text: /* Copyright (C) 1996,1997,1999,2000,2002,2003,2004,2005,2006
     Free Software Foundation, Inc.
     This file is part of the GNU C Library.
     Contributed by Thorsten Kukuk <kukuk@suse.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, see
     <http://www.gnu.org/licenses/>.  */
  
  #include <assert.h>
  #include <ctype.h>
  #include <errno.h>
  #include <malloc.h>
  #include <netdb.h>
  #include <nss.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <netgroup.h>
  #include <rpcsvc/yp.h>
  #include <rpcsvc/ypclnt.h>
  
  #include "nss-nis.h"
  
  extern enum nss_status
  _nss_netgroup_parseline (char **cursor, struct __netgrent *netgrp,
  			 char *buffer, size_t buflen, int *errnop);
  
  
  static void
  internal_nis_endnetgrent (struct __netgrent *netgrp)
  {
    free (netgrp->data);
    netgrp->data = NULL;
    netgrp->data_size = 0;
    netgrp->cursor = NULL;
  }
  
  
  enum nss_status
  _nss_nis_setnetgrent (const char *group, struct __netgrent *netgrp)
  {
    int len;
    enum nss_status status;
  
    status = NSS_STATUS_SUCCESS;
  
    if (__builtin_expect (group == NULL || group[0] == '\0', 0))
      return NSS_STATUS_UNAVAIL;
  
    char *domain;
    if (__builtin_expect (yp_get_default_domain (&domain), 0))
      return NSS_STATUS_UNAVAIL;
  
    status = yperr2nss (yp_match (domain, "netgroup", group, strlen (group),
  				&netgrp->data, &len));
    if (__builtin_expect (status == NSS_STATUS_SUCCESS, 1))
      {
        /* Our implementation of yp_match already allocates a buffer
  	 which is one byte larger than the value in LEN specifies
  	 and the last byte is filled with NUL.  So we can simply
  	 use that buffer.  */
        assert (len >= 0);
        assert (malloc_usable_size (netgrp->data) >= len + 1);
        assert (netgrp->data[len] == '\0');
  
        netgrp->data_size = len;
        netgrp->cursor = netgrp->data;
      }
  
    return status;
  }
  
  
  enum nss_status
  _nss_nis_endnetgrent (struct __netgrent *netgrp)
  {
    internal_nis_endnetgrent (netgrp);
  
    return NSS_STATUS_SUCCESS;
  }
  
  
  enum nss_status
  _nss_nis_getnetgrent_r (struct __netgrent *result, char *buffer, size_t buflen,
  			int *errnop)
  {
    return _nss_netgroup_parseline (&result->cursor, result, buffer, buflen,
  				  errnop);
  }
  