1 /*
2 * DTLS implementation written by Nagendra Modadugu
3 * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
4 */
5 /* ====================================================================
6 * Copyright (c) 1999-2005 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * openssl-core@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com). */
56
57 #include <openssl/ssl.h>
58
59 #include "internal.h"
60
61
62 static const SSL_PROTOCOL_METHOD DTLS_protocol_method = {
63 1 /* is_dtls */,
64 dtls1_new,
65 dtls1_free,
66 dtls1_accept,
67 dtls1_connect,
68 dtls1_get_message,
69 dtls1_read_app_data,
70 dtls1_read_change_cipher_spec,
71 dtls1_read_close_notify,
72 dtls1_write_app_data,
73 dtls1_dispatch_alert,
74 dtls1_supports_cipher,
75 DTLS1_HM_HEADER_LENGTH,
76 dtls1_set_handshake_header,
77 dtls1_handshake_write,
78 };
79
DTLS_method(void)80 const SSL_METHOD *DTLS_method(void) {
81 static const SSL_METHOD method = {
82 0,
83 &DTLS_protocol_method,
84 };
85 return &method;
86 }
87
88 /* Legacy version-locked methods. */
89
DTLSv1_2_method(void)90 const SSL_METHOD *DTLSv1_2_method(void) {
91 static const SSL_METHOD method = {
92 DTLS1_2_VERSION,
93 &DTLS_protocol_method,
94 };
95 return &method;
96 }
97
DTLSv1_method(void)98 const SSL_METHOD *DTLSv1_method(void) {
99 static const SSL_METHOD method = {
100 DTLS1_VERSION,
101 &DTLS_protocol_method,
102 };
103 return &method;
104 }
105
106 /* Legacy side-specific methods. */
107
DTLSv1_2_server_method(void)108 const SSL_METHOD *DTLSv1_2_server_method(void) {
109 return DTLSv1_2_method();
110 }
111
DTLSv1_server_method(void)112 const SSL_METHOD *DTLSv1_server_method(void) {
113 return DTLSv1_method();
114 }
115
DTLSv1_2_client_method(void)116 const SSL_METHOD *DTLSv1_2_client_method(void) {
117 return DTLSv1_2_method();
118 }
119
DTLSv1_client_method(void)120 const SSL_METHOD *DTLSv1_client_method(void) {
121 return DTLSv1_method();
122 }
123
DTLS_server_method(void)124 const SSL_METHOD *DTLS_server_method(void) {
125 return DTLS_method();
126 }
127
DTLS_client_method(void)128 const SSL_METHOD *DTLS_client_method(void) {
129 return DTLS_method();
130 }
131