digest_3.c

/* -*- c -*- */

/* Copyright (C) 2005-2015 Alexander Chernov <cher@ejudge.ru> */

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 */

#include "ejudge/digest_io.h"

#include "ejudge/logger.h"

#include <stdio.h>

int
digest_to_ascii(int kind, const void *raw, unsigned char *asc)
{
  int dlen, i;
  const unsigned char *p = (const unsigned char*) raw;

  switch (kind) {
  case DIGEST_SHA1: dlen = 20; break;
  default:
    SWERR(("unhandled digest type %d", kind));
  }

  for (i = 0; i < dlen; i++, p++, asc += 2)
    sprintf(asc, "%02x", *p);

  return dlen * 2;
}

int
digest_to_file(FILE *f, int kind, const void *raw)
{
  int dlen, i;
  const unsigned char *p = (const unsigned char*) raw;

  switch (kind) {
  case DIGEST_SHA1: dlen = 20; break;
  default:
    SWERR(("unhandled digest type %d", kind));
  }

  for (i = 0; i < dlen; i++, p++) {
    fprintf(f, "%02x", *p);
  }

  return dlen * 2;
}