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132 lines
3.5 KiB
132 lines
3.5 KiB
/*
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This file is part of cpp-ethereum.
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cpp-ethereum is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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cpp-ethereum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file Interface.h
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* @author Gav Wood <i@gavwood.com>
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* @date 2014
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*/
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#pragma once
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#include <mutex>
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#include <array>
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#include <set>
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#include <memory>
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#include <utility>
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#include <libdevcore/RLP.h>
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#include <libdevcore/Guards.h>
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#include <libdevcrypto/SHA3.h>
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#include "Common.h"
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#include "Message.h"
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namespace dev
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{
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namespace shh
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{
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/*struct TopicMask
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{
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Topic data;
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Topic mask;
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};*/
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class Watch;
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struct InstalledFilter
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{
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InstalledFilter(TopicFilter const& _f): filter(_f) {}
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TopicFilter filter;
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unsigned refCount = 1;
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};
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struct ClientWatch
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{
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ClientWatch() {}
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explicit ClientWatch(h256 _id): id(_id) {}
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h256 id;
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h256s changes;
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};
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class Interface
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{
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public:
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virtual ~Interface() {}
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virtual void inject(Envelope const& _m, WhisperPeer* _from = nullptr) = 0;
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unsigned installWatch(TopicMask const& _mask);
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virtual unsigned installWatch(TopicFilter const& _filter) = 0;
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virtual unsigned installWatchOnId(h256 _filterId) = 0;
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virtual void uninstallWatch(unsigned _watchId) = 0;
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virtual h256s peekWatch(unsigned _watchId) const = 0;
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virtual h256s checkWatch(unsigned _watchId) = 0;
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virtual h256s watchMessages(unsigned _watchId) = 0;
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virtual Envelope envelope(h256 _m) const = 0;
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void post(bytes const& _payload, Topic _topic, unsigned _ttl = 50, unsigned _workToProve = 50) { inject(Message(_payload).seal(_topic, _ttl, _workToProve)); }
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void post(Public _to, bytes const& _payload, Topic _topic, unsigned _ttl = 50, unsigned _workToProve = 50) { inject(Message(_payload).sealTo(_to, _topic, _ttl, _workToProve)); }
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void post(Secret _from, bytes const& _payload, Topic _topic, unsigned _ttl = 50, unsigned _workToProve = 50) { inject(Message(_payload).seal(_from, _topic, _ttl, _workToProve)); }
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void post(Secret _from, Public _to, bytes const& _payload, Topic _topic, unsigned _ttl = 50, unsigned _workToProve = 50) { inject(Message(_payload).sealTo(_from, _to, _topic, _ttl, _workToProve)); }
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};
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struct WatshhChannel: public dev::LogChannel { static const char* name() { return "shh"; } static const int verbosity = 1; };
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#define cwatshh dev::LogOutputStream<shh::WatshhChannel, true>()
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}
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}
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namespace std { void swap(dev::shh::Watch& _a, dev::shh::Watch& _b); }
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namespace dev
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{
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namespace shh
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{
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class Watch: public boost::noncopyable
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{
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friend void std::swap(Watch& _a, Watch& _b);
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public:
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Watch() {}
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Watch(Interface& _c, TopicMask const& _f): m_c(&_c), m_id(_c.installWatch(_f)) {}
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Watch(Interface& _c, TopicFilter const& _tf): m_c(&_c), m_id(_c.installWatch(_tf)) {}
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~Watch() { if (m_c) m_c->uninstallWatch(m_id); }
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h256s check() { return m_c ? m_c->checkWatch(m_id) : h256s(); }
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h256s peek() { return m_c ? m_c->peekWatch(m_id) : h256s(); }
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private:
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Interface* m_c;
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unsigned m_id;
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};
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}
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}
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namespace std
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{
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inline void swap(dev::shh::Watch& _a, dev::shh::Watch& _b)
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{
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swap(_a.m_c, _b.m_c);
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swap(_a.m_id, _b.m_id);
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}
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}
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