use crate::routing::router::{InFlightHtlcs, PaymentParameters, Route, RouteHop, RoutePath, RouteParameters};
use crate::ln::msgs;
use crate::ln::onion_utils;
+use crate::ln::onion_utils::HTLCFailReason;
use crate::ln::msgs::{ChannelMessageHandler, DecodeError, LightningError, MAX_VALUE_MSAT};
use crate::ln::wire::Encode;
use crate::chain::keysinterface::{Sign, KeysInterface, KeysManager, Recipient};
use crate::util::config::{UserConfig, ChannelConfig};
use crate::util::events::{Event, EventHandler, EventsProvider, MessageSendEvent, MessageSendEventsProvider, ClosureReason, HTLCDestination};
-use crate::util::{byte_utils, events};
+use crate::util::events;
use crate::util::wakers::{Future, Notifier};
use crate::util::scid_utils::fake_scid;
use crate::util::ser::{BigSize, FixedLengthReader, Readable, ReadableArgs, MaybeReadable, Writeable, Writer, VecWriter};
}
}
-#[derive(Clone)] // See Channel::revoke_and_ack for why, tl;dr: Rust bug
-pub(super) enum HTLCFailReason {
- LightningError {
- err: msgs::OnionErrorPacket,
- },
- Reason {
- failure_code: u16,
- data: Vec<u8>,
- }
-}
-
struct ReceiveError {
err_code: u16,
err_data: Vec<u8>,
channel_state: Mutex<ChannelHolder<<K::Target as KeysInterface>::Signer>>,
/// Storage for PaymentSecrets and any requirements on future inbound payments before we will
- /// expose them to users via a PaymentReceived event. HTLCs which do not meet the requirements
+ /// expose them to users via a PaymentClaimable event. HTLCs which do not meet the requirements
/// here are failed when we process them as pending-forwardable-HTLCs, and entries are removed
- /// after we generate a PaymentReceived upon receipt of all MPP parts or when they time out.
+ /// after we generate a PaymentClaimable upon receipt of all MPP parts or when they time out.
///
/// See `ChannelManager` struct-level documentation for lock order requirements.
pending_inbound_payments: Mutex<HashMap<PaymentHash, PendingInboundPayment>>,
};
for htlc_source in failed_htlcs.drain(..) {
+ let reason = HTLCFailReason::from_failure_code(0x4000 | 8);
let receiver = HTLCDestination::NextHopChannel { node_id: Some(*counterparty_node_id), channel_id: *channel_id };
- self.fail_htlc_backwards_internal(htlc_source.0, &htlc_source.1, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() }, receiver);
+ self.fail_htlc_backwards_internal(&htlc_source.0, &htlc_source.1, &reason, receiver);
}
let _ = handle_error!(self, result, *counterparty_node_id);
log_debug!(self.logger, "Finishing force-closure of channel with {} HTLCs to fail", failed_htlcs.len());
for htlc_source in failed_htlcs.drain(..) {
let (source, payment_hash, counterparty_node_id, channel_id) = htlc_source;
+ let reason = HTLCFailReason::from_failure_code(0x4000 | 8);
let receiver = HTLCDestination::NextHopChannel { node_id: Some(counterparty_node_id), channel_id };
- self.fail_htlc_backwards_internal(source, &payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() }, receiver);
+ self.fail_htlc_backwards_internal(&source, &payment_hash, &reason, receiver);
}
if let Some((funding_txo, monitor_update)) = monitor_update_option {
// There isn't anything we can do if we get an update failure - we're already
return Err(ReceiveError {
msg: "Upstream node set CLTV to the wrong value",
err_code: 18,
- err_data: byte_utils::be32_to_array(cltv_expiry).to_vec()
+ err_data: cltv_expiry.to_be_bytes().to_vec()
})
}
// final_expiry_too_soon
// Also, ensure that, in the case of an unknown preimage for the received payment hash, our
// payment logic has enough time to fail the HTLC backward before our onchain logic triggers a
// channel closure (see HTLC_FAIL_BACK_BUFFER rationale).
- if (hop_data.outgoing_cltv_value as u64) <= self.best_block.read().unwrap().height() as u64 + HTLC_FAIL_BACK_BUFFER as u64 + 1 {
+ let current_height: u32 = self.best_block.read().unwrap().height();
+ if (hop_data.outgoing_cltv_value as u64) <= current_height as u64 + HTLC_FAIL_BACK_BUFFER as u64 + 1 {
+ let mut err_data = Vec::with_capacity(12);
+ err_data.extend_from_slice(&amt_msat.to_be_bytes());
+ err_data.extend_from_slice(¤t_height.to_be_bytes());
return Err(ReceiveError {
- err_code: 17,
- err_data: Vec::new(),
+ err_code: 0x4000 | 15, err_data,
msg: "The final CLTV expiry is too soon to handle",
});
}
if hop_data.amt_to_forward > amt_msat {
return Err(ReceiveError {
err_code: 19,
- err_data: byte_utils::be64_to_array(amt_msat).to_vec(),
+ err_data: amt_msat.to_be_bytes().to_vec(),
msg: "Upstream node sent less than we were supposed to receive in payment",
});
}
return PendingHTLCStatus::Fail(HTLCFailureMsg::Relay(msgs::UpdateFailHTLC {
channel_id: msg.channel_id,
htlc_id: msg.htlc_id,
- reason: onion_utils::build_first_hop_failure_packet(&shared_secret, $err_code, $data),
+ reason: HTLCFailReason::reason($err_code, $data.to_vec())
+ .get_encrypted_failure_packet(&shared_secret, &None),
}));
}
}
// with a short_channel_id of 0. This is important as various things later assume
// short_channel_id is non-0 in any ::Forward.
if let &PendingHTLCRouting::Forward { ref short_channel_id, .. } = routing {
- if let Some((err, code, chan_update)) = loop {
+ if let Some((err, mut code, chan_update)) = loop {
let id_option = self.short_to_chan_info.read().unwrap().get(&short_channel_id).cloned();
let mut channel_state = self.channel_state.lock().unwrap();
let forwarding_id_opt = match id_option {
}
chan_update_opt
} else {
- if (msg.cltv_expiry as u64) < (*outgoing_cltv_value) as u64 + MIN_CLTV_EXPIRY_DELTA as u64 { // incorrect_cltv_expiry
+ if (msg.cltv_expiry as u64) < (*outgoing_cltv_value) as u64 + MIN_CLTV_EXPIRY_DELTA as u64 {
+ // We really should set `incorrect_cltv_expiry` here but as we're not
+ // forwarding over a real channel we can't generate a channel_update
+ // for it. Instead we just return a generic temporary_node_failure.
break Some((
"Forwarding node has tampered with the intended HTLC values or origin node has an obsolete cltv_expiry_delta",
- 0x1000 | 13, None,
+ 0x2000 | 2, None,
));
}
None
(chan_update.serialized_length() as u16 + 2).write(&mut res).expect("Writes cannot fail");
msgs::ChannelUpdate::TYPE.write(&mut res).expect("Writes cannot fail");
chan_update.write(&mut res).expect("Writes cannot fail");
+ } else if code & 0x1000 == 0x1000 {
+ // If we're trying to return an error that requires a `channel_update` but
+ // we're forwarding to a phantom or intercept "channel" (i.e. cannot
+ // generate an update), just use the generic "temporary_node_failure"
+ // instead.
+ code = 0x2000 | 2;
}
return_err!(err, code, &res.0[..]);
}
phantom_shared_secret: None,
});
- let failure_reason = HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: Vec::new() };
+ let failure_reason = HTLCFailReason::from_failure_code(0x4000 | 10);
let destination = HTLCDestination::UnknownNextHop { requested_forward_scid: short_channel_id };
- self.fail_htlc_backwards_internal(htlc_source, &payment.forward_info.payment_hash, failure_reason, destination);
+ self.fail_htlc_backwards_internal(&htlc_source, &payment.forward_info.payment_hash, &failure_reason, destination);
} else { unreachable!() } // Only `PendingHTLCRouting::Forward`s are intercepted
Ok(())
};
failed_forwards.push((htlc_source, payment_hash,
- HTLCFailReason::Reason { failure_code: $err_code, data: $err_data },
+ HTLCFailReason::reason($err_code, $err_data),
reason
));
continue;
}
let (failure_code, data) = self.get_htlc_temp_fail_err_and_data(0x1000|7, short_chan_id, chan.get());
failed_forwards.push((htlc_source, payment_hash,
- HTLCFailReason::Reason { failure_code, data },
+ HTLCFailReason::reason(failure_code, data),
HTLCDestination::NextHopChannel { node_id: Some(chan.get().get_counterparty_node_id()), channel_id: forward_chan_id }
));
continue;
macro_rules! fail_htlc {
($htlc: expr, $payment_hash: expr) => {
- let mut htlc_msat_height_data = byte_utils::be64_to_array($htlc.value).to_vec();
+ let mut htlc_msat_height_data = $htlc.value.to_be_bytes().to_vec();
htlc_msat_height_data.extend_from_slice(
- &byte_utils::be32_to_array(self.best_block.read().unwrap().height()),
+ &self.best_block.read().unwrap().height().to_be_bytes(),
);
failed_forwards.push((HTLCSource::PreviousHopData(HTLCPreviousHopData {
short_channel_id: $htlc.prev_hop.short_channel_id,
incoming_packet_shared_secret: $htlc.prev_hop.incoming_packet_shared_secret,
phantom_shared_secret,
}), payment_hash,
- HTLCFailReason::Reason { failure_code: 0x4000 | 15, data: htlc_msat_height_data },
+ HTLCFailReason::reason(0x4000 | 15, htlc_msat_height_data),
HTLCDestination::FailedPayment { payment_hash: $payment_hash },
));
}
macro_rules! check_total_value {
($payment_data: expr, $payment_preimage: expr) => {{
- let mut payment_received_generated = false;
+ let mut payment_claimable_generated = false;
let purpose = || {
events::PaymentPurpose::InvoicePayment {
payment_preimage: $payment_preimage,
} else if total_value == $payment_data.total_msat {
let prev_channel_id = prev_funding_outpoint.to_channel_id();
htlcs.push(claimable_htlc);
- new_events.push(events::Event::PaymentReceived {
+ new_events.push(events::Event::PaymentClaimable {
receiver_node_id: Some(receiver_node_id),
payment_hash,
purpose: purpose(),
via_channel_id: Some(prev_channel_id),
via_user_channel_id: Some(prev_user_channel_id),
});
- payment_received_generated = true;
+ payment_claimable_generated = true;
} else {
// Nothing to do - we haven't reached the total
// payment value yet, wait until we receive more
// MPP parts.
htlcs.push(claimable_htlc);
}
- payment_received_generated
+ payment_claimable_generated
}}
}
let purpose = events::PaymentPurpose::SpontaneousPayment(preimage);
e.insert((purpose.clone(), vec![claimable_htlc]));
let prev_channel_id = prev_funding_outpoint.to_channel_id();
- new_events.push(events::Event::PaymentReceived {
+ new_events.push(events::Event::PaymentClaimable {
receiver_node_id: Some(receiver_node_id),
payment_hash,
amount_msat: outgoing_amt_msat,
log_bytes!(payment_hash.0), payment_data.total_msat, inbound_payment.get().min_value_msat.unwrap());
fail_htlc!(claimable_htlc, payment_hash);
} else {
- let payment_received_generated = check_total_value!(payment_data, inbound_payment.get().payment_preimage);
- if payment_received_generated {
+ let payment_claimable_generated = check_total_value!(payment_data, inbound_payment.get().payment_preimage);
+ if payment_claimable_generated {
inbound_payment.remove_entry();
}
}
}
for (htlc_source, payment_hash, failure_reason, destination) in failed_forwards.drain(..) {
- self.fail_htlc_backwards_internal(htlc_source, &payment_hash, failure_reason, destination);
+ self.fail_htlc_backwards_internal(&htlc_source, &payment_hash, &failure_reason, destination);
}
self.forward_htlcs(&mut phantom_receives);
});
for htlc_source in timed_out_mpp_htlcs.drain(..) {
+ let source = HTLCSource::PreviousHopData(htlc_source.0.clone());
+ let reason = HTLCFailReason::from_failure_code(23);
let receiver = HTLCDestination::FailedPayment { payment_hash: htlc_source.1 };
- self.fail_htlc_backwards_internal(HTLCSource::PreviousHopData(htlc_source.0.clone()), &htlc_source.1, HTLCFailReason::Reason { failure_code: 23, data: Vec::new() }, receiver );
+ self.fail_htlc_backwards_internal(&source, &htlc_source.1, &reason, receiver);
}
for (err, counterparty_node_id) in handle_errors.drain(..) {
}
/// Indicates that the preimage for payment_hash is unknown or the received amount is incorrect
- /// after a PaymentReceived event, failing the HTLC back to its origin and freeing resources
+ /// after a PaymentClaimable event, failing the HTLC back to its origin and freeing resources
/// along the path (including in our own channel on which we received it).
///
/// Note that in some cases around unclean shutdown, it is possible the payment may have
/// already been claimed by you via [`ChannelManager::claim_funds`] prior to you seeing (a
- /// second copy of) the [`events::Event::PaymentReceived`] event. Alternatively, the payment
+ /// second copy of) the [`events::Event::PaymentClaimable`] event. Alternatively, the payment
/// may have already been failed automatically by LDK if it was nearing its expiration time.
///
/// While LDK will never claim a payment automatically on your behalf (i.e. without you calling
let removed_source = self.claimable_htlcs.lock().unwrap().remove(payment_hash);
if let Some((_, mut sources)) = removed_source {
for htlc in sources.drain(..) {
- let mut htlc_msat_height_data = byte_utils::be64_to_array(htlc.value).to_vec();
- htlc_msat_height_data.extend_from_slice(&byte_utils::be32_to_array(
- self.best_block.read().unwrap().height()));
- self.fail_htlc_backwards_internal(
- HTLCSource::PreviousHopData(htlc.prev_hop), payment_hash,
- HTLCFailReason::Reason { failure_code: 0x4000 | 15, data: htlc_msat_height_data },
- HTLCDestination::FailedPayment { payment_hash: *payment_hash });
+ let mut htlc_msat_height_data = htlc.value.to_be_bytes().to_vec();
+ htlc_msat_height_data.extend_from_slice(&self.best_block.read().unwrap().height().to_be_bytes());
+ let source = HTLCSource::PreviousHopData(htlc.prev_hop);
+ let reason = HTLCFailReason::reason(0x4000 | 15, htlc_msat_height_data);
+ let receiver = HTLCDestination::FailedPayment { payment_hash: *payment_hash };
+ self.fail_htlc_backwards_internal(&source, &payment_hash, &reason, receiver);
}
}
}
&self, mut htlcs_to_fail: Vec<(HTLCSource, PaymentHash)>, channel_id: [u8; 32],
counterparty_node_id: &PublicKey
) {
- for (htlc_src, payment_hash) in htlcs_to_fail.drain(..) {
- let (failure_code, onion_failure_data) =
- match self.channel_state.lock().unwrap().by_id.entry(channel_id) {
- hash_map::Entry::Occupied(chan_entry) => {
- self.get_htlc_inbound_temp_fail_err_and_data(0x1000|7, &chan_entry.get())
- },
- hash_map::Entry::Vacant(_) => (0x4000|10, Vec::new())
- };
+ let (failure_code, onion_failure_data) =
+ match self.channel_state.lock().unwrap().by_id.entry(channel_id) {
+ hash_map::Entry::Occupied(chan_entry) => {
+ self.get_htlc_inbound_temp_fail_err_and_data(0x1000|7, &chan_entry.get())
+ },
+ hash_map::Entry::Vacant(_) => (0x4000|10, Vec::new())
+ };
+ for (htlc_src, payment_hash) in htlcs_to_fail.drain(..) {
+ let reason = HTLCFailReason::reason(failure_code, onion_failure_data.clone());
let receiver = HTLCDestination::NextHopChannel { node_id: Some(counterparty_node_id.clone()), channel_id };
- self.fail_htlc_backwards_internal(htlc_src, &payment_hash, HTLCFailReason::Reason { failure_code, data: onion_failure_data }, receiver);
+ self.fail_htlc_backwards_internal(&htlc_src, &payment_hash, &reason, receiver);
}
}
/// Fails an HTLC backwards to the sender of it to us.
/// Note that we do not assume that channels corresponding to failed HTLCs are still available.
- fn fail_htlc_backwards_internal(&self, source: HTLCSource, payment_hash: &PaymentHash, onion_error: HTLCFailReason,destination: HTLCDestination) {
+ fn fail_htlc_backwards_internal(&self, source: &HTLCSource, payment_hash: &PaymentHash, onion_error: &HTLCFailReason, destination: HTLCDestination) {
#[cfg(debug_assertions)]
{
// Ensure that the `channel_state` lock is not held when calling this function.
// from block_connected which may run during initialization prior to the chain_monitor
// being fully configured. See the docs for `ChannelManagerReadArgs` for more.
match source {
- HTLCSource::OutboundRoute { ref path, session_priv, payment_id, ref payment_params, .. } => {
+ HTLCSource::OutboundRoute { ref path, ref session_priv, ref payment_id, ref payment_params, .. } => {
let mut session_priv_bytes = [0; 32];
session_priv_bytes.copy_from_slice(&session_priv[..]);
let mut outbounds = self.pending_outbound_payments.lock().unwrap();
let mut all_paths_failed = false;
let mut full_failure_ev = None;
- if let hash_map::Entry::Occupied(mut payment) = outbounds.entry(payment_id) {
+ if let hash_map::Entry::Occupied(mut payment) = outbounds.entry(*payment_id) {
if !payment.get_mut().remove(&session_priv_bytes, Some(&path)) {
log_trace!(self.logger, "Received duplicative fail for HTLC with payment_hash {}", log_bytes!(payment_hash.0));
return;
all_paths_failed = true;
if payment.get().abandoned() {
full_failure_ev = Some(events::Event::PaymentFailed {
- payment_id,
+ payment_id: *payment_id,
payment_hash: payment.get().payment_hash().expect("PendingOutboundPayments::RetriesExceeded always has a payment hash set"),
});
payment.remove();
} else { None };
log_trace!(self.logger, "Failing outbound payment HTLC with payment_hash {}", log_bytes!(payment_hash.0));
- let path_failure = match &onion_error {
- &HTLCFailReason::LightningError { ref err } => {
+ let path_failure = {
#[cfg(test)]
- let (network_update, short_channel_id, payment_retryable, onion_error_code, onion_error_data) = onion_utils::process_onion_failure(&self.secp_ctx, &self.logger, &source, err.data.clone());
+ let (network_update, short_channel_id, payment_retryable, onion_error_code, onion_error_data) = onion_error.decode_onion_failure(&self.secp_ctx, &self.logger, &source);
#[cfg(not(test))]
- let (network_update, short_channel_id, payment_retryable, _, _) = onion_utils::process_onion_failure(&self.secp_ctx, &self.logger, &source, err.data.clone());
+ let (network_update, short_channel_id, payment_retryable, _, _) = onion_error.decode_onion_failure(&self.secp_ctx, &self.logger, &source);
- if self.payment_is_probe(payment_hash, &payment_id) {
- if !payment_retryable {
- events::Event::ProbeSuccessful {
- payment_id,
- payment_hash: payment_hash.clone(),
- path: path.clone(),
- }
- } else {
- events::Event::ProbeFailed {
- payment_id,
- payment_hash: payment_hash.clone(),
- path: path.clone(),
- short_channel_id,
- }
- }
- } else {
- // TODO: If we decided to blame ourselves (or one of our channels) in
- // process_onion_failure we should close that channel as it implies our
- // next-hop is needlessly blaming us!
- if let Some(scid) = short_channel_id {
- retry.as_mut().map(|r| r.payment_params.previously_failed_channels.push(scid));
- }
- events::Event::PaymentPathFailed {
- payment_id: Some(payment_id),
- payment_hash: payment_hash.clone(),
- payment_failed_permanently: !payment_retryable,
- network_update,
- all_paths_failed,
- path: path.clone(),
- short_channel_id,
- retry,
- #[cfg(test)]
- error_code: onion_error_code,
- #[cfg(test)]
- error_data: onion_error_data
- }
- }
- },
- &HTLCFailReason::Reason {
-#[cfg(test)]
- ref failure_code,
-#[cfg(test)]
- ref data,
- .. } => {
- // we get a fail_malformed_htlc from the first hop
- // TODO: We'd like to generate a NetworkUpdate for temporary
- // failures here, but that would be insufficient as find_route
- // generally ignores its view of our own channels as we provide them via
- // ChannelDetails.
- // TODO: For non-temporary failures, we really should be closing the
- // channel here as we apparently can't relay through them anyway.
- let scid = path.first().unwrap().short_channel_id;
- retry.as_mut().map(|r| r.payment_params.previously_failed_channels.push(scid));
-
- if self.payment_is_probe(payment_hash, &payment_id) {
- events::Event::ProbeFailed {
- payment_id,
+ if self.payment_is_probe(payment_hash, &payment_id) {
+ if !payment_retryable {
+ events::Event::ProbeSuccessful {
+ payment_id: *payment_id,
payment_hash: payment_hash.clone(),
path: path.clone(),
- short_channel_id: Some(scid),
}
} else {
- events::Event::PaymentPathFailed {
- payment_id: Some(payment_id),
+ events::Event::ProbeFailed {
+ payment_id: *payment_id,
payment_hash: payment_hash.clone(),
- payment_failed_permanently: false,
- network_update: None,
- all_paths_failed,
path: path.clone(),
- short_channel_id: Some(scid),
- retry,
-#[cfg(test)]
- error_code: Some(*failure_code),
-#[cfg(test)]
- error_data: Some(data.clone()),
+ short_channel_id,
}
}
+ } else {
+ // TODO: If we decided to blame ourselves (or one of our channels) in
+ // process_onion_failure we should close that channel as it implies our
+ // next-hop is needlessly blaming us!
+ if let Some(scid) = short_channel_id {
+ retry.as_mut().map(|r| r.payment_params.previously_failed_channels.push(scid));
+ }
+ events::Event::PaymentPathFailed {
+ payment_id: Some(*payment_id),
+ payment_hash: payment_hash.clone(),
+ payment_failed_permanently: !payment_retryable,
+ network_update,
+ all_paths_failed,
+ path: path.clone(),
+ short_channel_id,
+ retry,
+ #[cfg(test)]
+ error_code: onion_error_code,
+ #[cfg(test)]
+ error_data: onion_error_data
+ }
}
};
let mut pending_events = self.pending_events.lock().unwrap();
pending_events.push(path_failure);
if let Some(ev) = full_failure_ev { pending_events.push(ev); }
},
- HTLCSource::PreviousHopData(HTLCPreviousHopData { short_channel_id, htlc_id, incoming_packet_shared_secret, phantom_shared_secret, outpoint }) => {
- let err_packet = match onion_error {
- HTLCFailReason::Reason { failure_code, data } => {
- log_trace!(self.logger, "Failing HTLC with payment_hash {} backwards from us with code {}", log_bytes!(payment_hash.0), failure_code);
- if let Some(phantom_ss) = phantom_shared_secret {
- let phantom_packet = onion_utils::build_failure_packet(&phantom_ss, failure_code, &data[..]).encode();
- let encrypted_phantom_packet = onion_utils::encrypt_failure_packet(&phantom_ss, &phantom_packet);
- onion_utils::encrypt_failure_packet(&incoming_packet_shared_secret, &encrypted_phantom_packet.data[..])
- } else {
- let packet = onion_utils::build_failure_packet(&incoming_packet_shared_secret, failure_code, &data[..]).encode();
- onion_utils::encrypt_failure_packet(&incoming_packet_shared_secret, &packet)
- }
- },
- HTLCFailReason::LightningError { err } => {
- log_trace!(self.logger, "Failing HTLC with payment_hash {} backwards with pre-built LightningError", log_bytes!(payment_hash.0));
- onion_utils::encrypt_failure_packet(&incoming_packet_shared_secret, &err.data)
- }
- };
+ HTLCSource::PreviousHopData(HTLCPreviousHopData { ref short_channel_id, ref htlc_id, ref incoming_packet_shared_secret, ref phantom_shared_secret, ref outpoint }) => {
+ log_trace!(self.logger, "Failing HTLC with payment_hash {} backwards from us with {:?}", log_bytes!(payment_hash.0), onion_error);
+ let err_packet = onion_error.get_encrypted_failure_packet(incoming_packet_shared_secret, phantom_shared_secret);
let mut forward_event = None;
let mut forward_htlcs = self.forward_htlcs.lock().unwrap();
if forward_htlcs.is_empty() {
forward_event = Some(Duration::from_millis(MIN_HTLC_RELAY_HOLDING_CELL_MILLIS));
}
- match forward_htlcs.entry(short_channel_id) {
+ match forward_htlcs.entry(*short_channel_id) {
hash_map::Entry::Occupied(mut entry) => {
- entry.get_mut().push(HTLCForwardInfo::FailHTLC { htlc_id, err_packet });
+ entry.get_mut().push(HTLCForwardInfo::FailHTLC { htlc_id: *htlc_id, err_packet });
},
hash_map::Entry::Vacant(entry) => {
- entry.insert(vec!(HTLCForwardInfo::FailHTLC { htlc_id, err_packet }));
+ entry.insert(vec!(HTLCForwardInfo::FailHTLC { htlc_id: *htlc_id, err_packet }));
}
}
mem::drop(forward_htlcs);
}
pending_events.push(events::Event::HTLCHandlingFailed {
prev_channel_id: outpoint.to_channel_id(),
- failed_next_destination: destination
+ failed_next_destination: destination,
});
},
}
}
- /// Provides a payment preimage in response to [`Event::PaymentReceived`], generating any
+ /// Provides a payment preimage in response to [`Event::PaymentClaimable`], generating any
/// [`MessageSendEvent`]s needed to claim the payment.
///
/// Note that calling this method does *not* guarantee that the payment has been claimed. You
/// provided to your [`EventHandler`] when [`process_pending_events`] is next called.
///
/// Note that if you did not set an `amount_msat` when calling [`create_inbound_payment`] or
- /// [`create_inbound_payment_for_hash`] you must check that the amount in the `PaymentReceived`
+ /// [`create_inbound_payment_for_hash`] you must check that the amount in the `PaymentClaimable`
/// event matches your expectation. If you fail to do so and call this method, you may provide
/// the sender "proof-of-payment" when they did not fulfill the full expected payment.
///
- /// [`Event::PaymentReceived`]: crate::util::events::Event::PaymentReceived
+ /// [`Event::PaymentClaimable`]: crate::util::events::Event::PaymentClaimable
/// [`Event::PaymentClaimed`]: crate::util::events::Event::PaymentClaimed
/// [`process_pending_events`]: EventsProvider::process_pending_events
/// [`create_inbound_payment`]: Self::create_inbound_payment
mem::drop(channel_state_lock);
if !valid_mpp {
for htlc in sources.drain(..) {
- let mut htlc_msat_height_data = byte_utils::be64_to_array(htlc.value).to_vec();
- htlc_msat_height_data.extend_from_slice(&byte_utils::be32_to_array(
- self.best_block.read().unwrap().height()));
- self.fail_htlc_backwards_internal(
- HTLCSource::PreviousHopData(htlc.prev_hop), &payment_hash,
- HTLCFailReason::Reason { failure_code: 0x4000|15, data: htlc_msat_height_data },
- HTLCDestination::FailedPayment { payment_hash } );
+ let mut htlc_msat_height_data = htlc.value.to_be_bytes().to_vec();
+ htlc_msat_height_data.extend_from_slice(&self.best_block.read().unwrap().height().to_be_bytes());
+ let source = HTLCSource::PreviousHopData(htlc.prev_hop);
+ let reason = HTLCFailReason::reason(0x4000 | 15, htlc_msat_height_data);
+ let receiver = HTLCDestination::FailedPayment { payment_hash };
+ self.fail_htlc_backwards_internal(&source, &payment_hash, &reason, receiver);
}
}
self.finalize_claims(finalized_claims);
for failure in pending_failures.drain(..) {
let receiver = HTLCDestination::NextHopChannel { node_id: Some(counterparty_node_id), channel_id: funding_txo.to_channel_id() };
- self.fail_htlc_backwards_internal(failure.0, &failure.1, failure.2, receiver);
+ self.fail_htlc_backwards_internal(&failure.0, &failure.1, &failure.2, receiver);
}
}
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().funding_created(msg, best_block, &self.logger), chan), chan.remove())
+ (try_chan_entry!(self, chan.get_mut().funding_created(msg, best_block, &self.keys_manager, &self.logger), chan), chan.remove())
},
hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.temporary_channel_id))
}
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 (monitor, funding_tx, channel_ready) = match chan.get_mut().funding_signed(&msg, best_block, &self.logger) {
+ let (monitor, funding_tx, channel_ready) = match chan.get_mut().funding_signed(&msg, best_block, &self.keys_manager, &self.logger) {
Ok(update) => update,
Err(e) => try_chan_entry!(self, Err(e), chan),
};
};
for htlc_source in dropped_htlcs.drain(..) {
let receiver = HTLCDestination::NextHopChannel { node_id: Some(counterparty_node_id.clone()), channel_id: msg.channel_id };
- self.fail_htlc_backwards_internal(htlc_source.0, &htlc_source.1, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() }, receiver);
+ let reason = HTLCFailReason::from_failure_code(0x4000 | 8);
+ self.fail_htlc_backwards_internal(&htlc_source.0, &htlc_source.1, &reason, receiver);
}
let _ = handle_error!(self, result, *counterparty_node_id);
PendingHTLCStatus::Forward(PendingHTLCInfo { ref incoming_shared_secret, .. }) => {
let reason = if (error_code & 0x1000) != 0 {
let (real_code, error_data) = self.get_htlc_inbound_temp_fail_err_and_data(error_code, chan);
- onion_utils::build_first_hop_failure_packet(incoming_shared_secret, real_code, &error_data)
+ HTLCFailReason::reason(real_code, error_data)
} else {
- onion_utils::build_first_hop_failure_packet(incoming_shared_secret, error_code, &[])
- };
+ HTLCFailReason::from_failure_code(error_code)
+ }.get_encrypted_failure_packet(incoming_shared_secret, &None);
let msg = msgs::UpdateFailHTLC {
channel_id: msg.channel_id,
htlc_id: msg.htlc_id,
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));
}
- try_chan_entry!(self, chan.get_mut().update_fail_htlc(&msg, HTLCFailReason::LightningError { err: msg.reason.clone() }), chan);
+ try_chan_entry!(self, chan.get_mut().update_fail_htlc(&msg, HTLCFailReason::from_msg(msg)), chan);
},
hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
}
let chan_err: ChannelError = ChannelError::Close("Got update_fail_malformed_htlc with BADONION not set".to_owned());
try_chan_entry!(self, Err(chan_err), chan);
}
- try_chan_entry!(self, chan.get_mut().update_fail_malformed_htlc(&msg, HTLCFailReason::Reason { failure_code: msg.failure_code, data: Vec::new() }), chan);
+ try_chan_entry!(self, chan.get_mut().update_fail_malformed_htlc(&msg, HTLCFailReason::reason(msg.failure_code, msg.sha256_of_onion.to_vec())), chan);
Ok(())
},
hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
});
failed_intercept_forwards.push((htlc_source, forward_info.payment_hash,
- HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: Vec::new() },
+ HTLCFailReason::from_failure_code(0x4000 | 10),
HTLCDestination::InvalidForward { requested_forward_scid: scid },
));
}
}
for (htlc_source, payment_hash, failure_reason, destination) in failed_intercept_forwards.drain(..) {
- self.fail_htlc_backwards_internal(htlc_source, &payment_hash, failure_reason, destination);
+ self.fail_htlc_backwards_internal(&htlc_source, &payment_hash, &failure_reason, destination);
}
if !new_intercept_events.is_empty() {
{
for failure in pending_failures.drain(..) {
let receiver = HTLCDestination::NextHopChannel { node_id: Some(*counterparty_node_id), channel_id: channel_outpoint.to_channel_id() };
- self.fail_htlc_backwards_internal(failure.0, &failure.1, failure.2, receiver);
+ self.fail_htlc_backwards_internal(&failure.0, &failure.1, &failure.2, receiver);
}
self.forward_htlcs(&mut [(short_channel_id, channel_outpoint, user_channel_id, pending_forwards)]);
self.finalize_claims(finalized_claim_htlcs);
} else {
log_trace!(self.logger, "Failing HTLC with hash {} from our monitor", log_bytes!(htlc_update.payment_hash.0));
let receiver = HTLCDestination::NextHopChannel { node_id: counterparty_node_id, channel_id: funding_outpoint.to_channel_id() };
- self.fail_htlc_backwards_internal(htlc_update.source, &htlc_update.payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() }, receiver);
+ let reason = HTLCFailReason::from_failure_code(0x4000 | 8);
+ self.fail_htlc_backwards_internal(&htlc_update.source, &htlc_update.payment_hash, &reason, receiver);
}
},
MonitorEvent::CommitmentTxConfirmed(funding_outpoint) |
/// This differs from [`create_inbound_payment_for_hash`] only in that it generates the
/// [`PaymentHash`] and [`PaymentPreimage`] for you.
///
- /// The [`PaymentPreimage`] will ultimately be returned to you in the [`PaymentReceived`], which
- /// will have the [`PaymentReceived::payment_preimage`] field filled in. That should then be
+ /// The [`PaymentPreimage`] will ultimately be returned to you in the [`PaymentClaimable`], which
+ /// will have the [`PaymentClaimable::payment_preimage`] field filled in. That should then be
/// passed directly to [`claim_funds`].
///
/// See [`create_inbound_payment_for_hash`] for detailed documentation on behavior and requirements.
/// Errors if `min_value_msat` is greater than total bitcoin supply.
///
/// [`claim_funds`]: Self::claim_funds
- /// [`PaymentReceived`]: events::Event::PaymentReceived
- /// [`PaymentReceived::payment_preimage`]: events::Event::PaymentReceived::payment_preimage
+ /// [`PaymentClaimable`]: events::Event::PaymentClaimable
+ /// [`PaymentClaimable::payment_preimage`]: events::Event::PaymentClaimable::payment_preimage
/// [`create_inbound_payment_for_hash`]: Self::create_inbound_payment_for_hash
pub fn create_inbound_payment(&self, min_value_msat: Option<u64>, invoice_expiry_delta_secs: u32) -> Result<(PaymentHash, PaymentSecret), ()> {
inbound_payment::create(&self.inbound_payment_key, min_value_msat, invoice_expiry_delta_secs, &self.keys_manager, self.highest_seen_timestamp.load(Ordering::Acquire) as u64)
/// Gets a [`PaymentSecret`] for a given [`PaymentHash`], for which the payment preimage is
/// stored external to LDK.
///
- /// A [`PaymentReceived`] event will only be generated if the [`PaymentSecret`] matches a
+ /// A [`PaymentClaimable`] event will only be generated if the [`PaymentSecret`] matches a
/// payment secret fetched via this method or [`create_inbound_payment`], and which is at least
/// the `min_value_msat` provided here, if one is provided.
///
///
/// `min_value_msat` should be set if the invoice being generated contains a value. Any payment
/// received for the returned [`PaymentHash`] will be required to be at least `min_value_msat`
- /// before a [`PaymentReceived`] event will be generated, ensuring that we do not provide the
+ /// before a [`PaymentClaimable`] event will be generated, ensuring that we do not provide the
/// sender "proof-of-payment" unless they have paid the required amount.
///
/// `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
///
/// Note that we use block header time to time-out pending inbound payments (with some margin
/// to compensate for the inaccuracy of block header timestamps). Thus, in practice we will
- /// accept a payment and generate a [`PaymentReceived`] event for some time after the expiry.
+ /// accept a payment and generate a [`PaymentClaimable`] event for some time after the expiry.
/// If you need exact expiry semantics, you should enforce them upon receipt of
- /// [`PaymentReceived`].
+ /// [`PaymentClaimable`].
///
/// Note that invoices generated for inbound payments should have their `min_final_cltv_expiry`
/// set to at least [`MIN_FINAL_CLTV_EXPIRY`].
/// Errors if `min_value_msat` is greater than total bitcoin supply.
///
/// [`create_inbound_payment`]: Self::create_inbound_payment
- /// [`PaymentReceived`]: events::Event::PaymentReceived
+ /// [`PaymentClaimable`]: events::Event::PaymentClaimable
pub fn create_inbound_payment_for_hash(&self, payment_hash: PaymentHash, min_value_msat: Option<u64>, invoice_expiry_delta_secs: u32) -> Result<PaymentSecret, ()> {
inbound_payment::create_from_hash(&self.inbound_payment_key, min_value_msat, payment_hash, invoice_expiry_delta_secs, self.highest_seen_timestamp.load(Ordering::Acquire) as u64)
}
let mut inflight_htlcs = InFlightHtlcs::new();
for chan in self.channel_state.lock().unwrap().by_id.values() {
- for htlc_source in chan.inflight_htlc_sources() {
+ for (htlc_source, _) in chan.inflight_htlc_sources() {
if let HTLCSource::OutboundRoute { path, .. } = htlc_source {
inflight_htlcs.process_path(path, self.get_our_node_id());
}
events.into_inner()
}
+ #[cfg(test)]
+ pub fn pop_pending_event(&self) -> Option<events::Event> {
+ let mut events = self.pending_events.lock().unwrap();
+ if events.is_empty() { None } else { Some(events.remove(0)) }
+ }
+
#[cfg(test)]
pub fn has_pending_payments(&self) -> bool {
!self.pending_outbound_payments.lock().unwrap().is_empty()
if let Ok((channel_ready_opt, mut timed_out_pending_htlcs, announcement_sigs)) = res {
for (source, payment_hash) in timed_out_pending_htlcs.drain(..) {
let (failure_code, data) = self.get_htlc_inbound_temp_fail_err_and_data(0x1000|14 /* expiry_too_soon */, &channel);
- timed_out_htlcs.push((source, payment_hash, HTLCFailReason::Reason {
- failure_code, data,
- }, HTLCDestination::NextHopChannel { node_id: Some(channel.get_counterparty_node_id()), channel_id: channel.channel_id() }));
+ timed_out_htlcs.push((source, payment_hash, HTLCFailReason::reason(failure_code, data),
+ HTLCDestination::NextHopChannel { node_id: Some(channel.get_counterparty_node_id()), channel_id: channel.channel_id() }));
}
if let Some(channel_ready) = channel_ready_opt {
send_channel_ready!(self, pending_msg_events, channel, channel_ready);
// number of blocks we generally consider it to take to do a commitment update,
// just give up on it and fail the HTLC.
if height >= htlc.cltv_expiry - HTLC_FAIL_BACK_BUFFER {
- let mut htlc_msat_height_data = byte_utils::be64_to_array(htlc.value).to_vec();
- htlc_msat_height_data.extend_from_slice(&byte_utils::be32_to_array(height));
- timed_out_htlcs.push((HTLCSource::PreviousHopData(htlc.prev_hop.clone()), payment_hash.clone(), HTLCFailReason::Reason {
- failure_code: 0x4000 | 15,
- data: htlc_msat_height_data
- }, HTLCDestination::FailedPayment { payment_hash: payment_hash.clone() }));
+ let mut htlc_msat_height_data = htlc.value.to_be_bytes().to_vec();
+ htlc_msat_height_data.extend_from_slice(&height.to_be_bytes());
+
+ timed_out_htlcs.push((HTLCSource::PreviousHopData(htlc.prev_hop.clone()), payment_hash.clone(),
+ HTLCFailReason::reason(0x4000 | 15, htlc_msat_height_data),
+ HTLCDestination::FailedPayment { payment_hash: payment_hash.clone() }));
false
} else { true }
});
_ => unreachable!(),
};
timed_out_htlcs.push((prev_hop_data, htlc.forward_info.payment_hash,
- HTLCFailReason::Reason { failure_code: 0x2000 | 2, data: Vec::new() },
+ HTLCFailReason::from_failure_code(0x2000 | 2),
HTLCDestination::InvalidForward { requested_forward_scid }));
log_trace!(self.logger, "Timing out intercepted HTLC with requested forward scid {}", requested_forward_scid);
false
self.handle_init_event_channel_failures(failed_channels);
for (source, payment_hash, reason, destination) in timed_out_htlcs.drain(..) {
- self.fail_htlc_backwards_internal(source, &payment_hash, reason, destination);
+ self.fail_htlc_backwards_internal(&source, &payment_hash, &reason, destination);
}
}
}
}
-impl_writeable_tlv_based_enum!(HTLCFailReason,
- (0, LightningError) => {
- (0, err, required),
- },
- (1, Reason) => {
- (0, failure_code, required),
- (2, data, vec_type),
- },
-;);
-
impl_writeable_tlv_based!(PendingAddHTLCInfo, {
(0, forward_info, required),
(1, prev_user_channel_id, (default_value, 0)),
user_channel_id: channel.get_user_id(),
reason: ClosureReason::OutdatedChannelManager
});
+ for (channel_htlc_source, payment_hash) in channel.inflight_htlc_sources() {
+ let mut found_htlc = false;
+ for (monitor_htlc_source, _) in monitor.get_all_current_outbound_htlcs() {
+ if *channel_htlc_source == monitor_htlc_source { found_htlc = true; break; }
+ }
+ if !found_htlc {
+ // If we have some HTLCs in the channel which are not present in the newer
+ // ChannelMonitor, they have been removed and should be failed back to
+ // ensure we don't forget them entirely. Note that if the missing HTLC(s)
+ // were actually claimed we'd have generated and ensured the previous-hop
+ // claim update ChannelMonitor updates were persisted prior to persising
+ // the ChannelMonitor update for the forward leg, so attempting to fail the
+ // backwards leg of the HTLC will simply be rejected.
+ log_info!(args.logger,
+ "Failing HTLC with hash {} as it is missing in the ChannelMonitor for channel {} but was present in the (stale) ChannelManager",
+ log_bytes!(channel.channel_id()), log_bytes!(payment_hash.0));
+ failed_htlcs.push((channel_htlc_source.clone(), *payment_hash, channel.get_counterparty_node_id(), channel.channel_id()));
+ }
+ }
} else {
log_info!(args.logger, "Successfully loaded channel {}", log_bytes!(channel.channel_id()));
if let Some(short_channel_id) = channel.get_short_channel_id() {
None => continue,
}
}
- if forward_htlcs_count > 0 {
- // If we have pending HTLCs to forward, assume we either dropped a
- // `PendingHTLCsForwardable` or the user received it but never processed it as they
- // shut down before the timer hit. Either way, set the time_forwardable to a small
- // constant as enough time has likely passed that we should simply handle the forwards
- // now, or at least after the user gets a chance to reconnect to our peers.
- pending_events_read.push(events::Event::PendingHTLCsForwardable {
- time_forwardable: Duration::from_secs(2),
- });
- }
let background_event_count: u64 = Readable::read(reader)?;
let mut pending_background_events_read: Vec<BackgroundEvent> = Vec::with_capacity(cmp::min(background_event_count as usize, MAX_ALLOC_SIZE/mem::size_of::<BackgroundEvent>()));
}
}
}
+ for (htlc_source, htlc) in monitor.get_all_current_outbound_htlcs() {
+ if let HTLCSource::PreviousHopData(prev_hop_data) = htlc_source {
+ // The ChannelMonitor is now responsible for this HTLC's
+ // failure/success and will let us know what its outcome is. If we
+ // still have an entry for this HTLC in `forward_htlcs`, we were
+ // apparently not persisted after the monitor was when forwarding
+ // the payment.
+ forward_htlcs.retain(|_, forwards| {
+ forwards.retain(|forward| {
+ if let HTLCForwardInfo::AddHTLC(htlc_info) = forward {
+ if htlc_info.prev_short_channel_id == prev_hop_data.short_channel_id &&
+ htlc_info.prev_htlc_id == prev_hop_data.htlc_id
+ {
+ log_info!(args.logger, "Removing pending to-forward HTLC with hash {} as it was forwarded to the closed channel {}",
+ log_bytes!(htlc.payment_hash.0), log_bytes!(monitor.get_funding_txo().0.to_channel_id()));
+ false
+ } else { true }
+ } else { true }
+ });
+ !forwards.is_empty()
+ })
+ }
+ }
}
}
}
+ if !forward_htlcs.is_empty() {
+ // If we have pending HTLCs to forward, assume we either dropped a
+ // `PendingHTLCsForwardable` or the user received it but never processed it as they
+ // shut down before the timer hit. Either way, set the time_forwardable to a small
+ // constant as enough time has likely passed that we should simply handle the forwards
+ // now, or at least after the user gets a chance to reconnect to our peers.
+ pending_events_read.push(events::Event::PendingHTLCsForwardable {
+ time_forwardable: Duration::from_secs(2),
+ });
+ }
+
let inbound_pmt_key_material = args.keys_manager.get_inbound_payment_key_material();
let expanded_inbound_key = inbound_payment::ExpandedKey::new(&inbound_pmt_key_material);
for htlc_source in failed_htlcs.drain(..) {
let (source, payment_hash, counterparty_node_id, channel_id) = htlc_source;
let receiver = HTLCDestination::NextHopChannel { node_id: Some(counterparty_node_id), channel_id };
- channel_manager.fail_htlc_backwards_internal(source, &payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() }, receiver);
+ let reason = HTLCFailReason::from_failure_code(0x4000 | 8);
+ channel_manager.fail_htlc_backwards_internal(&source, &payment_hash, &reason, receiver);
}
//TODO: Broadcast channel update for closed channels, but only after we've made a
$node_b.handle_revoke_and_ack(&$node_a.get_our_node_id(), &get_event_msg!(NodeHolder { node: &$node_a }, MessageSendEvent::SendRevokeAndACK, $node_b.get_our_node_id()));
expect_pending_htlcs_forwardable!(NodeHolder { node: &$node_b });
- expect_payment_received!(NodeHolder { node: &$node_b }, payment_hash, payment_secret, 10_000);
+ expect_payment_claimable!(NodeHolder { node: &$node_b }, payment_hash, payment_secret, 10_000);
$node_b.claim_funds(payment_preimage);
expect_payment_claimed!(NodeHolder { node: &$node_b }, payment_hash, 10_000);
projects / rust-lightning / blobdiff