2 * ! \file ssl/ssl_lib.c \brief Version independent SSL functions.
4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
7 * This package is an SSL implementation written
8 * by Eric Young (eay@cryptsoft.com).
9 * The implementation was written so as to conform with Netscapes SSL.
11 * This library is free for commercial and non-commercial use as long as
12 * the following conditions are aheared to. The following conditions
13 * apply to all code found in this distribution, be it the RC4, RSA,
14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
15 * included with this distribution is covered by the same copyright terms
16 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
18 * Copyright remains Eric Young's, and as such any Copyright notices in
19 * the code are not to be removed.
20 * If this package is used in a product, Eric Young should be given attribution
21 * as the author of the parts of the library used.
22 * This can be in the form of a textual message at program startup or
23 * in documentation (online or textual) provided with the package.
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
28 * 1. Redistributions of source code must retain the copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. All advertising materials mentioning features or use of this software
34 * must display the following acknowledgement:
35 * "This product includes cryptographic software written by
36 * Eric Young (eay@cryptsoft.com)"
37 * The word 'cryptographic' can be left out if the rouines from the library
38 * being used are not cryptographic related :-).
39 * 4. If you include any Windows specific code (or a derivative thereof) from
40 * the apps directory (application code) you must include an acknowledgement:
41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * The licence and distribution terms for any publically available version or
56 * derivative of this code cannot be changed. i.e. this code cannot simply be
57 * copied and put under another distribution licence
58 * [including the GNU Public Licence.]
60 /* ====================================================================
61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
67 * 1. Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in
72 * the documentation and/or other materials provided with the
75 * 3. All advertising materials mentioning features or use of this
76 * software must display the following acknowledgment:
77 * "This product includes software developed by the OpenSSL Project
78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
81 * endorse or promote products derived from this software without
82 * prior written permission. For written permission, please contact
83 * openssl-core@openssl.org.
85 * 5. Products derived from this software may not be called "OpenSSL"
86 * nor may "OpenSSL" appear in their names without prior written
87 * permission of the OpenSSL Project.
89 * 6. Redistributions of any form whatsoever must retain the following
91 * "This product includes software developed by the OpenSSL Project
92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
105 * OF THE POSSIBILITY OF SUCH DAMAGE.
106 * ====================================================================
108 * This product includes cryptographic software written by Eric Young
109 * (eay@cryptsoft.com). This product includes software written by Tim
110 * Hudson (tjh@cryptsoft.com).
113 /* ====================================================================
114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
115 * ECC cipher suite support in OpenSSL originally developed by
116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
118 /* ====================================================================
119 * Copyright 2005 Nokia. All rights reserved.
121 * The portions of the attached software ("Contribution") is developed by
122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
127 * support (see RFC 4279) to OpenSSL.
129 * No patent licenses or other rights except those expressly stated in
130 * the OpenSSL open source license shall be deemed granted or received
131 * expressly, by implication, estoppel, or otherwise.
133 * No assurances are provided by Nokia that the Contribution does not
134 * infringe the patent or other intellectual property rights of any third
135 * party or that the license provides you with all the necessary rights
136 * to make use of the Contribution.
138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
149 #include "ssl_locl.h"
150 #include "kssl_lcl.h"
151 #include <openssl/objects.h>
152 #include <openssl/lhash.h>
153 #include <openssl/x509v3.h>
154 #include <openssl/rand.h>
155 #include <openssl/ocsp.h>
156 #ifndef OPENSSL_NO_DH
157 # include <openssl/dh.h>
159 #ifndef OPENSSL_NO_ENGINE
160 # include <openssl/engine.h>
163 const char *SSL_version_str = OPENSSL_VERSION_TEXT;
165 SSL3_ENC_METHOD ssl3_undef_enc_method = {
167 * evil casts, but these functions are only called if there's a library
170 (int (*)(SSL *, int))ssl_undefined_function,
171 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
172 ssl_undefined_function,
173 (int (*)(SSL *, unsigned char *, unsigned char *, int))
174 ssl_undefined_function,
175 (int (*)(SSL *, int))ssl_undefined_function,
176 (int (*)(SSL *, const char *, int, unsigned char *))
177 ssl_undefined_function,
178 0, /* finish_mac_length */
179 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
180 NULL, /* client_finished_label */
181 0, /* client_finished_label_len */
182 NULL, /* server_finished_label */
183 0, /* server_finished_label_len */
184 (int (*)(int))ssl_undefined_function,
185 (int (*)(SSL *, unsigned char *, size_t, const char *,
186 size_t, const unsigned char *, size_t,
187 int use_context))ssl_undefined_function,
190 int SSL_clear(SSL *s)
192 unsigned char *rp, *wp;
196 if (s->method == NULL) {
197 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
201 if (ssl_clear_bad_session(s)) {
202 SSL_SESSION_free(s->session);
210 if (s->renegotiate) {
211 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
217 s->state = SSL_ST_BEFORE | ((s->server) ? SSL_ST_ACCEPT : SSL_ST_CONNECT);
219 s->version = s->method->version;
220 s->client_version = s->version;
221 s->rwstate = SSL_NOTHING;
222 s->rstate = SSL_ST_READ_HEADER;
224 if (s->init_buf != NULL) {
225 BUF_MEM_free(s->init_buf);
229 ssl_clear_cipher_ctx(s);
230 ssl_clear_hash_ctx(&s->read_hash);
231 ssl_clear_hash_ctx(&s->write_hash);
236 * Check to see if we were changed into a different method, if so, revert
237 * back if we are not doing session-id reuse.
239 if (!s->in_handshake && (s->session == NULL)
240 && (s->method != s->ctx->method)) {
241 s->method->ssl_free(s);
242 s->method = s->ctx->method;
243 if (!s->method->ssl_new(s))
246 s->method->ssl_clear(s);
248 read_ahead = RECORD_LAYER_get_read_ahead(&s->rlayer);
249 rp = SSL3_BUFFER_get_buf(RECORD_LAYER_get_rbuf(&s->rlayer));
250 rlen = SSL3_BUFFER_get_len(RECORD_LAYER_get_rbuf(&s->rlayer));
251 wp = SSL3_BUFFER_get_buf(RECORD_LAYER_get_wbuf(&s->rlayer));
252 wlen = SSL3_BUFFER_get_len(RECORD_LAYER_get_wbuf(&s->rlayer));
253 memset(&s->rlayer, 0, sizeof s->rlayer);
254 SSL3_BUFFER_set_buf(RECORD_LAYER_get_rbuf(&s->rlayer), rp);
255 SSL3_BUFFER_set_len(RECORD_LAYER_get_rbuf(&s->rlayer), rlen);
256 SSL3_BUFFER_set_buf(RECORD_LAYER_get_wbuf(&s->rlayer), wp);
257 SSL3_BUFFER_set_len(RECORD_LAYER_get_wbuf(&s->rlayer), wlen);
259 /* Do I need to do this? As far as I can tell read_ahead did not
260 * previously get reset by SSL_clear...so I'll keep it that way..but is
263 RECORD_LAYER_set_read_ahead(&s->rlayer, read_ahead);
264 RECORD_LAYER_set_ssl(&s->rlayer, s);
269 /** Used to change an SSL_CTXs default SSL method type */
270 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
272 STACK_OF(SSL_CIPHER) *sk;
276 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
277 &(ctx->cipher_list_by_id),
278 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
279 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
280 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,
281 SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
287 SSL *SSL_new(SSL_CTX *ctx)
292 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
295 if (ctx->method == NULL) {
296 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
300 s = (SSL *)OPENSSL_malloc(sizeof(SSL));
303 memset(s, 0, sizeof(SSL));
305 RECORD_LAYER_set_ssl(&s->rlayer, s);
307 #ifndef OPENSSL_NO_KRB5
308 s->kssl_ctx = kssl_ctx_new();
309 #endif /* OPENSSL_NO_KRB5 */
311 s->options = ctx->options;
313 s->max_cert_list = ctx->max_cert_list;
316 * Earlier library versions used to copy the pointer to the CERT, not
317 * its contents; only when setting new parameters for the per-SSL
318 * copy, ssl_cert_new would be called (and the direct reference to
319 * the per-SSL_CTX settings would be lost, but those still were
320 * indirectly accessed for various purposes, and for that reason they
321 * used to be known as s->ctx->default_cert). Now we don't look at the
322 * SSL_CTX's CERT after having duplicated it once.
324 s->cert = ssl_cert_dup(ctx->cert);
328 RECORD_LAYER_set_read_ahead(&s->rlayer, 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;
332 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
333 s->sid_ctx_length = ctx->sid_ctx_length;
334 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
335 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
336 s->verify_callback = ctx->default_verify_callback;
337 s->generate_session_id = ctx->generate_session_id;
339 s->param = X509_VERIFY_PARAM_new();
342 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
343 s->quiet_shutdown = ctx->quiet_shutdown;
344 s->max_send_fragment = ctx->max_send_fragment;
346 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
348 #ifndef OPENSSL_NO_TLSEXT
349 s->tlsext_debug_cb = 0;
350 s->tlsext_debug_arg = NULL;
351 s->tlsext_ticket_expected = 0;
352 s->tlsext_status_type = -1;
353 s->tlsext_status_expected = 0;
354 s->tlsext_ocsp_ids = NULL;
355 s->tlsext_ocsp_exts = NULL;
356 s->tlsext_ocsp_resp = NULL;
357 s->tlsext_ocsp_resplen = -1;
358 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
359 s->initial_ctx = ctx;
360 # ifndef OPENSSL_NO_EC
361 if (ctx->tlsext_ecpointformatlist) {
362 s->tlsext_ecpointformatlist =
363 BUF_memdup(ctx->tlsext_ecpointformatlist,
364 ctx->tlsext_ecpointformatlist_length);
365 if (!s->tlsext_ecpointformatlist)
367 s->tlsext_ecpointformatlist_length =
368 ctx->tlsext_ecpointformatlist_length;
370 if (ctx->tlsext_ellipticcurvelist) {
371 s->tlsext_ellipticcurvelist =
372 BUF_memdup(ctx->tlsext_ellipticcurvelist,
373 ctx->tlsext_ellipticcurvelist_length);
374 if (!s->tlsext_ellipticcurvelist)
376 s->tlsext_ellipticcurvelist_length =
377 ctx->tlsext_ellipticcurvelist_length;
380 # ifndef OPENSSL_NO_NEXTPROTONEG
381 s->next_proto_negotiated = NULL;
384 if (s->ctx->alpn_client_proto_list) {
385 s->alpn_client_proto_list =
386 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
387 if (s->alpn_client_proto_list == NULL)
389 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
390 s->ctx->alpn_client_proto_list_len);
391 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
395 s->verify_result = X509_V_OK;
397 s->method = ctx->method;
399 if (!s->method->ssl_new(s))
403 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
408 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
410 #ifndef OPENSSL_NO_PSK
411 s->psk_client_callback = ctx->psk_client_callback;
412 s->psk_server_callback = ctx->psk_server_callback;
419 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
423 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
424 unsigned int sid_ctx_len)
426 if (sid_ctx_len > sizeof ctx->sid_ctx) {
427 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
428 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
431 ctx->sid_ctx_length = sid_ctx_len;
432 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
437 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
438 unsigned int sid_ctx_len)
440 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
441 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
442 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
445 ssl->sid_ctx_length = sid_ctx_len;
446 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
451 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
453 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
454 ctx->generate_session_id = cb;
455 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
459 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
461 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
462 ssl->generate_session_id = cb;
463 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
467 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
471 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
472 * we can "construct" a session to give us the desired check - ie. to
473 * find if there's a session in the hash table that would conflict with
474 * any new session built out of this id/id_len and the ssl_version in use
479 if (id_len > sizeof r.session_id)
482 r.ssl_version = ssl->version;
483 r.session_id_length = id_len;
484 memcpy(r.session_id, id, id_len);
486 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
487 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
488 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
492 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
494 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
497 int SSL_set_purpose(SSL *s, int purpose)
499 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
502 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
504 return X509_VERIFY_PARAM_set_trust(s->param, trust);
507 int SSL_set_trust(SSL *s, int trust)
509 return X509_VERIFY_PARAM_set_trust(s->param, trust);
512 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
514 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
517 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
519 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
522 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
527 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
532 void SSL_certs_clear(SSL *s)
534 ssl_cert_clear_certs(s->cert);
537 void SSL_free(SSL *s)
544 i = CRYPTO_add(&s->references, -1, CRYPTO_LOCK_SSL);
552 fprintf(stderr, "SSL_free, bad reference count\n");
558 X509_VERIFY_PARAM_free(s->param);
560 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
562 if (s->bbio != NULL) {
563 /* If the buffering BIO is in place, pop it off */
564 if (s->bbio == s->wbio) {
565 s->wbio = BIO_pop(s->wbio);
570 BIO_free_all(s->rbio);
571 if (s->wbio != s->rbio)
572 BIO_free_all(s->wbio);
574 if (s->init_buf != NULL)
575 BUF_MEM_free(s->init_buf);
577 /* add extra stuff */
578 if (s->cipher_list != NULL)
579 sk_SSL_CIPHER_free(s->cipher_list);
580 if (s->cipher_list_by_id != NULL)
581 sk_SSL_CIPHER_free(s->cipher_list_by_id);
583 /* Make the next call work :-) */
584 if (s->session != NULL) {
585 ssl_clear_bad_session(s);
586 SSL_SESSION_free(s->session);
589 ssl_clear_cipher_ctx(s);
590 ssl_clear_hash_ctx(&s->read_hash);
591 ssl_clear_hash_ctx(&s->write_hash);
594 ssl_cert_free(s->cert);
595 /* Free up if allocated */
597 #ifndef OPENSSL_NO_TLSEXT
598 if (s->tlsext_hostname)
599 OPENSSL_free(s->tlsext_hostname);
601 SSL_CTX_free(s->initial_ctx);
602 # ifndef OPENSSL_NO_EC
603 if (s->tlsext_ecpointformatlist)
604 OPENSSL_free(s->tlsext_ecpointformatlist);
605 if (s->tlsext_ellipticcurvelist)
606 OPENSSL_free(s->tlsext_ellipticcurvelist);
607 # endif /* OPENSSL_NO_EC */
608 if (s->tlsext_ocsp_exts)
609 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts, X509_EXTENSION_free);
610 if (s->tlsext_ocsp_ids)
611 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
612 if (s->tlsext_ocsp_resp)
613 OPENSSL_free(s->tlsext_ocsp_resp);
614 if (s->alpn_client_proto_list)
615 OPENSSL_free(s->alpn_client_proto_list);
618 if (s->client_CA != NULL)
619 sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);
621 if (s->method != NULL)
622 s->method->ssl_free(s);
624 if (SSL3_BUFFER_is_initialised(RECORD_LAYER_get_rbuf(&s->rlayer)))
625 ssl3_release_read_buffer(s);
626 if (SSL3_BUFFER_is_initialised(RECORD_LAYER_get_wbuf(&s->rlayer)))
627 ssl3_release_write_buffer(s);
630 SSL_CTX_free(s->ctx);
632 #ifndef OPENSSL_NO_KRB5
633 if (s->kssl_ctx != NULL)
634 kssl_ctx_free(s->kssl_ctx);
635 #endif /* OPENSSL_NO_KRB5 */
637 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
638 if (s->next_proto_negotiated)
639 OPENSSL_free(s->next_proto_negotiated);
642 #ifndef OPENSSL_NO_SRTP
643 if (s->srtp_profiles)
644 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
650 void SSL_set_rbio(SSL *s, BIO *rbio)
653 BIO_free_all(s->rbio);
657 void SSL_set_wbio(SSL *s, BIO *wbio)
660 * If the output buffering BIO is still in place, remove it
662 if (s->bbio != NULL) {
663 if (s->wbio == s->bbio) {
664 s->wbio = s->wbio->next_bio;
665 s->bbio->next_bio = NULL;
668 if (s->wbio != wbio && s->rbio != s->wbio)
669 BIO_free_all(s->wbio);
673 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
675 SSL_set_wbio(s, wbio);
676 SSL_set_rbio(s, rbio);
679 BIO *SSL_get_rbio(const SSL *s)
684 BIO *SSL_get_wbio(const SSL *s)
689 int SSL_get_fd(const SSL *s)
691 return (SSL_get_rfd(s));
694 int SSL_get_rfd(const SSL *s)
700 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
706 int SSL_get_wfd(const SSL *s)
712 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
718 #ifndef OPENSSL_NO_SOCK
719 int SSL_set_fd(SSL *s, int fd)
724 bio = BIO_new(BIO_s_socket());
727 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
730 BIO_set_fd(bio, fd, BIO_NOCLOSE);
731 SSL_set_bio(s, bio, bio);
737 int SSL_set_wfd(SSL *s, int fd)
742 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
743 || ((int)BIO_get_fd(s->rbio, NULL) != fd)) {
744 bio = BIO_new(BIO_s_socket());
747 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
750 BIO_set_fd(bio, fd, BIO_NOCLOSE);
751 SSL_set_bio(s, SSL_get_rbio(s), bio);
753 SSL_set_bio(s, SSL_get_rbio(s), SSL_get_rbio(s));
759 int SSL_set_rfd(SSL *s, int fd)
764 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
765 || ((int)BIO_get_fd(s->wbio, NULL) != fd)) {
766 bio = BIO_new(BIO_s_socket());
769 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
772 BIO_set_fd(bio, fd, BIO_NOCLOSE);
773 SSL_set_bio(s, bio, SSL_get_wbio(s));
775 SSL_set_bio(s, SSL_get_wbio(s), SSL_get_wbio(s));
782 /* return length of latest Finished message we sent, copy to 'buf' */
783 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
788 ret = s->s3->tmp.finish_md_len;
791 memcpy(buf, s->s3->tmp.finish_md, count);
796 /* return length of latest Finished message we expected, copy to 'buf' */
797 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
802 ret = s->s3->tmp.peer_finish_md_len;
805 memcpy(buf, s->s3->tmp.peer_finish_md, count);
810 int SSL_get_verify_mode(const SSL *s)
812 return (s->verify_mode);
815 int SSL_get_verify_depth(const SSL *s)
817 return X509_VERIFY_PARAM_get_depth(s->param);
820 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
821 return (s->verify_callback);
824 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
826 return (ctx->verify_mode);
829 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
831 return X509_VERIFY_PARAM_get_depth(ctx->param);
834 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
835 return (ctx->default_verify_callback);
838 void SSL_set_verify(SSL *s, int mode,
839 int (*callback) (int ok, X509_STORE_CTX *ctx))
841 s->verify_mode = mode;
842 if (callback != NULL)
843 s->verify_callback = callback;
846 void SSL_set_verify_depth(SSL *s, int depth)
848 X509_VERIFY_PARAM_set_depth(s->param, depth);
851 void SSL_set_read_ahead(SSL *s, int yes)
853 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
856 int SSL_get_read_ahead(const SSL *s)
858 return RECORD_LAYER_get_read_ahead(&s->rlayer);
861 int SSL_pending(const SSL *s)
864 * SSL_pending cannot work properly if read-ahead is enabled
865 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
866 * impossible to fix since SSL_pending cannot report errors that may be
867 * observed while scanning the new data. (Note that SSL_pending() is
868 * often used as a boolean value, so we'd better not return -1.)
870 return (s->method->ssl_pending(s));
873 X509 *SSL_get_peer_certificate(const SSL *s)
877 if ((s == NULL) || (s->session == NULL))
880 r = s->session->peer;
885 CRYPTO_add(&r->references, 1, CRYPTO_LOCK_X509);
890 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
894 if ((s == NULL) || (s->session == NULL)
895 || (s->session->sess_cert == NULL))
898 r = s->session->sess_cert->cert_chain;
901 * If we are a client, cert_chain includes the peer's own certificate; if
902 * we are a server, it does not.
909 * Now in theory, since the calling process own 't' it should be safe to
910 * modify. We need to be able to read f without being hassled
912 int SSL_copy_session_id(SSL *t, const SSL *f)
914 /* Do we need to to SSL locking? */
915 if(!SSL_set_session(t, SSL_get_session(f))) {
920 * what if we are setup as SSLv2 but want to talk SSLv3 or vice-versa
922 if (t->method != f->method) {
923 t->method->ssl_free(t); /* cleanup current */
924 t->method = f->method; /* change method */
925 t->method->ssl_new(t); /* setup new */
928 CRYPTO_add(&f->cert->references, 1, CRYPTO_LOCK_SSL_CERT);
929 ssl_cert_free(t->cert);
931 if(!SSL_set_session_id_context(t, f->sid_ctx, f->sid_ctx_length)) {
938 /* Fix this so it checks all the valid key/cert options */
939 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
942 (ctx->cert->key->x509 == NULL)) {
943 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
944 SSL_R_NO_CERTIFICATE_ASSIGNED);
947 if (ctx->cert->key->privatekey == NULL) {
948 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,
949 SSL_R_NO_PRIVATE_KEY_ASSIGNED);
952 return (X509_check_private_key
953 (ctx->cert->key->x509, ctx->cert->key->privatekey));
956 /* Fix this function so that it takes an optional type parameter */
957 int SSL_check_private_key(const SSL *ssl)
960 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
963 if (ssl->cert->key->x509 == NULL) {
964 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
967 if (ssl->cert->key->privatekey == NULL) {
968 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
971 return (X509_check_private_key(ssl->cert->key->x509,
972 ssl->cert->key->privatekey));
975 int SSL_accept(SSL *s)
977 if (s->handshake_func == 0)
978 /* Not properly initialized yet */
979 SSL_set_accept_state(s);
981 return (s->method->ssl_accept(s));
984 int SSL_connect(SSL *s)
986 if (s->handshake_func == 0)
987 /* Not properly initialized yet */
988 SSL_set_connect_state(s);
990 return (s->method->ssl_connect(s));
993 long SSL_get_default_timeout(const SSL *s)
995 return (s->method->get_timeout());
998 int SSL_read(SSL *s, void *buf, int num)
1000 if (s->handshake_func == 0) {
1001 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1005 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1006 s->rwstate = SSL_NOTHING;
1009 return (s->method->ssl_read(s, buf, num));
1012 int SSL_peek(SSL *s, void *buf, int num)
1014 if (s->handshake_func == 0) {
1015 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1019 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1022 return (s->method->ssl_peek(s, buf, num));
1025 int SSL_write(SSL *s, const void *buf, int num)
1027 if (s->handshake_func == 0) {
1028 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1032 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1033 s->rwstate = SSL_NOTHING;
1034 SSLerr(SSL_F_SSL_WRITE, SSL_R_PROTOCOL_IS_SHUTDOWN);
1037 return (s->method->ssl_write(s, buf, num));
1040 int SSL_shutdown(SSL *s)
1043 * Note that this function behaves differently from what one might
1044 * expect. Return values are 0 for no success (yet), 1 for success; but
1045 * calling it once is usually not enough, even if blocking I/O is used
1046 * (see ssl3_shutdown).
1049 if (s->handshake_func == 0) {
1050 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1054 if ((s != NULL) && !SSL_in_init(s))
1055 return (s->method->ssl_shutdown(s));
1060 int SSL_renegotiate(SSL *s)
1062 if (s->renegotiate == 0)
1067 return (s->method->ssl_renegotiate(s));
1070 int SSL_renegotiate_abbreviated(SSL *s)
1072 if (s->renegotiate == 0)
1077 return (s->method->ssl_renegotiate(s));
1080 int SSL_renegotiate_pending(SSL *s)
1083 * becomes true when negotiation is requested; false again once a
1084 * handshake has finished
1086 return (s->renegotiate != 0);
1089 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
1094 case SSL_CTRL_GET_READ_AHEAD:
1095 return (RECORD_LAYER_get_read_ahead(&s->rlayer));
1096 case SSL_CTRL_SET_READ_AHEAD:
1097 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
1098 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
1101 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1102 s->msg_callback_arg = parg;
1105 case SSL_CTRL_OPTIONS:
1106 return (s->options |= larg);
1107 case SSL_CTRL_CLEAR_OPTIONS:
1108 return (s->options &= ~larg);
1110 return (s->mode |= larg);
1111 case SSL_CTRL_CLEAR_MODE:
1112 return (s->mode &= ~larg);
1113 case SSL_CTRL_GET_MAX_CERT_LIST:
1114 return (s->max_cert_list);
1115 case SSL_CTRL_SET_MAX_CERT_LIST:
1116 l = s->max_cert_list;
1117 s->max_cert_list = larg;
1119 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1120 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1122 s->max_send_fragment = larg;
1124 case SSL_CTRL_GET_RI_SUPPORT:
1126 return s->s3->send_connection_binding;
1129 case SSL_CTRL_CERT_FLAGS:
1130 return (s->cert->cert_flags |= larg);
1131 case SSL_CTRL_CLEAR_CERT_FLAGS:
1132 return (s->cert->cert_flags &= ~larg);
1134 case SSL_CTRL_GET_RAW_CIPHERLIST:
1136 if (s->cert->ciphers_raw == NULL)
1138 *(unsigned char **)parg = s->cert->ciphers_raw;
1139 return (int)s->cert->ciphers_rawlen;
1141 return ssl_put_cipher_by_char(s, NULL, NULL);
1142 case SSL_CTRL_GET_EXTMS_SUPPORT:
1143 if (!s->session || SSL_in_init(s) || s->in_handshake)
1145 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
1150 return (s->method->ssl_ctrl(s, cmd, larg, parg));
1154 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
1157 case SSL_CTRL_SET_MSG_CALLBACK:
1158 s->msg_callback = (void (*)
1159 (int write_p, int version, int content_type,
1160 const void *buf, size_t len, SSL *ssl,
1165 return (s->method->ssl_callback_ctrl(s, cmd, fp));
1169 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1171 return ctx->sessions;
1174 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
1177 /* For some cases with ctx == NULL perform syntax checks */
1180 #ifndef OPENSSL_NO_EC
1181 case SSL_CTRL_SET_CURVES_LIST:
1182 return tls1_set_curves_list(NULL, NULL, parg);
1184 case SSL_CTRL_SET_SIGALGS_LIST:
1185 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1186 return tls1_set_sigalgs_list(NULL, parg, 0);
1193 case SSL_CTRL_GET_READ_AHEAD:
1194 return (ctx->read_ahead);
1195 case SSL_CTRL_SET_READ_AHEAD:
1196 l = ctx->read_ahead;
1197 ctx->read_ahead = larg;
1200 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1201 ctx->msg_callback_arg = parg;
1204 case SSL_CTRL_GET_MAX_CERT_LIST:
1205 return (ctx->max_cert_list);
1206 case SSL_CTRL_SET_MAX_CERT_LIST:
1207 l = ctx->max_cert_list;
1208 ctx->max_cert_list = larg;
1211 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1212 l = ctx->session_cache_size;
1213 ctx->session_cache_size = larg;
1215 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1216 return (ctx->session_cache_size);
1217 case SSL_CTRL_SET_SESS_CACHE_MODE:
1218 l = ctx->session_cache_mode;
1219 ctx->session_cache_mode = larg;
1221 case SSL_CTRL_GET_SESS_CACHE_MODE:
1222 return (ctx->session_cache_mode);
1224 case SSL_CTRL_SESS_NUMBER:
1225 return (lh_SSL_SESSION_num_items(ctx->sessions));
1226 case SSL_CTRL_SESS_CONNECT:
1227 return (ctx->stats.sess_connect);
1228 case SSL_CTRL_SESS_CONNECT_GOOD:
1229 return (ctx->stats.sess_connect_good);
1230 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1231 return (ctx->stats.sess_connect_renegotiate);
1232 case SSL_CTRL_SESS_ACCEPT:
1233 return (ctx->stats.sess_accept);
1234 case SSL_CTRL_SESS_ACCEPT_GOOD:
1235 return (ctx->stats.sess_accept_good);
1236 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1237 return (ctx->stats.sess_accept_renegotiate);
1238 case SSL_CTRL_SESS_HIT:
1239 return (ctx->stats.sess_hit);
1240 case SSL_CTRL_SESS_CB_HIT:
1241 return (ctx->stats.sess_cb_hit);
1242 case SSL_CTRL_SESS_MISSES:
1243 return (ctx->stats.sess_miss);
1244 case SSL_CTRL_SESS_TIMEOUTS:
1245 return (ctx->stats.sess_timeout);
1246 case SSL_CTRL_SESS_CACHE_FULL:
1247 return (ctx->stats.sess_cache_full);
1248 case SSL_CTRL_OPTIONS:
1249 return (ctx->options |= larg);
1250 case SSL_CTRL_CLEAR_OPTIONS:
1251 return (ctx->options &= ~larg);
1253 return (ctx->mode |= larg);
1254 case SSL_CTRL_CLEAR_MODE:
1255 return (ctx->mode &= ~larg);
1256 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1257 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1259 ctx->max_send_fragment = larg;
1261 case SSL_CTRL_CERT_FLAGS:
1262 return (ctx->cert->cert_flags |= larg);
1263 case SSL_CTRL_CLEAR_CERT_FLAGS:
1264 return (ctx->cert->cert_flags &= ~larg);
1266 return (ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg));
1270 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
1273 case SSL_CTRL_SET_MSG_CALLBACK:
1274 ctx->msg_callback = (void (*)
1275 (int write_p, int version, int content_type,
1276 const void *buf, size_t len, SSL *ssl,
1281 return (ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp));
1285 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1293 return ((l > 0) ? 1 : -1);
1296 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
1297 const SSL_CIPHER *const *bp)
1301 l = (*ap)->id - (*bp)->id;
1305 return ((l > 0) ? 1 : -1);
1308 /** return a STACK of the ciphers available for the SSL and in order of
1310 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1313 if (s->cipher_list != NULL) {
1314 return (s->cipher_list);
1315 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
1316 return (s->ctx->cipher_list);
1322 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1324 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1326 ciphers = SSL_get_ciphers(s);
1329 ssl_set_client_disabled(s);
1330 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
1331 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1332 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED)) {
1334 sk = sk_SSL_CIPHER_new_null();
1337 if (!sk_SSL_CIPHER_push(sk, c)) {
1338 sk_SSL_CIPHER_free(sk);
1346 /** return a STACK of the ciphers available for the SSL and in order of
1348 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1351 if (s->cipher_list_by_id != NULL) {
1352 return (s->cipher_list_by_id);
1353 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
1354 return (s->ctx->cipher_list_by_id);
1360 /** The old interface to get the same thing as SSL_get_ciphers() */
1361 const char *SSL_get_cipher_list(const SSL *s, int n)
1364 STACK_OF(SSL_CIPHER) *sk;
1368 sk = SSL_get_ciphers(s);
1369 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1371 c = sk_SSL_CIPHER_value(sk, n);
1377 /** specify the ciphers to be used by default by the SSL_CTX */
1378 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1380 STACK_OF(SSL_CIPHER) *sk;
1382 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
1383 &ctx->cipher_list_by_id, str, ctx->cert);
1385 * ssl_create_cipher_list may return an empty stack if it was unable to
1386 * find a cipher matching the given rule string (for example if the rule
1387 * string specifies a cipher which has been disabled). This is not an
1388 * error as far as ssl_create_cipher_list is concerned, and hence
1389 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
1393 else if (sk_SSL_CIPHER_num(sk) == 0) {
1394 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1400 /** specify the ciphers to be used by the SSL */
1401 int SSL_set_cipher_list(SSL *s, const char *str)
1403 STACK_OF(SSL_CIPHER) *sk;
1405 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
1406 &s->cipher_list_by_id, str, s->cert);
1407 /* see comment in SSL_CTX_set_cipher_list */
1410 else if (sk_SSL_CIPHER_num(sk) == 0) {
1411 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1417 /* works well for SSLv2, not so good for SSLv3 */
1418 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
1421 STACK_OF(SSL_CIPHER) *sk;
1425 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
1429 sk = s->session->ciphers;
1431 if (sk_SSL_CIPHER_num(sk) == 0)
1434 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1437 c = sk_SSL_CIPHER_value(sk, i);
1438 n = strlen(c->name);
1454 int ssl_cipher_list_to_bytes(SSL *s, STACK_OF(SSL_CIPHER) *sk,
1456 int (*put_cb) (const SSL_CIPHER *,
1462 int empty_reneg_info_scsv = !s->renegotiate;
1463 /* Set disabled masks for this session */
1464 ssl_set_client_disabled(s);
1470 put_cb = s->method->put_cipher_by_char;
1472 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
1473 c = sk_SSL_CIPHER_value(sk, i);
1474 /* Skip disabled ciphers */
1475 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1477 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1478 if (c->id == SSL3_CK_SCSV) {
1479 if (!empty_reneg_info_scsv)
1482 empty_reneg_info_scsv = 0;
1489 * If p == q, no ciphers; caller indicates an error. Otherwise, add
1493 if (empty_reneg_info_scsv) {
1494 static SSL_CIPHER scsv = {
1495 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1497 j = put_cb(&scsv, p);
1499 #ifdef OPENSSL_RI_DEBUG
1501 "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1504 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV) {
1505 static SSL_CIPHER scsv = {
1506 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1508 j = put_cb(&scsv, p);
1516 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s, unsigned char *p,
1518 STACK_OF(SSL_CIPHER) **skp)
1520 const SSL_CIPHER *c;
1521 STACK_OF(SSL_CIPHER) *sk;
1525 s->s3->send_connection_binding = 0;
1527 n = ssl_put_cipher_by_char(s, NULL, NULL);
1528 if (n == 0 || (num % n) != 0) {
1529 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1530 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1533 if ((skp == NULL) || (*skp == NULL))
1534 sk = sk_SSL_CIPHER_new_null(); /* change perhaps later */
1537 sk_SSL_CIPHER_zero(sk);
1540 if (s->cert->ciphers_raw)
1541 OPENSSL_free(s->cert->ciphers_raw);
1542 s->cert->ciphers_raw = BUF_memdup(p, num);
1543 if (s->cert->ciphers_raw == NULL) {
1544 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1547 s->cert->ciphers_rawlen = (size_t)num;
1549 for (i = 0; i < num; i += n) {
1550 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1551 if (s->s3 && (n != 3 || !p[0]) &&
1552 (p[n - 2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1553 (p[n - 1] == (SSL3_CK_SCSV & 0xff))) {
1554 /* SCSV fatal if renegotiating */
1555 if (s->renegotiate) {
1556 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1557 SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1558 ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
1561 s->s3->send_connection_binding = 1;
1563 #ifdef OPENSSL_RI_DEBUG
1564 fprintf(stderr, "SCSV received by server\n");
1569 /* Check for TLS_FALLBACK_SCSV */
1570 if ((n != 3 || !p[0]) &&
1571 (p[n - 2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1572 (p[n - 1] == (SSL3_CK_FALLBACK_SCSV & 0xff))) {
1574 * The SCSV indicates that the client previously tried a higher
1575 * version. Fail if the current version is an unexpected
1578 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL)) {
1579 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,
1580 SSL_R_INAPPROPRIATE_FALLBACK);
1582 ssl3_send_alert(s, SSL3_AL_FATAL,
1583 SSL_AD_INAPPROPRIATE_FALLBACK);
1590 c = ssl_get_cipher_by_char(s, p);
1593 if (!sk_SSL_CIPHER_push(sk, c)) {
1594 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
1604 if ((skp == NULL) || (*skp == NULL))
1605 sk_SSL_CIPHER_free(sk);
1609 #ifndef OPENSSL_NO_TLSEXT
1610 /** return a servername extension value if provided in Client Hello, or NULL.
1611 * So far, only host_name types are defined (RFC 3546).
1614 const char *SSL_get_servername(const SSL *s, const int type)
1616 if (type != TLSEXT_NAMETYPE_host_name)
1619 return s->session && !s->tlsext_hostname ?
1620 s->session->tlsext_hostname : s->tlsext_hostname;
1623 int SSL_get_servername_type(const SSL *s)
1626 && (!s->tlsext_hostname ? s->session->
1627 tlsext_hostname : s->tlsext_hostname))
1628 return TLSEXT_NAMETYPE_host_name;
1633 * SSL_select_next_proto implements the standard protocol selection. It is
1634 * expected that this function is called from the callback set by
1635 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
1636 * vector of 8-bit, length prefixed byte strings. The length byte itself is
1637 * not included in the length. A byte string of length 0 is invalid. No byte
1638 * string may be truncated. The current, but experimental algorithm for
1639 * selecting the protocol is: 1) If the server doesn't support NPN then this
1640 * is indicated to the callback. In this case, the client application has to
1641 * abort the connection or have a default application level protocol. 2) If
1642 * the server supports NPN, but advertises an empty list then the client
1643 * selects the first protcol in its list, but indicates via the API that this
1644 * fallback case was enacted. 3) Otherwise, the client finds the first
1645 * protocol in the server's list that it supports and selects this protocol.
1646 * This is because it's assumed that the server has better information about
1647 * which protocol a client should use. 4) If the client doesn't support any
1648 * of the server's advertised protocols, then this is treated the same as
1649 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
1650 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1652 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
1653 const unsigned char *server,
1654 unsigned int server_len,
1655 const unsigned char *client,
1656 unsigned int client_len)
1659 const unsigned char *result;
1660 int status = OPENSSL_NPN_UNSUPPORTED;
1663 * For each protocol in server preference order, see if we support it.
1665 for (i = 0; i < server_len;) {
1666 for (j = 0; j < client_len;) {
1667 if (server[i] == client[j] &&
1668 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
1669 /* We found a match */
1670 result = &server[i];
1671 status = OPENSSL_NPN_NEGOTIATED;
1681 /* There's no overlap between our protocols and the server's list. */
1683 status = OPENSSL_NPN_NO_OVERLAP;
1686 *out = (unsigned char *)result + 1;
1687 *outlen = result[0];
1691 # ifndef OPENSSL_NO_NEXTPROTONEG
1693 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
1694 * client's requested protocol for this connection and returns 0. If the
1695 * client didn't request any protocol, then *data is set to NULL. Note that
1696 * the client can request any protocol it chooses. The value returned from
1697 * this function need not be a member of the list of supported protocols
1698 * provided by the callback.
1700 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
1703 *data = s->next_proto_negotiated;
1707 *len = s->next_proto_negotiated_len;
1712 * SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when
1713 * a TLS server needs a list of supported protocols for Next Protocol
1714 * Negotiation. The returned list must be in wire format. The list is
1715 * returned by setting |out| to point to it and |outlen| to its length. This
1716 * memory will not be modified, but one should assume that the SSL* keeps a
1717 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
1718 * wishes to advertise. Otherwise, no such extension will be included in the
1721 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx,
1722 int (*cb) (SSL *ssl,
1725 unsigned int *outlen,
1726 void *arg), void *arg)
1728 ctx->next_protos_advertised_cb = cb;
1729 ctx->next_protos_advertised_cb_arg = arg;
1733 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1734 * client needs to select a protocol from the server's provided list. |out|
1735 * must be set to point to the selected protocol (which may be within |in|).
1736 * The length of the protocol name must be written into |outlen|. The
1737 * server's advertised protocols are provided in |in| and |inlen|. The
1738 * callback can assume that |in| is syntactically valid. The client must
1739 * select a protocol. It is fatal to the connection if this callback returns
1740 * a value other than SSL_TLSEXT_ERR_OK.
1742 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx,
1743 int (*cb) (SSL *s, unsigned char **out,
1744 unsigned char *outlen,
1745 const unsigned char *in,
1747 void *arg), void *arg)
1749 ctx->next_proto_select_cb = cb;
1750 ctx->next_proto_select_cb_arg = arg;
1755 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1756 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1757 * length-prefixed strings). Returns 0 on success.
1759 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
1760 unsigned protos_len)
1762 if (ctx->alpn_client_proto_list)
1763 OPENSSL_free(ctx->alpn_client_proto_list);
1765 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1766 if (!ctx->alpn_client_proto_list)
1768 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1769 ctx->alpn_client_proto_list_len = protos_len;
1775 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1776 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1777 * length-prefixed strings). Returns 0 on success.
1779 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
1780 unsigned protos_len)
1782 if (ssl->alpn_client_proto_list)
1783 OPENSSL_free(ssl->alpn_client_proto_list);
1785 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1786 if (!ssl->alpn_client_proto_list)
1788 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1789 ssl->alpn_client_proto_list_len = protos_len;
1795 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
1796 * called during ClientHello processing in order to select an ALPN protocol
1797 * from the client's list of offered protocols.
1799 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
1800 int (*cb) (SSL *ssl,
1801 const unsigned char **out,
1802 unsigned char *outlen,
1803 const unsigned char *in,
1805 void *arg), void *arg)
1807 ctx->alpn_select_cb = cb;
1808 ctx->alpn_select_cb_arg = arg;
1812 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from
1813 * |ssl|. On return it sets |*data| to point to |*len| bytes of protocol name
1814 * (not including the leading length-prefix byte). If the server didn't
1815 * respond with a negotiated protocol then |*len| will be zero.
1817 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1822 *data = ssl->s3->alpn_selected;
1826 *len = ssl->s3->alpn_selected_len;
1829 #endif /* !OPENSSL_NO_TLSEXT */
1831 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1832 const char *label, size_t llen,
1833 const unsigned char *p, size_t plen,
1836 if (s->version < TLS1_VERSION)
1839 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1844 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1849 ((unsigned int)a->session_id[0]) |
1850 ((unsigned int)a->session_id[1] << 8L) |
1851 ((unsigned long)a->session_id[2] << 16L) |
1852 ((unsigned long)a->session_id[3] << 24L);
1857 * NB: If this function (or indeed the hash function which uses a sort of
1858 * coarser function than this one) is changed, ensure
1859 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
1860 * being able to construct an SSL_SESSION that will collide with any existing
1861 * session with a matching session ID.
1863 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
1865 if (a->ssl_version != b->ssl_version)
1867 if (a->session_id_length != b->session_id_length)
1869 return (memcmp(a->session_id, b->session_id, a->session_id_length));
1873 * These wrapper functions should remain rather than redeclaring
1874 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1875 * variable. The reason is that the functions aren't static, they're exposed
1878 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1879 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1881 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1883 SSL_CTX *ret = NULL;
1886 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
1890 if (FIPS_mode() && (meth->version < TLS1_VERSION)) {
1891 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1895 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
1896 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1899 ret = (SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1903 memset(ret, 0, sizeof(SSL_CTX));
1907 ret->cert_store = NULL;
1908 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
1909 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1910 ret->session_cache_head = NULL;
1911 ret->session_cache_tail = NULL;
1913 /* We take the system default */
1914 ret->session_timeout = meth->get_timeout();
1916 ret->new_session_cb = 0;
1917 ret->remove_session_cb = 0;
1918 ret->get_session_cb = 0;
1919 ret->generate_session_id = 0;
1921 memset((char *)&ret->stats, 0, sizeof(ret->stats));
1923 ret->references = 1;
1924 ret->quiet_shutdown = 0;
1925 ret->info_callback = NULL;
1926 ret->app_verify_callback = 0;
1927 ret->app_verify_arg = NULL;
1928 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
1929 ret->read_ahead = 0;
1930 ret->msg_callback = 0;
1931 ret->msg_callback_arg = NULL;
1932 ret->verify_mode = SSL_VERIFY_NONE;
1933 ret->sid_ctx_length = 0;
1934 ret->default_verify_callback = NULL;
1935 if ((ret->cert = ssl_cert_new()) == NULL)
1938 ret->default_passwd_callback = 0;
1939 ret->default_passwd_callback_userdata = NULL;
1940 ret->client_cert_cb = 0;
1941 ret->app_gen_cookie_cb = 0;
1942 ret->app_verify_cookie_cb = 0;
1944 ret->sessions = lh_SSL_SESSION_new();
1945 if (ret->sessions == NULL)
1947 ret->cert_store = X509_STORE_new();
1948 if (ret->cert_store == NULL)
1951 if(!ssl_create_cipher_list(ret->method,
1952 &ret->cipher_list, &ret->cipher_list_by_id,
1953 SSL_DEFAULT_CIPHER_LIST, ret->cert)
1954 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
1955 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
1959 ret->param = X509_VERIFY_PARAM_new();
1963 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
1964 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1967 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
1968 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1972 if ((ret->client_CA = sk_X509_NAME_new_null()) == NULL)
1975 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1977 ret->extra_certs = NULL;
1978 /* No compression for DTLS */
1979 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1980 ret->comp_methods = SSL_COMP_get_compression_methods();
1982 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1984 #ifndef OPENSSL_NO_TLSEXT
1985 ret->tlsext_servername_callback = 0;
1986 ret->tlsext_servername_arg = NULL;
1987 /* Setup RFC4507 ticket keys */
1988 if ((RAND_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1989 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1990 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1991 ret->options |= SSL_OP_NO_TICKET;
1993 ret->tlsext_status_cb = 0;
1994 ret->tlsext_status_arg = NULL;
1996 # ifndef OPENSSL_NO_NEXTPROTONEG
1997 ret->next_protos_advertised_cb = 0;
1998 ret->next_proto_select_cb = 0;
2001 #ifndef OPENSSL_NO_PSK
2002 ret->psk_identity_hint = NULL;
2003 ret->psk_client_callback = NULL;
2004 ret->psk_server_callback = NULL;
2006 #ifndef OPENSSL_NO_SRP
2007 if(!SSL_CTX_SRP_CTX_init(ret))
2010 #ifndef OPENSSL_NO_ENGINE
2011 ret->client_cert_engine = NULL;
2012 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2013 # define eng_strx(x) #x
2014 # define eng_str(x) eng_strx(x)
2015 /* Use specific client engine automatically... ignore errors */
2018 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2021 ENGINE_load_builtin_engines();
2022 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2024 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2030 * Default is to connect to non-RI servers. When RI is more widely
2031 * deployed might change this.
2033 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2037 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2044 void SSL_CTX_free(SSL_CTX *a)
2051 i = CRYPTO_add(&a->references, -1, CRYPTO_LOCK_SSL_CTX);
2053 REF_PRINT("SSL_CTX", a);
2059 fprintf(stderr, "SSL_CTX_free, bad reference count\n");
2065 X509_VERIFY_PARAM_free(a->param);
2068 * Free internal session cache. However: the remove_cb() may reference
2069 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2070 * after the sessions were flushed.
2071 * As the ex_data handling routines might also touch the session cache,
2072 * the most secure solution seems to be: empty (flush) the cache, then
2073 * free ex_data, then finally free the cache.
2074 * (See ticket [openssl.org #212].)
2076 if (a->sessions != NULL)
2077 SSL_CTX_flush_sessions(a, 0);
2079 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2081 if (a->sessions != NULL)
2082 lh_SSL_SESSION_free(a->sessions);
2084 if (a->cert_store != NULL)
2085 X509_STORE_free(a->cert_store);
2086 if (a->cipher_list != NULL)
2087 sk_SSL_CIPHER_free(a->cipher_list);
2088 if (a->cipher_list_by_id != NULL)
2089 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2090 if (a->cert != NULL)
2091 ssl_cert_free(a->cert);
2092 if (a->client_CA != NULL)
2093 sk_X509_NAME_pop_free(a->client_CA, X509_NAME_free);
2094 if (a->extra_certs != NULL)
2095 sk_X509_pop_free(a->extra_certs, X509_free);
2096 a->comp_methods = NULL;
2098 #ifndef OPENSSL_NO_SRTP
2099 if (a->srtp_profiles)
2100 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2103 #ifndef OPENSSL_NO_PSK
2104 if (a->psk_identity_hint)
2105 OPENSSL_free(a->psk_identity_hint);
2107 #ifndef OPENSSL_NO_SRP
2108 SSL_CTX_SRP_CTX_free(a);
2110 #ifndef OPENSSL_NO_ENGINE
2111 if (a->client_cert_engine)
2112 ENGINE_finish(a->client_cert_engine);
2115 #ifndef OPENSSL_NO_TLSEXT
2116 # ifndef OPENSSL_NO_EC
2117 if (a->tlsext_ecpointformatlist)
2118 OPENSSL_free(a->tlsext_ecpointformatlist);
2119 if (a->tlsext_ellipticcurvelist)
2120 OPENSSL_free(a->tlsext_ellipticcurvelist);
2121 # endif /* OPENSSL_NO_EC */
2122 if (a->alpn_client_proto_list != NULL)
2123 OPENSSL_free(a->alpn_client_proto_list);
2129 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2131 ctx->default_passwd_callback = cb;
2134 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2136 ctx->default_passwd_callback_userdata = u;
2139 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
2140 int (*cb) (X509_STORE_CTX *, void *),
2143 ctx->app_verify_callback = cb;
2144 ctx->app_verify_arg = arg;
2147 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
2148 int (*cb) (int, X509_STORE_CTX *))
2150 ctx->verify_mode = mode;
2151 ctx->default_verify_callback = cb;
2154 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
2156 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2159 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg),
2162 ssl_cert_set_cert_cb(c->cert, cb, arg);
2165 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
2167 ssl_cert_set_cert_cb(s->cert, cb, arg);
2170 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2173 int rsa_enc, rsa_tmp, rsa_sign, dh_tmp, dh_rsa, dh_dsa, dsa_sign;
2174 int rsa_enc_export, dh_rsa_export, dh_dsa_export;
2175 int rsa_tmp_export, dh_tmp_export, kl;
2176 unsigned long mask_k, mask_a, emask_k, emask_a;
2177 #ifndef OPENSSL_NO_EC
2178 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2179 int have_ecdh_tmp, ecdh_ok;
2181 EVP_PKEY *ecc_pkey = NULL;
2182 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2187 kl = SSL_C_EXPORT_PKEYLENGTH(cipher);
2189 #ifndef OPENSSL_NO_RSA
2190 rsa_tmp = (c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2191 rsa_tmp_export = (c->rsa_tmp_cb != NULL ||
2192 (rsa_tmp && RSA_size(c->rsa_tmp) * 8 <= kl));
2194 rsa_tmp = rsa_tmp_export = 0;
2196 #ifndef OPENSSL_NO_DH
2197 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2198 dh_tmp_export = !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2200 && DH_size(c->dh_tmp) * 8 <= kl));
2202 dh_tmp = dh_tmp_export = 0;
2205 #ifndef OPENSSL_NO_EC
2206 have_ecdh_tmp = (c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2208 cpk = &(c->pkeys[SSL_PKEY_RSA_ENC]);
2209 rsa_enc = cpk->valid_flags & CERT_PKEY_VALID;
2210 rsa_enc_export = (rsa_enc && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2211 cpk = &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2212 rsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2213 cpk = &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2214 dsa_sign = cpk->valid_flags & CERT_PKEY_SIGN;
2215 cpk = &(c->pkeys[SSL_PKEY_DH_RSA]);
2216 dh_rsa = cpk->valid_flags & CERT_PKEY_VALID;
2217 dh_rsa_export = (dh_rsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2218 cpk = &(c->pkeys[SSL_PKEY_DH_DSA]);
2219 /* FIX THIS EAY EAY EAY */
2220 dh_dsa = cpk->valid_flags & CERT_PKEY_VALID;
2221 dh_dsa_export = (dh_dsa && EVP_PKEY_size(cpk->privatekey) * 8 <= kl);
2222 cpk = &(c->pkeys[SSL_PKEY_ECC]);
2223 #ifndef OPENSSL_NO_EC
2224 have_ecc_cert = cpk->valid_flags & CERT_PKEY_VALID;
2233 "rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2234 rsa_tmp, rsa_tmp_export, dh_tmp, have_ecdh_tmp, rsa_enc,
2235 rsa_enc_export, rsa_sign, dsa_sign, dh_rsa, dh_dsa);
2238 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2239 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2240 mask_k |= SSL_kGOST;
2241 mask_a |= SSL_aGOST01;
2243 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2244 if (cpk->x509 != NULL && cpk->privatekey != NULL) {
2245 mask_k |= SSL_kGOST;
2246 mask_a |= SSL_aGOST94;
2249 if (rsa_enc || (rsa_tmp && rsa_sign))
2251 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2252 emask_k |= SSL_kRSA;
2255 emask_k |= SSL_kDHE;
2263 emask_k |= SSL_kDHr;
2268 emask_k |= SSL_kDHd;
2270 if (emask_k & (SSL_kDHr | SSL_kDHd))
2273 if (rsa_enc || rsa_sign) {
2275 emask_a |= SSL_aRSA;
2280 emask_a |= SSL_aDSS;
2283 mask_a |= SSL_aNULL;
2284 emask_a |= SSL_aNULL;
2286 #ifndef OPENSSL_NO_KRB5
2287 mask_k |= SSL_kKRB5;
2288 mask_a |= SSL_aKRB5;
2289 emask_k |= SSL_kKRB5;
2290 emask_a |= SSL_aKRB5;
2294 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
2295 * depending on the key usage extension.
2297 #ifndef OPENSSL_NO_EC
2298 if (have_ecc_cert) {
2299 cpk = &c->pkeys[SSL_PKEY_ECC];
2301 /* This call populates extension flags (ex_flags) */
2302 X509_check_purpose(x, -1, 0);
2303 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2304 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2305 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2306 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2307 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2309 ecc_pkey = X509_get_pubkey(x);
2310 ecc_pkey_size = (ecc_pkey != NULL) ? EVP_PKEY_bits(ecc_pkey) : 0;
2311 EVP_PKEY_free(ecc_pkey);
2312 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2313 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2314 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2318 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa) {
2319 mask_k |= SSL_kECDHr;
2320 mask_a |= SSL_aECDH;
2321 if (ecc_pkey_size <= 163) {
2322 emask_k |= SSL_kECDHr;
2323 emask_a |= SSL_aECDH;
2327 if (pk_nid == NID_X9_62_id_ecPublicKey) {
2328 mask_k |= SSL_kECDHe;
2329 mask_a |= SSL_aECDH;
2330 if (ecc_pkey_size <= 163) {
2331 emask_k |= SSL_kECDHe;
2332 emask_a |= SSL_aECDH;
2337 mask_a |= SSL_aECDSA;
2338 emask_a |= SSL_aECDSA;
2343 #ifndef OPENSSL_NO_EC
2344 if (have_ecdh_tmp) {
2345 mask_k |= SSL_kECDHE;
2346 emask_k |= SSL_kECDHE;
2350 #ifndef OPENSSL_NO_PSK
2353 emask_k |= SSL_kPSK;
2354 emask_a |= SSL_aPSK;
2359 c->export_mask_k = emask_k;
2360 c->export_mask_a = emask_a;
2364 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2365 #define ku_reject(x, usage) \
2366 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2368 #ifndef OPENSSL_NO_EC
2370 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2372 unsigned long alg_k, alg_a;
2373 EVP_PKEY *pkey = NULL;
2375 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2376 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2378 alg_k = cs->algorithm_mkey;
2379 alg_a = cs->algorithm_auth;
2381 if (SSL_C_IS_EXPORT(cs)) {
2382 /* ECDH key length in export ciphers must be <= 163 bits */
2383 pkey = X509_get_pubkey(x);
2386 keysize = EVP_PKEY_bits(pkey);
2387 EVP_PKEY_free(pkey);
2392 /* This call populates the ex_flags field correctly */
2393 X509_check_purpose(x, -1, 0);
2394 if ((x->sig_alg) && (x->sig_alg->algorithm)) {
2395 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2396 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2398 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr) {
2399 /* key usage, if present, must allow key agreement */
2400 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT)) {
2401 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2402 SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2405 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION) {
2406 /* signature alg must be ECDSA */
2407 if (pk_nid != NID_X9_62_id_ecPublicKey) {
2408 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2409 SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2413 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION) {
2414 /* signature alg must be RSA */
2416 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa) {
2417 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2418 SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2423 if (alg_a & SSL_aECDSA) {
2424 /* key usage, if present, must allow signing */
2425 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE)) {
2426 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
2427 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2432 return 1; /* all checks are ok */
2437 static int ssl_get_server_cert_index(const SSL *s)
2440 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2441 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2442 idx = SSL_PKEY_RSA_SIGN;
2444 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX, ERR_R_INTERNAL_ERROR);
2448 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2454 if (!s->s3 || !s->s3->tmp.new_cipher)
2456 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2458 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2460 * Broken protocol test: return last used certificate: which may mismatch
2463 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2467 i = ssl_get_server_cert_index(s);
2469 /* This may or may not be an error. */
2474 return &c->pkeys[i];
2477 EVP_PKEY *ssl_get_sign_pkey(SSL *s, const SSL_CIPHER *cipher,
2480 unsigned long alg_a;
2484 alg_a = cipher->algorithm_auth;
2487 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2489 * Broken protocol test: use last key: which may mismatch the one
2492 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2493 idx = c->key - c->pkeys;
2497 if ((alg_a & SSL_aDSS) &&
2498 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2499 idx = SSL_PKEY_DSA_SIGN;
2500 else if (alg_a & SSL_aRSA) {
2501 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2502 idx = SSL_PKEY_RSA_SIGN;
2503 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2504 idx = SSL_PKEY_RSA_ENC;
2505 } else if ((alg_a & SSL_aECDSA) &&
2506 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2509 SSLerr(SSL_F_SSL_GET_SIGN_PKEY, ERR_R_INTERNAL_ERROR);
2513 *pmd = c->pkeys[idx].digest;
2514 return c->pkeys[idx].privatekey;
2517 #ifndef OPENSSL_NO_TLSEXT
2518 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2519 size_t *serverinfo_length)
2523 *serverinfo_length = 0;
2526 i = ssl_get_server_cert_index(s);
2530 if (c->pkeys[i].serverinfo == NULL)
2533 *serverinfo = c->pkeys[i].serverinfo;
2534 *serverinfo_length = c->pkeys[i].serverinfo_length;
2539 void ssl_update_cache(SSL *s, int mode)
2544 * If the session_id_length is 0, we are not supposed to cache it, and it
2545 * would be rather hard to do anyway :-)
2547 if (s->session->session_id_length == 0)
2550 i = s->session_ctx->session_cache_mode;
2551 if ((i & mode) && (!s->hit)
2552 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2553 || SSL_CTX_add_session(s->session_ctx, s->session))
2554 && (s->session_ctx->new_session_cb != NULL)) {
2555 CRYPTO_add(&s->session->references, 1, CRYPTO_LOCK_SSL_SESSION);
2556 if (!s->session_ctx->new_session_cb(s, s->session))
2557 SSL_SESSION_free(s->session);
2560 /* auto flush every 255 connections */
2561 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
2562 if ((((mode & SSL_SESS_CACHE_CLIENT)
2563 ? s->session_ctx->stats.sess_connect_good
2564 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
2565 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
2570 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2575 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2580 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2585 if (s->method != meth) {
2586 if (s->handshake_func != NULL)
2587 conn = (s->handshake_func == s->method->ssl_connect);
2589 if (s->method->version == meth->version)
2592 s->method->ssl_free(s);
2594 ret = s->method->ssl_new(s);
2598 s->handshake_func = meth->ssl_connect;
2600 s->handshake_func = meth->ssl_accept;
2605 int SSL_get_error(const SSL *s, int i)
2612 return (SSL_ERROR_NONE);
2615 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
2616 * where we do encode the error
2618 if ((l = ERR_peek_error()) != 0) {
2619 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2620 return (SSL_ERROR_SYSCALL);
2622 return (SSL_ERROR_SSL);
2625 if ((i < 0) && SSL_want_read(s)) {
2626 bio = SSL_get_rbio(s);
2627 if (BIO_should_read(bio))
2628 return (SSL_ERROR_WANT_READ);
2629 else if (BIO_should_write(bio))
2631 * This one doesn't make too much sense ... We never try to write
2632 * to the rbio, and an application program where rbio and wbio
2633 * are separate couldn't even know what it should wait for.
2634 * However if we ever set s->rwstate incorrectly (so that we have
2635 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
2636 * wbio *are* the same, this test works around that bug; so it
2637 * might be safer to keep it.
2639 return (SSL_ERROR_WANT_WRITE);
2640 else if (BIO_should_io_special(bio)) {
2641 reason = BIO_get_retry_reason(bio);
2642 if (reason == BIO_RR_CONNECT)
2643 return (SSL_ERROR_WANT_CONNECT);
2644 else if (reason == BIO_RR_ACCEPT)
2645 return (SSL_ERROR_WANT_ACCEPT);
2647 return (SSL_ERROR_SYSCALL); /* unknown */
2651 if ((i < 0) && SSL_want_write(s)) {
2652 bio = SSL_get_wbio(s);
2653 if (BIO_should_write(bio))
2654 return (SSL_ERROR_WANT_WRITE);
2655 else if (BIO_should_read(bio))
2657 * See above (SSL_want_read(s) with BIO_should_write(bio))
2659 return (SSL_ERROR_WANT_READ);
2660 else if (BIO_should_io_special(bio)) {
2661 reason = BIO_get_retry_reason(bio);
2662 if (reason == BIO_RR_CONNECT)
2663 return (SSL_ERROR_WANT_CONNECT);
2664 else if (reason == BIO_RR_ACCEPT)
2665 return (SSL_ERROR_WANT_ACCEPT);
2667 return (SSL_ERROR_SYSCALL);
2670 if ((i < 0) && SSL_want_x509_lookup(s)) {
2671 return (SSL_ERROR_WANT_X509_LOOKUP);
2675 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2676 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2677 return (SSL_ERROR_ZERO_RETURN);
2679 return (SSL_ERROR_SYSCALL);
2682 int SSL_do_handshake(SSL *s)
2686 if (s->handshake_func == NULL) {
2687 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
2691 s->method->ssl_renegotiate_check(s);
2693 if (SSL_in_init(s) || SSL_in_before(s)) {
2694 ret = s->handshake_func(s);
2700 * For the next 2 functions, SSL_clear() sets shutdown and so one of these
2701 * calls will reset it
2703 void SSL_set_accept_state(SSL *s)
2707 s->state = SSL_ST_ACCEPT | SSL_ST_BEFORE;
2708 s->handshake_func = s->method->ssl_accept;
2709 /* clear the current cipher */
2710 ssl_clear_cipher_ctx(s);
2711 ssl_clear_hash_ctx(&s->read_hash);
2712 ssl_clear_hash_ctx(&s->write_hash);
2715 void SSL_set_connect_state(SSL *s)
2719 s->state = SSL_ST_CONNECT | SSL_ST_BEFORE;
2720 s->handshake_func = s->method->ssl_connect;
2721 /* clear the current cipher */
2722 ssl_clear_cipher_ctx(s);
2723 ssl_clear_hash_ctx(&s->read_hash);
2724 ssl_clear_hash_ctx(&s->write_hash);
2727 int ssl_undefined_function(SSL *s)
2729 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2733 int ssl_undefined_void_function(void)
2735 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
2736 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2740 int ssl_undefined_const_function(const SSL *s)
2742 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,
2743 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2747 SSL_METHOD *ssl_bad_method(int ver)
2749 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2753 const char *SSL_get_version(const SSL *s)
2755 if (s->version == TLS1_2_VERSION)
2757 else if (s->version == TLS1_1_VERSION)
2759 else if (s->version == TLS1_VERSION)
2761 else if (s->version == SSL3_VERSION)
2763 else if (s->version == DTLS1_BAD_VER)
2764 return ("DTLSv0.9");
2765 else if (s->version == DTLS1_VERSION)
2767 else if (s->version == DTLS1_2_VERSION)
2768 return ("DTLSv1.2");
2773 SSL *SSL_dup(SSL *s)
2775 STACK_OF(X509_NAME) *sk;
2780 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2783 ret->version = s->version;
2784 ret->type = s->type;
2785 ret->method = s->method;
2787 if (s->session != NULL) {
2788 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2789 if(!SSL_copy_session_id(ret, s))
2793 * No session has been established yet, so we have to expect that
2794 * s->cert or ret->cert will be changed later -- they should not both
2795 * point to the same object, and thus we can't use
2796 * SSL_copy_session_id.
2799 ret->method->ssl_free(ret);
2800 ret->method = s->method;
2801 ret->method->ssl_new(ret);
2803 if (s->cert != NULL) {
2804 if (ret->cert != NULL) {
2805 ssl_cert_free(ret->cert);
2807 ret->cert = ssl_cert_dup(s->cert);
2808 if (ret->cert == NULL)
2812 if(!SSL_set_session_id_context(ret, s->sid_ctx, s->sid_ctx_length))
2816 ret->options = s->options;
2817 ret->mode = s->mode;
2818 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
2819 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
2820 ret->msg_callback = s->msg_callback;
2821 ret->msg_callback_arg = s->msg_callback_arg;
2822 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
2823 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
2824 ret->generate_session_id = s->generate_session_id;
2826 SSL_set_info_callback(ret, SSL_get_info_callback(s));
2828 ret->debug = s->debug;
2830 /* copy app data, a little dangerous perhaps */
2831 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2834 /* setup rbio, and wbio */
2835 if (s->rbio != NULL) {
2836 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
2839 if (s->wbio != NULL) {
2840 if (s->wbio != s->rbio) {
2841 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
2844 ret->wbio = ret->rbio;
2846 ret->rwstate = s->rwstate;
2847 ret->in_handshake = s->in_handshake;
2848 ret->handshake_func = s->handshake_func;
2849 ret->server = s->server;
2850 ret->renegotiate = s->renegotiate;
2851 ret->new_session = s->new_session;
2852 ret->quiet_shutdown = s->quiet_shutdown;
2853 ret->shutdown = s->shutdown;
2854 ret->state = s->state; /* SSL_dup does not really work at any state,
2856 ret->rstate = s->rstate;
2857 ret->init_num = 0; /* would have to copy ret->init_buf,
2858 * ret->init_msg, ret->init_num,
2862 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2864 /* dup the cipher_list and cipher_list_by_id stacks */
2865 if (s->cipher_list != NULL) {
2866 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2869 if (s->cipher_list_by_id != NULL)
2870 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2874 /* Dup the client_CA list */
2875 if (s->client_CA != NULL) {
2876 if ((sk = sk_X509_NAME_dup(s->client_CA)) == NULL)
2878 ret->client_CA = sk;
2879 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
2880 xn = sk_X509_NAME_value(sk, i);
2881 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
2897 void ssl_clear_cipher_ctx(SSL *s)
2899 if (s->enc_read_ctx != NULL) {
2900 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2901 OPENSSL_free(s->enc_read_ctx);
2902 s->enc_read_ctx = NULL;
2904 if (s->enc_write_ctx != NULL) {
2905 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2906 OPENSSL_free(s->enc_write_ctx);
2907 s->enc_write_ctx = NULL;
2909 #ifndef OPENSSL_NO_COMP
2910 if (s->expand != NULL) {
2911 COMP_CTX_free(s->expand);
2914 if (s->compress != NULL) {
2915 COMP_CTX_free(s->compress);
2921 X509 *SSL_get_certificate(const SSL *s)
2923 if (s->cert != NULL)
2924 return (s->cert->key->x509);
2929 EVP_PKEY *SSL_get_privatekey(const SSL *s)
2931 if (s->cert != NULL)
2932 return (s->cert->key->privatekey);
2937 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
2939 if (ctx->cert != NULL)
2940 return ctx->cert->key->x509;
2945 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
2947 if (ctx->cert != NULL)
2948 return ctx->cert->key->privatekey;
2953 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2955 if ((s->session != NULL) && (s->session->cipher != NULL))
2956 return (s->session->cipher);
2960 #ifdef OPENSSL_NO_COMP
2961 const void *SSL_get_current_compression(SSL *s)
2966 const void *SSL_get_current_expansion(SSL *s)
2972 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2974 if (s->compress != NULL)
2975 return (s->compress->meth);
2979 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2981 if (s->expand != NULL)
2982 return (s->expand->meth);
2987 int ssl_init_wbio_buffer(SSL *s, int push)
2991 if (s->bbio == NULL) {
2992 bbio = BIO_new(BIO_f_buffer());
2998 if (s->bbio == s->wbio)
2999 s->wbio = BIO_pop(s->wbio);
3001 (void)BIO_reset(bbio);
3002 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3003 if (!BIO_set_read_buffer_size(bbio, 1)) {
3004 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3008 if (s->wbio != bbio)
3009 s->wbio = BIO_push(bbio, s->wbio);
3011 if (s->wbio == bbio)
3012 s->wbio = BIO_pop(bbio);
3017 void ssl_free_wbio_buffer(SSL *s)
3019 if (s->bbio == NULL)
3022 if (s->bbio == s->wbio) {
3023 /* remove buffering */
3024 s->wbio = BIO_pop(s->wbio);
3025 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids
3026 * adding one more preprocessor symbol */
3027 assert(s->wbio != NULL);
3034 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3036 ctx->quiet_shutdown = mode;
3039 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3041 return (ctx->quiet_shutdown);
3044 void SSL_set_quiet_shutdown(SSL *s, int mode)
3046 s->quiet_shutdown = mode;
3049 int SSL_get_quiet_shutdown(const SSL *s)
3051 return (s->quiet_shutdown);
3054 void SSL_set_shutdown(SSL *s, int mode)
3059 int SSL_get_shutdown(const SSL *s)
3061 return (s->shutdown);
3064 int SSL_version(const SSL *s)
3066 return (s->version);
3069 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3074 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3077 if (ssl->ctx == ctx)
3079 #ifndef OPENSSL_NO_TLSEXT
3081 ctx = ssl->initial_ctx;
3083 new_cert = ssl_cert_dup(ctx->cert);
3084 if (new_cert == NULL) {
3087 /* Preserve any already negotiated parameters */
3089 new_cert->peer_sigalgs = ssl->cert->peer_sigalgs;
3090 new_cert->peer_sigalgslen = ssl->cert->peer_sigalgslen;
3091 ssl->cert->peer_sigalgs = NULL;
3092 new_cert->ciphers_raw = ssl->cert->ciphers_raw;
3093 new_cert->ciphers_rawlen = ssl->cert->ciphers_rawlen;
3094 ssl->cert->ciphers_raw = NULL;
3096 ssl_cert_free(ssl->cert);
3097 ssl->cert = new_cert;
3100 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3101 * so setter APIs must prevent invalid lengths from entering the system.
3103 OPENSSL_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx));
3106 * If the session ID context matches that of the parent SSL_CTX,
3107 * inherit it from the new SSL_CTX as well. If however the context does
3108 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3109 * leave it unchanged.
3111 if ((ssl->ctx != NULL) &&
3112 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3113 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3114 ssl->sid_ctx_length = ctx->sid_ctx_length;
3115 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3118 CRYPTO_add(&ctx->references, 1, CRYPTO_LOCK_SSL_CTX);
3119 if (ssl->ctx != NULL)
3120 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3126 #ifndef OPENSSL_NO_STDIO
3127 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3129 return (X509_STORE_set_default_paths(ctx->cert_store));
3132 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3135 return (X509_STORE_load_locations(ctx->cert_store, CAfile, CApath));
3139 void SSL_set_info_callback(SSL *ssl,
3140 void (*cb) (const SSL *ssl, int type, int val))
3142 ssl->info_callback = cb;
3146 * One compiler (Diab DCC) doesn't like argument names in returned function
3149 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3152 return ssl->info_callback;
3155 int SSL_state(const SSL *ssl)
3157 return (ssl->state);
3160 void SSL_set_state(SSL *ssl, int state)
3165 void SSL_set_verify_result(SSL *ssl, long arg)
3167 ssl->verify_result = arg;
3170 long SSL_get_verify_result(const SSL *ssl)
3172 return (ssl->verify_result);
3175 int SSL_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3176 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
3178 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3179 new_func, dup_func, free_func);
3182 int SSL_set_ex_data(SSL *s, int idx, void *arg)
3184 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3187 void *SSL_get_ex_data(const SSL *s, int idx)
3189 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3192 int SSL_CTX_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
3193 CRYPTO_EX_dup *dup_func,
3194 CRYPTO_EX_free *free_func)
3196 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3197 new_func, dup_func, free_func);
3200 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3202 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
3205 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3207 return (CRYPTO_get_ex_data(&s->ex_data, idx));
3215 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3217 return (ctx->cert_store);
3220 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3222 if (ctx->cert_store != NULL)
3223 X509_STORE_free(ctx->cert_store);
3224 ctx->cert_store = store;
3227 int SSL_want(const SSL *s)
3229 return (s->rwstate);
3233 * \brief Set the callback for generating temporary RSA keys.
3234 * \param ctx the SSL context.
3235 * \param cb the callback
3238 #ifndef OPENSSL_NO_RSA
3239 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx, RSA *(*cb) (SSL *ssl,
3243 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3246 void SSL_set_tmp_rsa_callback(SSL *ssl, RSA *(*cb) (SSL *ssl,
3250 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_RSA_CB, (void (*)(void))cb);
3256 * \brief The RSA temporary key callback function.
3257 * \param ssl the SSL session.
3258 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3259 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3260 * of the required key in bits.
3261 * \return the temporary RSA key.
3262 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3265 RSA *cb(SSL *ssl, int is_export, int keylength)
3271 * \brief Set the callback for generating temporary DH keys.
3272 * \param ctx the SSL context.
3273 * \param dh the callback
3276 #ifndef OPENSSL_NO_DH
3277 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3278 DH *(*dh) (SSL *ssl, int is_export,
3281 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3284 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3287 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3291 #ifndef OPENSSL_NO_EC
3292 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,
3293 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3296 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_ECDH_CB,
3297 (void (*)(void))ecdh);
3300 void SSL_set_tmp_ecdh_callback(SSL *ssl,
3301 EC_KEY *(*ecdh) (SSL *ssl, int is_export,
3304 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_ECDH_CB, (void (*)(void))ecdh);
3308 #ifndef OPENSSL_NO_PSK
3309 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3311 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3312 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT,
3313 SSL_R_DATA_LENGTH_TOO_LONG);
3316 if (ctx->psk_identity_hint != NULL)
3317 OPENSSL_free(ctx->psk_identity_hint);
3318 if (identity_hint != NULL) {
3319 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3320 if (ctx->psk_identity_hint == NULL)
3323 ctx->psk_identity_hint = NULL;
3327 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3332 if (s->session == NULL)
3333 return 1; /* session not created yet, ignored */
3335 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3336 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3339 if (s->session->psk_identity_hint != NULL)
3340 OPENSSL_free(s->session->psk_identity_hint);
3341 if (identity_hint != NULL) {
3342 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3343 if (s->session->psk_identity_hint == NULL)
3346 s->session->psk_identity_hint = NULL;
3350 const char *SSL_get_psk_identity_hint(const SSL *s)
3352 if (s == NULL || s->session == NULL)
3354 return (s->session->psk_identity_hint);
3357 const char *SSL_get_psk_identity(const SSL *s)
3359 if (s == NULL || s->session == NULL)
3361 return (s->session->psk_identity);
3364 void SSL_set_psk_client_callback(SSL *s,
3365 unsigned int (*cb) (SSL *ssl,
3374 s->psk_client_callback = cb;
3377 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3378 unsigned int (*cb) (SSL *ssl,
3387 ctx->psk_client_callback = cb;
3390 void SSL_set_psk_server_callback(SSL *s,
3391 unsigned int (*cb) (SSL *ssl,
3392 const char *identity,
3397 s->psk_server_callback = cb;
3400 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3401 unsigned int (*cb) (SSL *ssl,
3402 const char *identity,
3407 ctx->psk_server_callback = cb;
3411 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
3412 void (*cb) (int write_p, int version,
3413 int content_type, const void *buf,
3414 size_t len, SSL *ssl, void *arg))
3416 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3419 void SSL_set_msg_callback(SSL *ssl,
3420 void (*cb) (int write_p, int version,
3421 int content_type, const void *buf,
3422 size_t len, SSL *ssl, void *arg))
3424 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3427 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3428 int (*cb) (SSL *ssl,
3432 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3433 (void (*)(void))cb);
3436 void SSL_set_not_resumable_session_callback(SSL *ssl,
3437 int (*cb) (SSL *ssl,
3438 int is_forward_secure))
3440 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3441 (void (*)(void))cb);
3445 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3446 * vairable, freeing EVP_MD_CTX previously stored in that variable, if any.
3447 * If EVP_MD pointer is passed, initializes ctx with this md Returns newly
3451 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
3453 ssl_clear_hash_ctx(hash);
3454 *hash = EVP_MD_CTX_create();
3456 EVP_DigestInit_ex(*hash, md, NULL);
3460 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3464 EVP_MD_CTX_destroy(*hash);
3468 /* Retrieve handshake hashes */
3469 int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen)
3471 unsigned char *p = out;
3476 EVP_MD_CTX_init(&ctx);
3477 for (idx = 0; ssl_get_handshake_digest(idx, &mask, &md); idx++) {
3478 if (mask & ssl_get_algorithm2(s)) {
3479 int hashsize = EVP_MD_size(md);
3480 EVP_MD_CTX *hdgst = s->s3->handshake_dgst[idx];
3481 if (!hdgst || hashsize < 0 || hashsize > outlen)
3483 if (!EVP_MD_CTX_copy_ex(&ctx, hdgst))
3485 if (!EVP_DigestFinal_ex(&ctx, p, NULL))
3493 EVP_MD_CTX_cleanup(&ctx);
3497 void SSL_set_debug(SSL *s, int debug)
3502 int SSL_cache_hit(SSL *s)
3507 int SSL_is_server(SSL *s)
3512 void SSL_set_security_level(SSL *s, int level)
3514 s->cert->sec_level = level;
3517 int SSL_get_security_level(const SSL *s)
3519 return s->cert->sec_level;
3522 void SSL_set_security_callback(SSL *s,
3523 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3524 int bits, int nid, void *other,
3527 s->cert->sec_cb = cb;
3530 int (*SSL_get_security_callback(const SSL *s)) (SSL *s, SSL_CTX *ctx, int op,
3532 void *other, void *ex) {
3533 return s->cert->sec_cb;
3536 void SSL_set0_security_ex_data(SSL *s, void *ex)
3538 s->cert->sec_ex = ex;
3541 void *SSL_get0_security_ex_data(const SSL *s)
3543 return s->cert->sec_ex;
3546 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3548 ctx->cert->sec_level = level;
3551 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3553 return ctx->cert->sec_level;
3556 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
3557 int (*cb) (SSL *s, SSL_CTX *ctx, int op,
3558 int bits, int nid, void *other,
3561 ctx->cert->sec_cb = cb;
3564 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (SSL *s,
3570 return ctx->cert->sec_cb;
3573 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3575 ctx->cert->sec_ex = ex;
3578 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3580 return ctx->cert->sec_ex;
3583 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);