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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/>.
*/
/** @file WhisperHost.h
* @author Gav Wood <i@gavwood.com>
* @date 2014
*/
#pragma once
#include <mutex>
#include <array>
#include <set>
#include <memory>
#include <utility>
#include <libdevcore/RLP.h>
#include <libdevcore/Guards.h>
#include <libdevcrypto/SHA3.h>
#include "Common.h"
#include "Message.h"
namespace dev
{
namespace shh
{
class MessageFilter
{
public:
MessageFilter() {}
MessageFilter(std::vector<std::pair<bytes, bytes> > const& _m): m_topicMasks(_m) {}
MessageFilter(RLP const& _r): m_topicMasks((std::vector<std::pair<bytes, bytes>>)_r) {}
void fillStream(RLPStream& _s) const { _s << m_topicMasks; }
h256 sha3() const { RLPStream s; fillStream(s); return dev::eth::sha3(s.out()); }
bool matches(Message const& _m) const;
private:
std::vector<std::pair<bytes, bytes> > m_topicMasks;
};
struct InstalledFilter
{
InstalledFilter(MessageFilter const& _f): filter(_f) {}
MessageFilter filter;
unsigned refCount = 1;
};
struct ClientWatch
{
ClientWatch() {}
explicit ClientWatch(h256 _id): id(_id) {}
h256 id;
h256s changes;
};
class Interface
{
public:
virtual ~Interface() {}
virtual void inject(Message const& _m, WhisperPeer* _from = nullptr) = 0;
virtual unsigned installWatch(MessageFilter const& _filter) = 0;
virtual unsigned installWatch(h256 _filterId) = 0;
virtual void uninstallWatch(unsigned _watchId) = 0;
virtual h256s peekWatch(unsigned _watchId) const = 0;
virtual h256s checkWatch(unsigned _watchId) = 0;
virtual Message message(h256 _m) const = 0;
virtual void sendRaw(bytes const& _payload, bytes const& _topic, unsigned _ttl) = 0;
};
struct WatshhChannel: public dev::LogChannel { static const char* name() { return "shh"; } static const int verbosity = 1; };
#define cwatshh dev::LogOutputStream<shh::WatshhChannel, true>()
}
}
/*
namespace std { void swap(shh::Watch& _a, shh::Watch& _b); }
namespace shh
{
class Watch: public boost::noncopyable
{
friend void std::swap(Watch& _a, Watch& _b);
public:
Watch() {}
Watch(Whisper& _c, h256 _f): m_c(&_c), m_id(_c.installWatch(_f)) {}
Watch(Whisper& _c, MessageFilter const& _tf): m_c(&_c), m_id(_c.installWatch(_tf)) {}
~Watch() { if (m_c) m_c->uninstallWatch(m_id); }
bool check() { return m_c ? m_c->checkWatch(m_id) : false; }
bool peek() { return m_c ? m_c->peekWatch(m_id) : false; }
private:
Whisper* m_c;
unsigned m_id;
};
}
namespace shh
{
inline void swap(shh::Watch& _a, shh::Watch& _b)
{
swap(_a.m_c, _b.m_c);
swap(_a.m_id, _b.m_id);
}
}
*/