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 };