]> git.bitcoin.ninja Git - rust-lightning/commitdiff
Convert most chain::* inner structs and enums to TLV-based ser macros
authorMatt Corallo <git@bluematt.me>
Mon, 31 May 2021 16:41:02 +0000 (16:41 +0000)
committerMatt Corallo <git@bluematt.me>
Tue, 1 Jun 2021 21:53:06 +0000 (21:53 +0000)
lightning/src/chain/channelmonitor.rs
lightning/src/chain/onchaintx.rs
lightning/src/chain/package.rs

index 7a504d9e421fa1ac5f0b9dc42009183f636b2ddf..d69f2baf560cb8809b40dfb1fa4a535e06ba1073 100644 (file)
@@ -198,7 +198,12 @@ pub struct HTLCUpdate {
        pub(crate) payment_preimage: Option<PaymentPreimage>,
        pub(crate) source: HTLCSource
 }
-impl_writeable!(HTLCUpdate, 0, { payment_hash, payment_preimage, source });
+impl_writeable_tlv_based!(HTLCUpdate, {
+       (0, payment_hash),
+       (2, source),
+}, {
+       (4, payment_preimage)
+}, {});
 
 /// If an HTLC expires within this many blocks, don't try to claim it in a shared transaction,
 /// instead claiming it in its own individual transaction.
@@ -264,6 +269,17 @@ struct HolderSignedTx {
        feerate_per_kw: u32,
        htlc_outputs: Vec<(HTLCOutputInCommitment, Option<Signature>, Option<HTLCSource>)>,
 }
+impl_writeable_tlv_based!(HolderSignedTx, {
+       (0, txid),
+       (2, revocation_key),
+       (4, a_htlc_key),
+       (6, b_htlc_key),
+       (8, delayed_payment_key),
+       (10, per_commitment_point),
+       (12, feerate_per_kw),
+}, {}, {
+       (14, htlc_outputs)
+});
 
 /// We use this to track counterparty commitment transactions and htlcs outputs and
 /// use it to generate any justice or 2nd-stage preimage/timeout transactions.
@@ -359,6 +375,22 @@ enum OnchainEvent {
        },
 }
 
+impl_writeable_tlv_based!(OnchainEventEntry, {
+       (0, txid),
+       (2, height),
+       (4, event),
+}, {}, {});
+
+impl_writeable_tlv_based_enum!(OnchainEvent,
+       (0, HTLCUpdate) => {
+               (0, source),
+               (2, payment_hash),
+       }, {}, {},
+       (1, MaturingOutput) => {
+               (0, descriptor),
+       }, {}, {},
+;);
+
 #[cfg_attr(any(test, feature = "fuzztarget", feature = "_test_utils"), derive(PartialEq))]
 #[derive(Clone)]
 pub(crate) enum ChannelMonitorUpdateStep {
@@ -388,98 +420,30 @@ pub(crate) enum ChannelMonitorUpdateStep {
        },
 }
 
-impl Writeable for ChannelMonitorUpdateStep {
-       fn write<W: Writer>(&self, w: &mut W) -> Result<(), ::std::io::Error> {
-               match self {
-                       &ChannelMonitorUpdateStep::LatestHolderCommitmentTXInfo { ref commitment_tx, ref htlc_outputs } => {
-                               0u8.write(w)?;
-                               commitment_tx.write(w)?;
-                               (htlc_outputs.len() as u64).write(w)?;
-                               for &(ref output, ref signature, ref source) in htlc_outputs.iter() {
-                                       output.write(w)?;
-                                       signature.write(w)?;
-                                       source.write(w)?;
-                               }
-                       }
-                       &ChannelMonitorUpdateStep::LatestCounterpartyCommitmentTXInfo { commitment_txid, ref htlc_outputs, ref commitment_number, ref their_revocation_point } => {
-                               1u8.write(w)?;
-                               commitment_txid.write(w)?;
-                               commitment_number.write(w)?;
-                               their_revocation_point.write(w)?;
-                               (htlc_outputs.len() as u64).write(w)?;
-                               for &(ref output, ref source) in htlc_outputs.iter() {
-                                       output.write(w)?;
-                                       source.as_ref().map(|b| b.as_ref()).write(w)?;
-                               }
-                       },
-                       &ChannelMonitorUpdateStep::PaymentPreimage { ref payment_preimage } => {
-                               2u8.write(w)?;
-                               payment_preimage.write(w)?;
-                       },
-                       &ChannelMonitorUpdateStep::CommitmentSecret { ref idx, ref secret } => {
-                               3u8.write(w)?;
-                               idx.write(w)?;
-                               secret.write(w)?;
-                       },
-                       &ChannelMonitorUpdateStep::ChannelForceClosed { ref should_broadcast } => {
-                               4u8.write(w)?;
-                               should_broadcast.write(w)?;
-                       },
-               }
-               Ok(())
-       }
-}
-impl Readable for ChannelMonitorUpdateStep {
-       fn read<R: ::std::io::Read>(r: &mut R) -> Result<Self, DecodeError> {
-               match Readable::read(r)? {
-                       0u8 => {
-                               Ok(ChannelMonitorUpdateStep::LatestHolderCommitmentTXInfo {
-                                       commitment_tx: Readable::read(r)?,
-                                       htlc_outputs: {
-                                               let len: u64 = Readable::read(r)?;
-                                               let mut res = Vec::new();
-                                               for _ in 0..len {
-                                                       res.push((Readable::read(r)?, Readable::read(r)?, Readable::read(r)?));
-                                               }
-                                               res
-                                       },
-                               })
-                       },
-                       1u8 => {
-                               Ok(ChannelMonitorUpdateStep::LatestCounterpartyCommitmentTXInfo {
-                                       commitment_txid: Readable::read(r)?,
-                                       commitment_number: Readable::read(r)?,
-                                       their_revocation_point: Readable::read(r)?,
-                                       htlc_outputs: {
-                                               let len: u64 = Readable::read(r)?;
-                                               let mut res = Vec::new();
-                                               for _ in 0..len {
-                                                       res.push((Readable::read(r)?, <Option<HTLCSource> as Readable>::read(r)?.map(|o| Box::new(o))));
-                                               }
-                                               res
-                                       },
-                               })
-                       },
-                       2u8 => {
-                               Ok(ChannelMonitorUpdateStep::PaymentPreimage {
-                                       payment_preimage: Readable::read(r)?,
-                               })
-                       },
-                       3u8 => {
-                               Ok(ChannelMonitorUpdateStep::CommitmentSecret {
-                                       idx: Readable::read(r)?,
-                                       secret: Readable::read(r)?,
-                               })
-                       },
-                       4u8 => {
-                               Ok(ChannelMonitorUpdateStep::ChannelForceClosed {
-                                       should_broadcast: Readable::read(r)?
-                               })
-                       },
-                       _ => Err(DecodeError::InvalidValue),
-               }
-       }
-}
+impl_writeable_tlv_based_enum!(ChannelMonitorUpdateStep,
+       (0, LatestHolderCommitmentTXInfo) => {
+               (0, commitment_tx),
+       }, {}, {
+               (2, htlc_outputs),
+       },
+       (1, LatestCounterpartyCommitmentTXInfo) => {
+               (0, commitment_txid),
+               (2, commitment_number),
+               (4, their_revocation_point),
+       }, {}, {
+               (6, htlc_outputs),
+       },
+       (2, PaymentPreimage) => {
+               (0, payment_preimage),
+       }, {}, {},
+       (3, CommitmentSecret) => {
+               (0, idx),
+               (2, secret),
+       }, {}, {},
+       (4, ChannelForceClosed) => {
+               (0, should_broadcast),
+       }, {}, {},
+;);
 
 /// A ChannelMonitor handles chain events (blocks connected and disconnected) and generates
 /// on-chain transactions to ensure no loss of funds occurs.
@@ -754,38 +718,14 @@ impl<Signer: Sign> Writeable for ChannelMonitorImpl<Signer> {
                        writer.write_all(&byte_utils::be48_to_array(*commitment_number))?;
                }
 
-               macro_rules! serialize_holder_tx {
-                       ($holder_tx: expr) => {
-                               $holder_tx.txid.write(writer)?;
-                               writer.write_all(&$holder_tx.revocation_key.serialize())?;
-                               writer.write_all(&$holder_tx.a_htlc_key.serialize())?;
-                               writer.write_all(&$holder_tx.b_htlc_key.serialize())?;
-                               writer.write_all(&$holder_tx.delayed_payment_key.serialize())?;
-                               writer.write_all(&$holder_tx.per_commitment_point.serialize())?;
-
-                               writer.write_all(&byte_utils::be32_to_array($holder_tx.feerate_per_kw))?;
-                               writer.write_all(&byte_utils::be64_to_array($holder_tx.htlc_outputs.len() as u64))?;
-                               for &(ref htlc_output, ref sig, ref htlc_source) in $holder_tx.htlc_outputs.iter() {
-                                       serialize_htlc_in_commitment!(htlc_output);
-                                       if let &Some(ref their_sig) = sig {
-                                               1u8.write(writer)?;
-                                               writer.write_all(&their_sig.serialize_compact())?;
-                                       } else {
-                                               0u8.write(writer)?;
-                                       }
-                                       htlc_source.write(writer)?;
-                               }
-                       }
-               }
-
                if let Some(ref prev_holder_tx) = self.prev_holder_signed_commitment_tx {
                        writer.write_all(&[1; 1])?;
-                       serialize_holder_tx!(prev_holder_tx);
+                       prev_holder_tx.write(writer)?;
                } else {
                        writer.write_all(&[0; 1])?;
                }
 
-               serialize_holder_tx!(self.current_holder_commitment_tx);
+               self.current_holder_commitment_tx.write(writer)?;
 
                writer.write_all(&byte_utils::be48_to_array(self.current_counterparty_commitment_number))?;
                writer.write_all(&byte_utils::be48_to_array(self.current_holder_commitment_number))?;
@@ -816,19 +756,7 @@ impl<Signer: Sign> Writeable for ChannelMonitorImpl<Signer> {
 
                writer.write_all(&byte_utils::be64_to_array(self.onchain_events_awaiting_threshold_conf.len() as u64))?;
                for ref entry in self.onchain_events_awaiting_threshold_conf.iter() {
-                       entry.txid.write(writer)?;
-                       writer.write_all(&byte_utils::be32_to_array(entry.height))?;
-                       match entry.event {
-                               OnchainEvent::HTLCUpdate { ref source, ref payment_hash } => {
-                                       0u8.write(writer)?;
-                                       source.write(writer)?;
-                                       payment_hash.write(writer)?;
-                               },
-                               OnchainEvent::MaturingOutput { ref descriptor } => {
-                                       1u8.write(writer)?;
-                                       descriptor.write(writer)?;
-                               },
-                       }
+                       entry.write(writer)?;
                }
 
                (self.outputs_to_watch.len() as u64).write(writer)?;
@@ -2726,46 +2654,14 @@ impl<'a, Signer: Sign, K: KeysInterface<Signer = Signer>> ReadableArgs<&'a K>
                        }
                }
 
-               macro_rules! read_holder_tx {
-                       () => {
-                               {
-                                       let txid = Readable::read(reader)?;
-                                       let revocation_key = Readable::read(reader)?;
-                                       let a_htlc_key = Readable::read(reader)?;
-                                       let b_htlc_key = Readable::read(reader)?;
-                                       let delayed_payment_key = Readable::read(reader)?;
-                                       let per_commitment_point = Readable::read(reader)?;
-                                       let feerate_per_kw: u32 = Readable::read(reader)?;
-
-                                       let htlcs_len: u64 = Readable::read(reader)?;
-                                       let mut htlcs = Vec::with_capacity(cmp::min(htlcs_len as usize, MAX_ALLOC_SIZE / 128));
-                                       for _ in 0..htlcs_len {
-                                               let htlc = read_htlc_in_commitment!();
-                                               let sigs = match <u8 as Readable>::read(reader)? {
-                                                       0 => None,
-                                                       1 => Some(Readable::read(reader)?),
-                                                       _ => return Err(DecodeError::InvalidValue),
-                                               };
-                                               htlcs.push((htlc, sigs, Readable::read(reader)?));
-                                       }
-
-                                       HolderSignedTx {
-                                               txid,
-                                               revocation_key, a_htlc_key, b_htlc_key, delayed_payment_key, per_commitment_point, feerate_per_kw,
-                                               htlc_outputs: htlcs
-                                       }
-                               }
-                       }
-               }
-
                let prev_holder_signed_commitment_tx = match <u8 as Readable>::read(reader)? {
                        0 => None,
                        1 => {
-                               Some(read_holder_tx!())
+                               Some(Readable::read(reader)?)
                        },
                        _ => return Err(DecodeError::InvalidValue),
                };
-               let current_holder_commitment_tx = read_holder_tx!();
+               let current_holder_commitment_tx = Readable::read(reader)?;
 
                let current_counterparty_commitment_number = <U48 as Readable>::read(reader)?.0;
                let current_holder_commitment_number = <U48 as Readable>::read(reader)?.0;
@@ -2804,26 +2700,7 @@ impl<'a, Signer: Sign, K: KeysInterface<Signer = Signer>> ReadableArgs<&'a K>
                let waiting_threshold_conf_len: u64 = Readable::read(reader)?;
                let mut onchain_events_awaiting_threshold_conf = Vec::with_capacity(cmp::min(waiting_threshold_conf_len as usize, MAX_ALLOC_SIZE / 128));
                for _ in 0..waiting_threshold_conf_len {
-                       let txid = Readable::read(reader)?;
-                       let height = Readable::read(reader)?;
-                       let event = match <u8 as Readable>::read(reader)? {
-                               0 => {
-                                       let htlc_source = Readable::read(reader)?;
-                                       let hash = Readable::read(reader)?;
-                                       OnchainEvent::HTLCUpdate {
-                                               source: htlc_source,
-                                               payment_hash: hash,
-                                       }
-                               },
-                               1 => {
-                                       let descriptor = Readable::read(reader)?;
-                                       OnchainEvent::MaturingOutput {
-                                               descriptor
-                                       }
-                               },
-                               _ => return Err(DecodeError::InvalidValue),
-                       };
-                       onchain_events_awaiting_threshold_conf.push(OnchainEventEntry { txid, height, event });
+                       onchain_events_awaiting_threshold_conf.push(Readable::read(reader)?);
                }
 
                let outputs_to_watch_len: u64 = Readable::read(reader)?;
index 1f604422f5ccf5890c0901a4e43a2fd7bea56393..dd4d1d8f0b37f844c8262673cafc6e1b98407585 100644 (file)
@@ -79,6 +79,21 @@ enum OnchainEvent {
        }
 }
 
+impl_writeable_tlv_based!(OnchainEventEntry, {
+       (0, txid),
+       (2, height),
+       (4, event),
+}, {}, {});
+
+impl_writeable_tlv_based_enum!(OnchainEvent,
+       (0, Claim) => {
+               (0, claim_request),
+       }, {}, {},
+       (1, ContentiousOutpoint) => {
+               (0, package),
+       }, {}, {},
+;);
+
 impl Readable for Option<Vec<Option<(usize, Signature)>>> {
        fn read<R: ::std::io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
                match Readable::read(reader)? {
@@ -219,18 +234,7 @@ impl<ChannelSigner: Sign> OnchainTxHandler<ChannelSigner> {
 
                writer.write_all(&byte_utils::be64_to_array(self.onchain_events_awaiting_threshold_conf.len() as u64))?;
                for ref entry in self.onchain_events_awaiting_threshold_conf.iter() {
-                       entry.txid.write(writer)?;
-                       writer.write_all(&byte_utils::be32_to_array(entry.height))?;
-                       match entry.event {
-                               OnchainEvent::Claim { ref claim_request } => {
-                                       writer.write_all(&[0; 1])?;
-                                       claim_request.write(writer)?;
-                               },
-                               OnchainEvent::ContentiousOutpoint { ref package } => {
-                                       writer.write_all(&[1; 1])?;
-                                       package.write(writer)?;
-                               }
-                       }
+                       entry.write(writer)?;
                }
 
                write_tlv_fields!(writer, {}, {});
@@ -292,24 +296,7 @@ impl<'a, K: KeysInterface> ReadableArgs<&'a K> for OnchainTxHandler<K::Signer> {
                let waiting_threshold_conf_len: u64 = Readable::read(reader)?;
                let mut onchain_events_awaiting_threshold_conf = Vec::with_capacity(cmp::min(waiting_threshold_conf_len as usize, MAX_ALLOC_SIZE / 128));
                for _ in 0..waiting_threshold_conf_len {
-                       let txid = Readable::read(reader)?;
-                       let height = Readable::read(reader)?;
-                       let event = match <u8 as Readable>::read(reader)? {
-                               0 => {
-                                       let claim_request = Readable::read(reader)?;
-                                       OnchainEvent::Claim {
-                                               claim_request
-                                       }
-                               },
-                               1 => {
-                                       let package = Readable::read(reader)?;
-                                       OnchainEvent::ContentiousOutpoint {
-                                               package
-                                       }
-                               }
-                               _ => return Err(DecodeError::InvalidValue),
-                       };
-                       onchain_events_awaiting_threshold_conf.push(OnchainEventEntry { txid, height, event });
+                       onchain_events_awaiting_threshold_conf.push(Readable::read(reader)?);
                }
 
                read_tlv_fields!(reader, {}, {});
index a7339468991f93f462ab132ee6104b7860a4fb70..bd983ecd9163589b19b12f85199c9d851d0fb5f0 100644 (file)
@@ -404,65 +404,14 @@ impl PackageSolvingData {
        }
 }
 
-impl Writeable for PackageSolvingData {
-       fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
-               match self {
-                       PackageSolvingData::RevokedOutput(ref revoked_outp) => {
-                               0u8.write(writer)?;
-                               revoked_outp.write(writer)?;
-                       },
-                       PackageSolvingData::RevokedHTLCOutput(ref revoked_outp) => {
-                               1u8.write(writer)?;
-                               revoked_outp.write(writer)?;
-                       },
-                       PackageSolvingData::CounterpartyOfferedHTLCOutput(ref counterparty_outp) => {
-                               2u8.write(writer)?;
-                               counterparty_outp.write(writer)?;
-                       },
-                       PackageSolvingData::CounterpartyReceivedHTLCOutput(ref counterparty_outp) => {
-                               3u8.write(writer)?;
-                               counterparty_outp.write(writer)?;
-                       },
-                       PackageSolvingData::HolderHTLCOutput(ref holder_outp) => {
-                               4u8.write(writer)?;
-                               holder_outp.write(writer)?;
-                       },
-                       PackageSolvingData::HolderFundingOutput(ref funding_outp) => {
-                               5u8.write(writer)?;
-                               funding_outp.write(writer)?;
-                       }
-               }
-               Ok(())
-       }
-}
-
-impl Readable for PackageSolvingData {
-       fn read<R: ::std::io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
-               let byte = <u8 as Readable>::read(reader)?;
-               let solving_data = match byte {
-                       0 => {
-                               PackageSolvingData::RevokedOutput(Readable::read(reader)?)
-                       },
-                       1 => {
-                               PackageSolvingData::RevokedHTLCOutput(Readable::read(reader)?)
-                       },
-                       2 => {
-                               PackageSolvingData::CounterpartyOfferedHTLCOutput(Readable::read(reader)?)
-                       },
-                       3 => {
-                               PackageSolvingData::CounterpartyReceivedHTLCOutput(Readable::read(reader)?)
-                       },
-                       4 => {
-                               PackageSolvingData::HolderHTLCOutput(Readable::read(reader)?)
-                       },
-                       5 => {
-                               PackageSolvingData::HolderFundingOutput(Readable::read(reader)?)
-                       }
-                       _ => return Err(DecodeError::UnknownVersion)
-               };
-               Ok(solving_data)
-       }
-}
+impl_writeable_tlv_based_enum!(PackageSolvingData, ;
+       (0, RevokedOutput),
+       (1, RevokedHTLCOutput),
+       (2, CounterpartyOfferedHTLCOutput),
+       (3, CounterpartyReceivedHTLCOutput),
+       (4, HolderHTLCOutput),
+       (5, HolderFundingOutput),
+);
 
 /// A malleable package might be aggregated with other packages to save on fees.
 /// A untractable package has been counter-signed and aggregable will break cached counterparty