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%%	options
copyright owner	=	Dirk Krause
copyright year	=	2017-xxxx
SPDX-License-Identifier:	BSD-3-Clause


%%	module

#include "dk4conf.h"
#include "dk4md.h"
#include "dk4strd.h"

#if DK4_HAVE_ASSERT_H
#ifndef	ASSERT_H_INCLUDED
#include <assert.h>
#define	ASSERT_H_INCLUDED 1
#endif
#endif


$!trace-include



/**     Message digest type names.
        Order must match the definition order in the enum in dk4md.h.
*/
static const dkChar * const     dk4md_type_names[] = {
$!string-table  macro=dkT
md5
sha-1
sha-224
sha-256
sha-384
sha-512
ripemd-160
sha1
sha224
sha256
sha384
sha512
ripemd160
$!end
};



int
dk4md_choose_type(const dkChar *name, dk4_er_t *erp)
{
  int		 back = -1;
#if	DK4_USE_ASSERT
	assert(NULL != name);
#endif
  if (NULL != name) {
    switch (dk4str_array_index(dk4md_type_names, name, 0)) {
      case 0: {
        back = DK4_MD_MD5;
      } break;
      case 1: case 7: {
        back = DK4_MD_SHA1;
      } break;
      case 2: case 8: {
        back = DK4_MD_SHA224;
      } break;
      case 3: case 9: {
        back = DK4_MD_SHA256;
      } break;
      case 4: case 10: {
        back = DK4_MD_SHA384;
      } break;
      case 5: case 11: {
        back = DK4_MD_SHA512;
      } break;
      case 6: case 12: {
        back = DK4_MD_RIPEMD_160;
      } break;
    }
    if (-1 == back) {
      dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}



int
dk4md_check_type(int mdtype)
{
  int		 back = 0;
  switch (mdtype) {
    case DK4_MD_MD5 : {
#if DK4_HAVE_OPENSSL_MD5_H
      back = 1;
#endif
    } break;
    case DK4_MD_SHA1 : {
#if DK4_HAVE_OPENSSL_SHA_H
      back = 1;
#endif
    } break;
    case DK4_MD_SHA224 : {
#if DK4_HAVE_OPENSSL_SHA_H && DK4_HAVE_SHA224
      back = 1;
#endif
    } break;
    case DK4_MD_SHA256 : {
#if DK4_HAVE_OPENSSL_SHA_H && DK4_HAVE_SHA256
      back = 1;
#endif
    } break;
    case DK4_MD_SHA384 : {
#if DK4_HAVE_OPENSSL_SHA_H && DK4_HAVE_SHA384
      back = 1;
#endif
    } break;
    case DK4_MD_SHA512 : {
#if DK4_HAVE_OPENSSL_SHA_H && DK4_HAVE_SHA512
      back = 1;
#endif
    } break;
    case DK4_MD_RIPEMD_160 : {
#if DK4_HAVE_OPENSSL_RIPEMD_H
      back = 1;
#endif
    } break;
  }
  return back;
}