X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fonion_message%2Fpacket.rs;h=fca7dd6a91ac6a1eda39e5519822c1c9101df78c;hb=5c7af8c6d32dd4bb2b307ba29c68667a15cb8509;hp=5ce02c54d08800b777a0c2c3a25f27ba1ffae462;hpb=f352d03ee98aed3d940e697fcb09371cfdc3ab15;p=rust-lightning

diff --git a/lightning/src/onion_message/packet.rs b/lightning/src/onion_message/packet.rs
index 5ce02c54..fca7dd6a 100644
--- a/lightning/src/onion_message/packet.rs
+++ b/lightning/src/onion_message/packet.rs
@@ -12,18 +12,21 @@
 use bitcoin::secp256k1::PublicKey;
 use bitcoin::secp256k1::ecdh::SharedSecret;
 
-use crate::blinded_path::BlindedPath;
+use crate::blinded_path::{BlindedPath, NextMessageHop};
 use crate::blinded_path::message::{ForwardTlvs, ReceiveTlvs};
 use crate::blinded_path::utils::Padding;
 use crate::ln::msgs::DecodeError;
 use crate::ln::onion_utils;
+#[cfg(async_payments)]
+use super::async_payments::AsyncPaymentsMessage;
 use super::messenger::CustomOnionMessageHandler;
 use super::offers::OffersMessage;
-use crate::util::chacha20poly1305rfc::{ChaChaPolyReadAdapter, ChaChaPolyWriteAdapter};
+use crate::crypto::streams::{ChaChaPolyReadAdapter, ChaChaPolyWriteAdapter};
 use crate::util::logger::Logger;
 use crate::util::ser::{BigSize, FixedLengthReader, LengthRead, LengthReadable, LengthReadableArgs, Readable, ReadableArgs, Writeable, Writer};
 
 use core::cmp;
+use core::fmt;
 use crate::io::{self, Read};
 use crate::prelude::*;
 
@@ -33,7 +36,7 @@ pub(super) const SMALL_PACKET_HOP_DATA_LEN: usize = 1300;
 pub(super) const BIG_PACKET_HOP_DATA_LEN: usize = 32768;
 
 /// Packet of hop data for next peer
-#[derive(Clone, Debug, Hash, PartialEq, Eq)]
+#[derive(Clone, Hash, PartialEq, Eq)]
 pub struct Packet {
 	/// Bolt 04 version number
 	pub version: u8,
@@ -62,6 +65,12 @@ impl onion_utils::Packet for Packet {
 	}
 }
 
+impl fmt::Debug for Packet {
+	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+		f.write_fmt(format_args!("Onion message packet version {} with hmac {:?}", self.version, &self.hmac[..]))
+	}
+}
+
 impl Writeable for Packet {
 	fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
 		self.version.write(w)?;
@@ -117,10 +126,13 @@ pub(super) enum Payload<T: OnionMessageContents> {
 /// The contents of an [`OnionMessage`] as read from the wire.
 ///
 /// [`OnionMessage`]: crate::ln::msgs::OnionMessage
-#[derive(Debug)]
+#[derive(Clone, Debug)]
 pub enum ParsedOnionMessageContents<T: OnionMessageContents> {
 	/// A message related to BOLT 12 Offers.
 	Offers(OffersMessage),
+	/// A message related to async payments.
+	#[cfg(async_payments)]
+	AsyncPayments(AsyncPaymentsMessage),
 	/// A custom onion message specified by the user.
 	Custom(T),
 }
@@ -132,15 +144,27 @@ impl<T: OnionMessageContents> OnionMessageContents for ParsedOnionMessageContent
 	fn tlv_type(&self) -> u64 {
 		match self {
 			&ParsedOnionMessageContents::Offers(ref msg) => msg.tlv_type(),
+			#[cfg(async_payments)]
+			&ParsedOnionMessageContents::AsyncPayments(ref msg) => msg.tlv_type(),
 			&ParsedOnionMessageContents::Custom(ref msg) => msg.tlv_type(),
 		}
 	}
+	fn msg_type(&self) -> &'static str {
+		match self {
+			ParsedOnionMessageContents::Offers(ref msg) => msg.msg_type(),
+			#[cfg(async_payments)]
+			ParsedOnionMessageContents::AsyncPayments(ref msg) => msg.msg_type(),
+			ParsedOnionMessageContents::Custom(ref msg) => msg.msg_type(),
+		}
+	}
 }
 
 impl<T: OnionMessageContents> Writeable for ParsedOnionMessageContents<T> {
 	fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
 		match self {
 			ParsedOnionMessageContents::Offers(msg) => Ok(msg.write(w)?),
+			#[cfg(async_payments)]
+			ParsedOnionMessageContents::AsyncPayments(msg) => Ok(msg.write(w)?),
 			ParsedOnionMessageContents::Custom(msg) => Ok(msg.write(w)?),
 		}
 	}
@@ -150,6 +174,9 @@ impl<T: OnionMessageContents> Writeable for ParsedOnionMessageContents<T> {
 pub trait OnionMessageContents: Writeable + core::fmt::Debug {
 	/// Returns the TLV type identifying the message contents. MUST be >= 64.
 	fn tlv_type(&self) -> u64;
+
+	/// Returns the message type
+	fn msg_type(&self) -> &'static str;
 }
 
 /// Forward control TLVs in their blinded and unblinded form.
@@ -239,6 +266,12 @@ for Payload<ParsedOnionMessageContents<<H as CustomOnionMessageHandler>::CustomM
 					message = Some(ParsedOnionMessageContents::Offers(msg));
 					Ok(true)
 				},
+				#[cfg(async_payments)]
+				tlv_type if AsyncPaymentsMessage::is_known_type(tlv_type) => {
+					let msg = AsyncPaymentsMessage::read(msg_reader, tlv_type)?;
+					message = Some(ParsedOnionMessageContents::AsyncPayments(msg));
+					Ok(true)
+				},
 				_ => match handler.read_custom_message(msg_type, msg_reader)? {
 					Some(msg) => {
 						message = Some(ParsedOnionMessageContents::Custom(msg));
@@ -284,20 +317,26 @@ impl Readable for ControlTlvs {
 	fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
 		_init_and_read_tlv_stream!(r, {
 			(1, _padding, option),
-			(2, _short_channel_id, option),
+			(2, short_channel_id, option),
 			(4, next_node_id, option),
 			(6, path_id, option),
 			(8, next_blinding_override, option),
 		});
 		let _padding: Option<Padding> = _padding;
-		let _short_channel_id: Option<u64> = _short_channel_id;
 
-		let valid_fwd_fmt  = next_node_id.is_some() && path_id.is_none();
-		let valid_recv_fmt = next_node_id.is_none() && next_blinding_override.is_none();
+		let next_hop = match (short_channel_id, next_node_id) {
+			(Some(_), Some(_)) => return Err(DecodeError::InvalidValue),
+			(Some(scid), None) => Some(NextMessageHop::ShortChannelId(scid)),
+			(None, Some(pubkey)) => Some(NextMessageHop::NodeId(pubkey)),
+			(None, None) => None,
+		};
+
+		let valid_fwd_fmt = next_hop.is_some() && path_id.is_none();
+		let valid_recv_fmt = next_hop.is_none() && next_blinding_override.is_none();
 
 		let payload_fmt = if valid_fwd_fmt {
 			ControlTlvs::Forward(ForwardTlvs {
-				next_node_id: next_node_id.unwrap(),
+				next_hop: next_hop.unwrap(),
 				next_blinding_override,
 			})
 		} else if valid_recv_fmt {