WireGuard for MacOS (#248)

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

client/daemon/daemon.h

@@ -0,0 +1,83 @@
+/* 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 DAEMON_H
+#define DAEMON_H
+
+#include <QDateTime>
+#include <QTimer>
+
+#include "dnsutils.h"
+#include "interfaceconfig.h"
+#include "iputils.h"
+#include "wireguardutils.h"
+
+class Daemon : public QObject {
+  Q_OBJECT
+
+ public:
+  enum Op {
+    Up,
+    Down,
+    Switch,
+  };
+
+  explicit Daemon(QObject* parent);
+  ~Daemon();
+
+  static Daemon* instance();
+
+  static bool parseConfig(const QJsonObject& obj, InterfaceConfig& config);
+
+  virtual bool activate(const InterfaceConfig& config);
+  virtual bool deactivate(bool emitSignals = true);
+  virtual QJsonObject getStatus();
+
+  // Callback before any Activating measure is done
+  virtual void prepareActivation(const InterfaceConfig& config){
+      Q_UNUSED(config)};
+
+  QString logs();
+  void cleanLogs();
+
+ signals:
+  void connected(const QString& pubkey);
+  void disconnected();
+  void backendFailure();
+
+ private:
+  bool maybeUpdateResolvers(const InterfaceConfig& config);
+
+ protected:
+  virtual bool run(Op op, const InterfaceConfig& config) {
+    Q_UNUSED(op);
+    Q_UNUSED(config);
+    return true;
+  }
+  virtual bool supportServerSwitching(const InterfaceConfig& config) const;
+  virtual bool switchServer(const InterfaceConfig& config);
+  virtual WireguardUtils* wgutils() const = 0;
+  virtual bool supportIPUtils() const { return false; }
+  virtual IPUtils* iputils() { return nullptr; }
+  virtual bool supportDnsUtils() const { return false; }
+  virtual DnsUtils* dnsutils() { return nullptr; }
+
+  static bool parseStringList(const QJsonObject& obj, const QString& name,
+                              QStringList& list);
+
+  void checkHandshake();
+
+  class ConnectionState {
+   public:
+    ConnectionState(){};
+    ConnectionState(const InterfaceConfig& config) { m_config = config; }
+    QDateTime m_date;
+    InterfaceConfig m_config;
+  };
+  QMap<int, ConnectionState> m_connections;
+  QHash<QHostAddress, int> m_excludedAddrSet;
+  QTimer m_handshakeTimer;
+};
+
+#endif  // DAEMON_H