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Only relay Taproot spends if next block has it active

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This commit is contained in:
Pieter Wuille
2020-10-15 20:57:58 -07:00
parent 42b66a6b81
commit 525cbd425e
9 changed files with 23 additions and 15 deletions
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5
src/policy/policy.cpp
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@@ -155,7 +155,7 @@ bool IsStandardTx(const CTransaction& tx, bool permit_bare_multisig, const CFeeR
*
* Note that only the non-witness portion of the transaction is checked here.
*/
bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs)
bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs, bool taproot_active)
{
if (tx.IsCoinBase())
return true; // Coinbases don't use vin normally
@@ -183,6 +183,9 @@ bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs)
if (subscript.GetSigOpCount(true) > MAX_P2SH_SIGOPS) {
return false;
}
} else if (whichType == TxoutType::WITNESS_V1_TAPROOT) {
// Don't allow Taproot spends unless Taproot is active.
if (!taproot_active) return false;
}
}

5
src/policy/policy.h
View File

@@ -95,10 +95,11 @@ bool IsStandard(const CScript& scriptPubKey, TxoutType& whichType);
bool IsStandardTx(const CTransaction& tx, bool permit_bare_multisig, const CFeeRate& dust_relay_fee, std::string& reason);
/**
* Check for standard transaction types
* @param[in] mapInputs Map of previous transactions that have outputs we're spending
* @param[in] mapInputs Map of previous transactions that have outputs we're spending
* @param[in] taproot_active Whether or taproot consensus rules are active (used to decide whether spends of them are permitted)
* @return True if all inputs (scriptSigs) use only standard transaction forms
*/
bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs);
bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs, bool taproot_active);
/**
* Check if the transaction is over standard P2WSH resources limit:
* 3600bytes witnessScript size, 80bytes per witness stack element, 100 witness stack elements