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/*
This file is part of GNU libmicrohttpd
Copyright (C) 2022 Evgeny Grin (Karlson2k)
GNU libmicrohttpd is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with GNU libmicrohttpd.
If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file microhttpd/mhd_md5_wrap.h
* @brief Simple wrapper for selection of built-in/external MD5 implementation
* @author Karlson2k (Evgeny Grin)
*/
#ifndef MHD_MD5_WRAP_H
#define MHD_MD5_WRAP_H 1
#include "mhd_options.h"
#ifndef MHD_MD5_SUPPORT
#error This file must be used only when MD5 is enabled
#endif
#ifndef MHD_MD5_TLSLIB
#include "md5.h"
#else /* MHD_MD5_TLSLIB */
#include "md5_ext.h"
#endif /* MHD_MD5_TLSLIB */
#ifndef MD5_DIGEST_SIZE
/**
* Size of MD5 resulting digest in bytes
* This is the final digest size, not intermediate hash.
*/
#define MD5_DIGEST_SIZE (16)
#endif /* ! MD5_DIGEST_SIZE */
#ifndef MD5_DIGEST_STRING_SIZE
/**
* Size of MD5 digest string in chars including termination NUL.
*/
#define MD5_DIGEST_STRING_SIZE ((MD5_DIGEST_SIZE) * 2 + 1)
#endif /* ! MD5_DIGEST_STRING_SIZE */
#ifndef MHD_MD5_TLSLIB
/**
* Universal ctx type mapped for chosen implementation
*/
#define Md5CtxWr Md5Ctx
#else /* MHD_MD5_TLSLIB */
/**
* Universal ctx type mapped for chosen implementation
*/
#define Md5CtxWr Md5CtxExt
#endif /* MHD_MD5_TLSLIB */
#ifndef MHD_MD5_HAS_INIT_ONE_TIME
/**
* Setup and prepare ctx for hash calculation
*/
#define MHD_MD5_init_one_time(ctx) MHD_MD5_init(ctx)
#endif /* ! MHD_MD5_HAS_INIT_ONE_TIME */
#ifndef MHD_MD5_HAS_FINISH_RESET
/**
* Re-use the same ctx for the new hashing after digest calculated
*/
#define MHD_MD5_reset(ctx) MHD_MD5_init(ctx)
/**
* Finalise MD5 calculation, return digest, reset hash calculation.
*/
#define MHD_MD5_finish_reset(ctx,digest) MHD_MD5_finish(ctx,digest), \
MHD_MD5_reset(ctx)
#else /* MHD_MD5_HAS_FINISH_RESET */
#define MHD_MD5_reset(ctx) (void)0
#endif /* MHD_MD5_HAS_FINISH_RESET */
#ifndef MHD_MD5_HAS_DEINIT
#define MHD_MD5_deinit(ignore) (void)0
#endif /* HAVE_MD5_DEINIT */
/* Sanity checks */
#if ! defined(MHD_MD5_HAS_FINISH_RESET) && ! defined(MHD_MD5_HAS_FINISH)
#error Required at least one of MHD_MD5_finish_reset(), MHD_MD5_finish_reset()
#endif /* ! MHD_MD5_HAS_FINISH_RESET && ! MHD_MD5_HAS_FINISH */
#endif /* MHD_MD5_WRAP_H */
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