libmicrohttpd

HTTP/1.x server C library (MHD 1.x, stable)
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mhd_md5_wrap.h (2904B)

      1 /*
      2      This file is part of GNU libmicrohttpd
      3      Copyright (C) 2022 Evgeny Grin (Karlson2k)
      4 
      5      GNU libmicrohttpd is free software; you can redistribute it and/or
      6      modify it under the terms of the GNU Lesser General Public
      7      License as published by the Free Software Foundation; either
      8      version 2.1 of the License, or (at your option) any later version.
      9 
     10      This library is distributed in the hope that it will be useful,
     11      but WITHOUT ANY WARRANTY; without even the implied warranty of
     12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13      Lesser General Public License for more details.
     14 
     15      You should have received a copy of the GNU Lesser General Public
     16      License along with GNU libmicrohttpd.
     17      If not, see <http://www.gnu.org/licenses/>.
     18 */
     19 
     20 /**
     21  * @file microhttpd/mhd_md5_wrap.h
     22  * @brief  Simple wrapper for selection of built-in/external MD5 implementation
     23  * @author Karlson2k (Evgeny Grin)
     24  */
     25 
     26 #ifndef MHD_MD5_WRAP_H
     27 #define MHD_MD5_WRAP_H 1
     28 
     29 #include "mhd_options.h"
     30 #ifndef MHD_MD5_SUPPORT
     31 #error This file must be used only when MD5 is enabled
     32 #endif
     33 #ifndef MHD_MD5_TLSLIB
     34 #include "md5.h"
     35 #else  /* MHD_MD5_TLSLIB */
     36 #include "md5_ext.h"
     37 #endif /* MHD_MD5_TLSLIB */
     38 
     39 #ifndef MD5_DIGEST_SIZE
     40 /**
     41  * Size of MD5 resulting digest in bytes
     42  * This is the final digest size, not intermediate hash.
     43  */
     44 #define MD5_DIGEST_SIZE (16)
     45 #endif /* ! MD5_DIGEST_SIZE */
     46 
     47 #ifndef MD5_DIGEST_STRING_SIZE
     48 /**
     49  * Size of MD5 digest string in chars including termination NUL.
     50  */
     51 #define MD5_DIGEST_STRING_SIZE ((MD5_DIGEST_SIZE) * 2 + 1)
     52 #endif /* ! MD5_DIGEST_STRING_SIZE */
     53 
     54 #ifndef MHD_MD5_TLSLIB
     55 /**
     56  * Universal ctx type mapped for chosen implementation
     57  */
     58 #define Md5CtxWr Md5Ctx
     59 #else  /* MHD_MD5_TLSLIB */
     60 /**
     61  * Universal ctx type mapped for chosen implementation
     62  */
     63 #define Md5CtxWr Md5CtxExt
     64 #endif /* MHD_MD5_TLSLIB */
     65 
     66 #ifndef MHD_MD5_HAS_INIT_ONE_TIME
     67 /**
     68  * Setup and prepare ctx for hash calculation
     69  */
     70 #define MHD_MD5_init_one_time(ctx) MHD_MD5_init(ctx)
     71 #endif /* ! MHD_MD5_HAS_INIT_ONE_TIME */
     72 
     73 #ifndef MHD_MD5_HAS_FINISH_RESET
     74 /**
     75  * Re-use the same ctx for the new hashing after digest calculated
     76  */
     77 #define MHD_MD5_reset(ctx) MHD_MD5_init(ctx)
     78 /**
     79  * Finalise MD5 calculation, return digest, reset hash calculation.
     80  */
     81 #define MHD_MD5_finish_reset(ctx,digest) MHD_MD5_finish(ctx,digest), \
     82                                          MHD_MD5_reset(ctx)
     83 
     84 #else  /* MHD_MD5_HAS_FINISH_RESET */
     85 #define MHD_MD5_reset(ctx) (void)0
     86 #endif /* MHD_MD5_HAS_FINISH_RESET */
     87 
     88 #ifndef MHD_MD5_HAS_DEINIT
     89 #define MHD_MD5_deinit(ignore) (void)0
     90 #endif /* HAVE_MD5_DEINIT */
     91 
     92 /* Sanity checks */
     93 
     94 #if ! defined(MHD_MD5_HAS_FINISH_RESET) && ! defined(MHD_MD5_HAS_FINISH)
     95 #error Required at least one of MHD_MD5_finish_reset(), MHD_MD5_finish_reset()
     96 #endif /* ! MHD_MD5_HAS_FINISH_RESET && ! MHD_MD5_HAS_FINISH */
     97 
     98 #endif /* MHD_MD5_WRAP_H */