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-rw-r--r--src/main.cpp526
1 files changed, 276 insertions, 250 deletions
diff --git a/src/main.cpp b/src/main.cpp
index 212240ec22..794913d282 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -93,15 +93,6 @@ void UnregisterWallet(CWallet* pwalletIn)
}
}
-// check whether the passed transaction is from us
-bool static IsFromMe(CTransaction& tx)
-{
- BOOST_FOREACH(CWallet* pwallet, setpwalletRegistered)
- if (pwallet->IsFromMe(tx))
- return true;
- return false;
-}
-
// get the wallet transaction with the given hash (if it exists)
bool static GetTransaction(const uint256& hashTx, CWalletTx& wtx)
{
@@ -369,6 +360,17 @@ bool CTransaction::IsStandard() const
if (nVersion > CTransaction::CURRENT_VERSION)
return false;
+ if (!IsFinal())
+ return false;
+
+ // Extremely large transactions with lots of inputs can cost the network
+ // almost as much to process as they cost the sender in fees, because
+ // computing signature hashes is O(ninputs*txsize). Limiting transactions
+ // to MAX_STANDARD_TX_SIZE mitigates CPU exhaustion attacks.
+ unsigned int sz = this->GetSerializeSize(SER_NETWORK, CTransaction::CURRENT_VERSION);
+ if (sz >= MAX_STANDARD_TX_SIZE)
+ return false;
+
BOOST_FOREACH(const CTxIn& txin, vin)
{
// Biggest 'standard' txin is a 3-signature 3-of-3 CHECKMULTISIG
@@ -522,28 +524,28 @@ int CMerkleTx::SetMerkleBranch(const CBlock* pblock)
-bool CTransaction::CheckTransaction() const
+bool CTransaction::CheckTransaction(CValidationState &state) const
{
// Basic checks that don't depend on any context
if (vin.empty())
- return DoS(10, error("CTransaction::CheckTransaction() : vin empty"));
+ return state.DoS(10, error("CTransaction::CheckTransaction() : vin empty"));
if (vout.empty())
- return DoS(10, error("CTransaction::CheckTransaction() : vout empty"));
+ return state.DoS(10, error("CTransaction::CheckTransaction() : vout empty"));
// Size limits
if (::GetSerializeSize(*this, SER_NETWORK, PROTOCOL_VERSION) > MAX_BLOCK_SIZE)
- return DoS(100, error("CTransaction::CheckTransaction() : size limits failed"));
+ return state.DoS(100, error("CTransaction::CheckTransaction() : size limits failed"));
// Check for negative or overflow output values
int64 nValueOut = 0;
BOOST_FOREACH(const CTxOut& txout, vout)
{
if (txout.nValue < 0)
- return DoS(100, error("CTransaction::CheckTransaction() : txout.nValue negative"));
+ return state.DoS(100, error("CTransaction::CheckTransaction() : txout.nValue negative"));
if (txout.nValue > MAX_MONEY)
- return DoS(100, error("CTransaction::CheckTransaction() : txout.nValue too high"));
+ return state.DoS(100, error("CTransaction::CheckTransaction() : txout.nValue too high"));
nValueOut += txout.nValue;
if (!MoneyRange(nValueOut))
- return DoS(100, error("CTransaction::CheckTransaction() : txout total out of range"));
+ return state.DoS(100, error("CTransaction::CheckTransaction() : txout total out of range"));
}
// Check for duplicate inputs
@@ -551,20 +553,20 @@ bool CTransaction::CheckTransaction() const
BOOST_FOREACH(const CTxIn& txin, vin)
{
if (vInOutPoints.count(txin.prevout))
- return false;
+ return state.DoS(100, error("CTransaction::CheckTransaction() : duplicate inputs"));
vInOutPoints.insert(txin.prevout);
}
if (IsCoinBase())
{
if (vin[0].scriptSig.size() < 2 || vin[0].scriptSig.size() > 100)
- return DoS(100, error("CTransaction::CheckTransaction() : coinbase script size"));
+ return state.DoS(100, error("CTransaction::CheckTransaction() : coinbase script size"));
}
else
{
BOOST_FOREACH(const CTxIn& txin, vin)
if (txin.prevout.IsNull())
- return DoS(10, error("CTransaction::CheckTransaction() : prevout is null"));
+ return state.DoS(10, error("CTransaction::CheckTransaction() : prevout is null"));
}
return true;
@@ -631,18 +633,18 @@ void CTxMemPool::pruneSpent(const uint256 &hashTx, CCoins &coins)
}
}
-bool CTxMemPool::accept(CTransaction &tx, bool fCheckInputs,
+bool CTxMemPool::accept(CValidationState &state, CTransaction &tx, bool fCheckInputs, bool fLimitFree,
bool* pfMissingInputs)
{
if (pfMissingInputs)
*pfMissingInputs = false;
- if (!tx.CheckTransaction())
+ if (!tx.CheckTransaction(state))
return error("CTxMemPool::accept() : CheckTransaction failed");
// Coinbase is only valid in a block, not as a loose transaction
if (tx.IsCoinBase())
- return tx.DoS(100, error("CTxMemPool::accept() : coinbase as individual tx"));
+ return state.DoS(100, error("CTxMemPool::accept() : coinbase as individual tx"));
// To help v0.1.5 clients who would see it as a negative number
if ((int64)tx.nLockTime > std::numeric_limits<int>::max())
@@ -715,7 +717,7 @@ bool CTxMemPool::accept(CTransaction &tx, bool fCheckInputs,
// are the actual inputs available?
if (!tx.HaveInputs(view))
- return error("CTxMemPool::accept() : inputs already spent");
+ return state.Invalid(error("CTxMemPool::accept() : inputs already spent"));
// Bring the best block into scope
view.GetBestBlock();
@@ -737,7 +739,7 @@ bool CTxMemPool::accept(CTransaction &tx, bool fCheckInputs,
// Don't accept it if it can't get into a block
int64 txMinFee = tx.GetMinFee(1000, true, GMF_RELAY);
- if (nFees < txMinFee)
+ if (fLimitFree && nFees < txMinFee)
return error("CTxMemPool::accept() : not enough fees %s, %"PRI64d" < %"PRI64d,
hash.ToString().c_str(),
nFees, txMinFee);
@@ -745,30 +747,29 @@ bool CTxMemPool::accept(CTransaction &tx, bool fCheckInputs,
// Continuously rate-limit free transactions
// This mitigates 'penny-flooding' -- sending thousands of free transactions just to
// be annoying or make others' transactions take longer to confirm.
- if (nFees < MIN_RELAY_TX_FEE)
+ if (fLimitFree && nFees < MIN_RELAY_TX_FEE)
{
- static CCriticalSection cs;
static double dFreeCount;
static int64 nLastTime;
int64 nNow = GetTime();
- {
- // Use an exponentially decaying ~10-minute window:
- dFreeCount *= pow(1.0 - 1.0/600.0, (double)(nNow - nLastTime));
- nLastTime = nNow;
- // -limitfreerelay unit is thousand-bytes-per-minute
- // At default rate it would take over a month to fill 1GB
- if (dFreeCount > GetArg("-limitfreerelay", 15)*10*1000 && !IsFromMe(tx))
- return error("CTxMemPool::accept() : free transaction rejected by rate limiter");
- if (fDebug)
- printf("Rate limit dFreeCount: %g => %g\n", dFreeCount, dFreeCount+nSize);
- dFreeCount += nSize;
- }
+ LOCK(cs);
+
+ // Use an exponentially decaying ~10-minute window:
+ dFreeCount *= pow(1.0 - 1.0/600.0, (double)(nNow - nLastTime));
+ nLastTime = nNow;
+ // -limitfreerelay unit is thousand-bytes-per-minute
+ // At default rate it would take over a month to fill 1GB
+ if (dFreeCount >= GetArg("-limitfreerelay", 15)*10*1000)
+ return error("CTxMemPool::accept() : free transaction rejected by rate limiter");
+ if (fDebug)
+ printf("Rate limit dFreeCount: %g => %g\n", dFreeCount, dFreeCount+nSize);
+ dFreeCount += nSize;
}
// Check against previous transactions
// This is done last to help prevent CPU exhaustion denial-of-service attacks.
- if (!tx.CheckInputs(view, true, SCRIPT_VERIFY_P2SH))
+ if (!tx.CheckInputs(state, view, true, SCRIPT_VERIFY_P2SH))
{
return error("CTxMemPool::accept() : ConnectInputs failed %s", hash.ToString().substr(0,10).c_str());
}
@@ -797,9 +798,13 @@ bool CTxMemPool::accept(CTransaction &tx, bool fCheckInputs,
return true;
}
-bool CTransaction::AcceptToMemoryPool(bool fCheckInputs, bool* pfMissingInputs)
+bool CTransaction::AcceptToMemoryPool(CValidationState &state, bool fCheckInputs, bool fLimitFree, bool* pfMissingInputs)
{
- return mempool.accept(*this, fCheckInputs, pfMissingInputs);
+ try {
+ return mempool.accept(state, *this, fCheckInputs, fLimitFree, pfMissingInputs);
+ } catch(std::runtime_error &e) {
+ return state.Abort(_("System error: ") + e.what());
+ }
}
bool CTxMemPool::addUnchecked(const uint256& hash, CTransaction &tx)
@@ -910,9 +915,10 @@ int CMerkleTx::GetBlocksToMaturity() const
}
-bool CMerkleTx::AcceptToMemoryPool(bool fCheckInputs)
+bool CMerkleTx::AcceptToMemoryPool(bool fCheckInputs, bool fLimitFree)
{
- return CTransaction::AcceptToMemoryPool(fCheckInputs);
+ CValidationState state;
+ return CTransaction::AcceptToMemoryPool(state, fCheckInputs, fLimitFree);
}
@@ -928,10 +934,10 @@ bool CWalletTx::AcceptWalletTransaction(bool fCheckInputs)
{
uint256 hash = tx.GetHash();
if (!mempool.exists(hash) && pcoinsTip->HaveCoins(hash))
- tx.AcceptToMemoryPool(fCheckInputs);
+ tx.AcceptToMemoryPool(fCheckInputs, false);
}
}
- return AcceptToMemoryPool(fCheckInputs);
+ return AcceptToMemoryPool(fCheckInputs, false);
}
return false;
}
@@ -1208,11 +1214,13 @@ void static InvalidBlockFound(CBlockIndex *pindex) {
pblocktree->WriteBlockIndex(CDiskBlockIndex(pindex));
setBlockIndexValid.erase(pindex);
InvalidChainFound(pindex);
- if (pindex->pnext)
- ConnectBestBlock(); // reorganise away from the failed block
+ if (pindex->pnext) {
+ CValidationState stateDummy;
+ ConnectBestBlock(stateDummy); // reorganise away from the failed block
+ }
}
-bool ConnectBestBlock() {
+bool ConnectBestBlock(CValidationState &state) {
do {
CBlockIndex *pindexNewBest;
@@ -1251,8 +1259,12 @@ bool ConnectBestBlock() {
BOOST_FOREACH(CBlockIndex *pindexSwitch, vAttach) {
if (fRequestShutdown)
break;
- if (!SetBestChain(pindexSwitch))
- return false;
+ try {
+ if (!SetBestChain(state, pindexSwitch))
+ return false;
+ } catch(std::runtime_error &e) {
+ return state.Abort(_("System error: ") + e.what());
+ }
}
return true;
}
@@ -1314,22 +1326,20 @@ unsigned int CTransaction::GetP2SHSigOpCount(CCoinsViewCache& inputs) const
return nSigOps;
}
-bool CTransaction::UpdateCoins(CCoinsViewCache &inputs, CTxUndo &txundo, int nHeight, const uint256 &txhash) const
+bool CTransaction::UpdateCoins(CValidationState &state, CCoinsViewCache &inputs, CTxUndo &txundo, int nHeight, const uint256 &txhash) const
{
// mark inputs spent
if (!IsCoinBase()) {
BOOST_FOREACH(const CTxIn &txin, vin) {
CCoins &coins = inputs.GetCoins(txin.prevout.hash);
CTxInUndo undo;
- if (!coins.Spend(txin.prevout, undo))
- return error("UpdateCoins() : cannot spend input");
+ assert(coins.Spend(txin.prevout, undo));
txundo.vprevout.push_back(undo);
}
}
// add outputs
- if (!inputs.SetCoins(txhash, CCoins(*this, nHeight)))
- return error("UpdateCoins() : cannot update output");
+ assert(inputs.SetCoins(txhash, CCoins(*this, nHeight)));
return true;
}
@@ -1367,7 +1377,7 @@ bool VerifySignature(const CCoins& txFrom, const CTransaction& txTo, unsigned in
return CScriptCheck(txFrom, txTo, nIn, flags, nHashType)();
}
-bool CTransaction::CheckInputs(CCoinsViewCache &inputs, bool fScriptChecks, unsigned int flags, std::vector<CScriptCheck> *pvChecks) const
+bool CTransaction::CheckInputs(CValidationState &state, CCoinsViewCache &inputs, bool fScriptChecks, unsigned int flags, std::vector<CScriptCheck> *pvChecks) const
{
if (!IsCoinBase())
{
@@ -1377,7 +1387,7 @@ bool CTransaction::CheckInputs(CCoinsViewCache &inputs, bool fScriptChecks, unsi
// This doesn't trigger the DoS code on purpose; if it did, it would make it easier
// for an attacker to attempt to split the network.
if (!HaveInputs(inputs))
- return error("CheckInputs() : %s inputs unavailable", GetHash().ToString().substr(0,10).c_str());
+ return state.Invalid(error("CheckInputs() : %s inputs unavailable", GetHash().ToString().substr(0,10).c_str()));
// While checking, GetBestBlock() refers to the parent block.
// This is also true for mempool checks.
@@ -1392,26 +1402,26 @@ bool CTransaction::CheckInputs(CCoinsViewCache &inputs, bool fScriptChecks, unsi
// If prev is coinbase, check that it's matured
if (coins.IsCoinBase()) {
if (nSpendHeight - coins.nHeight < COINBASE_MATURITY)
- return error("CheckInputs() : tried to spend coinbase at depth %d", nSpendHeight - coins.nHeight);
+ return state.Invalid(error("CheckInputs() : tried to spend coinbase at depth %d", nSpendHeight - coins.nHeight));
}
// Check for negative or overflow input values
nValueIn += coins.vout[prevout.n].nValue;
if (!MoneyRange(coins.vout[prevout.n].nValue) || !MoneyRange(nValueIn))
- return DoS(100, error("CheckInputs() : txin values out of range"));
+ return state.DoS(100, error("CheckInputs() : txin values out of range"));
}
if (nValueIn < GetValueOut())
- return DoS(100, error("ChecktInputs() : %s value in < value out", GetHash().ToString().substr(0,10).c_str()));
+ return state.DoS(100, error("CheckInputs() : %s value in < value out", GetHash().ToString().substr(0,10).c_str()));
// Tally transaction fees
int64 nTxFee = nValueIn - GetValueOut();
if (nTxFee < 0)
- return DoS(100, error("CheckInputs() : %s nTxFee < 0", GetHash().ToString().substr(0,10).c_str()));
+ return state.DoS(100, error("CheckInputs() : %s nTxFee < 0", GetHash().ToString().substr(0,10).c_str()));
nFees += nTxFee;
if (!MoneyRange(nFees))
- return DoS(100, error("CheckInputs() : nFees out of range"));
+ return state.DoS(100, error("CheckInputs() : nFees out of range"));
// The first loop above does all the inexpensive checks.
// Only if ALL inputs pass do we perform expensive ECDSA signature checks.
@@ -1431,7 +1441,7 @@ bool CTransaction::CheckInputs(CCoinsViewCache &inputs, bool fScriptChecks, unsi
pvChecks->push_back(CScriptCheck());
check.swap(pvChecks->back());
} else if (!check())
- return DoS(100,false);
+ return state.DoS(100,false);
}
}
}
@@ -1440,56 +1450,9 @@ bool CTransaction::CheckInputs(CCoinsViewCache &inputs, bool fScriptChecks, unsi
}
-bool CTransaction::ClientCheckInputs() const
-{
- if (IsCoinBase())
- return false;
-
- // Take over previous transactions' spent pointers
- {
- LOCK(mempool.cs);
- int64 nValueIn = 0;
- for (unsigned int i = 0; i < vin.size(); i++)
- {
- // Get prev tx from single transactions in memory
- COutPoint prevout = vin[i].prevout;
- if (!mempool.exists(prevout.hash))
- return false;
- CTransaction& txPrev = mempool.lookup(prevout.hash);
-
- if (prevout.n >= txPrev.vout.size())
- return false;
-
- // Verify signature
- if (!VerifySignature(CCoins(txPrev, -1), *this, i, SCRIPT_VERIFY_P2SH, 0))
- return error("ConnectInputs() : VerifySignature failed");
-
- ///// this is redundant with the mempool.mapNextTx stuff,
- ///// not sure which I want to get rid of
- ///// this has to go away now that posNext is gone
- // // Check for conflicts
- // if (!txPrev.vout[prevout.n].posNext.IsNull())
- // return error("ConnectInputs() : prev tx already used");
- //
- // // Flag outpoints as used
- // txPrev.vout[prevout.n].posNext = posThisTx;
-
- nValueIn += txPrev.vout[prevout.n].nValue;
-
- if (!MoneyRange(txPrev.vout[prevout.n].nValue) || !MoneyRange(nValueIn))
- return error("ClientConnectInputs() : txin values out of range");
- }
- if (GetValueOut() > nValueIn)
- return false;
- }
-
- return true;
-}
-
-
-bool CBlock::DisconnectBlock(CBlockIndex *pindex, CCoinsViewCache &view, bool *pfClean)
+bool CBlock::DisconnectBlock(CValidationState &state, CBlockIndex *pindex, CCoinsViewCache &view, bool *pfClean)
{
assert(pindex == view.GetBestBlock());
@@ -1571,7 +1534,7 @@ bool CBlock::DisconnectBlock(CBlockIndex *pindex, CCoinsViewCache &view, bool *p
}
}
-void static FlushBlockFile()
+void static FlushBlockFile(bool fFinalize = false)
{
LOCK(cs_LastBlockFile);
@@ -1579,18 +1542,22 @@ void static FlushBlockFile()
FILE *fileOld = OpenBlockFile(posOld);
if (fileOld) {
+ if (fFinalize)
+ TruncateFile(fileOld, infoLastBlockFile.nSize);
FileCommit(fileOld);
fclose(fileOld);
}
fileOld = OpenUndoFile(posOld);
if (fileOld) {
+ if (fFinalize)
+ TruncateFile(fileOld, infoLastBlockFile.nUndoSize);
FileCommit(fileOld);
fclose(fileOld);
}
}
-bool FindUndoPos(int nFile, CDiskBlockPos &pos, unsigned int nAddSize);
+bool FindUndoPos(CValidationState &state, int nFile, CDiskBlockPos &pos, unsigned int nAddSize);
static CCheckQueue<CScriptCheck> scriptcheckqueue(128);
@@ -1605,10 +1572,10 @@ void ThreadScriptCheckQuit() {
scriptcheckqueue.Quit();
}
-bool CBlock::ConnectBlock(CBlockIndex* pindex, CCoinsViewCache &view, bool fJustCheck)
+bool CBlock::ConnectBlock(CValidationState &state, CBlockIndex* pindex, CCoinsViewCache &view, bool fJustCheck)
{
// Check it again in case a previous version let a bad block in
- if (!CheckBlock(!fJustCheck, !fJustCheck))
+ if (!CheckBlock(state, !fJustCheck, !fJustCheck))
return false;
// verify that the view's current state corresponds to the previous block
@@ -1643,7 +1610,7 @@ bool CBlock::ConnectBlock(CBlockIndex* pindex, CCoinsViewCache &view, bool fJust
for (unsigned int i=0; i<vtx.size(); i++) {
uint256 hash = GetTxHash(i);
if (view.HaveCoins(hash) && !view.GetCoins(hash).IsPruned())
- return error("ConnectBlock() : tried to overwrite transaction");
+ return state.DoS(100, error("ConnectBlock() : tried to overwrite transaction"));
}
}
@@ -1673,12 +1640,12 @@ bool CBlock::ConnectBlock(CBlockIndex* pindex, CCoinsViewCache &view, bool fJust
nInputs += tx.vin.size();
nSigOps += tx.GetLegacySigOpCount();
if (nSigOps > MAX_BLOCK_SIGOPS)
- return DoS(100, error("ConnectBlock() : too many sigops"));
+ return state.DoS(100, error("ConnectBlock() : too many sigops"));
if (!tx.IsCoinBase())
{
if (!tx.HaveInputs(view))
- return DoS(100, error("ConnectBlock() : inputs missing/spent"));
+ return state.DoS(100, error("ConnectBlock() : inputs missing/spent"));
if (fStrictPayToScriptHash)
{
@@ -1687,19 +1654,19 @@ bool CBlock::ConnectBlock(CBlockIndex* pindex, CCoinsViewCache &view, bool fJust
// an incredibly-expensive-to-validate block.
nSigOps += tx.GetP2SHSigOpCount(view);
if (nSigOps > MAX_BLOCK_SIGOPS)
- return DoS(100, error("ConnectBlock() : too many sigops"));
+ return state.DoS(100, error("ConnectBlock() : too many sigops"));
}
nFees += tx.GetValueIn(view)-tx.GetValueOut();
std::vector<CScriptCheck> vChecks;
- if (!tx.CheckInputs(view, fScriptChecks, flags, nScriptCheckThreads ? &vChecks : NULL))
+ if (!tx.CheckInputs(state, view, fScriptChecks, flags, nScriptCheckThreads ? &vChecks : NULL))
return false;
control.Add(vChecks);
}
CTxUndo txundo;
- if (!tx.UpdateCoins(view, txundo, pindex->nHeight, GetTxHash(i)))
+ if (!tx.UpdateCoins(state, view, txundo, pindex->nHeight, GetTxHash(i)))
return error("ConnectBlock() : UpdateInputs failed");
if (!tx.IsCoinBase())
blockundo.vtxundo.push_back(txundo);
@@ -1712,10 +1679,10 @@ bool CBlock::ConnectBlock(CBlockIndex* pindex, CCoinsViewCache &view, bool fJust
printf("- Connect %u transactions: %.2fms (%.3fms/tx, %.3fms/txin)\n", (unsigned)vtx.size(), 0.001 * nTime, 0.001 * nTime / vtx.size(), nInputs <= 1 ? 0 : 0.001 * nTime / (nInputs-1));
if (vtx[0].GetValueOut() > GetBlockValue(pindex->nHeight, nFees))
- return error("ConnectBlock() : coinbase pays too much (actual=%"PRI64d" vs limit=%"PRI64d")", vtx[0].GetValueOut(), GetBlockValue(pindex->nHeight, nFees));
+ return state.DoS(100, error("ConnectBlock() : coinbase pays too much (actual=%"PRI64d" vs limit=%"PRI64d")", vtx[0].GetValueOut(), GetBlockValue(pindex->nHeight, nFees)));
if (!control.Wait())
- return DoS(100, false);
+ return state.DoS(100, false);
int64 nTime2 = GetTimeMicros() - nStart;
if (fBenchmark)
printf("- Verify %u txins: %.2fms (%.3fms/txin)\n", nInputs - 1, 0.001 * nTime2, nInputs <= 1 ? 0 : 0.001 * nTime2 / (nInputs-1));
@@ -1728,10 +1695,10 @@ bool CBlock::ConnectBlock(CBlockIndex* pindex, CCoinsViewCache &view, bool fJust
{
if (pindex->GetUndoPos().IsNull()) {
CDiskBlockPos pos;
- if (!FindUndoPos(pindex->nFile, pos, ::GetSerializeSize(blockundo, SER_DISK, CLIENT_VERSION) + 40))
+ if (!FindUndoPos(state, pindex->nFile, pos, ::GetSerializeSize(blockundo, SER_DISK, CLIENT_VERSION) + 40))
return error("ConnectBlock() : FindUndoPos failed");
if (!blockundo.WriteToDisk(pos, pindex->pprev->GetBlockHash()))
- return error("ConnectBlock() : CBlockUndo::WriteToDisk failed");
+ return state.Abort(_("Failed to write undo data"));
// update nUndoPos in block index
pindex->nUndoPos = pos.nPos;
@@ -1742,15 +1709,15 @@ bool CBlock::ConnectBlock(CBlockIndex* pindex, CCoinsViewCache &view, bool fJust
CDiskBlockIndex blockindex(pindex);
if (!pblocktree->WriteBlockIndex(blockindex))
- return error("ConnectBlock() : WriteBlockIndex failed");
+ return state.Abort(_("Failed to write block index"));
}
if (fTxIndex)
- pblocktree->WriteTxIndex(vPos);
+ if (!pblocktree->WriteTxIndex(vPos))
+ return state.Abort(_("Failed to write transaction index"));
// add this block to the view's block chain
- if (!view.SetBestBlock(pindex))
- return false;
+ assert(view.SetBestBlock(pindex));
// Watch for transactions paying to me
for (unsigned int i=0; i<vtx.size(); i++)
@@ -1759,7 +1726,7 @@ bool CBlock::ConnectBlock(CBlockIndex* pindex, CCoinsViewCache &view, bool fJust
return true;
}
-bool SetBestChain(CBlockIndex* pindexNew)
+bool SetBestChain(CValidationState &state, CBlockIndex* pindexNew)
{
// All modifications to the coin state will be done in this cache.
// Only when all have succeeded, we push it to pcoinsTip.
@@ -1770,13 +1737,14 @@ bool SetBestChain(CBlockIndex* pindexNew)
CBlockIndex* plonger = pindexNew;
while (pfork && pfork != plonger)
{
- while (plonger->nHeight > pfork->nHeight)
- if (!(plonger = plonger->pprev))
- return error("SetBestChain() : plonger->pprev is null");
+ while (plonger->nHeight > pfork->nHeight) {
+ plonger = plonger->pprev;
+ assert(plonger != NULL);
+ }
if (pfork == plonger)
break;
- if (!(pfork = pfork->pprev))
- return error("SetBestChain() : pfork->pprev is null");
+ pfork = pfork->pprev;
+ assert(pfork != NULL);
}
// List of what to disconnect (typically nothing)
@@ -1800,9 +1768,9 @@ bool SetBestChain(CBlockIndex* pindexNew)
BOOST_FOREACH(CBlockIndex* pindex, vDisconnect) {
CBlock block;
if (!block.ReadFromDisk(pindex))
- return error("SetBestBlock() : ReadFromDisk for disconnect failed");
+ return state.Abort(_("Failed to read block"));
int64 nStart = GetTimeMicros();
- if (!block.DisconnectBlock(pindex, view))
+ if (!block.DisconnectBlock(state, pindex, view))
return error("SetBestBlock() : DisconnectBlock %s failed", BlockHashStr(pindex->GetBlockHash()).c_str());
if (fBenchmark)
printf("- Disconnect: %.2fms\n", (GetTimeMicros() - nStart) * 0.001);
@@ -1820,11 +1788,13 @@ bool SetBestChain(CBlockIndex* pindexNew)
BOOST_FOREACH(CBlockIndex *pindex, vConnect) {
CBlock block;
if (!block.ReadFromDisk(pindex))
- return error("SetBestBlock() : ReadFromDisk for connect failed");
+ return state.Abort(_("Failed to read block"));
int64 nStart = GetTimeMicros();
- if (!block.ConnectBlock(pindex, view)) {
- InvalidChainFound(pindexNew);
- InvalidBlockFound(pindex);
+ if (!block.ConnectBlock(state, pindex, view)) {
+ if (state.IsInvalid()) {
+ InvalidChainFound(pindexNew);
+ InvalidBlockFound(pindex);
+ }
return error("SetBestBlock() : ConnectBlock %s failed", BlockHashStr(pindex->GetBlockHash()).c_str());
}
if (fBenchmark)
@@ -1838,8 +1808,7 @@ bool SetBestChain(CBlockIndex* pindexNew)
// Flush changes to global coin state
int64 nStart = GetTimeMicros();
int nModified = view.GetCacheSize();
- if (!view.Flush())
- return error("SetBestBlock() : unable to modify coin state");
+ assert(view.Flush());
int64 nTime = GetTimeMicros() - nStart;
if (fBenchmark)
printf("- Flush %i transactions: %.2fms (%.4fms/tx)\n", nModified, 0.001 * nTime, 0.001 * nTime / nModified);
@@ -1847,10 +1816,17 @@ bool SetBestChain(CBlockIndex* pindexNew)
// Make sure it's successfully written to disk before changing memory structure
bool fIsInitialDownload = IsInitialBlockDownload();
if (!fIsInitialDownload || pcoinsTip->GetCacheSize() > nCoinCacheSize) {
+ // Typical CCoins structures on disk are around 100 bytes in size.
+ // Pushing a new one to the database can cause it to be written
+ // twice (once in the log, and once in the tables). This is already
+ // an overestimation, as most will delete an existing entry or
+ // overwrite one. Still, use a conservative safety factor of 2.
+ if (!CheckDiskSpace(100 * 2 * 2 * pcoinsTip->GetCacheSize()))
+ return state.Error();
FlushBlockFile();
pblocktree->Sync();
if (!pcoinsTip->Flush())
- return false;
+ return state.Abort(_("Failed to write to coin database"));
}
// At this point, all changes have been done to the database.
@@ -1867,8 +1843,11 @@ bool SetBestChain(CBlockIndex* pindexNew)
pindex->pprev->pnext = pindex;
// Resurrect memory transactions that were in the disconnected branch
- BOOST_FOREACH(CTransaction& tx, vResurrect)
- tx.AcceptToMemoryPool();
+ BOOST_FOREACH(CTransaction& tx, vResurrect) {
+ // ignore validation errors in resurrected transactions
+ CValidationState stateDummy;
+ tx.AcceptToMemoryPool(stateDummy, true, false);
+ }
// Delete redundant memory transactions that are in the connected branch
BOOST_FOREACH(CTransaction& tx, vDelete) {
@@ -1925,17 +1904,16 @@ bool SetBestChain(CBlockIndex* pindexNew)
}
-bool CBlock::AddToBlockIndex(const CDiskBlockPos &pos)
+bool CBlock::AddToBlockIndex(CValidationState &state, const CDiskBlockPos &pos)
{
// Check for duplicate
uint256 hash = GetHash();
if (mapBlockIndex.count(hash))
- return error("AddToBlockIndex() : %s already exists", BlockHashStr(hash).c_str());
+ return state.Invalid(error("AddToBlockIndex() : %s already exists", BlockHashStr(hash).c_str()));
// Construct new block index object
CBlockIndex* pindexNew = new CBlockIndex(*this);
- if (!pindexNew)
- return error("AddToBlockIndex() : new CBlockIndex failed");
+ assert(pindexNew);
map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.insert(make_pair(hash, pindexNew)).first;
pindexNew->phashBlock = &((*mi).first);
map<uint256, CBlockIndex*>::iterator miPrev = mapBlockIndex.find(hashPrevBlock);
@@ -1953,10 +1931,11 @@ bool CBlock::AddToBlockIndex(const CDiskBlockPos &pos)
pindexNew->nStatus = BLOCK_VALID_TRANSACTIONS | BLOCK_HAVE_DATA;
setBlockIndexValid.insert(pindexNew);
- pblocktree->WriteBlockIndex(CDiskBlockIndex(pindexNew));
+ if (!pblocktree->WriteBlockIndex(CDiskBlockIndex(pindexNew)))
+ return state.Abort(_("Failed to write block index"));
// New best?
- if (!ConnectBestBlock())
+ if (!ConnectBestBlock(state))
return false;
if (pindexNew == pindexBest)
@@ -1967,14 +1946,15 @@ bool CBlock::AddToBlockIndex(const CDiskBlockPos &pos)
hashPrevBestCoinBase = GetTxHash(0);
}
- pblocktree->Flush();
+ if (!pblocktree->Flush())
+ return state.Abort(_("Failed to sync block index"));
uiInterface.NotifyBlocksChanged();
return true;
}
-bool FindBlockPos(CDiskBlockPos &pos, unsigned int nAddSize, unsigned int nHeight, uint64 nTime, bool fKnown = false)
+bool FindBlockPos(CValidationState &state, CDiskBlockPos &pos, unsigned int nAddSize, unsigned int nHeight, uint64 nTime, bool fKnown = false)
{
bool fUpdatedLast = false;
@@ -1990,7 +1970,7 @@ bool FindBlockPos(CDiskBlockPos &pos, unsigned int nAddSize, unsigned int nHeigh
} else {
while (infoLastBlockFile.nSize + nAddSize >= MAX_BLOCKFILE_SIZE) {
printf("Leaving block file %i: %s\n", nLastBlockFile, infoLastBlockFile.ToString().c_str());
- FlushBlockFile();
+ FlushBlockFile(true);
nLastBlockFile++;
infoLastBlockFile.SetNull();
pblocktree->ReadBlockFileInfo(nLastBlockFile, infoLastBlockFile); // check whether data for the new file somehow already exist; can fail just fine
@@ -2016,19 +1996,19 @@ bool FindBlockPos(CDiskBlockPos &pos, unsigned int nAddSize, unsigned int nHeigh
}
}
else
- return error("FindBlockPos() : out of disk space");
+ return state.Error();
}
}
if (!pblocktree->WriteBlockFileInfo(nLastBlockFile, infoLastBlockFile))
- return error("FindBlockPos() : cannot write updated block info");
+ return state.Abort(_("Failed to write file info"));
if (fUpdatedLast)
pblocktree->WriteLastBlockFile(nLastBlockFile);
return true;
}
-bool FindUndoPos(int nFile, CDiskBlockPos &pos, unsigned int nAddSize)
+bool FindUndoPos(CValidationState &state, int nFile, CDiskBlockPos &pos, unsigned int nAddSize)
{
pos.nFile = nFile;
@@ -2039,15 +2019,15 @@ bool FindUndoPos(int nFile, CDiskBlockPos &pos, unsigned int nAddSize)
pos.nPos = infoLastBlockFile.nUndoSize;
nNewSize = (infoLastBlockFile.nUndoSize += nAddSize);
if (!pblocktree->WriteBlockFileInfo(nLastBlockFile, infoLastBlockFile))
- return error("FindUndoPos() : cannot write updated block info");
+ return state.Abort(_("Failed to write block info"));
} else {
CBlockFileInfo info;
if (!pblocktree->ReadBlockFileInfo(nFile, info))
- return error("FindUndoPos() : cannot read block info");
+ return state.Abort(_("Failed to read block info"));
pos.nPos = info.nUndoSize;
nNewSize = (info.nUndoSize += nAddSize);
if (!pblocktree->WriteBlockFileInfo(nFile, info))
- return error("FindUndoPos() : cannot write updated block info");
+ return state.Abort(_("Failed to write block info"));
}
unsigned int nOldChunks = (pos.nPos + UNDOFILE_CHUNK_SIZE - 1) / UNDOFILE_CHUNK_SIZE;
@@ -2062,41 +2042,41 @@ bool FindUndoPos(int nFile, CDiskBlockPos &pos, unsigned int nAddSize)
}
}
else
- return error("FindUndoPos() : out of disk space");
+ return state.Error();
}
return true;
}
-bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot) const
+bool CBlock::CheckBlock(CValidationState &state, bool fCheckPOW, bool fCheckMerkleRoot) const
{
// These are checks that are independent of context
// that can be verified before saving an orphan block.
// Size limits
if (vtx.empty() || vtx.size() > MAX_BLOCK_SIZE || ::GetSerializeSize(*this, SER_NETWORK, PROTOCOL_VERSION) > MAX_BLOCK_SIZE)
- return DoS(100, error("CheckBlock() : size limits failed"));
+ return state.DoS(100, error("CheckBlock() : size limits failed"));
// Check proof of work matches claimed amount
if (fCheckPOW && !CheckProofOfWork(GetHash(), nBits))
- return DoS(50, error("CheckBlock() : proof of work failed"));
+ return state.DoS(50, error("CheckBlock() : proof of work failed"));
// Check timestamp
if (GetBlockTime() > GetAdjustedTime() + 2 * 60 * 60)
- return error("CheckBlock() : block timestamp too far in the future");
+ return state.Invalid(error("CheckBlock() : block timestamp too far in the future"));
// First transaction must be coinbase, the rest must not be
if (vtx.empty() || !vtx[0].IsCoinBase())
- return DoS(100, error("CheckBlock() : first tx is not coinbase"));
+ return state.DoS(100, error("CheckBlock() : first tx is not coinbase"));
for (unsigned int i = 1; i < vtx.size(); i++)
if (vtx[i].IsCoinBase())
- return DoS(100, error("CheckBlock() : more than one coinbase"));
+ return state.DoS(100, error("CheckBlock() : more than one coinbase"));
// Check transactions
BOOST_FOREACH(const CTransaction& tx, vtx)
- if (!tx.CheckTransaction())
- return DoS(tx.nDoS, error("CheckBlock() : CheckTransaction failed"));
+ if (!tx.CheckTransaction(state))
+ return error("CheckBlock() : CheckTransaction failed");
// Build the merkle tree already. We need it anyway later, and it makes the
// block cache the transaction hashes, which means they don't need to be
@@ -2110,7 +2090,7 @@ bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot) const
uniqueTx.insert(GetTxHash(i));
}
if (uniqueTx.size() != vtx.size())
- return DoS(100, error("CheckBlock() : duplicate transaction"));
+ return state.DoS(100, error("CheckBlock() : duplicate transaction"));
unsigned int nSigOps = 0;
BOOST_FOREACH(const CTransaction& tx, vtx)
@@ -2118,21 +2098,21 @@ bool CBlock::CheckBlock(bool fCheckPOW, bool fCheckMerkleRoot) const
nSigOps += tx.GetLegacySigOpCount();
}
if (nSigOps > MAX_BLOCK_SIGOPS)
- return DoS(100, error("CheckBlock() : out-of-bounds SigOpCount"));
+ return state.DoS(100, error("CheckBlock() : out-of-bounds SigOpCount"));
// Check merkle root
if (fCheckMerkleRoot && hashMerkleRoot != BuildMerkleTree())
- return DoS(100, error("CheckBlock() : hashMerkleRoot mismatch"));
+ return state.DoS(100, error("CheckBlock() : hashMerkleRoot mismatch"));
return true;
}
-bool CBlock::AcceptBlock(CDiskBlockPos *dbp)
+bool CBlock::AcceptBlock(CValidationState &state, CDiskBlockPos *dbp)
{
// Check for duplicate
uint256 hash = GetHash();
if (mapBlockIndex.count(hash))
- return error("AcceptBlock() : block already in mapBlockIndex");
+ return state.Invalid(error("AcceptBlock() : block already in mapBlockIndex"));
// Get prev block index
CBlockIndex* pindexPrev = NULL;
@@ -2140,26 +2120,26 @@ bool CBlock::AcceptBlock(CDiskBlockPos *dbp)
if (hash != hashGenesisBlock) {
map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashPrevBlock);
if (mi == mapBlockIndex.end())
- return DoS(10, error("AcceptBlock() : prev block not found"));
+ return state.DoS(10, error("AcceptBlock() : prev block not found"));
pindexPrev = (*mi).second;
nHeight = pindexPrev->nHeight+1;
// Check proof of work
if (nBits != GetNextWorkRequired(pindexPrev, this))
- return DoS(100, error("AcceptBlock() : incorrect proof of work"));
+ return state.DoS(100, error("AcceptBlock() : incorrect proof of work"));
// Check timestamp against prev
if (GetBlockTime() <= pindexPrev->GetMedianTimePast())
- return error("AcceptBlock() : block's timestamp is too early");
+ return state.Invalid(error("AcceptBlock() : block's timestamp is too early"));
// Check that all transactions are finalized
BOOST_FOREACH(const CTransaction& tx, vtx)
if (!tx.IsFinal(nHeight, GetBlockTime()))
- return DoS(10, error("AcceptBlock() : contains a non-final transaction"));
+ return state.DoS(10, error("AcceptBlock() : contains a non-final transaction"));
// Check that the block chain matches the known block chain up to a checkpoint
if (!Checkpoints::CheckBlock(nHeight, hash))
- return DoS(100, error("AcceptBlock() : rejected by checkpoint lock-in at %d", nHeight));
+ return state.DoS(100, error("AcceptBlock() : rejected by checkpoint lock-in at %d", nHeight));
// Reject block.nVersion=1 blocks when 95% (75% on testnet) of the network has upgraded:
if (nVersion < 2)
@@ -2167,7 +2147,7 @@ bool CBlock::AcceptBlock(CDiskBlockPos *dbp)
if ((!fTestNet && CBlockIndex::IsSuperMajority(2, pindexPrev, 950, 1000)) ||
(fTestNet && CBlockIndex::IsSuperMajority(2, pindexPrev, 75, 100)))
{
- return error("AcceptBlock() : rejected nVersion=1 block");
+ return state.Invalid(error("AcceptBlock() : rejected nVersion=1 block"));
}
}
// Enforce block.nVersion=2 rule that the coinbase starts with serialized block height
@@ -2179,23 +2159,27 @@ bool CBlock::AcceptBlock(CDiskBlockPos *dbp)
{
CScript expect = CScript() << nHeight;
if (!std::equal(expect.begin(), expect.end(), vtx[0].vin[0].scriptSig.begin()))
- return DoS(100, error("AcceptBlock() : block height mismatch in coinbase"));
+ return state.DoS(100, error("AcceptBlock() : block height mismatch in coinbase"));
}
}
}
// Write block to history file
- unsigned int nBlockSize = ::GetSerializeSize(*this, SER_DISK, CLIENT_VERSION);
- CDiskBlockPos blockPos;
- if (dbp != NULL)
- blockPos = *dbp;
- if (!FindBlockPos(blockPos, nBlockSize+8, nHeight, nTime, dbp != NULL))
- return error("AcceptBlock() : FindBlockPos failed");
- if (dbp == NULL)
- if (!WriteToDisk(blockPos))
- return error("AcceptBlock() : WriteToDisk failed");
- if (!AddToBlockIndex(blockPos))
- return error("AcceptBlock() : AddToBlockIndex failed");
+ try {
+ unsigned int nBlockSize = ::GetSerializeSize(*this, SER_DISK, CLIENT_VERSION);
+ CDiskBlockPos blockPos;
+ if (dbp != NULL)
+ blockPos = *dbp;
+ if (!FindBlockPos(state, blockPos, nBlockSize+8, nHeight, nTime, dbp != NULL))
+ return error("AcceptBlock() : FindBlockPos failed");
+ if (dbp == NULL)
+ if (!WriteToDisk(blockPos))
+ return state.Abort(_("Failed to write block"));
+ if (!AddToBlockIndex(state, blockPos))
+ return error("AcceptBlock() : AddToBlockIndex failed");
+ } catch(std::runtime_error &e) {
+ return state.Abort(_("System error: ") + e.what());
+ }
// Relay inventory, but don't relay old inventory during initial block download
int nBlockEstimate = Checkpoints::GetTotalBlocksEstimate();
@@ -2222,17 +2206,17 @@ bool CBlockIndex::IsSuperMajority(int minVersion, const CBlockIndex* pstart, uns
return (nFound >= nRequired);
}
-bool ProcessBlock(CNode* pfrom, CBlock* pblock, CDiskBlockPos *dbp)
+bool ProcessBlock(CValidationState &state, CNode* pfrom, CBlock* pblock, CDiskBlockPos *dbp)
{
// Check for duplicate
uint256 hash = pblock->GetHash();
if (mapBlockIndex.count(hash))
- return error("ProcessBlock() : already have block %d %s", mapBlockIndex[hash]->nHeight, BlockHashStr(hash).c_str());
+ return state.Invalid(error("ProcessBlock() : already have block %d %s", mapBlockIndex[hash]->nHeight, BlockHashStr(hash).c_str()));
if (mapOrphanBlocks.count(hash))
- return error("ProcessBlock() : already have block (orphan) %s", BlockHashStr(hash).c_str());
+ return state.Invalid(error("ProcessBlock() : already have block (orphan) %s", BlockHashStr(hash).c_str()));
// Preliminary checks
- if (!pblock->CheckBlock())
+ if (!pblock->CheckBlock(state))
return error("ProcessBlock() : CheckBlock FAILED");
CBlockIndex* pcheckpoint = Checkpoints::GetLastCheckpoint(mapBlockIndex);
@@ -2242,9 +2226,7 @@ bool ProcessBlock(CNode* pfrom, CBlock* pblock, CDiskBlockPos *dbp)
int64 deltaTime = pblock->GetBlockTime() - pcheckpoint->nTime;
if (deltaTime < 0)
{
- if (pfrom)
- pfrom->Misbehaving(100);
- return error("ProcessBlock() : block with timestamp before last checkpoint");
+ return state.DoS(100, error("ProcessBlock() : block with timestamp before last checkpoint"));
}
CBigNum bnNewBlock;
bnNewBlock.SetCompact(pblock->nBits);
@@ -2252,9 +2234,7 @@ bool ProcessBlock(CNode* pfrom, CBlock* pblock, CDiskBlockPos *dbp)
bnRequired.SetCompact(ComputeMinWork(pcheckpoint->nBits, deltaTime));
if (bnNewBlock > bnRequired)
{
- if (pfrom)
- pfrom->Misbehaving(100);
- return error("ProcessBlock() : block with too little proof-of-work");
+ return state.DoS(100, error("ProcessBlock() : block with too little proof-of-work"));
}
}
@@ -2277,7 +2257,7 @@ bool ProcessBlock(CNode* pfrom, CBlock* pblock, CDiskBlockPos *dbp)
}
// Store to disk
- if (!pblock->AcceptBlock(dbp))
+ if (!pblock->AcceptBlock(state, dbp))
return error("ProcessBlock() : AcceptBlock FAILED");
// Recursively process any orphan blocks that depended on this one
@@ -2291,7 +2271,9 @@ bool ProcessBlock(CNode* pfrom, CBlock* pblock, CDiskBlockPos *dbp)
++mi)
{
CBlock* pblockOrphan = (*mi).second;
- if (pblockOrphan->AcceptBlock())
+ // Use a dummy CValidationState so someone can't setup nodes to counter-DoS based on orphan resolution (that is, feeding people an invalid block based on LegitBlockX in order to get anyone relaying LegitBlockX banned)
+ CValidationState stateDummy;
+ if (pblockOrphan->AcceptBlock(stateDummy))
vWorkQueue.push_back(pblockOrphan->GetHash());
mapOrphanBlocks.erase(pblockOrphan->GetHash());
delete pblockOrphan;
@@ -2463,6 +2445,14 @@ uint256 CPartialMerkleTree::ExtractMatches(std::vector<uint256> &vMatch) {
+bool AbortNode(const std::string &strMessage) {
+ fRequestShutdown = true;
+ strMiscWarning = strMessage;
+ printf("*** %s\n", strMessage.c_str());
+ uiInterface.ThreadSafeMessageBox(strMessage, "", CClientUIInterface::MSG_ERROR | CClientUIInterface::MODAL);
+ StartShutdown();
+ return false;
+}
bool CheckDiskSpace(uint64 nAdditionalBytes)
{
@@ -2470,15 +2460,8 @@ bool CheckDiskSpace(uint64 nAdditionalBytes)
// Check for nMinDiskSpace bytes (currently 50MB)
if (nFreeBytesAvailable < nMinDiskSpace + nAdditionalBytes)
- {
- fShutdown = true;
- string strMessage = _("Error: Disk space is low!");
- strMiscWarning = strMessage;
- printf("*** %s\n", strMessage.c_str());
- uiInterface.ThreadSafeMessageBox(strMessage, "", CClientUIInterface::MSG_ERROR);
- StartShutdown();
- return false;
- }
+ return AbortNode(_("Error: Disk space is low!"));
+
return true;
}
@@ -2609,7 +2592,7 @@ bool VerifyDB() {
// Verify blocks in the best chain
int nCheckLevel = GetArg("-checklevel", 3);
- int nCheckDepth = GetArg( "-checkblocks", 2500);
+ int nCheckDepth = GetArg( "-checkblocks", 288);
if (nCheckDepth == 0)
nCheckDepth = 1000000000; // suffices until the year 19000
if (nCheckDepth > nBestHeight)
@@ -2620,6 +2603,7 @@ bool VerifyDB() {
CBlockIndex* pindexState = pindexBest;
CBlockIndex* pindexFailure = NULL;
int nGoodTransactions = 0;
+ CValidationState state;
for (CBlockIndex* pindex = pindexBest; pindex && pindex->pprev; pindex = pindex->pprev)
{
if (fRequestShutdown || pindex->nHeight < nBestHeight-nCheckDepth)
@@ -2629,7 +2613,7 @@ bool VerifyDB() {
if (!block.ReadFromDisk(pindex))
return error("VerifyDB() : *** block.ReadFromDisk failed at %d, hash=%s", pindex->nHeight, pindex->GetBlockHash().ToString().c_str());
// check level 1: verify block validity
- if (nCheckLevel >= 1 && !block.CheckBlock())
+ if (nCheckLevel >= 1 && !block.CheckBlock(state))
return error("VerifyDB() : *** found bad block at %d, hash=%s\n", pindex->nHeight, pindex->GetBlockHash().ToString().c_str());
// check level 2: verify undo validity
if (nCheckLevel >= 2 && pindex) {
@@ -2643,7 +2627,7 @@ bool VerifyDB() {
// check level 3: check for inconsistencies during memory-only disconnect of tip blocks
if (nCheckLevel >= 3 && pindex == pindexState && (coins.GetCacheSize() + pcoinsTip->GetCacheSize()) <= 2*nCoinCacheSize + 32000) {
bool fClean = true;
- if (!block.DisconnectBlock(pindex, coins, &fClean))
+ if (!block.DisconnectBlock(state, pindex, coins, &fClean))
return error("VerifyDB() : *** irrecoverable inconsistency in block data at %d, hash=%s", pindex->nHeight, pindex->GetBlockHash().ToString().c_str());
pindexState = pindex->pprev;
if (!fClean) {
@@ -2664,7 +2648,7 @@ bool VerifyDB() {
CBlock block;
if (!block.ReadFromDisk(pindex))
return error("VerifyDB() : *** block.ReadFromDisk failed at %d, hash=%s", pindex->nHeight, pindex->GetBlockHash().ToString().c_str());
- if (!block.ConnectBlock(pindex, coins))
+ if (!block.ConnectBlock(state, pindex, coins))
return error("VerifyDB() : *** found unconnectable block at %d, hash=%s", pindex->nHeight, pindex->GetBlockHash().ToString().c_str());
}
}
@@ -2674,6 +2658,18 @@ bool VerifyDB() {
return true;
}
+void UnloadBlockIndex()
+{
+ mapBlockIndex.clear();
+ setBlockIndexValid.clear();
+ pindexGenesisBlock = NULL;
+ nBestHeight = 0;
+ bnBestChainWork = 0;
+ bnBestInvalidWork = 0;
+ hashBestChain = 0;
+ pindexBest = NULL;
+}
+
bool LoadBlockIndex()
{
if (fTestNet)
@@ -2691,18 +2687,22 @@ bool LoadBlockIndex()
if (!fReindex && !LoadBlockIndexDB())
return false;
- //
- // Init with genesis block
- //
- if (mapBlockIndex.empty())
- {
- fTxIndex = GetBoolArg("-txindex", false);
- pblocktree->WriteFlag("txindex", fTxIndex);
- printf("Initializing databases...\n");
+ return true;
+}
- if (fReindex)
- return true;
+bool InitBlockIndex() {
+ // Check whether we're already initialized
+ if (pindexGenesisBlock != NULL)
+ return true;
+
+ // Use the provided setting for -txindex in the new database
+ fTxIndex = GetBoolArg("-txindex", false);
+ pblocktree->WriteFlag("txindex", fTxIndex);
+ printf("Initializing databases...\n");
+
+ // Only add the genesis block if not reindexing (in which case we reuse the one already on disk)
+ if (!fReindex) {
// Genesis Block:
// CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
// CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
@@ -2743,14 +2743,19 @@ bool LoadBlockIndex()
assert(hash == hashGenesisBlock);
// Start new block file
- unsigned int nBlockSize = ::GetSerializeSize(block, SER_DISK, CLIENT_VERSION);
- CDiskBlockPos blockPos;
- if (!FindBlockPos(blockPos, nBlockSize+8, 0, block.nTime))
- return error("AcceptBlock() : FindBlockPos failed");
- if (!block.WriteToDisk(blockPos))
- return error("LoadBlockIndex() : writing genesis block to disk failed");
- if (!block.AddToBlockIndex(blockPos))
- return error("LoadBlockIndex() : genesis block not accepted");
+ try {
+ unsigned int nBlockSize = ::GetSerializeSize(block, SER_DISK, CLIENT_VERSION);
+ CDiskBlockPos blockPos;
+ CValidationState state;
+ if (!FindBlockPos(state, blockPos, nBlockSize+8, 0, block.nTime))
+ return error("AcceptBlock() : FindBlockPos failed");
+ if (!block.WriteToDisk(blockPos))
+ return error("LoadBlockIndex() : writing genesis block to disk failed");
+ if (!block.AddToBlockIndex(state, blockPos))
+ return error("LoadBlockIndex() : genesis block not accepted");
+ } catch(std::runtime_error &e) {
+ return error("LoadBlockIndex() : failed to initialize block database: %s", e.what());
+ }
}
return true;
@@ -2833,7 +2838,7 @@ bool LoadExternalBlockFile(FILE* fileIn, CDiskBlockPos *dbp)
int64 nStart = GetTimeMillis();
int nLoaded = 0;
- {
+ try {
CBufferedFile blkdat(fileIn, 2*MAX_BLOCK_SIZE, MAX_BLOCK_SIZE+8, SER_DISK, CLIENT_VERSION);
uint64 nStartByte = 0;
if (dbp) {
@@ -2879,14 +2884,19 @@ bool LoadExternalBlockFile(FILE* fileIn, CDiskBlockPos *dbp)
LOCK(cs_main);
if (dbp)
dbp->nPos = nBlockPos;
- if (ProcessBlock(NULL, &block, dbp))
+ CValidationState state;
+ if (ProcessBlock(state, NULL, &block, dbp))
nLoaded++;
+ if (state.IsError())
+ break;
}
} catch (std::exception &e) {
printf("%s() : Deserialize or I/O error caught during load\n", __PRETTY_FUNCTION__);
}
}
fclose(fileIn);
+ } catch(std::runtime_error &e) {
+ AbortNode(_("Error: system error: ") + e.what());
}
if (nLoaded > 0)
printf("Loaded %i blocks from external file in %"PRI64d"ms\n", nLoaded, GetTimeMillis() - nStart);
@@ -3456,7 +3466,8 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
pfrom->AddInventoryKnown(inv);
bool fMissingInputs = false;
- if (tx.AcceptToMemoryPool(true, &fMissingInputs))
+ CValidationState state;
+ if (tx.AcceptToMemoryPool(state, true, true, &fMissingInputs))
{
RelayTransaction(tx, inv.hash, vMsg);
mapAlreadyAskedFor.erase(inv);
@@ -3476,8 +3487,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
CDataStream(vMsg) >> tx;
CInv inv(MSG_TX, tx.GetHash());
bool fMissingInputs2 = false;
+ // Use a dummy CValidationState so someone can't setup nodes to counter-DoS based on orphan resolution (that is, feeding people an invalid transaction based on LegitTxX in order to get anyone relaying LegitTxX banned)
+ CValidationState stateDummy;
- if (tx.AcceptToMemoryPool(true, &fMissingInputs2))
+ if (tx.AcceptToMemoryPool(stateDummy, true, true, &fMissingInputs2))
{
printf(" accepted orphan tx %s\n", inv.hash.ToString().substr(0,10).c_str());
RelayTransaction(tx, inv.hash, vMsg);
@@ -3487,9 +3500,9 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
}
else if (!fMissingInputs2)
{
- // invalid orphan
+ // invalid or too-little-fee orphan
vEraseQueue.push_back(inv.hash);
- printf(" removed invalid orphan tx %s\n", inv.hash.ToString().substr(0,10).c_str());
+ printf(" removed orphan tx %s\n", inv.hash.ToString().substr(0,10).c_str());
}
}
}
@@ -3506,7 +3519,9 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
if (nEvicted > 0)
printf("mapOrphan overflow, removed %u tx\n", nEvicted);
}
- if (tx.nDoS) pfrom->Misbehaving(tx.nDoS);
+ int nDoS;
+ if (state.IsInvalid(nDoS))
+ pfrom->Misbehaving(nDoS);
}
@@ -3521,9 +3536,12 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv)
CInv inv(MSG_BLOCK, block.GetHash());
pfrom->AddInventoryKnown(inv);
- if (ProcessBlock(pfrom, &block))
+ CValidationState state;
+ if (ProcessBlock(state, pfrom, &block))
mapAlreadyAskedFor.erase(inv);
- if (block.nDoS) pfrom->Misbehaving(block.nDoS);
+ int nDoS;
+ if (state.IsInvalid(nDoS))
+ pfrom->Misbehaving(nDoS);
}
@@ -3811,7 +3829,12 @@ bool SendMessages(CNode* pto, bool fSendTrickle)
}
// Resend wallet transactions that haven't gotten in a block yet
- ResendWalletTransactions();
+ // Except during reindex, importing and IBD, when old wallet
+ // transactions become unconfirmed and spams other nodes.
+ if (!fReindex && !fImporting && !IsInitialBlockDownload())
+ {
+ ResendWalletTransactions();
+ }
// Address refresh broadcast
static int64 nLastRebroadcast;
@@ -4273,12 +4296,13 @@ CBlockTemplate* CreateNewBlock(CReserveKey& reservekey)
if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS)
continue;
- if (!tx.CheckInputs(viewTemp, true, SCRIPT_VERIFY_P2SH))
+ CValidationState state;
+ if (!tx.CheckInputs(state, viewTemp, true, SCRIPT_VERIFY_P2SH))
continue;
CTxUndo txundo;
uint256 hash = tx.GetHash();
- if (!tx.UpdateCoins(viewTemp, txundo, pindexPrev->nHeight+1, hash))
+ if (!tx.UpdateCoins(state, viewTemp, txundo, pindexPrev->nHeight+1, hash))
continue;
// push changes from the second layer cache to the first one
@@ -4336,7 +4360,8 @@ CBlockTemplate* CreateNewBlock(CReserveKey& reservekey)
indexDummy.pprev = pindexPrev;
indexDummy.nHeight = pindexPrev->nHeight + 1;
CCoinsViewCache viewNew(*pcoinsTip, true);
- if (!pblock->ConnectBlock(&indexDummy, viewNew, true))
+ CValidationState state;
+ if (!pblock->ConnectBlock(state, &indexDummy, viewNew, true))
throw std::runtime_error("CreateNewBlock() : ConnectBlock failed");
}
@@ -4438,7 +4463,8 @@ bool CheckWork(CBlock* pblock, CWallet& wallet, CReserveKey& reservekey)
}
// Process this block the same as if we had received it from another node
- if (!ProcessBlock(NULL, pblock))
+ CValidationState state;
+ if (!ProcessBlock(state, NULL, pblock))
return error("BitcoinMiner : ProcessBlock, block not accepted");
}
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-18 00:04:38 +0000