mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/* Copyright (C) 1991-2020 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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <pwd.h>
|
|
|
|
#define flockfile(s) _IO_flockfile (s)
|
|
#define funlockfile(s) _IO_funlockfile (s)
|
|
|
|
/* Define a line parsing function using the common code
|
|
used in the nss_files module. */
|
|
|
|
#define STRUCTURE passwd
|
|
#define ENTNAME pwent
|
|
struct pwent_data {};
|
|
|
|
#include <nss/nss_files/files-parse.c>
|
|
LINE_PARSER
|
|
(,
|
|
STRING_FIELD (result->pw_name, ISCOLON, 0);
|
|
if (line[0] == '\0'
|
|
&& (result->pw_name[0] == '+' || result->pw_name[0] == '-'))
|
|
{
|
|
/* This a special case. We allow lines containing only a `+' sign
|
|
since this is used for nss_compat. All other services will
|
|
reject this entry later. Initialize all other fields now. */
|
|
result->pw_passwd = NULL;
|
|
result->pw_uid = 0;
|
|
result->pw_gid = 0;
|
|
result->pw_gecos = NULL;
|
|
result->pw_dir = NULL;
|
|
result->pw_shell = NULL;
|
|
}
|
|
else
|
|
{
|
|
STRING_FIELD (result->pw_passwd, ISCOLON, 0);
|
|
if (result->pw_name[0] == '+' || result->pw_name[0] == '-')
|
|
{
|
|
INT_FIELD_MAYBE_NULL (result->pw_uid, ISCOLON, 0, 10, , 0)
|
|
INT_FIELD_MAYBE_NULL (result->pw_gid, ISCOLON, 0, 10, , 0)
|
|
}
|
|
else
|
|
{
|
|
INT_FIELD (result->pw_uid, ISCOLON, 0, 10,)
|
|
INT_FIELD (result->pw_gid, ISCOLON, 0, 10,)
|
|
}
|
|
STRING_FIELD (result->pw_gecos, ISCOLON, 0);
|
|
STRING_FIELD (result->pw_dir, ISCOLON, 0);
|
|
result->pw_shell = line;
|
|
}
|
|
)
|
|
|
|
|
|
/* Read one entry from the given stream. */
|
|
int
|
|
__fgetpwent_r (FILE *stream, struct passwd *resbuf, char *buffer,
|
|
size_t buflen, struct passwd **result)
|
|
{
|
|
char *p;
|
|
|
|
flockfile (stream);
|
|
do
|
|
{
|
|
buffer[buflen - 1] = '\xff';
|
|
p = fgets_unlocked (buffer, buflen, stream);
|
|
if (p == NULL && feof_unlocked (stream))
|
|
{
|
|
funlockfile (stream);
|
|
*result = NULL;
|
|
__set_errno (ENOENT);
|
|
return errno;
|
|
}
|
|
if (p == NULL || buffer[buflen - 1] != '\xff')
|
|
{
|
|
funlockfile (stream);
|
|
*result = NULL;
|
|
__set_errno (ERANGE);
|
|
return errno;
|
|
}
|
|
|
|
/* Skip leading blanks. */
|
|
while (isspace (*p))
|
|
++p;
|
|
} while (*p == '\0' || *p == '#' /* Ignore empty and comment lines. */
|
|
/* Parse the line. If it is invalid, loop to
|
|
get the next line of the file to parse. */
|
|
|| ! parse_line (p, resbuf, (void *) buffer, buflen, &errno));
|
|
|
|
funlockfile (stream);
|
|
|
|
*result = resbuf;
|
|
return 0;
|
|
}
|
|
weak_alias (__fgetpwent_r, fgetpwent_r)
|