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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_PolicyChecks_h
+#define mozilla_PolicyChecks_h
+
+#if defined(XP_WIN)
+
+# include <windows.h>
+# include "mozilla/Maybe.h"
+
+# define POLICY_REGKEY_NAME L"SOFTWARE\\Policies\\Mozilla\\" MOZ_APP_BASENAME
+
+// NB: This code must be able to run apart from XPCOM
+
+namespace mozilla {
+
+// Returns Some(true) if the registry value is 1
+// Returns Some(false) if the registry value is not 1
+// Returns Nothing() if the registry value is not present
+inline Maybe<bool> PolicyHasRegValueOfOne(HKEY aKey, LPCWSTR aName) {
+ {
+ DWORD len = sizeof(DWORD);
+ DWORD value;
+ LONG ret = ::RegGetValueW(aKey, POLICY_REGKEY_NAME, aName, RRF_RT_DWORD,
+ nullptr, &value, &len);
+ if (ret == ERROR_SUCCESS) {
+ return Some(value == 1);
+ }
+ }
+ {
+ ULONGLONG value;
+ DWORD len = sizeof(ULONGLONG);
+ LONG ret = ::RegGetValueW(aKey, POLICY_REGKEY_NAME, aName, RRF_RT_QWORD,
+ nullptr, &value, &len);
+ if (ret == ERROR_SUCCESS) {
+ return Some(value == 1);
+ }
+ }
+ return Nothing();
+}
+
+inline bool PolicyCheckBoolean(LPCWSTR aPolicyName) {
+ Maybe<bool> localMachineResult =
+ PolicyHasRegValueOfOne(HKEY_LOCAL_MACHINE, aPolicyName);
+ if (localMachineResult.isSome()) {
+ return localMachineResult.value();
+ }
+
+ Maybe<bool> currentUserResult =
+ PolicyHasRegValueOfOne(HKEY_CURRENT_USER, aPolicyName);
+ if (currentUserResult.isSome()) {
+ return currentUserResult.value();
+ }
+
+ return false;
+}
+
+} // namespace mozilla
+
+#endif // defined(XP_WIN)
+
+#endif // mozilla_PolicyChecks_h