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      1 /* ssl/d1_meth.h */
      2 /*
      3  * DTLS implementation written by Nagendra Modadugu
      4  * (nagendra (at) cs.stanford.edu) for the OpenSSL project 2005.
      5  */
      6 /* ====================================================================
      7  * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  *
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  *
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in
     18  *    the documentation and/or other materials provided with the
     19  *    distribution.
     20  *
     21  * 3. All advertising materials mentioning features or use of this
     22  *    software must display the following acknowledgment:
     23  *    "This product includes software developed by the OpenSSL Project
     24  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
     25  *
     26  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
     27  *    endorse or promote products derived from this software without
     28  *    prior written permission. For written permission, please contact
     29  *    openssl-core (at) OpenSSL.org.
     30  *
     31  * 5. Products derived from this software may not be called "OpenSSL"
     32  *    nor may "OpenSSL" appear in their names without prior written
     33  *    permission of the OpenSSL Project.
     34  *
     35  * 6. Redistributions of any form whatsoever must retain the following
     36  *    acknowledgment:
     37  *    "This product includes software developed by the OpenSSL Project
     38  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
     39  *
     40  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
     41  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     43  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
     44  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     45  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     46  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     47  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     49  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
     51  * OF THE POSSIBILITY OF SUCH DAMAGE.
     52  * ====================================================================
     53  *
     54  * This product includes cryptographic software written by Eric Young
     55  * (eay (at) cryptsoft.com).  This product includes software written by Tim
     56  * Hudson (tjh (at) cryptsoft.com). */
     57 
     58 #include "internal.h"
     59 
     60 
     61 static const SSL_PROTOCOL_METHOD DTLS_protocol_method = {
     62     1 /* is_dtls */,
     63     dtls1_new,
     64     dtls1_free,
     65     dtls1_accept,
     66     dtls1_connect,
     67     dtls1_get_message,
     68     dtls1_read_app_data,
     69     dtls1_read_close_notify,
     70     dtls1_write_app_data,
     71     dtls1_dispatch_alert,
     72     ssl3_ctrl,
     73     ssl3_ctx_ctrl,
     74     dtls1_supports_cipher,
     75     DTLS1_HM_HEADER_LENGTH,
     76     dtls1_set_handshake_header,
     77     dtls1_handshake_write,
     78 };
     79 
     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 
     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 
     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 
    108 const SSL_METHOD *DTLSv1_2_server_method(void) {
    109   return DTLSv1_2_method();
    110 }
    111 
    112 const SSL_METHOD *DTLSv1_server_method(void) {
    113   return DTLSv1_method();
    114 }
    115 
    116 const SSL_METHOD *DTLSv1_2_client_method(void) {
    117   return DTLSv1_2_method();
    118 }
    119 
    120 const SSL_METHOD *DTLSv1_client_method(void) {
    121   return DTLSv1_method();
    122 }
    123 
    124 const SSL_METHOD *DTLS_server_method(void) {
    125   return DTLS_method();
    126 }
    127 
    128 const SSL_METHOD *DTLS_client_method(void) {
    129   return DTLS_method();
    130 }
    131