mirror of
https://gitlab.com/sortix/sortix.git
synced 2023-02-13 20:55:38 -05:00
56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
|
/*******************************************************************************
|
||
|
|
|
||
|
|
Copyright(C) Jonas 'Sortie' Termansen 2013.
|
||
|
|
|
||
|
|
This file is part of the Sortix C Library.
|
||
|
|
|
||
|
|
The Sortix 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 3 of the License, or (at your
|
||
|
|
option) any later version.
|
||
|
|
|
||
|
|
The Sortix 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 Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
pwd/getpwnam_r.cpp
|
||
|
|
Searchs the passwd database for a user with the given username.
|
||
|
|
|
||
|
|
*******************************************************************************/
|
||
|
|
|
||
|
|
#include <errno.h>
|
||
|
|
#include <pwd.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
extern "C"
|
||
|
|
int getpwnam_r(const char* restrict username,
|
||
|
|
struct passwd* restrict ret,
|
||
|
|
char* restrict buf,
|
||
|
|
size_t buflen,
|
||
|
|
struct passwd** restrict ret_ptr)
|
||
|
|
{
|
||
|
|
if ( !ret_ptr )
|
||
|
|
return errno = EINVAL;
|
||
|
|
if ( !username || !ret || !buf )
|
||
|
|
return *ret_ptr = NULL, errno = EINVAL;
|
||
|
|
FILE* fpasswd = openpw();
|
||
|
|
if ( !fpasswd )
|
||
|
|
return *ret_ptr = NULL, errno;
|
||
|
|
int errnum;
|
||
|
|
while ( (errnum = fgetpwent_r(fpasswd, ret, buf, buflen, ret_ptr)) == 0 &&
|
||
|
|
*ret_ptr )
|
||
|
|
{
|
||
|
|
if ( strcmp((*ret_ptr)->pw_name, username) != 0 )
|
||
|
|
continue;
|
||
|
|
fclose(fpasswd);
|
||
|
|
return *ret_ptr = *ret_ptr, 0;
|
||
|
|
}
|
||
|
|
fclose(fpasswd);
|
||
|
|
return *ret_ptr = NULL, errnum ? errnum : errno = ENOUSER;
|
||
|
|
}
|