1 // This file is Copyright its original authors, visible in version control
2 // history and in the source files from which this was generated.
4 // This file is licensed under the license available in the LICENSE or LICENSE.md
5 // file in the root of this repository or, if no such file exists, the same
6 // license as that which applies to the original source files from which this
7 // source was automatically generated.
9 //! The logic to monitor for on-chain transactions and create the relevant claim responses lives
12 //! ChannelMonitor objects are generated by ChannelManager in response to relevant
13 //! messages/actions, and MUST be persisted to disk (and, preferably, remotely) before progress can
14 //! be made in responding to certain messages, see [`chain::Watch`] for more.
16 //! Note that ChannelMonitors are an important part of the lightning trust model and a copy of the
17 //! latest ChannelMonitor must always be actively monitoring for chain updates (and no out-of-date
18 //! ChannelMonitors should do so). Thus, if you're building rust-lightning into an HSM or other
19 //! security-domain-separated system design, you should consider having multiple paths for
20 //! ChannelMonitors to get out of the HSM and onto monitoring devices.
22 use std::str::FromStr;
24 use bitcoin::hashes::Hash;
25 use crate::c_types::*;
28 use lightning::chain::channelmonitor::ChannelMonitorUpdate as nativeChannelMonitorUpdateImport;
29 type nativeChannelMonitorUpdate = nativeChannelMonitorUpdateImport;
31 /// An update generated by the underlying Channel itself which contains some new information the
32 /// ChannelMonitor should be made aware of.
35 pub struct ChannelMonitorUpdate {
36 /// A pointer to the opaque Rust object.
38 /// Nearly everywhere, inner must be non-null, however in places where
39 /// the Rust equivalent takes an Option, it may be set to null to indicate None.
40 pub inner: *mut nativeChannelMonitorUpdate,
41 /// Indicates that this is the only struct which contains the same pointer.
43 /// Rust functions which take ownership of an object provided via an argument require
44 /// this to be true and invalidate the object pointed to by inner.
48 impl Drop for ChannelMonitorUpdate {
50 if self.is_owned && !<*mut nativeChannelMonitorUpdate>::is_null(self.inner) {
51 let _ = unsafe { Box::from_raw(ObjOps::untweak_ptr(self.inner)) };
55 /// Frees any resources used by the ChannelMonitorUpdate, if is_owned is set and inner is non-NULL.
57 pub extern "C" fn ChannelMonitorUpdate_free(this_obj: ChannelMonitorUpdate) { }
59 /// Used only if an object of this type is returned as a trait impl by a method
60 extern "C" fn ChannelMonitorUpdate_free_void(this_ptr: *mut c_void) {
61 unsafe { let _ = Box::from_raw(this_ptr as *mut nativeChannelMonitorUpdate); }
64 impl ChannelMonitorUpdate {
65 pub(crate) fn get_native_ref(&self) -> &'static nativeChannelMonitorUpdate {
66 unsafe { &*ObjOps::untweak_ptr(self.inner) }
68 pub(crate) fn get_native_mut_ref(&self) -> &'static mut nativeChannelMonitorUpdate {
69 unsafe { &mut *ObjOps::untweak_ptr(self.inner) }
71 /// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
72 pub(crate) fn take_inner(mut self) -> *mut nativeChannelMonitorUpdate {
73 assert!(self.is_owned);
74 let ret = ObjOps::untweak_ptr(self.inner);
75 self.inner = std::ptr::null_mut();
79 /// The sequence number of this update. Updates *must* be replayed in-order according to this
80 /// sequence number (and updates may panic if they are not). The update_id values are strictly
81 /// increasing and increase by one for each new update, with one exception specified below.
83 /// This sequence number is also used to track up to which points updates which returned
84 /// ChannelMonitorUpdateErr::TemporaryFailure have been applied to all copies of a given
85 /// ChannelMonitor when ChannelManager::channel_monitor_updated is called.
87 /// The only instance where update_id values are not strictly increasing is the case where we
88 /// allow post-force-close updates with a special update ID of [`CLOSED_CHANNEL_UPDATE_ID`]. See
89 /// its docs for more details.
91 pub extern "C" fn ChannelMonitorUpdate_get_update_id(this_ptr: &ChannelMonitorUpdate) -> u64 {
92 let mut inner_val = &mut this_ptr.get_native_mut_ref().update_id;
95 /// The sequence number of this update. Updates *must* be replayed in-order according to this
96 /// sequence number (and updates may panic if they are not). The update_id values are strictly
97 /// increasing and increase by one for each new update, with one exception specified below.
99 /// This sequence number is also used to track up to which points updates which returned
100 /// ChannelMonitorUpdateErr::TemporaryFailure have been applied to all copies of a given
101 /// ChannelMonitor when ChannelManager::channel_monitor_updated is called.
103 /// The only instance where update_id values are not strictly increasing is the case where we
104 /// allow post-force-close updates with a special update ID of [`CLOSED_CHANNEL_UPDATE_ID`]. See
105 /// its docs for more details.
107 pub extern "C" fn ChannelMonitorUpdate_set_update_id(this_ptr: &mut ChannelMonitorUpdate, mut val: u64) {
108 unsafe { &mut *ObjOps::untweak_ptr(this_ptr.inner) }.update_id = val;
110 impl Clone for ChannelMonitorUpdate {
111 fn clone(&self) -> Self {
113 inner: if <*mut nativeChannelMonitorUpdate>::is_null(self.inner) { std::ptr::null_mut() } else {
114 ObjOps::heap_alloc(unsafe { &*ObjOps::untweak_ptr(self.inner) }.clone()) },
120 /// Used only if an object of this type is returned as a trait impl by a method
121 pub(crate) extern "C" fn ChannelMonitorUpdate_clone_void(this_ptr: *const c_void) -> *mut c_void {
122 Box::into_raw(Box::new(unsafe { (*(this_ptr as *mut nativeChannelMonitorUpdate)).clone() })) as *mut c_void
125 /// Creates a copy of the ChannelMonitorUpdate
126 pub extern "C" fn ChannelMonitorUpdate_clone(orig: &ChannelMonitorUpdate) -> ChannelMonitorUpdate {
130 /// (1) a channel has been force closed and
131 /// (2) we receive a preimage from a forward link that allows us to spend an HTLC output on
132 /// this channel's (the backward link's) broadcasted commitment transaction
133 /// then we allow the `ChannelManager` to send a `ChannelMonitorUpdate` with this update ID,
134 /// with the update providing said payment preimage. No other update types are allowed after
138 pub static CLOSED_CHANNEL_UPDATE_ID: u64 = lightning::chain::channelmonitor::CLOSED_CHANNEL_UPDATE_ID;
140 /// Serialize the ChannelMonitorUpdate object into a byte array which can be read by ChannelMonitorUpdate_read
141 pub extern "C" fn ChannelMonitorUpdate_write(obj: &ChannelMonitorUpdate) -> crate::c_types::derived::CVec_u8Z {
142 crate::c_types::serialize_obj(unsafe { &*obj }.get_native_ref())
145 pub(crate) extern "C" fn ChannelMonitorUpdate_write_void(obj: *const c_void) -> crate::c_types::derived::CVec_u8Z {
146 crate::c_types::serialize_obj(unsafe { &*(obj as *const nativeChannelMonitorUpdate) })
149 /// Read a ChannelMonitorUpdate from a byte array, created by ChannelMonitorUpdate_write
150 pub extern "C" fn ChannelMonitorUpdate_read(ser: crate::c_types::u8slice) -> crate::c_types::derived::CResult_ChannelMonitorUpdateDecodeErrorZ {
151 let res = crate::c_types::deserialize_obj(ser);
152 let mut local_res = match res { Ok(mut o) => crate::c_types::CResultTempl::ok( { crate::lightning::chain::channelmonitor::ChannelMonitorUpdate { inner: ObjOps::heap_alloc(o), is_owned: true } }).into(), Err(mut e) => crate::c_types::CResultTempl::err( { crate::lightning::ln::msgs::DecodeError { inner: ObjOps::heap_alloc(e), is_owned: true } }).into() };
155 /// An error enum representing a failure to persist a channel monitor update.
159 pub enum ChannelMonitorUpdateErr {
160 /// Used to indicate a temporary failure (eg connection to a watchtower or remote backup of
161 /// our state failed, but is expected to succeed at some point in the future).
163 /// Such a failure will \"freeze\" a channel, preventing us from revoking old states or
164 /// submitting new commitment transactions to the counterparty. Once the update(s) which failed
165 /// have been successfully applied, ChannelManager::channel_monitor_updated can be used to
166 /// restore the channel to an operational state.
168 /// Note that a given ChannelManager will *never* re-generate a given ChannelMonitorUpdate. If
169 /// you return a TemporaryFailure you must ensure that it is written to disk safely before
170 /// writing out the latest ChannelManager state.
172 /// Even when a channel has been \"frozen\" updates to the ChannelMonitor can continue to occur
173 /// (eg if an inbound HTLC which we forwarded was claimed upstream resulting in us attempting
174 /// to claim it on this channel) and those updates must be applied wherever they can be. At
175 /// least one such updated ChannelMonitor must be persisted otherwise PermanentFailure should
176 /// be returned to get things on-chain ASAP using only the in-memory copy. Obviously updates to
177 /// the channel which would invalidate previous ChannelMonitors are not made when a channel has
180 /// Note that even if updates made after TemporaryFailure succeed you must still call
181 /// channel_monitor_updated to ensure you have the latest monitor and re-enable normal channel
184 /// Note that the update being processed here will not be replayed for you when you call
185 /// ChannelManager::channel_monitor_updated, so you must store the update itself along
186 /// with the persisted ChannelMonitor on your own local disk prior to returning a
187 /// TemporaryFailure. You may, of course, employ a journaling approach, storing only the
188 /// ChannelMonitorUpdate on disk without updating the monitor itself, replaying the journal at
191 /// For deployments where a copy of ChannelMonitors and other local state are backed up in a
192 /// remote location (with local copies persisted immediately), it is anticipated that all
193 /// updates will return TemporaryFailure until the remote copies could be updated.
195 /// Used to indicate no further channel monitor updates will be allowed (eg we've moved on to a
196 /// different watchtower and cannot update with all watchtowers that were previously informed
197 /// of this channel).
199 /// At reception of this error, ChannelManager will force-close the channel and return at
200 /// least a final ChannelMonitorUpdate::ChannelForceClosed which must be delivered to at
201 /// least one ChannelMonitor copy. Revocation secret MUST NOT be released and offchain channel
202 /// update must be rejected.
204 /// This failure may also signal a failure to update the local persisted copy of one of
205 /// the channel monitor instance.
207 /// Note that even when you fail a holder commitment transaction update, you must store the
208 /// update to ensure you can claim from it in case of a duplicate copy of this ChannelMonitor
209 /// broadcasts it (e.g distributed channel-monitor deployment)
211 /// In case of distributed watchtowers deployment, the new version must be written to disk, as
212 /// state may have been stored but rejected due to a block forcing a commitment broadcast. This
213 /// storage is used to claim outputs of rejected state confirmed onchain by another watchtower,
214 /// lagging behind on block processing.
217 use lightning::chain::channelmonitor::ChannelMonitorUpdateErr as nativeChannelMonitorUpdateErr;
218 impl ChannelMonitorUpdateErr {
220 pub(crate) fn to_native(&self) -> nativeChannelMonitorUpdateErr {
222 ChannelMonitorUpdateErr::TemporaryFailure => nativeChannelMonitorUpdateErr::TemporaryFailure,
223 ChannelMonitorUpdateErr::PermanentFailure => nativeChannelMonitorUpdateErr::PermanentFailure,
227 pub(crate) fn into_native(self) -> nativeChannelMonitorUpdateErr {
229 ChannelMonitorUpdateErr::TemporaryFailure => nativeChannelMonitorUpdateErr::TemporaryFailure,
230 ChannelMonitorUpdateErr::PermanentFailure => nativeChannelMonitorUpdateErr::PermanentFailure,
234 pub(crate) fn from_native(native: &nativeChannelMonitorUpdateErr) -> Self {
236 nativeChannelMonitorUpdateErr::TemporaryFailure => ChannelMonitorUpdateErr::TemporaryFailure,
237 nativeChannelMonitorUpdateErr::PermanentFailure => ChannelMonitorUpdateErr::PermanentFailure,
241 pub(crate) fn native_into(native: nativeChannelMonitorUpdateErr) -> Self {
243 nativeChannelMonitorUpdateErr::TemporaryFailure => ChannelMonitorUpdateErr::TemporaryFailure,
244 nativeChannelMonitorUpdateErr::PermanentFailure => ChannelMonitorUpdateErr::PermanentFailure,
248 /// Creates a copy of the ChannelMonitorUpdateErr
250 pub extern "C" fn ChannelMonitorUpdateErr_clone(orig: &ChannelMonitorUpdateErr) -> ChannelMonitorUpdateErr {
254 /// Utility method to constructs a new TemporaryFailure-variant ChannelMonitorUpdateErr
255 pub extern "C" fn ChannelMonitorUpdateErr_temporary_failure() -> ChannelMonitorUpdateErr {
256 ChannelMonitorUpdateErr::TemporaryFailure}
258 /// Utility method to constructs a new PermanentFailure-variant ChannelMonitorUpdateErr
259 pub extern "C" fn ChannelMonitorUpdateErr_permanent_failure() -> ChannelMonitorUpdateErr {
260 ChannelMonitorUpdateErr::PermanentFailure}
262 use lightning::chain::channelmonitor::MonitorUpdateError as nativeMonitorUpdateErrorImport;
263 type nativeMonitorUpdateError = nativeMonitorUpdateErrorImport;
265 /// General Err type for ChannelMonitor actions. Generally, this implies that the data provided is
266 /// inconsistent with the ChannelMonitor being called. eg for ChannelMonitor::update_monitor this
267 /// means you tried to update a monitor for a different channel or the ChannelMonitorUpdate was
269 /// Contains a developer-readable error message.
272 pub struct MonitorUpdateError {
273 /// A pointer to the opaque Rust object.
275 /// Nearly everywhere, inner must be non-null, however in places where
276 /// the Rust equivalent takes an Option, it may be set to null to indicate None.
277 pub inner: *mut nativeMonitorUpdateError,
278 /// Indicates that this is the only struct which contains the same pointer.
280 /// Rust functions which take ownership of an object provided via an argument require
281 /// this to be true and invalidate the object pointed to by inner.
285 impl Drop for MonitorUpdateError {
287 if self.is_owned && !<*mut nativeMonitorUpdateError>::is_null(self.inner) {
288 let _ = unsafe { Box::from_raw(ObjOps::untweak_ptr(self.inner)) };
292 /// Frees any resources used by the MonitorUpdateError, if is_owned is set and inner is non-NULL.
294 pub extern "C" fn MonitorUpdateError_free(this_obj: MonitorUpdateError) { }
296 /// Used only if an object of this type is returned as a trait impl by a method
297 extern "C" fn MonitorUpdateError_free_void(this_ptr: *mut c_void) {
298 unsafe { let _ = Box::from_raw(this_ptr as *mut nativeMonitorUpdateError); }
301 impl MonitorUpdateError {
302 pub(crate) fn get_native_ref(&self) -> &'static nativeMonitorUpdateError {
303 unsafe { &*ObjOps::untweak_ptr(self.inner) }
305 pub(crate) fn get_native_mut_ref(&self) -> &'static mut nativeMonitorUpdateError {
306 unsafe { &mut *ObjOps::untweak_ptr(self.inner) }
308 /// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
309 pub(crate) fn take_inner(mut self) -> *mut nativeMonitorUpdateError {
310 assert!(self.is_owned);
311 let ret = ObjOps::untweak_ptr(self.inner);
312 self.inner = std::ptr::null_mut();
316 impl Clone for MonitorUpdateError {
317 fn clone(&self) -> Self {
319 inner: if <*mut nativeMonitorUpdateError>::is_null(self.inner) { std::ptr::null_mut() } else {
320 ObjOps::heap_alloc(unsafe { &*ObjOps::untweak_ptr(self.inner) }.clone()) },
326 /// Used only if an object of this type is returned as a trait impl by a method
327 pub(crate) extern "C" fn MonitorUpdateError_clone_void(this_ptr: *const c_void) -> *mut c_void {
328 Box::into_raw(Box::new(unsafe { (*(this_ptr as *mut nativeMonitorUpdateError)).clone() })) as *mut c_void
331 /// Creates a copy of the MonitorUpdateError
332 pub extern "C" fn MonitorUpdateError_clone(orig: &MonitorUpdateError) -> MonitorUpdateError {
335 /// An event to be processed by the ChannelManager.
339 pub enum MonitorEvent {
340 /// A monitor event containing an HTLCUpdate.
341 HTLCEvent(crate::lightning::chain::channelmonitor::HTLCUpdate),
342 /// A monitor event that the Channel's commitment transaction was broadcasted.
343 CommitmentTxBroadcasted(crate::lightning::chain::transaction::OutPoint),
345 use lightning::chain::channelmonitor::MonitorEvent as nativeMonitorEvent;
348 pub(crate) fn to_native(&self) -> nativeMonitorEvent {
350 MonitorEvent::HTLCEvent (ref a, ) => {
351 let mut a_nonref = (*a).clone();
352 nativeMonitorEvent::HTLCEvent (
353 *unsafe { Box::from_raw(a_nonref.take_inner()) },
356 MonitorEvent::CommitmentTxBroadcasted (ref a, ) => {
357 let mut a_nonref = (*a).clone();
358 nativeMonitorEvent::CommitmentTxBroadcasted (
359 *unsafe { Box::from_raw(a_nonref.take_inner()) },
365 pub(crate) fn into_native(self) -> nativeMonitorEvent {
367 MonitorEvent::HTLCEvent (mut a, ) => {
368 nativeMonitorEvent::HTLCEvent (
369 *unsafe { Box::from_raw(a.take_inner()) },
372 MonitorEvent::CommitmentTxBroadcasted (mut a, ) => {
373 nativeMonitorEvent::CommitmentTxBroadcasted (
374 *unsafe { Box::from_raw(a.take_inner()) },
380 pub(crate) fn from_native(native: &nativeMonitorEvent) -> Self {
382 nativeMonitorEvent::HTLCEvent (ref a, ) => {
383 let mut a_nonref = (*a).clone();
384 MonitorEvent::HTLCEvent (
385 crate::lightning::chain::channelmonitor::HTLCUpdate { inner: ObjOps::heap_alloc(a_nonref), is_owned: true },
388 nativeMonitorEvent::CommitmentTxBroadcasted (ref a, ) => {
389 let mut a_nonref = (*a).clone();
390 MonitorEvent::CommitmentTxBroadcasted (
391 crate::lightning::chain::transaction::OutPoint { inner: ObjOps::heap_alloc(a_nonref), is_owned: true },
397 pub(crate) fn native_into(native: nativeMonitorEvent) -> Self {
399 nativeMonitorEvent::HTLCEvent (mut a, ) => {
400 MonitorEvent::HTLCEvent (
401 crate::lightning::chain::channelmonitor::HTLCUpdate { inner: ObjOps::heap_alloc(a), is_owned: true },
404 nativeMonitorEvent::CommitmentTxBroadcasted (mut a, ) => {
405 MonitorEvent::CommitmentTxBroadcasted (
406 crate::lightning::chain::transaction::OutPoint { inner: ObjOps::heap_alloc(a), is_owned: true },
412 /// Frees any resources used by the MonitorEvent
414 pub extern "C" fn MonitorEvent_free(this_ptr: MonitorEvent) { }
415 /// Creates a copy of the MonitorEvent
417 pub extern "C" fn MonitorEvent_clone(orig: &MonitorEvent) -> MonitorEvent {
421 /// Utility method to constructs a new HTLCEvent-variant MonitorEvent
422 pub extern "C" fn MonitorEvent_htlcevent(a: crate::lightning::chain::channelmonitor::HTLCUpdate) -> MonitorEvent {
423 MonitorEvent::HTLCEvent(a, )
426 /// Utility method to constructs a new CommitmentTxBroadcasted-variant MonitorEvent
427 pub extern "C" fn MonitorEvent_commitment_tx_broadcasted(a: crate::lightning::chain::transaction::OutPoint) -> MonitorEvent {
428 MonitorEvent::CommitmentTxBroadcasted(a, )
431 use lightning::chain::channelmonitor::HTLCUpdate as nativeHTLCUpdateImport;
432 type nativeHTLCUpdate = nativeHTLCUpdateImport;
434 /// Simple structure sent back by `chain::Watch` when an HTLC from a forward channel is detected on
435 /// chain. Used to update the corresponding HTLC in the backward channel. Failing to pass the
436 /// preimage claim backward will lead to loss of funds.
439 pub struct HTLCUpdate {
440 /// A pointer to the opaque Rust object.
442 /// Nearly everywhere, inner must be non-null, however in places where
443 /// the Rust equivalent takes an Option, it may be set to null to indicate None.
444 pub inner: *mut nativeHTLCUpdate,
445 /// Indicates that this is the only struct which contains the same pointer.
447 /// Rust functions which take ownership of an object provided via an argument require
448 /// this to be true and invalidate the object pointed to by inner.
452 impl Drop for HTLCUpdate {
454 if self.is_owned && !<*mut nativeHTLCUpdate>::is_null(self.inner) {
455 let _ = unsafe { Box::from_raw(ObjOps::untweak_ptr(self.inner)) };
459 /// Frees any resources used by the HTLCUpdate, if is_owned is set and inner is non-NULL.
461 pub extern "C" fn HTLCUpdate_free(this_obj: HTLCUpdate) { }
463 /// Used only if an object of this type is returned as a trait impl by a method
464 extern "C" fn HTLCUpdate_free_void(this_ptr: *mut c_void) {
465 unsafe { let _ = Box::from_raw(this_ptr as *mut nativeHTLCUpdate); }
469 pub(crate) fn get_native_ref(&self) -> &'static nativeHTLCUpdate {
470 unsafe { &*ObjOps::untweak_ptr(self.inner) }
472 pub(crate) fn get_native_mut_ref(&self) -> &'static mut nativeHTLCUpdate {
473 unsafe { &mut *ObjOps::untweak_ptr(self.inner) }
475 /// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
476 pub(crate) fn take_inner(mut self) -> *mut nativeHTLCUpdate {
477 assert!(self.is_owned);
478 let ret = ObjOps::untweak_ptr(self.inner);
479 self.inner = std::ptr::null_mut();
483 impl Clone for HTLCUpdate {
484 fn clone(&self) -> Self {
486 inner: if <*mut nativeHTLCUpdate>::is_null(self.inner) { std::ptr::null_mut() } else {
487 ObjOps::heap_alloc(unsafe { &*ObjOps::untweak_ptr(self.inner) }.clone()) },
493 /// Used only if an object of this type is returned as a trait impl by a method
494 pub(crate) extern "C" fn HTLCUpdate_clone_void(this_ptr: *const c_void) -> *mut c_void {
495 Box::into_raw(Box::new(unsafe { (*(this_ptr as *mut nativeHTLCUpdate)).clone() })) as *mut c_void
498 /// Creates a copy of the HTLCUpdate
499 pub extern "C" fn HTLCUpdate_clone(orig: &HTLCUpdate) -> HTLCUpdate {
503 /// Serialize the HTLCUpdate object into a byte array which can be read by HTLCUpdate_read
504 pub extern "C" fn HTLCUpdate_write(obj: &HTLCUpdate) -> crate::c_types::derived::CVec_u8Z {
505 crate::c_types::serialize_obj(unsafe { &*obj }.get_native_ref())
508 pub(crate) extern "C" fn HTLCUpdate_write_void(obj: *const c_void) -> crate::c_types::derived::CVec_u8Z {
509 crate::c_types::serialize_obj(unsafe { &*(obj as *const nativeHTLCUpdate) })
512 /// Read a HTLCUpdate from a byte array, created by HTLCUpdate_write
513 pub extern "C" fn HTLCUpdate_read(ser: crate::c_types::u8slice) -> crate::c_types::derived::CResult_HTLCUpdateDecodeErrorZ {
514 let res = crate::c_types::deserialize_obj(ser);
515 let mut local_res = match res { Ok(mut o) => crate::c_types::CResultTempl::ok( { crate::lightning::chain::channelmonitor::HTLCUpdate { inner: ObjOps::heap_alloc(o), is_owned: true } }).into(), Err(mut e) => crate::c_types::CResultTempl::err( { crate::lightning::ln::msgs::DecodeError { inner: ObjOps::heap_alloc(e), is_owned: true } }).into() };
518 /// Number of blocks we wait on seeing a HTLC output being solved before we fail corresponding inbound
519 /// HTLCs. This prevents us from failing backwards and then getting a reorg resulting in us losing money.
522 pub static ANTI_REORG_DELAY: u32 = lightning::chain::channelmonitor::ANTI_REORG_DELAY;
524 use lightning::chain::channelmonitor::ChannelMonitor as nativeChannelMonitorImport;
525 type nativeChannelMonitor = nativeChannelMonitorImport<crate::lightning::chain::keysinterface::Sign>;
527 /// A ChannelMonitor handles chain events (blocks connected and disconnected) and generates
528 /// on-chain transactions to ensure no loss of funds occurs.
530 /// You MUST ensure that no ChannelMonitors for a given channel anywhere contain out-of-date
531 /// information and are actively monitoring the chain.
533 /// Pending Events or updated HTLCs which have not yet been read out by
534 /// get_and_clear_pending_monitor_events or get_and_clear_pending_events are serialized to disk and
535 /// reloaded at deserialize-time. Thus, you must ensure that, when handling events, all events
536 /// gotten are fully handled before re-serializing the new state.
538 /// Note that the deserializer is only implemented for (BlockHash, ChannelMonitor), which
539 /// tells you the last block hash which was block_connect()ed. You MUST rescan any blocks along
540 /// the \"reorg path\" (ie disconnecting blocks until you find a common ancestor from both the
541 /// returned block hash and the the current chain and then reconnecting blocks to get to the
542 /// best chain) upon deserializing the object!
545 pub struct ChannelMonitor {
546 /// A pointer to the opaque Rust object.
548 /// Nearly everywhere, inner must be non-null, however in places where
549 /// the Rust equivalent takes an Option, it may be set to null to indicate None.
550 pub inner: *mut nativeChannelMonitor,
551 /// Indicates that this is the only struct which contains the same pointer.
553 /// Rust functions which take ownership of an object provided via an argument require
554 /// this to be true and invalidate the object pointed to by inner.
558 impl Drop for ChannelMonitor {
560 if self.is_owned && !<*mut nativeChannelMonitor>::is_null(self.inner) {
561 let _ = unsafe { Box::from_raw(ObjOps::untweak_ptr(self.inner)) };
565 /// Frees any resources used by the ChannelMonitor, if is_owned is set and inner is non-NULL.
567 pub extern "C" fn ChannelMonitor_free(this_obj: ChannelMonitor) { }
569 /// Used only if an object of this type is returned as a trait impl by a method
570 extern "C" fn ChannelMonitor_free_void(this_ptr: *mut c_void) {
571 unsafe { let _ = Box::from_raw(this_ptr as *mut nativeChannelMonitor); }
574 impl ChannelMonitor {
575 pub(crate) fn get_native_ref(&self) -> &'static nativeChannelMonitor {
576 unsafe { &*ObjOps::untweak_ptr(self.inner) }
578 pub(crate) fn get_native_mut_ref(&self) -> &'static mut nativeChannelMonitor {
579 unsafe { &mut *ObjOps::untweak_ptr(self.inner) }
581 /// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
582 pub(crate) fn take_inner(mut self) -> *mut nativeChannelMonitor {
583 assert!(self.is_owned);
584 let ret = ObjOps::untweak_ptr(self.inner);
585 self.inner = std::ptr::null_mut();
590 /// Serialize the ChannelMonitor object into a byte array which can be read by ChannelMonitor_read
591 pub extern "C" fn ChannelMonitor_write(obj: &ChannelMonitor) -> crate::c_types::derived::CVec_u8Z {
592 crate::c_types::serialize_obj(unsafe { &*obj }.get_native_ref())
595 pub(crate) extern "C" fn ChannelMonitor_write_void(obj: *const c_void) -> crate::c_types::derived::CVec_u8Z {
596 crate::c_types::serialize_obj(unsafe { &*(obj as *const nativeChannelMonitor) })
598 /// Updates a ChannelMonitor on the basis of some new information provided by the Channel
601 /// panics if the given update is not the next update by update_id.
604 pub extern "C" fn ChannelMonitor_update_monitor(this_arg: &ChannelMonitor, updates: &crate::lightning::chain::channelmonitor::ChannelMonitorUpdate, broadcaster: &crate::lightning::chain::chaininterface::BroadcasterInterface, fee_estimator: &crate::lightning::chain::chaininterface::FeeEstimator, logger: &crate::lightning::util::logger::Logger) -> crate::c_types::derived::CResult_NoneMonitorUpdateErrorZ {
605 let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.update_monitor(updates.get_native_ref(), broadcaster, fee_estimator, logger);
606 let mut local_ret = match ret { Ok(mut o) => crate::c_types::CResultTempl::ok( { () /*o*/ }).into(), Err(mut e) => crate::c_types::CResultTempl::err( { crate::lightning::chain::channelmonitor::MonitorUpdateError { inner: ObjOps::heap_alloc(e), is_owned: true } }).into() };
610 /// Gets the update_id from the latest ChannelMonitorUpdate which was applied to this
614 pub extern "C" fn ChannelMonitor_get_latest_update_id(this_arg: &ChannelMonitor) -> u64 {
615 let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.get_latest_update_id();
619 /// Gets the funding transaction outpoint of the channel this ChannelMonitor is monitoring for.
622 pub extern "C" fn ChannelMonitor_get_funding_txo(this_arg: &ChannelMonitor) -> crate::c_types::derived::C2Tuple_OutPointScriptZ {
623 let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.get_funding_txo();
624 let (mut orig_ret_0, mut orig_ret_1) = ret; let mut local_ret = (crate::lightning::chain::transaction::OutPoint { inner: ObjOps::heap_alloc(orig_ret_0), is_owned: true }, orig_ret_1.into_bytes().into()).into();
628 /// Gets a list of txids, with their output scripts (in the order they appear in the
629 /// transaction), which we must learn about spends of via block_connected().
632 pub extern "C" fn ChannelMonitor_get_outputs_to_watch(this_arg: &ChannelMonitor) -> crate::c_types::derived::CVec_C2Tuple_TxidCVec_C2Tuple_u32ScriptZZZZ {
633 let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.get_outputs_to_watch();
634 let mut local_ret = Vec::new(); for mut item in ret.drain(..) { local_ret.push( { let (mut orig_ret_0_0, mut orig_ret_0_1) = item; let mut local_orig_ret_0_1 = Vec::new(); for mut item in orig_ret_0_1.drain(..) { local_orig_ret_0_1.push( { let (mut orig_orig_ret_0_1_0_0, mut orig_orig_ret_0_1_0_1) = item; let mut local_orig_ret_0_1_0 = (orig_orig_ret_0_1_0_0, orig_orig_ret_0_1_0_1.into_bytes().into()).into(); local_orig_ret_0_1_0 }); }; let mut local_ret_0 = (crate::c_types::ThirtyTwoBytes { data: orig_ret_0_0.into_inner() }, local_orig_ret_0_1.into()).into(); local_ret_0 }); };
638 /// Loads the funding txo and outputs to watch into the given `chain::Filter` by repeatedly
639 /// calling `chain::Filter::register_output` and `chain::Filter::register_tx` until all outputs
640 /// have been registered.
642 pub extern "C" fn ChannelMonitor_load_outputs_to_watch(this_arg: &ChannelMonitor, filter: &crate::lightning::chain::Filter) {
643 unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.load_outputs_to_watch(filter)
646 /// Get the list of HTLCs who's status has been updated on chain. This should be called by
647 /// ChannelManager via [`chain::Watch::release_pending_monitor_events`].
650 pub extern "C" fn ChannelMonitor_get_and_clear_pending_monitor_events(this_arg: &ChannelMonitor) -> crate::c_types::derived::CVec_MonitorEventZ {
651 let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.get_and_clear_pending_monitor_events();
652 let mut local_ret = Vec::new(); for mut item in ret.drain(..) { local_ret.push( { crate::lightning::chain::channelmonitor::MonitorEvent::native_into(item) }); };
656 /// Gets the list of pending events which were generated by previous actions, clearing the list
659 /// This is called by ChainMonitor::get_and_clear_pending_events() and is equivalent to
660 /// EventsProvider::get_and_clear_pending_events() except that it requires &mut self as we do
661 /// no internal locking in ChannelMonitors.
664 pub extern "C" fn ChannelMonitor_get_and_clear_pending_events(this_arg: &ChannelMonitor) -> crate::c_types::derived::CVec_EventZ {
665 let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.get_and_clear_pending_events();
666 let mut local_ret = Vec::new(); for mut item in ret.drain(..) { local_ret.push( { crate::lightning::util::events::Event::native_into(item) }); };
670 /// Used by ChannelManager deserialization to broadcast the latest holder state if its copy of
671 /// the Channel was out-of-date. You may use it to get a broadcastable holder toxic tx in case of
672 /// fallen-behind, i.e when receiving a channel_reestablish with a proof that our counterparty side knows
673 /// a higher revocation secret than the holder commitment number we are aware of. Broadcasting these
674 /// transactions are UNSAFE, as they allow counterparty side to punish you. Nevertheless you may want to
675 /// broadcast them if counterparty don't close channel with his higher commitment transaction after a
676 /// substantial amount of time (a month or even a year) to get back funds. Best may be to contact
677 /// out-of-band the other node operator to coordinate with him if option is available to you.
678 /// In any-case, choice is up to the user.
681 pub extern "C" fn ChannelMonitor_get_latest_holder_commitment_txn(this_arg: &ChannelMonitor, logger: &crate::lightning::util::logger::Logger) -> crate::c_types::derived::CVec_TransactionZ {
682 let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.get_latest_holder_commitment_txn(logger);
683 let mut local_ret = Vec::new(); for mut item in ret.drain(..) { local_ret.push( { crate::c_types::Transaction::from_bitcoin(&item) }); };
687 /// Processes transactions in a newly connected block, which may result in any of the following:
688 /// - update the monitor's state against resolved HTLCs
689 /// - punish the counterparty in the case of seeing a revoked commitment transaction
690 /// - force close the channel and claim/timeout incoming/outgoing HTLCs if near expiration
691 /// - detect settled outputs for later spending
692 /// - schedule and bump any in-flight claims
694 /// Returns any new outputs to watch from `txdata`; after called, these are also included in
695 /// [`get_outputs_to_watch`].
697 /// [`get_outputs_to_watch`]: #method.get_outputs_to_watch
700 pub extern "C" fn ChannelMonitor_block_connected(this_arg: &ChannelMonitor, header: *const [u8; 80], mut txdata: crate::c_types::derived::CVec_C2Tuple_usizeTransactionZZ, mut height: u32, mut broadcaster: crate::lightning::chain::chaininterface::BroadcasterInterface, mut fee_estimator: crate::lightning::chain::chaininterface::FeeEstimator, mut logger: crate::lightning::util::logger::Logger) -> crate::c_types::derived::CVec_TransactionOutputsZ {
701 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 }); };
702 let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.block_connected(&::bitcoin::consensus::encode::deserialize(unsafe { &*header }).unwrap(), &local_txdata.iter().map(|(a, b)| (*a, b)).collect::<Vec<_>>()[..], height, broadcaster, fee_estimator, logger);
703 let mut local_ret = Vec::new(); for mut item in ret.drain(..) { local_ret.push( { let (mut orig_ret_0_0, mut orig_ret_0_1) = item; let mut local_orig_ret_0_1 = Vec::new(); for mut item in orig_ret_0_1.drain(..) { local_orig_ret_0_1.push( { let (mut orig_orig_ret_0_1_0_0, mut orig_orig_ret_0_1_0_1) = item; let mut local_orig_ret_0_1_0 = (orig_orig_ret_0_1_0_0, crate::c_types::TxOut::from_rust(orig_orig_ret_0_1_0_1)).into(); local_orig_ret_0_1_0 }); }; let mut local_ret_0 = (crate::c_types::ThirtyTwoBytes { data: orig_ret_0_0.into_inner() }, local_orig_ret_0_1.into()).into(); local_ret_0 }); };
707 /// Determines if the disconnected block contained any transactions of interest and updates
710 pub extern "C" fn ChannelMonitor_block_disconnected(this_arg: &ChannelMonitor, header: *const [u8; 80], mut height: u32, mut broadcaster: crate::lightning::chain::chaininterface::BroadcasterInterface, mut fee_estimator: crate::lightning::chain::chaininterface::FeeEstimator, mut logger: crate::lightning::util::logger::Logger) {
711 unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.block_disconnected(&::bitcoin::consensus::encode::deserialize(unsafe { &*header }).unwrap(), height, broadcaster, fee_estimator, logger)
714 /// Processes transactions confirmed in a block with the given header and height, returning new
715 /// outputs to watch. See [`block_connected`] for details.
717 /// Used instead of [`block_connected`] by clients that are notified of transactions rather than
718 /// blocks. See [`chain::Confirm`] for calling expectations.
720 /// [`block_connected`]: Self::block_connected
723 pub extern "C" fn ChannelMonitor_transactions_confirmed(this_arg: &ChannelMonitor, header: *const [u8; 80], mut txdata: crate::c_types::derived::CVec_C2Tuple_usizeTransactionZZ, mut height: u32, mut broadcaster: crate::lightning::chain::chaininterface::BroadcasterInterface, mut fee_estimator: crate::lightning::chain::chaininterface::FeeEstimator, mut logger: crate::lightning::util::logger::Logger) -> crate::c_types::derived::CVec_TransactionOutputsZ {
724 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 }); };
725 let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.transactions_confirmed(&::bitcoin::consensus::encode::deserialize(unsafe { &*header }).unwrap(), &local_txdata.iter().map(|(a, b)| (*a, b)).collect::<Vec<_>>()[..], height, broadcaster, fee_estimator, logger);
726 let mut local_ret = Vec::new(); for mut item in ret.drain(..) { local_ret.push( { let (mut orig_ret_0_0, mut orig_ret_0_1) = item; let mut local_orig_ret_0_1 = Vec::new(); for mut item in orig_ret_0_1.drain(..) { local_orig_ret_0_1.push( { let (mut orig_orig_ret_0_1_0_0, mut orig_orig_ret_0_1_0_1) = item; let mut local_orig_ret_0_1_0 = (orig_orig_ret_0_1_0_0, crate::c_types::TxOut::from_rust(orig_orig_ret_0_1_0_1)).into(); local_orig_ret_0_1_0 }); }; let mut local_ret_0 = (crate::c_types::ThirtyTwoBytes { data: orig_ret_0_0.into_inner() }, local_orig_ret_0_1.into()).into(); local_ret_0 }); };
730 /// Processes a transaction that was reorganized out of the chain.
732 /// Used instead of [`block_disconnected`] by clients that are notified of transactions rather
733 /// than blocks. See [`chain::Confirm`] for calling expectations.
735 /// [`block_disconnected`]: Self::block_disconnected
737 pub extern "C" fn ChannelMonitor_transaction_unconfirmed(this_arg: &ChannelMonitor, txid: *const [u8; 32], mut broadcaster: crate::lightning::chain::chaininterface::BroadcasterInterface, mut fee_estimator: crate::lightning::chain::chaininterface::FeeEstimator, mut logger: crate::lightning::util::logger::Logger) {
738 unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.transaction_unconfirmed(&::bitcoin::hash_types::Txid::from_slice(&unsafe { &*txid }[..]).unwrap(), broadcaster, fee_estimator, logger)
741 /// Updates the monitor with the current best chain tip, returning new outputs to watch. See
742 /// [`block_connected`] for details.
744 /// Used instead of [`block_connected`] by clients that are notified of transactions rather than
745 /// blocks. See [`chain::Confirm`] for calling expectations.
747 /// [`block_connected`]: Self::block_connected
750 pub extern "C" fn ChannelMonitor_best_block_updated(this_arg: &ChannelMonitor, header: *const [u8; 80], mut height: u32, mut broadcaster: crate::lightning::chain::chaininterface::BroadcasterInterface, mut fee_estimator: crate::lightning::chain::chaininterface::FeeEstimator, mut logger: crate::lightning::util::logger::Logger) -> crate::c_types::derived::CVec_TransactionOutputsZ {
751 let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.best_block_updated(&::bitcoin::consensus::encode::deserialize(unsafe { &*header }).unwrap(), height, broadcaster, fee_estimator, logger);
752 let mut local_ret = Vec::new(); for mut item in ret.drain(..) { local_ret.push( { let (mut orig_ret_0_0, mut orig_ret_0_1) = item; let mut local_orig_ret_0_1 = Vec::new(); for mut item in orig_ret_0_1.drain(..) { local_orig_ret_0_1.push( { let (mut orig_orig_ret_0_1_0_0, mut orig_orig_ret_0_1_0_1) = item; let mut local_orig_ret_0_1_0 = (orig_orig_ret_0_1_0_0, crate::c_types::TxOut::from_rust(orig_orig_ret_0_1_0_1)).into(); local_orig_ret_0_1_0 }); }; let mut local_ret_0 = (crate::c_types::ThirtyTwoBytes { data: orig_ret_0_0.into_inner() }, local_orig_ret_0_1.into()).into(); local_ret_0 }); };
756 /// Returns the set of txids that should be monitored for re-organization out of the chain.
759 pub extern "C" fn ChannelMonitor_get_relevant_txids(this_arg: &ChannelMonitor) -> crate::c_types::derived::CVec_TxidZ {
760 let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.get_relevant_txids();
761 let mut local_ret = Vec::new(); for mut item in ret.drain(..) { local_ret.push( { crate::c_types::ThirtyTwoBytes { data: item.into_inner() } }); };
765 /// Gets the latest best block which was connected either via the [`chain::Listen`] or
766 /// [`chain::Confirm`] interfaces.
769 pub extern "C" fn ChannelMonitor_current_best_block(this_arg: &ChannelMonitor) -> crate::lightning::chain::BestBlock {
770 let mut ret = unsafe { &*ObjOps::untweak_ptr(this_arg.inner) }.current_best_block();
771 crate::lightning::chain::BestBlock { inner: ObjOps::heap_alloc(ret), is_owned: true }
774 /// `Persist` defines behavior for persisting channel monitors: this could mean
775 /// writing once to disk, and/or uploading to one or more backup services.
777 /// Note that for every new monitor, you **must** persist the new `ChannelMonitor`
778 /// to disk/backups. And, on every update, you **must** persist either the
779 /// `ChannelMonitorUpdate` or the updated monitor itself. Otherwise, there is risk
780 /// of situations such as revoking a transaction, then crashing before this
781 /// revocation can be persisted, then unintentionally broadcasting a revoked
782 /// transaction and losing money. This is a risk because previous channel states
783 /// are toxic, so it's important that whatever channel state is persisted is
787 /// An opaque pointer which is passed to your function implementations as an argument.
788 /// This has no meaning in the LDK, and can be NULL or any other value.
789 pub this_arg: *mut c_void,
790 /// Persist a new channel's data. The data can be stored any way you want, but
791 /// the identifier provided by Rust-Lightning is the channel's outpoint (and
792 /// it is up to you to maintain a correct mapping between the outpoint and the
793 /// stored channel data). Note that you **must** persist every new monitor to
794 /// disk. See the `Persist` trait documentation for more details.
796 /// See [`ChannelMonitor::write`] for writing out a `ChannelMonitor`,
797 /// and [`ChannelMonitorUpdateErr`] for requirements when returning errors.
799 pub persist_new_channel: extern "C" fn (this_arg: *const c_void, id: crate::lightning::chain::transaction::OutPoint, data: &crate::lightning::chain::channelmonitor::ChannelMonitor) -> crate::c_types::derived::CResult_NoneChannelMonitorUpdateErrZ,
800 /// Update one channel's data. The provided `ChannelMonitor` has already
801 /// applied the given update.
803 /// Note that on every update, you **must** persist either the
804 /// `ChannelMonitorUpdate` or the updated monitor itself to disk/backups. See
805 /// the `Persist` trait documentation for more details.
807 /// If an implementer chooses to persist the updates only, they need to make
808 /// sure that all the updates are applied to the `ChannelMonitors` *before*
809 /// the set of channel monitors is given to the `ChannelManager`
810 /// deserialization routine. See [`ChannelMonitor::update_monitor`] for
811 /// applying a monitor update to a monitor. If full `ChannelMonitors` are
812 /// persisted, then there is no need to persist individual updates.
814 /// Note that there could be a performance tradeoff between persisting complete
815 /// channel monitors on every update vs. persisting only updates and applying
816 /// them in batches. The size of each monitor grows `O(number of state updates)`
817 /// whereas updates are small and `O(1)`.
819 /// See [`ChannelMonitor::write`] for writing out a `ChannelMonitor`,
820 /// [`ChannelMonitorUpdate::write`] for writing out an update, and
821 /// [`ChannelMonitorUpdateErr`] for requirements when returning errors.
823 pub update_persisted_channel: extern "C" fn (this_arg: *const c_void, id: crate::lightning::chain::transaction::OutPoint, update: &crate::lightning::chain::channelmonitor::ChannelMonitorUpdate, data: &crate::lightning::chain::channelmonitor::ChannelMonitor) -> crate::c_types::derived::CResult_NoneChannelMonitorUpdateErrZ,
824 /// Frees any resources associated with this object given its this_arg pointer.
825 /// Does not need to free the outer struct containing function pointers and may be NULL is no resources need to be freed.
826 pub free: Option<extern "C" fn(this_arg: *mut c_void)>,
828 unsafe impl Send for Persist {}
829 unsafe impl Sync for Persist {}
831 pub(crate) extern "C" fn Persist_clone_fields(orig: &Persist) -> Persist {
833 this_arg: orig.this_arg,
834 persist_new_channel: Clone::clone(&orig.persist_new_channel),
835 update_persisted_channel: Clone::clone(&orig.update_persisted_channel),
836 free: Clone::clone(&orig.free),
840 use lightning::chain::channelmonitor::Persist as rustPersist;
841 impl rustPersist<crate::lightning::chain::keysinterface::Sign> for Persist {
842 fn persist_new_channel(&self, mut id: lightning::chain::transaction::OutPoint, mut data: &lightning::chain::channelmonitor::ChannelMonitor<crate::lightning::chain::keysinterface::Sign>) -> Result<(), lightning::chain::channelmonitor::ChannelMonitorUpdateErr> {
843 let mut ret = (self.persist_new_channel)(self.this_arg, crate::lightning::chain::transaction::OutPoint { inner: ObjOps::heap_alloc(id), is_owned: true }, &crate::lightning::chain::channelmonitor::ChannelMonitor { inner: unsafe { ObjOps::nonnull_ptr_to_inner((data as *const _) as *mut _) }, is_owned: false });
844 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() })};
847 fn update_persisted_channel(&self, mut id: lightning::chain::transaction::OutPoint, mut update: &lightning::chain::channelmonitor::ChannelMonitorUpdate, mut data: &lightning::chain::channelmonitor::ChannelMonitor<crate::lightning::chain::keysinterface::Sign>) -> Result<(), lightning::chain::channelmonitor::ChannelMonitorUpdateErr> {
848 let mut ret = (self.update_persisted_channel)(self.this_arg, crate::lightning::chain::transaction::OutPoint { inner: ObjOps::heap_alloc(id), is_owned: true }, &crate::lightning::chain::channelmonitor::ChannelMonitorUpdate { inner: unsafe { ObjOps::nonnull_ptr_to_inner((update as *const _) as *mut _) }, is_owned: false }, &crate::lightning::chain::channelmonitor::ChannelMonitor { inner: unsafe { ObjOps::nonnull_ptr_to_inner((data as *const _) as *mut _) }, is_owned: false });
849 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() })};
854 // We're essentially a pointer already, or at least a set of pointers, so allow us to be used
855 // directly as a Deref trait in higher-level structs:
856 impl std::ops::Deref for Persist {
858 fn deref(&self) -> &Self {
862 /// Calls the free function if one is set
864 pub extern "C" fn Persist_free(this_ptr: Persist) { }
865 impl Drop for Persist {
867 if let Some(f) = self.free {
873 /// Read a C2Tuple_BlockHashChannelMonitorZ from a byte array, created by C2Tuple_BlockHashChannelMonitorZ_write
874 pub extern "C" fn C2Tuple_BlockHashChannelMonitorZ_read(ser: crate::c_types::u8slice, arg: &crate::lightning::chain::keysinterface::KeysInterface) -> crate::c_types::derived::CResult_C2Tuple_BlockHashChannelMonitorZDecodeErrorZ {
876 let res: Result<(bitcoin::hash_types::BlockHash, lightning::chain::channelmonitor::ChannelMonitor<crate::lightning::chain::keysinterface::Sign>), lightning::ln::msgs::DecodeError> = crate::c_types::deserialize_obj_arg(ser, arg_conv);
877 let mut local_res = match res { Ok(mut o) => crate::c_types::CResultTempl::ok( { let (mut orig_res_0_0, mut orig_res_0_1) = o; let mut local_res_0 = (crate::c_types::ThirtyTwoBytes { data: orig_res_0_0.into_inner() }, crate::lightning::chain::channelmonitor::ChannelMonitor { inner: ObjOps::heap_alloc(orig_res_0_1), is_owned: true }).into(); local_res_0 }).into(), Err(mut e) => crate::c_types::CResultTempl::err( { crate::lightning::ln::msgs::DecodeError { inner: ObjOps::heap_alloc(e), is_owned: true } }).into() };