+++ /dev/null
-//! Logic to connect off-chain channel management with on-chain transaction monitoring.
-//!
-//! [`ChainMonitor`] is an implementation of [`chain::Watch`] used both to process blocks and to
-//! update [`ChannelMonitor`]s accordingly. If any on-chain events need further processing, it will
-//! make those available as [`MonitorEvent`]s to be consumed.
-//!
-//! `ChainMonitor` is parameterized by an optional chain source, which must implement the
-//! [`chain::Filter`] trait. This provides a mechanism to signal new relevant outputs back to light
-//! clients, such that transactions spending those outputs are included in block data.
-//!
-//! `ChainMonitor` may be used directly to monitor channels locally or as a part of a distributed
-//! setup to monitor channels remotely. In the latter case, a custom `chain::Watch` implementation
-//! would be responsible for routing each update to a remote server and for retrieving monitor
-//! events. The remote server would make use of `ChainMonitor` for block processing and for
-//! servicing `ChannelMonitor` updates from the client.
-//!
-//! [`ChainMonitor`]: struct.ChainMonitor.html
-//! [`chain::Filter`]: ../trait.Filter.html
-//! [`chain::Watch`]: ../trait.Watch.html
-//! [`ChannelMonitor`]: ../channelmonitor/struct.ChannelMonitor.html
-//! [`MonitorEvent`]: ../channelmonitor/enum.MonitorEvent.html
-
-use std::ffi::c_void;
-use bitcoin::hashes::Hash;
-use crate::c_types::*;
-
-
-use lightning::chain::chainmonitor::ChainMonitor as nativeChainMonitorImport;
-type nativeChainMonitor = nativeChainMonitorImport<crate::chain::keysinterface::Sign, crate::chain::Filter, crate::chain::chaininterface::BroadcasterInterface, crate::chain::chaininterface::FeeEstimator, crate::util::logger::Logger, crate::chain::channelmonitor::Persist>;
-
-/// An implementation of [`chain::Watch`] for monitoring channels.
-///
-/// Connected and disconnected blocks must be provided to `ChainMonitor` as documented by
-/// [`chain::Watch`]. May be used in conjunction with [`ChannelManager`] to monitor channels locally
-/// or used independently to monitor channels remotely. See the [module-level documentation] for
-/// details.
-///
-/// [`chain::Watch`]: ../trait.Watch.html
-/// [`ChannelManager`]: ../../ln/channelmanager/struct.ChannelManager.html
-/// [module-level documentation]: index.html
-#[must_use]
-#[repr(C)]
-pub struct ChainMonitor {
- /// 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 nativeChainMonitor,
- pub is_owned: bool,
-}
-
-impl Drop for ChainMonitor {
- fn drop(&mut self) {
- if self.is_owned && !<*mut nativeChainMonitor>::is_null(self.inner) {
- let _ = unsafe { Box::from_raw(self.inner) };
- }
- }
-}
-#[no_mangle]
-pub extern "C" fn ChainMonitor_free(this_ptr: ChainMonitor) { }
-#[allow(unused)]
-/// Used only if an object of this type is returned as a trait impl by a method
-extern "C" fn ChainMonitor_free_void(this_ptr: *mut c_void) {
- unsafe { let _ = Box::from_raw(this_ptr as *mut nativeChainMonitor); }
-}
-#[allow(unused)]
-/// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
-impl ChainMonitor {
- pub(crate) fn take_inner(mut self) -> *mut nativeChainMonitor {
- assert!(self.is_owned);
- let ret = self.inner;
- self.inner = std::ptr::null_mut();
- ret
- }
-}
-/// Dispatches to per-channel monitors, which are responsible for updating their on-chain view
-/// of a channel and reacting accordingly based on transactions in the connected block. See
-/// [`ChannelMonitor::block_connected`] for details. Any HTLCs that were resolved on chain will
-/// be returned by [`chain::Watch::release_pending_monitor_events`].
-///
-/// Calls back to [`chain::Filter`] if any monitor indicated new outputs to watch. Subsequent
-/// calls must not exclude any transactions matching the new outputs nor any in-block
-/// descendants of such transactions. It is not necessary to re-fetch the block to obtain
-/// updated `txdata`.
-///
-/// [`ChannelMonitor::block_connected`]: ../channelmonitor/struct.ChannelMonitor.html#method.block_connected
-/// [`chain::Watch::release_pending_monitor_events`]: ../trait.Watch.html#tymethod.release_pending_monitor_events
-/// [`chain::Filter`]: ../trait.Filter.html
-#[no_mangle]
-pub extern "C" fn ChainMonitor_block_connected(this_arg: &ChainMonitor, header: *const [u8; 80], mut txdata: crate::c_types::derived::CVec_C2Tuple_usizeTransactionZZ, mut height: u32) {
- let mut local_txdata = Vec::new(); for mut item in txdata.into_rust().drain(..) { local_txdata.push( { let (mut orig_txdata_0_0, mut orig_txdata_0_1) = item.to_rust(); let mut local_txdata_0 = (orig_txdata_0_0, orig_txdata_0_1.into_bitcoin()); local_txdata_0 }); };
- unsafe { &*this_arg.inner }.block_connected(&::bitcoin::consensus::encode::deserialize(unsafe { &*header }).unwrap(), &local_txdata.iter().map(|(a, b)| (*a, b)).collect::<Vec<_>>()[..], height)
-}
-
-/// Dispatches to per-channel monitors, which are responsible for updating their on-chain view
-/// of a channel based on the disconnected block. See [`ChannelMonitor::block_disconnected`] for
-/// details.
-///
-/// [`ChannelMonitor::block_disconnected`]: ../channelmonitor/struct.ChannelMonitor.html#method.block_disconnected
-#[no_mangle]
-pub extern "C" fn ChainMonitor_block_disconnected(this_arg: &ChainMonitor, header: *const [u8; 80], mut disconnected_height: u32) {
- unsafe { &*this_arg.inner }.block_disconnected(&::bitcoin::consensus::encode::deserialize(unsafe { &*header }).unwrap(), disconnected_height)
-}
-
-/// Creates a new `ChainMonitor` used to watch on-chain activity pertaining to channels.
-///
-/// When an optional chain source implementing [`chain::Filter`] is provided, the chain monitor
-/// will call back to it indicating transactions and outputs of interest. This allows clients to
-/// pre-filter blocks or only fetch blocks matching a compact filter. Otherwise, clients may
-/// always need to fetch full blocks absent another means for determining which blocks contain
-/// transactions relevant to the watched channels.
-///
-/// [`chain::Filter`]: ../trait.Filter.html
-#[must_use]
-#[no_mangle]
-pub extern "C" fn ChainMonitor_new(chain_source: *mut crate::chain::Filter, mut broadcaster: crate::chain::chaininterface::BroadcasterInterface, mut logger: crate::util::logger::Logger, mut feeest: crate::chain::chaininterface::FeeEstimator, mut persister: crate::chain::channelmonitor::Persist) -> ChainMonitor {
- let mut local_chain_source = if chain_source == std::ptr::null_mut() { None } else { Some( { unsafe { *Box::from_raw(chain_source) } }) };
- let mut ret = lightning::chain::chainmonitor::ChainMonitor::new(local_chain_source, broadcaster, logger, feeest, persister);
- ChainMonitor { inner: Box::into_raw(Box::new(ret)), is_owned: true }
-}
-
-impl From<nativeChainMonitor> for crate::chain::Watch {
- fn from(obj: nativeChainMonitor) -> Self {
- let mut rust_obj = ChainMonitor { inner: Box::into_raw(Box::new(obj)), is_owned: true };
- let mut ret = ChainMonitor_as_Watch(&rust_obj);
- // We want to free rust_obj when ret gets drop()'d, not rust_obj, so wipe rust_obj's pointer and set ret's free() fn
- rust_obj.inner = std::ptr::null_mut();
- ret.free = Some(ChainMonitor_free_void);
- ret
- }
-}
-#[no_mangle]
-pub extern "C" fn ChainMonitor_as_Watch(this_arg: &ChainMonitor) -> crate::chain::Watch {
- crate::chain::Watch {
- this_arg: unsafe { (*this_arg).inner as *mut c_void },
- free: None,
- watch_channel: ChainMonitor_Watch_watch_channel,
- update_channel: ChainMonitor_Watch_update_channel,
- release_pending_monitor_events: ChainMonitor_Watch_release_pending_monitor_events,
- }
-}
-
-#[must_use]
-extern "C" fn ChainMonitor_Watch_watch_channel(this_arg: *const c_void, mut funding_outpoint: crate::chain::transaction::OutPoint, mut monitor: crate::chain::channelmonitor::ChannelMonitor) -> crate::c_types::derived::CResult_NoneChannelMonitorUpdateErrZ {
- let mut ret = <nativeChainMonitor as lightning::chain::Watch<_>>::watch_channel(unsafe { &mut *(this_arg as *mut nativeChainMonitor) }, *unsafe { Box::from_raw(funding_outpoint.take_inner()) }, *unsafe { Box::from_raw(monitor.take_inner()) });
- let mut local_ret = match ret { Ok(mut o) => crate::c_types::CResultTempl::ok( { 0u8 /*o*/ }).into(), Err(mut e) => crate::c_types::CResultTempl::err( { crate::chain::channelmonitor::ChannelMonitorUpdateErr::native_into(e) }).into() };
- local_ret
-}
-#[must_use]
-extern "C" fn ChainMonitor_Watch_update_channel(this_arg: *const c_void, mut funding_txo: crate::chain::transaction::OutPoint, mut update: crate::chain::channelmonitor::ChannelMonitorUpdate) -> crate::c_types::derived::CResult_NoneChannelMonitorUpdateErrZ {
- let mut ret = <nativeChainMonitor as lightning::chain::Watch<_>>::update_channel(unsafe { &mut *(this_arg as *mut nativeChainMonitor) }, *unsafe { Box::from_raw(funding_txo.take_inner()) }, *unsafe { Box::from_raw(update.take_inner()) });
- let mut local_ret = match ret { Ok(mut o) => crate::c_types::CResultTempl::ok( { 0u8 /*o*/ }).into(), Err(mut e) => crate::c_types::CResultTempl::err( { crate::chain::channelmonitor::ChannelMonitorUpdateErr::native_into(e) }).into() };
- local_ret
-}
-#[must_use]
-extern "C" fn ChainMonitor_Watch_release_pending_monitor_events(this_arg: *const c_void) -> crate::c_types::derived::CVec_MonitorEventZ {
- let mut ret = <nativeChainMonitor as lightning::chain::Watch<_>>::release_pending_monitor_events(unsafe { &mut *(this_arg as *mut nativeChainMonitor) }, );
- let mut local_ret = Vec::new(); for mut item in ret.drain(..) { local_ret.push( { crate::chain::channelmonitor::MonitorEvent::native_into(item) }); };
- local_ret.into()
-}
-
-impl From<nativeChainMonitor> for crate::util::events::EventsProvider {
- fn from(obj: nativeChainMonitor) -> Self {
- let mut rust_obj = ChainMonitor { inner: Box::into_raw(Box::new(obj)), is_owned: true };
- let mut ret = ChainMonitor_as_EventsProvider(&rust_obj);
- // We want to free rust_obj when ret gets drop()'d, not rust_obj, so wipe rust_obj's pointer and set ret's free() fn
- rust_obj.inner = std::ptr::null_mut();
- ret.free = Some(ChainMonitor_free_void);
- ret
- }
-}
-#[no_mangle]
-pub extern "C" fn ChainMonitor_as_EventsProvider(this_arg: &ChainMonitor) -> crate::util::events::EventsProvider {
- crate::util::events::EventsProvider {
- this_arg: unsafe { (*this_arg).inner as *mut c_void },
- free: None,
- get_and_clear_pending_events: ChainMonitor_EventsProvider_get_and_clear_pending_events,
- }
-}
-
-#[must_use]
-extern "C" fn ChainMonitor_EventsProvider_get_and_clear_pending_events(this_arg: *const c_void) -> crate::c_types::derived::CVec_EventZ {
- let mut ret = <nativeChainMonitor as lightning::util::events::EventsProvider<>>::get_and_clear_pending_events(unsafe { &mut *(this_arg as *mut nativeChainMonitor) }, );
- let mut local_ret = Vec::new(); for mut item in ret.drain(..) { local_ret.push( { crate::util::events::Event::native_into(item) }); };
- local_ret.into()
-}
-
projects / rust-lightning / blobdiff