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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_CONSENSUS_VALIDATION_H
#define BITCOIN_CONSENSUS_VALIDATION_H
#include <string>
/** "reject" message codes */
static const unsigned char REJECT_MALFORMED = 0x01;
static const unsigned char REJECT_INVALID = 0x10;
static const unsigned char REJECT_OBSOLETE = 0x11;
static const unsigned char REJECT_DUPLICATE = 0x12;
static const unsigned char REJECT_NONSTANDARD = 0x40;
static const unsigned char REJECT_DUST = 0x41;
static const unsigned char REJECT_INSUFFICIENTFEE = 0x42;
static const unsigned char REJECT_CHECKPOINT = 0x43;
/** Capture information about block/transaction validation */
class CValidationState {
private:
enum mode_state {
MODE_VALID, //! everything ok
MODE_INVALID, //! network rule violation (DoS value may be set)
MODE_ERROR, //! run-time error
} mode;
int nDoS;
std::string strRejectReason;
unsigned char chRejectCode;
bool corruptionPossible;
public:
CValidationState() : mode(MODE_VALID), nDoS(0), chRejectCode(0), corruptionPossible(false) {}
bool DoS(int level, bool ret = false,
unsigned char chRejectCodeIn=0, std::string strRejectReasonIn="",
bool corruptionIn=false) {
chRejectCode = chRejectCodeIn;
strRejectReason = strRejectReasonIn;
corruptionPossible = corruptionIn;
if (mode == MODE_ERROR)
return ret;
nDoS += level;
mode = MODE_INVALID;
return ret;
}
bool Invalid(bool ret = false,
unsigned char _chRejectCode=0, std::string _strRejectReason="") {
return DoS(0, ret, _chRejectCode, _strRejectReason);
}
bool Error(const std::string& strRejectReasonIn) {
if (mode == MODE_VALID)
strRejectReason = strRejectReasonIn;
mode = MODE_ERROR;
return false;
}
bool IsValid() const {
return mode == MODE_VALID;
}
bool IsInvalid() const {
return mode == MODE_INVALID;
}
bool IsError() const {
return mode == MODE_ERROR;
}
bool IsInvalid(int &nDoSOut) const {
if (IsInvalid()) {
nDoSOut = nDoS;
return true;
}
return false;
}
bool CorruptionPossible() const {
return corruptionPossible;
}
unsigned char GetRejectCode() const { return chRejectCode; }
std::string GetRejectReason() const { return strRejectReason; }
};
#endif // BITCOIN_CONSENSUS_VALIDATION_H
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