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diff --git a/include/comphelper/servicehelper.hxx b/include/comphelper/servicehelper.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_COMPHELPER_SERVICEHELPER_HXX
+#define INCLUDED_COMPHELPER_SERVICEHELPER_HXX
+
+#include <rtl/uuid.h>
+#include <rtl/instance.hxx>
+#include <com/sun/star/lang/XUnoTunnel.hpp>
+#include <com/sun/star/uno/Sequence.hxx>
+
+class UnoTunnelIdInit
+{
+private:
+    css::uno::Sequence< sal_Int8 > m_aSeq;
+public:
+    UnoTunnelIdInit() : m_aSeq(16)
+    {
+        rtl_createUuid( reinterpret_cast<sal_uInt8*>(m_aSeq.getArray()), nullptr, true );
+    }
+    const css::uno::Sequence< sal_Int8 >& getSeq() const { return m_aSeq; }
+};
+
+namespace comphelper {
+
+    template<class T>
+    T* getUnoTunnelImplementation( const css::uno::Reference< css::uno::XInterface >& xIface )
+    {
+        css::uno::Reference< css::lang::XUnoTunnel > xUT( xIface, css::uno::UNO_QUERY );
+        if (!xUT.is())
+            return nullptr;
+
+        return reinterpret_cast<T*>(sal::static_int_cast<sal_IntPtr>(xUT->getSomething( T::getUnoTunnelId() )));
+    }
+
+}
+
+template <typename T>
+inline bool isUnoTunnelId(const css::uno::Sequence< sal_Int8 >& rId)
+{
+    return rId.getLength() == 16
+        && memcmp( T::getUnoTunnelId().getConstArray(), rId.getConstArray(), 16 ) == 0;
+}
+
+/** the UNO3_GETIMPLEMENTATION_* macros  implement a static helper function
+    that gives access to your implementation for a given interface reference,
+    if possible.
+
+    Example:
+        MyClass* pClass = comphelper::getUnoTunnelImplementation<MyClass>( xRef );
+
+    Usage:
+        Put a UNO3_GETIMPLEMENTATION_DECL( classname ) inside your class
+        definition and UNO3_GETIMPLEMENTATION_IMPL( classname ) inside
+        your cxx file. Your class must inherit css::lang::XUnoTunnel
+        and export it with queryInterface. Implementation of XUnoTunnel is
+        done by this macro.
+*/
+#define UNO3_GETIMPLEMENTATION_DECL( classname ) \
+    static const css::uno::Sequence< sal_Int8 > & getUnoTunnelId() throw(); \
+    virtual sal_Int64 SAL_CALL getSomething( const css::uno::Sequence< sal_Int8 >& aIdentifier ) override;
+
+#define UNO3_GETIMPLEMENTATION_BASE_IMPL( classname ) \
+namespace \
+{ \
+    class the##classname##UnoTunnelId : public rtl::Static< UnoTunnelIdInit, the##classname##UnoTunnelId> {}; \
+} \
+const css::uno::Sequence< sal_Int8 > & classname::getUnoTunnelId() throw() \
+{ \
+    return the##classname##UnoTunnelId::get().getSeq(); \
+}
+
+#define UNO3_GETIMPLEMENTATION_IMPL( classname )\
+UNO3_GETIMPLEMENTATION_BASE_IMPL(classname)\
+sal_Int64 SAL_CALL classname::getSomething( const css::uno::Sequence< sal_Int8 >& rId ) \
+{ \
+    if( isUnoTunnelId<classname>(rId) ) \
+    { \
+        return sal::static_int_cast<sal_Int64>(reinterpret_cast<sal_IntPtr>(this)); \
+    } \
+    return 0; \
+}
+
+#define UNO3_GETIMPLEMENTATION2_IMPL( classname, baseclass )\
+UNO3_GETIMPLEMENTATION_BASE_IMPL(classname)\
+sal_Int64 SAL_CALL classname::getSomething( const css::uno::Sequence< sal_Int8 >& rId ) \
+{ \
+    if( isUnoTunnelId<classname>(rId) ) \
+    { \
+        return sal::static_int_cast<sal_Int64>(reinterpret_cast<sal_IntPtr>(this)); \
+    } \
+    else \
+    { \
+        return baseclass::getSomething( rId ); \
+    } \
+}
+
+
+#endif // INCLUDED_COMPHELPER_SERVICEHELPER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */