1 /*! \file ssl/ssl_lib.c
2 * \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={
166 /* evil casts, but these functions are only called if there's a library bug */
167 (int (*)(SSL *,int))ssl_undefined_function,
168 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
169 ssl_undefined_function,
170 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
171 (int (*)(SSL*, int))ssl_undefined_function,
172 (int (*)(SSL *, const char*, int, unsigned char *))ssl_undefined_function,
173 0, /* finish_mac_length */
174 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
175 NULL, /* client_finished_label */
176 0, /* client_finished_label_len */
177 NULL, /* server_finished_label */
178 0, /* server_finished_label_len */
179 (int (*)(int))ssl_undefined_function,
180 (int (*)(SSL *, unsigned char *, size_t, const char *,
181 size_t, const unsigned char *, size_t,
182 int use_context)) ssl_undefined_function,
185 int SSL_clear(SSL *s)
188 if (s->method == NULL)
190 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
194 if (ssl_clear_bad_session(s))
196 SSL_SESSION_free(s->session);
204 #if 0 /* Disabled since version 1.10 of this file (early return not
205 * needed because SSL_clear is not called when doing renegotiation) */
206 /* This is set if we are doing dynamic renegotiation so keep
207 * the old cipher. It is sort of a SSL_clear_lite :-) */
208 if (s->renegotiate) return(1);
212 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
219 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
221 s->version=s->method->version;
222 s->client_version=s->version;
223 s->rwstate=SSL_NOTHING;
224 s->rstate=SSL_ST_READ_HEADER;
226 s->read_ahead=s->ctx->read_ahead;
229 if (s->init_buf != NULL)
231 BUF_MEM_free(s->init_buf);
235 ssl_clear_cipher_ctx(s);
236 ssl_clear_hash_ctx(&s->read_hash);
237 ssl_clear_hash_ctx(&s->write_hash);
242 /* Check to see if we were changed into a different method, if
243 * so, revert back if we are not doing session-id reuse. */
244 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
246 s->method->ssl_free(s);
247 s->method=s->ctx->method;
248 if (!s->method->ssl_new(s))
253 s->method->ssl_clear(s);
257 /** Used to change an SSL_CTXs default SSL method type */
258 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth)
260 STACK_OF(SSL_CIPHER) *sk;
264 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
265 &(ctx->cipher_list_by_id),
266 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST, ctx->cert);
267 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
269 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
275 SSL *SSL_new(SSL_CTX *ctx)
281 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
284 if (ctx->method == NULL)
286 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
290 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
291 if (s == NULL) goto err;
292 memset(s,0,sizeof(SSL));
294 #ifndef OPENSSL_NO_KRB5
295 s->kssl_ctx = kssl_ctx_new();
296 #endif /* OPENSSL_NO_KRB5 */
298 s->options=ctx->options;
300 s->max_cert_list=ctx->max_cert_list;
302 if (ctx->cert != NULL)
304 /* Earlier library versions used to copy the pointer to
305 * the CERT, not its contents; only when setting new
306 * parameters for the per-SSL copy, ssl_cert_new would be
307 * called (and the direct reference to the per-SSL_CTX
308 * settings would be lost, but those still were indirectly
309 * accessed for various purposes, and for that reason they
310 * used to be known as s->ctx->default_cert).
311 * Now we don't look at the SSL_CTX's CERT after having
312 * duplicated it once. */
314 s->cert = ssl_cert_dup(ctx->cert);
319 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
321 s->read_ahead=ctx->read_ahead;
322 s->msg_callback=ctx->msg_callback;
323 s->msg_callback_arg=ctx->msg_callback_arg;
324 s->verify_mode=ctx->verify_mode;
325 s->not_resumable_session_cb=ctx->not_resumable_session_cb;
327 s->verify_depth=ctx->verify_depth;
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);
340 s->purpose = ctx->purpose;
341 s->trust = ctx->trust;
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);
360 #ifndef OPENSSL_NO_EC
361 if (ctx->tlsext_ecpointformatlist)
363 s->tlsext_ecpointformatlist =
364 BUF_memdup(ctx->tlsext_ecpointformatlist,
365 ctx->tlsext_ecpointformatlist_length);
366 if (!s->tlsext_ecpointformatlist)
368 s->tlsext_ecpointformatlist_length =
369 ctx->tlsext_ecpointformatlist_length;
371 if (ctx->tlsext_ellipticcurvelist)
373 s->tlsext_ellipticcurvelist =
374 BUF_memdup(ctx->tlsext_ellipticcurvelist,
375 ctx->tlsext_ellipticcurvelist_length);
376 if (!s->tlsext_ellipticcurvelist)
378 s->tlsext_ellipticcurvelist_length =
379 ctx->tlsext_ellipticcurvelist_length;
382 # ifndef OPENSSL_NO_NEXTPROTONEG
383 s->next_proto_negotiated = NULL;
386 if (s->ctx->alpn_client_proto_list)
388 s->alpn_client_proto_list =
389 OPENSSL_malloc(s->ctx->alpn_client_proto_list_len);
390 if (s->alpn_client_proto_list == NULL)
392 memcpy(s->alpn_client_proto_list, s->ctx->alpn_client_proto_list,
393 s->ctx->alpn_client_proto_list_len);
394 s->alpn_client_proto_list_len = s->ctx->alpn_client_proto_list_len;
398 s->verify_result=X509_V_OK;
400 s->method=ctx->method;
402 if (!s->method->ssl_new(s))
406 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
410 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
412 #ifndef OPENSSL_NO_PSK
413 s->psk_client_callback=ctx->psk_client_callback;
414 s->psk_server_callback=ctx->psk_server_callback;
422 ssl_cert_free(s->cert);
424 SSL_CTX_free(s->ctx); /* decrement reference count */
427 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
431 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
432 unsigned int sid_ctx_len)
434 if(sid_ctx_len > sizeof ctx->sid_ctx)
436 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
439 ctx->sid_ctx_length=sid_ctx_len;
440 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
445 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
446 unsigned int sid_ctx_len)
448 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
450 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
453 ssl->sid_ctx_length=sid_ctx_len;
454 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
459 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
461 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
462 ctx->generate_session_id = cb;
463 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
467 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
469 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
470 ssl->generate_session_id = cb;
471 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
475 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
478 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
479 * we can "construct" a session to give us the desired check - ie. to
480 * find if there's a session in the hash table that would conflict with
481 * any new session built out of this id/id_len and the ssl_version in
482 * use by this SSL. */
485 if(id_len > sizeof r.session_id)
488 r.ssl_version = ssl->version;
489 r.session_id_length = id_len;
490 memcpy(r.session_id, id, id_len);
491 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
492 * callback is calling us to check the uniqueness of a shorter ID, it
493 * must be compared as a padded-out ID because that is what it will be
494 * converted to when the callback has finished choosing it. */
495 if((r.ssl_version == SSL2_VERSION) &&
496 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
498 memset(r.session_id + id_len, 0,
499 SSL2_SSL_SESSION_ID_LENGTH - id_len);
500 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
503 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
504 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
505 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
509 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
511 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
514 int SSL_set_purpose(SSL *s, int purpose)
516 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
519 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
521 return X509_VERIFY_PARAM_set_trust(s->param, trust);
524 int SSL_set_trust(SSL *s, int trust)
526 return X509_VERIFY_PARAM_set_trust(s->param, trust);
529 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
531 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
534 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
536 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
539 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
544 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
549 void SSL_certs_clear(SSL *s)
551 ssl_cert_clear_certs(s->cert);
554 void SSL_free(SSL *s)
561 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
569 fprintf(stderr,"SSL_free, bad reference count\n");
575 X509_VERIFY_PARAM_free(s->param);
577 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
581 /* If the buffering BIO is in place, pop it off */
582 if (s->bbio == s->wbio)
584 s->wbio=BIO_pop(s->wbio);
590 BIO_free_all(s->rbio);
591 if ((s->wbio != NULL) && (s->wbio != s->rbio))
592 BIO_free_all(s->wbio);
594 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
596 /* add extra stuff */
597 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
598 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
600 /* Make the next call work :-) */
601 if (s->session != NULL)
603 ssl_clear_bad_session(s);
604 SSL_SESSION_free(s->session);
607 ssl_clear_cipher_ctx(s);
608 ssl_clear_hash_ctx(&s->read_hash);
609 ssl_clear_hash_ctx(&s->write_hash);
611 if (s->cert != NULL) ssl_cert_free(s->cert);
612 /* Free up if allocated */
614 #ifndef OPENSSL_NO_TLSEXT
615 if (s->tlsext_hostname)
616 OPENSSL_free(s->tlsext_hostname);
617 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
618 #ifndef OPENSSL_NO_EC
619 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
620 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
621 #endif /* OPENSSL_NO_EC */
622 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input);
623 if (s->tlsext_ocsp_exts)
624 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
625 X509_EXTENSION_free);
626 if (s->tlsext_ocsp_ids)
627 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
628 if (s->tlsext_ocsp_resp)
629 OPENSSL_free(s->tlsext_ocsp_resp);
630 if (s->alpn_client_proto_list)
631 OPENSSL_free(s->alpn_client_proto_list);
634 if (s->client_CA != NULL)
635 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
637 if (s->method != NULL) s->method->ssl_free(s);
639 if (s->ctx) SSL_CTX_free(s->ctx);
641 #ifndef OPENSSL_NO_KRB5
642 if (s->kssl_ctx != NULL)
643 kssl_ctx_free(s->kssl_ctx);
644 #endif /* OPENSSL_NO_KRB5 */
646 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
647 if (s->next_proto_negotiated)
648 OPENSSL_free(s->next_proto_negotiated);
651 if (s->srtp_profiles)
652 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
657 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
659 /* If the output buffering BIO is still in place, remove it
663 if (s->wbio == s->bbio)
665 s->wbio=s->wbio->next_bio;
666 s->bbio->next_bio=NULL;
669 if ((s->rbio != NULL) && (s->rbio != rbio))
670 BIO_free_all(s->rbio);
671 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
672 BIO_free_all(s->wbio);
677 BIO *SSL_get_rbio(const SSL *s)
680 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());
722 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
725 BIO_set_fd(bio,fd,BIO_NOCLOSE);
726 SSL_set_bio(s,bio,bio);
732 int SSL_set_wfd(SSL *s,int fd)
737 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
738 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
740 bio=BIO_new(BIO_s_socket());
743 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
744 BIO_set_fd(bio,fd,BIO_NOCLOSE);
745 SSL_set_bio(s,SSL_get_rbio(s),bio);
748 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
754 int SSL_set_rfd(SSL *s,int fd)
759 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
760 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
762 bio=BIO_new(BIO_s_socket());
766 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
769 BIO_set_fd(bio,fd,BIO_NOCLOSE);
770 SSL_set_bio(s,bio,SSL_get_wbio(s));
773 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
781 /* return length of latest Finished message we sent, copy to 'buf' */
782 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)
803 ret = s->s3->tmp.peer_finish_md_len;
806 memcpy(buf, s->s3->tmp.peer_finish_md, count);
812 int SSL_get_verify_mode(const SSL *s)
814 return(s->verify_mode);
817 int SSL_get_verify_depth(const SSL *s)
819 return X509_VERIFY_PARAM_get_depth(s->param);
822 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
824 return(s->verify_callback);
827 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
829 return(ctx->verify_mode);
832 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
834 return X509_VERIFY_PARAM_get_depth(ctx->param);
837 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
839 return(ctx->default_verify_callback);
842 void SSL_set_verify(SSL *s,int mode,
843 int (*callback)(int ok,X509_STORE_CTX *ctx))
846 if (callback != NULL)
847 s->verify_callback=callback;
850 void SSL_set_verify_depth(SSL *s,int depth)
852 X509_VERIFY_PARAM_set_depth(s->param, depth);
855 void SSL_set_read_ahead(SSL *s,int yes)
860 int SSL_get_read_ahead(const SSL *s)
862 return(s->read_ahead);
865 int SSL_pending(const SSL *s)
867 /* SSL_pending cannot work properly if read-ahead is enabled
868 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
869 * and it is impossible to fix since SSL_pending cannot report
870 * errors that may be observed while scanning the new data.
871 * (Note that SSL_pending() is often used as a boolean value,
872 * so we'd better not return -1.)
874 return(s->method->ssl_pending(s));
877 X509 *SSL_get_peer_certificate(const SSL *s)
881 if ((s == NULL) || (s->session == NULL))
886 if (r == NULL) return(r);
888 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
893 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
897 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
900 r=s->session->sess_cert->cert_chain;
902 /* If we are a client, cert_chain includes the peer's own
903 * certificate; if we are a server, it does not. */
908 /* Now in theory, since the calling process own 't' it should be safe to
909 * modify. We need to be able to read f without being hassled */
910 void SSL_copy_session_id(SSL *t,const SSL *f)
914 /* Do we need to to SSL locking? */
915 SSL_set_session(t,SSL_get_session(f));
917 /* what if we are setup as SSLv2 but want to talk SSLv3 or
919 if (t->method != f->method)
921 t->method->ssl_free(t); /* cleanup current */
922 t->method=f->method; /* change method */
923 t->method->ssl_new(t); /* setup new */
929 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
934 if (tmp != NULL) ssl_cert_free(tmp);
935 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)
941 if ( (ctx == NULL) ||
942 (ctx->cert == NULL) ||
943 (ctx->cert->key->x509 == NULL))
945 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
948 if (ctx->cert->key->privatekey == NULL)
950 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
953 return(X509_check_private_key(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)
961 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
964 if (ssl->cert == NULL)
966 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
969 if (ssl->cert->key->x509 == NULL)
971 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
974 if (ssl->cert->key->privatekey == NULL)
976 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
979 return(X509_check_private_key(ssl->cert->key->x509,
980 ssl->cert->key->privatekey));
983 int SSL_accept(SSL *s)
985 if (s->handshake_func == 0)
986 /* Not properly initialized yet */
987 SSL_set_accept_state(s);
989 return(s->method->ssl_accept(s));
992 int SSL_connect(SSL *s)
994 if (s->handshake_func == 0)
995 /* Not properly initialized yet */
996 SSL_set_connect_state(s);
998 return(s->method->ssl_connect(s));
1001 long SSL_get_default_timeout(const SSL *s)
1003 return(s->method->get_timeout());
1006 int SSL_read(SSL *s,void *buf,int num)
1008 if (s->handshake_func == 0)
1010 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1014 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
1016 s->rwstate=SSL_NOTHING;
1019 return(s->method->ssl_read(s,buf,num));
1022 int SSL_peek(SSL *s,void *buf,int num)
1024 if (s->handshake_func == 0)
1026 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1030 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
1034 return(s->method->ssl_peek(s,buf,num));
1037 int SSL_write(SSL *s,const void *buf,int num)
1039 if (s->handshake_func == 0)
1041 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1045 if (s->shutdown & SSL_SENT_SHUTDOWN)
1047 s->rwstate=SSL_NOTHING;
1048 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
1051 return(s->method->ssl_write(s,buf,num));
1054 int SSL_shutdown(SSL *s)
1056 /* Note that this function behaves differently from what one might
1057 * expect. Return values are 0 for no success (yet),
1058 * 1 for success; but calling it once is usually not enough,
1059 * even if blocking I/O is used (see ssl3_shutdown).
1062 if (s->handshake_func == 0)
1064 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1068 if ((s != NULL) && !SSL_in_init(s))
1069 return(s->method->ssl_shutdown(s));
1074 int SSL_renegotiate(SSL *s)
1076 if (s->renegotiate == 0)
1081 return(s->method->ssl_renegotiate(s));
1084 int SSL_renegotiate_abbreviated(SSL *s)
1086 if (s->renegotiate == 0)
1091 return(s->method->ssl_renegotiate(s));
1094 int SSL_renegotiate_pending(SSL *s)
1096 /* becomes true when negotiation is requested;
1097 * false again once a handshake has finished */
1098 return (s->renegotiate != 0);
1101 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1107 case SSL_CTRL_GET_READ_AHEAD:
1108 return(s->read_ahead);
1109 case SSL_CTRL_SET_READ_AHEAD:
1114 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1115 s->msg_callback_arg = parg;
1118 case SSL_CTRL_OPTIONS:
1119 return(s->options|=larg);
1120 case SSL_CTRL_CLEAR_OPTIONS:
1121 return(s->options&=~larg);
1123 return(s->mode|=larg);
1124 case SSL_CTRL_CLEAR_MODE:
1125 return(s->mode &=~larg);
1126 case SSL_CTRL_GET_MAX_CERT_LIST:
1127 return(s->max_cert_list);
1128 case SSL_CTRL_SET_MAX_CERT_LIST:
1130 s->max_cert_list=larg;
1132 case SSL_CTRL_SET_MTU:
1133 #ifndef OPENSSL_NO_DTLS1
1134 if (larg < (long)dtls1_min_mtu())
1144 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1145 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1147 s->max_send_fragment = larg;
1149 case SSL_CTRL_GET_RI_SUPPORT:
1151 return s->s3->send_connection_binding;
1153 case SSL_CTRL_CERT_FLAGS:
1154 return(s->cert->cert_flags|=larg);
1155 case SSL_CTRL_CLEAR_CERT_FLAGS:
1156 return(s->cert->cert_flags &=~larg);
1158 case SSL_CTRL_GET_RAW_CIPHERLIST:
1161 if (s->cert->ciphers_raw == NULL)
1163 *(unsigned char **)parg = s->cert->ciphers_raw;
1164 return (int)s->cert->ciphers_rawlen;
1167 return ssl_put_cipher_by_char(s,NULL,NULL);
1169 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1173 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1177 case SSL_CTRL_SET_MSG_CALLBACK:
1178 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1182 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1186 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1188 return ctx->sessions;
1191 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1194 /* For some cases with ctx == NULL perform syntax checks */
1199 #ifndef OPENSSL_NO_EC
1200 case SSL_CTRL_SET_CURVES_LIST:
1201 return tls1_set_curves_list(NULL, NULL, parg);
1203 case SSL_CTRL_SET_SIGALGS_LIST:
1204 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1205 return tls1_set_sigalgs_list(NULL, parg, 0);
1213 case SSL_CTRL_GET_READ_AHEAD:
1214 return(ctx->read_ahead);
1215 case SSL_CTRL_SET_READ_AHEAD:
1217 ctx->read_ahead=larg;
1220 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1221 ctx->msg_callback_arg = parg;
1224 case SSL_CTRL_GET_MAX_CERT_LIST:
1225 return(ctx->max_cert_list);
1226 case SSL_CTRL_SET_MAX_CERT_LIST:
1227 l=ctx->max_cert_list;
1228 ctx->max_cert_list=larg;
1231 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1232 l=ctx->session_cache_size;
1233 ctx->session_cache_size=larg;
1235 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1236 return(ctx->session_cache_size);
1237 case SSL_CTRL_SET_SESS_CACHE_MODE:
1238 l=ctx->session_cache_mode;
1239 ctx->session_cache_mode=larg;
1241 case SSL_CTRL_GET_SESS_CACHE_MODE:
1242 return(ctx->session_cache_mode);
1244 case SSL_CTRL_SESS_NUMBER:
1245 return(lh_SSL_SESSION_num_items(ctx->sessions));
1246 case SSL_CTRL_SESS_CONNECT:
1247 return(ctx->stats.sess_connect);
1248 case SSL_CTRL_SESS_CONNECT_GOOD:
1249 return(ctx->stats.sess_connect_good);
1250 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1251 return(ctx->stats.sess_connect_renegotiate);
1252 case SSL_CTRL_SESS_ACCEPT:
1253 return(ctx->stats.sess_accept);
1254 case SSL_CTRL_SESS_ACCEPT_GOOD:
1255 return(ctx->stats.sess_accept_good);
1256 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1257 return(ctx->stats.sess_accept_renegotiate);
1258 case SSL_CTRL_SESS_HIT:
1259 return(ctx->stats.sess_hit);
1260 case SSL_CTRL_SESS_CB_HIT:
1261 return(ctx->stats.sess_cb_hit);
1262 case SSL_CTRL_SESS_MISSES:
1263 return(ctx->stats.sess_miss);
1264 case SSL_CTRL_SESS_TIMEOUTS:
1265 return(ctx->stats.sess_timeout);
1266 case SSL_CTRL_SESS_CACHE_FULL:
1267 return(ctx->stats.sess_cache_full);
1268 case SSL_CTRL_OPTIONS:
1269 return(ctx->options|=larg);
1270 case SSL_CTRL_CLEAR_OPTIONS:
1271 return(ctx->options&=~larg);
1273 return(ctx->mode|=larg);
1274 case SSL_CTRL_CLEAR_MODE:
1275 return(ctx->mode&=~larg);
1276 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1277 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1279 ctx->max_send_fragment = larg;
1281 case SSL_CTRL_CERT_FLAGS:
1282 return(ctx->cert->cert_flags|=larg);
1283 case SSL_CTRL_CLEAR_CERT_FLAGS:
1284 return(ctx->cert->cert_flags &=~larg);
1286 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1290 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1294 case SSL_CTRL_SET_MSG_CALLBACK:
1295 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1299 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1303 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1311 return((l > 0)?1:-1);
1314 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1315 const SSL_CIPHER * const *bp)
1319 l=(*ap)->id-(*bp)->id;
1323 return((l > 0)?1:-1);
1326 /** return a STACK of the ciphers available for the SSL and in order of
1328 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1332 if (s->cipher_list != NULL)
1334 return(s->cipher_list);
1336 else if ((s->ctx != NULL) &&
1337 (s->ctx->cipher_list != NULL))
1339 return(s->ctx->cipher_list);
1345 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
1347 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
1349 ciphers = SSL_get_ciphers(s);
1352 ssl_set_client_disabled(s);
1353 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++)
1355 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1356 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1359 sk = sk_SSL_CIPHER_new_null();
1362 if (!sk_SSL_CIPHER_push(sk, c))
1364 sk_SSL_CIPHER_free(sk);
1372 /** return a STACK of the ciphers available for the SSL and in order of
1374 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1378 if (s->cipher_list_by_id != NULL)
1380 return(s->cipher_list_by_id);
1382 else if ((s->ctx != NULL) &&
1383 (s->ctx->cipher_list_by_id != NULL))
1385 return(s->ctx->cipher_list_by_id);
1391 /** The old interface to get the same thing as SSL_get_ciphers() */
1392 const char *SSL_get_cipher_list(const SSL *s,int n)
1395 STACK_OF(SSL_CIPHER) *sk;
1397 if (s == NULL) return(NULL);
1398 sk=SSL_get_ciphers(s);
1399 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1401 c=sk_SSL_CIPHER_value(sk,n);
1402 if (c == NULL) return(NULL);
1406 /** specify the ciphers to be used by default by the SSL_CTX */
1407 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1409 STACK_OF(SSL_CIPHER) *sk;
1411 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1412 &ctx->cipher_list_by_id,str, ctx->cert);
1413 /* ssl_create_cipher_list may return an empty stack if it
1414 * was unable to find a cipher matching the given rule string
1415 * (for example if the rule string specifies a cipher which
1416 * has been disabled). This is not an error as far as
1417 * ssl_create_cipher_list is concerned, and hence
1418 * ctx->cipher_list and ctx->cipher_list_by_id has been
1422 else if (sk_SSL_CIPHER_num(sk) == 0)
1424 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1430 /** specify the ciphers to be used by the SSL */
1431 int SSL_set_cipher_list(SSL *s,const char *str)
1433 STACK_OF(SSL_CIPHER) *sk;
1435 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1436 &s->cipher_list_by_id,str, s->cert);
1437 /* see comment in SSL_CTX_set_cipher_list */
1440 else if (sk_SSL_CIPHER_num(sk) == 0)
1442 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1448 /* works well for SSLv2, not so good for SSLv3 */
1449 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1452 STACK_OF(SSL_CIPHER) *sk;
1456 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1461 sk=s->session->ciphers;
1463 if (sk_SSL_CIPHER_num(sk) == 0)
1466 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1470 c=sk_SSL_CIPHER_value(sk,i);
1488 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1489 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1494 int no_scsv = s->renegotiate;
1495 /* Set disabled masks for this session */
1496 ssl_set_client_disabled(s);
1498 if (sk == NULL) return(0);
1501 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1503 c=sk_SSL_CIPHER_value(sk,i);
1504 /* Skip disabled ciphers */
1505 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1507 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1508 if (c->id == SSL3_CK_SCSV)
1516 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1519 /* If p == q, no ciphers and caller indicates an error. Otherwise
1520 * add SCSV if not renegotiating.
1522 if (p != q && !no_scsv)
1524 static SSL_CIPHER scsv =
1526 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1528 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1530 #ifdef OPENSSL_RI_DEBUG
1531 fprintf(stderr, "SCSV sent by client\n");
1538 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1539 STACK_OF(SSL_CIPHER) **skp)
1541 const SSL_CIPHER *c;
1542 STACK_OF(SSL_CIPHER) *sk;
1545 s->s3->send_connection_binding = 0;
1547 n=ssl_put_cipher_by_char(s,NULL,NULL);
1550 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1553 if ((skp == NULL) || (*skp == NULL))
1554 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1558 sk_SSL_CIPHER_zero(sk);
1561 if (s->cert->ciphers_raw)
1562 OPENSSL_free(s->cert->ciphers_raw);
1563 s->cert->ciphers_raw = BUF_memdup(p, num);
1564 if (s->cert->ciphers_raw == NULL)
1566 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1569 s->cert->ciphers_rawlen = (size_t)num;
1571 for (i=0; i<num; i+=n)
1573 /* Check for SCSV */
1574 if (s->s3 && (n != 3 || !p[0]) &&
1575 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1576 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1578 /* SCSV fatal if renegotiating */
1581 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1582 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1585 s->s3->send_connection_binding = 1;
1587 #ifdef OPENSSL_RI_DEBUG
1588 fprintf(stderr, "SCSV received by server\n");
1593 c=ssl_get_cipher_by_char(s,p);
1597 if (!sk_SSL_CIPHER_push(sk,c))
1599 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1609 if ((skp == NULL) || (*skp == NULL))
1610 sk_SSL_CIPHER_free(sk);
1615 #ifndef OPENSSL_NO_TLSEXT
1616 /** return a servername extension value if provided in Client Hello, or NULL.
1617 * So far, only host_name types are defined (RFC 3546).
1620 const char *SSL_get_servername(const SSL *s, const int type)
1622 if (type != TLSEXT_NAMETYPE_host_name)
1625 return s->session && !s->tlsext_hostname ?
1626 s->session->tlsext_hostname :
1630 int SSL_get_servername_type(const SSL *s)
1632 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1633 return TLSEXT_NAMETYPE_host_name;
1637 /* SSL_select_next_proto implements the standard protocol selection. It is
1638 * expected that this function is called from the callback set by
1639 * SSL_CTX_set_next_proto_select_cb.
1641 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
1642 * strings. The length byte itself is not included in the length. A byte
1643 * string of length 0 is invalid. No byte string may be truncated.
1645 * The current, but experimental algorithm for selecting the protocol is:
1647 * 1) If the server doesn't support NPN then this is indicated to the
1648 * callback. In this case, the client application has to abort the connection
1649 * or have a default application level protocol.
1651 * 2) If the server supports NPN, but advertises an empty list then the
1652 * client selects the first protcol in its list, but indicates via the
1653 * API that this fallback case was enacted.
1655 * 3) Otherwise, the client finds the first protocol in the server's list
1656 * that it supports and selects this protocol. This is because it's
1657 * assumed that the server has better information about which protocol
1658 * a client should use.
1660 * 4) If the client doesn't support any of the server's advertised
1661 * protocols, then this is treated the same as case 2.
1664 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
1665 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1667 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen, const unsigned char *server, unsigned int server_len, const unsigned char *client, unsigned int client_len)
1670 const unsigned char *result;
1671 int status = OPENSSL_NPN_UNSUPPORTED;
1673 /* For each protocol in server preference order, see if we support it. */
1674 for (i = 0; i < server_len; )
1676 for (j = 0; j < client_len; )
1678 if (server[i] == client[j] &&
1679 memcmp(&server[i+1], &client[j+1], server[i]) == 0)
1681 /* We found a match */
1682 result = &server[i];
1683 status = OPENSSL_NPN_NEGOTIATED;
1693 /* There's no overlap between our protocols and the server's list. */
1695 status = OPENSSL_NPN_NO_OVERLAP;
1698 *out = (unsigned char *) result + 1;
1699 *outlen = result[0];
1703 # ifndef OPENSSL_NO_NEXTPROTONEG
1704 /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's
1705 * requested protocol for this connection and returns 0. If the client didn't
1706 * request any protocol, then *data is set to NULL.
1708 * Note that the client can request any protocol it chooses. The value returned
1709 * from this function need not be a member of the list of supported protocols
1710 * provided by the callback.
1712 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len)
1714 *data = s->next_proto_negotiated;
1718 *len = s->next_proto_negotiated_len;
1722 /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
1723 * TLS server needs a list of supported protocols for Next Protocol
1724 * Negotiation. The returned list must be in wire format. The list is returned
1725 * by setting |out| to point to it and |outlen| to its length. This memory will
1726 * not be modified, but one should assume that the SSL* keeps a reference to
1729 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no
1730 * such extension will be included in the ServerHello. */
1731 void SSL_CTX_set_next_protos_advertised_cb(SSL_CTX *ctx, int (*cb) (SSL *ssl, const unsigned char **out, unsigned int *outlen, void *arg), void *arg)
1733 ctx->next_protos_advertised_cb = cb;
1734 ctx->next_protos_advertised_cb_arg = arg;
1737 /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1738 * client needs to select a protocol from the server's provided list. |out|
1739 * must be set to point to the selected protocol (which may be within |in|).
1740 * The length of the protocol name must be written into |outlen|. The server's
1741 * advertised protocols are provided in |in| and |inlen|. The callback can
1742 * assume that |in| is syntactically valid.
1744 * The client must select a protocol. It is fatal to the connection if this
1745 * callback returns a value other than SSL_TLSEXT_ERR_OK.
1747 void SSL_CTX_set_next_proto_select_cb(SSL_CTX *ctx, int (*cb) (SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg), void *arg)
1749 ctx->next_proto_select_cb = cb;
1750 ctx->next_proto_select_cb_arg = arg;
1754 int SSL_CTX_set_custom_cli_ext(SSL_CTX *ctx, unsigned short ext_type,
1755 custom_cli_ext_first_cb_fn fn1,
1756 custom_cli_ext_second_cb_fn fn2, void* arg)
1759 custom_cli_ext_record* record;
1761 /* Check for duplicates */
1762 for (i=0; i < ctx->custom_cli_ext_records_count; i++)
1763 if (ext_type == ctx->custom_cli_ext_records[i].ext_type)
1766 ctx->custom_cli_ext_records = OPENSSL_realloc(ctx->custom_cli_ext_records,
1767 (ctx->custom_cli_ext_records_count + 1) *
1768 sizeof(custom_cli_ext_record));
1769 if (!ctx->custom_cli_ext_records) {
1770 ctx->custom_cli_ext_records_count = 0;
1773 ctx->custom_cli_ext_records_count++;
1774 record = &ctx->custom_cli_ext_records[ctx->custom_cli_ext_records_count - 1];
1775 record->ext_type = ext_type;
1782 int SSL_CTX_set_custom_srv_ext(SSL_CTX *ctx, unsigned short ext_type,
1783 custom_srv_ext_first_cb_fn fn1,
1784 custom_srv_ext_second_cb_fn fn2, void* arg)
1787 custom_srv_ext_record* record;
1789 /* Check for duplicates */
1790 for (i=0; i < ctx->custom_srv_ext_records_count; i++)
1791 if (ext_type == ctx->custom_srv_ext_records[i].ext_type)
1794 ctx->custom_srv_ext_records = OPENSSL_realloc(ctx->custom_srv_ext_records,
1795 (ctx->custom_srv_ext_records_count + 1) *
1796 sizeof(custom_srv_ext_record));
1797 if (!ctx->custom_srv_ext_records) {
1798 ctx->custom_srv_ext_records_count = 0;
1801 ctx->custom_srv_ext_records_count++;
1802 record = &ctx->custom_srv_ext_records[ctx->custom_srv_ext_records_count - 1];
1803 record->ext_type = ext_type;
1810 /* SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1811 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1812 * length-prefixed strings).
1814 * Returns 0 on success. */
1815 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char* protos,
1816 unsigned protos_len)
1818 if (ctx->alpn_client_proto_list)
1819 OPENSSL_free(ctx->alpn_client_proto_list);
1821 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1822 if (!ctx->alpn_client_proto_list)
1824 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1825 ctx->alpn_client_proto_list_len = protos_len;
1830 /* SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1831 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1832 * length-prefixed strings).
1834 * Returns 0 on success. */
1835 int SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos,
1836 unsigned protos_len)
1838 if (ssl->alpn_client_proto_list)
1839 OPENSSL_free(ssl->alpn_client_proto_list);
1841 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1842 if (!ssl->alpn_client_proto_list)
1844 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1845 ssl->alpn_client_proto_list_len = protos_len;
1850 /* SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is called
1851 * during ClientHello processing in order to select an ALPN protocol from the
1852 * client's list of offered protocols. */
1853 void SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx,
1854 int (*cb) (SSL *ssl,
1855 const unsigned char **out,
1856 unsigned char *outlen,
1857 const unsigned char *in,
1862 ctx->alpn_select_cb = cb;
1863 ctx->alpn_select_cb_arg = arg;
1866 /* SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
1867 * On return it sets |*data| to point to |*len| bytes of protocol name (not
1868 * including the leading length-prefix byte). If the server didn't respond with
1869 * a negotiated protocol then |*len| will be zero. */
1870 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1875 *data = ssl->s3->alpn_selected;
1879 *len = ssl->s3->alpn_selected_len;
1882 #endif /* !OPENSSL_NO_TLSEXT */
1884 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1885 const char *label, size_t llen, const unsigned char *p, size_t plen,
1888 if (s->version < TLS1_VERSION)
1891 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1896 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1901 ((unsigned int) a->session_id[0] )|
1902 ((unsigned int) a->session_id[1]<< 8L)|
1903 ((unsigned long)a->session_id[2]<<16L)|
1904 ((unsigned long)a->session_id[3]<<24L);
1908 /* NB: If this function (or indeed the hash function which uses a sort of
1909 * coarser function than this one) is changed, ensure
1910 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1911 * able to construct an SSL_SESSION that will collide with any existing session
1912 * with a matching session ID. */
1913 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1915 if (a->ssl_version != b->ssl_version)
1917 if (a->session_id_length != b->session_id_length)
1919 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1922 /* These wrapper functions should remain rather than redeclaring
1923 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1924 * variable. The reason is that the functions aren't static, they're exposed via
1926 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1927 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1929 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1935 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1940 if (FIPS_mode() && (meth->version < TLS1_VERSION))
1942 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1947 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1949 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1952 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1956 memset(ret,0,sizeof(SSL_CTX));
1960 ret->cert_store=NULL;
1961 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1962 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1963 ret->session_cache_head=NULL;
1964 ret->session_cache_tail=NULL;
1966 /* We take the system default */
1967 ret->session_timeout=meth->get_timeout();
1969 ret->new_session_cb=0;
1970 ret->remove_session_cb=0;
1971 ret->get_session_cb=0;
1972 ret->generate_session_id=0;
1974 memset((char *)&ret->stats,0,sizeof(ret->stats));
1977 ret->quiet_shutdown=0;
1979 /* ret->cipher=NULL;*/
1980 /* ret->s2->challenge=NULL;
1981 ret->master_key=NULL;
1983 ret->s2->conn_id=NULL; */
1985 ret->info_callback=NULL;
1987 ret->app_verify_callback=0;
1988 ret->app_verify_arg=NULL;
1990 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1992 ret->msg_callback=0;
1993 ret->msg_callback_arg=NULL;
1994 ret->verify_mode=SSL_VERIFY_NONE;
1996 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1998 ret->sid_ctx_length=0;
1999 ret->default_verify_callback=NULL;
2000 if ((ret->cert=ssl_cert_new()) == NULL)
2003 ret->default_passwd_callback=0;
2004 ret->default_passwd_callback_userdata=NULL;
2005 ret->client_cert_cb=0;
2006 ret->app_gen_cookie_cb=0;
2007 ret->app_verify_cookie_cb=0;
2009 ret->sessions=lh_SSL_SESSION_new();
2010 if (ret->sessions == NULL) goto err;
2011 ret->cert_store=X509_STORE_new();
2012 if (ret->cert_store == NULL) goto err;
2014 ssl_create_cipher_list(ret->method,
2015 &ret->cipher_list,&ret->cipher_list_by_id,
2016 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST, ret->cert);
2017 if (ret->cipher_list == NULL
2018 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
2020 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
2024 ret->param = X509_VERIFY_PARAM_new();
2028 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
2030 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
2033 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
2035 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2038 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
2040 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2044 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
2047 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
2049 ret->extra_certs=NULL;
2050 /* No compression for DTLS */
2051 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2052 ret->comp_methods=SSL_COMP_get_compression_methods();
2054 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2056 #ifndef OPENSSL_NO_TLSEXT
2057 ret->tlsext_servername_callback = 0;
2058 ret->tlsext_servername_arg = NULL;
2059 /* Setup RFC4507 ticket keys */
2060 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
2061 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
2062 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
2063 ret->options |= SSL_OP_NO_TICKET;
2065 ret->tlsext_status_cb = 0;
2066 ret->tlsext_status_arg = NULL;
2068 # ifndef OPENSSL_NO_NEXTPROTONEG
2069 ret->next_protos_advertised_cb = 0;
2070 ret->next_proto_select_cb = 0;
2073 #ifndef OPENSSL_NO_PSK
2074 ret->psk_identity_hint=NULL;
2075 ret->psk_client_callback=NULL;
2076 ret->psk_server_callback=NULL;
2078 #ifndef OPENSSL_NO_SRP
2079 SSL_CTX_SRP_CTX_init(ret);
2081 ret->custom_cli_ext_records = NULL;
2082 ret->custom_cli_ext_records_count = 0;
2083 ret->custom_srv_ext_records = NULL;
2084 ret->custom_srv_ext_records_count = 0;
2085 #ifndef OPENSSL_NO_BUF_FREELISTS
2086 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
2087 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
2088 if (!ret->rbuf_freelist)
2090 ret->rbuf_freelist->chunklen = 0;
2091 ret->rbuf_freelist->len = 0;
2092 ret->rbuf_freelist->head = NULL;
2093 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
2094 if (!ret->wbuf_freelist)
2096 OPENSSL_free(ret->rbuf_freelist);
2099 ret->wbuf_freelist->chunklen = 0;
2100 ret->wbuf_freelist->len = 0;
2101 ret->wbuf_freelist->head = NULL;
2103 #ifndef OPENSSL_NO_ENGINE
2104 ret->client_cert_engine = NULL;
2105 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2106 #define eng_strx(x) #x
2107 #define eng_str(x) eng_strx(x)
2108 /* Use specific client engine automatically... ignore errors */
2111 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2115 ENGINE_load_builtin_engines();
2116 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2118 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2123 /* Default is to connect to non-RI servers. When RI is more widely
2124 * deployed might change this.
2126 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2130 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
2132 if (ret != NULL) SSL_CTX_free(ret);
2137 static void SSL_COMP_free(SSL_COMP *comp)
2138 { OPENSSL_free(comp); }
2141 #ifndef OPENSSL_NO_BUF_FREELISTS
2143 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
2145 SSL3_BUF_FREELIST_ENTRY *ent, *next;
2146 for (ent = list->head; ent; ent = next)
2155 void SSL_CTX_free(SSL_CTX *a)
2159 if (a == NULL) return;
2161 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
2163 REF_PRINT("SSL_CTX",a);
2169 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
2175 X509_VERIFY_PARAM_free(a->param);
2178 * Free internal session cache. However: the remove_cb() may reference
2179 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2180 * after the sessions were flushed.
2181 * As the ex_data handling routines might also touch the session cache,
2182 * the most secure solution seems to be: empty (flush) the cache, then
2183 * free ex_data, then finally free the cache.
2184 * (See ticket [openssl.org #212].)
2186 if (a->sessions != NULL)
2187 SSL_CTX_flush_sessions(a,0);
2189 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2191 if (a->sessions != NULL)
2192 lh_SSL_SESSION_free(a->sessions);
2194 if (a->cert_store != NULL)
2195 X509_STORE_free(a->cert_store);
2196 if (a->cipher_list != NULL)
2197 sk_SSL_CIPHER_free(a->cipher_list);
2198 if (a->cipher_list_by_id != NULL)
2199 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2200 if (a->cert != NULL)
2201 ssl_cert_free(a->cert);
2202 if (a->client_CA != NULL)
2203 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
2204 if (a->extra_certs != NULL)
2205 sk_X509_pop_free(a->extra_certs,X509_free);
2206 #if 0 /* This should never be done, since it removes a global database */
2207 if (a->comp_methods != NULL)
2208 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
2210 a->comp_methods = NULL;
2213 if (a->srtp_profiles)
2214 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2216 #ifndef OPENSSL_NO_PSK
2217 if (a->psk_identity_hint)
2218 OPENSSL_free(a->psk_identity_hint);
2220 #ifndef OPENSSL_NO_SRP
2221 SSL_CTX_SRP_CTX_free(a);
2223 #ifndef OPENSSL_NO_TLSEXT
2224 OPENSSL_free(a->custom_cli_ext_records);
2225 OPENSSL_free(a->custom_srv_ext_records);
2227 #ifndef OPENSSL_NO_ENGINE
2228 if (a->client_cert_engine)
2229 ENGINE_finish(a->client_cert_engine);
2232 #ifndef OPENSSL_NO_BUF_FREELISTS
2233 if (a->wbuf_freelist)
2234 ssl_buf_freelist_free(a->wbuf_freelist);
2235 if (a->rbuf_freelist)
2236 ssl_buf_freelist_free(a->rbuf_freelist);
2238 #ifndef OPENSSL_NO_TLSEXT
2239 # ifndef OPENSSL_NO_EC
2240 if (a->tlsext_ecpointformatlist)
2241 OPENSSL_free(a->tlsext_ecpointformatlist);
2242 if (a->tlsext_ellipticcurvelist)
2243 OPENSSL_free(a->tlsext_ellipticcurvelist);
2244 # endif /* OPENSSL_NO_EC */
2245 if (a->alpn_client_proto_list != NULL)
2246 OPENSSL_free(a->alpn_client_proto_list);
2252 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2254 ctx->default_passwd_callback=cb;
2257 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
2259 ctx->default_passwd_callback_userdata=u;
2262 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
2264 ctx->app_verify_callback=cb;
2265 ctx->app_verify_arg=arg;
2268 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
2270 ctx->verify_mode=mode;
2271 ctx->default_verify_callback=cb;
2274 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
2276 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2279 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb)(SSL *ssl, void *arg), void *arg)
2281 ssl_cert_set_cert_cb(c->cert, cb, arg);
2284 void SSL_set_cert_cb(SSL *s, int (*cb)(SSL *ssl, void *arg), void *arg)
2286 ssl_cert_set_cert_cb(s->cert, cb, arg);
2289 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2292 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
2293 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
2294 int rsa_tmp_export,dh_tmp_export,kl;
2295 unsigned long mask_k,mask_a,emask_k,emask_a;
2296 #ifndef OPENSSL_NO_ECDSA
2297 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2299 #ifndef OPENSSL_NO_ECDH
2300 int have_ecdh_tmp, ecdh_ok;
2302 #ifndef OPENSSL_NO_EC
2304 EVP_PKEY *ecc_pkey = NULL;
2305 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2307 if (c == NULL) return;
2309 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
2311 #ifndef OPENSSL_NO_RSA
2312 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2313 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
2314 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
2316 rsa_tmp=rsa_tmp_export=0;
2318 #ifndef OPENSSL_NO_DH
2319 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2320 dh_tmp_export= !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2321 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
2323 dh_tmp=dh_tmp_export=0;
2326 #ifndef OPENSSL_NO_ECDH
2327 have_ecdh_tmp=(c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2329 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
2330 rsa_enc= cpk->valid_flags & CERT_PKEY_VALID;
2331 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2332 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2333 rsa_sign= cpk->valid_flags & CERT_PKEY_SIGN;
2334 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2335 dsa_sign= cpk->valid_flags & CERT_PKEY_SIGN;
2336 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
2337 dh_rsa= cpk->valid_flags & CERT_PKEY_VALID;
2338 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2339 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
2340 /* FIX THIS EAY EAY EAY */
2341 dh_dsa= cpk->valid_flags & CERT_PKEY_VALID;
2342 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2343 cpk= &(c->pkeys[SSL_PKEY_ECC]);
2344 #ifndef OPENSSL_NO_EC
2345 have_ecc_cert= cpk->valid_flags & CERT_PKEY_VALID;
2355 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2356 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
2357 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
2360 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2361 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2362 mask_k |= SSL_kGOST;
2363 mask_a |= SSL_aGOST01;
2365 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2366 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2367 mask_k |= SSL_kGOST;
2368 mask_a |= SSL_aGOST94;
2371 if (rsa_enc || (rsa_tmp && rsa_sign))
2373 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2377 /* The match needs to be both kDHE and aRSA or aDSA, so don't worry */
2378 if ( (dh_tmp || dh_rsa || dh_dsa) &&
2379 (rsa_enc || rsa_sign || dsa_sign))
2381 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2382 (rsa_enc || rsa_sign || dsa_sign))
2392 if (dh_rsa) mask_k|=SSL_kDHr;
2393 if (dh_rsa_export) emask_k|=SSL_kDHr;
2395 if (dh_dsa) mask_k|=SSL_kDHd;
2396 if (dh_dsa_export) emask_k|=SSL_kDHd;
2398 if (emask_k & (SSL_kDHr|SSL_kDHd))
2401 if (rsa_enc || rsa_sign)
2416 #ifndef OPENSSL_NO_KRB5
2423 /* An ECC certificate may be usable for ECDH and/or
2424 * ECDSA cipher suites depending on the key usage extension.
2426 #ifndef OPENSSL_NO_EC
2429 cpk = &c->pkeys[SSL_PKEY_ECC];
2431 /* This call populates extension flags (ex_flags) */
2432 X509_check_purpose(x, -1, 0);
2433 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2434 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2435 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2436 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2437 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2439 ecc_pkey = X509_get_pubkey(x);
2440 ecc_pkey_size = (ecc_pkey != NULL) ?
2441 EVP_PKEY_bits(ecc_pkey) : 0;
2442 EVP_PKEY_free(ecc_pkey);
2443 if ((x->sig_alg) && (x->sig_alg->algorithm))
2445 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2446 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2448 #ifndef OPENSSL_NO_ECDH
2452 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa)
2456 if (ecc_pkey_size <= 163)
2458 emask_k|=SSL_kECDHr;
2463 if (pk_nid == NID_X9_62_id_ecPublicKey)
2467 if (ecc_pkey_size <= 163)
2469 emask_k|=SSL_kECDHe;
2475 #ifndef OPENSSL_NO_ECDSA
2479 emask_a|=SSL_aECDSA;
2485 #ifndef OPENSSL_NO_ECDH
2489 emask_k|=SSL_kECDHE;
2493 #ifndef OPENSSL_NO_PSK
2496 emask_k |= SSL_kPSK;
2497 emask_a |= SSL_aPSK;
2502 c->export_mask_k=emask_k;
2503 c->export_mask_a=emask_a;
2507 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2508 #define ku_reject(x, usage) \
2509 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2511 #ifndef OPENSSL_NO_EC
2513 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2515 unsigned long alg_k, alg_a;
2516 EVP_PKEY *pkey = NULL;
2518 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2519 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2521 alg_k = cs->algorithm_mkey;
2522 alg_a = cs->algorithm_auth;
2524 if (SSL_C_IS_EXPORT(cs))
2526 /* ECDH key length in export ciphers must be <= 163 bits */
2527 pkey = X509_get_pubkey(x);
2528 if (pkey == NULL) return 0;
2529 keysize = EVP_PKEY_bits(pkey);
2530 EVP_PKEY_free(pkey);
2531 if (keysize > 163) return 0;
2534 /* This call populates the ex_flags field correctly */
2535 X509_check_purpose(x, -1, 0);
2536 if ((x->sig_alg) && (x->sig_alg->algorithm))
2538 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2539 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2541 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2543 /* key usage, if present, must allow key agreement */
2544 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2546 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2549 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION)
2551 /* signature alg must be ECDSA */
2552 if (pk_nid != NID_X9_62_id_ecPublicKey)
2554 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2558 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION)
2560 /* signature alg must be RSA */
2562 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa)
2564 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2569 if (alg_a & SSL_aECDSA)
2571 /* key usage, if present, must allow signing */
2572 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2574 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2579 return 1; /* all checks are ok */
2584 static int ssl_get_server_cert_index(const SSL *s)
2587 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2588 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2589 idx = SSL_PKEY_RSA_SIGN;
2591 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX,ERR_R_INTERNAL_ERROR);
2595 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2601 if (!s->s3 || !s->s3->tmp.new_cipher)
2603 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2605 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2606 /* Broken protocol test: return last used certificate: which may
2607 * mismatch the one expected.
2609 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2613 i = ssl_get_server_cert_index(s);
2615 /* This may or may not be an error. */
2620 return &c->pkeys[i];
2623 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd)
2625 unsigned long alg_a;
2629 alg_a = cipher->algorithm_auth;
2632 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2633 /* Broken protocol test: use last key: which may
2634 * mismatch the one expected.
2636 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2637 idx = c->key - c->pkeys;
2641 if ((alg_a & SSL_aDSS) &&
2642 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2643 idx = SSL_PKEY_DSA_SIGN;
2644 else if (alg_a & SSL_aRSA)
2646 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2647 idx = SSL_PKEY_RSA_SIGN;
2648 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2649 idx = SSL_PKEY_RSA_ENC;
2651 else if ((alg_a & SSL_aECDSA) &&
2652 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2656 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2660 *pmd = c->pkeys[idx].digest;
2661 return c->pkeys[idx].privatekey;
2664 #ifndef OPENSSL_NO_TLSEXT
2665 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2666 size_t *serverinfo_length)
2670 *serverinfo_length = 0;
2673 i = ssl_get_server_cert_index(s);
2677 if (c->pkeys[i].serverinfo == NULL)
2680 *serverinfo = c->pkeys[i].serverinfo;
2681 *serverinfo_length = c->pkeys[i].serverinfo_length;
2686 void ssl_update_cache(SSL *s,int mode)
2690 /* If the session_id_length is 0, we are not supposed to cache it,
2691 * and it would be rather hard to do anyway :-) */
2692 if (s->session->session_id_length == 0) return;
2694 i=s->session_ctx->session_cache_mode;
2695 if ((i & mode) && (!s->hit)
2696 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2697 || SSL_CTX_add_session(s->session_ctx,s->session))
2698 && (s->session_ctx->new_session_cb != NULL))
2700 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2701 if (!s->session_ctx->new_session_cb(s,s->session))
2702 SSL_SESSION_free(s->session);
2705 /* auto flush every 255 connections */
2706 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2707 ((i & mode) == mode))
2709 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2710 ?s->session_ctx->stats.sess_connect_good
2711 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2713 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2718 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2723 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2728 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2733 if (s->method != meth)
2735 if (s->handshake_func != NULL)
2736 conn=(s->handshake_func == s->method->ssl_connect);
2738 if (s->method->version == meth->version)
2742 s->method->ssl_free(s);
2744 ret=s->method->ssl_new(s);
2748 s->handshake_func=meth->ssl_connect;
2750 s->handshake_func=meth->ssl_accept;
2755 int SSL_get_error(const SSL *s,int i)
2761 if (i > 0) return(SSL_ERROR_NONE);
2763 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2764 * etc, where we do encode the error */
2765 if ((l=ERR_peek_error()) != 0)
2767 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2768 return(SSL_ERROR_SYSCALL);
2770 return(SSL_ERROR_SSL);
2773 if ((i < 0) && SSL_want_read(s))
2775 bio=SSL_get_rbio(s);
2776 if (BIO_should_read(bio))
2777 return(SSL_ERROR_WANT_READ);
2778 else if (BIO_should_write(bio))
2779 /* This one doesn't make too much sense ... We never try
2780 * to write to the rbio, and an application program where
2781 * rbio and wbio are separate couldn't even know what it
2783 * However if we ever set s->rwstate incorrectly
2784 * (so that we have SSL_want_read(s) instead of
2785 * SSL_want_write(s)) and rbio and wbio *are* the same,
2786 * this test works around that bug; so it might be safer
2788 return(SSL_ERROR_WANT_WRITE);
2789 else if (BIO_should_io_special(bio))
2791 reason=BIO_get_retry_reason(bio);
2792 if (reason == BIO_RR_CONNECT)
2793 return(SSL_ERROR_WANT_CONNECT);
2794 else if (reason == BIO_RR_ACCEPT)
2795 return(SSL_ERROR_WANT_ACCEPT);
2797 return(SSL_ERROR_SYSCALL); /* unknown */
2801 if ((i < 0) && SSL_want_write(s))
2803 bio=SSL_get_wbio(s);
2804 if (BIO_should_write(bio))
2805 return(SSL_ERROR_WANT_WRITE);
2806 else if (BIO_should_read(bio))
2807 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2808 return(SSL_ERROR_WANT_READ);
2809 else if (BIO_should_io_special(bio))
2811 reason=BIO_get_retry_reason(bio);
2812 if (reason == BIO_RR_CONNECT)
2813 return(SSL_ERROR_WANT_CONNECT);
2814 else if (reason == BIO_RR_ACCEPT)
2815 return(SSL_ERROR_WANT_ACCEPT);
2817 return(SSL_ERROR_SYSCALL);
2820 if ((i < 0) && SSL_want_x509_lookup(s))
2822 return(SSL_ERROR_WANT_X509_LOOKUP);
2827 if (s->version == SSL2_VERSION)
2829 /* assume it is the socket being closed */
2830 return(SSL_ERROR_ZERO_RETURN);
2834 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2835 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2836 return(SSL_ERROR_ZERO_RETURN);
2839 return(SSL_ERROR_SYSCALL);
2842 int SSL_do_handshake(SSL *s)
2846 if (s->handshake_func == NULL)
2848 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2852 s->method->ssl_renegotiate_check(s);
2854 if (SSL_in_init(s) || SSL_in_before(s))
2856 ret=s->handshake_func(s);
2861 /* For the next 2 functions, SSL_clear() sets shutdown and so
2862 * one of these calls will reset it */
2863 void SSL_set_accept_state(SSL *s)
2867 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2868 s->handshake_func=s->method->ssl_accept;
2869 /* clear the current cipher */
2870 ssl_clear_cipher_ctx(s);
2871 ssl_clear_hash_ctx(&s->read_hash);
2872 ssl_clear_hash_ctx(&s->write_hash);
2875 void SSL_set_connect_state(SSL *s)
2879 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2880 s->handshake_func=s->method->ssl_connect;
2881 /* clear the current cipher */
2882 ssl_clear_cipher_ctx(s);
2883 ssl_clear_hash_ctx(&s->read_hash);
2884 ssl_clear_hash_ctx(&s->write_hash);
2887 int ssl_undefined_function(SSL *s)
2889 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2893 int ssl_undefined_void_function(void)
2895 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2899 int ssl_undefined_const_function(const SSL *s)
2901 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2905 SSL_METHOD *ssl_bad_method(int ver)
2907 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2911 const char *SSL_get_version(const SSL *s)
2913 if (s->version == TLS1_2_VERSION)
2915 else if (s->version == TLS1_1_VERSION)
2917 else if (s->version == TLS1_VERSION)
2919 else if (s->version == SSL3_VERSION)
2921 else if (s->version == SSL2_VERSION)
2927 SSL *SSL_dup(SSL *s)
2929 STACK_OF(X509_NAME) *sk;
2934 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2937 ret->version = s->version;
2938 ret->type = s->type;
2939 ret->method = s->method;
2941 if (s->session != NULL)
2943 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2944 SSL_copy_session_id(ret,s);
2948 /* No session has been established yet, so we have to expect
2949 * that s->cert or ret->cert will be changed later --
2950 * they should not both point to the same object,
2951 * and thus we can't use SSL_copy_session_id. */
2953 ret->method->ssl_free(ret);
2954 ret->method = s->method;
2955 ret->method->ssl_new(ret);
2957 if (s->cert != NULL)
2959 if (ret->cert != NULL)
2961 ssl_cert_free(ret->cert);
2963 ret->cert = ssl_cert_dup(s->cert);
2964 if (ret->cert == NULL)
2968 SSL_set_session_id_context(ret,
2969 s->sid_ctx, s->sid_ctx_length);
2972 ret->options=s->options;
2974 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2975 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2976 ret->msg_callback = s->msg_callback;
2977 ret->msg_callback_arg = s->msg_callback_arg;
2978 SSL_set_verify(ret,SSL_get_verify_mode(s),
2979 SSL_get_verify_callback(s));
2980 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2981 ret->generate_session_id = s->generate_session_id;
2983 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2985 ret->debug=s->debug;
2987 /* copy app data, a little dangerous perhaps */
2988 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2991 /* setup rbio, and wbio */
2992 if (s->rbio != NULL)
2994 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2997 if (s->wbio != NULL)
2999 if (s->wbio != s->rbio)
3001 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
3005 ret->wbio=ret->rbio;
3007 ret->rwstate = s->rwstate;
3008 ret->in_handshake = s->in_handshake;
3009 ret->handshake_func = s->handshake_func;
3010 ret->server = s->server;
3011 ret->renegotiate = s->renegotiate;
3012 ret->new_session = s->new_session;
3013 ret->quiet_shutdown = s->quiet_shutdown;
3014 ret->shutdown=s->shutdown;
3015 ret->state=s->state; /* SSL_dup does not really work at any state, though */
3016 ret->rstate=s->rstate;
3017 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
3020 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3022 /* dup the cipher_list and cipher_list_by_id stacks */
3023 if (s->cipher_list != NULL)
3025 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3028 if (s->cipher_list_by_id != NULL)
3029 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3033 /* Dup the client_CA list */
3034 if (s->client_CA != NULL)
3036 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
3038 for (i=0; i<sk_X509_NAME_num(sk); i++)
3040 xn=sk_X509_NAME_value(sk,i);
3041 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
3052 if (ret != NULL) SSL_free(ret);
3058 void ssl_clear_cipher_ctx(SSL *s)
3060 if (s->enc_read_ctx != NULL)
3062 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
3063 OPENSSL_free(s->enc_read_ctx);
3064 s->enc_read_ctx=NULL;
3066 if (s->enc_write_ctx != NULL)
3068 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
3069 OPENSSL_free(s->enc_write_ctx);
3070 s->enc_write_ctx=NULL;
3072 #ifndef OPENSSL_NO_COMP
3073 if (s->expand != NULL)
3075 COMP_CTX_free(s->expand);
3078 if (s->compress != NULL)
3080 COMP_CTX_free(s->compress);
3086 X509 *SSL_get_certificate(const SSL *s)
3088 if (s->cert != NULL)
3089 return(s->cert->key->x509);
3094 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3096 if (s->cert != NULL)
3097 return(s->cert->key->privatekey);
3102 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3104 if (ctx->cert != NULL)
3105 return ctx->cert->key->x509;
3110 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3112 if (ctx->cert != NULL)
3113 return ctx->cert->key->privatekey;
3118 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3120 if ((s->session != NULL) && (s->session->cipher != NULL))
3121 return(s->session->cipher);
3124 #ifdef OPENSSL_NO_COMP
3125 const void *SSL_get_current_compression(SSL *s)
3129 const void *SSL_get_current_expansion(SSL *s)
3135 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3137 if (s->compress != NULL)
3138 return(s->compress->meth);
3142 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3144 if (s->expand != NULL)
3145 return(s->expand->meth);
3150 int ssl_init_wbio_buffer(SSL *s,int push)
3154 if (s->bbio == NULL)
3156 bbio=BIO_new(BIO_f_buffer());
3157 if (bbio == NULL) return(0);
3163 if (s->bbio == s->wbio)
3164 s->wbio=BIO_pop(s->wbio);
3166 (void)BIO_reset(bbio);
3167 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3168 if (!BIO_set_read_buffer_size(bbio,1))
3170 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
3175 if (s->wbio != bbio)
3176 s->wbio=BIO_push(bbio,s->wbio);
3180 if (s->wbio == bbio)
3181 s->wbio=BIO_pop(bbio);
3186 void ssl_free_wbio_buffer(SSL *s)
3188 if (s->bbio == NULL) return;
3190 if (s->bbio == s->wbio)
3192 /* remove buffering */
3193 s->wbio=BIO_pop(s->wbio);
3194 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
3195 assert(s->wbio != NULL);
3202 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
3204 ctx->quiet_shutdown=mode;
3207 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3209 return(ctx->quiet_shutdown);
3212 void SSL_set_quiet_shutdown(SSL *s,int mode)
3214 s->quiet_shutdown=mode;
3217 int SSL_get_quiet_shutdown(const SSL *s)
3219 return(s->quiet_shutdown);
3222 void SSL_set_shutdown(SSL *s,int mode)
3227 int SSL_get_shutdown(const SSL *s)
3229 return(s->shutdown);
3232 int SSL_version(const SSL *s)
3237 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3242 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
3244 if (ssl->ctx == ctx)
3246 #ifndef OPENSSL_NO_TLSEXT
3248 ctx = ssl->initial_ctx;
3250 if (ssl->cert != NULL)
3251 ssl_cert_free(ssl->cert);
3252 ssl->cert = ssl_cert_dup(ctx->cert);
3253 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
3254 if (ssl->ctx != NULL)
3255 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3260 #ifndef OPENSSL_NO_STDIO
3261 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3263 return(X509_STORE_set_default_paths(ctx->cert_store));
3266 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3269 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
3273 void SSL_set_info_callback(SSL *ssl,
3274 void (*cb)(const SSL *ssl,int type,int val))
3276 ssl->info_callback=cb;
3279 /* One compiler (Diab DCC) doesn't like argument names in returned
3280 function pointer. */
3281 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
3283 return ssl->info_callback;
3286 int SSL_state(const SSL *ssl)
3291 void SSL_set_state(SSL *ssl, int state)
3296 void SSL_set_verify_result(SSL *ssl,long arg)
3298 ssl->verify_result=arg;
3301 long SSL_get_verify_result(const SSL *ssl)
3303 return(ssl->verify_result);
3306 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3307 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3309 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3310 new_func, dup_func, free_func);
3313 int SSL_set_ex_data(SSL *s,int idx,void *arg)
3315 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3318 void *SSL_get_ex_data(const SSL *s,int idx)
3320 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3323 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3324 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3326 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3327 new_func, dup_func, free_func);
3330 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
3332 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3335 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
3337 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3345 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3347 return(ctx->cert_store);
3350 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
3352 if (ctx->cert_store != NULL)
3353 X509_STORE_free(ctx->cert_store);
3354 ctx->cert_store=store;
3357 int SSL_want(const SSL *s)
3363 * \brief Set the callback for generating temporary RSA keys.
3364 * \param ctx the SSL context.
3365 * \param cb the callback
3368 #ifndef OPENSSL_NO_RSA
3369 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
3373 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3376 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
3380 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3386 * \brief The RSA temporary key callback function.
3387 * \param ssl the SSL session.
3388 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3389 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3390 * of the required key in bits.
3391 * \return the temporary RSA key.
3392 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3395 RSA *cb(SSL *ssl,int is_export,int keylength)
3400 * \brief Set the callback for generating temporary DH keys.
3401 * \param ctx the SSL context.
3402 * \param dh the callback
3405 #ifndef OPENSSL_NO_DH
3406 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
3409 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3412 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
3415 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3419 #ifndef OPENSSL_NO_ECDH
3420 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3423 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3426 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3429 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3433 #ifndef OPENSSL_NO_PSK
3434 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3436 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3438 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3441 if (ctx->psk_identity_hint != NULL)
3442 OPENSSL_free(ctx->psk_identity_hint);
3443 if (identity_hint != NULL)
3445 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3446 if (ctx->psk_identity_hint == NULL)
3450 ctx->psk_identity_hint = NULL;
3454 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3459 if (s->session == NULL)
3460 return 1; /* session not created yet, ignored */
3462 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3464 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3467 if (s->session->psk_identity_hint != NULL)
3468 OPENSSL_free(s->session->psk_identity_hint);
3469 if (identity_hint != NULL)
3471 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3472 if (s->session->psk_identity_hint == NULL)
3476 s->session->psk_identity_hint = NULL;
3480 const char *SSL_get_psk_identity_hint(const SSL *s)
3482 if (s == NULL || s->session == NULL)
3484 return(s->session->psk_identity_hint);
3487 const char *SSL_get_psk_identity(const SSL *s)
3489 if (s == NULL || s->session == NULL)
3491 return(s->session->psk_identity);
3494 void SSL_set_psk_client_callback(SSL *s,
3495 unsigned int (*cb)(SSL *ssl, const char *hint,
3496 char *identity, unsigned int max_identity_len, unsigned char *psk,
3497 unsigned int max_psk_len))
3499 s->psk_client_callback = cb;
3502 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3503 unsigned int (*cb)(SSL *ssl, const char *hint,
3504 char *identity, unsigned int max_identity_len, unsigned char *psk,
3505 unsigned int max_psk_len))
3507 ctx->psk_client_callback = cb;
3510 void SSL_set_psk_server_callback(SSL *s,
3511 unsigned int (*cb)(SSL *ssl, const char *identity,
3512 unsigned char *psk, unsigned int max_psk_len))
3514 s->psk_server_callback = cb;
3517 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3518 unsigned int (*cb)(SSL *ssl, const char *identity,
3519 unsigned char *psk, unsigned int max_psk_len))
3521 ctx->psk_server_callback = cb;
3525 void SSL_CTX_set_msg_callback(SSL_CTX *ctx, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
3527 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3529 void SSL_set_msg_callback(SSL *ssl, void (*cb)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))
3531 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3534 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3535 int (*cb)(SSL *ssl, int is_forward_secure))
3537 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3538 (void (*)(void))cb);
3540 void SSL_set_not_resumable_session_callback(SSL *ssl,
3541 int (*cb)(SSL *ssl, int is_forward_secure))
3543 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3544 (void (*)(void))cb);
3547 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3548 * vairable, freeing EVP_MD_CTX previously stored in that variable, if
3549 * any. If EVP_MD pointer is passed, initializes ctx with this md
3550 * Returns newly allocated ctx;
3553 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
3555 ssl_clear_hash_ctx(hash);
3556 *hash = EVP_MD_CTX_create();
3557 if (md) EVP_DigestInit_ex(*hash,md,NULL);
3560 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3563 if (*hash) EVP_MD_CTX_destroy(*hash);
3567 void SSL_set_debug(SSL *s, int debug)
3572 int SSL_cache_hit(SSL *s)
3577 int SSL_is_server(SSL *s)
3582 void SSL_set_security_level(SSL *s, int level)
3584 s->cert->sec_level = level;
3587 int SSL_get_security_level(const SSL *s)
3589 return s->cert->sec_level;
3592 void SSL_set_security_callback(SSL *s, int (*cb)(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex))
3594 s->cert->sec_cb = cb;
3597 int (*SSL_get_security_callback(const SSL *s))(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex)
3599 return s->cert->sec_cb;
3602 void SSL_set0_security_ex_data(SSL *s, void *ex)
3604 s->cert->sec_ex = ex;
3607 void *SSL_get0_security_ex_data(const SSL *s)
3609 return s->cert->sec_ex;
3612 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3614 ctx->cert->sec_level = level;
3617 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3619 return ctx->cert->sec_level;
3622 void SSL_CTX_set_security_callback(SSL_CTX *ctx, int (*cb)(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex))
3624 ctx->cert->sec_cb = cb;
3627 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx))(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex)
3629 return ctx->cert->sec_cb;
3632 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3634 ctx->cert->sec_ex = ex;
3637 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3639 return ctx->cert->sec_ex;
3643 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3644 #include "../crypto/bio/bss_file.c"
3647 IMPLEMENT_STACK_OF(SSL_CIPHER)
3648 IMPLEMENT_STACK_OF(SSL_COMP)
3649 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,