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
182 int SSL_clear(SSL *s)
185 if (s->method == NULL)
187 SSLerr(SSL_F_SSL_CLEAR,SSL_R_NO_METHOD_SPECIFIED);
191 if (ssl_clear_bad_session(s))
193 SSL_SESSION_free(s->session);
201 #if 0 /* Disabled since version 1.10 of this file (early return not
202 * needed because SSL_clear is not called when doing renegotiation) */
203 /* This is set if we are doing dynamic renegotiation so keep
204 * the old cipher. It is sort of a SSL_clear_lite :-) */
205 if (s->new_session) return(1);
209 SSLerr(SSL_F_SSL_CLEAR,ERR_R_INTERNAL_ERROR);
216 s->state=SSL_ST_BEFORE|((s->server)?SSL_ST_ACCEPT:SSL_ST_CONNECT);
218 s->version=s->method->version;
219 s->client_version=s->version;
220 s->rwstate=SSL_NOTHING;
221 s->rstate=SSL_ST_READ_HEADER;
223 s->read_ahead=s->ctx->read_ahead;
226 if (s->init_buf != NULL)
228 BUF_MEM_free(s->init_buf);
232 ssl_clear_cipher_ctx(s);
233 ssl_clear_hash_ctx(&s->read_hash);
234 ssl_clear_hash_ctx(&s->write_hash);
239 /* Check to see if we were changed into a different method, if
240 * so, revert back if we are not doing session-id reuse. */
241 if (!s->in_handshake && (s->session == NULL) && (s->method != s->ctx->method))
243 s->method->ssl_free(s);
244 s->method=s->ctx->method;
245 if (!s->method->ssl_new(s))
250 s->method->ssl_clear(s);
254 /** Used to change an SSL_CTXs default SSL method type */
255 int SSL_CTX_set_ssl_version(SSL_CTX *ctx,const SSL_METHOD *meth)
257 STACK_OF(SSL_CIPHER) *sk;
261 sk=ssl_create_cipher_list(ctx->method,&(ctx->cipher_list),
262 &(ctx->cipher_list_by_id),
263 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
264 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0))
266 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION,SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
272 SSL *SSL_new(SSL_CTX *ctx)
278 SSLerr(SSL_F_SSL_NEW,SSL_R_NULL_SSL_CTX);
281 if (ctx->method == NULL)
283 SSLerr(SSL_F_SSL_NEW,SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
287 s=(SSL *)OPENSSL_malloc(sizeof(SSL));
288 if (s == NULL) goto err;
289 memset(s,0,sizeof(SSL));
291 #ifndef OPENSSL_NO_KRB5
292 s->kssl_ctx = kssl_ctx_new();
293 #endif /* OPENSSL_NO_KRB5 */
295 s->options=ctx->options;
297 s->max_cert_list=ctx->max_cert_list;
299 if (ctx->cert != NULL)
301 /* Earlier library versions used to copy the pointer to
302 * the CERT, not its contents; only when setting new
303 * parameters for the per-SSL copy, ssl_cert_new would be
304 * called (and the direct reference to the per-SSL_CTX
305 * settings would be lost, but those still were indirectly
306 * accessed for various purposes, and for that reason they
307 * used to be known as s->ctx->default_cert).
308 * Now we don't look at the SSL_CTX's CERT after having
309 * duplicated it once. */
311 s->cert = ssl_cert_dup(ctx->cert);
316 s->cert=NULL; /* Cannot really happen (see SSL_CTX_new) */
318 s->read_ahead=ctx->read_ahead;
319 s->msg_callback=ctx->msg_callback;
320 s->msg_callback_arg=ctx->msg_callback_arg;
321 s->verify_mode=ctx->verify_mode;
323 s->verify_depth=ctx->verify_depth;
325 s->sid_ctx_length=ctx->sid_ctx_length;
326 OPENSSL_assert(s->sid_ctx_length <= sizeof s->sid_ctx);
327 memcpy(&s->sid_ctx,&ctx->sid_ctx,sizeof(s->sid_ctx));
328 s->verify_callback=ctx->default_verify_callback;
329 s->generate_session_id=ctx->generate_session_id;
331 s->param = X509_VERIFY_PARAM_new();
334 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
336 s->purpose = ctx->purpose;
337 s->trust = ctx->trust;
339 s->quiet_shutdown=ctx->quiet_shutdown;
340 s->max_send_fragment = ctx->max_send_fragment;
342 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
344 #ifndef OPENSSL_NO_TLSEXT
345 s->tlsext_debug_cb = 0;
346 s->tlsext_debug_arg = NULL;
347 s->tlsext_ticket_expected = 0;
348 s->tlsext_status_type = -1;
349 s->tlsext_status_expected = 0;
350 s->tlsext_ocsp_ids = NULL;
351 s->tlsext_ocsp_exts = NULL;
352 s->tlsext_ocsp_resp = NULL;
353 s->tlsext_ocsp_resplen = -1;
354 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
358 s->verify_result=X509_V_OK;
360 s->method=ctx->method;
362 if (!s->method->ssl_new(s))
366 s->server=(ctx->method->ssl_accept == ssl_undefined_function)?0:1;
370 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
372 #ifndef OPENSSL_NO_PSK
373 s->psk_client_callback=ctx->psk_client_callback;
374 s->psk_server_callback=ctx->psk_server_callback;
382 ssl_cert_free(s->cert);
384 SSL_CTX_free(s->ctx); /* decrement reference count */
387 SSLerr(SSL_F_SSL_NEW,ERR_R_MALLOC_FAILURE);
391 int SSL_CTX_set_session_id_context(SSL_CTX *ctx,const unsigned char *sid_ctx,
392 unsigned int sid_ctx_len)
394 if(sid_ctx_len > sizeof ctx->sid_ctx)
396 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
399 ctx->sid_ctx_length=sid_ctx_len;
400 memcpy(ctx->sid_ctx,sid_ctx,sid_ctx_len);
405 int SSL_set_session_id_context(SSL *ssl,const unsigned char *sid_ctx,
406 unsigned int sid_ctx_len)
408 if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
410 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
413 ssl->sid_ctx_length=sid_ctx_len;
414 memcpy(ssl->sid_ctx,sid_ctx,sid_ctx_len);
419 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
421 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
422 ctx->generate_session_id = cb;
423 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
427 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
429 CRYPTO_w_lock(CRYPTO_LOCK_SSL);
430 ssl->generate_session_id = cb;
431 CRYPTO_w_unlock(CRYPTO_LOCK_SSL);
435 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
438 /* A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
439 * we can "construct" a session to give us the desired check - ie. to
440 * find if there's a session in the hash table that would conflict with
441 * any new session built out of this id/id_len and the ssl_version in
442 * use by this SSL. */
445 if(id_len > sizeof r.session_id)
448 r.ssl_version = ssl->version;
449 r.session_id_length = id_len;
450 memcpy(r.session_id, id, id_len);
451 /* NB: SSLv2 always uses a fixed 16-byte session ID, so even if a
452 * callback is calling us to check the uniqueness of a shorter ID, it
453 * must be compared as a padded-out ID because that is what it will be
454 * converted to when the callback has finished choosing it. */
455 if((r.ssl_version == SSL2_VERSION) &&
456 (id_len < SSL2_SSL_SESSION_ID_LENGTH))
458 memset(r.session_id + id_len, 0,
459 SSL2_SSL_SESSION_ID_LENGTH - id_len);
460 r.session_id_length = SSL2_SSL_SESSION_ID_LENGTH;
463 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
464 p = lh_SSL_SESSION_retrieve(ssl->ctx->sessions, &r);
465 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
469 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
471 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
474 int SSL_set_purpose(SSL *s, int purpose)
476 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
479 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
481 return X509_VERIFY_PARAM_set_trust(s->param, trust);
484 int SSL_set_trust(SSL *s, int trust)
486 return X509_VERIFY_PARAM_set_trust(s->param, trust);
489 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
491 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
494 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
496 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
499 void SSL_free(SSL *s)
506 i=CRYPTO_add(&s->references,-1,CRYPTO_LOCK_SSL);
514 fprintf(stderr,"SSL_free, bad reference count\n");
520 X509_VERIFY_PARAM_free(s->param);
522 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
526 /* If the buffering BIO is in place, pop it off */
527 if (s->bbio == s->wbio)
529 s->wbio=BIO_pop(s->wbio);
535 BIO_free_all(s->rbio);
536 if ((s->wbio != NULL) && (s->wbio != s->rbio))
537 BIO_free_all(s->wbio);
539 if (s->init_buf != NULL) BUF_MEM_free(s->init_buf);
541 /* add extra stuff */
542 if (s->cipher_list != NULL) sk_SSL_CIPHER_free(s->cipher_list);
543 if (s->cipher_list_by_id != NULL) sk_SSL_CIPHER_free(s->cipher_list_by_id);
545 /* Make the next call work :-) */
546 if (s->session != NULL)
548 ssl_clear_bad_session(s);
549 SSL_SESSION_free(s->session);
552 ssl_clear_cipher_ctx(s);
553 ssl_clear_hash_ctx(&s->read_hash);
554 ssl_clear_hash_ctx(&s->write_hash);
556 if (s->cert != NULL) ssl_cert_free(s->cert);
557 /* Free up if allocated */
559 if (s->ctx) SSL_CTX_free(s->ctx);
560 #ifndef OPENSSL_NO_TLSEXT
561 if (s->tlsext_hostname)
562 OPENSSL_free(s->tlsext_hostname);
563 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
564 #ifndef OPENSSL_NO_EC
565 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
566 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
567 #endif /* OPENSSL_NO_EC */
568 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input);
569 if (s->tlsext_ocsp_exts)
570 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
571 X509_EXTENSION_free);
572 if (s->tlsext_ocsp_ids)
573 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
574 if (s->tlsext_ocsp_resp)
575 OPENSSL_free(s->tlsext_ocsp_resp);
578 if (s->client_CA != NULL)
579 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
581 if (s->method != NULL) s->method->ssl_free(s);
583 #ifndef OPENSSL_NO_KRB5
584 if (s->kssl_ctx != NULL)
585 kssl_ctx_free(s->kssl_ctx);
586 #endif /* OPENSSL_NO_KRB5 */
591 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
593 /* If the output buffering BIO is still in place, remove it
597 if (s->wbio == s->bbio)
599 s->wbio=s->wbio->next_bio;
600 s->bbio->next_bio=NULL;
603 if ((s->rbio != NULL) && (s->rbio != rbio))
604 BIO_free_all(s->rbio);
605 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
606 BIO_free_all(s->wbio);
611 BIO *SSL_get_rbio(const SSL *s)
614 BIO *SSL_get_wbio(const SSL *s)
617 int SSL_get_fd(const SSL *s)
619 return(SSL_get_rfd(s));
622 int SSL_get_rfd(const SSL *s)
628 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
634 int SSL_get_wfd(const SSL *s)
640 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
646 #ifndef OPENSSL_NO_SOCK
647 int SSL_set_fd(SSL *s,int fd)
652 bio=BIO_new(BIO_s_socket());
656 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
659 BIO_set_fd(bio,fd,BIO_NOCLOSE);
660 SSL_set_bio(s,bio,bio);
666 int SSL_set_wfd(SSL *s,int fd)
671 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
672 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
674 bio=BIO_new(BIO_s_socket());
677 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
678 BIO_set_fd(bio,fd,BIO_NOCLOSE);
679 SSL_set_bio(s,SSL_get_rbio(s),bio);
682 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
688 int SSL_set_rfd(SSL *s,int fd)
693 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
694 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
696 bio=BIO_new(BIO_s_socket());
700 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
703 BIO_set_fd(bio,fd,BIO_NOCLOSE);
704 SSL_set_bio(s,bio,SSL_get_wbio(s));
707 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
715 /* return length of latest Finished message we sent, copy to 'buf' */
716 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
722 ret = s->s3->tmp.finish_md_len;
725 memcpy(buf, s->s3->tmp.finish_md, count);
730 /* return length of latest Finished message we expected, copy to 'buf' */
731 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
737 ret = s->s3->tmp.peer_finish_md_len;
740 memcpy(buf, s->s3->tmp.peer_finish_md, count);
746 int SSL_get_verify_mode(const SSL *s)
748 return(s->verify_mode);
751 int SSL_get_verify_depth(const SSL *s)
753 return X509_VERIFY_PARAM_get_depth(s->param);
756 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
758 return(s->verify_callback);
761 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
763 return(ctx->verify_mode);
766 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
768 return X509_VERIFY_PARAM_get_depth(ctx->param);
771 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
773 return(ctx->default_verify_callback);
776 void SSL_set_verify(SSL *s,int mode,
777 int (*callback)(int ok,X509_STORE_CTX *ctx))
780 if (callback != NULL)
781 s->verify_callback=callback;
784 void SSL_set_verify_depth(SSL *s,int depth)
786 X509_VERIFY_PARAM_set_depth(s->param, depth);
789 void SSL_set_read_ahead(SSL *s,int yes)
794 int SSL_get_read_ahead(const SSL *s)
796 return(s->read_ahead);
799 int SSL_pending(const SSL *s)
801 /* SSL_pending cannot work properly if read-ahead is enabled
802 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
803 * and it is impossible to fix since SSL_pending cannot report
804 * errors that may be observed while scanning the new data.
805 * (Note that SSL_pending() is often used as a boolean value,
806 * so we'd better not return -1.)
808 return(s->method->ssl_pending(s));
811 X509 *SSL_get_peer_certificate(const SSL *s)
815 if ((s == NULL) || (s->session == NULL))
820 if (r == NULL) return(r);
822 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
827 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
831 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
834 r=s->session->sess_cert->cert_chain;
836 /* If we are a client, cert_chain includes the peer's own
837 * certificate; if we are a server, it does not. */
842 /* Now in theory, since the calling process own 't' it should be safe to
843 * modify. We need to be able to read f without being hassled */
844 void SSL_copy_session_id(SSL *t,const SSL *f)
848 /* Do we need to to SSL locking? */
849 SSL_set_session(t,SSL_get_session(f));
851 /* what if we are setup as SSLv2 but want to talk SSLv3 or
853 if (t->method != f->method)
855 t->method->ssl_free(t); /* cleanup current */
856 t->method=f->method; /* change method */
857 t->method->ssl_new(t); /* setup new */
863 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
868 if (tmp != NULL) ssl_cert_free(tmp);
869 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
872 /* Fix this so it checks all the valid key/cert options */
873 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
875 if ( (ctx == NULL) ||
876 (ctx->cert == NULL) ||
877 (ctx->cert->key->x509 == NULL))
879 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
882 if (ctx->cert->key->privatekey == NULL)
884 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
887 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
890 /* Fix this function so that it takes an optional type parameter */
891 int SSL_check_private_key(const SSL *ssl)
895 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
898 if (ssl->cert == NULL)
900 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
903 if (ssl->cert->key->x509 == NULL)
905 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
908 if (ssl->cert->key->privatekey == NULL)
910 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
913 return(X509_check_private_key(ssl->cert->key->x509,
914 ssl->cert->key->privatekey));
917 int SSL_accept(SSL *s)
919 if (s->handshake_func == 0)
920 /* Not properly initialized yet */
921 SSL_set_accept_state(s);
923 return(s->method->ssl_accept(s));
926 int SSL_connect(SSL *s)
928 if (s->handshake_func == 0)
929 /* Not properly initialized yet */
930 SSL_set_connect_state(s);
932 return(s->method->ssl_connect(s));
935 long SSL_get_default_timeout(const SSL *s)
937 return(s->method->get_timeout());
940 int SSL_read(SSL *s,void *buf,int num)
942 if (s->handshake_func == 0)
944 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
948 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
950 s->rwstate=SSL_NOTHING;
953 return(s->method->ssl_read(s,buf,num));
956 int SSL_peek(SSL *s,void *buf,int num)
958 if (s->handshake_func == 0)
960 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
964 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
968 return(s->method->ssl_peek(s,buf,num));
971 int SSL_write(SSL *s,const void *buf,int num)
973 if (s->handshake_func == 0)
975 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
979 if (s->shutdown & SSL_SENT_SHUTDOWN)
981 s->rwstate=SSL_NOTHING;
982 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
985 return(s->method->ssl_write(s,buf,num));
988 int SSL_shutdown(SSL *s)
990 /* Note that this function behaves differently from what one might
991 * expect. Return values are 0 for no success (yet),
992 * 1 for success; but calling it once is usually not enough,
993 * even if blocking I/O is used (see ssl3_shutdown).
996 if (s->handshake_func == 0)
998 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1002 if ((s != NULL) && !SSL_in_init(s))
1003 return(s->method->ssl_shutdown(s));
1008 int SSL_renegotiate(SSL *s)
1010 if (s->new_session == 0)
1014 return(s->method->ssl_renegotiate(s));
1017 int SSL_renegotiate_pending(SSL *s)
1019 /* becomes true when negotiation is requested;
1020 * false again once a handshake has finished */
1021 return (s->new_session != 0);
1024 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1030 case SSL_CTRL_GET_READ_AHEAD:
1031 return(s->read_ahead);
1032 case SSL_CTRL_SET_READ_AHEAD:
1037 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1038 s->msg_callback_arg = parg;
1041 case SSL_CTRL_OPTIONS:
1042 return(s->options|=larg);
1044 return(s->mode|=larg);
1045 case SSL_CTRL_GET_MAX_CERT_LIST:
1046 return(s->max_cert_list);
1047 case SSL_CTRL_SET_MAX_CERT_LIST:
1049 s->max_cert_list=larg;
1051 case SSL_CTRL_SET_MTU:
1052 if (SSL_version(s) == DTLS1_VERSION ||
1053 SSL_version(s) == DTLS1_BAD_VER)
1059 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1060 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1062 s->max_send_fragment = larg;
1065 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1069 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1073 case SSL_CTRL_SET_MSG_CALLBACK:
1074 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1078 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1082 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1084 return ctx->sessions;
1087 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1093 case SSL_CTRL_GET_READ_AHEAD:
1094 return(ctx->read_ahead);
1095 case SSL_CTRL_SET_READ_AHEAD:
1097 ctx->read_ahead=larg;
1100 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1101 ctx->msg_callback_arg = parg;
1104 case SSL_CTRL_GET_MAX_CERT_LIST:
1105 return(ctx->max_cert_list);
1106 case SSL_CTRL_SET_MAX_CERT_LIST:
1107 l=ctx->max_cert_list;
1108 ctx->max_cert_list=larg;
1111 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1112 l=ctx->session_cache_size;
1113 ctx->session_cache_size=larg;
1115 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1116 return(ctx->session_cache_size);
1117 case SSL_CTRL_SET_SESS_CACHE_MODE:
1118 l=ctx->session_cache_mode;
1119 ctx->session_cache_mode=larg;
1121 case SSL_CTRL_GET_SESS_CACHE_MODE:
1122 return(ctx->session_cache_mode);
1124 case SSL_CTRL_SESS_NUMBER:
1125 return(lh_SSL_SESSION_num_items(ctx->sessions));
1126 case SSL_CTRL_SESS_CONNECT:
1127 return(ctx->stats.sess_connect);
1128 case SSL_CTRL_SESS_CONNECT_GOOD:
1129 return(ctx->stats.sess_connect_good);
1130 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1131 return(ctx->stats.sess_connect_renegotiate);
1132 case SSL_CTRL_SESS_ACCEPT:
1133 return(ctx->stats.sess_accept);
1134 case SSL_CTRL_SESS_ACCEPT_GOOD:
1135 return(ctx->stats.sess_accept_good);
1136 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1137 return(ctx->stats.sess_accept_renegotiate);
1138 case SSL_CTRL_SESS_HIT:
1139 return(ctx->stats.sess_hit);
1140 case SSL_CTRL_SESS_CB_HIT:
1141 return(ctx->stats.sess_cb_hit);
1142 case SSL_CTRL_SESS_MISSES:
1143 return(ctx->stats.sess_miss);
1144 case SSL_CTRL_SESS_TIMEOUTS:
1145 return(ctx->stats.sess_timeout);
1146 case SSL_CTRL_SESS_CACHE_FULL:
1147 return(ctx->stats.sess_cache_full);
1148 case SSL_CTRL_OPTIONS:
1149 return(ctx->options|=larg);
1151 return(ctx->mode|=larg);
1152 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1153 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1155 ctx->max_send_fragment = larg;
1158 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1162 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1166 case SSL_CTRL_SET_MSG_CALLBACK:
1167 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1171 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1175 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1183 return((l > 0)?1:-1);
1186 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1187 const SSL_CIPHER * const *bp)
1191 l=(*ap)->id-(*bp)->id;
1195 return((l > 0)?1:-1);
1198 /** return a STACK of the ciphers available for the SSL and in order of
1200 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1204 if (s->cipher_list != NULL)
1206 return(s->cipher_list);
1208 else if ((s->ctx != NULL) &&
1209 (s->ctx->cipher_list != NULL))
1211 return(s->ctx->cipher_list);
1217 /** return a STACK of the ciphers available for the SSL and in order of
1219 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1223 if (s->cipher_list_by_id != NULL)
1225 return(s->cipher_list_by_id);
1227 else if ((s->ctx != NULL) &&
1228 (s->ctx->cipher_list_by_id != NULL))
1230 return(s->ctx->cipher_list_by_id);
1236 /** The old interface to get the same thing as SSL_get_ciphers() */
1237 const char *SSL_get_cipher_list(const SSL *s,int n)
1240 STACK_OF(SSL_CIPHER) *sk;
1242 if (s == NULL) return(NULL);
1243 sk=SSL_get_ciphers(s);
1244 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1246 c=sk_SSL_CIPHER_value(sk,n);
1247 if (c == NULL) return(NULL);
1251 /** specify the ciphers to be used by default by the SSL_CTX */
1252 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1254 STACK_OF(SSL_CIPHER) *sk;
1256 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1257 &ctx->cipher_list_by_id,str);
1258 /* ssl_create_cipher_list may return an empty stack if it
1259 * was unable to find a cipher matching the given rule string
1260 * (for example if the rule string specifies a cipher which
1261 * has been disabled). This is not an error as far as
1262 * ssl_create_cipher_list is concerned, and hence
1263 * ctx->cipher_list and ctx->cipher_list_by_id has been
1267 else if (sk_SSL_CIPHER_num(sk) == 0)
1269 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1275 /** specify the ciphers to be used by the SSL */
1276 int SSL_set_cipher_list(SSL *s,const char *str)
1278 STACK_OF(SSL_CIPHER) *sk;
1280 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1281 &s->cipher_list_by_id,str);
1282 /* see comment in SSL_CTX_set_cipher_list */
1285 else if (sk_SSL_CIPHER_num(sk) == 0)
1287 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1293 /* works well for SSLv2, not so good for SSLv3 */
1294 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1297 STACK_OF(SSL_CIPHER) *sk;
1301 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1306 sk=s->session->ciphers;
1307 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1311 c=sk_SSL_CIPHER_value(sk,i);
1329 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1330 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1335 #ifndef OPENSSL_NO_KRB5
1336 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1337 #endif /* OPENSSL_NO_KRB5 */
1339 if (sk == NULL) return(0);
1342 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1344 c=sk_SSL_CIPHER_value(sk,i);
1345 #ifndef OPENSSL_NO_KRB5
1346 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) &&
1349 #endif /* OPENSSL_NO_KRB5 */
1350 #ifndef OPENSSL_NO_PSK
1351 /* with PSK there must be client callback set */
1352 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) &&
1353 s->psk_client_callback == NULL)
1355 #endif /* OPENSSL_NO_PSK */
1356 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1362 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1363 STACK_OF(SSL_CIPHER) **skp)
1365 const SSL_CIPHER *c;
1366 STACK_OF(SSL_CIPHER) *sk;
1369 n=ssl_put_cipher_by_char(s,NULL,NULL);
1372 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1375 if ((skp == NULL) || (*skp == NULL))
1376 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1380 sk_SSL_CIPHER_zero(sk);
1383 for (i=0; i<num; i+=n)
1385 c=ssl_get_cipher_by_char(s,p);
1389 if (!sk_SSL_CIPHER_push(sk,c))
1391 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1401 if ((skp == NULL) || (*skp == NULL))
1402 sk_SSL_CIPHER_free(sk);
1407 #ifndef OPENSSL_NO_TLSEXT
1408 /** return a servername extension value if provided in Client Hello, or NULL.
1409 * So far, only host_name types are defined (RFC 3546).
1412 const char *SSL_get_servername(const SSL *s, const int type)
1414 if (type != TLSEXT_NAMETYPE_host_name)
1417 return s->session && !s->tlsext_hostname ?
1418 s->session->tlsext_hostname :
1422 int SSL_get_servername_type(const SSL *s)
1424 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1425 return TLSEXT_NAMETYPE_host_name;
1430 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1435 ((unsigned int) a->session_id[0] )|
1436 ((unsigned int) a->session_id[1]<< 8L)|
1437 ((unsigned long)a->session_id[2]<<16L)|
1438 ((unsigned long)a->session_id[3]<<24L);
1442 /* NB: If this function (or indeed the hash function which uses a sort of
1443 * coarser function than this one) is changed, ensure
1444 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1445 * able to construct an SSL_SESSION that will collide with any existing session
1446 * with a matching session ID. */
1447 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1449 if (a->ssl_version != b->ssl_version)
1451 if (a->session_id_length != b->session_id_length)
1453 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1456 /* These wrapper functions should remain rather than redeclaring
1457 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1458 * variable. The reason is that the functions aren't static, they're exposed via
1460 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1461 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1463 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1469 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1473 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1475 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1478 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1482 memset(ret,0,sizeof(SSL_CTX));
1486 ret->cert_store=NULL;
1487 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1488 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1489 ret->session_cache_head=NULL;
1490 ret->session_cache_tail=NULL;
1492 /* We take the system default */
1493 ret->session_timeout=meth->get_timeout();
1495 ret->new_session_cb=0;
1496 ret->remove_session_cb=0;
1497 ret->get_session_cb=0;
1498 ret->generate_session_id=0;
1500 memset((char *)&ret->stats,0,sizeof(ret->stats));
1503 ret->quiet_shutdown=0;
1505 /* ret->cipher=NULL;*/
1506 /* ret->s2->challenge=NULL;
1507 ret->master_key=NULL;
1509 ret->s2->conn_id=NULL; */
1511 ret->info_callback=NULL;
1513 ret->app_verify_callback=0;
1514 ret->app_verify_arg=NULL;
1516 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1518 ret->msg_callback=0;
1519 ret->msg_callback_arg=NULL;
1520 ret->verify_mode=SSL_VERIFY_NONE;
1522 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1524 ret->sid_ctx_length=0;
1525 ret->default_verify_callback=NULL;
1526 if ((ret->cert=ssl_cert_new()) == NULL)
1529 ret->default_passwd_callback=0;
1530 ret->default_passwd_callback_userdata=NULL;
1531 ret->client_cert_cb=0;
1532 ret->app_gen_cookie_cb=0;
1533 ret->app_verify_cookie_cb=0;
1535 ret->sessions=lh_SSL_SESSION_new();
1536 if (ret->sessions == NULL) goto err;
1537 ret->cert_store=X509_STORE_new();
1538 if (ret->cert_store == NULL) goto err;
1540 ssl_create_cipher_list(ret->method,
1541 &ret->cipher_list,&ret->cipher_list_by_id,
1542 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1543 if (ret->cipher_list == NULL
1544 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1546 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1550 ret->param = X509_VERIFY_PARAM_new();
1554 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1556 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1559 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1561 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1564 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1566 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1570 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1573 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1575 ret->extra_certs=NULL;
1576 ret->comp_methods=SSL_COMP_get_compression_methods();
1578 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1580 #ifndef OPENSSL_NO_TLSEXT
1581 ret->tlsext_servername_callback = 0;
1582 ret->tlsext_servername_arg = NULL;
1583 /* Setup RFC4507 ticket keys */
1584 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1585 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1586 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1587 ret->options |= SSL_OP_NO_TICKET;
1589 ret->tlsext_status_cb = 0;
1590 ret->tlsext_status_arg = NULL;
1593 #ifndef OPENSSL_NO_PSK
1594 ret->psk_identity_hint=NULL;
1595 ret->psk_client_callback=NULL;
1596 ret->psk_server_callback=NULL;
1598 #ifndef OPENSSL_NO_BUF_FREELISTS
1599 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1600 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1601 if (!ret->rbuf_freelist)
1603 ret->rbuf_freelist->chunklen = 0;
1604 ret->rbuf_freelist->len = 0;
1605 ret->rbuf_freelist->head = NULL;
1606 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1607 if (!ret->wbuf_freelist)
1609 OPENSSL_free(ret->rbuf_freelist);
1612 ret->wbuf_freelist->chunklen = 0;
1613 ret->wbuf_freelist->len = 0;
1614 ret->wbuf_freelist->head = NULL;
1616 #ifndef OPENSSL_NO_ENGINE
1617 ret->client_cert_engine = NULL;
1618 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1619 #define eng_strx(x) #x
1620 #define eng_str(x) eng_strx(x)
1621 /* Use specific client engine automatically... ignore errors */
1624 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1628 ENGINE_load_builtin_engines();
1629 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1631 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1639 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1641 if (ret != NULL) SSL_CTX_free(ret);
1646 static void SSL_COMP_free(SSL_COMP *comp)
1647 { OPENSSL_free(comp); }
1650 #ifndef OPENSSL_NO_BUF_FREELISTS
1652 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1654 SSL3_BUF_FREELIST_ENTRY *ent, *next;
1655 for (ent = list->head; ent; ent = next)
1664 void SSL_CTX_free(SSL_CTX *a)
1668 if (a == NULL) return;
1670 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1672 REF_PRINT("SSL_CTX",a);
1678 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1684 X509_VERIFY_PARAM_free(a->param);
1687 * Free internal session cache. However: the remove_cb() may reference
1688 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1689 * after the sessions were flushed.
1690 * As the ex_data handling routines might also touch the session cache,
1691 * the most secure solution seems to be: empty (flush) the cache, then
1692 * free ex_data, then finally free the cache.
1693 * (See ticket [openssl.org #212].)
1695 if (a->sessions != NULL)
1696 SSL_CTX_flush_sessions(a,0);
1698 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1700 if (a->sessions != NULL)
1701 lh_SSL_SESSION_free(a->sessions);
1703 if (a->cert_store != NULL)
1704 X509_STORE_free(a->cert_store);
1705 if (a->cipher_list != NULL)
1706 sk_SSL_CIPHER_free(a->cipher_list);
1707 if (a->cipher_list_by_id != NULL)
1708 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1709 if (a->cert != NULL)
1710 ssl_cert_free(a->cert);
1711 if (a->client_CA != NULL)
1712 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1713 if (a->extra_certs != NULL)
1714 sk_X509_pop_free(a->extra_certs,X509_free);
1715 #if 0 /* This should never be done, since it removes a global database */
1716 if (a->comp_methods != NULL)
1717 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1719 a->comp_methods = NULL;
1722 #ifndef OPENSSL_NO_PSK
1723 if (a->psk_identity_hint)
1724 OPENSSL_free(a->psk_identity_hint);
1726 #ifndef OPENSSL_NO_ENGINE
1727 if (a->client_cert_engine)
1728 ENGINE_finish(a->client_cert_engine);
1731 #ifndef OPENSSL_NO_BUF_FREELISTS
1732 if (a->wbuf_freelist)
1733 ssl_buf_freelist_free(a->wbuf_freelist);
1734 if (a->rbuf_freelist)
1735 ssl_buf_freelist_free(a->rbuf_freelist);
1741 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1743 ctx->default_passwd_callback=cb;
1746 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1748 ctx->default_passwd_callback_userdata=u;
1751 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1753 ctx->app_verify_callback=cb;
1754 ctx->app_verify_arg=arg;
1757 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1759 ctx->verify_mode=mode;
1760 ctx->default_verify_callback=cb;
1763 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1765 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1768 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
1771 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1772 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1773 int rsa_tmp_export,dh_tmp_export,kl;
1774 unsigned long mask_k,mask_a,emask_k,emask_a;
1775 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
1776 #ifndef OPENSSL_NO_ECDH
1780 EVP_PKEY *ecc_pkey = NULL;
1781 int signature_nid = 0;
1783 if (c == NULL) return;
1785 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1787 #ifndef OPENSSL_NO_RSA
1788 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1789 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1790 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1792 rsa_tmp=rsa_tmp_export=0;
1794 #ifndef OPENSSL_NO_DH
1795 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1796 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1797 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1799 dh_tmp=dh_tmp_export=0;
1802 #ifndef OPENSSL_NO_ECDH
1803 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
1805 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1806 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1807 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1808 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1809 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1810 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1811 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1812 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1813 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1814 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1815 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1816 /* FIX THIS EAY EAY EAY */
1817 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1818 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1819 cpk= &(c->pkeys[SSL_PKEY_ECC]);
1820 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
1829 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1830 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
1831 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1834 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
1835 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
1836 mask_k |= SSL_kGOST;
1837 mask_a |= SSL_aGOST01;
1839 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
1840 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
1841 mask_k |= SSL_kGOST;
1842 mask_a |= SSL_aGOST94;
1845 if (rsa_enc || (rsa_tmp && rsa_sign))
1847 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1851 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1852 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1853 (rsa_enc || rsa_sign || dsa_sign))
1855 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1856 (rsa_enc || rsa_sign || dsa_sign))
1866 if (dh_rsa) mask_k|=SSL_kDHr;
1867 if (dh_rsa_export) emask_k|=SSL_kDHr;
1869 if (dh_dsa) mask_k|=SSL_kDHd;
1870 if (dh_dsa_export) emask_k|=SSL_kDHd;
1872 if (rsa_enc || rsa_sign)
1887 #ifndef OPENSSL_NO_KRB5
1894 /* An ECC certificate may be usable for ECDH and/or
1895 * ECDSA cipher suites depending on the key usage extension.
1899 /* This call populates extension flags (ex_flags) */
1900 x = (c->pkeys[SSL_PKEY_ECC]).x509;
1901 X509_check_purpose(x, -1, 0);
1902 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1903 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
1904 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1905 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
1906 ecc_pkey = X509_get_pubkey(x);
1907 ecc_pkey_size = (ecc_pkey != NULL) ?
1908 EVP_PKEY_bits(ecc_pkey) : 0;
1909 EVP_PKEY_free(ecc_pkey);
1910 if ((x->sig_alg) && (x->sig_alg->algorithm))
1911 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1912 #ifndef OPENSSL_NO_ECDH
1915 const char *sig = OBJ_nid2ln(signature_nid);
1922 if (strstr(sig, "WithRSA"))
1926 if (ecc_pkey_size <= 163)
1928 emask_k|=SSL_kECDHr;
1933 if (signature_nid == NID_ecdsa_with_SHA1)
1937 if (ecc_pkey_size <= 163)
1939 emask_k|=SSL_kECDHe;
1945 #ifndef OPENSSL_NO_ECDSA
1949 emask_a|=SSL_aECDSA;
1954 #ifndef OPENSSL_NO_ECDH
1958 emask_k|=SSL_kEECDH;
1962 #ifndef OPENSSL_NO_PSK
1965 emask_k |= SSL_kPSK;
1966 emask_a |= SSL_aPSK;
1971 c->export_mask_k=emask_k;
1972 c->export_mask_a=emask_a;
1976 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
1977 #define ku_reject(x, usage) \
1978 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
1980 #ifndef OPENSSL_NO_EC
1982 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, const SSL_CIPHER *cs)
1984 unsigned long alg_k, alg_a;
1985 EVP_PKEY *pkey = NULL;
1987 int signature_nid = 0;
1989 alg_k = cs->algorithm_mkey;
1990 alg_a = cs->algorithm_auth;
1992 if (SSL_C_IS_EXPORT(cs))
1994 /* ECDH key length in export ciphers must be <= 163 bits */
1995 pkey = X509_get_pubkey(x);
1996 if (pkey == NULL) return 0;
1997 keysize = EVP_PKEY_bits(pkey);
1998 EVP_PKEY_free(pkey);
1999 if (keysize > 163) return 0;
2002 /* This call populates the ex_flags field correctly */
2003 X509_check_purpose(x, -1, 0);
2004 if ((x->sig_alg) && (x->sig_alg->algorithm))
2005 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2006 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2008 /* key usage, if present, must allow key agreement */
2009 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2011 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2014 if (alg_k & SSL_kECDHe)
2016 /* signature alg must be ECDSA */
2017 if (signature_nid != NID_ecdsa_with_SHA1)
2019 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2023 if (alg_k & SSL_kECDHr)
2025 /* signature alg must be RSA */
2027 const char *sig = OBJ_nid2ln(signature_nid);
2033 if (strstr(sig, "WithRSA") == NULL)
2035 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2040 if (alg_a & SSL_aECDSA)
2042 /* key usage, if present, must allow signing */
2043 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2045 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2050 return 1; /* all checks are ok */
2055 /* THIS NEEDS CLEANING UP */
2056 X509 *ssl_get_server_send_cert(SSL *s)
2058 unsigned long alg_k,alg_a,mask_k,mask_a;
2063 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2064 is_export=SSL_C_IS_EXPORT(s->s3->tmp.new_cipher);
2067 mask_k = c->export_mask_k;
2068 mask_a = c->export_mask_a;
2076 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2077 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2079 if (alg_k & (SSL_kECDHr|SSL_kECDHe))
2081 /* we don't need to look at SSL_kEECDH
2082 * since no certificate is needed for
2083 * anon ECDH and for authenticated
2084 * EECDH, the check for the auth
2085 * algorithm will set i correctly
2086 * NOTE: For ECDH-RSA, we need an ECC
2087 * not an RSA cert but for EECDH-RSA
2088 * we need an RSA cert. Placing the
2089 * checks for SSL_kECDH before RSA
2090 * checks ensures the correct cert is chosen.
2094 else if (alg_a & SSL_aECDSA)
2098 else if (alg_k & SSL_kDHr)
2100 else if (alg_k & SSL_kDHd)
2102 else if (alg_a & SSL_aDSS)
2103 i=SSL_PKEY_DSA_SIGN;
2104 else if (alg_a & SSL_aRSA)
2106 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2107 i=SSL_PKEY_RSA_SIGN;
2111 else if (alg_a & SSL_aKRB5)
2113 /* VRS something else here? */
2116 else if (alg_a & SSL_aGOST94)
2118 else if (alg_a & SSL_aGOST01)
2120 else /* if (alg_a & SSL_aNULL) */
2122 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
2125 if (c->pkeys[i].x509 == NULL) return(NULL);
2127 return(c->pkeys[i].x509);
2130 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher)
2132 unsigned long alg_a;
2135 alg_a = cipher->algorithm_auth;
2138 if ((alg_a & SSL_aDSS) &&
2139 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2140 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
2141 else if (alg_a & SSL_aRSA)
2143 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2144 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
2145 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2146 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
2150 else if ((alg_a & SSL_aECDSA) &&
2151 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2152 return(c->pkeys[SSL_PKEY_ECC].privatekey);
2153 else /* if (alg_a & SSL_aNULL) */
2155 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2160 void ssl_update_cache(SSL *s,int mode)
2164 /* If the session_id_length is 0, we are not supposed to cache it,
2165 * and it would be rather hard to do anyway :-) */
2166 if (s->session->session_id_length == 0) return;
2168 i=s->session_ctx->session_cache_mode;
2169 if ((i & mode) && (!s->hit)
2170 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2171 || SSL_CTX_add_session(s->session_ctx,s->session))
2172 && (s->session_ctx->new_session_cb != NULL))
2174 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2175 if (!s->session_ctx->new_session_cb(s,s->session))
2176 SSL_SESSION_free(s->session);
2179 /* auto flush every 255 connections */
2180 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2181 ((i & mode) == mode))
2183 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2184 ?s->session_ctx->stats.sess_connect_good
2185 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2187 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2192 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2197 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2202 if (s->method != meth)
2204 if (s->handshake_func != NULL)
2205 conn=(s->handshake_func == s->method->ssl_connect);
2207 if (s->method->version == meth->version)
2211 s->method->ssl_free(s);
2213 ret=s->method->ssl_new(s);
2217 s->handshake_func=meth->ssl_connect;
2219 s->handshake_func=meth->ssl_accept;
2224 int SSL_get_error(const SSL *s,int i)
2230 if (i > 0) return(SSL_ERROR_NONE);
2232 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2233 * etc, where we do encode the error */
2234 if ((l=ERR_peek_error()) != 0)
2236 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2237 return(SSL_ERROR_SYSCALL);
2239 return(SSL_ERROR_SSL);
2242 if ((i < 0) && SSL_want_read(s))
2244 bio=SSL_get_rbio(s);
2245 if (BIO_should_read(bio))
2246 return(SSL_ERROR_WANT_READ);
2247 else if (BIO_should_write(bio))
2248 /* This one doesn't make too much sense ... We never try
2249 * to write to the rbio, and an application program where
2250 * rbio and wbio are separate couldn't even know what it
2252 * However if we ever set s->rwstate incorrectly
2253 * (so that we have SSL_want_read(s) instead of
2254 * SSL_want_write(s)) and rbio and wbio *are* the same,
2255 * this test works around that bug; so it might be safer
2257 return(SSL_ERROR_WANT_WRITE);
2258 else if (BIO_should_io_special(bio))
2260 reason=BIO_get_retry_reason(bio);
2261 if (reason == BIO_RR_CONNECT)
2262 return(SSL_ERROR_WANT_CONNECT);
2263 else if (reason == BIO_RR_ACCEPT)
2264 return(SSL_ERROR_WANT_ACCEPT);
2266 return(SSL_ERROR_SYSCALL); /* unknown */
2270 if ((i < 0) && SSL_want_write(s))
2272 bio=SSL_get_wbio(s);
2273 if (BIO_should_write(bio))
2274 return(SSL_ERROR_WANT_WRITE);
2275 else if (BIO_should_read(bio))
2276 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2277 return(SSL_ERROR_WANT_READ);
2278 else if (BIO_should_io_special(bio))
2280 reason=BIO_get_retry_reason(bio);
2281 if (reason == BIO_RR_CONNECT)
2282 return(SSL_ERROR_WANT_CONNECT);
2283 else if (reason == BIO_RR_ACCEPT)
2284 return(SSL_ERROR_WANT_ACCEPT);
2286 return(SSL_ERROR_SYSCALL);
2289 if ((i < 0) && SSL_want_x509_lookup(s))
2291 return(SSL_ERROR_WANT_X509_LOOKUP);
2296 if (s->version == SSL2_VERSION)
2298 /* assume it is the socket being closed */
2299 return(SSL_ERROR_ZERO_RETURN);
2303 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2304 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2305 return(SSL_ERROR_ZERO_RETURN);
2308 return(SSL_ERROR_SYSCALL);
2311 int SSL_do_handshake(SSL *s)
2315 if (s->handshake_func == NULL)
2317 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2321 s->method->ssl_renegotiate_check(s);
2323 if (SSL_in_init(s) || SSL_in_before(s))
2325 ret=s->handshake_func(s);
2330 /* For the next 2 functions, SSL_clear() sets shutdown and so
2331 * one of these calls will reset it */
2332 void SSL_set_accept_state(SSL *s)
2336 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2337 s->handshake_func=s->method->ssl_accept;
2338 /* clear the current cipher */
2339 ssl_clear_cipher_ctx(s);
2340 ssl_clear_hash_ctx(&s->read_hash);
2341 ssl_clear_hash_ctx(&s->write_hash);
2344 void SSL_set_connect_state(SSL *s)
2348 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2349 s->handshake_func=s->method->ssl_connect;
2350 /* clear the current cipher */
2351 ssl_clear_cipher_ctx(s);
2352 ssl_clear_hash_ctx(&s->read_hash);
2353 ssl_clear_hash_ctx(&s->write_hash);
2356 int ssl_undefined_function(SSL *s)
2358 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2362 int ssl_undefined_void_function(void)
2364 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2368 int ssl_undefined_const_function(const SSL *s)
2370 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2374 SSL_METHOD *ssl_bad_method(int ver)
2376 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2380 const char *SSL_get_version(const SSL *s)
2382 if (s->version == TLS1_VERSION)
2384 else if (s->version == SSL3_VERSION)
2386 else if (s->version == SSL2_VERSION)
2392 SSL *SSL_dup(SSL *s)
2394 STACK_OF(X509_NAME) *sk;
2399 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2402 ret->version = s->version;
2403 ret->type = s->type;
2404 ret->method = s->method;
2406 if (s->session != NULL)
2408 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2409 SSL_copy_session_id(ret,s);
2413 /* No session has been established yet, so we have to expect
2414 * that s->cert or ret->cert will be changed later --
2415 * they should not both point to the same object,
2416 * and thus we can't use SSL_copy_session_id. */
2418 ret->method->ssl_free(ret);
2419 ret->method = s->method;
2420 ret->method->ssl_new(ret);
2422 if (s->cert != NULL)
2424 if (ret->cert != NULL)
2426 ssl_cert_free(ret->cert);
2428 ret->cert = ssl_cert_dup(s->cert);
2429 if (ret->cert == NULL)
2433 SSL_set_session_id_context(ret,
2434 s->sid_ctx, s->sid_ctx_length);
2437 ret->options=s->options;
2439 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2440 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2441 ret->msg_callback = s->msg_callback;
2442 ret->msg_callback_arg = s->msg_callback_arg;
2443 SSL_set_verify(ret,SSL_get_verify_mode(s),
2444 SSL_get_verify_callback(s));
2445 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2446 ret->generate_session_id = s->generate_session_id;
2448 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2450 ret->debug=s->debug;
2452 /* copy app data, a little dangerous perhaps */
2453 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2456 /* setup rbio, and wbio */
2457 if (s->rbio != NULL)
2459 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2462 if (s->wbio != NULL)
2464 if (s->wbio != s->rbio)
2466 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2470 ret->wbio=ret->rbio;
2472 ret->rwstate = s->rwstate;
2473 ret->in_handshake = s->in_handshake;
2474 ret->handshake_func = s->handshake_func;
2475 ret->server = s->server;
2476 ret->new_session = s->new_session;
2477 ret->quiet_shutdown = s->quiet_shutdown;
2478 ret->shutdown=s->shutdown;
2479 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2480 ret->rstate=s->rstate;
2481 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2484 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2486 /* dup the cipher_list and cipher_list_by_id stacks */
2487 if (s->cipher_list != NULL)
2489 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2492 if (s->cipher_list_by_id != NULL)
2493 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2497 /* Dup the client_CA list */
2498 if (s->client_CA != NULL)
2500 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2502 for (i=0; i<sk_X509_NAME_num(sk); i++)
2504 xn=sk_X509_NAME_value(sk,i);
2505 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2516 if (ret != NULL) SSL_free(ret);
2522 void ssl_clear_cipher_ctx(SSL *s)
2524 if (s->enc_read_ctx != NULL)
2526 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2527 OPENSSL_free(s->enc_read_ctx);
2528 s->enc_read_ctx=NULL;
2530 if (s->enc_write_ctx != NULL)
2532 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2533 OPENSSL_free(s->enc_write_ctx);
2534 s->enc_write_ctx=NULL;
2536 #ifndef OPENSSL_NO_COMP
2537 if (s->expand != NULL)
2539 COMP_CTX_free(s->expand);
2542 if (s->compress != NULL)
2544 COMP_CTX_free(s->compress);
2550 /* Fix this function so that it takes an optional type parameter */
2551 X509 *SSL_get_certificate(const SSL *s)
2553 if (s->cert != NULL)
2554 return(s->cert->key->x509);
2559 /* Fix this function so that it takes an optional type parameter */
2560 EVP_PKEY *SSL_get_privatekey(SSL *s)
2562 if (s->cert != NULL)
2563 return(s->cert->key->privatekey);
2568 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2570 if ((s->session != NULL) && (s->session->cipher != NULL))
2571 return(s->session->cipher);
2574 #ifdef OPENSSL_NO_COMP
2575 const void *SSL_get_current_compression(SSL *s)
2579 const void *SSL_get_current_expansion(SSL *s)
2585 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2587 if (s->compress != NULL)
2588 return(s->compress->meth);
2592 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2594 if (s->expand != NULL)
2595 return(s->expand->meth);
2600 int ssl_init_wbio_buffer(SSL *s,int push)
2604 if (s->bbio == NULL)
2606 bbio=BIO_new(BIO_f_buffer());
2607 if (bbio == NULL) return(0);
2613 if (s->bbio == s->wbio)
2614 s->wbio=BIO_pop(s->wbio);
2616 (void)BIO_reset(bbio);
2617 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2618 if (!BIO_set_read_buffer_size(bbio,1))
2620 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2625 if (s->wbio != bbio)
2626 s->wbio=BIO_push(bbio,s->wbio);
2630 if (s->wbio == bbio)
2631 s->wbio=BIO_pop(bbio);
2636 void ssl_free_wbio_buffer(SSL *s)
2638 if (s->bbio == NULL) return;
2640 if (s->bbio == s->wbio)
2642 /* remove buffering */
2643 s->wbio=BIO_pop(s->wbio);
2644 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2645 assert(s->wbio != NULL);
2652 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2654 ctx->quiet_shutdown=mode;
2657 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2659 return(ctx->quiet_shutdown);
2662 void SSL_set_quiet_shutdown(SSL *s,int mode)
2664 s->quiet_shutdown=mode;
2667 int SSL_get_quiet_shutdown(const SSL *s)
2669 return(s->quiet_shutdown);
2672 void SSL_set_shutdown(SSL *s,int mode)
2677 int SSL_get_shutdown(const SSL *s)
2679 return(s->shutdown);
2682 int SSL_version(const SSL *s)
2687 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2692 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2694 if (ssl->ctx == ctx)
2696 #ifndef OPENSSL_NO_TLSEXT
2698 ctx = ssl->initial_ctx;
2700 if (ssl->cert != NULL)
2701 ssl_cert_free(ssl->cert);
2702 ssl->cert = ssl_cert_dup(ctx->cert);
2703 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2704 if (ssl->ctx != NULL)
2705 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2710 #ifndef OPENSSL_NO_STDIO
2711 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2713 return(X509_STORE_set_default_paths(ctx->cert_store));
2716 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2719 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2723 void SSL_set_info_callback(SSL *ssl,
2724 void (*cb)(const SSL *ssl,int type,int val))
2726 ssl->info_callback=cb;
2729 /* One compiler (Diab DCC) doesn't like argument names in returned
2730 function pointer. */
2731 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2733 return ssl->info_callback;
2736 int SSL_state(const SSL *ssl)
2741 void SSL_set_verify_result(SSL *ssl,long arg)
2743 ssl->verify_result=arg;
2746 long SSL_get_verify_result(const SSL *ssl)
2748 return(ssl->verify_result);
2751 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2752 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2754 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2755 new_func, dup_func, free_func);
2758 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2760 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2763 void *SSL_get_ex_data(const SSL *s,int idx)
2765 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2768 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2769 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2771 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2772 new_func, dup_func, free_func);
2775 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2777 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2780 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
2782 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2790 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2792 return(ctx->cert_store);
2795 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2797 if (ctx->cert_store != NULL)
2798 X509_STORE_free(ctx->cert_store);
2799 ctx->cert_store=store;
2802 int SSL_want(const SSL *s)
2808 * \brief Set the callback for generating temporary RSA keys.
2809 * \param ctx the SSL context.
2810 * \param cb the callback
2813 #ifndef OPENSSL_NO_RSA
2814 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2818 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2821 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2825 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2831 * \brief The RSA temporary key callback function.
2832 * \param ssl the SSL session.
2833 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2834 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2835 * of the required key in bits.
2836 * \return the temporary RSA key.
2837 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2840 RSA *cb(SSL *ssl,int is_export,int keylength)
2845 * \brief Set the callback for generating temporary DH keys.
2846 * \param ctx the SSL context.
2847 * \param dh the callback
2850 #ifndef OPENSSL_NO_DH
2851 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2854 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2857 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2860 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2864 #ifndef OPENSSL_NO_ECDH
2865 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2868 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2871 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2874 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2878 #ifndef OPENSSL_NO_PSK
2879 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
2881 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2883 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2886 if (ctx->psk_identity_hint != NULL)
2887 OPENSSL_free(ctx->psk_identity_hint);
2888 if (identity_hint != NULL)
2890 ctx->psk_identity_hint = BUF_strdup(identity_hint);
2891 if (ctx->psk_identity_hint == NULL)
2895 ctx->psk_identity_hint = NULL;
2899 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
2904 if (s->session == NULL)
2905 return 1; /* session not created yet, ignored */
2907 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2909 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2912 if (s->session->psk_identity_hint != NULL)
2913 OPENSSL_free(s->session->psk_identity_hint);
2914 if (identity_hint != NULL)
2916 s->session->psk_identity_hint = BUF_strdup(identity_hint);
2917 if (s->session->psk_identity_hint == NULL)
2921 s->session->psk_identity_hint = NULL;
2925 const char *SSL_get_psk_identity_hint(const SSL *s)
2927 if (s == NULL || s->session == NULL)
2929 return(s->session->psk_identity_hint);
2932 const char *SSL_get_psk_identity(const SSL *s)
2934 if (s == NULL || s->session == NULL)
2936 return(s->session->psk_identity);
2939 void SSL_set_psk_client_callback(SSL *s,
2940 unsigned int (*cb)(SSL *ssl, const char *hint,
2941 char *identity, unsigned int max_identity_len, unsigned char *psk,
2942 unsigned int max_psk_len))
2944 s->psk_client_callback = cb;
2947 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
2948 unsigned int (*cb)(SSL *ssl, const char *hint,
2949 char *identity, unsigned int max_identity_len, unsigned char *psk,
2950 unsigned int max_psk_len))
2952 ctx->psk_client_callback = cb;
2955 void SSL_set_psk_server_callback(SSL *s,
2956 unsigned int (*cb)(SSL *ssl, const char *identity,
2957 unsigned char *psk, unsigned int max_psk_len))
2959 s->psk_server_callback = cb;
2962 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
2963 unsigned int (*cb)(SSL *ssl, const char *identity,
2964 unsigned char *psk, unsigned int max_psk_len))
2966 ctx->psk_server_callback = cb;
2970 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))
2972 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2974 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))
2976 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
2979 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
2980 * vairable, freeing EVP_MD_CTX previously stored in that variable, if
2981 * any. If EVP_MD pointer is passed, initializes ctx with this md
2982 * Returns newly allocated ctx;
2985 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
2987 ssl_clear_hash_ctx(hash);
2988 *hash = EVP_MD_CTX_create();
2989 if (md) EVP_DigestInit_ex(*hash,md,NULL);
2992 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
2995 if (*hash) EVP_MD_CTX_destroy(*hash);
2999 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3000 #include "../crypto/bio/bss_file.c"
3003 IMPLEMENT_STACK_OF(SSL_CIPHER)
3004 IMPLEMENT_STACK_OF(SSL_COMP)
3005 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,