/*

 * lftp - file transfer program

 *

 * Copyright (c) 1996-2017 by Alexander V. Lukyanov (lav@yars.free.net)

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU 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 General Public License

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

 */

#include <config.h>

#include <stdlib.h>

#include <unistd.h>

#include <fcntl.h>

#include <errno.h>

#include <string.h>

#include "LocalDir.h"

#include "misc.h"

#ifndef O_DIRECTORY

# define O_DIRECTORY 0

#endif

void LocalDirectory::SetFromCWD()

{

   Unset();

   fd=open(".",O_RDONLY|O_DIRECTORY);

   fcntl(fd,F_SETFD,FD_CLOEXEC);

   xgetcwd_to(name);

}

const char *LocalDirectory::Chdir()

{

#ifdef HAVE_FCHDIR

   if(fd!=-1)

   {

      int res=fchdir(fd);

      if(res==-1)

	 return strerror(errno);

      return 0;

   }

#endif

   if(name)

   {

      int res=chdir(name);

      if(res==-1)

	 return strerror(errno);

      return 0;

   }

   return "Directory location is undefined";

}

const char *LocalDirectory::GetName()

{

   return name;

}

void LocalDirectory::Unset()

{

   if(fd!=-1)

      close(fd);

   fd=-1;

   name.set(0);

}

LocalDirectory::LocalDirectory()

{

   fd=-1;

}

LocalDirectory::LocalDirectory(const LocalDirectory *o)

{

   fd=-1;

   if(o->fd!=-1) {

      fd=dup(o->fd);

      fcntl(fd,F_SETFD,FD_CLOEXEC);

   }

   name.set(o->name);

}

LocalDirectory *LocalDirectory::Clone() const

{

   return new LocalDirectory(this);

}

LocalDirectory::~LocalDirectory()

{

   Unset();

}