--- /dev/null
+// This file is Copyright its original authors, visible in version control
+// history and in the source files from which this was generated.
+//
+// This file is licensed under the license available in the LICENSE or LICENSE.md
+// file in the root of this repository or, if no such file exists, the same
+// license as that which applies to the original source files from which this
+// source was automatically generated.
+
+//! Structs and traits which allow other parts of rust-lightning to interact with the blockchain.
+
+use std::ffi::c_void;
+use bitcoin::hashes::Hash;
+use crate::c_types::*;
+
+pub mod chaininterface;
+pub mod chainmonitor;
+pub mod channelmonitor;
+pub mod transaction;
+pub mod keysinterface;
+/// An error when accessing the chain via [`Access`].
+#[must_use]
+#[derive(Clone)]
+#[repr(C)]
+pub enum AccessError {
+ /// The requested chain is unknown.
+ UnknownChain,
+ /// The requested transaction doesn't exist or hasn't confirmed.
+ UnknownTx,
+}
+use lightning::chain::AccessError as nativeAccessError;
+impl AccessError {
+ #[allow(unused)]
+ pub(crate) fn to_native(&self) -> nativeAccessError {
+ match self {
+ AccessError::UnknownChain => nativeAccessError::UnknownChain,
+ AccessError::UnknownTx => nativeAccessError::UnknownTx,
+ }
+ }
+ #[allow(unused)]
+ pub(crate) fn into_native(self) -> nativeAccessError {
+ match self {
+ AccessError::UnknownChain => nativeAccessError::UnknownChain,
+ AccessError::UnknownTx => nativeAccessError::UnknownTx,
+ }
+ }
+ #[allow(unused)]
+ pub(crate) fn from_native(native: &nativeAccessError) -> Self {
+ match native {
+ nativeAccessError::UnknownChain => AccessError::UnknownChain,
+ nativeAccessError::UnknownTx => AccessError::UnknownTx,
+ }
+ }
+ #[allow(unused)]
+ pub(crate) fn native_into(native: nativeAccessError) -> Self {
+ match native {
+ nativeAccessError::UnknownChain => AccessError::UnknownChain,
+ nativeAccessError::UnknownTx => AccessError::UnknownTx,
+ }
+ }
+}
+/// Creates a copy of the AccessError
+#[no_mangle]
+pub extern "C" fn AccessError_clone(orig: &AccessError) -> AccessError {
+ orig.clone()
+}
+/// The `Access` trait defines behavior for accessing chain data and state, such as blocks and
+/// UTXOs.
+#[repr(C)]
+pub struct Access {
+ /// An opaque pointer which is passed to your function implementations as an argument.
+ /// This has no meaning in the LDK, and can be NULL or any other value.
+ pub this_arg: *mut c_void,
+ /// Returns the transaction output of a funding transaction encoded by [`short_channel_id`].
+ /// Returns an error if `genesis_hash` is for a different chain or if such a transaction output
+ /// is unknown.
+ ///
+ /// [`short_channel_id`]: https://github.com/lightningnetwork/lightning-rfc/blob/master/07-routing-gossip.md#definition-of-short_channel_id
+ #[must_use]
+ pub get_utxo: extern "C" fn (this_arg: *const c_void, genesis_hash: *const [u8; 32], short_channel_id: u64) -> crate::c_types::derived::CResult_TxOutAccessErrorZ,
+ /// Frees any resources associated with this object given its this_arg pointer.
+ /// Does not need to free the outer struct containing function pointers and may be NULL is no resources need to be freed.
+ pub free: Option<extern "C" fn(this_arg: *mut c_void)>,
+}
+unsafe impl Send for Access {}
+unsafe impl Sync for Access {}
+
+use lightning::chain::Access as rustAccess;
+impl rustAccess for Access {
+ fn get_utxo(&self, genesis_hash: &bitcoin::hash_types::BlockHash, short_channel_id: u64) -> Result<bitcoin::blockdata::transaction::TxOut, lightning::chain::AccessError> {
+ let mut ret = (self.get_utxo)(self.this_arg, genesis_hash.as_inner(), short_channel_id);
+ let mut local_ret = match ret.result_ok { true => Ok( { (*unsafe { Box::from_raw(<*mut _>::take_ptr(&mut ret.contents.result)) }).into_rust() }), false => Err( { (*unsafe { Box::from_raw(<*mut _>::take_ptr(&mut ret.contents.err)) }).into_native() })};
+ local_ret
+ }
+}
+
+// We're essentially a pointer already, or at least a set of pointers, so allow us to be used
+// directly as a Deref trait in higher-level structs:
+impl std::ops::Deref for Access {
+ type Target = Self;
+ fn deref(&self) -> &Self {
+ self
+ }
+}
+/// Calls the free function if one is set
+#[no_mangle]
+pub extern "C" fn Access_free(this_ptr: Access) { }
+impl Drop for Access {
+ fn drop(&mut self) {
+ if let Some(f) = self.free {
+ f(self.this_arg);
+ }
+ }
+}
+/// The `Listen` trait is used to be notified of when blocks have been connected or disconnected
+/// from the chain.
+///
+/// Useful when needing to replay chain data upon startup or as new chain events occur.
+#[repr(C)]
+pub struct Listen {
+ /// An opaque pointer which is passed to your function implementations as an argument.
+ /// This has no meaning in the LDK, and can be NULL or any other value.
+ pub this_arg: *mut c_void,
+ /// Notifies the listener that a block was added at the given height.
+ pub block_connected: extern "C" fn (this_arg: *const c_void, block: crate::c_types::u8slice, height: u32),
+ /// Notifies the listener that a block was removed at the given height.
+ pub block_disconnected: extern "C" fn (this_arg: *const c_void, header: *const [u8; 80], height: u32),
+ /// Frees any resources associated with this object given its this_arg pointer.
+ /// Does not need to free the outer struct containing function pointers and may be NULL is no resources need to be freed.
+ pub free: Option<extern "C" fn(this_arg: *mut c_void)>,
+}
+
+use lightning::chain::Listen as rustListen;
+impl rustListen for Listen {
+ fn block_connected(&self, block: &bitcoin::blockdata::block::Block, height: u32) {
+ let mut local_block = ::bitcoin::consensus::encode::serialize(block);
+ (self.block_connected)(self.this_arg, crate::c_types::u8slice::from_slice(&local_block), height)
+ }
+ fn block_disconnected(&self, header: &bitcoin::blockdata::block::BlockHeader, height: u32) {
+ let mut local_header = { let mut s = [0u8; 80]; s[..].copy_from_slice(&::bitcoin::consensus::encode::serialize(header)); s };
+ (self.block_disconnected)(self.this_arg, &local_header, height)
+ }
+}
+
+// We're essentially a pointer already, or at least a set of pointers, so allow us to be used
+// directly as a Deref trait in higher-level structs:
+impl std::ops::Deref for Listen {
+ type Target = Self;
+ fn deref(&self) -> &Self {
+ self
+ }
+}
+/// Calls the free function if one is set
+#[no_mangle]
+pub extern "C" fn Listen_free(this_ptr: Listen) { }
+impl Drop for Listen {
+ fn drop(&mut self) {
+ if let Some(f) = self.free {
+ f(self.this_arg);
+ }
+ }
+}
+/// The `Watch` trait defines behavior for watching on-chain activity pertaining to channels as
+/// blocks are connected and disconnected.
+///
+/// Each channel is associated with a [`ChannelMonitor`]. Implementations of this trait are
+/// responsible for maintaining a set of monitors such that they can be updated accordingly as
+/// channel state changes and HTLCs are resolved. See method documentation for specific
+/// requirements.
+///
+/// Implementations **must** ensure that updates are successfully applied and persisted upon method
+/// completion. If an update fails with a [`PermanentFailure`], then it must immediately shut down
+/// without taking any further action such as persisting the current state.
+///
+/// If an implementation maintains multiple instances of a channel's monitor (e.g., by storing
+/// backup copies), then it must ensure that updates are applied across all instances. Otherwise, it
+/// could result in a revoked transaction being broadcast, allowing the counterparty to claim all
+/// funds in the channel. See [`ChannelMonitorUpdateErr`] for more details about how to handle
+/// multiple instances.
+///
+/// [`ChannelMonitor`]: channelmonitor::ChannelMonitor
+/// [`ChannelMonitorUpdateErr`]: channelmonitor::ChannelMonitorUpdateErr
+/// [`PermanentFailure`]: channelmonitor::ChannelMonitorUpdateErr::PermanentFailure
+#[repr(C)]
+pub struct Watch {
+ /// An opaque pointer which is passed to your function implementations as an argument.
+ /// This has no meaning in the LDK, and can be NULL or any other value.
+ pub this_arg: *mut c_void,
+ /// Watches a channel identified by `funding_txo` using `monitor`.
+ ///
+ /// Implementations are responsible for watching the chain for the funding transaction along
+ /// with any spends of outputs returned by [`get_outputs_to_watch`]. In practice, this means
+ /// calling [`block_connected`] and [`block_disconnected`] on the monitor.
+ ///
+ /// [`get_outputs_to_watch`]: channelmonitor::ChannelMonitor::get_outputs_to_watch
+ /// [`block_connected`]: channelmonitor::ChannelMonitor::block_connected
+ /// [`block_disconnected`]: channelmonitor::ChannelMonitor::block_disconnected
+ #[must_use]
+ pub watch_channel: extern "C" fn (this_arg: *const c_void, funding_txo: crate::lightning::chain::transaction::OutPoint, monitor: crate::lightning::chain::channelmonitor::ChannelMonitor) -> crate::c_types::derived::CResult_NoneChannelMonitorUpdateErrZ,
+ /// Updates a channel identified by `funding_txo` by applying `update` to its monitor.
+ ///
+ /// Implementations must call [`update_monitor`] with the given update. See
+ /// [`ChannelMonitorUpdateErr`] for invariants around returning an error.
+ ///
+ /// [`update_monitor`]: channelmonitor::ChannelMonitor::update_monitor
+ /// [`ChannelMonitorUpdateErr`]: channelmonitor::ChannelMonitorUpdateErr
+ #[must_use]
+ pub update_channel: extern "C" fn (this_arg: *const c_void, funding_txo: crate::lightning::chain::transaction::OutPoint, update: crate::lightning::chain::channelmonitor::ChannelMonitorUpdate) -> crate::c_types::derived::CResult_NoneChannelMonitorUpdateErrZ,
+ /// Returns any monitor events since the last call. Subsequent calls must only return new
+ /// events.
+ #[must_use]
+ pub release_pending_monitor_events: extern "C" fn (this_arg: *const c_void) -> crate::c_types::derived::CVec_MonitorEventZ,
+ /// Frees any resources associated with this object given its this_arg pointer.
+ /// Does not need to free the outer struct containing function pointers and may be NULL is no resources need to be freed.
+ pub free: Option<extern "C" fn(this_arg: *mut c_void)>,
+}
+unsafe impl Send for Watch {}
+unsafe impl Sync for Watch {}
+
+use lightning::chain::Watch as rustWatch;
+impl rustWatch<crate::lightning::chain::keysinterface::Sign> for Watch {
+ fn watch_channel(&self, funding_txo: lightning::chain::transaction::OutPoint, monitor: lightning::chain::channelmonitor::ChannelMonitor<crate::lightning::chain::keysinterface::Sign>) -> Result<(), lightning::chain::channelmonitor::ChannelMonitorUpdateErr> {
+ let mut ret = (self.watch_channel)(self.this_arg, crate::lightning::chain::transaction::OutPoint { inner: Box::into_raw(Box::new(funding_txo)), is_owned: true }, crate::lightning::chain::channelmonitor::ChannelMonitor { inner: Box::into_raw(Box::new(monitor)), is_owned: true });
+ let mut local_ret = match ret.result_ok { true => Ok( { () /*(*unsafe { Box::from_raw(<*mut _>::take_ptr(&mut ret.contents.result)) })*/ }), false => Err( { (*unsafe { Box::from_raw(<*mut _>::take_ptr(&mut ret.contents.err)) }).into_native() })};
+ local_ret
+ }
+ fn update_channel(&self, funding_txo: lightning::chain::transaction::OutPoint, update: lightning::chain::channelmonitor::ChannelMonitorUpdate) -> Result<(), lightning::chain::channelmonitor::ChannelMonitorUpdateErr> {
+ let mut ret = (self.update_channel)(self.this_arg, crate::lightning::chain::transaction::OutPoint { inner: Box::into_raw(Box::new(funding_txo)), is_owned: true }, crate::lightning::chain::channelmonitor::ChannelMonitorUpdate { inner: Box::into_raw(Box::new(update)), is_owned: true });
+ let mut local_ret = match ret.result_ok { true => Ok( { () /*(*unsafe { Box::from_raw(<*mut _>::take_ptr(&mut ret.contents.result)) })*/ }), false => Err( { (*unsafe { Box::from_raw(<*mut _>::take_ptr(&mut ret.contents.err)) }).into_native() })};
+ local_ret
+ }
+ fn release_pending_monitor_events(&self) -> Vec<lightning::chain::channelmonitor::MonitorEvent> {
+ let mut ret = (self.release_pending_monitor_events)(self.this_arg);
+ let mut local_ret = Vec::new(); for mut item in ret.into_rust().drain(..) { local_ret.push( { item.into_native() }); };
+ local_ret
+ }
+}
+
+// We're essentially a pointer already, or at least a set of pointers, so allow us to be used
+// directly as a Deref trait in higher-level structs:
+impl std::ops::Deref for Watch {
+ type Target = Self;
+ fn deref(&self) -> &Self {
+ self
+ }
+}
+/// Calls the free function if one is set
+#[no_mangle]
+pub extern "C" fn Watch_free(this_ptr: Watch) { }
+impl Drop for Watch {
+ fn drop(&mut self) {
+ if let Some(f) = self.free {
+ f(self.this_arg);
+ }
+ }
+}
+/// The `Filter` trait defines behavior for indicating chain activity of interest pertaining to
+/// channels.
+///
+/// This is useful in order to have a [`Watch`] implementation convey to a chain source which
+/// transactions to be notified of. Notification may take the form of pre-filtering blocks or, in
+/// the case of [BIP 157]/[BIP 158], only fetching a block if the compact filter matches. If
+/// receiving full blocks from a chain source, any further filtering is unnecessary.
+///
+/// After an output has been registered, subsequent block retrievals from the chain source must not
+/// exclude any transactions matching the new criteria nor any in-block descendants of such
+/// transactions.
+///
+/// Note that use as part of a [`Watch`] implementation involves reentrancy. Therefore, the `Filter`
+/// should not block on I/O. Implementations should instead queue the newly monitored data to be
+/// processed later. Then, in order to block until the data has been processed, any [`Watch`]
+/// invocation that has called the `Filter` must return [`TemporaryFailure`].
+///
+/// [`TemporaryFailure`]: channelmonitor::ChannelMonitorUpdateErr::TemporaryFailure
+/// [BIP 157]: https://github.com/bitcoin/bips/blob/master/bip-0157.mediawiki
+/// [BIP 158]: https://github.com/bitcoin/bips/blob/master/bip-0158.mediawiki
+#[repr(C)]
+pub struct Filter {
+ /// An opaque pointer which is passed to your function implementations as an argument.
+ /// This has no meaning in the LDK, and can be NULL or any other value.
+ pub this_arg: *mut c_void,
+ /// Registers interest in a transaction with `txid` and having an output with `script_pubkey` as
+ /// a spending condition.
+ pub register_tx: extern "C" fn (this_arg: *const c_void, txid: *const [u8; 32], script_pubkey: crate::c_types::u8slice),
+ /// Registers interest in spends of a transaction output.
+ ///
+ /// Optionally, when `output.block_hash` is set, should return any transaction spending the
+ /// output that is found in the corresponding block along with its index.
+ ///
+ /// This return value is useful for Electrum clients in order to supply in-block descendant
+ /// transactions which otherwise were not included. This is not necessary for other clients if
+ /// such descendant transactions were already included (e.g., when a BIP 157 client provides the
+ /// full block).
+ #[must_use]
+ pub register_output: extern "C" fn (this_arg: *const c_void, output: crate::lightning::chain::WatchedOutput) -> crate::c_types::derived::COption_C2Tuple_usizeTransactionZZ,
+ /// Frees any resources associated with this object given its this_arg pointer.
+ /// Does not need to free the outer struct containing function pointers and may be NULL is no resources need to be freed.
+ pub free: Option<extern "C" fn(this_arg: *mut c_void)>,
+}
+unsafe impl Send for Filter {}
+unsafe impl Sync for Filter {}
+
+use lightning::chain::Filter as rustFilter;
+impl rustFilter for Filter {
+ fn register_tx(&self, txid: &bitcoin::hash_types::Txid, script_pubkey: &bitcoin::blockdata::script::Script) {
+ (self.register_tx)(self.this_arg, txid.as_inner(), crate::c_types::u8slice::from_slice(&script_pubkey[..]))
+ }
+ fn register_output(&self, output: lightning::chain::WatchedOutput) -> Option<(usize, bitcoin::blockdata::transaction::Transaction)> {
+ let mut ret = (self.register_output)(self.this_arg, crate::lightning::chain::WatchedOutput { inner: Box::into_raw(Box::new(output)), is_owned: true });
+ let mut local_ret = if ret.is_some() { Some( { let (mut orig_ret_0_0, mut orig_ret_0_1) = ret.take().to_rust(); let mut local_ret_0 = (orig_ret_0_0, orig_ret_0_1.into_bitcoin()); local_ret_0 }) } else { None };
+ local_ret
+ }
+}
+
+// We're essentially a pointer already, or at least a set of pointers, so allow us to be used
+// directly as a Deref trait in higher-level structs:
+impl std::ops::Deref for Filter {
+ type Target = Self;
+ fn deref(&self) -> &Self {
+ self
+ }
+}
+/// Calls the free function if one is set
+#[no_mangle]
+pub extern "C" fn Filter_free(this_ptr: Filter) { }
+impl Drop for Filter {
+ fn drop(&mut self) {
+ if let Some(f) = self.free {
+ f(self.this_arg);
+ }
+ }
+}
+
+use lightning::chain::WatchedOutput as nativeWatchedOutputImport;
+type nativeWatchedOutput = nativeWatchedOutputImport;
+
+/// A transaction output watched by a [`ChannelMonitor`] for spends on-chain.
+///
+/// Used to convey to a [`Filter`] such an output with a given spending condition. Any transaction
+/// spending the output must be given to [`ChannelMonitor::block_connected`] either directly or via
+/// the return value of [`Filter::register_output`].
+///
+/// If `block_hash` is `Some`, this indicates the output was created in the corresponding block and
+/// may have been spent there. See [`Filter::register_output`] for details.
+///
+/// [`ChannelMonitor`]: channelmonitor::ChannelMonitor
+/// [`ChannelMonitor::block_connected`]: channelmonitor::ChannelMonitor::block_connected
+#[must_use]
+#[repr(C)]
+pub struct WatchedOutput {
+ /// A pointer to the opaque Rust object.
+
+ /// Nearly everywhere, inner must be non-null, however in places where
+ /// the Rust equivalent takes an Option, it may be set to null to indicate None.
+ pub inner: *mut nativeWatchedOutput,
+ /// Indicates that this is the only struct which contains the same pointer.
+
+ /// Rust functions which take ownership of an object provided via an argument require
+ /// this to be true and invalidate the object pointed to by inner.
+ pub is_owned: bool,
+}
+
+impl Drop for WatchedOutput {
+ fn drop(&mut self) {
+ if self.is_owned && !<*mut nativeWatchedOutput>::is_null(self.inner) {
+ let _ = unsafe { Box::from_raw(self.inner) };
+ }
+ }
+}
+/// Frees any resources used by the WatchedOutput, if is_owned is set and inner is non-NULL.
+#[no_mangle]
+pub extern "C" fn WatchedOutput_free(this_obj: WatchedOutput) { }
+#[allow(unused)]
+/// Used only if an object of this type is returned as a trait impl by a method
+extern "C" fn WatchedOutput_free_void(this_ptr: *mut c_void) {
+ unsafe { let _ = Box::from_raw(this_ptr as *mut nativeWatchedOutput); }
+}
+#[allow(unused)]
+/// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
+impl WatchedOutput {
+ pub(crate) fn take_inner(mut self) -> *mut nativeWatchedOutput {
+ assert!(self.is_owned);
+ let ret = self.inner;
+ self.inner = std::ptr::null_mut();
+ ret
+ }
+}
+/// First block where the transaction output may have been spent.
+#[no_mangle]
+pub extern "C" fn WatchedOutput_get_block_hash(this_ptr: &WatchedOutput) -> crate::c_types::ThirtyTwoBytes {
+ let mut inner_val = &mut unsafe { &mut *this_ptr.inner }.block_hash;
+ let mut local_inner_val = if inner_val.is_none() { crate::c_types::ThirtyTwoBytes::null() } else { { crate::c_types::ThirtyTwoBytes { data: (inner_val.unwrap()).into_inner() } } };
+ local_inner_val
+}
+/// First block where the transaction output may have been spent.
+#[no_mangle]
+pub extern "C" fn WatchedOutput_set_block_hash(this_ptr: &mut WatchedOutput, mut val: crate::c_types::ThirtyTwoBytes) {
+ let mut local_val = if val.data == [0; 32] { None } else { Some( { ::bitcoin::hash_types::BlockHash::from_slice(&val.data[..]).unwrap() }) };
+ unsafe { &mut *this_ptr.inner }.block_hash = local_val;
+}
+/// Outpoint identifying the transaction output.
+#[no_mangle]
+pub extern "C" fn WatchedOutput_get_outpoint(this_ptr: &WatchedOutput) -> crate::lightning::chain::transaction::OutPoint {
+ let mut inner_val = &mut unsafe { &mut *this_ptr.inner }.outpoint;
+ crate::lightning::chain::transaction::OutPoint { inner: unsafe { ( (&((*inner_val)) as *const _) as *mut _) }, is_owned: false }
+}
+/// Outpoint identifying the transaction output.
+#[no_mangle]
+pub extern "C" fn WatchedOutput_set_outpoint(this_ptr: &mut WatchedOutput, mut val: crate::lightning::chain::transaction::OutPoint) {
+ unsafe { &mut *this_ptr.inner }.outpoint = *unsafe { Box::from_raw(val.take_inner()) };
+}
+/// Spending condition of the transaction output.
+#[no_mangle]
+pub extern "C" fn WatchedOutput_get_script_pubkey(this_ptr: &WatchedOutput) -> crate::c_types::u8slice {
+ let mut inner_val = &mut unsafe { &mut *this_ptr.inner }.script_pubkey;
+ crate::c_types::u8slice::from_slice(&(*inner_val)[..])
+}
+/// Spending condition of the transaction output.
+#[no_mangle]
+pub extern "C" fn WatchedOutput_set_script_pubkey(this_ptr: &mut WatchedOutput, mut val: crate::c_types::derived::CVec_u8Z) {
+ unsafe { &mut *this_ptr.inner }.script_pubkey = ::bitcoin::blockdata::script::Script::from(val.into_rust());
+}
+/// Constructs a new WatchedOutput given each field
+#[must_use]
+#[no_mangle]
+pub extern "C" fn WatchedOutput_new(mut block_hash_arg: crate::c_types::ThirtyTwoBytes, mut outpoint_arg: crate::lightning::chain::transaction::OutPoint, mut script_pubkey_arg: crate::c_types::derived::CVec_u8Z) -> WatchedOutput {
+ let mut local_block_hash_arg = if block_hash_arg.data == [0; 32] { None } else { Some( { ::bitcoin::hash_types::BlockHash::from_slice(&block_hash_arg.data[..]).unwrap() }) };
+ WatchedOutput { inner: Box::into_raw(Box::new(nativeWatchedOutput {
+ block_hash: local_block_hash_arg,
+ outpoint: *unsafe { Box::from_raw(outpoint_arg.take_inner()) },
+ script_pubkey: ::bitcoin::blockdata::script::Script::from(script_pubkey_arg.into_rust()),
+ })), is_owned: true }
+}
projects / ldk-c-bindings / blobdiff