diff options
Diffstat (limited to 'src/policy')
| -rw-r--r-- | src/policy/packages.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/policy/packages.cpp b/src/policy/packages.cpp index 6e70a94088..a901ef8f38 100644 --- a/src/policy/packages.cpp +++ b/src/policy/packages.cpp @@ -37,6 +37,13 @@ bool CheckPackage(const Package& txns, PackageValidationState& state) std::unordered_set<uint256, SaltedTxidHasher> later_txids; std::transform(txns.cbegin(), txns.cend(), std::inserter(later_txids, later_txids.end()), [](const auto& tx) { return tx->GetHash(); }); + + // Package must not contain any duplicate transactions, which is checked by txid. This also + // includes transactions with duplicate wtxids and same-txid-different-witness transactions. + if (later_txids.size() != txns.size()) { + return state.Invalid(PackageValidationResult::PCKG_POLICY, "package-contains-duplicates"); + } + for (const auto& tx : txns) { for (const auto& input : tx->vin) { if (later_txids.find(input.prevout.hash) != later_txids.end()) { |