/*
 * 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 (c) 1994-2000 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <netdb.h>
#include "getent.h"

static int
puthostent(const struct hostent *hp, FILE *fp)
{
        char **p;
        int rc = 0;

        if (hp == NULL) {
                return (1);
        }

        for (p = hp->h_addr_list; *p != 0; p++) {
                struct in_addr in;
                char **q;

                (void) memcpy((char *)&in.s_addr, *p, sizeof (in));
                if (fprintf(fp, "%s\t%s",
                        inet_ntoa(in), hp->h_name) == EOF)
                        rc = 1;
                for (q = hp->h_aliases; *q != 0; q++) {
                        if (fprintf(fp, " %s", *q) == EOF)
                                rc = 1;
                }
                if (putc('\n', fp) == EOF)
                        rc = 1;
        }
        return (rc);
}

/*
 * gethostbyname/addr - get entries from hosts database
 */
int
dogethost(const char **list)
{
        struct hostent *hp;
        int rc = EXC_SUCCESS;

        if (list == NULL || *list == NULL) {
                while ((hp = gethostent()) != NULL)
                        (void) puthostent(hp, stdout);
        } else {
                for (; *list != NULL; list++) {
                        struct in_addr addr;
                        addr.s_addr = inet_addr(*list);
                        if (addr.s_addr != (in_addr_t)-1)
                                hp = gethostbyaddr((char *)&addr,
                                        sizeof (addr), AF_INET);
                        else
                                hp = gethostbyname(*list);
                        if (hp == NULL)
                                rc = EXC_NAME_NOT_FOUND;
                        else
                                (void) puthostent(hp, stdout);
                }
        }

        return (rc);
}