RCF - Interprocess Communication for C++

//*****************************************************************************
// RCF - Remote Call Framework
// Copyright (c) 2005. All rights reserved.
// Developed by Jarl Lindrud.
// Contact: jlindrud@hotmail.com .
//*****************************************************************************

#ifndef INCLUDE_RCF_OPENSSLENCRYPTIONFILTER_HPP
#define INCLUDE_RCF_OPENSSLENCRYPTIONFILTER_HPP

#include <memory>
#include <string>

#include <boost/noncopyable.hpp>
#include <boost/shared_ptr.hpp>

#include <RCF/AsyncFilter.hpp>

namespace RCF {

    static const int RCF_FILTER_OPENSSL_ENCRYPTION = 2;

    /// Enumeration describing the role in a SSL conversation that an endpoint is playing.
    enum SslRole
    {
        SslServer,
        SslClient
    };

    /// Filter implementing the SSL encryption protocol, through the OpenSSL library.
    class OpenSslEncryptionFilter : public IdentityFilter, boost::noncopyable
    {
    public:
        static FilterDescription sGetFilterDescription();
        FilterDescription getFilterDescription() const;
        OpenSslEncryptionFilter(SslRole sslRole, const std::string &certificateFile, const std::string &certificateFilePassword, unsigned int bioBufferSize = 2048);
        void read(char *buffer, std::size_t bufferLen);
        void write(const char *buffer, std::size_t bufferLen);
        void onReadWriteCompleted(std::size_t bytesTransferred, int error);

    private:
        friend class OpenSslEncryptionFilterImpl;
        boost::shared_ptr<OpenSslEncryptionFilterImpl> implPtr;
    };

    /// Filter factory for OpenSslEncryptionFilter.
    class OpenSslEncryptionFilterFactory : public FilterFactory
    {
    public:
        OpenSslEncryptionFilterFactory(const std::string &certificateFile, const std::string &certificateFilePassword, bool serverRole = true);
        FilterPtr createFilter();
        FilterDescription getFilterDescription();

    private:
        std::string mCertificateFile;
        std::string mCertificateFilePassword;
        SslRole mRole;
    };


} // namespace RCF

#endif // ! INCLUDE_RCF_OPENSSLENCRYPTIONFILTER_HPP