WireGuard for MacOS (#248)

* WireGuard for MacOS
* Fix openvpn block-outside-dns

client/mozilla/networkwatcher.h

@@ -0,0 +1,49 @@
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+#ifndef NETWORKWATCHER_H
+#define NETWORKWATCHER_H
+
+#include <QElapsedTimer>
+#include <QMap>
+#include <QObject>
+
+class NetworkWatcherImpl;
+
+// This class watches for network changes to detect unsecured wifi.
+class NetworkWatcher final : public QObject {
+  Q_OBJECT
+  Q_DISABLE_COPY_MOVE(NetworkWatcher)
+
+ public:
+  NetworkWatcher();
+  ~NetworkWatcher();
+
+  void initialize();
+
+  // public for the inspector.
+  void unsecuredNetwork(const QString& networkName, const QString& networkId);
+
+  QString getCurrentTransport();
+
+ signals:
+  void networkChange();
+
+ private:
+  void settingsChanged();
+
+ private:
+  bool m_active = false;
+  bool m_reportUnsecuredNetwork = false;
+
+  // Platform-specific implementation.
+  NetworkWatcherImpl* m_impl = nullptr;
+
+  QMap<QString, QElapsedTimer> m_networks;
+
+  // This is used to connect NotificationHandler lazily.
+  bool m_firstNotification = true;
+};
+
+#endif  // NETWORKWATCHER_H