X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=src%2Fln%2Fchannelmanager.rs;h=dff6cb19e953ecd6abf93d64c9116b2ebefb2ea3;hb=e9f9cda986a37a6d7d84f9f5856d06b477a2374f;hp=3803e2c69e1da9a5cc71cc0b801cca320fd8c267;hpb=8b1a7ede279be51744d6fe91af2c8cdd03175f6d;p=rust-lightning diff --git a/src/ln/channelmanager.rs b/src/ln/channelmanager.rs index 3803e2c6..dff6cb19 100644 --- a/src/ln/channelmanager.rs +++ b/src/ln/channelmanager.rs @@ -32,29 +32,57 @@ use std::collections::hash_map; use std::{ptr, mem}; use std::time::{Instant,Duration}; -/// Stores the info we will need to send when we want to forward an HTLC onwards -pub struct PendingForwardHTLCInfo { - onion_packet: Option, - payment_hash: [u8; 32], - short_channel_id: u64, - prev_short_channel_id: u64, - amt_to_forward: u64, - outgoing_cltv_value: u32, -} +mod channel_held_info { + use ln::msgs; -#[cfg(feature = "fuzztarget")] -impl PendingForwardHTLCInfo { - pub fn dummy() -> Self { - Self { - onion_packet: None, - payment_hash: [0; 32], - short_channel_id: 0, - prev_short_channel_id: 0, - amt_to_forward: 0, - outgoing_cltv_value: 0, + /// Stores the info we will need to send when we want to forward an HTLC onwards + pub struct PendingForwardHTLCInfo { + pub(super) onion_packet: Option, + pub(super) payment_hash: [u8; 32], + pub(super) short_channel_id: u64, + pub(super) prev_short_channel_id: u64, + pub(super) amt_to_forward: u64, + pub(super) outgoing_cltv_value: u32, + } + + #[cfg(feature = "fuzztarget")] + impl PendingForwardHTLCInfo { + pub fn dummy() -> Self { + Self { + onion_packet: None, + payment_hash: [0; 32], + short_channel_id: 0, + prev_short_channel_id: 0, + amt_to_forward: 0, + outgoing_cltv_value: 0, + } + } + } + + #[derive(Clone)] // See Channel::revoke_and_ack for why, tl;dr: Rust bug + pub enum HTLCFailReason { + ErrorPacket { + err: msgs::OnionErrorPacket, + }, + Reason { + failure_code: u16, + data: Vec, + } + } + + #[cfg(feature = "fuzztarget")] + impl HTLCFailReason { + pub fn dummy() -> Self { + HTLCFailReason::Reason { + failure_code: 0, data: Vec::new(), + } } } } +#[cfg(feature = "fuzztarget")] +pub use self::channel_held_info::*; +#[cfg(not(feature = "fuzztarget"))] +pub(crate) use self::channel_held_info::*; enum PendingOutboundHTLC { IntermediaryHopData { @@ -72,16 +100,6 @@ enum PendingOutboundHTLC { } } -enum HTLCFailReason<'a> { - ErrorPacket { - err: &'a msgs::OnionErrorPacket, - }, - Reason { - failure_code: u16, - data: &'a[u8], - } -} - /// We hold back HTLCs we intend to relay for a random interval in the range (this, 5*this). This /// provides some limited amount of privacy. Ideally this would range from somewhere like 1 second /// to 30 seconds, but people expect lightning to be, you know, kinda fast, sadly. We could @@ -257,7 +275,7 @@ impl ChannelManager { }; for payment_hash in res.1 { // unknown_next_peer...I dunno who that is anymore.... - self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: &[0; 0] }); + self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: Vec::new() }); } Ok(res.0) } @@ -706,8 +724,8 @@ impl ChannelManager { for failed_forward in failed_forwards.drain(..) { match failed_forward.2 { - None => self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &failed_forward.0, HTLCFailReason::Reason { failure_code: failed_forward.1, data: &[0;0] }), - Some(chan_update) => self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &failed_forward.0, HTLCFailReason::Reason { failure_code: failed_forward.1, data: &chan_update.encode()[..] }), + None => self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &failed_forward.0, HTLCFailReason::Reason { failure_code: failed_forward.1, data: Vec::new() }), + Some(chan_update) => self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &failed_forward.0, HTLCFailReason::Reason { failure_code: failed_forward.1, data: chan_update.encode() }), }; } @@ -722,7 +740,7 @@ impl ChannelManager { /// Indicates that the preimage for payment_hash is unknown after a PaymentReceived event. pub fn fail_htlc_backwards(&self, payment_hash: &[u8; 32]) -> bool { - self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 15, data: &[0;0] }) + self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 15, data: Vec::new() }) } fn fail_htlc_backwards_internal(&self, mut channel_state: MutexGuard, payment_hash: &[u8; 32], onion_error: HTLCFailReason) -> bool { @@ -754,7 +772,7 @@ impl ChannelManager { PendingOutboundHTLC::IntermediaryHopData { source_short_channel_id, incoming_packet_shared_secret } => { let err_packet = match onion_error { HTLCFailReason::Reason { failure_code, data } => { - let packet = ChannelManager::build_failure_packet(&incoming_packet_shared_secret, failure_code, data).encode(); + let packet = ChannelManager::build_failure_packet(&incoming_packet_shared_secret, failure_code, &data[..]).encode(); ChannelManager::encrypt_failure_packet(&incoming_packet_shared_secret, &packet) }, HTLCFailReason::ErrorPacket { err } => { @@ -762,14 +780,14 @@ impl ChannelManager { } }; - let (node_id, fail_msg) = { + let (node_id, fail_msgs) = { let chan_id = match channel_state.short_to_id.get(&source_short_channel_id) { Some(chan_id) => chan_id.clone(), None => return false }; let chan = channel_state.by_id.get_mut(&chan_id).unwrap(); - match chan.get_update_fail_htlc(payment_hash, err_packet) { + match chan.get_update_fail_htlc_and_commit(payment_hash, err_packet) { Ok(msg) => (chan.get_their_node_id(), msg), Err(_e) => { //TODO: Do something with e? @@ -778,12 +796,18 @@ impl ChannelManager { } }; - mem::drop(channel_state); - let mut pending_events = self.pending_events.lock().unwrap(); - pending_events.push(events::Event::SendFailHTLC { - node_id, - msg: fail_msg - }); + match fail_msgs { + Some(msgs) => { + mem::drop(channel_state); + let mut pending_events = self.pending_events.lock().unwrap(); + pending_events.push(events::Event::SendFailHTLC { + node_id, + msg: msgs.0, + commitment_msg: msgs.1, + }); + }, + None => {}, + } true }, @@ -793,6 +817,7 @@ impl ChannelManager { /// Provides a payment preimage in response to a PaymentReceived event, returning true and /// generating message events for the net layer to claim the payment, if possible. Thus, you /// should probably kick the net layer to go send messages if this returns true! + /// May panic if called except in response to a PaymentReceived event. pub fn claim_funds(&self, payment_preimage: [u8; 32]) -> bool { self.claim_funds_internal(payment_preimage, true) } @@ -838,14 +863,14 @@ impl ChannelManager { false }, PendingOutboundHTLC::IntermediaryHopData { source_short_channel_id, .. } => { - let (node_id, fulfill_msg, monitor) = { + let (node_id, fulfill_msgs, monitor) = { let chan_id = match channel_state.short_to_id.get(&source_short_channel_id) { Some(chan_id) => chan_id.clone(), None => return false }; let chan = channel_state.by_id.get_mut(&chan_id).unwrap(); - match chan.get_update_fulfill_htlc(payment_preimage) { + match chan.get_update_fulfill_htlc_and_commit(payment_preimage) { Ok(msg) => (chan.get_their_node_id(), msg, if from_user { Some(chan.channel_monitor()) } else { None }), Err(_e) => { //TODO: Do something with e? @@ -854,13 +879,17 @@ impl ChannelManager { } }; - { - mem::drop(channel_state); - let mut pending_events = self.pending_events.lock().unwrap(); - pending_events.push(events::Event::SendFulfillHTLC { - node_id: node_id, - msg: fulfill_msg - }); + mem::drop(channel_state); + match fulfill_msgs { + Some(msgs) => { + let mut pending_events = self.pending_events.lock().unwrap(); + pending_events.push(events::Event::SendFulfillHTLC { + node_id: node_id, + msg: msgs.0, + commitment_msg: msgs.1, + }); + }, + None => {}, } //TODO: It may not be possible to handle add_update_monitor fails gracefully, maybe @@ -1066,7 +1095,7 @@ impl ChannelMessageHandler for ChannelManager { }; for payment_hash in res.2 { // unknown_next_peer...I dunno who that is anymore.... - self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: &[0; 0] }); + self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: Vec::new() }); } Ok((res.0, res.1)) } @@ -1328,6 +1357,11 @@ impl ChannelMessageHandler for ChannelManager { } fn handle_update_fulfill_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) -> Result<(), HandleError> { + //TODO: Delay the claimed_funds relaying just like we do outbound relay! + // Claim funds first, cause we don't really care if the channel we received the message on + // is broken, we may have enough info to get our own money! + self.claim_funds_internal(msg.payment_preimage.clone(), false); + let monitor = { let mut channel_state = self.channel_state.lock().unwrap(); match channel_state.by_id.get_mut(&msg.channel_id) { @@ -1341,48 +1375,40 @@ impl ChannelMessageHandler for ChannelManager { None => return Err(HandleError{err: "Failed to find corresponding channel", msg: None}) } }; - //TODO: Delay the claimed_funds relaying just like we do outbound relay! - self.claim_funds_internal(msg.payment_preimage.clone(), false); self.monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor)?; Ok(()) } fn handle_update_fail_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) -> Result<(), HandleError> { let mut channel_state = self.channel_state.lock().unwrap(); - let payment_hash = match channel_state.by_id.get_mut(&msg.channel_id) { + match channel_state.by_id.get_mut(&msg.channel_id) { Some(chan) => { if chan.get_their_node_id() != *their_node_id { return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None}) } - chan.update_fail_htlc(&msg)? + chan.update_fail_htlc(&msg, HTLCFailReason::ErrorPacket { err: msg.reason.clone() }) }, None => return Err(HandleError{err: "Failed to find corresponding channel", msg: None}) - }; - self.fail_htlc_backwards_internal(channel_state, &payment_hash, HTLCFailReason::ErrorPacket { err: &msg.reason }); - Ok(()) + } } fn handle_update_fail_malformed_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) -> Result<(), HandleError> { let mut channel_state = self.channel_state.lock().unwrap(); - let payment_hash = match channel_state.by_id.get_mut(&msg.channel_id) { + match channel_state.by_id.get_mut(&msg.channel_id) { Some(chan) => { if chan.get_their_node_id() != *their_node_id { return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None}) } - chan.update_fail_malformed_htlc(&msg)? + chan.update_fail_malformed_htlc(&msg, HTLCFailReason::Reason { failure_code: msg.failure_code, data: Vec::new() }) }, None => return Err(HandleError{err: "Failed to find corresponding channel", msg: None}) - }; - self.fail_htlc_backwards_internal(channel_state, &payment_hash, HTLCFailReason::Reason { failure_code: msg.failure_code, data: &[0;0] }); - Ok(()) + } } - fn handle_commitment_signed(&self, their_node_id: &PublicKey, msg: &msgs::CommitmentSigned) -> Result { - let mut forward_event = None; + fn handle_commitment_signed(&self, their_node_id: &PublicKey, msg: &msgs::CommitmentSigned) -> Result<(msgs::RevokeAndACK, Option), HandleError> { let (res, monitor) = { let mut channel_state = self.channel_state.lock().unwrap(); - - let ((res, mut forwarding_infos), monitor) = match channel_state.by_id.get_mut(&msg.channel_id) { + match channel_state.by_id.get_mut(&msg.channel_id) { Some(chan) => { if chan.get_their_node_id() != *their_node_id { return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None}) @@ -1390,13 +1416,40 @@ impl ChannelMessageHandler for ChannelManager { (chan.commitment_signed(&msg)?, chan.channel_monitor()) }, None => return Err(HandleError{err: "Failed to find corresponding channel", msg: None}) - }; + } + }; + //TODO: Only if we store HTLC sigs + self.monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor)?; + + Ok(res) + } + fn handle_revoke_and_ack(&self, their_node_id: &PublicKey, msg: &msgs::RevokeAndACK) -> Result, HandleError> { + let ((res, mut pending_forwards, mut pending_failures), monitor) = { + let mut channel_state = self.channel_state.lock().unwrap(); + match channel_state.by_id.get_mut(&msg.channel_id) { + Some(chan) => { + if chan.get_their_node_id() != *their_node_id { + return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None}) + } + (chan.revoke_and_ack(&msg)?, chan.channel_monitor()) + }, + None => return Err(HandleError{err: "Failed to find corresponding channel", msg: None}) + } + }; + self.monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor)?; + for failure in pending_failures.drain(..) { + self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &failure.0, failure.1); + } + + let mut forward_event = None; + if !pending_forwards.is_empty() { + let mut channel_state = self.channel_state.lock().unwrap(); if channel_state.forward_htlcs.is_empty() { forward_event = Some(Instant::now() + Duration::from_millis(((rng::rand_f32() * 4.0 + 1.0) * MIN_HTLC_RELAY_HOLDING_CELL_MILLIS as f32) as u64)); channel_state.next_forward = forward_event.unwrap(); } - for forward_info in forwarding_infos.drain(..) { + for forward_info in pending_forwards.drain(..) { match channel_state.forward_htlcs.entry(forward_info.short_channel_id) { hash_map::Entry::Occupied(mut entry) => { entry.get_mut().push(forward_info); @@ -1406,12 +1459,7 @@ impl ChannelMessageHandler for ChannelManager { } } } - - (res, monitor) - }; - //TODO: Only if we store HTLC sigs - self.monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor)?; - + } match forward_event { Some(time) => { let mut pending_events = self.pending_events.lock().unwrap(); @@ -1425,23 +1473,6 @@ impl ChannelMessageHandler for ChannelManager { Ok(res) } - fn handle_revoke_and_ack(&self, their_node_id: &PublicKey, msg: &msgs::RevokeAndACK) -> Result, msgs::CommitmentSigned)>, HandleError> { - let (res, monitor) = { - let mut channel_state = self.channel_state.lock().unwrap(); - match channel_state.by_id.get_mut(&msg.channel_id) { - Some(chan) => { - if chan.get_their_node_id() != *their_node_id { - return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None}) - } - (chan.revoke_and_ack(&msg)?, chan.channel_monitor()) - }, - None => return Err(HandleError{err: "Failed to find corresponding channel", msg: None}) - } - }; - self.monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor)?; - Ok(res) - } - fn handle_update_fee(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFee) -> Result<(), HandleError> { let mut channel_state = self.channel_state.lock().unwrap(); match channel_state.by_id.get_mut(&msg.channel_id) { @@ -1552,8 +1583,9 @@ mod tests { use rand::{thread_rng,Rng}; - use std::sync::{Arc, Mutex}; + use std::collections::HashMap; use std::default::Default; + use std::sync::{Arc, Mutex}; use std::time::Instant; fn build_test_onion_keys() -> Vec { @@ -1706,18 +1738,17 @@ mod tests { assert_eq!(onion_packet_5.data, hex_bytes("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").unwrap()); } - static mut CHAN_COUNT: u16 = 0; - fn confirm_transaction(chain: &chaininterface::ChainWatchInterfaceUtil, tx: &Transaction) { + fn confirm_transaction(chain: &chaininterface::ChainWatchInterfaceUtil, tx: &Transaction, chan_id: u32) { let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - let chan_id = unsafe { CHAN_COUNT }; - chain.block_connected_checked(&header, 1, &[tx; 1], &[chan_id as u32; 1]); + chain.block_connected_checked(&header, 1, &[tx; 1], &[chan_id; 1]); for i in 2..100 { header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; chain.block_connected_checked(&header, i, &[tx; 0], &[0; 0]); } } - fn create_chan_between_nodes(node_a: &ChannelManager, chain_a: &chaininterface::ChainWatchInterfaceUtil, monitor_a: &test_utils::TestChannelMonitor, node_b: &ChannelManager, chain_b: &chaininterface::ChainWatchInterfaceUtil, monitor_b: &test_utils::TestChannelMonitor) -> (msgs::ChannelAnnouncement, msgs::ChannelUpdate, msgs::ChannelUpdate, Uint256) { + static mut CHAN_COUNT: u32 = 0; + fn create_chan_between_nodes(node_a: &ChannelManager, chain_a: &chaininterface::ChainWatchInterfaceUtil, monitor_a: &test_utils::TestChannelMonitor, node_b: &ChannelManager, chain_b: &chaininterface::ChainWatchInterfaceUtil, monitor_b: &test_utils::TestChannelMonitor) -> (msgs::ChannelAnnouncement, msgs::ChannelUpdate, msgs::ChannelUpdate, Uint256, Transaction) { let open_chan = node_a.create_channel(node_b.get_our_node_id(), 100000, 42).unwrap(); let accept_chan = node_b.handle_open_channel(&node_a.get_our_node_id(), &open_chan).unwrap(); node_a.handle_accept_channel(&node_b.get_our_node_id(), &accept_chan).unwrap(); @@ -1774,7 +1805,7 @@ mod tests { _ => panic!("Unexpected event"), }; - confirm_transaction(&chain_a, &tx); + confirm_transaction(&chain_a, &tx, chan_id); let events_4 = node_a.get_and_clear_pending_events(); assert_eq!(events_4.len(), 1); match events_4[0] { @@ -1788,7 +1819,7 @@ mod tests { let channel_id; - confirm_transaction(&chain_b, &tx); + confirm_transaction(&chain_b, &tx, chan_id); let events_5 = node_b.get_and_clear_pending_events(); assert_eq!(events_5.len(), 1); let as_announcement_sigs = match events_5[0] { @@ -1826,10 +1857,10 @@ mod tests { CHAN_COUNT += 1; } - ((*announcement).clone(), (*as_update).clone(), (*bs_update).clone(), channel_id) + ((*announcement).clone(), (*as_update).clone(), (*bs_update).clone(), channel_id, tx) } - fn close_channel(outbound_node: &ChannelManager, outbound_broadcaster: &test_utils::TestBroadcaster, inbound_node: &ChannelManager, inbound_broadcaster: &test_utils::TestBroadcaster, channel_id: &Uint256, close_inbound_first: bool) { + fn close_channel(outbound_node: &ChannelManager, outbound_broadcaster: &test_utils::TestBroadcaster, inbound_node: &ChannelManager, inbound_broadcaster: &test_utils::TestBroadcaster, channel_id: &Uint256, funding_tx: Transaction, close_inbound_first: bool) { let (node_a, broadcaster_a) = if close_inbound_first { (inbound_node, inbound_broadcaster) } else { (outbound_node, outbound_broadcaster) }; let (node_b, broadcaster_b) = if close_inbound_first { (outbound_node, outbound_broadcaster) } else { (inbound_node, inbound_broadcaster) }; let (tx_a, tx_b); @@ -1862,6 +1893,9 @@ mod tests { tx_a = broadcaster_a.txn_broadcasted.lock().unwrap().remove(0); } assert_eq!(tx_a, tx_b); + let mut funding_tx_map = HashMap::new(); + funding_tx_map.insert(funding_tx.txid(), funding_tx); + tx_a.verify(&funding_tx_map).unwrap(); } struct SendEvent { @@ -1917,9 +1951,17 @@ mod tests { assert_eq!(added_monitors.len(), 1); added_monitors.clear(); } - assert!(prev_node.0.handle_revoke_and_ack(&node.get_our_node_id(), &revoke_and_ack).unwrap().is_none()); + assert!(prev_node.0.handle_revoke_and_ack(&node.get_our_node_id(), &revoke_and_ack.0).unwrap().is_none()); + let prev_revoke_and_ack = prev_node.0.handle_commitment_signed(&node.get_our_node_id(), &revoke_and_ack.1.unwrap()).unwrap(); { let mut added_monitors = prev_node.1.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), 2); + added_monitors.clear(); + } + assert!(node.handle_revoke_and_ack(&prev_node.0.get_our_node_id(), &prev_revoke_and_ack.0).unwrap().is_none()); + assert!(prev_revoke_and_ack.1.is_none()); + { + let mut added_monitors = monitor.added_monitors.lock().unwrap(); assert_eq!(added_monitors.len(), 1); added_monitors.clear(); } @@ -1965,42 +2007,58 @@ mod tests { added_monitors.clear(); } - let mut expected_next_node = expected_route.last().unwrap().0.get_our_node_id(); - let mut prev_node = expected_route.last().unwrap().0; - let mut next_msg = None; - for &(node, monitor) in expected_route.iter().rev() { - assert_eq!(expected_next_node, node.get_our_node_id()); - match next_msg { - Some(msg) => { - node.handle_update_fulfill_htlc(&prev_node.get_our_node_id(), &msg).unwrap(); + let mut next_msgs: Option<(msgs::UpdateFulfillHTLC, msgs::CommitmentSigned)> = None; + macro_rules! update_fulfill_dance { + ($node: expr, $monitor: expr, $prev_node: expr, $prev_monitor: expr) => { + { + $node.handle_update_fulfill_htlc(&$prev_node.get_our_node_id(), &next_msgs.as_ref().unwrap().0).unwrap(); + let revoke_and_commit = $node.handle_commitment_signed(&$prev_node.get_our_node_id(), &next_msgs.as_ref().unwrap().1).unwrap(); { - let mut added_monitors = monitor.added_monitors.lock().unwrap(); + let mut added_monitors = $monitor.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), 2); + added_monitors.clear(); + } + assert!($prev_node.handle_revoke_and_ack(&$node.get_our_node_id(), &revoke_and_commit.0).unwrap().is_none()); + let revoke_and_ack = $prev_node.handle_commitment_signed(&$node.get_our_node_id(), &revoke_and_commit.1.unwrap()).unwrap(); + assert!(revoke_and_ack.1.is_none()); + { + let mut added_monitors = $prev_monitor.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), 2); + added_monitors.clear(); + } + assert!($node.handle_revoke_and_ack(&$prev_node.get_our_node_id(), &revoke_and_ack.0).unwrap().is_none()); + { + let mut added_monitors = $monitor.added_monitors.lock().unwrap(); assert_eq!(added_monitors.len(), 1); added_monitors.clear(); } - }, None => {} + } + } + } + + let mut expected_next_node = expected_route.last().unwrap().0.get_our_node_id(); + let mut prev_node = (expected_route.last().unwrap().0, expected_route.last().unwrap().1); + for &(node, monitor) in expected_route.iter().rev() { + assert_eq!(expected_next_node, node.get_our_node_id()); + if next_msgs.is_some() { + update_fulfill_dance!(node, monitor, prev_node.0, prev_node.1); } let events = node.get_and_clear_pending_events(); assert_eq!(events.len(), 1); match events[0] { - Event::SendFulfillHTLC { ref node_id, ref msg } => { + Event::SendFulfillHTLC { ref node_id, ref msg, ref commitment_msg } => { expected_next_node = node_id.clone(); - next_msg = Some(msg.clone()); + next_msgs = Some((msg.clone(), commitment_msg.clone())); }, _ => panic!("Unexpected event"), }; - prev_node = node; + prev_node = (node, monitor); } assert_eq!(expected_next_node, origin_node.get_our_node_id()); - origin_node.handle_update_fulfill_htlc(&expected_route.first().unwrap().0.get_our_node_id(), &next_msg.unwrap()).unwrap(); - { - let mut added_monitors = origin_monitor.added_monitors.lock().unwrap(); - assert_eq!(added_monitors.len(), 1); - added_monitors.clear(); - } + update_fulfill_dance!(origin_node, origin_monitor, expected_route.first().unwrap().0, expected_route.first().unwrap().1); let events = origin_node.get_and_clear_pending_events(); assert_eq!(events.len(), 1); @@ -2058,32 +2116,58 @@ mod tests { assert!(expected_route.last().unwrap().0.fail_htlc_backwards(&our_payment_hash)); + let mut next_msgs: Option<(msgs::UpdateFailHTLC, msgs::CommitmentSigned)> = None; + macro_rules! update_fail_dance { + ($node: expr, $monitor: expr, $prev_node: expr, $prev_monitor: expr) => { + { + $node.handle_update_fail_htlc(&$prev_node.get_our_node_id(), &next_msgs.as_ref().unwrap().0).unwrap(); + let revoke_and_commit = $node.handle_commitment_signed(&$prev_node.get_our_node_id(), &next_msgs.as_ref().unwrap().1).unwrap(); + { + let mut added_monitors = $monitor.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), 1); + added_monitors.clear(); + } + assert!($prev_node.handle_revoke_and_ack(&$node.get_our_node_id(), &revoke_and_commit.0).unwrap().is_none()); + let revoke_and_ack = $prev_node.handle_commitment_signed(&$node.get_our_node_id(), &revoke_and_commit.1.unwrap()).unwrap(); + assert!(revoke_and_ack.1.is_none()); + { + let mut added_monitors = $prev_monitor.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), 2); + added_monitors.clear(); + } + assert!($node.handle_revoke_and_ack(&$prev_node.get_our_node_id(), &revoke_and_ack.0).unwrap().is_none()); + { + let mut added_monitors = $monitor.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), 1); + added_monitors.clear(); + } + } + } + } + let mut expected_next_node = expected_route.last().unwrap().0.get_our_node_id(); - let mut prev_node = expected_route.last().unwrap().0; - let mut next_msg = None; - for &(node, _) in expected_route.iter().rev() { + let mut prev_node = (expected_route.last().unwrap().0, expected_route.last().unwrap().1); + for &(node, monitor) in expected_route.iter().rev() { assert_eq!(expected_next_node, node.get_our_node_id()); - match next_msg { - Some(msg) => { - node.handle_update_fail_htlc(&prev_node.get_our_node_id(), &msg).unwrap(); - }, None => {} + if next_msgs.is_some() { + update_fail_dance!(node, monitor, prev_node.0, prev_node.1); } let events = node.get_and_clear_pending_events(); assert_eq!(events.len(), 1); match events[0] { - Event::SendFailHTLC { ref node_id, ref msg } => { + Event::SendFailHTLC { ref node_id, ref msg, ref commitment_msg } => { expected_next_node = node_id.clone(); - next_msg = Some(msg.clone()); + next_msgs = Some((msg.clone(), commitment_msg.clone())); }, _ => panic!("Unexpected event"), }; - prev_node = node; + prev_node = (node, monitor); } assert_eq!(expected_next_node, origin_node.get_our_node_id()); - origin_node.handle_update_fail_htlc(&expected_route.first().unwrap().0.get_our_node_id(), &next_msg.unwrap()).unwrap(); + update_fail_dance!(origin_node, origin_monitor, expected_route.first().unwrap().0, expected_route.first().unwrap().1); let events = origin_node.get_and_clear_pending_events(); assert_eq!(events.len(), 1); @@ -2274,10 +2358,10 @@ mod tests { claim_payment(&node_1, &chan_monitor_1, &vec!((&*node_2, &*chan_monitor_2), (&*node_4, &*chan_monitor_4))[..], payment_preimage_5); // Close down the channels... - close_channel(&node_1, &tx_broadcaster_1, &node_2, &tx_broadcaster_2, &chan_announcement_1.3, true); - close_channel(&node_2, &tx_broadcaster_2, &node_3, &tx_broadcaster_3, &chan_announcement_2.3, false); - close_channel(&node_3, &tx_broadcaster_3, &node_4, &tx_broadcaster_4, &chan_announcement_3.3, true); - close_channel(&node_2, &tx_broadcaster_2, &node_4, &tx_broadcaster_4, &chan_announcement_4.3, false); + close_channel(&node_1, &tx_broadcaster_1, &node_2, &tx_broadcaster_2, &chan_announcement_1.3, chan_announcement_1.4, true); + close_channel(&node_2, &tx_broadcaster_2, &node_3, &tx_broadcaster_3, &chan_announcement_2.3, chan_announcement_2.4, false); + close_channel(&node_3, &tx_broadcaster_3, &node_4, &tx_broadcaster_4, &chan_announcement_3.3, chan_announcement_3.4, true); + close_channel(&node_2, &tx_broadcaster_2, &node_4, &tx_broadcaster_4, &chan_announcement_4.3, chan_announcement_4.4, false); // Check that we processed all pending events for node in vec!(&node_1, &node_2, &node_3, &node_4) {