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main.h
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main.h
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// Copyright (c) 2009-2010 Satoshi Nakamoto
// 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
#define BITCOIN_MAIN_H
#include "bignum.h"
#include "net.h"
#include "key.h"
#include "script.h"
#include "walletdb.h"
#include "scrypt.h"
#include <list>
#include <boost/shared_ptr.hpp>
#ifdef __WXMSW__
#include <io.h> /* for _commit */
#elif !defined(MAC_OSX)
#include <sys/prctl.h>
#endif
class CBlock;
class CBlockIndex;
class CWalletTx;
class CWallet;
class CKeyItem;
class CReserveKey;
class CWalletDB;
class CMessageHeader;
class CAddress;
class CInv;
class CRequestTracker;
class CNode;
class CBlockIndex;
class CHooks;
class CAuxPow;
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 = 500000;
static const int64 MIN_RELAY_TX_FEE = 10000;
static const int64 MAX_MONEY = 21000000 * COIN;
inline bool MoneyRange(int64 nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
static const int COINBASE_MATURITY = 100;
static const int COINBASE_MATURITY_DISPLAY = COINBASE_MATURITY + 20;
static const int GAME_REWARD_MATURITY = 100;
static const int GAME_REWARD_MATURITY_DISPLAY = GAME_REWARD_MATURITY + 20;
#ifdef USE_UPNP
static const int fHaveUPnP = true;
#else
static const int fHaveUPnP = false;
#endif
static const int NAMECOIN_TX_VERSION = 0x7100;
static const int GAME_TX_VERSION = 0x87100;
enum { ALGO_SHA256D = 0, ALGO_SCRYPT = 1, NUM_ALGOS };
extern int miningAlgo;
extern CCriticalSection cs_main;
extern CCriticalSection cs_AppendBlockFile;
extern std::map<uint256, CBlockIndex*> mapBlockIndex;
extern uint256 hashGenesisBlock;
extern CBigNum bnProofOfWorkLimit[NUM_ALGOS], bnInitialHashTarget[NUM_ALGOS];
extern CBlockIndex* pindexGenesisBlock;
extern int nBestHeight;
extern CBigNum bnBestChainWork;
extern CBigNum bnBestInvalidWork;
extern uint256 hashBestChain;
extern CBlockIndex* pindexBest;
extern unsigned int nTransactionsUpdated;
extern double dHashesPerSec;
extern const std::string strMessageMagic;
extern int64 nHPSTimerStart;
extern int64 nTimeBestReceived;
extern CCriticalSection cs_setpwalletRegistered;
extern std::set<CWallet*> setpwalletRegistered;
// Settings
extern int fGenerateBitcoins, fGenerationAlgo;
extern int64 nTransactionFee;
extern int64 nMinimumInputValue;
extern int fLimitProcessors;
extern int nLimitProcessors;
extern int fMinimizeToTray;
extern int fMinimizeOnClose;
extern int fUseUPnP;
extern CHooks* hooks;
class CReserveKey;
class CTxDB;
class CTxIndex;
void RegisterWallet(CWallet* pwalletIn);
void UnregisterWallet(CWallet* pwalletIn);
/** Push an updated transaction to all registered wallets */
void SyncWithWallets(const CTransaction& tx, const CBlock* pblock = NULL, bool fUpdate = false);
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 (DatabaseSet& dbset, unsigned int& nFileRet,
unsigned size);
void FlushBlockFile(FILE *f);
bool LoadBlockIndex(bool fAllowNew=true);
void PrintBlockTree();
CBlockIndex* FindBlockByHeight(int nHeight);
bool ProcessMessages(CNode* pfrom);
bool SendMessages(CNode* pto, bool fSendTrickle);
void GenerateBitcoins(bool fGenerate, CWallet* pwallet);
CBlock* CreateNewBlock(CReserveKey& reservekey, int algo);
int64 GetBlockValue(int nHeight, int64 nFees);
CBlock* CreateNewBlock(CReserveKey& reservekey);
void IncrementExtraNonce(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce, int64& nPrevTime);
void IncrementExtraNonceWithAux(CBlock* pblock, CBlockIndex* pindexPrev, unsigned int& nExtraNonce, int64& nPrevTime, std::vector<unsigned char>& vchAux);
void FormatHashBuffers(CBlock* pblock, char* pmidstate, char* pdata, char* phash1);
const CBlockIndex* GetLastBlockIndexForAlgo(const CBlockIndex* pindex, int algo);
bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey);
bool CheckProofOfWork(uint256 hash, unsigned int nBits, int algo);
int GetTotalBlocksEstimate();
int GetNumBlocksOfPeers();
bool IsInitialBlockDownload();
std::string GetWarnings(std::string strFor);
/** Retrieve a transaction (from memory pool, or from disk, if possible) */
bool GetTransaction(const uint256 &hash, CTransaction &txOut, uint256 &hashBlock /*, bool fAllowSlow = false*/ );
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
{
public:
unsigned int nBlockFile;
unsigned int nBlockPos;
unsigned int nTxFile; // Game transactions are stored outside of blocks, so the file may be different
unsigned int nTxPos;
CDiskTxPos()
{
SetNull();
}
CDiskTxPos(unsigned int nFileIn, unsigned int nBlockPosIn, unsigned int nTxPosIn)
{
nBlockFile = nTxFile = nFileIn;
nBlockPos = nBlockPosIn;
nTxPos = nTxPosIn;
}
CDiskTxPos(unsigned int nBlockFileIn, unsigned int nBlockPosIn, unsigned int nTxFileIn, unsigned int nTxPosIn)
{
nBlockFile = nBlockFileIn;
nBlockPos = nBlockPosIn;
nTxFile = nTxFileIn;
nTxPos = nTxPosIn;
}
IMPLEMENT_SERIALIZE( READWRITE(FLATDATA(*this)); )
void SetNull() { nBlockFile = nTxFile = -1; nBlockPos = 0; nTxPos = 0; }
bool IsNull() const { return (nBlockFile == -1); }
friend bool operator==(const CDiskTxPos& a, const CDiskTxPos& b)
{
return (a.nBlockFile == b.nBlockFile &&
a.nBlockPos == b.nBlockPos &&
a.nTxFile == b.nTxFile &&
a.nTxPos == b.nTxPos);
}
friend bool operator!=(const CDiskTxPos& a, const CDiskTxPos& b)
{
return !(a == b);
}
std::string ToString() const
{
if (IsNull())
return "null";
else
return strprintf("(nBlockFile=%d, nBlockPos=%d, nTxFile=%d, nTxPos=%d)", nBlockFile, nBlockPos, nTxFile, nTxPos);
}
void print() const
{
printf("%s", ToString().c_str());
}
};
class CNameIndex
{
public:
CDiskTxPos txPos;
unsigned int nHeight;
std::vector<unsigned char> vValue;
CNameIndex()
{
}
CNameIndex(CDiskTxPos txPosIn, unsigned int nHeightIn, std::vector<unsigned char> vValueIn)
{
txPos = txPosIn;
nHeight = nHeightIn;
vValue = vValueIn;
}
IMPLEMENT_SERIALIZE
(
READWRITE(txPos);
READWRITE(nHeight);
READWRITE(vValue);
)
};
class CInPoint
{
public:
CTransaction* ptx;
unsigned int n;
CInPoint() { SetNull(); }
CInPoint(CTransaction* ptxIn, unsigned int nIn) { ptx = ptxIn; n = nIn; }
void SetNull() { ptx = NULL; n = -1; }
bool IsNull() const { return (ptx == NULL && n == -1); }
};
class COutPoint
{
public:
uint256 hash;
unsigned int n;
COutPoint() { SetNull(); }
COutPoint(uint256 hashIn, unsigned int nIn) { hash = hashIn; n = nIn; }
IMPLEMENT_SERIALIZE( READWRITE(FLATDATA(*this)); )
void SetNull() { hash = 0; n = -1; }
bool IsNull() const { return (hash == 0 && n == -1); }
friend bool operator<(const COutPoint& a, const COutPoint& b)
{
return (a.hash < b.hash || (a.hash == b.hash && a.n < b.n));
}
friend bool operator==(const COutPoint& a, const COutPoint& b)
{
return (a.hash == b.hash && a.n == b.n);
}
friend bool operator!=(const COutPoint& a, const COutPoint& b)
{
return !(a == b);
}
std::string ToString() const
{
return strprintf("COutPoint(%s, %d)", hash.ToString().substr(0,10).c_str(), n);
}
void print() const
{
printf("%s\n", ToString().c_str());
}
};
//
// An input of a transaction. It contains the location of the previous
// transaction's output that it claims and a signature that matches the
// output's public key.
//
class CTxIn
{
public:
COutPoint prevout;
CScript scriptSig;
unsigned int nSequence;
CTxIn()
{
nSequence = UINT_MAX;
}
explicit CTxIn(COutPoint prevoutIn, CScript scriptSigIn=CScript(), unsigned int nSequenceIn=UINT_MAX)
{
prevout = prevoutIn;
scriptSig = scriptSigIn;
nSequence = nSequenceIn;
}
CTxIn(uint256 hashPrevTx, unsigned int nOut, CScript scriptSigIn=CScript(), unsigned int nSequenceIn=UINT_MAX)
{
prevout = COutPoint(hashPrevTx, nOut);
scriptSig = scriptSigIn;
nSequence = nSequenceIn;
}
IMPLEMENT_SERIALIZE
(
READWRITE(prevout);
READWRITE(scriptSig);
READWRITE(nSequence);
)
bool IsFinal() const
{
return (nSequence == UINT_MAX);
}
friend bool operator==(const CTxIn& a, const CTxIn& b)
{
return (a.prevout == b.prevout &&
a.scriptSig == b.scriptSig &&
a.nSequence == b.nSequence);
}
friend bool operator!=(const CTxIn& a, const CTxIn& b)
{
return !(a == b);
}
std::string ToString() const
{
std::string str;
str += "CTxIn(";
str += prevout.ToString();
if (prevout.IsNull())
str += strprintf(", coinbase %s", HexStr(scriptSig).c_str());
else
str += strprintf(", scriptSig=%s", scriptSig.ToString().substr(0,24).c_str());
if (nSequence != UINT_MAX)
str += strprintf(", nSequence=%u", nSequence);
str += ")";
return str;
}
void print() const
{
printf("%s\n", ToString().c_str());
}
};
//
// An output of a transaction. It contains the public key that the next input
// must be able to sign with to claim it.
//
class CTxOut
{
public:
int64 nValue;
CScript scriptPubKey;
CTxOut()
{
SetNull();
}
inline CTxOut (int64 nValueIn, const CScript& scriptPubKeyIn)
: nValue(nValueIn), scriptPubKey (scriptPubKeyIn)
{}
IMPLEMENT_SERIALIZE
(
READWRITE(nValue);
READWRITE(scriptPubKey);
)
void SetNull()
{
nValue = -1;
scriptPubKey.clear();
}
bool IsNull()
{
return (nValue == -1);
}
uint256 GetHash() const
{
return SerializeHash(*this);
}
friend bool operator==(const CTxOut& a, const CTxOut& b)
{
return (a.nValue == b.nValue &&
a.scriptPubKey == b.scriptPubKey);
}
friend bool operator!=(const CTxOut& a, const CTxOut& b)
{
return !(a == b);
}
std::string ToString() const
{
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());
}
void print() const
{
printf("%s\n", ToString().c_str());
}
};
/**
* An entry in the UTXO set. This is basically a CTxOut, but it also
* contains other information that is needed in ConnectInputs
* for checking validity of spending the output.
*/
class CUtxoEntry : public CTxOut
{
public:
CTxOut txo;
int height;
bool isCoinbase;
bool isGameTx;
public:
inline CUtxoEntry ()
: CTxOut()
{}
CUtxoEntry (const CTransaction& tx, unsigned n, int h);
IMPLEMENT_SERIALIZE
(
READWRITE (txo);
READWRITE (height);
READWRITE (isCoinbase);
READWRITE (isGameTx);
)
friend inline bool
operator== (const CUtxoEntry& a, const CUtxoEntry& b)
{
return (a.txo == b.txo && a.height == b.height
&& a.isCoinbase == b.isCoinbase && a.isGameTx == b.isGameTx);
}
friend inline bool
operator!= (const CUtxoEntry& a, const CUtxoEntry& b)
{
return !(a == b);
}
};
typedef std::map<uint256, std::pair<CTxIndex, CTransaction> > MapPrevTx;
//
// The basic transaction that is broadcasted on the network and contained in
// blocks. A transaction can contain multiple inputs and outputs.
//
class CTransaction
{
public:
int nVersion;
std::vector<CTxIn> vin;
std::vector<CTxOut> vout;
unsigned int nLockTime;
CTransaction()
{
SetNull();
}
IMPLEMENT_SERIALIZE
(
READWRITE(this->nVersion);
nVersion = this->nVersion;
READWRITE(vin);
READWRITE(vout);
READWRITE(nLockTime);
)
void SetNull()
{
nVersion = 1;
vin.clear();
vout.clear();
nLockTime = 0;
}
bool IsNull() const
{
return (vin.empty() && vout.empty());
}
uint256 GetHash() const
{
return SerializeHash(*this);
}
inline const char*
GetHashForLog () const
{
return GetHash ().ToLogString ();
}
bool IsFinal(int nBlockHeight=0, int64 nBlockTime=0) const
{
// Time based nLockTime implemented in 0.1.6
if (nLockTime == 0)
return true;
if (nBlockHeight == 0)
nBlockHeight = nBestHeight;
if (nBlockTime == 0)
nBlockTime = GetAdjustedTime();
if ((int64)nLockTime < (nLockTime < 500000000 ? (int64)nBlockHeight : nBlockTime))
return true;
BOOST_FOREACH(const CTxIn& txin, vin)
if (!txin.IsFinal())
return false;
return true;
}
bool IsNewerThan(const CTransaction& old) const
{
if (vin.size() != old.vin.size())
return false;
for (int i = 0; i < vin.size(); i++)
if (vin[i].prevout != old.vin[i].prevout)
return false;
bool fNewer = false;
unsigned int nLowest = UINT_MAX;
for (int i = 0; i < vin.size(); i++)
{
if (vin[i].nSequence != old.vin[i].nSequence)
{
if (vin[i].nSequence <= nLowest)
{
fNewer = false;
nLowest = vin[i].nSequence;
}
if (old.vin[i].nSequence < nLowest)
{
fNewer = true;
nLowest = old.vin[i].nSequence;
}
}
}
return fNewer;
}
bool IsCoinBase() const
{
return !IsGameTx() && vin.size() == 1 && vin[0].prevout.IsNull();
}
bool IsGameTx() const
{
return nVersion == GAME_TX_VERSION;
}
void SetGameTx()
{
nVersion = GAME_TX_VERSION;
}
int GetSigOpCount() const
{
int n = 0;
BOOST_FOREACH(const CTxIn& txin, vin)
n += txin.scriptSig.GetSigOpCount();
BOOST_FOREACH(const CTxOut& txout, vout)
n += txout.scriptPubKey.GetSigOpCount();
return n;
}
bool IsStandard() const
{
BOOST_FOREACH(const CTxIn& txin, vin)
if (!txin.scriptSig.IsPushOnly())
return error("nonstandard txin: %s", txin.scriptSig.ToString().c_str());
BOOST_FOREACH(const CTxOut& txout, vout)
if (!::IsStandard(txout.scriptPubKey))
return error("nonstandard txout: %s", txout.scriptPubKey.ToString().c_str());
return true;
}
int64 GetValueOut() const
{
int64 nValueOut = 0;
BOOST_FOREACH(const CTxOut& txout, vout)
{
nValueOut += txout.nValue;
if (!MoneyRange(txout.nValue) || !MoneyRange(nValueOut))
throw std::runtime_error("CTransaction::GetValueOut() : value out of range");
}
return nValueOut;
}
static bool AllowFree(double dPriority)
{
// Large (in bytes) low-priority (new, small-coin) transactions
// need a fee.
return dPriority > COIN * 144 / 250;
}
int64 GetMinFee(unsigned int nBlockSize=1, bool fAllowFree=true, bool fForRelay=false) const;
bool ReadFromDisk(CDiskTxPos pos)
{
CAutoFile filein = OpenBlockFile(pos.nTxFile, 0, "rb");
if (!filein)
return error("CTransaction::ReadFromDisk() : OpenBlockFile failed");
// Read transaction
if (fseek(filein, pos.nTxPos, SEEK_SET) != 0)
return error("CTransaction::ReadFromDisk() : fseek failed");
filein >> *this;
return true;
}
friend bool operator==(const CTransaction& a, const CTransaction& b)
{
return (a.nVersion == b.nVersion &&
a.vin == b.vin &&
a.vout == b.vout &&
a.nLockTime == b.nLockTime);
}
friend bool operator!=(const CTransaction& a, const CTransaction& b)
{
return !(a == b);
}
std::string ToString() const
{
std::string str;
str += strprintf("CTransaction(hash=%s, ver=%d, vin.size=%d, vout.size=%d, nLockTime=%d)\n",
GetHash().ToString().substr(0,10).c_str(),
nVersion,
vin.size(),
vout.size(),
nLockTime);
for (int i = 0; i < vin.size(); i++)
str += " " + vin[i].ToString() + "\n";
for (int i = 0; i < vout.size(); i++)
str += " " + vout[i].ToString() + "\n";
return str;
}
void print() const
{
printf("%s", ToString().c_str());
}
bool ReadFromDisk(CTxDB& txdb, COutPoint prevout, CTxIndex& txindexRet);
bool ReadFromDisk(CTxDB& txdb, COutPoint prevout);
bool ReadFromDisk(COutPoint prevout);
bool DisconnectInputs (DatabaseSet& dbset, CBlockIndex* pindex);
/** Fetch from memory and/or disk. inputsRet keys are transaction hashes.
@param[in] txdb Transaction database
@param[in] mapTestPool List of pending changes to the transaction index database
@param[in] fBlock True if being called to add a new best-block to the chain
@param[in] fMiner True if being called by CreateNewBlock
@param[out] inputsRet Pointers to this transaction's inputs
@param[out] fInvalid returns true if transaction is invalid
@return Returns true if all inputs are in txdb or mapTestPool
*/
bool FetchInputs(CTxDB& txdb, const std::map<uint256, CTxIndex>& mapTestPool,
bool fBlock, bool fMiner, MapPrevTx& inputsRet, bool& fInvalid);
bool ConnectInputs(DatabaseSet& dbset,
std::map<uint256, CTxIndex>& mapTestPool,
CDiskTxPos posThisTx, CBlockIndex* pindexBlock,
int64& nFees, bool fBlock, bool fMiner, int64 nMinFee=0);
bool ClientConnectInputs();
bool CheckTransaction() const;
bool AcceptToMemoryPool(DatabaseSet& dbset, bool fCheckInputs=true,
bool fLimitFree=true, bool* pfMissingInputs=NULL);
bool AcceptToMemoryPool(bool fCheckInputs=true, bool fLimitFree=true, bool* pfMissingInputs=NULL);
protected:
bool AddToMemoryPoolUnchecked();
public:
bool RemoveFromMemoryPool();
};
//
// A transaction with a merkle branch linking it to the block chain
//
class CMerkleTx : public CTransaction
{
public:
uint256 hashBlock;
std::vector<uint256> vMerkleBranch;
int nIndex;
// memory only
mutable bool fMerkleVerified;
CMerkleTx()
{
Init();
}
CMerkleTx(const CTransaction& txIn) : CTransaction(txIn)
{
Init();
}
void Init()
{
hashBlock = 0;
nIndex = -1;
fMerkleVerified = false;
}
IMPLEMENT_SERIALIZE
(
nSerSize += SerReadWrite(s, *(CTransaction*)this, nType, nVersion, ser_action);
nVersion = this->nVersion;
READWRITE(hashBlock);
READWRITE(vMerkleBranch);
READWRITE(nIndex);
)
int SetMerkleBranch(const CBlock* pblock=NULL);
int GetDepthInMainChain(int& nHeightRet) const;
int GetDepthInMainChain() const { int nHeight; return GetDepthInMainChain(nHeight); }
bool IsInMainChain() const { return GetDepthInMainChain() > 0; }
int GetBlocksToMaturity() const;
inline int
GetHeightInMainChain() const
{
int nHeight;
if (GetDepthInMainChain (nHeight) == 0)
return -1;
return nHeight;
}
bool AcceptToMemoryPool (DatabaseSet& dbset, bool fCheckInputs = true);
bool AcceptToMemoryPool();
};
//
// A txdb record that contains the disk location of a transaction and an array
// of flags whether its outputs have already been spent.
//
class CTxIndex
{
public:
CDiskTxPos pos;
/* Possible types of "spendings" for outputs. It is necessary to record
when a name has been spent by a game tx, so that we know that the
player is dead. */
static const unsigned char SPENT_UNSPENT = 0;
static const unsigned char SPENT_TX = 1;
static const unsigned char SPENT_NAMETX = 2;
static const unsigned char SPENT_GAMETX = 3;
static const unsigned char SPENT_UNKNOWN = 128;
private:
std::vector<unsigned char> isSpent;
/* Given the spending tx of an output, decide what the correct SPENT_*
type is for the output. */
static unsigned char GetSpentType (const CTransaction& tx);
public:
CTxIndex()
{
SetNull();
}
CTxIndex(const CDiskTxPos& posIn, unsigned int nOutputs)
{
pos = posIn;
isSpent.resize (nOutputs, SPENT_UNSPENT);
}
IMPLEMENT_SERIALIZE
(
assert (nType == SER_DISK);
if (nVersion < 1001000)
{
assert (fRead);
int nVersionDummy;
READWRITE(nVersionDummy);
assert (nVersionDummy < 1001000);
}
READWRITE(pos);
if (nVersion < 1001000)
{
assert (fRead);
std::vector<CDiskTxPos> vSpent;
READWRITE (vSpent);
std::vector<unsigned char>& newIsSpent = const_cast<std::vector<unsigned char>&> (isSpent);
newIsSpent.resize (vSpent.size ());
for (unsigned i = 0; i < vSpent.size (); ++i)
{
if (vSpent[i].IsNull ())
newIsSpent[i] = SPENT_UNSPENT;
else
{
/* Set value to SPENT_UNKNOWN for now. This should only
ever be used during database upgrading, and there
the correct spending type is set later while
iterating through all possible spending tx. */
newIsSpent[i] = SPENT_UNKNOWN;
}
}
}
else
READWRITE(isSpent);
)
void SetNull()
{
pos.SetNull();
isSpent.clear ();
}
bool IsNull()
{
return pos.IsNull();
}
inline unsigned
GetOutputCount () const
{
return isSpent.size ();
}
inline void
ResizeOutputs (unsigned n)
{
isSpent.resize (n, SPENT_UNSPENT);
}
inline bool
IsSpent (unsigned n) const
{
assert (n < isSpent.size ());
return (isSpent[n] != SPENT_UNSPENT);
}
inline unsigned char
GetSpent (unsigned n) const
{
assert (n < isSpent.size ());
return isSpent[n];
}
inline void
SetSpent (unsigned n, const CTransaction& txSpending)
{
assert (n < isSpent.size ());
/* Allow also SPENT_UNKNOWN to be "reset" so that the correct type
can be set during the upgrade procedure. */
assert (isSpent[n] == SPENT_UNSPENT || isSpent[n] == SPENT_UNKNOWN);
isSpent[n] = GetSpentType (txSpending);
}
inline void
SetUnspent (unsigned n)
{
assert (n < isSpent.size ());
assert (isSpent[n] != SPENT_UNSPENT);
isSpent[n] = SPENT_UNSPENT;
}
friend bool operator==(const CTxIndex& a, const CTxIndex& b)
{
return (a.pos == b.pos &&
a.isSpent == b.isSpent);
}
friend bool operator!=(const CTxIndex& a, const CTxIndex& b)
{
return !(a == b);
}
const CBlockIndex* GetContainingBlock () const;
int GetHeight () const;
int GetDepthInMainChain () const;
};
template <typename Stream>
int ReadWriteAuxPow(Stream& s, const boost::shared_ptr<CAuxPow>& auxpow, int nType, int nVersion, CSerActionSerialize ser_action);
template <typename Stream>
int ReadWriteAuxPow(Stream& s, boost::shared_ptr<CAuxPow>& auxpow, int nType, int nVersion, CSerActionUnserialize ser_action);
template <typename Stream>
int ReadWriteAuxPow(Stream& s, const boost::shared_ptr<CAuxPow>& auxpow, int nType, int nVersion, CSerActionGetSerializeSize ser_action);
enum
{
// primary version
BLOCK_VERSION_DEFAULT = (1 << 0),
// modifiers
BLOCK_VERSION_AUXPOW = (1 << 8),
BLOCK_VERSION_SCRYPT = (1 << 9),
// bits allocated for chain ID
BLOCK_VERSION_CHAIN_START = (1 << 16),
BLOCK_VERSION_CHAIN_END = (1 << 30),
};
inline int GetAlgo(int nVersion)
{
return nVersion & BLOCK_VERSION_SCRYPT ? ALGO_SCRYPT : ALGO_SHA256D;
}
//
// Nodes collect new transactions into a block, hash them into a hash tree,
// and scan through nonce values to make the block's hash satisfy proof-of-work
// requirements. When they solve the proof-of-work, they broadcast the block
// to everyone and the block is added to the block chain. The first transaction
// in the block is a special one that creates a new coin owned by the creator
// of the block.
//
// Blocks are appended to blk0001.dat files on disk. Their location on disk
// is indexed by CBlockIndex objects in memory.
//
class CBlock
{
public:
// header
int nVersion;
uint256 hashPrevBlock;
uint256 hashMerkleRoot;
unsigned int nTime;