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@suse.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 Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the 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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    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;
  86
  87   in = fopen (name, "rb");
  88   if (in == NULL)
  89     return NULL;
  90
  91   obj = calloc (1, sizeof (nis_object));
  92   if (obj == NULL)
  93     {
  94       fclose (in);
  95       return NULL;
  96     }
  97
  98   xdrstdio_create (&xdrs, in, XDR_DECODE);
  99   status =_xdr_nis_object (&xdrs, obj);
 100   xdr_destroy (&xdrs);
 101   fclose (in);
 102
 103   if (status)
 104     return obj;
 105   else
 106     {
 107       nis_free_object (obj);
 108       return NULL;
 109     }
 110 }
 111
 112 bool_t
 113 nis_write_obj (const char *name, const nis_object *obj)
 114 {
 115   XDR xdrs;
 116   FILE *out;
 117   bool_t status;
 118
 119   out = fopen (name, "wb");
 120   if (out == NULL)
 121     return FALSE;
 122
 123   xdrstdio_create (&xdrs, out, XDR_ENCODE);
 124   status = _xdr_nis_object (&xdrs, (nis_object *) obj);
 125   xdr_destroy (&xdrs);
 126   fclose (out);
 127
 128   return status;
 129 }