3d796f8996
The implementation of each class' serialization/deserialization is no longer
passed within a macro. The implementation now lies within a template of form:
template <typename T, typename Stream, typename Operation>
inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
size_t nSerSize = 0;
/* CODE */
return nSerSize;
}
In cases when codepath should depend on whether or not we are just deserializing
(old fGetSize, fWrite, fRead flags) an additional clause can be used:
bool fRead = boost::is_same<Operation, CSerActionUnserialize>();
The IMPLEMENT_SERIALIZE macro will now be a freestanding clause added within
class' body (similiar to Qt's Q_OBJECT) to implement GetSerializeSize,
Serialize and Unserialize. These are now wrappers around
the "SerializationOp" template.
117 lines
3.3 KiB
C++
117 lines
3.3 KiB
C++
// Copyright (c) 2010 Satoshi Nakamoto
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// Copyright (c) 2009-2013 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef _BITCOINALERT_H_
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#define _BITCOINALERT_H_ 1
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#include "serialize.h"
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#include "sync.h"
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#include <map>
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#include <set>
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#include <stdint.h>
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#include <string>
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class CAlert;
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class CNode;
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class uint256;
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extern std::map<uint256, CAlert> mapAlerts;
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extern CCriticalSection cs_mapAlerts;
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/** Alerts are for notifying old versions if they become too obsolete and
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* need to upgrade. The message is displayed in the status bar.
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* Alert messages are broadcast as a vector of signed data. Unserializing may
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* not read the entire buffer if the alert is for a newer version, but older
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* versions can still relay the original data.
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*/
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class CUnsignedAlert
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{
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public:
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int nVersion;
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int64_t nRelayUntil; // when newer nodes stop relaying to newer nodes
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int64_t nExpiration;
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int nID;
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int nCancel;
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std::set<int> setCancel;
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int nMinVer; // lowest version inclusive
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int nMaxVer; // highest version inclusive
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std::set<std::string> setSubVer; // empty matches all
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int nPriority;
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// Actions
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std::string strComment;
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std::string strStatusBar;
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std::string strReserved;
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IMPLEMENT_SERIALIZE
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template <typename T, typename Stream, typename Operation>
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inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
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size_t nSerSize = 0;
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READWRITE(thisPtr->nVersion);
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nVersion = thisPtr->nVersion;
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READWRITE(thisPtr->nRelayUntil);
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READWRITE(thisPtr->nExpiration);
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READWRITE(thisPtr->nID);
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READWRITE(thisPtr->nCancel);
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READWRITE(thisPtr->setCancel);
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READWRITE(thisPtr->nMinVer);
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READWRITE(thisPtr->nMaxVer);
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READWRITE(thisPtr->setSubVer);
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READWRITE(thisPtr->nPriority);
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READWRITE(LIMITED_STRING(thisPtr->strComment, 65536));
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READWRITE(LIMITED_STRING(thisPtr->strStatusBar, 256));
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READWRITE(LIMITED_STRING(thisPtr->strReserved, 256));
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return nSerSize;
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}
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void SetNull();
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std::string ToString() const;
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};
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/** An alert is a combination of a serialized CUnsignedAlert and a signature. */
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class CAlert : public CUnsignedAlert
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{
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public:
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std::vector<unsigned char> vchMsg;
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std::vector<unsigned char> vchSig;
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CAlert()
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{
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SetNull();
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}
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IMPLEMENT_SERIALIZE
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template <typename T, typename Stream, typename Operation>
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inline static size_t SerializationOp(T thisPtr, Stream& s, Operation ser_action, int nType, int nVersion) {
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size_t nSerSize = 0;
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READWRITE(thisPtr->vchMsg);
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READWRITE(thisPtr->vchSig);
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return nSerSize;
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}
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void SetNull();
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bool IsNull() const;
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uint256 GetHash() const;
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bool IsInEffect() const;
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bool Cancels(const CAlert& alert) const;
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bool AppliesTo(int nVersion, std::string strSubVerIn) const;
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bool AppliesToMe() const;
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bool RelayTo(CNode* pnode) const;
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bool CheckSignature() const;
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bool ProcessAlert(bool fThread = true);
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/*
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* Get copy of (active) alert object by hash. Returns a null alert if it is not found.
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*/
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static CAlert getAlertByHash(const uint256 &hash);
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};
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#endif
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