s3:registry: move reg_objects.h to registry/ and use it only where needed
[kai/samba.git] / source3 / registry / reg_backend_current_version.c
1 /*
2  *  Unix SMB/CIFS implementation.
3  *  Virtual Windows Registry Layer
4  *  Copyright (C) Gerald Carter     2002-2005
5  *  Copyright (C) Michael Adam      2008
6  *
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; either version 3 of the License, or
10  *  (at your option) any later version.
11  *
12  *  This program is distributed in the hope that it will be useful,
13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *  GNU General Public License for more details.
16  *
17  *  You should have received a copy of the GNU General Public License
18  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
19  */
20
21 /*
22  * CurrentVersion registry backend.
23  *
24  * This is a virtual overlay, dynamically presenting version information.
25  */
26
27 #include "includes.h"
28 #include "registry.h"
29 #include "reg_util_internal.h"
30 #include "reg_objects.h"
31
32 #undef DBGC_CLASS
33 #define DBGC_CLASS DBGC_REGISTRY
34
35 extern struct registry_ops regdb_ops;
36
37 #define KEY_CURRENT_VERSION_NORM "HKLM/SOFTWARE/MICROSOFT/WINDOWS NT/CURRENTVERSION"
38
39 static int current_version_fetch_values(const char *key, struct regval_ctr *values)
40 {
41         const char *sysroot_string = "c:\\Windows";
42         fstring sysversion;
43         char *path = NULL;
44         TALLOC_CTX *ctx = talloc_tos();
45
46         path = talloc_strdup(ctx, key);
47         if (path == NULL) {
48                 return -1;
49         }
50         path = normalize_reg_path(ctx, path);
51         if (path == NULL) {
52                 return -1;
53         }
54
55         if (strncmp(path, KEY_CURRENT_VERSION_NORM, strlen(path)) != 0) {
56                 return regdb_ops.fetch_values(key, values);
57         }
58
59         regval_ctr_addvalue_sz(values, "SystemRoot", sysroot_string);
60
61         fstr_sprintf(sysversion, "%d.%d", lp_major_announce_version(),
62                      lp_minor_announce_version());
63
64         regval_ctr_addvalue_sz(values, "CurrentVersion", sysversion);
65
66         return regval_ctr_numvals(values);
67 }
68
69 static int current_version_fetch_subkeys(const char *key,
70                                          struct regsubkey_ctr *subkey_ctr)
71 {
72         return regdb_ops.fetch_subkeys(key, subkey_ctr);
73 }
74
75 struct registry_ops current_version_reg_ops = {
76         .fetch_values = current_version_fetch_values,
77         .fetch_subkeys = current_version_fetch_subkeys,
78 };