_ Git - rust-lightning/blob - fuzz/fuzz_targets/full_stack_target.rs

   1 extern crate bitcoin;
   2 extern crate crypto;
   3 extern crate lightning;
   4 extern crate secp256k1;
   5
   6 use bitcoin::blockdata::block::BlockHeader;
   7 use bitcoin::blockdata::transaction::{Transaction, TxOut};
   8 use bitcoin::blockdata::script::{Builder, Script};
   9 use bitcoin::blockdata::opcodes;
  10 use bitcoin::network::constants::Network;
  11 use bitcoin::network::serialize::{deserialize, serialize, BitcoinHash};
  12 use bitcoin::util::hash::{Sha256dHash, Hash160};
  13
  14 use crypto::digest::Digest;
  15
  16 use lightning::chain::chaininterface::{BroadcasterInterface,ConfirmationTarget,ChainListener,FeeEstimator,ChainWatchInterfaceUtil};
  17 use lightning::chain::transaction::OutPoint;
  18 use lightning::chain::keysinterface::{ChannelKeys, KeysInterface};
  19 use lightning::ln::channelmonitor;
  20 use lightning::ln::channelmanager::{ChannelManager, PaymentFailReason};
  21 use lightning::ln::peer_handler::{MessageHandler,PeerManager,SocketDescriptor};
  22 use lightning::ln::router::Router;
  23 use lightning::util::events::{EventsProvider,Event};
  24 use lightning::util::reset_rng_state;
  25 use lightning::util::logger::Logger;
  26 use lightning::util::sha2::Sha256;
  27
  28 mod utils;
  29
  30 use utils::test_logger;
  31
  32 use secp256k1::key::{PublicKey,SecretKey};
  33 use secp256k1::Secp256k1;
  34
  35 use std::cell::RefCell;
  36 use std::collections::HashMap;
  37 use std::cmp;
  38 use std::hash::Hash;
  39 use std::sync::Arc;
  40 use std::sync::atomic::{AtomicUsize,Ordering};
  41
  42 #[inline]
  43 pub fn slice_to_be16(v: &[u8]) -> u16 {
  44         ((v[0] as u16) << 8*1) |
  45         ((v[1] as u16) << 8*0)
  46 }
  47
  48 #[inline]
  49 pub fn slice_to_be24(v: &[u8]) -> u32 {
  50         ((v[0] as u32) << 8*2) |
  51         ((v[1] as u32) << 8*1) |
  52         ((v[2] as u32) << 8*0)
  53 }
  54
  55 #[inline]
  56 pub fn slice_to_be32(v: &[u8]) -> u32 {
  57         ((v[0] as u32) << 8*3) |
  58         ((v[1] as u32) << 8*2) |
  59         ((v[2] as u32) << 8*1) |
  60         ((v[3] as u32) << 8*0)
  61 }
  62
  63 #[inline]
  64 pub fn be64_to_array(u: u64) -> [u8; 8] {
  65         let mut v = [0; 8];
  66         v[0] = ((u >> 8*7) & 0xff) as u8;
  67         v[1] = ((u >> 8*6) & 0xff) as u8;
  68         v[2] = ((u >> 8*5) & 0xff) as u8;
  69         v[3] = ((u >> 8*4) & 0xff) as u8;
  70         v[4] = ((u >> 8*3) & 0xff) as u8;
  71         v[5] = ((u >> 8*2) & 0xff) as u8;
  72         v[6] = ((u >> 8*1) & 0xff) as u8;
  73         v[7] = ((u >> 8*0) & 0xff) as u8;
  74         v
  75 }
  76
  77 struct InputData {
  78         data: Vec<u8>,
  79         read_pos: AtomicUsize,
  80 }
  81 impl InputData {
  82         fn get_slice(&self, len: usize) -> Option<&[u8]> {
  83                 let old_pos = self.read_pos.fetch_add(len, Ordering::AcqRel);
  84                 if self.data.len() < old_pos + len {
  85                         return None;
  86                 }
  87                 Some(&self.data[old_pos..old_pos + len])
  88         }
  89 }
  90
  91 struct FuzzEstimator {
  92         input: Arc<InputData>,
  93 }
  94 impl FeeEstimator for FuzzEstimator {
  95         fn get_est_sat_per_1000_weight(&self, _: ConfirmationTarget) -> u64 {
  96                 //TODO: We should actually be testing at least much more than 64k...
  97                 match self.input.get_slice(2) {
  98                         Some(slice) => cmp::max(slice_to_be16(slice) as u64, 253),
  99                         None => 0
 100                 }
 101         }
 102 }
 103
 104 struct TestBroadcaster {}
 105 impl BroadcasterInterface for TestBroadcaster {
 106         fn broadcast_transaction(&self, _tx: &Transaction) {}
 107 }
 108
 109 #[derive(Clone)]
 110 struct Peer<'a> {
 111         id: u8,
 112         peers_connected: &'a RefCell<[bool; 256]>,
 113 }
 114 impl<'a> SocketDescriptor for Peer<'a> {
 115         fn send_data(&mut self, data: &Vec<u8>, write_offset: usize, _resume_read: bool) -> usize {
 116                 assert!(write_offset < data.len());
 117                 data.len() - write_offset
 118         }
 119         fn disconnect_socket(&mut self) {
 120                 assert!(self.peers_connected.borrow()[self.id as usize]);
 121                 self.peers_connected.borrow_mut()[self.id as usize] = false;
 122         }
 123 }
 124 impl<'a> PartialEq for Peer<'a> {
 125         fn eq(&self, other: &Self) -> bool {
 126                 self.id == other.id
 127         }
 128 }
 129 impl<'a> Eq for Peer<'a> {}
 130 impl<'a> Hash for Peer<'a> {
 131         fn hash<H : std::hash::Hasher>(&self, h: &mut H) {
 132                 self.id.hash(h)
 133         }
 134 }
 135
 136 struct MoneyLossDetector<'a> {
 137         manager: Arc<ChannelManager>,
 138         monitor: Arc<channelmonitor::SimpleManyChannelMonitor<OutPoint>>,
 139         handler: PeerManager<Peer<'a>>,
 140
 141         peers: &'a RefCell<[bool; 256]>,
 142         funding_txn: Vec<Transaction>,
 143         header_hashes: Vec<Sha256dHash>,
 144         height: usize,
 145         max_height: usize,
 146
 147 }
 148 impl<'a> MoneyLossDetector<'a> {
 149         pub fn new(peers: &'a RefCell<[bool; 256]>, manager: Arc<ChannelManager>, monitor: Arc<channelmonitor::SimpleManyChannelMonitor<OutPoint>>, handler: PeerManager<Peer<'a>>) -> Self {
 150                 MoneyLossDetector {
 151                         manager,
 152                         monitor,
 153                         handler,
 154
 155                         peers,
 156                         funding_txn: Vec::new(),
 157                         header_hashes: vec![Default::default()],
 158                         height: 0,
 159                         max_height: 0,
 160                 }
 161         }
 162
 163         fn connect_block(&mut self, txn: &[&Transaction], txn_idxs: &[u32]) {
 164                 let header = BlockHeader { version: 0x20000000, prev_blockhash: self.header_hashes[self.height], merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 165                 self.height += 1;
 166                 self.manager.block_connected(&header, self.height as u32, txn, txn_idxs);
 167                 (*self.monitor).block_connected(&header, self.height as u32, txn, txn_idxs);
 168                 if self.header_hashes.len() > self.height {
 169                         self.header_hashes[self.height] = header.bitcoin_hash();
 170                 } else {
 171                         assert_eq!(self.header_hashes.len(), self.height);
 172                         self.header_hashes.push(header.bitcoin_hash());
 173                 }
 174                 self.max_height = cmp::max(self.height, self.max_height);
 175         }
 176
 177         fn disconnect_block(&mut self) {
 178                 if self.height > 0 && (self.max_height < 6 || self.height >= self.max_height - 6) {
 179                         self.height -= 1;
 180                         let header = BlockHeader { version: 0x20000000, prev_blockhash: self.header_hashes[self.height], merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 181                         self.manager.block_disconnected(&header);
 182                         self.monitor.block_disconnected(&header);
 183                 }
 184         }
 185 }
 186
 187 impl<'a> Drop for MoneyLossDetector<'a> {
 188         fn drop(&mut self) {
 189                 // Disconnect all peers
 190                 for (idx, peer) in self.peers.borrow().iter().enumerate() {
 191                         if *peer {
 192                                 self.handler.disconnect_event(&Peer{id: idx as u8, peers_connected: &self.peers});
 193                         }
 194                 }
 195
 196                 // Force all channels onto the chain (and time out claim txn)
 197                 self.manager.force_close_all_channels();
 198         }
 199 }
 200
 201 struct KeyProvider {
 202         node_secret: SecretKey,
 203 }
 204 impl KeysInterface for KeyProvider {
 205         fn get_node_secret(&self) -> SecretKey {
 206                 self.node_secret.clone()
 207         }
 208
 209         fn get_destination_script(&self) -> Script {
 210                 let secp_ctx = Secp256k1::signing_only();
 211                 let channel_monitor_claim_key = SecretKey::from_slice(&secp_ctx, &hex::decode("0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()[..]).unwrap();
 212                 let our_channel_monitor_claim_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
 213                 Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script()
 214         }
 215
 216         fn get_shutdown_pubkey(&self) -> PublicKey {
 217                 let secp_ctx = Secp256k1::signing_only();
 218                 PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 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())
 219         }
 220
 221         fn get_channel_keys(&self, inbound: bool) -> ChannelKeys {
 222                 let secp_ctx = Secp256k1::without_caps();
 223                 if inbound {
 224                         ChannelKeys {
 225                                 funding_key:               SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 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(),
 226                                 revocation_base_key:       SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 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(),
 227                                 payment_base_key:          SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 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(),
 228                                 delayed_payment_base_key:  SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 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(),
 229                                 htlc_base_key:             SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 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(),
 230                                 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],
 231                         }
 232                 } else {
 233                         ChannelKeys {
 234                                 funding_key:               SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 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(),
 235                                 revocation_base_key:       SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 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(),
 236                                 payment_base_key:          SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 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(),
 237                                 delayed_payment_base_key:  SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 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(),
 238                                 htlc_base_key:             SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 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(),
 239                                 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],
 240                         }
 241                 }
 242         }
 243 }
 244
 245 #[inline]
 246 pub fn do_test(data: &[u8], logger: &Arc<Logger>) {
 247         reset_rng_state();
 248
 249         let input = Arc::new(InputData {
 250                 data: data.to_vec(),
 251                 read_pos: AtomicUsize::new(0),
 252         });
 253         let fee_est = Arc::new(FuzzEstimator {
 254                 input: input.clone(),
 255         });
 256
 257         macro_rules! get_slice {
 258                 ($len: expr) => {
 259                         match input.get_slice($len as usize) {
 260                                 Some(slice) => slice,
 261                                 None => return,
 262                         }
 263                 }
 264         }
 265
 266         let secp_ctx = Secp256k1::new();
 267         macro_rules! get_pubkey {
 268                 () => {
 269                         match PublicKey::from_slice(&secp_ctx, get_slice!(33)) {
 270                                 Ok(key) => key,
 271                                 Err(_) => return,
 272                         }
 273                 }
 274         }
 275
 276         let our_network_key = match SecretKey::from_slice(&secp_ctx, get_slice!(32)) {
 277                 Ok(key) => key,
 278                 Err(_) => return,
 279         };
 280
 281         let watch = Arc::new(ChainWatchInterfaceUtil::new(Network::Bitcoin, Arc::clone(&logger)));
 282         let broadcast = Arc::new(TestBroadcaster{});
 283         let monitor = channelmonitor::SimpleManyChannelMonitor::new(watch.clone(), broadcast.clone());
 284
 285         let keys_manager = Arc::new(KeyProvider { node_secret: our_network_key.clone() });
 286         let channelmanager = ChannelManager::new(slice_to_be32(get_slice!(4)), get_slice!(1)[0] != 0, Network::Bitcoin, fee_est.clone(), monitor.clone(), watch.clone(), broadcast.clone(), Arc::clone(&logger), keys_manager.clone()).unwrap();
 287         let router = Arc::new(Router::new(PublicKey::from_secret_key(&secp_ctx, &keys_manager.get_node_secret()), watch.clone(), Arc::clone(&logger)));
 288
 289         let peers = RefCell::new([false; 256]);
 290         let mut loss_detector = MoneyLossDetector::new(&peers, channelmanager.clone(), monitor.clone(), PeerManager::new(MessageHandler {
 291                 chan_handler: channelmanager.clone(),
 292                 route_handler: router.clone(),
 293         }, our_network_key, Arc::clone(&logger)));
 294
 295         let mut should_forward = false;
 296         let mut payments_received: Vec<[u8; 32]> = Vec::new();
 297         let mut payments_sent = 0;
 298         let mut pending_funding_generation: Vec<([u8; 32], u64, Script)> = Vec::new();
 299         let mut pending_funding_signatures = HashMap::new();
 300         let mut pending_funding_relay = Vec::new();
 301
 302         loop {
 303                 match get_slice!(1)[0] {
 304                         0 => {
 305                                 let mut new_id = 0;
 306                                 for i in 1..256 {
 307                                         if !peers.borrow()[i-1] {
 308                                                 new_id = i;
 309                                                 break;
 310                                         }
 311                                 }
 312                                 if new_id == 0 { return; }
 313                                 loss_detector.handler.new_outbound_connection(get_pubkey!(), Peer{id: (new_id - 1) as u8, peers_connected: &peers}).unwrap();
 314                                 peers.borrow_mut()[new_id - 1] = true;
 315                         },
 316                         1 => {
 317                                 let mut new_id = 0;
 318                                 for i in 1..256 {
 319                                         if !peers.borrow()[i-1] {
 320                                                 new_id = i;
 321                                                 break;
 322                                         }
 323                                 }
 324                                 if new_id == 0 { return; }
 325                                 loss_detector.handler.new_inbound_connection(Peer{id: (new_id - 1) as u8, peers_connected: &peers}).unwrap();
 326                                 peers.borrow_mut()[new_id - 1] = true;
 327                         },
 328                         2 => {
 329                                 let peer_id = get_slice!(1)[0];
 330                                 if !peers.borrow()[peer_id as usize] { return; }
 331                                 loss_detector.handler.disconnect_event(&Peer{id: peer_id, peers_connected: &peers});
 332                                 peers.borrow_mut()[peer_id as usize] = false;
 333                         },
 334                         3 => {
 335                                 let peer_id = get_slice!(1)[0];
 336                                 if !peers.borrow()[peer_id as usize] { return; }
 337                                 match loss_detector.handler.read_event(&mut Peer{id: peer_id, peers_connected: &peers}, get_slice!(get_slice!(1)[0]).to_vec()) {
 338                                         Ok(res) => assert!(!res),
 339                                         Err(_) => { peers.borrow_mut()[peer_id as usize] = false; }
 340                                 }
 341                         },
 342                         4 => {
 343                                 let value = slice_to_be24(get_slice!(3)) as u64;
 344                                 let route = match router.get_route(&get_pubkey!(), None, &Vec::new(), value, 42) {
 345                                         Ok(route) => route,
 346                                         Err(_) => return,
 347                                 };
 348                                 let mut payment_hash = [0; 32];
 349                                 payment_hash[0..8].copy_from_slice(&be64_to_array(payments_sent));
 350                                 let mut sha = Sha256::new();
 351                                 sha.input(&payment_hash);
 352                                 sha.result(&mut payment_hash);
 353                                 payments_sent += 1;
 354                                 match channelmanager.send_payment(route, payment_hash) {
 355                                         Ok(_) => {},
 356                                         Err(_) => return,
 357                                 }
 358                         },
 359                         5 => {
 360                                 let peer_id = get_slice!(1)[0];
 361                                 if !peers.borrow()[peer_id as usize] { return; }
 362                                 let their_key = get_pubkey!();
 363                                 let chan_value = slice_to_be24(get_slice!(3)) as u64;
 364                                 let push_msat_value = slice_to_be24(get_slice!(3)) as u64;
 365                                 if channelmanager.create_channel(their_key, chan_value, push_msat_value, 0).is_err() { return; }
 366                         },
 367                         6 => {
 368                                 let mut channels = channelmanager.list_channels();
 369                                 let channel_id = get_slice!(1)[0] as usize;
 370                                 if channel_id >= channels.len() { return; }
 371                                 channels.sort_by(|a, b| { a.channel_id.cmp(&b.channel_id) });
 372                                 if channelmanager.close_channel(&channels[channel_id].channel_id).is_err() { return; }
 373                         },
 374                         7 => {
 375                                 if should_forward {
 376                                         channelmanager.process_pending_htlc_forwards();
 377                                         should_forward = false;
 378                                 }
 379                         },
 380                         8 => {
 381                                 for payment in payments_received.drain(..) {
 382                                         // SHA256 is defined as XOR of all input bytes placed in the first byte, and 0s
 383                                         // for the remaining bytes. Thus, if not all remaining bytes are 0s we cannot
 384                                         // fulfill this HTLC, but if they are, we can just take the first byte and
 385                                         // place that anywhere in our preimage.
 386                                         if &payment[1..] != &[0; 31] {
 387                                                 channelmanager.fail_htlc_backwards(&payment, PaymentFailReason::PreimageUnknown);
 388                                         } else {
 389                                                 let mut payment_preimage = [0; 32];
 390                                                 payment_preimage[0] = payment[0];
 391                                                 channelmanager.claim_funds(payment_preimage);
 392                                         }
 393                                 }
 394                         },
 395                         9 => {
 396                                 for payment in payments_received.drain(..) {
 397                                         channelmanager.fail_htlc_backwards(&payment, PaymentFailReason::PreimageUnknown);
 398                                 }
 399                         },
 400                         10 => {
 401                                 for funding_generation in pending_funding_generation.drain(..) {
 402                                         let mut tx = Transaction { version: 0, lock_time: 0, input: Vec::new(), output: vec![TxOut {
 403                                                         value: funding_generation.1, script_pubkey: funding_generation.2,
 404                                                 }] };
 405                                         let funding_output = OutPoint::new(Sha256dHash::from_data(&serialize(&tx).unwrap()[..]), 0);
 406                                         let mut found_duplicate_txo = false;
 407                                         for chan in channelmanager.list_channels() {
 408                                                 if chan.channel_id == funding_output.to_channel_id() {
 409                                                         found_duplicate_txo = true;
 410                                                 }
 411                                         }
 412                                         if !found_duplicate_txo {
 413                                                 channelmanager.funding_transaction_generated(&funding_generation.0, funding_output.clone());
 414                                                 pending_funding_signatures.insert(funding_output, tx);
 415                                         }
 416                                 }
 417                         },
 418                         11 => {
 419                                 if !pending_funding_relay.is_empty() {
 420                                         let mut txn = Vec::with_capacity(pending_funding_relay.len());
 421                                         let mut txn_idxs = Vec::with_capacity(pending_funding_relay.len());
 422                                         for (idx, tx) in pending_funding_relay.iter().enumerate() {
 423                                                 txn.push(tx);
 424                                                 txn_idxs.push(idx as u32 + 1);
 425                                         }
 426
 427                                         loss_detector.connect_block(&txn[..], &txn_idxs[..]);
 428                                         txn_idxs.clear();
 429                                         for _ in 2..100 {
 430                                                 loss_detector.connect_block(&txn[..], &txn_idxs[..]);
 431                                         }
 432                                 }
 433                                 for tx in pending_funding_relay.drain(..) {
 434                                         loss_detector.funding_txn.push(tx);
 435                                 }
 436                         },
 437                         12 => {
 438                                 let txlen = slice_to_be16(get_slice!(2));
 439                                 if txlen == 0 {
 440                                         loss_detector.connect_block(&[], &[]);
 441                                 } else {
 442                                         let txres: Result<Transaction, _> = deserialize(get_slice!(txlen));
 443                                         if let Ok(tx) = txres {
 444                                                 loss_detector.connect_block(&[&tx], &[1]);
 445                                         } else {
 446                                                 return;
 447                                         }
 448                                 }
 449                         },
 450                         13 => {
 451                                 loss_detector.disconnect_block();
 452                         },
 453                         14 => {
 454                                 let mut channels = channelmanager.list_channels();
 455                                 let channel_id = get_slice!(1)[0] as usize;
 456                                 if channel_id >= channels.len() { return; }
 457                                 channels.sort_by(|a, b| { a.channel_id.cmp(&b.channel_id) });
 458                                 channelmanager.force_close_channel(&channels[channel_id].channel_id);
 459                         },
 460                         _ => return,
 461                 }
 462                 loss_detector.handler.process_events();
 463                 for event in loss_detector.manager.get_and_clear_pending_events() {
 464                         match event {
 465                                 Event::FundingGenerationReady { temporary_channel_id, channel_value_satoshis, output_script, .. } => {
 466                                         pending_funding_generation.push((temporary_channel_id, channel_value_satoshis, output_script));
 467                                 },
 468                                 Event::FundingBroadcastSafe { funding_txo, .. } => {
 469                                         pending_funding_relay.push(pending_funding_signatures.remove(&funding_txo).unwrap());
 470                                 },
 471                                 Event::PaymentReceived { payment_hash, .. } => {
 472                                         payments_received.push(payment_hash);
 473                                 },
 474                                 Event::PaymentSent {..} => {},
 475                                 Event::PaymentFailed {..} => {},
 476                                 Event::PendingHTLCsForwardable {..} => {
 477                                         should_forward = true;
 478                                 },
 479                                 Event::SpendableOutputs {..} => {},
 480                         }
 481                 }
 482         }
 483 }
 484
 485 #[cfg(feature = "afl")]
 486 #[macro_use] extern crate afl;
 487 #[cfg(feature = "afl")]
 488 fn main() {
 489         fuzz!(|data| {
 490                 let logger: Arc<Logger> = Arc::new(test_logger::TestLogger{});
 491                 do_test(data, &logger);
 492         });
 493 }
 494
 495 #[cfg(feature = "honggfuzz")]
 496 #[macro_use] extern crate honggfuzz;
 497 #[cfg(feature = "honggfuzz")]
 498 fn main() {
 499         loop {
 500                 fuzz!(|data| {
 501                         let logger: Arc<Logger> = Arc::new(test_logger::TestLogger{});
 502                         do_test(data, &logger);
 503                 });
 504         }
 505 }
 506
 507 extern crate hex;
 508 #[cfg(test)]
 509 mod tests {
 510         use utils::test_logger;
 511         use lightning::util::logger::{Logger, Record};
 512         use std::collections::HashMap;
 513         use std::sync::{Arc, Mutex};
 514
 515         #[test]
 516         fn duplicate_crash() {
 517                 let logger: Arc<Logger> = Arc::new(test_logger::TestLogger{});
 518                 super::do_test(&::hex::decode("00").unwrap(), &logger);
 519         }
 520
 521         struct TrackingLogger {
 522                 /// (module, message) -> count
 523                 pub lines: Mutex<HashMap<(String, String), usize>>,
 524         }
 525         impl Logger for TrackingLogger {
 526                 fn log(&self, record: &Record) {
 527                         *self.lines.lock().unwrap().entry((record.module_path.to_string(), format!("{}", record.args))).or_insert(0) += 1;
 528                         println!("{:<5} [{} : {}, {}] {}", record.level.to_string(), record.module_path, record.file, record.line, record.args);
 529                 }
 530         }
 531
 532         #[test]
 533         fn test_no_existing_test_breakage() {
 534                 // To avoid accidentally causing all existing fuzz test cases to be useless by making minor
 535                 // changes (such as requesting feerate info in a new place), we run a pretty full
 536                 // step-through with two peers and HTLC forwarding here. Obviously this is pretty finicky,
 537                 // so this should be updated pretty liberally, but at least we'll know when changes occur.
 538                 // If nothing else, this test serves as a pretty great initial full_stack_target seed.
 539
 540                 // What each byte represents is broken down below, and then everything is concatenated into
 541                 // one large test at the end (you want %s/ -.*//g %s/\n\| \|\t\|\///g).
 542
 543                 // 0000000000000000000000000000000000000000000000000000000000000000 - our network key
 544                 // 00000000 - fee_proportional_millionths
 545                 // 01 - announce_channels_publicly
 546                 //
 547                 // 00 - new outbound connection with id 0
 548                 // 030000000000000000000000000000000000000000000000000000000000000000 - peer's pubkey
 549                 // 030032 - inbound read from peer id 0 of len 50
 550                 // 00 030000000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - noise act two (0||pubkey||mac)
 551                 //
 552                 // 030012 - inbound read from peer id 0 of len 18
 553                 // 0006 03000000000000000000000000000000 - message header indicating message length 6
 554                 // 030016 - inbound read from peer id 0 of len 22
 555                 // 0010 00000000 03000000000000000000000000000000 - init message with no features (type 16)
 556                 //
 557                 // 030012 - inbound read from peer id 0 of len 18
 558                 // 0141 03000000000000000000000000000000 - message header indicating message length 321
 559                 // 0300fe - inbound read from peer id 0 of len 254
 560                 // 0020 7500000000000000000000000000000000000000000000000000000000000000 ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679 000000000000c350 0000000000000000 0000000000000222 ffffffffffffffff 0000000000000222 0000000000000000 000000fd 0006 01e3 030000000000000000000000000000000000000000000000000000000000000001 030000000000000000000000000000000000000000000000000000000000000002 030000000000000000000000000000000000000000000000000000000000000003 030000000000000000000000000000000000000000000000000000000000000004 - beginning of open_channel message
 561                 // 030053 - inbound read from peer id 0 of len 83
 562                 // 030000000000000000000000000000000000000000000000000000000000000005 030000000000000000000000000000000000000000000000000000000000000000 01 03000000000000000000000000000000 - rest of open_channel and mac
 563                 //
 564                 // 00fd00fd00fd - Three feerate requests (all returning min feerate, which our open_channel also uses)
 565                 // - client should now respond with accept_channel (CHECK 1: type 33 to peer 03000000)
 566                 //
 567                 // 030012 - inbound read from peer id 0 of len 18
 568                 // 0084 03000000000000000000000000000000 - message header indicating message length 132
 569                 // 030094 - inbound read from peer id 0 of len 148
 570                 // 0022 ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679 3d00000000000000000000000000000000000000000000000000000000000000 0000 36000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 03000000000000000000000000000000 - funding_created and mac
 571                 // - client should now respond with funding_signed (CHECK 2: type 35 to peer 03000000)
 572                 //
 573                 // 0c005e - connect a block with one transaction of len 94
 574                 // 020000000100000000000000000000000000000000000000000000000000000000000000000000000000ffffffff0150c3000000000000220020ae0000000000000000000000000000000000000000000000000000000000000000000000 - the funding transaction
 575                 // 0c0000 - connect a block with no transactions
 576                 // 0c0000 - connect a block with no transactions
 577                 // 0c0000 - connect a block with no transactions
 578                 // 0c0000 - connect a block with no transactions
 579                 // 0c0000 - connect a block with no transactions
 580                 // 0c0000 - connect a block with no transactions
 581                 // 0c0000 - connect a block with no transactions
 582                 // 0c0000 - connect a block with no transactions
 583                 // 0c0000 - connect a block with no transactions
 584                 // 0c0000 - connect a block with no transactions
 585                 // 0c0000 - connect a block with no transactions
 586                 // 0c0000 - connect a block with no transactions
 587                 // - by now client should have sent a funding_locked (CHECK 3: SendFundingLocked to 03000000 for chan 3d000000)
 588                 //
 589                 // 030012 - inbound read from peer id 0 of len 18
 590                 // 0043 03000000000000000000000000000000 - message header indicating message length 67
 591                 // 030053 - inbound read from peer id 0 of len 83
 592                 // 0024 3d00000000000000000000000000000000000000000000000000000000000000 030100000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - funding_locked and mac
 593                 //
 594                 // 01 - new inbound connection with id 1
 595                 // 030132 - inbound read from peer id 1 of len 50
 596                 // 0003000000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000 - inbound noise act 1
 597                 // 030142 - inbound read from peer id 1 of len 66
 598                 // 000302000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000003000000000000000000000000000000 - inbound noise act 3
 599                 //
 600                 // 030112 - inbound read from peer id 1 of len 18
 601                 // 0006 01000000000000000000000000000000 - message header indicating message length 6
 602                 // 030116 - inbound read from peer id 1 of len 22
 603                 // 0010 00000000 01000000000000000000000000000000 - init message with no features (type 16)
 604                 //
 605                 // 05 01 030200000000000000000000000000000000000000000000000000000000000000 00c350 0003e8 - create outbound channel to peer 1 for 50k sat
 606                 // 00fd00fd00fd - Three feerate requests (all returning min feerate)
 607                 //
 608                 // 030112 - inbound read from peer id 1 of len 18
 609                 // 0110 01000000000000000000000000000000 - message header indicating message length 272
 610                 // 0301ff - inbound read from peer id 1 of len 255
 611                 // 0021 0200000000000000020000000000000002000000000000000200000000000000 000000000000001a 00000000004c4b40 00000000000003e8 00000000000003e8 00000002 03f0 0005 030000000000000000000000000000000000000000000000000000000000000100 030000000000000000000000000000000000000000000000000000000000000200 030000000000000000000000000000000000000000000000000000000000000300 030000000000000000000000000000000000000000000000000000000000000400 030000000000000000000000000000000000000000000000000000000000000500 03000000000000000000000000000000 - beginning of accept_channel
 612                 // 030121 - inbound read from peer id 1 of len 33
 613                 // 0000000000000000000000000000000000 01000000000000000000000000000000 - rest of accept_channel and mac
 614                 //
 615                 // 0a - create the funding transaction (client should send funding_created now)
 616                 //
 617                 // 030112 - inbound read from peer id 1 of len 18
 618                 // 0062 01000000000000000000000000000000 - message header indicating message length 98
 619                 // 030172 - inbound read from peer id 1 of len 114
 620                 // 0023 3f00000000000000000000000000000000000000000000000000000000000000f6000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 01000000000000000000000000000000 - funding_signed message and mac
 621                 //
 622                 // 0b - broadcast funding transaction
 623                 // - by now client should have sent a funding_locked (CHECK 4: SendFundingLocked to 03020000 for chan 3f000000)
 624                 //
 625                 // 030112 - inbound read from peer id 1 of len 18
 626                 // 0043 01000000000000000000000000000000 - message header indicating message length 67
 627                 // 030153 - inbound read from peer id 1 of len 83
 628                 // 0024 3f00000000000000000000000000000000000000000000000000000000000000 030100000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - funding_locked and mac
 629                 //
 630                 // 030012 - inbound read from peer id 0 of len 18
 631                 // 05ac 03000000000000000000000000000000 - message header indicating message length 1452
 632                 // 0300ff - inbound read from peer id 0 of len 255
 633                 // 0080 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000000 0000000000003e80 ff00000000000000000000000000000000000000000000000000000000000000 00000121 00 030000000000000000000000000000000000000000000000000000000000000555 0000000e000001000000000000000003e8000000010000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff - beginning of update_add_htlc from 0 to 1 via client
 634                 // 0300ff - inbound read from peer id 0 of len 255
 635                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 636                 // 0300ff - inbound read from peer id 0 of len 255
 637                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 638                 // 0300ff - inbound read from peer id 0 of len 255
 639                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 640                 // 0300ff - inbound read from peer id 0 of len 255
 641                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 642                 // 0300c1 - inbound read from peer id 0 of len 193
 643                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ef00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - end of update_add_htlc from 0 to 1 via client and mac
 644                 //
 645                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses)
 646                 //
 647                 // 030012 - inbound read from peer id 0 of len 18
 648                 // 0064 03000000000000000000000000000000 - message header indicating message length 100
 649                 // 030074 - inbound read from peer id 0 of len 116
 650                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 27000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 0000 03000000000000000000000000000000 - commitment_signed and mac
 651                 // - client should now respond with revoke_and_ack and commitment_signed (CHECK 5/6: types 133 and 132 to peer 03000000)
 652                 //
 653                 // 030012 - inbound read from peer id 0 of len 18
 654                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 655                 // 030073 - inbound read from peer id 0 of len 115
 656                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 030200000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 657                 //
 658                 // 07 - process the now-pending HTLC forward
 659                 // - client now sends id 1 update_add_htlc and commitment_signed (CHECK 7: SendHTLCs event for node 03020000 with 1 HTLCs for channel 3f000000)
 660                 //
 661                 // - we respond with commitment_signed then revoke_and_ack (a weird, but valid, order)
 662                 // 030112 - inbound read from peer id 1 of len 18
 663                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 664                 // 030174 - inbound read from peer id 1 of len 116
 665                 // 0084 3f00000000000000000000000000000000000000000000000000000000000000 f7000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 0000 01000000000000000000000000000000 - commitment_signed and mac
 666                 //
 667                 // 030112 - inbound read from peer id 1 of len 18
 668                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 669                 // 030173 - inbound read from peer id 1 of len 115
 670                 // 0085 3f00000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 030200000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 671                 //
 672                 // 030112 - inbound read from peer id 1 of len 18
 673                 // 004a 01000000000000000000000000000000 - message header indicating message length 74
 674                 // 03015a - inbound read from peer id 1 of len 90
 675                 // 0082 3f00000000000000000000000000000000000000000000000000000000000000 0000000000000000 ff00888888888888888888888888888888888888888888888888888888888888 01000000000000000000000000000000 - update_fulfill_htlc and mac
 676                 // - client should immediately claim the pending HTLC from peer 0 (CHECK 8: SendFulfillHTLCs for node 03000000 with preimage ff00888888 for channel 3d000000)
 677                 //
 678                 // 030112 - inbound read from peer id 1 of len 18
 679                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 680                 // 030174 - inbound read from peer id 1 of len 116
 681                 // 0084 3f00000000000000000000000000000000000000000000000000000000000000 fb000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 0000 01000000000000000000000000000000 - commitment_signed and mac
 682                 //
 683                 // 030112 - inbound read from peer id 1 of len 18
 684                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 685                 // 030173 - inbound read from peer id 1 of len 115
 686                 // 0085 3f00000000000000000000000000000000000000000000000000000000000000 0100000000000000000000000000000000000000000000000000000000000000 030300000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 687                 //
 688                 // - before responding to the commitment_signed generated above, send a new HTLC
 689                 // 030012 - inbound read from peer id 0 of len 18
 690                 // 05ac 03000000000000000000000000000000 - message header indicating message length 1452
 691                 // 0300ff - inbound read from peer id 0 of len 255
 692                 // 0080 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000001 0000000000003e80 ff00000000000000000000000000000000000000000000000000000000000000 00000121 00 030000000000000000000000000000000000000000000000000000000000000555 0000000e000001000000000000000003e8000000010000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff - beginning of update_add_htlc from 0 to 1 via client
 693                 // 0300ff - inbound read from peer id 0 of len 255
 694                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 695                 // 0300ff - inbound read from peer id 0 of len 255
 696                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 697                 // 0300ff - inbound read from peer id 0 of len 255
 698                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 699                 // 0300ff - inbound read from peer id 0 of len 255
 700                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 701                 // 0300c1 - inbound read from peer id 0 of len 193
 702                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ef00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - end of update_add_htlc from 0 to 1 via client and mac
 703                 //
 704                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses)
 705                 //
 706                 // - now respond to the update_fulfill_htlc+commitment_signed messages the client sent to peer 0
 707                 // 030012 - inbound read from peer id 0 of len 18
 708                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 709                 // 030073 - inbound read from peer id 0 of len 115
 710                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0100000000000000000000000000000000000000000000000000000000000000 030300000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 711                 // - client should now respond with revoke_and_ack and commitment_signed (CHECK 5/6 duplicates)
 712                 //
 713                 // 030012 - inbound read from peer id 0 of len 18
 714                 // 0064 03000000000000000000000000000000 - message header indicating message length 100
 715                 // 030074 - inbound read from peer id 0 of len 116
 716                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 d4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 0000 03000000000000000000000000000000 - commitment_signed and mac
 717                 //
 718                 // 030012 - inbound read from peer id 0 of len 18
 719                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 720                 // 030073 - inbound read from peer id 0 of len 115
 721                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0200000000000000000000000000000000000000000000000000000000000000 030400000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 722                 //
 723                 // 07 - process the now-pending HTLC forward
 724                 // - client now sends id 1 update_add_htlc and commitment_signed (CHECK 7 duplicate)
 725                 // - we respond with revoke_and_ack, then commitment_signed, then update_fail_htlc
 726                 //
 727                 // 030112 - inbound read from peer id 1 of len 18
 728                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 729                 // 030174 - inbound read from peer id 1 of len 116
 730                 // 0084 3f00000000000000000000000000000000000000000000000000000000000000 fa000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 0000 01000000000000000000000000000000 - commitment_signed and mac
 731                 //
 732                 // 030112 - inbound read from peer id 1 of len 18
 733                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 734                 // 030173 - inbound read from peer id 1 of len 115
 735                 // 0085 3f00000000000000000000000000000000000000000000000000000000000000 0200000000000000000000000000000000000000000000000000000000000000 030400000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 736                 //
 737                 // 030112 - inbound read from peer id 1 of len 18
 738                 // 002c 01000000000000000000000000000000 - message header indicating message length 44
 739                 // 03013c - inbound read from peer id 1 of len 60
 740                 // 0083 3f00000000000000000000000000000000000000000000000000000000000000 0000000000000001 0000 01000000000000000000000000000000 - update_fail_htlc and mac
 741                 //
 742                 // 030112 - inbound read from peer id 1 of len 18
 743                 // 0064 01000000000000000000000000000000 - message header indicating message length 100
 744                 // 030174 - inbound read from peer id 1 of len 116
 745                 // 0084 3f00000000000000000000000000000000000000000000000000000000000000 fd000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100 0000 01000000000000000000000000000000 - commitment_signed and mac
 746                 //
 747                 // 030112 - inbound read from peer id 1 of len 18
 748                 // 0063 01000000000000000000000000000000 - message header indicating message length 99
 749                 // 030173 - inbound read from peer id 1 of len 115
 750                 // 0085 3f00000000000000000000000000000000000000000000000000000000000000 0300000000000000000000000000000000000000000000000000000000000000 030500000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
 751                 //
 752                 // - client now sends id 0 update_fail_htlc and commitment_signed (CHECK 9)
 753                 // - now respond to the update_fail_htlc+commitment_signed messages the client sent to peer 0
 754                 // 030012 - inbound read from peer id 0 of len 18
 755                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 756                 // 030073 - inbound read from peer id 0 of len 115
 757                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0300000000000000000000000000000000000000000000000000000000000000 030500000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 758                 //
 759                 // 030012 - inbound read from peer id 0 of len 18
 760                 // 0064 03000000000000000000000000000000 - message header indicating message length 100
 761                 // 030074 - inbound read from peer id 0 of len 116
 762                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 25000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 0000 03000000000000000000000000000000 - commitment_signed and mac
 763                 // - client should now respond with revoke_and_ack (CHECK 5 duplicate)
 764                 //
 765                 // 030012 - inbound read from peer id 0 of len 18
 766                 // 05ac 03000000000000000000000000000000 - message header indicating message length 1452
 767                 // 0300ff - inbound read from peer id 0 of len 255
 768                 // 0080 3d00000000000000000000000000000000000000000000000000000000000000 0000000000000002 000000000003e900 ff00000000000000000000000000000000000000000000000000000000000000 00000121 00 030000000000000000000000000000000000000000000000000000000000000555 0000000e0000010000000000000003e800000000010000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000 ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff - beginning of update_add_htlc from 0 to 1 via client
 769                 // 0300ff - inbound read from peer id 0 of len 255
 770                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 771                 // 0300ff - inbound read from peer id 0 of len 255
 772                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 773                 // 0300ff - inbound read from peer id 0 of len 255
 774                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 775                 // 0300ff - inbound read from peer id 0 of len 255
 776                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
 777                 // 0300c1 - inbound read from peer id 0 of len 193
 778                 // ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff ef00000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - end of update_add_htlc from 0 to 1 via client and mac
 779                 //
 780                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses)
 781                 //
 782                 // 030012 - inbound read from peer id 0 of len 18
 783                 // 00a4 03000000000000000000000000000000 - message header indicating message length 164
 784                 // 0300b4 - inbound read from peer id 0 of len 180
 785                 // 0084 3d00000000000000000000000000000000000000000000000000000000000000 68000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001 0001 0a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d 00000000000000 03000000000000000000000000000000 - commitment_signed and mac
 786                 // - client should now respond with revoke_and_ack and commitment_signed (CHECK 5/6 duplicates)
 787                 //
 788                 // 030012 - inbound read from peer id 0 of len 18
 789                 // 0063 03000000000000000000000000000000 - message header indicating message length 99
 790                 // 030073 - inbound read from peer id 0 of len 115
 791                 // 0085 3d00000000000000000000000000000000000000000000000000000000000000 0400000000000000000000000000000000000000000000000000000000000000 030600000000000000000000000000000000000000000000000000000000000000 03000000000000000000000000000000 - revoke_and_ack and mac
 792                 //
 793                 // 07 - process the now-pending HTLC forward
 794                 // - client now sends id 1 update_add_htlc and commitment_signed (CHECK 7 duplicate)
 795                 //
 796                 // 0c007d - connect a block with one transaction of len 125
 797                 // 02000000013f00000000000000000000000000000000000000000000000000000000000000000000000000000080020001000000000000220020ed000000000000000000000000000000000000000000000000000000000000006cc10000000000001600142b88e0198963bf4c37de498583a3ccdb9d67e97405000020 - the funding transaction
 798                 // 00fd - A feerate request (returning min feerate, which our open_channel also uses)
 799                 // 0c005e - connect a block with one transaction of len 94
 800                 // 0200000001ec00000000000000000000000000000000000000000000000000000000000000000000000000000000014f00000000000000220020f60000000000000000000000000000000000000000000000000000000000000000000000 - the funding transaction
 801
 802                 let logger = Arc::new(TrackingLogger { lines: Mutex::new(HashMap::new()) });
 803                 super::do_test(&::hex::decode("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fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0300ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0300ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0300ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0300c1ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffef000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000000fd03001200a4030000000000000000000000000000000300b400843d000000000000000000000000000000000000000000000000000000000000006800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100010a000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d000000000000000300000000000000000000000000000003001200630300000000000000000000000000000003007300853d00000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000003060000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000070c007d02000000013f00000000000000000000000000000000000000000000000000000000000000000000000000000080020001000000000000220020ed000000000000000000000000000000000000000000000000000000000000006cc10000000000001600142b88e0198963bf4c37de498583a3ccdb9d67e9740500002000fd0c005e0200000001ec00000000000000000000000000000000000000000000000000000000000000000000000000000000014f00000000000000220020f60000000000000000000000000000000000000000000000000000000000000000000000").unwrap(), &(Arc::clone(&logger) as Arc<Logger>));
 804
 805                 let log_entries = logger.lines.lock().unwrap();
 806                 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
 807                 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
 808                 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
 809                 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
 810                 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
 811                 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
 812                 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
 813                 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
 814                 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(&1)); // 9
 815         }
 816 }