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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
#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