_ Git - rust-lightning/blob - lightning/src/util/test_utils.rs

   1 use chain::chaininterface;
   2 use chain::chaininterface::{ConfirmationTarget, ChainError, ChainWatchInterface};
   3 use chain::transaction::OutPoint;
   4 use chain::keysinterface;
   5 use ln::channelmonitor;
   6 use ln::features::{ChannelFeatures, InitFeatures};
   7 use ln::msgs;
   8 use ln::channelmonitor::HTLCUpdate;
   9 use util::enforcing_trait_impls::EnforcingChannelKeys;
  10 use util::events;
  11 use util::logger::{Logger, Level, Record};
  12 use util::ser::{Readable, Writer, Writeable};
  13
  14 use bitcoin::BitcoinHash;
  15 use bitcoin::blockdata::constants::genesis_block;
  16 use bitcoin::blockdata::transaction::Transaction;
  17 use bitcoin::blockdata::script::{Builder, Script};
  18 use bitcoin::blockdata::block::Block;
  19 use bitcoin::blockdata::opcodes;
  20 use bitcoin::network::constants::Network;
  21 use bitcoin::hash_types::{Txid, BlockHash};
  22
  23 use bitcoin::secp256k1::{SecretKey, PublicKey, Secp256k1, Signature};
  24
  25 use std::time::{SystemTime, UNIX_EPOCH};
  26 use std::sync::Mutex;
  27 use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
  28 use std::{cmp, mem};
  29 use std::collections::HashMap;
  30
  31 pub struct TestVecWriter(pub Vec<u8>);
  32 impl Writer for TestVecWriter {
  33         fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
  34                 self.0.extend_from_slice(buf);
  35                 Ok(())
  36         }
  37         fn size_hint(&mut self, size: usize) {
  38                 self.0.reserve_exact(size);
  39         }
  40 }
  41
  42 pub struct TestFeeEstimator {
  43         pub sat_per_kw: u64,
  44 }
  45 impl chaininterface::FeeEstimator for TestFeeEstimator {
  46         fn get_est_sat_per_1000_weight(&self, _confirmation_target: ConfirmationTarget) -> u64 {
  47                 self.sat_per_kw
  48         }
  49 }
  50
  51 pub struct TestChannelMonitor<'a> {
  52         pub added_monitors: Mutex<Vec<(OutPoint, channelmonitor::ChannelMonitor<EnforcingChannelKeys>)>>,
  53         pub latest_monitor_update_id: Mutex<HashMap<[u8; 32], (OutPoint, u64)>>,
  54         pub simple_monitor: channelmonitor::SimpleManyChannelMonitor<OutPoint, EnforcingChannelKeys, &'a chaininterface::BroadcasterInterface, &'a TestFeeEstimator, &'a TestLogger, &'a ChainWatchInterface>,
  55         pub update_ret: Mutex<Result<(), channelmonitor::ChannelMonitorUpdateErr>>,
  56         // If this is set to Some(), after the next return, we'll always return this until update_ret
  57         // is changed:
  58         pub next_update_ret: Mutex<Option<Result<(), channelmonitor::ChannelMonitorUpdateErr>>>,
  59 }
  60 impl<'a> TestChannelMonitor<'a> {
  61         pub fn new(chain_monitor: &'a chaininterface::ChainWatchInterface, broadcaster: &'a chaininterface::BroadcasterInterface, logger: &'a TestLogger, fee_estimator: &'a TestFeeEstimator) -> Self {
  62                 Self {
  63                         added_monitors: Mutex::new(Vec::new()),
  64                         latest_monitor_update_id: Mutex::new(HashMap::new()),
  65                         simple_monitor: channelmonitor::SimpleManyChannelMonitor::new(chain_monitor, broadcaster, logger, fee_estimator),
  66                         update_ret: Mutex::new(Ok(())),
  67                         next_update_ret: Mutex::new(None),
  68                 }
  69         }
  70 }
  71 impl<'a> channelmonitor::ManyChannelMonitor for TestChannelMonitor<'a> {
  72         type Keys = EnforcingChannelKeys;
  73
  74         fn add_monitor(&self, funding_txo: OutPoint, monitor: channelmonitor::ChannelMonitor<EnforcingChannelKeys>) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
  75                 // At every point where we get a monitor update, we should be able to send a useful monitor
  76                 // to a watchtower and disk...
  77                 let mut w = TestVecWriter(Vec::new());
  78                 monitor.write_for_disk(&mut w).unwrap();
  79                 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingChannelKeys>)>::read(
  80                         &mut ::std::io::Cursor::new(&w.0)).unwrap().1;
  81                 assert!(new_monitor == monitor);
  82                 self.latest_monitor_update_id.lock().unwrap().insert(funding_txo.to_channel_id(), (funding_txo, monitor.get_latest_update_id()));
  83                 self.added_monitors.lock().unwrap().push((funding_txo, monitor));
  84                 assert!(self.simple_monitor.add_monitor(funding_txo, new_monitor).is_ok());
  85
  86                 let ret = self.update_ret.lock().unwrap().clone();
  87                 if let Some(next_ret) = self.next_update_ret.lock().unwrap().take() {
  88                         *self.update_ret.lock().unwrap() = next_ret;
  89                 }
  90                 ret
  91         }
  92
  93         fn update_monitor(&self, funding_txo: OutPoint, update: channelmonitor::ChannelMonitorUpdate) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
  94                 // Every monitor update should survive roundtrip
  95                 let mut w = TestVecWriter(Vec::new());
  96                 update.write(&mut w).unwrap();
  97                 assert!(channelmonitor::ChannelMonitorUpdate::read(
  98                                 &mut ::std::io::Cursor::new(&w.0)).unwrap() == update);
  99
 100                 self.latest_monitor_update_id.lock().unwrap().insert(funding_txo.to_channel_id(), (funding_txo, update.update_id));
 101                 assert!(self.simple_monitor.update_monitor(funding_txo, update).is_ok());
 102                 // At every point where we get a monitor update, we should be able to send a useful monitor
 103                 // to a watchtower and disk...
 104                 let monitors = self.simple_monitor.monitors.lock().unwrap();
 105                 let monitor = monitors.get(&funding_txo).unwrap();
 106                 w.0.clear();
 107                 monitor.write_for_disk(&mut w).unwrap();
 108                 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingChannelKeys>)>::read(
 109                                 &mut ::std::io::Cursor::new(&w.0)).unwrap().1;
 110                 assert!(new_monitor == *monitor);
 111                 self.added_monitors.lock().unwrap().push((funding_txo, new_monitor));
 112
 113                 let ret = self.update_ret.lock().unwrap().clone();
 114                 if let Some(next_ret) = self.next_update_ret.lock().unwrap().take() {
 115                         *self.update_ret.lock().unwrap() = next_ret;
 116                 }
 117                 ret
 118         }
 119
 120         fn get_and_clear_pending_htlcs_updated(&self) -> Vec<HTLCUpdate> {
 121                 return self.simple_monitor.get_and_clear_pending_htlcs_updated();
 122         }
 123 }
 124
 125 pub struct TestBroadcaster {
 126         pub txn_broadcasted: Mutex<Vec<Transaction>>,
 127 }
 128 impl chaininterface::BroadcasterInterface for TestBroadcaster {
 129         fn broadcast_transaction(&self, tx: &Transaction) {
 130                 self.txn_broadcasted.lock().unwrap().push(tx.clone());
 131         }
 132 }
 133
 134 pub struct TestChannelMessageHandler {
 135         pub pending_events: Mutex<Vec<events::MessageSendEvent>>,
 136 }
 137
 138 impl TestChannelMessageHandler {
 139         pub fn new() -> Self {
 140                 TestChannelMessageHandler {
 141                         pending_events: Mutex::new(Vec::new()),
 142                 }
 143         }
 144 }
 145
 146 impl msgs::ChannelMessageHandler for TestChannelMessageHandler {
 147         fn handle_open_channel(&self, _their_node_id: &PublicKey, _their_features: InitFeatures, _msg: &msgs::OpenChannel) {}
 148         fn handle_accept_channel(&self, _their_node_id: &PublicKey, _their_features: InitFeatures, _msg: &msgs::AcceptChannel) {}
 149         fn handle_funding_created(&self, _their_node_id: &PublicKey, _msg: &msgs::FundingCreated) {}
 150         fn handle_funding_signed(&self, _their_node_id: &PublicKey, _msg: &msgs::FundingSigned) {}
 151         fn handle_funding_locked(&self, _their_node_id: &PublicKey, _msg: &msgs::FundingLocked) {}
 152         fn handle_shutdown(&self, _their_node_id: &PublicKey, _msg: &msgs::Shutdown) {}
 153         fn handle_closing_signed(&self, _their_node_id: &PublicKey, _msg: &msgs::ClosingSigned) {}
 154         fn handle_update_add_htlc(&self, _their_node_id: &PublicKey, _msg: &msgs::UpdateAddHTLC) {}
 155         fn handle_update_fulfill_htlc(&self, _their_node_id: &PublicKey, _msg: &msgs::UpdateFulfillHTLC) {}
 156         fn handle_update_fail_htlc(&self, _their_node_id: &PublicKey, _msg: &msgs::UpdateFailHTLC) {}
 157         fn handle_update_fail_malformed_htlc(&self, _their_node_id: &PublicKey, _msg: &msgs::UpdateFailMalformedHTLC) {}
 158         fn handle_commitment_signed(&self, _their_node_id: &PublicKey, _msg: &msgs::CommitmentSigned) {}
 159         fn handle_revoke_and_ack(&self, _their_node_id: &PublicKey, _msg: &msgs::RevokeAndACK) {}
 160         fn handle_update_fee(&self, _their_node_id: &PublicKey, _msg: &msgs::UpdateFee) {}
 161         fn handle_announcement_signatures(&self, _their_node_id: &PublicKey, _msg: &msgs::AnnouncementSignatures) {}
 162         fn handle_channel_reestablish(&self, _their_node_id: &PublicKey, _msg: &msgs::ChannelReestablish) {}
 163         fn peer_disconnected(&self, _their_node_id: &PublicKey, _no_connection_possible: bool) {}
 164         fn peer_connected(&self, _their_node_id: &PublicKey, _msg: &msgs::Init) {}
 165         fn handle_error(&self, _their_node_id: &PublicKey, _msg: &msgs::ErrorMessage) {}
 166 }
 167
 168 impl events::MessageSendEventsProvider for TestChannelMessageHandler {
 169         fn get_and_clear_pending_msg_events(&self) -> Vec<events::MessageSendEvent> {
 170                 let mut pending_events = self.pending_events.lock().unwrap();
 171                 let mut ret = Vec::new();
 172                 mem::swap(&mut ret, &mut *pending_events);
 173                 ret
 174         }
 175 }
 176
 177 fn get_dummy_channel_announcement(short_chan_id: u64) -> msgs::ChannelAnnouncement {
 178         use bitcoin::secp256k1::ffi::Signature as FFISignature;
 179         let secp_ctx = Secp256k1::new();
 180         let network = Network::Testnet;
 181         let node_1_privkey = SecretKey::from_slice(&[42; 32]).unwrap();
 182         let node_2_privkey = SecretKey::from_slice(&[41; 32]).unwrap();
 183         let node_1_btckey = SecretKey::from_slice(&[40; 32]).unwrap();
 184         let node_2_btckey = SecretKey::from_slice(&[39; 32]).unwrap();
 185         let unsigned_ann = msgs::UnsignedChannelAnnouncement {
 186                 features: ChannelFeatures::known(),
 187                 chain_hash: genesis_block(network).header.bitcoin_hash(),
 188                 short_channel_id: short_chan_id,
 189                 node_id_1: PublicKey::from_secret_key(&secp_ctx, &node_1_privkey),
 190                 node_id_2: PublicKey::from_secret_key(&secp_ctx, &node_2_privkey),
 191                 bitcoin_key_1: PublicKey::from_secret_key(&secp_ctx, &node_1_btckey),
 192                 bitcoin_key_2: PublicKey::from_secret_key(&secp_ctx, &node_2_btckey),
 193                 excess_data: Vec::new(),
 194         };
 195
 196         msgs::ChannelAnnouncement {
 197                 node_signature_1: Signature::from(FFISignature::new()),
 198                 node_signature_2: Signature::from(FFISignature::new()),
 199                 bitcoin_signature_1: Signature::from(FFISignature::new()),
 200                 bitcoin_signature_2: Signature::from(FFISignature::new()),
 201                 contents: unsigned_ann,
 202         }
 203 }
 204
 205 fn get_dummy_channel_update(short_chan_id: u64) -> msgs::ChannelUpdate {
 206         use bitcoin::secp256k1::ffi::Signature as FFISignature;
 207         let network = Network::Testnet;
 208         msgs::ChannelUpdate {
 209                 signature: Signature::from(FFISignature::new()),
 210                 contents: msgs::UnsignedChannelUpdate {
 211                         chain_hash: genesis_block(network).header.bitcoin_hash(),
 212                         short_channel_id: short_chan_id,
 213                         timestamp: 0,
 214                         flags: 0,
 215                         cltv_expiry_delta: 0,
 216                         htlc_minimum_msat: 0,
 217                         fee_base_msat: 0,
 218                         fee_proportional_millionths: 0,
 219                         excess_data: vec![],
 220                 }
 221         }
 222 }
 223
 224 pub struct TestRoutingMessageHandler {
 225         pub chan_upds_recvd: AtomicUsize,
 226         pub chan_anns_recvd: AtomicUsize,
 227         pub chan_anns_sent: AtomicUsize,
 228         pub request_full_sync: AtomicBool,
 229 }
 230
 231 impl TestRoutingMessageHandler {
 232         pub fn new() -> Self {
 233                 TestRoutingMessageHandler {
 234                         chan_upds_recvd: AtomicUsize::new(0),
 235                         chan_anns_recvd: AtomicUsize::new(0),
 236                         chan_anns_sent: AtomicUsize::new(0),
 237                         request_full_sync: AtomicBool::new(false),
 238                 }
 239         }
 240 }
 241 impl msgs::RoutingMessageHandler for TestRoutingMessageHandler {
 242         fn handle_node_announcement(&self, _msg: &msgs::NodeAnnouncement) -> Result<bool, msgs::LightningError> {
 243                 Err(msgs::LightningError { err: "", action: msgs::ErrorAction::IgnoreError })
 244         }
 245         fn handle_channel_announcement(&self, _msg: &msgs::ChannelAnnouncement) -> Result<bool, msgs::LightningError> {
 246                 self.chan_anns_recvd.fetch_add(1, Ordering::AcqRel);
 247                 Err(msgs::LightningError { err: "", action: msgs::ErrorAction::IgnoreError })
 248         }
 249         fn handle_channel_update(&self, _msg: &msgs::ChannelUpdate) -> Result<bool, msgs::LightningError> {
 250                 self.chan_upds_recvd.fetch_add(1, Ordering::AcqRel);
 251                 Err(msgs::LightningError { err: "", action: msgs::ErrorAction::IgnoreError })
 252         }
 253         fn handle_htlc_fail_channel_update(&self, _update: &msgs::HTLCFailChannelUpdate) {}
 254         fn get_next_channel_announcements(&self, starting_point: u64, batch_amount: u8) -> Vec<(msgs::ChannelAnnouncement, Option<msgs::ChannelUpdate>, Option<msgs::ChannelUpdate>)> {
 255                 let mut chan_anns = Vec::new();
 256                 const TOTAL_UPDS: u64 = 100;
 257                 let end: u64 = cmp::min(starting_point + batch_amount as u64, TOTAL_UPDS - self.chan_anns_sent.load(Ordering::Acquire) as u64);
 258                 for i in starting_point..end {
 259                         let chan_upd_1 = get_dummy_channel_update(i);
 260                         let chan_upd_2 = get_dummy_channel_update(i);
 261                         let chan_ann = get_dummy_channel_announcement(i);
 262
 263                         chan_anns.push((chan_ann, Some(chan_upd_1), Some(chan_upd_2)));
 264                 }
 265
 266                 self.chan_anns_sent.fetch_add(chan_anns.len(), Ordering::AcqRel);
 267                 chan_anns
 268         }
 269
 270         fn get_next_node_announcements(&self, _starting_point: Option<&PublicKey>, _batch_amount: u8) -> Vec<msgs::NodeAnnouncement> {
 271                 Vec::new()
 272         }
 273
 274         fn should_request_full_sync(&self, _node_id: &PublicKey) -> bool {
 275                 self.request_full_sync.load(Ordering::Acquire)
 276         }
 277 }
 278
 279 pub struct TestLogger {
 280         level: Level,
 281         id: String,
 282         pub lines: Mutex<HashMap<(String, String), usize>>,
 283 }
 284
 285 impl TestLogger {
 286         pub fn new() -> TestLogger {
 287                 Self::with_id("".to_owned())
 288         }
 289         pub fn with_id(id: String) -> TestLogger {
 290                 TestLogger {
 291                         level: Level::Trace,
 292                         id,
 293                         lines: Mutex::new(HashMap::new())
 294                 }
 295         }
 296         pub fn enable(&mut self, level: Level) {
 297                 self.level = level;
 298         }
 299         pub fn assert_log(&self, module: String, line: String, count: usize) {
 300                 let log_entries = self.lines.lock().unwrap();
 301                 assert_eq!(log_entries.get(&(module, line)), Some(&count));
 302         }
 303 }
 304
 305 impl Logger for TestLogger {
 306         fn log(&self, record: &Record) {
 307                 *self.lines.lock().unwrap().entry((record.module_path.to_string(), format!("{}", record.args))).or_insert(0) += 1;
 308                 if self.level >= record.level {
 309                         println!("{:<5} {} [{} : {}, {}] {}", record.level.to_string(), self.id, record.module_path, record.file, record.line, record.args);
 310                 }
 311         }
 312 }
 313
 314 pub struct TestKeysInterface {
 315         backing: keysinterface::KeysManager,
 316         pub override_session_priv: Mutex<Option<SecretKey>>,
 317         pub override_channel_id_priv: Mutex<Option<[u8; 32]>>,
 318 }
 319
 320 impl keysinterface::KeysInterface for TestKeysInterface {
 321         type ChanKeySigner = EnforcingChannelKeys;
 322
 323         fn get_node_secret(&self) -> SecretKey { self.backing.get_node_secret() }
 324         fn get_destination_script(&self) -> Script { self.backing.get_destination_script() }
 325         fn get_shutdown_pubkey(&self) -> PublicKey { self.backing.get_shutdown_pubkey() }
 326         fn get_channel_keys(&self, inbound: bool, channel_value_satoshis: u64) -> EnforcingChannelKeys {
 327                 EnforcingChannelKeys::new(self.backing.get_channel_keys(inbound, channel_value_satoshis))
 328         }
 329
 330         fn get_onion_rand(&self) -> (SecretKey, [u8; 32]) {
 331                 match *self.override_session_priv.lock().unwrap() {
 332                         Some(key) => (key.clone(), [0; 32]),
 333                         None => self.backing.get_onion_rand()
 334                 }
 335         }
 336
 337         fn get_channel_id(&self) -> [u8; 32] {
 338                 match *self.override_channel_id_priv.lock().unwrap() {
 339                         Some(key) => key.clone(),
 340                         None => self.backing.get_channel_id()
 341                 }
 342         }
 343 }
 344
 345 impl TestKeysInterface {
 346         pub fn new(seed: &[u8; 32], network: Network) -> Self {
 347                 let now = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time went backwards");
 348                 Self {
 349                         backing: keysinterface::KeysManager::new(seed, network, now.as_secs(), now.subsec_nanos()),
 350                         override_session_priv: Mutex::new(None),
 351                         override_channel_id_priv: Mutex::new(None),
 352                 }
 353         }
 354         pub fn derive_channel_keys(&self, channel_value_satoshis: u64, user_id_1: u64, user_id_2: u64) -> EnforcingChannelKeys {
 355                 EnforcingChannelKeys::new(self.backing.derive_channel_keys(channel_value_satoshis, user_id_1, user_id_2))
 356         }
 357 }
 358
 359 pub struct TestChainWatcher {
 360         pub utxo_ret: Mutex<Result<(Script, u64), ChainError>>,
 361 }
 362
 363 impl TestChainWatcher {
 364         pub fn new() -> Self {
 365                 let script = Builder::new().push_opcode(opcodes::OP_TRUE).into_script();
 366                 Self { utxo_ret: Mutex::new(Ok((script, u64::max_value()))) }
 367         }
 368 }
 369
 370 impl ChainWatchInterface for TestChainWatcher {
 371         fn install_watch_tx(&self, _txid: &Txid, _script_pub_key: &Script) { }
 372         fn install_watch_outpoint(&self, _outpoint: (Txid, u32), _out_script: &Script) { }
 373         fn watch_all_txn(&self) { }
 374         fn filter_block<'a>(&self, _block: &'a Block) -> (Vec<&'a Transaction>, Vec<u32>) {
 375                 (Vec::new(), Vec::new())
 376         }
 377         fn reentered(&self) -> usize { 0 }
 378
 379         fn get_chain_utxo(&self, _genesis_hash: BlockHash, _unspent_tx_output_identifier: u64) -> Result<(Script, u64), ChainError> {
 380                 self.utxo_ret.lock().unwrap().clone()
 381         }
 382 }