/*

 * Compression functions

 *

 * Copyright (C) 2010-2024, Joachim Metz <joachim.metz@gmail.com>

 *

 * Refer to AUTHORS for acknowledgements.

 *

 * This program 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 3 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.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with this program.  If not, see <https://www.gnu.org/licenses/>.

 */

#include <common.h>

#include <memory.h>

#include <types.h>

#if defined( HAVE_STDLIB_H ) || defined( WINAPI )

#include <stdlib.h>

#endif

#include "libfsntfs_compression.h"

#include "libfsntfs_definitions.h"

#include "libfsntfs_libcerror.h"

#include "libfsntfs_libfwnt.h"

/* Decompresses data using the compression method

 * Returns 1 on success, 0 on failure or -1 on error

 */

int libfsntfs_decompress_data(

     const uint8_t *compressed_data,

     size_t compressed_data_size,

     int compression_method,

     uint8_t *uncompressed_data,

     size_t *uncompressed_data_size,

     libcerror_error_t **error )

{

  static char *function = "libfsntfs_decompress_data";

  if( compressed_data == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid compressed data buffer.",

     function );

    return( -1 );

  }

  if( uncompressed_data == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid uncompressed data buffer.",

     function );

    return( -1 );

  }

  if( uncompressed_data == compressed_data )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid compressed data buffer equals uncompressed data buffer.",

     function );

    return( -1 );

  }

  if( uncompressed_data_size == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid uncompressed data size.",

     function );

    return( -1 );

  }

  switch( compression_method )

  {

    case LIBFSNTFS_COMPRESSION_METHOD_LZNT1:

      if( libfwnt_lznt1_decompress(

           compressed_data,

           compressed_data_size,

           uncompressed_data,

           uncompressed_data_size,

           error ) != 1 )

      {

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_COMPRESSION,

         LIBCERROR_COMPRESSION_ERROR_DECOMPRESS_FAILED,

         "%s: unable to decompress LZNT1 compressed data.",

         function );

        return( -1 );

      }

      break;

    case LIBFSNTFS_COMPRESSION_METHOD_LZX:

      if( libfwnt_lzx_decompress(

           compressed_data,

           compressed_data_size,

           uncompressed_data,

           uncompressed_data_size,

           error ) != 1 )

      {

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_COMPRESSION,

         LIBCERROR_COMPRESSION_ERROR_DECOMPRESS_FAILED,

         "%s: unable to decompress LZX compressed data.",

         function );

        return( -1 );

      }

      break;

    case LIBFSNTFS_COMPRESSION_METHOD_LZXPRESS_HUFFMAN:

      if( libfwnt_lzxpress_huffman_decompress(

           compressed_data,

           compressed_data_size,

           uncompressed_data,

           uncompressed_data_size,

           error ) != 1 )

      {

        libcerror_error_set(

         error,

         LIBCERROR_ERROR_DOMAIN_COMPRESSION,

         LIBCERROR_COMPRESSION_ERROR_DECOMPRESS_FAILED,

         "%s: unable to decompress LZXPRESS Huffman compressed data.",

         function );

        return( -1 );

      }

      break;

    default:

      libcerror_error_set(

       error,

       LIBCERROR_ERROR_DOMAIN_RUNTIME,

       LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE,

       "%s: unsupported compression method.",

       function );

      return( -1 );

  }

  return( 1 );

}