// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2011 The Bitcoin developers
+// Copyright (c) 2011-2012 The PPCoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file license.txt or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_MAIN_H
#include "net.h"
#include "key.h"
#include "script.h"
+#include "db.h"
#include <list>
-class COutPoint;
-class CInPoint;
-class CDiskTxPos;
-class CCoinBase;
-class CTxIn;
-class CTxOut;
-class CTransaction;
class CBlock;
class CBlockIndex;
class CWalletTx;
class CWallet;
class CKeyItem;
+class CReserveKey;
+class CWalletDB;
-class CMessageHeader;
class CAddress;
class CInv;
class CRequestTracker;
static const unsigned int MAX_BLOCK_SIZE = 1000000;
static const unsigned int MAX_BLOCK_SIZE_GEN = MAX_BLOCK_SIZE/2;
static const int MAX_BLOCK_SIGOPS = MAX_BLOCK_SIZE/50;
-static const int64 COIN = 100000000;
-static const int64 CENT = 1000000;
-static const int64 MIN_TX_FEE = 50000;
+static const int64 COIN = 1000000;
+static const int64 CENT = 10000;
+static const int64 MIN_TX_FEE = 10000;
static const int64 MIN_RELAY_TX_FEE = 10000;
-static const int64 MAX_MONEY = 21000000 * COIN;
+static const int64 MAX_MONEY = 2000000000 * COIN;
inline bool MoneyRange(int64 nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
static const int COINBASE_MATURITY = 100;
+// Threshold for nLockTime: below this value it is interpreted as block number, otherwise as UNIX timestamp.
+static const int LOCKTIME_THRESHOLD = 500000000; // Tue Nov 5 00:53:20 1985 UTC
#ifdef USE_UPNP
static const int fHaveUPnP = true;
#else
extern CCriticalSection cs_main;
extern std::map<uint256, CBlockIndex*> mapBlockIndex;
+extern std::set<std::pair<COutPoint, unsigned int> > setStakeSeen;
extern uint256 hashGenesisBlock;
-extern CBigNum bnProofOfWorkLimit;
extern CBlockIndex* pindexGenesisBlock;
extern int nBestHeight;
-extern CBigNum bnBestChainWork;
-extern CBigNum bnBestInvalidWork;
+extern uint64 nBestChainTrust;
+extern uint64 nBestInvalidTrust;
extern uint256 hashBestChain;
extern CBlockIndex* pindexBest;
-extern std::set<int64> setKeyPool;
-extern CCriticalSection cs_setKeyPool;
extern unsigned int nTransactionsUpdated;
extern double dHashesPerSec;
extern int64 nHPSTimerStart;
extern int64 nTimeBestReceived;
-extern std::map<std::string, std::string> mapAddressBook;
-extern CCriticalSection cs_mapAddressBook;
-
+extern CCriticalSection cs_setpwalletRegistered;
+extern std::set<CWallet*> setpwalletRegistered;
+extern std::map<uint256, CBlock*> mapOrphanBlocks;
// Settings
extern int fGenerateBitcoins;
extern int64 nTransactionFee;
-extern CAddress addrIncoming;
extern int fLimitProcessors;
extern int nLimitProcessors;
extern int fMinimizeToTray;
extern int fMinimizeOnClose;
extern int fUseUPnP;
+extern int64 nBalanceReserve;
class CTxDB;
class CTxIndex;
+void RegisterWallet(CWallet* pwalletIn);
+void UnregisterWallet(CWallet* pwalletIn);
+bool ProcessBlock(CNode* pfrom, CBlock* pblock);
bool CheckDiskSpace(uint64 nAdditionalBytes=0);
FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode="rb");
FILE* AppendBlockFile(unsigned int& nFileRet);
bool LoadBlockIndex(bool fAllowNew=true);
void PrintBlockTree();
bool ProcessMessages(CNode* pfrom);
-bool ProcessMessage(CNode* pfrom, std::string strCommand, CDataStream& vRecv);
bool SendMessages(CNode* pto, bool fSendTrickle);
-void GenerateBitcoins(bool fGenerate);
-void ThreadBitcoinMiner(void* parg);
-CBlock* CreateNewBlock(CReserveKey& reservekey);
-void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce, int64& nPrevTime);
+void GenerateBitcoins(bool fGenerate, CWallet* pwallet);
+CBlock* CreateNewBlock(CWallet* pwallet, bool fProofOfWorkOnly=false);
+void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce);
void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1);
-bool CheckWork(CBlock* pblock, CReserveKey& reservekey);
-void BitcoinMiner();
+bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey);
bool CheckProofOfWork(uint256 hash, unsigned int nBits);
+int64 GetProofOfStakeReward(int64 nCoinAge);
+unsigned int ComputeMinWork(unsigned int nBase, int64 nTime);
+int GetNumBlocksOfPeers();
bool IsInitialBlockDownload();
std::string GetWarnings(std::string strFor);
+bool Reorganize(CTxDB& txdb, CBlockIndex* pindexNew);
+uint256 WantedByOrphan(const CBlock* pblockOrphan);
+const CBlockIndex* GetLastBlockIndex(const CBlockIndex* pindex, bool fProofOfStake);
+
+
+bool GetWalletFile(CWallet* pwallet, std::string &strWalletFileOut);
+template<typename T>
+bool WriteSetting(const std::string& strKey, const T& value)
+{
+ bool fOk = false;
+ BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
+ {
+ std::string strWalletFile;
+ if (!GetWalletFile(pwallet, strWalletFile))
+ continue;
+ fOk |= CWalletDB(strWalletFile).WriteSetting(strKey, value);
+ }
+ return fOk;
+}
class CDiskTxPos
{
printf("%s\n", ToString().c_str());
}
-
- bool IsMine() const;
- int64 GetDebit() const;
};
return (nValue == -1);
}
- uint256 GetHash() const
- {
- return SerializeHash(*this);
- }
-
- bool IsMine() const
- {
- return ::IsMine(scriptPubKey);
- }
-
- int64 GetCredit() const
+ bool SetEmpty()
{
- if (!MoneyRange(nValue))
- throw std::runtime_error("CTxOut::GetCredit() : value out of range");
- return (IsMine() ? nValue : 0);
+ nValue = 0;
+ scriptPubKey.clear();
}
- bool IsChange() const
+ bool IsEmpty() const
{
- // On a debit transaction, a txout that's mine but isn't in the address book is change
- std::vector<unsigned char> vchPubKey;
- if (ExtractPubKey(scriptPubKey, true, vchPubKey))
- CRITICAL_BLOCK(cs_mapAddressBook)
- if (!mapAddressBook.count(PubKeyToAddress(vchPubKey)))
- return true;
- return false;
+ return (nValue == 0 && scriptPubKey.empty());
}
- int64 GetChange() const
+ uint256 GetHash() const
{
- if (!MoneyRange(nValue))
- throw std::runtime_error("CTxOut::GetChange() : value out of range");
- return (IsChange() ? nValue : 0);
+ return SerializeHash(*this);
}
friend bool operator==(const CTxOut& a, const CTxOut& b)
std::string ToString() const
{
+ if (IsEmpty()) return "CTxOut(empty)";
if (scriptPubKey.size() < 6)
return "CTxOut(error)";
- return strprintf("CTxOut(nValue=%"PRI64d".%08"PRI64d", scriptPubKey=%s)", nValue / COIN, nValue % COIN, scriptPubKey.ToString().substr(0,30).c_str());
+ return strprintf("CTxOut(nValue=%s, scriptPubKey=%s)", FormatMoney(nValue).c_str(), scriptPubKey.ToString().substr(0,30).c_str());
}
void print() const
{
public:
int nVersion;
+ unsigned int nTime;
std::vector<CTxIn> vin;
std::vector<CTxOut> vout;
unsigned int nLockTime;
+ // Denial-of-service detection:
+ mutable int nDoS;
+ bool DoS(int nDoSIn, bool fIn) const { nDoS += nDoSIn; return fIn; }
CTransaction()
{
(
READWRITE(this->nVersion);
nVersion = this->nVersion;
+ READWRITE(nTime);
READWRITE(vin);
READWRITE(vout);
READWRITE(nLockTime);
void SetNull()
{
nVersion = 1;
+ nTime = GetAdjustedTime();
vin.clear();
vout.clear();
nLockTime = 0;
+ nDoS = 0; // Denial-of-service prevention
}
bool IsNull() const
nBlockHeight = nBestHeight;
if (nBlockTime == 0)
nBlockTime = GetAdjustedTime();
- if ((int64)nLockTime < (nLockTime < 500000000 ? (int64)nBlockHeight : nBlockTime))
+ if ((int64)nLockTime < (nLockTime < LOCKTIME_THRESHOLD ? (int64)nBlockHeight : nBlockTime))
return true;
BOOST_FOREACH(const CTxIn& txin, vin)
if (!txin.IsFinal())
bool IsCoinBase() const
{
- return (vin.size() == 1 && vin[0].prevout.IsNull());
+ return (vin.size() == 1 && vin[0].prevout.IsNull() && vout.size() == 1);
+ }
+
+ bool IsCoinStake() const
+ {
+ // ppcoin: the coin stake transaction is marked with the first output empty
+ return (vin.size() > 0 && vout.size() == 2 && vout[0].IsEmpty());
}
int GetSigOpCount() const
return true;
}
- bool IsMine() const
- {
- BOOST_FOREACH(const CTxOut& txout, vout)
- if (txout.IsMine())
- return true;
- return false;
- }
-
- bool IsFromMe() const
- {
- return (GetDebit() > 0);
- }
-
- int64 GetDebit() const
- {
- int64 nDebit = 0;
- BOOST_FOREACH(const CTxIn& txin, vin)
- {
- nDebit += txin.GetDebit();
- if (!MoneyRange(nDebit))
- throw std::runtime_error("CTransaction::GetDebit() : value out of range");
- }
- return nDebit;
- }
-
- int64 GetCredit() const
- {
- int64 nCredit = 0;
- BOOST_FOREACH(const CTxOut& txout, vout)
- {
- nCredit += txout.GetCredit();
- if (!MoneyRange(nCredit))
- throw std::runtime_error("CTransaction::GetCredit() : value out of range");
- }
- return nCredit;
- }
-
- int64 GetChange() const
- {
- if (IsCoinBase())
- return 0;
- int64 nChange = 0;
- BOOST_FOREACH(const CTxOut& txout, vout)
- {
- nChange += txout.GetChange();
- if (!MoneyRange(nChange))
- throw std::runtime_error("CTransaction::GetChange() : value out of range");
- }
- return nChange;
- }
-
int64 GetValueOut() const
{
int64 nValueOut = 0;
return dPriority > COIN * 144 / 250;
}
- int64 GetMinFee(unsigned int nBlockSize=1, bool fAllowFree=true, bool fForRelay=false) const
+ int64 GetMinFee(unsigned int nBlockSize=1, bool fAllowFree=false, bool fForRelay=false) const
{
// Base fee is either MIN_TX_FEE or MIN_RELAY_TX_FEE
int64 nBaseFee = fForRelay ? MIN_RELAY_TX_FEE : MIN_TX_FEE;
friend bool operator==(const CTransaction& a, const CTransaction& b)
{
return (a.nVersion == b.nVersion &&
+ a.nTime == b.nTime &&
a.vin == b.vin &&
a.vout == b.vout &&
a.nLockTime == b.nLockTime);
std::string ToString() const
{
std::string str;
- str += strprintf("CTransaction(hash=%s, ver=%d, vin.size=%d, vout.size=%d, nLockTime=%d)\n",
+ str += IsCoinBase()? "Coinbase" : (IsCoinStake()? "Coinstake" : "CTransaction");
+ str += strprintf("(hash=%s, nTime=%d, ver=%d, vin.size=%d, vout.size=%d, nLockTime=%d)\n",
GetHash().ToString().substr(0,10).c_str(),
+ nTime,
nVersion,
vin.size(),
vout.size(),
bool AddToMemoryPoolUnchecked();
public:
bool RemoveFromMemoryPool();
+ bool GetCoinAge(CTxDB& txdb, uint64& nCoinAge) const; // ppcoin: get transaction coin age
+ bool CheckProofOfStake(unsigned int nBits) const;
};
// network and disk
std::vector<CTransaction> vtx;
+ // ppcoin: block signature - signed by coin base txout[0]'s owner
+ std::vector<unsigned char> vchBlockSig;
+
// memory only
mutable std::vector<uint256> vMerkleTree;
+ // Denial-of-service detection:
+ mutable int nDoS;
+ bool DoS(int nDoSIn, bool fIn) const { nDoS += nDoSIn; return fIn; }
CBlock()
{
READWRITE(nBits);
READWRITE(nNonce);
- // ConnectBlock depends on vtx being last so it can calculate offset
+ // ConnectBlock depends on vtx following header to generate CDiskTxPos
if (!(nType & (SER_GETHASH|SER_BLOCKHEADERONLY)))
+ {
READWRITE(vtx);
+ READWRITE(vchBlockSig);
+ }
else if (fRead)
+ {
const_cast<CBlock*>(this)->vtx.clear();
+ const_cast<CBlock*>(this)->vchBlockSig.clear();
+ }
)
void SetNull()
nBits = 0;
nNonce = 0;
vtx.clear();
+ vchBlockSig.clear();
vMerkleTree.clear();
+ nDoS = 0;
}
bool IsNull() const
return (int64)nTime;
}
+ // ppcoin: two types of block: proof-of-work or proof-of-stake
+ bool IsProofOfStake() const
+ {
+ return (vtx.size() > 1 && vtx[1].IsCoinStake());
+ }
+
+ bool IsProofOfWork() const
+ {
+ return !IsProofOfStake();
+ }
+
+ std::pair<COutPoint, unsigned int> GetProofOfStake() const
+ {
+ return IsProofOfStake()? std::make_pair(vtx[1].vin[0].prevout, vtx[1].nTime) : std::make_pair(COutPoint(), (unsigned int)0);
+ }
+
+ // ppcoin: get max transaction timestamp
+ int64 GetMaxTransactionTime() const
+ {
+ int64 maxTransactionTime = 0;
+ BOOST_FOREACH(const CTransaction& tx, vtx)
+ maxTransactionTime = std::max(maxTransactionTime, (int64)tx.nTime);
+ return maxTransactionTime;
+ }
+
int GetSigOpCount() const
{
int n = 0;
fflush(fileout);
if (!IsInitialBlockDownload() || (nBestHeight+1) % 500 == 0)
{
-#ifdef __WXMSW__
+#ifdef WIN32
_commit(_fileno(fileout));
#else
fsync(fileno(fileout));
filein >> *this;
// Check the header
- if (!CheckProofOfWork(GetHash(), nBits))
+ if (fReadTransactions && IsProofOfWork() && !CheckProofOfWork(GetHash(), nBits))
return error("CBlock::ReadFromDisk() : errors in block header");
return true;
void print() const
{
- printf("CBlock(hash=%s, ver=%d, hashPrevBlock=%s, hashMerkleRoot=%s, nTime=%u, nBits=%08x, nNonce=%u, vtx=%d)\n",
+ printf("CBlock(hash=%s, ver=%d, hashPrevBlock=%s, hashMerkleRoot=%s, nTime=%u, nBits=%08x, nNonce=%u, vtx=%d, vchBlockSig=%s)\n",
GetHash().ToString().substr(0,20).c_str(),
nVersion,
hashPrevBlock.ToString().substr(0,20).c_str(),
hashMerkleRoot.ToString().substr(0,10).c_str(),
nTime, nBits, nNonce,
- vtx.size());
+ vtx.size(),
+ HexStr(vchBlockSig.begin(), vchBlockSig.end()).c_str());
for (int i = 0; i < vtx.size(); i++)
{
printf(" ");
}
+ bool SignBlock(const CKeyStore& keystore)
+ {
+ std::vector<std::pair<opcodetype, valtype> > vSolution;
+ const CTxOut& txout = IsProofOfStake()? vtx[1].vout[1] : vtx[0].vout[0];
+
+ if (!Solver(txout.scriptPubKey, vSolution))
+ return false;
+ BOOST_FOREACH(PAIRTYPE(opcodetype, valtype)& item, vSolution)
+ {
+ if (item.first == OP_PUBKEY)
+ {
+ // Sign
+ const valtype& vchPubKey = item.second;
+ CKey key;
+ if (!keystore.GetKey(Hash160(vchPubKey), key))
+ return false;
+ if (key.GetPubKey() != vchPubKey)
+ return false;
+ return key.Sign(GetHash(), vchBlockSig);
+ }
+ }
+ return false;
+ }
+
+ bool CheckBlockSignature() const
+ {
+ if (GetHash() == hashGenesisBlock)
+ return vchBlockSig.empty();
+
+ std::vector<std::pair<opcodetype, valtype> > vSolution;
+ const CTxOut& txout = IsProofOfStake()? vtx[1].vout[1] : vtx[0].vout[0];
+
+ if (!Solver(txout.scriptPubKey, vSolution))
+ return false;
+ BOOST_FOREACH(PAIRTYPE(opcodetype, valtype)& item, vSolution)
+ {
+ if (item.first == OP_PUBKEY)
+ {
+ const valtype& vchPubKey = item.second;
+ CKey key;
+ if (!key.SetPubKey(vchPubKey))
+ return false;
+ if (vchBlockSig.empty())
+ return false;
+ return key.Verify(GetHash(), vchBlockSig);
+ }
+ }
+ return false;
+ }
+
bool DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex);
bool ConnectBlock(CTxDB& txdb, CBlockIndex* pindex);
bool ReadFromDisk(const CBlockIndex* pindex, bool fReadTransactions=true);
bool AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos);
bool CheckBlock() const;
bool AcceptBlock();
+ bool GetCoinAge(uint64& nCoinAge) const; // ppcoin: calculate total coin age spent in block
};
CBlockIndex* pnext;
unsigned int nFile;
unsigned int nBlockPos;
+ uint64 nChainTrust;// ppcoin: trust score of chain, in the unit of coin-days
int nHeight;
- CBigNum bnChainWork;
+ bool fProofOfStake; // ppcoin: is the block of proof-of-stake type
+ COutPoint prevoutStake;
+ unsigned int nStakeTime;
// block header
int nVersion;
nFile = 0;
nBlockPos = 0;
nHeight = 0;
- bnChainWork = 0;
+ nChainTrust = 0;
+ fProofOfStake = true;
+ prevoutStake.SetNull();
+ nStakeTime = 0;
nVersion = 0;
hashMerkleRoot = 0;
nFile = nFileIn;
nBlockPos = nBlockPosIn;
nHeight = 0;
- bnChainWork = 0;
+ nChainTrust = 0;
+ fProofOfStake = block.IsProofOfStake();
+ if (fProofOfStake)
+ {
+ prevoutStake = block.vtx[1].vin[0].prevout;
+ nStakeTime = block.vtx[1].nTime;
+ }
+ else
+ {
+ prevoutStake.SetNull();
+ nStakeTime = 0;
+ }
nVersion = block.nVersion;
hashMerkleRoot = block.hashMerkleRoot;
return (int64)nTime;
}
- CBigNum GetBlockWork() const
+ int64 GetBlockTrust() const
{
- CBigNum bnTarget;
- bnTarget.SetCompact(nBits);
- if (bnTarget <= 0)
- return 0;
- return (CBigNum(1)<<256) / (bnTarget+1);
+ return (nChainTrust - (pprev? pprev->nChainTrust : 0));
}
bool IsInMainChain() const
bool CheckIndex() const
{
- return CheckProofOfWork(GetBlockHash(), nBits);
+ return IsProofOfWork() ? CheckProofOfWork(GetBlockHash(), nBits) : true;
}
bool EraseBlockFromDisk()
return pindex->GetMedianTimePast();
}
+ bool IsProofOfWork() const
+ {
+ return !fProofOfStake;
+ }
+ bool IsProofOfStake() const
+ {
+ return fProofOfStake;
+ }
std::string ToString() const
{
- return strprintf("CBlockIndex(nprev=%08x, pnext=%08x, nFile=%d, nBlockPos=%-6d nHeight=%d, merkle=%s, hashBlock=%s)",
- pprev, pnext, nFile, nBlockPos, nHeight,
+ return strprintf("CBlockIndex(nprev=%08x, pnext=%08x, nFile=%d, nBlockPos=%-6d nChainTrust=%"PRI64d" nHeight=%d, fProofOfStake=%d prevoutStake=(%s), nStakeTime=%d merkle=%s, hashBlock=%s)",
+ pprev, pnext, nFile, nBlockPos, nChainTrust, nHeight,
+ fProofOfStake, prevoutStake.ToString().c_str(), nStakeTime,
hashMerkleRoot.ToString().substr(0,10).c_str(),
GetBlockHash().ToString().substr(0,20).c_str());
}
READWRITE(hashNext);
READWRITE(nFile);
READWRITE(nBlockPos);
+ READWRITE(nChainTrust);
READWRITE(nHeight);
+ READWRITE(fProofOfStake);
+ if (fProofOfStake)
+ {
+ READWRITE(prevoutStake);
+ READWRITE(nStakeTime);
+ }
+ else if (fRead)
+ {
+ const_cast<CDiskBlockIndex*>(this)->prevoutStake.SetNull();
+ const_cast<CDiskBlockIndex*>(this)->nStakeTime = 0;
+ }
// block header
READWRITE(this->nVersion);
bool CheckSignature()
{
CKey key;
- if (!key.SetPubKey(ParseHex("04fc9702847840aaf195de8442ebecedf5b095cdbb9bc716bda9110971b28a49e0ead8564ff0db22209e0374782c093bb899692d524e9d6a6956e7c5ecbcd68284")))
+ if (!key.SetPubKey(ParseHex("0487ca85b6ae9d311f996c7616d20d0c88a5b4f07d25e78f419019f35cce6522acf978b2d99f0e7a58db1f120439e5c1889266927854aa57c93956c2569188a539")))
return error("CAlert::CheckSignature() : SetPubKey failed");
if (!key.Verify(Hash(vchMsg.begin(), vchMsg.end()), vchSig))
return error("CAlert::CheckSignature() : verify signature failed");
bool ProcessAlert();
};
-
-
-
-
-
-
-
-
-
-extern std::map<uint256, CTransaction> mapTransactions;
-extern std::map<std::vector<unsigned char>, CPrivKey> mapKeys;
-extern std::map<uint160, std::vector<unsigned char> > mapPubKeys;
-extern CCriticalSection cs_mapKeys;
-
#endif
git://git.novaco.in / novacoin.git / blobdiff