1/* Copyright (c) 1997-2021 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, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <stdio.h>
20#include <stdlib.h>
21#include <string.h>
22#include <rpcsvc/nis.h>
23#include <shlib-compat.h>
24#include "nis_xdr.h"
25
26typedef bool_t (*iofct_t) (XDR *, void *);
27typedef void (*freefct_t) (void *);
28
29
30static void *
31read_nis_obj (const char *name, iofct_t readfct, freefct_t freefct,
32 size_t objsize)
33{
34 FILE *in = fopen (name, "rce");
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
59static bool_t
60write_nis_obj (const char *name, const void *obj, iofct_t writefct)
61{
62 FILE *out = fopen (name, "wce");
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
76static const char cold_start_file[] = "/var/nis/NIS_COLD_START";
77
78directory_obj *
79readColdStartFile (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}
84libnsl_hidden_nolink_def (readColdStartFile, GLIBC_2_1)
85
86bool_t
87writeColdStartFile (const directory_obj *obj)
88{
89 return write_nis_obj (cold_start_file, obj, (iofct_t) _xdr_directory_obj);
90}
91libnsl_hidden_nolink_def (writeColdStartFile, GLIBC_2_1)
92
93nis_object *
94nis_read_obj (const char *name)
95{
96 return read_nis_obj (name, (iofct_t) _xdr_nis_object,
97 (freefct_t) nis_free_object, sizeof (nis_object));
98}
99libnsl_hidden_nolink_def (nis_read_obj, GLIBC_2_1)
100
101bool_t
102nis_write_obj (const char *name, const nis_object *obj)
103{
104 return write_nis_obj (name, obj, (iofct_t) _xdr_nis_object);
105}
106libnsl_hidden_nolink_def (nis_write_obj, GLIBC_2_1)
107