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, hash_map, 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 static mut IN_RESTORE: bool = false;
84 pub struct TestChannelMonitor {
85 pub simple_monitor: Arc<channelmonitor::SimpleManyChannelMonitor<OutPoint>>,
86 pub update_ret: Mutex<Result<(), channelmonitor::ChannelMonitorUpdateErr>>,
87 pub latest_good_update: Mutex<HashMap<OutPoint, Vec<u8>>>,
88 pub latest_update_good: Mutex<HashMap<OutPoint, bool>>,
89 pub latest_updates_good_at_last_ser: Mutex<HashMap<OutPoint, bool>>,
90 pub should_update_manager: atomic::AtomicBool,
92 impl TestChannelMonitor {
93 pub fn new(chain_monitor: Arc<chaininterface::ChainWatchInterface>, broadcaster: Arc<chaininterface::BroadcasterInterface>, logger: Arc<Logger>, feeest: Arc<chaininterface::FeeEstimator>) -> Self {
95 simple_monitor: channelmonitor::SimpleManyChannelMonitor::new(chain_monitor, broadcaster, logger, feeest),
96 update_ret: Mutex::new(Ok(())),
97 latest_good_update: Mutex::new(HashMap::new()),
98 latest_update_good: Mutex::new(HashMap::new()),
99 latest_updates_good_at_last_ser: Mutex::new(HashMap::new()),
100 should_update_manager: atomic::AtomicBool::new(false),
104 impl channelmonitor::ManyChannelMonitor for TestChannelMonitor {
105 fn add_update_monitor(&self, funding_txo: OutPoint, monitor: channelmonitor::ChannelMonitor) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
106 let ret = self.update_ret.lock().unwrap().clone();
107 if let Ok(()) = ret {
108 let mut ser = VecWriter(Vec::new());
109 monitor.write_for_disk(&mut ser).unwrap();
110 self.latest_good_update.lock().unwrap().insert(funding_txo, ser.0);
111 match self.latest_update_good.lock().unwrap().entry(funding_txo) {
112 hash_map::Entry::Vacant(mut e) => { e.insert(true); },
113 hash_map::Entry::Occupied(mut e) => {
114 if !e.get() && unsafe { IN_RESTORE } {
115 // Technically we can't consider an update to be "good" unless we're doing
116 // it in response to a test_restore_channel_monitor as the channel may
117 // still be waiting on such a call, so only set us to good if we're in the
118 // middle of a restore call.
123 self.should_update_manager.store(true, atomic::Ordering::Relaxed);
125 self.latest_update_good.lock().unwrap().insert(funding_txo, false);
127 assert!(self.simple_monitor.add_update_monitor(funding_txo, monitor).is_ok());
131 fn fetch_pending_htlc_updated(&self) -> Vec<HTLCUpdate> {
132 return self.simple_monitor.fetch_pending_htlc_updated();
138 session_id: atomic::AtomicU8,
139 channel_id: atomic::AtomicU8,
141 impl KeysInterface for KeyProvider {
142 fn get_node_secret(&self) -> SecretKey {
143 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()
146 fn get_destination_script(&self) -> Script {
147 let secp_ctx = Secp256k1::signing_only();
148 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();
149 let our_channel_monitor_claim_key_hash = Hash160::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
150 Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script()
153 fn get_shutdown_pubkey(&self) -> PublicKey {
154 let secp_ctx = Secp256k1::signing_only();
155 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())
158 fn get_channel_keys(&self, _inbound: bool) -> ChannelKeys {
160 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(),
161 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(),
162 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(),
163 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(),
164 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(),
165 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],
169 fn get_session_key(&self) -> SecretKey {
170 let id = self.session_id.fetch_add(1, atomic::Ordering::Relaxed);
171 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()
174 fn get_channel_id(&self) -> [u8; 32] {
175 let id = self.channel_id.fetch_add(1, atomic::Ordering::Relaxed);
176 [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]
181 pub fn do_test(data: &[u8]) {
182 let fee_est = Arc::new(FuzzEstimator{});
183 let broadcast = Arc::new(TestBroadcaster{});
185 macro_rules! make_node {
186 ($node_id: expr) => { {
187 let logger: Arc<Logger> = Arc::new(test_logger::TestLogger::new($node_id.to_string()));
188 let watch = Arc::new(ChainWatchInterfaceUtil::new(Network::Bitcoin, Arc::clone(&logger)));
189 let monitor = Arc::new(TestChannelMonitor::new(watch.clone(), broadcast.clone(), logger.clone(), fee_est.clone()));
191 let keys_manager = Arc::new(KeyProvider { node_id: $node_id, session_id: atomic::AtomicU8::new(0), channel_id: atomic::AtomicU8::new(0) });
192 let mut config = UserConfig::new();
193 config.channel_options.fee_proportional_millionths = 0;
194 config.channel_options.announced_channel = true;
195 config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
196 (ChannelManager::new(Network::Bitcoin, fee_est.clone(), monitor.clone(), watch.clone(), broadcast.clone(), Arc::clone(&logger), keys_manager.clone(), config).unwrap(),
201 macro_rules! reload_node {
202 ($ser: expr, $node_id: expr, $old_monitors: expr) => { {
203 let logger: Arc<Logger> = Arc::new(test_logger::TestLogger::new($node_id.to_string()));
204 let watch = Arc::new(ChainWatchInterfaceUtil::new(Network::Bitcoin, Arc::clone(&logger)));
205 let monitor = Arc::new(TestChannelMonitor::new(watch.clone(), broadcast.clone(), logger.clone(), fee_est.clone()));
207 let keys_manager = Arc::new(KeyProvider { node_id: $node_id, session_id: atomic::AtomicU8::new(0), channel_id: atomic::AtomicU8::new(0) });
208 let mut config = UserConfig::new();
209 config.channel_options.fee_proportional_millionths = 0;
210 config.channel_options.announced_channel = true;
211 config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
213 let mut monitors = HashMap::new();
214 let mut old_monitors = $old_monitors.latest_good_update.lock().unwrap();
215 for (outpoint, monitor_ser) in old_monitors.drain() {
216 monitors.insert(outpoint, <(Sha256d, ChannelMonitor)>::read(&mut Cursor::new(&monitor_ser), Arc::clone(&logger)).expect("Failed to read monitor").1);
217 monitor.latest_good_update.lock().unwrap().insert(outpoint, monitor_ser);
219 let mut monitor_refs = HashMap::new();
220 for (outpoint, monitor) in monitors.iter() {
221 monitor_refs.insert(*outpoint, monitor);
224 let read_args = ChannelManagerReadArgs {
226 fee_estimator: fee_est.clone(),
227 monitor: monitor.clone(),
228 chain_monitor: watch,
229 tx_broadcaster: broadcast.clone(),
231 default_config: config,
232 channel_monitors: &monitor_refs,
235 let res = (<(Sha256d, ChannelManager)>::read(&mut Cursor::new(&$ser.0), read_args).expect("Failed to read manager").1, monitor);
236 for (_, was_good) in $old_monitors.latest_updates_good_at_last_ser.lock().unwrap().iter() {
238 // If the last time we updated a monitor we didn't successfully update (and we
239 // have sense updated our serialized copy of the ChannelManager) we may
240 // force-close the channel on our counterparty cause we know we're missing
241 // something. Thus, we just return here since we can't continue to test.
250 let mut channel_txn = Vec::new();
251 macro_rules! make_channel {
252 ($source: expr, $dest: expr, $chan_id: expr) => { {
253 $source.create_channel($dest.get_our_node_id(), 10000000, 42, 0).unwrap();
255 let events = $source.get_and_clear_pending_msg_events();
256 assert_eq!(events.len(), 1);
257 if let events::MessageSendEvent::SendOpenChannel { ref msg, .. } = events[0] {
259 } else { panic!("Wrong event type"); }
262 $dest.handle_open_channel(&$source.get_our_node_id(), LocalFeatures::new(), &open_channel).unwrap();
263 let accept_channel = {
264 let events = $dest.get_and_clear_pending_msg_events();
265 assert_eq!(events.len(), 1);
266 if let events::MessageSendEvent::SendAcceptChannel { ref msg, .. } = events[0] {
268 } else { panic!("Wrong event type"); }
271 $source.handle_accept_channel(&$dest.get_our_node_id(), LocalFeatures::new(), &accept_channel).unwrap();
273 let events = $source.get_and_clear_pending_events();
274 assert_eq!(events.len(), 1);
275 if let events::Event::FundingGenerationReady { ref temporary_channel_id, ref channel_value_satoshis, ref output_script, .. } = events[0] {
276 let tx = Transaction { version: $chan_id, lock_time: 0, input: Vec::new(), output: vec![TxOut {
277 value: *channel_value_satoshis, script_pubkey: output_script.clone(),
279 let funding_output = OutPoint::new(tx.txid(), 0);
280 $source.funding_transaction_generated(&temporary_channel_id, funding_output);
281 channel_txn.push(tx);
282 } else { panic!("Wrong event type"); }
285 let funding_created = {
286 let events = $source.get_and_clear_pending_msg_events();
287 assert_eq!(events.len(), 1);
288 if let events::MessageSendEvent::SendFundingCreated { ref msg, .. } = events[0] {
290 } else { panic!("Wrong event type"); }
292 $dest.handle_funding_created(&$source.get_our_node_id(), &funding_created).unwrap();
294 let funding_signed = {
295 let events = $dest.get_and_clear_pending_msg_events();
296 assert_eq!(events.len(), 1);
297 if let events::MessageSendEvent::SendFundingSigned { ref msg, .. } = events[0] {
299 } else { panic!("Wrong event type"); }
301 $source.handle_funding_signed(&$dest.get_our_node_id(), &funding_signed).unwrap();
304 let events = $source.get_and_clear_pending_events();
305 assert_eq!(events.len(), 1);
306 if let events::Event::FundingBroadcastSafe { .. } = events[0] {
307 } else { panic!("Wrong event type"); }
312 macro_rules! confirm_txn {
314 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
315 let mut txn = Vec::with_capacity(channel_txn.len());
316 let mut posn = Vec::with_capacity(channel_txn.len());
317 for i in 0..channel_txn.len() {
318 txn.push(&channel_txn[i]);
319 posn.push(i as u32 + 1);
321 $node.block_connected(&header, 1, &txn, &posn);
323 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
324 $node.block_connected(&header, i, &Vec::new(), &[0; 0]);
329 macro_rules! lock_fundings {
330 ($nodes: expr) => { {
331 let mut node_events = Vec::new();
332 for node in $nodes.iter() {
333 node_events.push(node.get_and_clear_pending_msg_events());
335 for (idx, node_event) in node_events.iter().enumerate() {
336 for event in node_event {
337 if let events::MessageSendEvent::SendFundingLocked { ref node_id, ref msg } = event {
338 for node in $nodes.iter() {
339 if node.get_our_node_id() == *node_id {
340 node.handle_funding_locked(&$nodes[idx].get_our_node_id(), msg).unwrap();
343 } else { panic!("Wrong event type"); }
347 for node in $nodes.iter() {
348 let events = node.get_and_clear_pending_msg_events();
349 for event in events {
350 if let events::MessageSendEvent::SendAnnouncementSignatures { .. } = event {
351 } else { panic!("Wrong event type"); }
357 // 3 nodes is enough to hit all the possible cases, notably unknown-source-unknown-dest
359 let (mut node_a, mut monitor_a) = make_node!(0);
360 let (mut node_b, mut monitor_b) = make_node!(1);
361 let (mut node_c, mut monitor_c) = make_node!(2);
363 let mut nodes = [node_a, node_b, node_c];
365 make_channel!(nodes[0], nodes[1], 0);
366 make_channel!(nodes[1], nodes[2], 1);
368 for node in nodes.iter() {
372 lock_fundings!(nodes);
374 let chan_a = nodes[0].list_usable_channels()[0].short_channel_id.unwrap();
375 let chan_b = nodes[2].list_usable_channels()[0].short_channel_id.unwrap();
377 let mut payment_id = 0;
379 let mut chan_a_disconnected = false;
380 let mut chan_b_disconnected = false;
381 let mut ba_events = Vec::new();
382 let mut bc_events = Vec::new();
384 let mut node_a_ser = VecWriter(Vec::new());
385 nodes[0].write(&mut node_a_ser).unwrap();
386 let mut node_b_ser = VecWriter(Vec::new());
387 nodes[1].write(&mut node_b_ser).unwrap();
388 let mut node_c_ser = VecWriter(Vec::new());
389 nodes[2].write(&mut node_c_ser).unwrap();
391 macro_rules! test_err {
395 Err(HandleError { action: Some(ErrorAction::IgnoreError), .. }) => { },
396 _ => { $res.unwrap() },
401 macro_rules! test_return {
403 assert_eq!(nodes[0].list_channels().len(), 1);
404 assert_eq!(nodes[1].list_channels().len(), 2);
405 assert_eq!(nodes[2].list_channels().len(), 1);
410 let mut read_pos = 0;
411 macro_rules! get_slice {
414 let slice_len = $len as usize;
415 if data.len() < read_pos + slice_len {
418 read_pos += slice_len;
419 &data[read_pos - slice_len..read_pos]
425 macro_rules! send_payment {
426 ($source: expr, $dest: expr) => { {
427 let payment_hash = Sha256::hash(&[payment_id; 1]);
428 payment_id = payment_id.wrapping_add(1);
429 if let Err(_) = $source.send_payment(Route {
430 hops: vec![RouteHop {
431 pubkey: $dest.0.get_our_node_id(),
432 short_channel_id: $dest.1,
434 cltv_expiry_delta: 200,
436 }, PaymentHash(payment_hash.into_inner())) {
437 // Probably ran out of funds
441 ($source: expr, $middle: expr, $dest: expr) => { {
442 let payment_hash = Sha256::hash(&[payment_id; 1]);
443 payment_id = payment_id.wrapping_add(1);
444 if let Err(_) = $source.send_payment(Route {
445 hops: vec![RouteHop {
446 pubkey: $middle.0.get_our_node_id(),
447 short_channel_id: $middle.1,
449 cltv_expiry_delta: 100,
451 pubkey: $dest.0.get_our_node_id(),
452 short_channel_id: $dest.1,
454 cltv_expiry_delta: 200,
456 }, PaymentHash(payment_hash.into_inner())) {
457 // Probably ran out of funds
463 macro_rules! process_msg_events {
464 ($node: expr, $corrupt_forward: expr) => { {
465 let events = if $node == 1 {
466 let mut new_events = Vec::new();
467 mem::swap(&mut new_events, &mut ba_events);
468 new_events.extend_from_slice(&bc_events[..]);
471 } else { Vec::new() };
472 for event in events.iter().chain(nodes[$node].get_and_clear_pending_msg_events().iter()) {
474 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 } } => {
475 for dest in nodes.iter() {
476 if dest.get_our_node_id() == *node_id {
477 assert!(update_fee.is_none());
478 for update_add in update_add_htlcs {
479 if !$corrupt_forward {
480 test_err!(dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &update_add));
482 // Corrupt the update_add_htlc message so that its HMAC
483 // check will fail and we generate a
484 // update_fail_malformed_htlc instead of an
485 // update_fail_htlc as we do when we reject a payment.
486 let mut msg_ser = update_add.encode();
487 msg_ser[1000] ^= 0xff;
488 let new_msg = UpdateAddHTLC::read(&mut Cursor::new(&msg_ser)).unwrap();
489 test_err!(dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &new_msg));
492 for update_fulfill in update_fulfill_htlcs {
493 test_err!(dest.handle_update_fulfill_htlc(&nodes[$node].get_our_node_id(), &update_fulfill));
495 for update_fail in update_fail_htlcs {
496 test_err!(dest.handle_update_fail_htlc(&nodes[$node].get_our_node_id(), &update_fail));
498 for update_fail_malformed in update_fail_malformed_htlcs {
499 test_err!(dest.handle_update_fail_malformed_htlc(&nodes[$node].get_our_node_id(), &update_fail_malformed));
501 test_err!(dest.handle_commitment_signed(&nodes[$node].get_our_node_id(), &commitment_signed));
505 events::MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
506 for dest in nodes.iter() {
507 if dest.get_our_node_id() == *node_id {
508 test_err!(dest.handle_revoke_and_ack(&nodes[$node].get_our_node_id(), msg));
512 events::MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } => {
513 for dest in nodes.iter() {
514 if dest.get_our_node_id() == *node_id {
515 test_err!(dest.handle_channel_reestablish(&nodes[$node].get_our_node_id(), msg));
519 events::MessageSendEvent::SendFundingLocked { .. } => {
520 // Can be generated as a reestablish response
522 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {
523 // Can be generated due to a payment forward being rejected due to a
524 // channel having previously failed a monitor update
526 _ => panic!("Unhandled message event"),
532 macro_rules! drain_msg_events_on_disconnect {
533 ($counterparty_id: expr) => { {
534 if $counterparty_id == 0 {
535 for event in nodes[0].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 for event in nodes[2].get_and_clear_pending_msg_events() {
549 events::MessageSendEvent::UpdateHTLCs { .. } => {},
550 events::MessageSendEvent::SendRevokeAndACK { .. } => {},
551 events::MessageSendEvent::SendChannelReestablish { .. } => {},
552 events::MessageSendEvent::SendFundingLocked { .. } => {},
553 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
554 _ => panic!("Unhandled message event"),
559 let mut events = nodes[1].get_and_clear_pending_msg_events();
560 let drop_node_id = if $counterparty_id == 0 { nodes[0].get_our_node_id() } else { nodes[2].get_our_node_id() };
561 let msg_sink = if $counterparty_id == 0 { &mut bc_events } else { &mut ba_events };
562 for event in events.drain(..) {
563 let push = match event {
564 events::MessageSendEvent::UpdateHTLCs { ref node_id, .. } => {
565 if *node_id != drop_node_id { true } else { false }
567 events::MessageSendEvent::SendRevokeAndACK { ref node_id, .. } => {
568 if *node_id != drop_node_id { true } else { false }
570 events::MessageSendEvent::SendChannelReestablish { ref node_id, .. } => {
571 if *node_id != drop_node_id { true } else { false }
573 events::MessageSendEvent::SendFundingLocked { .. } => false,
574 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => false,
575 _ => panic!("Unhandled message event"),
577 if push { msg_sink.push(event); }
582 macro_rules! process_events {
583 ($node: expr, $fail: expr) => { {
584 // In case we get 256 payments we may have a hash collision, resulting in the
585 // second claim/fail call not finding the duplicate-hash HTLC, so we have to
586 // deduplicate the calls here.
587 let mut claim_set = HashSet::new();
588 let mut events = nodes[$node].get_and_clear_pending_events();
589 // Sort events so that PendingHTLCsForwardable get processed last. This avoids a
590 // case where we first process a PendingHTLCsForwardable, then claim/fail on a
591 // PaymentReceived, claiming/failing two HTLCs, but leaving a just-generated
592 // PaymentReceived event for the second HTLC in our pending_events (and breaking
593 // our claim_set deduplication).
594 events.sort_by(|a, b| {
595 if let events::Event::PaymentReceived { .. } = a {
596 if let events::Event::PendingHTLCsForwardable { .. } = b {
598 } else { Ordering::Equal }
599 } else if let events::Event::PendingHTLCsForwardable { .. } = a {
600 if let events::Event::PaymentReceived { .. } = b {
602 } else { Ordering::Equal }
603 } else { Ordering::Equal }
605 for event in events.drain(..) {
607 events::Event::PaymentReceived { payment_hash, .. } => {
608 if claim_set.insert(payment_hash.0) {
610 assert!(nodes[$node].fail_htlc_backwards(&payment_hash));
612 assert!(nodes[$node].claim_funds(PaymentPreimage(payment_hash.0)));
616 events::Event::PaymentSent { .. } => {},
617 events::Event::PaymentFailed { .. } => {},
618 events::Event::PendingHTLCsForwardable { .. } => {
619 nodes[$node].process_pending_htlc_forwards();
621 _ => panic!("Unhandled event"),
627 match get_slice!(1)[0] {
628 0x00 => *monitor_a.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
629 0x01 => *monitor_b.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
630 0x02 => *monitor_c.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
631 0x03 => *monitor_a.update_ret.lock().unwrap() = Ok(()),
632 0x04 => *monitor_b.update_ret.lock().unwrap() = Ok(()),
633 0x05 => *monitor_c.update_ret.lock().unwrap() = Ok(()),
634 0x06 => { unsafe { IN_RESTORE = true }; nodes[0].test_restore_channel_monitor(); unsafe { IN_RESTORE = false }; },
635 0x07 => { unsafe { IN_RESTORE = true }; nodes[1].test_restore_channel_monitor(); unsafe { IN_RESTORE = false }; },
636 0x08 => { unsafe { IN_RESTORE = true }; nodes[2].test_restore_channel_monitor(); unsafe { IN_RESTORE = false }; },
637 0x09 => send_payment!(nodes[0], (&nodes[1], chan_a)),
638 0x0a => send_payment!(nodes[1], (&nodes[0], chan_a)),
639 0x0b => send_payment!(nodes[1], (&nodes[2], chan_b)),
640 0x0c => send_payment!(nodes[2], (&nodes[1], chan_b)),
641 0x0d => send_payment!(nodes[0], (&nodes[1], chan_a), (&nodes[2], chan_b)),
642 0x0e => send_payment!(nodes[2], (&nodes[1], chan_b), (&nodes[0], chan_a)),
644 if !chan_a_disconnected {
645 nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
646 nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
647 chan_a_disconnected = true;
648 drain_msg_events_on_disconnect!(0);
652 if !chan_b_disconnected {
653 nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
654 nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
655 chan_b_disconnected = true;
656 drain_msg_events_on_disconnect!(2);
660 if chan_a_disconnected {
661 nodes[0].peer_connected(&nodes[1].get_our_node_id());
662 nodes[1].peer_connected(&nodes[0].get_our_node_id());
663 chan_a_disconnected = false;
667 if chan_b_disconnected {
668 nodes[1].peer_connected(&nodes[2].get_our_node_id());
669 nodes[2].peer_connected(&nodes[1].get_our_node_id());
670 chan_b_disconnected = false;
673 0x13 => process_msg_events!(0, true),
674 0x14 => process_msg_events!(0, false),
675 0x15 => process_events!(0, true),
676 0x16 => process_events!(0, false),
677 0x17 => process_msg_events!(1, true),
678 0x18 => process_msg_events!(1, false),
679 0x19 => process_events!(1, true),
680 0x1a => process_events!(1, false),
681 0x1b => process_msg_events!(2, true),
682 0x1c => process_msg_events!(2, false),
683 0x1d => process_events!(2, true),
684 0x1e => process_events!(2, false),
686 if !chan_a_disconnected {
687 nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
688 chan_a_disconnected = true;
689 drain_msg_events_on_disconnect!(0);
691 let (new_node_a, new_monitor_a) = reload_node!(node_a_ser, 0, monitor_a);
692 node_a = Arc::new(new_node_a);
693 nodes[0] = node_a.clone();
694 monitor_a = new_monitor_a;
697 if !chan_a_disconnected {
698 nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
699 chan_a_disconnected = true;
700 nodes[0].get_and_clear_pending_msg_events();
703 if !chan_b_disconnected {
704 nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
705 chan_b_disconnected = true;
706 nodes[2].get_and_clear_pending_msg_events();
709 let (new_node_b, new_monitor_b) = reload_node!(node_b_ser, 1, monitor_b);
710 node_b = Arc::new(new_node_b);
711 nodes[1] = node_b.clone();
712 monitor_b = new_monitor_b;
715 if !chan_b_disconnected {
716 nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
717 chan_b_disconnected = true;
718 drain_msg_events_on_disconnect!(2);
720 let (new_node_c, new_monitor_c) = reload_node!(node_c_ser, 2, monitor_c);
721 node_c = Arc::new(new_node_c);
722 nodes[2] = node_c.clone();
723 monitor_c = new_monitor_c;
728 if monitor_a.should_update_manager.load(atomic::Ordering::Relaxed) {
729 node_a_ser.0.clear();
730 nodes[0].write(&mut node_a_ser).unwrap();
731 monitor_a.should_update_manager.store(false, atomic::Ordering::Relaxed);
732 *monitor_a.latest_updates_good_at_last_ser.lock().unwrap() = monitor_a.latest_update_good.lock().unwrap().clone();
734 if monitor_b.should_update_manager.load(atomic::Ordering::Relaxed) {
735 node_b_ser.0.clear();
736 nodes[1].write(&mut node_b_ser).unwrap();
737 monitor_b.should_update_manager.store(false, atomic::Ordering::Relaxed);
738 *monitor_b.latest_updates_good_at_last_ser.lock().unwrap() = monitor_b.latest_update_good.lock().unwrap().clone();
740 if monitor_c.should_update_manager.load(atomic::Ordering::Relaxed) {
741 node_c_ser.0.clear();
742 nodes[2].write(&mut node_c_ser).unwrap();
743 monitor_c.should_update_manager.store(false, atomic::Ordering::Relaxed);
744 *monitor_c.latest_updates_good_at_last_ser.lock().unwrap() = monitor_c.latest_update_good.lock().unwrap().clone();
749 #[cfg(feature = "afl")]
750 #[macro_use] extern crate afl;
751 #[cfg(feature = "afl")]
758 #[cfg(feature = "honggfuzz")]
759 #[macro_use] extern crate honggfuzz;
760 #[cfg(feature = "honggfuzz")]
769 #[cfg(feature = "libfuzzer_fuzz")]
770 #[macro_use] extern crate libfuzzer_sys;
771 #[cfg(feature = "libfuzzer_fuzz")]
772 fuzz_target!(|data: &[u8]| {
780 fn duplicate_crash() {
781 super::do_test(&::hex::decode("00").unwrap());