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/* Copyright (C) 1997, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <nss.h>
#include <grp.h>
#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <bits/libc-lock.h>
#include <rpcsvc/nis.h>
#include "nss-nisplus.h"
#include "nisplus-parser.h"
__libc_lock_define_initialized (static, lock);
static nis_result *result;
static unsigned long next_entry;
static nis_name tablename_val;
static u_long tablename_len;
static enum nss_status
_nss_create_tablename (int *errnop)
{
if (tablename_val == NULL)
{
char buf [40 + strlen (nis_local_directory ())];
char *p;
p = __stpcpy (buf, "group.org_dir.");
p = __stpcpy (p, nis_local_directory ());
tablename_val = __strdup (buf);
if (tablename_val == NULL)
{
*errnop = errno;
return NSS_STATUS_TRYAGAIN;
}
tablename_len = strlen (tablename_val);
}
return NSS_STATUS_SUCCESS;
}
static enum nss_status
internal_setgrent (void)
{
enum nss_status status;
int err;
if (result)
nis_freeresult (result);
result = NULL;
next_entry = 0;
if (tablename_val == NULL)
if (_nss_create_tablename (&err) != NSS_STATUS_SUCCESS)
return NSS_STATUS_UNAVAIL;
result = nis_list (tablename_val, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL);
status = niserr2nss (result->status);
if (status != NSS_STATUS_SUCCESS)
{
nis_freeresult (result);
result = NULL;
}
return status;
}
enum nss_status
_nss_nisplus_setgrent (int stayopen)
{
enum nss_status status;
__libc_lock_lock (lock);
status = internal_setgrent ();
__libc_lock_unlock (lock);
return status;
}
enum nss_status
_nss_nisplus_endgrent (void)
{
__libc_lock_lock (lock);
if (result)
nis_freeresult (result);
result = NULL;
__libc_lock_unlock (lock);
return NSS_STATUS_SUCCESS;
}
static enum nss_status
internal_nisplus_getgrent_r (struct group *gr, char *buffer, size_t buflen,
int *errnop)
{
int parse_res;
if (result == NULL)
{
enum nss_status status;
status = internal_setgrent ();
if (result == NULL || status != NSS_STATUS_SUCCESS)
return status;
}
/* Get the next entry until we found a correct one. */
do
{
if (next_entry >= result->objects.objects_len)
return NSS_STATUS_NOTFOUND;
parse_res = _nss_nisplus_parse_grent (result, next_entry, gr,
buffer, buflen, errnop);
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
++next_entry;
}
while (!parse_res);
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_nisplus_getgrent_r (struct group *result, char *buffer, size_t buflen,
int *errnop)
{
int status;
__libc_lock_lock (lock);
status = internal_nisplus_getgrent_r (result, buffer, buflen, errnop);
__libc_lock_unlock (lock);
return status;
}
enum nss_status
_nss_nisplus_getgrnam_r (const char *name, struct group *gr,
char *buffer, size_t buflen, int *errnop)
{
int parse_res;
if (tablename_val == NULL)
{
enum nss_status status = _nss_create_tablename (errnop);
if (status != NSS_STATUS_SUCCESS)
return status;
}
if (name == NULL)
{
*errnop = EINVAL;
return NSS_STATUS_NOTFOUND;
}
else
{
nis_result *result;
char buf[strlen (name) + 24 + tablename_len];
sprintf (buf, "[name=%s],%s", name, tablename_val);
result = nis_list (buf, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL);
if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
{
enum nss_status status = niserr2nss (result->status);
nis_freeresult (result);
return status;
}
parse_res = _nss_nisplus_parse_grent (result, 0, gr, buffer, buflen,
errnop);
nis_freeresult (result);
if (parse_res < 1)
{
if (parse_res == -1)
{
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
else
return NSS_STATUS_NOTFOUND;
}
return NSS_STATUS_SUCCESS;
}
}
enum nss_status
_nss_nisplus_getgrgid_r (const gid_t gid, struct group *gr,
char *buffer, size_t buflen, int *errnop)
{
if (tablename_val == NULL)
{
enum nss_status status = _nss_create_tablename (errnop);
if (status != NSS_STATUS_SUCCESS)
return status;
}
{
int parse_res;
nis_result *result;
char buf[36 + tablename_len];
sprintf (buf, "[gid=%d],%s", gid, tablename_val);
result = nis_list (buf, FOLLOW_PATH | FOLLOW_LINKS, NULL, NULL);
if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
{
enum nss_status status = niserr2nss (result->status);
nis_freeresult (result);
return status;
}
parse_res = _nss_nisplus_parse_grent (result, 0, gr, buffer, buflen,
errnop);
nis_freeresult (result);
if (parse_res < 1)
{
if (parse_res == -1)
{
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
else
return NSS_STATUS_NOTFOUND;
}
return NSS_STATUS_SUCCESS;
}
}
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