/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 *	nisplus/gethostent6.c -- NIS+ backend for nsswitch "ipnodes" database
 */

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include <string.h>
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include "nisplus_common.h"
#include "nisplus_tables.h"
#include <arpa/inet.h>
#include <inet/ip6.h>

static nss_status_t
getbyname(be, a)
	nisplus_backend_ptr_t	be;
	void			*a;
{
	nss_XbyY_args_t		*argp = (nss_XbyY_args_t *)a;
	nss_status_t		res;

	/*
	 * Don't have to do anything for case-insensitivity;  the NIS+ table
	 * has the right flags enabled in the 'cname' and 'name' columns.
	 */
	res = _nss_nisplus_expand_lookup(be, argp, HOST_TAG_NAME,
		argp->key.ipnode.name, IPNODES_TBLNAME);
	if (res != NSS_SUCCESS)
		argp->h_errno = __nss2herrno(res);
	return (res);
}

static nss_status_t
getbyaddr(be, a)
	nisplus_backend_ptr_t	be;
	void			*a;
{
	nss_XbyY_args_t		*argp = (nss_XbyY_args_t *)a;
	struct in6_addr		addr;
	char			addrbuf[INET6_ADDRSTRLEN + 1];
	nss_status_t		res;

	if (argp->key.hostaddr.type != AF_INET6 ||
			argp->key.hostaddr.len  != sizeof (addr)) {
		return (NSS_NOTFOUND);
	}

	(void) memcpy(&addr, argp->key.hostaddr.addr, sizeof (addr));
	if (IN6_IS_ADDR_V4MAPPED(&addr)) {
		if (inet_ntop(AF_INET, (void *) &addr.s6_addr[12],
				(void *)addrbuf, INET_ADDRSTRLEN) == NULL) {
			return (NSS_NOTFOUND);
		}
	} else {
		if (inet_ntop(AF_INET6, (void *)&addr, (void *)addrbuf,
				INET6_ADDRSTRLEN) == NULL)
			return (NSS_NOTFOUND);
	}

	res = _nss_nisplus_expand_lookup(be, argp, HOST_TAG_ADDR, addrbuf,
		IPNODES_TBLNAME);
	if (res != NSS_SUCCESS)
		argp->h_errno = __nss2herrno(res);
	return (res);
}


/*
 * Returns NSS_STR_PARSE_{SUCCESS, ERANGE, PARSE}
 */
static int
nis_object2str(nobj, obj, be, argp)
	int			nobj;
	nis_object		*obj;
	nisplus_backend_ptr_t	be;
	nss_XbyY_args_t		*argp;
{
	return (nis_hosts_object2str(nobj, obj, be, argp, AF_INET6));
}


static nisplus_backend_op_t ipnodes_ops[] = {
	_nss_nisplus_destr,
	_nss_nisplus_endent,
	_nss_nisplus_setent,
	_nss_nisplus_getent,
	getbyname,
	getbyaddr
};

/*ARGSUSED*/
nss_backend_t *
_nss_nisplus_ipnodes_constr(dummy1, dummy2, dummy3)
	const char	*dummy1, *dummy2, *dummy3;
{
	return (_nss_nisplus_constr(ipnodes_ops,
		    sizeof (ipnodes_ops) / sizeof (ipnodes_ops[0]),
				    IPNODES_TBLNAME, nis_object2str));
}