_ Git - rust-lightning/blob - fuzz/fuzz_targets/full_stack_target.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 //Uncomment this for libfuzzer builds:
   8 //#![no_main]
   9
  10 extern crate bitcoin;
  11 extern crate bitcoin_hashes;
  12 extern crate lightning;
  13 extern crate secp256k1;
  14
  15 use bitcoin::blockdata::block::BlockHeader;
  16 use bitcoin::blockdata::transaction::{Transaction, TxOut};
  17 use bitcoin::blockdata::script::{Builder, Script};
  18 use bitcoin::blockdata::opcodes;
  19 use bitcoin::consensus::encode::deserialize;
  20 use bitcoin::network::constants::Network;
  21 use bitcoin::util::hash::BitcoinHash;
  22
  23 use bitcoin_hashes::Hash as TraitImport;
  24 use bitcoin_hashes::HashEngine as TraitImportEngine;
  25 use bitcoin_hashes::sha256::Hash as Sha256;
  26 use bitcoin_hashes::hash160::Hash as Hash160;
  27 use bitcoin_hashes::sha256d::Hash as Sha256dHash;
  28
  29 use lightning::chain::chaininterface::{BroadcasterInterface,ConfirmationTarget,ChainListener,FeeEstimator,ChainWatchInterfaceUtil};
  30 use lightning::chain::transaction::OutPoint;
  31 use lightning::chain::keysinterface::{ChannelKeys, KeysInterface};
  32 use lightning::ln::channelmonitor;
  33 use lightning::ln::channelmanager::{ChannelManager, PaymentHash, PaymentPreimage};
  34 use lightning::ln::peer_handler::{MessageHandler,PeerManager,SocketDescriptor};
  35 use lightning::ln::router::Router;
  36 use lightning::util::events::{EventsProvider,Event};
  37 use lightning::util::{reset_rng_state, fill_bytes};
  38 use lightning::util::logger::Logger;
  39 use lightning::util::config::UserConfig;
  40
  41 mod utils;
  42
  43 use utils::test_logger;
  44
  45 use secp256k1::key::{PublicKey,SecretKey};
  46 use secp256k1::Secp256k1;
  47
  48 use std::cell::RefCell;
  49 use std::collections::{HashMap, hash_map};
  50 use std::cmp;
  51 use std::hash::Hash;
  52 use std::sync::Arc;
  53 use std::sync::atomic::{AtomicUsize,Ordering};
  54
  55 #[inline]
  56 pub fn slice_to_be16(v: &[u8]) -> u16 {
  57         ((v[0] as u16) << 8*1) |
  58         ((v[1] as u16) << 8*0)
  59 }
  60
  61 #[inline]
  62 pub fn slice_to_be24(v: &[u8]) -> u32 {
  63         ((v[0] as u32) << 8*2) |
  64         ((v[1] as u32) << 8*1) |
  65         ((v[2] as u32) << 8*0)
  66 }
  67
  68 #[inline]
  69 pub fn slice_to_be32(v: &[u8]) -> u32 {
  70         ((v[0] as u32) << 8*3) |
  71         ((v[1] as u32) << 8*2) |
  72         ((v[2] as u32) << 8*1) |
  73         ((v[3] as u32) << 8*0)
  74 }
  75
  76 #[inline]
  77 pub fn be64_to_array(u: u64) -> [u8; 8] {
  78         let mut v = [0; 8];
  79         v[0] = ((u >> 8*7) & 0xff) as u8;
  80         v[1] = ((u >> 8*6) & 0xff) as u8;
  81         v[2] = ((u >> 8*5) & 0xff) as u8;
  82         v[3] = ((u >> 8*4) & 0xff) as u8;
  83         v[4] = ((u >> 8*3) & 0xff) as u8;
  84         v[5] = ((u >> 8*2) & 0xff) as u8;
  85         v[6] = ((u >> 8*1) & 0xff) as u8;
  86         v[7] = ((u >> 8*0) & 0xff) as u8;
  87         v
  88 }
  89
  90 struct InputData {
  91         data: Vec<u8>,
  92         read_pos: AtomicUsize,
  93 }
  94 impl InputData {
  95         fn get_slice(&self, len: usize) -> Option<&[u8]> {
  96                 let old_pos = self.read_pos.fetch_add(len, Ordering::AcqRel);
  97                 if self.data.len() < old_pos + len {
  98                         return None;
  99                 }
 100                 Some(&self.data[old_pos..old_pos + len])
 101         }
 102 }
 103
 104 struct FuzzEstimator {
 105         input: Arc<InputData>,
 106 }
 107 impl FeeEstimator for FuzzEstimator {
 108         fn get_est_sat_per_1000_weight(&self, _: ConfirmationTarget) -> u64 {
 109                 //TODO: We should actually be testing at least much more than 64k...
 110                 match self.input.get_slice(2) {
 111                         Some(slice) => cmp::max(slice_to_be16(slice) as u64, 253),
 112                         None => 0
 113                 }
 114         }
 115 }
 116
 117 struct TestBroadcaster {}
 118 impl BroadcasterInterface for TestBroadcaster {
 119         fn broadcast_transaction(&self, _tx: &Transaction) {}
 120 }
 121
 122 #[derive(Clone)]
 123 struct Peer<'a> {
 124         id: u8,
 125         peers_connected: &'a RefCell<[bool; 256]>,
 126 }
 127 impl<'a> SocketDescriptor for Peer<'a> {
 128         fn send_data(&mut self, data: &Vec<u8>, write_offset: usize, _resume_read: bool) -> usize {
 129                 assert!(write_offset < data.len());
 130                 data.len() - write_offset
 131         }
 132         fn disconnect_socket(&mut self) {
 133                 assert!(self.peers_connected.borrow()[self.id as usize]);
 134                 self.peers_connected.borrow_mut()[self.id as usize] = false;
 135         }
 136 }
 137 impl<'a> PartialEq for Peer<'a> {
 138         fn eq(&self, other: &Self) -> bool {
 139                 self.id == other.id
 140         }
 141 }
 142 impl<'a> Eq for Peer<'a> {}
 143 impl<'a> Hash for Peer<'a> {
 144         fn hash<H : std::hash::Hasher>(&self, h: &mut H) {
 145                 self.id.hash(h)
 146         }
 147 }
 148
 149 struct MoneyLossDetector<'a> {
 150         manager: Arc<ChannelManager>,
 151         monitor: Arc<channelmonitor::SimpleManyChannelMonitor<OutPoint>>,
 152         handler: PeerManager<Peer<'a>>,
 153
 154         peers: &'a RefCell<[bool; 256]>,
 155         funding_txn: Vec<Transaction>,
 156         txids_confirmed: HashMap<Sha256dHash, usize>,
 157         header_hashes: Vec<Sha256dHash>,
 158         height: usize,
 159         max_height: usize,
 160         blocks_connected: u32,
 161 }
 162 impl<'a> MoneyLossDetector<'a> {
 163         pub fn new(peers: &'a RefCell<[bool; 256]>, manager: Arc<ChannelManager>, monitor: Arc<channelmonitor::SimpleManyChannelMonitor<OutPoint>>, handler: PeerManager<Peer<'a>>) -> Self {
 164                 MoneyLossDetector {
 165                         manager,
 166                         monitor,
 167                         handler,
 168
 169                         peers,
 170                         funding_txn: Vec::new(),
 171                         txids_confirmed: HashMap::new(),
 172                         header_hashes: vec![Default::default()],
 173                         height: 0,
 174                         max_height: 0,
 175                         blocks_connected: 0,
 176                 }
 177         }
 178
 179         fn connect_block(&mut self, all_txn: &[Transaction]) {
 180                 let mut txn = Vec::with_capacity(all_txn.len());
 181                 let mut txn_idxs = Vec::with_capacity(all_txn.len());
 182                 for (idx, tx) in all_txn.iter().enumerate() {
 183                         let txid = tx.txid();
 184                         match self.txids_confirmed.entry(txid) {
 185                                 hash_map::Entry::Vacant(e) => {
 186                                         e.insert(self.height);
 187                                         txn.push(tx);
 188                                         txn_idxs.push(idx as u32 + 1);
 189                                 },
 190                                 _ => {},
 191                         }
 192                 }
 193
 194                 let header = BlockHeader { version: 0x20000000, prev_blockhash: self.header_hashes[self.height], merkle_root: Default::default(), time: self.blocks_connected, bits: 42, nonce: 42 };
 195                 self.height += 1;
 196                 self.blocks_connected += 1;
 197                 self.manager.block_connected(&header, self.height as u32, &txn[..], &txn_idxs[..]);
 198                 (*self.monitor).block_connected(&header, self.height as u32, &txn[..], &txn_idxs[..]);
 199                 if self.header_hashes.len() > self.height {
 200                         self.header_hashes[self.height] = header.bitcoin_hash();
 201                 } else {
 202                         assert_eq!(self.header_hashes.len(), self.height);
 203                         self.header_hashes.push(header.bitcoin_hash());
 204                 }
 205                 self.max_height = cmp::max(self.height, self.max_height);
 206         }
 207
 208         fn disconnect_block(&mut self) {
 209                 if self.height > 0 && (self.max_height < 6 || self.height >= self.max_height - 6) {
 210                         self.height -= 1;
 211                         let header = BlockHeader { version: 0x20000000, prev_blockhash: self.header_hashes[self.height], merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 212                         self.manager.block_disconnected(&header);
 213                         self.monitor.block_disconnected(&header);
 214                         let removal_height = self.height;
 215                         self.txids_confirmed.retain(|_, height| {
 216                                 removal_height != *height
 217                         });
 218                 }
 219         }
 220 }
 221
 222 impl<'a> Drop for MoneyLossDetector<'a> {
 223         fn drop(&mut self) {
 224                 if !::std::thread::panicking() {
 225                         // Disconnect all peers
 226                         for (idx, peer) in self.peers.borrow().iter().enumerate() {
 227                                 if *peer {
 228                                         self.handler.disconnect_event(&Peer{id: idx as u8, peers_connected: &self.peers});
 229                                 }
 230                         }
 231
 232                         // Force all channels onto the chain (and time out claim txn)
 233                         self.manager.force_close_all_channels();
 234                 }
 235         }
 236 }
 237
 238 struct KeyProvider {
 239         node_secret: SecretKey,
 240 }
 241 impl KeysInterface for KeyProvider {
 242         fn get_node_secret(&self) -> SecretKey {
 243                 self.node_secret.clone()
 244         }
 245
 246         fn get_destination_script(&self) -> Script {
 247                 let secp_ctx = Secp256k1::signing_only();
 248                 let channel_monitor_claim_key = SecretKey::from_slice(&hex::decode("0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()[..]).unwrap();
 249                 let our_channel_monitor_claim_key_hash = <Hash160 as bitcoin_hashes::Hash>::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
 250                 Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script()
 251         }
 252
 253         fn get_shutdown_pubkey(&self) -> PublicKey {
 254                 let secp_ctx = Secp256k1::signing_only();
 255                 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())
 256         }
 257
 258         fn get_channel_keys(&self, inbound: bool) -> ChannelKeys {
 259                 if inbound {
 260                         ChannelKeys {
 261                                 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, 0]).unwrap(),
 262                                 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, 0]).unwrap(),
 263                                 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, 0]).unwrap(),
 264                                 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, 0]).unwrap(),
 265                                 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, 0]).unwrap(),
 266                                 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, 0, 0],
 267                         }
 268                 } else {
 269                         ChannelKeys {
 270                                 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, 0, 0]).unwrap(),
 271                                 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, 0, 0]).unwrap(),
 272                                 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, 0, 0]).unwrap(),
 273                                 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, 0, 0]).unwrap(),
 274                                 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, 0, 0]).unwrap(),
 275                                 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, 0, 0],
 276                         }
 277                 }
 278         }
 279
 280         fn get_session_key(&self) -> SecretKey {
 281                 let mut session_key = [0; 32];
 282                 fill_bytes(&mut session_key);
 283                 SecretKey::from_slice(&session_key).unwrap()
 284         }
 285
 286         fn get_channel_id(&self) -> [u8; 32] {
 287                 let mut channel_id = [0; 32];
 288                 fill_bytes(&mut channel_id);
 289                 for i in 0..4 {
 290                         // byteswap the u64s in channel_id to make it distinct from get_session_key (and match
 291                         // old code that wrote out different endianness).
 292                         let mut t;
 293                         t = channel_id[i*8 + 0];
 294                         channel_id[i*8 + 0] = channel_id[i*8 + 7];
 295                         channel_id[i*8 + 7] = t;
 296                         t = channel_id[i*8 + 1];
 297                         channel_id[i*8 + 1] = channel_id[i*8 + 6];
 298                         channel_id[i*8 + 6] = t;
 299                         t = channel_id[i*8 + 2];
 300                         channel_id[i*8 + 2] = channel_id[i*8 + 5];
 301                         channel_id[i*8 + 5] = t;
 302                         t = channel_id[i*8 + 3];
 303                         channel_id[i*8 + 3] = channel_id[i*8 + 4];
 304                         channel_id[i*8 + 4] = t;
 305                 }
 306                 channel_id
 307         }
 308 }
 309
 310 #[inline]
 311 pub fn do_test(data: &[u8], logger: &Arc<Logger>) {
 312         reset_rng_state();
 313
 314         let input = Arc::new(InputData {
 315                 data: data.to_vec(),
 316                 read_pos: AtomicUsize::new(0),
 317         });
 318         let fee_est = Arc::new(FuzzEstimator {
 319                 input: input.clone(),
 320         });
 321
 322         macro_rules! get_slice {
 323                 ($len: expr) => {
 324                         match input.get_slice($len as usize) {
 325                                 Some(slice) => slice,
 326                                 None => return,
 327                         }
 328                 }
 329         }
 330
 331         macro_rules! get_pubkey {
 332                 () => {
 333                         match PublicKey::from_slice(get_slice!(33)) {
 334                                 Ok(key) => key,
 335                                 Err(_) => return,
 336                         }
 337                 }
 338         }
 339
 340         let our_network_key = match SecretKey::from_slice(get_slice!(32)) {
 341                 Ok(key) => key,
 342                 Err(_) => return,
 343         };
 344
 345         let watch = Arc::new(ChainWatchInterfaceUtil::new(Network::Bitcoin, Arc::clone(&logger)));
 346         let broadcast = Arc::new(TestBroadcaster{});
 347         let monitor = channelmonitor::SimpleManyChannelMonitor::new(watch.clone(), broadcast.clone(), Arc::clone(&logger));
 348
 349         let keys_manager = Arc::new(KeyProvider { node_secret: our_network_key.clone() });
 350         let mut config = UserConfig::new();
 351         config.channel_options.fee_proportional_millionths =  slice_to_be32(get_slice!(4));
 352         config.channel_options.announced_channel = get_slice!(1)[0] != 0;
 353         config.peer_channel_config_limits.min_dust_limit_satoshis = 0;
 354         let channelmanager = ChannelManager::new(Network::Bitcoin, fee_est.clone(), monitor.clone(), watch.clone(), broadcast.clone(), Arc::clone(&logger), keys_manager.clone(), config).unwrap();
 355         let router = Arc::new(Router::new(PublicKey::from_secret_key(&Secp256k1::signing_only(), &keys_manager.get_node_secret()), watch.clone(), Arc::clone(&logger)));
 356
 357         let peers = RefCell::new([false; 256]);
 358         let mut loss_detector = MoneyLossDetector::new(&peers, channelmanager.clone(), monitor.clone(), PeerManager::new(MessageHandler {
 359                 chan_handler: channelmanager.clone(),
 360                 route_handler: router.clone(),
 361         }, our_network_key, Arc::clone(&logger)));
 362
 363         let mut should_forward = false;
 364         let mut payments_received: Vec<PaymentHash> = Vec::new();
 365         let mut payments_sent = 0;
 366         let mut pending_funding_generation: Vec<([u8; 32], u64, Script)> = Vec::new();
 367         let mut pending_funding_signatures = HashMap::new();
 368         let mut pending_funding_relay = Vec::new();
 369
 370         loop {
 371                 match get_slice!(1)[0] {
 372                         0 => {
 373                                 let mut new_id = 0;
 374                                 for i in 1..256 {
 375                                         if !peers.borrow()[i-1] {
 376                                                 new_id = i;
 377                                                 break;
 378                                         }
 379                                 }
 380                                 if new_id == 0 { return; }
 381                                 loss_detector.handler.new_outbound_connection(get_pubkey!(), Peer{id: (new_id - 1) as u8, peers_connected: &peers}).unwrap();
 382                                 peers.borrow_mut()[new_id - 1] = true;
 383                         },
 384                         1 => {
 385                                 let mut new_id = 0;
 386                                 for i in 1..256 {
 387                                         if !peers.borrow()[i-1] {
 388                                                 new_id = i;
 389                                                 break;
 390                                         }
 391                                 }
 392                                 if new_id == 0 { return; }
 393                                 loss_detector.handler.new_inbound_connection(Peer{id: (new_id - 1) as u8, peers_connected: &peers}).unwrap();
 394                                 peers.borrow_mut()[new_id - 1] = true;
 395                         },
 396                         2 => {
 397                                 let peer_id = get_slice!(1)[0];
 398                                 if !peers.borrow()[peer_id as usize] { return; }
 399                                 loss_detector.handler.disconnect_event(&Peer{id: peer_id, peers_connected: &peers});
 400                                 peers.borrow_mut()[peer_id as usize] = false;
 401                         },
 402                         3 => {
 403                                 let peer_id = get_slice!(1)[0];
 404                                 if !peers.borrow()[peer_id as usize] { return; }
 405                                 match loss_detector.handler.read_event(&mut Peer{id: peer_id, peers_connected: &peers}, get_slice!(get_slice!(1)[0]).to_vec()) {
 406                                         Ok(res) => assert!(!res),
 407                                         Err(_) => { peers.borrow_mut()[peer_id as usize] = false; }
 408                                 }
 409                         },
 410                         4 => {
 411                                 let value = slice_to_be24(get_slice!(3)) as u64;
 412                                 let route = match router.get_route(&get_pubkey!(), None, &Vec::new(), value, 42) {
 413                                         Ok(route) => route,
 414                                         Err(_) => return,
 415                                 };
 416                                 let mut payment_hash = PaymentHash([0; 32]);
 417                                 payment_hash.0[0..8].copy_from_slice(&be64_to_array(payments_sent));
 418                                 let mut sha = Sha256::engine();
 419                                 sha.input(&payment_hash.0[..]);
 420                                 payment_hash.0 = Sha256::from_engine(sha).into_inner();
 421                                 payments_sent += 1;
 422                                 match channelmanager.send_payment(route, payment_hash) {
 423                                         Ok(_) => {},
 424                                         Err(_) => return,
 425                                 }
 426                         },
 427                         5 => {
 428                                 let peer_id = get_slice!(1)[0];
 429                                 if !peers.borrow()[peer_id as usize] { return; }
 430                                 let their_key = get_pubkey!();
 431                                 let chan_value = slice_to_be24(get_slice!(3)) as u64;
 432                                 let push_msat_value = slice_to_be24(get_slice!(3)) as u64;
 433                                 if channelmanager.create_channel(their_key, chan_value, push_msat_value, 0).is_err() { return; }
 434                         },
 435                         6 => {
 436                                 let mut channels = channelmanager.list_channels();
 437                                 let channel_id = get_slice!(1)[0] as usize;
 438                                 if channel_id >= channels.len() { return; }
 439                                 channels.sort_by(|a, b| { a.channel_id.cmp(&b.channel_id) });
 440                                 if channelmanager.close_channel(&channels[channel_id].channel_id).is_err() { return; }
 441                         },
 442                         7 => {
 443                                 if should_forward {
 444                                         channelmanager.process_pending_htlc_forwards();
 445                                         should_forward = false;
 446                                 }
 447                         },
 448                         8 => {
 449                                 for payment in payments_received.drain(..) {
 450                                         // SHA256 is defined as XOR of all input bytes placed in the first byte, and 0s
 451                                         // for the remaining bytes. Thus, if not all remaining bytes are 0s we cannot
 452                                         // fulfill this HTLC, but if they are, we can just take the first byte and
 453                                         // place that anywhere in our preimage.
 454                                         if &payment.0[1..] != &[0; 31] {
 455                                                 channelmanager.fail_htlc_backwards(&payment);
 456                                         } else {
 457                                                 let mut payment_preimage = PaymentPreimage([0; 32]);
 458                                                 payment_preimage.0[0] = payment.0[0];
 459                                                 channelmanager.claim_funds(payment_preimage);
 460                                         }
 461                                 }
 462                         },
 463                         9 => {
 464                                 for payment in payments_received.drain(..) {
 465                                         channelmanager.fail_htlc_backwards(&payment);
 466                                 }
 467                         },
 468                         10 => {
 469                                 'outer_loop: for funding_generation in pending_funding_generation.drain(..) {
 470                                         let mut tx = Transaction { version: 0, lock_time: 0, input: Vec::new(), output: vec![TxOut {
 471                                                         value: funding_generation.1, script_pubkey: funding_generation.2,
 472                                                 }] };
 473                                         let funding_output = 'search_loop: loop {
 474                                                 let funding_txid = tx.txid();
 475                                                 if let None = loss_detector.txids_confirmed.get(&funding_txid) {
 476                                                         let outpoint = OutPoint::new(funding_txid, 0);
 477                                                         for chan in channelmanager.list_channels() {
 478                                                                 if chan.channel_id == outpoint.to_channel_id() {
 479                                                                         tx.version += 1;
 480                                                                         continue 'search_loop;
 481                                                                 }
 482                                                         }
 483                                                         break outpoint;
 484                                                 }
 485                                                 tx.version += 1;
 486                                                 if tx.version > 0xff {
 487                                                         continue 'outer_loop;
 488                                                 }
 489                                         };
 490                                         channelmanager.funding_transaction_generated(&funding_generation.0, funding_output.clone());
 491                                         pending_funding_signatures.insert(funding_output, tx);
 492                                 }
 493                         },
 494                         11 => {
 495                                 if !pending_funding_relay.is_empty() {
 496                                         loss_detector.connect_block(&pending_funding_relay[..]);
 497                                         for _ in 2..100 {
 498                                                 loss_detector.connect_block(&[]);
 499                                         }
 500                                 }
 501                                 for tx in pending_funding_relay.drain(..) {
 502                                         loss_detector.funding_txn.push(tx);
 503                                 }
 504                         },
 505                         12 => {
 506                                 let txlen = slice_to_be16(get_slice!(2));
 507                                 if txlen == 0 {
 508                                         loss_detector.connect_block(&[]);
 509                                 } else {
 510                                         let txres: Result<Transaction, _> = deserialize(get_slice!(txlen));
 511                                         if let Ok(tx) = txres {
 512                                                 loss_detector.connect_block(&[tx]);
 513                                         } else {
 514                                                 return;
 515                                         }
 516                                 }
 517                         },
 518                         13 => {
 519                                 loss_detector.disconnect_block();
 520                         },
 521                         14 => {
 522                                 let mut channels = channelmanager.list_channels();
 523                                 let channel_id = get_slice!(1)[0] as usize;
 524                                 if channel_id >= channels.len() { return; }
 525                                 channels.sort_by(|a, b| { a.channel_id.cmp(&b.channel_id) });
 526                                 channelmanager.force_close_channel(&channels[channel_id].channel_id);
 527                         },
 528                         _ => return,
 529                 }
 530                 loss_detector.handler.process_events();
 531                 for event in loss_detector.manager.get_and_clear_pending_events() {
 532                         match event {
 533                                 Event::FundingGenerationReady { temporary_channel_id, channel_value_satoshis, output_script, .. } => {
 534                                         pending_funding_generation.push((temporary_channel_id, channel_value_satoshis, output_script));
 535                                 },
 536                                 Event::FundingBroadcastSafe { funding_txo, .. } => {
 537                                         pending_funding_relay.push(pending_funding_signatures.remove(&funding_txo).unwrap());
 538                                 },
 539                                 Event::PaymentReceived { payment_hash, .. } => {
 540                                         payments_received.push(payment_hash);
 541                                 },
 542                                 Event::PaymentSent {..} => {},
 543                                 Event::PaymentFailed {..} => {},
 544                                 Event::PendingHTLCsForwardable {..} => {
 545                                         should_forward = true;
 546                                 },
 547                                 Event::SpendableOutputs {..} => {},
 548                         }
 549                 }
 550         }
 551 }
 552
 553 #[cfg(feature = "afl")]
 554 #[macro_use] extern crate afl;
 555 #[cfg(feature = "afl")]
 556 fn main() {
 557         fuzz!(|data| {
 558                 let logger: Arc<Logger> = Arc::new(test_logger::TestLogger::new("".to_owned()));
 559                 do_test(data, &logger);
 560         });
 561 }
 562
 563 #[cfg(feature = "honggfuzz")]
 564 #[macro_use] extern crate honggfuzz;
 565 #[cfg(feature = "honggfuzz")]
 566 fn main() {
 567         loop {
 568                 fuzz!(|data| {
 569                         let logger: Arc<Logger> = Arc::new(test_logger::TestLogger::new("".to_owned()));
 570                         do_test(data, &logger);
 571                 });
 572         }
 573 }
 574
 575 #[cfg(feature = "libfuzzer_fuzz")]
 576 #[macro_use] extern crate libfuzzer_sys;
 577 #[cfg(feature = "libfuzzer_fuzz")]
 578 fuzz_target!(|data: &[u8]| {
 579         let logger: Arc<Logger> = Arc::new(test_logger::TestLogger::new("".to_owned()));
 580         do_test(data, &logger);
 581 });
 582
 583 extern crate hex;
 584 #[cfg(test)]
 585 mod tests {
 586         use utils::test_logger;
 587         use lightning::util::logger::{Logger, Record};
 588         use std::collections::HashMap;
 589         use std::sync::{Arc, Mutex};
 590
 591         #[test]
 592         fn duplicate_crash() {
 593                 let logger: Arc<Logger> = Arc::new(test_logger::TestLogger::new("".to_owned()));
 594                 super::do_test(&::hex::decode("00").unwrap(), &logger);
 595         }
 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                 // 0000000000000000000000000000000000000000000000000000000000000000 - our network key
 626                 // 00000000 - fee_proportional_millionths
 627                 // 01 - announce_channels_publicly
 628                 //
 629                 // 00 - new outbound connection with id 0
 630                 // 030000000000000000000000000000000000000000000000000000000000000000 - peer's pubkey
 631                 // 030032 - inbound read from peer id 0 of len 50
 632                 // 00 030000000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - noise act two (0||pubkey||mac)
 633                 //
 634                 // 030012 - inbound read from peer id 0 of len 18
 635                 // 0006 03000000000000000000000000000000 - message header indicating message length 6
 636                 // 030016 - inbound read from peer id 0 of len 22
 637                 // 0010 00000000 03000000000000000000000000000000 - init message with no features (type 16) and mac
 638                 //
 639                 // 030012 - inbound read from peer id 0 of len 18
 640                 // 0141 03000000000000000000000000000000 - message header indicating message length 321
 641                 // 0300fe - inbound read from peer id 0 of len 254
 642                 // 0020 7500000000000000000000000000000000000000000000000000000000000000 ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679 000000000000c350 0000000000000000 0000000000000222 ffffffffffffffff 0000000000000222 0000000000000000 000000fd 0006 01e3 030000000000000000000000000000000000000000000000000000000000000001 030000000000000000000000000000000000000000000000000000000000000002 030000000000000000000000000000000000000000000000000000000000000003 030000000000000000000000000000000000000000000000000000000000000004 - beginning of open_channel message
 643                 // 030053 - inbound read from peer id 0 of len 83
 644                 // 030000000000000000000000000000000000000000000000000000000000000005 030000000000000000000000000000000000000000000000000000000000000000 01 03000000000000000000000000000000 - rest of open_channel and mac
 645                 //
 646                 // 00fd00fd00fd - Three feerate requests (all returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 647                 // - client should now respond with accept_channel (CHECK 1: type 33 to peer 03000000)
 648                 //
 649                 // 030012 - inbound read from peer id 0 of len 18
 650                 // 0084 03000000000000000000000000000000 - message header indicating message length 132
 651                 // 030094 - inbound read from peer id 0 of len 148
 652                 // 0022 ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679 3d00000000000000000000000000000000000000000000000000000000000000 0000 5c000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 03000000000000000000000000000000 - funding_created and mac
 653                 // - client should now respond with funding_signed (CHECK 2: type 35 to peer 03000000)
 654                 //
 655                 // 0c005e - connect a block with one transaction of len 94
 656                 // 020000000100000000000000000000000000000000000000000000000000000000000000000000000000ffffffff0150c3000000000000220020ae0000000000000000000000000000000000000000000000000000000000000000000000 - the funding transaction
 657                 // 0c0000 - connect a block with no transactions
 658                 // 0c0000 - connect a block with no transactions
 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                 // - by now client should have sent a funding_locked (CHECK 3: SendFundingLocked to 03000000 for chan 3d000000)
 670                 //
 671                 // 030012 - inbound read from peer id 0 of len 18
 672                 // 0043 03000000000000000000000000000000 - message header indicating message length 67
 673                 // 030053 - inbound read from peer id 0 of len 83
 674                 // 0024 3d00000000000000000000000000000000000000000000000000000000000000 030100000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - funding_locked and mac
 675                 //
 676                 // 01 - new inbound connection with id 1
 677                 // 030132 - inbound read from peer id 1 of len 50
 678                 // 0003000000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000 - inbound noise act 1
 679                 // 030142 - inbound read from peer id 1 of len 66
 680                 // 000302000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000003000000000000000000000000000000 - inbound noise act 3
 681                 //
 682                 // 030112 - inbound read from peer id 1 of len 18
 683                 // 0006 01000000000000000000000000000000 - message header indicating message length 6
 684                 // 030116 - inbound read from peer id 1 of len 22
 685                 // 0010 00000000 01000000000000000000000000000000 - init message with no features (type 16)
 686                 //
 687                 // 05 01 030200000000000000000000000000000000000000000000000000000000000000 00c350 0003e8 - create outbound channel to peer 1 for 50k sat
 688                 // 00fd00fd00fd - Three feerate requests (all returning min feerate) (gonna be ingested by FuzzEstimator)
 689                 //
 690                 // 030112 - inbound read from peer id 1 of len 18
 691                 // 0110 01000000000000000000000000000000 - message header indicating message length 272
 692                 // 0301ff - inbound read from peer id 1 of len 255
 693                 // 0021 0200000000000000020000000000000002000000000000000200000000000000 000000000000001a 00000000004c4b40 00000000000003e8 00000000000003e8 00000002 03f0 0005 030000000000000000000000000000000000000000000000000000000000000100 030000000000000000000000000000000000000000000000000000000000000200 030000000000000000000000000000000000000000000000000000000000000300 030000000000000000000000000000000000000000000000000000000000000400 030000000000000000000000000000000000000000000000000000000000000500 03000000000000000000000000000000 - beginning of accept_channel
 694                 // 030121 - inbound read from peer id 1 of len 33
 695                 // 0000000000000000000000000000000000 01000000000000000000000000000000 - rest of accept_channel and mac
 696                 //
 697                 // 0a - create the funding transaction (client should send funding_created now)
 698                 //
 699                 // 030112 - inbound read from peer id 1 of len 18
 700                 // 0062 01000000000000000000000000000000 - message header indicating message length 98
 701                 // 030172 - inbound read from peer id 1 of len 114
 702                 // 0023 3f00000000000000000000000000000000000000000000000000000000000000f6000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 01000000000000000000000000000000 - funding_signed message and mac
 703                 //
 704                 // 0b - broadcast funding transaction
 705                 // - by now client should have sent a funding_locked (CHECK 4: SendFundingLocked to 03020000 for chan 3f000000)
 706                 //
 707                 // 030112 - inbound read from peer id 1 of len 18
 708                 // 0043 01000000000000000000000000000000 - message header indicating message length 67
 709                 // 030153 - inbound read from peer id 1 of len 83
 710                 // 0024 3f00000000000000000000000000000000000000000000000000000000000000 030100000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - funding_locked and mac
 711                 //
 712                 // 030012 - inbound read from peer id 0 of len 18
 713                 // 05ac 03000000000000000000000000000000 - message header indicating message length 1452
 714                 // 0300ff - inbound read from peer id 0 of len 255
 715                 // 0080 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000000 0000000000003e80 ff00000000000000000000000000000000000000000000000000000000000000 00000121 00 030000000000000000000000000000000000000000000000000000000000000555 0000000e000001000000000000000003e8000000010000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff - beginning of update_add_htlc from 0 to 1 via client
 716                 // 0300ff - inbound read from peer id 0 of len 255
 717                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 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                 // 0300c1 - inbound read from peer id 0 of len 193
 725                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ef00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - end of update_add_htlc from 0 to 1 via client and mac
 726                 //
 727                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 728                 //
 729                 // 030012 - inbound read from peer id 0 of len 18
 730                 // 0064 03000000000000000000000000000000 - message header indicating message length 100
 731                 // 030074 - inbound read from peer id 0 of len 116
 732                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 4d000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 0000 03000000000000000000000000000000 - commitment_signed and mac
 733                 // - client should now respond with revoke_and_ack and commitment_signed (CHECK 5/6: types 133 and 132 to peer 03000000)
 734                 //
 735                 // 030012 - inbound read from peer id 0 of len 18
 736                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 737                 // 030073 - inbound read from peer id 0 of len 115
 738                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 030200000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 739                 //
 740                 // 07 - process the now-pending HTLC forward
 741                 // - client now sends id 1 update_add_htlc and commitment_signed (CHECK 7: SendHTLCs event for node 03020000 with 1 HTLCs for channel 3f000000)
 742                 //
 743                 // - we respond with commitment_signed then revoke_and_ack (a weird, but valid, order)
 744                 // 030112 - inbound read from peer id 1 of len 18
 745                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 746                 // 030174 - inbound read from peer id 1 of len 116
 747                 // 0084 3f00000000000000000000000000000000000000000000000000000000000000 f7000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 0000 01000000000000000000000000000000 - commitment_signed and mac
 748                 //
 749                 // 030112 - inbound read from peer id 1 of len 18
 750                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 751                 // 030173 - inbound read from peer id 1 of len 115
 752                 // 0085 3f00000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 030200000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 753                 //
 754                 // 030112 - inbound read from peer id 1 of len 18
 755                 // 004a 01000000000000000000000000000000 - message header indicating message length 74
 756                 // 03015a - inbound read from peer id 1 of len 90
 757                 // 0082 3f00000000000000000000000000000000000000000000000000000000000000 0000000000000000 ff00888888888888888888888888888888888888888888888888888888888888 01000000000000000000000000000000 - update_fulfill_htlc and mac
 758                 // - client should immediately claim the pending HTLC from peer 0 (CHECK 8: SendFulfillHTLCs for node 03000000 with preimage ff00888888 for channel 3d000000)
 759                 //
 760                 // 030112 - inbound read from peer id 1 of len 18
 761                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 762                 // 030174 - inbound read from peer id 1 of len 116
 763                 // 0084 3f00000000000000000000000000000000000000000000000000000000000000 fb000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 0000 01000000000000000000000000000000 - commitment_signed and mac
 764                 //
 765                 // 030112 - inbound read from peer id 1 of len 18
 766                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 767                 // 030173 - inbound read from peer id 1 of len 115
 768                 // 0085 3f00000000000000000000000000000000000000000000000000000000000000 0100000000000000000000000000000000000000000000000000000000000000 030300000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 769                 //
 770                 // - before responding to the commitment_signed generated above, send a new HTLC
 771                 // 030012 - inbound read from peer id 0 of len 18
 772                 // 05ac 03000000000000000000000000000000 - message header indicating message length 1452
 773                 // 0300ff - inbound read from peer id 0 of len 255
 774                 // 0080 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000001 0000000000003e80 ff00000000000000000000000000000000000000000000000000000000000000 00000121 00 030000000000000000000000000000000000000000000000000000000000000555 0000000e000001000000000000000003e8000000010000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff - beginning of update_add_htlc from 0 to 1 via client
 775                 // 0300ff - inbound read from peer id 0 of len 255
 776                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 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                 // 0300c1 - inbound read from peer id 0 of len 193
 784                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ef00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - end of update_add_htlc from 0 to 1 via client and mac
 785                 //
 786                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 787                 //
 788                 // - now respond to the update_fulfill_htlc+commitment_signed messages the client sent to peer 0
 789                 // 030012 - inbound read from peer id 0 of len 18
 790                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 791                 // 030073 - inbound read from peer id 0 of len 115
 792                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0100000000000000000000000000000000000000000000000000000000000000 030300000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 793                 // - client should now respond with revoke_and_ack and commitment_signed (CHECK 5/6 duplicates)
 794                 //
 795                 // 030012 - inbound read from peer id 0 of len 18
 796                 // 0064 03000000000000000000000000000000 - message header indicating message length 100
 797                 // 030074 - inbound read from peer id 0 of len 116
 798                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 be000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 0000 03000000000000000000000000000000 - commitment_signed and mac
 799                 //
 800                 // 030012 - inbound read from peer id 0 of len 18
 801                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 802                 // 030073 - inbound read from peer id 0 of len 115
 803                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0200000000000000000000000000000000000000000000000000000000000000 030400000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 804                 //
 805                 // 07 - process the now-pending HTLC forward
 806                 // - client now sends id 1 update_add_htlc and commitment_signed (CHECK 7 duplicate)
 807                 // - we respond with revoke_and_ack, then commitment_signed, then update_fail_htlc
 808                 //
 809                 // 030112 - inbound read from peer id 1 of len 18
 810                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 811                 // 030174 - inbound read from peer id 1 of len 116
 812                 // 0084 3f00000000000000000000000000000000000000000000000000000000000000 fa000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 0000 01000000000000000000000000000000 - commitment_signed and mac
 813                 //
 814                 // 030112 - inbound read from peer id 1 of len 18
 815                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 816                 // 030173 - inbound read from peer id 1 of len 115
 817                 // 0085 3f00000000000000000000000000000000000000000000000000000000000000 0200000000000000000000000000000000000000000000000000000000000000 030400000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 818                 //
 819                 // 030112 - inbound read from peer id 1 of len 18
 820                 // 002c 01000000000000000000000000000000 - message header indicating message length 44
 821                 // 03013c - inbound read from peer id 1 of len 60
 822                 // 0083 3f00000000000000000000000000000000000000000000000000000000000000 0000000000000001 0000 01000000000000000000000000000000 - update_fail_htlc and mac
 823                 //
 824                 // 030112 - inbound read from peer id 1 of len 18
 825                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 826                 // 030174 - inbound read from peer id 1 of len 116
 827                 // 0084 3f00000000000000000000000000000000000000000000000000000000000000 fd000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 0000 01000000000000000000000000000000 - commitment_signed and mac
 828                 //
 829                 // 030112 - inbound read from peer id 1 of len 18
 830                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 831                 // 030173 - inbound read from peer id 1 of len 115
 832                 // 0085 3f00000000000000000000000000000000000000000000000000000000000000 0300000000000000000000000000000000000000000000000000000000000000 030500000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 833                 //
 834                 // 07 - process the now-pending HTLC forward
 835                 // - client now sends id 0 update_fail_htlc and commitment_signed (CHECK 9)
 836                 // - now respond to the update_fail_htlc+commitment_signed messages the client sent to peer 0
 837                 //
 838                 // 030012 - inbound read from peer id 0 of len 18
 839                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 840                 // 030073 - inbound read from peer id 0 of len 115
 841                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0300000000000000000000000000000000000000000000000000000000000000 030500000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 842                 //
 843                 // 030012 - inbound read from peer id 0 of len 18
 844                 // 0064 03000000000000000000000000000000 - message header indicating message length 100
 845                 // 030074 - inbound read from peer id 0 of len 116
 846                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 4f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 0000 03000000000000000000000000000000 - commitment_signed and mac
 847                 // - client should now respond with revoke_and_ack (CHECK 5 duplicate)
 848                 //
 849                 // 030012 - inbound read from peer id 0 of len 18
 850                 // 05ac 03000000000000000000000000000000 - message header indicating message length 1452
 851                 // 0300ff - inbound read from peer id 0 of len 255
 852                 // 0080 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000002 00000000000b0838 ff00000000000000000000000000000000000000000000000000000000000000 00000121 00 030000000000000000000000000000000000000000000000000000000000000555 0000000e0000010000000000000003e800000000010000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff - beginning of update_add_htlc from 0 to 1 via client
 853                 // 0300ff - inbound read from peer id 0 of len 255
 854                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 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                 // 0300c1 - inbound read from peer id 0 of len 193
 862                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ef00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - end of update_add_htlc from 0 to 1 via client and mac
 863                 //
 864                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 865                 //
 866                 // 030012 - inbound read from peer id 0 of len 18
 867                 // 00a4 03000000000000000000000000000000 - message header indicating message length 164
 868                 // 0300b4 - inbound read from peer id 0 of len 180
 869                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 07000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 0001 c8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007f00000000000000 03000000000000000000000000000000 - commitment_signed and mac
 870                 // - client should now respond with revoke_and_ack and commitment_signed (CHECK 5/6 duplicates)
 871                 //
 872                 // 030012 - inbound read from peer id 0 of len 18
 873                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 874                 // 030073 - inbound read from peer id 0 of len 115
 875                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0400000000000000000000000000000000000000000000000000000000000000 030600000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 876                 //
 877                 // 07 - process the now-pending HTLC forward
 878                 // - client now sends id 1 update_add_htlc and commitment_signed (CHECK 7 duplicate)
 879                 //
 880                 // 0c007d - connect a block with one transaction of len 125
 881                 // 02000000013f00000000000000000000000000000000000000000000000000000000000000000000000000000080020001000000000000220020e2000000000000000000000000000000000000000000000000000000000000006cc10000000000001600142e0000000000000000000000000000000000000005000020 - the commitment transaction for channel 3f00000000000000000000000000000000000000000000000000000000000000
 882                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator)
 883                 // 0c005e - connect a block with one transaction of len 94
 884                 // 0200000001fb00000000000000000000000000000000000000000000000000000000000000000000000000000000014f00000000000000220020f60000000000000000000000000000000000000000000000000000000000000000000000 - the commitment transaction for channel 3d00000000000000000000000000000000000000000000000000000000000000
 885                 //
 886                 // 07 - process the now-pending HTLC forward
 887                 // - client now fails the HTLC backwards as it was unable to extract the payment preimage (CHECK 9 duplicate and CHECK 10)
 888
 889                 let logger = Arc::new(TrackingLogger { lines: Mutex::new(HashMap::new()) });
 890                 super::do_test(&::hex::decode("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 891
 892                 let log_entries = logger.lines.lock().unwrap();
 893                 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
 894                 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
 895                 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
 896                 assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendFundingLocked event in peer_handler for node 030200000000000000000000000000000000000000000000000000000000000000 for channel 3f00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&1)); // 4
 897                 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
 898                 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
 899                 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 3f00000000000000000000000000000000000000000000000000000000000000".to_string())), Some(&3)); // 7
 900                 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
 901                 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
 902                 assert_eq!(log_entries.get(&("lightning::ln::channelmonitor".to_string(), "Input spending remote commitment tx (00000000000000000000000000000000000000000000000000000000000000fb:0) in 0000000000000000000000000000000000000000000000000000000000000042 resolves outbound HTLC with payment hash ff00000000000000000000000000000000000000000000000000000000000000 with timeout".to_string())), Some(&1)); // 10
 903         }
 904 }