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 #ifndef OPENSSL_NO_TLSEXT
560 if (s->tlsext_hostname)
561 OPENSSL_free(s->tlsext_hostname);
562 if (s->initial_ctx) SSL_CTX_free(s->initial_ctx);
563 #ifndef OPENSSL_NO_EC
564 if (s->tlsext_ecpointformatlist) OPENSSL_free(s->tlsext_ecpointformatlist);
565 if (s->tlsext_ellipticcurvelist) OPENSSL_free(s->tlsext_ellipticcurvelist);
566 #endif /* OPENSSL_NO_EC */
567 if (s->tlsext_opaque_prf_input) OPENSSL_free(s->tlsext_opaque_prf_input);
568 if (s->tlsext_ocsp_exts)
569 sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
570 X509_EXTENSION_free);
571 if (s->tlsext_ocsp_ids)
572 sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
573 if (s->tlsext_ocsp_resp)
574 OPENSSL_free(s->tlsext_ocsp_resp);
577 if (s->client_CA != NULL)
578 sk_X509_NAME_pop_free(s->client_CA,X509_NAME_free);
580 if (s->method != NULL) s->method->ssl_free(s);
582 if (s->ctx) SSL_CTX_free(s->ctx);
584 #ifndef OPENSSL_NO_KRB5
585 if (s->kssl_ctx != NULL)
586 kssl_ctx_free(s->kssl_ctx);
587 #endif /* OPENSSL_NO_KRB5 */
592 void SSL_set_bio(SSL *s,BIO *rbio,BIO *wbio)
594 /* If the output buffering BIO is still in place, remove it
598 if (s->wbio == s->bbio)
600 s->wbio=s->wbio->next_bio;
601 s->bbio->next_bio=NULL;
604 if ((s->rbio != NULL) && (s->rbio != rbio))
605 BIO_free_all(s->rbio);
606 if ((s->wbio != NULL) && (s->wbio != wbio) && (s->rbio != s->wbio))
607 BIO_free_all(s->wbio);
612 BIO *SSL_get_rbio(const SSL *s)
615 BIO *SSL_get_wbio(const SSL *s)
618 int SSL_get_fd(const SSL *s)
620 return(SSL_get_rfd(s));
623 int SSL_get_rfd(const SSL *s)
629 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
635 int SSL_get_wfd(const SSL *s)
641 r=BIO_find_type(b,BIO_TYPE_DESCRIPTOR);
647 #ifndef OPENSSL_NO_SOCK
648 int SSL_set_fd(SSL *s,int fd)
653 bio=BIO_new(BIO_s_socket());
657 SSLerr(SSL_F_SSL_SET_FD,ERR_R_BUF_LIB);
660 BIO_set_fd(bio,fd,BIO_NOCLOSE);
661 SSL_set_bio(s,bio,bio);
667 int SSL_set_wfd(SSL *s,int fd)
672 if ((s->rbio == NULL) || (BIO_method_type(s->rbio) != BIO_TYPE_SOCKET)
673 || ((int)BIO_get_fd(s->rbio,NULL) != fd))
675 bio=BIO_new(BIO_s_socket());
678 { SSLerr(SSL_F_SSL_SET_WFD,ERR_R_BUF_LIB); goto err; }
679 BIO_set_fd(bio,fd,BIO_NOCLOSE);
680 SSL_set_bio(s,SSL_get_rbio(s),bio);
683 SSL_set_bio(s,SSL_get_rbio(s),SSL_get_rbio(s));
689 int SSL_set_rfd(SSL *s,int fd)
694 if ((s->wbio == NULL) || (BIO_method_type(s->wbio) != BIO_TYPE_SOCKET)
695 || ((int)BIO_get_fd(s->wbio,NULL) != fd))
697 bio=BIO_new(BIO_s_socket());
701 SSLerr(SSL_F_SSL_SET_RFD,ERR_R_BUF_LIB);
704 BIO_set_fd(bio,fd,BIO_NOCLOSE);
705 SSL_set_bio(s,bio,SSL_get_wbio(s));
708 SSL_set_bio(s,SSL_get_wbio(s),SSL_get_wbio(s));
716 /* return length of latest Finished message we sent, copy to 'buf' */
717 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
723 ret = s->s3->tmp.finish_md_len;
726 memcpy(buf, s->s3->tmp.finish_md, count);
731 /* return length of latest Finished message we expected, copy to 'buf' */
732 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
738 ret = s->s3->tmp.peer_finish_md_len;
741 memcpy(buf, s->s3->tmp.peer_finish_md, count);
747 int SSL_get_verify_mode(const SSL *s)
749 return(s->verify_mode);
752 int SSL_get_verify_depth(const SSL *s)
754 return X509_VERIFY_PARAM_get_depth(s->param);
757 int (*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *)
759 return(s->verify_callback);
762 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
764 return(ctx->verify_mode);
767 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
769 return X509_VERIFY_PARAM_get_depth(ctx->param);
772 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx))(int,X509_STORE_CTX *)
774 return(ctx->default_verify_callback);
777 void SSL_set_verify(SSL *s,int mode,
778 int (*callback)(int ok,X509_STORE_CTX *ctx))
781 if (callback != NULL)
782 s->verify_callback=callback;
785 void SSL_set_verify_depth(SSL *s,int depth)
787 X509_VERIFY_PARAM_set_depth(s->param, depth);
790 void SSL_set_read_ahead(SSL *s,int yes)
795 int SSL_get_read_ahead(const SSL *s)
797 return(s->read_ahead);
800 int SSL_pending(const SSL *s)
802 /* SSL_pending cannot work properly if read-ahead is enabled
803 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)),
804 * and it is impossible to fix since SSL_pending cannot report
805 * errors that may be observed while scanning the new data.
806 * (Note that SSL_pending() is often used as a boolean value,
807 * so we'd better not return -1.)
809 return(s->method->ssl_pending(s));
812 X509 *SSL_get_peer_certificate(const SSL *s)
816 if ((s == NULL) || (s->session == NULL))
821 if (r == NULL) return(r);
823 CRYPTO_add(&r->references,1,CRYPTO_LOCK_X509);
828 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
832 if ((s == NULL) || (s->session == NULL) || (s->session->sess_cert == NULL))
835 r=s->session->sess_cert->cert_chain;
837 /* If we are a client, cert_chain includes the peer's own
838 * certificate; if we are a server, it does not. */
843 /* Now in theory, since the calling process own 't' it should be safe to
844 * modify. We need to be able to read f without being hassled */
845 void SSL_copy_session_id(SSL *t,const SSL *f)
849 /* Do we need to to SSL locking? */
850 SSL_set_session(t,SSL_get_session(f));
852 /* what if we are setup as SSLv2 but want to talk SSLv3 or
854 if (t->method != f->method)
856 t->method->ssl_free(t); /* cleanup current */
857 t->method=f->method; /* change method */
858 t->method->ssl_new(t); /* setup new */
864 CRYPTO_add(&f->cert->references,1,CRYPTO_LOCK_SSL_CERT);
869 if (tmp != NULL) ssl_cert_free(tmp);
870 SSL_set_session_id_context(t,f->sid_ctx,f->sid_ctx_length);
873 /* Fix this so it checks all the valid key/cert options */
874 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
876 if ( (ctx == NULL) ||
877 (ctx->cert == NULL) ||
878 (ctx->cert->key->x509 == NULL))
880 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
883 if (ctx->cert->key->privatekey == NULL)
885 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
888 return(X509_check_private_key(ctx->cert->key->x509, ctx->cert->key->privatekey));
891 /* Fix this function so that it takes an optional type parameter */
892 int SSL_check_private_key(const SSL *ssl)
896 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,ERR_R_PASSED_NULL_PARAMETER);
899 if (ssl->cert == NULL)
901 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
904 if (ssl->cert->key->x509 == NULL)
906 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_CERTIFICATE_ASSIGNED);
909 if (ssl->cert->key->privatekey == NULL)
911 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY,SSL_R_NO_PRIVATE_KEY_ASSIGNED);
914 return(X509_check_private_key(ssl->cert->key->x509,
915 ssl->cert->key->privatekey));
918 int SSL_accept(SSL *s)
920 if (s->handshake_func == 0)
921 /* Not properly initialized yet */
922 SSL_set_accept_state(s);
924 return(s->method->ssl_accept(s));
927 int SSL_connect(SSL *s)
929 if (s->handshake_func == 0)
930 /* Not properly initialized yet */
931 SSL_set_connect_state(s);
933 return(s->method->ssl_connect(s));
936 long SSL_get_default_timeout(const SSL *s)
938 return(s->method->get_timeout());
941 int SSL_read(SSL *s,void *buf,int num)
943 if (s->handshake_func == 0)
945 SSLerr(SSL_F_SSL_READ, SSL_R_UNINITIALIZED);
949 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
951 s->rwstate=SSL_NOTHING;
954 return(s->method->ssl_read(s,buf,num));
957 int SSL_peek(SSL *s,void *buf,int num)
959 if (s->handshake_func == 0)
961 SSLerr(SSL_F_SSL_PEEK, SSL_R_UNINITIALIZED);
965 if (s->shutdown & SSL_RECEIVED_SHUTDOWN)
969 return(s->method->ssl_peek(s,buf,num));
972 int SSL_write(SSL *s,const void *buf,int num)
974 if (s->handshake_func == 0)
976 SSLerr(SSL_F_SSL_WRITE, SSL_R_UNINITIALIZED);
980 if (s->shutdown & SSL_SENT_SHUTDOWN)
982 s->rwstate=SSL_NOTHING;
983 SSLerr(SSL_F_SSL_WRITE,SSL_R_PROTOCOL_IS_SHUTDOWN);
986 return(s->method->ssl_write(s,buf,num));
989 int SSL_shutdown(SSL *s)
991 /* Note that this function behaves differently from what one might
992 * expect. Return values are 0 for no success (yet),
993 * 1 for success; but calling it once is usually not enough,
994 * even if blocking I/O is used (see ssl3_shutdown).
997 if (s->handshake_func == 0)
999 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1003 if ((s != NULL) && !SSL_in_init(s))
1004 return(s->method->ssl_shutdown(s));
1009 int SSL_renegotiate(SSL *s)
1011 if (s->new_session == 0)
1015 return(s->method->ssl_renegotiate(s));
1018 int SSL_renegotiate_pending(SSL *s)
1020 /* becomes true when negotiation is requested;
1021 * false again once a handshake has finished */
1022 return (s->new_session != 0);
1025 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1031 case SSL_CTRL_GET_READ_AHEAD:
1032 return(s->read_ahead);
1033 case SSL_CTRL_SET_READ_AHEAD:
1038 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1039 s->msg_callback_arg = parg;
1042 case SSL_CTRL_OPTIONS:
1043 return(s->options|=larg);
1044 case SSL_CTRL_CLEAR_OPTIONS:
1045 return(s->options&=~larg);
1047 return(s->mode|=larg);
1048 case SSL_CTRL_CLEAR_MODE:
1049 return(s->mode &=~larg);
1050 case SSL_CTRL_GET_MAX_CERT_LIST:
1051 return(s->max_cert_list);
1052 case SSL_CTRL_SET_MAX_CERT_LIST:
1054 s->max_cert_list=larg;
1056 case SSL_CTRL_SET_MTU:
1057 #ifndef OPENSSL_NO_DTLS1
1058 if (larg < (long)dtls1_min_mtu())
1062 if (SSL_version(s) == DTLS1_VERSION ||
1063 SSL_version(s) == DTLS1_BAD_VER)
1069 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1070 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1072 s->max_send_fragment = larg;
1074 case SSL_CTRL_GET_RI_SUPPORT:
1076 return s->s3->send_connection_binding;
1079 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1083 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1087 case SSL_CTRL_SET_MSG_CALLBACK:
1088 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1092 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1096 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1098 return ctx->sessions;
1101 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1107 case SSL_CTRL_GET_READ_AHEAD:
1108 return(ctx->read_ahead);
1109 case SSL_CTRL_SET_READ_AHEAD:
1111 ctx->read_ahead=larg;
1114 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1115 ctx->msg_callback_arg = parg;
1118 case SSL_CTRL_GET_MAX_CERT_LIST:
1119 return(ctx->max_cert_list);
1120 case SSL_CTRL_SET_MAX_CERT_LIST:
1121 l=ctx->max_cert_list;
1122 ctx->max_cert_list=larg;
1125 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1126 l=ctx->session_cache_size;
1127 ctx->session_cache_size=larg;
1129 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1130 return(ctx->session_cache_size);
1131 case SSL_CTRL_SET_SESS_CACHE_MODE:
1132 l=ctx->session_cache_mode;
1133 ctx->session_cache_mode=larg;
1135 case SSL_CTRL_GET_SESS_CACHE_MODE:
1136 return(ctx->session_cache_mode);
1138 case SSL_CTRL_SESS_NUMBER:
1139 return(lh_SSL_SESSION_num_items(ctx->sessions));
1140 case SSL_CTRL_SESS_CONNECT:
1141 return(ctx->stats.sess_connect);
1142 case SSL_CTRL_SESS_CONNECT_GOOD:
1143 return(ctx->stats.sess_connect_good);
1144 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1145 return(ctx->stats.sess_connect_renegotiate);
1146 case SSL_CTRL_SESS_ACCEPT:
1147 return(ctx->stats.sess_accept);
1148 case SSL_CTRL_SESS_ACCEPT_GOOD:
1149 return(ctx->stats.sess_accept_good);
1150 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1151 return(ctx->stats.sess_accept_renegotiate);
1152 case SSL_CTRL_SESS_HIT:
1153 return(ctx->stats.sess_hit);
1154 case SSL_CTRL_SESS_CB_HIT:
1155 return(ctx->stats.sess_cb_hit);
1156 case SSL_CTRL_SESS_MISSES:
1157 return(ctx->stats.sess_miss);
1158 case SSL_CTRL_SESS_TIMEOUTS:
1159 return(ctx->stats.sess_timeout);
1160 case SSL_CTRL_SESS_CACHE_FULL:
1161 return(ctx->stats.sess_cache_full);
1162 case SSL_CTRL_OPTIONS:
1163 return(ctx->options|=larg);
1164 case SSL_CTRL_CLEAR_OPTIONS:
1165 return(ctx->options&=~larg);
1167 return(ctx->mode|=larg);
1168 case SSL_CTRL_CLEAR_MODE:
1169 return(ctx->mode&=~larg);
1170 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1171 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1173 ctx->max_send_fragment = larg;
1176 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1180 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1184 case SSL_CTRL_SET_MSG_CALLBACK:
1185 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1189 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1193 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1201 return((l > 0)?1:-1);
1204 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1205 const SSL_CIPHER * const *bp)
1209 l=(*ap)->id-(*bp)->id;
1213 return((l > 0)?1:-1);
1216 /** return a STACK of the ciphers available for the SSL and in order of
1218 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1222 if (s->cipher_list != NULL)
1224 return(s->cipher_list);
1226 else if ((s->ctx != NULL) &&
1227 (s->ctx->cipher_list != NULL))
1229 return(s->ctx->cipher_list);
1235 /** return a STACK of the ciphers available for the SSL and in order of
1237 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1241 if (s->cipher_list_by_id != NULL)
1243 return(s->cipher_list_by_id);
1245 else if ((s->ctx != NULL) &&
1246 (s->ctx->cipher_list_by_id != NULL))
1248 return(s->ctx->cipher_list_by_id);
1254 /** The old interface to get the same thing as SSL_get_ciphers() */
1255 const char *SSL_get_cipher_list(const SSL *s,int n)
1258 STACK_OF(SSL_CIPHER) *sk;
1260 if (s == NULL) return(NULL);
1261 sk=SSL_get_ciphers(s);
1262 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1264 c=sk_SSL_CIPHER_value(sk,n);
1265 if (c == NULL) return(NULL);
1269 /** specify the ciphers to be used by default by the SSL_CTX */
1270 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1272 STACK_OF(SSL_CIPHER) *sk;
1274 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1275 &ctx->cipher_list_by_id,str);
1276 /* ssl_create_cipher_list may return an empty stack if it
1277 * was unable to find a cipher matching the given rule string
1278 * (for example if the rule string specifies a cipher which
1279 * has been disabled). This is not an error as far as
1280 * ssl_create_cipher_list is concerned, and hence
1281 * ctx->cipher_list and ctx->cipher_list_by_id has been
1285 else if (sk_SSL_CIPHER_num(sk) == 0)
1287 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1293 /** specify the ciphers to be used by the SSL */
1294 int SSL_set_cipher_list(SSL *s,const char *str)
1296 STACK_OF(SSL_CIPHER) *sk;
1298 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1299 &s->cipher_list_by_id,str);
1300 /* see comment in SSL_CTX_set_cipher_list */
1303 else if (sk_SSL_CIPHER_num(sk) == 0)
1305 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1311 /* works well for SSLv2, not so good for SSLv3 */
1312 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1315 STACK_OF(SSL_CIPHER) *sk;
1319 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1324 sk=s->session->ciphers;
1325 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1329 c=sk_SSL_CIPHER_value(sk,i);
1347 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1348 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1353 #ifndef OPENSSL_NO_KRB5
1354 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1355 #endif /* OPENSSL_NO_KRB5 */
1357 if (sk == NULL) return(0);
1360 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1362 c=sk_SSL_CIPHER_value(sk,i);
1363 #ifndef OPENSSL_NO_KRB5
1364 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) &&
1367 #endif /* OPENSSL_NO_KRB5 */
1368 #ifndef OPENSSL_NO_PSK
1369 /* with PSK there must be client callback set */
1370 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) &&
1371 s->psk_client_callback == NULL)
1373 #endif /* OPENSSL_NO_PSK */
1374 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1377 /* If p == q, no ciphers and caller indicates an error. Otherwise
1378 * add SCSV if not renegotiating.
1380 if (p != q && !s->new_session)
1382 static SSL_CIPHER scsv =
1384 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1386 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1388 #ifdef OPENSSL_RI_DEBUG
1389 fprintf(stderr, "SCSV sent by client\n");
1396 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1397 STACK_OF(SSL_CIPHER) **skp)
1399 const SSL_CIPHER *c;
1400 STACK_OF(SSL_CIPHER) *sk;
1403 s->s3->send_connection_binding = 0;
1405 n=ssl_put_cipher_by_char(s,NULL,NULL);
1408 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1411 if ((skp == NULL) || (*skp == NULL))
1412 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1416 sk_SSL_CIPHER_zero(sk);
1419 for (i=0; i<num; i+=n)
1421 /* Check for SCSV */
1422 if (s->s3 && (n != 3 || !p[0]) &&
1423 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1424 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1426 /* SCSV fatal if renegotiating */
1429 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1430 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1433 s->s3->send_connection_binding = 1;
1435 #ifdef OPENSSL_RI_DEBUG
1436 fprintf(stderr, "SCSV received by server\n");
1441 c=ssl_get_cipher_by_char(s,p);
1445 if (!sk_SSL_CIPHER_push(sk,c))
1447 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1457 if ((skp == NULL) || (*skp == NULL))
1458 sk_SSL_CIPHER_free(sk);
1463 #ifndef OPENSSL_NO_TLSEXT
1464 /** return a servername extension value if provided in Client Hello, or NULL.
1465 * So far, only host_name types are defined (RFC 3546).
1468 const char *SSL_get_servername(const SSL *s, const int type)
1470 if (type != TLSEXT_NAMETYPE_host_name)
1473 return s->session && !s->tlsext_hostname ?
1474 s->session->tlsext_hostname :
1478 int SSL_get_servername_type(const SSL *s)
1480 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1481 return TLSEXT_NAMETYPE_host_name;
1486 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1491 ((unsigned int) a->session_id[0] )|
1492 ((unsigned int) a->session_id[1]<< 8L)|
1493 ((unsigned long)a->session_id[2]<<16L)|
1494 ((unsigned long)a->session_id[3]<<24L);
1498 /* NB: If this function (or indeed the hash function which uses a sort of
1499 * coarser function than this one) is changed, ensure
1500 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1501 * able to construct an SSL_SESSION that will collide with any existing session
1502 * with a matching session ID. */
1503 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1505 if (a->ssl_version != b->ssl_version)
1507 if (a->session_id_length != b->session_id_length)
1509 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1512 /* These wrapper functions should remain rather than redeclaring
1513 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1514 * variable. The reason is that the functions aren't static, they're exposed via
1516 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1517 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1519 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1525 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1529 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1531 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1534 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1538 memset(ret,0,sizeof(SSL_CTX));
1542 ret->cert_store=NULL;
1543 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1544 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1545 ret->session_cache_head=NULL;
1546 ret->session_cache_tail=NULL;
1548 /* We take the system default */
1549 ret->session_timeout=meth->get_timeout();
1551 ret->new_session_cb=0;
1552 ret->remove_session_cb=0;
1553 ret->get_session_cb=0;
1554 ret->generate_session_id=0;
1556 memset((char *)&ret->stats,0,sizeof(ret->stats));
1559 ret->quiet_shutdown=0;
1561 /* ret->cipher=NULL;*/
1562 /* ret->s2->challenge=NULL;
1563 ret->master_key=NULL;
1565 ret->s2->conn_id=NULL; */
1567 ret->info_callback=NULL;
1569 ret->app_verify_callback=0;
1570 ret->app_verify_arg=NULL;
1572 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1574 ret->msg_callback=0;
1575 ret->msg_callback_arg=NULL;
1576 ret->verify_mode=SSL_VERIFY_NONE;
1578 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1580 ret->sid_ctx_length=0;
1581 ret->default_verify_callback=NULL;
1582 if ((ret->cert=ssl_cert_new()) == NULL)
1585 ret->default_passwd_callback=0;
1586 ret->default_passwd_callback_userdata=NULL;
1587 ret->client_cert_cb=0;
1588 ret->app_gen_cookie_cb=0;
1589 ret->app_verify_cookie_cb=0;
1591 ret->sessions=lh_SSL_SESSION_new();
1592 if (ret->sessions == NULL) goto err;
1593 ret->cert_store=X509_STORE_new();
1594 if (ret->cert_store == NULL) goto err;
1596 ssl_create_cipher_list(ret->method,
1597 &ret->cipher_list,&ret->cipher_list_by_id,
1598 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1599 if (ret->cipher_list == NULL
1600 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1602 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1606 ret->param = X509_VERIFY_PARAM_new();
1610 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1612 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1615 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1617 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1620 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1622 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1626 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1629 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1631 ret->extra_certs=NULL;
1632 ret->comp_methods=SSL_COMP_get_compression_methods();
1634 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1636 #ifndef OPENSSL_NO_TLSEXT
1637 ret->tlsext_servername_callback = 0;
1638 ret->tlsext_servername_arg = NULL;
1639 /* Setup RFC4507 ticket keys */
1640 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1641 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1642 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1643 ret->options |= SSL_OP_NO_TICKET;
1645 ret->tlsext_status_cb = 0;
1646 ret->tlsext_status_arg = NULL;
1649 #ifndef OPENSSL_NO_PSK
1650 ret->psk_identity_hint=NULL;
1651 ret->psk_client_callback=NULL;
1652 ret->psk_server_callback=NULL;
1654 #ifndef OPENSSL_NO_BUF_FREELISTS
1655 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1656 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1657 if (!ret->rbuf_freelist)
1659 ret->rbuf_freelist->chunklen = 0;
1660 ret->rbuf_freelist->len = 0;
1661 ret->rbuf_freelist->head = NULL;
1662 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1663 if (!ret->wbuf_freelist)
1665 OPENSSL_free(ret->rbuf_freelist);
1668 ret->wbuf_freelist->chunklen = 0;
1669 ret->wbuf_freelist->len = 0;
1670 ret->wbuf_freelist->head = NULL;
1672 #ifndef OPENSSL_NO_ENGINE
1673 ret->client_cert_engine = NULL;
1674 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1675 #define eng_strx(x) #x
1676 #define eng_str(x) eng_strx(x)
1677 /* Use specific client engine automatically... ignore errors */
1680 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1684 ENGINE_load_builtin_engines();
1685 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1687 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1692 /* Default is to connect to non-RI servers. When RI is more widely
1693 * deployed might change this.
1695 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1699 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1701 if (ret != NULL) SSL_CTX_free(ret);
1706 static void SSL_COMP_free(SSL_COMP *comp)
1707 { OPENSSL_free(comp); }
1710 #ifndef OPENSSL_NO_BUF_FREELISTS
1712 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1714 SSL3_BUF_FREELIST_ENTRY *ent, *next;
1715 for (ent = list->head; ent; ent = next)
1724 void SSL_CTX_free(SSL_CTX *a)
1728 if (a == NULL) return;
1730 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1732 REF_PRINT("SSL_CTX",a);
1738 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1744 X509_VERIFY_PARAM_free(a->param);
1747 * Free internal session cache. However: the remove_cb() may reference
1748 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1749 * after the sessions were flushed.
1750 * As the ex_data handling routines might also touch the session cache,
1751 * the most secure solution seems to be: empty (flush) the cache, then
1752 * free ex_data, then finally free the cache.
1753 * (See ticket [openssl.org #212].)
1755 if (a->sessions != NULL)
1756 SSL_CTX_flush_sessions(a,0);
1758 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1760 if (a->sessions != NULL)
1761 lh_SSL_SESSION_free(a->sessions);
1763 if (a->cert_store != NULL)
1764 X509_STORE_free(a->cert_store);
1765 if (a->cipher_list != NULL)
1766 sk_SSL_CIPHER_free(a->cipher_list);
1767 if (a->cipher_list_by_id != NULL)
1768 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1769 if (a->cert != NULL)
1770 ssl_cert_free(a->cert);
1771 if (a->client_CA != NULL)
1772 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1773 if (a->extra_certs != NULL)
1774 sk_X509_pop_free(a->extra_certs,X509_free);
1775 #if 0 /* This should never be done, since it removes a global database */
1776 if (a->comp_methods != NULL)
1777 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1779 a->comp_methods = NULL;
1782 #ifndef OPENSSL_NO_PSK
1783 if (a->psk_identity_hint)
1784 OPENSSL_free(a->psk_identity_hint);
1786 #ifndef OPENSSL_NO_ENGINE
1787 if (a->client_cert_engine)
1788 ENGINE_finish(a->client_cert_engine);
1791 #ifndef OPENSSL_NO_BUF_FREELISTS
1792 if (a->wbuf_freelist)
1793 ssl_buf_freelist_free(a->wbuf_freelist);
1794 if (a->rbuf_freelist)
1795 ssl_buf_freelist_free(a->rbuf_freelist);
1801 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1803 ctx->default_passwd_callback=cb;
1806 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1808 ctx->default_passwd_callback_userdata=u;
1811 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1813 ctx->app_verify_callback=cb;
1814 ctx->app_verify_arg=arg;
1817 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1819 ctx->verify_mode=mode;
1820 ctx->default_verify_callback=cb;
1823 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1825 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1828 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
1831 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1832 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1833 int rsa_tmp_export,dh_tmp_export,kl;
1834 unsigned long mask_k,mask_a,emask_k,emask_a;
1835 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
1836 #ifndef OPENSSL_NO_ECDH
1840 EVP_PKEY *ecc_pkey = NULL;
1841 int signature_nid = 0, pk_nid = 0, md_nid = 0;
1843 if (c == NULL) return;
1845 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1847 #ifndef OPENSSL_NO_RSA
1848 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1849 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1850 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1852 rsa_tmp=rsa_tmp_export=0;
1854 #ifndef OPENSSL_NO_DH
1855 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1856 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1857 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1859 dh_tmp=dh_tmp_export=0;
1862 #ifndef OPENSSL_NO_ECDH
1863 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
1865 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1866 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1867 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1868 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1869 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1870 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1871 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1872 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1873 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1874 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1875 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1876 /* FIX THIS EAY EAY EAY */
1877 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1878 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1879 cpk= &(c->pkeys[SSL_PKEY_ECC]);
1880 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
1889 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1890 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
1891 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1894 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
1895 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
1896 mask_k |= SSL_kGOST;
1897 mask_a |= SSL_aGOST01;
1899 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
1900 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
1901 mask_k |= SSL_kGOST;
1902 mask_a |= SSL_aGOST94;
1905 if (rsa_enc || (rsa_tmp && rsa_sign))
1907 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1911 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1912 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1913 (rsa_enc || rsa_sign || dsa_sign))
1915 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1916 (rsa_enc || rsa_sign || dsa_sign))
1926 if (dh_rsa) mask_k|=SSL_kDHr;
1927 if (dh_rsa_export) emask_k|=SSL_kDHr;
1929 if (dh_dsa) mask_k|=SSL_kDHd;
1930 if (dh_dsa_export) emask_k|=SSL_kDHd;
1932 if (rsa_enc || rsa_sign)
1947 #ifndef OPENSSL_NO_KRB5
1954 /* An ECC certificate may be usable for ECDH and/or
1955 * ECDSA cipher suites depending on the key usage extension.
1959 /* This call populates extension flags (ex_flags) */
1960 x = (c->pkeys[SSL_PKEY_ECC]).x509;
1961 X509_check_purpose(x, -1, 0);
1962 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1963 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
1964 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1965 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
1966 ecc_pkey = X509_get_pubkey(x);
1967 ecc_pkey_size = (ecc_pkey != NULL) ?
1968 EVP_PKEY_bits(ecc_pkey) : 0;
1969 EVP_PKEY_free(ecc_pkey);
1970 if ((x->sig_alg) && (x->sig_alg->algorithm))
1972 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1973 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
1975 #ifndef OPENSSL_NO_ECDH
1979 if (pk_nid == NID_rsaEncryption || pk_nid == NID_rsa)
1983 if (ecc_pkey_size <= 163)
1985 emask_k|=SSL_kECDHr;
1990 if (pk_nid == NID_X9_62_id_ecPublicKey)
1994 if (ecc_pkey_size <= 163)
1996 emask_k|=SSL_kECDHe;
2002 #ifndef OPENSSL_NO_ECDSA
2006 emask_a|=SSL_aECDSA;
2011 #ifndef OPENSSL_NO_ECDH
2015 emask_k|=SSL_kEECDH;
2019 #ifndef OPENSSL_NO_PSK
2022 emask_k |= SSL_kPSK;
2023 emask_a |= SSL_aPSK;
2028 c->export_mask_k=emask_k;
2029 c->export_mask_a=emask_a;
2033 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2034 #define ku_reject(x, usage) \
2035 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2037 #ifndef OPENSSL_NO_EC
2039 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, const SSL_CIPHER *cs)
2041 unsigned long alg_k, alg_a;
2042 EVP_PKEY *pkey = NULL;
2044 int signature_nid = 0, md_nid = 0, pk_nid = 0;
2046 alg_k = cs->algorithm_mkey;
2047 alg_a = cs->algorithm_auth;
2049 if (SSL_C_IS_EXPORT(cs))
2051 /* ECDH key length in export ciphers must be <= 163 bits */
2052 pkey = X509_get_pubkey(x);
2053 if (pkey == NULL) return 0;
2054 keysize = EVP_PKEY_bits(pkey);
2055 EVP_PKEY_free(pkey);
2056 if (keysize > 163) return 0;
2059 /* This call populates the ex_flags field correctly */
2060 X509_check_purpose(x, -1, 0);
2061 if ((x->sig_alg) && (x->sig_alg->algorithm))
2063 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2064 OBJ_find_sigid_algs(signature_nid, &md_nid, &pk_nid);
2066 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2068 /* key usage, if present, must allow key agreement */
2069 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2071 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2074 if (alg_k & SSL_kECDHe)
2076 /* signature alg must be ECDSA */
2077 if (pk_nid != NID_X9_62_id_ecPublicKey)
2079 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2083 if (alg_k & SSL_kECDHr)
2085 /* signature alg must be RSA */
2087 if (pk_nid != NID_rsaEncryption && pk_nid != NID_rsa)
2089 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2094 if (alg_a & SSL_aECDSA)
2096 /* key usage, if present, must allow signing */
2097 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2099 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2104 return 1; /* all checks are ok */
2109 /* THIS NEEDS CLEANING UP */
2110 CERT_PKEY *ssl_get_server_send_pkey(const SSL *s)
2112 unsigned long alg_k,alg_a;
2117 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2119 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2120 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2122 if (alg_k & (SSL_kECDHr|SSL_kECDHe))
2124 /* we don't need to look at SSL_kEECDH
2125 * since no certificate is needed for
2126 * anon ECDH and for authenticated
2127 * EECDH, the check for the auth
2128 * algorithm will set i correctly
2129 * NOTE: For ECDH-RSA, we need an ECC
2130 * not an RSA cert but for EECDH-RSA
2131 * we need an RSA cert. Placing the
2132 * checks for SSL_kECDH before RSA
2133 * checks ensures the correct cert is chosen.
2137 else if (alg_a & SSL_aECDSA)
2141 else if (alg_k & SSL_kDHr)
2143 else if (alg_k & SSL_kDHd)
2145 else if (alg_a & SSL_aDSS)
2146 i=SSL_PKEY_DSA_SIGN;
2147 else if (alg_a & SSL_aRSA)
2149 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2150 i=SSL_PKEY_RSA_SIGN;
2154 else if (alg_a & SSL_aKRB5)
2156 /* VRS something else here? */
2159 else if (alg_a & SSL_aGOST94)
2161 else if (alg_a & SSL_aGOST01)
2163 else /* if (alg_a & SSL_aNULL) */
2165 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
2169 return c->pkeys + i;
2172 X509 *ssl_get_server_send_cert(const SSL *s)
2175 cpk = ssl_get_server_send_pkey(s);
2181 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher)
2183 unsigned long alg_a;
2186 alg_a = cipher->algorithm_auth;
2189 if ((alg_a & SSL_aDSS) &&
2190 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2191 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
2192 else if (alg_a & SSL_aRSA)
2194 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2195 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
2196 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2197 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
2201 else if ((alg_a & SSL_aECDSA) &&
2202 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2203 return(c->pkeys[SSL_PKEY_ECC].privatekey);
2204 else /* if (alg_a & SSL_aNULL) */
2206 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2211 void ssl_update_cache(SSL *s,int mode)
2215 /* If the session_id_length is 0, we are not supposed to cache it,
2216 * and it would be rather hard to do anyway :-) */
2217 if (s->session->session_id_length == 0) return;
2219 i=s->session_ctx->session_cache_mode;
2220 if ((i & mode) && (!s->hit)
2221 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2222 || SSL_CTX_add_session(s->session_ctx,s->session))
2223 && (s->session_ctx->new_session_cb != NULL))
2225 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2226 if (!s->session_ctx->new_session_cb(s,s->session))
2227 SSL_SESSION_free(s->session);
2230 /* auto flush every 255 connections */
2231 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2232 ((i & mode) == mode))
2234 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2235 ?s->session_ctx->stats.sess_connect_good
2236 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2238 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2243 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2248 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2253 if (s->method != meth)
2255 if (s->handshake_func != NULL)
2256 conn=(s->handshake_func == s->method->ssl_connect);
2258 if (s->method->version == meth->version)
2262 s->method->ssl_free(s);
2264 ret=s->method->ssl_new(s);
2268 s->handshake_func=meth->ssl_connect;
2270 s->handshake_func=meth->ssl_accept;
2275 int SSL_get_error(const SSL *s,int i)
2281 if (i > 0) return(SSL_ERROR_NONE);
2283 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2284 * etc, where we do encode the error */
2285 if ((l=ERR_peek_error()) != 0)
2287 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2288 return(SSL_ERROR_SYSCALL);
2290 return(SSL_ERROR_SSL);
2293 if ((i < 0) && SSL_want_read(s))
2295 bio=SSL_get_rbio(s);
2296 if (BIO_should_read(bio))
2297 return(SSL_ERROR_WANT_READ);
2298 else if (BIO_should_write(bio))
2299 /* This one doesn't make too much sense ... We never try
2300 * to write to the rbio, and an application program where
2301 * rbio and wbio are separate couldn't even know what it
2303 * However if we ever set s->rwstate incorrectly
2304 * (so that we have SSL_want_read(s) instead of
2305 * SSL_want_write(s)) and rbio and wbio *are* the same,
2306 * this test works around that bug; so it might be safer
2308 return(SSL_ERROR_WANT_WRITE);
2309 else if (BIO_should_io_special(bio))
2311 reason=BIO_get_retry_reason(bio);
2312 if (reason == BIO_RR_CONNECT)
2313 return(SSL_ERROR_WANT_CONNECT);
2314 else if (reason == BIO_RR_ACCEPT)
2315 return(SSL_ERROR_WANT_ACCEPT);
2317 return(SSL_ERROR_SYSCALL); /* unknown */
2321 if ((i < 0) && SSL_want_write(s))
2323 bio=SSL_get_wbio(s);
2324 if (BIO_should_write(bio))
2325 return(SSL_ERROR_WANT_WRITE);
2326 else if (BIO_should_read(bio))
2327 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2328 return(SSL_ERROR_WANT_READ);
2329 else if (BIO_should_io_special(bio))
2331 reason=BIO_get_retry_reason(bio);
2332 if (reason == BIO_RR_CONNECT)
2333 return(SSL_ERROR_WANT_CONNECT);
2334 else if (reason == BIO_RR_ACCEPT)
2335 return(SSL_ERROR_WANT_ACCEPT);
2337 return(SSL_ERROR_SYSCALL);
2340 if ((i < 0) && SSL_want_x509_lookup(s))
2342 return(SSL_ERROR_WANT_X509_LOOKUP);
2347 if (s->version == SSL2_VERSION)
2349 /* assume it is the socket being closed */
2350 return(SSL_ERROR_ZERO_RETURN);
2354 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2355 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2356 return(SSL_ERROR_ZERO_RETURN);
2359 return(SSL_ERROR_SYSCALL);
2362 int SSL_do_handshake(SSL *s)
2366 if (s->handshake_func == NULL)
2368 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2372 s->method->ssl_renegotiate_check(s);
2374 if (SSL_in_init(s) || SSL_in_before(s))
2376 ret=s->handshake_func(s);
2381 /* For the next 2 functions, SSL_clear() sets shutdown and so
2382 * one of these calls will reset it */
2383 void SSL_set_accept_state(SSL *s)
2387 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2388 s->handshake_func=s->method->ssl_accept;
2389 /* clear the current cipher */
2390 ssl_clear_cipher_ctx(s);
2391 ssl_clear_hash_ctx(&s->read_hash);
2392 ssl_clear_hash_ctx(&s->write_hash);
2395 void SSL_set_connect_state(SSL *s)
2399 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2400 s->handshake_func=s->method->ssl_connect;
2401 /* clear the current cipher */
2402 ssl_clear_cipher_ctx(s);
2403 ssl_clear_hash_ctx(&s->read_hash);
2404 ssl_clear_hash_ctx(&s->write_hash);
2407 int ssl_undefined_function(SSL *s)
2409 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2413 int ssl_undefined_void_function(void)
2415 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2419 int ssl_undefined_const_function(const SSL *s)
2421 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2425 SSL_METHOD *ssl_bad_method(int ver)
2427 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2431 const char *SSL_get_version(const SSL *s)
2433 if (s->version == TLS1_VERSION)
2435 else if (s->version == SSL3_VERSION)
2437 else if (s->version == SSL2_VERSION)
2443 SSL *SSL_dup(SSL *s)
2445 STACK_OF(X509_NAME) *sk;
2450 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2453 ret->version = s->version;
2454 ret->type = s->type;
2455 ret->method = s->method;
2457 if (s->session != NULL)
2459 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2460 SSL_copy_session_id(ret,s);
2464 /* No session has been established yet, so we have to expect
2465 * that s->cert or ret->cert will be changed later --
2466 * they should not both point to the same object,
2467 * and thus we can't use SSL_copy_session_id. */
2469 ret->method->ssl_free(ret);
2470 ret->method = s->method;
2471 ret->method->ssl_new(ret);
2473 if (s->cert != NULL)
2475 if (ret->cert != NULL)
2477 ssl_cert_free(ret->cert);
2479 ret->cert = ssl_cert_dup(s->cert);
2480 if (ret->cert == NULL)
2484 SSL_set_session_id_context(ret,
2485 s->sid_ctx, s->sid_ctx_length);
2488 ret->options=s->options;
2490 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2491 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2492 ret->msg_callback = s->msg_callback;
2493 ret->msg_callback_arg = s->msg_callback_arg;
2494 SSL_set_verify(ret,SSL_get_verify_mode(s),
2495 SSL_get_verify_callback(s));
2496 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2497 ret->generate_session_id = s->generate_session_id;
2499 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2501 ret->debug=s->debug;
2503 /* copy app data, a little dangerous perhaps */
2504 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2507 /* setup rbio, and wbio */
2508 if (s->rbio != NULL)
2510 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2513 if (s->wbio != NULL)
2515 if (s->wbio != s->rbio)
2517 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2521 ret->wbio=ret->rbio;
2523 ret->rwstate = s->rwstate;
2524 ret->in_handshake = s->in_handshake;
2525 ret->handshake_func = s->handshake_func;
2526 ret->server = s->server;
2527 ret->new_session = s->new_session;
2528 ret->quiet_shutdown = s->quiet_shutdown;
2529 ret->shutdown=s->shutdown;
2530 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2531 ret->rstate=s->rstate;
2532 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2535 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2537 /* dup the cipher_list and cipher_list_by_id stacks */
2538 if (s->cipher_list != NULL)
2540 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2543 if (s->cipher_list_by_id != NULL)
2544 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2548 /* Dup the client_CA list */
2549 if (s->client_CA != NULL)
2551 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2553 for (i=0; i<sk_X509_NAME_num(sk); i++)
2555 xn=sk_X509_NAME_value(sk,i);
2556 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2567 if (ret != NULL) SSL_free(ret);
2573 void ssl_clear_cipher_ctx(SSL *s)
2575 if (s->enc_read_ctx != NULL)
2577 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2578 OPENSSL_free(s->enc_read_ctx);
2579 s->enc_read_ctx=NULL;
2581 if (s->enc_write_ctx != NULL)
2583 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2584 OPENSSL_free(s->enc_write_ctx);
2585 s->enc_write_ctx=NULL;
2587 #ifndef OPENSSL_NO_COMP
2588 if (s->expand != NULL)
2590 COMP_CTX_free(s->expand);
2593 if (s->compress != NULL)
2595 COMP_CTX_free(s->compress);
2601 /* Fix this function so that it takes an optional type parameter */
2602 X509 *SSL_get_certificate(const SSL *s)
2605 return(ssl_get_server_send_cert(s));
2606 else if (s->cert != NULL)
2607 return(s->cert->key->x509);
2612 /* Fix this function so that it takes an optional type parameter */
2613 EVP_PKEY *SSL_get_privatekey(SSL *s)
2615 if (s->cert != NULL)
2616 return(s->cert->key->privatekey);
2621 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2623 if ((s->session != NULL) && (s->session->cipher != NULL))
2624 return(s->session->cipher);
2627 #ifdef OPENSSL_NO_COMP
2628 const void *SSL_get_current_compression(SSL *s)
2632 const void *SSL_get_current_expansion(SSL *s)
2638 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2640 if (s->compress != NULL)
2641 return(s->compress->meth);
2645 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2647 if (s->expand != NULL)
2648 return(s->expand->meth);
2653 int ssl_init_wbio_buffer(SSL *s,int push)
2657 if (s->bbio == NULL)
2659 bbio=BIO_new(BIO_f_buffer());
2660 if (bbio == NULL) return(0);
2666 if (s->bbio == s->wbio)
2667 s->wbio=BIO_pop(s->wbio);
2669 (void)BIO_reset(bbio);
2670 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2671 if (!BIO_set_read_buffer_size(bbio,1))
2673 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2678 if (s->wbio != bbio)
2679 s->wbio=BIO_push(bbio,s->wbio);
2683 if (s->wbio == bbio)
2684 s->wbio=BIO_pop(bbio);
2689 void ssl_free_wbio_buffer(SSL *s)
2691 if (s->bbio == NULL) return;
2693 if (s->bbio == s->wbio)
2695 /* remove buffering */
2696 s->wbio=BIO_pop(s->wbio);
2697 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2698 assert(s->wbio != NULL);
2705 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2707 ctx->quiet_shutdown=mode;
2710 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2712 return(ctx->quiet_shutdown);
2715 void SSL_set_quiet_shutdown(SSL *s,int mode)
2717 s->quiet_shutdown=mode;
2720 int SSL_get_quiet_shutdown(const SSL *s)
2722 return(s->quiet_shutdown);
2725 void SSL_set_shutdown(SSL *s,int mode)
2730 int SSL_get_shutdown(const SSL *s)
2732 return(s->shutdown);
2735 int SSL_version(const SSL *s)
2740 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2745 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2747 if (ssl->ctx == ctx)
2749 #ifndef OPENSSL_NO_TLSEXT
2751 ctx = ssl->initial_ctx;
2753 if (ssl->cert != NULL)
2754 ssl_cert_free(ssl->cert);
2755 ssl->cert = ssl_cert_dup(ctx->cert);
2756 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2757 if (ssl->ctx != NULL)
2758 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2763 #ifndef OPENSSL_NO_STDIO
2764 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2766 return(X509_STORE_set_default_paths(ctx->cert_store));
2769 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2772 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2776 void SSL_set_info_callback(SSL *ssl,
2777 void (*cb)(const SSL *ssl,int type,int val))
2779 ssl->info_callback=cb;
2782 /* One compiler (Diab DCC) doesn't like argument names in returned
2783 function pointer. */
2784 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2786 return ssl->info_callback;
2789 int SSL_state(const SSL *ssl)
2794 void SSL_set_verify_result(SSL *ssl,long arg)
2796 ssl->verify_result=arg;
2799 long SSL_get_verify_result(const SSL *ssl)
2801 return(ssl->verify_result);
2804 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2805 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2807 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2808 new_func, dup_func, free_func);
2811 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2813 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2816 void *SSL_get_ex_data(const SSL *s,int idx)
2818 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2821 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2822 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2824 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2825 new_func, dup_func, free_func);
2828 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2830 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2833 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
2835 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2843 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2845 return(ctx->cert_store);
2848 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2850 if (ctx->cert_store != NULL)
2851 X509_STORE_free(ctx->cert_store);
2852 ctx->cert_store=store;
2855 int SSL_want(const SSL *s)
2861 * \brief Set the callback for generating temporary RSA keys.
2862 * \param ctx the SSL context.
2863 * \param cb the callback
2866 #ifndef OPENSSL_NO_RSA
2867 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2871 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2874 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2878 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2884 * \brief The RSA temporary key callback function.
2885 * \param ssl the SSL session.
2886 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2887 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2888 * of the required key in bits.
2889 * \return the temporary RSA key.
2890 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2893 RSA *cb(SSL *ssl,int is_export,int keylength)
2898 * \brief Set the callback for generating temporary DH keys.
2899 * \param ctx the SSL context.
2900 * \param dh the callback
2903 #ifndef OPENSSL_NO_DH
2904 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2907 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2910 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2913 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2917 #ifndef OPENSSL_NO_ECDH
2918 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2921 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2924 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2927 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2931 #ifndef OPENSSL_NO_PSK
2932 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
2934 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2936 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2939 if (ctx->psk_identity_hint != NULL)
2940 OPENSSL_free(ctx->psk_identity_hint);
2941 if (identity_hint != NULL)
2943 ctx->psk_identity_hint = BUF_strdup(identity_hint);
2944 if (ctx->psk_identity_hint == NULL)
2948 ctx->psk_identity_hint = NULL;
2952 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
2957 if (s->session == NULL)
2958 return 1; /* session not created yet, ignored */
2960 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2962 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2965 if (s->session->psk_identity_hint != NULL)
2966 OPENSSL_free(s->session->psk_identity_hint);
2967 if (identity_hint != NULL)
2969 s->session->psk_identity_hint = BUF_strdup(identity_hint);
2970 if (s->session->psk_identity_hint == NULL)
2974 s->session->psk_identity_hint = NULL;
2978 const char *SSL_get_psk_identity_hint(const SSL *s)
2980 if (s == NULL || s->session == NULL)
2982 return(s->session->psk_identity_hint);
2985 const char *SSL_get_psk_identity(const SSL *s)
2987 if (s == NULL || s->session == NULL)
2989 return(s->session->psk_identity);
2992 void SSL_set_psk_client_callback(SSL *s,
2993 unsigned int (*cb)(SSL *ssl, const char *hint,
2994 char *identity, unsigned int max_identity_len, unsigned char *psk,
2995 unsigned int max_psk_len))
2997 s->psk_client_callback = cb;
3000 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3001 unsigned int (*cb)(SSL *ssl, const char *hint,
3002 char *identity, unsigned int max_identity_len, unsigned char *psk,
3003 unsigned int max_psk_len))
3005 ctx->psk_client_callback = cb;
3008 void SSL_set_psk_server_callback(SSL *s,
3009 unsigned int (*cb)(SSL *ssl, const char *identity,
3010 unsigned char *psk, unsigned int max_psk_len))
3012 s->psk_server_callback = cb;
3015 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3016 unsigned int (*cb)(SSL *ssl, const char *identity,
3017 unsigned char *psk, unsigned int max_psk_len))
3019 ctx->psk_server_callback = cb;
3023 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))
3025 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3027 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))
3029 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3032 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3033 * vairable, freeing EVP_MD_CTX previously stored in that variable, if
3034 * any. If EVP_MD pointer is passed, initializes ctx with this md
3035 * Returns newly allocated ctx;
3038 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
3040 ssl_clear_hash_ctx(hash);
3041 *hash = EVP_MD_CTX_create();
3042 if (md) EVP_DigestInit_ex(*hash,md,NULL);
3045 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3048 if (*hash) EVP_MD_CTX_destroy(*hash);
3052 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3053 #include "../crypto/bio/bss_file.c"
3056 IMPLEMENT_STACK_OF(SSL_CIPHER)
3057 IMPLEMENT_STACK_OF(SSL_COMP)
3058 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,