Rename a's keys as local's keys and b's keys as remote's keys

fuzz/src/full_stack.rs

@@ -903,6 +903,6 @@ mod tests {
 		assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling UpdateHTLCs event in peer_handler for node 030200000000000000000000000000000000000000000000000000000000000000 with 1 adds, 0 fulfills, 0 fails for channel 3900000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&3)); // 7
 		assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling UpdateHTLCs event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000000 with 0 adds, 1 fulfills, 0 fails for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&1)); // 8
 		assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling UpdateHTLCs event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000000 with 0 adds, 0 fulfills, 1 fails for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&2)); // 9
-		assert_eq!(log_entries.get(&("lightning::ln::channelmonitor".to_string(), "Input spending remote commitment tx (00000000000000000000000000000000000000000000000000000000000000a1:0) in 0000000000000000000000000000000000000000000000000000000000000018 resolves outbound HTLC with payment hash ff00000000000000000000000000000000000000000000000000000000000000 with timeout".to_string())), Some(&1)); // 10
+		assert_eq!(log_entries.get(&("lightning::ln::channelmonitor".to_string(), "Input spending counterparty commitment tx (00000000000000000000000000000000000000000000000000000000000000a1:0) in 0000000000000000000000000000000000000000000000000000000000000018 resolves outbound HTLC with payment hash ff00000000000000000000000000000000000000000000000000000000000000 with timeout".to_string())), Some(&1)); // 10
 	}
 }

lightning-c-bindings/src/ln/channelmonitor.rs

@@ -542,8 +542,8 @@ pub extern "C" fn ChannelMonitor_get_and_clear_pending_events(this_arg: &mut Cha
 /// In any-case, choice is up to the user.
 #[must_use]
 #[no_mangle]
-pub extern "C" fn ChannelMonitor_get_latest_local_commitment_txn(this_arg: &mut ChannelMonitor, logger: &crate::util::logger::Logger) -> crate::c_types::derived::CVec_TransactionZ {
-	let mut ret = unsafe { &mut (*(this_arg.inner as *mut nativeChannelMonitor)) }.get_latest_local_commitment_txn(logger);
+pub extern "C" fn ChannelMonitor_get_latest_holder_commitment_txn(this_arg: &mut ChannelMonitor, logger: &crate::util::logger::Logger) -> crate::c_types::derived::CVec_TransactionZ {
+	let mut ret = unsafe { &mut (*(this_arg.inner as *mut nativeChannelMonitor)) }.get_latest_holder_commitment_txn(logger);
 	let mut local_ret = Vec::new(); for item in ret.drain(..) { local_ret.push( { let mut local_ret_0 = ::bitcoin::consensus::encode::serialize(&item); local_ret_0.into() }); };
 	local_ret.into()
 }

lightning/src/ln/functional_test_utils.rs

@@ -272,7 +272,7 @@ macro_rules! get_local_commitment_txn {
 			let mut commitment_txn = None;
 			for (funding_txo, monitor) in monitors.iter_mut() {
 				if funding_txo.to_channel_id() == $channel_id {
-					commitment_txn = Some(monitor.unsafe_get_latest_local_commitment_txn(&$node.logger));
+					commitment_txn = Some(monitor.unsafe_get_latest_holder_commitment_txn(&$node.logger));
 					break;
 				}
 			}
@@ -1130,7 +1130,7 @@ pub const OFFERED_HTLC_SCRIPT_WEIGHT: usize = 133;
 pub enum HTLCType { NONE, TIMEOUT, SUCCESS }
 /// Tests that the given node has broadcast transactions for the given Channel
 ///
-/// First checks that the latest local commitment tx has been broadcast, unless an explicit
+/// First checks that the latest holder commitment tx has been broadcast, unless an explicit
 /// commitment_tx is provided, which may be used to test that a remote commitment tx was
 /// broadcast and the revoked outputs were claimed.
 ///
@@ -1355,7 +1355,7 @@ pub fn reconnect_nodes<'a, 'b, 'c>(node_a: &Node<'a, 'b, 'c>, node_b: &Node<'a,
 	}
 	if send_funding_locked.0 || send_funding_locked.1 {
 		// If we expect any funding_locked's, both sides better have set
-		// next_local_commitment_number to 1
+		// next_holder_commitment_number to 1
 		for reestablish in reestablish_1.iter() {
 			assert_eq!(reestablish.next_local_commitment_number, 1);
 		}

lightning/src/util/enforcing_trait_impls.rs

@@ -7,7 +7,7 @@
 // You may not use this file except in accordance with one or both of these
 // licenses.
 
-use ln::chan_utils::{HTLCOutputInCommitment, TxCreationKeys, ChannelPublicKeys, LocalCommitmentTransaction, PreCalculatedTxCreationKeys};
+use ln::chan_utils::{HTLCOutputInCommitment, TxCreationKeys, ChannelPublicKeys, HolderCommitmentTransaction, PreCalculatedTxCreationKeys};
 use ln::{chan_utils, msgs};
 use chain::keysinterface::{ChannelKeys, InMemoryChannelKeys};
 
@@ -44,7 +44,7 @@ impl EnforcingChannelKeys {
 impl EnforcingChannelKeys {
 	fn check_keys<T: secp256k1::Signing + secp256k1::Verification>(&self, secp_ctx: &Secp256k1<T>,
 	                                                               keys: &TxCreationKeys) {
-		let remote_points = self.inner.remote_pubkeys();
+		let remote_points = self.inner.counterparty_pubkeys();
 
 		let keys_expected = TxCreationKeys::derive_new(secp_ctx,
 		                                               &keys.per_commitment_point,
@@ -69,7 +69,7 @@ impl ChannelKeys for EnforcingChannelKeys {
 	fn pubkeys(&self) -> &ChannelPublicKeys { self.inner.pubkeys() }
 	fn key_derivation_params(&self) -> (u64, u64) { self.inner.key_derivation_params() }
 
-	fn sign_remote_commitment<T: secp256k1::Signing + secp256k1::Verification>(&self, feerate_per_kw: u32, commitment_tx: &Transaction, pre_keys: &PreCalculatedTxCreationKeys, htlcs: &[&HTLCOutputInCommitment], secp_ctx: &Secp256k1<T>) -> Result<(Signature, Vec<Signature>), ()> {
+	fn sign_counterparty_commitment<T: secp256k1::Signing + secp256k1::Verification>(&self, feerate_per_kw: u32, commitment_tx: &Transaction, pre_keys: &PreCalculatedTxCreationKeys, htlcs: &[&HTLCOutputInCommitment], secp_ctx: &Secp256k1<T>) -> Result<(Signature, Vec<Signature>), ()> {
 		if commitment_tx.input.len() != 1 { panic!("lightning commitment transactions have a single input"); }
 		self.check_keys(secp_ctx, pre_keys.trust_key_derivation());
 		let obscured_commitment_transaction_number = (commitment_tx.lock_time & 0xffffff) as u64 | ((commitment_tx.input[0].sequence as u64 & 0xffffff) << 3*8);
@@ -84,44 +84,44 @@ impl ChannelKeys for EnforcingChannelKeys {
 			commitment_data.1 = cmp::max(commitment_number, commitment_data.1)
 		}
 
-		Ok(self.inner.sign_remote_commitment(feerate_per_kw, commitment_tx, pre_keys, htlcs, secp_ctx).unwrap())
+		Ok(self.inner.sign_counterparty_commitment(feerate_per_kw, commitment_tx, pre_keys, htlcs, secp_ctx).unwrap())
 	}
 
-	fn sign_local_commitment<T: secp256k1::Signing + secp256k1::Verification>(&self, local_commitment_tx: &LocalCommitmentTransaction, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {
+	fn sign_holder_commitment<T: secp256k1::Signing + secp256k1::Verification>(&self, holder_commitment_tx: &HolderCommitmentTransaction, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {
 		// TODO: enforce the ChannelKeys contract - error if this commitment was already revoked
 		// TODO: need the commitment number
-		Ok(self.inner.sign_local_commitment(local_commitment_tx, secp_ctx).unwrap())
+		Ok(self.inner.sign_holder_commitment(holder_commitment_tx, secp_ctx).unwrap())
 	}
 
 	#[cfg(any(test,feature = "unsafe_revoked_tx_signing"))]
-	fn unsafe_sign_local_commitment<T: secp256k1::Signing + secp256k1::Verification>(&self, local_commitment_tx: &LocalCommitmentTransaction, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {
-		Ok(self.inner.unsafe_sign_local_commitment(local_commitment_tx, secp_ctx).unwrap())
+	fn unsafe_sign_holder_commitment<T: secp256k1::Signing + secp256k1::Verification>(&self, holder_commitment_tx: &HolderCommitmentTransaction, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {
+		Ok(self.inner.unsafe_sign_holder_commitment(holder_commitment_tx, secp_ctx).unwrap())
 	}
 
-	fn sign_local_commitment_htlc_transactions<T: secp256k1::Signing + secp256k1::Verification>(&self, local_commitment_tx: &LocalCommitmentTransaction, secp_ctx: &Secp256k1<T>) -> Result<Vec<Option<Signature>>, ()> {
-		let commitment_txid = local_commitment_tx.txid();
-		let local_csv = self.inner.remote_to_self_delay();
+	fn sign_holder_commitment_htlc_transactions<T: secp256k1::Signing + secp256k1::Verification>(&self, holder_commitment_tx: &HolderCommitmentTransaction, secp_ctx: &Secp256k1<T>) -> Result<Vec<Option<Signature>>, ()> {
+		let commitment_txid = holder_commitment_tx.txid();
+		let holder_csv = self.inner.counterparty_selected_contest_delay();
 
-		for this_htlc in local_commitment_tx.per_htlc.iter() {
+		for this_htlc in holder_commitment_tx.per_htlc.iter() {
 			if this_htlc.0.transaction_output_index.is_some() {
-				let htlc_tx = chan_utils::build_htlc_transaction(&commitment_txid, local_commitment_tx.feerate_per_kw, local_csv, &this_htlc.0, &local_commitment_tx.local_keys.a_delayed_payment_key, &local_commitment_tx.local_keys.revocation_key);
+				let htlc_tx = chan_utils::build_htlc_transaction(&commitment_txid, holder_commitment_tx.feerate_per_kw, holder_csv, &this_htlc.0, &holder_commitment_tx.keys.broadcaster_delayed_payment_key, &holder_commitment_tx.keys.revocation_key);
 
-				let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&this_htlc.0, &local_commitment_tx.local_keys);
+				let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&this_htlc.0, &holder_commitment_tx.keys);
 
 				let sighash = hash_to_message!(&bip143::SigHashCache::new(&htlc_tx).signature_hash(0, &htlc_redeemscript, this_htlc.0.amount_msat / 1000, SigHashType::All)[..]);
-				secp_ctx.verify(&sighash, this_htlc.1.as_ref().unwrap(), &local_commitment_tx.local_keys.b_htlc_key).unwrap();
+				secp_ctx.verify(&sighash, this_htlc.1.as_ref().unwrap(), &holder_commitment_tx.keys.countersignatory_htlc_key).unwrap();
 			}
 		}
 
-		Ok(self.inner.sign_local_commitment_htlc_transactions(local_commitment_tx, secp_ctx).unwrap())
+		Ok(self.inner.sign_holder_commitment_htlc_transactions(holder_commitment_tx, secp_ctx).unwrap())
 	}
 
 	fn sign_justice_transaction<T: secp256k1::Signing + secp256k1::Verification>(&self, justice_tx: &Transaction, input: usize, amount: u64, per_commitment_key: &SecretKey, htlc: &Option<HTLCOutputInCommitment>, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {
 		Ok(self.inner.sign_justice_transaction(justice_tx, input, amount, per_commitment_key, htlc, secp_ctx).unwrap())
 	}
 
-	fn sign_remote_htlc_transaction<T: secp256k1::Signing + secp256k1::Verification>(&self, htlc_tx: &Transaction, input: usize, amount: u64, per_commitment_point: &PublicKey, htlc: &HTLCOutputInCommitment, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {
-		Ok(self.inner.sign_remote_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc, secp_ctx).unwrap())
+	fn sign_counterparty_htlc_transaction<T: secp256k1::Signing + secp256k1::Verification>(&self, htlc_tx: &Transaction, input: usize, amount: u64, per_commitment_point: &PublicKey, htlc: &HTLCOutputInCommitment, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {
+		Ok(self.inner.sign_counterparty_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc, secp_ctx).unwrap())
 	}
 
 	fn sign_closing_transaction<T: secp256k1::Signing>(&self, closing_tx: &Transaction, secp_ctx: &Secp256k1<T>) -> Result<Signature, ()> {
@@ -132,8 +132,8 @@ impl ChannelKeys for EnforcingChannelKeys {
 		self.inner.sign_channel_announcement(msg, secp_ctx)
 	}
 
-	fn on_accept(&mut self, channel_pubkeys: &ChannelPublicKeys, remote_to_self_delay: u16, local_to_self_delay: u16) {
-		self.inner.on_accept(channel_pubkeys, remote_to_self_delay, local_to_self_delay)
+	fn on_accept(&mut self, channel_pubkeys: &ChannelPublicKeys, counterparty_selected_delay: u16, holder_selected_delay: u16) {
+		self.inner.on_accept(channel_pubkeys, counterparty_selected_delay, holder_selected_delay)
 	}
 }
 

lightning/src/util/macro_logger.rs

@@ -141,7 +141,7 @@ impl<'a> std::fmt::Display for DebugSpendable<'a> {
 			&SpendableOutputDescriptor::DynamicOutputP2WSH { ref outpoint, .. } => {
 				write!(f, "DynamicOutputP2WSH {}:{} marked for spending", outpoint.txid, outpoint.index)?;
 			}
-			&SpendableOutputDescriptor::StaticOutputRemotePayment { ref outpoint, .. } => {
+			&SpendableOutputDescriptor::StaticOutputCounterpartyPayment { ref outpoint, .. } => {
 				write!(f, "DynamicOutputP2WPKH {}:{} marked for spending", outpoint.txid, outpoint.index)?;
 			}
 		}