_ Git - ldk-java/blob - src/test/java/org/ldk/HumanObjectPeerTest.java

   1 package org.ldk;
   2
   3 import org.bitcoinj.core.*;
   4 import org.bitcoinj.core.Transaction;
   5 import org.bitcoinj.script.Script;
   6 import org.junit.jupiter.api.Test;
   7 import org.ldk.enums.LDKNetwork;
   8 import org.ldk.impl.bindings;
   9 import org.ldk.structs.*;
  10 import org.ldk.util.TwoTuple;
  11
  12 import java.lang.ref.WeakReference;
  13 import java.util.Arrays;
  14 import java.util.HashMap;
  15 import java.util.LinkedList;
  16
  17 class HumanObjectPeerTestInstance {
  18     private final boolean nice_close;
  19     private final boolean use_km_wrapper;
  20     private final boolean use_manual_watch;
  21     private final boolean reload_peers;
  22     private final boolean break_cross_peer_refs;
  23
  24     HumanObjectPeerTestInstance(boolean nice_close, boolean use_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs) {
  25         this.nice_close = nice_close;
  26         this.use_km_wrapper = use_km_wrapper;
  27         this.use_manual_watch = use_manual_watch;
  28         this.reload_peers = reload_peers;
  29         this.break_cross_peer_refs = break_cross_peer_refs;
  30     }
  31
  32     class Peer {
  33         KeysInterface manual_keysif(KeysInterface underlying_if) {
  34             return KeysInterface.new_impl(new KeysInterface.KeysInterfaceInterface() {
  35                 @Override public byte[] get_node_secret() { return underlying_if.get_node_secret(); }
  36                 @Override public byte[] get_destination_script() { return underlying_if.get_destination_script(); }
  37                 @Override public byte[] get_shutdown_pubkey() { return underlying_if.get_shutdown_pubkey(); }
  38
  39                 @Override
  40                 public ChannelKeys get_channel_keys(boolean inbound, long channel_value_satoshis) {
  41                     ChannelKeys underlying_ck = underlying_if.get_channel_keys(inbound, channel_value_satoshis);
  42                     ChannelKeys.ChannelKeysInterface cki = new ChannelKeys.ChannelKeysInterface() {
  43                         @Override
  44                         public byte[] get_per_commitment_point(long idx) {
  45                             return underlying_ck.get_per_commitment_point(idx);
  46                         }
  47
  48                         @Override
  49                         public byte[] release_commitment_secret(long idx) {
  50                             return underlying_ck.release_commitment_secret(idx);
  51                         }
  52
  53                         @Override
  54                         public TwoTuple<Long, Long> key_derivation_params() {
  55                             return new TwoTuple<Long, Long>((long)0, (long)1);
  56                         }
  57
  58                         @Override
  59                         public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_counterparty_commitment(CommitmentTransaction commitment_tx) {
  60                             return underlying_ck.sign_counterparty_commitment(commitment_tx);
  61                         }
  62
  63                         @Override
  64                         public Result_C2Tuple_SignatureCVec_SignatureZZNoneZ sign_holder_commitment_and_htlcs(HolderCommitmentTransaction holder_commitment_tx) {
  65                             return underlying_ck.sign_holder_commitment_and_htlcs(holder_commitment_tx);
  66                         }
  67
  68                         @Override
  69                         public Result_SignatureNoneZ sign_justice_transaction(byte[] justice_tx, long input, long amount, byte[] per_commitment_key, HTLCOutputInCommitment htlc) {
  70                             return underlying_ck.sign_justice_transaction(justice_tx, input, amount, per_commitment_key, htlc);
  71                         }
  72
  73                         @Override
  74                         public Result_SignatureNoneZ sign_counterparty_htlc_transaction(byte[] htlc_tx, long input, long amount, byte[] per_commitment_point, HTLCOutputInCommitment htlc) {
  75                             return underlying_ck.sign_counterparty_htlc_transaction(htlc_tx, input, amount, per_commitment_point, htlc);
  76                         }
  77
  78                         @Override
  79                         public Result_SignatureNoneZ sign_closing_transaction(byte[] closing_tx) {
  80                             return underlying_ck.sign_closing_transaction(closing_tx);
  81                         }
  82
  83                         @Override
  84                         public Result_SignatureNoneZ sign_channel_announcement(UnsignedChannelAnnouncement msg) {
  85                             return underlying_ck.sign_channel_announcement(msg);
  86                         }
  87
  88                         @Override
  89                         public void ready_channel(ChannelTransactionParameters params) {
  90                             underlying_ck.ready_channel(params);
  91                         }
  92
  93                         @Override
  94                         public byte[] write() {
  95                             return underlying_ck.write();
  96                         }
  97                     };
  98                     ChannelKeys resp = ChannelKeys.new_impl(cki, underlying_ck.get_pubkeys());
  99                     must_free_objs.add(new WeakReference<>(cki));
 100                     must_free_objs.add(new WeakReference<>(resp));
 101                     must_free_objs.add(new WeakReference<>(underlying_ck));
 102                     return resp;
 103                 }
 104
 105                 @Override
 106                 public byte[] get_secure_random_bytes() {
 107                     return underlying_if.get_secure_random_bytes();
 108                 }
 109
 110                 @Override
 111                 public Result_ChanKeySignerDecodeErrorZ read_chan_signer(byte[] reader) {
 112                     return underlying_if.read_chan_signer(reader);
 113                 }
 114             });
 115         }
 116
 117         Watch get_manual_watch() {
 118             Watch.WatchInterface watch_impl = new Watch.WatchInterface() {
 119                 public Result_NoneChannelMonitorUpdateErrZ watch_channel(OutPoint funding_txo, ChannelMonitor monitor) {
 120                     synchronized (monitors) {
 121                         assert monitors.put(Arrays.toString(funding_txo.get_txid()), monitor) == null;
 122                     }
 123                     return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK();
 124                 }
 125
 126                 public Result_NoneChannelMonitorUpdateErrZ update_channel(OutPoint funding_txo, ChannelMonitorUpdate update) {
 127                     synchronized (monitors) {
 128                         String txid = Arrays.toString(funding_txo.get_txid());
 129                         assert monitors.containsKey(txid);
 130                         Result_NoneMonitorUpdateErrorZ update_res = monitors.get(txid).update_monitor(update, tx_broadcaster, fee_estimator, logger);
 131                         assert update_res instanceof Result_NoneMonitorUpdateErrorZ.Result_NoneMonitorUpdateErrorZ_OK;
 132                     }
 133                     return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK();
 134                 }
 135
 136                 @Override
 137                 public MonitorEvent[] release_pending_monitor_events() {
 138                     synchronized (monitors) {
 139                         assert monitors.size() <= 1;
 140                         for (ChannelMonitor mon : monitors.values()) {
 141                             return mon.get_and_clear_pending_monitor_events();
 142                         }
 143                     }
 144                     return new MonitorEvent[0];
 145                 }
 146             };
 147             Watch watch = Watch.new_impl(watch_impl);
 148             must_free_objs.add(new WeakReference<>(watch_impl));
 149             must_free_objs.add(new WeakReference<>(watch));
 150             return watch;
 151         }
 152
 153         final byte seed;
 154         final Logger logger;
 155         final FeeEstimator fee_estimator;
 156         final BroadcasterInterface tx_broadcaster;
 157         final KeysInterface keys_interface;
 158         final ChainMonitor chain_monitor;
 159         final NetGraphMsgHandler router;
 160         final Watch chain_watch;
 161         ChannelManager chan_manager;
 162         EventsProvider chan_manager_events;
 163         PeerManager peer_manager;
 164         final HashMap<String, ChannelMonitor> monitors; // Wow I forgot just how terrible Java is - we can't put a byte array here.
 165         byte[] node_id;
 166         final LinkedList<byte[]> broadcast_set = new LinkedList<>();
 167
 168         private TwoTuple<OutPoint, byte[]> test_mon_roundtrip(ChannelMonitor mon) {
 169             // Because get_funding_txo() returns an OutPoint in a tuple that is a reference to an OutPoint inside the
 170             // ChannelMonitor, its a good test to ensure that the OutPoint isn't freed (or is cloned) before the
 171             // ChannelMonitor is. This used to be broken.
 172             Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ roundtrip_monitor = UtilMethods.constructor_BlockHashChannelMonitorZ_read(mon.write(), keys_interface);
 173             assert roundtrip_monitor instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 174             TwoTuple<OutPoint, byte[]> funding_txo = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) roundtrip_monitor).res.b.get_funding_txo();
 175             System.gc(); System.runFinalization(); // Give the GC a chance to run.
 176             return funding_txo;
 177         }
 178
 179         private Peer(Object _dummy, byte seed) {
 180             logger = Logger.new_impl((String arg) -> System.out.println(seed + ": " + arg));
 181             fee_estimator = FeeEstimator.new_impl((confirmation_target -> 253));
 182             tx_broadcaster = BroadcasterInterface.new_impl(tx -> {
 183                 broadcast_set.add(tx);
 184             });
 185             monitors = new HashMap<>();
 186             this.seed = seed;
 187             Persist persister = Persist.new_impl(new Persist.PersistInterface() {
 188                 @Override
 189                 public Result_NoneChannelMonitorUpdateErrZ persist_new_channel(OutPoint id, ChannelMonitor data) {
 190                     synchronized (monitors) {
 191                         String key = Arrays.toString(id.to_channel_id());
 192                         assert monitors.put(key, data) == null;
 193                         TwoTuple<OutPoint, byte[]> res = test_mon_roundtrip(data);
 194                         assert Arrays.equals(res.a.get_txid(), id.get_txid());
 195                         assert res.a.get_index() == id.get_index();
 196                     }
 197                     return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK();
 198                 }
 199
 200                 @Override
 201                 public Result_NoneChannelMonitorUpdateErrZ update_persisted_channel(OutPoint id, ChannelMonitorUpdate update, ChannelMonitor data) {
 202                     synchronized (monitors) {
 203                         String key = Arrays.toString(id.to_channel_id());
 204                         assert monitors.put(key, data) != null;
 205                         TwoTuple<OutPoint, byte[]> res = test_mon_roundtrip(data);
 206                         assert Arrays.equals(res.a.get_txid(), id.get_txid());
 207                         assert res.a.get_index() == id.get_index();
 208                     }
 209                     return new Result_NoneChannelMonitorUpdateErrZ.Result_NoneChannelMonitorUpdateErrZ_OK();
 210                 }
 211             });
 212             if (use_manual_watch) {
 213                 chain_watch = get_manual_watch();
 214                 chain_monitor = null;
 215             } else {
 216                 chain_monitor = ChainMonitor.constructor_new(null, tx_broadcaster, logger, fee_estimator, persister);
 217                 chain_watch = chain_monitor.as_Watch();
 218             }
 219
 220             byte[] key_seed = new byte[32];
 221             for (byte i = 0; i < 32; i++) {
 222                 key_seed[i] = (byte) (i ^ seed);
 223             }
 224             if (use_km_wrapper) {
 225                 KeysManager underlying = KeysManager.constructor_new(key_seed, LDKNetwork.LDKNetwork_Bitcoin, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000) & 0xffffffff);
 226                 this.keys_interface = manual_keysif(underlying.as_KeysInterface());
 227             } else {
 228                 KeysManager keys = KeysManager.constructor_new(key_seed, LDKNetwork.LDKNetwork_Bitcoin, System.currentTimeMillis() / 1000, (int) (System.currentTimeMillis() * 1000) & 0xffffffff);
 229                 this.keys_interface = keys.as_KeysInterface();
 230             }
 231             this.router = NetGraphMsgHandler.constructor_new(new byte[32], null, logger);
 232         }
 233         Peer(byte seed) {
 234             this(null, seed);
 235             this.chan_manager = ChannelManager.constructor_new(LDKNetwork.LDKNetwork_Bitcoin, FeeEstimator.new_impl(confirmation_target -> 0), chain_watch, tx_broadcaster, logger, this.keys_interface, UserConfig.constructor_default(), 1);
 236             this.node_id = chan_manager.get_our_node_id();
 237             this.chan_manager_events = chan_manager.as_EventsProvider();
 238
 239             byte[] random_data = new byte[32];
 240             for (byte i = 0; i < 32; i++) {
 241                 random_data[i] = (byte) ((i ^ seed) ^ 0xf0);
 242             }
 243             this.peer_manager = PeerManager.constructor_new(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger);
 244             System.gc();
 245         }
 246         Object ptr_to;
 247         Peer(Peer orig) {
 248             this(null, orig.seed);
 249             ChannelMonitor[] monitors = new ChannelMonitor[1];
 250             synchronized (monitors) {
 251                 assert orig.monitors.size() == 1;
 252                 monitors[0] = orig.monitors.values().stream().iterator().next();
 253                 if (break_cross_peer_refs) {
 254                     Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ res = UtilMethods.constructor_BlockHashChannelMonitorZ_read(monitors[0].write(), keys_interface);
 255                     assert res instanceof Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK;
 256                     monitors[0] = ((Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ_OK) res).res.b;
 257                 }
 258             }
 259             byte[] serialized = orig.chan_manager.write();
 260             Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ read_res =
 261                     UtilMethods.constructor_BlockHashChannelManagerZ_read(serialized, this.keys_interface, this.fee_estimator, this.chain_watch, this.tx_broadcaster, this.logger, UserConfig.constructor_default(), monitors);
 262             if (!break_cross_peer_refs && (use_manual_watch || use_km_wrapper)) {
 263                 // When we pass monitors[0] into chain_watch.watch_channel we create a reference from the new Peer to a
 264                 // field in the old peer, preventing freeing of the original Peer until the new Peer is freed. Thus, we
 265                 // shouldn't bother waiting for the original to be freed later on.
 266                 cross_reload_ref_pollution = true;
 267             }
 268             this.chain_watch.watch_channel(monitors[0].get_funding_txo().a, monitors[0]);
 269             assert read_res instanceof Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK;
 270             this.chan_manager = ((Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ_OK) read_res).res.b;
 271             this.node_id = chan_manager.get_our_node_id();
 272             this.chan_manager_events = chan_manager.as_EventsProvider();
 273
 274             if (cross_reload_ref_pollution) {
 275                 // This really, really needs to be handled at the bindings layer, but its rather complicated -
 276                 // ChannelSigners can be cloned and passed around without java being involved, resulting in them being
 277                 // owned by both one or more ChannelMonitors and a ChannelManager, with only one having proper pointers
 278                 // to the ChannelSigner. Ideally, the ChannelSigner would have a global reference to the Java
 279                 // implementation class, but that results in circular references. Instead, we need some ability to,
 280                 // while cloning ChannelSigners, add new references in the calling Java struct (ie ChannelMonitor) to
 281                 // the ChannelSigner.
 282                 this.ptr_to = orig.chan_manager;
 283             }
 284
 285             byte[] random_data = new byte[32];
 286             for (byte i = 0; i < 32; i++) {
 287                 random_data[i] = (byte) ((i ^ seed) ^ 0xf0);
 288             }
 289             this.peer_manager = PeerManager.constructor_new(chan_manager.as_ChannelMessageHandler(), router.as_RoutingMessageHandler(), keys_interface.get_node_secret(), random_data, logger);
 290         }
 291
 292         TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] connect_block(Block b, int height, long expected_monitor_update_len) {
 293             byte[] header = Arrays.copyOfRange(b.bitcoinSerialize(), 0, 80);
 294             TwoTuple<Long, byte[]>[] txn;
 295             if (b.hasTransactions()) {
 296                 assert b.getTransactions().size() == 1;
 297                 TwoTuple<Long, byte[]> txp = new TwoTuple<>((long) 1, b.getTransactions().get(0).bitcoinSerialize());
 298                 txn = new TwoTuple[]{txp};
 299             } else
 300                 txn = new TwoTuple[0];
 301             chan_manager.block_connected(header, txn, height);
 302             if (chain_monitor != null) {
 303                 chain_monitor.block_connected(header, txn, height);
 304             } else {
 305                 synchronized (monitors) {
 306                     assert monitors.size() == 1;
 307                     for (ChannelMonitor mon : monitors.values()) {
 308                         TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] ret = mon.block_connected(header, txn, height, tx_broadcaster, fee_estimator, logger);
 309                         assert ret.length == expected_monitor_update_len;
 310                         return ret;
 311                     }
 312                 }
 313             }
 314             return null;
 315         }
 316
 317         Route get_route(byte[] dest_node, ChannelDetails[] our_chans) {
 318             try (LockedNetworkGraph netgraph = this.router.read_locked_graph()) {
 319                 NetworkGraph graph = netgraph.graph();
 320                 long res = bindings.get_route(this.node_id, graph._test_only_get_ptr(), dest_node, new long[]{our_chans[0]._test_only_get_ptr()},
 321                         new long[0], 1000, 42, this.logger._test_only_get_ptr());
 322                 assert bindings.LDKCResult_RouteLightningErrorZ_result_ok(res);
 323                 byte[] serialized_route = bindings.Route_write(bindings.LDKCResult_RouteLightningErrorZ_get_ok(res));
 324                 must_free_objs.add(new WeakReference<>(serialized_route));
 325                 Result_RouteDecodeErrorZ copy = Route.constructor_read(serialized_route);
 326                 assert copy instanceof Result_RouteDecodeErrorZ.Result_RouteDecodeErrorZ_OK;
 327                 bindings.CResult_RouteLightningErrorZ_free(res);
 328                 return ((Result_RouteDecodeErrorZ.Result_RouteDecodeErrorZ_OK) copy).res;
 329             }
 330         }
 331     }
 332
 333     static class DescriptorHolder { SocketDescriptor val; }
 334
 335     boolean running = false;
 336     final LinkedList<Runnable> runqueue = new LinkedList();
 337     boolean ran = false;
 338     Thread t = new Thread(() -> {
 339             while (true) {
 340                 try {
 341                     Runnable r;
 342                     synchronized (runqueue) {
 343                         while (runqueue.isEmpty()) {
 344                             runqueue.wait();
 345                         }
 346                         running = true;
 347                         r = runqueue.pollFirst();
 348                     }
 349                     r.run();
 350                     synchronized (runqueue) {
 351                         running = false;
 352                         runqueue.notifyAll();
 353                     }
 354                 } catch (InterruptedException e) {
 355                     return;
 356                 }
 357             }
 358     });
 359     void wait_events_processed(Peer peer1, Peer peer2) {
 360         synchronized (runqueue) {
 361             ran = false;
 362         }
 363         while (true) {
 364             peer1.peer_manager.process_events();
 365             peer2.peer_manager.process_events();
 366             synchronized (runqueue) {
 367                 if (runqueue.isEmpty() && !running) {
 368                     if (ran) {
 369                         ran = false;
 370                         continue;
 371                     } else { break; }
 372                 }
 373                 try { runqueue.wait(); } catch (InterruptedException e) { assert false; }
 374             }
 375         }
 376     }
 377     void do_read_event(PeerManager pm, SocketDescriptor descriptor, byte[] data) {
 378         if (!t.isAlive()) t.start();
 379         synchronized (runqueue) {
 380             ran = true;
 381             runqueue.add(() -> {
 382                 Result_boolPeerHandleErrorZ res = pm.read_event(descriptor, data);
 383                 assert res instanceof Result_boolPeerHandleErrorZ.Result_boolPeerHandleErrorZ_OK;
 384             });
 385             runqueue.notifyAll();
 386         }
 387         must_free_objs.add(new WeakReference<>(data));
 388     }
 389
 390     void connect_peers(final Peer peer1, final Peer peer2) {
 391         DescriptorHolder descriptor1 = new DescriptorHolder();
 392         DescriptorHolder descriptor1ref = descriptor1;
 393         SocketDescriptor descriptor2 = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 394             @Override
 395             public long send_data(byte[] data, boolean resume_read) {
 396                 do_read_event(peer1.peer_manager, descriptor1ref.val, data);
 397                 return data.length;
 398             }
 399
 400             @Override public void disconnect_socket() { assert false; }
 401             @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 2; }
 402             @Override public long hash() { return 2; }
 403         });
 404
 405         descriptor1.val = SocketDescriptor.new_impl(new SocketDescriptor.SocketDescriptorInterface() {
 406             @Override
 407             public long send_data(byte[] data, boolean resume_read) {
 408                 do_read_event(peer2.peer_manager, descriptor2, data);
 409                 return data.length;
 410             }
 411
 412             @Override public void disconnect_socket() { assert false; }
 413             @Override public boolean eq(SocketDescriptor other_arg) { return other_arg.hash() == 1; }
 414             @Override public long hash() { return 1; }
 415         });
 416
 417         Result_CVec_u8ZPeerHandleErrorZ conn_res = peer1.peer_manager.new_outbound_connection(peer2.node_id, descriptor1.val);
 418         assert conn_res instanceof Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK;
 419
 420         Result_NonePeerHandleErrorZ inbound_conn_res = peer2.peer_manager.new_inbound_connection(descriptor2);
 421         assert inbound_conn_res instanceof Result_NonePeerHandleErrorZ.Result_NonePeerHandleErrorZ_OK;
 422         do_read_event(peer2.peer_manager, descriptor2, ((Result_CVec_u8ZPeerHandleErrorZ.Result_CVec_u8ZPeerHandleErrorZ_OK) conn_res).res);
 423     }
 424
 425     TestState do_test_message_handler() throws InterruptedException {
 426         Peer peer1 = new Peer((byte) 1);
 427         Peer peer2 = new Peer((byte) 2);
 428
 429         connect_peers(peer1, peer2);
 430         wait_events_processed(peer1, peer2);
 431
 432         Result_NoneAPIErrorZ cc_res = peer1.chan_manager.create_channel(peer2.node_id, 10000, 1000, 42, null);
 433         assert cc_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 434         wait_events_processed(peer1, peer2);
 435
 436         Event[] events = peer1.chan_manager_events.get_and_clear_pending_events();
 437         assert events.length == 1;
 438         assert events[0] instanceof Event.FundingGenerationReady;
 439         assert ((Event.FundingGenerationReady) events[0]).channel_value_satoshis == 10000;
 440         assert ((Event.FundingGenerationReady) events[0]).user_channel_id == 42;
 441         byte[] funding_spk = ((Event.FundingGenerationReady) events[0]).output_script;
 442         assert funding_spk.length == 34 && funding_spk[0] == 0 && funding_spk[1] == 32; // P2WSH
 443         byte[] chan_id = ((Event.FundingGenerationReady) events[0]).temporary_channel_id;
 444
 445         NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);
 446
 447         Transaction funding = new Transaction(bitcoinj_net);
 448         funding.addInput(new TransactionInput(bitcoinj_net, funding, new byte[0]));
 449         funding.getInputs().get(0).setWitness(new TransactionWitness(2)); // Make sure we don't complain about lack of witness
 450         funding.getInput(0).getWitness().setPush(0, new byte[]{0x1});
 451         funding.addOutput(Coin.SATOSHI.multiply(10000), new Script(funding_spk));
 452         peer1.chan_manager.funding_transaction_generated(chan_id, OutPoint.constructor_new(funding.getTxId().getReversedBytes(), (short) 0));
 453         wait_events_processed(peer1, peer2);
 454
 455         events = peer1.chan_manager_events.get_and_clear_pending_events();
 456         assert events.length == 1;
 457         assert events[0] instanceof Event.FundingBroadcastSafe;
 458         assert ((Event.FundingBroadcastSafe) events[0]).user_channel_id == 42;
 459
 460         Block b = new Block(bitcoinj_net, 2, Sha256Hash.ZERO_HASH, Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[]{funding}));
 461         peer1.connect_block(b, 1, 0);
 462         peer2.connect_block(b, 1, 0);
 463
 464         for (int height = 2; height < 10; height++) {
 465             b = new Block(bitcoinj_net, 2, b.getHash(), Sha256Hash.ZERO_HASH, 42, 0, 0, Arrays.asList(new Transaction[0]));
 466             peer1.connect_block(b, height, 0);
 467             peer2.connect_block(b, height, 0);
 468         }
 469         wait_events_processed(peer1, peer2);
 470
 471         peer1.chan_manager.list_channels();
 472         ChannelDetails[] peer1_chans = peer1.chan_manager.list_channels();
 473         ChannelDetails[] peer2_chans = peer2.chan_manager.list_channels();
 474         assert peer1_chans.length == 1;
 475         assert peer2_chans.length == 1;
 476         assert peer1_chans[0].get_channel_value_satoshis() == 10000;
 477         assert peer1_chans[0].get_is_live();
 478         assert Arrays.equals(peer1_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 479         assert Arrays.equals(peer2_chans[0].get_channel_id(), funding.getTxId().getReversedBytes());
 480
 481         byte[] payment_preimage = new byte[32];
 482         for (int i = 0; i < 32; i++) payment_preimage[i] = (byte) (i ^ 0x0f);
 483         byte[] payment_hash = Sha256Hash.hash(payment_preimage);
 484         Route route = peer1.get_route(peer2.node_id, peer1_chans);
 485         Result_NonePaymentSendFailureZ payment_res = peer1.chan_manager.send_payment(route, payment_hash, new byte[32]);
 486         assert payment_res instanceof Result_NonePaymentSendFailureZ.Result_NonePaymentSendFailureZ_OK;
 487         wait_events_processed(peer1, peer2);
 488
 489         if (reload_peers) {
 490             WeakReference<Peer> op1 = new WeakReference<Peer>(peer1);
 491             peer1 = new Peer(peer1);
 492             peer2 = new Peer(peer2);
 493             return new TestState(op1, peer1, peer2, payment_preimage, b.getHash());
 494         }
 495         return new TestState(null, peer1, peer2, payment_preimage, b.getHash());
 496     }
 497
 498     boolean cross_reload_ref_pollution = false;
 499     class TestState {
 500         private final WeakReference<Peer> ref_block;
 501         private final Peer peer1;
 502         private final Peer peer2;
 503         private final byte[] payment_preimage;
 504         public Sha256Hash best_blockhash;
 505
 506         public TestState(WeakReference<Peer> ref_block, Peer peer1, Peer peer2, byte[] payment_preimage, Sha256Hash best_blockhash) {
 507             this.ref_block = ref_block;
 508             this.peer1 = peer1;
 509             this.peer2 = peer2;
 510             this.payment_preimage = payment_preimage;
 511             this.best_blockhash = best_blockhash;
 512         }
 513     }
 514     void do_test_message_handler_b(TestState state) {
 515         GcCheck obj = new GcCheck();
 516         if (state.ref_block != null) {
 517             // Ensure the original peers get freed before we move on. Note that we have to be in a different function
 518             // scope to do so as the (at least current OpenJDK) JRE won't release anything created in the same scope.
 519             while (!cross_reload_ref_pollution && state.ref_block.get() != null) {
 520                 System.gc();
 521                 System.runFinalization();
 522             }
 523             connect_peers(state.peer1, state.peer2);
 524             wait_events_processed(state.peer1, state.peer2);
 525         }
 526
 527         Event[] events = state.peer2.chan_manager_events.get_and_clear_pending_events();
 528         assert events.length == 1;
 529         assert events[0] instanceof Event.PendingHTLCsForwardable;
 530         state.peer2.chan_manager.process_pending_htlc_forwards();
 531
 532         events = state.peer2.chan_manager_events.get_and_clear_pending_events();
 533         assert events.length == 1;
 534         assert events[0] instanceof Event.PaymentReceived;
 535         state.peer2.chan_manager.claim_funds(state.payment_preimage, new byte[32], ((Event.PaymentReceived) events[0]).amt);
 536         wait_events_processed(state.peer1, state.peer2);
 537
 538         events = state.peer1.chan_manager_events.get_and_clear_pending_events();
 539         assert events.length == 1;
 540         assert events[0] instanceof Event.PaymentSent;
 541         assert Arrays.equals(((Event.PaymentSent) events[0]).payment_preimage, state.payment_preimage);
 542         wait_events_processed(state.peer1, state.peer2);
 543
 544         ChannelDetails[] peer1_chans = state.peer1.chan_manager.list_channels();
 545
 546         if (nice_close) {
 547             Result_NoneAPIErrorZ close_res = state.peer1.chan_manager.close_channel(peer1_chans[0].get_channel_id());
 548             assert close_res instanceof Result_NoneAPIErrorZ.Result_NoneAPIErrorZ_OK;
 549             wait_events_processed(state.peer1, state.peer2);
 550
 551             assert state.peer1.broadcast_set.size() == 1;
 552             assert state.peer2.broadcast_set.size() == 1;
 553         } else {
 554             state.peer1.chan_manager.force_close_all_channels();
 555             wait_events_processed(state.peer1, state.peer2);
 556
 557             assert state.peer1.broadcast_set.size() == 1;
 558             assert state.peer2.broadcast_set.size() == 0;
 559
 560             NetworkParameters bitcoinj_net = NetworkParameters.fromID(NetworkParameters.ID_MAINNET);
 561             Transaction tx = new Transaction(bitcoinj_net, state.peer1.broadcast_set.getFirst());
 562             Block b = new Block(bitcoinj_net, 2, state.best_blockhash, Sha256Hash.ZERO_HASH, 42, 0, 0,
 563                     Arrays.asList(new Transaction[]{tx}));
 564             TwoTuple<byte[], TwoTuple<Integer, TxOut>[]>[] watch_outputs = state.peer2.connect_block(b, 1, 1);
 565             if (watch_outputs != null) { // We only process watch_outputs manually when we use a manually-build Watch impl
 566                 assert watch_outputs.length == 1;
 567                 assert Arrays.equals(watch_outputs[0].a, tx.getTxId().getReversedBytes());
 568                 assert watch_outputs[0].b.length == 1;
 569             }
 570
 571             // This used to be buggy and double-free, so go ahead and fetch them!
 572             for (ChannelMonitor mon : state.peer2.monitors.values()) {
 573                 byte[][] txn = mon.get_latest_holder_commitment_txn(state.peer2.logger);
 574             }
 575         }
 576     }
 577
 578     java.util.LinkedList<WeakReference<Object>> must_free_objs = new java.util.LinkedList();
 579     boolean gc_ran = false;
 580     class GcCheck {
 581         @Override
 582         protected void finalize() throws Throwable {
 583             gc_ran = true;
 584             super.finalize();
 585         }
 586     }
 587 }
 588 public class HumanObjectPeerTest {
 589     HumanObjectPeerTestInstance do_test_run(boolean nice_close, boolean use_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs) throws InterruptedException {
 590         HumanObjectPeerTestInstance instance = new HumanObjectPeerTestInstance(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs);
 591         HumanObjectPeerTestInstance.TestState state = instance.do_test_message_handler();
 592         instance.do_test_message_handler_b(state);
 593         return instance;
 594     }
 595     void do_test(boolean nice_close, boolean use_km_wrapper, boolean use_manual_watch, boolean reload_peers, boolean break_cross_peer_refs) throws InterruptedException {
 596         HumanObjectPeerTestInstance instance = do_test_run(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_peer_refs);
 597         while (!instance.gc_ran) {
 598             System.gc();
 599             System.runFinalization();
 600         }
 601         for (WeakReference<Object> o : instance.must_free_objs)
 602             assert o.get() == null;
 603     }
 604     @Test
 605     public void test_message_handler() throws InterruptedException {
 606         for (int i = 0; i < (1 << 5) - 1; i++) {
 607             boolean nice_close =       (i & (1 << 0)) != 0;
 608             boolean use_km_wrapper =   (i & (1 << 1)) != 0;
 609             boolean use_manual_watch = (i & (1 << 2)) != 0;
 610             boolean reload_peers =     (i & (1 << 3)) != 0;
 611             boolean break_cross_refs = (i & (1 << 4)) != 0;
 612             if (break_cross_refs && !reload_peers) {
 613                 // There are no cross refs to break without reloading peers.
 614                 continue;
 615             }
 616             System.err.println("Running test with flags " + i);
 617             do_test(nice_close, use_km_wrapper, use_manual_watch, reload_peers, break_cross_refs);
 618         }
 619     }
 620 }