/*      $NetBSD: hesinfo.c,v 1.1 1999/01/25 22:45:55 lukem Exp $        */

/* Copyright 1988, 1996 by the Massachusetts Institute of Technology.
 *
 * Permission to use, copy, modify, and distribute this
 * software and its documentation for any purpose and without
 * fee is hereby granted, provided that the above copyright
 * notice appear in all copies and that both that copyright
 * notice and this permission notice appear in supporting
 * documentation, and that the name of M.I.T. not be used in
 * advertising or publicity pertaining to distribution of the
 * software without specific, written prior permission.
 * M.I.T. makes no representations about the suitability of
 * this software for any purpose.  It is provided "as is"
 * without express or implied warranty.
 */

/* This file is a simple driver for the Hesiod library. */


#include <sys/cdefs.h>
#include <err.h>
#include <errno.h>
#include <hesiod.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

int 
main(int argc, char **argv)
{
        char  **list, **p, *bindname, *name, *type;
        int     lflag = 0, errflg = 0, bflag = 0, c;
        void   *context;

        while ((c = getopt(argc, argv, "lb")) != -1) {
                switch (c) {
                case 'l':
                        lflag = 1;
                        break;
                case 'b':
                        bflag = 1;
                        break;
                default:
                        errflg++;
                        break;
                }
        }
        if (argc - optind != 2 || errflg) {
                fprintf(stderr, "usage: hesinfo [-bl] name type\n");
                fprintf(stderr, "\t-l selects long format\n");
                fprintf(stderr, "\t-b also does hes_to_bind conversion\n");
                exit(2);
        }
        name = argv[optind];
        type = argv[optind + 1];

        if (hesiod_init(&context) < 0) {
                if (errno == ENOEXEC)
                        warnx(
                            "hesiod_init: Invalid Hesiod configuration file.");
                else
                        warn("hesiod_init");
        }
        /* Display bind name if requested. */
        if (bflag) {
                if (lflag)
                        printf("hes_to_bind(%s, %s) expands to\n", name, type);
                bindname = hesiod_to_bind(context, name, type);
                if (!bindname) {
                        if (lflag)
                                printf("nothing\n");
                        if (errno == ENOENT)
                                warnx("hesiod_to_bind: Unknown rhs-extension.");
                        else
                                warn("hesiod_to_bind");
                        exit(1);
                }
                printf("%s\n", bindname);
                free(bindname);
                if (lflag)
                        printf("which ");
        }
        if (lflag)
                printf("resolves to\n");

        /* Do the hesiod resolve and check for errors. */
        list = hesiod_resolve(context, name, type);
        if (!list) {
                if (lflag)
                        printf("nothing\n");
                if (errno == ENOENT)
                        warnx("hesiod_resolve: Hesiod name not found.");
                else
                        warn("hesiod_resolve");
                exit(1);
        }
        /* Display the results. */
        for (p = list; *p; p++)
                printf("%s\n", *p);

        hesiod_free_list(context, list);
        hesiod_end(context);
        exit(0);
}