Merge branch 'vendor/HOSTAPD'
[dragonfly.git] / bin / uuidgen / uuidgen.c
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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 * $FreeBSD: src/usr.bin/uuidgen/uuidgen.c,v 1.3 2003/03/15 02:27:10 marcel Exp $
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27 */
28
29#include <err.h>
30#include <stdio.h>
31#include <stdlib.h>
32#include <unistd.h>
33#include <uuid.h>
34
35static void
36usage(void)
37{
38 (void)fprintf(stderr, "usage: uuidgen [-1] [-n count] [-o filename]\n");
39 exit(1);
40}
41
42int
43main(int argc, char *argv[])
44{
45 FILE *fp;
46 uuid_t *store, *uuid;
47 char *p;
48 int ch, count, i, iterate;
49
50 count = -1; /* no count yet */
51 fp = stdout; /* default output file */
52 iterate = 0; /* not one at a time */
53 while ((ch = getopt(argc, argv, "1n:o:")) != -1)
54 switch (ch) {
55 case '1':
56 iterate = 1;
57 break;
58 case 'n':
59 if (count > 0)
60 usage();
61 count = strtol(optarg, &p, 10);
62 if (*p != 0 || count < 1)
63 usage();
64 break;
65 case 'o':
66 if (fp != stdout)
67 errx(1, "multiple output files not allowed");
68 fp = fopen(optarg, "w");
69 if (fp == NULL)
70 err(1, "fopen");
71 break;
72 default:
73 usage();
74 }
75 argv += optind;
76 argc -= optind;
77
78 if (argc)
79 usage();
80
81 if (count == -1)
82 count = 1;
83
84 store = (uuid_t*)malloc(sizeof(uuid_t) * count);
85 if (store == NULL)
86 err(1, "malloc()");
87
88 if (!iterate) {
89 /* Get them all in a single batch */
90 if (uuidgen(store, count) != 0)
91 err(1, "uuidgen()");
92 } else {
93 uuid = store;
94 for (i = 0; i < count; i++) {
95 if (uuidgen(uuid++, 1) != 0)
96 err(1, "uuidgen()");
97 }
98 }
99
100 uuid = store;
101 while (count--) {
102 uuid_to_string(uuid++, &p, NULL);
103 fprintf(fp, "%s\n", p);
104 free(p);
105 }
106
107 free(store);
108 if (fp != stdout)
109 fclose(fp);
110 return (0);
111}