use ln::channelmonitor::ManyChannelMonitor;
use ln::router::{Route,RouteHop};
use ln::msgs;
-use ln::msgs::{HandleError,ChannelMessageHandler,MsgEncodable,MsgDecodable};
+use ln::msgs::{HandleError,ChannelMessageHandler};
use util::{byte_utils, events, internal_traits, rng};
use util::sha2::Sha256;
+use util::ser::{Readable, Writeable};
use util::chacha20poly1305rfc::ChaCha20;
use util::logger::Logger;
use util::errors::APIError;
use std::{ptr, mem};
use std::collections::HashMap;
use std::collections::hash_map;
+use std::io::Cursor;
use std::sync::{Mutex,MutexGuard,Arc};
use std::sync::atomic::{AtomicUsize, Ordering};
use std::time::{Instant,Duration};
+/// We hold various information about HTLC relay in the HTLC objects in Channel itself:
+///
+/// Upon receipt of an HTLC from a peer, we'll give it a PendingHTLCStatus indicating if it should
+/// forward the HTLC with information it will give back to us when it does so, or if it should Fail
+/// the HTLC with the relevant message for the Channel to handle giving to the remote peer.
+///
+/// When a Channel forwards an HTLC to its peer, it will give us back the PendingForwardHTLCInfo
+/// which we will use to construct an outbound HTLC, with a relevant HTLCSource::PreviousHopData
+/// filled in to indicate where it came from (which we can use to either fail-backwards or fulfill
+/// the HTLC backwards along the relevant path).
+/// Alternatively, we can fill an outbound HTLC with a HTLCSource::OutboundRoute indicating this is
+/// our payment, which we can use to decode errors or inform the user that the payment was sent.
mod channel_held_info {
use ln::msgs;
+ use ln::router::Route;
+ use secp256k1::key::SecretKey;
+ use secp256k1::ecdh::SharedSecret;
/// Stores the info we will need to send when we want to forward an HTLC onwards
#[derive(Clone)] // See Channel::revoke_and_ack for why, tl;dr: Rust bug
pub struct PendingForwardHTLCInfo {
pub(super) onion_packet: Option<msgs::OnionPacket>,
+ pub(super) incoming_shared_secret: SharedSecret,
pub(super) payment_hash: [u8; 32],
pub(super) short_channel_id: u64,
- pub(super) prev_short_channel_id: u64,
pub(super) amt_to_forward: u64,
pub(super) outgoing_cltv_value: u32,
}
Fail(HTLCFailureMsg),
}
- #[cfg(feature = "fuzztarget")]
- impl PendingHTLCStatus {
+ /// Tracks the inbound corresponding to an outbound HTLC
+ #[derive(Clone)]
+ pub struct HTLCPreviousHopData {
+ pub(super) short_channel_id: u64,
+ pub(super) htlc_id: u64,
+ pub(super) incoming_packet_shared_secret: SharedSecret,
+ }
+
+ /// Tracks the inbound corresponding to an outbound HTLC
+ #[derive(Clone)]
+ pub enum HTLCSource {
+ PreviousHopData(HTLCPreviousHopData),
+ OutboundRoute {
+ route: Route,
+ session_priv: SecretKey,
+ },
+ }
+ #[cfg(test)]
+ impl HTLCSource {
pub fn dummy() -> Self {
- PendingHTLCStatus::Forward(PendingForwardHTLCInfo {
- onion_packet: None,
- payment_hash: [0; 32],
- short_channel_id: 0,
- prev_short_channel_id: 0,
- amt_to_forward: 0,
- outgoing_cltv_value: 0,
- })
+ HTLCSource::OutboundRoute {
+ route: Route { hops: Vec::new() },
+ session_priv: SecretKey::from_slice(&::secp256k1::Secp256k1::without_caps(), &[1; 32]).unwrap(),
+ }
}
}
#[derive(Clone)] // See Channel::revoke_and_ack for why, tl;dr: Rust bug
- pub enum HTLCFailReason {
+ pub(crate) enum HTLCFailReason {
ErrorPacket {
err: msgs::OnionErrorPacket,
},
data: Vec<u8>,
}
}
-
- #[cfg(feature = "fuzztarget")]
- impl HTLCFailReason {
- pub fn dummy() -> Self {
- HTLCFailReason::Reason {
- failure_code: 0, data: Vec::new(),
- }
- }
- }
-}
-#[cfg(feature = "fuzztarget")]
-pub use self::channel_held_info::*;
-#[cfg(not(feature = "fuzztarget"))]
-pub(crate) use self::channel_held_info::*;
-
-enum PendingOutboundHTLC {
- IntermediaryHopData {
- source_short_channel_id: u64,
- incoming_packet_shared_secret: SharedSecret,
- },
- OutboundRoute {
- route: Route,
- session_priv: SecretKey,
- },
- /// Used for channel rebalancing
- CycledRoute {
- source_short_channel_id: u64,
- incoming_packet_shared_secret: SharedSecret,
- route: Route,
- session_priv: SecretKey,
- }
}
+pub(super) use self::channel_held_info::*;
struct MsgHandleErrInternal {
err: msgs::HandleError,
/// probably increase this significantly.
const MIN_HTLC_RELAY_HOLDING_CELL_MILLIS: u32 = 50;
+struct HTLCForwardInfo {
+ prev_short_channel_id: u64,
+ prev_htlc_id: u64,
+ forward_info: PendingForwardHTLCInfo,
+}
+
struct ChannelHolder {
by_id: HashMap<[u8; 32], Channel>,
short_to_id: HashMap<u64, [u8; 32]>,
/// 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<u64, Vec<PendingForwardHTLCInfo>>,
+ forward_htlcs: HashMap<u64, Vec<HTLCForwardInfo>>,
/// 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<[u8; 32], PendingOutboundHTLC>,
+ claimable_htlcs: HashMap<[u8; 32], Vec<HTLCPreviousHopData>>,
}
struct MutChannelHolder<'a> {
by_id: &'a mut HashMap<[u8; 32], Channel>,
short_to_id: &'a mut HashMap<u64, [u8; 32]>,
next_forward: &'a mut Instant,
- forward_htlcs: &'a mut HashMap<u64, Vec<PendingForwardHTLCInfo>>,
- claimable_htlcs: &'a mut HashMap<[u8; 32], PendingOutboundHTLC>,
+ forward_htlcs: &'a mut HashMap<u64, Vec<HTLCForwardInfo>>,
+ claimable_htlcs: &'a mut HashMap<[u8; 32], Vec<HTLCPreviousHopData>>,
}
impl ChannelHolder {
fn borrow_parts(&mut self) -> MutChannelHolder {
};
let channel = Channel::new_outbound(&*self.fee_estimator, chan_keys, their_network_key, channel_value_satoshis, push_msat, self.announce_channels_publicly, user_id, Arc::clone(&self.logger))?;
- let res = channel.get_open_channel(self.genesis_hash.clone(), &*self.fee_estimator)?;
+ let res = channel.get_open_channel(self.genesis_hash.clone(), &*self.fee_estimator);
let mut channel_state = self.channel_state.lock().unwrap();
match channel_state.by_id.insert(channel.channel_id(), channel) {
Some(_) => panic!("RNG is bad???"),
/// pending HTLCs, the channel will be closed on chain.
/// May generate a SendShutdown event on success, which should be relayed.
pub fn close_channel(&self, channel_id: &[u8; 32]) -> Result<(), HandleError> {
- let (res, node_id, chan_option) = {
+ let (mut res, node_id, chan_option) = {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = channel_state_lock.borrow_parts();
match channel_state.by_id.entry(channel_id.clone()) {
hash_map::Entry::Vacant(_) => return Err(HandleError{err: "No such channel", action: None})
}
};
- for payment_hash in res.1 {
+ for htlc_source in res.1.drain(..) {
// unknown_next_peer...I dunno who that is anymore....
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: Vec::new() });
+ self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source.0, &htlc_source.1, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: Vec::new() });
}
let chan_update = if let Some(chan) = chan_option {
if let Ok(update) = self.get_channel_update(&chan) {
}
#[inline]
- fn finish_force_close_channel(&self, shutdown_res: (Vec<Transaction>, Vec<[u8; 32]>)) {
- let (local_txn, failed_htlcs) = shutdown_res;
- for payment_hash in failed_htlcs {
+ fn finish_force_close_channel(&self, shutdown_res: (Vec<Transaction>, Vec<(HTLCSource, [u8; 32])>)) {
+ let (local_txn, mut failed_htlcs) = shutdown_res;
+ for htlc_source in failed_htlcs.drain(..) {
// unknown_next_peer...I dunno who that is anymore....
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: Vec::new() });
+ self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source.0, &htlc_source.1, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: Vec::new() });
}
for tx in local_txn {
self.tx_broadcaster.broadcast_transaction(&tx);
}
/// returns the hop data, as well as the first-hop value_msat and CLTV value we should send.
- fn build_onion_payloads(route: &Route, starting_htlc_offset: u32) -> Result<(Vec<msgs::OnionHopData>, u64, u32), HandleError> {
+ fn build_onion_payloads(route: &Route, starting_htlc_offset: u32) -> Result<(Vec<msgs::OnionHopData>, u64, u32), APIError> {
let mut cur_value_msat = 0u64;
let mut cur_cltv = starting_htlc_offset;
let mut last_short_channel_id = 0;
};
cur_value_msat += hop.fee_msat;
if cur_value_msat >= 21000000 * 100000000 * 1000 {
- return Err(HandleError{err: "Channel fees overflowed?!", action: None});
+ return Err(APIError::RouteError{err: "Channel fees overflowed?!"});
}
cur_cltv += hop.cltv_expiry_delta as u32;
if cur_cltv >= 500000000 {
- return Err(HandleError{err: "Channel CLTV overflowed?!", action: None});
+ return Err(APIError::RouteError{err: "Channel CLTV overflowed?!"});
}
last_short_channel_id = hop.short_channel_id;
}
}
const ZERO:[u8; 21*65] = [0; 21*65];
- fn construct_onion_packet(mut payloads: Vec<msgs::OnionHopData>, onion_keys: Vec<OnionKeys>, associated_data: &[u8; 32]) -> Result<msgs::OnionPacket, HandleError> {
+ fn construct_onion_packet(mut payloads: Vec<msgs::OnionHopData>, onion_keys: Vec<OnionKeys>, associated_data: &[u8; 32]) -> msgs::OnionPacket {
let mut buf = Vec::with_capacity(21*65);
buf.resize(21*65, 0);
hmac.raw_result(&mut hmac_res);
}
- Ok(msgs::OnionPacket{
+ msgs::OnionPacket{
version: 0,
public_key: Ok(onion_keys.first().unwrap().ephemeral_pubkey),
hop_data: packet_data,
hmac: hmac_res,
- })
+ }
}
/// Encrypts a failure packet. raw_packet can either be a
ChannelManager::encrypt_failure_packet(shared_secret, &failure_packet.encode()[..])
}
- fn decode_update_add_htlc_onion(&self, msg: &msgs::UpdateAddHTLC) -> (PendingHTLCStatus, Option<SharedSecret>, MutexGuard<ChannelHolder>) {
+ fn decode_update_add_htlc_onion(&self, msg: &msgs::UpdateAddHTLC) -> (PendingHTLCStatus, MutexGuard<ChannelHolder>) {
macro_rules! get_onion_hash {
() => {
{
htlc_id: msg.htlc_id,
sha256_of_onion: get_onion_hash!(),
failure_code: 0x8000 | 0x4000 | 6,
- })), None, self.channel_state.lock().unwrap());
+ })), self.channel_state.lock().unwrap());
}
let shared_secret = SharedSecret::new(&self.secp_ctx, &msg.onion_routing_packet.public_key.unwrap(), &self.our_network_key);
channel_id: msg.channel_id,
htlc_id: msg.htlc_id,
reason: ChannelManager::build_first_hop_failure_packet(&shared_secret, $err_code, $data),
- })), Some(shared_secret), channel_state.unwrap());
+ })), channel_state.unwrap());
}
}
}
let next_hop_data = {
let mut decoded = [0; 65];
chacha.process(&msg.onion_routing_packet.hop_data[0..65], &mut decoded);
- match msgs::OnionHopData::decode(&decoded[..]) {
+ match msgs::OnionHopData::read(&mut Cursor::new(&decoded[..])) {
Err(err) => {
let error_code = match err {
msgs::DecodeError::UnknownRealmByte => 0x4000 | 1,
onion_packet: None,
payment_hash: msg.payment_hash.clone(),
short_channel_id: 0,
- prev_short_channel_id: 0,
+ incoming_shared_secret: shared_secret.clone(),
amt_to_forward: next_hop_data.data.amt_to_forward,
outgoing_cltv_value: next_hop_data.data.outgoing_cltv_value,
})
onion_packet: Some(outgoing_packet),
payment_hash: msg.payment_hash.clone(),
short_channel_id: next_hop_data.data.short_channel_id,
- prev_short_channel_id: 0,
+ incoming_shared_secret: shared_secret.clone(),
amt_to_forward: next_hop_data.data.amt_to_forward,
outgoing_cltv_value: next_hop_data.data.outgoing_cltv_value,
})
}
}
- (pending_forward_info, Some(shared_secret), channel_state.unwrap())
+ (pending_forward_info, channel_state.unwrap())
}
/// only fails if the channel does not yet have an assigned short_id
/// payment") and prevent double-sends yourself.
/// See-also docs on Channel::send_htlc_and_commit.
/// May generate a SendHTLCs event on success, which should be relayed.
- pub fn send_payment(&self, route: Route, payment_hash: [u8; 32]) -> Result<(), HandleError> {
+ /// Raises APIError::RoutError when invalid route or forward parameter
+ /// (cltv_delta, fee, node public key) is specified
+ pub fn send_payment(&self, route: Route, payment_hash: [u8; 32]) -> Result<(), APIError> {
if route.hops.len() < 1 || route.hops.len() > 20 {
- return Err(HandleError{err: "Route didn't go anywhere/had bogus size", action: None});
+ return Err(APIError::RouteError{err: "Route didn't go anywhere/had bogus size"});
}
let our_node_id = self.get_our_node_id();
for (idx, hop) in route.hops.iter().enumerate() {
if idx != route.hops.len() - 1 && hop.pubkey == our_node_id {
- return Err(HandleError{err: "Route went through us but wasn't a simple rebalance loop to us", action: None});
+ return Err(APIError::RouteError{err: "Route went through us but wasn't a simple rebalance loop to us"});
}
}
let cur_height = self.latest_block_height.load(Ordering::Acquire) as u32 + 1;
- //TODO: This should return something other than HandleError, that's really intended for
- //p2p-returns only.
let onion_keys = secp_call!(ChannelManager::construct_onion_keys(&self.secp_ctx, &route, &session_priv),
- HandleError{err: "Pubkey along hop was maliciously selected", action: Some(msgs::ErrorAction::IgnoreError)});
+ APIError::RouteError{err: "Pubkey along hop was maliciously selected"});
let (onion_payloads, htlc_msat, htlc_cltv) = ChannelManager::build_onion_payloads(&route, cur_height)?;
- let onion_packet = ChannelManager::construct_onion_packet(onion_payloads, onion_keys, &payment_hash)?;
+ let onion_packet = ChannelManager::construct_onion_packet(onion_payloads, onion_keys, &payment_hash);
let (first_hop_node_id, (update_add, commitment_signed, chan_monitor)) = {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = channel_state_lock.borrow_parts();
let id = match channel_state.short_to_id.get(&route.hops.first().unwrap().short_channel_id) {
- None => return Err(HandleError{err: "No channel available with first hop!", action: None}),
- Some(id) => id.clone()
+ None => return Err(APIError::RouteError{err: "No channel available with first hop!"}),
+ Some(id) => id.clone(),
};
- let claimable_htlc_entry = channel_state.claimable_htlcs.entry(payment_hash.clone());
- if let hash_map::Entry::Occupied(_) = claimable_htlc_entry {
- return Err(HandleError{err: "Already had pending HTLC with the same payment_hash", action: None});
- }
-
let res = {
let chan = channel_state.by_id.get_mut(&id).unwrap();
if chan.get_their_node_id() != route.hops.first().unwrap().pubkey {
- return Err(HandleError{err: "Node ID mismatch on first hop!", action: None});
+ return Err(APIError::RouteError{err: "Node ID mismatch on first hop!"});
}
- chan.send_htlc_and_commit(htlc_msat, payment_hash, htlc_cltv, onion_packet)?
+ if !chan.is_live() {
+ return Err(APIError::RouteError{err: "Peer for first hop currently disconnected!"});
+ }
+ chan.send_htlc_and_commit(htlc_msat, payment_hash.clone(), htlc_cltv, HTLCSource::OutboundRoute {
+ route: route.clone(),
+ session_priv: session_priv.clone(),
+ }, onion_packet).map_err(|he| APIError::RouteError{err: he.err})?
};
let first_hop_node_id = route.hops.first().unwrap().pubkey;
- claimable_htlc_entry.or_insert(PendingOutboundHTLC::OutboundRoute {
- route,
- session_priv,
- });
-
match res {
Some(msgs) => (first_hop_node_id, msgs),
None => return Ok(()),
};
if let Err(_e) = self.monitor.add_update_monitor(chan_monitor.get_funding_txo().unwrap(), chan_monitor) {
- unimplemented!(); // maybe remove from claimable_htlcs?
+ unimplemented!();
}
let mut events = self.pending_events.lock().unwrap();
}
}; // Release channel lock for install_watch_outpoint call,
if let Err(_e) = self.monitor.add_update_monitor(chan_monitor.get_funding_txo().unwrap(), chan_monitor) {
- unimplemented!(); // maybe remove from claimable_htlcs?
+ unimplemented!();
}
add_pending_event!(events::Event::SendFundingCreated {
node_id: chan.get_their_node_id(),
return;
}
- for (short_chan_id, pending_forwards) in channel_state.forward_htlcs.drain() {
+ for (short_chan_id, mut pending_forwards) in channel_state.forward_htlcs.drain() {
if short_chan_id != 0 {
let forward_chan_id = match channel_state.short_to_id.get(&short_chan_id) {
Some(chan_id) => chan_id.clone(),
None => {
failed_forwards.reserve(pending_forwards.len());
- for forward_info in pending_forwards {
- failed_forwards.push((forward_info.payment_hash, 0x4000 | 10, None));
+ for HTLCForwardInfo { prev_short_channel_id, prev_htlc_id, forward_info } in pending_forwards.drain(..) {
+ let htlc_source = HTLCSource::PreviousHopData(HTLCPreviousHopData {
+ short_channel_id: prev_short_channel_id,
+ htlc_id: prev_htlc_id,
+ incoming_packet_shared_secret: forward_info.incoming_shared_secret,
+ });
+ failed_forwards.push((htlc_source, forward_info.payment_hash, 0x4000 | 10, None));
}
continue;
}
let forward_chan = &mut channel_state.by_id.get_mut(&forward_chan_id).unwrap();
let mut add_htlc_msgs = Vec::new();
- for forward_info in pending_forwards {
- match forward_chan.send_htlc(forward_info.amt_to_forward, forward_info.payment_hash, forward_info.outgoing_cltv_value, forward_info.onion_packet.unwrap()) {
+ for HTLCForwardInfo { prev_short_channel_id, prev_htlc_id, forward_info } in pending_forwards.drain(..) {
+ let htlc_source = HTLCSource::PreviousHopData(HTLCPreviousHopData {
+ short_channel_id: prev_short_channel_id,
+ htlc_id: prev_htlc_id,
+ incoming_packet_shared_secret: forward_info.incoming_shared_secret,
+ });
+ match forward_chan.send_htlc(forward_info.amt_to_forward, forward_info.payment_hash, forward_info.outgoing_cltv_value, htlc_source.clone(), forward_info.onion_packet.unwrap()) {
Err(_e) => {
let chan_update = self.get_channel_update(forward_chan).unwrap();
- failed_forwards.push((forward_info.payment_hash, 0x1000 | 7, Some(chan_update)));
+ failed_forwards.push((htlc_source, forward_info.payment_hash, 0x1000 | 7, Some(chan_update)));
continue;
},
Ok(update_add) => {
}));
}
} else {
- for forward_info in pending_forwards {
+ for HTLCForwardInfo { prev_short_channel_id, prev_htlc_id, forward_info } in pending_forwards.drain(..) {
+ let prev_hop_data = HTLCPreviousHopData {
+ short_channel_id: prev_short_channel_id,
+ htlc_id: prev_htlc_id,
+ incoming_packet_shared_secret: forward_info.incoming_shared_secret,
+ };
+ match channel_state.claimable_htlcs.entry(forward_info.payment_hash) {
+ hash_map::Entry::Occupied(mut entry) => entry.get_mut().push(prev_hop_data),
+ hash_map::Entry::Vacant(entry) => { entry.insert(vec![prev_hop_data]); },
+ };
new_events.push((None, events::Event::PaymentReceived {
payment_hash: forward_info.payment_hash,
amt: forward_info.amt_to_forward,
}
}
- for failed_forward in failed_forwards.drain(..) {
- match failed_forward.2 {
- None => self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &failed_forward.0, HTLCFailReason::Reason { failure_code: failed_forward.1, data: Vec::new() }),
- Some(chan_update) => self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &failed_forward.0, HTLCFailReason::Reason { failure_code: failed_forward.1, data: chan_update.encode_with_len() }),
+ for (htlc_source, payment_hash, failure_code, update) in failed_forwards.drain(..) {
+ match update {
+ None => self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source, &payment_hash, HTLCFailReason::Reason { failure_code, data: Vec::new() }),
+ Some(chan_update) => self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source, &payment_hash, HTLCFailReason::Reason { failure_code, data: chan_update.encode_with_len() }),
};
}
/// Indicates that the preimage for payment_hash is unknown after a PaymentReceived event.
pub fn fail_htlc_backwards(&self, payment_hash: &[u8; 32]) -> bool {
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 15, data: Vec::new() })
+ let mut channel_state = Some(self.channel_state.lock().unwrap());
+ let removed_source = channel_state.as_mut().unwrap().claimable_htlcs.remove(payment_hash);
+ if let Some(mut sources) = removed_source {
+ for htlc_with_hash in sources.drain(..) {
+ if channel_state.is_none() { channel_state = Some(self.channel_state.lock().unwrap()); }
+ self.fail_htlc_backwards_internal(channel_state.take().unwrap(), HTLCSource::PreviousHopData(htlc_with_hash), payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 15, data: Vec::new() });
+ }
+ true
+ } else { false }
}
/// Fails an HTLC backwards to the sender of it to us.
/// to fail and take the channel_state lock for each iteration (as we take ownership and may
/// drop it). In other words, no assumptions are made that entries in claimable_htlcs point to
/// still-available channels.
- fn fail_htlc_backwards_internal(&self, mut channel_state: MutexGuard<ChannelHolder>, payment_hash: &[u8; 32], onion_error: HTLCFailReason) -> bool {
- let mut pending_htlc = {
- match channel_state.claimable_htlcs.remove(payment_hash) {
- Some(pending_htlc) => pending_htlc,
- None => return false,
- }
- };
-
- match pending_htlc {
- PendingOutboundHTLC::CycledRoute { source_short_channel_id, incoming_packet_shared_secret, route, session_priv } => {
- channel_state.claimable_htlcs.insert(payment_hash.clone(), PendingOutboundHTLC::OutboundRoute {
- route,
- session_priv,
- });
- pending_htlc = PendingOutboundHTLC::IntermediaryHopData { source_short_channel_id, incoming_packet_shared_secret };
- },
- _ => {}
- }
-
- match pending_htlc {
- PendingOutboundHTLC::CycledRoute { .. } => unreachable!(),
- PendingOutboundHTLC::OutboundRoute { .. } => {
+ fn fail_htlc_backwards_internal(&self, mut channel_state: MutexGuard<ChannelHolder>, source: HTLCSource, payment_hash: &[u8; 32], onion_error: HTLCFailReason) {
+ match source {
+ HTLCSource::OutboundRoute { .. } => {
mem::drop(channel_state);
let mut pending_events = self.pending_events.lock().unwrap();
pending_events.push(events::Event::PaymentFailed {
payment_hash: payment_hash.clone()
});
- false
},
- PendingOutboundHTLC::IntermediaryHopData { source_short_channel_id, incoming_packet_shared_secret } => {
+ HTLCSource::PreviousHopData(HTLCPreviousHopData { short_channel_id, htlc_id, incoming_packet_shared_secret }) => {
let err_packet = match onion_error {
HTLCFailReason::Reason { failure_code, data } => {
let packet = ChannelManager::build_failure_packet(&incoming_packet_shared_secret, failure_code, &data[..]).encode();
};
let (node_id, fail_msgs) = {
- let chan_id = match channel_state.short_to_id.get(&source_short_channel_id) {
+ let chan_id = match channel_state.short_to_id.get(&short_channel_id) {
Some(chan_id) => chan_id.clone(),
- None => return false
+ None => return
};
let chan = channel_state.by_id.get_mut(&chan_id).unwrap();
- match chan.get_update_fail_htlc_and_commit(payment_hash, err_packet) {
+ match chan.get_update_fail_htlc_and_commit(htlc_id, err_packet) {
Ok(msg) => (chan.get_their_node_id(), msg),
Err(_e) => {
//TODO: Do something with e?
- return false;
+ return;
},
}
};
},
None => {},
}
-
- true
},
}
}
/// should probably kick the net layer to go send messages if this returns true!
/// May panic if called except in response to a PaymentReceived event.
pub fn claim_funds(&self, payment_preimage: [u8; 32]) -> bool {
- self.claim_funds_internal(payment_preimage, true)
- }
- fn claim_funds_internal(&self, payment_preimage: [u8; 32], from_user: bool) -> bool {
let mut sha = Sha256::new();
sha.input(&payment_preimage);
let mut payment_hash = [0; 32];
sha.result(&mut payment_hash);
- let mut channel_state = self.channel_state.lock().unwrap();
- let mut pending_htlc = {
- match channel_state.claimable_htlcs.remove(&payment_hash) {
- Some(pending_htlc) => pending_htlc,
- None => return false,
+ let mut channel_state = Some(self.channel_state.lock().unwrap());
+ let removed_source = channel_state.as_mut().unwrap().claimable_htlcs.remove(&payment_hash);
+ if let Some(mut sources) = removed_source {
+ for htlc_with_hash in sources.drain(..) {
+ if channel_state.is_none() { channel_state = Some(self.channel_state.lock().unwrap()); }
+ self.claim_funds_internal(channel_state.take().unwrap(), HTLCSource::PreviousHopData(htlc_with_hash), payment_preimage);
}
- };
-
- match pending_htlc {
- PendingOutboundHTLC::CycledRoute { source_short_channel_id, incoming_packet_shared_secret, route, session_priv } => {
- if from_user { // This was the end hop back to us
- pending_htlc = PendingOutboundHTLC::IntermediaryHopData { source_short_channel_id, incoming_packet_shared_secret };
- channel_state.claimable_htlcs.insert(payment_hash, PendingOutboundHTLC::OutboundRoute { route, session_priv });
- } else { // This came from the first upstream node
- // Bank error in our favor! Maybe we should tell the user this somehow???
- pending_htlc = PendingOutboundHTLC::OutboundRoute { route, session_priv };
- channel_state.claimable_htlcs.insert(payment_hash, PendingOutboundHTLC::IntermediaryHopData { source_short_channel_id, incoming_packet_shared_secret });
- }
- },
- _ => {},
- }
-
- match pending_htlc {
- PendingOutboundHTLC::CycledRoute { .. } => unreachable!(),
- PendingOutboundHTLC::OutboundRoute { .. } => {
- if from_user {
- panic!("Called claim_funds with a preimage for an outgoing payment. There is nothing we can do with this, and something is seriously wrong if you knew this...");
- }
+ true
+ } else { false }
+ }
+ fn claim_funds_internal(&self, mut channel_state: MutexGuard<ChannelHolder>, source: HTLCSource, payment_preimage: [u8; 32]) {
+ match source {
+ HTLCSource::OutboundRoute { .. } => {
mem::drop(channel_state);
let mut pending_events = self.pending_events.lock().unwrap();
pending_events.push(events::Event::PaymentSent {
payment_preimage
});
- false
},
- PendingOutboundHTLC::IntermediaryHopData { source_short_channel_id, .. } => {
+ HTLCSource::PreviousHopData(HTLCPreviousHopData { short_channel_id, htlc_id, .. }) => {
+ //TODO: Delay the claimed_funds relaying just like we do outbound relay!
let (node_id, fulfill_msgs) = {
- let chan_id = match channel_state.short_to_id.get(&source_short_channel_id) {
+ let chan_id = match channel_state.short_to_id.get(&short_channel_id) {
Some(chan_id) => chan_id.clone(),
None => {
// TODO: There is probably a channel manager somewhere that needs to
// learn the preimage as the channel already hit the chain and that's
// why its missing.
- return false
+ return
}
};
let chan = channel_state.by_id.get_mut(&chan_id).unwrap();
- match chan.get_update_fulfill_htlc_and_commit(payment_preimage) {
+ match chan.get_update_fulfill_htlc_and_commit(htlc_id, payment_preimage) {
Ok(msg) => (chan.get_their_node_id(), msg),
Err(_e) => {
// TODO: There is probably a channel manager somewhere that needs to
// learn the preimage as the channel may be about to hit the chain.
//TODO: Do something with e?
- return false;
+ return
},
}
};
}
});
}
- true
},
}
}
}
fn internal_shutdown(&self, their_node_id: &PublicKey, msg: &msgs::Shutdown) -> Result<(Option<msgs::Shutdown>, Option<msgs::ClosingSigned>), MsgHandleErrInternal> {
- let (res, chan_option) = {
+ let (mut res, chan_option) = {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = channel_state_lock.borrow_parts();
hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel", msg.channel_id))
}
};
- for payment_hash in res.2 {
+ for htlc_source in res.2.drain(..) {
// unknown_next_peer...I dunno who that is anymore....
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: Vec::new() });
+ self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source.0, &htlc_source.1, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: Vec::new() });
}
if let Some(chan) = chan_option {
if let Ok(update) = self.get_channel_update(&chan) {
Ok(res.0)
}
+ fn internal_update_add_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateAddHTLC) -> Result<(), MsgHandleErrInternal> {
+ //TODO: BOLT 4 points out a specific attack where a peer may re-send an onion packet and
+ //determine the state of the payment based on our response/if we forward anything/the time
+ //we take to respond. We should take care to avoid allowing such an attack.
+ //
+ //TODO: There exists a further attack where a node may garble the onion data, forward it to
+ //us repeatedly garbled in different ways, and compare our error messages, which are
+ //encrypted with the same key. Its not immediately obvious how to usefully exploit that,
+ //but we should prevent it anyway.
+
+ let (pending_forward_info, mut channel_state_lock) = self.decode_update_add_htlc_onion(msg);
+ let channel_state = channel_state_lock.borrow_parts();
+
+ match channel_state.by_id.get_mut(&msg.channel_id) {
+ Some(chan) => {
+ if chan.get_their_node_id() != *their_node_id {
+ //TODO: here MsgHandleErrInternal, #153 case
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!", msg.channel_id));
+ }
+ if !chan.is_usable() {
+ return Err(MsgHandleErrInternal::from_no_close(HandleError{err: "Channel not yet available for receiving HTLCs", action: Some(msgs::ErrorAction::IgnoreError)}));
+ }
+ chan.update_add_htlc(&msg, pending_forward_info).map_err(|e| MsgHandleErrInternal::from_maybe_close(e))
+ },
+ None => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel", msg.channel_id))
+ }
+ }
+
+ fn internal_update_fulfill_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) -> Result<(), MsgHandleErrInternal> {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ let htlc_source = match channel_state.by_id.get_mut(&msg.channel_id) {
+ Some(chan) => {
+ if chan.get_their_node_id() != *their_node_id {
+ //TODO: here and below MsgHandleErrInternal, #153 case
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!", msg.channel_id));
+ }
+ chan.update_fulfill_htlc(&msg).map_err(|e| MsgHandleErrInternal::from_maybe_close(e))?.clone()
+ },
+ None => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel", msg.channel_id))
+ };
+ self.claim_funds_internal(channel_state, htlc_source, msg.payment_preimage.clone());
+ Ok(())
+ }
+
+ fn internal_update_fail_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) -> Result<Option<msgs::HTLCFailChannelUpdate>, MsgHandleErrInternal> {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ let htlc_source = match channel_state.by_id.get_mut(&msg.channel_id) {
+ Some(chan) => {
+ if chan.get_their_node_id() != *their_node_id {
+ //TODO: here and below MsgHandleErrInternal, #153 case
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!", msg.channel_id));
+ }
+ chan.update_fail_htlc(&msg, HTLCFailReason::ErrorPacket { err: msg.reason.clone() }).map_err(|e| MsgHandleErrInternal::from_maybe_close(e))
+ },
+ None => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel", msg.channel_id))
+ }?;
+
+ match htlc_source {
+ &HTLCSource::OutboundRoute { ref route, ref session_priv, .. } => {
+ // Handle packed channel/node updates for passing back for the route handler
+ let mut packet_decrypted = msg.reason.data.clone();
+ let mut res = None;
+ Self::construct_onion_keys_callback(&self.secp_ctx, &route, &session_priv, |shared_secret, _, _, route_hop| {
+ if res.is_some() { return; }
+
+ let ammag = ChannelManager::gen_ammag_from_shared_secret(&shared_secret);
+
+ let mut decryption_tmp = Vec::with_capacity(packet_decrypted.len());
+ decryption_tmp.resize(packet_decrypted.len(), 0);
+ let mut chacha = ChaCha20::new(&ammag, &[0u8; 8]);
+ chacha.process(&packet_decrypted, &mut decryption_tmp[..]);
+ packet_decrypted = decryption_tmp;
+
+ if let Ok(err_packet) = msgs::DecodedOnionErrorPacket::read(&mut Cursor::new(&packet_decrypted)) {
+ if err_packet.failuremsg.len() >= 2 {
+ let um = ChannelManager::gen_um_from_shared_secret(&shared_secret);
+
+ let mut hmac = Hmac::new(Sha256::new(), &um);
+ hmac.input(&err_packet.encode()[32..]);
+ let mut calc_tag = [0u8; 32];
+ hmac.raw_result(&mut calc_tag);
+ if crypto::util::fixed_time_eq(&calc_tag, &err_packet.hmac) {
+ const UNKNOWN_CHAN: u16 = 0x4000|10;
+ const TEMP_CHAN_FAILURE: u16 = 0x4000|7;
+ match byte_utils::slice_to_be16(&err_packet.failuremsg[0..2]) {
+ TEMP_CHAN_FAILURE => {
+ if err_packet.failuremsg.len() >= 4 {
+ let update_len = byte_utils::slice_to_be16(&err_packet.failuremsg[2..4]) as usize;
+ if err_packet.failuremsg.len() >= 4 + update_len {
+ if let Ok(chan_update) = msgs::ChannelUpdate::read(&mut Cursor::new(&err_packet.failuremsg[4..4 + update_len])) {
+ res = Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage {
+ msg: chan_update,
+ });
+ }
+ }
+ }
+ },
+ UNKNOWN_CHAN => {
+ // No such next-hop. We know this came from the
+ // current node as the HMAC validated.
+ res = Some(msgs::HTLCFailChannelUpdate::ChannelClosed {
+ short_channel_id: route_hop.short_channel_id
+ });
+ },
+ _ => {}, //TODO: Enumerate all of these!
+ }
+ }
+ }
+ }
+ }).unwrap();
+ Ok(res)
+ },
+ _ => { Ok(None) },
+ }
+ }
+
+ fn internal_update_fail_malformed_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) -> Result<(), MsgHandleErrInternal> {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.get_mut(&msg.channel_id) {
+ Some(chan) => {
+ if chan.get_their_node_id() != *their_node_id {
+ //TODO: here and below MsgHandleErrInternal, #153 case
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!", msg.channel_id));
+ }
+ chan.update_fail_malformed_htlc(&msg, HTLCFailReason::Reason { failure_code: msg.failure_code, data: Vec::new() }).map_err(|e| MsgHandleErrInternal::from_maybe_close(e))?;
+ Ok(())
+ },
+ None => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel", msg.channel_id))
+ }
+ }
+
+ fn internal_commitment_signed(&self, their_node_id: &PublicKey, msg: &msgs::CommitmentSigned) -> Result<(msgs::RevokeAndACK, Option<msgs::CommitmentSigned>), MsgHandleErrInternal> {
+ let (revoke_and_ack, commitment_signed, chan_monitor) = {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.get_mut(&msg.channel_id) {
+ Some(chan) => {
+ if chan.get_their_node_id() != *their_node_id {
+ //TODO: here and below MsgHandleErrInternal, #153 case
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!", msg.channel_id));
+ }
+ chan.commitment_signed(&msg).map_err(|e| MsgHandleErrInternal::from_maybe_close(e))?
+ },
+ None => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel", msg.channel_id))
+ }
+ };
+ if let Err(_e) = self.monitor.add_update_monitor(chan_monitor.get_funding_txo().unwrap(), chan_monitor) {
+ unimplemented!();
+ }
+
+ Ok((revoke_and_ack, commitment_signed))
+ }
+
+ fn internal_revoke_and_ack(&self, their_node_id: &PublicKey, msg: &msgs::RevokeAndACK) -> Result<Option<msgs::CommitmentUpdate>, MsgHandleErrInternal> {
+ let ((res, mut pending_forwards, mut pending_failures, chan_monitor), short_channel_id) = {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.get_mut(&msg.channel_id) {
+ Some(chan) => {
+ if chan.get_their_node_id() != *their_node_id {
+ //TODO: here and below MsgHandleErrInternal, #153 case
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!", msg.channel_id));
+ }
+ (chan.revoke_and_ack(&msg).map_err(|e| MsgHandleErrInternal::from_maybe_close(e))?, chan.get_short_channel_id().expect("RAA should only work on a short-id-available channel"))
+ },
+ None => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel", msg.channel_id))
+ }
+ };
+ if let Err(_e) = self.monitor.add_update_monitor(chan_monitor.get_funding_txo().unwrap(), chan_monitor) {
+ unimplemented!();
+ }
+ for failure in pending_failures.drain(..) {
+ self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), failure.0, &failure.1, failure.2);
+ }
+
+ let mut forward_event = None;
+ if !pending_forwards.is_empty() {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ if channel_state.forward_htlcs.is_empty() {
+ forward_event = Some(Instant::now() + Duration::from_millis(((rng::rand_f32() * 4.0 + 1.0) * MIN_HTLC_RELAY_HOLDING_CELL_MILLIS as f32) as u64));
+ channel_state.next_forward = forward_event.unwrap();
+ }
+ for (forward_info, prev_htlc_id) in pending_forwards.drain(..) {
+ match channel_state.forward_htlcs.entry(forward_info.short_channel_id) {
+ hash_map::Entry::Occupied(mut entry) => {
+ entry.get_mut().push(HTLCForwardInfo { prev_short_channel_id: short_channel_id, prev_htlc_id, forward_info });
+ },
+ hash_map::Entry::Vacant(entry) => {
+ entry.insert(vec!(HTLCForwardInfo { prev_short_channel_id: short_channel_id, prev_htlc_id, forward_info }));
+ }
+ }
+ }
+ }
+ match forward_event {
+ Some(time) => {
+ let mut pending_events = self.pending_events.lock().unwrap();
+ pending_events.push(events::Event::PendingHTLCsForwardable {
+ time_forwardable: time
+ });
+ }
+ None => {},
+ }
+
+ Ok(res)
+ }
+
+ fn internal_update_fee(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFee) -> Result<(), MsgHandleErrInternal> {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.get_mut(&msg.channel_id) {
+ Some(chan) => {
+ if chan.get_their_node_id() != *their_node_id {
+ //TODO: here and below MsgHandleErrInternal, #153 case
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!", msg.channel_id));
+ }
+ chan.update_fee(&*self.fee_estimator, &msg).map_err(|e| MsgHandleErrInternal::from_maybe_close(e))
+ },
+ None => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel", msg.channel_id))
+ }
+ }
+
fn internal_announcement_signatures(&self, their_node_id: &PublicKey, msg: &msgs::AnnouncementSignatures) -> Result<(), MsgHandleErrInternal> {
let (chan_announcement, chan_update) = {
let mut channel_state = self.channel_state.lock().unwrap();
Ok(())
}
-
+ fn internal_channel_reestablish(&self, their_node_id: &PublicKey, msg: &msgs::ChannelReestablish) -> Result<(Option<msgs::FundingLocked>, Option<msgs::RevokeAndACK>, Option<msgs::CommitmentUpdate>), MsgHandleErrInternal> {
+ let (res, chan_monitor) = {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.get_mut(&msg.channel_id) {
+ Some(chan) => {
+ if chan.get_their_node_id() != *their_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!", msg.channel_id));
+ }
+ let (funding_locked, revoke_and_ack, commitment_update, channel_monitor) = chan.channel_reestablish(msg).map_err(|e| MsgHandleErrInternal::from_maybe_close(e))?;
+ (Ok((funding_locked, revoke_and_ack, commitment_update)), channel_monitor)
+ },
+ None => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel", msg.channel_id))
+ }
+ };
+ if let Some(monitor) = chan_monitor {
+ if let Err(_e) = self.monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor) {
+ unimplemented!();
+ }
+ }
+ res
+ }
}
impl events::EventsProvider for ChannelManager {
}
fn handle_update_add_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateAddHTLC) -> Result<(), msgs::HandleError> {
- //TODO: BOLT 4 points out a specific attack where a peer may re-send an onion packet and
- //determine the state of the payment based on our response/if we forward anything/the time
- //we take to respond. We should take care to avoid allowing such an attack.
- //
- //TODO: There exists a further attack where a node may garble the onion data, forward it to
- //us repeatedly garbled in different ways, and compare our error messages, which are
- //encrypted with the same key. Its not immediately obvious how to usefully exploit that,
- //but we should prevent it anyway.
-
- let (mut pending_forward_info, shared_secret, mut channel_state_lock) = self.decode_update_add_htlc_onion(msg);
- let channel_state = channel_state_lock.borrow_parts();
-
- let claimable_htlcs_entry = channel_state.claimable_htlcs.entry(msg.payment_hash.clone());
-
- // We dont correctly handle payments that route through us twice on their way to their
- // destination. That's OK since those nodes are probably busted or trying to do network
- // mapping through repeated loops. In either case, we want them to stop talking to us, so
- // we send permanent_node_failure.
- let mut will_forward = false;
- if let PendingHTLCStatus::Forward(PendingForwardHTLCInfo { short_channel_id, .. }) = pending_forward_info {
- if let &hash_map::Entry::Occupied(ref e) = &claimable_htlcs_entry {
- let mut acceptable_cycle = false;
- if let &PendingOutboundHTLC::OutboundRoute { .. } = e.get() {
- acceptable_cycle = short_channel_id == 0;
- }
- if !acceptable_cycle {
- log_info!(self, "Failed to accept incoming HTLC: Payment looped through us twice");
- pending_forward_info = PendingHTLCStatus::Fail(HTLCFailureMsg::Relay(msgs::UpdateFailHTLC {
- channel_id: msg.channel_id,
- htlc_id: msg.htlc_id,
- reason: ChannelManager::build_first_hop_failure_packet(&shared_secret.unwrap(), 0x4000 | 0x2000 | 2, &[0;0]),
- }));
- } else {
- will_forward = true;
- }
- } else {
- will_forward = true;
- }
- }
-
- let (source_short_channel_id, res) = match channel_state.by_id.get_mut(&msg.channel_id) {
- Some(chan) => {
- if chan.get_their_node_id() != *their_node_id {
- return Err(HandleError{err: "Got a message for a channel from the wrong node!", action: None})
- }
- if !chan.is_usable() {
- return Err(HandleError{err: "Channel not yet available for receiving HTLCs", action: None});
- }
- let short_channel_id = chan.get_short_channel_id().unwrap();
- if let PendingHTLCStatus::Forward(ref mut forward_info) = pending_forward_info {
- forward_info.prev_short_channel_id = short_channel_id;
- }
- (short_channel_id, chan.update_add_htlc(&msg, pending_forward_info)?)
- },
- None => return Err(HandleError{err: "Failed to find corresponding channel", action: None}),
- };
-
- if will_forward {
- match claimable_htlcs_entry {
- hash_map::Entry::Occupied(mut e) => {
- let outbound_route = e.get_mut();
- let (route, session_priv) = match outbound_route {
- &mut PendingOutboundHTLC::OutboundRoute { ref route, ref session_priv } => {
- (route.clone(), session_priv.clone())
- },
- _ => unreachable!(),
- };
- *outbound_route = PendingOutboundHTLC::CycledRoute {
- source_short_channel_id,
- incoming_packet_shared_secret: shared_secret.unwrap(),
- route,
- session_priv,
- };
- },
- hash_map::Entry::Vacant(e) => {
- e.insert(PendingOutboundHTLC::IntermediaryHopData {
- source_short_channel_id,
- incoming_packet_shared_secret: shared_secret.unwrap(),
- });
- }
- }
- }
-
- Ok(res)
+ handle_error!(self, self.internal_update_add_htlc(their_node_id, msg), their_node_id)
}
fn handle_update_fulfill_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) -> Result<(), HandleError> {
- //TODO: Delay the claimed_funds relaying just like we do outbound relay!
- // Claim funds first, cause we don't really care if the channel we received the message on
- // is broken, we may have enough info to get our own money!
- self.claim_funds_internal(msg.payment_preimage.clone(), false);
-
- let mut channel_state = self.channel_state.lock().unwrap();
- match channel_state.by_id.get_mut(&msg.channel_id) {
- Some(chan) => {
- if chan.get_their_node_id() != *their_node_id {
- return Err(HandleError{err: "Got a message for a channel from the wrong node!", action: None})
- }
- chan.update_fulfill_htlc(&msg)
- },
- None => return Err(HandleError{err: "Failed to find corresponding channel", action: None})
- }
- }
+ handle_error!(self, self.internal_update_fulfill_htlc(their_node_id, msg), their_node_id)
+ }
fn handle_update_fail_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) -> Result<Option<msgs::HTLCFailChannelUpdate>, HandleError> {
- let mut channel_state = self.channel_state.lock().unwrap();
- let payment_hash = match channel_state.by_id.get_mut(&msg.channel_id) {
- Some(chan) => {
- if chan.get_their_node_id() != *their_node_id {
- return Err(HandleError{err: "Got a message for a channel from the wrong node!", action: None})
- }
- chan.update_fail_htlc(&msg, HTLCFailReason::ErrorPacket { err: msg.reason.clone() })
- },
- None => return Err(HandleError{err: "Failed to find corresponding channel", action: None})
- }?;
-
- if let Some(pending_htlc) = channel_state.claimable_htlcs.get(&payment_hash) {
- match pending_htlc {
- &PendingOutboundHTLC::OutboundRoute { ref route, ref session_priv } => {
- // Handle packed channel/node updates for passing back for the route handler
- let mut packet_decrypted = msg.reason.data.clone();
- let mut res = None;
- Self::construct_onion_keys_callback(&self.secp_ctx, &route, &session_priv, |shared_secret, _, _, route_hop| {
- if res.is_some() { return; }
-
- let ammag = ChannelManager::gen_ammag_from_shared_secret(&shared_secret);
-
- let mut decryption_tmp = Vec::with_capacity(packet_decrypted.len());
- decryption_tmp.resize(packet_decrypted.len(), 0);
- let mut chacha = ChaCha20::new(&ammag, &[0u8; 8]);
- chacha.process(&packet_decrypted, &mut decryption_tmp[..]);
- packet_decrypted = decryption_tmp;
-
- if let Ok(err_packet) = msgs::DecodedOnionErrorPacket::decode(&packet_decrypted) {
- if err_packet.failuremsg.len() >= 2 {
- let um = ChannelManager::gen_um_from_shared_secret(&shared_secret);
-
- let mut hmac = Hmac::new(Sha256::new(), &um);
- hmac.input(&err_packet.encode()[32..]);
- let mut calc_tag = [0u8; 32];
- hmac.raw_result(&mut calc_tag);
- if crypto::util::fixed_time_eq(&calc_tag, &err_packet.hmac) {
- const UNKNOWN_CHAN: u16 = 0x4000|10;
- const TEMP_CHAN_FAILURE: u16 = 0x4000|7;
- match byte_utils::slice_to_be16(&err_packet.failuremsg[0..2]) {
- TEMP_CHAN_FAILURE => {
- if err_packet.failuremsg.len() >= 4 {
- let update_len = byte_utils::slice_to_be16(&err_packet.failuremsg[2..4]) as usize;
- if err_packet.failuremsg.len() >= 4 + update_len {
- if let Ok(chan_update) = msgs::ChannelUpdate::decode(&err_packet.failuremsg[4..4 + update_len]) {
- res = Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage {
- msg: chan_update,
- });
- }
- }
- }
- },
- UNKNOWN_CHAN => {
- // No such next-hop. We know this came from the
- // current node as the HMAC validated.
- res = Some(msgs::HTLCFailChannelUpdate::ChannelClosed {
- short_channel_id: route_hop.short_channel_id
- });
- },
- _ => {}, //TODO: Enumerate all of these!
- }
- }
- }
- }
- }).unwrap();
- Ok(res)
- },
- _ => { Ok(None) },
- }
- } else {
- Ok(None)
- }
+ handle_error!(self, self.internal_update_fail_htlc(their_node_id, msg), their_node_id)
}
fn handle_update_fail_malformed_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) -> Result<(), HandleError> {
- let mut channel_state = self.channel_state.lock().unwrap();
- match channel_state.by_id.get_mut(&msg.channel_id) {
- Some(chan) => {
- if chan.get_their_node_id() != *their_node_id {
- return Err(HandleError{err: "Got a message for a channel from the wrong node!", action: None})
- }
- chan.update_fail_malformed_htlc(&msg, HTLCFailReason::Reason { failure_code: msg.failure_code, data: Vec::new() })
- },
- None => return Err(HandleError{err: "Failed to find corresponding channel", action: None})
- }
+ handle_error!(self, self.internal_update_fail_malformed_htlc(their_node_id, msg), their_node_id)
}
fn handle_commitment_signed(&self, their_node_id: &PublicKey, msg: &msgs::CommitmentSigned) -> Result<(msgs::RevokeAndACK, Option<msgs::CommitmentSigned>), HandleError> {
- let (revoke_and_ack, commitment_signed, chan_monitor) = {
- let mut channel_state = self.channel_state.lock().unwrap();
- match channel_state.by_id.get_mut(&msg.channel_id) {
- Some(chan) => {
- if chan.get_their_node_id() != *their_node_id {
- return Err(HandleError{err: "Got a message for a channel from the wrong node!", action: None})
- }
- chan.commitment_signed(&msg)?
- },
- None => return Err(HandleError{err: "Failed to find corresponding channel", action: None})
- }
- };
- if let Err(_e) = self.monitor.add_update_monitor(chan_monitor.get_funding_txo().unwrap(), chan_monitor) {
- unimplemented!();
- }
-
- Ok((revoke_and_ack, commitment_signed))
+ handle_error!(self, self.internal_commitment_signed(their_node_id, msg), their_node_id)
}
fn handle_revoke_and_ack(&self, their_node_id: &PublicKey, msg: &msgs::RevokeAndACK) -> Result<Option<msgs::CommitmentUpdate>, HandleError> {
- let (res, mut pending_forwards, mut pending_failures, chan_monitor) = {
- let mut channel_state = self.channel_state.lock().unwrap();
- match channel_state.by_id.get_mut(&msg.channel_id) {
- Some(chan) => {
- if chan.get_their_node_id() != *their_node_id {
- return Err(HandleError{err: "Got a message for a channel from the wrong node!", action: None})
- }
- chan.revoke_and_ack(&msg)?
- },
- None => return Err(HandleError{err: "Failed to find corresponding channel", action: None})
- }
- };
- if let Err(_e) = self.monitor.add_update_monitor(chan_monitor.get_funding_txo().unwrap(), chan_monitor) {
- unimplemented!();
- }
- for failure in pending_failures.drain(..) {
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &failure.0, failure.1);
- }
-
- let mut forward_event = None;
- if !pending_forwards.is_empty() {
- let mut channel_state = self.channel_state.lock().unwrap();
- if channel_state.forward_htlcs.is_empty() {
- forward_event = Some(Instant::now() + Duration::from_millis(((rng::rand_f32() * 4.0 + 1.0) * MIN_HTLC_RELAY_HOLDING_CELL_MILLIS as f32) as u64));
- channel_state.next_forward = forward_event.unwrap();
- }
- for forward_info in pending_forwards.drain(..) {
- match channel_state.forward_htlcs.entry(forward_info.short_channel_id) {
- hash_map::Entry::Occupied(mut entry) => {
- entry.get_mut().push(forward_info);
- },
- hash_map::Entry::Vacant(entry) => {
- entry.insert(vec!(forward_info));
- }
- }
- }
- }
- match forward_event {
- Some(time) => {
- let mut pending_events = self.pending_events.lock().unwrap();
- pending_events.push(events::Event::PendingHTLCsForwardable {
- time_forwardable: time
- });
- }
- None => {},
- }
-
- Ok(res)
+ handle_error!(self, self.internal_revoke_and_ack(their_node_id, msg), their_node_id)
}
fn handle_update_fee(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFee) -> Result<(), HandleError> {
- let mut channel_state = self.channel_state.lock().unwrap();
- match channel_state.by_id.get_mut(&msg.channel_id) {
- Some(chan) => {
- if chan.get_their_node_id() != *their_node_id {
- return Err(HandleError{err: "Got a message for a channel from the wrong node!", action: None})
- }
- chan.update_fee(&*self.fee_estimator, &msg)
- },
- None => return Err(HandleError{err: "Failed to find corresponding channel", action: None})
- }
+ handle_error!(self, self.internal_update_fee(their_node_id, msg), their_node_id)
}
fn handle_announcement_signatures(&self, their_node_id: &PublicKey, msg: &msgs::AnnouncementSignatures) -> Result<(), HandleError> {
handle_error!(self, self.internal_announcement_signatures(their_node_id, msg), their_node_id)
}
+ fn handle_channel_reestablish(&self, their_node_id: &PublicKey, msg: &msgs::ChannelReestablish) -> Result<(Option<msgs::FundingLocked>, Option<msgs::RevokeAndACK>, Option<msgs::CommitmentUpdate>), HandleError> {
+ handle_error!(self, self.internal_channel_reestablish(their_node_id, msg), their_node_id)
+ }
+
fn peer_disconnected(&self, their_node_id: &PublicKey, no_connection_possible: bool) {
let mut new_events = Vec::new();
let mut failed_channels = Vec::new();
+ let mut failed_payments = Vec::new();
{
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = channel_state_lock.borrow_parts();
}
});
} else {
- for chan in channel_state.by_id {
- if chan.1.get_their_node_id() == *their_node_id {
- //TODO: mark channel disabled (and maybe announce such after a timeout). Also
- //fail and wipe any uncommitted outbound HTLCs as those are considered after
- //reconnect.
+ channel_state.by_id.retain(|_, chan| {
+ if chan.get_their_node_id() == *their_node_id {
+ //TODO: mark channel disabled (and maybe announce such after a timeout).
+ let failed_adds = chan.remove_uncommitted_htlcs_and_mark_paused();
+ if !failed_adds.is_empty() {
+ let chan_update = self.get_channel_update(&chan).map(|u| u.encode_with_len()).unwrap(); // Cannot add/recv HTLCs before we have a short_id so unwrap is safe
+ failed_payments.push((chan_update, failed_adds));
+ }
+ if chan.is_shutdown() {
+ if let Some(short_id) = chan.get_short_channel_id() {
+ short_to_id.remove(&short_id);
+ }
+ return false;
+ }
}
- }
+ true
+ })
}
}
for failure in failed_channels.drain(..) {
pending_events.push(event);
}
}
+ for (chan_update, mut htlc_sources) in failed_payments {
+ for (htlc_source, payment_hash) in htlc_sources.drain(..) {
+ self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source, &payment_hash, HTLCFailReason::Reason { failure_code: 0x1000 | 7, data: chan_update.clone() });
+ }
+ }
+ }
+
+ fn peer_connected(&self, their_node_id: &PublicKey) -> Vec<msgs::ChannelReestablish> {
+ let mut res = Vec::new();
+ let mut channel_state = self.channel_state.lock().unwrap();
+ channel_state.by_id.retain(|_, chan| {
+ if chan.get_their_node_id() == *their_node_id {
+ if !chan.have_received_message() {
+ // If we created this (outbound) channel while we were disconnected from the
+ // peer we probably failed to send the open_channel message, which is now
+ // lost. We can't have had anything pending related to this channel, so we just
+ // drop it.
+ false
+ } else {
+ res.push(chan.get_channel_reestablish());
+ true
+ }
+ } else { true }
+ });
+ //TODO: Also re-broadcast announcement_signatures
+ res
}
fn handle_error(&self, their_node_id: &PublicKey, msg: &msgs::ErrorMessage) {
use ln::channelmanager::{ChannelManager,OnionKeys};
use ln::router::{Route, RouteHop, Router};
use ln::msgs;
- use ln::msgs::{MsgEncodable,ChannelMessageHandler,RoutingMessageHandler};
+ use ln::msgs::{ChannelMessageHandler,RoutingMessageHandler};
use util::test_utils;
use util::events::{Event, EventsProvider};
+ use util::errors::APIError;
use util::logger::Logger;
+ use util::ser::Writeable;
use bitcoin::util::hash::Sha256dHash;
use bitcoin::blockdata::block::{Block, BlockHeader};
use rand::{thread_rng,Rng};
+ use std::cell::RefCell;
use std::collections::HashMap;
use std::default::Default;
+ use std::rc::Rc;
use std::sync::{Arc, Mutex};
use std::time::Instant;
use std::mem;
},
);
- let packet = ChannelManager::construct_onion_packet(payloads, onion_keys, &[0x42; 32]).unwrap();
+ let packet = ChannelManager::construct_onion_packet(payloads, onion_keys, &[0x42; 32]);
// Just check the final packet encoding, as it includes all the per-hop vectors in it
// anyway...
assert_eq!(packet.encode(), hex::decode("0002eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f283686619e5f14350c2a76fc232b5e46d421e9615471ab9e0bc887beff8c95fdb878f7b3a716a996c7845c93d90e4ecbb9bde4ece2f69425c99e4bc820e44485455f135edc0d10f7d61ab590531cf08000179a333a347f8b4072f216400406bdf3bf038659793d4a1fd7b246979e3150a0a4cb052c9ec69acf0f48c3d39cd55675fe717cb7d80ce721caad69320c3a469a202f1e468c67eaf7a7cd8226d0fd32f7b48084dca885d56047694762b67021713ca673929c163ec36e04e40ca8e1c6d17569419d3039d9a1ec866abe044a9ad635778b961fc0776dc832b3a451bd5d35072d2269cf9b040f6b7a7dad84fb114ed413b1426cb96ceaf83825665ed5a1d002c1687f92465b49ed4c7f0218ff8c6c7dd7221d589c65b3b9aaa71a41484b122846c7c7b57e02e679ea8469b70e14fe4f70fee4d87b910cf144be6fe48eef24da475c0b0bcc6565ae82cd3f4e3b24c76eaa5616c6111343306ab35c1fe5ca4a77c0e314ed7dba39d6f1e0de791719c241a939cc493bea2bae1c1e932679ea94d29084278513c77b899cc98059d06a27d171b0dbdf6bee13ddc4fc17a0c4d2827d488436b57baa167544138ca2e64a11b43ac8a06cd0c2fba2d4d900ed2d9205305e2d7383cc98dacb078133de5f6fb6bed2ef26ba92cea28aafc3b9948dd9ae5559e8bd6920b8cea462aa445ca6a95e0e7ba52961b181c79e73bd581821df2b10173727a810c92b83b5ba4a0403eb710d2ca10689a35bec6c3a708e9e92f7d78ff3c5d9989574b00c6736f84c199256e76e19e78f0c98a9d580b4a658c84fc8f2096c2fbea8f5f8c59d0fdacb3be2802ef802abbecb3aba4acaac69a0e965abd8981e9896b1f6ef9d60f7a164b371af869fd0e48073742825e9434fc54da837e120266d53302954843538ea7c6c3dbfb4ff3b2fdbe244437f2a153ccf7bdb4c92aa08102d4f3cff2ae5ef86fab4653595e6a5837fa2f3e29f27a9cde5966843fb847a4a61f1e76c281fe8bb2b0a181d096100db5a1a5ce7a910238251a43ca556712eaadea167fb4d7d75825e440f3ecd782036d7574df8bceacb397abefc5f5254d2722215c53ff54af8299aaaad642c6d72a14d27882d9bbd539e1cc7a527526ba89b8c037ad09120e98ab042d3e8652b31ae0e478516bfaf88efca9f3676ffe99d2819dcaeb7610a626695f53117665d267d3f7abebd6bbd6733f645c72c389f03855bdf1e4b8075b516569b118233a0f0971d24b83113c0b096f5216a207ca99a7cddc81c130923fe3d91e7508c9ac5f2e914ff5dccab9e558566fa14efb34ac98d878580814b94b73acbfde9072f30b881f7f0fff42d4045d1ace6322d86a97d164aa84d93a60498065cc7c20e636f5862dc81531a88c60305a2e59a985be327a6902e4bed986dbf4a0b50c217af0ea7fdf9ab37f9ea1a1aaa72f54cf40154ea9b269f1a7c09f9f43245109431a175d50e2db0132337baa0ef97eed0fcf20489da36b79a1172faccc2f7ded7c60e00694282d93359c4682135642bc81f433574aa8ef0c97b4ade7ca372c5ffc23c7eddd839bab4e0f14d6df15c9dbeab176bec8b5701cf054eb3072f6dadc98f88819042bf10c407516ee58bce33fbe3b3d86a54255e577db4598e30a135361528c101683a5fcde7e8ba53f3456254be8f45fe3a56120ae96ea3773631fcb3873aa3abd91bcff00bd38bd43697a2e789e00da6077482e7b1b1a677b5afae4c54e6cbdf7377b694eb7d7a5b913476a5be923322d3de06060fd5e819635232a2cf4f0731da13b8546d1d6d4f8d75b9fce6c2341a71b0ea6f780df54bfdb0dd5cd9855179f602f9172307c7268724c3618e6817abd793adc214a0dc0bc616816632f27ea336fb56dfd").unwrap());
chan_monitor: Arc<test_utils::TestChannelMonitor>,
node: Arc<ChannelManager>,
router: Router,
+ network_payment_count: Rc<RefCell<u8>>,
+ network_chan_count: Rc<RefCell<u32>>,
+ }
+ impl Drop for Node {
+ fn drop(&mut self) {
+ // Check that we processed all pending events
+ assert_eq!(self.node.get_and_clear_pending_events().len(), 0);
+ assert_eq!(self.chan_monitor.added_monitors.lock().unwrap().len(), 0);
+ }
}
- static mut CHAN_COUNT: u32 = 0;
fn create_chan_between_nodes(node_a: &Node, node_b: &Node) -> (msgs::ChannelAnnouncement, msgs::ChannelUpdate, msgs::ChannelUpdate, [u8; 32], Transaction) {
node_a.node.create_channel(node_b.node.get_our_node_id(), 100000, 10001, 42).unwrap();
node_a.node.handle_accept_channel(&node_b.node.get_our_node_id(), &accept_chan).unwrap();
- let chan_id = unsafe { CHAN_COUNT };
+ let chan_id = *node_a.network_chan_count.borrow();
let tx;
let funding_output;
_ => panic!("Unexpected event"),
};
- unsafe {
- CHAN_COUNT += 1;
- }
+ *node_a.network_chan_count.borrow_mut() += 1;
((*announcement).clone(), (*as_update).clone(), (*bs_update).clone(), channel_id, tx)
}
}
}
- static mut PAYMENT_COUNT: u8 = 0;
+ macro_rules! commitment_signed_dance {
+ ($node_a: expr, $node_b: expr, $commitment_signed: expr, $fail_backwards: expr) => {
+ {
+ {
+ let added_monitors = $node_a.chan_monitor.added_monitors.lock().unwrap();
+ assert!(added_monitors.is_empty());
+ }
+ let (as_revoke_and_ack, as_commitment_signed) = $node_a.node.handle_commitment_signed(&$node_b.node.get_our_node_id(), &$commitment_signed).unwrap();
+ {
+ let mut added_monitors = $node_a.chan_monitor.added_monitors.lock().unwrap();
+ assert_eq!(added_monitors.len(), 1);
+ added_monitors.clear();
+ }
+ {
+ let added_monitors = $node_b.chan_monitor.added_monitors.lock().unwrap();
+ assert!(added_monitors.is_empty());
+ }
+ assert!($node_b.node.handle_revoke_and_ack(&$node_a.node.get_our_node_id(), &as_revoke_and_ack).unwrap().is_none());
+ {
+ let mut added_monitors = $node_b.chan_monitor.added_monitors.lock().unwrap();
+ assert_eq!(added_monitors.len(), 1);
+ added_monitors.clear();
+ }
+ let (bs_revoke_and_ack, bs_none) = $node_b.node.handle_commitment_signed(&$node_a.node.get_our_node_id(), &as_commitment_signed.unwrap()).unwrap();
+ assert!(bs_none.is_none());
+ {
+ let mut added_monitors = $node_b.chan_monitor.added_monitors.lock().unwrap();
+ assert_eq!(added_monitors.len(), 1);
+ added_monitors.clear();
+ }
+ if $fail_backwards {
+ assert!($node_a.node.get_and_clear_pending_events().is_empty());
+ }
+ assert!($node_a.node.handle_revoke_and_ack(&$node_b.node.get_our_node_id(), &bs_revoke_and_ack).unwrap().is_none());
+ {
+ 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();
+ }
+ }
+ }
+ }
+
fn send_along_route(origin_node: &Node, route: Route, expected_route: &[&Node], recv_value: u64) -> ([u8; 32], [u8; 32]) {
- let our_payment_preimage = unsafe { [PAYMENT_COUNT; 32] };
- unsafe { PAYMENT_COUNT += 1 };
+ let our_payment_preimage = [*origin_node.network_payment_count.borrow(); 32];
+ *origin_node.network_payment_count.borrow_mut() += 1;
let our_payment_hash = {
let mut sha = Sha256::new();
sha.input(&our_payment_preimage[..]);
assert_eq!(added_monitors.len(), 0);
}
- let revoke_and_ack = node.node.handle_commitment_signed(&prev_node.node.get_our_node_id(), &payment_event.commitment_msg).unwrap();
- {
- let mut added_monitors = node.chan_monitor.added_monitors.lock().unwrap();
- assert_eq!(added_monitors.len(), 1);
- added_monitors.clear();
- }
- assert!(prev_node.node.handle_revoke_and_ack(&node.node.get_our_node_id(), &revoke_and_ack.0).unwrap().is_none());
- let prev_revoke_and_ack = prev_node.node.handle_commitment_signed(&node.node.get_our_node_id(), &revoke_and_ack.1.unwrap()).unwrap();
- {
- let mut added_monitors = prev_node.chan_monitor.added_monitors.lock().unwrap();
- assert_eq!(added_monitors.len(), 2);
- added_monitors.clear();
- }
- assert!(node.node.handle_revoke_and_ack(&prev_node.node.get_our_node_id(), &prev_revoke_and_ack.0).unwrap().is_none());
- assert!(prev_revoke_and_ack.1.is_none());
- {
- let mut added_monitors = node.chan_monitor.added_monitors.lock().unwrap();
- assert_eq!(added_monitors.len(), 1);
- added_monitors.clear();
- }
+ 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);
(our_payment_preimage, our_payment_hash)
}
- fn claim_payment(origin_node: &Node, expected_route: &[&Node], our_payment_preimage: [u8; 32]) {
+ fn claim_payment_along_route(origin_node: &Node, expected_route: &[&Node], skip_last: bool, our_payment_preimage: [u8; 32]) {
assert!(expected_route.last().unwrap().node.claim_funds(our_payment_preimage));
{
let mut added_monitors = expected_route.last().unwrap().chan_monitor.added_monitors.lock().unwrap();
}
added_monitors.clear();
}
- let revoke_and_commit = $node.node.handle_commitment_signed(&$prev_node.node.get_our_node_id(), &next_msgs.as_ref().unwrap().1).unwrap();
- {
- let mut added_monitors = $node.chan_monitor.added_monitors.lock().unwrap();
- assert_eq!(added_monitors.len(), 1);
- added_monitors.clear();
- }
- assert!($prev_node.node.handle_revoke_and_ack(&$node.node.get_our_node_id(), &revoke_and_commit.0).unwrap().is_none());
- let revoke_and_ack = $prev_node.node.handle_commitment_signed(&$node.node.get_our_node_id(), &revoke_and_commit.1.unwrap()).unwrap();
- assert!(revoke_and_ack.1.is_none());
- {
- let mut added_monitors = $prev_node.chan_monitor.added_monitors.lock().unwrap();
- assert_eq!(added_monitors.len(), 2);
- added_monitors.clear();
- }
- assert!($node.node.handle_revoke_and_ack(&$prev_node.node.get_our_node_id(), &revoke_and_ack.0).unwrap().is_none());
- {
- let mut added_monitors = $node.chan_monitor.added_monitors.lock().unwrap();
- assert_eq!(added_monitors.len(), 1);
- added_monitors.clear();
- }
+ commitment_signed_dance!($node, $prev_node, next_msgs.as_ref().unwrap().1, false);
}
}
}
let mut expected_next_node = expected_route.last().unwrap().node.get_our_node_id();
let mut prev_node = expected_route.last().unwrap();
- for node in expected_route.iter().rev() {
+ 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() {
update_fulfill_dance!(node, prev_node, false);
}
let events = node.node.get_and_clear_pending_events();
+ if !skip_last || idx != expected_route.len() - 1 {
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::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 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());
+ expected_next_node = node_id.clone();
+ next_msgs = Some((update_fulfill_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_fulfill_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::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 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());
- expected_next_node = node_id.clone();
- next_msgs = Some((update_fulfill_htlcs[0].clone(), commitment_signed.clone()));
+ Event::PaymentSent { payment_preimage } => {
+ assert_eq!(payment_preimage, our_payment_preimage);
},
_ => panic!("Unexpected event"),
- };
-
- prev_node = node;
+ }
}
+ }
- assert_eq!(expected_next_node, origin_node.node.get_our_node_id());
- update_fulfill_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::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: [u8; 32]) {
+ claim_payment_along_route(origin_node, expected_route, false, our_payment_preimage);
}
const TEST_FINAL_CLTV: u32 = 32;
assert_eq!(hop.pubkey, node.node.get_our_node_id());
}
- let our_payment_preimage = unsafe { [PAYMENT_COUNT; 32] };
- unsafe { PAYMENT_COUNT += 1 };
+ let our_payment_preimage = [*origin_node.network_payment_count.borrow(); 32];
+ *origin_node.network_payment_count.borrow_mut() += 1;
let our_payment_hash = {
let mut sha = Sha256::new();
sha.input(&our_payment_preimage[..]);
};
let err = origin_node.node.send_payment(route, our_payment_hash).err().unwrap();
- assert_eq!(err.err, "Cannot send value that would put us over our max HTLC value in flight");
+ match err {
+ APIError::RouteError{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) {
claim_payment(&origin, expected_route, our_payment_preimage);
}
- fn fail_payment(origin_node: &Node, expected_route: &[&Node], our_payment_hash: [u8; 32]) {
+ fn fail_payment_along_route(origin_node: &Node, expected_route: &[&Node], skip_last: bool, our_payment_hash: [u8; 32]) {
assert!(expected_route.last().unwrap().node.fail_htlc_backwards(&our_payment_hash));
{
let mut added_monitors = expected_route.last().unwrap().chan_monitor.added_monitors.lock().unwrap();
($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();
- let revoke_and_commit = $node.node.handle_commitment_signed(&$prev_node.node.get_our_node_id(), &next_msgs.as_ref().unwrap().1).unwrap();
-
- {
- let mut added_monitors = $node.chan_monitor.added_monitors.lock().unwrap();
- assert_eq!(added_monitors.len(), 1);
- added_monitors.clear();
- }
- assert!($prev_node.node.handle_revoke_and_ack(&$node.node.get_our_node_id(), &revoke_and_commit.0).unwrap().is_none());
- {
- let mut added_monitors = $prev_node.chan_monitor.added_monitors.lock().unwrap();
- assert_eq!(added_monitors.len(), 1);
- added_monitors.clear();
- }
- let revoke_and_ack = $prev_node.node.handle_commitment_signed(&$node.node.get_our_node_id(), &revoke_and_commit.1.unwrap()).unwrap();
- {
- let mut added_monitors = $prev_node.chan_monitor.added_monitors.lock().unwrap();
- assert_eq!(added_monitors.len(), 1);
- added_monitors.clear();
- }
- assert!(revoke_and_ack.1.is_none());
- assert!($node.node.get_and_clear_pending_events().is_empty());
- assert!($node.node.handle_revoke_and_ack(&$prev_node.node.get_our_node_id(), &revoke_and_ack.0).unwrap().is_none());
- {
- let mut added_monitors = $node.chan_monitor.added_monitors.lock().unwrap();
- if $last_node {
- assert_eq!(added_monitors.len(), 1);
- } else {
- assert_eq!(added_monitors.len(), 2);
- assert!(added_monitors[0].0 != added_monitors[1].0);
- }
- added_monitors.clear();
- }
+ commitment_signed_dance!($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 node in expected_route.iter().rev() {
+ 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() {
- update_fail_dance!(node, prev_node, false);
+ // 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_events();
- assert_eq!(events.len(), 1);
- match events[0] {
- Event::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 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());
- expected_next_node = node_id.clone();
- next_msgs = Some((update_fail_htlcs[0].clone(), commitment_signed.clone()));
- },
- _ => panic!("Unexpected event"),
- };
+ if !skip_last || idx != expected_route.len() - 1 {
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::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 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());
+ 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;
}
- assert_eq!(expected_next_node, origin_node.node.get_our_node_id());
- update_fail_dance!(origin_node, expected_route.first().unwrap(), true);
+ 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 } => {
- assert_eq!(payment_hash, our_payment_hash);
- },
- _ => panic!("Unexpected event"),
+ let events = origin_node.node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PaymentFailed { payment_hash } => {
+ assert_eq!(payment_hash, our_payment_hash);
+ },
+ _ => panic!("Unexpected event"),
+ }
}
}
+ fn fail_payment(origin_node: &Node, expected_route: &[&Node], our_payment_hash: [u8; 32]) {
+ fail_payment_along_route(origin_node, expected_route, false, our_payment_hash);
+ }
+
fn create_network(node_count: usize) -> Vec<Node> {
let mut nodes = Vec::new();
let mut rng = thread_rng();
let secp_ctx = Secp256k1::new();
let logger: Arc<Logger> = Arc::new(test_utils::TestLogger::new());
+ let chan_count = Rc::new(RefCell::new(0));
+ let payment_count = Rc::new(RefCell::new(0));
+
for _ in 0..node_count {
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 node = ChannelManager::new(node_id.clone(), 0, true, Network::Testnet, feeest.clone(), chan_monitor.clone(), chain_monitor.clone(), tx_broadcaster.clone(), Arc::clone(&logger)).unwrap();
let router = Router::new(PublicKey::from_secret_key(&secp_ctx, &node_id), chain_monitor.clone(), Arc::clone(&logger));
- nodes.push(Node { chain_monitor, tx_broadcaster, chan_monitor, node, router });
+ nodes.push(Node { chain_monitor, tx_broadcaster, chan_monitor, node, router,
+ network_payment_count: payment_count.clone(),
+ network_chan_count: chan_count.clone(),
+ });
}
nodes
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);
+ }
- // Check that we processed all pending events
- for node in nodes {
- assert_eq!(node.node.get_and_clear_pending_events().len(), 0);
- assert_eq!(node.chan_monitor.added_monitors.lock().unwrap().len(), 0);
- }
+ #[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<Transaction>, has_htlc_tx: HTLCType) -> Vec<Transaction> {
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);
-
- if let Some(explicit_tx) = commitment_tx {
- res.push(explicit_tx.clone());
- } else {
- for tx in node_txn.iter() {
- if tx.input.len() == 1 && tx.input[0].previous_output.txid == chan.3.txid() {
- let mut funding_tx_map = HashMap::new();
- funding_tx_map.insert(chan.3.txid(), chan.3.clone());
- tx.verify(&funding_tx_map).unwrap();
+ node_txn.retain(|tx| {
+ if tx.input.len() == 1 && tx.input[0].previous_output.txid == chan.3.txid() {
+ let mut funding_tx_map = HashMap::new();
+ funding_tx_map.insert(chan.3.txid(), chan.3.clone());
+ tx.verify(&funding_tx_map).unwrap();
+ 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 {
- for tx in node_txn.iter() {
+ node_txn.retain(|tx| {
if tx.input.len() == 1 && tx.input[0].previous_output.txid == res[0].txid() {
let mut funding_tx_map = HashMap::new();
funding_tx_map.insert(res[0].txid(), res[0].clone());
assert!(tx.lock_time == 0);
}
res.push(tx.clone());
- break;
- }
- }
+ false
+ } else { true }
+ });
assert_eq!(res.len(), 2);
}
- node_txn.clear();
+
+ 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() {
+ let mut funding_tx_map = HashMap::new();
+ funding_tx_map.insert(revoked_tx.txid(), revoked_tx.clone());
+ tx.verify(&funding_tx_map).unwrap();
+ false
+ } else { true }
+ });
+ assert!(node_txn.is_empty());
+ }
+
fn check_preimage_claim(node: &Node, prev_txn: &Vec<Transaction>) -> Vec<Transaction> {
let mut node_txn = node.tx_broadcaster.txn_broadcasted.lock().unwrap();
let node_txn = test_txn_broadcast(&nodes[3], &chan_4, None, HTLCType::TIMEOUT);
- // Claim the payment on nodes[3], giving it knowledge of the preimage
+ // 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[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(), 2);
+ 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);
let mut funding_tx_map = HashMap::new();
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);
-
- //TODO: At this point nodes[1] should claim the revoked HTLC-Timeout output, but that's
- //not yet implemented in ChannelMonitor
+ 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);
+ }
- // Check that we processed all pending events
- for node in nodes {
- assert_eq!(node.node.get_and_clear_pending_events().len(), 0);
- assert_eq!(node.chan_monitor.added_monitors.lock().unwrap().len(), 0);
+ #[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_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::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_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::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 = [*nodes[0].network_payment_count.borrow(); 32];
+ *nodes[0].network_payment_count.borrow_mut() += 1;
+ let our_payment_hash = {
+ let mut sha = Sha256::new();
+ sha.input(&our_payment_preimage[..]);
+ let mut ret = [0; 32];
+ sha.result(&mut ret);
+ ret
+ };
+
+ let mut payment_event = {
+ nodes[0].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(), 1);
+ added_monitors.clear();
+ }
+
+ let mut events = nodes[0].node.get_and_clear_pending_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_events();
+ assert_eq!(events_2.len(), 1);
+ payment_event = SendEvent::from_event(events_2.remove(0));
+ assert_eq!(payment_event.msgs.len(), 1);
+
+ {
+ let mut added_monitors = nodes[1].chan_monitor.added_monitors.lock().unwrap();
+ assert_eq!(added_monitors.len(), 1);
+ added_monitors.clear();
+ }
+
+ 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();
+
+ {
+ let mut added_monitors = nodes[2].chan_monitor.added_monitors.lock().unwrap();
+ assert_eq!(added_monitors.len(), 1);
+ added_monitors.clear();
+ }
+
+ // 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_events();
+ assert_eq!(events_3.len(), 1);
+ match events_3[0] {
+ Event::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_events();
+ // Note no UpdateHTLCs event here from nodes[1] to nodes[0]!
+ assert_eq!(events_4.len(), 1);
+ match events_4[0] {
+ Event::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
+ let mut funding_tx_map = HashMap::new();
+ funding_tx_map.insert(tx.txid(), tx);
+ node_txn[0].verify(&funding_tx_map).unwrap();
}
#[test]
while !headers.is_empty() {
nodes[0].node.block_disconnected(&headers.pop().unwrap());
}
+ {
+ let events = nodes[0].node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::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);
}
+ fn reconnect_nodes(node_a: &Node, node_b: &Node, pre_all_htlcs: bool, pending_htlc_claims: (usize, usize), pending_htlc_fails: (usize, usize)) {
+ let reestablish_1 = node_a.node.peer_connected(&node_b.node.get_our_node_id());
+ let reestablish_2 = node_b.node.peer_connected(&node_a.node.get_our_node_id());
+
+ let mut resp_1 = Vec::new();
+ for msg in reestablish_1 {
+ resp_1.push(node_b.node.handle_channel_reestablish(&node_a.node.get_our_node_id(), &msg).unwrap());
+ }
+ {
+ let mut added_monitors = node_b.chan_monitor.added_monitors.lock().unwrap();
+ if pending_htlc_claims.0 != 0 || pending_htlc_fails.0 != 0 {
+ assert_eq!(added_monitors.len(), 1);
+ } else {
+ assert!(added_monitors.is_empty());
+ }
+ added_monitors.clear();
+ }
+
+ let mut resp_2 = Vec::new();
+ for msg in reestablish_2 {
+ resp_2.push(node_a.node.handle_channel_reestablish(&node_b.node.get_our_node_id(), &msg).unwrap());
+ }
+ {
+ let mut added_monitors = node_a.chan_monitor.added_monitors.lock().unwrap();
+ if pending_htlc_claims.1 != 0 || pending_htlc_fails.1 != 0 {
+ assert_eq!(added_monitors.len(), 1);
+ } else {
+ assert!(added_monitors.is_empty());
+ }
+ added_monitors.clear();
+ }
+
+ // We dont yet support both needing updates, as that would require a different commitment dance:
+ assert!((pending_htlc_claims.0 == 0 && pending_htlc_fails.0 == 0) || (pending_htlc_claims.1 == 0 && pending_htlc_fails.1 == 0));
+
+ for chan_msgs in resp_1.drain(..) {
+ if pre_all_htlcs {
+ let _announcement_sigs_opt = node_a.node.handle_funding_locked(&node_b.node.get_our_node_id(), &chan_msgs.0.unwrap()).unwrap();
+ //TODO: Test announcement_sigs re-sending when we've implemented it
+ } else {
+ assert!(chan_msgs.0.is_none());
+ }
+ assert!(chan_msgs.1.is_none());
+ if pending_htlc_claims.0 != 0 || pending_htlc_fails.0 != 0 {
+ let commitment_update = chan_msgs.2.unwrap();
+ assert!(commitment_update.update_add_htlcs.is_empty()); // We can't relay while disconnected
+ assert_eq!(commitment_update.update_fulfill_htlcs.len(), pending_htlc_claims.0);
+ assert_eq!(commitment_update.update_fail_htlcs.len(), pending_htlc_fails.0);
+ assert!(commitment_update.update_fail_malformed_htlcs.is_empty());
+ 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();
+ }
+
+ commitment_signed_dance!(node_a, node_b, commitment_update.commitment_signed, false);
+ } else {
+ assert!(chan_msgs.2.is_none());
+ }
+ }
+
+ for chan_msgs in resp_2.drain(..) {
+ if pre_all_htlcs {
+ let _announcement_sigs_opt = node_b.node.handle_funding_locked(&node_a.node.get_our_node_id(), &chan_msgs.0.unwrap()).unwrap();
+ //TODO: Test announcement_sigs re-sending when we've implemented it
+ } else {
+ assert!(chan_msgs.0.is_none());
+ }
+ assert!(chan_msgs.1.is_none());
+ if pending_htlc_claims.1 != 0 || pending_htlc_fails.1 != 0 {
+ let commitment_update = chan_msgs.2.unwrap();
+ assert!(commitment_update.update_add_htlcs.is_empty()); // We can't relay while disconnected
+ assert_eq!(commitment_update.update_fulfill_htlcs.len(), pending_htlc_claims.0);
+ assert_eq!(commitment_update.update_fail_htlcs.len(), pending_htlc_fails.0);
+ assert!(commitment_update.update_fail_malformed_htlcs.is_empty());
+ 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();
+ }
+
+ commitment_signed_dance!(node_b, node_a, commitment_update.commitment_signed, false);
+ } 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, (0, 0), (0, 0));
+
+ 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, (0, 0), (0, 0));
+
+ 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, (1, 0), (1, 0));
+ {
+ 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 } => {
+ assert_eq!(payment_hash, payment_hash_5);
+ },
+ _ => 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);
+ }
+
#[test]
fn test_invalid_channel_announcement() {
//Test BOLT 7 channel_announcement msg requirement for final node, gather data to build customed channel_announcement msgs
projects / rust-lightning / blobdiff