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