glibc/nis/nss_nis/nis-network.c
Ulrich Drepper 34816665b6 Update.
* nss/getXXbyYY_r.c (REENTRANT_NAME): Return ENOENT if status is
	neither SUCCESS nor TRYAGAIN [PR libc/4259].
	* nss/nss_files/files-XXX.c (internal_getent): Don't set *errnop
	to ENOENT if no entry is found.
	* nis/nss_compat/compat-grp.c: Don't set errno in case of lookup
	failure.
	* nis/nss_compat/compat-initgroups.c: Likewise.
	* nis/nss_compat/compat-pwd.c: Likewise.
	* nis/nss_compat/compat-spwd.c: Likewise.
	* nis/nss_nis/nis-alias.c: Likewise.
	* nis/nss_nis/nis-ethers.c: Likewise.
	* nis/nss_nis/nis-grp.c: Likewise.
	* nis/nss_nis/nis-hosts.c: Likewise.
	* nis/nss_nis/nis-initgroups.c: Likewise.
	* nis/nss_nis/nis-netgrp.c: Likewise.
	* nis/nss_nis/nis-network.c: Likewise.
	* nis/nss_nis/nis-proto.c: Likewise.
	* nis/nss_nis/nis-publickey.c: Likewise.
	* nis/nss_nis/nis-pwd.c: Likewise.
	* nis/nss_nis/nis-rpc.c: Likewise.
	* nis/nss_nis/nis-service.c: Likewise.
	* nis/nss_nis/nis-spwd.c: Likewise.
	* resolv/nss_dns/dns-host.c: Likewise.
	* resolv/nss_dns/dns-network.c: Likewise.
	* nis/nss_nisplus/nisplus-alias.c: Save errno around NIS calls.
	* nis/nss_nisplus/nisplus-ethers.c: Likewise.
	* nis/nss_nisplus/nisplus-grp.c: Likewise.
	* nis/nss_nisplus/nisplus-hosts.c: Likewise.
	* nis/nss_nisplus/nisplus-network.c: Likewise.
	* nis/nss_nisplus/nisplus-proto.c: Likewise.
	* nis/nss_nisplus/nisplus-pwd.c: Likewise.
	* nis/nss_nisplus/nisplus-rpc.c: Likewise.
	* nis/nss_nisplus/nisplus-service.c: Likewise.
	* nis/nss_nisplus/nisplus-spwd.c: Likewise.
	* hesiod/nss_hesiod/hesiod-pwd.c (lookup): Preserve errno value.
	* hesiod/nss_hesiod/hesiod-proto.c (lookup): Likewise.
	* hesiod/nss_hesiod/hesiod-grp.c (lookup): Likewise.
	* hesiod/nss_hesiod/hesiod-service.c (lookup): Likewise.
2002-08-26 07:06:57 +00:00

323 lines
7.0 KiB
C

/* Copyright (C) 1996-2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1996.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <nss.h>
#include <netdb.h>
#include <ctype.h>
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <bits/libc-lock.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include "nss-nis.h"
/* Get the declaration of the parser function. */
#define ENTNAME netent
#define EXTERN_PARSER
#include <nss/nss_files/files-parse.c>
__libc_lock_define_initialized (static, lock)
static bool_t new_start = 1;
static char *oldkey;
static int oldkeylen;
enum nss_status
_nss_nis_setnetent (int stayopen)
{
__libc_lock_lock (lock);
new_start = 1;
if (oldkey != NULL)
{
free (oldkey);
oldkey = NULL;
oldkeylen = 0;
}
__libc_lock_unlock (lock);
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_nis_endnetent (void)
{
__libc_lock_lock (lock);
new_start = 1;
if (oldkey != NULL)
{
free (oldkey);
oldkey = NULL;
oldkeylen = 0;
}
__libc_lock_unlock (lock);
return NSS_STATUS_SUCCESS;
}
static enum nss_status
internal_nis_getnetent_r (struct netent *net, char *buffer, size_t buflen,
int *errnop, int *herrnop)
{
struct parser_data *data = (void *) buffer;
char *domain, *result, *outkey;
int len, keylen, parse_res;
if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
/* Get the next entry until we found a correct one. */
do
{
enum nss_status retval;
char *p;
if (new_start)
retval = yperr2nss (yp_first (domain, "networks.byname",
&outkey, &keylen, &result, &len));
else
retval = yperr2nss ( yp_next (domain, "networks.byname",
oldkey, oldkeylen,
&outkey, &keylen, &result, &len));
if (retval != NSS_STATUS_SUCCESS)
{
if (retval == NSS_STATUS_TRYAGAIN)
{
*herrnop = NETDB_INTERNAL;
*errnop = errno;
}
return retval;
}
if ((size_t) (len + 1) > buflen)
{
free (result);
*errnop = ERANGE;
*herrnop = NETDB_INTERNAL;
return NSS_STATUS_TRYAGAIN;
}
p = strncpy (buffer, result, len);
buffer[len] = '\0';
while (isspace (*p))
++p;
free (result);
parse_res = _nss_files_parse_netent (p, net, data, buflen, errnop);
if (parse_res == -1)
{
free (outkey);
*herrnop = NETDB_INTERNAL;
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
free (oldkey);
oldkey = outkey;
oldkeylen = keylen;
new_start = 0;
}
while (!parse_res);
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_nis_getnetent_r (struct netent *net, char *buffer, size_t buflen,
int *errnop, int *herrnop)
{
enum nss_status status;
__libc_lock_lock (lock);
status = internal_nis_getnetent_r (net, buffer, buflen, errnop, herrnop);
__libc_lock_unlock (lock);
return status;
}
enum nss_status
_nss_nis_getnetbyname_r (const char *name, struct netent *net, char *buffer,
size_t buflen, int *errnop, int *herrnop)
{
enum nss_status retval;
struct parser_data *data = (void *) buffer;
char *domain, *result, *p;
int len, parse_res;
if (name == NULL)
{
*errnop = EINVAL;
*herrnop = NETDB_INTERNAL;
return NSS_STATUS_UNAVAIL;
}
if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
if (buflen < sizeof *data + 1)
{
*herrnop = NETDB_INTERNAL;
*errnop = ERANGE;
return NSS_STATUS_TRYAGAIN;
}
else
{
/* Convert name to lowercase. */
size_t namlen = strlen (name);
char name2[namlen + 1];
int i;
for (i = 0; i < namlen; ++i)
name2[i] = _tolower (name[i]);
name2[i] = '\0';
retval = yperr2nss (yp_match (domain, "networks.byname", name2,
namlen, &result, &len));
}
if (retval != NSS_STATUS_SUCCESS)
{
if (retval == NSS_STATUS_TRYAGAIN)
{
*errnop = errno;
*herrnop = NETDB_INTERNAL;
}
return retval;
}
if ((size_t) (len + 1) > buflen)
{
free (result);
*errnop = ERANGE;
*herrnop = NETDB_INTERNAL;
return NSS_STATUS_TRYAGAIN;
}
p = strncpy (buffer, result, len);
buffer[len] = '\0';
while (isspace (*p))
++p;
free (result);
parse_res = _nss_files_parse_netent (p, net, data, buflen, errnop);
if (parse_res < 1)
{
*herrnop = NETDB_INTERNAL;
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
else
return NSS_STATUS_NOTFOUND;
}
else
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_nis_getnetbyaddr_r (uint32_t addr, int type, struct netent *net,
char *buffer, size_t buflen, int *errnop,
int *herrnop)
{
struct parser_data *data = (void *) buffer;
char *domain;
char *result;
int len;
char buf[256];
int blen;
struct in_addr in;
char *p;
if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
in = inet_makeaddr (addr, 0);
strcpy (buf, inet_ntoa (in));
blen = strlen (buf);
while (1)
{
enum nss_status retval;
int parse_res;
retval = yperr2nss (yp_match (domain, "networks.byaddr", buf,
strlen (buf), &result, &len));
if (retval != NSS_STATUS_SUCCESS)
{
if (retval == NSS_STATUS_NOTFOUND)
{
if (buf[blen - 2] == '.' && buf[blen - 1] == '0')
{
/* Try again, but with trailing dot(s)
removed (one by one) */
buf[blen - 2] = '\0';
blen -= 2;
continue;
}
else
return NSS_STATUS_NOTFOUND;
}
else
{
if (retval == NSS_STATUS_TRYAGAIN)
*errnop = errno;
return retval;
}
}
if ((size_t) (len + 1) > buflen)
{
free (result);
*errnop = ERANGE;
*herrnop = NETDB_INTERNAL;
return NSS_STATUS_TRYAGAIN;
}
p = strncpy (buffer, result, len);
buffer[len] = '\0';
while (isspace (*p))
++p;
free (result);
parse_res = _nss_files_parse_netent (p, net, data, buflen, errnop);
if (parse_res < 1)
{
*herrnop = NETDB_INTERNAL;
if (parse_res == -1)
return NSS_STATUS_TRYAGAIN;
else
return NSS_STATUS_NOTFOUND;
}
else
return NSS_STATUS_SUCCESS;
}
}