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/* Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Mark Kettenis <kettenis@phys.uva.nl>, 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 <bits/libc-lock.h>
#include <errno.h>
#include <hesiod.h>
#include <nss.h>
#include <grp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* Get the declaration of the parser function. */
#define ENTNAME grent
#define STRUCTURE group
#define EXTERN_PARSER
#include <nss/nss_files/files-parse.c>
/* Locks the static variables in this file. */
__libc_lock_define_initialized (static, lock);
static void *context = NULL;
static enum nss_status
internal_setgrent (void)
{
if (!context)
{
if (hesiod_init (&context) == -1)
return NSS_STATUS_UNAVAIL;
}
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_hesiod_setgrent (void)
{
enum nss_status status;
__libc_lock_lock (lock);
status = internal_setgrent ();
__libc_lock_unlock (lock);
return status;
}
enum nss_status
_nss_hesiod_endgrent (void)
{
__libc_lock_lock (lock);
if (context)
{
hesiod_end (context);
context = NULL;
}
__libc_lock_unlock (lock);
return NSS_STATUS_SUCCESS;
}
static enum nss_status
lookup (const char *name, const char *type, struct group *grp,
char *buffer, size_t buflen, int *errnop)
{
enum nss_status status;
struct parser_data *data = (void *) buffer;
size_t linebuflen;
char **list;
int parse_res;
size_t len;
status = internal_setgrent ();
if (status != NSS_STATUS_SUCCESS)
return status;
list = hesiod_resolve (context, name, type);
if (list == NULL)
return errno == ENOENT ? NSS_STATUS_NOTFOUND : NSS_STATUS_UNAVAIL;
linebuflen = buffer + buflen - data->linebuffer;
len = strlen (*list) + 1;
if (linebuflen < len)
{
hesiod_free_list (context, list);
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
memcpy (data->linebuffer, *list, len);
hesiod_free_list (context, list);
parse_res = _nss_files_parse_grent (buffer, grp, data, buflen, errnop);
if (parse_res < 1)
return parse_res == -1 ? NSS_STATUS_TRYAGAIN : NSS_STATUS_NOTFOUND;
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_hesiod_getgrnam_r (const char *name, struct group *grp,
char *buffer, size_t buflen, int *errnop)
{
enum nss_status status;
__libc_lock_lock (lock);
status = lookup (name, "group", grp, buffer, buflen, errnop);
__libc_lock_unlock (lock);
return status;
}
enum nss_status
_nss_hesiod_getgrgid_r (gid_t gid, struct group *grp,
char *buffer, size_t buflen, int *errnop)
{
enum nss_status status = NSS_STATUS_UNAVAIL;
char gidstr[21]; /* We will probably never have a gid_t with more
than 64 bits. */
snprintf (gidstr, sizeof gidstr, "%d", gid);
__libc_lock_lock (lock);
status = lookup (gidstr, "gid", grp, buffer, buflen, errnop);
__libc_lock_unlock (lock);
return status;
}
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