/*	$OpenBSD: yp_get_default_domain.c,v 1.10 2022/08/02 16:59:30 deraadt Exp $ */
/*
 * Copyright (c) 1992, 1993 Theo de Raadt <deraadt@theos.com>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>
#include <unistd.h>
#include <limits.h>
#include <rpc/rpc.h>
#include <rpc/xdr.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include "ypinternal.h"
#include "thread_private.h"

_THREAD_PRIVATE_KEY(yp_get_default_domain);

int
yp_get_default_domain(char **domp)
{
	int r = 0;

	_THREAD_PRIVATE_MUTEX_LOCK(yp_get_default_domain);
	*domp = NULL;
	if (_yp_domain[0] == '\0') {
		if (getdomainname(_yp_domain, sizeof _yp_domain) ||
		    _yp_domain[0] == '\0') {
			r = YPERR_NODOM;
			goto out;
		}
	}
	*domp = _yp_domain;
out:
	_THREAD_PRIVATE_MUTEX_UNLOCK(yp_get_default_domain);
	return r;
}
DEF_WEAK(yp_get_default_domain);