// $Id: getvservercfgstyle.c 1804 2005-01-26 23:29:06Z ensc $    --*- c -*--

// Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
//  
// 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; version 2 of the License.
//  
// 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.


#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include "vserver.h"
#include "pathconfig.h"
#include "internal.h"

#include <string.h>
#include <sys/param.h>
#include <unistd.h>
#include <assert.h>

static inline bool
isRelPath(char const *p)
{
  return p[0]=='.' && (p[1]=='/' || (p[1]=='.' && p[2]=='/'));
}

static inline bool
isAbsPath(char const *p)
{
  return p[0]=='/';
}

#define ISDIR	utilvserver_isDirectory(buf, true)
#define ISFILE	utilvserver_isFile(buf, true)
#define ISLINK	utilvserver_isLink(buf)

vcCfgStyle
vc_getVserverCfgStyle(char const *id)
{
  vcCfgStyle	res = vcCFG_NONE;
  size_t	l1  = strlen(id);
  char		buf[l1 +
		    MAX(sizeof(CONFDIR "/"),sizeof(DEFAULT_VSERVERDIR "/")) +
		    MAX(sizeof("/legacy"),  sizeof(".conf")) - 1];
  char *	marker = 0;
  bool		is_path;

  strcpy(buf,    id);
  marker = buf+l1;
  strcpy(marker, "/vdir");

  is_path = isAbsPath(buf) || isRelPath(buf);
  if (is_path && (ISDIR || ISLINK))
    res = vcCFG_RECENT_FULL;
  else if (!is_path) {
    strcpy(buf,                         CONFDIR "/");
    strcpy(buf+sizeof(CONFDIR "/") - 1, id);
    marker = buf+sizeof(CONFDIR "/")+l1 - 1;
    strcpy(marker, "/vdir");

    if (ISDIR) res = vcCFG_RECENT_SHORT;
    else {
      strcpy(buf,                                  DEFAULT_VSERVERDIR "/");
      strcpy(buf+sizeof(DEFAULT_VSERVERDIR)+1 - 1, id);

      if (ISDIR) res = vcCFG_LEGACY;
    }

    if (res==vcCFG_LEGACY) {
      strcpy(buf,                            CONFDIR "/");
      strcpy(buf+sizeof(CONFDIR "/") - 1,    id);
      strcpy(buf+sizeof(CONFDIR "/")+l1 - 1, ".conf");

      if (!ISFILE) res = vcCFG_NONE;
    }
  }


  if (res==vcCFG_RECENT_FULL || res==vcCFG_RECENT_SHORT) {
    assert(marker!=0);
    strcpy(marker, "/legacy");
    if (access(buf, F_OK)==0) res=vcCFG_LEGACY;
  }

  return res;
}