hesinfo.c revision 99112 
1/*	$NetBSD: hesinfo.c,v 1.1 1999/01/25 22:45:55 lukem Exp $	*/
2
3/* Copyright 1988, 1996 by the Massachusetts Institute of Technology.
4 *
5 * Permission to use, copy, modify, and distribute this
6 * software and its documentation for any purpose and without
7 * fee is hereby granted, provided that the above copyright
8 * notice appear in all copies and that both that copyright
9 * notice and this permission notice appear in supporting
10 * documentation, and that the name of M.I.T. not be used in
11 * advertising or publicity pertaining to distribution of the
12 * software without specific, written prior permission.
13 * M.I.T. makes no representations about the suitability of
14 * this software for any purpose.  It is provided "as is"
15 * without express or implied warranty.
16 */
17
18/* This file is a simple driver for the Hesiod library. */
19
20
21#include <sys/cdefs.h>
22__FBSDID("$FreeBSD: head/usr.bin/hesinfo/hesinfo.c 99112 2002-06-30 05:25:07Z obrien $");
23
24#include <err.h>
25#include <errno.h>
26#include <hesiod.h>
27#include <stdio.h>
28#include <stdlib.h>
29#include <string.h>
30#include <unistd.h>
31
32int	main(int, char **);
33
34int
35main(argc, argv)
36	int	argc;
37	char  **argv;
38{
39	char  **list, **p, *bindname, *name, *type;
40	int     lflag = 0, errflg = 0, bflag = 0, c;
41	void   *context;
42
43	while ((c = getopt(argc, argv, "lb")) != -1) {
44		switch (c) {
45		case 'l':
46			lflag = 1;
47			break;
48		case 'b':
49			bflag = 1;
50			break;
51		default:
52			errflg++;
53			break;
54		}
55	}
56	if (argc - optind != 2 || errflg) {
57		fprintf(stderr, "usage: hesinfo [-bl] name type\n");
58		fprintf(stderr, "\t-l selects long format\n");
59		fprintf(stderr, "\t-b also does hes_to_bind conversion\n");
60		exit(2);
61	}
62	name = argv[optind];
63	type = argv[optind + 1];
64
65	if (hesiod_init(&context) < 0) {
66		if (errno == ENOEXEC)
67			warnx(
68			    "hesiod_init: Invalid Hesiod configuration file.");
69		else
70			warn("hesiod_init");
71	}
72	/* Display bind name if requested. */
73	if (bflag) {
74		if (lflag)
75			printf("hes_to_bind(%s, %s) expands to\n", name, type);
76		bindname = hesiod_to_bind(context, name, type);
77		if (!bindname) {
78			if (lflag)
79				printf("nothing\n");
80			if (errno == ENOENT)
81				warnx("hesiod_to_bind: Unknown rhs-extension.");
82			else
83				warn("hesiod_to_bind");
84			exit(1);
85		}
86		printf("%s\n", bindname);
87		free(bindname);
88		if (lflag)
89			printf("which ");
90	}
91	if (lflag)
92		printf("resolves to\n");
93
94	/* Do the hesiod resolve and check for errors. */
95	list = hesiod_resolve(context, name, type);
96	if (!list) {
97		if (lflag)
98			printf("nothing\n");
99		if (errno == ENOENT)
100			warnx("hesiod_resolve: Hesiod name not found.");
101		else
102			warn("hesiod_resolve");
103		exit(1);
104	}
105	/* Display the results. */
106	for (p = list; *p; p++)
107		printf("%s\n", *p);
108
109	hesiod_free_list(context, list);
110	hesiod_end(context);
111	exit(0);
112}
113