BasicAuthority.h

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/*
    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 <libdevcrypto/Common.h>
#include "SealEngine.h"
 
namespace dev
{
namespace eth
{
 
class BasicAuthority: public SealEngineBase
{
public:
    static std::string name() { return "BasicAuthority"; }
    unsigned revision() const override { return 0; }
    unsigned sealFields() const override { return 1; }
    bytes sealRLP() const override { return rlp(Signature()); }
 
    void populateFromParent(BlockHeader&, BlockHeader const&) const override;
    StringHashMap jsInfo(BlockHeader const& _bi) const override;
    void verify(Strictness _s, BlockHeader const& _bi, BlockHeader const& _parent, bytesConstRef _block) const override;
    bool shouldSeal(Interface*) override;
    void generateSeal(BlockHeader const& _bi) override;
 
    static Signature sig(BlockHeader const& _bi) { return _bi.seal<Signature>(); }
    static BlockHeader& setSig(BlockHeader& _bi, Signature const& _sig) { _bi.setSeal(_sig); return _bi; }
    void setSecret(Secret const& _s) { m_secret = _s; }
    static void init();
 
private:
    bool onOptionChanging(std::string const& _name, bytes const& _value) override;
 
    Secret m_secret;
    AddressHash m_authorities;
};
 
}
}