pub first_per_commitment_point: PublicKey,
/// The channel flags to be used
pub channel_flags: u8,
- /// Optionally, a request to pre-set the to-sender output's `scriptPubkey` for when we collaboratively close
- pub shutdown_scriptpubkey: OptionalField<Script>,
+ /// A request to pre-set the to-sender output's `scriptPubkey` for when we collaboratively close
+ pub shutdown_scriptpubkey: Option<Script>,
/// The channel type that this channel will represent
///
/// If this is `None`, we derive the channel type from the intersection of our
pub htlc_basepoint: PublicKey,
/// The first to-be-broadcast-by-sender transaction's per commitment point
pub first_per_commitment_point: PublicKey,
- /// Optionally, a request to pre-set the to-sender output's scriptPubkey for when we collaboratively close
- pub shutdown_scriptpubkey: OptionalField<Script>,
+ /// A request to pre-set the to-sender output's scriptPubkey for when we collaboratively close
+ pub shutdown_scriptpubkey: Option<Script>,
/// The channel type that this channel will represent.
///
/// If this is `None`, we derive the channel type from the intersection of
pub feerate_per_kw: u32,
}
-#[derive(Clone, Debug, PartialEq, Eq)]
-/// Proof that the sender knows the per-commitment secret of the previous commitment transaction.
-///
-/// This is used to convince the recipient that the channel is at a certain commitment
-/// number even if they lost that data due to a local failure. Of course, the peer may lie
-/// and even later commitments may have been revoked.
-pub struct DataLossProtect {
- /// Proof that the sender knows the per-commitment secret of a specific commitment transaction
- /// belonging to the recipient
- pub your_last_per_commitment_secret: [u8; 32],
- /// The sender's per-commitment point for their current commitment transaction
- pub my_current_per_commitment_point: PublicKey,
-}
-
/// A [`channel_reestablish`] message to be sent to or received from a peer.
///
/// [`channel_reestablish`]: https://github.com/lightning/bolts/blob/master/02-peer-protocol.md#message-retransmission
pub next_local_commitment_number: u64,
/// The next commitment number for the recipient
pub next_remote_commitment_number: u64,
- /// Optionally, a field proving that next_remote_commitment_number-1 has been revoked
- pub data_loss_protect: OptionalField<DataLossProtect>,
+ /// Proof that the sender knows the per-commitment secret of a specific commitment transaction
+ /// belonging to the recipient
+ pub your_last_per_commitment_secret: [u8; 32],
+ /// The sender's per-commitment point for their current commitment transaction
+ pub my_current_per_commitment_point: PublicKey,
}
/// An [`announcement_signatures`] message to be sent to or received from a peer.
pub commitment_signed: CommitmentSigned,
}
-/// Messages could have optional fields to use with extended features
-/// As we wish to serialize these differently from `Option<T>`s (`Options` get a tag byte, but
-/// [`OptionalField`] simply gets `Present` if there are enough bytes to read into it), we have a
-/// separate enum type for them.
-///
-/// This is not exported to bindings users due to a free generic in `T`
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub enum OptionalField<T> {
- /// Optional field is included in message
- Present(T),
- /// Optional field is absent in message
- Absent
-}
-
/// A trait to describe an object which can receive channel messages.
///
/// Messages MAY be called in parallel when they originate from different `their_node_ids`, however
}
}
-impl Writeable for OptionalField<Script> {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
- match *self {
- OptionalField::Present(ref script) => {
- // Note that Writeable for script includes the 16-bit length tag for us
- script.write(w)?;
- },
- OptionalField::Absent => {}
- }
- Ok(())
- }
-}
-
-impl Readable for OptionalField<Script> {
- fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
- match <u16 as Readable>::read(r) {
- Ok(len) => {
- let mut buf = vec![0; len as usize];
- r.read_exact(&mut buf)?;
- Ok(OptionalField::Present(Script::from(buf)))
- },
- Err(DecodeError::ShortRead) => Ok(OptionalField::Absent),
- Err(e) => Err(e)
- }
- }
-}
-
-impl Writeable for OptionalField<u64> {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
- match *self {
- OptionalField::Present(ref value) => {
- value.write(w)?;
- },
- OptionalField::Absent => {}
- }
- Ok(())
- }
-}
-
-impl Readable for OptionalField<u64> {
- fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
- let value: u64 = Readable::read(r)?;
- Ok(OptionalField::Present(value))
- }
-}
-
#[cfg(not(taproot))]
impl_writeable_msg!(AcceptChannel, {
temporary_channel_id,
delayed_payment_basepoint,
htlc_basepoint,
first_per_commitment_point,
- shutdown_scriptpubkey
}, {
+ (0, shutdown_scriptpubkey, (option, encoding: (Script, WithoutLength))), // Don't encode length twice.
(1, channel_type, option),
});
delayed_payment_basepoint,
htlc_basepoint,
first_per_commitment_point,
- shutdown_scriptpubkey
}, {
+ (0, shutdown_scriptpubkey, (option, encoding: (Script, WithoutLength))), // Don't encode length twice.
(1, channel_type, option),
(4, next_local_nonce, option),
});
bitcoin_signature
}, {});
-impl Writeable for ChannelReestablish {
- fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
- self.channel_id.write(w)?;
- self.next_local_commitment_number.write(w)?;
- self.next_remote_commitment_number.write(w)?;
- match self.data_loss_protect {
- OptionalField::Present(ref data_loss_protect) => {
- (*data_loss_protect).your_last_per_commitment_secret.write(w)?;
- (*data_loss_protect).my_current_per_commitment_point.write(w)?;
- },
- OptionalField::Absent => {}
- }
- Ok(())
- }
-}
-
-impl Readable for ChannelReestablish{
- fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
- Ok(Self {
- channel_id: Readable::read(r)?,
- next_local_commitment_number: Readable::read(r)?,
- next_remote_commitment_number: Readable::read(r)?,
- data_loss_protect: {
- match <[u8; 32] as Readable>::read(r) {
- Ok(your_last_per_commitment_secret) =>
- OptionalField::Present(DataLossProtect {
- your_last_per_commitment_secret,
- my_current_per_commitment_point: Readable::read(r)?,
- }),
- Err(DecodeError::ShortRead) => OptionalField::Absent,
- Err(e) => return Err(e)
- }
- }
- })
- }
-}
+impl_writeable_msg!(ChannelReestablish, {
+ channel_id,
+ next_local_commitment_number,
+ next_remote_commitment_number,
+ your_last_per_commitment_secret,
+ my_current_per_commitment_point,
+}, {});
impl_writeable_msg!(ClosingSigned,
{ channel_id, fee_satoshis, signature },
htlc_basepoint,
first_per_commitment_point,
channel_flags,
- shutdown_scriptpubkey
}, {
+ (0, shutdown_scriptpubkey, (option, encoding: (Script, WithoutLength))), // Don't encode length twice.
(1, channel_type, option),
});
use crate::ln::{PaymentPreimage, PaymentHash, PaymentSecret};
use crate::ln::features::{ChannelFeatures, ChannelTypeFeatures, InitFeatures, NodeFeatures};
use crate::ln::msgs;
- use crate::ln::msgs::{FinalOnionHopData, OptionalField, OnionErrorPacket, OnionHopDataFormat};
+ use crate::ln::msgs::{FinalOnionHopData, OnionErrorPacket, OnionHopDataFormat};
use crate::routing::gossip::{NodeAlias, NodeId};
use crate::util::ser::{Writeable, Readable, Hostname};
use core::convert::TryFrom;
#[test]
- fn encoding_channel_reestablish_no_secret() {
- let cr = msgs::ChannelReestablish {
- channel_id: [4, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0],
- next_local_commitment_number: 3,
- next_remote_commitment_number: 4,
- data_loss_protect: OptionalField::Absent,
- };
-
- let encoded_value = cr.encode();
- assert_eq!(
- encoded_value,
- vec![4, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 4]
- );
- }
-
- #[test]
- fn encoding_channel_reestablish_with_secret() {
+ fn encoding_channel_reestablish() {
let public_key = {
let secp_ctx = Secp256k1::new();
PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&hex::decode("0101010101010101010101010101010101010101010101010101010101010101").unwrap()[..]).unwrap())
channel_id: [4, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0],
next_local_commitment_number: 3,
next_remote_commitment_number: 4,
- data_loss_protect: OptionalField::Present(msgs::DataLossProtect { your_last_per_commitment_secret: [9;32], my_current_per_commitment_point: public_key}),
+ your_last_per_commitment_secret: [9;32],
+ my_current_per_commitment_point: public_key,
};
let encoded_value = cr.encode();
htlc_basepoint: pubkey_5,
first_per_commitment_point: pubkey_6,
channel_flags: if random_bit { 1 << 5 } else { 0 },
- shutdown_scriptpubkey: if shutdown { OptionalField::Present(Address::p2pkh(&::bitcoin::PublicKey{compressed: true, inner: pubkey_1}, Network::Testnet).script_pubkey()) } else { OptionalField::Absent },
+ shutdown_scriptpubkey: if shutdown { Some(Address::p2pkh(&::bitcoin::PublicKey{compressed: true, inner: pubkey_1}, Network::Testnet).script_pubkey()) } else { None },
channel_type: if incl_chan_type { Some(ChannelTypeFeatures::empty()) } else { None },
};
let encoded_value = open_channel.encode();
delayed_payment_basepoint: pubkey_4,
htlc_basepoint: pubkey_5,
first_per_commitment_point: pubkey_6,
- shutdown_scriptpubkey: if shutdown { OptionalField::Present(Address::p2pkh(&::bitcoin::PublicKey{compressed: true, inner: pubkey_1}, Network::Testnet).script_pubkey()) } else { OptionalField::Absent },
+ shutdown_scriptpubkey: if shutdown { Some(Address::p2pkh(&::bitcoin::PublicKey{compressed: true, inner: pubkey_1}, Network::Testnet).script_pubkey()) } else { None },
channel_type: None,
#[cfg(taproot)]
next_local_nonce: None,
projects / rust-lightning / blobdiff