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/* Copyright (C) 2018 Causal Agent June <june@causal.agency>
*
* 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 <sysexits.h>
#include <unistd.h>
int main(int argc, char *argv[]) {
if (argc < 2) errx(EX_USAGE, "missing public id");
uint32_t id[4];
char public[10 + 32 + 1];
char private[8 + 32 + 1];
arc4random_buf(id, sizeof(id));
snprintf(public, sizeof(public), "public/%s", argv[1]);
snprintf(
private, sizeof(private),
"private/%08x%08x%08x%08x",
id[0], id[1], id[2], id[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", id[0], id[1], id[2], id[3]);
return EX_OK;
}
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