1/*
2 * Copyright (c) 2002 Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD$");
30
31#include <err.h>
32#include <stdio.h>
33#include <stdlib.h>
34#include <unistd.h>
35#include <uuid.h>
36
37static void
38usage(void)
39{
40	(void)fprintf(stderr, "usage: uuidgen [-1] [-n count] [-o filename]\n");
41	exit(1);
42}
43
44int
45main(int argc, char *argv[])
46{
47	FILE *fp;
48	uuid_t *store, *uuid;
49	char *p;
50	int ch, count, i, iterate;
51
52	count = -1;	/* no count yet */
53	fp = stdout;	/* default output file */
54	iterate = 0;	/* not one at a time */
55	while ((ch = getopt(argc, argv, "1n:o:")) != -1)
56		switch (ch) {
57		case '1':
58			iterate = 1;
59			break;
60		case 'n':
61			if (count > 0)
62				usage();
63			count = strtol(optarg, &p, 10);
64			if (*p != 0 || count < 1)
65				usage();
66			break;
67		case 'o':
68			if (fp != stdout)
69				errx(1, "multiple output files not allowed");
70			fp = fopen(optarg, "w");
71			if (fp == NULL)
72				err(1, "fopen");
73			break;
74		default:
75			usage();
76		}
77	argv += optind;
78	argc -= optind;
79
80	if (argc)
81		usage();
82
83	if (count == -1)
84		count = 1;
85
86	store = (uuid_t*)malloc(sizeof(uuid_t) * count);
87	if (store == NULL)
88		err(1, "malloc()");
89
90	if (!iterate) {
91		/* Get them all in a single batch */
92		if (uuidgen(store, count) != 0)
93			err(1, "uuidgen()");
94	} else {
95		uuid = store;
96		for (i = 0; i < count; i++) {
97			if (uuidgen(uuid++, 1) != 0)
98				err(1, "uuidgen()");
99		}
100	}
101
102	uuid = store;
103	while (count--) {
104		uuid_to_string(uuid++, &p, NULL);
105		fprintf(fp, "%s\n", p);
106		free(p);
107	}
108
109	free(store);
110	if (fp != stdout)
111		fclose(fp);
112	return (0);
113}
114