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cal: Add test, all are checked against ncal
[thirdparty/util-linux.git] / login-utils / ch-common.c
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1/*
2 * chfn and chsh shared functions
3 *
4 * this program is free software. you can redistribute it and
5 * modify it under the terms of the gnu general public license.
6 * there is no warranty.
7 */
8
9#include <ctype.h>
10#include <string.h>
11
12#include "c.h"
13#include "nls.h"
14
15#include "ch-common.h"
16
17/*
18 * illegal_passwd_chars () -
19 * check whether a string contains illegal characters
20 */
21int illegal_passwd_chars(const char *str)
22{
23 const char illegal[] = ",:=\"\n";
24 const size_t len = strlen(str);
25 size_t i;
26
27 if (strpbrk(str, illegal))
28 return 1;
29 for (i = 0; i < len; i++) {
30 if (iscntrl(str[i]))
31 return 1;
32 }
33 return 0;
34}