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

   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.
  11
  12 use bitcoin::BitcoinHash;
  13 use bitcoin::blockdata::block::BlockHeader;
  14 use bitcoin::blockdata::transaction::{Transaction, TxOut};
  15 use bitcoin::blockdata::script::{Builder, Script};
  16 use bitcoin::blockdata::opcodes;
  17 use bitcoin::network::constants::Network;
  18
  19 use bitcoin::hashes::Hash as TraitImport;
  20 use bitcoin::hashes::sha256::Hash as Sha256;
  21 use bitcoin::hash_types::{BlockHash, WPubkeyHash};
  22
  23 use lightning::chain::chaininterface;
  24 use lightning::chain::transaction::OutPoint;
  25 use lightning::chain::chaininterface::{BroadcasterInterface,ConfirmationTarget,ChainListener,FeeEstimator,ChainWatchInterfaceUtil,ChainWatchInterface};
  26 use lightning::chain::keysinterface::{KeysInterface, InMemoryChannelKeys};
  27 use lightning::ln::channelmonitor;
  28 use lightning::ln::channelmonitor::{ChannelMonitor, ChannelMonitorUpdateErr, HTLCUpdate};
  29 use lightning::ln::channelmanager::{ChannelManager, PaymentHash, PaymentPreimage, PaymentSecret, ChannelManagerReadArgs};
  30 use lightning::ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
  31 use lightning::ln::msgs::{CommitmentUpdate, ChannelMessageHandler, ErrorAction, UpdateAddHTLC, Init};
  32 use lightning::util::enforcing_trait_impls::EnforcingChannelKeys;
  33 use lightning::util::events;
  34 use lightning::util::logger::Logger;
  35 use lightning::util::config::UserConfig;
  36 use lightning::util::events::{EventsProvider, MessageSendEventsProvider};
  37 use lightning::util::ser::{Readable, ReadableArgs, Writeable, Writer};
  38 use lightning::routing::router::{Route, RouteHop};
  39
  40
  41 use utils::test_logger;
  42
  43 use bitcoin::secp256k1::key::{PublicKey,SecretKey};
  44 use bitcoin::secp256k1::Secp256k1;
  45
  46 use std::mem;
  47 use std::cmp::Ordering;
  48 use std::collections::{HashSet, hash_map, HashMap};
  49 use std::sync::{Arc,Mutex};
  50 use std::sync::atomic;
  51 use std::io::Cursor;
  52
  53 struct FuzzEstimator {}
  54 impl FeeEstimator for FuzzEstimator {
  55         fn get_est_sat_per_1000_weight(&self, _: ConfirmationTarget) -> u64 {
  56                 253
  57         }
  58 }
  59
  60 pub struct TestBroadcaster {}
  61 impl BroadcasterInterface for TestBroadcaster {
  62         fn broadcast_transaction(&self, _tx: &Transaction) { }
  63 }
  64
  65 pub struct VecWriter(pub Vec<u8>);
  66 impl Writer for VecWriter {
  67         fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
  68                 self.0.extend_from_slice(buf);
  69                 Ok(())
  70         }
  71         fn size_hint(&mut self, size: usize) {
  72                 self.0.reserve_exact(size);
  73         }
  74 }
  75
  76 struct TestChannelMonitor {
  77         pub logger: Arc<dyn Logger>,
  78         pub simple_monitor: Arc<channelmonitor::SimpleManyChannelMonitor<OutPoint, EnforcingChannelKeys, Arc<TestBroadcaster>, Arc<FuzzEstimator>, Arc<dyn Logger>, Arc<dyn ChainWatchInterface>>>,
  79         pub update_ret: Mutex<Result<(), channelmonitor::ChannelMonitorUpdateErr>>,
  80         // If we reload a node with an old copy of ChannelMonitors, the ChannelManager deserialization
  81         // logic will automatically force-close our channels for us (as we don't have an up-to-date
  82         // monitor implying we are not able to punish misbehaving counterparties). Because this test
  83         // "fails" if we ever force-close a channel, we avoid doing so, always saving the latest
  84         // fully-serialized monitor state here, as well as the corresponding update_id.
  85         pub latest_monitors: Mutex<HashMap<OutPoint, (u64, Vec<u8>)>>,
  86         pub should_update_manager: atomic::AtomicBool,
  87 }
  88 impl TestChannelMonitor {
  89         pub fn new(chain_monitor: Arc<dyn chaininterface::ChainWatchInterface>, broadcaster: Arc<TestBroadcaster>, logger: Arc<dyn Logger>, feeest: Arc<FuzzEstimator>) -> Self {
  90                 Self {
  91                         simple_monitor: Arc::new(channelmonitor::SimpleManyChannelMonitor::new(chain_monitor, broadcaster, logger.clone(), feeest)),
  92                         logger,
  93                         update_ret: Mutex::new(Ok(())),
  94                         latest_monitors: Mutex::new(HashMap::new()),
  95                         should_update_manager: atomic::AtomicBool::new(false),
  96                 }
  97         }
  98 }
  99 impl channelmonitor::ManyChannelMonitor for TestChannelMonitor {
 100         type Keys = EnforcingChannelKeys;
 101
 102         fn add_monitor(&self, funding_txo: OutPoint, monitor: channelmonitor::ChannelMonitor<EnforcingChannelKeys>) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
 103                 let mut ser = VecWriter(Vec::new());
 104                 monitor.write_for_disk(&mut ser).unwrap();
 105                 if let Some(_) = self.latest_monitors.lock().unwrap().insert(funding_txo, (monitor.get_latest_update_id(), ser.0)) {
 106                         panic!("Already had monitor pre-add_monitor");
 107                 }
 108                 self.should_update_manager.store(true, atomic::Ordering::Relaxed);
 109                 assert!(self.simple_monitor.add_monitor(funding_txo, monitor).is_ok());
 110                 self.update_ret.lock().unwrap().clone()
 111         }
 112
 113         fn update_monitor(&self, funding_txo: OutPoint, update: channelmonitor::ChannelMonitorUpdate) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
 114                 let mut map_lock = self.latest_monitors.lock().unwrap();
 115                 let mut map_entry = match map_lock.entry(funding_txo) {
 116                         hash_map::Entry::Occupied(entry) => entry,
 117                         hash_map::Entry::Vacant(_) => panic!("Didn't have monitor on update call"),
 118                 };
 119                 let mut deserialized_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingChannelKeys>)>::
 120                         read(&mut Cursor::new(&map_entry.get().1)).unwrap().1;
 121                 deserialized_monitor.update_monitor(update.clone(), &&TestBroadcaster {}, &self.logger).unwrap();
 122                 let mut ser = VecWriter(Vec::new());
 123                 deserialized_monitor.write_for_disk(&mut ser).unwrap();
 124                 map_entry.insert((update.update_id, ser.0));
 125                 self.should_update_manager.store(true, atomic::Ordering::Relaxed);
 126                 self.update_ret.lock().unwrap().clone()
 127         }
 128
 129         fn get_and_clear_pending_htlcs_updated(&self) -> Vec<HTLCUpdate> {
 130                 return self.simple_monitor.get_and_clear_pending_htlcs_updated();
 131         }
 132 }
 133
 134 struct KeyProvider {
 135         node_id: u8,
 136         session_id: atomic::AtomicU8,
 137         channel_id: atomic::AtomicU8,
 138 }
 139 impl KeysInterface for KeyProvider {
 140         type ChanKeySigner = EnforcingChannelKeys;
 141
 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()
 144         }
 145
 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 = WPubkeyHash::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()
 151         }
 152
 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())
 156         }
 157
 158         fn get_channel_keys(&self, _inbound: bool, channel_value_satoshis: u64) -> EnforcingChannelKeys {
 159                 let secp_ctx = Secp256k1::signing_only();
 160                 EnforcingChannelKeys::new(InMemoryChannelKeys::new(
 161                         &secp_ctx,
 162                         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(),
 163                         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(),
 164                         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(),
 165                         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(),
 166                         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(),
 167                         [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],
 168                         channel_value_satoshis,
 169                         (0, 0),
 170                 ))
 171         }
 172
 173         fn get_onion_rand(&self) -> (SecretKey, [u8; 32]) {
 174                 let id = self.session_id.fetch_add(1, atomic::Ordering::Relaxed);
 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, id, 10, self.node_id]).unwrap(),
 176                 [0; 32])
 177         }
 178
 179         fn get_channel_id(&self) -> [u8; 32] {
 180                 let id = self.channel_id.fetch_add(1, atomic::Ordering::Relaxed);
 181                 [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]
 182         }
 183 }
 184
 185 #[inline]
 186 pub fn do_test<Out: test_logger::Output>(data: &[u8], out: Out) {
 187         let fee_est = Arc::new(FuzzEstimator{});
 188         let broadcast = Arc::new(TestBroadcaster{});
 189
 190         macro_rules! make_node {
 191                 ($node_id: expr) => { {
 192                         let logger: Arc<dyn Logger> = Arc::new(test_logger::TestLogger::new($node_id.to_string(), out.clone()));
 193                         let watch = Arc::new(ChainWatchInterfaceUtil::new(Network::Bitcoin));
 194                         let monitor = Arc::new(TestChannelMonitor::new(watch.clone(), broadcast.clone(), logger.clone(), fee_est.clone()));
 195
 196                         let keys_manager = Arc::new(KeyProvider { node_id: $node_id, session_id: atomic::AtomicU8::new(0), channel_id: atomic::AtomicU8::new(0) });
 197                         let mut config = UserConfig::default();
 198                         config.channel_options.fee_proportional_millionths = 0;
 199                         config.channel_options.announced_channel = true;
 200                         config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
 201                         (Arc::new(ChannelManager::new(Network::Bitcoin, fee_est.clone(), monitor.clone(), broadcast.clone(), Arc::clone(&logger), keys_manager.clone(), config, 0)),
 202                         monitor)
 203                 } }
 204         }
 205
 206         macro_rules! reload_node {
 207                 ($ser: expr, $node_id: expr, $old_monitors: expr) => { {
 208                         let logger: Arc<dyn Logger> = Arc::new(test_logger::TestLogger::new($node_id.to_string(), out.clone()));
 209                         let watch = Arc::new(ChainWatchInterfaceUtil::new(Network::Bitcoin));
 210                         let monitor = Arc::new(TestChannelMonitor::new(watch.clone(), broadcast.clone(), logger.clone(), fee_est.clone()));
 211
 212                         let keys_manager = Arc::new(KeyProvider { node_id: $node_id, session_id: atomic::AtomicU8::new(0), channel_id: atomic::AtomicU8::new(0) });
 213                         let mut config = UserConfig::default();
 214                         config.channel_options.fee_proportional_millionths = 0;
 215                         config.channel_options.announced_channel = true;
 216                         config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
 217
 218                         let mut monitors = HashMap::new();
 219                         let mut old_monitors = $old_monitors.latest_monitors.lock().unwrap();
 220                         for (outpoint, (update_id, monitor_ser)) in old_monitors.drain() {
 221                                 monitors.insert(outpoint, <(BlockHash, ChannelMonitor<EnforcingChannelKeys>)>::read(&mut Cursor::new(&monitor_ser)).expect("Failed to read monitor").1);
 222                                 monitor.latest_monitors.lock().unwrap().insert(outpoint, (update_id, monitor_ser));
 223                         }
 224                         let mut monitor_refs = HashMap::new();
 225                         for (outpoint, monitor) in monitors.iter_mut() {
 226                                 monitor_refs.insert(*outpoint, monitor);
 227                         }
 228
 229                         let read_args = ChannelManagerReadArgs {
 230                                 keys_manager,
 231                                 fee_estimator: fee_est.clone(),
 232                                 monitor: monitor.clone(),
 233                                 tx_broadcaster: broadcast.clone(),
 234                                 logger,
 235                                 default_config: config,
 236                                 channel_monitors: &mut monitor_refs,
 237                         };
 238
 239                         (<(BlockHash, ChannelManager<EnforcingChannelKeys, Arc<TestChannelMonitor>, Arc<TestBroadcaster>, Arc<KeyProvider>, Arc<FuzzEstimator>, Arc<dyn Logger>>)>::read(&mut Cursor::new(&$ser.0), read_args).expect("Failed to read manager").1, monitor)
 240                 } }
 241         }
 242
 243         let mut channel_txn = Vec::new();
 244         macro_rules! make_channel {
 245                 ($source: expr, $dest: expr, $chan_id: expr) => { {
 246                         $source.create_channel($dest.get_our_node_id(), 10000000, 42, 0, None).unwrap();
 247                         let open_channel = {
 248                                 let events = $source.get_and_clear_pending_msg_events();
 249                                 assert_eq!(events.len(), 1);
 250                                 if let events::MessageSendEvent::SendOpenChannel { ref msg, .. } = events[0] {
 251                                         msg.clone()
 252                                 } else { panic!("Wrong event type"); }
 253                         };
 254
 255                         $dest.handle_open_channel(&$source.get_our_node_id(), InitFeatures::known(), &open_channel);
 256                         let accept_channel = {
 257                                 let events = $dest.get_and_clear_pending_msg_events();
 258                                 assert_eq!(events.len(), 1);
 259                                 if let events::MessageSendEvent::SendAcceptChannel { ref msg, .. } = events[0] {
 260                                         msg.clone()
 261                                 } else { panic!("Wrong event type"); }
 262                         };
 263
 264                         $source.handle_accept_channel(&$dest.get_our_node_id(), InitFeatures::known(), &accept_channel);
 265                         let funding_output;
 266                         {
 267                                 let events = $source.get_and_clear_pending_events();
 268                                 assert_eq!(events.len(), 1);
 269                                 if let events::Event::FundingGenerationReady { ref temporary_channel_id, ref channel_value_satoshis, ref output_script, .. } = events[0] {
 270                                         let tx = Transaction { version: $chan_id, lock_time: 0, input: Vec::new(), output: vec![TxOut {
 271                                                 value: *channel_value_satoshis, script_pubkey: output_script.clone(),
 272                                         }]};
 273                                         funding_output = OutPoint { txid: tx.txid(), index: 0 };
 274                                         $source.funding_transaction_generated(&temporary_channel_id, funding_output);
 275                                         channel_txn.push(tx);
 276                                 } else { panic!("Wrong event type"); }
 277                         }
 278
 279                         let funding_created = {
 280                                 let events = $source.get_and_clear_pending_msg_events();
 281                                 assert_eq!(events.len(), 1);
 282                                 if let events::MessageSendEvent::SendFundingCreated { ref msg, .. } = events[0] {
 283                                         msg.clone()
 284                                 } else { panic!("Wrong event type"); }
 285                         };
 286                         $dest.handle_funding_created(&$source.get_our_node_id(), &funding_created);
 287
 288                         let funding_signed = {
 289                                 let events = $dest.get_and_clear_pending_msg_events();
 290                                 assert_eq!(events.len(), 1);
 291                                 if let events::MessageSendEvent::SendFundingSigned { ref msg, .. } = events[0] {
 292                                         msg.clone()
 293                                 } else { panic!("Wrong event type"); }
 294                         };
 295                         $source.handle_funding_signed(&$dest.get_our_node_id(), &funding_signed);
 296
 297                         {
 298                                 let events = $source.get_and_clear_pending_events();
 299                                 assert_eq!(events.len(), 1);
 300                                 if let events::Event::FundingBroadcastSafe { .. } = events[0] {
 301                                 } else { panic!("Wrong event type"); }
 302                         }
 303                         funding_output
 304                 } }
 305         }
 306
 307         macro_rules! confirm_txn {
 308                 ($node: expr) => { {
 309                         let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 310                         let mut txn = Vec::with_capacity(channel_txn.len());
 311                         let mut posn = Vec::with_capacity(channel_txn.len());
 312                         for i in 0..channel_txn.len() {
 313                                 txn.push(&channel_txn[i]);
 314                                 posn.push(i as u32 + 1);
 315                         }
 316                         $node.block_connected(&header, 1, &txn, &posn);
 317                         for i in 2..100 {
 318                                 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 319                                 $node.block_connected(&header, i, &Vec::new(), &[0; 0]);
 320                         }
 321                 } }
 322         }
 323
 324         macro_rules! lock_fundings {
 325                 ($nodes: expr) => { {
 326                         let mut node_events = Vec::new();
 327                         for node in $nodes.iter() {
 328                                 node_events.push(node.get_and_clear_pending_msg_events());
 329                         }
 330                         for (idx, node_event) in node_events.iter().enumerate() {
 331                                 for event in node_event {
 332                                         if let events::MessageSendEvent::SendFundingLocked { ref node_id, ref msg } = event {
 333                                                 for node in $nodes.iter() {
 334                                                         if node.get_our_node_id() == *node_id {
 335                                                                 node.handle_funding_locked(&$nodes[idx].get_our_node_id(), msg);
 336                                                         }
 337                                                 }
 338                                         } else { panic!("Wrong event type"); }
 339                                 }
 340                         }
 341
 342                         for node in $nodes.iter() {
 343                                 let events = node.get_and_clear_pending_msg_events();
 344                                 for event in events {
 345                                         if let events::MessageSendEvent::SendAnnouncementSignatures { .. } = event {
 346                                         } else { panic!("Wrong event type"); }
 347                                 }
 348                         }
 349                 } }
 350         }
 351
 352         // 3 nodes is enough to hit all the possible cases, notably unknown-source-unknown-dest
 353         // forwarding.
 354         let (mut node_a, mut monitor_a) = make_node!(0);
 355         let (mut node_b, mut monitor_b) = make_node!(1);
 356         let (mut node_c, mut monitor_c) = make_node!(2);
 357
 358         let mut nodes = [node_a, node_b, node_c];
 359
 360         let chan_1_funding = make_channel!(nodes[0], nodes[1], 0);
 361         let chan_2_funding = make_channel!(nodes[1], nodes[2], 1);
 362
 363         for node in nodes.iter() {
 364                 confirm_txn!(node);
 365         }
 366
 367         lock_fundings!(nodes);
 368
 369         let chan_a = nodes[0].list_usable_channels()[0].short_channel_id.unwrap();
 370         let chan_b = nodes[2].list_usable_channels()[0].short_channel_id.unwrap();
 371
 372         let mut payment_id = 0;
 373
 374         let mut chan_a_disconnected = false;
 375         let mut chan_b_disconnected = false;
 376         let mut ba_events = Vec::new();
 377         let mut bc_events = Vec::new();
 378
 379         let mut node_a_ser = VecWriter(Vec::new());
 380         nodes[0].write(&mut node_a_ser).unwrap();
 381         let mut node_b_ser = VecWriter(Vec::new());
 382         nodes[1].write(&mut node_b_ser).unwrap();
 383         let mut node_c_ser = VecWriter(Vec::new());
 384         nodes[2].write(&mut node_c_ser).unwrap();
 385
 386         macro_rules! test_return {
 387                 () => { {
 388                         assert_eq!(nodes[0].list_channels().len(), 1);
 389                         assert_eq!(nodes[1].list_channels().len(), 2);
 390                         assert_eq!(nodes[2].list_channels().len(), 1);
 391                         return;
 392                 } }
 393         }
 394
 395         let mut read_pos = 0;
 396         macro_rules! get_slice {
 397                 ($len: expr) => {
 398                         {
 399                                 let slice_len = $len as usize;
 400                                 if data.len() < read_pos + slice_len {
 401                                         test_return!();
 402                                 }
 403                                 read_pos += slice_len;
 404                                 &data[read_pos - slice_len..read_pos]
 405                         }
 406                 }
 407         }
 408
 409         loop {
 410                 macro_rules! send_payment {
 411                         ($source: expr, $dest: expr) => { {
 412                                 let payment_hash = Sha256::hash(&[payment_id; 1]);
 413                                 payment_id = payment_id.wrapping_add(1);
 414                                 if let Err(_) = $source.send_payment(&Route {
 415                                         paths: vec![vec![RouteHop {
 416                                                 pubkey: $dest.0.get_our_node_id(),
 417                                                 node_features: NodeFeatures::empty(),
 418                                                 short_channel_id: $dest.1,
 419                                                 channel_features: ChannelFeatures::empty(),
 420                                                 fee_msat: 5000000,
 421                                                 cltv_expiry_delta: 200,
 422                                         }]],
 423                                 }, PaymentHash(payment_hash.into_inner()), &None) {
 424                                         // Probably ran out of funds
 425                                         test_return!();
 426                                 }
 427                         } };
 428                         ($source: expr, $middle: expr, $dest: expr) => { {
 429                                 let payment_hash = Sha256::hash(&[payment_id; 1]);
 430                                 payment_id = payment_id.wrapping_add(1);
 431                                 if let Err(_) = $source.send_payment(&Route {
 432                                         paths: vec![vec![RouteHop {
 433                                                 pubkey: $middle.0.get_our_node_id(),
 434                                                 node_features: NodeFeatures::empty(),
 435                                                 short_channel_id: $middle.1,
 436                                                 channel_features: ChannelFeatures::empty(),
 437                                                 fee_msat: 50000,
 438                                                 cltv_expiry_delta: 100,
 439                                         },RouteHop {
 440                                                 pubkey: $dest.0.get_our_node_id(),
 441                                                 node_features: NodeFeatures::empty(),
 442                                                 short_channel_id: $dest.1,
 443                                                 channel_features: ChannelFeatures::empty(),
 444                                                 fee_msat: 5000000,
 445                                                 cltv_expiry_delta: 200,
 446                                         }]],
 447                                 }, PaymentHash(payment_hash.into_inner()), &None) {
 448                                         // Probably ran out of funds
 449                                         test_return!();
 450                                 }
 451                         } }
 452                 }
 453                 macro_rules! send_payment_with_secret {
 454                         ($source: expr, $middle: expr, $dest: expr) => { {
 455                                 let payment_hash = Sha256::hash(&[payment_id; 1]);
 456                                 payment_id = payment_id.wrapping_add(1);
 457                                 let payment_secret = Sha256::hash(&[payment_id; 1]);
 458                                 payment_id = payment_id.wrapping_add(1);
 459                                 if let Err(_) = $source.send_payment(&Route {
 460                                         paths: vec![vec![RouteHop {
 461                                                 pubkey: $middle.0.get_our_node_id(),
 462                                                 node_features: NodeFeatures::empty(),
 463                                                 short_channel_id: $middle.1,
 464                                                 channel_features: ChannelFeatures::empty(),
 465                                                 fee_msat: 50000,
 466                                                 cltv_expiry_delta: 100,
 467                                         },RouteHop {
 468                                                 pubkey: $dest.0.get_our_node_id(),
 469                                                 node_features: NodeFeatures::empty(),
 470                                                 short_channel_id: $dest.1,
 471                                                 channel_features: ChannelFeatures::empty(),
 472                                                 fee_msat: 5000000,
 473                                                 cltv_expiry_delta: 200,
 474                                         }],vec![RouteHop {
 475                                                 pubkey: $middle.0.get_our_node_id(),
 476                                                 node_features: NodeFeatures::empty(),
 477                                                 short_channel_id: $middle.1,
 478                                                 channel_features: ChannelFeatures::empty(),
 479                                                 fee_msat: 50000,
 480                                                 cltv_expiry_delta: 100,
 481                                         },RouteHop {
 482                                                 pubkey: $dest.0.get_our_node_id(),
 483                                                 node_features: NodeFeatures::empty(),
 484                                                 short_channel_id: $dest.1,
 485                                                 channel_features: ChannelFeatures::empty(),
 486                                                 fee_msat: 5000000,
 487                                                 cltv_expiry_delta: 200,
 488                                         }]],
 489                                 }, PaymentHash(payment_hash.into_inner()), &Some(PaymentSecret(payment_secret.into_inner()))) {
 490                                         // Probably ran out of funds
 491                                         test_return!();
 492                                 }
 493                         } }
 494                 }
 495
 496                 macro_rules! process_msg_events {
 497                         ($node: expr, $corrupt_forward: expr) => { {
 498                                 let events = if $node == 1 {
 499                                         let mut new_events = Vec::new();
 500                                         mem::swap(&mut new_events, &mut ba_events);
 501                                         new_events.extend_from_slice(&bc_events[..]);
 502                                         bc_events.clear();
 503                                         new_events
 504                                 } else { Vec::new() };
 505                                 for event in events.iter().chain(nodes[$node].get_and_clear_pending_msg_events().iter()) {
 506                                         match event {
 507                                                 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 } } => {
 508                                                         for dest in nodes.iter() {
 509                                                                 if dest.get_our_node_id() == *node_id {
 510                                                                         assert!(update_fee.is_none());
 511                                                                         for update_add in update_add_htlcs {
 512                                                                                 if !$corrupt_forward {
 513                                                                                         dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &update_add);
 514                                                                                 } else {
 515                                                                                         // Corrupt the update_add_htlc message so that its HMAC
 516                                                                                         // check will fail and we generate a
 517                                                                                         // update_fail_malformed_htlc instead of an
 518                                                                                         // update_fail_htlc as we do when we reject a payment.
 519                                                                                         let mut msg_ser = update_add.encode();
 520                                                                                         msg_ser[1000] ^= 0xff;
 521                                                                                         let new_msg = UpdateAddHTLC::read(&mut Cursor::new(&msg_ser)).unwrap();
 522                                                                                         dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &new_msg);
 523                                                                                 }
 524                                                                         }
 525                                                                         for update_fulfill in update_fulfill_htlcs {
 526                                                                                 dest.handle_update_fulfill_htlc(&nodes[$node].get_our_node_id(), &update_fulfill);
 527                                                                         }
 528                                                                         for update_fail in update_fail_htlcs {
 529                                                                                 dest.handle_update_fail_htlc(&nodes[$node].get_our_node_id(), &update_fail);
 530                                                                         }
 531                                                                         for update_fail_malformed in update_fail_malformed_htlcs {
 532                                                                                 dest.handle_update_fail_malformed_htlc(&nodes[$node].get_our_node_id(), &update_fail_malformed);
 533                                                                         }
 534                                                                         dest.handle_commitment_signed(&nodes[$node].get_our_node_id(), &commitment_signed);
 535                                                                 }
 536                                                         }
 537                                                 },
 538                                                 events::MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
 539                                                         for dest in nodes.iter() {
 540                                                                 if dest.get_our_node_id() == *node_id {
 541                                                                         dest.handle_revoke_and_ack(&nodes[$node].get_our_node_id(), msg);
 542                                                                 }
 543                                                         }
 544                                                 },
 545                                                 events::MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } => {
 546                                                         for dest in nodes.iter() {
 547                                                                 if dest.get_our_node_id() == *node_id {
 548                                                                         dest.handle_channel_reestablish(&nodes[$node].get_our_node_id(), msg);
 549                                                                 }
 550                                                         }
 551                                                 },
 552                                                 events::MessageSendEvent::SendFundingLocked { .. } => {
 553                                                         // Can be generated as a reestablish response
 554                                                 },
 555                                                 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {
 556                                                         // Can be generated due to a payment forward being rejected due to a
 557                                                         // channel having previously failed a monitor update
 558                                                 },
 559                                                 events::MessageSendEvent::HandleError { action: ErrorAction::IgnoreError, .. } => {
 560                                                         // Can be generated at any processing step to send back an error, disconnect
 561                                                         // peer or just ignore
 562                                                 },
 563                                                 _ => panic!("Unhandled message event"),
 564                                         }
 565                                 }
 566                         } }
 567                 }
 568
 569                 macro_rules! drain_msg_events_on_disconnect {
 570                         ($counterparty_id: expr) => { {
 571                                 if $counterparty_id == 0 {
 572                                         for event in nodes[0].get_and_clear_pending_msg_events() {
 573                                                 match event {
 574                                                         events::MessageSendEvent::UpdateHTLCs { .. } => {},
 575                                                         events::MessageSendEvent::SendRevokeAndACK { .. } => {},
 576                                                         events::MessageSendEvent::SendChannelReestablish { .. } => {},
 577                                                         events::MessageSendEvent::SendFundingLocked { .. } => {},
 578                                                         events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
 579                                                         events::MessageSendEvent::HandleError { action: ErrorAction::IgnoreError, .. } => {},
 580                                                         _ => panic!("Unhandled message event"),
 581                                                 }
 582                                         }
 583                                         ba_events.clear();
 584                                 } else {
 585                                         for event in nodes[2].get_and_clear_pending_msg_events() {
 586                                                 match event {
 587                                                         events::MessageSendEvent::UpdateHTLCs { .. } => {},
 588                                                         events::MessageSendEvent::SendRevokeAndACK { .. } => {},
 589                                                         events::MessageSendEvent::SendChannelReestablish { .. } => {},
 590                                                         events::MessageSendEvent::SendFundingLocked { .. } => {},
 591                                                         events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
 592                                                         events::MessageSendEvent::HandleError { action: ErrorAction::IgnoreError, .. } => {},
 593                                                         _ => panic!("Unhandled message event"),
 594                                                 }
 595                                         }
 596                                         bc_events.clear();
 597                                 }
 598                                 let mut events = nodes[1].get_and_clear_pending_msg_events();
 599                                 let drop_node_id = if $counterparty_id == 0 { nodes[0].get_our_node_id() } else { nodes[2].get_our_node_id() };
 600                                 let msg_sink = if $counterparty_id == 0 { &mut bc_events } else { &mut ba_events };
 601                                 for event in events.drain(..) {
 602                                         let push = match event {
 603                                                 events::MessageSendEvent::UpdateHTLCs { ref node_id, .. } => {
 604                                                         if *node_id != drop_node_id { true } else { false }
 605                                                 },
 606                                                 events::MessageSendEvent::SendRevokeAndACK { ref node_id, .. } => {
 607                                                         if *node_id != drop_node_id { true } else { false }
 608                                                 },
 609                                                 events::MessageSendEvent::SendChannelReestablish { ref node_id, .. } => {
 610                                                         if *node_id != drop_node_id { true } else { false }
 611                                                 },
 612                                                 events::MessageSendEvent::SendFundingLocked { .. } => false,
 613                                                 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => false,
 614                                                 events::MessageSendEvent::HandleError { action: ErrorAction::IgnoreError, .. } => false,
 615                                                 _ => panic!("Unhandled message event"),
 616                                         };
 617                                         if push { msg_sink.push(event); }
 618                                 }
 619                         } }
 620                 }
 621
 622                 macro_rules! process_events {
 623                         ($node: expr, $fail: expr) => { {
 624                                 // In case we get 256 payments we may have a hash collision, resulting in the
 625                                 // second claim/fail call not finding the duplicate-hash HTLC, so we have to
 626                                 // deduplicate the calls here.
 627                                 let mut claim_set = HashSet::new();
 628                                 let mut events = nodes[$node].get_and_clear_pending_events();
 629                                 // Sort events so that PendingHTLCsForwardable get processed last. This avoids a
 630                                 // case where we first process a PendingHTLCsForwardable, then claim/fail on a
 631                                 // PaymentReceived, claiming/failing two HTLCs, but leaving a just-generated
 632                                 // PaymentReceived event for the second HTLC in our pending_events (and breaking
 633                                 // our claim_set deduplication).
 634                                 events.sort_by(|a, b| {
 635                                         if let events::Event::PaymentReceived { .. } = a {
 636                                                 if let events::Event::PendingHTLCsForwardable { .. } = b {
 637                                                         Ordering::Less
 638                                                 } else { Ordering::Equal }
 639                                         } else if let events::Event::PendingHTLCsForwardable { .. } = a {
 640                                                 if let events::Event::PaymentReceived { .. } = b {
 641                                                         Ordering::Greater
 642                                                 } else { Ordering::Equal }
 643                                         } else { Ordering::Equal }
 644                                 });
 645                                 for event in events.drain(..) {
 646                                         match event {
 647                                                 events::Event::PaymentReceived { payment_hash, payment_secret, .. } => {
 648                                                         if claim_set.insert(payment_hash.0) {
 649                                                                 if $fail {
 650                                                                         assert!(nodes[$node].fail_htlc_backwards(&payment_hash, &payment_secret));
 651                                                                 } else {
 652                                                                         assert!(nodes[$node].claim_funds(PaymentPreimage(payment_hash.0), &payment_secret, 5_000_000));
 653                                                                 }
 654                                                         }
 655                                                 },
 656                                                 events::Event::PaymentSent { .. } => {},
 657                                                 events::Event::PaymentFailed { .. } => {},
 658                                                 events::Event::PendingHTLCsForwardable { .. } => {
 659                                                         nodes[$node].process_pending_htlc_forwards();
 660                                                 },
 661                                                 _ => panic!("Unhandled event"),
 662                                         }
 663                                 }
 664                         } }
 665                 }
 666
 667                 match get_slice!(1)[0] {
 668                         0x00 => *monitor_a.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
 669                         0x01 => *monitor_b.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
 670                         0x02 => *monitor_c.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
 671                         0x03 => *monitor_a.update_ret.lock().unwrap() = Ok(()),
 672                         0x04 => *monitor_b.update_ret.lock().unwrap() = Ok(()),
 673                         0x05 => *monitor_c.update_ret.lock().unwrap() = Ok(()),
 674                         0x06 => {
 675                                 if let Some((id, _)) = monitor_a.latest_monitors.lock().unwrap().get(&chan_1_funding) {
 676                                         nodes[0].channel_monitor_updated(&chan_1_funding, *id);
 677                                 }
 678                         },
 679                         0x07 => {
 680                                 if let Some((id, _)) = monitor_b.latest_monitors.lock().unwrap().get(&chan_1_funding) {
 681                                         nodes[1].channel_monitor_updated(&chan_1_funding, *id);
 682                                 }
 683                         },
 684                         0x24 => {
 685                                 if let Some((id, _)) = monitor_b.latest_monitors.lock().unwrap().get(&chan_2_funding) {
 686                                         nodes[1].channel_monitor_updated(&chan_2_funding, *id);
 687                                 }
 688                         },
 689                         0x08 => {
 690                                 if let Some((id, _)) = monitor_c.latest_monitors.lock().unwrap().get(&chan_2_funding) {
 691                                         nodes[2].channel_monitor_updated(&chan_2_funding, *id);
 692                                 }
 693                         },
 694                         0x09 => send_payment!(nodes[0], (&nodes[1], chan_a)),
 695                         0x0a => send_payment!(nodes[1], (&nodes[0], chan_a)),
 696                         0x0b => send_payment!(nodes[1], (&nodes[2], chan_b)),
 697                         0x0c => send_payment!(nodes[2], (&nodes[1], chan_b)),
 698                         0x0d => send_payment!(nodes[0], (&nodes[1], chan_a), (&nodes[2], chan_b)),
 699                         0x0e => send_payment!(nodes[2], (&nodes[1], chan_b), (&nodes[0], chan_a)),
 700                         0x0f => {
 701                                 if !chan_a_disconnected {
 702                                         nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
 703                                         nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
 704                                         chan_a_disconnected = true;
 705                                         drain_msg_events_on_disconnect!(0);
 706                                 }
 707                         },
 708                         0x10 => {
 709                                 if !chan_b_disconnected {
 710                                         nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
 711                                         nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
 712                                         chan_b_disconnected = true;
 713                                         drain_msg_events_on_disconnect!(2);
 714                                 }
 715                         },
 716                         0x11 => {
 717                                 if chan_a_disconnected {
 718                                         nodes[0].peer_connected(&nodes[1].get_our_node_id(), &Init { features: InitFeatures::empty() });
 719                                         nodes[1].peer_connected(&nodes[0].get_our_node_id(), &Init { features: InitFeatures::empty() });
 720                                         chan_a_disconnected = false;
 721                                 }
 722                         },
 723                         0x12 => {
 724                                 if chan_b_disconnected {
 725                                         nodes[1].peer_connected(&nodes[2].get_our_node_id(), &Init { features: InitFeatures::empty() });
 726                                         nodes[2].peer_connected(&nodes[1].get_our_node_id(), &Init { features: InitFeatures::empty() });
 727                                         chan_b_disconnected = false;
 728                                 }
 729                         },
 730                         0x13 => process_msg_events!(0, true),
 731                         0x14 => process_msg_events!(0, false),
 732                         0x15 => process_events!(0, true),
 733                         0x16 => process_events!(0, false),
 734                         0x17 => process_msg_events!(1, true),
 735                         0x18 => process_msg_events!(1, false),
 736                         0x19 => process_events!(1, true),
 737                         0x1a => process_events!(1, false),
 738                         0x1b => process_msg_events!(2, true),
 739                         0x1c => process_msg_events!(2, false),
 740                         0x1d => process_events!(2, true),
 741                         0x1e => process_events!(2, false),
 742                         0x1f => {
 743                                 if !chan_a_disconnected {
 744                                         nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
 745                                         chan_a_disconnected = true;
 746                                         drain_msg_events_on_disconnect!(0);
 747                                 }
 748                                 let (new_node_a, new_monitor_a) = reload_node!(node_a_ser, 0, monitor_a);
 749                                 node_a = Arc::new(new_node_a);
 750                                 nodes[0] = node_a.clone();
 751                                 monitor_a = new_monitor_a;
 752                         },
 753                         0x20 => {
 754                                 if !chan_a_disconnected {
 755                                         nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
 756                                         chan_a_disconnected = true;
 757                                         nodes[0].get_and_clear_pending_msg_events();
 758                                         ba_events.clear();
 759                                 }
 760                                 if !chan_b_disconnected {
 761                                         nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
 762                                         chan_b_disconnected = true;
 763                                         nodes[2].get_and_clear_pending_msg_events();
 764                                         bc_events.clear();
 765                                 }
 766                                 let (new_node_b, new_monitor_b) = reload_node!(node_b_ser, 1, monitor_b);
 767                                 node_b = Arc::new(new_node_b);
 768                                 nodes[1] = node_b.clone();
 769                                 monitor_b = new_monitor_b;
 770                         },
 771                         0x21 => {
 772                                 if !chan_b_disconnected {
 773                                         nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
 774                                         chan_b_disconnected = true;
 775                                         drain_msg_events_on_disconnect!(2);
 776                                 }
 777                                 let (new_node_c, new_monitor_c) = reload_node!(node_c_ser, 2, monitor_c);
 778                                 node_c = Arc::new(new_node_c);
 779                                 nodes[2] = node_c.clone();
 780                                 monitor_c = new_monitor_c;
 781                         },
 782                         0x22 => send_payment_with_secret!(nodes[0], (&nodes[1], chan_a), (&nodes[2], chan_b)),
 783                         0x23 => send_payment_with_secret!(nodes[2], (&nodes[1], chan_b), (&nodes[0], chan_a)),
 784                         // 0x24 defined above
 785                         _ => test_return!(),
 786                 }
 787
 788                 node_a_ser.0.clear();
 789                 nodes[0].write(&mut node_a_ser).unwrap();
 790                 monitor_a.should_update_manager.store(false, atomic::Ordering::Relaxed);
 791                 node_b_ser.0.clear();
 792                 nodes[1].write(&mut node_b_ser).unwrap();
 793                 monitor_b.should_update_manager.store(false, atomic::Ordering::Relaxed);
 794                 node_c_ser.0.clear();
 795                 nodes[2].write(&mut node_c_ser).unwrap();
 796                 monitor_c.should_update_manager.store(false, atomic::Ordering::Relaxed);
 797         }
 798 }
 799
 800 pub fn chanmon_consistency_test<Out: test_logger::Output>(data: &[u8], out: Out) {
 801         do_test(data, out);
 802 }
 803
 804 #[no_mangle]
 805 pub extern "C" fn chanmon_consistency_run(data: *const u8, datalen: usize) {
 806         do_test(unsafe { std::slice::from_raw_parts(data, datalen) }, test_logger::DevNull{});
 807 }