Capability.h

Go to the documentation of this file.

/*
        This file is part of cpp-ethereum.

        cpp-ethereum is free software: you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation, either version 3 of the License, or
        (at your option) any later version.

        cpp-ethereum is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once

#include "Common.h"
#include "HostCapability.h"

namespace dev
{
namespace p2p
{

class ReputationManager;

class Capability: public std::enable_shared_from_this<Capability>
{
        friend class Session;

public:
        Capability(std::shared_ptr<SessionFace> _s, HostCapabilityFace* _h, unsigned _idOffset, uint16_t _protocolID);
        virtual ~Capability() {}

        // Implement these in the derived class.
/*      static std::string name() { return ""; }
        static u256 version() { return 0; }
        static unsigned messageCount() { return 0; }
*/
protected:
        std::shared_ptr<SessionFace> session() const { return m_session.lock(); }
        HostCapabilityFace* hostCapability() const { return m_hostCap; }

        virtual bool interpret(unsigned _id, RLP const&) = 0;

        void disable(std::string const& _problem);

        RLPStream& prep(RLPStream& _s, unsigned _id, unsigned _args = 0);
        void sealAndSend(RLPStream& _s);
        void addRating(int _r);

        uint16_t const c_protocolID;

private:
        std::weak_ptr<SessionFace> m_session;
        HostCapabilityFace* m_hostCap;
        bool m_enabled = true;
        unsigned m_idOffset;
};

}
}