1 files changed, 81 insertions, 0 deletions
diff --git a/source3/registry/reg_backend_current_version.c b/source3/registry/reg_backend_current_version.c
new file mode 100644
index 0000000000..a9d281c522
--- /dev/null
+++ b/source3/registry/reg_backend_current_version.c
@@ -0,0 +1,81 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  Virtual Windows Registry Layer
+ *  Copyright (C) Gerald Carter     2002-2005
+ *  Copyright (C) Michael Adam      2008
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * CurrentVersion registry backend.
+ *
+ * This is a virtual overlay, dynamically presenting version information.
+ */
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_REGISTRY
+
+extern REGISTRY_OPS regdb_ops;
+
+#define KEY_CURRENT_VERSION_NORM "HKLM/SOFTWARE/MICROSOFT/WINDOWS NT/CURRENTVERSION"
+
+static int current_version_fetch_values(const char *key, REGVAL_CTR *values)
+{
+	const char *sysroot_string = "c:\\Windows";
+	fstring sysversion;
+	fstring value;
+	uint32 value_length;
+	char *path = NULL;
+	TALLOC_CTX *ctx = talloc_tos();
+
+	path = talloc_strdup(ctx, key);
+	if (path == NULL) {
+		return -1;
+	}
+	path = normalize_reg_path(ctx, path);
+	if (path == NULL) {
+		return -1;
+	}
+
+	if (strncmp(path, KEY_CURRENT_VERSION_NORM, strlen(path)) != 0) {
+		return 0;
+	}
+
+	value_length = push_ucs2(value, value, sysroot_string, sizeof(value),
+				 STR_TERMINATE|STR_NOALIGN );
+	regval_ctr_addvalue(values, "SystemRoot", REG_SZ, value, value_length);
+
+	fstr_sprintf(sysversion, "%d.%d", lp_major_announce_version(),
+		     lp_minor_announce_version());
+	value_length = push_ucs2(value, value, sysversion, sizeof(value),
+				 STR_TERMINATE|STR_NOALIGN);
+	regval_ctr_addvalue(values, "CurrentVersion", REG_SZ, value,
+			    value_length);
+
+	return regval_ctr_numvals(values);
+}
+
+static int current_version_fetch_subkeys(const char *key,
+					 REGSUBKEY_CTR *subkey_ctr)
+{
+	return regdb_ops.fetch_subkeys(key, subkey_ctr);
+}
+
+REGISTRY_OPS current_version_reg_ops = {
+	.fetch_values = current_version_fetch_values,
+	.fetch_subkeys = current_version_fetch_subkeys,
+};