use io::{self, Read};
use io_extras::read_to_end;
-use util::events::MessageSendEventsProvider;
+use util::events::{MessageSendEventsProvider, OnionMessageProvider};
use util::logger;
use util::ser::{BigSize, LengthReadable, Readable, ReadableArgs, Writeable, Writer, FixedLengthReader, HighZeroBytesDroppedBigSize, Hostname};
pub(crate) const MAX_VALUE_MSAT: u64 = 21_000_000_0000_0000_000;
/// An error in decoding a message or struct.
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub enum DecodeError {
/// A version byte specified something we don't know how to handle.
/// Includes unknown realm byte in an OnionHopData packet
}
/// An init message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Init {
/// The relevant features which the sender supports
pub features: InitFeatures,
}
/// An error message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct ErrorMessage {
/// The channel ID involved in the error.
///
}
/// A warning message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct WarningMessage {
/// The channel ID involved in the warning.
///
}
/// A ping message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Ping {
/// The desired response length
pub ponglen: u16,
}
/// A pong message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Pong {
/// The pong packet size.
/// This field is not sent on the wire. byteslen zeros are sent.
}
/// An open_channel message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct OpenChannel {
/// The genesis hash of the blockchain where the channel is to be opened
pub chain_hash: BlockHash,
}
/// An accept_channel message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct AcceptChannel {
/// A temporary channel ID, until the funding outpoint is announced
pub temporary_channel_id: [u8; 32],
}
/// A funding_created message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct FundingCreated {
/// A temporary channel ID, until the funding is established
pub temporary_channel_id: [u8; 32],
}
/// A funding_signed message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct FundingSigned {
/// The channel ID
pub channel_id: [u8; 32],
}
/// A channel_ready message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct ChannelReady {
/// The channel ID
pub channel_id: [u8; 32],
}
/// A shutdown message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Shutdown {
/// The channel ID
pub channel_id: [u8; 32],
/// The minimum and maximum fees which the sender is willing to place on the closing transaction.
/// This is provided in [`ClosingSigned`] by both sides to indicate the fee range they are willing
/// to use.
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct ClosingSignedFeeRange {
/// The minimum absolute fee, in satoshis, which the sender is willing to place on the closing
/// transaction.
}
/// A closing_signed message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct ClosingSigned {
/// The channel ID
pub channel_id: [u8; 32],
}
/// An update_add_htlc message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct UpdateAddHTLC {
/// The channel ID
pub channel_id: [u8; 32],
}
/// An onion message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct OnionMessage {
/// Used in decrypting the onion packet's payload.
pub blinding_point: PublicKey,
}
/// An update_fulfill_htlc message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct UpdateFulfillHTLC {
/// The channel ID
pub channel_id: [u8; 32],
}
/// An update_fail_htlc message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct UpdateFailHTLC {
/// The channel ID
pub channel_id: [u8; 32],
}
/// An update_fail_malformed_htlc message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct UpdateFailMalformedHTLC {
/// The channel ID
pub channel_id: [u8; 32],
}
/// A commitment_signed message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct CommitmentSigned {
/// The channel ID
pub channel_id: [u8; 32],
}
/// A revoke_and_ack message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct RevokeAndACK {
/// The channel ID
pub channel_id: [u8; 32],
}
/// An update_fee message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct UpdateFee {
/// The channel ID
pub channel_id: [u8; 32],
pub feerate_per_kw: u32,
}
-#[derive(Clone, Debug, PartialEq)]
+#[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
}
/// A channel_reestablish message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct ChannelReestablish {
/// The channel ID
pub channel_id: [u8; 32],
}
/// An announcement_signatures message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct AnnouncementSignatures {
/// The channel ID
pub channel_id: [u8; 32],
}
/// An address which can be used to connect to a remote peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub enum NetAddress {
/// An IPv4 address/port on which the peer is listening.
IPv4 {
/// The unsigned part of a node_announcement
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct UnsignedNodeAnnouncement {
/// The advertised features
pub features: NodeFeatures,
pub(crate) excess_address_data: Vec<u8>,
pub(crate) excess_data: Vec<u8>,
}
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
/// A node_announcement message to be sent or received from a peer
pub struct NodeAnnouncement {
/// The signature by the node key
}
/// The unsigned part of a channel_announcement
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct UnsignedChannelAnnouncement {
/// The advertised channel features
pub features: ChannelFeatures,
pub(crate) excess_data: Vec<u8>,
}
/// A channel_announcement message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct ChannelAnnouncement {
/// Authentication of the announcement by the first public node
pub node_signature_1: Signature,
}
/// The unsigned part of a channel_update
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct UnsignedChannelUpdate {
/// The genesis hash of the blockchain where the channel is to be opened
pub chain_hash: BlockHash,
pub excess_data: Vec<u8>,
}
/// A channel_update message to be sent or received from a peer
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct ChannelUpdate {
/// A signature of the channel update
pub signature: Signature,
/// UTXOs in a range of blocks. The recipient of a query makes a best
/// effort to reply to the query using one or more reply_channel_range
/// messages.
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct QueryChannelRange {
/// The genesis hash of the blockchain being queried
pub chain_hash: BlockHash,
/// not be a perfect view of the network. The short_channel_ids in the
/// reply are encoded. We only support encoding_type=0 uncompressed
/// serialization and do not support encoding_type=1 zlib serialization.
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct ReplyChannelRange {
/// The genesis hash of the blockchain being queried
pub chain_hash: BlockHash,
/// reply_short_channel_ids_end message. The short_channel_ids sent in
/// this query are encoded. We only support encoding_type=0 uncompressed
/// serialization and do not support encoding_type=1 zlib serialization.
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct QueryShortChannelIds {
/// The genesis hash of the blockchain being queried
pub chain_hash: BlockHash,
/// query_short_channel_ids message. The query recipient makes a best
/// effort to respond based on their local network view which may not be
/// a perfect view of the network.
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct ReplyShortChannelIdsEnd {
/// The genesis hash of the blockchain that was queried
pub chain_hash: BlockHash,
/// A gossip_timestamp_filter message is used by a node to request
/// gossip relay for messages in the requested time range when the
/// gossip_queries feature has been negotiated.
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct GossipTimestampFilter {
/// The genesis hash of the blockchain for channel and node information
pub chain_hash: BlockHash,
/// Struct used to return values from revoke_and_ack messages, containing a bunch of commitment
/// transaction updates if they were pending.
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub struct CommitmentUpdate {
/// update_add_htlc messages which should be sent
pub update_add_htlcs: Vec<UpdateAddHTLC>,
/// OptionalFeild simply gets Present if there are enough bytes to read into it), we have a
/// separate enum type for them.
/// (C-not exported) due to a free generic in T
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub enum OptionalField<T> {
/// Optional field is included in message
Present(T),
/// is believed to be possible in the future (eg they're sending us messages we don't
/// understand or indicate they require unknown feature bits), no_connection_possible is set
/// and any outstanding channels should be failed.
+ ///
+ /// Note that in some rare cases this may be called without a corresponding
+ /// [`Self::peer_connected`].
fn peer_disconnected(&self, their_node_id: &PublicKey, no_connection_possible: bool);
/// Handle a peer reconnecting, possibly generating channel_reestablish message(s).
- fn peer_connected(&self, their_node_id: &PublicKey, msg: &Init);
+ ///
+ /// May return an `Err(())` if the features the peer supports are not sufficient to communicate
+ /// with us. Implementors should be somewhat conservative about doing so, however, as other
+ /// message handlers may still wish to communicate with this peer.
+ fn peer_connected(&self, their_node_id: &PublicKey, msg: &Init) -> Result<(), ()>;
/// Handle an incoming channel_reestablish message from the given peer.
fn handle_channel_reestablish(&self, their_node_id: &PublicKey, msg: &ChannelReestablish);
// Error:
/// Handle an incoming error message from the given peer.
fn handle_error(&self, their_node_id: &PublicKey, msg: &ErrorMessage);
+
+ // Handler information:
+ /// Gets the node feature flags which this handler itself supports. All available handlers are
+ /// queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
+ /// which are broadcasted in our [`NodeAnnouncement`] message.
+ fn provided_node_features(&self) -> NodeFeatures;
+
+ /// Gets the init feature flags which should be sent to the given peer. All available handlers
+ /// are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
+ /// which are sent in our [`Init`] message.
+ ///
+ /// Note that this method is called before [`Self::peer_connected`].
+ fn provided_init_features(&self, their_node_id: &PublicKey) -> InitFeatures;
}
/// A trait to describe an object which can receive routing messages.
/// Handle an incoming channel_update message, returning true if it should be forwarded on,
/// false or returning an Err otherwise.
fn handle_channel_update(&self, msg: &ChannelUpdate) -> Result<bool, LightningError>;
- /// Gets a subset of the channel announcements and updates required to dump our routing table
- /// to a remote node, starting at the short_channel_id indicated by starting_point and
- /// including the batch_amount entries immediately higher in numerical value than starting_point.
- fn get_next_channel_announcements(&self, starting_point: u64, batch_amount: u8) -> Vec<(ChannelAnnouncement, Option<ChannelUpdate>, Option<ChannelUpdate>)>;
- /// Gets a subset of the node announcements required to dump our routing table to a remote node,
- /// starting at the node *after* the provided publickey and including batch_amount entries
- ///
immediately higher (as defined by <PublicKey as Ord>::cmp) than starting_point.
+ /// Gets channel announcements and updates required to dump our routing table to a remote node,
+ /// starting at the short_channel_id indicated by starting_point and including announcements
+ /// for a single channel.
+ fn get_next_channel_announcement(&self, starting_point: u64) -> Option<(ChannelAnnouncement, Option<ChannelUpdate>, Option<ChannelUpdate>)>;
+ /// Gets a node announcement required to dump our routing table to a remote node, starting at
+ /// the node *after* the provided pubkey and including up to one announcement immediately
+ /// higher (as defined by <PublicKey as Ord>::cmp) than starting_point.
/// If None is provided for starting_point, we start at the first node.
- fn get_next_node_announcements(&self, starting_point: Option<&PublicKey>, batch_amount: u8) -> Vec<NodeAnnouncement>;
+ fn get_next_node_announcement(&self, starting_point: Option<&PublicKey>) -> Option<NodeAnnouncement>;
/// Called when a connection is established with a peer. This can be used to
/// perform routing table synchronization using a strategy defined by the
/// implementor.
- fn peer_connected(&self, their_node_id: &PublicKey, init: &Init);
+ ///
+ /// May return an `Err(())` if the features the peer supports are not sufficient to communicate
+ /// with us. Implementors should be somewhat conservative about doing so, however, as other
+ /// message handlers may still wish to communicate with this peer.
+ fn peer_connected(&self, their_node_id: &PublicKey, init: &Init) -> Result<(), ()>;
/// Handles the reply of a query we initiated to learn about channels
/// for a given range of blocks. We can expect to receive one or more
/// replies to a single query.
/// Handles when a peer asks us to send routing gossip messages for a
/// list of short_channel_ids.
fn handle_query_short_channel_ids(&self, their_node_id: &PublicKey, msg: QueryShortChannelIds) -> Result<(), LightningError>;
+
+ // Handler information:
+ /// Gets the node feature flags which this handler itself supports. All available handlers are
+ /// queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
+ /// which are broadcasted in our [`NodeAnnouncement`] message.
+ fn provided_node_features(&self) -> NodeFeatures;
+ /// Gets the init feature flags which should be sent to the given peer. All available handlers
+ /// are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
+ /// which are sent in our [`Init`] message.
+ ///
+ /// Note that this method is called before [`Self::peer_connected`].
+ fn provided_init_features(&self, their_node_id: &PublicKey) -> InitFeatures;
+}
+
+/// A trait to describe an object that can receive onion messages.
+pub trait OnionMessageHandler : OnionMessageProvider {
+ /// Handle an incoming onion_message message from the given peer.
+ fn handle_onion_message(&self, peer_node_id: &PublicKey, msg: &OnionMessage);
+ /// Called when a connection is established with a peer. Can be used to track which peers
+ /// advertise onion message support and are online.
+ ///
+ /// May return an `Err(())` if the features the peer supports are not sufficient to communicate
+ /// with us. Implementors should be somewhat conservative about doing so, however, as other
+ /// message handlers may still wish to communicate with this peer.
+ fn peer_connected(&self, their_node_id: &PublicKey, init: &Init) -> Result<(), ()>;
+ /// Indicates a connection to the peer failed/an existing connection was lost. Allows handlers to
+ /// drop and refuse to forward onion messages to this peer.
+ ///
+ /// Note that in some rare cases this may be called without a corresponding
+ /// [`Self::peer_connected`].
+ fn peer_disconnected(&self, their_node_id: &PublicKey, no_connection_possible: bool);
+
+ // Handler information:
+ /// Gets the node feature flags which this handler itself supports. All available handlers are
+ /// queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`]
+ /// which are broadcasted in our [`NodeAnnouncement`] message.
+ fn provided_node_features(&self) -> NodeFeatures;
+
+ /// Gets the init feature flags which should be sent to the given peer. All available handlers
+ /// are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`]
+ /// which are sent in our [`Init`] message.
+ ///
+ /// Note that this method is called before [`Self::peer_connected`].
+ fn provided_init_features(&self, their_node_id: &PublicKey) -> InitFeatures;
}
mod fuzzy_internal_msgs {
}
}
+impl Eq for OnionPacket { }
impl PartialEq for OnionPacket {
fn eq(&self, other: &OnionPacket) -> bool {
for (i, j) in self.hop_data.iter().zip(other.hop_data.iter()) {
}
}
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
pub(crate) struct OnionErrorPacket {
// This really should be a constant size slice, but the spec lets these things be up to 128KB?
// (TODO) We limit it in decode to much lower...
let sig_2 = get_sig_on!(privkey_2, secp_ctx, String::from("01010101010101010101010101010101"));
let sig_3 = get_sig_on!(privkey_3, secp_ctx, String::from("01010101010101010101010101010101"));
let sig_4 = get_sig_on!(privkey_4, secp_ctx, String::from("01010101010101010101010101010101"));
- let mut features = ChannelFeatures::known();
+ let mut features = ChannelFeatures::empty();
if unknown_features_bits {
features = ChannelFeatures::from_le_bytes(vec![0xFF, 0xFF]);
}
projects / rust-lightning / blobdiff