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 <openssl/crypto.h>
150 #include "ssl_locl.h"
151 #include "kssl_lcl.h"
152 #include <openssl/objects.h>
153 #include <openssl/lhash.h>
154 #include <openssl/x509v3.h>
155 #include <openssl/rand.h>
156 #include <openssl/ocsp.h>
157 #ifndef OPENSSL_NO_DH
158 #include <openssl/dh.h>
160 #ifndef OPENSSL_NO_ENGINE
161 #include <openssl/engine.h>
164 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
166 SSL3_ENC_METHOD ssl3_undef_enc_method={
167 /* evil casts, but these functions are only called if there's a library bug */
168 (int (*)(SSL *,int))ssl_undefined_function,
169 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
170 ssl_undefined_function,
171 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
172 (int (*)(SSL*, int))ssl_undefined_function,
173 (int (*)(SSL *, const char*, int, unsigned char *))ssl_undefined_function,
174 0, /* finish_mac_length */
175 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
176 NULL, /* client_finished_label */
177 0, /* client_finished_label_len */
178 NULL, /* server_finished_label */
179 0, /* server_finished_label_len */
180 (int (*)(int))ssl_undefined_function,
181 (int (*)(SSL *, unsigned char *, size_t, const char *,
182 size_t, const unsigned char *, size_t,
183 int use_context)) ssl_undefined_function,
186 int SSL_clear(SSL *s)
189 if (s->method == NULL)
191 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
195 if (ssl_clear_bad_session(s))
197 SSL_SESSION_free(s->session);
205 #if 0 /* Disabled since version 1.10 of this file (early return not
206 * needed because SSL_clear is not called when doing renegotiation) */
207 /* This is set if we are doing dynamic renegotiation so keep
208 * the old cipher. It is sort of a SSL_clear_lite :-) */
209 if (s->renegotiate) return(1);
213 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
220 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
222 s->version=s->method->version;
223 s->client_version=s->version;
224 s->rwstate=SSL_NOTHING;
225 s->rstate=SSL_ST_READ_HEADER;
227 s->read_ahead=s->ctx->read_ahead;
230 if (s->init_buf != NULL)
232 BUF_MEM_free(s->init_buf);
236 ssl_clear_cipher_ctx(s);
237 ssl_clear_hash_ctx(&s->read_hash);
238 ssl_clear_hash_ctx(&s->write_hash);
243 /* Check to see if we were changed into a different method, if
244 * so, revert back if we are not doing session-id reuse. */
245 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
247 s->method->ssl_free(s);
248 s->method=s->ctx->method;
249 if (!s->method->ssl_new(s))
254 s->method->ssl_clear(s);
258 /** Used to change an SSL_CTXs default SSL method type */
259 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth)
261 STACK_OF(SSL_CIPHER) *sk;
265 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
266 &(ctx->cipher_list_by_id),
267 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
268 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
270 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
276 SSL *SSL_new(SSL_CTX *ctx)
282 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
285 if (ctx->method == NULL)
287 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
291 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
292 if (s == NULL) goto err;
293 memset(s,0,sizeof(SSL));
295 #ifndef OPENSSL_NO_KRB5
296 s->kssl_ctx = kssl_ctx_new();
297 #endif /* OPENSSL_NO_KRB5 */
299 s->options=ctx->options;
301 s->max_cert_list=ctx->max_cert_list;
303 if (ctx->cert != NULL)
305 /* Earlier library versions used to copy the pointer to
306 * the CERT, not its contents; only when setting new
307 * parameters for the per-SSL copy, ssl_cert_new would be
308 * called (and the direct reference to the per-SSL_CTX
309 * settings would be lost, but those still were indirectly
310 * accessed for various purposes, and for that reason they
311 * used to be known as s->ctx->default_cert).
312 * Now we don't look at the SSL_CTX's CERT after having
313 * duplicated it once. */
315 s->cert = ssl_cert_dup(ctx->cert);
320 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
322 s->read_ahead=ctx->read_ahead;
323 s->msg_callback=ctx->msg_callback;
324 s->msg_callback_arg=ctx->msg_callback_arg;
325 s->verify_mode=ctx->verify_mode;
326 s->not_resumable_session_cb=ctx->not_resumable_session_cb;
328 s->verify_depth=ctx->verify_depth;
330 s->sid_ctx_length=ctx->sid_ctx_length;
331 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
332 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
333 s->verify_callback=ctx->default_verify_callback;
334 s->generate_session_id=ctx->generate_session_id;
336 s->param = X509_VERIFY_PARAM_new();
339 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
341 s->purpose = ctx->purpose;
342 s->trust = ctx->trust;
344 s->quiet_shutdown=ctx->quiet_shutdown;
345 s->max_send_fragment = ctx->max_send_fragment;
347 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
349 #ifndef OPENSSL_NO_TLSEXT
350 s->tlsext_debug_cb = 0;
351 s->tlsext_debug_arg = NULL;
352 s->tlsext_ticket_expected = 0;
353 s->tlsext_status_type = -1;
354 s->tlsext_status_expected = 0;
355 s->tlsext_ocsp_ids = NULL;
356 s->tlsext_ocsp_exts = NULL;
357 s->tlsext_ocsp_resp = NULL;
358 s->tlsext_ocsp_resplen = -1;
359 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
361 #ifndef OPENSSL_NO_EC
362 if (ctx->tlsext_ecpointformatlist)
364 s->tlsext_ecpointformatlist =
365 BUF_memdup(ctx->tlsext_ecpointformatlist,
366 ctx->tlsext_ecpointformatlist_length);
367 if (!s->tlsext_ecpointformatlist)
369 s->tlsext_ecpointformatlist_length =
370 ctx->tlsext_ecpointformatlist_length;
372 if (ctx->tlsext_ellipticcurvelist)
374 s->tlsext_ellipticcurvelist =
375 BUF_memdup(ctx->tlsext_ellipticcurvelist,
376 ctx->tlsext_ellipticcurvelist_length);
377 if (!s->tlsext_ellipticcurvelist)
379 s->tlsext_ellipticcurvelist_length =
380 ctx->tlsext_ellipticcurvelist_length;
383 # ifndef OPENSSL_NO_NEXTPROTONEG
384 s->next_proto_negotiated = NULL;
388 s->verify_result=X509_V_OK;
390 s->method=ctx->method;
392 if (!s->method->ssl_new(s))
396 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
400 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
402 #ifndef OPENSSL_NO_PSK
403 s->psk_client_callback=ctx->psk_client_callback;
404 s->psk_server_callback=ctx->psk_server_callback;
412 ssl_cert_free(s->cert);
414 SSL_CTX_free(s->ctx); /* decrement reference count */
417 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
421 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
422 unsigned int sid_ctx_len)
424 if(sid_ctx_len > sizeof ctx->sid_ctx)
426 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
429 ctx->sid_ctx_length=sid_ctx_len;
430 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
435 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
436 unsigned int sid_ctx_len)
438 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
440 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
443 ssl->sid_ctx_length=sid_ctx_len;
444 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
449 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
451 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
452 ctx->generate_session_id = cb;
453 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
457 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
459 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
460 ssl->generate_session_id = cb;
461 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
465 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
468 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
469 * we can "construct" a session to give us the desired check - ie. to
470 * find if there's a session in the hash table that would conflict with
471 * any new session built out of this id/id_len and the ssl_version in
472 * use by this SSL. */
475 if(id_len > sizeof r.session_id)
478 r.ssl_version = ssl->version;
479 r.session_id_length = id_len;
480 memcpy(r.session_id, id, id_len);
481 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
482 * callback is calling us to check the uniqueness of a shorter ID, it
483 * must be compared as a padded-out ID because that is what it will be
484 * converted to when the callback has finished choosing it. */
485 if((r.ssl_version == SSL2_VERSION) &&
486 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
488 memset(r.session_id + id_len, 0,
489 SSL2_SSL_SESSION_ID_LENGTH - id_len);
490 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
493 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
494 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
495 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
499 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
501 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
504 int SSL_set_purpose(SSL *s, int purpose)
506 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
509 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
511 return X509_VERIFY_PARAM_set_trust(s->param, trust);
514 int SSL_set_trust(SSL *s, int trust)
516 return X509_VERIFY_PARAM_set_trust(s->param, trust);
519 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
521 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
524 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
526 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
529 void SSL_free(SSL *s)
536 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
544 fprintf(stderr,"SSL_free, bad reference count\n");
550 X509_VERIFY_PARAM_free(s->param);
552 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
556 /* If the buffering BIO is in place, pop it off */
557 if (s->bbio == s->wbio)
559 s->wbio=BIO_pop(s->wbio);
565 BIO_free_all(s->rbio);
566 if ((s->wbio != NULL) && (s->wbio != s->rbio))
567 BIO_free_all(s->wbio);
569 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
571 /* add extra stuff */
572 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
573 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
575 /* Make the next call work :-) */
576 if (s->session != NULL)
578 ssl_clear_bad_session(s);
579 SSL_SESSION_free(s->session);
582 ssl_clear_cipher_ctx(s);
583 ssl_clear_hash_ctx(&s->read_hash);
584 ssl_clear_hash_ctx(&s->write_hash);
586 if (s->cert != NULL) ssl_cert_free(s->cert);
587 /* Free up if allocated */
589 #ifndef OPENSSL_NO_TLSEXT
590 if (s->tlsext_hostname)
591 OPENSSL_free(s->tlsext_hostname);
592 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
593 #ifndef OPENSSL_NO_EC
594 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
595 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
596 #endif /* OPENSSL_NO_EC */
597 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input);
598 if (s->tlsext_ocsp_exts)
599 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
600 X509_EXTENSION_free);
601 if (s->tlsext_ocsp_ids)
602 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
603 if (s->tlsext_ocsp_resp)
604 OPENSSL_free(s->tlsext_ocsp_resp);
607 if (s->client_CA != NULL)
608 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
610 if (s->method != NULL) s->method->ssl_free(s);
612 if (s->ctx) SSL_CTX_free(s->ctx);
614 #ifndef OPENSSL_NO_KRB5
615 if (s->kssl_ctx != NULL)
616 kssl_ctx_free(s->kssl_ctx);
617 #endif /* OPENSSL_NO_KRB5 */
619 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
620 if (s->next_proto_negotiated)
621 OPENSSL_free(s->next_proto_negotiated);
624 if (s->srtp_profiles)
625 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
630 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
632 /* If the output buffering BIO is still in place, remove it
636 if (s->wbio == s->bbio)
638 s->wbio=s->wbio->next_bio;
639 s->bbio->next_bio=NULL;
642 if ((s->rbio != NULL) && (s->rbio != rbio))
643 BIO_free_all(s->rbio);
644 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
645 BIO_free_all(s->wbio);
650 BIO *SSL_get_rbio(const SSL *s)
653 BIO *SSL_get_wbio(const SSL *s)
656 int SSL_get_fd(const SSL *s)
658 return(SSL_get_rfd(s));
661 int SSL_get_rfd(const SSL *s)
667 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
673 int SSL_get_wfd(const SSL *s)
679 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
685 #ifndef OPENSSL_NO_SOCK
686 int SSL_set_fd(SSL *s,int fd)
691 bio=BIO_new(BIO_s_socket());
695 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
698 BIO_set_fd(bio,fd,BIO_NOCLOSE);
699 SSL_set_bio(s,bio,bio);
705 int SSL_set_wfd(SSL *s,int fd)
710 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
711 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
713 bio=BIO_new(BIO_s_socket());
716 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
717 BIO_set_fd(bio,fd,BIO_NOCLOSE);
718 SSL_set_bio(s,SSL_get_rbio(s),bio);
721 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
727 int SSL_set_rfd(SSL *s,int fd)
732 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
733 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
735 bio=BIO_new(BIO_s_socket());
739 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
742 BIO_set_fd(bio,fd,BIO_NOCLOSE);
743 SSL_set_bio(s,bio,SSL_get_wbio(s));
746 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
754 /* return length of latest Finished message we sent, copy to 'buf' */
755 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
761 ret = s->s3->tmp.finish_md_len;
764 memcpy(buf, s->s3->tmp.finish_md, count);
769 /* return length of latest Finished message we expected, copy to 'buf' */
770 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
776 ret = s->s3->tmp.peer_finish_md_len;
779 memcpy(buf, s->s3->tmp.peer_finish_md, count);
785 int SSL_get_verify_mode(const SSL *s)
787 return(s->verify_mode);
790 int SSL_get_verify_depth(const SSL *s)
792 return X509_VERIFY_PARAM_get_depth(s->param);
795 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
797 return(s->verify_callback);
800 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
802 return(ctx->verify_mode);
805 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
807 return X509_VERIFY_PARAM_get_depth(ctx->param);
810 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
812 return(ctx->default_verify_callback);
815 void SSL_set_verify(SSL *s,int mode,
816 int (*callback)(int ok,X509_STORE_CTX *ctx))
819 if (callback != NULL)
820 s->verify_callback=callback;
823 void SSL_set_verify_depth(SSL *s,int depth)
825 X509_VERIFY_PARAM_set_depth(s->param, depth);
828 void SSL_set_read_ahead(SSL *s,int yes)
833 int SSL_get_read_ahead(const SSL *s)
835 return(s->read_ahead);
838 int SSL_pending(const SSL *s)
840 /* SSL_pending cannot work properly if read-ahead is enabled
841 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
842 * and it is impossible to fix since SSL_pending cannot report
843 * errors that may be observed while scanning the new data.
844 * (Note that SSL_pending() is often used as a boolean value,
845 * so we'd better not return -1.)
847 return(s->method->ssl_pending(s));
850 X509 *SSL_get_peer_certificate(const SSL *s)
854 if ((s == NULL) || (s->session == NULL))
859 if (r == NULL) return(r);
861 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
866 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
870 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
873 r=s->session->sess_cert->cert_chain;
875 /* If we are a client, cert_chain includes the peer's own
876 * certificate; if we are a server, it does not. */
881 /* Now in theory, since the calling process own 't' it should be safe to
882 * modify. We need to be able to read f without being hassled */
883 void SSL_copy_session_id(SSL *t,const SSL *f)
887 /* Do we need to to SSL locking? */
888 SSL_set_session(t,SSL_get_session(f));
890 /* what if we are setup as SSLv2 but want to talk SSLv3 or
892 if (t->method != f->method)
894 t->method->ssl_free(t); /* cleanup current */
895 t->method=f->method; /* change method */
896 t->method->ssl_new(t); /* setup new */
902 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
907 if (tmp != NULL) ssl_cert_free(tmp);
908 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
911 /* Fix this so it checks all the valid key/cert options */
912 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
914 if ( (ctx == NULL) ||
915 (ctx->cert == NULL) ||
916 (ctx->cert->key->x509 == NULL))
918 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
921 if (ctx->cert->key->privatekey == NULL)
923 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
926 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
929 /* Fix this function so that it takes an optional type parameter */
930 int SSL_check_private_key(const SSL *ssl)
934 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
937 if (ssl->cert == NULL)
939 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
942 if (ssl->cert->key->x509 == NULL)
944 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
947 if (ssl->cert->key->privatekey == NULL)
949 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
952 return(X509_check_private_key(ssl->cert->key->x509,
953 ssl->cert->key->privatekey));
956 int SSL_accept(SSL *s)
958 if (s->handshake_func == 0)
959 /* Not properly initialized yet */
960 SSL_set_accept_state(s);
962 return(s->method->ssl_accept(s));
965 int SSL_connect(SSL *s)
967 if (s->handshake_func == 0)
968 /* Not properly initialized yet */
969 SSL_set_connect_state(s);
971 return(s->method->ssl_connect(s));
974 long SSL_get_default_timeout(const SSL *s)
976 return(s->method->get_timeout());
979 int SSL_read(SSL *s,void *buf,int num)
981 if (s->handshake_func == 0)
983 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
987 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
989 s->rwstate=SSL_NOTHING;
992 return(s->method->ssl_read(s,buf,num));
995 int SSL_peek(SSL *s,void *buf,int num)
997 if (s->handshake_func == 0)
999 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1003 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
1007 return(s->method->ssl_peek(s,buf,num));
1010 int SSL_write(SSL *s,const void *buf,int num)
1012 if (s->handshake_func == 0)
1014 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1018 if (s->shutdown & SSL_SENT_SHUTDOWN)
1020 s->rwstate=SSL_NOTHING;
1021 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
1024 return(s->method->ssl_write(s,buf,num));
1027 int SSL_shutdown(SSL *s)
1029 /* Note that this function behaves differently from what one might
1030 * expect. Return values are 0 for no success (yet),
1031 * 1 for success; but calling it once is usually not enough,
1032 * even if blocking I/O is used (see ssl3_shutdown).
1035 if (s->handshake_func == 0)
1037 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1041 if ((s != NULL) && !SSL_in_init(s))
1042 return(s->method->ssl_shutdown(s));
1047 int SSL_renegotiate(SSL *s)
1049 if (s->renegotiate == 0)
1054 return(s->method->ssl_renegotiate(s));
1057 int SSL_renegotiate_abbreviated(SSL *s)
1059 if (s->renegotiate == 0)
1064 return(s->method->ssl_renegotiate(s));
1067 int SSL_renegotiate_pending(SSL *s)
1069 /* becomes true when negotiation is requested;
1070 * false again once a handshake has finished */
1071 return (s->renegotiate != 0);
1074 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1080 case SSL_CTRL_GET_READ_AHEAD:
1081 return(s->read_ahead);
1082 case SSL_CTRL_SET_READ_AHEAD:
1087 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1088 s->msg_callback_arg = parg;
1091 case SSL_CTRL_OPTIONS:
1092 return(s->options|=larg);
1093 case SSL_CTRL_CLEAR_OPTIONS:
1094 return(s->options&=~larg);
1096 return(s->mode|=larg);
1097 case SSL_CTRL_CLEAR_MODE:
1098 return(s->mode &=~larg);
1099 case SSL_CTRL_GET_MAX_CERT_LIST:
1100 return(s->max_cert_list);
1101 case SSL_CTRL_SET_MAX_CERT_LIST:
1103 s->max_cert_list=larg;
1105 case SSL_CTRL_SET_MTU:
1106 #ifndef OPENSSL_NO_DTLS1
1107 if (larg < (long)dtls1_min_mtu())
1111 if (SSL_version(s) == DTLS1_VERSION ||
1112 SSL_version(s) == DTLS1_BAD_VER)
1118 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1119 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1121 s->max_send_fragment = larg;
1123 case SSL_CTRL_GET_RI_SUPPORT:
1125 return s->s3->send_connection_binding;
1128 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1132 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1136 case SSL_CTRL_SET_MSG_CALLBACK:
1137 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1141 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1145 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1147 return ctx->sessions;
1150 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1156 case SSL_CTRL_GET_READ_AHEAD:
1157 return(ctx->read_ahead);
1158 case SSL_CTRL_SET_READ_AHEAD:
1160 ctx->read_ahead=larg;
1163 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1164 ctx->msg_callback_arg = parg;
1167 case SSL_CTRL_GET_MAX_CERT_LIST:
1168 return(ctx->max_cert_list);
1169 case SSL_CTRL_SET_MAX_CERT_LIST:
1170 l=ctx->max_cert_list;
1171 ctx->max_cert_list=larg;
1174 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1175 l=ctx->session_cache_size;
1176 ctx->session_cache_size=larg;
1178 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1179 return(ctx->session_cache_size);
1180 case SSL_CTRL_SET_SESS_CACHE_MODE:
1181 l=ctx->session_cache_mode;
1182 ctx->session_cache_mode=larg;
1184 case SSL_CTRL_GET_SESS_CACHE_MODE:
1185 return(ctx->session_cache_mode);
1187 case SSL_CTRL_SESS_NUMBER:
1188 return(lh_SSL_SESSION_num_items(ctx->sessions));
1189 case SSL_CTRL_SESS_CONNECT:
1190 return(ctx->stats.sess_connect);
1191 case SSL_CTRL_SESS_CONNECT_GOOD:
1192 return(ctx->stats.sess_connect_good);
1193 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1194 return(ctx->stats.sess_connect_renegotiate);
1195 case SSL_CTRL_SESS_ACCEPT:
1196 return(ctx->stats.sess_accept);
1197 case SSL_CTRL_SESS_ACCEPT_GOOD:
1198 return(ctx->stats.sess_accept_good);
1199 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1200 return(ctx->stats.sess_accept_renegotiate);
1201 case SSL_CTRL_SESS_HIT:
1202 return(ctx->stats.sess_hit);
1203 case SSL_CTRL_SESS_CB_HIT:
1204 return(ctx->stats.sess_cb_hit);
1205 case SSL_CTRL_SESS_MISSES:
1206 return(ctx->stats.sess_miss);
1207 case SSL_CTRL_SESS_TIMEOUTS:
1208 return(ctx->stats.sess_timeout);
1209 case SSL_CTRL_SESS_CACHE_FULL:
1210 return(ctx->stats.sess_cache_full);
1211 case SSL_CTRL_OPTIONS:
1212 return(ctx->options|=larg);
1213 case SSL_CTRL_CLEAR_OPTIONS:
1214 return(ctx->options&=~larg);
1216 return(ctx->mode|=larg);
1217 case SSL_CTRL_CLEAR_MODE:
1218 return(ctx->mode&=~larg);
1219 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1220 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1222 ctx->max_send_fragment = larg;
1225 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1229 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1233 case SSL_CTRL_SET_MSG_CALLBACK:
1234 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1238 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1242 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1250 return((l > 0)?1:-1);
1253 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1254 const SSL_CIPHER * const *bp)
1258 l=(*ap)->id-(*bp)->id;
1262 return((l > 0)?1:-1);
1265 /** return a STACK of the ciphers available for the SSL and in order of
1267 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1271 if (s->cipher_list != NULL)
1273 return(s->cipher_list);
1275 else if ((s->ctx != NULL) &&
1276 (s->ctx->cipher_list != NULL))
1278 return(s->ctx->cipher_list);
1284 /** return a STACK of the ciphers available for the SSL and in order of
1286 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1290 if (s->cipher_list_by_id != NULL)
1292 return(s->cipher_list_by_id);
1294 else if ((s->ctx != NULL) &&
1295 (s->ctx->cipher_list_by_id != NULL))
1297 return(s->ctx->cipher_list_by_id);
1303 /** The old interface to get the same thing as SSL_get_ciphers() */
1304 const char *SSL_get_cipher_list(const SSL *s,int n)
1307 STACK_OF(SSL_CIPHER) *sk;
1309 if (s == NULL) return(NULL);
1310 sk=SSL_get_ciphers(s);
1311 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1313 c=sk_SSL_CIPHER_value(sk,n);
1314 if (c == NULL) return(NULL);
1318 /** specify the ciphers to be used by default by the SSL_CTX */
1319 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1321 STACK_OF(SSL_CIPHER) *sk;
1323 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1324 &ctx->cipher_list_by_id,str);
1325 /* ssl_create_cipher_list may return an empty stack if it
1326 * was unable to find a cipher matching the given rule string
1327 * (for example if the rule string specifies a cipher which
1328 * has been disabled). This is not an error as far as
1329 * ssl_create_cipher_list is concerned, and hence
1330 * ctx->cipher_list and ctx->cipher_list_by_id has been
1334 else if (sk_SSL_CIPHER_num(sk) == 0)
1336 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1342 /** specify the ciphers to be used by the SSL */
1343 int SSL_set_cipher_list(SSL *s,const char *str)
1345 STACK_OF(SSL_CIPHER) *sk;
1347 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1348 &s->cipher_list_by_id,str);
1349 /* see comment in SSL_CTX_set_cipher_list */
1352 else if (sk_SSL_CIPHER_num(sk) == 0)
1354 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1360 /* works well for SSLv2, not so good for SSLv3 */
1361 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1364 STACK_OF(SSL_CIPHER) *sk;
1368 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1373 sk=s->session->ciphers;
1374 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1378 c=sk_SSL_CIPHER_value(sk,i);
1396 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1397 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1402 #ifndef OPENSSL_NO_KRB5
1403 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1404 #endif /* OPENSSL_NO_KRB5 */
1406 if (sk == NULL) return(0);
1409 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1411 c=sk_SSL_CIPHER_value(sk,i);
1412 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */
1413 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
1414 (TLS1_get_client_version(s) < TLS1_2_VERSION))
1416 #ifndef OPENSSL_NO_KRB5
1417 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) &&
1420 #endif /* OPENSSL_NO_KRB5 */
1421 #ifndef OPENSSL_NO_PSK
1422 /* with PSK there must be client callback set */
1423 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) &&
1424 s->psk_client_callback == NULL)
1426 #endif /* OPENSSL_NO_PSK */
1427 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1430 /* If p == q, no ciphers and caller indicates an error. Otherwise
1431 * add SCSV if not renegotiating.
1433 if (p != q && !s->renegotiate)
1435 static SSL_CIPHER scsv =
1437 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1439 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1441 #ifdef OPENSSL_RI_DEBUG
1442 fprintf(stderr, "SCSV sent by client\n");
1449 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1450 STACK_OF(SSL_CIPHER) **skp)
1452 const SSL_CIPHER *c;
1453 STACK_OF(SSL_CIPHER) *sk;
1456 s->s3->send_connection_binding = 0;
1458 n=ssl_put_cipher_by_char(s,NULL,NULL);
1461 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1464 if ((skp == NULL) || (*skp == NULL))
1465 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1469 sk_SSL_CIPHER_zero(sk);
1472 for (i=0; i<num; i+=n)
1474 /* Check for SCSV */
1475 if (s->s3 && (n != 3 || !p[0]) &&
1476 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1477 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1479 /* SCSV fatal if renegotiating */
1482 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1483 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1486 s->s3->send_connection_binding = 1;
1488 #ifdef OPENSSL_RI_DEBUG
1489 fprintf(stderr, "SCSV received by server\n");
1494 c=ssl_get_cipher_by_char(s,p);
1498 if (!sk_SSL_CIPHER_push(sk,c))
1500 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1510 if ((skp == NULL) || (*skp == NULL))
1511 sk_SSL_CIPHER_free(sk);
1516 #ifndef OPENSSL_NO_TLSEXT
1517 /** return a servername extension value if provided in Client Hello, or NULL.
1518 * So far, only host_name types are defined (RFC 3546).
1521 const char *SSL_get_servername(const SSL *s, const int type)
1523 if (type != TLSEXT_NAMETYPE_host_name)
1526 return s->session && !s->tlsext_hostname ?
1527 s->session->tlsext_hostname :
1531 int SSL_get_servername_type(const SSL *s)
1533 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1534 return TLSEXT_NAMETYPE_host_name;
1538 # ifndef OPENSSL_NO_NEXTPROTONEG
1539 /* SSL_select_next_proto implements the standard protocol selection. It is
1540 * expected that this function is called from the callback set by
1541 * SSL_CTX_set_next_proto_select_cb.
1543 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
1544 * strings. The length byte itself is not included in the length. A byte
1545 * string of length 0 is invalid. No byte string may be truncated.
1547 * The current, but experimental algorithm for selecting the protocol is:
1549 * 1) If the server doesn't support NPN then this is indicated to the
1550 * callback. In this case, the client application has to abort the connection
1551 * or have a default application level protocol.
1553 * 2) If the server supports NPN, but advertises an empty list then the
1554 * client selects the first protcol in its list, but indicates via the
1555 * API that this fallback case was enacted.
1557 * 3) Otherwise, the client finds the first protocol in the server's list
1558 * that it supports and selects this protocol. This is because it's
1559 * assumed that the server has better information about which protocol
1560 * a client should use.
1562 * 4) If the client doesn't support any of the server's advertised
1563 * protocols, then this is treated the same as case 2.
1566 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
1567 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1569 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)
1572 const unsigned char *result;
1573 int status = OPENSSL_NPN_UNSUPPORTED;
1575 /* For each protocol in server preference order, see if we support it. */
1576 for (i = 0; i < server_len; )
1578 for (j = 0; j < client_len; )
1580 if (server[i] == client[j] &&
1581 memcmp(&server[i+1], &client[j+1], server[i]) == 0)
1583 /* We found a match */
1584 result = &server[i];
1585 status = OPENSSL_NPN_NEGOTIATED;
1595 /* There's no overlap between our protocols and the server's list. */
1597 status = OPENSSL_NPN_NO_OVERLAP;
1600 *out = (unsigned char *) result + 1;
1601 *outlen = result[0];
1605 /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's
1606 * requested protocol for this connection and returns 0. If the client didn't
1607 * request any protocol, then *data is set to NULL.
1609 * Note that the client can request any protocol it chooses. The value returned
1610 * from this function need not be a member of the list of supported protocols
1611 * provided by the callback.
1613 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len)
1615 *data = s->next_proto_negotiated;
1619 *len = s->next_proto_negotiated_len;
1623 /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
1624 * TLS server needs a list of supported protocols for Next Protocol
1625 * Negotiation. The returned list must be in wire format. The list is returned
1626 * by setting |out| to point to it and |outlen| to its length. This memory will
1627 * not be modified, but one should assume that the SSL* keeps a reference to
1630 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no
1631 * such extension will be included in the ServerHello. */
1632 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)
1634 ctx->next_protos_advertised_cb = cb;
1635 ctx->next_protos_advertised_cb_arg = arg;
1638 /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1639 * client needs to select a protocol from the server's provided list. |out|
1640 * must be set to point to the selected protocol (which may be within |in|).
1641 * The length of the protocol name must be written into |outlen|. The server's
1642 * advertised protocols are provided in |in| and |inlen|. The callback can
1643 * assume that |in| is syntactically valid.
1645 * The client must select a protocol. It is fatal to the connection if this
1646 * callback returns a value other than SSL_TLSEXT_ERR_OK.
1648 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)
1650 ctx->next_proto_select_cb = cb;
1651 ctx->next_proto_select_cb_arg = arg;
1657 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1658 const char *label, size_t llen, const unsigned char *p, size_t plen,
1661 if (s->version < TLS1_VERSION)
1664 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1669 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1674 ((unsigned int) a->session_id[0] )|
1675 ((unsigned int) a->session_id[1]<< 8L)|
1676 ((unsigned long)a->session_id[2]<<16L)|
1677 ((unsigned long)a->session_id[3]<<24L);
1681 /* NB: If this function (or indeed the hash function which uses a sort of
1682 * coarser function than this one) is changed, ensure
1683 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1684 * able to construct an SSL_SESSION that will collide with any existing session
1685 * with a matching session ID. */
1686 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1688 if (a->ssl_version != b->ssl_version)
1690 if (a->session_id_length != b->session_id_length)
1692 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1695 /* These wrapper functions should remain rather than redeclaring
1696 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1697 * variable. The reason is that the functions aren't static, they're exposed via
1699 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1700 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1702 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1708 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1713 if (FIPS_mode() && (meth->version < TLS1_VERSION))
1715 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1720 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1722 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1725 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1729 memset(ret,0,sizeof(SSL_CTX));
1733 ret->cert_store=NULL;
1734 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1735 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1736 ret->session_cache_head=NULL;
1737 ret->session_cache_tail=NULL;
1739 /* We take the system default */
1740 ret->session_timeout=meth->get_timeout();
1742 ret->new_session_cb=0;
1743 ret->remove_session_cb=0;
1744 ret->get_session_cb=0;
1745 ret->generate_session_id=0;
1747 memset((char *)&ret->stats,0,sizeof(ret->stats));
1750 ret->quiet_shutdown=0;
1752 /* ret->cipher=NULL;*/
1753 /* ret->s2->challenge=NULL;
1754 ret->master_key=NULL;
1756 ret->s2->conn_id=NULL; */
1758 ret->info_callback=NULL;
1760 ret->app_verify_callback=0;
1761 ret->app_verify_arg=NULL;
1763 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1765 ret->msg_callback=0;
1766 ret->msg_callback_arg=NULL;
1767 ret->verify_mode=SSL_VERIFY_NONE;
1769 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1771 ret->sid_ctx_length=0;
1772 ret->default_verify_callback=NULL;
1773 if ((ret->cert=ssl_cert_new()) == NULL)
1776 ret->default_passwd_callback=0;
1777 ret->default_passwd_callback_userdata=NULL;
1778 ret->client_cert_cb=0;
1779 ret->app_gen_cookie_cb=0;
1780 ret->app_verify_cookie_cb=0;
1782 ret->sessions=lh_SSL_SESSION_new();
1783 if (ret->sessions == NULL) goto err;
1784 ret->cert_store=X509_STORE_new();
1785 if (ret->cert_store == NULL) goto err;
1787 ssl_create_cipher_list(ret->method,
1788 &ret->cipher_list,&ret->cipher_list_by_id,
1789 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1790 if (ret->cipher_list == NULL
1791 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1793 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1797 ret->param = X509_VERIFY_PARAM_new();
1801 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1803 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1806 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1808 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1811 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1813 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1817 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1820 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1822 ret->extra_certs=NULL;
1823 ret->comp_methods=SSL_COMP_get_compression_methods();
1825 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1827 #ifndef OPENSSL_NO_TLSEXT
1828 ret->tlsext_servername_callback = 0;
1829 ret->tlsext_servername_arg = NULL;
1830 /* Setup RFC4507 ticket keys */
1831 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1832 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1833 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1834 ret->options |= SSL_OP_NO_TICKET;
1836 ret->tlsext_status_cb = 0;
1837 ret->tlsext_status_arg = NULL;
1839 # ifndef OPENSSL_NO_NEXTPROTONEG
1840 ret->next_protos_advertised_cb = 0;
1841 ret->next_proto_select_cb = 0;
1844 #ifndef OPENSSL_NO_PSK
1845 ret->psk_identity_hint=NULL;
1846 ret->psk_client_callback=NULL;
1847 ret->psk_server_callback=NULL;
1849 #ifndef OPENSSL_NO_SRP
1850 SSL_CTX_SRP_CTX_init(ret);
1852 #ifndef OPENSSL_NO_BUF_FREELISTS
1853 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1854 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1855 if (!ret->rbuf_freelist)
1857 ret->rbuf_freelist->chunklen = 0;
1858 ret->rbuf_freelist->len = 0;
1859 ret->rbuf_freelist->head = NULL;
1860 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1861 if (!ret->wbuf_freelist)
1863 OPENSSL_free(ret->rbuf_freelist);
1866 ret->wbuf_freelist->chunklen = 0;
1867 ret->wbuf_freelist->len = 0;
1868 ret->wbuf_freelist->head = NULL;
1870 #ifndef OPENSSL_NO_ENGINE
1871 ret->client_cert_engine = NULL;
1872 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1873 #define eng_strx(x) #x
1874 #define eng_str(x) eng_strx(x)
1875 /* Use specific client engine automatically... ignore errors */
1878 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1882 ENGINE_load_builtin_engines();
1883 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1885 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1890 /* Default is to connect to non-RI servers. When RI is more widely
1891 * deployed might change this.
1893 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1897 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1899 if (ret != NULL) SSL_CTX_free(ret);
1904 static void SSL_COMP_free(SSL_COMP *comp)
1905 { OPENSSL_free(comp); }
1908 #ifndef OPENSSL_NO_BUF_FREELISTS
1910 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1912 SSL3_BUF_FREELIST_ENTRY *ent, *next;
1913 for (ent = list->head; ent; ent = next)
1922 void SSL_CTX_free(SSL_CTX *a)
1926 if (a == NULL) return;
1928 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1930 REF_PRINT("SSL_CTX",a);
1936 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1942 X509_VERIFY_PARAM_free(a->param);
1945 * Free internal session cache. However: the remove_cb() may reference
1946 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1947 * after the sessions were flushed.
1948 * As the ex_data handling routines might also touch the session cache,
1949 * the most secure solution seems to be: empty (flush) the cache, then
1950 * free ex_data, then finally free the cache.
1951 * (See ticket [openssl.org #212].)
1953 if (a->sessions != NULL)
1954 SSL_CTX_flush_sessions(a,0);
1956 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1958 if (a->sessions != NULL)
1959 lh_SSL_SESSION_free(a->sessions);
1961 if (a->cert_store != NULL)
1962 X509_STORE_free(a->cert_store);
1963 if (a->cipher_list != NULL)
1964 sk_SSL_CIPHER_free(a->cipher_list);
1965 if (a->cipher_list_by_id != NULL)
1966 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1967 if (a->cert != NULL)
1968 ssl_cert_free(a->cert);
1969 if (a->client_CA != NULL)
1970 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1971 if (a->extra_certs != NULL)
1972 sk_X509_pop_free(a->extra_certs,X509_free);
1973 #if 0 /* This should never be done, since it removes a global database */
1974 if (a->comp_methods != NULL)
1975 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1977 a->comp_methods = NULL;
1980 if (a->srtp_profiles)
1981 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
1983 #ifndef OPENSSL_NO_PSK
1984 if (a->psk_identity_hint)
1985 OPENSSL_free(a->psk_identity_hint);
1987 #ifndef OPENSSL_NO_SRP
1988 SSL_CTX_SRP_CTX_free(a);
1990 #ifndef OPENSSL_NO_ENGINE
1991 if (a->client_cert_engine)
1992 ENGINE_finish(a->client_cert_engine);
1995 #ifndef OPENSSL_NO_BUF_FREELISTS
1996 if (a->wbuf_freelist)
1997 ssl_buf_freelist_free(a->wbuf_freelist);
1998 if (a->rbuf_freelist)
1999 ssl_buf_freelist_free(a->rbuf_freelist);
2001 #ifndef OPENSSL_NO_TLSEXT
2002 # ifndef OPENSSL_NO_EC
2003 if (a->tlsext_ecpointformatlist)
2004 OPENSSL_free(a->tlsext_ecpointformatlist);
2005 if (a->tlsext_ellipticcurvelist)
2006 OPENSSL_free(a->tlsext_ellipticcurvelist);
2007 # endif /* OPENSSL_NO_EC */
2013 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2015 ctx->default_passwd_callback=cb;
2018 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
2020 ctx->default_passwd_callback_userdata=u;
2023 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
2025 ctx->app_verify_callback=cb;
2026 ctx->app_verify_arg=arg;
2029 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
2031 ctx->verify_mode=mode;
2032 ctx->default_verify_callback=cb;
2035 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
2037 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2040 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2043 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
2044 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
2045 int rsa_tmp_export,dh_tmp_export,kl;
2046 unsigned long mask_k,mask_a,emask_k,emask_a;
2047 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
2048 #ifndef OPENSSL_NO_ECDH
2052 EVP_PKEY *ecc_pkey = NULL;
2053 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2055 if (c == NULL) return;
2057 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
2059 #ifndef OPENSSL_NO_RSA
2060 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2061 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
2062 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
2064 rsa_tmp=rsa_tmp_export=0;
2066 #ifndef OPENSSL_NO_DH
2067 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
2068 dh_tmp_export=(c->dh_tmp_cb != NULL ||
2069 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
2071 dh_tmp=dh_tmp_export=0;
2074 #ifndef OPENSSL_NO_ECDH
2075 have_ecdh_tmp=(c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2077 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
2078 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
2079 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2080 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2081 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
2082 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2083 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
2084 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
2085 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
2086 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2087 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
2088 /* FIX THIS EAY EAY EAY */
2089 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
2090 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2091 cpk= &(c->pkeys[SSL_PKEY_ECC]);
2092 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
2101 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2102 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
2103 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
2106 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2107 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2108 mask_k |= SSL_kGOST;
2109 mask_a |= SSL_aGOST01;
2111 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2112 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2113 mask_k |= SSL_kGOST;
2114 mask_a |= SSL_aGOST94;
2117 if (rsa_enc || (rsa_tmp && rsa_sign))
2119 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2123 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
2124 if ( (dh_tmp || dh_rsa || dh_dsa) &&
2125 (rsa_enc || rsa_sign || dsa_sign))
2127 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2128 (rsa_enc || rsa_sign || dsa_sign))
2138 if (dh_rsa) mask_k|=SSL_kDHr;
2139 if (dh_rsa_export) emask_k|=SSL_kDHr;
2141 if (dh_dsa) mask_k|=SSL_kDHd;
2142 if (dh_dsa_export) emask_k|=SSL_kDHd;
2144 if (emask_k & (SSL_kDHr|SSL_kDHd))
2147 if (rsa_enc || rsa_sign)
2162 #ifndef OPENSSL_NO_KRB5
2169 /* An ECC certificate may be usable for ECDH and/or
2170 * ECDSA cipher suites depending on the key usage extension.
2174 /* This call populates extension flags (ex_flags) */
2175 x = (c->pkeys[SSL_PKEY_ECC]).x509;
2176 X509_check_purpose(x, -1, 0);
2177 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2178 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2179 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2180 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2181 ecc_pkey = X509_get_pubkey(x);
2182 ecc_pkey_size = (ecc_pkey != NULL) ?
2183 EVP_PKEY_bits(ecc_pkey) : 0;
2184 EVP_PKEY_free(ecc_pkey);
2185 if ((x->sig_alg) && (x->sig_alg->algorithm))
2187 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2188 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2190 #ifndef OPENSSL_NO_ECDH
2194 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa)
2198 if (ecc_pkey_size <= 163)
2200 emask_k|=SSL_kECDHr;
2205 if (pk_nid == NID_X9_62_id_ecPublicKey)
2209 if (ecc_pkey_size <= 163)
2211 emask_k|=SSL_kECDHe;
2217 #ifndef OPENSSL_NO_ECDSA
2221 emask_a|=SSL_aECDSA;
2226 #ifndef OPENSSL_NO_ECDH
2230 emask_k|=SSL_kEECDH;
2234 #ifndef OPENSSL_NO_PSK
2237 emask_k |= SSL_kPSK;
2238 emask_a |= SSL_aPSK;
2243 c->export_mask_k=emask_k;
2244 c->export_mask_a=emask_a;
2248 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2249 #define ku_reject(x, usage) \
2250 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2252 #ifndef OPENSSL_NO_EC
2254 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2256 unsigned long alg_k, alg_a;
2257 EVP_PKEY *pkey = NULL;
2259 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2260 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2262 alg_k = cs->algorithm_mkey;
2263 alg_a = cs->algorithm_auth;
2265 if (SSL_C_IS_EXPORT(cs))
2267 /* ECDH key length in export ciphers must be <= 163 bits */
2268 pkey = X509_get_pubkey(x);
2269 if (pkey == NULL) return 0;
2270 keysize = EVP_PKEY_bits(pkey);
2271 EVP_PKEY_free(pkey);
2272 if (keysize > 163) return 0;
2275 /* This call populates the ex_flags field correctly */
2276 X509_check_purpose(x, -1, 0);
2277 if ((x->sig_alg) && (x->sig_alg->algorithm))
2279 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2280 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2282 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2284 /* key usage, if present, must allow key agreement */
2285 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2287 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2290 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION)
2292 /* signature alg must be ECDSA */
2293 if (pk_nid != NID_X9_62_id_ecPublicKey)
2295 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2299 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION)
2301 /* signature alg must be RSA */
2303 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa)
2305 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2310 if (alg_a & SSL_aECDSA)
2312 /* key usage, if present, must allow signing */
2313 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2315 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2320 return 1; /* all checks are ok */
2325 /* THIS NEEDS CLEANING UP */
2326 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2328 unsigned long alg_k,alg_a;
2333 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2335 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2336 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2338 if (alg_k & (SSL_kECDHr|SSL_kECDHe))
2340 /* we don't need to look at SSL_kEECDH
2341 * since no certificate is needed for
2342 * anon ECDH and for authenticated
2343 * EECDH, the check for the auth
2344 * algorithm will set i correctly
2345 * NOTE: For ECDH-RSA, we need an ECC
2346 * not an RSA cert but for EECDH-RSA
2347 * we need an RSA cert. Placing the
2348 * checks for SSL_kECDH before RSA
2349 * checks ensures the correct cert is chosen.
2353 else if (alg_a & SSL_aECDSA)
2357 else if (alg_k & SSL_kDHr)
2359 else if (alg_k & SSL_kDHd)
2361 else if (alg_a & SSL_aDSS)
2362 i=SSL_PKEY_DSA_SIGN;
2363 else if (alg_a & SSL_aRSA)
2365 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2366 i=SSL_PKEY_RSA_SIGN;
2370 else if (alg_a & SSL_aKRB5)
2372 /* VRS something else here? */
2375 else if (alg_a & SSL_aGOST94)
2377 else if (alg_a & SSL_aGOST01)
2379 else /* if (alg_a & SSL_aNULL) */
2381 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY,ERR_R_INTERNAL_ERROR);
2384 if (c->pkeys[i].x509 == NULL) return(NULL);
2386 return(&c->pkeys[i]);
2389 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd)
2391 unsigned long alg_a;
2395 alg_a = cipher->algorithm_auth;
2398 if ((alg_a & SSL_aDSS) &&
2399 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2400 idx = SSL_PKEY_DSA_SIGN;
2401 else if (alg_a & SSL_aRSA)
2403 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2404 idx = SSL_PKEY_RSA_SIGN;
2405 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2406 idx = SSL_PKEY_RSA_ENC;
2408 else if ((alg_a & SSL_aECDSA) &&
2409 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2413 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2417 *pmd = c->pkeys[idx].digest;
2418 return c->pkeys[idx].privatekey;
2421 void ssl_update_cache(SSL *s,int mode)
2425 /* If the session_id_length is 0, we are not supposed to cache it,
2426 * and it would be rather hard to do anyway :-) */
2427 if (s->session->session_id_length == 0) return;
2429 i=s->session_ctx->session_cache_mode;
2430 if ((i & mode) && (!s->hit)
2431 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2432 || SSL_CTX_add_session(s->session_ctx,s->session))
2433 && (s->session_ctx->new_session_cb != NULL))
2435 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2436 if (!s->session_ctx->new_session_cb(s,s->session))
2437 SSL_SESSION_free(s->session);
2440 /* auto flush every 255 connections */
2441 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2442 ((i & mode) == mode))
2444 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2445 ?s->session_ctx->stats.sess_connect_good
2446 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2448 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2453 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2458 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2463 if (s->method != meth)
2465 if (s->handshake_func != NULL)
2466 conn=(s->handshake_func == s->method->ssl_connect);
2468 if (s->method->version == meth->version)
2472 s->method->ssl_free(s);
2474 ret=s->method->ssl_new(s);
2478 s->handshake_func=meth->ssl_connect;
2480 s->handshake_func=meth->ssl_accept;
2485 int SSL_get_error(const SSL *s,int i)
2491 if (i > 0) return(SSL_ERROR_NONE);
2493 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2494 * etc, where we do encode the error */
2495 if ((l=ERR_peek_error()) != 0)
2497 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2498 return(SSL_ERROR_SYSCALL);
2500 return(SSL_ERROR_SSL);
2503 if ((i < 0) && SSL_want_read(s))
2505 bio=SSL_get_rbio(s);
2506 if (BIO_should_read(bio))
2507 return(SSL_ERROR_WANT_READ);
2508 else if (BIO_should_write(bio))
2509 /* This one doesn't make too much sense ... We never try
2510 * to write to the rbio, and an application program where
2511 * rbio and wbio are separate couldn't even know what it
2513 * However if we ever set s->rwstate incorrectly
2514 * (so that we have SSL_want_read(s) instead of
2515 * SSL_want_write(s)) and rbio and wbio *are* the same,
2516 * this test works around that bug; so it might be safer
2518 return(SSL_ERROR_WANT_WRITE);
2519 else if (BIO_should_io_special(bio))
2521 reason=BIO_get_retry_reason(bio);
2522 if (reason == BIO_RR_CONNECT)
2523 return(SSL_ERROR_WANT_CONNECT);
2524 else if (reason == BIO_RR_ACCEPT)
2525 return(SSL_ERROR_WANT_ACCEPT);
2527 return(SSL_ERROR_SYSCALL); /* unknown */
2531 if ((i < 0) && SSL_want_write(s))
2533 bio=SSL_get_wbio(s);
2534 if (BIO_should_write(bio))
2535 return(SSL_ERROR_WANT_WRITE);
2536 else if (BIO_should_read(bio))
2537 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2538 return(SSL_ERROR_WANT_READ);
2539 else if (BIO_should_io_special(bio))
2541 reason=BIO_get_retry_reason(bio);
2542 if (reason == BIO_RR_CONNECT)
2543 return(SSL_ERROR_WANT_CONNECT);
2544 else if (reason == BIO_RR_ACCEPT)
2545 return(SSL_ERROR_WANT_ACCEPT);
2547 return(SSL_ERROR_SYSCALL);
2550 if ((i < 0) && SSL_want_x509_lookup(s))
2552 return(SSL_ERROR_WANT_X509_LOOKUP);
2557 if (s->version == SSL2_VERSION)
2559 /* assume it is the socket being closed */
2560 return(SSL_ERROR_ZERO_RETURN);
2564 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2565 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2566 return(SSL_ERROR_ZERO_RETURN);
2569 return(SSL_ERROR_SYSCALL);
2572 int SSL_do_handshake(SSL *s)
2576 if (s->handshake_func == NULL)
2578 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2582 s->method->ssl_renegotiate_check(s);
2584 if (SSL_in_init(s) || SSL_in_before(s))
2586 ret=s->handshake_func(s);
2591 /* For the next 2 functions, SSL_clear() sets shutdown and so
2592 * one of these calls will reset it */
2593 void SSL_set_accept_state(SSL *s)
2597 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2598 s->handshake_func=s->method->ssl_accept;
2599 /* clear the current cipher */
2600 ssl_clear_cipher_ctx(s);
2601 ssl_clear_hash_ctx(&s->read_hash);
2602 ssl_clear_hash_ctx(&s->write_hash);
2605 void SSL_set_connect_state(SSL *s)
2609 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2610 s->handshake_func=s->method->ssl_connect;
2611 /* clear the current cipher */
2612 ssl_clear_cipher_ctx(s);
2613 ssl_clear_hash_ctx(&s->read_hash);
2614 ssl_clear_hash_ctx(&s->write_hash);
2617 int ssl_undefined_function(SSL *s)
2619 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2623 int ssl_undefined_void_function(void)
2625 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2629 int ssl_undefined_const_function(const SSL *s)
2631 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2635 SSL_METHOD *ssl_bad_method(int ver)
2637 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2641 const char *SSL_get_version(const SSL *s)
2643 if (s->version == TLS1_2_VERSION)
2645 else if (s->version == TLS1_1_VERSION)
2647 else if (s->version == TLS1_VERSION)
2649 else if (s->version == SSL3_VERSION)
2651 else if (s->version == SSL2_VERSION)
2657 SSL *SSL_dup(SSL *s)
2659 STACK_OF(X509_NAME) *sk;
2664 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2667 ret->version = s->version;
2668 ret->type = s->type;
2669 ret->method = s->method;
2671 if (s->session != NULL)
2673 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2674 SSL_copy_session_id(ret,s);
2678 /* No session has been established yet, so we have to expect
2679 * that s->cert or ret->cert will be changed later --
2680 * they should not both point to the same object,
2681 * and thus we can't use SSL_copy_session_id. */
2683 ret->method->ssl_free(ret);
2684 ret->method = s->method;
2685 ret->method->ssl_new(ret);
2687 if (s->cert != NULL)
2689 if (ret->cert != NULL)
2691 ssl_cert_free(ret->cert);
2693 ret->cert = ssl_cert_dup(s->cert);
2694 if (ret->cert == NULL)
2698 SSL_set_session_id_context(ret,
2699 s->sid_ctx, s->sid_ctx_length);
2702 ret->options=s->options;
2704 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2705 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2706 ret->msg_callback = s->msg_callback;
2707 ret->msg_callback_arg = s->msg_callback_arg;
2708 SSL_set_verify(ret,SSL_get_verify_mode(s),
2709 SSL_get_verify_callback(s));
2710 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2711 ret->generate_session_id = s->generate_session_id;
2713 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2715 ret->debug=s->debug;
2717 /* copy app data, a little dangerous perhaps */
2718 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2721 /* setup rbio, and wbio */
2722 if (s->rbio != NULL)
2724 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2727 if (s->wbio != NULL)
2729 if (s->wbio != s->rbio)
2731 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2735 ret->wbio=ret->rbio;
2737 ret->rwstate = s->rwstate;
2738 ret->in_handshake = s->in_handshake;
2739 ret->handshake_func = s->handshake_func;
2740 ret->server = s->server;
2741 ret->renegotiate = s->renegotiate;
2742 ret->new_session = s->new_session;
2743 ret->quiet_shutdown = s->quiet_shutdown;
2744 ret->shutdown=s->shutdown;
2745 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2746 ret->rstate=s->rstate;
2747 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2750 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2752 /* dup the cipher_list and cipher_list_by_id stacks */
2753 if (s->cipher_list != NULL)
2755 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2758 if (s->cipher_list_by_id != NULL)
2759 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2763 /* Dup the client_CA list */
2764 if (s->client_CA != NULL)
2766 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2768 for (i=0; i<sk_X509_NAME_num(sk); i++)
2770 xn=sk_X509_NAME_value(sk,i);
2771 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2782 if (ret != NULL) SSL_free(ret);
2788 void ssl_clear_cipher_ctx(SSL *s)
2790 if (s->enc_read_ctx != NULL)
2792 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2793 OPENSSL_free(s->enc_read_ctx);
2794 s->enc_read_ctx=NULL;
2796 if (s->enc_write_ctx != NULL)
2798 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2799 OPENSSL_free(s->enc_write_ctx);
2800 s->enc_write_ctx=NULL;
2802 #ifndef OPENSSL_NO_COMP
2803 if (s->expand != NULL)
2805 COMP_CTX_free(s->expand);
2808 if (s->compress != NULL)
2810 COMP_CTX_free(s->compress);
2816 /* Fix this function so that it takes an optional type parameter */
2817 X509 *SSL_get_certificate(const SSL *s)
2819 if (s->cert != NULL)
2820 return(s->cert->key->x509);
2825 /* Fix this function so that it takes an optional type parameter */
2826 EVP_PKEY *SSL_get_privatekey(SSL *s)
2828 if (s->cert != NULL)
2829 return(s->cert->key->privatekey);
2834 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2836 if ((s->session != NULL) && (s->session->cipher != NULL))
2837 return(s->session->cipher);
2840 #ifdef OPENSSL_NO_COMP
2841 const void *SSL_get_current_compression(SSL *s)
2845 const void *SSL_get_current_expansion(SSL *s)
2851 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2853 if (s->compress != NULL)
2854 return(s->compress->meth);
2858 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2860 if (s->expand != NULL)
2861 return(s->expand->meth);
2866 int ssl_init_wbio_buffer(SSL *s,int push)
2870 if (s->bbio == NULL)
2872 bbio=BIO_new(BIO_f_buffer());
2873 if (bbio == NULL) return(0);
2879 if (s->bbio == s->wbio)
2880 s->wbio=BIO_pop(s->wbio);
2882 (void)BIO_reset(bbio);
2883 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2884 if (!BIO_set_read_buffer_size(bbio,1))
2886 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2891 if (s->wbio != bbio)
2892 s->wbio=BIO_push(bbio,s->wbio);
2896 if (s->wbio == bbio)
2897 s->wbio=BIO_pop(bbio);
2902 void ssl_free_wbio_buffer(SSL *s)
2904 if (s->bbio == NULL) return;
2906 if (s->bbio == s->wbio)
2908 /* remove buffering */
2909 s->wbio=BIO_pop(s->wbio);
2910 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2911 assert(s->wbio != NULL);
2918 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2920 ctx->quiet_shutdown=mode;
2923 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2925 return(ctx->quiet_shutdown);
2928 void SSL_set_quiet_shutdown(SSL *s,int mode)
2930 s->quiet_shutdown=mode;
2933 int SSL_get_quiet_shutdown(const SSL *s)
2935 return(s->quiet_shutdown);
2938 void SSL_set_shutdown(SSL *s,int mode)
2943 int SSL_get_shutdown(const SSL *s)
2945 return(s->shutdown);
2948 int SSL_version(const SSL *s)
2953 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2958 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2960 if (ssl->ctx == ctx)
2962 #ifndef OPENSSL_NO_TLSEXT
2964 ctx = ssl->initial_ctx;
2966 if (ssl->cert != NULL)
2967 ssl_cert_free(ssl->cert);
2968 ssl->cert = ssl_cert_dup(ctx->cert);
2969 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2970 if (ssl->ctx != NULL)
2971 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2976 #ifndef OPENSSL_NO_STDIO
2977 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2979 return(X509_STORE_set_default_paths(ctx->cert_store));
2982 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2985 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2989 void SSL_set_info_callback(SSL *ssl,
2990 void (*cb)(const SSL *ssl,int type,int val))
2992 ssl->info_callback=cb;
2995 /* One compiler (Diab DCC) doesn't like argument names in returned
2996 function pointer. */
2997 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2999 return ssl->info_callback;
3002 int SSL_state(const SSL *ssl)
3007 void SSL_set_state(SSL *ssl, int state)
3012 void SSL_set_verify_result(SSL *ssl,long arg)
3014 ssl->verify_result=arg;
3017 long SSL_get_verify_result(const SSL *ssl)
3019 return(ssl->verify_result);
3022 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3023 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3025 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3026 new_func, dup_func, free_func);
3029 int SSL_set_ex_data(SSL *s,int idx,void *arg)
3031 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3034 void *SSL_get_ex_data(const SSL *s,int idx)
3036 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3039 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3040 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3042 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3043 new_func, dup_func, free_func);
3046 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
3048 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3051 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
3053 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3061 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3063 return(ctx->cert_store);
3066 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
3068 if (ctx->cert_store != NULL)
3069 X509_STORE_free(ctx->cert_store);
3070 ctx->cert_store=store;
3073 int SSL_want(const SSL *s)
3079 * \brief Set the callback for generating temporary RSA keys.
3080 * \param ctx the SSL context.
3081 * \param cb the callback
3084 #ifndef OPENSSL_NO_RSA
3085 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
3089 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3092 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
3096 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3102 * \brief The RSA temporary key callback function.
3103 * \param ssl the SSL session.
3104 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3105 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3106 * of the required key in bits.
3107 * \return the temporary RSA key.
3108 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3111 RSA *cb(SSL *ssl,int is_export,int keylength)
3116 * \brief Set the callback for generating temporary DH keys.
3117 * \param ctx the SSL context.
3118 * \param dh the callback
3121 #ifndef OPENSSL_NO_DH
3122 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
3125 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3128 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
3131 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3135 #ifndef OPENSSL_NO_ECDH
3136 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3139 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3142 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3145 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3149 #ifndef OPENSSL_NO_PSK
3150 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3152 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3154 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3157 if (ctx->psk_identity_hint != NULL)
3158 OPENSSL_free(ctx->psk_identity_hint);
3159 if (identity_hint != NULL)
3161 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3162 if (ctx->psk_identity_hint == NULL)
3166 ctx->psk_identity_hint = NULL;
3170 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3175 if (s->session == NULL)
3176 return 1; /* session not created yet, ignored */
3178 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3180 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3183 if (s->session->psk_identity_hint != NULL)
3184 OPENSSL_free(s->session->psk_identity_hint);
3185 if (identity_hint != NULL)
3187 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3188 if (s->session->psk_identity_hint == NULL)
3192 s->session->psk_identity_hint = NULL;
3196 const char *SSL_get_psk_identity_hint(const SSL *s)
3198 if (s == NULL || s->session == NULL)
3200 return(s->session->psk_identity_hint);
3203 const char *SSL_get_psk_identity(const SSL *s)
3205 if (s == NULL || s->session == NULL)
3207 return(s->session->psk_identity);
3210 void SSL_set_psk_client_callback(SSL *s,
3211 unsigned int (*cb)(SSL *ssl, const char *hint,
3212 char *identity, unsigned int max_identity_len, unsigned char *psk,
3213 unsigned int max_psk_len))
3215 s->psk_client_callback = cb;
3218 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3219 unsigned int (*cb)(SSL *ssl, const char *hint,
3220 char *identity, unsigned int max_identity_len, unsigned char *psk,
3221 unsigned int max_psk_len))
3223 ctx->psk_client_callback = cb;
3226 void SSL_set_psk_server_callback(SSL *s,
3227 unsigned int (*cb)(SSL *ssl, const char *identity,
3228 unsigned char *psk, unsigned int max_psk_len))
3230 s->psk_server_callback = cb;
3233 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3234 unsigned int (*cb)(SSL *ssl, const char *identity,
3235 unsigned char *psk, unsigned int max_psk_len))
3237 ctx->psk_server_callback = cb;
3241 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))
3243 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3245 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))
3247 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3250 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
3251 int (*cb)(SSL *ssl, int is_forward_secure))
3253 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3254 (void (*)(void))cb);
3256 void SSL_set_not_resumable_session_callback(SSL *ssl,
3257 int (*cb)(SSL *ssl, int is_forward_secure))
3259 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
3260 (void (*)(void))cb);
3263 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3264 * vairable, freeing EVP_MD_CTX previously stored in that variable, if
3265 * any. If EVP_MD pointer is passed, initializes ctx with this md
3266 * Returns newly allocated ctx;
3269 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
3271 ssl_clear_hash_ctx(hash);
3272 *hash = EVP_MD_CTX_create();
3273 if (md) EVP_DigestInit_ex(*hash,md,NULL);
3276 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3279 if (*hash) EVP_MD_CTX_destroy(*hash);
3283 void SSL_set_debug(SSL *s, int debug)
3288 int SSL_cache_hit(SSL *s)
3293 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3294 #include "../crypto/bio/bss_file.c"
3297 IMPLEMENT_STACK_OF(SSL_CIPHER)
3298 IMPLEMENT_STACK_OF(SSL_COMP)
3299 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,