_ Git - rust-lightning/blob - fuzz/fuzz_targets/chanmon_fail_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 //Uncomment this for libfuzzer builds:
  13 //#![no_main]
  14
  15 extern crate bitcoin;
  16 extern crate bitcoin_hashes;
  17 extern crate lightning;
  18 extern crate secp256k1;
  19
  20 use bitcoin::BitcoinHash;
  21 use bitcoin::blockdata::block::BlockHeader;
  22 use bitcoin::blockdata::transaction::{Transaction, TxOut};
  23 use bitcoin::blockdata::script::{Builder, Script};
  24 use bitcoin::blockdata::opcodes;
  25 use bitcoin::network::constants::Network;
  26
  27 use bitcoin_hashes::Hash as TraitImport;
  28 use bitcoin_hashes::hash160::Hash as Hash160;
  29 use bitcoin_hashes::sha256::Hash as Sha256;
  30
  31 use lightning::chain::chaininterface;
  32 use lightning::chain::transaction::OutPoint;
  33 use lightning::chain::chaininterface::{BroadcasterInterface,ConfirmationTarget,ChainListener,FeeEstimator,ChainWatchInterfaceUtil};
  34 use lightning::chain::keysinterface::{ChannelKeys, KeysInterface};
  35 use lightning::ln::channelmonitor;
  36 use lightning::ln::channelmonitor::{ChannelMonitorUpdateErr, HTLCUpdate};
  37 use lightning::ln::channelmanager::{ChannelManager, PaymentHash, PaymentPreimage};
  38 use lightning::ln::router::{Route, RouteHop};
  39 use lightning::ln::msgs::{CommitmentUpdate, ChannelMessageHandler, ErrorAction, HandleError, UpdateAddHTLC};
  40 use lightning::util::{reset_rng_state, fill_bytes, events};
  41 use lightning::util::logger::Logger;
  42 use lightning::util::config::UserConfig;
  43 use lightning::util::events::{EventsProvider, MessageSendEventsProvider};
  44 use lightning::util::ser::{Readable, Writeable};
  45
  46 mod utils;
  47 use utils::test_logger;
  48
  49 use secp256k1::key::{PublicKey,SecretKey};
  50 use secp256k1::Secp256k1;
  51
  52 use std::sync::{Arc,Mutex};
  53 use std::io::Cursor;
  54
  55 struct FuzzEstimator {}
  56 impl FeeEstimator for FuzzEstimator {
  57         fn get_est_sat_per_1000_weight(&self, _: ConfirmationTarget) -> u64 {
  58                 253
  59         }
  60 }
  61
  62 pub struct TestBroadcaster {}
  63 impl BroadcasterInterface for TestBroadcaster {
  64         fn broadcast_transaction(&self, _tx: &Transaction) { }
  65 }
  66
  67 pub struct TestChannelMonitor {
  68         pub simple_monitor: Arc<channelmonitor::SimpleManyChannelMonitor<OutPoint>>,
  69         pub update_ret: Mutex<Result<(), channelmonitor::ChannelMonitorUpdateErr>>,
  70 }
  71 impl TestChannelMonitor {
  72         pub fn new(chain_monitor: Arc<chaininterface::ChainWatchInterface>, broadcaster: Arc<chaininterface::BroadcasterInterface>, logger: Arc<Logger>, feeest: Arc<chaininterface::FeeEstimator>) -> Self {
  73                 Self {
  74                         simple_monitor: channelmonitor::SimpleManyChannelMonitor::new(chain_monitor, broadcaster, logger, feeest),
  75                         update_ret: Mutex::new(Ok(())),
  76                 }
  77         }
  78 }
  79 impl channelmonitor::ManyChannelMonitor for TestChannelMonitor {
  80         fn add_update_monitor(&self, funding_txo: OutPoint, monitor: channelmonitor::ChannelMonitor) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
  81                 assert!(self.simple_monitor.add_update_monitor(funding_txo, monitor).is_ok());
  82                 self.update_ret.lock().unwrap().clone()
  83         }
  84
  85         fn fetch_pending_htlc_updated(&self) -> Vec<HTLCUpdate> {
  86                 return self.simple_monitor.fetch_pending_htlc_updated();
  87         }
  88 }
  89
  90 struct KeyProvider {
  91         node_id: u8,
  92 }
  93 impl KeysInterface for KeyProvider {
  94         fn get_node_secret(&self) -> SecretKey {
  95                 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()
  96         }
  97
  98         fn get_destination_script(&self) -> Script {
  99                 let secp_ctx = Secp256k1::signing_only();
 100                 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();
 101                 let our_channel_monitor_claim_key_hash = Hash160::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
 102                 Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script()
 103         }
 104
 105         fn get_shutdown_pubkey(&self) -> PublicKey {
 106                 let secp_ctx = Secp256k1::signing_only();
 107                 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())
 108         }
 109
 110         fn get_channel_keys(&self, _inbound: bool) -> ChannelKeys {
 111                 ChannelKeys {
 112                         funding_key:               SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, self.node_id]).unwrap(),
 113                         revocation_base_key:       SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, self.node_id]).unwrap(),
 114                         payment_base_key:          SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, self.node_id]).unwrap(),
 115                         delayed_payment_base_key:  SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, self.node_id]).unwrap(),
 116                         htlc_base_key:             SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, self.node_id]).unwrap(),
 117                         commitment_seed: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, self.node_id],
 118                 }
 119         }
 120
 121         fn get_session_key(&self) -> SecretKey {
 122                 let mut session_key = [0; 32];
 123                 fill_bytes(&mut session_key);
 124                 SecretKey::from_slice(&session_key).unwrap()
 125         }
 126
 127         fn get_channel_id(&self) -> [u8; 32] {
 128                 let mut channel_id = [0; 32];
 129                 fill_bytes(&mut channel_id);
 130                 channel_id
 131         }
 132 }
 133
 134 #[inline]
 135 pub fn do_test(data: &[u8]) {
 136         reset_rng_state();
 137
 138         let fee_est = Arc::new(FuzzEstimator{});
 139         let broadcast = Arc::new(TestBroadcaster{});
 140
 141         macro_rules! make_node {
 142                 ($node_id: expr) => { {
 143                         let logger: Arc<Logger> = Arc::new(test_logger::TestLogger::new($node_id.to_string()));
 144                         let watch = Arc::new(ChainWatchInterfaceUtil::new(Network::Bitcoin, Arc::clone(&logger)));
 145                         let monitor = Arc::new(TestChannelMonitor::new(watch.clone(), broadcast.clone(), logger.clone(), fee_est.clone()));
 146
 147                         let keys_manager = Arc::new(KeyProvider { node_id: $node_id });
 148                         let mut config = UserConfig::new();
 149                         config.channel_options.fee_proportional_millionths = 0;
 150                         config.channel_options.announced_channel = true;
 151                         config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
 152                         (ChannelManager::new(Network::Bitcoin, fee_est.clone(), monitor.clone(), watch.clone(), broadcast.clone(), Arc::clone(&logger), keys_manager.clone(), config).unwrap(),
 153                         monitor)
 154                 } }
 155         }
 156
 157         let mut channel_txn = Vec::new();
 158         macro_rules! make_channel {
 159                 ($source: expr, $dest: expr, $chan_id: expr) => { {
 160                         $source.create_channel($dest.get_our_node_id(), 10000000, 42, 0).unwrap();
 161                         let open_channel = {
 162                                 let events = $source.get_and_clear_pending_msg_events();
 163                                 assert_eq!(events.len(), 1);
 164                                 if let events::MessageSendEvent::SendOpenChannel { ref msg, .. } = events[0] {
 165                                         msg.clone()
 166                                 } else { panic!("Wrong event type"); }
 167                         };
 168
 169                         $dest.handle_open_channel(&$source.get_our_node_id(), &open_channel).unwrap();
 170                         let accept_channel = {
 171                                 let events = $dest.get_and_clear_pending_msg_events();
 172                                 assert_eq!(events.len(), 1);
 173                                 if let events::MessageSendEvent::SendAcceptChannel { ref msg, .. } = events[0] {
 174                                         msg.clone()
 175                                 } else { panic!("Wrong event type"); }
 176                         };
 177
 178                         $source.handle_accept_channel(&$dest.get_our_node_id(), &accept_channel).unwrap();
 179                         {
 180                                 let events = $source.get_and_clear_pending_events();
 181                                 assert_eq!(events.len(), 1);
 182                                 if let events::Event::FundingGenerationReady { ref temporary_channel_id, ref channel_value_satoshis, ref output_script, .. } = events[0] {
 183                                         let tx = Transaction { version: $chan_id, lock_time: 0, input: Vec::new(), output: vec![TxOut {
 184                                                 value: *channel_value_satoshis, script_pubkey: output_script.clone(),
 185                                         }]};
 186                                         let funding_output = OutPoint::new(tx.txid(), 0);
 187                                         $source.funding_transaction_generated(&temporary_channel_id, funding_output);
 188                                         channel_txn.push(tx);
 189                                 } else { panic!("Wrong event type"); }
 190                         }
 191
 192                         let funding_created = {
 193                                 let events = $source.get_and_clear_pending_msg_events();
 194                                 assert_eq!(events.len(), 1);
 195                                 if let events::MessageSendEvent::SendFundingCreated { ref msg, .. } = events[0] {
 196                                         msg.clone()
 197                                 } else { panic!("Wrong event type"); }
 198                         };
 199                         $dest.handle_funding_created(&$source.get_our_node_id(), &funding_created).unwrap();
 200
 201                         let funding_signed = {
 202                                 let events = $dest.get_and_clear_pending_msg_events();
 203                                 assert_eq!(events.len(), 1);
 204                                 if let events::MessageSendEvent::SendFundingSigned { ref msg, .. } = events[0] {
 205                                         msg.clone()
 206                                 } else { panic!("Wrong event type"); }
 207                         };
 208                         $source.handle_funding_signed(&$dest.get_our_node_id(), &funding_signed).unwrap();
 209
 210                         {
 211                                 let events = $source.get_and_clear_pending_events();
 212                                 assert_eq!(events.len(), 1);
 213                                 if let events::Event::FundingBroadcastSafe { .. } = events[0] {
 214                                 } else { panic!("Wrong event type"); }
 215                         }
 216                 } }
 217         }
 218
 219         macro_rules! confirm_txn {
 220                 ($node: expr) => { {
 221                         let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 222                         let mut txn = Vec::with_capacity(channel_txn.len());
 223                         let mut posn = Vec::with_capacity(channel_txn.len());
 224                         for i in 0..channel_txn.len() {
 225                                 txn.push(&channel_txn[i]);
 226                                 posn.push(i as u32 + 1);
 227                         }
 228                         $node.block_connected(&header, 1, &txn, &posn);
 229                         for i in 2..100 {
 230                                 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 231                                 $node.block_connected(&header, i, &Vec::new(), &[0; 0]);
 232                         }
 233                 } }
 234         }
 235
 236         macro_rules! lock_fundings {
 237                 ($nodes: expr) => { {
 238                         let mut node_events = Vec::new();
 239                         for node in $nodes.iter() {
 240                                 node_events.push(node.get_and_clear_pending_msg_events());
 241                         }
 242                         for (idx, node_event) in node_events.iter().enumerate() {
 243                                 for event in node_event {
 244                                         if let events::MessageSendEvent::SendFundingLocked { ref node_id, ref msg } = event {
 245                                                 for node in $nodes.iter() {
 246                                                         if node.get_our_node_id() == *node_id {
 247                                                                 node.handle_funding_locked(&$nodes[idx].get_our_node_id(), msg).unwrap();
 248                                                         }
 249                                                 }
 250                                         } else { panic!("Wrong event type"); }
 251                                 }
 252                         }
 253
 254                         for node in $nodes.iter() {
 255                                 let events = node.get_and_clear_pending_msg_events();
 256                                 for event in events {
 257                                         if let events::MessageSendEvent::SendAnnouncementSignatures { .. } = event {
 258                                         } else { panic!("Wrong event type"); }
 259                                 }
 260                         }
 261                 } }
 262         }
 263
 264         // 3 nodes is enough to hit all the possible cases, notably unknown-source-unknown-dest
 265         // forwarding.
 266         let (node_a, monitor_a) = make_node!(0);
 267         let (node_b, monitor_b) = make_node!(1);
 268         let (node_c, monitor_c) = make_node!(2);
 269
 270         let nodes = [node_a, node_b, node_c];
 271
 272         make_channel!(nodes[0], nodes[1], 0);
 273         make_channel!(nodes[1], nodes[2], 1);
 274
 275         for node in nodes.iter() {
 276                 confirm_txn!(node);
 277         }
 278
 279         lock_fundings!(nodes);
 280
 281         let chan_a = nodes[0].list_usable_channels()[0].short_channel_id.unwrap();
 282         let chan_b = nodes[2].list_usable_channels()[0].short_channel_id.unwrap();
 283
 284         let mut payment_id = 0;
 285
 286         let mut chan_a_disconnected = false;
 287         let mut chan_b_disconnected = false;
 288         let mut chan_a_reconnecting = false;
 289         let mut chan_b_reconnecting = false;
 290
 291         macro_rules! test_err {
 292                 ($res: expr) => {
 293                         match $res {
 294                                 Ok(()) => {},
 295                                 Err(HandleError { action: Some(ErrorAction::IgnoreError), .. }) => { },
 296                                 _ => { $res.unwrap() },
 297                         }
 298                 }
 299         }
 300
 301         macro_rules! test_return {
 302                 () => { {
 303                         assert_eq!(nodes[0].list_channels().len(), 1);
 304                         assert_eq!(nodes[1].list_channels().len(), 2);
 305                         assert_eq!(nodes[2].list_channels().len(), 1);
 306                         return;
 307                 } }
 308         }
 309
 310         let mut read_pos = 0;
 311         macro_rules! get_slice {
 312                 ($len: expr) => {
 313                         {
 314                                 let slice_len = $len as usize;
 315                                 if data.len() < read_pos + slice_len {
 316                                         test_return!();
 317                                 }
 318                                 read_pos += slice_len;
 319                                 &data[read_pos - slice_len..read_pos]
 320                         }
 321                 }
 322         }
 323
 324         loop {
 325                 macro_rules! send_payment {
 326                         ($source: expr, $dest: expr) => { {
 327                                 let payment_hash = Sha256::hash(&[payment_id; 1]);
 328                                 payment_id = payment_id.wrapping_add(1);
 329                                 if let Err(_) = $source.send_payment(Route {
 330                                         hops: vec![RouteHop {
 331                                                 pubkey: $dest.0.get_our_node_id(),
 332                                                 short_channel_id: $dest.1,
 333                                                 fee_msat: 5000000,
 334                                                 cltv_expiry_delta: 200,
 335                                         }],
 336                                 }, PaymentHash(payment_hash.into_inner())) {
 337                                         // Probably ran out of funds
 338                                         test_return!();
 339                                 }
 340                         } };
 341                         ($source: expr, $middle: expr, $dest: expr) => { {
 342                                 let payment_hash = Sha256::hash(&[payment_id; 1]);
 343                                 payment_id = payment_id.wrapping_add(1);
 344                                 if let Err(_) = $source.send_payment(Route {
 345                                         hops: vec![RouteHop {
 346                                                 pubkey: $middle.0.get_our_node_id(),
 347                                                 short_channel_id: $middle.1,
 348                                                 fee_msat: 50000,
 349                                                 cltv_expiry_delta: 100,
 350                                         },RouteHop {
 351                                                 pubkey: $dest.0.get_our_node_id(),
 352                                                 short_channel_id: $dest.1,
 353                                                 fee_msat: 5000000,
 354                                                 cltv_expiry_delta: 200,
 355                                         }],
 356                                 }, PaymentHash(payment_hash.into_inner())) {
 357                                         // Probably ran out of funds
 358                                         test_return!();
 359                                 }
 360                         } }
 361                 }
 362
 363                 macro_rules! process_msg_events {
 364                         ($node: expr, $corrupt_forward: expr) => { {
 365                                 for event in nodes[$node].get_and_clear_pending_msg_events() {
 366                                         match event {
 367                                                 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 } } => {
 368                                                         for (idx, dest) in nodes.iter().enumerate() {
 369                                                                 if dest.get_our_node_id() == *node_id &&
 370                                                                                 (($node != 0 && idx != 0) || !chan_a_disconnected) &&
 371                                                                                 (($node != 2 && idx != 2) || !chan_b_disconnected) {
 372                                                                         assert!(update_fee.is_none());
 373                                                                         for update_add in update_add_htlcs {
 374                                                                                 if !$corrupt_forward {
 375                                                                                         test_err!(dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &update_add));
 376                                                                                 } else {
 377                                                                                         // Corrupt the update_add_htlc message so that its HMAC
 378                                                                                         // check will fail and we generate a
 379                                                                                         // update_fail_malformed_htlc instead of an
 380                                                                                         // update_fail_htlc as we do when we reject a payment.
 381                                                                                         let mut msg_ser = update_add.encode();
 382                                                                                         msg_ser[1000] ^= 0xff;
 383                                                                                         let new_msg = UpdateAddHTLC::read(&mut Cursor::new(&msg_ser)).unwrap();
 384                                                                                         test_err!(dest.handle_update_add_htlc(&nodes[$node].get_our_node_id(), &new_msg));
 385                                                                                 }
 386                                                                         }
 387                                                                         for update_fulfill in update_fulfill_htlcs {
 388                                                                                 test_err!(dest.handle_update_fulfill_htlc(&nodes[$node].get_our_node_id(), &update_fulfill));
 389                                                                         }
 390                                                                         for update_fail in update_fail_htlcs {
 391                                                                                 test_err!(dest.handle_update_fail_htlc(&nodes[$node].get_our_node_id(), &update_fail));
 392                                                                         }
 393                                                                         for update_fail_malformed in update_fail_malformed_htlcs {
 394                                                                                 test_err!(dest.handle_update_fail_malformed_htlc(&nodes[$node].get_our_node_id(), &update_fail_malformed));
 395                                                                         }
 396                                                                         test_err!(dest.handle_commitment_signed(&nodes[$node].get_our_node_id(), &commitment_signed));
 397                                                                 }
 398                                                         }
 399                                                 },
 400                                                 events::MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
 401                                                         for (idx, dest) in nodes.iter().enumerate() {
 402                                                                 if dest.get_our_node_id() == *node_id &&
 403                                                                                 (($node != 0 && idx != 0) || !chan_a_disconnected) &&
 404                                                                                 (($node != 2 && idx != 2) || !chan_b_disconnected) {
 405                                                                         test_err!(dest.handle_revoke_and_ack(&nodes[$node].get_our_node_id(), msg));
 406                                                                 }
 407                                                         }
 408                                                 },
 409                                                 events::MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } => {
 410                                                         for (idx, dest) in nodes.iter().enumerate() {
 411                                                                 if dest.get_our_node_id() == *node_id {
 412                                                                         test_err!(dest.handle_channel_reestablish(&nodes[$node].get_our_node_id(), msg));
 413                                                                         if $node == 0 || idx == 0 {
 414                                                                                 chan_a_reconnecting = false;
 415                                                                                 chan_a_disconnected = false;
 416                                                                         } else {
 417                                                                                 chan_b_reconnecting = false;
 418                                                                                 chan_b_disconnected = false;
 419                                                                         }
 420                                                                 }
 421                                                         }
 422                                                 },
 423                                                 events::MessageSendEvent::SendFundingLocked { .. } => {
 424                                                         // Can be generated as a reestablish response
 425                                                 },
 426                                                 events::MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {
 427                                                         // Can be generated due to a payment forward being rejected due to a
 428                                                         // channel having previously failed a monitor update
 429                                                 },
 430                                                 _ => panic!("Unhandled message event"),
 431                                         }
 432                                 }
 433                         } }
 434                 }
 435
 436                 macro_rules! process_events {
 437                         ($node: expr, $fail: expr) => { {
 438                                 for event in nodes[$node].get_and_clear_pending_events() {
 439                                         match event {
 440                                                 events::Event::PaymentReceived { payment_hash, .. } => {
 441                                                         if $fail {
 442                                                                 assert!(nodes[$node].fail_htlc_backwards(&payment_hash));
 443                                                         } else {
 444                                                                 assert!(nodes[$node].claim_funds(PaymentPreimage(payment_hash.0)));
 445                                                         }
 446                                                 },
 447                                                 events::Event::PaymentSent { .. } => {},
 448                                                 events::Event::PaymentFailed { .. } => {},
 449                                                 events::Event::PendingHTLCsForwardable { .. } => {
 450                                                         nodes[$node].process_pending_htlc_forwards();
 451                                                 },
 452                                                 _ => panic!("Unhandled event"),
 453                                         }
 454                                 }
 455                         } }
 456                 }
 457
 458                 match get_slice!(1)[0] {
 459                         0x00 => *monitor_a.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
 460                         0x01 => *monitor_b.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
 461                         0x02 => *monitor_c.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure),
 462                         0x03 => *monitor_a.update_ret.lock().unwrap() = Ok(()),
 463                         0x04 => *monitor_b.update_ret.lock().unwrap() = Ok(()),
 464                         0x05 => *monitor_c.update_ret.lock().unwrap() = Ok(()),
 465                         0x06 => nodes[0].test_restore_channel_monitor(),
 466                         0x07 => nodes[1].test_restore_channel_monitor(),
 467                         0x08 => nodes[2].test_restore_channel_monitor(),
 468                         0x09 => send_payment!(nodes[0], (&nodes[1], chan_a)),
 469                         0x0a => send_payment!(nodes[1], (&nodes[0], chan_a)),
 470                         0x0b => send_payment!(nodes[1], (&nodes[2], chan_b)),
 471                         0x0c => send_payment!(nodes[2], (&nodes[1], chan_b)),
 472                         0x0d => send_payment!(nodes[0], (&nodes[1], chan_a), (&nodes[2], chan_b)),
 473                         0x0e => send_payment!(nodes[2], (&nodes[1], chan_b), (&nodes[0], chan_a)),
 474                         0x0f => {
 475                                 if !chan_a_disconnected {
 476                                         nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
 477                                         nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
 478                                         chan_a_disconnected = true;
 479                                 }
 480                         },
 481                         0x10 => {
 482                                 if !chan_b_disconnected {
 483                                         nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
 484                                         nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
 485                                         chan_b_disconnected = true;
 486                                 }
 487                         },
 488                         0x11 => {
 489                                 if chan_a_disconnected && !chan_a_reconnecting {
 490                                         nodes[0].peer_connected(&nodes[1].get_our_node_id());
 491                                         nodes[1].peer_connected(&nodes[0].get_our_node_id());
 492                                         chan_a_reconnecting = true;
 493                                 }
 494                         },
 495                         0x12 => {
 496                                 if chan_b_disconnected && !chan_b_reconnecting {
 497                                         nodes[1].peer_connected(&nodes[2].get_our_node_id());
 498                                         nodes[2].peer_connected(&nodes[1].get_our_node_id());
 499                                         chan_b_reconnecting = true;
 500                                 }
 501                         },
 502                         0x13 => process_msg_events!(0, true),
 503                         0x14 => process_msg_events!(0, false),
 504                         0x15 => process_events!(0, true),
 505                         0x16 => process_events!(0, false),
 506                         0x17 => process_msg_events!(1, true),
 507                         0x18 => process_msg_events!(1, false),
 508                         0x19 => process_events!(1, true),
 509                         0x1a => process_events!(1, false),
 510                         0x1b => process_msg_events!(2, true),
 511                         0x1c => process_msg_events!(2, false),
 512                         0x1d => process_events!(2, true),
 513                         0x1e => process_events!(2, false),
 514                         _ => test_return!(),
 515                 }
 516         }
 517 }
 518
 519 #[cfg(feature = "afl")]
 520 #[macro_use] extern crate afl;
 521 #[cfg(feature = "afl")]
 522 fn main() {
 523         fuzz!(|data| {
 524                 do_test(data);
 525         });
 526 }
 527
 528 #[cfg(feature = "honggfuzz")]
 529 #[macro_use] extern crate honggfuzz;
 530 #[cfg(feature = "honggfuzz")]
 531 fn main() {
 532         loop {
 533                 fuzz!(|data| {
 534                         do_test(data);
 535                 });
 536         }
 537 }
 538
 539 #[cfg(feature = "libfuzzer_fuzz")]
 540 #[macro_use] extern crate libfuzzer_sys;
 541 #[cfg(feature = "libfuzzer_fuzz")]
 542 fuzz_target!(|data: &[u8]| {
 543         do_test(data);
 544 });
 545
 546 extern crate hex;
 547 #[cfg(test)]
 548 mod tests {
 549         #[test]
 550         fn duplicate_crash() {
 551                 super::do_test(&::hex::decode("00").unwrap());
 552         }
 553 }