base64.c

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/* base64.c --- Base64 encoding/decoding functions.
 * Copyright (C) 2002-2025 Simon Josefsson
 *
 * This file is part of GNU SASL Library.
 *
 * GNU SASL Library 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.
 *
 * GNU SASL 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 SASL Library; if not, see
 * <https://www.gnu.org/licenses/>.
 *
 */
 
#include <config.h>
#include "internal.h"
 
#include "base64.h"
 
int
gsasl_base64_to (const char *in, size_t inlen, char **out, size_t *outlen)
{
  idx_t len = base64_encode_alloc (in, inlen, out);
 
  if (outlen)
    *outlen = len;
 
  if (*out == NULL)
    return GSASL_MALLOC_ERROR;
 
  return GSASL_OK;
}
 
int
gsasl_base64_from (const char *in, size_t inlen, char **out, size_t *outlen)
{
  idx_t ol;
  int ok = base64_decode_alloc (in, inlen, out, &ol);
 
  if (!ok)
    return GSASL_BASE64_ERROR;
 
  if (outlen)
    *outlen = ol;
 
  if (*out == NULL)
    return GSASL_MALLOC_ERROR;
 
  return GSASL_OK;
}
 
#include "mechtools.h"
 
int
gsasl_hex_to (const char *in, size_t inlen, char **out, size_t *outlen)
{
  size_t len = 2 * inlen;
 
  if (outlen)
    *outlen = len;
 
  *out = malloc (len + 1);
  if (*out == NULL)
    return GSASL_MALLOC_ERROR;
 
  _gsasl_hex_encode (in, inlen, *out);
  (*out)[len] = '\0';
 
  return GSASL_OK;
}
 
int
gsasl_hex_from (const char *in, char **out, size_t *outlen)
{
  size_t inlen = strlen (in);
  size_t l = inlen / 2;
 
  if (inlen % 2 != 0)
    return GSASL_BASE64_ERROR;
 
  if (!_gsasl_hex_p (in))
    return GSASL_BASE64_ERROR;
 
  *out = malloc (l);
  if (!*out)
    return GSASL_MALLOC_ERROR;
 
  _gsasl_hex_decode (in, *out);
 
  if (outlen)
    *outlen = l;
 
  return GSASL_OK;
}