X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fln%2Fchannelmonitor.rs;h=3c86d7564d0111d8b0f84d2cfad6e7496bb66bd5;hb=3ea13194e8ad3ea3493ca4ba63cd215eee105feb;hp=e88dd33395c7ca58f0e1c08c2b66d42cfe458960;hpb=b9db2ec687b8c570ad9b8e938049c5b330433b68;p=rust-lightning

diff --git a/lightning/src/ln/channelmonitor.rs b/lightning/src/ln/channelmonitor.rs
index e88dd333..3c86d756 100644
--- a/lightning/src/ln/channelmonitor.rs
+++ b/lightning/src/ln/channelmonitor.rs
@@ -290,16 +290,9 @@ impl<Key : Send + cmp::Eq + hash::Hash + 'static, ChanSigner: ChannelKeys, T: De
 			hash_map::Entry::Occupied(_) => return Err(MonitorUpdateError("Channel monitor for given key is already present")),
 			hash_map::Entry::Vacant(e) => e,
 		};
-		match monitor.funding_info {
-			None => {
-				return Err(MonitorUpdateError("Try to update a useless monitor without funding_txo !"));
-			},
-			Some((ref outpoint, ref script)) => {
-				log_trace!(self, "Got new Channel Monitor for channel {}", log_bytes!(outpoint.to_channel_id()[..]));
-				self.chain_monitor.install_watch_tx(&outpoint.txid, script);
-				self.chain_monitor.install_watch_outpoint((outpoint.txid, outpoint.index as u32), script);
-			},
-		}
+		log_trace!(self, "Got new Channel Monitor for channel {}", log_bytes!(monitor.funding_info.0.to_channel_id()[..]));
+		self.chain_monitor.install_watch_tx(&monitor.funding_info.0.txid, &monitor.funding_info.1);
+		self.chain_monitor.install_watch_outpoint((monitor.funding_info.0.txid, monitor.funding_info.0.index as u32), &monitor.funding_info.1);
 		for (txid, outputs) in monitor.get_outputs_to_watch().iter() {
 			for (idx, script) in outputs.iter().enumerate() {
 				self.chain_monitor.install_watch_outpoint((*txid, idx as u32), script);
@@ -560,12 +553,7 @@ const MIN_SERIALIZATION_VERSION: u8 = 1;
 #[derive(Clone)]
 pub(super) enum ChannelMonitorUpdateStep {
 	LatestLocalCommitmentTXInfo {
-		// TODO: We really need to not be generating a fully-signed transaction in Channel and
-		// passing it here, we need to hold off so that the ChanSigner can enforce a
-		// only-sign-local-state-for-broadcast once invariant:
 		commitment_tx: LocalCommitmentTransaction,
-		local_keys: chan_utils::TxCreationKeys,
-		feerate_per_kw: u64,
 		htlc_outputs: Vec<(HTLCOutputInCommitment, Option<Signature>, Option<HTLCSource>)>,
 	},
 	LatestRemoteCommitmentTXInfo {
@@ -598,11 +586,9 @@ pub(super) enum ChannelMonitorUpdateStep {
 impl Writeable for ChannelMonitorUpdateStep {
 	fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
 		match self {
-			&ChannelMonitorUpdateStep::LatestLocalCommitmentTXInfo { ref commitment_tx, ref local_keys, ref feerate_per_kw, ref htlc_outputs } => {
+			&ChannelMonitorUpdateStep::LatestLocalCommitmentTXInfo { ref commitment_tx, ref htlc_outputs } => {
 				0u8.write(w)?;
 				commitment_tx.write(w)?;
-				local_keys.write(w)?;
-				feerate_per_kw.write(w)?;
 				(htlc_outputs.len() as u64).write(w)?;
 				for &(ref output, ref signature, ref source) in htlc_outputs.iter() {
 					output.write(w)?;
@@ -648,8 +634,6 @@ impl Readable for ChannelMonitorUpdateStep {
 			0u8 => {
 				Ok(ChannelMonitorUpdateStep::LatestLocalCommitmentTXInfo {
 					commitment_tx: Readable::read(r)?,
-					local_keys: Readable::read(r)?,
-					feerate_per_kw: Readable::read(r)?,
 					htlc_outputs: {
 						let len: u64 = Readable::read(r)?;
 						let mut res = Vec::new();
@@ -721,19 +705,19 @@ pub struct ChannelMonitor<ChanSigner: ChannelKeys> {
 	shutdown_script: Script,
 
 	keys: ChanSigner,
-	funding_info: Option<(OutPoint, Script)>,
+	funding_info: (OutPoint, Script),
 	current_remote_commitment_txid: Option<Sha256dHash>,
 	prev_remote_commitment_txid: Option<Sha256dHash>,
 
-	their_htlc_base_key: Option<PublicKey>,
-	their_delayed_payment_base_key: Option<PublicKey>,
-	funding_redeemscript: Option<Script>,
-	channel_value_satoshis: Option<u64>,
+	their_htlc_base_key: PublicKey,
+	their_delayed_payment_base_key: PublicKey,
+	funding_redeemscript: Script,
+	channel_value_satoshis: u64,
 	// first is the idx of the first of the two revocation points
 	their_cur_revocation_points: Option<(u64, PublicKey, Option<PublicKey>)>,
 
 	our_to_self_delay: u16,
-	their_to_self_delay: Option<u16>,
+	their_to_self_delay: u16,
 
 	commitment_secrets: CounterpartyCommitmentSecrets,
 	remote_claimable_outpoints: HashMap<Sha256dHash, Vec<(HTLCOutputInCommitment, Option<Box<HTLCSource>>)>>,
@@ -840,8 +824,14 @@ impl<ChanSigner: ChannelKeys> PartialEq for ChannelMonitor<ChanSigner> {
 }
 
 impl<ChanSigner: ChannelKeys + Writeable> ChannelMonitor<ChanSigner> {
-	/// Serializes into a vec, with various modes for the exposed pub fns
-	fn write<W: Writer>(&self, writer: &mut W, for_local_storage: bool) -> Result<(), ::std::io::Error> {
+	/// Writes this monitor into the given writer, suitable for writing to disk.
+	///
+	/// Note that the deserializer is only implemented for (Sha256dHash, ChannelMonitor), which
+	/// tells you the last block hash which was block_connect()ed. You MUST rescan any blocks along
+	/// 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 fn write_for_disk<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
 		//TODO: We still write out all the serialization here manually instead of using the fancy
 		//serialization framework we have, we should migrate things over to it.
 		writer.write_all(&[SERIALIZATION_VERSION; 1])?;
@@ -872,23 +862,16 @@ impl<ChanSigner: ChannelKeys + Writeable> ChannelMonitor<ChanSigner> {
 		self.shutdown_script.write(writer)?;
 
 		self.keys.write(writer)?;
-		match self.funding_info  {
-			Some((ref outpoint, ref script)) => {
-				writer.write_all(&outpoint.txid[..])?;
-				writer.write_all(&byte_utils::be16_to_array(outpoint.index))?;
-				script.write(writer)?;
-			},
-			None => {
-				debug_assert!(false, "Try to serialize a useless Local monitor !");
-			},
-		}
+		writer.write_all(&self.funding_info.0.txid[..])?;
+		writer.write_all(&byte_utils::be16_to_array(self.funding_info.0.index))?;
+		self.funding_info.1.write(writer)?;
 		self.current_remote_commitment_txid.write(writer)?;
 		self.prev_remote_commitment_txid.write(writer)?;
 
-		writer.write_all(&self.their_htlc_base_key.as_ref().unwrap().serialize())?;
-		writer.write_all(&self.their_delayed_payment_base_key.as_ref().unwrap().serialize())?;
-		self.funding_redeemscript.as_ref().unwrap().write(writer)?;
-		self.channel_value_satoshis.unwrap().write(writer)?;
+		writer.write_all(&self.their_htlc_base_key.serialize())?;
+		writer.write_all(&self.their_delayed_payment_base_key.serialize())?;
+		self.funding_redeemscript.write(writer)?;
+		self.channel_value_satoshis.write(writer)?;
 
 		match self.their_cur_revocation_points {
 			Some((idx, pubkey, second_option)) => {
@@ -909,7 +892,7 @@ impl<ChanSigner: ChannelKeys + Writeable> ChannelMonitor<ChanSigner> {
 		}
 
 		writer.write_all(&byte_utils::be16_to_array(self.our_to_self_delay))?;
-		writer.write_all(&byte_utils::be16_to_array(self.their_to_self_delay.unwrap()))?;
+		writer.write_all(&byte_utils::be16_to_array(self.their_to_self_delay))?;
 
 		self.commitment_secrets.write(writer)?;
 
@@ -943,14 +926,10 @@ impl<ChanSigner: ChannelKeys + Writeable> ChannelMonitor<ChanSigner> {
 			}
 		}
 
-		if for_local_storage {
-			writer.write_all(&byte_utils::be64_to_array(self.remote_hash_commitment_number.len() as u64))?;
-			for (ref payment_hash, commitment_number) in self.remote_hash_commitment_number.iter() {
-				writer.write_all(&payment_hash.0[..])?;
-				writer.write_all(&byte_utils::be48_to_array(*commitment_number))?;
-			}
-		} else {
-			writer.write_all(&byte_utils::be64_to_array(0))?;
+		writer.write_all(&byte_utils::be64_to_array(self.remote_hash_commitment_number.len() as u64))?;
+		for (ref payment_hash, commitment_number) in self.remote_hash_commitment_number.iter() {
+			writer.write_all(&payment_hash.0[..])?;
+			writer.write_all(&byte_utils::be48_to_array(*commitment_number))?;
 		}
 
 		macro_rules! serialize_local_tx {
@@ -991,17 +970,8 @@ impl<ChanSigner: ChannelKeys + Writeable> ChannelMonitor<ChanSigner> {
 			writer.write_all(&[0; 1])?;
 		}
 
-		if for_local_storage {
-			writer.write_all(&byte_utils::be48_to_array(self.current_remote_commitment_number))?;
-		} else {
-			writer.write_all(&byte_utils::be48_to_array(0))?;
-		}
-
-		if for_local_storage {
-			writer.write_all(&byte_utils::be48_to_array(self.current_local_commitment_number))?;
-		} else {
-			writer.write_all(&byte_utils::be48_to_array(0))?;
-		}
+		writer.write_all(&byte_utils::be48_to_array(self.current_remote_commitment_number))?;
+		writer.write_all(&byte_utils::be48_to_array(self.current_local_commitment_number))?;
 
 		writer.write_all(&byte_utils::be64_to_array(self.payment_preimages.len() as u64))?;
 		for payment_preimage in self.payment_preimages.values() {
@@ -1053,28 +1023,6 @@ impl<ChanSigner: ChannelKeys + Writeable> ChannelMonitor<ChanSigner> {
 
 		Ok(())
 	}
-
-	/// Writes this monitor into the given writer, suitable for writing to disk.
-	///
-	/// Note that the deserializer is only implemented for (Sha256dHash, ChannelMonitor), which
-	/// tells you the last block hash which was block_connect()ed. You MUST rescan any blocks along
-	/// the "reorg path" (ie not just starting at the same height but starting at the highest
-	/// common block that appears on your best chain as well as on the chain which contains the
-	/// last block hash returned) upon deserializing the object!
-	pub fn write_for_disk<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
-		self.write(writer, true)
-	}
-
-	/// Encodes this monitor into the given writer, suitable for sending to a remote watchtower
-	///
-	/// Note that the deserializer is only implemented for (Sha256dHash, ChannelMonitor), which
-	/// tells you the last block hash which was block_connect()ed. You MUST rescan any blocks along
-	/// the "reorg path" (ie not just starting at the same height but starting at the highest
-	/// common block that appears on your best chain as well as on the chain which contains the
-	/// last block hash returned) upon deserializing the object!
-	pub fn write_for_watchtower<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
-		self.write(writer, false)
-	}
 }
 
 impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
@@ -1099,18 +1047,18 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 			shutdown_script,
 
 			keys: keys.clone(),
-			funding_info: Some(funding_info),
+			funding_info,
 			current_remote_commitment_txid: None,
 			prev_remote_commitment_txid: None,
 
-			their_htlc_base_key: Some(their_htlc_base_key.clone()),
-			their_delayed_payment_base_key: Some(their_delayed_payment_base_key.clone()),
-			funding_redeemscript: Some(funding_redeemscript.clone()),
-			channel_value_satoshis: Some(channel_value_satoshis),
+			their_htlc_base_key: their_htlc_base_key.clone(),
+			their_delayed_payment_base_key: their_delayed_payment_base_key.clone(),
+			funding_redeemscript: funding_redeemscript.clone(),
+			channel_value_satoshis: channel_value_satoshis,
 			their_cur_revocation_points: None,
 
-			our_to_self_delay: our_to_self_delay,
-			their_to_self_delay: Some(their_to_self_delay),
+			our_to_self_delay,
+			their_to_self_delay,
 
 			commitment_secrets: CounterpartyCommitmentSecrets::new(),
 			remote_claimable_outpoints: HashMap::new(),
@@ -1129,7 +1077,7 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 			onchain_events_waiting_threshold_conf: HashMap::new(),
 			outputs_to_watch: HashMap::new(),
 
-			onchain_tx_handler: OnchainTxHandler::new(destination_script.clone(), keys, funding_redeemscript, their_to_self_delay, logger.clone()),
+			onchain_tx_handler: OnchainTxHandler::new(destination_script.clone(), keys, their_to_self_delay, logger.clone()),
 
 			lockdown_from_offchain: false,
 
@@ -1247,20 +1195,20 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 	/// is important that any clones of this channel monitor (including remote clones) by kept
 	/// up-to-date as our local commitment transaction is updated.
 	/// Panics if set_their_to_self_delay has never been called.
-	pub(super) fn provide_latest_local_commitment_tx_info(&mut self, mut commitment_tx: LocalCommitmentTransaction, local_keys: chan_utils::TxCreationKeys, feerate_per_kw: u64, htlc_outputs: Vec<(HTLCOutputInCommitment, Option<Signature>, Option<HTLCSource>)>) -> Result<(), MonitorUpdateError> {
-		if self.their_to_self_delay.is_none() {
-			return Err(MonitorUpdateError("Got a local commitment tx info update before we'd set basic information about the channel"));
-		}
+	pub(super) fn provide_latest_local_commitment_tx_info(&mut self, commitment_tx: LocalCommitmentTransaction, htlc_outputs: Vec<(HTLCOutputInCommitment, Option<Signature>, Option<HTLCSource>)>) -> Result<(), MonitorUpdateError> {
 		let txid = commitment_tx.txid();
 		let sequence = commitment_tx.without_valid_witness().input[0].sequence as u64;
 		let locktime = commitment_tx.without_valid_witness().lock_time as u64;
-		let mut htlcs = Vec::with_capacity(htlc_outputs.len());
-		for htlc in htlc_outputs.clone() {
-			if let Some(_) = htlc.0.transaction_output_index {
-				htlcs.push((htlc.0, htlc.1, None));
-			}
-		}
-		commitment_tx.set_htlc_cache(local_keys.clone(), feerate_per_kw, htlcs);
+		let new_local_signed_commitment_tx = LocalSignedTx {
+			txid,
+			revocation_key: commitment_tx.local_keys.revocation_key,
+			a_htlc_key: commitment_tx.local_keys.a_htlc_key,
+			b_htlc_key: commitment_tx.local_keys.b_htlc_key,
+			delayed_payment_key: commitment_tx.local_keys.a_delayed_payment_key,
+			per_commitment_point: commitment_tx.local_keys.per_commitment_point,
+			feerate_per_kw: commitment_tx.feerate_per_kw,
+			htlc_outputs: htlc_outputs,
+		};
 		// Returning a monitor error before updating tracking points means in case of using
 		// a concurrent watchtower implementation for same channel, if this one doesn't
 		// reject update as we do, you MAY have the latest local valid commitment tx onchain
@@ -1271,16 +1219,7 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 		}
 		self.current_local_commitment_number = 0xffff_ffff_ffff - ((((sequence & 0xffffff) << 3*8) | (locktime as u64 & 0xffffff)) ^ self.commitment_transaction_number_obscure_factor);
 		self.prev_local_signed_commitment_tx = self.current_local_signed_commitment_tx.take();
-		self.current_local_signed_commitment_tx = Some(LocalSignedTx {
-			txid,
-			revocation_key: local_keys.revocation_key,
-			a_htlc_key: local_keys.a_htlc_key,
-			b_htlc_key: local_keys.b_htlc_key,
-			delayed_payment_key: local_keys.a_delayed_payment_key,
-			per_commitment_point: local_keys.per_commitment_point,
-			feerate_per_kw,
-			htlc_outputs: htlc_outputs,
-		});
+		self.current_local_signed_commitment_tx = Some(new_local_signed_commitment_tx);
 		Ok(())
 	}
 
@@ -1302,9 +1241,9 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 	pub(super) fn update_monitor_ooo(&mut self, mut updates: ChannelMonitorUpdate) -> Result<(), MonitorUpdateError> {
 		for update in updates.updates.drain(..) {
 			match update {
-				ChannelMonitorUpdateStep::LatestLocalCommitmentTXInfo { commitment_tx, local_keys, feerate_per_kw, htlc_outputs } => {
+				ChannelMonitorUpdateStep::LatestLocalCommitmentTXInfo { commitment_tx, htlc_outputs } => {
 					if self.lockdown_from_offchain { panic!(); }
-					self.provide_latest_local_commitment_tx_info(commitment_tx, local_keys, feerate_per_kw, htlc_outputs)?
+					self.provide_latest_local_commitment_tx_info(commitment_tx, htlc_outputs)?
 				},
 				ChannelMonitorUpdateStep::LatestRemoteCommitmentTXInfo { unsigned_commitment_tx, htlc_outputs, commitment_number, their_revocation_point } =>
 					self.provide_latest_remote_commitment_tx_info(&unsigned_commitment_tx, htlc_outputs, commitment_number, their_revocation_point),
@@ -1333,9 +1272,9 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 		}
 		for update in updates.updates.drain(..) {
 			match update {
-				ChannelMonitorUpdateStep::LatestLocalCommitmentTXInfo { commitment_tx, local_keys, feerate_per_kw, htlc_outputs } => {
+				ChannelMonitorUpdateStep::LatestLocalCommitmentTXInfo { commitment_tx, htlc_outputs } => {
 					if self.lockdown_from_offchain { panic!(); }
-					self.provide_latest_local_commitment_tx_info(commitment_tx, local_keys, feerate_per_kw, htlc_outputs)?
+					self.provide_latest_local_commitment_tx_info(commitment_tx, htlc_outputs)?
 				},
 				ChannelMonitorUpdateStep::LatestRemoteCommitmentTXInfo { unsigned_commitment_tx, htlc_outputs, commitment_number, their_revocation_point } =>
 					self.provide_latest_remote_commitment_tx_info(&unsigned_commitment_tx, htlc_outputs, commitment_number, their_revocation_point),
@@ -1366,11 +1305,8 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 	}
 
 	/// Gets the funding transaction outpoint of the channel this ChannelMonitor is monitoring for.
-	pub fn get_funding_txo(&self) -> Option<OutPoint> {
-		if let Some((outp, _)) = self.funding_info {
-			return Some(outp)
-		}
-		None
+	pub fn get_funding_txo(&self) -> OutPoint {
+		self.funding_info.0
 	}
 
 	/// Gets a list of txids, with their output scripts (in the order they appear in the
@@ -1463,11 +1399,8 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 			let revocation_key = ignore_error!(chan_utils::derive_private_revocation_key(&self.secp_ctx, &per_commitment_key, &self.keys.revocation_base_key()));
 			let b_htlc_key = ignore_error!(chan_utils::derive_public_key(&self.secp_ctx, &per_commitment_point, &self.keys.pubkeys().htlc_basepoint));
 			let local_payment_key = ignore_error!(chan_utils::derive_private_key(&self.secp_ctx, &per_commitment_point, &self.keys.payment_base_key()));
-			let delayed_key = ignore_error!(chan_utils::derive_public_key(&self.secp_ctx, &PublicKey::from_secret_key(&self.secp_ctx, &per_commitment_key), &self.their_delayed_payment_base_key.unwrap()));
-			let a_htlc_key = match self.their_htlc_base_key {
-				None => return (claimable_outpoints, (commitment_txid, watch_outputs)),
-				Some(their_htlc_base_key) => ignore_error!(chan_utils::derive_public_key(&self.secp_ctx, &PublicKey::from_secret_key(&self.secp_ctx, &per_commitment_key), &their_htlc_base_key)),
-			};
+			let delayed_key = ignore_error!(chan_utils::derive_public_key(&self.secp_ctx, &PublicKey::from_secret_key(&self.secp_ctx, &per_commitment_key), &self.their_delayed_payment_base_key));
+			let a_htlc_key = ignore_error!(chan_utils::derive_public_key(&self.secp_ctx, &PublicKey::from_secret_key(&self.secp_ctx, &per_commitment_key), &self.their_htlc_base_key));
 
 			let revokeable_redeemscript = chan_utils::get_revokeable_redeemscript(&revocation_pubkey, self.our_to_self_delay, &delayed_key);
 			let revokeable_p2wsh = revokeable_redeemscript.to_v0_p2wsh();
@@ -1618,10 +1551,7 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 					let revocation_pubkey = ignore_error!(chan_utils::derive_public_revocation_key(&self.secp_ctx, revocation_point, &self.keys.pubkeys().revocation_basepoint));
 					let b_htlc_key = ignore_error!(chan_utils::derive_public_key(&self.secp_ctx, revocation_point, &self.keys.pubkeys().htlc_basepoint));
 					let htlc_privkey = ignore_error!(chan_utils::derive_private_key(&self.secp_ctx, revocation_point, &self.keys.htlc_base_key()));
-					let a_htlc_key = match self.their_htlc_base_key {
-						None => return (claimable_outpoints, (commitment_txid, watch_outputs)),
-						Some(their_htlc_base_key) => ignore_error!(chan_utils::derive_public_key(&self.secp_ctx, revocation_point, &their_htlc_base_key)),
-					};
+					let a_htlc_key = ignore_error!(chan_utils::derive_public_key(&self.secp_ctx, revocation_point, &self.their_htlc_base_key));
 					let local_payment_key = ignore_error!(chan_utils::derive_private_key(&self.secp_ctx, revocation_point, &self.keys.payment_base_key()));
 
 					self.broadcasted_remote_payment_script = {
@@ -1675,10 +1605,7 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 		let per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &per_commitment_key);
 		let revocation_pubkey = ignore_error!(chan_utils::derive_public_revocation_key(&self.secp_ctx, &per_commitment_point, &self.keys.pubkeys().revocation_basepoint));
 		let revocation_key = ignore_error!(chan_utils::derive_private_revocation_key(&self.secp_ctx, &per_commitment_key, &self.keys.revocation_base_key()));
-		let delayed_key = match self.their_delayed_payment_base_key {
-			None => return (Vec::new(), None),
-			Some(their_delayed_payment_base_key) => ignore_error!(chan_utils::derive_public_key(&self.secp_ctx, &per_commitment_point, &their_delayed_payment_base_key)),
-		};
+		let delayed_key = ignore_error!(chan_utils::derive_public_key(&self.secp_ctx, &per_commitment_point, &self.their_delayed_payment_base_key));
 		let redeemscript = chan_utils::get_revokeable_redeemscript(&revocation_pubkey, self.our_to_self_delay, &delayed_key);
 
 		log_trace!(self, "Remote HTLC broadcast {}:{}", htlc_txid, 0);
@@ -1691,7 +1618,7 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 		let mut claim_requests = Vec::with_capacity(local_tx.htlc_outputs.len());
 		let mut watch_outputs = Vec::with_capacity(local_tx.htlc_outputs.len());
 
-		let redeemscript = chan_utils::get_revokeable_redeemscript(&local_tx.revocation_key, self.their_to_self_delay.unwrap(), &local_tx.delayed_payment_key);
+		let redeemscript = chan_utils::get_revokeable_redeemscript(&local_tx.revocation_key, self.their_to_self_delay, &local_tx.delayed_payment_key);
 		let broadcasted_local_revokable_script = if let Ok(local_delayedkey) = chan_utils::derive_private_key(&self.secp_ctx, &local_tx.per_commitment_point, self.keys.delayed_payment_base_key()) {
 			Some((redeemscript.to_v0_p2wsh(), local_delayedkey, redeemscript))
 		} else { None };
@@ -1801,7 +1728,7 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 	/// In any-case, choice is up to the user.
 	pub fn get_latest_local_commitment_txn(&mut self) -> Vec<Transaction> {
 		log_trace!(self, "Getting signed latest local commitment transaction!");
-		if let Some(commitment_tx) = self.onchain_tx_handler.get_fully_signed_local_tx(self.channel_value_satoshis.unwrap()) {
+		if let Some(commitment_tx) = self.onchain_tx_handler.get_fully_signed_local_tx() {
 			let txid = commitment_tx.txid();
 			let mut res = vec![commitment_tx];
 			if let &Some(ref local_tx) = &self.current_local_signed_commitment_tx {
@@ -1827,7 +1754,7 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 	#[cfg(test)]
 	pub fn unsafe_get_latest_local_commitment_txn(&mut self) -> Vec<Transaction> {
 		log_trace!(self, "Getting signed copy of latest local commitment transaction!");
-		if let Some(commitment_tx) = self.onchain_tx_handler.get_fully_signed_copy_local_tx(self.channel_value_satoshis.unwrap()) {
+		if let Some(commitment_tx) = self.onchain_tx_handler.get_fully_signed_copy_local_tx() {
 			let txid = commitment_tx.txid();
 			let mut res = vec![commitment_tx];
 			if let &Some(ref local_tx) = &self.current_local_signed_commitment_tx {
@@ -1873,8 +1800,7 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 				// which is an easy way to filter out any potential non-matching txn for lazy
 				// filters.
 				let prevout = &tx.input[0].previous_output;
-				let funding_txo = self.funding_info.clone();
-				if funding_txo.is_none() || (prevout.txid == funding_txo.as_ref().unwrap().0.txid && prevout.vout == funding_txo.as_ref().unwrap().0.index as u32) {
+				if prevout.txid == self.funding_info.0.txid && prevout.vout == self.funding_info.0.index as u32 {
 					if (tx.input[0].sequence >> 8*3) as u8 == 0x80 && (tx.lock_time >> 8*3) as u8 == 0x20 {
 						let (mut new_outpoints, new_outputs) = self.check_spend_remote_transaction(&tx, height);
 						if !new_outputs.1.is_empty() {
@@ -1910,11 +1836,11 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 			self.would_broadcast_at_height(height)
 		} else { false };
 		if should_broadcast {
-			claimable_outpoints.push(ClaimRequest { absolute_timelock: height, aggregable: false, outpoint: BitcoinOutPoint { txid: self.funding_info.as_ref().unwrap().0.txid.clone(), vout: self.funding_info.as_ref().unwrap().0.index as u32 }, witness_data: InputMaterial::Funding { channel_value: self.channel_value_satoshis.unwrap() }});
+			claimable_outpoints.push(ClaimRequest { absolute_timelock: height, aggregable: false, outpoint: BitcoinOutPoint { txid: self.funding_info.0.txid.clone(), vout: self.funding_info.0.index as u32 }, witness_data: InputMaterial::Funding { channel_value: self.channel_value_satoshis }});
 		}
 		if let Some(ref cur_local_tx) = self.current_local_signed_commitment_tx {
 			if should_broadcast {
-				if let Some(commitment_tx) = self.onchain_tx_handler.get_fully_signed_local_tx(self.channel_value_satoshis.unwrap()) {
+				if let Some(commitment_tx) = self.onchain_tx_handler.get_fully_signed_local_tx() {
 					let (mut new_outpoints, new_outputs, _) = self.broadcast_by_local_state(&commitment_tx, cur_local_tx);
 					if !new_outputs.is_empty() {
 						watch_outputs.push((cur_local_tx.txid.clone(), new_outputs));
@@ -2188,7 +2114,7 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 						outpoint: BitcoinOutPoint { txid: tx.txid(), vout: i as u32 },
 						key: broadcasted_local_revokable_script.1,
 						witness_script: broadcasted_local_revokable_script.2.clone(),
-						to_self_delay: self.their_to_self_delay.unwrap(),
+						to_self_delay: self.their_to_self_delay,
 						output: outp.clone(),
 					});
 					break;
@@ -2275,14 +2201,14 @@ impl<ChanSigner: ChannelKeys + Readable> ReadableArgs<Arc<Logger>> for (Sha256dH
 			txid: Readable::read(reader)?,
 			index: Readable::read(reader)?,
 		};
-		let funding_info = Some((outpoint, Readable::read(reader)?));
+		let funding_info = (outpoint, Readable::read(reader)?);
 		let current_remote_commitment_txid = Readable::read(reader)?;
 		let prev_remote_commitment_txid = Readable::read(reader)?;
 
-		let their_htlc_base_key = Some(Readable::read(reader)?);
-		let their_delayed_payment_base_key = Some(Readable::read(reader)?);
-		let funding_redeemscript = Some(Readable::read(reader)?);
-		let channel_value_satoshis = Some(Readable::read(reader)?);
+		let their_htlc_base_key = Readable::read(reader)?;
+		let their_delayed_payment_base_key = Readable::read(reader)?;
+		let funding_redeemscript = Readable::read(reader)?;
+		let channel_value_satoshis = Readable::read(reader)?;
 
 		let their_cur_revocation_points = {
 			let first_idx = <U48 as Readable>::read(reader)?.0;
@@ -2300,7 +2226,7 @@ impl<ChanSigner: ChannelKeys + Readable> ReadableArgs<Arc<Logger>> for (Sha256dH
 		};
 
 		let our_to_self_delay: u16 = Readable::read(reader)?;
-		let their_to_self_delay: Option<u16> = Some(Readable::read(reader)?);
+		let their_to_self_delay: u16 = Readable::read(reader)?;
 
 		let commitment_secrets = Readable::read(reader)?;
 
@@ -2549,7 +2475,7 @@ mod tests {
 	use ln::channelmonitor::ChannelMonitor;
 	use ln::onchaintx::{OnchainTxHandler, InputDescriptors};
 	use ln::chan_utils;
-	use ln::chan_utils::{HTLCOutputInCommitment, TxCreationKeys, LocalCommitmentTransaction};
+	use ln::chan_utils::{HTLCOutputInCommitment, LocalCommitmentTransaction};
 	use util::test_utils::TestLogger;
 	use secp256k1::key::{SecretKey,PublicKey};
 	use secp256k1::Secp256k1;
@@ -2563,20 +2489,6 @@ mod tests {
 		let logger = Arc::new(TestLogger::new());
 
 		let dummy_key = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
-		macro_rules! dummy_keys {
-			() => {
-				{
-					TxCreationKeys {
-						per_commitment_point: dummy_key.clone(),
-						revocation_key: dummy_key.clone(),
-						a_htlc_key: dummy_key.clone(),
-						b_htlc_key: dummy_key.clone(),
-						a_delayed_payment_key: dummy_key.clone(),
-						b_payment_key: dummy_key.clone(),
-					}
-				}
-			}
-		}
 		let dummy_tx = Transaction { version: 0, lock_time: 0, input: Vec::new(), output: Vec::new() };
 
 		let mut preimages = Vec::new();
@@ -2643,11 +2555,9 @@ mod tests {
 			(OutPoint { txid: Sha256dHash::from_slice(&[43; 32]).unwrap(), index: 0 }, Script::new()),
 			&PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[44; 32]).unwrap()),
 			&PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[45; 32]).unwrap()),
-			0, Script::new(), 46, 0, logger.clone());
-
-		monitor.their_to_self_delay = Some(10);
+			10, Script::new(), 46, 0, logger.clone());
 
-		monitor.provide_latest_local_commitment_tx_info(LocalCommitmentTransaction::dummy(), dummy_keys!(), 0, preimages_to_local_htlcs!(preimages[0..10])).unwrap();
+		monitor.provide_latest_local_commitment_tx_info(LocalCommitmentTransaction::dummy(), preimages_to_local_htlcs!(preimages[0..10])).unwrap();
 		monitor.provide_latest_remote_commitment_tx_info(&dummy_tx, preimages_slice_to_htlc_outputs!(preimages[5..15]), 281474976710655, dummy_key);
 		monitor.provide_latest_remote_commitment_tx_info(&dummy_tx, preimages_slice_to_htlc_outputs!(preimages[15..20]), 281474976710654, dummy_key);
 		monitor.provide_latest_remote_commitment_tx_info(&dummy_tx, preimages_slice_to_htlc_outputs!(preimages[17..20]), 281474976710653, dummy_key);
@@ -2673,7 +2583,7 @@ mod tests {
 
 		// Now update local commitment tx info, pruning only element 18 as we still care about the
 		// previous commitment tx's preimages too
-		monitor.provide_latest_local_commitment_tx_info(LocalCommitmentTransaction::dummy(), dummy_keys!(), 0, preimages_to_local_htlcs!(preimages[0..5])).unwrap();
+		monitor.provide_latest_local_commitment_tx_info(LocalCommitmentTransaction::dummy(), preimages_to_local_htlcs!(preimages[0..5])).unwrap();
 		secret[0..32].clone_from_slice(&hex::decode("2273e227a5b7449b6e70f1fb4652864038b1cbf9cd7c043a7d6456b7fc275ad8").unwrap());
 		monitor.provide_secret(281474976710653, secret.clone()).unwrap();
 		assert_eq!(monitor.payment_preimages.len(), 12);
@@ -2681,7 +2591,7 @@ mod tests {
 		test_preimages_exist!(&preimages[18..20], monitor);
 
 		// But if we do it again, we'll prune 5-10
-		monitor.provide_latest_local_commitment_tx_info(LocalCommitmentTransaction::dummy(), dummy_keys!(), 0, preimages_to_local_htlcs!(preimages[0..3])).unwrap();
+		monitor.provide_latest_local_commitment_tx_info(LocalCommitmentTransaction::dummy(), preimages_to_local_htlcs!(preimages[0..3])).unwrap();
 		secret[0..32].clone_from_slice(&hex::decode("27cddaa5624534cb6cb9d7da077cf2b22ab21e9b506fd4998a51d54502e99116").unwrap());
 		monitor.provide_secret(281474976710652, secret.clone()).unwrap();
 		assert_eq!(monitor.payment_preimages.len(), 5);