diff options
| -rw-r--r-- | src/primitives/transaction.h | 36 | ||||
| -rw-r--r-- | src/rpc/rawtransaction_util.cpp | 2 | ||||
| -rw-r--r-- | src/test/fuzz/util.cpp | 2 | ||||
| -rw-r--r-- | src/test/miner_tests.cpp | 2 | ||||
| -rw-r--r-- | src/wallet/spend.cpp | 2 |
5 files changed, 32 insertions, 12 deletions
diff --git a/src/primitives/transaction.h b/src/primitives/transaction.h index 67ea4a3747..1fcbc45c72 100644 --- a/src/primitives/transaction.h +++ b/src/primitives/transaction.h @@ -70,25 +70,45 @@ public: uint32_t nSequence; CScriptWitness scriptWitness; //!< Only serialized through CTransaction - /* Setting nSequence to this value for every input in a transaction - * disables nLockTime. */ + /** + * Setting nSequence to this value for every input in a transaction + * disables nLockTime/IsFinalTx(). + * It fails OP_CHECKLOCKTIMEVERIFY/CheckLockTime() for any input that has + * it set (BIP 65). + * It has SEQUENCE_LOCKTIME_DISABLE_FLAG set (BIP 68/112). + */ static const uint32_t SEQUENCE_FINAL = 0xffffffff; + /** + * This is the maximum sequence number that enables both nLockTime and + * OP_CHECKLOCKTIMEVERIFY (BIP 65). + * It has SEQUENCE_LOCKTIME_DISABLE_FLAG set (BIP 68/112). + */ + static const uint32_t MAX_SEQUENCE_NONFINAL{SEQUENCE_FINAL - 1}; - /* Below flags apply in the context of BIP 68*/ - /* If this flag set, CTxIn::nSequence is NOT interpreted as a - * relative lock-time. */ + // Below flags apply in the context of BIP 68. BIP 68 requires the tx + // version to be set to 2, or higher. + /** + * If this flag is set, CTxIn::nSequence is NOT interpreted as a + * relative lock-time. + * It skips SequenceLocks() for any input that has it set (BIP 68). + * It fails OP_CHECKSEQUENCEVERIFY/CheckSequence() for any input that has + * it set (BIP 112). + */ static const uint32_t SEQUENCE_LOCKTIME_DISABLE_FLAG = (1U << 31); - /* If CTxIn::nSequence encodes a relative lock-time and this flag + /** + * If CTxIn::nSequence encodes a relative lock-time and this flag * is set, the relative lock-time has units of 512 seconds, * otherwise it specifies blocks with a granularity of 1. */ static const uint32_t SEQUENCE_LOCKTIME_TYPE_FLAG = (1 << 22); - /* If CTxIn::nSequence encodes a relative lock-time, this mask is + /** + * If CTxIn::nSequence encodes a relative lock-time, this mask is * applied to extract that lock-time from the sequence field. */ static const uint32_t SEQUENCE_LOCKTIME_MASK = 0x0000ffff; - /* In order to use the same number of bits to encode roughly the + /** + * In order to use the same number of bits to encode roughly the * same wall-clock duration, and because blocks are naturally * limited to occur every 600s on average, the minimum granularity * for time-based relative lock-time is fixed at 512 seconds. diff --git a/src/rpc/rawtransaction_util.cpp b/src/rpc/rawtransaction_util.cpp index 3459897fe5..e23fe34480 100644 --- a/src/rpc/rawtransaction_util.cpp +++ b/src/rpc/rawtransaction_util.cpp @@ -63,7 +63,7 @@ CMutableTransaction ConstructTransaction(const UniValue& inputs_in, const UniVal if (rbf) { nSequence = MAX_BIP125_RBF_SEQUENCE; /* CTxIn::SEQUENCE_FINAL - 2 */ } else if (rawTx.nLockTime) { - nSequence = CTxIn::SEQUENCE_FINAL - 1; + nSequence = CTxIn::MAX_SEQUENCE_NONFINAL; /* CTxIn::SEQUENCE_FINAL - 1 */ } else { nSequence = CTxIn::SEQUENCE_FINAL; } diff --git a/src/test/fuzz/util.cpp b/src/test/fuzz/util.cpp index 47c2be3faa..2514636d6e 100644 --- a/src/test/fuzz/util.cpp +++ b/src/test/fuzz/util.cpp @@ -408,7 +408,7 @@ uint32_t ConsumeSequence(FuzzedDataProvider& fuzzed_data_provider) noexcept return fuzzed_data_provider.ConsumeBool() ? fuzzed_data_provider.PickValueInArray({ CTxIn::SEQUENCE_FINAL, - CTxIn::SEQUENCE_FINAL - 1, + CTxIn::MAX_SEQUENCE_NONFINAL, MAX_BIP125_RBF_SEQUENCE, }) : fuzzed_data_provider.ConsumeIntegral<uint32_t>(); diff --git a/src/test/miner_tests.cpp b/src/test/miner_tests.cpp index e07eb95856..c453dae701 100644 --- a/src/test/miner_tests.cpp +++ b/src/test/miner_tests.cpp @@ -459,7 +459,7 @@ BOOST_AUTO_TEST_CASE(CreateNewBlock_validity) // absolute height locked tx.vin[0].prevout.hash = txFirst[2]->GetHash(); - tx.vin[0].nSequence = CTxIn::SEQUENCE_FINAL - 1; + tx.vin[0].nSequence = CTxIn::MAX_SEQUENCE_NONFINAL; prevheights[0] = baseheight + 3; tx.nLockTime = m_node.chainman->ActiveChain().Tip()->nHeight + 1; hash = tx.GetHash(); diff --git a/src/wallet/spend.cpp b/src/wallet/spend.cpp index d87bdc8679..031d0c82dc 100644 --- a/src/wallet/spend.cpp +++ b/src/wallet/spend.cpp @@ -798,7 +798,7 @@ static bool CreateTransactionInternal( // to avoid conflicting with other possible uses of nSequence, // and in the spirit of "smallest possible change from prior // behavior." - const uint32_t nSequence = coin_control.m_signal_bip125_rbf.value_or(wallet.m_signal_rbf) ? MAX_BIP125_RBF_SEQUENCE : (CTxIn::SEQUENCE_FINAL - 1); + const uint32_t nSequence{coin_control.m_signal_bip125_rbf.value_or(wallet.m_signal_rbf) ? MAX_BIP125_RBF_SEQUENCE : CTxIn::MAX_SEQUENCE_NONFINAL}; for (const auto& coin : selected_coins) { txNew.vin.push_back(CTxIn(coin.outpoint, CScript(), nSequence)); } |