/* $Id: myname.C,v 1.5 2001/07/24 04:04:09 dm Exp $ */

/*
 *
 * Copyright (C) 1998 David Mazieres (dm@uun.org)
 *
 * 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 2, 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 *
 */

#include "dns.h"

str
mydomain ()
{
  if (!(_res.options & RES_INIT))
    res_init ();
  return _res.dnsrch[0];
}


#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 256
#endif /* !MAXHOSTNAMELEN */

str
myname ()
{
  char namebuf[MAXHOSTNAMELEN+1];
  namebuf[MAXHOSTNAMELEN] = '\0';
  if (gethostname (namebuf, MAXHOSTNAMELEN) < 0)
    panic ("gethostname: %m\n");

  if (strchr (namebuf, '.'))
    return namebuf;
  else {
    if (!(_res.options & RES_INIT))
      res_init ();
    if (!_res.dnsrch[0]) {
      warn ("cannot find fully qualified domain name\n");
      return NULL;
    }
    return strbuf ("%s.%s", namebuf, _res.dnsrch[0]);
  }
}