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)
196 if (s->method == NULL) {
197 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
201 if (ssl_clear_bad_session(s)) {
202 SSL_SESSION_free(s->session);
210 if (s->renegotiate) {
211 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
217 s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT);
219 s->version = s->method->version;
220 s->client_version = s->version;
221 s->rwstate = SSL_NOTHING;
222 s->rstate = SSL_ST_READ_HEADER;
224 if (s->init_buf != NULL) {
225 BUF_MEM_free(s->init_buf);
229 ssl_clear_cipher_ctx(s);
230 ssl_clear_hash_ctx(&s->read_hash);
231 ssl_clear_hash_ctx(&s->write_hash);
236 * Check to see if we were changed into a different method, if so, revert
237 * back if we are not doing session-id reuse.
239 if (!s->in_handshake && (s->session == NULL)
240 && (s->method != s->ctx->method)) {
241 s->method->ssl_free(s);
242 s->method = s->ctx->method;
243 if (!s->method->ssl_new(s))
246 s->method->ssl_clear(s);
248 read_ahead = RECORD_LAYER_get_read_ahead(&s->rlayer);
249 rp = SSL3_BUFFER_get_buf(RECORD_LAYER_get_rbuf(&s->rlayer));
250 rlen = SSL3_BUFFER_get_len(RECORD_LAYER_get_rbuf(&s->rlayer));
251 memset(&s->rlayer, 0, sizeof s->rlayer);
252 SSL3_BUFFER_set_buf(RECORD_LAYER_get_rbuf(&s->rlayer), rp);
253 SSL3_BUFFER_set_len(RECORD_LAYER_get_rbuf(&s->rlayer), rlen);
255 /* Do I need to do this? As far as I can tell read_ahead did not
256 * previously get reset by SSL_clear...so I'll keep it that way..but is
259 RECORD_LAYER_set_read_ahead(&s->rlayer, read_ahead);
260 RECORD_LAYER_set_ssl(&s->rlayer, 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),
274 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
275 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
276 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
277 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
283 SSL *SSL_new(SSL_CTX *ctx)
288 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
291 if (ctx->method == NULL) {
292 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
296 s = (SSL *)OPENSSL_malloc(sizeof(SSL));
299 memset(s, 0, sizeof(SSL));
301 RECORD_LAYER_set_ssl(&s->rlayer, s);
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 * Earlier library versions used to copy the pointer to the CERT, not
313 * its contents; only when setting new parameters for the per-SSL
314 * copy, ssl_cert_new would be called (and the direct reference to
315 * the per-SSL_CTX settings would be lost, but those still were
316 * indirectly accessed for various purposes, and for that reason they
317 * used to be known as s->ctx->default_cert). Now we don't look at the
318 * SSL_CTX's CERT after having duplicated it once.
320 s->cert = ssl_cert_dup(ctx->cert);
324 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
325 s->msg_callback = ctx->msg_callback;
326 s->msg_callback_arg = ctx->msg_callback_arg;
327 s->verify_mode = ctx->verify_mode;
328 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
329 s->sid_ctx_length = ctx->sid_ctx_length;
330 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
331 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
332 s->verify_callback = ctx->default_verify_callback;
333 s->generate_session_id = ctx->generate_session_id;
335 s->param = X509_VERIFY_PARAM_new();
338 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
339 s->quiet_shutdown = ctx->quiet_shutdown;
340 s->max_send_fragment = ctx->max_send_fragment;
342 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
344 #ifndef OPENSSL_NO_TLSEXT
345 s->tlsext_debug_cb = 0;
346 s->tlsext_debug_arg = NULL;
347 s->tlsext_ticket_expected = 0;
348 s->tlsext_status_type = -1;
349 s->tlsext_status_expected = 0;
350 s->tlsext_ocsp_ids = NULL;
351 s->tlsext_ocsp_exts = NULL;
352 s->tlsext_ocsp_resp = NULL;
353 s->tlsext_ocsp_resplen = -1;
354 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
355 s->initial_ctx = ctx;
356 # ifndef OPENSSL_NO_EC
357 if (ctx->tlsext_ecpointformatlist) {
358 s->tlsext_ecpointformatlist =
359 BUF_memdup(ctx->tlsext_ecpointformatlist,
360 ctx->tlsext_ecpointformatlist_length);
361 if (!s->tlsext_ecpointformatlist)
363 s->tlsext_ecpointformatlist_length =
364 ctx->tlsext_ecpointformatlist_length;
366 if (ctx->tlsext_ellipticcurvelist) {
367 s->tlsext_ellipticcurvelist =
368 BUF_memdup(ctx->tlsext_ellipticcurvelist,
369 ctx->tlsext_ellipticcurvelist_length);
370 if (!s->tlsext_ellipticcurvelist)
372 s->tlsext_ellipticcurvelist_length =
373 ctx->tlsext_ellipticcurvelist_length;
376 # ifndef OPENSSL_NO_NEXTPROTONEG
377 s->next_proto_negotiated = NULL;
380 if (s->ctx->alpn_client_proto_list) {
381 s->alpn_client_proto_list =
382 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
383 if (s->alpn_client_proto_list == NULL)
385 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
386 s->ctx->alpn_client_proto_list_len);
387 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
391 s->verify_result = X509_V_OK;
393 s->method = ctx->method;
395 if (!s->method->ssl_new(s))
399 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
404 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
406 #ifndef OPENSSL_NO_PSK
407 s->psk_client_callback = ctx->psk_client_callback;
408 s->psk_server_callback = ctx->psk_server_callback;
415 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
419 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
420 unsigned int sid_ctx_len)
422 if (sid_ctx_len > sizeof ctx->sid_ctx) {
423 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
424 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
427 ctx->sid_ctx_length = sid_ctx_len;
428 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
433 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
434 unsigned int sid_ctx_len)
436 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
437 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
438 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
441 ssl->sid_ctx_length = sid_ctx_len;
442 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
447 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
449 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
450 ctx->generate_session_id = cb;
451 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
455 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
457 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
458 ssl->generate_session_id = cb;
459 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
463 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
467 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
468 * we can "construct" a session to give us the desired check - ie. to
469 * find if there's a session in the hash table that would conflict with
470 * any new session built out of this id/id_len and the ssl_version in use
475 if (id_len > sizeof r.session_id)
478 r.ssl_version = ssl->version;
479 r.session_id_length = id_len;
480 memcpy(r.session_id, id, id_len);
482 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
483 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
484 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
488 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
490 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
493 int SSL_set_purpose(SSL *s, int purpose)
495 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
498 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
500 return X509_VERIFY_PARAM_set_trust(s->param, trust);
503 int SSL_set_trust(SSL *s, int trust)
505 return X509_VERIFY_PARAM_set_trust(s->param, trust);
508 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
510 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
513 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
515 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
518 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
523 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
528 void SSL_certs_clear(SSL *s)
530 ssl_cert_clear_certs(s->cert);
533 void SSL_free(SSL *s)
540 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
548 fprintf(stderr, "SSL_free, bad reference count\n");
554 X509_VERIFY_PARAM_free(s->param);
556 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
558 if (s->bbio != NULL) {
559 /* If the buffering BIO is in place, pop it off */
560 if (s->bbio == s->wbio) {
561 s->wbio = BIO_pop(s->wbio);
566 BIO_free_all(s->rbio);
567 if (s->wbio != s->rbio)
568 BIO_free_all(s->wbio);
570 if (s->init_buf != NULL)
571 BUF_MEM_free(s->init_buf);
573 /* add extra stuff */
574 if (s->cipher_list != NULL)
575 sk_SSL_CIPHER_free(s->cipher_list);
576 if (s->cipher_list_by_id != NULL)
577 sk_SSL_CIPHER_free(s->cipher_list_by_id);
579 /* Make the next call work :-) */
580 if (s->session != NULL) {
581 ssl_clear_bad_session(s);
582 SSL_SESSION_free(s->session);
585 ssl_clear_cipher_ctx(s);
586 ssl_clear_hash_ctx(&s->read_hash);
587 ssl_clear_hash_ctx(&s->write_hash);
590 ssl_cert_free(s->cert);
591 /* Free up if allocated */
593 #ifndef OPENSSL_NO_TLSEXT
594 if (s->tlsext_hostname)
595 OPENSSL_free(s->tlsext_hostname);
597 SSL_CTX_free(s->initial_ctx);
598 # ifndef OPENSSL_NO_EC
599 if (s->tlsext_ecpointformatlist)
600 OPENSSL_free(s->tlsext_ecpointformatlist);
601 if (s->tlsext_ellipticcurvelist)
602 OPENSSL_free(s->tlsext_ellipticcurvelist);
603 # endif /* OPENSSL_NO_EC */
604 if (s->tlsext_ocsp_exts)
605 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
606 if (s->tlsext_ocsp_ids)
607 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
608 if (s->tlsext_ocsp_resp)
609 OPENSSL_free(s->tlsext_ocsp_resp);
610 if (s->alpn_client_proto_list)
611 OPENSSL_free(s->alpn_client_proto_list);
614 if (s->client_CA != NULL)
615 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
617 if (s->method != NULL)
618 s->method->ssl_free(s);
620 if (SSL3_BUFFER_is_initialised(RECORD_LAYER_get_rbuf(&s->rlayer)))
621 ssl3_release_read_buffer(s);
624 SSL_CTX_free(s->ctx);
626 #ifndef OPENSSL_NO_KRB5
627 if (s->kssl_ctx != NULL)
628 kssl_ctx_free(s->kssl_ctx);
629 #endif /* OPENSSL_NO_KRB5 */
631 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
632 if (s->next_proto_negotiated)
633 OPENSSL_free(s->next_proto_negotiated);
636 #ifndef OPENSSL_NO_SRTP
637 if (s->srtp_profiles)
638 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
644 void SSL_set_rbio(SSL *s, BIO *rbio)
647 BIO_free_all(s->rbio);
651 void SSL_set_wbio(SSL *s, BIO *wbio)
654 * If the output buffering BIO is still in place, remove it
656 if (s->bbio != NULL) {
657 if (s->wbio == s->bbio) {
658 s->wbio = s->wbio->next_bio;
659 s->bbio->next_bio = NULL;
662 if (s->wbio != wbio && s->rbio != s->wbio)
663 BIO_free_all(s->wbio);
667 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
669 SSL_set_wbio(s, wbio);
670 SSL_set_rbio(s, rbio);
673 BIO *SSL_get_rbio(const SSL *s)
678 BIO *SSL_get_wbio(const SSL *s)
683 int SSL_get_fd(const SSL *s)
685 return (SSL_get_rfd(s));
688 int SSL_get_rfd(const SSL *s)
694 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
700 int SSL_get_wfd(const SSL *s)
706 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
712 #ifndef OPENSSL_NO_SOCK
713 int SSL_set_fd(SSL *s, int fd)
718 bio = BIO_new(BIO_s_socket());
721 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
724 BIO_set_fd(bio, fd, BIO_NOCLOSE);
725 SSL_set_bio(s, bio, bio);
731 int SSL_set_wfd(SSL *s, int fd)
736 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
737 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
738 bio = BIO_new(BIO_s_socket());
741 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
744 BIO_set_fd(bio, fd, BIO_NOCLOSE);
745 SSL_set_bio(s, SSL_get_rbio(s), bio);
747 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
753 int SSL_set_rfd(SSL *s, int fd)
758 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
759 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
760 bio = BIO_new(BIO_s_socket());
763 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
766 BIO_set_fd(bio, fd, BIO_NOCLOSE);
767 SSL_set_bio(s, bio, SSL_get_wbio(s));
769 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
776 /* return length of latest Finished message we sent, copy to 'buf' */
777 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
782 ret = s->s3->tmp.finish_md_len;
785 memcpy(buf, s->s3->tmp.finish_md, count);
790 /* return length of latest Finished message we expected, copy to 'buf' */
791 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
796 ret = s->s3->tmp.peer_finish_md_len;
799 memcpy(buf, s->s3->tmp.peer_finish_md, count);
804 int SSL_get_verify_mode(const SSL *s)
806 return (s->verify_mode);
809 int SSL_get_verify_depth(const SSL *s)
811 return X509_VERIFY_PARAM_get_depth(s->param);
814 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
815 return (s->verify_callback);
818 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
820 return (ctx->verify_mode);
823 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
825 return X509_VERIFY_PARAM_get_depth(ctx->param);
828 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
829 return (ctx->default_verify_callback);
832 void SSL_set_verify(SSL *s, int mode,
833 int (*callback) (int ok, X509_STORE_CTX *ctx))
835 s->verify_mode = mode;
836 if (callback != NULL)
837 s->verify_callback = callback;
840 void SSL_set_verify_depth(SSL *s, int depth)
842 X509_VERIFY_PARAM_set_depth(s->param, depth);
845 void SSL_set_read_ahead(SSL *s, int yes)
847 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
850 int SSL_get_read_ahead(const SSL *s)
852 return RECORD_LAYER_get_read_ahead(&s->rlayer);
855 int SSL_pending(const SSL *s)
858 * SSL_pending cannot work properly if read-ahead is enabled
859 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
860 * impossible to fix since SSL_pending cannot report errors that may be
861 * observed while scanning the new data. (Note that SSL_pending() is
862 * often used as a boolean value, so we'd better not return -1.)
864 return (s->method->ssl_pending(s));
867 X509 *SSL_get_peer_certificate(const SSL *s)
871 if ((s == NULL) || (s->session == NULL))
874 r = s->session->peer;
879 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
884 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
888 if ((s == NULL) || (s->session == NULL)
889 || (s->session->sess_cert == NULL))
892 r = s->session->sess_cert->cert_chain;
895 * If we are a client, cert_chain includes the peer's own certificate; if
896 * we are a server, it does not.
903 * Now in theory, since the calling process own 't' it should be safe to
904 * modify. We need to be able to read f without being hassled
906 int SSL_copy_session_id(SSL *t, const SSL *f)
908 /* Do we need to to SSL locking? */
909 if(!SSL_set_session(t, SSL_get_session(f))) {
914 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
916 if (t->method != f->method) {
917 t->method->ssl_free(t); /* cleanup current */
918 t->method = f->method; /* change method */
919 t->method->ssl_new(t); /* setup new */
922 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
923 ssl_cert_free(t->cert);
925 if(!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
932 /* Fix this so it checks all the valid key/cert options */
933 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
936 (ctx->cert->key->x509 == NULL)) {
937 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
938 SSL_R_NO_CERTIFICATE_ASSIGNED);
941 if (ctx->cert->key->privatekey == NULL) {
942 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
943 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
946 return (X509_check_private_key
947 (ctx->cert->key->x509, ctx->cert->key->privatekey));
950 /* Fix this function so that it takes an optional type parameter */
951 int SSL_check_private_key(const SSL *ssl)
954 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
957 if (ssl->cert->key->x509 == NULL) {
958 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
961 if (ssl->cert->key->privatekey == NULL) {
962 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
965 return (X509_check_private_key(ssl->cert->key->x509,
966 ssl->cert->key->privatekey));
969 int SSL_accept(SSL *s)
971 if (s->handshake_func == 0)
972 /* Not properly initialized yet */
973 SSL_set_accept_state(s);
975 return (s->method->ssl_accept(s));
978 int SSL_connect(SSL *s)
980 if (s->handshake_func == 0)
981 /* Not properly initialized yet */
982 SSL_set_connect_state(s);
984 return (s->method->ssl_connect(s));
987 long SSL_get_default_timeout(const SSL *s)
989 return (s->method->get_timeout());
992 int SSL_read(SSL *s, void *buf, int num)
994 if (s->handshake_func == 0) {
995 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
999 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1000 s->rwstate = SSL_NOTHING;
1003 return (s->method->ssl_read(s, buf, num));
1006 int SSL_peek(SSL *s, void *buf, int num)
1008 if (s->handshake_func == 0) {
1009 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1013 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1016 return (s->method->ssl_peek(s, buf, num));
1019 int SSL_write(SSL *s, const void *buf, int num)
1021 if (s->handshake_func == 0) {
1022 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1026 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1027 s->rwstate = SSL_NOTHING;
1028 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1031 return (s->method->ssl_write(s, buf, num));
1034 int SSL_shutdown(SSL *s)
1037 * Note that this function behaves differently from what one might
1038 * expect. Return values are 0 for no success (yet), 1 for success; but
1039 * calling it once is usually not enough, even if blocking I/O is used
1040 * (see ssl3_shutdown).
1043 if (s->handshake_func == 0) {
1044 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1048 if ((s != NULL) && !SSL_in_init(s))
1049 return (s->method->ssl_shutdown(s));
1054 int SSL_renegotiate(SSL *s)
1056 if (s->renegotiate == 0)
1061 return (s->method->ssl_renegotiate(s));
1064 int SSL_renegotiate_abbreviated(SSL *s)
1066 if (s->renegotiate == 0)
1071 return (s->method->ssl_renegotiate(s));
1074 int SSL_renegotiate_pending(SSL *s)
1077 * becomes true when negotiation is requested; false again once a
1078 * handshake has finished
1080 return (s->renegotiate != 0);
1083 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1088 case SSL_CTRL_GET_READ_AHEAD:
1089 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1090 case SSL_CTRL_SET_READ_AHEAD:
1091 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1092 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1095 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1096 s->msg_callback_arg = parg;
1099 case SSL_CTRL_OPTIONS:
1100 return (s->options |= larg);
1101 case SSL_CTRL_CLEAR_OPTIONS:
1102 return (s->options &= ~larg);
1104 return (s->mode |= larg);
1105 case SSL_CTRL_CLEAR_MODE:
1106 return (s->mode &= ~larg);
1107 case SSL_CTRL_GET_MAX_CERT_LIST:
1108 return (s->max_cert_list);
1109 case SSL_CTRL_SET_MAX_CERT_LIST:
1110 l = s->max_cert_list;
1111 s->max_cert_list = larg;
1113 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1114 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1116 s->max_send_fragment = larg;
1118 case SSL_CTRL_GET_RI_SUPPORT:
1120 return s->s3->send_connection_binding;
1123 case SSL_CTRL_CERT_FLAGS:
1124 return (s->cert->cert_flags |= larg);
1125 case SSL_CTRL_CLEAR_CERT_FLAGS:
1126 return (s->cert->cert_flags &= ~larg);
1128 case SSL_CTRL_GET_RAW_CIPHERLIST:
1130 if (s->cert->ciphers_raw == NULL)
1132 *(unsigned char **)parg = s->cert->ciphers_raw;
1133 return (int)s->cert->ciphers_rawlen;
1135 return ssl_put_cipher_by_char(s, NULL, NULL);
1136 case SSL_CTRL_GET_EXTMS_SUPPORT:
1137 if (!s->session || SSL_in_init(s) || s->in_handshake)
1139 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1144 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1148 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1151 case SSL_CTRL_SET_MSG_CALLBACK:
1152 s->msg_callback = (void (*)
1153 (int write_p, int version, int content_type,
1154 const void *buf, size_t len, SSL *ssl,
1159 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1163 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1165 return ctx->sessions;
1168 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1171 /* For some cases with ctx == NULL perform syntax checks */
1174 #ifndef OPENSSL_NO_EC
1175 case SSL_CTRL_SET_CURVES_LIST:
1176 return tls1_set_curves_list(NULL, NULL, parg);
1178 case SSL_CTRL_SET_SIGALGS_LIST:
1179 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1180 return tls1_set_sigalgs_list(NULL, parg, 0);
1187 case SSL_CTRL_GET_READ_AHEAD:
1188 return (ctx->read_ahead);
1189 case SSL_CTRL_SET_READ_AHEAD:
1190 l = ctx->read_ahead;
1191 ctx->read_ahead = larg;
1194 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1195 ctx->msg_callback_arg = parg;
1198 case SSL_CTRL_GET_MAX_CERT_LIST:
1199 return (ctx->max_cert_list);
1200 case SSL_CTRL_SET_MAX_CERT_LIST:
1201 l = ctx->max_cert_list;
1202 ctx->max_cert_list = larg;
1205 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1206 l = ctx->session_cache_size;
1207 ctx->session_cache_size = larg;
1209 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1210 return (ctx->session_cache_size);
1211 case SSL_CTRL_SET_SESS_CACHE_MODE:
1212 l = ctx->session_cache_mode;
1213 ctx->session_cache_mode = larg;
1215 case SSL_CTRL_GET_SESS_CACHE_MODE:
1216 return (ctx->session_cache_mode);
1218 case SSL_CTRL_SESS_NUMBER:
1219 return (lh_SSL_SESSION_num_items(ctx->sessions));
1220 case SSL_CTRL_SESS_CONNECT:
1221 return (ctx->stats.sess_connect);
1222 case SSL_CTRL_SESS_CONNECT_GOOD:
1223 return (ctx->stats.sess_connect_good);
1224 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1225 return (ctx->stats.sess_connect_renegotiate);
1226 case SSL_CTRL_SESS_ACCEPT:
1227 return (ctx->stats.sess_accept);
1228 case SSL_CTRL_SESS_ACCEPT_GOOD:
1229 return (ctx->stats.sess_accept_good);
1230 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1231 return (ctx->stats.sess_accept_renegotiate);
1232 case SSL_CTRL_SESS_HIT:
1233 return (ctx->stats.sess_hit);
1234 case SSL_CTRL_SESS_CB_HIT:
1235 return (ctx->stats.sess_cb_hit);
1236 case SSL_CTRL_SESS_MISSES:
1237 return (ctx->stats.sess_miss);
1238 case SSL_CTRL_SESS_TIMEOUTS:
1239 return (ctx->stats.sess_timeout);
1240 case SSL_CTRL_SESS_CACHE_FULL:
1241 return (ctx->stats.sess_cache_full);
1242 case SSL_CTRL_OPTIONS:
1243 return (ctx->options |= larg);
1244 case SSL_CTRL_CLEAR_OPTIONS:
1245 return (ctx->options &= ~larg);
1247 return (ctx->mode |= larg);
1248 case SSL_CTRL_CLEAR_MODE:
1249 return (ctx->mode &= ~larg);
1250 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1251 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1253 ctx->max_send_fragment = larg;
1255 case SSL_CTRL_CERT_FLAGS:
1256 return (ctx->cert->cert_flags |= larg);
1257 case SSL_CTRL_CLEAR_CERT_FLAGS:
1258 return (ctx->cert->cert_flags &= ~larg);
1260 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1264 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1267 case SSL_CTRL_SET_MSG_CALLBACK:
1268 ctx->msg_callback = (void (*)
1269 (int write_p, int version, int content_type,
1270 const void *buf, size_t len, SSL *ssl,
1275 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1279 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1287 return ((l > 0) ? 1 : -1);
1290 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1291 const SSL_CIPHER *const *bp)
1295 l = (*ap)->id - (*bp)->id;
1299 return ((l > 0) ? 1 : -1);
1302 /** return a STACK of the ciphers available for the SSL and in order of
1304 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1307 if (s->cipher_list != NULL) {
1308 return (s->cipher_list);
1309 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1310 return (s->ctx->cipher_list);
1316 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1318 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1320 ciphers = SSL_get_ciphers(s);
1323 ssl_set_client_disabled(s);
1324 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1325 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1326 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1328 sk = sk_SSL_CIPHER_new_null();
1331 if (!sk_SSL_CIPHER_push(sk, c)) {
1332 sk_SSL_CIPHER_free(sk);
1340 /** return a STACK of the ciphers available for the SSL and in order of
1342 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1345 if (s->cipher_list_by_id != NULL) {
1346 return (s->cipher_list_by_id);
1347 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1348 return (s->ctx->cipher_list_by_id);
1354 /** The old interface to get the same thing as SSL_get_ciphers() */
1355 const char *SSL_get_cipher_list(const SSL *s, int n)
1358 STACK_OF(SSL_CIPHER) *sk;
1362 sk = SSL_get_ciphers(s);
1363 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1365 c = sk_SSL_CIPHER_value(sk, n);
1371 /** specify the ciphers to be used by default by the SSL_CTX */
1372 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1374 STACK_OF(SSL_CIPHER) *sk;
1376 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1377 &ctx->cipher_list_by_id, str, ctx->cert);
1379 * ssl_create_cipher_list may return an empty stack if it was unable to
1380 * find a cipher matching the given rule string (for example if the rule
1381 * string specifies a cipher which has been disabled). This is not an
1382 * error as far as ssl_create_cipher_list is concerned, and hence
1383 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1387 else if (sk_SSL_CIPHER_num(sk) == 0) {
1388 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1394 /** specify the ciphers to be used by the SSL */
1395 int SSL_set_cipher_list(SSL *s, const char *str)
1397 STACK_OF(SSL_CIPHER) *sk;
1399 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1400 &s->cipher_list_by_id, str, s->cert);
1401 /* see comment in SSL_CTX_set_cipher_list */
1404 else if (sk_SSL_CIPHER_num(sk) == 0) {
1405 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1411 /* works well for SSLv2, not so good for SSLv3 */
1412 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1415 STACK_OF(SSL_CIPHER) *sk;
1419 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1423 sk = s->session->ciphers;
1425 if (sk_SSL_CIPHER_num(sk) == 0)
1428 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1431 c = sk_SSL_CIPHER_value(sk, i);
1432 n = strlen(c->name);
1448 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1450 int (*put_cb) (const SSL_CIPHER *,
1456 int empty_reneg_info_scsv = !s->renegotiate;
1457 /* Set disabled masks for this session */
1458 ssl_set_client_disabled(s);
1464 put_cb = s->method->put_cipher_by_char;
1466 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1467 c = sk_SSL_CIPHER_value(sk, i);
1468 /* Skip disabled ciphers */
1469 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1471 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1472 if (c->id == SSL3_CK_SCSV) {
1473 if (!empty_reneg_info_scsv)
1476 empty_reneg_info_scsv = 0;
1483 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1487 if (empty_reneg_info_scsv) {
1488 static SSL_CIPHER scsv = {
1489 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1491 j = put_cb(&scsv, p);
1493 #ifdef OPENSSL_RI_DEBUG
1495 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1498 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1499 static SSL_CIPHER scsv = {
1500 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1502 j = put_cb(&scsv, p);
1510 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1512 STACK_OF(SSL_CIPHER) **skp)
1514 const SSL_CIPHER *c;
1515 STACK_OF(SSL_CIPHER) *sk;
1519 s->s3->send_connection_binding = 0;
1521 n = ssl_put_cipher_by_char(s, NULL, NULL);
1522 if (n == 0 || (num % n) != 0) {
1523 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1524 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1527 if ((skp == NULL) || (*skp == NULL))
1528 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1531 sk_SSL_CIPHER_zero(sk);
1534 if (s->cert->ciphers_raw)
1535 OPENSSL_free(s->cert->ciphers_raw);
1536 s->cert->ciphers_raw = BUF_memdup(p, num);
1537 if (s->cert->ciphers_raw == NULL) {
1538 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1541 s->cert->ciphers_rawlen = (size_t)num;
1543 for (i = 0; i < num; i += n) {
1544 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1545 if (s->s3 && (n != 3 || !p[0]) &&
1546 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1547 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1548 /* SCSV fatal if renegotiating */
1549 if (s->renegotiate) {
1550 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1551 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1552 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1555 s->s3->send_connection_binding = 1;
1557 #ifdef OPENSSL_RI_DEBUG
1558 fprintf(stderr, "SCSV received by server\n");
1563 /* Check for TLS_FALLBACK_SCSV */
1564 if ((n != 3 || !p[0]) &&
1565 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1566 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1568 * The SCSV indicates that the client previously tried a higher
1569 * version. Fail if the current version is an unexpected
1572 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1573 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1574 SSL_R_INAPPROPRIATE_FALLBACK);
1576 ssl3_send_alert(s, SSL3_AL_FATAL,
1577 SSL_AD_INAPPROPRIATE_FALLBACK);
1584 c = ssl_get_cipher_by_char(s, p);
1587 if (!sk_SSL_CIPHER_push(sk, c)) {
1588 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1598 if ((skp == NULL) || (*skp == NULL))
1599 sk_SSL_CIPHER_free(sk);
1603 #ifndef OPENSSL_NO_TLSEXT
1604 /** return a servername extension value if provided in Client Hello, or NULL.
1605 * So far, only host_name types are defined (RFC 3546).
1608 const char *SSL_get_servername(const SSL *s, const int type)
1610 if (type != TLSEXT_NAMETYPE_host_name)
1613 return s->session && !s->tlsext_hostname ?
1614 s->session->tlsext_hostname : s->tlsext_hostname;
1617 int SSL_get_servername_type(const SSL *s)
1620 && (!s->tlsext_hostname ? s->session->
1621 tlsext_hostname : s->tlsext_hostname))
1622 return TLSEXT_NAMETYPE_host_name;
1627 * SSL_select_next_proto implements the standard protocol selection. It is
1628 * expected that this function is called from the callback set by
1629 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1630 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1631 * not included in the length. A byte string of length 0 is invalid. No byte
1632 * string may be truncated. The current, but experimental algorithm for
1633 * selecting the protocol is: 1) If the server doesn't support NPN then this
1634 * is indicated to the callback. In this case, the client application has to
1635 * abort the connection or have a default application level protocol. 2) If
1636 * the server supports NPN, but advertises an empty list then the client
1637 * selects the first protcol in its list, but indicates via the API that this
1638 * fallback case was enacted. 3) Otherwise, the client finds the first
1639 * protocol in the server's list that it supports and selects this protocol.
1640 * This is because it's assumed that the server has better information about
1641 * which protocol a client should use. 4) If the client doesn't support any
1642 * of the server's advertised protocols, then this is treated the same as
1643 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1644 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1646 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1647 const unsigned char *server,
1648 unsigned int server_len,
1649 const unsigned char *client,
1650 unsigned int client_len)
1653 const unsigned char *result;
1654 int status = OPENSSL_NPN_UNSUPPORTED;
1657 * For each protocol in server preference order, see if we support it.
1659 for (i = 0; i < server_len;) {
1660 for (j = 0; j < client_len;) {
1661 if (server[i] == client[j] &&
1662 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1663 /* We found a match */
1664 result = &server[i];
1665 status = OPENSSL_NPN_NEGOTIATED;
1675 /* There's no overlap between our protocols and the server's list. */
1677 status = OPENSSL_NPN_NO_OVERLAP;
1680 *out = (unsigned char *)result + 1;
1681 *outlen = result[0];
1685 # ifndef OPENSSL_NO_NEXTPROTONEG
1687 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1688 * client's requested protocol for this connection and returns 0. If the
1689 * client didn't request any protocol, then *data is set to NULL. Note that
1690 * the client can request any protocol it chooses. The value returned from
1691 * this function need not be a member of the list of supported protocols
1692 * provided by the callback.
1694 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1697 *data = s->next_proto_negotiated;
1701 *len = s->next_proto_negotiated_len;
1706 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1707 * a TLS server needs a list of supported protocols for Next Protocol
1708 * Negotiation. The returned list must be in wire format. The list is
1709 * returned by setting |out| to point to it and |outlen| to its length. This
1710 * memory will not be modified, but one should assume that the SSL* keeps a
1711 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1712 * wishes to advertise. Otherwise, no such extension will be included in the
1715 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1716 int (*cb) (SSL *ssl,
1719 unsigned int *outlen,
1720 void *arg), void *arg)
1722 ctx->next_protos_advertised_cb = cb;
1723 ctx->next_protos_advertised_cb_arg = arg;
1727 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1728 * client needs to select a protocol from the server's provided list. |out|
1729 * must be set to point to the selected protocol (which may be within |in|).
1730 * The length of the protocol name must be written into |outlen|. The
1731 * server's advertised protocols are provided in |in| and |inlen|. The
1732 * callback can assume that |in| is syntactically valid. The client must
1733 * select a protocol. It is fatal to the connection if this callback returns
1734 * a value other than SSL_TLSEXT_ERR_OK.
1736 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1737 int (*cb) (SSL *s, unsigned char **out,
1738 unsigned char *outlen,
1739 const unsigned char *in,
1741 void *arg), void *arg)
1743 ctx->next_proto_select_cb = cb;
1744 ctx->next_proto_select_cb_arg = arg;
1749 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1750 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1751 * length-prefixed strings). Returns 0 on success.
1753 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1754 unsigned protos_len)
1756 if (ctx->alpn_client_proto_list)
1757 OPENSSL_free(ctx->alpn_client_proto_list);
1759 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1760 if (!ctx->alpn_client_proto_list)
1762 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1763 ctx->alpn_client_proto_list_len = protos_len;
1769 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1770 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1771 * length-prefixed strings). Returns 0 on success.
1773 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1774 unsigned protos_len)
1776 if (ssl->alpn_client_proto_list)
1777 OPENSSL_free(ssl->alpn_client_proto_list);
1779 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1780 if (!ssl->alpn_client_proto_list)
1782 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1783 ssl->alpn_client_proto_list_len = protos_len;
1789 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1790 * called during ClientHello processing in order to select an ALPN protocol
1791 * from the client's list of offered protocols.
1793 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1794 int (*cb) (SSL *ssl,
1795 const unsigned char **out,
1796 unsigned char *outlen,
1797 const unsigned char *in,
1799 void *arg), void *arg)
1801 ctx->alpn_select_cb = cb;
1802 ctx->alpn_select_cb_arg = arg;
1806 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1807 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1808 * (not including the leading length-prefix byte). If the server didn't
1809 * respond with a negotiated protocol then |*len| will be zero.
1811 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1816 *data = ssl->s3->alpn_selected;
1820 *len = ssl->s3->alpn_selected_len;
1823 #endif /* !OPENSSL_NO_TLSEXT */
1825 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1826 const char *label, size_t llen,
1827 const unsigned char *p, size_t plen,
1830 if (s->version < TLS1_VERSION)
1833 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1838 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1843 ((unsigned int)a->session_id[0]) |
1844 ((unsigned int)a->session_id[1] << 8L) |
1845 ((unsigned long)a->session_id[2] << 16L) |
1846 ((unsigned long)a->session_id[3] << 24L);
1851 * NB: If this function (or indeed the hash function which uses a sort of
1852 * coarser function than this one) is changed, ensure
1853 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1854 * being able to construct an SSL_SESSION that will collide with any existing
1855 * session with a matching session ID.
1857 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1859 if (a->ssl_version != b->ssl_version)
1861 if (a->session_id_length != b->session_id_length)
1863 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1867 * These wrapper functions should remain rather than redeclaring
1868 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1869 * variable. The reason is that the functions aren't static, they're exposed
1872 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1873 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1875 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1877 SSL_CTX *ret = NULL;
1880 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1884 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1885 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1889 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1890 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1893 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1897 memset(ret, 0, sizeof(SSL_CTX));
1901 ret->cert_store = NULL;
1902 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1903 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1904 ret->session_cache_head = NULL;
1905 ret->session_cache_tail = NULL;
1907 /* We take the system default */
1908 ret->session_timeout = meth->get_timeout();
1910 ret->new_session_cb = 0;
1911 ret->remove_session_cb = 0;
1912 ret->get_session_cb = 0;
1913 ret->generate_session_id = 0;
1915 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1917 ret->references = 1;
1918 ret->quiet_shutdown = 0;
1919 ret->info_callback = NULL;
1920 ret->app_verify_callback = 0;
1921 ret->app_verify_arg = NULL;
1922 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1923 ret->read_ahead = 0;
1924 ret->msg_callback = 0;
1925 ret->msg_callback_arg = NULL;
1926 ret->verify_mode = SSL_VERIFY_NONE;
1927 ret->sid_ctx_length = 0;
1928 ret->default_verify_callback = NULL;
1929 if ((ret->cert = ssl_cert_new()) == NULL)
1932 ret->default_passwd_callback = 0;
1933 ret->default_passwd_callback_userdata = NULL;
1934 ret->client_cert_cb = 0;
1935 ret->app_gen_cookie_cb = 0;
1936 ret->app_verify_cookie_cb = 0;
1938 ret->sessions = lh_SSL_SESSION_new();
1939 if (ret->sessions == NULL)
1941 ret->cert_store = X509_STORE_new();
1942 if (ret->cert_store == NULL)
1945 if(!ssl_create_cipher_list(ret->method,
1946 &ret->cipher_list, &ret->cipher_list_by_id,
1947 SSL_DEFAULT_CIPHER_LIST, ret->cert)
1948 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1949 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1953 ret->param = X509_VERIFY_PARAM_new();
1957 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1958 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1961 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1962 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1966 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1969 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1971 ret->extra_certs = NULL;
1972 /* No compression for DTLS */
1973 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1974 ret->comp_methods = SSL_COMP_get_compression_methods();
1976 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1978 #ifndef OPENSSL_NO_TLSEXT
1979 ret->tlsext_servername_callback = 0;
1980 ret->tlsext_servername_arg = NULL;
1981 /* Setup RFC4507 ticket keys */
1982 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1983 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1984 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1985 ret->options |= SSL_OP_NO_TICKET;
1987 ret->tlsext_status_cb = 0;
1988 ret->tlsext_status_arg = NULL;
1990 # ifndef OPENSSL_NO_NEXTPROTONEG
1991 ret->next_protos_advertised_cb = 0;
1992 ret->next_proto_select_cb = 0;
1995 #ifndef OPENSSL_NO_PSK
1996 ret->psk_identity_hint = NULL;
1997 ret->psk_client_callback = NULL;
1998 ret->psk_server_callback = NULL;
2000 #ifndef OPENSSL_NO_SRP
2001 if(!SSL_CTX_SRP_CTX_init(ret))
2004 #ifndef OPENSSL_NO_ENGINE
2005 ret->client_cert_engine = NULL;
2006 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2007 # define eng_strx(x) #x
2008 # define eng_str(x) eng_strx(x)
2009 /* Use specific client engine automatically... ignore errors */
2012 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2015 ENGINE_load_builtin_engines();
2016 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2018 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2024 * Default is to connect to non-RI servers. When RI is more widely
2025 * deployed might change this.
2027 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2031 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2038 void SSL_CTX_free(SSL_CTX *a)
2045 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2047 REF_PRINT("SSL_CTX", a);
2053 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
2059 X509_VERIFY_PARAM_free(a->param);
2062 * Free internal session cache. However: the remove_cb() may reference
2063 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2064 * after the sessions were flushed.
2065 * As the ex_data handling routines might also touch the session cache,
2066 * the most secure solution seems to be: empty (flush) the cache, then
2067 * free ex_data, then finally free the cache.
2068 * (See ticket [openssl.org #212].)
2070 if (a->sessions != NULL)
2071 SSL_CTX_flush_sessions(a, 0);
2073 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2075 if (a->sessions != NULL)
2076 lh_SSL_SESSION_free(a->sessions);
2078 if (a->cert_store != NULL)
2079 X509_STORE_free(a->cert_store);
2080 if (a->cipher_list != NULL)
2081 sk_SSL_CIPHER_free(a->cipher_list);
2082 if (a->cipher_list_by_id != NULL)
2083 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2084 if (a->cert != NULL)
2085 ssl_cert_free(a->cert);
2086 if (a->client_CA != NULL)
2087 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2088 if (a->extra_certs != NULL)
2089 sk_X509_pop_free(a->extra_certs, X509_free);
2090 a->comp_methods = NULL;
2092 #ifndef OPENSSL_NO_SRTP
2093 if (a->srtp_profiles)
2094 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2097 #ifndef OPENSSL_NO_PSK
2098 if (a->psk_identity_hint)
2099 OPENSSL_free(a->psk_identity_hint);
2101 #ifndef OPENSSL_NO_SRP
2102 SSL_CTX_SRP_CTX_free(a);
2104 #ifndef OPENSSL_NO_ENGINE
2105 if (a->client_cert_engine)
2106 ENGINE_finish(a->client_cert_engine);
2109 #ifndef OPENSSL_NO_TLSEXT
2110 # ifndef OPENSSL_NO_EC
2111 if (a->tlsext_ecpointformatlist)
2112 OPENSSL_free(a->tlsext_ecpointformatlist);
2113 if (a->tlsext_ellipticcurvelist)
2114 OPENSSL_free(a->tlsext_ellipticcurvelist);
2115 # endif /* OPENSSL_NO_EC */
2116 if (a->alpn_client_proto_list != NULL)
2117 OPENSSL_free(a->alpn_client_proto_list);
2123 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2125 ctx->default_passwd_callback = cb;
2128 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2130 ctx->default_passwd_callback_userdata = u;
2133 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2134 int (*cb) (X509_STORE_CTX *, void *),
2137 ctx->app_verify_callback = cb;
2138 ctx->app_verify_arg = arg;
2141 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2142 int (*cb) (int, X509_STORE_CTX *))
2144 ctx->verify_mode = mode;
2145 ctx->default_verify_callback = cb;
2148 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2150 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2153 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2156 ssl_cert_set_cert_cb(c->cert, cb, arg);
2159 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2161 ssl_cert_set_cert_cb(s->cert, cb, arg);
2164 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2167 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2168 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2169 int rsa_tmp_export, dh_tmp_export, kl;
2170 unsigned long mask_k, mask_a, emask_k, emask_a;
2171 #ifndef OPENSSL_NO_EC
2172 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2173 int have_ecdh_tmp, ecdh_ok;
2175 EVP_PKEY *ecc_pkey = NULL;
2176 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2181 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2183 #ifndef OPENSSL_NO_RSA
2184 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2185 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2186 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2188 rsa_tmp = rsa_tmp_export = 0;
2190 #ifndef OPENSSL_NO_DH
2191 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2192 dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2194 && DH_size(c->dh_tmp) * 8 <= kl));
2196 dh_tmp = dh_tmp_export = 0;
2199 #ifndef OPENSSL_NO_EC
2200 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2202 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2203 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID;
2204 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2205 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2206 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2207 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2208 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2209 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2210 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID;
2211 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2212 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2213 /* FIX THIS EAY EAY EAY */
2214 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID;
2215 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2216 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2217 #ifndef OPENSSL_NO_EC
2218 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID;
2227 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2228 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2229 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2232 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2233 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2234 mask_k |= SSL_kGOST;
2235 mask_a |= SSL_aGOST01;
2237 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2238 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2239 mask_k |= SSL_kGOST;
2240 mask_a |= SSL_aGOST94;
2243 if (rsa_enc || (rsa_tmp && rsa_sign))
2245 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2246 emask_k |= SSL_kRSA;
2249 emask_k |= SSL_kDHE;
2257 emask_k |= SSL_kDHr;
2262 emask_k |= SSL_kDHd;
2264 if (emask_k & (SSL_kDHr | SSL_kDHd))
2267 if (rsa_enc || rsa_sign) {
2269 emask_a |= SSL_aRSA;
2274 emask_a |= SSL_aDSS;
2277 mask_a |= SSL_aNULL;
2278 emask_a |= SSL_aNULL;
2280 #ifndef OPENSSL_NO_KRB5
2281 mask_k |= SSL_kKRB5;
2282 mask_a |= SSL_aKRB5;
2283 emask_k |= SSL_kKRB5;
2284 emask_a |= SSL_aKRB5;
2288 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2289 * depending on the key usage extension.
2291 #ifndef OPENSSL_NO_EC
2292 if (have_ecc_cert) {
2293 cpk = &c->pkeys[SSL_PKEY_ECC];
2295 /* This call populates extension flags (ex_flags) */
2296 X509_check_purpose(x, -1, 0);
2297 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2298 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2299 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2300 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2301 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2303 ecc_pkey = X509_get_pubkey(x);
2304 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2305 EVP_PKEY_free(ecc_pkey);
2306 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2307 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2308 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2312 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2313 mask_k |= SSL_kECDHr;
2314 mask_a |= SSL_aECDH;
2315 if (ecc_pkey_size <= 163) {
2316 emask_k |= SSL_kECDHr;
2317 emask_a |= SSL_aECDH;
2321 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2322 mask_k |= SSL_kECDHe;
2323 mask_a |= SSL_aECDH;
2324 if (ecc_pkey_size <= 163) {
2325 emask_k |= SSL_kECDHe;
2326 emask_a |= SSL_aECDH;
2331 mask_a |= SSL_aECDSA;
2332 emask_a |= SSL_aECDSA;
2337 #ifndef OPENSSL_NO_EC
2338 if (have_ecdh_tmp) {
2339 mask_k |= SSL_kECDHE;
2340 emask_k |= SSL_kECDHE;
2344 #ifndef OPENSSL_NO_PSK
2347 emask_k |= SSL_kPSK;
2348 emask_a |= SSL_aPSK;
2353 c->export_mask_k = emask_k;
2354 c->export_mask_a = emask_a;
2358 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2359 #define ku_reject(x, usage) \
2360 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2362 #ifndef OPENSSL_NO_EC
2364 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2366 unsigned long alg_k, alg_a;
2367 EVP_PKEY *pkey = NULL;
2369 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2370 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2372 alg_k = cs->algorithm_mkey;
2373 alg_a = cs->algorithm_auth;
2375 if (SSL_C_IS_EXPORT(cs)) {
2376 /* ECDH key length in export ciphers must be <= 163 bits */
2377 pkey = X509_get_pubkey(x);
2380 keysize = EVP_PKEY_bits(pkey);
2381 EVP_PKEY_free(pkey);
2386 /* This call populates the ex_flags field correctly */
2387 X509_check_purpose(x, -1, 0);
2388 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2389 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2390 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2392 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2393 /* key usage, if present, must allow key agreement */
2394 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2395 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2396 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2399 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2400 /* signature alg must be ECDSA */
2401 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2402 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2403 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2407 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2408 /* signature alg must be RSA */
2410 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2411 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2412 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2417 if (alg_a & SSL_aECDSA) {
2418 /* key usage, if present, must allow signing */
2419 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2420 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2421 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2426 return 1; /* all checks are ok */
2431 static int ssl_get_server_cert_index(const SSL *s)
2434 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2435 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2436 idx = SSL_PKEY_RSA_SIGN;
2438 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2442 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2448 if (!s->s3 || !s->s3->tmp.new_cipher)
2450 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2452 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2454 * Broken protocol test: return last used certificate: which may mismatch
2457 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2461 i = ssl_get_server_cert_index(s);
2463 /* This may or may not be an error. */
2468 return &c->pkeys[i];
2471 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2474 unsigned long alg_a;
2478 alg_a = cipher->algorithm_auth;
2481 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2483 * Broken protocol test: use last key: which may mismatch the one
2486 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2487 idx = c->key - c->pkeys;
2491 if ((alg_a & SSL_aDSS) &&
2492 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2493 idx = SSL_PKEY_DSA_SIGN;
2494 else if (alg_a & SSL_aRSA) {
2495 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2496 idx = SSL_PKEY_RSA_SIGN;
2497 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2498 idx = SSL_PKEY_RSA_ENC;
2499 } else if ((alg_a & SSL_aECDSA) &&
2500 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2503 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2507 *pmd = c->pkeys[idx].digest;
2508 return c->pkeys[idx].privatekey;
2511 #ifndef OPENSSL_NO_TLSEXT
2512 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2513 size_t *serverinfo_length)
2517 *serverinfo_length = 0;
2520 i = ssl_get_server_cert_index(s);
2524 if (c->pkeys[i].serverinfo == NULL)
2527 *serverinfo = c->pkeys[i].serverinfo;
2528 *serverinfo_length = c->pkeys[i].serverinfo_length;
2533 void ssl_update_cache(SSL *s, int mode)
2538 * If the session_id_length is 0, we are not supposed to cache it, and it
2539 * would be rather hard to do anyway :-)
2541 if (s->session->session_id_length == 0)
2544 i = s->session_ctx->session_cache_mode;
2545 if ((i & mode) && (!s->hit)
2546 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2547 || SSL_CTX_add_session(s->session_ctx, s->session))
2548 && (s->session_ctx->new_session_cb != NULL)) {
2549 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2550 if (!s->session_ctx->new_session_cb(s, s->session))
2551 SSL_SESSION_free(s->session);
2554 /* auto flush every 255 connections */
2555 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2556 if ((((mode & SSL_SESS_CACHE_CLIENT)
2557 ? s->session_ctx->stats.sess_connect_good
2558 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2559 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2564 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2569 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2574 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2579 if (s->method != meth) {
2580 if (s->handshake_func != NULL)
2581 conn = (s->handshake_func == s->method->ssl_connect);
2583 if (s->method->version == meth->version)
2586 s->method->ssl_free(s);
2588 ret = s->method->ssl_new(s);
2592 s->handshake_func = meth->ssl_connect;
2594 s->handshake_func = meth->ssl_accept;
2599 int SSL_get_error(const SSL *s, int i)
2606 return (SSL_ERROR_NONE);
2609 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2610 * where we do encode the error
2612 if ((l = ERR_peek_error()) != 0) {
2613 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2614 return (SSL_ERROR_SYSCALL);
2616 return (SSL_ERROR_SSL);
2619 if ((i < 0) && SSL_want_read(s)) {
2620 bio = SSL_get_rbio(s);
2621 if (BIO_should_read(bio))
2622 return (SSL_ERROR_WANT_READ);
2623 else if (BIO_should_write(bio))
2625 * This one doesn't make too much sense ... We never try to write
2626 * to the rbio, and an application program where rbio and wbio
2627 * are separate couldn't even know what it should wait for.
2628 * However if we ever set s->rwstate incorrectly (so that we have
2629 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2630 * wbio *are* the same, this test works around that bug; so it
2631 * might be safer to keep it.
2633 return (SSL_ERROR_WANT_WRITE);
2634 else if (BIO_should_io_special(bio)) {
2635 reason = BIO_get_retry_reason(bio);
2636 if (reason == BIO_RR_CONNECT)
2637 return (SSL_ERROR_WANT_CONNECT);
2638 else if (reason == BIO_RR_ACCEPT)
2639 return (SSL_ERROR_WANT_ACCEPT);
2641 return (SSL_ERROR_SYSCALL); /* unknown */
2645 if ((i < 0) && SSL_want_write(s)) {
2646 bio = SSL_get_wbio(s);
2647 if (BIO_should_write(bio))
2648 return (SSL_ERROR_WANT_WRITE);
2649 else if (BIO_should_read(bio))
2651 * See above (SSL_want_read(s) with BIO_should_write(bio))
2653 return (SSL_ERROR_WANT_READ);
2654 else if (BIO_should_io_special(bio)) {
2655 reason = BIO_get_retry_reason(bio);
2656 if (reason == BIO_RR_CONNECT)
2657 return (SSL_ERROR_WANT_CONNECT);
2658 else if (reason == BIO_RR_ACCEPT)
2659 return (SSL_ERROR_WANT_ACCEPT);
2661 return (SSL_ERROR_SYSCALL);
2664 if ((i < 0) && SSL_want_x509_lookup(s)) {
2665 return (SSL_ERROR_WANT_X509_LOOKUP);
2669 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2670 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2671 return (SSL_ERROR_ZERO_RETURN);
2673 return (SSL_ERROR_SYSCALL);
2676 int SSL_do_handshake(SSL *s)
2680 if (s->handshake_func == NULL) {
2681 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2685 s->method->ssl_renegotiate_check(s);
2687 if (SSL_in_init(s) || SSL_in_before(s)) {
2688 ret = s->handshake_func(s);
2694 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2695 * calls will reset it
2697 void SSL_set_accept_state(SSL *s)
2701 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2702 s->handshake_func = s->method->ssl_accept;
2703 /* clear the current cipher */
2704 ssl_clear_cipher_ctx(s);
2705 ssl_clear_hash_ctx(&s->read_hash);
2706 ssl_clear_hash_ctx(&s->write_hash);
2709 void SSL_set_connect_state(SSL *s)
2713 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2714 s->handshake_func = s->method->ssl_connect;
2715 /* clear the current cipher */
2716 ssl_clear_cipher_ctx(s);
2717 ssl_clear_hash_ctx(&s->read_hash);
2718 ssl_clear_hash_ctx(&s->write_hash);
2721 int ssl_undefined_function(SSL *s)
2723 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2727 int ssl_undefined_void_function(void)
2729 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2730 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2734 int ssl_undefined_const_function(const SSL *s)
2736 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2737 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2741 SSL_METHOD *ssl_bad_method(int ver)
2743 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2747 const char *SSL_get_version(const SSL *s)
2749 if (s->version == TLS1_2_VERSION)
2751 else if (s->version == TLS1_1_VERSION)
2753 else if (s->version == TLS1_VERSION)
2755 else if (s->version == SSL3_VERSION)
2757 else if (s->version == DTLS1_BAD_VER)
2758 return ("DTLSv0.9");
2759 else if (s->version == DTLS1_VERSION)
2761 else if (s->version == DTLS1_2_VERSION)
2762 return ("DTLSv1.2");
2767 SSL *SSL_dup(SSL *s)
2769 STACK_OF(X509_NAME) *sk;
2774 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2777 ret->version = s->version;
2778 ret->type = s->type;
2779 ret->method = s->method;
2781 if (s->session != NULL) {
2782 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2783 if(!SSL_copy_session_id(ret, s))
2787 * No session has been established yet, so we have to expect that
2788 * s->cert or ret->cert will be changed later -- they should not both
2789 * point to the same object, and thus we can't use
2790 * SSL_copy_session_id.
2793 ret->method->ssl_free(ret);
2794 ret->method = s->method;
2795 ret->method->ssl_new(ret);
2797 if (s->cert != NULL) {
2798 if (ret->cert != NULL) {
2799 ssl_cert_free(ret->cert);
2801 ret->cert = ssl_cert_dup(s->cert);
2802 if (ret->cert == NULL)
2806 if(!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
2810 ret->options = s->options;
2811 ret->mode = s->mode;
2812 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2813 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2814 ret->msg_callback = s->msg_callback;
2815 ret->msg_callback_arg = s->msg_callback_arg;
2816 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2817 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2818 ret->generate_session_id = s->generate_session_id;
2820 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2822 ret->debug = s->debug;
2824 /* copy app data, a little dangerous perhaps */
2825 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2828 /* setup rbio, and wbio */
2829 if (s->rbio != NULL) {
2830 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2833 if (s->wbio != NULL) {
2834 if (s->wbio != s->rbio) {
2835 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2838 ret->wbio = ret->rbio;
2840 ret->rwstate = s->rwstate;
2841 ret->in_handshake = s->in_handshake;
2842 ret->handshake_func = s->handshake_func;
2843 ret->server = s->server;
2844 ret->renegotiate = s->renegotiate;
2845 ret->new_session = s->new_session;
2846 ret->quiet_shutdown = s->quiet_shutdown;
2847 ret->shutdown = s->shutdown;
2848 ret->state = s->state; /* SSL_dup does not really work at any state,
2850 ret->rstate = s->rstate;
2851 ret->init_num = 0; /* would have to copy ret->init_buf,
2852 * ret->init_msg, ret->init_num,
2856 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2858 /* dup the cipher_list and cipher_list_by_id stacks */
2859 if (s->cipher_list != NULL) {
2860 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2863 if (s->cipher_list_by_id != NULL)
2864 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2868 /* Dup the client_CA list */
2869 if (s->client_CA != NULL) {
2870 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2872 ret->client_CA = sk;
2873 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2874 xn = sk_X509_NAME_value(sk, i);
2875 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2891 void ssl_clear_cipher_ctx(SSL *s)
2893 if (s->enc_read_ctx != NULL) {
2894 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2895 OPENSSL_free(s->enc_read_ctx);
2896 s->enc_read_ctx = NULL;
2898 if (s->enc_write_ctx != NULL) {
2899 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2900 OPENSSL_free(s->enc_write_ctx);
2901 s->enc_write_ctx = NULL;
2903 #ifndef OPENSSL_NO_COMP
2904 if (s->expand != NULL) {
2905 COMP_CTX_free(s->expand);
2908 if (s->compress != NULL) {
2909 COMP_CTX_free(s->compress);
2915 X509 *SSL_get_certificate(const SSL *s)
2917 if (s->cert != NULL)
2918 return (s->cert->key->x509);
2923 EVP_PKEY *SSL_get_privatekey(const SSL *s)
2925 if (s->cert != NULL)
2926 return (s->cert->key->privatekey);
2931 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2933 if (ctx->cert != NULL)
2934 return ctx->cert->key->x509;
2939 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2941 if (ctx->cert != NULL)
2942 return ctx->cert->key->privatekey;
2947 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2949 if ((s->session != NULL) && (s->session->cipher != NULL))
2950 return (s->session->cipher);
2954 #ifdef OPENSSL_NO_COMP
2955 const void *SSL_get_current_compression(SSL *s)
2960 const void *SSL_get_current_expansion(SSL *s)
2966 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2968 if (s->compress != NULL)
2969 return (s->compress->meth);
2973 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2975 if (s->expand != NULL)
2976 return (s->expand->meth);
2981 int ssl_init_wbio_buffer(SSL *s, int push)
2985 if (s->bbio == NULL) {
2986 bbio = BIO_new(BIO_f_buffer());
2992 if (s->bbio == s->wbio)
2993 s->wbio = BIO_pop(s->wbio);
2995 (void)BIO_reset(bbio);
2996 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2997 if (!BIO_set_read_buffer_size(bbio, 1)) {
2998 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3002 if (s->wbio != bbio)
3003 s->wbio = BIO_push(bbio, s->wbio);
3005 if (s->wbio == bbio)
3006 s->wbio = BIO_pop(bbio);
3011 void ssl_free_wbio_buffer(SSL *s)
3013 if (s->bbio == NULL)
3016 if (s->bbio == s->wbio) {
3017 /* remove buffering */
3018 s->wbio = BIO_pop(s->wbio);
3019 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
3020 * adding one more preprocessor symbol */
3021 assert(s->wbio != NULL);
3028 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3030 ctx->quiet_shutdown = mode;
3033 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3035 return (ctx->quiet_shutdown);
3038 void SSL_set_quiet_shutdown(SSL *s, int mode)
3040 s->quiet_shutdown = mode;
3043 int SSL_get_quiet_shutdown(const SSL *s)
3045 return (s->quiet_shutdown);
3048 void SSL_set_shutdown(SSL *s, int mode)
3053 int SSL_get_shutdown(const SSL *s)
3055 return (s->shutdown);
3058 int SSL_version(const SSL *s)
3060 return (s->version);
3063 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3068 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3071 if (ssl->ctx == ctx)
3073 #ifndef OPENSSL_NO_TLSEXT
3075 ctx = ssl->initial_ctx;
3077 new_cert = ssl_cert_dup(ctx->cert);
3078 if (new_cert == NULL) {
3081 /* Preserve any already negotiated parameters */
3083 new_cert->peer_sigalgs = ssl->cert->peer_sigalgs;
3084 new_cert->peer_sigalgslen = ssl->cert->peer_sigalgslen;
3085 ssl->cert->peer_sigalgs = NULL;
3086 new_cert->ciphers_raw = ssl->cert->ciphers_raw;
3087 new_cert->ciphers_rawlen = ssl->cert->ciphers_rawlen;
3088 ssl->cert->ciphers_raw = NULL;
3090 ssl_cert_free(ssl->cert);
3091 ssl->cert = new_cert;
3094 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3095 * so setter APIs must prevent invalid lengths from entering the system.
3097 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3100 * If the session ID context matches that of the parent SSL_CTX,
3101 * inherit it from the new SSL_CTX as well. If however the context does
3102 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3103 * leave it unchanged.
3105 if ((ssl->ctx != NULL) &&
3106 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3107 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3108 ssl->sid_ctx_length = ctx->sid_ctx_length;
3109 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3112 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3113 if (ssl->ctx != NULL)
3114 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3120 #ifndef OPENSSL_NO_STDIO
3121 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3123 return (X509_STORE_set_default_paths(ctx->cert_store));
3126 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3129 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3133 void SSL_set_info_callback(SSL *ssl,
3134 void (*cb) (const SSL *ssl, int type, int val))
3136 ssl->info_callback = cb;
3140 * One compiler (Diab DCC) doesn't like argument names in returned function
3143 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3146 return ssl->info_callback;
3149 int SSL_state(const SSL *ssl)
3151 return (ssl->state);
3154 void SSL_set_state(SSL *ssl, int state)
3159 void SSL_set_verify_result(SSL *ssl, long arg)
3161 ssl->verify_result = arg;
3164 long SSL_get_verify_result(const SSL *ssl)
3166 return (ssl->verify_result);
3169 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3170 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3172 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3173 new_func, dup_func, free_func);
3176 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3178 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3181 void *SSL_get_ex_data(const SSL *s, int idx)
3183 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3186 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3187 CRYPTO_EX_dup *dup_func,
3188 CRYPTO_EX_free *free_func)
3190 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3191 new_func, dup_func, free_func);
3194 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3196 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3199 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3201 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3209 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3211 return (ctx->cert_store);
3214 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3216 if (ctx->cert_store != NULL)
3217 X509_STORE_free(ctx->cert_store);
3218 ctx->cert_store = store;
3221 int SSL_want(const SSL *s)
3223 return (s->rwstate);
3227 * \brief Set the callback for generating temporary RSA keys.
3228 * \param ctx the SSL context.
3229 * \param cb the callback
3232 #ifndef OPENSSL_NO_RSA
3233 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3237 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3240 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3244 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3250 * \brief The RSA temporary key callback function.
3251 * \param ssl the SSL session.
3252 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3253 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3254 * of the required key in bits.
3255 * \return the temporary RSA key.
3256 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3259 RSA *cb(SSL *ssl, int is_export, int keylength)
3265 * \brief Set the callback for generating temporary DH keys.
3266 * \param ctx the SSL context.
3267 * \param dh the callback
3270 #ifndef OPENSSL_NO_DH
3271 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3272 DH *(*dh) (SSL *ssl, int is_export,
3275 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3278 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3281 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3285 #ifndef OPENSSL_NO_EC
3286 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3287 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3290 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3291 (void (*)(void))ecdh);
3294 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3295 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3298 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3302 #ifndef OPENSSL_NO_PSK
3303 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3305 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3306 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3307 SSL_R_DATA_LENGTH_TOO_LONG);
3310 if (ctx->psk_identity_hint != NULL)
3311 OPENSSL_free(ctx->psk_identity_hint);
3312 if (identity_hint != NULL) {
3313 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3314 if (ctx->psk_identity_hint == NULL)
3317 ctx->psk_identity_hint = NULL;
3321 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3326 if (s->session == NULL)
3327 return 1; /* session not created yet, ignored */
3329 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3330 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3333 if (s->session->psk_identity_hint != NULL)
3334 OPENSSL_free(s->session->psk_identity_hint);
3335 if (identity_hint != NULL) {
3336 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3337 if (s->session->psk_identity_hint == NULL)
3340 s->session->psk_identity_hint = NULL;
3344 const char *SSL_get_psk_identity_hint(const SSL *s)
3346 if (s == NULL || s->session == NULL)
3348 return (s->session->psk_identity_hint);
3351 const char *SSL_get_psk_identity(const SSL *s)
3353 if (s == NULL || s->session == NULL)
3355 return (s->session->psk_identity);
3358 void SSL_set_psk_client_callback(SSL *s,
3359 unsigned int (*cb) (SSL *ssl,
3368 s->psk_client_callback = cb;
3371 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3372 unsigned int (*cb) (SSL *ssl,
3381 ctx->psk_client_callback = cb;
3384 void SSL_set_psk_server_callback(SSL *s,
3385 unsigned int (*cb) (SSL *ssl,
3386 const char *identity,
3391 s->psk_server_callback = cb;
3394 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3395 unsigned int (*cb) (SSL *ssl,
3396 const char *identity,
3401 ctx->psk_server_callback = cb;
3405 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3406 void (*cb) (int write_p, int version,
3407 int content_type, const void *buf,
3408 size_t len, SSL *ssl, void *arg))
3410 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3413 void SSL_set_msg_callback(SSL *ssl,
3414 void (*cb) (int write_p, int version,
3415 int content_type, const void *buf,
3416 size_t len, SSL *ssl, void *arg))
3418 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3421 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3422 int (*cb) (SSL *ssl,
3426 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3427 (void (*)(void))cb);
3430 void SSL_set_not_resumable_session_callback(SSL *ssl,
3431 int (*cb) (SSL *ssl,
3432 int is_forward_secure))
3434 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3435 (void (*)(void))cb);
3439 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3440 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3441 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3445 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3447 ssl_clear_hash_ctx(hash);
3448 *hash = EVP_MD_CTX_create();
3450 EVP_DigestInit_ex(*hash, md, NULL);
3454 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3458 EVP_MD_CTX_destroy(*hash);
3462 /* Retrieve handshake hashes */
3463 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3465 unsigned char *p = out;
3470 EVP_MD_CTX_init(&ctx);
3471 for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
3472 if (mask & ssl_get_algorithm2(s)) {
3473 int hashsize = EVP_MD_size(md);
3474 EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
3475 if (!hdgst || hashsize < 0 || hashsize > outlen)
3477 if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
3479 if (!EVP_DigestFinal_ex(&ctx, p, NULL))
3487 EVP_MD_CTX_cleanup(&ctx);
3491 void SSL_set_debug(SSL *s, int debug)
3496 int SSL_cache_hit(SSL *s)
3501 int SSL_is_server(SSL *s)
3506 void SSL_set_security_level(SSL *s, int level)
3508 s->cert->sec_level = level;
3511 int SSL_get_security_level(const SSL *s)
3513 return s->cert->sec_level;
3516 void SSL_set_security_callback(SSL *s,
3517 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3518 int bits, int nid, void *other,
3521 s->cert->sec_cb = cb;
3524 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3526 void *other, void *ex) {
3527 return s->cert->sec_cb;
3530 void SSL_set0_security_ex_data(SSL *s, void *ex)
3532 s->cert->sec_ex = ex;
3535 void *SSL_get0_security_ex_data(const SSL *s)
3537 return s->cert->sec_ex;
3540 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3542 ctx->cert->sec_level = level;
3545 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3547 return ctx->cert->sec_level;
3550 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3551 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3552 int bits, int nid, void *other,
3555 ctx->cert->sec_cb = cb;
3558 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3564 return ctx->cert->sec_cb;
3567 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3569 ctx->cert->sec_ex = ex;
3572 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3574 return ctx->cert->sec_ex;
3577 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);