mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 07:20:11 +00:00
117 lines
2.8 KiB
C
117 lines
2.8 KiB
C
/* Copyright (C) 1991, 1992 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <ansidecl.h>
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <pwd.h>
|
|
#include <sys/types.h>
|
|
|
|
|
|
/* This is the function that all the others are based on.
|
|
The format of the password file is known only here. */
|
|
|
|
/* Structure containing info kept by each __pwdread caller. */
|
|
typedef struct
|
|
{
|
|
char *buf;
|
|
size_t buflen;
|
|
struct passwd p;
|
|
} pwdread_info;
|
|
|
|
|
|
/* Return a chunk of memory containing a pre-initialized `pwdread_info'. */
|
|
PTR
|
|
DEFUN_VOID(__pwdalloc)
|
|
{
|
|
pwdread_info *info = (PTR) malloc (sizeof(pwdread_info));
|
|
if (info == NULL)
|
|
return NULL;
|
|
info->buf = NULL;
|
|
info->buflen = 0;
|
|
return info;
|
|
}
|
|
|
|
/* Read a password entry from STREAM, filling in P. */
|
|
struct passwd *
|
|
DEFUN(__pwdread, (stream, p), FILE *stream AND PTR CONST p)
|
|
{
|
|
register pwdread_info *CONST info = (pwdread_info *) p;
|
|
char *start, *end;
|
|
|
|
/* Idiocy checks. */
|
|
if (stream == NULL)
|
|
{
|
|
errno = EINVAL;
|
|
return NULL;
|
|
}
|
|
|
|
do
|
|
if (__getline (&info->buf, &info->buflen, stream) == -1)
|
|
return NULL;
|
|
while (info->buf[0] == '#');
|
|
|
|
start = info->buf;
|
|
end = strchr (start, ':');
|
|
if (end == NULL)
|
|
return NULL;
|
|
*end = '\0';
|
|
info->p.pw_name = start;
|
|
|
|
start = end + 1;
|
|
end = strchr (start, ':');
|
|
if (end == NULL)
|
|
return NULL;
|
|
*end = '\0';
|
|
info->p.pw_passwd = start;
|
|
|
|
info->p.pw_uid = (uid_t) strtol (end + 1, &end, 10);
|
|
if (*end != ':')
|
|
return NULL;
|
|
info->p.pw_gid = (gid_t) strtol (end + 1, &end, 10);
|
|
if (*end != ':')
|
|
return NULL;
|
|
|
|
start = end + 1;
|
|
end = strchr (start, ':');
|
|
if (end == NULL)
|
|
return NULL;
|
|
*end = '\0';
|
|
info->p.pw_gecos = start;
|
|
|
|
start = end + 1;
|
|
end = strchr (start, ':');
|
|
if (end == NULL)
|
|
return NULL;
|
|
*end = '\0';
|
|
info->p.pw_dir = start;
|
|
|
|
start = end + 1;
|
|
end = strchr (start, '\n');
|
|
if (end == NULL)
|
|
return NULL;
|
|
*end = '\0';
|
|
info->p.pw_shell = start;
|
|
|
|
return &info->p;
|
|
}
|