hesinfo.c revision 1.5 
1/*	$NetBSD: hesinfo.c,v 1.5 2016/09/05 00:40:28 sevan 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 1.5 2016/09/05 00:40:28 sevan 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
39main(int argc, char **argv)
40{
41	char  **list, **p, *bindname, *name, *type;
42	int     lflag = 0, errflg = 0, bflag = 0, c;
43	void   *context;
44
45	while ((c = getopt(argc, argv, "lb")) != -1) {
46		switch (c) {
47		case 'l':
48			lflag = 1;
49			break;
50		case 'b':
51			bflag = 1;
52			break;
53		default:
54			errflg++;
55			break;
56		}
57	}
58	if (argc - optind != 2 || errflg) {
59		fprintf(stderr, "usage: %s [-bl] name type\n", getprogname());
60		fprintf(stderr, "\t-l selects long format\n");
61		fprintf(stderr, "\t-b also does hes_to_bind conversion\n");
62		exit(2);
63	}
64	name = argv[optind];
65	type = argv[optind + 1];
66
67	if (hesiod_init(&context) < 0) {
68		if (errno == ENOEXEC)
69			warnx(
70			    "hesiod_init: Invalid Hesiod configuration file.");
71		else
72			warn("hesiod_init");
73	}
74	/* Display bind name if requested. */
75	if (bflag) {
76		if (lflag)
77			printf("hes_to_bind(%s, %s) expands to\n", name, type);
78		bindname = hesiod_to_bind(context, name, type);
79		if (!bindname) {
80			if (lflag)
81				printf("nothing\n");
82			if (errno == ENOENT)
83				warnx("hesiod_to_bind: Unknown rhs-extension.");
84			else
85				warn("hesiod_to_bind");
86			exit(1);
87		}
88		printf("%s\n", bindname);
89		free(bindname);
90		if (lflag)
91			printf("which ");
92	}
93	if (lflag)
94		printf("resolves to\n");
95
96	/* Do the hesiod resolve and check for errors. */
97	list = hesiod_resolve(context, name, type);
98	if (!list) {
99		if (lflag)
100			printf("nothing\n");
101		if (errno == ENOENT)
102			warnx("hesiod_resolve: Hesiod name not found.");
103		else
104			warn("hesiod_resolve");
105		exit(1);
106	}
107	/* Display the results. */
108	for (p = list; *p; p++)
109		printf("%s\n", *p);
110
111	hesiod_free_list(context, list);
112	hesiod_end(context);
113	exit(0);
114}
115