_ 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 chain;
  11 use chain::WatchedOutput;
  12 use chain::chaininterface;
  13 use chain::chaininterface::ConfirmationTarget;
  14 use chain::chainmonitor;
  15 use chain::chainmonitor::MonitorUpdateId;
  16 use chain::channelmonitor;
  17 use chain::channelmonitor::MonitorEvent;
  18 use chain::transaction::OutPoint;
  19 use chain::keysinterface;
  20 use ln::features::{ChannelFeatures, InitFeatures, NodeFeatures};
  21 use ln::{msgs, wire};
  22 use ln::script::ShutdownScript;
  23 use routing::scoring::FixedPenaltyScorer;
  24 use util::enforcing_trait_impls::{EnforcingSigner, EnforcementState};
  25 use util::events;
  26 use util::logger::{Logger, Level, Record};
  27 use util::ser::{Readable, ReadableArgs, Writer, Writeable};
  28
  29 use bitcoin::blockdata::constants::genesis_block;
  30 use bitcoin::blockdata::transaction::{Transaction, TxOut};
  31 use bitcoin::blockdata::script::{Builder, Script};
  32 use bitcoin::blockdata::opcodes;
  33 use bitcoin::blockdata::block::Block;
  34 use bitcoin::network::constants::Network;
  35 use bitcoin::hash_types::{BlockHash, Txid};
  36
  37 use bitcoin::secp256k1::{SecretKey, PublicKey, Secp256k1, ecdsa::Signature, Scalar};
  38 use bitcoin::secp256k1::ecdh::SharedSecret;
  39 use bitcoin::secp256k1::ecdsa::RecoverableSignature;
  40
  41 use regex;
  42
  43 use io;
  44 use prelude::*;
  45 use core::time::Duration;
  46 use sync::{Mutex, Arc};
  47 use core::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
  48 use core::mem;
  49 use bitcoin::bech32::u5;
  50 use chain::keysinterface::{InMemorySigner, Recipient, KeyMaterial};
  51
  52 #[cfg(feature = "std")]
  53 use std::time::{SystemTime, UNIX_EPOCH};
  54 use bitcoin::Sequence;
  55
  56 pub struct TestVecWriter(pub Vec<u8>);
  57 impl Writer for TestVecWriter {
  58         fn write_all(&mut self, buf: &[u8]) -> Result<(), io::Error> {
  59                 self.0.extend_from_slice(buf);
  60                 Ok(())
  61         }
  62 }
  63
  64 pub struct TestFeeEstimator {
  65         pub sat_per_kw: Mutex<u32>,
  66 }
  67 impl chaininterface::FeeEstimator for TestFeeEstimator {
  68         fn get_est_sat_per_1000_weight(&self, _confirmation_target: ConfirmationTarget) -> u32 {
  69                 *self.sat_per_kw.lock().unwrap()
  70         }
  71 }
  72
  73 pub struct OnlyReadsKeysInterface {}
  74 impl keysinterface::KeysInterface for OnlyReadsKeysInterface {
  75         type Signer = EnforcingSigner;
  76
  77         fn get_node_secret(&self, _recipient: Recipient) -> Result<SecretKey, ()> { unreachable!(); }
  78         fn ecdh(&self, _recipient: Recipient, _other_key: &PublicKey, _tweak: Option<&Scalar>) -> Result<SharedSecret, ()> { unreachable!(); }
  79         fn get_inbound_payment_key_material(&self) -> KeyMaterial { unreachable!(); }
  80         fn get_destination_script(&self) -> Script { unreachable!(); }
  81         fn get_shutdown_scriptpubkey(&self) -> ShutdownScript { unreachable!(); }
  82         fn get_channel_signer(&self, _inbound: bool, _channel_value_satoshis: u64) -> EnforcingSigner { unreachable!(); }
  83         fn get_secure_random_bytes(&self) -> [u8; 32] { [0; 32] }
  84
  85         fn read_chan_signer(&self, mut reader: &[u8]) -> Result<Self::Signer, msgs::DecodeError> {
  86                 let dummy_sk = SecretKey::from_slice(&[42; 32]).unwrap();
  87                 let inner: InMemorySigner = ReadableArgs::read(&mut reader, dummy_sk)?;
  88                 let state = Arc::new(Mutex::new(EnforcementState::new()));
  89
  90                 Ok(EnforcingSigner::new_with_revoked(
  91                         inner,
  92                         state,
  93                         false
  94                 ))
  95         }
  96         fn sign_invoice(&self, _hrp_bytes: &[u8], _invoice_data: &[u5], _recipient: Recipient) -> Result<RecoverableSignature, ()> { unreachable!(); }
  97 }
  98
  99 pub struct TestChainMonitor<'a> {
 100         pub added_monitors: Mutex<Vec<(OutPoint, channelmonitor::ChannelMonitor<EnforcingSigner>)>>,
 101         pub monitor_updates: Mutex<HashMap<[u8; 32], Vec<channelmonitor::ChannelMonitorUpdate>>>,
 102         pub latest_monitor_update_id: Mutex<HashMap<[u8; 32], (OutPoint, u64, MonitorUpdateId)>>,
 103         pub chain_monitor: chainmonitor::ChainMonitor<EnforcingSigner, &'a TestChainSource, &'a chaininterface::BroadcasterInterface, &'a TestFeeEstimator, &'a TestLogger, &'a chainmonitor::Persist<EnforcingSigner>>,
 104         pub keys_manager: &'a TestKeysInterface,
 105         /// If this is set to Some(), the next update_channel call (not watch_channel) must be a
 106         /// ChannelForceClosed event for the given channel_id with should_broadcast set to the given
 107         /// boolean.
 108         pub expect_channel_force_closed: Mutex<Option<([u8; 32], bool)>>,
 109 }
 110 impl<'a> TestChainMonitor<'a> {
 111         pub fn new(chain_source: Option<&'a TestChainSource>, broadcaster: &'a chaininterface::BroadcasterInterface, logger: &'a TestLogger, fee_estimator: &'a TestFeeEstimator, persister: &'a chainmonitor::Persist<EnforcingSigner>, keys_manager: &'a TestKeysInterface) -> Self {
 112                 Self {
 113                         added_monitors: Mutex::new(Vec::new()),
 114                         monitor_updates: Mutex::new(HashMap::new()),
 115                         latest_monitor_update_id: Mutex::new(HashMap::new()),
 116                         chain_monitor: chainmonitor::ChainMonitor::new(chain_source, broadcaster, logger, fee_estimator, persister),
 117                         keys_manager,
 118                         expect_channel_force_closed: Mutex::new(None),
 119                 }
 120         }
 121
 122         pub fn complete_sole_pending_chan_update(&self, channel_id: &[u8; 32]) {
 123                 let (outpoint, _, latest_update) = self.latest_monitor_update_id.lock().unwrap().get(channel_id).unwrap().clone();
 124                 self.chain_monitor.channel_monitor_updated(outpoint, latest_update).unwrap();
 125         }
 126 }
 127 impl<'a> chain::Watch<EnforcingSigner> for TestChainMonitor<'a> {
 128         fn watch_channel(&self, funding_txo: OutPoint, monitor: channelmonitor::ChannelMonitor<EnforcingSigner>) -> Result<(), chain::ChannelMonitorUpdateErr> {
 129                 // At every point where we get a monitor update, we should be able to send a useful monitor
 130                 // to a watchtower and disk...
 131                 let mut w = TestVecWriter(Vec::new());
 132                 monitor.write(&mut w).unwrap();
 133                 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
 134                         &mut io::Cursor::new(&w.0), self.keys_manager).unwrap().1;
 135                 assert!(new_monitor == monitor);
 136                 self.latest_monitor_update_id.lock().unwrap().insert(funding_txo.to_channel_id(),
 137                         (funding_txo, monitor.get_latest_update_id(), MonitorUpdateId::from_new_monitor(&monitor)));
 138                 self.added_monitors.lock().unwrap().push((funding_txo, monitor));
 139                 self.chain_monitor.watch_channel(funding_txo, new_monitor)
 140         }
 141
 142         fn update_channel(&self, funding_txo: OutPoint, update: channelmonitor::ChannelMonitorUpdate) -> Result<(), chain::ChannelMonitorUpdateErr> {
 143                 // Every monitor update should survive roundtrip
 144                 let mut w = TestVecWriter(Vec::new());
 145                 update.write(&mut w).unwrap();
 146                 assert!(channelmonitor::ChannelMonitorUpdate::read(
 147                                 &mut io::Cursor::new(&w.0)).unwrap() == update);
 148
 149                 self.monitor_updates.lock().unwrap().entry(funding_txo.to_channel_id()).or_insert(Vec::new()).push(update.clone());
 150
 151                 if let Some(exp) = self.expect_channel_force_closed.lock().unwrap().take() {
 152                         assert_eq!(funding_txo.to_channel_id(), exp.0);
 153                         assert_eq!(update.updates.len(), 1);
 154                         if let channelmonitor::ChannelMonitorUpdateStep::ChannelForceClosed { should_broadcast } = update.updates[0] {
 155                                 assert_eq!(should_broadcast, exp.1);
 156                         } else { panic!(); }
 157                 }
 158
 159                 self.latest_monitor_update_id.lock().unwrap().insert(funding_txo.to_channel_id(),
 160                         (funding_txo, update.update_id, MonitorUpdateId::from_monitor_update(&update)));
 161                 let update_res = self.chain_monitor.update_channel(funding_txo, update);
 162                 // At every point where we get a monitor update, we should be able to send a useful monitor
 163                 // to a watchtower and disk...
 164                 let monitor = self.chain_monitor.get_monitor(funding_txo).unwrap();
 165                 w.0.clear();
 166                 monitor.write(&mut w).unwrap();
 167                 let new_monitor = <(BlockHash, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
 168                         &mut io::Cursor::new(&w.0), self.keys_manager).unwrap().1;
 169                 assert!(new_monitor == *monitor);
 170                 self.added_monitors.lock().unwrap().push((funding_txo, new_monitor));
 171                 update_res
 172         }
 173
 174         fn release_pending_monitor_events(&self) -> Vec<(OutPoint, Vec<MonitorEvent>, Option<PublicKey>)> {
 175                 return self.chain_monitor.release_pending_monitor_events();
 176         }
 177 }
 178
 179 pub struct TestPersister {
 180         pub update_ret: Mutex<Result<(), chain::ChannelMonitorUpdateErr>>,
 181         /// If this is set to Some(), after the next return, we'll always return this until update_ret
 182         /// is changed:
 183         pub next_update_ret: Mutex<Option<Result<(), chain::ChannelMonitorUpdateErr>>>,
 184         /// When we get an update_persisted_channel call with no ChannelMonitorUpdate, we insert the
 185         /// MonitorUpdateId here.
 186         pub chain_sync_monitor_persistences: Mutex<HashMap<OutPoint, HashSet<MonitorUpdateId>>>,
 187         /// When we get an update_persisted_channel call *with* a ChannelMonitorUpdate, we insert the
 188         /// MonitorUpdateId here.
 189         pub offchain_monitor_updates: Mutex<HashMap<OutPoint, HashSet<MonitorUpdateId>>>,
 190 }
 191 impl TestPersister {
 192         pub fn new() -> Self {
 193                 Self {
 194                         update_ret: Mutex::new(Ok(())),
 195                         next_update_ret: Mutex::new(None),
 196                         chain_sync_monitor_persistences: Mutex::new(HashMap::new()),
 197                         offchain_monitor_updates: Mutex::new(HashMap::new()),
 198                 }
 199         }
 200
 201         pub fn set_update_ret(&self, ret: Result<(), chain::ChannelMonitorUpdateErr>) {
 202                 *self.update_ret.lock().unwrap() = ret;
 203         }
 204
 205         pub fn set_next_update_ret(&self, next_ret: Option<Result<(), chain::ChannelMonitorUpdateErr>>) {
 206                 *self.next_update_ret.lock().unwrap() = next_ret;
 207         }
 208 }
 209 impl<Signer: keysinterface::Sign> chainmonitor::Persist<Signer> for TestPersister {
 210         fn persist_new_channel(&self, _funding_txo: OutPoint, _data: &channelmonitor::ChannelMonitor<Signer>, _id: MonitorUpdateId) -> Result<(), chain::ChannelMonitorUpdateErr> {
 211                 let ret = self.update_ret.lock().unwrap().clone();
 212                 if let Some(next_ret) = self.next_update_ret.lock().unwrap().take() {
 213                         *self.update_ret.lock().unwrap() = next_ret;
 214                 }
 215                 ret
 216         }
 217
 218         fn update_persisted_channel(&self, funding_txo: OutPoint, update: &Option<channelmonitor::ChannelMonitorUpdate>, _data: &channelmonitor::ChannelMonitor<Signer>, update_id: MonitorUpdateId) -> Result<(), chain::ChannelMonitorUpdateErr> {
 219                 let ret = self.update_ret.lock().unwrap().clone();
 220                 if let Some(next_ret) = self.next_update_ret.lock().unwrap().take() {
 221                         *self.update_ret.lock().unwrap() = next_ret;
 222                 }
 223                 if update.is_none() {
 224                         self.chain_sync_monitor_persistences.lock().unwrap().entry(funding_txo).or_insert(HashSet::new()).insert(update_id);
 225                 } else {
 226                         self.offchain_monitor_updates.lock().unwrap().entry(funding_txo).or_insert(HashSet::new()).insert(update_id);
 227                 }
 228                 ret
 229         }
 230 }
 231
 232 pub struct TestBroadcaster {
 233         pub txn_broadcasted: Mutex<Vec<Transaction>>,
 234         pub blocks: Arc<Mutex<Vec<(Block, u32)>>>,
 235 }
 236
 237 impl TestBroadcaster {
 238         pub fn new(blocks: Arc<Mutex<Vec<(Block, u32)>>>) -> TestBroadcaster {
 239                 TestBroadcaster { txn_broadcasted: Mutex::new(Vec::new()), blocks }
 240         }
 241 }
 242
 243 impl chaininterface::BroadcasterInterface for TestBroadcaster {
 244         fn broadcast_transaction(&self, tx: &Transaction) {
 245                 let lock_time = tx.lock_time.0;
 246                 assert!(lock_time < 1_500_000_000);
 247                 if lock_time > self.blocks.lock().unwrap().len() as u32 + 1 && lock_time < 500_000_000 {
 248                         for inp in tx.input.iter() {
 249                                 if inp.sequence != Sequence::MAX {
 250                                         panic!("We should never broadcast a transaction before its locktime ({})!", tx.lock_time);
 251                                 }
 252                         }
 253                 }
 254                 self.txn_broadcasted.lock().unwrap().push(tx.clone());
 255         }
 256 }
 257
 258 pub struct TestChannelMessageHandler {
 259         pub pending_events: Mutex<Vec<events::MessageSendEvent>>,
 260         expected_recv_msgs: Mutex<Option<Vec<wire::Message<()>>>>,
 261 }
 262
 263 impl TestChannelMessageHandler {
 264         pub fn new() -> Self {
 265                 TestChannelMessageHandler {
 266                         pending_events: Mutex::new(Vec::new()),
 267                         expected_recv_msgs: Mutex::new(None),
 268                 }
 269         }
 270
 271         #[cfg(test)]
 272         pub(crate) fn expect_receive_msg(&self, ev: wire::Message<()>) {
 273                 let mut expected_msgs = self.expected_recv_msgs.lock().unwrap();
 274                 if expected_msgs.is_none() { *expected_msgs = Some(Vec::new()); }
 275                 expected_msgs.as_mut().unwrap().push(ev);
 276         }
 277
 278         fn received_msg(&self, _ev: wire::Message<()>) {
 279                 let mut msgs = self.expected_recv_msgs.lock().unwrap();
 280                 if msgs.is_none() { return; }
 281                 assert!(!msgs.as_ref().unwrap().is_empty(), "Received message when we weren't expecting one");
 282                 #[cfg(test)]
 283                 assert_eq!(msgs.as_ref().unwrap()[0], _ev);
 284                 msgs.as_mut().unwrap().remove(0);
 285         }
 286 }
 287
 288 impl Drop for TestChannelMessageHandler {
 289         fn drop(&mut self) {
 290                 let l = self.expected_recv_msgs.lock().unwrap();
 291                 #[cfg(feature = "std")]
 292                 {
 293                         if !std::thread::panicking() {
 294                                 assert!(l.is_none() || l.as_ref().unwrap().is_empty());
 295                         }
 296                 }
 297         }
 298 }
 299
 300 impl msgs::ChannelMessageHandler for TestChannelMessageHandler {
 301         fn handle_open_channel(&self, _their_node_id: &PublicKey, _their_features: InitFeatures, msg: &msgs::OpenChannel) {
 302                 self.received_msg(wire::Message::OpenChannel(msg.clone()));
 303         }
 304         fn handle_accept_channel(&self, _their_node_id: &PublicKey, _their_features: InitFeatures, msg: &msgs::AcceptChannel) {
 305                 self.received_msg(wire::Message::AcceptChannel(msg.clone()));
 306         }
 307         fn handle_funding_created(&self, _their_node_id: &PublicKey, msg: &msgs::FundingCreated) {
 308                 self.received_msg(wire::Message::FundingCreated(msg.clone()));
 309         }
 310         fn handle_funding_signed(&self, _their_node_id: &PublicKey, msg: &msgs::FundingSigned) {
 311                 self.received_msg(wire::Message::FundingSigned(msg.clone()));
 312         }
 313         fn handle_channel_ready(&self, _their_node_id: &PublicKey, msg: &msgs::ChannelReady) {
 314                 self.received_msg(wire::Message::ChannelReady(msg.clone()));
 315         }
 316         fn handle_shutdown(&self, _their_node_id: &PublicKey, _their_features: &InitFeatures, msg: &msgs::Shutdown) {
 317                 self.received_msg(wire::Message::Shutdown(msg.clone()));
 318         }
 319         fn handle_closing_signed(&self, _their_node_id: &PublicKey, msg: &msgs::ClosingSigned) {
 320                 self.received_msg(wire::Message::ClosingSigned(msg.clone()));
 321         }
 322         fn handle_update_add_htlc(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateAddHTLC) {
 323                 self.received_msg(wire::Message::UpdateAddHTLC(msg.clone()));
 324         }
 325         fn handle_update_fulfill_htlc(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) {
 326                 self.received_msg(wire::Message::UpdateFulfillHTLC(msg.clone()));
 327         }
 328         fn handle_update_fail_htlc(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) {
 329                 self.received_msg(wire::Message::UpdateFailHTLC(msg.clone()));
 330         }
 331         fn handle_update_fail_malformed_htlc(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) {
 332                 self.received_msg(wire::Message::UpdateFailMalformedHTLC(msg.clone()));
 333         }
 334         fn handle_commitment_signed(&self, _their_node_id: &PublicKey, msg: &msgs::CommitmentSigned) {
 335                 self.received_msg(wire::Message::CommitmentSigned(msg.clone()));
 336         }
 337         fn handle_revoke_and_ack(&self, _their_node_id: &PublicKey, msg: &msgs::RevokeAndACK) {
 338                 self.received_msg(wire::Message::RevokeAndACK(msg.clone()));
 339         }
 340         fn handle_update_fee(&self, _their_node_id: &PublicKey, msg: &msgs::UpdateFee) {
 341                 self.received_msg(wire::Message::UpdateFee(msg.clone()));
 342         }
 343         fn handle_channel_update(&self, _their_node_id: &PublicKey, _msg: &msgs::ChannelUpdate) {
 344                 // Don't call `received_msg` here as `TestRoutingMessageHandler` generates these sometimes
 345         }
 346         fn handle_announcement_signatures(&self, _their_node_id: &PublicKey, msg: &msgs::AnnouncementSignatures) {
 347                 self.received_msg(wire::Message::AnnouncementSignatures(msg.clone()));
 348         }
 349         fn handle_channel_reestablish(&self, _their_node_id: &PublicKey, msg: &msgs::ChannelReestablish) {
 350                 self.received_msg(wire::Message::ChannelReestablish(msg.clone()));
 351         }
 352         fn peer_disconnected(&self, _their_node_id: &PublicKey, _no_connection_possible: bool) {}
 353         fn peer_connected(&self, _their_node_id: &PublicKey, _msg: &msgs::Init) {
 354                 // Don't bother with `received_msg` for Init as its auto-generated and we don't want to
 355                 // bother re-generating the expected Init message in all tests.
 356         }
 357         fn handle_error(&self, _their_node_id: &PublicKey, msg: &msgs::ErrorMessage) {
 358                 self.received_msg(wire::Message::Error(msg.clone()));
 359         }
 360         fn provided_node_features(&self) -> NodeFeatures {
 361                 NodeFeatures::empty()
 362         }
 363         fn provided_init_features(&self, _their_init_features: &PublicKey) -> InitFeatures {
 364                 InitFeatures::known_channel_features()
 365         }
 366 }
 367
 368 impl events::MessageSendEventsProvider for TestChannelMessageHandler {
 369         fn get_and_clear_pending_msg_events(&self) -> Vec<events::MessageSendEvent> {
 370                 let mut pending_events = self.pending_events.lock().unwrap();
 371                 let mut ret = Vec::new();
 372                 mem::swap(&mut ret, &mut *pending_events);
 373                 ret
 374         }
 375 }
 376
 377 fn get_dummy_channel_announcement(short_chan_id: u64) -> msgs::ChannelAnnouncement {
 378         use bitcoin::secp256k1::ffi::Signature as FFISignature;
 379         let secp_ctx = Secp256k1::new();
 380         let network = Network::Testnet;
 381         let node_1_privkey = SecretKey::from_slice(&[42; 32]).unwrap();
 382         let node_2_privkey = SecretKey::from_slice(&[41; 32]).unwrap();
 383         let node_1_btckey = SecretKey::from_slice(&[40; 32]).unwrap();
 384         let node_2_btckey = SecretKey::from_slice(&[39; 32]).unwrap();
 385         let unsigned_ann = msgs::UnsignedChannelAnnouncement {
 386                 features: ChannelFeatures::known(),
 387                 chain_hash: genesis_block(network).header.block_hash(),
 388                 short_channel_id: short_chan_id,
 389                 node_id_1: PublicKey::from_secret_key(&secp_ctx, &node_1_privkey),
 390                 node_id_2: PublicKey::from_secret_key(&secp_ctx, &node_2_privkey),
 391                 bitcoin_key_1: PublicKey::from_secret_key(&secp_ctx, &node_1_btckey),
 392                 bitcoin_key_2: PublicKey::from_secret_key(&secp_ctx, &node_2_btckey),
 393                 excess_data: Vec::new(),
 394         };
 395
 396         unsafe {
 397                 msgs::ChannelAnnouncement {
 398                         node_signature_1: Signature::from(FFISignature::new()),
 399                         node_signature_2: Signature::from(FFISignature::new()),
 400                         bitcoin_signature_1: Signature::from(FFISignature::new()),
 401                         bitcoin_signature_2: Signature::from(FFISignature::new()),
 402                         contents: unsigned_ann,
 403                 }
 404         }
 405 }
 406
 407 fn get_dummy_channel_update(short_chan_id: u64) -> msgs::ChannelUpdate {
 408         use bitcoin::secp256k1::ffi::Signature as FFISignature;
 409         let network = Network::Testnet;
 410         msgs::ChannelUpdate {
 411                 signature: Signature::from(unsafe { FFISignature::new() }),
 412                 contents: msgs::UnsignedChannelUpdate {
 413                         chain_hash: genesis_block(network).header.block_hash(),
 414                         short_channel_id: short_chan_id,
 415                         timestamp: 0,
 416                         flags: 0,
 417                         cltv_expiry_delta: 0,
 418                         htlc_minimum_msat: 0,
 419                         htlc_maximum_msat: msgs::MAX_VALUE_MSAT,
 420                         fee_base_msat: 0,
 421                         fee_proportional_millionths: 0,
 422                         excess_data: vec![],
 423                 }
 424         }
 425 }
 426
 427 pub struct TestRoutingMessageHandler {
 428         pub chan_upds_recvd: AtomicUsize,
 429         pub chan_anns_recvd: AtomicUsize,
 430         pub pending_events: Mutex<Vec<events::MessageSendEvent>>,
 431         pub request_full_sync: AtomicBool,
 432 }
 433
 434 impl TestRoutingMessageHandler {
 435         pub fn new() -> Self {
 436                 TestRoutingMessageHandler {
 437                         chan_upds_recvd: AtomicUsize::new(0),
 438                         chan_anns_recvd: AtomicUsize::new(0),
 439                         pending_events: Mutex::new(vec![]),
 440                         request_full_sync: AtomicBool::new(false),
 441                 }
 442         }
 443 }
 444 impl msgs::RoutingMessageHandler for TestRoutingMessageHandler {
 445         fn handle_node_announcement(&self, _msg: &msgs::NodeAnnouncement) -> Result<bool, msgs::LightningError> {
 446                 Err(msgs::LightningError { err: "".to_owned(), action: msgs::ErrorAction::IgnoreError })
 447         }
 448         fn handle_channel_announcement(&self, _msg: &msgs::ChannelAnnouncement) -> Result<bool, msgs::LightningError> {
 449                 self.chan_anns_recvd.fetch_add(1, Ordering::AcqRel);
 450                 Err(msgs::LightningError { err: "".to_owned(), action: msgs::ErrorAction::IgnoreError })
 451         }
 452         fn handle_channel_update(&self, _msg: &msgs::ChannelUpdate) -> Result<bool, msgs::LightningError> {
 453                 self.chan_upds_recvd.fetch_add(1, Ordering::AcqRel);
 454                 Err(msgs::LightningError { err: "".to_owned(), action: msgs::ErrorAction::IgnoreError })
 455         }
 456         fn get_next_channel_announcement(&self, starting_point: u64) -> Option<(msgs::ChannelAnnouncement, Option<msgs::ChannelUpdate>, Option<msgs::ChannelUpdate>)> {
 457                 let chan_upd_1 = get_dummy_channel_update(starting_point);
 458                 let chan_upd_2 = get_dummy_channel_update(starting_point);
 459                 let chan_ann = get_dummy_channel_announcement(starting_point);
 460
 461                 Some((chan_ann, Some(chan_upd_1), Some(chan_upd_2)))
 462         }
 463
 464         fn get_next_node_announcement(&self, _starting_point: Option<&PublicKey>) -> Option<msgs::NodeAnnouncement> {
 465                 None
 466         }
 467
 468         fn peer_connected(&self, their_node_id: &PublicKey, init_msg: &msgs::Init) {
 469                 if !init_msg.features.supports_gossip_queries() {
 470                         return ();
 471                 }
 472
 473                 let should_request_full_sync = self.request_full_sync.load(Ordering::Acquire);
 474
 475                 #[allow(unused_mut, unused_assignments)]
 476                 let mut gossip_start_time = 0;
 477                 #[cfg(feature = "std")]
 478                 {
 479                         gossip_start_time = SystemTime::now().duration_since(UNIX_EPOCH).expect("Time must be > 1970").as_secs();
 480                         if should_request_full_sync {
 481                                 gossip_start_time -= 60 * 60 * 24 * 7 * 2; // 2 weeks ago
 482                         } else {
 483                                 gossip_start_time -= 60 * 60; // an hour ago
 484                         }
 485                 }
 486
 487                 let mut pending_events = self.pending_events.lock().unwrap();
 488                 pending_events.push(events::MessageSendEvent::SendGossipTimestampFilter {
 489                         node_id: their_node_id.clone(),
 490                         msg: msgs::GossipTimestampFilter {
 491                                 chain_hash: genesis_block(Network::Testnet).header.block_hash(),
 492                                 first_timestamp: gossip_start_time as u32,
 493                                 timestamp_range: u32::max_value(),
 494                         },
 495                 });
 496         }
 497
 498         fn handle_reply_channel_range(&self, _their_node_id: &PublicKey, _msg: msgs::ReplyChannelRange) -> Result<(), msgs::LightningError> {
 499                 Ok(())
 500         }
 501
 502         fn handle_reply_short_channel_ids_end(&self, _their_node_id: &PublicKey, _msg: msgs::ReplyShortChannelIdsEnd) -> Result<(), msgs::LightningError> {
 503                 Ok(())
 504         }
 505
 506         fn handle_query_channel_range(&self, _their_node_id: &PublicKey, _msg: msgs::QueryChannelRange) -> Result<(), msgs::LightningError> {
 507                 Ok(())
 508         }
 509
 510         fn handle_query_short_channel_ids(&self, _their_node_id: &PublicKey, _msg: msgs::QueryShortChannelIds) -> Result<(), msgs::LightningError> {
 511                 Ok(())
 512         }
 513
 514         fn provided_init_features(&self, _their_init_features: &PublicKey) -> InitFeatures {
 515                 let mut features = InitFeatures::empty();
 516                 features.set_gossip_queries_optional();
 517                 features
 518         }
 519 }
 520
 521 impl events::MessageSendEventsProvider for TestRoutingMessageHandler {
 522         fn get_and_clear_pending_msg_events(&self) -> Vec<events::MessageSendEvent> {
 523                 let mut ret = Vec::new();
 524                 let mut pending_events = self.pending_events.lock().unwrap();
 525                 core::mem::swap(&mut ret, &mut pending_events);
 526                 ret
 527         }
 528 }
 529
 530 pub struct TestLogger {
 531         level: Level,
 532         pub(crate) id: String,
 533         pub lines: Mutex<HashMap<(String, String), usize>>,
 534 }
 535
 536 impl TestLogger {
 537         pub fn new() -> TestLogger {
 538                 Self::with_id("".to_owned())
 539         }
 540         pub fn with_id(id: String) -> TestLogger {
 541                 TestLogger {
 542                         level: Level::Trace,
 543                         id,
 544                         lines: Mutex::new(HashMap::new())
 545                 }
 546         }
 547         pub fn enable(&mut self, level: Level) {
 548                 self.level = level;
 549         }
 550         pub fn assert_log(&self, module: String, line: String, count: usize) {
 551                 let log_entries = self.lines.lock().unwrap();
 552                 assert_eq!(log_entries.get(&(module, line)), Some(&count));
 553         }
 554
 555         /// Search for the number of occurrence of the logged lines which
 556         /// 1. belongs to the specified module and
 557         /// 2. contains `line` in it.
 558         /// And asserts if the number of occurrences is the same with the given `count`
 559         pub fn assert_log_contains(&self, module: String, line: String, count: usize) {
 560                 let log_entries = self.lines.lock().unwrap();
 561                 let l: usize = log_entries.iter().filter(|&(&(ref m, ref l), _c)| {
 562                         m == &module && l.contains(line.as_str())
 563                 }).map(|(_, c) | { c }).sum();
 564                 assert_eq!(l, count)
 565         }
 566
 567         /// Search for the number of occurrences of logged lines which
 568         /// 1. belong to the specified module and
 569         /// 2. match the given regex pattern.
 570         /// Assert that the number of occurrences equals the given `count`
 571         pub fn assert_log_regex(&self, module: String, pattern: regex::Regex, count: usize) {
 572                 let log_entries = self.lines.lock().unwrap();
 573                 let l: usize = log_entries.iter().filter(|&(&(ref m, ref l), _c)| {
 574                         m == &module && pattern.is_match(&l)
 575                 }).map(|(_, c) | { c }).sum();
 576                 assert_eq!(l, count)
 577         }
 578 }
 579
 580 impl Logger for TestLogger {
 581         fn log(&self, record: &Record) {
 582                 *self.lines.lock().unwrap().entry((record.module_path.to_string(), format!("{}", record.args))).or_insert(0) += 1;
 583                 if record.level >= self.level {
 584                         #[cfg(feature = "std")]
 585                         println!("{:<5} {} [{} : {}, {}] {}", record.level.to_string(), self.id, record.module_path, record.file, record.line, record.args);
 586                 }
 587         }
 588 }
 589
 590 pub struct TestKeysInterface {
 591         pub backing: keysinterface::PhantomKeysManager,
 592         pub override_random_bytes: Mutex<Option<[u8; 32]>>,
 593         pub disable_revocation_policy_check: bool,
 594         enforcement_states: Mutex<HashMap<[u8;32], Arc<Mutex<EnforcementState>>>>,
 595         expectations: Mutex<Option<VecDeque<OnGetShutdownScriptpubkey>>>,
 596 }
 597
 598 impl keysinterface::KeysInterface for TestKeysInterface {
 599         type Signer = EnforcingSigner;
 600
 601         fn get_node_secret(&self, recipient: Recipient) -> Result<SecretKey, ()> {
 602                 self.backing.get_node_secret(recipient)
 603         }
 604         fn ecdh(&self, recipient: Recipient, other_key: &PublicKey, tweak: Option<&Scalar>) -> Result<SharedSecret, ()> {
 605                 self.backing.ecdh(recipient, other_key, tweak)
 606         }
 607         fn get_inbound_payment_key_material(&self) -> keysinterface::KeyMaterial {
 608                 self.backing.get_inbound_payment_key_material()
 609         }
 610         fn get_destination_script(&self) -> Script { self.backing.get_destination_script() }
 611
 612         fn get_shutdown_scriptpubkey(&self) -> ShutdownScript {
 613                 match &mut *self.expectations.lock().unwrap() {
 614                         None => self.backing.get_shutdown_scriptpubkey(),
 615                         Some(expectations) => match expectations.pop_front() {
 616                                 None => panic!("Unexpected get_shutdown_scriptpubkey"),
 617                                 Some(expectation) => expectation.returns,
 618                         },
 619                 }
 620         }
 621
 622         fn get_channel_signer(&self, inbound: bool, channel_value_satoshis: u64) -> EnforcingSigner {
 623                 let keys = self.backing.get_channel_signer(inbound, channel_value_satoshis);
 624                 let state = self.make_enforcement_state_cell(keys.commitment_seed);
 625                 EnforcingSigner::new_with_revoked(keys, state, self.disable_revocation_policy_check)
 626         }
 627
 628         fn get_secure_random_bytes(&self) -> [u8; 32] {
 629                 let override_random_bytes = self.override_random_bytes.lock().unwrap();
 630                 if let Some(bytes) = &*override_random_bytes {
 631                         return *bytes;
 632                 }
 633                 self.backing.get_secure_random_bytes()
 634         }
 635
 636         fn read_chan_signer(&self, buffer: &[u8]) -> Result<Self::Signer, msgs::DecodeError> {
 637                 let mut reader = io::Cursor::new(buffer);
 638
 639                 let inner: InMemorySigner = ReadableArgs::read(&mut reader, self.get_node_secret(Recipient::Node).unwrap())?;
 640                 let state = self.make_enforcement_state_cell(inner.commitment_seed);
 641
 642                 Ok(EnforcingSigner::new_with_revoked(
 643                         inner,
 644                         state,
 645                         self.disable_revocation_policy_check
 646                 ))
 647         }
 648
 649         fn sign_invoice(&self, hrp_bytes: &[u8], invoice_data: &[u5], recipient: Recipient) -> Result<RecoverableSignature, ()> {
 650                 self.backing.sign_invoice(hrp_bytes, invoice_data, recipient)
 651         }
 652 }
 653
 654 impl TestKeysInterface {
 655         pub fn new(seed: &[u8; 32], network: Network) -> Self {
 656                 let now = Duration::from_secs(genesis_block(network).header.time as u64);
 657                 Self {
 658                         backing: keysinterface::PhantomKeysManager::new(seed, now.as_secs(), now.subsec_nanos(), seed),
 659                         override_random_bytes: Mutex::new(None),
 660                         disable_revocation_policy_check: false,
 661                         enforcement_states: Mutex::new(HashMap::new()),
 662                         expectations: Mutex::new(None),
 663                 }
 664         }
 665
 666         /// Sets an expectation that [`keysinterface::KeysInterface::get_shutdown_scriptpubkey`] is
 667         /// called.
 668         pub fn expect(&self, expectation: OnGetShutdownScriptpubkey) -> &Self {
 669                 self.expectations.lock().unwrap()
 670                         .get_or_insert_with(|| VecDeque::new())
 671                         .push_back(expectation);
 672                 self
 673         }
 674
 675         pub fn derive_channel_keys(&self, channel_value_satoshis: u64, id: &[u8; 32]) -> EnforcingSigner {
 676                 let keys = self.backing.derive_channel_keys(channel_value_satoshis, id);
 677                 let state = self.make_enforcement_state_cell(keys.commitment_seed);
 678                 EnforcingSigner::new_with_revoked(keys, state, self.disable_revocation_policy_check)
 679         }
 680
 681         fn make_enforcement_state_cell(&self, commitment_seed: [u8; 32]) -> Arc<Mutex<EnforcementState>> {
 682                 let mut states = self.enforcement_states.lock().unwrap();
 683                 if !states.contains_key(&commitment_seed) {
 684                         let state = EnforcementState::new();
 685                         states.insert(commitment_seed, Arc::new(Mutex::new(state)));
 686                 }
 687                 let cell = states.get(&commitment_seed).unwrap();
 688                 Arc::clone(cell)
 689         }
 690 }
 691
 692 pub(crate) fn panicking() -> bool {
 693         #[cfg(feature = "std")]
 694         let panicking = ::std::thread::panicking();
 695         #[cfg(not(feature = "std"))]
 696         let panicking = false;
 697         return panicking;
 698 }
 699
 700 impl Drop for TestKeysInterface {
 701         fn drop(&mut self) {
 702                 if panicking() {
 703                         return;
 704                 }
 705
 706                 if let Some(expectations) = &*self.expectations.lock().unwrap() {
 707                         if !expectations.is_empty() {
 708                                 panic!("Unsatisfied expectations: {:?}", expectations);
 709                         }
 710                 }
 711         }
 712 }
 713
 714 /// An expectation that [`keysinterface::KeysInterface::get_shutdown_scriptpubkey`] was called and
 715 /// returns a [`ShutdownScript`].
 716 pub struct OnGetShutdownScriptpubkey {
 717         /// A shutdown script used to close a channel.
 718         pub returns: ShutdownScript,
 719 }
 720
 721 impl core::fmt::Debug for OnGetShutdownScriptpubkey {
 722         fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
 723                 f.debug_struct("OnGetShutdownScriptpubkey").finish()
 724         }
 725 }
 726
 727 pub struct TestChainSource {
 728         pub genesis_hash: BlockHash,
 729         pub utxo_ret: Mutex<Result<TxOut, chain::AccessError>>,
 730         pub watched_txn: Mutex<HashSet<(Txid, Script)>>,
 731         pub watched_outputs: Mutex<HashSet<(OutPoint, Script)>>,
 732 }
 733
 734 impl TestChainSource {
 735         pub fn new(network: Network) -> Self {
 736                 let script_pubkey = Builder::new().push_opcode(opcodes::OP_TRUE).into_script();
 737                 Self {
 738                         genesis_hash: genesis_block(network).block_hash(),
 739                         utxo_ret: Mutex::new(Ok(TxOut { value: u64::max_value(), script_pubkey })),
 740                         watched_txn: Mutex::new(HashSet::new()),
 741                         watched_outputs: Mutex::new(HashSet::new()),
 742                 }
 743         }
 744 }
 745
 746 impl chain::Access for TestChainSource {
 747         fn get_utxo(&self, genesis_hash: &BlockHash, _short_channel_id: u64) -> Result<TxOut, chain::AccessError> {
 748                 if self.genesis_hash != *genesis_hash {
 749                         return Err(chain::AccessError::UnknownChain);
 750                 }
 751
 752                 self.utxo_ret.lock().unwrap().clone()
 753         }
 754 }
 755
 756 impl chain::Filter for TestChainSource {
 757         fn register_tx(&self, txid: &Txid, script_pubkey: &Script) {
 758                 self.watched_txn.lock().unwrap().insert((*txid, script_pubkey.clone()));
 759         }
 760
 761         fn register_output(&self, output: WatchedOutput) {
 762                 self.watched_outputs.lock().unwrap().insert((output.outpoint, output.script_pubkey));
 763         }
 764 }
 765
 766 impl Drop for TestChainSource {
 767         fn drop(&mut self) {
 768                 if panicking() {
 769                         return;
 770                 }
 771         }
 772 }
 773
 774 /// A scorer useful in testing, when the passage of time isn't a concern.
 775 pub type TestScorer = FixedPenaltyScorer;