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102 lines
2.6 KiB
102 lines
2.6 KiB
// Copyright (c) 2010 Satoshi Nakamoto |
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// Copyright (c) 2009-2012 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 <set> |
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#include <string> |
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#include "uint256.h" |
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#include "util.h" |
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class CNode; |
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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 nRelayUntil; // when newer nodes stop relaying to newer nodes |
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int64 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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( |
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READWRITE(this->nVersion); |
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nVersion = this->nVersion; |
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READWRITE(nRelayUntil); |
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READWRITE(nExpiration); |
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READWRITE(nID); |
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READWRITE(nCancel); |
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READWRITE(setCancel); |
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READWRITE(nMinVer); |
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READWRITE(nMaxVer); |
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READWRITE(setSubVer); |
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READWRITE(nPriority); |
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READWRITE(strComment); |
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READWRITE(strStatusBar); |
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READWRITE(strReserved); |
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) |
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void SetNull(); |
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std::string ToString() const; |
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void print() 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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( |
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READWRITE(vchMsg); |
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READWRITE(vchSig); |
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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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