_ Git - rust-lightning/blob - fuzz/src/chanmon_consistency.rs

   1 // This file is Copyright its original authors, visible in version control
   2 // history.
   3 //
   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
   8 // licenses.
   9
  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.
  20
  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;
  26
  27 use bitcoin::hashes::Hash as TraitImport;
  28 use bitcoin::hashes::sha256::Hash as Sha256;
  29 use bitcoin::hash_types::{BlockHash, WPubkeyHash};
  30
  31 use lightning::chain;
  32 use lightning::chain::chainmonitor;
  33 use lightning::chain::channelmonitor;
  34 use lightning::chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdateErr, MonitorEvent};
  35 use lightning::chain::transaction::OutPoint;
  36 use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
  37 use lightning::chain::keysinterface::{KeysInterface, InMemoryChannelKeys};
  38 use lightning::ln::channelmanager::{ChannelManager, PaymentHash, PaymentPreimage, PaymentSecret, ChannelManagerReadArgs};
  39 use lightning::ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
  40 use lightning::ln::msgs::{CommitmentUpdate, ChannelMessageHandler, ErrorAction, UpdateAddHTLC, Init};
  41 use lightning::util::enforcing_trait_impls::EnforcingChannelKeys;
  42 use lightning::util::events;
  43 use lightning::util::logger::Logger;
  44 use lightning::util::config::UserConfig;
  45 use lightning::util::events::{EventsProvider, MessageSendEventsProvider};
  46 use lightning::util::ser::{Readable, ReadableArgs, Writeable, Writer};
  47 use lightning::routing::router::{Route, RouteHop};
  48
  49
  50 use utils::test_logger;
  51 use utils::test_persister::TestPersister;
  52
  53 use bitcoin::secp256k1::key::{PublicKey,SecretKey};
  54 use bitcoin::secp256k1::Secp256k1;
  55
  56 use std::mem;
  57 use std::cmp::Ordering;
  58 use std::collections::{HashSet, hash_map, HashMap};
  59 use std::sync::{Arc,Mutex};
  60 use std::sync::atomic;
  61 use std::io::Cursor;
  62
  63 struct FuzzEstimator {}
  64 impl FeeEstimator for FuzzEstimator {
  65         fn get_est_sat_per_1000_weight(&self, _: ConfirmationTarget) -> u32 {
  66                 253
  67         }
  68 }
  69
  70 pub struct TestBroadcaster {}
  71 impl BroadcasterInterface for TestBroadcaster {
  72         fn broadcast_transaction(&self, _tx: &Transaction) { }
  73 }
  74
  75 pub struct VecWriter(pub Vec<u8>);
  76 impl Writer for VecWriter {
  77         fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
  78                 self.0.extend_from_slice(buf);
  79                 Ok(())
  80         }
  81         fn size_hint(&mut self, size: usize) {
  82                 self.0.reserve_exact(size);
  83         }
  84 }
  85
  86 struct TestChainMonitor {
  87         pub logger: Arc<dyn Logger>,
  88         pub chain_monitor: Arc<chainmonitor::ChainMonitor<EnforcingChannelKeys, Arc<dyn chain::Filter>, Arc<TestBroadcaster>, Arc<FuzzEstimator>, Arc<dyn Logger>, Arc<TestPersister>>>,
  89         pub update_ret: Mutex<Result<(), channelmonitor::ChannelMonitorUpdateErr>>,
  90         // If we reload a node with an old copy of ChannelMonitors, the ChannelManager deserialization
  91         // logic will automatically force-close our channels for us (as we don't have an up-to-date
  92         // monitor implying we are not able to punish misbehaving counterparties). Because this test
  93         // "fails" if we ever force-close a channel, we avoid doing so, always saving the latest
  94         // fully-serialized monitor state here, as well as the corresponding update_id.
  95         pub latest_monitors: Mutex<HashMap<OutPoint, (u64, Vec<u8>)>>,
  96         pub should_update_manager: atomic::AtomicBool,
  97 }
  98 impl TestChainMonitor {
  99         pub fn new(broadcaster: Arc<TestBroadcaster>, logger: Arc<dyn Logger>, feeest: Arc<FuzzEstimator>, persister: Arc<TestPersister>) -> Self {
 100                 Self {
 101                         chain_monitor: Arc::new(chainmonitor::ChainMonitor::new(None, broadcaster, logger.clone(), feeest, persister)),
 102                         logger,
 103                         update_ret: Mutex::new(Ok(())),
 104                         latest_monitors: Mutex::new(HashMap::new()),
 105                         should_update_manager: atomic::AtomicBool::new(false),
 106                 }
 107         }
 108 }
 109 impl chain::Watch for TestChainMonitor {
 110         type Keys = EnforcingChannelKeys;
 111
 112         fn watch_channel(&self, funding_txo: OutPoint, monitor: channelmonitor::ChannelMonitor<EnforcingChannelKeys>) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
 113                 let mut ser = VecWriter(Vec::new());
 114                 monitor.write_for_disk(&mut ser).unwrap();
 115                 if let Some(_) = self.latest_monitors.lock().unwrap().insert(funding_txo, (monitor.get_latest_update_id(), ser.0)) {
 116                         panic!("Already had monitor pre-watch_channel");
 117                 }
 118                 self.should_update_manager.store(true, atomic::Ordering::Relaxed);
 119                 assert!(self.chain_monitor.watch_channel(funding_txo, monitor).is_ok());
 120                 self.update_ret.lock().unwrap().clone()
 121         }
 122
 123         fn update_channel(&self, funding_txo: OutPoint, update: channelmonitor::ChannelMonitorUpdate) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
 124                 let mut map_lock = self.latest_monitors.lock().unwrap();
 125                 let mut map_entry = match map_lock.entry(funding_txo) {
 126                         hash_map::Entry::Occupied(entry) => entry,
 127                         hash_map::Entry::Vacant(_) => panic!("Didn't have monitor on update call"),
 128                 };
 129                 let mut deserialized_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingChannelKeys>)>::
 130                         read(&mut Cursor::new(&map_entry.get().1)).unwrap().1;
 131                 deserialized_monitor.update_monitor(&update, &&TestBroadcaster {}, &self.logger).unwrap();
 132                 let mut ser = VecWriter(Vec::new());
 133                 deserialized_monitor.write_for_disk(&mut ser).unwrap();
 134                 map_entry.insert((update.update_id, ser.0));
 135                 self.should_update_manager.store(true, atomic::Ordering::Relaxed);
 136                 self.update_ret.lock().unwrap().clone()
 137         }
 138
 139         fn release_pending_monitor_events(&self) -> Vec<MonitorEvent> {
 140                 return self.chain_monitor.release_pending_monitor_events();
 141         }
 142 }
 143
 144 struct KeyProvider {
 145         node_id: u8,
 146         rand_bytes_id: atomic::AtomicU8,
 147 }
 148 impl KeysInterface for KeyProvider {
 149         type ChanKeySigner = EnforcingChannelKeys;
 150
 151         fn get_node_secret(&self) -> SecretKey {
 152                 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()
 153         }
 154
 155         fn get_destination_script(&self) -> Script {
 156                 let secp_ctx = Secp256k1::signing_only();
 157                 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();
 158                 let our_channel_monitor_claim_key_hash = WPubkeyHash::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
 159                 Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script()
 160         }
 161
 162         fn get_shutdown_pubkey(&self) -> PublicKey {
 163                 let secp_ctx = Secp256k1::signing_only();
 164                 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())
 165         }
 166
 167         fn get_channel_keys(&self, _inbound: bool, channel_value_satoshis: u64) -> EnforcingChannelKeys {
 168                 let secp_ctx = Secp256k1::signing_only();
 169                 EnforcingChannelKeys::new(InMemoryChannelKeys::new(
 170                         &secp_ctx,
 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, 0, 4, self.node_id]).unwrap(),
 172                         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(),
 173                         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(),
 174                         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(),
 175                         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(),
 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, 0, 9, self.node_id],
 177                         channel_value_satoshis,
 178                         (0, 0),
 179                 ))
 180         }
 181
 182         fn get_secure_random_bytes(&self) -> [u8; 32] {
 183                 let id = self.rand_bytes_id.fetch_add(1, atomic::Ordering::Relaxed);
 184                 [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]
 185         }
 186 }
 187
 188 #[inline]
 189 pub fn do_test<Out: test_logger::Output>(data: &[u8], out: Out) {
 190         let fee_est = Arc::new(FuzzEstimator{});
 191         let broadcast = Arc::new(TestBroadcaster{});
 192
 193         macro_rules! make_node {
 194                 ($node_id: expr) => { {
 195                         let logger: Arc<dyn Logger> = Arc::new(test_logger::TestLogger::new($node_id.to_string(), out.clone()));
 196                         let monitor = Arc::new(TestChainMonitor::new(broadcast.clone(), logger.clone(), fee_est.clone(), Arc::new(TestPersister{})));
 197
 198                         let keys_manager = Arc::new(KeyProvider { node_id: $node_id, rand_bytes_id: atomic::AtomicU8::new(0) });
 199                         let mut config = UserConfig::default();
 200                         config.channel_options.fee_proportional_millionths = 0;
 201                         config.channel_options.announced_channel = true;
 202                         config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
 203                         (Arc::new(ChannelManager::new(Network::Bitcoin, fee_est.clone(), monitor.clone(), broadcast.clone(), Arc::clone(&logger), keys_manager.clone(), config, 0)),
 204                         monitor)
 205                 } }
 206         }
 207
 208         macro_rules! reload_node {
 209                 ($ser: expr, $node_id: expr, $old_monitors: expr) => { {
 210                         let logger: Arc<dyn Logger> = Arc::new(test_logger::TestLogger::new($node_id.to_string(), out.clone()));
 211                         let chain_monitor = Arc::new(TestChainMonitor::new(broadcast.clone(), logger.clone(), fee_est.clone(), Arc::new(TestPersister{})));
 212
 213                         let keys_manager = Arc::new(KeyProvider { node_id: $node_id, rand_bytes_id: atomic::AtomicU8::new(0) });
 214                         let mut config = UserConfig::default();
 215                         config.channel_options.fee_proportional_millionths = 0;
 216                         config.channel_options.announced_channel = true;
 217                         config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
 218
 219                         let mut monitors = HashMap::new();
 220                         let mut old_monitors = $old_monitors.latest_monitors.lock().unwrap();
 221                         for (outpoint, (update_id, monitor_ser)) in old_monitors.drain() {
 222                                 monitors.insert(outpoint, <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut Cursor::new(&monitor_ser)).expect("Failed to read monitor").1);
 223                                 chain_monitor.latest_monitors.lock().unwrap().insert(outpoint, (update_id, monitor_ser));
 224                         }
 225                         let mut monitor_refs = HashMap::new();
 226                         for (outpoint, monitor) in monitors.iter_mut() {
 227                                 monitor_refs.insert(*outpoint, monitor);
 228                         }
 229
 230                         let read_args = ChannelManagerReadArgs {
 231                                 keys_manager,
 232                                 fee_estimator: fee_est.clone(),
 233                                 chain_monitor: chain_monitor.clone(),
 234                                 tx_broadcaster: broadcast.clone(),
 235                                 logger,
 236                                 default_config: config,
 237                                 channel_monitors: monitor_refs,
 238                         };
 239
 240                         (<(BlockHash, ChannelManager<EnforcingChannelKeys, Arc<TestChainMonitor>, Arc<TestBroadcaster>, Arc<KeyProvider>, Arc<FuzzEstimator>, Arc<dyn Logger>>)>::read(&mut Cursor::new(&$ser.0), read_args).expect("Failed to read manager").1, chain_monitor)
 241                 } }
 242         }
 243
 244         let mut channel_txn = Vec::new();
 245         macro_rules! make_channel {
 246                 ($source: expr, $dest: expr, $chan_id: expr) => { {
 247                         $source.create_channel($dest.get_our_node_id(), 10000000, 42, 0, None).unwrap();
 248                         let open_channel = {
 249                                 let events = $source.get_and_clear_pending_msg_events();
 250                                 assert_eq!(events.len(), 1);
 251                                 if let events::MessageSendEvent::SendOpenChannel { ref msg, .. } = events[0] {
 252                                         msg.clone()
 253                                 } else { panic!("Wrong event type"); }
 254                         };
 255
 256                         $dest.handle_open_channel(&$source.get_our_node_id(), InitFeatures::known(), &open_channel);
 257                         let accept_channel = {
 258                                 let events = $dest.get_and_clear_pending_msg_events();
 259                                 assert_eq!(events.len(), 1);
 260                                 if let events::MessageSendEvent::SendAcceptChannel { ref msg, .. } = events[0] {
 261                                         msg.clone()
 262                                 } else { panic!("Wrong event type"); }
 263                         };
 264
 265                         $source.handle_accept_channel(&$dest.get_our_node_id(), InitFeatures::known(), &accept_channel);
 266                         let funding_output;
 267                         {
 268                                 let events = $source.get_and_clear_pending_events();
 269                                 assert_eq!(events.len(), 1);
 270                                 if let events::Event::FundingGenerationReady { ref temporary_channel_id, ref channel_value_satoshis, ref output_script, .. } = events[0] {
 271                                         let tx = Transaction { version: $chan_id, lock_time: 0, input: Vec::new(), output: vec![TxOut {
 272                                                 value: *channel_value_satoshis, script_pubkey: output_script.clone(),
 273                                         }]};
 274                                         funding_output = OutPoint { txid: tx.txid(), index: 0 };
 275                                         $source.funding_transaction_generated(&temporary_channel_id, funding_output);
 276                                         channel_txn.push(tx);
 277                                 } else { panic!("Wrong event type"); }
 278                         }
 279
 280                         let funding_created = {
 281                                 let events = $source.get_and_clear_pending_msg_events();
 282                                 assert_eq!(events.len(), 1);
 283                                 if let events::MessageSendEvent::SendFundingCreated { ref msg, .. } = events[0] {
 284                                         msg.clone()
 285                                 } else { panic!("Wrong event type"); }
 286                         };
 287                         $dest.handle_funding_created(&$source.get_our_node_id(), &funding_created);
 288
 289                         let funding_signed = {
 290                                 let events = $dest.get_and_clear_pending_msg_events();
 291                                 assert_eq!(events.len(), 1);
 292                                 if let events::MessageSendEvent::SendFundingSigned { ref msg, .. } = events[0] {
 293                                         msg.clone()
 294                                 } else { panic!("Wrong event type"); }
 295                         };
 296                         $source.handle_funding_signed(&$dest.get_our_node_id(), &funding_signed);
 297
 298                         {
 299                                 let events = $source.get_and_clear_pending_events();
 300                                 assert_eq!(events.len(), 1);
 301                                 if let events::Event::FundingBroadcastSafe { .. } = events[0] {
 302                                 } else { panic!("Wrong event type"); }
 303                         }
 304                         funding_output
 305                 } }
 306         }
 307
 308         macro_rules! confirm_txn {
 309                 ($node: expr) => { {
 310                         let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 311                         let txdata: Vec<_> = channel_txn.iter().enumerate().map(|(i, tx)| (i + 1, tx)).collect();
 312                         $node.block_connected(&header, &txdata, 1);
 313                         for i in 2..100 {
 314                                 header = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 315                                 $node.block_connected(&header, &[], i);
 316                         }
 317                 } }
 318         }
 319
 320         macro_rules! lock_fundings {
 321                 ($nodes: expr) => { {
 322                         let mut node_events = Vec::new();
 323                         for node in $nodes.iter() {
 324                                 node_events.push(node.get_and_clear_pending_msg_events());
 325                         }
 326                         for (idx, node_event) in node_events.iter().enumerate() {
 327                                 for event in node_event {
 328                                         if let events::MessageSendEvent::SendFundingLocked { ref node_id, ref msg } = event {
 329                                                 for node in $nodes.iter() {
 330                                                         if node.get_our_node_id() == *node_id {
 331                                                                 node.handle_funding_locked(&$nodes[idx].get_our_node_id(), msg);
 332                                                         }
 333                                                 }
 334                                         } else { panic!("Wrong event type"); }
 335                                 }
 336                         }
 337
 338                         for node in $nodes.iter() {
 339                                 let events = node.get_and_clear_pending_msg_events();
 340                                 for event in events {
 341                                         if let events::MessageSendEvent::SendAnnouncementSignatures { .. } = event {
 342                                         } else { panic!("Wrong event type"); }
 343                                 }
 344                         }
 345                 } }
 346         }
 347
 348         // 3 nodes is enough to hit all the possible cases, notably unknown-source-unknown-dest
 349         // forwarding.
 350         let (mut node_a, mut monitor_a) = make_node!(0);
 351         let (mut node_b, mut monitor_b) = make_node!(1);
 352         let (mut node_c, mut monitor_c) = make_node!(2);
 353
 354         let mut nodes = [node_a, node_b, node_c];
 355
 356         let chan_1_funding = make_channel!(nodes[0], nodes[1], 0);
 357         let chan_2_funding = make_channel!(nodes[1], nodes[2], 1);
 358
 359         for node in nodes.iter() {
 360                 confirm_txn!(node);
 361         }
 362
 363         lock_fundings!(nodes);
 364
 365         let chan_a = nodes[0].list_usable_channels()[0].short_channel_id.unwrap();
 366         let chan_b = nodes[2].list_usable_channels()[0].short_channel_id.unwrap();
 367
 368         let mut payment_id = 0;
 369
 370         let mut chan_a_disconnected = false;
 371         let mut chan_b_disconnected = false;
 372         let mut ba_events = Vec::new();
 373         let mut bc_events = Vec::new();
 374
 375         let mut node_a_ser = VecWriter(Vec::new());
 376         nodes[0].write(&mut node_a_ser).unwrap();
 377         let mut node_b_ser = VecWriter(Vec::new());
 378         nodes[1].write(&mut node_b_ser).unwrap();
 379         let mut node_c_ser = VecWriter(Vec::new());
 380         nodes[2].write(&mut node_c_ser).unwrap();
 381
 382         macro_rules! test_return {
 383                 () => { {
 384                         assert_eq!(nodes[0].list_channels().len(), 1);
 385                         assert_eq!(nodes[1].list_channels().len(), 2);
 386                         assert_eq!(nodes[2].list_channels().len(), 1);
 387                         return;
 388                 } }
 389         }
 390
 391         let mut read_pos = 0;
 392         macro_rules! get_slice {
 393                 ($len: expr) => {
 394                         {
 395                                 let slice_len = $len as usize;
 396                                 if data.len() < read_pos + slice_len {
 397                                         test_return!();
 398                                 }
 399                                 read_pos += slice_len;
 400                                 &data[read_pos - slice_len..read_pos]
 401                         }
 402                 }
 403         }
 404
 405         loop {
 406                 macro_rules! send_payment {
 407                         ($source: expr, $dest: expr, $amt: expr) => { {
 408                                 let payment_hash = Sha256::hash(&[payment_id; 1]);
 409                                 payment_id = payment_id.wrapping_add(1);
 410                                 if let Err(_) = $source.send_payment(&Route {
 411                                         paths: vec![vec![RouteHop {
 412                                                 pubkey: $dest.0.get_our_node_id(),
 413                                                 node_features: NodeFeatures::empty(),
 414                                                 short_channel_id: $dest.1,
 415                                                 channel_features: ChannelFeatures::empty(),
 416                                                 fee_msat: $amt,
 417                                                 cltv_expiry_delta: 200,
 418                                         }]],
 419                                 }, PaymentHash(payment_hash.into_inner()), &None) {
 420                                         // Probably ran out of funds
 421                                         test_return!();
 422                                 }
 423                         } };
 424                         ($source: expr, $middle: expr, $dest: expr, $amt: expr) => { {
 425                                 let payment_hash = Sha256::hash(&[payment_id; 1]);
 426                                 payment_id = payment_id.wrapping_add(1);
 427                                 if let Err(_) = $source.send_payment(&Route {
 428                                         paths: vec![vec![RouteHop {
 429                                                 pubkey: $middle.0.get_our_node_id(),
 430                                                 node_features: NodeFeatures::empty(),
 431                                                 short_channel_id: $middle.1,
 432                                                 channel_features: ChannelFeatures::empty(),
 433                                                 fee_msat: 50000,
 434                                                 cltv_expiry_delta: 100,
 435                                         },RouteHop {
 436                                                 pubkey: $dest.0.get_our_node_id(),
 437                                                 node_features: NodeFeatures::empty(),
 438                                                 short_channel_id: $dest.1,
 439                                                 channel_features: ChannelFeatures::empty(),
 440                                                 fee_msat: $amt,
 441                                                 cltv_expiry_delta: 200,
 442                                         }]],
 443                                 }, PaymentHash(payment_hash.into_inner()), &None) {
 444                                         // Probably ran out of funds
 445                                         test_return!();
 446                                 }
 447                         } }
 448                 }
 449                 macro_rules! send_payment_with_secret {
 450                         ($source: expr, $middle: expr, $dest: expr) => { {
 451                                 let payment_hash = Sha256::hash(&[payment_id; 1]);
 452                                 payment_id = payment_id.wrapping_add(1);
 453                                 let payment_secret = Sha256::hash(&[payment_id; 1]);
 454                                 payment_id = payment_id.wrapping_add(1);
 455                                 if let Err(_) = $source.send_payment(&Route {
 456                                         paths: vec![vec![RouteHop {
 457                                                 pubkey: $middle.0.get_our_node_id(),
 458                                                 node_features: NodeFeatures::empty(),
 459                                                 short_channel_id: $middle.1,
 460                                                 channel_features: ChannelFeatures::empty(),
 461                                                 fee_msat: 50000,
 462                                                 cltv_expiry_delta: 100,
 463                                         },RouteHop {
 464                                                 pubkey: $dest.0.get_our_node_id(),
 465                                                 node_features: NodeFeatures::empty(),
 466                                                 short_channel_id: $dest.1,
 467                                                 channel_features: ChannelFeatures::empty(),
 468                                                 fee_msat: 5000000,
 469                                                 cltv_expiry_delta: 200,
 470                                         }],vec![RouteHop {
 471                                                 pubkey: $middle.0.get_our_node_id(),
 472                                                 node_features: NodeFeatures::empty(),
 473                                                 short_channel_id: $middle.1,
 474                                                 channel_features: ChannelFeatures::empty(),
 475                                                 fee_msat: 50000,
 476                                                 cltv_expiry_delta: 100,
 477                                         },RouteHop {
 478                                                 pubkey: $dest.0.get_our_node_id(),
 479                                                 node_features: NodeFeatures::empty(),
 480                                                 short_channel_id: $dest.1,
 481                                                 channel_features: ChannelFeatures::empty(),
 482                                                 fee_msat: 5000000,
 483                                                 cltv_expiry_delta: 200,
 484                                         }]],
 485                                 }, PaymentHash(payment_hash.into_inner()), &Some(PaymentSecret(payment_secret.into_inner()))) {
 486                                         // Probably ran out of funds
 487                                         test_return!();
 488                                 }
 489                         } }
 490                 }
 491
 492                 macro_rules! process_msg_events {
 493                         ($node: expr, $corrupt_forward: expr) => { {
 494                                 let events = if $node == 1 {
 495                                         let mut new_events = Vec::new();
 496                                         mem::swap(&mut new_events, &mut ba_events);
 497                                         new_events.extend_from_slice(&bc_events[..]);
 498                                         bc_events.clear();
 499                                         new_events
 500                                 } else { Vec::new() };
 501                                 for event in events.iter().chain(nodes[$node].get_and_clear_pending_msg_events().iter()) {
 502                                         match event {
 503                                                 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 } } => {
 504                                                         for dest in nodes.iter() {
 505                                                                 if dest.get_our_node_id() == *node_id {
 506                                                                         assert!(update_fee.is_none());
 507                                                                         for update_add in update_add_htlcs {
 508                                                                                 if !$corrupt_forward {
 509                                                                                         dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &update_add);
 510                                                                                 } else {
 511                                                                                         // Corrupt the update_add_htlc message so that its HMAC
 512                                                                                         // check will fail and we generate a
 513                                                                                         // update_fail_malformed_htlc instead of an
 514                                                                                         // update_fail_htlc as we do when we reject a payment.
 515                                                                                         let mut msg_ser = update_add.encode();
 516                                                                                         msg_ser[1000] ^= 0xff;
 517                                                                                         let new_msg = UpdateAddHTLC::read(&mut Cursor::new(&msg_ser)).unwrap();
 518                                                                                         dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &new_msg);
 519                                                                                 }
 520                                                                         }
 521                                                                         for update_fulfill in update_fulfill_htlcs {
 522                                                                                 dest.handle_update_fulfill_htlc(&nodes[$node].get_our_node_id(), &update_fulfill);
 523                                                                         }
 524                                                                         for update_fail in update_fail_htlcs {
 525                                                                                 dest.handle_update_fail_htlc(&nodes[$node].get_our_node_id(), &update_fail);
 526                                                                         }
 527                                                                         for update_fail_malformed in update_fail_malformed_htlcs {
 528                                                                                 dest.handle_update_fail_malformed_htlc(&nodes[$node].get_our_node_id(), &update_fail_malformed);
 529                                                                         }
 530                                                                         dest.handle_commitment_signed(&nodes[$node].get_our_node_id(), &commitment_signed);
 531                                                                 }
 532                                                         }
 533                                                 },
 534                                                 events::MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
 535                                                         for dest in nodes.iter() {
 536                                                                 if dest.get_our_node_id() == *node_id {
 537                                                                         dest.handle_revoke_and_ack(&nodes[$node].get_our_node_id(), msg);
 538                                                                 }
 539                                                         }
 540                                                 },
 541                                                 events::MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } => {
 542                                                         for dest in nodes.iter() {
 543                                                                 if dest.get_our_node_id() == *node_id {
 544                                                                         dest.handle_channel_reestablish(&nodes[$node].get_our_node_id(), msg);
 545                                                                 }
 546                                                         }
 547                                                 },
 548                                                 events::MessageSendEvent::SendFundingLocked { .. } => {
 549                                                         // Can be generated as a reestablish response
 550                                                 },
 551                                                 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {
 552                                                         // Can be generated due to a payment forward being rejected due to a
 553                                                         // channel having previously failed a monitor update
 554                                                 },
 555                                                 events::MessageSendEvent::HandleError { action: ErrorAction::IgnoreError, .. } => {
 556                                                         // Can be generated at any processing step to send back an error, disconnect
 557                                                         // peer or just ignore
 558                                                 },
 559                                                 _ => panic!("Unhandled message event"),
 560                                         }
 561                                 }
 562                         } }
 563                 }
 564
 565                 macro_rules! drain_msg_events_on_disconnect {
 566                         ($counterparty_id: expr) => { {
 567                                 if $counterparty_id == 0 {
 568                                         for event in nodes[0].get_and_clear_pending_msg_events() {
 569                                                 match event {
 570                                                         events::MessageSendEvent::UpdateHTLCs { .. } => {},
 571                                                         events::MessageSendEvent::SendRevokeAndACK { .. } => {},
 572                                                         events::MessageSendEvent::SendChannelReestablish { .. } => {},
 573                                                         events::MessageSendEvent::SendFundingLocked { .. } => {},
 574                                                         events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
 575                                                         events::MessageSendEvent::HandleError { action: ErrorAction::IgnoreError, .. } => {},
 576                                                         _ => panic!("Unhandled message event"),
 577                                                 }
 578                                         }
 579                                         ba_events.clear();
 580                                 } else {
 581                                         for event in nodes[2].get_and_clear_pending_msg_events() {
 582                                                 match event {
 583                                                         events::MessageSendEvent::UpdateHTLCs { .. } => {},
 584                                                         events::MessageSendEvent::SendRevokeAndACK { .. } => {},
 585                                                         events::MessageSendEvent::SendChannelReestablish { .. } => {},
 586                                                         events::MessageSendEvent::SendFundingLocked { .. } => {},
 587                                                         events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
 588                                                         events::MessageSendEvent::HandleError { action: ErrorAction::IgnoreError, .. } => {},
 589                                                         _ => panic!("Unhandled message event"),
 590                                                 }
 591                                         }
 592                                         bc_events.clear();
 593                                 }
 594                                 let mut events = nodes[1].get_and_clear_pending_msg_events();
 595                                 let drop_node_id = if $counterparty_id == 0 { nodes[0].get_our_node_id() } else { nodes[2].get_our_node_id() };
 596                                 let msg_sink = if $counterparty_id == 0 { &mut bc_events } else { &mut ba_events };
 597                                 for event in events.drain(..) {
 598                                         let push = match event {
 599                                                 events::MessageSendEvent::UpdateHTLCs { ref node_id, .. } => {
 600                                                         if *node_id != drop_node_id { true } else { false }
 601                                                 },
 602                                                 events::MessageSendEvent::SendRevokeAndACK { ref node_id, .. } => {
 603                                                         if *node_id != drop_node_id { true } else { false }
 604                                                 },
 605                                                 events::MessageSendEvent::SendChannelReestablish { ref node_id, .. } => {
 606                                                         if *node_id != drop_node_id { true } else { false }
 607                                                 },
 608                                                 events::MessageSendEvent::SendFundingLocked { .. } => false,
 609                                                 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => false,
 610                                                 events::MessageSendEvent::HandleError { action: ErrorAction::IgnoreError, .. } => false,
 611                                                 _ => panic!("Unhandled message event"),
 612                                         };
 613                                         if push { msg_sink.push(event); }
 614                                 }
 615                         } }
 616                 }
 617
 618                 macro_rules! process_events {
 619                         ($node: expr, $fail: expr) => { {
 620                                 // In case we get 256 payments we may have a hash collision, resulting in the
 621                                 // second claim/fail call not finding the duplicate-hash HTLC, so we have to
 622                                 // deduplicate the calls here.
 623                                 let mut claim_set = HashSet::new();
 624                                 let mut events = nodes[$node].get_and_clear_pending_events();
 625                                 // Sort events so that PendingHTLCsForwardable get processed last. This avoids a
 626                                 // case where we first process a PendingHTLCsForwardable, then claim/fail on a
 627                                 // PaymentReceived, claiming/failing two HTLCs, but leaving a just-generated
 628                                 // PaymentReceived event for the second HTLC in our pending_events (and breaking
 629                                 // our claim_set deduplication).
 630                                 events.sort_by(|a, b| {
 631                                         if let events::Event::PaymentReceived { .. } = a {
 632                                                 if let events::Event::PendingHTLCsForwardable { .. } = b {
 633                                                         Ordering::Less
 634                                                 } else { Ordering::Equal }
 635                                         } else if let events::Event::PendingHTLCsForwardable { .. } = a {
 636                                                 if let events::Event::PaymentReceived { .. } = b {
 637                                                         Ordering::Greater
 638                                                 } else { Ordering::Equal }
 639                                         } else { Ordering::Equal }
 640                                 });
 641                                 for event in events.drain(..) {
 642                                         match event {
 643                                                 events::Event::PaymentReceived { payment_hash, payment_secret, amt } => {
 644                                                         if claim_set.insert(payment_hash.0) {
 645                                                                 if $fail {
 646                                                                         assert!(nodes[$node].fail_htlc_backwards(&payment_hash, &payment_secret));
 647                                                                 } else {
 648                                                                         assert!(nodes[$node].claim_funds(PaymentPreimage(payment_hash.0), &payment_secret, amt));
 649                                                                 }
 650                                                         }
 651                                                 },
 652                                                 events::Event::PaymentSent { .. } => {},
 653                                                 events::Event::PaymentFailed { .. } => {},
 654                                                 events::Event::PendingHTLCsForwardable { .. } => {
 655                                                         nodes[$node].process_pending_htlc_forwards();
 656                                                 },
 657                                                 _ => panic!("Unhandled event"),
 658                                         }
 659                                 }
 660                         } }
 661                 }
 662
 663                 match get_slice!(1)[0] {
 664                         0x00 => *monitor_a.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
 665                         0x01 => *monitor_b.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
 666                         0x02 => *monitor_c.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
 667                         0x03 => *monitor_a.update_ret.lock().unwrap() = Ok(()),
 668                         0x04 => *monitor_b.update_ret.lock().unwrap() = Ok(()),
 669                         0x05 => *monitor_c.update_ret.lock().unwrap() = Ok(()),
 670                         0x06 => {
 671                                 if let Some((id, _)) = monitor_a.latest_monitors.lock().unwrap().get(&chan_1_funding) {
 672                                         nodes[0].channel_monitor_updated(&chan_1_funding, *id);
 673                                 }
 674                         },
 675                         0x07 => {
 676                                 if let Some((id, _)) = monitor_b.latest_monitors.lock().unwrap().get(&chan_1_funding) {
 677                                         nodes[1].channel_monitor_updated(&chan_1_funding, *id);
 678                                 }
 679                         },
 680                         0x24 => {
 681                                 if let Some((id, _)) = monitor_b.latest_monitors.lock().unwrap().get(&chan_2_funding) {
 682                                         nodes[1].channel_monitor_updated(&chan_2_funding, *id);
 683                                 }
 684                         },
 685                         0x08 => {
 686                                 if let Some((id, _)) = monitor_c.latest_monitors.lock().unwrap().get(&chan_2_funding) {
 687                                         nodes[2].channel_monitor_updated(&chan_2_funding, *id);
 688                                 }
 689                         },
 690                         0x09 => send_payment!(nodes[0], (&nodes[1], chan_a), 5_000_000),
 691                         0x0a => send_payment!(nodes[1], (&nodes[0], chan_a), 5_000_000),
 692                         0x0b => send_payment!(nodes[1], (&nodes[2], chan_b), 5_000_000),
 693                         0x0c => send_payment!(nodes[2], (&nodes[1], chan_b), 5_000_000),
 694                         0x0d => send_payment!(nodes[0], (&nodes[1], chan_a), (&nodes[2], chan_b), 5_000_000),
 695                         0x0e => send_payment!(nodes[2], (&nodes[1], chan_b), (&nodes[0], chan_a), 5_000_000),
 696                         0x0f => {
 697                                 if !chan_a_disconnected {
 698                                         nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
 699                                         nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
 700                                         chan_a_disconnected = true;
 701                                         drain_msg_events_on_disconnect!(0);
 702                                 }
 703                         },
 704                         0x10 => {
 705                                 if !chan_b_disconnected {
 706                                         nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
 707                                         nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
 708                                         chan_b_disconnected = true;
 709                                         drain_msg_events_on_disconnect!(2);
 710                                 }
 711                         },
 712                         0x11 => {
 713                                 if chan_a_disconnected {
 714                                         nodes[0].peer_connected(&nodes[1].get_our_node_id(), &Init { features: InitFeatures::empty() });
 715                                         nodes[1].peer_connected(&nodes[0].get_our_node_id(), &Init { features: InitFeatures::empty() });
 716                                         chan_a_disconnected = false;
 717                                 }
 718                         },
 719                         0x12 => {
 720                                 if chan_b_disconnected {
 721                                         nodes[1].peer_connected(&nodes[2].get_our_node_id(), &Init { features: InitFeatures::empty() });
 722                                         nodes[2].peer_connected(&nodes[1].get_our_node_id(), &Init { features: InitFeatures::empty() });
 723                                         chan_b_disconnected = false;
 724                                 }
 725                         },
 726                         0x13 => process_msg_events!(0, true),
 727                         0x14 => process_msg_events!(0, false),
 728                         0x15 => process_events!(0, true),
 729                         0x16 => process_events!(0, false),
 730                         0x17 => process_msg_events!(1, true),
 731                         0x18 => process_msg_events!(1, false),
 732                         0x19 => process_events!(1, true),
 733                         0x1a => process_events!(1, false),
 734                         0x1b => process_msg_events!(2, true),
 735                         0x1c => process_msg_events!(2, false),
 736                         0x1d => process_events!(2, true),
 737                         0x1e => process_events!(2, false),
 738                         0x1f => {
 739                                 if !chan_a_disconnected {
 740                                         nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
 741                                         chan_a_disconnected = true;
 742                                         drain_msg_events_on_disconnect!(0);
 743                                 }
 744                                 let (new_node_a, new_monitor_a) = reload_node!(node_a_ser, 0, monitor_a);
 745                                 node_a = Arc::new(new_node_a);
 746                                 nodes[0] = node_a.clone();
 747                                 monitor_a = new_monitor_a;
 748                         },
 749                         0x20 => {
 750                                 if !chan_a_disconnected {
 751                                         nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
 752                                         chan_a_disconnected = true;
 753                                         nodes[0].get_and_clear_pending_msg_events();
 754                                         ba_events.clear();
 755                                 }
 756                                 if !chan_b_disconnected {
 757                                         nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
 758                                         chan_b_disconnected = true;
 759                                         nodes[2].get_and_clear_pending_msg_events();
 760                                         bc_events.clear();
 761                                 }
 762                                 let (new_node_b, new_monitor_b) = reload_node!(node_b_ser, 1, monitor_b);
 763                                 node_b = Arc::new(new_node_b);
 764                                 nodes[1] = node_b.clone();
 765                                 monitor_b = new_monitor_b;
 766                         },
 767                         0x21 => {
 768                                 if !chan_b_disconnected {
 769                                         nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
 770                                         chan_b_disconnected = true;
 771                                         drain_msg_events_on_disconnect!(2);
 772                                 }
 773                                 let (new_node_c, new_monitor_c) = reload_node!(node_c_ser, 2, monitor_c);
 774                                 node_c = Arc::new(new_node_c);
 775                                 nodes[2] = node_c.clone();
 776                                 monitor_c = new_monitor_c;
 777                         },
 778                         0x22 => send_payment_with_secret!(nodes[0], (&nodes[1], chan_a), (&nodes[2], chan_b)),
 779                         0x23 => send_payment_with_secret!(nodes[2], (&nodes[1], chan_b), (&nodes[0], chan_a)),
 780                         0x25 => send_payment!(nodes[0], (&nodes[1], chan_a), 10),
 781                         0x26 => send_payment!(nodes[1], (&nodes[0], chan_a), 10),
 782                         0x27 => send_payment!(nodes[1], (&nodes[2], chan_b), 10),
 783                         0x28 => send_payment!(nodes[2], (&nodes[1], chan_b), 10),
 784                         0x29 => send_payment!(nodes[0], (&nodes[1], chan_a), (&nodes[2], chan_b), 10),
 785                         0x2a => send_payment!(nodes[2], (&nodes[1], chan_b), (&nodes[0], chan_a), 10),
 786                         0x2b => send_payment!(nodes[0], (&nodes[1], chan_a), 1_000),
 787                         0x2c => send_payment!(nodes[1], (&nodes[0], chan_a), 1_000),
 788                         0x2d => send_payment!(nodes[1], (&nodes[2], chan_b), 1_000),
 789                         0x2e => send_payment!(nodes[2], (&nodes[1], chan_b), 1_000),
 790                         0x2f => send_payment!(nodes[0], (&nodes[1], chan_a), (&nodes[2], chan_b), 1_000),
 791                         0x30 => send_payment!(nodes[2], (&nodes[1], chan_b), (&nodes[0], chan_a), 1_000),
 792                         0x31 => send_payment!(nodes[0], (&nodes[1], chan_a), 100_000),
 793                         0x32 => send_payment!(nodes[1], (&nodes[0], chan_a), 100_000),
 794                         0x33 => send_payment!(nodes[1], (&nodes[2], chan_b), 100_000),
 795                         0x34 => send_payment!(nodes[2], (&nodes[1], chan_b), 100_000),
 796                         0x35 => send_payment!(nodes[0], (&nodes[1], chan_a), (&nodes[2], chan_b), 100_000),
 797                         0x36 => send_payment!(nodes[2], (&nodes[1], chan_b), (&nodes[0], chan_a), 100_000),
 798                         // 0x24 defined above
 799                         _ => test_return!(),
 800                 }
 801
 802                 node_a_ser.0.clear();
 803                 nodes[0].write(&mut node_a_ser).unwrap();
 804                 monitor_a.should_update_manager.store(false, atomic::Ordering::Relaxed);
 805                 node_b_ser.0.clear();
 806                 nodes[1].write(&mut node_b_ser).unwrap();
 807                 monitor_b.should_update_manager.store(false, atomic::Ordering::Relaxed);
 808                 node_c_ser.0.clear();
 809                 nodes[2].write(&mut node_c_ser).unwrap();
 810                 monitor_c.should_update_manager.store(false, atomic::Ordering::Relaxed);
 811         }
 812 }
 813
 814 pub fn chanmon_consistency_test<Out: test_logger::Output>(data: &[u8], out: Out) {
 815         do_test(data, out);
 816 }
 817
 818 #[no_mangle]
 819 pub extern "C" fn chanmon_consistency_run(data: *const u8, datalen: usize) {
 820         do_test(unsafe { std::slice::from_raw_parts(data, datalen) }, test_logger::DevNull{});
 821 }