encfs/fs/NullNameIO.cpp

/*****************************************************************************
 * Author:   Valient Gough <vgough@pobox.com>
 *
 *****************************************************************************
 * Copyright (c) 2004, Valient Gough
 *
 * 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 Lesser 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 <http://www.gnu.org/licenses/>.
 */

#include "base/base64.h"
#include "cipher/CipherV1.h"
#include "fs/NullNameIO.h"

#include <cstring>

namespace encfs {

static shared_ptr<NameIO> NewNNIO( const Interface &, 
    const shared_ptr<CipherV1> & )
{
  return shared_ptr<NameIO>( new NullNameIO() );
}

static Interface NNIOIface = makeInterface("nameio/null", 1, 0, 0);
static bool NullNameIO_registered = NameIO::Register("Null",
    "No encryption of filenames", NNIOIface, NewNNIO, false);

NullNameIO::NullNameIO( )
{
}

NullNameIO::~NullNameIO()
{
}

Interface NullNameIO::interface() const
{
  return NNIOIface;
}

Interface NullNameIO::CurrentInterface()
{
  return NNIOIface;
}


int NullNameIO::maxEncodedNameLen( int plaintextNameLen ) const
{
  return plaintextNameLen;
}

int NullNameIO::maxDecodedNameLen( int encodedNameLen ) const
{
  return encodedNameLen;
}

int NullNameIO::encodeName( const char *plaintextName, int length,
    uint64_t *iv, char *encodedName ) const
{
  memcpy( encodedName, plaintextName, length );
  return length;
}

int NullNameIO::decodeName( const char *encodedName, int length,
    uint64_t *iv, char *plaintextName ) const
{
  memcpy( plaintextName, encodedName, length );
  return length;
}

bool NullNameIO::Enabled()
{
  return true;
}

}  // namespace encfs