X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Forg%2Fldk%2Fstructs%2FChannelMonitor.java;h=5651deefa1d0464255f6809a0036c93974c57464;hb=07d5d868dfe064aadb28a7f7ca6002c16be9723d;hp=53d68dc2b3cbcca5ac8e1ded3416f0a6cffdb436;hpb=330ca992be304d0eac79bd59b411980dff294b03;p=ldk-java diff --git a/src/main/java/org/ldk/structs/ChannelMonitor.java b/src/main/java/org/ldk/structs/ChannelMonitor.java index 53d68dc2..5651deef 100644 --- a/src/main/java/org/ldk/structs/ChannelMonitor.java +++ b/src/main/java/org/ldk/structs/ChannelMonitor.java @@ -15,11 +15,6 @@ import javax.annotation.Nullable; * You MUST ensure that no ChannelMonitors for a given channel anywhere contain out-of-date * information and are actively monitoring the chain. * - * Pending Events or updated HTLCs which have not yet been read out by - * get_and_clear_pending_monitor_events or get_and_clear_pending_events are serialized to disk and - * reloaded at deserialize-time. Thus, you must ensure that, when handling events, all events - * gotten are fully handled before re-serializing the new state. - * * Note that the deserializer is only implemented for (BlockHash, ChannelMonitor), which * tells you the last block hash which was block_connect()ed. You MUST rescan any blocks along * the \"reorg path\" (ie disconnecting blocks until you find a common ancestor from both the @@ -69,7 +64,7 @@ public class ChannelMonitor extends CommonBase { * panics if the given update is not the next update by update_id. */ public Result_NoneNoneZ update_monitor(org.ldk.structs.ChannelMonitorUpdate updates, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) { - long ret = bindings.ChannelMonitor_update_monitor(this.ptr, updates == null ? 0 : updates.ptr, broadcaster == null ? 0 : broadcaster.ptr, fee_estimator == null ? 0 : fee_estimator.ptr, logger == null ? 0 : logger.ptr); + long ret = bindings.ChannelMonitor_update_monitor(this.ptr, updates == null ? 0 : updates.ptr, broadcaster.ptr, fee_estimator.ptr, logger.ptr); Reference.reachabilityFence(this); Reference.reachabilityFence(updates); Reference.reachabilityFence(broadcaster); @@ -97,11 +92,11 @@ public class ChannelMonitor extends CommonBase { /** * Gets the funding transaction outpoint of the channel this ChannelMonitor is monitoring for. */ - public TwoTuple_OutPointScriptZ get_funding_txo() { + public TwoTuple_OutPointCVec_u8ZZ get_funding_txo() { long ret = bindings.ChannelMonitor_get_funding_txo(this.ptr); Reference.reachabilityFence(this); if (ret >= 0 && ret <= 4096) { return null; } - TwoTuple_OutPointScriptZ ret_hu_conv = new TwoTuple_OutPointScriptZ(null, ret); + TwoTuple_OutPointCVec_u8ZZ ret_hu_conv = new TwoTuple_OutPointCVec_u8ZZ(null, ret); if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); }; return ret_hu_conv; } @@ -110,18 +105,18 @@ public class ChannelMonitor extends CommonBase { * Gets a list of txids, with their output scripts (in the order they appear in the * transaction), which we must learn about spends of via block_connected(). */ - public TwoTuple_TxidCVec_C2Tuple_u32ScriptZZZ[] get_outputs_to_watch() { + public TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ[] get_outputs_to_watch() { long[] ret = bindings.ChannelMonitor_get_outputs_to_watch(this.ptr); Reference.reachabilityFence(this); - int ret_conv_40_len = ret.length; - TwoTuple_TxidCVec_C2Tuple_u32ScriptZZZ[] ret_conv_40_arr = new TwoTuple_TxidCVec_C2Tuple_u32ScriptZZZ[ret_conv_40_len]; - for (int o = 0; o < ret_conv_40_len; o++) { - long ret_conv_40 = ret[o]; - TwoTuple_TxidCVec_C2Tuple_u32ScriptZZZ ret_conv_40_hu_conv = new TwoTuple_TxidCVec_C2Tuple_u32ScriptZZZ(null, ret_conv_40); - if (ret_conv_40_hu_conv != null) { ret_conv_40_hu_conv.ptrs_to.add(this); }; - ret_conv_40_arr[o] = ret_conv_40_hu_conv; + int ret_conv_52_len = ret.length; + TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ[] ret_conv_52_arr = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ[ret_conv_52_len]; + for (int a = 0; a < ret_conv_52_len; a++) { + long ret_conv_52 = ret[a]; + TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ ret_conv_52_hu_conv = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32CVec_u8ZZZZ(null, ret_conv_52); + if (ret_conv_52_hu_conv != null) { ret_conv_52_hu_conv.ptrs_to.add(this); }; + ret_conv_52_arr[a] = ret_conv_52_hu_conv; } - return ret_conv_40_arr; + return ret_conv_52_arr; } /** @@ -130,7 +125,7 @@ public class ChannelMonitor extends CommonBase { * have been registered. */ public void load_outputs_to_watch(org.ldk.structs.Filter filter) { - bindings.ChannelMonitor_load_outputs_to_watch(this.ptr, filter == null ? 0 : filter.ptr); + bindings.ChannelMonitor_load_outputs_to_watch(this.ptr, filter.ptr); Reference.reachabilityFence(this); Reference.reachabilityFence(filter); if (this != null) { this.ptrs_to.add(filter); }; @@ -155,27 +150,120 @@ public class ChannelMonitor extends CommonBase { } /** - * Gets the list of pending events which were generated by previous actions, clearing the list - * in the process. + * Processes [`SpendableOutputs`] events produced from each [`ChannelMonitor`] upon maturity. + * + * For channels featuring anchor outputs, this method will also process [`BumpTransaction`] + * events produced from each [`ChannelMonitor`] while there is a balance to claim onchain + * within each channel. As the confirmation of a commitment transaction may be critical to the + * safety of funds, we recommend invoking this every 30 seconds, or lower if running in an + * environment with spotty connections, like on mobile. + * + * An [`EventHandler`] may safely call back to the provider, though this shouldn't be needed in + * order to handle these events. + * + * [`SpendableOutputs`]: crate::events::Event::SpendableOutputs + * [`BumpTransaction`]: crate::events::Event::BumpTransaction + */ + public void process_pending_events(org.ldk.structs.EventHandler handler) { + bindings.ChannelMonitor_process_pending_events(this.ptr, handler.ptr); + Reference.reachabilityFence(this); + Reference.reachabilityFence(handler); + if (this != null) { this.ptrs_to.add(handler); }; + } + + /** + * Gets the counterparty's initial commitment transaction. The returned commitment + * transaction is unsigned. This is intended to be called during the initial persistence of + * the monitor (inside an implementation of [`Persist::persist_new_channel`]), to allow for + * watchtowers in the persistence pipeline to have enough data to form justice transactions. + * + * This is similar to [`Self::counterparty_commitment_txs_from_update`], except + * that for the initial commitment transaction, we don't have a corresponding update. + * + * This will only return `Some` for channel monitors that have been created after upgrading + * to LDK 0.0.117+. + * + * [`Persist::persist_new_channel`]: crate::chain::chainmonitor::Persist::persist_new_channel + * + * Note that the return value (or a relevant inner pointer) may be NULL or all-0s to represent None + */ + @Nullable + public CommitmentTransaction initial_counterparty_commitment_tx() { + long ret = bindings.ChannelMonitor_initial_counterparty_commitment_tx(this.ptr); + Reference.reachabilityFence(this); + if (ret >= 0 && ret <= 4096) { return null; } + org.ldk.structs.CommitmentTransaction ret_hu_conv = null; if (ret < 0 || ret > 4096) { ret_hu_conv = new org.ldk.structs.CommitmentTransaction(null, ret); } + if (ret_hu_conv != null) { ret_hu_conv.ptrs_to.add(this); }; + return ret_hu_conv; + } + + /** + * Gets all of the counterparty commitment transactions provided by the given update. This + * may be empty if the update doesn't include any new counterparty commitments. Returned + * commitment transactions are unsigned. + * + * This is provided so that watchtower clients in the persistence pipeline are able to build + * justice transactions for each counterparty commitment upon each update. It's intended to be + * used within an implementation of [`Persist::update_persisted_channel`], which is provided + * with a monitor and an update. Once revoked, signing a justice transaction can be done using + * [`Self::sign_to_local_justice_tx`]. + * + * It is expected that a watchtower client may use this method to retrieve the latest counterparty + * commitment transaction(s), and then hold the necessary data until a later update in which + * the monitor has been updated with the corresponding revocation data, at which point the + * monitor can sign the justice transaction. * - * This is called by the [`EventsProvider::process_pending_events`] implementation for - * [`ChainMonitor`]. + * This will only return a non-empty list for monitor updates that have been created after + * upgrading to LDK 0.0.117+. Note that no restriction lies on the monitors themselves, which + * may have been created prior to upgrading. * - * [`EventsProvider::process_pending_events`]: crate::util::events::EventsProvider::process_pending_events - * [`ChainMonitor`]: crate::chain::chainmonitor::ChainMonitor + * [`Persist::update_persisted_channel`]: crate::chain::chainmonitor::Persist::update_persisted_channel */ - public Event[] get_and_clear_pending_events() { - long[] ret = bindings.ChannelMonitor_get_and_clear_pending_events(this.ptr); + public CommitmentTransaction[] counterparty_commitment_txs_from_update(org.ldk.structs.ChannelMonitorUpdate update) { + long[] ret = bindings.ChannelMonitor_counterparty_commitment_txs_from_update(this.ptr, update == null ? 0 : update.ptr); Reference.reachabilityFence(this); - int ret_conv_7_len = ret.length; - Event[] ret_conv_7_arr = new Event[ret_conv_7_len]; - for (int h = 0; h < ret_conv_7_len; h++) { - long ret_conv_7 = ret[h]; - org.ldk.structs.Event ret_conv_7_hu_conv = org.ldk.structs.Event.constr_from_ptr(ret_conv_7); - if (ret_conv_7_hu_conv != null) { ret_conv_7_hu_conv.ptrs_to.add(this); }; - ret_conv_7_arr[h] = ret_conv_7_hu_conv; + Reference.reachabilityFence(update); + int ret_conv_23_len = ret.length; + CommitmentTransaction[] ret_conv_23_arr = new CommitmentTransaction[ret_conv_23_len]; + for (int x = 0; x < ret_conv_23_len; x++) { + long ret_conv_23 = ret[x]; + org.ldk.structs.CommitmentTransaction ret_conv_23_hu_conv = null; if (ret_conv_23 < 0 || ret_conv_23 > 4096) { ret_conv_23_hu_conv = new org.ldk.structs.CommitmentTransaction(null, ret_conv_23); } + if (ret_conv_23_hu_conv != null) { ret_conv_23_hu_conv.ptrs_to.add(this); }; + ret_conv_23_arr[x] = ret_conv_23_hu_conv; } - return ret_conv_7_arr; + if (this != null) { this.ptrs_to.add(update); }; + return ret_conv_23_arr; + } + + /** + * Wrapper around [`EcdsaChannelSigner::sign_justice_revoked_output`] to make + * signing the justice transaction easier for implementors of + * [`chain::chainmonitor::Persist`]. On success this method returns the provided transaction + * signing the input at `input_idx`. This method will only produce a valid signature for + * a transaction spending the `to_local` output of a commitment transaction, i.e. this cannot + * be used for revoked HTLC outputs. + * + * `Value` is the value of the output being spent by the input at `input_idx`, committed + * in the BIP 143 signature. + * + * This method will only succeed if this monitor has received the revocation secret for the + * provided `commitment_number`. If a commitment number is provided that does not correspond + * to the commitment transaction being revoked, this will return a signed transaction, but + * the signature will not be valid. + * + * [`EcdsaChannelSigner::sign_justice_revoked_output`]: crate::sign::EcdsaChannelSigner::sign_justice_revoked_output + * [`Persist`]: crate::chain::chainmonitor::Persist + */ + public Result_TransactionNoneZ sign_to_local_justice_tx(byte[] justice_tx, long input_idx, long value, long commitment_number) { + long ret = bindings.ChannelMonitor_sign_to_local_justice_tx(this.ptr, justice_tx, input_idx, value, commitment_number); + Reference.reachabilityFence(this); + Reference.reachabilityFence(justice_tx); + Reference.reachabilityFence(input_idx); + Reference.reachabilityFence(value); + Reference.reachabilityFence(commitment_number); + if (ret >= 0 && ret <= 4096) { return null; } + Result_TransactionNoneZ ret_hu_conv = Result_TransactionNoneZ.constr_from_ptr(ret); + return ret_hu_conv; } /** @@ -194,24 +282,23 @@ public class ChannelMonitor extends CommonBase { } /** - * Used by ChannelManager deserialization to broadcast the latest holder state if its copy of - * the Channel was out-of-date. + * Used by [`ChannelManager`] deserialization to broadcast the latest holder state if its copy + * of the channel state was out-of-date. * * You may also use this to broadcast the latest local commitment transaction, either because - * a monitor update failed with [`ChannelMonitorUpdateStatus::PermanentFailure`] or because we've - * fallen behind (i.e. we've received proof that our counterparty side knows a revocation - * secret we gave them that they shouldn't know). + * a monitor update failed or because we've fallen behind (i.e. we've received proof that our + * counterparty side knows a revocation secret we gave them that they shouldn't know). * * Broadcasting these transactions in the second case is UNSAFE, as they allow counterparty * side to punish you. Nevertheless you may want to broadcast them if counterparty doesn't * close channel with their commitment transaction after a substantial amount of time. Best * may be to contact the other node operator out-of-band to coordinate other options available - * to you. In any-case, the choice is up to you. + * to you. * - * [`ChannelMonitorUpdateStatus::PermanentFailure`]: super::ChannelMonitorUpdateStatus::PermanentFailure + * [`ChannelManager`]: crate::ln::channelmanager::ChannelManager */ public byte[][] get_latest_holder_commitment_txn(org.ldk.structs.Logger logger) { - byte[][] ret = bindings.ChannelMonitor_get_latest_holder_commitment_txn(this.ptr, logger == null ? 0 : logger.ptr); + byte[][] ret = bindings.ChannelMonitor_get_latest_holder_commitment_txn(this.ptr, logger.ptr); Reference.reachabilityFence(this); Reference.reachabilityFence(logger); if (this != null) { this.ptrs_to.add(logger); }; @@ -231,8 +318,8 @@ public class ChannelMonitor extends CommonBase { * * [`get_outputs_to_watch`]: #method.get_outputs_to_watch */ - public TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[] block_connected(byte[] header, TwoTuple_usizeTransactionZ[] txdata, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) { - long[] ret = bindings.ChannelMonitor_block_connected(this.ptr, InternalUtils.check_arr_len(header, 80), txdata != null ? Arrays.stream(txdata).mapToLong(txdata_conv_28 -> txdata_conv_28 != null ? txdata_conv_28.ptr : 0).toArray() : null, height, broadcaster == null ? 0 : broadcaster.ptr, fee_estimator == null ? 0 : fee_estimator.ptr, logger == null ? 0 : logger.ptr); + public TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] block_connected(byte[] header, TwoTuple_usizeTransactionZ[] txdata, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) { + long[] ret = bindings.ChannelMonitor_block_connected(this.ptr, InternalUtils.check_arr_len(header, 80), txdata != null ? Arrays.stream(txdata).mapToLong(txdata_conv_28 -> txdata_conv_28 != null ? txdata_conv_28.ptr : 0).toArray() : null, height, broadcaster.ptr, fee_estimator.ptr, logger.ptr); Reference.reachabilityFence(this); Reference.reachabilityFence(header); Reference.reachabilityFence(txdata); @@ -240,18 +327,18 @@ public class ChannelMonitor extends CommonBase { Reference.reachabilityFence(broadcaster); Reference.reachabilityFence(fee_estimator); Reference.reachabilityFence(logger); - int ret_conv_39_len = ret.length; - TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[] ret_conv_39_arr = new TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[ret_conv_39_len]; - for (int n = 0; n < ret_conv_39_len; n++) { - long ret_conv_39 = ret[n]; - TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ ret_conv_39_hu_conv = new TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ(null, ret_conv_39); - if (ret_conv_39_hu_conv != null) { ret_conv_39_hu_conv.ptrs_to.add(this); }; - ret_conv_39_arr[n] = ret_conv_39_hu_conv; + int ret_conv_49_len = ret.length; + TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] ret_conv_49_arr = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[ret_conv_49_len]; + for (int x = 0; x < ret_conv_49_len; x++) { + long ret_conv_49 = ret[x]; + TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ ret_conv_49_hu_conv = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ(null, ret_conv_49); + if (ret_conv_49_hu_conv != null) { ret_conv_49_hu_conv.ptrs_to.add(this); }; + ret_conv_49_arr[x] = ret_conv_49_hu_conv; } if (this != null) { this.ptrs_to.add(broadcaster); }; if (this != null) { this.ptrs_to.add(fee_estimator); }; if (this != null) { this.ptrs_to.add(logger); }; - return ret_conv_39_arr; + return ret_conv_49_arr; } /** @@ -259,7 +346,7 @@ public class ChannelMonitor extends CommonBase { * appropriately. */ public void block_disconnected(byte[] header, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) { - bindings.ChannelMonitor_block_disconnected(this.ptr, InternalUtils.check_arr_len(header, 80), height, broadcaster == null ? 0 : broadcaster.ptr, fee_estimator == null ? 0 : fee_estimator.ptr, logger == null ? 0 : logger.ptr); + bindings.ChannelMonitor_block_disconnected(this.ptr, InternalUtils.check_arr_len(header, 80), height, broadcaster.ptr, fee_estimator.ptr, logger.ptr); Reference.reachabilityFence(this); Reference.reachabilityFence(header); Reference.reachabilityFence(height); @@ -280,8 +367,8 @@ public class ChannelMonitor extends CommonBase { * * [`block_connected`]: Self::block_connected */ - public TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[] transactions_confirmed(byte[] header, TwoTuple_usizeTransactionZ[] txdata, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) { - long[] ret = bindings.ChannelMonitor_transactions_confirmed(this.ptr, InternalUtils.check_arr_len(header, 80), txdata != null ? Arrays.stream(txdata).mapToLong(txdata_conv_28 -> txdata_conv_28 != null ? txdata_conv_28.ptr : 0).toArray() : null, height, broadcaster == null ? 0 : broadcaster.ptr, fee_estimator == null ? 0 : fee_estimator.ptr, logger == null ? 0 : logger.ptr); + public TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] transactions_confirmed(byte[] header, TwoTuple_usizeTransactionZ[] txdata, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) { + long[] ret = bindings.ChannelMonitor_transactions_confirmed(this.ptr, InternalUtils.check_arr_len(header, 80), txdata != null ? Arrays.stream(txdata).mapToLong(txdata_conv_28 -> txdata_conv_28 != null ? txdata_conv_28.ptr : 0).toArray() : null, height, broadcaster.ptr, fee_estimator.ptr, logger.ptr); Reference.reachabilityFence(this); Reference.reachabilityFence(header); Reference.reachabilityFence(txdata); @@ -289,18 +376,18 @@ public class ChannelMonitor extends CommonBase { Reference.reachabilityFence(broadcaster); Reference.reachabilityFence(fee_estimator); Reference.reachabilityFence(logger); - int ret_conv_39_len = ret.length; - TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[] ret_conv_39_arr = new TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[ret_conv_39_len]; - for (int n = 0; n < ret_conv_39_len; n++) { - long ret_conv_39 = ret[n]; - TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ ret_conv_39_hu_conv = new TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ(null, ret_conv_39); - if (ret_conv_39_hu_conv != null) { ret_conv_39_hu_conv.ptrs_to.add(this); }; - ret_conv_39_arr[n] = ret_conv_39_hu_conv; + int ret_conv_49_len = ret.length; + TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] ret_conv_49_arr = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[ret_conv_49_len]; + for (int x = 0; x < ret_conv_49_len; x++) { + long ret_conv_49 = ret[x]; + TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ ret_conv_49_hu_conv = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ(null, ret_conv_49); + if (ret_conv_49_hu_conv != null) { ret_conv_49_hu_conv.ptrs_to.add(this); }; + ret_conv_49_arr[x] = ret_conv_49_hu_conv; } if (this != null) { this.ptrs_to.add(broadcaster); }; if (this != null) { this.ptrs_to.add(fee_estimator); }; if (this != null) { this.ptrs_to.add(logger); }; - return ret_conv_39_arr; + return ret_conv_49_arr; } /** @@ -312,7 +399,7 @@ public class ChannelMonitor extends CommonBase { * [`block_disconnected`]: Self::block_disconnected */ public void transaction_unconfirmed(byte[] txid, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) { - bindings.ChannelMonitor_transaction_unconfirmed(this.ptr, InternalUtils.check_arr_len(txid, 32), broadcaster == null ? 0 : broadcaster.ptr, fee_estimator == null ? 0 : fee_estimator.ptr, logger == null ? 0 : logger.ptr); + bindings.ChannelMonitor_transaction_unconfirmed(this.ptr, InternalUtils.check_arr_len(txid, 32), broadcaster.ptr, fee_estimator.ptr, logger.ptr); Reference.reachabilityFence(this); Reference.reachabilityFence(txid); Reference.reachabilityFence(broadcaster); @@ -332,43 +419,43 @@ public class ChannelMonitor extends CommonBase { * * [`block_connected`]: Self::block_connected */ - public TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[] best_block_updated(byte[] header, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) { - long[] ret = bindings.ChannelMonitor_best_block_updated(this.ptr, InternalUtils.check_arr_len(header, 80), height, broadcaster == null ? 0 : broadcaster.ptr, fee_estimator == null ? 0 : fee_estimator.ptr, logger == null ? 0 : logger.ptr); + public TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] best_block_updated(byte[] header, int height, org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) { + long[] ret = bindings.ChannelMonitor_best_block_updated(this.ptr, InternalUtils.check_arr_len(header, 80), height, broadcaster.ptr, fee_estimator.ptr, logger.ptr); Reference.reachabilityFence(this); Reference.reachabilityFence(header); Reference.reachabilityFence(height); Reference.reachabilityFence(broadcaster); Reference.reachabilityFence(fee_estimator); Reference.reachabilityFence(logger); - int ret_conv_39_len = ret.length; - TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[] ret_conv_39_arr = new TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ[ret_conv_39_len]; - for (int n = 0; n < ret_conv_39_len; n++) { - long ret_conv_39 = ret[n]; - TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ ret_conv_39_hu_conv = new TwoTuple_TxidCVec_C2Tuple_u32TxOutZZZ(null, ret_conv_39); - if (ret_conv_39_hu_conv != null) { ret_conv_39_hu_conv.ptrs_to.add(this); }; - ret_conv_39_arr[n] = ret_conv_39_hu_conv; + int ret_conv_49_len = ret.length; + TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[] ret_conv_49_arr = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ[ret_conv_49_len]; + for (int x = 0; x < ret_conv_49_len; x++) { + long ret_conv_49 = ret[x]; + TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ ret_conv_49_hu_conv = new TwoTuple_ThirtyTwoBytesCVec_C2Tuple_u32TxOutZZZ(null, ret_conv_49); + if (ret_conv_49_hu_conv != null) { ret_conv_49_hu_conv.ptrs_to.add(this); }; + ret_conv_49_arr[x] = ret_conv_49_hu_conv; } if (this != null) { this.ptrs_to.add(broadcaster); }; if (this != null) { this.ptrs_to.add(fee_estimator); }; if (this != null) { this.ptrs_to.add(logger); }; - return ret_conv_39_arr; + return ret_conv_49_arr; } /** * Returns the set of txids that should be monitored for re-organization out of the chain. */ - public TwoTuple_TxidBlockHashZ[] get_relevant_txids() { + public TwoTuple_ThirtyTwoBytesCOption_ThirtyTwoBytesZZ[] get_relevant_txids() { long[] ret = bindings.ChannelMonitor_get_relevant_txids(this.ptr); Reference.reachabilityFence(this); - int ret_conv_25_len = ret.length; - TwoTuple_TxidBlockHashZ[] ret_conv_25_arr = new TwoTuple_TxidBlockHashZ[ret_conv_25_len]; - for (int z = 0; z < ret_conv_25_len; z++) { - long ret_conv_25 = ret[z]; - TwoTuple_TxidBlockHashZ ret_conv_25_hu_conv = new TwoTuple_TxidBlockHashZ(null, ret_conv_25); - if (ret_conv_25_hu_conv != null) { ret_conv_25_hu_conv.ptrs_to.add(this); }; - ret_conv_25_arr[z] = ret_conv_25_hu_conv; + int ret_conv_49_len = ret.length; + TwoTuple_ThirtyTwoBytesCOption_ThirtyTwoBytesZZ[] ret_conv_49_arr = new TwoTuple_ThirtyTwoBytesCOption_ThirtyTwoBytesZZ[ret_conv_49_len]; + for (int x = 0; x < ret_conv_49_len; x++) { + long ret_conv_49 = ret[x]; + TwoTuple_ThirtyTwoBytesCOption_ThirtyTwoBytesZZ ret_conv_49_hu_conv = new TwoTuple_ThirtyTwoBytesCOption_ThirtyTwoBytesZZ(null, ret_conv_49); + if (ret_conv_49_hu_conv != null) { ret_conv_49_hu_conv.ptrs_to.add(this); }; + ret_conv_49_arr[x] = ret_conv_49_hu_conv; } - return ret_conv_25_arr; + return ret_conv_49_arr; } /** @@ -384,6 +471,60 @@ public class ChannelMonitor extends CommonBase { return ret_hu_conv; } + /** + * Triggers rebroadcasts/fee-bumps of pending claims from a force-closed channel. This is + * crucial in preventing certain classes of pinning attacks, detecting substantial mempool + * feerate changes between blocks, and ensuring reliability if broadcasting fails. We recommend + * invoking this every 30 seconds, or lower if running in an environment with spotty + * connections, like on mobile. + */ + public void rebroadcast_pending_claims(org.ldk.structs.BroadcasterInterface broadcaster, org.ldk.structs.FeeEstimator fee_estimator, org.ldk.structs.Logger logger) { + bindings.ChannelMonitor_rebroadcast_pending_claims(this.ptr, broadcaster.ptr, fee_estimator.ptr, logger.ptr); + Reference.reachabilityFence(this); + Reference.reachabilityFence(broadcaster); + Reference.reachabilityFence(fee_estimator); + Reference.reachabilityFence(logger); + if (this != null) { this.ptrs_to.add(broadcaster); }; + if (this != null) { this.ptrs_to.add(fee_estimator); }; + if (this != null) { this.ptrs_to.add(logger); }; + } + + /** + * Returns the descriptors for relevant outputs (i.e., those that we can spend) within the + * transaction if they exist and the transaction has at least [`ANTI_REORG_DELAY`] + * confirmations. For [`SpendableOutputDescriptor::DelayedPaymentOutput`] descriptors to be + * returned, the transaction must have at least `max(ANTI_REORG_DELAY, to_self_delay)` + * confirmations. + * + * Descriptors returned by this method are primarily exposed via [`Event::SpendableOutputs`] + * once they are no longer under reorg risk. This method serves as a way to retrieve these + * descriptors at a later time, either for historical purposes, or to replay any + * missed/unhandled descriptors. For the purpose of gathering historical records, if the + * channel close has fully resolved (i.e., [`ChannelMonitor::get_claimable_balances`] returns + * an empty set), you can retrieve all spendable outputs by providing all descendant spending + * transactions starting from the channel's funding transaction and going down three levels. + * + * `tx` is a transaction we'll scan the outputs of. Any transaction can be provided. If any + * outputs which can be spent by us are found, at least one descriptor is returned. + * + * `confirmation_height` must be the height of the block in which `tx` was included in. + */ + public SpendableOutputDescriptor[] get_spendable_outputs(byte[] tx, int confirmation_height) { + long[] ret = bindings.ChannelMonitor_get_spendable_outputs(this.ptr, tx, confirmation_height); + Reference.reachabilityFence(this); + Reference.reachabilityFence(tx); + Reference.reachabilityFence(confirmation_height); + int ret_conv_27_len = ret.length; + SpendableOutputDescriptor[] ret_conv_27_arr = new SpendableOutputDescriptor[ret_conv_27_len]; + for (int b = 0; b < ret_conv_27_len; b++) { + long ret_conv_27 = ret[b]; + org.ldk.structs.SpendableOutputDescriptor ret_conv_27_hu_conv = org.ldk.structs.SpendableOutputDescriptor.constr_from_ptr(ret_conv_27); + if (ret_conv_27_hu_conv != null) { ret_conv_27_hu_conv.ptrs_to.add(this); }; + ret_conv_27_arr[b] = ret_conv_27_hu_conv; + } + return ret_conv_27_arr; + } + /** * Gets the balances in this channel which are either claimable by us if we were to * force-close the channel now or which are claimable on-chain (possibly awaiting @@ -395,8 +536,7 @@ public class ChannelMonitor extends CommonBase { * confirmations on the claim transaction. * * Note that for `ChannelMonitors` which track a channel which went on-chain with versions of - * LDK prior to 0.0.111, balances may not be fully captured if our counterparty broadcasted - * a revoked state. + * LDK prior to 0.0.111, not all or excess balances may be included. * * See [`Balance`] for additional details on the types of claimable balances which * may be returned here and their meanings.