debug_assert!(htlc_input_idx_opt.is_some());
BitcoinOutPoint::new(*txid, htlc_input_idx_opt.unwrap_or(0))
} else {
- debug_assert!(!self.onchain_tx_handler.opt_anchors());
+ debug_assert!(!self.onchain_tx_handler.channel_type_features().supports_anchors_zero_fee_htlc_tx());
BitcoinOutPoint::new(*txid, 0)
}
} else {
// If the channel supports anchor outputs, we'll need to emit an external
// event to be consumed such that a child transaction is broadcast with a
// high enough feerate for the parent commitment transaction to confirm.
- if self.onchain_tx_handler.opt_anchors() {
+ if self.onchain_tx_handler.channel_type_features().supports_anchors_zero_fee_htlc_tx() {
let funding_output = HolderFundingOutput::build(
self.funding_redeemscript.clone(), self.channel_value_satoshis,
- self.onchain_tx_handler.opt_anchors(),
+ self.onchain_tx_handler.channel_type_features().clone(),
);
let best_block_height = self.best_block.height();
let commitment_package = PackageTemplate::build_package(
// First, process non-htlc outputs (to_holder & to_counterparty)
for (idx, outp) in tx.output.iter().enumerate() {
if outp.script_pubkey == revokeable_p2wsh {
- let revk_outp = RevokedOutput::build(per_commitment_point, self.counterparty_commitment_params.counterparty_delayed_payment_base_key, self.counterparty_commitment_params.counterparty_htlc_base_key, per_commitment_key, outp.value, self.counterparty_commitment_params.on_counterparty_tx_csv, self.onchain_tx_handler.opt_anchors());
+ let revk_outp = RevokedOutput::build(per_commitment_point, self.counterparty_commitment_params.counterparty_delayed_payment_base_key, self.counterparty_commitment_params.counterparty_htlc_base_key, per_commitment_key, outp.value, self.counterparty_commitment_params.on_counterparty_tx_csv, self.onchain_tx_handler.channel_type_features().supports_anchors_zero_fee_htlc_tx());
let justice_package = PackageTemplate::build_package(commitment_txid, idx as u32, PackageSolvingData::RevokedOutput(revk_outp), height + self.counterparty_commitment_params.on_counterparty_tx_csv as u32, height);
claimable_outpoints.push(justice_package);
to_counterparty_output_info =
return (claimable_outpoints, (commitment_txid, watch_outputs),
to_counterparty_output_info);
}
- let revk_htlc_outp = RevokedHTLCOutput::build(per_commitment_point, self.counterparty_commitment_params.counterparty_delayed_payment_base_key, self.counterparty_commitment_params.counterparty_htlc_base_key, per_commitment_key, htlc.amount_msat / 1000, htlc.clone(), self.onchain_tx_handler.channel_transaction_parameters.opt_anchors.is_some());
+ let revk_htlc_outp = RevokedHTLCOutput::build(per_commitment_point, self.counterparty_commitment_params.counterparty_delayed_payment_base_key, self.counterparty_commitment_params.counterparty_htlc_base_key, per_commitment_key, htlc.amount_msat / 1000, htlc.clone(), &self.onchain_tx_handler.channel_transaction_parameters.channel_type_features);
let justice_package = PackageTemplate::build_package(commitment_txid, transaction_output_index, PackageSolvingData::RevokedHTLCOutput(revk_htlc_outp), htlc.cltv_expiry, height);
claimable_outpoints.push(justice_package);
}
CounterpartyOfferedHTLCOutput::build(*per_commitment_point,
self.counterparty_commitment_params.counterparty_delayed_payment_base_key,
self.counterparty_commitment_params.counterparty_htlc_base_key,
- preimage.unwrap(), htlc.clone(), self.onchain_tx_handler.opt_anchors()))
+ preimage.unwrap(), htlc.clone(), self.onchain_tx_handler.channel_type_features().clone()))
} else {
PackageSolvingData::CounterpartyReceivedHTLCOutput(
CounterpartyReceivedHTLCOutput::build(*per_commitment_point,
self.counterparty_commitment_params.counterparty_delayed_payment_base_key,
self.counterparty_commitment_params.counterparty_htlc_base_key,
- htlc.clone(), self.onchain_tx_handler.opt_anchors()))
+ htlc.clone(), self.onchain_tx_handler.channel_type_features().clone()))
};
let counterparty_package = PackageTemplate::build_package(commitment_txid, transaction_output_index, counterparty_htlc_outp, htlc.cltv_expiry, 0);
claimable_outpoints.push(counterparty_package);
if let Some(transaction_output_index) = htlc.transaction_output_index {
let htlc_output = if htlc.offered {
let htlc_output = HolderHTLCOutput::build_offered(
- htlc.amount_msat, htlc.cltv_expiry, self.onchain_tx_handler.opt_anchors()
+ htlc.amount_msat, htlc.cltv_expiry, self.onchain_tx_handler.channel_type_features().clone()
);
htlc_output
} else {
continue;
};
let htlc_output = HolderHTLCOutput::build_accepted(
- payment_preimage, htlc.amount_msat, self.onchain_tx_handler.opt_anchors()
+ payment_preimage, htlc.amount_msat, self.onchain_tx_handler.channel_type_features().clone()
);
htlc_output
};
let mut holder_transactions = vec![commitment_tx];
// When anchor outputs are present, the HTLC transactions are only valid once the commitment
// transaction confirms.
- if self.onchain_tx_handler.opt_anchors() {
+ if self.onchain_tx_handler.channel_type_features().supports_anchors_zero_fee_htlc_tx() {
return holder_transactions;
}
for htlc in self.current_holder_commitment_tx.htlc_outputs.iter() {
let mut holder_transactions = vec![commitment_tx];
// When anchor outputs are present, the HTLC transactions are only final once the commitment
// transaction confirms due to the CSV 1 encumberance.
- if self.onchain_tx_handler.opt_anchors() {
+ if self.onchain_tx_handler.channel_type_features().supports_anchors_zero_fee_htlc_tx() {
return holder_transactions;
}
for htlc in self.current_holder_commitment_tx.htlc_outputs.iter() {
let should_broadcast = self.should_broadcast_holder_commitment_txn(logger);
if should_broadcast {
- let funding_outp = HolderFundingOutput::build(self.funding_redeemscript.clone(), self.channel_value_satoshis, self.onchain_tx_handler.opt_anchors());
+ let funding_outp = HolderFundingOutput::build(self.funding_redeemscript.clone(), self.channel_value_satoshis, self.onchain_tx_handler.channel_type_features().clone());
let commitment_package = PackageTemplate::build_package(self.funding_info.0.txid.clone(), self.funding_info.0.index as u32, PackageSolvingData::HolderFundingOutput(funding_outp), self.best_block.height(), self.best_block.height());
claimable_outpoints.push(commitment_package);
self.pending_monitor_events.push(MonitorEvent::CommitmentTxConfirmed(self.funding_info.0));
// We can't broadcast our HTLC transactions while the commitment transaction is
// unconfirmed. We'll delay doing so until we detect the confirmed commitment in
// `transactions_confirmed`.
- if !self.onchain_tx_handler.opt_anchors() {
+ if !self.onchain_tx_handler.channel_type_features().supports_anchors_zero_fee_htlc_tx() {
// Because we're broadcasting a commitment transaction, we should construct the package
// assuming it gets confirmed in the next block. Sadly, we have code which considers
// "not yet confirmed" things as discardable, so we cannot do that here.
use crate::sync::{Arc, Mutex};
use crate::io;
use bitcoin::{PackedLockTime, Sequence, Witness};
+ use crate::ln::features::ChannelTypeFeatures;
use crate::prelude::*;
fn do_test_funding_spend_refuses_updates(use_local_txn: bool) {
selected_contest_delay: 67,
}),
funding_outpoint: Some(funding_outpoint),
- opt_anchors: None,
- opt_non_zero_fee_anchors: None,
+ channel_type_features: ChannelTypeFeatures::only_static_remote_key()
};
// Prune with one old state and a holder commitment tx holding a few overlaps with the
// old state.
let txid = Txid::from_hex("56944c5d3f98413ef45cf54545538103cc9f298e0575820ad3591376e2e0f65d").unwrap();
// Justice tx with 1 to_holder, 2 revoked offered HTLCs, 1 revoked received HTLCs
- for &opt_anchors in [false, true].iter() {
+ for channel_type_features in [ChannelTypeFeatures::only_static_remote_key(), ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies()].iter() {
let mut claim_tx = Transaction { version: 0, lock_time: PackedLockTime::ZERO, input: Vec::new(), output: Vec::new() };
let mut sum_actual_sigs = 0;
for i in 0..4 {
value: 0,
});
let base_weight = claim_tx.weight();
- let inputs_weight = vec![WEIGHT_REVOKED_OUTPUT, weight_revoked_offered_htlc(opt_anchors), weight_revoked_offered_htlc(opt_anchors), weight_revoked_received_htlc(opt_anchors)];
+ let inputs_weight = vec![WEIGHT_REVOKED_OUTPUT, weight_revoked_offered_htlc(channel_type_features), weight_revoked_offered_htlc(channel_type_features), weight_revoked_received_htlc(channel_type_features)];
let mut inputs_total_weight = 2; // count segwit flags
{
let mut sighash_parts = sighash::SighashCache::new(&mut claim_tx);
for (idx, inp) in inputs_weight.iter().enumerate() {
- sign_input!(sighash_parts, idx, 0, inp, sum_actual_sigs, opt_anchors);
+ sign_input!(sighash_parts, idx, 0, inp, sum_actual_sigs, channel_type_features);
inputs_total_weight += inp;
}
}
}
// Claim tx with 1 offered HTLCs, 3 received HTLCs
- for &opt_anchors in [false, true].iter() {
+ for channel_type_features in [ChannelTypeFeatures::only_static_remote_key(), ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies()].iter() {
let mut claim_tx = Transaction { version: 0, lock_time: PackedLockTime::ZERO, input: Vec::new(), output: Vec::new() };
let mut sum_actual_sigs = 0;
for i in 0..4 {
value: 0,
});
let base_weight = claim_tx.weight();
- let inputs_weight = vec![weight_offered_htlc(opt_anchors), weight_received_htlc(opt_anchors), weight_received_htlc(opt_anchors), weight_received_htlc(opt_anchors)];
+ let inputs_weight = vec![weight_offered_htlc(channel_type_features), weight_received_htlc(channel_type_features), weight_received_htlc(channel_type_features), weight_received_htlc(channel_type_features)];
let mut inputs_total_weight = 2; // count segwit flags
{
let mut sighash_parts = sighash::SighashCache::new(&mut claim_tx);
for (idx, inp) in inputs_weight.iter().enumerate() {
- sign_input!(sighash_parts, idx, 0, inp, sum_actual_sigs, opt_anchors);
+ sign_input!(sighash_parts, idx, 0, inp, sum_actual_sigs, channel_type_features);
inputs_total_weight += inp;
}
}
}
// Justice tx with 1 revoked HTLC-Success tx output
- for &opt_anchors in [false, true].iter() {
+ for channel_type_features in [ChannelTypeFeatures::only_static_remote_key(), ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies()].iter() {
let mut claim_tx = Transaction { version: 0, lock_time: PackedLockTime::ZERO, input: Vec::new(), output: Vec::new() };
let mut sum_actual_sigs = 0;
claim_tx.input.push(TxIn {
{
let mut sighash_parts = sighash::SighashCache::new(&mut claim_tx);
for (idx, inp) in inputs_weight.iter().enumerate() {
- sign_input!(sighash_parts, idx, 0, inp, sum_actual_sigs, opt_anchors);
+ sign_input!(sighash_parts, idx, 0, inp, sum_actual_sigs, channel_type_features);
inputs_total_weight += inp;
}
}
use core::mem::replace;
#[cfg(anchors)]
use core::mem::swap;
+use crate::ln::features::ChannelTypeFeatures;
const MAX_ALLOC_SIZE: usize = 64*1024;
.or_else(|| self.prev_holder_commitment.as_ref().map(|c| find_htlc(c)).flatten())
}
- pub(crate) fn opt_anchors(&self) -> bool {
- self.channel_transaction_parameters.opt_anchors.is_some()
+ pub(crate) fn channel_type_features(&self) -> &ChannelTypeFeatures {
+ &self.channel_transaction_parameters.channel_type_features
}
#[cfg(any(test,feature = "unsafe_revoked_tx_signing"))]
use crate::chain::onchaintx::ExternalHTLCClaim;
use crate::chain::onchaintx::OnchainTxHandler;
use crate::util::logger::Logger;
-use crate::util::ser::{Readable, Writer, Writeable};
+use crate::util::ser::{Readable, Writer, Writeable, RequiredWrapper};
use crate::io;
use crate::prelude::*;
use core::mem;
use core::ops::Deref;
use bitcoin::{PackedLockTime, Sequence, Witness};
+use crate::ln::features::ChannelTypeFeatures;
use super::chaininterface::LowerBoundedFeeEstimator;
const MAX_ALLOC_SIZE: usize = 64*1024;
-pub(crate) fn weight_revoked_offered_htlc(opt_anchors: bool) -> u64 {
+pub(crate) fn weight_revoked_offered_htlc(channel_type_features: &ChannelTypeFeatures) -> u64 {
// number_of_witness_elements + sig_length + revocation_sig + pubkey_length + revocationpubkey + witness_script_length + witness_script
const WEIGHT_REVOKED_OFFERED_HTLC: u64 = 1 + 1 + 73 + 1 + 33 + 1 + 133;
const WEIGHT_REVOKED_OFFERED_HTLC_ANCHORS: u64 = WEIGHT_REVOKED_OFFERED_HTLC + 3; // + OP_1 + OP_CSV + OP_DROP
- if opt_anchors { WEIGHT_REVOKED_OFFERED_HTLC_ANCHORS } else { WEIGHT_REVOKED_OFFERED_HTLC }
+ if channel_type_features.supports_anchors_zero_fee_htlc_tx() { WEIGHT_REVOKED_OFFERED_HTLC_ANCHORS } else { WEIGHT_REVOKED_OFFERED_HTLC }
}
-pub(crate) fn weight_revoked_received_htlc(opt_anchors: bool) -> u64 {
+pub(crate) fn weight_revoked_received_htlc(channel_type_features: &ChannelTypeFeatures) -> u64 {
// number_of_witness_elements + sig_length + revocation_sig + pubkey_length + revocationpubkey + witness_script_length + witness_script
const WEIGHT_REVOKED_RECEIVED_HTLC: u64 = 1 + 1 + 73 + 1 + 33 + 1 + 139;
const WEIGHT_REVOKED_RECEIVED_HTLC_ANCHORS: u64 = WEIGHT_REVOKED_RECEIVED_HTLC + 3; // + OP_1 + OP_CSV + OP_DROP
- if opt_anchors { WEIGHT_REVOKED_RECEIVED_HTLC_ANCHORS } else { WEIGHT_REVOKED_RECEIVED_HTLC }
+ if channel_type_features.supports_anchors_zero_fee_htlc_tx() { WEIGHT_REVOKED_RECEIVED_HTLC_ANCHORS } else { WEIGHT_REVOKED_RECEIVED_HTLC }
}
-pub(crate) fn weight_offered_htlc(opt_anchors: bool) -> u64 {
+pub(crate) fn weight_offered_htlc(channel_type_features: &ChannelTypeFeatures) -> u64 {
// number_of_witness_elements + sig_length + counterpartyhtlc_sig + preimage_length + preimage + witness_script_length + witness_script
const WEIGHT_OFFERED_HTLC: u64 = 1 + 1 + 73 + 1 + 32 + 1 + 133;
const WEIGHT_OFFERED_HTLC_ANCHORS: u64 = WEIGHT_OFFERED_HTLC + 3; // + OP_1 + OP_CSV + OP_DROP
- if opt_anchors { WEIGHT_OFFERED_HTLC_ANCHORS } else { WEIGHT_OFFERED_HTLC }
+ if channel_type_features.supports_anchors_zero_fee_htlc_tx() { WEIGHT_OFFERED_HTLC_ANCHORS } else { WEIGHT_OFFERED_HTLC }
}
-pub(crate) fn weight_received_htlc(opt_anchors: bool) -> u64 {
+pub(crate) fn weight_received_htlc(channel_type_features: &ChannelTypeFeatures) -> u64 {
// number_of_witness_elements + sig_length + counterpartyhtlc_sig + empty_vec_length + empty_vec + witness_script_length + witness_script
const WEIGHT_RECEIVED_HTLC: u64 = 1 + 1 + 73 + 1 + 1 + 1 + 139;
const WEIGHT_RECEIVED_HTLC_ANCHORS: u64 = WEIGHT_RECEIVED_HTLC + 3; // + OP_1 + OP_CSV + OP_DROP
- if opt_anchors { WEIGHT_RECEIVED_HTLC_ANCHORS } else { WEIGHT_RECEIVED_HTLC }
+ if channel_type_features.supports_anchors_zero_fee_htlc_tx() { WEIGHT_RECEIVED_HTLC_ANCHORS } else { WEIGHT_RECEIVED_HTLC }
}
// number_of_witness_elements + sig_length + revocation_sig + true_length + op_true + witness_script_length + witness_script
}
impl RevokedHTLCOutput {
- pub(crate) fn build(per_commitment_point: PublicKey, counterparty_delayed_payment_base_key: PublicKey, counterparty_htlc_base_key: PublicKey, per_commitment_key: SecretKey, amount: u64, htlc: HTLCOutputInCommitment, opt_anchors: bool) -> Self {
- let weight = if htlc.offered { weight_revoked_offered_htlc(opt_anchors) } else { weight_revoked_received_htlc(opt_anchors) };
+ pub(crate) fn build(per_commitment_point: PublicKey, counterparty_delayed_payment_base_key: PublicKey, counterparty_htlc_base_key: PublicKey, per_commitment_key: SecretKey, amount: u64, htlc: HTLCOutputInCommitment, channel_type_features: &ChannelTypeFeatures) -> Self {
+ let weight = if htlc.offered { weight_revoked_offered_htlc(channel_type_features) } else { weight_revoked_received_htlc(channel_type_features) };
RevokedHTLCOutput {
per_commitment_point,
counterparty_delayed_payment_base_key,
/// witnessScript.
///
/// The preimage is used as part of the witness.
+///
+/// Note that on upgrades, some features of existing outputs may be missed.
#[derive(Clone, PartialEq, Eq)]
pub(crate) struct CounterpartyOfferedHTLCOutput {
per_commitment_point: PublicKey,
counterparty_htlc_base_key: PublicKey,
preimage: PaymentPreimage,
htlc: HTLCOutputInCommitment,
- opt_anchors: Option<()>,
+ channel_type_features: ChannelTypeFeatures,
}
impl CounterpartyOfferedHTLCOutput {
- pub(crate) fn build(per_commitment_point: PublicKey, counterparty_delayed_payment_base_key: PublicKey, counterparty_htlc_base_key: PublicKey, preimage: PaymentPreimage, htlc: HTLCOutputInCommitment, opt_anchors: bool) -> Self {
+ pub(crate) fn build(per_commitment_point: PublicKey, counterparty_delayed_payment_base_key: PublicKey, counterparty_htlc_base_key: PublicKey, preimage: PaymentPreimage, htlc: HTLCOutputInCommitment, channel_type_features: ChannelTypeFeatures) -> Self {
CounterpartyOfferedHTLCOutput {
per_commitment_point,
counterparty_delayed_payment_base_key,
counterparty_htlc_base_key,
preimage,
htlc,
- opt_anchors: if opt_anchors { Some(()) } else { None },
+ channel_type_features,
}
}
+}
- fn opt_anchors(&self) -> bool {
- self.opt_anchors.is_some()
+impl Writeable for CounterpartyOfferedHTLCOutput {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
+ let legacy_deserialization_prevention_marker = chan_utils::legacy_deserialization_prevention_marker_for_channel_type_features(&self.channel_type_features);
+ write_tlv_fields!(writer, {
+ (0, self.per_commitment_point, required),
+ (2, self.counterparty_delayed_payment_base_key, required),
+ (4, self.counterparty_htlc_base_key, required),
+ (6, self.preimage, required),
+ (8, self.htlc, required),
+ (10, legacy_deserialization_prevention_marker, option),
+ (11, self.channel_type_features, required),
+ });
+ Ok(())
}
}
-impl_writeable_tlv_based!(CounterpartyOfferedHTLCOutput, {
- (0, per_commitment_point, required),
- (2, counterparty_delayed_payment_base_key, required),
- (4, counterparty_htlc_base_key, required),
- (6, preimage, required),
- (8, htlc, required),
- (10, opt_anchors, option),
-});
+impl Readable for CounterpartyOfferedHTLCOutput {
+ fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
+ let mut per_commitment_point = RequiredWrapper(None);
+ let mut counterparty_delayed_payment_base_key = RequiredWrapper(None);
+ let mut counterparty_htlc_base_key = RequiredWrapper(None);
+ let mut preimage = RequiredWrapper(None);
+ let mut htlc = RequiredWrapper(None);
+ let mut legacy_deserialization_prevention_marker: Option<()> = None;
+ let mut channel_type_features = None;
+
+ read_tlv_fields!(reader, {
+ (0, per_commitment_point, required),
+ (2, counterparty_delayed_payment_base_key, required),
+ (4, counterparty_htlc_base_key, required),
+ (6, preimage, required),
+ (8, htlc, required),
+ (10, legacy_deserialization_prevention_marker, option),
+ (11, channel_type_features, option),
+ });
+
+ Ok(Self {
+ per_commitment_point: per_commitment_point.0.unwrap(),
+ counterparty_delayed_payment_base_key: counterparty_delayed_payment_base_key.0.unwrap(),
+ counterparty_htlc_base_key: counterparty_htlc_base_key.0.unwrap(),
+ preimage: preimage.0.unwrap(),
+ htlc: htlc.0.unwrap(),
+ channel_type_features: channel_type_features.unwrap_or(ChannelTypeFeatures::only_static_remote_key())
+ })
+ }
+}
/// A struct to describe a HTLC output on a counterparty commitment transaction.
///
/// HTLCOutputInCommitment (hash, timelock, directon) and pubkeys are used to generate a suitable
/// witnessScript.
+///
+/// Note that on upgrades, some features of existing outputs may be missed.
#[derive(Clone, PartialEq, Eq)]
pub(crate) struct CounterpartyReceivedHTLCOutput {
per_commitment_point: PublicKey,
counterparty_delayed_payment_base_key: PublicKey,
counterparty_htlc_base_key: PublicKey,
htlc: HTLCOutputInCommitment,
- opt_anchors: Option<()>,
+ channel_type_features: ChannelTypeFeatures,
}
impl CounterpartyReceivedHTLCOutput {
- pub(crate) fn build(per_commitment_point: PublicKey, counterparty_delayed_payment_base_key: PublicKey, counterparty_htlc_base_key: PublicKey, htlc: HTLCOutputInCommitment, opt_anchors: bool) -> Self {
+ pub(crate) fn build(per_commitment_point: PublicKey, counterparty_delayed_payment_base_key: PublicKey, counterparty_htlc_base_key: PublicKey, htlc: HTLCOutputInCommitment, channel_type_features: ChannelTypeFeatures) -> Self {
CounterpartyReceivedHTLCOutput {
per_commitment_point,
counterparty_delayed_payment_base_key,
counterparty_htlc_base_key,
htlc,
- opt_anchors: if opt_anchors { Some(()) } else { None },
+ channel_type_features
}
}
+}
- fn opt_anchors(&self) -> bool {
- self.opt_anchors.is_some()
+impl Writeable for CounterpartyReceivedHTLCOutput {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
+ let legacy_deserialization_prevention_marker = chan_utils::legacy_deserialization_prevention_marker_for_channel_type_features(&self.channel_type_features);
+ write_tlv_fields!(writer, {
+ (0, self.per_commitment_point, required),
+ (2, self.counterparty_delayed_payment_base_key, required),
+ (4, self.counterparty_htlc_base_key, required),
+ (6, self.htlc, required),
+ (8, legacy_deserialization_prevention_marker, option),
+ (9, self.channel_type_features, required),
+ });
+ Ok(())
}
}
-impl_writeable_tlv_based!(CounterpartyReceivedHTLCOutput, {
- (0, per_commitment_point, required),
- (2, counterparty_delayed_payment_base_key, required),
- (4, counterparty_htlc_base_key, required),
- (6, htlc, required),
- (8, opt_anchors, option),
-});
+impl Readable for CounterpartyReceivedHTLCOutput {
+ fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
+ let mut per_commitment_point = RequiredWrapper(None);
+ let mut counterparty_delayed_payment_base_key = RequiredWrapper(None);
+ let mut counterparty_htlc_base_key = RequiredWrapper(None);
+ let mut htlc = RequiredWrapper(None);
+ let mut legacy_deserialization_prevention_marker: Option<()> = None;
+ let mut channel_type_features = None;
+
+ read_tlv_fields!(reader, {
+ (0, per_commitment_point, required),
+ (2, counterparty_delayed_payment_base_key, required),
+ (4, counterparty_htlc_base_key, required),
+ (6, htlc, required),
+ (8, legacy_deserialization_prevention_marker, option),
+ (9, channel_type_features, option),
+ });
+
+ Ok(Self {
+ per_commitment_point: per_commitment_point.0.unwrap(),
+ counterparty_delayed_payment_base_key: counterparty_delayed_payment_base_key.0.unwrap(),
+ counterparty_htlc_base_key: counterparty_htlc_base_key.0.unwrap(),
+ htlc: htlc.0.unwrap(),
+ channel_type_features: channel_type_features.unwrap_or(ChannelTypeFeatures::only_static_remote_key())
+ })
+ }
+}
/// A struct to describe a HTLC output on holder commitment transaction.
///
/// Either offered or received, the amount is always used as part of the bip143 sighash.
/// Preimage is only included as part of the witness in former case.
+///
+/// Note that on upgrades, some features of existing outputs may be missed.
#[derive(Clone, PartialEq, Eq)]
pub(crate) struct HolderHTLCOutput {
preimage: Option<PaymentPreimage>,
amount_msat: u64,
/// Defaults to 0 for HTLC-Success transactions, which have no expiry
cltv_expiry: u32,
- opt_anchors: Option<()>,
+ channel_type_features: ChannelTypeFeatures,
}
impl HolderHTLCOutput {
- pub(crate) fn build_offered(amount_msat: u64, cltv_expiry: u32, opt_anchors: bool) -> Self {
+ pub(crate) fn build_offered(amount_msat: u64, cltv_expiry: u32, channel_type_features: ChannelTypeFeatures) -> Self {
HolderHTLCOutput {
preimage: None,
amount_msat,
cltv_expiry,
- opt_anchors: if opt_anchors { Some(()) } else { None } ,
+ channel_type_features,
}
}
- pub(crate) fn build_accepted(preimage: PaymentPreimage, amount_msat: u64, opt_anchors: bool) -> Self {
+ pub(crate) fn build_accepted(preimage: PaymentPreimage, amount_msat: u64, channel_type_features: ChannelTypeFeatures) -> Self {
HolderHTLCOutput {
preimage: Some(preimage),
amount_msat,
cltv_expiry: 0,
- opt_anchors: if opt_anchors { Some(()) } else { None } ,
+ channel_type_features,
}
}
+}
- fn opt_anchors(&self) -> bool {
- self.opt_anchors.is_some()
+impl Writeable for HolderHTLCOutput {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
+ let legacy_deserialization_prevention_marker = chan_utils::legacy_deserialization_prevention_marker_for_channel_type_features(&self.channel_type_features);
+ write_tlv_fields!(writer, {
+ (0, self.amount_msat, required),
+ (2, self.cltv_expiry, required),
+ (4, self.preimage, option),
+ (6, legacy_deserialization_prevention_marker, option),
+ (7, self.channel_type_features, required),
+ });
+ Ok(())
}
}
-impl_writeable_tlv_based!(HolderHTLCOutput, {
- (0, amount_msat, required),
- (2, cltv_expiry, required),
- (4, preimage, option),
- (6, opt_anchors, option)
-});
+impl Readable for HolderHTLCOutput {
+ fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
+ let mut amount_msat = RequiredWrapper(None);
+ let mut cltv_expiry = RequiredWrapper(None);
+ let mut preimage = None;
+ let mut legacy_deserialization_prevention_marker: Option<()> = None;
+ let mut channel_type_features = None;
+
+ read_tlv_fields!(reader, {
+ (0, amount_msat, required),
+ (2, cltv_expiry, required),
+ (4, preimage, option),
+ (6, legacy_deserialization_prevention_marker, option),
+ (7, channel_type_features, option),
+ });
+
+ Ok(Self {
+ amount_msat: amount_msat.0.unwrap(),
+ cltv_expiry: cltv_expiry.0.unwrap(),
+ preimage,
+ channel_type_features: channel_type_features.unwrap_or(ChannelTypeFeatures::only_static_remote_key())
+ })
+ }
+}
/// A struct to describe the channel output on the funding transaction.
///
/// witnessScript is used as part of the witness redeeming the funding utxo.
+///
+/// Note that on upgrades, some features of existing outputs may be missed.
#[derive(Clone, PartialEq, Eq)]
pub(crate) struct HolderFundingOutput {
funding_redeemscript: Script,
funding_amount: Option<u64>,
- opt_anchors: Option<()>,
+ channel_type_features: ChannelTypeFeatures,
}
impl HolderFundingOutput {
- pub(crate) fn build(funding_redeemscript: Script, funding_amount: u64, opt_anchors: bool) -> Self {
+ pub(crate) fn build(funding_redeemscript: Script, funding_amount: u64, channel_type_features: ChannelTypeFeatures) -> Self {
HolderFundingOutput {
funding_redeemscript,
funding_amount: Some(funding_amount),
- opt_anchors: if opt_anchors { Some(()) } else { None },
+ channel_type_features,
}
}
+}
- fn opt_anchors(&self) -> bool {
- self.opt_anchors.is_some()
+impl Writeable for HolderFundingOutput {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
+ let legacy_deserialization_prevention_marker = chan_utils::legacy_deserialization_prevention_marker_for_channel_type_features(&self.channel_type_features);
+ write_tlv_fields!(writer, {
+ (0, self.funding_redeemscript, required),
+ (1, self.channel_type_features, required),
+ (2, legacy_deserialization_prevention_marker, option),
+ (3, self.funding_amount, option),
+ });
+ Ok(())
}
}
-impl_writeable_tlv_based!(HolderFundingOutput, {
- (0, funding_redeemscript, required),
- (2, opt_anchors, option),
- (3, funding_amount, option),
-});
+impl Readable for HolderFundingOutput {
+ fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
+ let mut funding_redeemscript = RequiredWrapper(None);
+ let mut legacy_deserialization_prevention_marker: Option<()> = None;
+ let mut channel_type_features = None;
+ let mut funding_amount = None;
+
+ read_tlv_fields!(reader, {
+ (0, funding_redeemscript, required),
+ (1, channel_type_features, option),
+ (2, legacy_deserialization_prevention_marker, option),
+ (3, funding_amount, option)
+ });
+
+ Ok(Self {
+ funding_redeemscript: funding_redeemscript.0.unwrap(),
+ channel_type_features: channel_type_features.unwrap_or(ChannelTypeFeatures::only_static_remote_key()),
+ funding_amount
+ })
+ }
+}
/// A wrapper encapsulating all in-protocol differing outputs types.
///
PackageSolvingData::CounterpartyOfferedHTLCOutput(ref outp) => outp.htlc.amount_msat / 1000,
PackageSolvingData::CounterpartyReceivedHTLCOutput(ref outp) => outp.htlc.amount_msat / 1000,
PackageSolvingData::HolderHTLCOutput(ref outp) => {
- debug_assert!(outp.opt_anchors());
+ debug_assert!(outp.channel_type_features.supports_anchors_zero_fee_htlc_tx());
outp.amount_msat / 1000
},
PackageSolvingData::HolderFundingOutput(ref outp) => {
- debug_assert!(outp.opt_anchors());
+ debug_assert!(outp.channel_type_features.supports_anchors_zero_fee_htlc_tx());
outp.funding_amount.unwrap()
}
};
match self {
PackageSolvingData::RevokedOutput(ref outp) => outp.weight as usize,
PackageSolvingData::RevokedHTLCOutput(ref outp) => outp.weight as usize,
- PackageSolvingData::CounterpartyOfferedHTLCOutput(ref outp) => weight_offered_htlc(outp.opt_anchors()) as usize,
- PackageSolvingData::CounterpartyReceivedHTLCOutput(ref outp) => weight_received_htlc(outp.opt_anchors()) as usize,
+ PackageSolvingData::CounterpartyOfferedHTLCOutput(ref outp) => weight_offered_htlc(&outp.channel_type_features) as usize,
+ PackageSolvingData::CounterpartyReceivedHTLCOutput(ref outp) => weight_received_htlc(&outp.channel_type_features) as usize,
PackageSolvingData::HolderHTLCOutput(ref outp) => {
- debug_assert!(outp.opt_anchors());
+ debug_assert!(outp.channel_type_features.supports_anchors_zero_fee_htlc_tx());
if outp.preimage.is_none() {
- weight_offered_htlc(true) as usize
+ weight_offered_htlc(&outp.channel_type_features) as usize
} else {
- weight_received_htlc(true) as usize
+ weight_received_htlc(&outp.channel_type_features) as usize
}
},
// Since HolderFundingOutput maps to an untractable package that is already signed, its
},
PackageSolvingData::RevokedHTLCOutput(ref outp) => {
let chan_keys = TxCreationKeys::derive_new(&onchain_handler.secp_ctx, &outp.per_commitment_point, &outp.counterparty_delayed_payment_base_key, &outp.counterparty_htlc_base_key, &onchain_handler.signer.pubkeys().revocation_basepoint, &onchain_handler.signer.pubkeys().htlc_basepoint);
- let witness_script = chan_utils::get_htlc_redeemscript_with_explicit_keys(&outp.htlc, onchain_handler.opt_anchors(), &chan_keys.broadcaster_htlc_key, &chan_keys.countersignatory_htlc_key, &chan_keys.revocation_key);
+ let witness_script = chan_utils::get_htlc_redeemscript_with_explicit_keys(&outp.htlc, &onchain_handler.channel_type_features(), &chan_keys.broadcaster_htlc_key, &chan_keys.countersignatory_htlc_key, &chan_keys.revocation_key);
//TODO: should we panic on signer failure ?
if let Ok(sig) = onchain_handler.signer.sign_justice_revoked_htlc(&bumped_tx, i, outp.amount, &outp.per_commitment_key, &outp.htlc, &onchain_handler.secp_ctx) {
let mut ser_sig = sig.serialize_der().to_vec();
},
PackageSolvingData::CounterpartyOfferedHTLCOutput(ref outp) => {
let chan_keys = TxCreationKeys::derive_new(&onchain_handler.secp_ctx, &outp.per_commitment_point, &outp.counterparty_delayed_payment_base_key, &outp.counterparty_htlc_base_key, &onchain_handler.signer.pubkeys().revocation_basepoint, &onchain_handler.signer.pubkeys().htlc_basepoint);
- let witness_script = chan_utils::get_htlc_redeemscript_with_explicit_keys(&outp.htlc, onchain_handler.opt_anchors(), &chan_keys.broadcaster_htlc_key, &chan_keys.countersignatory_htlc_key, &chan_keys.revocation_key);
+ let witness_script = chan_utils::get_htlc_redeemscript_with_explicit_keys(&outp.htlc, &onchain_handler.channel_type_features(), &chan_keys.broadcaster_htlc_key, &chan_keys.countersignatory_htlc_key, &chan_keys.revocation_key);
if let Ok(sig) = onchain_handler.signer.sign_counterparty_htlc_transaction(&bumped_tx, i, &outp.htlc.amount_msat / 1000, &outp.per_commitment_point, &outp.htlc, &onchain_handler.secp_ctx) {
let mut ser_sig = sig.serialize_der().to_vec();
},
PackageSolvingData::CounterpartyReceivedHTLCOutput(ref outp) => {
let chan_keys = TxCreationKeys::derive_new(&onchain_handler.secp_ctx, &outp.per_commitment_point, &outp.counterparty_delayed_payment_base_key, &outp.counterparty_htlc_base_key, &onchain_handler.signer.pubkeys().revocation_basepoint, &onchain_handler.signer.pubkeys().htlc_basepoint);
- let witness_script = chan_utils::get_htlc_redeemscript_with_explicit_keys(&outp.htlc, onchain_handler.opt_anchors(), &chan_keys.broadcaster_htlc_key, &chan_keys.countersignatory_htlc_key, &chan_keys.revocation_key);
+ let witness_script = chan_utils::get_htlc_redeemscript_with_explicit_keys(&outp.htlc, &onchain_handler.channel_type_features(), &chan_keys.broadcaster_htlc_key, &chan_keys.countersignatory_htlc_key, &chan_keys.revocation_key);
if let Ok(sig) = onchain_handler.signer.sign_counterparty_htlc_transaction(&bumped_tx, i, &outp.htlc.amount_msat / 1000, &outp.per_commitment_point, &outp.htlc, &onchain_handler.secp_ctx) {
let mut ser_sig = sig.serialize_der().to_vec();
fn get_finalized_tx<Signer: WriteableEcdsaChannelSigner>(&self, outpoint: &BitcoinOutPoint, onchain_handler: &mut OnchainTxHandler<Signer>) -> Option<Transaction> {
match self {
PackageSolvingData::HolderHTLCOutput(ref outp) => {
- debug_assert!(!outp.opt_anchors());
+ debug_assert!(!outp.channel_type_features.supports_anchors_zero_fee_htlc_tx());
return onchain_handler.get_fully_signed_htlc_tx(outpoint, &outp.preimage);
}
PackageSolvingData::HolderFundingOutput(ref outp) => {
PackageSolvingData::RevokedHTLCOutput(..) => { (PackageMalleability::Malleable, true) },
PackageSolvingData::CounterpartyOfferedHTLCOutput(..) => { (PackageMalleability::Malleable, true) },
PackageSolvingData::CounterpartyReceivedHTLCOutput(..) => { (PackageMalleability::Malleable, false) },
- PackageSolvingData::HolderHTLCOutput(ref outp) => if outp.opt_anchors() {
+ PackageSolvingData::HolderHTLCOutput(ref outp) => if outp.channel_type_features.supports_anchors_zero_fee_htlc_tx() {
(PackageMalleability::Malleable, outp.preimage.is_some())
} else {
(PackageMalleability::Untractable, false)
for (previous_output, input) in &self.inputs {
match input {
PackageSolvingData::HolderHTLCOutput(ref outp) => {
- debug_assert!(outp.opt_anchors());
+ debug_assert!(outp.channel_type_features.supports_anchors_zero_fee_htlc_tx());
onchain_handler.generate_external_htlc_claim(&previous_output, &outp.preimage).map(|htlc| {
htlcs.get_or_insert_with(|| Vec::with_capacity(self.inputs.len())).push(htlc);
});
/// attached to help the spending transaction reach confirmation.
pub(crate) fn requires_external_funding(&self) -> bool {
self.inputs.iter().find(|input| match input.1 {
- PackageSolvingData::HolderFundingOutput(ref outp) => outp.opt_anchors(),
- PackageSolvingData::HolderHTLCOutput(ref outp) => outp.opt_anchors(),
+ PackageSolvingData::HolderFundingOutput(ref outp) => outp.channel_type_features.supports_anchors_zero_fee_htlc_tx(),
+ PackageSolvingData::HolderHTLCOutput(ref outp) => outp.channel_type_features.supports_anchors_zero_fee_htlc_tx(),
_ => false,
}).is_some()
}
use bitcoin::secp256k1::{PublicKey,SecretKey};
use bitcoin::secp256k1::Secp256k1;
+ use crate::ln::features::ChannelTypeFeatures;
macro_rules! dumb_revk_output {
($secp_ctx: expr, $is_counterparty_balance_on_anchors: expr) => {
() => {
{
let preimage = PaymentPreimage([2;32]);
- PackageSolvingData::HolderHTLCOutput(HolderHTLCOutput::build_accepted(preimage, 0, false))
+ PackageSolvingData::HolderHTLCOutput(HolderHTLCOutput::build_accepted(preimage, 0, ChannelTypeFeatures::only_static_remote_key()))
}
}
}
let txid = Txid::from_hex("c2d4449afa8d26140898dd54d3390b057ba2a5afcf03ba29d7dc0d8b9ffe966e").unwrap();
let secp_ctx = Secp256k1::new();
let revk_outp = dumb_revk_output!(secp_ctx, false);
- let counterparty_outp = dumb_counterparty_output!(secp_ctx, 0, false);
+ let counterparty_outp = dumb_counterparty_output!(secp_ctx, 0, ChannelTypeFeatures::only_static_remote_key());
let mut revoked_package = PackageTemplate::build_package(txid, 0, revk_outp, 1000, 100);
let counterparty_package = PackageTemplate::build_package(txid, 1, counterparty_outp, 1000, 100);
fn test_package_amounts() {
let txid = Txid::from_hex("c2d4449afa8d26140898dd54d3390b057ba2a5afcf03ba29d7dc0d8b9ffe966e").unwrap();
let secp_ctx = Secp256k1::new();
- let counterparty_outp = dumb_counterparty_output!(secp_ctx, 1_000_000, false);
+ let counterparty_outp = dumb_counterparty_output!(secp_ctx, 1_000_000, ChannelTypeFeatures::only_static_remote_key());
let package = PackageTemplate::build_package(txid, 0, counterparty_outp, 1000, 100);
assert_eq!(package.package_amount(), 1000);
}
{
- for &opt_anchors in [false, true].iter() {
- let counterparty_outp = dumb_counterparty_output!(secp_ctx, 1_000_000, opt_anchors);
+ for channel_type_features in [ChannelTypeFeatures::only_static_remote_key(), ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies()].iter() {
+ let counterparty_outp = dumb_counterparty_output!(secp_ctx, 1_000_000, channel_type_features.clone());
let package = PackageTemplate::build_package(txid, 0, counterparty_outp, 1000, 100);
- assert_eq!(package.package_weight(&Script::new()), weight_sans_output + weight_received_htlc(opt_anchors) as usize);
+ assert_eq!(package.package_weight(&Script::new()), weight_sans_output + weight_received_htlc(channel_type_features) as usize);
}
}
{
- for &opt_anchors in [false, true].iter() {
- let counterparty_outp = dumb_counterparty_offered_output!(secp_ctx, 1_000_000, opt_anchors);
+ for channel_type_features in [ChannelTypeFeatures::only_static_remote_key(), ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies()].iter() {
+ let counterparty_outp = dumb_counterparty_offered_output!(secp_ctx, 1_000_000, channel_type_features.clone());
let package = PackageTemplate::build_package(txid, 0, counterparty_outp, 1000, 100);
- assert_eq!(package.package_weight(&Script::new()), weight_sans_output + weight_offered_htlc(opt_anchors) as usize);
+ assert_eq!(package.package_weight(&Script::new()), weight_sans_output + weight_offered_htlc(channel_type_features) as usize);
}
}
}
use bitcoin::secp256k1;
use bitcoin::secp256k1::{PublicKey, Secp256k1};
use bitcoin::secp256k1::ecdsa::Signature;
+use crate::ln::features::ChannelTypeFeatures;
const EMPTY_SCRIPT_SIG_WEIGHT: u64 = 1 /* empty script_sig */ * WITNESS_SCALE_FACTOR as u64;
/// Returns the unsigned transaction input spending the HTLC output in the commitment
/// transaction.
pub fn unsigned_tx_input(&self) -> TxIn {
- chan_utils::build_htlc_input(&self.commitment_txid, &self.htlc, true /* opt_anchors */)
+ chan_utils::build_htlc_input(&self.commitment_txid, &self.htlc, &ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies())
}
/// Returns the delayed output created as a result of spending the HTLC output in the commitment
secp, per_commitment_point, &counterparty_keys.revocation_basepoint
);
chan_utils::build_htlc_output(
- 0 /* feerate_per_kw */, channel_params.contest_delay(), &self.htlc, true /* opt_anchors */,
- false /* use_non_zero_fee_anchors */, &broadcaster_delayed_key, &counterparty_revocation_key
+ 0 /* feerate_per_kw */, channel_params.contest_delay(), &self.htlc,
+ &ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies(), &broadcaster_delayed_key, &counterparty_revocation_key
)
}
secp, per_commitment_point, &counterparty_keys.revocation_basepoint
);
chan_utils::get_htlc_redeemscript_with_explicit_keys(
- &self.htlc, true /* opt_anchors */, &broadcaster_htlc_key, &counterparty_htlc_key,
+ &self.htlc, &ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies(), &broadcaster_htlc_key, &counterparty_htlc_key,
&counterparty_revocation_key,
)
}
/// transaction.
pub fn tx_input_witness(&self, signature: &Signature, witness_script: &Script) -> Witness {
chan_utils::build_htlc_input_witness(
- signature, &self.counterparty_sig, &self.preimage, witness_script, true /* opt_anchors */
+ signature, &self.counterparty_sig, &self.preimage, witness_script, &ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies() /* opt_anchors */
)
}
}
use crate::sign::EntropySource;
use crate::ln::{PaymentHash, PaymentPreimage};
use crate::ln::msgs::DecodeError;
-use crate::util::ser::{Readable, Writeable, Writer};
+use crate::util::ser::{Readable, RequiredWrapper, Writeable, Writer};
use crate::util::transaction_utils;
use bitcoin::secp256k1::{SecretKey, PublicKey, Scalar};
/// Gets the weight for an HTLC-Success transaction.
#[inline]
-pub fn htlc_success_tx_weight(opt_anchors: bool) -> u64 {
+pub fn htlc_success_tx_weight(channel_type_features: &ChannelTypeFeatures) -> u64 {
const HTLC_SUCCESS_TX_WEIGHT: u64 = 703;
const HTLC_SUCCESS_ANCHOR_TX_WEIGHT: u64 = 706;
- if opt_anchors { HTLC_SUCCESS_ANCHOR_TX_WEIGHT } else { HTLC_SUCCESS_TX_WEIGHT }
+ if channel_type_features.supports_anchors_zero_fee_htlc_tx() { HTLC_SUCCESS_ANCHOR_TX_WEIGHT } else { HTLC_SUCCESS_TX_WEIGHT }
}
/// Gets the weight for an HTLC-Timeout transaction.
#[inline]
-pub fn htlc_timeout_tx_weight(opt_anchors: bool) -> u64 {
+pub fn htlc_timeout_tx_weight(channel_type_features: &ChannelTypeFeatures) -> u64 {
const HTLC_TIMEOUT_TX_WEIGHT: u64 = 663;
const HTLC_TIMEOUT_ANCHOR_TX_WEIGHT: u64 = 666;
- if opt_anchors { HTLC_TIMEOUT_ANCHOR_TX_WEIGHT } else { HTLC_TIMEOUT_TX_WEIGHT }
+ if channel_type_features.supports_anchors_zero_fee_htlc_tx() { HTLC_TIMEOUT_ANCHOR_TX_WEIGHT } else { HTLC_TIMEOUT_TX_WEIGHT }
}
/// Describes the type of HTLC claim as determined by analyzing the witness.
});
#[inline]
-pub(crate) fn get_htlc_redeemscript_with_explicit_keys(htlc: &HTLCOutputInCommitment, opt_anchors: bool, broadcaster_htlc_key: &PublicKey, countersignatory_htlc_key: &PublicKey, revocation_key: &PublicKey) -> Script {
+pub(crate) fn get_htlc_redeemscript_with_explicit_keys(htlc: &HTLCOutputInCommitment, channel_type_features: &ChannelTypeFeatures, broadcaster_htlc_key: &PublicKey, countersignatory_htlc_key: &PublicKey, revocation_key: &PublicKey) -> Script {
let payment_hash160 = Ripemd160::hash(&htlc.payment_hash.0[..]).into_inner();
if htlc.offered {
let mut bldr = Builder::new().push_opcode(opcodes::all::OP_DUP)
.push_opcode(opcodes::all::OP_EQUALVERIFY)
.push_opcode(opcodes::all::OP_CHECKSIG)
.push_opcode(opcodes::all::OP_ENDIF);
- if opt_anchors {
+ if channel_type_features.supports_anchors_zero_fee_htlc_tx() {
bldr = bldr.push_opcode(opcodes::all::OP_PUSHNUM_1)
.push_opcode(opcodes::all::OP_CSV)
.push_opcode(opcodes::all::OP_DROP);
.push_opcode(opcodes::all::OP_DROP)
.push_opcode(opcodes::all::OP_CHECKSIG)
.push_opcode(opcodes::all::OP_ENDIF);
- if opt_anchors {
+ if channel_type_features.supports_anchors_zero_fee_htlc_tx() {
bldr = bldr.push_opcode(opcodes::all::OP_PUSHNUM_1)
.push_opcode(opcodes::all::OP_CSV)
.push_opcode(opcodes::all::OP_DROP);
/// Gets the witness redeemscript for an HTLC output in a commitment transaction. Note that htlc
/// does not need to have its previous_output_index filled.
#[inline]
-pub fn get_htlc_redeemscript(htlc: &HTLCOutputInCommitment, opt_anchors: bool, keys: &TxCreationKeys) -> Script {
- get_htlc_redeemscript_with_explicit_keys(htlc, opt_anchors, &keys.broadcaster_htlc_key, &keys.countersignatory_htlc_key, &keys.revocation_key)
+pub fn get_htlc_redeemscript(htlc: &HTLCOutputInCommitment, channel_type_features: &ChannelTypeFeatures, keys: &TxCreationKeys) -> Script {
+ get_htlc_redeemscript_with_explicit_keys(htlc, channel_type_features, &keys.broadcaster_htlc_key, &keys.countersignatory_htlc_key, &keys.revocation_key)
}
/// Gets the redeemscript for a funding output from the two funding public keys.
///
/// Panics if htlc.transaction_output_index.is_none() (as such HTLCs do not appear in the
/// commitment transaction).
-pub fn build_htlc_transaction(commitment_txid: &Txid, feerate_per_kw: u32, contest_delay: u16, htlc: &HTLCOutputInCommitment, opt_anchors: bool, use_non_zero_fee_anchors: bool, broadcaster_delayed_payment_key: &PublicKey, revocation_key: &PublicKey) -> Transaction {
+pub fn build_htlc_transaction(commitment_txid: &Txid, feerate_per_kw: u32, contest_delay: u16, htlc: &HTLCOutputInCommitment, channel_type_features: &ChannelTypeFeatures, broadcaster_delayed_payment_key: &PublicKey, revocation_key: &PublicKey) -> Transaction {
let mut txins: Vec<TxIn> = Vec::new();
- txins.push(build_htlc_input(commitment_txid, htlc, opt_anchors));
+ txins.push(build_htlc_input(commitment_txid, htlc, channel_type_features));
let mut txouts: Vec<TxOut> = Vec::new();
txouts.push(build_htlc_output(
- feerate_per_kw, contest_delay, htlc, opt_anchors, use_non_zero_fee_anchors,
+ feerate_per_kw, contest_delay, htlc, channel_type_features,
broadcaster_delayed_payment_key, revocation_key
));
}
}
-pub(crate) fn build_htlc_input(commitment_txid: &Txid, htlc: &HTLCOutputInCommitment, opt_anchors: bool) -> TxIn {
+pub(crate) fn build_htlc_input(commitment_txid: &Txid, htlc: &HTLCOutputInCommitment, channel_type_features: &ChannelTypeFeatures) -> TxIn {
TxIn {
previous_output: OutPoint {
txid: commitment_txid.clone(),
vout: htlc.transaction_output_index.expect("Can't build an HTLC transaction for a dust output"),
},
script_sig: Script::new(),
- sequence: Sequence(if opt_anchors { 1 } else { 0 }),
+ sequence: Sequence(if channel_type_features.supports_anchors_zero_fee_htlc_tx() { 1 } else { 0 }),
witness: Witness::new(),
}
}
pub(crate) fn build_htlc_output(
- feerate_per_kw: u32, contest_delay: u16, htlc: &HTLCOutputInCommitment, opt_anchors: bool,
- use_non_zero_fee_anchors: bool, broadcaster_delayed_payment_key: &PublicKey, revocation_key: &PublicKey
+ feerate_per_kw: u32, contest_delay: u16, htlc: &HTLCOutputInCommitment, channel_type_features: &ChannelTypeFeatures, broadcaster_delayed_payment_key: &PublicKey, revocation_key: &PublicKey
) -> TxOut {
let weight = if htlc.offered {
- htlc_timeout_tx_weight(opt_anchors)
+ htlc_timeout_tx_weight(channel_type_features)
} else {
- htlc_success_tx_weight(opt_anchors)
+ htlc_success_tx_weight(channel_type_features)
};
- let output_value = if opt_anchors && !use_non_zero_fee_anchors {
+ let output_value = if channel_type_features.supports_anchors_zero_fee_htlc_tx() && !channel_type_features.supports_anchors_nonzero_fee_htlc_tx() {
htlc.amount_msat / 1000
} else {
let total_fee = feerate_per_kw as u64 * weight / 1000;
/// Returns the witness required to satisfy and spend a HTLC input.
pub fn build_htlc_input_witness(
local_sig: &Signature, remote_sig: &Signature, preimage: &Option<PaymentPreimage>,
- redeem_script: &Script, opt_anchors: bool,
+ redeem_script: &Script, channel_type_features: &ChannelTypeFeatures,
) -> Witness {
- let remote_sighash_type = if opt_anchors {
+ let remote_sighash_type = if channel_type_features.supports_anchors_zero_fee_htlc_tx() {
EcdsaSighashType::SinglePlusAnyoneCanPay
} else {
EcdsaSighashType::All
pub counterparty_parameters: Option<CounterpartyChannelTransactionParameters>,
/// The late-bound funding outpoint
pub funding_outpoint: Option<chain::transaction::OutPoint>,
- /// Are anchors (zero fee HTLC transaction variant) used for this channel. Boolean is
- /// serialization backwards-compatible.
- pub opt_anchors: Option<()>,
- /// Are non-zero-fee anchors are enabled (used in conjuction with opt_anchors)
- /// It is intended merely for backwards compatibility with signers that need it.
- /// There is no support for this feature in LDK channel negotiation.
- pub opt_non_zero_fee_anchors: Option<()>,
+ /// This channel's type, as negotiated during channel open. For old objects where this field
+ /// wasn't serialized, it will default to static_remote_key at deserialization.
+ pub channel_type_features: ChannelTypeFeatures
}
/// Late-bound per-channel counterparty data used to build transactions.
(2, selected_contest_delay, required),
});
-impl_writeable_tlv_based!(ChannelTransactionParameters, {
- (0, holder_pubkeys, required),
- (2, holder_selected_contest_delay, required),
- (4, is_outbound_from_holder, required),
- (6, counterparty_parameters, option),
- (8, funding_outpoint, option),
- (10, opt_anchors, option),
- (12, opt_non_zero_fee_anchors, option),
-});
+impl Writeable for ChannelTransactionParameters {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
+ let legacy_deserialization_prevention_marker = legacy_deserialization_prevention_marker_for_channel_type_features(&self.channel_type_features);
+ write_tlv_fields!(writer, {
+ (0, self.holder_pubkeys, required),
+ (2, self.holder_selected_contest_delay, required),
+ (4, self.is_outbound_from_holder, required),
+ (6, self.counterparty_parameters, option),
+ (8, self.funding_outpoint, option),
+ (10, legacy_deserialization_prevention_marker, option),
+ (11, self.channel_type_features, required),
+ });
+ Ok(())
+ }
+}
+
+impl Readable for ChannelTransactionParameters {
+ fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
+ let mut holder_pubkeys = RequiredWrapper(None);
+ let mut holder_selected_contest_delay = RequiredWrapper(None);
+ let mut is_outbound_from_holder = RequiredWrapper(None);
+ let mut counterparty_parameters = None;
+ let mut funding_outpoint = None;
+ let mut legacy_deserialization_prevention_marker: Option<()> = None;
+ let mut channel_type_features = None;
+
+ read_tlv_fields!(reader, {
+ (0, holder_pubkeys, required),
+ (2, holder_selected_contest_delay, required),
+ (4, is_outbound_from_holder, required),
+ (6, counterparty_parameters, option),
+ (8, funding_outpoint, option),
+ (10, legacy_deserialization_prevention_marker, option),
+ (11, channel_type_features, option),
+ });
+
+ Ok(Self {
+ holder_pubkeys: holder_pubkeys.0.unwrap(),
+ holder_selected_contest_delay: holder_selected_contest_delay.0.unwrap(),
+ is_outbound_from_holder: is_outbound_from_holder.0.unwrap(),
+ counterparty_parameters,
+ funding_outpoint,
+ channel_type_features: channel_type_features.unwrap_or(ChannelTypeFeatures::only_static_remote_key())
+ })
+ }
+}
/// Static channel fields used to build transactions given per-commitment fields, organized by
/// broadcaster/countersignatory.
}
/// Whether to use anchors for this channel
- pub fn opt_anchors(&self) -> bool {
- self.inner.opt_anchors.is_some()
+ pub fn channel_type_features(&self) -> &ChannelTypeFeatures {
+ &self.inner.channel_type_features
}
}
is_outbound_from_holder: false,
counterparty_parameters: Some(CounterpartyChannelTransactionParameters { pubkeys: channel_pubkeys.clone(), selected_contest_delay: 0 }),
funding_outpoint: Some(chain::transaction::OutPoint { txid: Txid::all_zeros(), index: 0 }),
- opt_anchors: None,
- opt_non_zero_fee_anchors: None,
+ channel_type_features: ChannelTypeFeatures::only_static_remote_key(),
};
let mut counterparty_htlc_sigs = Vec::new();
for _ in 0..htlcs.len() {
counterparty_htlc_sigs.push(dummy_sig);
}
- let inner = CommitmentTransaction::new_with_auxiliary_htlc_data(0, 0, 0, false, dummy_key.clone(), dummy_key.clone(), keys, 0, htlcs, &channel_parameters.as_counterparty_broadcastable());
+ let inner = CommitmentTransaction::new_with_auxiliary_htlc_data(0, 0, 0, dummy_key.clone(), dummy_key.clone(), keys, 0, htlcs, &channel_parameters.as_counterparty_broadcastable());
htlcs.sort_by_key(|htlc| htlc.0.transaction_output_index);
HolderCommitmentTransaction {
inner,
to_countersignatory_value_sat: u64,
feerate_per_kw: u32,
htlcs: Vec<HTLCOutputInCommitment>,
- // A boolean that is serialization backwards-compatible
- opt_anchors: Option<()>,
- // Whether non-zero-fee anchors should be used
- opt_non_zero_fee_anchors: Option<()>,
+ // Note that on upgrades, some features of existing outputs may be missed.
+ channel_type_features: ChannelTypeFeatures,
// A cache of the parties' pubkeys required to construct the transaction, see doc for trust()
keys: TxCreationKeys,
// For access to the pre-built transaction, see doc for trust()
self.to_countersignatory_value_sat == o.to_countersignatory_value_sat &&
self.feerate_per_kw == o.feerate_per_kw &&
self.htlcs == o.htlcs &&
- self.opt_anchors == o.opt_anchors &&
+ self.channel_type_features == o.channel_type_features &&
self.keys == o.keys;
if eq {
debug_assert_eq!(self.built.transaction, o.built.transaction);
}
}
-impl_writeable_tlv_based!(CommitmentTransaction, {
- (0, commitment_number, required),
- (2, to_broadcaster_value_sat, required),
- (4, to_countersignatory_value_sat, required),
- (6, feerate_per_kw, required),
- (8, keys, required),
- (10, built, required),
- (12, htlcs, vec_type),
- (14, opt_anchors, option),
- (16, opt_non_zero_fee_anchors, option),
-});
+impl Writeable for CommitmentTransaction {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
+ let legacy_deserialization_prevention_marker = legacy_deserialization_prevention_marker_for_channel_type_features(&self.channel_type_features);
+ write_tlv_fields!(writer, {
+ (0, self.commitment_number, required),
+ (2, self.to_broadcaster_value_sat, required),
+ (4, self.to_countersignatory_value_sat, required),
+ (6, self.feerate_per_kw, required),
+ (8, self.keys, required),
+ (10, self.built, required),
+ (12, self.htlcs, vec_type),
+ (14, legacy_deserialization_prevention_marker, option),
+ (15, self.channel_type_features, required),
+ });
+ Ok(())
+ }
+}
+
+impl Readable for CommitmentTransaction {
+ fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
+ let mut commitment_number = RequiredWrapper(None);
+ let mut to_broadcaster_value_sat = RequiredWrapper(None);
+ let mut to_countersignatory_value_sat = RequiredWrapper(None);
+ let mut feerate_per_kw = RequiredWrapper(None);
+ let mut keys = RequiredWrapper(None);
+ let mut built = RequiredWrapper(None);
+ _init_tlv_field_var!(htlcs, vec_type);
+ let mut legacy_deserialization_prevention_marker: Option<()> = None;
+ let mut channel_type_features = None;
+
+ read_tlv_fields!(reader, {
+ (0, commitment_number, required),
+ (2, to_broadcaster_value_sat, required),
+ (4, to_countersignatory_value_sat, required),
+ (6, feerate_per_kw, required),
+ (8, keys, required),
+ (10, built, required),
+ (12, htlcs, vec_type),
+ (14, legacy_deserialization_prevention_marker, option),
+ (15, channel_type_features, option),
+ });
+
+ Ok(Self {
+ commitment_number: commitment_number.0.unwrap(),
+ to_broadcaster_value_sat: to_broadcaster_value_sat.0.unwrap(),
+ to_countersignatory_value_sat: to_countersignatory_value_sat.0.unwrap(),
+ feerate_per_kw: feerate_per_kw.0.unwrap(),
+ keys: keys.0.unwrap(),
+ built: built.0.unwrap(),
+ htlcs: _init_tlv_based_struct_field!(htlcs, vec_type),
+ channel_type_features: channel_type_features.unwrap_or(ChannelTypeFeatures::only_static_remote_key())
+ })
+ }
+}
impl CommitmentTransaction {
/// Construct an object of the class while assigning transaction output indices to HTLCs.
/// Only include HTLCs that are above the dust limit for the channel.
///
/// This is not exported to bindings users due to the generic though we likely should expose a version without
- pub fn new_with_auxiliary_htlc_data<T>(commitment_number: u64, to_broadcaster_value_sat: u64, to_countersignatory_value_sat: u64, opt_anchors: bool, broadcaster_funding_key: PublicKey, countersignatory_funding_key: PublicKey, keys: TxCreationKeys, feerate_per_kw: u32, htlcs_with_aux: &mut Vec<(HTLCOutputInCommitment, T)>, channel_parameters: &DirectedChannelTransactionParameters) -> CommitmentTransaction {
+ pub fn new_with_auxiliary_htlc_data<T>(commitment_number: u64, to_broadcaster_value_sat: u64, to_countersignatory_value_sat: u64, broadcaster_funding_key: PublicKey, countersignatory_funding_key: PublicKey, keys: TxCreationKeys, feerate_per_kw: u32, htlcs_with_aux: &mut Vec<(HTLCOutputInCommitment, T)>, channel_parameters: &DirectedChannelTransactionParameters) -> CommitmentTransaction {
// Sort outputs and populate output indices while keeping track of the auxiliary data
- let (outputs, htlcs) = Self::internal_build_outputs(&keys, to_broadcaster_value_sat, to_countersignatory_value_sat, htlcs_with_aux, channel_parameters, opt_anchors, &broadcaster_funding_key, &countersignatory_funding_key).unwrap();
+ let (outputs, htlcs) = Self::internal_build_outputs(&keys, to_broadcaster_value_sat, to_countersignatory_value_sat, htlcs_with_aux, channel_parameters, &broadcaster_funding_key, &countersignatory_funding_key).unwrap();
let (obscured_commitment_transaction_number, txins) = Self::internal_build_inputs(commitment_number, channel_parameters);
let transaction = Self::make_transaction(obscured_commitment_transaction_number, txins, outputs);
to_countersignatory_value_sat,
feerate_per_kw,
htlcs,
- opt_anchors: if opt_anchors { Some(()) } else { None },
+ channel_type_features: channel_parameters.channel_type_features().clone(),
keys,
built: BuiltCommitmentTransaction {
transaction,
txid
},
- opt_non_zero_fee_anchors: None,
}
}
///
/// This is not exported to bindings users due to move, and also not likely to be useful for binding users
pub fn with_non_zero_fee_anchors(mut self) -> Self {
- self.opt_non_zero_fee_anchors = Some(());
+ self.channel_type_features.set_anchors_nonzero_fee_htlc_tx_required();
self
}
let (obscured_commitment_transaction_number, txins) = Self::internal_build_inputs(self.commitment_number, channel_parameters);
let mut htlcs_with_aux = self.htlcs.iter().map(|h| (h.clone(), ())).collect();
- let (outputs, _) = Self::internal_build_outputs(keys, self.to_broadcaster_value_sat, self.to_countersignatory_value_sat, &mut htlcs_with_aux, channel_parameters, self.opt_anchors.is_some(), broadcaster_funding_key, countersignatory_funding_key)?;
+ let (outputs, _) = Self::internal_build_outputs(keys, self.to_broadcaster_value_sat, self.to_countersignatory_value_sat, &mut htlcs_with_aux, channel_parameters, broadcaster_funding_key, countersignatory_funding_key)?;
let transaction = Self::make_transaction(obscured_commitment_transaction_number, txins, outputs);
let txid = transaction.txid();
// - initial sorting of outputs / HTLCs in the constructor, in which case T is auxiliary data the
// caller needs to have sorted together with the HTLCs so it can keep track of the output index
// - building of a bitcoin transaction during a verify() call, in which case T is just ()
- fn internal_build_outputs<T>(keys: &TxCreationKeys, to_broadcaster_value_sat: u64, to_countersignatory_value_sat: u64, htlcs_with_aux: &mut Vec<(HTLCOutputInCommitment, T)>, channel_parameters: &DirectedChannelTransactionParameters, opt_anchors: bool, broadcaster_funding_key: &PublicKey, countersignatory_funding_key: &PublicKey) -> Result<(Vec<TxOut>, Vec<HTLCOutputInCommitment>), ()> {
+ fn internal_build_outputs<T>(keys: &TxCreationKeys, to_broadcaster_value_sat: u64, to_countersignatory_value_sat: u64, htlcs_with_aux: &mut Vec<(HTLCOutputInCommitment, T)>, channel_parameters: &DirectedChannelTransactionParameters, broadcaster_funding_key: &PublicKey, countersignatory_funding_key: &PublicKey) -> Result<(Vec<TxOut>, Vec<HTLCOutputInCommitment>), ()> {
let countersignatory_pubkeys = channel_parameters.countersignatory_pubkeys();
let contest_delay = channel_parameters.contest_delay();
let mut txouts: Vec<(TxOut, Option<&mut HTLCOutputInCommitment>)> = Vec::new();
if to_countersignatory_value_sat > 0 {
- let script = if opt_anchors {
+ let script = if channel_parameters.channel_type_features().supports_anchors_zero_fee_htlc_tx() {
get_to_countersignatory_with_anchors_redeemscript(&countersignatory_pubkeys.payment_point).to_v0_p2wsh()
} else {
Payload::p2wpkh(&BitcoinPublicKey::new(countersignatory_pubkeys.payment_point)).unwrap().script_pubkey()
));
}
- if opt_anchors {
+ if channel_parameters.channel_type_features().supports_anchors_zero_fee_htlc_tx() {
if to_broadcaster_value_sat > 0 || !htlcs_with_aux.is_empty() {
let anchor_script = get_anchor_redeemscript(broadcaster_funding_key);
txouts.push((
let mut htlcs = Vec::with_capacity(htlcs_with_aux.len());
for (htlc, _) in htlcs_with_aux {
- let script = chan_utils::get_htlc_redeemscript(&htlc, opt_anchors, &keys);
+ let script = chan_utils::get_htlc_redeemscript(&htlc, &channel_parameters.channel_type_features(), &keys);
let txout = TxOut {
script_pubkey: script.to_v0_p2wsh(),
value: htlc.amount_msat / 1000,
}
/// Should anchors be used.
- pub fn opt_anchors(&self) -> bool {
- self.opt_anchors.is_some()
+ pub fn channel_type_features(&self) -> &ChannelTypeFeatures {
+ &self.inner.channel_type_features
}
/// Get a signature for each HTLC which was included in the commitment transaction (ie for
for this_htlc in inner.htlcs.iter() {
assert!(this_htlc.transaction_output_index.is_some());
- let htlc_tx = build_htlc_transaction(&txid, inner.feerate_per_kw, channel_parameters.contest_delay(), &this_htlc, self.opt_anchors(), self.opt_non_zero_fee_anchors.is_some(), &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
+ let htlc_tx = build_htlc_transaction(&txid, inner.feerate_per_kw, channel_parameters.contest_delay(), &this_htlc, &self.channel_type_features, &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
- let htlc_redeemscript = get_htlc_redeemscript_with_explicit_keys(&this_htlc, self.opt_anchors(), &keys.broadcaster_htlc_key, &keys.countersignatory_htlc_key, &keys.revocation_key);
+ let htlc_redeemscript = get_htlc_redeemscript_with_explicit_keys(&this_htlc, &self.channel_type_features, &keys.broadcaster_htlc_key, &keys.countersignatory_htlc_key, &keys.revocation_key);
let sighash = hash_to_message!(&sighash::SighashCache::new(&htlc_tx).segwit_signature_hash(0, &htlc_redeemscript, this_htlc.amount_msat / 1000, EcdsaSighashType::All).unwrap()[..]);
ret.push(sign_with_aux_rand(secp_ctx, &sighash, &holder_htlc_key, entropy_source));
// Further, we should never be provided the preimage for an HTLC-Timeout transaction.
if this_htlc.offered && preimage.is_some() { unreachable!(); }
- let mut htlc_tx = build_htlc_transaction(&txid, inner.feerate_per_kw, channel_parameters.contest_delay(), &this_htlc, self.opt_anchors(), self.opt_non_zero_fee_anchors.is_some(), &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
+ let mut htlc_tx = build_htlc_transaction(&txid, inner.feerate_per_kw, channel_parameters.contest_delay(), &this_htlc, &self.channel_type_features, &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
- let htlc_redeemscript = get_htlc_redeemscript_with_explicit_keys(&this_htlc, self.opt_anchors(), &keys.broadcaster_htlc_key, &keys.countersignatory_htlc_key, &keys.revocation_key);
+ let htlc_redeemscript = get_htlc_redeemscript_with_explicit_keys(&this_htlc, &self.channel_type_features, &keys.broadcaster_htlc_key, &keys.countersignatory_htlc_key, &keys.revocation_key);
htlc_tx.input[0].witness = chan_utils::build_htlc_input_witness(
- signature, counterparty_signature, preimage, &htlc_redeemscript, self.opt_anchors(),
+ signature, counterparty_signature, preimage, &htlc_redeemscript, &self.channel_type_features,
);
htlc_tx
}
use bitcoin::hashes::hex::ToHex;
use bitcoin::util::address::Payload;
use bitcoin::PublicKey as BitcoinPublicKey;
+ use crate::ln::features::ChannelTypeFeatures;
#[test]
fn test_anchors() {
is_outbound_from_holder: false,
counterparty_parameters: Some(CounterpartyChannelTransactionParameters { pubkeys: counterparty_pubkeys.clone(), selected_contest_delay: 0 }),
funding_outpoint: Some(chain::transaction::OutPoint { txid: Txid::all_zeros(), index: 0 }),
- opt_anchors: None,
- opt_non_zero_fee_anchors: None,
+ channel_type_features: ChannelTypeFeatures::only_static_remote_key(),
};
let mut htlcs_with_aux: Vec<(_, ())> = Vec::new();
// Generate broadcaster and counterparty outputs
let tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
0, 1000, 2000,
- false,
holder_pubkeys.funding_pubkey,
counterparty_pubkeys.funding_pubkey,
keys.clone(), 1,
assert_eq!(tx.built.transaction.output[1].script_pubkey, Payload::p2wpkh(&BitcoinPublicKey::new(counterparty_pubkeys.payment_point)).unwrap().script_pubkey());
// Generate broadcaster and counterparty outputs as well as two anchors
+ channel_parameters.channel_type_features = ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies();
let tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
0, 1000, 2000,
- true,
holder_pubkeys.funding_pubkey,
counterparty_pubkeys.funding_pubkey,
keys.clone(), 1,
// Generate broadcaster output and anchor
let tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
0, 3000, 0,
- true,
holder_pubkeys.funding_pubkey,
counterparty_pubkeys.funding_pubkey,
keys.clone(), 1,
// Generate counterparty output and anchor
let tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
0, 0, 3000,
- true,
holder_pubkeys.funding_pubkey,
counterparty_pubkeys.funding_pubkey,
keys.clone(), 1,
};
// Generate broadcaster output and received and offered HTLC outputs, w/o anchors
+ channel_parameters.channel_type_features = ChannelTypeFeatures::only_static_remote_key();
let tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
0, 3000, 0,
- false,
holder_pubkeys.funding_pubkey,
counterparty_pubkeys.funding_pubkey,
keys.clone(), 1,
&channel_parameters.as_holder_broadcastable()
);
assert_eq!(tx.built.transaction.output.len(), 3);
- assert_eq!(tx.built.transaction.output[0].script_pubkey, get_htlc_redeemscript(&received_htlc, false, &keys).to_v0_p2wsh());
- assert_eq!(tx.built.transaction.output[1].script_pubkey, get_htlc_redeemscript(&offered_htlc, false, &keys).to_v0_p2wsh());
- assert_eq!(get_htlc_redeemscript(&received_htlc, false, &keys).to_v0_p2wsh().to_hex(),
+ assert_eq!(tx.built.transaction.output[0].script_pubkey, get_htlc_redeemscript(&received_htlc, &ChannelTypeFeatures::only_static_remote_key(), &keys).to_v0_p2wsh());
+ assert_eq!(tx.built.transaction.output[1].script_pubkey, get_htlc_redeemscript(&offered_htlc, &ChannelTypeFeatures::only_static_remote_key(), &keys).to_v0_p2wsh());
+ assert_eq!(get_htlc_redeemscript(&received_htlc, &ChannelTypeFeatures::only_static_remote_key(), &keys).to_v0_p2wsh().to_hex(),
"0020e43a7c068553003fe68fcae424fb7b28ec5ce48cd8b6744b3945631389bad2fb");
- assert_eq!(get_htlc_redeemscript(&offered_htlc, false, &keys).to_v0_p2wsh().to_hex(),
+ assert_eq!(get_htlc_redeemscript(&offered_htlc, &ChannelTypeFeatures::only_static_remote_key(), &keys).to_v0_p2wsh().to_hex(),
"0020215d61bba56b19e9eadb6107f5a85d7f99c40f65992443f69229c290165bc00d");
// Generate broadcaster output and received and offered HTLC outputs, with anchors
- channel_parameters.opt_anchors = Some(());
+ channel_parameters.channel_type_features = ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies();
let tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
0, 3000, 0,
- true,
holder_pubkeys.funding_pubkey,
counterparty_pubkeys.funding_pubkey,
keys.clone(), 1,
&channel_parameters.as_holder_broadcastable()
);
assert_eq!(tx.built.transaction.output.len(), 5);
- assert_eq!(tx.built.transaction.output[2].script_pubkey, get_htlc_redeemscript(&received_htlc, true, &keys).to_v0_p2wsh());
- assert_eq!(tx.built.transaction.output[3].script_pubkey, get_htlc_redeemscript(&offered_htlc, true, &keys).to_v0_p2wsh());
- assert_eq!(get_htlc_redeemscript(&received_htlc, true, &keys).to_v0_p2wsh().to_hex(),
+ assert_eq!(tx.built.transaction.output[2].script_pubkey, get_htlc_redeemscript(&received_htlc, &ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies(), &keys).to_v0_p2wsh());
+ assert_eq!(tx.built.transaction.output[3].script_pubkey, get_htlc_redeemscript(&offered_htlc, &ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies(), &keys).to_v0_p2wsh());
+ assert_eq!(get_htlc_redeemscript(&received_htlc, &ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies(), &keys).to_v0_p2wsh().to_hex(),
"0020b70d0649c72b38756885c7a30908d912a7898dd5d79457a7280b8e9a20f3f2bc");
- assert_eq!(get_htlc_redeemscript(&offered_htlc, true, &keys).to_v0_p2wsh().to_hex(),
+ assert_eq!(get_htlc_redeemscript(&offered_htlc, &ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies(), &keys).to_v0_p2wsh().to_hex(),
"002087a3faeb1950a469c0e2db4a79b093a41b9526e5a6fc6ef5cb949bde3be379c7");
}
pub const DEFAULT_MAX_HTLCS: u16 = 50;
-pub(crate) fn commitment_tx_base_weight(opt_anchors: bool) -> u64 {
+pub(crate) fn commitment_tx_base_weight(channel_type_features: &ChannelTypeFeatures) -> u64 {
const COMMITMENT_TX_BASE_WEIGHT: u64 = 724;
const COMMITMENT_TX_BASE_ANCHOR_WEIGHT: u64 = 1124;
- if opt_anchors { COMMITMENT_TX_BASE_ANCHOR_WEIGHT } else { COMMITMENT_TX_BASE_WEIGHT }
+ if channel_type_features.supports_anchors_zero_fee_htlc_tx() { COMMITMENT_TX_BASE_ANCHOR_WEIGHT } else { COMMITMENT_TX_BASE_WEIGHT }
}
#[cfg(not(test))]
}
impl<Signer: ChannelSigner> ChannelContext<Signer> {
- pub(crate) fn opt_anchors(&self) -> bool {
- self.channel_transaction_parameters.opt_anchors.is_some()
- }
-
/// Allowed in any state (including after shutdown)
pub fn get_update_time_counter(&self) -> u32 {
self.update_time_counter
($htlc: expr, $outbound: expr, $source: expr, $state_name: expr) => {
if $outbound == local { // "offered HTLC output"
let htlc_in_tx = get_htlc_in_commitment!($htlc, true);
- let htlc_tx_fee = if self.opt_anchors() {
+ let htlc_tx_fee = if self.get_channel_type().supports_anchors_zero_fee_htlc_tx() {
0
} else {
- feerate_per_kw as u64 * htlc_timeout_tx_weight(false) / 1000
+ feerate_per_kw as u64 * htlc_timeout_tx_weight(self.get_channel_type()) / 1000
};
if $htlc.amount_msat / 1000 >= broadcaster_dust_limit_satoshis + htlc_tx_fee {
log_trace!(logger, " ...including {} {} HTLC {} (hash {}) with value {}", if $outbound { "outbound" } else { "inbound" }, $state_name, $htlc.htlc_id, log_bytes!($htlc.payment_hash.0), $htlc.amount_msat);
}
} else {
let htlc_in_tx = get_htlc_in_commitment!($htlc, false);
- let htlc_tx_fee = if self.opt_anchors() {
+ let htlc_tx_fee = if self.get_channel_type().supports_anchors_zero_fee_htlc_tx() {
0
} else {
- feerate_per_kw as u64 * htlc_success_tx_weight(false) / 1000
+ feerate_per_kw as u64 * htlc_success_tx_weight(self.get_channel_type()) / 1000
};
if $htlc.amount_msat / 1000 >= broadcaster_dust_limit_satoshis + htlc_tx_fee {
log_trace!(logger, " ...including {} {} HTLC {} (hash {}) with value {}", if $outbound { "outbound" } else { "inbound" }, $state_name, $htlc.htlc_id, log_bytes!($htlc.payment_hash.0), $htlc.amount_msat);
broadcaster_max_commitment_tx_output.1 = cmp::max(broadcaster_max_commitment_tx_output.1, value_to_remote_msat as u64);
}
- let total_fee_sat = commit_tx_fee_sat(feerate_per_kw, included_non_dust_htlcs.len(), self.channel_transaction_parameters.opt_anchors.is_some());
- let anchors_val = if self.channel_transaction_parameters.opt_anchors.is_some() { ANCHOR_OUTPUT_VALUE_SATOSHI * 2 } else { 0 } as i64;
+ let total_fee_sat = commit_tx_fee_sat(feerate_per_kw, included_non_dust_htlcs.len(), &self.channel_transaction_parameters.channel_type_features);
+ let anchors_val = if self.channel_transaction_parameters.channel_type_features.supports_anchors_zero_fee_htlc_tx() { ANCHOR_OUTPUT_VALUE_SATOSHI * 2 } else { 0 } as i64;
let (value_to_self, value_to_remote) = if self.is_outbound() {
(value_to_self_msat / 1000 - anchors_val - total_fee_sat as i64, value_to_remote_msat / 1000)
} else {
let tx = CommitmentTransaction::new_with_auxiliary_htlc_data(commitment_number,
value_to_a as u64,
value_to_b as u64,
- self.channel_transaction_parameters.opt_anchors.is_some(),
funding_pubkey_a,
funding_pubkey_b,
keys.clone(),
on_holder_tx_holding_cell_htlcs_count: 0,
};
- let (htlc_timeout_dust_limit, htlc_success_dust_limit) = if context.opt_anchors() {
+ let (htlc_timeout_dust_limit, htlc_success_dust_limit) = if context.get_channel_type().supports_anchors_zero_fee_htlc_tx() {
(0, 0)
} else {
let dust_buffer_feerate = context.get_dust_buffer_feerate(outbound_feerate_update) as u64;
- (dust_buffer_feerate * htlc_timeout_tx_weight(false) / 1000,
- dust_buffer_feerate * htlc_success_tx_weight(false) / 1000)
+ (dust_buffer_feerate * htlc_timeout_tx_weight(context.get_channel_type()) / 1000,
+ dust_buffer_feerate * htlc_success_tx_weight(context.get_channel_type()) / 1000)
};
let counterparty_dust_limit_timeout_sat = htlc_timeout_dust_limit + context.counterparty_dust_limit_satoshis;
let holder_dust_limit_success_sat = htlc_success_dust_limit + context.holder_dust_limit_satoshis;
on_holder_tx_holding_cell_htlcs_count: 0,
};
- let (htlc_timeout_dust_limit, htlc_success_dust_limit) = if context.opt_anchors() {
+ let (htlc_timeout_dust_limit, htlc_success_dust_limit) = if context.get_channel_type().supports_anchors_zero_fee_htlc_tx() {
(0, 0)
} else {
let dust_buffer_feerate = context.get_dust_buffer_feerate(outbound_feerate_update) as u64;
- (dust_buffer_feerate * htlc_timeout_tx_weight(false) / 1000,
- dust_buffer_feerate * htlc_success_tx_weight(false) / 1000)
+ (dust_buffer_feerate * htlc_timeout_tx_weight(context.get_channel_type()) / 1000,
+ dust_buffer_feerate * htlc_success_tx_weight(context.get_channel_type()) / 1000)
};
let counterparty_dust_limit_success_sat = htlc_success_dust_limit + context.counterparty_dust_limit_satoshis;
let holder_dust_limit_timeout_sat = htlc_timeout_dust_limit + context.holder_dust_limit_satoshis;
// dependency.
// This complicates the computation around dust-values, up to the one-htlc-value.
let mut real_dust_limit_timeout_sat = context.holder_dust_limit_satoshis;
- if !context.opt_anchors() {
- real_dust_limit_timeout_sat += context.feerate_per_kw as u64 * htlc_timeout_tx_weight(false) / 1000;
+ if !context.get_channel_type().supports_anchors_zero_fee_htlc_tx() {
+ real_dust_limit_timeout_sat += context.feerate_per_kw as u64 * htlc_timeout_tx_weight(context.get_channel_type()) / 1000;
}
let htlc_above_dust = HTLCCandidate::new(real_dust_limit_timeout_sat * 1000, HTLCInitiator::LocalOffered);
// If the channel is inbound (i.e. counterparty pays the fee), we need to make sure
// sending a new HTLC won't reduce their balance below our reserve threshold.
let mut real_dust_limit_success_sat = context.counterparty_dust_limit_satoshis;
- if !context.opt_anchors() {
- real_dust_limit_success_sat += context.feerate_per_kw as u64 * htlc_success_tx_weight(false) / 1000;
+ if !context.get_channel_type().supports_anchors_zero_fee_htlc_tx() {
+ real_dust_limit_success_sat += context.feerate_per_kw as u64 * htlc_success_tx_weight(context.get_channel_type()) / 1000;
}
let htlc_above_dust = HTLCCandidate::new(real_dust_limit_success_sat * 1000, HTLCInitiator::LocalOffered);
let mut remaining_msat_below_dust_exposure_limit = None;
let mut dust_exposure_dust_limit_msat = 0;
- let (htlc_success_dust_limit, htlc_timeout_dust_limit) = if context.opt_anchors() {
+ let (htlc_success_dust_limit, htlc_timeout_dust_limit) = if context.get_channel_type().supports_anchors_zero_fee_htlc_tx() {
(context.counterparty_dust_limit_satoshis, context.holder_dust_limit_satoshis)
} else {
let dust_buffer_feerate = context.get_dust_buffer_feerate(None) as u64;
- (context.counterparty_dust_limit_satoshis + dust_buffer_feerate * htlc_success_tx_weight(false) / 1000,
- context.holder_dust_limit_satoshis + dust_buffer_feerate * htlc_timeout_tx_weight(false) / 1000)
+ (context.counterparty_dust_limit_satoshis + dust_buffer_feerate * htlc_success_tx_weight(context.get_channel_type()) / 1000,
+ context.holder_dust_limit_satoshis + dust_buffer_feerate * htlc_timeout_tx_weight(context.get_channel_type()) / 1000)
};
let on_counterparty_dust_htlc_exposure_msat = inbound_stats.on_counterparty_tx_dust_exposure_msat + outbound_stats.on_counterparty_tx_dust_exposure_msat;
if on_counterparty_dust_htlc_exposure_msat as i64 + htlc_success_dust_limit as i64 * 1000 - 1 > context.get_max_dust_htlc_exposure_msat() as i64 {
let context = &self;
assert!(context.is_outbound());
- let (htlc_success_dust_limit, htlc_timeout_dust_limit) = if context.opt_anchors() {
+ let (htlc_success_dust_limit, htlc_timeout_dust_limit) = if context.get_channel_type().supports_anchors_zero_fee_htlc_tx() {
(0, 0)
} else {
- (context.feerate_per_kw as u64 * htlc_success_tx_weight(false) / 1000,
- context.feerate_per_kw as u64 * htlc_timeout_tx_weight(false) / 1000)
+ (context.feerate_per_kw as u64 * htlc_success_tx_weight(context.get_channel_type()) / 1000,
+ context.feerate_per_kw as u64 * htlc_timeout_tx_weight(context.get_channel_type()) / 1000)
};
let real_dust_limit_success_sat = htlc_success_dust_limit + context.holder_dust_limit_satoshis;
let real_dust_limit_timeout_sat = htlc_timeout_dust_limit + context.holder_dust_limit_satoshis;
}
let num_htlcs = included_htlcs + addl_htlcs;
- let res = commit_tx_fee_msat(context.feerate_per_kw, num_htlcs, context.opt_anchors());
+ let res = commit_tx_fee_msat(context.feerate_per_kw, num_htlcs, &context.channel_type);
#[cfg(any(test, fuzzing))]
{
let mut fee = res;
if fee_spike_buffer_htlc.is_some() {
- fee = commit_tx_fee_msat(context.feerate_per_kw, num_htlcs - 1, context.opt_anchors());
+ fee = commit_tx_fee_msat(context.feerate_per_kw, num_htlcs - 1, &context.channel_type);
}
let total_pending_htlcs = context.pending_inbound_htlcs.len() + context.pending_outbound_htlcs.len()
+ context.holding_cell_htlc_updates.len();
let context = &self;
assert!(!context.is_outbound());
- let (htlc_success_dust_limit, htlc_timeout_dust_limit) = if context.opt_anchors() {
+ let (htlc_success_dust_limit, htlc_timeout_dust_limit) = if context.get_channel_type().supports_anchors_zero_fee_htlc_tx() {
(0, 0)
} else {
- (context.feerate_per_kw as u64 * htlc_success_tx_weight(false) / 1000,
- context.feerate_per_kw as u64 * htlc_timeout_tx_weight(false) / 1000)
+ (context.feerate_per_kw as u64 * htlc_success_tx_weight(context.get_channel_type()) / 1000,
+ context.feerate_per_kw as u64 * htlc_timeout_tx_weight(context.get_channel_type()) / 1000)
};
let real_dust_limit_success_sat = htlc_success_dust_limit + context.counterparty_dust_limit_satoshis;
let real_dust_limit_timeout_sat = htlc_timeout_dust_limit + context.counterparty_dust_limit_satoshis;
}
let num_htlcs = included_htlcs + addl_htlcs;
- let res = commit_tx_fee_msat(context.feerate_per_kw, num_htlcs, context.opt_anchors());
+ let res = commit_tx_fee_msat(context.feerate_per_kw, num_htlcs, &context.channel_type);
#[cfg(any(test, fuzzing))]
{
let mut fee = res;
if fee_spike_buffer_htlc.is_some() {
- fee = commit_tx_fee_msat(context.feerate_per_kw, num_htlcs - 1, context.opt_anchors());
+ fee = commit_tx_fee_msat(context.feerate_per_kw, num_htlcs - 1, &context.channel_type);
}
let total_pending_htlcs = context.pending_inbound_htlcs.len() + context.pending_outbound_htlcs.len();
let commitment_tx_info = CommitmentTxInfoCached {
// Get the fee cost in SATS of a commitment tx with a given number of HTLC outputs.
// Note that num_htlcs should not include dust HTLCs.
#[inline]
-fn commit_tx_fee_sat(feerate_per_kw: u32, num_htlcs: usize, opt_anchors: bool) -> u64 {
- feerate_per_kw as u64 * (commitment_tx_base_weight(opt_anchors) + num_htlcs as u64 * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000
+fn commit_tx_fee_sat(feerate_per_kw: u32, num_htlcs: usize, channel_type_features: &ChannelTypeFeatures) -> u64 {
+ feerate_per_kw as u64 * (commitment_tx_base_weight(channel_type_features) + num_htlcs as u64 * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000
}
// Get the fee cost in MSATS of a commitment tx with a given number of HTLC outputs.
// Note that num_htlcs should not include dust HTLCs.
-fn commit_tx_fee_msat(feerate_per_kw: u32, num_htlcs: usize, opt_anchors: bool) -> u64 {
+fn commit_tx_fee_msat(feerate_per_kw: u32, num_htlcs: usize, channel_type_features: &ChannelTypeFeatures) -> u64 {
// Note that we need to divide before multiplying to round properly,
// since the lowest denomination of bitcoin on-chain is the satoshi.
- (commitment_tx_base_weight(opt_anchors) + num_htlcs as u64 * COMMITMENT_TX_WEIGHT_PER_HTLC) * feerate_per_kw as u64 / 1000 * 1000
+ (commitment_tx_base_weight(channel_type_features) + num_htlcs as u64 * COMMITMENT_TX_WEIGHT_PER_HTLC) * feerate_per_kw as u64 / 1000 * 1000
}
// TODO: We should refactor this to be an Inbound/OutboundChannel until initial setup handshaking
}
}
- let (htlc_timeout_dust_limit, htlc_success_dust_limit) = if self.context.opt_anchors() {
+ let (htlc_timeout_dust_limit, htlc_success_dust_limit) = if self.context.get_channel_type().supports_anchors_zero_fee_htlc_tx() {
(0, 0)
} else {
let dust_buffer_feerate = self.context.get_dust_buffer_feerate(None) as u64;
- (dust_buffer_feerate * htlc_timeout_tx_weight(false) / 1000,
- dust_buffer_feerate * htlc_success_tx_weight(false) / 1000)
+ (dust_buffer_feerate * htlc_timeout_tx_weight(self.context.get_channel_type()) / 1000,
+ dust_buffer_feerate * htlc_success_tx_weight(self.context.get_channel_type()) / 1000)
};
let exposure_dust_limit_timeout_sats = htlc_timeout_dust_limit + self.context.counterparty_dust_limit_satoshis;
if msg.amount_msat / 1000 < exposure_dust_limit_timeout_sats {
for (idx, (htlc, mut source_opt)) in htlcs_cloned.drain(..).enumerate() {
if let Some(_) = htlc.transaction_output_index {
let htlc_tx = chan_utils::build_htlc_transaction(&commitment_txid, commitment_stats.feerate_per_kw,
- self.context.get_counterparty_selected_contest_delay().unwrap(), &htlc, self.context.opt_anchors(),
- false, &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
+ self.context.get_counterparty_selected_contest_delay().unwrap(), &htlc, &self.context.channel_type,
+ &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
- let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, self.context.opt_anchors(), &keys);
- let htlc_sighashtype = if self.context.opt_anchors() { EcdsaSighashType::SinglePlusAnyoneCanPay } else { EcdsaSighashType::All };
+ let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, &self.context.channel_type, &keys);
+ let htlc_sighashtype = if self.context.channel_type.supports_anchors_zero_fee_htlc_tx() { EcdsaSighashType::SinglePlusAnyoneCanPay } else { EcdsaSighashType::All };
let htlc_sighash = hash_to_message!(&sighash::SighashCache::new(&htlc_tx).segwit_signature_hash(0, &htlc_redeemscript, htlc.amount_msat / 1000, htlc_sighashtype).unwrap()[..]);
log_trace!(logger, "Checking HTLC tx signature {} by key {} against tx {} (sighash {}) with redeemscript {} in channel {}.",
log_bytes!(msg.htlc_signatures[idx].serialize_compact()[..]), log_bytes!(keys.countersignatory_htlc_key.serialize()),
let outbound_stats = self.context.get_outbound_pending_htlc_stats(Some(feerate_per_kw));
let keys = self.context.build_holder_transaction_keys(self.context.cur_holder_commitment_transaction_number);
let commitment_stats = self.context.build_commitment_transaction(self.context.cur_holder_commitment_transaction_number, &keys, true, true, logger);
- let buffer_fee_msat = commit_tx_fee_sat(feerate_per_kw, commitment_stats.num_nondust_htlcs + outbound_stats.on_holder_tx_holding_cell_htlcs_count as usize + CONCURRENT_INBOUND_HTLC_FEE_BUFFER as usize, self.context.opt_anchors()) * 1000;
+ let buffer_fee_msat = commit_tx_fee_sat(feerate_per_kw, commitment_stats.num_nondust_htlcs + outbound_stats.on_holder_tx_holding_cell_htlcs_count as usize + CONCURRENT_INBOUND_HTLC_FEE_BUFFER as usize, self.context.get_channel_type()) * 1000;
let holder_balance_msat = commitment_stats.local_balance_msat - outbound_stats.holding_cell_msat;
if holder_balance_msat < buffer_fee_msat + self.context.counterparty_selected_channel_reserve_satoshis.unwrap() * 1000 {
//TODO: auto-close after a number of failures?
&& info.next_holder_htlc_id == self.context.next_holder_htlc_id
&& info.next_counterparty_htlc_id == self.context.next_counterparty_htlc_id
&& info.feerate == self.context.feerate_per_kw {
- let actual_fee = commit_tx_fee_msat(self.context.feerate_per_kw, commitment_stats.num_nondust_htlcs, self.context.opt_anchors());
+ let actual_fee = commit_tx_fee_msat(self.context.feerate_per_kw, commitment_stats.num_nondust_htlcs, self.context.get_channel_type());
assert_eq!(actual_fee, info.fee);
}
}
for (ref htlc_sig, ref htlc) in htlc_signatures.iter().zip(htlcs) {
log_trace!(logger, "Signed remote HTLC tx {} with redeemscript {} with pubkey {} -> {} in channel {}",
- encode::serialize_hex(&chan_utils::build_htlc_transaction(&counterparty_commitment_txid, commitment_stats.feerate_per_kw, self.context.get_holder_selected_contest_delay(), htlc, self.context.opt_anchors(), false, &counterparty_keys.broadcaster_delayed_payment_key, &counterparty_keys.revocation_key)),
- encode::serialize_hex(&chan_utils::get_htlc_redeemscript(&htlc, self.context.opt_anchors(), &counterparty_keys)),
+ encode::serialize_hex(&chan_utils::build_htlc_transaction(&counterparty_commitment_txid, commitment_stats.feerate_per_kw, self.context.get_holder_selected_contest_delay(), htlc, &self.context.channel_type, &counterparty_keys.broadcaster_delayed_payment_key, &counterparty_keys.revocation_key)),
+ encode::serialize_hex(&chan_utils::get_htlc_redeemscript(&htlc, &self.context.channel_type, &counterparty_keys)),
log_bytes!(counterparty_keys.broadcaster_htlc_key.serialize()),
log_bytes!(htlc_sig.serialize_compact()[..]), log_bytes!(self.context.channel_id()));
}
let feerate = fee_estimator.bounded_sat_per_1000_weight(ConfirmationTarget::Normal);
let value_to_self_msat = channel_value_satoshis * 1000 - push_msat;
- let commitment_tx_fee = commit_tx_fee_msat(feerate, MIN_AFFORDABLE_HTLC_COUNT, channel_type.requires_anchors_zero_fee_htlc_tx());
+ let commitment_tx_fee = commit_tx_fee_msat(feerate, MIN_AFFORDABLE_HTLC_COUNT, &channel_type);
if value_to_self_msat < commitment_tx_fee {
return Err(APIError::APIMisuseError{ err: format!("Funding amount ({}) can't even pay fee for initial commitment transaction fee of {}.", value_to_self_msat / 1000, commitment_tx_fee / 1000) });
}
is_outbound_from_holder: true,
counterparty_parameters: None,
funding_outpoint: None,
- opt_anchors: if channel_type.requires_anchors_zero_fee_htlc_tx() { Some(()) } else { None },
- opt_non_zero_fee_anchors: None
+ channel_type_features: channel_type.clone()
},
funding_transaction: None,
// whatever reason.
if self.context.channel_type.supports_anchors_zero_fee_htlc_tx() {
self.context.channel_type.clear_anchors_zero_fee_htlc_tx();
- assert!(self.context.channel_transaction_parameters.opt_non_zero_fee_anchors.is_none());
- self.context.channel_transaction_parameters.opt_anchors = None;
+ assert!(!self.context.channel_transaction_parameters.channel_type_features.supports_anchors_nonzero_fee_htlc_tx());
} else if self.context.channel_type.supports_scid_privacy() {
self.context.channel_type.clear_scid_privacy();
} else {
}
channel_type
};
- let opt_anchors = channel_type.supports_anchors_zero_fee_htlc_tx();
let channel_keys_id = signer_provider.generate_channel_keys_id(true, msg.funding_satoshis, user_id);
let holder_signer = signer_provider.derive_channel_signer(msg.funding_satoshis, channel_keys_id);
// check if the funder's amount for the initial commitment tx is sufficient
// for full fee payment plus a few HTLCs to ensure the channel will be useful.
let funders_amount_msat = msg.funding_satoshis * 1000 - msg.push_msat;
- let commitment_tx_fee = commit_tx_fee_msat(msg.feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT, opt_anchors) / 1000;
+ let commitment_tx_fee = commit_tx_fee_msat(msg.feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT, &channel_type) / 1000;
if funders_amount_msat / 1000 < commitment_tx_fee {
return Err(ChannelError::Close(format!("Funding amount ({} sats) can't even pay fee for initial commitment transaction fee of {} sats.", funders_amount_msat / 1000, commitment_tx_fee)));
}
pubkeys: counterparty_pubkeys,
}),
funding_outpoint: None,
- opt_anchors: if opt_anchors { Some(()) } else { None },
- opt_non_zero_fee_anchors: None
+ channel_type_features: channel_type.clone()
},
funding_transaction: None,
// the dust limit check.
let htlc_candidate = HTLCCandidate::new(htlc_amount_msat, HTLCInitiator::LocalOffered);
let local_commit_tx_fee = node_a_chan.context.next_local_commit_tx_fee_msat(htlc_candidate, None);
- let local_commit_fee_0_htlcs = commit_tx_fee_msat(node_a_chan.context.feerate_per_kw, 0, node_a_chan.context.opt_anchors());
+ let local_commit_fee_0_htlcs = commit_tx_fee_msat(node_a_chan.context.feerate_per_kw, 0, node_a_chan.context.get_channel_type());
assert_eq!(local_commit_tx_fee, local_commit_fee_0_htlcs);
// Finally, make sure that when Node A calculates the remote's commitment transaction fees, all
// of the HTLCs are seen to be above the dust limit.
node_a_chan.context.channel_transaction_parameters.is_outbound_from_holder = false;
- let remote_commit_fee_3_htlcs = commit_tx_fee_msat(node_a_chan.context.feerate_per_kw, 3, node_a_chan.context.opt_anchors());
+ let remote_commit_fee_3_htlcs = commit_tx_fee_msat(node_a_chan.context.feerate_per_kw, 3, node_a_chan.context.get_channel_type());
let htlc_candidate = HTLCCandidate::new(htlc_amount_msat, HTLCInitiator::LocalOffered);
let remote_commit_tx_fee = node_a_chan.context.next_remote_commit_tx_fee_msat(htlc_candidate, None);
assert_eq!(remote_commit_tx_fee, remote_commit_fee_3_htlcs);
let config = UserConfig::default();
let mut chan = OutboundV1Channel::<EnforcingSigner>::new(&fee_est, &&keys_provider, &&keys_provider, node_id, &channelmanager::provided_init_features(&config), 10000000, 100000, 42, &config, 0, 42).unwrap();
- let commitment_tx_fee_0_htlcs = commit_tx_fee_msat(chan.context.feerate_per_kw, 0, chan.context.opt_anchors());
- let commitment_tx_fee_1_htlc = commit_tx_fee_msat(chan.context.feerate_per_kw, 1, chan.context.opt_anchors());
+ let commitment_tx_fee_0_htlcs = commit_tx_fee_msat(chan.context.feerate_per_kw, 0, chan.context.get_channel_type());
+ let commitment_tx_fee_1_htlc = commit_tx_fee_msat(chan.context.feerate_per_kw, 1, chan.context.get_channel_type());
// If HTLC_SUCCESS_TX_WEIGHT and HTLC_TIMEOUT_TX_WEIGHT were swapped: then this HTLC would be
// counted as dust when it shouldn't be.
- let htlc_amt_above_timeout = ((253 * htlc_timeout_tx_weight(chan.context.opt_anchors()) / 1000) + chan.context.holder_dust_limit_satoshis + 1) * 1000;
+ let htlc_amt_above_timeout = ((253 * htlc_timeout_tx_weight(chan.context.get_channel_type()) / 1000) + chan.context.holder_dust_limit_satoshis + 1) * 1000;
let htlc_candidate = HTLCCandidate::new(htlc_amt_above_timeout, HTLCInitiator::LocalOffered);
let commitment_tx_fee = chan.context.next_local_commit_tx_fee_msat(htlc_candidate, None);
assert_eq!(commitment_tx_fee, commitment_tx_fee_1_htlc);
// If swapped: this HTLC would be counted as non-dust when it shouldn't be.
- let dust_htlc_amt_below_success = ((253 * htlc_success_tx_weight(chan.context.opt_anchors()) / 1000) + chan.context.holder_dust_limit_satoshis - 1) * 1000;
+ let dust_htlc_amt_below_success = ((253 * htlc_success_tx_weight(chan.context.get_channel_type()) / 1000) + chan.context.holder_dust_limit_satoshis - 1) * 1000;
let htlc_candidate = HTLCCandidate::new(dust_htlc_amt_below_success, HTLCInitiator::RemoteOffered);
let commitment_tx_fee = chan.context.next_local_commit_tx_fee_msat(htlc_candidate, None);
assert_eq!(commitment_tx_fee, commitment_tx_fee_0_htlcs);
chan.context.channel_transaction_parameters.is_outbound_from_holder = false;
// If swapped: this HTLC would be counted as non-dust when it shouldn't be.
- let dust_htlc_amt_above_timeout = ((253 * htlc_timeout_tx_weight(chan.context.opt_anchors()) / 1000) + chan.context.counterparty_dust_limit_satoshis + 1) * 1000;
+ let dust_htlc_amt_above_timeout = ((253 * htlc_timeout_tx_weight(chan.context.get_channel_type()) / 1000) + chan.context.counterparty_dust_limit_satoshis + 1) * 1000;
let htlc_candidate = HTLCCandidate::new(dust_htlc_amt_above_timeout, HTLCInitiator::LocalOffered);
let commitment_tx_fee = chan.context.next_remote_commit_tx_fee_msat(htlc_candidate, None);
assert_eq!(commitment_tx_fee, commitment_tx_fee_0_htlcs);
// If swapped: this HTLC would be counted as dust when it shouldn't be.
- let htlc_amt_below_success = ((253 * htlc_success_tx_weight(chan.context.opt_anchors()) / 1000) + chan.context.counterparty_dust_limit_satoshis - 1) * 1000;
+ let htlc_amt_below_success = ((253 * htlc_success_tx_weight(chan.context.get_channel_type()) / 1000) + chan.context.counterparty_dust_limit_satoshis - 1) * 1000;
let htlc_candidate = HTLCCandidate::new(htlc_amt_below_success, HTLCInitiator::RemoteOffered);
let commitment_tx_fee = chan.context.next_remote_commit_tx_fee_msat(htlc_candidate, None);
assert_eq!(commitment_tx_fee, commitment_tx_fee_1_htlc);
macro_rules! test_commitment {
( $counterparty_sig_hex: expr, $sig_hex: expr, $tx_hex: expr, $($remain:tt)* ) => {
- chan.context.channel_transaction_parameters.opt_anchors = None;
- test_commitment_common!($counterparty_sig_hex, $sig_hex, $tx_hex, false, $($remain)*);
+ chan.context.channel_transaction_parameters.channel_type_features = ChannelTypeFeatures::only_static_remote_key();
+ test_commitment_common!($counterparty_sig_hex, $sig_hex, $tx_hex, &ChannelTypeFeatures::only_static_remote_key(), $($remain)*);
};
}
macro_rules! test_commitment_with_anchors {
( $counterparty_sig_hex: expr, $sig_hex: expr, $tx_hex: expr, $($remain:tt)* ) => {
- chan.context.channel_transaction_parameters.opt_anchors = Some(());
- test_commitment_common!($counterparty_sig_hex, $sig_hex, $tx_hex, true, $($remain)*);
+ chan.context.channel_transaction_parameters.channel_type_features = ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies();
+ test_commitment_common!($counterparty_sig_hex, $sig_hex, $tx_hex, &ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies(), $($remain)*);
};
}
let ref htlc = htlcs[$htlc_idx];
let htlc_tx = chan_utils::build_htlc_transaction(&unsigned_tx.txid, chan.context.feerate_per_kw,
chan.context.get_counterparty_selected_contest_delay().unwrap(),
- &htlc, $opt_anchors, false, &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
+ &htlc, $opt_anchors, &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, $opt_anchors, &keys);
- let htlc_sighashtype = if $opt_anchors { EcdsaSighashType::SinglePlusAnyoneCanPay } else { EcdsaSighashType::All };
+ let htlc_sighashtype = if $opt_anchors.supports_anchors_zero_fee_htlc_tx() { EcdsaSighashType::SinglePlusAnyoneCanPay } else { EcdsaSighashType::All };
let htlc_sighash = Message::from_slice(&sighash::SighashCache::new(&htlc_tx).segwit_signature_hash(0, &htlc_redeemscript, htlc.amount_msat / 1000, htlc_sighashtype).unwrap()[..]).unwrap();
assert!(secp_ctx.verify_ecdsa(&htlc_sighash, &remote_signature, &keys.countersignatory_htlc_key).is_ok(), "verify counterparty htlc sig");
}
let htlc_sig = htlc_sig_iter.next().unwrap();
- let num_anchors = if $opt_anchors { 2 } else { 0 };
+ let num_anchors = if $opt_anchors.supports_anchors_zero_fee_htlc_tx() { 2 } else { 0 };
assert_eq!((htlc_sig.0).0.transaction_output_index, Some($htlc_idx + num_anchors), "output index");
let signature = Signature::from_der(&hex::decode($htlc_sig_hex).unwrap()[..]).unwrap();
chan.context.value_to_self_msat = 6993000000; // 7000000000 - 7000000
chan.context.feerate_per_kw = 2185;
chan.context.holder_dust_limit_satoshis = 2001;
+ let cached_channel_type = chan.context.channel_type;
+ chan.context.channel_type = ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies();
test_commitment_with_anchors!("3044022040f63a16148cf35c8d3d41827f5ae7f7c3746885bb64d4d1b895892a83812b3e02202fcf95c2bf02c466163b3fa3ced6a24926fbb4035095a96842ef516e86ba54c0",
"3045022100cd8479cfe1edb1e5a1d487391e0451a469c7171e51e680183f19eb4321f20e9b02204eab7d5a6384b1b08e03baa6e4d9748dfd2b5ab2bae7e39604a0d0055bbffdd5",
chan.context.value_to_self_msat = 6993000000; // 7000000000 - 7000000
chan.context.feerate_per_kw = 3702;
chan.context.holder_dust_limit_satoshis = 546;
+ chan.context.channel_type = cached_channel_type.clone();
test_commitment!("304502210092a587aeb777f869e7ff0d7898ea619ee26a3dacd1f3672b945eea600be431100220077ee9eae3528d15251f2a52b607b189820e57a6ccfac8d1af502b132ee40169",
"3045022100e5efb73c32d32da2d79702299b6317de6fb24a60476e3855926d78484dd1b3c802203557cb66a42c944ef06e00bcc4da35a5bcb2f185aab0f8e403e519e1d66aaf75",
chan.context.value_to_self_msat = 6993000000; // 7000000000 - 7000000
chan.context.feerate_per_kw = 3687;
chan.context.holder_dust_limit_satoshis = 3001;
+ chan.context.channel_type = ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies();
test_commitment_with_anchors!("3045022100ad6c71569856b2d7ff42e838b4abe74a713426b37f22fa667a195a4c88908c6902202b37272b02a42dc6d9f4f82cab3eaf84ac882d9ed762859e1e75455c2c228377",
"3045022100c970799bcb33f43179eb43b3378a0a61991cf2923f69b36ef12548c3df0e6d500220413dc27d2e39ee583093adfcb7799be680141738babb31cc7b0669a777a31f5d",
chan.context.value_to_self_msat = 6993000000; // 7000000000 - 7000000
chan.context.feerate_per_kw = 4914;
chan.context.holder_dust_limit_satoshis = 546;
+ chan.context.channel_type = cached_channel_type.clone();
test_commitment!("3045022100b4b16d5f8cc9fc4c1aff48831e832a0d8990e133978a66e302c133550954a44d022073573ce127e2200d316f6b612803a5c0c97b8d20e1e44dbe2ac0dd2fb8c95244",
"3045022100d72638bc6308b88bb6d45861aae83e5b9ff6e10986546e13bce769c70036e2620220320be7c6d66d22f30b9fcd52af66531505b1310ca3b848c19285b38d8a1a8c19",
chan.context.value_to_self_msat = 6993000000; // 7000000000 - 7000000
chan.context.feerate_per_kw = 4894;
chan.context.holder_dust_limit_satoshis = 4001;
+ chan.context.channel_type = ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies();
test_commitment_with_anchors!("3045022100e784a66b1588575801e237d35e510fd92a81ae3a4a2a1b90c031ad803d07b3f3022021bc5f16501f167607d63b681442da193eb0a76b4b7fd25c2ed4f8b28fd35b95",
"30450221009f16ac85d232e4eddb3fcd750a68ebf0b58e3356eaada45d3513ede7e817bf4c02207c2b043b4e5f971261975406cb955219fa56bffe5d834a833694b5abc1ce4cfd",
chan.context.value_to_self_msat = 6993000000; // 7000000000 - 7000000
chan.context.feerate_per_kw = 9651180;
chan.context.holder_dust_limit_satoshis = 546;
+ chan.context.channel_type = cached_channel_type.clone();
test_commitment!("304402200a8544eba1d216f5c5e530597665fa9bec56943c0f66d98fc3d028df52d84f7002201e45fa5c6bc3a506cc2553e7d1c0043a9811313fc39c954692c0d47cfce2bbd3",
"3045022100e11b638c05c650c2f63a421d36ef8756c5ce82f2184278643520311cdf50aa200220259565fb9c8e4a87ccaf17f27a3b9ca4f20625754a0920d9c6c239d8156a11de",
chan.context.value_to_self_msat = 6993000000; // 7000000000 - 7000000
chan.context.feerate_per_kw = 6216010;
chan.context.holder_dust_limit_satoshis = 4001;
+ chan.context.channel_type = ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies();
test_commitment_with_anchors!("30450221008fd5dbff02e4b59020d4cd23a3c30d3e287065fda75a0a09b402980adf68ccda022001e0b8b620cd915ddff11f1de32addf23d81d51b90e6841b2cb8dcaf3faa5ecf",
"30450221009ad80792e3038fe6968d12ff23e6888a565c3ddd065037f357445f01675d63f3022018384915e5f1f4ae157e15debf4f49b61c8d9d2b073c7d6f97c4a68caa3ed4c1",
chan.context.value_to_self_msat = 6993000000; // 7000000000 - 7000000
chan.context.feerate_per_kw = 9651936;
chan.context.holder_dust_limit_satoshis = 546;
+ chan.context.channel_type = cached_channel_type;
test_commitment!("304402202ade0142008309eb376736575ad58d03e5b115499709c6db0b46e36ff394b492022037b63d78d66404d6504d4c4ac13be346f3d1802928a6d3ad95a6a944227161a2",
"304402207e8d51e0c570a5868a78414f4e0cbfaed1106b171b9581542c30718ee4eb95ba02203af84194c97adf98898c9afe2f2ed4a7f8dba05a2dfab28ac9d9c604aa49a379",
"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" }
} );
+ chan.context.channel_type = ChannelTypeFeatures::anchors_zero_htlc_fee_and_dependencies();
test_commitment_with_anchors!("3044022027b38dfb654c34032ffb70bb43022981652fce923cbbe3cbe7394e2ade8b34230220584195b78da6e25c2e8da6b4308d9db25b65b64975db9266163ef592abb7c725",
"3045022100b4014970d9d7962853f3f85196144671d7d5d87426250f0a5fdaf9a55292e92502205360910c9abb397467e19dbd63d081deb4a3240903114c98cec0a23591b79b76",
"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", {
}
#[cfg(test)]
-macro_rules! get_opt_anchors {
+macro_rules! get_channel_type_features {
($node: expr, $counterparty_node: expr, $channel_id: expr) => {
{
let mut per_peer_state_lock;
let mut peer_state_lock;
let chan = get_channel_ref!($node, $counterparty_node, per_peer_state_lock, peer_state_lock, $channel_id);
- chan.context.opt_anchors()
+ chan.context.get_channel_type().clone()
}
}
}
use crate::ln::chan_utils::{OFFERED_HTLC_SCRIPT_WEIGHT, htlc_success_tx_weight, htlc_timeout_tx_weight, HTLCOutputInCommitment};
use crate::routing::gossip::{NetworkGraph, NetworkUpdate};
use crate::routing::router::{Path, PaymentParameters, Route, RouteHop, RouteParameters, find_route, get_route};
-use crate::ln::features::{ChannelFeatures, NodeFeatures};
+use crate::ln::features::{ChannelFeatures, ChannelTypeFeatures, NodeFeatures};
use crate::ln::msgs;
use crate::ln::msgs::{ChannelMessageHandler, RoutingMessageHandler, ErrorAction};
use crate::util::enforcing_trait_impls::EnforcingSigner;
// Have node0 initiate a channel to node1 with aforementioned parameters
let mut push_amt = 100_000_000;
let feerate_per_kw = 253;
- let opt_anchors = false;
- push_amt -= feerate_per_kw as u64 * (commitment_tx_base_weight(opt_anchors) + 4 * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000 * 1000;
+ let channel_type_features = ChannelTypeFeatures::only_static_remote_key();
+ push_amt -= feerate_per_kw as u64 * (commitment_tx_base_weight(&channel_type_features) + 4 * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000 * 1000;
push_amt -= get_holder_selected_channel_reserve_satoshis(100_000, &default_config) * 1000;
let temp_channel_id = nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100_000, if send_from_initiator { 0 } else { push_amt }, 42, None).unwrap();
// Note that for outbound channels we have to consider the commitment tx fee and the
// "fee spike buffer", which is currently a multiple of the total commitment tx fee as
// well as an additional HTLC.
- - FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE * commit_tx_fee_msat(feerate_per_kw, 2, opt_anchors));
+ - FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE * commit_tx_fee_msat(feerate_per_kw, 2, &channel_type_features));
} else {
send_payment(&nodes[1], &[&nodes[0]], push_amt);
}
let default_config = UserConfig::default();
let bs_channel_reserve_sats = get_holder_selected_channel_reserve_satoshis(channel_value, &default_config);
- let opt_anchors = false;
+ let channel_type_features = ChannelTypeFeatures::only_static_remote_key();
// Calculate the maximum feerate that A can afford. Note that we don't send an update_fee
// CONCURRENT_INBOUND_HTLC_FEE_BUFFER HTLCs before actually running out of local balance, so we
// calculate two different feerates here - the expected local limit as well as the expected
// remote limit.
- let feerate = ((channel_value - bs_channel_reserve_sats - push_sats) * 1000 / (commitment_tx_base_weight(opt_anchors) + CONCURRENT_INBOUND_HTLC_FEE_BUFFER as u64 * COMMITMENT_TX_WEIGHT_PER_HTLC)) as u32;
- let non_buffer_feerate = ((channel_value - bs_channel_reserve_sats - push_sats) * 1000 / commitment_tx_base_weight(opt_anchors)) as u32;
+ let feerate = ((channel_value - bs_channel_reserve_sats - push_sats) * 1000 / (commitment_tx_base_weight(&channel_type_features) + CONCURRENT_INBOUND_HTLC_FEE_BUFFER as u64 * COMMITMENT_TX_WEIGHT_PER_HTLC)) as u32;
+ let non_buffer_feerate = ((channel_value - bs_channel_reserve_sats - push_sats) * 1000 / commitment_tx_base_weight(&channel_type_features)) as u32;
{
let mut feerate_lock = chanmon_cfgs[0].fee_estimator.sat_per_kw.lock().unwrap();
*feerate_lock = feerate;
//We made sure neither party's funds are below the dust limit and there are no HTLCs here
assert_eq!(commitment_tx.output.len(), 2);
- let total_fee: u64 = commit_tx_fee_msat(feerate, 0, opt_anchors) / 1000;
+ let total_fee: u64 = commit_tx_fee_msat(feerate, 0, &channel_type_features) / 1000;
let mut actual_fee = commitment_tx.output.iter().fold(0, |acc, output| acc + output.value);
actual_fee = channel_value - actual_fee;
assert_eq!(total_fee, actual_fee);
let commitment_tx = CommitmentTransaction::new_with_auxiliary_htlc_data(
INITIAL_COMMITMENT_NUMBER - 1,
push_sats,
- channel_value - push_sats - commit_tx_fee_msat(non_buffer_feerate + 4, 0, opt_anchors) / 1000,
- opt_anchors, local_funding, remote_funding,
+ channel_value - push_sats - commit_tx_fee_msat(non_buffer_feerate + 4, 0, &channel_type_features) / 1000,
+ local_funding, remote_funding,
commit_tx_keys.clone(),
non_buffer_feerate + 4,
&mut htlcs,
let channel_reserve = chan_stat.channel_reserve_msat;
// The 2* and +1 are for the fee spike reserve.
- let commit_tx_fee = 2 * commit_tx_fee_msat(get_feerate!(nodes[0], nodes[1], chan.2), 1 + 1, get_opt_anchors!(nodes[0], nodes[1], chan.2));
+ let commit_tx_fee = 2 * commit_tx_fee_msat(get_feerate!(nodes[0], nodes[1], chan.2), 1 + 1, &get_channel_type_features!(nodes[0], nodes[1], chan.2));
let max_can_send = 5000000 - channel_reserve - commit_tx_fee;
let (mut route, our_payment_hash, _, our_payment_secret) =
get_route_and_payment_hash!(nodes[0], nodes[1], max_can_send);
commitment_number,
95000,
local_chan_balance,
- local_chan.context.opt_anchors(), local_funding, remote_funding,
+ local_funding, remote_funding,
commit_tx_keys.clone(),
feerate_per_kw,
&mut vec![(accepted_htlc_info, ())],
let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
let default_config = UserConfig::default();
- let opt_anchors = false;
+ let channel_type_features = ChannelTypeFeatures::only_static_remote_key();
let mut push_amt = 100_000_000;
- push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64, opt_anchors);
+ push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64, &channel_type_features);
push_amt -= get_holder_selected_channel_reserve_satoshis(100_000, &default_config) * 1000;
let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
let default_config = UserConfig::default();
- let opt_anchors = false;
+ let channel_type_features = ChannelTypeFeatures::only_static_remote_key();
// Set nodes[0]'s balance such that they will consider any above-dust received HTLC to be a
// channel reserve violation (so their balance is channel reserve (1000 sats) + commitment
// transaction fee with 0 HTLCs (183 sats)).
let mut push_amt = 100_000_000;
- push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64, opt_anchors);
+ push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64, &channel_type_features);
push_amt -= get_holder_selected_channel_reserve_satoshis(100_000, &default_config) * 1000;
let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100_000, push_amt);
let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None, None]);
let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
let default_config = UserConfig::default();
- let opt_anchors = false;
+ let channel_type_features = ChannelTypeFeatures::only_static_remote_key();
// Set nodes[0]'s balance such that they will consider any above-dust received HTLC to be a
// channel reserve violation (so their balance is channel reserve (1000 sats) + commitment
// transaction fee with 0 HTLCs (183 sats)).
let mut push_amt = 100_000_000;
- push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64, opt_anchors);
+ push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64, &channel_type_features);
push_amt -= get_holder_selected_channel_reserve_satoshis(100_000, &default_config) * 1000;
create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, push_amt);
let dust_amt = crate::ln::channel::MIN_CHAN_DUST_LIMIT_SATOSHIS * 1000
- + feerate_per_kw as u64 * htlc_success_tx_weight(opt_anchors) / 1000 * 1000 - 1;
+ + feerate_per_kw as u64 * htlc_success_tx_weight(&channel_type_features) / 1000 * 1000 - 1;
// In the previous code, routing this dust payment would cause nodes[0] to perceive a channel
// reserve violation even though it's a dust HTLC and therefore shouldn't count towards the
// commitment transaction fee.
let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
let default_config = UserConfig::default();
- let opt_anchors = false;
+ let channel_type_features = ChannelTypeFeatures::only_static_remote_key();
// Set the push_msat amount such that nodes[0] will not be able to afford to add even a single
// HTLC.
let mut push_amt = 100_000_000;
- push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64, opt_anchors);
+ push_amt -= commit_tx_fee_msat(feerate_per_kw, MIN_AFFORDABLE_HTLC_COUNT as u64, &channel_type_features);
assert_eq!(nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100_000, push_amt + 1, 42, None).unwrap_err(),
APIError::APIMisuseError { err: "Funding amount (356) can't even pay fee for initial commitment transaction fee of 357.".to_string() });
let total_routing_fee_msat = (nodes.len() - 2) as u64 * feemsat;
let chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
let feerate = get_feerate!(nodes[0], nodes[1], chan.2);
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan.2);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan.2);
// Add a 2* and +1 for the fee spike reserve.
- let commit_tx_fee_2_htlc = 2*commit_tx_fee_msat(feerate, 2 + 1, opt_anchors);
+ let commit_tx_fee_2_htlc = 2*commit_tx_fee_msat(feerate, 2 + 1, &channel_type_features);
let recv_value_1 = (chan_stat.value_to_self_msat - chan_stat.channel_reserve_msat - total_routing_fee_msat - commit_tx_fee_2_htlc)/2;
let amt_msat_1 = recv_value_1 + total_routing_fee_msat;
nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]);
// Attempt to trigger a channel reserve violation --> payment failure.
- let commit_tx_fee_2_htlcs = commit_tx_fee_msat(feerate, 2, opt_anchors);
+ let commit_tx_fee_2_htlcs = commit_tx_fee_msat(feerate, 2, &channel_type_features);
let recv_value_2 = chan_stat.value_to_self_msat - amt_msat_1 - chan_stat.channel_reserve_msat - total_routing_fee_msat - commit_tx_fee_2_htlcs + 1;
let amt_msat_2 = recv_value_2 + total_routing_fee_msat;
let mut route_2 = route_1.clone();
assert_eq!(channels1[0].inbound_capacity_msat, 100000 * 1000 - 95000000 - reserve*1000);
}
-fn commit_tx_fee_msat(feerate: u32, num_htlcs: u64, opt_anchors: bool) -> u64 {
- (commitment_tx_base_weight(opt_anchors) + num_htlcs * COMMITMENT_TX_WEIGHT_PER_HTLC) * feerate as u64 / 1000 * 1000
+fn commit_tx_fee_msat(feerate: u32, num_htlcs: u64, channel_type_features: &ChannelTypeFeatures) -> u64 {
+ (commitment_tx_base_weight(channel_type_features) + num_htlcs * COMMITMENT_TX_WEIGHT_PER_HTLC) * feerate as u64 / 1000 * 1000
}
#[test]
let feemsat = 239; // set above
let total_fee_msat = (nodes.len() - 2) as u64 * feemsat;
let feerate = get_feerate!(nodes[0], nodes[1], chan_1.2);
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan_1.2);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan_1.2);
let recv_value_0 = stat01.counterparty_max_htlc_value_in_flight_msat - total_fee_msat;
// 3 for the 3 HTLCs that will be sent, 2* and +1 for the fee spike reserve.
// Also, ensure that each payment has enough to be over the dust limit to
// ensure it'll be included in each commit tx fee calculation.
- let commit_tx_fee_all_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1, opt_anchors);
+ let commit_tx_fee_all_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1, &channel_type_features);
let ensure_htlc_amounts_above_dust_buffer = 3 * (stat01.counterparty_dust_limit_msat + 1000);
if stat01.value_to_self_msat < stat01.channel_reserve_msat + commit_tx_fee_all_htlcs + ensure_htlc_amounts_above_dust_buffer + amt_msat {
break;
// the amount of the first of these aforementioned 3 payments. The reason we split into 3 payments
// is to test the behavior of the holding cell with respect to channel reserve and commit tx fee
// policy.
- let commit_tx_fee_2_htlcs = 2*commit_tx_fee_msat(feerate, 2 + 1, opt_anchors);
+ let commit_tx_fee_2_htlcs = 2*commit_tx_fee_msat(feerate, 2 + 1, &channel_type_features);
let recv_value_1 = (stat01.value_to_self_msat - stat01.channel_reserve_msat - total_fee_msat - commit_tx_fee_2_htlcs)/2;
let amt_msat_1 = recv_value_1 + total_fee_msat;
}
// split the rest to test holding cell
- let commit_tx_fee_3_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1, opt_anchors);
+ let commit_tx_fee_3_htlcs = 2*commit_tx_fee_msat(feerate, 3 + 1, &channel_type_features);
let additional_htlc_cost_msat = commit_tx_fee_3_htlcs - commit_tx_fee_2_htlcs;
let recv_value_21 = recv_value_2/2 - additional_htlc_cost_msat/2;
let recv_value_22 = recv_value_2 - recv_value_21 - total_fee_msat - additional_htlc_cost_msat;
claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_21);
claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_22);
- let commit_tx_fee_0_htlcs = 2*commit_tx_fee_msat(feerate, 1, opt_anchors);
+ let commit_tx_fee_0_htlcs = 2*commit_tx_fee_msat(feerate, 1, &channel_type_features);
let recv_value_3 = commit_tx_fee_2_htlcs - commit_tx_fee_0_htlcs - total_fee_msat;
send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_3);
- let commit_tx_fee_1_htlc = 2*commit_tx_fee_msat(feerate, 1 + 1, opt_anchors);
+ let commit_tx_fee_1_htlc = 2*commit_tx_fee_msat(feerate, 1 + 1, &channel_type_features);
let expected_value_to_self = stat01.value_to_self_msat - (recv_value_1 + total_fee_msat) - (recv_value_21 + total_fee_msat) - (recv_value_22 + total_fee_msat) - (recv_value_3 + total_fee_msat);
let stat0 = get_channel_value_stat!(nodes[0], nodes[1], chan_1.2);
assert_eq!(stat0.value_to_self_msat, expected_value_to_self);
let mut chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
let channel_reserve = chan_stat.channel_reserve_msat;
let feerate = get_feerate!(nodes[0], nodes[1], chan.2);
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan.2);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan.2);
// 2* and +1 HTLCs on the commit tx fee calculation for the fee spike reserve.
- let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1, opt_anchors);
+ let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1, &channel_type_features);
let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], max_can_send);
// Send a payment which passes reserve checks but gets stuck in the holding cell.
let mut chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
let channel_reserve = chan_stat.channel_reserve_msat;
let feerate = get_feerate!(nodes[0], nodes[1], chan.2);
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan.2);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan.2);
// 2* and +1 HTLCs on the commit tx fee calculation for the fee spike reserve.
let amt_1 = 20000;
- let amt_2 = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 2 + 1, opt_anchors) - amt_1;
+ let amt_2 = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 2 + 1, &channel_type_features) - amt_1;
let (route_1, payment_hash_1, payment_preimage_1, payment_secret_1) = get_route_and_payment_hash!(nodes[0], nodes[1], amt_1);
let (route_2, payment_hash_2, _, payment_secret_2) = get_route_and_payment_hash!(nodes[0], nodes[1], amt_2);
let mut chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan_0_1.2);
let channel_reserve = chan_stat.channel_reserve_msat;
let feerate = get_feerate!(nodes[0], nodes[1], chan_0_1.2);
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan_0_1.2);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan_0_1.2);
// Send a payment which passes reserve checks but gets stuck in the holding cell.
- let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1, opt_anchors);
+ let max_can_send = 5000000 - channel_reserve - 2*commit_tx_fee_msat(feerate, 1 + 1, &channel_type_features);
let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], max_can_send);
let payment_event = {
nodes[0].node.send_payment_with_route(&route, our_payment_hash,
let chan_stat = get_channel_value_stat!(nodes[0], nodes[1], chan.2);
let channel_reserve = chan_stat.channel_reserve_msat;
let feerate = get_feerate!(nodes[0], nodes[1], chan.2);
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan.2);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan.2);
// The 2* and +1 are for the fee spike reserve.
- let commit_tx_fee_outbound = 2 * commit_tx_fee_msat(feerate, 1 + 1, opt_anchors);
+ let commit_tx_fee_outbound = 2 * commit_tx_fee_msat(feerate, 1 + 1, &channel_type_features);
let max_can_send = 5000000 - channel_reserve - commit_tx_fee_outbound;
let (route, our_payment_hash, _, our_payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[1], max_can_send);
let mut accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), &accept_channel);
- let opt_anchors = false;
+ let channel_type_features = ChannelTypeFeatures::only_static_remote_key();
let (temporary_channel_id, tx, _) = create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 1_000_000, 42);
let chan = chan_lock.channel_by_id.get(&channel_id).unwrap();
chan.context.get_dust_buffer_feerate(None) as u64
};
- let dust_outbound_htlc_on_holder_tx_msat: u64 = (dust_buffer_feerate * htlc_timeout_tx_weight(opt_anchors) / 1000 + open_channel.dust_limit_satoshis - 1) * 1000;
+ let dust_outbound_htlc_on_holder_tx_msat: u64 = (dust_buffer_feerate * htlc_timeout_tx_weight(&channel_type_features) / 1000 + open_channel.dust_limit_satoshis - 1) * 1000;
let dust_outbound_htlc_on_holder_tx: u64 = config.channel_config.max_dust_htlc_exposure_msat / dust_outbound_htlc_on_holder_tx_msat;
- let dust_inbound_htlc_on_holder_tx_msat: u64 = (dust_buffer_feerate * htlc_success_tx_weight(opt_anchors) / 1000 + open_channel.dust_limit_satoshis - 1) * 1000;
+ let dust_inbound_htlc_on_holder_tx_msat: u64 = (dust_buffer_feerate * htlc_success_tx_weight(&channel_type_features) / 1000 + open_channel.dust_limit_satoshis - 1) * 1000;
let dust_inbound_htlc_on_holder_tx: u64 = config.channel_config.max_dust_htlc_exposure_msat / dust_inbound_htlc_on_holder_tx_msat;
let dust_htlc_on_counterparty_tx: u64 = 4;
assert_eq!(funding_outpoint.to_channel_id(), chan_id);
let chan_feerate = get_feerate!(nodes[0], nodes[1], chan_id) as u64;
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan_id);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan_id);
assert_eq!(vec![Balance::ClaimableOnChannelClose {
- claimable_amount_satoshis: 1_000_000 - 1_000 - chan_feerate * channel::commitment_tx_base_weight(opt_anchors) / 1000
+ claimable_amount_satoshis: 1_000_000 - 1_000 - chan_feerate * channel::commitment_tx_base_weight(&channel_type_features) / 1000
}],
nodes[0].chain_monitor.chain_monitor.get_monitor(funding_outpoint).unwrap().get_claimable_balances());
assert_eq!(vec![Balance::ClaimableOnChannelClose { claimable_amount_satoshis: 1_000, }],
assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
assert_eq!(vec![Balance::ClaimableAwaitingConfirmations {
- claimable_amount_satoshis: 1_000_000 - 1_000 - chan_feerate * channel::commitment_tx_base_weight(opt_anchors) / 1000,
+ claimable_amount_satoshis: 1_000_000 - 1_000 - chan_feerate * channel::commitment_tx_base_weight(&channel_type_features) / 1000,
confirmation_height: nodes[0].best_block_info().1 + ANTI_REORG_DELAY - 1,
}],
nodes[0].chain_monitor.chain_monitor.get_monitor(funding_outpoint).unwrap().get_claimable_balances());
let htlc_cltv_timeout = nodes[0].best_block_info().1 + TEST_FINAL_CLTV + 1; // Note ChannelManager adds one to CLTV timeouts for safety
let chan_feerate = get_feerate!(nodes[0], nodes[1], chan_id) as u64;
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan_id);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan_id);
let remote_txn = get_local_commitment_txn!(nodes[1], chan_id);
let sent_htlc_balance = Balance::MaybeTimeoutClaimableHTLC {
// as claimable. A lists both its to-self balance and the (possibly-claimable) HTLCs.
assert_eq!(sorted_vec(vec![Balance::ClaimableOnChannelClose {
claimable_amount_satoshis: 1_000_000 - 3_000 - 4_000 - 1_000 - 3 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
}, sent_htlc_balance.clone(), sent_htlc_timeout_balance.clone()]),
sorted_vec(nodes[0].chain_monitor.chain_monitor.get_monitor(funding_outpoint).unwrap().get_claimable_balances()));
assert_eq!(sorted_vec(vec![Balance::ClaimableOnChannelClose {
1_000 - // The push_msat value in satoshis
3 - // The dust HTLC value in satoshis
// The commitment transaction fee with two HTLC outputs:
- chan_feerate * (channel::commitment_tx_base_weight(opt_anchors) +
+ chan_feerate * (channel::commitment_tx_base_weight(&channel_type_features) +
if prev_commitment_tx { 1 } else { 2 } *
channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
}, sent_htlc_timeout_balance.clone()];
assert_eq!(sorted_vec(vec![Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 1_000_000 - 3_000 - 4_000 - 1_000 - 3 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
confirmation_height: nodes[0].best_block_info().1 + ANTI_REORG_DELAY - 1,
}, sent_htlc_balance.clone(), sent_htlc_timeout_balance.clone()]),
sorted_vec(nodes[0].chain_monitor.chain_monitor.get_monitor(funding_outpoint).unwrap().get_claimable_balances()));
expect_payment_claimed!(nodes[1], payment_hash_2, 20_000_000);
let chan_feerate = get_feerate!(nodes[0], nodes[1], chan_id) as u64;
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan_id);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan_id);
// Get nodes[0]'s commitment transaction and HTLC-Timeout transactions
let as_txn = get_local_commitment_txn!(nodes[0], chan_id);
assert_eq!(sorted_vec(vec![Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 1_000_000 - 10_000 - 20_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
confirmation_height: node_a_commitment_claimable,
}, htlc_balance_known_preimage.clone(), htlc_balance_unknown_preimage.clone()]),
sorted_vec(nodes[0].chain_monitor.chain_monitor.get_monitor(funding_outpoint).unwrap().get_claimable_balances()));
connect_blocks(&nodes[0], TEST_FINAL_CLTV - 1);
assert_eq!(sorted_vec(vec![Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 1_000_000 - 10_000 - 20_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
confirmation_height: node_a_commitment_claimable,
}, htlc_balance_known_preimage.clone(), htlc_balance_unknown_preimage.clone()]),
sorted_vec(nodes[0].chain_monitor.chain_monitor.get_monitor(funding_outpoint).unwrap().get_claimable_balances()));
// call, as described, two hunks down.
assert_eq!(sorted_vec(vec![Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 1_000_000 - 10_000 - 20_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
confirmation_height: node_a_commitment_claimable,
}, Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 10_000,
expect_payment_sent!(nodes[0], payment_preimage_2);
assert_eq!(sorted_vec(vec![Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 1_000_000 - 10_000 - 20_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
confirmation_height: node_a_commitment_claimable,
}, Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 10_000,
assert_eq!(sorted_vec(vec![Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 1_000_000 - 10_000 - 20_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
confirmation_height: node_a_commitment_claimable,
}, Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 10_000,
let htlc_cltv_timeout = nodes[0].best_block_info().1 + TEST_FINAL_CLTV + 1; // Note ChannelManager adds one to CLTV timeouts for safety
let chan_feerate = get_feerate!(nodes[0], nodes[1], chan_id) as u64;
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan_id);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan_id);
let a_sent_htlc_balance = Balance::MaybeTimeoutClaimableHTLC {
claimable_amount_satoshis: 10_000,
assert_eq!(sorted_vec(vec![Balance::ClaimableOnChannelClose {
claimable_amount_satoshis: 1_000_000 - 500_000 - 10_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
}, a_received_htlc_balance.clone(), a_sent_htlc_balance.clone()]),
sorted_vec(nodes[0].chain_monitor.chain_monitor.get_monitor(funding_outpoint).unwrap().get_claimable_balances()));
let node_a_commitment_claimable = nodes[0].best_block_info().1 + BREAKDOWN_TIMEOUT as u32;
let as_pre_spend_claims = sorted_vec(vec![Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 1_000_000 - 500_000 - 10_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
confirmation_height: node_a_commitment_claimable,
}, a_received_htlc_balance.clone(), a_sent_htlc_balance.clone()]);
let as_timeout_claimable_height = nodes[0].best_block_info().1 + (BREAKDOWN_TIMEOUT as u32) - 1;
assert_eq!(sorted_vec(vec![Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 1_000_000 - 500_000 - 10_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
confirmation_height: node_a_commitment_claimable,
}, a_received_htlc_balance.clone(), Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 10_000,
mine_transaction(&nodes[0], &bs_htlc_timeout_claim[0]);
assert_eq!(sorted_vec(vec![Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 1_000_000 - 500_000 - 10_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
confirmation_height: node_a_commitment_claimable,
}, a_received_htlc_balance.clone(), Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 10_000,
connect_blocks(&nodes[0], 1);
assert_eq!(sorted_vec(vec![Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 1_000_000 - 500_000 - 10_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
confirmation_height: node_a_commitment_claimable,
}, Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 10_000,
// Get the latest commitment transaction from A and then update the fee to revoke it
let as_revoked_txn = get_local_commitment_txn!(nodes[0], chan_id);
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan_id);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan_id);
let chan_feerate = get_feerate!(nodes[0], nodes[1], chan_id) as u64;
let to_self_unclaimed_balance = Balance::CounterpartyRevokedOutputClaimable {
claimable_amount_satoshis: 1_000_000 - 100_000 - 3_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 3 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 3 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
};
let to_self_claimed_avail_height;
let largest_htlc_unclaimed_balance = Balance::CounterpartyRevokedOutputClaimable {
};
let to_self_claimed_balance = Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 1_000_000 - 100_000 - 3_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 3 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000
+ (channel::commitment_tx_base_weight(&channel_type_features) + 3 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000
- chan_feerate * claim_txn[3].weight() as u64 / 1000,
confirmation_height: to_self_claimed_avail_height,
};
confirmation_height: nodes[1].best_block_info().1 + 1,
}, Balance::ClaimableAwaitingConfirmations {
claimable_amount_satoshis: 1_000_000 - 100_000 - 3_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 3 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000
+ (channel::commitment_tx_base_weight(&channel_type_features) + 3 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000
- chan_feerate * claim_txn[3].weight() as u64 / 1000,
confirmation_height: to_self_claimed_avail_height,
}, Balance::ClaimableAwaitingConfirmations {
claim_payment(&nodes[0], &[&nodes[1]], payment_preimage);
let chan_feerate = get_feerate!(nodes[0], nodes[1], chan_id) as u64;
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan_id);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan_id);
// B will generate an HTLC-Success from its revoked commitment tx
mine_transaction(&nodes[1], &revoked_local_txn[0]);
let as_balances = sorted_vec(vec![Balance::ClaimableAwaitingConfirmations {
// to_remote output in B's revoked commitment
claimable_amount_satoshis: 1_000_000 - 11_000 - 3_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
confirmation_height: to_remote_conf_height,
}, Balance::CounterpartyRevokedOutputClaimable {
// to_self output in B's revoked commitment
assert_eq!(sorted_vec(vec![Balance::ClaimableAwaitingConfirmations {
// to_remote output in B's revoked commitment
claimable_amount_satoshis: 1_000_000 - 11_000 - 3_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
confirmation_height: to_remote_conf_height,
}, Balance::CounterpartyRevokedOutputClaimable {
// to_self output in B's revoked commitment
check_spends!(as_revoked_txn[0], funding_tx);
check_spends!(as_revoked_txn[1], as_revoked_txn[0]); // The HTLC-Claim transaction
- let opt_anchors = get_opt_anchors!(nodes[0], nodes[1], chan_id);
+ let channel_type_features = get_channel_type_features!(nodes[0], nodes[1], chan_id);
let chan_feerate = get_feerate!(nodes[0], nodes[1], chan_id) as u64;
{
}, Balance::CounterpartyRevokedOutputClaimable {
// to_self output in A's revoked commitment
claimable_amount_satoshis: 1_000_000 - 100_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
}, Balance::CounterpartyRevokedOutputClaimable { // HTLC 1
claimable_amount_satoshis: 4_000,
}, Balance::CounterpartyRevokedOutputClaimable { // HTLC 2
}, Balance::CounterpartyRevokedOutputClaimable {
// to_self output in A's revoked commitment
claimable_amount_satoshis: 1_000_000 - 100_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
}, Balance::CounterpartyRevokedOutputClaimable { // HTLC 1
claimable_amount_satoshis: 4_000,
}, Balance::CounterpartyRevokedOutputClaimable { // HTLC 2
assert_eq!(sorted_vec(vec![Balance::CounterpartyRevokedOutputClaimable {
// to_self output in A's revoked commitment
claimable_amount_satoshis: 1_000_000 - 100_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
}, Balance::CounterpartyRevokedOutputClaimable { // HTLC 1
claimable_amount_satoshis: 4_000,
}, Balance::CounterpartyRevokedOutputClaimable { // HTLC 2
assert_eq!(sorted_vec(vec![Balance::CounterpartyRevokedOutputClaimable {
// to_self output in A's revoked commitment
claimable_amount_satoshis: 1_000_000 - 100_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
}, Balance::CounterpartyRevokedOutputClaimable { // HTLC 1
claimable_amount_satoshis: 4_000,
}, Balance::ClaimableAwaitingConfirmations { // HTLC 2
assert_eq!(sorted_vec(vec![Balance::CounterpartyRevokedOutputClaimable {
// to_self output in A's revoked commitment
claimable_amount_satoshis: 1_000_000 - 100_000 - chan_feerate *
- (channel::commitment_tx_base_weight(opt_anchors) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
+ (channel::commitment_tx_base_weight(&channel_type_features) + 2 * channel::COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000,
}, Balance::CounterpartyRevokedOutputClaimable { // HTLC 1
claimable_amount_satoshis: 4_000,
}]),
use core::ops::Deref;
use core::sync::atomic::{AtomicUsize, Ordering};
use crate::io::{self, Error};
+use crate::ln::features::ChannelTypeFeatures;
use crate::ln::msgs::{DecodeError, MAX_VALUE_MSAT};
use crate::util::atomic_counter::AtomicCounter;
use crate::util::chacha20::ChaCha20;
pub fn get_channel_parameters(&self) -> &ChannelTransactionParameters {
self.channel_parameters.as_ref().unwrap()
}
- /// Returns whether anchors should be used.
+ /// Returns the channel type features of the channel parameters. Should be helpful for
+ /// determining a channel's category, i. e. legacy/anchors/taproot/etc.
///
/// Will panic if [`ChannelSigner::provide_channel_parameters`] has not been called before.
- pub fn opt_anchors(&self) -> bool {
- self.get_channel_parameters().opt_anchors.is_some()
+ pub fn channel_type_features(&self) -> &ChannelTypeFeatures {
+ &self.get_channel_parameters().channel_type_features
}
/// Sign the single input of `spend_tx` at index `input_idx`, which spends the output described
/// by `descriptor`, returning the witness stack for the input.
let mut htlc_sigs = Vec::with_capacity(commitment_tx.htlcs().len());
for htlc in commitment_tx.htlcs() {
let channel_parameters = self.get_channel_parameters();
- let htlc_tx = chan_utils::build_htlc_transaction(&commitment_txid, commitment_tx.feerate_per_kw(), self.holder_selected_contest_delay(), htlc, self.opt_anchors(), channel_parameters.opt_non_zero_fee_anchors.is_some(), &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
- let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, self.opt_anchors(), &keys);
- let htlc_sighashtype = if self.opt_anchors() { EcdsaSighashType::SinglePlusAnyoneCanPay } else { EcdsaSighashType::All };
+ let htlc_tx = chan_utils::build_htlc_transaction(&commitment_txid, commitment_tx.feerate_per_kw(), self.holder_selected_contest_delay(), htlc, &channel_parameters.channel_type_features, &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
+ let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, self.channel_type_features(), &keys);
+ let htlc_sighashtype = if self.channel_type_features().supports_anchors_zero_fee_htlc_tx() { EcdsaSighashType::SinglePlusAnyoneCanPay } else { EcdsaSighashType::All };
let htlc_sighash = hash_to_message!(&sighash::SighashCache::new(&htlc_tx).segwit_signature_hash(0, &htlc_redeemscript, htlc.amount_msat / 1000, htlc_sighashtype).unwrap()[..]);
let holder_htlc_key = chan_utils::derive_private_key(&secp_ctx, &keys.per_commitment_point, &self.htlc_base_key);
htlc_sigs.push(sign(secp_ctx, &htlc_sighash, &holder_htlc_key));
let witness_script = {
let counterparty_htlcpubkey = chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &self.counterparty_pubkeys().htlc_basepoint);
let holder_htlcpubkey = chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &self.pubkeys().htlc_basepoint);
- chan_utils::get_htlc_redeemscript_with_explicit_keys(&htlc, self.opt_anchors(), &counterparty_htlcpubkey, &holder_htlcpubkey, &revocation_pubkey)
+ chan_utils::get_htlc_redeemscript_with_explicit_keys(&htlc, self.channel_type_features(), &counterparty_htlcpubkey, &holder_htlcpubkey, &revocation_pubkey)
};
let mut sighash_parts = sighash::SighashCache::new(justice_tx);
let sighash = hash_to_message!(&sighash_parts.segwit_signature_hash(input, &witness_script, amount, EcdsaSighashType::All).unwrap()[..]);
let revocation_pubkey = chan_utils::derive_public_revocation_key(&secp_ctx, &per_commitment_point, &self.pubkeys().revocation_basepoint);
let counterparty_htlcpubkey = chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &self.counterparty_pubkeys().htlc_basepoint);
let htlcpubkey = chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &self.pubkeys().htlc_basepoint);
- let witness_script = chan_utils::get_htlc_redeemscript_with_explicit_keys(&htlc, self.opt_anchors(), &counterparty_htlcpubkey, &htlcpubkey, &revocation_pubkey);
+ let witness_script = chan_utils::get_htlc_redeemscript_with_explicit_keys(&htlc, self.channel_type_features(), &counterparty_htlcpubkey, &htlcpubkey, &revocation_pubkey);
let mut sighash_parts = sighash::SighashCache::new(htlc_tx);
let sighash = hash_to_message!(&sighash_parts.segwit_signature_hash(input, &witness_script, amount, EcdsaSighashType::All).unwrap()[..]);
Ok(sign_with_aux_rand(secp_ctx, &sighash, &htlc_key, &self))
use crate::events::bump_transaction::HTLCDescriptor;
use crate::util::ser::{Writeable, Writer};
use crate::io::Error;
+use crate::ln::features::ChannelTypeFeatures;
/// Initial value for revoked commitment downward counter
pub const INITIAL_REVOKED_COMMITMENT_NUMBER: u64 = 1 << 48;
}
}
- pub fn opt_anchors(&self) -> bool { self.inner.opt_anchors() }
+ pub fn channel_type_features(&self) -> &ChannelTypeFeatures { self.inner.channel_type_features() }
#[cfg(test)]
pub fn get_enforcement_state(&self) -> MutexGuard<EnforcementState> {
for (this_htlc, sig) in trusted_tx.htlcs().iter().zip(&commitment_tx.counterparty_htlc_sigs) {
assert!(this_htlc.transaction_output_index.is_some());
let keys = trusted_tx.keys();
- let htlc_tx = chan_utils::build_htlc_transaction(&commitment_txid, trusted_tx.feerate_per_kw(), holder_csv, &this_htlc, self.opt_anchors(), false, &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
+ let htlc_tx = chan_utils::build_htlc_transaction(&commitment_txid, trusted_tx.feerate_per_kw(), holder_csv, &this_htlc, self.channel_type_features(), &keys.broadcaster_delayed_payment_key, &keys.revocation_key);
- let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&this_htlc, self.opt_anchors(), &keys);
+ let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&this_htlc, self.channel_type_features(), &keys);
- let sighash_type = if self.opt_anchors() {
+ let sighash_type = if self.channel_type_features().supports_anchors_zero_fee_htlc_tx() {
EcdsaSighashType::SinglePlusAnyoneCanPay
} else {
EcdsaSighashType::All
projects / rust-lightning / commitdiff