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2b778ceb | 1 | /* Copyright (C) 1991-2021 Free Software Foundation, Inc. |
c84142e8 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
c84142e8 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 8 | |
c84142e8 UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
28f540f4 | 17 | |
28f540f4 RM |
18 | #include <errno.h> |
19 | #include <stdio.h> | |
20 | #include <pwd.h> | |
01bd6251 | 21 | #include <stdlib.h> |
676599b3 | 22 | #include <nss.h> |
28f540f4 | 23 | |
537e7234 | 24 | #define _S(x) x ?: "" |
28f540f4 | 25 | |
676599b3 FW |
26 | /* Write an entry to the given stream. This must know the format of |
27 | the password file. If the input contains invalid characters, | |
28 | return EINVAL, or replace them with spaces (if they are contained | |
29 | in the GECOS field). */ | |
28f540f4 | 30 | int |
676599b3 | 31 | putpwent (const struct passwd *p, FILE *stream) |
28f540f4 | 32 | { |
676599b3 FW |
33 | if (p == NULL || stream == NULL |
34 | || p->pw_name == NULL || !__nss_valid_field (p->pw_name) | |
35 | || !__nss_valid_field (p->pw_passwd) | |
36 | || !__nss_valid_field (p->pw_dir) | |
37 | || !__nss_valid_field (p->pw_shell)) | |
28f540f4 | 38 | { |
c4029823 | 39 | __set_errno (EINVAL); |
28f540f4 RM |
40 | return -1; |
41 | } | |
42 | ||
676599b3 FW |
43 | int ret; |
44 | char *gecos_alloc; | |
45 | const char *gecos = __nss_rewrite_field (p->pw_gecos, &gecos_alloc); | |
46 | ||
47 | if (gecos == NULL) | |
48 | return -1; | |
49 | ||
537e7234 | 50 | if (p->pw_name[0] == '+' || p->pw_name[0] == '-') |
676599b3 FW |
51 | ret = fprintf (stream, "%s:%s:::%s:%s:%s\n", |
52 | p->pw_name, _S (p->pw_passwd), | |
53 | gecos, _S (p->pw_dir), _S (p->pw_shell)); | |
537e7234 | 54 | else |
676599b3 FW |
55 | ret = fprintf (stream, "%s:%s:%lu:%lu:%s:%s:%s\n", |
56 | p->pw_name, _S (p->pw_passwd), | |
57 | (unsigned long int) p->pw_uid, | |
58 | (unsigned long int) p->pw_gid, | |
59 | gecos, _S (p->pw_dir), _S (p->pw_shell)); | |
60 | ||
61 | free (gecos_alloc); | |
62 | if (ret >= 0) | |
63 | ret = 0; | |
64 | return ret; | |
28f540f4 | 65 | } |