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main.h
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main.h
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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_MAIN_H
#define BITCOIN_MAIN_H
#include "bignum.h"
#include "sync.h"
#include "net.h"
#include "script.h"
#include "scrypt.h"
#include "hashblock.h"
#include <list>
class CWallet;
class CBlock;
class CBlockIndex;
class CKeyItem;
class CReserveKey;
class COutPoint;
class CAddress;
class CInv;
class CRequestTracker;
class CNode;
static const int LAST_POW_BLOCK = 160000; // at 30 second blocks will be about 30 days from launch
static const unsigned int MAX_BLOCK_SIZE = 1000000;
static const unsigned int MAX_BLOCK_SIZE_GEN = MAX_BLOCK_SIZE/2;
static const unsigned int MAX_BLOCK_SIGOPS = MAX_BLOCK_SIZE/50;
static const unsigned int MAX_ORPHAN_TRANSACTIONS = MAX_BLOCK_SIZE/100;
static const unsigned int MAX_TX_COMMENT_LEN = 528;
static const unsigned int MAX_INV_SZ = 50000;
static const int64_t MIN_TX_FEE = 10000;
static const int64_t MIN_RELAY_TX_FEE = MIN_TX_FEE;
static const int64_t MAX_MONEY = 60000000 * COIN;
static const int64_t COIN_YEAR_REWARD = 1 * CENT; // 1% per year
static const int64_t MAX_MINT_PROOF_OF_STAKE = 0.1 * COIN; // 10% annual interest
#define FOUNDATION "sZD2Tv6HpfT1q3aHKRUHopy1T6Ge8UYLtZ"
#define FOUNDATION_TEST "sZD2Tv6HpfT1q3aHKRUHopy1T6Ge8UYLtZ"
inline bool MoneyRange(int64_t nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
// Threshold for nLockTime: below this value it is interpreted as block number, otherwise as UNIX timestamp.
static const unsigned int LOCKTIME_THRESHOLD = 500000000; // Tue Nov 5 00:53:20 1985 UTC
#ifdef USE_UPNP
static const int fHaveUPnP = true;
#else
static const int fHaveUPnP = false;
#endif
static const uint256 hashGenesisBlock("00000729be7c186c90758ebeb55f9f947ee3f1d856b5d136d5796b4a5a704a59");
static const uint256 hashGenesisBlockTestNet("00000729be7c186c90758ebeb55f9f947ee3f1d856b5d136d5796b4a5a704a59");
static const uint256 CheckBlock1 ("0000003e263eae6f4176c5888962e60b9f9e7c3e1d945d40cc8f7d2454d1dff5"); // Checkpoint at block 1
static const uint256 CheckBlock2 ("0000008595b56dfc05b26d073ce9e86bf5b7c4e4eb0e1f97beecde38b759890a"); // Checkpoint at block 2
static const uint256 CheckBlock3 ("00000069ada990305c02b3807640126e93a88680fbe89201d673ebb4e26a22c7"); // Checkpoint at block 3
static const uint256 CheckBlock4 ("000000b2c8845f757395db92f1b347f73727edba630339c44b6cb8625f87cd9b"); // Checkpoint at block 4
static const uint256 CheckBlock5 ("0000000007054bf10c8fca005b92c253d3c31323c1273057194dd4b21c9ca9c6"); // Checkpoint at block 25000
static const uint256 CheckBlock6 ("000000000480b6932ccfa26fb4acee44943ab081730e98b55c29ae07377e94bb"); // Checkpoint at block 50000
static const uint256 CheckBlock7 ("0000000022dd29280a0e1d7aec75c8f9f86e28a54a551d2f210934c815873b81"); // Checkpoint at block 100000
static const uint256 CheckBlock8 ("3e004a1b0399ef61a29c84d7760a5c36446c971f5a3e4dfb802da1c216a3ac3a"); // Checkpoint at block 117985
static const uint256 CheckBlock9 ("7f735b89ca46c056a347fba6d8d4978c491d53de0e50f05020e980572b8b1c97"); // Checkpoint at block 135000
static const uint256 CheckBlock10 ("00000000167beb4925ba3eea445c6ee36f530ce9b320bc20ae421394ae8afefe"); // Checkpoint at block 141296
static const uint256 CheckBlock11 ("000001206c1b30d69ab8126e8aee557855ff0fc1f00b62f948180c2faaf32667"); // Checkpoint at block 141300
static const uint256 CheckBlock12 ("0000001ca34381fc5d3897cd338b0a91f8a10345d688e457a184088e6bc6a366"); // Checkpoint at block 141310
static const uint256 CheckBlock13 ("00000052473a7a0bf0073481dbbd81ea7b0c2faee6c5623a4907bd1fbc8331ba"); // Checkpoint at block 141320
static const uint256 CheckBlock14 ("0000000b3bbc6ff2baccfe8377a221df5815a94e2383755c4180fe71e9dbcea6"); // Checkpoint at block 141330
static const uint256 CheckBlock15 ("000000056e60e91f1d4c5c39b053c6099acd81e65f5d0a825c69ee07bc59c831"); // Checkpoint at block 141340
static const uint256 CheckBlock16 ("00000007c4afb4073bdd7f1fe3b80ef03703e35dbe7a0e5cdc0d428217a14835"); // Checkpoint at block 141350
static const uint256 CheckBlock17 ("0000001874306dc4ee34624e63ca5693bcd3f0817b6247bb2e0a71d5acaf30ae"); // Checkpoint at block 141351
static const uint256 CheckBlock18 ("000000008d1c60ce7a50ba153a5d3f91e436c6c8a75f20a1bbdbe91cedbc4d05"); // Checkpoint at block 141352
static const uint256 CheckBlock19 ("000000157f70ca2b7d888640c98ccb4e931f26d1e969af01a686f2bea1c1885b"); // Checkpoint at block 141353
static const uint256 CheckBlock20 ("0000000e345042b49353d387d7021c13b6a0d59f7674edf603e9933342fc1877"); // Checkpoint at block 141360
static const uint256 CheckBlock21 ("00000002423353dd38d0b21c1b513f50d88c794d450f58158ad6bf93083ad2b8"); // Checkpoint at block 141370
static const uint256 CheckBlock22 ("000000020670eb25cdfef7b3cd3ef80f7eeae8343adf56ea262a9e5e4c0a0b78"); // Checkpoint at block 141380
static const uint256 CheckBlock23 ("000000050a93b81bb6956e3a47f84243c34ac8a2d4063db7c98d60a39d0c4af4"); // Checkpoint at block 141390
static const uint256 CheckBlock24 ("000000026bdb8db7d635838f37c7d0694bdf381ee04aaec49bfa19e8105c288c"); // Checkpoint at block 141400
static const uint256 CheckBlock25 ("00000003a8491403dd8f9e50d61f708c94a4d247e052b896694e6100cc705387"); // Checkpoint at block 150000
static const uint256 CheckBlock26 ("ceabbb5036d3ad9186db38b04a2ff3b1cf2e2473bd72b848d5175c4645a87a76"); // Checkpoint at block 160000
static const uint256 CheckBlock27 ("26bc88c34d0f70ea1b68b75beffcb45ccb66285773c67f75988e9c15f06dd935"); // Checkpoint at block 170000
static const uint256 CheckBlock28 ("0af905fed32c81845ec518d75cd67f76f0f21237dd391fec3e07231c0b27b797"); // Checkpoint at block 180000
static const uint256 CheckBlock29 ("e0d9002d503ca284bed9ab9190758187f5826693b8c4ceb6045bde3b326f7407"); // Checkpoint at block 190000
static const uint256 CheckBlock30 ("99fa06ca9ae93f5ff40bc5240de62967a7888adefe907d2b229d09d05c9c5946"); // Checkpoint at block 200000
static const uint256 CheckBlock31 ("7ceddca8ed9dd7ad5f98870dcd6f2c9fcfa90ed1b684a58c042dd081b91487eb"); // Checkpoint at block 210000
static const uint256 CheckBlock32 ("42d8c73e295bc58f0d6457739f751c6fdb7b066fc27404eafbfd31c9d84943bd"); // Checkpoint at block 220000
static const uint256 CheckBlock33 ("4b3a964cb7daefed14cef75dcd1728fb5e45d121abe60a24fae241b4cc75fa57"); // Checkpoint at block 221000
static const uint256 CheckBlock34 ("75da191e75dd985446d4e0dc28211711ec055a38e8a9fb6491c83190b1bdfd1a"); // Checkpoint at block 222000
static const uint256 CheckBlock35 ("eb8c232317e6a2f76a8358bf917076c40b5f9a70fb3de34f1e2b17605d24b879"); // Checkpoint at block 224176
static const uint256 CheckBlock36 ("856573b88e592d4eb4eb75d690e80bd7ce179d9da1cf6a185495385bb57901c4"); // Checkpoint at block 419892
static const uint256 CheckBlock37 ("93ed73ab6dbe7410fb107c939f0380864f9a4891f36522bd1f0c7ee6f3565c40"); // Checkpoint at block 681958
static const uint256 CheckBlock38 ("8c8eee61e1141ef869cd6f7d18e1b84e4bc3c094593803f4b09ef19e0f5c5c7f"); // Checkpoint at block 1016236
static const uint256 CheckBlock39 ("1b82ec6247c70b7c416651be0f1a60b830e9754f43034135f65d52ed5dbf952b"); // Checkpoint at block 1263735
static const uint256 CheckBlock40 ("08fa78e56bd87318d1e40feea883ec83622d0aa774ad5e4d323d2b357e57a5c0"); // Checkpoint at block 1302017
static const uint256 CheckBlock41 ("e73a816389ef2ec97fb359f202648b0bc503d41999a9f7267c30ed39fe5c1255"); // Checkpoint at block 1314734
static const uint256 CheckBlock42 ("2edf5e65b2f45fabc378a8d5f08b9e984b4e775a5060aa3d11c41615dd174c32"); // Checkpoint at block 2220956
static const uint256 CheckBlock43 ("28fe0c8048a2464cac916d2a699f8f7ce3a7d0facfc1c0001cef83b6a2b4b52b"); // Checkpoint at block 2271723
static const uint256 CheckBlock44 ("e8f490bdf6675b7aafb57a49dfd8978b3ad580e615265259c0fb87c1c5c5f7fd"); // Checkpoint at block 2586565
inline int64_t PastDrift(int64_t nTime) { return nTime - (nBestHeight < 681958 ? 24*60*60 : 10 * 60) ; } // up to (24H or) 10 minutes from the past **em52
inline int64_t FutureDrift(int64_t nTime) { return nTime + (nBestHeight < 681958 ? 24*60*60 : 10 * 60) ; } // up to (24H or) 10 minutes from the future ** em52
extern int64_t devCoin;
extern CScript COINBASE_FLAGS;
extern CCriticalSection cs_main;
extern std::map<uint256, CBlockIndex*> mapBlockIndex;
extern std::set<std::pair<COutPoint, unsigned int> > setStakeSeen;
extern CBlockIndex* pindexGenesisBlock;
extern unsigned int nStakeMinAge;
extern unsigned int nNodeLifespan;
extern int nCoinbaseMaturity;
extern int nBestHeight;
extern uint256 nBestChainTrust;
extern uint256 nBestInvalidTrust;
extern uint256 hashBestChain;
extern CBlockIndex* pindexBest;
extern unsigned int nTransactionsUpdated;
extern uint64_t nLastBlockTx;
extern uint64_t nLastBlockSize;
extern int64_t nLastCoinStakeSearchInterval;
extern const std::string strMessageMagic;
extern int64_t nTimeBestReceived;
extern CCriticalSection cs_setpwalletRegistered;
extern std::set<CWallet*> setpwalletRegistered;
extern unsigned char pchMessageStart[4];
extern std::map<uint256, CBlock*> mapOrphanBlocks;
// Settings
extern int64_t nTransactionFee;
extern int64_t nReserveBalance;
extern int64_t nMinimumInputValue;
extern bool fUseFastIndex;
extern unsigned int nDerivationMethodIndex;
extern bool fEnforceCanonical;
// Minimum disk space required - used in CheckDiskSpace()
static const uint64_t nMinDiskSpace = 52428800;
class CReserveKey;
class CTxDB;
class CTxIndex;
void RegisterWallet(CWallet* pwalletIn);
void UnregisterWallet(CWallet* pwalletIn);
void SyncWithWallets(const CTransaction& tx, const CBlock* pblock = NULL, bool fUpdate = false, bool fConnect = true);
bool ProcessBlock(CNode* pfrom, CBlock* pblock);
bool CheckDiskSpace(uint64_t 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();
CBlockIndex* FindBlockByHeight(int nHeight);
bool ProcessMessages(CNode* pfrom);
bool SendMessages(CNode* pto, bool fSendTrickle);
bool LoadExternalBlockFile(FILE* fileIn);
bool CheckProofOfWork(uint256 hash, unsigned int nBits);
unsigned int GetNextTargetRequired(const CBlockIndex* pindexLast, bool fProofOfStake);
int64_t GetProofOfWorkReward(int64_t nFees);
int64_t GetProofOfStakeReward(int64_t nCoinAge, int64_t nFees);
unsigned int ComputeMinWork(unsigned int nBase, int64_t nTime);
unsigned int ComputeMinStake(unsigned int nBase, int64_t nTime, unsigned int nBlockTime);
int GetNumBlocksOfPeers();
bool IsInitialBlockDownload();
std::string GetWarnings(std::string strFor);
bool GetTransaction(const uint256 &hash, CTransaction &tx, uint256 &hashBlock);
uint256 WantedByOrphan(const CBlock* pblockOrphan);
const CBlockIndex* GetLastBlockIndex(const CBlockIndex* pindex, bool fProofOfStake);
void StakeMiner(CWallet *pwallet);
void ResendWalletTransactions(bool fForce = false);
bool GetWalletFile(CWallet* pwallet, std::string &strWalletFileOut);
/** Position on disk for a particular transaction. */
class CDiskTxPos
{
public:
unsigned int nFile;
unsigned int nBlockPos;
unsigned int nTxPos;
CDiskTxPos()
{
SetNull();
}
CDiskTxPos(unsigned int nFileIn, unsigned int nBlockPosIn, unsigned int nTxPosIn)
{
nFile = nFileIn;
nBlockPos = nBlockPosIn;
nTxPos = nTxPosIn;
}
IMPLEMENT_SERIALIZE( READWRITE(FLATDATA(*this)); )
void SetNull() { nFile = (unsigned int) -1; nBlockPos = 0; nTxPos = 0; }
bool IsNull() const { return (nFile == (unsigned int) -1); }
friend bool operator==(const CDiskTxPos& a, const CDiskTxPos& b)
{
return (a.nFile == b.nFile &&
a.nBlockPos == b.nBlockPos &&
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("(nFile=%u, nBlockPos=%u, nTxPos=%u)", nFile, nBlockPos, nTxPos);
}
void print() const
{
printf("%s", ToString().c_str());
}
};
/** An inpoint - a combination of a transaction and an index n into its vin */
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 = (unsigned int) -1; }
bool IsNull() const { return (ptx == NULL && n == (unsigned int) -1); }
};
/** An outpoint - a combination of a transaction hash and an index n into its vout */
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 = (unsigned int) -1; }
bool IsNull() const { return (hash == 0 && n == (unsigned int) -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, %u)", 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 = std::numeric_limits<unsigned int>::max();
}
explicit CTxIn(COutPoint prevoutIn, CScript scriptSigIn=CScript(), unsigned int nSequenceIn=std::numeric_limits<unsigned int>::max())
{
prevout = prevoutIn;
scriptSig = scriptSigIn;
nSequence = nSequenceIn;
}
CTxIn(uint256 hashPrevTx, unsigned int nOut, CScript scriptSigIn=CScript(), unsigned int nSequenceIn=std::numeric_limits<unsigned int>::max())
{
prevout = COutPoint(hashPrevTx, nOut);
scriptSig = scriptSigIn;
nSequence = nSequenceIn;
}
IMPLEMENT_SERIALIZE
(
READWRITE(prevout);
READWRITE(scriptSig);
READWRITE(nSequence);
)
bool IsFinal() const
{
return (nSequence == std::numeric_limits<unsigned int>::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 ToStringShort() const
{
return strprintf(" %s %d", prevout.hash.ToString().c_str(), prevout.n);
}
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 != std::numeric_limits<unsigned int>::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_t nValue;
CScript scriptPubKey;
CTxOut()
{
SetNull();
}
CTxOut(int64_t nValueIn, CScript scriptPubKeyIn)
{
nValue = nValueIn;
scriptPubKey = scriptPubKeyIn;
}
IMPLEMENT_SERIALIZE
(
READWRITE(nValue);
READWRITE(scriptPubKey);
)
void SetNull()
{
nValue = -1;
scriptPubKey.clear();
}
bool IsNull()
{
return (nValue == -1);
}
void SetEmpty()
{
nValue = 0;
scriptPubKey.clear();
}
bool IsEmpty() const
{
return (nValue == 0 && scriptPubKey.empty());
}
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 ToStringShort() const
{
return strprintf(" out %s %s", FormatMoney(nValue).c_str(), scriptPubKey.ToString(true).c_str());
}
std::string ToString() const
{
if (IsEmpty()) return "CTxOut(empty)";
if (scriptPubKey.size() < 6)
return "CTxOut(error)";
return strprintf("CTxOut(nValue=%s, scriptPubKey=%s)", FormatMoney(nValue).c_str(), scriptPubKey.ToString().c_str());
}
void print() const
{
printf("%s\n", ToString().c_str());
}
};
enum GetMinFee_mode
{
GMF_BLOCK,
GMF_RELAY,
GMF_SEND,
};
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:
static const int CURRENT_VERSION=1;
static const int TXMSG_VERSION=2;
int nVersion;
unsigned int nTime;
std::vector<CTxIn> vin;
std::vector<CTxOut> vout;
unsigned int nLockTime;
std::string strTxComment;
// Denial-of-service detection:
mutable int nDoS;
bool DoS(int nDoSIn, bool fIn) const { nDoS += nDoSIn; return fIn; }
CTransaction()
{
SetNull();
}
IMPLEMENT_SERIALIZE
(
READWRITE(this->nVersion);
nVersion = this->nVersion;
READWRITE(nTime);
READWRITE(vin);
READWRITE(vout);
READWRITE(nLockTime);
if(this->nVersion >= TXMSG_VERSION) {
READWRITE(strTxComment); }
)
void SetNull()
{
nVersion = CTransaction::CURRENT_VERSION;
nTime = GetAdjustedTime();
vin.clear();
vout.clear();
nLockTime = 0;
strTxComment.clear();
nDoS = 0; // Denial-of-service prevention
}
bool IsNull() const
{
return (vin.empty() && vout.empty());
}
uint256 GetHash() const
{
return SerializeHash(*this);
}
bool IsFinal(int nBlockHeight=0, int64_t 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_t)nLockTime < ((int64_t)nLockTime < LOCKTIME_THRESHOLD ? (int64_t)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 (unsigned int i = 0; i < vin.size(); i++)
if (vin[i].prevout != old.vin[i].prevout)
return false;
bool fNewer = false;
unsigned int nLowest = std::numeric_limits<unsigned int>::max();
for (unsigned 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 (vin.size() == 1 && vin[0].prevout.IsNull() && vout.size() >= 1);
}
bool IsCoinStake() const
{
// summercoinv2: the coin stake transaction is marked with the first output empty
return (vin.size() > 0 && (!vin[0].prevout.IsNull()) && vout.size() >= 2 && vout[0].IsEmpty());
}
/** Check for standard transaction types
@return True if all outputs (scriptPubKeys) use only standard transaction forms
*/
bool IsStandard() const;
/** Check for standard transaction types
@param[in] mapInputs Map of previous transactions that have outputs we're spending
@return True if all inputs (scriptSigs) use only standard transaction forms
@see CTransaction::FetchInputs
*/
bool AreInputsStandard(const MapPrevTx& mapInputs) const;
/** Count ECDSA signature operations the old-fashioned (pre-0.6) way
@return number of sigops this transaction's outputs will produce when spent
@see CTransaction::FetchInputs
*/
unsigned int GetLegacySigOpCount() const;
/** Count ECDSA signature operations in pay-to-script-hash inputs.
@param[in] mapInputs Map of previous transactions that have outputs we're spending
@return maximum number of sigops required to validate this transaction's inputs
@see CTransaction::FetchInputs
*/
unsigned int GetP2SHSigOpCount(const MapPrevTx& mapInputs) const;
/** Amount of bitcoins spent by this transaction.
@return sum of all outputs (note: does not include fees)
*/
int64_t GetValueOut() const
{
int64_t 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;
}
/** Amount of bitcoins coming in to this transaction
Note that lightweight clients may not know anything besides the hash of previous transactions,
so may not be able to calculate this.
@param[in] mapInputs Map of previous transactions that have outputs we're spending
@return Sum of value of all inputs (scriptSigs)
@see CTransaction::FetchInputs
*/
int64_t GetValueIn(const MapPrevTx& mapInputs) const;
int64_t GetMinFee(unsigned int nBlockSize=1, enum GetMinFee_mode mode=GMF_BLOCK, unsigned int nBytes = 0) const;
bool ReadFromDisk(CDiskTxPos pos, FILE** pfileRet=NULL)
{
CAutoFile filein = CAutoFile(OpenBlockFile(pos.nFile, 0, pfileRet ? "rb+" : "rb"), SER_DISK, CLIENT_VERSION);
if (!filein)
return error("CTransaction::ReadFromDisk() : OpenBlockFile failed");
// Read transaction
if (fseek(filein, pos.nTxPos, SEEK_SET) != 0)
return error("CTransaction::ReadFromDisk() : fseek failed");
try {
filein >> *this;
}
catch (std::exception &e) {
return error("%s() : deserialize or I/O error", __PRETTY_FUNCTION__);
}
// Return file pointer
if (pfileRet)
{
if (fseek(filein, pos.nTxPos, SEEK_SET) != 0)
return error("CTransaction::ReadFromDisk() : second fseek failed");
*pfileRet = filein.release();
}
return true;
}
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);
}
friend bool operator!=(const CTransaction& a, const CTransaction& b)
{
return !(a == b);
}
std::string ToStringShort() const
{
std::string str;
str += strprintf("%s %s", GetHash().ToString().c_str(), IsCoinBase()? "base" : (IsCoinStake()? "stake" : "user"));
return str;
}
std::string ToString() const
{
std::string str;
str += IsCoinBase()? "Coinbase" : (IsCoinStake()? "Coinstake" : "CTransaction");
str += strprintf("(hash=%s, nTime=%d, ver=%d, vin.size=%"PRIszu", vout.size=%"PRIszu", nLockTime=%d, strTxComment=%s)\n",
GetHash().ToString().substr(0,10).c_str(),
nTime,
nVersion,
vin.size(),
vout.size(),
nLockTime,
strTxComment.substr(0,30).c_str()
);
for (unsigned int i = 0; i < vin.size(); i++)
str += " " + vin[i].ToString() + "\n";
for (unsigned 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(CTxDB& txdb);
/** 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);
/** Sanity check previous transactions, then, if all checks succeed,
mark them as spent by this transaction.
@param[in] inputs Previous transactions (from FetchInputs)
@param[out] mapTestPool Keeps track of inputs that need to be updated on disk
@param[in] posThisTx Position of this transaction on disk
@param[in] pindexBlock
@param[in] fBlock true if called from ConnectBlock
@param[in] fMiner true if called from CreateNewBlock
@return Returns true if all checks succeed
*/
bool ConnectInputs(CTxDB& txdb, MapPrevTx inputs,
std::map<uint256, CTxIndex>& mapTestPool, const CDiskTxPos& posThisTx,
const CBlockIndex* pindexBlock, bool fBlock, bool fMiner);
bool ClientConnectInputs();
bool CheckTransaction() const;
bool AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs=true, bool* pfMissingInputs=NULL);
bool GetCoinAge(CTxDB& txdb, uint64_t& nCoinAge) const; // summercoinv2: get transaction coin age
protected:
const CTxOut& GetOutputFor(const CTxIn& input, const MapPrevTx& inputs) const;
};
/** A transaction with a merkle branch linking it to the block chain. */
class CMerkleTx : public CTransaction
{
private:
int GetDepthInMainChainINTERNAL(CBlockIndex* &pindexRet) const;
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);
// Return depth of transaction in blockchain:
// -1 : not in blockchain, and not in memory pool (conflicted transaction)
// 0 : in memory pool, waiting to be included in a block
// >=1 : this many blocks deep in the main chain
int GetDepthInMainChain(CBlockIndex* &pindexRet) const;
int GetDepthInMainChain() const { CBlockIndex *pindexRet; return GetDepthInMainChain(pindexRet); }
bool IsInMainChain() const { CBlockIndex *pindexRet; return GetDepthInMainChainINTERNAL(pindexRet) > 0; }
int GetBlocksToMaturity() const;
bool AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs=true);
bool AcceptToMemoryPool();
};
/** A txdb record that contains the disk location of a transaction and the
* locations of transactions that spend its outputs. vSpent is really only
* used as a flag, but having the location is very helpful for debugging.
*/
class CTxIndex
{
public:
CDiskTxPos pos;
std::vector<CDiskTxPos> vSpent;
CTxIndex()
{
SetNull();
}
CTxIndex(const CDiskTxPos& posIn, unsigned int nOutputs)
{
pos = posIn;
vSpent.resize(nOutputs);
}
IMPLEMENT_SERIALIZE
(
if (!(nType & SER_GETHASH))
READWRITE(nVersion);
READWRITE(pos);
READWRITE(vSpent);
)
void SetNull()
{
pos.SetNull();
vSpent.clear();
}
bool IsNull()
{
return pos.IsNull();
}
friend bool operator==(const CTxIndex& a, const CTxIndex& b)
{
return (a.pos == b.pos &&
a.vSpent == b.vSpent);
}
friend bool operator!=(const CTxIndex& a, const CTxIndex& b)
{
return !(a == b);
}
int GetDepthInMainChain() const;
};
/** 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
static const int CURRENT_VERSION=6;
int nVersion;
uint256 hashPrevBlock;
uint256 hashMerkleRoot;
unsigned int nTime;
unsigned int nBits;
unsigned int nNonce;
// network and disk
std::vector<CTransaction> vtx;
// summercoinv2: block signature - signed by one of the coin base txout[N]'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()
{
SetNull();
}
IMPLEMENT_SERIALIZE
(
READWRITE(this->nVersion);
nVersion = this->nVersion;
READWRITE(hashPrevBlock);
READWRITE(hashMerkleRoot);
READWRITE(nTime);
READWRITE(nBits);
READWRITE(nNonce);
// 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()
{
nVersion = CBlock::CURRENT_VERSION;
hashPrevBlock = 0;
hashMerkleRoot = 0;
nTime = 0;
nBits = 0;
nNonce = 0;
vtx.clear();
vchBlockSig.clear();
vMerkleTree.clear();
nDoS = 0;
}
bool IsNull() const
{
return (nBits == 0);
}
uint256 GetHash() const
{
return Hash9(BEGIN(nVersion), END(nNonce));
}
int64_t GetBlockTime() const
{
return (int64_t)nTime;
}
void UpdateTime(const CBlockIndex* pindexPrev);
// entropy bit for stake modifier if chosen by modifier
unsigned int GetStakeEntropyBit() const
{
// Take last bit of block hash as entropy bit
unsigned int nEntropyBit = ((GetHash().Get64()) & 1llu);
if (fDebug && GetBoolArg("-printstakemodifier"))
printf("GetStakeEntropyBit: hashBlock=%s nEntropyBit=%u\n", GetHash().ToString().c_str(), nEntropyBit);
return nEntropyBit;
}
// summercoinv2: 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);
}
// summercoinv2: get max transaction timestamp
int64_t GetMaxTransactionTime() const