diff options
Diffstat (limited to 'src/main.cpp')
| -rw-r--r-- | src/main.cpp | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/src/main.cpp b/src/main.cpp index 18d3c2f0ea..1dbd50f4e6 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -277,11 +277,8 @@ bool CTransaction::IsStandard() const // bool CTransaction::AreInputsStandard(const MapPrevTx& mapInputs) const { - if (fTestNet) - return true; // Allow non-standard on testnet - if (IsCoinBase()) - return true; // Coinbases are allowed to have any input + return true; // Coinbases don't use vin normally for (int i = 0; i < vin.size(); i++) { @@ -492,15 +489,18 @@ bool CTransaction::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs, bool* pfMi { MapPrevTx mapInputs; map<uint256, CTxIndex> mapUnused; - if (!FetchInputs(txdb, mapUnused, false, false, mapInputs)) + bool fInvalid = false; + if (!FetchInputs(txdb, mapUnused, false, false, mapInputs, fInvalid)) { + if (fInvalid) + return error("AcceptToMemoryPool() : FetchInputs found invalid tx %s", hash.ToString().substr(0,10).c_str()); if (pfMissingInputs) *pfMissingInputs = true; return error("AcceptToMemoryPool() : FetchInputs failed %s", hash.ToString().substr(0,10).c_str()); } // Check for non-standard pay-to-script-hash in inputs - if (!AreInputsStandard(mapInputs)) + if (!AreInputsStandard(mapInputs) && !fTestNet) return error("AcceptToMemoryPool() : nonstandard transaction input"); // Note: if you modify this code to accept non-standard transactions, then @@ -543,8 +543,6 @@ bool CTransaction::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs, bool* pfMi // This is done last to help prevent CPU exhaustion denial-of-service attacks. if (!ConnectInputs(mapInputs, mapUnused, CDiskTxPos(1,1,1), pindexBest, false, false)) { - if (pfMissingInputs) - *pfMissingInputs = true; return error("AcceptToMemoryPool() : ConnectInputs failed %s", hash.ToString().substr(0,10).c_str()); } } @@ -920,8 +918,14 @@ bool CTransaction::DisconnectInputs(CTxDB& txdb) bool CTransaction::FetchInputs(CTxDB& txdb, const map<uint256, CTxIndex>& mapTestPool, - bool fBlock, bool fMiner, MapPrevTx& inputsRet) + bool fBlock, bool fMiner, MapPrevTx& inputsRet, bool& fInvalid) { + // FetchInputs can return false either because we just haven't seen some inputs + // (in which case the transaction should be stored as an orphan) + // or because the transaction is malformed (in which case the transaction should + // be dropped). If tx is definitely invalid, fInvalid will be set to true. + fInvalid = false; + if (IsCoinBase()) return true; // Coinbase transactions have no inputs to fetch. @@ -977,7 +981,12 @@ bool CTransaction::FetchInputs(CTxDB& txdb, const map<uint256, CTxIndex>& mapTes const CTxIndex& txindex = inputsRet[prevout.hash].first; const CTransaction& txPrev = inputsRet[prevout.hash].second; if (prevout.n >= txPrev.vout.size() || prevout.n >= txindex.vSpent.size()) + { + // Revisit this if/when transaction replacement is implemented and allows + // adding inputs: + fInvalid = true; return DoS(100, error("FetchInputs() : %s prevout.n out of range %d %d %d prev tx %s\n%s", GetHash().ToString().substr(0,10).c_str(), prevout.n, txPrev.vout.size(), txindex.vSpent.size(), prevout.hash.ToString().substr(0,10).c_str(), txPrev.ToString().c_str())); + } } return true; @@ -1198,7 +1207,8 @@ bool CBlock::ConnectBlock(CTxDB& txdb, CBlockIndex* pindex) MapPrevTx mapInputs; if (!tx.IsCoinBase()) { - if (!tx.FetchInputs(txdb, mapQueuedChanges, true, false, mapInputs)) + bool fInvalid; + if (!tx.FetchInputs(txdb, mapQueuedChanges, true, false, mapInputs, fInvalid)) return false; if (fStrictPayToScriptHash) @@ -3056,7 +3066,8 @@ CBlock* CreateNewBlock(CReserveKey& reservekey) // because we're already processing them in order of dependency map<uint256, CTxIndex> mapTestPoolTmp(mapTestPool); MapPrevTx mapInputs; - if (!tx.FetchInputs(txdb, mapTestPoolTmp, false, true, mapInputs)) + bool fInvalid; + if (!tx.FetchInputs(txdb, mapTestPoolTmp, false, true, mapInputs, fInvalid)) continue; int64 nFees = tx.GetValueIn(mapInputs)-tx.GetValueOut(); |