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1 | /* Copyright (c) 1997-2017 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 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <stdio.h> | |
20 | #include <stdlib.h> | |
21 | #include <string.h> | |
22 | #include <rpcsvc/nis.h> | |
23 | #include "nis_xdr.h" | |
24 | ||
25 | typedef bool_t (*iofct_t) (XDR *, void *); | |
26 | typedef void (*freefct_t) (void *); | |
27 | ||
28 | ||
29 | static void * | |
30 | read_nis_obj (const char *name, iofct_t readfct, freefct_t freefct, | |
31 | size_t objsize) | |
32 | { | |
33 | FILE *in = fopen (name, "rce"); | |
34 | if (in == NULL) | |
35 | return NULL; | |
36 | ||
37 | void *obj = calloc (1, objsize); | |
38 | ||
39 | if (obj != NULL) | |
40 | { | |
41 | XDR xdrs; | |
42 | xdrstdio_create (&xdrs, in, XDR_DECODE); | |
43 | bool_t status = readfct (&xdrs, obj); | |
44 | xdr_destroy (&xdrs); | |
45 | ||
46 | if (!status) | |
47 | { | |
48 | freefct (obj); | |
49 | obj = NULL; | |
50 | } | |
51 | } | |
52 | ||
53 | fclose (in); | |
54 | ||
55 | return obj; | |
56 | } | |
57 | ||
58 | static bool_t | |
59 | write_nis_obj (const char *name, const void *obj, iofct_t writefct) | |
60 | { | |
61 | FILE *out = fopen (name, "wce"); | |
62 | if (out == NULL) | |
63 | return FALSE; | |
64 | ||
65 | XDR xdrs; | |
66 | xdrstdio_create (&xdrs, out, XDR_ENCODE); | |
67 | bool_t status = writefct (&xdrs, (void *) obj); | |
68 | xdr_destroy (&xdrs); | |
69 | fclose (out); | |
70 | ||
71 | return status; | |
72 | } | |
73 | ||
74 | ||
75 | static const char cold_start_file[] = "/var/nis/NIS_COLD_START"; | |
76 | ||
77 | directory_obj * | |
78 | readColdStartFile (void) | |
79 | { | |
80 | return read_nis_obj (cold_start_file, (iofct_t) _xdr_directory_obj, | |
81 | (freefct_t) nis_free_directory, sizeof (directory_obj)); | |
82 | } | |
83 | libnsl_hidden_nolink_def (readColdStartFile, GLIBC_2_1) | |
84 | ||
85 | bool_t | |
86 | writeColdStartFile (const directory_obj *obj) | |
87 | { | |
88 | return write_nis_obj (cold_start_file, obj, (iofct_t) _xdr_directory_obj); | |
89 | } | |
90 | libnsl_hidden_nolink_def (writeColdStartFile, GLIBC_2_1) | |
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 | libnsl_hidden_nolink_def (nis_read_obj, GLIBC_2_1) | |
99 | ||
100 | bool_t | |
101 | nis_write_obj (const char *name, const nis_object *obj) | |
102 | { | |
103 | return write_nis_obj (name, obj, (iofct_t) _xdr_nis_object); | |
104 | } | |
105 | libnsl_hidden_nolink_def (nis_write_obj, GLIBC_2_1) |