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  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. #include <openssl/ssl.h>
  57. #include "internal.h"
  58. static const SSL_PROTOCOL_METHOD DTLS_protocol_method = {
  59. 1 /* is_dtls */,
  60. dtls1_new,
  61. dtls1_free,
  62. dtls1_accept,
  63. dtls1_connect,
  64. dtls1_get_message,
  65. dtls1_read_app_data,
  66. dtls1_read_close_notify,
  67. dtls1_write_app_data,
  68. dtls1_dispatch_alert,
  69. dtls1_supports_cipher,
  70. DTLS1_HM_HEADER_LENGTH,
  71. dtls1_set_handshake_header,
  72. dtls1_handshake_write,
  73. };
  74. const SSL_METHOD *DTLS_method(void) {
  75. static const SSL_METHOD method = {
  76. 0,
  77. &DTLS_protocol_method,
  78. };
  79. return &method;
  80. }
  81. /* Legacy version-locked methods. */
  82. const SSL_METHOD *DTLSv1_2_method(void) {
  83. static const SSL_METHOD method = {
  84. DTLS1_2_VERSION,
  85. &DTLS_protocol_method,
  86. };
  87. return &method;
  88. }
  89. const SSL_METHOD *DTLSv1_method(void) {
  90. static const SSL_METHOD method = {
  91. DTLS1_VERSION,
  92. &DTLS_protocol_method,
  93. };
  94. return &method;
  95. }
  96. /* Legacy side-specific methods. */
  97. const SSL_METHOD *DTLSv1_2_server_method(void) {
  98. return DTLSv1_2_method();
  99. }
  100. const SSL_METHOD *DTLSv1_server_method(void) {
  101. return DTLSv1_method();
  102. }
  103. const SSL_METHOD *DTLSv1_2_client_method(void) {
  104. return DTLSv1_2_method();
  105. }
  106. const SSL_METHOD *DTLSv1_client_method(void) {
  107. return DTLSv1_method();
  108. }
  109. const SSL_METHOD *DTLS_server_method(void) {
  110. return DTLS_method();
  111. }
  112. const SSL_METHOD *DTLS_client_method(void) {
  113. return DTLS_method();
  114. }