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110 lines
3.1 KiB
C
110 lines
3.1 KiB
C
/**
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* \file ssl_cookie.h
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*
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* \brief DTLS cookie callbacks implementation
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*/
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/*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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*/
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#ifndef MBEDTLS_SSL_COOKIE_H
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#define MBEDTLS_SSL_COOKIE_H
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#include "ssl.h"
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#if defined(MBEDTLS_THREADING_C)
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#include "threading.h"
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#endif
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/**
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* \name SECTION: Module settings
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*
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* The configuration options you can set for this module are in this section.
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* Either change them in config.h or define them on the compiler command line.
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* \{
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*/
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#ifndef MBEDTLS_SSL_COOKIE_TIMEOUT
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#define MBEDTLS_SSL_COOKIE_TIMEOUT 60 /**< Default expiration delay of DTLS cookies, in seconds if HAVE_TIME, or in number of cookies issued */
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#endif
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/* \} name SECTION: Module settings */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \brief Context for the default cookie functions.
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*/
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typedef struct
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{
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mbedtls_md_context_t hmac_ctx; /*!< context for the HMAC portion */
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#if !defined(MBEDTLS_HAVE_TIME)
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unsigned long serial; /*!< serial number for expiration */
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#endif
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unsigned long timeout; /*!< timeout delay, in seconds if HAVE_TIME,
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or in number of tickets issued */
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#if defined(MBEDTLS_THREADING_C)
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mbedtls_threading_mutex_t mutex;
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#endif
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} mbedtls_ssl_cookie_ctx;
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/**
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* \brief Initialize cookie context
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*/
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void mbedtls_ssl_cookie_init( mbedtls_ssl_cookie_ctx *ctx );
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/**
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* \brief Setup cookie context (generate keys)
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*/
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int mbedtls_ssl_cookie_setup( mbedtls_ssl_cookie_ctx *ctx,
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int (*f_rng)(void *, unsigned char *, size_t),
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void *p_rng );
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/**
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* \brief Set expiration delay for cookies
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* (Default MBEDTLS_SSL_COOKIE_TIMEOUT)
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*
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* \param ctx Cookie contex
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* \param delay Delay, in seconds if HAVE_TIME, or in number of cookies
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* issued in the meantime.
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* 0 to disable expiration (NOT recommended)
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*/
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void mbedtls_ssl_cookie_set_timeout( mbedtls_ssl_cookie_ctx *ctx, unsigned long delay );
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/**
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* \brief Free cookie context
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*/
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void mbedtls_ssl_cookie_free( mbedtls_ssl_cookie_ctx *ctx );
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/**
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* \brief Generate cookie, see \c mbedtls_ssl_cookie_write_t
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*/
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mbedtls_ssl_cookie_write_t mbedtls_ssl_cookie_write;
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/**
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* \brief Verify cookie, see \c mbedtls_ssl_cookie_write_t
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*/
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mbedtls_ssl_cookie_check_t mbedtls_ssl_cookie_check;
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#ifdef __cplusplus
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}
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#endif
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#endif /* ssl_cookie.h */
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