use crate::ln::features::ChannelTypeFeatures;
use crate::ln::PaymentPreimage;
use crate::prelude::*;
-use crate::sign::{ChannelSigner, EcdsaChannelSigner, SignerProvider};
+use crate::sign::{EcdsaChannelSigner, SignerProvider, WriteableEcdsaChannelSigner};
use crate::sync::Mutex;
use crate::util::logger::Logger;
}
/// Derives the channel signer required to sign the anchor input.
- pub fn derive_channel_signer<SP: Deref>(&self, signer_provider: &SP) -> <SP::Target as SignerProvider>::Signer
+ pub fn derive_channel_signer<S: WriteableEcdsaChannelSigner, SP: Deref>(&self, signer_provider: &SP) -> S
where
- SP::Target: SignerProvider
+ SP::Target: SignerProvider<Signer = S>
{
let mut signer = signer_provider.derive_channel_signer(
self.channel_derivation_parameters.value_satoshis,
}
/// Derives the channel signer required to sign the HTLC input.
- pub fn derive_channel_signer<SP: Deref>(&self, signer_provider: &SP) -> <SP::Target as SignerProvider>::Signer
+ pub fn derive_channel_signer<S: WriteableEcdsaChannelSigner, SP: Deref>(&self, signer_provider: &SP) -> S
where
- SP::Target: SignerProvider
+ SP::Target: SignerProvider<Signer = S>
{
let mut signer = signer_provider.derive_channel_signer(
self.channel_derivation_parameters.value_satoshis,
/// An input that must be included in a transaction when performing coin selection through
/// [`CoinSelectionSource::select_confirmed_utxos`]. It is guaranteed to be a SegWit input, so it
/// must have an empty [`TxIn::script_sig`] when spent.
+#[derive(Clone, Debug, Hash, PartialOrd, Ord, PartialEq, Eq)]
pub struct Input {
/// The unique identifier of the input.
pub outpoint: OutPoint,
/// An unspent transaction output that is available to spend resulting from a successful
/// [`CoinSelection`] attempt.
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Hash, PartialOrd, Ord, PartialEq, Eq)]
pub struct Utxo {
/// The unique identifier of the output.
pub outpoint: OutPoint,
/// The result of a successful coin selection attempt for a transaction requiring additional UTXOs
/// to cover its fees.
+#[derive(Clone, Debug)]
pub struct CoinSelection {
/// The set of UTXOs (with at least 1 confirmation) to spend and use within a transaction
/// requiring additional fees.
/// which UTXOs to double spend is left to the implementation, but it must strive to keep the
/// set of other claims being double spent to a minimum.
fn select_confirmed_utxos(
- &self, claim_id: ClaimId, must_spend: &[Input], must_pay_to: &[TxOut],
+ &self, claim_id: ClaimId, must_spend: Vec<Input>, must_pay_to: &[TxOut],
target_feerate_sat_per_1000_weight: u32,
) -> Result<CoinSelection, ()>;
/// Signs and provides the full witness for all inputs within the transaction known to the
/// trait (i.e., any provided via [`CoinSelectionSource::select_confirmed_utxos`]).
- fn sign_tx(&self, tx: &mut Transaction) -> Result<(), ()>;
+ fn sign_tx(&self, tx: Transaction) -> Result<Transaction, ()>;
}
/// An alternative to [`CoinSelectionSource`] that can be implemented and used along [`Wallet`] to
/// Signs and provides the full [`TxIn::script_sig`] and [`TxIn::witness`] for all inputs within
/// the transaction known to the wallet (i.e., any provided via
/// [`WalletSource::list_confirmed_utxos`]).
- fn sign_tx(&self, tx: &mut Transaction) -> Result<(), ()>;
+ fn sign_tx(&self, tx: Transaction) -> Result<Transaction, ()>;
}
/// A wrapper over [`WalletSource`] that implements [`CoinSelection`] by preferring UTXOs that would
L::Target: Logger
{
fn select_confirmed_utxos(
- &self, claim_id: ClaimId, must_spend: &[Input], must_pay_to: &[TxOut],
+ &self, claim_id: ClaimId, must_spend: Vec<Input>, must_pay_to: &[TxOut],
target_feerate_sat_per_1000_weight: u32,
) -> Result<CoinSelection, ()> {
let utxos = self.source.list_confirmed_utxos()?;
.or_else(|_| do_coin_selection(true, true))
}
- fn sign_tx(&self, tx: &mut Transaction) -> Result<(), ()> {
+ fn sign_tx(&self, tx: Transaction) -> Result<Transaction, ()> {
self.source.sign_tx(tx)
}
}
satisfaction_weight: commitment_tx.weight() as u64 + ANCHOR_INPUT_WITNESS_WEIGHT + EMPTY_SCRIPT_SIG_WEIGHT,
}];
let coin_selection = self.utxo_source.select_confirmed_utxos(
- claim_id, &must_spend, &[], anchor_target_feerate_sat_per_1000_weight,
+ claim_id, must_spend, &[], anchor_target_feerate_sat_per_1000_weight,
)?;
let mut anchor_tx = Transaction {
let unsigned_tx_weight = anchor_tx.weight() as u64 - (anchor_tx.input.len() as u64 * EMPTY_SCRIPT_SIG_WEIGHT);
log_debug!(self.logger, "Signing anchor transaction {}", anchor_txid);
- self.utxo_source.sign_tx(&mut anchor_tx)?;
+ anchor_tx = self.utxo_source.sign_tx(anchor_tx)?;
+
let signer = anchor_descriptor.derive_channel_signer(&self.signer_provider);
let anchor_sig = signer.sign_holder_anchor_input(&anchor_tx, 0, &self.secp)?;
anchor_tx.input[0].witness = anchor_descriptor.tx_input_witness(&anchor_sig);
log_debug!(self.logger, "Peforming coin selection for HTLC transaction targeting {} sat/kW",
target_feerate_sat_per_1000_weight);
+ #[cfg(debug_assertions)]
+ let must_spend_satisfaction_weight =
+ must_spend.iter().map(|input| input.satisfaction_weight).sum::<u64>();
let coin_selection = self.utxo_source.select_confirmed_utxos(
- claim_id, &must_spend, &htlc_tx.output, target_feerate_sat_per_1000_weight,
+ claim_id, must_spend, &htlc_tx.output, target_feerate_sat_per_1000_weight,
)?;
#[cfg(debug_assertions)]
let total_satisfaction_weight =
coin_selection.confirmed_utxos.iter().map(|utxo| utxo.satisfaction_weight).sum::<u64>() +
- must_spend.iter().map(|input| input.satisfaction_weight).sum::<u64>();
+ must_spend_satisfaction_weight;
self.process_coin_selection(&mut htlc_tx, coin_selection);
#[cfg(debug_assertions)]
let unsigned_tx_weight = htlc_tx.weight() as u64 - (htlc_tx.input.len() as u64 * EMPTY_SCRIPT_SIG_WEIGHT);
log_debug!(self.logger, "Signing HTLC transaction {}", htlc_tx.txid());
- self.utxo_source.sign_tx(&mut htlc_tx)?;
+ htlc_tx = self.utxo_source.sign_tx(htlc_tx)?;
+
let mut signers = BTreeMap::new();
for (idx, htlc_descriptor) in htlc_descriptors.iter().enumerate() {
let signer = signers.entry(htlc_descriptor.channel_derivation_parameters.keys_id)
projects / rust-lightning / blobdiff