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/* This file is part of tagr.
   Copyright (C) 2009 Max Bouglacoff, Sergey Poznyakoff

   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, 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/>. */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <netdb.h> 
#include <xalloc.h>
#include <xgethostname.h>
#include <xgetdomainname.h>

char *
tagr_local_hostname ()
{
  struct hostent *hp;
  char *hostpart = xgethostname ();
  char *ret;
	
  hp = gethostbyname (hostpart);
  if (hp) 
    ret = xstrdup (hp->h_name);
  else
    {
      char *domainpart = xgetdomainname ();

      if (domainpart && domainpart[0] && strcmp(domainpart, "(none)"))
	{
	  ret = xmalloc(strlen( hostpart) + 1
			+ strlen (domainpart) + 1);
	  strcpy(ret, hostpart);
	  strcat(ret, ".");
	  strcat(ret, domainpart);
	  free (hostpart);
	}
      else
	ret = hostpart;
      free (domainpart);
    }
  return ret;
}

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