Remove WriteableEcdsaChannelSigner trait
authorJeffrey Czyz <jkczyz@gmail.com>
Fri, 10 May 2024 19:32:48 +0000 (14:32 -0500)
committerJeffrey Czyz <jkczyz@gmail.com>
Fri, 10 May 2024 22:17:41 +0000 (17:17 -0500)
WriteableEcdsaChannelSigner is no longer needed now that
EcdsaChannelSigner isn't written in OnchainTxHandler.

13 files changed:
lightning/src/chain/chainmonitor.rs
lightning/src/chain/channelmonitor.rs
lightning/src/chain/mod.rs
lightning/src/chain/onchaintx.rs
lightning/src/chain/package.rs
lightning/src/events/bump_transaction.rs
lightning/src/ln/channel.rs
lightning/src/ln/channelmanager.rs
lightning/src/sign/ecdsa.rs
lightning/src/sign/mod.rs
lightning/src/util/persist.rs
lightning/src/util/test_channel_signer.rs
lightning/src/util/test_utils.rs

index b47fd39087b3dbe92a29d1507b2ee8c952db3e96..04f72d4ce3bfa9c074551988b4a386fff66be0f6 100644 (file)
@@ -32,7 +32,7 @@ use crate::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
 use crate::chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, Balance, MonitorEvent, TransactionOutputs, WithChannelMonitor};
 use crate::chain::transaction::{OutPoint, TransactionData};
 use crate::ln::types::ChannelId;
-use crate::sign::ecdsa::WriteableEcdsaChannelSigner;
+use crate::sign::ecdsa::EcdsaChannelSigner;
 use crate::events;
 use crate::events::{Event, EventHandler};
 use crate::util::logger::{Logger, WithContext};
@@ -101,7 +101,7 @@ use bitcoin::secp256k1::PublicKey;
 ///
 /// [`TrustedCommitmentTransaction::revokeable_output_index`]: crate::ln::chan_utils::TrustedCommitmentTransaction::revokeable_output_index
 /// [`TrustedCommitmentTransaction::build_to_local_justice_tx`]: crate::ln::chan_utils::TrustedCommitmentTransaction::build_to_local_justice_tx
-pub trait Persist<ChannelSigner: WriteableEcdsaChannelSigner> {
+pub trait Persist<ChannelSigner: EcdsaChannelSigner> {
        /// Persist a new channel's data in response to a [`chain::Watch::watch_channel`] call. This is
        /// called by [`ChannelManager`] for new channels, or may be called directly, e.g. on startup.
        ///
@@ -163,7 +163,7 @@ pub trait Persist<ChannelSigner: WriteableEcdsaChannelSigner> {
        fn archive_persisted_channel(&self, channel_funding_outpoint: OutPoint);
 }
 
-struct MonitorHolder<ChannelSigner: WriteableEcdsaChannelSigner> {
+struct MonitorHolder<ChannelSigner: EcdsaChannelSigner> {
        monitor: ChannelMonitor<ChannelSigner>,
        /// The full set of pending monitor updates for this Channel.
        ///
@@ -174,7 +174,7 @@ struct MonitorHolder<ChannelSigner: WriteableEcdsaChannelSigner> {
        pending_monitor_updates: Mutex<Vec<u64>>,
 }
 
-impl<ChannelSigner: WriteableEcdsaChannelSigner> MonitorHolder<ChannelSigner> {
+impl<ChannelSigner: EcdsaChannelSigner> MonitorHolder<ChannelSigner> {
        fn has_pending_updates(&self, pending_monitor_updates_lock: &MutexGuard<Vec<u64>>) -> bool {
                !pending_monitor_updates_lock.is_empty()
        }
@@ -184,12 +184,12 @@ impl<ChannelSigner: WriteableEcdsaChannelSigner> MonitorHolder<ChannelSigner> {
 ///
 /// Note that this holds a mutex in [`ChainMonitor`] and may block other events until it is
 /// released.
-pub struct LockedChannelMonitor<'a, ChannelSigner: WriteableEcdsaChannelSigner> {
+pub struct LockedChannelMonitor<'a, ChannelSigner: EcdsaChannelSigner> {
        lock: RwLockReadGuard<'a, HashMap<OutPoint, MonitorHolder<ChannelSigner>>>,
        funding_txo: OutPoint,
 }
 
-impl<ChannelSigner: WriteableEcdsaChannelSigner> Deref for LockedChannelMonitor<'_, ChannelSigner> {
+impl<ChannelSigner: EcdsaChannelSigner> Deref for LockedChannelMonitor<'_, ChannelSigner> {
        type Target = ChannelMonitor<ChannelSigner>;
        fn deref(&self) -> &ChannelMonitor<ChannelSigner> {
                &self.lock.get(&self.funding_txo).expect("Checked at construction").monitor
@@ -212,7 +212,7 @@ impl<ChannelSigner: WriteableEcdsaChannelSigner> Deref for LockedChannelMonitor<
 /// [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
 /// [module-level documentation]: crate::chain::chainmonitor
 /// [`rebroadcast_pending_claims`]: Self::rebroadcast_pending_claims
-pub struct ChainMonitor<ChannelSigner: WriteableEcdsaChannelSigner, C: Deref, T: Deref, F: Deref, L: Deref, P: Deref>
+pub struct ChainMonitor<ChannelSigner: EcdsaChannelSigner, C: Deref, T: Deref, F: Deref, L: Deref, P: Deref>
        where C::Target: chain::Filter,
         T::Target: BroadcasterInterface,
         F::Target: FeeEstimator,
@@ -236,7 +236,7 @@ pub struct ChainMonitor<ChannelSigner: WriteableEcdsaChannelSigner, C: Deref, T:
        event_notifier: Notifier,
 }
 
-impl<ChannelSigner: WriteableEcdsaChannelSigner, C: Deref, T: Deref, F: Deref, L: Deref, P: Deref> ChainMonitor<ChannelSigner, C, T, F, L, P>
+impl<ChannelSigner: EcdsaChannelSigner, C: Deref, T: Deref, F: Deref, L: Deref, P: Deref> ChainMonitor<ChannelSigner, C, T, F, L, P>
 where C::Target: chain::Filter,
            T::Target: BroadcasterInterface,
            F::Target: FeeEstimator,
@@ -623,7 +623,7 @@ where C::Target: chain::Filter,
        }
 }
 
-impl<ChannelSigner: WriteableEcdsaChannelSigner, C: Deref, T: Deref, F: Deref, L: Deref, P: Deref>
+impl<ChannelSigner: EcdsaChannelSigner, C: Deref, T: Deref, F: Deref, L: Deref, P: Deref>
 chain::Listen for ChainMonitor<ChannelSigner, C, T, F, L, P>
 where
        C::Target: chain::Filter,
@@ -652,7 +652,7 @@ where
        }
 }
 
-impl<ChannelSigner: WriteableEcdsaChannelSigner, C: Deref, T: Deref, F: Deref, L: Deref, P: Deref>
+impl<ChannelSigner: EcdsaChannelSigner, C: Deref, T: Deref, F: Deref, L: Deref, P: Deref>
 chain::Confirm for ChainMonitor<ChannelSigner, C, T, F, L, P>
 where
        C::Target: chain::Filter,
@@ -706,7 +706,7 @@ where
        }
 }
 
-impl<ChannelSigner: WriteableEcdsaChannelSigner, C: Deref , T: Deref , F: Deref , L: Deref , P: Deref >
+impl<ChannelSigner: EcdsaChannelSigner, C: Deref , T: Deref , F: Deref , L: Deref , P: Deref >
 chain::Watch<ChannelSigner> for ChainMonitor<ChannelSigner, C, T, F, L, P>
 where C::Target: chain::Filter,
            T::Target: BroadcasterInterface,
@@ -841,7 +841,7 @@ where C::Target: chain::Filter,
        }
 }
 
-impl<ChannelSigner: WriteableEcdsaChannelSigner, C: Deref, T: Deref, F: Deref, L: Deref, P: Deref> events::EventsProvider for ChainMonitor<ChannelSigner, C, T, F, L, P>
+impl<ChannelSigner: EcdsaChannelSigner, C: Deref, T: Deref, F: Deref, L: Deref, P: Deref> events::EventsProvider for ChainMonitor<ChannelSigner, C, T, F, L, P>
        where C::Target: chain::Filter,
              T::Target: BroadcasterInterface,
              F::Target: FeeEstimator,
index 6bb79a73a3297068c5b4dc00b025da32ab5abad0..3ca15e48337f3bb2da922814be39f0acde240818 100644 (file)
@@ -43,7 +43,7 @@ use crate::chain;
 use crate::chain::{BestBlock, WatchedOutput};
 use crate::chain::chaininterface::{BroadcasterInterface, FeeEstimator, LowerBoundedFeeEstimator};
 use crate::chain::transaction::{OutPoint, TransactionData};
-use crate::sign::{ChannelDerivationParameters, HTLCDescriptor, SpendableOutputDescriptor, StaticPaymentOutputDescriptor, DelayedPaymentOutputDescriptor, ecdsa::WriteableEcdsaChannelSigner, SignerProvider, EntropySource};
+use crate::sign::{ChannelDerivationParameters, HTLCDescriptor, SpendableOutputDescriptor, StaticPaymentOutputDescriptor, DelayedPaymentOutputDescriptor, ecdsa::EcdsaChannelSigner, SignerProvider, EntropySource};
 use crate::chain::onchaintx::{ClaimEvent, FeerateStrategy, OnchainTxHandler};
 use crate::chain::package::{CounterpartyOfferedHTLCOutput, CounterpartyReceivedHTLCOutput, HolderFundingOutput, HolderHTLCOutput, PackageSolvingData, PackageTemplate, RevokedOutput, RevokedHTLCOutput};
 use crate::chain::Filter;
@@ -774,14 +774,14 @@ impl Readable for IrrevocablyResolvedHTLC {
 /// the "reorg path" (ie disconnecting blocks until you find a common ancestor from both the
 /// returned block hash and the the current chain and then reconnecting blocks to get to the
 /// best chain) upon deserializing the object!
-pub struct ChannelMonitor<Signer: WriteableEcdsaChannelSigner> {
+pub struct ChannelMonitor<Signer: EcdsaChannelSigner> {
        #[cfg(test)]
        pub(crate) inner: Mutex<ChannelMonitorImpl<Signer>>,
        #[cfg(not(test))]
        pub(super) inner: Mutex<ChannelMonitorImpl<Signer>>,
 }
 
-impl<Signer: WriteableEcdsaChannelSigner> Clone for ChannelMonitor<Signer> where Signer: Clone {
+impl<Signer: EcdsaChannelSigner> Clone for ChannelMonitor<Signer> where Signer: Clone {
        fn clone(&self) -> Self {
                let inner = self.inner.lock().unwrap().clone();
                ChannelMonitor::from_impl(inner)
@@ -789,7 +789,7 @@ impl<Signer: WriteableEcdsaChannelSigner> Clone for ChannelMonitor<Signer> where
 }
 
 #[derive(Clone, PartialEq)]
-pub(crate) struct ChannelMonitorImpl<Signer: WriteableEcdsaChannelSigner> {
+pub(crate) struct ChannelMonitorImpl<Signer: EcdsaChannelSigner> {
        latest_update_id: u64,
        commitment_transaction_number_obscure_factor: u64,
 
@@ -943,7 +943,7 @@ pub(crate) struct ChannelMonitorImpl<Signer: WriteableEcdsaChannelSigner> {
 /// Transaction outputs to watch for on-chain spends.
 pub type TransactionOutputs = (Txid, Vec<(u32, TxOut)>);
 
-impl<Signer: WriteableEcdsaChannelSigner> PartialEq for ChannelMonitor<Signer> where Signer: PartialEq {
+impl<Signer: EcdsaChannelSigner> PartialEq for ChannelMonitor<Signer> where Signer: PartialEq {
        fn eq(&self, other: &Self) -> bool {
                // We need some kind of total lockorder. Absent a better idea, we sort by position in
                // memory and take locks in that order (assuming that we can't move within memory while a
@@ -955,7 +955,7 @@ impl<Signer: WriteableEcdsaChannelSigner> PartialEq for ChannelMonitor<Signer> w
        }
 }
 
-impl<Signer: WriteableEcdsaChannelSigner> Writeable for ChannelMonitor<Signer> {
+impl<Signer: EcdsaChannelSigner> Writeable for ChannelMonitor<Signer> {
        fn write<W: Writer>(&self, writer: &mut W) -> Result<(), Error> {
                self.inner.lock().unwrap().write(writer)
        }
@@ -965,7 +965,7 @@ impl<Signer: WriteableEcdsaChannelSigner> Writeable for ChannelMonitor<Signer> {
 const SERIALIZATION_VERSION: u8 = 1;
 const MIN_SERIALIZATION_VERSION: u8 = 1;
 
-impl<Signer: WriteableEcdsaChannelSigner> Writeable for ChannelMonitorImpl<Signer> {
+impl<Signer: EcdsaChannelSigner> Writeable for ChannelMonitorImpl<Signer> {
        fn write<W: Writer>(&self, writer: &mut W) -> Result<(), Error> {
                write_ver_prefix!(writer, SERIALIZATION_VERSION, MIN_SERIALIZATION_VERSION);
 
@@ -1208,11 +1208,11 @@ impl<'a, L: Deref> Logger for WithChannelMonitor<'a, L> where L::Target: Logger
 }
 
 impl<'a, L: Deref> WithChannelMonitor<'a, L> where L::Target: Logger {
-       pub(crate) fn from<S: WriteableEcdsaChannelSigner>(logger: &'a L, monitor: &ChannelMonitor<S>, payment_hash: Option<PaymentHash>) -> Self {
+       pub(crate) fn from<S: EcdsaChannelSigner>(logger: &'a L, monitor: &ChannelMonitor<S>, payment_hash: Option<PaymentHash>) -> Self {
                Self::from_impl(logger, &*monitor.inner.lock().unwrap(), payment_hash)
        }
 
-       pub(crate) fn from_impl<S: WriteableEcdsaChannelSigner>(logger: &'a L, monitor_impl: &ChannelMonitorImpl<S>, payment_hash: Option<PaymentHash>) -> Self {
+       pub(crate) fn from_impl<S: EcdsaChannelSigner>(logger: &'a L, monitor_impl: &ChannelMonitorImpl<S>, payment_hash: Option<PaymentHash>) -> Self {
                let peer_id = monitor_impl.counterparty_node_id;
                let channel_id = Some(monitor_impl.channel_id());
                WithChannelMonitor {
@@ -1221,7 +1221,7 @@ impl<'a, L: Deref> WithChannelMonitor<'a, L> where L::Target: Logger {
        }
 }
 
-impl<Signer: WriteableEcdsaChannelSigner> ChannelMonitor<Signer> {
+impl<Signer: EcdsaChannelSigner> ChannelMonitor<Signer> {
        /// For lockorder enforcement purposes, we need to have a single site which constructs the
        /// `inner` mutex, otherwise cases where we lock two monitors at the same time (eg in our
        /// PartialEq implementation) we may decide a lockorder violation has occurred.
@@ -1929,7 +1929,7 @@ impl<Signer: WriteableEcdsaChannelSigner> ChannelMonitor<Signer> {
        }
 }
 
-impl<Signer: WriteableEcdsaChannelSigner> ChannelMonitorImpl<Signer> {
+impl<Signer: EcdsaChannelSigner> ChannelMonitorImpl<Signer> {
        /// Helper for get_claimable_balances which does the work for an individual HTLC, generating up
        /// to one `Balance` for the HTLC.
        fn get_htlc_balance(&self, htlc: &HTLCOutputInCommitment, holder_commitment: bool,
@@ -2108,7 +2108,7 @@ impl<Signer: WriteableEcdsaChannelSigner> ChannelMonitorImpl<Signer> {
        }
 }
 
-impl<Signer: WriteableEcdsaChannelSigner> ChannelMonitor<Signer> {
+impl<Signer: EcdsaChannelSigner> ChannelMonitor<Signer> {
        /// Gets the balances in this channel which are either claimable by us if we were to
        /// force-close the channel now or which are claimable on-chain (possibly awaiting
        /// confirmation).
@@ -2520,7 +2520,7 @@ pub fn deliberately_bogus_accepted_htlc_witness() -> Vec<Vec<u8>> {
        vec![Vec::new(), Vec::new(), Vec::new(), Vec::new(), deliberately_bogus_accepted_htlc_witness_program().into()].into()
 }
 
-impl<Signer: WriteableEcdsaChannelSigner> ChannelMonitorImpl<Signer> {
+impl<Signer: EcdsaChannelSigner> ChannelMonitorImpl<Signer> {
        /// Inserts a revocation secret into this channel monitor. Prunes old preimages if neither
        /// needed by holder commitment transactions HTCLs nor by counterparty ones. Unless we haven't already seen
        /// counterparty commitment transaction's secret, they are de facto pruned (we can use revocation key).
@@ -4429,7 +4429,7 @@ impl<Signer: WriteableEcdsaChannelSigner> ChannelMonitorImpl<Signer> {
        }
 }
 
-impl<Signer: WriteableEcdsaChannelSigner, T: Deref, F: Deref, L: Deref> chain::Listen for (ChannelMonitor<Signer>, T, F, L)
+impl<Signer: EcdsaChannelSigner, T: Deref, F: Deref, L: Deref> chain::Listen for (ChannelMonitor<Signer>, T, F, L)
 where
        T::Target: BroadcasterInterface,
        F::Target: FeeEstimator,
@@ -4444,7 +4444,7 @@ where
        }
 }
 
-impl<Signer: WriteableEcdsaChannelSigner, M, T: Deref, F: Deref, L: Deref> chain::Confirm for (M, T, F, L)
+impl<Signer: EcdsaChannelSigner, M, T: Deref, F: Deref, L: Deref> chain::Confirm for (M, T, F, L)
 where
        M: Deref<Target = ChannelMonitor<Signer>>,
        T::Target: BroadcasterInterface,
index a8afc7a1acbda8310ad7fb2d6744bca9974465f9..8639e268dff842a68660218b3e57aaa392ea249f 100644 (file)
@@ -18,7 +18,7 @@ use bitcoin::secp256k1::PublicKey;
 
 use crate::chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, MonitorEvent};
 use crate::ln::types::ChannelId;
-use crate::sign::ecdsa::WriteableEcdsaChannelSigner;
+use crate::sign::ecdsa::EcdsaChannelSigner;
 use crate::chain::transaction::{OutPoint, TransactionData};
 use crate::impl_writeable_tlv_based;
 
@@ -257,7 +257,7 @@ pub enum ChannelMonitorUpdateStatus {
 /// application crashes.
 ///
 /// See method documentation and [`ChannelMonitorUpdateStatus`] for specific requirements.
-pub trait Watch<ChannelSigner: WriteableEcdsaChannelSigner> {
+pub trait Watch<ChannelSigner: EcdsaChannelSigner> {
        /// Watches a channel identified by `funding_txo` using `monitor`.
        ///
        /// Implementations are responsible for watching the chain for the funding transaction along
index 780375d68c89eca85477576246502401d59b6b8e..f66258c2c764d72d884b9670ab13ab511b2ce833 100644 (file)
@@ -23,7 +23,7 @@ use bitcoin::secp256k1::{Secp256k1, ecdsa::Signature};
 use bitcoin::secp256k1;
 
 use crate::chain::chaininterface::compute_feerate_sat_per_1000_weight;
-use crate::sign::{ChannelDerivationParameters, HTLCDescriptor, ChannelSigner, EntropySource, SignerProvider, ecdsa::WriteableEcdsaChannelSigner};
+use crate::sign::{ChannelDerivationParameters, HTLCDescriptor, ChannelSigner, EntropySource, SignerProvider, ecdsa::EcdsaChannelSigner};
 use crate::ln::msgs::DecodeError;
 use crate::ln::types::PaymentPreimage;
 use crate::ln::chan_utils::{self, ChannelTransactionParameters, HTLCOutputInCommitment, HolderCommitmentTransaction};
@@ -225,7 +225,7 @@ pub(crate) enum FeerateStrategy {
 /// OnchainTxHandler receives claiming requests, aggregates them if it's sound, broadcast and
 /// do RBF bumping if possible.
 #[derive(Clone)]
-pub struct OnchainTxHandler<ChannelSigner: WriteableEcdsaChannelSigner> {
+pub struct OnchainTxHandler<ChannelSigner: EcdsaChannelSigner> {
        channel_value_satoshis: u64,
        channel_keys_id: [u8; 32],
        destination_script: ScriptBuf,
@@ -281,7 +281,7 @@ pub struct OnchainTxHandler<ChannelSigner: WriteableEcdsaChannelSigner> {
        pub(super) secp_ctx: Secp256k1<secp256k1::All>,
 }
 
-impl<ChannelSigner: WriteableEcdsaChannelSigner> PartialEq for OnchainTxHandler<ChannelSigner> {
+impl<ChannelSigner: EcdsaChannelSigner> PartialEq for OnchainTxHandler<ChannelSigner> {
        fn eq(&self, other: &Self) -> bool {
                // `signer`, `secp_ctx`, and `pending_claim_events` are excluded on purpose.
                self.channel_value_satoshis == other.channel_value_satoshis &&
@@ -300,7 +300,7 @@ impl<ChannelSigner: WriteableEcdsaChannelSigner> PartialEq for OnchainTxHandler<
 const SERIALIZATION_VERSION: u8 = 1;
 const MIN_SERIALIZATION_VERSION: u8 = 1;
 
-impl<ChannelSigner: WriteableEcdsaChannelSigner> OnchainTxHandler<ChannelSigner> {
+impl<ChannelSigner: EcdsaChannelSigner> OnchainTxHandler<ChannelSigner> {
        pub(crate) fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
                write_ver_prefix!(writer, SERIALIZATION_VERSION, MIN_SERIALIZATION_VERSION);
 
@@ -440,7 +440,7 @@ impl<'a, 'b, ES: EntropySource, SP: SignerProvider> ReadableArgs<(&'a ES, &'b SP
        }
 }
 
-impl<ChannelSigner: WriteableEcdsaChannelSigner> OnchainTxHandler<ChannelSigner> {
+impl<ChannelSigner: EcdsaChannelSigner> OnchainTxHandler<ChannelSigner> {
        pub(crate) fn new(
                channel_value_satoshis: u64, channel_keys_id: [u8; 32], destination_script: ScriptBuf,
                signer: ChannelSigner, channel_parameters: ChannelTransactionParameters,
index 1bbcd6e04515081ce60a6bba4f1eeaa2c1f89849..3c800a3587a43d52dcfd431652546372fc31bcc2 100644 (file)
@@ -29,7 +29,7 @@ use crate::ln::channel_keys::{DelayedPaymentBasepoint, HtlcBasepoint};
 use crate::ln::msgs::DecodeError;
 use crate::chain::chaininterface::{FeeEstimator, ConfirmationTarget, MIN_RELAY_FEE_SAT_PER_1000_WEIGHT, compute_feerate_sat_per_1000_weight, FEERATE_FLOOR_SATS_PER_KW};
 use crate::chain::transaction::MaybeSignedTransaction;
-use crate::sign::ecdsa::WriteableEcdsaChannelSigner;
+use crate::sign::ecdsa::EcdsaChannelSigner;
 use crate::chain::onchaintx::{FeerateStrategy, ExternalHTLCClaim, OnchainTxHandler};
 use crate::util::logger::Logger;
 use crate::util::ser::{Readable, Writer, Writeable, RequiredWrapper};
@@ -580,7 +580,7 @@ impl PackageSolvingData {
                        witness: Witness::new(),
                }
        }
-       fn finalize_input<Signer: WriteableEcdsaChannelSigner>(&self, bumped_tx: &mut Transaction, i: usize, onchain_handler: &mut OnchainTxHandler<Signer>) -> bool {
+       fn finalize_input<Signer: EcdsaChannelSigner>(&self, bumped_tx: &mut Transaction, i: usize, onchain_handler: &mut OnchainTxHandler<Signer>) -> bool {
                match self {
                        PackageSolvingData::RevokedOutput(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);
@@ -635,7 +635,7 @@ impl PackageSolvingData {
                }
                true
        }
-       fn get_maybe_finalized_tx<Signer: WriteableEcdsaChannelSigner>(&self, outpoint: &BitcoinOutPoint, onchain_handler: &mut OnchainTxHandler<Signer>) -> Option<MaybeSignedTransaction> {
+       fn get_maybe_finalized_tx<Signer: EcdsaChannelSigner>(&self, outpoint: &BitcoinOutPoint, onchain_handler: &mut OnchainTxHandler<Signer>) -> Option<MaybeSignedTransaction> {
                match self {
                        PackageSolvingData::HolderHTLCOutput(ref outp) => {
                                debug_assert!(!outp.channel_type_features.supports_anchors_zero_fee_htlc_tx());
@@ -892,7 +892,7 @@ impl PackageTemplate {
                let output_weight = (8 + 1 + destination_script.len()) * WITNESS_SCALE_FACTOR;
                (inputs_weight + witnesses_weight + transaction_weight + output_weight) as u64
        }
-       pub(crate) fn construct_malleable_package_with_external_funding<Signer: WriteableEcdsaChannelSigner>(
+       pub(crate) fn construct_malleable_package_with_external_funding<Signer: EcdsaChannelSigner>(
                &self, onchain_handler: &mut OnchainTxHandler<Signer>,
        ) -> Option<Vec<ExternalHTLCClaim>> {
                debug_assert!(self.requires_external_funding());
@@ -910,7 +910,7 @@ impl PackageTemplate {
                }
                htlcs
        }
-       pub(crate) fn maybe_finalize_malleable_package<L: Logger, Signer: WriteableEcdsaChannelSigner>(
+       pub(crate) fn maybe_finalize_malleable_package<L: Logger, Signer: EcdsaChannelSigner>(
                &self, current_height: u32, onchain_handler: &mut OnchainTxHandler<Signer>, value: u64,
                destination_script: ScriptBuf, logger: &L
        ) -> Option<MaybeSignedTransaction> {
@@ -933,7 +933,7 @@ impl PackageTemplate {
                }
                Some(MaybeSignedTransaction(bumped_tx))
        }
-       pub(crate) fn maybe_finalize_untractable_package<L: Logger, Signer: WriteableEcdsaChannelSigner>(
+       pub(crate) fn maybe_finalize_untractable_package<L: Logger, Signer: EcdsaChannelSigner>(
                &self, onchain_handler: &mut OnchainTxHandler<Signer>, logger: &L,
        ) -> Option<MaybeSignedTransaction> {
                debug_assert!(!self.is_malleable());
index 9c24e00f13e8a3c907c522a64cf7d4ca5843fefc..836017faf318e21307ad230b2286563f13bf06c0 100644 (file)
@@ -28,7 +28,7 @@ use crate::prelude::*;
 use crate::sign::{
        ChannelDerivationParameters, HTLCDescriptor, SignerProvider, P2WPKH_WITNESS_WEIGHT
 };
-use crate::sign::ecdsa::{EcdsaChannelSigner, WriteableEcdsaChannelSigner};
+use crate::sign::ecdsa::EcdsaChannelSigner;
 use crate::sync::Mutex;
 use crate::util::logger::Logger;
 
@@ -92,7 +92,7 @@ impl AnchorDescriptor {
        }
 
        /// Derives the channel signer required to sign the anchor input.
-       pub fn derive_channel_signer<S: WriteableEcdsaChannelSigner, SP: Deref>(&self, signer_provider: &SP) -> S
+       pub fn derive_channel_signer<S: EcdsaChannelSigner, SP: Deref>(&self, signer_provider: &SP) -> S
        where
                SP::Target: SignerProvider<EcdsaSigner= S>
        {
index ff030514a2ec6e997b9cca38b9e3f339a9dc7138..5fbdb595b77101f8bf455e0761adc9de08437647 100644 (file)
@@ -37,7 +37,7 @@ use crate::chain::BestBlock;
 use crate::chain::chaininterface::{FeeEstimator, ConfirmationTarget, LowerBoundedFeeEstimator};
 use crate::chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateStep, LATENCY_GRACE_PERIOD_BLOCKS, CLOSED_CHANNEL_UPDATE_ID};
 use crate::chain::transaction::{OutPoint, TransactionData};
-use crate::sign::ecdsa::{EcdsaChannelSigner, WriteableEcdsaChannelSigner};
+use crate::sign::ecdsa::EcdsaChannelSigner;
 use crate::sign::{EntropySource, ChannelSigner, SignerProvider, NodeSigner, Recipient};
 use crate::events::ClosureReason;
 use crate::routing::gossip::NodeId;
@@ -3670,7 +3670,7 @@ impl FailHTLCMessageName for msgs::UpdateFailMalformedHTLC {
 
 impl<SP: Deref> Channel<SP> where
        SP::Target: SignerProvider,
-       <SP::Target as SignerProvider>::EcdsaSigner: WriteableEcdsaChannelSigner
+       <SP::Target as SignerProvider>::EcdsaSigner: EcdsaChannelSigner
 {
        fn check_remote_fee<F: Deref, L: Deref>(
                channel_type: &ChannelTypeFeatures, fee_estimator: &LowerBoundedFeeEstimator<F>,
index c867fdc35107dedb78a2f86611726c376ca2d2ea..d2b7166a5038ee9c493b6d3071bea32249db59d2 100644 (file)
@@ -68,7 +68,7 @@ use crate::offers::refund::{Refund, RefundBuilder};
 use crate::onion_message::messenger::{new_pending_onion_message, Destination, MessageRouter, PendingOnionMessage, Responder, ResponseInstruction};
 use crate::onion_message::offers::{OffersMessage, OffersMessageHandler};
 use crate::sign::{EntropySource, NodeSigner, Recipient, SignerProvider};
-use crate::sign::ecdsa::WriteableEcdsaChannelSigner;
+use crate::sign::ecdsa::EcdsaChannelSigner;
 use crate::util::config::{UserConfig, ChannelConfig, ChannelConfigUpdate};
 use crate::util::wakers::{Future, Notifier};
 use crate::util::scid_utils::fake_scid;
@@ -1061,8 +1061,8 @@ pub trait AChannelManager {
        type NodeSigner: NodeSigner + ?Sized;
        /// A type that may be dereferenced to [`Self::NodeSigner`].
        type NS: Deref<Target = Self::NodeSigner>;
-       /// A type implementing [`WriteableEcdsaChannelSigner`].
-       type Signer: WriteableEcdsaChannelSigner + Sized;
+       /// A type implementing [`EcdsaChannelSigner`].
+       type Signer: EcdsaChannelSigner + Sized;
        /// A type implementing [`SignerProvider`] for [`Self::Signer`].
        type SignerProvider: SignerProvider<EcdsaSigner= Self::Signer> + ?Sized;
        /// A type that may be dereferenced to [`Self::SignerProvider`].
index a0409e545059280b4e413fbf583702414aa5237d..df2b40332c30fa8d27c8a9f853b936f461ec5bfd 100644 (file)
@@ -11,7 +11,6 @@ use crate::ln::chan_utils::{
 };
 use crate::ln::msgs::UnsignedChannelAnnouncement;
 use crate::ln::types::PaymentPreimage;
-use crate::util::ser::Writeable;
 
 #[allow(unused_imports)]
 use crate::prelude::*;
@@ -211,12 +210,3 @@ pub trait EcdsaChannelSigner: ChannelSigner {
                &self, msg: &UnsignedChannelAnnouncement, secp_ctx: &Secp256k1<secp256k1::All>,
        ) -> Result<Signature, ()>;
 }
-
-/// A writeable signer.
-///
-/// There will always be two instances of a signer per channel, one occupied by the
-/// [`ChannelManager`] and another by the channel's [`ChannelMonitor`].
-///
-/// [`ChannelManager`]: crate::ln::channelmanager::ChannelManager
-/// [`ChannelMonitor`]: crate::chain::channelmonitor::ChannelMonitor
-pub trait WriteableEcdsaChannelSigner: EcdsaChannelSigner + Writeable {}
index 79edf0aed2ef1f508e63694484b5095a48966373..abc40607dfc056aae2a9b3ea2e2eee45e2debca0 100644 (file)
@@ -65,7 +65,7 @@ use crate::io::{self, Error};
 use crate::ln::features::ChannelTypeFeatures;
 use crate::ln::msgs::{DecodeError, MAX_VALUE_MSAT};
 use crate::prelude::*;
-use crate::sign::ecdsa::{EcdsaChannelSigner, WriteableEcdsaChannelSigner};
+use crate::sign::ecdsa::EcdsaChannelSigner;
 #[cfg(taproot)]
 use crate::sign::taproot::TaprootChannelSigner;
 use crate::util::atomic_counter::AtomicCounter;
@@ -709,9 +709,7 @@ impl HTLCDescriptor {
        }
 
        /// Derives the channel signer required to sign the HTLC input.
-       pub fn derive_channel_signer<S: WriteableEcdsaChannelSigner, SP: Deref>(
-               &self, signer_provider: &SP,
-       ) -> S
+       pub fn derive_channel_signer<S: EcdsaChannelSigner, SP: Deref>(&self, signer_provider: &SP) -> S
        where
                SP::Target: SignerProvider<EcdsaSigner = S>,
        {
@@ -942,8 +940,8 @@ pub type DynSignerProvider = dyn SignerProvider<EcdsaSigner = InMemorySigner>;
 
 /// A trait that can return signer instances for individual channels.
 pub trait SignerProvider {
-       /// A type which implements [`WriteableEcdsaChannelSigner`] which will be returned by [`Self::derive_channel_signer`].
-       type EcdsaSigner: WriteableEcdsaChannelSigner;
+       /// A type which implements [`EcdsaChannelSigner`] which will be returned by [`Self::derive_channel_signer`].
+       type EcdsaSigner: EcdsaChannelSigner;
        #[cfg(taproot)]
        /// A type which implements [`TaprootChannelSigner`]
        type TaprootSigner: TaprootChannelSigner;
@@ -970,7 +968,7 @@ pub trait SignerProvider {
 
        /// Reads a [`Signer`] for this [`SignerProvider`] from the given input stream.
        /// This is only called during deserialization of other objects which contain
-       /// [`WriteableEcdsaChannelSigner`]-implementing objects (i.e., [`ChannelMonitor`]s and [`ChannelManager`]s).
+       /// [`EcdsaChannelSigner`]-implementing objects (i.e., [`ChannelMonitor`]s and [`ChannelManager`]s).
        /// The bytes are exactly those which `<Self::Signer as Writeable>::write()` writes, and
        /// contain no versioning scheme. You may wish to include your own version prefix and ensure
        /// you've read all of the provided bytes to ensure no corruption occurred.
@@ -1014,7 +1012,7 @@ pub trait ChangeDestinationSource {
        fn get_change_destination_script(&self) -> Result<ScriptBuf, ()>;
 }
 
-/// A simple implementation of [`WriteableEcdsaChannelSigner`] that just keeps the private keys in memory.
+/// A simple implementation of [`EcdsaChannelSigner`] that just keeps the private keys in memory.
 ///
 /// This implementation performs no policy checks and is insufficient by itself as
 /// a secure external signer.
@@ -1742,8 +1740,6 @@ const SERIALIZATION_VERSION: u8 = 1;
 
 const MIN_SERIALIZATION_VERSION: u8 = 1;
 
-impl WriteableEcdsaChannelSigner for InMemorySigner {}
-
 impl Writeable for InMemorySigner {
        fn write<W: Writer>(&self, writer: &mut W) -> Result<(), Error> {
                write_ver_prefix!(writer, SERIALIZATION_VERSION, MIN_SERIALIZATION_VERSION);
@@ -1939,7 +1935,7 @@ impl KeysManager {
                self.node_secret
        }
 
-       /// Derive an old [`WriteableEcdsaChannelSigner`] containing per-channel secrets based on a key derivation parameters.
+       /// Derive an old [`EcdsaChannelSigner`] containing per-channel secrets based on a key derivation parameters.
        pub fn derive_channel_keys(
                &self, channel_value_satoshis: u64, params: &[u8; 32],
        ) -> InMemorySigner {
index 46f82d2c113bce38daae9f56a56e6036ddf13be7..d03474b292ade70f28993eee63c8521e42b2f443 100644 (file)
@@ -21,7 +21,7 @@ use crate::prelude::*;
 use crate::chain;
 use crate::chain::chaininterface::{BroadcasterInterface, FeeEstimator};
 use crate::chain::chainmonitor::Persist;
-use crate::sign::{EntropySource, ecdsa::WriteableEcdsaChannelSigner, SignerProvider};
+use crate::sign::{EntropySource, ecdsa::EcdsaChannelSigner, SignerProvider};
 use crate::chain::transaction::OutPoint;
 use crate::chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, CLOSED_CHANNEL_UPDATE_ID};
 use crate::ln::channelmanager::AChannelManager;
@@ -202,7 +202,7 @@ where
        }
 }
 
-impl<ChannelSigner: WriteableEcdsaChannelSigner, K: KVStore + ?Sized> Persist<ChannelSigner> for K {
+impl<ChannelSigner: EcdsaChannelSigner, K: KVStore + ?Sized> Persist<ChannelSigner> for K {
        // TODO: We really need a way for the persister to inform the user that its time to crash/shut
        // down once these start returning failure.
        // Then we should return InProgress rather than UnrecoverableError, implying we should probably
@@ -637,7 +637,7 @@ where
        }
 }
 
-impl<ChannelSigner: WriteableEcdsaChannelSigner, K: Deref, L: Deref, ES: Deref, SP: Deref>
+impl<ChannelSigner: EcdsaChannelSigner, K: Deref, L: Deref, ES: Deref, SP: Deref>
        Persist<ChannelSigner> for MonitorUpdatingPersister<K, L, ES, SP>
 where
        K::Target: KVStore,
@@ -1247,7 +1247,7 @@ mod tests {
                        .is_err());
        }
 
-       fn persist_fn<P: Deref, ChannelSigner: WriteableEcdsaChannelSigner>(_persist: P) -> bool where P::Target: Persist<ChannelSigner> {
+       fn persist_fn<P: Deref, ChannelSigner: EcdsaChannelSigner>(_persist: P) -> bool where P::Target: Persist<ChannelSigner> {
                true
        }
 
index 64320bbbaf55eb08f295296abc3109c5b23697ab..0ad1d95bd0671bf3b7dcceb358d166298283c037 100644 (file)
@@ -13,7 +13,7 @@ use crate::ln::channel_keys::{HtlcKey};
 use crate::ln::msgs;
 use crate::ln::types::PaymentPreimage;
 use crate::sign::{InMemorySigner, ChannelSigner};
-use crate::sign::ecdsa::{EcdsaChannelSigner, WriteableEcdsaChannelSigner};
+use crate::sign::ecdsa::EcdsaChannelSigner;
 
 #[allow(unused_imports)]
 use crate::prelude::*;
@@ -297,8 +297,6 @@ impl EcdsaChannelSigner for TestChannelSigner {
        }
 }
 
-impl WriteableEcdsaChannelSigner for TestChannelSigner {}
-
 #[cfg(taproot)]
 impl TaprootChannelSigner for TestChannelSigner {
        fn generate_local_nonce_pair(&self, commitment_number: u64, secp_ctx: &Secp256k1<All>) -> PublicNonce {
index d4f4b10d1db29f0d0fdd8e677e4ff1307e6fac18..99b836665436c1876f13577993b11e440ee6c555 100644 (file)
@@ -450,7 +450,7 @@ impl WatchtowerPersister {
 }
 
 #[cfg(test)]
-impl<Signer: sign::ecdsa::WriteableEcdsaChannelSigner> chainmonitor::Persist<Signer> for WatchtowerPersister {
+impl<Signer: sign::ecdsa::EcdsaChannelSigner> chainmonitor::Persist<Signer> for WatchtowerPersister {
        fn persist_new_channel(&self, funding_txo: OutPoint,
                data: &channelmonitor::ChannelMonitor<Signer>
        ) -> chain::ChannelMonitorUpdateStatus {
@@ -532,7 +532,7 @@ impl TestPersister {
                self.update_rets.lock().unwrap().push_back(next_ret);
        }
 }
-impl<Signer: sign::ecdsa::WriteableEcdsaChannelSigner> chainmonitor::Persist<Signer> for TestPersister {
+impl<Signer: sign::ecdsa::EcdsaChannelSigner> chainmonitor::Persist<Signer> for TestPersister {
        fn persist_new_channel(&self, _funding_txo: OutPoint, _data: &channelmonitor::ChannelMonitor<Signer>) -> chain::ChannelMonitorUpdateStatus {
                if let Some(update_ret) = self.update_rets.lock().unwrap().pop_front() {
                        return update_ret