1 // This file is Copyright its original authors, visible in version control
4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
7 // You may not use this file except in accordance with one or both of these
10 //! Onion message testing and test utilities live here.
12 use crate::chain::keysinterface::{NodeSigner, Recipient};
13 use crate::ln::features::InitFeatures;
14 use crate::ln::msgs::{self, DecodeError, OnionMessageHandler};
15 use super::{BlindedPath, CustomOnionMessageContents, CustomOnionMessageHandler, Destination, OnionMessageContents, OnionMessenger, SendError};
16 use crate::util::ser::{Writeable, Writer};
17 use crate::util::test_utils;
19 use bitcoin::network::constants::Network;
20 use bitcoin::secp256k1::{PublicKey, Secp256k1};
25 struct MessengerNode {
26 keys_manager: Arc<test_utils::TestKeysInterface>,
27 messenger: OnionMessenger<Arc<test_utils::TestKeysInterface>, Arc<test_utils::TestKeysInterface>, Arc<test_utils::TestLogger>, Arc<TestCustomMessageHandler>>,
28 logger: Arc<test_utils::TestLogger>,
32 fn get_node_pk(&self) -> PublicKey {
33 self.keys_manager.get_node_id(Recipient::Node).unwrap()
38 struct TestCustomMessage {}
40 const CUSTOM_MESSAGE_TYPE: u64 = 4242;
41 const CUSTOM_MESSAGE_CONTENTS: [u8; 32] = [42; 32];
43 impl CustomOnionMessageContents for TestCustomMessage {
44 fn tlv_type(&self) -> u64 {
49 impl Writeable for TestCustomMessage {
50 fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
51 Ok(CUSTOM_MESSAGE_CONTENTS.write(w)?)
55 struct TestCustomMessageHandler {}
57 impl CustomOnionMessageHandler for TestCustomMessageHandler {
58 type CustomMessage = TestCustomMessage;
59 fn handle_custom_message(&self, _msg: Self::CustomMessage) {}
60 fn read_custom_message<R: io::Read>(&self, message_type: u64, buffer: &mut R) -> Result<Option<Self::CustomMessage>, DecodeError> where Self: Sized {
61 if message_type == CUSTOM_MESSAGE_TYPE {
62 let mut buf = Vec::new();
63 buffer.read_to_end(&mut buf)?;
64 assert_eq!(buf, CUSTOM_MESSAGE_CONTENTS);
65 return Ok(Some(TestCustomMessage {}))
71 fn create_nodes(num_messengers: u8) -> Vec<MessengerNode> {
72 let mut nodes = Vec::new();
73 for i in 0..num_messengers {
74 let logger = Arc::new(test_utils::TestLogger::with_id(format!("node {}", i)));
75 let seed = [i as u8; 32];
76 let keys_manager = Arc::new(test_utils::TestKeysInterface::new(&seed, Network::Testnet));
77 nodes.push(MessengerNode {
78 keys_manager: keys_manager.clone(),
79 messenger: OnionMessenger::new(keys_manager.clone(), keys_manager.clone(), logger.clone(), Arc::new(TestCustomMessageHandler {})),
83 for idx in 0..num_messengers - 1 {
85 let mut features = InitFeatures::empty();
86 features.set_onion_messages_optional();
87 let init_msg = msgs::Init { features, remote_network_address: None };
88 nodes[i].messenger.peer_connected(&nodes[i + 1].get_node_pk(), &init_msg.clone()).unwrap();
89 nodes[i + 1].messenger.peer_connected(&nodes[i].get_node_pk(), &init_msg.clone()).unwrap();
94 fn pass_along_path(path: &Vec<MessengerNode>, expected_path_id: Option<[u8; 32]>) {
95 let mut prev_node = &path[0];
96 let num_nodes = path.len();
97 for (idx, node) in path.into_iter().skip(1).enumerate() {
98 let events = prev_node.messenger.release_pending_msgs();
100 let msgs = events.get(&node.get_node_pk()).unwrap();
101 assert_eq!(msgs.len(), 1);
104 node.messenger.handle_onion_message(&prev_node.get_node_pk(), &onion_msg);
105 if idx == num_nodes - 1 {
106 node.logger.assert_log_contains(
107 "lightning::onion_message::messenger".to_string(),
108 format!("Received an onion message with path_id: {:02x?}", expected_path_id).to_string(), 1);
116 let nodes = create_nodes(2);
117 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
119 nodes[0].messenger.send_onion_message(&[], Destination::Node(nodes[1].get_node_pk()), test_msg, None).unwrap();
120 pass_along_path(&nodes, None);
124 fn two_unblinded_hops() {
125 let nodes = create_nodes(3);
126 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
128 nodes[0].messenger.send_onion_message(&[nodes[1].get_node_pk()], Destination::Node(nodes[2].get_node_pk()), test_msg, None).unwrap();
129 pass_along_path(&nodes, None);
133 fn two_unblinded_two_blinded() {
134 let nodes = create_nodes(5);
135 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
137 let secp_ctx = Secp256k1::new();
138 let blinded_path = BlindedPath::new(&[nodes[3].get_node_pk(), nodes[4].get_node_pk()], &*nodes[4].keys_manager, &secp_ctx).unwrap();
140 nodes[0].messenger.send_onion_message(&[nodes[1].get_node_pk(), nodes[2].get_node_pk()], Destination::BlindedPath(blinded_path), test_msg, None).unwrap();
141 pass_along_path(&nodes, None);
145 fn three_blinded_hops() {
146 let nodes = create_nodes(4);
147 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
149 let secp_ctx = Secp256k1::new();
150 let blinded_path = BlindedPath::new(&[nodes[1].get_node_pk(), nodes[2].get_node_pk(), nodes[3].get_node_pk()], &*nodes[3].keys_manager, &secp_ctx).unwrap();
152 nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), test_msg, None).unwrap();
153 pass_along_path(&nodes, None);
157 fn too_big_packet_error() {
158 // Make sure we error as expected if a packet is too big to send.
159 let nodes = create_nodes(2);
160 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
162 let hop_node_id = nodes[1].get_node_pk();
163 let hops = [hop_node_id; 400];
164 let err = nodes[0].messenger.send_onion_message(&hops, Destination::Node(hop_node_id), test_msg, None).unwrap_err();
165 assert_eq!(err, SendError::TooBigPacket);
169 fn we_are_intro_node() {
170 // If we are sending straight to a blinded path and we are the introduction node, we need to
171 // advance the blinded path by 1 hop so the second hop is the new introduction node.
172 let mut nodes = create_nodes(3);
173 let test_msg = TestCustomMessage {};
175 let secp_ctx = Secp256k1::new();
176 let blinded_path = BlindedPath::new(&[nodes[0].get_node_pk(), nodes[1].get_node_pk(), nodes[2].get_node_pk()], &*nodes[2].keys_manager, &secp_ctx).unwrap();
178 nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg.clone()), None).unwrap();
179 pass_along_path(&nodes, None);
181 // Try with a two-hop blinded path where we are the introduction node.
182 let blinded_path = BlindedPath::new(&[nodes[0].get_node_pk(), nodes[1].get_node_pk()], &*nodes[1].keys_manager, &secp_ctx).unwrap();
183 nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg), None).unwrap();
185 pass_along_path(&nodes, None);
189 fn invalid_blinded_path_error() {
190 // Make sure we error as expected if a provided blinded path has 0 or 1 hops.
191 let nodes = create_nodes(3);
192 let test_msg = TestCustomMessage {};
195 let secp_ctx = Secp256k1::new();
196 let mut blinded_path = BlindedPath::new(&[nodes[1].get_node_pk(), nodes[2].get_node_pk()], &*nodes[2].keys_manager, &secp_ctx).unwrap();
197 blinded_path.blinded_hops.clear();
198 let err = nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg.clone()), None).unwrap_err();
199 assert_eq!(err, SendError::TooFewBlindedHops);
202 let mut blinded_path = BlindedPath::new(&[nodes[1].get_node_pk(), nodes[2].get_node_pk()], &*nodes[2].keys_manager, &secp_ctx).unwrap();
203 blinded_path.blinded_hops.remove(0);
204 assert_eq!(blinded_path.blinded_hops.len(), 1);
205 let err = nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg), None).unwrap_err();
206 assert_eq!(err, SendError::TooFewBlindedHops);
211 let nodes = create_nodes(4);
212 let test_msg = TestCustomMessage {};
213 let secp_ctx = Secp256k1::new();
216 let reply_path = BlindedPath::new(&[nodes[2].get_node_pk(), nodes[1].get_node_pk(), nodes[0].get_node_pk()], &*nodes[0].keys_manager, &secp_ctx).unwrap();
217 nodes[0].messenger.send_onion_message(&[nodes[1].get_node_pk(), nodes[2].get_node_pk()], Destination::Node(nodes[3].get_node_pk()), OnionMessageContents::Custom(test_msg.clone()), Some(reply_path)).unwrap();
218 pass_along_path(&nodes, None);
219 // Make sure the last node successfully decoded the reply path.
220 nodes[3].logger.assert_log_contains(
221 "lightning::onion_message::messenger".to_string(),
222 format!("Received an onion message with path_id None and a reply_path").to_string(), 1);
224 // Destination::BlindedPath
225 let blinded_path = BlindedPath::new(&[nodes[1].get_node_pk(), nodes[2].get_node_pk(), nodes[3].get_node_pk()], &*nodes[3].keys_manager, &secp_ctx).unwrap();
226 let reply_path = BlindedPath::new(&[nodes[2].get_node_pk(), nodes[1].get_node_pk(), nodes[0].get_node_pk()], &*nodes[0].keys_manager, &secp_ctx).unwrap();
228 nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg), Some(reply_path)).unwrap();
229 pass_along_path(&nodes, None);
230 nodes[3].logger.assert_log_contains(
231 "lightning::onion_message::messenger".to_string(),
232 format!("Received an onion message with path_id None and a reply_path").to_string(), 2);
236 fn invalid_custom_message_type() {
237 let nodes = create_nodes(2);
239 struct InvalidCustomMessage{}
240 impl CustomOnionMessageContents for InvalidCustomMessage {
241 fn tlv_type(&self) -> u64 {
242 // Onion message contents must have a TLV >= 64.
247 impl Writeable for InvalidCustomMessage {
248 fn write<W: Writer>(&self, _w: &mut W) -> Result<(), io::Error> { unreachable!() }
251 let test_msg = OnionMessageContents::Custom(InvalidCustomMessage {});
252 let err = nodes[0].messenger.send_onion_message(&[], Destination::Node(nodes[1].get_node_pk()), test_msg, None).unwrap_err();
253 assert_eq!(err, SendError::InvalidMessage);
257 fn peer_buffer_full() {
258 let nodes = create_nodes(2);
259 let test_msg = TestCustomMessage {};
260 for _ in 0..188 { // Based on MAX_PER_PEER_BUFFER_SIZE in OnionMessenger
261 nodes[0].messenger.send_onion_message(&[], Destination::Node(nodes[1].get_node_pk()), OnionMessageContents::Custom(test_msg.clone()), None).unwrap();
263 let err = nodes[0].messenger.send_onion_message(&[], Destination::Node(nodes[1].get_node_pk()), OnionMessageContents::Custom(test_msg), None).unwrap_err();
264 assert_eq!(err, SendError::BufferFull);