1 //! Test that monitor update failures don't get our channel state out of sync.
2 //! One of the biggest concern with the monitor update failure handling code is that messages
3 //! resent after monitor updating is restored are delivered out-of-order, resulting in
4 //! commitment_signed messages having "invalid signatures".
5 //! To test this we stand up a network of three nodes and read bytes from the fuzz input to denote
6 //! actions such as sending payments, handling events, or changing monitor update return values on
7 //! a per-node basis. This should allow it to find any cases where the ordering of actions results
8 //! in us getting out of sync with ourselves, and, assuming at least one of our recieve- or
9 //! send-side handling is correct, other peers. We consider it a failure if any action results in a
10 //! channel being force-closed.
12 //Uncomment this for libfuzzer builds:
16 extern crate bitcoin_hashes;
17 extern crate lightning;
18 extern crate secp256k1;
20 use bitcoin::BitcoinHash;
21 use bitcoin::blockdata::block::BlockHeader;
22 use bitcoin::blockdata::transaction::{Transaction, TxOut};
23 use bitcoin::blockdata::script::{Builder, Script};
24 use bitcoin::blockdata::opcodes;
25 use bitcoin::network::constants::Network;
27 use bitcoin_hashes::Hash as TraitImport;
28 use bitcoin_hashes::hash160::Hash as Hash160;
29 use bitcoin_hashes::sha256::Hash as Sha256;
30 use bitcoin_hashes::sha256d::Hash as Sha256d;
32 use lightning::chain::chaininterface;
33 use lightning::chain::transaction::OutPoint;
34 use lightning::chain::chaininterface::{BroadcasterInterface,ConfirmationTarget,ChainListener,FeeEstimator,ChainWatchInterfaceUtil};
35 use lightning::chain::keysinterface::{ChannelKeys, KeysInterface};
36 use lightning::ln::channelmonitor;
37 use lightning::ln::channelmonitor::{ChannelMonitor, ChannelMonitorUpdateErr, HTLCUpdate};
38 use lightning::ln::channelmanager::{ChannelManager, PaymentHash, PaymentPreimage, ChannelManagerReadArgs};
39 use lightning::ln::router::{Route, RouteHop};
40 use lightning::ln::msgs::{CommitmentUpdate, ChannelMessageHandler, ErrorAction, HandleError, UpdateAddHTLC, LocalFeatures};
41 use lightning::util::events;
42 use lightning::util::logger::Logger;
43 use lightning::util::config::UserConfig;
44 use lightning::util::events::{EventsProvider, MessageSendEventsProvider};
45 use lightning::util::ser::{Readable, ReadableArgs, Writeable, Writer};
48 use utils::test_logger;
50 use secp256k1::key::{PublicKey,SecretKey};
51 use secp256k1::Secp256k1;
54 use std::cmp::Ordering;
55 use std::collections::{HashSet, HashMap};
56 use std::sync::{Arc,Mutex};
57 use std::sync::atomic;
60 struct FuzzEstimator {}
61 impl FeeEstimator for FuzzEstimator {
62 fn get_est_sat_per_1000_weight(&self, _: ConfirmationTarget) -> u64 {
67 pub struct TestBroadcaster {}
68 impl BroadcasterInterface for TestBroadcaster {
69 fn broadcast_transaction(&self, _tx: &Transaction) { }
72 pub struct VecWriter(pub Vec<u8>);
73 impl Writer for VecWriter {
74 fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
75 self.0.extend_from_slice(buf);
78 fn size_hint(&mut self, size: usize) {
79 self.0.reserve_exact(size);
83 pub struct TestChannelMonitor {
84 pub simple_monitor: Arc<channelmonitor::SimpleManyChannelMonitor<OutPoint>>,
85 pub update_ret: Mutex<Result<(), channelmonitor::ChannelMonitorUpdateErr>>,
86 pub latest_good_update: Mutex<HashMap<OutPoint, Vec<u8>>>,
87 pub latest_update_good: Mutex<HashMap<OutPoint, bool>>,
88 pub latest_updates_good_at_last_ser: Mutex<HashMap<OutPoint, bool>>,
89 pub should_update_manager: atomic::AtomicBool,
91 impl TestChannelMonitor {
92 pub fn new(chain_monitor: Arc<chaininterface::ChainWatchInterface>, broadcaster: Arc<chaininterface::BroadcasterInterface>, logger: Arc<Logger>, feeest: Arc<chaininterface::FeeEstimator>) -> Self {
94 simple_monitor: channelmonitor::SimpleManyChannelMonitor::new(chain_monitor, broadcaster, logger, feeest),
95 update_ret: Mutex::new(Ok(())),
96 latest_good_update: Mutex::new(HashMap::new()),
97 latest_update_good: Mutex::new(HashMap::new()),
98 latest_updates_good_at_last_ser: Mutex::new(HashMap::new()),
99 should_update_manager: atomic::AtomicBool::new(false),
103 impl channelmonitor::ManyChannelMonitor for TestChannelMonitor {
104 fn add_update_monitor(&self, funding_txo: OutPoint, monitor: channelmonitor::ChannelMonitor) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
105 let ret = self.update_ret.lock().unwrap().clone();
106 if let Ok(()) = ret {
107 let mut ser = VecWriter(Vec::new());
108 monitor.write_for_disk(&mut ser).unwrap();
109 self.latest_good_update.lock().unwrap().insert(funding_txo, ser.0);
110 self.latest_update_good.lock().unwrap().insert(funding_txo, true);
111 self.should_update_manager.store(true, atomic::Ordering::Relaxed);
113 self.latest_update_good.lock().unwrap().insert(funding_txo, false);
115 assert!(self.simple_monitor.add_update_monitor(funding_txo, monitor).is_ok());
119 fn fetch_pending_htlc_updated(&self) -> Vec<HTLCUpdate> {
120 return self.simple_monitor.fetch_pending_htlc_updated();
126 session_id: atomic::AtomicU8,
127 channel_id: atomic::AtomicU8,
129 impl KeysInterface for KeyProvider {
130 fn get_node_secret(&self) -> SecretKey {
131 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()
134 fn get_destination_script(&self) -> Script {
135 let secp_ctx = Secp256k1::signing_only();
136 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();
137 let our_channel_monitor_claim_key_hash = Hash160::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
138 Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script()
141 fn get_shutdown_pubkey(&self) -> PublicKey {
142 let secp_ctx = Secp256k1::signing_only();
143 PublicKey::from_secret_key(&secp_ctx, &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())
146 fn get_channel_keys(&self, _inbound: bool) -> ChannelKeys {
148 funding_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, 4, self.node_id]).unwrap(),
149 revocation_base_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, 5, self.node_id]).unwrap(),
150 payment_base_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, 6, self.node_id]).unwrap(),
151 delayed_payment_base_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, 7, self.node_id]).unwrap(),
152 htlc_base_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, 8, self.node_id]).unwrap(),
153 commitment_seed: [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, 9, self.node_id],
157 fn get_session_key(&self) -> SecretKey {
158 let id = self.session_id.fetch_add(1, atomic::Ordering::Relaxed);
159 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, id, 10, self.node_id]).unwrap()
162 fn get_channel_id(&self) -> [u8; 32] {
163 let id = self.channel_id.fetch_add(1, atomic::Ordering::Relaxed);
164 [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, id, 11, self.node_id]
169 pub fn do_test(data: &[u8]) {
170 let fee_est = Arc::new(FuzzEstimator{});
171 let broadcast = Arc::new(TestBroadcaster{});
173 macro_rules! make_node {
174 ($node_id: expr) => { {
175 let logger: Arc<Logger> = Arc::new(test_logger::TestLogger::new($node_id.to_string()));
176 let watch = Arc::new(ChainWatchInterfaceUtil::new(Network::Bitcoin, Arc::clone(&logger)));
177 let monitor = Arc::new(TestChannelMonitor::new(watch.clone(), broadcast.clone(), logger.clone(), fee_est.clone()));
179 let keys_manager = Arc::new(KeyProvider { node_id: $node_id, session_id: atomic::AtomicU8::new(0), channel_id: atomic::AtomicU8::new(0) });
180 let mut config = UserConfig::new();
181 config.channel_options.fee_proportional_millionths = 0;
182 config.channel_options.announced_channel = true;
183 config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
184 (ChannelManager::new(Network::Bitcoin, fee_est.clone(), monitor.clone(), watch.clone(), broadcast.clone(), Arc::clone(&logger), keys_manager.clone(), config).unwrap(),
189 macro_rules! reload_node {
190 ($ser: expr, $node_id: expr, $old_monitors: expr) => { {
191 let logger: Arc<Logger> = Arc::new(test_logger::TestLogger::new($node_id.to_string()));
192 let watch = Arc::new(ChainWatchInterfaceUtil::new(Network::Bitcoin, Arc::clone(&logger)));
193 let monitor = Arc::new(TestChannelMonitor::new(watch.clone(), broadcast.clone(), logger.clone(), fee_est.clone()));
195 let keys_manager = Arc::new(KeyProvider { node_id: $node_id, session_id: atomic::AtomicU8::new(0), channel_id: atomic::AtomicU8::new(0) });
196 let mut config = UserConfig::new();
197 config.channel_options.fee_proportional_millionths = 0;
198 config.channel_options.announced_channel = true;
199 config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
201 let mut monitors = HashMap::new();
202 let mut old_monitors = $old_monitors.latest_good_update.lock().unwrap();
203 for (outpoint, monitor_ser) in old_monitors.drain() {
204 monitors.insert(outpoint, <(Sha256d, ChannelMonitor)>::read(&mut Cursor::new(&monitor_ser), Arc::clone(&logger)).expect("Failed to read monitor").1);
205 monitor.latest_good_update.lock().unwrap().insert(outpoint, monitor_ser);
207 let mut monitor_refs = HashMap::new();
208 for (outpoint, monitor) in monitors.iter() {
209 monitor_refs.insert(*outpoint, monitor);
212 let read_args = ChannelManagerReadArgs {
214 fee_estimator: fee_est.clone(),
215 monitor: monitor.clone(),
216 chain_monitor: watch,
217 tx_broadcaster: broadcast.clone(),
219 default_config: config,
220 channel_monitors: &monitor_refs,
223 let res = (<(Sha256d, ChannelManager)>::read(&mut Cursor::new(&$ser.0), read_args).expect("Failed to read manager").1, monitor);
224 for (_, was_good) in $old_monitors.latest_updates_good_at_last_ser.lock().unwrap().iter() {
226 // If the last time we updated a monitor we didn't successfully update (and we
227 // have sense updated our serialized copy of the ChannelManager) we may
228 // force-close the channel on our counterparty cause we know we're missing
229 // something. Thus, we just return here since we can't continue to test.
238 let mut channel_txn = Vec::new();
239 macro_rules! make_channel {
240 ($source: expr, $dest: expr, $chan_id: expr) => { {
241 $source.create_channel($dest.get_our_node_id(), 10000000, 42, 0).unwrap();
243 let events = $source.get_and_clear_pending_msg_events();
244 assert_eq!(events.len(), 1);
245 if let events::MessageSendEvent::SendOpenChannel { ref msg, .. } = events[0] {
247 } else { panic!("Wrong event type"); }
250 $dest.handle_open_channel(&$source.get_our_node_id(), LocalFeatures::new(), &open_channel).unwrap();
251 let accept_channel = {
252 let events = $dest.get_and_clear_pending_msg_events();
253 assert_eq!(events.len(), 1);
254 if let events::MessageSendEvent::SendAcceptChannel { ref msg, .. } = events[0] {
256 } else { panic!("Wrong event type"); }
259 $source.handle_accept_channel(&$dest.get_our_node_id(), LocalFeatures::new(), &accept_channel).unwrap();
261 let events = $source.get_and_clear_pending_events();
262 assert_eq!(events.len(), 1);
263 if let events::Event::FundingGenerationReady { ref temporary_channel_id, ref channel_value_satoshis, ref output_script, .. } = events[0] {
264 let tx = Transaction { version: $chan_id, lock_time: 0, input: Vec::new(), output: vec![TxOut {
265 value: *channel_value_satoshis, script_pubkey: output_script.clone(),
267 let funding_output = OutPoint::new(tx.txid(), 0);
268 $source.funding_transaction_generated(&temporary_channel_id, funding_output);
269 channel_txn.push(tx);
270 } else { panic!("Wrong event type"); }
273 let funding_created = {
274 let events = $source.get_and_clear_pending_msg_events();
275 assert_eq!(events.len(), 1);
276 if let events::MessageSendEvent::SendFundingCreated { ref msg, .. } = events[0] {
278 } else { panic!("Wrong event type"); }
280 $dest.handle_funding_created(&$source.get_our_node_id(), &funding_created).unwrap();
282 let funding_signed = {
283 let events = $dest.get_and_clear_pending_msg_events();
284 assert_eq!(events.len(), 1);
285 if let events::MessageSendEvent::SendFundingSigned { ref msg, .. } = events[0] {
287 } else { panic!("Wrong event type"); }
289 $source.handle_funding_signed(&$dest.get_our_node_id(), &funding_signed).unwrap();
292 let events = $source.get_and_clear_pending_events();
293 assert_eq!(events.len(), 1);
294 if let events::Event::FundingBroadcastSafe { .. } = events[0] {
295 } else { panic!("Wrong event type"); }
300 macro_rules! confirm_txn {
302 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
303 let mut txn = Vec::with_capacity(channel_txn.len());
304 let mut posn = Vec::with_capacity(channel_txn.len());
305 for i in 0..channel_txn.len() {
306 txn.push(&channel_txn[i]);
307 posn.push(i as u32 + 1);
309 $node.block_connected(&header, 1, &txn, &posn);
311 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
312 $node.block_connected(&header, i, &Vec::new(), &[0; 0]);
317 macro_rules! lock_fundings {
318 ($nodes: expr) => { {
319 let mut node_events = Vec::new();
320 for node in $nodes.iter() {
321 node_events.push(node.get_and_clear_pending_msg_events());
323 for (idx, node_event) in node_events.iter().enumerate() {
324 for event in node_event {
325 if let events::MessageSendEvent::SendFundingLocked { ref node_id, ref msg } = event {
326 for node in $nodes.iter() {
327 if node.get_our_node_id() == *node_id {
328 node.handle_funding_locked(&$nodes[idx].get_our_node_id(), msg).unwrap();
331 } else { panic!("Wrong event type"); }
335 for node in $nodes.iter() {
336 let events = node.get_and_clear_pending_msg_events();
337 for event in events {
338 if let events::MessageSendEvent::SendAnnouncementSignatures { .. } = event {
339 } else { panic!("Wrong event type"); }
345 // 3 nodes is enough to hit all the possible cases, notably unknown-source-unknown-dest
347 let (mut node_a, mut monitor_a) = make_node!(0);
348 let (mut node_b, mut monitor_b) = make_node!(1);
349 let (mut node_c, mut monitor_c) = make_node!(2);
351 let mut nodes = [node_a, node_b, node_c];
353 make_channel!(nodes[0], nodes[1], 0);
354 make_channel!(nodes[1], nodes[2], 1);
356 for node in nodes.iter() {
360 lock_fundings!(nodes);
362 let chan_a = nodes[0].list_usable_channels()[0].short_channel_id.unwrap();
363 let chan_b = nodes[2].list_usable_channels()[0].short_channel_id.unwrap();
365 let mut payment_id = 0;
367 let mut chan_a_disconnected = false;
368 let mut chan_b_disconnected = false;
369 let mut ba_events = Vec::new();
370 let mut bc_events = Vec::new();
372 let mut node_a_ser = VecWriter(Vec::new());
373 nodes[0].write(&mut node_a_ser).unwrap();
374 let mut node_b_ser = VecWriter(Vec::new());
375 nodes[1].write(&mut node_b_ser).unwrap();
376 let mut node_c_ser = VecWriter(Vec::new());
377 nodes[2].write(&mut node_c_ser).unwrap();
379 macro_rules! test_err {
383 Err(HandleError { action: Some(ErrorAction::IgnoreError), .. }) => { },
384 _ => { $res.unwrap() },
389 macro_rules! test_return {
391 assert_eq!(nodes[0].list_channels().len(), 1);
392 assert_eq!(nodes[1].list_channels().len(), 2);
393 assert_eq!(nodes[2].list_channels().len(), 1);
398 let mut read_pos = 0;
399 macro_rules! get_slice {
402 let slice_len = $len as usize;
403 if data.len() < read_pos + slice_len {
406 read_pos += slice_len;
407 &data[read_pos - slice_len..read_pos]
413 macro_rules! send_payment {
414 ($source: expr, $dest: expr) => { {
415 let payment_hash = Sha256::hash(&[payment_id; 1]);
416 payment_id = payment_id.wrapping_add(1);
417 if let Err(_) = $source.send_payment(Route {
418 hops: vec![RouteHop {
419 pubkey: $dest.0.get_our_node_id(),
420 short_channel_id: $dest.1,
422 cltv_expiry_delta: 200,
424 }, PaymentHash(payment_hash.into_inner())) {
425 // Probably ran out of funds
429 ($source: expr, $middle: expr, $dest: expr) => { {
430 let payment_hash = Sha256::hash(&[payment_id; 1]);
431 payment_id = payment_id.wrapping_add(1);
432 if let Err(_) = $source.send_payment(Route {
433 hops: vec![RouteHop {
434 pubkey: $middle.0.get_our_node_id(),
435 short_channel_id: $middle.1,
437 cltv_expiry_delta: 100,
439 pubkey: $dest.0.get_our_node_id(),
440 short_channel_id: $dest.1,
442 cltv_expiry_delta: 200,
444 }, PaymentHash(payment_hash.into_inner())) {
445 // Probably ran out of funds
451 macro_rules! process_msg_events {
452 ($node: expr, $corrupt_forward: expr) => { {
453 let events = if $node == 1 {
454 let mut new_events = Vec::new();
455 mem::swap(&mut new_events, &mut ba_events);
456 new_events.extend_from_slice(&bc_events[..]);
459 } else { Vec::new() };
460 for event in events.iter().chain(nodes[$node].get_and_clear_pending_msg_events().iter()) {
462 events::MessageSendEvent::UpdateHTLCs { ref node_id, updates: CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
463 for dest in nodes.iter() {
464 if dest.get_our_node_id() == *node_id {
465 assert!(update_fee.is_none());
466 for update_add in update_add_htlcs {
467 if !$corrupt_forward {
468 test_err!(dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &update_add));
470 // Corrupt the update_add_htlc message so that its HMAC
471 // check will fail and we generate a
472 // update_fail_malformed_htlc instead of an
473 // update_fail_htlc as we do when we reject a payment.
474 let mut msg_ser = update_add.encode();
475 msg_ser[1000] ^= 0xff;
476 let new_msg = UpdateAddHTLC::read(&mut Cursor::new(&msg_ser)).unwrap();
477 test_err!(dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &new_msg));
480 for update_fulfill in update_fulfill_htlcs {
481 test_err!(dest.handle_update_fulfill_htlc(&nodes[$node].get_our_node_id(), &update_fulfill));
483 for update_fail in update_fail_htlcs {
484 test_err!(dest.handle_update_fail_htlc(&nodes[$node].get_our_node_id(), &update_fail));
486 for update_fail_malformed in update_fail_malformed_htlcs {
487 test_err!(dest.handle_update_fail_malformed_htlc(&nodes[$node].get_our_node_id(), &update_fail_malformed));
489 test_err!(dest.handle_commitment_signed(&nodes[$node].get_our_node_id(), &commitment_signed));
493 events::MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
494 for dest in nodes.iter() {
495 if dest.get_our_node_id() == *node_id {
496 test_err!(dest.handle_revoke_and_ack(&nodes[$node].get_our_node_id(), msg));
500 events::MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } => {
501 for dest in nodes.iter() {
502 if dest.get_our_node_id() == *node_id {
503 test_err!(dest.handle_channel_reestablish(&nodes[$node].get_our_node_id(), msg));
507 events::MessageSendEvent::SendFundingLocked { .. } => {
508 // Can be generated as a reestablish response
510 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {
511 // Can be generated due to a payment forward being rejected due to a
512 // channel having previously failed a monitor update
514 _ => panic!("Unhandled message event"),
520 macro_rules! drain_msg_events_on_disconnect {
521 ($counterparty_id: expr) => { {
522 if $counterparty_id == 0 {
523 for event in nodes[0].get_and_clear_pending_msg_events() {
525 events::MessageSendEvent::UpdateHTLCs { .. } => {},
526 events::MessageSendEvent::SendRevokeAndACK { .. } => {},
527 events::MessageSendEvent::SendChannelReestablish { .. } => {},
528 events::MessageSendEvent::SendFundingLocked { .. } => {},
529 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
530 _ => panic!("Unhandled message event"),
535 for event in nodes[2].get_and_clear_pending_msg_events() {
537 events::MessageSendEvent::UpdateHTLCs { .. } => {},
538 events::MessageSendEvent::SendRevokeAndACK { .. } => {},
539 events::MessageSendEvent::SendChannelReestablish { .. } => {},
540 events::MessageSendEvent::SendFundingLocked { .. } => {},
541 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
542 _ => panic!("Unhandled message event"),
547 let mut events = nodes[1].get_and_clear_pending_msg_events();
548 let drop_node_id = if $counterparty_id == 0 { nodes[0].get_our_node_id() } else { nodes[2].get_our_node_id() };
549 let msg_sink = if $counterparty_id == 0 { &mut bc_events } else { &mut ba_events };
550 for event in events.drain(..) {
551 let push = match event {
552 events::MessageSendEvent::UpdateHTLCs { ref node_id, .. } => {
553 if *node_id != drop_node_id { true } else { false }
555 events::MessageSendEvent::SendRevokeAndACK { ref node_id, .. } => {
556 if *node_id != drop_node_id { true } else { false }
558 events::MessageSendEvent::SendChannelReestablish { ref node_id, .. } => {
559 if *node_id != drop_node_id { true } else { false }
561 events::MessageSendEvent::SendFundingLocked { .. } => false,
562 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => false,
563 _ => panic!("Unhandled message event"),
565 if push { msg_sink.push(event); }
570 macro_rules! process_events {
571 ($node: expr, $fail: expr) => { {
572 // In case we get 256 payments we may have a hash collision, resulting in the
573 // second claim/fail call not finding the duplicate-hash HTLC, so we have to
574 // deduplicate the calls here.
575 let mut claim_set = HashSet::new();
576 let mut events = nodes[$node].get_and_clear_pending_events();
577 // Sort events so that PendingHTLCsForwardable get processed last. This avoids a
578 // case where we first process a PendingHTLCsForwardable, then claim/fail on a
579 // PaymentReceived, claiming/failing two HTLCs, but leaving a just-generated
580 // PaymentReceived event for the second HTLC in our pending_events (and breaking
581 // our claim_set deduplication).
582 events.sort_by(|a, b| {
583 if let events::Event::PaymentReceived { .. } = a {
584 if let events::Event::PendingHTLCsForwardable { .. } = b {
586 } else { Ordering::Equal }
587 } else if let events::Event::PendingHTLCsForwardable { .. } = a {
588 if let events::Event::PaymentReceived { .. } = b {
590 } else { Ordering::Equal }
591 } else { Ordering::Equal }
593 for event in events.drain(..) {
595 events::Event::PaymentReceived { payment_hash, .. } => {
596 if claim_set.insert(payment_hash.0) {
598 assert!(nodes[$node].fail_htlc_backwards(&payment_hash));
600 assert!(nodes[$node].claim_funds(PaymentPreimage(payment_hash.0)));
604 events::Event::PaymentSent { .. } => {},
605 events::Event::PaymentFailed { .. } => {},
606 events::Event::PendingHTLCsForwardable { .. } => {
607 nodes[$node].process_pending_htlc_forwards();
609 _ => panic!("Unhandled event"),
615 match get_slice!(1)[0] {
616 0x00 => *monitor_a.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
617 0x01 => *monitor_b.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
618 0x02 => *monitor_c.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
619 0x03 => *monitor_a.update_ret.lock().unwrap() = Ok(()),
620 0x04 => *monitor_b.update_ret.lock().unwrap() = Ok(()),
621 0x05 => *monitor_c.update_ret.lock().unwrap() = Ok(()),
622 0x06 => nodes[0].test_restore_channel_monitor(),
623 0x07 => nodes[1].test_restore_channel_monitor(),
624 0x08 => nodes[2].test_restore_channel_monitor(),
625 0x09 => send_payment!(nodes[0], (&nodes[1], chan_a)),
626 0x0a => send_payment!(nodes[1], (&nodes[0], chan_a)),
627 0x0b => send_payment!(nodes[1], (&nodes[2], chan_b)),
628 0x0c => send_payment!(nodes[2], (&nodes[1], chan_b)),
629 0x0d => send_payment!(nodes[0], (&nodes[1], chan_a), (&nodes[2], chan_b)),
630 0x0e => send_payment!(nodes[2], (&nodes[1], chan_b), (&nodes[0], chan_a)),
632 if !chan_a_disconnected {
633 nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
634 nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
635 chan_a_disconnected = true;
636 drain_msg_events_on_disconnect!(0);
640 if !chan_b_disconnected {
641 nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
642 nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
643 chan_b_disconnected = true;
644 drain_msg_events_on_disconnect!(2);
648 if chan_a_disconnected {
649 nodes[0].peer_connected(&nodes[1].get_our_node_id());
650 nodes[1].peer_connected(&nodes[0].get_our_node_id());
651 chan_a_disconnected = false;
655 if chan_b_disconnected {
656 nodes[1].peer_connected(&nodes[2].get_our_node_id());
657 nodes[2].peer_connected(&nodes[1].get_our_node_id());
658 chan_b_disconnected = false;
661 0x13 => process_msg_events!(0, true),
662 0x14 => process_msg_events!(0, false),
663 0x15 => process_events!(0, true),
664 0x16 => process_events!(0, false),
665 0x17 => process_msg_events!(1, true),
666 0x18 => process_msg_events!(1, false),
667 0x19 => process_events!(1, true),
668 0x1a => process_events!(1, false),
669 0x1b => process_msg_events!(2, true),
670 0x1c => process_msg_events!(2, false),
671 0x1d => process_events!(2, true),
672 0x1e => process_events!(2, false),
674 if !chan_a_disconnected {
675 nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
676 chan_a_disconnected = true;
677 drain_msg_events_on_disconnect!(0);
679 let (new_node_a, new_monitor_a) = reload_node!(node_a_ser, 0, monitor_a);
680 node_a = Arc::new(new_node_a);
681 nodes[0] = node_a.clone();
682 monitor_a = new_monitor_a;
685 if !chan_a_disconnected {
686 nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
687 chan_a_disconnected = true;
688 nodes[0].get_and_clear_pending_msg_events();
691 if !chan_b_disconnected {
692 nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
693 chan_b_disconnected = true;
694 nodes[2].get_and_clear_pending_msg_events();
697 let (new_node_b, new_monitor_b) = reload_node!(node_b_ser, 1, monitor_b);
698 node_b = Arc::new(new_node_b);
699 nodes[1] = node_b.clone();
700 monitor_b = new_monitor_b;
703 if !chan_b_disconnected {
704 nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
705 chan_b_disconnected = true;
706 drain_msg_events_on_disconnect!(2);
708 let (new_node_c, new_monitor_c) = reload_node!(node_c_ser, 2, monitor_c);
709 node_c = Arc::new(new_node_c);
710 nodes[2] = node_c.clone();
711 monitor_c = new_monitor_c;
716 if monitor_a.should_update_manager.load(atomic::Ordering::Relaxed) {
717 node_a_ser.0.clear();
718 nodes[0].write(&mut node_a_ser).unwrap();
719 monitor_a.should_update_manager.store(false, atomic::Ordering::Relaxed);
720 *monitor_a.latest_updates_good_at_last_ser.lock().unwrap() = monitor_a.latest_update_good.lock().unwrap().clone();
722 if monitor_b.should_update_manager.load(atomic::Ordering::Relaxed) {
723 node_b_ser.0.clear();
724 nodes[1].write(&mut node_b_ser).unwrap();
725 monitor_b.should_update_manager.store(false, atomic::Ordering::Relaxed);
726 *monitor_b.latest_updates_good_at_last_ser.lock().unwrap() = monitor_b.latest_update_good.lock().unwrap().clone();
728 if monitor_c.should_update_manager.load(atomic::Ordering::Relaxed) {
729 node_c_ser.0.clear();
730 nodes[2].write(&mut node_c_ser).unwrap();
731 monitor_c.should_update_manager.store(false, atomic::Ordering::Relaxed);
732 *monitor_c.latest_updates_good_at_last_ser.lock().unwrap() = monitor_c.latest_update_good.lock().unwrap().clone();
737 #[cfg(feature = "afl")]
738 #[macro_use] extern crate afl;
739 #[cfg(feature = "afl")]
746 #[cfg(feature = "honggfuzz")]
747 #[macro_use] extern crate honggfuzz;
748 #[cfg(feature = "honggfuzz")]
757 #[cfg(feature = "libfuzzer_fuzz")]
758 #[macro_use] extern crate libfuzzer_sys;
759 #[cfg(feature = "libfuzzer_fuzz")]
760 fuzz_target!(|data: &[u8]| {
768 fn duplicate_crash() {
769 super::do_test(&::hex::decode("00").unwrap());