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Merge #19620: Add txids with non-standard inputs to reject filter

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9f88ded82b2898ca63d44c08072f1ba52f0e18d7 test addition of unknown segwit spends to txid reject filter (Gregory Sanders)
7989901c7eb62ca28b3d1e5d5831041a7267e495 Add txids with non-standard inputs to reject filter (Suhas Daftuar)

Pull request description:

  Our policy checks for non-standard inputs depend only on the non-witness
  portion of a transaction: we look up the scriptPubKey of the input being
  spent from our UTXO set (which is covered by the input txid), and the p2sh
  checks only rely on the scriptSig portion of the input.

  Consequently it's safe to add txids of transactions that fail these checks to
  the reject filter, as the witness is irrelevant to the failure. This is helpful
  for any situation where we might request the transaction again via txid (either
  from txid-relay peers, or if we might fetch the transaction via txid due to
  parent-fetching of orphans).

  Further, in preparation for future witness versions being deployed on the
  network, ensure that WITNESS_UNKNOWN transactions are rejected in
  AreInputsStandard(), so that transactions spending v1 (or greater) witness
  outputs will fall into this category of having their txid added to the reject
  filter.

ACKs for top commit:
  ajtowns:
    ACK 9f88ded82b2898ca63d44c08072f1ba52f0e18d7 - code review
  jnewbery:
    Code review ACK 9f88ded82b2898ca63d44c08072f1ba52f0e18d7
  ariard:
    Code Review/Tested ACK 9f88ded
  naumenkogs:
    utACK 9f88ded82b2898ca63d44c08072f1ba52f0e18d7
  jonatack:
    ACK 9f88ded82b2

Tree-SHA512: 1e93c0a5b68cb432524780ffc0093db893911fdfed9e2ed17f888e59114cc75d2a07062aefad4e5ce2e87c9270886117a8abb3c78fb889c9b9f31967f1777148
This commit is contained in:
fanquake 2020-08-07 07:14:31 +08:00 committed by pasta
parent 0b0cc82819
commit 8ef196d9b8
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GPG Key ID: 52527BEDABE87984
3 changed files with 6 additions and 3 deletions
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3
src/consensus/validation.h
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@ -19,7 +19,8 @@ enum class TxValidationResult {
*/ */
// Only loose txn: // Only loose txn:
TX_RECENT_CONSENSUS_CHANGE, TX_RECENT_CONSENSUS_CHANGE,
TX_NOT_STANDARD, //!< didn't meet our local policy rules TX_INPUTS_NOT_STANDARD, //!< inputs (covered by txid) failed policy rules
TX_NOT_STANDARD, //!< otherwise didn't meet our local policy rules
TX_MISSING_INPUTS, //!< transaction was missing some of its inputs TX_MISSING_INPUTS, //!< transaction was missing some of its inputs
TX_PREMATURE_SPEND, //!< transaction spends a coinbase too early, or violates locktime/sequence locks TX_PREMATURE_SPEND, //!< transaction spends a coinbase too early, or violates locktime/sequence locks
TX_BAD_SPECIAL, //!< special transaction violates some rules that are not enough for insta-ban TX_BAD_SPECIAL, //!< special transaction violates some rules that are not enough for insta-ban

1
src/net_processing.cpp
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@ -1532,6 +1532,7 @@ bool PeerManagerImpl::MaybePunishNodeForTx(NodeId nodeid, const TxValidationStat
} }
// Conflicting (but not necessarily invalid) data or different policy: // Conflicting (but not necessarily invalid) data or different policy:
case TxValidationResult::TX_RECENT_CONSENSUS_CHANGE: case TxValidationResult::TX_RECENT_CONSENSUS_CHANGE:
case TxValidationResult::TX_INPUTS_NOT_STANDARD:
case TxValidationResult::TX_NOT_STANDARD: case TxValidationResult::TX_NOT_STANDARD:
case TxValidationResult::TX_MISSING_INPUTS: case TxValidationResult::TX_MISSING_INPUTS:
case TxValidationResult::TX_PREMATURE_SPEND: case TxValidationResult::TX_PREMATURE_SPEND:

5
src/validation.cpp
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@ -765,8 +765,9 @@ bool MemPoolAccept::PreChecks(ATMPArgs& args, Workspace& ws)
} }
// Check for non-standard pay-to-script-hash in inputs // Check for non-standard pay-to-script-hash in inputs
if (fRequireStandard && !AreInputsStandard(tx, m_view)) if (fRequireStandard && !AreInputsStandard(tx, m_view)) {
return state.Invalid(TxValidationResult::TX_NOT_STANDARD, "bad-txns-nonstandard-inputs"); return state.Invalid(TxValidationResult::TX_INPUTS_NOT_STANDARD, "bad-txns-nonstandard-inputs");
}
unsigned int nSigOps = GetTransactionSigOpCount(tx, m_view, STANDARD_SCRIPT_VERIFY_FLAGS); unsigned int nSigOps = GetTransactionSigOpCount(tx, m_view, STANDARD_SCRIPT_VERIFY_FLAGS);