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-rw-r--r--src/main.cpp149
1 files changed, 87 insertions, 62 deletions
diff --git a/src/main.cpp b/src/main.cpp
index e9a5f7efd..6c4cfe75a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -61,6 +61,7 @@ bool fCheckBlockIndex = false;
bool fCheckpointsEnabled = true;
size_t nCoinCacheUsage = 5000 * 300;
uint64_t nPruneTarget = 0;
+bool fAlerts = DEFAULT_ALERTS;
/** Fees smaller than this (in satoshi) are considered zero fee (for relaying and mining) */
CFeeRate minRelayTxFee = CFeeRate(1000);
@@ -433,13 +434,14 @@ void FindNextBlocksToDownload(NodeId nodeid, unsigned int count, std::vector<CBl
// Iterate over those blocks in vToFetch (in forward direction), adding the ones that
// are not yet downloaded and not in flight to vBlocks. In the mean time, update
- // pindexLastCommonBlock as long as all ancestors are already downloaded.
+ // pindexLastCommonBlock as long as all ancestors are already downloaded, or if it's
+ // already part of our chain (and therefore don't need it even if pruned).
BOOST_FOREACH(CBlockIndex* pindex, vToFetch) {
if (!pindex->IsValid(BLOCK_VALID_TREE)) {
// We consider the chain that this peer is on invalid.
return;
}
- if (pindex->nStatus & BLOCK_HAVE_DATA) {
+ if (pindex->nStatus & BLOCK_HAVE_DATA || chainActive.Contains(pindex)) {
if (pindex->nChainTx)
state->pindexLastCommonBlock = pindex;
} else if (mapBlocksInFlight.count(pindex->GetBlockHash()) == 0) {
@@ -1395,22 +1397,21 @@ bool CScriptCheck::operator()() {
return true;
}
-bool CheckInputs(const CTransaction& tx, CValidationState &state, const CCoinsViewCache &inputs, bool fScriptChecks, unsigned int flags, bool cacheStore, std::vector<CScriptCheck> *pvChecks)
+int GetSpendHeight(const CCoinsViewCache& inputs)
{
- if (!tx.IsCoinBase())
- {
- if (pvChecks)
- pvChecks->reserve(tx.vin.size());
+ LOCK(cs_main);
+ CBlockIndex* pindexPrev = mapBlockIndex.find(inputs.GetBestBlock())->second;
+ return pindexPrev->nHeight + 1;
+}
+namespace Consensus {
+bool CheckTxInputs(const CTransaction& tx, CValidationState& state, const CCoinsViewCache& inputs, int nSpendHeight)
+{
// 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 (!inputs.HaveInputs(tx))
return state.Invalid(error("CheckInputs(): %s inputs unavailable", tx.GetHash().ToString()));
- // While checking, GetBestBlock() refers to the parent block.
- // This is also true for mempool checks.
- CBlockIndex *pindexPrev = mapBlockIndex.find(inputs.GetBestBlock())->second;
- int nSpendHeight = pindexPrev->nHeight + 1;
CAmount nValueIn = 0;
CAmount nFees = 0;
for (unsigned int i = 0; i < tx.vin.size(); i++)
@@ -1449,6 +1450,19 @@ bool CheckInputs(const CTransaction& tx, CValidationState &state, const CCoinsVi
if (!MoneyRange(nFees))
return state.DoS(100, error("CheckInputs(): nFees out of range"),
REJECT_INVALID, "bad-txns-fee-outofrange");
+ return true;
+}
+}// namespace Consensus
+
+bool CheckInputs(const CTransaction& tx, CValidationState &state, const CCoinsViewCache &inputs, bool fScriptChecks, unsigned int flags, bool cacheStore, std::vector<CScriptCheck> *pvChecks)
+{
+ if (!tx.IsCoinBase())
+ {
+ if (!Consensus::CheckTxInputs(tx, state, inputs, GetSpendHeight(inputs)))
+ return false;
+
+ if (pvChecks)
+ pvChecks->reserve(tx.vin.size());
// The first loop above does all the inexpensive checks.
// Only if ALL inputs pass do we perform expensive ECDSA signature checks.
@@ -1711,9 +1725,10 @@ void ThreadScriptCheck() {
// we're being fed a bad chain (blocks being generated much
// too slowly or too quickly).
//
-void PartitionCheck(bool (*initialDownloadCheck)(), CCriticalSection& cs, const CChain& chain, int64_t nPowTargetSpacing)
+void PartitionCheck(bool (*initialDownloadCheck)(), CCriticalSection& cs, const CBlockIndex *const &bestHeader,
+ int64_t nPowTargetSpacing)
{
- if (initialDownloadCheck()) return;
+ if (bestHeader == NULL || initialDownloadCheck()) return;
static int64_t lastAlertTime = 0;
int64_t now = GetAdjustedTime();
@@ -1729,10 +1744,13 @@ void PartitionCheck(bool (*initialDownloadCheck)(), CCriticalSection& cs, const
int64_t startTime = GetAdjustedTime()-SPAN_SECONDS;
LOCK(cs);
- int h = chain.Height();
- while (h > 0 && chain[h]->GetBlockTime() >= startTime)
- --h;
- int nBlocks = chain.Height()-h;
+ const CBlockIndex* i = bestHeader;
+ int nBlocks = 0;
+ while (i->GetBlockTime() >= startTime) {
+ ++nBlocks;
+ i = i->pprev;
+ if (i == NULL) return; // Ran out of chain, we must not be fully sync'ed
+ }
// How likely is it to find that many by chance?
double p = boost::math::pdf(poisson, nBlocks);
@@ -1790,7 +1808,14 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
return true;
}
- bool fScriptChecks = (!fCheckpointsEnabled || pindex->nHeight >= Checkpoints::GetTotalBlocksEstimate(chainparams.Checkpoints()));
+ bool fScriptChecks = true;
+ if (fCheckpointsEnabled) {
+ CBlockIndex *pindexLastCheckpoint = Checkpoints::GetLastCheckpoint(chainparams.Checkpoints());
+ if (pindexLastCheckpoint && pindexLastCheckpoint->GetAncestor(pindex->nHeight) == pindex) {
+ // This block is an ancestor of a checkpoint: disable script checks
+ fScriptChecks = false;
+ }
+ }
// Do not allow blocks that contain transactions which 'overwrite' older transactions,
// unless those are already completely spent.
@@ -2712,18 +2737,23 @@ bool CheckBlock(const CBlock& block, CValidationState& state, bool fCheckPOW, bo
return true;
}
-bool ContextualCheckBlockHeader(const CBlockHeader& block, CValidationState& state, CBlockIndex * const pindexPrev)
+static bool CheckIndexAgainstCheckpoint(const CBlockIndex* pindexPrev, CValidationState& state, const CChainParams& chainparams, const uint256& hash)
{
- const CChainParams& chainParams = Params();
- const Consensus::Params& consensusParams = chainParams.GetConsensus();
- uint256 hash = block.GetHash();
- if (hash == consensusParams.hashGenesisBlock)
+ if (*pindexPrev->phashBlock == chainparams.GetConsensus().hashGenesisBlock)
return true;
- assert(pindexPrev);
-
int nHeight = pindexPrev->nHeight+1;
+ // Don't accept any forks from the main chain prior to last checkpoint
+ CBlockIndex* pcheckpoint = Checkpoints::GetLastCheckpoint(chainparams.Checkpoints());
+ if (pcheckpoint && nHeight < pcheckpoint->nHeight)
+ return state.DoS(100, error("%s: forked chain older than last checkpoint (height %d)", __func__, nHeight));
+ return true;
+}
+
+bool ContextualCheckBlockHeader(const CBlockHeader& block, CValidationState& state, CBlockIndex * const pindexPrev)
+{
+ const Consensus::Params& consensusParams = Params().GetConsensus();
// Check proof of work
if (block.nBits != GetNextWorkRequired(pindexPrev, &block, consensusParams))
return state.DoS(100, error("%s: incorrect proof of work", __func__),
@@ -2734,19 +2764,6 @@ bool ContextualCheckBlockHeader(const CBlockHeader& block, CValidationState& sta
return state.Invalid(error("%s: block's timestamp is too early", __func__),
REJECT_INVALID, "time-too-old");
- if(fCheckpointsEnabled)
- {
- // Check that the block chain matches the known block chain up to a checkpoint
- if (!Checkpoints::CheckBlock(chainParams.Checkpoints(), nHeight, hash))
- return state.DoS(100, error("%s: rejected by checkpoint lock-in at %d", __func__, nHeight),
- REJECT_CHECKPOINT, "checkpoint mismatch");
-
- // Don't accept any forks from the main chain prior to last checkpoint
- CBlockIndex* pcheckpoint = Checkpoints::GetLastCheckpoint(chainParams.Checkpoints());
- if (pcheckpoint && nHeight < pcheckpoint->nHeight)
- return state.DoS(100, error("%s: forked chain older than last checkpoint (height %d)", __func__, nHeight));
- }
-
// Reject block.nVersion=1 blocks when 95% (75% on testnet) of the network has upgraded:
if (block.nVersion < 2 && IsSuperMajority(2, pindexPrev, consensusParams.nMajorityRejectBlockOutdated, consensusParams))
return state.Invalid(error("%s: rejected nVersion=1 block", __func__),
@@ -2793,33 +2810,37 @@ bool AcceptBlockHeader(const CBlockHeader& block, CValidationState& state, CBloc
uint256 hash = block.GetHash();
BlockMap::iterator miSelf = mapBlockIndex.find(hash);
CBlockIndex *pindex = NULL;
- if (miSelf != mapBlockIndex.end()) {
- // Block header is already known.
- pindex = miSelf->second;
- if (ppindex)
- *ppindex = pindex;
- if (pindex->nStatus & BLOCK_FAILED_MASK)
- return state.Invalid(error("%s: block is marked invalid", __func__), 0, "duplicate");
- return true;
- }
+ if (hash != chainparams.GetConsensus().hashGenesisBlock) {
- if (!CheckBlockHeader(block, state))
- return false;
+ if (miSelf != mapBlockIndex.end()) {
+ // Block header is already known.
+ pindex = miSelf->second;
+ if (ppindex)
+ *ppindex = pindex;
+ if (pindex->nStatus & BLOCK_FAILED_MASK)
+ return state.Invalid(error("%s: block is marked invalid", __func__), 0, "duplicate");
+ return true;
+ }
- // Get prev block index
- CBlockIndex* pindexPrev = NULL;
- if (hash != chainparams.GetConsensus().hashGenesisBlock) {
+ if (!CheckBlockHeader(block, state))
+ return false;
+
+ // Get prev block index
+ CBlockIndex* pindexPrev = NULL;
BlockMap::iterator mi = mapBlockIndex.find(block.hashPrevBlock);
if (mi == mapBlockIndex.end())
return state.DoS(10, error("%s: prev block not found", __func__), 0, "bad-prevblk");
pindexPrev = (*mi).second;
if (pindexPrev->nStatus & BLOCK_FAILED_MASK)
return state.DoS(100, error("%s: prev block invalid", __func__), REJECT_INVALID, "bad-prevblk");
- }
- if (!ContextualCheckBlockHeader(block, state, pindexPrev))
- return false;
+ assert(pindexPrev);
+ if (fCheckpointsEnabled && !CheckIndexAgainstCheckpoint(pindexPrev, state, chainparams, hash))
+ return error("%s: CheckIndexAgainstCheckpoint(): %s", __func__, state.GetRejectReason().c_str());
+ if (!ContextualCheckBlockHeader(block, state, pindexPrev))
+ return false;
+ }
if (pindex == NULL)
pindex = AddToBlockIndex(block);
@@ -2931,8 +2952,11 @@ bool ProcessNewBlock(CValidationState &state, CNode* pfrom, CBlock* pblock, bool
bool TestBlockValidity(CValidationState &state, const CBlock& block, CBlockIndex * const pindexPrev, bool fCheckPOW, bool fCheckMerkleRoot)
{
+ const CChainParams& chainparams = Params();
AssertLockHeld(cs_main);
- assert(pindexPrev == chainActive.Tip());
+ assert(pindexPrev && pindexPrev == chainActive.Tip());
+ if (fCheckpointsEnabled && !CheckIndexAgainstCheckpoint(pindexPrev, state, chainparams, block.GetHash()))
+ return error("%s: CheckIndexAgainstCheckpoint(): %s", __func__, state.GetRejectReason().c_str());
CCoinsViewCache viewNew(pcoinsTip);
CBlockIndex indexDummy(block);
@@ -3040,9 +3064,9 @@ void FindFilesToPrune(std::set<int>& setFilesToPrune)
if (nCurrentUsage + nBuffer < nPruneTarget) // are we below our target?
break;
- // don't prune files that could have a block within MIN_BLOCKS_TO_KEEP of the main chain's tip
+ // don't prune files that could have a block within MIN_BLOCKS_TO_KEEP of the main chain's tip but keep scanning
if (vinfoBlockFile[fileNumber].nHeightLast > nLastBlockWeCanPrune)
- break;
+ continue;
PruneOneBlockFile(fileNumber);
// Queue up the files for removal
@@ -4320,7 +4344,6 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
mempool.check(pcoinsTip);
RelayTransaction(tx);
vWorkQueue.push_back(inv.hash);
- vEraseQueue.push_back(inv.hash);
LogPrint("mempool", "AcceptToMemoryPool: peer=%d %s: accepted %s (poolsz %u)\n",
pfrom->id, pfrom->cleanSubVer,
@@ -4347,7 +4370,6 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
// anyone relaying LegitTxX banned)
CValidationState stateDummy;
- vEraseQueue.push_back(orphanHash);
if (setMisbehaving.count(fromPeer))
continue;
@@ -4356,6 +4378,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
LogPrint("mempool", " accepted orphan tx %s\n", orphanHash.ToString());
RelayTransaction(orphanTx);
vWorkQueue.push_back(orphanHash);
+ vEraseQueue.push_back(orphanHash);
}
else if (!fMissingInputs2)
{
@@ -4367,8 +4390,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
setMisbehaving.insert(fromPeer);
LogPrint("mempool", " invalid orphan tx %s\n", orphanHash.ToString());
}
- // too-little-fee orphan
+ // Has inputs but not accepted to mempool
+ // Probably non-standard or insufficient fee/priority
LogPrint("mempool", " removed orphan tx %s\n", orphanHash.ToString());
+ vEraseQueue.push_back(orphanHash);
}
mempool.check(pcoinsTip);
}
@@ -4604,7 +4629,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
}
- else if (strCommand == "alert")
+ else if (fAlerts && strCommand == "alert")
{
CAlert alert;
vRecv >> alert;
generated by cgit v1.2.3 (git 2.25.1) at 2026-04-26 01:16:19 +0000