use chain;
use chain::{Confirm, Watch, BestBlock};
-use chain::chaininterface::{BroadcasterInterface, FeeEstimator};
+use chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
use chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateStep, ChannelMonitorUpdateErr, HTLC_FAIL_BACK_BUFFER, CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS, ANTI_REORG_DELAY, MonitorEvent, CLOSED_CHANNEL_UPDATE_ID};
use chain::transaction::{OutPoint, TransactionData};
// Since this struct is returned in `list_channels` methods, expose it here in case users want to
#[cfg(any(test, feature = "allow_wallclock_use"))]
use std::time::Instant;
use core::ops::Deref;
-use bitcoin::hashes::hex::ToHex;
// We hold various information about HTLC relay in the HTLC objects in Channel itself:
//
fn from_chan_no_close(err: ChannelError, channel_id: [u8; 32]) -> Self {
Self {
err: match err {
+ ChannelError::Warn(msg) => LightningError {
+ err: msg,
+ action: msgs::ErrorAction::IgnoreError,
+ },
ChannelError::Ignore(msg) => LightningError {
err: msg,
action: msgs::ErrorAction::IgnoreError,
/// Because adding or removing an entry is rare, we usually take an outer read lock and then
/// operate on the inner value freely. Sadly, this prevents parallel operation when opening a
/// new channel.
+ ///
+ /// If also holding `channel_state` lock, must lock `channel_state` prior to `per_peer_state`.
per_peer_state: RwLock<HashMap<PublicKey, Mutex<PeerState>>>,
pending_events: Mutex<Vec<events::Event>>,
macro_rules! convert_chan_err {
($self: ident, $err: expr, $short_to_id: expr, $channel: expr, $channel_id: expr) => {
match $err {
+ ChannelError::Warn(msg) => {
+ //TODO: Once warning messages are merged, we should send a `warning` message to our
+ //peer here.
+ (false, MsgHandleErrInternal::from_chan_no_close(ChannelError::Ignore(msg), $channel_id.clone()))
+ },
ChannelError::Ignore(msg) => {
(false, MsgHandleErrInternal::from_chan_no_close(ChannelError::Ignore(msg), $channel_id.clone()))
},
}
}
+macro_rules! remove_channel {
+ ($channel_state: expr, $entry: expr) => {
+ {
+ let channel = $entry.remove_entry().1;
+ if let Some(short_id) = channel.get_short_channel_id() {
+ $channel_state.short_to_id.remove(&short_id);
+ }
+ channel
+ }
+ }
+}
+
macro_rules! handle_monitor_err {
($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr) => {
handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment, Vec::new(), Vec::new())
return Err(APIError::APIMisuseError { err: format!("Channel value must be at least 1000 satoshis. It was {}", channel_value_satoshis) });
}
- let config = if override_config.is_some() { override_config.as_ref().unwrap() } else { &self.default_configuration };
- let channel = Channel::new_outbound(&self.fee_estimator, &self.keys_manager, their_network_key, channel_value_satoshis, push_msat, user_id, config)?;
+ let channel = {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ match per_peer_state.get(&their_network_key) {
+ Some(peer_state) => {
+ let peer_state = peer_state.lock().unwrap();
+ let their_features = &peer_state.latest_features;
+ let config = if override_config.is_some() { override_config.as_ref().unwrap() } else { &self.default_configuration };
+ Channel::new_outbound(&self.fee_estimator, &self.keys_manager, their_network_key, their_features, channel_value_satoshis, push_msat, user_id, config)?
+ },
+ None => return Err(APIError::ChannelUnavailable { err: format!("Not connected to node: {}", their_network_key) }),
+ }
+ };
let res = channel.get_open_channel(self.genesis_hash.clone());
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
pub fn close_channel(&self, channel_id: &[u8; 32]) -> Result<(), APIError> {
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
- let (mut failed_htlcs, chan_option) = {
+ let counterparty_node_id;
+ let mut failed_htlcs: Vec<(HTLCSource, PaymentHash)>;
+ let result: Result<(), _> = loop {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
match channel_state.by_id.entry(channel_id.clone()) {
hash_map::Entry::Occupied(mut chan_entry) => {
- let (shutdown_msg, failed_htlcs) = chan_entry.get_mut().get_shutdown()?;
+ counterparty_node_id = chan_entry.get().get_counterparty_node_id();
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ let (shutdown_msg, monitor_update, htlcs) = match per_peer_state.get(&counterparty_node_id) {
+ Some(peer_state) => {
+ let peer_state = peer_state.lock().unwrap();
+ let their_features = &peer_state.latest_features;
+ chan_entry.get_mut().get_shutdown(&self.keys_manager, their_features)?
+ },
+ None => return Err(APIError::ChannelUnavailable { err: format!("Not connected to node: {}", counterparty_node_id) }),
+ };
+ failed_htlcs = htlcs;
+
+ // Update the monitor with the shutdown script if necessary.
+ if let Some(monitor_update) = monitor_update {
+ if let Err(e) = self.chain_monitor.update_channel(chan_entry.get().get_funding_txo().unwrap(), monitor_update) {
+ let (result, is_permanent) =
+ handle_monitor_err!(self, e, channel_state.short_to_id, chan_entry.get_mut(), RAACommitmentOrder::CommitmentFirst, false, false, Vec::new(), Vec::new(), chan_entry.key());
+ if is_permanent {
+ remove_channel!(channel_state, chan_entry);
+ break result;
+ }
+ }
+ }
+
channel_state.pending_msg_events.push(events::MessageSendEvent::SendShutdown {
- node_id: chan_entry.get().get_counterparty_node_id(),
+ node_id: counterparty_node_id,
msg: shutdown_msg
});
+
if chan_entry.get().is_shutdown() {
- if let Some(short_id) = chan_entry.get().get_short_channel_id() {
- channel_state.short_to_id.remove(&short_id);
+ let channel = remove_channel!(channel_state, chan_entry);
+ if let Ok(channel_update) = self.get_channel_update_for_broadcast(&channel) {
+ channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
+ msg: channel_update
+ });
}
- (failed_htlcs, Some(chan_entry.remove_entry().1))
- } else { (failed_htlcs, None) }
+ }
+ break Ok(());
},
hash_map::Entry::Vacant(_) => return Err(APIError::ChannelUnavailable{err: "No such channel".to_owned()})
}
};
+
for htlc_source in failed_htlcs.drain(..) {
self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source.0, &htlc_source.1, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() });
}
- let chan_update = if let Some(chan) = chan_option {
- self.get_channel_update_for_broadcast(&chan).ok()
- } else { None };
-
- if let Some(update) = chan_update {
- let mut channel_state = self.channel_state.lock().unwrap();
- channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: update
- });
- }
+ let _ = handle_error!(self, result, counterparty_node_id);
Ok(())
}
// for now more than 10 paths likely carries too much one-path failure.
return Err(PaymentSendFailure::ParameterError(APIError::RouteError{err: "Sending over more than 10 paths is not currently supported"}));
}
+ if payment_secret.is_none() && route.paths.len() > 1 {
+ return Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError{err: "Payment secret is required for multi-path payments".to_string()}));
+ }
let mut total_value = 0;
let our_node_id = self.get_our_node_id();
let mut path_errs = Vec::with_capacity(route.paths.len());
/// would be able to guess -- otherwise, an intermediate node may claim the payment and it will
/// never reach the recipient.
///
+ /// See [`send_payment`] documentation for more details on the return value of this function.
+ ///
/// Similar to regular payments, you MUST NOT reuse a `payment_preimage` value. See
/// [`send_payment`] for more information about the risks of duplicate preimage usage.
///
+ /// Note that `route` must have exactly one path.
+ ///
/// [`send_payment`]: Self::send_payment
pub fn send_spontaneous_payment(&self, route: &Route, payment_preimage: Option<PaymentPreimage>) -> Result<PaymentHash, PaymentSendFailure> {
let preimage = match payment_preimage {
// close channel and then send error message to peer.
let counterparty_node_id = chan.get().get_counterparty_node_id();
let err: Result<(), _> = match e {
- ChannelError::Ignore(_) => {
+ ChannelError::Ignore(_) | ChannelError::Warn(_) => {
panic!("Stated return value requirements in send_commitment() were not met");
- },
+ }
ChannelError::Close(msg) => {
log_trace!(self.logger, "Closing channel {} due to Close-required error: {}", log_bytes!(chan.key()[..]), msg);
let (channel_id, mut channel) = chan.remove_entry();
self.process_background_events();
}
- /// If a peer is disconnected we mark any channels with that peer as 'disabled'.
- /// After some time, if channels are still disabled we need to broadcast a ChannelUpdate
- /// to inform the network about the uselessness of these channels.
+ fn update_channel_fee(&self, short_to_id: &mut HashMap<u64, [u8; 32]>, pending_msg_events: &mut Vec<events::MessageSendEvent>, chan_id: &[u8; 32], chan: &mut Channel<Signer>, new_feerate: u32) -> (bool, NotifyOption, Result<(), MsgHandleErrInternal>) {
+ if !chan.is_outbound() { return (true, NotifyOption::SkipPersist, Ok(())); }
+ // If the feerate has decreased by less than half, don't bother
+ if new_feerate <= chan.get_feerate() && new_feerate * 2 > chan.get_feerate() {
+ log_trace!(self.logger, "Channel {} does not qualify for a feerate change from {} to {}.",
+ log_bytes!(chan_id[..]), chan.get_feerate(), new_feerate);
+ return (true, NotifyOption::SkipPersist, Ok(()));
+ }
+ if !chan.is_live() {
+ log_trace!(self.logger, "Channel {} does not qualify for a feerate change from {} to {} as it cannot currently be updated (probably the peer is disconnected).",
+ log_bytes!(chan_id[..]), chan.get_feerate(), new_feerate);
+ return (true, NotifyOption::SkipPersist, Ok(()));
+ }
+ log_trace!(self.logger, "Channel {} qualifies for a feerate change from {} to {}.",
+ log_bytes!(chan_id[..]), chan.get_feerate(), new_feerate);
+
+ let mut retain_channel = true;
+ let res = match chan.send_update_fee_and_commit(new_feerate, &self.logger) {
+ Ok(res) => Ok(res),
+ Err(e) => {
+ let (drop, res) = convert_chan_err!(self, e, short_to_id, chan, chan_id);
+ if drop { retain_channel = false; }
+ Err(res)
+ }
+ };
+ let ret_err = match res {
+ Ok(Some((update_fee, commitment_signed, monitor_update))) => {
+ if let Err(e) = self.chain_monitor.update_channel(chan.get_funding_txo().unwrap(), monitor_update) {
+ let (res, drop) = handle_monitor_err!(self, e, short_to_id, chan, RAACommitmentOrder::CommitmentFirst, false, true, Vec::new(), Vec::new(), chan_id);
+ if drop { retain_channel = false; }
+ res
+ } else {
+ pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
+ node_id: chan.get_counterparty_node_id(),
+ updates: msgs::CommitmentUpdate {
+ update_add_htlcs: Vec::new(),
+ update_fulfill_htlcs: Vec::new(),
+ update_fail_htlcs: Vec::new(),
+ update_fail_malformed_htlcs: Vec::new(),
+ update_fee: Some(update_fee),
+ commitment_signed,
+ },
+ });
+ Ok(())
+ }
+ },
+ Ok(None) => Ok(()),
+ Err(e) => Err(e),
+ };
+ (retain_channel, NotifyOption::DoPersist, ret_err)
+ }
+
+ #[cfg(fuzzing)]
+ /// In chanmon_consistency we want to sometimes do the channel fee updates done in
+ /// timer_tick_occurred, but we can't generate the disabled channel updates as it considers
+ /// these a fuzz failure (as they usually indicate a channel force-close, which is exactly what
+ /// it wants to detect). Thus, we have a variant exposed here for its benefit.
+ pub fn maybe_update_chan_fees(&self) {
+ PersistenceNotifierGuard::optionally_notify(&self.total_consistency_lock, &self.persistence_notifier, || {
+ let mut should_persist = NotifyOption::SkipPersist;
+
+ let new_feerate = self.fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
+
+ let mut handle_errors = Vec::new();
+ {
+ let mut channel_state_lock = self.channel_state.lock().unwrap();
+ let channel_state = &mut *channel_state_lock;
+ let pending_msg_events = &mut channel_state.pending_msg_events;
+ let short_to_id = &mut channel_state.short_to_id;
+ channel_state.by_id.retain(|chan_id, chan| {
+ let (retain_channel, chan_needs_persist, err) = self.update_channel_fee(short_to_id, pending_msg_events, chan_id, chan, new_feerate);
+ if chan_needs_persist == NotifyOption::DoPersist { should_persist = NotifyOption::DoPersist; }
+ if err.is_err() {
+ handle_errors.push(err);
+ }
+ retain_channel
+ });
+ }
+
+ should_persist
+ });
+ }
+
+ /// Performs actions which should happen on startup and roughly once per minute thereafter.
///
- /// This method handles all the details, and must be called roughly once per minute.
+ /// This currently includes:
+ /// * Increasing or decreasing the on-chain feerate estimates for our outbound channels,
+ /// * Broadcasting `ChannelUpdate` messages if we've been disconnected from our peer for more
+ /// than a minute, informing the network that they should no longer attempt to route over
+ /// the channel.
///
- /// Note that in some rare cases this may generate a `chain::Watch::update_channel` call.
+ /// Note that this may cause reentrancy through `chain::Watch::update_channel` calls or feerate
+ /// estimate fetches.
pub fn timer_tick_occurred(&self) {
PersistenceNotifierGuard::optionally_notify(&self.total_consistency_lock, &self.persistence_notifier, || {
let mut should_persist = NotifyOption::SkipPersist;
if self.process_background_events() { should_persist = NotifyOption::DoPersist; }
- let mut channel_state_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_state_lock;
- for (_, chan) in channel_state.by_id.iter_mut() {
- match chan.channel_update_status() {
- ChannelUpdateStatus::Enabled if !chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::DisabledStaged),
- ChannelUpdateStatus::Disabled if chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::EnabledStaged),
- ChannelUpdateStatus::DisabledStaged if chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::Enabled),
- ChannelUpdateStatus::EnabledStaged if !chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::Disabled),
- ChannelUpdateStatus::DisabledStaged if !chan.is_live() => {
- if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
- channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: update
- });
- }
- should_persist = NotifyOption::DoPersist;
- chan.set_channel_update_status(ChannelUpdateStatus::Disabled);
- },
- ChannelUpdateStatus::EnabledStaged if chan.is_live() => {
- if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
- channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: update
- });
- }
- should_persist = NotifyOption::DoPersist;
- chan.set_channel_update_status(ChannelUpdateStatus::Enabled);
- },
- _ => {},
- }
+ let new_feerate = self.fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
+
+ let mut handle_errors = Vec::new();
+ {
+ let mut channel_state_lock = self.channel_state.lock().unwrap();
+ let channel_state = &mut *channel_state_lock;
+ let pending_msg_events = &mut channel_state.pending_msg_events;
+ let short_to_id = &mut channel_state.short_to_id;
+ channel_state.by_id.retain(|chan_id, chan| {
+ match chan.channel_update_status() {
+ ChannelUpdateStatus::Enabled if !chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::DisabledStaged),
+ ChannelUpdateStatus::Disabled if chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::EnabledStaged),
+ ChannelUpdateStatus::DisabledStaged if chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::Enabled),
+ ChannelUpdateStatus::EnabledStaged if !chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::Disabled),
+ ChannelUpdateStatus::DisabledStaged if !chan.is_live() => {
+ if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
+ pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
+ msg: update
+ });
+ }
+ should_persist = NotifyOption::DoPersist;
+ chan.set_channel_update_status(ChannelUpdateStatus::Disabled);
+ },
+ ChannelUpdateStatus::EnabledStaged if chan.is_live() => {
+ if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
+ pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
+ msg: update
+ });
+ }
+ should_persist = NotifyOption::DoPersist;
+ chan.set_channel_update_status(ChannelUpdateStatus::Enabled);
+ },
+ _ => {},
+ }
+
+ let counterparty_node_id = chan.get_counterparty_node_id();
+ let (retain_channel, chan_needs_persist, err) = self.update_channel_fee(short_to_id, pending_msg_events, chan_id, chan, new_feerate);
+ if chan_needs_persist == NotifyOption::DoPersist { should_persist = NotifyOption::DoPersist; }
+ if err.is_err() {
+ handle_errors.push((err, counterparty_node_id));
+ }
+ retain_channel
+ });
+ }
+
+ for (err, counterparty_node_id) in handle_errors.drain(..) {
+ let _ = handle_error!(self, err, counterparty_node_id);
}
should_persist
return Err(MsgHandleErrInternal::send_err_msg_no_close("Unknown genesis block hash".to_owned(), msg.temporary_channel_id.clone()));
}
- let channel = Channel::new_from_req(&self.fee_estimator, &self.keys_manager, counterparty_node_id.clone(), their_features, msg, 0, &self.default_configuration)
+ let channel = Channel::new_from_req(&self.fee_estimator, &self.keys_manager, counterparty_node_id.clone(), &their_features, msg, 0, &self.default_configuration)
.map_err(|e| MsgHandleErrInternal::from_chan_no_close(e, msg.temporary_channel_id))?;
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.temporary_channel_id));
}
- try_chan_entry!(self, chan.get_mut().accept_channel(&msg, &self.default_configuration, their_features), channel_state, chan);
+ try_chan_entry!(self, chan.get_mut().accept_channel(&msg, &self.default_configuration, &their_features), channel_state, chan);
(chan.get().get_value_satoshis(), chan.get().get_funding_redeemscript().to_v0_p2wsh(), chan.get().get_user_id())
},
hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.temporary_channel_id))
}
fn internal_shutdown(&self, counterparty_node_id: &PublicKey, their_features: &InitFeatures, msg: &msgs::Shutdown) -> Result<(), MsgHandleErrInternal> {
- let (mut dropped_htlcs, chan_option) = {
+ let mut dropped_htlcs: Vec<(HTLCSource, PaymentHash)>;
+ let result: Result<(), _> = loop {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
if chan_entry.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
- let (shutdown, closing_signed, dropped_htlcs) = try_chan_entry!(self, chan_entry.get_mut().shutdown(&self.fee_estimator, &their_features, &msg), channel_state, chan_entry);
+
+ if !chan_entry.get().received_shutdown() {
+ log_info!(self.logger, "Received a shutdown message from our couterparty for channel {}{}.",
+ log_bytes!(msg.channel_id),
+ if chan_entry.get().sent_shutdown() { " after we initiated shutdown" } else { "" });
+ }
+
+ let (shutdown, monitor_update, htlcs) = try_chan_entry!(self, chan_entry.get_mut().shutdown(&self.keys_manager, &their_features, &msg), channel_state, chan_entry);
+ dropped_htlcs = htlcs;
+
+ // Update the monitor with the shutdown script if necessary.
+ if let Some(monitor_update) = monitor_update {
+ if let Err(e) = self.chain_monitor.update_channel(chan_entry.get().get_funding_txo().unwrap(), monitor_update) {
+ let (result, is_permanent) =
+ handle_monitor_err!(self, e, channel_state.short_to_id, chan_entry.get_mut(), RAACommitmentOrder::CommitmentFirst, false, false, Vec::new(), Vec::new(), chan_entry.key());
+ if is_permanent {
+ remove_channel!(channel_state, chan_entry);
+ break result;
+ }
+ }
+ }
+
if let Some(msg) = shutdown {
channel_state.pending_msg_events.push(events::MessageSendEvent::SendShutdown {
- node_id: counterparty_node_id.clone(),
- msg,
- });
- }
- if let Some(msg) = closing_signed {
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendClosingSigned {
- node_id: counterparty_node_id.clone(),
+ node_id: *counterparty_node_id,
msg,
});
}
- if chan_entry.get().is_shutdown() {
- if let Some(short_id) = chan_entry.get().get_short_channel_id() {
- channel_state.short_to_id.remove(&short_id);
- }
- (dropped_htlcs, Some(chan_entry.remove_entry().1))
- } else { (dropped_htlcs, None) }
+
+ break Ok(());
},
hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
}
for htlc_source in dropped_htlcs.drain(..) {
self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source.0, &htlc_source.1, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() });
}
- if let Some(chan) = chan_option {
- if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
- let mut channel_state = self.channel_state.lock().unwrap();
- channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: update
- });
- }
- }
+
+ let _ = handle_error!(self, result, *counterparty_node_id);
Ok(())
}
if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
- let (revoke_and_ack, commitment_signed, closing_signed, monitor_update) =
- match chan.get_mut().commitment_signed(&msg, &self.fee_estimator, &self.logger) {
+ let (revoke_and_ack, commitment_signed, monitor_update) =
+ match chan.get_mut().commitment_signed(&msg, &self.logger) {
Err((None, e)) => try_chan_entry!(self, Err(e), channel_state, chan),
Err((Some(update), e)) => {
assert!(chan.get().is_awaiting_monitor_update());
};
if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
return_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::RevokeAndACKFirst, true, commitment_signed.is_some());
- //TODO: Rebroadcast closing_signed if present on monitor update restoration
}
channel_state.pending_msg_events.push(events::MessageSendEvent::SendRevokeAndACK {
node_id: counterparty_node_id.clone(),
},
});
}
- if let Some(msg) = closing_signed {
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendClosingSigned {
- node_id: counterparty_node_id.clone(),
- msg,
- });
- }
Ok(())
},
hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
break Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
let was_frozen_for_monitor = chan.get().is_awaiting_monitor_update();
- let (commitment_update, pending_forwards, pending_failures, closing_signed, monitor_update, htlcs_to_fail_in) =
- break_chan_entry!(self, chan.get_mut().revoke_and_ack(&msg, &self.fee_estimator, &self.logger), channel_state, chan);
+ let (commitment_update, pending_forwards, pending_failures, monitor_update, htlcs_to_fail_in) =
+ break_chan_entry!(self, chan.get_mut().revoke_and_ack(&msg, &self.logger), channel_state, chan);
htlcs_to_fail = htlcs_to_fail_in;
if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
if was_frozen_for_monitor {
- assert!(commitment_update.is_none() && closing_signed.is_none() && pending_forwards.is_empty() && pending_failures.is_empty());
+ assert!(commitment_update.is_none() && pending_forwards.is_empty() && pending_failures.is_empty());
break Err(MsgHandleErrInternal::ignore_no_close("Previous monitor update failure prevented responses to RAA".to_owned()));
} else {
if let Err(e) = handle_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::CommitmentFirst, false, commitment_update.is_some(), pending_forwards, pending_failures) {
updates,
});
}
- if let Some(msg) = closing_signed {
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendClosingSigned {
- node_id: counterparty_node_id.clone(),
- msg,
- });
- }
break Ok((pending_forwards, pending_failures, chan.get().get_short_channel_id().expect("RAA should only work on a short-id-available channel"), chan.get().get_funding_txo().unwrap()))
},
hash_map::Entry::Vacant(_) => break Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
Ok(())
}
- /// Begin Update fee process. Allowed only on an outbound channel.
- /// If successful, will generate a UpdateHTLCs event, so you should probably poll
- /// PeerManager::process_events afterwards.
- /// Note: This API is likely to change!
- /// (C-not exported) Cause its doc(hidden) anyway
- #[doc(hidden)]
- pub fn update_fee(&self, channel_id: [u8;32], feerate_per_kw: u32) -> Result<(), APIError> {
- let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
- let counterparty_node_id;
- let err: Result<(), _> = loop {
- let mut channel_state_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_state_lock;
-
- match channel_state.by_id.entry(channel_id) {
- hash_map::Entry::Vacant(_) => return Err(APIError::APIMisuseError{err: format!("Failed to find corresponding channel for id {}", channel_id.to_hex())}),
- hash_map::Entry::Occupied(mut chan) => {
- if !chan.get().is_outbound() {
- return Err(APIError::APIMisuseError{err: "update_fee cannot be sent for an inbound channel".to_owned()});
- }
- if chan.get().is_awaiting_monitor_update() {
- return Err(APIError::MonitorUpdateFailed);
- }
- if !chan.get().is_live() {
- return Err(APIError::ChannelUnavailable{err: "Channel is either not yet fully established or peer is currently disconnected".to_owned()});
- }
- counterparty_node_id = chan.get().get_counterparty_node_id();
- if let Some((update_fee, commitment_signed, monitor_update)) =
- break_chan_entry!(self, chan.get_mut().send_update_fee_and_commit(feerate_per_kw, &self.logger), channel_state, chan)
- {
- if let Err(_e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
- unimplemented!();
- }
- log_debug!(self.logger, "Updating fee resulted in a commitment_signed for channel {}", log_bytes!(chan.get().channel_id()));
- channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: chan.get().get_counterparty_node_id(),
- updates: msgs::CommitmentUpdate {
- update_add_htlcs: Vec::new(),
- update_fulfill_htlcs: Vec::new(),
- update_fail_htlcs: Vec::new(),
- update_fail_malformed_htlcs: Vec::new(),
- update_fee: Some(update_fee),
- commitment_signed,
- },
- });
- }
- },
- }
- return Ok(())
- };
-
- match handle_error!(self, err, counterparty_node_id) {
- Ok(_) => unreachable!(),
- Err(e) => { Err(APIError::APIMisuseError { err: e.err })}
- }
- }
-
/// Process pending events from the `chain::Watch`, returning whether any events were processed.
fn process_pending_monitor_events(&self) -> bool {
let mut failed_channels = Vec::new();
});
}
- let has_update = has_monitor_update || !failed_htlcs.is_empty();
+ let has_update = has_monitor_update || !failed_htlcs.is_empty() || !handle_errors.is_empty();
for (failures, channel_id) in failed_htlcs.drain(..) {
self.fail_holding_cell_htlcs(failures, channel_id);
}
has_update
}
+ /// Check whether any channels have finished removing all pending updates after a shutdown
+ /// exchange and can now send a closing_signed.
+ /// Returns whether any closing_signed messages were generated.
+ fn maybe_generate_initial_closing_signed(&self) -> bool {
+ let mut handle_errors: Vec<(PublicKey, Result<(), _>)> = Vec::new();
+ let mut has_update = false;
+ {
+ let mut channel_state_lock = self.channel_state.lock().unwrap();
+ let channel_state = &mut *channel_state_lock;
+ let by_id = &mut channel_state.by_id;
+ let short_to_id = &mut channel_state.short_to_id;
+ let pending_msg_events = &mut channel_state.pending_msg_events;
+
+ by_id.retain(|channel_id, chan| {
+ match chan.maybe_propose_closing_signed(&self.fee_estimator, &self.logger) {
+ Ok((msg_opt, tx_opt)) => {
+ if let Some(msg) = msg_opt {
+ has_update = true;
+ pending_msg_events.push(events::MessageSendEvent::SendClosingSigned {
+ node_id: chan.get_counterparty_node_id(), msg,
+ });
+ }
+ if let Some(tx) = tx_opt {
+ // We're done with this channel. We got a closing_signed and sent back
+ // a closing_signed with a closing transaction to broadcast.
+ if let Some(short_id) = chan.get_short_channel_id() {
+ short_to_id.remove(&short_id);
+ }
+
+ if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
+ pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
+ msg: update
+ });
+ }
+
+ log_info!(self.logger, "Broadcasting {}", log_tx!(tx));
+ self.tx_broadcaster.broadcast_transaction(&tx);
+ false
+ } else { true }
+ },
+ Err(e) => {
+ has_update = true;
+ let (close_channel, res) = convert_chan_err!(self, e, short_to_id, chan, channel_id);
+ handle_errors.push((chan.get_counterparty_node_id(), Err(res)));
+ !close_channel
+ }
+ }
+ });
+ }
+
+ for (counterparty_node_id, err) in handle_errors.drain(..) {
+ let _ = handle_error!(self, err, counterparty_node_id);
+ }
+
+ has_update
+ }
+
/// Handle a list of channel failures during a block_connected or block_disconnected call,
/// pushing the channel monitor update (if any) to the background events queue and removing the
/// Channel object.
if self.check_free_holding_cells() {
result = NotifyOption::DoPersist;
}
+ if self.maybe_generate_initial_closing_signed() {
+ result = NotifyOption::DoPersist;
+ }
let mut pending_events = Vec::new();
let mut channel_state = self.channel_state.lock().unwrap();
channel.get_cur_counterparty_commitment_transaction_number() > monitor.get_cur_counterparty_commitment_number() ||
channel.get_latest_monitor_update_id() < monitor.get_latest_update_id() {
// But if the channel is behind of the monitor, close the channel:
+ log_error!(args.logger, "A ChannelManager is stale compared to the current ChannelMonitor!");
+ log_error!(args.logger, " The channel will be force-closed and the latest commitment transaction from the ChannelMonitor broadcast.");
+ log_error!(args.logger, " The ChannelMonitor for channel {} is at update_id {} but the ChannelManager is at update_id {}.",
+ log_bytes!(channel.channel_id()), monitor.get_latest_update_id(), channel.get_latest_monitor_update_id());
let (_, mut new_failed_htlcs) = channel.force_shutdown(true);
failed_htlcs.append(&mut new_failed_htlcs);
monitor.broadcast_latest_holder_commitment_txn(&args.tx_broadcaster, &args.logger);
use bitcoin::hashes::sha256::Hash as Sha256;
use core::time::Duration;
use ln::{PaymentPreimage, PaymentHash, PaymentSecret};
+ use ln::channelmanager::PaymentSendFailure;
use ln::features::{InitFeatures, InvoiceFeatures};
use ln::functional_test_utils::*;
use ln::msgs;
use ln::msgs::ChannelMessageHandler;
use routing::router::{get_keysend_route, get_route};
+ use util::errors::APIError;
use util::events::{Event, MessageSendEvent, MessageSendEventsProvider};
use util::test_utils;
nodes[1].logger.assert_log_contains("lightning::ln::channelmanager".to_string(), "We don't support MPP keysend payments".to_string(), 1);
}
+
+ #[test]
+ fn test_multi_hop_missing_secret() {
+ let chanmon_cfgs = create_chanmon_cfgs(4);
+ let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
+ let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
+
+ let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
+ let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
+ let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
+ let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
+ let logger = test_utils::TestLogger::new();
+
+ // Marshall an MPP route.
+ let (_, payment_hash, _) = get_payment_preimage_hash!(&nodes[3]);
+ let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
+ let mut route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[3].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap();
+ let path = route.paths[0].clone();
+ route.paths.push(path);
+ route.paths[0][0].pubkey = nodes[1].node.get_our_node_id();
+ route.paths[0][0].short_channel_id = chan_1_id;
+ route.paths[0][1].short_channel_id = chan_3_id;
+ route.paths[1][0].pubkey = nodes[2].node.get_our_node_id();
+ route.paths[1][0].short_channel_id = chan_2_id;
+ route.paths[1][1].short_channel_id = chan_4_id;
+
+ match nodes[0].node.send_payment(&route, payment_hash, &None).unwrap_err() {
+ PaymentSendFailure::ParameterError(APIError::APIMisuseError { ref err }) => {
+ assert!(regex::Regex::new(r"Payment secret is required for multi-path payments").unwrap().is_match(err)) },
+ _ => panic!("unexpected error")
+ }
+ }
}
#[cfg(all(any(test, feature = "_test_utils"), feature = "unstable"))]
projects / rust-lightning / blobdiff