lib/libssl/d1_meth.c

   1 /* $OpenBSD: d1_meth.c,v 1.15 2017/10/12 15:52:50 jsing Exp $ */
   2 /*
   3  * DTLS implementation written by Nagendra Modadugu
   4  * (nagendra@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@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@cryptsoft.com).  This product includes software written by Tim
  56  * Hudson (tjh@cryptsoft.com).
  57  *
  58  */
  59
  60 #include <stdio.h>
  61
  62 #include <openssl/objects.h>
  63
  64 #include "ssl_locl.h"
  65
  66 static const SSL_METHOD *dtls1_get_method(int ver);
  67
  68 static const SSL_METHOD_INTERNAL DTLSv1_method_internal_data = {
  69         .version = DTLS1_VERSION,
  70         .min_version = DTLS1_VERSION,
  71         .max_version = DTLS1_VERSION,
  72         .ssl_new = dtls1_new,
  73         .ssl_clear = dtls1_clear,
  74         .ssl_free = dtls1_free,
  75         .ssl_accept = ssl3_accept,
  76         .ssl_connect = ssl3_connect,
  77         .ssl_read = ssl3_read,
  78         .ssl_peek = ssl3_peek,
  79         .ssl_write = ssl3_write,
  80         .ssl_shutdown = dtls1_shutdown,
  81         .ssl_pending = ssl3_pending,
  82         .get_ssl_method = dtls1_get_method,
  83         .get_timeout = dtls1_default_timeout,
  84         .ssl_version = ssl_undefined_void_function,
  85         .ssl_renegotiate = ssl3_renegotiate,
  86         .ssl_renegotiate_check = ssl3_renegotiate_check,
  87         .ssl_get_message = dtls1_get_message,
  88         .ssl_read_bytes = dtls1_read_bytes,
  89         .ssl_write_bytes = dtls1_write_app_data_bytes,
  90         .ssl3_enc = &DTLSv1_enc_data,
  91 };
  92
  93 static const SSL_METHOD DTLSv1_method_data = {
  94         .ssl_dispatch_alert = dtls1_dispatch_alert,
  95         .num_ciphers = ssl3_num_ciphers,
  96         .get_cipher = dtls1_get_cipher,
  97         .get_cipher_by_char = ssl3_get_cipher_by_char,
  98         .put_cipher_by_char = ssl3_put_cipher_by_char,
  99         .internal = &DTLSv1_method_internal_data,
 100 };
 101
 102 const SSL_METHOD *
 103 DTLSv1_method(void)
 104 {
 105         return &DTLSv1_method_data;
 106 }
 107
 108 static const SSL_METHOD *
 109 dtls1_get_method(int ver)
 110 {
 111         if (ver == DTLS1_VERSION)
 112                 return (DTLSv1_method());
 113         return (NULL);
 114 }