424 lines
10 KiB
C
424 lines
10 KiB
C
/* Copyright (C) 1997 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 <netdb.h>
|
|
#include <errno.h>
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <arpa/inet.h>
|
|
#include <bits/libc-lock.h>
|
|
#include <rpcsvc/nis.h>
|
|
|
|
#include "nss-nisplus.h"
|
|
|
|
__libc_lock_define_initialized (static, lock)
|
|
|
|
static nis_result *result = NULL;
|
|
static nis_name tablename_val = NULL;
|
|
static u_long tablename_len = 0;
|
|
|
|
#define NISENTRYVAL(idx,col,res) \
|
|
((res)->objects.objects_val[(idx)].EN_data.en_cols.en_cols_val[(col)].ec_value.ec_value_val)
|
|
|
|
#define NISENTRYLEN(idx,col,res) \
|
|
((res)->objects.objects_val[(idx)].EN_data.en_cols.en_cols_val[(col)].ec_value.ec_value_len)
|
|
|
|
|
|
static int
|
|
_nss_nisplus_parse_netent (nis_result *result, struct netent *network,
|
|
char *buffer, size_t buflen, int *errnop)
|
|
{
|
|
char *first_unused = buffer;
|
|
size_t room_left = buflen;
|
|
unsigned int i;
|
|
char *p, *line;
|
|
|
|
if (result == NULL)
|
|
return 0;
|
|
|
|
if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS)
|
|
|| __type_of (result->objects.objects_val) != NIS_ENTRY_OBJ
|
|
|| strcmp (result->objects.objects_val[0].EN_data.en_type,
|
|
"networks_tbl") != 0
|
|
|| result->objects.objects_val[0].EN_data.en_cols.en_cols_len < 3)
|
|
return 0;
|
|
|
|
if (NISENTRYLEN(0, 0, result) >= room_left)
|
|
{
|
|
/* The line is too long for our buffer. */
|
|
no_more_room:
|
|
*errnop = ERANGE;
|
|
return -1;
|
|
}
|
|
|
|
strncpy (first_unused, NISENTRYVAL(0, 0, result),
|
|
NISENTRYLEN (0, 0, result));
|
|
first_unused[NISENTRYLEN (0, 0, result)] = '\0';
|
|
network->n_name = first_unused;
|
|
room_left -= (strlen (first_unused) +1);
|
|
first_unused += strlen (first_unused) +1;
|
|
network->n_addrtype = 0;
|
|
network->n_net = inet_network (NISENTRYVAL (0, 2, result));
|
|
p = first_unused;
|
|
|
|
line = p;
|
|
for (i = 0; i < result->objects.objects_len; i++)
|
|
{
|
|
if (strcmp (NISENTRYVAL (i, 1, result), network->n_name) != 0)
|
|
{
|
|
if (NISENTRYLEN (i, 1, result) + 2 > room_left)
|
|
goto no_more_room;
|
|
|
|
*p++ = ' ';
|
|
p = __stpncpy (p, NISENTRYVAL (i, 1, result),
|
|
NISENTRYLEN (i, 1, result));
|
|
*p = '\0';
|
|
room_left -= (NISENTRYLEN (i, 1, result) + 1);
|
|
}
|
|
}
|
|
++p;
|
|
first_unused = p;
|
|
|
|
/* Adjust the pointer so it is aligned for
|
|
storing pointers. */
|
|
first_unused += __alignof__ (char *) - 1;
|
|
first_unused -= ((first_unused - (char *) 0) % __alignof__ (char *));
|
|
network->n_aliases = (char **) first_unused;
|
|
if (room_left < 2 * sizeof (char *))
|
|
goto no_more_room;
|
|
room_left -= (2 * sizeof (char *));
|
|
network->n_aliases[0] = NULL;
|
|
|
|
i = 0;
|
|
while (*line != '\0')
|
|
{
|
|
/* Skip leading blanks. */
|
|
while (isspace (*line))
|
|
line++;
|
|
|
|
if (*line == '\0')
|
|
break;
|
|
|
|
if (room_left < sizeof (char *))
|
|
goto no_more_room;
|
|
|
|
room_left -= sizeof (char *);
|
|
network->n_aliases[i] = line;
|
|
|
|
while (*line != '\0' && *line != ' ')
|
|
++line;
|
|
|
|
if (line != network->n_aliases[i])
|
|
{
|
|
if (*line != '\0')
|
|
{
|
|
*line = '\0';
|
|
++line;
|
|
}
|
|
++i;
|
|
}
|
|
else
|
|
network->n_aliases[i] = NULL;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
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, "networks.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;
|
|
}
|
|
|
|
enum nss_status
|
|
_nss_nisplus_setnetent (void)
|
|
{
|
|
enum nss_status status = NSS_STATUS_SUCCESS;
|
|
int err;
|
|
|
|
__libc_lock_lock (lock);
|
|
|
|
if (result)
|
|
nis_freeresult (result);
|
|
result = NULL;
|
|
|
|
if (tablename_val == NULL)
|
|
status = _nss_create_tablename (&err);
|
|
|
|
__libc_lock_unlock (lock);
|
|
|
|
return status;
|
|
}
|
|
|
|
enum nss_status
|
|
_nss_nisplus_endnetent (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_getnetent_r (struct netent *network, char *buffer,
|
|
size_t buflen, int *errnop, int *herrnop)
|
|
{
|
|
int parse_res;
|
|
|
|
/* Get the next entry until we found a correct one. */
|
|
do
|
|
{
|
|
nis_result *saved_res;
|
|
|
|
if (result == NULL)
|
|
{
|
|
saved_res = NULL;
|
|
|
|
if (tablename_val == NULL)
|
|
{
|
|
enum nss_status status = _nss_create_tablename (errnop);
|
|
|
|
if (status != NSS_STATUS_SUCCESS)
|
|
return status;
|
|
}
|
|
|
|
result = nis_first_entry (tablename_val);
|
|
if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
|
|
{
|
|
int retval;
|
|
|
|
retval = niserr2nss (result->status);
|
|
nis_freeresult (result);
|
|
result = NULL;
|
|
if (retval == NSS_STATUS_TRYAGAIN)
|
|
{
|
|
*herrnop = NETDB_INTERNAL;
|
|
*errnop = errno;
|
|
return retval;
|
|
}
|
|
else
|
|
return retval;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
nis_result *res;
|
|
|
|
res = nis_next_entry (tablename_val, &result->cookie);
|
|
saved_res = result;
|
|
result = res;
|
|
if (niserr2nss (result->status) != NSS_STATUS_SUCCESS)
|
|
{
|
|
int retval;
|
|
|
|
retval = niserr2nss (result->status);
|
|
nis_freeresult (result);
|
|
result = saved_res;
|
|
if (retval == NSS_STATUS_TRYAGAIN)
|
|
{
|
|
*herrnop = NETDB_INTERNAL;
|
|
*errnop = errno;
|
|
}
|
|
return retval;
|
|
}
|
|
}
|
|
|
|
parse_res = _nss_nisplus_parse_netent (result, network, buffer,
|
|
buflen, errnop);
|
|
if (parse_res == -1)
|
|
{
|
|
*herrnop = NETDB_INTERNAL;
|
|
return NSS_STATUS_TRYAGAIN;
|
|
}
|
|
|
|
} while (!parse_res);
|
|
|
|
return NSS_STATUS_SUCCESS;
|
|
}
|
|
|
|
enum nss_status
|
|
_nss_nisplus_getnetent_r (struct netent *result, char *buffer,
|
|
size_t buflen, int *errnop, int *herrnop)
|
|
{
|
|
int status;
|
|
|
|
__libc_lock_lock (lock);
|
|
|
|
status = internal_nisplus_getnetent_r (result, buffer, buflen, errnop,
|
|
herrnop);
|
|
|
|
__libc_lock_unlock (lock);
|
|
|
|
return status;
|
|
}
|
|
|
|
enum nss_status
|
|
_nss_nisplus_getnetbyname_r (const char *name, struct netent *network,
|
|
char *buffer, size_t buflen, int *errnop,
|
|
int *herrnop)
|
|
{
|
|
int parse_res, retval;
|
|
|
|
if (tablename_val == NULL)
|
|
{
|
|
enum nss_status status = _nss_create_tablename (errnop);
|
|
|
|
if (status != NSS_STATUS_SUCCESS)
|
|
return status;
|
|
}
|
|
|
|
if (name == NULL)
|
|
{
|
|
*errnop = EINVAL;
|
|
*herrnop = NETDB_INTERNAL;
|
|
return NSS_STATUS_UNAVAIL;
|
|
}
|
|
else
|
|
{
|
|
nis_result *result;
|
|
char buf[strlen (name) + 255 + tablename_len];
|
|
|
|
/* Search at first in the alias list, and use the correct name
|
|
for the next search */
|
|
sprintf (buf, "[name=%s],%s", name, tablename_val);
|
|
result = nis_list (buf, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL);
|
|
|
|
/* If we do not find it, try it as original name. But if the
|
|
database is correct, we should find it in the first case, too */
|
|
if ((result->status != NIS_SUCCESS && result->status != NIS_S_SUCCESS)
|
|
|| __type_of (result->objects.objects_val) != NIS_ENTRY_OBJ
|
|
|| strcmp (result->objects.objects_val[0].EN_data.en_type,
|
|
"networks_tbl") != 0
|
|
|| result->objects.objects_val[0].EN_data.en_cols.en_cols_len < 3)
|
|
sprintf (buf, "[cname=%s],%s", name, tablename_val);
|
|
else
|
|
sprintf (buf, "[cname=%s],%s", NISENTRYVAL (0, 0, result),
|
|
tablename_val);
|
|
|
|
nis_freeresult (result);
|
|
result = nis_list (buf, FOLLOW_LINKS | FOLLOW_PATH, NULL, NULL);
|
|
|
|
retval = niserr2nss (result->status);
|
|
if (retval != NSS_STATUS_SUCCESS)
|
|
{
|
|
if (retval == NSS_STATUS_TRYAGAIN)
|
|
{
|
|
*errnop = errno;
|
|
*herrnop = NETDB_INTERNAL;
|
|
}
|
|
nis_freeresult (result);
|
|
return retval;
|
|
}
|
|
|
|
parse_res = _nss_nisplus_parse_netent (result, network, buffer, buflen,
|
|
errnop);
|
|
|
|
nis_freeresult (result);
|
|
|
|
if (parse_res > 0)
|
|
return NSS_STATUS_SUCCESS;
|
|
|
|
*herrnop = NETDB_INTERNAL;
|
|
if (parse_res == -1)
|
|
{
|
|
*errnop = ERANGE;
|
|
return NSS_STATUS_TRYAGAIN;
|
|
}
|
|
else
|
|
return NSS_STATUS_NOTFOUND;
|
|
}
|
|
}
|
|
|
|
/* XXX type is ignored, SUN's NIS+ table doesn't support it */
|
|
enum nss_status
|
|
_nss_nisplus_getnetbyaddr_r (const unsigned long addr, const int type,
|
|
struct netent *network, char *buffer,
|
|
size_t buflen, int *errnop, int *herrnop)
|
|
{
|
|
if (tablename_val == NULL)
|
|
{
|
|
enum nss_status status = _nss_create_tablename (errnop);
|
|
|
|
if (status != NSS_STATUS_SUCCESS)
|
|
return status;
|
|
}
|
|
|
|
{
|
|
int parse_res, retval;
|
|
nis_result *result;
|
|
char buf[1024 + tablename_len];
|
|
struct in_addr in;
|
|
|
|
in = inet_makeaddr (addr, 0);
|
|
sprintf (buf, "[addr=%s],%s", inet_ntoa (in), tablename_val);
|
|
|
|
result = nis_list (buf, EXPAND_NAME, NULL, NULL);
|
|
|
|
retval = niserr2nss (result->status);
|
|
if (retval != NSS_STATUS_SUCCESS)
|
|
{
|
|
if (retval == NSS_STATUS_TRYAGAIN)
|
|
{
|
|
*errnop = errno;
|
|
*herrnop = NETDB_INTERNAL;
|
|
}
|
|
nis_freeresult (result);
|
|
return retval;
|
|
}
|
|
|
|
parse_res = _nss_nisplus_parse_netent (result, network, buffer, buflen,
|
|
errnop);
|
|
|
|
nis_freeresult (result);
|
|
|
|
if (parse_res > 0)
|
|
return NSS_STATUS_SUCCESS;
|
|
|
|
*herrnop = NETDB_INTERNAL;
|
|
if (parse_res == -1)
|
|
{
|
|
*errnop = ERANGE;
|
|
return NSS_STATUS_TRYAGAIN;
|
|
}
|
|
else
|
|
return NSS_STATUS_NOTFOUND;
|
|
}
|
|
}
|