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

   1 // This file is Copyright its original authors, visible in version control
   2 // history.
   3 //
   4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
   5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
   7 // You may not use this file except in accordance with one or both of these
   8 // licenses.
   9
  10 use crate::chain;
  11 use crate::chain::WatchedOutput;
  12 use crate::chain::chaininterface;
  13 use crate::chain::chaininterface::ConfirmationTarget;
  14 use crate::chain::chaininterface::FEERATE_FLOOR_SATS_PER_KW;
  15 use crate::chain::chainmonitor;
  16 use crate::chain::chainmonitor::{MonitorUpdateId, UpdateOrigin};
  17 use crate::chain::channelmonitor;
  18 use crate::chain::channelmonitor::MonitorEvent;
  19 use crate::chain::transaction::OutPoint;
  20 use crate::sign;
  21 use crate::events;
  22 use crate::events::bump_transaction::{WalletSource, Utxo};
  23 use crate::ln::ChannelId;
  24 use crate::ln::channelmanager;
  25 use crate::ln::chan_utils::CommitmentTransaction;
  26 use crate::ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
  27 use crate::ln::{msgs, wire};
  28 use crate::ln::msgs::LightningError;
  29 use crate::ln::script::ShutdownScript;
  30 use crate::offers::invoice::UnsignedBolt12Invoice;
  31 use crate::offers::invoice_request::UnsignedInvoiceRequest;
  32 use crate::routing::gossip::{EffectiveCapacity, NetworkGraph, NodeId};
  33 use crate::routing::utxo::{UtxoLookup, UtxoLookupError, UtxoResult};
  34 use crate::routing::router::{find_route, InFlightHtlcs, Path, Route, RouteParameters, Router, ScorerAccountingForInFlightHtlcs};
  35 use crate::routing::scoring::{ChannelUsage, ScoreUpdate, ScoreLookUp};
  36 use crate::sync::RwLock;
  37 use crate::util::config::UserConfig;
  38 use crate::util::test_channel_signer::{TestChannelSigner, EnforcementState};
  39 use crate::util::logger::{Logger, Level, Record};
  40 use crate::util::ser::{Readable, ReadableArgs, Writer, Writeable};
  41 use crate::util::persist::KVStore;
  42
  43 use bitcoin::EcdsaSighashType;
  44 use bitcoin::blockdata::constants::ChainHash;
  45 use bitcoin::blockdata::constants::genesis_block;
  46 use bitcoin::blockdata::transaction::{Transaction, TxOut};
  47 use bitcoin::blockdata::script::{Builder, Script};
  48 use bitcoin::blockdata::opcodes;
  49 use bitcoin::blockdata::block::Block;
  50 use bitcoin::network::constants::Network;
  51 use bitcoin::hash_types::{BlockHash, Txid};
  52 use bitcoin::util::sighash::SighashCache;
  53
  54 use bitcoin::secp256k1::{PublicKey, Scalar, Secp256k1, SecretKey};
  55 use bitcoin::secp256k1::ecdh::SharedSecret;
  56 use bitcoin::secp256k1::ecdsa::{RecoverableSignature, Signature};
  57 use bitcoin::secp256k1::schnorr;
  58
  59 #[cfg(any(test, feature = "_test_utils"))]
  60 use regex;
  61
  62 use crate::io;
  63 use crate::prelude::*;
  64 use core::cell::RefCell;
  65 use core::time::Duration;
  66 use crate::sync::{Mutex, Arc};
  67 use core::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
  68 use core::mem;
  69 use bitcoin::bech32::u5;
  70 use crate::sign::{InMemorySigner, Recipient, EntropySource, NodeSigner, SignerProvider};
  71
  72 #[cfg(feature = "std")]
  73 use std::time::{SystemTime, UNIX_EPOCH};
  74 use bitcoin::Sequence;
  75
  76 pub fn pubkey(byte: u8) -> PublicKey {
  77         let secp_ctx = Secp256k1::new();
  78         PublicKey::from_secret_key(&secp_ctx, &privkey(byte))
  79 }
  80
  81 pub fn privkey(byte: u8) -> SecretKey {
  82         SecretKey::from_slice(&[byte; 32]).unwrap()
  83 }
  84
  85 pub struct TestVecWriter(pub Vec<u8>);
  86 impl Writer for TestVecWriter {
  87         fn write_all(&mut self, buf: &[u8]) -> Result<(), io::Error> {
  88                 self.0.extend_from_slice(buf);
  89                 Ok(())
  90         }
  91 }
  92
  93 pub struct TestFeeEstimator {
  94         pub sat_per_kw: Mutex<u32>,
  95 }
  96 impl chaininterface::FeeEstimator for TestFeeEstimator {
  97         fn get_est_sat_per_1000_weight(&self, _confirmation_target: ConfirmationTarget) -> u32 {
  98                 *self.sat_per_kw.lock().unwrap()
  99         }
 100 }
 101
 102 pub struct TestRouter<'a> {
 103         pub network_graph: Arc<NetworkGraph<&'a TestLogger>>,
 104         pub next_routes: Mutex<VecDeque<(RouteParameters, Result<Route, LightningError>)>>,
 105         pub scorer: &'a RwLock<TestScorer>,
 106 }
 107
 108 impl<'a> TestRouter<'a> {
 109         pub fn new(network_graph: Arc<NetworkGraph<&'a TestLogger>>, scorer: &'a RwLock<TestScorer>) -> Self {
 110                 Self { network_graph, next_routes: Mutex::new(VecDeque::new()), scorer }
 111         }
 112
 113         pub fn expect_find_route(&self, query: RouteParameters, result: Result<Route, LightningError>) {
 114                 let mut expected_routes = self.next_routes.lock().unwrap();
 115                 expected_routes.push_back((query, result));
 116         }
 117 }
 118
 119 impl<'a> Router for TestRouter<'a> {
 120         fn find_route(
 121                 &self, payer: &PublicKey, params: &RouteParameters, first_hops: Option<&[&channelmanager::ChannelDetails]>,
 122                 inflight_htlcs: InFlightHtlcs
 123         ) -> Result<Route, msgs::LightningError> {
 124                 if let Some((find_route_query, find_route_res)) = self.next_routes.lock().unwrap().pop_front() {
 125                         assert_eq!(find_route_query, *params);
 126                         if let Ok(ref route) = find_route_res {
 127                                 assert_eq!(route.route_params.as_ref().unwrap().final_value_msat, find_route_query.final_value_msat);
 128                                 let scorer = self.scorer.read().unwrap();
 129                                 let scorer = ScorerAccountingForInFlightHtlcs::new(scorer, &inflight_htlcs);
 130                                 for path in &route.paths {
 131                                         let mut aggregate_msat = 0u64;
 132                                         for (idx, hop) in path.hops.iter().rev().enumerate() {
 133                                                 aggregate_msat += hop.fee_msat;
 134                                                 let usage = ChannelUsage {
 135                                                         amount_msat: aggregate_msat,
 136                                                         inflight_htlc_msat: 0,
 137                                                         effective_capacity: EffectiveCapacity::Unknown,
 138                                                 };
 139
 140                                                 // Since the path is reversed, the last element in our iteration is the first
 141                                                 // hop.
 142                                                 if idx == path.hops.len() - 1 {
 143                                                         scorer.channel_penalty_msat(hop.short_channel_id, &NodeId::from_pubkey(payer), &NodeId::from_pubkey(&hop.pubkey), usage, &Default::default());
 144                                                 } else {
 145                                                         let curr_hop_path_idx = path.hops.len() - 1 - idx;
 146                                                         scorer.channel_penalty_msat(hop.short_channel_id, &NodeId::from_pubkey(&path.hops[curr_hop_path_idx - 1].pubkey), &NodeId::from_pubkey(&hop.pubkey), usage, &Default::default());
 147                                                 }
 148                                         }
 149                                 }
 150                         }
 151                         return find_route_res;
 152                 }
 153                 let logger = TestLogger::new();
 154                 find_route(
 155                         payer, params, &self.network_graph, first_hops, &logger,
 156                         &ScorerAccountingForInFlightHtlcs::new(self.scorer.read().unwrap(), &inflight_htlcs), &Default::default(),
 157                         &[42; 32]
 158                 )
 159         }
 160 }
 161
 162 impl<'a> Drop for TestRouter<'a> {
 163         fn drop(&mut self) {
 164                 #[cfg(feature = "std")] {
 165                         if std::thread::panicking() {
 166                                 return;
 167                         }
 168                 }
 169                 assert!(self.next_routes.lock().unwrap().is_empty());
 170         }
 171 }
 172
 173 pub struct OnlyReadsKeysInterface {}
 174
 175 impl EntropySource for OnlyReadsKeysInterface {
 176         fn get_secure_random_bytes(&self) -> [u8; 32] { [0; 32] }}
 177
 178 impl SignerProvider for OnlyReadsKeysInterface {
 179         type Signer = TestChannelSigner;
 180
 181         fn generate_channel_keys_id(&self, _inbound: bool, _channel_value_satoshis: u64, _user_channel_id: u128) -> [u8; 32] { unreachable!(); }
 182
 183         fn derive_channel_signer(&self, _channel_value_satoshis: u64, _channel_keys_id: [u8; 32]) -> Self::Signer { unreachable!(); }
 184
 185         fn read_chan_signer(&self, mut reader: &[u8]) -> Result<Self::Signer, msgs::DecodeError> {
 186                 let inner: InMemorySigner = ReadableArgs::read(&mut reader, self)?;
 187                 let state = Arc::new(Mutex::new(EnforcementState::new()));
 188
 189                 Ok(TestChannelSigner::new_with_revoked(
 190                         inner,
 191                         state,
 192                         false
 193                 ))
 194         }
 195
 196         fn get_destination_script(&self) -> Result<Script, ()> { Err(()) }
 197         fn get_shutdown_scriptpubkey(&self) -> Result<ShutdownScript, ()> { Err(()) }
 198 }
 199
 200 pub struct TestChainMonitor<'a> {
 201         pub added_monitors: Mutex<Vec<(OutPoint, channelmonitor::ChannelMonitor<TestChannelSigner>)>>,
 202         pub monitor_updates: Mutex<HashMap<ChannelId, Vec<channelmonitor::ChannelMonitorUpdate>>>,
 203         pub latest_monitor_update_id: Mutex<HashMap<ChannelId, (OutPoint, u64, MonitorUpdateId)>>,
 204         pub chain_monitor: chainmonitor::ChainMonitor<TestChannelSigner, &'a TestChainSource, &'a chaininterface::BroadcasterInterface, &'a TestFeeEstimator, &'a TestLogger, &'a chainmonitor::Persist<TestChannelSigner>>,
 205         pub keys_manager: &'a TestKeysInterface,
 206         /// If this is set to Some(), the next update_channel call (not watch_channel) must be a
 207         /// ChannelForceClosed event for the given channel_id with should_broadcast set to the given
 208         /// boolean.
 209         pub expect_channel_force_closed: Mutex<Option<(ChannelId, bool)>>,
 210         /// If this is set to Some(), the next round trip serialization check will not hold after an
 211         /// update_channel call (not watch_channel) for the given channel_id.
 212         pub expect_monitor_round_trip_fail: Mutex<Option<ChannelId>>,
 213 }
 214 impl<'a> TestChainMonitor<'a> {
 215         pub fn new(chain_source: Option<&'a TestChainSource>, broadcaster: &'a chaininterface::BroadcasterInterface, logger: &'a TestLogger, fee_estimator: &'a TestFeeEstimator, persister: &'a chainmonitor::Persist<TestChannelSigner>, keys_manager: &'a TestKeysInterface) -> Self {
 216                 Self {
 217                         added_monitors: Mutex::new(Vec::new()),
 218                         monitor_updates: Mutex::new(HashMap::new()),
 219                         latest_monitor_update_id: Mutex::new(HashMap::new()),
 220                         chain_monitor: chainmonitor::ChainMonitor::new(chain_source, broadcaster, logger, fee_estimator, persister),
 221                         keys_manager,
 222                         expect_channel_force_closed: Mutex::new(None),
 223                         expect_monitor_round_trip_fail: Mutex::new(None),
 224                 }
 225         }
 226
 227         pub fn complete_sole_pending_chan_update(&self, channel_id: &ChannelId) {
 228                 let (outpoint, _, latest_update) = self.latest_monitor_update_id.lock().unwrap().get(channel_id).unwrap().clone();
 229                 self.chain_monitor.channel_monitor_updated(outpoint, latest_update).unwrap();
 230         }
 231 }
 232 impl<'a> chain::Watch<TestChannelSigner> for TestChainMonitor<'a> {
 233         fn watch_channel(&self, funding_txo: OutPoint, monitor: channelmonitor::ChannelMonitor<TestChannelSigner>) -> Result<chain::ChannelMonitorUpdateStatus, ()> {
 234                 // At every point where we get a monitor update, we should be able to send a useful monitor
 235                 // to a watchtower and disk...
 236                 let mut w = TestVecWriter(Vec::new());
 237                 monitor.write(&mut w).unwrap();
 238                 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<TestChannelSigner>)>::read(
 239                         &mut io::Cursor::new(&w.0), (self.keys_manager, self.keys_manager)).unwrap().1;
 240                 assert!(new_monitor == monitor);
 241                 self.latest_monitor_update_id.lock().unwrap().insert(funding_txo.to_channel_id(),
 242                         (funding_txo, monitor.get_latest_update_id(), MonitorUpdateId::from_new_monitor(&monitor)));
 243                 self.added_monitors.lock().unwrap().push((funding_txo, monitor));
 244                 self.chain_monitor.watch_channel(funding_txo, new_monitor)
 245         }
 246
 247         fn update_channel(&self, funding_txo: OutPoint, update: &channelmonitor::ChannelMonitorUpdate) -> chain::ChannelMonitorUpdateStatus {
 248                 // Every monitor update should survive roundtrip
 249                 let mut w = TestVecWriter(Vec::new());
 250                 update.write(&mut w).unwrap();
 251                 assert!(channelmonitor::ChannelMonitorUpdate::read(
 252                                 &mut io::Cursor::new(&w.0)).unwrap() == *update);
 253
 254                 self.monitor_updates.lock().unwrap().entry(funding_txo.to_channel_id()).or_insert(Vec::new()).push(update.clone());
 255
 256                 if let Some(exp) = self.expect_channel_force_closed.lock().unwrap().take() {
 257                         assert_eq!(funding_txo.to_channel_id(), exp.0);
 258                         assert_eq!(update.updates.len(), 1);
 259                         if let channelmonitor::ChannelMonitorUpdateStep::ChannelForceClosed { should_broadcast } = update.updates[0] {
 260                                 assert_eq!(should_broadcast, exp.1);
 261                         } else { panic!(); }
 262                 }
 263
 264                 self.latest_monitor_update_id.lock().unwrap().insert(funding_txo.to_channel_id(),
 265                         (funding_txo, update.update_id, MonitorUpdateId::from_monitor_update(update)));
 266                 let update_res = self.chain_monitor.update_channel(funding_txo, update);
 267                 // At every point where we get a monitor update, we should be able to send a useful monitor
 268                 // to a watchtower and disk...
 269                 let monitor = self.chain_monitor.get_monitor(funding_txo).unwrap();
 270                 w.0.clear();
 271                 monitor.write(&mut w).unwrap();
 272                 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<TestChannelSigner>)>::read(
 273                         &mut io::Cursor::new(&w.0), (self.keys_manager, self.keys_manager)).unwrap().1;
 274                 if let Some(chan_id) = self.expect_monitor_round_trip_fail.lock().unwrap().take() {
 275                         assert_eq!(chan_id, funding_txo.to_channel_id());
 276                         assert!(new_monitor != *monitor);
 277                 } else {
 278                         assert!(new_monitor == *monitor);
 279                 }
 280                 self.added_monitors.lock().unwrap().push((funding_txo, new_monitor));
 281                 update_res
 282         }
 283
 284         fn release_pending_monitor_events(&self) -> Vec<(OutPoint, Vec<MonitorEvent>, Option<PublicKey>)> {
 285                 return self.chain_monitor.release_pending_monitor_events();
 286         }
 287 }
 288
 289 struct JusticeTxData {
 290         justice_tx: Transaction,
 291         value: u64,
 292         commitment_number: u64,
 293 }
 294
 295 pub(crate) struct WatchtowerPersister {
 296         persister: TestPersister,
 297         /// Upon a new commitment_signed, we'll get a
 298         /// ChannelMonitorUpdateStep::LatestCounterpartyCommitmentTxInfo. We'll store the justice tx
 299         /// amount, and commitment number so we can build the justice tx after our counterparty
 300         /// revokes it.
 301         unsigned_justice_tx_data: Mutex<HashMap<OutPoint, VecDeque<JusticeTxData>>>,
 302         /// After receiving a revoke_and_ack for a commitment number, we'll form and store the justice
 303         /// tx which would be used to provide a watchtower with the data it needs.
 304         watchtower_state: Mutex<HashMap<OutPoint, HashMap<Txid, Transaction>>>,
 305         destination_script: Script,
 306 }
 307
 308 impl WatchtowerPersister {
 309         #[cfg(test)]
 310         pub(crate) fn new(destination_script: Script) -> Self {
 311                 WatchtowerPersister {
 312                         persister: TestPersister::new(),
 313                         unsigned_justice_tx_data: Mutex::new(HashMap::new()),
 314                         watchtower_state: Mutex::new(HashMap::new()),
 315                         destination_script,
 316                 }
 317         }
 318
 319         #[cfg(test)]
 320         pub(crate) fn justice_tx(&self, funding_txo: OutPoint, commitment_txid: &Txid)
 321         -> Option<Transaction> {
 322                 self.watchtower_state.lock().unwrap().get(&funding_txo).unwrap().get(commitment_txid).cloned()
 323         }
 324
 325         fn form_justice_data_from_commitment(&self, counterparty_commitment_tx: &CommitmentTransaction)
 326         -> Option<JusticeTxData> {
 327                 let trusted_tx = counterparty_commitment_tx.trust();
 328                 let output_idx = trusted_tx.revokeable_output_index()?;
 329                 let built_tx = trusted_tx.built_transaction();
 330                 let value = built_tx.transaction.output[output_idx as usize].value;
 331                 let justice_tx = trusted_tx.build_to_local_justice_tx(
 332                         FEERATE_FLOOR_SATS_PER_KW as u64, self.destination_script.clone()).ok()?;
 333                 let commitment_number = counterparty_commitment_tx.commitment_number();
 334                 Some(JusticeTxData { justice_tx, value, commitment_number })
 335         }
 336 }
 337
 338 impl<Signer: sign::WriteableEcdsaChannelSigner> chainmonitor::Persist<Signer> for WatchtowerPersister {
 339         fn persist_new_channel(&self, funding_txo: OutPoint,
 340                 data: &channelmonitor::ChannelMonitor<Signer>, id: MonitorUpdateId
 341         ) -> chain::ChannelMonitorUpdateStatus {
 342                 let res = self.persister.persist_new_channel(funding_txo, data, id);
 343
 344                 assert!(self.unsigned_justice_tx_data.lock().unwrap()
 345                         .insert(funding_txo, VecDeque::new()).is_none());
 346                 assert!(self.watchtower_state.lock().unwrap()
 347                         .insert(funding_txo, HashMap::new()).is_none());
 348
 349                 let initial_counterparty_commitment_tx = data.initial_counterparty_commitment_tx()
 350                         .expect("First and only call expects Some");
 351                 if let Some(justice_data)
 352                         = self.form_justice_data_from_commitment(&initial_counterparty_commitment_tx) {
 353                         self.unsigned_justice_tx_data.lock().unwrap()
 354                                 .get_mut(&funding_txo).unwrap()
 355                                 .push_back(justice_data);
 356                 }
 357                 res
 358         }
 359
 360         fn update_persisted_channel(
 361                 &self, funding_txo: OutPoint, update: Option<&channelmonitor::ChannelMonitorUpdate>,
 362                 data: &channelmonitor::ChannelMonitor<Signer>, update_id: MonitorUpdateId
 363         ) -> chain::ChannelMonitorUpdateStatus {
 364                 let res = self.persister.update_persisted_channel(funding_txo, update, data, update_id);
 365
 366                 if let Some(update) = update {
 367                         let commitment_txs = data.counterparty_commitment_txs_from_update(update);
 368                         let justice_datas = commitment_txs.into_iter()
 369                                 .filter_map(|commitment_tx| self.form_justice_data_from_commitment(&commitment_tx));
 370                         let mut channels_justice_txs = self.unsigned_justice_tx_data.lock().unwrap();
 371                         let channel_state = channels_justice_txs.get_mut(&funding_txo).unwrap();
 372                         channel_state.extend(justice_datas);
 373
 374                         while let Some(JusticeTxData { justice_tx, value, commitment_number }) = channel_state.front() {
 375                                 let input_idx = 0;
 376                                 let commitment_txid = justice_tx.input[input_idx].previous_output.txid;
 377                                 match data.sign_to_local_justice_tx(justice_tx.clone(), input_idx, *value, *commitment_number) {
 378                                         Ok(signed_justice_tx) => {
 379                                                 let dup = self.watchtower_state.lock().unwrap()
 380                                                         .get_mut(&funding_txo).unwrap()
 381                                                         .insert(commitment_txid, signed_justice_tx);
 382                                                 assert!(dup.is_none());
 383                                                 channel_state.pop_front();
 384                                         },
 385                                         Err(_) => break,
 386                                 }
 387                         }
 388                 }
 389                 res
 390         }
 391 }
 392
 393 pub struct TestPersister {
 394         /// The queue of update statuses we'll return. If none are queued, ::Completed will always be
 395         /// returned.
 396         pub update_rets: Mutex<VecDeque<chain::ChannelMonitorUpdateStatus>>,
 397         /// When we get an update_persisted_channel call with no ChannelMonitorUpdate, we insert the
 398         /// MonitorUpdateId here.
 399         pub chain_sync_monitor_persistences: Mutex<HashMap<OutPoint, HashSet<MonitorUpdateId>>>,
 400         /// When we get an update_persisted_channel call *with* a ChannelMonitorUpdate, we insert the
 401         /// MonitorUpdateId here.
 402         pub offchain_monitor_updates: Mutex<HashMap<OutPoint, HashSet<MonitorUpdateId>>>,
 403 }
 404 impl TestPersister {
 405         pub fn new() -> Self {
 406                 Self {
 407                         update_rets: Mutex::new(VecDeque::new()),
 408                         chain_sync_monitor_persistences: Mutex::new(HashMap::new()),
 409                         offchain_monitor_updates: Mutex::new(HashMap::new()),
 410                 }
 411         }
 412
 413         /// Queue an update status to return.
 414         pub fn set_update_ret(&self, next_ret: chain::ChannelMonitorUpdateStatus) {
 415                 self.update_rets.lock().unwrap().push_back(next_ret);
 416         }
 417 }
 418 impl<Signer: sign::WriteableEcdsaChannelSigner> chainmonitor::Persist<Signer> for TestPersister {
 419         fn persist_new_channel(&self, _funding_txo: OutPoint, _data: &channelmonitor::ChannelMonitor<Signer>, _id: MonitorUpdateId) -> chain::ChannelMonitorUpdateStatus {
 420                 if let Some(update_ret) = self.update_rets.lock().unwrap().pop_front() {
 421                         return update_ret
 422                 }
 423                 chain::ChannelMonitorUpdateStatus::Completed
 424         }
 425
 426         fn update_persisted_channel(&self, funding_txo: OutPoint, update: Option<&channelmonitor::ChannelMonitorUpdate>, _data: &channelmonitor::ChannelMonitor<Signer>, update_id: MonitorUpdateId) -> chain::ChannelMonitorUpdateStatus {
 427                 let mut ret = chain::ChannelMonitorUpdateStatus::Completed;
 428                 if let Some(update_ret) = self.update_rets.lock().unwrap().pop_front() {
 429                         ret = update_ret;
 430                 }
 431                 let is_chain_sync = if let UpdateOrigin::ChainSync(_) = update_id.contents { true } else { false };
 432                 if is_chain_sync {
 433                         self.chain_sync_monitor_persistences.lock().unwrap().entry(funding_txo).or_insert(HashSet::new()).insert(update_id);
 434                 } else {
 435                         self.offchain_monitor_updates.lock().unwrap().entry(funding_txo).or_insert(HashSet::new()).insert(update_id);
 436                 }
 437                 ret
 438         }
 439 }
 440
 441 pub struct TestStore {
 442         persisted_bytes: Mutex<HashMap<String, HashMap<String, Vec<u8>>>>,
 443         read_only: bool,
 444 }
 445
 446 impl TestStore {
 447         pub fn new(read_only: bool) -> Self {
 448                 let persisted_bytes = Mutex::new(HashMap::new());
 449                 Self { persisted_bytes, read_only }
 450         }
 451 }
 452
 453 impl KVStore for TestStore {
 454         fn read(&self, primary_namespace: &str, secondary_namespace: &str, key: &str) -> io::Result<Vec<u8>> {
 455                 let persisted_lock = self.persisted_bytes.lock().unwrap();
 456                 let prefixed = if secondary_namespace.is_empty() {
 457                         primary_namespace.to_string()
 458                 } else {
 459                         format!("{}/{}", primary_namespace, secondary_namespace)
 460                 };
 461
 462                 if let Some(outer_ref) = persisted_lock.get(&prefixed) {
 463                         if let Some(inner_ref) = outer_ref.get(key) {
 464                                 let bytes = inner_ref.clone();
 465                                 Ok(bytes)
 466                         } else {
 467                                 Err(io::Error::new(io::ErrorKind::NotFound, "Key not found"))
 468                         }
 469                 } else {
 470                         Err(io::Error::new(io::ErrorKind::NotFound, "Namespace not found"))
 471                 }
 472         }
 473
 474         fn write(&self, primary_namespace: &str, secondary_namespace: &str, key: &str, buf: &[u8]) -> io::Result<()> {
 475                 if self.read_only {
 476                         return Err(io::Error::new(
 477                                 io::ErrorKind::PermissionDenied,
 478                                 "Cannot modify read-only store",
 479                         ));
 480                 }
 481                 let mut persisted_lock = self.persisted_bytes.lock().unwrap();
 482
 483                 let prefixed = if secondary_namespace.is_empty() {
 484                         primary_namespace.to_string()
 485                 } else {
 486                         format!("{}/{}", primary_namespace, secondary_namespace)
 487                 };
 488                 let outer_e = persisted_lock.entry(prefixed).or_insert(HashMap::new());
 489                 let mut bytes = Vec::new();
 490                 bytes.write_all(buf)?;
 491                 outer_e.insert(key.to_string(), bytes);
 492                 Ok(())
 493         }
 494
 495         fn remove(&self, primary_namespace: &str, secondary_namespace: &str, key: &str, _lazy: bool) -> io::Result<()> {
 496                 if self.read_only {
 497                         return Err(io::Error::new(
 498                                 io::ErrorKind::PermissionDenied,
 499                                 "Cannot modify read-only store",
 500                         ));
 501                 }
 502
 503                 let mut persisted_lock = self.persisted_bytes.lock().unwrap();
 504
 505                 let prefixed = if secondary_namespace.is_empty() {
 506                         primary_namespace.to_string()
 507                 } else {
 508                         format!("{}/{}", primary_namespace, secondary_namespace)
 509                 };
 510                 if let Some(outer_ref) = persisted_lock.get_mut(&prefixed) {
 511                                 outer_ref.remove(&key.to_string());
 512                 }
 513
 514                 Ok(())
 515         }
 516
 517         fn list(&self, primary_namespace: &str, secondary_namespace: &str) -> io::Result<Vec<String>> {
 518                 let mut persisted_lock = self.persisted_bytes.lock().unwrap();
 519
 520                 let prefixed = if secondary_namespace.is_empty() {
 521                         primary_namespace.to_string()
 522                 } else {
 523                         format!("{}/{}", primary_namespace, secondary_namespace)
 524                 };
 525                 match persisted_lock.entry(prefixed) {
 526                         hash_map::Entry::Occupied(e) => Ok(e.get().keys().cloned().collect()),
 527                         hash_map::Entry::Vacant(_) => Ok(Vec::new()),
 528                 }
 529         }
 530 }
 531
 532 pub struct TestBroadcaster {
 533         pub txn_broadcasted: Mutex<Vec<Transaction>>,
 534         pub blocks: Arc<Mutex<Vec<(Block, u32)>>>,
 535 }
 536
 537 impl TestBroadcaster {
 538         pub fn new(network: Network) -> Self {
 539                 Self {
 540                         txn_broadcasted: Mutex::new(Vec::new()),
 541                         blocks: Arc::new(Mutex::new(vec![(genesis_block(network), 0)])),
 542                 }
 543         }
 544
 545         pub fn with_blocks(blocks: Arc<Mutex<Vec<(Block, u32)>>>) -> Self {
 546                 Self { txn_broadcasted: Mutex::new(Vec::new()), blocks }
 547         }
 548
 549         pub fn txn_broadcast(&self) -> Vec<Transaction> {
 550                 self.txn_broadcasted.lock().unwrap().split_off(0)
 551         }
 552
 553         pub fn unique_txn_broadcast(&self) -> Vec<Transaction> {
 554                 let mut txn = self.txn_broadcasted.lock().unwrap().split_off(0);
 555                 let mut seen = HashSet::new();
 556                 txn.retain(|tx| seen.insert(tx.txid()));
 557                 txn
 558         }
 559 }
 560
 561 impl chaininterface::BroadcasterInterface for TestBroadcaster {
 562         fn broadcast_transactions(&self, txs: &[&Transaction]) {
 563                 for tx in txs {
 564                         let lock_time = tx.lock_time.0;
 565                         assert!(lock_time < 1_500_000_000);
 566                         if bitcoin::LockTime::from(tx.lock_time).is_block_height() && lock_time > self.blocks.lock().unwrap().last().unwrap().1 {
 567                                 for inp in tx.input.iter() {
 568                                         if inp.sequence != Sequence::MAX {
 569                                                 panic!("We should never broadcast a transaction before its locktime ({})!", tx.lock_time);
 570                                         }
 571                                 }
 572                         }
 573                 }
 574                 let owned_txs: Vec<Transaction> = txs.iter().map(|tx| (*tx).clone()).collect();
 575                 self.txn_broadcasted.lock().unwrap().extend(owned_txs);
 576         }
 577 }
 578
 579 pub struct TestChannelMessageHandler {
 580         pub pending_events: Mutex<Vec<events::MessageSendEvent>>,
 581         expected_recv_msgs: Mutex<Option<Vec<wire::Message<()>>>>,
 582         connected_peers: Mutex<HashSet<PublicKey>>,
 583         pub message_fetch_counter: AtomicUsize,
 584         genesis_hash: ChainHash,
 585 }
 586
 587 impl TestChannelMessageHandler {
 588         pub fn new(genesis_hash: ChainHash) -> Self {
 589                 TestChannelMessageHandler {
 590                         pending_events: Mutex::new(Vec::new()),
 591                         expected_recv_msgs: Mutex::new(None),
 592                         connected_peers: Mutex::new(HashSet::new()),
 593                         message_fetch_counter: AtomicUsize::new(0),
 594                         genesis_hash,
 595                 }
 596         }
 597
 598         #[cfg(test)]
 599         pub(crate) fn expect_receive_msg(&self, ev: wire::Message<()>) {
 600                 let mut expected_msgs = self.expected_recv_msgs.lock().unwrap();
 601                 if expected_msgs.is_none() { *expected_msgs = Some(Vec::new()); }
 602                 expected_msgs.as_mut().unwrap().push(ev);
 603         }
 604
 605         fn received_msg(&self, _ev: wire::Message<()>) {
 606                 let mut msgs = self.expected_recv_msgs.lock().unwrap();
 607                 if msgs.is_none() { return; }
 608                 assert!(!msgs.as_ref().unwrap().is_empty(), "Received message when we weren't expecting one");
 609                 #[cfg(test)]
 610                 assert_eq!(msgs.as_ref().unwrap()[0], _ev);
 611                 msgs.as_mut().unwrap().remove(0);
 612         }
 613 }
 614
 615 impl Drop for TestChannelMessageHandler {
 616         fn drop(&mut self) {
 617                 #[cfg(feature = "std")]
 618                 {
 619                         let l = self.expected_recv_msgs.lock().unwrap();
 620                         if !std::thread::panicking() {
 621                                 assert!(l.is_none() || l.as_ref().unwrap().is_empty());
 622                         }
 623                 }
 624         }
 625 }
 626
 627 impl msgs::ChannelMessageHandler for TestChannelMessageHandler {
 628         fn handle_open_channel(&self, _their_node_id: &PublicKey, msg: &msgs::OpenChannel) {
 629                 self.received_msg(wire::Message::OpenChannel(msg.clone()));
 630         }
 631         fn handle_accept_channel(&self, _their_node_id: &PublicKey, msg: &msgs::AcceptChannel) {
 632                 self.received_msg(wire::Message::AcceptChannel(msg.clone()));
 633         }
 634         fn handle_funding_created(&self, _their_node_id: &PublicKey, msg: &msgs::FundingCreated) {
 635                 self.received_msg(wire::Message::FundingCreated(msg.clone()));
 636         }
 637         fn handle_funding_signed(&self, _their_node_id: &PublicKey, msg: &msgs::FundingSigned) {
 638                 self.received_msg(wire::Message::FundingSigned(msg.clone()));
 639         }
 640         fn handle_channel_ready(&self, _their_node_id: &PublicKey, msg: &msgs::ChannelReady) {
 641                 self.received_msg(wire::Message::ChannelReady(msg.clone()));
 642         }
 643         fn handle_shutdown(&self, _their_node_id: &PublicKey, msg: &msgs::Shutdown) {
 644                 self.received_msg(wire::Message::Shutdown(msg.clone()));
 645         }
 646         fn handle_closing_signed(&self, _their_node_id: &PublicKey, msg: &msgs::ClosingSigned) {
 647                 self.received_msg(wire::Message::ClosingSigned(msg.clone()));
 648         }
 649         fn handle_update_add_htlc(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateAddHTLC) {
 650                 self.received_msg(wire::Message::UpdateAddHTLC(msg.clone()));
 651         }
 652         fn handle_update_fulfill_htlc(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) {
 653                 self.received_msg(wire::Message::UpdateFulfillHTLC(msg.clone()));
 654         }
 655         fn handle_update_fail_htlc(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) {
 656                 self.received_msg(wire::Message::UpdateFailHTLC(msg.clone()));
 657         }
 658         fn handle_update_fail_malformed_htlc(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) {
 659                 self.received_msg(wire::Message::UpdateFailMalformedHTLC(msg.clone()));
 660         }
 661         fn handle_commitment_signed(&self, _their_node_id: &PublicKey, msg: &msgs::CommitmentSigned) {
 662                 self.received_msg(wire::Message::CommitmentSigned(msg.clone()));
 663         }
 664         fn handle_revoke_and_ack(&self, _their_node_id: &PublicKey, msg: &msgs::RevokeAndACK) {
 665                 self.received_msg(wire::Message::RevokeAndACK(msg.clone()));
 666         }
 667         fn handle_update_fee(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateFee) {
 668                 self.received_msg(wire::Message::UpdateFee(msg.clone()));
 669         }
 670         fn handle_channel_update(&self, _their_node_id: &PublicKey, _msg: &msgs::ChannelUpdate) {
 671                 // Don't call `received_msg` here as `TestRoutingMessageHandler` generates these sometimes
 672         }
 673         fn handle_announcement_signatures(&self, _their_node_id: &PublicKey, msg: &msgs::AnnouncementSignatures) {
 674                 self.received_msg(wire::Message::AnnouncementSignatures(msg.clone()));
 675         }
 676         fn handle_channel_reestablish(&self, _their_node_id: &PublicKey, msg: &msgs::ChannelReestablish) {
 677                 self.received_msg(wire::Message::ChannelReestablish(msg.clone()));
 678         }
 679         fn peer_disconnected(&self, their_node_id: &PublicKey) {
 680                 assert!(self.connected_peers.lock().unwrap().remove(their_node_id));
 681         }
 682         fn peer_connected(&self, their_node_id: &PublicKey, _msg: &msgs::Init, _inbound: bool) -> Result<(), ()> {
 683                 assert!(self.connected_peers.lock().unwrap().insert(their_node_id.clone()));
 684                 // Don't bother with `received_msg` for Init as its auto-generated and we don't want to
 685                 // bother re-generating the expected Init message in all tests.
 686                 Ok(())
 687         }
 688         fn handle_error(&self, _their_node_id: &PublicKey, msg: &msgs::ErrorMessage) {
 689                 self.received_msg(wire::Message::Error(msg.clone()));
 690         }
 691         fn provided_node_features(&self) -> NodeFeatures {
 692                 channelmanager::provided_node_features(&UserConfig::default())
 693         }
 694         fn provided_init_features(&self, _their_init_features: &PublicKey) -> InitFeatures {
 695                 channelmanager::provided_init_features(&UserConfig::default())
 696         }
 697
 698         fn get_genesis_hashes(&self) -> Option<Vec<ChainHash>> {
 699                 Some(vec![self.genesis_hash])
 700         }
 701
 702         fn handle_open_channel_v2(&self, _their_node_id: &PublicKey, msg: &msgs::OpenChannelV2) {
 703                 self.received_msg(wire::Message::OpenChannelV2(msg.clone()));
 704         }
 705
 706         fn handle_accept_channel_v2(&self, _their_node_id: &PublicKey, msg: &msgs::AcceptChannelV2) {
 707                 self.received_msg(wire::Message::AcceptChannelV2(msg.clone()));
 708         }
 709
 710         fn handle_tx_add_input(&self, _their_node_id: &PublicKey, msg: &msgs::TxAddInput) {
 711                 self.received_msg(wire::Message::TxAddInput(msg.clone()));
 712         }
 713
 714         fn handle_tx_add_output(&self, _their_node_id: &PublicKey, msg: &msgs::TxAddOutput) {
 715                 self.received_msg(wire::Message::TxAddOutput(msg.clone()));
 716         }
 717
 718         fn handle_tx_remove_input(&self, _their_node_id: &PublicKey, msg: &msgs::TxRemoveInput) {
 719                 self.received_msg(wire::Message::TxRemoveInput(msg.clone()));
 720         }
 721
 722         fn handle_tx_remove_output(&self, _their_node_id: &PublicKey, msg: &msgs::TxRemoveOutput) {
 723                 self.received_msg(wire::Message::TxRemoveOutput(msg.clone()));
 724         }
 725
 726         fn handle_tx_complete(&self, _their_node_id: &PublicKey, msg: &msgs::TxComplete) {
 727                 self.received_msg(wire::Message::TxComplete(msg.clone()));
 728         }
 729
 730         fn handle_tx_signatures(&self, _their_node_id: &PublicKey, msg: &msgs::TxSignatures) {
 731                 self.received_msg(wire::Message::TxSignatures(msg.clone()));
 732         }
 733
 734         fn handle_tx_init_rbf(&self, _their_node_id: &PublicKey, msg: &msgs::TxInitRbf) {
 735                 self.received_msg(wire::Message::TxInitRbf(msg.clone()));
 736         }
 737
 738         fn handle_tx_ack_rbf(&self, _their_node_id: &PublicKey, msg: &msgs::TxAckRbf) {
 739                 self.received_msg(wire::Message::TxAckRbf(msg.clone()));
 740         }
 741
 742         fn handle_tx_abort(&self, _their_node_id: &PublicKey, msg: &msgs::TxAbort) {
 743                 self.received_msg(wire::Message::TxAbort(msg.clone()));
 744         }
 745 }
 746
 747 impl events::MessageSendEventsProvider for TestChannelMessageHandler {
 748         fn get_and_clear_pending_msg_events(&self) -> Vec<events::MessageSendEvent> {
 749                 self.message_fetch_counter.fetch_add(1, Ordering::AcqRel);
 750                 let mut pending_events = self.pending_events.lock().unwrap();
 751                 let mut ret = Vec::new();
 752                 mem::swap(&mut ret, &mut *pending_events);
 753                 ret
 754         }
 755 }
 756
 757 fn get_dummy_channel_announcement(short_chan_id: u64) -> msgs::ChannelAnnouncement {
 758         use bitcoin::secp256k1::ffi::Signature as FFISignature;
 759         let secp_ctx = Secp256k1::new();
 760         let network = Network::Testnet;
 761         let node_1_privkey = SecretKey::from_slice(&[42; 32]).unwrap();
 762         let node_2_privkey = SecretKey::from_slice(&[41; 32]).unwrap();
 763         let node_1_btckey = SecretKey::from_slice(&[40; 32]).unwrap();
 764         let node_2_btckey = SecretKey::from_slice(&[39; 32]).unwrap();
 765         let unsigned_ann = msgs::UnsignedChannelAnnouncement {
 766                 features: ChannelFeatures::empty(),
 767                 chain_hash: genesis_block(network).header.block_hash(),
 768                 short_channel_id: short_chan_id,
 769                 node_id_1: NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, &node_1_privkey)),
 770                 node_id_2: NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, &node_2_privkey)),
 771                 bitcoin_key_1: NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, &node_1_btckey)),
 772                 bitcoin_key_2: NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, &node_2_btckey)),
 773                 excess_data: Vec::new(),
 774         };
 775
 776         unsafe {
 777                 msgs::ChannelAnnouncement {
 778                         node_signature_1: Signature::from(FFISignature::new()),
 779                         node_signature_2: Signature::from(FFISignature::new()),
 780                         bitcoin_signature_1: Signature::from(FFISignature::new()),
 781                         bitcoin_signature_2: Signature::from(FFISignature::new()),
 782                         contents: unsigned_ann,
 783                 }
 784         }
 785 }
 786
 787 fn get_dummy_channel_update(short_chan_id: u64) -> msgs::ChannelUpdate {
 788         use bitcoin::secp256k1::ffi::Signature as FFISignature;
 789         let network = Network::Testnet;
 790         msgs::ChannelUpdate {
 791                 signature: Signature::from(unsafe { FFISignature::new() }),
 792                 contents: msgs::UnsignedChannelUpdate {
 793                         chain_hash: genesis_block(network).header.block_hash(),
 794                         short_channel_id: short_chan_id,
 795                         timestamp: 0,
 796                         flags: 0,
 797                         cltv_expiry_delta: 0,
 798                         htlc_minimum_msat: 0,
 799                         htlc_maximum_msat: msgs::MAX_VALUE_MSAT,
 800                         fee_base_msat: 0,
 801                         fee_proportional_millionths: 0,
 802                         excess_data: vec![],
 803                 }
 804         }
 805 }
 806
 807 pub struct TestRoutingMessageHandler {
 808         pub chan_upds_recvd: AtomicUsize,
 809         pub chan_anns_recvd: AtomicUsize,
 810         pub pending_events: Mutex<Vec<events::MessageSendEvent>>,
 811         pub request_full_sync: AtomicBool,
 812 }
 813
 814 impl TestRoutingMessageHandler {
 815         pub fn new() -> Self {
 816                 TestRoutingMessageHandler {
 817                         chan_upds_recvd: AtomicUsize::new(0),
 818                         chan_anns_recvd: AtomicUsize::new(0),
 819                         pending_events: Mutex::new(vec![]),
 820                         request_full_sync: AtomicBool::new(false),
 821                 }
 822         }
 823 }
 824 impl msgs::RoutingMessageHandler for TestRoutingMessageHandler {
 825         fn handle_node_announcement(&self, _msg: &msgs::NodeAnnouncement) -> Result<bool, msgs::LightningError> {
 826                 Err(msgs::LightningError { err: "".to_owned(), action: msgs::ErrorAction::IgnoreError })
 827         }
 828         fn handle_channel_announcement(&self, _msg: &msgs::ChannelAnnouncement) -> Result<bool, msgs::LightningError> {
 829                 self.chan_anns_recvd.fetch_add(1, Ordering::AcqRel);
 830                 Err(msgs::LightningError { err: "".to_owned(), action: msgs::ErrorAction::IgnoreError })
 831         }
 832         fn handle_channel_update(&self, _msg: &msgs::ChannelUpdate) -> Result<bool, msgs::LightningError> {
 833                 self.chan_upds_recvd.fetch_add(1, Ordering::AcqRel);
 834                 Err(msgs::LightningError { err: "".to_owned(), action: msgs::ErrorAction::IgnoreError })
 835         }
 836         fn get_next_channel_announcement(&self, starting_point: u64) -> Option<(msgs::ChannelAnnouncement, Option<msgs::ChannelUpdate>, Option<msgs::ChannelUpdate>)> {
 837                 let chan_upd_1 = get_dummy_channel_update(starting_point);
 838                 let chan_upd_2 = get_dummy_channel_update(starting_point);
 839                 let chan_ann = get_dummy_channel_announcement(starting_point);
 840
 841                 Some((chan_ann, Some(chan_upd_1), Some(chan_upd_2)))
 842         }
 843
 844         fn get_next_node_announcement(&self, _starting_point: Option<&NodeId>) -> Option<msgs::NodeAnnouncement> {
 845                 None
 846         }
 847
 848         fn peer_connected(&self, their_node_id: &PublicKey, init_msg: &msgs::Init, _inbound: bool) -> Result<(), ()> {
 849                 if !init_msg.features.supports_gossip_queries() {
 850                         return Ok(());
 851                 }
 852
 853                 #[allow(unused_mut, unused_assignments)]
 854                 let mut gossip_start_time = 0;
 855                 #[cfg(feature = "std")]
 856                 {
 857                         gossip_start_time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
 858                         if self.request_full_sync.load(Ordering::Acquire) {
 859                                 gossip_start_time -= 60 * 60 * 24 * 7 * 2; // 2 weeks ago
 860                         } else {
 861                                 gossip_start_time -= 60 * 60; // an hour ago
 862                         }
 863                 }
 864
 865                 let mut pending_events = self.pending_events.lock().unwrap();
 866                 pending_events.push(events::MessageSendEvent::SendGossipTimestampFilter {
 867                         node_id: their_node_id.clone(),
 868                         msg: msgs::GossipTimestampFilter {
 869                                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 870                                 first_timestamp: gossip_start_time as u32,
 871                                 timestamp_range: u32::max_value(),
 872                         },
 873                 });
 874                 Ok(())
 875         }
 876
 877         fn handle_reply_channel_range(&self, _their_node_id: &PublicKey, _msg: msgs::ReplyChannelRange) -> Result<(), msgs::LightningError> {
 878                 Ok(())
 879         }
 880
 881         fn handle_reply_short_channel_ids_end(&self, _their_node_id: &PublicKey, _msg: msgs::ReplyShortChannelIdsEnd) -> Result<(), msgs::LightningError> {
 882                 Ok(())
 883         }
 884
 885         fn handle_query_channel_range(&self, _their_node_id: &PublicKey, _msg: msgs::QueryChannelRange) -> Result<(), msgs::LightningError> {
 886                 Ok(())
 887         }
 888
 889         fn handle_query_short_channel_ids(&self, _their_node_id: &PublicKey, _msg: msgs::QueryShortChannelIds) -> Result<(), msgs::LightningError> {
 890                 Ok(())
 891         }
 892
 893         fn provided_node_features(&self) -> NodeFeatures {
 894                 let mut features = NodeFeatures::empty();
 895                 features.set_gossip_queries_optional();
 896                 features
 897         }
 898
 899         fn provided_init_features(&self, _their_init_features: &PublicKey) -> InitFeatures {
 900                 let mut features = InitFeatures::empty();
 901                 features.set_gossip_queries_optional();
 902                 features
 903         }
 904
 905         fn processing_queue_high(&self) -> bool { false }
 906 }
 907
 908 impl events::MessageSendEventsProvider for TestRoutingMessageHandler {
 909         fn get_and_clear_pending_msg_events(&self) -> Vec<events::MessageSendEvent> {
 910                 let mut ret = Vec::new();
 911                 let mut pending_events = self.pending_events.lock().unwrap();
 912                 core::mem::swap(&mut ret, &mut pending_events);
 913                 ret
 914         }
 915 }
 916
 917 pub struct TestLogger {
 918         level: Level,
 919         pub(crate) id: String,
 920         pub lines: Mutex<HashMap<(String, String), usize>>,
 921 }
 922
 923 impl TestLogger {
 924         pub fn new() -> TestLogger {
 925                 Self::with_id("".to_owned())
 926         }
 927         pub fn with_id(id: String) -> TestLogger {
 928                 TestLogger {
 929                         level: Level::Trace,
 930                         id,
 931                         lines: Mutex::new(HashMap::new())
 932                 }
 933         }
 934         pub fn enable(&mut self, level: Level) {
 935                 self.level = level;
 936         }
 937         pub fn assert_log(&self, module: String, line: String, count: usize) {
 938                 let log_entries = self.lines.lock().unwrap();
 939                 assert_eq!(log_entries.get(&(module, line)), Some(&count));
 940         }
 941
 942         /// Search for the number of occurrence of the logged lines which
 943         /// 1. belongs to the specified module and
 944         /// 2. contains `line` in it.
 945         /// And asserts if the number of occurrences is the same with the given `count`
 946         pub fn assert_log_contains(&self, module: &str, line: &str, count: usize) {
 947                 let log_entries = self.lines.lock().unwrap();
 948                 let l: usize = log_entries.iter().filter(|&(&(ref m, ref l), _c)| {
 949                         m == module && l.contains(line)
 950                 }).map(|(_, c) | { c }).sum();
 951                 assert_eq!(l, count)
 952         }
 953
 954         /// Search for the number of occurrences of logged lines which
 955         /// 1. belong to the specified module and
 956         /// 2. match the given regex pattern.
 957         /// Assert that the number of occurrences equals the given `count`
 958         #[cfg(any(test, feature = "_test_utils"))]
 959         pub fn assert_log_regex(&self, module: &str, pattern: regex::Regex, count: usize) {
 960                 let log_entries = self.lines.lock().unwrap();
 961                 let l: usize = log_entries.iter().filter(|&(&(ref m, ref l), _c)| {
 962                         m == module && pattern.is_match(&l)
 963                 }).map(|(_, c) | { c }).sum();
 964                 assert_eq!(l, count)
 965         }
 966 }
 967
 968 impl Logger for TestLogger {
 969         fn log(&self, record: &Record) {
 970                 *self.lines.lock().unwrap().entry((record.module_path.to_string(), format!("{}", record.args))).or_insert(0) += 1;
 971                 if record.level >= self.level {
 972                         #[cfg(all(not(ldk_bench), feature = "std"))]
 973                         println!("{:<5} {} [{} : {}, {}] {}", record.level.to_string(), self.id, record.module_path, record.file, record.line, record.args);
 974                 }
 975         }
 976 }
 977
 978 pub struct TestNodeSigner {
 979         node_secret: SecretKey,
 980 }
 981
 982 impl TestNodeSigner {
 983         pub fn new(node_secret: SecretKey) -> Self {
 984                 Self { node_secret }
 985         }
 986 }
 987
 988 impl NodeSigner for TestNodeSigner {
 989         fn get_inbound_payment_key_material(&self) -> crate::sign::KeyMaterial {
 990                 unreachable!()
 991         }
 992
 993         fn get_node_id(&self, recipient: Recipient) -> Result<PublicKey, ()> {
 994                 let node_secret = match recipient {
 995                         Recipient::Node => Ok(&self.node_secret),
 996                         Recipient::PhantomNode => Err(())
 997                 }?;
 998                 Ok(PublicKey::from_secret_key(&Secp256k1::signing_only(), node_secret))
 999         }
1000
1001         fn ecdh(&self, recipient: Recipient, other_key: &PublicKey, tweak: Option<&bitcoin::secp256k1::Scalar>) -> Result<SharedSecret, ()> {
1002                 let mut node_secret = match recipient {
1003                         Recipient::Node => Ok(self.node_secret.clone()),
1004                         Recipient::PhantomNode => Err(())
1005                 }?;
1006                 if let Some(tweak) = tweak {
1007                         node_secret = node_secret.mul_tweak(tweak).map_err(|_| ())?;
1008                 }
1009                 Ok(SharedSecret::new(other_key, &node_secret))
1010         }
1011
1012         fn sign_invoice(&self, _: &[u8], _: &[bitcoin::bech32::u5], _: Recipient) -> Result<bitcoin::secp256k1::ecdsa::RecoverableSignature, ()> {
1013                 unreachable!()
1014         }
1015
1016         fn sign_bolt12_invoice_request(
1017                 &self, _invoice_request: &UnsignedInvoiceRequest
1018         ) -> Result<schnorr::Signature, ()> {
1019                 unreachable!()
1020         }
1021
1022         fn sign_bolt12_invoice(
1023                 &self, _invoice: &UnsignedBolt12Invoice,
1024         ) -> Result<schnorr::Signature, ()> {
1025                 unreachable!()
1026         }
1027
1028         fn sign_gossip_message(&self, _msg: msgs::UnsignedGossipMessage) -> Result<Signature, ()> {
1029                 unreachable!()
1030         }
1031 }
1032
1033 pub struct TestKeysInterface {
1034         pub backing: sign::PhantomKeysManager,
1035         pub override_random_bytes: Mutex<Option<[u8; 32]>>,
1036         pub disable_revocation_policy_check: bool,
1037         enforcement_states: Mutex<HashMap<[u8;32], Arc<Mutex<EnforcementState>>>>,
1038         expectations: Mutex<Option<VecDeque<OnGetShutdownScriptpubkey>>>,
1039 }
1040
1041 impl EntropySource for TestKeysInterface {
1042         fn get_secure_random_bytes(&self) -> [u8; 32] {
1043                 let override_random_bytes = self.override_random_bytes.lock().unwrap();
1044                 if let Some(bytes) = &*override_random_bytes {
1045                         return *bytes;
1046                 }
1047                 self.backing.get_secure_random_bytes()
1048         }
1049 }
1050
1051 impl NodeSigner for TestKeysInterface {
1052         fn get_node_id(&self, recipient: Recipient) -> Result<PublicKey, ()> {
1053                 self.backing.get_node_id(recipient)
1054         }
1055
1056         fn ecdh(&self, recipient: Recipient, other_key: &PublicKey, tweak: Option<&Scalar>) -> Result<SharedSecret, ()> {
1057                 self.backing.ecdh(recipient, other_key, tweak)
1058         }
1059
1060         fn get_inbound_payment_key_material(&self) -> sign::KeyMaterial {
1061                 self.backing.get_inbound_payment_key_material()
1062         }
1063
1064         fn sign_invoice(&self, hrp_bytes: &[u8], invoice_data: &[u5], recipient: Recipient) -> Result<RecoverableSignature, ()> {
1065                 self.backing.sign_invoice(hrp_bytes, invoice_data, recipient)
1066         }
1067
1068         fn sign_bolt12_invoice_request(
1069                 &self, invoice_request: &UnsignedInvoiceRequest
1070         ) -> Result<schnorr::Signature, ()> {
1071                 self.backing.sign_bolt12_invoice_request(invoice_request)
1072         }
1073
1074         fn sign_bolt12_invoice(
1075                 &self, invoice: &UnsignedBolt12Invoice,
1076         ) -> Result<schnorr::Signature, ()> {
1077                 self.backing.sign_bolt12_invoice(invoice)
1078         }
1079
1080         fn sign_gossip_message(&self, msg: msgs::UnsignedGossipMessage) -> Result<Signature, ()> {
1081                 self.backing.sign_gossip_message(msg)
1082         }
1083 }
1084
1085 impl SignerProvider for TestKeysInterface {
1086         type Signer = TestChannelSigner;
1087
1088         fn generate_channel_keys_id(&self, inbound: bool, channel_value_satoshis: u64, user_channel_id: u128) -> [u8; 32] {
1089                 self.backing.generate_channel_keys_id(inbound, channel_value_satoshis, user_channel_id)
1090         }
1091
1092         fn derive_channel_signer(&self, channel_value_satoshis: u64, channel_keys_id: [u8; 32]) -> TestChannelSigner {
1093                 let keys = self.backing.derive_channel_signer(channel_value_satoshis, channel_keys_id);
1094                 let state = self.make_enforcement_state_cell(keys.commitment_seed);
1095                 TestChannelSigner::new_with_revoked(keys, state, self.disable_revocation_policy_check)
1096         }
1097
1098         fn read_chan_signer(&self, buffer: &[u8]) -> Result<Self::Signer, msgs::DecodeError> {
1099                 let mut reader = io::Cursor::new(buffer);
1100
1101                 let inner: InMemorySigner = ReadableArgs::read(&mut reader, self)?;
1102                 let state = self.make_enforcement_state_cell(inner.commitment_seed);
1103
1104                 Ok(TestChannelSigner::new_with_revoked(
1105                         inner,
1106                         state,
1107                         self.disable_revocation_policy_check
1108                 ))
1109         }
1110
1111         fn get_destination_script(&self) -> Result<Script, ()> { self.backing.get_destination_script() }
1112
1113         fn get_shutdown_scriptpubkey(&self) -> Result<ShutdownScript, ()> {
1114                 match &mut *self.expectations.lock().unwrap() {
1115                         None => self.backing.get_shutdown_scriptpubkey(),
1116                         Some(expectations) => match expectations.pop_front() {
1117                                 None => panic!("Unexpected get_shutdown_scriptpubkey"),
1118                                 Some(expectation) => Ok(expectation.returns),
1119                         },
1120                 }
1121         }
1122 }
1123
1124 impl TestKeysInterface {
1125         pub fn new(seed: &[u8; 32], network: Network) -> Self {
1126                 let now = Duration::from_secs(genesis_block(network).header.time as u64);
1127                 Self {
1128                         backing: sign::PhantomKeysManager::new(seed, now.as_secs(), now.subsec_nanos(), seed),
1129                         override_random_bytes: Mutex::new(None),
1130                         disable_revocation_policy_check: false,
1131                         enforcement_states: Mutex::new(HashMap::new()),
1132                         expectations: Mutex::new(None),
1133                 }
1134         }
1135
1136         /// Sets an expectation that [`sign::SignerProvider::get_shutdown_scriptpubkey`] is
1137         /// called.
1138         pub fn expect(&self, expectation: OnGetShutdownScriptpubkey) -> &Self {
1139                 self.expectations.lock().unwrap()
1140                         .get_or_insert_with(|| VecDeque::new())
1141                         .push_back(expectation);
1142                 self
1143         }
1144
1145         pub fn derive_channel_keys(&self, channel_value_satoshis: u64, id: &[u8; 32]) -> TestChannelSigner {
1146                 let keys = self.backing.derive_channel_keys(channel_value_satoshis, id);
1147                 let state = self.make_enforcement_state_cell(keys.commitment_seed);
1148                 TestChannelSigner::new_with_revoked(keys, state, self.disable_revocation_policy_check)
1149         }
1150
1151         fn make_enforcement_state_cell(&self, commitment_seed: [u8; 32]) -> Arc<Mutex<EnforcementState>> {
1152                 let mut states = self.enforcement_states.lock().unwrap();
1153                 if !states.contains_key(&commitment_seed) {
1154                         let state = EnforcementState::new();
1155                         states.insert(commitment_seed, Arc::new(Mutex::new(state)));
1156                 }
1157                 let cell = states.get(&commitment_seed).unwrap();
1158                 Arc::clone(cell)
1159         }
1160 }
1161
1162 pub(crate) fn panicking() -> bool {
1163         #[cfg(feature = "std")]
1164         let panicking = ::std::thread::panicking();
1165         #[cfg(not(feature = "std"))]
1166         let panicking = false;
1167         return panicking;
1168 }
1169
1170 impl Drop for TestKeysInterface {
1171         fn drop(&mut self) {
1172                 if panicking() {
1173                         return;
1174                 }
1175
1176                 if let Some(expectations) = &*self.expectations.lock().unwrap() {
1177                         if !expectations.is_empty() {
1178                                 panic!("Unsatisfied expectations: {:?}", expectations);
1179                         }
1180                 }
1181         }
1182 }
1183
1184 /// An expectation that [`sign::SignerProvider::get_shutdown_scriptpubkey`] was called and
1185 /// returns a [`ShutdownScript`].
1186 pub struct OnGetShutdownScriptpubkey {
1187         /// A shutdown script used to close a channel.
1188         pub returns: ShutdownScript,
1189 }
1190
1191 impl core::fmt::Debug for OnGetShutdownScriptpubkey {
1192         fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
1193                 f.debug_struct("OnGetShutdownScriptpubkey").finish()
1194         }
1195 }
1196
1197 pub struct TestChainSource {
1198         pub genesis_hash: BlockHash,
1199         pub utxo_ret: Mutex<UtxoResult>,
1200         pub get_utxo_call_count: AtomicUsize,
1201         pub watched_txn: Mutex<HashSet<(Txid, Script)>>,
1202         pub watched_outputs: Mutex<HashSet<(OutPoint, Script)>>,
1203 }
1204
1205 impl TestChainSource {
1206         pub fn new(network: Network) -> Self {
1207                 let script_pubkey = Builder::new().push_opcode(opcodes::OP_TRUE).into_script();
1208                 Self {
1209                         genesis_hash: genesis_block(network).block_hash(),
1210                         utxo_ret: Mutex::new(UtxoResult::Sync(Ok(TxOut { value: u64::max_value(), script_pubkey }))),
1211                         get_utxo_call_count: AtomicUsize::new(0),
1212                         watched_txn: Mutex::new(HashSet::new()),
1213                         watched_outputs: Mutex::new(HashSet::new()),
1214                 }
1215         }
1216 }
1217
1218 impl UtxoLookup for TestChainSource {
1219         fn get_utxo(&self, genesis_hash: &BlockHash, _short_channel_id: u64) -> UtxoResult {
1220                 self.get_utxo_call_count.fetch_add(1, Ordering::Relaxed);
1221                 if self.genesis_hash != *genesis_hash {
1222                         return UtxoResult::Sync(Err(UtxoLookupError::UnknownChain));
1223                 }
1224
1225                 self.utxo_ret.lock().unwrap().clone()
1226         }
1227 }
1228
1229 impl chain::Filter for TestChainSource {
1230         fn register_tx(&self, txid: &Txid, script_pubkey: &Script) {
1231                 self.watched_txn.lock().unwrap().insert((*txid, script_pubkey.clone()));
1232         }
1233
1234         fn register_output(&self, output: WatchedOutput) {
1235                 self.watched_outputs.lock().unwrap().insert((output.outpoint, output.script_pubkey));
1236         }
1237 }
1238
1239 impl Drop for TestChainSource {
1240         fn drop(&mut self) {
1241                 if panicking() {
1242                         return;
1243                 }
1244         }
1245 }
1246
1247 pub struct TestScorer {
1248         /// Stores a tuple of (scid, ChannelUsage)
1249         scorer_expectations: RefCell<Option<VecDeque<(u64, ChannelUsage)>>>,
1250 }
1251
1252 impl TestScorer {
1253         pub fn new() -> Self {
1254                 Self {
1255                         scorer_expectations: RefCell::new(None),
1256                 }
1257         }
1258
1259         pub fn expect_usage(&self, scid: u64, expectation: ChannelUsage) {
1260                 self.scorer_expectations.borrow_mut().get_or_insert_with(|| VecDeque::new()).push_back((scid, expectation));
1261         }
1262 }
1263
1264 #[cfg(c_bindings)]
1265 impl crate::util::ser::Writeable for TestScorer {
1266         fn write<W: crate::util::ser::Writer>(&self, _: &mut W) -> Result<(), crate::io::Error> { unreachable!(); }
1267 }
1268
1269 impl ScoreLookUp for TestScorer {
1270         type ScoreParams = ();
1271         fn channel_penalty_msat(
1272                 &self, short_channel_id: u64, _source: &NodeId, _target: &NodeId, usage: ChannelUsage, _score_params: &Self::ScoreParams
1273         ) -> u64 {
1274                 if let Some(scorer_expectations) = self.scorer_expectations.borrow_mut().as_mut() {
1275                         match scorer_expectations.pop_front() {
1276                                 Some((scid, expectation)) => {
1277                                         assert_eq!(expectation, usage);
1278                                         assert_eq!(scid, short_channel_id);
1279                                 },
1280                                 None => {},
1281                         }
1282                 }
1283                 0
1284         }
1285 }
1286
1287 impl ScoreUpdate for TestScorer {
1288         fn payment_path_failed(&mut self, _actual_path: &Path, _actual_short_channel_id: u64) {}
1289
1290         fn payment_path_successful(&mut self, _actual_path: &Path) {}
1291
1292         fn probe_failed(&mut self, _actual_path: &Path, _: u64) {}
1293
1294         fn probe_successful(&mut self, _actual_path: &Path) {}
1295 }
1296
1297 impl Drop for TestScorer {
1298         fn drop(&mut self) {
1299                 #[cfg(feature = "std")] {
1300                         if std::thread::panicking() {
1301                                 return;
1302                         }
1303                 }
1304
1305                 if let Some(scorer_expectations) = self.scorer_expectations.borrow().as_ref() {
1306                         if !scorer_expectations.is_empty() {
1307                                 panic!("Unsatisfied scorer expectations: {:?}", scorer_expectations)
1308                         }
1309                 }
1310         }
1311 }
1312
1313 pub struct TestWalletSource {
1314         secret_key: SecretKey,
1315         utxos: RefCell<Vec<Utxo>>,
1316         secp: Secp256k1<bitcoin::secp256k1::All>,
1317 }
1318
1319 impl TestWalletSource {
1320         pub fn new(secret_key: SecretKey) -> Self {
1321                 Self {
1322                         secret_key,
1323                         utxos: RefCell::new(Vec::new()),
1324                         secp: Secp256k1::new(),
1325                 }
1326         }
1327
1328         pub fn add_utxo(&self, outpoint: bitcoin::OutPoint, value: u64) -> TxOut {
1329                 let public_key = bitcoin::PublicKey::new(self.secret_key.public_key(&self.secp));
1330                 let utxo = Utxo::new_p2pkh(outpoint, value, &public_key.pubkey_hash());
1331                 self.utxos.borrow_mut().push(utxo.clone());
1332                 utxo.output
1333         }
1334
1335         pub fn add_custom_utxo(&self, utxo: Utxo) -> TxOut {
1336                 let output = utxo.output.clone();
1337                 self.utxos.borrow_mut().push(utxo);
1338                 output
1339         }
1340
1341         pub fn remove_utxo(&self, outpoint: bitcoin::OutPoint) {
1342                 self.utxos.borrow_mut().retain(|utxo| utxo.outpoint != outpoint);
1343         }
1344 }
1345
1346 impl WalletSource for TestWalletSource {
1347         fn list_confirmed_utxos(&self) -> Result<Vec<Utxo>, ()> {
1348                 Ok(self.utxos.borrow().clone())
1349         }
1350
1351         fn get_change_script(&self) -> Result<Script, ()> {
1352                 let public_key = bitcoin::PublicKey::new(self.secret_key.public_key(&self.secp));
1353                 Ok(Script::new_p2pkh(&public_key.pubkey_hash()))
1354         }
1355
1356         fn sign_tx(&self, mut tx: Transaction) -> Result<Transaction, ()> {
1357                 let utxos = self.utxos.borrow();
1358                 for i in 0..tx.input.len() {
1359                         if let Some(utxo) = utxos.iter().find(|utxo| utxo.outpoint == tx.input[i].previous_output) {
1360                                 let sighash = SighashCache::new(&tx)
1361                                         .legacy_signature_hash(i, &utxo.output.script_pubkey, EcdsaSighashType::All as u32)
1362                                         .map_err(|_| ())?;
1363                                 let sig = self.secp.sign_ecdsa(&sighash.as_hash().into(), &self.secret_key);
1364                                 let bitcoin_sig = bitcoin::EcdsaSig { sig, hash_ty: EcdsaSighashType::All }.to_vec();
1365                                 tx.input[i].script_sig = Builder::new()
1366                                         .push_slice(&bitcoin_sig)
1367                                         .push_slice(&self.secret_key.public_key(&self.secp).serialize())
1368                                         .into_script();
1369                         }
1370                 }
1371                 Ok(tx)
1372         }
1373 }