/* Copyright (C) 1996-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.

   The GNU C Library 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 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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 the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#include "nsswitch.h"

/*******************************************************************\

|* Here we assume one symbol to be defined:			   *|

|* 								   *|

|* DATABASE_NAME - name of the database the function accesses	   *|

|*		   (e.g., hosts, services, ...)			   *|

|* 								   *|

|* One additional symbol may optionally be defined:		   *|

|* 								   *|

|* ALTERNATE_NAME - name of another service which is examined in   *|

|*                  case DATABASE_NAME is not found                *|

|* 								   *|

|* DEFAULT_CONFIG - string for default conf (e.g. "dns files")	   *|

|* 								   *|

\*******************************************************************/

#define DB_LOOKUP_FCT CONCAT3_1 (__nss_, DATABASE_NAME, _lookup2)

#define CONCAT3_1(Pre, Name, Post) CONCAT3_2 (Pre, Name, Post)

#define CONCAT3_2(Pre, Name, Post) Pre##Name##Post

#define DATABASE_NAME_SYMBOL CONCAT3_1 (__nss_, DATABASE_NAME, _database)

#define DATABASE_NAME_STRING STRINGIFY1 (DATABASE_NAME)

#define STRINGIFY1(Name) STRINGIFY2 (Name)

#define STRINGIFY2(Name) #Name

#ifdef ALTERNATE_NAME

#define ALTERNATE_NAME_STRING STRINGIFY1 (ALTERNATE_NAME)

#else

#define ALTERNATE_NAME_STRING NULL

#endif

#ifndef DEFAULT_CONFIG

#define DEFAULT_CONFIG NULL

#endif

int

DB_LOOKUP_FCT (service_user **ni, const char *fct_name, const char *fct2_name,

	       void **fctp)

{

  if (DATABASE_NAME_SYMBOL == NULL

      && __nss_database_lookup (DATABASE_NAME_STRING, ALTERNATE_NAME_STRING,

				DEFAULT_CONFIG, &DATABASE_NAME_SYMBOL) < 0)

    return -1;

  *ni = DATABASE_NAME_SYMBOL;

  return __nss_lookup (ni, fct_name, fct2_name, fctp);

}

libc_hidden_def (DB_LOOKUP_FCT)