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1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2  * All rights reserved.
3  *
4  * This package is an SSL implementation written
5  * by Eric Young (eay@cryptsoft.com).
6  * The implementation was written so as to conform with Netscapes SSL.
7  *
8  * This library is free for commercial and non-commercial use as long as
9  * the following conditions are aheared to.  The following conditions
10  * apply to all code found in this distribution, be it the RC4, RSA,
11  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
12  * included with this distribution is covered by the same copyright terms
13  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
14  *
15  * Copyright remains Eric Young's, and as such any Copyright notices in
16  * the code are not to be removed.
17  * If this package is used in a product, Eric Young should be given attribution
18  * as the author of the parts of the library used.
19  * This can be in the form of a textual message at program startup or
20  * in documentation (online or textual) provided with the package.
21  *
22  * Redistribution and use in source and binary forms, with or without
23  * modification, are permitted provided that the following conditions
24  * are met:
25  * 1. Redistributions of source code must retain the copyright
26  *    notice, this list of conditions and the following disclaimer.
27  * 2. Redistributions in binary form must reproduce the above copyright
28  *    notice, this list of conditions and the following disclaimer in the
29  *    documentation and/or other materials provided with the distribution.
30  * 3. All advertising materials mentioning features or use of this software
31  *    must display the following acknowledgement:
32  *    "This product includes cryptographic software written by
33  *     Eric Young (eay@cryptsoft.com)"
34  *    The word 'cryptographic' can be left out if the rouines from the library
35  *    being used are not cryptographic related :-).
36  * 4. If you include any Windows specific code (or a derivative thereof) from
37  *    the apps directory (application code) you must include an acknowledgement:
38  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39  *
40  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50  * SUCH DAMAGE.
51  *
52  * The licence and distribution terms for any publically available version or
53  * derivative of this code cannot be changed.  i.e. this code cannot simply be
54  * copied and put under another distribution licence
55  * [including the GNU Public Licence.]
56  */
57 /* ====================================================================
58  * Copyright (c) 1998-2007 The OpenSSL Project.  All rights reserved.
59  *
60  * Redistribution and use in source and binary forms, with or without
61  * modification, are permitted provided that the following conditions
62  * are met:
63  *
64  * 1. Redistributions of source code must retain the above copyright
65  *    notice, this list of conditions and the following disclaimer.
66  *
67  * 2. Redistributions in binary form must reproduce the above copyright
68  *    notice, this list of conditions and the following disclaimer in
69  *    the documentation and/or other materials provided with the
70  *    distribution.
71  *
72  * 3. All advertising materials mentioning features or use of this
73  *    software must display the following acknowledgment:
74  *    "This product includes software developed by the OpenSSL Project
75  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
76  *
77  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
78  *    endorse or promote products derived from this software without
79  *    prior written permission. For written permission, please contact
80  *    openssl-core@openssl.org.
81  *
82  * 5. Products derived from this software may not be called "OpenSSL"
83  *    nor may "OpenSSL" appear in their names without prior written
84  *    permission of the OpenSSL Project.
85  *
86  * 6. Redistributions of any form whatsoever must retain the following
87  *    acknowledgment:
88  *    "This product includes software developed by the OpenSSL Project
89  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
90  *
91  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
92  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
93  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
94  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
95  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
96  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
97  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
98  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
99  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
100  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
101  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
102  * OF THE POSSIBILITY OF SUCH DAMAGE.
103  * ====================================================================
104  *
105  * This product includes cryptographic software written by Eric Young
106  * (eay@cryptsoft.com).  This product includes software written by Tim
107  * Hudson (tjh@cryptsoft.com).
108  *
109  */
110 /* ====================================================================
111  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
112  *
113  * Portions of the attached software ("Contribution") are developed by
114  * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project.
115  *
116  * The Contribution is licensed pursuant to the OpenSSL open source
117  * license provided above.
118  *
119  * ECC cipher suite support in OpenSSL originally written by
120  * Vipul Gupta and Sumit Gupta of Sun Microsystems Laboratories.
121  *
122  */
123 /* ====================================================================
124  * Copyright 2005 Nokia. All rights reserved.
125  *
126  * The portions of the attached software ("Contribution") is developed by
127  * Nokia Corporation and is licensed pursuant to the OpenSSL open source
128  * license.
129  *
130  * The Contribution, originally written by Mika Kousa and Pasi Eronen of
131  * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
132  * support (see RFC 4279) to OpenSSL.
133  *
134  * No patent licenses or other rights except those expressly stated in
135  * the OpenSSL open source license shall be deemed granted or received
136  * expressly, by implication, estoppel, or otherwise.
137  *
138  * No assurances are provided by Nokia that the Contribution does not
139  * infringe the patent or other intellectual property rights of any third
140  * party or that the license provides you with all the necessary rights
141  * to make use of the Contribution.
142  *
143  * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
144  * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
145  * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
146  * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
147  * OTHERWISE. */
148 
149 #include <openssl/ssl.h>
150 
151 #include <assert.h>
152 #include <string.h>
153 
154 #include <openssl/buf.h>
155 #include <openssl/digest.h>
156 #include <openssl/err.h>
157 #include <openssl/md5.h>
158 #include <openssl/mem.h>
159 #include <openssl/nid.h>
160 
161 #include "../crypto/internal.h"
162 #include "internal.h"
163 
164 
165 namespace bssl {
166 
SSL3_STATE()167 SSL3_STATE::SSL3_STATE()
168     : skip_early_data(false),
169       have_version(false),
170       v2_hello_done(false),
171       is_v2_hello(false),
172       has_message(false),
173       initial_handshake_complete(false),
174       session_reused(false),
175       send_connection_binding(false),
176       tlsext_channel_id_valid(false),
177       key_update_pending(false),
178       wpend_pending(false),
179       early_data_accepted(false),
180       draft_downgrade(false) {}
181 
~SSL3_STATE()182 SSL3_STATE::~SSL3_STATE() {}
183 
ssl3_new(SSL * ssl)184 bool ssl3_new(SSL *ssl) {
185   UniquePtr<SSL3_STATE> s3 = MakeUnique<SSL3_STATE>();
186   if (!s3) {
187     return false;
188   }
189 
190   s3->aead_read_ctx = SSLAEADContext::CreateNullCipher(SSL_is_dtls(ssl));
191   s3->aead_write_ctx = SSLAEADContext::CreateNullCipher(SSL_is_dtls(ssl));
192   s3->hs = ssl_handshake_new(ssl);
193   if (!s3->aead_read_ctx || !s3->aead_write_ctx || !s3->hs) {
194     return false;
195   }
196 
197   ssl->s3 = s3.release();
198 
199   // Set the version to the highest supported version.
200   //
201   // TODO(davidben): Move this field into |s3|, have it store the normalized
202   // protocol version, and implement this pre-negotiation quirk in |SSL_version|
203   // at the API boundary rather than in internal state.
204   ssl->version = TLS1_2_VERSION;
205   return true;
206 }
207 
ssl3_free(SSL * ssl)208 void ssl3_free(SSL *ssl) {
209   if (ssl == NULL || ssl->s3 == NULL) {
210     return;
211   }
212 
213   Delete(ssl->s3);
214   ssl->s3 = NULL;
215 }
216 
ssl_get_cipher_preferences(const SSL * ssl)217 const struct ssl_cipher_preference_list_st *ssl_get_cipher_preferences(
218     const SSL *ssl) {
219   if (ssl->cipher_list != NULL) {
220     return ssl->cipher_list;
221   }
222 
223   return ssl->ctx->cipher_list;
224 }
225 
226 }  // namespace bssl
227