1 /* Copyright (C) 2015-2022 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <nss.h>
19 #include <string.h>
20
21 const char __nss_invalid_field_characters[] = NSS_INVALID_FIELD_CHARACTERS;
22
23 /* Check that VALUE is either NULL or a NUL-terminated string which
24 does not contain characters not permitted in NSS database
25 fields. */
26 _Bool
__nss_valid_field(const char * value)27 __nss_valid_field (const char *value)
28 {
29 return value == NULL
30 || strpbrk (value, __nss_invalid_field_characters) == NULL;
31 }
32