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 //! Test that monitor update failures don't get our channel state out of sync.
11 //! One of the biggest concern with the monitor update failure handling code is that messages
12 //! resent after monitor updating is restored are delivered out-of-order, resulting in
13 //! commitment_signed messages having "invalid signatures".
14 //! To test this we stand up a network of three nodes and read bytes from the fuzz input to denote
15 //! actions such as sending payments, handling events, or changing monitor update return values on
16 //! a per-node basis. This should allow it to find any cases where the ordering of actions results
17 //! in us getting out of sync with ourselves, and, assuming at least one of our recieve- or
18 //! send-side handling is correct, other peers. We consider it a failure if any action results in a
19 //! channel being force-closed.
21 use bitcoin::TxMerkleNode;
22 use bitcoin::blockdata::block::BlockHeader;
23 use bitcoin::blockdata::constants::genesis_block;
24 use bitcoin::blockdata::transaction::{Transaction, TxOut};
25 use bitcoin::blockdata::script::{Builder, Script};
26 use bitcoin::blockdata::opcodes;
27 use bitcoin::blockdata::locktime::PackedLockTime;
28 use bitcoin::network::constants::Network;
30 use bitcoin::hashes::Hash as TraitImport;
31 use bitcoin::hashes::sha256::Hash as Sha256;
32 use bitcoin::hash_types::{BlockHash, WPubkeyHash};
35 use lightning::chain::{BestBlock, ChannelMonitorUpdateStatus, chainmonitor, channelmonitor, Confirm, Watch};
36 use lightning::chain::channelmonitor::{ChannelMonitor, MonitorEvent};
37 use lightning::chain::transaction::OutPoint;
38 use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
39 use lightning::chain::keysinterface::{KeyMaterial, KeysInterface, InMemorySigner, Recipient};
40 use lightning::ln::{PaymentHash, PaymentPreimage, PaymentSecret};
41 use lightning::ln::channelmanager::{self, ChainParameters, ChannelManager, PaymentSendFailure, ChannelManagerReadArgs};
42 use lightning::ln::channel::FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE;
43 use lightning::ln::msgs::{CommitmentUpdate, ChannelMessageHandler, DecodeError, UpdateAddHTLC, Init};
44 use lightning::ln::script::ShutdownScript;
45 use lightning::util::enforcing_trait_impls::{EnforcingSigner, EnforcementState};
46 use lightning::util::errors::APIError;
47 use lightning::util::events;
48 use lightning::util::logger::Logger;
49 use lightning::util::config::UserConfig;
50 use lightning::util::events::MessageSendEventsProvider;
51 use lightning::util::ser::{Readable, ReadableArgs, Writeable, Writer};
52 use lightning::routing::router::{Route, RouteHop};
54 use crate::utils::test_logger::{self, Output};
55 use crate::utils::test_persister::TestPersister;
57 use bitcoin::secp256k1::{PublicKey, SecretKey, Scalar};
58 use bitcoin::secp256k1::ecdh::SharedSecret;
59 use bitcoin::secp256k1::ecdsa::RecoverableSignature;
60 use bitcoin::secp256k1::Secp256k1;
63 use std::cmp::{self, Ordering};
64 use std::collections::{HashSet, hash_map, HashMap};
65 use std::sync::{Arc,Mutex};
66 use std::sync::atomic;
68 use bitcoin::bech32::u5;
70 const MAX_FEE: u32 = 10_000;
71 struct FuzzEstimator {
72 ret_val: atomic::AtomicU32,
74 impl FeeEstimator for FuzzEstimator {
75 fn get_est_sat_per_1000_weight(&self, conf_target: ConfirmationTarget) -> u32 {
76 // We force-close channels if our counterparty sends us a feerate which is a small multiple
77 // of our HighPriority fee estimate or smaller than our Background fee estimate. Thus, we
78 // always return a HighPriority feerate here which is >= the maximum Normal feerate and a
79 // Background feerate which is <= the minimum Normal feerate.
81 ConfirmationTarget::HighPriority => MAX_FEE,
82 ConfirmationTarget::Background => 253,
83 ConfirmationTarget::Normal => cmp::min(self.ret_val.load(atomic::Ordering::Acquire), MAX_FEE),
88 pub struct TestBroadcaster {}
89 impl BroadcasterInterface for TestBroadcaster {
90 fn broadcast_transaction(&self, _tx: &Transaction) { }
93 pub struct VecWriter(pub Vec<u8>);
94 impl Writer for VecWriter {
95 fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
96 self.0.extend_from_slice(buf);
101 struct TestChainMonitor {
102 pub logger: Arc<dyn Logger>,
103 pub keys: Arc<KeyProvider>,
104 pub persister: Arc<TestPersister>,
105 pub chain_monitor: Arc<chainmonitor::ChainMonitor<EnforcingSigner, Arc<dyn chain::Filter>, Arc<TestBroadcaster>, Arc<FuzzEstimator>, Arc<dyn Logger>, Arc<TestPersister>>>,
106 // If we reload a node with an old copy of ChannelMonitors, the ChannelManager deserialization
107 // logic will automatically force-close our channels for us (as we don't have an up-to-date
108 // monitor implying we are not able to punish misbehaving counterparties). Because this test
109 // "fails" if we ever force-close a channel, we avoid doing so, always saving the latest
110 // fully-serialized monitor state here, as well as the corresponding update_id.
111 pub latest_monitors: Mutex<HashMap<OutPoint, (u64, Vec<u8>)>>,
112 pub should_update_manager: atomic::AtomicBool,
114 impl TestChainMonitor {
115 pub fn new(broadcaster: Arc<TestBroadcaster>, logger: Arc<dyn Logger>, feeest: Arc<FuzzEstimator>, persister: Arc<TestPersister>, keys: Arc<KeyProvider>) -> Self {
117 chain_monitor: Arc::new(chainmonitor::ChainMonitor::new(None, broadcaster, logger.clone(), feeest, Arc::clone(&persister))),
121 latest_monitors: Mutex::new(HashMap::new()),
122 should_update_manager: atomic::AtomicBool::new(false),
126 impl chain::Watch<EnforcingSigner> for TestChainMonitor {
127 fn watch_channel(&self, funding_txo: OutPoint, monitor: channelmonitor::ChannelMonitor<EnforcingSigner>) -> chain::ChannelMonitorUpdateStatus {
128 let mut ser = VecWriter(Vec::new());
129 monitor.write(&mut ser).unwrap();
130 if let Some(_) = self.latest_monitors.lock().unwrap().insert(funding_txo, (monitor.get_latest_update_id(), ser.0)) {
131 panic!("Already had monitor pre-watch_channel");
133 self.should_update_manager.store(true, atomic::Ordering::Relaxed);
134 self.chain_monitor.watch_channel(funding_txo, monitor)
137 fn update_channel(&self, funding_txo: OutPoint, update: channelmonitor::ChannelMonitorUpdate) -> chain::ChannelMonitorUpdateStatus {
138 let mut map_lock = self.latest_monitors.lock().unwrap();
139 let mut map_entry = match map_lock.entry(funding_txo) {
140 hash_map::Entry::Occupied(entry) => entry,
141 hash_map::Entry::Vacant(_) => panic!("Didn't have monitor on update call"),
143 let deserialized_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::
144 read(&mut Cursor::new(&map_entry.get().1), &*self.keys).unwrap().1;
145 deserialized_monitor.update_monitor(&update, &&TestBroadcaster{}, &FuzzEstimator { ret_val: atomic::AtomicU32::new(253) }, &self.logger).unwrap();
146 let mut ser = VecWriter(Vec::new());
147 deserialized_monitor.write(&mut ser).unwrap();
148 map_entry.insert((update.update_id, ser.0));
149 self.should_update_manager.store(true, atomic::Ordering::Relaxed);
150 self.chain_monitor.update_channel(funding_txo, update)
153 fn release_pending_monitor_events(&self) -> Vec<(OutPoint, Vec<MonitorEvent>, Option<PublicKey>)> {
154 return self.chain_monitor.release_pending_monitor_events();
160 rand_bytes_id: atomic::AtomicU32,
161 enforcement_states: Mutex<HashMap<[u8;32], Arc<Mutex<EnforcementState>>>>,
163 impl KeysInterface for KeyProvider {
164 type Signer = EnforcingSigner;
166 fn get_node_secret(&self, _recipient: Recipient) -> Result<SecretKey, ()> {
167 Ok(SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, self.node_id]).unwrap())
170 fn ecdh(&self, recipient: Recipient, other_key: &PublicKey, tweak: Option<&Scalar>) -> Result<SharedSecret, ()> {
171 let mut node_secret = self.get_node_secret(recipient)?;
172 if let Some(tweak) = tweak {
173 node_secret = node_secret.mul_tweak(tweak).unwrap();
175 Ok(SharedSecret::new(other_key, &node_secret))
178 fn get_inbound_payment_key_material(&self) -> KeyMaterial {
179 KeyMaterial([0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, self.node_id])
182 fn get_destination_script(&self) -> Script {
183 let secp_ctx = Secp256k1::signing_only();
184 let channel_monitor_claim_key = SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, self.node_id]).unwrap();
185 let our_channel_monitor_claim_key_hash = WPubkeyHash::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
186 Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script()
189 fn get_shutdown_scriptpubkey(&self) -> ShutdownScript {
190 let secp_ctx = Secp256k1::signing_only();
191 let secret_key = SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, self.node_id]).unwrap();
192 let pubkey_hash = WPubkeyHash::hash(&PublicKey::from_secret_key(&secp_ctx, &secret_key).serialize());
193 ShutdownScript::new_p2wpkh(&pubkey_hash)
196 fn get_channel_signer(&self, _inbound: bool, channel_value_satoshis: u64) -> EnforcingSigner {
197 let secp_ctx = Secp256k1::signing_only();
198 let id = self.rand_bytes_id.fetch_add(1, atomic::Ordering::Relaxed);
199 let keys = InMemorySigner::new(
201 self.get_node_secret(Recipient::Node).unwrap(),
202 SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, self.node_id]).unwrap(),
203 SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, self.node_id]).unwrap(),
204 SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, self.node_id]).unwrap(),
205 SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, self.node_id]).unwrap(),
206 SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, self.node_id]).unwrap(),
207 [id as u8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, self.node_id],
208 channel_value_satoshis,
211 let revoked_commitment = self.make_enforcement_state_cell(keys.commitment_seed);
212 EnforcingSigner::new_with_revoked(keys, revoked_commitment, false)
215 fn get_secure_random_bytes(&self) -> [u8; 32] {
216 let id = self.rand_bytes_id.fetch_add(1, atomic::Ordering::Relaxed);
217 let mut res = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, self.node_id];
218 res[30-4..30].copy_from_slice(&id.to_le_bytes());
222 fn read_chan_signer(&self, buffer: &[u8]) -> Result<Self::Signer, DecodeError> {
223 let mut reader = std::io::Cursor::new(buffer);
225 let inner: InMemorySigner = ReadableArgs::read(&mut reader, self.get_node_secret(Recipient::Node).unwrap())?;
226 let state = self.make_enforcement_state_cell(inner.commitment_seed);
231 disable_revocation_policy_check: false,
235 fn sign_invoice(&self, _hrp_bytes: &[u8], _invoice_data: &[u5], _recipient: Recipient) -> Result<RecoverableSignature, ()> {
241 fn make_enforcement_state_cell(&self, commitment_seed: [u8; 32]) -> Arc<Mutex<EnforcementState>> {
242 let mut revoked_commitments = self.enforcement_states.lock().unwrap();
243 if !revoked_commitments.contains_key(&commitment_seed) {
244 revoked_commitments.insert(commitment_seed, Arc::new(Mutex::new(EnforcementState::new())));
246 let cell = revoked_commitments.get(&commitment_seed).unwrap();
252 fn check_api_err(api_err: APIError) {
254 APIError::APIMisuseError { .. } => panic!("We can't misuse the API"),
255 APIError::FeeRateTooHigh { .. } => panic!("We can't send too much fee?"),
256 APIError::RouteError { .. } => panic!("Our routes should work"),
257 APIError::ChannelUnavailable { err } => {
258 // Test the error against a list of errors we can hit, and reject
259 // all others. If you hit this panic, the list of acceptable errors
260 // is probably just stale and you should add new messages here.
262 "Peer for first hop currently disconnected/pending monitor update!" => {},
263 _ if err.starts_with("Cannot push more than their max accepted HTLCs ") => {},
264 _ if err.starts_with("Cannot send value that would put us over the max HTLC value in flight our peer will accept ") => {},
265 _ if err.starts_with("Cannot send value that would put our balance under counterparty-announced channel reserve value") => {},
266 _ if err.starts_with("Cannot send value that would put counterparty balance under holder-announced channel reserve value") => {},
267 _ if err.starts_with("Cannot send value that would overdraw remaining funds.") => {},
268 _ if err.starts_with("Cannot send value that would not leave enough to pay for fees.") => {},
269 _ if err.starts_with("Cannot send value that would put our exposure to dust HTLCs at") => {},
270 _ => panic!("{}", err),
273 APIError::MonitorUpdateInProgress => {
274 // We can (obviously) temp-fail a monitor update
276 APIError::IncompatibleShutdownScript { .. } => panic!("Cannot send an incompatible shutdown script"),
280 fn check_payment_err(send_err: PaymentSendFailure) {
282 PaymentSendFailure::ParameterError(api_err) => check_api_err(api_err),
283 PaymentSendFailure::PathParameterError(per_path_results) => {
284 for res in per_path_results { if let Err(api_err) = res { check_api_err(api_err); } }
286 PaymentSendFailure::AllFailedRetrySafe(per_path_results) => {
287 for api_err in per_path_results { check_api_err(api_err); }
289 PaymentSendFailure::PartialFailure { results, .. } => {
290 for res in results { if let Err(api_err) = res { check_api_err(api_err); } }
295 type ChanMan = ChannelManager<EnforcingSigner, Arc<TestChainMonitor>, Arc<TestBroadcaster>, Arc<KeyProvider>, Arc<FuzzEstimator>, Arc<dyn Logger>>;
298 fn get_payment_secret_hash(dest: &ChanMan, payment_id: &mut u8) -> Option<(PaymentSecret, PaymentHash)> {
299 let mut payment_hash;
301 payment_hash = PaymentHash(Sha256::hash(&[*payment_id; 1]).into_inner());
302 if let Ok(payment_secret) = dest.create_inbound_payment_for_hash(payment_hash, None, 3600) {
303 return Some((payment_secret, payment_hash));
305 *payment_id = payment_id.wrapping_add(1);
311 fn send_payment(source: &ChanMan, dest: &ChanMan, dest_chan_id: u64, amt: u64, payment_id: &mut u8) -> bool {
312 let (payment_secret, payment_hash) =
313 if let Some((secret, hash)) = get_payment_secret_hash(dest, payment_id) { (secret, hash) } else { return true; };
314 if let Err(err) = source.send_payment(&Route {
315 paths: vec![vec![RouteHop {
316 pubkey: dest.get_our_node_id(),
317 node_features: channelmanager::provided_node_features(),
318 short_channel_id: dest_chan_id,
319 channel_features: channelmanager::provided_channel_features(),
321 cltv_expiry_delta: 200,
323 payment_params: None,
324 }, payment_hash, &Some(payment_secret)) {
325 check_payment_err(err);
330 fn send_hop_payment(source: &ChanMan, middle: &ChanMan, middle_chan_id: u64, dest: &ChanMan, dest_chan_id: u64, amt: u64, payment_id: &mut u8) -> bool {
331 let (payment_secret, payment_hash) =
332 if let Some((secret, hash)) = get_payment_secret_hash(dest, payment_id) { (secret, hash) } else { return true; };
333 if let Err(err) = source.send_payment(&Route {
334 paths: vec![vec![RouteHop {
335 pubkey: middle.get_our_node_id(),
336 node_features: channelmanager::provided_node_features(),
337 short_channel_id: middle_chan_id,
338 channel_features: channelmanager::provided_channel_features(),
340 cltv_expiry_delta: 100,
342 pubkey: dest.get_our_node_id(),
343 node_features: channelmanager::provided_node_features(),
344 short_channel_id: dest_chan_id,
345 channel_features: channelmanager::provided_channel_features(),
347 cltv_expiry_delta: 200,
349 payment_params: None,
350 }, payment_hash, &Some(payment_secret)) {
351 check_payment_err(err);
357 pub fn do_test<Out: Output>(data: &[u8], underlying_out: Out) {
358 let out = SearchingOutput::new(underlying_out);
359 let broadcast = Arc::new(TestBroadcaster{});
361 macro_rules! make_node {
362 ($node_id: expr, $fee_estimator: expr) => { {
363 let logger: Arc<dyn Logger> = Arc::new(test_logger::TestLogger::new($node_id.to_string(), out.clone()));
364 let keys_manager = Arc::new(KeyProvider { node_id: $node_id, rand_bytes_id: atomic::AtomicU32::new(0), enforcement_states: Mutex::new(HashMap::new()) });
365 let monitor = Arc::new(TestChainMonitor::new(broadcast.clone(), logger.clone(), $fee_estimator.clone(),
366 Arc::new(TestPersister {
367 update_ret: Mutex::new(ChannelMonitorUpdateStatus::Completed)
368 }), Arc::clone(&keys_manager)));
370 let mut config = UserConfig::default();
371 config.channel_config.forwarding_fee_proportional_millionths = 0;
372 config.channel_handshake_config.announced_channel = true;
373 let network = Network::Bitcoin;
374 let params = ChainParameters {
376 best_block: BestBlock::from_genesis(network),
378 (ChannelManager::new($fee_estimator.clone(), monitor.clone(), broadcast.clone(), Arc::clone(&logger), keys_manager.clone(), config, params),
379 monitor, keys_manager)
383 macro_rules! reload_node {
384 ($ser: expr, $node_id: expr, $old_monitors: expr, $keys_manager: expr, $fee_estimator: expr) => { {
385 let keys_manager = Arc::clone(& $keys_manager);
386 let logger: Arc<dyn Logger> = Arc::new(test_logger::TestLogger::new($node_id.to_string(), out.clone()));
387 let chain_monitor = Arc::new(TestChainMonitor::new(broadcast.clone(), logger.clone(), $fee_estimator.clone(),
388 Arc::new(TestPersister {
389 update_ret: Mutex::new(ChannelMonitorUpdateStatus::Completed)
390 }), Arc::clone(& $keys_manager)));
392 let mut config = UserConfig::default();
393 config.channel_config.forwarding_fee_proportional_millionths = 0;
394 config.channel_handshake_config.announced_channel = true;
396 let mut monitors = HashMap::new();
397 let mut old_monitors = $old_monitors.latest_monitors.lock().unwrap();
398 for (outpoint, (update_id, monitor_ser)) in old_monitors.drain() {
399 monitors.insert(outpoint, <(BlockHash, ChannelMonitor<EnforcingSigner>)>::read(&mut Cursor::new(&monitor_ser), &*$keys_manager).expect("Failed to read monitor").1);
400 chain_monitor.latest_monitors.lock().unwrap().insert(outpoint, (update_id, monitor_ser));
402 let mut monitor_refs = HashMap::new();
403 for (outpoint, monitor) in monitors.iter_mut() {
404 monitor_refs.insert(*outpoint, monitor);
407 let read_args = ChannelManagerReadArgs {
409 fee_estimator: $fee_estimator.clone(),
410 chain_monitor: chain_monitor.clone(),
411 tx_broadcaster: broadcast.clone(),
413 default_config: config,
414 channel_monitors: monitor_refs,
417 let res = (<(BlockHash, ChanMan)>::read(&mut Cursor::new(&$ser.0), read_args).expect("Failed to read manager").1, chain_monitor.clone());
418 for (funding_txo, mon) in monitors.drain() {
419 assert_eq!(chain_monitor.chain_monitor.watch_channel(funding_txo, mon),
420 ChannelMonitorUpdateStatus::Completed);
426 let mut channel_txn = Vec::new();
427 macro_rules! make_channel {
428 ($source: expr, $dest: expr, $chan_id: expr) => { {
429 $source.peer_connected(&$dest.get_our_node_id(), &Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
430 $dest.peer_connected(&$source.get_our_node_id(), &Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
432 $source.create_channel($dest.get_our_node_id(), 100_000, 42, 0, None).unwrap();
434 let events = $source.get_and_clear_pending_msg_events();
435 assert_eq!(events.len(), 1);
436 if let events::MessageSendEvent::SendOpenChannel { ref msg, .. } = events[0] {
438 } else { panic!("Wrong event type"); }
441 $dest.handle_open_channel(&$source.get_our_node_id(), channelmanager::provided_init_features(), &open_channel);
442 let accept_channel = {
443 let events = $dest.get_and_clear_pending_msg_events();
444 assert_eq!(events.len(), 1);
445 if let events::MessageSendEvent::SendAcceptChannel { ref msg, .. } = events[0] {
447 } else { panic!("Wrong event type"); }
450 $source.handle_accept_channel(&$dest.get_our_node_id(), channelmanager::provided_init_features(), &accept_channel);
453 let events = $source.get_and_clear_pending_events();
454 assert_eq!(events.len(), 1);
455 if let events::Event::FundingGenerationReady { ref temporary_channel_id, ref channel_value_satoshis, ref output_script, .. } = events[0] {
456 let tx = Transaction { version: $chan_id, lock_time: PackedLockTime::ZERO, input: Vec::new(), output: vec![TxOut {
457 value: *channel_value_satoshis, script_pubkey: output_script.clone(),
459 funding_output = OutPoint { txid: tx.txid(), index: 0 };
460 $source.funding_transaction_generated(&temporary_channel_id, &$dest.get_our_node_id(), tx.clone()).unwrap();
461 channel_txn.push(tx);
462 } else { panic!("Wrong event type"); }
465 let funding_created = {
466 let events = $source.get_and_clear_pending_msg_events();
467 assert_eq!(events.len(), 1);
468 if let events::MessageSendEvent::SendFundingCreated { ref msg, .. } = events[0] {
470 } else { panic!("Wrong event type"); }
472 $dest.handle_funding_created(&$source.get_our_node_id(), &funding_created);
474 let funding_signed = {
475 let events = $dest.get_and_clear_pending_msg_events();
476 assert_eq!(events.len(), 1);
477 if let events::MessageSendEvent::SendFundingSigned { ref msg, .. } = events[0] {
479 } else { panic!("Wrong event type"); }
481 $source.handle_funding_signed(&$dest.get_our_node_id(), &funding_signed);
487 macro_rules! confirm_txn {
489 let chain_hash = genesis_block(Network::Bitcoin).block_hash();
490 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: chain_hash, merkle_root: TxMerkleNode::all_zeros(), time: 42, bits: 42, nonce: 42 };
491 let txdata: Vec<_> = channel_txn.iter().enumerate().map(|(i, tx)| (i + 1, tx)).collect();
492 $node.transactions_confirmed(&header, &txdata, 1);
494 header = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: TxMerkleNode::all_zeros(), time: 42, bits: 42, nonce: 42 };
496 $node.best_block_updated(&header, 99);
500 macro_rules! lock_fundings {
501 ($nodes: expr) => { {
502 let mut node_events = Vec::new();
503 for node in $nodes.iter() {
504 node_events.push(node.get_and_clear_pending_msg_events());
506 for (idx, node_event) in node_events.iter().enumerate() {
507 for event in node_event {
508 if let events::MessageSendEvent::SendChannelReady { ref node_id, ref msg } = event {
509 for node in $nodes.iter() {
510 if node.get_our_node_id() == *node_id {
511 node.handle_channel_ready(&$nodes[idx].get_our_node_id(), msg);
514 } else { panic!("Wrong event type"); }
518 for node in $nodes.iter() {
519 let events = node.get_and_clear_pending_msg_events();
520 for event in events {
521 if let events::MessageSendEvent::SendAnnouncementSignatures { .. } = event {
522 } else { panic!("Wrong event type"); }
528 let fee_est_a = Arc::new(FuzzEstimator { ret_val: atomic::AtomicU32::new(253) });
529 let mut last_htlc_clear_fee_a = 253;
530 let fee_est_b = Arc::new(FuzzEstimator { ret_val: atomic::AtomicU32::new(253) });
531 let mut last_htlc_clear_fee_b = 253;
532 let fee_est_c = Arc::new(FuzzEstimator { ret_val: atomic::AtomicU32::new(253) });
533 let mut last_htlc_clear_fee_c = 253;
535 // 3 nodes is enough to hit all the possible cases, notably unknown-source-unknown-dest
537 let (node_a, mut monitor_a, keys_manager_a) = make_node!(0, fee_est_a);
538 let (node_b, mut monitor_b, keys_manager_b) = make_node!(1, fee_est_b);
539 let (node_c, mut monitor_c, keys_manager_c) = make_node!(2, fee_est_c);
541 let mut nodes = [node_a, node_b, node_c];
543 let chan_1_funding = make_channel!(nodes[0], nodes[1], 0);
544 let chan_2_funding = make_channel!(nodes[1], nodes[2], 1);
546 for node in nodes.iter() {
550 lock_fundings!(nodes);
552 let chan_a = nodes[0].list_usable_channels()[0].short_channel_id.unwrap();
553 let chan_b = nodes[2].list_usable_channels()[0].short_channel_id.unwrap();
555 let mut payment_id: u8 = 0;
557 let mut chan_a_disconnected = false;
558 let mut chan_b_disconnected = false;
559 let mut ab_events = Vec::new();
560 let mut ba_events = Vec::new();
561 let mut bc_events = Vec::new();
562 let mut cb_events = Vec::new();
564 let mut node_a_ser = VecWriter(Vec::new());
565 nodes[0].write(&mut node_a_ser).unwrap();
566 let mut node_b_ser = VecWriter(Vec::new());
567 nodes[1].write(&mut node_b_ser).unwrap();
568 let mut node_c_ser = VecWriter(Vec::new());
569 nodes[2].write(&mut node_c_ser).unwrap();
571 macro_rules! test_return {
573 assert_eq!(nodes[0].list_channels().len(), 1);
574 assert_eq!(nodes[1].list_channels().len(), 2);
575 assert_eq!(nodes[2].list_channels().len(), 1);
580 let mut read_pos = 0;
581 macro_rules! get_slice {
584 let slice_len = $len as usize;
585 if data.len() < read_pos + slice_len {
588 read_pos += slice_len;
589 &data[read_pos - slice_len..read_pos]
595 // Push any events from Node B onto ba_events and bc_events
596 macro_rules! push_excess_b_events {
597 ($excess_events: expr, $expect_drop_node: expr) => { {
598 let a_id = nodes[0].get_our_node_id();
599 let expect_drop_node: Option<usize> = $expect_drop_node;
600 let expect_drop_id = if let Some(id) = expect_drop_node { Some(nodes[id].get_our_node_id()) } else { None };
601 for event in $excess_events {
602 let push_a = match event {
603 events::MessageSendEvent::UpdateHTLCs { ref node_id, .. } => {
604 if Some(*node_id) == expect_drop_id { panic!("peer_disconnected should drop msgs bound for the disconnected peer"); }
607 events::MessageSendEvent::SendRevokeAndACK { ref node_id, .. } => {
608 if Some(*node_id) == expect_drop_id { panic!("peer_disconnected should drop msgs bound for the disconnected peer"); }
611 events::MessageSendEvent::SendChannelReestablish { ref node_id, .. } => {
612 if Some(*node_id) == expect_drop_id { panic!("peer_disconnected should drop msgs bound for the disconnected peer"); }
615 events::MessageSendEvent::SendChannelReady { .. } => continue,
616 events::MessageSendEvent::SendAnnouncementSignatures { .. } => continue,
617 events::MessageSendEvent::SendChannelUpdate { ref node_id, ref msg } => {
618 assert_eq!(msg.contents.flags & 2, 0); // The disable bit must never be set!
619 if Some(*node_id) == expect_drop_id { panic!("peer_disconnected should drop msgs bound for the disconnected peer"); }
622 _ => panic!("Unhandled message event {:?}", event),
624 if push_a { ba_events.push(event); } else { bc_events.push(event); }
629 // While delivering messages, we select across three possible message selection processes
630 // to ensure we get as much coverage as possible. See the individual enum variants for more
633 enum ProcessMessages {
634 /// Deliver all available messages, including fetching any new messages from
635 /// `get_and_clear_pending_msg_events()` (which may have side effects).
637 /// Call `get_and_clear_pending_msg_events()` first, and then deliver up to one
638 /// message (which may already be queued).
640 /// Deliver up to one already-queued message. This avoids any potential side-effects
641 /// of `get_and_clear_pending_msg_events()` (eg freeing the HTLC holding cell), which
642 /// provides potentially more coverage.
646 macro_rules! process_msg_events {
647 ($node: expr, $corrupt_forward: expr, $limit_events: expr) => { {
648 let mut events = if $node == 1 {
649 let mut new_events = Vec::new();
650 mem::swap(&mut new_events, &mut ba_events);
651 new_events.extend_from_slice(&bc_events[..]);
654 } else if $node == 0 {
655 let mut new_events = Vec::new();
656 mem::swap(&mut new_events, &mut ab_events);
659 let mut new_events = Vec::new();
660 mem::swap(&mut new_events, &mut cb_events);
663 let mut new_events = Vec::new();
664 if $limit_events != ProcessMessages::OnePendingMessage {
665 new_events = nodes[$node].get_and_clear_pending_msg_events();
667 let mut had_events = false;
668 let mut events_iter = events.drain(..).chain(new_events.drain(..));
669 let mut extra_ev = None;
670 for event in &mut events_iter {
673 events::MessageSendEvent::UpdateHTLCs { node_id, updates: CommitmentUpdate { update_add_htlcs, update_fail_htlcs, update_fulfill_htlcs, update_fail_malformed_htlcs, update_fee, commitment_signed } } => {
674 for (idx, dest) in nodes.iter().enumerate() {
675 if dest.get_our_node_id() == node_id {
676 for update_add in update_add_htlcs.iter() {
677 out.locked_write(format!("Delivering update_add_htlc to node {}.\n", idx).as_bytes());
678 if !$corrupt_forward {
679 dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), update_add);
681 // Corrupt the update_add_htlc message so that its HMAC
682 // check will fail and we generate a
683 // update_fail_malformed_htlc instead of an
684 // update_fail_htlc as we do when we reject a payment.
685 let mut msg_ser = update_add.encode();
686 msg_ser[1000] ^= 0xff;
687 let new_msg = UpdateAddHTLC::read(&mut Cursor::new(&msg_ser)).unwrap();
688 dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &new_msg);
691 for update_fulfill in update_fulfill_htlcs.iter() {
692 out.locked_write(format!("Delivering update_fulfill_htlc to node {}.\n", idx).as_bytes());
693 dest.handle_update_fulfill_htlc(&nodes[$node].get_our_node_id(), update_fulfill);
695 for update_fail in update_fail_htlcs.iter() {
696 out.locked_write(format!("Delivering update_fail_htlc to node {}.\n", idx).as_bytes());
697 dest.handle_update_fail_htlc(&nodes[$node].get_our_node_id(), update_fail);
699 for update_fail_malformed in update_fail_malformed_htlcs.iter() {
700 out.locked_write(format!("Delivering update_fail_malformed_htlc to node {}.\n", idx).as_bytes());
701 dest.handle_update_fail_malformed_htlc(&nodes[$node].get_our_node_id(), update_fail_malformed);
703 if let Some(msg) = update_fee {
704 out.locked_write(format!("Delivering update_fee to node {}.\n", idx).as_bytes());
705 dest.handle_update_fee(&nodes[$node].get_our_node_id(), &msg);
707 let processed_change = !update_add_htlcs.is_empty() || !update_fulfill_htlcs.is_empty() ||
708 !update_fail_htlcs.is_empty() || !update_fail_malformed_htlcs.is_empty();
709 if $limit_events != ProcessMessages::AllMessages && processed_change {
710 // If we only want to process some messages, don't deliver the CS until later.
711 extra_ev = Some(events::MessageSendEvent::UpdateHTLCs { node_id, updates: CommitmentUpdate {
712 update_add_htlcs: Vec::new(),
713 update_fail_htlcs: Vec::new(),
714 update_fulfill_htlcs: Vec::new(),
715 update_fail_malformed_htlcs: Vec::new(),
721 out.locked_write(format!("Delivering commitment_signed to node {}.\n", idx).as_bytes());
722 dest.handle_commitment_signed(&nodes[$node].get_our_node_id(), &commitment_signed);
727 events::MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
728 for (idx, dest) in nodes.iter().enumerate() {
729 if dest.get_our_node_id() == *node_id {
730 out.locked_write(format!("Delivering revoke_and_ack to node {}.\n", idx).as_bytes());
731 dest.handle_revoke_and_ack(&nodes[$node].get_our_node_id(), msg);
735 events::MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } => {
736 for (idx, dest) in nodes.iter().enumerate() {
737 if dest.get_our_node_id() == *node_id {
738 out.locked_write(format!("Delivering channel_reestablish to node {}.\n", idx).as_bytes());
739 dest.handle_channel_reestablish(&nodes[$node].get_our_node_id(), msg);
743 events::MessageSendEvent::SendChannelReady { .. } => {
744 // Can be generated as a reestablish response
746 events::MessageSendEvent::SendAnnouncementSignatures { .. } => {
747 // Can be generated as a reestablish response
749 events::MessageSendEvent::SendChannelUpdate { ref msg, .. } => {
750 // When we reconnect we will resend a channel_update to make sure our
751 // counterparty has the latest parameters for receiving payments
752 // through us. We do, however, check that the message does not include
753 // the "disabled" bit, as we should never ever have a channel which is
754 // disabled when we send such an update (or it may indicate channel
755 // force-close which we should detect as an error).
756 assert_eq!(msg.contents.flags & 2, 0);
758 _ => if out.may_fail.load(atomic::Ordering::Acquire) {
761 panic!("Unhandled message event {:?}", event)
764 if $limit_events != ProcessMessages::AllMessages {
769 push_excess_b_events!(extra_ev.into_iter().chain(events_iter), None);
770 } else if $node == 0 {
771 if let Some(ev) = extra_ev { ab_events.push(ev); }
772 for event in events_iter { ab_events.push(event); }
774 if let Some(ev) = extra_ev { cb_events.push(ev); }
775 for event in events_iter { cb_events.push(event); }
781 macro_rules! drain_msg_events_on_disconnect {
782 ($counterparty_id: expr) => { {
783 if $counterparty_id == 0 {
784 for event in nodes[0].get_and_clear_pending_msg_events() {
786 events::MessageSendEvent::UpdateHTLCs { .. } => {},
787 events::MessageSendEvent::SendRevokeAndACK { .. } => {},
788 events::MessageSendEvent::SendChannelReestablish { .. } => {},
789 events::MessageSendEvent::SendChannelReady { .. } => {},
790 events::MessageSendEvent::SendAnnouncementSignatures { .. } => {},
791 events::MessageSendEvent::SendChannelUpdate { ref msg, .. } => {
792 assert_eq!(msg.contents.flags & 2, 0); // The disable bit must never be set!
794 _ => if out.may_fail.load(atomic::Ordering::Acquire) {
797 panic!("Unhandled message event")
801 push_excess_b_events!(nodes[1].get_and_clear_pending_msg_events().drain(..), Some(0));
805 for event in nodes[2].get_and_clear_pending_msg_events() {
807 events::MessageSendEvent::UpdateHTLCs { .. } => {},
808 events::MessageSendEvent::SendRevokeAndACK { .. } => {},
809 events::MessageSendEvent::SendChannelReestablish { .. } => {},
810 events::MessageSendEvent::SendChannelReady { .. } => {},
811 events::MessageSendEvent::SendAnnouncementSignatures { .. } => {},
812 events::MessageSendEvent::SendChannelUpdate { ref msg, .. } => {
813 assert_eq!(msg.contents.flags & 2, 0); // The disable bit must never be set!
815 _ => if out.may_fail.load(atomic::Ordering::Acquire) {
818 panic!("Unhandled message event")
822 push_excess_b_events!(nodes[1].get_and_clear_pending_msg_events().drain(..), Some(2));
829 macro_rules! process_events {
830 ($node: expr, $fail: expr) => { {
831 // In case we get 256 payments we may have a hash collision, resulting in the
832 // second claim/fail call not finding the duplicate-hash HTLC, so we have to
833 // deduplicate the calls here.
834 let mut claim_set = HashSet::new();
835 let mut events = nodes[$node].get_and_clear_pending_events();
836 // Sort events so that PendingHTLCsForwardable get processed last. This avoids a
837 // case where we first process a PendingHTLCsForwardable, then claim/fail on a
838 // PaymentReceived, claiming/failing two HTLCs, but leaving a just-generated
839 // PaymentReceived event for the second HTLC in our pending_events (and breaking
840 // our claim_set deduplication).
841 events.sort_by(|a, b| {
842 if let events::Event::PaymentReceived { .. } = a {
843 if let events::Event::PendingHTLCsForwardable { .. } = b {
845 } else { Ordering::Equal }
846 } else if let events::Event::PendingHTLCsForwardable { .. } = a {
847 if let events::Event::PaymentReceived { .. } = b {
849 } else { Ordering::Equal }
850 } else { Ordering::Equal }
852 let had_events = !events.is_empty();
853 for event in events.drain(..) {
855 events::Event::PaymentReceived { payment_hash, .. } => {
856 if claim_set.insert(payment_hash.0) {
858 nodes[$node].fail_htlc_backwards(&payment_hash);
860 nodes[$node].claim_funds(PaymentPreimage(payment_hash.0));
864 events::Event::PaymentSent { .. } => {},
865 events::Event::PaymentClaimed { .. } => {},
866 events::Event::PaymentPathSuccessful { .. } => {},
867 events::Event::PaymentPathFailed { .. } => {},
868 events::Event::ProbeSuccessful { .. } | events::Event::ProbeFailed { .. } => {
869 // Even though we don't explicitly send probes, because probes are
870 // detected based on hashing the payment hash+preimage, its rather
871 // trivial for the fuzzer to build payments that accidentally end up
872 // looking like probes.
874 events::Event::PaymentForwarded { .. } if $node == 1 => {},
875 events::Event::PendingHTLCsForwardable { .. } => {
876 nodes[$node].process_pending_htlc_forwards();
878 events::Event::HTLCHandlingFailed { .. } => {},
879 _ => if out.may_fail.load(atomic::Ordering::Acquire) {
882 panic!("Unhandled event")
890 let v = get_slice!(1)[0];
891 out.locked_write(format!("READ A BYTE! HANDLING INPUT {:x}...........\n", v).as_bytes());
893 // In general, we keep related message groups close together in binary form, allowing
894 // bit-twiddling mutations to have similar effects. This is probably overkill, but no
897 0x00 => *monitor_a.persister.update_ret.lock().unwrap() = ChannelMonitorUpdateStatus::InProgress,
898 0x01 => *monitor_b.persister.update_ret.lock().unwrap() = ChannelMonitorUpdateStatus::InProgress,
899 0x02 => *monitor_c.persister.update_ret.lock().unwrap() = ChannelMonitorUpdateStatus::InProgress,
900 0x04 => *monitor_a.persister.update_ret.lock().unwrap() = ChannelMonitorUpdateStatus::Completed,
901 0x05 => *monitor_b.persister.update_ret.lock().unwrap() = ChannelMonitorUpdateStatus::Completed,
902 0x06 => *monitor_c.persister.update_ret.lock().unwrap() = ChannelMonitorUpdateStatus::Completed,
905 if let Some((id, _)) = monitor_a.latest_monitors.lock().unwrap().get(&chan_1_funding) {
906 monitor_a.chain_monitor.force_channel_monitor_updated(chan_1_funding, *id);
907 nodes[0].process_monitor_events();
911 if let Some((id, _)) = monitor_b.latest_monitors.lock().unwrap().get(&chan_1_funding) {
912 monitor_b.chain_monitor.force_channel_monitor_updated(chan_1_funding, *id);
913 nodes[1].process_monitor_events();
917 if let Some((id, _)) = monitor_b.latest_monitors.lock().unwrap().get(&chan_2_funding) {
918 monitor_b.chain_monitor.force_channel_monitor_updated(chan_2_funding, *id);
919 nodes[1].process_monitor_events();
923 if let Some((id, _)) = monitor_c.latest_monitors.lock().unwrap().get(&chan_2_funding) {
924 monitor_c.chain_monitor.force_channel_monitor_updated(chan_2_funding, *id);
925 nodes[2].process_monitor_events();
930 if !chan_a_disconnected {
931 nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
932 nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
933 chan_a_disconnected = true;
934 drain_msg_events_on_disconnect!(0);
938 if !chan_b_disconnected {
939 nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
940 nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
941 chan_b_disconnected = true;
942 drain_msg_events_on_disconnect!(2);
946 if chan_a_disconnected {
947 nodes[0].peer_connected(&nodes[1].get_our_node_id(), &Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
948 nodes[1].peer_connected(&nodes[0].get_our_node_id(), &Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
949 chan_a_disconnected = false;
953 if chan_b_disconnected {
954 nodes[1].peer_connected(&nodes[2].get_our_node_id(), &Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
955 nodes[2].peer_connected(&nodes[1].get_our_node_id(), &Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
956 chan_b_disconnected = false;
960 0x10 => { process_msg_events!(0, true, ProcessMessages::AllMessages); },
961 0x11 => { process_msg_events!(0, false, ProcessMessages::AllMessages); },
962 0x12 => { process_msg_events!(0, true, ProcessMessages::OneMessage); },
963 0x13 => { process_msg_events!(0, false, ProcessMessages::OneMessage); },
964 0x14 => { process_msg_events!(0, true, ProcessMessages::OnePendingMessage); },
965 0x15 => { process_msg_events!(0, false, ProcessMessages::OnePendingMessage); },
967 0x16 => { process_events!(0, true); },
968 0x17 => { process_events!(0, false); },
970 0x18 => { process_msg_events!(1, true, ProcessMessages::AllMessages); },
971 0x19 => { process_msg_events!(1, false, ProcessMessages::AllMessages); },
972 0x1a => { process_msg_events!(1, true, ProcessMessages::OneMessage); },
973 0x1b => { process_msg_events!(1, false, ProcessMessages::OneMessage); },
974 0x1c => { process_msg_events!(1, true, ProcessMessages::OnePendingMessage); },
975 0x1d => { process_msg_events!(1, false, ProcessMessages::OnePendingMessage); },
977 0x1e => { process_events!(1, true); },
978 0x1f => { process_events!(1, false); },
980 0x20 => { process_msg_events!(2, true, ProcessMessages::AllMessages); },
981 0x21 => { process_msg_events!(2, false, ProcessMessages::AllMessages); },
982 0x22 => { process_msg_events!(2, true, ProcessMessages::OneMessage); },
983 0x23 => { process_msg_events!(2, false, ProcessMessages::OneMessage); },
984 0x24 => { process_msg_events!(2, true, ProcessMessages::OnePendingMessage); },
985 0x25 => { process_msg_events!(2, false, ProcessMessages::OnePendingMessage); },
987 0x26 => { process_events!(2, true); },
988 0x27 => { process_events!(2, false); },
991 if !chan_a_disconnected {
992 nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
993 chan_a_disconnected = true;
994 drain_msg_events_on_disconnect!(0);
996 if monitor_a.should_update_manager.load(atomic::Ordering::Relaxed) {
997 node_a_ser.0.clear();
998 nodes[0].write(&mut node_a_ser).unwrap();
1000 let (new_node_a, new_monitor_a) = reload_node!(node_a_ser, 0, monitor_a, keys_manager_a, fee_est_a);
1001 nodes[0] = new_node_a;
1002 monitor_a = new_monitor_a;
1005 if !chan_a_disconnected {
1006 nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
1007 chan_a_disconnected = true;
1008 nodes[0].get_and_clear_pending_msg_events();
1012 if !chan_b_disconnected {
1013 nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
1014 chan_b_disconnected = true;
1015 nodes[2].get_and_clear_pending_msg_events();
1019 let (new_node_b, new_monitor_b) = reload_node!(node_b_ser, 1, monitor_b, keys_manager_b, fee_est_b);
1020 nodes[1] = new_node_b;
1021 monitor_b = new_monitor_b;
1024 if !chan_b_disconnected {
1025 nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
1026 chan_b_disconnected = true;
1027 drain_msg_events_on_disconnect!(2);
1029 if monitor_c.should_update_manager.load(atomic::Ordering::Relaxed) {
1030 node_c_ser.0.clear();
1031 nodes[2].write(&mut node_c_ser).unwrap();
1033 let (new_node_c, new_monitor_c) = reload_node!(node_c_ser, 2, monitor_c, keys_manager_c, fee_est_c);
1034 nodes[2] = new_node_c;
1035 monitor_c = new_monitor_c;
1038 // 1/10th the channel size:
1039 0x30 => { send_payment(&nodes[0], &nodes[1], chan_a, 10_000_000, &mut payment_id); },
1040 0x31 => { send_payment(&nodes[1], &nodes[0], chan_a, 10_000_000, &mut payment_id); },
1041 0x32 => { send_payment(&nodes[1], &nodes[2], chan_b, 10_000_000, &mut payment_id); },
1042 0x33 => { send_payment(&nodes[2], &nodes[1], chan_b, 10_000_000, &mut payment_id); },
1043 0x34 => { send_hop_payment(&nodes[0], &nodes[1], chan_a, &nodes[2], chan_b, 10_000_000, &mut payment_id); },
1044 0x35 => { send_hop_payment(&nodes[2], &nodes[1], chan_b, &nodes[0], chan_a, 10_000_000, &mut payment_id); },
1046 0x38 => { send_payment(&nodes[0], &nodes[1], chan_a, 1_000_000, &mut payment_id); },
1047 0x39 => { send_payment(&nodes[1], &nodes[0], chan_a, 1_000_000, &mut payment_id); },
1048 0x3a => { send_payment(&nodes[1], &nodes[2], chan_b, 1_000_000, &mut payment_id); },
1049 0x3b => { send_payment(&nodes[2], &nodes[1], chan_b, 1_000_000, &mut payment_id); },
1050 0x3c => { send_hop_payment(&nodes[0], &nodes[1], chan_a, &nodes[2], chan_b, 1_000_000, &mut payment_id); },
1051 0x3d => { send_hop_payment(&nodes[2], &nodes[1], chan_b, &nodes[0], chan_a, 1_000_000, &mut payment_id); },
1053 0x40 => { send_payment(&nodes[0], &nodes[1], chan_a, 100_000, &mut payment_id); },
1054 0x41 => { send_payment(&nodes[1], &nodes[0], chan_a, 100_000, &mut payment_id); },
1055 0x42 => { send_payment(&nodes[1], &nodes[2], chan_b, 100_000, &mut payment_id); },
1056 0x43 => { send_payment(&nodes[2], &nodes[1], chan_b, 100_000, &mut payment_id); },
1057 0x44 => { send_hop_payment(&nodes[0], &nodes[1], chan_a, &nodes[2], chan_b, 100_000, &mut payment_id); },
1058 0x45 => { send_hop_payment(&nodes[2], &nodes[1], chan_b, &nodes[0], chan_a, 100_000, &mut payment_id); },
1060 0x48 => { send_payment(&nodes[0], &nodes[1], chan_a, 10_000, &mut payment_id); },
1061 0x49 => { send_payment(&nodes[1], &nodes[0], chan_a, 10_000, &mut payment_id); },
1062 0x4a => { send_payment(&nodes[1], &nodes[2], chan_b, 10_000, &mut payment_id); },
1063 0x4b => { send_payment(&nodes[2], &nodes[1], chan_b, 10_000, &mut payment_id); },
1064 0x4c => { send_hop_payment(&nodes[0], &nodes[1], chan_a, &nodes[2], chan_b, 10_000, &mut payment_id); },
1065 0x4d => { send_hop_payment(&nodes[2], &nodes[1], chan_b, &nodes[0], chan_a, 10_000, &mut payment_id); },
1067 0x50 => { send_payment(&nodes[0], &nodes[1], chan_a, 1_000, &mut payment_id); },
1068 0x51 => { send_payment(&nodes[1], &nodes[0], chan_a, 1_000, &mut payment_id); },
1069 0x52 => { send_payment(&nodes[1], &nodes[2], chan_b, 1_000, &mut payment_id); },
1070 0x53 => { send_payment(&nodes[2], &nodes[1], chan_b, 1_000, &mut payment_id); },
1071 0x54 => { send_hop_payment(&nodes[0], &nodes[1], chan_a, &nodes[2], chan_b, 1_000, &mut payment_id); },
1072 0x55 => { send_hop_payment(&nodes[2], &nodes[1], chan_b, &nodes[0], chan_a, 1_000, &mut payment_id); },
1074 0x58 => { send_payment(&nodes[0], &nodes[1], chan_a, 100, &mut payment_id); },
1075 0x59 => { send_payment(&nodes[1], &nodes[0], chan_a, 100, &mut payment_id); },
1076 0x5a => { send_payment(&nodes[1], &nodes[2], chan_b, 100, &mut payment_id); },
1077 0x5b => { send_payment(&nodes[2], &nodes[1], chan_b, 100, &mut payment_id); },
1078 0x5c => { send_hop_payment(&nodes[0], &nodes[1], chan_a, &nodes[2], chan_b, 100, &mut payment_id); },
1079 0x5d => { send_hop_payment(&nodes[2], &nodes[1], chan_b, &nodes[0], chan_a, 100, &mut payment_id); },
1081 0x60 => { send_payment(&nodes[0], &nodes[1], chan_a, 10, &mut payment_id); },
1082 0x61 => { send_payment(&nodes[1], &nodes[0], chan_a, 10, &mut payment_id); },
1083 0x62 => { send_payment(&nodes[1], &nodes[2], chan_b, 10, &mut payment_id); },
1084 0x63 => { send_payment(&nodes[2], &nodes[1], chan_b, 10, &mut payment_id); },
1085 0x64 => { send_hop_payment(&nodes[0], &nodes[1], chan_a, &nodes[2], chan_b, 10, &mut payment_id); },
1086 0x65 => { send_hop_payment(&nodes[2], &nodes[1], chan_b, &nodes[0], chan_a, 10, &mut payment_id); },
1088 0x68 => { send_payment(&nodes[0], &nodes[1], chan_a, 1, &mut payment_id); },
1089 0x69 => { send_payment(&nodes[1], &nodes[0], chan_a, 1, &mut payment_id); },
1090 0x6a => { send_payment(&nodes[1], &nodes[2], chan_b, 1, &mut payment_id); },
1091 0x6b => { send_payment(&nodes[2], &nodes[1], chan_b, 1, &mut payment_id); },
1092 0x6c => { send_hop_payment(&nodes[0], &nodes[1], chan_a, &nodes[2], chan_b, 1, &mut payment_id); },
1093 0x6d => { send_hop_payment(&nodes[2], &nodes[1], chan_b, &nodes[0], chan_a, 1, &mut payment_id); },
1096 let max_feerate = last_htlc_clear_fee_a * FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE as u32;
1097 if fee_est_a.ret_val.fetch_add(250, atomic::Ordering::AcqRel) + 250 > max_feerate {
1098 fee_est_a.ret_val.store(max_feerate, atomic::Ordering::Release);
1100 nodes[0].maybe_update_chan_fees();
1102 0x81 => { fee_est_a.ret_val.store(253, atomic::Ordering::Release); nodes[0].maybe_update_chan_fees(); },
1105 let max_feerate = last_htlc_clear_fee_b * FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE as u32;
1106 if fee_est_b.ret_val.fetch_add(250, atomic::Ordering::AcqRel) + 250 > max_feerate {
1107 fee_est_b.ret_val.store(max_feerate, atomic::Ordering::Release);
1109 nodes[1].maybe_update_chan_fees();
1111 0x85 => { fee_est_b.ret_val.store(253, atomic::Ordering::Release); nodes[1].maybe_update_chan_fees(); },
1114 let max_feerate = last_htlc_clear_fee_c * FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE as u32;
1115 if fee_est_c.ret_val.fetch_add(250, atomic::Ordering::AcqRel) + 250 > max_feerate {
1116 fee_est_c.ret_val.store(max_feerate, atomic::Ordering::Release);
1118 nodes[2].maybe_update_chan_fees();
1120 0x89 => { fee_est_c.ret_val.store(253, atomic::Ordering::Release); nodes[2].maybe_update_chan_fees(); },
1123 // Test that no channel is in a stuck state where neither party can send funds even
1124 // after we resolve all pending events.
1125 // First make sure there are no pending monitor updates, resetting the error state
1126 // and calling force_channel_monitor_updated for each monitor.
1127 *monitor_a.persister.update_ret.lock().unwrap() = ChannelMonitorUpdateStatus::Completed;
1128 *monitor_b.persister.update_ret.lock().unwrap() = ChannelMonitorUpdateStatus::Completed;
1129 *monitor_c.persister.update_ret.lock().unwrap() = ChannelMonitorUpdateStatus::Completed;
1131 if let Some((id, _)) = monitor_a.latest_monitors.lock().unwrap().get(&chan_1_funding) {
1132 monitor_a.chain_monitor.force_channel_monitor_updated(chan_1_funding, *id);
1133 nodes[0].process_monitor_events();
1135 if let Some((id, _)) = monitor_b.latest_monitors.lock().unwrap().get(&chan_1_funding) {
1136 monitor_b.chain_monitor.force_channel_monitor_updated(chan_1_funding, *id);
1137 nodes[1].process_monitor_events();
1139 if let Some((id, _)) = monitor_b.latest_monitors.lock().unwrap().get(&chan_2_funding) {
1140 monitor_b.chain_monitor.force_channel_monitor_updated(chan_2_funding, *id);
1141 nodes[1].process_monitor_events();
1143 if let Some((id, _)) = monitor_c.latest_monitors.lock().unwrap().get(&chan_2_funding) {
1144 monitor_c.chain_monitor.force_channel_monitor_updated(chan_2_funding, *id);
1145 nodes[2].process_monitor_events();
1148 // Next, make sure peers are all connected to each other
1149 if chan_a_disconnected {
1150 nodes[0].peer_connected(&nodes[1].get_our_node_id(), &Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
1151 nodes[1].peer_connected(&nodes[0].get_our_node_id(), &Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
1152 chan_a_disconnected = false;
1154 if chan_b_disconnected {
1155 nodes[1].peer_connected(&nodes[2].get_our_node_id(), &Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
1156 nodes[2].peer_connected(&nodes[1].get_our_node_id(), &Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
1157 chan_b_disconnected = false;
1160 for i in 0..std::usize::MAX {
1161 if i == 100 { panic!("It may take may iterations to settle the state, but it should not take forever"); }
1162 // Then, make sure any current forwards make their way to their destination
1163 if process_msg_events!(0, false, ProcessMessages::AllMessages) { continue; }
1164 if process_msg_events!(1, false, ProcessMessages::AllMessages) { continue; }
1165 if process_msg_events!(2, false, ProcessMessages::AllMessages) { continue; }
1166 // ...making sure any pending PendingHTLCsForwardable events are handled and
1167 // payments claimed.
1168 if process_events!(0, false) { continue; }
1169 if process_events!(1, false) { continue; }
1170 if process_events!(2, false) { continue; }
1174 // Finally, make sure that at least one end of each channel can make a substantial payment
1176 send_payment(&nodes[0], &nodes[1], chan_a, 10_000_000, &mut payment_id) ||
1177 send_payment(&nodes[1], &nodes[0], chan_a, 10_000_000, &mut payment_id));
1179 send_payment(&nodes[1], &nodes[2], chan_b, 10_000_000, &mut payment_id) ||
1180 send_payment(&nodes[2], &nodes[1], chan_b, 10_000_000, &mut payment_id));
1182 last_htlc_clear_fee_a = fee_est_a.ret_val.load(atomic::Ordering::Acquire);
1183 last_htlc_clear_fee_b = fee_est_b.ret_val.load(atomic::Ordering::Acquire);
1184 last_htlc_clear_fee_c = fee_est_c.ret_val.load(atomic::Ordering::Acquire);
1186 _ => test_return!(),
1189 node_a_ser.0.clear();
1190 nodes[0].write(&mut node_a_ser).unwrap();
1191 monitor_a.should_update_manager.store(false, atomic::Ordering::Relaxed);
1192 node_b_ser.0.clear();
1193 nodes[1].write(&mut node_b_ser).unwrap();
1194 monitor_b.should_update_manager.store(false, atomic::Ordering::Relaxed);
1195 node_c_ser.0.clear();
1196 nodes[2].write(&mut node_c_ser).unwrap();
1197 monitor_c.should_update_manager.store(false, atomic::Ordering::Relaxed);
1201 /// We actually have different behavior based on if a certain log string has been seen, so we have
1202 /// to do a bit more tracking.
1204 struct SearchingOutput<O: Output> {
1206 may_fail: Arc<atomic::AtomicBool>,
1208 impl<O: Output> Output for SearchingOutput<O> {
1209 fn locked_write(&self, data: &[u8]) {
1210 // We hit a design limitation of LN state machine (see CONCURRENT_INBOUND_HTLC_FEE_BUFFER)
1211 if std::str::from_utf8(data).unwrap().contains("Outbound update_fee HTLC buffer overflow - counterparty should force-close this channel") {
1212 self.may_fail.store(true, atomic::Ordering::Release);
1214 self.output.locked_write(data)
1217 impl<O: Output> SearchingOutput<O> {
1218 pub fn new(output: O) -> Self {
1219 Self { output, may_fail: Arc::new(atomic::AtomicBool::new(false)) }
1223 pub fn chanmon_consistency_test<Out: Output>(data: &[u8], out: Out) {
1228 pub extern "C" fn chanmon_consistency_run(data: *const u8, datalen: usize) {
1229 do_test(unsafe { std::slice::from_raw_parts(data, datalen) }, test_logger::DevNull{});