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
|
/* Copyright (c) 2018, Curtis McEnroe <programble@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <err.h>
#include <fcntl.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/syslimits.h>
#include <sysexits.h>
#include <unistd.h>
int main(int argc, char *argv[]) {
if (argc < 2) return EX_USAGE;
uint32_t key[4];
char public[PATH_MAX];
char private[PATH_MAX];
snprintf(public, sizeof(public), "public/%s", argv[1]);
arc4random_buf(key, sizeof(key));
snprintf(
private, sizeof(private),
"private/%08x%08x%08x%08x",
key[0], key[1], key[2], key[3]
);
int fd = open(public, O_CREAT | O_EXCL, 0644);
if (fd < 0) err(EX_CANTCREAT, "%s", public);
snprintf(public, sizeof(public), "../public/%s", argv[1]);
int error = symlink(public, private);
if (error) err(EX_CANTCREAT, "%s", private);
printf("%08x%08x%08x%08x\n", key[0], key[1], key[2], key[3]);
return EX_OK;
}
|