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Do not store witness txn in rejection cache

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This commit is contained in:
Pieter Wuille 2016-08-16 17:38:57 +02:00
parent e82fb872ff
commit 34521e4d7d
1 changed files with 12 additions and 8 deletions
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20
src/main.cpp
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@ -1501,9 +1501,9 @@ bool AcceptToMemoryPoolWorker(CTxMemPool& pool, CValidationState& state, const C
// SCRIPT_VERIFY_CLEANSTACK requires SCRIPT_VERIFY_WITNESS, so we
// need to turn both off, and compare against just turning off CLEANSTACK
// to see if the failure is specifically due to witness validation.
if (CheckInputs(tx, state, view, true, scriptVerifyFlags & ~(SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_CLEANSTACK), true, txdata) &&
if (tx.wit.IsNull() && CheckInputs(tx, state, view, true, scriptVerifyFlags & ~(SCRIPT_VERIFY_WITNESS | SCRIPT_VERIFY_CLEANSTACK), true, txdata) &&
!CheckInputs(tx, state, view, true, scriptVerifyFlags & ~SCRIPT_VERIFY_CLEANSTACK, true, txdata)) {
// Only the witness is wrong, so the transaction itself may be fine.
// Only the witness is missing, so the transaction itself may be fine.
state.SetCorruptionPossible();
}
return false;
@ -5493,7 +5493,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
else if (!fMissingInputs2)
{
int nDos = 0;
if (stateDummy.IsInvalid(nDos) && nDos > 0 && (!state.CorruptionPossible() || State(fromPeer)->fHaveWitness))
if (stateDummy.IsInvalid(nDos) && nDos > 0)
{
// Punish peer that gave us an invalid orphan tx
Misbehaving(fromPeer, nDos);
@ -5504,7 +5504,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
// Probably non-standard or insufficient fee/priority
LogPrint("mempool", " removed orphan tx %s\n", orphanHash.ToString());
vEraseQueue.push_back(orphanHash);
if (!stateDummy.CorruptionPossible()) {
if (orphanTx.wit.IsNull() && !stateDummy.CorruptionPossible()) {
// Do not use rejection cache for witness transactions or
// witness-stripped transactions, as they can have been malleated.
// See https://github.com/bitcoin/bitcoin/issues/8279 for details.
assert(recentRejects);
recentRejects->insert(orphanHash);
}
@ -5542,7 +5545,10 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
LogPrint("mempool", "not keeping orphan with rejected parents %s\n",tx.GetHash().ToString());
}
} else {
if (!state.CorruptionPossible()) {
if (tx.wit.IsNull() && !state.CorruptionPossible()) {
// Do not use rejection cache for witness transactions or
// witness-stripped transactions, as they can have been malleated.
// See https://github.com/bitcoin/bitcoin/issues/8279 for details.
assert(recentRejects);
recentRejects->insert(tx.GetHash());
}
@ -5574,9 +5580,7 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
if (state.GetRejectCode() < REJECT_INTERNAL) // Never send AcceptToMemoryPool's internal codes over P2P
pfrom->PushMessage(NetMsgType::REJECT, strCommand, (unsigned char)state.GetRejectCode(),
state.GetRejectReason().substr(0, MAX_REJECT_MESSAGE_LENGTH), inv.hash);
if (nDoS > 0 && (!state.CorruptionPossible() || State(pfrom->id)->fHaveWitness)) {
// When a non-witness-supporting peer gives us a transaction that would
// be accepted if witness validation was off, we can't blame them for it.
if (nDoS > 0) {
Misbehaving(pfrom->GetId(), nDoS);
}
}