/* $Header: /CVSROOT/debris/drismd5.h,v 1.1 2005/07/25 03:16:06 tino Exp $
 *
 * DebRIS: DEBian Remote Install Scripter
 * MD5 functions, once was drisnext
 *
 * $Log: drismd5.h,v $
 * Revision 1.1  2005/07/25 03:16:06  tino
 * added from drisnext.h
 *
 */

#include <openssl/md5.h>

static MD5_CTX	dris_md5;

static void
dris_md5_add(const void *ptr, size_t len)
{
  if (len)
    MD5_Update(&dris_md5, ptr, len);
}

static void
dris_md5_add_s(const char *s)
{
  dris_md5_add(s, strlen(s));
}

static void
dris_md5_init(void)
{
  MD5_Init(&dris_md5);
}

static void
dris_md5_cksum_init(void)
{
  dris_md5_init();
  dris_md5_add_s(config.pw);
}

static const char *
dris_md5_get(void)
{
  static const char	hex[]	= "0123456789abcdef";
  static char		ret[40];
  char			digest[16], *ptr;
  int			i;

  MD5_Final(digest, &dris_md5);

  ptr	= ret;
  for (i=0; i<16; i++)
    {
      *ptr++	= hex[(digest[i]>>4)&0xf];
      *ptr++	= hex[(digest[i]>>0)&0xf];
    }
  *ptr++	= '\r';
  *ptr++	= '\n';
  *ptr		= 0;
  return ret;
}