xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame^] | 1 | /* Copyright (c) 1997-2016 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_def (readColdStartFile) |
| 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 | |
| 91 | nis_object * |
| 92 | nis_read_obj (const char *name) |
| 93 | { |
| 94 | return read_nis_obj (name, (iofct_t) _xdr_nis_object, |
| 95 | (freefct_t) nis_free_object, sizeof (nis_object)); |
| 96 | } |
| 97 | |
| 98 | bool_t |
| 99 | nis_write_obj (const char *name, const nis_object *obj) |
| 100 | { |
| 101 | return write_nis_obj (name, obj, (iofct_t) _xdr_nis_object); |
| 102 | } |