_ 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::chaininterface;
  12 use chain::chaininterface::ConfirmationTarget;
  13 use chain::chainmonitor;
  14 use chain::channelmonitor;
  15 use chain::channelmonitor::MonitorEvent;
  16 use chain::transaction::OutPoint;
  17 use chain::keysinterface;
  18 use ln::features::{ChannelFeatures, InitFeatures};
  19 use ln::msgs;
  20 use ln::msgs::OptionalField;
  21 use util::enforcing_trait_impls::{EnforcingSigner, INITIAL_REVOKED_COMMITMENT_NUMBER};
  22 use util::events;
  23 use util::logger::{Logger, Level, Record};
  24 use util::ser::{Readable, ReadableArgs, Writer, Writeable};
  25
  26 use bitcoin::blockdata::constants::genesis_block;
  27 use bitcoin::blockdata::transaction::{Transaction, TxOut};
  28 use bitcoin::blockdata::script::{Builder, Script};
  29 use bitcoin::blockdata::opcodes;
  30 use bitcoin::network::constants::Network;
  31 use bitcoin::hash_types::{BlockHash, Txid};
  32
  33 use bitcoin::secp256k1::{SecretKey, PublicKey, Secp256k1, Signature};
  34
  35 use regex;
  36
  37 use std::time::Duration;
  38 use std::sync::{Mutex, Arc};
  39 use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
  40 use std::{cmp, mem};
  41 use std::collections::{HashMap, HashSet};
  42 use chain::keysinterface::InMemorySigner;
  43
  44 pub struct TestVecWriter(pub Vec<u8>);
  45 impl Writer for TestVecWriter {
  46         fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
  47                 self.0.extend_from_slice(buf);
  48                 Ok(())
  49         }
  50         fn size_hint(&mut self, size: usize) {
  51                 self.0.reserve_exact(size);
  52         }
  53 }
  54
  55 pub struct TestFeeEstimator {
  56         pub sat_per_kw: u32,
  57 }
  58 impl chaininterface::FeeEstimator for TestFeeEstimator {
  59         fn get_est_sat_per_1000_weight(&self, _confirmation_target: ConfirmationTarget) -> u32 {
  60                 self.sat_per_kw
  61         }
  62 }
  63
  64 pub struct OnlyReadsKeysInterface {}
  65 impl keysinterface::KeysInterface for OnlyReadsKeysInterface {
  66         type Signer = EnforcingSigner;
  67
  68         fn get_node_secret(&self) -> SecretKey { unreachable!(); }
  69         fn get_destination_script(&self) -> Script { unreachable!(); }
  70         fn get_shutdown_pubkey(&self) -> PublicKey { unreachable!(); }
  71         fn get_channel_signer(&self, _inbound: bool, _channel_value_satoshis: u64) -> EnforcingSigner { unreachable!(); }
  72         fn get_secure_random_bytes(&self) -> [u8; 32] { [0; 32] }
  73
  74         fn read_chan_signer(&self, reader: &[u8]) -> Result<Self::Signer, msgs::DecodeError> {
  75                 EnforcingSigner::read(&mut std::io::Cursor::new(reader))
  76         }
  77 }
  78
  79 pub struct TestChainMonitor<'a> {
  80         pub added_monitors: Mutex<Vec<(OutPoint, channelmonitor::ChannelMonitor<EnforcingSigner>)>>,
  81         pub latest_monitor_update_id: Mutex<HashMap<[u8; 32], (OutPoint, u64)>>,
  82         pub chain_monitor: chainmonitor::ChainMonitor<EnforcingSigner, &'a TestChainSource, &'a chaininterface::BroadcasterInterface, &'a TestFeeEstimator, &'a TestLogger, &'a channelmonitor::Persist<EnforcingSigner>>,
  83         pub keys_manager: &'a TestKeysInterface,
  84         pub update_ret: Mutex<Option<Result<(), channelmonitor::ChannelMonitorUpdateErr>>>,
  85         // If this is set to Some(), after the next return, we'll always return this until update_ret
  86         // is changed:
  87         pub next_update_ret: Mutex<Option<Result<(), channelmonitor::ChannelMonitorUpdateErr>>>,
  88         pub expect_channel_force_closed: Mutex<Option<([u8; 32], bool)>>,
  89 }
  90 impl<'a> TestChainMonitor<'a> {
  91         pub fn new(chain_source: Option<&'a TestChainSource>, broadcaster: &'a chaininterface::BroadcasterInterface, logger: &'a TestLogger, fee_estimator: &'a TestFeeEstimator, persister: &'a channelmonitor::Persist<EnforcingSigner>, keys_manager: &'a TestKeysInterface) -> Self {
  92                 Self {
  93                         added_monitors: Mutex::new(Vec::new()),
  94                         latest_monitor_update_id: Mutex::new(HashMap::new()),
  95                         chain_monitor: chainmonitor::ChainMonitor::new(chain_source, broadcaster, logger, fee_estimator, persister),
  96                         keys_manager,
  97                         update_ret: Mutex::new(None),
  98                         next_update_ret: Mutex::new(None),
  99                         expect_channel_force_closed: Mutex::new(None),
 100                 }
 101         }
 102 }
 103 impl<'a> chain::Watch<EnforcingSigner> for TestChainMonitor<'a> {
 104         fn watch_channel(&self, funding_txo: OutPoint, monitor: channelmonitor::ChannelMonitor<EnforcingSigner>) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
 105                 // At every point where we get a monitor update, we should be able to send a useful monitor
 106                 // to a watchtower and disk...
 107                 let mut w = TestVecWriter(Vec::new());
 108                 monitor.write(&mut w).unwrap();
 109                 let new_monitor = <(Option<BlockHash>, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
 110                         &mut ::std::io::Cursor::new(&w.0), self.keys_manager).unwrap().1;
 111                 assert!(new_monitor == monitor);
 112                 self.latest_monitor_update_id.lock().unwrap().insert(funding_txo.to_channel_id(), (funding_txo, monitor.get_latest_update_id()));
 113                 self.added_monitors.lock().unwrap().push((funding_txo, monitor));
 114                 let watch_res = self.chain_monitor.watch_channel(funding_txo, new_monitor);
 115
 116                 let ret = self.update_ret.lock().unwrap().clone();
 117                 if let Some(next_ret) = self.next_update_ret.lock().unwrap().take() {
 118                         *self.update_ret.lock().unwrap() = Some(next_ret);
 119                 }
 120                 if ret.is_some() {
 121                         assert!(watch_res.is_ok());
 122                         return ret.unwrap();
 123                 }
 124                 watch_res
 125         }
 126
 127         fn update_channel(&self, funding_txo: OutPoint, update: channelmonitor::ChannelMonitorUpdate) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
 128                 // Every monitor update should survive roundtrip
 129                 let mut w = TestVecWriter(Vec::new());
 130                 update.write(&mut w).unwrap();
 131                 assert!(channelmonitor::ChannelMonitorUpdate::read(
 132                                 &mut ::std::io::Cursor::new(&w.0)).unwrap() == update);
 133
 134                 if let Some(exp) = self.expect_channel_force_closed.lock().unwrap().take() {
 135                         assert_eq!(funding_txo.to_channel_id(), exp.0);
 136                         assert_eq!(update.updates.len(), 1);
 137                         if let channelmonitor::ChannelMonitorUpdateStep::ChannelForceClosed { should_broadcast } = update.updates[0] {
 138                                 assert_eq!(should_broadcast, exp.1);
 139                         } else { panic!(); }
 140                 }
 141
 142                 self.latest_monitor_update_id.lock().unwrap().insert(funding_txo.to_channel_id(), (funding_txo, update.update_id));
 143                 let update_res = self.chain_monitor.update_channel(funding_txo, update);
 144                 // At every point where we get a monitor update, we should be able to send a useful monitor
 145                 // to a watchtower and disk...
 146                 let monitors = self.chain_monitor.monitors.read().unwrap();
 147                 let monitor = monitors.get(&funding_txo).unwrap();
 148                 w.0.clear();
 149                 monitor.write(&mut w).unwrap();
 150                 let new_monitor = <(Option<BlockHash>, channelmonitor::ChannelMonitor<EnforcingSigner>)>::read(
 151                         &mut ::std::io::Cursor::new(&w.0), self.keys_manager).unwrap().1;
 152                 assert!(new_monitor == *monitor);
 153                 self.added_monitors.lock().unwrap().push((funding_txo, new_monitor));
 154
 155                 let ret = self.update_ret.lock().unwrap().clone();
 156                 if let Some(next_ret) = self.next_update_ret.lock().unwrap().take() {
 157                         *self.update_ret.lock().unwrap() = Some(next_ret);
 158                 }
 159                 if ret.is_some() {
 160                         assert!(update_res.is_ok());
 161                         return ret.unwrap();
 162                 }
 163                 update_res
 164         }
 165
 166         fn release_pending_monitor_events(&self) -> Vec<MonitorEvent> {
 167                 return self.chain_monitor.release_pending_monitor_events();
 168         }
 169 }
 170
 171 pub struct TestPersister {
 172         pub update_ret: Mutex<Result<(), channelmonitor::ChannelMonitorUpdateErr>>
 173 }
 174 impl TestPersister {
 175         pub fn new() -> Self {
 176                 Self {
 177                         update_ret: Mutex::new(Ok(()))
 178                 }
 179         }
 180
 181         pub fn set_update_ret(&self, ret: Result<(), channelmonitor::ChannelMonitorUpdateErr>) {
 182                 *self.update_ret.lock().unwrap() = ret;
 183         }
 184 }
 185 impl channelmonitor::Persist<EnforcingSigner> for TestPersister {
 186         fn persist_new_channel(&self, _funding_txo: OutPoint, _data: &channelmonitor::ChannelMonitor<EnforcingSigner>) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
 187                 self.update_ret.lock().unwrap().clone()
 188         }
 189
 190         fn update_persisted_channel(&self, _funding_txo: OutPoint, _update: &channelmonitor::ChannelMonitorUpdate, _data: &channelmonitor::ChannelMonitor<EnforcingSigner>) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
 191                 self.update_ret.lock().unwrap().clone()
 192         }
 193 }
 194
 195 pub struct TestBroadcaster {
 196         pub txn_broadcasted: Mutex<Vec<Transaction>>,
 197 }
 198 impl chaininterface::BroadcasterInterface for TestBroadcaster {
 199         fn broadcast_transaction(&self, tx: &Transaction) {
 200                 self.txn_broadcasted.lock().unwrap().push(tx.clone());
 201         }
 202 }
 203
 204 pub struct TestChannelMessageHandler {
 205         pub pending_events: Mutex<Vec<events::MessageSendEvent>>,
 206 }
 207
 208 impl TestChannelMessageHandler {
 209         pub fn new() -> Self {
 210                 TestChannelMessageHandler {
 211                         pending_events: Mutex::new(Vec::new()),
 212                 }
 213         }
 214 }
 215
 216 impl msgs::ChannelMessageHandler for TestChannelMessageHandler {
 217         fn handle_open_channel(&self, _their_node_id: &PublicKey, _their_features: InitFeatures, _msg: &msgs::OpenChannel) {}
 218         fn handle_accept_channel(&self, _their_node_id: &PublicKey, _their_features: InitFeatures, _msg: &msgs::AcceptChannel) {}
 219         fn handle_funding_created(&self, _their_node_id: &PublicKey, _msg: &msgs::FundingCreated) {}
 220         fn handle_funding_signed(&self, _their_node_id: &PublicKey, _msg: &msgs::FundingSigned) {}
 221         fn handle_funding_locked(&self, _their_node_id: &PublicKey, _msg: &msgs::FundingLocked) {}
 222         fn handle_shutdown(&self, _their_node_id: &PublicKey, _their_features: &InitFeatures, _msg: &msgs::Shutdown) {}
 223         fn handle_closing_signed(&self, _their_node_id: &PublicKey, _msg: &msgs::ClosingSigned) {}
 224         fn handle_update_add_htlc(&self, _their_node_id: &PublicKey, _msg: &msgs::UpdateAddHTLC) {}
 225         fn handle_update_fulfill_htlc(&self, _their_node_id: &PublicKey, _msg: &msgs::UpdateFulfillHTLC) {}
 226         fn handle_update_fail_htlc(&self, _their_node_id: &PublicKey, _msg: &msgs::UpdateFailHTLC) {}
 227         fn handle_update_fail_malformed_htlc(&self, _their_node_id: &PublicKey, _msg: &msgs::UpdateFailMalformedHTLC) {}
 228         fn handle_commitment_signed(&self, _their_node_id: &PublicKey, _msg: &msgs::CommitmentSigned) {}
 229         fn handle_revoke_and_ack(&self, _their_node_id: &PublicKey, _msg: &msgs::RevokeAndACK) {}
 230         fn handle_update_fee(&self, _their_node_id: &PublicKey, _msg: &msgs::UpdateFee) {}
 231         fn handle_announcement_signatures(&self, _their_node_id: &PublicKey, _msg: &msgs::AnnouncementSignatures) {}
 232         fn handle_channel_reestablish(&self, _their_node_id: &PublicKey, _msg: &msgs::ChannelReestablish) {}
 233         fn peer_disconnected(&self, _their_node_id: &PublicKey, _no_connection_possible: bool) {}
 234         fn peer_connected(&self, _their_node_id: &PublicKey, _msg: &msgs::Init) {}
 235         fn handle_error(&self, _their_node_id: &PublicKey, _msg: &msgs::ErrorMessage) {}
 236 }
 237
 238 impl events::MessageSendEventsProvider for TestChannelMessageHandler {
 239         fn get_and_clear_pending_msg_events(&self) -> Vec<events::MessageSendEvent> {
 240                 let mut pending_events = self.pending_events.lock().unwrap();
 241                 let mut ret = Vec::new();
 242                 mem::swap(&mut ret, &mut *pending_events);
 243                 ret
 244         }
 245 }
 246
 247 fn get_dummy_channel_announcement(short_chan_id: u64) -> msgs::ChannelAnnouncement {
 248         use bitcoin::secp256k1::ffi::Signature as FFISignature;
 249         let secp_ctx = Secp256k1::new();
 250         let network = Network::Testnet;
 251         let node_1_privkey = SecretKey::from_slice(&[42; 32]).unwrap();
 252         let node_2_privkey = SecretKey::from_slice(&[41; 32]).unwrap();
 253         let node_1_btckey = SecretKey::from_slice(&[40; 32]).unwrap();
 254         let node_2_btckey = SecretKey::from_slice(&[39; 32]).unwrap();
 255         let unsigned_ann = msgs::UnsignedChannelAnnouncement {
 256                 features: ChannelFeatures::known(),
 257                 chain_hash: genesis_block(network).header.block_hash(),
 258                 short_channel_id: short_chan_id,
 259                 node_id_1: PublicKey::from_secret_key(&secp_ctx, &node_1_privkey),
 260                 node_id_2: PublicKey::from_secret_key(&secp_ctx, &node_2_privkey),
 261                 bitcoin_key_1: PublicKey::from_secret_key(&secp_ctx, &node_1_btckey),
 262                 bitcoin_key_2: PublicKey::from_secret_key(&secp_ctx, &node_2_btckey),
 263                 excess_data: Vec::new(),
 264         };
 265
 266         unsafe {
 267                 msgs::ChannelAnnouncement {
 268                         node_signature_1: Signature::from(FFISignature::new()),
 269                         node_signature_2: Signature::from(FFISignature::new()),
 270                         bitcoin_signature_1: Signature::from(FFISignature::new()),
 271                         bitcoin_signature_2: Signature::from(FFISignature::new()),
 272                         contents: unsigned_ann,
 273                 }
 274         }
 275 }
 276
 277 fn get_dummy_channel_update(short_chan_id: u64) -> msgs::ChannelUpdate {
 278         use bitcoin::secp256k1::ffi::Signature as FFISignature;
 279         let network = Network::Testnet;
 280         msgs::ChannelUpdate {
 281                 signature: Signature::from(unsafe { FFISignature::new() }),
 282                 contents: msgs::UnsignedChannelUpdate {
 283                         chain_hash: genesis_block(network).header.block_hash(),
 284                         short_channel_id: short_chan_id,
 285                         timestamp: 0,
 286                         flags: 0,
 287                         cltv_expiry_delta: 0,
 288                         htlc_minimum_msat: 0,
 289                         htlc_maximum_msat: OptionalField::Absent,
 290                         fee_base_msat: 0,
 291                         fee_proportional_millionths: 0,
 292                         excess_data: vec![],
 293                 }
 294         }
 295 }
 296
 297 pub struct TestRoutingMessageHandler {
 298         pub chan_upds_recvd: AtomicUsize,
 299         pub chan_anns_recvd: AtomicUsize,
 300         pub chan_anns_sent: AtomicUsize,
 301         pub request_full_sync: AtomicBool,
 302 }
 303
 304 impl TestRoutingMessageHandler {
 305         pub fn new() -> Self {
 306                 TestRoutingMessageHandler {
 307                         chan_upds_recvd: AtomicUsize::new(0),
 308                         chan_anns_recvd: AtomicUsize::new(0),
 309                         chan_anns_sent: AtomicUsize::new(0),
 310                         request_full_sync: AtomicBool::new(false),
 311                 }
 312         }
 313 }
 314 impl msgs::RoutingMessageHandler for TestRoutingMessageHandler {
 315         fn handle_node_announcement(&self, _msg: &msgs::NodeAnnouncement) -> Result<bool, msgs::LightningError> {
 316                 Err(msgs::LightningError { err: "".to_owned(), action: msgs::ErrorAction::IgnoreError })
 317         }
 318         fn handle_channel_announcement(&self, _msg: &msgs::ChannelAnnouncement) -> Result<bool, msgs::LightningError> {
 319                 self.chan_anns_recvd.fetch_add(1, Ordering::AcqRel);
 320                 Err(msgs::LightningError { err: "".to_owned(), action: msgs::ErrorAction::IgnoreError })
 321         }
 322         fn handle_channel_update(&self, _msg: &msgs::ChannelUpdate) -> Result<bool, msgs::LightningError> {
 323                 self.chan_upds_recvd.fetch_add(1, Ordering::AcqRel);
 324                 Err(msgs::LightningError { err: "".to_owned(), action: msgs::ErrorAction::IgnoreError })
 325         }
 326         fn handle_htlc_fail_channel_update(&self, _update: &msgs::HTLCFailChannelUpdate) {}
 327         fn get_next_channel_announcements(&self, starting_point: u64, batch_amount: u8) -> Vec<(msgs::ChannelAnnouncement, Option<msgs::ChannelUpdate>, Option<msgs::ChannelUpdate>)> {
 328                 let mut chan_anns = Vec::new();
 329                 const TOTAL_UPDS: u64 = 100;
 330                 let end: u64 = cmp::min(starting_point + batch_amount as u64, TOTAL_UPDS - self.chan_anns_sent.load(Ordering::Acquire) as u64);
 331                 for i in starting_point..end {
 332                         let chan_upd_1 = get_dummy_channel_update(i);
 333                         let chan_upd_2 = get_dummy_channel_update(i);
 334                         let chan_ann = get_dummy_channel_announcement(i);
 335
 336                         chan_anns.push((chan_ann, Some(chan_upd_1), Some(chan_upd_2)));
 337                 }
 338
 339                 self.chan_anns_sent.fetch_add(chan_anns.len(), Ordering::AcqRel);
 340                 chan_anns
 341         }
 342
 343         fn get_next_node_announcements(&self, _starting_point: Option<&PublicKey>, _batch_amount: u8) -> Vec<msgs::NodeAnnouncement> {
 344                 Vec::new()
 345         }
 346
 347         fn sync_routing_table(&self, _their_node_id: &PublicKey, _init_msg: &msgs::Init) {}
 348
 349         fn handle_reply_channel_range(&self, _their_node_id: &PublicKey, _msg: msgs::ReplyChannelRange) -> Result<(), msgs::LightningError> {
 350                 Ok(())
 351         }
 352
 353         fn handle_reply_short_channel_ids_end(&self, _their_node_id: &PublicKey, _msg: msgs::ReplyShortChannelIdsEnd) -> Result<(), msgs::LightningError> {
 354                 Ok(())
 355         }
 356
 357         fn handle_query_channel_range(&self, _their_node_id: &PublicKey, _msg: msgs::QueryChannelRange) -> Result<(), msgs::LightningError> {
 358                 Ok(())
 359         }
 360
 361         fn handle_query_short_channel_ids(&self, _their_node_id: &PublicKey, _msg: msgs::QueryShortChannelIds) -> Result<(), msgs::LightningError> {
 362                 Ok(())
 363         }
 364 }
 365
 366 impl events::MessageSendEventsProvider for TestRoutingMessageHandler {
 367         fn get_and_clear_pending_msg_events(&self) -> Vec<events::MessageSendEvent> {
 368                 vec![]
 369         }
 370 }
 371
 372 pub struct TestLogger {
 373         level: Level,
 374         id: String,
 375         pub lines: Mutex<HashMap<(String, String), usize>>,
 376 }
 377
 378 impl TestLogger {
 379         pub fn new() -> TestLogger {
 380                 Self::with_id("".to_owned())
 381         }
 382         pub fn with_id(id: String) -> TestLogger {
 383                 TestLogger {
 384                         level: Level::Trace,
 385                         id,
 386                         lines: Mutex::new(HashMap::new())
 387                 }
 388         }
 389         pub fn enable(&mut self, level: Level) {
 390                 self.level = level;
 391         }
 392         pub fn assert_log(&self, module: String, line: String, count: usize) {
 393                 let log_entries = self.lines.lock().unwrap();
 394                 assert_eq!(log_entries.get(&(module, line)), Some(&count));
 395         }
 396
 397         /// Search for the number of occurrence of the logged lines which
 398         /// 1. belongs to the specified module and
 399         /// 2. contains `line` in it.
 400         /// And asserts if the number of occurrences is the same with the given `count`
 401         pub fn assert_log_contains(&self, module: String, line: String, count: usize) {
 402                 let log_entries = self.lines.lock().unwrap();
 403                 let l: usize = log_entries.iter().filter(|&(&(ref m, ref l), _c)| {
 404                         m == &module && l.contains(line.as_str())
 405                 }).map(|(_, c) | { c }).sum();
 406                 assert_eq!(l, count)
 407         }
 408
 409     /// Search for the number of occurrences of logged lines which
 410     /// 1. belong to the specified module and
 411     /// 2. match the given regex pattern.
 412     /// Assert that the number of occurrences equals the given `count`
 413         pub fn assert_log_regex(&self, module: String, pattern: regex::Regex, count: usize) {
 414                 let log_entries = self.lines.lock().unwrap();
 415                 let l: usize = log_entries.iter().filter(|&(&(ref m, ref l), _c)| {
 416                         m == &module && pattern.is_match(&l)
 417                 }).map(|(_, c) | { c }).sum();
 418                 assert_eq!(l, count)
 419         }
 420 }
 421
 422 impl Logger for TestLogger {
 423         fn log(&self, record: &Record) {
 424                 *self.lines.lock().unwrap().entry((record.module_path.to_string(), format!("{}", record.args))).or_insert(0) += 1;
 425                 if self.level >= record.level {
 426                         println!("{:<5} {} [{} : {}, {}] {}", record.level.to_string(), self.id, record.module_path, record.file, record.line, record.args);
 427                 }
 428         }
 429 }
 430
 431 pub struct TestKeysInterface {
 432         pub backing: keysinterface::KeysManager,
 433         pub override_session_priv: Mutex<Option<[u8; 32]>>,
 434         pub override_channel_id_priv: Mutex<Option<[u8; 32]>>,
 435         pub disable_revocation_policy_check: bool,
 436         revoked_commitments: Mutex<HashMap<[u8;32], Arc<Mutex<u64>>>>,
 437 }
 438
 439 impl keysinterface::KeysInterface for TestKeysInterface {
 440         type Signer = EnforcingSigner;
 441
 442         fn get_node_secret(&self) -> SecretKey { self.backing.get_node_secret() }
 443         fn get_destination_script(&self) -> Script { self.backing.get_destination_script() }
 444         fn get_shutdown_pubkey(&self) -> PublicKey { self.backing.get_shutdown_pubkey() }
 445         fn get_channel_signer(&self, inbound: bool, channel_value_satoshis: u64) -> EnforcingSigner {
 446                 let keys = self.backing.get_channel_signer(inbound, channel_value_satoshis);
 447                 let revoked_commitment = self.make_revoked_commitment_cell(keys.commitment_seed);
 448                 EnforcingSigner::new_with_revoked(keys, revoked_commitment, self.disable_revocation_policy_check)
 449         }
 450
 451         fn get_secure_random_bytes(&self) -> [u8; 32] {
 452                 let override_channel_id = self.override_channel_id_priv.lock().unwrap();
 453                 let override_session_key = self.override_session_priv.lock().unwrap();
 454                 if override_channel_id.is_some() && override_session_key.is_some() {
 455                         panic!("We don't know which override key to use!");
 456                 }
 457                 if let Some(key) = &*override_channel_id {
 458                         return *key;
 459                 }
 460                 if let Some(key) = &*override_session_key {
 461                         return *key;
 462                 }
 463                 self.backing.get_secure_random_bytes()
 464         }
 465
 466         fn read_chan_signer(&self, buffer: &[u8]) -> Result<Self::Signer, msgs::DecodeError> {
 467                 let mut reader = std::io::Cursor::new(buffer);
 468
 469                 let inner: InMemorySigner = Readable::read(&mut reader)?;
 470                 let revoked_commitment = self.make_revoked_commitment_cell(inner.commitment_seed);
 471
 472                 let last_commitment_number = Readable::read(&mut reader)?;
 473
 474                 Ok(EnforcingSigner {
 475                         inner,
 476                         last_commitment_number: Arc::new(Mutex::new(last_commitment_number)),
 477                         revoked_commitment,
 478                         disable_revocation_policy_check: self.disable_revocation_policy_check,
 479                 })
 480         }
 481 }
 482
 483
 484 impl TestKeysInterface {
 485         pub fn new(seed: &[u8; 32], network: Network) -> Self {
 486                 let now = Duration::from_secs(genesis_block(network).header.time as u64);
 487                 Self {
 488                         backing: keysinterface::KeysManager::new(seed, now.as_secs(), now.subsec_nanos()),
 489                         override_session_priv: Mutex::new(None),
 490                         override_channel_id_priv: Mutex::new(None),
 491                         disable_revocation_policy_check: false,
 492                         revoked_commitments: Mutex::new(HashMap::new()),
 493                 }
 494         }
 495         pub fn derive_channel_keys(&self, channel_value_satoshis: u64, id: &[u8; 32]) -> EnforcingSigner {
 496                 let keys = self.backing.derive_channel_keys(channel_value_satoshis, id);
 497                 let revoked_commitment = self.make_revoked_commitment_cell(keys.commitment_seed);
 498                 EnforcingSigner::new_with_revoked(keys, revoked_commitment, self.disable_revocation_policy_check)
 499         }
 500
 501         fn make_revoked_commitment_cell(&self, commitment_seed: [u8; 32]) -> Arc<Mutex<u64>> {
 502                 let mut revoked_commitments = self.revoked_commitments.lock().unwrap();
 503                 if !revoked_commitments.contains_key(&commitment_seed) {
 504                         revoked_commitments.insert(commitment_seed, Arc::new(Mutex::new(INITIAL_REVOKED_COMMITMENT_NUMBER)));
 505                 }
 506                 let cell = revoked_commitments.get(&commitment_seed).unwrap();
 507                 Arc::clone(cell)
 508         }
 509 }
 510
 511 pub struct TestChainSource {
 512         pub genesis_hash: BlockHash,
 513         pub utxo_ret: Mutex<Result<TxOut, chain::AccessError>>,
 514         pub watched_txn: Mutex<HashSet<(Txid, Script)>>,
 515         pub watched_outputs: Mutex<HashSet<(OutPoint, Script)>>,
 516 }
 517
 518 impl TestChainSource {
 519         pub fn new(network: Network) -> Self {
 520                 let script_pubkey = Builder::new().push_opcode(opcodes::OP_TRUE).into_script();
 521                 Self {
 522                         genesis_hash: genesis_block(network).block_hash(),
 523                         utxo_ret: Mutex::new(Ok(TxOut { value: u64::max_value(), script_pubkey })),
 524                         watched_txn: Mutex::new(HashSet::new()),
 525                         watched_outputs: Mutex::new(HashSet::new()),
 526                 }
 527         }
 528 }
 529
 530 impl chain::Access for TestChainSource {
 531         fn get_utxo(&self, genesis_hash: &BlockHash, _short_channel_id: u64) -> Result<TxOut, chain::AccessError> {
 532                 if self.genesis_hash != *genesis_hash {
 533                         return Err(chain::AccessError::UnknownChain);
 534                 }
 535
 536                 self.utxo_ret.lock().unwrap().clone()
 537         }
 538 }
 539
 540 impl chain::Filter for TestChainSource {
 541         fn register_tx(&self, txid: &Txid, script_pubkey: &Script) {
 542                 self.watched_txn.lock().unwrap().insert((*txid, script_pubkey.clone()));
 543         }
 544
 545         fn register_output(&self, outpoint: &OutPoint, script_pubkey: &Script) {
 546                 self.watched_outputs.lock().unwrap().insert((*outpoint, script_pubkey.clone()));
 547         }
 548 }