glibc/nis/nss_nis/nis-hosts.c
Ulrich Drepper 6259ec0d78 update from main arcive 961210
Wed Dec 11 01:04:30 1996  Ulrich Drepper  <drepper@cygnus.com>

	Add NIS NSS implementation.
	* shlib-versions: Add versions for NIS libraries.
	* sysdeps/unix/inet/Subdirs: Add nis.
	* nis/Banner: New file.
	* nis/Makefile: New file.
	* nis/nss-nis.h: New file.
	* nis/yp_xdr.h: New file.
	* nis/ypclnt.h: New file.
	* nis/ypupdate_xdr.c: New file.
	* nis/nss_compat/compat-grp.c: New file.
	* nis/nss_compat/compat-pwd.c: New file.
	* nis/nss_compat/compat-spwd.c: New file.
	* nis/nss_nis/nis-alias.c: New file.
	* nis/nss_nis/nis-ethers.c: New file.
	* nis/nss_nis/nis-grp.c: New file.
	* nis/nss_nis/nis-hosts.c: New file.
	* nis/nss_nis/nis-netgrp.c: New file.
	* nis/nss_nis/nis-network.c: New file.
	* nis/nss_nis/nis-proto.c: New file.
	* nis/nss_nis/nis-publickey.c: New file.
	* nis/nss_nis/nis-pwd.c: New file.
	* nis/nss_nis/nis-rpc.c: New file.
	* nis/nss_nis/nis-service.c: New file.
	* nis/nss_nis/nis-spwd.c: New file.
	* nis/rpcsvc/yp.h: New file.
	* nis/rpcsvc/yp.x: New file.
	* nis/rpcsvc/yp_prot.h: New file.
	* nis/rpcsvc/ypclnt.h: New file.
	* nis/rpcsvc/ypupd.h: New file.

	* libio/_G_config.h: Define _G_HAVE_SYS_WAIT and _G_HAVE_PRINTF_FP.

	* locale/C-numeric.c: Update copyright.

	* locale/Makefile: Add rules to build libBrokenLocale.
	* locale/broken_cur_max.c: New file.
	* locale/mb_cur_max.c: Update copyright.
	(__ctype_get_mb_cur_max): Make function weak.

	* new-malloc/malloc.c: Correct copyright.
	* new-malloc/thread-m.h: Correct key handling.

	* shadow/lckpwdf.c: Update copyright.
	(PWD_LOCKFILE): Change to /etc/.pwd.lock.

	* stdlib/strtod.c: Add another assertion.
	* stdlib/tst-strtod.c: Add another test case.

	* sysdeps/generic/paths.h: Add _PATH_PRESERVE.  Needed by nvi.
	* sysdeps/unix/sysv/linux/paths.h: Likewise.

	* sysdeps/gnu/utmpbits.h: Rename ut_addr field to ut_addr_v6.
	ut_addr names a single element in ut_addr_v6.

	* sysdeps/mach/hurd/xmknod.c: Remove alias from __mknod to mknod.
	Patch by Thomas Bushnell, n/BSG.

Tue Dec 10 11:35:28 1996  Richard Henderson  <rth@tamu.edu>

	* sysdeps/alpha/strncmp.S: Fix aligned short truncated compare
	corner condition.

	* sysdeps/alpha/memchr.S: Don't read ahead, even if the load
	did fit nicely into that delay slot (patch from David Mosberger-Tang).

Mon Dec  9 23:53:43 1996  Thomas Bushnell, n/BSG  <thomas@gnu.ai.mit.edu>

	* sysdeps/mach/hurd/ttyname_r.c (__ttyname_r): Renamed from
	`ttyname_r'.
	(ttyname_r): New alias.

	* stdio-common/printf_fp.c (__guess_grouping): Fix off by one
1996-12-11 01:40:39 +00:00

390 lines
8.9 KiB
C

/* Copyright (C) 1996 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 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 <ctype.h>
#include <netdb.h>
#include <string.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <resolv.h>
#include <libc-lock.h>
#include <rpcsvc/yp.h>
#include <rpcsvc/ypclnt.h>
#include "nss-nis.h"
/* Get implementation for some internal functions. */
#include "../../resolv/mapv4v6addr.h"
#include "../../resolv/mapv4v6hostent.h"
#define ENTNAME hostent
#define DATABASE "hosts"
#define NEED_H_ERRNO
#define ENTDATA hostent_data
struct hostent_data
{
unsigned char host_addr[16]; /* IPv4 or IPv6 address. */
char *h_addr_ptrs[2]; /* Points to that and null terminator. */
};
#define TRAILING_LIST_MEMBER h_aliases
#define TRAILING_LIST_SEPARATOR_P isspace
#include "../../nss/nss_files/files-parse.c"
LINE_PARSER
("#",
{
char *addr;
STRING_FIELD (addr, isspace, 1);
/* Parse address. */
if ((_res.options & RES_USE_INET6)
&& inet_pton (AF_INET6, addr, entdata->host_addr) > 0)
{
result->h_addrtype = AF_INET6;
result->h_length = IN6ADDRSZ;
}
else
if (inet_pton (AF_INET, addr, entdata->host_addr) > 0)
{
if (_res.options & RES_USE_INET6)
{
map_v4v6_address ((char *) entdata->host_addr,
(char *) entdata->host_addr);
result->h_addrtype = AF_INET6;
result->h_length = IN6ADDRSZ;
}
else
{
result->h_addrtype = AF_INET;
result->h_length = INADDRSZ;
}
}
else
/* Illegal address: ignore line. */
return 0;
/* Store a pointer to the address in the expected form. */
entdata->h_addr_ptrs[0] = entdata->host_addr;
entdata->h_addr_ptrs[1] = NULL;
result->h_addr_list = entdata->h_addr_ptrs;
/* If we need the host entry in IPv6 form change it now. */
if (_res.options & RES_USE_INET6)
{
char *bufptr = data->linebuffer;
size_t buflen = (char *) data + datalen - bufptr;
map_v4v6_hostent (result, &bufptr, &buflen);
}
STRING_FIELD (result->h_name, isspace, 1);
}
)
__libc_lock_define_initialized (static, lock)
static bool_t new_start = 1;
static char *oldkey = NULL;
static int oldkeylen = 0;
enum nss_status
_nss_nis_sethostent (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;
}
enum nss_status
_nss_nis_endhostent (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_gethostent_r (struct hostent *host, char *buffer,
size_t buflen, int *h_errnop)
{
char *domain;
char *result;
int len, parse_res;
char *outkey;
int keylen;
struct parser_data *data = (void *) buffer;
size_t linebuflen = buffer + buflen - data->linebuffer;
if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
if (buflen < sizeof *data + 1)
{
__set_errno (ERANGE);
*h_errnop = NETDB_INTERNAL;
return NSS_STATUS_TRYAGAIN;
}
/* 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, "hosts.byname",
&outkey, &keylen, &result, &len));
else
retval = yperr2nss ( yp_next (domain, "hosts.byname",
oldkey, oldkeylen,
&outkey, &keylen, &result, &len));
if (retval != NSS_STATUS_SUCCESS)
{
switch (retval)
{
case NSS_STATUS_TRYAGAIN:
__set_errno (EAGAIN);
*h_errnop = TRY_AGAIN;
break;
case NSS_STATUS_NOTFOUND:
*h_errnop = HOST_NOT_FOUND;
break;
default:
*h_errnop = NO_RECOVERY;
break;
}
return retval;
}
if (len + 1 > linebuflen)
{
free (result);
*h_errnop = NETDB_INTERNAL;
__set_errno (ERANGE);
return NSS_STATUS_TRYAGAIN;
}
p = strncpy (data->linebuffer, result, len);
data->linebuffer[len] = '\0';
while (isspace (*p))
++p;
free (result);
parse_res = parse_line (p, host, data, buflen);
if (!parse_res && errno == ERANGE)
{
*h_errnop = NETDB_INTERNAL;;
return NSS_STATUS_TRYAGAIN;
}
free (oldkey);
oldkey = outkey;
oldkeylen = keylen;
new_start = 0;
}
while (!parse_res);
*h_errnop = NETDB_SUCCESS;
return NSS_STATUS_SUCCESS;
}
int
_nss_nis_gethostent_r (struct hostent *host, char *buffer, size_t buflen,
int *h_errnop)
{
int status;
__libc_lock_lock (lock);
status = internal_nis_gethostent_r (host, buffer, buflen, h_errnop);
__libc_lock_unlock (lock);
return status;
}
enum nss_status
_nss_nis_gethostbyname_r (const char *name, struct hostent *host,
char *buffer, size_t buflen, int *h_errnop)
{
enum nss_status retval;
char *domain, *result, *p;
int len, parse_res;
struct parser_data *data = (void *) buffer;
size_t linebuflen = buffer + buflen - data->linebuffer;
if (name == NULL)
{
__set_errno (EINVAL);
return NSS_STATUS_UNAVAIL;
}
if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
if (buflen < sizeof *data + 1)
{
*h_errnop = NETDB_INTERNAL;
__set_errno (ERANGE);
return NSS_STATUS_TRYAGAIN;
}
retval = yperr2nss (yp_match (domain, "hosts.byname", name,
strlen (name), &result, &len));
if (retval != NSS_STATUS_SUCCESS)
{
if (retval == NSS_STATUS_TRYAGAIN)
{
*h_errnop = TRY_AGAIN;
__set_errno (EAGAIN);
}
if (retval == NSS_STATUS_NOTFOUND)
*h_errnop = HOST_NOT_FOUND;
return retval;
}
if (len + 1 > linebuflen)
{
free (result);
*h_errnop = NETDB_INTERNAL;
__set_errno (ERANGE);
return NSS_STATUS_TRYAGAIN;
}
p = strncpy (data->linebuffer, result, len);
data->linebuffer[len] = '\0';
while (isspace (*p))
++p;
free (result);
parse_res = parse_line (p, host, data, buflen);
if (!parse_res)
{
if (errno == ERANGE)
{
*h_errnop = NETDB_INTERNAL;
return NSS_STATUS_TRYAGAIN;
}
else
{
*h_errnop = HOST_NOT_FOUND;
return NSS_STATUS_NOTFOUND;
}
}
*h_errnop = NETDB_SUCCESS;
return NSS_STATUS_SUCCESS;
}
enum nss_status
_nss_nis_gethostbyaddr_r (char *addr, int addrlen, int type,
struct hostent *host, char *buffer, size_t buflen,
int *h_errnop)
{
enum nss_status retval;
char *domain, *result, *p;
int len, parse_res;
char *buf;
struct parser_data *data = (void *) buffer;
size_t linebuflen = buffer + buflen - data->linebuffer;
if (yp_get_default_domain (&domain))
return NSS_STATUS_UNAVAIL;
if (buflen < sizeof *data + 1)
{
__set_errno (ERANGE);
*h_errnop = NETDB_INTERNAL;
return NSS_STATUS_TRYAGAIN;
}
buf = inet_ntoa (*(struct in_addr *) addr);
retval = yperr2nss (yp_match (domain, "hosts.byaddr", buf,
strlen (buf), &result, &len));
if (retval != NSS_STATUS_SUCCESS)
{
if (retval == NSS_STATUS_TRYAGAIN)
{
*h_errnop = TRY_AGAIN;
__set_errno (EAGAIN);
}
if (retval == NSS_STATUS_NOTFOUND)
*h_errnop = HOST_NOT_FOUND;
return retval;
}
if (len + 1 > linebuflen)
{
free (result);
__set_errno (ERANGE);
*h_errnop = NETDB_INTERNAL;
return NSS_STATUS_TRYAGAIN;
}
p = strncpy (data->linebuffer, result, len);
data->linebuffer[len] = '\0';
while (isspace (*p))
++p;
free (result);
parse_res = parse_line (p, host, data, buflen);
if (!parse_res)
{
if (errno == ERANGE)
{
*h_errnop = NETDB_INTERNAL;
return NSS_STATUS_TRYAGAIN;
}
else
{
*h_errnop = HOST_NOT_FOUND;
return NSS_STATUS_NOTFOUND;
}
}
*h_errnop = NETDB_SUCCESS;
return NSS_STATUS_SUCCESS;
}