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->renegotiate) 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->renegotiate == 0)
1016 return(s->method->ssl_renegotiate(s));
1019 int SSL_renegotiate_abbreviated(SSL *s)
1021 if (s->renegotiate == 0)
1026 return(s->method->ssl_renegotiate(s));
1029 int SSL_renegotiate_pending(SSL *s)
1031 /* becomes true when negotiation is requested;
1032 * false again once a handshake has finished */
1033 return (s->renegotiate != 0);
1036 long SSL_ctrl(SSL *s,int cmd,long larg,void *parg)
1042 case SSL_CTRL_GET_READ_AHEAD:
1043 return(s->read_ahead);
1044 case SSL_CTRL_SET_READ_AHEAD:
1049 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1050 s->msg_callback_arg = parg;
1053 case SSL_CTRL_OPTIONS:
1054 return(s->options|=larg);
1055 case SSL_CTRL_CLEAR_OPTIONS:
1056 return(s->options&=~larg);
1058 return(s->mode|=larg);
1059 case SSL_CTRL_CLEAR_MODE:
1060 return(s->mode &=~larg);
1061 case SSL_CTRL_GET_MAX_CERT_LIST:
1062 return(s->max_cert_list);
1063 case SSL_CTRL_SET_MAX_CERT_LIST:
1065 s->max_cert_list=larg;
1067 case SSL_CTRL_SET_MTU:
1068 if (SSL_version(s) == DTLS1_VERSION ||
1069 SSL_version(s) == DTLS1_BAD_VER)
1075 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1076 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1078 s->max_send_fragment = larg;
1080 case SSL_CTRL_GET_RI_SUPPORT:
1082 return s->s3->send_connection_binding;
1085 return(s->method->ssl_ctrl(s,cmd,larg,parg));
1089 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp)(void))
1093 case SSL_CTRL_SET_MSG_CALLBACK:
1094 s->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1098 return(s->method->ssl_callback_ctrl(s,cmd,fp));
1102 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
1104 return ctx->sessions;
1107 long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd,long larg,void *parg)
1113 case SSL_CTRL_GET_READ_AHEAD:
1114 return(ctx->read_ahead);
1115 case SSL_CTRL_SET_READ_AHEAD:
1117 ctx->read_ahead=larg;
1120 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
1121 ctx->msg_callback_arg = parg;
1124 case SSL_CTRL_GET_MAX_CERT_LIST:
1125 return(ctx->max_cert_list);
1126 case SSL_CTRL_SET_MAX_CERT_LIST:
1127 l=ctx->max_cert_list;
1128 ctx->max_cert_list=larg;
1131 case SSL_CTRL_SET_SESS_CACHE_SIZE:
1132 l=ctx->session_cache_size;
1133 ctx->session_cache_size=larg;
1135 case SSL_CTRL_GET_SESS_CACHE_SIZE:
1136 return(ctx->session_cache_size);
1137 case SSL_CTRL_SET_SESS_CACHE_MODE:
1138 l=ctx->session_cache_mode;
1139 ctx->session_cache_mode=larg;
1141 case SSL_CTRL_GET_SESS_CACHE_MODE:
1142 return(ctx->session_cache_mode);
1144 case SSL_CTRL_SESS_NUMBER:
1145 return(lh_SSL_SESSION_num_items(ctx->sessions));
1146 case SSL_CTRL_SESS_CONNECT:
1147 return(ctx->stats.sess_connect);
1148 case SSL_CTRL_SESS_CONNECT_GOOD:
1149 return(ctx->stats.sess_connect_good);
1150 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1151 return(ctx->stats.sess_connect_renegotiate);
1152 case SSL_CTRL_SESS_ACCEPT:
1153 return(ctx->stats.sess_accept);
1154 case SSL_CTRL_SESS_ACCEPT_GOOD:
1155 return(ctx->stats.sess_accept_good);
1156 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1157 return(ctx->stats.sess_accept_renegotiate);
1158 case SSL_CTRL_SESS_HIT:
1159 return(ctx->stats.sess_hit);
1160 case SSL_CTRL_SESS_CB_HIT:
1161 return(ctx->stats.sess_cb_hit);
1162 case SSL_CTRL_SESS_MISSES:
1163 return(ctx->stats.sess_miss);
1164 case SSL_CTRL_SESS_TIMEOUTS:
1165 return(ctx->stats.sess_timeout);
1166 case SSL_CTRL_SESS_CACHE_FULL:
1167 return(ctx->stats.sess_cache_full);
1168 case SSL_CTRL_OPTIONS:
1169 return(ctx->options|=larg);
1170 case SSL_CTRL_CLEAR_OPTIONS:
1171 return(ctx->options&=~larg);
1173 return(ctx->mode|=larg);
1174 case SSL_CTRL_CLEAR_MODE:
1175 return(ctx->mode&=~larg);
1176 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
1177 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
1179 ctx->max_send_fragment = larg;
1182 return(ctx->method->ssl_ctx_ctrl(ctx,cmd,larg,parg));
1186 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp)(void))
1190 case SSL_CTRL_SET_MSG_CALLBACK:
1191 ctx->msg_callback = (void (*)(int write_p, int version, int content_type, const void *buf, size_t len, SSL *ssl, void *arg))(fp);
1195 return(ctx->method->ssl_ctx_callback_ctrl(ctx,cmd,fp));
1199 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
1207 return((l > 0)?1:-1);
1210 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
1211 const SSL_CIPHER * const *bp)
1215 l=(*ap)->id-(*bp)->id;
1219 return((l > 0)?1:-1);
1222 /** return a STACK of the ciphers available for the SSL and in order of
1224 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
1228 if (s->cipher_list != NULL)
1230 return(s->cipher_list);
1232 else if ((s->ctx != NULL) &&
1233 (s->ctx->cipher_list != NULL))
1235 return(s->ctx->cipher_list);
1241 /** return a STACK of the ciphers available for the SSL and in order of
1243 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
1247 if (s->cipher_list_by_id != NULL)
1249 return(s->cipher_list_by_id);
1251 else if ((s->ctx != NULL) &&
1252 (s->ctx->cipher_list_by_id != NULL))
1254 return(s->ctx->cipher_list_by_id);
1260 /** The old interface to get the same thing as SSL_get_ciphers() */
1261 const char *SSL_get_cipher_list(const SSL *s,int n)
1264 STACK_OF(SSL_CIPHER) *sk;
1266 if (s == NULL) return(NULL);
1267 sk=SSL_get_ciphers(s);
1268 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
1270 c=sk_SSL_CIPHER_value(sk,n);
1271 if (c == NULL) return(NULL);
1275 /** specify the ciphers to be used by default by the SSL_CTX */
1276 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
1278 STACK_OF(SSL_CIPHER) *sk;
1280 sk=ssl_create_cipher_list(ctx->method,&ctx->cipher_list,
1281 &ctx->cipher_list_by_id,str);
1282 /* ssl_create_cipher_list may return an empty stack if it
1283 * was unable to find a cipher matching the given rule string
1284 * (for example if the rule string specifies a cipher which
1285 * has been disabled). This is not an error as far as
1286 * ssl_create_cipher_list is concerned, and hence
1287 * ctx->cipher_list and ctx->cipher_list_by_id has been
1291 else if (sk_SSL_CIPHER_num(sk) == 0)
1293 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1299 /** specify the ciphers to be used by the SSL */
1300 int SSL_set_cipher_list(SSL *s,const char *str)
1302 STACK_OF(SSL_CIPHER) *sk;
1304 sk=ssl_create_cipher_list(s->ctx->method,&s->cipher_list,
1305 &s->cipher_list_by_id,str);
1306 /* see comment in SSL_CTX_set_cipher_list */
1309 else if (sk_SSL_CIPHER_num(sk) == 0)
1311 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
1317 /* works well for SSLv2, not so good for SSLv3 */
1318 char *SSL_get_shared_ciphers(const SSL *s,char *buf,int len)
1321 STACK_OF(SSL_CIPHER) *sk;
1325 if ((s->session == NULL) || (s->session->ciphers == NULL) ||
1330 sk=s->session->ciphers;
1331 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1335 c=sk_SSL_CIPHER_value(sk,i);
1353 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
1354 int (*put_cb)(const SSL_CIPHER *, unsigned char *))
1359 #ifndef OPENSSL_NO_KRB5
1360 int nokrb5 = !kssl_tgt_is_available(s->kssl_ctx);
1361 #endif /* OPENSSL_NO_KRB5 */
1363 if (sk == NULL) return(0);
1366 for (i=0; i<sk_SSL_CIPHER_num(sk); i++)
1368 c=sk_SSL_CIPHER_value(sk,i);
1369 #ifndef OPENSSL_NO_KRB5
1370 if (((c->algorithm_mkey & SSL_kKRB5) || (c->algorithm_auth & SSL_aKRB5)) &&
1373 #endif /* OPENSSL_NO_KRB5 */
1374 #ifndef OPENSSL_NO_PSK
1375 /* with PSK there must be client callback set */
1376 if (((c->algorithm_mkey & SSL_kPSK) || (c->algorithm_auth & SSL_aPSK)) &&
1377 s->psk_client_callback == NULL)
1379 #endif /* OPENSSL_NO_PSK */
1380 j = put_cb ? put_cb(c,p) : ssl_put_cipher_by_char(s,c,p);
1383 /* If p == q, no ciphers and caller indicates an error. Otherwise
1384 * add SCSV if not renegotiating.
1386 if (p != q && !s->renegotiate)
1388 static SSL_CIPHER scsv =
1390 0, NULL, SSL3_CK_SCSV, 0, 0, 0, 0, 0, 0, 0, 0, 0
1392 j = put_cb ? put_cb(&scsv,p) : ssl_put_cipher_by_char(s,&scsv,p);
1394 #ifdef OPENSSL_RI_DEBUG
1395 fprintf(stderr, "SCSV sent by client\n");
1402 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
1403 STACK_OF(SSL_CIPHER) **skp)
1405 const SSL_CIPHER *c;
1406 STACK_OF(SSL_CIPHER) *sk;
1409 s->s3->send_connection_binding = 0;
1411 n=ssl_put_cipher_by_char(s,NULL,NULL);
1414 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
1417 if ((skp == NULL) || (*skp == NULL))
1418 sk=sk_SSL_CIPHER_new_null(); /* change perhaps later */
1422 sk_SSL_CIPHER_zero(sk);
1425 for (i=0; i<num; i+=n)
1427 /* Check for SCSV */
1428 if (s->s3 && (n != 3 || !p[0]) &&
1429 (p[n-2] == ((SSL3_CK_SCSV >> 8) & 0xff)) &&
1430 (p[n-1] == (SSL3_CK_SCSV & 0xff)))
1432 /* SCSV fatal if renegotiating */
1435 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,SSL_R_SCSV_RECEIVED_WHEN_RENEGOTIATING);
1436 ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
1439 s->s3->send_connection_binding = 1;
1441 #ifdef OPENSSL_RI_DEBUG
1442 fprintf(stderr, "SCSV received by server\n");
1447 c=ssl_get_cipher_by_char(s,p);
1451 if (!sk_SSL_CIPHER_push(sk,c))
1453 SSLerr(SSL_F_SSL_BYTES_TO_CIPHER_LIST,ERR_R_MALLOC_FAILURE);
1463 if ((skp == NULL) || (*skp == NULL))
1464 sk_SSL_CIPHER_free(sk);
1469 #ifndef OPENSSL_NO_TLSEXT
1470 /** return a servername extension value if provided in Client Hello, or NULL.
1471 * So far, only host_name types are defined (RFC 3546).
1474 const char *SSL_get_servername(const SSL *s, const int type)
1476 if (type != TLSEXT_NAMETYPE_host_name)
1479 return s->session && !s->tlsext_hostname ?
1480 s->session->tlsext_hostname :
1484 int SSL_get_servername_type(const SSL *s)
1486 if (s->session && (!s->tlsext_hostname ? s->session->tlsext_hostname : s->tlsext_hostname))
1487 return TLSEXT_NAMETYPE_host_name;
1492 static unsigned long ssl_session_hash(const SSL_SESSION *a)
1497 ((unsigned int) a->session_id[0] )|
1498 ((unsigned int) a->session_id[1]<< 8L)|
1499 ((unsigned long)a->session_id[2]<<16L)|
1500 ((unsigned long)a->session_id[3]<<24L);
1504 /* NB: If this function (or indeed the hash function which uses a sort of
1505 * coarser function than this one) is changed, ensure
1506 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on being
1507 * able to construct an SSL_SESSION that will collide with any existing session
1508 * with a matching session ID. */
1509 static int ssl_session_cmp(const SSL_SESSION *a,const SSL_SESSION *b)
1511 if (a->ssl_version != b->ssl_version)
1513 if (a->session_id_length != b->session_id_length)
1515 return(memcmp(a->session_id,b->session_id,a->session_id_length));
1518 /* These wrapper functions should remain rather than redeclaring
1519 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
1520 * variable. The reason is that the functions aren't static, they're exposed via
1522 static IMPLEMENT_LHASH_HASH_FN(ssl_session, SSL_SESSION)
1523 static IMPLEMENT_LHASH_COMP_FN(ssl_session, SSL_SESSION)
1525 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
1531 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_NULL_SSL_METHOD_PASSED);
1535 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0)
1537 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
1540 ret=(SSL_CTX *)OPENSSL_malloc(sizeof(SSL_CTX));
1544 memset(ret,0,sizeof(SSL_CTX));
1548 ret->cert_store=NULL;
1549 ret->session_cache_mode=SSL_SESS_CACHE_SERVER;
1550 ret->session_cache_size=SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
1551 ret->session_cache_head=NULL;
1552 ret->session_cache_tail=NULL;
1554 /* We take the system default */
1555 ret->session_timeout=meth->get_timeout();
1557 ret->new_session_cb=0;
1558 ret->remove_session_cb=0;
1559 ret->get_session_cb=0;
1560 ret->generate_session_id=0;
1562 memset((char *)&ret->stats,0,sizeof(ret->stats));
1565 ret->quiet_shutdown=0;
1567 /* ret->cipher=NULL;*/
1568 /* ret->s2->challenge=NULL;
1569 ret->master_key=NULL;
1571 ret->s2->conn_id=NULL; */
1573 ret->info_callback=NULL;
1575 ret->app_verify_callback=0;
1576 ret->app_verify_arg=NULL;
1578 ret->max_cert_list=SSL_MAX_CERT_LIST_DEFAULT;
1580 ret->msg_callback=0;
1581 ret->msg_callback_arg=NULL;
1582 ret->verify_mode=SSL_VERIFY_NONE;
1584 ret->verify_depth=-1; /* Don't impose a limit (but x509_lu.c does) */
1586 ret->sid_ctx_length=0;
1587 ret->default_verify_callback=NULL;
1588 if ((ret->cert=ssl_cert_new()) == NULL)
1591 ret->default_passwd_callback=0;
1592 ret->default_passwd_callback_userdata=NULL;
1593 ret->client_cert_cb=0;
1594 ret->app_gen_cookie_cb=0;
1595 ret->app_verify_cookie_cb=0;
1597 ret->sessions=lh_SSL_SESSION_new();
1598 if (ret->sessions == NULL) goto err;
1599 ret->cert_store=X509_STORE_new();
1600 if (ret->cert_store == NULL) goto err;
1602 ssl_create_cipher_list(ret->method,
1603 &ret->cipher_list,&ret->cipher_list_by_id,
1604 meth->version == SSL2_VERSION ? "SSLv2" : SSL_DEFAULT_CIPHER_LIST);
1605 if (ret->cipher_list == NULL
1606 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0)
1608 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_LIBRARY_HAS_NO_CIPHERS);
1612 ret->param = X509_VERIFY_PARAM_new();
1616 if ((ret->rsa_md5=EVP_get_digestbyname("ssl2-md5")) == NULL)
1618 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL2_MD5_ROUTINES);
1621 if ((ret->md5=EVP_get_digestbyname("ssl3-md5")) == NULL)
1623 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
1626 if ((ret->sha1=EVP_get_digestbyname("ssl3-sha1")) == NULL)
1628 SSLerr(SSL_F_SSL_CTX_NEW,SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
1632 if ((ret->client_CA=sk_X509_NAME_new_null()) == NULL)
1635 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data);
1637 ret->extra_certs=NULL;
1638 ret->comp_methods=SSL_COMP_get_compression_methods();
1640 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
1642 #ifndef OPENSSL_NO_TLSEXT
1643 ret->tlsext_servername_callback = 0;
1644 ret->tlsext_servername_arg = NULL;
1645 /* Setup RFC4507 ticket keys */
1646 if ((RAND_pseudo_bytes(ret->tlsext_tick_key_name, 16) <= 0)
1647 || (RAND_bytes(ret->tlsext_tick_hmac_key, 16) <= 0)
1648 || (RAND_bytes(ret->tlsext_tick_aes_key, 16) <= 0))
1649 ret->options |= SSL_OP_NO_TICKET;
1651 ret->tlsext_status_cb = 0;
1652 ret->tlsext_status_arg = NULL;
1655 #ifndef OPENSSL_NO_PSK
1656 ret->psk_identity_hint=NULL;
1657 ret->psk_client_callback=NULL;
1658 ret->psk_server_callback=NULL;
1660 #ifndef OPENSSL_NO_SRP
1661 SSL_CTX_SRP_CTX_init(ret);
1663 #ifndef OPENSSL_NO_BUF_FREELISTS
1664 ret->freelist_max_len = SSL_MAX_BUF_FREELIST_LEN_DEFAULT;
1665 ret->rbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1666 if (!ret->rbuf_freelist)
1668 ret->rbuf_freelist->chunklen = 0;
1669 ret->rbuf_freelist->len = 0;
1670 ret->rbuf_freelist->head = NULL;
1671 ret->wbuf_freelist = OPENSSL_malloc(sizeof(SSL3_BUF_FREELIST));
1672 if (!ret->wbuf_freelist)
1674 OPENSSL_free(ret->rbuf_freelist);
1677 ret->wbuf_freelist->chunklen = 0;
1678 ret->wbuf_freelist->len = 0;
1679 ret->wbuf_freelist->head = NULL;
1681 #ifndef OPENSSL_NO_ENGINE
1682 ret->client_cert_engine = NULL;
1683 #ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
1684 #define eng_strx(x) #x
1685 #define eng_str(x) eng_strx(x)
1686 /* Use specific client engine automatically... ignore errors */
1689 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1693 ENGINE_load_builtin_engines();
1694 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
1696 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
1701 /* Default is to connect to non-RI servers. When RI is more widely
1702 * deployed might change this.
1704 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
1708 SSLerr(SSL_F_SSL_CTX_NEW,ERR_R_MALLOC_FAILURE);
1710 if (ret != NULL) SSL_CTX_free(ret);
1715 static void SSL_COMP_free(SSL_COMP *comp)
1716 { OPENSSL_free(comp); }
1719 #ifndef OPENSSL_NO_BUF_FREELISTS
1721 ssl_buf_freelist_free(SSL3_BUF_FREELIST *list)
1723 SSL3_BUF_FREELIST_ENTRY *ent, *next;
1724 for (ent = list->head; ent; ent = next)
1733 void SSL_CTX_free(SSL_CTX *a)
1737 if (a == NULL) return;
1739 i=CRYPTO_add(&a->references,-1,CRYPTO_LOCK_SSL_CTX);
1741 REF_PRINT("SSL_CTX",a);
1747 fprintf(stderr,"SSL_CTX_free, bad reference count\n");
1753 X509_VERIFY_PARAM_free(a->param);
1756 * Free internal session cache. However: the remove_cb() may reference
1757 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
1758 * after the sessions were flushed.
1759 * As the ex_data handling routines might also touch the session cache,
1760 * the most secure solution seems to be: empty (flush) the cache, then
1761 * free ex_data, then finally free the cache.
1762 * (See ticket [openssl.org #212].)
1764 if (a->sessions != NULL)
1765 SSL_CTX_flush_sessions(a,0);
1767 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
1769 if (a->sessions != NULL)
1770 lh_SSL_SESSION_free(a->sessions);
1772 if (a->cert_store != NULL)
1773 X509_STORE_free(a->cert_store);
1774 if (a->cipher_list != NULL)
1775 sk_SSL_CIPHER_free(a->cipher_list);
1776 if (a->cipher_list_by_id != NULL)
1777 sk_SSL_CIPHER_free(a->cipher_list_by_id);
1778 if (a->cert != NULL)
1779 ssl_cert_free(a->cert);
1780 if (a->client_CA != NULL)
1781 sk_X509_NAME_pop_free(a->client_CA,X509_NAME_free);
1782 if (a->extra_certs != NULL)
1783 sk_X509_pop_free(a->extra_certs,X509_free);
1784 #if 0 /* This should never be done, since it removes a global database */
1785 if (a->comp_methods != NULL)
1786 sk_SSL_COMP_pop_free(a->comp_methods,SSL_COMP_free);
1788 a->comp_methods = NULL;
1791 #ifndef OPENSSL_NO_PSK
1792 if (a->psk_identity_hint)
1793 OPENSSL_free(a->psk_identity_hint);
1795 #ifndef OPENSSL_NO_SRP
1796 SSL_CTX_SRP_CTX_free(a);
1798 #ifndef OPENSSL_NO_ENGINE
1799 if (a->client_cert_engine)
1800 ENGINE_finish(a->client_cert_engine);
1803 #ifndef OPENSSL_NO_BUF_FREELISTS
1804 if (a->wbuf_freelist)
1805 ssl_buf_freelist_free(a->wbuf_freelist);
1806 if (a->rbuf_freelist)
1807 ssl_buf_freelist_free(a->rbuf_freelist);
1813 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
1815 ctx->default_passwd_callback=cb;
1818 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx,void *u)
1820 ctx->default_passwd_callback_userdata=u;
1823 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg)
1825 ctx->app_verify_callback=cb;
1826 ctx->app_verify_arg=arg;
1829 void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,int (*cb)(int, X509_STORE_CTX *))
1831 ctx->verify_mode=mode;
1832 ctx->default_verify_callback=cb;
1835 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
1837 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
1840 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
1843 int rsa_enc,rsa_tmp,rsa_sign,dh_tmp,dh_rsa,dh_dsa,dsa_sign;
1844 int rsa_enc_export,dh_rsa_export,dh_dsa_export;
1845 int rsa_tmp_export,dh_tmp_export,kl;
1846 unsigned long mask_k,mask_a,emask_k,emask_a;
1847 int have_ecc_cert, ecdh_ok, ecdsa_ok, ecc_pkey_size;
1848 #ifndef OPENSSL_NO_ECDH
1852 EVP_PKEY *ecc_pkey = NULL;
1853 int signature_nid = 0;
1855 if (c == NULL) return;
1857 kl=SSL_C_EXPORT_PKEYLENGTH(cipher);
1859 #ifndef OPENSSL_NO_RSA
1860 rsa_tmp=(c->rsa_tmp != NULL || c->rsa_tmp_cb != NULL);
1861 rsa_tmp_export=(c->rsa_tmp_cb != NULL ||
1862 (rsa_tmp && RSA_size(c->rsa_tmp)*8 <= kl));
1864 rsa_tmp=rsa_tmp_export=0;
1866 #ifndef OPENSSL_NO_DH
1867 dh_tmp=(c->dh_tmp != NULL || c->dh_tmp_cb != NULL);
1868 dh_tmp_export=(c->dh_tmp_cb != NULL ||
1869 (dh_tmp && DH_size(c->dh_tmp)*8 <= kl));
1871 dh_tmp=dh_tmp_export=0;
1874 #ifndef OPENSSL_NO_ECDH
1875 have_ecdh_tmp=(c->ecdh_tmp != NULL || c->ecdh_tmp_cb != NULL);
1877 cpk= &(c->pkeys[SSL_PKEY_RSA_ENC]);
1878 rsa_enc= (cpk->x509 != NULL && cpk->privatekey != NULL);
1879 rsa_enc_export=(rsa_enc && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1880 cpk= &(c->pkeys[SSL_PKEY_RSA_SIGN]);
1881 rsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1882 cpk= &(c->pkeys[SSL_PKEY_DSA_SIGN]);
1883 dsa_sign=(cpk->x509 != NULL && cpk->privatekey != NULL);
1884 cpk= &(c->pkeys[SSL_PKEY_DH_RSA]);
1885 dh_rsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1886 dh_rsa_export=(dh_rsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1887 cpk= &(c->pkeys[SSL_PKEY_DH_DSA]);
1888 /* FIX THIS EAY EAY EAY */
1889 dh_dsa= (cpk->x509 != NULL && cpk->privatekey != NULL);
1890 dh_dsa_export=(dh_dsa && EVP_PKEY_size(cpk->privatekey)*8 <= kl);
1891 cpk= &(c->pkeys[SSL_PKEY_ECC]);
1892 have_ecc_cert= (cpk->x509 != NULL && cpk->privatekey != NULL);
1901 printf("rt=%d rte=%d dht=%d ecdht=%d re=%d ree=%d rs=%d ds=%d dhr=%d dhd=%d\n",
1902 rsa_tmp,rsa_tmp_export,dh_tmp,have_ecdh_tmp,
1903 rsa_enc,rsa_enc_export,rsa_sign,dsa_sign,dh_rsa,dh_dsa);
1906 cpk = &(c->pkeys[SSL_PKEY_GOST01]);
1907 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
1908 mask_k |= SSL_kGOST;
1909 mask_a |= SSL_aGOST01;
1911 cpk = &(c->pkeys[SSL_PKEY_GOST94]);
1912 if (cpk->x509 != NULL && cpk->privatekey !=NULL) {
1913 mask_k |= SSL_kGOST;
1914 mask_a |= SSL_aGOST94;
1917 if (rsa_enc || (rsa_tmp && rsa_sign))
1919 if (rsa_enc_export || (rsa_tmp_export && (rsa_sign || rsa_enc)))
1923 /* The match needs to be both kEDH and aRSA or aDSA, so don't worry */
1924 if ( (dh_tmp || dh_rsa || dh_dsa) &&
1925 (rsa_enc || rsa_sign || dsa_sign))
1927 if ((dh_tmp_export || dh_rsa_export || dh_dsa_export) &&
1928 (rsa_enc || rsa_sign || dsa_sign))
1938 if (dh_rsa) mask_k|=SSL_kDHr;
1939 if (dh_rsa_export) emask_k|=SSL_kDHr;
1941 if (dh_dsa) mask_k|=SSL_kDHd;
1942 if (dh_dsa_export) emask_k|=SSL_kDHd;
1944 if (rsa_enc || rsa_sign)
1959 #ifndef OPENSSL_NO_KRB5
1966 /* An ECC certificate may be usable for ECDH and/or
1967 * ECDSA cipher suites depending on the key usage extension.
1971 /* This call populates extension flags (ex_flags) */
1972 x = (c->pkeys[SSL_PKEY_ECC]).x509;
1973 X509_check_purpose(x, -1, 0);
1974 ecdh_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1975 (x->ex_kusage & X509v3_KU_KEY_AGREEMENT) : 1;
1976 ecdsa_ok = (x->ex_flags & EXFLAG_KUSAGE) ?
1977 (x->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE) : 1;
1978 ecc_pkey = X509_get_pubkey(x);
1979 ecc_pkey_size = (ecc_pkey != NULL) ?
1980 EVP_PKEY_bits(ecc_pkey) : 0;
1981 EVP_PKEY_free(ecc_pkey);
1982 if ((x->sig_alg) && (x->sig_alg->algorithm))
1983 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
1984 #ifndef OPENSSL_NO_ECDH
1987 const char *sig = OBJ_nid2ln(signature_nid);
1994 if (strstr(sig, "WithRSA"))
1998 if (ecc_pkey_size <= 163)
2000 emask_k|=SSL_kECDHr;
2005 if (signature_nid == NID_ecdsa_with_SHA1)
2009 if (ecc_pkey_size <= 163)
2011 emask_k|=SSL_kECDHe;
2017 #ifndef OPENSSL_NO_ECDSA
2021 emask_a|=SSL_aECDSA;
2026 #ifndef OPENSSL_NO_ECDH
2030 emask_k|=SSL_kEECDH;
2034 #ifndef OPENSSL_NO_PSK
2037 emask_k |= SSL_kPSK;
2038 emask_a |= SSL_aPSK;
2043 c->export_mask_k=emask_k;
2044 c->export_mask_a=emask_a;
2048 /* This handy macro borrowed from crypto/x509v3/v3_purp.c */
2049 #define ku_reject(x, usage) \
2050 (((x)->ex_flags & EXFLAG_KUSAGE) && !((x)->ex_kusage & (usage)))
2052 #ifndef OPENSSL_NO_EC
2054 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, const SSL_CIPHER *cs)
2056 unsigned long alg_k, alg_a;
2057 EVP_PKEY *pkey = NULL;
2059 int signature_nid = 0;
2061 alg_k = cs->algorithm_mkey;
2062 alg_a = cs->algorithm_auth;
2064 if (SSL_C_IS_EXPORT(cs))
2066 /* ECDH key length in export ciphers must be <= 163 bits */
2067 pkey = X509_get_pubkey(x);
2068 if (pkey == NULL) return 0;
2069 keysize = EVP_PKEY_bits(pkey);
2070 EVP_PKEY_free(pkey);
2071 if (keysize > 163) return 0;
2074 /* This call populates the ex_flags field correctly */
2075 X509_check_purpose(x, -1, 0);
2076 if ((x->sig_alg) && (x->sig_alg->algorithm))
2077 signature_nid = OBJ_obj2nid(x->sig_alg->algorithm);
2078 if (alg_k & SSL_kECDHe || alg_k & SSL_kECDHr)
2080 /* key usage, if present, must allow key agreement */
2081 if (ku_reject(x, X509v3_KU_KEY_AGREEMENT))
2083 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_KEY_AGREEMENT);
2086 if (alg_k & SSL_kECDHe)
2088 /* signature alg must be ECDSA */
2089 if (signature_nid != NID_ecdsa_with_SHA1)
2091 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_SHA1_SIGNATURE);
2095 if (alg_k & SSL_kECDHr)
2097 /* signature alg must be RSA */
2099 const char *sig = OBJ_nid2ln(signature_nid);
2105 if (strstr(sig, "WithRSA") == NULL)
2107 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_SHOULD_HAVE_RSA_SIGNATURE);
2112 if (alg_a & SSL_aECDSA)
2114 /* key usage, if present, must allow signing */
2115 if (ku_reject(x, X509v3_KU_DIGITAL_SIGNATURE))
2117 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
2122 return 1; /* all checks are ok */
2127 /* THIS NEEDS CLEANING UP */
2128 X509 *ssl_get_server_send_cert(SSL *s)
2130 unsigned long alg_k,alg_a;
2135 ssl_set_cert_masks(c, s->s3->tmp.new_cipher);
2137 alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
2138 alg_a = s->s3->tmp.new_cipher->algorithm_auth;
2140 if (alg_k & (SSL_kECDHr|SSL_kECDHe))
2142 /* we don't need to look at SSL_kEECDH
2143 * since no certificate is needed for
2144 * anon ECDH and for authenticated
2145 * EECDH, the check for the auth
2146 * algorithm will set i correctly
2147 * NOTE: For ECDH-RSA, we need an ECC
2148 * not an RSA cert but for EECDH-RSA
2149 * we need an RSA cert. Placing the
2150 * checks for SSL_kECDH before RSA
2151 * checks ensures the correct cert is chosen.
2155 else if (alg_a & SSL_aECDSA)
2159 else if (alg_k & SSL_kDHr)
2161 else if (alg_k & SSL_kDHd)
2163 else if (alg_a & SSL_aDSS)
2164 i=SSL_PKEY_DSA_SIGN;
2165 else if (alg_a & SSL_aRSA)
2167 if (c->pkeys[SSL_PKEY_RSA_ENC].x509 == NULL)
2168 i=SSL_PKEY_RSA_SIGN;
2172 else if (alg_a & SSL_aKRB5)
2174 /* VRS something else here? */
2177 else if (alg_a & SSL_aGOST94)
2179 else if (alg_a & SSL_aGOST01)
2181 else /* if (alg_a & SSL_aNULL) */
2183 SSLerr(SSL_F_SSL_GET_SERVER_SEND_CERT,ERR_R_INTERNAL_ERROR);
2186 if (c->pkeys[i].x509 == NULL) return(NULL);
2188 return(c->pkeys[i].x509);
2191 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *cipher)
2193 unsigned long alg_a;
2196 alg_a = cipher->algorithm_auth;
2199 if ((alg_a & SSL_aDSS) &&
2200 (c->pkeys[SSL_PKEY_DSA_SIGN].privatekey != NULL))
2201 return(c->pkeys[SSL_PKEY_DSA_SIGN].privatekey);
2202 else if (alg_a & SSL_aRSA)
2204 if (c->pkeys[SSL_PKEY_RSA_SIGN].privatekey != NULL)
2205 return(c->pkeys[SSL_PKEY_RSA_SIGN].privatekey);
2206 else if (c->pkeys[SSL_PKEY_RSA_ENC].privatekey != NULL)
2207 return(c->pkeys[SSL_PKEY_RSA_ENC].privatekey);
2211 else if ((alg_a & SSL_aECDSA) &&
2212 (c->pkeys[SSL_PKEY_ECC].privatekey != NULL))
2213 return(c->pkeys[SSL_PKEY_ECC].privatekey);
2214 else /* if (alg_a & SSL_aNULL) */
2216 SSLerr(SSL_F_SSL_GET_SIGN_PKEY,ERR_R_INTERNAL_ERROR);
2221 void ssl_update_cache(SSL *s,int mode)
2225 /* If the session_id_length is 0, we are not supposed to cache it,
2226 * and it would be rather hard to do anyway :-) */
2227 if (s->session->session_id_length == 0) return;
2229 i=s->session_ctx->session_cache_mode;
2230 if ((i & mode) && (!s->hit)
2231 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE)
2232 || SSL_CTX_add_session(s->session_ctx,s->session))
2233 && (s->session_ctx->new_session_cb != NULL))
2235 CRYPTO_add(&s->session->references,1,CRYPTO_LOCK_SSL_SESSION);
2236 if (!s->session_ctx->new_session_cb(s,s->session))
2237 SSL_SESSION_free(s->session);
2240 /* auto flush every 255 connections */
2241 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) &&
2242 ((i & mode) == mode))
2244 if ( (((mode & SSL_SESS_CACHE_CLIENT)
2245 ?s->session_ctx->stats.sess_connect_good
2246 :s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff)
2248 SSL_CTX_flush_sessions(s->session_ctx,(unsigned long)time(NULL));
2253 const SSL_METHOD *SSL_get_ssl_method(SSL *s)
2258 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
2263 if (s->method != meth)
2265 if (s->handshake_func != NULL)
2266 conn=(s->handshake_func == s->method->ssl_connect);
2268 if (s->method->version == meth->version)
2272 s->method->ssl_free(s);
2274 ret=s->method->ssl_new(s);
2278 s->handshake_func=meth->ssl_connect;
2280 s->handshake_func=meth->ssl_accept;
2285 int SSL_get_error(const SSL *s,int i)
2291 if (i > 0) return(SSL_ERROR_NONE);
2293 /* Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake
2294 * etc, where we do encode the error */
2295 if ((l=ERR_peek_error()) != 0)
2297 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
2298 return(SSL_ERROR_SYSCALL);
2300 return(SSL_ERROR_SSL);
2303 if ((i < 0) && SSL_want_read(s))
2305 bio=SSL_get_rbio(s);
2306 if (BIO_should_read(bio))
2307 return(SSL_ERROR_WANT_READ);
2308 else if (BIO_should_write(bio))
2309 /* This one doesn't make too much sense ... We never try
2310 * to write to the rbio, and an application program where
2311 * rbio and wbio are separate couldn't even know what it
2313 * However if we ever set s->rwstate incorrectly
2314 * (so that we have SSL_want_read(s) instead of
2315 * SSL_want_write(s)) and rbio and wbio *are* the same,
2316 * this test works around that bug; so it might be safer
2318 return(SSL_ERROR_WANT_WRITE);
2319 else if (BIO_should_io_special(bio))
2321 reason=BIO_get_retry_reason(bio);
2322 if (reason == BIO_RR_CONNECT)
2323 return(SSL_ERROR_WANT_CONNECT);
2324 else if (reason == BIO_RR_ACCEPT)
2325 return(SSL_ERROR_WANT_ACCEPT);
2327 return(SSL_ERROR_SYSCALL); /* unknown */
2331 if ((i < 0) && SSL_want_write(s))
2333 bio=SSL_get_wbio(s);
2334 if (BIO_should_write(bio))
2335 return(SSL_ERROR_WANT_WRITE);
2336 else if (BIO_should_read(bio))
2337 /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
2338 return(SSL_ERROR_WANT_READ);
2339 else if (BIO_should_io_special(bio))
2341 reason=BIO_get_retry_reason(bio);
2342 if (reason == BIO_RR_CONNECT)
2343 return(SSL_ERROR_WANT_CONNECT);
2344 else if (reason == BIO_RR_ACCEPT)
2345 return(SSL_ERROR_WANT_ACCEPT);
2347 return(SSL_ERROR_SYSCALL);
2350 if ((i < 0) && SSL_want_x509_lookup(s))
2352 return(SSL_ERROR_WANT_X509_LOOKUP);
2357 if (s->version == SSL2_VERSION)
2359 /* assume it is the socket being closed */
2360 return(SSL_ERROR_ZERO_RETURN);
2364 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
2365 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
2366 return(SSL_ERROR_ZERO_RETURN);
2369 return(SSL_ERROR_SYSCALL);
2372 int SSL_do_handshake(SSL *s)
2376 if (s->handshake_func == NULL)
2378 SSLerr(SSL_F_SSL_DO_HANDSHAKE,SSL_R_CONNECTION_TYPE_NOT_SET);
2382 s->method->ssl_renegotiate_check(s);
2384 if (SSL_in_init(s) || SSL_in_before(s))
2386 ret=s->handshake_func(s);
2391 /* For the next 2 functions, SSL_clear() sets shutdown and so
2392 * one of these calls will reset it */
2393 void SSL_set_accept_state(SSL *s)
2397 s->state=SSL_ST_ACCEPT|SSL_ST_BEFORE;
2398 s->handshake_func=s->method->ssl_accept;
2399 /* clear the current cipher */
2400 ssl_clear_cipher_ctx(s);
2401 ssl_clear_hash_ctx(&s->read_hash);
2402 ssl_clear_hash_ctx(&s->write_hash);
2405 void SSL_set_connect_state(SSL *s)
2409 s->state=SSL_ST_CONNECT|SSL_ST_BEFORE;
2410 s->handshake_func=s->method->ssl_connect;
2411 /* clear the current cipher */
2412 ssl_clear_cipher_ctx(s);
2413 ssl_clear_hash_ctx(&s->read_hash);
2414 ssl_clear_hash_ctx(&s->write_hash);
2417 int ssl_undefined_function(SSL *s)
2419 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2423 int ssl_undefined_void_function(void)
2425 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2429 int ssl_undefined_const_function(const SSL *s)
2431 SSLerr(SSL_F_SSL_UNDEFINED_CONST_FUNCTION,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2435 SSL_METHOD *ssl_bad_method(int ver)
2437 SSLerr(SSL_F_SSL_BAD_METHOD,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2441 const char *SSL_get_version(const SSL *s)
2443 if (s->version == TLS1_1_VERSION)
2445 if (s->version == TLS1_VERSION)
2447 else if (s->version == SSL3_VERSION)
2449 else if (s->version == SSL2_VERSION)
2455 SSL *SSL_dup(SSL *s)
2457 STACK_OF(X509_NAME) *sk;
2462 if ((ret=SSL_new(SSL_get_SSL_CTX(s))) == NULL)
2465 ret->version = s->version;
2466 ret->type = s->type;
2467 ret->method = s->method;
2469 if (s->session != NULL)
2471 /* This copies session-id, SSL_METHOD, sid_ctx, and 'cert' */
2472 SSL_copy_session_id(ret,s);
2476 /* No session has been established yet, so we have to expect
2477 * that s->cert or ret->cert will be changed later --
2478 * they should not both point to the same object,
2479 * and thus we can't use SSL_copy_session_id. */
2481 ret->method->ssl_free(ret);
2482 ret->method = s->method;
2483 ret->method->ssl_new(ret);
2485 if (s->cert != NULL)
2487 if (ret->cert != NULL)
2489 ssl_cert_free(ret->cert);
2491 ret->cert = ssl_cert_dup(s->cert);
2492 if (ret->cert == NULL)
2496 SSL_set_session_id_context(ret,
2497 s->sid_ctx, s->sid_ctx_length);
2500 ret->options=s->options;
2502 SSL_set_max_cert_list(ret,SSL_get_max_cert_list(s));
2503 SSL_set_read_ahead(ret,SSL_get_read_ahead(s));
2504 ret->msg_callback = s->msg_callback;
2505 ret->msg_callback_arg = s->msg_callback_arg;
2506 SSL_set_verify(ret,SSL_get_verify_mode(s),
2507 SSL_get_verify_callback(s));
2508 SSL_set_verify_depth(ret,SSL_get_verify_depth(s));
2509 ret->generate_session_id = s->generate_session_id;
2511 SSL_set_info_callback(ret,SSL_get_info_callback(s));
2513 ret->debug=s->debug;
2515 /* copy app data, a little dangerous perhaps */
2516 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
2519 /* setup rbio, and wbio */
2520 if (s->rbio != NULL)
2522 if (!BIO_dup_state(s->rbio,(char *)&ret->rbio))
2525 if (s->wbio != NULL)
2527 if (s->wbio != s->rbio)
2529 if (!BIO_dup_state(s->wbio,(char *)&ret->wbio))
2533 ret->wbio=ret->rbio;
2535 ret->rwstate = s->rwstate;
2536 ret->in_handshake = s->in_handshake;
2537 ret->handshake_func = s->handshake_func;
2538 ret->server = s->server;
2539 ret->renegotiate = s->renegotiate;
2540 ret->new_session = s->new_session;
2541 ret->quiet_shutdown = s->quiet_shutdown;
2542 ret->shutdown=s->shutdown;
2543 ret->state=s->state; /* SSL_dup does not really work at any state, though */
2544 ret->rstate=s->rstate;
2545 ret->init_num = 0; /* would have to copy ret->init_buf, ret->init_msg, ret->init_num, ret->init_off */
2548 X509_VERIFY_PARAM_inherit(ret->param, s->param);
2550 /* dup the cipher_list and cipher_list_by_id stacks */
2551 if (s->cipher_list != NULL)
2553 if ((ret->cipher_list=sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
2556 if (s->cipher_list_by_id != NULL)
2557 if ((ret->cipher_list_by_id=sk_SSL_CIPHER_dup(s->cipher_list_by_id))
2561 /* Dup the client_CA list */
2562 if (s->client_CA != NULL)
2564 if ((sk=sk_X509_NAME_dup(s->client_CA)) == NULL) goto err;
2566 for (i=0; i<sk_X509_NAME_num(sk); i++)
2568 xn=sk_X509_NAME_value(sk,i);
2569 if (sk_X509_NAME_set(sk,i,X509_NAME_dup(xn)) == NULL)
2580 if (ret != NULL) SSL_free(ret);
2586 void ssl_clear_cipher_ctx(SSL *s)
2588 if (s->enc_read_ctx != NULL)
2590 EVP_CIPHER_CTX_cleanup(s->enc_read_ctx);
2591 OPENSSL_free(s->enc_read_ctx);
2592 s->enc_read_ctx=NULL;
2594 if (s->enc_write_ctx != NULL)
2596 EVP_CIPHER_CTX_cleanup(s->enc_write_ctx);
2597 OPENSSL_free(s->enc_write_ctx);
2598 s->enc_write_ctx=NULL;
2600 #ifndef OPENSSL_NO_COMP
2601 if (s->expand != NULL)
2603 COMP_CTX_free(s->expand);
2606 if (s->compress != NULL)
2608 COMP_CTX_free(s->compress);
2614 /* Fix this function so that it takes an optional type parameter */
2615 X509 *SSL_get_certificate(const SSL *s)
2617 if (s->cert != NULL)
2618 return(s->cert->key->x509);
2623 /* Fix this function so that it takes an optional type parameter */
2624 EVP_PKEY *SSL_get_privatekey(SSL *s)
2626 if (s->cert != NULL)
2627 return(s->cert->key->privatekey);
2632 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
2634 if ((s->session != NULL) && (s->session->cipher != NULL))
2635 return(s->session->cipher);
2638 #ifdef OPENSSL_NO_COMP
2639 const void *SSL_get_current_compression(SSL *s)
2643 const void *SSL_get_current_expansion(SSL *s)
2649 const COMP_METHOD *SSL_get_current_compression(SSL *s)
2651 if (s->compress != NULL)
2652 return(s->compress->meth);
2656 const COMP_METHOD *SSL_get_current_expansion(SSL *s)
2658 if (s->expand != NULL)
2659 return(s->expand->meth);
2664 int ssl_init_wbio_buffer(SSL *s,int push)
2668 if (s->bbio == NULL)
2670 bbio=BIO_new(BIO_f_buffer());
2671 if (bbio == NULL) return(0);
2677 if (s->bbio == s->wbio)
2678 s->wbio=BIO_pop(s->wbio);
2680 (void)BIO_reset(bbio);
2681 /* if (!BIO_set_write_buffer_size(bbio,16*1024)) */
2682 if (!BIO_set_read_buffer_size(bbio,1))
2684 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER,ERR_R_BUF_LIB);
2689 if (s->wbio != bbio)
2690 s->wbio=BIO_push(bbio,s->wbio);
2694 if (s->wbio == bbio)
2695 s->wbio=BIO_pop(bbio);
2700 void ssl_free_wbio_buffer(SSL *s)
2702 if (s->bbio == NULL) return;
2704 if (s->bbio == s->wbio)
2706 /* remove buffering */
2707 s->wbio=BIO_pop(s->wbio);
2708 #ifdef REF_CHECK /* not the usual REF_CHECK, but this avoids adding one more preprocessor symbol */
2709 assert(s->wbio != NULL);
2716 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx,int mode)
2718 ctx->quiet_shutdown=mode;
2721 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
2723 return(ctx->quiet_shutdown);
2726 void SSL_set_quiet_shutdown(SSL *s,int mode)
2728 s->quiet_shutdown=mode;
2731 int SSL_get_quiet_shutdown(const SSL *s)
2733 return(s->quiet_shutdown);
2736 void SSL_set_shutdown(SSL *s,int mode)
2741 int SSL_get_shutdown(const SSL *s)
2743 return(s->shutdown);
2746 int SSL_version(const SSL *s)
2751 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
2756 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx)
2758 if (ssl->ctx == ctx)
2760 #ifndef OPENSSL_NO_TLSEXT
2762 ctx = ssl->initial_ctx;
2764 if (ssl->cert != NULL)
2765 ssl_cert_free(ssl->cert);
2766 ssl->cert = ssl_cert_dup(ctx->cert);
2767 CRYPTO_add(&ctx->references,1,CRYPTO_LOCK_SSL_CTX);
2768 if (ssl->ctx != NULL)
2769 SSL_CTX_free(ssl->ctx); /* decrement reference count */
2774 #ifndef OPENSSL_NO_STDIO
2775 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
2777 return(X509_STORE_set_default_paths(ctx->cert_store));
2780 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
2783 return(X509_STORE_load_locations(ctx->cert_store,CAfile,CApath));
2787 void SSL_set_info_callback(SSL *ssl,
2788 void (*cb)(const SSL *ssl,int type,int val))
2790 ssl->info_callback=cb;
2793 /* One compiler (Diab DCC) doesn't like argument names in returned
2794 function pointer. */
2795 void (*SSL_get_info_callback(const SSL *ssl))(const SSL * /*ssl*/,int /*type*/,int /*val*/)
2797 return ssl->info_callback;
2800 int SSL_state(const SSL *ssl)
2805 void SSL_set_verify_result(SSL *ssl,long arg)
2807 ssl->verify_result=arg;
2810 long SSL_get_verify_result(const SSL *ssl)
2812 return(ssl->verify_result);
2815 int SSL_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2816 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2818 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL, argl, argp,
2819 new_func, dup_func, free_func);
2822 int SSL_set_ex_data(SSL *s,int idx,void *arg)
2824 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2827 void *SSL_get_ex_data(const SSL *s,int idx)
2829 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2832 int SSL_CTX_get_ex_new_index(long argl,void *argp,CRYPTO_EX_new *new_func,
2833 CRYPTO_EX_dup *dup_func,CRYPTO_EX_free *free_func)
2835 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_CTX, argl, argp,
2836 new_func, dup_func, free_func);
2839 int SSL_CTX_set_ex_data(SSL_CTX *s,int idx,void *arg)
2841 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
2844 void *SSL_CTX_get_ex_data(const SSL_CTX *s,int idx)
2846 return(CRYPTO_get_ex_data(&s->ex_data,idx));
2854 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
2856 return(ctx->cert_store);
2859 void SSL_CTX_set_cert_store(SSL_CTX *ctx,X509_STORE *store)
2861 if (ctx->cert_store != NULL)
2862 X509_STORE_free(ctx->cert_store);
2863 ctx->cert_store=store;
2866 int SSL_want(const SSL *s)
2872 * \brief Set the callback for generating temporary RSA keys.
2873 * \param ctx the SSL context.
2874 * \param cb the callback
2877 #ifndef OPENSSL_NO_RSA
2878 void SSL_CTX_set_tmp_rsa_callback(SSL_CTX *ctx,RSA *(*cb)(SSL *ssl,
2882 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2885 void SSL_set_tmp_rsa_callback(SSL *ssl,RSA *(*cb)(SSL *ssl,
2889 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_RSA_CB,(void (*)(void))cb);
2895 * \brief The RSA temporary key callback function.
2896 * \param ssl the SSL session.
2897 * \param is_export \c TRUE if the temp RSA key is for an export ciphersuite.
2898 * \param keylength if \c is_export is \c TRUE, then \c keylength is the size
2899 * of the required key in bits.
2900 * \return the temporary RSA key.
2901 * \sa SSL_CTX_set_tmp_rsa_callback, SSL_set_tmp_rsa_callback
2904 RSA *cb(SSL *ssl,int is_export,int keylength)
2909 * \brief Set the callback for generating temporary DH keys.
2910 * \param ctx the SSL context.
2911 * \param dh the callback
2914 #ifndef OPENSSL_NO_DH
2915 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,DH *(*dh)(SSL *ssl,int is_export,
2918 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2921 void SSL_set_tmp_dh_callback(SSL *ssl,DH *(*dh)(SSL *ssl,int is_export,
2924 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_DH_CB,(void (*)(void))dh);
2928 #ifndef OPENSSL_NO_ECDH
2929 void SSL_CTX_set_tmp_ecdh_callback(SSL_CTX *ctx,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2932 SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2935 void SSL_set_tmp_ecdh_callback(SSL *ssl,EC_KEY *(*ecdh)(SSL *ssl,int is_export,
2938 SSL_callback_ctrl(ssl,SSL_CTRL_SET_TMP_ECDH_CB,(void (*)(void))ecdh);
2942 #ifndef OPENSSL_NO_PSK
2943 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
2945 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2947 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2950 if (ctx->psk_identity_hint != NULL)
2951 OPENSSL_free(ctx->psk_identity_hint);
2952 if (identity_hint != NULL)
2954 ctx->psk_identity_hint = BUF_strdup(identity_hint);
2955 if (ctx->psk_identity_hint == NULL)
2959 ctx->psk_identity_hint = NULL;
2963 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
2968 if (s->session == NULL)
2969 return 1; /* session not created yet, ignored */
2971 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN)
2973 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
2976 if (s->session->psk_identity_hint != NULL)
2977 OPENSSL_free(s->session->psk_identity_hint);
2978 if (identity_hint != NULL)
2980 s->session->psk_identity_hint = BUF_strdup(identity_hint);
2981 if (s->session->psk_identity_hint == NULL)
2985 s->session->psk_identity_hint = NULL;
2989 const char *SSL_get_psk_identity_hint(const SSL *s)
2991 if (s == NULL || s->session == NULL)
2993 return(s->session->psk_identity_hint);
2996 const char *SSL_get_psk_identity(const SSL *s)
2998 if (s == NULL || s->session == NULL)
3000 return(s->session->psk_identity);
3003 void SSL_set_psk_client_callback(SSL *s,
3004 unsigned int (*cb)(SSL *ssl, const char *hint,
3005 char *identity, unsigned int max_identity_len, unsigned char *psk,
3006 unsigned int max_psk_len))
3008 s->psk_client_callback = cb;
3011 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx,
3012 unsigned int (*cb)(SSL *ssl, const char *hint,
3013 char *identity, unsigned int max_identity_len, unsigned char *psk,
3014 unsigned int max_psk_len))
3016 ctx->psk_client_callback = cb;
3019 void SSL_set_psk_server_callback(SSL *s,
3020 unsigned int (*cb)(SSL *ssl, const char *identity,
3021 unsigned char *psk, unsigned int max_psk_len))
3023 s->psk_server_callback = cb;
3026 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
3027 unsigned int (*cb)(SSL *ssl, const char *identity,
3028 unsigned char *psk, unsigned int max_psk_len))
3030 ctx->psk_server_callback = cb;
3034 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))
3036 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3038 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))
3040 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
3043 /* Allocates new EVP_MD_CTX and sets pointer to it into given pointer
3044 * vairable, freeing EVP_MD_CTX previously stored in that variable, if
3045 * any. If EVP_MD pointer is passed, initializes ctx with this md
3046 * Returns newly allocated ctx;
3049 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md)
3051 ssl_clear_hash_ctx(hash);
3052 *hash = EVP_MD_CTX_create();
3053 if (md) EVP_DigestInit_ex(*hash,md,NULL);
3056 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
3059 if (*hash) EVP_MD_CTX_destroy(*hash);
3063 #if defined(_WINDLL) && defined(OPENSSL_SYS_WIN16)
3064 #include "../crypto/bio/bss_file.c"
3067 IMPLEMENT_STACK_OF(SSL_CIPHER)
3068 IMPLEMENT_STACK_OF(SSL_COMP)
3069 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,