerned, and hence
1289 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1293 else if (sk_SSL_CIPHER_num(sk) == 0) {
1294 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1300 /** specify the ciphers to be used by the SSL */
1301 int SSL_set_cipher_list(SSL *s, const char *str)
1303 STACK_OF(SSL_CIPHER) *sk;
1305 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1306 &s->cipher_list_by_id, str);
1307 /* see comment in SSL_CTX_set_cipher_list */
1310 else if (sk_SSL_CIPHER_num(sk) == 0) {
1311 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1317 /* works well for SSLv2, not so good for SSLv3 */
1318 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1321 STACK_OF(SSL_CIPHER) *sk;
1325 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1329 sk = s->session->ciphers;
1331 if (sk_SSL_CIPHER_num(sk) == 0)
1334 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1337 c = sk_SSL_CIPHER_value(sk, i);
1338 n = strlen(c->name);
1354 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1356 int (*put_cb) (const SSL_CIPHER *,
1362 #ifndef OPENSSL_NO_KRB5
1363 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1364 #endif /* OPENSSL_NO_KRB5 */
1370 put_cb = s->method->put_cipher_by_char;
1372 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1373 c = sk_SSL_CIPHER_value(sk, i);
1374 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */
1375 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
1376 (TLS1_get_client_version(s) < TLS1_2_VERSION))
1378 #ifndef OPENSSL_NO_KRB5
1379 if (((c->algorithm_mkey & SSL_kKRB5)
1380 || (c->algorithm_auth & SSL_aKRB5)) && nokrb5)
1382 #endif /* OPENSSL_NO_KRB5 */
1383 #ifndef OPENSSL_NO_PSK
1384 /* with PSK there must be client callback set */
1385 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK))
1386 && s->psk_client_callback == NULL)
1388 #endif /* OPENSSL_NO_PSK */
1389 #ifndef OPENSSL_NO_SRP
1390 if (((c->algorithm_mkey & SSL_kSRP) || (c->algorithm_auth & SSL_aSRP))
1391 && !(s->srp_ctx.srp_Mask & SSL_kSRP))
1393 #endif /* OPENSSL_NO_SRP */
1398 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1402 if (!s->renegotiate) {
1403 static SSL_CIPHER scsv = {
1404 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1406 j = put_cb(&scsv, p);
1408 #ifdef OPENSSL_RI_DEBUG
1410 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1414 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1415 static SSL_CIPHER scsv = {
1416 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1418 j = put_cb(&scsv, p);
1426 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1428 STACK_OF(SSL_CIPHER) **skp)
1430 const SSL_CIPHER *c;
1431 STACK_OF(SSL_CIPHER) *sk;
1435 s->s3->send_connection_binding = 0;
1437 n = ssl_put_cipher_by_char(s, NULL, NULL);
1438 if (n == 0 || (num % n) != 0) {
1439 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1440 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1443 if ((skp == NULL) || (*skp == NULL)) {
1444 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1446 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1451 sk_SSL_CIPHER_zero(sk);
1454 for (i = 0; i < num; i += n) {
1455 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1456 if (s->s3 && (n != 3 || !p[0]) &&
1457 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1458 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1459 /* SCSV fatal if renegotiating */
1460 if (s->renegotiate) {
1461 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1462 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1463 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1466 s->s3->send_connection_binding = 1;
1468 #ifdef OPENSSL_RI_DEBUG
1469 fprintf(stderr, "SCSV received by server\n");
1474 /* Check for TLS_FALLBACK_SCSV */
1475 if ((n != 3 || !p[0]) &&
1476 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1477 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1479 * The SCSV indicates that the client previously tried a higher
1480 * version. Fail if the current version is an unexpected
1483 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1484 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1485 SSL_R_INAPPROPRIATE_FALLBACK);
1487 ssl3_send_alert(s, SSL3_AL_FATAL,
1488 SSL_AD_INAPPROPRIATE_FALLBACK);
1495 c = ssl_get_cipher_by_char(s, p);
1498 if (!sk_SSL_CIPHER_push(sk, c)) {
1499 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1509 if ((skp == NULL) || (*skp == NULL))
1510 sk_SSL_CIPHER_free(sk);
1514 #ifndef OPENSSL_NO_TLSEXT
1515 /** return a servername extension value if provided in Client Hello, or NULL.
1516 * So far, only host_name types are defined (RFC 3546).
1519 const char *SSL_get_servername(const SSL *s, const int type)
1521 if (type != TLSEXT_NAMETYPE_host_name)
1524 return s->session && !s->tlsext_hostname ?
1525 s->session->tlsext_hostname : s->tlsext_hostname;
1528 int SSL_get_servername_type(const SSL *s)
1531 && (!s->tlsext_hostname ? s->session->
1532 tlsext_hostname : s->tlsext_hostname))
1533 return TLSEXT_NAMETYPE_host_name;
1537 # ifndef OPENSSL_NO_NEXTPROTONEG
1539 * SSL_select_next_proto implements the standard protocol selection. It is
1540 * expected that this function is called from the callback set by
1541 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1542 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1543 * not included in the length. A byte string of length 0 is invalid. No byte
1544 * string may be truncated. The current, but experimental algorithm for
1545 * selecting the protocol is: 1) If the server doesn't support NPN then this
1546 * is indicated to the callback. In this case, the client application has to
1547 * abort the connection or have a default application level protocol. 2) If
1548 * the server supports NPN, but advertises an empty list then the client
1549 * selects the first protcol in its list, but indicates via the API that this
1550 * fallback case was enacted. 3) Otherwise, the client finds the first
1551 * protocol in the server's list that it supports and selects this protocol.
1552 * This is because it's assumed that the server has better information about
1553 * which protocol a client should use. 4) If the client doesn't support any
1554 * of the server's advertised protocols, then this is treated the same as
1555 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1556 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1558 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1559 const unsigned char *server,
1560 unsigned int server_len,
1561 const unsigned char *client,
1562 unsigned int client_len)
1565 const unsigned char *result;
1566 int status = OPENSSL_NPN_UNSUPPORTED;
1569 * For each protocol in server preference order, see if we support it.
1571 for (i = 0; i < server_len;) {
1572 for (j = 0; j < client_len;) {
1573 if (server[i] == client[j] &&
1574 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1575 /* We found a match */
1576 result = &server[i];
1577 status = OPENSSL_NPN_NEGOTIATED;
1587 /* There's no overlap between our protocols and the server's list. */
1589 status = OPENSSL_NPN_NO_OVERLAP;
1592 *out = (unsigned char *)result + 1;
1593 *outlen = result[0];
1598 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1599 * client's requested protocol for this connection and returns 0. If the
1600 * client didn't request any protocol, then *data is set to NULL. Note that
1601 * the client can request any protocol it chooses. The value returned from
1602 * this function need not be a member of the list of supported protocols
1603 * provided by the callback.
1605 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1608 *data = s->next_proto_negotiated;
1612 *len = s->next_proto_negotiated_len;
1617 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1618 * a TLS server needs a list of supported protocols for Next Protocol
1619 * Negotiation. The returned list must be in wire format. The list is
1620 * returned by setting |out| to point to it and |outlen| to its length. This
1621 * memory will not be modified, but one should assume that the SSL* keeps a
1622 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1623 * wishes to advertise. Otherwise, no such extension will be included in the
1626 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1627 int (*cb) (SSL *ssl,
1630 unsigned int *outlen,
1631 void *arg), void *arg)
1633 ctx->next_protos_advertised_cb = cb;
1634 ctx->next_protos_advertised_cb_arg = arg;
1638 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1639 * client needs to select a protocol from the server's provided list. |out|
1640 * must be set to point to the selected protocol (which may be within |in|).
1641 * The length of the protocol name must be written into |outlen|. The
1642 * server's advertised protocols are provided in |in| and |inlen|. The
1643 * callback can assume that |in| is syntactically valid. The client must
1644 * select a protocol. It is fatal to the connection if this callback returns
1645 * a value other than SSL_TLSEXT_ERR_OK.
1647 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1648 int (*cb) (SSL *s, unsigned char **out,
1649 unsigned char *outlen,
1650 const unsigned char *in,
1652 void *arg), void *arg)
1654 ctx->next_proto_select_cb = cb;
1655 ctx->next_proto_select_cb_arg = arg;
1660 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1661 const char *label, size_t llen,
1662 const unsigned char *p, size_t plen,
1665 if (s->version < TLS1_VERSION)
1668 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1673 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1678 ((unsigned int)a->session_id[0]) |
1679 ((unsigned int)a->session_id[1] << 8L) |
1680 ((unsigned long)a->session_id[2] << 16L) |
1681 ((unsigned long)a->session_id[3] << 24L);
1686 * NB: If this function (or indeed the hash function which uses a sort of
1687 * coarser function than this one) is changed, ensure
1688 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1689 * being able to construct an SSL_SESSION that will collide with any existing
1690 * session with a matching session ID.
1692 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1694 if (a->ssl_version != b->ssl_version)
1696 if (a->session_id_length != b->session_id_length)
1698 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1702 * These wrapper functions should remain rather than redeclaring
1703 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1704 * variable. The reason is that the functions aren't static, they're exposed
1707 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1708 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1710 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1712 SSL_CTX *ret = NULL;
1715 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1719 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1720 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1725 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1726 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1729 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1733 memset(ret, 0, sizeof(SSL_CTX));
1737 ret->cert_store = NULL;
1738 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1739 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1740 ret->session_cache_head = NULL;
1741 ret->session_cache_tail = NULL;
1743 /* We take the system default */
1744 ret->session_timeout = meth->get_timeout();
1746 ret->new_session_cb = 0;
1747 ret->remove_session_cb = 0;
1748 ret->get_session_cb = 0;
1749 ret->generate_session_id = 0;
1751 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1753 ret->references = 1;
1754 ret->quiet_shutdown = 0;
1756 /* ret->cipher=NULL;*/
1758 ret->s2->challenge=NULL;
1759 ret->master_key=NULL;
1761 ret->s2->conn_id=NULL; */
1763 ret->info_callback = NULL;
1765 ret->app_verify_callback = 0;
1766 ret->app_verify_arg = NULL;
1768 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1769 ret->read_ahead = 0;
1770 ret->msg_callback = 0;
1771 ret->msg_callback_arg = NULL;
1772 ret->verify_mode = SSL_VERIFY_NONE;
1774 ret->verify_depth = -1; /* Don't impose a limit (but x509_lu.c does) */
1776 ret->sid_ctx_length = 0;
1777 ret->default_verify_callback = NULL;
1778 if ((ret->cert = ssl_cert_new()) == NULL)
1781 ret->default_passwd_callback = 0;
1782 ret->default_passwd_callback_userdata = NULL;
1783 ret->client_cert_cb = 0;
1784 ret->app_gen_cookie_cb = 0;
1785 ret->app_verify_cookie_cb = 0;
1787 ret->sessions = lh_SSL_SESSION_new();
1788 if (ret->sessions == NULL)
1790 ret->cert_store = X509_STORE_new();
1791 if (ret->cert_store == NULL)
1794 ssl_create_cipher_list(ret->method,
1795 &ret->cipher_list, &ret->cipher_list_by_id,
1797 SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1798 if (ret->cipher_list == NULL || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1799 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1803 ret->param = X509_VERIFY_PARAM_new();
1807 if ((ret->rsa_md5 = EVP_get_digestbyname("ssl2-md5")) == NULL) {
1808 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1811 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1812 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1815 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1816 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1820 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1823 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1825 ret->extra_certs = NULL;
1826 /* No compression for DTLS */
1827 if (meth->version != DTLS1_VERSION)
1828 ret->comp_methods = SSL_COMP_get_compression_methods();
1830 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1832 #ifndef OPENSSL_NO_TLSEXT
1833 ret->tlsext_servername_callback = 0;
1834 ret->tlsext_servername_arg = NULL;
1835 /* Setup RFC4507 ticket keys */
1836 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1837 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1838 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1839 ret->options |= SSL_OP_NO_TICKET;
1841 ret->tlsext_status_cb = 0;
1842 ret->tlsext_status_arg = NULL;
1844 # ifndef OPENSSL_NO_NEXTPROTONEG
1845 ret->next_protos_advertised_cb = 0;
1846 ret->next_proto_select_cb = 0;
1849 #ifndef OPENSSL_NO_PSK
1850 ret->psk_identity_hint = NULL;
1851 ret->psk_client_callback = NULL;
1852 ret->psk_server_callback = NULL;
1854 #ifndef OPENSSL_NO_SRP
1855 SSL_CTX_SRP_CTX_init(ret);
1857 #ifndef OPENSSL_NO_BUF_FREELISTS
1858 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1859 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1860 if (!ret->rbuf_freelist)
1862 ret->rbuf_freelist->chunklen = 0;
1863 ret->rbuf_freelist->len = 0;
1864 ret->rbuf_freelist->head = NULL;
1865 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1866 if (!ret->wbuf_freelist) {
1867 OPENSSL_free(ret->rbuf_freelist);
1870 ret->wbuf_freelist->chunklen = 0;
1871 ret->wbuf_freelist->len = 0;
1872 ret->wbuf_freelist->head = NULL;
1874 #ifndef OPENSSL_NO_ENGINE
1875 ret->client_cert_engine = NULL;
1876 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1877 # define eng_strx(x) #x
1878 # define eng_str(x) eng_strx(x)
1879 /* Use specific client engine automatically... ignore errors */
1882 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1885 ENGINE_load_builtin_engines();
1886 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1888 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1894 * Default is to connect to non-RI servers. When RI is more widely
1895 * deployed might change this.
1897 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1900 * Disable SSLv2 by default, callers that want to enable SSLv2 will have to
1901 * explicitly clear this option via either of SSL_CTX_clear_options() or
1902 * SSL_clear_options().
1904 ret->options |= SSL_OP_NO_SSLv2;
1908 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
1916 static void SSL_COMP_free(SSL_COMP *comp)
1922 #ifndef OPENSSL_NO_BUF_FREELISTS
1923 static void ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1925 SSL3_BUF_FREELIST_ENTRY *ent, *next;
1926 for (ent = list->head; ent; ent = next) {
1934 void SSL_CTX_free(SSL_CTX *a)
1941 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
1943 REF_PRINT("SSL_CTX", a);
1949 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
1955 X509_VERIFY_PARAM_free(a->param);
1958 * Free internal session cache. However: the remove_cb() may reference
1959 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1960 * after the sessions were flushed.
1961 * As the ex_data handling routines might also touch the session cache,
1962 * the most secure solution seems to be: empty (flush) the cache, then
1963 * free ex_data, then finally free the cache.
1964 * (See ticket [openssl.org #212].)
1966 if (a->sessions != NULL)
1967 SSL_CTX_flush_sessions(a, 0);
1969 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1971 if (a->sessions != NULL)
1972 lh_SSL_SESSION_free(a->sessions);
1974 if (a->cert_store != NULL)
1975 X509_STORE_free(a->cert_store);
1976 if (a->cipher_list != NULL)
1977 sk_SSL_CIPHER_free(a->cipher_list);
1978 if (a->cipher_list_by_id != NULL)
1979 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1980 if (a->cert != NULL)
1981 ssl_cert_free(a->cert);
1982 if (a->client_CA != NULL)
1983 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
1984 if (a->extra_certs != NULL)
1985 sk_X509_pop_free(a->extra_certs, X509_free);
1986 #if 0 /* This should never be done, since it
1987 * removes a global database */
1988 if (a->comp_methods != NULL)
1989 sk_SSL_COMP_pop_free(a->comp_methods, SSL_COMP_free);
1991 a->comp_methods = NULL;
1994 #ifndef OPENSSL_NO_SRTP
1995 if (a->srtp_profiles)
1996 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
1999 #ifndef OPENSSL_NO_PSK
2000 if (a->psk_identity_hint)
2001 OPENSSL_free(a->psk_identity_hint);
2003 #ifndef OPENSSL_NO_SRP
2004 SSL_CTX_SRP_CTX_free(a);
2006 #ifndef OPENSSL_NO_ENGINE
2007 if (a->client_cert_engine)
2008 ENGINE_finish(a->client_cert_engine);
2011 #ifndef OPENSSL_NO_BUF_FREELISTS
2012 if (a->wbuf_freelist)
2013 ssl_buf_freelist_free(a->wbuf_freelist);
2014 if (a->rbuf_freelist)
2015 ssl_buf_freelist_free(a->rbuf_freelist);
2021 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2023 ctx->default_passwd_callback = cb;
2026 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2028 ctx->default_passwd_callback_userdata = u;
2031 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2032 int (*cb) (X509_STORE_CTX *, void *),
2035 ctx->app_verify_callback = cb;
2036 ctx->app_verify_arg = arg;
2039 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2040 int (*cb) (int, X509_STORE_CTX *))
2042 ctx->verify_mode = mode;
2043 ctx->default_verify_callback = cb;
2046 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2048 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2051 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2054 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2055 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2056 int rsa_tmp_export, dh_tmp_export, kl;
2057 unsigned long mask_k, mask_a, emask_k, emask_a;
2058 #ifndef OPENSSL_NO_ECDSA
2059 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2061 #ifndef OPENSSL_NO_ECDH
2062 int have_ecdh_tmp, ecdh_ok;
2064 #ifndef OPENSSL_NO_EC
2066 EVP_PKEY *ecc_pkey = NULL;
2067 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2072 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2074 #ifndef OPENSSL_NO_RSA
2075 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2076 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2077 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2079 rsa_tmp = rsa_tmp_export = 0;
2081 #ifndef OPENSSL_NO_DH
2082 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
2083 dh_tmp_export = (c->dh_tmp_cb != NULL ||
2084 (dh_tmp && DH_size(c->dh_tmp) * 8 <= kl));
2086 dh_tmp = dh_tmp_export = 0;
2089 #ifndef OPENSSL_NO_ECDH
2090 have_ecdh_tmp = (c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
2092 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2093 rsa_enc = (cpk->x509 != NULL && cpk->privatekey != NULL);
2094 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2095 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2096 rsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL);
2097 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2098 dsa_sign = (cpk->x509 != NULL && cpk->privatekey != NULL);
2099 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2100 dh_rsa = (cpk->x509 != NULL && cpk->privatekey != NULL);
2101 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2102 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2103 /* FIX THIS EAY EAY EAY */
2104 dh_dsa = (cpk->x509 != NULL && cpk->privatekey != NULL);
2105 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2106 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2107 #ifndef OPENSSL_NO_EC
2108 have_ecc_cert = (cpk->x509 != NULL && cpk->privatekey != NULL);
2117 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2118 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2119 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2122 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2123 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2124 mask_k |= SSL_kGOST;
2125 mask_a |= SSL_aGOST01;
2127 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2128 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2129 mask_k |= SSL_kGOST;
2130 mask_a |= SSL_aGOST94;
2133 if (rsa_enc || (rsa_tmp && rsa_sign))
2135 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2136 emask_k |= SSL_kRSA;
2139 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
2140 if ((dh_tmp || dh_rsa || dh_dsa) && (rsa_enc || rsa_sign || dsa_sign))
2142 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2143 (rsa_enc || rsa_sign || dsa_sign))
2144 emask_k |= SSL_kEDH;
2148 emask_k |= SSL_kEDH;
2156 emask_k |= SSL_kDHr;
2161 emask_k |= SSL_kDHd;
2163 if (rsa_enc || rsa_sign) {
2165 emask_a |= SSL_aRSA;
2170 emask_a |= SSL_aDSS;
2173 mask_a |= SSL_aNULL;
2174 emask_a |= SSL_aNULL;
2176 #ifndef OPENSSL_NO_KRB5
2177 mask_k |= SSL_kKRB5;
2178 mask_a |= SSL_aKRB5;
2179 emask_k |= SSL_kKRB5;
2180 emask_a |= SSL_aKRB5;
2184 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2185 * depending on the key usage extension.
2187 #ifndef OPENSSL_NO_EC
2188 if (have_ecc_cert) {
2189 /* This call populates extension flags (ex_flags) */
2190 x = (c->pkeys[SSL_PKEY_ECC]).x509;
2191 X509_check_purpose(x, -1, 0);
2192 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2193 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2194 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2195 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2196 ecc_pkey = X509_get_pubkey(x);
2197 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2198 EVP_PKEY_free(ecc_pkey);
2199 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2200 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2201 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2203 #ifndef OPENSSL_NO_ECDH
2206 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2207 mask_k |= SSL_kECDHr;
2208 mask_a |= SSL_aECDH;
2209 if (ecc_pkey_size <= 163) {
2210 emask_k |= SSL_kECDHr;
2211 emask_a |= SSL_aECDH;
2215 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2216 mask_k |= SSL_kECDHe;
2217 mask_a |= SSL_aECDH;
2218 if (ecc_pkey_size <= 163) {
2219 emask_k |= SSL_kECDHe;
2220 emask_a |= SSL_aECDH;
2225 #ifndef OPENSSL_NO_ECDSA
2227 mask_a |= SSL_aECDSA;
2228 emask_a |= SSL_aECDSA;
2233 #ifndef OPENSSL_NO_ECDH
2234 if (have_ecdh_tmp) {
2235 mask_k |= SSL_kEECDH;
2236 emask_k |= SSL_kEECDH;
2240 #ifndef OPENSSL_NO_PSK
2243 emask_k |= SSL_kPSK;
2244 emask_a |= SSL_aPSK;
2249 c->export_mask_k = emask_k;
2250 c->export_mask_a = emask_a;
2254 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2255 #define ku_reject(x, usage) \
2256 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2258 #ifndef OPENSSL_NO_EC
2260 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2262 unsigned long alg_k, alg_a;
2263 EVP_PKEY *pkey = NULL;
2265 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2266 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2268 alg_k = cs->algorithm_mkey;
2269 alg_a = cs->algorithm_auth;
2271 if (SSL_C_IS_EXPORT(cs)) {
2272 /* ECDH key length in export ciphers must be <= 163 bits */
2273 pkey = X509_get_pubkey(x);
2276 keysize = EVP_PKEY_bits(pkey);
2277 EVP_PKEY_free(pkey);
2282 /* This call populates the ex_flags field correctly */
2283 X509_check_purpose(x, -1, 0);
2284 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2285 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2286 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2288 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2289 /* key usage, if present, must allow key agreement */
2290 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2291 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2292 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2295 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2296 /* signature alg must be ECDSA */
2297 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2298 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2299 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2303 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2304 /* signature alg must be RSA */
2306 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2307 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2308 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2313 if (alg_a & SSL_aECDSA) {
2314 /* key usage, if present, must allow signing */
2315 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2316 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2317 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2322 return 1; /* all checks are ok */
2327 /* THIS NEEDS CLEANING UP */
2328 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2330 unsigned long alg_k, alg_a;
2335 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2337 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2338 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2340 if (alg_k & (SSL_kECDHr | SSL_kECDHe)) {
2342 * we don't need to look at SSL_kEECDH since no certificate is needed
2343 * for anon ECDH and for authenticated EECDH, the check for the auth
2344 * algorithm will set i correctly NOTE: For ECDH-RSA, we need an ECC
2345 * not an RSA cert but for EECDH-RSA we need an RSA cert. Placing the
2346 * checks for SSL_kECDH before RSA checks ensures the correct cert is
2350 } else if (alg_a & SSL_aECDSA) {
2352 } else if (alg_k & SSL_kDHr)
2353 i = SSL_PKEY_DH_RSA;
2354 else if (alg_k & SSL_kDHd)
2355 i = SSL_PKEY_DH_DSA;
2356 else if (alg_a & SSL_aDSS)
2357 i = SSL_PKEY_DSA_SIGN;
2358 else if (alg_a & SSL_aRSA) {
2359 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2360 i = SSL_PKEY_RSA_SIGN;
2362 i = SSL_PKEY_RSA_ENC;
2363 } else if (alg_a & SSL_aKRB5) {
2364 /* VRS something else here? */
2366 } else if (alg_a & SSL_aGOST94)
2367 i = SSL_PKEY_GOST94;
2368 else if (alg_a & SSL_aGOST01)
2369 i = SSL_PKEY_GOST01;
2370 else { /* if (alg_a & SSL_aNULL) */
2372 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY, ERR_R_INTERNAL_ERROR);
2376 return c->pkeys + i;
2379 X509 *ssl_get_server_send_cert(const SSL *s)
2382 cpk = ssl_get_server_send_pkey(s);
2388 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2391 unsigned long alg_a;
2395 alg_a = cipher->algorithm_auth;
2398 if ((alg_a & SSL_aDSS) &&
2399 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2400 idx = SSL_PKEY_DSA_SIGN;
2401 else if (alg_a & SSL_aRSA) {
2402 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2403 idx = SSL_PKEY_RSA_SIGN;
2404 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2405 idx = SSL_PKEY_RSA_ENC;
2406 } else if ((alg_a & SSL_aECDSA) &&
2407 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2410 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2414 *pmd = c->pkeys[idx].digest;
2415 return c->pkeys[idx].privatekey;
2418 void ssl_update_cache(SSL *s, int mode)
2423 * If the session_id_length is 0, we are not supposed to cache it, and it
2424 * would be rather hard to do anyway :-)
2426 if (s->session->session_id_length == 0)
2429 i = s->session_ctx->session_cache_mode;
2430 if ((i & mode) && (!s->hit)
2431 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2432 || SSL_CTX_add_session(s->session_ctx, s->session))
2433 && (s->session_ctx->new_session_cb != NULL)) {
2434 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2435 if (!s->session_ctx->new_session_cb(s, s->session))
2436 SSL_SESSION_free(s->session);
2439 /* auto flush every 255 connections */
2440 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2441 if ((((mode & SSL_SESS_CACHE_CLIENT)
2442 ? s->session_ctx->stats.sess_connect_good
2443 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2444 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2449 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2454 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2459 if (s->method != meth) {
2460 if (s->handshake_func != NULL)
2461 conn = (s->handshake_func == s->method->ssl_connect);
2463 if (s->method->version == meth->version)
2466 s->method->ssl_free(s);
2468 ret = s->method->ssl_new(s);
2472 s->handshake_func = meth->ssl_connect;
2474 s->handshake_func = meth->ssl_accept;
2479 int SSL_get_error(const SSL *s, int i)
2486 return (SSL_ERROR_NONE);
2489 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2490 * where we do encode the error
2492 if ((l = ERR_peek_error()) != 0) {
2493 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2494 return (SSL_ERROR_SYSCALL);
2496 return (SSL_ERROR_SSL);
2499 if ((i < 0) && SSL_want_read(s)) {
2500 bio = SSL_get_rbio(s);
2501 if (BIO_should_read(bio))
2502 return (SSL_ERROR_WANT_READ);
2503 else if (BIO_should_write(bio))
2505 * This one doesn't make too much sense ... We never try to write
2506 * to the rbio, and an application program where rbio and wbio
2507 * are separate couldn't even know what it should wait for.
2508 * However if we ever set s->rwstate incorrectly (so that we have
2509 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2510 * wbio *are* the same, this test works around that bug; so it
2511 * might be safer to keep it.
2513 return (SSL_ERROR_WANT_WRITE);
2514 else if (BIO_should_io_special(bio)) {
2515 reason = BIO_get_retry_reason(bio);
2516 if (reason == BIO_RR_CONNECT)
2517 return (SSL_ERROR_WANT_CONNECT);
2518 else if (reason == BIO_RR_ACCEPT)
2519 return (SSL_ERROR_WANT_ACCEPT);
2521 return (SSL_ERROR_SYSCALL); /* unknown */
2525 if ((i < 0) && SSL_want_write(s)) {
2526 bio = SSL_get_wbio(s);
2527 if (BIO_should_write(bio))
2528 return (SSL_ERROR_WANT_WRITE);
2529 else if (BIO_should_read(bio))
2531 * See above (SSL_want_read(s) with BIO_should_write(bio))
2533 return (SSL_ERROR_WANT_READ);
2534 else if (BIO_should_io_special(bio)) {
2535 reason = BIO_get_retry_reason(bio);
2536 if (reason == BIO_RR_CONNECT)
2537 return (SSL_ERROR_WANT_CONNECT);
2538 else if (reason == BIO_RR_ACCEPT)
2539 return (SSL_ERROR_WANT_ACCEPT);
2541 return (SSL_ERROR_SYSCALL);
2544 if ((i < 0) && SSL_want_x509_lookup(s)) {
2545 return (SSL_ERROR_WANT_X509_LOOKUP);
2549 if (s->version == SSL2_VERSION) {
2550 /* assume it is the socket being closed */
2551 return (SSL_ERROR_ZERO_RETURN);
2553 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2554 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2555 return (SSL_ERROR_ZERO_RETURN);
2558 return (SSL_ERROR_SYSCALL);
2561 int SSL_do_handshake(SSL *s)
2565 if (s->handshake_func == NULL) {
2566 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2570 s->method->ssl_renegotiate_check(s);
2572 if (SSL_in_init(s) || SSL_in_before(s)) {
2573 ret = s->handshake_func(s);
2579 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2580 * calls will reset it
2582 void SSL_set_accept_state(SSL *s)
2586 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2587 s->handshake_func = s->method->ssl_accept;
2588 /* clear the current cipher */
2589 ssl_clear_cipher_ctx(s);
2590 ssl_clear_hash_ctx(&s->read_hash);
2591 ssl_clear_hash_ctx(&s->write_hash);
2594 void SSL_set_connect_state(SSL *s)
2598 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2599 s->handshake_func = s->method->ssl_connect;
2600 /* clear the current cipher */
2601 ssl_clear_cipher_ctx(s);
2602 ssl_clear_hash_ctx(&s->read_hash);
2603 ssl_clear_hash_ctx(&s->write_hash);
2606 int ssl_undefined_function(SSL *s)
2608 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2612 int ssl_undefined_void_function(void)
2614 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2615 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2619 int ssl_undefined_const_function(const SSL *s)
2621 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2622 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2626 SSL_METHOD *ssl_bad_method(int ver)
2628 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2632 const char *SSL_get_version(const SSL *s)
2634 if (s->version == TLS1_2_VERSION)
2636 else if (s->version == TLS1_1_VERSION)
2638 else if (s->version == TLS1_VERSION)
2640 else if (s->version == SSL3_VERSION)
2642 else if (s->version == SSL2_VERSION)
2648 SSL *SSL_dup(SSL *s)
2650 STACK_OF(X509_NAME) *sk;
2655 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2658 ret->version = s->version;
2659 ret->type = s->type;
2660 ret->method = s->method;
2662 if (s->session != NULL) {
2663 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2664 SSL_copy_session_id(ret, s);
2667 * No session has been established yet, so we have to expect that
2668 * s->cert or ret->cert will be changed later -- they should not both
2669 * point to the same object, and thus we can't use
2670 * SSL_copy_session_id.
2673 ret->method->ssl_free(ret);
2674 ret->method = s->method;
2675 ret->method->ssl_new(ret);
2677 if (s->cert != NULL) {
2678 if (ret->cert != NULL) {
2679 ssl_cert_free(ret->cert);
2681 ret->cert = ssl_cert_dup(s->cert);
2682 if (ret->cert == NULL)
2686 SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length);
2689 ret->options = s->options;
2690 ret->mode = s->mode;
2691 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2692 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2693 ret->msg_callback = s->msg_callback;
2694 ret->msg_callback_arg = s->msg_callback_arg;
2695 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2696 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2697 ret->generate_session_id = s->generate_session_id;
2699 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2701 ret->debug = s->debug;
2703 /* copy app data, a little dangerous perhaps */
2704 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2707 /* setup rbio, and wbio */
2708 if (s->rbio != NULL) {
2709 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2712 if (s->wbio != NULL) {
2713 if (s->wbio != s->rbio) {
2714 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2717 ret->wbio = ret->rbio;
2719 ret->rwstate = s->rwstate;
2720 ret->in_handshake = s->in_handshake;
2721 ret->handshake_func = s->handshake_func;
2722 ret->server = s->server;
2723 ret->renegotiate = s->renegotiate;
2724 ret->new_session = s->new_session;
2725 ret->quiet_shutdown = s->quiet_shutdown;
2726 ret->shutdown = s->shutdown;
2727 ret->state = s->state; /* SSL_dup does not really work at any state,
2729 ret->rstate = s->rstate;
2730 ret->init_num = 0; /* would have to copy ret->init_buf,
2731 * ret->init_msg, ret->init_num,
2735 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2737 /* dup the cipher_list and cipher_list_by_id stacks */
2738 if (s->cipher_list != NULL) {
2739 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2742 if (s->cipher_list_by_id != NULL)
2743 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2747 /* Dup the client_CA list */
2748 if (s->client_CA != NULL) {
2749 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2751 ret->client_CA = sk;
2752 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2753 xn = sk_X509_NAME_value(sk, i);
2754 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2770 void ssl_clear_cipher_ctx(SSL *s)
2772 if (s->enc_read_ctx != NULL) {
2773 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2774 OPENSSL_free(s->enc_read_ctx);
2775 s->enc_read_ctx = NULL;
2777 if (s->enc_write_ctx != NULL) {
2778 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2779 OPENSSL_free(s->enc_write_ctx);
2780 s->enc_write_ctx = NULL;
2782 #ifndef OPENSSL_NO_COMP
2783 if (s->expand != NULL) {
2784 COMP_CTX_free(s->expand);
2787 if (s->compress != NULL) {
2788 COMP_CTX_free(s->compress);
2794 /* Fix this function so that it takes an optional type parameter */
2795 X509 *SSL_get_certificate(const SSL *s)
2797 if (s->cert != NULL)
2798 return (s->cert->key->x509);
2803 /* Fix this function so that it takes an optional type parameter */
2804 EVP_PKEY *SSL_get_privatekey(SSL *s)
2806 if (s->cert != NULL)
2807 return (s->cert->key->privatekey);
2812 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2814 if ((s->session != NULL) && (s->session->cipher != NULL))
2815 return (s->session->cipher);
2819 #ifdef OPENSSL_NO_COMP
2820 const void *SSL_get_current_compression(SSL *s)
2825 const void *SSL_get_current_expansion(SSL *s)
2831 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2833 if (s->compress != NULL)
2834 return (s->compress->meth);
2838 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2840 if (s->expand != NULL)
2841 return (s->expand->meth);
2846 int ssl_init_wbio_buffer(SSL *s, int push)
2850 if (s->bbio == NULL) {
2851 bbio = BIO_new(BIO_f_buffer());
2857 if (s->bbio == s->wbio)
2858 s->wbio = BIO_pop(s->wbio);
2860 (void)BIO_reset(bbio);
2861 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2862 if (!BIO_set_read_buffer_size(bbio, 1)) {
2863 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
2867 if (s->wbio != bbio)
2868 s->wbio = BIO_push(bbio, s->wbio);
2870 if (s->wbio == bbio)
2871 s->wbio = BIO_pop(bbio);
2876 void ssl_free_wbio_buffer(SSL *s)
2878 if (s->bbio == NULL)
2881 if (s->bbio == s->wbio) {
2882 /* remove buffering */
2883 s->wbio = BIO_pop(s->wbio);
2884 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
2885 * adding one more preprocessor symbol */
2886 assert(s->wbio != NULL);
2893 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
2895 ctx->quiet_shutdown = mode;
2898 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2900 return (ctx->quiet_shutdown);
2903 void SSL_set_quiet_shutdown(SSL *s, int mode)
2905 s->quiet_shutdown = mode;
2908 int SSL_get_quiet_shutdown(const SSL *s)
2910 return (s->quiet_shutdown);
2913 void SSL_set_shutdown(SSL *s, int mode)
2918 int SSL_get_shutdown(const SSL *s)
2920 return (s->shutdown);
2923 int SSL_version(const SSL *s)
2925 return (s->version);
2928 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2933 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
2935 CERT *ocert = ssl->cert;
2936 if (ssl->ctx == ctx)
2938 #ifndef OPENSSL_NO_TLSEXT
2940 ctx = ssl->initial_ctx;
2942 ssl->cert = ssl_cert_dup(ctx->cert);
2943 if (ocert != NULL) {
2945 /* Copy negotiated digests from original */
2946 for (i = 0; i < SSL_PKEY_NUM; i++) {
2947 CERT_PKEY *cpk = ocert->pkeys + i;
2948 CERT_PKEY *rpk = ssl->cert->pkeys + i;
2949 rpk->digest = cpk->digest;
2951 ssl_cert_free(ocert);
2955 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
2956 * so setter APIs must prevent invalid lengths from entering the system.
2958 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
2961 * If the session ID context matches that of the parent SSL_CTX,
2962 * inherit it from the new SSL_CTX as well. If however the context does
2963 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
2964 * leave it unchanged.
2966 if ((ssl->ctx != NULL) &&
2967 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
2968 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
2969 ssl->sid_ctx_length = ctx->sid_ctx_length;
2970 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
2973 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
2974 if (ssl->ctx != NULL)
2975 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2981 #ifndef OPENSSL_NO_STDIO
2982 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2984 return (X509_STORE_set_default_paths(ctx->cert_store));
2987 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2990 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
2994 void SSL_set_info_callback(SSL *ssl,
2995 void (*cb) (const SSL *ssl, int type, int val))
2997 ssl->info_callback = cb;
3001 * One compiler (Diab DCC) doesn't like argument names in returned function
3004 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3007 return ssl->info_callback;
3010 int SSL_state(const SSL *ssl)
3012 return (ssl->state);
3015 void SSL_set_state(SSL *ssl, int state)
3020 void SSL_set_verify_result(SSL *ssl, long arg)
3022 ssl->verify_result = arg;
3025 long SSL_get_verify_result(const SSL *ssl)
3027 return (ssl->verify_result);
3030 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3031 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3033 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3034 new_func, dup_func, free_func);
3037 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3039 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3042 void *SSL_get_ex_data(const SSL *s, int idx)
3044 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3047 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3048 CRYPTO_EX_dup *dup_func,
3049 CRYPTO_EX_free *free_func)
3051 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3052 new_func, dup_func, free_func);
3055 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3057 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3060 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3062 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3070 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3072 return (ctx->cert_store);
3075 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3077 if (ctx->cert_store != NULL)
3078 X509_STORE_free(ctx->cert_store);
3079 ctx->cert_store = store;
3082 int SSL_want(const SSL *s)
3084 return (s->rwstate);
3088 * \brief Set the callback for generating temporary RSA keys.
3089 * \param ctx the SSL context.
3090 * \param cb the callback
3093 #ifndef OPENSSL_NO_RSA
3094 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3098 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3101 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3105 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3111 * \brief The RSA temporary key callback function.
3112 * \param ssl the SSL session.
3113 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3114 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3115 * of the required key in bits.
3116 * \return the temporary RSA key.
3117 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3120 RSA *cb(SSL *ssl, int is_export, int keylength)
3126 * \brief Set the callback for generating temporary DH keys.
3127 * \param ctx the SSL context.
3128 * \param dh the callback
3131 #ifndef OPENSSL_NO_DH
3132 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3133 DH *(*dh) (SSL *ssl, int is_export,
3136 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3139 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3142 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3146 #ifndef OPENSSL_NO_ECDH
3147 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3148 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3151 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3152 (void (*)(void))ecdh);
3155 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3156 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3159 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3163 #ifndef OPENSSL_NO_PSK
3164 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3166 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3167 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3168 SSL_R_DATA_LENGTH_TOO_LONG);
3171 if (ctx->psk_identity_hint != NULL)
3172 OPENSSL_free(ctx->psk_identity_hint);
3173 if (identity_hint != NULL) {
3174 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3175 if (ctx->psk_identity_hint == NULL)
3178 ctx->psk_identity_hint = NULL;
3182 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3187 if (s->session == NULL)
3188 return 1; /* session not created yet, ignored */
3190 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3191 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3194 if (s->session->psk_identity_hint != NULL)
3195 OPENSSL_free(s->session->psk_identity_hint);
3196 if (identity_hint != NULL) {
3197 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3198 if (s->session->psk_identity_hint == NULL)
3201 s->session->psk_identity_hint = NULL;
3205 const char *SSL_get_psk_identity_hint(const SSL *s)
3207 if (s == NULL || s->session == NULL)
3209 return (s->session->psk_identity_hint);
3212 const char *SSL_get_psk_identity(const SSL *s)
3214 if (s == NULL || s->session == NULL)
3216 return (s->session->psk_identity);
3219 void SSL_set_psk_client_callback(SSL *s,
3220 unsigned int (*cb) (SSL *ssl,
3229 s->psk_client_callback = cb;
3232 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3233 unsigned int (*cb) (SSL *ssl,
3242 ctx->psk_client_callback = cb;
3245 void SSL_set_psk_server_callback(SSL *s,
3246 unsigned int (*cb) (SSL *ssl,
3247 const char *identity,
3252 s->psk_server_callback = cb;
3255 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3256 unsigned int (*cb) (SSL *ssl,
3257 const char *identity,
3262 ctx->psk_server_callback = cb;
3266 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3267 void (*cb) (int write_p, int version,
3268 int content_type, const void *buf,
3269 size_t len, SSL *ssl, void *arg))
3271 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3274 void SSL_set_msg_callback(SSL *ssl,
3275 void (*cb) (int write_p, int version,
3276 int content_type, const void *buf,
3277 size_t len, SSL *ssl, void *arg))
3279 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3283 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3284 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3285 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3289 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3291 ssl_clear_hash_ctx(hash);
3292 *hash = EVP_MD_CTX_create();
3294 EVP_DigestInit_ex(*hash, md, NULL);
3298 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3302 EVP_MD_CTX_destroy(*hash);
3306 void SSL_set_debug(SSL *s, int debug)
3311 int SSL_cache_hit(SSL *s)
3316 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3317 # include "../crypto/bio/bss_file.c"
3320 IMPLEMENT_STACK_OF(SSL_CIPHER)
3321 IMPLEMENT_STACK_OF(SSL_COMP)
3322 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);