| /* Copyright (C) 1991-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <errno.h> |
| #include <stdio.h> |
| #include <pwd.h> |
| #include <nss.h> |
| |
| #define _S(x) x ?: "" |
| |
| /* Write an entry to the given stream. This must know the format of |
| the password file. If the input contains invalid characters, |
| return EINVAL, or replace them with spaces (if they are contained |
| in the GECOS field). */ |
| int |
| putpwent (const struct passwd *p, FILE *stream) |
| { |
| if (p == NULL || stream == NULL |
| || p->pw_name == NULL || !__nss_valid_field (p->pw_name) |
| || !__nss_valid_field (p->pw_passwd) |
| || !__nss_valid_field (p->pw_dir) |
| || !__nss_valid_field (p->pw_shell)) |
| { |
| __set_errno (EINVAL); |
| return -1; |
| } |
| |
| int ret; |
| char *gecos_alloc; |
| const char *gecos = __nss_rewrite_field (p->pw_gecos, &gecos_alloc); |
| |
| if (gecos == NULL) |
| return -1; |
| |
| if (p->pw_name[0] == '+' || p->pw_name[0] == '-') |
| ret = fprintf (stream, "%s:%s:::%s:%s:%s\n", |
| p->pw_name, _S (p->pw_passwd), |
| gecos, _S (p->pw_dir), _S (p->pw_shell)); |
| else |
| ret = fprintf (stream, "%s:%s:%lu:%lu:%s:%s:%s\n", |
| p->pw_name, _S (p->pw_passwd), |
| (unsigned long int) p->pw_uid, |
| (unsigned long int) p->pw_gid, |
| gecos, _S (p->pw_dir), _S (p->pw_shell)); |
| |
| free (gecos_alloc); |
| if (ret >= 0) |
| ret = 0; |
| return ret; |
| } |