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

   1 //! Test that no series of bytes received over the wire/connections created/payments sent can
   2 //! result in a crash. We do this by standing up a node and then reading bytes from input to denote
   3 //! actions such as creating new inbound/outbound connections, bytes to be read from a connection,
   4 //! or payments to send/ways to handle events generated.
   5 //! This test has been very useful, though due to its complexity good starting inputs are critical.
   6
   7 use bitcoin::blockdata::block::BlockHeader;
   8 use bitcoin::blockdata::transaction::{Transaction, TxOut};
   9 use bitcoin::blockdata::script::{Builder, Script};
  10 use bitcoin::blockdata::opcodes;
  11 use bitcoin::consensus::encode::deserialize;
  12 use bitcoin::network::constants::Network;
  13 use bitcoin::util::hash::BitcoinHash;
  14
  15 use bitcoin_hashes::Hash as TraitImport;
  16 use bitcoin_hashes::HashEngine as TraitImportEngine;
  17 use bitcoin_hashes::sha256::Hash as Sha256;
  18 use bitcoin_hashes::hash160::Hash as Hash160;
  19 use bitcoin_hashes::sha256d::Hash as Sha256dHash;
  20
  21 use lightning::chain::chaininterface::{BroadcasterInterface,ConfirmationTarget,ChainListener,FeeEstimator,ChainWatchInterfaceUtil};
  22 use lightning::chain::transaction::OutPoint;
  23 use lightning::chain::keysinterface::{InMemoryChannelKeys, KeysInterface};
  24 use lightning::ln::channelmonitor;
  25 use lightning::ln::channelmanager::{ChannelManager, PaymentHash, PaymentPreimage};
  26 use lightning::ln::peer_handler::{MessageHandler,PeerManager,SocketDescriptor};
  27 use lightning::ln::router::Router;
  28 use lightning::util::events::{EventsProvider,Event};
  29 use lightning::util::enforcing_trait_impls::EnforcingChannelKeys;
  30 use lightning::util::logger::Logger;
  31 use lightning::util::config::UserConfig;
  32
  33 use utils::test_logger;
  34
  35 use secp256k1::key::{PublicKey,SecretKey};
  36 use secp256k1::Secp256k1;
  37
  38 use std::cell::RefCell;
  39 use std::collections::{HashMap, hash_map};
  40 use std::cmp;
  41 use std::hash::Hash;
  42 use std::sync::Arc;
  43 use std::sync::atomic::{AtomicU64,AtomicUsize,Ordering};
  44
  45 #[inline]
  46 pub fn slice_to_be16(v: &[u8]) -> u16 {
  47         ((v[0] as u16) << 8*1) |
  48         ((v[1] as u16) << 8*0)
  49 }
  50
  51 #[inline]
  52 pub fn slice_to_be24(v: &[u8]) -> u32 {
  53         ((v[0] as u32) << 8*2) |
  54         ((v[1] as u32) << 8*1) |
  55         ((v[2] as u32) << 8*0)
  56 }
  57
  58 #[inline]
  59 pub fn slice_to_be32(v: &[u8]) -> u32 {
  60         ((v[0] as u32) << 8*3) |
  61         ((v[1] as u32) << 8*2) |
  62         ((v[2] as u32) << 8*1) |
  63         ((v[3] as u32) << 8*0)
  64 }
  65
  66 #[inline]
  67 pub fn be64_to_array(u: u64) -> [u8; 8] {
  68         let mut v = [0; 8];
  69         v[0] = ((u >> 8*7) & 0xff) as u8;
  70         v[1] = ((u >> 8*6) & 0xff) as u8;
  71         v[2] = ((u >> 8*5) & 0xff) as u8;
  72         v[3] = ((u >> 8*4) & 0xff) as u8;
  73         v[4] = ((u >> 8*3) & 0xff) as u8;
  74         v[5] = ((u >> 8*2) & 0xff) as u8;
  75         v[6] = ((u >> 8*1) & 0xff) as u8;
  76         v[7] = ((u >> 8*0) & 0xff) as u8;
  77         v
  78 }
  79
  80 struct InputData {
  81         data: Vec<u8>,
  82         read_pos: AtomicUsize,
  83 }
  84 impl InputData {
  85         fn get_slice(&self, len: usize) -> Option<&[u8]> {
  86                 let old_pos = self.read_pos.fetch_add(len, Ordering::AcqRel);
  87                 if self.data.len() < old_pos + len {
  88                         return None;
  89                 }
  90                 Some(&self.data[old_pos..old_pos + len])
  91         }
  92 }
  93
  94 struct FuzzEstimator {
  95         input: Arc<InputData>,
  96 }
  97 impl FeeEstimator for FuzzEstimator {
  98         fn get_est_sat_per_1000_weight(&self, _: ConfirmationTarget) -> u64 {
  99                 //TODO: We should actually be testing at least much more than 64k...
 100                 match self.input.get_slice(2) {
 101                         Some(slice) => cmp::max(slice_to_be16(slice) as u64, 253),
 102                         None => 0
 103                 }
 104         }
 105 }
 106
 107 struct TestBroadcaster {}
 108 impl BroadcasterInterface for TestBroadcaster {
 109         fn broadcast_transaction(&self, _tx: &Transaction) {}
 110 }
 111
 112 #[derive(Clone)]
 113 struct Peer<'a> {
 114         id: u8,
 115         peers_connected: &'a RefCell<[bool; 256]>,
 116 }
 117 impl<'a> SocketDescriptor for Peer<'a> {
 118         fn send_data(&mut self, data: &[u8], _resume_read: bool) -> usize {
 119                 data.len()
 120         }
 121         fn disconnect_socket(&mut self) {
 122                 assert!(self.peers_connected.borrow()[self.id as usize]);
 123                 self.peers_connected.borrow_mut()[self.id as usize] = false;
 124         }
 125 }
 126 impl<'a> PartialEq for Peer<'a> {
 127         fn eq(&self, other: &Self) -> bool {
 128                 self.id == other.id
 129         }
 130 }
 131 impl<'a> Eq for Peer<'a> {}
 132 impl<'a> Hash for Peer<'a> {
 133         fn hash<H : std::hash::Hasher>(&self, h: &mut H) {
 134                 self.id.hash(h)
 135         }
 136 }
 137
 138 struct MoneyLossDetector<'a> {
 139         manager: Arc<ChannelManager<EnforcingChannelKeys>>,
 140         monitor: Arc<channelmonitor::SimpleManyChannelMonitor<OutPoint>>,
 141         handler: PeerManager<Peer<'a>>,
 142
 143         peers: &'a RefCell<[bool; 256]>,
 144         funding_txn: Vec<Transaction>,
 145         txids_confirmed: HashMap<Sha256dHash, usize>,
 146         header_hashes: Vec<Sha256dHash>,
 147         height: usize,
 148         max_height: usize,
 149         blocks_connected: u32,
 150 }
 151 impl<'a> MoneyLossDetector<'a> {
 152         pub fn new(peers: &'a RefCell<[bool; 256]>, manager: Arc<ChannelManager<EnforcingChannelKeys>>, monitor: Arc<channelmonitor::SimpleManyChannelMonitor<OutPoint>>, handler: PeerManager<Peer<'a>>) -> Self {
 153                 MoneyLossDetector {
 154                         manager,
 155                         monitor,
 156                         handler,
 157
 158                         peers,
 159                         funding_txn: Vec::new(),
 160                         txids_confirmed: HashMap::new(),
 161                         header_hashes: vec![Default::default()],
 162                         height: 0,
 163                         max_height: 0,
 164                         blocks_connected: 0,
 165                 }
 166         }
 167
 168         fn connect_block(&mut self, all_txn: &[Transaction]) {
 169                 let mut txn = Vec::with_capacity(all_txn.len());
 170                 let mut txn_idxs = Vec::with_capacity(all_txn.len());
 171                 for (idx, tx) in all_txn.iter().enumerate() {
 172                         let txid = tx.txid();
 173                         match self.txids_confirmed.entry(txid) {
 174                                 hash_map::Entry::Vacant(e) => {
 175                                         e.insert(self.height);
 176                                         txn.push(tx);
 177                                         txn_idxs.push(idx as u32 + 1);
 178                                 },
 179                                 _ => {},
 180                         }
 181                 }
 182
 183                 let header = BlockHeader { version: 0x20000000, prev_blockhash: self.header_hashes[self.height], merkle_root: Default::default(), time: self.blocks_connected, bits: 42, nonce: 42 };
 184                 self.height += 1;
 185                 self.blocks_connected += 1;
 186                 self.manager.block_connected(&header, self.height as u32, &txn[..], &txn_idxs[..]);
 187                 (*self.monitor).block_connected(&header, self.height as u32, &txn[..], &txn_idxs[..]);
 188                 if self.header_hashes.len() > self.height {
 189                         self.header_hashes[self.height] = header.bitcoin_hash();
 190                 } else {
 191                         assert_eq!(self.header_hashes.len(), self.height);
 192                         self.header_hashes.push(header.bitcoin_hash());
 193                 }
 194                 self.max_height = cmp::max(self.height, self.max_height);
 195         }
 196
 197         fn disconnect_block(&mut self) {
 198                 if self.height > 0 && (self.max_height < 6 || self.height >= self.max_height - 6) {
 199                         let header = BlockHeader { version: 0x20000000, prev_blockhash: self.header_hashes[self.height], merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 200                         self.manager.block_disconnected(&header, self.height as u32);
 201                         self.monitor.block_disconnected(&header, self.height as u32);
 202                         self.height -= 1;
 203                         let removal_height = self.height;
 204                         self.txids_confirmed.retain(|_, height| {
 205                                 removal_height != *height
 206                         });
 207                 }
 208         }
 209 }
 210
 211 impl<'a> Drop for MoneyLossDetector<'a> {
 212         fn drop(&mut self) {
 213                 if !::std::thread::panicking() {
 214                         // Disconnect all peers
 215                         for (idx, peer) in self.peers.borrow().iter().enumerate() {
 216                                 if *peer {
 217                                         self.handler.disconnect_event(&Peer{id: idx as u8, peers_connected: &self.peers});
 218                                 }
 219                         }
 220
 221                         // Force all channels onto the chain (and time out claim txn)
 222                         self.manager.force_close_all_channels();
 223                 }
 224         }
 225 }
 226
 227 struct KeyProvider {
 228         node_secret: SecretKey,
 229         counter: AtomicU64,
 230 }
 231 impl KeysInterface for KeyProvider {
 232         type ChanKeySigner = EnforcingChannelKeys;
 233
 234         fn get_node_secret(&self) -> SecretKey {
 235                 self.node_secret.clone()
 236         }
 237
 238         fn get_destination_script(&self) -> Script {
 239                 let secp_ctx = Secp256k1::signing_only();
 240                 let channel_monitor_claim_key = SecretKey::from_slice(&hex::decode("0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()[..]).unwrap();
 241                 let our_channel_monitor_claim_key_hash = <Hash160 as bitcoin_hashes::Hash>::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
 242                 Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script()
 243         }
 244
 245         fn get_shutdown_pubkey(&self) -> PublicKey {
 246                 let secp_ctx = Secp256k1::signing_only();
 247                 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, 0, 0]).unwrap())
 248         }
 249
 250         fn get_channel_keys(&self, inbound: bool, channel_value_satoshis: u64) -> EnforcingChannelKeys {
 251                 let ctr = self.counter.fetch_add(1, Ordering::Relaxed) as u8;
 252                 EnforcingChannelKeys::new(if inbound {
 253                         InMemoryChannelKeys {
 254                                 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, 1, ctr]).unwrap(),
 255                                 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, 2, ctr]).unwrap(),
 256                                 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, 3, ctr]).unwrap(),
 257                                 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, 4, ctr]).unwrap(),
 258                                 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, 5, ctr]).unwrap(),
 259                                 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, 6, ctr],
 260                                 remote_channel_pubkeys: None,
 261                                 channel_value_satoshis: channel_value_satoshis,
 262                         }
 263                 } else {
 264                         InMemoryChannelKeys {
 265                                 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, 7, ctr]).unwrap(),
 266                                 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, 8, ctr]).unwrap(),
 267                                 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, 9, ctr]).unwrap(),
 268                                 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, 10, ctr]).unwrap(),
 269                                 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, 11, ctr]).unwrap(),
 270                                 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, 12, ctr],
 271                                 remote_channel_pubkeys: None,
 272                                 channel_value_satoshis: channel_value_satoshis,
 273                         }
 274                 })
 275         }
 276
 277         fn get_onion_rand(&self) -> (SecretKey, [u8; 32]) {
 278                 let ctr = self.counter.fetch_add(1, Ordering::Relaxed) as u8;
 279                 (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, 13, ctr]).unwrap(),
 280                 [0; 32])
 281         }
 282
 283         fn get_channel_id(&self) -> [u8; 32] {
 284                 let ctr = self.counter.fetch_add(1, Ordering::Relaxed);
 285                 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 286                 (ctr >> 8*7) as u8, (ctr >> 8*6) as u8, (ctr >> 8*5) as u8, (ctr >> 8*4) as u8, (ctr >> 8*3) as u8, (ctr >> 8*2) as u8, (ctr >> 8*1) as u8, 14, (ctr >> 8*0) as u8]
 287         }
 288 }
 289
 290 #[inline]
 291 pub fn do_test(data: &[u8], logger: &Arc<dyn Logger>) {
 292         let input = Arc::new(InputData {
 293                 data: data.to_vec(),
 294                 read_pos: AtomicUsize::new(0),
 295         });
 296         let fee_est = Arc::new(FuzzEstimator {
 297                 input: input.clone(),
 298         });
 299
 300         macro_rules! get_slice {
 301                 ($len: expr) => {
 302                         match input.get_slice($len as usize) {
 303                                 Some(slice) => slice,
 304                                 None => return,
 305                         }
 306                 }
 307         }
 308
 309         macro_rules! get_pubkey {
 310                 () => {
 311                         match PublicKey::from_slice(get_slice!(33)) {
 312                                 Ok(key) => key,
 313                                 Err(_) => return,
 314                         }
 315                 }
 316         }
 317
 318         let our_network_key = match SecretKey::from_slice(get_slice!(32)) {
 319                 Ok(key) => key,
 320                 Err(_) => return,
 321         };
 322
 323         let watch = Arc::new(ChainWatchInterfaceUtil::new(Network::Bitcoin, Arc::clone(&logger)));
 324         let broadcast = Arc::new(TestBroadcaster{});
 325         let monitor = channelmonitor::SimpleManyChannelMonitor::new(watch.clone(), broadcast.clone(), Arc::clone(&logger), fee_est.clone());
 326
 327         let keys_manager = Arc::new(KeyProvider { node_secret: our_network_key.clone(), counter: AtomicU64::new(0) });
 328         let mut config = UserConfig::default();
 329         config.channel_options.fee_proportional_millionths =  slice_to_be32(get_slice!(4));
 330         config.channel_options.announced_channel = get_slice!(1)[0] != 0;
 331         config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
 332         let channelmanager = ChannelManager::new(Network::Bitcoin, fee_est.clone(), monitor.clone(), broadcast.clone(), Arc::clone(&logger), keys_manager.clone(), config, 0).unwrap();
 333         let router = Arc::new(Router::new(PublicKey::from_secret_key(&Secp256k1::signing_only(), &keys_manager.get_node_secret()), watch.clone(), Arc::clone(&logger)));
 334
 335         let peers = RefCell::new([false; 256]);
 336         let mut loss_detector = MoneyLossDetector::new(&peers, channelmanager.clone(), monitor.clone(), PeerManager::new(MessageHandler {
 337                 chan_handler: channelmanager.clone(),
 338                 route_handler: router.clone(),
 339         }, our_network_key, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 15, 0], Arc::clone(&logger)));
 340
 341         let mut should_forward = false;
 342         let mut payments_received: Vec<(PaymentHash, u64)> = Vec::new();
 343         let mut payments_sent = 0;
 344         let mut pending_funding_generation: Vec<([u8; 32], u64, Script)> = Vec::new();
 345         let mut pending_funding_signatures = HashMap::new();
 346         let mut pending_funding_relay = Vec::new();
 347
 348         loop {
 349                 match get_slice!(1)[0] {
 350                         0 => {
 351                                 let mut new_id = 0;
 352                                 for i in 1..256 {
 353                                         if !peers.borrow()[i-1] {
 354                                                 new_id = i;
 355                                                 break;
 356                                         }
 357                                 }
 358                                 if new_id == 0 { return; }
 359                                 loss_detector.handler.new_outbound_connection(get_pubkey!(), Peer{id: (new_id - 1) as u8, peers_connected: &peers}).unwrap();
 360                                 peers.borrow_mut()[new_id - 1] = true;
 361                         },
 362                         1 => {
 363                                 let mut new_id = 0;
 364                                 for i in 1..256 {
 365                                         if !peers.borrow()[i-1] {
 366                                                 new_id = i;
 367                                                 break;
 368                                         }
 369                                 }
 370                                 if new_id == 0 { return; }
 371                                 loss_detector.handler.new_inbound_connection(Peer{id: (new_id - 1) as u8, peers_connected: &peers}).unwrap();
 372                                 peers.borrow_mut()[new_id - 1] = true;
 373                         },
 374                         2 => {
 375                                 let peer_id = get_slice!(1)[0];
 376                                 if !peers.borrow()[peer_id as usize] { return; }
 377                                 loss_detector.handler.disconnect_event(&Peer{id: peer_id, peers_connected: &peers});
 378                                 peers.borrow_mut()[peer_id as usize] = false;
 379                         },
 380                         3 => {
 381                                 let peer_id = get_slice!(1)[0];
 382                                 if !peers.borrow()[peer_id as usize] { return; }
 383                                 match loss_detector.handler.read_event(&mut Peer{id: peer_id, peers_connected: &peers}, get_slice!(get_slice!(1)[0]).to_vec()) {
 384                                         Ok(res) => assert!(!res),
 385                                         Err(_) => { peers.borrow_mut()[peer_id as usize] = false; }
 386                                 }
 387                         },
 388                         4 => {
 389                                 let value = slice_to_be24(get_slice!(3)) as u64;
 390                                 let route = match router.get_route(&get_pubkey!(), None, &Vec::new(), value, 42) {
 391                                         Ok(route) => route,
 392                                         Err(_) => return,
 393                                 };
 394                                 let mut payment_hash = PaymentHash([0; 32]);
 395                                 payment_hash.0[0..8].copy_from_slice(&be64_to_array(payments_sent));
 396                                 let mut sha = Sha256::engine();
 397                                 sha.input(&payment_hash.0[..]);
 398                                 payment_hash.0 = Sha256::from_engine(sha).into_inner();
 399                                 payments_sent += 1;
 400                                 match channelmanager.send_payment(route, payment_hash) {
 401                                         Ok(_) => {},
 402                                         Err(_) => return,
 403                                 }
 404                         },
 405                         5 => {
 406                                 let peer_id = get_slice!(1)[0];
 407                                 if !peers.borrow()[peer_id as usize] { return; }
 408                                 let their_key = get_pubkey!();
 409                                 let chan_value = slice_to_be24(get_slice!(3)) as u64;
 410                                 let push_msat_value = slice_to_be24(get_slice!(3)) as u64;
 411                                 if channelmanager.create_channel(their_key, chan_value, push_msat_value, 0).is_err() { return; }
 412                         },
 413                         6 => {
 414                                 let mut channels = channelmanager.list_channels();
 415                                 let channel_id = get_slice!(1)[0] as usize;
 416                                 if channel_id >= channels.len() { return; }
 417                                 channels.sort_by(|a, b| { a.channel_id.cmp(&b.channel_id) });
 418                                 if channelmanager.close_channel(&channels[channel_id].channel_id).is_err() { return; }
 419                         },
 420                         7 => {
 421                                 if should_forward {
 422                                         channelmanager.process_pending_htlc_forwards();
 423                                         should_forward = false;
 424                                 }
 425                         },
 426                         8 => {
 427                                 for (payment, amt) in payments_received.drain(..) {
 428                                         // SHA256 is defined as XOR of all input bytes placed in the first byte, and 0s
 429                                         // for the remaining bytes. Thus, if not all remaining bytes are 0s we cannot
 430                                         // fulfill this HTLC, but if they are, we can just take the first byte and
 431                                         // place that anywhere in our preimage.
 432                                         if &payment.0[1..] != &[0; 31] {
 433                                                 channelmanager.fail_htlc_backwards(&payment);
 434                                         } else {
 435                                                 let mut payment_preimage = PaymentPreimage([0; 32]);
 436                                                 payment_preimage.0[0] = payment.0[0];
 437                                                 channelmanager.claim_funds(payment_preimage, amt);
 438                                         }
 439                                 }
 440                         },
 441                         9 => {
 442                                 for (payment, _) in payments_received.drain(..) {
 443                                         channelmanager.fail_htlc_backwards(&payment);
 444                                 }
 445                         },
 446                         10 => {
 447                                 'outer_loop: for funding_generation in pending_funding_generation.drain(..) {
 448                                         let mut tx = Transaction { version: 0, lock_time: 0, input: Vec::new(), output: vec![TxOut {
 449                                                         value: funding_generation.1, script_pubkey: funding_generation.2,
 450                                                 }] };
 451                                         let funding_output = 'search_loop: loop {
 452                                                 let funding_txid = tx.txid();
 453                                                 if let None = loss_detector.txids_confirmed.get(&funding_txid) {
 454                                                         let outpoint = OutPoint::new(funding_txid, 0);
 455                                                         for chan in channelmanager.list_channels() {
 456                                                                 if chan.channel_id == outpoint.to_channel_id() {
 457                                                                         tx.version += 1;
 458                                                                         continue 'search_loop;
 459                                                                 }
 460                                                         }
 461                                                         break outpoint;
 462                                                 }
 463                                                 tx.version += 1;
 464                                                 if tx.version > 0xff {
 465                                                         continue 'outer_loop;
 466                                                 }
 467                                         };
 468                                         channelmanager.funding_transaction_generated(&funding_generation.0, funding_output.clone());
 469                                         pending_funding_signatures.insert(funding_output, tx);
 470                                 }
 471                         },
 472                         11 => {
 473                                 if !pending_funding_relay.is_empty() {
 474                                         loss_detector.connect_block(&pending_funding_relay[..]);
 475                                         for _ in 2..100 {
 476                                                 loss_detector.connect_block(&[]);
 477                                         }
 478                                 }
 479                                 for tx in pending_funding_relay.drain(..) {
 480                                         loss_detector.funding_txn.push(tx);
 481                                 }
 482                         },
 483                         12 => {
 484                                 let txlen = slice_to_be16(get_slice!(2));
 485                                 if txlen == 0 {
 486                                         loss_detector.connect_block(&[]);
 487                                 } else {
 488                                         let txres: Result<Transaction, _> = deserialize(get_slice!(txlen));
 489                                         if let Ok(tx) = txres {
 490                                                 loss_detector.connect_block(&[tx]);
 491                                         } else {
 492                                                 return;
 493                                         }
 494                                 }
 495                         },
 496                         13 => {
 497                                 loss_detector.disconnect_block();
 498                         },
 499                         14 => {
 500                                 let mut channels = channelmanager.list_channels();
 501                                 let channel_id = get_slice!(1)[0] as usize;
 502                                 if channel_id >= channels.len() { return; }
 503                                 channels.sort_by(|a, b| { a.channel_id.cmp(&b.channel_id) });
 504                                 channelmanager.force_close_channel(&channels[channel_id].channel_id);
 505                         },
 506                         _ => return,
 507                 }
 508                 loss_detector.handler.process_events();
 509                 for event in loss_detector.manager.get_and_clear_pending_events() {
 510                         match event {
 511                                 Event::FundingGenerationReady { temporary_channel_id, channel_value_satoshis, output_script, .. } => {
 512                                         pending_funding_generation.push((temporary_channel_id, channel_value_satoshis, output_script));
 513                                 },
 514                                 Event::FundingBroadcastSafe { funding_txo, .. } => {
 515                                         pending_funding_relay.push(pending_funding_signatures.remove(&funding_txo).unwrap());
 516                                 },
 517                                 Event::PaymentReceived { payment_hash, amt } => {
 518                                         //TODO: enhance by fetching random amounts from fuzz input?
 519                                         payments_received.push((payment_hash, amt));
 520                                 },
 521                                 Event::PaymentSent {..} => {},
 522                                 Event::PaymentFailed {..} => {},
 523                                 Event::PendingHTLCsForwardable {..} => {
 524                                         should_forward = true;
 525                                 },
 526                                 Event::SpendableOutputs {..} => {},
 527                         }
 528                 }
 529         }
 530 }
 531
 532 #[no_mangle]
 533 pub extern "C" fn full_stack_run(data: *const u8, datalen: usize) {
 534         let logger: Arc<dyn Logger> = Arc::new(test_logger::TestLogger::new("".to_owned()));
 535         do_test(unsafe { std::slice::from_raw_parts(data, datalen) }, &logger);
 536 }
 537
 538 #[cfg(test)]
 539 mod tests {
 540         use utils::test_logger;
 541         use lightning::util::logger::{Logger, Record};
 542         use std::collections::HashMap;
 543         use std::sync::{Arc, Mutex};
 544
 545         #[test]
 546         fn duplicate_crash() {
 547                 let logger: Arc<dyn Logger> = Arc::new(test_logger::TestLogger::new("".to_owned()));
 548                 super::do_test(&::hex::decode("00").unwrap(), &logger);
 549         }
 550
 551         struct TrackingLogger {
 552                 /// (module, message) -> count
 553                 pub lines: Mutex<HashMap<(String, String), usize>>,
 554         }
 555         impl Logger for TrackingLogger {
 556                 fn log(&self, record: &Record) {
 557                         *self.lines.lock().unwrap().entry((record.module_path.to_string(), format!("{}", record.args))).or_insert(0) += 1;
 558                         println!("{:<5} [{} : {}, {}] {}", record.level.to_string(), record.module_path, record.file, record.line, record.args);
 559                 }
 560         }
 561
 562         #[test]
 563         fn test_no_existing_test_breakage() {
 564                 // To avoid accidentally causing all existing fuzz test cases to be useless by making minor
 565                 // changes (such as requesting feerate info in a new place), we run a pretty full
 566                 // step-through with two peers and HTLC forwarding here. Obviously this is pretty finicky,
 567                 // so this should be updated pretty liberally, but at least we'll know when changes occur.
 568                 // If nothing else, this test serves as a pretty great initial full_stack_target seed.
 569
 570                 // What each byte represents is broken down below, and then everything is concatenated into
 571                 // one large test at the end (you want %s/ -.*//g %s/\n\| \|\t\|\///g).
 572
 573                 // Following BOLT 8, lightning message on the wire are: 2-byte encrypted message length +
 574                 // 16-byte MAC of the encrypted message length + encrypted Lightning message + 16-byte MAC
 575                 // of the Lightning message
 576                 // I.e 2nd inbound read, len 18 : 0006 (encrypted message length) + 03000000000000000000000000000000 (MAC of the encrypted message length)
 577                 // Len 22 : 0010 00000000 (encrypted lightning message) + 03000000000000000000000000000000 (MAC of the Lightning message)
 578
 579                 // Writing new code generating transactions and see a new failure ? Don't forget to add input for the FuzzEstimator !
 580
 581                 // 0000000000000000000000000000000000000000000000000000000000000000 - our network key
 582                 // 00000000 - fee_proportional_millionths
 583                 // 01 - announce_channels_publicly
 584                 //
 585                 // 00 - new outbound connection with id 0
 586                 // 030000000000000000000000000000000000000000000000000000000000000000 - peer's pubkey
 587                 // 030032 - inbound read from peer id 0 of len 50
 588                 // 00 030000000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - noise act two (0||pubkey||mac)
 589                 //
 590                 // 030012 - inbound read from peer id 0 of len 18
 591                 // 0006 03000000000000000000000000000000 - message header indicating message length 6
 592                 // 030016 - inbound read from peer id 0 of len 22
 593                 // 0010 00000000 03000000000000000000000000000000 - init message with no features (type 16) and mac
 594                 //
 595                 // 030012 - inbound read from peer id 0 of len 18
 596                 // 0141 03000000000000000000000000000000 - message header indicating message length 321
 597                 // 0300fe - inbound read from peer id 0 of len 254
 598                 // 0020 7500000000000000000000000000000000000000000000000000000000000000 ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679 000000000000c350 0000000000000000 0000000000000222 ffffffffffffffff 0000000000000222 0000000000000000 000000fd 0006 01e3 030000000000000000000000000000000000000000000000000000000000000001 030000000000000000000000000000000000000000000000000000000000000002 030000000000000000000000000000000000000000000000000000000000000003 030000000000000000000000000000000000000000000000000000000000000004 - beginning of open_channel message
 599                 // 030053 - inbound read from peer id 0 of len 83
 600                 // 030000000000000000000000000000000000000000000000000000000000000005 030000000000000000000000000000000000000000000000000000000000000000 01 03000000000000000000000000000000 - rest of open_channel and mac
 601                 //
 602                 // 00fd00fd00fd - Three feerate requests (all returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 603                 // - client should now respond with accept_channel (CHECK 1: type 33 to peer 03000000)
 604                 //
 605                 // 030012 - inbound read from peer id 0 of len 18
 606                 // 0084 03000000000000000000000000000000 - message header indicating message length 132
 607                 // 030094 - inbound read from peer id 0 of len 148
 608                 // 0022 ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679 3d00000000000000000000000000000000000000000000000000000000000000 0000 5c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 03000000000000000000000000000000 - funding_created and mac
 609                 // - client should now respond with funding_signed (CHECK 2: type 35 to peer 03000000)
 610                 //
 611                 // 0c005e - connect a block with one transaction of len 94
 612                 // 020000000100000000000000000000000000000000000000000000000000000000000000000000000000ffffffff0150c3000000000000220020ae0000000000000000000000000000000000000000000000000000000000000000000000 - the funding transaction
 613                 // 0c0000 - connect a block with no transactions
 614                 // 0c0000 - connect a block with no transactions
 615                 // 0c0000 - connect a block with no transactions
 616                 // 0c0000 - connect a block with no transactions
 617                 // 0c0000 - connect a block with no transactions
 618                 // 0c0000 - connect a block with no transactions
 619                 // 0c0000 - connect a block with no transactions
 620                 // 0c0000 - connect a block with no transactions
 621                 // 0c0000 - connect a block with no transactions
 622                 // 0c0000 - connect a block with no transactions
 623                 // 0c0000 - connect a block with no transactions
 624                 // 0c0000 - connect a block with no transactions
 625                 // - by now client should have sent a funding_locked (CHECK 3: SendFundingLocked to 03000000 for chan 3d000000)
 626                 //
 627                 // 030012 - inbound read from peer id 0 of len 18
 628                 // 0043 03000000000000000000000000000000 - message header indicating message length 67
 629                 // 030053 - inbound read from peer id 0 of len 83
 630                 // 0024 3d00000000000000000000000000000000000000000000000000000000000000 030100000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - funding_locked and mac
 631                 //
 632                 // 01 - new inbound connection with id 1
 633                 // 030132 - inbound read from peer id 1 of len 50
 634                 // 0003000000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000 - inbound noise act 1
 635                 // 030142 - inbound read from peer id 1 of len 66
 636                 // 000302000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000003000000000000000000000000000000 - inbound noise act 3
 637                 //
 638                 // 030112 - inbound read from peer id 1 of len 18
 639                 // 0006 01000000000000000000000000000000 - message header indicating message length 6
 640                 // 030116 - inbound read from peer id 1 of len 22
 641                 // 0010 00000000 01000000000000000000000000000000 - init message with no features (type 16)
 642                 //
 643                 // 05 01 030200000000000000000000000000000000000000000000000000000000000000 00c350 0003e8 - create outbound channel to peer 1 for 50k sat
 644                 // 00fd00fd00fd - Three feerate requests (all returning min feerate) (gonna be ingested by FuzzEstimator)
 645                 //
 646                 // 030112 - inbound read from peer id 1 of len 18
 647                 // 0110 01000000000000000000000000000000 - message header indicating message length 272
 648                 // 0301ff - inbound read from peer id 1 of len 255
 649                 // 0021 0000000000000000000000000000000000000000000000000000000000000e02 000000000000001a 00000000004c4b40 00000000000003e8 00000000000003e8 00000002 03f0 0005 030000000000000000000000000000000000000000000000000000000000000100 030000000000000000000000000000000000000000000000000000000000000200 030000000000000000000000000000000000000000000000000000000000000300 030000000000000000000000000000000000000000000000000000000000000400 030000000000000000000000000000000000000000000000000000000000000500 03000000000000000000000000000000 - beginning of accept_channel
 650                 // 030121 - inbound read from peer id 1 of len 33
 651                 // 0000000000000000000000000000000000 01000000000000000000000000000000 - rest of accept_channel and mac
 652                 //
 653                 // 0a - create the funding transaction (client should send funding_created now)
 654                 //
 655                 // 030112 - inbound read from peer id 1 of len 18
 656                 // 0062 01000000000000000000000000000000 - message header indicating message length 98
 657                 // 030172 - inbound read from peer id 1 of len 114
 658                 // 0023 3900000000000000000000000000000000000000000000000000000000000000 f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 01000000000000000000000000000000 - funding_signed message and mac
 659                 //
 660                 // 0b - broadcast funding transaction
 661                 // - by now client should have sent a funding_locked (CHECK 4: SendFundingLocked to 03020000 for chan 3f000000)
 662                 //
 663                 // 030112 - inbound read from peer id 1 of len 18
 664                 // 0043 01000000000000000000000000000000 - message header indicating message length 67
 665                 // 030153 - inbound read from peer id 1 of len 83
 666                 // 0024 3900000000000000000000000000000000000000000000000000000000000000 030100000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - funding_locked and mac
 667                 //
 668                 // 030012 - inbound read from peer id 0 of len 18
 669                 // 05ac 03000000000000000000000000000000 - message header indicating message length 1452
 670                 // 0300ff - inbound read from peer id 0 of len 255
 671                 // 0080 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000000 0000000000003e80 ff00000000000000000000000000000000000000000000000000000000000000 00000121 00 030000000000000000000000000000000000000000000000000000000000000555 0000000e000001000000000000000003e8000000010000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff - beginning of update_add_htlc from 0 to 1 via client
 672                 // 0300ff - inbound read from peer id 0 of len 255
 673                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 674                 // 0300ff - inbound read from peer id 0 of len 255
 675                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 676                 // 0300ff - inbound read from peer id 0 of len 255
 677                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 678                 // 0300ff - inbound read from peer id 0 of len 255
 679                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 680                 // 0300c1 - inbound read from peer id 0 of len 193
 681                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ef00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - end of update_add_htlc from 0 to 1 via client and mac
 682                 //
 683                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 684                 //
 685                 // 030012 - inbound read from peer id 0 of len 18
 686                 // 0064 03000000000000000000000000000000 - message header indicating message length 100
 687                 // 030074 - inbound read from peer id 0 of len 116
 688                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 4d000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 0000 03000000000000000000000000000000 - commitment_signed and mac
 689                 // - client should now respond with revoke_and_ack and commitment_signed (CHECK 5/6: types 133 and 132 to peer 03000000)
 690                 //
 691                 // 030012 - inbound read from peer id 0 of len 18
 692                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 693                 // 030073 - inbound read from peer id 0 of len 115
 694                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 030200000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 695                 //
 696                 // 07 - process the now-pending HTLC forward
 697                 // - client now sends id 1 update_add_htlc and commitment_signed (CHECK 7: SendHTLCs event for node 03020000 with 1 HTLCs for channel 3f000000)
 698                 //
 699                 // - we respond with commitment_signed then revoke_and_ack (a weird, but valid, order)
 700                 // 030112 - inbound read from peer id 1 of len 18
 701                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 702                 // 030174 - inbound read from peer id 1 of len 116
 703                 // 0084 3900000000000000000000000000000000000000000000000000000000000000 f1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 0000 01000000000000000000000000000000 - commitment_signed and mac
 704                 //
 705                 // 030112 - inbound read from peer id 1 of len 18
 706                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 707                 // 030173 - inbound read from peer id 1 of len 115
 708                 // 0085 3900000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 030200000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 709                 //
 710                 // 030112 - inbound read from peer id 1 of len 18
 711                 // 004a 01000000000000000000000000000000 - message header indicating message length 74
 712                 // 03015a - inbound read from peer id 1 of len 90
 713                 // 0082 3900000000000000000000000000000000000000000000000000000000000000 0000000000000000 ff00888888888888888888888888888888888888888888888888888888888888 01000000000000000000000000000000 - update_fulfill_htlc and mac
 714                 // - client should immediately claim the pending HTLC from peer 0 (CHECK 8: SendFulfillHTLCs for node 03000000 with preimage ff00888888 for channel 3d000000)
 715                 //
 716                 // 030112 - inbound read from peer id 1 of len 18
 717                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 718                 // 030174 - inbound read from peer id 1 of len 116
 719                 // 0084 3900000000000000000000000000000000000000000000000000000000000000 fd000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 0000 01000000000000000000000000000000 - commitment_signed and mac
 720                 //
 721                 // 030112 - inbound read from peer id 1 of len 18
 722                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 723                 // 030173 - inbound read from peer id 1 of len 115
 724                 // 0085 3900000000000000000000000000000000000000000000000000000000000000 0100000000000000000000000000000000000000000000000000000000000000 030300000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 725                 //
 726                 // - before responding to the commitment_signed generated above, send a new HTLC
 727                 // 030012 - inbound read from peer id 0 of len 18
 728                 // 05ac 03000000000000000000000000000000 - message header indicating message length 1452
 729                 // 0300ff - inbound read from peer id 0 of len 255
 730                 // 0080 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000001 0000000000003e80 ff00000000000000000000000000000000000000000000000000000000000000 00000121 00 030000000000000000000000000000000000000000000000000000000000000555 0000000e000001000000000000000003e8000000010000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff - beginning of update_add_htlc from 0 to 1 via client
 731                 // 0300ff - inbound read from peer id 0 of len 255
 732                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 733                 // 0300ff - inbound read from peer id 0 of len 255
 734                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 735                 // 0300ff - inbound read from peer id 0 of len 255
 736                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 737                 // 0300ff - inbound read from peer id 0 of len 255
 738                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 739                 // 0300c1 - inbound read from peer id 0 of len 193
 740                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ef00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - end of update_add_htlc from 0 to 1 via client and mac
 741                 //
 742                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 743                 //
 744                 // - now respond to the update_fulfill_htlc+commitment_signed messages the client sent to peer 0
 745                 // 030012 - inbound read from peer id 0 of len 18
 746                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 747                 // 030073 - inbound read from peer id 0 of len 115
 748                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0100000000000000000000000000000000000000000000000000000000000000 030300000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 749                 // - client should now respond with revoke_and_ack and commitment_signed (CHECK 5/6 duplicates)
 750                 //
 751                 // 030012 - inbound read from peer id 0 of len 18
 752                 // 0064 03000000000000000000000000000000 - message header indicating message length 100
 753                 // 030074 - inbound read from peer id 0 of len 116
 754                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 be000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 0000 03000000000000000000000000000000 - commitment_signed and mac
 755                 //
 756                 // 030012 - inbound read from peer id 0 of len 18
 757                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 758                 // 030073 - inbound read from peer id 0 of len 115
 759                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0200000000000000000000000000000000000000000000000000000000000000 030400000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 760                 //
 761                 // 07 - process the now-pending HTLC forward
 762                 // - client now sends id 1 update_add_htlc and commitment_signed (CHECK 7 duplicate)
 763                 // - we respond with revoke_and_ack, then commitment_signed, then update_fail_htlc
 764                 //
 765                 // 030112 - inbound read from peer id 1 of len 18
 766                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 767                 // 030174 - inbound read from peer id 1 of len 116
 768                 // 0084 3900000000000000000000000000000000000000000000000000000000000000 fc000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 0000 01000000000000000000000000000000 - commitment_signed and mac
 769                 //
 770                 // 030112 - inbound read from peer id 1 of len 18
 771                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 772                 // 030173 - inbound read from peer id 1 of len 115
 773                 // 0085 3900000000000000000000000000000000000000000000000000000000000000 0200000000000000000000000000000000000000000000000000000000000000 030400000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 774                 //
 775                 // 030112 - inbound read from peer id 1 of len 18
 776                 // 002c 01000000000000000000000000000000 - message header indicating message length 44
 777                 // 03013c - inbound read from peer id 1 of len 60
 778                 // 0083 3900000000000000000000000000000000000000000000000000000000000000 0000000000000001 0000 01000000000000000000000000000000 - update_fail_htlc and mac
 779                 //
 780                 // 030112 - inbound read from peer id 1 of len 18
 781                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 782                 // 030174 - inbound read from peer id 1 of len 116
 783                 // 0084 3900000000000000000000000000000000000000000000000000000000000000 fb000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 0000 01000000000000000000000000000000 - commitment_signed and mac
 784                 //
 785                 // 030112 - inbound read from peer id 1 of len 18
 786                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 787                 // 030173 - inbound read from peer id 1 of len 115
 788                 // 0085 3900000000000000000000000000000000000000000000000000000000000000 0300000000000000000000000000000000000000000000000000000000000000 030500000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 789                 //
 790                 // 07 - process the now-pending HTLC forward
 791                 // - client now sends id 0 update_fail_htlc and commitment_signed (CHECK 9)
 792                 // - now respond to the update_fail_htlc+commitment_signed messages the client sent to peer 0
 793                 //
 794                 // 030012 - inbound read from peer id 0 of len 18
 795                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 796                 // 030073 - inbound read from peer id 0 of len 115
 797                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0300000000000000000000000000000000000000000000000000000000000000 030500000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 798                 //
 799                 // 030012 - inbound read from peer id 0 of len 18
 800                 // 0064 03000000000000000000000000000000 - message header indicating message length 100
 801                 // 030074 - inbound read from peer id 0 of len 116
 802                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 4f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 0000 03000000000000000000000000000000 - commitment_signed and mac
 803                 // - client should now respond with revoke_and_ack (CHECK 5 duplicate)
 804                 //
 805                 // 030012 - inbound read from peer id 0 of len 18
 806                 // 05ac 03000000000000000000000000000000 - message header indicating message length 1452
 807                 // 0300ff - inbound read from peer id 0 of len 255
 808                 // 0080 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000002 00000000000b0838 ff00000000000000000000000000000000000000000000000000000000000000 00000121 00 030000000000000000000000000000000000000000000000000000000000000555 0000000e0000010000000000000003e800000000010000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff - beginning of update_add_htlc from 0 to 1 via client
 809                 // 0300ff - inbound read from peer id 0 of len 255
 810                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 811                 // 0300ff - inbound read from peer id 0 of len 255
 812                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 813                 // 0300ff - inbound read from peer id 0 of len 255
 814                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 815                 // 0300ff - inbound read from peer id 0 of len 255
 816                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 817                 // 0300c1 - inbound read from peer id 0 of len 193
 818                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ef00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - end of update_add_htlc from 0 to 1 via client and mac
 819                 //
 820                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 821                 //
 822                 // 030012 - inbound read from peer id 0 of len 18
 823                 // 00a4 03000000000000000000000000000000 - message header indicating message length 164
 824                 // 0300b4 - inbound read from peer id 0 of len 180
 825                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 07000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 0001 c8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007f00000000000000 03000000000000000000000000000000 - commitment_signed and mac
 826                 // - client should now respond with revoke_and_ack and commitment_signed (CHECK 5/6 duplicates)
 827                 //
 828                 // 030012 - inbound read from peer id 0 of len 18
 829                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 830                 // 030073 - inbound read from peer id 0 of len 115
 831                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0400000000000000000000000000000000000000000000000000000000000000 030600000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 832                 //
 833                 // 07 - process the now-pending HTLC forward
 834                 // - client now sends id 1 update_add_htlc and commitment_signed (CHECK 7 duplicate)
 835                 //
 836                 // 0c007d - connect a block with one transaction of len 125
 837                 // 0200000001390000000000000000000000000000000000000000000000000000000000000000000000000000008002000100000000000022002090000000000000000000000000000000000000000000000000000000000000006cc10000000000001600145c0000000000000000000000000000000000000005000020 - the commitment transaction for channel 3f00000000000000000000000000000000000000000000000000000000000000
 838                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 839                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 840                 // 0c005e - connect a block with one transaction of len 94
 841                 // 0200000001fd00000000000000000000000000000000000000000000000000000000000000000000000000000000014f00000000000000220020f60000000000000000000000000000000000000000000000000000000000000000000000 - the funding transaction
 842                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 843                 // 0c0000 - connect a block with no transactions
 844                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 845                 // 0c0000 - connect a block with no transactions
 846                 // 0c0000 - connect a block with no transactions
 847                 // 0c0000 - connect a block with no transactions
 848                 // 0c0000 - connect a block with no transactions
 849                 //
 850                 // 07 - process the now-pending HTLC forward
 851                 // - client now fails the HTLC backwards as it was unable to extract the payment preimage (CHECK 9 duplicate and CHECK 10)
 852
 853                 let logger = Arc::new(TrackingLogger { lines: Mutex::new(HashMap::new()) });
 854                 super::do_test(&::hex::decode("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 855
 856                 let log_entries = logger.lines.lock().unwrap();
 857                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendAcceptChannel event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000000 for channel ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679".to_string())), Some(&1)); // 1
 858                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendFundingSigned event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000000 for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&1)); // 2
 859                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendFundingLocked event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000000 for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&1)); // 3
 860                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendFundingLocked event in peer_handler for node 030200000000000000000000000000000000000000000000000000000000000000 for channel 3900000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&1)); // 4
 861                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendRevokeAndACK event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000000 for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&4)); // 5
 862                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling UpdateHTLCs event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000000 with 0 adds, 0 fulfills, 0 fails for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&3)); // 6
 863                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling UpdateHTLCs event in peer_handler for node 030200000000000000000000000000000000000000000000000000000000000000 with 1 adds, 0 fulfills, 0 fails for channel 3900000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&3)); // 7
 864                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling UpdateHTLCs event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000000 with 0 adds, 1 fulfills, 0 fails for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&1)); // 8
 865                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling UpdateHTLCs event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000000 with 0 adds, 0 fulfills, 1 fails for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&2)); // 9
 866                 assert_eq!(log_entries.get(&("lightning::ln::channelmonitor".to_string(), "Input spending remote commitment tx (00000000000000000000000000000000000000000000000000000000000000fd:0) in 0000000000000000000000000000000000000000000000000000000000000044 resolves outbound HTLC with payment hash ff00000000000000000000000000000000000000000000000000000000000000 with timeout".to_string())), Some(&1)); // 10
 867         }
 868 }