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 #ifndef OPENSSL_NO_DH
155 #include <openssl/dh.h>
158 const char *SSL_version_str=OPENSSL_VERSION_TEXT;
160 SSL3_ENC_METHOD ssl3_undef_enc_method={
161 /* evil casts, but these functions are only called if there's a library bug */
162 (int (*)(SSL *,int))ssl_undefined_function,
163 (int (*)(SSL *, unsigned char *, int))ssl_undefined_function,
164 ssl_undefined_function,
165 (int (*)(SSL *, unsigned char *, unsigned char *, int))ssl_undefined_function,
166 (int (*)(SSL*, int))ssl_undefined_function,
167 (int (*)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char*, int, unsigned char *))ssl_undefined_function,
168 0, /* finish_mac_length */
169 (int (*)(SSL *, EVP_MD_CTX *, unsigned char *))ssl_undefined_function,
170 NULL, /* client_finished_label */
171 0, /* client_finished_label_len */
172 NULL, /* server_finished_label */
173 0, /* server_finished_label_len */
174 (int (*)(int))ssl_undefined_function
177 int SSL_clear(SSL *s)
180 if (s->method == NULL)
182 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
186 if (ssl_clear_bad_session(s))
188 SSL_SESSION_free(s->session);
196 #if 0 /* Disabled since version 1.10 of this file (early return not
197 * needed because SSL_clear is not called when doing renegotiation) */
198 /* This is set if we are doing dynamic renegotiation so keep
199 * the old cipher. It is sort of a SSL_clear_lite :-) */
200 if (s->new_session) return(1);
204 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
211 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
213 s->version=s->method->version;
214 s->client_version=s->version;
215 s->rwstate=SSL_NOTHING;
216 s->rstate=SSL_ST_READ_HEADER;
218 s->read_ahead=s->ctx->read_ahead;
221 if (s->init_buf != NULL)
223 BUF_MEM_free(s->init_buf);
227 ssl_clear_cipher_ctx(s);
232 /* Check to see if we were changed into a different method, if
233 * so, revert back if we are not doing session-id reuse. */
234 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
236 s->method->ssl_free(s);
237 s->method=s->ctx->method;
238 if (!s->method->ssl_new(s))
243 s->method->ssl_clear(s);
247 /** Used to change an SSL_CTXs default SSL method type */
248 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth)
250 STACK_OF(SSL_CIPHER) *sk;
254 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
255 &(ctx->cipher_list_by_id),SSL_DEFAULT_CIPHER_LIST);
256 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
258 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
264 SSL *SSL_new(SSL_CTX *ctx)
270 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
273 if (ctx->method == NULL)
275 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
279 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
280 if (s == NULL) goto err;
281 memset(s,0,sizeof(SSL));
283 #ifndef OPENSSL_NO_KRB5
284 s->kssl_ctx = kssl_ctx_new();
285 #endif /* OPENSSL_NO_KRB5 */
287 s->options=ctx->options;
289 s->max_cert_list=ctx->max_cert_list;
291 if (ctx->cert != NULL)
293 /* Earlier library versions used to copy the pointer to
294 * the CERT, not its contents; only when setting new
295 * parameters for the per-SSL copy, ssl_cert_new would be
296 * called (and the direct reference to the per-SSL_CTX
297 * settings would be lost, but those still were indirectly
298 * accessed for various purposes, and for that reason they
299 * used to be known as s->ctx->default_cert).
300 * Now we don't look at the SSL_CTX's CERT after having
301 * duplicated it once. */
303 s->cert = ssl_cert_dup(ctx->cert);
308 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
310 s->read_ahead=ctx->read_ahead;
311 s->msg_callback=ctx->msg_callback;
312 s->msg_callback_arg=ctx->msg_callback_arg;
313 s->verify_mode=ctx->verify_mode;
315 s->verify_depth=ctx->verify_depth;
317 s->sid_ctx_length=ctx->sid_ctx_length;
318 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
319 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
320 s->verify_callback=ctx->default_verify_callback;
321 s->generate_session_id=ctx->generate_session_id;
323 s->param = X509_VERIFY_PARAM_new();
326 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
328 s->purpose = ctx->purpose;
329 s->trust = ctx->trust;
331 s->quiet_shutdown=ctx->quiet_shutdown;
332 s->max_send_fragment = ctx->max_send_fragment;
334 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
336 #ifndef OPENSSL_NO_TLSEXT
337 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
341 s->verify_result=X509_V_OK;
343 s->method=ctx->method;
345 if (!s->method->ssl_new(s))
349 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
353 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
355 #ifndef OPENSSL_NO_PSK
356 s->psk_client_callback=ctx->psk_client_callback;
357 s->psk_server_callback=ctx->psk_server_callback;
365 ssl_cert_free(s->cert);
367 SSL_CTX_free(s->ctx); /* decrement reference count */
370 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
374 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
375 unsigned int sid_ctx_len)
377 if(sid_ctx_len > sizeof ctx->sid_ctx)
379 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
382 ctx->sid_ctx_length=sid_ctx_len;
383 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
388 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
389 unsigned int sid_ctx_len)
391 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
393 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
396 ssl->sid_ctx_length=sid_ctx_len;
397 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
402 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
404 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
405 ctx->generate_session_id = cb;
406 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
410 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
412 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
413 ssl->generate_session_id = cb;
414 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
418 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
421 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
422 * we can "construct" a session to give us the desired check - ie. to
423 * find if there's a session in the hash table that would conflict with
424 * any new session built out of this id/id_len and the ssl_version in
425 * use by this SSL. */
428 if(id_len > sizeof r.session_id)
431 r.ssl_version = ssl->version;
432 r.session_id_length = id_len;
433 memcpy(r.session_id, id, id_len);
434 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
435 * callback is calling us to check the uniqueness of a shorter ID, it
436 * must be compared as a padded-out ID because that is what it will be
437 * converted to when the callback has finished choosing it. */
438 if((r.ssl_version == SSL2_VERSION) &&
439 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
441 memset(r.session_id + id_len, 0,
442 SSL2_SSL_SESSION_ID_LENGTH - id_len);
443 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
446 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
447 p = (SSL_SESSION *)lh_retrieve(ssl->ctx->sessions, &r);
448 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
452 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
454 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
457 int SSL_set_purpose(SSL *s, int purpose)
459 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
462 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
464 return X509_VERIFY_PARAM_set_trust(s->param, trust);
467 int SSL_set_trust(SSL *s, int trust)
469 return X509_VERIFY_PARAM_set_trust(s->param, trust);
472 void SSL_free(SSL *s)
479 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
487 fprintf(stderr,"SSL_free, bad reference count\n");
493 X509_VERIFY_PARAM_free(s->param);
495 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
499 /* If the buffering BIO is in place, pop it off */
500 if (s->bbio == s->wbio)
502 s->wbio=BIO_pop(s->wbio);
508 BIO_free_all(s->rbio);
509 if ((s->wbio != NULL) && (s->wbio != s->rbio))
510 BIO_free_all(s->wbio);
512 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
514 /* add extra stuff */
515 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
516 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
518 /* Make the next call work :-) */
519 if (s->session != NULL)
521 ssl_clear_bad_session(s);
522 SSL_SESSION_free(s->session);
525 ssl_clear_cipher_ctx(s);
527 if (s->cert != NULL) ssl_cert_free(s->cert);
528 /* Free up if allocated */
530 if (s->ctx) SSL_CTX_free(s->ctx);
531 #ifndef OPENSSL_NO_TLSEXT
532 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
533 #ifndef OPENSSL_NO_EC
534 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
535 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
536 #endif /* OPENSSL_NO_EC */
539 if (s->client_CA != NULL)
540 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
542 if (s->method != NULL) s->method->ssl_free(s);
544 #ifndef OPENSSL_NO_KRB5
545 if (s->kssl_ctx != NULL)
546 kssl_ctx_free(s->kssl_ctx);
547 #endif /* OPENSSL_NO_KRB5 */
552 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
554 /* If the output buffering BIO is still in place, remove it
558 if (s->wbio == s->bbio)
560 s->wbio=s->wbio->next_bio;
561 s->bbio->next_bio=NULL;
564 if ((s->rbio != NULL) && (s->rbio != rbio))
565 BIO_free_all(s->rbio);
566 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
567 BIO_free_all(s->wbio);
572 BIO *SSL_get_rbio(const SSL *s)
575 BIO *SSL_get_wbio(const SSL *s)
578 int SSL_get_fd(const SSL *s)
580 return(SSL_get_rfd(s));
583 int SSL_get_rfd(const SSL *s)
589 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
595 int SSL_get_wfd(const SSL *s)
601 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
607 #ifndef OPENSSL_NO_SOCK
608 int SSL_set_fd(SSL *s,int fd)
613 bio=BIO_new(BIO_s_socket());
617 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
620 BIO_set_fd(bio,fd,BIO_NOCLOSE);
621 SSL_set_bio(s,bio,bio);
627 int SSL_set_wfd(SSL *s,int fd)
632 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
633 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
635 bio=BIO_new(BIO_s_socket());
638 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
639 BIO_set_fd(bio,fd,BIO_NOCLOSE);
640 SSL_set_bio(s,SSL_get_rbio(s),bio);
643 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
649 int SSL_set_rfd(SSL *s,int fd)
654 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
655 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
657 bio=BIO_new(BIO_s_socket());
661 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
664 BIO_set_fd(bio,fd,BIO_NOCLOSE);
665 SSL_set_bio(s,bio,SSL_get_wbio(s));
668 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
676 /* return length of latest Finished message we sent, copy to 'buf' */
677 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
683 ret = s->s3->tmp.finish_md_len;
686 memcpy(buf, s->s3->tmp.finish_md, count);
691 /* return length of latest Finished message we expected, copy to 'buf' */
692 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
698 ret = s->s3->tmp.peer_finish_md_len;
701 memcpy(buf, s->s3->tmp.peer_finish_md, count);
707 int SSL_get_verify_mode(const SSL *s)
709 return(s->verify_mode);
712 int SSL_get_verify_depth(const SSL *s)
714 return X509_VERIFY_PARAM_get_depth(s->param);
717 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
719 return(s->verify_callback);
722 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
724 return(ctx->verify_mode);
727 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
729 return X509_VERIFY_PARAM_get_depth(ctx->param);
732 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
734 return(ctx->default_verify_callback);
737 void SSL_set_verify(SSL *s,int mode,
738 int (*callback)(int ok,X509_STORE_CTX *ctx))
741 if (callback != NULL)
742 s->verify_callback=callback;
745 void SSL_set_verify_depth(SSL *s,int depth)
747 X509_VERIFY_PARAM_set_depth(s->param, depth);
750 void SSL_set_read_ahead(SSL *s,int yes)
755 int SSL_get_read_ahead(const SSL *s)
757 return(s->read_ahead);
760 int SSL_pending(const SSL *s)
762 /* SSL_pending cannot work properly if read-ahead is enabled
763 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
764 * and it is impossible to fix since SSL_pending cannot report
765 * errors that may be observed while scanning the new data.
766 * (Note that SSL_pending() is often used as a boolean value,
767 * so we'd better not return -1.)
769 return(s->method->ssl_pending(s));
772 X509 *SSL_get_peer_certificate(const SSL *s)
776 if ((s == NULL) || (s->session == NULL))
781 if (r == NULL) return(r);
783 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
788 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
792 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
795 r=s->session->sess_cert->cert_chain;
797 /* If we are a client, cert_chain includes the peer's own
798 * certificate; if we are a server, it does not. */
803 /* Now in theory, since the calling process own 't' it should be safe to
804 * modify. We need to be able to read f without being hassled */
805 void SSL_copy_session_id(SSL *t,const SSL *f)
809 /* Do we need to to SSL locking? */
810 SSL_set_session(t,SSL_get_session(f));
812 /* what if we are setup as SSLv2 but want to talk SSLv3 or
814 if (t->method != f->method)
816 t->method->ssl_free(t); /* cleanup current */
817 t->method=f->method; /* change method */
818 t->method->ssl_new(t); /* setup new */
824 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
829 if (tmp != NULL) ssl_cert_free(tmp);
830 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
833 /* Fix this so it checks all the valid key/cert options */
834 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
836 if ( (ctx == NULL) ||
837 (ctx->cert == NULL) ||
838 (ctx->cert->key->x509 == NULL))
840 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
843 if (ctx->cert->key->privatekey == NULL)
845 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
848 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
851 /* Fix this function so that it takes an optional type parameter */
852 int SSL_check_private_key(const SSL *ssl)
856 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
859 if (ssl->cert == NULL)
861 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
864 if (ssl->cert->key->x509 == NULL)
866 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
869 if (ssl->cert->key->privatekey == NULL)
871 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
874 return(X509_check_private_key(ssl->cert->key->x509,
875 ssl->cert->key->privatekey));
878 int SSL_accept(SSL *s)
880 if (s->handshake_func == 0)
881 /* Not properly initialized yet */
882 SSL_set_accept_state(s);
884 return(s->method->ssl_accept(s));
887 int SSL_connect(SSL *s)
889 if (s->handshake_func == 0)
890 /* Not properly initialized yet */
891 SSL_set_connect_state(s);
893 return(s->method->ssl_connect(s));
896 long SSL_get_default_timeout(const SSL *s)
898 return(s->method->get_timeout());
901 int SSL_read(SSL *s,void *buf,int num)
903 if (s->handshake_func == 0)
905 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
909 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
911 s->rwstate=SSL_NOTHING;
914 return(s->method->ssl_read(s,buf,num));
917 int SSL_peek(SSL *s,void *buf,int num)
919 if (s->handshake_func == 0)
921 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
925 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
929 return(s->method->ssl_peek(s,buf,num));
932 int SSL_write(SSL *s,const void *buf,int num)
934 if (s->handshake_func == 0)
936 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
940 if (s->shutdown & SSL_SENT_SHUTDOWN)
942 s->rwstate=SSL_NOTHING;
943 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
946 return(s->method->ssl_write(s,buf,num));
949 int SSL_shutdown(SSL *s)
951 /* Note that this function behaves differently from what one might
952 * expect. Return values are 0 for no success (yet),
953 * 1 for success; but calling it once is usually not enough,
954 * even if blocking I/O is used (see ssl3_shutdown).
957 if (s->handshake_func == 0)
959 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
963 if ((s != NULL) && !SSL_in_init(s))
964 return(s->method->ssl_shutdown(s));
969 int SSL_renegotiate(SSL *s)
971 if (s->new_session == 0)
975 return(s->method->ssl_renegotiate(s));
978 int SSL_renegotiate_pending(SSL *s)
980 /* becomes true when negotiation is requested;
981 * false again once a handshake has finished */
982 return (s->new_session != 0);
985 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
991 case SSL_CTRL_GET_READ_AHEAD:
992 return(s->read_ahead);
993 case SSL_CTRL_SET_READ_AHEAD:
998 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
999 s->msg_callback_arg = parg;
1002 case SSL_CTRL_OPTIONS:
1003 return(s->options|=larg);
1005 return(s->mode|=larg);
1006 case SSL_CTRL_GET_MAX_CERT_LIST:
1007 return(s->max_cert_list);
1008 case SSL_CTRL_SET_MAX_CERT_LIST:
1010 s->max_cert_list=larg;
1012 case SSL_CTRL_SET_MTU:
1013 if (SSL_version(s) == DTLS1_VERSION)
1019 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1020 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1022 s->max_send_fragment = larg;
1025 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1029 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1033 case SSL_CTRL_SET_MSG_CALLBACK:
1034 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1038 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1042 struct lhash_st *SSL_CTX_sessions(SSL_CTX *ctx)
1044 return ctx->sessions;
1047 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1053 case SSL_CTRL_GET_READ_AHEAD:
1054 return(ctx->read_ahead);
1055 case SSL_CTRL_SET_READ_AHEAD:
1057 ctx->read_ahead=larg;
1060 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1061 ctx->msg_callback_arg = parg;
1064 case SSL_CTRL_GET_MAX_CERT_LIST:
1065 return(ctx->max_cert_list);
1066 case SSL_CTRL_SET_MAX_CERT_LIST:
1067 l=ctx->max_cert_list;
1068 ctx->max_cert_list=larg;
1071 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1072 l=ctx->session_cache_size;
1073 ctx->session_cache_size=larg;
1075 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1076 return(ctx->session_cache_size);
1077 case SSL_CTRL_SET_SESS_CACHE_MODE:
1078 l=ctx->session_cache_mode;
1079 ctx->session_cache_mode=larg;
1081 case SSL_CTRL_GET_SESS_CACHE_MODE:
1082 return(ctx->session_cache_mode);
1084 case SSL_CTRL_SESS_NUMBER:
1085 return(ctx->sessions->num_items);
1086 case SSL_CTRL_SESS_CONNECT:
1087 return(ctx->stats.sess_connect);
1088 case SSL_CTRL_SESS_CONNECT_GOOD:
1089 return(ctx->stats.sess_connect_good);
1090 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1091 return(ctx->stats.sess_connect_renegotiate);
1092 case SSL_CTRL_SESS_ACCEPT:
1093 return(ctx->stats.sess_accept);
1094 case SSL_CTRL_SESS_ACCEPT_GOOD:
1095 return(ctx->stats.sess_accept_good);
1096 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1097 return(ctx->stats.sess_accept_renegotiate);
1098 case SSL_CTRL_SESS_HIT:
1099 return(ctx->stats.sess_hit);
1100 case SSL_CTRL_SESS_CB_HIT:
1101 return(ctx->stats.sess_cb_hit);
1102 case SSL_CTRL_SESS_MISSES:
1103 return(ctx->stats.sess_miss);
1104 case SSL_CTRL_SESS_TIMEOUTS:
1105 return(ctx->stats.sess_timeout);
1106 case SSL_CTRL_SESS_CACHE_FULL:
1107 return(ctx->stats.sess_cache_full);
1108 case SSL_CTRL_OPTIONS:
1109 return(ctx->options|=larg);
1111 return(ctx->mode|=larg);
1112 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1113 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1115 ctx->max_send_fragment = larg;
1118 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1122 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1126 case SSL_CTRL_SET_MSG_CALLBACK:
1127 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1131 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1135 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1143 return((l > 0)?1:-1);
1146 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1147 const SSL_CIPHER * const *bp)
1151 l=(*ap)->id-(*bp)->id;
1155 return((l > 0)?1:-1);
1158 /** return a STACK of the ciphers available for the SSL and in order of
1160 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1164 if (s->cipher_list != NULL)
1166 return(s->cipher_list);
1168 else if ((s->ctx != NULL) &&
1169 (s->ctx->cipher_list != NULL))
1171 return(s->ctx->cipher_list);
1177 /** return a STACK of the ciphers available for the SSL and in order of
1179 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1183 if (s->cipher_list_by_id != NULL)
1185 return(s->cipher_list_by_id);
1187 else if ((s->ctx != NULL) &&
1188 (s->ctx->cipher_list_by_id != NULL))
1190 return(s->ctx->cipher_list_by_id);
1196 /** The old interface to get the same thing as SSL_get_ciphers() */
1197 const char *SSL_get_cipher_list(const SSL *s,int n)
1200 STACK_OF(SSL_CIPHER) *sk;
1202 if (s == NULL) return(NULL);
1203 sk=SSL_get_ciphers(s);
1204 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1206 c=sk_SSL_CIPHER_value(sk,n);
1207 if (c == NULL) return(NULL);
1211 /** specify the ciphers to be used by default by the SSL_CTX */
1212 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1214 STACK_OF(SSL_CIPHER) *sk;
1216 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1217 &ctx->cipher_list_by_id,str);
1218 /* ssl_create_cipher_list may return an empty stack if it
1219 * was unable to find a cipher matching the given rule string
1220 * (for example if the rule string specifies a cipher which
1221 * has been disabled). This is not an error as far as
1222 * ssl_create_cipher_list is concerned, and hence
1223 * ctx->cipher_list and ctx->cipher_list_by_id has been
1227 else if (sk_SSL_CIPHER_num(sk) == 0)
1229 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1235 /** specify the ciphers to be used by the SSL */
1236 int SSL_set_cipher_list(SSL *s,const char *str)
1238 STACK_OF(SSL_CIPHER) *sk;
1240 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1241 &s->cipher_list_by_id,str);
1242 /* see comment in SSL_CTX_set_cipher_list */
1245 else if (sk_SSL_CIPHER_num(sk) == 0)
1247 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1253 /* works well for SSLv2, not so good for SSLv3 */
1254 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1258 STACK_OF(SSL_CIPHER) *sk;
1262 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1267 sk=s->session->ciphers;
1268 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1270 /* Decrement for either the ':' or a '\0' */
1272 c=sk_SSL_CIPHER_value(sk,i);
1273 for (cp=c->name; *cp; )
1289 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1290 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1295 #ifndef OPENSSL_NO_KRB5
1296 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1297 #endif /* OPENSSL_NO_KRB5 */
1299 if (sk == NULL) return(0);
1302 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1304 c=sk_SSL_CIPHER_value(sk,i);
1305 #ifndef OPENSSL_NO_KRB5
1306 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) &&
1309 #endif /* OPENSSL_NO_KRB5 */
1310 #ifndef OPENSSL_NO_PSK
1311 /* with PSK there must be client callback set */
1312 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) &&
1313 s->psk_client_callback == NULL)
1315 #endif /* OPENSSL_NO_PSK */
1316 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1322 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1323 STACK_OF(SSL_CIPHER) **skp)
1326 STACK_OF(SSL_CIPHER) *sk;
1329 n=ssl_put_cipher_by_char(s,NULL,NULL);
1332 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1335 if ((skp == NULL) || (*skp == NULL))
1336 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1340 sk_SSL_CIPHER_zero(sk);
1343 for (i=0; i<num; i+=n)
1345 c=ssl_get_cipher_by_char(s,p);
1349 if (!sk_SSL_CIPHER_push(sk,c))
1351 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1361 if ((skp == NULL) || (*skp == NULL))
1362 sk_SSL_CIPHER_free(sk);
1367 #ifndef OPENSSL_TLSEXT
1368 /** return a servername extension value if provided in Client Hello, or NULL.
1369 * So far, only host_name types are defined (RFC 3546).
1372 const char *SSL_get_servername(const SSL *s, const int type)
1374 if (type != TLSEXT_NAMETYPE_host_name)
1377 return s->session && !s->tlsext_hostname ?
1378 s->session->tlsext_hostname :
1382 int SSL_get_servername_type(const SSL *s)
1384 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1385 return TLSEXT_NAMETYPE_host_name;
1390 unsigned long SSL_SESSION_hash(const SSL_SESSION *a)
1395 ((unsigned int) a->session_id[0] )|
1396 ((unsigned int) a->session_id[1]<< 8L)|
1397 ((unsigned long)a->session_id[2]<<16L)|
1398 ((unsigned long)a->session_id[3]<<24L);
1402 /* NB: If this function (or indeed the hash function which uses a sort of
1403 * coarser function than this one) is changed, ensure
1404 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1405 * able to construct an SSL_SESSION that will collide with any existing session
1406 * with a matching session ID. */
1407 int SSL_SESSION_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1409 if (a->ssl_version != b->ssl_version)
1411 if (a->session_id_length != b->session_id_length)
1413 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1416 /* These wrapper functions should remain rather than redeclaring
1417 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1418 * variable. The reason is that the functions aren't static, they're exposed via
1420 static IMPLEMENT_LHASH_HASH_FN(SSL_SESSION_hash, SSL_SESSION *)
1421 static IMPLEMENT_LHASH_COMP_FN(SSL_SESSION_cmp, SSL_SESSION *)
1423 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1429 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1433 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1435 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1438 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1442 memset(ret,0,sizeof(SSL_CTX));
1446 ret->cert_store=NULL;
1447 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1448 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1449 ret->session_cache_head=NULL;
1450 ret->session_cache_tail=NULL;
1452 /* We take the system default */
1453 ret->session_timeout=meth->get_timeout();
1455 ret->new_session_cb=0;
1456 ret->remove_session_cb=0;
1457 ret->get_session_cb=0;
1458 ret->generate_session_id=0;
1460 memset((char *)&ret->stats,0,sizeof(ret->stats));
1463 ret->quiet_shutdown=0;
1465 /* ret->cipher=NULL;*/
1466 /* ret->s2->challenge=NULL;
1467 ret->master_key=NULL;
1469 ret->s2->conn_id=NULL; */
1471 ret->info_callback=NULL;
1473 ret->app_verify_callback=0;
1474 ret->app_verify_arg=NULL;
1476 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1478 ret->msg_callback=0;
1479 ret->msg_callback_arg=NULL;
1480 ret->verify_mode=SSL_VERIFY_NONE;
1482 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1484 ret->sid_ctx_length=0;
1485 ret->default_verify_callback=NULL;
1486 if ((ret->cert=ssl_cert_new()) == NULL)
1489 ret->default_passwd_callback=0;
1490 ret->default_passwd_callback_userdata=NULL;
1491 ret->client_cert_cb=0;
1492 ret->app_gen_cookie_cb=0;
1493 ret->app_verify_cookie_cb=0;
1495 ret->sessions=lh_new(LHASH_HASH_FN(SSL_SESSION_hash),
1496 LHASH_COMP_FN(SSL_SESSION_cmp));
1497 if (ret->sessions == NULL) goto err;
1498 ret->cert_store=X509_STORE_new();
1499 if (ret->cert_store == NULL) goto err;
1501 ssl_create_cipher_list(ret->method,
1502 &ret->cipher_list,&ret->cipher_list_by_id,
1503 SSL_DEFAULT_CIPHER_LIST);
1504 if (ret->cipher_list == NULL
1505 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1507 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1511 ret->param = X509_VERIFY_PARAM_new();
1515 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1517 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1520 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1522 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1525 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1527 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1531 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1534 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1536 ret->extra_certs=NULL;
1537 ret->comp_methods=SSL_COMP_get_compression_methods();
1539 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1541 #ifndef OPENSSL_NO_TLSEXT
1542 ret->tlsext_servername_callback = 0;
1543 ret->tlsext_servername_arg = NULL;
1545 #ifndef OPENSSL_NO_PSK
1546 ret->psk_identity_hint=NULL;
1547 ret->psk_client_callback=NULL;
1548 ret->psk_server_callback=NULL;
1552 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1554 if (ret != NULL) SSL_CTX_free(ret);
1559 static void SSL_COMP_free(SSL_COMP *comp)
1560 { OPENSSL_free(comp); }
1563 void SSL_CTX_free(SSL_CTX *a)
1567 if (a == NULL) return;
1569 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1571 REF_PRINT("SSL_CTX",a);
1577 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1583 X509_VERIFY_PARAM_free(a->param);
1586 * Free internal session cache. However: the remove_cb() may reference
1587 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1588 * after the sessions were flushed.
1589 * As the ex_data handling routines might also touch the session cache,
1590 * the most secure solution seems to be: empty (flush) the cache, then
1591 * free ex_data, then finally free the cache.
1592 * (See ticket [openssl.org #212].)
1594 if (a->sessions != NULL)
1595 SSL_CTX_flush_sessions(a,0);
1597 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1599 if (a->sessions != NULL)
1600 lh_free(a->sessions);
1602 if (a->cert_store != NULL)
1603 X509_STORE_free(a->cert_store);
1604 if (a->cipher_list != NULL)
1605 sk_SSL_CIPHER_free(a->cipher_list);
1606 if (a->cipher_list_by_id != NULL)
1607 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1608 if (a->cert != NULL)
1609 ssl_cert_free(a->cert);
1610 if (a->client_CA != NULL)
1611 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1612 if (a->extra_certs != NULL)
1613 sk_X509_pop_free(a->extra_certs,X509_free);
1614 #if 0 /* This should never be done, since it removes a global database */
1615 if (a->comp_methods != NULL)
1616 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1618 a->comp_methods = NULL;
1621 #ifndef OPENSSL_NO_PSK
1622 if (a->psk_identity_hint)
1623 OPENSSL_free(a->psk_identity_hint);
1628 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1630 ctx->default_passwd_callback=cb;
1633 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1635 ctx->default_passwd_callback_userdata=u;
1638 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1640 ctx->app_verify_callback=cb;
1641 ctx->app_verify_arg=arg;
1644 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1646 ctx->verify_mode=mode;
1647 ctx->default_verify_callback=cb;
1650 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1652 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1655 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
1658 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1659 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1660 int rsa_tmp_export,dh_tmp_export,kl;
1661 unsigned long mask_k,mask_a,emask_k,emask_a;
1662 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
1663 #ifndef OPENSSL_NO_ECDH
1667 EVP_PKEY *ecc_pkey = NULL;
1668 int signature_nid = 0;
1670 if (c == NULL) return;
1672 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1674 #ifndef OPENSSL_NO_RSA
1675 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1676 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1677 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1679 rsa_tmp=rsa_tmp_export=0;
1681 #ifndef OPENSSL_NO_DH
1682 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1683 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1684 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1686 dh_tmp=dh_tmp_export=0;
1689 #ifndef OPENSSL_NO_ECDH
1690 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
1692 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1693 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1694 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1695 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1696 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1697 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1698 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1699 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1700 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1701 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1702 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1703 /* FIX THIS EAY EAY EAY */
1704 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1705 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1706 cpk= &(c->pkeys[SSL_PKEY_ECC]);
1707 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
1714 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1715 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
1716 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1719 if (rsa_enc || (rsa_tmp && rsa_sign))
1721 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1725 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1726 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1727 (rsa_enc || rsa_sign || dsa_sign))
1729 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1730 (rsa_enc || rsa_sign || dsa_sign))
1740 if (dh_rsa) mask_k|=SSL_kDHr;
1741 if (dh_rsa_export) emask_k|=SSL_kDHr;
1743 if (dh_dsa) mask_k|=SSL_kDHd;
1744 if (dh_dsa_export) emask_k|=SSL_kDHd;
1746 if (rsa_enc || rsa_sign)
1761 #ifndef OPENSSL_NO_KRB5
1768 /* An ECC certificate may be usable for ECDH and/or
1769 * ECDSA cipher suites depending on the key usage extension.
1773 /* This call populates extension flags (ex_flags) */
1774 x = (c->pkeys[SSL_PKEY_ECC]).x509;
1775 X509_check_purpose(x, -1, 0);
1776 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1777 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
1778 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1779 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
1780 ecc_pkey = X509_get_pubkey(x);
1781 ecc_pkey_size = (ecc_pkey != NULL) ?
1782 EVP_PKEY_bits(ecc_pkey) : 0;
1783 EVP_PKEY_free(ecc_pkey);
1784 if ((x->sig_alg) && (x->sig_alg->algorithm))
1785 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1786 #ifndef OPENSSL_NO_ECDH
1789 const char *sig = OBJ_nid2ln(signature_nid);
1796 if (strstr(sig, "WithRSA"))
1800 if (ecc_pkey_size <= 163)
1802 emask_k|=SSL_kECDHr;
1807 if (signature_nid == NID_ecdsa_with_SHA1)
1811 if (ecc_pkey_size <= 163)
1813 emask_k|=SSL_kECDHe;
1819 #ifndef OPENSSL_NO_ECDSA
1823 emask_a|=SSL_aECDSA;
1828 #ifndef OPENSSL_NO_ECDH
1832 emask_k|=SSL_kEECDH;
1836 #ifndef OPENSSL_NO_PSK
1839 emask_k |= SSL_kPSK;
1840 emask_a |= SSL_aPSK;
1845 c->export_mask_k=emask_k;
1846 c->export_mask_a=emask_a;
1850 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
1851 #define ku_reject(x, usage) \
1852 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
1854 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs)
1856 unsigned long alg_k, alg_a;
1857 EVP_PKEY *pkey = NULL;
1859 int signature_nid = 0;
1861 alg_k = cs->algorithm_mkey;
1862 alg_a = cs->algorithm_auth;
1864 if (SSL_C_IS_EXPORT(cs))
1866 /* ECDH key length in export ciphers must be <= 163 bits */
1867 pkey = X509_get_pubkey(x);
1868 if (pkey == NULL) return 0;
1869 keysize = EVP_PKEY_bits(pkey);
1870 EVP_PKEY_free(pkey);
1871 if (keysize > 163) return 0;
1874 /* This call populates the ex_flags field correctly */
1875 X509_check_purpose(x, -1, 0);
1876 if ((x->sig_alg) && (x->sig_alg->algorithm))
1877 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1878 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
1880 /* key usage, if present, must allow key agreement */
1881 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
1883 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
1886 if (alg_k & SSL_kECDHe)
1888 /* signature alg must be ECDSA */
1889 if (signature_nid != NID_ecdsa_with_SHA1)
1891 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
1895 if (alg_k & SSL_kECDHr)
1897 /* signature alg must be RSA */
1899 const char *sig = OBJ_nid2ln(signature_nid);
1905 if (strstr(sig, "WithRSA") == NULL)
1907 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
1912 if (alg_a & SSL_aECDSA)
1914 /* key usage, if present, must allow signing */
1915 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
1917 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
1922 return 1; /* all checks are ok */
1925 /* THIS NEEDS CLEANING UP */
1926 X509 *ssl_get_server_send_cert(SSL *s)
1928 unsigned long alg_k,alg_a,mask_k,mask_a;
1933 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
1934 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
1937 mask_k = c->export_mask_k;
1938 mask_a = c->export_mask_a;
1946 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
1947 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
1949 if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
1951 /* we don't need to look at SSL_kEECDH
1952 * since no certificate is needed for
1953 * anon ECDH and for authenticated
1954 * EECDH, the check for the auth
1955 * algorithm will set i correctly
1956 * NOTE: For ECDH-RSA, we need an ECC
1957 * not an RSA cert but for EECDH-RSA
1958 * we need an RSA cert. Placing the
1959 * checks for SSL_kECDH before RSA
1960 * checks ensures the correct cert is chosen.
1964 else if (alg_a & SSL_aECDSA)
1968 else if (alg_k & SSL_kDHr)
1970 else if (alg_k & SSL_kDHd)
1972 else if (alg_a & SSL_aDSS)
1973 i=SSL_PKEY_DSA_SIGN;
1974 else if (alg_a & SSL_aRSA)
1976 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
1977 i=SSL_PKEY_RSA_SIGN;
1981 else if (alg_a & SSL_aKRB5)
1983 /* VRS something else here? */
1986 else /* if (alg_a & SSL_aNULL) */
1988 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
1991 if (c->pkeys[i].x509 == NULL) return(NULL);
1993 return(c->pkeys[i].x509);
1996 EVP_PKEY *ssl_get_sign_pkey(SSL *s,SSL_CIPHER *cipher)
1998 unsigned long alg_a;
2001 alg_a = cipher->algorithm_auth;
2004 if ((alg_a & SSL_aDSS) &&
2005 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2006 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
2007 else if (alg_a & SSL_aRSA)
2009 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2010 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
2011 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2012 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
2016 else if ((alg_a & SSL_aECDSA) &&
2017 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2018 return(c->pkeys[SSL_PKEY_ECC].privatekey);
2019 else /* if (alg_a & SSL_aNULL) */
2021 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2026 void ssl_update_cache(SSL *s,int mode)
2030 /* If the session_id_length is 0, we are not supposed to cache it,
2031 * and it would be rather hard to do anyway :-) */
2032 if (s->session->session_id_length == 0) return;
2034 i=s->session_ctx->session_cache_mode;
2035 if ((i & mode) && (!s->hit)
2036 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2037 || SSL_CTX_add_session(s->session_ctx,s->session))
2038 && (s->session_ctx->new_session_cb != NULL))
2040 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2041 if (!s->session_ctx->new_session_cb(s,s->session))
2042 SSL_SESSION_free(s->session);
2045 /* auto flush every 255 connections */
2046 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2047 ((i & mode) == mode))
2049 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2050 ?s->session_ctx->stats.sess_connect_good
2051 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2053 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2058 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2063 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2068 if (s->method != meth)
2070 if (s->handshake_func != NULL)
2071 conn=(s->handshake_func == s->method->ssl_connect);
2073 if (s->method->version == meth->version)
2077 s->method->ssl_free(s);
2079 ret=s->method->ssl_new(s);
2083 s->handshake_func=meth->ssl_connect;
2085 s->handshake_func=meth->ssl_accept;
2090 int SSL_get_error(const SSL *s,int i)
2096 if (i > 0) return(SSL_ERROR_NONE);
2098 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2099 * etc, where we do encode the error */
2100 if ((l=ERR_peek_error()) != 0)
2102 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2103 return(SSL_ERROR_SYSCALL);
2105 return(SSL_ERROR_SSL);
2108 if ((i < 0) && SSL_want_read(s))
2110 bio=SSL_get_rbio(s);
2111 if (BIO_should_read(bio))
2112 return(SSL_ERROR_WANT_READ);
2113 else if (BIO_should_write(bio))
2114 /* This one doesn't make too much sense ... We never try
2115 * to write to the rbio, and an application program where
2116 * rbio and wbio are separate couldn't even know what it
2118 * However if we ever set s->rwstate incorrectly
2119 * (so that we have SSL_want_read(s) instead of
2120 * SSL_want_write(s)) and rbio and wbio *are* the same,
2121 * this test works around that bug; so it might be safer
2123 return(SSL_ERROR_WANT_WRITE);
2124 else if (BIO_should_io_special(bio))
2126 reason=BIO_get_retry_reason(bio);
2127 if (reason == BIO_RR_CONNECT)
2128 return(SSL_ERROR_WANT_CONNECT);
2129 else if (reason == BIO_RR_ACCEPT)
2130 return(SSL_ERROR_WANT_ACCEPT);
2132 return(SSL_ERROR_SYSCALL); /* unknown */
2136 if ((i < 0) && SSL_want_write(s))
2138 bio=SSL_get_wbio(s);
2139 if (BIO_should_write(bio))
2140 return(SSL_ERROR_WANT_WRITE);
2141 else if (BIO_should_read(bio))
2142 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2143 return(SSL_ERROR_WANT_READ);
2144 else if (BIO_should_io_special(bio))
2146 reason=BIO_get_retry_reason(bio);
2147 if (reason == BIO_RR_CONNECT)
2148 return(SSL_ERROR_WANT_CONNECT);
2149 else if (reason == BIO_RR_ACCEPT)
2150 return(SSL_ERROR_WANT_ACCEPT);
2152 return(SSL_ERROR_SYSCALL);
2155 if ((i < 0) && SSL_want_x509_lookup(s))
2157 return(SSL_ERROR_WANT_X509_LOOKUP);
2162 if (s->version == SSL2_VERSION)
2164 /* assume it is the socket being closed */
2165 return(SSL_ERROR_ZERO_RETURN);
2169 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2170 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2171 return(SSL_ERROR_ZERO_RETURN);
2174 return(SSL_ERROR_SYSCALL);
2177 int SSL_do_handshake(SSL *s)
2181 if (s->handshake_func == NULL)
2183 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2187 s->method->ssl_renegotiate_check(s);
2189 if (SSL_in_init(s) || SSL_in_before(s))
2191 ret=s->handshake_func(s);
2196 /* For the next 2 functions, SSL_clear() sets shutdown and so
2197 * one of these calls will reset it */
2198 void SSL_set_accept_state(SSL *s)
2202 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2203 s->handshake_func=s->method->ssl_accept;
2204 /* clear the current cipher */
2205 ssl_clear_cipher_ctx(s);
2208 void SSL_set_connect_state(SSL *s)
2212 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2213 s->handshake_func=s->method->ssl_connect;
2214 /* clear the current cipher */
2215 ssl_clear_cipher_ctx(s);
2218 int ssl_undefined_function(SSL *s)
2220 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2224 int ssl_undefined_void_function(void)
2226 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2230 int ssl_undefined_const_function(const SSL *s)
2232 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2236 SSL_METHOD *ssl_bad_method(int ver)
2238 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2242 const char *SSL_get_version(const SSL *s)
2244 if (s->version == TLS1_VERSION)
2246 else if (s->version == SSL3_VERSION)
2248 else if (s->version == SSL2_VERSION)
2254 SSL *SSL_dup(SSL *s)
2256 STACK_OF(X509_NAME) *sk;
2261 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2264 ret->version = s->version;
2265 ret->type = s->type;
2266 ret->method = s->method;
2268 if (s->session != NULL)
2270 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2271 SSL_copy_session_id(ret,s);
2275 /* No session has been established yet, so we have to expect
2276 * that s->cert or ret->cert will be changed later --
2277 * they should not both point to the same object,
2278 * and thus we can't use SSL_copy_session_id. */
2280 ret->method->ssl_free(ret);
2281 ret->method = s->method;
2282 ret->method->ssl_new(ret);
2284 if (s->cert != NULL)
2286 if (ret->cert != NULL)
2288 ssl_cert_free(ret->cert);
2290 ret->cert = ssl_cert_dup(s->cert);
2291 if (ret->cert == NULL)
2295 SSL_set_session_id_context(ret,
2296 s->sid_ctx, s->sid_ctx_length);
2299 ret->options=s->options;
2301 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2302 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2303 ret->msg_callback = s->msg_callback;
2304 ret->msg_callback_arg = s->msg_callback_arg;
2305 SSL_set_verify(ret,SSL_get_verify_mode(s),
2306 SSL_get_verify_callback(s));
2307 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2308 ret->generate_session_id = s->generate_session_id;
2310 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2312 ret->debug=s->debug;
2314 /* copy app data, a little dangerous perhaps */
2315 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2318 /* setup rbio, and wbio */
2319 if (s->rbio != NULL)
2321 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2324 if (s->wbio != NULL)
2326 if (s->wbio != s->rbio)
2328 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2332 ret->wbio=ret->rbio;
2334 ret->rwstate = s->rwstate;
2335 ret->in_handshake = s->in_handshake;
2336 ret->handshake_func = s->handshake_func;
2337 ret->server = s->server;
2338 ret->new_session = s->new_session;
2339 ret->quiet_shutdown = s->quiet_shutdown;
2340 ret->shutdown=s->shutdown;
2341 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2342 ret->rstate=s->rstate;
2343 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2346 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2348 /* dup the cipher_list and cipher_list_by_id stacks */
2349 if (s->cipher_list != NULL)
2351 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2354 if (s->cipher_list_by_id != NULL)
2355 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2359 /* Dup the client_CA list */
2360 if (s->client_CA != NULL)
2362 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2364 for (i=0; i<sk_X509_NAME_num(sk); i++)
2366 xn=sk_X509_NAME_value(sk,i);
2367 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2378 if (ret != NULL) SSL_free(ret);
2384 void ssl_clear_cipher_ctx(SSL *s)
2386 if (s->enc_read_ctx != NULL)
2388 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2389 OPENSSL_free(s->enc_read_ctx);
2390 s->enc_read_ctx=NULL;
2392 if (s->enc_write_ctx != NULL)
2394 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2395 OPENSSL_free(s->enc_write_ctx);
2396 s->enc_write_ctx=NULL;
2398 #ifndef OPENSSL_NO_COMP
2399 if (s->expand != NULL)
2401 COMP_CTX_free(s->expand);
2404 if (s->compress != NULL)
2406 COMP_CTX_free(s->compress);
2412 /* Fix this function so that it takes an optional type parameter */
2413 X509 *SSL_get_certificate(const SSL *s)
2415 if (s->cert != NULL)
2416 return(s->cert->key->x509);
2421 /* Fix this function so that it takes an optional type parameter */
2422 EVP_PKEY *SSL_get_privatekey(SSL *s)
2424 if (s->cert != NULL)
2425 return(s->cert->key->privatekey);
2430 SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2432 if ((s->session != NULL) && (s->session->cipher != NULL))
2433 return(s->session->cipher);
2436 #ifdef OPENSSL_NO_COMP
2437 const void *SSL_get_current_compression(SSL *s)
2441 const void *SSL_get_current_expansion(SSL *s)
2447 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2449 if (s->compress != NULL)
2450 return(s->compress->meth);
2454 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2456 if (s->expand != NULL)
2457 return(s->expand->meth);
2462 int ssl_init_wbio_buffer(SSL *s,int push)
2466 if (s->bbio == NULL)
2468 bbio=BIO_new(BIO_f_buffer());
2469 if (bbio == NULL) return(0);
2475 if (s->bbio == s->wbio)
2476 s->wbio=BIO_pop(s->wbio);
2478 (void)BIO_reset(bbio);
2479 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2480 if (!BIO_set_read_buffer_size(bbio,1))
2482 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2487 if (s->wbio != bbio)
2488 s->wbio=BIO_push(bbio,s->wbio);
2492 if (s->wbio == bbio)
2493 s->wbio=BIO_pop(bbio);
2498 void ssl_free_wbio_buffer(SSL *s)
2500 if (s->bbio == NULL) return;
2502 if (s->bbio == s->wbio)
2504 /* remove buffering */
2505 s->wbio=BIO_pop(s->wbio);
2506 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2507 assert(s->wbio != NULL);
2514 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2516 ctx->quiet_shutdown=mode;
2519 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2521 return(ctx->quiet_shutdown);
2524 void SSL_set_quiet_shutdown(SSL *s,int mode)
2526 s->quiet_shutdown=mode;
2529 int SSL_get_quiet_shutdown(const SSL *s)
2531 return(s->quiet_shutdown);
2534 void SSL_set_shutdown(SSL *s,int mode)
2539 int SSL_get_shutdown(const SSL *s)
2541 return(s->shutdown);
2544 int SSL_version(const SSL *s)
2549 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2554 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2556 if (ssl->ctx == ctx)
2559 ctx = ssl->initial_ctx;
2560 if (ssl->cert != NULL)
2561 ssl_cert_free(ssl->cert);
2562 ssl->cert = ssl_cert_dup(ctx->cert);
2563 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2564 if (ssl->ctx != NULL)
2565 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2570 #ifndef OPENSSL_NO_STDIO
2571 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2573 return(X509_STORE_set_default_paths(ctx->cert_store));
2576 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2579 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2583 void SSL_set_info_callback(SSL *ssl,
2584 void (*cb)(const SSL *ssl,int type,int val))
2586 ssl->info_callback=cb;
2589 /* One compiler (Diab DCC) doesn't like argument names in returned
2590 function pointer. */
2591 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2593 return ssl->info_callback;
2596 int SSL_state(const SSL *ssl)
2601 void SSL_set_verify_result(SSL *ssl,long arg)
2603 ssl->verify_result=arg;
2606 long SSL_get_verify_result(const SSL *ssl)
2608 return(ssl->verify_result);
2611 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2612 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2614 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2615 new_func, dup_func, free_func);
2618 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2620 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2623 void *SSL_get_ex_data(const SSL *s,int idx)
2625 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2628 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2629 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2631 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2632 new_func, dup_func, free_func);
2635 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2637 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2640 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
2642 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2650 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2652 return(ctx->cert_store);
2655 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2657 if (ctx->cert_store != NULL)
2658 X509_STORE_free(ctx->cert_store);
2659 ctx->cert_store=store;
2662 int SSL_want(const SSL *s)
2668 * \brief Set the callback for generating temporary RSA keys.
2669 * \param ctx the SSL context.
2670 * \param cb the callback
2673 #ifndef OPENSSL_NO_RSA
2674 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2678 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2681 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2685 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2691 * \brief The RSA temporary key callback function.
2692 * \param ssl the SSL session.
2693 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2694 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2695 * of the required key in bits.
2696 * \return the temporary RSA key.
2697 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2700 RSA *cb(SSL *ssl,int is_export,int keylength)
2705 * \brief Set the callback for generating temporary DH keys.
2706 * \param ctx the SSL context.
2707 * \param dh the callback
2710 #ifndef OPENSSL_NO_DH
2711 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2714 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2717 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2720 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2724 #ifndef OPENSSL_NO_ECDH
2725 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2728 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2731 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2734 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2738 #ifndef OPENSSL_NO_PSK
2739 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
2741 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2743 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2746 if (ctx->psk_identity_hint != NULL)
2747 OPENSSL_free(ctx->psk_identity_hint);
2748 if (identity_hint != NULL)
2750 ctx->psk_identity_hint = BUF_strdup(identity_hint);
2751 if (ctx->psk_identity_hint == NULL)
2755 ctx->psk_identity_hint = NULL;
2759 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
2764 if (s->session == NULL)
2765 return 1; /* session not created yet, ignored */
2767 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2769 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2772 if (s->session->psk_identity_hint != NULL)
2773 OPENSSL_free(s->session->psk_identity_hint);
2774 if (identity_hint != NULL)
2776 s->session->psk_identity_hint = BUF_strdup(identity_hint);
2777 if (s->session->psk_identity_hint == NULL)
2781 s->session->psk_identity_hint = NULL;
2785 const char *SSL_get_psk_identity_hint(const SSL *s)
2787 if (s == NULL || s->session == NULL)
2789 return(s->session->psk_identity_hint);
2792 const char *SSL_get_psk_identity(const SSL *s)
2794 if (s == NULL || s->session == NULL)
2796 return(s->session->psk_identity);
2799 void SSL_set_psk_client_callback(SSL *s,
2800 unsigned int (*cb)(SSL *ssl, const char *hint,
2801 char *identity, unsigned int max_identity_len, unsigned char *psk,
2802 unsigned int max_psk_len))
2804 s->psk_client_callback = cb;
2807 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
2808 unsigned int (*cb)(SSL *ssl, const char *hint,
2809 char *identity, unsigned int max_identity_len, unsigned char *psk,
2810 unsigned int max_psk_len))
2812 ctx->psk_client_callback = cb;
2815 void SSL_set_psk_server_callback(SSL *s,
2816 unsigned int (*cb)(SSL *ssl, const char *identity,
2817 unsigned char *psk, unsigned int max_psk_len))
2819 s->psk_server_callback = cb;
2822 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
2823 unsigned int (*cb)(SSL *ssl, const char *identity,
2824 unsigned char *psk, unsigned int max_psk_len))
2826 ctx->psk_server_callback = cb;
2830 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))
2832 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2834 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))
2836 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2841 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
2842 #include "../crypto/bio/bss_file.c"
2845 IMPLEMENT_STACK_OF(SSL_CIPHER)
2846 IMPLEMENT_STACK_OF(SSL_COMP)