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 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);
492 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
493 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
494 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
498 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
500 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
503 int SSL_set_purpose(SSL *s, int purpose)
505 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
508 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
510 return X509_VERIFY_PARAM_set_trust(s->param, trust);
513 int SSL_set_trust(SSL *s, int trust)
515 return X509_VERIFY_PARAM_set_trust(s->param, trust);
518 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
520 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
523 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
525 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
528 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
533 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
538 void SSL_certs_clear(SSL *s)
540 ssl_cert_clear_certs(s->cert);
543 void SSL_free(SSL *s)
550 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
558 fprintf(stderr,"SSL_free, bad reference count\n");
564 X509_VERIFY_PARAM_free(s->param);
566 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
570 /* If the buffering BIO is in place, pop it off */
571 if (s->bbio == s->wbio)
573 s->wbio=BIO_pop(s->wbio);
579 BIO_free_all(s->rbio);
580 if ((s->wbio != NULL) && (s->wbio != s->rbio))
581 BIO_free_all(s->wbio);
583 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
585 /* add extra stuff */
586 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
587 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
589 /* Make the next call work :-) */
590 if (s->session != NULL)
592 ssl_clear_bad_session(s);
593 SSL_SESSION_free(s->session);
596 ssl_clear_cipher_ctx(s);
597 ssl_clear_hash_ctx(&s->read_hash);
598 ssl_clear_hash_ctx(&s->write_hash);
600 if (s->cert != NULL) ssl_cert_free(s->cert);
601 /* Free up if allocated */
603 #ifndef OPENSSL_NO_TLSEXT
604 if (s->tlsext_hostname)
605 OPENSSL_free(s->tlsext_hostname);
606 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
607 #ifndef OPENSSL_NO_EC
608 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
609 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
610 #endif /* OPENSSL_NO_EC */
611 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input);
612 if (s->tlsext_ocsp_exts)
613 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
614 X509_EXTENSION_free);
615 if (s->tlsext_ocsp_ids)
616 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
617 if (s->tlsext_ocsp_resp)
618 OPENSSL_free(s->tlsext_ocsp_resp);
619 if (s->alpn_client_proto_list)
620 OPENSSL_free(s->alpn_client_proto_list);
623 if (s->client_CA != NULL)
624 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
626 if (s->method != NULL) s->method->ssl_free(s);
628 if (s->ctx) SSL_CTX_free(s->ctx);
630 #ifndef OPENSSL_NO_KRB5
631 if (s->kssl_ctx != NULL)
632 kssl_ctx_free(s->kssl_ctx);
633 #endif /* OPENSSL_NO_KRB5 */
635 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
636 if (s->next_proto_negotiated)
637 OPENSSL_free(s->next_proto_negotiated);
640 if (s->srtp_profiles)
641 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
646 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
648 /* If the output buffering BIO is still in place, remove it
652 if (s->wbio == s->bbio)
654 s->wbio=s->wbio->next_bio;
655 s->bbio->next_bio=NULL;
658 if ((s->rbio != NULL) && (s->rbio != rbio))
659 BIO_free_all(s->rbio);
660 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
661 BIO_free_all(s->wbio);
666 BIO *SSL_get_rbio(const SSL *s)
669 BIO *SSL_get_wbio(const SSL *s)
672 int SSL_get_fd(const SSL *s)
674 return(SSL_get_rfd(s));
677 int SSL_get_rfd(const SSL *s)
683 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
689 int SSL_get_wfd(const SSL *s)
695 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
701 #ifndef OPENSSL_NO_SOCK
702 int SSL_set_fd(SSL *s,int fd)
707 bio=BIO_new(BIO_s_socket());
711 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
714 BIO_set_fd(bio,fd,BIO_NOCLOSE);
715 SSL_set_bio(s,bio,bio);
721 int SSL_set_wfd(SSL *s,int fd)
726 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
727 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
729 bio=BIO_new(BIO_s_socket());
732 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
733 BIO_set_fd(bio,fd,BIO_NOCLOSE);
734 SSL_set_bio(s,SSL_get_rbio(s),bio);
737 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
743 int SSL_set_rfd(SSL *s,int fd)
748 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
749 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
751 bio=BIO_new(BIO_s_socket());
755 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
758 BIO_set_fd(bio,fd,BIO_NOCLOSE);
759 SSL_set_bio(s,bio,SSL_get_wbio(s));
762 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
770 /* return length of latest Finished message we sent, copy to 'buf' */
771 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
777 ret = s->s3->tmp.finish_md_len;
780 memcpy(buf, s->s3->tmp.finish_md, count);
785 /* return length of latest Finished message we expected, copy to 'buf' */
786 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
792 ret = s->s3->tmp.peer_finish_md_len;
795 memcpy(buf, s->s3->tmp.peer_finish_md, count);
801 int SSL_get_verify_mode(const SSL *s)
803 return(s->verify_mode);
806 int SSL_get_verify_depth(const SSL *s)
808 return X509_VERIFY_PARAM_get_depth(s->param);
811 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
813 return(s->verify_callback);
816 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
818 return(ctx->verify_mode);
821 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
823 return X509_VERIFY_PARAM_get_depth(ctx->param);
826 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
828 return(ctx->default_verify_callback);
831 void SSL_set_verify(SSL *s,int mode,
832 int (*callback)(int ok,X509_STORE_CTX *ctx))
835 if (callback != NULL)
836 s->verify_callback=callback;
839 void SSL_set_verify_depth(SSL *s,int depth)
841 X509_VERIFY_PARAM_set_depth(s->param, depth);
844 void SSL_set_read_ahead(SSL *s,int yes)
849 int SSL_get_read_ahead(const SSL *s)
851 return(s->read_ahead);
854 int SSL_pending(const SSL *s)
856 /* SSL_pending cannot work properly if read-ahead is enabled
857 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
858 * and it is impossible to fix since SSL_pending cannot report
859 * errors that may be observed while scanning the new data.
860 * (Note that SSL_pending() is often used as a boolean value,
861 * so we'd better not return -1.)
863 return(s->method->ssl_pending(s));
866 X509 *SSL_get_peer_certificate(const SSL *s)
870 if ((s == NULL) || (s->session == NULL))
875 if (r == NULL) return(r);
877 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
882 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
886 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
889 r=s->session->sess_cert->cert_chain;
891 /* If we are a client, cert_chain includes the peer's own
892 * certificate; if we are a server, it does not. */
897 /* Now in theory, since the calling process own 't' it should be safe to
898 * modify. We need to be able to read f without being hassled */
899 void SSL_copy_session_id(SSL *t,const SSL *f)
903 /* Do we need to to SSL locking? */
904 SSL_set_session(t,SSL_get_session(f));
906 /* what if we are setup as SSLv2 but want to talk SSLv3 or
908 if (t->method != f->method)
910 t->method->ssl_free(t); /* cleanup current */
911 t->method=f->method; /* change method */
912 t->method->ssl_new(t); /* setup new */
918 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
923 if (tmp != NULL) ssl_cert_free(tmp);
924 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
927 /* Fix this so it checks all the valid key/cert options */
928 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
930 if ( (ctx == NULL) ||
931 (ctx->cert == NULL) ||
932 (ctx->cert->key->x509 == NULL))
934 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
937 if (ctx->cert->key->privatekey == NULL)
939 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
942 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
945 /* Fix this function so that it takes an optional type parameter */
946 int SSL_check_private_key(const SSL *ssl)
950 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
953 if (ssl->cert == NULL)
955 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
958 if (ssl->cert->key->x509 == NULL)
960 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
963 if (ssl->cert->key->privatekey == NULL)
965 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
968 return(X509_check_private_key(ssl->cert->key->x509,
969 ssl->cert->key->privatekey));
972 int SSL_accept(SSL *s)
974 if (s->handshake_func == 0)
975 /* Not properly initialized yet */
976 SSL_set_accept_state(s);
978 return(s->method->ssl_accept(s));
981 int SSL_connect(SSL *s)
983 if (s->handshake_func == 0)
984 /* Not properly initialized yet */
985 SSL_set_connect_state(s);
987 return(s->method->ssl_connect(s));
990 long SSL_get_default_timeout(const SSL *s)
992 return(s->method->get_timeout());
995 int SSL_read(SSL *s,void *buf,int num)
997 if (s->handshake_func == 0)
999 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
1003 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
1005 s->rwstate=SSL_NOTHING;
1008 return(s->method->ssl_read(s,buf,num));
1011 int SSL_peek(SSL *s,void *buf,int num)
1013 if (s->handshake_func == 0)
1015 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1019 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
1023 return(s->method->ssl_peek(s,buf,num));
1026 int SSL_write(SSL *s,const void *buf,int num)
1028 if (s->handshake_func == 0)
1030 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1034 if (s->shutdown & SSL_SENT_SHUTDOWN)
1036 s->rwstate=SSL_NOTHING;
1037 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
1040 return(s->method->ssl_write(s,buf,num));
1043 int SSL_shutdown(SSL *s)
1045 /* Note that this function behaves differently from what one might
1046 * expect. Return values are 0 for no success (yet),
1047 * 1 for success; but calling it once is usually not enough,
1048 * even if blocking I/O is used (see ssl3_shutdown).
1051 if (s->handshake_func == 0)
1053 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1057 if ((s != NULL) && !SSL_in_init(s))
1058 return(s->method->ssl_shutdown(s));
1063 int SSL_renegotiate(SSL *s)
1065 if (s->renegotiate == 0)
1070 return(s->method->ssl_renegotiate(s));
1073 int SSL_renegotiate_abbreviated(SSL *s)
1075 if (s->renegotiate == 0)
1080 return(s->method->ssl_renegotiate(s));
1083 int SSL_renegotiate_pending(SSL *s)
1085 /* becomes true when negotiation is requested;
1086 * false again once a handshake has finished */
1087 return (s->renegotiate != 0);
1090 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1096 case SSL_CTRL_GET_READ_AHEAD:
1097 return(s->read_ahead);
1098 case SSL_CTRL_SET_READ_AHEAD:
1103 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1104 s->msg_callback_arg = parg;
1107 case SSL_CTRL_OPTIONS:
1108 return(s->options|=larg);
1109 case SSL_CTRL_CLEAR_OPTIONS:
1110 return(s->options&=~larg);
1112 return(s->mode|=larg);
1113 case SSL_CTRL_CLEAR_MODE:
1114 return(s->mode &=~larg);
1115 case SSL_CTRL_GET_MAX_CERT_LIST:
1116 return(s->max_cert_list);
1117 case SSL_CTRL_SET_MAX_CERT_LIST:
1119 s->max_cert_list=larg;
1121 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1122 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1124 s->max_send_fragment = larg;
1126 case SSL_CTRL_GET_RI_SUPPORT:
1128 return s->s3->send_connection_binding;
1130 case SSL_CTRL_CERT_FLAGS:
1131 return(s->cert->cert_flags|=larg);
1132 case SSL_CTRL_CLEAR_CERT_FLAGS:
1133 return(s->cert->cert_flags &=~larg);
1135 case SSL_CTRL_GET_RAW_CIPHERLIST:
1138 if (s->cert->ciphers_raw == NULL)
1140 *(unsigned char **)parg = s->cert->ciphers_raw;
1141 return (int)s->cert->ciphers_rawlen;
1144 return ssl_put_cipher_by_char(s,NULL,NULL);
1146 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1150 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1154 case SSL_CTRL_SET_MSG_CALLBACK:
1155 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1159 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1163 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1165 return ctx->sessions;
1168 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1171 /* For some cases with ctx == NULL perform syntax checks */
1176 #ifndef OPENSSL_NO_EC
1177 case SSL_CTRL_SET_CURVES_LIST:
1178 return tls1_set_curves_list(NULL, NULL, parg);
1180 case SSL_CTRL_SET_SIGALGS_LIST:
1181 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
1182 return tls1_set_sigalgs_list(NULL, parg, 0);
1190 case SSL_CTRL_GET_READ_AHEAD:
1191 return(ctx->read_ahead);
1192 case SSL_CTRL_SET_READ_AHEAD:
1194 ctx->read_ahead=larg;
1197 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1198 ctx->msg_callback_arg = parg;
1201 case SSL_CTRL_GET_MAX_CERT_LIST:
1202 return(ctx->max_cert_list);
1203 case SSL_CTRL_SET_MAX_CERT_LIST:
1204 l=ctx->max_cert_list;
1205 ctx->max_cert_list=larg;
1208 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1209 l=ctx->session_cache_size;
1210 ctx->session_cache_size=larg;
1212 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1213 return(ctx->session_cache_size);
1214 case SSL_CTRL_SET_SESS_CACHE_MODE:
1215 l=ctx->session_cache_mode;
1216 ctx->session_cache_mode=larg;
1218 case SSL_CTRL_GET_SESS_CACHE_MODE:
1219 return(ctx->session_cache_mode);
1221 case SSL_CTRL_SESS_NUMBER:
1222 return(lh_SSL_SESSION_num_items(ctx->sessions));
1223 case SSL_CTRL_SESS_CONNECT:
1224 return(ctx->stats.sess_connect);
1225 case SSL_CTRL_SESS_CONNECT_GOOD:
1226 return(ctx->stats.sess_connect_good);
1227 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1228 return(ctx->stats.sess_connect_renegotiate);
1229 case SSL_CTRL_SESS_ACCEPT:
1230 return(ctx->stats.sess_accept);
1231 case SSL_CTRL_SESS_ACCEPT_GOOD:
1232 return(ctx->stats.sess_accept_good);
1233 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1234 return(ctx->stats.sess_accept_renegotiate);
1235 case SSL_CTRL_SESS_HIT:
1236 return(ctx->stats.sess_hit);
1237 case SSL_CTRL_SESS_CB_HIT:
1238 return(ctx->stats.sess_cb_hit);
1239 case SSL_CTRL_SESS_MISSES:
1240 return(ctx->stats.sess_miss);
1241 case SSL_CTRL_SESS_TIMEOUTS:
1242 return(ctx->stats.sess_timeout);
1243 case SSL_CTRL_SESS_CACHE_FULL:
1244 return(ctx->stats.sess_cache_full);
1245 case SSL_CTRL_OPTIONS:
1246 return(ctx->options|=larg);
1247 case SSL_CTRL_CLEAR_OPTIONS:
1248 return(ctx->options&=~larg);
1250 return(ctx->mode|=larg);
1251 case SSL_CTRL_CLEAR_MODE:
1252 return(ctx->mode&=~larg);
1253 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1254 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1256 ctx->max_send_fragment = larg;
1258 case SSL_CTRL_CERT_FLAGS:
1259 return(ctx->cert->cert_flags|=larg);
1260 case SSL_CTRL_CLEAR_CERT_FLAGS:
1261 return(ctx->cert->cert_flags &=~larg);
1263 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1267 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1271 case SSL_CTRL_SET_MSG_CALLBACK:
1272 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1276 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1280 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1288 return((l > 0)?1:-1);
1291 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1292 const SSL_CIPHER * const *bp)
1296 l=(*ap)->id-(*bp)->id;
1300 return((l > 0)?1:-1);
1303 /** return a STACK of the ciphers available for the SSL and in order of
1305 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1309 if (s->cipher_list != NULL)
1311 return(s->cipher_list);
1313 else if ((s->ctx != NULL) &&
1314 (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++)
1332 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
1333 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1336 sk = sk_SSL_CIPHER_new_null();
1339 if (!sk_SSL_CIPHER_push(sk, c))
1341 sk_SSL_CIPHER_free(sk);
1349 /** return a STACK of the ciphers available for the SSL and in order of
1351 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1355 if (s->cipher_list_by_id != NULL)
1357 return(s->cipher_list_by_id);
1359 else if ((s->ctx != NULL) &&
1360 (s->ctx->cipher_list_by_id != NULL))
1362 return(s->ctx->cipher_list_by_id);
1368 /** The old interface to get the same thing as SSL_get_ciphers() */
1369 const char *SSL_get_cipher_list(const SSL *s,int n)
1372 STACK_OF(SSL_CIPHER) *sk;
1374 if (s == NULL) return(NULL);
1375 sk=SSL_get_ciphers(s);
1376 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1378 c=sk_SSL_CIPHER_value(sk,n);
1379 if (c == NULL) return(NULL);
1383 /** specify the ciphers to be used by default by the SSL_CTX */
1384 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1386 STACK_OF(SSL_CIPHER) *sk;
1388 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1389 &ctx->cipher_list_by_id,str, ctx->cert);
1390 /* ssl_create_cipher_list may return an empty stack if it
1391 * was unable to find a cipher matching the given rule string
1392 * (for example if the rule string specifies a cipher which
1393 * has been disabled). This is not an error as far as
1394 * ssl_create_cipher_list is concerned, and hence
1395 * ctx->cipher_list and ctx->cipher_list_by_id has been
1399 else if (sk_SSL_CIPHER_num(sk) == 0)
1401 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1407 /** specify the ciphers to be used by the SSL */
1408 int SSL_set_cipher_list(SSL *s,const char *str)
1410 STACK_OF(SSL_CIPHER) *sk;
1412 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1413 &s->cipher_list_by_id,str, s->cert);
1414 /* see comment in SSL_CTX_set_cipher_list */
1417 else if (sk_SSL_CIPHER_num(sk) == 0)
1419 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1425 /* works well for SSLv2, not so good for SSLv3 */
1426 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1429 STACK_OF(SSL_CIPHER) *sk;
1433 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1438 sk=s->session->ciphers;
1440 if (sk_SSL_CIPHER_num(sk) == 0)
1443 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1447 c=sk_SSL_CIPHER_value(sk,i);
1465 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1466 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1471 int empty_reneg_info_scsv = !s->renegotiate;
1472 /* Set disabled masks for this session */
1473 ssl_set_client_disabled(s);
1475 if (sk == NULL) return(0);
1478 put_cb = s->method->put_cipher_by_char;
1480 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1482 c=sk_SSL_CIPHER_value(sk,i);
1483 /* Skip disabled ciphers */
1484 if (ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED))
1486 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
1487 if (c->id == SSL3_CK_SCSV)
1489 if (!empty_reneg_info_scsv)
1492 empty_reneg_info_scsv = 0;
1498 /* If p == q, no ciphers; caller indicates an error.
1499 * Otherwise, add applicable SCSVs. */
1502 if (empty_reneg_info_scsv)
1504 static SSL_CIPHER scsv =
1506 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1508 j = put_cb(&scsv,p);
1510 #ifdef OPENSSL_RI_DEBUG
1511 fprintf(stderr, "TLS_EMPTY_RENEGOTIATION_INFO_SCSV sent by client\n");
1514 if (s->mode & SSL_MODE_SEND_FALLBACK_SCSV)
1516 static SSL_CIPHER scsv =
1518 0, NULL, SSL3_CK_FALLBACK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1520 j = put_cb(&scsv,p);
1528 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1529 STACK_OF(SSL_CIPHER) **skp)
1531 const SSL_CIPHER *c;
1532 STACK_OF(SSL_CIPHER) *sk;
1536 s->s3->send_connection_binding = 0;
1538 n=ssl_put_cipher_by_char(s,NULL,NULL);
1539 if (n == 0 || (num%n) != 0)
1541 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1544 if ((skp == NULL) || (*skp == NULL))
1545 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1549 sk_SSL_CIPHER_zero(sk);
1552 if (s->cert->ciphers_raw)
1553 OPENSSL_free(s->cert->ciphers_raw);
1554 s->cert->ciphers_raw = BUF_memdup(p, num);
1555 if (s->cert->ciphers_raw == NULL)
1557 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1560 s->cert->ciphers_rawlen = (size_t)num;
1562 for (i=0; i<num; i+=n)
1564 /* Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV */
1565 if (s->s3 && (n != 3 || !p[0]) &&
1566 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1567 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1569 /* SCSV fatal if renegotiating */
1572 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1573 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1576 s->s3->send_connection_binding = 1;
1578 #ifdef OPENSSL_RI_DEBUG
1579 fprintf(stderr, "SCSV received by server\n");
1584 /* Check for TLS_FALLBACK_SCSV */
1585 if ((n != 3 || !p[0]) &&
1586 (p[n-2] == ((SSL3_CK_FALLBACK_SCSV >> 8) & 0xff)) &&
1587 (p[n-1] == (SSL3_CK_FALLBACK_SCSV & 0xff)))
1589 /* The SCSV indicates that the client previously tried a higher version.
1590 * Fail if the current version is an unexpected downgrade. */
1591 if (!SSL_ctrl(s, SSL_CTRL_CHECK_PROTO_VERSION, 0, NULL))
1593 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_INAPPROPRIATE_FALLBACK);
1595 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INAPPROPRIATE_FALLBACK);
1602 c=ssl_get_cipher_by_char(s,p);
1606 if (!sk_SSL_CIPHER_push(sk,c))
1608 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1618 if ((skp == NULL) || (*skp == NULL))
1619 sk_SSL_CIPHER_free(sk);
1624 #ifndef OPENSSL_NO_TLSEXT
1625 /** return a servername extension value if provided in Client Hello, or NULL.
1626 * So far, only host_name types are defined (RFC 3546).
1629 const char *SSL_get_servername(const SSL *s, const int type)
1631 if (type != TLSEXT_NAMETYPE_host_name)
1634 return s->session && !s->tlsext_hostname ?
1635 s->session->tlsext_hostname :
1639 int SSL_get_servername_type(const SSL *s)
1641 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1642 return TLSEXT_NAMETYPE_host_name;
1646 /* SSL_select_next_proto implements the standard protocol selection. It is
1647 * expected that this function is called from the callback set by
1648 * SSL_CTX_set_next_proto_select_cb.
1650 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
1651 * strings. The length byte itself is not included in the length. A byte
1652 * string of length 0 is invalid. No byte string may be truncated.
1654 * The current, but experimental algorithm for selecting the protocol is:
1656 * 1) If the server doesn't support NPN then this is indicated to the
1657 * callback. In this case, the client application has to abort the connection
1658 * or have a default application level protocol.
1660 * 2) If the server supports NPN, but advertises an empty list then the
1661 * client selects the first protcol in its list, but indicates via the
1662 * API that this fallback case was enacted.
1664 * 3) Otherwise, the client finds the first protocol in the server's list
1665 * that it supports and selects this protocol. This is because it's
1666 * assumed that the server has better information about which protocol
1667 * a client should use.
1669 * 4) If the client doesn't support any of the server's advertised
1670 * protocols, then this is treated the same as case 2.
1673 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
1674 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1676 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)
1679 const unsigned char *result;
1680 int status = OPENSSL_NPN_UNSUPPORTED;
1682 /* For each protocol in server preference order, see if we support it. */
1683 for (i = 0; i < server_len; )
1685 for (j = 0; j < client_len; )
1687 if (server[i] == client[j] &&
1688 memcmp(&server[i+1], &client[j+1], server[i]) == 0)
1690 /* We found a match */
1691 result = &server[i];
1692 status = OPENSSL_NPN_NEGOTIATED;
1702 /* There's no overlap between our protocols and the server's list. */
1704 status = OPENSSL_NPN_NO_OVERLAP;
1707 *out = (unsigned char *) result + 1;
1708 *outlen = result[0];
1712 # ifndef OPENSSL_NO_NEXTPROTONEG
1713 /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's
1714 * requested protocol for this connection and returns 0. If the client didn't
1715 * request any protocol, then *data is set to NULL.
1717 * Note that the client can request any protocol it chooses. The value returned
1718 * from this function need not be a member of the list of supported protocols
1719 * provided by the callback.
1721 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len)
1723 *data = s->next_proto_negotiated;
1727 *len = s->next_proto_negotiated_len;
1731 /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
1732 * TLS server needs a list of supported protocols for Next Protocol
1733 * Negotiation. The returned list must be in wire format. The list is returned
1734 * by setting |out| to point to it and |outlen| to its length. This memory will
1735 * not be modified, but one should assume that the SSL* keeps a reference to
1738 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no
1739 * such extension will be included in the ServerHello. */
1740 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)
1742 ctx->next_protos_advertised_cb = cb;
1743 ctx->next_protos_advertised_cb_arg = arg;
1746 /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1747 * client needs to select a protocol from the server's provided list. |out|
1748 * must be set to point to the selected protocol (which may be within |in|).
1749 * The length of the protocol name must be written into |outlen|. The server's
1750 * advertised protocols are provided in |in| and |inlen|. The callback can
1751 * assume that |in| is syntactically valid.
1753 * The client must select a protocol. It is fatal to the connection if this
1754 * callback returns a value other than SSL_TLSEXT_ERR_OK.
1756 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)
1758 ctx->next_proto_select_cb = cb;
1759 ctx->next_proto_select_cb_arg = arg;
1763 /* SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
1764 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1765 * length-prefixed strings).
1767 * Returns 0 on success. */
1768 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char* protos,
1769 unsigned protos_len)
1771 if (ctx->alpn_client_proto_list)
1772 OPENSSL_free(ctx->alpn_client_proto_list);
1774 ctx->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1775 if (!ctx->alpn_client_proto_list)
1777 memcpy(ctx->alpn_client_proto_list, protos, protos_len);
1778 ctx->alpn_client_proto_list_len = protos_len;
1783 /* SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
1784 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
1785 * length-prefixed strings).
1787 * Returns 0 on success. */
1788 int SSL_set_alpn_protos(SSL *ssl, const unsigned char* protos,
1789 unsigned protos_len)
1791 if (ssl->alpn_client_proto_list)
1792 OPENSSL_free(ssl->alpn_client_proto_list);
1794 ssl->alpn_client_proto_list = OPENSSL_malloc(protos_len);
1795 if (!ssl->alpn_client_proto_list)
1797 memcpy(ssl->alpn_client_proto_list, protos, protos_len);
1798 ssl->alpn_client_proto_list_len = protos_len;
1803 /* SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is called
1804 * during ClientHello processing in order to select an ALPN protocol from the
1805 * client's list of offered protocols. */
1806 void SSL_CTX_set_alpn_select_cb(SSL_CTX* ctx,
1807 int (*cb) (SSL *ssl,
1808 const unsigned char **out,
1809 unsigned char *outlen,
1810 const unsigned char *in,
1815 ctx->alpn_select_cb = cb;
1816 ctx->alpn_select_cb_arg = arg;
1819 /* SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
1820 * On return it sets |*data| to point to |*len| bytes of protocol name (not
1821 * including the leading length-prefix byte). If the server didn't respond with
1822 * a negotiated protocol then |*len| will be zero. */
1823 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
1828 *data = ssl->s3->alpn_selected;
1832 *len = ssl->s3->alpn_selected_len;
1835 #endif /* !OPENSSL_NO_TLSEXT */
1837 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1838 const char *label, size_t llen, const unsigned char *p, size_t plen,
1841 if (s->version < TLS1_VERSION)
1844 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1849 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1854 ((unsigned int) a->session_id[0] )|
1855 ((unsigned int) a->session_id[1]<< 8L)|
1856 ((unsigned long)a->session_id[2]<<16L)|
1857 ((unsigned long)a->session_id[3]<<24L);
1861 /* NB: If this function (or indeed the hash function which uses a sort of
1862 * coarser function than this one) is changed, ensure
1863 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1864 * able to construct an SSL_SESSION that will collide with any existing session
1865 * with a matching session ID. */
1866 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1868 if (a->ssl_version != b->ssl_version)
1870 if (a->session_id_length != b->session_id_length)
1872 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1875 /* These wrapper functions should remain rather than redeclaring
1876 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1877 * variable. The reason is that the functions aren't static, they're exposed via
1879 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1880 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1882 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1888 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1892 if (FIPS_mode() && (meth->version < TLS1_VERSION))
1894 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1898 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1900 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1903 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1907 memset(ret,0,sizeof(SSL_CTX));
1911 ret->cert_store=NULL;
1912 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1913 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1914 ret->session_cache_head=NULL;
1915 ret->session_cache_tail=NULL;
1917 /* We take the system default */
1918 ret->session_timeout=meth->get_timeout();
1920 ret->new_session_cb=0;
1921 ret->remove_session_cb=0;
1922 ret->get_session_cb=0;
1923 ret->generate_session_id=0;
1925 memset((char *)&ret->stats,0,sizeof(ret->stats));
1928 ret->quiet_shutdown=0;
1930 /* ret->cipher=NULL;*/
1931 /* ret->s2->challenge=NULL;
1932 ret->master_key=NULL;
1933 ret->s2->conn_id=NULL; */
1935 ret->info_callback=NULL;
1937 ret->app_verify_callback=0;
1938 ret->app_verify_arg=NULL;
1940 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1942 ret->msg_callback=0;
1943 ret->msg_callback_arg=NULL;
1944 ret->verify_mode=SSL_VERIFY_NONE;
1946 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1948 ret->sid_ctx_length=0;
1949 ret->default_verify_callback=NULL;
1950 if ((ret->cert=ssl_cert_new()) == NULL)
1953 ret->default_passwd_callback=0;
1954 ret->default_passwd_callback_userdata=NULL;
1955 ret->client_cert_cb=0;
1956 ret->app_gen_cookie_cb=0;
1957 ret->app_verify_cookie_cb=0;
1959 ret->sessions=lh_SSL_SESSION_new();
1960 if (ret->sessions == NULL) goto err;
1961 ret->cert_store=X509_STORE_new();
1962 if (ret->cert_store == NULL) goto err;
1964 ssl_create_cipher_list(ret->method,
1965 &ret->cipher_list,&ret->cipher_list_by_id,
1966 SSL_DEFAULT_CIPHER_LIST, ret->cert);
1967 if (ret->cipher_list == NULL
1968 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1970 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1974 ret->param = X509_VERIFY_PARAM_new();
1978 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1980 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1983 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1985 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1989 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1992 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1994 ret->extra_certs=NULL;
1995 /* No compression for DTLS */
1996 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
1997 ret->comp_methods=SSL_COMP_get_compression_methods();
1999 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
2001 #ifndef OPENSSL_NO_TLSEXT
2002 ret->tlsext_servername_callback = 0;
2003 ret->tlsext_servername_arg = NULL;
2004 /* Setup RFC4507 ticket keys */
2005 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
2006 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
2007 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
2008 ret->options |= SSL_OP_NO_TICKET;
2010 ret->tlsext_status_cb = 0;
2011 ret->tlsext_status_arg = NULL;
2013 # ifndef OPENSSL_NO_NEXTPROTONEG
2014 ret->next_protos_advertised_cb = 0;
2015 ret->next_proto_select_cb = 0;
2018 #ifndef OPENSSL_NO_PSK
2019 ret->psk_identity_hint=NULL;
2020 ret->psk_client_callback=NULL;
2021 ret->psk_server_callback=NULL;
2023 #ifndef OPENSSL_NO_SRP
2024 SSL_CTX_SRP_CTX_init(ret);
2026 #ifndef OPENSSL_NO_BUF_FREELISTS
2027 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
2028 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
2029 if (!ret->rbuf_freelist)
2031 ret->rbuf_freelist->chunklen = 0;
2032 ret->rbuf_freelist->len = 0;
2033 ret->rbuf_freelist->head = NULL;
2034 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
2035 if (!ret->wbuf_freelist)
2037 OPENSSL_free(ret->rbuf_freelist);
2040 ret->wbuf_freelist->chunklen = 0;
2041 ret->wbuf_freelist->len = 0;
2042 ret->wbuf_freelist->head = NULL;
2044 #ifndef OPENSSL_NO_ENGINE
2045 ret->client_cert_engine = NULL;
2046 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2047 #define eng_strx(x) #x
2048 #define eng_str(x) eng_strx(x)
2049 /* Use specific client engine automatically... ignore errors */
2052 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2056 ENGINE_load_builtin_engines();
2057 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2059 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2064 /* Default is to connect to non-RI servers. When RI is more widely
2065 * deployed might change this.
2067 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
2071 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
2073 if (ret != NULL) SSL_CTX_free(ret);
2078 static void SSL_COMP_free(SSL_COMP *comp)
2079 { OPENSSL_free(comp); }
2082 #ifndef OPENSSL_NO_BUF_FREELISTS
2084 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
2086 SSL3_BUF_FREELIST_ENTRY *ent, *next;
2087 for (ent = list->head; ent; ent = next)
2096 void SSL_CTX_free(SSL_CTX *a)
2100 if (a == NULL) return;
2102 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
2104 REF_PRINT("SSL_CTX",a);
2110 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
2116 X509_VERIFY_PARAM_free(a->param);
2119 * Free internal session cache. However: the remove_cb() may reference
2120 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2121 * after the sessions were flushed.
2122 * As the ex_data handling routines might also touch the session cache,
2123 * the most secure solution seems to be: empty (flush) the cache, then
2124 * free ex_data, then finally free the cache.
2125 * (See ticket [openssl.org #212].)
2127 if (a->sessions != NULL)
2128 SSL_CTX_flush_sessions(a,0);
2130 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
2132 if (a->sessions != NULL)
2133 lh_SSL_SESSION_free(a->sessions);
2135 if (a->cert_store != NULL)
2136 X509_STORE_free(a->cert_store);
2137 if (a->cipher_list != NULL)
2138 sk_SSL_CIPHER_free(a->cipher_list);
2139 if (a->cipher_list_by_id != NULL)
2140 sk_SSL_CIPHER_free(a->cipher_list_by_id);
2141 if (a->cert != NULL)
2142 ssl_cert_free(a->cert);
2143 if (a->client_CA != NULL)
2144 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
2145 if (a->extra_certs != NULL)
2146 sk_X509_pop_free(a->extra_certs,X509_free);
2147 #if 0 /* This should never be done, since it removes a global database */
2148 if (a->comp_methods != NULL)
2149 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
2151 a->comp_methods = NULL;
2154 if (a->srtp_profiles)
2155 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
2157 #ifndef OPENSSL_NO_PSK
2158 if (a->psk_identity_hint)
2159 OPENSSL_free(a->psk_identity_hint);
2161 #ifndef OPENSSL_NO_SRP
2162 SSL_CTX_SRP_CTX_free(a);
2164 #ifndef OPENSSL_NO_ENGINE
2165 if (a->client_cert_engine)
2166 ENGINE_finish(a->client_cert_engine);
2169 #ifndef OPENSSL_NO_BUF_FREELISTS
2170 if (a->wbuf_freelist)
2171 ssl_buf_freelist_free(a->wbuf_freelist);
2172 if (a->rbuf_freelist)
2173 ssl_buf_freelist_free(a->rbuf_freelist);
2175 #ifndef OPENSSL_NO_TLSEXT
2176 # ifndef OPENSSL_NO_EC
2177 if (a->tlsext_ecpointformatlist)
2178 OPENSSL_free(a->tlsext_ecpointformatlist);
2179 if (a->tlsext_ellipticcurvelist)
2180 OPENSSL_free(a->tlsext_ellipticcurvelist);
2181 # endif /* OPENSSL_NO_EC */
2182 if (a->alpn_client_proto_list != NULL)
2183 OPENSSL_free(a->alpn_client_proto_list);
2189 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2191 ctx->default_passwd_callback=cb;
2194 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
2196 ctx->default_passwd_callback_userdata=u;
2199 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
2201 ctx->app_verify_callback=cb;
2202 ctx->app_verify_arg=arg;
2205 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
2207 ctx->verify_mode=mode;
2208 ctx->default_verify_callback=cb;
2211 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
2213 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2216 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb)(SSL *ssl, void *arg), void *arg)
2218 ssl_cert_set_cert_cb(c->cert, cb, arg);
2221 void SSL_set_cert_cb(SSL *s, int (*cb)(SSL *ssl, void *arg), void *arg)
2223 ssl_cert_set_cert_cb(s->cert, cb, arg);
2226 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2229 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
2230 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
2231 int rsa_tmp_export,dh_tmp_export,kl;
2232 unsigned long mask_k,mask_a,emask_k,emask_a;
2233 #ifndef OPENSSL_NO_ECDSA
2234 int have_ecc_cert, ecdsa_ok, ecc_pkey_size;
2236 #ifndef OPENSSL_NO_ECDH
2237 int have_ecdh_tmp, ecdh_ok;
2239 #ifndef OPENSSL_NO_EC
2241 EVP_PKEY *ecc_pkey = NULL;
2242 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2244 if (c == NULL) return;
2246 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
2248 #ifndef OPENSSL_NO_RSA
2249 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2250 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
2251 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
2253 rsa_tmp=rsa_tmp_export=0;
2255 #ifndef OPENSSL_NO_DH
2256 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
2257 dh_tmp_export= !c->dh_tmp_auto && (c->dh_tmp_cb != NULL ||
2258 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
2260 dh_tmp=dh_tmp_export=0;
2263 #ifndef OPENSSL_NO_ECDH
2264 have_ecdh_tmp=(c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2266 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
2267 rsa_enc= cpk->valid_flags & CERT_PKEY_VALID;
2268 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2269 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2270 rsa_sign= cpk->valid_flags & CERT_PKEY_SIGN;
2271 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2272 dsa_sign= cpk->valid_flags & CERT_PKEY_SIGN;
2273 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
2274 dh_rsa= cpk->valid_flags & CERT_PKEY_VALID;
2275 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2276 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
2277 /* FIX THIS EAY EAY EAY */
2278 dh_dsa= cpk->valid_flags & CERT_PKEY_VALID;
2279 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2280 cpk= &(c->pkeys[SSL_PKEY_ECC]);
2281 #ifndef OPENSSL_NO_EC
2282 have_ecc_cert= cpk->valid_flags & CERT_PKEY_VALID;
2292 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2293 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
2294 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
2297 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2298 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2299 mask_k |= SSL_kGOST;
2300 mask_a |= SSL_aGOST01;
2302 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2303 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2304 mask_k |= SSL_kGOST;
2305 mask_a |= SSL_aGOST94;
2308 if (rsa_enc || (rsa_tmp && rsa_sign))
2310 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2314 /* The match needs to be both kDHE and aRSA or aDSA, so don't worry */
2315 if ( (dh_tmp || dh_rsa || dh_dsa) &&
2316 (rsa_enc || rsa_sign || dsa_sign))
2318 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2319 (rsa_enc || rsa_sign || dsa_sign))
2329 if (dh_rsa) mask_k|=SSL_kDHr;
2330 if (dh_rsa_export) emask_k|=SSL_kDHr;
2332 if (dh_dsa) mask_k|=SSL_kDHd;
2333 if (dh_dsa_export) emask_k|=SSL_kDHd;
2335 if (emask_k & (SSL_kDHr|SSL_kDHd))
2338 if (rsa_enc || rsa_sign)
2353 #ifndef OPENSSL_NO_KRB5
2360 /* An ECC certificate may be usable for ECDH and/or
2361 * ECDSA cipher suites depending on the key usage extension.
2363 #ifndef OPENSSL_NO_EC
2366 cpk = &c->pkeys[SSL_PKEY_ECC];
2368 /* This call populates extension flags (ex_flags) */
2369 X509_check_purpose(x, -1, 0);
2370 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2371 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2372 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2373 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2374 if (!(cpk->valid_flags & CERT_PKEY_SIGN))
2376 ecc_pkey = X509_get_pubkey(x);
2377 ecc_pkey_size = (ecc_pkey != NULL) ?
2378 EVP_PKEY_bits(ecc_pkey) : 0;
2379 EVP_PKEY_free(ecc_pkey);
2380 if ((x->sig_alg) && (x->sig_alg->algorithm))
2382 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2383 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2385 #ifndef OPENSSL_NO_ECDH
2389 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa)
2393 if (ecc_pkey_size <= 163)
2395 emask_k|=SSL_kECDHr;
2400 if (pk_nid == NID_X9_62_id_ecPublicKey)
2404 if (ecc_pkey_size <= 163)
2406 emask_k|=SSL_kECDHe;
2412 #ifndef OPENSSL_NO_ECDSA
2416 emask_a|=SSL_aECDSA;
2422 #ifndef OPENSSL_NO_ECDH
2426 emask_k|=SSL_kECDHE;
2430 #ifndef OPENSSL_NO_PSK
2433 emask_k |= SSL_kPSK;
2434 emask_a |= SSL_aPSK;
2439 c->export_mask_k=emask_k;
2440 c->export_mask_a=emask_a;
2444 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2445 #define ku_reject(x, usage) \
2446 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2448 #ifndef OPENSSL_NO_EC
2450 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2452 unsigned long alg_k, alg_a;
2453 EVP_PKEY *pkey = NULL;
2455 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2456 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2458 alg_k = cs->algorithm_mkey;
2459 alg_a = cs->algorithm_auth;
2461 if (SSL_C_IS_EXPORT(cs))
2463 /* ECDH key length in export ciphers must be <= 163 bits */
2464 pkey = X509_get_pubkey(x);
2465 if (pkey == NULL) return 0;
2466 keysize = EVP_PKEY_bits(pkey);
2467 EVP_PKEY_free(pkey);
2468 if (keysize > 163) return 0;
2471 /* This call populates the ex_flags field correctly */
2472 X509_check_purpose(x, -1, 0);
2473 if ((x->sig_alg) && (x->sig_alg->algorithm))
2475 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2476 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2478 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2480 /* key usage, if present, must allow key agreement */
2481 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2483 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2486 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION)
2488 /* signature alg must be ECDSA */
2489 if (pk_nid != NID_X9_62_id_ecPublicKey)
2491 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2495 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION)
2497 /* signature alg must be RSA */
2499 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa)
2501 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2506 if (alg_a & SSL_aECDSA)
2508 /* key usage, if present, must allow signing */
2509 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2511 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2516 return 1; /* all checks are ok */
2521 static int ssl_get_server_cert_index(const SSL *s)
2524 idx = ssl_cipher_get_cert_index(s->s3->tmp.new_cipher);
2525 if (idx == SSL_PKEY_RSA_ENC && !s->cert->pkeys[SSL_PKEY_RSA_ENC].x509)
2526 idx = SSL_PKEY_RSA_SIGN;
2528 SSLerr(SSL_F_SSL_GET_SERVER_CERT_INDEX,ERR_R_INTERNAL_ERROR);
2532 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2538 if (!s->s3 || !s->s3->tmp.new_cipher)
2540 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2542 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2543 /* Broken protocol test: return last used certificate: which may
2544 * mismatch the one expected.
2546 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2550 i = ssl_get_server_cert_index(s);
2552 /* This may or may not be an error. */
2557 return &c->pkeys[i];
2560 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd)
2562 unsigned long alg_a;
2566 alg_a = cipher->algorithm_auth;
2569 #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL
2570 /* Broken protocol test: use last key: which may
2571 * mismatch the one expected.
2573 if (c->cert_flags & SSL_CERT_FLAG_BROKEN_PROTOCOL)
2574 idx = c->key - c->pkeys;
2578 if ((alg_a & SSL_aDSS) &&
2579 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2580 idx = SSL_PKEY_DSA_SIGN;
2581 else if (alg_a & SSL_aRSA)
2583 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2584 idx = SSL_PKEY_RSA_SIGN;
2585 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2586 idx = SSL_PKEY_RSA_ENC;
2588 else if ((alg_a & SSL_aECDSA) &&
2589 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2593 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2597 *pmd = c->pkeys[idx].digest;
2598 return c->pkeys[idx].privatekey;
2601 #ifndef OPENSSL_NO_TLSEXT
2602 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
2603 size_t *serverinfo_length)
2607 *serverinfo_length = 0;
2610 i = ssl_get_server_cert_index(s);
2614 if (c->pkeys[i].serverinfo == NULL)
2617 *serverinfo = c->pkeys[i].serverinfo;
2618 *serverinfo_length = c->pkeys[i].serverinfo_length;
2623 void ssl_update_cache(SSL *s,int mode)
2627 /* If the session_id_length is 0, we are not supposed to cache it,
2628 * and it would be rather hard to do anyway :-) */
2629 if (s->session->session_id_length == 0) return;
2631 i=s->session_ctx->session_cache_mode;
2632 if ((i & mode) && (!s->hit)
2633 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2634 || SSL_CTX_add_session(s->session_ctx,s->session))
2635 && (s->session_ctx->new_session_cb != NULL))
2637 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2638 if (!s->session_ctx->new_session_cb(s,s->session))
2639 SSL_SESSION_free(s->session);
2642 /* auto flush every 255 connections */
2643 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2644 ((i & mode) == mode))
2646 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2647 ?s->session_ctx->stats.sess_connect_good
2648 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2650 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2655 const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
2660 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2665 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2670 if (s->method != meth)
2672 if (s->handshake_func != NULL)
2673 conn=(s->handshake_func == s->method->ssl_connect);
2675 if (s->method->version == meth->version)
2679 s->method->ssl_free(s);
2681 ret=s->method->ssl_new(s);
2685 s->handshake_func=meth->ssl_connect;
2687 s->handshake_func=meth->ssl_accept;
2692 int SSL_get_error(const SSL *s,int i)
2698 if (i > 0) return(SSL_ERROR_NONE);
2700 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2701 * etc, where we do encode the error */
2702 if ((l=ERR_peek_error()) != 0)
2704 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2705 return(SSL_ERROR_SYSCALL);
2707 return(SSL_ERROR_SSL);
2710 if ((i < 0) && SSL_want_read(s))
2712 bio=SSL_get_rbio(s);
2713 if (BIO_should_read(bio))
2714 return(SSL_ERROR_WANT_READ);
2715 else if (BIO_should_write(bio))
2716 /* This one doesn't make too much sense ... We never try
2717 * to write to the rbio, and an application program where
2718 * rbio and wbio are separate couldn't even know what it
2720 * However if we ever set s->rwstate incorrectly
2721 * (so that we have SSL_want_read(s) instead of
2722 * SSL_want_write(s)) and rbio and wbio *are* the same,
2723 * this test works around that bug; so it might be safer
2725 return(SSL_ERROR_WANT_WRITE);
2726 else if (BIO_should_io_special(bio))
2728 reason=BIO_get_retry_reason(bio);
2729 if (reason == BIO_RR_CONNECT)
2730 return(SSL_ERROR_WANT_CONNECT);
2731 else if (reason == BIO_RR_ACCEPT)
2732 return(SSL_ERROR_WANT_ACCEPT);
2734 return(SSL_ERROR_SYSCALL); /* unknown */
2738 if ((i < 0) && SSL_want_write(s))
2740 bio=SSL_get_wbio(s);
2741 if (BIO_should_write(bio))
2742 return(SSL_ERROR_WANT_WRITE);
2743 else if (BIO_should_read(bio))
2744 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2745 return(SSL_ERROR_WANT_READ);
2746 else if (BIO_should_io_special(bio))
2748 reason=BIO_get_retry_reason(bio);
2749 if (reason == BIO_RR_CONNECT)
2750 return(SSL_ERROR_WANT_CONNECT);
2751 else if (reason == BIO_RR_ACCEPT)
2752 return(SSL_ERROR_WANT_ACCEPT);
2754 return(SSL_ERROR_SYSCALL);
2757 if ((i < 0) && SSL_want_x509_lookup(s))
2759 return(SSL_ERROR_WANT_X509_LOOKUP);
2764 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2765 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2766 return(SSL_ERROR_ZERO_RETURN);
2768 return(SSL_ERROR_SYSCALL);
2771 int SSL_do_handshake(SSL *s)
2775 if (s->handshake_func == NULL)
2777 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2781 s->method->ssl_renegotiate_check(s);
2783 if (SSL_in_init(s) || SSL_in_before(s))
2785 ret=s->handshake_func(s);
2790 /* For the next 2 functions, SSL_clear() sets shutdown and so
2791 * one of these calls will reset it */
2792 void SSL_set_accept_state(SSL *s)
2796 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2797 s->handshake_func=s->method->ssl_accept;
2798 /* clear the current cipher */
2799 ssl_clear_cipher_ctx(s);
2800 ssl_clear_hash_ctx(&s->read_hash);
2801 ssl_clear_hash_ctx(&s->write_hash);
2804 void SSL_set_connect_state(SSL *s)
2808 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2809 s->handshake_func=s->method->ssl_connect;
2810 /* clear the current cipher */
2811 ssl_clear_cipher_ctx(s);
2812 ssl_clear_hash_ctx(&s->read_hash);
2813 ssl_clear_hash_ctx(&s->write_hash);
2816 int ssl_undefined_function(SSL *s)
2818 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2822 int ssl_undefined_void_function(void)
2824 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2828 int ssl_undefined_const_function(const SSL *s)
2830 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2834 SSL_METHOD *ssl_bad_method(int ver)
2836 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2840 const char *SSL_get_version(const SSL *s)
2842 if (s->version == TLS1_2_VERSION)
2844 else if (s->version == TLS1_1_VERSION)
2846 else if (s->version == TLS1_VERSION)
2848 else if (s->version == SSL3_VERSION)
2854 SSL *SSL_dup(SSL *s)
2856 STACK_OF(X509_NAME) *sk;
2861 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2864 ret->version = s->version;
2865 ret->type = s->type;
2866 ret->method = s->method;
2868 if (s->session != NULL)
2870 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2871 SSL_copy_session_id(ret,s);
2875 /* No session has been established yet, so we have to expect
2876 * that s->cert or ret->cert will be changed later --
2877 * they should not both point to the same object,
2878 * and thus we can't use SSL_copy_session_id. */
2880 ret->method->ssl_free(ret);
2881 ret->method = s->method;
2882 ret->method->ssl_new(ret);
2884 if (s->cert != NULL)
2886 if (ret->cert != NULL)
2888 ssl_cert_free(ret->cert);
2890 ret->cert = ssl_cert_dup(s->cert);
2891 if (ret->cert == NULL)
2895 SSL_set_session_id_context(ret,
2896 s->sid_ctx, s->sid_ctx_length);
2899 ret->options=s->options;
2901 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2902 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2903 ret->msg_callback = s->msg_callback;
2904 ret->msg_callback_arg = s->msg_callback_arg;
2905 SSL_set_verify(ret,SSL_get_verify_mode(s),
2906 SSL_get_verify_callback(s));
2907 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2908 ret->generate_session_id = s->generate_session_id;
2910 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2912 ret->debug=s->debug;
2914 /* copy app data, a little dangerous perhaps */
2915 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2918 /* setup rbio, and wbio */
2919 if (s->rbio != NULL)
2921 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2924 if (s->wbio != NULL)
2926 if (s->wbio != s->rbio)
2928 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2932 ret->wbio=ret->rbio;
2934 ret->rwstate = s->rwstate;
2935 ret->in_handshake = s->in_handshake;
2936 ret->handshake_func = s->handshake_func;
2937 ret->server = s->server;
2938 ret->renegotiate = s->renegotiate;
2939 ret->new_session = s->new_session;
2940 ret->quiet_shutdown = s->quiet_shutdown;
2941 ret->shutdown=s->shutdown;
2942 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2943 ret->rstate=s->rstate;
2944 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2947 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2949 /* dup the cipher_list and cipher_list_by_id stacks */
2950 if (s->cipher_list != NULL)
2952 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2955 if (s->cipher_list_by_id != NULL)
2956 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2960 /* Dup the client_CA list */
2961 if (s->client_CA != NULL)
2963 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2965 for (i=0; i<sk_X509_NAME_num(sk); i++)
2967 xn=sk_X509_NAME_value(sk,i);
2968 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2979 if (ret != NULL) SSL_free(ret);
2985 void ssl_clear_cipher_ctx(SSL *s)
2987 if (s->enc_read_ctx != NULL)
2989 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2990 OPENSSL_free(s->enc_read_ctx);
2991 s->enc_read_ctx=NULL;
2993 if (s->enc_write_ctx != NULL)
2995 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2996 OPENSSL_free(s->enc_write_ctx);
2997 s->enc_write_ctx=NULL;
2999 #ifndef OPENSSL_NO_COMP
3000 if (s->expand != NULL)
3002 COMP_CTX_free(s->expand);
3005 if (s->compress != NULL)
3007 COMP_CTX_free(s->compress);
3013 X509 *SSL_get_certificate(const SSL *s)
3015 if (s->cert != NULL)
3016 return(s->cert->key->x509);
3021 EVP_PKEY *SSL_get_privatekey(const SSL *s)
3023 if (s->cert != NULL)
3024 return(s->cert->key->privatekey);
3029 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3031 if (ctx->cert != NULL)
3032 return ctx->cert->key->x509;
3037 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3039 if (ctx->cert != NULL)
3040 return ctx->cert->key->privatekey;
3045 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3047 if ((s->session != NULL) && (s->session->cipher != NULL))
3048 return(s->session->cipher);
3051 #ifdef OPENSSL_NO_COMP
3052 const void *SSL_get_current_compression(SSL *s)
3056 const void *SSL_get_current_expansion(SSL *s)
3062 const COMP_METHOD *SSL_get_current_compression(SSL *s)
3064 if (s->compress != NULL)
3065 return(s->compress->meth);
3069 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
3071 if (s->expand != NULL)
3072 return(s->expand->meth);
3077 int ssl_init_wbio_buffer(SSL *s,int push)
3081 if (s->bbio == NULL)
3083 bbio=BIO_new(BIO_f_buffer());
3084 if (bbio == NULL) return(0);
3090 if (s->bbio == s->wbio)
3091 s->wbio=BIO_pop(s->wbio);
3093 (void)BIO_reset(bbio);
3094 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
3095 if (!BIO_set_read_buffer_size(bbio,1))
3097 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
3102 if (s->wbio != bbio)
3103 s->wbio=BIO_push(bbio,s->wbio);
3107 if (s->wbio == bbio)
3108 s->wbio=BIO_pop(bbio);
3113 void ssl_free_wbio_buffer(SSL *s)
3115 if (s->bbio == NULL) return;
3117 if (s->bbio == s->wbio)
3119 /* remove buffering */
3120 s->wbio=BIO_pop(s->wbio);
3121 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
3122 assert(s->wbio != NULL);
3129 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
3131 ctx->quiet_shutdown=mode;
3134 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
3136 return(ctx->quiet_shutdown);
3139 void SSL_set_quiet_shutdown(SSL *s,int mode)
3141 s->quiet_shutdown=mode;
3144 int SSL_get_quiet_shutdown(const SSL *s)
3146 return(s->quiet_shutdown);
3149 void SSL_set_shutdown(SSL *s,int mode)
3154 int SSL_get_shutdown(const SSL *s)
3156 return(s->shutdown);
3159 int SSL_version(const SSL *s)
3164 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
3169 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
3171 CERT *ocert = ssl->cert;
3172 if (ssl->ctx == ctx)
3174 #ifndef OPENSSL_NO_TLSEXT
3176 ctx = ssl->initial_ctx;
3178 ssl->cert = ssl_cert_dup(ctx->cert);
3181 /* Preserve any already negotiated parameters */
3184 ssl->cert->peer_sigalgs = ocert->peer_sigalgs;
3185 ssl->cert->peer_sigalgslen = ocert->peer_sigalgslen;
3186 ocert->peer_sigalgs = NULL;
3187 ssl->cert->ciphers_raw = ocert->ciphers_raw;
3188 ssl->cert->ciphers_rawlen = ocert->ciphers_rawlen;
3189 ocert->ciphers_raw = NULL;
3191 ssl_cert_free(ocert);
3193 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
3194 if (ssl->ctx != NULL)
3195 SSL_CTX_free(ssl->ctx); /* decrement reference count */
3200 #ifndef OPENSSL_NO_STDIO
3201 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
3203 return(X509_STORE_set_default_paths(ctx->cert_store));
3206 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
3209 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
3213 void SSL_set_info_callback(SSL *ssl,
3214 void (*cb)(const SSL *ssl,int type,int val))
3216 ssl->info_callback=cb;
3219 /* One compiler (Diab DCC) doesn't like argument names in returned
3220 function pointer. */
3221 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
3223 return ssl->info_callback;
3226 int SSL_state(const SSL *ssl)
3231 void SSL_set_state(SSL *ssl, int state)
3236 void SSL_set_verify_result(SSL *ssl,long arg)
3238 ssl->verify_result=arg;
3241 long SSL_get_verify_result(const SSL *ssl)
3243 return(ssl->verify_result);
3246 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3247 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3249 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3250 new_func, dup_func, free_func);
3253 int SSL_set_ex_data(SSL *s,int idx,void *arg)
3255 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3258 void *SSL_get_ex_data(const SSL *s,int idx)
3260 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3263 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3264 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3266 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3267 new_func, dup_func, free_func);
3270 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
3272 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3275 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
3277 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3285 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3287 return(ctx->cert_store);
3290 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
3292 if (ctx->cert_store != NULL)
3293 X509_STORE_free(ctx->cert_store);
3294 ctx->cert_store=store;
3297 int SSL_want(const SSL *s)
3303 * \brief Set the callback for generating temporary RSA keys.
3304 * \param ctx the SSL context.
3305 * \param cb the callback
3308 #ifndef OPENSSL_NO_RSA
3309 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
3313 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3316 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
3320 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3326 * \brief The RSA temporary key callback function.
3327 * \param ssl the SSL session.
3328 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3329 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3330 * of the required key in bits.
3331 * \return the temporary RSA key.
3332 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3335 RSA *cb(SSL *ssl,int is_export,int keylength)
3340 * \brief Set the callback for generating temporary DH keys.
3341 * \param ctx the SSL context.
3342 * \param dh the callback
3345 #ifndef OPENSSL_NO_DH
3346 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
3349 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3352 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
3355 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3359 #ifndef OPENSSL_NO_ECDH
3360 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3363 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3366 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3369 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3373 #ifndef OPENSSL_NO_PSK
3374 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3376 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3378 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3381 if (ctx->psk_identity_hint != NULL)
3382 OPENSSL_free(ctx->psk_identity_hint);
3383 if (identity_hint != NULL)
3385 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3386 if (ctx->psk_identity_hint == NULL)
3390 ctx->psk_identity_hint = NULL;
3394 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3399 if (s->session == NULL)
3400 return 1; /* session not created yet, ignored */
3402 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3404 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3407 if (s->session->psk_identity_hint != NULL)
3408 OPENSSL_free(s->session->psk_identity_hint);
3409 if (identity_hint != NULL)
3411 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3412 if (s->session->psk_identity_hint == NULL)
3416 s->session->psk_identity_hint = NULL;
3420 const char *SSL_get_psk_identity_hint(const SSL *s)
3422 if (s == NULL || s->session == NULL)
3424 return(s->session->psk_identity_hint);
3427 const char *SSL_get_psk_identity(const SSL *s)
3429 if (s == NULL || s->session == NULL)
3431 return(s->session->psk_identity);
3434 void SSL_set_psk_client_callback(SSL *s,
3435 unsigned int (*cb)(SSL *ssl, const char *hint,
3436 char *identity, unsigned int max_identity_len, unsigned char *psk,
3437 unsigned int max_psk_len))
3439 s->psk_client_callback = cb;
3442 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3443 unsigned int (*cb)(SSL *ssl, const char *hint,
3444 char *identity, unsigned int max_identity_len, unsigned char *psk,
3445 unsigned int max_psk_len))
3447 ctx->psk_client_callback = cb;
3450 void SSL_set_psk_server_callback(SSL *s,
3451 unsigned int (*cb)(SSL *ssl, const char *identity,
3452 unsigned char *psk, unsigned int max_psk_len))
3454 s->psk_server_callback = cb;
3457 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3458 unsigned int (*cb)(SSL *ssl, const char *identity,
3459 unsigned char *psk, unsigned int max_psk_len))
3461 ctx->psk_server_callback = cb;
3465 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))
3467 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3469 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))
3471 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3474 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3475 int (*cb)(SSL *ssl, int is_forward_secure))
3477 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3478 (void (*)(void))cb);
3480 void SSL_set_not_resumable_session_callback(SSL *ssl,
3481 int (*cb)(SSL *ssl, int is_forward_secure))
3483 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3484 (void (*)(void))cb);
3487 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3488 * vairable, freeing EVP_MD_CTX previously stored in that variable, if
3489 * any. If EVP_MD pointer is passed, initializes ctx with this md
3490 * Returns newly allocated ctx;
3493 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
3495 ssl_clear_hash_ctx(hash);
3496 *hash = EVP_MD_CTX_create();
3497 if (md) EVP_DigestInit_ex(*hash,md,NULL);
3500 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3503 if (*hash) EVP_MD_CTX_destroy(*hash);
3507 void SSL_set_debug(SSL *s, int debug)
3512 int SSL_cache_hit(SSL *s)
3517 int SSL_is_server(SSL *s)
3522 void SSL_set_security_level(SSL *s, int level)
3524 s->cert->sec_level = level;
3527 int SSL_get_security_level(const SSL *s)
3529 return s->cert->sec_level;
3532 void SSL_set_security_callback(SSL *s, int (*cb)(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex))
3534 s->cert->sec_cb = cb;
3537 int (*SSL_get_security_callback(const SSL *s))(SSL *s, SSL_CTX *ctx, int op, int bits, int nid, void *other, void *ex)
3539 return s->cert->sec_cb;
3542 void SSL_set0_security_ex_data(SSL *s, void *ex)
3544 s->cert->sec_ex = ex;
3547 void *SSL_get0_security_ex_data(const SSL *s)
3549 return s->cert->sec_ex;
3552 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
3554 ctx->cert->sec_level = level;
3557 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
3559 return ctx->cert->sec_level;
3562 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))
3564 ctx->cert->sec_cb = cb;
3567 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)
3569 return ctx->cert->sec_cb;
3572 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
3574 ctx->cert->sec_ex = ex;
3577 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
3579 return ctx->cert->sec_ex;
3582 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3583 #include "../crypto/bio/bss_file.c"
3586 IMPLEMENT_STACK_OF(SSL_CIPHER)
3587 IMPLEMENT_STACK_OF(SSL_COMP)
3588 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,