// ppcoin: optional setting to create coinstake only when unlocked;
// serves to disable the trivial sendmoney when OS account compromised
-bool fWalletUnlockStakeOnly = false;
+bool fWalletUnlockMintOnly = false;
bool CWallet::Unlock(const SecureString& strWalletPassphrase)
{
return false;
BOOST_FOREACH(PAIRTYPE(const CWalletTx*, unsigned int) pcoin, setCoins)
{
+ // Attempt to add more inputs of the same key
if (pcoin.first->vout[pcoin.second].scriptPubKey == txNew.vout[1].scriptPubKey && pcoin.first->GetHash() != txNew.vin[0].prevout.hash)
{
+ // Stop adding more inputs if value is already pretty significant
+ if (nCredit > MAX_MINT_PROOF_OF_WORK)
+ break;
+ // Stop adding inputs if reached reserve limit
if (nCredit + pcoin.first->vout[pcoin.second].nValue > nBalance - nReserveBalance)
break;
+ // Do not add additional significant input
+ if (pcoin.first->vout[pcoin.second].nValue > MAX_MINT_PROOF_OF_WORK)
+ continue;
txNew.vin.push_back(CTxIn(pcoin.first->GetHash(), pcoin.second));
nCredit += pcoin.first->vout[pcoin.second].nValue;
vwtxPrev.push_back(pcoin.first);
if (!SignSignature(*this, *pcoin, txNew, nIn++))
return error("CreateCoinStake : failed to sign coinstake");
}
+
+ // Limit size
+ unsigned int nBytes = ::GetSerializeSize(txNew, SER_NETWORK, PROTOCOL_VERSION);
+ if (nBytes >= MAX_BLOCK_SIZE_GEN/5)
+ return false;
+
+ // Successfully generated coinstake
return true;
}
printf("SendMoney() : %s", strError.c_str());
return strError;
}
- if (fWalletUnlockStakeOnly)
+ if (fWalletUnlockMintOnly)
{
- string strError = _("Error: Wallet unlocked for coinstake only, unable to create transaction.");
+ string strError = _("Error: Wallet unlocked for block minting only, unable to create transaction.");
printf("SendMoney() : %s", strError.c_str());
return strError;
}