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

   1 // This file is Copyright its original authors, visible in version control
   2 // history.
   3 //
   4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
   5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
   7 // You may not use this file except in accordance with one or both of these
   8 // licenses.
   9
  10 //! Test that no series of bytes received over the wire/connections created/payments sent can
  11 //! result in a crash. We do this by standing up a node and then reading bytes from input to denote
  12 //! actions such as creating new inbound/outbound connections, bytes to be read from a connection,
  13 //! or payments to send/ways to handle events generated.
  14 //! This test has been very useful, though due to its complexity good starting inputs are critical.
  15
  16 use bitcoin::blockdata::block::BlockHeader;
  17 use bitcoin::blockdata::transaction::{Transaction, TxOut};
  18 use bitcoin::blockdata::script::{Builder, Script};
  19 use bitcoin::blockdata::opcodes;
  20 use bitcoin::consensus::encode::deserialize;
  21 use bitcoin::network::constants::Network;
  22 use bitcoin::blockdata::constants::genesis_block;
  23
  24 use bitcoin::hashes::Hash as TraitImport;
  25 use bitcoin::hashes::HashEngine as TraitImportEngine;
  26 use bitcoin::hashes::sha256::Hash as Sha256;
  27 use bitcoin::hash_types::{Txid, BlockHash, WPubkeyHash};
  28
  29 use lightning::chain;
  30 use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
  31 use lightning::chain::chainmonitor;
  32 use lightning::chain::transaction::OutPoint;
  33 use lightning::chain::keysinterface::{InMemorySigner, KeysInterface};
  34 use lightning::ln::channelmanager::{ChannelManager, PaymentHash, PaymentPreimage, PaymentSecret};
  35 use lightning::ln::peer_handler::{MessageHandler,PeerManager,SocketDescriptor};
  36 use lightning::ln::msgs::DecodeError;
  37 use lightning::routing::router::get_route;
  38 use lightning::routing::network_graph::NetGraphMsgHandler;
  39 use lightning::util::config::UserConfig;
  40 use lightning::util::events::{EventsProvider,Event};
  41 use lightning::util::enforcing_trait_impls::EnforcingSigner;
  42 use lightning::util::logger::Logger;
  43 use lightning::util::ser::Readable;
  44
  45 use utils::test_logger;
  46 use utils::test_persister::TestPersister;
  47
  48 use bitcoin::secp256k1::key::{PublicKey,SecretKey};
  49 use bitcoin::secp256k1::Secp256k1;
  50
  51 use std::cell::RefCell;
  52 use std::collections::{HashMap, hash_map};
  53 use std::cmp;
  54 use std::sync::Arc;
  55 use std::sync::atomic::{AtomicU64,AtomicUsize,Ordering};
  56
  57 #[inline]
  58 pub fn slice_to_be16(v: &[u8]) -> u16 {
  59         ((v[0] as u16) << 8*1) |
  60         ((v[1] as u16) << 8*0)
  61 }
  62
  63 #[inline]
  64 pub fn slice_to_be24(v: &[u8]) -> u32 {
  65         ((v[0] as u32) << 8*2) |
  66         ((v[1] as u32) << 8*1) |
  67         ((v[2] as u32) << 8*0)
  68 }
  69
  70 #[inline]
  71 pub fn slice_to_be32(v: &[u8]) -> u32 {
  72         ((v[0] as u32) << 8*3) |
  73         ((v[1] as u32) << 8*2) |
  74         ((v[2] as u32) << 8*1) |
  75         ((v[3] as u32) << 8*0)
  76 }
  77
  78 #[inline]
  79 pub fn be64_to_array(u: u64) -> [u8; 8] {
  80         let mut v = [0; 8];
  81         v[0] = ((u >> 8*7) & 0xff) as u8;
  82         v[1] = ((u >> 8*6) & 0xff) as u8;
  83         v[2] = ((u >> 8*5) & 0xff) as u8;
  84         v[3] = ((u >> 8*4) & 0xff) as u8;
  85         v[4] = ((u >> 8*3) & 0xff) as u8;
  86         v[5] = ((u >> 8*2) & 0xff) as u8;
  87         v[6] = ((u >> 8*1) & 0xff) as u8;
  88         v[7] = ((u >> 8*0) & 0xff) as u8;
  89         v
  90 }
  91
  92 struct InputData {
  93         data: Vec<u8>,
  94         read_pos: AtomicUsize,
  95 }
  96 impl InputData {
  97         fn get_slice(&self, len: usize) -> Option<&[u8]> {
  98                 let old_pos = self.read_pos.fetch_add(len, Ordering::AcqRel);
  99                 if self.data.len() < old_pos + len {
 100                         return None;
 101                 }
 102                 Some(&self.data[old_pos..old_pos + len])
 103         }
 104 }
 105
 106 struct FuzzEstimator {
 107         input: Arc<InputData>,
 108 }
 109 impl FeeEstimator for FuzzEstimator {
 110         fn get_est_sat_per_1000_weight(&self, _: ConfirmationTarget) -> u32 {
 111                 //TODO: We should actually be testing at least much more than 64k...
 112                 match self.input.get_slice(2) {
 113                         Some(slice) => cmp::max(slice_to_be16(slice) as u32, 253),
 114                         None => 253
 115                 }
 116         }
 117 }
 118
 119 struct TestBroadcaster {}
 120 impl BroadcasterInterface for TestBroadcaster {
 121         fn broadcast_transaction(&self, _tx: &Transaction) {}
 122 }
 123
 124 #[derive(Clone)]
 125 struct Peer<'a> {
 126         id: u8,
 127         peers_connected: &'a RefCell<[bool; 256]>,
 128 }
 129 impl<'a> SocketDescriptor for Peer<'a> {
 130         fn send_data(&mut self, data: &[u8], _resume_read: bool) -> usize {
 131                 data.len()
 132         }
 133         fn disconnect_socket(&mut self) {
 134                 assert!(self.peers_connected.borrow()[self.id as usize]);
 135                 self.peers_connected.borrow_mut()[self.id as usize] = false;
 136         }
 137 }
 138 impl<'a> PartialEq for Peer<'a> {
 139         fn eq(&self, other: &Self) -> bool {
 140                 self.id == other.id
 141         }
 142 }
 143 impl<'a> Eq for Peer<'a> {}
 144 impl<'a> std::hash::Hash for Peer<'a> {
 145         fn hash<H : std::hash::Hasher>(&self, h: &mut H) {
 146                 self.id.hash(h)
 147         }
 148 }
 149
 150 type ChannelMan = ChannelManager<
 151         EnforcingSigner,
 152         Arc<chainmonitor::ChainMonitor<EnforcingSigner, Arc<dyn chain::Filter>, Arc<TestBroadcaster>, Arc<FuzzEstimator>, Arc<dyn Logger>, Arc<TestPersister>>>,
 153         Arc<TestBroadcaster>, Arc<KeyProvider>, Arc<FuzzEstimator>, Arc<dyn Logger>>;
 154 type PeerMan<'a> = PeerManager<Peer<'a>, Arc<ChannelMan>, Arc<NetGraphMsgHandler<Arc<dyn chain::Access>, Arc<dyn Logger>>>, Arc<dyn Logger>>;
 155
 156 struct MoneyLossDetector<'a> {
 157         manager: Arc<ChannelMan>,
 158         monitor: Arc<chainmonitor::ChainMonitor<EnforcingSigner, Arc<dyn chain::Filter>, Arc<TestBroadcaster>, Arc<FuzzEstimator>, Arc<dyn Logger>, Arc<TestPersister>>>,
 159         handler: PeerMan<'a>,
 160
 161         peers: &'a RefCell<[bool; 256]>,
 162         funding_txn: Vec<Transaction>,
 163         txids_confirmed: HashMap<Txid, usize>,
 164         header_hashes: Vec<BlockHash>,
 165         height: usize,
 166         max_height: usize,
 167         blocks_connected: u32,
 168 }
 169 impl<'a> MoneyLossDetector<'a> {
 170         pub fn new(peers: &'a RefCell<[bool; 256]>,
 171                    manager: Arc<ChannelMan>,
 172                    monitor: Arc<chainmonitor::ChainMonitor<EnforcingSigner, Arc<dyn chain::Filter>, Arc<TestBroadcaster>, Arc<FuzzEstimator>, Arc<dyn Logger>, Arc<TestPersister>>>,
 173                    handler: PeerMan<'a>) -> Self {
 174                 MoneyLossDetector {
 175                         manager,
 176                         monitor,
 177                         handler,
 178
 179                         peers,
 180                         funding_txn: Vec::new(),
 181                         txids_confirmed: HashMap::new(),
 182                         header_hashes: vec![Default::default()],
 183                         height: 0,
 184                         max_height: 0,
 185                         blocks_connected: 0,
 186                 }
 187         }
 188
 189         fn connect_block(&mut self, all_txn: &[Transaction]) {
 190                 let mut txdata = Vec::with_capacity(all_txn.len());
 191                 for (idx, tx) in all_txn.iter().enumerate() {
 192                         let txid = tx.txid();
 193                         match self.txids_confirmed.entry(txid) {
 194                                 hash_map::Entry::Vacant(e) => {
 195                                         e.insert(self.height);
 196                                         txdata.push((idx + 1, tx));
 197                                 },
 198                                 _ => {},
 199                         }
 200                 }
 201
 202                 let header = BlockHeader { version: 0x20000000, prev_blockhash: self.header_hashes[self.height], merkle_root: Default::default(), time: self.blocks_connected, bits: 42, nonce: 42 };
 203                 self.height += 1;
 204                 self.blocks_connected += 1;
 205                 self.manager.block_connected(&header, &txdata, self.height as u32);
 206                 (*self.monitor).block_connected(&header, &txdata, self.height as u32);
 207                 if self.header_hashes.len() > self.height {
 208                         self.header_hashes[self.height] = header.block_hash();
 209                 } else {
 210                         assert_eq!(self.header_hashes.len(), self.height);
 211                         self.header_hashes.push(header.block_hash());
 212                 }
 213                 self.max_height = cmp::max(self.height, self.max_height);
 214         }
 215
 216         fn disconnect_block(&mut self) {
 217                 if self.height > 0 && (self.max_height < 6 || self.height >= self.max_height - 6) {
 218                         let header = BlockHeader { version: 0x20000000, prev_blockhash: self.header_hashes[self.height], merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 219                         self.manager.block_disconnected(&header);
 220                         self.monitor.block_disconnected(&header, self.height as u32);
 221                         self.height -= 1;
 222                         let removal_height = self.height;
 223                         self.txids_confirmed.retain(|_, height| {
 224                                 removal_height != *height
 225                         });
 226                 }
 227         }
 228 }
 229
 230 impl<'a> Drop for MoneyLossDetector<'a> {
 231         fn drop(&mut self) {
 232                 if !::std::thread::panicking() {
 233                         // Disconnect all peers
 234                         for (idx, peer) in self.peers.borrow().iter().enumerate() {
 235                                 if *peer {
 236                                         self.handler.socket_disconnected(&Peer{id: idx as u8, peers_connected: &self.peers});
 237                                 }
 238                         }
 239
 240                         // Force all channels onto the chain (and time out claim txn)
 241                         self.manager.force_close_all_channels();
 242                 }
 243         }
 244 }
 245
 246 struct KeyProvider {
 247         node_secret: SecretKey,
 248         counter: AtomicU64,
 249 }
 250 impl KeysInterface for KeyProvider {
 251         type Signer = EnforcingSigner;
 252
 253         fn get_node_secret(&self) -> SecretKey {
 254                 self.node_secret.clone()
 255         }
 256
 257         fn get_destination_script(&self) -> Script {
 258                 let secp_ctx = Secp256k1::signing_only();
 259                 let channel_monitor_claim_key = SecretKey::from_slice(&hex::decode("0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()[..]).unwrap();
 260                 let our_channel_monitor_claim_key_hash = WPubkeyHash::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
 261                 Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script()
 262         }
 263
 264         fn get_shutdown_pubkey(&self) -> PublicKey {
 265                 let secp_ctx = Secp256k1::signing_only();
 266                 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, 1]).unwrap())
 267         }
 268
 269         fn get_channel_signer(&self, inbound: bool, channel_value_satoshis: u64) -> EnforcingSigner {
 270                 let ctr = self.counter.fetch_add(1, Ordering::Relaxed) as u8;
 271                 let secp_ctx = Secp256k1::signing_only();
 272                 EnforcingSigner::new(if inbound {
 273                         InMemorySigner::new(
 274                                 &secp_ctx,
 275                                 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(),
 276                                 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(),
 277                                 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(),
 278                                 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(),
 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, 5, ctr]).unwrap(),
 280                                 [0, 0, 0, 0, 0, 0, 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],
 281                                 channel_value_satoshis,
 282                                 [0; 32]
 283                         )
 284                 } else {
 285                         InMemorySigner::new(
 286                                 &secp_ctx,
 287                                 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(),
 288                                 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(),
 289                                 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(),
 290                                 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(),
 291                                 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(),
 292                                 [0, 0, 0, 0, 0, 0, 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],
 293                                 channel_value_satoshis,
 294                                 [0; 32]
 295                         )
 296                 })
 297         }
 298
 299         fn get_secure_random_bytes(&self) -> [u8; 32] {
 300                 let ctr = self.counter.fetch_add(1, Ordering::Relaxed);
 301                 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
 302                 (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]
 303         }
 304
 305         fn read_chan_signer(&self, data: &[u8]) -> Result<EnforcingSigner, DecodeError> {
 306                 EnforcingSigner::read(&mut std::io::Cursor::new(data))
 307         }
 308 }
 309
 310 #[inline]
 311 pub fn do_test(data: &[u8], logger: &Arc<dyn Logger>) {
 312         let input = Arc::new(InputData {
 313                 data: data.to_vec(),
 314                 read_pos: AtomicUsize::new(0),
 315         });
 316         let fee_est = Arc::new(FuzzEstimator {
 317                 input: input.clone(),
 318         });
 319
 320         macro_rules! get_slice {
 321                 ($len: expr) => {
 322                         match input.get_slice($len as usize) {
 323                                 Some(slice) => slice,
 324                                 None => return,
 325                         }
 326                 }
 327         }
 328
 329         macro_rules! get_pubkey {
 330                 () => {
 331                         match PublicKey::from_slice(get_slice!(33)) {
 332                                 Ok(key) => key,
 333                                 Err(_) => return,
 334                         }
 335                 }
 336         }
 337
 338         let our_network_key = match SecretKey::from_slice(get_slice!(32)) {
 339                 Ok(key) => key,
 340                 Err(_) => return,
 341         };
 342
 343         let broadcast = Arc::new(TestBroadcaster{});
 344         let monitor = Arc::new(chainmonitor::ChainMonitor::new(None, broadcast.clone(), Arc::clone(&logger), fee_est.clone(), Arc::new(TestPersister{})));
 345
 346         let keys_manager = Arc::new(KeyProvider { node_secret: our_network_key.clone(), counter: AtomicU64::new(0) });
 347         let mut config = UserConfig::default();
 348         config.channel_options.fee_proportional_millionths =  slice_to_be32(get_slice!(4));
 349         config.channel_options.announced_channel = get_slice!(1)[0] != 0;
 350         config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
 351         let channelmanager = Arc::new(ChannelManager::new(Network::Bitcoin, fee_est.clone(), monitor.clone(), broadcast.clone(), Arc::clone(&logger), keys_manager.clone(), config, 0));
 352         let our_id = PublicKey::from_secret_key(&Secp256k1::signing_only(), &keys_manager.get_node_secret());
 353         let net_graph_msg_handler = Arc::new(NetGraphMsgHandler::new(genesis_block(Network::Bitcoin).header.block_hash(), None, Arc::clone(&logger)));
 354
 355         let peers = RefCell::new([false; 256]);
 356         let mut loss_detector = MoneyLossDetector::new(&peers, channelmanager.clone(), monitor.clone(), PeerManager::new(MessageHandler {
 357                 chan_handler: channelmanager.clone(),
 358                 route_handler: net_graph_msg_handler.clone(),
 359         }, 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)));
 360
 361         let mut should_forward = false;
 362         let mut payments_received: Vec<(PaymentHash, Option<PaymentSecret>, u64)> = Vec::new();
 363         let mut payments_sent = 0;
 364         let mut pending_funding_generation: Vec<([u8; 32], u64, Script)> = Vec::new();
 365         let mut pending_funding_signatures = HashMap::new();
 366         let mut pending_funding_relay = Vec::new();
 367
 368         loop {
 369                 match get_slice!(1)[0] {
 370                         0 => {
 371                                 let mut new_id = 0;
 372                                 for i in 1..256 {
 373                                         if !peers.borrow()[i-1] {
 374                                                 new_id = i;
 375                                                 break;
 376                                         }
 377                                 }
 378                                 if new_id == 0 { return; }
 379                                 loss_detector.handler.new_outbound_connection(get_pubkey!(), Peer{id: (new_id - 1) as u8, peers_connected: &peers}).unwrap();
 380                                 peers.borrow_mut()[new_id - 1] = true;
 381                         },
 382                         1 => {
 383                                 let mut new_id = 0;
 384                                 for i in 1..256 {
 385                                         if !peers.borrow()[i-1] {
 386                                                 new_id = i;
 387                                                 break;
 388                                         }
 389                                 }
 390                                 if new_id == 0 { return; }
 391                                 loss_detector.handler.new_inbound_connection(Peer{id: (new_id - 1) as u8, peers_connected: &peers}).unwrap();
 392                                 peers.borrow_mut()[new_id - 1] = true;
 393                         },
 394                         2 => {
 395                                 let peer_id = get_slice!(1)[0];
 396                                 if !peers.borrow()[peer_id as usize] { return; }
 397                                 loss_detector.handler.socket_disconnected(&Peer{id: peer_id, peers_connected: &peers});
 398                                 peers.borrow_mut()[peer_id as usize] = false;
 399                         },
 400                         3 => {
 401                                 let peer_id = get_slice!(1)[0];
 402                                 if !peers.borrow()[peer_id as usize] { return; }
 403                                 match loss_detector.handler.read_event(&mut Peer{id: peer_id, peers_connected: &peers}, get_slice!(get_slice!(1)[0])) {
 404                                         Ok(res) => assert!(!res),
 405                                         Err(_) => { peers.borrow_mut()[peer_id as usize] = false; }
 406                                 }
 407                         },
 408                         4 => {
 409                                 let value = slice_to_be24(get_slice!(3)) as u64;
 410                                 let route = match get_route(&our_id, &net_graph_msg_handler.network_graph.read().unwrap(), &get_pubkey!(), None, &Vec::new(), value, 42, Arc::clone(&logger)) {
 411                                         Ok(route) => route,
 412                                         Err(_) => return,
 413                                 };
 414                                 let mut payment_hash = PaymentHash([0; 32]);
 415                                 payment_hash.0[0..8].copy_from_slice(&be64_to_array(payments_sent));
 416                                 let mut sha = Sha256::engine();
 417                                 sha.input(&payment_hash.0[..]);
 418                                 payment_hash.0 = Sha256::from_engine(sha).into_inner();
 419                                 payments_sent += 1;
 420                                 match channelmanager.send_payment(&route, payment_hash, &None) {
 421                                         Ok(_) => {},
 422                                         Err(_) => return,
 423                                 }
 424                         },
 425                         15 => {
 426                                 let value = slice_to_be24(get_slice!(3)) as u64;
 427                                 let mut route = match get_route(&our_id, &net_graph_msg_handler.network_graph.read().unwrap(), &get_pubkey!(), None, &Vec::new(), value, 42, Arc::clone(&logger)) {
 428                                         Ok(route) => route,
 429                                         Err(_) => return,
 430                                 };
 431                                 route.paths.push(route.paths[0].clone());
 432                                 let mut payment_hash = PaymentHash([0; 32]);
 433                                 payment_hash.0[0..8].copy_from_slice(&be64_to_array(payments_sent));
 434                                 let mut sha = Sha256::engine();
 435                                 sha.input(&payment_hash.0[..]);
 436                                 payment_hash.0 = Sha256::from_engine(sha).into_inner();
 437                                 payments_sent += 1;
 438                                 let mut payment_secret = PaymentSecret([0; 32]);
 439                                 payment_secret.0[0..8].copy_from_slice(&be64_to_array(payments_sent));
 440                                 payments_sent += 1;
 441                                 match channelmanager.send_payment(&route, payment_hash, &Some(payment_secret)) {
 442                                         Ok(_) => {},
 443                                         Err(_) => return,
 444                                 }
 445                         },
 446                         5 => {
 447                                 let peer_id = get_slice!(1)[0];
 448                                 if !peers.borrow()[peer_id as usize] { return; }
 449                                 let their_key = get_pubkey!();
 450                                 let chan_value = slice_to_be24(get_slice!(3)) as u64;
 451                                 let push_msat_value = slice_to_be24(get_slice!(3)) as u64;
 452                                 if channelmanager.create_channel(their_key, chan_value, push_msat_value, 0, None).is_err() { return; }
 453                         },
 454                         6 => {
 455                                 let mut channels = channelmanager.list_channels();
 456                                 let channel_id = get_slice!(1)[0] as usize;
 457                                 if channel_id >= channels.len() { return; }
 458                                 channels.sort_by(|a, b| { a.channel_id.cmp(&b.channel_id) });
 459                                 if channelmanager.close_channel(&channels[channel_id].channel_id).is_err() { return; }
 460                         },
 461                         7 => {
 462                                 if should_forward {
 463                                         channelmanager.process_pending_htlc_forwards();
 464                                         should_forward = false;
 465                                 }
 466                         },
 467                         8 => {
 468                                 for (payment, payment_secret, amt) in payments_received.drain(..) {
 469                                         // SHA256 is defined as XOR of all input bytes placed in the first byte, and 0s
 470                                         // for the remaining bytes. Thus, if not all remaining bytes are 0s we cannot
 471                                         // fulfill this HTLC, but if they are, we can just take the first byte and
 472                                         // place that anywhere in our preimage.
 473                                         if &payment.0[1..] != &[0; 31] {
 474                                                 channelmanager.fail_htlc_backwards(&payment, &payment_secret);
 475                                         } else {
 476                                                 let mut payment_preimage = PaymentPreimage([0; 32]);
 477                                                 payment_preimage.0[0] = payment.0[0];
 478                                                 channelmanager.claim_funds(payment_preimage, &payment_secret, amt);
 479                                         }
 480                                 }
 481                         },
 482                         9 => {
 483                                 for (payment, payment_secret, _) in payments_received.drain(..) {
 484                                         channelmanager.fail_htlc_backwards(&payment, &payment_secret);
 485                                 }
 486                         },
 487                         10 => {
 488                                 'outer_loop: for funding_generation in pending_funding_generation.drain(..) {
 489                                         let mut tx = Transaction { version: 0, lock_time: 0, input: Vec::new(), output: vec![TxOut {
 490                                                         value: funding_generation.1, script_pubkey: funding_generation.2,
 491                                                 }] };
 492                                         let funding_output = 'search_loop: loop {
 493                                                 let funding_txid = tx.txid();
 494                                                 if let None = loss_detector.txids_confirmed.get(&funding_txid) {
 495                                                         let outpoint = OutPoint { txid: funding_txid, index: 0 };
 496                                                         for chan in channelmanager.list_channels() {
 497                                                                 if chan.channel_id == outpoint.to_channel_id() {
 498                                                                         tx.version += 1;
 499                                                                         continue 'search_loop;
 500                                                                 }
 501                                                         }
 502                                                         break outpoint;
 503                                                 }
 504                                                 tx.version += 1;
 505                                                 if tx.version > 0xff {
 506                                                         continue 'outer_loop;
 507                                                 }
 508                                         };
 509                                         channelmanager.funding_transaction_generated(&funding_generation.0, funding_output.clone());
 510                                         pending_funding_signatures.insert(funding_output, tx);
 511                                 }
 512                         },
 513                         11 => {
 514                                 if !pending_funding_relay.is_empty() {
 515                                         loss_detector.connect_block(&pending_funding_relay[..]);
 516                                         for _ in 2..100 {
 517                                                 loss_detector.connect_block(&[]);
 518                                         }
 519                                 }
 520                                 for tx in pending_funding_relay.drain(..) {
 521                                         loss_detector.funding_txn.push(tx);
 522                                 }
 523                         },
 524                         12 => {
 525                                 let txlen = slice_to_be16(get_slice!(2));
 526                                 if txlen == 0 {
 527                                         loss_detector.connect_block(&[]);
 528                                 } else {
 529                                         let txres: Result<Transaction, _> = deserialize(get_slice!(txlen));
 530                                         if let Ok(tx) = txres {
 531                                                 let mut output_val = 0;
 532                                                 for out in tx.output.iter() {
 533                                                         if out.value > 21_000_000_0000_0000 { return; }
 534                                                         output_val += out.value;
 535                                                         if output_val > 21_000_000_0000_0000 { return; }
 536                                                 }
 537                                                 loss_detector.connect_block(&[tx]);
 538                                         } else {
 539                                                 return;
 540                                         }
 541                                 }
 542                         },
 543                         13 => {
 544                                 loss_detector.disconnect_block();
 545                         },
 546                         14 => {
 547                                 let mut channels = channelmanager.list_channels();
 548                                 let channel_id = get_slice!(1)[0] as usize;
 549                                 if channel_id >= channels.len() { return; }
 550                                 channels.sort_by(|a, b| { a.channel_id.cmp(&b.channel_id) });
 551                                 channelmanager.force_close_channel(&channels[channel_id].channel_id).unwrap();
 552                         },
 553                         // 15 is above
 554                         _ => return,
 555                 }
 556                 loss_detector.handler.process_events();
 557                 for event in loss_detector.manager.get_and_clear_pending_events() {
 558                         match event {
 559                                 Event::FundingGenerationReady { temporary_channel_id, channel_value_satoshis, output_script, .. } => {
 560                                         pending_funding_generation.push((temporary_channel_id, channel_value_satoshis, output_script));
 561                                 },
 562                                 Event::FundingBroadcastSafe { funding_txo, .. } => {
 563                                         pending_funding_relay.push(pending_funding_signatures.remove(&funding_txo).unwrap());
 564                                 },
 565                                 Event::PaymentReceived { payment_hash, payment_secret, amt } => {
 566                                         //TODO: enhance by fetching random amounts from fuzz input?
 567                                         payments_received.push((payment_hash, payment_secret, amt));
 568                                 },
 569                                 Event::PaymentSent {..} => {},
 570                                 Event::PaymentFailed {..} => {},
 571                                 Event::PendingHTLCsForwardable {..} => {
 572                                         should_forward = true;
 573                                 },
 574                                 Event::SpendableOutputs {..} => {},
 575                         }
 576                 }
 577         }
 578 }
 579
 580 pub fn full_stack_test<Out: test_logger::Output>(data: &[u8], out: Out) {
 581         let logger: Arc<dyn Logger> = Arc::new(test_logger::TestLogger::new("".to_owned(), out));
 582         do_test(data, &logger);
 583 }
 584
 585 #[no_mangle]
 586 pub extern "C" fn full_stack_run(data: *const u8, datalen: usize) {
 587         let logger: Arc<dyn Logger> = Arc::new(test_logger::TestLogger::new("".to_owned(), test_logger::DevNull {}));
 588         do_test(unsafe { std::slice::from_raw_parts(data, datalen) }, &logger);
 589 }
 590
 591 #[cfg(test)]
 592 mod tests {
 593         use lightning::util::logger::{Logger, Record};
 594         use std::collections::HashMap;
 595         use std::sync::{Arc, Mutex};
 596
 597         struct TrackingLogger {
 598                 /// (module, message) -> count
 599                 pub lines: Mutex<HashMap<(String, String), usize>>,
 600         }
 601         impl Logger for TrackingLogger {
 602                 fn log(&self, record: &Record) {
 603                         *self.lines.lock().unwrap().entry((record.module_path.to_string(), format!("{}", record.args))).or_insert(0) += 1;
 604                         println!("{:<5} [{} : {}, {}] {}", record.level.to_string(), record.module_path, record.file, record.line, record.args);
 605                 }
 606         }
 607
 608         #[test]
 609         fn test_no_existing_test_breakage() {
 610                 // To avoid accidentally causing all existing fuzz test cases to be useless by making minor
 611                 // changes (such as requesting feerate info in a new place), we run a pretty full
 612                 // step-through with two peers and HTLC forwarding here. Obviously this is pretty finicky,
 613                 // so this should be updated pretty liberally, but at least we'll know when changes occur.
 614                 // If nothing else, this test serves as a pretty great initial full_stack_target seed.
 615
 616                 // What each byte represents is broken down below, and then everything is concatenated into
 617                 // one large test at the end (you want %s/ -.*//g %s/\n\| \|\t\|\///g).
 618
 619                 // Following BOLT 8, lightning message on the wire are: 2-byte encrypted message length +
 620                 // 16-byte MAC of the encrypted message length + encrypted Lightning message + 16-byte MAC
 621                 // of the Lightning message
 622                 // I.e 2nd inbound read, len 18 : 0006 (encrypted message length) + 03000000000000000000000000000000 (MAC of the encrypted message length)
 623                 // Len 22 : 0010 00000000 (encrypted lightning message) + 03000000000000000000000000000000 (MAC of the Lightning message)
 624
 625                 // Writing new code generating transactions and see a new failure ? Don't forget to add input for the FuzzEstimator !
 626
 627                 // 0100000000000000000000000000000000000000000000000000000000000000 - our network key
 628                 // 00000000 - fee_proportional_millionths
 629                 // 01 - announce_channels_publicly
 630                 //
 631                 // 00 - new outbound connection with id 0
 632                 // 030000000000000000000000000000000000000000000000000000000000000002 - peer's pubkey
 633                 // 030032 - inbound read from peer id 0 of len 50
 634                 // 00 030000000000000000000000000000000000000000000000000000000000000002 03000000000000000000000000000000 - noise act two (0||pubkey||mac)
 635                 //
 636                 // 030012 - inbound read from peer id 0 of len 18
 637                 // 000a 03000000000000000000000000000000 - message header indicating message length 10
 638                 // 03001a - inbound read from peer id 0 of len 26
 639                 // 0010 00022000 00022000 03000000000000000000000000000000 - init message (type 16) with static_remotekey (0x2000) and mac
 640                 //
 641                 // 030012 - inbound read from peer id 0 of len 18
 642                 // 0141 03000000000000000000000000000000 - message header indicating message length 321
 643                 // 0300fe - inbound read from peer id 0 of len 254
 644                 // 0020 7500000000000000000000000000000000000000000000000000000000000000 ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679 000000000000c350 0000000000000000 0000000000000222 ffffffffffffffff 0000000000000222 0000000000000000 000000fd 0006 01e3 030000000000000000000000000000000000000000000000000000000000000001 030000000000000000000000000000000000000000000000000000000000000002 030000000000000000000000000000000000000000000000000000000000000003 030000000000000000000000000000000000000000000000000000000000000004 - beginning of open_channel message
 645                 // 030053 - inbound read from peer id 0 of len 83
 646                 // 030000000000000000000000000000000000000000000000000000000000000005 020900000000000000000000000000000000000000000000000000000000000000 01 03000000000000000000000000000000 - rest of open_channel and mac
 647                 //
 648                 // 00fd00fd00fd - Three feerate requests (all returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 649                 // - client should now respond with accept_channel (CHECK 1: type 33 to peer 03000000)
 650                 //
 651                 // 030012 - inbound read from peer id 0 of len 18
 652                 // 0084 03000000000000000000000000000000 - message header indicating message length 132
 653                 // 030094 - inbound read from peer id 0 of len 148
 654                 // 0022 ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679 3d00000000000000000000000000000000000000000000000000000000000000 0000 00000000000000000000000000000000000000000000000000000000000000210100000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - funding_created and mac
 655                 // - client should now respond with funding_signed (CHECK 2: type 35 to peer 03000000)
 656                 //
 657                 // 0c005e - connect a block with one transaction of len 94
 658                 // 020000000100000000000000000000000000000000000000000000000000000000000000000000000000ffffffff0150c3000000000000220020ae0000000000000000000000000000000000000000000000000000000000000000000000 - the funding transaction
 659                 // 0c0000 - connect a block with no transactions
 660                 // 0c0000 - connect a block with no transactions
 661                 // 0c0000 - connect a block with no transactions
 662                 // 0c0000 - connect a block with no transactions
 663                 // 0c0000 - connect a block with no transactions
 664                 // 0c0000 - connect a block with no transactions
 665                 // 0c0000 - connect a block with no transactions
 666                 // 0c0000 - connect a block with no transactions
 667                 // 0c0000 - connect a block with no transactions
 668                 // 0c0000 - connect a block with no transactions
 669                 // 0c0000 - connect a block with no transactions
 670                 // 0c0000 - connect a block with no transactions
 671                 // - by now client should have sent a funding_locked (CHECK 3: SendFundingLocked to 03000000 for chan 3d000000)
 672                 //
 673                 // 030012 - inbound read from peer id 0 of len 18
 674                 // 0043 03000000000000000000000000000000 - message header indicating message length 67
 675                 // 030053 - inbound read from peer id 0 of len 83
 676                 // 0024 3d00000000000000000000000000000000000000000000000000000000000000 020800000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - funding_locked and mac
 677                 //
 678                 // 01 - new inbound connection with id 1
 679                 // 030132 - inbound read from peer id 1 of len 50
 680                 // 0003000000000000000000000000000000000000000000000000000000000000000703000000000000000000000000000000 - inbound noise act 1
 681                 // 030142 - inbound read from peer id 1 of len 66
 682                 // 000302000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000003000000000000000000000000000000 - inbound noise act 3
 683                 //
 684                 // 030112 - inbound read from peer id 1 of len 18
 685                 // 000a 01000000000000000000000000000000 - message header indicating message length 10
 686                 // 03011a - inbound read from peer id 1 of len 26
 687                 // 0010 00022000 00022000 01000000000000000000000000000000 - init message (type 16) with static_remotekey (0x2000) and mac
 688                 //
 689                 // 05 01 030200000000000000000000000000000000000000000000000000000000000000 00c350 0003e8 - create outbound channel to peer 1 for 50k sat
 690                 // 00fd00fd - Two feerate requests (all returning min feerate) (gonna be ingested by FuzzEstimator)
 691                 //
 692                 // 030112 - inbound read from peer id 1 of len 18
 693                 // 0110 01000000000000000000000000000000 - message header indicating message length 272
 694                 // 0301ff - inbound read from peer id 1 of len 255
 695                 // 0021 0000000000000000000000000000000000000000000000000000000000000e05 000000000000001a 00000000004c4b40 00000000000003e8 00000000000003e8 00000002 03f0 0005 030000000000000000000000000000000000000000000000000000000000000100 030000000000000000000000000000000000000000000000000000000000000200 030000000000000000000000000000000000000000000000000000000000000300 030000000000000000000000000000000000000000000000000000000000000400 030000000000000000000000000000000000000000000000000000000000000500 02660000000000000000000000000000 - beginning of accept_channel
 696                 // 030121 - inbound read from peer id 1 of len 33
 697                 // 0000000000000000000000000000000000 01000000000000000000000000000000 - rest of accept_channel and mac
 698                 //
 699                 // 0a - create the funding transaction (client should send funding_created now)
 700                 //
 701                 // 030112 - inbound read from peer id 1 of len 18
 702                 // 0062 01000000000000000000000000000000 - message header indicating message length 98
 703                 // 030172 - inbound read from peer id 1 of len 114
 704                 // 0023 3a00000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000007c0001000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - funding_signed message and mac
 705                 //
 706                 // 0b - broadcast funding transaction
 707                 // - by now client should have sent a funding_locked (CHECK 4: SendFundingLocked to 03020000 for chan 3f000000)
 708                 //
 709                 // 030112 - inbound read from peer id 1 of len 18
 710                 // 0043 01000000000000000000000000000000 - message header indicating message length 67
 711                 // 030153 - inbound read from peer id 1 of len 83
 712                 // 0024 3a00000000000000000000000000000000000000000000000000000000000000 026700000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - funding_locked and mac
 713                 //
 714                 // 030012 - inbound read from peer id 0 of len 18
 715                 // 05ac 03000000000000000000000000000000 - message header indicating message length 1452
 716                 // 0300ff - inbound read from peer id 0 of len 255
 717                 // 0080 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000000 0000000000003e80 ff00000000000000000000000000000000000000000000000000000000000000 00000121 00 030000000000000000000000000000000000000000000000000000000000000555 0000000e000001000000000000000003e80000007b0000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff - beginning of update_add_htlc from 0 to 1 via client
 718                 // 0300ff - inbound read from peer id 0 of len 255
 719                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 720                 // 0300ff - inbound read from peer id 0 of len 255
 721                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 722                 // 0300ff - inbound read from peer id 0 of len 255
 723                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 724                 // 0300ff - inbound read from peer id 0 of len 255
 725                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 726                 // 0300c1 - inbound read from peer id 0 of len 193
 727                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 9500000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - end of update_add_htlc from 0 to 1 via client and mac
 728                 //
 729                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 730                 //
 731                 // 030012 - inbound read from peer id 0 of len 18
 732                 // 0064 03000000000000000000000000000000 - message header indicating message length 100
 733                 // 030074 - inbound read from peer id 0 of len 116
 734                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000300100000000000000000000000000000000000000000000000000000000000000 0000 03000000000000000000000000000000 - commitment_signed and mac
 735                 // - client should now respond with revoke_and_ack and commitment_signed (CHECK 5/6: types 133 and 132 to peer 03000000)
 736                 //
 737                 // 030012 - inbound read from peer id 0 of len 18
 738                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 739                 // 030073 - inbound read from peer id 0 of len 115
 740                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0900000000000000000000000000000000000000000000000000000000000000 020b00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 741                 //
 742                 // 07 - process the now-pending HTLC forward
 743                 // - client now sends id 1 update_add_htlc and commitment_signed (CHECK 7: SendHTLCs event for node 03020000 with 1 HTLCs for channel 3f000000)
 744                 //
 745                 // - we respond with commitment_signed then revoke_and_ack (a weird, but valid, order)
 746                 // 030112 - inbound read from peer id 1 of len 18
 747                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 748                 // 030174 - inbound read from peer id 1 of len 116
 749                 // 0084 3a00000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000006a0001000000000000000000000000000000000000000000000000000000000000 0000 01000000000000000000000000000000 - commitment_signed and mac
 750                 //
 751                 // 030112 - inbound read from peer id 1 of len 18
 752                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 753                 // 030173 - inbound read from peer id 1 of len 115
 754                 // 0085 3a00000000000000000000000000000000000000000000000000000000000000 6600000000000000000000000000000000000000000000000000000000000000 026400000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 755                 //
 756                 // 030112 - inbound read from peer id 1 of len 18
 757                 // 004a 01000000000000000000000000000000 - message header indicating message length 74
 758                 // 03015a - inbound read from peer id 1 of len 90
 759                 // 0082 3a00000000000000000000000000000000000000000000000000000000000000 0000000000000000 ff00888888888888888888888888888888888888888888888888888888888888 01000000000000000000000000000000 - update_fulfill_htlc and mac
 760                 // - client should immediately claim the pending HTLC from peer 0 (CHECK 8: SendFulfillHTLCs for node 03000000 with preimage ff00888888 for channel 3d000000)
 761                 //
 762                 // 030112 - inbound read from peer id 1 of len 18
 763                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 764                 // 030174 - inbound read from peer id 1 of len 116
 765                 // 0084 3a00000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000100001000000000000000000000000000000000000000000000000000000000000 0000 01000000000000000000000000000000 - commitment_signed and mac
 766                 //
 767                 // 030112 - inbound read from peer id 1 of len 18
 768                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 769                 // 030173 - inbound read from peer id 1 of len 115
 770                 // 0085 3a00000000000000000000000000000000000000000000000000000000000000 6700000000000000000000000000000000000000000000000000000000000000 026500000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 771                 //
 772                 // - before responding to the commitment_signed generated above, send a new HTLC
 773                 // 030012 - inbound read from peer id 0 of len 18
 774                 // 05ac 03000000000000000000000000000000 - message header indicating message length 1452
 775                 // 0300ff - inbound read from peer id 0 of len 255
 776                 // 0080 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000001 0000000000003e80 ff00000000000000000000000000000000000000000000000000000000000000 00000121 00 030000000000000000000000000000000000000000000000000000000000000555 0000000e000001000000000000000003e80000007b0000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff - beginning of update_add_htlc from 0 to 1 via client
 777                 // 0300ff - inbound read from peer id 0 of len 255
 778                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 779                 // 0300ff - inbound read from peer id 0 of len 255
 780                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 781                 // 0300ff - inbound read from peer id 0 of len 255
 782                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 783                 // 0300ff - inbound read from peer id 0 of len 255
 784                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 785                 // 0300c1 - inbound read from peer id 0 of len 193
 786                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 9500000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - end of update_add_htlc from 0 to 1 via client and mac
 787                 //
 788                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 789                 //
 790                 // - now respond to the update_fulfill_htlc+commitment_signed messages the client sent to peer 0
 791                 // 030012 - inbound read from peer id 0 of len 18
 792                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 793                 // 030073 - inbound read from peer id 0 of len 115
 794                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0800000000000000000000000000000000000000000000000000000000000000 020a00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 795                 // - client should now respond with revoke_and_ack and commitment_signed (CHECK 5/6 duplicates)
 796                 //
 797                 // 030012 - inbound read from peer id 0 of len 18
 798                 // 0064 03000000000000000000000000000000 - message header indicating message length 100
 799                 // 030074 - inbound read from peer id 0 of len 116
 800                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000c30100000000000000000000000000000000000000000000000000000000000000 0000 03000000000000000000000000000000 - commitment_signed and mac
 801                 //
 802                 // 030012 - inbound read from peer id 0 of len 18
 803                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 804                 // 030073 - inbound read from peer id 0 of len 115
 805                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0b00000000000000000000000000000000000000000000000000000000000000 020d00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 806                 //
 807                 // 07 - process the now-pending HTLC forward
 808                 // - client now sends id 1 update_add_htlc and commitment_signed (CHECK 7 duplicate)
 809                 // - we respond with revoke_and_ack, then commitment_signed, then update_fail_htlc
 810                 //
 811                 // 030112 - inbound read from peer id 1 of len 18
 812                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 813                 // 030174 - inbound read from peer id 1 of len 116
 814                 // 0084 3a00000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000390001000000000000000000000000000000000000000000000000000000000000 0000 01000000000000000000000000000000 - commitment_signed and mac
 815                 //
 816                 // 030112 - inbound read from peer id 1 of len 18
 817                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 818                 // 030173 - inbound read from peer id 1 of len 115
 819                 // 0085 3a00000000000000000000000000000000000000000000000000000000000000 6400000000000000000000000000000000000000000000000000000000000000 027000000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 820                 //
 821                 // 030112 - inbound read from peer id 1 of len 18
 822                 // 002c 01000000000000000000000000000000 - message header indicating message length 44
 823                 // 03013c - inbound read from peer id 1 of len 60
 824                 // 0083 3a00000000000000000000000000000000000000000000000000000000000000 0000000000000001 0000 01000000000000000000000000000000 - update_fail_htlc and mac
 825                 //
 826                 // 030112 - inbound read from peer id 1 of len 18
 827                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 828                 // 030174 - inbound read from peer id 1 of len 116
 829                 // 0084 3a00000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000390001000000000000000000000000000000000000000000000000000000000000 0000 01000000000000000000000000000000 - commitment_signed and mac
 830                 //
 831                 // 030112 - inbound read from peer id 1 of len 18
 832                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 833                 // 030173 - inbound read from peer id 1 of len 115
 834                 // 0085 3a00000000000000000000000000000000000000000000000000000000000000 6500000000000000000000000000000000000000000000000000000000000000 027100000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 835                 //
 836                 // 07 - process the now-pending HTLC forward
 837                 // - client now sends id 0 update_fail_htlc and commitment_signed (CHECK 9)
 838                 // - now respond to the update_fail_htlc+commitment_signed messages the client sent to peer 0
 839                 //
 840                 // 030012 - inbound read from peer id 0 of len 18
 841                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 842                 // 030073 - inbound read from peer id 0 of len 115
 843                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0a00000000000000000000000000000000000000000000000000000000000000 020c00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 844                 //
 845                 // 030012 - inbound read from peer id 0 of len 18
 846                 // 0064 03000000000000000000000000000000 - message header indicating message length 100
 847                 // 030074 - inbound read from peer id 0 of len 116
 848                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000320100000000000000000000000000000000000000000000000000000000000000 0000 03000000000000000000000000000000 - commitment_signed and mac
 849                 // - client should now respond with revoke_and_ack (CHECK 5 duplicate)
 850                 //
 851                 // 030012 - inbound read from peer id 0 of len 18
 852                 // 05ac 03000000000000000000000000000000 - message header indicating message length 1452
 853                 // 0300ff - inbound read from peer id 0 of len 255
 854                 // 0080 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000002 00000000000b0838 ff00000000000000000000000000000000000000000000000000000000000000 00000121 00 030000000000000000000000000000000000000000000000000000000000000555 0000000e0000010000000000000003e8000000007b0000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff - beginning of update_add_htlc from 0 to 1 via client
 855                 // 0300ff - inbound read from peer id 0 of len 255
 856                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 857                 // 0300ff - inbound read from peer id 0 of len 255
 858                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 859                 // 0300ff - inbound read from peer id 0 of len 255
 860                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 861                 // 0300ff - inbound read from peer id 0 of len 255
 862                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 863                 // 0300c1 - inbound read from peer id 0 of len 193
 864                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 9500000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - end of update_add_htlc from 0 to 1 via client and mac
 865                 //
 866                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 867                 //
 868                 // 030012 - inbound read from peer id 0 of len 18
 869                 // 00a4 03000000000000000000000000000000 - message header indicating message length 164
 870                 // 0300b4 - inbound read from peer id 0 of len 180
 871                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000a60100000000000000000000000000000000000000000000000000000000000000 0001 00000000000000000000000000000000000000000000000000000000000000b40500000000000000000000000000000000000000000000000000000000000006 03000000000000000000000000000000 - commitment_signed and mac
 872                 // - client should now respond with revoke_and_ack and commitment_signed (CHECK 5/6 duplicates)
 873                 //
 874                 // 030012 - inbound read from peer id 0 of len 18
 875                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 876                 // 030073 - inbound read from peer id 0 of len 115
 877                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0d00000000000000000000000000000000000000000000000000000000000000 020f00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 878                 //
 879                 // 07 - process the now-pending HTLC forward
 880                 // - client now sends id 1 update_add_htlc and commitment_signed (CHECK 7 duplicate)
 881                 //
 882                 // 0c007d - connect a block with one transaction of len 125
 883                 // 02000000013a0000000000000000000000000000000000000000000000000000000000000000000000000000008002000100000000000022002093000000000000000000000000000000000000000000000000000000000000006cc1000000000000160014280000000000000000000000000000000000000005000020 - the commitment transaction for channel 3f00000000000000000000000000000000000000000000000000000000000000
 884                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 885                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 886                 // 0c005e - connect a block with one transaction of len 94
 887                 // 02000000018900000000000000000000000000000000000000000000000000000000000000000000000000000000014f00000000000000220020b20000000000000000000000000000000000000000000000000000000000000000000000 - the HTLC timeout transaction
 888                 // 0c0000 - connect a block with no transactions
 889                 // 0c0000 - connect a block with no transactions
 890                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 891                 // 0c0000 - connect a block with no transactions
 892                 // 0c0000 - connect a block with no transactions
 893                 // 0c0000 - connect a block with no transactions
 894                 //
 895                 // 07 - process the now-pending HTLC forward
 896                 // - client now fails the HTLC backwards as it was unable to extract the payment preimage (CHECK 9 duplicate and CHECK 10)
 897
 898                 let logger = Arc::new(TrackingLogger { lines: Mutex::new(HashMap::new()) });
 899                 super::do_test(&::hex::decode("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 900
 901                 let log_entries = logger.lines.lock().unwrap();
 902                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendAcceptChannel event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000002 for channel ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679".to_string())), Some(&1)); // 1
 903                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendFundingSigned event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000002 for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&1)); // 2
 904                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendFundingLocked event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000002 for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&1)); // 3
 905                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendFundingLocked event in peer_handler for node 030200000000000000000000000000000000000000000000000000000000000000 for channel 3a00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&1)); // 4
 906                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendRevokeAndACK event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000002 for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&4)); // 5
 907                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling UpdateHTLCs event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000002 with 0 adds, 0 fulfills, 0 fails for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&3)); // 6
 908                 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 3a00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&3)); // 7
 909                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling UpdateHTLCs event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000002 with 0 adds, 1 fulfills, 0 fails for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&1)); // 8
 910                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling UpdateHTLCs event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000002 with 0 adds, 0 fulfills, 1 fails for channel 3d00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&2)); // 9
 911                 assert_eq!(log_entries.get(&("lightning::chain::channelmonitor".to_string(), "Input spending counterparty commitment tx (0000000000000000000000000000000000000000000000000000000000000089:0) in 0000000000000000000000000000000000000000000000000000000000000074 resolves outbound HTLC with payment hash ff00000000000000000000000000000000000000000000000000000000000000 with timeout".to_string())), Some(&1)); // 10
 912         }
 913 }