use bitcoin::secp256k1::PublicKey;
use bitcoin::secp256k1::ecdh::SharedSecret;
+use crate::blinded_path::{BlindedPath, ForwardTlvs, ReceiveTlvs};
use crate::ln::msgs::DecodeError;
use crate::ln::onion_utils;
-use super::blinded_route::{BlindedRoute, ForwardTlvs, ReceiveTlvs};
+use super::messenger::CustomOnionMessageHandler;
use crate::util::chacha20poly1305rfc::{ChaChaPolyReadAdapter, ChaChaPolyWriteAdapter};
-use crate::util::ser::{BigSize, FixedLengthReader, LengthRead, LengthReadable, LengthReadableArgs, MaybeReadableArgs, Readable, ReadableArgs, Writeable, Writer};
+use crate::util::ser::{BigSize, FixedLengthReader, LengthRead, LengthReadable, LengthReadableArgs, Readable, ReadableArgs, Writeable, Writer};
use core::cmp;
use crate::io::{self, Read};
/// This payload is for the final hop.
Receive {
control_tlvs: ReceiveControlTlvs,
- reply_path: Option<BlindedRoute>,
+ reply_path: Option<BlindedPath>,
message: OnionMessageContents<T>,
}
}
#[derive(Debug)]
/// The contents of an onion message. In the context of offers, this would be the invoice, invoice
/// request, or invoice error.
-pub enum OnionMessageContents<T> where T: CustomOnionMessageContents {
+pub enum OnionMessageContents<T: CustomOnionMessageContents> {
// Coming soon:
// Invoice,
// InvoiceRequest,
Custom(T),
}
-impl<T> OnionMessageContents<T> where T: CustomOnionMessageContents {
+impl<T: CustomOnionMessageContents> OnionMessageContents<T> {
/// Returns the type that was used to decode the message payload.
+ ///
+ /// This is not exported to bindings users as methods on non-cloneable enums are not currently exportable
pub fn tlv_type(&self) -> u64 {
match self {
&OnionMessageContents::Custom(ref msg) => msg.tlv_type(),
}
}
+/// This is not exported to bindings users as methods on non-cloneable enums are not currently exportable
impl<T: CustomOnionMessageContents> Writeable for OnionMessageContents<T> {
fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
match self {
}
}
-/// The contents of a custom onion message. Must implement `MaybeReadableArgs<u64>` where the `u64`
-/// is the custom TLV type attempting to be read, and return `Ok(None)` if the TLV type is unknown.
-pub trait CustomOnionMessageContents: Writeable + MaybeReadableArgs<u64> {
+/// The contents of a custom onion message.
+pub trait CustomOnionMessageContents: Writeable {
/// Returns the TLV type identifying the message contents. MUST be >= 64.
fn tlv_type(&self) -> u64;
}
/// Forward control TLVs in their blinded and unblinded form.
pub(super) enum ForwardControlTlvs {
- /// If we're sending to a blinded route, the node that constructed the blinded route has provided
+ /// If we're sending to a blinded path, the node that constructed the blinded path has provided
/// this hop's control TLVs, already encrypted into bytes.
Blinded(Vec<u8>),
/// If we're constructing an onion message hop through an intermediate unblinded node, we'll need
/// to construct the intermediate hop's control TLVs in their unblinded state to avoid encoding
- /// them into an intermediate Vec. See [`super::blinded_route::ForwardTlvs`] for more info.
+ /// them into an intermediate Vec. See [`crate::blinded_path::ForwardTlvs`] for more info.
Unblinded(ForwardTlvs),
}
pub(super) enum ReceiveControlTlvs {
/// See [`ForwardControlTlvs::Blinded`].
Blinded(Vec<u8>),
- /// See [`ForwardControlTlvs::Unblinded`] and [`super::blinded_route::ReceiveTlvs`].
+ /// See [`ForwardControlTlvs::Unblinded`] and [`crate::blinded_path::ReceiveTlvs`].
Unblinded(ReceiveTlvs),
}
fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
match &self.0 {
Payload::Forward(ForwardControlTlvs::Blinded(encrypted_bytes)) => {
- encode_varint_length_prefixed_tlv!(w, {
- (4, encrypted_bytes, vec_type)
+ _encode_varint_length_prefixed_tlv!(w, {
+ (4, *encrypted_bytes, vec_type)
})
},
Payload::Receive {
control_tlvs: ReceiveControlTlvs::Blinded(encrypted_bytes), reply_path, message,
} => {
- encode_varint_length_prefixed_tlv!(w, {
+ _encode_varint_length_prefixed_tlv!(w, {
(2, reply_path, option),
- (4, encrypted_bytes, vec_type),
+ (4, *encrypted_bytes, vec_type),
(message.tlv_type(), message, required)
})
},
Payload::Forward(ForwardControlTlvs::Unblinded(control_tlvs)) => {
let write_adapter = ChaChaPolyWriteAdapter::new(self.1, &control_tlvs);
- encode_varint_length_prefixed_tlv!(w, {
+ _encode_varint_length_prefixed_tlv!(w, {
(4, write_adapter, required)
})
},
control_tlvs: ReceiveControlTlvs::Unblinded(control_tlvs), reply_path, message,
} => {
let write_adapter = ChaChaPolyWriteAdapter::new(self.1, &control_tlvs);
- encode_varint_length_prefixed_tlv!(w, {
+ _encode_varint_length_prefixed_tlv!(w, {
(2, reply_path, option),
(4, write_adapter, required),
(message.tlv_type(), message, required)
}
// Uses the provided secret to simultaneously decode and decrypt the control TLVs and data TLV.
-impl<T: CustomOnionMessageContents> ReadableArgs<SharedSecret> for Payload<T> {
- fn read<R: Read>(r: &mut R, encrypted_tlvs_ss: SharedSecret) -> Result<Self, DecodeError> {
+impl<H: CustomOnionMessageHandler> ReadableArgs<(SharedSecret, &H)> for Payload<<H as CustomOnionMessageHandler>::CustomMessage> {
+ fn read<R: Read>(r: &mut R, args: (SharedSecret, &H)) -> Result<Self, DecodeError> {
+ let (encrypted_tlvs_ss, handler) = args;
+
let v: BigSize = Readable::read(r)?;
let mut rd = FixedLengthReader::new(r, v.0);
- let mut reply_path: Option<BlindedRoute> = None;
+ let mut reply_path: Option<BlindedPath> = None;
let mut read_adapter: Option<ChaChaPolyReadAdapter<ControlTlvs>> = None;
let rho = onion_utils::gen_rho_from_shared_secret(&encrypted_tlvs_ss.secret_bytes());
let mut message_type: Option<u64> = None;
let mut message = None;
- decode_tlv_stream!(&mut rd, {
+ decode_tlv_stream_with_custom_tlv_decode!(&mut rd, {
(2, reply_path, option),
(4, read_adapter, (option: LengthReadableArgs, rho)),
}, |msg_type, msg_reader| {
if message_type.is_some() { return Err(DecodeError::InvalidValue) }
message_type = Some(msg_type);
- match T::read(msg_reader, msg_type) {
+ match handler.read_custom_message(msg_type, msg_reader) {
Ok(Some(msg)) => {
message = Some(msg);
Ok(true)
/// When reading a packet off the wire, we don't know a priori whether the packet is to be forwarded
/// or received. Thus we read a ControlTlvs rather than reading a ForwardControlTlvs or
/// ReceiveControlTlvs directly.
-pub(super) enum ControlTlvs {
+pub(crate) enum ControlTlvs {
/// This onion message is intended to be forwarded.
Forward(ForwardTlvs),
/// This onion message is intended to be received.
projects / rust-lightning / blobdiff