From: Matt Corallo Date: Wed, 19 Dec 2018 22:14:15 +0000 (-0500) Subject: Move ChannelManager network tests into their own module X-Git-Tag: v0.0.12~252^2~1 X-Git-Url: http://git.bitcoin.ninja/?a=commitdiff_plain;h=2053edbe53d92f54295019101da7c9caed9866eb;p=rust-lightning Move ChannelManager network tests into their own module --- diff --git a/src/ln/channelmanager.rs b/src/ln/channelmanager.rs index 4d52e00ea..b5ee9b562 100644 --- a/src/ln/channelmanager.rs +++ b/src/ln/channelmanager.rs @@ -67,8 +67,8 @@ pub(super) struct PendingForwardHTLCInfo { incoming_shared_secret: [u8; 32], payment_hash: PaymentHash, short_channel_id: u64, - amt_to_forward: u64, - outgoing_cltv_value: u32, + pub(super) amt_to_forward: u64, + pub(super) outgoing_cltv_value: u32, } #[derive(Clone)] // See Channel::revoke_and_ack for why, tl;dr: Rust bug @@ -209,9 +209,12 @@ impl MsgHandleErrInternal { /// probably increase this significantly. const MIN_HTLC_RELAY_HOLDING_CELL_MILLIS: u32 = 50; -struct HTLCForwardInfo { +pub(super) struct HTLCForwardInfo { prev_short_channel_id: u64, prev_htlc_id: u64, + #[cfg(test)] + pub(super) forward_info: PendingForwardHTLCInfo, + #[cfg(not(test))] forward_info: PendingForwardHTLCInfo, } @@ -227,33 +230,34 @@ pub(super) enum RAACommitmentOrder { RevokeAndACKFirst, } -struct ChannelHolder { - by_id: HashMap<[u8; 32], Channel>, - short_to_id: HashMap, - next_forward: Instant, +// Note this is only exposed in cfg(test): +pub(super) struct ChannelHolder { + pub(super) by_id: HashMap<[u8; 32], Channel>, + pub(super) short_to_id: HashMap, + pub(super) next_forward: Instant, /// short channel id -> forward infos. Key of 0 means payments received /// Note that while this is held in the same mutex as the channels themselves, no consistency /// guarantees are made about there existing a channel with the short id here, nor the short /// ids in the PendingForwardHTLCInfo! - forward_htlcs: HashMap>, + pub(super) forward_htlcs: HashMap>, /// Note that while this is held in the same mutex as the channels themselves, no consistency /// guarantees are made about the channels given here actually existing anymore by the time you /// go to read them! - claimable_htlcs: HashMap>, + pub(super) claimable_htlcs: HashMap>, /// Messages to send to peers - pushed to in the same lock that they are generated in (except /// for broadcast messages, where ordering isn't as strict). - pending_msg_events: Vec, + pub(super) pending_msg_events: Vec, } -struct MutChannelHolder<'a> { - by_id: &'a mut HashMap<[u8; 32], Channel>, - short_to_id: &'a mut HashMap, - next_forward: &'a mut Instant, - forward_htlcs: &'a mut HashMap>, - claimable_htlcs: &'a mut HashMap>, - pending_msg_events: &'a mut Vec, +pub(super) struct MutChannelHolder<'a> { + pub(super) by_id: &'a mut HashMap<[u8; 32], Channel>, + pub(super) short_to_id: &'a mut HashMap, + pub(super) next_forward: &'a mut Instant, + pub(super) forward_htlcs: &'a mut HashMap>, + pub(super) claimable_htlcs: &'a mut HashMap>, + pub(super) pending_msg_events: &'a mut Vec, } impl ChannelHolder { - fn borrow_parts(&mut self) -> MutChannelHolder { + pub(super) fn borrow_parts(&mut self) -> MutChannelHolder { MutChannelHolder { by_id: &mut self.by_id, short_to_id: &mut self.short_to_id, @@ -300,10 +304,16 @@ pub struct ChannelManager { chain_monitor: Arc, tx_broadcaster: Arc, + #[cfg(test)] + pub(super) latest_block_height: AtomicUsize, + #[cfg(not(test))] latest_block_height: AtomicUsize, last_block_hash: Mutex, secp_ctx: Secp256k1, + #[cfg(test)] + pub(super) channel_state: Mutex, + #[cfg(not(test))] channel_state: Mutex, our_network_key: SecretKey, @@ -324,7 +334,7 @@ pub struct ChannelManager { /// the HTLC via a full update_fail_htlc/commitment_signed dance before we hit the /// CLTV_CLAIM_BUFFER point (we static assert that its at least 3 blocks more). const CLTV_EXPIRY_DELTA: u16 = 6 * 12; //TODO? -const CLTV_FAR_FAR_AWAY: u32 = 6 * 24 * 7; //TODO? +pub(super) const CLTV_FAR_FAR_AWAY: u32 = 6 * 24 * 7; //TODO? // Check that our CLTV_EXPIRY is at least CLTV_CLAIM_BUFFER + 2*HTLC_FAIL_TIMEOUT_BLOCKS + // HTLC_FAIL_ANTI_REORG_DELAY, ie that if the next-hop peer fails the HTLC within @@ -3077,6367 +3087,3 @@ impl<'a, R : ::std::io::Read> ReadableArgs> for (S Ok((last_block_hash.clone(), channel_manager)) } } - -#[cfg(test)] -mod tests { - use chain::chaininterface; - use chain::transaction::OutPoint; - use chain::chaininterface::{ChainListener, ChainWatchInterface}; - use chain::keysinterface::{KeysInterface, SpendableOutputDescriptor}; - use chain::keysinterface; - use ln::channel::{COMMITMENT_TX_BASE_WEIGHT, COMMITMENT_TX_WEIGHT_PER_HTLC}; - use ln::channelmanager::{ChannelManager,ChannelManagerReadArgs,RAACommitmentOrder, PaymentPreimage, PaymentHash}; - use ln::channelmonitor::{ChannelMonitor, ChannelMonitorUpdateErr, CLTV_CLAIM_BUFFER, HTLC_FAIL_TIMEOUT_BLOCKS, ManyChannelMonitor}; - use ln::channel::{ACCEPTED_HTLC_SCRIPT_WEIGHT, OFFERED_HTLC_SCRIPT_WEIGHT}; - use ln::onion_utils; - use ln::router::{Route, RouteHop, Router}; - use ln::msgs; - use ln::msgs::{ChannelMessageHandler,RoutingMessageHandler,HTLCFailChannelUpdate}; - use util::test_utils; - use util::events::{Event, EventsProvider, MessageSendEvent, MessageSendEventsProvider}; - use util::errors::APIError; - use util::logger::Logger; - use util::ser::{Writeable, Writer, ReadableArgs}; - use util::config::UserConfig; - - use bitcoin::util::hash::{BitcoinHash, Sha256dHash}; - use bitcoin::util::bip143; - use bitcoin::util::address::Address; - use bitcoin::util::bip32::{ChildNumber, ExtendedPubKey, ExtendedPrivKey}; - use bitcoin::blockdata::block::{Block, BlockHeader}; - use bitcoin::blockdata::transaction::{Transaction, TxOut, TxIn, SigHashType}; - use bitcoin::blockdata::script::{Builder, Script}; - use bitcoin::blockdata::opcodes; - use bitcoin::blockdata::constants::genesis_block; - use bitcoin::network::constants::Network; - - use bitcoin_hashes::sha256::Hash as Sha256; - use bitcoin_hashes::Hash; - - use secp256k1::{Secp256k1, Message}; - use secp256k1::key::{PublicKey,SecretKey}; - - use rand::{thread_rng,Rng}; - - use std::cell::RefCell; - use std::collections::{BTreeSet, HashMap, HashSet}; - use std::default::Default; - use std::rc::Rc; - use std::sync::{Arc, Mutex}; - use std::sync::atomic::Ordering; - use std::time::Instant; - use std::mem; - - fn confirm_transaction(chain: &chaininterface::ChainWatchInterfaceUtil, tx: &Transaction, chan_id: u32) { - assert!(chain.does_match_tx(tx)); - let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - 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]); - } - } - - struct Node { - chain_monitor: Arc, - tx_broadcaster: Arc, - chan_monitor: Arc, - keys_manager: Arc, - node: Arc, - router: Router, - node_seed: [u8; 32], - network_payment_count: Rc>, - network_chan_count: Rc>, - } - impl Drop for Node { - fn drop(&mut self) { - if !::std::thread::panicking() { - // Check that we processed all pending events - assert_eq!(self.node.get_and_clear_pending_msg_events().len(), 0); - assert_eq!(self.node.get_and_clear_pending_events().len(), 0); - assert_eq!(self.chan_monitor.added_monitors.lock().unwrap().len(), 0); - } - } - } - - fn create_chan_between_nodes(node_a: &Node, node_b: &Node) -> (msgs::ChannelAnnouncement, msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction) { - create_chan_between_nodes_with_value(node_a, node_b, 100000, 10001) - } - - fn create_chan_between_nodes_with_value(node_a: &Node, node_b: &Node, channel_value: u64, push_msat: u64) -> (msgs::ChannelAnnouncement, msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction) { - let (funding_locked, channel_id, tx) = create_chan_between_nodes_with_value_a(node_a, node_b, channel_value, push_msat); - let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(node_a, node_b, &funding_locked); - (announcement, as_update, bs_update, channel_id, tx) - } - - macro_rules! get_revoke_commit_msgs { - ($node: expr, $node_id: expr) => { - { - let events = $node.node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 2); - (match events[0] { - MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => { - assert_eq!(*node_id, $node_id); - (*msg).clone() - }, - _ => panic!("Unexpected event"), - }, match events[1] { - MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => { - assert_eq!(*node_id, $node_id); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fulfill_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - updates.commitment_signed.clone() - }, - _ => panic!("Unexpected event"), - }) - } - } - } - - macro_rules! get_event_msg { - ($node: expr, $event_type: path, $node_id: expr) => { - { - let events = $node.node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - $event_type { ref node_id, ref msg } => { - assert_eq!(*node_id, $node_id); - (*msg).clone() - }, - _ => panic!("Unexpected event"), - } - } - } - } - - macro_rules! get_htlc_update_msgs { - ($node: expr, $node_id: expr) => { - { - let events = $node.node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => { - assert_eq!(*node_id, $node_id); - (*updates).clone() - }, - _ => panic!("Unexpected event"), - } - } - } - } - - macro_rules! get_feerate { - ($node: expr, $channel_id: expr) => { - { - let chan_lock = $node.node.channel_state.lock().unwrap(); - let chan = chan_lock.by_id.get(&$channel_id).unwrap(); - chan.get_feerate() - } - } - } - - - fn create_chan_between_nodes_with_value_init(node_a: &Node, node_b: &Node, channel_value: u64, push_msat: u64) -> Transaction { - node_a.node.create_channel(node_b.node.get_our_node_id(), channel_value, push_msat, 42).unwrap(); - node_b.node.handle_open_channel(&node_a.node.get_our_node_id(), &get_event_msg!(node_a, MessageSendEvent::SendOpenChannel, node_b.node.get_our_node_id())).unwrap(); - node_a.node.handle_accept_channel(&node_b.node.get_our_node_id(), &get_event_msg!(node_b, MessageSendEvent::SendAcceptChannel, node_a.node.get_our_node_id())).unwrap(); - - let chan_id = *node_a.network_chan_count.borrow(); - let tx; - let funding_output; - - let events_2 = node_a.node.get_and_clear_pending_events(); - assert_eq!(events_2.len(), 1); - match events_2[0] { - Event::FundingGenerationReady { ref temporary_channel_id, ref channel_value_satoshis, ref output_script, user_channel_id } => { - assert_eq!(*channel_value_satoshis, channel_value); - assert_eq!(user_channel_id, 42); - - tx = Transaction { version: chan_id as u32, lock_time: 0, input: Vec::new(), output: vec![TxOut { - value: *channel_value_satoshis, script_pubkey: output_script.clone(), - }]}; - funding_output = OutPoint::new(tx.txid(), 0); - - node_a.node.funding_transaction_generated(&temporary_channel_id, funding_output); - let mut added_monitors = node_a.chan_monitor.added_monitors.lock().unwrap(); - assert_eq!(added_monitors.len(), 1); - assert_eq!(added_monitors[0].0, funding_output); - added_monitors.clear(); - }, - _ => panic!("Unexpected event"), - } - - node_b.node.handle_funding_created(&node_a.node.get_our_node_id(), &get_event_msg!(node_a, MessageSendEvent::SendFundingCreated, node_b.node.get_our_node_id())).unwrap(); - { - let mut added_monitors = node_b.chan_monitor.added_monitors.lock().unwrap(); - assert_eq!(added_monitors.len(), 1); - assert_eq!(added_monitors[0].0, funding_output); - added_monitors.clear(); - } - - node_a.node.handle_funding_signed(&node_b.node.get_our_node_id(), &get_event_msg!(node_b, MessageSendEvent::SendFundingSigned, node_a.node.get_our_node_id())).unwrap(); - { - let mut added_monitors = node_a.chan_monitor.added_monitors.lock().unwrap(); - assert_eq!(added_monitors.len(), 1); - assert_eq!(added_monitors[0].0, funding_output); - added_monitors.clear(); - } - - let events_4 = node_a.node.get_and_clear_pending_events(); - assert_eq!(events_4.len(), 1); - match events_4[0] { - Event::FundingBroadcastSafe { ref funding_txo, user_channel_id } => { - assert_eq!(user_channel_id, 42); - assert_eq!(*funding_txo, funding_output); - }, - _ => panic!("Unexpected event"), - }; - - tx - } - - fn create_chan_between_nodes_with_value_confirm(node_a: &Node, node_b: &Node, tx: &Transaction) -> ((msgs::FundingLocked, msgs::AnnouncementSignatures), [u8; 32]) { - confirm_transaction(&node_b.chain_monitor, &tx, tx.version); - node_a.node.handle_funding_locked(&node_b.node.get_our_node_id(), &get_event_msg!(node_b, MessageSendEvent::SendFundingLocked, node_a.node.get_our_node_id())).unwrap(); - - let channel_id; - - confirm_transaction(&node_a.chain_monitor, &tx, tx.version); - let events_6 = node_a.node.get_and_clear_pending_msg_events(); - assert_eq!(events_6.len(), 2); - ((match events_6[0] { - MessageSendEvent::SendFundingLocked { ref node_id, ref msg } => { - channel_id = msg.channel_id.clone(); - assert_eq!(*node_id, node_b.node.get_our_node_id()); - msg.clone() - }, - _ => panic!("Unexpected event"), - }, match events_6[1] { - MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } => { - assert_eq!(*node_id, node_b.node.get_our_node_id()); - msg.clone() - }, - _ => panic!("Unexpected event"), - }), channel_id) - } - - fn create_chan_between_nodes_with_value_a(node_a: &Node, node_b: &Node, channel_value: u64, push_msat: u64) -> ((msgs::FundingLocked, msgs::AnnouncementSignatures), [u8; 32], Transaction) { - let tx = create_chan_between_nodes_with_value_init(node_a, node_b, channel_value, push_msat); - let (msgs, chan_id) = create_chan_between_nodes_with_value_confirm(node_a, node_b, &tx); - (msgs, chan_id, tx) - } - - fn create_chan_between_nodes_with_value_b(node_a: &Node, node_b: &Node, as_funding_msgs: &(msgs::FundingLocked, msgs::AnnouncementSignatures)) -> (msgs::ChannelAnnouncement, msgs::ChannelUpdate, msgs::ChannelUpdate) { - node_b.node.handle_funding_locked(&node_a.node.get_our_node_id(), &as_funding_msgs.0).unwrap(); - let bs_announcement_sigs = get_event_msg!(node_b, MessageSendEvent::SendAnnouncementSignatures, node_a.node.get_our_node_id()); - node_b.node.handle_announcement_signatures(&node_a.node.get_our_node_id(), &as_funding_msgs.1).unwrap(); - - let events_7 = node_b.node.get_and_clear_pending_msg_events(); - assert_eq!(events_7.len(), 1); - let (announcement, bs_update) = match events_7[0] { - MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => { - (msg, update_msg) - }, - _ => panic!("Unexpected event"), - }; - - node_a.node.handle_announcement_signatures(&node_b.node.get_our_node_id(), &bs_announcement_sigs).unwrap(); - let events_8 = node_a.node.get_and_clear_pending_msg_events(); - assert_eq!(events_8.len(), 1); - let as_update = match events_8[0] { - MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => { - assert!(*announcement == *msg); - assert_eq!(update_msg.contents.short_channel_id, announcement.contents.short_channel_id); - assert_eq!(update_msg.contents.short_channel_id, bs_update.contents.short_channel_id); - update_msg - }, - _ => panic!("Unexpected event"), - }; - - *node_a.network_chan_count.borrow_mut() += 1; - - ((*announcement).clone(), (*as_update).clone(), (*bs_update).clone()) - } - - fn create_announced_chan_between_nodes(nodes: &Vec, a: usize, b: usize) -> (msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction) { - create_announced_chan_between_nodes_with_value(nodes, a, b, 100000, 10001) - } - - fn create_announced_chan_between_nodes_with_value(nodes: &Vec, a: usize, b: usize, channel_value: u64, push_msat: u64) -> (msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction) { - let chan_announcement = create_chan_between_nodes_with_value(&nodes[a], &nodes[b], channel_value, push_msat); - for node in nodes { - assert!(node.router.handle_channel_announcement(&chan_announcement.0).unwrap()); - node.router.handle_channel_update(&chan_announcement.1).unwrap(); - node.router.handle_channel_update(&chan_announcement.2).unwrap(); - } - (chan_announcement.1, chan_announcement.2, chan_announcement.3, chan_announcement.4) - } - - macro_rules! check_spends { - ($tx: expr, $spends_tx: expr) => { - { - let mut funding_tx_map = HashMap::new(); - let spends_tx = $spends_tx; - funding_tx_map.insert(spends_tx.txid(), spends_tx); - $tx.verify(&funding_tx_map).unwrap(); - } - } - } - - macro_rules! get_closing_signed_broadcast { - ($node: expr, $dest_pubkey: expr) => { - { - let events = $node.get_and_clear_pending_msg_events(); - assert!(events.len() == 1 || events.len() == 2); - (match events[events.len() - 1] { - MessageSendEvent::BroadcastChannelUpdate { ref msg } => { - assert_eq!(msg.contents.flags & 2, 2); - msg.clone() - }, - _ => panic!("Unexpected event"), - }, if events.len() == 2 { - match events[0] { - MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => { - assert_eq!(*node_id, $dest_pubkey); - Some(msg.clone()) - }, - _ => panic!("Unexpected event"), - } - } else { None }) - } - } - } - - fn close_channel(outbound_node: &Node, inbound_node: &Node, channel_id: &[u8; 32], funding_tx: Transaction, close_inbound_first: bool) -> (msgs::ChannelUpdate, msgs::ChannelUpdate, Transaction) { - let (node_a, broadcaster_a, struct_a) = if close_inbound_first { (&inbound_node.node, &inbound_node.tx_broadcaster, inbound_node) } else { (&outbound_node.node, &outbound_node.tx_broadcaster, outbound_node) }; - let (node_b, broadcaster_b) = if close_inbound_first { (&outbound_node.node, &outbound_node.tx_broadcaster) } else { (&inbound_node.node, &inbound_node.tx_broadcaster) }; - let (tx_a, tx_b); - - node_a.close_channel(channel_id).unwrap(); - node_b.handle_shutdown(&node_a.get_our_node_id(), &get_event_msg!(struct_a, MessageSendEvent::SendShutdown, node_b.get_our_node_id())).unwrap(); - - let events_1 = node_b.get_and_clear_pending_msg_events(); - assert!(events_1.len() >= 1); - let shutdown_b = match events_1[0] { - MessageSendEvent::SendShutdown { ref node_id, ref msg } => { - assert_eq!(node_id, &node_a.get_our_node_id()); - msg.clone() - }, - _ => panic!("Unexpected event"), - }; - - let closing_signed_b = if !close_inbound_first { - assert_eq!(events_1.len(), 1); - None - } else { - Some(match events_1[1] { - MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => { - assert_eq!(node_id, &node_a.get_our_node_id()); - msg.clone() - }, - _ => panic!("Unexpected event"), - }) - }; - - node_a.handle_shutdown(&node_b.get_our_node_id(), &shutdown_b).unwrap(); - let (as_update, bs_update) = if close_inbound_first { - assert!(node_a.get_and_clear_pending_msg_events().is_empty()); - node_a.handle_closing_signed(&node_b.get_our_node_id(), &closing_signed_b.unwrap()).unwrap(); - assert_eq!(broadcaster_a.txn_broadcasted.lock().unwrap().len(), 1); - tx_a = broadcaster_a.txn_broadcasted.lock().unwrap().remove(0); - let (as_update, closing_signed_a) = get_closing_signed_broadcast!(node_a, node_b.get_our_node_id()); - - node_b.handle_closing_signed(&node_a.get_our_node_id(), &closing_signed_a.unwrap()).unwrap(); - let (bs_update, none_b) = get_closing_signed_broadcast!(node_b, node_a.get_our_node_id()); - assert!(none_b.is_none()); - assert_eq!(broadcaster_b.txn_broadcasted.lock().unwrap().len(), 1); - tx_b = broadcaster_b.txn_broadcasted.lock().unwrap().remove(0); - (as_update, bs_update) - } else { - let closing_signed_a = get_event_msg!(struct_a, MessageSendEvent::SendClosingSigned, node_b.get_our_node_id()); - - node_b.handle_closing_signed(&node_a.get_our_node_id(), &closing_signed_a).unwrap(); - assert_eq!(broadcaster_b.txn_broadcasted.lock().unwrap().len(), 1); - tx_b = broadcaster_b.txn_broadcasted.lock().unwrap().remove(0); - let (bs_update, closing_signed_b) = get_closing_signed_broadcast!(node_b, node_a.get_our_node_id()); - - node_a.handle_closing_signed(&node_b.get_our_node_id(), &closing_signed_b.unwrap()).unwrap(); - let (as_update, none_a) = get_closing_signed_broadcast!(node_a, node_b.get_our_node_id()); - assert!(none_a.is_none()); - assert_eq!(broadcaster_a.txn_broadcasted.lock().unwrap().len(), 1); - tx_a = broadcaster_a.txn_broadcasted.lock().unwrap().remove(0); - (as_update, bs_update) - }; - assert_eq!(tx_a, tx_b); - check_spends!(tx_a, funding_tx); - - (as_update, bs_update, tx_a) - } - - struct SendEvent { - node_id: PublicKey, - msgs: Vec, - commitment_msg: msgs::CommitmentSigned, - } - impl SendEvent { - fn from_commitment_update(node_id: PublicKey, updates: msgs::CommitmentUpdate) -> SendEvent { - assert!(updates.update_fulfill_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - SendEvent { node_id: node_id, msgs: updates.update_add_htlcs, commitment_msg: updates.commitment_signed } - } - - fn from_event(event: MessageSendEvent) -> SendEvent { - match event { - MessageSendEvent::UpdateHTLCs { node_id, updates } => SendEvent::from_commitment_update(node_id, updates), - _ => panic!("Unexpected event type!"), - } - } - - fn from_node(node: &Node) -> SendEvent { - let mut events = node.node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - SendEvent::from_event(events.pop().unwrap()) - } - } - - macro_rules! check_added_monitors { - ($node: expr, $count: expr) => { - { - let mut added_monitors = $node.chan_monitor.added_monitors.lock().unwrap(); - assert_eq!(added_monitors.len(), $count); - added_monitors.clear(); - } - } - } - - macro_rules! commitment_signed_dance { - ($node_a: expr, $node_b: expr, $commitment_signed: expr, $fail_backwards: expr, true /* skip last step */) => { - { - check_added_monitors!($node_a, 0); - assert!($node_a.node.get_and_clear_pending_msg_events().is_empty()); - $node_a.node.handle_commitment_signed(&$node_b.node.get_our_node_id(), &$commitment_signed).unwrap(); - check_added_monitors!($node_a, 1); - commitment_signed_dance!($node_a, $node_b, (), $fail_backwards, true, false); - } - }; - ($node_a: expr, $node_b: expr, (), $fail_backwards: expr, true /* skip last step */, true /* return extra message */, true /* return last RAA */) => { - { - let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!($node_a, $node_b.node.get_our_node_id()); - check_added_monitors!($node_b, 0); - assert!($node_b.node.get_and_clear_pending_msg_events().is_empty()); - $node_b.node.handle_revoke_and_ack(&$node_a.node.get_our_node_id(), &as_revoke_and_ack).unwrap(); - assert!($node_b.node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!($node_b, 1); - $node_b.node.handle_commitment_signed(&$node_a.node.get_our_node_id(), &as_commitment_signed).unwrap(); - let (bs_revoke_and_ack, extra_msg_option) = { - let events = $node_b.node.get_and_clear_pending_msg_events(); - assert!(events.len() <= 2); - (match events[0] { - MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => { - assert_eq!(*node_id, $node_a.node.get_our_node_id()); - (*msg).clone() - }, - _ => panic!("Unexpected event"), - }, events.get(1).map(|e| e.clone())) - }; - check_added_monitors!($node_b, 1); - if $fail_backwards { - assert!($node_a.node.get_and_clear_pending_events().is_empty()); - assert!($node_a.node.get_and_clear_pending_msg_events().is_empty()); - } - (extra_msg_option, bs_revoke_and_ack) - } - }; - ($node_a: expr, $node_b: expr, $commitment_signed: expr, $fail_backwards: expr, true /* skip last step */, false /* return extra message */, true /* return last RAA */) => { - { - check_added_monitors!($node_a, 0); - assert!($node_a.node.get_and_clear_pending_msg_events().is_empty()); - $node_a.node.handle_commitment_signed(&$node_b.node.get_our_node_id(), &$commitment_signed).unwrap(); - check_added_monitors!($node_a, 1); - let (extra_msg_option, bs_revoke_and_ack) = commitment_signed_dance!($node_a, $node_b, (), $fail_backwards, true, true, true); - assert!(extra_msg_option.is_none()); - bs_revoke_and_ack - } - }; - ($node_a: expr, $node_b: expr, (), $fail_backwards: expr, true /* skip last step */, true /* return extra message */) => { - { - let (extra_msg_option, bs_revoke_and_ack) = commitment_signed_dance!($node_a, $node_b, (), $fail_backwards, true, true, true); - $node_a.node.handle_revoke_and_ack(&$node_b.node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); - { - let mut added_monitors = $node_a.chan_monitor.added_monitors.lock().unwrap(); - if $fail_backwards { - assert_eq!(added_monitors.len(), 2); - assert!(added_monitors[0].0 != added_monitors[1].0); - } else { - assert_eq!(added_monitors.len(), 1); - } - added_monitors.clear(); - } - extra_msg_option - } - }; - ($node_a: expr, $node_b: expr, (), $fail_backwards: expr, true /* skip last step */, false /* no extra message */) => { - { - assert!(commitment_signed_dance!($node_a, $node_b, (), $fail_backwards, true, true).is_none()); - } - }; - ($node_a: expr, $node_b: expr, $commitment_signed: expr, $fail_backwards: expr) => { - { - commitment_signed_dance!($node_a, $node_b, $commitment_signed, $fail_backwards, true); - if $fail_backwards { - let channel_state = $node_a.node.channel_state.lock().unwrap(); - assert_eq!(channel_state.pending_msg_events.len(), 1); - if let MessageSendEvent::UpdateHTLCs { ref node_id, .. } = channel_state.pending_msg_events[0] { - assert_ne!(*node_id, $node_b.node.get_our_node_id()); - } else { panic!("Unexpected event"); } - } else { - assert!($node_a.node.get_and_clear_pending_msg_events().is_empty()); - } - } - } - } - - macro_rules! get_payment_preimage_hash { - ($node: expr) => { - { - let payment_preimage = PaymentPreimage([*$node.network_payment_count.borrow(); 32]); - *$node.network_payment_count.borrow_mut() += 1; - let payment_hash = PaymentHash(Sha256::hash(&payment_preimage.0[..]).into_inner()); - (payment_preimage, payment_hash) - } - } - } - - fn send_along_route(origin_node: &Node, route: Route, expected_route: &[&Node], recv_value: u64) -> (PaymentPreimage, PaymentHash) { - let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(origin_node); - - let mut payment_event = { - origin_node.node.send_payment(route, our_payment_hash).unwrap(); - check_added_monitors!(origin_node, 1); - - let mut events = origin_node.node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - SendEvent::from_event(events.remove(0)) - }; - let mut prev_node = origin_node; - - for (idx, &node) in expected_route.iter().enumerate() { - assert_eq!(node.node.get_our_node_id(), payment_event.node_id); - - node.node.handle_update_add_htlc(&prev_node.node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); - check_added_monitors!(node, 0); - commitment_signed_dance!(node, prev_node, payment_event.commitment_msg, false); - - let events_1 = node.node.get_and_clear_pending_events(); - assert_eq!(events_1.len(), 1); - match events_1[0] { - Event::PendingHTLCsForwardable { .. } => { }, - _ => panic!("Unexpected event"), - }; - - node.node.channel_state.lock().unwrap().next_forward = Instant::now(); - node.node.process_pending_htlc_forwards(); - - if idx == expected_route.len() - 1 { - let events_2 = node.node.get_and_clear_pending_events(); - assert_eq!(events_2.len(), 1); - match events_2[0] { - Event::PaymentReceived { ref payment_hash, amt } => { - assert_eq!(our_payment_hash, *payment_hash); - assert_eq!(amt, recv_value); - }, - _ => panic!("Unexpected event"), - } - } else { - let mut events_2 = node.node.get_and_clear_pending_msg_events(); - assert_eq!(events_2.len(), 1); - check_added_monitors!(node, 1); - payment_event = SendEvent::from_event(events_2.remove(0)); - assert_eq!(payment_event.msgs.len(), 1); - } - - prev_node = node; - } - - (our_payment_preimage, our_payment_hash) - } - - fn claim_payment_along_route(origin_node: &Node, expected_route: &[&Node], skip_last: bool, our_payment_preimage: PaymentPreimage) { - assert!(expected_route.last().unwrap().node.claim_funds(our_payment_preimage)); - check_added_monitors!(expected_route.last().unwrap(), 1); - - let mut next_msgs: Option<(msgs::UpdateFulfillHTLC, msgs::CommitmentSigned)> = None; - let mut expected_next_node = expected_route.last().unwrap().node.get_our_node_id(); - macro_rules! get_next_msgs { - ($node: expr) => { - { - let events = $node.node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => { - assert!(update_add_htlcs.is_empty()); - assert_eq!(update_fulfill_htlcs.len(), 1); - assert!(update_fail_htlcs.is_empty()); - assert!(update_fail_malformed_htlcs.is_empty()); - assert!(update_fee.is_none()); - expected_next_node = node_id.clone(); - Some((update_fulfill_htlcs[0].clone(), commitment_signed.clone())) - }, - _ => panic!("Unexpected event"), - } - } - } - } - - macro_rules! last_update_fulfill_dance { - ($node: expr, $prev_node: expr) => { - { - $node.node.handle_update_fulfill_htlc(&$prev_node.node.get_our_node_id(), &next_msgs.as_ref().unwrap().0).unwrap(); - check_added_monitors!($node, 0); - assert!($node.node.get_and_clear_pending_msg_events().is_empty()); - commitment_signed_dance!($node, $prev_node, next_msgs.as_ref().unwrap().1, false); - } - } - } - macro_rules! mid_update_fulfill_dance { - ($node: expr, $prev_node: expr, $new_msgs: expr) => { - { - $node.node.handle_update_fulfill_htlc(&$prev_node.node.get_our_node_id(), &next_msgs.as_ref().unwrap().0).unwrap(); - check_added_monitors!($node, 1); - let new_next_msgs = if $new_msgs { - get_next_msgs!($node) - } else { - assert!($node.node.get_and_clear_pending_msg_events().is_empty()); - None - }; - commitment_signed_dance!($node, $prev_node, next_msgs.as_ref().unwrap().1, false); - next_msgs = new_next_msgs; - } - } - } - - let mut prev_node = expected_route.last().unwrap(); - for (idx, node) in expected_route.iter().rev().enumerate() { - assert_eq!(expected_next_node, node.node.get_our_node_id()); - let update_next_msgs = !skip_last || idx != expected_route.len() - 1; - if next_msgs.is_some() { - mid_update_fulfill_dance!(node, prev_node, update_next_msgs); - } else if update_next_msgs { - next_msgs = get_next_msgs!(node); - } else { - assert!(node.node.get_and_clear_pending_msg_events().is_empty()); - } - if !skip_last && idx == expected_route.len() - 1 { - assert_eq!(expected_next_node, origin_node.node.get_our_node_id()); - } - - prev_node = node; - } - - if !skip_last { - last_update_fulfill_dance!(origin_node, expected_route.first().unwrap()); - let events = origin_node.node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentSent { payment_preimage } => { - assert_eq!(payment_preimage, our_payment_preimage); - }, - _ => panic!("Unexpected event"), - } - } - } - - fn claim_payment(origin_node: &Node, expected_route: &[&Node], our_payment_preimage: PaymentPreimage) { - claim_payment_along_route(origin_node, expected_route, false, our_payment_preimage); - } - - const TEST_FINAL_CLTV: u32 = 32; - - fn route_payment(origin_node: &Node, expected_route: &[&Node], recv_value: u64) -> (PaymentPreimage, PaymentHash) { - let route = origin_node.router.get_route(&expected_route.last().unwrap().node.get_our_node_id(), None, &Vec::new(), recv_value, TEST_FINAL_CLTV).unwrap(); - assert_eq!(route.hops.len(), expected_route.len()); - for (node, hop) in expected_route.iter().zip(route.hops.iter()) { - assert_eq!(hop.pubkey, node.node.get_our_node_id()); - } - - send_along_route(origin_node, route, expected_route, recv_value) - } - - fn route_over_limit(origin_node: &Node, expected_route: &[&Node], recv_value: u64) { - let route = origin_node.router.get_route(&expected_route.last().unwrap().node.get_our_node_id(), None, &Vec::new(), recv_value, TEST_FINAL_CLTV).unwrap(); - assert_eq!(route.hops.len(), expected_route.len()); - for (node, hop) in expected_route.iter().zip(route.hops.iter()) { - assert_eq!(hop.pubkey, node.node.get_our_node_id()); - } - - let (_, our_payment_hash) = get_payment_preimage_hash!(origin_node); - - let err = origin_node.node.send_payment(route, our_payment_hash).err().unwrap(); - match err { - APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our max HTLC value in flight"), - _ => panic!("Unknown error variants"), - }; - } - - fn send_payment(origin: &Node, expected_route: &[&Node], recv_value: u64) { - let our_payment_preimage = route_payment(&origin, expected_route, recv_value).0; - claim_payment(&origin, expected_route, our_payment_preimage); - } - - fn fail_payment_along_route(origin_node: &Node, expected_route: &[&Node], skip_last: bool, our_payment_hash: PaymentHash) { - assert!(expected_route.last().unwrap().node.fail_htlc_backwards(&our_payment_hash, 0)); - check_added_monitors!(expected_route.last().unwrap(), 1); - - let mut next_msgs: Option<(msgs::UpdateFailHTLC, msgs::CommitmentSigned)> = None; - macro_rules! update_fail_dance { - ($node: expr, $prev_node: expr, $last_node: expr) => { - { - $node.node.handle_update_fail_htlc(&$prev_node.node.get_our_node_id(), &next_msgs.as_ref().unwrap().0).unwrap(); - commitment_signed_dance!($node, $prev_node, next_msgs.as_ref().unwrap().1, !$last_node); - } - } - } - - let mut expected_next_node = expected_route.last().unwrap().node.get_our_node_id(); - let mut prev_node = expected_route.last().unwrap(); - for (idx, node) in expected_route.iter().rev().enumerate() { - assert_eq!(expected_next_node, node.node.get_our_node_id()); - if next_msgs.is_some() { - // We may be the "last node" for the purpose of the commitment dance if we're - // skipping the last node (implying it is disconnected) and we're the - // second-to-last node! - update_fail_dance!(node, prev_node, skip_last && idx == expected_route.len() - 1); - } - - let events = node.node.get_and_clear_pending_msg_events(); - if !skip_last || idx != expected_route.len() - 1 { - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => { - assert!(update_add_htlcs.is_empty()); - assert!(update_fulfill_htlcs.is_empty()); - assert_eq!(update_fail_htlcs.len(), 1); - assert!(update_fail_malformed_htlcs.is_empty()); - assert!(update_fee.is_none()); - expected_next_node = node_id.clone(); - next_msgs = Some((update_fail_htlcs[0].clone(), commitment_signed.clone())); - }, - _ => panic!("Unexpected event"), - } - } else { - assert!(events.is_empty()); - } - if !skip_last && idx == expected_route.len() - 1 { - assert_eq!(expected_next_node, origin_node.node.get_our_node_id()); - } - - prev_node = node; - } - - if !skip_last { - update_fail_dance!(origin_node, expected_route.first().unwrap(), true); - - let events = origin_node.node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentFailed { payment_hash, rejected_by_dest, .. } => { - assert_eq!(payment_hash, our_payment_hash); - assert!(rejected_by_dest); - }, - _ => panic!("Unexpected event"), - } - } - } - - fn fail_payment(origin_node: &Node, expected_route: &[&Node], our_payment_hash: PaymentHash) { - fail_payment_along_route(origin_node, expected_route, false, our_payment_hash); - } - - fn create_network(node_count: usize) -> Vec { - let mut nodes = Vec::new(); - let mut rng = thread_rng(); - let secp_ctx = Secp256k1::new(); - - let chan_count = Rc::new(RefCell::new(0)); - let payment_count = Rc::new(RefCell::new(0)); - - for i in 0..node_count { - let logger: Arc = Arc::new(test_utils::TestLogger::with_id(format!("node {}", i))); - let feeest = Arc::new(test_utils::TestFeeEstimator { sat_per_kw: 253 }); - let chain_monitor = Arc::new(chaininterface::ChainWatchInterfaceUtil::new(Network::Testnet, Arc::clone(&logger))); - let tx_broadcaster = Arc::new(test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new())}); - let mut seed = [0; 32]; - rng.fill_bytes(&mut seed); - let keys_manager = Arc::new(test_utils::TestKeysInterface::new(&seed, Network::Testnet, Arc::clone(&logger))); - let chan_monitor = Arc::new(test_utils::TestChannelMonitor::new(chain_monitor.clone(), tx_broadcaster.clone(), logger.clone())); - let mut config = UserConfig::new(); - config.channel_options.announced_channel = true; - config.channel_limits.force_announced_channel_preference = false; - let node = ChannelManager::new(Network::Testnet, feeest.clone(), chan_monitor.clone(), chain_monitor.clone(), tx_broadcaster.clone(), Arc::clone(&logger), keys_manager.clone(), config).unwrap(); - let router = Router::new(PublicKey::from_secret_key(&secp_ctx, &keys_manager.get_node_secret()), chain_monitor.clone(), Arc::clone(&logger)); - nodes.push(Node { chain_monitor, tx_broadcaster, chan_monitor, node, router, keys_manager, node_seed: seed, - network_payment_count: payment_count.clone(), - network_chan_count: chan_count.clone(), - }); - } - - nodes - } - - #[test] - fn test_async_inbound_update_fee() { - let mut nodes = create_network(2); - let chan = create_announced_chan_between_nodes(&nodes, 0, 1); - let channel_id = chan.2; - - // balancing - send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000); - - // A B - // update_fee -> - // send (1) commitment_signed -. - // <- update_add_htlc/commitment_signed - // send (2) RAA (awaiting remote revoke) -. - // (1) commitment_signed is delivered -> - // .- send (3) RAA (awaiting remote revoke) - // (2) RAA is delivered -> - // .- send (4) commitment_signed - // <- (3) RAA is delivered - // send (5) commitment_signed -. - // <- (4) commitment_signed is delivered - // send (6) RAA -. - // (5) commitment_signed is delivered -> - // <- RAA - // (6) RAA is delivered -> - - // First nodes[0] generates an update_fee - nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap(); - check_added_monitors!(nodes[0], 1); - - let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_0.len(), 1); - let (update_msg, commitment_signed) = match events_0[0] { // (1) - MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => { - (update_fee.as_ref(), commitment_signed) - }, - _ => panic!("Unexpected event"), - }; - - nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap(); - - // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]... - let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]); - nodes[1].node.send_payment(nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV).unwrap(), our_payment_hash).unwrap(); - check_added_monitors!(nodes[1], 1); - - let payment_event = { - let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events_1.len(), 1); - SendEvent::from_event(events_1.remove(0)) - }; - assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id()); - assert_eq!(payment_event.msgs.len(), 1); - - // ...now when the messages get delivered everyone should be happy - nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); // (2) - let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[0], 1); - - // deliver(1), generate (3): - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap(); - let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); - // nodes[1] is awaiting nodes[0] revoke_and_ack so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[1], 1); - - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); // deliver (2) - let bs_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - assert!(bs_update.update_add_htlcs.is_empty()); // (4) - assert!(bs_update.update_fulfill_htlcs.is_empty()); // (4) - assert!(bs_update.update_fail_htlcs.is_empty()); // (4) - assert!(bs_update.update_fail_malformed_htlcs.is_empty()); // (4) - assert!(bs_update.update_fee.is_none()); // (4) - check_added_monitors!(nodes[1], 1); - - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); // deliver (3) - let as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - assert!(as_update.update_add_htlcs.is_empty()); // (5) - assert!(as_update.update_fulfill_htlcs.is_empty()); // (5) - assert!(as_update.update_fail_htlcs.is_empty()); // (5) - assert!(as_update.update_fail_malformed_htlcs.is_empty()); // (5) - assert!(as_update.update_fee.is_none()); // (5) - check_added_monitors!(nodes[0], 1); - - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_update.commitment_signed).unwrap(); // deliver (4) - let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // only (6) so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[0], 1); - - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_update.commitment_signed).unwrap(); // deliver (5) - let bs_second_revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); - check_added_monitors!(nodes[1], 1); - - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke).unwrap(); - check_added_monitors!(nodes[0], 1); - - let events_2 = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events_2.len(), 1); - match events_2[0] { - Event::PendingHTLCsForwardable {..} => {}, // If we actually processed we'd receive the payment - _ => panic!("Unexpected event"), - } - - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke).unwrap(); // deliver (6) - check_added_monitors!(nodes[1], 1); - } - - #[test] - fn test_update_fee_unordered_raa() { - // Just the intro to the previous test followed by an out-of-order RAA (which caused a - // crash in an earlier version of the update_fee patch) - let mut nodes = create_network(2); - let chan = create_announced_chan_between_nodes(&nodes, 0, 1); - let channel_id = chan.2; - - // balancing - send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000); - - // First nodes[0] generates an update_fee - nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap(); - check_added_monitors!(nodes[0], 1); - - let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_0.len(), 1); - let update_msg = match events_0[0] { // (1) - MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, .. }, .. } => { - update_fee.as_ref() - }, - _ => panic!("Unexpected event"), - }; - - nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap(); - - // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]... - let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]); - nodes[1].node.send_payment(nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV).unwrap(), our_payment_hash).unwrap(); - check_added_monitors!(nodes[1], 1); - - let payment_event = { - let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events_1.len(), 1); - SendEvent::from_event(events_1.remove(0)) - }; - assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id()); - assert_eq!(payment_event.msgs.len(), 1); - - // ...now when the messages get delivered everyone should be happy - nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); // (2) - let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[0], 1); - - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg).unwrap(); // deliver (2) - check_added_monitors!(nodes[1], 1); - - // We can't continue, sadly, because our (1) now has a bogus signature - } - - #[test] - fn test_multi_flight_update_fee() { - let nodes = create_network(2); - let chan = create_announced_chan_between_nodes(&nodes, 0, 1); - let channel_id = chan.2; - - // A B - // update_fee/commitment_signed -> - // .- send (1) RAA and (2) commitment_signed - // update_fee (never committed) -> - // (3) update_fee -> - // We have to manually generate the above update_fee, it is allowed by the protocol but we - // don't track which updates correspond to which revoke_and_ack responses so we're in - // AwaitingRAA mode and will not generate the update_fee yet. - // <- (1) RAA delivered - // (3) is generated and send (4) CS -. - // Note that A cannot generate (4) prior to (1) being delivered as it otherwise doesn't - // know the per_commitment_point to use for it. - // <- (2) commitment_signed delivered - // revoke_and_ack -> - // B should send no response here - // (4) commitment_signed delivered -> - // <- RAA/commitment_signed delivered - // revoke_and_ack -> - - // First nodes[0] generates an update_fee - let initial_feerate = get_feerate!(nodes[0], channel_id); - nodes[0].node.update_fee(channel_id, initial_feerate + 20).unwrap(); - check_added_monitors!(nodes[0], 1); - - let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_0.len(), 1); - let (update_msg_1, commitment_signed_1) = match events_0[0] { // (1) - MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => { - (update_fee.as_ref().unwrap(), commitment_signed) - }, - _ => panic!("Unexpected event"), - }; - - // Deliver first update_fee/commitment_signed pair, generating (1) and (2): - nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg_1).unwrap(); - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed_1).unwrap(); - let (bs_revoke_msg, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - check_added_monitors!(nodes[1], 1); - - // nodes[0] is awaiting a revoke from nodes[1] before it will create a new commitment - // transaction: - nodes[0].node.update_fee(channel_id, initial_feerate + 40).unwrap(); - assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - - // Create the (3) update_fee message that nodes[0] will generate before it does... - let mut update_msg_2 = msgs::UpdateFee { - channel_id: update_msg_1.channel_id.clone(), - feerate_per_kw: (initial_feerate + 30) as u32, - }; - - nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2).unwrap(); - - update_msg_2.feerate_per_kw = (initial_feerate + 40) as u32; - // Deliver (3) - nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2).unwrap(); - - // Deliver (1), generating (3) and (4) - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_msg).unwrap(); - let as_second_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - check_added_monitors!(nodes[0], 1); - assert!(as_second_update.update_add_htlcs.is_empty()); - assert!(as_second_update.update_fulfill_htlcs.is_empty()); - assert!(as_second_update.update_fail_htlcs.is_empty()); - assert!(as_second_update.update_fail_malformed_htlcs.is_empty()); - // Check that the update_fee newly generated matches what we delivered: - assert_eq!(as_second_update.update_fee.as_ref().unwrap().channel_id, update_msg_2.channel_id); - assert_eq!(as_second_update.update_fee.as_ref().unwrap().feerate_per_kw, update_msg_2.feerate_per_kw); - - // Deliver (2) commitment_signed - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed).unwrap(); - let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - check_added_monitors!(nodes[0], 1); - // No commitment_signed so get_event_msg's assert(len == 1) passes - - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg).unwrap(); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[1], 1); - - // Delever (4) - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_second_update.commitment_signed).unwrap(); - let (bs_second_revoke, bs_second_commitment) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - check_added_monitors!(nodes[1], 1); - - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke).unwrap(); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[0], 1); - - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment).unwrap(); - let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[0], 1); - - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke).unwrap(); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[1], 1); - } - - #[test] - fn test_update_fee_vanilla() { - let nodes = create_network(2); - let chan = create_announced_chan_between_nodes(&nodes, 0, 1); - let channel_id = chan.2; - - let feerate = get_feerate!(nodes[0], channel_id); - nodes[0].node.update_fee(channel_id, feerate+25).unwrap(); - check_added_monitors!(nodes[0], 1); - - let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_0.len(), 1); - let (update_msg, commitment_signed) = match events_0[0] { - MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => { - (update_fee.as_ref(), commitment_signed) - }, - _ => panic!("Unexpected event"), - }; - nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap(); - - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap(); - let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - check_added_monitors!(nodes[1], 1); - - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap(); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[0], 1); - - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed).unwrap(); - let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[0], 1); - - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg).unwrap(); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[1], 1); - } - - #[test] - fn test_update_fee_that_funder_cannot_afford() { - let nodes = create_network(2); - let channel_value = 1888; - let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 700000); - let channel_id = chan.2; - - let feerate = 260; - nodes[0].node.update_fee(channel_id, feerate).unwrap(); - check_added_monitors!(nodes[0], 1); - let update_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - - nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg.update_fee.unwrap()).unwrap(); - - commitment_signed_dance!(nodes[1], nodes[0], update_msg.commitment_signed, false); - - //Confirm that the new fee based on the last local commitment txn is what we expected based on the feerate of 260 set above. - //This value results in a fee that is exactly what the funder can afford (277 sat + 1000 sat channel reserve) - { - let chan_lock = nodes[1].node.channel_state.lock().unwrap(); - let chan = chan_lock.by_id.get(&channel_id).unwrap(); - - //We made sure neither party's funds are below the dust limit so -2 non-HTLC txns from number of outputs - let num_htlcs = chan.last_local_commitment_txn[0].output.len() - 2; - let total_fee: u64 = feerate * (COMMITMENT_TX_BASE_WEIGHT + (num_htlcs as u64) * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000; - let mut actual_fee = chan.last_local_commitment_txn[0].output.iter().fold(0, |acc, output| acc + output.value); - actual_fee = channel_value - actual_fee; - assert_eq!(total_fee, actual_fee); - } //drop the mutex - - //Add 2 to the previous fee rate to the final fee increases by 1 (with no HTLCs the fee is essentially - //fee_rate*(724/1000) so the increment of 1*0.724 is rounded back down) - nodes[0].node.update_fee(channel_id, feerate+2).unwrap(); - check_added_monitors!(nodes[0], 1); - - let update2_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - - nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update2_msg.update_fee.unwrap()).unwrap(); - - //While producing the commitment_signed response after handling a received update_fee request the - //check to see if the funder, who sent the update_fee request, can afford the new fee (funder_balance >= fee+channel_reserve) - //Should produce and error. - let err = nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &update2_msg.commitment_signed).unwrap_err(); - - assert!(match err.err { - "Funding remote cannot afford proposed new fee" => true, - _ => false, - }); - - //clear the message we could not handle - nodes[1].node.get_and_clear_pending_msg_events(); - } - - #[test] - fn test_update_fee_with_fundee_update_add_htlc() { - let mut nodes = create_network(2); - let chan = create_announced_chan_between_nodes(&nodes, 0, 1); - let channel_id = chan.2; - - // balancing - send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000); - - let feerate = get_feerate!(nodes[0], channel_id); - nodes[0].node.update_fee(channel_id, feerate+20).unwrap(); - check_added_monitors!(nodes[0], 1); - - let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_0.len(), 1); - let (update_msg, commitment_signed) = match events_0[0] { - MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => { - (update_fee.as_ref(), commitment_signed) - }, - _ => panic!("Unexpected event"), - }; - nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap(); - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap(); - let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - check_added_monitors!(nodes[1], 1); - - let route = nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 800000, TEST_FINAL_CLTV).unwrap(); - - let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[1]); - - // nothing happens since node[1] is in AwaitingRemoteRevoke - nodes[1].node.send_payment(route, our_payment_hash).unwrap(); - { - let mut added_monitors = nodes[0].chan_monitor.added_monitors.lock().unwrap(); - assert_eq!(added_monitors.len(), 0); - added_monitors.clear(); - } - assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - // node[1] has nothing to do - - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap(); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[0], 1); - - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed).unwrap(); - let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[0], 1); - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg).unwrap(); - check_added_monitors!(nodes[1], 1); - // AwaitingRemoteRevoke ends here - - let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - assert_eq!(commitment_update.update_add_htlcs.len(), 1); - assert_eq!(commitment_update.update_fulfill_htlcs.len(), 0); - assert_eq!(commitment_update.update_fail_htlcs.len(), 0); - assert_eq!(commitment_update.update_fail_malformed_htlcs.len(), 0); - assert_eq!(commitment_update.update_fee.is_none(), true); - - nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &commitment_update.update_add_htlcs[0]).unwrap(); - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed).unwrap(); - check_added_monitors!(nodes[0], 1); - let (revoke, commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke).unwrap(); - check_added_monitors!(nodes[1], 1); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_signed).unwrap(); - check_added_monitors!(nodes[1], 1); - let revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke).unwrap(); - check_added_monitors!(nodes[0], 1); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PendingHTLCsForwardable { .. } => { }, - _ => panic!("Unexpected event"), - }; - nodes[0].node.channel_state.lock().unwrap().next_forward = Instant::now(); - nodes[0].node.process_pending_htlc_forwards(); - - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentReceived { .. } => { }, - _ => panic!("Unexpected event"), - }; - - claim_payment(&nodes[1], &vec!(&nodes[0])[..], our_payment_preimage); - - send_payment(&nodes[1], &vec!(&nodes[0])[..], 800000); - send_payment(&nodes[0], &vec!(&nodes[1])[..], 800000); - close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true); - } - - #[test] - fn test_update_fee() { - let nodes = create_network(2); - let chan = create_announced_chan_between_nodes(&nodes, 0, 1); - let channel_id = chan.2; - - // A B - // (1) update_fee/commitment_signed -> - // <- (2) revoke_and_ack - // .- send (3) commitment_signed - // (4) update_fee/commitment_signed -> - // .- send (5) revoke_and_ack (no CS as we're awaiting a revoke) - // <- (3) commitment_signed delivered - // send (6) revoke_and_ack -. - // <- (5) deliver revoke_and_ack - // (6) deliver revoke_and_ack -> - // .- send (7) commitment_signed in response to (4) - // <- (7) deliver commitment_signed - // revoke_and_ack -> - - // Create and deliver (1)... - let feerate = get_feerate!(nodes[0], channel_id); - nodes[0].node.update_fee(channel_id, feerate+20).unwrap(); - check_added_monitors!(nodes[0], 1); - - let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_0.len(), 1); - let (update_msg, commitment_signed) = match events_0[0] { - MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => { - (update_fee.as_ref(), commitment_signed) - }, - _ => panic!("Unexpected event"), - }; - nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap(); - - // Generate (2) and (3): - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap(); - let (revoke_msg, commitment_signed_0) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - check_added_monitors!(nodes[1], 1); - - // Deliver (2): - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap(); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[0], 1); - - // Create and deliver (4)... - nodes[0].node.update_fee(channel_id, feerate+30).unwrap(); - check_added_monitors!(nodes[0], 1); - let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_0.len(), 1); - let (update_msg, commitment_signed) = match events_0[0] { - MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => { - (update_fee.as_ref(), commitment_signed) - }, - _ => panic!("Unexpected event"), - }; - - nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap(); - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap(); - check_added_monitors!(nodes[1], 1); - // ... creating (5) - let revoke_msg = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - - // Handle (3), creating (6): - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed_0).unwrap(); - check_added_monitors!(nodes[0], 1); - let revoke_msg_0 = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - - // Deliver (5): - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap(); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[0], 1); - - // Deliver (6), creating (7): - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg_0).unwrap(); - let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - assert!(commitment_update.update_add_htlcs.is_empty()); - assert!(commitment_update.update_fulfill_htlcs.is_empty()); - assert!(commitment_update.update_fail_htlcs.is_empty()); - assert!(commitment_update.update_fail_malformed_htlcs.is_empty()); - assert!(commitment_update.update_fee.is_none()); - check_added_monitors!(nodes[1], 1); - - // Deliver (7) - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed).unwrap(); - check_added_monitors!(nodes[0], 1); - let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg).unwrap(); - check_added_monitors!(nodes[1], 1); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - - assert_eq!(get_feerate!(nodes[0], channel_id), feerate + 30); - assert_eq!(get_feerate!(nodes[1], channel_id), feerate + 30); - close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true); - } - - #[test] - fn pre_funding_lock_shutdown_test() { - // Test sending a shutdown prior to funding_locked after funding generation - let nodes = create_network(2); - let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 8000000, 0); - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[0].chain_monitor.block_connected_checked(&header, 1, &[&tx; 1], &[1; 1]); - nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&tx; 1], &[1; 1]); - - nodes[0].node.close_channel(&OutPoint::new(tx.txid(), 0).to_channel_id()).unwrap(); - let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap(); - let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap(); - - let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap(); - let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap(); - let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); - assert!(node_0_none.is_none()); - - assert!(nodes[0].node.list_channels().is_empty()); - assert!(nodes[1].node.list_channels().is_empty()); - } - - #[test] - fn updates_shutdown_wait() { - // Test sending a shutdown with outstanding updates pending - let mut nodes = create_network(3); - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); - let route_1 = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap(); - let route_2 = nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap(); - - let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000); - - nodes[0].node.close_channel(&chan_1.2).unwrap(); - let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap(); - let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap(); - - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - - let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]); - if let Err(APIError::ChannelUnavailable {..}) = nodes[0].node.send_payment(route_1, payment_hash) {} - else { panic!("New sends should fail!") }; - if let Err(APIError::ChannelUnavailable {..}) = nodes[1].node.send_payment(route_2, payment_hash) {} - else { panic!("New sends should fail!") }; - - assert!(nodes[2].node.claim_funds(our_payment_preimage)); - check_added_monitors!(nodes[2], 1); - let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - assert_eq!(updates.update_fulfill_htlcs.len(), 1); - nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap(); - check_added_monitors!(nodes[1], 1); - let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false); - - assert!(updates_2.update_add_htlcs.is_empty()); - assert!(updates_2.update_fail_htlcs.is_empty()); - assert!(updates_2.update_fail_malformed_htlcs.is_empty()); - assert!(updates_2.update_fee.is_none()); - assert_eq!(updates_2.update_fulfill_htlcs.len(), 1); - nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]).unwrap(); - commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true); - - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentSent { ref payment_preimage } => { - assert_eq!(our_payment_preimage, *payment_preimage); - }, - _ => panic!("Unexpected event"), - } - - let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap(); - let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap(); - let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); - assert!(node_0_none.is_none()); - - assert!(nodes[0].node.list_channels().is_empty()); - - assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1); - nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear(); - close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true); - assert!(nodes[1].node.list_channels().is_empty()); - assert!(nodes[2].node.list_channels().is_empty()); - } - - #[test] - fn htlc_fail_async_shutdown() { - // Test HTLCs fail if shutdown starts even if messages are delivered out-of-order - let mut nodes = create_network(3); - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); - - let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap(); - let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]); - nodes[0].node.send_payment(route, our_payment_hash).unwrap(); - check_added_monitors!(nodes[0], 1); - let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - assert_eq!(updates.update_add_htlcs.len(), 1); - assert!(updates.update_fulfill_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - - nodes[1].node.close_channel(&chan_1.2).unwrap(); - let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap(); - let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); - - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]).unwrap(); - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed).unwrap(); - check_added_monitors!(nodes[1], 1); - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap(); - commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false); - - let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - assert!(updates_2.update_add_htlcs.is_empty()); - assert!(updates_2.update_fulfill_htlcs.is_empty()); - assert_eq!(updates_2.update_fail_htlcs.len(), 1); - assert!(updates_2.update_fail_malformed_htlcs.is_empty()); - assert!(updates_2.update_fee.is_none()); - - nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fail_htlcs[0]).unwrap(); - commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true); - - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } => { - assert_eq!(our_payment_hash, *payment_hash); - assert!(!rejected_by_dest); - }, - _ => panic!("Unexpected event"), - } - - let msg_events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(msg_events.len(), 2); - let node_0_closing_signed = match msg_events[0] { - MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => { - assert_eq!(*node_id, nodes[1].node.get_our_node_id()); - (*msg).clone() - }, - _ => panic!("Unexpected event"), - }; - match msg_events[1] { - MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => { - assert_eq!(msg.contents.short_channel_id, chan_1.0.contents.short_channel_id); - }, - _ => panic!("Unexpected event"), - } - - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap(); - let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap(); - let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); - assert!(node_0_none.is_none()); - - assert!(nodes[0].node.list_channels().is_empty()); - - assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1); - nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear(); - close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true); - assert!(nodes[1].node.list_channels().is_empty()); - assert!(nodes[2].node.list_channels().is_empty()); - } - - fn do_test_shutdown_rebroadcast(recv_count: u8) { - // Test that shutdown/closing_signed is re-sent on reconnect with a variable number of - // messages delivered prior to disconnect - let nodes = create_network(3); - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); - - let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000); - - nodes[1].node.close_channel(&chan_1.2).unwrap(); - let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - if recv_count > 0 { - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap(); - let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); - if recv_count > 1 { - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap(); - } - } - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - - nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); - let node_0_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id()); - nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); - let node_1_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()); - - nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_reestablish).unwrap(); - let node_1_2nd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - assert!(node_1_shutdown == node_1_2nd_shutdown); - - nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_reestablish).unwrap(); - let node_0_2nd_shutdown = if recv_count > 0 { - let node_0_2nd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown).unwrap(); - node_0_2nd_shutdown - } else { - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown).unwrap(); - get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()) - }; - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_2nd_shutdown).unwrap(); - - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - - assert!(nodes[2].node.claim_funds(our_payment_preimage)); - check_added_monitors!(nodes[2], 1); - let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - assert_eq!(updates.update_fulfill_htlcs.len(), 1); - nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap(); - check_added_monitors!(nodes[1], 1); - let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false); - - assert!(updates_2.update_add_htlcs.is_empty()); - assert!(updates_2.update_fail_htlcs.is_empty()); - assert!(updates_2.update_fail_malformed_htlcs.is_empty()); - assert!(updates_2.update_fee.is_none()); - assert_eq!(updates_2.update_fulfill_htlcs.len(), 1); - nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]).unwrap(); - commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true); - - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentSent { ref payment_preimage } => { - assert_eq!(our_payment_preimage, *payment_preimage); - }, - _ => panic!("Unexpected event"), - } - - let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); - if recv_count > 0 { - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap(); - let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); - assert!(node_1_closing_signed.is_some()); - } - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - - nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); - let node_0_2nd_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id()); - nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); - if recv_count == 0 { - // If all closing_signeds weren't delivered we can just resume where we left off... - let node_1_2nd_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()); - - nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish).unwrap(); - let node_0_3rd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); - assert!(node_0_2nd_shutdown == node_0_3rd_shutdown); - - nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish).unwrap(); - let node_1_3rd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - assert!(node_1_3rd_shutdown == node_1_2nd_shutdown); - - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_3rd_shutdown).unwrap(); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_3rd_shutdown).unwrap(); - let node_0_2nd_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); - assert!(node_0_closing_signed == node_0_2nd_closing_signed); - - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed).unwrap(); - let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap(); - let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); - assert!(node_0_none.is_none()); - } else { - // If one node, however, received + responded with an identical closing_signed we end - // up erroring and node[0] will try to broadcast its own latest commitment transaction. - // There isn't really anything better we can do simply, but in the future we might - // explore storing a set of recently-closed channels that got disconnected during - // closing_signed and avoiding broadcasting local commitment txn for some timeout to - // give our counterparty enough time to (potentially) broadcast a cooperative closing - // transaction. - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - - if let Err(msgs::HandleError{action: Some(msgs::ErrorAction::SendErrorMessage{msg}), ..}) = - nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish) { - nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msg); - let msgs::ErrorMessage {ref channel_id, ..} = msg; - assert_eq!(*channel_id, chan_1.2); - } else { panic!("Needed SendErrorMessage close"); } - - // get_closing_signed_broadcast usually eats the BroadcastChannelUpdate for us and - // checks it, but in this case nodes[0] didn't ever get a chance to receive a - // closing_signed so we do it ourselves - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { ref msg } => { - assert_eq!(msg.contents.flags & 2, 2); - }, - _ => panic!("Unexpected event"), - } - } - - assert!(nodes[0].node.list_channels().is_empty()); - - assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1); - nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear(); - close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true); - assert!(nodes[1].node.list_channels().is_empty()); - assert!(nodes[2].node.list_channels().is_empty()); - } - - #[test] - fn test_shutdown_rebroadcast() { - do_test_shutdown_rebroadcast(0); - do_test_shutdown_rebroadcast(1); - do_test_shutdown_rebroadcast(2); - } - - #[test] - fn fake_network_test() { - // Simple test which builds a network of ChannelManagers, connects them to each other, and - // tests that payments get routed and transactions broadcast in semi-reasonable ways. - let nodes = create_network(4); - - // Create some initial channels - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); - let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3); - - // Rebalance the network a bit by relaying one payment through all the channels... - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000); - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000); - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000); - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000); - - // Send some more payments - send_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 1000000); - send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1], &nodes[0])[..], 1000000); - send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1])[..], 1000000); - - // Test failure packets - let payment_hash_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 1000000).1; - fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], payment_hash_1); - - // Add a new channel that skips 3 - let chan_4 = create_announced_chan_between_nodes(&nodes, 1, 3); - - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 1000000); - send_payment(&nodes[2], &vec!(&nodes[3])[..], 1000000); - send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000); - send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000); - send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000); - send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000); - send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000); - - // Do some rebalance loop payments, simultaneously - let mut hops = Vec::with_capacity(3); - hops.push(RouteHop { - pubkey: nodes[2].node.get_our_node_id(), - short_channel_id: chan_2.0.contents.short_channel_id, - fee_msat: 0, - cltv_expiry_delta: chan_3.0.contents.cltv_expiry_delta as u32 - }); - hops.push(RouteHop { - pubkey: nodes[3].node.get_our_node_id(), - short_channel_id: chan_3.0.contents.short_channel_id, - fee_msat: 0, - cltv_expiry_delta: chan_4.1.contents.cltv_expiry_delta as u32 - }); - hops.push(RouteHop { - pubkey: nodes[1].node.get_our_node_id(), - short_channel_id: chan_4.0.contents.short_channel_id, - fee_msat: 1000000, - cltv_expiry_delta: TEST_FINAL_CLTV, - }); - hops[1].fee_msat = chan_4.1.contents.fee_base_msat as u64 + chan_4.1.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000; - hops[0].fee_msat = chan_3.0.contents.fee_base_msat as u64 + chan_3.0.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000; - let payment_preimage_1 = send_along_route(&nodes[1], Route { hops }, &vec!(&nodes[2], &nodes[3], &nodes[1])[..], 1000000).0; - - let mut hops = Vec::with_capacity(3); - hops.push(RouteHop { - pubkey: nodes[3].node.get_our_node_id(), - short_channel_id: chan_4.0.contents.short_channel_id, - fee_msat: 0, - cltv_expiry_delta: chan_3.1.contents.cltv_expiry_delta as u32 - }); - hops.push(RouteHop { - pubkey: nodes[2].node.get_our_node_id(), - short_channel_id: chan_3.0.contents.short_channel_id, - fee_msat: 0, - cltv_expiry_delta: chan_2.1.contents.cltv_expiry_delta as u32 - }); - hops.push(RouteHop { - pubkey: nodes[1].node.get_our_node_id(), - short_channel_id: chan_2.0.contents.short_channel_id, - fee_msat: 1000000, - cltv_expiry_delta: TEST_FINAL_CLTV, - }); - hops[1].fee_msat = chan_2.1.contents.fee_base_msat as u64 + chan_2.1.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000; - hops[0].fee_msat = chan_3.1.contents.fee_base_msat as u64 + chan_3.1.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000; - let payment_hash_2 = send_along_route(&nodes[1], Route { hops }, &vec!(&nodes[3], &nodes[2], &nodes[1])[..], 1000000).1; - - // Claim the rebalances... - fail_payment(&nodes[1], &vec!(&nodes[3], &nodes[2], &nodes[1])[..], payment_hash_2); - claim_payment(&nodes[1], &vec!(&nodes[2], &nodes[3], &nodes[1])[..], payment_preimage_1); - - // Add a duplicate new channel from 2 to 4 - let chan_5 = create_announced_chan_between_nodes(&nodes, 1, 3); - - // Send some payments across both channels - let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0; - let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0; - let payment_preimage_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0; - - route_over_limit(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000); - - //TODO: Test that routes work again here as we've been notified that the channel is full - - claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_3); - claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_4); - claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_5); - - // Close down the channels... - close_channel(&nodes[0], &nodes[1], &chan_1.2, chan_1.3, true); - close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, false); - close_channel(&nodes[2], &nodes[3], &chan_3.2, chan_3.3, true); - close_channel(&nodes[1], &nodes[3], &chan_4.2, chan_4.3, false); - close_channel(&nodes[1], &nodes[3], &chan_5.2, chan_5.3, false); - } - - #[test] - fn duplicate_htlc_test() { - // Test that we accept duplicate payment_hash HTLCs across the network and that - // claiming/failing them are all separate and don't effect each other - let mut nodes = create_network(6); - - // Create some initial channels to route via 3 to 4/5 from 0/1/2 - create_announced_chan_between_nodes(&nodes, 0, 3); - create_announced_chan_between_nodes(&nodes, 1, 3); - create_announced_chan_between_nodes(&nodes, 2, 3); - create_announced_chan_between_nodes(&nodes, 3, 4); - create_announced_chan_between_nodes(&nodes, 3, 5); - - let (payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], 1000000); - - *nodes[0].network_payment_count.borrow_mut() -= 1; - assert_eq!(route_payment(&nodes[1], &vec!(&nodes[3])[..], 1000000).0, payment_preimage); - - *nodes[0].network_payment_count.borrow_mut() -= 1; - assert_eq!(route_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], 1000000).0, payment_preimage); - - claim_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], payment_preimage); - fail_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], payment_hash); - claim_payment(&nodes[1], &vec!(&nodes[3])[..], payment_preimage); - } - - #[derive(PartialEq)] - enum HTLCType { NONE, TIMEOUT, SUCCESS } - /// Tests that the given node has broadcast transactions for the given Channel - /// - /// First checks that the latest local commitment tx has been broadcast, unless an explicit - /// commitment_tx is provided, which may be used to test that a remote commitment tx was - /// broadcast and the revoked outputs were claimed. - /// - /// Next tests that there is (or is not) a transaction that spends the commitment transaction - /// that appears to be the type of HTLC transaction specified in has_htlc_tx. - /// - /// All broadcast transactions must be accounted for in one of the above three types of we'll - /// also fail. - fn test_txn_broadcast(node: &Node, chan: &(msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction), commitment_tx: Option, has_htlc_tx: HTLCType) -> Vec { - let mut node_txn = node.tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert!(node_txn.len() >= if commitment_tx.is_some() { 0 } else { 1 } + if has_htlc_tx == HTLCType::NONE { 0 } else { 1 }); - - let mut res = Vec::with_capacity(2); - node_txn.retain(|tx| { - if tx.input.len() == 1 && tx.input[0].previous_output.txid == chan.3.txid() { - check_spends!(tx, chan.3.clone()); - if commitment_tx.is_none() { - res.push(tx.clone()); - } - false - } else { true } - }); - if let Some(explicit_tx) = commitment_tx { - res.push(explicit_tx.clone()); - } - - assert_eq!(res.len(), 1); - - if has_htlc_tx != HTLCType::NONE { - node_txn.retain(|tx| { - if tx.input.len() == 1 && tx.input[0].previous_output.txid == res[0].txid() { - check_spends!(tx, res[0].clone()); - if has_htlc_tx == HTLCType::TIMEOUT { - assert!(tx.lock_time != 0); - } else { - assert!(tx.lock_time == 0); - } - res.push(tx.clone()); - false - } else { true } - }); - assert!(res.len() == 2 || res.len() == 3); - if res.len() == 3 { - assert_eq!(res[1], res[2]); - } - } - - assert!(node_txn.is_empty()); - res - } - - /// Tests that the given node has broadcast a claim transaction against the provided revoked - /// HTLC transaction. - fn test_revoked_htlc_claim_txn_broadcast(node: &Node, revoked_tx: Transaction) { - let mut node_txn = node.tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 1); - node_txn.retain(|tx| { - if tx.input.len() == 1 && tx.input[0].previous_output.txid == revoked_tx.txid() { - check_spends!(tx, revoked_tx.clone()); - false - } else { true } - }); - assert!(node_txn.is_empty()); - } - - fn check_preimage_claim(node: &Node, prev_txn: &Vec) -> Vec { - let mut node_txn = node.tx_broadcaster.txn_broadcasted.lock().unwrap(); - - assert!(node_txn.len() >= 1); - assert_eq!(node_txn[0].input.len(), 1); - let mut found_prev = false; - - for tx in prev_txn { - if node_txn[0].input[0].previous_output.txid == tx.txid() { - check_spends!(node_txn[0], tx.clone()); - assert!(node_txn[0].input[0].witness[2].len() > 106); // must spend an htlc output - assert_eq!(tx.input.len(), 1); // must spend a commitment tx - - found_prev = true; - break; - } - } - assert!(found_prev); - - let mut res = Vec::new(); - mem::swap(&mut *node_txn, &mut res); - res - } - - fn get_announce_close_broadcast_events(nodes: &Vec, a: usize, b: usize) { - let events_1 = nodes[a].node.get_and_clear_pending_msg_events(); - assert_eq!(events_1.len(), 1); - let as_update = match events_1[0] { - MessageSendEvent::BroadcastChannelUpdate { ref msg } => { - msg.clone() - }, - _ => panic!("Unexpected event"), - }; - - let events_2 = nodes[b].node.get_and_clear_pending_msg_events(); - assert_eq!(events_2.len(), 1); - let bs_update = match events_2[0] { - MessageSendEvent::BroadcastChannelUpdate { ref msg } => { - msg.clone() - }, - _ => panic!("Unexpected event"), - }; - - for node in nodes { - node.router.handle_channel_update(&as_update).unwrap(); - node.router.handle_channel_update(&bs_update).unwrap(); - } - } - - macro_rules! expect_pending_htlcs_forwardable { - ($node: expr) => {{ - let events = $node.node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PendingHTLCsForwardable { .. } => { }, - _ => panic!("Unexpected event"), - }; - $node.node.channel_state.lock().unwrap().next_forward = Instant::now(); - $node.node.process_pending_htlc_forwards(); - }} - } - - fn do_channel_reserve_test(test_recv: bool) { - use util::rng; - use std::sync::atomic::Ordering; - use ln::msgs::HandleError; - - macro_rules! get_channel_value_stat { - ($node: expr, $channel_id: expr) => {{ - let chan_lock = $node.node.channel_state.lock().unwrap(); - let chan = chan_lock.by_id.get(&$channel_id).unwrap(); - chan.get_value_stat() - }} - } - - let mut nodes = create_network(3); - let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1900, 1001); - let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 1900, 1001); - - let mut stat01 = get_channel_value_stat!(nodes[0], chan_1.2); - let mut stat11 = get_channel_value_stat!(nodes[1], chan_1.2); - - let mut stat12 = get_channel_value_stat!(nodes[1], chan_2.2); - let mut stat22 = get_channel_value_stat!(nodes[2], chan_2.2); - - macro_rules! get_route_and_payment_hash { - ($recv_value: expr) => {{ - let route = nodes[0].router.get_route(&nodes.last().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV).unwrap(); - let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[0]); - (route, payment_hash, payment_preimage) - }} - }; - - macro_rules! expect_forward { - ($node: expr) => {{ - let mut events = $node.node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - check_added_monitors!($node, 1); - let payment_event = SendEvent::from_event(events.remove(0)); - payment_event - }} - } - - macro_rules! expect_payment_received { - ($node: expr, $expected_payment_hash: expr, $expected_recv_value: expr) => { - let events = $node.node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentReceived { ref payment_hash, amt } => { - assert_eq!($expected_payment_hash, *payment_hash); - assert_eq!($expected_recv_value, amt); - }, - _ => panic!("Unexpected event"), - } - } - }; - - let feemsat = 239; // somehow we know? - let total_fee_msat = (nodes.len() - 2) as u64 * 239; - - let recv_value_0 = stat01.their_max_htlc_value_in_flight_msat - total_fee_msat; - - // attempt to send amt_msat > their_max_htlc_value_in_flight_msat - { - let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_0 + 1); - assert!(route.hops.iter().rev().skip(1).all(|h| h.fee_msat == feemsat)); - let err = nodes[0].node.send_payment(route, our_payment_hash).err().unwrap(); - match err { - APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our max HTLC value in flight"), - _ => panic!("Unknown error variants"), - } - } - - let mut htlc_id = 0; - // channel reserve is bigger than their_max_htlc_value_in_flight_msat so loop to deplete - // nodes[0]'s wealth - loop { - let amt_msat = recv_value_0 + total_fee_msat; - if stat01.value_to_self_msat - amt_msat < stat01.channel_reserve_msat { - break; - } - send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_0); - htlc_id += 1; - - let (stat01_, stat11_, stat12_, stat22_) = ( - get_channel_value_stat!(nodes[0], chan_1.2), - get_channel_value_stat!(nodes[1], chan_1.2), - get_channel_value_stat!(nodes[1], chan_2.2), - get_channel_value_stat!(nodes[2], chan_2.2), - ); - - assert_eq!(stat01_.value_to_self_msat, stat01.value_to_self_msat - amt_msat); - assert_eq!(stat11_.value_to_self_msat, stat11.value_to_self_msat + amt_msat); - assert_eq!(stat12_.value_to_self_msat, stat12.value_to_self_msat - (amt_msat - feemsat)); - assert_eq!(stat22_.value_to_self_msat, stat22.value_to_self_msat + (amt_msat - feemsat)); - stat01 = stat01_; stat11 = stat11_; stat12 = stat12_; stat22 = stat22_; - } - - { - let recv_value = stat01.value_to_self_msat - stat01.channel_reserve_msat - total_fee_msat; - // attempt to get channel_reserve violation - let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value + 1); - let err = nodes[0].node.send_payment(route.clone(), our_payment_hash).err().unwrap(); - match err { - APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our reserve value"), - _ => panic!("Unknown error variants"), - } - } - - // adding pending output - let recv_value_1 = (stat01.value_to_self_msat - stat01.channel_reserve_msat - total_fee_msat)/2; - let amt_msat_1 = recv_value_1 + total_fee_msat; - - let (route_1, our_payment_hash_1, our_payment_preimage_1) = get_route_and_payment_hash!(recv_value_1); - let payment_event_1 = { - nodes[0].node.send_payment(route_1, our_payment_hash_1).unwrap(); - check_added_monitors!(nodes[0], 1); - - let mut events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - SendEvent::from_event(events.remove(0)) - }; - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]).unwrap(); - - // channel reserve test with htlc pending output > 0 - let recv_value_2 = stat01.value_to_self_msat - amt_msat_1 - stat01.channel_reserve_msat - total_fee_msat; - { - let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_2 + 1); - match nodes[0].node.send_payment(route, our_payment_hash).err().unwrap() { - APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our reserve value"), - _ => panic!("Unknown error variants"), - } - } - - { - // test channel_reserve test on nodes[1] side - let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_2 + 1); - - // Need to manually create update_add_htlc message to go around the channel reserve check in send_htlc() - let secp_ctx = Secp256k1::new(); - let session_priv = SecretKey::from_slice(&secp_ctx, &{ - let mut session_key = [0; 32]; - rng::fill_bytes(&mut session_key); - session_key - }).expect("RNG is bad!"); - - let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1; - let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route, &session_priv).unwrap(); - let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route, cur_height).unwrap(); - let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &our_payment_hash); - let msg = msgs::UpdateAddHTLC { - channel_id: chan_1.2, - htlc_id, - amount_msat: htlc_msat, - payment_hash: our_payment_hash, - cltv_expiry: htlc_cltv, - onion_routing_packet: onion_packet, - }; - - if test_recv { - let err = nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg).err().unwrap(); - match err { - HandleError{err, .. } => assert_eq!(err, "Remote HTLC add would put them over their reserve value"), - } - // If we send a garbage message, the channel should get closed, making the rest of this test case fail. - assert_eq!(nodes[1].node.list_channels().len(), 1); - assert_eq!(nodes[1].node.list_channels().len(), 1); - let channel_close_broadcast = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(channel_close_broadcast.len(), 1); - match channel_close_broadcast[0] { - MessageSendEvent::BroadcastChannelUpdate { ref msg } => { - assert_eq!(msg.contents.flags & 2, 2); - }, - _ => panic!("Unexpected event"), - } - return; - } - } - - // split the rest to test holding cell - let recv_value_21 = recv_value_2/2; - let recv_value_22 = recv_value_2 - recv_value_21 - total_fee_msat; - { - let stat = get_channel_value_stat!(nodes[0], chan_1.2); - assert_eq!(stat.value_to_self_msat - (stat.pending_outbound_htlcs_amount_msat + recv_value_21 + recv_value_22 + total_fee_msat + total_fee_msat), stat.channel_reserve_msat); - } - - // now see if they go through on both sides - let (route_21, our_payment_hash_21, our_payment_preimage_21) = get_route_and_payment_hash!(recv_value_21); - // but this will stuck in the holding cell - nodes[0].node.send_payment(route_21, our_payment_hash_21).unwrap(); - check_added_monitors!(nodes[0], 0); - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 0); - - // test with outbound holding cell amount > 0 - { - let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_22+1); - match nodes[0].node.send_payment(route, our_payment_hash).err().unwrap() { - APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our reserve value"), - _ => panic!("Unknown error variants"), - } - } - - let (route_22, our_payment_hash_22, our_payment_preimage_22) = get_route_and_payment_hash!(recv_value_22); - // this will also stuck in the holding cell - nodes[0].node.send_payment(route_22, our_payment_hash_22).unwrap(); - check_added_monitors!(nodes[0], 0); - assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - - // flush the pending htlc - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event_1.commitment_msg).unwrap(); - let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - check_added_monitors!(nodes[1], 1); - - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); - check_added_monitors!(nodes[0], 1); - let commitment_update_2 = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_commitment_signed).unwrap(); - let bs_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[0], 1); - - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[1], 1); - - expect_pending_htlcs_forwardable!(nodes[1]); - - let ref payment_event_11 = expect_forward!(nodes[1]); - nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_11.msgs[0]).unwrap(); - commitment_signed_dance!(nodes[2], nodes[1], payment_event_11.commitment_msg, false); - - expect_pending_htlcs_forwardable!(nodes[2]); - expect_payment_received!(nodes[2], our_payment_hash_1, recv_value_1); - - // flush the htlcs in the holding cell - assert_eq!(commitment_update_2.update_add_htlcs.len(), 2); - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[0]).unwrap(); - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[1]).unwrap(); - commitment_signed_dance!(nodes[1], nodes[0], &commitment_update_2.commitment_signed, false); - expect_pending_htlcs_forwardable!(nodes[1]); - - let ref payment_event_3 = expect_forward!(nodes[1]); - assert_eq!(payment_event_3.msgs.len(), 2); - nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[0]).unwrap(); - nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[1]).unwrap(); - - commitment_signed_dance!(nodes[2], nodes[1], &payment_event_3.commitment_msg, false); - expect_pending_htlcs_forwardable!(nodes[2]); - - let events = nodes[2].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 2); - match events[0] { - Event::PaymentReceived { ref payment_hash, amt } => { - assert_eq!(our_payment_hash_21, *payment_hash); - assert_eq!(recv_value_21, amt); - }, - _ => panic!("Unexpected event"), - } - match events[1] { - Event::PaymentReceived { ref payment_hash, amt } => { - assert_eq!(our_payment_hash_22, *payment_hash); - assert_eq!(recv_value_22, amt); - }, - _ => panic!("Unexpected event"), - } - - claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_1); - claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_21); - claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_22); - - let expected_value_to_self = stat01.value_to_self_msat - (recv_value_1 + total_fee_msat) - (recv_value_21 + total_fee_msat) - (recv_value_22 + total_fee_msat); - let stat0 = get_channel_value_stat!(nodes[0], chan_1.2); - assert_eq!(stat0.value_to_self_msat, expected_value_to_self); - assert_eq!(stat0.value_to_self_msat, stat0.channel_reserve_msat); - - let stat2 = get_channel_value_stat!(nodes[2], chan_2.2); - assert_eq!(stat2.value_to_self_msat, stat22.value_to_self_msat + recv_value_1 + recv_value_21 + recv_value_22); - } - - #[test] - fn channel_reserve_test() { - do_channel_reserve_test(false); - do_channel_reserve_test(true); - } - - #[test] - fn channel_monitor_network_test() { - // Simple test which builds a network of ChannelManagers, connects them to each other, and - // tests that ChannelMonitor is able to recover from various states. - let nodes = create_network(5); - - // Create some initial channels - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); - let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3); - let chan_4 = create_announced_chan_between_nodes(&nodes, 3, 4); - - // Rebalance the network a bit by relaying one payment through all the channels... - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000); - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000); - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000); - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000); - - // Simple case with no pending HTLCs: - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), true); - { - let mut node_txn = test_txn_broadcast(&nodes[1], &chan_1, None, HTLCType::NONE); - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn.drain(..).next().unwrap()] }, 1); - test_txn_broadcast(&nodes[0], &chan_1, None, HTLCType::NONE); - } - get_announce_close_broadcast_events(&nodes, 0, 1); - assert_eq!(nodes[0].node.list_channels().len(), 0); - assert_eq!(nodes[1].node.list_channels().len(), 1); - - // One pending HTLC is discarded by the force-close: - let payment_preimage_1 = route_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 3000000).0; - - // Simple case of one pending HTLC to HTLC-Timeout - nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), true); - { - let mut node_txn = test_txn_broadcast(&nodes[1], &chan_2, None, HTLCType::TIMEOUT); - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn.drain(..).next().unwrap()] }, 1); - test_txn_broadcast(&nodes[2], &chan_2, None, HTLCType::NONE); - } - get_announce_close_broadcast_events(&nodes, 1, 2); - assert_eq!(nodes[1].node.list_channels().len(), 0); - assert_eq!(nodes[2].node.list_channels().len(), 1); - - macro_rules! claim_funds { - ($node: expr, $prev_node: expr, $preimage: expr) => { - { - assert!($node.node.claim_funds($preimage)); - check_added_monitors!($node, 1); - - let events = $node.node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, .. } } => { - assert!(update_add_htlcs.is_empty()); - assert!(update_fail_htlcs.is_empty()); - assert_eq!(*node_id, $prev_node.node.get_our_node_id()); - }, - _ => panic!("Unexpected event"), - }; - } - } - } - - // nodes[3] gets the preimage, but nodes[2] already disconnected, resulting in a nodes[2] - // HTLC-Timeout and a nodes[3] claim against it (+ its own announces) - nodes[2].node.peer_disconnected(&nodes[3].node.get_our_node_id(), true); - { - let node_txn = test_txn_broadcast(&nodes[2], &chan_3, None, HTLCType::TIMEOUT); - - // Claim the payment on nodes[3], giving it knowledge of the preimage - claim_funds!(nodes[3], nodes[2], payment_preimage_1); - - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[3].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[0].clone()] }, 1); - - check_preimage_claim(&nodes[3], &node_txn); - } - get_announce_close_broadcast_events(&nodes, 2, 3); - assert_eq!(nodes[2].node.list_channels().len(), 0); - assert_eq!(nodes[3].node.list_channels().len(), 1); - - { // Cheat and reset nodes[4]'s height to 1 - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[4].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![] }, 1); - } - - assert_eq!(nodes[3].node.latest_block_height.load(Ordering::Acquire), 1); - assert_eq!(nodes[4].node.latest_block_height.load(Ordering::Acquire), 1); - // One pending HTLC to time out: - let payment_preimage_2 = route_payment(&nodes[3], &vec!(&nodes[4])[..], 3000000).0; - // CLTV expires at TEST_FINAL_CLTV + 1 (current height) + 1 (added in send_payment for - // buffer space). - - { - let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[3].chain_monitor.block_connected_checked(&header, 2, &Vec::new()[..], &[0; 0]); - for i in 3..TEST_FINAL_CLTV + 2 + HTLC_FAIL_TIMEOUT_BLOCKS + 1 { - header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[3].chain_monitor.block_connected_checked(&header, i, &Vec::new()[..], &[0; 0]); - } - - let node_txn = test_txn_broadcast(&nodes[3], &chan_4, None, HTLCType::TIMEOUT); - - // Claim the payment on nodes[4], giving it knowledge of the preimage - claim_funds!(nodes[4], nodes[3], payment_preimage_2); - - header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[4].chain_monitor.block_connected_checked(&header, 2, &Vec::new()[..], &[0; 0]); - for i in 3..TEST_FINAL_CLTV + 2 - CLTV_CLAIM_BUFFER + 1 { - header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[4].chain_monitor.block_connected_checked(&header, i, &Vec::new()[..], &[0; 0]); - } - - test_txn_broadcast(&nodes[4], &chan_4, None, HTLCType::SUCCESS); - - header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[4].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[0].clone()] }, TEST_FINAL_CLTV - 5); - - check_preimage_claim(&nodes[4], &node_txn); - } - get_announce_close_broadcast_events(&nodes, 3, 4); - assert_eq!(nodes[3].node.list_channels().len(), 0); - assert_eq!(nodes[4].node.list_channels().len(), 0); - } - - #[test] - fn test_justice_tx() { - // Test justice txn built on revoked HTLC-Success tx, against both sides - - let nodes = create_network(2); - // Create some new channels: - let chan_5 = create_announced_chan_between_nodes(&nodes, 0, 1); - - // A pending HTLC which will be revoked: - let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; - // Get the will-be-revoked local txn from nodes[0] - let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.iter().next().unwrap().1.last_local_commitment_txn.clone(); - assert_eq!(revoked_local_txn.len(), 2); // First commitment tx, then HTLC tx - assert_eq!(revoked_local_txn[0].input.len(), 1); - assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_5.3.txid()); - assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to 0 are present - assert_eq!(revoked_local_txn[1].input.len(), 1); - assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid()); - assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout - // Revoke the old state - claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_3); - - { - let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - { - let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 3); - assert_eq!(node_txn.pop().unwrap(), node_txn[0]); // An outpoint registration will result in a 2nd block_connected - assert_eq!(node_txn[0].input.len(), 2); // We should claim the revoked output and the HTLC output - - check_spends!(node_txn[0], revoked_local_txn[0].clone()); - node_txn.swap_remove(0); - } - test_txn_broadcast(&nodes[1], &chan_5, None, HTLCType::NONE); - - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - let node_txn = test_txn_broadcast(&nodes[0], &chan_5, Some(revoked_local_txn[0].clone()), HTLCType::TIMEOUT); - header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[1].clone()] }, 1); - test_revoked_htlc_claim_txn_broadcast(&nodes[1], node_txn[1].clone()); - } - get_announce_close_broadcast_events(&nodes, 0, 1); - - assert_eq!(nodes[0].node.list_channels().len(), 0); - assert_eq!(nodes[1].node.list_channels().len(), 0); - - // We test justice_tx build by A on B's revoked HTLC-Success tx - // Create some new channels: - let chan_6 = create_announced_chan_between_nodes(&nodes, 0, 1); - - // A pending HTLC which will be revoked: - let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; - // Get the will-be-revoked local txn from B - let revoked_local_txn = nodes[1].node.channel_state.lock().unwrap().by_id.iter().next().unwrap().1.last_local_commitment_txn.clone(); - assert_eq!(revoked_local_txn.len(), 1); // Only commitment tx - assert_eq!(revoked_local_txn[0].input.len(), 1); - assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_6.3.txid()); - assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to A are present - // Revoke the old state - claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_4); - { - let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - { - let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 3); - assert_eq!(node_txn.pop().unwrap(), node_txn[0]); // An outpoint registration will result in a 2nd block_connected - assert_eq!(node_txn[0].input.len(), 1); // We claim the received HTLC output - - check_spends!(node_txn[0], revoked_local_txn[0].clone()); - node_txn.swap_remove(0); - } - test_txn_broadcast(&nodes[0], &chan_6, None, HTLCType::NONE); - - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - let node_txn = test_txn_broadcast(&nodes[1], &chan_6, Some(revoked_local_txn[0].clone()), HTLCType::SUCCESS); - header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[1].clone()] }, 1); - test_revoked_htlc_claim_txn_broadcast(&nodes[0], node_txn[1].clone()); - } - get_announce_close_broadcast_events(&nodes, 0, 1); - assert_eq!(nodes[0].node.list_channels().len(), 0); - assert_eq!(nodes[1].node.list_channels().len(), 0); - } - - #[test] - fn revoked_output_claim() { - // Simple test to ensure a node will claim a revoked output when a stale remote commitment - // transaction is broadcast by its counterparty - let nodes = create_network(2); - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - // node[0] is gonna to revoke an old state thus node[1] should be able to claim the revoked output - let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); - assert_eq!(revoked_local_txn.len(), 1); - // Only output is the full channel value back to nodes[0]: - assert_eq!(revoked_local_txn[0].output.len(), 1); - // Send a payment through, updating everyone's latest commitment txn - send_payment(&nodes[0], &vec!(&nodes[1])[..], 5000000); - - // Inform nodes[1] that nodes[0] broadcast a stale tx - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 3); // nodes[1] will broadcast justice tx twice, and its own local state once - - assert_eq!(node_txn[0], node_txn[2]); - - check_spends!(node_txn[0], revoked_local_txn[0].clone()); - check_spends!(node_txn[1], chan_1.3.clone()); - - // Inform nodes[0] that a watchtower cheated on its behalf, so it will force-close the chan - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - get_announce_close_broadcast_events(&nodes, 0, 1); - } - - #[test] - fn claim_htlc_outputs_shared_tx() { - // Node revoked old state, htlcs haven't time out yet, claim them in shared justice tx - let nodes = create_network(2); - - // Create some new channel: - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - - // Rebalance the network to generate htlc in the two directions - send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000); - // node[0] is gonna to revoke an old state thus node[1] should be able to claim both offered/received HTLC outputs on top of commitment tx - let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; - let (_payment_preimage_2, payment_hash_2) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000); - - // Get the will-be-revoked local txn from node[0] - let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); - assert_eq!(revoked_local_txn.len(), 2); // commitment tx + 1 HTLC-Timeout tx - assert_eq!(revoked_local_txn[0].input.len(), 1); - assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid()); - assert_eq!(revoked_local_txn[1].input.len(), 1); - assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid()); - assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout - check_spends!(revoked_local_txn[1], revoked_local_txn[0].clone()); - - //Revoke the old state - claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1); - - { - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - - let events = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentFailed { payment_hash, .. } => { - assert_eq!(payment_hash, payment_hash_2); - }, - _ => panic!("Unexpected event"), - } - - let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 4); - - assert_eq!(node_txn[0].input.len(), 3); // Claim the revoked output + both revoked HTLC outputs - check_spends!(node_txn[0], revoked_local_txn[0].clone()); - - assert_eq!(node_txn[0], node_txn[3]); // justice tx is duplicated due to block re-scanning - - let mut witness_lens = BTreeSet::new(); - witness_lens.insert(node_txn[0].input[0].witness.last().unwrap().len()); - witness_lens.insert(node_txn[0].input[1].witness.last().unwrap().len()); - witness_lens.insert(node_txn[0].input[2].witness.last().unwrap().len()); - assert_eq!(witness_lens.len(), 3); - assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local - assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC - assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC - - // Next nodes[1] broadcasts its current local tx state: - assert_eq!(node_txn[1].input.len(), 1); - assert_eq!(node_txn[1].input[0].previous_output.txid, chan_1.3.txid()); //Spending funding tx unique txouput, tx broadcasted by ChannelManager - - assert_eq!(node_txn[2].input.len(), 1); - let witness_script = node_txn[2].clone().input[0].witness.pop().unwrap(); - assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output - assert_eq!(node_txn[2].input[0].previous_output.txid, node_txn[1].txid()); - assert_ne!(node_txn[2].input[0].previous_output.txid, node_txn[0].input[0].previous_output.txid); - assert_ne!(node_txn[2].input[0].previous_output.txid, node_txn[0].input[1].previous_output.txid); - } - get_announce_close_broadcast_events(&nodes, 0, 1); - assert_eq!(nodes[0].node.list_channels().len(), 0); - assert_eq!(nodes[1].node.list_channels().len(), 0); - } - - #[test] - fn claim_htlc_outputs_single_tx() { - // Node revoked old state, htlcs have timed out, claim each of them in separated justice tx - let nodes = create_network(2); - - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - - // Rebalance the network to generate htlc in the two directions - send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000); - // node[0] is gonna to revoke an old state thus node[1] should be able to claim both offered/received HTLC outputs on top of commitment tx, but this - // time as two different claim transactions as we're gonna to timeout htlc with given a high current height - let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; - let (_payment_preimage_2, payment_hash_2) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000); - - // Get the will-be-revoked local txn from node[0] - let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); - - //Revoke the old state - claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1); - - { - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 200); - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 200); - - let events = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentFailed { payment_hash, .. } => { - assert_eq!(payment_hash, payment_hash_2); - }, - _ => panic!("Unexpected event"), - } - - let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 12); // ChannelManager : 2, ChannelMontitor: 8 (1 standard revoked output, 2 revocation htlc tx, 1 local commitment tx + 1 htlc timeout tx) * 2 (block-rescan) - - assert_eq!(node_txn[0], node_txn[7]); - assert_eq!(node_txn[1], node_txn[8]); - assert_eq!(node_txn[2], node_txn[9]); - assert_eq!(node_txn[3], node_txn[10]); - assert_eq!(node_txn[4], node_txn[11]); - assert_eq!(node_txn[3], node_txn[5]); //local commitment tx + htlc timeout tx broadcated by ChannelManger - assert_eq!(node_txn[4], node_txn[6]); - - assert_eq!(node_txn[0].input.len(), 1); - assert_eq!(node_txn[1].input.len(), 1); - assert_eq!(node_txn[2].input.len(), 1); - - let mut revoked_tx_map = HashMap::new(); - revoked_tx_map.insert(revoked_local_txn[0].txid(), revoked_local_txn[0].clone()); - node_txn[0].verify(&revoked_tx_map).unwrap(); - node_txn[1].verify(&revoked_tx_map).unwrap(); - node_txn[2].verify(&revoked_tx_map).unwrap(); - - let mut witness_lens = BTreeSet::new(); - witness_lens.insert(node_txn[0].input[0].witness.last().unwrap().len()); - witness_lens.insert(node_txn[1].input[0].witness.last().unwrap().len()); - witness_lens.insert(node_txn[2].input[0].witness.last().unwrap().len()); - assert_eq!(witness_lens.len(), 3); - assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local - assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC - assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC - - assert_eq!(node_txn[3].input.len(), 1); - check_spends!(node_txn[3], chan_1.3.clone()); - - assert_eq!(node_txn[4].input.len(), 1); - let witness_script = node_txn[4].input[0].witness.last().unwrap(); - assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output - assert_eq!(node_txn[4].input[0].previous_output.txid, node_txn[3].txid()); - assert_ne!(node_txn[4].input[0].previous_output.txid, node_txn[0].input[0].previous_output.txid); - assert_ne!(node_txn[4].input[0].previous_output.txid, node_txn[1].input[0].previous_output.txid); - } - get_announce_close_broadcast_events(&nodes, 0, 1); - assert_eq!(nodes[0].node.list_channels().len(), 0); - assert_eq!(nodes[1].node.list_channels().len(), 0); - } - - #[test] - fn test_htlc_on_chain_success() { - // Test that in case of an unilateral close onchain, we detect the state of output thanks to - // ChainWatchInterface and pass the preimage backward accordingly. So here we test that ChannelManager is - // broadcasting the right event to other nodes in payment path. - // A --------------------> B ----------------------> C (preimage) - // First, C should claim the HTLC output via HTLC-Success when its own latest local - // commitment transaction was broadcast. - // Then, B should learn the preimage from said transactions, attempting to claim backwards - // towards B. - // B should be able to claim via preimage if A then broadcasts its local tx. - // Finally, when A sees B's latest local commitment transaction it should be able to claim - // the HTLC output via the preimage it learned (which, once confirmed should generate a - // PaymentSent event). - - let nodes = create_network(3); - - // Create some initial channels - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); - - // Rebalance the network a bit by relaying one payment through all the channels... - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000); - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000); - - let (our_payment_preimage, _payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000); - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42}; - - // Broadcast legit commitment tx from C on B's chain - // Broadcast HTLC Success transation by C on received output from C's commitment tx on B's chain - let commitment_tx = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone(); - assert_eq!(commitment_tx.len(), 1); - check_spends!(commitment_tx[0], chan_2.3.clone()); - nodes[2].node.claim_funds(our_payment_preimage); - check_added_monitors!(nodes[2], 1); - let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert_eq!(updates.update_fulfill_htlcs.len(), 1); - - nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1); - let events = nodes[2].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx), ChannelMonitor : 2 (2 * HTLC-Success tx) - assert_eq!(node_txn.len(), 3); - assert_eq!(node_txn[1], commitment_tx[0]); - assert_eq!(node_txn[0], node_txn[2]); - check_spends!(node_txn[0], commitment_tx[0].clone()); - assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); - assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output - assert_eq!(node_txn[0].lock_time, 0); - - // Verify that B's ChannelManager is able to extract preimage from HTLC Success tx and pass it backward - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: node_txn}, 1); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - { - let mut added_monitors = nodes[1].chan_monitor.added_monitors.lock().unwrap(); - assert_eq!(added_monitors.len(), 1); - assert_eq!(added_monitors[0].0.txid, chan_1.3.txid()); - added_monitors.clear(); - } - assert_eq!(events.len(), 2); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - match events[1] { - MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => { - assert!(update_add_htlcs.is_empty()); - assert!(update_fail_htlcs.is_empty()); - assert_eq!(update_fulfill_htlcs.len(), 1); - assert!(update_fail_malformed_htlcs.is_empty()); - assert_eq!(nodes[0].node.get_our_node_id(), *node_id); - }, - _ => panic!("Unexpected event"), - }; - { - // nodes[1] now broadcasts its own local state as a fallback, suggesting an alternate - // commitment transaction with a corresponding HTLC-Timeout transaction, as well as a - // timeout-claim of the output that nodes[2] just claimed via success. - let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 1 (timeout tx) * 2 (block-rescan) - assert_eq!(node_txn.len(), 4); - assert_eq!(node_txn[0], node_txn[3]); - check_spends!(node_txn[0], commitment_tx[0].clone()); - assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); - assert_ne!(node_txn[0].lock_time, 0); - assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment - check_spends!(node_txn[1], chan_2.3.clone()); - check_spends!(node_txn[2], node_txn[1].clone()); - assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), 71); - assert_eq!(node_txn[2].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); - assert!(node_txn[2].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output - assert_ne!(node_txn[2].lock_time, 0); - node_txn.clear(); - } - - // Broadcast legit commitment tx from A on B's chain - // Broadcast preimage tx by B on offered output from A commitment tx on A's chain - let commitment_tx = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); - check_spends!(commitment_tx[0], chan_1.3.clone()); - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx), ChannelMonitor : 1 (HTLC-Success) * 2 (block-rescan) - assert_eq!(node_txn.len(), 3); - assert_eq!(node_txn[0], node_txn[2]); - check_spends!(node_txn[0], commitment_tx[0].clone()); - assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); - assert_eq!(node_txn[0].lock_time, 0); - assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment - check_spends!(node_txn[1], chan_1.3.clone()); - assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), 71); - // We don't bother to check that B can claim the HTLC output on its commitment tx here as - // we already checked the same situation with A. - - // Verify that A's ChannelManager is able to extract preimage from preimage tx and generate PaymentSent - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone(), node_txn[0].clone()] }, 1); - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentSent { payment_preimage } => { - assert_eq!(payment_preimage, our_payment_preimage); - }, - _ => panic!("Unexpected event"), - } - let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 1 (HTLC-Timeout tx) * 2 (block-rescan) - assert_eq!(node_txn.len(), 4); - assert_eq!(node_txn[0], node_txn[3]); - check_spends!(node_txn[0], commitment_tx[0].clone()); - assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); - assert_ne!(node_txn[0].lock_time, 0); - assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output - check_spends!(node_txn[1], chan_1.3.clone()); - check_spends!(node_txn[2], node_txn[1].clone()); - assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), 71); - assert_eq!(node_txn[2].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); - assert!(node_txn[2].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output - assert_ne!(node_txn[2].lock_time, 0); - } - - #[test] - fn test_htlc_on_chain_timeout() { - // Test that in case of an unilateral close onchain, we detect the state of output thanks to - // ChainWatchInterface and timeout the HTLC bacward accordingly. So here we test that ChannelManager is - // broadcasting the right event to other nodes in payment path. - // A ------------------> B ----------------------> C (timeout) - // B's commitment tx C's commitment tx - // \ \ - // B's HTLC timeout tx B's timeout tx - - let nodes = create_network(3); - - // Create some intial channels - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); - - // Rebalance the network a bit by relaying one payment thorugh all the channels... - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000); - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000); - - let (_payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000); - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42}; - - // Brodacast legit commitment tx from C on B's chain - let commitment_tx = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone(); - check_spends!(commitment_tx[0], chan_2.3.clone()); - nodes[2].node.fail_htlc_backwards(&payment_hash, 0); - { - let mut added_monitors = nodes[2].chan_monitor.added_monitors.lock().unwrap(); - assert_eq!(added_monitors.len(), 1); - added_monitors.clear(); - } - let events = nodes[2].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, .. } } => { - assert!(update_add_htlcs.is_empty()); - assert!(!update_fail_htlcs.is_empty()); - assert!(update_fulfill_htlcs.is_empty()); - assert!(update_fail_malformed_htlcs.is_empty()); - assert_eq!(nodes[1].node.get_our_node_id(), *node_id); - }, - _ => panic!("Unexpected event"), - }; - nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1); - let events = nodes[2].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {}, - _ => panic!("Unexpected event"), - } - let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx) - assert_eq!(node_txn.len(), 1); - check_spends!(node_txn[0], chan_2.3.clone()); - assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), 71); - - // Broadcast timeout transaction by B on received output fron C's commitment tx on B's chain - // Verify that B's ChannelManager is able to detect that HTLC is timeout by its own tx and react backward in consequence - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 200); - let timeout_tx; - { - let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 8); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 6 (HTLC-Timeout tx, commitment tx, timeout tx) * 2 (block-rescan) - assert_eq!(node_txn[0], node_txn[5]); - assert_eq!(node_txn[1], node_txn[6]); - assert_eq!(node_txn[2], node_txn[7]); - check_spends!(node_txn[0], commitment_tx[0].clone()); - assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); - check_spends!(node_txn[1], chan_2.3.clone()); - check_spends!(node_txn[2], node_txn[1].clone()); - assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), 71); - assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); - check_spends!(node_txn[3], chan_2.3.clone()); - check_spends!(node_txn[4], node_txn[3].clone()); - assert_eq!(node_txn[3].input[0].witness.clone().last().unwrap().len(), 71); - assert_eq!(node_txn[4].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); - timeout_tx = node_txn[0].clone(); - node_txn.clear(); - } - - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![timeout_tx]}, 1); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - check_added_monitors!(nodes[1], 1); - assert_eq!(events.len(), 2); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {}, - _ => panic!("Unexpected event"), - } - match events[1] { - MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => { - assert!(update_add_htlcs.is_empty()); - assert!(!update_fail_htlcs.is_empty()); - assert!(update_fulfill_htlcs.is_empty()); - assert!(update_fail_malformed_htlcs.is_empty()); - assert_eq!(nodes[0].node.get_our_node_id(), *node_id); - }, - _ => panic!("Unexpected event"), - }; - let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // Well... here we detect our own htlc_timeout_tx so no tx to be generated - assert_eq!(node_txn.len(), 0); - - // Broadcast legit commitment tx from B on A's chain - let commitment_tx = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); - check_spends!(commitment_tx[0], chan_1.3.clone()); - - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 200); - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {}, - _ => panic!("Unexpected event"), - } - let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 2 (timeout tx) * 2 block-rescan - assert_eq!(node_txn.len(), 4); - assert_eq!(node_txn[0], node_txn[3]); - check_spends!(node_txn[0], commitment_tx[0].clone()); - assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); - check_spends!(node_txn[1], chan_1.3.clone()); - check_spends!(node_txn[2], node_txn[1].clone()); - assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), 71); - assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); - } - - #[test] - fn test_simple_commitment_revoked_fail_backward() { - // Test that in case of a revoked commitment tx, we detect the resolution of output by justice tx - // and fail backward accordingly. - - let nodes = create_network(3); - - // Create some initial channels - create_announced_chan_between_nodes(&nodes, 0, 1); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); - - let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000); - // Get the will-be-revoked local txn from nodes[2] - let revoked_local_txn = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone(); - // Revoke the old state - claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage); - - route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000); - - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42}; - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - check_added_monitors!(nodes[1], 1); - assert_eq!(events.len(), 2); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {}, - _ => panic!("Unexpected event"), - } - match events[1] { - MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref commitment_signed, .. } } => { - assert!(update_add_htlcs.is_empty()); - assert_eq!(update_fail_htlcs.len(), 1); - assert!(update_fulfill_htlcs.is_empty()); - assert!(update_fail_malformed_htlcs.is_empty()); - assert_eq!(nodes[0].node.get_our_node_id(), *node_id); - - nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]).unwrap(); - commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true); - - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentFailed { .. } => {}, - _ => panic!("Unexpected event"), - } - }, - _ => panic!("Unexpected event"), - } - } - - fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool) { - // Test that if our counterparty broadcasts a revoked commitment transaction we fail all - // pending HTLCs on that channel backwards even if the HTLCs aren't present in our latest - // commitment transaction anymore. - // To do this, we have the peer which will broadcast a revoked commitment transaction send - // a number of update_fail/commitment_signed updates without ever sending the RAA in - // response to our commitment_signed. This is somewhat misbehavior-y, though not - // technically disallowed and we should probably handle it reasonably. - // Note that this is pretty exhaustive as an outbound HTLC which we haven't yet - // failed/fulfilled backwards must be in at least one of the latest two remote commitment - // transactions: - // * Once we move it out of our holding cell/add it, we will immediately include it in a - // commitment_signed (implying it will be in the latest remote commitment transaction). - // * Once they remove it, we will send a (the first) commitment_signed without the HTLC, - // and once they revoke the previous commitment transaction (allowing us to send a new - // commitment_signed) we will be free to fail/fulfill the HTLC backwards. - let mut nodes = create_network(3); - - // Create some initial channels - create_announced_chan_between_nodes(&nodes, 0, 1); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); - - let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000); - // Get the will-be-revoked local txn from nodes[2] - let revoked_local_txn = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone(); - // Revoke the old state - claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage); - - let (_, first_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000); - let (_, second_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000); - let (_, third_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000); - - assert!(nodes[2].node.fail_htlc_backwards(&first_payment_hash, 0)); - check_added_monitors!(nodes[2], 1); - let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fulfill_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert_eq!(updates.update_fail_htlcs.len(), 1); - assert!(updates.update_fee.is_none()); - nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap(); - let bs_raa = commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false, true, false, true); - // Drop the last RAA from 3 -> 2 - - assert!(nodes[2].node.fail_htlc_backwards(&second_payment_hash, 0)); - check_added_monitors!(nodes[2], 1); - let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fulfill_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert_eq!(updates.update_fail_htlcs.len(), 1); - assert!(updates.update_fee.is_none()); - nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap(); - nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed).unwrap(); - check_added_monitors!(nodes[1], 1); - // Note that nodes[1] is in AwaitingRAA, so won't send a CS - let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id()); - nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa).unwrap(); - check_added_monitors!(nodes[2], 1); - - assert!(nodes[2].node.fail_htlc_backwards(&third_payment_hash, 0)); - check_added_monitors!(nodes[2], 1); - let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fulfill_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert_eq!(updates.update_fail_htlcs.len(), 1); - assert!(updates.update_fee.is_none()); - nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap(); - // At this point first_payment_hash has dropped out of the latest two commitment - // transactions that nodes[1] is tracking... - nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed).unwrap(); - check_added_monitors!(nodes[1], 1); - // Note that nodes[1] is (still) in AwaitingRAA, so won't send a CS - let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id()); - nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa).unwrap(); - check_added_monitors!(nodes[2], 1); - - // Add a fourth HTLC, this one will get sequestered away in nodes[1]'s holding cell waiting - // on nodes[2]'s RAA. - let route = nodes[1].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); - let (_, fourth_payment_hash) = get_payment_preimage_hash!(nodes[0]); - nodes[1].node.send_payment(route, fourth_payment_hash).unwrap(); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - assert!(nodes[1].node.get_and_clear_pending_events().is_empty()); - check_added_monitors!(nodes[1], 0); - - if deliver_bs_raa { - nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_raa).unwrap(); - // One monitor for the new revocation preimage, one as we generate a commitment for - // nodes[0] to fail first_payment_hash backwards. - check_added_monitors!(nodes[1], 2); - } - - let mut failed_htlcs = HashSet::new(); - assert!(nodes[1].node.get_and_clear_pending_events().is_empty()); - - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42}; - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - - let events = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentFailed { ref payment_hash, .. } => { - assert_eq!(*payment_hash, fourth_payment_hash); - }, - _ => panic!("Unexpected event"), - } - - if !deliver_bs_raa { - // If we delivered the RAA already then we already failed first_payment_hash backwards. - check_added_monitors!(nodes[1], 1); - } - - let events = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), if deliver_bs_raa { 3 } else { 2 }); - match events[if deliver_bs_raa { 2 } else { 0 }] { - MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {}, - _ => panic!("Unexpected event"), - } - if deliver_bs_raa { - match events[0] { - MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => { - assert_eq!(nodes[2].node.get_our_node_id(), *node_id); - assert_eq!(update_add_htlcs.len(), 1); - assert!(update_fulfill_htlcs.is_empty()); - assert!(update_fail_htlcs.is_empty()); - assert!(update_fail_malformed_htlcs.is_empty()); - }, - _ => panic!("Unexpected event"), - } - } - // Due to the way backwards-failing occurs we do the updates in two steps. - let updates = match events[1] { - MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref commitment_signed, .. } } => { - assert!(update_add_htlcs.is_empty()); - assert_eq!(update_fail_htlcs.len(), 1); - assert!(update_fulfill_htlcs.is_empty()); - assert!(update_fail_malformed_htlcs.is_empty()); - assert_eq!(nodes[0].node.get_our_node_id(), *node_id); - - nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]).unwrap(); - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed).unwrap(); - check_added_monitors!(nodes[0], 1); - let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); - check_added_monitors!(nodes[1], 1); - let bs_second_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed).unwrap(); - check_added_monitors!(nodes[1], 1); - let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); - check_added_monitors!(nodes[0], 1); - - if !deliver_bs_raa { - // If we delievered B's RAA we got an unknown preimage error, not something - // that we should update our routing table for. - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - } - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentFailed { ref payment_hash, .. } => { - assert!(failed_htlcs.insert(payment_hash.0)); - }, - _ => panic!("Unexpected event"), - } - - bs_second_update - }, - _ => panic!("Unexpected event"), - }; - - assert!(updates.update_add_htlcs.is_empty()); - assert_eq!(updates.update_fail_htlcs.len(), 2); - assert!(updates.update_fulfill_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap(); - nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fail_htlcs[1]).unwrap(); - commitment_signed_dance!(nodes[0], nodes[1], updates.commitment_signed, false, true); - - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 2); - for event in events { - match event { - MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - } - - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 2); - match events[0] { - Event::PaymentFailed { ref payment_hash, .. } => { - assert!(failed_htlcs.insert(payment_hash.0)); - }, - _ => panic!("Unexpected event"), - } - match events[1] { - Event::PaymentFailed { ref payment_hash, .. } => { - assert!(failed_htlcs.insert(payment_hash.0)); - }, - _ => panic!("Unexpected event"), - } - - assert!(failed_htlcs.contains(&first_payment_hash.0)); - assert!(failed_htlcs.contains(&second_payment_hash.0)); - assert!(failed_htlcs.contains(&third_payment_hash.0)); - } - - #[test] - fn test_commitment_revoked_fail_backward_exhaustive() { - do_test_commitment_revoked_fail_backward_exhaustive(false); - do_test_commitment_revoked_fail_backward_exhaustive(true); - } - - #[test] - fn test_htlc_ignore_latest_remote_commitment() { - // Test that HTLC transactions spending the latest remote commitment transaction are simply - // ignored if we cannot claim them. This originally tickled an invalid unwrap(). - let nodes = create_network(2); - create_announced_chan_between_nodes(&nodes, 0, 1); - - route_payment(&nodes[0], &[&nodes[1]], 10000000); - nodes[0].node.force_close_channel(&nodes[0].node.list_channels()[0].channel_id); - { - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { contents: msgs::UnsignedChannelUpdate { flags, .. }, .. } } => { - assert_eq!(flags & 0b10, 0b10); - }, - _ => panic!("Unexpected event"), - } - } - - let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 2); - - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&node_txn[0], &node_txn[1]], &[1; 2]); - - { - let events = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { contents: msgs::UnsignedChannelUpdate { flags, .. }, .. } } => { - assert_eq!(flags & 0b10, 0b10); - }, - _ => panic!("Unexpected event"), - } - } - - // Duplicate the block_connected call since this may happen due to other listeners - // registering new transactions - nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&node_txn[0], &node_txn[1]], &[1; 2]); - } - - #[test] - fn test_force_close_fail_back() { - // Check which HTLCs are failed-backwards on channel force-closure - let mut nodes = create_network(3); - create_announced_chan_between_nodes(&nodes, 0, 1); - create_announced_chan_between_nodes(&nodes, 1, 2); - - let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, 42).unwrap(); - - let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[0]); - - let mut payment_event = { - nodes[0].node.send_payment(route, our_payment_hash).unwrap(); - check_added_monitors!(nodes[0], 1); - - let mut events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - SendEvent::from_event(events.remove(0)) - }; - - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); - commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false); - - let events_1 = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events_1.len(), 1); - match events_1[0] { - Event::PendingHTLCsForwardable { .. } => { }, - _ => panic!("Unexpected event"), - }; - - nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now(); - nodes[1].node.process_pending_htlc_forwards(); - - let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events_2.len(), 1); - payment_event = SendEvent::from_event(events_2.remove(0)); - assert_eq!(payment_event.msgs.len(), 1); - - check_added_monitors!(nodes[1], 1); - nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); - nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); - check_added_monitors!(nodes[2], 1); - let (_, _) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - - // nodes[2] now has the latest commitment transaction, but hasn't revoked its previous - // state or updated nodes[1]' state. Now force-close and broadcast that commitment/HTLC - // transaction and ensure nodes[1] doesn't fail-backwards (this was originally a bug!). - - nodes[2].node.force_close_channel(&payment_event.commitment_msg.channel_id); - let events_3 = nodes[2].node.get_and_clear_pending_msg_events(); - assert_eq!(events_3.len(), 1); - match events_3[0] { - MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { contents: msgs::UnsignedChannelUpdate { flags, .. }, .. } } => { - assert_eq!(flags & 0b10, 0b10); - }, - _ => panic!("Unexpected event"), - } - - let tx = { - let mut node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap(); - // Note that we don't bother broadcasting the HTLC-Success transaction here as we don't - // have a use for it unless nodes[2] learns the preimage somehow, the funds will go - // back to nodes[1] upon timeout otherwise. - assert_eq!(node_txn.len(), 1); - node_txn.remove(0) - }; - - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&tx], &[1]); - - let events_4 = nodes[1].node.get_and_clear_pending_msg_events(); - // Note no UpdateHTLCs event here from nodes[1] to nodes[0]! - assert_eq!(events_4.len(), 1); - match events_4[0] { - MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { contents: msgs::UnsignedChannelUpdate { flags, .. }, .. } } => { - assert_eq!(flags & 0b10, 0b10); - }, - _ => panic!("Unexpected event"), - } - - // Now check that if we add the preimage to ChannelMonitor it broadcasts our HTLC-Success.. - { - let mut monitors = nodes[2].chan_monitor.simple_monitor.monitors.lock().unwrap(); - monitors.get_mut(&OutPoint::new(Sha256dHash::from(&payment_event.commitment_msg.channel_id[..]), 0)).unwrap() - .provide_payment_preimage(&our_payment_hash, &our_payment_preimage); - } - nodes[2].chain_monitor.block_connected_checked(&header, 1, &[&tx], &[1]); - let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 1); - assert_eq!(node_txn[0].input.len(), 1); - assert_eq!(node_txn[0].input[0].previous_output.txid, tx.txid()); - assert_eq!(node_txn[0].lock_time, 0); // Must be an HTLC-Success - assert_eq!(node_txn[0].input[0].witness.len(), 5); // Must be an HTLC-Success - - check_spends!(node_txn[0], tx); - } - - #[test] - fn test_unconf_chan() { - // After creating a chan between nodes, we disconnect all blocks previously seen to force a channel close on nodes[0] side - let nodes = create_network(2); - create_announced_chan_between_nodes(&nodes, 0, 1); - - let channel_state = nodes[0].node.channel_state.lock().unwrap(); - assert_eq!(channel_state.by_id.len(), 1); - assert_eq!(channel_state.short_to_id.len(), 1); - mem::drop(channel_state); - - let mut headers = Vec::new(); - let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - headers.push(header.clone()); - for _i in 2..100 { - header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - headers.push(header.clone()); - } - while !headers.is_empty() { - nodes[0].node.block_disconnected(&headers.pop().unwrap()); - } - { - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { contents: msgs::UnsignedChannelUpdate { flags, .. }, .. } } => { - assert_eq!(flags & 0b10, 0b10); - }, - _ => panic!("Unexpected event"), - } - } - let channel_state = nodes[0].node.channel_state.lock().unwrap(); - assert_eq!(channel_state.by_id.len(), 0); - assert_eq!(channel_state.short_to_id.len(), 0); - } - - macro_rules! get_chan_reestablish_msgs { - ($src_node: expr, $dst_node: expr) => { - { - let mut res = Vec::with_capacity(1); - for msg in $src_node.node.get_and_clear_pending_msg_events() { - if let MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } = msg { - assert_eq!(*node_id, $dst_node.node.get_our_node_id()); - res.push(msg.clone()); - } else { - panic!("Unexpected event") - } - } - res - } - } - } - - macro_rules! handle_chan_reestablish_msgs { - ($src_node: expr, $dst_node: expr) => { - { - let msg_events = $src_node.node.get_and_clear_pending_msg_events(); - let mut idx = 0; - let funding_locked = if let Some(&MessageSendEvent::SendFundingLocked { ref node_id, ref msg }) = msg_events.get(0) { - idx += 1; - assert_eq!(*node_id, $dst_node.node.get_our_node_id()); - Some(msg.clone()) - } else { - None - }; - - let mut revoke_and_ack = None; - let mut commitment_update = None; - let order = if let Some(ev) = msg_events.get(idx) { - idx += 1; - match ev { - &MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => { - assert_eq!(*node_id, $dst_node.node.get_our_node_id()); - revoke_and_ack = Some(msg.clone()); - RAACommitmentOrder::RevokeAndACKFirst - }, - &MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => { - assert_eq!(*node_id, $dst_node.node.get_our_node_id()); - commitment_update = Some(updates.clone()); - RAACommitmentOrder::CommitmentFirst - }, - _ => panic!("Unexpected event"), - } - } else { - RAACommitmentOrder::CommitmentFirst - }; - - if let Some(ev) = msg_events.get(idx) { - match ev { - &MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => { - assert_eq!(*node_id, $dst_node.node.get_our_node_id()); - assert!(revoke_and_ack.is_none()); - revoke_and_ack = Some(msg.clone()); - }, - &MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => { - assert_eq!(*node_id, $dst_node.node.get_our_node_id()); - assert!(commitment_update.is_none()); - commitment_update = Some(updates.clone()); - }, - _ => panic!("Unexpected event"), - } - } - - (funding_locked, revoke_and_ack, commitment_update, order) - } - } - } - - /// pending_htlc_adds includes both the holding cell and in-flight update_add_htlcs, whereas - /// for claims/fails they are separated out. - fn reconnect_nodes(node_a: &Node, node_b: &Node, send_funding_locked: (bool, bool), pending_htlc_adds: (i64, i64), pending_htlc_claims: (usize, usize), pending_cell_htlc_claims: (usize, usize), pending_cell_htlc_fails: (usize, usize), pending_raa: (bool, bool)) { - node_a.node.peer_connected(&node_b.node.get_our_node_id()); - let reestablish_1 = get_chan_reestablish_msgs!(node_a, node_b); - node_b.node.peer_connected(&node_a.node.get_our_node_id()); - let reestablish_2 = get_chan_reestablish_msgs!(node_b, node_a); - - if send_funding_locked.0 { - // If a expects a funding_locked, it better not think it has received a revoke_and_ack - // from b - for reestablish in reestablish_1.iter() { - assert_eq!(reestablish.next_remote_commitment_number, 0); - } - } - if send_funding_locked.1 { - // If b expects a funding_locked, it better not think it has received a revoke_and_ack - // from a - for reestablish in reestablish_2.iter() { - assert_eq!(reestablish.next_remote_commitment_number, 0); - } - } - if send_funding_locked.0 || send_funding_locked.1 { - // If we expect any funding_locked's, both sides better have set - // next_local_commitment_number to 1 - for reestablish in reestablish_1.iter() { - assert_eq!(reestablish.next_local_commitment_number, 1); - } - for reestablish in reestablish_2.iter() { - assert_eq!(reestablish.next_local_commitment_number, 1); - } - } - - let mut resp_1 = Vec::new(); - for msg in reestablish_1 { - node_b.node.handle_channel_reestablish(&node_a.node.get_our_node_id(), &msg).unwrap(); - resp_1.push(handle_chan_reestablish_msgs!(node_b, node_a)); - } - if pending_cell_htlc_claims.0 != 0 || pending_cell_htlc_fails.0 != 0 { - check_added_monitors!(node_b, 1); - } else { - check_added_monitors!(node_b, 0); - } - - let mut resp_2 = Vec::new(); - for msg in reestablish_2 { - node_a.node.handle_channel_reestablish(&node_b.node.get_our_node_id(), &msg).unwrap(); - resp_2.push(handle_chan_reestablish_msgs!(node_a, node_b)); - } - if pending_cell_htlc_claims.1 != 0 || pending_cell_htlc_fails.1 != 0 { - check_added_monitors!(node_a, 1); - } else { - check_added_monitors!(node_a, 0); - } - - // We dont yet support both needing updates, as that would require a different commitment dance: - assert!((pending_htlc_adds.0 == 0 && pending_htlc_claims.0 == 0 && pending_cell_htlc_claims.0 == 0 && pending_cell_htlc_fails.0 == 0) || - (pending_htlc_adds.1 == 0 && pending_htlc_claims.1 == 0 && pending_cell_htlc_claims.1 == 0 && pending_cell_htlc_fails.1 == 0)); - - for chan_msgs in resp_1.drain(..) { - if send_funding_locked.0 { - node_a.node.handle_funding_locked(&node_b.node.get_our_node_id(), &chan_msgs.0.unwrap()).unwrap(); - let announcement_event = node_a.node.get_and_clear_pending_msg_events(); - if !announcement_event.is_empty() { - assert_eq!(announcement_event.len(), 1); - if let MessageSendEvent::SendAnnouncementSignatures { .. } = announcement_event[0] { - //TODO: Test announcement_sigs re-sending - } else { panic!("Unexpected event!"); } - } - } else { - assert!(chan_msgs.0.is_none()); - } - if pending_raa.0 { - assert!(chan_msgs.3 == RAACommitmentOrder::RevokeAndACKFirst); - node_a.node.handle_revoke_and_ack(&node_b.node.get_our_node_id(), &chan_msgs.1.unwrap()).unwrap(); - assert!(node_a.node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(node_a, 1); - } else { - assert!(chan_msgs.1.is_none()); - } - if pending_htlc_adds.0 != 0 || pending_htlc_claims.0 != 0 || pending_cell_htlc_claims.0 != 0 || pending_cell_htlc_fails.0 != 0 { - let commitment_update = chan_msgs.2.unwrap(); - if pending_htlc_adds.0 != -1 { // We use -1 to denote a response commitment_signed - assert_eq!(commitment_update.update_add_htlcs.len(), pending_htlc_adds.0 as usize); - } else { - assert!(commitment_update.update_add_htlcs.is_empty()); - } - assert_eq!(commitment_update.update_fulfill_htlcs.len(), pending_htlc_claims.0 + pending_cell_htlc_claims.0); - assert_eq!(commitment_update.update_fail_htlcs.len(), pending_cell_htlc_fails.0); - assert!(commitment_update.update_fail_malformed_htlcs.is_empty()); - for update_add in commitment_update.update_add_htlcs { - node_a.node.handle_update_add_htlc(&node_b.node.get_our_node_id(), &update_add).unwrap(); - } - for update_fulfill in commitment_update.update_fulfill_htlcs { - node_a.node.handle_update_fulfill_htlc(&node_b.node.get_our_node_id(), &update_fulfill).unwrap(); - } - for update_fail in commitment_update.update_fail_htlcs { - node_a.node.handle_update_fail_htlc(&node_b.node.get_our_node_id(), &update_fail).unwrap(); - } - - if pending_htlc_adds.0 != -1 { // We use -1 to denote a response commitment_signed - commitment_signed_dance!(node_a, node_b, commitment_update.commitment_signed, false); - } else { - node_a.node.handle_commitment_signed(&node_b.node.get_our_node_id(), &commitment_update.commitment_signed).unwrap(); - check_added_monitors!(node_a, 1); - let as_revoke_and_ack = get_event_msg!(node_a, MessageSendEvent::SendRevokeAndACK, node_b.node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - node_b.node.handle_revoke_and_ack(&node_a.node.get_our_node_id(), &as_revoke_and_ack).unwrap(); - assert!(node_b.node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(node_b, 1); - } - } else { - assert!(chan_msgs.2.is_none()); - } - } - - for chan_msgs in resp_2.drain(..) { - if send_funding_locked.1 { - node_b.node.handle_funding_locked(&node_a.node.get_our_node_id(), &chan_msgs.0.unwrap()).unwrap(); - let announcement_event = node_b.node.get_and_clear_pending_msg_events(); - if !announcement_event.is_empty() { - assert_eq!(announcement_event.len(), 1); - if let MessageSendEvent::SendAnnouncementSignatures { .. } = announcement_event[0] { - //TODO: Test announcement_sigs re-sending - } else { panic!("Unexpected event!"); } - } - } else { - assert!(chan_msgs.0.is_none()); - } - if pending_raa.1 { - assert!(chan_msgs.3 == RAACommitmentOrder::RevokeAndACKFirst); - node_b.node.handle_revoke_and_ack(&node_a.node.get_our_node_id(), &chan_msgs.1.unwrap()).unwrap(); - assert!(node_b.node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(node_b, 1); - } else { - assert!(chan_msgs.1.is_none()); - } - if pending_htlc_adds.1 != 0 || pending_htlc_claims.1 != 0 || pending_cell_htlc_claims.1 != 0 || pending_cell_htlc_fails.1 != 0 { - let commitment_update = chan_msgs.2.unwrap(); - if pending_htlc_adds.1 != -1 { // We use -1 to denote a response commitment_signed - assert_eq!(commitment_update.update_add_htlcs.len(), pending_htlc_adds.1 as usize); - } - assert_eq!(commitment_update.update_fulfill_htlcs.len(), pending_htlc_claims.0 + pending_cell_htlc_claims.0); - assert_eq!(commitment_update.update_fail_htlcs.len(), pending_cell_htlc_fails.0); - assert!(commitment_update.update_fail_malformed_htlcs.is_empty()); - for update_add in commitment_update.update_add_htlcs { - node_b.node.handle_update_add_htlc(&node_a.node.get_our_node_id(), &update_add).unwrap(); - } - for update_fulfill in commitment_update.update_fulfill_htlcs { - node_b.node.handle_update_fulfill_htlc(&node_a.node.get_our_node_id(), &update_fulfill).unwrap(); - } - for update_fail in commitment_update.update_fail_htlcs { - node_b.node.handle_update_fail_htlc(&node_a.node.get_our_node_id(), &update_fail).unwrap(); - } - - if pending_htlc_adds.1 != -1 { // We use -1 to denote a response commitment_signed - commitment_signed_dance!(node_b, node_a, commitment_update.commitment_signed, false); - } else { - node_b.node.handle_commitment_signed(&node_a.node.get_our_node_id(), &commitment_update.commitment_signed).unwrap(); - check_added_monitors!(node_b, 1); - let bs_revoke_and_ack = get_event_msg!(node_b, MessageSendEvent::SendRevokeAndACK, node_a.node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - node_a.node.handle_revoke_and_ack(&node_b.node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); - assert!(node_a.node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(node_a, 1); - } - } else { - assert!(chan_msgs.2.is_none()); - } - } - } - - #[test] - fn test_simple_peer_disconnect() { - // Test that we can reconnect when there are no lost messages - let nodes = create_network(3); - create_announced_chan_between_nodes(&nodes, 0, 1); - create_announced_chan_between_nodes(&nodes, 1, 2); - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - - let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0; - let payment_hash_2 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1; - fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_2); - claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_1); - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - - let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0; - let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0; - let payment_hash_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1; - let payment_hash_6 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1; - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - - claim_payment_along_route(&nodes[0], &vec!(&nodes[1], &nodes[2]), true, payment_preimage_3); - fail_payment_along_route(&nodes[0], &[&nodes[1], &nodes[2]], true, payment_hash_5); - - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (1, 0), (1, 0), (false, false)); - { - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 2); - match events[0] { - Event::PaymentSent { payment_preimage } => { - assert_eq!(payment_preimage, payment_preimage_3); - }, - _ => panic!("Unexpected event"), - } - match events[1] { - Event::PaymentFailed { payment_hash, rejected_by_dest, .. } => { - assert_eq!(payment_hash, payment_hash_5); - assert!(rejected_by_dest); - }, - _ => panic!("Unexpected event"), - } - } - - claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_4); - fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_6); - } - - fn do_test_drop_messages_peer_disconnect(messages_delivered: u8) { - // Test that we can reconnect when in-flight HTLC updates get dropped - let mut nodes = create_network(2); - if messages_delivered == 0 { - create_chan_between_nodes_with_value_a(&nodes[0], &nodes[1], 100000, 10001); - // nodes[1] doesn't receive the funding_locked message (it'll be re-sent on reconnect) - } else { - create_announced_chan_between_nodes(&nodes, 0, 1); - } - - let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), Some(&nodes[0].node.list_usable_channels()), &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); - let (payment_preimage_1, payment_hash_1) = get_payment_preimage_hash!(nodes[0]); - - let payment_event = { - nodes[0].node.send_payment(route.clone(), payment_hash_1).unwrap(); - check_added_monitors!(nodes[0], 1); - - let mut events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - SendEvent::from_event(events.remove(0)) - }; - assert_eq!(nodes[1].node.get_our_node_id(), payment_event.node_id); - - if messages_delivered < 2 { - // Drop the payment_event messages, and let them get re-generated in reconnect_nodes! - } else { - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); - if messages_delivered >= 3 { - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); - check_added_monitors!(nodes[1], 1); - let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - - if messages_delivered >= 4 { - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[0], 1); - - if messages_delivered >= 5 { - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed).unwrap(); - let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[0], 1); - - if messages_delivered >= 6 { - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[1], 1); - } - } - } - } - } - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - if messages_delivered < 3 { - // Even if the funding_locked messages get exchanged, as long as nothing further was - // received on either side, both sides will need to resend them. - reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 1), (0, 0), (0, 0), (0, 0), (false, false)); - } else if messages_delivered == 3 { - // nodes[0] still wants its RAA + commitment_signed - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (true, false)); - } else if messages_delivered == 4 { - // nodes[0] still wants its commitment_signed - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (false, false)); - } else if messages_delivered == 5 { - // nodes[1] still wants its final RAA - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, true)); - } else if messages_delivered == 6 { - // Everything was delivered... - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - } - - let events_1 = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events_1.len(), 1); - match events_1[0] { - Event::PendingHTLCsForwardable { .. } => { }, - _ => panic!("Unexpected event"), - }; - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - - nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now(); - nodes[1].node.process_pending_htlc_forwards(); - - let events_2 = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events_2.len(), 1); - match events_2[0] { - Event::PaymentReceived { ref payment_hash, amt } => { - assert_eq!(payment_hash_1, *payment_hash); - assert_eq!(amt, 1000000); - }, - _ => panic!("Unexpected event"), - } - - nodes[1].node.claim_funds(payment_preimage_1); - check_added_monitors!(nodes[1], 1); - - let events_3 = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events_3.len(), 1); - let (update_fulfill_htlc, commitment_signed) = match events_3[0] { - MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => { - assert_eq!(*node_id, nodes[0].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert_eq!(updates.update_fulfill_htlcs.len(), 1); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - (updates.update_fulfill_htlcs[0].clone(), updates.commitment_signed.clone()) - }, - _ => panic!("Unexpected event"), - }; - - if messages_delivered >= 1 { - nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlc).unwrap(); - - let events_4 = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events_4.len(), 1); - match events_4[0] { - Event::PaymentSent { ref payment_preimage } => { - assert_eq!(payment_preimage_1, *payment_preimage); - }, - _ => panic!("Unexpected event"), - } - - if messages_delivered >= 2 { - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed).unwrap(); - check_added_monitors!(nodes[0], 1); - let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - - if messages_delivered >= 3 { - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[1], 1); - - if messages_delivered >= 4 { - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed).unwrap(); - let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[1], 1); - - if messages_delivered >= 5 { - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[0], 1); - } - } - } - } - } - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - if messages_delivered < 2 { - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (false, false)); - //TODO: Deduplicate PaymentSent events, then enable this if: - //if messages_delivered < 1 { - let events_4 = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events_4.len(), 1); - match events_4[0] { - Event::PaymentSent { ref payment_preimage } => { - assert_eq!(payment_preimage_1, *payment_preimage); - }, - _ => panic!("Unexpected event"), - } - //} - } else if messages_delivered == 2 { - // nodes[0] still wants its RAA + commitment_signed - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, true)); - } else if messages_delivered == 3 { - // nodes[0] still wants its commitment_signed - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, false)); - } else if messages_delivered == 4 { - // nodes[1] still wants its final RAA - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (true, false)); - } else if messages_delivered == 5 { - // Everything was delivered... - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - } - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - - // Channel should still work fine... - let payment_preimage_2 = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000).0; - claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2); - } - - #[test] - fn test_drop_messages_peer_disconnect_a() { - do_test_drop_messages_peer_disconnect(0); - do_test_drop_messages_peer_disconnect(1); - do_test_drop_messages_peer_disconnect(2); - do_test_drop_messages_peer_disconnect(3); - } - - #[test] - fn test_drop_messages_peer_disconnect_b() { - do_test_drop_messages_peer_disconnect(4); - do_test_drop_messages_peer_disconnect(5); - do_test_drop_messages_peer_disconnect(6); - } - - #[test] - fn test_funding_peer_disconnect() { - // Test that we can lock in our funding tx while disconnected - let nodes = create_network(2); - let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001); - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - - confirm_transaction(&nodes[0].chain_monitor, &tx, tx.version); - let events_1 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_1.len(), 1); - match events_1[0] { - MessageSendEvent::SendFundingLocked { ref node_id, msg: _ } => { - assert_eq!(*node_id, nodes[1].node.get_our_node_id()); - }, - _ => panic!("Unexpected event"), - } - - reconnect_nodes(&nodes[0], &nodes[1], (false, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - - confirm_transaction(&nodes[1].chain_monitor, &tx, tx.version); - let events_2 = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events_2.len(), 2); - match events_2[0] { - MessageSendEvent::SendFundingLocked { ref node_id, msg: _ } => { - assert_eq!(*node_id, nodes[0].node.get_our_node_id()); - }, - _ => panic!("Unexpected event"), - } - match events_2[1] { - MessageSendEvent::SendAnnouncementSignatures { ref node_id, msg: _ } => { - assert_eq!(*node_id, nodes[0].node.get_our_node_id()); - }, - _ => panic!("Unexpected event"), - } - - reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - - // TODO: We shouldn't need to manually pass list_usable_chanels here once we support - // rebroadcasting announcement_signatures upon reconnect. - - let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), Some(&nodes[0].node.list_usable_channels()), &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); - let (payment_preimage, _) = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000); - claim_payment(&nodes[0], &[&nodes[1]], payment_preimage); - } - - #[test] - fn test_drop_messages_peer_disconnect_dual_htlc() { - // Test that we can handle reconnecting when both sides of a channel have pending - // commitment_updates when we disconnect. - let mut nodes = create_network(2); - create_announced_chan_between_nodes(&nodes, 0, 1); - - let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000); - - // Now try to send a second payment which will fail to send - let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); - let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]); - - nodes[0].node.send_payment(route.clone(), payment_hash_2).unwrap(); - check_added_monitors!(nodes[0], 1); - - let events_1 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_1.len(), 1); - match events_1[0] { - MessageSendEvent::UpdateHTLCs { .. } => {}, - _ => panic!("Unexpected event"), - } - - assert!(nodes[1].node.claim_funds(payment_preimage_1)); - check_added_monitors!(nodes[1], 1); - - let events_2 = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events_2.len(), 1); - match events_2[0] { - MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => { - assert_eq!(*node_id, nodes[0].node.get_our_node_id()); - assert!(update_add_htlcs.is_empty()); - assert_eq!(update_fulfill_htlcs.len(), 1); - assert!(update_fail_htlcs.is_empty()); - assert!(update_fail_malformed_htlcs.is_empty()); - assert!(update_fee.is_none()); - - nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlcs[0]).unwrap(); - let events_3 = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events_3.len(), 1); - match events_3[0] { - Event::PaymentSent { ref payment_preimage } => { - assert_eq!(*payment_preimage, payment_preimage_1); - }, - _ => panic!("Unexpected event"), - } - - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed).unwrap(); - let _ = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[0], 1); - }, - _ => panic!("Unexpected event"), - } - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - - nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); - let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]); - assert_eq!(reestablish_1.len(), 1); - nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); - let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]); - assert_eq!(reestablish_2.len(), 1); - - nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]).unwrap(); - let as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]); - nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]).unwrap(); - let bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]); - - assert!(as_resp.0.is_none()); - assert!(bs_resp.0.is_none()); - - assert!(bs_resp.1.is_none()); - assert!(bs_resp.2.is_none()); - - assert!(as_resp.3 == RAACommitmentOrder::CommitmentFirst); - - assert_eq!(as_resp.2.as_ref().unwrap().update_add_htlcs.len(), 1); - assert!(as_resp.2.as_ref().unwrap().update_fulfill_htlcs.is_empty()); - assert!(as_resp.2.as_ref().unwrap().update_fail_htlcs.is_empty()); - assert!(as_resp.2.as_ref().unwrap().update_fail_malformed_htlcs.is_empty()); - assert!(as_resp.2.as_ref().unwrap().update_fee.is_none()); - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().update_add_htlcs[0]).unwrap(); - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().commitment_signed).unwrap(); - let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[1], 1); - - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), as_resp.1.as_ref().unwrap()).unwrap(); - let bs_second_commitment_signed = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - assert!(bs_second_commitment_signed.update_add_htlcs.is_empty()); - assert!(bs_second_commitment_signed.update_fulfill_htlcs.is_empty()); - assert!(bs_second_commitment_signed.update_fail_htlcs.is_empty()); - assert!(bs_second_commitment_signed.update_fail_malformed_htlcs.is_empty()); - assert!(bs_second_commitment_signed.update_fee.is_none()); - check_added_monitors!(nodes[1], 1); - - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); - let as_commitment_signed = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - assert!(as_commitment_signed.update_add_htlcs.is_empty()); - assert!(as_commitment_signed.update_fulfill_htlcs.is_empty()); - assert!(as_commitment_signed.update_fail_htlcs.is_empty()); - assert!(as_commitment_signed.update_fail_malformed_htlcs.is_empty()); - assert!(as_commitment_signed.update_fee.is_none()); - check_added_monitors!(nodes[0], 1); - - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment_signed.commitment_signed).unwrap(); - let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[0], 1); - - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed.commitment_signed).unwrap(); - let bs_second_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[1], 1); - - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[1], 1); - - let events_4 = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events_4.len(), 1); - match events_4[0] { - Event::PendingHTLCsForwardable { .. } => { }, - _ => panic!("Unexpected event"), - }; - - nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now(); - nodes[1].node.process_pending_htlc_forwards(); - - let events_5 = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events_5.len(), 1); - match events_5[0] { - Event::PaymentReceived { ref payment_hash, amt: _ } => { - assert_eq!(payment_hash_2, *payment_hash); - }, - _ => panic!("Unexpected event"), - } - - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke_and_ack).unwrap(); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[0], 1); - - claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2); - } - - #[test] - fn test_simple_monitor_permanent_update_fail() { - // Test that we handle a simple permanent monitor update failure - let mut nodes = create_network(2); - create_announced_chan_between_nodes(&nodes, 0, 1); - - let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); - let (_, payment_hash_1) = get_payment_preimage_hash!(nodes[0]); - - *nodes[0].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::PermanentFailure); - if let Err(APIError::ChannelUnavailable {..}) = nodes[0].node.send_payment(route, payment_hash_1) {} else { panic!(); } - check_added_monitors!(nodes[0], 1); - - let events_1 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_1.len(), 2); - match events_1[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - }; - match events_1[1] { - MessageSendEvent::HandleError { node_id, .. } => assert_eq!(node_id, nodes[1].node.get_our_node_id()), - _ => panic!("Unexpected event"), - }; - - // TODO: Once we hit the chain with the failure transaction we should check that we get a - // PaymentFailed event - - assert_eq!(nodes[0].node.list_channels().len(), 0); - } - - fn do_test_simple_monitor_temporary_update_fail(disconnect: bool) { - // Test that we can recover from a simple temporary monitor update failure optionally with - // a disconnect in between - let mut nodes = create_network(2); - create_announced_chan_between_nodes(&nodes, 0, 1); - - let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); - let (payment_preimage_1, payment_hash_1) = get_payment_preimage_hash!(nodes[0]); - - *nodes[0].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); - if let Err(APIError::MonitorUpdateFailed) = nodes[0].node.send_payment(route.clone(), payment_hash_1) {} else { panic!(); } - check_added_monitors!(nodes[0], 1); - - assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - assert_eq!(nodes[0].node.list_channels().len(), 1); - - if disconnect { - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - } - - *nodes[0].chan_monitor.update_ret.lock().unwrap() = Ok(()); - nodes[0].node.test_restore_channel_monitor(); - check_added_monitors!(nodes[0], 1); - - let mut events_2 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_2.len(), 1); - let payment_event = SendEvent::from_event(events_2.pop().unwrap()); - assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); - commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false); - - expect_pending_htlcs_forwardable!(nodes[1]); - - let events_3 = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events_3.len(), 1); - match events_3[0] { - Event::PaymentReceived { ref payment_hash, amt } => { - assert_eq!(payment_hash_1, *payment_hash); - assert_eq!(amt, 1000000); - }, - _ => panic!("Unexpected event"), - } - - claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1); - - // Now set it to failed again... - let (_, payment_hash_2) = get_payment_preimage_hash!(nodes[0]); - *nodes[0].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); - if let Err(APIError::MonitorUpdateFailed) = nodes[0].node.send_payment(route, payment_hash_2) {} else { panic!(); } - check_added_monitors!(nodes[0], 1); - - assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - assert_eq!(nodes[0].node.list_channels().len(), 1); - - if disconnect { - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - } - - // ...and make sure we can force-close a TemporaryFailure channel with a PermanentFailure - *nodes[0].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::PermanentFailure); - nodes[0].node.test_restore_channel_monitor(); - check_added_monitors!(nodes[0], 1); - - let events_5 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_5.len(), 1); - match events_5[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - - // TODO: Once we hit the chain with the failure transaction we should check that we get a - // PaymentFailed event - - assert_eq!(nodes[0].node.list_channels().len(), 0); - } - - #[test] - fn test_simple_monitor_temporary_update_fail() { - do_test_simple_monitor_temporary_update_fail(false); - do_test_simple_monitor_temporary_update_fail(true); - } - - fn do_test_monitor_temporary_update_fail(disconnect_count: usize) { - let disconnect_flags = 8 | 16; - - // Test that we can recover from a temporary monitor update failure with some in-flight - // HTLCs going on at the same time potentially with some disconnection thrown in. - // * First we route a payment, then get a temporary monitor update failure when trying to - // route a second payment. We then claim the first payment. - // * If disconnect_count is set, we will disconnect at this point (which is likely as - // TemporaryFailure likely indicates net disconnect which resulted in failing to update - // the ChannelMonitor on a watchtower). - // * If !(disconnect_count & 16) we deliver a update_fulfill_htlc/CS for the first payment - // immediately, otherwise we wait sconnect and deliver them via the reconnect - // channel_reestablish processing (ie disconnect_count & 16 makes no sense if - // disconnect_count & !disconnect_flags is 0). - // * We then update the channel monitor, reconnecting if disconnect_count is set and walk - // through message sending, potentially disconnect/reconnecting multiple times based on - // disconnect_count, to get the update_fulfill_htlc through. - // * We then walk through more message exchanges to get the original update_add_htlc - // through, swapping message ordering based on disconnect_count & 8 and optionally - // disconnect/reconnecting based on disconnect_count. - let mut nodes = create_network(2); - create_announced_chan_between_nodes(&nodes, 0, 1); - - let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000); - - // Now try to send a second payment which will fail to send - let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); - let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]); - - *nodes[0].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); - if let Err(APIError::MonitorUpdateFailed) = nodes[0].node.send_payment(route.clone(), payment_hash_2) {} else { panic!(); } - check_added_monitors!(nodes[0], 1); - - assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - assert_eq!(nodes[0].node.list_channels().len(), 1); - - // Claim the previous payment, which will result in a update_fulfill_htlc/CS from nodes[1] - // but nodes[0] won't respond since it is frozen. - assert!(nodes[1].node.claim_funds(payment_preimage_1)); - check_added_monitors!(nodes[1], 1); - let events_2 = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events_2.len(), 1); - let (bs_initial_fulfill, bs_initial_commitment_signed) = match events_2[0] { - MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => { - assert_eq!(*node_id, nodes[0].node.get_our_node_id()); - assert!(update_add_htlcs.is_empty()); - assert_eq!(update_fulfill_htlcs.len(), 1); - assert!(update_fail_htlcs.is_empty()); - assert!(update_fail_malformed_htlcs.is_empty()); - assert!(update_fee.is_none()); - - if (disconnect_count & 16) == 0 { - nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlcs[0]).unwrap(); - let events_3 = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events_3.len(), 1); - match events_3[0] { - Event::PaymentSent { ref payment_preimage } => { - assert_eq!(*payment_preimage, payment_preimage_1); - }, - _ => panic!("Unexpected event"), - } - - if let Err(msgs::HandleError{err, action: Some(msgs::ErrorAction::IgnoreError) }) = nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed) { - assert_eq!(err, "Previous monitor update failure prevented generation of RAA"); - } else { panic!(); } - } - - (update_fulfill_htlcs[0].clone(), commitment_signed.clone()) - }, - _ => panic!("Unexpected event"), - }; - - if disconnect_count & !disconnect_flags > 0 { - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - } - - // Now fix monitor updating... - *nodes[0].chan_monitor.update_ret.lock().unwrap() = Ok(()); - nodes[0].node.test_restore_channel_monitor(); - check_added_monitors!(nodes[0], 1); - - macro_rules! disconnect_reconnect_peers { () => { { - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - - nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); - let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]); - assert_eq!(reestablish_1.len(), 1); - nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); - let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]); - assert_eq!(reestablish_2.len(), 1); - - nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]).unwrap(); - let as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]); - nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]).unwrap(); - let bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]); - - assert!(as_resp.0.is_none()); - assert!(bs_resp.0.is_none()); - - (reestablish_1, reestablish_2, as_resp, bs_resp) - } } } - - let (payment_event, initial_revoke_and_ack) = if disconnect_count & !disconnect_flags > 0 { - assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - - nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); - let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]); - assert_eq!(reestablish_1.len(), 1); - nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); - let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]); - assert_eq!(reestablish_2.len(), 1); - - nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]).unwrap(); - check_added_monitors!(nodes[0], 0); - let mut as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]); - nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]).unwrap(); - check_added_monitors!(nodes[1], 0); - let mut bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]); - - assert!(as_resp.0.is_none()); - assert!(bs_resp.0.is_none()); - - assert!(bs_resp.1.is_none()); - if (disconnect_count & 16) == 0 { - assert!(bs_resp.2.is_none()); - - assert!(as_resp.1.is_some()); - assert!(as_resp.2.is_some()); - assert!(as_resp.3 == RAACommitmentOrder::CommitmentFirst); - } else { - assert!(bs_resp.2.as_ref().unwrap().update_add_htlcs.is_empty()); - assert!(bs_resp.2.as_ref().unwrap().update_fail_htlcs.is_empty()); - assert!(bs_resp.2.as_ref().unwrap().update_fail_malformed_htlcs.is_empty()); - assert!(bs_resp.2.as_ref().unwrap().update_fee.is_none()); - assert!(bs_resp.2.as_ref().unwrap().update_fulfill_htlcs == vec![bs_initial_fulfill]); - assert!(bs_resp.2.as_ref().unwrap().commitment_signed == bs_initial_commitment_signed); - - assert!(as_resp.1.is_none()); - - nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_resp.2.as_ref().unwrap().update_fulfill_htlcs[0]).unwrap(); - let events_3 = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events_3.len(), 1); - match events_3[0] { - Event::PaymentSent { ref payment_preimage } => { - assert_eq!(*payment_preimage, payment_preimage_1); - }, - _ => panic!("Unexpected event"), - } - - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_resp.2.as_ref().unwrap().commitment_signed).unwrap(); - let as_resp_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[0], 1); - - as_resp.1 = Some(as_resp_raa); - bs_resp.2 = None; - } - - if disconnect_count & !disconnect_flags > 1 { - let (second_reestablish_1, second_reestablish_2, second_as_resp, second_bs_resp) = disconnect_reconnect_peers!(); - - if (disconnect_count & 16) == 0 { - assert!(reestablish_1 == second_reestablish_1); - assert!(reestablish_2 == second_reestablish_2); - } - assert!(as_resp == second_as_resp); - assert!(bs_resp == second_bs_resp); - } - - (SendEvent::from_commitment_update(nodes[1].node.get_our_node_id(), as_resp.2.unwrap()), as_resp.1.unwrap()) - } else { - let mut events_4 = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events_4.len(), 2); - (SendEvent::from_event(events_4.remove(0)), match events_4[0] { - MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => { - assert_eq!(*node_id, nodes[1].node.get_our_node_id()); - msg.clone() - }, - _ => panic!("Unexpected event"), - }) - }; - - assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id()); - - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); - let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); - // nodes[1] is awaiting an RAA from nodes[0] still so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[1], 1); - - if disconnect_count & !disconnect_flags > 2 { - let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!(); - - assert!(as_resp.1.unwrap() == initial_revoke_and_ack); - assert!(bs_resp.1.unwrap() == bs_revoke_and_ack); - - assert!(as_resp.2.is_none()); - assert!(bs_resp.2.is_none()); - } - - let as_commitment_update; - let bs_second_commitment_update; - - macro_rules! handle_bs_raa { () => { - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); - as_commitment_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - assert!(as_commitment_update.update_add_htlcs.is_empty()); - assert!(as_commitment_update.update_fulfill_htlcs.is_empty()); - assert!(as_commitment_update.update_fail_htlcs.is_empty()); - assert!(as_commitment_update.update_fail_malformed_htlcs.is_empty()); - assert!(as_commitment_update.update_fee.is_none()); - check_added_monitors!(nodes[0], 1); - } } - - macro_rules! handle_initial_raa { () => { - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &initial_revoke_and_ack).unwrap(); - bs_second_commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - assert!(bs_second_commitment_update.update_add_htlcs.is_empty()); - assert!(bs_second_commitment_update.update_fulfill_htlcs.is_empty()); - assert!(bs_second_commitment_update.update_fail_htlcs.is_empty()); - assert!(bs_second_commitment_update.update_fail_malformed_htlcs.is_empty()); - assert!(bs_second_commitment_update.update_fee.is_none()); - check_added_monitors!(nodes[1], 1); - } } - - if (disconnect_count & 8) == 0 { - handle_bs_raa!(); - - if disconnect_count & !disconnect_flags > 3 { - let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!(); - - assert!(as_resp.1.unwrap() == initial_revoke_and_ack); - assert!(bs_resp.1.is_none()); - - assert!(as_resp.2.unwrap() == as_commitment_update); - assert!(bs_resp.2.is_none()); - - assert!(as_resp.3 == RAACommitmentOrder::RevokeAndACKFirst); - } - - handle_initial_raa!(); - - if disconnect_count & !disconnect_flags > 4 { - let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!(); - - assert!(as_resp.1.is_none()); - assert!(bs_resp.1.is_none()); - - assert!(as_resp.2.unwrap() == as_commitment_update); - assert!(bs_resp.2.unwrap() == bs_second_commitment_update); - } - } else { - handle_initial_raa!(); - - if disconnect_count & !disconnect_flags > 3 { - let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!(); - - assert!(as_resp.1.is_none()); - assert!(bs_resp.1.unwrap() == bs_revoke_and_ack); - - assert!(as_resp.2.is_none()); - assert!(bs_resp.2.unwrap() == bs_second_commitment_update); - - assert!(bs_resp.3 == RAACommitmentOrder::RevokeAndACKFirst); - } - - handle_bs_raa!(); - - if disconnect_count & !disconnect_flags > 4 { - let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!(); - - assert!(as_resp.1.is_none()); - assert!(bs_resp.1.is_none()); - - assert!(as_resp.2.unwrap() == as_commitment_update); - assert!(bs_resp.2.unwrap() == bs_second_commitment_update); - } - } - - nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment_update.commitment_signed).unwrap(); - let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[0], 1); - - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_update.commitment_signed).unwrap(); - let bs_second_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); - // No commitment_signed so get_event_msg's assert(len == 1) passes - check_added_monitors!(nodes[1], 1); - - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[1], 1); - - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke_and_ack).unwrap(); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[0], 1); - - expect_pending_htlcs_forwardable!(nodes[1]); - - let events_5 = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events_5.len(), 1); - match events_5[0] { - Event::PaymentReceived { ref payment_hash, amt } => { - assert_eq!(payment_hash_2, *payment_hash); - assert_eq!(amt, 1000000); - }, - _ => panic!("Unexpected event"), - } - - claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2); - } - - #[test] - fn test_monitor_temporary_update_fail_a() { - do_test_monitor_temporary_update_fail(0); - do_test_monitor_temporary_update_fail(1); - do_test_monitor_temporary_update_fail(2); - do_test_monitor_temporary_update_fail(3); - do_test_monitor_temporary_update_fail(4); - do_test_monitor_temporary_update_fail(5); - } - - #[test] - fn test_monitor_temporary_update_fail_b() { - do_test_monitor_temporary_update_fail(2 | 8); - do_test_monitor_temporary_update_fail(3 | 8); - do_test_monitor_temporary_update_fail(4 | 8); - do_test_monitor_temporary_update_fail(5 | 8); - } - - #[test] - fn test_monitor_temporary_update_fail_c() { - do_test_monitor_temporary_update_fail(1 | 16); - do_test_monitor_temporary_update_fail(2 | 16); - do_test_monitor_temporary_update_fail(3 | 16); - do_test_monitor_temporary_update_fail(2 | 8 | 16); - do_test_monitor_temporary_update_fail(3 | 8 | 16); - } - - #[test] - fn test_monitor_update_fail_cs() { - // Tests handling of a monitor update failure when processing an incoming commitment_signed - let mut nodes = create_network(2); - create_announced_chan_between_nodes(&nodes, 0, 1); - - let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); - let (payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[0]); - nodes[0].node.send_payment(route, our_payment_hash).unwrap(); - check_added_monitors!(nodes[0], 1); - - let send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0)); - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]).unwrap(); - - *nodes[1].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); - if let msgs::HandleError { err, action: Some(msgs::ErrorAction::IgnoreError) } = nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send_event.commitment_msg).unwrap_err() { - assert_eq!(err, "Failed to update ChannelMonitor"); - } else { panic!(); } - check_added_monitors!(nodes[1], 1); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - - *nodes[1].chan_monitor.update_ret.lock().unwrap() = Ok(()); - nodes[1].node.test_restore_channel_monitor(); - check_added_monitors!(nodes[1], 1); - let responses = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(responses.len(), 2); - - match responses[0] { - MessageSendEvent::SendRevokeAndACK { ref msg, ref node_id } => { - assert_eq!(*node_id, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &msg).unwrap(); - check_added_monitors!(nodes[0], 1); - }, - _ => panic!("Unexpected event"), - } - match responses[1] { - MessageSendEvent::UpdateHTLCs { ref updates, ref node_id } => { - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fulfill_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - assert_eq!(*node_id, nodes[0].node.get_our_node_id()); - - *nodes[0].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); - if let msgs::HandleError { err, action: Some(msgs::ErrorAction::IgnoreError) } = nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &updates.commitment_signed).unwrap_err() { - assert_eq!(err, "Failed to update ChannelMonitor"); - } else { panic!(); } - check_added_monitors!(nodes[0], 1); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - }, - _ => panic!("Unexpected event"), - } - - *nodes[0].chan_monitor.update_ret.lock().unwrap() = Ok(()); - nodes[0].node.test_restore_channel_monitor(); - check_added_monitors!(nodes[0], 1); - - let final_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &final_raa).unwrap(); - check_added_monitors!(nodes[1], 1); - - let mut events = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PendingHTLCsForwardable { .. } => { }, - _ => panic!("Unexpected event"), - }; - nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now(); - nodes[1].node.process_pending_htlc_forwards(); - - events = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentReceived { payment_hash, amt } => { - assert_eq!(payment_hash, our_payment_hash); - assert_eq!(amt, 1000000); - }, - _ => panic!("Unexpected event"), - }; - - claim_payment(&nodes[0], &[&nodes[1]], payment_preimage); - } - - fn do_test_monitor_update_fail_raa(test_ignore_second_cs: bool) { - // Tests handling of a monitor update failure when processing an incoming RAA - let mut nodes = create_network(3); - create_announced_chan_between_nodes(&nodes, 0, 1); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); - - // Rebalance a bit so that we can send backwards from 2 to 1. - send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 5000000); - - // Route a first payment that we'll fail backwards - let (_, payment_hash_1) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000); - - // Fail the payment backwards, failing the monitor update on nodes[1]'s receipt of the RAA - assert!(nodes[2].node.fail_htlc_backwards(&payment_hash_1, 0)); - check_added_monitors!(nodes[2], 1); - - let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fulfill_htlcs.is_empty()); - assert_eq!(updates.update_fail_htlcs.len(), 1); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap(); - - let bs_revoke_and_ack = commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false, true, false, true); - check_added_monitors!(nodes[0], 0); - - // While the second channel is AwaitingRAA, forward a second payment to get it into the - // holding cell. - let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]); - let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); - nodes[0].node.send_payment(route, payment_hash_2).unwrap(); - check_added_monitors!(nodes[0], 1); - - let mut send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0)); - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]).unwrap(); - commitment_signed_dance!(nodes[1], nodes[0], send_event.commitment_msg, false); - - let events_1 = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events_1.len(), 1); - match events_1[0] { - Event::PendingHTLCsForwardable { .. } => { }, - _ => panic!("Unexpected event"), - }; - - nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now(); - nodes[1].node.process_pending_htlc_forwards(); - check_added_monitors!(nodes[1], 0); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - - // Now fail monitor updating. - *nodes[1].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); - if let msgs::HandleError { err, action: Some(msgs::ErrorAction::IgnoreError) } = nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack).unwrap_err() { - assert_eq!(err, "Failed to update ChannelMonitor"); - } else { panic!(); } - assert!(nodes[1].node.get_and_clear_pending_events().is_empty()); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - check_added_monitors!(nodes[1], 1); - - // Attempt to forward a third payment but fail due to the second channel being unavailable - // for forwarding. - - let (_, payment_hash_3) = get_payment_preimage_hash!(nodes[0]); - let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); - nodes[0].node.send_payment(route, payment_hash_3).unwrap(); - check_added_monitors!(nodes[0], 1); - - *nodes[1].chan_monitor.update_ret.lock().unwrap() = Ok(()); // We succeed in updating the monitor for the first channel - send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0)); - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]).unwrap(); - commitment_signed_dance!(nodes[1], nodes[0], send_event.commitment_msg, false, true); - check_added_monitors!(nodes[1], 0); - - let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events_2.len(), 1); - match events_2.remove(0) { - MessageSendEvent::UpdateHTLCs { node_id, updates } => { - assert_eq!(node_id, nodes[0].node.get_our_node_id()); - assert!(updates.update_fulfill_htlcs.is_empty()); - assert_eq!(updates.update_fail_htlcs.len(), 1); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - - nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap(); - commitment_signed_dance!(nodes[0], nodes[1], updates.commitment_signed, false, true); - - let msg_events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(msg_events.len(), 1); - match msg_events[0] { - MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => { - assert_eq!(msg.contents.short_channel_id, chan_2.0.contents.short_channel_id); - assert_eq!(msg.contents.flags & 2, 2); // temp disabled - }, - _ => panic!("Unexpected event"), - } - - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - if let Event::PaymentFailed { payment_hash, rejected_by_dest, .. } = events[0] { - assert_eq!(payment_hash, payment_hash_3); - assert!(!rejected_by_dest); - } else { panic!("Unexpected event!"); } - }, - _ => panic!("Unexpected event type!"), - }; - - let (payment_preimage_4, payment_hash_4) = if test_ignore_second_cs { - // Try to route another payment backwards from 2 to make sure 1 holds off on responding - let (payment_preimage_4, payment_hash_4) = get_payment_preimage_hash!(nodes[0]); - let route = nodes[2].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); - nodes[2].node.send_payment(route, payment_hash_4).unwrap(); - check_added_monitors!(nodes[2], 1); - - send_event = SendEvent::from_event(nodes[2].node.get_and_clear_pending_msg_events().remove(0)); - nodes[1].node.handle_update_add_htlc(&nodes[2].node.get_our_node_id(), &send_event.msgs[0]).unwrap(); - if let Err(msgs::HandleError{err, action: Some(msgs::ErrorAction::IgnoreError) }) = nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &send_event.commitment_msg) { - assert_eq!(err, "Previous monitor update failure prevented generation of RAA"); - } else { panic!(); } - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - assert!(nodes[1].node.get_and_clear_pending_events().is_empty()); - (Some(payment_preimage_4), Some(payment_hash_4)) - } else { (None, None) }; - - // Restore monitor updating, ensuring we immediately get a fail-back update and a - // update_add update. - *nodes[1].chan_monitor.update_ret.lock().unwrap() = Ok(()); - nodes[1].node.test_restore_channel_monitor(); - check_added_monitors!(nodes[1], 2); - - let mut events_3 = nodes[1].node.get_and_clear_pending_msg_events(); - if test_ignore_second_cs { - assert_eq!(events_3.len(), 3); - } else { - assert_eq!(events_3.len(), 2); - } - - // Note that the ordering of the events for different nodes is non-prescriptive, though the - // ordering of the two events that both go to nodes[2] have to stay in the same order. - let messages_a = match events_3.pop().unwrap() { - MessageSendEvent::UpdateHTLCs { node_id, mut updates } => { - assert_eq!(node_id, nodes[0].node.get_our_node_id()); - assert!(updates.update_fulfill_htlcs.is_empty()); - assert_eq!(updates.update_fail_htlcs.len(), 1); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - (updates.update_fail_htlcs.remove(0), updates.commitment_signed) - }, - _ => panic!("Unexpected event type!"), - }; - let raa = if test_ignore_second_cs { - match events_3.remove(1) { - MessageSendEvent::SendRevokeAndACK { node_id, msg } => { - assert_eq!(node_id, nodes[2].node.get_our_node_id()); - Some(msg.clone()) - }, - _ => panic!("Unexpected event"), - } - } else { None }; - let send_event_b = SendEvent::from_event(events_3.remove(0)); - assert_eq!(send_event_b.node_id, nodes[2].node.get_our_node_id()); - - // Now deliver the new messages... - - nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &messages_a.0).unwrap(); - commitment_signed_dance!(nodes[0], nodes[1], messages_a.1, false); - let events_4 = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events_4.len(), 1); - if let Event::PaymentFailed { payment_hash, rejected_by_dest, .. } = events_4[0] { - assert_eq!(payment_hash, payment_hash_1); - assert!(rejected_by_dest); - } else { panic!("Unexpected event!"); } - - nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_event_b.msgs[0]).unwrap(); - if test_ignore_second_cs { - nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &send_event_b.commitment_msg).unwrap(); - check_added_monitors!(nodes[2], 1); - let bs_revoke_and_ack = get_event_msg!(nodes[2], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &raa.unwrap()).unwrap(); - check_added_monitors!(nodes[2], 1); - let bs_cs = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - assert!(bs_cs.update_add_htlcs.is_empty()); - assert!(bs_cs.update_fail_htlcs.is_empty()); - assert!(bs_cs.update_fail_malformed_htlcs.is_empty()); - assert!(bs_cs.update_fulfill_htlcs.is_empty()); - assert!(bs_cs.update_fee.is_none()); - - nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); - check_added_monitors!(nodes[1], 1); - let as_cs = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id()); - assert!(as_cs.update_add_htlcs.is_empty()); - assert!(as_cs.update_fail_htlcs.is_empty()); - assert!(as_cs.update_fail_malformed_htlcs.is_empty()); - assert!(as_cs.update_fulfill_htlcs.is_empty()); - assert!(as_cs.update_fee.is_none()); - - nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_cs.commitment_signed).unwrap(); - check_added_monitors!(nodes[1], 1); - let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id()); - - nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_cs.commitment_signed).unwrap(); - check_added_monitors!(nodes[2], 1); - let bs_second_raa = get_event_msg!(nodes[2], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); - - nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa).unwrap(); - check_added_monitors!(nodes[2], 1); - assert!(nodes[2].node.get_and_clear_pending_msg_events().is_empty()); - - nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_second_raa).unwrap(); - check_added_monitors!(nodes[1], 1); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - } else { - commitment_signed_dance!(nodes[2], nodes[1], send_event_b.commitment_msg, false); - } - - let events_5 = nodes[2].node.get_and_clear_pending_events(); - assert_eq!(events_5.len(), 1); - match events_5[0] { - Event::PendingHTLCsForwardable { .. } => { }, - _ => panic!("Unexpected event"), - }; - - nodes[2].node.channel_state.lock().unwrap().next_forward = Instant::now(); - nodes[2].node.process_pending_htlc_forwards(); - - let events_6 = nodes[2].node.get_and_clear_pending_events(); - assert_eq!(events_6.len(), 1); - match events_6[0] { - Event::PaymentReceived { payment_hash, .. } => { assert_eq!(payment_hash, payment_hash_2); }, - _ => panic!("Unexpected event"), - }; - - if test_ignore_second_cs { - let events_7 = nodes[1].node.get_and_clear_pending_events(); - assert_eq!(events_7.len(), 1); - match events_7[0] { - Event::PendingHTLCsForwardable { .. } => { }, - _ => panic!("Unexpected event"), - }; - - nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now(); - nodes[1].node.process_pending_htlc_forwards(); - check_added_monitors!(nodes[1], 1); - - send_event = SendEvent::from_node(&nodes[1]); - assert_eq!(send_event.node_id, nodes[0].node.get_our_node_id()); - assert_eq!(send_event.msgs.len(), 1); - nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_event.msgs[0]).unwrap(); - commitment_signed_dance!(nodes[0], nodes[1], send_event.commitment_msg, false); - - let events_8 = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events_8.len(), 1); - match events_8[0] { - Event::PendingHTLCsForwardable { .. } => { }, - _ => panic!("Unexpected event"), - }; - - nodes[0].node.channel_state.lock().unwrap().next_forward = Instant::now(); - nodes[0].node.process_pending_htlc_forwards(); - - let events_9 = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events_9.len(), 1); - match events_9[0] { - Event::PaymentReceived { payment_hash, .. } => assert_eq!(payment_hash, payment_hash_4.unwrap()), - _ => panic!("Unexpected event"), - }; - claim_payment(&nodes[2], &[&nodes[1], &nodes[0]], payment_preimage_4.unwrap()); - } - - claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage_2); - } - - #[test] - fn test_monitor_update_fail_raa() { - do_test_monitor_update_fail_raa(false); - do_test_monitor_update_fail_raa(true); - } - - #[test] - fn test_monitor_update_fail_reestablish() { - // Simple test for message retransmission after monitor update failure on - // channel_reestablish generating a monitor update (which comes from freeing holding cell - // HTLCs). - let mut nodes = create_network(3); - create_announced_chan_between_nodes(&nodes, 0, 1); - create_announced_chan_between_nodes(&nodes, 1, 2); - - let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000); - - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - - assert!(nodes[2].node.claim_funds(our_payment_preimage)); - check_added_monitors!(nodes[2], 1); - let mut updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - assert_eq!(updates.update_fulfill_htlcs.len(), 1); - nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap(); - check_added_monitors!(nodes[1], 1); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false); - - *nodes[1].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); - nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); - nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); - - let as_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id()); - let bs_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()); - - nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish).unwrap(); - - if let msgs::HandleError { err, action: Some(msgs::ErrorAction::IgnoreError) } = nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &as_reestablish).unwrap_err() { - assert_eq!(err, "Failed to update ChannelMonitor"); - } else { panic!(); } - check_added_monitors!(nodes[1], 1); - - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - - nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); - nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); - - assert!(as_reestablish == get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id())); - assert!(bs_reestablish == get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id())); - - nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish).unwrap(); - - nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &as_reestablish).unwrap(); - check_added_monitors!(nodes[1], 0); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - - *nodes[1].chan_monitor.update_ret.lock().unwrap() = Ok(()); - nodes[1].node.test_restore_channel_monitor(); - check_added_monitors!(nodes[1], 1); - - updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - assert_eq!(updates.update_fulfill_htlcs.len(), 1); - nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap(); - commitment_signed_dance!(nodes[0], nodes[1], updates.commitment_signed, false); - - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentSent { payment_preimage, .. } => assert_eq!(payment_preimage, our_payment_preimage), - _ => panic!("Unexpected event"), - } - } - - #[test] - fn test_invalid_channel_announcement() { - //Test BOLT 7 channel_announcement msg requirement for final node, gather data to build customed channel_announcement msgs - let secp_ctx = Secp256k1::new(); - let nodes = create_network(2); - - let chan_announcement = create_chan_between_nodes(&nodes[0], &nodes[1]); - - let a_channel_lock = nodes[0].node.channel_state.lock().unwrap(); - let b_channel_lock = nodes[1].node.channel_state.lock().unwrap(); - let as_chan = a_channel_lock.by_id.get(&chan_announcement.3).unwrap(); - let bs_chan = b_channel_lock.by_id.get(&chan_announcement.3).unwrap(); - - let _ = nodes[0].router.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id : as_chan.get_short_channel_id().unwrap(), is_permanent: false } ); - - let as_bitcoin_key = PublicKey::from_secret_key(&secp_ctx, &as_chan.get_local_keys().funding_key); - let bs_bitcoin_key = PublicKey::from_secret_key(&secp_ctx, &bs_chan.get_local_keys().funding_key); - - let as_network_key = nodes[0].node.get_our_node_id(); - let bs_network_key = nodes[1].node.get_our_node_id(); - - let were_node_one = as_bitcoin_key.serialize()[..] < bs_bitcoin_key.serialize()[..]; - - let mut chan_announcement; - - macro_rules! dummy_unsigned_msg { - () => { - msgs::UnsignedChannelAnnouncement { - features: msgs::GlobalFeatures::new(), - chain_hash: genesis_block(Network::Testnet).header.bitcoin_hash(), - short_channel_id: as_chan.get_short_channel_id().unwrap(), - node_id_1: if were_node_one { as_network_key } else { bs_network_key }, - node_id_2: if were_node_one { bs_network_key } else { as_network_key }, - bitcoin_key_1: if were_node_one { as_bitcoin_key } else { bs_bitcoin_key }, - bitcoin_key_2: if were_node_one { bs_bitcoin_key } else { as_bitcoin_key }, - excess_data: Vec::new(), - }; - } - } - - macro_rules! sign_msg { - ($unsigned_msg: expr) => { - let msghash = Message::from_slice(&Sha256dHash::from_data(&$unsigned_msg.encode()[..])[..]).unwrap(); - let as_bitcoin_sig = secp_ctx.sign(&msghash, &as_chan.get_local_keys().funding_key); - let bs_bitcoin_sig = secp_ctx.sign(&msghash, &bs_chan.get_local_keys().funding_key); - let as_node_sig = secp_ctx.sign(&msghash, &nodes[0].node.our_network_key); - let bs_node_sig = secp_ctx.sign(&msghash, &nodes[1].node.our_network_key); - chan_announcement = msgs::ChannelAnnouncement { - node_signature_1 : if were_node_one { as_node_sig } else { bs_node_sig}, - node_signature_2 : if were_node_one { bs_node_sig } else { as_node_sig}, - bitcoin_signature_1: if were_node_one { as_bitcoin_sig } else { bs_bitcoin_sig }, - bitcoin_signature_2 : if were_node_one { bs_bitcoin_sig } else { as_bitcoin_sig }, - contents: $unsigned_msg - } - } - } - - let unsigned_msg = dummy_unsigned_msg!(); - sign_msg!(unsigned_msg); - assert_eq!(nodes[0].router.handle_channel_announcement(&chan_announcement).unwrap(), true); - let _ = nodes[0].router.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id : as_chan.get_short_channel_id().unwrap(), is_permanent: false } ); - - // Configured with Network::Testnet - let mut unsigned_msg = dummy_unsigned_msg!(); - unsigned_msg.chain_hash = genesis_block(Network::Bitcoin).header.bitcoin_hash(); - sign_msg!(unsigned_msg); - assert!(nodes[0].router.handle_channel_announcement(&chan_announcement).is_err()); - - let mut unsigned_msg = dummy_unsigned_msg!(); - unsigned_msg.chain_hash = Sha256dHash::from_data(&[1,2,3,4,5,6,7,8,9]); - sign_msg!(unsigned_msg); - assert!(nodes[0].router.handle_channel_announcement(&chan_announcement).is_err()); - } - - struct VecWriter(Vec); - impl Writer for VecWriter { - fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> { - self.0.extend_from_slice(buf); - Ok(()) - } - fn size_hint(&mut self, size: usize) { - self.0.reserve_exact(size); - } - } - - #[test] - fn test_no_txn_manager_serialize_deserialize() { - let mut nodes = create_network(2); - - let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001); - - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - - let nodes_0_serialized = nodes[0].node.encode(); - let mut chan_0_monitor_serialized = VecWriter(Vec::new()); - nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap(); - - nodes[0].chan_monitor = Arc::new(test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), Arc::new(test_utils::TestLogger::new()))); - let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..]; - let (_, chan_0_monitor) = <(Sha256dHash, ChannelMonitor)>::read(&mut chan_0_monitor_read, Arc::new(test_utils::TestLogger::new())).unwrap(); - assert!(chan_0_monitor_read.is_empty()); - - let mut nodes_0_read = &nodes_0_serialized[..]; - let config = UserConfig::new(); - let keys_manager = Arc::new(keysinterface::KeysManager::new(&nodes[0].node_seed, Network::Testnet, Arc::new(test_utils::TestLogger::new()))); - let (_, nodes_0_deserialized) = { - let mut channel_monitors = HashMap::new(); - channel_monitors.insert(chan_0_monitor.get_funding_txo().unwrap(), &chan_0_monitor); - <(Sha256dHash, ChannelManager)>::read(&mut nodes_0_read, ChannelManagerReadArgs { - default_config: config, - keys_manager, - fee_estimator: Arc::new(test_utils::TestFeeEstimator { sat_per_kw: 253 }), - monitor: nodes[0].chan_monitor.clone(), - chain_monitor: nodes[0].chain_monitor.clone(), - tx_broadcaster: nodes[0].tx_broadcaster.clone(), - logger: Arc::new(test_utils::TestLogger::new()), - channel_monitors: &channel_monitors, - }).unwrap() - }; - assert!(nodes_0_read.is_empty()); - - assert!(nodes[0].chan_monitor.add_update_monitor(chan_0_monitor.get_funding_txo().unwrap(), chan_0_monitor).is_ok()); - nodes[0].node = Arc::new(nodes_0_deserialized); - let nodes_0_as_listener: Arc = nodes[0].node.clone(); - nodes[0].chain_monitor.register_listener(Arc::downgrade(&nodes_0_as_listener)); - assert_eq!(nodes[0].node.list_channels().len(), 1); - check_added_monitors!(nodes[0], 1); - - nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); - let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]); - nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); - let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]); - - nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]).unwrap(); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]).unwrap(); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - - let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx); - let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked); - for node in nodes.iter() { - assert!(node.router.handle_channel_announcement(&announcement).unwrap()); - node.router.handle_channel_update(&as_update).unwrap(); - node.router.handle_channel_update(&bs_update).unwrap(); - } - - send_payment(&nodes[0], &[&nodes[1]], 1000000); - } - - #[test] - fn test_simple_manager_serialize_deserialize() { - let mut nodes = create_network(2); - create_announced_chan_between_nodes(&nodes, 0, 1); - - let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000); - let (_, our_payment_hash) = route_payment(&nodes[0], &[&nodes[1]], 1000000); - - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - - let nodes_0_serialized = nodes[0].node.encode(); - let mut chan_0_monitor_serialized = VecWriter(Vec::new()); - nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap(); - - nodes[0].chan_monitor = Arc::new(test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), Arc::new(test_utils::TestLogger::new()))); - let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..]; - let (_, chan_0_monitor) = <(Sha256dHash, ChannelMonitor)>::read(&mut chan_0_monitor_read, Arc::new(test_utils::TestLogger::new())).unwrap(); - assert!(chan_0_monitor_read.is_empty()); - - let mut nodes_0_read = &nodes_0_serialized[..]; - let keys_manager = Arc::new(keysinterface::KeysManager::new(&nodes[0].node_seed, Network::Testnet, Arc::new(test_utils::TestLogger::new()))); - let (_, nodes_0_deserialized) = { - let mut channel_monitors = HashMap::new(); - channel_monitors.insert(chan_0_monitor.get_funding_txo().unwrap(), &chan_0_monitor); - <(Sha256dHash, ChannelManager)>::read(&mut nodes_0_read, ChannelManagerReadArgs { - default_config: UserConfig::new(), - keys_manager, - fee_estimator: Arc::new(test_utils::TestFeeEstimator { sat_per_kw: 253 }), - monitor: nodes[0].chan_monitor.clone(), - chain_monitor: nodes[0].chain_monitor.clone(), - tx_broadcaster: nodes[0].tx_broadcaster.clone(), - logger: Arc::new(test_utils::TestLogger::new()), - channel_monitors: &channel_monitors, - }).unwrap() - }; - assert!(nodes_0_read.is_empty()); - - assert!(nodes[0].chan_monitor.add_update_monitor(chan_0_monitor.get_funding_txo().unwrap(), chan_0_monitor).is_ok()); - nodes[0].node = Arc::new(nodes_0_deserialized); - check_added_monitors!(nodes[0], 1); - - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - - fail_payment(&nodes[0], &[&nodes[1]], our_payment_hash); - claim_payment(&nodes[0], &[&nodes[1]], our_payment_preimage); - } - - #[test] - fn test_manager_serialize_deserialize_inconsistent_monitor() { - // Test deserializing a ChannelManager with a out-of-date ChannelMonitor - let mut nodes = create_network(4); - create_announced_chan_between_nodes(&nodes, 0, 1); - create_announced_chan_between_nodes(&nodes, 2, 0); - let (_, _, channel_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 3); - - let (our_payment_preimage, _) = route_payment(&nodes[2], &[&nodes[0], &nodes[1]], 1000000); - - // Serialize the ChannelManager here, but the monitor we keep up-to-date - let nodes_0_serialized = nodes[0].node.encode(); - - route_payment(&nodes[0], &[&nodes[3]], 1000000); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - nodes[2].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - nodes[3].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - - // Now the ChannelMonitor (which is now out-of-sync with ChannelManager for channel w/ - // nodes[3]) - let mut node_0_monitors_serialized = Vec::new(); - for monitor in nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter() { - let mut writer = VecWriter(Vec::new()); - monitor.1.write_for_disk(&mut writer).unwrap(); - node_0_monitors_serialized.push(writer.0); - } - - nodes[0].chan_monitor = Arc::new(test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), Arc::new(test_utils::TestLogger::new()))); - let mut node_0_monitors = Vec::new(); - for serialized in node_0_monitors_serialized.iter() { - let mut read = &serialized[..]; - let (_, monitor) = <(Sha256dHash, ChannelMonitor)>::read(&mut read, Arc::new(test_utils::TestLogger::new())).unwrap(); - assert!(read.is_empty()); - node_0_monitors.push(monitor); - } - - let mut nodes_0_read = &nodes_0_serialized[..]; - let keys_manager = Arc::new(keysinterface::KeysManager::new(&nodes[0].node_seed, Network::Testnet, Arc::new(test_utils::TestLogger::new()))); - let (_, nodes_0_deserialized) = <(Sha256dHash, ChannelManager)>::read(&mut nodes_0_read, ChannelManagerReadArgs { - default_config: UserConfig::new(), - keys_manager, - fee_estimator: Arc::new(test_utils::TestFeeEstimator { sat_per_kw: 253 }), - monitor: nodes[0].chan_monitor.clone(), - chain_monitor: nodes[0].chain_monitor.clone(), - tx_broadcaster: nodes[0].tx_broadcaster.clone(), - logger: Arc::new(test_utils::TestLogger::new()), - channel_monitors: &node_0_monitors.iter().map(|monitor| { (monitor.get_funding_txo().unwrap(), monitor) }).collect(), - }).unwrap(); - assert!(nodes_0_read.is_empty()); - - { // Channel close should result in a commitment tx and an HTLC tx - let txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(txn.len(), 2); - assert_eq!(txn[0].input[0].previous_output.txid, funding_tx.txid()); - assert_eq!(txn[1].input[0].previous_output.txid, txn[0].txid()); - } - - for monitor in node_0_monitors.drain(..) { - assert!(nodes[0].chan_monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor).is_ok()); - check_added_monitors!(nodes[0], 1); - } - nodes[0].node = Arc::new(nodes_0_deserialized); - - // nodes[1] and nodes[2] have no lost state with nodes[0]... - reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - reconnect_nodes(&nodes[0], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - //... and we can even still claim the payment! - claim_payment(&nodes[2], &[&nodes[0], &nodes[1]], our_payment_preimage); - - nodes[3].node.peer_connected(&nodes[0].node.get_our_node_id()); - let reestablish = get_event_msg!(nodes[3], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()); - nodes[0].node.peer_connected(&nodes[3].node.get_our_node_id()); - if let Err(msgs::HandleError { action: Some(msgs::ErrorAction::SendErrorMessage { msg }), .. }) = nodes[0].node.handle_channel_reestablish(&nodes[3].node.get_our_node_id(), &reestablish) { - assert_eq!(msg.channel_id, channel_id); - } else { panic!("Unexpected result"); } - } - - macro_rules! check_spendable_outputs { - ($node: expr, $der_idx: expr) => { - { - let events = $node.chan_monitor.simple_monitor.get_and_clear_pending_events(); - let mut txn = Vec::new(); - for event in events { - match event { - Event::SpendableOutputs { ref outputs } => { - for outp in outputs { - match *outp { - SpendableOutputDescriptor::DynamicOutputP2WPKH { ref outpoint, ref key, ref output } => { - let input = TxIn { - previous_output: outpoint.clone(), - script_sig: Script::new(), - sequence: 0, - witness: Vec::new(), - }; - let outp = TxOut { - script_pubkey: Builder::new().push_opcode(opcodes::All::OP_RETURN).into_script(), - value: output.value, - }; - let mut spend_tx = Transaction { - version: 2, - lock_time: 0, - input: vec![input], - output: vec![outp], - }; - let secp_ctx = Secp256k1::new(); - let remotepubkey = PublicKey::from_secret_key(&secp_ctx, &key); - let witness_script = Address::p2pkh(&remotepubkey, Network::Testnet).script_pubkey(); - let sighash = Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx.input[0], &witness_script, output.value)[..]).unwrap(); - let remotesig = secp_ctx.sign(&sighash, key); - spend_tx.input[0].witness.push(remotesig.serialize_der(&secp_ctx).to_vec()); - spend_tx.input[0].witness[0].push(SigHashType::All as u8); - spend_tx.input[0].witness.push(remotepubkey.serialize().to_vec()); - txn.push(spend_tx); - }, - SpendableOutputDescriptor::DynamicOutputP2WSH { ref outpoint, ref key, ref witness_script, ref to_self_delay, ref output } => { - let input = TxIn { - previous_output: outpoint.clone(), - script_sig: Script::new(), - sequence: *to_self_delay as u32, - witness: Vec::new(), - }; - let outp = TxOut { - script_pubkey: Builder::new().push_opcode(opcodes::All::OP_RETURN).into_script(), - value: output.value, - }; - let mut spend_tx = Transaction { - version: 2, - lock_time: 0, - input: vec![input], - output: vec![outp], - }; - let secp_ctx = Secp256k1::new(); - let sighash = Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx.input[0], witness_script, output.value)[..]).unwrap(); - let local_delaysig = secp_ctx.sign(&sighash, key); - spend_tx.input[0].witness.push(local_delaysig.serialize_der(&secp_ctx).to_vec()); - spend_tx.input[0].witness[0].push(SigHashType::All as u8); - spend_tx.input[0].witness.push(vec!(0)); - spend_tx.input[0].witness.push(witness_script.clone().into_bytes()); - txn.push(spend_tx); - }, - SpendableOutputDescriptor::StaticOutput { ref outpoint, ref output } => { - let secp_ctx = Secp256k1::new(); - let input = TxIn { - previous_output: outpoint.clone(), - script_sig: Script::new(), - sequence: 0, - witness: Vec::new(), - }; - let outp = TxOut { - script_pubkey: Builder::new().push_opcode(opcodes::All::OP_RETURN).into_script(), - value: output.value, - }; - let mut spend_tx = Transaction { - version: 2, - lock_time: 0, - input: vec![input], - output: vec![outp.clone()], - }; - let secret = { - match ExtendedPrivKey::new_master(&secp_ctx, Network::Testnet, &$node.node_seed) { - Ok(master_key) => { - match master_key.ckd_priv(&secp_ctx, ChildNumber::from_hardened_idx($der_idx)) { - Ok(key) => key, - Err(_) => panic!("Your RNG is busted"), - } - } - Err(_) => panic!("Your rng is busted"), - } - }; - let pubkey = ExtendedPubKey::from_private(&secp_ctx, &secret).public_key; - let witness_script = Address::p2pkh(&pubkey, Network::Testnet).script_pubkey(); - let sighash = Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx.input[0], &witness_script, output.value)[..]).unwrap(); - let sig = secp_ctx.sign(&sighash, &secret.secret_key); - spend_tx.input[0].witness.push(sig.serialize_der(&secp_ctx).to_vec()); - spend_tx.input[0].witness[0].push(SigHashType::All as u8); - spend_tx.input[0].witness.push(pubkey.serialize().to_vec()); - txn.push(spend_tx); - }, - } - } - }, - _ => panic!("Unexpected event"), - }; - } - txn - } - } - } - - #[test] - fn test_claim_sizeable_push_msat() { - // Incidentally test SpendableOutput event generation due to detection of to_local output on commitment tx - let nodes = create_network(2); - - let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000); - nodes[1].node.force_close_channel(&chan.2); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 1); - check_spends!(node_txn[0], chan.3.clone()); - assert_eq!(node_txn[0].output.len(), 2); // We can't force trimming of to_remote output as channel_reserve_satoshis block us to do so at channel opening - - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[0].clone()] }, 0); - let spend_txn = check_spendable_outputs!(nodes[1], 1); - assert_eq!(spend_txn.len(), 1); - check_spends!(spend_txn[0], node_txn[0].clone()); - } - - #[test] - fn test_claim_on_remote_sizeable_push_msat() { - // Same test as previous, just test on remote commitment tx, as per_commitment_point registration changes following you're funder/fundee and - // to_remote output is encumbered by a P2WPKH - - let nodes = create_network(2); - - let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000); - nodes[0].node.force_close_channel(&chan.2); - let events = nodes[0].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 1); - check_spends!(node_txn[0], chan.3.clone()); - assert_eq!(node_txn[0].output.len(), 2); // We can't force trimming of to_remote output as channel_reserve_satoshis block us to do so at channel opening - - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[0].clone()] }, 0); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - let spend_txn = check_spendable_outputs!(nodes[1], 1); - assert_eq!(spend_txn.len(), 2); - assert_eq!(spend_txn[0], spend_txn[1]); - check_spends!(spend_txn[0], node_txn[0].clone()); - } - - #[test] - fn test_claim_on_remote_revoked_sizeable_push_msat() { - // Same test as previous, just test on remote revoked commitment tx, as per_commitment_point registration changes following you're funder/fundee and - // to_remote output is encumbered by a P2WPKH - - let nodes = create_network(2); - - let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 59000000); - let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; - let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().last_local_commitment_txn.clone(); - assert_eq!(revoked_local_txn[0].input.len(), 1); - assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid()); - - claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage); - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - let spend_txn = check_spendable_outputs!(nodes[1], 1); - assert_eq!(spend_txn.len(), 4); - assert_eq!(spend_txn[0], spend_txn[2]); // to_remote output on revoked remote commitment_tx - check_spends!(spend_txn[0], revoked_local_txn[0].clone()); - assert_eq!(spend_txn[1], spend_txn[3]); // to_local output on local commitment tx - check_spends!(spend_txn[1], node_txn[0].clone()); - } - - #[test] - fn test_static_spendable_outputs_preimage_tx() { - let nodes = create_network(2); - - // Create some initial channels - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - - let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; - - let commitment_tx = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); - assert_eq!(commitment_tx[0].input.len(), 1); - assert_eq!(commitment_tx[0].input[0].previous_output.txid, chan_1.3.txid()); - - // Settle A's commitment tx on B's chain - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - assert!(nodes[1].node.claim_funds(payment_preimage)); - check_added_monitors!(nodes[1], 1); - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()] }, 1); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::UpdateHTLCs { .. } => {}, - _ => panic!("Unexpected event"), - } - match events[1] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexepected event"), - } - - // Check B's monitor was able to send back output descriptor event for preimage tx on A's commitment tx - let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); // ChannelManager : 1 (local commitment tx), ChannelMonitor: 2 (1 preimage tx) * 2 (block-rescan) - check_spends!(node_txn[0], commitment_tx[0].clone()); - assert_eq!(node_txn[0], node_txn[2]); - assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); - check_spends!(node_txn[1], chan_1.3.clone()); - - let spend_txn = check_spendable_outputs!(nodes[1], 1); // , 0, 0, 1, 1); - assert_eq!(spend_txn.len(), 2); - assert_eq!(spend_txn[0], spend_txn[1]); - check_spends!(spend_txn[0], node_txn[0].clone()); - } - - #[test] - fn test_static_spendable_outputs_justice_tx_revoked_commitment_tx() { - let nodes = create_network(2); - - // Create some initial channels - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - - let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; - let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.iter().next().unwrap().1.last_local_commitment_txn.clone(); - assert_eq!(revoked_local_txn[0].input.len(), 1); - assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid()); - - claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage); - - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 3); - assert_eq!(node_txn.pop().unwrap(), node_txn[0]); - assert_eq!(node_txn[0].input.len(), 2); - check_spends!(node_txn[0], revoked_local_txn[0].clone()); - - let spend_txn = check_spendable_outputs!(nodes[1], 1); - assert_eq!(spend_txn.len(), 2); - assert_eq!(spend_txn[0], spend_txn[1]); - check_spends!(spend_txn[0], node_txn[0].clone()); - } - - #[test] - fn test_static_spendable_outputs_justice_tx_revoked_htlc_timeout_tx() { - let nodes = create_network(2); - - // Create some initial channels - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - - let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; - let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); - assert_eq!(revoked_local_txn[0].input.len(), 1); - assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid()); - - claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage); - - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - // A will generate HTLC-Timeout from revoked commitment tx - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - let events = nodes[0].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - let revoked_htlc_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(revoked_htlc_txn.len(), 3); - assert_eq!(revoked_htlc_txn[0], revoked_htlc_txn[2]); - assert_eq!(revoked_htlc_txn[0].input.len(), 1); - assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); - check_spends!(revoked_htlc_txn[0], revoked_local_txn[0].clone()); - check_spends!(revoked_htlc_txn[1], chan_1.3.clone()); - - // B will generate justice tx from A's revoked commitment/HTLC tx - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] }, 1); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - - let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 4); - assert_eq!(node_txn[3].input.len(), 1); - check_spends!(node_txn[3], revoked_htlc_txn[0].clone()); - - // Check B's ChannelMonitor was able to generate the right spendable output descriptor - let spend_txn = check_spendable_outputs!(nodes[1], 1); - assert_eq!(spend_txn.len(), 3); - assert_eq!(spend_txn[0], spend_txn[1]); - check_spends!(spend_txn[0], node_txn[0].clone()); - check_spends!(spend_txn[2], node_txn[3].clone()); - } - - #[test] - fn test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx() { - let nodes = create_network(2); - - // Create some initial channels - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - - let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; - let revoked_local_txn = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); - assert_eq!(revoked_local_txn[0].input.len(), 1); - assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid()); - - claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage); - - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - // B will generate HTLC-Success from revoked commitment tx - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - - assert_eq!(revoked_htlc_txn.len(), 3); - assert_eq!(revoked_htlc_txn[0], revoked_htlc_txn[2]); - assert_eq!(revoked_htlc_txn[0].input.len(), 1); - assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); - check_spends!(revoked_htlc_txn[0], revoked_local_txn[0].clone()); - - // A will generate justice tx from B's revoked commitment/HTLC tx - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] }, 1); - let events = nodes[0].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - - let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 4); - assert_eq!(node_txn[3].input.len(), 1); - check_spends!(node_txn[3], revoked_htlc_txn[0].clone()); - - // Check A's ChannelMonitor was able to generate the right spendable output descriptor - let spend_txn = check_spendable_outputs!(nodes[0], 1); - assert_eq!(spend_txn.len(), 5); - assert_eq!(spend_txn[0], spend_txn[2]); - assert_eq!(spend_txn[1], spend_txn[3]); - check_spends!(spend_txn[0], revoked_local_txn[0].clone()); // spending to_remote output from revoked local tx - check_spends!(spend_txn[1], node_txn[2].clone()); // spending justice tx output from revoked local tx htlc received output - check_spends!(spend_txn[4], node_txn[3].clone()); // spending justice tx output on htlc success tx - } - - #[test] - fn test_onchain_to_onchain_claim() { - // Test that in case of channel closure, we detect the state of output thanks to - // ChainWatchInterface and claim HTLC on downstream peer's remote commitment tx. - // First, have C claim an HTLC against its own latest commitment transaction. - // Then, broadcast these to B, which should update the monitor downstream on the A<->B - // channel. - // Finally, check that B will claim the HTLC output if A's latest commitment transaction - // gets broadcast. - - let nodes = create_network(3); - - // Create some initial channels - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); - - // Rebalance the network a bit by relaying one payment through all the channels ... - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000); - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000); - - let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000); - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42}; - let commitment_tx = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone(); - check_spends!(commitment_tx[0], chan_2.3.clone()); - nodes[2].node.claim_funds(payment_preimage); - check_added_monitors!(nodes[2], 1); - let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert_eq!(updates.update_fulfill_htlcs.len(), 1); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - - nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1); - let events = nodes[2].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - - let c_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Success tx), ChannelMonitor : 1 (HTLC-Success tx) - assert_eq!(c_txn.len(), 3); - assert_eq!(c_txn[0], c_txn[2]); - assert_eq!(commitment_tx[0], c_txn[1]); - check_spends!(c_txn[1], chan_2.3.clone()); - check_spends!(c_txn[2], c_txn[1].clone()); - assert_eq!(c_txn[1].input[0].witness.clone().last().unwrap().len(), 71); - assert_eq!(c_txn[2].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); - assert!(c_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output - assert_eq!(c_txn[0].lock_time, 0); // Success tx - - // So we broadcast C's commitment tx and HTLC-Success on B's chain, we should successfully be able to extract preimage and update downstream monitor - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![c_txn[1].clone(), c_txn[2].clone()]}, 1); - { - let mut b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(b_txn.len(), 4); - assert_eq!(b_txn[0], b_txn[3]); - check_spends!(b_txn[1], chan_2.3); // B local commitment tx, issued by ChannelManager - check_spends!(b_txn[2], b_txn[1].clone()); // HTLC-Timeout on B local commitment tx, issued by ChannelManager - assert_eq!(b_txn[2].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); - assert!(b_txn[2].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output - assert_ne!(b_txn[2].lock_time, 0); // Timeout tx - check_spends!(b_txn[0], c_txn[1].clone()); // timeout tx on C remote commitment tx, issued by ChannelMonitor, * 2 due to block rescan - assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); - assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment - assert_ne!(b_txn[2].lock_time, 0); // Timeout tx - b_txn.clear(); - } - let msg_events = nodes[1].node.get_and_clear_pending_msg_events(); - check_added_monitors!(nodes[1], 1); - match msg_events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - match msg_events[1] { - MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, .. } } => { - assert!(update_add_htlcs.is_empty()); - assert!(update_fail_htlcs.is_empty()); - assert_eq!(update_fulfill_htlcs.len(), 1); - assert!(update_fail_malformed_htlcs.is_empty()); - assert_eq!(nodes[0].node.get_our_node_id(), *node_id); - }, - _ => panic!("Unexpected event"), - }; - // Broadcast A's commitment tx on B's chain to see if we are able to claim inbound HTLC with our HTLC-Success tx - let commitment_tx = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1); - let b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(b_txn.len(), 3); - check_spends!(b_txn[1], chan_1.3); // Local commitment tx, issued by ChannelManager - assert_eq!(b_txn[0], b_txn[2]); // HTLC-Success tx, issued by ChannelMonitor, * 2 due to block rescan - check_spends!(b_txn[0], commitment_tx[0].clone()); - assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); - assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment - assert_eq!(b_txn[2].lock_time, 0); // Success tx - let msg_events = nodes[1].node.get_and_clear_pending_msg_events(); - match msg_events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexpected event"), - } - } - - #[test] - fn test_duplicate_payment_hash_one_failure_one_success() { - // Topology : A --> B --> C - // We route 2 payments with same hash between B and C, one will be timeout, the other successfully claim - let mut nodes = create_network(3); - - create_announced_chan_between_nodes(&nodes, 0, 1); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); - - let (our_payment_preimage, duplicate_payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 900000); - *nodes[0].network_payment_count.borrow_mut() -= 1; - assert_eq!(route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 900000).1, duplicate_payment_hash); - - let commitment_txn = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone(); - assert_eq!(commitment_txn[0].input.len(), 1); - check_spends!(commitment_txn[0], chan_2.3.clone()); - - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_txn[0].clone()] }, 1); - let htlc_timeout_tx; - { // Extract one of the two HTLC-Timeout transaction - let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn.len(), 7); - assert_eq!(node_txn[0], node_txn[5]); - assert_eq!(node_txn[1], node_txn[6]); - check_spends!(node_txn[0], commitment_txn[0].clone()); - assert_eq!(node_txn[0].input.len(), 1); - check_spends!(node_txn[1], commitment_txn[0].clone()); - assert_eq!(node_txn[1].input.len(), 1); - assert_ne!(node_txn[0].input[0], node_txn[1].input[0]); - check_spends!(node_txn[2], chan_2.3.clone()); - check_spends!(node_txn[3], node_txn[2].clone()); - check_spends!(node_txn[4], node_txn[2].clone()); - htlc_timeout_tx = node_txn[1].clone(); - } - - let events = nodes[1].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexepected event"), - } - - nodes[2].node.claim_funds(our_payment_preimage); - nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_txn[0].clone()] }, 1); - check_added_monitors!(nodes[2], 2); - let events = nodes[2].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::UpdateHTLCs { .. } => {}, - _ => panic!("Unexpected event"), - } - match events[1] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexepected event"), - } - let htlc_success_txn: Vec<_> = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); - assert_eq!(htlc_success_txn.len(), 5); - check_spends!(htlc_success_txn[2], chan_2.3.clone()); - assert_eq!(htlc_success_txn[0], htlc_success_txn[3]); - assert_eq!(htlc_success_txn[0].input.len(), 1); - assert_eq!(htlc_success_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); - assert_eq!(htlc_success_txn[1], htlc_success_txn[4]); - assert_eq!(htlc_success_txn[1].input.len(), 1); - assert_eq!(htlc_success_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); - assert_ne!(htlc_success_txn[0].input[0], htlc_success_txn[1].input[0]); - check_spends!(htlc_success_txn[0], commitment_txn[0].clone()); - check_spends!(htlc_success_txn[1], commitment_txn[0].clone()); - - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![htlc_timeout_tx] }, 200); - let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - assert!(htlc_updates.update_add_htlcs.is_empty()); - assert_eq!(htlc_updates.update_fail_htlcs.len(), 1); - assert_eq!(htlc_updates.update_fail_htlcs[0].htlc_id, 1); - assert!(htlc_updates.update_fulfill_htlcs.is_empty()); - assert!(htlc_updates.update_fail_malformed_htlcs.is_empty()); - check_added_monitors!(nodes[1], 1); - - nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]).unwrap(); - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - { - commitment_signed_dance!(nodes[0], nodes[1], &htlc_updates.commitment_signed, false, true); - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelClosed { .. } } => { - }, - _ => { panic!("Unexpected event"); } - } - } - let events = nodes[0].node.get_and_clear_pending_events(); - match events[0] { - Event::PaymentFailed { ref payment_hash, .. } => { - assert_eq!(*payment_hash, duplicate_payment_hash); - } - _ => panic!("Unexpected event"), - } - - // Solve 2nd HTLC by broadcasting on B's chain HTLC-Success Tx from C - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![htlc_success_txn[0].clone()] }, 200); - let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert_eq!(updates.update_fulfill_htlcs.len(), 1); - assert_eq!(updates.update_fulfill_htlcs[0].htlc_id, 0); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - check_added_monitors!(nodes[1], 1); - - nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap(); - commitment_signed_dance!(nodes[0], nodes[1], &updates.commitment_signed, false); - - let events = nodes[0].node.get_and_clear_pending_events(); - match events[0] { - Event::PaymentSent { ref payment_preimage } => { - assert_eq!(*payment_preimage, our_payment_preimage); - } - _ => panic!("Unexpected event"), - } - } - - #[test] - fn test_dynamic_spendable_outputs_local_htlc_success_tx() { - let nodes = create_network(2); - - // Create some initial channels - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - - let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000).0; - let local_txn = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); - assert_eq!(local_txn[0].input.len(), 1); - check_spends!(local_txn[0], chan_1.3.clone()); - - // Give B knowledge of preimage to be able to generate a local HTLC-Success Tx - nodes[1].node.claim_funds(payment_preimage); - check_added_monitors!(nodes[1], 1); - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![local_txn[0].clone()] }, 1); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::UpdateHTLCs { .. } => {}, - _ => panic!("Unexpected event"), - } - match events[1] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexepected event"), - } - let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn[0].input.len(), 1); - assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); - check_spends!(node_txn[0], local_txn[0].clone()); - - // Verify that B is able to spend its own HTLC-Success tx thanks to spendable output event given back by its ChannelMonitor - let spend_txn = check_spendable_outputs!(nodes[1], 1); - assert_eq!(spend_txn.len(), 2); - check_spends!(spend_txn[0], node_txn[0].clone()); - check_spends!(spend_txn[1], node_txn[2].clone()); - } - - #[test] - fn test_dynamic_spendable_outputs_local_htlc_timeout_tx() { - let nodes = create_network(2); - - // Create some initial channels - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); - - route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000).0; - let local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); - assert_eq!(local_txn[0].input.len(), 1); - check_spends!(local_txn[0], chan_1.3.clone()); - - // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![local_txn[0].clone()] }, 200); - let events = nodes[0].node.get_and_clear_pending_msg_events(); - match events[0] { - MessageSendEvent::BroadcastChannelUpdate { .. } => {}, - _ => panic!("Unexepected event"), - } - let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); - assert_eq!(node_txn[0].input.len(), 1); - assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); - check_spends!(node_txn[0], local_txn[0].clone()); - - // Verify that A is able to spend its own HTLC-Timeout tx thanks to spendable output event given back by its ChannelMonitor - let spend_txn = check_spendable_outputs!(nodes[0], 1); - assert_eq!(spend_txn.len(), 8); - assert_eq!(spend_txn[0], spend_txn[2]); - assert_eq!(spend_txn[0], spend_txn[4]); - assert_eq!(spend_txn[0], spend_txn[6]); - assert_eq!(spend_txn[1], spend_txn[3]); - assert_eq!(spend_txn[1], spend_txn[5]); - assert_eq!(spend_txn[1], spend_txn[7]); - check_spends!(spend_txn[0], local_txn[0].clone()); - check_spends!(spend_txn[1], node_txn[0].clone()); - } - - #[test] - fn test_static_output_closing_tx() { - let nodes = create_network(2); - - let chan = create_announced_chan_between_nodes(&nodes, 0, 1); - - send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000); - let closing_tx = close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true).2; - - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![closing_tx.clone()] }, 1); - let spend_txn = check_spendable_outputs!(nodes[0], 2); - assert_eq!(spend_txn.len(), 1); - check_spends!(spend_txn[0], closing_tx.clone()); - - nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![closing_tx.clone()] }, 1); - let spend_txn = check_spendable_outputs!(nodes[1], 2); - assert_eq!(spend_txn.len(), 1); - check_spends!(spend_txn[0], closing_tx); - } - - fn run_onion_failure_test(_name: &str, test_case: u8, nodes: &Vec, route: &Route, payment_hash: &PaymentHash, callback_msg: F1, callback_node: F2, expected_retryable: bool, expected_error_code: Option, expected_channel_update: Option) - where F1: for <'a> FnMut(&'a mut msgs::UpdateAddHTLC), - F2: FnMut(), - { - run_onion_failure_test_with_fail_intercept(_name, test_case, nodes, route, payment_hash, callback_msg, |_|{}, callback_node, expected_retryable, expected_error_code, expected_channel_update); - } - - // test_case - // 0: node1 fail backward - // 1: final node fail backward - // 2: payment completed but the user reject the payment - // 3: final node fail backward (but tamper onion payloads from node0) - // 100: trigger error in the intermediate node and tamper returnning fail_htlc - // 200: trigger error in the final node and tamper returnning fail_htlc - fn run_onion_failure_test_with_fail_intercept(_name: &str, test_case: u8, nodes: &Vec, route: &Route, payment_hash: &PaymentHash, mut callback_msg: F1, mut callback_fail: F2, mut callback_node: F3, expected_retryable: bool, expected_error_code: Option, expected_channel_update: Option) - where F1: for <'a> FnMut(&'a mut msgs::UpdateAddHTLC), - F2: for <'a> FnMut(&'a mut msgs::UpdateFailHTLC), - F3: FnMut(), - { - use ln::msgs::HTLCFailChannelUpdate; - - // reset block height - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - for ix in 0..nodes.len() { - nodes[ix].chain_monitor.block_connected_checked(&header, 1, &Vec::new()[..], &[0; 0]); - } - - macro_rules! expect_event { - ($node: expr, $event_type: path) => {{ - let events = $node.node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - $event_type { .. } => {}, - _ => panic!("Unexpected event"), - } - }} - } - - macro_rules! expect_htlc_forward { - ($node: expr) => {{ - expect_event!($node, Event::PendingHTLCsForwardable); - $node.node.channel_state.lock().unwrap().next_forward = Instant::now(); - $node.node.process_pending_htlc_forwards(); - }} - } - - // 0 ~~> 2 send payment - nodes[0].node.send_payment(route.clone(), payment_hash.clone()).unwrap(); - check_added_monitors!(nodes[0], 1); - let update_0 = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - // temper update_add (0 => 1) - let mut update_add_0 = update_0.update_add_htlcs[0].clone(); - if test_case == 0 || test_case == 3 || test_case == 100 { - callback_msg(&mut update_add_0); - callback_node(); - } - // 0 => 1 update_add & CS - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &update_add_0).unwrap(); - commitment_signed_dance!(nodes[1], nodes[0], &update_0.commitment_signed, false, true); - - let update_1_0 = match test_case { - 0|100 => { // intermediate node failure; fail backward to 0 - let update_1_0 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - assert!(update_1_0.update_fail_htlcs.len()+update_1_0.update_fail_malformed_htlcs.len()==1 && (update_1_0.update_fail_htlcs.len()==1 || update_1_0.update_fail_malformed_htlcs.len()==1)); - update_1_0 - }, - 1|2|3|200 => { // final node failure; forwarding to 2 - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - // forwarding on 1 - if test_case != 200 { - callback_node(); - } - expect_htlc_forward!(&nodes[1]); - - let update_1 = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id()); - check_added_monitors!(&nodes[1], 1); - assert_eq!(update_1.update_add_htlcs.len(), 1); - // tamper update_add (1 => 2) - let mut update_add_1 = update_1.update_add_htlcs[0].clone(); - if test_case != 3 && test_case != 200 { - callback_msg(&mut update_add_1); - } - - // 1 => 2 - nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &update_add_1).unwrap(); - commitment_signed_dance!(nodes[2], nodes[1], update_1.commitment_signed, false, true); - - if test_case == 2 || test_case == 200 { - expect_htlc_forward!(&nodes[2]); - expect_event!(&nodes[2], Event::PaymentReceived); - callback_node(); - } - - let update_2_1 = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - if test_case == 2 || test_case == 200 { - check_added_monitors!(&nodes[2], 1); - } - assert!(update_2_1.update_fail_htlcs.len() == 1); - - let mut fail_msg = update_2_1.update_fail_htlcs[0].clone(); - if test_case == 200 { - callback_fail(&mut fail_msg); - } - - // 2 => 1 - nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &fail_msg).unwrap(); - commitment_signed_dance!(nodes[1], nodes[2], update_2_1.commitment_signed, true, true); - - // backward fail on 1 - let update_1_0 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - assert!(update_1_0.update_fail_htlcs.len() == 1); - update_1_0 - }, - _ => unreachable!(), - }; - - // 1 => 0 commitment_signed_dance - if update_1_0.update_fail_htlcs.len() > 0 { - let mut fail_msg = update_1_0.update_fail_htlcs[0].clone(); - if test_case == 100 { - callback_fail(&mut fail_msg); - } - nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &fail_msg).unwrap(); - } else { - nodes[0].node.handle_update_fail_malformed_htlc(&nodes[1].node.get_our_node_id(), &update_1_0.update_fail_malformed_htlcs[0]).unwrap(); - }; - - commitment_signed_dance!(nodes[0], nodes[1], update_1_0.commitment_signed, false, true); - - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - if let &Event::PaymentFailed { payment_hash:_, ref rejected_by_dest, ref error_code } = &events[0] { - assert_eq!(*rejected_by_dest, !expected_retryable); - assert_eq!(*error_code, expected_error_code); - } else { - panic!("Uexpected event"); - } - - let events = nodes[0].node.get_and_clear_pending_msg_events(); - if expected_channel_update.is_some() { - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::PaymentFailureNetworkUpdate { ref update } => { - match update { - &HTLCFailChannelUpdate::ChannelUpdateMessage { .. } => { - if let HTLCFailChannelUpdate::ChannelUpdateMessage { .. } = expected_channel_update.unwrap() {} else { - panic!("channel_update not found!"); - } - }, - &HTLCFailChannelUpdate::ChannelClosed { ref short_channel_id, ref is_permanent } => { - if let HTLCFailChannelUpdate::ChannelClosed { short_channel_id: ref expected_short_channel_id, is_permanent: ref expected_is_permanent } = expected_channel_update.unwrap() { - assert!(*short_channel_id == *expected_short_channel_id); - assert!(*is_permanent == *expected_is_permanent); - } else { - panic!("Unexpected message event"); - } - }, - &HTLCFailChannelUpdate::NodeFailure { ref node_id, ref is_permanent } => { - if let HTLCFailChannelUpdate::NodeFailure { node_id: ref expected_node_id, is_permanent: ref expected_is_permanent } = expected_channel_update.unwrap() { - assert!(*node_id == *expected_node_id); - assert!(*is_permanent == *expected_is_permanent); - } else { - panic!("Unexpected message event"); - } - }, - } - }, - _ => panic!("Unexpected message event"), - } - } else { - assert_eq!(events.len(), 0); - } - } - - impl msgs::ChannelUpdate { - fn dummy() -> msgs::ChannelUpdate { - use secp256k1::ffi::Signature as FFISignature; - use secp256k1::Signature; - msgs::ChannelUpdate { - signature: Signature::from(FFISignature::new()), - contents: msgs::UnsignedChannelUpdate { - chain_hash: Sha256dHash::from_data(&vec![0u8][..]), - short_channel_id: 0, - timestamp: 0, - flags: 0, - cltv_expiry_delta: 0, - htlc_minimum_msat: 0, - fee_base_msat: 0, - fee_proportional_millionths: 0, - excess_data: vec![], - } - } - } - } - - #[test] - fn test_onion_failure() { - use ln::msgs::ChannelUpdate; - use ln::channelmanager::CLTV_FAR_FAR_AWAY; - use secp256k1; - - const BADONION: u16 = 0x8000; - const PERM: u16 = 0x4000; - const NODE: u16 = 0x2000; - const UPDATE: u16 = 0x1000; - - let mut nodes = create_network(3); - for node in nodes.iter() { - *node.keys_manager.override_session_priv.lock().unwrap() = Some(SecretKey::from_slice(&Secp256k1::without_caps(), &[3; 32]).unwrap()); - } - let channels = [create_announced_chan_between_nodes(&nodes, 0, 1), create_announced_chan_between_nodes(&nodes, 1, 2)]; - let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]); - let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV).unwrap(); - // positve case - send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 40000); - - // intermediate node failure - run_onion_failure_test("invalid_realm", 0, &nodes, &route, &payment_hash, |msg| { - let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); - let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1; - let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); - let (mut onion_payloads, _htlc_msat, _htlc_cltv) = onion_utils::build_onion_payloads(&route, cur_height).unwrap(); - onion_payloads[0].realm = 3; - msg.onion_routing_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &payment_hash); - }, ||{}, true, Some(PERM|1), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true}));//XXX incremented channels idx here - - // final node failure - run_onion_failure_test("invalid_realm", 3, &nodes, &route, &payment_hash, |msg| { - let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); - let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1; - let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); - let (mut onion_payloads, _htlc_msat, _htlc_cltv) = onion_utils::build_onion_payloads(&route, cur_height).unwrap(); - onion_payloads[1].realm = 3; - msg.onion_routing_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &payment_hash); - }, ||{}, false, Some(PERM|1), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true})); - - // the following three with run_onion_failure_test_with_fail_intercept() test only the origin node - // receiving simulated fail messages - // intermediate node failure - run_onion_failure_test_with_fail_intercept("temporary_node_failure", 100, &nodes, &route, &payment_hash, |msg| { - // trigger error - msg.amount_msat -= 1; - }, |msg| { - // and tamper returing error message - let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); - let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); - msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], NODE|2, &[0;0]); - }, ||{}, true, Some(NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[0].pubkey, is_permanent: false})); - - // final node failure - run_onion_failure_test_with_fail_intercept("temporary_node_failure", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| { - // and tamper returing error message - let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); - let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); - msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], NODE|2, &[0;0]); - }, ||{ - nodes[2].node.fail_htlc_backwards(&payment_hash, 0); - }, true, Some(NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[1].pubkey, is_permanent: false})); - - // intermediate node failure - run_onion_failure_test_with_fail_intercept("permanent_node_failure", 100, &nodes, &route, &payment_hash, |msg| { - msg.amount_msat -= 1; - }, |msg| { - let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); - let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); - msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|NODE|2, &[0;0]); - }, ||{}, true, Some(PERM|NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[0].pubkey, is_permanent: true})); - - // final node failure - run_onion_failure_test_with_fail_intercept("permanent_node_failure", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| { - let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); - let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); - msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], PERM|NODE|2, &[0;0]); - }, ||{ - nodes[2].node.fail_htlc_backwards(&payment_hash, 0); - }, false, Some(PERM|NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[1].pubkey, is_permanent: true})); - - // intermediate node failure - run_onion_failure_test_with_fail_intercept("required_node_feature_missing", 100, &nodes, &route, &payment_hash, |msg| { - msg.amount_msat -= 1; - }, |msg| { - let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); - let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); - msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|NODE|3, &[0;0]); - }, ||{ - nodes[2].node.fail_htlc_backwards(&payment_hash, 0); - }, true, Some(PERM|NODE|3), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[0].pubkey, is_permanent: true})); - - // final node failure - run_onion_failure_test_with_fail_intercept("required_node_feature_missing", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| { - let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); - let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); - msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], PERM|NODE|3, &[0;0]); - }, ||{ - nodes[2].node.fail_htlc_backwards(&payment_hash, 0); - }, false, Some(PERM|NODE|3), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[1].pubkey, is_permanent: true})); - - run_onion_failure_test("invalid_onion_version", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.version = 1; }, ||{}, true, - Some(BADONION|PERM|4), None); - - run_onion_failure_test("invalid_onion_hmac", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.hmac = [3; 32]; }, ||{}, true, - Some(BADONION|PERM|5), None); - - run_onion_failure_test("invalid_onion_key", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.public_key = Err(secp256k1::Error::InvalidPublicKey);}, ||{}, true, - Some(BADONION|PERM|6), None); - - run_onion_failure_test_with_fail_intercept("temporary_channel_failure", 100, &nodes, &route, &payment_hash, |msg| { - msg.amount_msat -= 1; - }, |msg| { - let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); - let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); - msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], UPDATE|7, &ChannelUpdate::dummy().encode_with_len()[..]); - }, ||{}, true, Some(UPDATE|7), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()})); - - run_onion_failure_test_with_fail_intercept("permanent_channel_failure", 100, &nodes, &route, &payment_hash, |msg| { - msg.amount_msat -= 1; - }, |msg| { - let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); - let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); - msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|8, &[0;0]); - // short_channel_id from the processing node - }, ||{}, true, Some(PERM|8), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true})); - - run_onion_failure_test_with_fail_intercept("required_channel_feature_missing", 100, &nodes, &route, &payment_hash, |msg| { - msg.amount_msat -= 1; - }, |msg| { - let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); - let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); - msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|9, &[0;0]); - // short_channel_id from the processing node - }, ||{}, true, Some(PERM|9), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true})); - - let mut bogus_route = route.clone(); - bogus_route.hops[1].short_channel_id -= 1; - run_onion_failure_test("unknown_next_peer", 0, &nodes, &bogus_route, &payment_hash, |_| {}, ||{}, true, Some(PERM|10), - Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: bogus_route.hops[1].short_channel_id, is_permanent:true})); - - let amt_to_forward = nodes[1].node.channel_state.lock().unwrap().by_id.get(&channels[1].2).unwrap().get_their_htlc_minimum_msat() - 1; - let mut bogus_route = route.clone(); - let route_len = bogus_route.hops.len(); - bogus_route.hops[route_len-1].fee_msat = amt_to_forward; - run_onion_failure_test("amount_below_minimum", 0, &nodes, &bogus_route, &payment_hash, |_| {}, ||{}, true, Some(UPDATE|11), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()})); - - //TODO: with new config API, we will be able to generate both valid and - //invalid channel_update cases. - run_onion_failure_test("fee_insufficient", 0, &nodes, &route, &payment_hash, |msg| { - msg.amount_msat -= 1; - }, || {}, true, Some(UPDATE|12), Some(msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id: channels[0].0.contents.short_channel_id, is_permanent: true})); - - run_onion_failure_test("incorrect_cltv_expiry", 0, &nodes, &route, &payment_hash, |msg| { - // need to violate: cltv_expiry - cltv_expiry_delta >= outgoing_cltv_value - msg.cltv_expiry -= 1; - }, || {}, true, Some(UPDATE|13), Some(msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id: channels[0].0.contents.short_channel_id, is_permanent: true})); - - run_onion_failure_test("expiry_too_soon", 0, &nodes, &route, &payment_hash, |msg| { - let height = msg.cltv_expiry - CLTV_CLAIM_BUFFER - HTLC_FAIL_TIMEOUT_BLOCKS + 1; - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[1].chain_monitor.block_connected_checked(&header, height, &Vec::new()[..], &[0; 0]); - }, ||{}, true, Some(UPDATE|14), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()})); - - run_onion_failure_test("unknown_payment_hash", 2, &nodes, &route, &payment_hash, |_| {}, || { - nodes[2].node.fail_htlc_backwards(&payment_hash, 0); - }, false, Some(PERM|15), None); - - run_onion_failure_test("final_expiry_too_soon", 1, &nodes, &route, &payment_hash, |msg| { - let height = msg.cltv_expiry - CLTV_CLAIM_BUFFER - HTLC_FAIL_TIMEOUT_BLOCKS + 1; - let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; - nodes[2].chain_monitor.block_connected_checked(&header, height, &Vec::new()[..], &[0; 0]); - }, || {}, true, Some(17), None); - - run_onion_failure_test("final_incorrect_cltv_expiry", 1, &nodes, &route, &payment_hash, |_| {}, || { - for (_, mut pending_forwards) in nodes[1].node.channel_state.lock().unwrap().borrow_parts().forward_htlcs.iter_mut() { - for f in pending_forwards.iter_mut() { - f.forward_info.outgoing_cltv_value += 1; - } - } - }, true, Some(18), None); - - run_onion_failure_test("final_incorrect_htlc_amount", 1, &nodes, &route, &payment_hash, |_| {}, || { - // violate amt_to_forward > msg.amount_msat - for (_, mut pending_forwards) in nodes[1].node.channel_state.lock().unwrap().borrow_parts().forward_htlcs.iter_mut() { - for f in pending_forwards.iter_mut() { - f.forward_info.amt_to_forward -= 1; - } - } - }, true, Some(19), None); - - run_onion_failure_test("channel_disabled", 0, &nodes, &route, &payment_hash, |_| {}, || { - // disconnect event to the channel between nodes[1] ~ nodes[2] - nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), false); - nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - }, true, Some(UPDATE|20), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()})); - reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); - - run_onion_failure_test("expiry_too_far", 0, &nodes, &route, &payment_hash, |msg| { - let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); - let mut route = route.clone(); - let height = 1; - route.hops[1].cltv_expiry_delta += CLTV_FAR_FAR_AWAY + route.hops[0].cltv_expiry_delta + 1; - let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); - let (onion_payloads, _, htlc_cltv) = onion_utils::build_onion_payloads(&route, height).unwrap(); - let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &payment_hash); - msg.cltv_expiry = htlc_cltv; - msg.onion_routing_packet = onion_packet; - }, ||{}, true, Some(21), None); - } -} diff --git a/src/ln/functional_tests.rs b/src/ln/functional_tests.rs new file mode 100644 index 000000000..b62bd0b67 --- /dev/null +++ b/src/ln/functional_tests.rs @@ -0,0 +1,6364 @@ +//! Tests that test standing up a network of ChannelManagers, creating channels, sending +//! payments/messages between them, and often checking the resulting ChannelMonitors are able to +//! claim outputs on-chain. + +use chain::chaininterface; +use chain::transaction::OutPoint; +use chain::chaininterface::{ChainListener, ChainWatchInterface}; +use chain::keysinterface::{KeysInterface, SpendableOutputDescriptor}; +use chain::keysinterface; +use ln::channel::{COMMITMENT_TX_BASE_WEIGHT, COMMITMENT_TX_WEIGHT_PER_HTLC}; +use ln::channelmanager::{ChannelManager,ChannelManagerReadArgs,RAACommitmentOrder, PaymentPreimage, PaymentHash}; +use ln::channelmonitor::{ChannelMonitor, ChannelMonitorUpdateErr, CLTV_CLAIM_BUFFER, HTLC_FAIL_TIMEOUT_BLOCKS, ManyChannelMonitor}; +use ln::channel::{ACCEPTED_HTLC_SCRIPT_WEIGHT, OFFERED_HTLC_SCRIPT_WEIGHT}; +use ln::onion_utils; +use ln::router::{Route, RouteHop, Router}; +use ln::msgs; +use ln::msgs::{ChannelMessageHandler,RoutingMessageHandler,HTLCFailChannelUpdate}; +use util::test_utils; +use util::events::{Event, EventsProvider, MessageSendEvent, MessageSendEventsProvider}; +use util::errors::APIError; +use util::logger::Logger; +use util::ser::{Writeable, Writer, ReadableArgs}; +use util::config::UserConfig; + +use bitcoin::util::hash::{BitcoinHash, Sha256dHash}; +use bitcoin::util::bip143; +use bitcoin::util::address::Address; +use bitcoin::util::bip32::{ChildNumber, ExtendedPubKey, ExtendedPrivKey}; +use bitcoin::blockdata::block::{Block, BlockHeader}; +use bitcoin::blockdata::transaction::{Transaction, TxOut, TxIn, SigHashType}; +use bitcoin::blockdata::script::{Builder, Script}; +use bitcoin::blockdata::opcodes; +use bitcoin::blockdata::constants::genesis_block; +use bitcoin::network::constants::Network; + +use bitcoin_hashes::sha256::Hash as Sha256; +use bitcoin_hashes::Hash; + +use secp256k1::{Secp256k1, Message}; +use secp256k1::key::{PublicKey,SecretKey}; + +use rand::{thread_rng,Rng}; + +use std::cell::RefCell; +use std::collections::{BTreeSet, HashMap, HashSet}; +use std::default::Default; +use std::rc::Rc; +use std::sync::{Arc, Mutex}; +use std::sync::atomic::Ordering; +use std::time::Instant; +use std::mem; + +fn confirm_transaction(chain: &chaininterface::ChainWatchInterfaceUtil, tx: &Transaction, chan_id: u32) { + assert!(chain.does_match_tx(tx)); + let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + 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]); + } +} + +struct Node { + chain_monitor: Arc, + tx_broadcaster: Arc, + chan_monitor: Arc, + keys_manager: Arc, + node: Arc, + router: Router, + node_seed: [u8; 32], + network_payment_count: Rc>, + network_chan_count: Rc>, +} +impl Drop for Node { + fn drop(&mut self) { + if !::std::thread::panicking() { + // Check that we processed all pending events + assert_eq!(self.node.get_and_clear_pending_msg_events().len(), 0); + assert_eq!(self.node.get_and_clear_pending_events().len(), 0); + assert_eq!(self.chan_monitor.added_monitors.lock().unwrap().len(), 0); + } + } +} + +fn create_chan_between_nodes(node_a: &Node, node_b: &Node) -> (msgs::ChannelAnnouncement, msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction) { + create_chan_between_nodes_with_value(node_a, node_b, 100000, 10001) +} + +fn create_chan_between_nodes_with_value(node_a: &Node, node_b: &Node, channel_value: u64, push_msat: u64) -> (msgs::ChannelAnnouncement, msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction) { + let (funding_locked, channel_id, tx) = create_chan_between_nodes_with_value_a(node_a, node_b, channel_value, push_msat); + let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(node_a, node_b, &funding_locked); + (announcement, as_update, bs_update, channel_id, tx) +} + +macro_rules! get_revoke_commit_msgs { + ($node: expr, $node_id: expr) => { + { + let events = $node.node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 2); + (match events[0] { + MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => { + assert_eq!(*node_id, $node_id); + (*msg).clone() + }, + _ => panic!("Unexpected event"), + }, match events[1] { + MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => { + assert_eq!(*node_id, $node_id); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fulfill_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + updates.commitment_signed.clone() + }, + _ => panic!("Unexpected event"), + }) + } + } +} + +macro_rules! get_event_msg { + ($node: expr, $event_type: path, $node_id: expr) => { + { + let events = $node.node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + $event_type { ref node_id, ref msg } => { + assert_eq!(*node_id, $node_id); + (*msg).clone() + }, + _ => panic!("Unexpected event"), + } + } + } +} + +macro_rules! get_htlc_update_msgs { + ($node: expr, $node_id: expr) => { + { + let events = $node.node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => { + assert_eq!(*node_id, $node_id); + (*updates).clone() + }, + _ => panic!("Unexpected event"), + } + } + } +} + +macro_rules! get_feerate { + ($node: expr, $channel_id: expr) => { + { + let chan_lock = $node.node.channel_state.lock().unwrap(); + let chan = chan_lock.by_id.get(&$channel_id).unwrap(); + chan.get_feerate() + } + } +} + + +fn create_chan_between_nodes_with_value_init(node_a: &Node, node_b: &Node, channel_value: u64, push_msat: u64) -> Transaction { + node_a.node.create_channel(node_b.node.get_our_node_id(), channel_value, push_msat, 42).unwrap(); + node_b.node.handle_open_channel(&node_a.node.get_our_node_id(), &get_event_msg!(node_a, MessageSendEvent::SendOpenChannel, node_b.node.get_our_node_id())).unwrap(); + node_a.node.handle_accept_channel(&node_b.node.get_our_node_id(), &get_event_msg!(node_b, MessageSendEvent::SendAcceptChannel, node_a.node.get_our_node_id())).unwrap(); + + let chan_id = *node_a.network_chan_count.borrow(); + let tx; + let funding_output; + + let events_2 = node_a.node.get_and_clear_pending_events(); + assert_eq!(events_2.len(), 1); + match events_2[0] { + Event::FundingGenerationReady { ref temporary_channel_id, ref channel_value_satoshis, ref output_script, user_channel_id } => { + assert_eq!(*channel_value_satoshis, channel_value); + assert_eq!(user_channel_id, 42); + + tx = Transaction { version: chan_id as u32, lock_time: 0, input: Vec::new(), output: vec![TxOut { + value: *channel_value_satoshis, script_pubkey: output_script.clone(), + }]}; + funding_output = OutPoint::new(tx.txid(), 0); + + node_a.node.funding_transaction_generated(&temporary_channel_id, funding_output); + let mut added_monitors = node_a.chan_monitor.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), 1); + assert_eq!(added_monitors[0].0, funding_output); + added_monitors.clear(); + }, + _ => panic!("Unexpected event"), + } + + node_b.node.handle_funding_created(&node_a.node.get_our_node_id(), &get_event_msg!(node_a, MessageSendEvent::SendFundingCreated, node_b.node.get_our_node_id())).unwrap(); + { + let mut added_monitors = node_b.chan_monitor.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), 1); + assert_eq!(added_monitors[0].0, funding_output); + added_monitors.clear(); + } + + node_a.node.handle_funding_signed(&node_b.node.get_our_node_id(), &get_event_msg!(node_b, MessageSendEvent::SendFundingSigned, node_a.node.get_our_node_id())).unwrap(); + { + let mut added_monitors = node_a.chan_monitor.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), 1); + assert_eq!(added_monitors[0].0, funding_output); + added_monitors.clear(); + } + + let events_4 = node_a.node.get_and_clear_pending_events(); + assert_eq!(events_4.len(), 1); + match events_4[0] { + Event::FundingBroadcastSafe { ref funding_txo, user_channel_id } => { + assert_eq!(user_channel_id, 42); + assert_eq!(*funding_txo, funding_output); + }, + _ => panic!("Unexpected event"), + }; + + tx +} + +fn create_chan_between_nodes_with_value_confirm(node_a: &Node, node_b: &Node, tx: &Transaction) -> ((msgs::FundingLocked, msgs::AnnouncementSignatures), [u8; 32]) { + confirm_transaction(&node_b.chain_monitor, &tx, tx.version); + node_a.node.handle_funding_locked(&node_b.node.get_our_node_id(), &get_event_msg!(node_b, MessageSendEvent::SendFundingLocked, node_a.node.get_our_node_id())).unwrap(); + + let channel_id; + + confirm_transaction(&node_a.chain_monitor, &tx, tx.version); + let events_6 = node_a.node.get_and_clear_pending_msg_events(); + assert_eq!(events_6.len(), 2); + ((match events_6[0] { + MessageSendEvent::SendFundingLocked { ref node_id, ref msg } => { + channel_id = msg.channel_id.clone(); + assert_eq!(*node_id, node_b.node.get_our_node_id()); + msg.clone() + }, + _ => panic!("Unexpected event"), + }, match events_6[1] { + MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } => { + assert_eq!(*node_id, node_b.node.get_our_node_id()); + msg.clone() + }, + _ => panic!("Unexpected event"), + }), channel_id) +} + +fn create_chan_between_nodes_with_value_a(node_a: &Node, node_b: &Node, channel_value: u64, push_msat: u64) -> ((msgs::FundingLocked, msgs::AnnouncementSignatures), [u8; 32], Transaction) { + let tx = create_chan_between_nodes_with_value_init(node_a, node_b, channel_value, push_msat); + let (msgs, chan_id) = create_chan_between_nodes_with_value_confirm(node_a, node_b, &tx); + (msgs, chan_id, tx) +} + +fn create_chan_between_nodes_with_value_b(node_a: &Node, node_b: &Node, as_funding_msgs: &(msgs::FundingLocked, msgs::AnnouncementSignatures)) -> (msgs::ChannelAnnouncement, msgs::ChannelUpdate, msgs::ChannelUpdate) { + node_b.node.handle_funding_locked(&node_a.node.get_our_node_id(), &as_funding_msgs.0).unwrap(); + let bs_announcement_sigs = get_event_msg!(node_b, MessageSendEvent::SendAnnouncementSignatures, node_a.node.get_our_node_id()); + node_b.node.handle_announcement_signatures(&node_a.node.get_our_node_id(), &as_funding_msgs.1).unwrap(); + + let events_7 = node_b.node.get_and_clear_pending_msg_events(); + assert_eq!(events_7.len(), 1); + let (announcement, bs_update) = match events_7[0] { + MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => { + (msg, update_msg) + }, + _ => panic!("Unexpected event"), + }; + + node_a.node.handle_announcement_signatures(&node_b.node.get_our_node_id(), &bs_announcement_sigs).unwrap(); + let events_8 = node_a.node.get_and_clear_pending_msg_events(); + assert_eq!(events_8.len(), 1); + let as_update = match events_8[0] { + MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => { + assert!(*announcement == *msg); + assert_eq!(update_msg.contents.short_channel_id, announcement.contents.short_channel_id); + assert_eq!(update_msg.contents.short_channel_id, bs_update.contents.short_channel_id); + update_msg + }, + _ => panic!("Unexpected event"), + }; + + *node_a.network_chan_count.borrow_mut() += 1; + + ((*announcement).clone(), (*as_update).clone(), (*bs_update).clone()) +} + +fn create_announced_chan_between_nodes(nodes: &Vec, a: usize, b: usize) -> (msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction) { + create_announced_chan_between_nodes_with_value(nodes, a, b, 100000, 10001) +} + +fn create_announced_chan_between_nodes_with_value(nodes: &Vec, a: usize, b: usize, channel_value: u64, push_msat: u64) -> (msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction) { + let chan_announcement = create_chan_between_nodes_with_value(&nodes[a], &nodes[b], channel_value, push_msat); + for node in nodes { + assert!(node.router.handle_channel_announcement(&chan_announcement.0).unwrap()); + node.router.handle_channel_update(&chan_announcement.1).unwrap(); + node.router.handle_channel_update(&chan_announcement.2).unwrap(); + } + (chan_announcement.1, chan_announcement.2, chan_announcement.3, chan_announcement.4) +} + +macro_rules! check_spends { + ($tx: expr, $spends_tx: expr) => { + { + let mut funding_tx_map = HashMap::new(); + let spends_tx = $spends_tx; + funding_tx_map.insert(spends_tx.txid(), spends_tx); + $tx.verify(&funding_tx_map).unwrap(); + } + } +} + +macro_rules! get_closing_signed_broadcast { + ($node: expr, $dest_pubkey: expr) => { + { + let events = $node.get_and_clear_pending_msg_events(); + assert!(events.len() == 1 || events.len() == 2); + (match events[events.len() - 1] { + MessageSendEvent::BroadcastChannelUpdate { ref msg } => { + assert_eq!(msg.contents.flags & 2, 2); + msg.clone() + }, + _ => panic!("Unexpected event"), + }, if events.len() == 2 { + match events[0] { + MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => { + assert_eq!(*node_id, $dest_pubkey); + Some(msg.clone()) + }, + _ => panic!("Unexpected event"), + } + } else { None }) + } + } +} + +fn close_channel(outbound_node: &Node, inbound_node: &Node, channel_id: &[u8; 32], funding_tx: Transaction, close_inbound_first: bool) -> (msgs::ChannelUpdate, msgs::ChannelUpdate, Transaction) { + let (node_a, broadcaster_a, struct_a) = if close_inbound_first { (&inbound_node.node, &inbound_node.tx_broadcaster, inbound_node) } else { (&outbound_node.node, &outbound_node.tx_broadcaster, outbound_node) }; + let (node_b, broadcaster_b) = if close_inbound_first { (&outbound_node.node, &outbound_node.tx_broadcaster) } else { (&inbound_node.node, &inbound_node.tx_broadcaster) }; + let (tx_a, tx_b); + + node_a.close_channel(channel_id).unwrap(); + node_b.handle_shutdown(&node_a.get_our_node_id(), &get_event_msg!(struct_a, MessageSendEvent::SendShutdown, node_b.get_our_node_id())).unwrap(); + + let events_1 = node_b.get_and_clear_pending_msg_events(); + assert!(events_1.len() >= 1); + let shutdown_b = match events_1[0] { + MessageSendEvent::SendShutdown { ref node_id, ref msg } => { + assert_eq!(node_id, &node_a.get_our_node_id()); + msg.clone() + }, + _ => panic!("Unexpected event"), + }; + + let closing_signed_b = if !close_inbound_first { + assert_eq!(events_1.len(), 1); + None + } else { + Some(match events_1[1] { + MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => { + assert_eq!(node_id, &node_a.get_our_node_id()); + msg.clone() + }, + _ => panic!("Unexpected event"), + }) + }; + + node_a.handle_shutdown(&node_b.get_our_node_id(), &shutdown_b).unwrap(); + let (as_update, bs_update) = if close_inbound_first { + assert!(node_a.get_and_clear_pending_msg_events().is_empty()); + node_a.handle_closing_signed(&node_b.get_our_node_id(), &closing_signed_b.unwrap()).unwrap(); + assert_eq!(broadcaster_a.txn_broadcasted.lock().unwrap().len(), 1); + tx_a = broadcaster_a.txn_broadcasted.lock().unwrap().remove(0); + let (as_update, closing_signed_a) = get_closing_signed_broadcast!(node_a, node_b.get_our_node_id()); + + node_b.handle_closing_signed(&node_a.get_our_node_id(), &closing_signed_a.unwrap()).unwrap(); + let (bs_update, none_b) = get_closing_signed_broadcast!(node_b, node_a.get_our_node_id()); + assert!(none_b.is_none()); + assert_eq!(broadcaster_b.txn_broadcasted.lock().unwrap().len(), 1); + tx_b = broadcaster_b.txn_broadcasted.lock().unwrap().remove(0); + (as_update, bs_update) + } else { + let closing_signed_a = get_event_msg!(struct_a, MessageSendEvent::SendClosingSigned, node_b.get_our_node_id()); + + node_b.handle_closing_signed(&node_a.get_our_node_id(), &closing_signed_a).unwrap(); + assert_eq!(broadcaster_b.txn_broadcasted.lock().unwrap().len(), 1); + tx_b = broadcaster_b.txn_broadcasted.lock().unwrap().remove(0); + let (bs_update, closing_signed_b) = get_closing_signed_broadcast!(node_b, node_a.get_our_node_id()); + + node_a.handle_closing_signed(&node_b.get_our_node_id(), &closing_signed_b.unwrap()).unwrap(); + let (as_update, none_a) = get_closing_signed_broadcast!(node_a, node_b.get_our_node_id()); + assert!(none_a.is_none()); + assert_eq!(broadcaster_a.txn_broadcasted.lock().unwrap().len(), 1); + tx_a = broadcaster_a.txn_broadcasted.lock().unwrap().remove(0); + (as_update, bs_update) + }; + assert_eq!(tx_a, tx_b); + check_spends!(tx_a, funding_tx); + + (as_update, bs_update, tx_a) +} + +struct SendEvent { + node_id: PublicKey, + msgs: Vec, + commitment_msg: msgs::CommitmentSigned, +} +impl SendEvent { + fn from_commitment_update(node_id: PublicKey, updates: msgs::CommitmentUpdate) -> SendEvent { + assert!(updates.update_fulfill_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + SendEvent { node_id: node_id, msgs: updates.update_add_htlcs, commitment_msg: updates.commitment_signed } + } + + fn from_event(event: MessageSendEvent) -> SendEvent { + match event { + MessageSendEvent::UpdateHTLCs { node_id, updates } => SendEvent::from_commitment_update(node_id, updates), + _ => panic!("Unexpected event type!"), + } + } + + fn from_node(node: &Node) -> SendEvent { + let mut events = node.node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + SendEvent::from_event(events.pop().unwrap()) + } +} + +macro_rules! check_added_monitors { + ($node: expr, $count: expr) => { + { + let mut added_monitors = $node.chan_monitor.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), $count); + added_monitors.clear(); + } + } +} + +macro_rules! commitment_signed_dance { + ($node_a: expr, $node_b: expr, $commitment_signed: expr, $fail_backwards: expr, true /* skip last step */) => { + { + check_added_monitors!($node_a, 0); + assert!($node_a.node.get_and_clear_pending_msg_events().is_empty()); + $node_a.node.handle_commitment_signed(&$node_b.node.get_our_node_id(), &$commitment_signed).unwrap(); + check_added_monitors!($node_a, 1); + commitment_signed_dance!($node_a, $node_b, (), $fail_backwards, true, false); + } + }; + ($node_a: expr, $node_b: expr, (), $fail_backwards: expr, true /* skip last step */, true /* return extra message */, true /* return last RAA */) => { + { + let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!($node_a, $node_b.node.get_our_node_id()); + check_added_monitors!($node_b, 0); + assert!($node_b.node.get_and_clear_pending_msg_events().is_empty()); + $node_b.node.handle_revoke_and_ack(&$node_a.node.get_our_node_id(), &as_revoke_and_ack).unwrap(); + assert!($node_b.node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!($node_b, 1); + $node_b.node.handle_commitment_signed(&$node_a.node.get_our_node_id(), &as_commitment_signed).unwrap(); + let (bs_revoke_and_ack, extra_msg_option) = { + let events = $node_b.node.get_and_clear_pending_msg_events(); + assert!(events.len() <= 2); + (match events[0] { + MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => { + assert_eq!(*node_id, $node_a.node.get_our_node_id()); + (*msg).clone() + }, + _ => panic!("Unexpected event"), + }, events.get(1).map(|e| e.clone())) + }; + check_added_monitors!($node_b, 1); + if $fail_backwards { + assert!($node_a.node.get_and_clear_pending_events().is_empty()); + assert!($node_a.node.get_and_clear_pending_msg_events().is_empty()); + } + (extra_msg_option, bs_revoke_and_ack) + } + }; + ($node_a: expr, $node_b: expr, $commitment_signed: expr, $fail_backwards: expr, true /* skip last step */, false /* return extra message */, true /* return last RAA */) => { + { + check_added_monitors!($node_a, 0); + assert!($node_a.node.get_and_clear_pending_msg_events().is_empty()); + $node_a.node.handle_commitment_signed(&$node_b.node.get_our_node_id(), &$commitment_signed).unwrap(); + check_added_monitors!($node_a, 1); + let (extra_msg_option, bs_revoke_and_ack) = commitment_signed_dance!($node_a, $node_b, (), $fail_backwards, true, true, true); + assert!(extra_msg_option.is_none()); + bs_revoke_and_ack + } + }; + ($node_a: expr, $node_b: expr, (), $fail_backwards: expr, true /* skip last step */, true /* return extra message */) => { + { + let (extra_msg_option, bs_revoke_and_ack) = commitment_signed_dance!($node_a, $node_b, (), $fail_backwards, true, true, true); + $node_a.node.handle_revoke_and_ack(&$node_b.node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); + { + let mut added_monitors = $node_a.chan_monitor.added_monitors.lock().unwrap(); + if $fail_backwards { + assert_eq!(added_monitors.len(), 2); + assert!(added_monitors[0].0 != added_monitors[1].0); + } else { + assert_eq!(added_monitors.len(), 1); + } + added_monitors.clear(); + } + extra_msg_option + } + }; + ($node_a: expr, $node_b: expr, (), $fail_backwards: expr, true /* skip last step */, false /* no extra message */) => { + { + assert!(commitment_signed_dance!($node_a, $node_b, (), $fail_backwards, true, true).is_none()); + } + }; + ($node_a: expr, $node_b: expr, $commitment_signed: expr, $fail_backwards: expr) => { + { + commitment_signed_dance!($node_a, $node_b, $commitment_signed, $fail_backwards, true); + if $fail_backwards { + let channel_state = $node_a.node.channel_state.lock().unwrap(); + assert_eq!(channel_state.pending_msg_events.len(), 1); + if let MessageSendEvent::UpdateHTLCs { ref node_id, .. } = channel_state.pending_msg_events[0] { + assert_ne!(*node_id, $node_b.node.get_our_node_id()); + } else { panic!("Unexpected event"); } + } else { + assert!($node_a.node.get_and_clear_pending_msg_events().is_empty()); + } + } + } +} + +macro_rules! get_payment_preimage_hash { + ($node: expr) => { + { + let payment_preimage = PaymentPreimage([*$node.network_payment_count.borrow(); 32]); + *$node.network_payment_count.borrow_mut() += 1; + let payment_hash = PaymentHash(Sha256::hash(&payment_preimage.0[..]).into_inner()); + (payment_preimage, payment_hash) + } + } +} + +fn send_along_route(origin_node: &Node, route: Route, expected_route: &[&Node], recv_value: u64) -> (PaymentPreimage, PaymentHash) { + let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(origin_node); + + let mut payment_event = { + origin_node.node.send_payment(route, our_payment_hash).unwrap(); + check_added_monitors!(origin_node, 1); + + let mut events = origin_node.node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + SendEvent::from_event(events.remove(0)) + }; + let mut prev_node = origin_node; + + for (idx, &node) in expected_route.iter().enumerate() { + assert_eq!(node.node.get_our_node_id(), payment_event.node_id); + + node.node.handle_update_add_htlc(&prev_node.node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); + check_added_monitors!(node, 0); + commitment_signed_dance!(node, prev_node, payment_event.commitment_msg, false); + + let events_1 = node.node.get_and_clear_pending_events(); + assert_eq!(events_1.len(), 1); + match events_1[0] { + Event::PendingHTLCsForwardable { .. } => { }, + _ => panic!("Unexpected event"), + }; + + node.node.channel_state.lock().unwrap().next_forward = Instant::now(); + node.node.process_pending_htlc_forwards(); + + if idx == expected_route.len() - 1 { + let events_2 = node.node.get_and_clear_pending_events(); + assert_eq!(events_2.len(), 1); + match events_2[0] { + Event::PaymentReceived { ref payment_hash, amt } => { + assert_eq!(our_payment_hash, *payment_hash); + assert_eq!(amt, recv_value); + }, + _ => panic!("Unexpected event"), + } + } else { + let mut events_2 = node.node.get_and_clear_pending_msg_events(); + assert_eq!(events_2.len(), 1); + check_added_monitors!(node, 1); + payment_event = SendEvent::from_event(events_2.remove(0)); + assert_eq!(payment_event.msgs.len(), 1); + } + + prev_node = node; + } + + (our_payment_preimage, our_payment_hash) +} + +fn claim_payment_along_route(origin_node: &Node, expected_route: &[&Node], skip_last: bool, our_payment_preimage: PaymentPreimage) { + assert!(expected_route.last().unwrap().node.claim_funds(our_payment_preimage)); + check_added_monitors!(expected_route.last().unwrap(), 1); + + let mut next_msgs: Option<(msgs::UpdateFulfillHTLC, msgs::CommitmentSigned)> = None; + let mut expected_next_node = expected_route.last().unwrap().node.get_our_node_id(); + macro_rules! get_next_msgs { + ($node: expr) => { + { + let events = $node.node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => { + assert!(update_add_htlcs.is_empty()); + assert_eq!(update_fulfill_htlcs.len(), 1); + assert!(update_fail_htlcs.is_empty()); + assert!(update_fail_malformed_htlcs.is_empty()); + assert!(update_fee.is_none()); + expected_next_node = node_id.clone(); + Some((update_fulfill_htlcs[0].clone(), commitment_signed.clone())) + }, + _ => panic!("Unexpected event"), + } + } + } + } + + macro_rules! last_update_fulfill_dance { + ($node: expr, $prev_node: expr) => { + { + $node.node.handle_update_fulfill_htlc(&$prev_node.node.get_our_node_id(), &next_msgs.as_ref().unwrap().0).unwrap(); + check_added_monitors!($node, 0); + assert!($node.node.get_and_clear_pending_msg_events().is_empty()); + commitment_signed_dance!($node, $prev_node, next_msgs.as_ref().unwrap().1, false); + } + } + } + macro_rules! mid_update_fulfill_dance { + ($node: expr, $prev_node: expr, $new_msgs: expr) => { + { + $node.node.handle_update_fulfill_htlc(&$prev_node.node.get_our_node_id(), &next_msgs.as_ref().unwrap().0).unwrap(); + check_added_monitors!($node, 1); + let new_next_msgs = if $new_msgs { + get_next_msgs!($node) + } else { + assert!($node.node.get_and_clear_pending_msg_events().is_empty()); + None + }; + commitment_signed_dance!($node, $prev_node, next_msgs.as_ref().unwrap().1, false); + next_msgs = new_next_msgs; + } + } + } + + let mut prev_node = expected_route.last().unwrap(); + for (idx, node) in expected_route.iter().rev().enumerate() { + assert_eq!(expected_next_node, node.node.get_our_node_id()); + let update_next_msgs = !skip_last || idx != expected_route.len() - 1; + if next_msgs.is_some() { + mid_update_fulfill_dance!(node, prev_node, update_next_msgs); + } else if update_next_msgs { + next_msgs = get_next_msgs!(node); + } else { + assert!(node.node.get_and_clear_pending_msg_events().is_empty()); + } + if !skip_last && idx == expected_route.len() - 1 { + assert_eq!(expected_next_node, origin_node.node.get_our_node_id()); + } + + prev_node = node; + } + + if !skip_last { + last_update_fulfill_dance!(origin_node, expected_route.first().unwrap()); + let events = origin_node.node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentSent { payment_preimage } => { + assert_eq!(payment_preimage, our_payment_preimage); + }, + _ => panic!("Unexpected event"), + } + } +} + +fn claim_payment(origin_node: &Node, expected_route: &[&Node], our_payment_preimage: PaymentPreimage) { + claim_payment_along_route(origin_node, expected_route, false, our_payment_preimage); +} + +const TEST_FINAL_CLTV: u32 = 32; + +fn route_payment(origin_node: &Node, expected_route: &[&Node], recv_value: u64) -> (PaymentPreimage, PaymentHash) { + let route = origin_node.router.get_route(&expected_route.last().unwrap().node.get_our_node_id(), None, &Vec::new(), recv_value, TEST_FINAL_CLTV).unwrap(); + assert_eq!(route.hops.len(), expected_route.len()); + for (node, hop) in expected_route.iter().zip(route.hops.iter()) { + assert_eq!(hop.pubkey, node.node.get_our_node_id()); + } + + send_along_route(origin_node, route, expected_route, recv_value) +} + +fn route_over_limit(origin_node: &Node, expected_route: &[&Node], recv_value: u64) { + let route = origin_node.router.get_route(&expected_route.last().unwrap().node.get_our_node_id(), None, &Vec::new(), recv_value, TEST_FINAL_CLTV).unwrap(); + assert_eq!(route.hops.len(), expected_route.len()); + for (node, hop) in expected_route.iter().zip(route.hops.iter()) { + assert_eq!(hop.pubkey, node.node.get_our_node_id()); + } + + let (_, our_payment_hash) = get_payment_preimage_hash!(origin_node); + + let err = origin_node.node.send_payment(route, our_payment_hash).err().unwrap(); + match err { + APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our max HTLC value in flight"), + _ => panic!("Unknown error variants"), + }; +} + +fn send_payment(origin: &Node, expected_route: &[&Node], recv_value: u64) { + let our_payment_preimage = route_payment(&origin, expected_route, recv_value).0; + claim_payment(&origin, expected_route, our_payment_preimage); +} + +fn fail_payment_along_route(origin_node: &Node, expected_route: &[&Node], skip_last: bool, our_payment_hash: PaymentHash) { + assert!(expected_route.last().unwrap().node.fail_htlc_backwards(&our_payment_hash, 0)); + check_added_monitors!(expected_route.last().unwrap(), 1); + + let mut next_msgs: Option<(msgs::UpdateFailHTLC, msgs::CommitmentSigned)> = None; + macro_rules! update_fail_dance { + ($node: expr, $prev_node: expr, $last_node: expr) => { + { + $node.node.handle_update_fail_htlc(&$prev_node.node.get_our_node_id(), &next_msgs.as_ref().unwrap().0).unwrap(); + commitment_signed_dance!($node, $prev_node, next_msgs.as_ref().unwrap().1, !$last_node); + } + } + } + + let mut expected_next_node = expected_route.last().unwrap().node.get_our_node_id(); + let mut prev_node = expected_route.last().unwrap(); + for (idx, node) in expected_route.iter().rev().enumerate() { + assert_eq!(expected_next_node, node.node.get_our_node_id()); + if next_msgs.is_some() { + // We may be the "last node" for the purpose of the commitment dance if we're + // skipping the last node (implying it is disconnected) and we're the + // second-to-last node! + update_fail_dance!(node, prev_node, skip_last && idx == expected_route.len() - 1); + } + + let events = node.node.get_and_clear_pending_msg_events(); + if !skip_last || idx != expected_route.len() - 1 { + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => { + assert!(update_add_htlcs.is_empty()); + assert!(update_fulfill_htlcs.is_empty()); + assert_eq!(update_fail_htlcs.len(), 1); + assert!(update_fail_malformed_htlcs.is_empty()); + assert!(update_fee.is_none()); + expected_next_node = node_id.clone(); + next_msgs = Some((update_fail_htlcs[0].clone(), commitment_signed.clone())); + }, + _ => panic!("Unexpected event"), + } + } else { + assert!(events.is_empty()); + } + if !skip_last && idx == expected_route.len() - 1 { + assert_eq!(expected_next_node, origin_node.node.get_our_node_id()); + } + + prev_node = node; + } + + if !skip_last { + update_fail_dance!(origin_node, expected_route.first().unwrap(), true); + + let events = origin_node.node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentFailed { payment_hash, rejected_by_dest, .. } => { + assert_eq!(payment_hash, our_payment_hash); + assert!(rejected_by_dest); + }, + _ => panic!("Unexpected event"), + } + } +} + +fn fail_payment(origin_node: &Node, expected_route: &[&Node], our_payment_hash: PaymentHash) { + fail_payment_along_route(origin_node, expected_route, false, our_payment_hash); +} + +fn create_network(node_count: usize) -> Vec { + let mut nodes = Vec::new(); + let mut rng = thread_rng(); + let secp_ctx = Secp256k1::new(); + + let chan_count = Rc::new(RefCell::new(0)); + let payment_count = Rc::new(RefCell::new(0)); + + for i in 0..node_count { + let logger: Arc = Arc::new(test_utils::TestLogger::with_id(format!("node {}", i))); + let feeest = Arc::new(test_utils::TestFeeEstimator { sat_per_kw: 253 }); + let chain_monitor = Arc::new(chaininterface::ChainWatchInterfaceUtil::new(Network::Testnet, Arc::clone(&logger))); + let tx_broadcaster = Arc::new(test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new())}); + let mut seed = [0; 32]; + rng.fill_bytes(&mut seed); + let keys_manager = Arc::new(test_utils::TestKeysInterface::new(&seed, Network::Testnet, Arc::clone(&logger))); + let chan_monitor = Arc::new(test_utils::TestChannelMonitor::new(chain_monitor.clone(), tx_broadcaster.clone(), logger.clone())); + let mut config = UserConfig::new(); + config.channel_options.announced_channel = true; + config.channel_limits.force_announced_channel_preference = false; + let node = ChannelManager::new(Network::Testnet, feeest.clone(), chan_monitor.clone(), chain_monitor.clone(), tx_broadcaster.clone(), Arc::clone(&logger), keys_manager.clone(), config).unwrap(); + let router = Router::new(PublicKey::from_secret_key(&secp_ctx, &keys_manager.get_node_secret()), chain_monitor.clone(), Arc::clone(&logger)); + nodes.push(Node { chain_monitor, tx_broadcaster, chan_monitor, node, router, keys_manager, node_seed: seed, + network_payment_count: payment_count.clone(), + network_chan_count: chan_count.clone(), + }); + } + + nodes +} + +#[test] +fn test_async_inbound_update_fee() { + let mut nodes = create_network(2); + let chan = create_announced_chan_between_nodes(&nodes, 0, 1); + let channel_id = chan.2; + + // balancing + send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000); + + // A B + // update_fee -> + // send (1) commitment_signed -. + // <- update_add_htlc/commitment_signed + // send (2) RAA (awaiting remote revoke) -. + // (1) commitment_signed is delivered -> + // .- send (3) RAA (awaiting remote revoke) + // (2) RAA is delivered -> + // .- send (4) commitment_signed + // <- (3) RAA is delivered + // send (5) commitment_signed -. + // <- (4) commitment_signed is delivered + // send (6) RAA -. + // (5) commitment_signed is delivered -> + // <- RAA + // (6) RAA is delivered -> + + // First nodes[0] generates an update_fee + nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap(); + check_added_monitors!(nodes[0], 1); + + let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_0.len(), 1); + let (update_msg, commitment_signed) = match events_0[0] { // (1) + MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => { + (update_fee.as_ref(), commitment_signed) + }, + _ => panic!("Unexpected event"), + }; + + nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap(); + + // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]... + let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]); + nodes[1].node.send_payment(nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV).unwrap(), our_payment_hash).unwrap(); + check_added_monitors!(nodes[1], 1); + + let payment_event = { + let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events_1.len(), 1); + SendEvent::from_event(events_1.remove(0)) + }; + assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id()); + assert_eq!(payment_event.msgs.len(), 1); + + // ...now when the messages get delivered everyone should be happy + nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); // (2) + let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[0], 1); + + // deliver(1), generate (3): + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap(); + let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); + // nodes[1] is awaiting nodes[0] revoke_and_ack so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[1], 1); + + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); // deliver (2) + let bs_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + assert!(bs_update.update_add_htlcs.is_empty()); // (4) + assert!(bs_update.update_fulfill_htlcs.is_empty()); // (4) + assert!(bs_update.update_fail_htlcs.is_empty()); // (4) + assert!(bs_update.update_fail_malformed_htlcs.is_empty()); // (4) + assert!(bs_update.update_fee.is_none()); // (4) + check_added_monitors!(nodes[1], 1); + + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); // deliver (3) + let as_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + assert!(as_update.update_add_htlcs.is_empty()); // (5) + assert!(as_update.update_fulfill_htlcs.is_empty()); // (5) + assert!(as_update.update_fail_htlcs.is_empty()); // (5) + assert!(as_update.update_fail_malformed_htlcs.is_empty()); // (5) + assert!(as_update.update_fee.is_none()); // (5) + check_added_monitors!(nodes[0], 1); + + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_update.commitment_signed).unwrap(); // deliver (4) + let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // only (6) so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[0], 1); + + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_update.commitment_signed).unwrap(); // deliver (5) + let bs_second_revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); + check_added_monitors!(nodes[1], 1); + + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke).unwrap(); + check_added_monitors!(nodes[0], 1); + + let events_2 = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events_2.len(), 1); + match events_2[0] { + Event::PendingHTLCsForwardable {..} => {}, // If we actually processed we'd receive the payment + _ => panic!("Unexpected event"), + } + + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke).unwrap(); // deliver (6) + check_added_monitors!(nodes[1], 1); +} + +#[test] +fn test_update_fee_unordered_raa() { + // Just the intro to the previous test followed by an out-of-order RAA (which caused a + // crash in an earlier version of the update_fee patch) + let mut nodes = create_network(2); + let chan = create_announced_chan_between_nodes(&nodes, 0, 1); + let channel_id = chan.2; + + // balancing + send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000); + + // First nodes[0] generates an update_fee + nodes[0].node.update_fee(channel_id, get_feerate!(nodes[0], channel_id) + 20).unwrap(); + check_added_monitors!(nodes[0], 1); + + let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_0.len(), 1); + let update_msg = match events_0[0] { // (1) + MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, .. }, .. } => { + update_fee.as_ref() + }, + _ => panic!("Unexpected event"), + }; + + nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap(); + + // ...but before it's delivered, nodes[1] starts to send a payment back to nodes[0]... + let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]); + nodes[1].node.send_payment(nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV).unwrap(), our_payment_hash).unwrap(); + check_added_monitors!(nodes[1], 1); + + let payment_event = { + let mut events_1 = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events_1.len(), 1); + SendEvent::from_event(events_1.remove(0)) + }; + assert_eq!(payment_event.node_id, nodes[0].node.get_our_node_id()); + assert_eq!(payment_event.msgs.len(), 1); + + // ...now when the messages get delivered everyone should be happy + nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); // (2) + let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // nodes[0] is awaiting nodes[1] revoke_and_ack so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[0], 1); + + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg).unwrap(); // deliver (2) + check_added_monitors!(nodes[1], 1); + + // We can't continue, sadly, because our (1) now has a bogus signature +} + +#[test] +fn test_multi_flight_update_fee() { + let nodes = create_network(2); + let chan = create_announced_chan_between_nodes(&nodes, 0, 1); + let channel_id = chan.2; + + // A B + // update_fee/commitment_signed -> + // .- send (1) RAA and (2) commitment_signed + // update_fee (never committed) -> + // (3) update_fee -> + // We have to manually generate the above update_fee, it is allowed by the protocol but we + // don't track which updates correspond to which revoke_and_ack responses so we're in + // AwaitingRAA mode and will not generate the update_fee yet. + // <- (1) RAA delivered + // (3) is generated and send (4) CS -. + // Note that A cannot generate (4) prior to (1) being delivered as it otherwise doesn't + // know the per_commitment_point to use for it. + // <- (2) commitment_signed delivered + // revoke_and_ack -> + // B should send no response here + // (4) commitment_signed delivered -> + // <- RAA/commitment_signed delivered + // revoke_and_ack -> + + // First nodes[0] generates an update_fee + let initial_feerate = get_feerate!(nodes[0], channel_id); + nodes[0].node.update_fee(channel_id, initial_feerate + 20).unwrap(); + check_added_monitors!(nodes[0], 1); + + let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_0.len(), 1); + let (update_msg_1, commitment_signed_1) = match events_0[0] { // (1) + MessageSendEvent::UpdateHTLCs { updates: msgs::CommitmentUpdate { ref update_fee, ref commitment_signed, .. }, .. } => { + (update_fee.as_ref().unwrap(), commitment_signed) + }, + _ => panic!("Unexpected event"), + }; + + // Deliver first update_fee/commitment_signed pair, generating (1) and (2): + nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg_1).unwrap(); + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed_1).unwrap(); + let (bs_revoke_msg, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + check_added_monitors!(nodes[1], 1); + + // nodes[0] is awaiting a revoke from nodes[1] before it will create a new commitment + // transaction: + nodes[0].node.update_fee(channel_id, initial_feerate + 40).unwrap(); + assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + + // Create the (3) update_fee message that nodes[0] will generate before it does... + let mut update_msg_2 = msgs::UpdateFee { + channel_id: update_msg_1.channel_id.clone(), + feerate_per_kw: (initial_feerate + 30) as u32, + }; + + nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2).unwrap(); + + update_msg_2.feerate_per_kw = (initial_feerate + 40) as u32; + // Deliver (3) + nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg_2).unwrap(); + + // Deliver (1), generating (3) and (4) + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_msg).unwrap(); + let as_second_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + check_added_monitors!(nodes[0], 1); + assert!(as_second_update.update_add_htlcs.is_empty()); + assert!(as_second_update.update_fulfill_htlcs.is_empty()); + assert!(as_second_update.update_fail_htlcs.is_empty()); + assert!(as_second_update.update_fail_malformed_htlcs.is_empty()); + // Check that the update_fee newly generated matches what we delivered: + assert_eq!(as_second_update.update_fee.as_ref().unwrap().channel_id, update_msg_2.channel_id); + assert_eq!(as_second_update.update_fee.as_ref().unwrap().feerate_per_kw, update_msg_2.feerate_per_kw); + + // Deliver (2) commitment_signed + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed).unwrap(); + let as_revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + check_added_monitors!(nodes[0], 1); + // No commitment_signed so get_event_msg's assert(len == 1) passes + + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_msg).unwrap(); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[1], 1); + + // Delever (4) + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_second_update.commitment_signed).unwrap(); + let (bs_second_revoke, bs_second_commitment) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + check_added_monitors!(nodes[1], 1); + + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke).unwrap(); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[0], 1); + + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment).unwrap(); + let as_second_revoke = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[0], 1); + + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_second_revoke).unwrap(); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[1], 1); +} + +#[test] +fn test_update_fee_vanilla() { + let nodes = create_network(2); + let chan = create_announced_chan_between_nodes(&nodes, 0, 1); + let channel_id = chan.2; + + let feerate = get_feerate!(nodes[0], channel_id); + nodes[0].node.update_fee(channel_id, feerate+25).unwrap(); + check_added_monitors!(nodes[0], 1); + + let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_0.len(), 1); + let (update_msg, commitment_signed) = match events_0[0] { + MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => { + (update_fee.as_ref(), commitment_signed) + }, + _ => panic!("Unexpected event"), + }; + nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap(); + + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap(); + let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + check_added_monitors!(nodes[1], 1); + + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap(); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[0], 1); + + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed).unwrap(); + let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[0], 1); + + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg).unwrap(); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[1], 1); +} + +#[test] +fn test_update_fee_that_funder_cannot_afford() { + let nodes = create_network(2); + let channel_value = 1888; + let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, channel_value, 700000); + let channel_id = chan.2; + + let feerate = 260; + nodes[0].node.update_fee(channel_id, feerate).unwrap(); + check_added_monitors!(nodes[0], 1); + let update_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + + nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update_msg.update_fee.unwrap()).unwrap(); + + commitment_signed_dance!(nodes[1], nodes[0], update_msg.commitment_signed, false); + + //Confirm that the new fee based on the last local commitment txn is what we expected based on the feerate of 260 set above. + //This value results in a fee that is exactly what the funder can afford (277 sat + 1000 sat channel reserve) + { + let chan_lock = nodes[1].node.channel_state.lock().unwrap(); + let chan = chan_lock.by_id.get(&channel_id).unwrap(); + + //We made sure neither party's funds are below the dust limit so -2 non-HTLC txns from number of outputs + let num_htlcs = chan.last_local_commitment_txn[0].output.len() - 2; + let total_fee: u64 = feerate * (COMMITMENT_TX_BASE_WEIGHT + (num_htlcs as u64) * COMMITMENT_TX_WEIGHT_PER_HTLC) / 1000; + let mut actual_fee = chan.last_local_commitment_txn[0].output.iter().fold(0, |acc, output| acc + output.value); + actual_fee = channel_value - actual_fee; + assert_eq!(total_fee, actual_fee); + } //drop the mutex + + //Add 2 to the previous fee rate to the final fee increases by 1 (with no HTLCs the fee is essentially + //fee_rate*(724/1000) so the increment of 1*0.724 is rounded back down) + nodes[0].node.update_fee(channel_id, feerate+2).unwrap(); + check_added_monitors!(nodes[0], 1); + + let update2_msg = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + + nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), &update2_msg.update_fee.unwrap()).unwrap(); + + //While producing the commitment_signed response after handling a received update_fee request the + //check to see if the funder, who sent the update_fee request, can afford the new fee (funder_balance >= fee+channel_reserve) + //Should produce and error. + let err = nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &update2_msg.commitment_signed).unwrap_err(); + + assert!(match err.err { + "Funding remote cannot afford proposed new fee" => true, + _ => false, + }); + + //clear the message we could not handle + nodes[1].node.get_and_clear_pending_msg_events(); +} + +#[test] +fn test_update_fee_with_fundee_update_add_htlc() { + let mut nodes = create_network(2); + let chan = create_announced_chan_between_nodes(&nodes, 0, 1); + let channel_id = chan.2; + + // balancing + send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000); + + let feerate = get_feerate!(nodes[0], channel_id); + nodes[0].node.update_fee(channel_id, feerate+20).unwrap(); + check_added_monitors!(nodes[0], 1); + + let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_0.len(), 1); + let (update_msg, commitment_signed) = match events_0[0] { + MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => { + (update_fee.as_ref(), commitment_signed) + }, + _ => panic!("Unexpected event"), + }; + nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap(); + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap(); + let (revoke_msg, commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + check_added_monitors!(nodes[1], 1); + + let route = nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 800000, TEST_FINAL_CLTV).unwrap(); + + let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[1]); + + // nothing happens since node[1] is in AwaitingRemoteRevoke + nodes[1].node.send_payment(route, our_payment_hash).unwrap(); + { + let mut added_monitors = nodes[0].chan_monitor.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), 0); + added_monitors.clear(); + } + assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + // node[1] has nothing to do + + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap(); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[0], 1); + + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed).unwrap(); + let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[0], 1); + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg).unwrap(); + check_added_monitors!(nodes[1], 1); + // AwaitingRemoteRevoke ends here + + let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + assert_eq!(commitment_update.update_add_htlcs.len(), 1); + assert_eq!(commitment_update.update_fulfill_htlcs.len(), 0); + assert_eq!(commitment_update.update_fail_htlcs.len(), 0); + assert_eq!(commitment_update.update_fail_malformed_htlcs.len(), 0); + assert_eq!(commitment_update.update_fee.is_none(), true); + + nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &commitment_update.update_add_htlcs[0]).unwrap(); + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed).unwrap(); + check_added_monitors!(nodes[0], 1); + let (revoke, commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke).unwrap(); + check_added_monitors!(nodes[1], 1); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &commitment_signed).unwrap(); + check_added_monitors!(nodes[1], 1); + let revoke = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke).unwrap(); + check_added_monitors!(nodes[0], 1); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PendingHTLCsForwardable { .. } => { }, + _ => panic!("Unexpected event"), + }; + nodes[0].node.channel_state.lock().unwrap().next_forward = Instant::now(); + nodes[0].node.process_pending_htlc_forwards(); + + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentReceived { .. } => { }, + _ => panic!("Unexpected event"), + }; + + claim_payment(&nodes[1], &vec!(&nodes[0])[..], our_payment_preimage); + + send_payment(&nodes[1], &vec!(&nodes[0])[..], 800000); + send_payment(&nodes[0], &vec!(&nodes[1])[..], 800000); + close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true); +} + +#[test] +fn test_update_fee() { + let nodes = create_network(2); + let chan = create_announced_chan_between_nodes(&nodes, 0, 1); + let channel_id = chan.2; + + // A B + // (1) update_fee/commitment_signed -> + // <- (2) revoke_and_ack + // .- send (3) commitment_signed + // (4) update_fee/commitment_signed -> + // .- send (5) revoke_and_ack (no CS as we're awaiting a revoke) + // <- (3) commitment_signed delivered + // send (6) revoke_and_ack -. + // <- (5) deliver revoke_and_ack + // (6) deliver revoke_and_ack -> + // .- send (7) commitment_signed in response to (4) + // <- (7) deliver commitment_signed + // revoke_and_ack -> + + // Create and deliver (1)... + let feerate = get_feerate!(nodes[0], channel_id); + nodes[0].node.update_fee(channel_id, feerate+20).unwrap(); + check_added_monitors!(nodes[0], 1); + + let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_0.len(), 1); + let (update_msg, commitment_signed) = match events_0[0] { + MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => { + (update_fee.as_ref(), commitment_signed) + }, + _ => panic!("Unexpected event"), + }; + nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap(); + + // Generate (2) and (3): + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap(); + let (revoke_msg, commitment_signed_0) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + check_added_monitors!(nodes[1], 1); + + // Deliver (2): + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap(); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[0], 1); + + // Create and deliver (4)... + nodes[0].node.update_fee(channel_id, feerate+30).unwrap(); + check_added_monitors!(nodes[0], 1); + let events_0 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_0.len(), 1); + let (update_msg, commitment_signed) = match events_0[0] { + MessageSendEvent::UpdateHTLCs { node_id:_, updates: msgs::CommitmentUpdate { update_add_htlcs:_, update_fulfill_htlcs:_, update_fail_htlcs:_, update_fail_malformed_htlcs:_, ref update_fee, ref commitment_signed } } => { + (update_fee.as_ref(), commitment_signed) + }, + _ => panic!("Unexpected event"), + }; + + nodes[1].node.handle_update_fee(&nodes[0].node.get_our_node_id(), update_msg.unwrap()).unwrap(); + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), commitment_signed).unwrap(); + check_added_monitors!(nodes[1], 1); + // ... creating (5) + let revoke_msg = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + + // Handle (3), creating (6): + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed_0).unwrap(); + check_added_monitors!(nodes[0], 1); + let revoke_msg_0 = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + + // Deliver (5): + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &revoke_msg).unwrap(); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[0], 1); + + // Deliver (6), creating (7): + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg_0).unwrap(); + let commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + assert!(commitment_update.update_add_htlcs.is_empty()); + assert!(commitment_update.update_fulfill_htlcs.is_empty()); + assert!(commitment_update.update_fail_htlcs.is_empty()); + assert!(commitment_update.update_fail_malformed_htlcs.is_empty()); + assert!(commitment_update.update_fee.is_none()); + check_added_monitors!(nodes[1], 1); + + // Deliver (7) + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_update.commitment_signed).unwrap(); + check_added_monitors!(nodes[0], 1); + let revoke_msg = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &revoke_msg).unwrap(); + check_added_monitors!(nodes[1], 1); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + + assert_eq!(get_feerate!(nodes[0], channel_id), feerate + 30); + assert_eq!(get_feerate!(nodes[1], channel_id), feerate + 30); + close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true); +} + +#[test] +fn pre_funding_lock_shutdown_test() { + // Test sending a shutdown prior to funding_locked after funding generation + let nodes = create_network(2); + let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 8000000, 0); + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[0].chain_monitor.block_connected_checked(&header, 1, &[&tx; 1], &[1; 1]); + nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&tx; 1], &[1; 1]); + + nodes[0].node.close_channel(&OutPoint::new(tx.txid(), 0).to_channel_id()).unwrap(); + let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap(); + let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap(); + + let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap(); + let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap(); + let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); + assert!(node_0_none.is_none()); + + assert!(nodes[0].node.list_channels().is_empty()); + assert!(nodes[1].node.list_channels().is_empty()); +} + +#[test] +fn updates_shutdown_wait() { + // Test sending a shutdown with outstanding updates pending + let mut nodes = create_network(3); + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); + let route_1 = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap(); + let route_2 = nodes[1].router.get_route(&nodes[0].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap(); + + let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000); + + nodes[0].node.close_channel(&chan_1.2).unwrap(); + let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap(); + let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap(); + + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + + let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]); + if let Err(APIError::ChannelUnavailable {..}) = nodes[0].node.send_payment(route_1, payment_hash) {} + else { panic!("New sends should fail!") }; + if let Err(APIError::ChannelUnavailable {..}) = nodes[1].node.send_payment(route_2, payment_hash) {} + else { panic!("New sends should fail!") }; + + assert!(nodes[2].node.claim_funds(our_payment_preimage)); + check_added_monitors!(nodes[2], 1); + let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + assert_eq!(updates.update_fulfill_htlcs.len(), 1); + nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap(); + check_added_monitors!(nodes[1], 1); + let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false); + + assert!(updates_2.update_add_htlcs.is_empty()); + assert!(updates_2.update_fail_htlcs.is_empty()); + assert!(updates_2.update_fail_malformed_htlcs.is_empty()); + assert!(updates_2.update_fee.is_none()); + assert_eq!(updates_2.update_fulfill_htlcs.len(), 1); + nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]).unwrap(); + commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true); + + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentSent { ref payment_preimage } => { + assert_eq!(our_payment_preimage, *payment_preimage); + }, + _ => panic!("Unexpected event"), + } + + let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap(); + let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap(); + let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); + assert!(node_0_none.is_none()); + + assert!(nodes[0].node.list_channels().is_empty()); + + assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1); + nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear(); + close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true); + assert!(nodes[1].node.list_channels().is_empty()); + assert!(nodes[2].node.list_channels().is_empty()); +} + +#[test] +fn htlc_fail_async_shutdown() { + // Test HTLCs fail if shutdown starts even if messages are delivered out-of-order + let mut nodes = create_network(3); + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); + + let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &[], 100000, TEST_FINAL_CLTV).unwrap(); + let (_, our_payment_hash) = get_payment_preimage_hash!(nodes[0]); + nodes[0].node.send_payment(route, our_payment_hash).unwrap(); + check_added_monitors!(nodes[0], 1); + let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + assert_eq!(updates.update_add_htlcs.len(), 1); + assert!(updates.update_fulfill_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + + nodes[1].node.close_channel(&chan_1.2).unwrap(); + let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap(); + let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); + + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]).unwrap(); + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed).unwrap(); + check_added_monitors!(nodes[1], 1); + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap(); + commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false); + + let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + assert!(updates_2.update_add_htlcs.is_empty()); + assert!(updates_2.update_fulfill_htlcs.is_empty()); + assert_eq!(updates_2.update_fail_htlcs.len(), 1); + assert!(updates_2.update_fail_malformed_htlcs.is_empty()); + assert!(updates_2.update_fee.is_none()); + + nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fail_htlcs[0]).unwrap(); + commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true); + + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentFailed { ref payment_hash, ref rejected_by_dest, .. } => { + assert_eq!(our_payment_hash, *payment_hash); + assert!(!rejected_by_dest); + }, + _ => panic!("Unexpected event"), + } + + let msg_events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(msg_events.len(), 2); + let node_0_closing_signed = match msg_events[0] { + MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => { + assert_eq!(*node_id, nodes[1].node.get_our_node_id()); + (*msg).clone() + }, + _ => panic!("Unexpected event"), + }; + match msg_events[1] { + MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => { + assert_eq!(msg.contents.short_channel_id, chan_1.0.contents.short_channel_id); + }, + _ => panic!("Unexpected event"), + } + + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap(); + let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap(); + let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); + assert!(node_0_none.is_none()); + + assert!(nodes[0].node.list_channels().is_empty()); + + assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1); + nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear(); + close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true); + assert!(nodes[1].node.list_channels().is_empty()); + assert!(nodes[2].node.list_channels().is_empty()); +} + +fn do_test_shutdown_rebroadcast(recv_count: u8) { + // Test that shutdown/closing_signed is re-sent on reconnect with a variable number of + // messages delivered prior to disconnect + let nodes = create_network(3); + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); + + let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000); + + nodes[1].node.close_channel(&chan_1.2).unwrap(); + let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + if recv_count > 0 { + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_shutdown).unwrap(); + let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); + if recv_count > 1 { + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_shutdown).unwrap(); + } + } + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + + nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); + let node_0_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id()); + nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); + let node_1_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()); + + nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_reestablish).unwrap(); + let node_1_2nd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + assert!(node_1_shutdown == node_1_2nd_shutdown); + + nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_reestablish).unwrap(); + let node_0_2nd_shutdown = if recv_count > 0 { + let node_0_2nd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown).unwrap(); + node_0_2nd_shutdown + } else { + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_2nd_shutdown).unwrap(); + get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()) + }; + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_2nd_shutdown).unwrap(); + + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + + assert!(nodes[2].node.claim_funds(our_payment_preimage)); + check_added_monitors!(nodes[2], 1); + let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + assert_eq!(updates.update_fulfill_htlcs.len(), 1); + nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap(); + check_added_monitors!(nodes[1], 1); + let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false); + + assert!(updates_2.update_add_htlcs.is_empty()); + assert!(updates_2.update_fail_htlcs.is_empty()); + assert!(updates_2.update_fail_malformed_htlcs.is_empty()); + assert!(updates_2.update_fee.is_none()); + assert_eq!(updates_2.update_fulfill_htlcs.len(), 1); + nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]).unwrap(); + commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true); + + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentSent { ref payment_preimage } => { + assert_eq!(our_payment_preimage, *payment_preimage); + }, + _ => panic!("Unexpected event"), + } + + let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); + if recv_count > 0 { + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed).unwrap(); + let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); + assert!(node_1_closing_signed.is_some()); + } + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + + nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); + let node_0_2nd_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id()); + nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); + if recv_count == 0 { + // If all closing_signeds weren't delivered we can just resume where we left off... + let node_1_2nd_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()); + + nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish).unwrap(); + let node_0_3rd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); + assert!(node_0_2nd_shutdown == node_0_3rd_shutdown); + + nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish).unwrap(); + let node_1_3rd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + assert!(node_1_3rd_shutdown == node_1_2nd_shutdown); + + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &node_0_3rd_shutdown).unwrap(); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_1_3rd_shutdown).unwrap(); + let node_0_2nd_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); + assert!(node_0_closing_signed == node_0_2nd_closing_signed); + + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed).unwrap(); + let (_, node_1_closing_signed) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed.unwrap()).unwrap(); + let (_, node_0_none) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); + assert!(node_0_none.is_none()); + } else { + // If one node, however, received + responded with an identical closing_signed we end + // up erroring and node[0] will try to broadcast its own latest commitment transaction. + // There isn't really anything better we can do simply, but in the future we might + // explore storing a set of recently-closed channels that got disconnected during + // closing_signed and avoiding broadcasting local commitment txn for some timeout to + // give our counterparty enough time to (potentially) broadcast a cooperative closing + // transaction. + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + + if let Err(msgs::HandleError{action: Some(msgs::ErrorAction::SendErrorMessage{msg}), ..}) = + nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish) { + nodes[0].node.handle_error(&nodes[1].node.get_our_node_id(), &msg); + let msgs::ErrorMessage {ref channel_id, ..} = msg; + assert_eq!(*channel_id, chan_1.2); + } else { panic!("Needed SendErrorMessage close"); } + + // get_closing_signed_broadcast usually eats the BroadcastChannelUpdate for us and + // checks it, but in this case nodes[0] didn't ever get a chance to receive a + // closing_signed so we do it ourselves + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { ref msg } => { + assert_eq!(msg.contents.flags & 2, 2); + }, + _ => panic!("Unexpected event"), + } + } + + assert!(nodes[0].node.list_channels().is_empty()); + + assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1); + nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear(); + close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true); + assert!(nodes[1].node.list_channels().is_empty()); + assert!(nodes[2].node.list_channels().is_empty()); +} + +#[test] +fn test_shutdown_rebroadcast() { + do_test_shutdown_rebroadcast(0); + do_test_shutdown_rebroadcast(1); + do_test_shutdown_rebroadcast(2); +} + +#[test] +fn fake_network_test() { + // Simple test which builds a network of ChannelManagers, connects them to each other, and + // tests that payments get routed and transactions broadcast in semi-reasonable ways. + let nodes = create_network(4); + + // Create some initial channels + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); + let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3); + + // Rebalance the network a bit by relaying one payment through all the channels... + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000); + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000); + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000); + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 8000000); + + // Send some more payments + send_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 1000000); + send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1], &nodes[0])[..], 1000000); + send_payment(&nodes[3], &vec!(&nodes[2], &nodes[1])[..], 1000000); + + // Test failure packets + let payment_hash_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], 1000000).1; + fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3])[..], payment_hash_1); + + // Add a new channel that skips 3 + let chan_4 = create_announced_chan_between_nodes(&nodes, 1, 3); + + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 1000000); + send_payment(&nodes[2], &vec!(&nodes[3])[..], 1000000); + send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000); + send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000); + send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000); + send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000); + send_payment(&nodes[1], &vec!(&nodes[3])[..], 8000000); + + // Do some rebalance loop payments, simultaneously + let mut hops = Vec::with_capacity(3); + hops.push(RouteHop { + pubkey: nodes[2].node.get_our_node_id(), + short_channel_id: chan_2.0.contents.short_channel_id, + fee_msat: 0, + cltv_expiry_delta: chan_3.0.contents.cltv_expiry_delta as u32 + }); + hops.push(RouteHop { + pubkey: nodes[3].node.get_our_node_id(), + short_channel_id: chan_3.0.contents.short_channel_id, + fee_msat: 0, + cltv_expiry_delta: chan_4.1.contents.cltv_expiry_delta as u32 + }); + hops.push(RouteHop { + pubkey: nodes[1].node.get_our_node_id(), + short_channel_id: chan_4.0.contents.short_channel_id, + fee_msat: 1000000, + cltv_expiry_delta: TEST_FINAL_CLTV, + }); + hops[1].fee_msat = chan_4.1.contents.fee_base_msat as u64 + chan_4.1.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000; + hops[0].fee_msat = chan_3.0.contents.fee_base_msat as u64 + chan_3.0.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000; + let payment_preimage_1 = send_along_route(&nodes[1], Route { hops }, &vec!(&nodes[2], &nodes[3], &nodes[1])[..], 1000000).0; + + let mut hops = Vec::with_capacity(3); + hops.push(RouteHop { + pubkey: nodes[3].node.get_our_node_id(), + short_channel_id: chan_4.0.contents.short_channel_id, + fee_msat: 0, + cltv_expiry_delta: chan_3.1.contents.cltv_expiry_delta as u32 + }); + hops.push(RouteHop { + pubkey: nodes[2].node.get_our_node_id(), + short_channel_id: chan_3.0.contents.short_channel_id, + fee_msat: 0, + cltv_expiry_delta: chan_2.1.contents.cltv_expiry_delta as u32 + }); + hops.push(RouteHop { + pubkey: nodes[1].node.get_our_node_id(), + short_channel_id: chan_2.0.contents.short_channel_id, + fee_msat: 1000000, + cltv_expiry_delta: TEST_FINAL_CLTV, + }); + hops[1].fee_msat = chan_2.1.contents.fee_base_msat as u64 + chan_2.1.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000; + hops[0].fee_msat = chan_3.1.contents.fee_base_msat as u64 + chan_3.1.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000; + let payment_hash_2 = send_along_route(&nodes[1], Route { hops }, &vec!(&nodes[3], &nodes[2], &nodes[1])[..], 1000000).1; + + // Claim the rebalances... + fail_payment(&nodes[1], &vec!(&nodes[3], &nodes[2], &nodes[1])[..], payment_hash_2); + claim_payment(&nodes[1], &vec!(&nodes[2], &nodes[3], &nodes[1])[..], payment_preimage_1); + + // Add a duplicate new channel from 2 to 4 + let chan_5 = create_announced_chan_between_nodes(&nodes, 1, 3); + + // Send some payments across both channels + let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0; + let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0; + let payment_preimage_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000).0; + + route_over_limit(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], 3000000); + + //TODO: Test that routes work again here as we've been notified that the channel is full + + claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_3); + claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_4); + claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[3])[..], payment_preimage_5); + + // Close down the channels... + close_channel(&nodes[0], &nodes[1], &chan_1.2, chan_1.3, true); + close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, false); + close_channel(&nodes[2], &nodes[3], &chan_3.2, chan_3.3, true); + close_channel(&nodes[1], &nodes[3], &chan_4.2, chan_4.3, false); + close_channel(&nodes[1], &nodes[3], &chan_5.2, chan_5.3, false); +} + +#[test] +fn duplicate_htlc_test() { + // Test that we accept duplicate payment_hash HTLCs across the network and that + // claiming/failing them are all separate and don't effect each other + let mut nodes = create_network(6); + + // Create some initial channels to route via 3 to 4/5 from 0/1/2 + create_announced_chan_between_nodes(&nodes, 0, 3); + create_announced_chan_between_nodes(&nodes, 1, 3); + create_announced_chan_between_nodes(&nodes, 2, 3); + create_announced_chan_between_nodes(&nodes, 3, 4); + create_announced_chan_between_nodes(&nodes, 3, 5); + + let (payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], 1000000); + + *nodes[0].network_payment_count.borrow_mut() -= 1; + assert_eq!(route_payment(&nodes[1], &vec!(&nodes[3])[..], 1000000).0, payment_preimage); + + *nodes[0].network_payment_count.borrow_mut() -= 1; + assert_eq!(route_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], 1000000).0, payment_preimage); + + claim_payment(&nodes[0], &vec!(&nodes[3], &nodes[4])[..], payment_preimage); + fail_payment(&nodes[2], &vec!(&nodes[3], &nodes[5])[..], payment_hash); + claim_payment(&nodes[1], &vec!(&nodes[3])[..], payment_preimage); +} + +#[derive(PartialEq)] +enum HTLCType { NONE, TIMEOUT, SUCCESS } +/// Tests that the given node has broadcast transactions for the given Channel +/// +/// First checks that the latest local commitment tx has been broadcast, unless an explicit +/// commitment_tx is provided, which may be used to test that a remote commitment tx was +/// broadcast and the revoked outputs were claimed. +/// +/// Next tests that there is (or is not) a transaction that spends the commitment transaction +/// that appears to be the type of HTLC transaction specified in has_htlc_tx. +/// +/// All broadcast transactions must be accounted for in one of the above three types of we'll +/// also fail. +fn test_txn_broadcast(node: &Node, chan: &(msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction), commitment_tx: Option, has_htlc_tx: HTLCType) -> Vec { + let mut node_txn = node.tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert!(node_txn.len() >= if commitment_tx.is_some() { 0 } else { 1 } + if has_htlc_tx == HTLCType::NONE { 0 } else { 1 }); + + let mut res = Vec::with_capacity(2); + node_txn.retain(|tx| { + if tx.input.len() == 1 && tx.input[0].previous_output.txid == chan.3.txid() { + check_spends!(tx, chan.3.clone()); + if commitment_tx.is_none() { + res.push(tx.clone()); + } + false + } else { true } + }); + if let Some(explicit_tx) = commitment_tx { + res.push(explicit_tx.clone()); + } + + assert_eq!(res.len(), 1); + + if has_htlc_tx != HTLCType::NONE { + node_txn.retain(|tx| { + if tx.input.len() == 1 && tx.input[0].previous_output.txid == res[0].txid() { + check_spends!(tx, res[0].clone()); + if has_htlc_tx == HTLCType::TIMEOUT { + assert!(tx.lock_time != 0); + } else { + assert!(tx.lock_time == 0); + } + res.push(tx.clone()); + false + } else { true } + }); + assert!(res.len() == 2 || res.len() == 3); + if res.len() == 3 { + assert_eq!(res[1], res[2]); + } + } + + assert!(node_txn.is_empty()); + res +} + +/// Tests that the given node has broadcast a claim transaction against the provided revoked +/// HTLC transaction. +fn test_revoked_htlc_claim_txn_broadcast(node: &Node, revoked_tx: Transaction) { + let mut node_txn = node.tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 1); + node_txn.retain(|tx| { + if tx.input.len() == 1 && tx.input[0].previous_output.txid == revoked_tx.txid() { + check_spends!(tx, revoked_tx.clone()); + false + } else { true } + }); + assert!(node_txn.is_empty()); +} + +fn check_preimage_claim(node: &Node, prev_txn: &Vec) -> Vec { + let mut node_txn = node.tx_broadcaster.txn_broadcasted.lock().unwrap(); + + assert!(node_txn.len() >= 1); + assert_eq!(node_txn[0].input.len(), 1); + let mut found_prev = false; + + for tx in prev_txn { + if node_txn[0].input[0].previous_output.txid == tx.txid() { + check_spends!(node_txn[0], tx.clone()); + assert!(node_txn[0].input[0].witness[2].len() > 106); // must spend an htlc output + assert_eq!(tx.input.len(), 1); // must spend a commitment tx + + found_prev = true; + break; + } + } + assert!(found_prev); + + let mut res = Vec::new(); + mem::swap(&mut *node_txn, &mut res); + res +} + +fn get_announce_close_broadcast_events(nodes: &Vec, a: usize, b: usize) { + let events_1 = nodes[a].node.get_and_clear_pending_msg_events(); + assert_eq!(events_1.len(), 1); + let as_update = match events_1[0] { + MessageSendEvent::BroadcastChannelUpdate { ref msg } => { + msg.clone() + }, + _ => panic!("Unexpected event"), + }; + + let events_2 = nodes[b].node.get_and_clear_pending_msg_events(); + assert_eq!(events_2.len(), 1); + let bs_update = match events_2[0] { + MessageSendEvent::BroadcastChannelUpdate { ref msg } => { + msg.clone() + }, + _ => panic!("Unexpected event"), + }; + + for node in nodes { + node.router.handle_channel_update(&as_update).unwrap(); + node.router.handle_channel_update(&bs_update).unwrap(); + } +} + +macro_rules! expect_pending_htlcs_forwardable { + ($node: expr) => {{ + let events = $node.node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PendingHTLCsForwardable { .. } => { }, + _ => panic!("Unexpected event"), + }; + $node.node.channel_state.lock().unwrap().next_forward = Instant::now(); + $node.node.process_pending_htlc_forwards(); + }} +} + +fn do_channel_reserve_test(test_recv: bool) { + use util::rng; + use std::sync::atomic::Ordering; + use ln::msgs::HandleError; + + macro_rules! get_channel_value_stat { + ($node: expr, $channel_id: expr) => {{ + let chan_lock = $node.node.channel_state.lock().unwrap(); + let chan = chan_lock.by_id.get(&$channel_id).unwrap(); + chan.get_value_stat() + }} + } + + let mut nodes = create_network(3); + let chan_1 = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1900, 1001); + let chan_2 = create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 1900, 1001); + + let mut stat01 = get_channel_value_stat!(nodes[0], chan_1.2); + let mut stat11 = get_channel_value_stat!(nodes[1], chan_1.2); + + let mut stat12 = get_channel_value_stat!(nodes[1], chan_2.2); + let mut stat22 = get_channel_value_stat!(nodes[2], chan_2.2); + + macro_rules! get_route_and_payment_hash { + ($recv_value: expr) => {{ + let route = nodes[0].router.get_route(&nodes.last().unwrap().node.get_our_node_id(), None, &Vec::new(), $recv_value, TEST_FINAL_CLTV).unwrap(); + let (payment_preimage, payment_hash) = get_payment_preimage_hash!(nodes[0]); + (route, payment_hash, payment_preimage) + }} + }; + + macro_rules! expect_forward { + ($node: expr) => {{ + let mut events = $node.node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + check_added_monitors!($node, 1); + let payment_event = SendEvent::from_event(events.remove(0)); + payment_event + }} + } + + macro_rules! expect_payment_received { + ($node: expr, $expected_payment_hash: expr, $expected_recv_value: expr) => { + let events = $node.node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentReceived { ref payment_hash, amt } => { + assert_eq!($expected_payment_hash, *payment_hash); + assert_eq!($expected_recv_value, amt); + }, + _ => panic!("Unexpected event"), + } + } + }; + + let feemsat = 239; // somehow we know? + let total_fee_msat = (nodes.len() - 2) as u64 * 239; + + let recv_value_0 = stat01.their_max_htlc_value_in_flight_msat - total_fee_msat; + + // attempt to send amt_msat > their_max_htlc_value_in_flight_msat + { + let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_0 + 1); + assert!(route.hops.iter().rev().skip(1).all(|h| h.fee_msat == feemsat)); + let err = nodes[0].node.send_payment(route, our_payment_hash).err().unwrap(); + match err { + APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our max HTLC value in flight"), + _ => panic!("Unknown error variants"), + } + } + + let mut htlc_id = 0; + // channel reserve is bigger than their_max_htlc_value_in_flight_msat so loop to deplete + // nodes[0]'s wealth + loop { + let amt_msat = recv_value_0 + total_fee_msat; + if stat01.value_to_self_msat - amt_msat < stat01.channel_reserve_msat { + break; + } + send_payment(&nodes[0], &vec![&nodes[1], &nodes[2]][..], recv_value_0); + htlc_id += 1; + + let (stat01_, stat11_, stat12_, stat22_) = ( + get_channel_value_stat!(nodes[0], chan_1.2), + get_channel_value_stat!(nodes[1], chan_1.2), + get_channel_value_stat!(nodes[1], chan_2.2), + get_channel_value_stat!(nodes[2], chan_2.2), + ); + + assert_eq!(stat01_.value_to_self_msat, stat01.value_to_self_msat - amt_msat); + assert_eq!(stat11_.value_to_self_msat, stat11.value_to_self_msat + amt_msat); + assert_eq!(stat12_.value_to_self_msat, stat12.value_to_self_msat - (amt_msat - feemsat)); + assert_eq!(stat22_.value_to_self_msat, stat22.value_to_self_msat + (amt_msat - feemsat)); + stat01 = stat01_; stat11 = stat11_; stat12 = stat12_; stat22 = stat22_; + } + + { + let recv_value = stat01.value_to_self_msat - stat01.channel_reserve_msat - total_fee_msat; + // attempt to get channel_reserve violation + let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value + 1); + let err = nodes[0].node.send_payment(route.clone(), our_payment_hash).err().unwrap(); + match err { + APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our reserve value"), + _ => panic!("Unknown error variants"), + } + } + + // adding pending output + let recv_value_1 = (stat01.value_to_self_msat - stat01.channel_reserve_msat - total_fee_msat)/2; + let amt_msat_1 = recv_value_1 + total_fee_msat; + + let (route_1, our_payment_hash_1, our_payment_preimage_1) = get_route_and_payment_hash!(recv_value_1); + let payment_event_1 = { + nodes[0].node.send_payment(route_1, our_payment_hash_1).unwrap(); + check_added_monitors!(nodes[0], 1); + + let mut events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + SendEvent::from_event(events.remove(0)) + }; + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event_1.msgs[0]).unwrap(); + + // channel reserve test with htlc pending output > 0 + let recv_value_2 = stat01.value_to_self_msat - amt_msat_1 - stat01.channel_reserve_msat - total_fee_msat; + { + let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_2 + 1); + match nodes[0].node.send_payment(route, our_payment_hash).err().unwrap() { + APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our reserve value"), + _ => panic!("Unknown error variants"), + } + } + + { + // test channel_reserve test on nodes[1] side + let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_2 + 1); + + // Need to manually create update_add_htlc message to go around the channel reserve check in send_htlc() + let secp_ctx = Secp256k1::new(); + let session_priv = SecretKey::from_slice(&secp_ctx, &{ + let mut session_key = [0; 32]; + rng::fill_bytes(&mut session_key); + session_key + }).expect("RNG is bad!"); + + let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1; + let onion_keys = onion_utils::construct_onion_keys(&secp_ctx, &route, &session_priv).unwrap(); + let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(&route, cur_height).unwrap(); + let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &our_payment_hash); + let msg = msgs::UpdateAddHTLC { + channel_id: chan_1.2, + htlc_id, + amount_msat: htlc_msat, + payment_hash: our_payment_hash, + cltv_expiry: htlc_cltv, + onion_routing_packet: onion_packet, + }; + + if test_recv { + let err = nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &msg).err().unwrap(); + match err { + HandleError{err, .. } => assert_eq!(err, "Remote HTLC add would put them over their reserve value"), + } + // If we send a garbage message, the channel should get closed, making the rest of this test case fail. + assert_eq!(nodes[1].node.list_channels().len(), 1); + assert_eq!(nodes[1].node.list_channels().len(), 1); + let channel_close_broadcast = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(channel_close_broadcast.len(), 1); + match channel_close_broadcast[0] { + MessageSendEvent::BroadcastChannelUpdate { ref msg } => { + assert_eq!(msg.contents.flags & 2, 2); + }, + _ => panic!("Unexpected event"), + } + return; + } + } + + // split the rest to test holding cell + let recv_value_21 = recv_value_2/2; + let recv_value_22 = recv_value_2 - recv_value_21 - total_fee_msat; + { + let stat = get_channel_value_stat!(nodes[0], chan_1.2); + assert_eq!(stat.value_to_self_msat - (stat.pending_outbound_htlcs_amount_msat + recv_value_21 + recv_value_22 + total_fee_msat + total_fee_msat), stat.channel_reserve_msat); + } + + // now see if they go through on both sides + let (route_21, our_payment_hash_21, our_payment_preimage_21) = get_route_and_payment_hash!(recv_value_21); + // but this will stuck in the holding cell + nodes[0].node.send_payment(route_21, our_payment_hash_21).unwrap(); + check_added_monitors!(nodes[0], 0); + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 0); + + // test with outbound holding cell amount > 0 + { + let (route, our_payment_hash, _) = get_route_and_payment_hash!(recv_value_22+1); + match nodes[0].node.send_payment(route, our_payment_hash).err().unwrap() { + APIError::ChannelUnavailable{err} => assert_eq!(err, "Cannot send value that would put us over our reserve value"), + _ => panic!("Unknown error variants"), + } + } + + let (route_22, our_payment_hash_22, our_payment_preimage_22) = get_route_and_payment_hash!(recv_value_22); + // this will also stuck in the holding cell + nodes[0].node.send_payment(route_22, our_payment_hash_22).unwrap(); + check_added_monitors!(nodes[0], 0); + assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + + // flush the pending htlc + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event_1.commitment_msg).unwrap(); + let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + check_added_monitors!(nodes[1], 1); + + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); + check_added_monitors!(nodes[0], 1); + let commitment_update_2 = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_commitment_signed).unwrap(); + let bs_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[0], 1); + + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[1], 1); + + expect_pending_htlcs_forwardable!(nodes[1]); + + let ref payment_event_11 = expect_forward!(nodes[1]); + nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_11.msgs[0]).unwrap(); + commitment_signed_dance!(nodes[2], nodes[1], payment_event_11.commitment_msg, false); + + expect_pending_htlcs_forwardable!(nodes[2]); + expect_payment_received!(nodes[2], our_payment_hash_1, recv_value_1); + + // flush the htlcs in the holding cell + assert_eq!(commitment_update_2.update_add_htlcs.len(), 2); + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[0]).unwrap(); + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &commitment_update_2.update_add_htlcs[1]).unwrap(); + commitment_signed_dance!(nodes[1], nodes[0], &commitment_update_2.commitment_signed, false); + expect_pending_htlcs_forwardable!(nodes[1]); + + let ref payment_event_3 = expect_forward!(nodes[1]); + assert_eq!(payment_event_3.msgs.len(), 2); + nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[0]).unwrap(); + nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event_3.msgs[1]).unwrap(); + + commitment_signed_dance!(nodes[2], nodes[1], &payment_event_3.commitment_msg, false); + expect_pending_htlcs_forwardable!(nodes[2]); + + let events = nodes[2].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 2); + match events[0] { + Event::PaymentReceived { ref payment_hash, amt } => { + assert_eq!(our_payment_hash_21, *payment_hash); + assert_eq!(recv_value_21, amt); + }, + _ => panic!("Unexpected event"), + } + match events[1] { + Event::PaymentReceived { ref payment_hash, amt } => { + assert_eq!(our_payment_hash_22, *payment_hash); + assert_eq!(recv_value_22, amt); + }, + _ => panic!("Unexpected event"), + } + + claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_1); + claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_21); + claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), our_payment_preimage_22); + + let expected_value_to_self = stat01.value_to_self_msat - (recv_value_1 + total_fee_msat) - (recv_value_21 + total_fee_msat) - (recv_value_22 + total_fee_msat); + let stat0 = get_channel_value_stat!(nodes[0], chan_1.2); + assert_eq!(stat0.value_to_self_msat, expected_value_to_self); + assert_eq!(stat0.value_to_self_msat, stat0.channel_reserve_msat); + + let stat2 = get_channel_value_stat!(nodes[2], chan_2.2); + assert_eq!(stat2.value_to_self_msat, stat22.value_to_self_msat + recv_value_1 + recv_value_21 + recv_value_22); +} + +#[test] +fn channel_reserve_test() { + do_channel_reserve_test(false); + do_channel_reserve_test(true); +} + +#[test] +fn channel_monitor_network_test() { + // Simple test which builds a network of ChannelManagers, connects them to each other, and + // tests that ChannelMonitor is able to recover from various states. + let nodes = create_network(5); + + // Create some initial channels + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); + let chan_3 = create_announced_chan_between_nodes(&nodes, 2, 3); + let chan_4 = create_announced_chan_between_nodes(&nodes, 3, 4); + + // Rebalance the network a bit by relaying one payment through all the channels... + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000); + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000); + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000); + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2], &nodes[3], &nodes[4])[..], 8000000); + + // Simple case with no pending HTLCs: + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), true); + { + let mut node_txn = test_txn_broadcast(&nodes[1], &chan_1, None, HTLCType::NONE); + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn.drain(..).next().unwrap()] }, 1); + test_txn_broadcast(&nodes[0], &chan_1, None, HTLCType::NONE); + } + get_announce_close_broadcast_events(&nodes, 0, 1); + assert_eq!(nodes[0].node.list_channels().len(), 0); + assert_eq!(nodes[1].node.list_channels().len(), 1); + + // One pending HTLC is discarded by the force-close: + let payment_preimage_1 = route_payment(&nodes[1], &vec!(&nodes[2], &nodes[3])[..], 3000000).0; + + // Simple case of one pending HTLC to HTLC-Timeout + nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), true); + { + let mut node_txn = test_txn_broadcast(&nodes[1], &chan_2, None, HTLCType::TIMEOUT); + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn.drain(..).next().unwrap()] }, 1); + test_txn_broadcast(&nodes[2], &chan_2, None, HTLCType::NONE); + } + get_announce_close_broadcast_events(&nodes, 1, 2); + assert_eq!(nodes[1].node.list_channels().len(), 0); + assert_eq!(nodes[2].node.list_channels().len(), 1); + + macro_rules! claim_funds { + ($node: expr, $prev_node: expr, $preimage: expr) => { + { + assert!($node.node.claim_funds($preimage)); + check_added_monitors!($node, 1); + + let events = $node.node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, .. } } => { + assert!(update_add_htlcs.is_empty()); + assert!(update_fail_htlcs.is_empty()); + assert_eq!(*node_id, $prev_node.node.get_our_node_id()); + }, + _ => panic!("Unexpected event"), + }; + } + } + } + + // nodes[3] gets the preimage, but nodes[2] already disconnected, resulting in a nodes[2] + // HTLC-Timeout and a nodes[3] claim against it (+ its own announces) + nodes[2].node.peer_disconnected(&nodes[3].node.get_our_node_id(), true); + { + let node_txn = test_txn_broadcast(&nodes[2], &chan_3, None, HTLCType::TIMEOUT); + + // Claim the payment on nodes[3], giving it knowledge of the preimage + claim_funds!(nodes[3], nodes[2], payment_preimage_1); + + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[3].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[0].clone()] }, 1); + + check_preimage_claim(&nodes[3], &node_txn); + } + get_announce_close_broadcast_events(&nodes, 2, 3); + assert_eq!(nodes[2].node.list_channels().len(), 0); + assert_eq!(nodes[3].node.list_channels().len(), 1); + + { // Cheat and reset nodes[4]'s height to 1 + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[4].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![] }, 1); + } + + assert_eq!(nodes[3].node.latest_block_height.load(Ordering::Acquire), 1); + assert_eq!(nodes[4].node.latest_block_height.load(Ordering::Acquire), 1); + // One pending HTLC to time out: + let payment_preimage_2 = route_payment(&nodes[3], &vec!(&nodes[4])[..], 3000000).0; + // CLTV expires at TEST_FINAL_CLTV + 1 (current height) + 1 (added in send_payment for + // buffer space). + + { + let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[3].chain_monitor.block_connected_checked(&header, 2, &Vec::new()[..], &[0; 0]); + for i in 3..TEST_FINAL_CLTV + 2 + HTLC_FAIL_TIMEOUT_BLOCKS + 1 { + header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[3].chain_monitor.block_connected_checked(&header, i, &Vec::new()[..], &[0; 0]); + } + + let node_txn = test_txn_broadcast(&nodes[3], &chan_4, None, HTLCType::TIMEOUT); + + // Claim the payment on nodes[4], giving it knowledge of the preimage + claim_funds!(nodes[4], nodes[3], payment_preimage_2); + + header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[4].chain_monitor.block_connected_checked(&header, 2, &Vec::new()[..], &[0; 0]); + for i in 3..TEST_FINAL_CLTV + 2 - CLTV_CLAIM_BUFFER + 1 { + header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[4].chain_monitor.block_connected_checked(&header, i, &Vec::new()[..], &[0; 0]); + } + + test_txn_broadcast(&nodes[4], &chan_4, None, HTLCType::SUCCESS); + + header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[4].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[0].clone()] }, TEST_FINAL_CLTV - 5); + + check_preimage_claim(&nodes[4], &node_txn); + } + get_announce_close_broadcast_events(&nodes, 3, 4); + assert_eq!(nodes[3].node.list_channels().len(), 0); + assert_eq!(nodes[4].node.list_channels().len(), 0); +} + +#[test] +fn test_justice_tx() { + // Test justice txn built on revoked HTLC-Success tx, against both sides + + let nodes = create_network(2); + // Create some new channels: + let chan_5 = create_announced_chan_between_nodes(&nodes, 0, 1); + + // A pending HTLC which will be revoked: + let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; + // Get the will-be-revoked local txn from nodes[0] + let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.iter().next().unwrap().1.last_local_commitment_txn.clone(); + assert_eq!(revoked_local_txn.len(), 2); // First commitment tx, then HTLC tx + assert_eq!(revoked_local_txn[0].input.len(), 1); + assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_5.3.txid()); + assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to 0 are present + assert_eq!(revoked_local_txn[1].input.len(), 1); + assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid()); + assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout + // Revoke the old state + claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_3); + + { + let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + { + let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 3); + assert_eq!(node_txn.pop().unwrap(), node_txn[0]); // An outpoint registration will result in a 2nd block_connected + assert_eq!(node_txn[0].input.len(), 2); // We should claim the revoked output and the HTLC output + + check_spends!(node_txn[0], revoked_local_txn[0].clone()); + node_txn.swap_remove(0); + } + test_txn_broadcast(&nodes[1], &chan_5, None, HTLCType::NONE); + + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + let node_txn = test_txn_broadcast(&nodes[0], &chan_5, Some(revoked_local_txn[0].clone()), HTLCType::TIMEOUT); + header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[1].clone()] }, 1); + test_revoked_htlc_claim_txn_broadcast(&nodes[1], node_txn[1].clone()); + } + get_announce_close_broadcast_events(&nodes, 0, 1); + + assert_eq!(nodes[0].node.list_channels().len(), 0); + assert_eq!(nodes[1].node.list_channels().len(), 0); + + // We test justice_tx build by A on B's revoked HTLC-Success tx + // Create some new channels: + let chan_6 = create_announced_chan_between_nodes(&nodes, 0, 1); + + // A pending HTLC which will be revoked: + let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; + // Get the will-be-revoked local txn from B + let revoked_local_txn = nodes[1].node.channel_state.lock().unwrap().by_id.iter().next().unwrap().1.last_local_commitment_txn.clone(); + assert_eq!(revoked_local_txn.len(), 1); // Only commitment tx + assert_eq!(revoked_local_txn[0].input.len(), 1); + assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_6.3.txid()); + assert_eq!(revoked_local_txn[0].output.len(), 2); // Only HTLC and output back to A are present + // Revoke the old state + claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_4); + { + let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + { + let mut node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 3); + assert_eq!(node_txn.pop().unwrap(), node_txn[0]); // An outpoint registration will result in a 2nd block_connected + assert_eq!(node_txn[0].input.len(), 1); // We claim the received HTLC output + + check_spends!(node_txn[0], revoked_local_txn[0].clone()); + node_txn.swap_remove(0); + } + test_txn_broadcast(&nodes[0], &chan_6, None, HTLCType::NONE); + + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + let node_txn = test_txn_broadcast(&nodes[1], &chan_6, Some(revoked_local_txn[0].clone()), HTLCType::SUCCESS); + header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[1].clone()] }, 1); + test_revoked_htlc_claim_txn_broadcast(&nodes[0], node_txn[1].clone()); + } + get_announce_close_broadcast_events(&nodes, 0, 1); + assert_eq!(nodes[0].node.list_channels().len(), 0); + assert_eq!(nodes[1].node.list_channels().len(), 0); +} + +#[test] +fn revoked_output_claim() { + // Simple test to ensure a node will claim a revoked output when a stale remote commitment + // transaction is broadcast by its counterparty + let nodes = create_network(2); + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + // node[0] is gonna to revoke an old state thus node[1] should be able to claim the revoked output + let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); + assert_eq!(revoked_local_txn.len(), 1); + // Only output is the full channel value back to nodes[0]: + assert_eq!(revoked_local_txn[0].output.len(), 1); + // Send a payment through, updating everyone's latest commitment txn + send_payment(&nodes[0], &vec!(&nodes[1])[..], 5000000); + + // Inform nodes[1] that nodes[0] broadcast a stale tx + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 3); // nodes[1] will broadcast justice tx twice, and its own local state once + + assert_eq!(node_txn[0], node_txn[2]); + + check_spends!(node_txn[0], revoked_local_txn[0].clone()); + check_spends!(node_txn[1], chan_1.3.clone()); + + // Inform nodes[0] that a watchtower cheated on its behalf, so it will force-close the chan + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + get_announce_close_broadcast_events(&nodes, 0, 1); +} + +#[test] +fn claim_htlc_outputs_shared_tx() { + // Node revoked old state, htlcs haven't time out yet, claim them in shared justice tx + let nodes = create_network(2); + + // Create some new channel: + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + + // Rebalance the network to generate htlc in the two directions + send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000); + // node[0] is gonna to revoke an old state thus node[1] should be able to claim both offered/received HTLC outputs on top of commitment tx + let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; + let (_payment_preimage_2, payment_hash_2) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000); + + // Get the will-be-revoked local txn from node[0] + let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); + assert_eq!(revoked_local_txn.len(), 2); // commitment tx + 1 HTLC-Timeout tx + assert_eq!(revoked_local_txn[0].input.len(), 1); + assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid()); + assert_eq!(revoked_local_txn[1].input.len(), 1); + assert_eq!(revoked_local_txn[1].input[0].previous_output.txid, revoked_local_txn[0].txid()); + assert_eq!(revoked_local_txn[1].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); // HTLC-Timeout + check_spends!(revoked_local_txn[1], revoked_local_txn[0].clone()); + + //Revoke the old state + claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1); + + { + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + + let events = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentFailed { payment_hash, .. } => { + assert_eq!(payment_hash, payment_hash_2); + }, + _ => panic!("Unexpected event"), + } + + let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 4); + + assert_eq!(node_txn[0].input.len(), 3); // Claim the revoked output + both revoked HTLC outputs + check_spends!(node_txn[0], revoked_local_txn[0].clone()); + + assert_eq!(node_txn[0], node_txn[3]); // justice tx is duplicated due to block re-scanning + + let mut witness_lens = BTreeSet::new(); + witness_lens.insert(node_txn[0].input[0].witness.last().unwrap().len()); + witness_lens.insert(node_txn[0].input[1].witness.last().unwrap().len()); + witness_lens.insert(node_txn[0].input[2].witness.last().unwrap().len()); + assert_eq!(witness_lens.len(), 3); + assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local + assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC + assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC + + // Next nodes[1] broadcasts its current local tx state: + assert_eq!(node_txn[1].input.len(), 1); + assert_eq!(node_txn[1].input[0].previous_output.txid, chan_1.3.txid()); //Spending funding tx unique txouput, tx broadcasted by ChannelManager + + assert_eq!(node_txn[2].input.len(), 1); + let witness_script = node_txn[2].clone().input[0].witness.pop().unwrap(); + assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output + assert_eq!(node_txn[2].input[0].previous_output.txid, node_txn[1].txid()); + assert_ne!(node_txn[2].input[0].previous_output.txid, node_txn[0].input[0].previous_output.txid); + assert_ne!(node_txn[2].input[0].previous_output.txid, node_txn[0].input[1].previous_output.txid); + } + get_announce_close_broadcast_events(&nodes, 0, 1); + assert_eq!(nodes[0].node.list_channels().len(), 0); + assert_eq!(nodes[1].node.list_channels().len(), 0); +} + +#[test] +fn claim_htlc_outputs_single_tx() { + // Node revoked old state, htlcs have timed out, claim each of them in separated justice tx + let nodes = create_network(2); + + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + + // Rebalance the network to generate htlc in the two directions + send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000); + // node[0] is gonna to revoke an old state thus node[1] should be able to claim both offered/received HTLC outputs on top of commitment tx, but this + // time as two different claim transactions as we're gonna to timeout htlc with given a high current height + let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; + let (_payment_preimage_2, payment_hash_2) = route_payment(&nodes[1], &vec!(&nodes[0])[..], 3000000); + + // Get the will-be-revoked local txn from node[0] + let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); + + //Revoke the old state + claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage_1); + + { + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 200); + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 200); + + let events = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentFailed { payment_hash, .. } => { + assert_eq!(payment_hash, payment_hash_2); + }, + _ => panic!("Unexpected event"), + } + + let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 12); // ChannelManager : 2, ChannelMontitor: 8 (1 standard revoked output, 2 revocation htlc tx, 1 local commitment tx + 1 htlc timeout tx) * 2 (block-rescan) + + assert_eq!(node_txn[0], node_txn[7]); + assert_eq!(node_txn[1], node_txn[8]); + assert_eq!(node_txn[2], node_txn[9]); + assert_eq!(node_txn[3], node_txn[10]); + assert_eq!(node_txn[4], node_txn[11]); + assert_eq!(node_txn[3], node_txn[5]); //local commitment tx + htlc timeout tx broadcated by ChannelManger + assert_eq!(node_txn[4], node_txn[6]); + + assert_eq!(node_txn[0].input.len(), 1); + assert_eq!(node_txn[1].input.len(), 1); + assert_eq!(node_txn[2].input.len(), 1); + + let mut revoked_tx_map = HashMap::new(); + revoked_tx_map.insert(revoked_local_txn[0].txid(), revoked_local_txn[0].clone()); + node_txn[0].verify(&revoked_tx_map).unwrap(); + node_txn[1].verify(&revoked_tx_map).unwrap(); + node_txn[2].verify(&revoked_tx_map).unwrap(); + + let mut witness_lens = BTreeSet::new(); + witness_lens.insert(node_txn[0].input[0].witness.last().unwrap().len()); + witness_lens.insert(node_txn[1].input[0].witness.last().unwrap().len()); + witness_lens.insert(node_txn[2].input[0].witness.last().unwrap().len()); + assert_eq!(witness_lens.len(), 3); + assert_eq!(*witness_lens.iter().skip(0).next().unwrap(), 77); // revoked to_local + assert_eq!(*witness_lens.iter().skip(1).next().unwrap(), OFFERED_HTLC_SCRIPT_WEIGHT); // revoked offered HTLC + assert_eq!(*witness_lens.iter().skip(2).next().unwrap(), ACCEPTED_HTLC_SCRIPT_WEIGHT); // revoked received HTLC + + assert_eq!(node_txn[3].input.len(), 1); + check_spends!(node_txn[3], chan_1.3.clone()); + + assert_eq!(node_txn[4].input.len(), 1); + let witness_script = node_txn[4].input[0].witness.last().unwrap(); + assert_eq!(witness_script.len(), OFFERED_HTLC_SCRIPT_WEIGHT); //Spending an offered htlc output + assert_eq!(node_txn[4].input[0].previous_output.txid, node_txn[3].txid()); + assert_ne!(node_txn[4].input[0].previous_output.txid, node_txn[0].input[0].previous_output.txid); + assert_ne!(node_txn[4].input[0].previous_output.txid, node_txn[1].input[0].previous_output.txid); + } + get_announce_close_broadcast_events(&nodes, 0, 1); + assert_eq!(nodes[0].node.list_channels().len(), 0); + assert_eq!(nodes[1].node.list_channels().len(), 0); +} + +#[test] +fn test_htlc_on_chain_success() { + // Test that in case of an unilateral close onchain, we detect the state of output thanks to + // ChainWatchInterface and pass the preimage backward accordingly. So here we test that ChannelManager is + // broadcasting the right event to other nodes in payment path. + // A --------------------> B ----------------------> C (preimage) + // First, C should claim the HTLC output via HTLC-Success when its own latest local + // commitment transaction was broadcast. + // Then, B should learn the preimage from said transactions, attempting to claim backwards + // towards B. + // B should be able to claim via preimage if A then broadcasts its local tx. + // Finally, when A sees B's latest local commitment transaction it should be able to claim + // the HTLC output via the preimage it learned (which, once confirmed should generate a + // PaymentSent event). + + let nodes = create_network(3); + + // Create some initial channels + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); + + // Rebalance the network a bit by relaying one payment through all the channels... + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000); + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000); + + let (our_payment_preimage, _payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000); + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42}; + + // Broadcast legit commitment tx from C on B's chain + // Broadcast HTLC Success transation by C on received output from C's commitment tx on B's chain + let commitment_tx = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone(); + assert_eq!(commitment_tx.len(), 1); + check_spends!(commitment_tx[0], chan_2.3.clone()); + nodes[2].node.claim_funds(our_payment_preimage); + check_added_monitors!(nodes[2], 1); + let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert_eq!(updates.update_fulfill_htlcs.len(), 1); + + nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1); + let events = nodes[2].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx), ChannelMonitor : 2 (2 * HTLC-Success tx) + assert_eq!(node_txn.len(), 3); + assert_eq!(node_txn[1], commitment_tx[0]); + assert_eq!(node_txn[0], node_txn[2]); + check_spends!(node_txn[0], commitment_tx[0].clone()); + assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); + assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output + assert_eq!(node_txn[0].lock_time, 0); + + // Verify that B's ChannelManager is able to extract preimage from HTLC Success tx and pass it backward + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: node_txn}, 1); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + { + let mut added_monitors = nodes[1].chan_monitor.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), 1); + assert_eq!(added_monitors[0].0.txid, chan_1.3.txid()); + added_monitors.clear(); + } + assert_eq!(events.len(), 2); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + match events[1] { + MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => { + assert!(update_add_htlcs.is_empty()); + assert!(update_fail_htlcs.is_empty()); + assert_eq!(update_fulfill_htlcs.len(), 1); + assert!(update_fail_malformed_htlcs.is_empty()); + assert_eq!(nodes[0].node.get_our_node_id(), *node_id); + }, + _ => panic!("Unexpected event"), + }; + { + // nodes[1] now broadcasts its own local state as a fallback, suggesting an alternate + // commitment transaction with a corresponding HTLC-Timeout transaction, as well as a + // timeout-claim of the output that nodes[2] just claimed via success. + let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 1 (timeout tx) * 2 (block-rescan) + assert_eq!(node_txn.len(), 4); + assert_eq!(node_txn[0], node_txn[3]); + check_spends!(node_txn[0], commitment_tx[0].clone()); + assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); + assert_ne!(node_txn[0].lock_time, 0); + assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment + check_spends!(node_txn[1], chan_2.3.clone()); + check_spends!(node_txn[2], node_txn[1].clone()); + assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), 71); + assert_eq!(node_txn[2].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); + assert!(node_txn[2].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output + assert_ne!(node_txn[2].lock_time, 0); + node_txn.clear(); + } + + // Broadcast legit commitment tx from A on B's chain + // Broadcast preimage tx by B on offered output from A commitment tx on A's chain + let commitment_tx = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); + check_spends!(commitment_tx[0], chan_1.3.clone()); + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx), ChannelMonitor : 1 (HTLC-Success) * 2 (block-rescan) + assert_eq!(node_txn.len(), 3); + assert_eq!(node_txn[0], node_txn[2]); + check_spends!(node_txn[0], commitment_tx[0].clone()); + assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); + assert_eq!(node_txn[0].lock_time, 0); + assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment + check_spends!(node_txn[1], chan_1.3.clone()); + assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), 71); + // We don't bother to check that B can claim the HTLC output on its commitment tx here as + // we already checked the same situation with A. + + // Verify that A's ChannelManager is able to extract preimage from preimage tx and generate PaymentSent + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone(), node_txn[0].clone()] }, 1); + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentSent { payment_preimage } => { + assert_eq!(payment_preimage, our_payment_preimage); + }, + _ => panic!("Unexpected event"), + } + let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 1 (HTLC-Timeout tx) * 2 (block-rescan) + assert_eq!(node_txn.len(), 4); + assert_eq!(node_txn[0], node_txn[3]); + check_spends!(node_txn[0], commitment_tx[0].clone()); + assert_eq!(node_txn[0].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); + assert_ne!(node_txn[0].lock_time, 0); + assert!(node_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output + check_spends!(node_txn[1], chan_1.3.clone()); + check_spends!(node_txn[2], node_txn[1].clone()); + assert_eq!(node_txn[1].input[0].witness.clone().last().unwrap().len(), 71); + assert_eq!(node_txn[2].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); + assert!(node_txn[2].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output + assert_ne!(node_txn[2].lock_time, 0); +} + +#[test] +fn test_htlc_on_chain_timeout() { + // Test that in case of an unilateral close onchain, we detect the state of output thanks to + // ChainWatchInterface and timeout the HTLC bacward accordingly. So here we test that ChannelManager is + // broadcasting the right event to other nodes in payment path. + // A ------------------> B ----------------------> C (timeout) + // B's commitment tx C's commitment tx + // \ \ + // B's HTLC timeout tx B's timeout tx + + let nodes = create_network(3); + + // Create some intial channels + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); + + // Rebalance the network a bit by relaying one payment thorugh all the channels... + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000); + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000); + + let (_payment_preimage, payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000); + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42}; + + // Brodacast legit commitment tx from C on B's chain + let commitment_tx = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone(); + check_spends!(commitment_tx[0], chan_2.3.clone()); + nodes[2].node.fail_htlc_backwards(&payment_hash, 0); + { + let mut added_monitors = nodes[2].chan_monitor.added_monitors.lock().unwrap(); + assert_eq!(added_monitors.len(), 1); + added_monitors.clear(); + } + let events = nodes[2].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, .. } } => { + assert!(update_add_htlcs.is_empty()); + assert!(!update_fail_htlcs.is_empty()); + assert!(update_fulfill_htlcs.is_empty()); + assert!(update_fail_malformed_htlcs.is_empty()); + assert_eq!(nodes[1].node.get_our_node_id(), *node_id); + }, + _ => panic!("Unexpected event"), + }; + nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1); + let events = nodes[2].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {}, + _ => panic!("Unexpected event"), + } + let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 1 (commitment tx) + assert_eq!(node_txn.len(), 1); + check_spends!(node_txn[0], chan_2.3.clone()); + assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), 71); + + // Broadcast timeout transaction by B on received output fron C's commitment tx on B's chain + // Verify that B's ChannelManager is able to detect that HTLC is timeout by its own tx and react backward in consequence + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 200); + let timeout_tx; + { + let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 8); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 6 (HTLC-Timeout tx, commitment tx, timeout tx) * 2 (block-rescan) + assert_eq!(node_txn[0], node_txn[5]); + assert_eq!(node_txn[1], node_txn[6]); + assert_eq!(node_txn[2], node_txn[7]); + check_spends!(node_txn[0], commitment_tx[0].clone()); + assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); + check_spends!(node_txn[1], chan_2.3.clone()); + check_spends!(node_txn[2], node_txn[1].clone()); + assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), 71); + assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); + check_spends!(node_txn[3], chan_2.3.clone()); + check_spends!(node_txn[4], node_txn[3].clone()); + assert_eq!(node_txn[3].input[0].witness.clone().last().unwrap().len(), 71); + assert_eq!(node_txn[4].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); + timeout_tx = node_txn[0].clone(); + node_txn.clear(); + } + + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![timeout_tx]}, 1); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + check_added_monitors!(nodes[1], 1); + assert_eq!(events.len(), 2); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {}, + _ => panic!("Unexpected event"), + } + match events[1] { + MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => { + assert!(update_add_htlcs.is_empty()); + assert!(!update_fail_htlcs.is_empty()); + assert!(update_fulfill_htlcs.is_empty()); + assert!(update_fail_malformed_htlcs.is_empty()); + assert_eq!(nodes[0].node.get_our_node_id(), *node_id); + }, + _ => panic!("Unexpected event"), + }; + let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // Well... here we detect our own htlc_timeout_tx so no tx to be generated + assert_eq!(node_txn.len(), 0); + + // Broadcast legit commitment tx from B on A's chain + let commitment_tx = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); + check_spends!(commitment_tx[0], chan_1.3.clone()); + + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 200); + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {}, + _ => panic!("Unexpected event"), + } + let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Timeout tx), ChannelMonitor : 2 (timeout tx) * 2 block-rescan + assert_eq!(node_txn.len(), 4); + assert_eq!(node_txn[0], node_txn[3]); + check_spends!(node_txn[0], commitment_tx[0].clone()); + assert_eq!(node_txn[0].clone().input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); + check_spends!(node_txn[1], chan_1.3.clone()); + check_spends!(node_txn[2], node_txn[1].clone()); + assert_eq!(node_txn[1].clone().input[0].witness.last().unwrap().len(), 71); + assert_eq!(node_txn[2].clone().input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); +} + +#[test] +fn test_simple_commitment_revoked_fail_backward() { + // Test that in case of a revoked commitment tx, we detect the resolution of output by justice tx + // and fail backward accordingly. + + let nodes = create_network(3); + + // Create some initial channels + create_announced_chan_between_nodes(&nodes, 0, 1); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); + + let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000); + // Get the will-be-revoked local txn from nodes[2] + let revoked_local_txn = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone(); + // Revoke the old state + claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage); + + route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000); + + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42}; + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + check_added_monitors!(nodes[1], 1); + assert_eq!(events.len(), 2); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {}, + _ => panic!("Unexpected event"), + } + match events[1] { + MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref commitment_signed, .. } } => { + assert!(update_add_htlcs.is_empty()); + assert_eq!(update_fail_htlcs.len(), 1); + assert!(update_fulfill_htlcs.is_empty()); + assert!(update_fail_malformed_htlcs.is_empty()); + assert_eq!(nodes[0].node.get_our_node_id(), *node_id); + + nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]).unwrap(); + commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true); + + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentFailed { .. } => {}, + _ => panic!("Unexpected event"), + } + }, + _ => panic!("Unexpected event"), + } +} + +fn do_test_commitment_revoked_fail_backward_exhaustive(deliver_bs_raa: bool) { + // Test that if our counterparty broadcasts a revoked commitment transaction we fail all + // pending HTLCs on that channel backwards even if the HTLCs aren't present in our latest + // commitment transaction anymore. + // To do this, we have the peer which will broadcast a revoked commitment transaction send + // a number of update_fail/commitment_signed updates without ever sending the RAA in + // response to our commitment_signed. This is somewhat misbehavior-y, though not + // technically disallowed and we should probably handle it reasonably. + // Note that this is pretty exhaustive as an outbound HTLC which we haven't yet + // failed/fulfilled backwards must be in at least one of the latest two remote commitment + // transactions: + // * Once we move it out of our holding cell/add it, we will immediately include it in a + // commitment_signed (implying it will be in the latest remote commitment transaction). + // * Once they remove it, we will send a (the first) commitment_signed without the HTLC, + // and once they revoke the previous commitment transaction (allowing us to send a new + // commitment_signed) we will be free to fail/fulfill the HTLC backwards. + let mut nodes = create_network(3); + + // Create some initial channels + create_announced_chan_between_nodes(&nodes, 0, 1); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); + + let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000); + // Get the will-be-revoked local txn from nodes[2] + let revoked_local_txn = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone(); + // Revoke the old state + claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage); + + let (_, first_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000); + let (_, second_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000); + let (_, third_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000); + + assert!(nodes[2].node.fail_htlc_backwards(&first_payment_hash, 0)); + check_added_monitors!(nodes[2], 1); + let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fulfill_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert_eq!(updates.update_fail_htlcs.len(), 1); + assert!(updates.update_fee.is_none()); + nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap(); + let bs_raa = commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false, true, false, true); + // Drop the last RAA from 3 -> 2 + + assert!(nodes[2].node.fail_htlc_backwards(&second_payment_hash, 0)); + check_added_monitors!(nodes[2], 1); + let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fulfill_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert_eq!(updates.update_fail_htlcs.len(), 1); + assert!(updates.update_fee.is_none()); + nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap(); + nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed).unwrap(); + check_added_monitors!(nodes[1], 1); + // Note that nodes[1] is in AwaitingRAA, so won't send a CS + let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id()); + nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa).unwrap(); + check_added_monitors!(nodes[2], 1); + + assert!(nodes[2].node.fail_htlc_backwards(&third_payment_hash, 0)); + check_added_monitors!(nodes[2], 1); + let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fulfill_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert_eq!(updates.update_fail_htlcs.len(), 1); + assert!(updates.update_fee.is_none()); + nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap(); + // At this point first_payment_hash has dropped out of the latest two commitment + // transactions that nodes[1] is tracking... + nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &updates.commitment_signed).unwrap(); + check_added_monitors!(nodes[1], 1); + // Note that nodes[1] is (still) in AwaitingRAA, so won't send a CS + let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id()); + nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa).unwrap(); + check_added_monitors!(nodes[2], 1); + + // Add a fourth HTLC, this one will get sequestered away in nodes[1]'s holding cell waiting + // on nodes[2]'s RAA. + let route = nodes[1].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); + let (_, fourth_payment_hash) = get_payment_preimage_hash!(nodes[0]); + nodes[1].node.send_payment(route, fourth_payment_hash).unwrap(); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + assert!(nodes[1].node.get_and_clear_pending_events().is_empty()); + check_added_monitors!(nodes[1], 0); + + if deliver_bs_raa { + nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_raa).unwrap(); + // One monitor for the new revocation preimage, one as we generate a commitment for + // nodes[0] to fail first_payment_hash backwards. + check_added_monitors!(nodes[1], 2); + } + + let mut failed_htlcs = HashSet::new(); + assert!(nodes[1].node.get_and_clear_pending_events().is_empty()); + + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42}; + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + + let events = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentFailed { ref payment_hash, .. } => { + assert_eq!(*payment_hash, fourth_payment_hash); + }, + _ => panic!("Unexpected event"), + } + + if !deliver_bs_raa { + // If we delivered the RAA already then we already failed first_payment_hash backwards. + check_added_monitors!(nodes[1], 1); + } + + let events = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), if deliver_bs_raa { 3 } else { 2 }); + match events[if deliver_bs_raa { 2 } else { 0 }] { + MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {}, + _ => panic!("Unexpected event"), + } + if deliver_bs_raa { + match events[0] { + MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => { + assert_eq!(nodes[2].node.get_our_node_id(), *node_id); + assert_eq!(update_add_htlcs.len(), 1); + assert!(update_fulfill_htlcs.is_empty()); + assert!(update_fail_htlcs.is_empty()); + assert!(update_fail_malformed_htlcs.is_empty()); + }, + _ => panic!("Unexpected event"), + } + } + // Due to the way backwards-failing occurs we do the updates in two steps. + let updates = match events[1] { + MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref commitment_signed, .. } } => { + assert!(update_add_htlcs.is_empty()); + assert_eq!(update_fail_htlcs.len(), 1); + assert!(update_fulfill_htlcs.is_empty()); + assert!(update_fail_malformed_htlcs.is_empty()); + assert_eq!(nodes[0].node.get_our_node_id(), *node_id); + + nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]).unwrap(); + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed).unwrap(); + check_added_monitors!(nodes[0], 1); + let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); + check_added_monitors!(nodes[1], 1); + let bs_second_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed).unwrap(); + check_added_monitors!(nodes[1], 1); + let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); + check_added_monitors!(nodes[0], 1); + + if !deliver_bs_raa { + // If we delievered B's RAA we got an unknown preimage error, not something + // that we should update our routing table for. + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + } + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentFailed { ref payment_hash, .. } => { + assert!(failed_htlcs.insert(payment_hash.0)); + }, + _ => panic!("Unexpected event"), + } + + bs_second_update + }, + _ => panic!("Unexpected event"), + }; + + assert!(updates.update_add_htlcs.is_empty()); + assert_eq!(updates.update_fail_htlcs.len(), 2); + assert!(updates.update_fulfill_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap(); + nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fail_htlcs[1]).unwrap(); + commitment_signed_dance!(nodes[0], nodes[1], updates.commitment_signed, false, true); + + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 2); + for event in events { + match event { + MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + } + + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 2); + match events[0] { + Event::PaymentFailed { ref payment_hash, .. } => { + assert!(failed_htlcs.insert(payment_hash.0)); + }, + _ => panic!("Unexpected event"), + } + match events[1] { + Event::PaymentFailed { ref payment_hash, .. } => { + assert!(failed_htlcs.insert(payment_hash.0)); + }, + _ => panic!("Unexpected event"), + } + + assert!(failed_htlcs.contains(&first_payment_hash.0)); + assert!(failed_htlcs.contains(&second_payment_hash.0)); + assert!(failed_htlcs.contains(&third_payment_hash.0)); +} + +#[test] +fn test_commitment_revoked_fail_backward_exhaustive() { + do_test_commitment_revoked_fail_backward_exhaustive(false); + do_test_commitment_revoked_fail_backward_exhaustive(true); +} + +#[test] +fn test_htlc_ignore_latest_remote_commitment() { + // Test that HTLC transactions spending the latest remote commitment transaction are simply + // ignored if we cannot claim them. This originally tickled an invalid unwrap(). + let nodes = create_network(2); + create_announced_chan_between_nodes(&nodes, 0, 1); + + route_payment(&nodes[0], &[&nodes[1]], 10000000); + nodes[0].node.force_close_channel(&nodes[0].node.list_channels()[0].channel_id); + { + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { contents: msgs::UnsignedChannelUpdate { flags, .. }, .. } } => { + assert_eq!(flags & 0b10, 0b10); + }, + _ => panic!("Unexpected event"), + } + } + + let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 2); + + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&node_txn[0], &node_txn[1]], &[1; 2]); + + { + let events = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { contents: msgs::UnsignedChannelUpdate { flags, .. }, .. } } => { + assert_eq!(flags & 0b10, 0b10); + }, + _ => panic!("Unexpected event"), + } + } + + // Duplicate the block_connected call since this may happen due to other listeners + // registering new transactions + nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&node_txn[0], &node_txn[1]], &[1; 2]); +} + +#[test] +fn test_force_close_fail_back() { + // Check which HTLCs are failed-backwards on channel force-closure + let mut nodes = create_network(3); + create_announced_chan_between_nodes(&nodes, 0, 1); + create_announced_chan_between_nodes(&nodes, 1, 2); + + let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, 42).unwrap(); + + let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[0]); + + let mut payment_event = { + nodes[0].node.send_payment(route, our_payment_hash).unwrap(); + check_added_monitors!(nodes[0], 1); + + let mut events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + SendEvent::from_event(events.remove(0)) + }; + + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); + commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false); + + let events_1 = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events_1.len(), 1); + match events_1[0] { + Event::PendingHTLCsForwardable { .. } => { }, + _ => panic!("Unexpected event"), + }; + + nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now(); + nodes[1].node.process_pending_htlc_forwards(); + + let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events_2.len(), 1); + payment_event = SendEvent::from_event(events_2.remove(0)); + assert_eq!(payment_event.msgs.len(), 1); + + check_added_monitors!(nodes[1], 1); + nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); + nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); + check_added_monitors!(nodes[2], 1); + let (_, _) = get_revoke_commit_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + + // nodes[2] now has the latest commitment transaction, but hasn't revoked its previous + // state or updated nodes[1]' state. Now force-close and broadcast that commitment/HTLC + // transaction and ensure nodes[1] doesn't fail-backwards (this was originally a bug!). + + nodes[2].node.force_close_channel(&payment_event.commitment_msg.channel_id); + let events_3 = nodes[2].node.get_and_clear_pending_msg_events(); + assert_eq!(events_3.len(), 1); + match events_3[0] { + MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { contents: msgs::UnsignedChannelUpdate { flags, .. }, .. } } => { + assert_eq!(flags & 0b10, 0b10); + }, + _ => panic!("Unexpected event"), + } + + let tx = { + let mut node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap(); + // Note that we don't bother broadcasting the HTLC-Success transaction here as we don't + // have a use for it unless nodes[2] learns the preimage somehow, the funds will go + // back to nodes[1] upon timeout otherwise. + assert_eq!(node_txn.len(), 1); + node_txn.remove(0) + }; + + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[1].chain_monitor.block_connected_checked(&header, 1, &[&tx], &[1]); + + let events_4 = nodes[1].node.get_and_clear_pending_msg_events(); + // Note no UpdateHTLCs event here from nodes[1] to nodes[0]! + assert_eq!(events_4.len(), 1); + match events_4[0] { + MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { contents: msgs::UnsignedChannelUpdate { flags, .. }, .. } } => { + assert_eq!(flags & 0b10, 0b10); + }, + _ => panic!("Unexpected event"), + } + + // Now check that if we add the preimage to ChannelMonitor it broadcasts our HTLC-Success.. + { + let mut monitors = nodes[2].chan_monitor.simple_monitor.monitors.lock().unwrap(); + monitors.get_mut(&OutPoint::new(Sha256dHash::from(&payment_event.commitment_msg.channel_id[..]), 0)).unwrap() + .provide_payment_preimage(&our_payment_hash, &our_payment_preimage); + } + nodes[2].chain_monitor.block_connected_checked(&header, 1, &[&tx], &[1]); + let node_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 1); + assert_eq!(node_txn[0].input.len(), 1); + assert_eq!(node_txn[0].input[0].previous_output.txid, tx.txid()); + assert_eq!(node_txn[0].lock_time, 0); // Must be an HTLC-Success + assert_eq!(node_txn[0].input[0].witness.len(), 5); // Must be an HTLC-Success + + check_spends!(node_txn[0], tx); +} + +#[test] +fn test_unconf_chan() { + // After creating a chan between nodes, we disconnect all blocks previously seen to force a channel close on nodes[0] side + let nodes = create_network(2); + create_announced_chan_between_nodes(&nodes, 0, 1); + + let channel_state = nodes[0].node.channel_state.lock().unwrap(); + assert_eq!(channel_state.by_id.len(), 1); + assert_eq!(channel_state.short_to_id.len(), 1); + mem::drop(channel_state); + + let mut headers = Vec::new(); + let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + headers.push(header.clone()); + for _i in 2..100 { + header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + headers.push(header.clone()); + } + while !headers.is_empty() { + nodes[0].node.block_disconnected(&headers.pop().unwrap()); + } + { + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { contents: msgs::UnsignedChannelUpdate { flags, .. }, .. } } => { + assert_eq!(flags & 0b10, 0b10); + }, + _ => panic!("Unexpected event"), + } + } + let channel_state = nodes[0].node.channel_state.lock().unwrap(); + assert_eq!(channel_state.by_id.len(), 0); + assert_eq!(channel_state.short_to_id.len(), 0); +} + +macro_rules! get_chan_reestablish_msgs { + ($src_node: expr, $dst_node: expr) => { + { + let mut res = Vec::with_capacity(1); + for msg in $src_node.node.get_and_clear_pending_msg_events() { + if let MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } = msg { + assert_eq!(*node_id, $dst_node.node.get_our_node_id()); + res.push(msg.clone()); + } else { + panic!("Unexpected event") + } + } + res + } + } +} + +macro_rules! handle_chan_reestablish_msgs { + ($src_node: expr, $dst_node: expr) => { + { + let msg_events = $src_node.node.get_and_clear_pending_msg_events(); + let mut idx = 0; + let funding_locked = if let Some(&MessageSendEvent::SendFundingLocked { ref node_id, ref msg }) = msg_events.get(0) { + idx += 1; + assert_eq!(*node_id, $dst_node.node.get_our_node_id()); + Some(msg.clone()) + } else { + None + }; + + let mut revoke_and_ack = None; + let mut commitment_update = None; + let order = if let Some(ev) = msg_events.get(idx) { + idx += 1; + match ev { + &MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => { + assert_eq!(*node_id, $dst_node.node.get_our_node_id()); + revoke_and_ack = Some(msg.clone()); + RAACommitmentOrder::RevokeAndACKFirst + }, + &MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => { + assert_eq!(*node_id, $dst_node.node.get_our_node_id()); + commitment_update = Some(updates.clone()); + RAACommitmentOrder::CommitmentFirst + }, + _ => panic!("Unexpected event"), + } + } else { + RAACommitmentOrder::CommitmentFirst + }; + + if let Some(ev) = msg_events.get(idx) { + match ev { + &MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => { + assert_eq!(*node_id, $dst_node.node.get_our_node_id()); + assert!(revoke_and_ack.is_none()); + revoke_and_ack = Some(msg.clone()); + }, + &MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => { + assert_eq!(*node_id, $dst_node.node.get_our_node_id()); + assert!(commitment_update.is_none()); + commitment_update = Some(updates.clone()); + }, + _ => panic!("Unexpected event"), + } + } + + (funding_locked, revoke_and_ack, commitment_update, order) + } + } +} + +/// pending_htlc_adds includes both the holding cell and in-flight update_add_htlcs, whereas +/// for claims/fails they are separated out. +fn reconnect_nodes(node_a: &Node, node_b: &Node, send_funding_locked: (bool, bool), pending_htlc_adds: (i64, i64), pending_htlc_claims: (usize, usize), pending_cell_htlc_claims: (usize, usize), pending_cell_htlc_fails: (usize, usize), pending_raa: (bool, bool)) { + node_a.node.peer_connected(&node_b.node.get_our_node_id()); + let reestablish_1 = get_chan_reestablish_msgs!(node_a, node_b); + node_b.node.peer_connected(&node_a.node.get_our_node_id()); + let reestablish_2 = get_chan_reestablish_msgs!(node_b, node_a); + + if send_funding_locked.0 { + // If a expects a funding_locked, it better not think it has received a revoke_and_ack + // from b + for reestablish in reestablish_1.iter() { + assert_eq!(reestablish.next_remote_commitment_number, 0); + } + } + if send_funding_locked.1 { + // If b expects a funding_locked, it better not think it has received a revoke_and_ack + // from a + for reestablish in reestablish_2.iter() { + assert_eq!(reestablish.next_remote_commitment_number, 0); + } + } + if send_funding_locked.0 || send_funding_locked.1 { + // If we expect any funding_locked's, both sides better have set + // next_local_commitment_number to 1 + for reestablish in reestablish_1.iter() { + assert_eq!(reestablish.next_local_commitment_number, 1); + } + for reestablish in reestablish_2.iter() { + assert_eq!(reestablish.next_local_commitment_number, 1); + } + } + + let mut resp_1 = Vec::new(); + for msg in reestablish_1 { + node_b.node.handle_channel_reestablish(&node_a.node.get_our_node_id(), &msg).unwrap(); + resp_1.push(handle_chan_reestablish_msgs!(node_b, node_a)); + } + if pending_cell_htlc_claims.0 != 0 || pending_cell_htlc_fails.0 != 0 { + check_added_monitors!(node_b, 1); + } else { + check_added_monitors!(node_b, 0); + } + + let mut resp_2 = Vec::new(); + for msg in reestablish_2 { + node_a.node.handle_channel_reestablish(&node_b.node.get_our_node_id(), &msg).unwrap(); + resp_2.push(handle_chan_reestablish_msgs!(node_a, node_b)); + } + if pending_cell_htlc_claims.1 != 0 || pending_cell_htlc_fails.1 != 0 { + check_added_monitors!(node_a, 1); + } else { + check_added_monitors!(node_a, 0); + } + + // We dont yet support both needing updates, as that would require a different commitment dance: + assert!((pending_htlc_adds.0 == 0 && pending_htlc_claims.0 == 0 && pending_cell_htlc_claims.0 == 0 && pending_cell_htlc_fails.0 == 0) || + (pending_htlc_adds.1 == 0 && pending_htlc_claims.1 == 0 && pending_cell_htlc_claims.1 == 0 && pending_cell_htlc_fails.1 == 0)); + + for chan_msgs in resp_1.drain(..) { + if send_funding_locked.0 { + node_a.node.handle_funding_locked(&node_b.node.get_our_node_id(), &chan_msgs.0.unwrap()).unwrap(); + let announcement_event = node_a.node.get_and_clear_pending_msg_events(); + if !announcement_event.is_empty() { + assert_eq!(announcement_event.len(), 1); + if let MessageSendEvent::SendAnnouncementSignatures { .. } = announcement_event[0] { + //TODO: Test announcement_sigs re-sending + } else { panic!("Unexpected event!"); } + } + } else { + assert!(chan_msgs.0.is_none()); + } + if pending_raa.0 { + assert!(chan_msgs.3 == RAACommitmentOrder::RevokeAndACKFirst); + node_a.node.handle_revoke_and_ack(&node_b.node.get_our_node_id(), &chan_msgs.1.unwrap()).unwrap(); + assert!(node_a.node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(node_a, 1); + } else { + assert!(chan_msgs.1.is_none()); + } + if pending_htlc_adds.0 != 0 || pending_htlc_claims.0 != 0 || pending_cell_htlc_claims.0 != 0 || pending_cell_htlc_fails.0 != 0 { + let commitment_update = chan_msgs.2.unwrap(); + if pending_htlc_adds.0 != -1 { // We use -1 to denote a response commitment_signed + assert_eq!(commitment_update.update_add_htlcs.len(), pending_htlc_adds.0 as usize); + } else { + assert!(commitment_update.update_add_htlcs.is_empty()); + } + assert_eq!(commitment_update.update_fulfill_htlcs.len(), pending_htlc_claims.0 + pending_cell_htlc_claims.0); + assert_eq!(commitment_update.update_fail_htlcs.len(), pending_cell_htlc_fails.0); + assert!(commitment_update.update_fail_malformed_htlcs.is_empty()); + for update_add in commitment_update.update_add_htlcs { + node_a.node.handle_update_add_htlc(&node_b.node.get_our_node_id(), &update_add).unwrap(); + } + for update_fulfill in commitment_update.update_fulfill_htlcs { + node_a.node.handle_update_fulfill_htlc(&node_b.node.get_our_node_id(), &update_fulfill).unwrap(); + } + for update_fail in commitment_update.update_fail_htlcs { + node_a.node.handle_update_fail_htlc(&node_b.node.get_our_node_id(), &update_fail).unwrap(); + } + + if pending_htlc_adds.0 != -1 { // We use -1 to denote a response commitment_signed + commitment_signed_dance!(node_a, node_b, commitment_update.commitment_signed, false); + } else { + node_a.node.handle_commitment_signed(&node_b.node.get_our_node_id(), &commitment_update.commitment_signed).unwrap(); + check_added_monitors!(node_a, 1); + let as_revoke_and_ack = get_event_msg!(node_a, MessageSendEvent::SendRevokeAndACK, node_b.node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + node_b.node.handle_revoke_and_ack(&node_a.node.get_our_node_id(), &as_revoke_and_ack).unwrap(); + assert!(node_b.node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(node_b, 1); + } + } else { + assert!(chan_msgs.2.is_none()); + } + } + + for chan_msgs in resp_2.drain(..) { + if send_funding_locked.1 { + node_b.node.handle_funding_locked(&node_a.node.get_our_node_id(), &chan_msgs.0.unwrap()).unwrap(); + let announcement_event = node_b.node.get_and_clear_pending_msg_events(); + if !announcement_event.is_empty() { + assert_eq!(announcement_event.len(), 1); + if let MessageSendEvent::SendAnnouncementSignatures { .. } = announcement_event[0] { + //TODO: Test announcement_sigs re-sending + } else { panic!("Unexpected event!"); } + } + } else { + assert!(chan_msgs.0.is_none()); + } + if pending_raa.1 { + assert!(chan_msgs.3 == RAACommitmentOrder::RevokeAndACKFirst); + node_b.node.handle_revoke_and_ack(&node_a.node.get_our_node_id(), &chan_msgs.1.unwrap()).unwrap(); + assert!(node_b.node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(node_b, 1); + } else { + assert!(chan_msgs.1.is_none()); + } + if pending_htlc_adds.1 != 0 || pending_htlc_claims.1 != 0 || pending_cell_htlc_claims.1 != 0 || pending_cell_htlc_fails.1 != 0 { + let commitment_update = chan_msgs.2.unwrap(); + if pending_htlc_adds.1 != -1 { // We use -1 to denote a response commitment_signed + assert_eq!(commitment_update.update_add_htlcs.len(), pending_htlc_adds.1 as usize); + } + assert_eq!(commitment_update.update_fulfill_htlcs.len(), pending_htlc_claims.0 + pending_cell_htlc_claims.0); + assert_eq!(commitment_update.update_fail_htlcs.len(), pending_cell_htlc_fails.0); + assert!(commitment_update.update_fail_malformed_htlcs.is_empty()); + for update_add in commitment_update.update_add_htlcs { + node_b.node.handle_update_add_htlc(&node_a.node.get_our_node_id(), &update_add).unwrap(); + } + for update_fulfill in commitment_update.update_fulfill_htlcs { + node_b.node.handle_update_fulfill_htlc(&node_a.node.get_our_node_id(), &update_fulfill).unwrap(); + } + for update_fail in commitment_update.update_fail_htlcs { + node_b.node.handle_update_fail_htlc(&node_a.node.get_our_node_id(), &update_fail).unwrap(); + } + + if pending_htlc_adds.1 != -1 { // We use -1 to denote a response commitment_signed + commitment_signed_dance!(node_b, node_a, commitment_update.commitment_signed, false); + } else { + node_b.node.handle_commitment_signed(&node_a.node.get_our_node_id(), &commitment_update.commitment_signed).unwrap(); + check_added_monitors!(node_b, 1); + let bs_revoke_and_ack = get_event_msg!(node_b, MessageSendEvent::SendRevokeAndACK, node_a.node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + node_a.node.handle_revoke_and_ack(&node_b.node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); + assert!(node_a.node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(node_a, 1); + } + } else { + assert!(chan_msgs.2.is_none()); + } + } +} + +#[test] +fn test_simple_peer_disconnect() { + // Test that we can reconnect when there are no lost messages + let nodes = create_network(3); + create_announced_chan_between_nodes(&nodes, 0, 1); + create_announced_chan_between_nodes(&nodes, 1, 2); + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + + let payment_preimage_1 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0; + let payment_hash_2 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1; + fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_2); + claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_1); + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + + let payment_preimage_3 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0; + let payment_preimage_4 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).0; + let payment_hash_5 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1; + let payment_hash_6 = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 1000000).1; + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + + claim_payment_along_route(&nodes[0], &vec!(&nodes[1], &nodes[2]), true, payment_preimage_3); + fail_payment_along_route(&nodes[0], &[&nodes[1], &nodes[2]], true, payment_hash_5); + + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (1, 0), (1, 0), (false, false)); + { + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 2); + match events[0] { + Event::PaymentSent { payment_preimage } => { + assert_eq!(payment_preimage, payment_preimage_3); + }, + _ => panic!("Unexpected event"), + } + match events[1] { + Event::PaymentFailed { payment_hash, rejected_by_dest, .. } => { + assert_eq!(payment_hash, payment_hash_5); + assert!(rejected_by_dest); + }, + _ => panic!("Unexpected event"), + } + } + + claim_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_preimage_4); + fail_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), payment_hash_6); +} + +fn do_test_drop_messages_peer_disconnect(messages_delivered: u8) { + // Test that we can reconnect when in-flight HTLC updates get dropped + let mut nodes = create_network(2); + if messages_delivered == 0 { + create_chan_between_nodes_with_value_a(&nodes[0], &nodes[1], 100000, 10001); + // nodes[1] doesn't receive the funding_locked message (it'll be re-sent on reconnect) + } else { + create_announced_chan_between_nodes(&nodes, 0, 1); + } + + let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), Some(&nodes[0].node.list_usable_channels()), &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); + let (payment_preimage_1, payment_hash_1) = get_payment_preimage_hash!(nodes[0]); + + let payment_event = { + nodes[0].node.send_payment(route.clone(), payment_hash_1).unwrap(); + check_added_monitors!(nodes[0], 1); + + let mut events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + SendEvent::from_event(events.remove(0)) + }; + assert_eq!(nodes[1].node.get_our_node_id(), payment_event.node_id); + + if messages_delivered < 2 { + // Drop the payment_event messages, and let them get re-generated in reconnect_nodes! + } else { + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); + if messages_delivered >= 3 { + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); + check_added_monitors!(nodes[1], 1); + let (bs_revoke_and_ack, bs_commitment_signed) = get_revoke_commit_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + + if messages_delivered >= 4 { + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[0], 1); + + if messages_delivered >= 5 { + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_commitment_signed).unwrap(); + let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[0], 1); + + if messages_delivered >= 6 { + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[1], 1); + } + } + } + } + } + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + if messages_delivered < 3 { + // Even if the funding_locked messages get exchanged, as long as nothing further was + // received on either side, both sides will need to resend them. + reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 1), (0, 0), (0, 0), (0, 0), (false, false)); + } else if messages_delivered == 3 { + // nodes[0] still wants its RAA + commitment_signed + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (true, false)); + } else if messages_delivered == 4 { + // nodes[0] still wants its commitment_signed + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (-1, 0), (0, 0), (0, 0), (0, 0), (false, false)); + } else if messages_delivered == 5 { + // nodes[1] still wants its final RAA + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, true)); + } else if messages_delivered == 6 { + // Everything was delivered... + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + } + + let events_1 = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events_1.len(), 1); + match events_1[0] { + Event::PendingHTLCsForwardable { .. } => { }, + _ => panic!("Unexpected event"), + }; + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + + nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now(); + nodes[1].node.process_pending_htlc_forwards(); + + let events_2 = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events_2.len(), 1); + match events_2[0] { + Event::PaymentReceived { ref payment_hash, amt } => { + assert_eq!(payment_hash_1, *payment_hash); + assert_eq!(amt, 1000000); + }, + _ => panic!("Unexpected event"), + } + + nodes[1].node.claim_funds(payment_preimage_1); + check_added_monitors!(nodes[1], 1); + + let events_3 = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events_3.len(), 1); + let (update_fulfill_htlc, commitment_signed) = match events_3[0] { + MessageSendEvent::UpdateHTLCs { ref node_id, ref updates } => { + assert_eq!(*node_id, nodes[0].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert_eq!(updates.update_fulfill_htlcs.len(), 1); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + (updates.update_fulfill_htlcs[0].clone(), updates.commitment_signed.clone()) + }, + _ => panic!("Unexpected event"), + }; + + if messages_delivered >= 1 { + nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlc).unwrap(); + + let events_4 = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events_4.len(), 1); + match events_4[0] { + Event::PaymentSent { ref payment_preimage } => { + assert_eq!(payment_preimage_1, *payment_preimage); + }, + _ => panic!("Unexpected event"), + } + + if messages_delivered >= 2 { + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &commitment_signed).unwrap(); + check_added_monitors!(nodes[0], 1); + let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + + if messages_delivered >= 3 { + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[1], 1); + + if messages_delivered >= 4 { + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed).unwrap(); + let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[1], 1); + + if messages_delivered >= 5 { + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[0], 1); + } + } + } + } + } + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + if messages_delivered < 2 { + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (1, 0), (0, 0), (0, 0), (false, false)); + //TODO: Deduplicate PaymentSent events, then enable this if: + //if messages_delivered < 1 { + let events_4 = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events_4.len(), 1); + match events_4[0] { + Event::PaymentSent { ref payment_preimage } => { + assert_eq!(payment_preimage_1, *payment_preimage); + }, + _ => panic!("Unexpected event"), + } + //} + } else if messages_delivered == 2 { + // nodes[0] still wants its RAA + commitment_signed + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, true)); + } else if messages_delivered == 3 { + // nodes[0] still wants its commitment_signed + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, -1), (0, 0), (0, 0), (0, 0), (false, false)); + } else if messages_delivered == 4 { + // nodes[1] still wants its final RAA + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (true, false)); + } else if messages_delivered == 5 { + // Everything was delivered... + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + } + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + + // Channel should still work fine... + let payment_preimage_2 = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000).0; + claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2); +} + +#[test] +fn test_drop_messages_peer_disconnect_a() { + do_test_drop_messages_peer_disconnect(0); + do_test_drop_messages_peer_disconnect(1); + do_test_drop_messages_peer_disconnect(2); + do_test_drop_messages_peer_disconnect(3); +} + +#[test] +fn test_drop_messages_peer_disconnect_b() { + do_test_drop_messages_peer_disconnect(4); + do_test_drop_messages_peer_disconnect(5); + do_test_drop_messages_peer_disconnect(6); +} + +#[test] +fn test_funding_peer_disconnect() { + // Test that we can lock in our funding tx while disconnected + let nodes = create_network(2); + let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001); + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + + confirm_transaction(&nodes[0].chain_monitor, &tx, tx.version); + let events_1 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_1.len(), 1); + match events_1[0] { + MessageSendEvent::SendFundingLocked { ref node_id, msg: _ } => { + assert_eq!(*node_id, nodes[1].node.get_our_node_id()); + }, + _ => panic!("Unexpected event"), + } + + reconnect_nodes(&nodes[0], &nodes[1], (false, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + + confirm_transaction(&nodes[1].chain_monitor, &tx, tx.version); + let events_2 = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events_2.len(), 2); + match events_2[0] { + MessageSendEvent::SendFundingLocked { ref node_id, msg: _ } => { + assert_eq!(*node_id, nodes[0].node.get_our_node_id()); + }, + _ => panic!("Unexpected event"), + } + match events_2[1] { + MessageSendEvent::SendAnnouncementSignatures { ref node_id, msg: _ } => { + assert_eq!(*node_id, nodes[0].node.get_our_node_id()); + }, + _ => panic!("Unexpected event"), + } + + reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + + // TODO: We shouldn't need to manually pass list_usable_chanels here once we support + // rebroadcasting announcement_signatures upon reconnect. + + let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), Some(&nodes[0].node.list_usable_channels()), &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); + let (payment_preimage, _) = send_along_route(&nodes[0], route, &[&nodes[1]], 1000000); + claim_payment(&nodes[0], &[&nodes[1]], payment_preimage); +} + +#[test] +fn test_drop_messages_peer_disconnect_dual_htlc() { + // Test that we can handle reconnecting when both sides of a channel have pending + // commitment_updates when we disconnect. + let mut nodes = create_network(2); + create_announced_chan_between_nodes(&nodes, 0, 1); + + let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000); + + // Now try to send a second payment which will fail to send + let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); + let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]); + + nodes[0].node.send_payment(route.clone(), payment_hash_2).unwrap(); + check_added_monitors!(nodes[0], 1); + + let events_1 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_1.len(), 1); + match events_1[0] { + MessageSendEvent::UpdateHTLCs { .. } => {}, + _ => panic!("Unexpected event"), + } + + assert!(nodes[1].node.claim_funds(payment_preimage_1)); + check_added_monitors!(nodes[1], 1); + + let events_2 = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events_2.len(), 1); + match events_2[0] { + MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => { + assert_eq!(*node_id, nodes[0].node.get_our_node_id()); + assert!(update_add_htlcs.is_empty()); + assert_eq!(update_fulfill_htlcs.len(), 1); + assert!(update_fail_htlcs.is_empty()); + assert!(update_fail_malformed_htlcs.is_empty()); + assert!(update_fee.is_none()); + + nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlcs[0]).unwrap(); + let events_3 = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events_3.len(), 1); + match events_3[0] { + Event::PaymentSent { ref payment_preimage } => { + assert_eq!(*payment_preimage, payment_preimage_1); + }, + _ => panic!("Unexpected event"), + } + + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed).unwrap(); + let _ = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[0], 1); + }, + _ => panic!("Unexpected event"), + } + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + + nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); + let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]); + assert_eq!(reestablish_1.len(), 1); + nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); + let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]); + assert_eq!(reestablish_2.len(), 1); + + nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]).unwrap(); + let as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]); + nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]).unwrap(); + let bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]); + + assert!(as_resp.0.is_none()); + assert!(bs_resp.0.is_none()); + + assert!(bs_resp.1.is_none()); + assert!(bs_resp.2.is_none()); + + assert!(as_resp.3 == RAACommitmentOrder::CommitmentFirst); + + assert_eq!(as_resp.2.as_ref().unwrap().update_add_htlcs.len(), 1); + assert!(as_resp.2.as_ref().unwrap().update_fulfill_htlcs.is_empty()); + assert!(as_resp.2.as_ref().unwrap().update_fail_htlcs.is_empty()); + assert!(as_resp.2.as_ref().unwrap().update_fail_malformed_htlcs.is_empty()); + assert!(as_resp.2.as_ref().unwrap().update_fee.is_none()); + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().update_add_htlcs[0]).unwrap(); + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_resp.2.as_ref().unwrap().commitment_signed).unwrap(); + let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[1], 1); + + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), as_resp.1.as_ref().unwrap()).unwrap(); + let bs_second_commitment_signed = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + assert!(bs_second_commitment_signed.update_add_htlcs.is_empty()); + assert!(bs_second_commitment_signed.update_fulfill_htlcs.is_empty()); + assert!(bs_second_commitment_signed.update_fail_htlcs.is_empty()); + assert!(bs_second_commitment_signed.update_fail_malformed_htlcs.is_empty()); + assert!(bs_second_commitment_signed.update_fee.is_none()); + check_added_monitors!(nodes[1], 1); + + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); + let as_commitment_signed = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + assert!(as_commitment_signed.update_add_htlcs.is_empty()); + assert!(as_commitment_signed.update_fulfill_htlcs.is_empty()); + assert!(as_commitment_signed.update_fail_htlcs.is_empty()); + assert!(as_commitment_signed.update_fail_malformed_htlcs.is_empty()); + assert!(as_commitment_signed.update_fee.is_none()); + check_added_monitors!(nodes[0], 1); + + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment_signed.commitment_signed).unwrap(); + let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[0], 1); + + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed.commitment_signed).unwrap(); + let bs_second_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[1], 1); + + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[1], 1); + + let events_4 = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events_4.len(), 1); + match events_4[0] { + Event::PendingHTLCsForwardable { .. } => { }, + _ => panic!("Unexpected event"), + }; + + nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now(); + nodes[1].node.process_pending_htlc_forwards(); + + let events_5 = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events_5.len(), 1); + match events_5[0] { + Event::PaymentReceived { ref payment_hash, amt: _ } => { + assert_eq!(payment_hash_2, *payment_hash); + }, + _ => panic!("Unexpected event"), + } + + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke_and_ack).unwrap(); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[0], 1); + + claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2); +} + +#[test] +fn test_simple_monitor_permanent_update_fail() { + // Test that we handle a simple permanent monitor update failure + let mut nodes = create_network(2); + create_announced_chan_between_nodes(&nodes, 0, 1); + + let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); + let (_, payment_hash_1) = get_payment_preimage_hash!(nodes[0]); + + *nodes[0].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::PermanentFailure); + if let Err(APIError::ChannelUnavailable {..}) = nodes[0].node.send_payment(route, payment_hash_1) {} else { panic!(); } + check_added_monitors!(nodes[0], 1); + + let events_1 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_1.len(), 2); + match events_1[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + }; + match events_1[1] { + MessageSendEvent::HandleError { node_id, .. } => assert_eq!(node_id, nodes[1].node.get_our_node_id()), + _ => panic!("Unexpected event"), + }; + + // TODO: Once we hit the chain with the failure transaction we should check that we get a + // PaymentFailed event + + assert_eq!(nodes[0].node.list_channels().len(), 0); +} + +fn do_test_simple_monitor_temporary_update_fail(disconnect: bool) { + // Test that we can recover from a simple temporary monitor update failure optionally with + // a disconnect in between + let mut nodes = create_network(2); + create_announced_chan_between_nodes(&nodes, 0, 1); + + let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); + let (payment_preimage_1, payment_hash_1) = get_payment_preimage_hash!(nodes[0]); + + *nodes[0].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); + if let Err(APIError::MonitorUpdateFailed) = nodes[0].node.send_payment(route.clone(), payment_hash_1) {} else { panic!(); } + check_added_monitors!(nodes[0], 1); + + assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + assert_eq!(nodes[0].node.list_channels().len(), 1); + + if disconnect { + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + reconnect_nodes(&nodes[0], &nodes[1], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + } + + *nodes[0].chan_monitor.update_ret.lock().unwrap() = Ok(()); + nodes[0].node.test_restore_channel_monitor(); + check_added_monitors!(nodes[0], 1); + + let mut events_2 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_2.len(), 1); + let payment_event = SendEvent::from_event(events_2.pop().unwrap()); + assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); + commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false); + + expect_pending_htlcs_forwardable!(nodes[1]); + + let events_3 = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events_3.len(), 1); + match events_3[0] { + Event::PaymentReceived { ref payment_hash, amt } => { + assert_eq!(payment_hash_1, *payment_hash); + assert_eq!(amt, 1000000); + }, + _ => panic!("Unexpected event"), + } + + claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_1); + + // Now set it to failed again... + let (_, payment_hash_2) = get_payment_preimage_hash!(nodes[0]); + *nodes[0].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); + if let Err(APIError::MonitorUpdateFailed) = nodes[0].node.send_payment(route, payment_hash_2) {} else { panic!(); } + check_added_monitors!(nodes[0], 1); + + assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + assert_eq!(nodes[0].node.list_channels().len(), 1); + + if disconnect { + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + } + + // ...and make sure we can force-close a TemporaryFailure channel with a PermanentFailure + *nodes[0].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::PermanentFailure); + nodes[0].node.test_restore_channel_monitor(); + check_added_monitors!(nodes[0], 1); + + let events_5 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_5.len(), 1); + match events_5[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + + // TODO: Once we hit the chain with the failure transaction we should check that we get a + // PaymentFailed event + + assert_eq!(nodes[0].node.list_channels().len(), 0); +} + +#[test] +fn test_simple_monitor_temporary_update_fail() { + do_test_simple_monitor_temporary_update_fail(false); + do_test_simple_monitor_temporary_update_fail(true); +} + +fn do_test_monitor_temporary_update_fail(disconnect_count: usize) { + let disconnect_flags = 8 | 16; + + // Test that we can recover from a temporary monitor update failure with some in-flight + // HTLCs going on at the same time potentially with some disconnection thrown in. + // * First we route a payment, then get a temporary monitor update failure when trying to + // route a second payment. We then claim the first payment. + // * If disconnect_count is set, we will disconnect at this point (which is likely as + // TemporaryFailure likely indicates net disconnect which resulted in failing to update + // the ChannelMonitor on a watchtower). + // * If !(disconnect_count & 16) we deliver a update_fulfill_htlc/CS for the first payment + // immediately, otherwise we wait sconnect and deliver them via the reconnect + // channel_reestablish processing (ie disconnect_count & 16 makes no sense if + // disconnect_count & !disconnect_flags is 0). + // * We then update the channel monitor, reconnecting if disconnect_count is set and walk + // through message sending, potentially disconnect/reconnecting multiple times based on + // disconnect_count, to get the update_fulfill_htlc through. + // * We then walk through more message exchanges to get the original update_add_htlc + // through, swapping message ordering based on disconnect_count & 8 and optionally + // disconnect/reconnecting based on disconnect_count. + let mut nodes = create_network(2); + create_announced_chan_between_nodes(&nodes, 0, 1); + + let (payment_preimage_1, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000); + + // Now try to send a second payment which will fail to send + let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); + let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]); + + *nodes[0].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); + if let Err(APIError::MonitorUpdateFailed) = nodes[0].node.send_payment(route.clone(), payment_hash_2) {} else { panic!(); } + check_added_monitors!(nodes[0], 1); + + assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + assert_eq!(nodes[0].node.list_channels().len(), 1); + + // Claim the previous payment, which will result in a update_fulfill_htlc/CS from nodes[1] + // but nodes[0] won't respond since it is frozen. + assert!(nodes[1].node.claim_funds(payment_preimage_1)); + check_added_monitors!(nodes[1], 1); + let events_2 = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events_2.len(), 1); + let (bs_initial_fulfill, bs_initial_commitment_signed) = match events_2[0] { + MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => { + assert_eq!(*node_id, nodes[0].node.get_our_node_id()); + assert!(update_add_htlcs.is_empty()); + assert_eq!(update_fulfill_htlcs.len(), 1); + assert!(update_fail_htlcs.is_empty()); + assert!(update_fail_malformed_htlcs.is_empty()); + assert!(update_fee.is_none()); + + if (disconnect_count & 16) == 0 { + nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &update_fulfill_htlcs[0]).unwrap(); + let events_3 = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events_3.len(), 1); + match events_3[0] { + Event::PaymentSent { ref payment_preimage } => { + assert_eq!(*payment_preimage, payment_preimage_1); + }, + _ => panic!("Unexpected event"), + } + + if let Err(msgs::HandleError{err, action: Some(msgs::ErrorAction::IgnoreError) }) = nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed) { + assert_eq!(err, "Previous monitor update failure prevented generation of RAA"); + } else { panic!(); } + } + + (update_fulfill_htlcs[0].clone(), commitment_signed.clone()) + }, + _ => panic!("Unexpected event"), + }; + + if disconnect_count & !disconnect_flags > 0 { + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + } + + // Now fix monitor updating... + *nodes[0].chan_monitor.update_ret.lock().unwrap() = Ok(()); + nodes[0].node.test_restore_channel_monitor(); + check_added_monitors!(nodes[0], 1); + + macro_rules! disconnect_reconnect_peers { () => { { + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + + nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); + let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]); + assert_eq!(reestablish_1.len(), 1); + nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); + let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]); + assert_eq!(reestablish_2.len(), 1); + + nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]).unwrap(); + let as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]); + nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]).unwrap(); + let bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]); + + assert!(as_resp.0.is_none()); + assert!(bs_resp.0.is_none()); + + (reestablish_1, reestablish_2, as_resp, bs_resp) + } } } + + let (payment_event, initial_revoke_and_ack) = if disconnect_count & !disconnect_flags > 0 { + assert!(nodes[0].node.get_and_clear_pending_events().is_empty()); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + + nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); + let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]); + assert_eq!(reestablish_1.len(), 1); + nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); + let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]); + assert_eq!(reestablish_2.len(), 1); + + nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]).unwrap(); + check_added_monitors!(nodes[0], 0); + let mut as_resp = handle_chan_reestablish_msgs!(nodes[0], nodes[1]); + nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]).unwrap(); + check_added_monitors!(nodes[1], 0); + let mut bs_resp = handle_chan_reestablish_msgs!(nodes[1], nodes[0]); + + assert!(as_resp.0.is_none()); + assert!(bs_resp.0.is_none()); + + assert!(bs_resp.1.is_none()); + if (disconnect_count & 16) == 0 { + assert!(bs_resp.2.is_none()); + + assert!(as_resp.1.is_some()); + assert!(as_resp.2.is_some()); + assert!(as_resp.3 == RAACommitmentOrder::CommitmentFirst); + } else { + assert!(bs_resp.2.as_ref().unwrap().update_add_htlcs.is_empty()); + assert!(bs_resp.2.as_ref().unwrap().update_fail_htlcs.is_empty()); + assert!(bs_resp.2.as_ref().unwrap().update_fail_malformed_htlcs.is_empty()); + assert!(bs_resp.2.as_ref().unwrap().update_fee.is_none()); + assert!(bs_resp.2.as_ref().unwrap().update_fulfill_htlcs == vec![bs_initial_fulfill]); + assert!(bs_resp.2.as_ref().unwrap().commitment_signed == bs_initial_commitment_signed); + + assert!(as_resp.1.is_none()); + + nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &bs_resp.2.as_ref().unwrap().update_fulfill_htlcs[0]).unwrap(); + let events_3 = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events_3.len(), 1); + match events_3[0] { + Event::PaymentSent { ref payment_preimage } => { + assert_eq!(*payment_preimage, payment_preimage_1); + }, + _ => panic!("Unexpected event"), + } + + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_resp.2.as_ref().unwrap().commitment_signed).unwrap(); + let as_resp_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[0], 1); + + as_resp.1 = Some(as_resp_raa); + bs_resp.2 = None; + } + + if disconnect_count & !disconnect_flags > 1 { + let (second_reestablish_1, second_reestablish_2, second_as_resp, second_bs_resp) = disconnect_reconnect_peers!(); + + if (disconnect_count & 16) == 0 { + assert!(reestablish_1 == second_reestablish_1); + assert!(reestablish_2 == second_reestablish_2); + } + assert!(as_resp == second_as_resp); + assert!(bs_resp == second_bs_resp); + } + + (SendEvent::from_commitment_update(nodes[1].node.get_our_node_id(), as_resp.2.unwrap()), as_resp.1.unwrap()) + } else { + let mut events_4 = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events_4.len(), 2); + (SendEvent::from_event(events_4.remove(0)), match events_4[0] { + MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => { + assert_eq!(*node_id, nodes[1].node.get_our_node_id()); + msg.clone() + }, + _ => panic!("Unexpected event"), + }) + }; + + assert_eq!(payment_event.node_id, nodes[1].node.get_our_node_id()); + + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]).unwrap(); + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &payment_event.commitment_msg).unwrap(); + let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); + // nodes[1] is awaiting an RAA from nodes[0] still so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[1], 1); + + if disconnect_count & !disconnect_flags > 2 { + let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!(); + + assert!(as_resp.1.unwrap() == initial_revoke_and_ack); + assert!(bs_resp.1.unwrap() == bs_revoke_and_ack); + + assert!(as_resp.2.is_none()); + assert!(bs_resp.2.is_none()); + } + + let as_commitment_update; + let bs_second_commitment_update; + + macro_rules! handle_bs_raa { () => { + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); + as_commitment_update = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + assert!(as_commitment_update.update_add_htlcs.is_empty()); + assert!(as_commitment_update.update_fulfill_htlcs.is_empty()); + assert!(as_commitment_update.update_fail_htlcs.is_empty()); + assert!(as_commitment_update.update_fail_malformed_htlcs.is_empty()); + assert!(as_commitment_update.update_fee.is_none()); + check_added_monitors!(nodes[0], 1); + } } + + macro_rules! handle_initial_raa { () => { + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &initial_revoke_and_ack).unwrap(); + bs_second_commitment_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + assert!(bs_second_commitment_update.update_add_htlcs.is_empty()); + assert!(bs_second_commitment_update.update_fulfill_htlcs.is_empty()); + assert!(bs_second_commitment_update.update_fail_htlcs.is_empty()); + assert!(bs_second_commitment_update.update_fail_malformed_htlcs.is_empty()); + assert!(bs_second_commitment_update.update_fee.is_none()); + check_added_monitors!(nodes[1], 1); + } } + + if (disconnect_count & 8) == 0 { + handle_bs_raa!(); + + if disconnect_count & !disconnect_flags > 3 { + let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!(); + + assert!(as_resp.1.unwrap() == initial_revoke_and_ack); + assert!(bs_resp.1.is_none()); + + assert!(as_resp.2.unwrap() == as_commitment_update); + assert!(bs_resp.2.is_none()); + + assert!(as_resp.3 == RAACommitmentOrder::RevokeAndACKFirst); + } + + handle_initial_raa!(); + + if disconnect_count & !disconnect_flags > 4 { + let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!(); + + assert!(as_resp.1.is_none()); + assert!(bs_resp.1.is_none()); + + assert!(as_resp.2.unwrap() == as_commitment_update); + assert!(bs_resp.2.unwrap() == bs_second_commitment_update); + } + } else { + handle_initial_raa!(); + + if disconnect_count & !disconnect_flags > 3 { + let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!(); + + assert!(as_resp.1.is_none()); + assert!(bs_resp.1.unwrap() == bs_revoke_and_ack); + + assert!(as_resp.2.is_none()); + assert!(bs_resp.2.unwrap() == bs_second_commitment_update); + + assert!(bs_resp.3 == RAACommitmentOrder::RevokeAndACKFirst); + } + + handle_bs_raa!(); + + if disconnect_count & !disconnect_flags > 4 { + let (_, _, as_resp, bs_resp) = disconnect_reconnect_peers!(); + + assert!(as_resp.1.is_none()); + assert!(bs_resp.1.is_none()); + + assert!(as_resp.2.unwrap() == as_commitment_update); + assert!(bs_resp.2.unwrap() == bs_second_commitment_update); + } + } + + nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &bs_second_commitment_update.commitment_signed).unwrap(); + let as_revoke_and_ack = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[0], 1); + + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_update.commitment_signed).unwrap(); + let bs_second_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id()); + // No commitment_signed so get_event_msg's assert(len == 1) passes + check_added_monitors!(nodes[1], 1); + + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap(); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[1], 1); + + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_second_revoke_and_ack).unwrap(); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[0], 1); + + expect_pending_htlcs_forwardable!(nodes[1]); + + let events_5 = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events_5.len(), 1); + match events_5[0] { + Event::PaymentReceived { ref payment_hash, amt } => { + assert_eq!(payment_hash_2, *payment_hash); + assert_eq!(amt, 1000000); + }, + _ => panic!("Unexpected event"), + } + + claim_payment(&nodes[0], &[&nodes[1]], payment_preimage_2); +} + +#[test] +fn test_monitor_temporary_update_fail_a() { + do_test_monitor_temporary_update_fail(0); + do_test_monitor_temporary_update_fail(1); + do_test_monitor_temporary_update_fail(2); + do_test_monitor_temporary_update_fail(3); + do_test_monitor_temporary_update_fail(4); + do_test_monitor_temporary_update_fail(5); +} + +#[test] +fn test_monitor_temporary_update_fail_b() { + do_test_monitor_temporary_update_fail(2 | 8); + do_test_monitor_temporary_update_fail(3 | 8); + do_test_monitor_temporary_update_fail(4 | 8); + do_test_monitor_temporary_update_fail(5 | 8); +} + +#[test] +fn test_monitor_temporary_update_fail_c() { + do_test_monitor_temporary_update_fail(1 | 16); + do_test_monitor_temporary_update_fail(2 | 16); + do_test_monitor_temporary_update_fail(3 | 16); + do_test_monitor_temporary_update_fail(2 | 8 | 16); + do_test_monitor_temporary_update_fail(3 | 8 | 16); +} + +#[test] +fn test_monitor_update_fail_cs() { + // Tests handling of a monitor update failure when processing an incoming commitment_signed + let mut nodes = create_network(2); + create_announced_chan_between_nodes(&nodes, 0, 1); + + let route = nodes[0].router.get_route(&nodes[1].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); + let (payment_preimage, our_payment_hash) = get_payment_preimage_hash!(nodes[0]); + nodes[0].node.send_payment(route, our_payment_hash).unwrap(); + check_added_monitors!(nodes[0], 1); + + let send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0)); + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]).unwrap(); + + *nodes[1].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); + if let msgs::HandleError { err, action: Some(msgs::ErrorAction::IgnoreError) } = nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &send_event.commitment_msg).unwrap_err() { + assert_eq!(err, "Failed to update ChannelMonitor"); + } else { panic!(); } + check_added_monitors!(nodes[1], 1); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + + *nodes[1].chan_monitor.update_ret.lock().unwrap() = Ok(()); + nodes[1].node.test_restore_channel_monitor(); + check_added_monitors!(nodes[1], 1); + let responses = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(responses.len(), 2); + + match responses[0] { + MessageSendEvent::SendRevokeAndACK { ref msg, ref node_id } => { + assert_eq!(*node_id, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &msg).unwrap(); + check_added_monitors!(nodes[0], 1); + }, + _ => panic!("Unexpected event"), + } + match responses[1] { + MessageSendEvent::UpdateHTLCs { ref updates, ref node_id } => { + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fulfill_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + assert_eq!(*node_id, nodes[0].node.get_our_node_id()); + + *nodes[0].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); + if let msgs::HandleError { err, action: Some(msgs::ErrorAction::IgnoreError) } = nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &updates.commitment_signed).unwrap_err() { + assert_eq!(err, "Failed to update ChannelMonitor"); + } else { panic!(); } + check_added_monitors!(nodes[0], 1); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + }, + _ => panic!("Unexpected event"), + } + + *nodes[0].chan_monitor.update_ret.lock().unwrap() = Ok(()); + nodes[0].node.test_restore_channel_monitor(); + check_added_monitors!(nodes[0], 1); + + let final_raa = get_event_msg!(nodes[0], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &final_raa).unwrap(); + check_added_monitors!(nodes[1], 1); + + let mut events = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PendingHTLCsForwardable { .. } => { }, + _ => panic!("Unexpected event"), + }; + nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now(); + nodes[1].node.process_pending_htlc_forwards(); + + events = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentReceived { payment_hash, amt } => { + assert_eq!(payment_hash, our_payment_hash); + assert_eq!(amt, 1000000); + }, + _ => panic!("Unexpected event"), + }; + + claim_payment(&nodes[0], &[&nodes[1]], payment_preimage); +} + +fn do_test_monitor_update_fail_raa(test_ignore_second_cs: bool) { + // Tests handling of a monitor update failure when processing an incoming RAA + let mut nodes = create_network(3); + create_announced_chan_between_nodes(&nodes, 0, 1); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); + + // Rebalance a bit so that we can send backwards from 2 to 1. + send_payment(&nodes[0], &[&nodes[1], &nodes[2]], 5000000); + + // Route a first payment that we'll fail backwards + let (_, payment_hash_1) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000); + + // Fail the payment backwards, failing the monitor update on nodes[1]'s receipt of the RAA + assert!(nodes[2].node.fail_htlc_backwards(&payment_hash_1, 0)); + check_added_monitors!(nodes[2], 1); + + let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fulfill_htlcs.is_empty()); + assert_eq!(updates.update_fail_htlcs.len(), 1); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap(); + + let bs_revoke_and_ack = commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false, true, false, true); + check_added_monitors!(nodes[0], 0); + + // While the second channel is AwaitingRAA, forward a second payment to get it into the + // holding cell. + let (payment_preimage_2, payment_hash_2) = get_payment_preimage_hash!(nodes[0]); + let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); + nodes[0].node.send_payment(route, payment_hash_2).unwrap(); + check_added_monitors!(nodes[0], 1); + + let mut send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0)); + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]).unwrap(); + commitment_signed_dance!(nodes[1], nodes[0], send_event.commitment_msg, false); + + let events_1 = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events_1.len(), 1); + match events_1[0] { + Event::PendingHTLCsForwardable { .. } => { }, + _ => panic!("Unexpected event"), + }; + + nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now(); + nodes[1].node.process_pending_htlc_forwards(); + check_added_monitors!(nodes[1], 0); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + + // Now fail monitor updating. + *nodes[1].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); + if let msgs::HandleError { err, action: Some(msgs::ErrorAction::IgnoreError) } = nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack).unwrap_err() { + assert_eq!(err, "Failed to update ChannelMonitor"); + } else { panic!(); } + assert!(nodes[1].node.get_and_clear_pending_events().is_empty()); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + check_added_monitors!(nodes[1], 1); + + // Attempt to forward a third payment but fail due to the second channel being unavailable + // for forwarding. + + let (_, payment_hash_3) = get_payment_preimage_hash!(nodes[0]); + let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); + nodes[0].node.send_payment(route, payment_hash_3).unwrap(); + check_added_monitors!(nodes[0], 1); + + *nodes[1].chan_monitor.update_ret.lock().unwrap() = Ok(()); // We succeed in updating the monitor for the first channel + send_event = SendEvent::from_event(nodes[0].node.get_and_clear_pending_msg_events().remove(0)); + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]).unwrap(); + commitment_signed_dance!(nodes[1], nodes[0], send_event.commitment_msg, false, true); + check_added_monitors!(nodes[1], 0); + + let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events_2.len(), 1); + match events_2.remove(0) { + MessageSendEvent::UpdateHTLCs { node_id, updates } => { + assert_eq!(node_id, nodes[0].node.get_our_node_id()); + assert!(updates.update_fulfill_htlcs.is_empty()); + assert_eq!(updates.update_fail_htlcs.len(), 1); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + + nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap(); + commitment_signed_dance!(nodes[0], nodes[1], updates.commitment_signed, false, true); + + let msg_events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(msg_events.len(), 1); + match msg_events[0] { + MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => { + assert_eq!(msg.contents.short_channel_id, chan_2.0.contents.short_channel_id); + assert_eq!(msg.contents.flags & 2, 2); // temp disabled + }, + _ => panic!("Unexpected event"), + } + + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + if let Event::PaymentFailed { payment_hash, rejected_by_dest, .. } = events[0] { + assert_eq!(payment_hash, payment_hash_3); + assert!(!rejected_by_dest); + } else { panic!("Unexpected event!"); } + }, + _ => panic!("Unexpected event type!"), + }; + + let (payment_preimage_4, payment_hash_4) = if test_ignore_second_cs { + // Try to route another payment backwards from 2 to make sure 1 holds off on responding + let (payment_preimage_4, payment_hash_4) = get_payment_preimage_hash!(nodes[0]); + let route = nodes[2].router.get_route(&nodes[0].node.get_our_node_id(), None, &Vec::new(), 1000000, TEST_FINAL_CLTV).unwrap(); + nodes[2].node.send_payment(route, payment_hash_4).unwrap(); + check_added_monitors!(nodes[2], 1); + + send_event = SendEvent::from_event(nodes[2].node.get_and_clear_pending_msg_events().remove(0)); + nodes[1].node.handle_update_add_htlc(&nodes[2].node.get_our_node_id(), &send_event.msgs[0]).unwrap(); + if let Err(msgs::HandleError{err, action: Some(msgs::ErrorAction::IgnoreError) }) = nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &send_event.commitment_msg) { + assert_eq!(err, "Previous monitor update failure prevented generation of RAA"); + } else { panic!(); } + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + assert!(nodes[1].node.get_and_clear_pending_events().is_empty()); + (Some(payment_preimage_4), Some(payment_hash_4)) + } else { (None, None) }; + + // Restore monitor updating, ensuring we immediately get a fail-back update and a + // update_add update. + *nodes[1].chan_monitor.update_ret.lock().unwrap() = Ok(()); + nodes[1].node.test_restore_channel_monitor(); + check_added_monitors!(nodes[1], 2); + + let mut events_3 = nodes[1].node.get_and_clear_pending_msg_events(); + if test_ignore_second_cs { + assert_eq!(events_3.len(), 3); + } else { + assert_eq!(events_3.len(), 2); + } + + // Note that the ordering of the events for different nodes is non-prescriptive, though the + // ordering of the two events that both go to nodes[2] have to stay in the same order. + let messages_a = match events_3.pop().unwrap() { + MessageSendEvent::UpdateHTLCs { node_id, mut updates } => { + assert_eq!(node_id, nodes[0].node.get_our_node_id()); + assert!(updates.update_fulfill_htlcs.is_empty()); + assert_eq!(updates.update_fail_htlcs.len(), 1); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + (updates.update_fail_htlcs.remove(0), updates.commitment_signed) + }, + _ => panic!("Unexpected event type!"), + }; + let raa = if test_ignore_second_cs { + match events_3.remove(1) { + MessageSendEvent::SendRevokeAndACK { node_id, msg } => { + assert_eq!(node_id, nodes[2].node.get_our_node_id()); + Some(msg.clone()) + }, + _ => panic!("Unexpected event"), + } + } else { None }; + let send_event_b = SendEvent::from_event(events_3.remove(0)); + assert_eq!(send_event_b.node_id, nodes[2].node.get_our_node_id()); + + // Now deliver the new messages... + + nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &messages_a.0).unwrap(); + commitment_signed_dance!(nodes[0], nodes[1], messages_a.1, false); + let events_4 = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events_4.len(), 1); + if let Event::PaymentFailed { payment_hash, rejected_by_dest, .. } = events_4[0] { + assert_eq!(payment_hash, payment_hash_1); + assert!(rejected_by_dest); + } else { panic!("Unexpected event!"); } + + nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_event_b.msgs[0]).unwrap(); + if test_ignore_second_cs { + nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &send_event_b.commitment_msg).unwrap(); + check_added_monitors!(nodes[2], 1); + let bs_revoke_and_ack = get_event_msg!(nodes[2], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &raa.unwrap()).unwrap(); + check_added_monitors!(nodes[2], 1); + let bs_cs = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + assert!(bs_cs.update_add_htlcs.is_empty()); + assert!(bs_cs.update_fail_htlcs.is_empty()); + assert!(bs_cs.update_fail_malformed_htlcs.is_empty()); + assert!(bs_cs.update_fulfill_htlcs.is_empty()); + assert!(bs_cs.update_fee.is_none()); + + nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_revoke_and_ack).unwrap(); + check_added_monitors!(nodes[1], 1); + let as_cs = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id()); + assert!(as_cs.update_add_htlcs.is_empty()); + assert!(as_cs.update_fail_htlcs.is_empty()); + assert!(as_cs.update_fail_malformed_htlcs.is_empty()); + assert!(as_cs.update_fulfill_htlcs.is_empty()); + assert!(as_cs.update_fee.is_none()); + + nodes[1].node.handle_commitment_signed(&nodes[2].node.get_our_node_id(), &bs_cs.commitment_signed).unwrap(); + check_added_monitors!(nodes[1], 1); + let as_raa = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[2].node.get_our_node_id()); + + nodes[2].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), &as_cs.commitment_signed).unwrap(); + check_added_monitors!(nodes[2], 1); + let bs_second_raa = get_event_msg!(nodes[2], MessageSendEvent::SendRevokeAndACK, nodes[1].node.get_our_node_id()); + + nodes[2].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &as_raa).unwrap(); + check_added_monitors!(nodes[2], 1); + assert!(nodes[2].node.get_and_clear_pending_msg_events().is_empty()); + + nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_second_raa).unwrap(); + check_added_monitors!(nodes[1], 1); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + } else { + commitment_signed_dance!(nodes[2], nodes[1], send_event_b.commitment_msg, false); + } + + let events_5 = nodes[2].node.get_and_clear_pending_events(); + assert_eq!(events_5.len(), 1); + match events_5[0] { + Event::PendingHTLCsForwardable { .. } => { }, + _ => panic!("Unexpected event"), + }; + + nodes[2].node.channel_state.lock().unwrap().next_forward = Instant::now(); + nodes[2].node.process_pending_htlc_forwards(); + + let events_6 = nodes[2].node.get_and_clear_pending_events(); + assert_eq!(events_6.len(), 1); + match events_6[0] { + Event::PaymentReceived { payment_hash, .. } => { assert_eq!(payment_hash, payment_hash_2); }, + _ => panic!("Unexpected event"), + }; + + if test_ignore_second_cs { + let events_7 = nodes[1].node.get_and_clear_pending_events(); + assert_eq!(events_7.len(), 1); + match events_7[0] { + Event::PendingHTLCsForwardable { .. } => { }, + _ => panic!("Unexpected event"), + }; + + nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now(); + nodes[1].node.process_pending_htlc_forwards(); + check_added_monitors!(nodes[1], 1); + + send_event = SendEvent::from_node(&nodes[1]); + assert_eq!(send_event.node_id, nodes[0].node.get_our_node_id()); + assert_eq!(send_event.msgs.len(), 1); + nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_event.msgs[0]).unwrap(); + commitment_signed_dance!(nodes[0], nodes[1], send_event.commitment_msg, false); + + let events_8 = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events_8.len(), 1); + match events_8[0] { + Event::PendingHTLCsForwardable { .. } => { }, + _ => panic!("Unexpected event"), + }; + + nodes[0].node.channel_state.lock().unwrap().next_forward = Instant::now(); + nodes[0].node.process_pending_htlc_forwards(); + + let events_9 = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events_9.len(), 1); + match events_9[0] { + Event::PaymentReceived { payment_hash, .. } => assert_eq!(payment_hash, payment_hash_4.unwrap()), + _ => panic!("Unexpected event"), + }; + claim_payment(&nodes[2], &[&nodes[1], &nodes[0]], payment_preimage_4.unwrap()); + } + + claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage_2); +} + +#[test] +fn test_monitor_update_fail_raa() { + do_test_monitor_update_fail_raa(false); + do_test_monitor_update_fail_raa(true); +} + +#[test] +fn test_monitor_update_fail_reestablish() { + // Simple test for message retransmission after monitor update failure on + // channel_reestablish generating a monitor update (which comes from freeing holding cell + // HTLCs). + let mut nodes = create_network(3); + create_announced_chan_between_nodes(&nodes, 0, 1); + create_announced_chan_between_nodes(&nodes, 1, 2); + + let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 1000000); + + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + + assert!(nodes[2].node.claim_funds(our_payment_preimage)); + check_added_monitors!(nodes[2], 1); + let mut updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + assert_eq!(updates.update_fulfill_htlcs.len(), 1); + nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap(); + check_added_monitors!(nodes[1], 1); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false); + + *nodes[1].chan_monitor.update_ret.lock().unwrap() = Err(ChannelMonitorUpdateErr::TemporaryFailure); + nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); + nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); + + let as_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id()); + let bs_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()); + + nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish).unwrap(); + + if let msgs::HandleError { err, action: Some(msgs::ErrorAction::IgnoreError) } = nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &as_reestablish).unwrap_err() { + assert_eq!(err, "Failed to update ChannelMonitor"); + } else { panic!(); } + check_added_monitors!(nodes[1], 1); + + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + + nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); + nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); + + assert!(as_reestablish == get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id())); + assert!(bs_reestablish == get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id())); + + nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &bs_reestablish).unwrap(); + + nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &as_reestablish).unwrap(); + check_added_monitors!(nodes[1], 0); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + + *nodes[1].chan_monitor.update_ret.lock().unwrap() = Ok(()); + nodes[1].node.test_restore_channel_monitor(); + check_added_monitors!(nodes[1], 1); + + updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + assert_eq!(updates.update_fulfill_htlcs.len(), 1); + nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap(); + commitment_signed_dance!(nodes[0], nodes[1], updates.commitment_signed, false); + + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentSent { payment_preimage, .. } => assert_eq!(payment_preimage, our_payment_preimage), + _ => panic!("Unexpected event"), + } +} + +#[test] +fn test_invalid_channel_announcement() { + //Test BOLT 7 channel_announcement msg requirement for final node, gather data to build customed channel_announcement msgs + let secp_ctx = Secp256k1::new(); + let nodes = create_network(2); + + let chan_announcement = create_chan_between_nodes(&nodes[0], &nodes[1]); + + let a_channel_lock = nodes[0].node.channel_state.lock().unwrap(); + let b_channel_lock = nodes[1].node.channel_state.lock().unwrap(); + let as_chan = a_channel_lock.by_id.get(&chan_announcement.3).unwrap(); + let bs_chan = b_channel_lock.by_id.get(&chan_announcement.3).unwrap(); + + let _ = nodes[0].router.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id : as_chan.get_short_channel_id().unwrap(), is_permanent: false } ); + + let as_bitcoin_key = PublicKey::from_secret_key(&secp_ctx, &as_chan.get_local_keys().funding_key); + let bs_bitcoin_key = PublicKey::from_secret_key(&secp_ctx, &bs_chan.get_local_keys().funding_key); + + let as_network_key = nodes[0].node.get_our_node_id(); + let bs_network_key = nodes[1].node.get_our_node_id(); + + let were_node_one = as_bitcoin_key.serialize()[..] < bs_bitcoin_key.serialize()[..]; + + let mut chan_announcement; + + macro_rules! dummy_unsigned_msg { + () => { + msgs::UnsignedChannelAnnouncement { + features: msgs::GlobalFeatures::new(), + chain_hash: genesis_block(Network::Testnet).header.bitcoin_hash(), + short_channel_id: as_chan.get_short_channel_id().unwrap(), + node_id_1: if were_node_one { as_network_key } else { bs_network_key }, + node_id_2: if were_node_one { bs_network_key } else { as_network_key }, + bitcoin_key_1: if were_node_one { as_bitcoin_key } else { bs_bitcoin_key }, + bitcoin_key_2: if were_node_one { bs_bitcoin_key } else { as_bitcoin_key }, + excess_data: Vec::new(), + }; + } + } + + macro_rules! sign_msg { + ($unsigned_msg: expr) => { + let msghash = Message::from_slice(&Sha256dHash::from_data(&$unsigned_msg.encode()[..])[..]).unwrap(); + let as_bitcoin_sig = secp_ctx.sign(&msghash, &as_chan.get_local_keys().funding_key); + let bs_bitcoin_sig = secp_ctx.sign(&msghash, &bs_chan.get_local_keys().funding_key); + let as_node_sig = secp_ctx.sign(&msghash, &nodes[0].keys_manager.get_node_secret()); + let bs_node_sig = secp_ctx.sign(&msghash, &nodes[1].keys_manager.get_node_secret()); + chan_announcement = msgs::ChannelAnnouncement { + node_signature_1 : if were_node_one { as_node_sig } else { bs_node_sig}, + node_signature_2 : if were_node_one { bs_node_sig } else { as_node_sig}, + bitcoin_signature_1: if were_node_one { as_bitcoin_sig } else { bs_bitcoin_sig }, + bitcoin_signature_2 : if were_node_one { bs_bitcoin_sig } else { as_bitcoin_sig }, + contents: $unsigned_msg + } + } + } + + let unsigned_msg = dummy_unsigned_msg!(); + sign_msg!(unsigned_msg); + assert_eq!(nodes[0].router.handle_channel_announcement(&chan_announcement).unwrap(), true); + let _ = nodes[0].router.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id : as_chan.get_short_channel_id().unwrap(), is_permanent: false } ); + + // Configured with Network::Testnet + let mut unsigned_msg = dummy_unsigned_msg!(); + unsigned_msg.chain_hash = genesis_block(Network::Bitcoin).header.bitcoin_hash(); + sign_msg!(unsigned_msg); + assert!(nodes[0].router.handle_channel_announcement(&chan_announcement).is_err()); + + let mut unsigned_msg = dummy_unsigned_msg!(); + unsigned_msg.chain_hash = Sha256dHash::from_data(&[1,2,3,4,5,6,7,8,9]); + sign_msg!(unsigned_msg); + assert!(nodes[0].router.handle_channel_announcement(&chan_announcement).is_err()); +} + +struct VecWriter(Vec); +impl Writer for VecWriter { + fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> { + self.0.extend_from_slice(buf); + Ok(()) + } + fn size_hint(&mut self, size: usize) { + self.0.reserve_exact(size); + } +} + +#[test] +fn test_no_txn_manager_serialize_deserialize() { + let mut nodes = create_network(2); + + let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 100000, 10001); + + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + + let nodes_0_serialized = nodes[0].node.encode(); + let mut chan_0_monitor_serialized = VecWriter(Vec::new()); + nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap(); + + nodes[0].chan_monitor = Arc::new(test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), Arc::new(test_utils::TestLogger::new()))); + let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..]; + let (_, chan_0_monitor) = <(Sha256dHash, ChannelMonitor)>::read(&mut chan_0_monitor_read, Arc::new(test_utils::TestLogger::new())).unwrap(); + assert!(chan_0_monitor_read.is_empty()); + + let mut nodes_0_read = &nodes_0_serialized[..]; + let config = UserConfig::new(); + let keys_manager = Arc::new(keysinterface::KeysManager::new(&nodes[0].node_seed, Network::Testnet, Arc::new(test_utils::TestLogger::new()))); + let (_, nodes_0_deserialized) = { + let mut channel_monitors = HashMap::new(); + channel_monitors.insert(chan_0_monitor.get_funding_txo().unwrap(), &chan_0_monitor); + <(Sha256dHash, ChannelManager)>::read(&mut nodes_0_read, ChannelManagerReadArgs { + default_config: config, + keys_manager, + fee_estimator: Arc::new(test_utils::TestFeeEstimator { sat_per_kw: 253 }), + monitor: nodes[0].chan_monitor.clone(), + chain_monitor: nodes[0].chain_monitor.clone(), + tx_broadcaster: nodes[0].tx_broadcaster.clone(), + logger: Arc::new(test_utils::TestLogger::new()), + channel_monitors: &channel_monitors, + }).unwrap() + }; + assert!(nodes_0_read.is_empty()); + + assert!(nodes[0].chan_monitor.add_update_monitor(chan_0_monitor.get_funding_txo().unwrap(), chan_0_monitor).is_ok()); + nodes[0].node = Arc::new(nodes_0_deserialized); + let nodes_0_as_listener: Arc = nodes[0].node.clone(); + nodes[0].chain_monitor.register_listener(Arc::downgrade(&nodes_0_as_listener)); + assert_eq!(nodes[0].node.list_channels().len(), 1); + check_added_monitors!(nodes[0], 1); + + nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id()); + let reestablish_1 = get_chan_reestablish_msgs!(nodes[0], nodes[1]); + nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id()); + let reestablish_2 = get_chan_reestablish_msgs!(nodes[1], nodes[0]); + + nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &reestablish_1[0]).unwrap(); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &reestablish_2[0]).unwrap(); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + + let (funding_locked, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx); + let (announcement, as_update, bs_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &funding_locked); + for node in nodes.iter() { + assert!(node.router.handle_channel_announcement(&announcement).unwrap()); + node.router.handle_channel_update(&as_update).unwrap(); + node.router.handle_channel_update(&bs_update).unwrap(); + } + + send_payment(&nodes[0], &[&nodes[1]], 1000000); +} + +#[test] +fn test_simple_manager_serialize_deserialize() { + let mut nodes = create_network(2); + create_announced_chan_between_nodes(&nodes, 0, 1); + + let (our_payment_preimage, _) = route_payment(&nodes[0], &[&nodes[1]], 1000000); + let (_, our_payment_hash) = route_payment(&nodes[0], &[&nodes[1]], 1000000); + + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + + let nodes_0_serialized = nodes[0].node.encode(); + let mut chan_0_monitor_serialized = VecWriter(Vec::new()); + nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter().next().unwrap().1.write_for_disk(&mut chan_0_monitor_serialized).unwrap(); + + nodes[0].chan_monitor = Arc::new(test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), Arc::new(test_utils::TestLogger::new()))); + let mut chan_0_monitor_read = &chan_0_monitor_serialized.0[..]; + let (_, chan_0_monitor) = <(Sha256dHash, ChannelMonitor)>::read(&mut chan_0_monitor_read, Arc::new(test_utils::TestLogger::new())).unwrap(); + assert!(chan_0_monitor_read.is_empty()); + + let mut nodes_0_read = &nodes_0_serialized[..]; + let keys_manager = Arc::new(keysinterface::KeysManager::new(&nodes[0].node_seed, Network::Testnet, Arc::new(test_utils::TestLogger::new()))); + let (_, nodes_0_deserialized) = { + let mut channel_monitors = HashMap::new(); + channel_monitors.insert(chan_0_monitor.get_funding_txo().unwrap(), &chan_0_monitor); + <(Sha256dHash, ChannelManager)>::read(&mut nodes_0_read, ChannelManagerReadArgs { + default_config: UserConfig::new(), + keys_manager, + fee_estimator: Arc::new(test_utils::TestFeeEstimator { sat_per_kw: 253 }), + monitor: nodes[0].chan_monitor.clone(), + chain_monitor: nodes[0].chain_monitor.clone(), + tx_broadcaster: nodes[0].tx_broadcaster.clone(), + logger: Arc::new(test_utils::TestLogger::new()), + channel_monitors: &channel_monitors, + }).unwrap() + }; + assert!(nodes_0_read.is_empty()); + + assert!(nodes[0].chan_monitor.add_update_monitor(chan_0_monitor.get_funding_txo().unwrap(), chan_0_monitor).is_ok()); + nodes[0].node = Arc::new(nodes_0_deserialized); + check_added_monitors!(nodes[0], 1); + + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + + fail_payment(&nodes[0], &[&nodes[1]], our_payment_hash); + claim_payment(&nodes[0], &[&nodes[1]], our_payment_preimage); +} + +#[test] +fn test_manager_serialize_deserialize_inconsistent_monitor() { + // Test deserializing a ChannelManager with a out-of-date ChannelMonitor + let mut nodes = create_network(4); + create_announced_chan_between_nodes(&nodes, 0, 1); + create_announced_chan_between_nodes(&nodes, 2, 0); + let (_, _, channel_id, funding_tx) = create_announced_chan_between_nodes(&nodes, 0, 3); + + let (our_payment_preimage, _) = route_payment(&nodes[2], &[&nodes[0], &nodes[1]], 1000000); + + // Serialize the ChannelManager here, but the monitor we keep up-to-date + let nodes_0_serialized = nodes[0].node.encode(); + + route_payment(&nodes[0], &[&nodes[3]], 1000000); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + nodes[2].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + nodes[3].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + + // Now the ChannelMonitor (which is now out-of-sync with ChannelManager for channel w/ + // nodes[3]) + let mut node_0_monitors_serialized = Vec::new(); + for monitor in nodes[0].chan_monitor.simple_monitor.monitors.lock().unwrap().iter() { + let mut writer = VecWriter(Vec::new()); + monitor.1.write_for_disk(&mut writer).unwrap(); + node_0_monitors_serialized.push(writer.0); + } + + nodes[0].chan_monitor = Arc::new(test_utils::TestChannelMonitor::new(nodes[0].chain_monitor.clone(), nodes[0].tx_broadcaster.clone(), Arc::new(test_utils::TestLogger::new()))); + let mut node_0_monitors = Vec::new(); + for serialized in node_0_monitors_serialized.iter() { + let mut read = &serialized[..]; + let (_, monitor) = <(Sha256dHash, ChannelMonitor)>::read(&mut read, Arc::new(test_utils::TestLogger::new())).unwrap(); + assert!(read.is_empty()); + node_0_monitors.push(monitor); + } + + let mut nodes_0_read = &nodes_0_serialized[..]; + let keys_manager = Arc::new(keysinterface::KeysManager::new(&nodes[0].node_seed, Network::Testnet, Arc::new(test_utils::TestLogger::new()))); + let (_, nodes_0_deserialized) = <(Sha256dHash, ChannelManager)>::read(&mut nodes_0_read, ChannelManagerReadArgs { + default_config: UserConfig::new(), + keys_manager, + fee_estimator: Arc::new(test_utils::TestFeeEstimator { sat_per_kw: 253 }), + monitor: nodes[0].chan_monitor.clone(), + chain_monitor: nodes[0].chain_monitor.clone(), + tx_broadcaster: nodes[0].tx_broadcaster.clone(), + logger: Arc::new(test_utils::TestLogger::new()), + channel_monitors: &node_0_monitors.iter().map(|monitor| { (monitor.get_funding_txo().unwrap(), monitor) }).collect(), + }).unwrap(); + assert!(nodes_0_read.is_empty()); + + { // Channel close should result in a commitment tx and an HTLC tx + let txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(txn.len(), 2); + assert_eq!(txn[0].input[0].previous_output.txid, funding_tx.txid()); + assert_eq!(txn[1].input[0].previous_output.txid, txn[0].txid()); + } + + for monitor in node_0_monitors.drain(..) { + assert!(nodes[0].chan_monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor).is_ok()); + check_added_monitors!(nodes[0], 1); + } + nodes[0].node = Arc::new(nodes_0_deserialized); + + // nodes[1] and nodes[2] have no lost state with nodes[0]... + reconnect_nodes(&nodes[0], &nodes[1], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + reconnect_nodes(&nodes[0], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + //... and we can even still claim the payment! + claim_payment(&nodes[2], &[&nodes[0], &nodes[1]], our_payment_preimage); + + nodes[3].node.peer_connected(&nodes[0].node.get_our_node_id()); + let reestablish = get_event_msg!(nodes[3], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()); + nodes[0].node.peer_connected(&nodes[3].node.get_our_node_id()); + if let Err(msgs::HandleError { action: Some(msgs::ErrorAction::SendErrorMessage { msg }), .. }) = nodes[0].node.handle_channel_reestablish(&nodes[3].node.get_our_node_id(), &reestablish) { + assert_eq!(msg.channel_id, channel_id); + } else { panic!("Unexpected result"); } +} + +macro_rules! check_spendable_outputs { + ($node: expr, $der_idx: expr) => { + { + let events = $node.chan_monitor.simple_monitor.get_and_clear_pending_events(); + let mut txn = Vec::new(); + for event in events { + match event { + Event::SpendableOutputs { ref outputs } => { + for outp in outputs { + match *outp { + SpendableOutputDescriptor::DynamicOutputP2WPKH { ref outpoint, ref key, ref output } => { + let input = TxIn { + previous_output: outpoint.clone(), + script_sig: Script::new(), + sequence: 0, + witness: Vec::new(), + }; + let outp = TxOut { + script_pubkey: Builder::new().push_opcode(opcodes::All::OP_RETURN).into_script(), + value: output.value, + }; + let mut spend_tx = Transaction { + version: 2, + lock_time: 0, + input: vec![input], + output: vec![outp], + }; + let secp_ctx = Secp256k1::new(); + let remotepubkey = PublicKey::from_secret_key(&secp_ctx, &key); + let witness_script = Address::p2pkh(&remotepubkey, Network::Testnet).script_pubkey(); + let sighash = Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx.input[0], &witness_script, output.value)[..]).unwrap(); + let remotesig = secp_ctx.sign(&sighash, key); + spend_tx.input[0].witness.push(remotesig.serialize_der(&secp_ctx).to_vec()); + spend_tx.input[0].witness[0].push(SigHashType::All as u8); + spend_tx.input[0].witness.push(remotepubkey.serialize().to_vec()); + txn.push(spend_tx); + }, + SpendableOutputDescriptor::DynamicOutputP2WSH { ref outpoint, ref key, ref witness_script, ref to_self_delay, ref output } => { + let input = TxIn { + previous_output: outpoint.clone(), + script_sig: Script::new(), + sequence: *to_self_delay as u32, + witness: Vec::new(), + }; + let outp = TxOut { + script_pubkey: Builder::new().push_opcode(opcodes::All::OP_RETURN).into_script(), + value: output.value, + }; + let mut spend_tx = Transaction { + version: 2, + lock_time: 0, + input: vec![input], + output: vec![outp], + }; + let secp_ctx = Secp256k1::new(); + let sighash = Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx.input[0], witness_script, output.value)[..]).unwrap(); + let local_delaysig = secp_ctx.sign(&sighash, key); + spend_tx.input[0].witness.push(local_delaysig.serialize_der(&secp_ctx).to_vec()); + spend_tx.input[0].witness[0].push(SigHashType::All as u8); + spend_tx.input[0].witness.push(vec!(0)); + spend_tx.input[0].witness.push(witness_script.clone().into_bytes()); + txn.push(spend_tx); + }, + SpendableOutputDescriptor::StaticOutput { ref outpoint, ref output } => { + let secp_ctx = Secp256k1::new(); + let input = TxIn { + previous_output: outpoint.clone(), + script_sig: Script::new(), + sequence: 0, + witness: Vec::new(), + }; + let outp = TxOut { + script_pubkey: Builder::new().push_opcode(opcodes::All::OP_RETURN).into_script(), + value: output.value, + }; + let mut spend_tx = Transaction { + version: 2, + lock_time: 0, + input: vec![input], + output: vec![outp.clone()], + }; + let secret = { + match ExtendedPrivKey::new_master(&secp_ctx, Network::Testnet, &$node.node_seed) { + Ok(master_key) => { + match master_key.ckd_priv(&secp_ctx, ChildNumber::from_hardened_idx($der_idx)) { + Ok(key) => key, + Err(_) => panic!("Your RNG is busted"), + } + } + Err(_) => panic!("Your rng is busted"), + } + }; + let pubkey = ExtendedPubKey::from_private(&secp_ctx, &secret).public_key; + let witness_script = Address::p2pkh(&pubkey, Network::Testnet).script_pubkey(); + let sighash = Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx.input[0], &witness_script, output.value)[..]).unwrap(); + let sig = secp_ctx.sign(&sighash, &secret.secret_key); + spend_tx.input[0].witness.push(sig.serialize_der(&secp_ctx).to_vec()); + spend_tx.input[0].witness[0].push(SigHashType::All as u8); + spend_tx.input[0].witness.push(pubkey.serialize().to_vec()); + txn.push(spend_tx); + }, + } + } + }, + _ => panic!("Unexpected event"), + }; + } + txn + } + } +} + +#[test] +fn test_claim_sizeable_push_msat() { + // Incidentally test SpendableOutput event generation due to detection of to_local output on commitment tx + let nodes = create_network(2); + + let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000); + nodes[1].node.force_close_channel(&chan.2); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 1); + check_spends!(node_txn[0], chan.3.clone()); + assert_eq!(node_txn[0].output.len(), 2); // We can't force trimming of to_remote output as channel_reserve_satoshis block us to do so at channel opening + + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[0].clone()] }, 0); + let spend_txn = check_spendable_outputs!(nodes[1], 1); + assert_eq!(spend_txn.len(), 1); + check_spends!(spend_txn[0], node_txn[0].clone()); +} + +#[test] +fn test_claim_on_remote_sizeable_push_msat() { + // Same test as previous, just test on remote commitment tx, as per_commitment_point registration changes following you're funder/fundee and + // to_remote output is encumbered by a P2WPKH + + let nodes = create_network(2); + + let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 99000000); + nodes[0].node.force_close_channel(&chan.2); + let events = nodes[0].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 1); + check_spends!(node_txn[0], chan.3.clone()); + assert_eq!(node_txn[0].output.len(), 2); // We can't force trimming of to_remote output as channel_reserve_satoshis block us to do so at channel opening + + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn[0].clone()] }, 0); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + let spend_txn = check_spendable_outputs!(nodes[1], 1); + assert_eq!(spend_txn.len(), 2); + assert_eq!(spend_txn[0], spend_txn[1]); + check_spends!(spend_txn[0], node_txn[0].clone()); +} + +#[test] +fn test_claim_on_remote_revoked_sizeable_push_msat() { + // Same test as previous, just test on remote revoked commitment tx, as per_commitment_point registration changes following you're funder/fundee and + // to_remote output is encumbered by a P2WPKH + + let nodes = create_network(2); + + let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 100000, 59000000); + let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; + let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan.2).unwrap().last_local_commitment_txn.clone(); + assert_eq!(revoked_local_txn[0].input.len(), 1); + assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan.3.txid()); + + claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage); + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + let spend_txn = check_spendable_outputs!(nodes[1], 1); + assert_eq!(spend_txn.len(), 4); + assert_eq!(spend_txn[0], spend_txn[2]); // to_remote output on revoked remote commitment_tx + check_spends!(spend_txn[0], revoked_local_txn[0].clone()); + assert_eq!(spend_txn[1], spend_txn[3]); // to_local output on local commitment tx + check_spends!(spend_txn[1], node_txn[0].clone()); +} + +#[test] +fn test_static_spendable_outputs_preimage_tx() { + let nodes = create_network(2); + + // Create some initial channels + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + + let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; + + let commitment_tx = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); + assert_eq!(commitment_tx[0].input.len(), 1); + assert_eq!(commitment_tx[0].input[0].previous_output.txid, chan_1.3.txid()); + + // Settle A's commitment tx on B's chain + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + assert!(nodes[1].node.claim_funds(payment_preimage)); + check_added_monitors!(nodes[1], 1); + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()] }, 1); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::UpdateHTLCs { .. } => {}, + _ => panic!("Unexpected event"), + } + match events[1] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexepected event"), + } + + // Check B's monitor was able to send back output descriptor event for preimage tx on A's commitment tx + let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); // ChannelManager : 1 (local commitment tx), ChannelMonitor: 2 (1 preimage tx) * 2 (block-rescan) + check_spends!(node_txn[0], commitment_tx[0].clone()); + assert_eq!(node_txn[0], node_txn[2]); + assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); + check_spends!(node_txn[1], chan_1.3.clone()); + + let spend_txn = check_spendable_outputs!(nodes[1], 1); // , 0, 0, 1, 1); + assert_eq!(spend_txn.len(), 2); + assert_eq!(spend_txn[0], spend_txn[1]); + check_spends!(spend_txn[0], node_txn[0].clone()); +} + +#[test] +fn test_static_spendable_outputs_justice_tx_revoked_commitment_tx() { + let nodes = create_network(2); + + // Create some initial channels + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + + let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; + let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.iter().next().unwrap().1.last_local_commitment_txn.clone(); + assert_eq!(revoked_local_txn[0].input.len(), 1); + assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid()); + + claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage); + + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 3); + assert_eq!(node_txn.pop().unwrap(), node_txn[0]); + assert_eq!(node_txn[0].input.len(), 2); + check_spends!(node_txn[0], revoked_local_txn[0].clone()); + + let spend_txn = check_spendable_outputs!(nodes[1], 1); + assert_eq!(spend_txn.len(), 2); + assert_eq!(spend_txn[0], spend_txn[1]); + check_spends!(spend_txn[0], node_txn[0].clone()); +} + +#[test] +fn test_static_spendable_outputs_justice_tx_revoked_htlc_timeout_tx() { + let nodes = create_network(2); + + // Create some initial channels + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + + let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; + let revoked_local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); + assert_eq!(revoked_local_txn[0].input.len(), 1); + assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid()); + + claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage); + + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + // A will generate HTLC-Timeout from revoked commitment tx + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + let events = nodes[0].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + let revoked_htlc_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(revoked_htlc_txn.len(), 3); + assert_eq!(revoked_htlc_txn[0], revoked_htlc_txn[2]); + assert_eq!(revoked_htlc_txn[0].input.len(), 1); + assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); + check_spends!(revoked_htlc_txn[0], revoked_local_txn[0].clone()); + check_spends!(revoked_htlc_txn[1], chan_1.3.clone()); + + // B will generate justice tx from A's revoked commitment/HTLC tx + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] }, 1); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + + let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 4); + assert_eq!(node_txn[3].input.len(), 1); + check_spends!(node_txn[3], revoked_htlc_txn[0].clone()); + + // Check B's ChannelMonitor was able to generate the right spendable output descriptor + let spend_txn = check_spendable_outputs!(nodes[1], 1); + assert_eq!(spend_txn.len(), 3); + assert_eq!(spend_txn[0], spend_txn[1]); + check_spends!(spend_txn[0], node_txn[0].clone()); + check_spends!(spend_txn[2], node_txn[3].clone()); +} + +#[test] +fn test_static_spendable_outputs_justice_tx_revoked_htlc_success_tx() { + let nodes = create_network(2); + + // Create some initial channels + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + + let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 3000000).0; + let revoked_local_txn = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); + assert_eq!(revoked_local_txn[0].input.len(), 1); + assert_eq!(revoked_local_txn[0].input[0].previous_output.txid, chan_1.3.txid()); + + claim_payment(&nodes[0], &vec!(&nodes[1])[..], payment_preimage); + + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + // B will generate HTLC-Success from revoked commitment tx + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + let revoked_htlc_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + + assert_eq!(revoked_htlc_txn.len(), 3); + assert_eq!(revoked_htlc_txn[0], revoked_htlc_txn[2]); + assert_eq!(revoked_htlc_txn[0].input.len(), 1); + assert_eq!(revoked_htlc_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); + check_spends!(revoked_htlc_txn[0], revoked_local_txn[0].clone()); + + // A will generate justice tx from B's revoked commitment/HTLC tx + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone(), revoked_htlc_txn[0].clone()] }, 1); + let events = nodes[0].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + + let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 4); + assert_eq!(node_txn[3].input.len(), 1); + check_spends!(node_txn[3], revoked_htlc_txn[0].clone()); + + // Check A's ChannelMonitor was able to generate the right spendable output descriptor + let spend_txn = check_spendable_outputs!(nodes[0], 1); + assert_eq!(spend_txn.len(), 5); + assert_eq!(spend_txn[0], spend_txn[2]); + assert_eq!(spend_txn[1], spend_txn[3]); + check_spends!(spend_txn[0], revoked_local_txn[0].clone()); // spending to_remote output from revoked local tx + check_spends!(spend_txn[1], node_txn[2].clone()); // spending justice tx output from revoked local tx htlc received output + check_spends!(spend_txn[4], node_txn[3].clone()); // spending justice tx output on htlc success tx +} + +#[test] +fn test_onchain_to_onchain_claim() { + // Test that in case of channel closure, we detect the state of output thanks to + // ChainWatchInterface and claim HTLC on downstream peer's remote commitment tx. + // First, have C claim an HTLC against its own latest commitment transaction. + // Then, broadcast these to B, which should update the monitor downstream on the A<->B + // channel. + // Finally, check that B will claim the HTLC output if A's latest commitment transaction + // gets broadcast. + + let nodes = create_network(3); + + // Create some initial channels + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); + + // Rebalance the network a bit by relaying one payment through all the channels ... + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000); + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 8000000); + + let (payment_preimage, _payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2]), 3000000); + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42}; + let commitment_tx = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone(); + check_spends!(commitment_tx[0], chan_2.3.clone()); + nodes[2].node.claim_funds(payment_preimage); + check_added_monitors!(nodes[2], 1); + let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert_eq!(updates.update_fulfill_htlcs.len(), 1); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + + nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1); + let events = nodes[2].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + + let c_txn = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); // ChannelManager : 2 (commitment tx, HTLC-Success tx), ChannelMonitor : 1 (HTLC-Success tx) + assert_eq!(c_txn.len(), 3); + assert_eq!(c_txn[0], c_txn[2]); + assert_eq!(commitment_tx[0], c_txn[1]); + check_spends!(c_txn[1], chan_2.3.clone()); + check_spends!(c_txn[2], c_txn[1].clone()); + assert_eq!(c_txn[1].input[0].witness.clone().last().unwrap().len(), 71); + assert_eq!(c_txn[2].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); + assert!(c_txn[0].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output + assert_eq!(c_txn[0].lock_time, 0); // Success tx + + // So we broadcast C's commitment tx and HTLC-Success on B's chain, we should successfully be able to extract preimage and update downstream monitor + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![c_txn[1].clone(), c_txn[2].clone()]}, 1); + { + let mut b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(b_txn.len(), 4); + assert_eq!(b_txn[0], b_txn[3]); + check_spends!(b_txn[1], chan_2.3); // B local commitment tx, issued by ChannelManager + check_spends!(b_txn[2], b_txn[1].clone()); // HTLC-Timeout on B local commitment tx, issued by ChannelManager + assert_eq!(b_txn[2].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); + assert!(b_txn[2].output[0].script_pubkey.is_v0_p2wsh()); // revokeable output + assert_ne!(b_txn[2].lock_time, 0); // Timeout tx + check_spends!(b_txn[0], c_txn[1].clone()); // timeout tx on C remote commitment tx, issued by ChannelMonitor, * 2 due to block rescan + assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); + assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment + assert_ne!(b_txn[2].lock_time, 0); // Timeout tx + b_txn.clear(); + } + let msg_events = nodes[1].node.get_and_clear_pending_msg_events(); + check_added_monitors!(nodes[1], 1); + match msg_events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } + match msg_events[1] { + MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, .. } } => { + assert!(update_add_htlcs.is_empty()); + assert!(update_fail_htlcs.is_empty()); + assert_eq!(update_fulfill_htlcs.len(), 1); + assert!(update_fail_malformed_htlcs.is_empty()); + assert_eq!(nodes[0].node.get_our_node_id(), *node_id); + }, + _ => panic!("Unexpected event"), + }; + // Broadcast A's commitment tx on B's chain to see if we are able to claim inbound HTLC with our HTLC-Success tx + let commitment_tx = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_tx[0].clone()]}, 1); + let b_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(b_txn.len(), 3); + check_spends!(b_txn[1], chan_1.3); // Local commitment tx, issued by ChannelManager + assert_eq!(b_txn[0], b_txn[2]); // HTLC-Success tx, issued by ChannelMonitor, * 2 due to block rescan + check_spends!(b_txn[0], commitment_tx[0].clone()); + assert_eq!(b_txn[0].input[0].witness.clone().last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); + assert!(b_txn[0].output[0].script_pubkey.is_v0_p2wpkh()); // direct payment + assert_eq!(b_txn[2].lock_time, 0); // Success tx + let msg_events = nodes[1].node.get_and_clear_pending_msg_events(); + match msg_events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexpected event"), + } +} + +#[test] +fn test_duplicate_payment_hash_one_failure_one_success() { + // Topology : A --> B --> C + // We route 2 payments with same hash between B and C, one will be timeout, the other successfully claim + let mut nodes = create_network(3); + + create_announced_chan_between_nodes(&nodes, 0, 1); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2); + + let (our_payment_preimage, duplicate_payment_hash) = route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 900000); + *nodes[0].network_payment_count.borrow_mut() -= 1; + assert_eq!(route_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 900000).1, duplicate_payment_hash); + + let commitment_txn = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone(); + assert_eq!(commitment_txn[0].input.len(), 1); + check_spends!(commitment_txn[0], chan_2.3.clone()); + + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_txn[0].clone()] }, 1); + let htlc_timeout_tx; + { // Extract one of the two HTLC-Timeout transaction + let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn.len(), 7); + assert_eq!(node_txn[0], node_txn[5]); + assert_eq!(node_txn[1], node_txn[6]); + check_spends!(node_txn[0], commitment_txn[0].clone()); + assert_eq!(node_txn[0].input.len(), 1); + check_spends!(node_txn[1], commitment_txn[0].clone()); + assert_eq!(node_txn[1].input.len(), 1); + assert_ne!(node_txn[0].input[0], node_txn[1].input[0]); + check_spends!(node_txn[2], chan_2.3.clone()); + check_spends!(node_txn[3], node_txn[2].clone()); + check_spends!(node_txn[4], node_txn[2].clone()); + htlc_timeout_tx = node_txn[1].clone(); + } + + let events = nodes[1].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexepected event"), + } + + nodes[2].node.claim_funds(our_payment_preimage); + nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![commitment_txn[0].clone()] }, 1); + check_added_monitors!(nodes[2], 2); + let events = nodes[2].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::UpdateHTLCs { .. } => {}, + _ => panic!("Unexpected event"), + } + match events[1] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexepected event"), + } + let htlc_success_txn: Vec<_> = nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().clone(); + assert_eq!(htlc_success_txn.len(), 5); + check_spends!(htlc_success_txn[2], chan_2.3.clone()); + assert_eq!(htlc_success_txn[0], htlc_success_txn[3]); + assert_eq!(htlc_success_txn[0].input.len(), 1); + assert_eq!(htlc_success_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); + assert_eq!(htlc_success_txn[1], htlc_success_txn[4]); + assert_eq!(htlc_success_txn[1].input.len(), 1); + assert_eq!(htlc_success_txn[1].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); + assert_ne!(htlc_success_txn[0].input[0], htlc_success_txn[1].input[0]); + check_spends!(htlc_success_txn[0], commitment_txn[0].clone()); + check_spends!(htlc_success_txn[1], commitment_txn[0].clone()); + + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![htlc_timeout_tx] }, 200); + let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + assert!(htlc_updates.update_add_htlcs.is_empty()); + assert_eq!(htlc_updates.update_fail_htlcs.len(), 1); + assert_eq!(htlc_updates.update_fail_htlcs[0].htlc_id, 1); + assert!(htlc_updates.update_fulfill_htlcs.is_empty()); + assert!(htlc_updates.update_fail_malformed_htlcs.is_empty()); + check_added_monitors!(nodes[1], 1); + + nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]).unwrap(); + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + { + commitment_signed_dance!(nodes[0], nodes[1], &htlc_updates.commitment_signed, false, true); + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelClosed { .. } } => { + }, + _ => { panic!("Unexpected event"); } + } + } + let events = nodes[0].node.get_and_clear_pending_events(); + match events[0] { + Event::PaymentFailed { ref payment_hash, .. } => { + assert_eq!(*payment_hash, duplicate_payment_hash); + } + _ => panic!("Unexpected event"), + } + + // Solve 2nd HTLC by broadcasting on B's chain HTLC-Success Tx from C + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![htlc_success_txn[0].clone()] }, 200); + let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert_eq!(updates.update_fulfill_htlcs.len(), 1); + assert_eq!(updates.update_fulfill_htlcs[0].htlc_id, 0); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + check_added_monitors!(nodes[1], 1); + + nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]).unwrap(); + commitment_signed_dance!(nodes[0], nodes[1], &updates.commitment_signed, false); + + let events = nodes[0].node.get_and_clear_pending_events(); + match events[0] { + Event::PaymentSent { ref payment_preimage } => { + assert_eq!(*payment_preimage, our_payment_preimage); + } + _ => panic!("Unexpected event"), + } +} + +#[test] +fn test_dynamic_spendable_outputs_local_htlc_success_tx() { + let nodes = create_network(2); + + // Create some initial channels + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + + let payment_preimage = route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000).0; + let local_txn = nodes[1].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); + assert_eq!(local_txn[0].input.len(), 1); + check_spends!(local_txn[0], chan_1.3.clone()); + + // Give B knowledge of preimage to be able to generate a local HTLC-Success Tx + nodes[1].node.claim_funds(payment_preimage); + check_added_monitors!(nodes[1], 1); + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![local_txn[0].clone()] }, 1); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::UpdateHTLCs { .. } => {}, + _ => panic!("Unexpected event"), + } + match events[1] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexepected event"), + } + let node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn[0].input.len(), 1); + assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), ACCEPTED_HTLC_SCRIPT_WEIGHT); + check_spends!(node_txn[0], local_txn[0].clone()); + + // Verify that B is able to spend its own HTLC-Success tx thanks to spendable output event given back by its ChannelMonitor + let spend_txn = check_spendable_outputs!(nodes[1], 1); + assert_eq!(spend_txn.len(), 2); + check_spends!(spend_txn[0], node_txn[0].clone()); + check_spends!(spend_txn[1], node_txn[2].clone()); +} + +#[test] +fn test_dynamic_spendable_outputs_local_htlc_timeout_tx() { + let nodes = create_network(2); + + // Create some initial channels + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1); + + route_payment(&nodes[0], &vec!(&nodes[1])[..], 9000000).0; + let local_txn = nodes[0].node.channel_state.lock().unwrap().by_id.get(&chan_1.2).unwrap().last_local_commitment_txn.clone(); + assert_eq!(local_txn[0].input.len(), 1); + check_spends!(local_txn[0], chan_1.3.clone()); + + // Timeout HTLC on A's chain and so it can generate a HTLC-Timeout tx + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![local_txn[0].clone()] }, 200); + let events = nodes[0].node.get_and_clear_pending_msg_events(); + match events[0] { + MessageSendEvent::BroadcastChannelUpdate { .. } => {}, + _ => panic!("Unexepected event"), + } + let node_txn = nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap(); + assert_eq!(node_txn[0].input.len(), 1); + assert_eq!(node_txn[0].input[0].witness.last().unwrap().len(), OFFERED_HTLC_SCRIPT_WEIGHT); + check_spends!(node_txn[0], local_txn[0].clone()); + + // Verify that A is able to spend its own HTLC-Timeout tx thanks to spendable output event given back by its ChannelMonitor + let spend_txn = check_spendable_outputs!(nodes[0], 1); + assert_eq!(spend_txn.len(), 8); + assert_eq!(spend_txn[0], spend_txn[2]); + assert_eq!(spend_txn[0], spend_txn[4]); + assert_eq!(spend_txn[0], spend_txn[6]); + assert_eq!(spend_txn[1], spend_txn[3]); + assert_eq!(spend_txn[1], spend_txn[5]); + assert_eq!(spend_txn[1], spend_txn[7]); + check_spends!(spend_txn[0], local_txn[0].clone()); + check_spends!(spend_txn[1], node_txn[0].clone()); +} + +#[test] +fn test_static_output_closing_tx() { + let nodes = create_network(2); + + let chan = create_announced_chan_between_nodes(&nodes, 0, 1); + + send_payment(&nodes[0], &vec!(&nodes[1])[..], 8000000); + let closing_tx = close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true).2; + + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![closing_tx.clone()] }, 1); + let spend_txn = check_spendable_outputs!(nodes[0], 2); + assert_eq!(spend_txn.len(), 1); + check_spends!(spend_txn[0], closing_tx.clone()); + + nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![closing_tx.clone()] }, 1); + let spend_txn = check_spendable_outputs!(nodes[1], 2); + assert_eq!(spend_txn.len(), 1); + check_spends!(spend_txn[0], closing_tx); +} + +fn run_onion_failure_test(_name: &str, test_case: u8, nodes: &Vec, route: &Route, payment_hash: &PaymentHash, callback_msg: F1, callback_node: F2, expected_retryable: bool, expected_error_code: Option, expected_channel_update: Option) + where F1: for <'a> FnMut(&'a mut msgs::UpdateAddHTLC), + F2: FnMut(), +{ + run_onion_failure_test_with_fail_intercept(_name, test_case, nodes, route, payment_hash, callback_msg, |_|{}, callback_node, expected_retryable, expected_error_code, expected_channel_update); +} + +// test_case +// 0: node1 fail backward +// 1: final node fail backward +// 2: payment completed but the user reject the payment +// 3: final node fail backward (but tamper onion payloads from node0) +// 100: trigger error in the intermediate node and tamper returnning fail_htlc +// 200: trigger error in the final node and tamper returnning fail_htlc +fn run_onion_failure_test_with_fail_intercept(_name: &str, test_case: u8, nodes: &Vec, route: &Route, payment_hash: &PaymentHash, mut callback_msg: F1, mut callback_fail: F2, mut callback_node: F3, expected_retryable: bool, expected_error_code: Option, expected_channel_update: Option) + where F1: for <'a> FnMut(&'a mut msgs::UpdateAddHTLC), + F2: for <'a> FnMut(&'a mut msgs::UpdateFailHTLC), + F3: FnMut(), +{ + use ln::msgs::HTLCFailChannelUpdate; + + // reset block height + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + for ix in 0..nodes.len() { + nodes[ix].chain_monitor.block_connected_checked(&header, 1, &Vec::new()[..], &[0; 0]); + } + + macro_rules! expect_event { + ($node: expr, $event_type: path) => {{ + let events = $node.node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + $event_type { .. } => {}, + _ => panic!("Unexpected event"), + } + }} + } + + macro_rules! expect_htlc_forward { + ($node: expr) => {{ + expect_event!($node, Event::PendingHTLCsForwardable); + $node.node.channel_state.lock().unwrap().next_forward = Instant::now(); + $node.node.process_pending_htlc_forwards(); + }} + } + + // 0 ~~> 2 send payment + nodes[0].node.send_payment(route.clone(), payment_hash.clone()).unwrap(); + check_added_monitors!(nodes[0], 1); + let update_0 = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + // temper update_add (0 => 1) + let mut update_add_0 = update_0.update_add_htlcs[0].clone(); + if test_case == 0 || test_case == 3 || test_case == 100 { + callback_msg(&mut update_add_0); + callback_node(); + } + // 0 => 1 update_add & CS + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &update_add_0).unwrap(); + commitment_signed_dance!(nodes[1], nodes[0], &update_0.commitment_signed, false, true); + + let update_1_0 = match test_case { + 0|100 => { // intermediate node failure; fail backward to 0 + let update_1_0 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + assert!(update_1_0.update_fail_htlcs.len()+update_1_0.update_fail_malformed_htlcs.len()==1 && (update_1_0.update_fail_htlcs.len()==1 || update_1_0.update_fail_malformed_htlcs.len()==1)); + update_1_0 + }, + 1|2|3|200 => { // final node failure; forwarding to 2 + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + // forwarding on 1 + if test_case != 200 { + callback_node(); + } + expect_htlc_forward!(&nodes[1]); + + let update_1 = get_htlc_update_msgs!(nodes[1], nodes[2].node.get_our_node_id()); + check_added_monitors!(&nodes[1], 1); + assert_eq!(update_1.update_add_htlcs.len(), 1); + // tamper update_add (1 => 2) + let mut update_add_1 = update_1.update_add_htlcs[0].clone(); + if test_case != 3 && test_case != 200 { + callback_msg(&mut update_add_1); + } + + // 1 => 2 + nodes[2].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &update_add_1).unwrap(); + commitment_signed_dance!(nodes[2], nodes[1], update_1.commitment_signed, false, true); + + if test_case == 2 || test_case == 200 { + expect_htlc_forward!(&nodes[2]); + expect_event!(&nodes[2], Event::PaymentReceived); + callback_node(); + } + + let update_2_1 = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + if test_case == 2 || test_case == 200 { + check_added_monitors!(&nodes[2], 1); + } + assert!(update_2_1.update_fail_htlcs.len() == 1); + + let mut fail_msg = update_2_1.update_fail_htlcs[0].clone(); + if test_case == 200 { + callback_fail(&mut fail_msg); + } + + // 2 => 1 + nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &fail_msg).unwrap(); + commitment_signed_dance!(nodes[1], nodes[2], update_2_1.commitment_signed, true, true); + + // backward fail on 1 + let update_1_0 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + assert!(update_1_0.update_fail_htlcs.len() == 1); + update_1_0 + }, + _ => unreachable!(), + }; + + // 1 => 0 commitment_signed_dance + if update_1_0.update_fail_htlcs.len() > 0 { + let mut fail_msg = update_1_0.update_fail_htlcs[0].clone(); + if test_case == 100 { + callback_fail(&mut fail_msg); + } + nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &fail_msg).unwrap(); + } else { + nodes[0].node.handle_update_fail_malformed_htlc(&nodes[1].node.get_our_node_id(), &update_1_0.update_fail_malformed_htlcs[0]).unwrap(); + }; + + commitment_signed_dance!(nodes[0], nodes[1], update_1_0.commitment_signed, false, true); + + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + if let &Event::PaymentFailed { payment_hash:_, ref rejected_by_dest, ref error_code } = &events[0] { + assert_eq!(*rejected_by_dest, !expected_retryable); + assert_eq!(*error_code, expected_error_code); + } else { + panic!("Uexpected event"); + } + + let events = nodes[0].node.get_and_clear_pending_msg_events(); + if expected_channel_update.is_some() { + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::PaymentFailureNetworkUpdate { ref update } => { + match update { + &HTLCFailChannelUpdate::ChannelUpdateMessage { .. } => { + if let HTLCFailChannelUpdate::ChannelUpdateMessage { .. } = expected_channel_update.unwrap() {} else { + panic!("channel_update not found!"); + } + }, + &HTLCFailChannelUpdate::ChannelClosed { ref short_channel_id, ref is_permanent } => { + if let HTLCFailChannelUpdate::ChannelClosed { short_channel_id: ref expected_short_channel_id, is_permanent: ref expected_is_permanent } = expected_channel_update.unwrap() { + assert!(*short_channel_id == *expected_short_channel_id); + assert!(*is_permanent == *expected_is_permanent); + } else { + panic!("Unexpected message event"); + } + }, + &HTLCFailChannelUpdate::NodeFailure { ref node_id, ref is_permanent } => { + if let HTLCFailChannelUpdate::NodeFailure { node_id: ref expected_node_id, is_permanent: ref expected_is_permanent } = expected_channel_update.unwrap() { + assert!(*node_id == *expected_node_id); + assert!(*is_permanent == *expected_is_permanent); + } else { + panic!("Unexpected message event"); + } + }, + } + }, + _ => panic!("Unexpected message event"), + } + } else { + assert_eq!(events.len(), 0); + } +} + +impl msgs::ChannelUpdate { + fn dummy() -> msgs::ChannelUpdate { + use secp256k1::ffi::Signature as FFISignature; + use secp256k1::Signature; + msgs::ChannelUpdate { + signature: Signature::from(FFISignature::new()), + contents: msgs::UnsignedChannelUpdate { + chain_hash: Sha256dHash::from_data(&vec![0u8][..]), + short_channel_id: 0, + timestamp: 0, + flags: 0, + cltv_expiry_delta: 0, + htlc_minimum_msat: 0, + fee_base_msat: 0, + fee_proportional_millionths: 0, + excess_data: vec![], + } + } + } +} + +#[test] +fn test_onion_failure() { + use ln::msgs::ChannelUpdate; + use ln::channelmanager::CLTV_FAR_FAR_AWAY; + use secp256k1; + + const BADONION: u16 = 0x8000; + const PERM: u16 = 0x4000; + const NODE: u16 = 0x2000; + const UPDATE: u16 = 0x1000; + + let mut nodes = create_network(3); + for node in nodes.iter() { + *node.keys_manager.override_session_priv.lock().unwrap() = Some(SecretKey::from_slice(&Secp256k1::without_caps(), &[3; 32]).unwrap()); + } + let channels = [create_announced_chan_between_nodes(&nodes, 0, 1), create_announced_chan_between_nodes(&nodes, 1, 2)]; + let (_, payment_hash) = get_payment_preimage_hash!(nodes[0]); + let route = nodes[0].router.get_route(&nodes[2].node.get_our_node_id(), None, &Vec::new(), 40000, TEST_FINAL_CLTV).unwrap(); + // positve case + send_payment(&nodes[0], &vec!(&nodes[1], &nodes[2])[..], 40000); + + // intermediate node failure + run_onion_failure_test("invalid_realm", 0, &nodes, &route, &payment_hash, |msg| { + let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); + let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1; + let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); + let (mut onion_payloads, _htlc_msat, _htlc_cltv) = onion_utils::build_onion_payloads(&route, cur_height).unwrap(); + onion_payloads[0].realm = 3; + msg.onion_routing_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &payment_hash); + }, ||{}, true, Some(PERM|1), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true}));//XXX incremented channels idx here + + // final node failure + run_onion_failure_test("invalid_realm", 3, &nodes, &route, &payment_hash, |msg| { + let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); + let cur_height = nodes[0].node.latest_block_height.load(Ordering::Acquire) as u32 + 1; + let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); + let (mut onion_payloads, _htlc_msat, _htlc_cltv) = onion_utils::build_onion_payloads(&route, cur_height).unwrap(); + onion_payloads[1].realm = 3; + msg.onion_routing_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &payment_hash); + }, ||{}, false, Some(PERM|1), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true})); + + // the following three with run_onion_failure_test_with_fail_intercept() test only the origin node + // receiving simulated fail messages + // intermediate node failure + run_onion_failure_test_with_fail_intercept("temporary_node_failure", 100, &nodes, &route, &payment_hash, |msg| { + // trigger error + msg.amount_msat -= 1; + }, |msg| { + // and tamper returing error message + let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); + let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); + msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], NODE|2, &[0;0]); + }, ||{}, true, Some(NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[0].pubkey, is_permanent: false})); + + // final node failure + run_onion_failure_test_with_fail_intercept("temporary_node_failure", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| { + // and tamper returing error message + let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); + let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); + msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], NODE|2, &[0;0]); + }, ||{ + nodes[2].node.fail_htlc_backwards(&payment_hash, 0); + }, true, Some(NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[1].pubkey, is_permanent: false})); + + // intermediate node failure + run_onion_failure_test_with_fail_intercept("permanent_node_failure", 100, &nodes, &route, &payment_hash, |msg| { + msg.amount_msat -= 1; + }, |msg| { + let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); + let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); + msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|NODE|2, &[0;0]); + }, ||{}, true, Some(PERM|NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[0].pubkey, is_permanent: true})); + + // final node failure + run_onion_failure_test_with_fail_intercept("permanent_node_failure", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| { + let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); + let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); + msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], PERM|NODE|2, &[0;0]); + }, ||{ + nodes[2].node.fail_htlc_backwards(&payment_hash, 0); + }, false, Some(PERM|NODE|2), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[1].pubkey, is_permanent: true})); + + // intermediate node failure + run_onion_failure_test_with_fail_intercept("required_node_feature_missing", 100, &nodes, &route, &payment_hash, |msg| { + msg.amount_msat -= 1; + }, |msg| { + let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); + let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); + msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|NODE|3, &[0;0]); + }, ||{ + nodes[2].node.fail_htlc_backwards(&payment_hash, 0); + }, true, Some(PERM|NODE|3), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[0].pubkey, is_permanent: true})); + + // final node failure + run_onion_failure_test_with_fail_intercept("required_node_feature_missing", 200, &nodes, &route, &payment_hash, |_msg| {}, |msg| { + let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); + let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); + msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[1].shared_secret[..], PERM|NODE|3, &[0;0]); + }, ||{ + nodes[2].node.fail_htlc_backwards(&payment_hash, 0); + }, false, Some(PERM|NODE|3), Some(msgs::HTLCFailChannelUpdate::NodeFailure{node_id: route.hops[1].pubkey, is_permanent: true})); + + run_onion_failure_test("invalid_onion_version", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.version = 1; }, ||{}, true, + Some(BADONION|PERM|4), None); + + run_onion_failure_test("invalid_onion_hmac", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.hmac = [3; 32]; }, ||{}, true, + Some(BADONION|PERM|5), None); + + run_onion_failure_test("invalid_onion_key", 0, &nodes, &route, &payment_hash, |msg| { msg.onion_routing_packet.public_key = Err(secp256k1::Error::InvalidPublicKey);}, ||{}, true, + Some(BADONION|PERM|6), None); + + run_onion_failure_test_with_fail_intercept("temporary_channel_failure", 100, &nodes, &route, &payment_hash, |msg| { + msg.amount_msat -= 1; + }, |msg| { + let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); + let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); + msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], UPDATE|7, &ChannelUpdate::dummy().encode_with_len()[..]); + }, ||{}, true, Some(UPDATE|7), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()})); + + run_onion_failure_test_with_fail_intercept("permanent_channel_failure", 100, &nodes, &route, &payment_hash, |msg| { + msg.amount_msat -= 1; + }, |msg| { + let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); + let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); + msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|8, &[0;0]); + // short_channel_id from the processing node + }, ||{}, true, Some(PERM|8), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true})); + + run_onion_failure_test_with_fail_intercept("required_channel_feature_missing", 100, &nodes, &route, &payment_hash, |msg| { + msg.amount_msat -= 1; + }, |msg| { + let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); + let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); + msg.reason = onion_utils::build_first_hop_failure_packet(&onion_keys[0].shared_secret[..], PERM|9, &[0;0]); + // short_channel_id from the processing node + }, ||{}, true, Some(PERM|9), Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: channels[1].0.contents.short_channel_id, is_permanent: true})); + + let mut bogus_route = route.clone(); + bogus_route.hops[1].short_channel_id -= 1; + run_onion_failure_test("unknown_next_peer", 0, &nodes, &bogus_route, &payment_hash, |_| {}, ||{}, true, Some(PERM|10), + Some(msgs::HTLCFailChannelUpdate::ChannelClosed{short_channel_id: bogus_route.hops[1].short_channel_id, is_permanent:true})); + + let amt_to_forward = nodes[1].node.channel_state.lock().unwrap().by_id.get(&channels[1].2).unwrap().get_their_htlc_minimum_msat() - 1; + let mut bogus_route = route.clone(); + let route_len = bogus_route.hops.len(); + bogus_route.hops[route_len-1].fee_msat = amt_to_forward; + run_onion_failure_test("amount_below_minimum", 0, &nodes, &bogus_route, &payment_hash, |_| {}, ||{}, true, Some(UPDATE|11), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()})); + + //TODO: with new config API, we will be able to generate both valid and + //invalid channel_update cases. + run_onion_failure_test("fee_insufficient", 0, &nodes, &route, &payment_hash, |msg| { + msg.amount_msat -= 1; + }, || {}, true, Some(UPDATE|12), Some(msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id: channels[0].0.contents.short_channel_id, is_permanent: true})); + + run_onion_failure_test("incorrect_cltv_expiry", 0, &nodes, &route, &payment_hash, |msg| { + // need to violate: cltv_expiry - cltv_expiry_delta >= outgoing_cltv_value + msg.cltv_expiry -= 1; + }, || {}, true, Some(UPDATE|13), Some(msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id: channels[0].0.contents.short_channel_id, is_permanent: true})); + + run_onion_failure_test("expiry_too_soon", 0, &nodes, &route, &payment_hash, |msg| { + let height = msg.cltv_expiry - CLTV_CLAIM_BUFFER - HTLC_FAIL_TIMEOUT_BLOCKS + 1; + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[1].chain_monitor.block_connected_checked(&header, height, &Vec::new()[..], &[0; 0]); + }, ||{}, true, Some(UPDATE|14), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()})); + + run_onion_failure_test("unknown_payment_hash", 2, &nodes, &route, &payment_hash, |_| {}, || { + nodes[2].node.fail_htlc_backwards(&payment_hash, 0); + }, false, Some(PERM|15), None); + + run_onion_failure_test("final_expiry_too_soon", 1, &nodes, &route, &payment_hash, |msg| { + let height = msg.cltv_expiry - CLTV_CLAIM_BUFFER - HTLC_FAIL_TIMEOUT_BLOCKS + 1; + let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 }; + nodes[2].chain_monitor.block_connected_checked(&header, height, &Vec::new()[..], &[0; 0]); + }, || {}, true, Some(17), None); + + run_onion_failure_test("final_incorrect_cltv_expiry", 1, &nodes, &route, &payment_hash, |_| {}, || { + for (_, mut pending_forwards) in nodes[1].node.channel_state.lock().unwrap().borrow_parts().forward_htlcs.iter_mut() { + for f in pending_forwards.iter_mut() { + f.forward_info.outgoing_cltv_value += 1; + } + } + }, true, Some(18), None); + + run_onion_failure_test("final_incorrect_htlc_amount", 1, &nodes, &route, &payment_hash, |_| {}, || { + // violate amt_to_forward > msg.amount_msat + for (_, mut pending_forwards) in nodes[1].node.channel_state.lock().unwrap().borrow_parts().forward_htlcs.iter_mut() { + for f in pending_forwards.iter_mut() { + f.forward_info.amt_to_forward -= 1; + } + } + }, true, Some(19), None); + + run_onion_failure_test("channel_disabled", 0, &nodes, &route, &payment_hash, |_| {}, || { + // disconnect event to the channel between nodes[1] ~ nodes[2] + nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id(), false); + nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + }, true, Some(UPDATE|20), Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy()})); + reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (false, false)); + + run_onion_failure_test("expiry_too_far", 0, &nodes, &route, &payment_hash, |msg| { + let session_priv = SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[3; 32]).unwrap(); + let mut route = route.clone(); + let height = 1; + route.hops[1].cltv_expiry_delta += CLTV_FAR_FAR_AWAY + route.hops[0].cltv_expiry_delta + 1; + let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route, &session_priv).unwrap(); + let (onion_payloads, _, htlc_cltv) = onion_utils::build_onion_payloads(&route, height).unwrap(); + let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, &payment_hash); + msg.cltv_expiry = htlc_cltv; + msg.onion_routing_packet = onion_packet; + }, ||{}, true, Some(21), None); +} diff --git a/src/ln/mod.rs b/src/ln/mod.rs index 14ef3b698..adf54e8e2 100644 --- a/src/ln/mod.rs +++ b/src/ln/mod.rs @@ -23,3 +23,6 @@ pub(crate) mod peer_channel_encryptor; mod channel; mod chan_utils; mod onion_utils; + +#[cfg(test)] +mod functional_tests;