nis/nis_file.c

   1 /* Copyright (c) 1997, 1998, 1999 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Thorsten Kukuk <kukuk@vt.uni-paderborn.de>, 1997.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <rpcsvc/nis.h>
  24 #include "nis_xdr.h"
  25
  26 static const char cold_start_file[] = "/var/nis/NIS_COLD_START";
  27
  28 directory_obj *
  29 readColdStartFile (void)
  30 {
  31   XDR xdrs;
  32   FILE *in;
  33   bool_t status = TRUE;
  34   directory_obj *obj;
  35
  36   in = fopen (cold_start_file, "rb");
  37   if (in == NULL)
  38     return NULL;
  39
  40   obj = calloc (1, sizeof (directory_obj));
  41
  42   if (obj != NULL)
  43     {
  44       xdrstdio_create (&xdrs, in, XDR_DECODE);
  45       status = _xdr_directory_obj (&xdrs, obj);
  46       xdr_destroy (&xdrs);
  47
  48       if (!status)
  49         {
  50           nis_free_directory (obj);
  51           obj = NULL;
  52         }
  53     }
  54
  55   fclose (in);
  56
  57   return obj;
  58 }
  59
  60 bool_t
  61 writeColdStartFile (const directory_obj *obj)
  62 {
  63   XDR xdrs;
  64   FILE *out;
  65   bool_t status;
  66
  67   out = fopen (cold_start_file, "wb");
  68   if (out == NULL)
  69     return FALSE;
  70
  71   xdrstdio_create (&xdrs, out, XDR_ENCODE);
  72   status = _xdr_directory_obj (&xdrs, (directory_obj *) obj);
  73   xdr_destroy (&xdrs);
  74   fclose (out);
  75
  76   return status;
  77 }
  78
  79 nis_object *
  80 nis_read_obj (const char *name)
  81 {
  82   XDR xdrs;
  83   FILE *in;
  84   bool_t status;
  85   nis_object *obj = calloc (1, sizeof (nis_object));
  86
  87   if (obj == NULL)
  88     return NULL;
  89
  90   in = fopen (name, "rb");
  91   if (in == NULL)
  92     return NULL;
  93
  94   xdrstdio_create (&xdrs, in, XDR_DECODE);
  95   status =_xdr_nis_object (&xdrs, obj);
  96   xdr_destroy (&xdrs);
  97   fclose (in);
  98
  99   if (status)
 100     return obj;
 101   else
 102     {
 103       nis_free_object (obj);
 104       return NULL;
 105     }
 106 }
 107
 108 bool_t
 109 nis_write_obj (const char *name, const nis_object *obj)
 110 {
 111   XDR xdrs;
 112   FILE *out;
 113   bool_t status;
 114
 115   out = fopen (name, "wb");
 116   if (out == NULL)
 117     return FALSE;
 118
 119   xdrstdio_create (&xdrs, out, XDR_ENCODE);
 120   status = _xdr_nis_object (&xdrs, (nis_object *) obj);
 121   xdr_destroy (&xdrs);
 122   fclose (out);
 123
 124   return status;
 125 }