/*

 * File functions

 *

 * Copyright (C) 2009-2022, 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>

#include "libbfio_definitions.h"

#include "libbfio_file.h"

#include "libbfio_file_io_handle.h"

#include "libbfio_handle.h"

#include "libbfio_libcerror.h"

#include "libbfio_libcpath.h"

#include "libbfio_types.h"

/* Creates a file handle

 * Make sure the value handle is referencing, is set to NULL

 * Returns 1 if successful or -1 on error

 */

int libbfio_file_initialize(

     libbfio_handle_t **handle,

     libcerror_error_t **error )

{

  libbfio_file_io_handle_t *file_io_handle = NULL;

  static char *function                    = "libbfio_file_initialize";

  if( handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid handle.",

     function );

    return( -1 );

  }

  if( *handle != NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_VALUE_ALREADY_SET,

     "%s: invalid handle value already set.",

     function );

    return( -1 );

  }

  if( libbfio_file_io_handle_initialize(

       &file_io_handle,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

     "%s: unable to create file IO handle.",

     function );

    goto on_error;

  }

  if( libbfio_handle_initialize(

       handle,

       (intptr_t *) file_io_handle,

       (int (*)(intptr_t **, libcerror_error_t **)) libbfio_file_io_handle_free,

       (int (*)(intptr_t **, intptr_t *, libcerror_error_t **)) libbfio_file_io_handle_clone,

       (int (*)(intptr_t *, int, libcerror_error_t **)) libbfio_file_io_handle_open,

       (int (*)(intptr_t *, libcerror_error_t **)) libbfio_file_io_handle_close,

       (ssize_t (*)(intptr_t *, uint8_t *, size_t, libcerror_error_t **)) libbfio_file_io_handle_read_buffer,

       (ssize_t (*)(intptr_t *, const uint8_t *, size_t, libcerror_error_t **)) libbfio_file_io_handle_write_buffer,

       (off64_t (*)(intptr_t *, off64_t, int, libcerror_error_t **)) libbfio_file_io_handle_seek_offset,

       (int (*)(intptr_t *, libcerror_error_t **)) libbfio_file_io_handle_exists,

       (int (*)(intptr_t *, libcerror_error_t **)) libbfio_file_io_handle_is_open,

       (int (*)(intptr_t *, size64_t *, libcerror_error_t **)) libbfio_file_io_handle_get_size,

       LIBBFIO_FLAG_IO_HANDLE_MANAGED | LIBBFIO_FLAG_IO_HANDLE_CLONE_BY_FUNCTION,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED,

     "%s: unable to create handle.",

     function );

    goto on_error;

  }

  return( 1 );

on_error:

  if( file_io_handle != NULL )

  {

    libbfio_file_io_handle_free(

     &file_io_handle,

     NULL );

  }

  return( -1 );

}

/* Retrieves the name size of the file handle

 * The name size includes the end of string character

 * Returns 1 if succesful or -1 on error

 */

int libbfio_file_get_name_size(

     libbfio_handle_t *handle,

     size_t *name_size,

     libcerror_error_t **error )

{

  libbfio_internal_handle_t *internal_handle = NULL;

  static char *function                      = "libbfio_file_get_name_size";

  if( handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid handle.",

     function );

    return( -1 );

  }

  internal_handle = (libbfio_internal_handle_t *) handle;

  if( libbfio_file_io_handle_get_name_size(

       (libbfio_file_io_handle_t *) internal_handle->io_handle,

       name_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve name size.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the name of the file handle

 * The name size should include the end of string character

 * Returns 1 if succesful or -1 on error

 */

int libbfio_file_get_name(

     libbfio_handle_t *handle,

     char *name,

     size_t name_size,

     libcerror_error_t **error )

{

  libbfio_internal_handle_t *internal_handle = NULL;

  static char *function                      = "libbfio_file_get_name";

  if( handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid handle.",

     function );

    return( -1 );

  }

  internal_handle = (libbfio_internal_handle_t *) handle;

  if( libbfio_file_io_handle_get_name(

       (libbfio_file_io_handle_t *) internal_handle->io_handle,

       name,

       name_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve name.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Sets the name for the file handle

 * Returns 1 if succesful or -1 on error

 */

int libbfio_file_set_name(

     libbfio_handle_t *handle,

     const char *name,

     size_t name_length,

     libcerror_error_t **error )

{

  libbfio_internal_handle_t *internal_handle = NULL;

  char *full_name                            = NULL;

  static char *function                      = "libbfio_file_set_name";

  size_t full_name_size                      = 0;

  if( handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid handle.",

     function );

    return( -1 );

  }

  internal_handle = (libbfio_internal_handle_t *) handle;

  if( libcpath_path_get_full_path(

       name,

       name_length,

       &full_name,

       &full_name_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to determine full path.",

     function );

    goto on_error;

  }

  if( libbfio_file_io_handle_set_name(

       (libbfio_file_io_handle_t *) internal_handle->io_handle,

       full_name,

       full_name_size - 1,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to set name.",

     function );

    goto on_error;

  }

  if( ( full_name != NULL )

   && ( full_name != name ) )

  {

    memory_free(

     full_name );

  }

  return( 1 );

on_error:

  if( ( full_name != NULL )

   && ( full_name != name ) )

  {

    memory_free(

     full_name );

  }

  return( -1 );

}

#if defined( HAVE_WIDE_CHARACTER_TYPE )

/* Retrieves the name size of the file handle

 * The name size includes the end of string character

 * Returns 1 if succesful or -1 on error

 */

int libbfio_file_get_name_size_wide(

     libbfio_handle_t *handle,

     size_t *name_size,

     libcerror_error_t **error )

{

  libbfio_internal_handle_t *internal_handle = NULL;

  static char *function                      = "libbfio_file_get_name_size_wide";

  if( handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid handle.",

     function );

    return( -1 );

  }

  internal_handle = (libbfio_internal_handle_t *) handle;

  if( libbfio_file_io_handle_get_name_size_wide(

       (libbfio_file_io_handle_t *) internal_handle->io_handle,

       name_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve name size.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Retrieves the name of the file handle

 * The name size should include the end of string character

 * Returns 1 if succesful or -1 on error

 */

int libbfio_file_get_name_wide(

     libbfio_handle_t *handle,

     wchar_t *name,

     size_t name_size,

     libcerror_error_t **error )

{

  libbfio_internal_handle_t *internal_handle = NULL;

  static char *function                      = "libbfio_file_get_name_wide";

  if( handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid handle.",

     function );

    return( -1 );

  }

  internal_handle = (libbfio_internal_handle_t *) handle;

  if( libbfio_file_io_handle_get_name_wide(

       (libbfio_file_io_handle_t *) internal_handle->io_handle,

       name,

       name_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_GET_FAILED,

     "%s: unable to retrieve name.",

     function );

    return( -1 );

  }

  return( 1 );

}

/* Sets the name for the file handle

 * Returns 1 if succesful or -1 on error

 */

int libbfio_file_set_name_wide(

     libbfio_handle_t *handle,

     const wchar_t *name,

     size_t name_length,

     libcerror_error_t **error )

{

  libbfio_internal_handle_t *internal_handle = NULL;

  wchar_t *full_name                         = NULL;

  static char *function                      = "libbfio_file_set_name_wide";

  size_t full_name_size                      = 0;

  if( handle == NULL )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,

     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,

     "%s: invalid handle.",

     function );

    return( -1 );

  }

  internal_handle = (libbfio_internal_handle_t *) handle;

  if( libcpath_path_get_full_path_wide(

       name,

       name_length,

       &full_name,

       &full_name_size,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to determine full path.",

     function );

    goto on_error;

  }

  if( libbfio_file_io_handle_set_name_wide(

       (libbfio_file_io_handle_t *) internal_handle->io_handle,

       full_name,

       full_name_size - 1,

       error ) != 1 )

  {

    libcerror_error_set(

     error,

     LIBCERROR_ERROR_DOMAIN_RUNTIME,

     LIBCERROR_RUNTIME_ERROR_SET_FAILED,

     "%s: unable to set name.",

     function );

    goto on_error;

  }

  if( ( full_name != NULL )

   && ( full_name != name ) )

  {

    memory_free(

     full_name );

  }

  return( 1 );

on_error:

  if( ( full_name != NULL )

   && ( full_name != name ) )

  {

    memory_free(

     full_name );

  }

  return( -1 );

}

#endif /* defined( HAVE_WIDE_CHARACTER_TYPE ) */