}
// ppcoin: create coin stake transaction
-bool CWallet::CreateCoinStake(const CKeyStore& keystore, unsigned int nBits, CTransaction& txNew)
+bool CWallet::CreateCoinStake(const CKeyStore& keystore, unsigned int nBits, int64 nSearchInterval, CTransaction& txNew)
{
// The following split & combine thresholds are important to security
// Should not be adjusted if you don't understand the consequences
continue; // only count coins meeting min age requirement
int64 nValueIn = pcoin.first->vout[pcoin.second].nValue;
- CBigNum bnCoinDay = CBigNum(nValueIn) * (txNew.nTime-pcoin.first->nTime) / COIN / (24 * 60 * 60);
- // Calculate hash
- CDataStream ss(SER_GETHASH, 0);
- ss << nBits << block.nTime << (txindex.pos.nTxPos - txindex.pos.nBlockPos) << pcoin.first->nTime << pcoin.second << txNew.nTime;
- if (CBigNum(Hash(ss.begin(), ss.end())) <= bnCoinDay * bnTargetPerCoinDay)
+ CBigNum bnCoinDay = CBigNum(nValueIn) * min(txNew.nTime-pcoin.first->nTime, (unsigned int)STAKE_MAX_AGE) / COIN / (24 * 60 * 60);
+
+ bool fKernelFound = false;
+ for (int n=0; n<min(nSearchInterval,(int64)5) && !fKernelFound && !fShutdown; n++)
{
- // Found a kernel
- if (fDebug && GetBoolArg("-printcoinstake"))
- printf("CreateCoinStake : kernel found\n");
- vector<valtype> vSolutions;
- txnouttype whichType;
- CScript scriptPubKeyOut;
- scriptPubKeyKernel = pcoin.first->vout[pcoin.second].scriptPubKey;
- if (!Solver(scriptPubKeyKernel, whichType, vSolutions))
+ // Randomly pick a timestamp from protocol allowed range
+ txNew.nTime = GetAdjustedTime() - GetRandInt(60 * 60 * 2 - 60);
+ // Calculate hash
+ CDataStream ss(SER_GETHASH, 0);
+ ss << nBits << block.nTime << (txindex.pos.nTxPos - txindex.pos.nBlockPos) << pcoin.first->nTime << pcoin.second << txNew.nTime;
+ if (CBigNum(Hash(ss.begin(), ss.end())) <= bnCoinDay * bnTargetPerCoinDay)
{
+ // Found a kernel
if (fDebug && GetBoolArg("-printcoinstake"))
- printf("CreateCoinStake : failed to parse kernel\n", whichType);
- continue;
- }
- if (fDebug && GetBoolArg("-printcoinstake"))
- printf("CreateCoinStake : parsed kernel type=%d\n", whichType);
- if (whichType != TX_PUBKEY && whichType != TX_PUBKEYHASH)
- {
+ printf("CreateCoinStake : kernel found\n");
+ vector<valtype> vSolutions;
+ txnouttype whichType;
+ CScript scriptPubKeyOut;
+ scriptPubKeyKernel = pcoin.first->vout[pcoin.second].scriptPubKey;
+ if (!Solver(scriptPubKeyKernel, whichType, vSolutions))
+ {
+ if (fDebug && GetBoolArg("-printcoinstake"))
+ printf("CreateCoinStake : failed to parse kernel\n", whichType);
+ break;
+ }
if (fDebug && GetBoolArg("-printcoinstake"))
- printf("CreateCoinStake : no support for kernel type=%d\n", whichType);
- continue; // only support pay to public key and pay to address
- }
- if (whichType == TX_PUBKEYHASH) // pay to address type
- {
- // convert to pay to public key type
- CKey key;
- if (!keystore.GetKey(uint160(vSolutions[0]), key))
+ printf("CreateCoinStake : parsed kernel type=%d\n", whichType);
+ if (whichType != TX_PUBKEY && whichType != TX_PUBKEYHASH)
{
if (fDebug && GetBoolArg("-printcoinstake"))
- printf("CreateCoinStake : failed to get key for kernel type=%d\n", whichType);
- continue; // unable to find corresponding public key
+ printf("CreateCoinStake : no support for kernel type=%d\n", whichType);
+ break; // only support pay to public key and pay to address
}
- scriptPubKeyOut << key.GetPubKey() << OP_CHECKSIG;
+ if (whichType == TX_PUBKEYHASH) // pay to address type
+ {
+ // convert to pay to public key type
+ CKey key;
+ if (!keystore.GetKey(uint160(vSolutions[0]), key))
+ {
+ if (fDebug && GetBoolArg("-printcoinstake"))
+ printf("CreateCoinStake : failed to get key for kernel type=%d\n", whichType);
+ break; // unable to find corresponding public key
+ }
+ scriptPubKeyOut << key.GetPubKey() << OP_CHECKSIG;
+ }
+ else
+ scriptPubKeyOut = scriptPubKeyKernel;
+
+ txNew.vin.push_back(CTxIn(pcoin.first->GetHash(), pcoin.second));
+ nCredit += pcoin.first->vout[pcoin.second].nValue;
+ vwtxPrev.push_back(pcoin.first);
+ txNew.vout.push_back(CTxOut(0, scriptPubKeyOut));
+ if (block.GetBlockTime() + nStakeSplitAge > txNew.nTime)
+ txNew.vout.push_back(CTxOut(0, scriptPubKeyOut)); //split stake
+ if (fDebug && GetBoolArg("-printcoinstake"))
+ printf("CreateCoinStake : added kernel type=%d\n", whichType);
+ fKernelFound = true;
}
- else
- scriptPubKeyOut = scriptPubKeyKernel;
-
- txNew.vin.push_back(CTxIn(pcoin.first->GetHash(), pcoin.second));
- nCredit += pcoin.first->vout[pcoin.second].nValue;
- vwtxPrev.push_back(pcoin.first);
- txNew.vout.push_back(CTxOut(0, scriptPubKeyOut));
- if (block.GetBlockTime() + nStakeSplitAge > txNew.nTime)
- txNew.vout.push_back(CTxOut(0, scriptPubKeyOut)); //split stake
- if (fDebug && GetBoolArg("-printcoinstake"))
- printf("CreateCoinStake : added kernel type=%d\n", whichType);
- break;
}
+ if (fKernelFound || fShutdown)
+ break; // if kernel is found stop searching
}
if (nCredit == 0 || nCredit > nBalance - nReserveBalance)
return false;
continue;
for (int n=0; n < pcoin->vout.size(); n++)
{
- if (pcoin->IsSpent(n) && (txindex.vSpent.size() <= n || txindex.vSpent[n].IsNull()))
+ if (IsMine(pcoin->vout[n]) && pcoin->IsSpent(n) && (txindex.vSpent.size() <= n || txindex.vSpent[n].IsNull()))
{
- printf("CheckSpentCoins found lost coin %sppc %s[%d]\n", FormatMoney(pcoin->GetCredit()).c_str(), pcoin->GetHash().ToString().c_str(), n);
+ printf("CheckSpentCoins found lost coin %sppc %s[%d]\n", FormatMoney(pcoin->vout[n].nValue).c_str(), pcoin->GetHash().ToString().c_str(), n);
nMismatchFound++;
nBalanceInQuestion += pcoin->vout[n].nValue;
}
- else if (!pcoin->IsSpent(n) && (txindex.vSpent.size() > n && !txindex.vSpent[n].IsNull()))
+ else if (IsMine(pcoin->vout[n]) && !pcoin->IsSpent(n) && (txindex.vSpent.size() > n && !txindex.vSpent[n].IsNull()))
{
- printf("CheckSpentCoins found spent coin %sppc %s[%d]\n", FormatMoney(pcoin->GetCredit()).c_str(), pcoin->GetHash().ToString().c_str(), n);
+ printf("CheckSpentCoins found spent coin %sppc %s[%d]\n", FormatMoney(pcoin->vout[n].nValue).c_str(), pcoin->GetHash().ToString().c_str(), n);
nMismatchFound++;
nBalanceInQuestion += pcoin->vout[n].nValue;
}
continue;
for (int n=0; n < pcoin->vout.size(); n++)
{
- if (pcoin->IsSpent(n) && (txindex.vSpent.size() <= n || txindex.vSpent[n].IsNull()))
+ if (IsMine(pcoin->vout[n]) && pcoin->IsSpent(n) && (txindex.vSpent.size() <= n || txindex.vSpent[n].IsNull()))
{
- printf("FixSpentCoins found lost coin %sppc %s[%d]\n", FormatMoney(pcoin->GetCredit()).c_str(), pcoin->GetHash().ToString().c_str(), n);
+ printf("FixSpentCoins found lost coin %sppc %s[%d]\n", FormatMoney(pcoin->vout[n].nValue).c_str(), pcoin->GetHash().ToString().c_str(), n);
nMismatchFound++;
nBalanceInQuestion += pcoin->vout[n].nValue;
pcoin->MarkUnspent(n);
pcoin->WriteToDisk();
}
- else if (!pcoin->IsSpent(n) && (txindex.vSpent.size() > n && !txindex.vSpent[n].IsNull()))
+ else if (IsMine(pcoin->vout[n]) && !pcoin->IsSpent(n) && (txindex.vSpent.size() > n && !txindex.vSpent[n].IsNull()))
{
- printf("FixSpentCoins found spent coin %sppc %s[%d]\n", FormatMoney(pcoin->GetCredit()).c_str(), pcoin->GetHash().ToString().c_str(), n);
+ printf("FixSpentCoins found spent coin %sppc %s[%d]\n", FormatMoney(pcoin->vout[n].nValue).c_str(), pcoin->GetHash().ToString().c_str(), n);
nMismatchFound++;
nBalanceInQuestion += pcoin->vout[n].nValue;
pcoin->MarkSpent(n);
git://git.novaco.in / novacoin.git / blobdiff