1: /* Copyright (c) 1997, 1998, 1999, 2004, 2005 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: typedef bool_t (*iofct_t) (XDR *, void *);
   27: typedef void (*freefct_t) (void *);
   28: 
   29: 
   30: static void *
   31: read_nis_obj (const char *name, iofct_t readfct, freefct_t freefct,
   32:               size_t objsize)
   33: {
   34:   FILE *in = fopen (name, "rc");
   35:   if (in == NULL)
   36:     return NULL;
   37: 
   38:   void *obj = calloc (1, objsize);
   39: 
   40:   if (obj != NULL)
   41:     {
   42:       XDR xdrs;
   43:       xdrstdio_create (&xdrs, in, XDR_DECODE);
   44:       bool_t status = readfct (&xdrs, obj);
   45:       xdr_destroy (&xdrs);
   46: 
   47:       if (!status)
   48:         {
   49:           freefct (obj);
   50:           obj = NULL;
   51:         }
   52:     }
   53: 
   54:   fclose (in);
   55: 
   56:   return obj;
   57: }
   58: 
   59: static bool_t
   60: write_nis_obj (const char *name, const void *obj, iofct_t writefct)
   61: {
   62:   FILE *out = fopen (name, "w");
   63:   if (out == NULL)
   64:     return FALSE;
   65: 
   66:   XDR xdrs;
   67:   xdrstdio_create (&xdrs, out, XDR_ENCODE);
   68:   bool_t status = writefct (&xdrs, (void *) obj);
   69:   xdr_destroy (&xdrs);
   70:   fclose (out);
   71: 
   72:   return status;
   73: }
   74: 
   75: 
   76: static const char cold_start_file[] = "/var/nis/NIS_COLD_START";
   77: 
   78: directory_obj *
   79: readColdStartFile (void)
   80: {
   81:   return read_nis_obj (cold_start_file, (iofct_t) _xdr_directory_obj,
   82:                        (freefct_t) nis_free_directory, sizeof (directory_obj));
   83: }
   84: libnsl_hidden_def (readColdStartFile)
   85: 
   86: bool_t
   87: writeColdStartFile (const directory_obj *obj)
   88: {
   89:   return write_nis_obj (cold_start_file, obj, (iofct_t) _xdr_directory_obj);
   90: }
   91: 
   92: nis_object *
   93: nis_read_obj (const char *name)
   94: {
   95:   return read_nis_obj (name, (iofct_t) _xdr_nis_object,
   96:                        (freefct_t) nis_free_object, sizeof (nis_object));
   97: }
   98: 
   99: bool_t
  100: nis_write_obj (const char *name, const nis_object *obj)
  101: {
  102:   return write_nis_obj (name, obj, (iofct_t) _xdr_nis_object);
  103: }