X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;ds=sidebyside;f=src%2Fmain%2Fjava%2Forg%2Fldk%2Fstructs%2FUtilMethods.java;h=863cce7f79d882e70623665cbe3ed1db378aeec6;hb=a7653cf8717b1f9df4d3f4c4bd0b1f50f3bbc230;hp=2d80e29bf190198f307edec583235b615d378ee7;hpb=17113550a5fefab21f39f27fbfe02646b8db53ae;p=ldk-java diff --git a/src/main/java/org/ldk/structs/UtilMethods.java b/src/main/java/org/ldk/structs/UtilMethods.java index 2d80e29b..863cce7f 100644 --- a/src/main/java/org/ldk/structs/UtilMethods.java +++ b/src/main/java/org/ldk/structs/UtilMethods.java @@ -1,13 +1,47 @@ package org.ldk.structs; import org.ldk.impl.bindings; import java.util.Arrays; +import javax.annotation.Nullable; +import org.ldk.enums.*; public class UtilMethods { + /** + * Creates a digital signature of a message given a SecretKey, like the node's secret. + * A receiver knowing the PublicKey (e.g. the node's id) and the message can be sure that the signature was generated by the caller. + * Signatures are EC recoverable, meaning that given the message and the signature the PublicKey of the signer can be extracted. + */ + public static Result_StringErrorZ sign(byte[] msg, byte[] sk) { + long ret = bindings.sign(msg, sk); + if (ret < 1024) { return null; } + Result_StringErrorZ ret_hu_conv = Result_StringErrorZ.constr_from_ptr(ret); + return ret_hu_conv; + } + + /** + * Recovers the PublicKey of the signer of the message given the message and the signature. + */ + public static Result_PublicKeyErrorZ recover_pk(byte[] msg, java.lang.String sig) { + long ret = bindings.recover_pk(msg, sig); + if (ret < 1024) { return null; } + Result_PublicKeyErrorZ ret_hu_conv = Result_PublicKeyErrorZ.constr_from_ptr(ret); + return ret_hu_conv; + } + + /** + * Verifies a message was signed by a PrivateKey that derives to a given PublicKey, given a message, a signature, + * and the PublicKey. + */ + public static boolean verify(byte[] msg, java.lang.String sig, byte[] pk) { + boolean ret = bindings.verify(msg, sig, pk); + return ret; + } + /** * Read a C2Tuple_BlockHashChannelMonitorZ from a byte array, created by C2Tuple_BlockHashChannelMonitorZ_write */ - public static Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ constructor_BlockHashChannelMonitorZ_read(byte[] ser, KeysInterface arg) { + public static Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ BlockHashChannelMonitorZ_read(byte[] ser, KeysInterface arg) { long ret = bindings.C2Tuple_BlockHashChannelMonitorZ_read(ser, arg == null ? 0 : arg.ptr); + if (ret < 1024) { return null; } Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ ret_hu_conv = Result_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ.constr_from_ptr(ret); ret_hu_conv.ptrs_to.add(arg); return ret_hu_conv; @@ -16,8 +50,9 @@ public class UtilMethods { /** * Read a C2Tuple_BlockHashChannelManagerZ from a byte array, created by C2Tuple_BlockHashChannelManagerZ_write */ - public static Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ constructor_BlockHashChannelManagerZ_read(byte[] ser, KeysInterface arg_keys_manager, FeeEstimator arg_fee_estimator, Watch arg_chain_monitor, BroadcasterInterface arg_tx_broadcaster, Logger arg_logger, UserConfig arg_default_config, ChannelMonitor[] arg_channel_monitors) { - long ret = bindings.C2Tuple_BlockHashChannelManagerZ_read(ser, bindings.ChannelManagerReadArgs_new(arg_keys_manager == null ? 0 : arg_keys_manager.ptr, arg_fee_estimator == null ? 0 : arg_fee_estimator.ptr, arg_chain_monitor == null ? 0 : arg_chain_monitor.ptr, arg_tx_broadcaster == null ? 0 : arg_tx_broadcaster.ptr, arg_logger == null ? 0 : arg_logger.ptr, arg_default_config == null ? 0 : arg_default_config.ptr & ~1, Arrays.stream(arg_channel_monitors).mapToLong(arg_channel_monitors_conv_16 -> arg_channel_monitors_conv_16 == null ? 0 : arg_channel_monitors_conv_16.ptr & ~1).toArray())); + public static Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ BlockHashChannelManagerZ_read(byte[] ser, KeysInterface arg_keys_manager, FeeEstimator arg_fee_estimator, Watch arg_chain_monitor, BroadcasterInterface arg_tx_broadcaster, Logger arg_logger, UserConfig arg_default_config, ChannelMonitor[] arg_channel_monitors) { + long ret = bindings.C2Tuple_BlockHashChannelManagerZ_read(ser, bindings.ChannelManagerReadArgs_new(arg_keys_manager == null ? 0 : arg_keys_manager.ptr, arg_fee_estimator == null ? 0 : arg_fee_estimator.ptr, arg_chain_monitor == null ? 0 : arg_chain_monitor.ptr, arg_tx_broadcaster == null ? 0 : arg_tx_broadcaster.ptr, arg_logger == null ? 0 : arg_logger.ptr, arg_default_config == null ? 0 : arg_default_config.ptr & ~1, arg_channel_monitors != null ? Arrays.stream(arg_channel_monitors).mapToLong(arg_channel_monitors_conv_16 -> arg_channel_monitors_conv_16 == null ? 0 : arg_channel_monitors_conv_16.ptr & ~1).toArray() : null)); + if (ret < 1024) { return null; } Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ ret_hu_conv = Result_C2Tuple_BlockHashChannelManagerZDecodeErrorZ.constr_from_ptr(ret); ret_hu_conv.ptrs_to.add(arg_keys_manager); ret_hu_conv.ptrs_to.add(arg_fee_estimator); @@ -25,7 +60,231 @@ public class UtilMethods { ret_hu_conv.ptrs_to.add(arg_tx_broadcaster); ret_hu_conv.ptrs_to.add(arg_logger); ret_hu_conv.ptrs_to.add(arg_default_config); - /* TODO 2 ChannelMonitor */; + for (ChannelMonitor arg_channel_monitors_conv_16: arg_channel_monitors) { ret_hu_conv.ptrs_to.add(arg_channel_monitors_conv_16); }; + return ret_hu_conv; + } + + /** + * Build the commitment secret from the seed and the commitment number + */ + public static byte[] build_commitment_secret(byte[] commitment_seed, long idx) { + byte[] ret = bindings.build_commitment_secret(commitment_seed, idx); + return ret; + } + + /** + * Build a closing transaction + */ + public static byte[] build_closing_transaction(long to_holder_value_sat, long to_counterparty_value_sat, byte[] to_holder_script, byte[] to_counterparty_script, OutPoint funding_outpoint) { + byte[] ret = bindings.build_closing_transaction(to_holder_value_sat, to_counterparty_value_sat, to_holder_script, to_counterparty_script, funding_outpoint == null ? 0 : funding_outpoint.ptr & ~1); + // this.ptrs_to.add(funding_outpoint); + return ret; + } + + /** + * Derives a per-commitment-transaction private key (eg an htlc key or delayed_payment key) + * from the base secret and the per_commitment_point. + * + * Note that this is infallible iff we trust that at least one of the two input keys are randomly + * generated (ie our own). + */ + public static Result_SecretKeyErrorZ derive_private_key(byte[] per_commitment_point, byte[] base_secret) { + long ret = bindings.derive_private_key(per_commitment_point, base_secret); + if (ret < 1024) { return null; } + Result_SecretKeyErrorZ ret_hu_conv = Result_SecretKeyErrorZ.constr_from_ptr(ret); + return ret_hu_conv; + } + + /** + * Derives a per-commitment-transaction public key (eg an htlc key or a delayed_payment key) + * from the base point and the per_commitment_key. This is the public equivalent of + * derive_private_key - using only public keys to derive a public key instead of private keys. + * + * Note that this is infallible iff we trust that at least one of the two input keys are randomly + * generated (ie our own). + */ + public static Result_PublicKeyErrorZ derive_public_key(byte[] per_commitment_point, byte[] base_point) { + long ret = bindings.derive_public_key(per_commitment_point, base_point); + if (ret < 1024) { return null; } + Result_PublicKeyErrorZ ret_hu_conv = Result_PublicKeyErrorZ.constr_from_ptr(ret); + return ret_hu_conv; + } + + /** + * Derives a per-commitment-transaction revocation key from its constituent parts. + * + * Only the cheating participant owns a valid witness to propagate a revoked + * commitment transaction, thus per_commitment_secret always come from cheater + * and revocation_base_secret always come from punisher, which is the broadcaster + * of the transaction spending with this key knowledge. + * + * Note that this is infallible iff we trust that at least one of the two input keys are randomly + * generated (ie our own). + */ + public static Result_SecretKeyErrorZ derive_private_revocation_key(byte[] per_commitment_secret, byte[] countersignatory_revocation_base_secret) { + long ret = bindings.derive_private_revocation_key(per_commitment_secret, countersignatory_revocation_base_secret); + if (ret < 1024) { return null; } + Result_SecretKeyErrorZ ret_hu_conv = Result_SecretKeyErrorZ.constr_from_ptr(ret); + return ret_hu_conv; + } + + /** + * Derives a per-commitment-transaction revocation public key from its constituent parts. This is + * the public equivalend of derive_private_revocation_key - using only public keys to derive a + * public key instead of private keys. + * + * Only the cheating participant owns a valid witness to propagate a revoked + * commitment transaction, thus per_commitment_point always come from cheater + * and revocation_base_point always come from punisher, which is the broadcaster + * of the transaction spending with this key knowledge. + * + * Note that this is infallible iff we trust that at least one of the two input keys are randomly + * generated (ie our own). + */ + public static Result_PublicKeyErrorZ derive_public_revocation_key(byte[] per_commitment_point, byte[] countersignatory_revocation_base_point) { + long ret = bindings.derive_public_revocation_key(per_commitment_point, countersignatory_revocation_base_point); + if (ret < 1024) { return null; } + Result_PublicKeyErrorZ ret_hu_conv = Result_PublicKeyErrorZ.constr_from_ptr(ret); + return ret_hu_conv; + } + + /** + * A script either spendable by the revocation + * key or the broadcaster_delayed_payment_key and satisfying the relative-locktime OP_CSV constrain. + * Encumbering a `to_holder` output on a commitment transaction or 2nd-stage HTLC transactions. + */ + public static byte[] get_revokeable_redeemscript(byte[] revocation_key, short contest_delay, byte[] broadcaster_delayed_payment_key) { + byte[] ret = bindings.get_revokeable_redeemscript(revocation_key, contest_delay, broadcaster_delayed_payment_key); + return ret; + } + + /** + * Gets the witness redeemscript for an HTLC output in a commitment transaction. Note that htlc + * does not need to have its previous_output_index filled. + */ + public static byte[] get_htlc_redeemscript(HTLCOutputInCommitment htlc, TxCreationKeys keys) { + byte[] ret = bindings.get_htlc_redeemscript(htlc == null ? 0 : htlc.ptr & ~1, keys == null ? 0 : keys.ptr & ~1); + // this.ptrs_to.add(htlc); + // this.ptrs_to.add(keys); + return ret; + } + + /** + * Gets the redeemscript for a funding output from the two funding public keys. + * Note that the order of funding public keys does not matter. + */ + public static byte[] make_funding_redeemscript(byte[] broadcaster, byte[] countersignatory) { + byte[] ret = bindings.make_funding_redeemscript(broadcaster, countersignatory); + return ret; + } + + /** + * Builds an unsigned HTLC-Success or HTLC-Timeout transaction from the given channel and HTLC + * parameters. This is used by [`TrustedCommitmentTransaction::get_htlc_sigs`] to fetch the + * transaction which needs signing, and can be used to construct an HTLC transaction which is + * broadcastable given a counterparty HTLC signature. + * + * Panics if htlc.transaction_output_index.is_none() (as such HTLCs do not appear in the + * commitment transaction). + */ + public static byte[] build_htlc_transaction(byte[] commitment_txid, int feerate_per_kw, short contest_delay, HTLCOutputInCommitment htlc, byte[] broadcaster_delayed_payment_key, byte[] revocation_key) { + byte[] ret = bindings.build_htlc_transaction(commitment_txid, feerate_per_kw, contest_delay, htlc == null ? 0 : htlc.ptr & ~1, broadcaster_delayed_payment_key, revocation_key); + // this.ptrs_to.add(htlc); + return ret; + } + + /** + * Commitment transaction numbers which appear in the transactions themselves are XOR'd with a + * shared secret first. This prevents on-chain observers from discovering how many commitment + * transactions occurred in a channel before it was closed. + * + * This function gets the shared secret from relevant channel public keys and can be used to + * \"decrypt\" the commitment transaction number given a commitment transaction on-chain. + */ + public static long get_commitment_transaction_number_obscure_factor(byte[] broadcaster_payment_basepoint, byte[] countersignatory_payment_basepoint, boolean outbound_from_broadcaster) { + long ret = bindings.get_commitment_transaction_number_obscure_factor(broadcaster_payment_basepoint, countersignatory_payment_basepoint, outbound_from_broadcaster); + return ret; + } + + /** + * Gets a keysend route from us (payer) to the given target node (payee). This is needed because + * keysend payments do not have an invoice from which to pull the payee's supported features, which + * makes it tricky to otherwise supply the `payee_features` parameter of `get_route`. + * + * Note that first_hops (or a relevant inner pointer) may be NULL or all-0s to represent None + */ + public static Result_RouteLightningErrorZ get_keysend_route(byte[] our_node_id, NetworkGraph network, byte[] payee, @Nullable ChannelDetails[] first_hops, RouteHint[] last_hops, long final_value_msat, int final_cltv, Logger logger) { + long ret = bindings.get_keysend_route(our_node_id, network == null ? 0 : network.ptr & ~1, payee, first_hops != null ? Arrays.stream(first_hops).mapToLong(first_hops_conv_16 -> first_hops_conv_16 == null ? 0 : first_hops_conv_16.ptr & ~1).toArray() : null, last_hops != null ? Arrays.stream(last_hops).mapToLong(last_hops_conv_11 -> last_hops_conv_11 == null ? 0 : last_hops_conv_11.ptr & ~1).toArray() : null, final_value_msat, final_cltv, logger == null ? 0 : logger.ptr); + if (ret < 1024) { return null; } + Result_RouteLightningErrorZ ret_hu_conv = Result_RouteLightningErrorZ.constr_from_ptr(ret); + ret_hu_conv.ptrs_to.add(network); + for (ChannelDetails first_hops_conv_16: first_hops) { ret_hu_conv.ptrs_to.add(first_hops_conv_16); }; + for (RouteHint last_hops_conv_11: last_hops) { ret_hu_conv.ptrs_to.add(last_hops_conv_11); }; + ret_hu_conv.ptrs_to.add(logger); + return ret_hu_conv; + } + + /** + * Gets a route from us (payer) to the given target node (payee). + * + * If the payee provided features in their invoice, they should be provided via payee_features. + * Without this, MPP will only be used if the payee's features are available in the network graph. + * + * Private routing paths between a public node and the target may be included in `last_hops`. + * Currently, only the last hop in each path is considered. + * + * If some channels aren't announced, it may be useful to fill in a first_hops with the + * results from a local ChannelManager::list_usable_channels() call. If it is filled in, our + * view of our local channels (from net_graph_msg_handler) will be ignored, and only those + * in first_hops will be used. + * + * Panics if first_hops contains channels without short_channel_ids + * (ChannelManager::list_usable_channels will never include such channels). + * + * The fees on channels from us to next-hops are ignored (as they are assumed to all be + * equal), however the enabled/disabled bit on such channels as well as the + * htlc_minimum_msat/htlc_maximum_msat *are* checked as they may change based on the receiving node. + * + * Note that payee_features (or a relevant inner pointer) may be NULL or all-0s to represent None + * Note that first_hops (or a relevant inner pointer) may be NULL or all-0s to represent None + */ + public static Result_RouteLightningErrorZ get_route(byte[] our_node_id, NetworkGraph network, byte[] payee, @Nullable InvoiceFeatures payee_features, @Nullable ChannelDetails[] first_hops, RouteHint[] last_hops, long final_value_msat, int final_cltv, Logger logger) { + long ret = bindings.get_route(our_node_id, network == null ? 0 : network.ptr & ~1, payee, payee_features == null ? 0 : payee_features.ptr & ~1, first_hops != null ? Arrays.stream(first_hops).mapToLong(first_hops_conv_16 -> first_hops_conv_16 == null ? 0 : first_hops_conv_16.ptr & ~1).toArray() : null, last_hops != null ? Arrays.stream(last_hops).mapToLong(last_hops_conv_11 -> last_hops_conv_11 == null ? 0 : last_hops_conv_11.ptr & ~1).toArray() : null, final_value_msat, final_cltv, logger == null ? 0 : logger.ptr); + if (ret < 1024) { return null; } + Result_RouteLightningErrorZ ret_hu_conv = Result_RouteLightningErrorZ.constr_from_ptr(ret); + ret_hu_conv.ptrs_to.add(network); + ret_hu_conv.ptrs_to.add(payee_features); + for (ChannelDetails first_hops_conv_16: first_hops) { ret_hu_conv.ptrs_to.add(first_hops_conv_16); }; + for (RouteHint last_hops_conv_11: last_hops) { ret_hu_conv.ptrs_to.add(last_hops_conv_11); }; + ret_hu_conv.ptrs_to.add(logger); + return ret_hu_conv; + } + + /** + * Writes the provided `ChannelManager` to the path provided at `FilesystemPersister` + * initialization, within a file called \"manager\". + */ + public static Result_NoneErrorZ FilesystemPersister_persist_manager(java.lang.String data_dir, ChannelManager manager) { + long ret = bindings.FilesystemPersister_persist_manager(data_dir, manager == null ? 0 : manager.ptr & ~1); + if (ret < 1024) { return null; } + Result_NoneErrorZ ret_hu_conv = Result_NoneErrorZ.constr_from_ptr(ret); + ret_hu_conv.ptrs_to.add(manager); + return ret_hu_conv; + } + + /** + * Utility to construct an invoice. Generally, unless you want to do something like a custom + * cltv_expiry, this is what you should be using to create an invoice. The reason being, this + * method stores the invoice's payment secret and preimage in `ChannelManager`, so (a) the user + * doesn't have to store preimage/payment secret information and (b) `ChannelManager` can verify + * that the payment secret is valid when the invoice is paid. + */ + public static Result_InvoiceSignOrCreationErrorZ create_invoice_from_channelmanager(ChannelManager channelmanager, KeysInterface keys_manager, org.ldk.enums.Currency network, Option_u64Z amt_msat, java.lang.String description) { + long ret = bindings.create_invoice_from_channelmanager(channelmanager == null ? 0 : channelmanager.ptr & ~1, keys_manager == null ? 0 : keys_manager.ptr, network, amt_msat.ptr, description); + if (ret < 1024) { return null; } + Result_InvoiceSignOrCreationErrorZ ret_hu_conv = Result_InvoiceSignOrCreationErrorZ.constr_from_ptr(ret); + ret_hu_conv.ptrs_to.add(channelmanager); + ret_hu_conv.ptrs_to.add(keys_manager); return ret_hu_conv; }