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::{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::TestLogger>, Arc<TestCustomMessageHandler>>,
28 logger: Arc<test_utils::TestLogger>,
32 fn get_node_pk(&self) -> PublicKey {
33 let secp_ctx = Secp256k1::new();
34 PublicKey::from_secret_key(&secp_ctx, &self.keys_manager.get_node_secret(Recipient::Node).unwrap())
39 struct TestCustomMessage {}
41 const CUSTOM_MESSAGE_TYPE: u64 = 4242;
42 const CUSTOM_MESSAGE_CONTENTS: [u8; 32] = [42; 32];
44 impl CustomOnionMessageContents for TestCustomMessage {
45 fn tlv_type(&self) -> u64 {
50 impl Writeable for TestCustomMessage {
51 fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
52 Ok(CUSTOM_MESSAGE_CONTENTS.write(w)?)
56 struct TestCustomMessageHandler {}
58 impl CustomOnionMessageHandler for TestCustomMessageHandler {
59 type CustomMessage = TestCustomMessage;
60 fn handle_custom_message(&self, _msg: Self::CustomMessage) {}
61 fn read_custom_message<R: io::Read>(&self, message_type: u64, buffer: &mut R) -> Result<Option<Self::CustomMessage>, DecodeError> where Self: Sized {
62 if message_type == CUSTOM_MESSAGE_TYPE {
63 let mut buf = Vec::new();
64 buffer.read_to_end(&mut buf)?;
65 assert_eq!(buf, CUSTOM_MESSAGE_CONTENTS);
66 return Ok(Some(TestCustomMessage {}))
72 fn create_nodes(num_messengers: u8) -> Vec<MessengerNode> {
73 let mut nodes = Vec::new();
74 for i in 0..num_messengers {
75 let logger = Arc::new(test_utils::TestLogger::with_id(format!("node {}", i)));
76 let seed = [i as u8; 32];
77 let keys_manager = Arc::new(test_utils::TestKeysInterface::new(&seed, Network::Testnet));
78 nodes.push(MessengerNode {
79 keys_manager: keys_manager.clone(),
80 messenger: OnionMessenger::new(keys_manager, logger.clone(), Arc::new(TestCustomMessageHandler {})),
84 for idx in 0..num_messengers - 1 {
86 let mut features = InitFeatures::empty();
87 features.set_onion_messages_optional();
88 let init_msg = msgs::Init { features, remote_network_address: None };
89 nodes[i].messenger.peer_connected(&nodes[i + 1].get_node_pk(), &init_msg.clone()).unwrap();
90 nodes[i + 1].messenger.peer_connected(&nodes[i].get_node_pk(), &init_msg.clone()).unwrap();
95 fn pass_along_path(path: &Vec<MessengerNode>, expected_path_id: Option<[u8; 32]>) {
96 let mut prev_node = &path[0];
97 let num_nodes = path.len();
98 for (idx, node) in path.into_iter().skip(1).enumerate() {
99 let events = prev_node.messenger.release_pending_msgs();
101 let msgs = events.get(&node.get_node_pk()).unwrap();
102 assert_eq!(msgs.len(), 1);
105 node.messenger.handle_onion_message(&prev_node.get_node_pk(), &onion_msg);
106 if idx == num_nodes - 1 {
107 node.logger.assert_log_contains(
108 "lightning::onion_message::messenger".to_string(),
109 format!("Received an onion message with path_id: {:02x?}", expected_path_id).to_string(), 1);
117 let nodes = create_nodes(2);
118 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
120 nodes[0].messenger.send_onion_message(&[], Destination::Node(nodes[1].get_node_pk()), test_msg, None).unwrap();
121 pass_along_path(&nodes, None);
125 fn two_unblinded_hops() {
126 let nodes = create_nodes(3);
127 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
129 nodes[0].messenger.send_onion_message(&[nodes[1].get_node_pk()], Destination::Node(nodes[2].get_node_pk()), test_msg, None).unwrap();
130 pass_along_path(&nodes, None);
134 fn two_unblinded_two_blinded() {
135 let nodes = create_nodes(5);
136 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
138 let secp_ctx = Secp256k1::new();
139 let blinded_path = BlindedPath::new(&[nodes[3].get_node_pk(), nodes[4].get_node_pk()], &*nodes[4].keys_manager, &secp_ctx).unwrap();
141 nodes[0].messenger.send_onion_message(&[nodes[1].get_node_pk(), nodes[2].get_node_pk()], Destination::BlindedPath(blinded_path), test_msg, None).unwrap();
142 pass_along_path(&nodes, None);
146 fn three_blinded_hops() {
147 let nodes = create_nodes(4);
148 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
150 let secp_ctx = Secp256k1::new();
151 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();
153 nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), test_msg, None).unwrap();
154 pass_along_path(&nodes, None);
158 fn too_big_packet_error() {
159 // Make sure we error as expected if a packet is too big to send.
160 let nodes = create_nodes(2);
161 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
163 let hop_node_id = nodes[1].get_node_pk();
164 let hops = [hop_node_id; 400];
165 let err = nodes[0].messenger.send_onion_message(&hops, Destination::Node(hop_node_id), test_msg, None).unwrap_err();
166 assert_eq!(err, SendError::TooBigPacket);
170 fn we_are_intro_node() {
171 // If we are sending straight to a blinded path and we are the introduction node, we need to
172 // advance the blinded path by 1 hop so the second hop is the new introduction node.
173 let mut nodes = create_nodes(3);
174 let test_msg = TestCustomMessage {};
176 let secp_ctx = Secp256k1::new();
177 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();
179 nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg.clone()), None).unwrap();
180 pass_along_path(&nodes, None);
182 // Try with a two-hop blinded path where we are the introduction node.
183 let blinded_path = BlindedPath::new(&[nodes[0].get_node_pk(), nodes[1].get_node_pk()], &*nodes[1].keys_manager, &secp_ctx).unwrap();
184 nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg), None).unwrap();
186 pass_along_path(&nodes, None);
190 fn invalid_blinded_path_error() {
191 // Make sure we error as expected if a provided blinded path has 0 or 1 hops.
192 let nodes = create_nodes(3);
193 let test_msg = TestCustomMessage {};
196 let secp_ctx = Secp256k1::new();
197 let mut blinded_path = BlindedPath::new(&[nodes[1].get_node_pk(), nodes[2].get_node_pk()], &*nodes[2].keys_manager, &secp_ctx).unwrap();
198 blinded_path.blinded_hops.clear();
199 let err = nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg.clone()), None).unwrap_err();
200 assert_eq!(err, SendError::TooFewBlindedHops);
203 let mut blinded_path = BlindedPath::new(&[nodes[1].get_node_pk(), nodes[2].get_node_pk()], &*nodes[2].keys_manager, &secp_ctx).unwrap();
204 blinded_path.blinded_hops.remove(0);
205 assert_eq!(blinded_path.blinded_hops.len(), 1);
206 let err = nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg), None).unwrap_err();
207 assert_eq!(err, SendError::TooFewBlindedHops);
212 let nodes = create_nodes(4);
213 let test_msg = TestCustomMessage {};
214 let secp_ctx = Secp256k1::new();
217 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();
218 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();
219 pass_along_path(&nodes, None);
220 // Make sure the last node successfully decoded the reply path.
221 nodes[3].logger.assert_log_contains(
222 "lightning::onion_message::messenger".to_string(),
223 format!("Received an onion message with path_id None and a reply_path").to_string(), 1);
225 // Destination::BlindedPath
226 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();
227 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();
229 nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg), Some(reply_path)).unwrap();
230 pass_along_path(&nodes, None);
231 nodes[3].logger.assert_log_contains(
232 "lightning::onion_message::messenger".to_string(),
233 format!("Received an onion message with path_id None and a reply_path").to_string(), 2);
237 fn invalid_custom_message_type() {
238 let nodes = create_nodes(2);
240 struct InvalidCustomMessage{}
241 impl CustomOnionMessageContents for InvalidCustomMessage {
242 fn tlv_type(&self) -> u64 {
243 // Onion message contents must have a TLV >= 64.
248 impl Writeable for InvalidCustomMessage {
249 fn write<W: Writer>(&self, _w: &mut W) -> Result<(), io::Error> { unreachable!() }
252 let test_msg = OnionMessageContents::Custom(InvalidCustomMessage {});
253 let err = nodes[0].messenger.send_onion_message(&[], Destination::Node(nodes[1].get_node_pk()), test_msg, None).unwrap_err();
254 assert_eq!(err, SendError::InvalidMessage);
258 fn peer_buffer_full() {
259 let nodes = create_nodes(2);
260 let test_msg = TestCustomMessage {};
261 for _ in 0..188 { // Based on MAX_PER_PEER_BUFFER_SIZE in OnionMessenger
262 nodes[0].messenger.send_onion_message(&[], Destination::Node(nodes[1].get_node_pk()), OnionMessageContents::Custom(test_msg.clone()), None).unwrap();
264 let err = nodes[0].messenger.send_onion_message(&[], Destination::Node(nodes[1].get_node_pk()), OnionMessageContents::Custom(test_msg), None).unwrap_err();
265 assert_eq!(err, SendError::BufferFull);