//! Further functional tests which test blockchain reorganizations.
-use crate::sign::{EcdsaChannelSigner, SpendableOutputDescriptor};
+use crate::sign::{ecdsa::EcdsaChannelSigner, SpendableOutputDescriptor};
use crate::chain::channelmonitor::{ANTI_REORG_DELAY, LATENCY_GRACE_PERIOD_BLOCKS, Balance};
use crate::chain::transaction::OutPoint;
use crate::chain::chaininterface::{LowerBoundedFeeEstimator, compute_feerate_sat_per_1000_weight};
use crate::util::scid_utils::block_from_scid;
use crate::util::test_utils;
-use bitcoin::blockdata::transaction::EcdsaSighashType;
+use bitcoin::{Amount, PublicKey, ScriptBuf, Transaction, TxIn, TxOut, Witness};
+use bitcoin::blockdata::locktime::absolute::LockTime;
use bitcoin::blockdata::script::Builder;
use bitcoin::blockdata::opcodes;
+use bitcoin::hashes::hex::FromHex;
use bitcoin::secp256k1::{Secp256k1, SecretKey};
-use bitcoin::{Amount, PublicKey, Script, Transaction, TxIn, TxOut, PackedLockTime, Witness};
-use bitcoin::util::sighash::SighashCache;
+use bitcoin::sighash::{SighashCache, EcdsaSighashType};
use crate::prelude::*;
let coinbase_tx = Transaction {
version: 2,
- lock_time: PackedLockTime::ZERO,
+ lock_time: LockTime::ZERO,
input: vec![TxIn { ..Default::default() }],
output: vec![
TxOut {
let coinbase_tx = Transaction {
version: 2,
- lock_time: PackedLockTime::ZERO,
+ lock_time: LockTime::ZERO,
input: vec![TxIn { ..Default::default() }],
output: vec![
TxOut {
commitment_tx
};
let commitment_tx_conf_height_a = block_from_scid(&mine_transaction(&nodes[0], &commitment_tx));
- if anchors && nodes[0].connect_style.borrow().updates_best_block_first() {
+ if nodes[0].connect_style.borrow().updates_best_block_first() {
let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
assert_eq!(txn.len(), 1);
assert_eq!(txn[0].txid(), commitment_tx.txid());
claim_txn.sort_unstable_by_key(|tx| tx.output.iter().map(|output| output.value).sum::<u64>());
// The following constants were determined experimentally
- const BS_TO_SELF_CLAIM_EXP_WEIGHT: usize = 483;
- let outbound_htlc_claim_exp_weight: usize = if anchors { 574 } else { 571 };
- let inbound_htlc_claim_exp_weight: usize = if anchors { 582 } else { 578 };
+ const BS_TO_SELF_CLAIM_EXP_WEIGHT: u64 = 483;
+ let outbound_htlc_claim_exp_weight: u64 = if anchors { 574 } else { 571 };
+ let inbound_htlc_claim_exp_weight: u64 = if anchors { 582 } else { 578 };
// Check that the weight is close to the expected weight. Note that signature sizes vary
// somewhat so it may not always be exact.
- fuzzy_assert_eq(claim_txn[0].weight(), outbound_htlc_claim_exp_weight);
- fuzzy_assert_eq(claim_txn[1].weight(), inbound_htlc_claim_exp_weight);
- fuzzy_assert_eq(claim_txn[2].weight(), inbound_htlc_claim_exp_weight);
- fuzzy_assert_eq(claim_txn[3].weight(), BS_TO_SELF_CLAIM_EXP_WEIGHT);
+ fuzzy_assert_eq(claim_txn[0].weight().to_wu(), outbound_htlc_claim_exp_weight);
+ fuzzy_assert_eq(claim_txn[1].weight().to_wu(), inbound_htlc_claim_exp_weight);
+ fuzzy_assert_eq(claim_txn[2].weight().to_wu(), inbound_htlc_claim_exp_weight);
+ fuzzy_assert_eq(claim_txn[3].weight().to_wu(), BS_TO_SELF_CLAIM_EXP_WEIGHT);
let commitment_tx_fee = chan_feerate *
(channel::commitment_tx_base_weight(&channel_type_features) + 3 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000;
let anchor_outputs_value = if anchors { channel::ANCHOR_OUTPUT_VALUE_SATOSHI * 2 } else { 0 };
- let inbound_htlc_claim_fee = chan_feerate * inbound_htlc_claim_exp_weight as u64 / 1000;
- let outbound_htlc_claim_fee = chan_feerate * outbound_htlc_claim_exp_weight as u64 / 1000;
- let to_self_claim_fee = chan_feerate * claim_txn[3].weight() as u64 / 1000;
+ let inbound_htlc_claim_fee = chan_feerate * inbound_htlc_claim_exp_weight / 1000;
+ let outbound_htlc_claim_fee = chan_feerate * outbound_htlc_claim_exp_weight / 1000;
+ let to_self_claim_fee = chan_feerate * claim_txn[3].weight().to_wu() / 1000;
// The expected balance for the next three checks, with the largest-HTLC and to_self output
// claim balances separated out.
let coinbase_tx = Transaction {
version: 2,
- lock_time: PackedLockTime::ZERO,
+ lock_time: LockTime::ZERO,
input: vec![TxIn { ..Default::default() }],
output: vec![
TxOut {
check_spends!(txn[0], revoked_local_txn[0], coinbase_tx);
txn.pop().unwrap()
};
- let revoked_htlc_success_fee = chan_feerate * revoked_htlc_success.weight() as u64 / 1000;
+ let revoked_htlc_success_fee = chan_feerate * revoked_htlc_success.weight().to_wu() / 1000;
connect_blocks(&nodes[1], TEST_FINAL_CLTV);
if anchors {
};
check_spends!(revoked_htlc_timeout, revoked_local_txn[0], coinbase_tx);
assert_ne!(revoked_htlc_success.input[0].previous_output, revoked_htlc_timeout.input[0].previous_output);
- assert_eq!(revoked_htlc_success.lock_time.0, 0);
- assert_ne!(revoked_htlc_timeout.lock_time.0, 0);
+ assert_eq!(revoked_htlc_success.lock_time, LockTime::ZERO);
+ assert_ne!(revoked_htlc_timeout.lock_time, LockTime::ZERO);
// A will generate justice tx from B's revoked commitment/HTLC tx
mine_transaction(&nodes[0], &revoked_local_txn[0]);
sorted_vec(nodes[0].chain_monitor.chain_monitor.get_monitor(funding_outpoint).unwrap().get_claimable_balances()));
assert_eq!(as_htlc_claim_tx[0].output.len(), 1);
- let as_revoked_htlc_success_claim_fee = chan_feerate * as_htlc_claim_tx[0].weight() as u64 / 1000;
+ let as_revoked_htlc_success_claim_fee = chan_feerate * as_htlc_claim_tx[0].weight().to_wu() / 1000;
if anchors {
// With anchors, B can pay for revoked_htlc_success's fee with additional inputs, rather
// than with the HTLC itself.
}]),
sorted_vec(nodes[0].chain_monitor.chain_monitor.get_monitor(funding_outpoint).unwrap().get_claimable_balances()));
- connect_blocks(&nodes[0], revoked_htlc_timeout.lock_time.0 - nodes[0].best_block_info().1);
+ connect_blocks(&nodes[0], revoked_htlc_timeout.lock_time.to_consensus_u32() - nodes[0].best_block_info().1);
expect_pending_htlcs_forwardable_and_htlc_handling_failed_ignore!(&nodes[0],
[HTLCDestination::FailedPayment { payment_hash: failed_payment_hash }]);
// As time goes on A may split its revocation claim transaction into multiple.
let coinbase_tx = Transaction {
version: 2,
- lock_time: PackedLockTime::ZERO,
+ lock_time: LockTime::ZERO,
input: vec![TxIn { ..Default::default() }],
output: vec![TxOut {
value: Amount::ONE_BTC.to_sat(),
};
mine_transaction(&nodes[0], &commitment_tx);
+ if nodes[0].connect_style.borrow().updates_best_block_first() {
+ let txn = nodes[0].tx_broadcaster.txn_broadcast();
+ assert_eq!(txn.len(), 1);
+ assert_eq!(txn[0].txid(), commitment_tx.txid());
+ }
// Connect blocks until the HTLC's expiration is met, expecting a transaction broadcast.
connect_blocks(&nodes[0], TEST_FINAL_CLTV);
// Check that we can still rebroadcast these packages/transactions if we're upgrading from an
// old `ChannelMonitor` that did not exercise said rebroadcasting logic.
if check_old_monitor_retries_after_upgrade {
- let serialized_monitor = hex::decode(
+ let serialized_monitor = <Vec<u8>>::from_hex(
"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0",
).unwrap();
reload_node!(nodes[0], &nodes[0].node.encode(), &[&serialized_monitor], persister, new_chain_monitor, node_deserialized);
let coinbase_tx = Transaction {
version: 2,
- lock_time: PackedLockTime::ZERO,
+ lock_time: LockTime::ZERO,
input: vec![TxIn { ..Default::default() }],
output: vec![TxOut { // UTXO to attach fees to `htlc_tx` on anchors
value: Amount::ONE_BTC.to_sat(),
check_spends!(&htlc_tx, &commitment_txn[0], &coinbase_tx);
let htlc_tx_fee = HTLC_AMT_SAT + coinbase_tx.output[0].value -
htlc_tx.output.iter().map(|output| output.value).sum::<u64>();
- let htlc_tx_weight = htlc_tx.weight() as u64;
+ let htlc_tx_weight = htlc_tx.weight().to_wu();
(htlc_tx, compute_feerate_sat_per_1000_weight(htlc_tx_fee, htlc_tx_weight))
}
_ => panic!("Unexpected event"),
let htlc_tx = txn.pop().unwrap();
check_spends!(htlc_tx, commitment_txn[0]);
let htlc_tx_fee = HTLC_AMT_SAT - htlc_tx.output[0].value;
- let htlc_tx_weight = htlc_tx.weight() as u64;
+ let htlc_tx_weight = htlc_tx.weight().to_wu();
(htlc_tx, compute_feerate_sat_per_1000_weight(htlc_tx_fee, htlc_tx_weight))
};
if should_bump {
Event::BumpTransaction(event) => {
let coinbase_tx = Transaction {
version: 2,
- lock_time: PackedLockTime::ZERO,
+ lock_time: LockTime::ZERO,
input: vec![TxIn { ..Default::default() }],
output: vec![TxOut { // UTXO to attach fees to `anchor_tx`
value: Amount::ONE_BTC.to_sat(),
nodes[1].node.timer_tick_occurred();
check_added_monitors(&nodes[1], 2);
check_closed_event!(&nodes[1], 2, ClosureReason::OutdatedChannelManager, [nodes[0].node.get_our_node_id(); 2], 1000000);
- let (revoked_commitment_a, revoked_commitment_b) = {
- let txn = nodes[1].tx_broadcaster.unique_txn_broadcast();
- assert_eq!(txn.len(), 2);
- assert_eq!(txn[0].output.len(), 6); // 2 HTLC outputs + 1 to_self output + 1 to_remote output + 2 anchor outputs
- assert_eq!(txn[1].output.len(), 6); // 2 HTLC outputs + 1 to_self output + 1 to_remote output + 2 anchor outputs
- if txn[0].input[0].previous_output.txid == chan_a.3.txid() {
- check_spends!(&txn[0], &chan_a.3);
- check_spends!(&txn[1], &chan_b.3);
- (txn[0].clone(), txn[1].clone())
- } else {
- check_spends!(&txn[1], &chan_a.3);
- check_spends!(&txn[0], &chan_b.3);
- (txn[1].clone(), txn[0].clone())
- }
- };
// Bob should now receive two events to bump his revoked commitment transaction fees.
assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
let events = nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events();
assert_eq!(events.len(), 2);
+ let mut revoked_commitment_txs = Vec::with_capacity(events.len());
let mut anchor_txs = Vec::with_capacity(events.len());
for (idx, event) in events.into_iter().enumerate() {
let utxo_value = Amount::ONE_BTC.to_sat() * (idx + 1) as u64;
let coinbase_tx = Transaction {
version: 2,
- lock_time: PackedLockTime::ZERO,
+ lock_time: LockTime::ZERO,
input: vec![TxIn { ..Default::default() }],
output: vec![TxOut { // UTXO to attach fees to `anchor_tx`
value: utxo_value,
};
let txn = nodes[1].tx_broadcaster.txn_broadcast();
assert_eq!(txn.len(), 2);
+ assert_eq!(txn[0].output.len(), 6); // 2 HTLC outputs + 1 to_self output + 1 to_remote output + 2 anchor outputs
+ if txn[0].input[0].previous_output.txid == chan_a.3.txid() {
+ check_spends!(&txn[0], &chan_a.3);
+ } else {
+ check_spends!(&txn[0], &chan_b.3);
+ }
let (commitment_tx, anchor_tx) = (&txn[0], &txn[1]);
check_spends!(anchor_tx, coinbase_tx, commitment_tx);
+
+ revoked_commitment_txs.push(commitment_tx.clone());
anchor_txs.push(anchor_tx.clone());
};
for node in &nodes {
- mine_transactions(node, &[&revoked_commitment_a, &anchor_txs[0], &revoked_commitment_b, &anchor_txs[1]]);
+ mine_transactions(node, &[&revoked_commitment_txs[0], &anchor_txs[0], &revoked_commitment_txs[1], &anchor_txs[1]]);
}
check_added_monitors!(&nodes[0], 2);
check_closed_broadcast(&nodes[0], 2, true);
let txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0);
assert_eq!(txn.len(), 4);
- let (revoked_htlc_claim_a, revoked_htlc_claim_b) = if txn[0].input[0].previous_output.txid == revoked_commitment_a.txid() {
+ let (revoked_htlc_claim_a, revoked_htlc_claim_b) = if txn[0].input[0].previous_output.txid == revoked_commitment_txs[0].txid() {
(if txn[0].input.len() == 2 { &txn[0] } else { &txn[1] }, if txn[2].input.len() == 2 { &txn[2] } else { &txn[3] })
} else {
(if txn[2].input.len() == 2 { &txn[2] } else { &txn[3] }, if txn[0].input.len() == 2 { &txn[0] } else { &txn[1] })
assert_eq!(revoked_htlc_claim_a.input.len(), 2); // Spends both HTLC outputs
assert_eq!(revoked_htlc_claim_a.output.len(), 1);
- check_spends!(revoked_htlc_claim_a, revoked_commitment_a);
+ check_spends!(revoked_htlc_claim_a, revoked_commitment_txs[0]);
assert_eq!(revoked_htlc_claim_b.input.len(), 2); // Spends both HTLC outputs
assert_eq!(revoked_htlc_claim_b.output.len(), 1);
- check_spends!(revoked_htlc_claim_b, revoked_commitment_b);
+ check_spends!(revoked_htlc_claim_b, revoked_commitment_txs[1]);
}
// Since Bob was able to confirm his revoked commitment, he'll now try to claim the HTLCs
let htlc_tx = {
let secret_key = SecretKey::from_slice(&[1; 32]).unwrap();
let public_key = PublicKey::new(secret_key.public_key(&secp));
- let fee_utxo_script = Script::new_v0_p2wpkh(&public_key.wpubkey_hash().unwrap());
+ let fee_utxo_script = ScriptBuf::new_v0_p2wpkh(&public_key.wpubkey_hash().unwrap());
let coinbase_tx = Transaction {
version: 2,
- lock_time: PackedLockTime::ZERO,
+ lock_time: LockTime::ZERO,
input: vec![TxIn { ..Default::default() }],
output: vec![TxOut { // UTXO to attach fees to `htlc_tx`
value: Amount::ONE_BTC.to_sat(),
};
let mut htlc_tx = Transaction {
version: 2,
- lock_time: PackedLockTime::ZERO,
+ lock_time: LockTime::ZERO,
input: vec![TxIn { // Fee input
previous_output: bitcoin::OutPoint { txid: coinbase_tx.txid(), vout: 0 },
..Default::default()
}],
output: vec![TxOut { // Fee input change
value: coinbase_tx.output[0].value / 2 ,
- script_pubkey: Script::new_op_return(&[]),
+ script_pubkey: ScriptBuf::new_op_return(&[]),
}],
};
let mut descriptors = Vec::with_capacity(4);
htlc_tx.input[htlc_input_idx].witness = htlc_descriptor.tx_input_witness(&our_sig, &witness_script);
}
let fee_utxo_sig = {
- let witness_script = Script::new_p2pkh(&public_key.pubkey_hash());
+ let witness_script = ScriptBuf::new_p2pkh(&public_key.pubkey_hash());
let sighash = hash_to_message!(&SighashCache::new(&htlc_tx).segwit_signature_hash(
0, &witness_script, coinbase_tx.output[0].value, EcdsaSighashType::All
).unwrap()[..]);
sig.push(EcdsaSighashType::All as u8);
sig
};
- htlc_tx.input[0].witness = Witness::from_vec(vec![fee_utxo_sig, public_key.to_bytes()]);
- check_spends!(htlc_tx, coinbase_tx, revoked_commitment_a, revoked_commitment_b);
+ htlc_tx.input[0].witness = Witness::from_slice(&[fee_utxo_sig, public_key.to_bytes()]);
+ check_spends!(htlc_tx, coinbase_tx, revoked_commitment_txs[0], revoked_commitment_txs[1]);
htlc_tx
};
assert_eq!(outputs.len(), 1);
assert!(vec![chan_b.2, chan_a.2].contains(&channel_id.unwrap()));
let spend_tx = nodes[0].keys_manager.backing.spend_spendable_outputs(
- &[&outputs[0]], Vec::new(), Script::new_op_return(&[]), 253, None, &Secp256k1::new(),
+ &[&outputs[0]], Vec::new(), ScriptBuf::new_op_return(&[]), 253, None, &Secp256k1::new(),
).unwrap();
if let SpendableOutputDescriptor::StaticPaymentOutput(_) = &outputs[0] {
- check_spends!(spend_tx, &revoked_commitment_a, &revoked_commitment_b);
+ check_spends!(spend_tx, &revoked_commitment_txs[0], &revoked_commitment_txs[1]);
} else {
check_spends!(spend_tx, revoked_claim_transactions.get(&spend_tx.input[0].previous_output.txid).unwrap());
}
let secp = Secp256k1::new();
let privkey = bitcoin::PrivateKey::from_slice(&[1; 32], bitcoin::Network::Testnet).unwrap();
let pubkey = bitcoin::PublicKey::from_private_key(&secp, &privkey);
- let p2wpkh_script = Script::new_v0_p2wpkh(&pubkey.wpubkey_hash().unwrap());
+ let p2wpkh_script = ScriptBuf::new_v0_p2wpkh(&pubkey.wpubkey_hash().unwrap());
get_monitor!(nodes[1], chan_id).set_counterparty_payment_script(p2wpkh_script.clone());
assert_eq!(get_monitor!(nodes[1], chan_id).get_counterparty_payment_script(), p2wpkh_script);
let coinbase_tx = Transaction {
version: 2,
- lock_time: PackedLockTime::ZERO,
+ lock_time: LockTime::ZERO,
input: vec![TxIn { ..Default::default() }],
output: vec![
TxOut {
// If we update the best block to the new height before providing the confirmed transactions,
// we'll see another broadcast of the commitment transaction.
- if anchors && !confirm_counterparty_commitment && nodes[0].connect_style.borrow().updates_best_block_first() {
+ if !confirm_counterparty_commitment && nodes[0].connect_style.borrow().updates_best_block_first() {
let _ = nodes[0].tx_broadcaster.txn_broadcast();
}
let htlc_timeout_tx = {
let mut txn = nodes[0].tx_broadcaster.txn_broadcast();
assert_eq!(txn.len(), 1);
- let tx = if txn[0].input[0].previous_output.txid == commitment_tx.txid() {
- txn[0].clone()
- } else {
- txn[1].clone()
- };
+ let tx = txn.pop().unwrap();
check_spends!(tx, commitment_tx, coinbase_tx);
tx
};