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/* See LICENSE file for copyright and license details. */
#include <sys/mman.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "arg.h"
char *argv0;
static void
usage(void)
{
fprintf(stderr, "usage: %s [-r] user key-name [crypt-parameters]\n", argv0);
exit(1);
}
int
main(int argc, char *argv[])
{
const char *user;
const char *keyname;
const char *parameters;
int allow_replace = 0;
int failed = 0;
ARGBEGIN {
case 'r':
allow_replace = 1;
break;
default:
usage();
} ARGEND;
if (argc < 2 || argc > 3)
usage();
user = argv[0];
keyname = argv[1];
parameters = argv[2];
if (!user[0] || user[0] == '.' || strchr(user, '/') || strchr(user, '~')) {
fprintf(stderr, "%s: bad user name specified: %s\n", argv0, user);
failed = 1;
}
if (keyname[strcspn(keyname, " \t\f\n\r\v")]) {
fprintf(stderr, "%s: bad key name specified: %s, includes whitespace\n", argv0, keyname);
failed = 1;
}
if (isatty(STDIN_FILENO)) {
fprintf(stderr, "%s: standard input must not be a TTY.\n", argv0);
failed = 1;
}
if (failed)
return 1;
if (mlockall(MCL_CURRENT | MCL_FUTURE)) {
fprintf(stderr, "%s: mlockall MCL_CURRENT|MCL_FUTURE: %s\n", argv0, strerror(errno));
exit(1);
}
/* TODO hash input */
/* TODO add or replace key */
/* TODO save changes, mode shall be 0600 */
return 0;
}
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