1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/* vi: set sw=4 ts=4: */
/*
* Mini uuidgen implementation for busybox
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
//config:config UUIDGEN
//config: bool "uuidgen (1.1 kb)"
//config: default y
//config: help
//config: Generate a UUID (Universally Unique Identifier) in RFC 4122 format.
//applet:IF_UUIDGEN(APPLET_NOFORK(uuidgen, uuidgen, BB_DIR_USR_BIN, BB_SUID_DROP, uuidgen))
//kbuild:lib-$(CONFIG_UUIDGEN) += uuidgen.o
//usage:#define uuidgen_trivial_usage
//usage: ""
//usage:#define uuidgen_full_usage "\n\n"
//usage: "Generate a random UUID"
/* util-linux 2.41.1:
* -r, --random generate random-based uuid
* -t, --time generate time-based uuid
* -n, --namespace <ns> generate hash-based uuid in this namespace
* available namespaces: @dns @url @oid @x500
* -N, --name <name> generate hash-based uuid from this name
* -m, --md5 generate md5 hash
* -C, --count <num> generate more uuids in loop
* -s, --sha1 generate sha1 hash
* -6, --time-v6 generate time-based v6 uuid
* -7, --time-v7 generate time-based v7 uuid
* -x, --hex interpret name as hex string
* manpage:
* "By default uuidgen will generate a random-based UUID if a high-quality random number generator is present.
* Otherwise, it will choose a time-based UUID."
*/
#include "libbb.h"
/* This is a NOFORK applet. Be very careful! */
int uuidgen_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int uuidgen_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
{
char str37[37];
uint8_t uuid[16];
/* support/ignore -r (--random) */
getopt32(argv, "^" "r" "\0" "=0"/* no args!*/);
generate_uuid(uuid);
format_uuid_DCE_37_chars(str37, uuid);
puts(str37);
fflush_stdout_and_exit_SUCCESS();
}
|
