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Diffstat (limited to 'nss/nss_dns/dns-host.c')
-rw-r--r--nss/nss_dns/dns-host.c664
1 files changed, 0 insertions, 664 deletions
diff --git a/nss/nss_dns/dns-host.c b/nss/nss_dns/dns-host.c
deleted file mode 100644
index e3963094a3..0000000000
--- a/nss/nss_dns/dns-host.c
+++ /dev/null
@@ -1,664 +0,0 @@
-/* Copyright (C) 1996 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Extended from original form by Ulrich Drepper <drepper@cygnus.com>, 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.  */
-
-/* Parts of this file are plain copies of the file `gethtnamadr.c' from
-   the bind package and it has the following copyright.  */
-
-/*
- * ++Copyright++ 1985, 1988, 1993
- * -
- * Copyright (c) 1985, 1988, 1993
- *    The Regents of the University of California.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- * 	This product includes software developed by the University of
- * 	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * -
- * Portions Copyright (c) 1993 by Digital Equipment Corporation.
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies, and that
- * the name of Digital Equipment Corporation not be used in advertising or
- * publicity pertaining to distribution of the document or software without
- * specific, written prior permission.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
- * CORPORATION BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
- * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
- * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- * -
- * --Copyright--
- */
-
-#include <ctype.h>
-#include <errno.h>
-#include <netdb.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <string.h>
-#include <sys/syslog.h>
-
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <arpa/nameser.h>
-#include <resolv.h>
-
-#include "nsswitch.h"
-
-/* Get implementation for some internal functions.  */
-#include "../resolv/mapv4v6addr.h"
-#include "../resolv/mapv4v6hostent.h"
-
-/* Maximum number of aliases we allow.  */
-#define MAX_NR_ALIASES	48
-#define MAX_NR_ADDRS	48
-
-#if PACKETSZ > 1024
-# define MAXPACKET	PACKETSZ
-#else
-# define MAXPACKET	1024
-#endif
-
-static const char AskedForGot[] = "\
-gethostby*.getanswer: asked for \"%s\", got \"%s\"";
-
-
-/* We need this time later.  */
-typedef union querybuf
-{
-  HEADER hdr;
-  u_char buf[MAXPACKET];
-} querybuf;
-
-
-static enum nss_status getanswer_r (const querybuf *answer, int anslen,
-				    const char *qname, int qtype,
-				    struct hostent *result,
-				    char *buffer, int buflen, int *h_errnop);
-
-enum nss_status
-_nss_dns_gethostbyname2_r (const char *name, int af, struct hostent *result,
-			   char *buffer, int buflen, int *h_errnop)
-{
-  struct host_data
-  {
-    char *aliases[MAX_NR_ALIASES];
-    unsigned char host_addr[16];	/* IPv4 or IPv6 */
-    char *h_addr_ptrs[MAX_NR_ADDRS + 1];
-    char linebuffer[0];
-  } *host_data = (struct host_data *) buffer;
-  int linebuflen = buflen - offsetof (struct host_data, linebuffer);
-  querybuf host_buffer;
-  int size, type, n;
-  const char *cp;
-
-  switch (af) {
-  case AF_INET:
-    size = INADDRSZ;
-    type = T_A;
-    break;
-  case AF_INET6:
-    size = IN6ADDRSZ;
-    type = T_AAAA;
-    break;
-  default:
-    *h_errnop = NETDB_INTERNAL;
-    __set_errno (EAFNOSUPPORT);
-    return NSS_STATUS_UNAVAIL;
-  }
-
-  result->h_addrtype = af;
-  result->h_length = size;
-
-  /*
-   * if there aren't any dots, it could be a user-level alias.
-   * this is also done in res_query() since we are not the only
-   * function that looks up host names.
-   */
-  if (strchr (name, '.') == NULL && (cp = __hostalias (name)) != NULL)
-    name = cp;
-
-  /*
-   * disallow names consisting only of digits/dots, unless
-   * they end in a dot.
-   */
-  if (isdigit (name[0]))
-    for (cp = name;; ++cp)
-      {
-	if (*cp == '\0')
-	  {
-	    char *bp;
-
-	    if (*--cp == '.')
-	      break;
-	    /*
-	     * All-numeric, no dot at the end.  Fake up a hostent
-	     * as if we'd actually done a lookup.
-	     */
-	    if (inet_pton (af, name, host_data->host_addr) <= 0)
-	      {
-		*h_errnop = HOST_NOT_FOUND;
-		return NSS_STATUS_NOTFOUND;
-	      }
-
-	    bp = __stpncpy (host_data->linebuffer, name, linebuflen);
-	    host_data->linebuffer[linebuflen - 1] = '\0';
-	    linebuflen -= bp - host_data->linebuffer;
-
-	    result->h_name = host_data->linebuffer;
-	    result->h_aliases = host_data->aliases;
-	    host_data->aliases[0] = NULL;
-	    host_data->h_addr_ptrs[0] = (char *) host_data->host_addr;
-	    host_data->h_addr_ptrs[1] = NULL;
-	    result->h_addr_list = host_data->h_addr_ptrs;
-
-	    if (_res.options & RES_USE_INET6)
-	      map_v4v6_hostent (result, &bp, &linebuflen);
-	    *h_errnop = NETDB_SUCCESS;
-	    return NSS_STATUS_SUCCESS;
-	  }
-	if (!isdigit (*cp) && *cp != '.')
-	  break;
-      }
-  if (isxdigit (name[0]) || name[0] == ':')
-    for (cp = name;; ++cp)
-      {
-	if (*cp == '\0')
-	  {
-	    char *bp;
-
-	    if (*--cp == '.')
-	      break;
-	    /*
-	     * All-IPv6-legal, no dot at the end.  Fake up a hostent
-	     * as if we'd actually done a lookup.
-	     */
-	    if (inet_pton (af, name, host_data->host_addr) <= 0)
-	      {
-		*h_errnop = HOST_NOT_FOUND;
-		return NSS_STATUS_NOTFOUND;
-	      }
-
-	    bp = __stpncpy (host_data->linebuffer, name, linebuflen);
-	    host_data->linebuffer[linebuflen - 1] = '\0';
-	    linebuflen -= bp - host_data->linebuffer;
-
-	    result->h_name = host_data->linebuffer;
-	    result->h_aliases = host_data->aliases;
-	    host_data->aliases[0] = NULL;
-	    host_data->h_addr_ptrs[0] = (char *) host_data->host_addr;
-	    host_data->h_addr_ptrs[1] = NULL;
-	    result->h_addr_list = host_data->h_addr_ptrs;
-	    *h_errnop = NETDB_SUCCESS;
-	    return NSS_STATUS_SUCCESS;
-	  }
-	if (!isxdigit (*cp) && *cp != ':' && *cp != '.')
-	  break;
-      }
-
-  n = res_search (name, C_IN, type, host_buffer.buf, sizeof (host_buffer));
-  if (n < 0)
-    return (errno == ECONNREFUSED
-	    || errno == EPFNOSUPPORT
-	    || errno == EAFNOSUPPORT) 
-      ? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND;
-
-  return getanswer_r (&host_buffer, n, name, type, result, buffer, buflen,
-		      h_errnop);
-}
-
-
-enum nss_status
-_nss_dns_gethostbyname_r (const char *name, struct hostent *result,
-			  char *buffer, int buflen, int *h_errnop)
-{
-  enum nss_status status = NSS_STATUS_NOTFOUND;
-
-  if (_res.options & RES_USE_INET6)
-    status = _nss_dns_gethostbyname2_r (name, AF_INET6, result, buffer,
-					buflen, h_errnop);
-  if (status == NSS_STATUS_NOTFOUND)
-    status = _nss_dns_gethostbyname2_r (name, AF_INET, result, buffer,
-					buflen, h_errnop);
-
-  return status;
-}
-
-
-enum nss_status
-_nss_dns_gethostbyaddr_r (const char *addr, int len, int af,
-			  struct hostent *result, char *buffer, int buflen,
-			  int *h_errnop)
-{
-  static const u_char mapped[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0xff,0xff };
-  static const u_char tunnelled[] = { 0,0, 0,0, 0,0, 0,0, 0,0, 0,0 };
-  const u_char *uaddr = (const u_char *)addr;
-  struct host_data
-  {
-    char *aliases[MAX_NR_ALIASES];
-    unsigned char host_addr[16];	/* IPv4 or IPv6 */
-    char *h_addr_ptrs[MAX_NR_ADDRS + 1];
-    char linebuffer[0];
-  } *host_data = (struct host_data *) buffer;
-  querybuf host_buffer;
-  char qbuf[MAXDNAME+1], *qp;
-  int size, n, status;
-
-  if (af == AF_INET6 && len == IN6ADDRSZ &&
-      (bcmp (uaddr, mapped, sizeof mapped) == 0
-       || bcmp (uaddr, tunnelled, sizeof tunnelled) == 0))
-    {
-      /* Unmap. */
-      addr += sizeof mapped;
-      uaddr += sizeof mapped;
-      af = AF_INET;
-      len = INADDRSZ;
-    }
-
-  switch (af)
-    {
-    case AF_INET:
-      size = INADDRSZ;
-      break;
-    case AF_INET6:
-      size = IN6ADDRSZ;
-      break;
-    default:
-      __set_errno (EAFNOSUPPORT);
-      *h_errnop = NETDB_INTERNAL;
-      return NSS_STATUS_UNAVAIL;
-    }
-  if (size != len)
-    {
-      __set_errno (EAFNOSUPPORT);
-      *h_errnop = NETDB_INTERNAL;
-      return NSS_STATUS_UNAVAIL;
-    }
-
-  switch (af)
-    {
-    case AF_INET:
-      sprintf (qbuf, "%u.%u.%u.%u.in-addr.arpa", (uaddr[3] & 0xff),
-	       (uaddr[2] & 0xff), (uaddr[1] & 0xff), (uaddr[0] & 0xff));
-      break;
-    case AF_INET6:
-      qp = qbuf;
-      for (n = IN6ADDRSZ - 1; n >= 0; n--)
-	qp += sprintf (qp, "%x.%x.", uaddr[n] & 0xf, (uaddr[n] >> 4) & 0xf);
-      strcpy(qp, "ip6.int");
-      break;
-    default:
-      /* Cannot happen.  */
-    }
-
-  n = res_query (qbuf, C_IN, T_PTR, (u_char *)host_buffer.buf,
-		 sizeof host_buffer);
-  if (n < 0)
-    return (errno == ECONNREFUSED
-	    || errno == EPFNOSUPPORT
-	    || errno == EAFNOSUPPORT) 
-      ? NSS_STATUS_UNAVAIL : NSS_STATUS_NOTFOUND;
-
-  status = getanswer_r (&host_buffer, n, qbuf, T_PTR, result, buffer, buflen,
-			h_errnop);
-  if (status != NSS_STATUS_SUCCESS)
-    return status;
-
-#ifdef SUNSECURITY
-  This is not implemented because it is not possible to use the current
-  source from bind in a multi-threaded program.
-#endif
-
-  result->h_addrtype = af;
-  result->h_length = len;
-  bcopy (addr, host_data->host_addr, len);
-  host_data->h_addr_ptrs[0] = (char *) host_data->host_addr;
-  host_data->h_addr_ptrs[1] = NULL;
-  if (af == AF_INET && (_res.options & RES_USE_INET6))
-    {
-      map_v4v6_address ((char *) host_data->host_addr,
-			(char *) host_data->host_addr);
-      result->h_addrtype = AF_INET6;
-      result->h_length = IN6ADDRSZ;
-    }
-  *h_errnop = NETDB_SUCCESS;
-  return NSS_STATUS_SUCCESS;
-}
-
-
-static enum nss_status
-getanswer_r (const querybuf *answer, int anslen, const char *qname, int qtype,
-	     struct hostent *result, char *buffer, int buflen, int *h_errnop)
-{
-  struct host_data
-  {
-    char *aliases[MAX_NR_ALIASES];
-    unsigned char host_addr[16];	/* IPv4 or IPv6 */
-    char *h_addr_ptrs[MAX_NR_ADDRS + 1];
-    char linebuffer[0];
-  } *host_data = (struct host_data *) buffer;
-  int linebuflen = buflen - offsetof (struct host_data, linebuffer);
-  register const HEADER *hp;
-  const u_char *end_of_message, *cp;
-  int n, ancount, qdcount;
-  int haveanswer, had_error;
-  char *bp, **ap, **hap;
-  char tbuf[MAXDNAME];
-  const char *tname;
-  int (*name_ok) __P ((const char *));
-
-  tname = qname;
-  result->h_name = NULL;
-  end_of_message = answer->buf + anslen;
-  switch (qtype)
-    {
-    case T_A:
-    case T_AAAA:
-      name_ok = res_hnok;
-      break;
-    case T_PTR:
-      name_ok = res_dnok;
-      break;
-    default:
-      return NSS_STATUS_UNAVAIL;  /* XXX should be abort(); */
-    }
-
-  /*
-   * find first satisfactory answer
-   */
-  hp = &answer->hdr;
-  bp = host_data->linebuffer;
-  ancount = ntohs (hp->ancount);
-  qdcount = ntohs (hp->qdcount);
-  cp = answer->buf + HFIXEDSZ;
-  if (qdcount != 1)
-    {
-      *h_errnop = NO_RECOVERY;
-      return NSS_STATUS_UNAVAIL;
-    }
-
-  n = dn_expand (answer->buf, end_of_message, cp, bp, linebuflen);
-  if (n < 0 || (*name_ok) (bp) == 0)
-    {
-      *h_errnop = NO_RECOVERY;
-      return NSS_STATUS_UNAVAIL;
-    }
-  cp += n + QFIXEDSZ;
-
-  if (qtype == T_A || qtype == T_AAAA)
-    {
-      /* res_send() has already verified that the query name is the
-       * same as the one we sent; this just gets the expanded name
-       * (i.e., with the succeeding search-domain tacked on).
-       */
-      n = strlen (bp) + 1;             /* for the \0 */
-      result->h_name = bp;
-      bp += n;
-      linebuflen -= n;
-      /* The qname can be abbreviated, but h_name is now absolute. */
-      qname = result->h_name;
-    }
-
-  ap = host_data->aliases;
-  *ap = NULL;
-  result->h_aliases = host_data->aliases;
-  hap = host_data->h_addr_ptrs;
-  *hap = NULL;
-  result->h_addr_list = host_data->h_addr_ptrs;
-  haveanswer = 0;
-  had_error = 0;
-
-  while (ancount-- > 0 && cp < end_of_message && had_error == 0)
-    {
-      int type, class;
-
-      n = dn_expand (answer->buf, end_of_message, cp, bp, linebuflen);
-      if (n < 0 || (*name_ok) (bp) == 0)
-	{
-	  ++had_error;
-	  continue;
-	}
-      cp += n;				/* name */
-      type = _getshort (cp);
-      cp += INT16SZ;			/* type */
-      class = _getshort(cp);
-      cp += INT16SZ + INT32SZ;		/* class, TTL */
-      n = _getshort(cp);
-      cp += INT16SZ;			/* len */
-      if (class != C_IN)
-	{
-	  /* XXX - debug? syslog? */
-	  cp += n;
-	  continue;			/* XXX - had_error++ ? */
-	}
-
-      if ((qtype ==T_A || qtype == T_AAAA) && type == T_CNAME)
-	{
-	  if (ap >= &host_data->aliases[MAX_NR_ALIASES - 1])
-	    continue;
-	  n = dn_expand (answer->buf, end_of_message, cp, tbuf, sizeof tbuf);
-	  if (n < 0 || (*name_ok) (tbuf) == 0)
-	    {
-	      ++had_error;
-	      continue;
-	    }
-	  cp += n;
-	  /* Store alias.  */
-	  *ap++ = bp;
-	  n = strlen (bp) + 1;		/* For the \0.  */
-	  bp += n;
-	  linebuflen -= n;
-	  /* Get canonical name.  */
-	  n = strlen (tbuf) + 1;	/* For the \0.  */
-	  if (n > buflen)
-	    {
-	      ++had_error;
-	      continue;
-	    }
-	  strcpy (bp, tbuf);		/* Cannot overflow.  */
-	  result->h_name = bp;
-	  bp += n;
-	  linebuflen -= n;
-	  continue;
-	}
-
-      if (qtype == T_PTR && type == T_CNAME)
-	{
-	  n = dn_expand (answer->buf, end_of_message, cp, tbuf, sizeof tbuf);
-	  if (n < 0 || res_hnok (tbuf) == 0)
-	    {
-	      ++had_error;
-	      continue;
-	    }
-	  cp += n;
-	  /* Get canonical name. */
-	  n = strlen (tbuf) + 1;   /* For the \0.  */
-	  if (n > buflen)
-	    {
-	      ++had_error;
-	      continue;
-	    }
-	  strcpy (bp, tbuf);		/* Cannot overflow.  */
-	  tname = bp;
-	  bp += n;
-	  linebuflen -= n;
-	  continue;
-	}
-      if (type != qtype)
-	{
-	  syslog (LOG_NOTICE | LOG_AUTH,
-	       "gethostby*.getanswer: asked for \"%s %s %s\", got type \"%s\"",
-		  qname, p_class (C_IN), p_type (qtype), p_type (type));
-	  cp += n;
-	  continue;			/* XXX - had_error++ ? */
-	}
-
-      switch (type)
-	{
-	case T_PTR:
-	  if (strcasecmp (tname, bp) != 0)
-	    {
-	      syslog (LOG_NOTICE | LOG_AUTH, AskedForGot, qname, bp);
-	      cp += n;
-	      continue;			/* XXX - had_error++ ? */
-	    }
-	  n = dn_expand (answer->buf, end_of_message, cp, bp, linebuflen);
-	  if (n < 0 || res_hnok (bp) == 0)
-	    {
-	      ++had_error;
-	      break;
-	    }
-#if MULTI_PTRS_ARE_ALIASES
-	  cp += n;
-	  if (haveanswer == 0)
-	    result->h_name = bp;
-	  else if (ap < &host_data->aliases[MAXALIASES-1])
-	    *ap++ = bp;
-	  else
-	    n = -1;
-	  if (n != -1)
-	    {
-	      n = strlen (bp) + 1;	/* for the \0 */
-	      bp += n;
-	      linebuflen -= n;
-	    }
-	  break;
-#else
-	  result->h_name = bp;
-	  if (_res.options & RES_USE_INET6)
-	    {
-	      n = strlen (bp) + 1;	/* for the \0 */
-	      bp += n;
-	      linebuflen -= n;
-	      map_v4v6_hostent (result, &bp, &linebuflen);
-	    }
-	  *h_errnop = NETDB_SUCCESS;
-	  return NSS_STATUS_SUCCESS;
-#endif
-	case T_A:
-	case T_AAAA:
-	  if (strcasecmp (result->h_name, bp) != 0)
-	    {
-	      syslog (LOG_NOTICE | LOG_AUTH, AskedForGot, result->h_name, bp);
-	      cp += n;
-	      continue;			/* XXX - had_error++ ? */
-	    }
-	  if (n != result->h_length)
-	    {
-	      cp += n;
-	      continue;
-	    }
-	  if (!haveanswer)
-	    {
-	      register int nn;
-
-	      result->h_name = bp;
-	      nn = strlen (bp) + 1;	/* for the \0 */
-	      bp += nn;
-	      linebuflen -= nn;
-	    }
-
-	  bp += sizeof (align) - ((u_long) bp % sizeof (align));
-
-	  if (n >= linebuflen)
-	    {
-	      ++had_error;
-	      continue;
-	    }
-	  if (hap >= &host_data->h_addr_ptrs[MAX_NR_ADDRS-1])
-	    {
-	      cp += n;
-	      continue;
-	    }
-	  bcopy (cp, *hap++ = bp, n);
-	  bp += n;
-	  cp += n;
-	  linebuflen -= n;
-	  break;
-	default:
-	  abort ();
-	}
-      if (had_error == 0)
-	++haveanswer;
-    }
-
-  if (haveanswer > 0)
-    {
-      *ap = NULL;
-      *hap = NULL;
-#if defined(RESOLVSORT)
-      /*
-       * Note: we sort even if host can take only one address
-       * in its return structures - should give it the "best"
-       * address in that case, not some random one
-       */
-      if (_res.nsort && haveanswer > 1 && qtype == T_A)
-	addrsort (host_data->h_addr_ptrs, haveanswer);
-#endif /*RESOLVSORT*/
-
-      if (result->h_name == NULL)
-	{
-	  n = strlen (qname) + 1;	/* For the \0.  */
-	  if (n > linebuflen)
-	    goto try_again;
-	  strcpy (bp, qname);		/* Cannot overflow.  */
-	  result->h_name = bp;
-	  bp += n;
-	  linebuflen -= n;
-	}
-
-      if (_res.options & RES_USE_INET6)
-	map_v4v6_hostent (result, &bp, &linebuflen);
-      *h_errnop = NETDB_SUCCESS;
-      return NSS_STATUS_SUCCESS;
-    }
-try_again:
-  *h_errnop = TRY_AGAIN;
-  return NSS_STATUS_TRYAGAIN;
-}