hesinfo.c revision 1.2 
1/*	$NetBSD: hesinfo.c,v 1.2 2001/02/19 23:03:47 cgd 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#ifndef lint
23#if 0
24static char rcsid[] = "#Id: hesinfo.c,v 1.8 1996/12/08 21:29:54 ghudson Exp #";
25#else
26__RCSID("$NetBSD: hesinfo.c,v 1.2 2001/02/19 23:03:47 cgd Exp $");
27#endif
28#endif /* not lint */
29
30#include <err.h>
31#include <errno.h>
32#include <hesiod.h>
33#include <stdio.h>
34#include <stdlib.h>
35#include <string.h>
36#include <unistd.h>
37
38int	main __P((int, char **));
39
40int
41main(argc, argv)
42	int	argc;
43	char  **argv;
44{
45	char  **list, **p, *bindname, *name, *type;
46	int     lflag = 0, errflg = 0, bflag = 0, c;
47	void   *context;
48
49	while ((c = getopt(argc, argv, "lb")) != -1) {
50		switch (c) {
51		case 'l':
52			lflag = 1;
53			break;
54		case 'b':
55			bflag = 1;
56			break;
57		default:
58			errflg++;
59			break;
60		}
61	}
62	if (argc - optind != 2 || errflg) {
63		fprintf(stderr, "Usage: %s [-bl] name type\n", getprogname());
64		fprintf(stderr, "\t-l selects long format\n");
65		fprintf(stderr, "\t-b also does hes_to_bind conversion\n");
66		exit(2);
67	}
68	name = argv[optind];
69	type = argv[optind + 1];
70
71	if (hesiod_init(&context) < 0) {
72		if (errno == ENOEXEC)
73			warnx(
74			    "hesiod_init: Invalid Hesiod configuration file.");
75		else
76			warn("hesiod_init");
77	}
78	/* Display bind name if requested. */
79	if (bflag) {
80		if (lflag)
81			printf("hes_to_bind(%s, %s) expands to\n", name, type);
82		bindname = hesiod_to_bind(context, name, type);
83		if (!bindname) {
84			if (lflag)
85				printf("nothing\n");
86			if (errno == ENOENT)
87				warnx("hesiod_to_bind: Unknown rhs-extension.");
88			else
89				warn("hesiod_to_bind");
90			exit(1);
91		}
92		printf("%s\n", bindname);
93		free(bindname);
94		if (lflag)
95			printf("which ");
96	}
97	if (lflag)
98		printf("resolves to\n");
99
100	/* Do the hesiod resolve and check for errors. */
101	list = hesiod_resolve(context, name, type);
102	if (!list) {
103		if (lflag)
104			printf("nothing\n");
105		if (errno == ENOENT)
106			warnx("hesiod_resolve: Hesiod name not found.");
107		else
108			warn("hesiod_resolve");
109		exit(1);
110	}
111	/* Display the results. */
112	for (p = list; *p; p++)
113		printf("%s\n", *p);
114
115	hesiod_free_list(context, list);
116	hesiod_end(context);
117	exit(0);
118}
119