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validation: Pass in chain tip to ::CheckFinalTx

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This commit is contained in:
Carl Dong 2020-09-16 17:17:45 -04:00
parent 252b489c9f
commit d015eaa550
2 changed files with 10 additions and 3 deletions
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12
src/validation.cpp
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@ -205,8 +205,14 @@ static FlatFileSeq BlockFileSeq();
static FlatFileSeq UndoFileSeq();
bool CheckFinalTx(const CTransaction &tx, int flags)
{
return CheckFinalTx(::ChainActive().Tip(), tx, flags);
}
bool CheckFinalTx(const CBlockIndex* active_chain_tip, const CTransaction &tx, int flags)
{
AssertLockHeld(cs_main);
assert(std::addressof(*::ChainActive().Tip()) == std::addressof(*active_chain_tip));
// By convention a negative value for flags indicates that the
// current network-enforced consensus rules should be used. In
@ -222,7 +228,7 @@ bool CheckFinalTx(const CTransaction &tx, int flags)
// evaluated is what is used. Thus if we want to know if a
// transaction can be part of the *next* block, we need to call
// IsFinalTx() with one more than ::ChainActive().Height().
const int nBlockHeight = ::ChainActive().Height() + 1;
const int nBlockHeight = active_chain_tip->nHeight + 1;
// BIP113 requires that time-locked transactions have nLockTime set to
// less than the median time of the previous block they're contained in.
@ -230,7 +236,7 @@ bool CheckFinalTx(const CTransaction &tx, int flags)
// chain tip, so we use that to calculate the median time passed to
// IsFinalTx() if LOCKTIME_MEDIAN_TIME_PAST is set.
const int64_t nBlockTime = (flags & LOCKTIME_MEDIAN_TIME_PAST)
? ::ChainActive().Tip()->GetMedianTimePast()
? active_chain_tip->GetMedianTimePast()
: GetAdjustedTime();
return IsFinalTx(tx, nBlockHeight, nBlockTime);
@ -599,7 +605,7 @@ bool MemPoolAccept::PreChecks(ATMPArgs& args, Workspace& ws)
// Only accept nLockTime-using transactions that can be mined in the next
// block; we don't want our mempool filled up with transactions that can't
// be mined yet.
if (!CheckFinalTx(tx, STANDARD_LOCKTIME_VERIFY_FLAGS))
if (!CheckFinalTx(::ChainActive().Tip(), tx, STANDARD_LOCKTIME_VERIFY_FLAGS))
return state.Invalid(TxValidationResult::TX_PREMATURE_SPEND, "non-final");
// is it already in the memory pool?

1
src/validation.h
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@ -249,6 +249,7 @@ void UpdateCoins(const CTransaction& tx, CCoinsViewCache& inputs, int nHeight);
* See consensus/consensus.h for flag definitions.
*/
bool CheckFinalTx(const CTransaction &tx, int flags = -1) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
bool CheckFinalTx(const CBlockIndex* active_chain_tip, const CTransaction &tx, int flags = -1) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
/**
* Test whether the LockPoints height and time are still valid on the current chain