1 files changed, 99 insertions, 0 deletions
diff --git a/toolkit/xre/LauncherRegistryInfo.h b/toolkit/xre/LauncherRegistryInfo.h
new file mode 100644
index 0000000000..c8d015a4ce
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+++ b/toolkit/xre/LauncherRegistryInfo.h
@@ -0,0 +1,99 @@
+/* -*- 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_LauncherRegistryInfo_h
+#define mozilla_LauncherRegistryInfo_h
+
+#include "mozilla/Maybe.h"
+#include "mozilla/WinHeaderOnlyUtils.h"
+#include "nsWindowsHelpers.h"
+
+#include <string>
+
+/**
+ * We use std::wstring here because this code must be usable within both the
+ * launcher process and Gecko itself.
+ */
+
+namespace mozilla {
+
+class LauncherRegistryInfo final {
+ public:
+  enum class ProcessType { Launcher, Browser };
+
+  enum class EnabledState {
+    Enabled,
+    FailDisabled,
+    ForceDisabled,
+  };
+
+  enum class CheckOption {
+    Default,
+    Force,
+  };
+
+  LauncherRegistryInfo() : mBinPath(GetFullBinaryPath().get()) {}
+  ~LauncherRegistryInfo() { Abort(); }
+
+  LauncherVoidResult ReflectPrefToRegistry(const bool aEnable);
+  LauncherResult<EnabledState> IsEnabled();
+  LauncherResult<bool> IsTelemetryEnabled();
+  LauncherVoidResult ReflectTelemetryPrefToRegistry(const bool aEnable);
+  LauncherResult<ProcessType> Check(
+      const ProcessType aDesiredType,
+      const CheckOption aOption = CheckOption::Default);
+  LauncherVoidResult DisableDueToFailure();
+  LauncherVoidResult Commit();
+  void Abort();
+
+ private:
+  enum class Disposition { CreatedNew, OpenedExisting };
+
+ private:
+  // This flag is to prevent the disabled state from being accidentally
+  // re-enabled by another instance.
+  static bool sAllowCommit;
+
+  static EnabledState GetEnabledState(const Maybe<uint64_t>& aLauncherTs,
+                                      const Maybe<uint64_t>& aBrowserTs);
+
+  LauncherResult<Disposition> Open();
+  LauncherVoidResult WriteLauncherStartTimestamp(uint64_t aValue);
+  LauncherVoidResult WriteBrowserStartTimestamp(uint64_t aValue);
+  LauncherVoidResult WriteImageTimestamp(DWORD aTimestamp);
+  LauncherResult<bool> ClearLauncherStartTimestamp();
+  LauncherResult<bool> ClearBrowserStartTimestamp();
+  LauncherVoidResult ClearStartTimestamps();
+  LauncherResult<Maybe<DWORD>> GetSavedImageTimestamp();
+  LauncherResult<Maybe<uint64_t>> GetLauncherStartTimestamp();
+  LauncherResult<Maybe<uint64_t>> GetBrowserStartTimestamp();
+
+  const std::wstring& ResolveLauncherValueName();
+  const std::wstring& ResolveBrowserValueName();
+  const std::wstring& ResolveImageTimestampValueName();
+  const std::wstring& ResolveTelemetryValueName();
+
+ private:
+  Maybe<uint64_t> mLauncherTimestampToWrite;
+  Maybe<uint64_t> mBrowserTimestampToWrite;
+
+  nsAutoRegKey mRegKey;
+  std::wstring mBinPath;
+  std::wstring mImageValueName;
+  std::wstring mBrowserValueName;
+  std::wstring mLauncherValueName;
+  std::wstring mTelemetryValueName;
+
+  static const wchar_t kLauncherSubKeyPath[];
+  static const wchar_t kLauncherSuffix[];
+  static const wchar_t kBrowserSuffix[];
+  static const wchar_t kImageTimestampSuffix[];
+  static const wchar_t kTelemetrySuffix[];
+};
+
+}  // namespace mozilla
+
+#endif  // mozilla_LauncherRegistryInfo_h