xcode.c

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/* xcode.c --- Encode and decode application payload in libgsasl session.
 * Copyright (C) 2002-2012 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 License along with GNU SASL Library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#include "internal.h"

static int
_gsasl_code (Gsasl_session * sctx,
             Gsasl_code_function code,
             const char *input, size_t input_len,
             char **output, size_t * output_len)
{

  if (code == NULL)
    {
      *output_len = input_len;
      *output = malloc (*output_len);
      if (!*output)
        return GSASL_MALLOC_ERROR;

      memcpy (*output, input, input_len);
      return GSASL_OK;
    }

  return code (sctx, sctx->mech_data, input, input_len, output, output_len);
}

int
gsasl_encode (Gsasl_session * sctx,
              const char *input, size_t input_len,
              char **output, size_t * output_len)
{
  Gsasl_code_function code;

  if (sctx->clientp)
    code = sctx->mech->client.encode;
  else
    code = sctx->mech->server.encode;

  return _gsasl_code (sctx, code, input, input_len, output, output_len);
}

int
gsasl_decode (Gsasl_session * sctx,
              const char *input, size_t input_len,
              char **output, size_t * output_len)
{
  Gsasl_code_function code;

  if (sctx->clientp)
    code = sctx->mech->client.decode;
  else
    code = sctx->mech->server.decode;

  return _gsasl_code (sctx, code, input, input_len, output, output_len);
}