/*      $OpenBSD: getnetnamadr.c,v 1.2 2018/12/15 15:16:12 eric Exp $   */
/*
 * Copyright (c) 2012 Eric Faurot <eric@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#include <err.h>
#include <errno.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "common.h"

static void
usage(void)
{
        extern const char * __progname;

        fprintf(stderr, "usage: %s [-aen] [host...]\n", __progname);
        exit(1);
}

int
main(int argc, char *argv[])
{
        int                      i, ch, nflag = 0;
        struct netent           *n;
        char                    *host;

        while((ch = getopt(argc, argv, "R:en")) !=  -1) {
                switch(ch) {
                case 'R':
                        parseresopt(optarg);
                        break;
                case 'e':
                        long_err += 1;
                        break;
                case 'n':
                        nflag = 1;
                        break;
                default:
                        usage();
                        /* NOTREACHED */
                }
        }
        argc -= optind;
        argv += optind;

        for(i = 0; i < argc; i++) {

                if (i)
                        printf("\n");
                printf("===> \"%s\"\n", argv[i]);
                host = gethostarg(argv[i]);

                errno = 0;
                h_errno = 0;
                gai_errno = 0;
                rrset_errno = 0;

                if (nflag)
                        n = getnetbyname(host);
                else
                        n = getnetbyaddr(inet_network(host), AF_INET);
                if (n)
                        print_netent(n);
                print_errors();
        }

        return (0);
}