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
  30 #undef DBGC_CLASS
  31 #define DBGC_CLASS DBGC_REGISTRY
  32
  33 extern struct registry_ops regdb_ops;
  34
  35 #define KEY_CURRENT_VERSION_NORM "HKLM/SOFTWARE/MICROSOFT/WINDOWS NT/CURRENTVERSION"
  36
  37 static int current_version_fetch_values(const char *key, struct regval_ctr *values)
  38 {
  39         const char *sysroot_string = "c:\\Windows";
  40         fstring sysversion;
  41         char *path = NULL;
  42         TALLOC_CTX *ctx = talloc_tos();
  43
  44         path = talloc_strdup(ctx, key);
  45         if (path == NULL) {
  46                 return -1;
  47         }
  48         path = normalize_reg_path(ctx, path);
  49         if (path == NULL) {
  50                 return -1;
  51         }
  52
  53         if (strncmp(path, KEY_CURRENT_VERSION_NORM, strlen(path)) != 0) {
  54                 return regdb_ops.fetch_values(key, values);
  55         }
  56
  57         regval_ctr_addvalue_sz(values, "SystemRoot", sysroot_string);
  58
  59         fstr_sprintf(sysversion, "%d.%d", lp_major_announce_version(),
  60                      lp_minor_announce_version());
  61
  62         regval_ctr_addvalue_sz(values, "CurrentVersion", sysversion);
  63
  64         return regval_ctr_numvals(values);
  65 }
  66
  67 static int current_version_fetch_subkeys(const char *key,
  68                                          struct regsubkey_ctr *subkey_ctr)
  69 {
  70         return regdb_ops.fetch_subkeys(key, subkey_ctr);
  71 }
  72
  73 struct registry_ops current_version_reg_ops = {
  74         .fetch_values = current_version_fetch_values,
  75         .fetch_subkeys = current_version_fetch_subkeys,
  76 };