1 /*! \file ssl/ssl_lib.c
2 * \brief Version independent SSL functions.
4 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
7 * This package is an SSL implementation written
8 * by Eric Young (eay@cryptsoft.com).
9 * The implementation was written so as to conform with Netscapes SSL.
11 * This library is free for commercial and non-commercial use as long as
12 * the following conditions are aheared to. The following conditions
13 * apply to all code found in this distribution, be it the RC4, RSA,
14 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
15 * included with this distribution is covered by the same copyright terms
16 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
18 * Copyright remains Eric Young's, and as such any Copyright notices in
19 * the code are not to be removed.
20 * If this package is used in a product, Eric Young should be given attribution
21 * as the author of the parts of the library used.
22 * This can be in the form of a textual message at program startup or
23 * in documentation (online or textual) provided with the package.
25 * Redistribution and use in source and binary forms, with or without
26 * modification, are permitted provided that the following conditions
28 * 1. Redistributions of source code must retain the copyright
29 * notice, this list of conditions and the following disclaimer.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. All advertising materials mentioning features or use of this software
34 * must display the following acknowledgement:
35 * "This product includes cryptographic software written by
36 * Eric Young (eay@cryptsoft.com)"
37 * The word 'cryptographic' can be left out if the rouines from the library
38 * being used are not cryptographic related :-).
39 * 4. If you include any Windows specific code (or a derivative thereof) from
40 * the apps directory (application code) you must include an acknowledgement:
41 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
43 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
47 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * The licence and distribution terms for any publically available version or
56 * derivative of this code cannot be changed. i.e. this code cannot simply be
57 * copied and put under another distribution licence
58 * [including the GNU Public Licence.]
60 /* ====================================================================
61 * Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
63 * Redistribution and use in source and binary forms, with or without
64 * modification, are permitted provided that the following conditions
67 * 1. Redistributions of source code must retain the above copyright
68 * notice, this list of conditions and the following disclaimer.
70 * 2. Redistributions in binary form must reproduce the above copyright
71 * notice, this list of conditions and the following disclaimer in
72 * the documentation and/or other materials provided with the
75 * 3. All advertising materials mentioning features or use of this
76 * software must display the following acknowledgment:
77 * "This product includes software developed by the OpenSSL Project
78 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
80 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
81 * endorse or promote products derived from this software without
82 * prior written permission. For written permission, please contact
83 * openssl-core@openssl.org.
85 * 5. Products derived from this software may not be called "OpenSSL"
86 * nor may "OpenSSL" appear in their names without prior written
87 * permission of the OpenSSL Project.
89 * 6. Redistributions of any form whatsoever must retain the following
91 * "This product includes software developed by the OpenSSL Project
92 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
94 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
95 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
96 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
97 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
98 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
99 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
100 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
101 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
102 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
103 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
104 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
105 * OF THE POSSIBILITY OF SUCH DAMAGE.
106 * ====================================================================
108 * This product includes cryptographic software written by Eric Young
109 * (eay@cryptsoft.com). This product includes software written by Tim
110 * Hudson (tjh@cryptsoft.com).
113 /* ====================================================================
114 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
115 * ECC cipher suite support in OpenSSL originally developed by
116 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
118 /* ====================================================================
119 * Copyright 2005 Nokia. All rights reserved.
121 * The portions of the attached software ("Contribution") is developed by
122 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
125 * The Contribution, originally written by Mika Kousa and Pasi Eronen of
126 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
127 * support (see RFC 4279) to OpenSSL.
129 * No patent licenses or other rights except those expressly stated in
130 * the OpenSSL open source license shall be deemed granted or received
131 * expressly, by implication, estoppel, or otherwise.
133 * No assurances are provided by Nokia that the Contribution does not
134 * infringe the patent or other intellectual property rights of any third
135 * party or that the license provides you with all the necessary rights
136 * to make use of the Contribution.
138 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
139 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
140 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
141 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
149 #include "ssl_locl.h"
150 #include "kssl_lcl.h"
151 #include <openssl/objects.h>
152 #include <openssl/lhash.h>
153 #include <openssl/x509v3.h>
154 #include <openssl/rand.h>
155 #include <openssl/ocsp.h>
156 #ifndef OPENSSL_NO_DH
157 #include <openssl/dh.h>
159 #ifndef OPENSSL_NO_ENGINE
160 #include <openssl/engine.h>
163 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
165 SSL3_ENC_METHOD ssl3_undef_enc_method={
166 /* evil casts, but these functions are only called if there's a library bug */
167 (int (*)(SSL *,int))ssl_undefined_function,
168 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
169 ssl_undefined_function,
170 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
171 (int (*)(SSL*, int))ssl_undefined_function,
172 (int (*)(SSL *, const char*, int, unsigned char *))ssl_undefined_function,
173 0, /* finish_mac_length */
174 (int (*)(SSL *, int, unsigned char *))ssl_undefined_function,
175 NULL, /* client_finished_label */
176 0, /* client_finished_label_len */
177 NULL, /* server_finished_label */
178 0, /* server_finished_label_len */
179 (int (*)(int))ssl_undefined_function,
180 (int (*)(SSL *, unsigned char *, size_t, const char *,
181 size_t, const unsigned char *, size_t,
182 int use_context)) ssl_undefined_function,
185 int SSL_clear(SSL *s)
188 if (s->method == NULL)
190 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
194 if (ssl_clear_bad_session(s))
196 SSL_SESSION_free(s->session);
204 #if 0 /* Disabled since version 1.10 of this file (early return not
205 * needed because SSL_clear is not called when doing renegotiation) */
206 /* This is set if we are doing dynamic renegotiation so keep
207 * the old cipher. It is sort of a SSL_clear_lite :-) */
208 if (s->renegotiate) return(1);
212 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
219 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
221 s->version=s->method->version;
222 s->client_version=s->version;
223 s->rwstate=SSL_NOTHING;
224 s->rstate=SSL_ST_READ_HEADER;
226 s->read_ahead=s->ctx->read_ahead;
229 if (s->init_buf != NULL)
231 BUF_MEM_free(s->init_buf);
235 ssl_clear_cipher_ctx(s);
236 ssl_clear_hash_ctx(&s->read_hash);
237 ssl_clear_hash_ctx(&s->write_hash);
242 /* Check to see if we were changed into a different method, if
243 * so, revert back if we are not doing session-id reuse. */
244 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
246 s->method->ssl_free(s);
247 s->method=s->ctx->method;
248 if (!s->method->ssl_new(s))
253 s->method->ssl_clear(s);
257 /** Used to change an SSL_CTXs default SSL method type */
258 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth)
260 STACK_OF(SSL_CIPHER) *sk;
264 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
265 &(ctx->cipher_list_by_id),
266 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
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;
326 s->verify_depth=ctx->verify_depth;
328 s->sid_ctx_length=ctx->sid_ctx_length;
329 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
330 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
331 s->verify_callback=ctx->default_verify_callback;
332 s->generate_session_id=ctx->generate_session_id;
334 s->param = X509_VERIFY_PARAM_new();
337 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
339 s->purpose = ctx->purpose;
340 s->trust = ctx->trust;
342 s->quiet_shutdown=ctx->quiet_shutdown;
343 s->max_send_fragment = ctx->max_send_fragment;
345 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
347 #ifndef OPENSSL_NO_TLSEXT
348 s->tlsext_debug_cb = 0;
349 s->tlsext_debug_arg = NULL;
350 s->tlsext_ticket_expected = 0;
351 s->tlsext_status_type = -1;
352 s->tlsext_status_expected = 0;
353 s->tlsext_ocsp_ids = NULL;
354 s->tlsext_ocsp_exts = NULL;
355 s->tlsext_ocsp_resp = NULL;
356 s->tlsext_ocsp_resplen = -1;
357 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
359 #ifndef OPENSSL_NO_EC
360 if (ctx->tlsext_ecpointformatlist)
362 s->tlsext_ecpointformatlist =
363 BUF_memdup(ctx->tlsext_ecpointformatlist,
364 ctx->tlsext_ecpointformatlist_length);
365 if (!s->tlsext_ecpointformatlist)
367 s->tlsext_ecpointformatlist_length =
368 ctx->tlsext_ecpointformatlist_length;
370 if (ctx->tlsext_ellipticcurvelist)
372 s->tlsext_ellipticcurvelist =
373 BUF_memdup(ctx->tlsext_ellipticcurvelist,
374 ctx->tlsext_ellipticcurvelist_length);
375 if (!s->tlsext_ellipticcurvelist)
377 s->tlsext_ellipticcurvelist_length =
378 ctx->tlsext_ellipticcurvelist_length;
381 # ifndef OPENSSL_NO_NEXTPROTONEG
382 s->next_proto_negotiated = NULL;
386 s->verify_result=X509_V_OK;
388 s->method=ctx->method;
390 if (!s->method->ssl_new(s))
394 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
398 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
400 #ifndef OPENSSL_NO_PSK
401 s->psk_client_callback=ctx->psk_client_callback;
402 s->psk_server_callback=ctx->psk_server_callback;
410 ssl_cert_free(s->cert);
412 SSL_CTX_free(s->ctx); /* decrement reference count */
415 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
419 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
420 unsigned int sid_ctx_len)
422 if(sid_ctx_len > sizeof ctx->sid_ctx)
424 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
427 ctx->sid_ctx_length=sid_ctx_len;
428 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
433 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
434 unsigned int sid_ctx_len)
436 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
438 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
441 ssl->sid_ctx_length=sid_ctx_len;
442 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
447 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
449 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
450 ctx->generate_session_id = cb;
451 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
455 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
457 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
458 ssl->generate_session_id = cb;
459 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
463 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
466 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
467 * we can "construct" a session to give us the desired check - ie. to
468 * find if there's a session in the hash table that would conflict with
469 * any new session built out of this id/id_len and the ssl_version in
470 * use by this SSL. */
473 if(id_len > sizeof r.session_id)
476 r.ssl_version = ssl->version;
477 r.session_id_length = id_len;
478 memcpy(r.session_id, id, id_len);
479 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
480 * callback is calling us to check the uniqueness of a shorter ID, it
481 * must be compared as a padded-out ID because that is what it will be
482 * converted to when the callback has finished choosing it. */
483 if((r.ssl_version == SSL2_VERSION) &&
484 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
486 memset(r.session_id + id_len, 0,
487 SSL2_SSL_SESSION_ID_LENGTH - id_len);
488 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
491 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
492 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
493 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
497 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
499 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
502 int SSL_set_purpose(SSL *s, int purpose)
504 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
507 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
509 return X509_VERIFY_PARAM_set_trust(s->param, trust);
512 int SSL_set_trust(SSL *s, int trust)
514 return X509_VERIFY_PARAM_set_trust(s->param, trust);
517 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
519 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
522 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
524 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
527 void SSL_free(SSL *s)
534 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
542 fprintf(stderr,"SSL_free, bad reference count\n");
548 X509_VERIFY_PARAM_free(s->param);
550 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
554 /* If the buffering BIO is in place, pop it off */
555 if (s->bbio == s->wbio)
557 s->wbio=BIO_pop(s->wbio);
563 BIO_free_all(s->rbio);
564 if ((s->wbio != NULL) && (s->wbio != s->rbio))
565 BIO_free_all(s->wbio);
567 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
569 /* add extra stuff */
570 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
571 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
573 /* Make the next call work :-) */
574 if (s->session != NULL)
576 ssl_clear_bad_session(s);
577 SSL_SESSION_free(s->session);
580 ssl_clear_cipher_ctx(s);
581 ssl_clear_hash_ctx(&s->read_hash);
582 ssl_clear_hash_ctx(&s->write_hash);
584 if (s->cert != NULL) ssl_cert_free(s->cert);
585 /* Free up if allocated */
587 #ifndef OPENSSL_NO_TLSEXT
588 if (s->tlsext_hostname)
589 OPENSSL_free(s->tlsext_hostname);
590 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
591 #ifndef OPENSSL_NO_EC
592 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
593 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
594 #endif /* OPENSSL_NO_EC */
595 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input);
596 if (s->tlsext_ocsp_exts)
597 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
598 X509_EXTENSION_free);
599 if (s->tlsext_ocsp_ids)
600 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
601 if (s->tlsext_ocsp_resp)
602 OPENSSL_free(s->tlsext_ocsp_resp);
605 if (s->client_CA != NULL)
606 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
608 if (s->method != NULL) s->method->ssl_free(s);
610 if (s->ctx) SSL_CTX_free(s->ctx);
612 #ifndef OPENSSL_NO_KRB5
613 if (s->kssl_ctx != NULL)
614 kssl_ctx_free(s->kssl_ctx);
615 #endif /* OPENSSL_NO_KRB5 */
617 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
618 if (s->next_proto_negotiated)
619 OPENSSL_free(s->next_proto_negotiated);
622 if (s->srtp_profiles)
623 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
628 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
630 /* If the output buffering BIO is still in place, remove it
634 if (s->wbio == s->bbio)
636 s->wbio=s->wbio->next_bio;
637 s->bbio->next_bio=NULL;
640 if ((s->rbio != NULL) && (s->rbio != rbio))
641 BIO_free_all(s->rbio);
642 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
643 BIO_free_all(s->wbio);
648 BIO *SSL_get_rbio(const SSL *s)
651 BIO *SSL_get_wbio(const SSL *s)
654 int SSL_get_fd(const SSL *s)
656 return(SSL_get_rfd(s));
659 int SSL_get_rfd(const SSL *s)
665 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
671 int SSL_get_wfd(const SSL *s)
677 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
683 #ifndef OPENSSL_NO_SOCK
684 int SSL_set_fd(SSL *s,int fd)
689 bio=BIO_new(BIO_s_socket());
693 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
696 BIO_set_fd(bio,fd,BIO_NOCLOSE);
697 SSL_set_bio(s,bio,bio);
703 int SSL_set_wfd(SSL *s,int fd)
708 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
709 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
711 bio=BIO_new(BIO_s_socket());
714 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
715 BIO_set_fd(bio,fd,BIO_NOCLOSE);
716 SSL_set_bio(s,SSL_get_rbio(s),bio);
719 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
725 int SSL_set_rfd(SSL *s,int fd)
730 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
731 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
733 bio=BIO_new(BIO_s_socket());
737 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
740 BIO_set_fd(bio,fd,BIO_NOCLOSE);
741 SSL_set_bio(s,bio,SSL_get_wbio(s));
744 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
752 /* return length of latest Finished message we sent, copy to 'buf' */
753 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
759 ret = s->s3->tmp.finish_md_len;
762 memcpy(buf, s->s3->tmp.finish_md, count);
767 /* return length of latest Finished message we expected, copy to 'buf' */
768 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
774 ret = s->s3->tmp.peer_finish_md_len;
777 memcpy(buf, s->s3->tmp.peer_finish_md, count);
783 int SSL_get_verify_mode(const SSL *s)
785 return(s->verify_mode);
788 int SSL_get_verify_depth(const SSL *s)
790 return X509_VERIFY_PARAM_get_depth(s->param);
793 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
795 return(s->verify_callback);
798 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
800 return(ctx->verify_mode);
803 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
805 return X509_VERIFY_PARAM_get_depth(ctx->param);
808 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
810 return(ctx->default_verify_callback);
813 void SSL_set_verify(SSL *s,int mode,
814 int (*callback)(int ok,X509_STORE_CTX *ctx))
817 if (callback != NULL)
818 s->verify_callback=callback;
821 void SSL_set_verify_depth(SSL *s,int depth)
823 X509_VERIFY_PARAM_set_depth(s->param, depth);
826 void SSL_set_read_ahead(SSL *s,int yes)
831 int SSL_get_read_ahead(const SSL *s)
833 return(s->read_ahead);
836 int SSL_pending(const SSL *s)
838 /* SSL_pending cannot work properly if read-ahead is enabled
839 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
840 * and it is impossible to fix since SSL_pending cannot report
841 * errors that may be observed while scanning the new data.
842 * (Note that SSL_pending() is often used as a boolean value,
843 * so we'd better not return -1.)
845 return(s->method->ssl_pending(s));
848 X509 *SSL_get_peer_certificate(const SSL *s)
852 if ((s == NULL) || (s->session == NULL))
857 if (r == NULL) return(r);
859 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
864 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
868 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
871 r=s->session->sess_cert->cert_chain;
873 /* If we are a client, cert_chain includes the peer's own
874 * certificate; if we are a server, it does not. */
879 /* Now in theory, since the calling process own 't' it should be safe to
880 * modify. We need to be able to read f without being hassled */
881 void SSL_copy_session_id(SSL *t,const SSL *f)
885 /* Do we need to to SSL locking? */
886 SSL_set_session(t,SSL_get_session(f));
888 /* what if we are setup as SSLv2 but want to talk SSLv3 or
890 if (t->method != f->method)
892 t->method->ssl_free(t); /* cleanup current */
893 t->method=f->method; /* change method */
894 t->method->ssl_new(t); /* setup new */
900 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
905 if (tmp != NULL) ssl_cert_free(tmp);
906 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
909 /* Fix this so it checks all the valid key/cert options */
910 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
912 if ( (ctx == NULL) ||
913 (ctx->cert == NULL) ||
914 (ctx->cert->key->x509 == NULL))
916 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
919 if (ctx->cert->key->privatekey == NULL)
921 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
924 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
927 /* Fix this function so that it takes an optional type parameter */
928 int SSL_check_private_key(const SSL *ssl)
932 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
935 if (ssl->cert == NULL)
937 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
940 if (ssl->cert->key->x509 == NULL)
942 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
945 if (ssl->cert->key->privatekey == NULL)
947 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
950 return(X509_check_private_key(ssl->cert->key->x509,
951 ssl->cert->key->privatekey));
954 int SSL_accept(SSL *s)
956 if (s->handshake_func == 0)
957 /* Not properly initialized yet */
958 SSL_set_accept_state(s);
960 return(s->method->ssl_accept(s));
963 int SSL_connect(SSL *s)
965 if (s->handshake_func == 0)
966 /* Not properly initialized yet */
967 SSL_set_connect_state(s);
969 return(s->method->ssl_connect(s));
972 long SSL_get_default_timeout(const SSL *s)
974 return(s->method->get_timeout());
977 int SSL_read(SSL *s,void *buf,int num)
979 if (s->handshake_func == 0)
981 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
985 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
987 s->rwstate=SSL_NOTHING;
990 return(s->method->ssl_read(s,buf,num));
993 int SSL_peek(SSL *s,void *buf,int num)
995 if (s->handshake_func == 0)
997 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
1001 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
1005 return(s->method->ssl_peek(s,buf,num));
1008 int SSL_write(SSL *s,const void *buf,int num)
1010 if (s->handshake_func == 0)
1012 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
1016 if (s->shutdown & SSL_SENT_SHUTDOWN)
1018 s->rwstate=SSL_NOTHING;
1019 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
1022 return(s->method->ssl_write(s,buf,num));
1025 int SSL_shutdown(SSL *s)
1027 /* Note that this function behaves differently from what one might
1028 * expect. Return values are 0 for no success (yet),
1029 * 1 for success; but calling it once is usually not enough,
1030 * even if blocking I/O is used (see ssl3_shutdown).
1033 if (s->handshake_func == 0)
1035 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1039 if ((s != NULL) && !SSL_in_init(s))
1040 return(s->method->ssl_shutdown(s));
1045 int SSL_renegotiate(SSL *s)
1047 if (s->renegotiate == 0)
1052 return(s->method->ssl_renegotiate(s));
1055 int SSL_renegotiate_abbreviated(SSL *s)
1057 if (s->renegotiate == 0)
1062 return(s->method->ssl_renegotiate(s));
1065 int SSL_renegotiate_pending(SSL *s)
1067 /* becomes true when negotiation is requested;
1068 * false again once a handshake has finished */
1069 return (s->renegotiate != 0);
1072 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1078 case SSL_CTRL_GET_READ_AHEAD:
1079 return(s->read_ahead);
1080 case SSL_CTRL_SET_READ_AHEAD:
1085 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1086 s->msg_callback_arg = parg;
1089 case SSL_CTRL_OPTIONS:
1090 return(s->options|=larg);
1091 case SSL_CTRL_CLEAR_OPTIONS:
1092 return(s->options&=~larg);
1094 return(s->mode|=larg);
1095 case SSL_CTRL_CLEAR_MODE:
1096 return(s->mode &=~larg);
1097 case SSL_CTRL_GET_MAX_CERT_LIST:
1098 return(s->max_cert_list);
1099 case SSL_CTRL_SET_MAX_CERT_LIST:
1101 s->max_cert_list=larg;
1103 case SSL_CTRL_SET_MTU:
1104 #ifndef OPENSSL_NO_DTLS1
1105 if (larg < (long)dtls1_min_mtu())
1109 if (SSL_version(s) == DTLS1_VERSION ||
1110 SSL_version(s) == DTLS1_BAD_VER)
1116 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1117 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1119 s->max_send_fragment = larg;
1121 case SSL_CTRL_GET_RI_SUPPORT:
1123 return s->s3->send_connection_binding;
1126 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1130 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1134 case SSL_CTRL_SET_MSG_CALLBACK:
1135 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1139 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1143 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1145 return ctx->sessions;
1148 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1154 case SSL_CTRL_GET_READ_AHEAD:
1155 return(ctx->read_ahead);
1156 case SSL_CTRL_SET_READ_AHEAD:
1158 ctx->read_ahead=larg;
1161 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1162 ctx->msg_callback_arg = parg;
1165 case SSL_CTRL_GET_MAX_CERT_LIST:
1166 return(ctx->max_cert_list);
1167 case SSL_CTRL_SET_MAX_CERT_LIST:
1168 l=ctx->max_cert_list;
1169 ctx->max_cert_list=larg;
1172 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1173 l=ctx->session_cache_size;
1174 ctx->session_cache_size=larg;
1176 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1177 return(ctx->session_cache_size);
1178 case SSL_CTRL_SET_SESS_CACHE_MODE:
1179 l=ctx->session_cache_mode;
1180 ctx->session_cache_mode=larg;
1182 case SSL_CTRL_GET_SESS_CACHE_MODE:
1183 return(ctx->session_cache_mode);
1185 case SSL_CTRL_SESS_NUMBER:
1186 return(lh_SSL_SESSION_num_items(ctx->sessions));
1187 case SSL_CTRL_SESS_CONNECT:
1188 return(ctx->stats.sess_connect);
1189 case SSL_CTRL_SESS_CONNECT_GOOD:
1190 return(ctx->stats.sess_connect_good);
1191 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1192 return(ctx->stats.sess_connect_renegotiate);
1193 case SSL_CTRL_SESS_ACCEPT:
1194 return(ctx->stats.sess_accept);
1195 case SSL_CTRL_SESS_ACCEPT_GOOD:
1196 return(ctx->stats.sess_accept_good);
1197 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1198 return(ctx->stats.sess_accept_renegotiate);
1199 case SSL_CTRL_SESS_HIT:
1200 return(ctx->stats.sess_hit);
1201 case SSL_CTRL_SESS_CB_HIT:
1202 return(ctx->stats.sess_cb_hit);
1203 case SSL_CTRL_SESS_MISSES:
1204 return(ctx->stats.sess_miss);
1205 case SSL_CTRL_SESS_TIMEOUTS:
1206 return(ctx->stats.sess_timeout);
1207 case SSL_CTRL_SESS_CACHE_FULL:
1208 return(ctx->stats.sess_cache_full);
1209 case SSL_CTRL_OPTIONS:
1210 return(ctx->options|=larg);
1211 case SSL_CTRL_CLEAR_OPTIONS:
1212 return(ctx->options&=~larg);
1214 return(ctx->mode|=larg);
1215 case SSL_CTRL_CLEAR_MODE:
1216 return(ctx->mode&=~larg);
1217 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1218 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1220 ctx->max_send_fragment = larg;
1223 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1227 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1231 case SSL_CTRL_SET_MSG_CALLBACK:
1232 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1236 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1240 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1248 return((l > 0)?1:-1);
1251 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1252 const SSL_CIPHER * const *bp)
1256 l=(*ap)->id-(*bp)->id;
1260 return((l > 0)?1:-1);
1263 /** return a STACK of the ciphers available for the SSL and in order of
1265 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1269 if (s->cipher_list != NULL)
1271 return(s->cipher_list);
1273 else if ((s->ctx != NULL) &&
1274 (s->ctx->cipher_list != NULL))
1276 return(s->ctx->cipher_list);
1282 /** return a STACK of the ciphers available for the SSL and in order of
1284 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1288 if (s->cipher_list_by_id != NULL)
1290 return(s->cipher_list_by_id);
1292 else if ((s->ctx != NULL) &&
1293 (s->ctx->cipher_list_by_id != NULL))
1295 return(s->ctx->cipher_list_by_id);
1301 /** The old interface to get the same thing as SSL_get_ciphers() */
1302 const char *SSL_get_cipher_list(const SSL *s,int n)
1305 STACK_OF(SSL_CIPHER) *sk;
1307 if (s == NULL) return(NULL);
1308 sk=SSL_get_ciphers(s);
1309 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1311 c=sk_SSL_CIPHER_value(sk,n);
1312 if (c == NULL) return(NULL);
1316 /** specify the ciphers to be used by default by the SSL_CTX */
1317 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1319 STACK_OF(SSL_CIPHER) *sk;
1321 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1322 &ctx->cipher_list_by_id,str);
1323 /* ssl_create_cipher_list may return an empty stack if it
1324 * was unable to find a cipher matching the given rule string
1325 * (for example if the rule string specifies a cipher which
1326 * has been disabled). This is not an error as far as
1327 * ssl_create_cipher_list is concerned, and hence
1328 * ctx->cipher_list and ctx->cipher_list_by_id has been
1332 else if (sk_SSL_CIPHER_num(sk) == 0)
1334 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1340 /** specify the ciphers to be used by the SSL */
1341 int SSL_set_cipher_list(SSL *s,const char *str)
1343 STACK_OF(SSL_CIPHER) *sk;
1345 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1346 &s->cipher_list_by_id,str);
1347 /* see comment in SSL_CTX_set_cipher_list */
1350 else if (sk_SSL_CIPHER_num(sk) == 0)
1352 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1358 /* works well for SSLv2, not so good for SSLv3 */
1359 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1362 STACK_OF(SSL_CIPHER) *sk;
1366 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1371 sk=s->session->ciphers;
1372 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1376 c=sk_SSL_CIPHER_value(sk,i);
1394 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1395 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1400 #ifndef OPENSSL_NO_KRB5
1401 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1402 #endif /* OPENSSL_NO_KRB5 */
1404 if (sk == NULL) return(0);
1407 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1409 c=sk_SSL_CIPHER_value(sk,i);
1410 /* Skip TLS v1.2 only ciphersuites if lower than v1.2 */
1411 if ((c->algorithm_ssl & SSL_TLSV1_2) &&
1412 (TLS1_get_client_version(s) < TLS1_2_VERSION))
1414 #ifndef OPENSSL_NO_KRB5
1415 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) &&
1418 #endif /* OPENSSL_NO_KRB5 */
1419 #ifndef OPENSSL_NO_PSK
1420 /* with PSK there must be client callback set */
1421 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) &&
1422 s->psk_client_callback == NULL)
1424 #endif /* OPENSSL_NO_PSK */
1425 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1428 /* If p == q, no ciphers and caller indicates an error. Otherwise
1429 * add SCSV if not renegotiating.
1431 if (p != q && !s->renegotiate)
1433 static SSL_CIPHER scsv =
1435 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1437 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1439 #ifdef OPENSSL_RI_DEBUG
1440 fprintf(stderr, "SCSV sent by client\n");
1447 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1448 STACK_OF(SSL_CIPHER) **skp)
1450 const SSL_CIPHER *c;
1451 STACK_OF(SSL_CIPHER) *sk;
1454 s->s3->send_connection_binding = 0;
1456 n=ssl_put_cipher_by_char(s,NULL,NULL);
1459 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1462 if ((skp == NULL) || (*skp == NULL))
1463 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1467 sk_SSL_CIPHER_zero(sk);
1470 for (i=0; i<num; i+=n)
1472 /* Check for SCSV */
1473 if (s->s3 && (n != 3 || !p[0]) &&
1474 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1475 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1477 /* SCSV fatal if renegotiating */
1480 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1481 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1484 s->s3->send_connection_binding = 1;
1486 #ifdef OPENSSL_RI_DEBUG
1487 fprintf(stderr, "SCSV received by server\n");
1492 c=ssl_get_cipher_by_char(s,p);
1496 if (!sk_SSL_CIPHER_push(sk,c))
1498 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1508 if ((skp == NULL) || (*skp == NULL))
1509 sk_SSL_CIPHER_free(sk);
1514 #ifndef OPENSSL_NO_TLSEXT
1515 /** return a servername extension value if provided in Client Hello, or NULL.
1516 * So far, only host_name types are defined (RFC 3546).
1519 const char *SSL_get_servername(const SSL *s, const int type)
1521 if (type != TLSEXT_NAMETYPE_host_name)
1524 return s->session && !s->tlsext_hostname ?
1525 s->session->tlsext_hostname :
1529 int SSL_get_servername_type(const SSL *s)
1531 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1532 return TLSEXT_NAMETYPE_host_name;
1536 # ifndef OPENSSL_NO_NEXTPROTONEG
1537 /* SSL_select_next_proto implements the standard protocol selection. It is
1538 * expected that this function is called from the callback set by
1539 * SSL_CTX_set_next_proto_select_cb.
1541 * The protocol data is assumed to be a vector of 8-bit, length prefixed byte
1542 * strings. The length byte itself is not included in the length. A byte
1543 * string of length 0 is invalid. No byte string may be truncated.
1545 * The current, but experimental algorithm for selecting the protocol is:
1547 * 1) If the server doesn't support NPN then this is indicated to the
1548 * callback. In this case, the client application has to abort the connection
1549 * or have a default application level protocol.
1551 * 2) If the server supports NPN, but advertises an empty list then the
1552 * client selects the first protcol in its list, but indicates via the
1553 * API that this fallback case was enacted.
1555 * 3) Otherwise, the client finds the first protocol in the server's list
1556 * that it supports and selects this protocol. This is because it's
1557 * assumed that the server has better information about which protocol
1558 * a client should use.
1560 * 4) If the client doesn't support any of the server's advertised
1561 * protocols, then this is treated the same as case 2.
1564 * OPENSSL_NPN_NEGOTIATED if a common protocol was found, or
1565 * OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
1567 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)
1570 const unsigned char *result;
1571 int status = OPENSSL_NPN_UNSUPPORTED;
1573 /* For each protocol in server preference order, see if we support it. */
1574 for (i = 0; i < server_len; )
1576 for (j = 0; j < client_len; )
1578 if (server[i] == client[j] &&
1579 memcmp(&server[i+1], &client[j+1], server[i]) == 0)
1581 /* We found a match */
1582 result = &server[i];
1583 status = OPENSSL_NPN_NEGOTIATED;
1593 /* There's no overlap between our protocols and the server's list. */
1595 status = OPENSSL_NPN_NO_OVERLAP;
1598 *out = (unsigned char *) result + 1;
1599 *outlen = result[0];
1603 /* SSL_get0_next_proto_negotiated sets *data and *len to point to the client's
1604 * requested protocol for this connection and returns 0. If the client didn't
1605 * request any protocol, then *data is set to NULL.
1607 * Note that the client can request any protocol it chooses. The value returned
1608 * from this function need not be a member of the list of supported protocols
1609 * provided by the callback.
1611 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data, unsigned *len)
1613 *data = s->next_proto_negotiated;
1617 *len = s->next_proto_negotiated_len;
1621 /* SSL_CTX_set_next_protos_advertised_cb sets a callback that is called when a
1622 * TLS server needs a list of supported protocols for Next Protocol
1623 * Negotiation. The returned list must be in wire format. The list is returned
1624 * by setting |out| to point to it and |outlen| to its length. This memory will
1625 * not be modified, but one should assume that the SSL* keeps a reference to
1628 * The callback should return SSL_TLSEXT_ERR_OK if it wishes to advertise. Otherwise, no
1629 * such extension will be included in the ServerHello. */
1630 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)
1632 ctx->next_protos_advertised_cb = cb;
1633 ctx->next_protos_advertised_cb_arg = arg;
1636 /* SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
1637 * client needs to select a protocol from the server's provided list. |out|
1638 * must be set to point to the selected protocol (which may be within |in|).
1639 * The length of the protocol name must be written into |outlen|. The server's
1640 * advertised protocols are provided in |in| and |inlen|. The callback can
1641 * assume that |in| is syntactically valid.
1643 * The client must select a protocol. It is fatal to the connection if this
1644 * callback returns a value other than SSL_TLSEXT_ERR_OK.
1646 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)
1648 ctx->next_proto_select_cb = cb;
1649 ctx->next_proto_select_cb_arg = arg;
1654 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1655 const char *label, size_t llen, const unsigned char *p, size_t plen,
1658 if (s->version < TLS1_VERSION)
1661 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
1666 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1671 ((unsigned int) a->session_id[0] )|
1672 ((unsigned int) a->session_id[1]<< 8L)|
1673 ((unsigned long)a->session_id[2]<<16L)|
1674 ((unsigned long)a->session_id[3]<<24L);
1678 /* NB: If this function (or indeed the hash function which uses a sort of
1679 * coarser function than this one) is changed, ensure
1680 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1681 * able to construct an SSL_SESSION that will collide with any existing session
1682 * with a matching session ID. */
1683 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1685 if (a->ssl_version != b->ssl_version)
1687 if (a->session_id_length != b->session_id_length)
1689 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1692 /* These wrapper functions should remain rather than redeclaring
1693 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1694 * variable. The reason is that the functions aren't static, they're exposed via
1696 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1697 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1699 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1705 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1710 if (FIPS_mode() && (meth->version < TLS1_VERSION))
1712 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_ONLY_TLS_ALLOWED_IN_FIPS_MODE);
1717 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1719 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1722 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1726 memset(ret,0,sizeof(SSL_CTX));
1730 ret->cert_store=NULL;
1731 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1732 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1733 ret->session_cache_head=NULL;
1734 ret->session_cache_tail=NULL;
1736 /* We take the system default */
1737 ret->session_timeout=meth->get_timeout();
1739 ret->new_session_cb=0;
1740 ret->remove_session_cb=0;
1741 ret->get_session_cb=0;
1742 ret->generate_session_id=0;
1744 memset((char *)&ret->stats,0,sizeof(ret->stats));
1747 ret->quiet_shutdown=0;
1749 /* ret->cipher=NULL;*/
1750 /* ret->s2->challenge=NULL;
1751 ret->master_key=NULL;
1753 ret->s2->conn_id=NULL; */
1755 ret->info_callback=NULL;
1757 ret->app_verify_callback=0;
1758 ret->app_verify_arg=NULL;
1760 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1762 ret->msg_callback=0;
1763 ret->msg_callback_arg=NULL;
1764 ret->verify_mode=SSL_VERIFY_NONE;
1766 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1768 ret->sid_ctx_length=0;
1769 ret->default_verify_callback=NULL;
1770 if ((ret->cert=ssl_cert_new()) == NULL)
1773 ret->default_passwd_callback=0;
1774 ret->default_passwd_callback_userdata=NULL;
1775 ret->client_cert_cb=0;
1776 ret->app_gen_cookie_cb=0;
1777 ret->app_verify_cookie_cb=0;
1779 ret->sessions=lh_SSL_SESSION_new();
1780 if (ret->sessions == NULL) goto err;
1781 ret->cert_store=X509_STORE_new();
1782 if (ret->cert_store == NULL) goto err;
1784 ssl_create_cipher_list(ret->method,
1785 &ret->cipher_list,&ret->cipher_list_by_id,
1786 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1787 if (ret->cipher_list == NULL
1788 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1790 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1794 ret->param = X509_VERIFY_PARAM_new();
1798 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1800 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1803 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1805 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1808 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1810 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1814 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1817 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1819 ret->extra_certs=NULL;
1820 ret->comp_methods=SSL_COMP_get_compression_methods();
1822 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1824 #ifndef OPENSSL_NO_TLSEXT
1825 ret->tlsext_servername_callback = 0;
1826 ret->tlsext_servername_arg = NULL;
1827 /* Setup RFC4507 ticket keys */
1828 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1829 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1830 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1831 ret->options |= SSL_OP_NO_TICKET;
1833 ret->tlsext_status_cb = 0;
1834 ret->tlsext_status_arg = NULL;
1836 # ifndef OPENSSL_NO_NEXTPROTONEG
1837 ret->next_protos_advertised_cb = 0;
1838 ret->next_proto_select_cb = 0;
1841 #ifndef OPENSSL_NO_PSK
1842 ret->psk_identity_hint=NULL;
1843 ret->psk_client_callback=NULL;
1844 ret->psk_server_callback=NULL;
1846 #ifndef OPENSSL_NO_SRP
1847 SSL_CTX_SRP_CTX_init(ret);
1849 #ifndef OPENSSL_NO_BUF_FREELISTS
1850 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1851 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1852 if (!ret->rbuf_freelist)
1854 ret->rbuf_freelist->chunklen = 0;
1855 ret->rbuf_freelist->len = 0;
1856 ret->rbuf_freelist->head = NULL;
1857 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1858 if (!ret->wbuf_freelist)
1860 OPENSSL_free(ret->rbuf_freelist);
1863 ret->wbuf_freelist->chunklen = 0;
1864 ret->wbuf_freelist->len = 0;
1865 ret->wbuf_freelist->head = NULL;
1867 #ifndef OPENSSL_NO_ENGINE
1868 ret->client_cert_engine = NULL;
1869 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1870 #define eng_strx(x) #x
1871 #define eng_str(x) eng_strx(x)
1872 /* Use specific client engine automatically... ignore errors */
1875 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1879 ENGINE_load_builtin_engines();
1880 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1882 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1887 /* Default is to connect to non-RI servers. When RI is more widely
1888 * deployed might change this.
1890 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1894 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1896 if (ret != NULL) SSL_CTX_free(ret);
1901 static void SSL_COMP_free(SSL_COMP *comp)
1902 { OPENSSL_free(comp); }
1905 #ifndef OPENSSL_NO_BUF_FREELISTS
1907 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1909 SSL3_BUF_FREELIST_ENTRY *ent, *next;
1910 for (ent = list->head; ent; ent = next)
1919 void SSL_CTX_free(SSL_CTX *a)
1923 if (a == NULL) return;
1925 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1927 REF_PRINT("SSL_CTX",a);
1933 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1939 X509_VERIFY_PARAM_free(a->param);
1942 * Free internal session cache. However: the remove_cb() may reference
1943 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1944 * after the sessions were flushed.
1945 * As the ex_data handling routines might also touch the session cache,
1946 * the most secure solution seems to be: empty (flush) the cache, then
1947 * free ex_data, then finally free the cache.
1948 * (See ticket [openssl.org #212].)
1950 if (a->sessions != NULL)
1951 SSL_CTX_flush_sessions(a,0);
1953 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1955 if (a->sessions != NULL)
1956 lh_SSL_SESSION_free(a->sessions);
1958 if (a->cert_store != NULL)
1959 X509_STORE_free(a->cert_store);
1960 if (a->cipher_list != NULL)
1961 sk_SSL_CIPHER_free(a->cipher_list);
1962 if (a->cipher_list_by_id != NULL)
1963 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1964 if (a->cert != NULL)
1965 ssl_cert_free(a->cert);
1966 if (a->client_CA != NULL)
1967 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1968 if (a->extra_certs != NULL)
1969 sk_X509_pop_free(a->extra_certs,X509_free);
1970 #if 0 /* This should never be done, since it removes a global database */
1971 if (a->comp_methods != NULL)
1972 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1974 a->comp_methods = NULL;
1977 if (a->srtp_profiles)
1978 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
1980 #ifndef OPENSSL_NO_PSK
1981 if (a->psk_identity_hint)
1982 OPENSSL_free(a->psk_identity_hint);
1984 #ifndef OPENSSL_NO_SRP
1985 SSL_CTX_SRP_CTX_free(a);
1987 #ifndef OPENSSL_NO_ENGINE
1988 if (a->client_cert_engine)
1989 ENGINE_finish(a->client_cert_engine);
1992 #ifndef OPENSSL_NO_BUF_FREELISTS
1993 if (a->wbuf_freelist)
1994 ssl_buf_freelist_free(a->wbuf_freelist);
1995 if (a->rbuf_freelist)
1996 ssl_buf_freelist_free(a->rbuf_freelist);
1998 #ifndef OPENSSL_NO_TLSEXT
1999 # ifndef OPENSSL_NO_EC
2000 if (a->tlsext_ecpointformatlist)
2001 OPENSSL_free(a->tlsext_ecpointformatlist);
2002 if (a->tlsext_ellipticcurvelist)
2003 OPENSSL_free(a->tlsext_ellipticcurvelist);
2004 # endif /* OPENSSL_NO_EC */
2010 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
2012 ctx->default_passwd_callback=cb;
2015 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
2017 ctx->default_passwd_callback_userdata=u;
2020 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
2022 ctx->app_verify_callback=cb;
2023 ctx->app_verify_arg=arg;
2026 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
2028 ctx->verify_mode=mode;
2029 ctx->default_verify_callback=cb;
2032 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
2034 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
2037 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
2040 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
2041 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
2042 int rsa_tmp_export,dh_tmp_export,kl;
2043 unsigned long mask_k,mask_a,emask_k,emask_a;
2044 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
2045 #ifndef OPENSSL_NO_ECDH
2049 EVP_PKEY *ecc_pkey = NULL;
2050 int signature_nid = 0, pk_nid = 0, md_nid = 0;
2052 if (c == NULL) return;
2054 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
2056 #ifndef OPENSSL_NO_RSA
2057 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
2058 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
2059 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
2061 rsa_tmp=rsa_tmp_export=0;
2063 #ifndef OPENSSL_NO_DH
2064 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
2065 dh_tmp_export=(c->dh_tmp_cb != NULL ||
2066 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
2068 dh_tmp=dh_tmp_export=0;
2071 #ifndef OPENSSL_NO_ECDH
2072 have_ecdh_tmp=(c->ecdh_tmp || c->ecdh_tmp_cb || c->ecdh_tmp_auto);
2074 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
2075 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
2076 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2077 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
2078 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
2079 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
2080 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
2081 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
2082 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
2083 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2084 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
2085 /* FIX THIS EAY EAY EAY */
2086 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
2087 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
2088 cpk= &(c->pkeys[SSL_PKEY_ECC]);
2089 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
2098 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
2099 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
2100 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
2103 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
2104 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2105 mask_k |= SSL_kGOST;
2106 mask_a |= SSL_aGOST01;
2108 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
2109 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
2110 mask_k |= SSL_kGOST;
2111 mask_a |= SSL_aGOST94;
2114 if (rsa_enc || (rsa_tmp && rsa_sign))
2116 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
2120 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
2121 if ( (dh_tmp || dh_rsa || dh_dsa) &&
2122 (rsa_enc || rsa_sign || dsa_sign))
2124 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
2125 (rsa_enc || rsa_sign || dsa_sign))
2135 if (dh_rsa) mask_k|=SSL_kDHr;
2136 if (dh_rsa_export) emask_k|=SSL_kDHr;
2138 if (dh_dsa) mask_k|=SSL_kDHd;
2139 if (dh_dsa_export) emask_k|=SSL_kDHd;
2141 if (emask_k & (SSL_kDHr|SSL_kDHd))
2144 if (rsa_enc || rsa_sign)
2159 #ifndef OPENSSL_NO_KRB5
2166 /* An ECC certificate may be usable for ECDH and/or
2167 * ECDSA cipher suites depending on the key usage extension.
2171 /* This call populates extension flags (ex_flags) */
2172 x = (c->pkeys[SSL_PKEY_ECC]).x509;
2173 X509_check_purpose(x, -1, 0);
2174 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2175 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
2176 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
2177 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
2178 ecc_pkey = X509_get_pubkey(x);
2179 ecc_pkey_size = (ecc_pkey != NULL) ?
2180 EVP_PKEY_bits(ecc_pkey) : 0;
2181 EVP_PKEY_free(ecc_pkey);
2182 if ((x->sig_alg) && (x->sig_alg->algorithm))
2184 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2185 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2187 #ifndef OPENSSL_NO_ECDH
2191 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa)
2195 if (ecc_pkey_size <= 163)
2197 emask_k|=SSL_kECDHr;
2202 if (pk_nid == NID_X9_62_id_ecPublicKey)
2206 if (ecc_pkey_size <= 163)
2208 emask_k|=SSL_kECDHe;
2214 #ifndef OPENSSL_NO_ECDSA
2218 emask_a|=SSL_aECDSA;
2223 #ifndef OPENSSL_NO_ECDH
2227 emask_k|=SSL_kEECDH;
2231 #ifndef OPENSSL_NO_PSK
2234 emask_k |= SSL_kPSK;
2235 emask_a |= SSL_aPSK;
2240 c->export_mask_k=emask_k;
2241 c->export_mask_a=emask_a;
2245 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2246 #define ku_reject(x, usage) \
2247 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2249 #ifndef OPENSSL_NO_EC
2251 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
2253 unsigned long alg_k, alg_a;
2254 EVP_PKEY *pkey = NULL;
2256 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2257 const SSL_CIPHER *cs = s->s3->tmp.new_cipher;
2259 alg_k = cs->algorithm_mkey;
2260 alg_a = cs->algorithm_auth;
2262 if (SSL_C_IS_EXPORT(cs))
2264 /* ECDH key length in export ciphers must be <= 163 bits */
2265 pkey = X509_get_pubkey(x);
2266 if (pkey == NULL) return 0;
2267 keysize = EVP_PKEY_bits(pkey);
2268 EVP_PKEY_free(pkey);
2269 if (keysize > 163) return 0;
2272 /* This call populates the ex_flags field correctly */
2273 X509_check_purpose(x, -1, 0);
2274 if ((x->sig_alg) && (x->sig_alg->algorithm))
2276 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2277 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2279 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2281 /* key usage, if present, must allow key agreement */
2282 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2284 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2287 if ((alg_k & SSL_kECDHe) && TLS1_get_version(s) < TLS1_2_VERSION)
2289 /* signature alg must be ECDSA */
2290 if (pk_nid != NID_X9_62_id_ecPublicKey)
2292 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2296 if ((alg_k & SSL_kECDHr) && TLS1_get_version(s) < TLS1_2_VERSION)
2298 /* signature alg must be RSA */
2300 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa)
2302 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2307 if (alg_a & SSL_aECDSA)
2309 /* key usage, if present, must allow signing */
2310 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2312 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2317 return 1; /* all checks are ok */
2322 /* THIS NEEDS CLEANING UP */
2323 CERT_PKEY *ssl_get_server_send_pkey(SSL *s)
2325 unsigned long alg_k,alg_a;
2330 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2332 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2333 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2335 if (alg_k & (SSL_kECDHr|SSL_kECDHe))
2337 /* we don't need to look at SSL_kEECDH
2338 * since no certificate is needed for
2339 * anon ECDH and for authenticated
2340 * EECDH, the check for the auth
2341 * algorithm will set i correctly
2342 * NOTE: For ECDH-RSA, we need an ECC
2343 * not an RSA cert but for EECDH-RSA
2344 * we need an RSA cert. Placing the
2345 * checks for SSL_kECDH before RSA
2346 * checks ensures the correct cert is chosen.
2350 else if (alg_a & SSL_aECDSA)
2354 else if (alg_k & SSL_kDHr)
2356 else if (alg_k & SSL_kDHd)
2358 else if (alg_a & SSL_aDSS)
2359 i=SSL_PKEY_DSA_SIGN;
2360 else if (alg_a & SSL_aRSA)
2362 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2363 i=SSL_PKEY_RSA_SIGN;
2367 else if (alg_a & SSL_aKRB5)
2369 /* VRS something else here? */
2372 else if (alg_a & SSL_aGOST94)
2374 else if (alg_a & SSL_aGOST01)
2376 else /* if (alg_a & SSL_aNULL) */
2378 SSLerr(SSL_F_SSL_GET_SERVER_SEND_PKEY,ERR_R_INTERNAL_ERROR);
2381 if (c->pkeys[i].x509 == NULL) return(NULL);
2383 return(&c->pkeys[i]);
2386 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher, const EVP_MD **pmd)
2388 unsigned long alg_a;
2392 alg_a = cipher->algorithm_auth;
2395 if ((alg_a & SSL_aDSS) &&
2396 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2397 idx = SSL_PKEY_DSA_SIGN;
2398 else if (alg_a & SSL_aRSA)
2400 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2401 idx = SSL_PKEY_RSA_SIGN;
2402 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2403 idx = SSL_PKEY_RSA_ENC;
2405 else if ((alg_a & SSL_aECDSA) &&
2406 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2410 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2414 *pmd = c->pkeys[idx].digest;
2415 return c->pkeys[idx].privatekey;
2418 void ssl_update_cache(SSL *s,int mode)
2422 /* If the session_id_length is 0, we are not supposed to cache it,
2423 * and it would be rather hard to do anyway :-) */
2424 if (s->session->session_id_length == 0) return;
2426 i=s->session_ctx->session_cache_mode;
2427 if ((i & mode) && (!s->hit)
2428 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2429 || SSL_CTX_add_session(s->session_ctx,s->session))
2430 && (s->session_ctx->new_session_cb != NULL))
2432 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2433 if (!s->session_ctx->new_session_cb(s,s->session))
2434 SSL_SESSION_free(s->session);
2437 /* auto flush every 255 connections */
2438 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2439 ((i & mode) == mode))
2441 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2442 ?s->session_ctx->stats.sess_connect_good
2443 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2445 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2450 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2455 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2460 if (s->method != meth)
2462 if (s->handshake_func != NULL)
2463 conn=(s->handshake_func == s->method->ssl_connect);
2465 if (s->method->version == meth->version)
2469 s->method->ssl_free(s);
2471 ret=s->method->ssl_new(s);
2475 s->handshake_func=meth->ssl_connect;
2477 s->handshake_func=meth->ssl_accept;
2482 int SSL_get_error(const SSL *s,int i)
2488 if (i > 0) return(SSL_ERROR_NONE);
2490 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2491 * etc, where we do encode the error */
2492 if ((l=ERR_peek_error()) != 0)
2494 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2495 return(SSL_ERROR_SYSCALL);
2497 return(SSL_ERROR_SSL);
2500 if ((i < 0) && SSL_want_read(s))
2502 bio=SSL_get_rbio(s);
2503 if (BIO_should_read(bio))
2504 return(SSL_ERROR_WANT_READ);
2505 else if (BIO_should_write(bio))
2506 /* This one doesn't make too much sense ... We never try
2507 * to write to the rbio, and an application program where
2508 * rbio and wbio are separate couldn't even know what it
2510 * However if we ever set s->rwstate incorrectly
2511 * (so that we have SSL_want_read(s) instead of
2512 * SSL_want_write(s)) and rbio and wbio *are* the same,
2513 * this test works around that bug; so it might be safer
2515 return(SSL_ERROR_WANT_WRITE);
2516 else if (BIO_should_io_special(bio))
2518 reason=BIO_get_retry_reason(bio);
2519 if (reason == BIO_RR_CONNECT)
2520 return(SSL_ERROR_WANT_CONNECT);
2521 else if (reason == BIO_RR_ACCEPT)
2522 return(SSL_ERROR_WANT_ACCEPT);
2524 return(SSL_ERROR_SYSCALL); /* unknown */
2528 if ((i < 0) && SSL_want_write(s))
2530 bio=SSL_get_wbio(s);
2531 if (BIO_should_write(bio))
2532 return(SSL_ERROR_WANT_WRITE);
2533 else if (BIO_should_read(bio))
2534 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2535 return(SSL_ERROR_WANT_READ);
2536 else if (BIO_should_io_special(bio))
2538 reason=BIO_get_retry_reason(bio);
2539 if (reason == BIO_RR_CONNECT)
2540 return(SSL_ERROR_WANT_CONNECT);
2541 else if (reason == BIO_RR_ACCEPT)
2542 return(SSL_ERROR_WANT_ACCEPT);
2544 return(SSL_ERROR_SYSCALL);
2547 if ((i < 0) && SSL_want_x509_lookup(s))
2549 return(SSL_ERROR_WANT_X509_LOOKUP);
2554 if (s->version == SSL2_VERSION)
2556 /* assume it is the socket being closed */
2557 return(SSL_ERROR_ZERO_RETURN);
2561 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2562 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2563 return(SSL_ERROR_ZERO_RETURN);
2566 return(SSL_ERROR_SYSCALL);
2569 int SSL_do_handshake(SSL *s)
2573 if (s->handshake_func == NULL)
2575 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2579 s->method->ssl_renegotiate_check(s);
2581 if (SSL_in_init(s) || SSL_in_before(s))
2583 ret=s->handshake_func(s);
2588 /* For the next 2 functions, SSL_clear() sets shutdown and so
2589 * one of these calls will reset it */
2590 void SSL_set_accept_state(SSL *s)
2594 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2595 s->handshake_func=s->method->ssl_accept;
2596 /* clear the current cipher */
2597 ssl_clear_cipher_ctx(s);
2598 ssl_clear_hash_ctx(&s->read_hash);
2599 ssl_clear_hash_ctx(&s->write_hash);
2602 void SSL_set_connect_state(SSL *s)
2606 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2607 s->handshake_func=s->method->ssl_connect;
2608 /* clear the current cipher */
2609 ssl_clear_cipher_ctx(s);
2610 ssl_clear_hash_ctx(&s->read_hash);
2611 ssl_clear_hash_ctx(&s->write_hash);
2614 int ssl_undefined_function(SSL *s)
2616 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2620 int ssl_undefined_void_function(void)
2622 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2626 int ssl_undefined_const_function(const SSL *s)
2628 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2632 SSL_METHOD *ssl_bad_method(int ver)
2634 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2638 const char *SSL_get_version(const SSL *s)
2640 if (s->version == TLS1_2_VERSION)
2642 else if (s->version == TLS1_1_VERSION)
2644 if (s->version == TLS1_VERSION)
2646 else if (s->version == SSL3_VERSION)
2648 else if (s->version == SSL2_VERSION)
2654 SSL *SSL_dup(SSL *s)
2656 STACK_OF(X509_NAME) *sk;
2661 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2664 ret->version = s->version;
2665 ret->type = s->type;
2666 ret->method = s->method;
2668 if (s->session != NULL)
2670 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2671 SSL_copy_session_id(ret,s);
2675 /* No session has been established yet, so we have to expect
2676 * that s->cert or ret->cert will be changed later --
2677 * they should not both point to the same object,
2678 * and thus we can't use SSL_copy_session_id. */
2680 ret->method->ssl_free(ret);
2681 ret->method = s->method;
2682 ret->method->ssl_new(ret);
2684 if (s->cert != NULL)
2686 if (ret->cert != NULL)
2688 ssl_cert_free(ret->cert);
2690 ret->cert = ssl_cert_dup(s->cert);
2691 if (ret->cert == NULL)
2695 SSL_set_session_id_context(ret,
2696 s->sid_ctx, s->sid_ctx_length);
2699 ret->options=s->options;
2701 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2702 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2703 ret->msg_callback = s->msg_callback;
2704 ret->msg_callback_arg = s->msg_callback_arg;
2705 SSL_set_verify(ret,SSL_get_verify_mode(s),
2706 SSL_get_verify_callback(s));
2707 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2708 ret->generate_session_id = s->generate_session_id;
2710 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2712 ret->debug=s->debug;
2714 /* copy app data, a little dangerous perhaps */
2715 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2718 /* setup rbio, and wbio */
2719 if (s->rbio != NULL)
2721 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2724 if (s->wbio != NULL)
2726 if (s->wbio != s->rbio)
2728 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2732 ret->wbio=ret->rbio;
2734 ret->rwstate = s->rwstate;
2735 ret->in_handshake = s->in_handshake;
2736 ret->handshake_func = s->handshake_func;
2737 ret->server = s->server;
2738 ret->renegotiate = s->renegotiate;
2739 ret->new_session = s->new_session;
2740 ret->quiet_shutdown = s->quiet_shutdown;
2741 ret->shutdown=s->shutdown;
2742 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2743 ret->rstate=s->rstate;
2744 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2747 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2749 /* dup the cipher_list and cipher_list_by_id stacks */
2750 if (s->cipher_list != NULL)
2752 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2755 if (s->cipher_list_by_id != NULL)
2756 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2760 /* Dup the client_CA list */
2761 if (s->client_CA != NULL)
2763 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2765 for (i=0; i<sk_X509_NAME_num(sk); i++)
2767 xn=sk_X509_NAME_value(sk,i);
2768 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2779 if (ret != NULL) SSL_free(ret);
2785 void ssl_clear_cipher_ctx(SSL *s)
2787 if (s->enc_read_ctx != NULL)
2789 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2790 OPENSSL_free(s->enc_read_ctx);
2791 s->enc_read_ctx=NULL;
2793 if (s->enc_write_ctx != NULL)
2795 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2796 OPENSSL_free(s->enc_write_ctx);
2797 s->enc_write_ctx=NULL;
2799 #ifndef OPENSSL_NO_COMP
2800 if (s->expand != NULL)
2802 COMP_CTX_free(s->expand);
2805 if (s->compress != NULL)
2807 COMP_CTX_free(s->compress);
2813 /* Fix this function so that it takes an optional type parameter */
2814 X509 *SSL_get_certificate(const SSL *s)
2816 if (s->cert != NULL)
2817 return(s->cert->key->x509);
2822 /* Fix this function so that it takes an optional type parameter */
2823 EVP_PKEY *SSL_get_privatekey(SSL *s)
2825 if (s->cert != NULL)
2826 return(s->cert->key->privatekey);
2831 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2833 if ((s->session != NULL) && (s->session->cipher != NULL))
2834 return(s->session->cipher);
2837 #ifdef OPENSSL_NO_COMP
2838 const void *SSL_get_current_compression(SSL *s)
2842 const void *SSL_get_current_expansion(SSL *s)
2848 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2850 if (s->compress != NULL)
2851 return(s->compress->meth);
2855 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2857 if (s->expand != NULL)
2858 return(s->expand->meth);
2863 int ssl_init_wbio_buffer(SSL *s,int push)
2867 if (s->bbio == NULL)
2869 bbio=BIO_new(BIO_f_buffer());
2870 if (bbio == NULL) return(0);
2876 if (s->bbio == s->wbio)
2877 s->wbio=BIO_pop(s->wbio);
2879 (void)BIO_reset(bbio);
2880 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2881 if (!BIO_set_read_buffer_size(bbio,1))
2883 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2888 if (s->wbio != bbio)
2889 s->wbio=BIO_push(bbio,s->wbio);
2893 if (s->wbio == bbio)
2894 s->wbio=BIO_pop(bbio);
2899 void ssl_free_wbio_buffer(SSL *s)
2901 if (s->bbio == NULL) return;
2903 if (s->bbio == s->wbio)
2905 /* remove buffering */
2906 s->wbio=BIO_pop(s->wbio);
2907 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2908 assert(s->wbio != NULL);
2915 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2917 ctx->quiet_shutdown=mode;
2920 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2922 return(ctx->quiet_shutdown);
2925 void SSL_set_quiet_shutdown(SSL *s,int mode)
2927 s->quiet_shutdown=mode;
2930 int SSL_get_quiet_shutdown(const SSL *s)
2932 return(s->quiet_shutdown);
2935 void SSL_set_shutdown(SSL *s,int mode)
2940 int SSL_get_shutdown(const SSL *s)
2942 return(s->shutdown);
2945 int SSL_version(const SSL *s)
2950 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2955 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2957 if (ssl->ctx == ctx)
2959 #ifndef OPENSSL_NO_TLSEXT
2961 ctx = ssl->initial_ctx;
2963 if (ssl->cert != NULL)
2964 ssl_cert_free(ssl->cert);
2965 ssl->cert = ssl_cert_dup(ctx->cert);
2966 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2967 if (ssl->ctx != NULL)
2968 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2973 #ifndef OPENSSL_NO_STDIO
2974 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2976 return(X509_STORE_set_default_paths(ctx->cert_store));
2979 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2982 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2986 void SSL_set_info_callback(SSL *ssl,
2987 void (*cb)(const SSL *ssl,int type,int val))
2989 ssl->info_callback=cb;
2992 /* One compiler (Diab DCC) doesn't like argument names in returned
2993 function pointer. */
2994 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2996 return ssl->info_callback;
2999 int SSL_state(const SSL *ssl)
3004 void SSL_set_state(SSL *ssl, int state)
3009 void SSL_set_verify_result(SSL *ssl,long arg)
3011 ssl->verify_result=arg;
3014 long SSL_get_verify_result(const SSL *ssl)
3016 return(ssl->verify_result);
3019 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3020 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3022 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
3023 new_func, dup_func, free_func);
3026 int SSL_set_ex_data(SSL *s,int idx,void *arg)
3028 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3031 void *SSL_get_ex_data(const SSL *s,int idx)
3033 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3036 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
3037 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
3039 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
3040 new_func, dup_func, free_func);
3043 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
3045 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
3048 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
3050 return(CRYPTO_get_ex_data(&s->ex_data,idx));
3058 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
3060 return(ctx->cert_store);
3063 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
3065 if (ctx->cert_store != NULL)
3066 X509_STORE_free(ctx->cert_store);
3067 ctx->cert_store=store;
3070 int SSL_want(const SSL *s)
3076 * \brief Set the callback for generating temporary RSA keys.
3077 * \param ctx the SSL context.
3078 * \param cb the callback
3081 #ifndef OPENSSL_NO_RSA
3082 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
3086 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3089 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
3093 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
3099 * \brief The RSA temporary key callback function.
3100 * \param ssl the SSL session.
3101 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
3102 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
3103 * of the required key in bits.
3104 * \return the temporary RSA key.
3105 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
3108 RSA *cb(SSL *ssl,int is_export,int keylength)
3113 * \brief Set the callback for generating temporary DH keys.
3114 * \param ctx the SSL context.
3115 * \param dh the callback
3118 #ifndef OPENSSL_NO_DH
3119 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
3122 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3125 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
3128 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
3132 #ifndef OPENSSL_NO_ECDH
3133 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3136 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3139 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
3142 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
3146 #ifndef OPENSSL_NO_PSK
3147 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
3149 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3151 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3154 if (ctx->psk_identity_hint != NULL)
3155 OPENSSL_free(ctx->psk_identity_hint);
3156 if (identity_hint != NULL)
3158 ctx->psk_identity_hint = BUF_strdup(identity_hint);
3159 if (ctx->psk_identity_hint == NULL)
3163 ctx->psk_identity_hint = NULL;
3167 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
3172 if (s->session == NULL)
3173 return 1; /* session not created yet, ignored */
3175 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
3177 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3180 if (s->session->psk_identity_hint != NULL)
3181 OPENSSL_free(s->session->psk_identity_hint);
3182 if (identity_hint != NULL)
3184 s->session->psk_identity_hint = BUF_strdup(identity_hint);
3185 if (s->session->psk_identity_hint == NULL)
3189 s->session->psk_identity_hint = NULL;
3193 const char *SSL_get_psk_identity_hint(const SSL *s)
3195 if (s == NULL || s->session == NULL)
3197 return(s->session->psk_identity_hint);
3200 const char *SSL_get_psk_identity(const SSL *s)
3202 if (s == NULL || s->session == NULL)
3204 return(s->session->psk_identity);
3207 void SSL_set_psk_client_callback(SSL *s,
3208 unsigned int (*cb)(SSL *ssl, const char *hint,
3209 char *identity, unsigned int max_identity_len, unsigned char *psk,
3210 unsigned int max_psk_len))
3212 s->psk_client_callback = cb;
3215 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3216 unsigned int (*cb)(SSL *ssl, const char *hint,
3217 char *identity, unsigned int max_identity_len, unsigned char *psk,
3218 unsigned int max_psk_len))
3220 ctx->psk_client_callback = cb;
3223 void SSL_set_psk_server_callback(SSL *s,
3224 unsigned int (*cb)(SSL *ssl, const char *identity,
3225 unsigned char *psk, unsigned int max_psk_len))
3227 s->psk_server_callback = cb;
3230 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3231 unsigned int (*cb)(SSL *ssl, const char *identity,
3232 unsigned char *psk, unsigned int max_psk_len))
3234 ctx->psk_server_callback = cb;
3238 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))
3240 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3242 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))
3244 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3247 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3248 * vairable, freeing EVP_MD_CTX previously stored in that variable, if
3249 * any. If EVP_MD pointer is passed, initializes ctx with this md
3250 * Returns newly allocated ctx;
3253 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
3255 ssl_clear_hash_ctx(hash);
3256 *hash = EVP_MD_CTX_create();
3257 if (md) EVP_DigestInit_ex(*hash,md,NULL);
3260 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3263 if (*hash) EVP_MD_CTX_destroy(*hash);
3267 void SSL_set_debug(SSL *s, int debug)
3272 int SSL_cache_hit(SSL *s)
3277 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3278 #include "../crypto/bio/bss_file.c"
3281 IMPLEMENT_STACK_OF(SSL_CIPHER)
3282 IMPLEMENT_STACK_OF(SSL_COMP)
3283 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,