/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 1994,2002 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <stdio.h>
#include <stdlib.h>
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include "getent.h"

static int
putethers(const char *hostname, const struct ether_addr *e, FILE *fp)
{
        if (hostname == NULL || e == NULL)
                return (EXC_SYNTAX);

        if (fprintf(fp, "%-20s %s\n", hostname, ether_ntoa(e)) == EOF)
                return (EXC_SYNTAX); /* for lack of a better error code */
        return (EXC_SUCCESS);
}

/*
 * ether_ntohost/hostton - get entries from ethers database
 */
int
dogetethers(const char **list)
{
        int rc = EXC_SUCCESS;

        if (list == NULL || *list == NULL) {
                rc = EXC_ENUM_NOT_SUPPORTED;
        } else {
                for (; *list != NULL; list++) {
                        struct ether_addr ea;
                        struct ether_addr *e;
                        char hostname[MAXHOSTNAMELEN + 1];
                        char *hp;
                        int     retval;

                        if ((e = ether_aton(*list)) != NULL) {
                                hp = hostname;
                                retval = ether_ntohost(hp, e);
                        } else {
                                hp = (char *)*list;
                                e = &ea;
                                retval = ether_hostton(hp, e);
                        }
                        if (retval != 0)
                                rc = EXC_NAME_NOT_FOUND;
                        else
                                rc = putethers(hp, e, stdout);
                }
        }

        return (rc);
}