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#ifndef HEADER_CURL_KEYLOG_H
#define HEADER_CURL_KEYLOG_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "../curl_setup.h"
#define KEYLOG_LABEL_MAXLEN (sizeof("CLIENT_HANDSHAKE_TRAFFIC_SECRET") - 1)
#define CLIENT_RANDOM_SIZE 32
/*
* The master secret in TLS 1.2 and before is always 48 bytes. In TLS 1.3, the
* secret size depends on the cipher suite's hash function which is 32 bytes
* for SHA-256 and 48 bytes for SHA-384.
*/
#define SECRET_MAXLEN 48
/*
* Opens the TLS key log file if requested by the user. The SSLKEYLOGFILE
* environment variable specifies the output file.
*/
void Curl_tls_keylog_open(void);
/*
* Closes the TLS key log file if not already.
*/
void Curl_tls_keylog_close(void);
/*
* Returns true if the user successfully enabled the TLS key log file.
*/
bool Curl_tls_keylog_enabled(void);
/*
* Appends a key log file entry.
* Returns true iff the key log file is open and a valid entry was provided.
*/
bool Curl_tls_keylog_write(const char *label,
const unsigned char client_random[32],
const unsigned char *secret, size_t secretlen);
/*
* Appends a line to the key log file, ensure it is terminated by an LF.
* Returns true iff the key log file is open and a valid line was provided.
*/
bool Curl_tls_keylog_write_line(const char *line);
#endif /* HEADER_CURL_KEYLOG_H */
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