Use NodeAlias type in NodeAnnouncement

Author: benthecarman

lightning/src/ln/msgs.rs

@@ -46,7 +46,7 @@ use crate::util::ser::{LengthReadable, Readable, ReadableArgs, Writeable, Writer
 
 use crate::ln::{PaymentPreimage, PaymentHash, PaymentSecret};
 
-use crate::routing::gossip::NodeId;
+use crate::routing::gossip::{NodeAlias, NodeId};
 
 /// 21 million * 10^8 * 1000
 pub(crate) const MAX_VALUE_MSAT: u64 = 21_000_000_0000_0000_000;
@@ -694,7 +694,7 @@ pub struct UnsignedNodeAnnouncement {
 	/// An alias, for UI purposes.
 	///
 	/// This should be sanitized before use. There is no guarantee of uniqueness.
-	pub alias: [u8; 32],
+	pub alias: NodeAlias,
 	/// List of addresses on which this node is reachable
 	pub addresses: Vec<NetAddress>,
 	pub(crate) excess_address_data: Vec<u8>,
@@ -1931,7 +1931,7 @@ impl Readable for UnsignedNodeAnnouncement {
 		let node_id: NodeId = Readable::read(r)?;
 		let mut rgb = [0; 3];
 		r.read_exact(&mut rgb)?;
-		let alias: [u8; 32] = Readable::read(r)?;
+		let alias: NodeAlias = Readable::read(r)?;
 
 		let addr_len: u16 = Readable::read(r)?;
 		let mut addresses: Vec<NetAddress> = Vec::new();
@@ -2138,7 +2138,7 @@ mod tests {
 	use crate::ln::features::{ChannelFeatures, ChannelTypeFeatures, InitFeatures, NodeFeatures};
 	use crate::ln::msgs;
 	use crate::ln::msgs::{FinalOnionHopData, OptionalField, OnionErrorPacket, OnionHopDataFormat};
-	use crate::routing::gossip::NodeId;
+	use crate::routing::gossip::{NodeAlias, NodeId};
 	use crate::util::ser::{Writeable, Readable, Hostname};
 
 	use bitcoin::hashes::hex::FromHex;
@@ -2333,7 +2333,7 @@ mod tests {
 			timestamp: 20190119,
 			node_id: NodeId::from_pubkey(&pubkey_1),
 			rgb: [32; 3],
-			alias: [16;32],
+			alias: NodeAlias([16;32]),
 			addresses,
 			excess_address_data: if excess_address_data { vec![33, 108, 40, 11, 83, 149, 162, 84, 110, 126, 75, 38, 99, 224, 79, 129, 22, 34, 241, 90, 79, 146, 232, 58, 162, 233, 43, 162, 165, 115, 193, 57, 20, 44, 84, 174, 99, 7, 42, 30, 193, 238, 125, 192, 192, 75, 222, 92, 132, 120, 6, 23, 42, 160, 92, 146, 194, 42, 232, 227, 8, 209, 210, 105] } else { Vec::new() },
 			excess_data: if excess_data { vec![59, 18, 204, 25, 92, 224, 162, 209, 189, 166, 168, 139, 239, 161, 159, 160, 127, 81, 202, 167, 92, 232, 56, 55, 242, 137, 101, 96, 11, 138, 172, 171, 8, 85, 255, 176, 231, 65, 236, 95, 124, 65, 66, 30, 152, 41, 169, 212, 134, 17, 200, 200, 49, 247, 27, 229, 234, 115, 230, 101, 148, 151, 127, 253] } else { Vec::new() },

lightning/src/ln/peer_handler.rs

@@ -28,7 +28,7 @@ use crate::ln::peer_channel_encryptor::{PeerChannelEncryptor,NextNoiseStep};
 use crate::ln::wire;
 use crate::ln::wire::Encode;
 use crate::onion_message::{CustomOnionMessageContents, CustomOnionMessageHandler, SimpleArcOnionMessenger, SimpleRefOnionMessenger};
-use crate::routing::gossip::{NetworkGraph, P2PGossipSync, NodeId};
+use crate::routing::gossip::{NetworkGraph, P2PGossipSync, NodeId, NodeAlias};
 use crate::util::atomic_counter::AtomicCounter;
 use crate::util::logger::Logger;
 
@@ -2153,7 +2153,9 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 			features,
 			timestamp: self.last_node_announcement_serial.fetch_add(1, Ordering::AcqRel),
 			node_id: NodeId::from_pubkey(&self.node_signer.get_node_id(Recipient::Node).unwrap()),
-			rgb, alias, addresses,
+			rgb,
+			alias: NodeAlias(alias),
+			addresses,
 			excess_address_data: Vec::new(),
 			excess_data: Vec::new(),
 		};

lightning/src/routing/gossip.rs

@@ -1103,7 +1103,7 @@ impl Readable for NodeAnnouncementInfo {
 ///
 /// Since node aliases are provided by third parties, they are a potential avenue for injection
 /// attacks. Care must be taken when processing.
-#[derive(Clone, Debug, PartialEq, Eq)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub struct NodeAlias(pub [u8; 32]);
 
 impl fmt::Display for NodeAlias {
@@ -1396,7 +1396,7 @@ impl<L: Deref> NetworkGraph<L> where L::Target: Logger {
 					features: msg.features.clone(),
 					last_update: msg.timestamp,
 					rgb: msg.rgb,
-					alias: NodeAlias(msg.alias),
+					alias: msg.alias,
 					announcement_message: if should_relay { full_msg.cloned() } else { None },
 				});
 
@@ -2029,7 +2029,7 @@ pub(crate) mod tests {
 			timestamp: 100,
 			node_id,
 			rgb: [0; 3],
-			alias: [0; 32],
+			alias: NodeAlias([0; 32]),
 			addresses: Vec::new(),
 			excess_address_data: Vec::new(),
 			excess_data: Vec::new(),

lightning/src/routing/test_utils.rs

@@ -7,7 +7,7 @@
 // You may not use this file except in accordance with one or both of these
 // licenses.
 
-use crate::routing::gossip::{NetworkGraph, P2PGossipSync};
+use crate::routing::gossip::{NetworkGraph, NodeAlias, P2PGossipSync};
 use crate::ln::features::{ChannelFeatures, NodeFeatures};
 use crate::ln::msgs::{UnsignedChannelAnnouncement, ChannelAnnouncement, RoutingMessageHandler,
 	NodeAnnouncement, UnsignedNodeAnnouncement, ChannelUpdate, UnsignedChannelUpdate, MAX_VALUE_MSAT};
@@ -72,7 +72,7 @@ pub(super) fn add_or_update_node(
 		timestamp,
 		node_id,
 		rgb: [0; 3],
-		alias: [0; 32],
+		alias: NodeAlias([0; 32]),
 		addresses: Vec::new(),
 		excess_address_data: Vec::new(),
 		excess_data: Vec::new(),