// 030173 - inbound read from peer id 1 of len 115
// 0085 3f00000000000000000000000000000000000000000000000000000000000000 0300000000000000000000000000000000000000000000000000000000000000 030500000000000000000000000000000000000000000000000000000000000000 01000000000000000000000000000000 - revoke_and_ack and mac
//
+ // 07 - process the now-pending HTLC forward
// - client now sends id 0 update_fail_htlc and commitment_signed (CHECK 9)
// - now respond to the update_fail_htlc+commitment_signed messages the client sent to peer 0
+ //
// 030012 - inbound read from peer id 0 of len 18
// 0063 03000000000000000000000000000000 - message header indicating message length 99
// 030073 - inbound read from peer id 0 of len 115
// 00fd - A feerate request (returning min feerate, which our open_channel also uses)
// 0c005e - connect a block with one transaction of len 94
// 0200000001fb00000000000000000000000000000000000000000000000000000000000000000000000000000000014f00000000000000220020f60000000000000000000000000000000000000000000000000000000000000000000000 - the funding transaction
+ //
+ // 07 - process the now-pending HTLC forward
// - client now fails the HTLC backwards as it was unable to extract the payment preimage (CHECK 9 duplicate and CHECK 10)
let logger = Arc::new(TrackingLogger { lines: Mutex::new(HashMap::new()) });
- super::do_test(&::hex::decode("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fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0300ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0300ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0300ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0300c1ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffef000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000000fd03001200a4030000000000000000000000000000000300b400843d00000000000000000000000000000000000000000000000000000000000000070000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010001ba000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d000000000000000300000000000000000000000000000003001200630300000000000000000000000000000003007300853d00000000000000000000000000000000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000003060000000000000000000000000000000000000000000000000000000000000003000000000000000000000000000000070c007d02000000013f00000000000000000000000000000000000000000000000000000000000000000000000000000080020001000000000000220020e2000000000000000000000000000000000000000000000000000000000000006cc10000000000001600142e000000000000000000000000000000000000000500002000fd0c005e0200000001fb00000000000000000000000000000000000000000000000000000000000000000000000000000000014f00000000000000220020f60000000000000000000000000000000000000000000000000000000000000000000000").unwrap(), &(Arc::clone(&logger) as Arc<Logger>));
+ super::do_test(&::hex::decode("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&(Arc::clone(&logger) as Arc<Logger>));
let log_entries = logger.lines.lock().unwrap();
assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendAcceptChannel event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000000 for channel ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679".to_string())), Some(&1)); // 1
}))
}
- pub fn get_update_fail_htlc_and_commit(&mut self, htlc_id: u64, err_packet: msgs::OnionErrorPacket) -> Result<Option<(msgs::UpdateFailHTLC, msgs::CommitmentSigned, ChannelMonitor)>, ChannelError> {
- match self.get_update_fail_htlc(htlc_id, err_packet)? {
- Some(update_fail_htlc) => {
- let (commitment, monitor_update) = self.send_commitment_no_status_check()?;
- Ok(Some((update_fail_htlc, commitment, monitor_update)))
- },
- None => Ok(None)
- }
- }
-
// Message handlers:
pub fn accept_channel(&mut self, msg: &msgs::AcceptChannel, config: &UserConfig) -> Result<(), ChannelError> {
/// waiting on the remote peer to send us a revoke_and_ack during which time we cannot add new
/// HTLCs on the wire or we wouldn't be able to determine what they actually ACK'ed.
/// You MUST call send_commitment prior to any other calls on this Channel
+ /// If an Err is returned, its a ChannelError::Ignore!
pub fn send_htlc(&mut self, amount_msat: u64, payment_hash: PaymentHash, cltv_expiry: u32, source: HTLCSource, onion_routing_packet: msgs::OnionPacket) -> Result<Option<msgs::UpdateAddHTLC>, ChannelError> {
if (self.channel_state & (ChannelState::ChannelFunded as u32 | BOTH_SIDES_SHUTDOWN_MASK)) != (ChannelState::ChannelFunded as u32) {
return Err(ChannelError::Ignore("Cannot send HTLC until channel is fully established and we haven't started shutting down"));
}
if have_updates { break; }
}
+ for htlc in self.pending_inbound_htlcs.iter() {
+ if let InboundHTLCState::LocalRemoved(_) = htlc.state {
+ have_updates = true;
+ }
+ if have_updates { break; }
+ }
if !have_updates {
panic!("Cannot create commitment tx until we have some updates to send");
}
use util::chacha20::ChaCha20;
use util::logger::Logger;
use util::errors::APIError;
-use util::errors;
use std::{cmp, mem};
use std::collections::{HashMap, hash_map, HashSet};
/// probably increase this significantly.
const MIN_HTLC_RELAY_HOLDING_CELL_MILLIS: u32 = 50;
-pub(super) struct HTLCForwardInfo {
- prev_short_channel_id: u64,
- prev_htlc_id: u64,
- #[cfg(test)]
- pub(super) forward_info: PendingForwardHTLCInfo,
- #[cfg(not(test))]
- forward_info: PendingForwardHTLCInfo,
+pub(super) enum HTLCForwardInfo {
+ AddHTLC {
+ prev_short_channel_id: u64,
+ prev_htlc_id: u64,
+ forward_info: PendingForwardHTLCInfo,
+ },
+ FailHTLC {
+ htlc_id: u64,
+ err_packet: msgs::OnionErrorPacket,
+ },
}
/// For events which result in both a RevokeAndACK and a CommitmentUpdate, by default they should
Some(chan_id) => chan_id.clone(),
None => {
failed_forwards.reserve(pending_forwards.len());
- 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));
+ for forward_info in pending_forwards.drain(..) {
+ match forward_info {
+ HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info } => {
+ 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));
+ },
+ HTLCForwardInfo::FailHTLC { .. } => {
+ // Channel went away before we could fail it. This implies
+ // the channel is now on chain and our counterparty is
+ // trying to broadcast the HTLC-Timeout, but that's their
+ // problem, not ours.
+ }
+ }
}
continue;
}
let forward_chan = &mut channel_state.by_id.get_mut(&forward_chan_id).unwrap();
let mut add_htlc_msgs = Vec::new();
- 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((htlc_source, forward_info.payment_hash, 0x1000 | 7, Some(chan_update)));
- continue;
+ let mut fail_htlc_msgs = Vec::new();
+ for forward_info in pending_forwards.drain(..) {
+ match forward_info {
+ HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info } => {
+ log_trace!(self, "Adding HTLC from short id {} with payment_hash {} to channel with short id {} after delay", log_bytes!(forward_info.payment_hash.0), prev_short_channel_id, short_chan_id);
+ 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) => {
+ if let ChannelError::Ignore(_) = e {} else {
+ panic!("Stated return value requirements in send_htlc() were not met");
+ }
+ let chan_update = self.get_channel_update(forward_chan).unwrap();
+ failed_forwards.push((htlc_source, forward_info.payment_hash, 0x1000 | 7, Some(chan_update)));
+ continue;
+ },
+ Ok(update_add) => {
+ match update_add {
+ Some(msg) => { add_htlc_msgs.push(msg); },
+ None => {
+ // Nothing to do here...we're waiting on a remote
+ // revoke_and_ack before we can add anymore HTLCs. The Channel
+ // will automatically handle building the update_add_htlc and
+ // commitment_signed messages when we can.
+ // TODO: Do some kind of timer to set the channel as !is_live()
+ // as we don't really want others relying on us relaying through
+ // this channel currently :/.
+ }
+ }
+ }
+ }
},
- Ok(update_add) => {
- match update_add {
- Some(msg) => { add_htlc_msgs.push(msg); },
- None => {
+ HTLCForwardInfo::FailHTLC { htlc_id, err_packet } => {
+ log_trace!(self, "Failing HTLC back to channel with short id {} after delay", short_chan_id);
+ match forward_chan.get_update_fail_htlc(htlc_id, err_packet) {
+ Err(e) => {
+ if let ChannelError::Ignore(_) = e {} else {
+ panic!("Stated return value requirements in get_update_fail_htlc() were not met");
+ }
+ // fail-backs are best-effort, we probably already have one
+ // pending, and if not that's OK, if not, the channel is on
+ // the chain and sending the HTLC-Timeout is their problem.
+ continue;
+ },
+ Ok(Some(msg)) => { fail_htlc_msgs.push(msg); },
+ Ok(None) => {
// Nothing to do here...we're waiting on a remote
- // revoke_and_ack before we can add anymore HTLCs. The Channel
- // will automatically handle building the update_add_htlc and
- // commitment_signed messages when we can.
- // TODO: Do some kind of timer to set the channel as !is_live()
- // as we don't really want others relying on us relaying through
- // this channel currently :/.
+ // revoke_and_ack before we can update the commitment
+ // transaction. The Channel will automatically handle
+ // building the update_fail_htlc and commitment_signed
+ // messages when we can.
+ // We don't need any kind of timer here as they should fail
+ // the channel onto the chain if they can't get our
+ // update_fail_htlc in time, its not our problem.
}
}
- }
+ },
}
}
- if !add_htlc_msgs.is_empty() {
+ if !add_htlc_msgs.is_empty() || !fail_htlc_msgs.is_empty() {
let (commitment_msg, monitor) = match forward_chan.send_commitment() {
Ok(res) => res,
Err(e) => {
updates: msgs::CommitmentUpdate {
update_add_htlcs: add_htlc_msgs,
update_fulfill_htlcs: Vec::new(),
- update_fail_htlcs: Vec::new(),
+ update_fail_htlcs: fail_htlc_msgs,
update_fail_malformed_htlcs: Vec::new(),
update_fee: None,
commitment_signed: commitment_msg,
});
}
} else {
- 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(events::Event::PaymentReceived {
- payment_hash: forward_info.payment_hash,
- amt: forward_info.amt_to_forward,
- });
+ for forward_info in pending_forwards.drain(..) {
+ match forward_info {
+ HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info } => {
+ 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(events::Event::PaymentReceived {
+ payment_hash: forward_info.payment_hash,
+ amt: forward_info.amt_to_forward,
+ });
+ },
+ HTLCForwardInfo::FailHTLC { .. } => {
+ panic!("Got pending fail of our own HTLC");
+ }
+ }
}
}
}
/// 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_lock: MutexGuard<ChannelHolder>, source: HTLCSource, payment_hash: &PaymentHash, onion_error: HTLCFailReason) {
+ //TODO: There is a timing attack here where if a node fails an HTLC back to us they can
+ //identify whether we sent it or not based on the (I presume) very different runtime
+ //between the branches here. We should make this async and move it into the forward HTLCs
+ //timer handling.
match source {
HTLCSource::OutboundRoute { ref route, .. } => {
log_trace!(self, "Failing outbound payment HTLC with payment_hash {}", log_bytes!(payment_hash.0));
match &onion_error {
&HTLCFailReason::ErrorPacket { ref err } => {
#[cfg(test)]
- let (channel_update, payment_retryable, onion_error_code) = self.process_onion_failure(&source, err.data.clone());
+ let (channel_update, payment_retryable, onion_error_code) = onion_utils::process_onion_failure(&self.secp_ctx, &self.logger, &source, err.data.clone());
#[cfg(not(test))]
- let (channel_update, payment_retryable, _) = self.process_onion_failure(&source, err.data.clone());
+ let (channel_update, payment_retryable, _) = onion_utils::process_onion_failure(&self.secp_ctx, &self.logger, &source, err.data.clone());
// TODO: If we decided to blame ourselves (or one of our channels) in
// process_onion_failure we should close that channel as it implies our
// next-hop is needlessly blaming us!
}
};
- let channel_state = channel_state_lock.borrow_parts();
-
- let chan_id = match channel_state.short_to_id.get(&short_channel_id) {
- Some(chan_id) => chan_id.clone(),
- None => return
- };
-
- let chan = channel_state.by_id.get_mut(&chan_id).unwrap();
- match chan.get_update_fail_htlc_and_commit(htlc_id, err_packet) {
- Ok(Some((msg, commitment_msg, chan_monitor))) => {
- if let Err(_e) = self.monitor.add_update_monitor(chan_monitor.get_funding_txo().unwrap(), chan_monitor) {
- unimplemented!();
- }
- channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: chan.get_their_node_id(),
- updates: msgs::CommitmentUpdate {
- update_add_htlcs: Vec::new(),
- update_fulfill_htlcs: Vec::new(),
- update_fail_htlcs: vec![msg],
- update_fail_malformed_htlcs: Vec::new(),
- update_fee: None,
- commitment_signed: commitment_msg,
- },
- });
- },
- Ok(None) => {},
- Err(_e) => {
- //TODO: Do something with e?
- return;
+ let mut forward_event = None;
+ if channel_state_lock.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_lock.next_forward = forward_event.unwrap();
+ }
+ match channel_state_lock.forward_htlcs.entry(short_channel_id) {
+ hash_map::Entry::Occupied(mut entry) => {
+ entry.get_mut().push(HTLCForwardInfo::FailHTLC { htlc_id, err_packet });
},
+ hash_map::Entry::Vacant(entry) => {
+ entry.insert(vec!(HTLCForwardInfo::FailHTLC { htlc_id, err_packet }));
+ }
+ }
+ mem::drop(channel_state_lock);
+ if let Some(time) = forward_event {
+ let mut pending_events = self.pending_events.lock().unwrap();
+ pending_events.push(events::Event::PendingHTLCsForwardable {
+ time_forwardable: time
+ });
}
},
}
Ok(())
}
- // Process failure we got back from upstream on a payment we sent. Returns update and a boolean
- // indicating that the payment itself failed
- fn process_onion_failure(&self, htlc_source: &HTLCSource, mut packet_decrypted: Vec<u8>) -> (Option<msgs::HTLCFailChannelUpdate>, bool, Option<u16>) {
- if let &HTLCSource::OutboundRoute { ref route, ref session_priv, ref first_hop_htlc_msat } = htlc_source {
-
- let mut res = None;
- let mut htlc_msat = *first_hop_htlc_msat;
- let mut error_code_ret = None;
- let mut next_route_hop_ix = 0;
- let mut is_from_final_node = false;
-
- // Handle packed channel/node updates for passing back for the route handler
- onion_utils::construct_onion_keys_callback(&self.secp_ctx, route, session_priv, |shared_secret, _, _, route_hop| {
- next_route_hop_ix += 1;
- if res.is_some() { return; }
-
- let amt_to_forward = htlc_msat - route_hop.fee_msat;
- htlc_msat = amt_to_forward;
-
- let ammag = onion_utils::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;
-
- is_from_final_node = route.hops.last().unwrap().pubkey == route_hop.pubkey;
-
- if let Ok(err_packet) = msgs::DecodedOnionErrorPacket::read(&mut Cursor::new(&packet_decrypted)) {
- let um = onion_utils::gen_um_from_shared_secret(&shared_secret[..]);
- let mut hmac = HmacEngine::<Sha256>::new(&um);
- hmac.input(&err_packet.encode()[32..]);
-
- if fixed_time_eq(&Hmac::from_engine(hmac).into_inner(), &err_packet.hmac) {
- if let Some(error_code_slice) = err_packet.failuremsg.get(0..2) {
- const PERM: u16 = 0x4000;
- const NODE: u16 = 0x2000;
- const UPDATE: u16 = 0x1000;
-
- let error_code = byte_utils::slice_to_be16(&error_code_slice);
- error_code_ret = Some(error_code);
-
- let (debug_field, debug_field_size) = errors::get_onion_debug_field(error_code);
-
- // indicate that payment parameter has failed and no need to
- // update Route object
- let payment_failed = (match error_code & 0xff {
- 15|16|17|18|19 => true,
- _ => false,
- } && is_from_final_node) // PERM bit observed below even this error is from the intermediate nodes
- || error_code == 21; // Special case error 21 as the Route object is bogus, TODO: Maybe fail the node if the CLTV was reasonable?
-
- let mut fail_channel_update = None;
-
- if error_code & NODE == NODE {
- fail_channel_update = Some(msgs::HTLCFailChannelUpdate::NodeFailure { node_id: route_hop.pubkey, is_permanent: error_code & PERM == PERM });
- }
- else if error_code & PERM == PERM {
- fail_channel_update = if payment_failed {None} else {Some(msgs::HTLCFailChannelUpdate::ChannelClosed {
- short_channel_id: route.hops[next_route_hop_ix - if next_route_hop_ix == route.hops.len() { 1 } else { 0 }].short_channel_id,
- is_permanent: true,
- })};
- }
- else if error_code & UPDATE == UPDATE {
- if let Some(update_len_slice) = err_packet.failuremsg.get(debug_field_size+2..debug_field_size+4) {
- let update_len = byte_utils::slice_to_be16(&update_len_slice) as usize;
- if let Some(update_slice) = err_packet.failuremsg.get(debug_field_size + 4..debug_field_size + 4 + update_len) {
- if let Ok(chan_update) = msgs::ChannelUpdate::read(&mut Cursor::new(&update_slice)) {
- // if channel_update should NOT have caused the failure:
- // MAY treat the channel_update as invalid.
- let is_chan_update_invalid = match error_code & 0xff {
- 7 => false,
- 11 => amt_to_forward > chan_update.contents.htlc_minimum_msat,
- 12 => {
- let new_fee = amt_to_forward.checked_mul(chan_update.contents.fee_proportional_millionths as u64).and_then(|prop_fee| { (prop_fee / 1000000).checked_add(chan_update.contents.fee_base_msat as u64) });
- new_fee.is_some() && route_hop.fee_msat >= new_fee.unwrap()
- }
- 13 => route_hop.cltv_expiry_delta as u16 >= chan_update.contents.cltv_expiry_delta,
- 14 => false, // expiry_too_soon; always valid?
- 20 => chan_update.contents.flags & 2 == 0,
- _ => false, // unknown error code; take channel_update as valid
- };
- fail_channel_update = if is_chan_update_invalid {
- // This probably indicates the node which forwarded
- // to the node in question corrupted something.
- Some(msgs::HTLCFailChannelUpdate::ChannelClosed {
- short_channel_id: route_hop.short_channel_id,
- is_permanent: true,
- })
- } else {
- Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage {
- msg: chan_update,
- })
- };
- }
- }
- }
- if fail_channel_update.is_none() {
- // They provided an UPDATE which was obviously bogus, not worth
- // trying to relay through them anymore.
- fail_channel_update = Some(msgs::HTLCFailChannelUpdate::NodeFailure {
- node_id: route_hop.pubkey,
- is_permanent: true,
- });
- }
- } else if !payment_failed {
- // We can't understand their error messages and they failed to
- // forward...they probably can't understand our forwards so its
- // really not worth trying any further.
- fail_channel_update = Some(msgs::HTLCFailChannelUpdate::NodeFailure {
- node_id: route_hop.pubkey,
- is_permanent: true,
- });
- }
-
- // TODO: Here (and a few other places) we assume that BADONION errors
- // are always "sourced" from the node previous to the one which failed
- // to decode the onion.
- res = Some((fail_channel_update, !(error_code & PERM == PERM && is_from_final_node)));
-
- let (description, title) = errors::get_onion_error_description(error_code);
- if debug_field_size > 0 && err_packet.failuremsg.len() >= 4 + debug_field_size {
- log_warn!(self, "Onion Error[{}({:#x}) {}({})] {}", title, error_code, debug_field, log_bytes!(&err_packet.failuremsg[4..4+debug_field_size]), description);
- }
- else {
- log_warn!(self, "Onion Error[{}({:#x})] {}", title, error_code, description);
- }
- } else {
- // Useless packet that we can't use but it passed HMAC, so it
- // definitely came from the peer in question
- res = Some((Some(msgs::HTLCFailChannelUpdate::NodeFailure {
- node_id: route_hop.pubkey,
- is_permanent: true,
- }), !is_from_final_node));
- }
- }
- }
- }).expect("Route that we sent via spontaneously grew invalid keys in the middle of it?");
- if let Some((channel_update, payment_retryable)) = res {
- (channel_update, payment_retryable, error_code_ret)
- } else {
- // only not set either packet unparseable or hmac does not match with any
- // payment not retryable only when garbage is from the final node
- (None, !is_from_final_node, None)
- }
- } else { unreachable!(); }
- }
-
fn internal_update_fail_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) -> Result<(), MsgHandleErrInternal> {
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = channel_lock.borrow_parts();
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, prev_htlc_id, forward_info });
+ entry.get_mut().push(HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info });
},
hash_map::Entry::Vacant(entry) => {
- entry.insert(vec!(HTLCForwardInfo { prev_short_channel_id, prev_htlc_id, forward_info }));
+ entry.insert(vec!(HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info }));
}
}
}
}
}
-impl_writeable!(HTLCForwardInfo, 0, {
- prev_short_channel_id,
- prev_htlc_id,
- forward_info
-});
+impl Writeable for HTLCForwardInfo {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
+ match self {
+ &HTLCForwardInfo::AddHTLC { ref prev_short_channel_id, ref prev_htlc_id, ref forward_info } => {
+ 0u8.write(writer)?;
+ prev_short_channel_id.write(writer)?;
+ prev_htlc_id.write(writer)?;
+ forward_info.write(writer)?;
+ },
+ &HTLCForwardInfo::FailHTLC { ref htlc_id, ref err_packet } => {
+ 1u8.write(writer)?;
+ htlc_id.write(writer)?;
+ err_packet.write(writer)?;
+ },
+ }
+ Ok(())
+ }
+}
+
+impl<R: ::std::io::Read> Readable<R> for HTLCForwardInfo {
+ fn read(reader: &mut R) -> Result<HTLCForwardInfo, DecodeError> {
+ match <u8 as Readable<R>>::read(reader)? {
+ 0 => Ok(HTLCForwardInfo::AddHTLC {
+ prev_short_channel_id: Readable::read(reader)?,
+ prev_htlc_id: Readable::read(reader)?,
+ forward_info: Readable::read(reader)?,
+ }),
+ 1 => Ok(HTLCForwardInfo::FailHTLC {
+ htlc_id: Readable::read(reader)?,
+ err_packet: Readable::read(reader)?,
+ }),
+ _ => Err(DecodeError::InvalidValue),
+ }
+ }
+}
impl Writeable for ChannelManager {
fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::std::io::Error> {
use chain::keysinterface::{KeysInterface, SpendableOutputDescriptor};
use chain::keysinterface;
use ln::channel::{COMMITMENT_TX_BASE_WEIGHT, COMMITMENT_TX_WEIGHT_PER_HTLC};
-use ln::channelmanager::{ChannelManager,ChannelManagerReadArgs,RAACommitmentOrder, PaymentPreimage, PaymentHash};
+use ln::channelmanager::{ChannelManager,ChannelManagerReadArgs,HTLCForwardInfo,RAACommitmentOrder, PaymentPreimage, PaymentHash};
use ln::channelmonitor::{ChannelMonitor, ChannelMonitorUpdateErr, CLTV_CLAIM_BUFFER, HTLC_FAIL_TIMEOUT_BLOCKS, ManyChannelMonitor};
use ln::channel::{ACCEPTED_HTLC_SCRIPT_WEIGHT, OFFERED_HTLC_SCRIPT_WEIGHT};
use ln::onion_utils;
{
let (extra_msg_option, bs_revoke_and_ack) = commitment_signed_dance!($node_a, $node_b, (), $fail_backwards, true, true, true);
$node_a.node.handle_revoke_and_ack(&$node_b.node.get_our_node_id(), &bs_revoke_and_ack).unwrap();
- {
- let mut added_monitors = $node_a.chan_monitor.added_monitors.lock().unwrap();
- if $fail_backwards {
- assert_eq!(added_monitors.len(), 2);
- assert!(added_monitors[0].0 != added_monitors[1].0);
- } else {
- assert_eq!(added_monitors.len(), 1);
- }
- added_monitors.clear();
- }
+ check_added_monitors!($node_a, 1);
extra_msg_option
}
};
{
commitment_signed_dance!($node_a, $node_b, $commitment_signed, $fail_backwards, true);
if $fail_backwards {
+ expect_pending_htlcs_forwardable!($node_a);
+ check_added_monitors!($node_a, 1);
+
let channel_state = $node_a.node.channel_state.lock().unwrap();
assert_eq!(channel_state.pending_msg_events.len(), 1);
if let MessageSendEvent::UpdateHTLCs { ref node_id, .. } = channel_state.pending_msg_events[0] {
}
}
+macro_rules! expect_pending_htlcs_forwardable {
+ ($node: expr) => {{
+ let events = $node.node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PendingHTLCsForwardable { .. } => { },
+ _ => panic!("Unexpected event"),
+ };
+ let node_ref: &Node = &$node;
+ node_ref.node.channel_state.lock().unwrap().next_forward = Instant::now();
+ $node.node.process_pending_htlc_forwards();
+ }}
+}
+
fn send_along_route(origin_node: &Node, route: Route, expected_route: &[&Node], recv_value: u64) -> (PaymentPreimage, PaymentHash) {
let (our_payment_preimage, our_payment_hash) = get_payment_preimage_hash!(origin_node);
check_added_monitors!(node, 0);
commitment_signed_dance!(node, prev_node, payment_event.commitment_msg, false);
- let events_1 = node.node.get_and_clear_pending_events();
- assert_eq!(events_1.len(), 1);
- match events_1[0] {
- Event::PendingHTLCsForwardable { .. } => { },
- _ => panic!("Unexpected event"),
- };
-
- node.node.channel_state.lock().unwrap().next_forward = Instant::now();
- node.node.process_pending_htlc_forwards();
+ expect_pending_htlcs_forwardable!(node);
if idx == expected_route.len() - 1 {
let events_2 = node.node.get_and_clear_pending_events();
fn fail_payment_along_route(origin_node: &Node, expected_route: &[&Node], skip_last: bool, our_payment_hash: PaymentHash) {
assert!(expected_route.last().unwrap().node.fail_htlc_backwards(&our_payment_hash, 0));
+ expect_pending_htlcs_forwardable!(expected_route.last().unwrap());
check_added_monitors!(expected_route.last().unwrap(), 1);
let mut next_msgs: Option<(msgs::UpdateFailHTLC, msgs::CommitmentSigned)> = None;
{
$node.node.handle_update_fail_htlc(&$prev_node.node.get_our_node_id(), &next_msgs.as_ref().unwrap().0).unwrap();
commitment_signed_dance!($node, $prev_node, next_msgs.as_ref().unwrap().1, !$last_node);
+ if skip_last && $last_node {
+ expect_pending_htlcs_forwardable!($node);
+ }
}
}
}
check_added_monitors!(nodes[0], 1);
assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty());
- let events = nodes[0].node.get_and_clear_pending_events();
- assert_eq!(events.len(), 1);
- match events[0] {
- Event::PendingHTLCsForwardable { .. } => { },
- _ => panic!("Unexpected event"),
- };
- nodes[0].node.channel_state.lock().unwrap().next_forward = Instant::now();
- nodes[0].node.process_pending_htlc_forwards();
+ expect_pending_htlcs_forwardable!(nodes[0]);
let events = nodes[0].node.get_and_clear_pending_events();
assert_eq!(events.len(), 1);
}
}
-macro_rules! expect_pending_htlcs_forwardable {
- ($node: expr) => {{
- let events = $node.node.get_and_clear_pending_events();
- assert_eq!(events.len(), 1);
- match events[0] {
- Event::PendingHTLCsForwardable { .. } => { },
- _ => panic!("Unexpected event"),
- };
- $node.node.channel_state.lock().unwrap().next_forward = Instant::now();
- $node.node.process_pending_htlc_forwards();
- }}
-}
-
fn do_channel_reserve_test(test_recv: bool) {
use util::rng;
use std::sync::atomic::Ordering;
let commitment_tx = nodes[2].node.channel_state.lock().unwrap().by_id.get(&chan_2.2).unwrap().last_local_commitment_txn.clone();
check_spends!(commitment_tx[0], chan_2.3.clone());
nodes[2].node.fail_htlc_backwards(&payment_hash, 0);
- {
- let mut added_monitors = nodes[2].chan_monitor.added_monitors.lock().unwrap();
- assert_eq!(added_monitors.len(), 1);
- added_monitors.clear();
- }
+ check_added_monitors!(nodes[2], 0);
+ expect_pending_htlcs_forwardable!(nodes[2]);
+ check_added_monitors!(nodes[2], 1);
+
let events = nodes[2].node.get_and_clear_pending_msg_events();
assert_eq!(events.len(), 1);
match events[0] {
}
nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![timeout_tx]}, 1);
+ check_added_monitors!(nodes[1], 0);
let events = nodes[1].node.get_and_clear_pending_msg_events();
- check_added_monitors!(nodes[1], 1);
- assert_eq!(events.len(), 2);
+ assert_eq!(events.len(), 1);
match events[0] {
MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {},
_ => panic!("Unexpected event"),
}
- match events[1] {
+
+
+ expect_pending_htlcs_forwardable!(nodes[1]);
+ check_added_monitors!(nodes[1], 1);
+ let events = nodes[1].node.get_and_clear_pending_msg_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, .. } } => {
assert!(update_add_htlcs.is_empty());
assert!(!update_fail_htlcs.is_empty());
let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42};
nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
+ check_added_monitors!(nodes[1], 0);
let events = nodes[1].node.get_and_clear_pending_msg_events();
- check_added_monitors!(nodes[1], 1);
- assert_eq!(events.len(), 2);
+ assert_eq!(events.len(), 1);
match events[0] {
MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {},
_ => panic!("Unexpected event"),
}
- match events[1] {
+
+ expect_pending_htlcs_forwardable!(nodes[1]);
+ check_added_monitors!(nodes[1], 1);
+ let events = nodes[1].node.get_and_clear_pending_msg_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref commitment_signed, .. } } => {
assert!(update_add_htlcs.is_empty());
assert_eq!(update_fail_htlcs.len(), 1);
let (_, third_payment_hash) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 3000000);
assert!(nodes[2].node.fail_htlc_backwards(&first_payment_hash, 0));
+ expect_pending_htlcs_forwardable!(nodes[2]);
check_added_monitors!(nodes[2], 1);
let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
assert!(updates.update_add_htlcs.is_empty());
// Drop the last RAA from 3 -> 2
assert!(nodes[2].node.fail_htlc_backwards(&second_payment_hash, 0));
+ expect_pending_htlcs_forwardable!(nodes[2]);
check_added_monitors!(nodes[2], 1);
let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
assert!(updates.update_add_htlcs.is_empty());
check_added_monitors!(nodes[2], 1);
assert!(nodes[2].node.fail_htlc_backwards(&third_payment_hash, 0));
+ expect_pending_htlcs_forwardable!(nodes[2]);
check_added_monitors!(nodes[2], 1);
let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
assert!(updates.update_add_htlcs.is_empty());
nodes[1].node.handle_revoke_and_ack(&nodes[2].node.get_our_node_id(), &bs_raa).unwrap();
// One monitor for the new revocation preimage, one as we generate a commitment for
// nodes[0] to fail first_payment_hash backwards.
- check_added_monitors!(nodes[1], 2);
+ check_added_monitors!(nodes[1], 1);
+ let events = nodes[1].node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PendingHTLCsForwardable { .. } => { },
+ _ => panic!("Unexpected event"),
+ };
+ // Deliberately don't process the pending fail-back so they all fail back at once after
+ // block connection just like the !deliver_bs_raa case
}
let mut failed_htlcs = HashSet::new();
nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
let events = nodes[1].node.get_and_clear_pending_events();
- assert_eq!(events.len(), 1);
+ assert_eq!(events.len(), if deliver_bs_raa { 1 } else { 2 });
match events[0] {
Event::PaymentFailed { ref payment_hash, .. } => {
assert_eq!(*payment_hash, fourth_payment_hash);
},
_ => panic!("Unexpected event"),
}
-
if !deliver_bs_raa {
- // If we delivered the RAA already then we already failed first_payment_hash backwards.
- check_added_monitors!(nodes[1], 1);
+ match events[1] {
+ Event::PendingHTLCsForwardable { .. } => { },
+ _ => panic!("Unexpected event"),
+ };
}
+ nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now();
+ nodes[1].node.process_pending_htlc_forwards();
+ check_added_monitors!(nodes[1], 1);
let events = nodes[1].node.get_and_clear_pending_msg_events();
assert_eq!(events.len(), if deliver_bs_raa { 3 } else { 2 });
- match events[if deliver_bs_raa { 2 } else { 0 }] {
+ match events[if deliver_bs_raa { 1 } else { 0 }] {
MessageSendEvent::BroadcastChannelUpdate { msg: msgs::ChannelUpdate { .. } } => {},
_ => panic!("Unexpected event"),
}
_ => panic!("Unexpected event"),
}
}
- // Due to the way backwards-failing occurs we do the updates in two steps.
- let updates = match events[1] {
+ match events[if deliver_bs_raa { 2 } else { 1 }] {
MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fail_htlcs, ref update_fulfill_htlcs, ref update_fail_malformed_htlcs, ref commitment_signed, .. } } => {
assert!(update_add_htlcs.is_empty());
- assert_eq!(update_fail_htlcs.len(), 1);
+ assert_eq!(update_fail_htlcs.len(), 3);
assert!(update_fulfill_htlcs.is_empty());
assert!(update_fail_malformed_htlcs.is_empty());
assert_eq!(nodes[0].node.get_our_node_id(), *node_id);
nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[0]).unwrap();
- nodes[0].node.handle_commitment_signed(&nodes[1].node.get_our_node_id(), commitment_signed).unwrap();
- check_added_monitors!(nodes[0], 1);
- let (as_revoke_and_ack, as_commitment_signed) = get_revoke_commit_msgs!(nodes[0], nodes[1].node.get_our_node_id());
- nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &as_revoke_and_ack).unwrap();
- check_added_monitors!(nodes[1], 1);
- let bs_second_update = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
- nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &as_commitment_signed).unwrap();
- check_added_monitors!(nodes[1], 1);
- let bs_revoke_and_ack = get_event_msg!(nodes[1], MessageSendEvent::SendRevokeAndACK, nodes[0].node.get_our_node_id());
- nodes[0].node.handle_revoke_and_ack(&nodes[1].node.get_our_node_id(), &bs_revoke_and_ack).unwrap();
- check_added_monitors!(nodes[0], 1);
+ nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[1]).unwrap();
+ nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &update_fail_htlcs[2]).unwrap();
- if !deliver_bs_raa {
- // If we delievered B's RAA we got an unknown preimage error, not something
- // that we should update our routing table for.
- let events = nodes[0].node.get_and_clear_pending_msg_events();
- assert_eq!(events.len(), 1);
- match events[0] {
+ commitment_signed_dance!(nodes[0], nodes[1], commitment_signed, false, true);
+
+ let events = nodes[0].node.get_and_clear_pending_msg_events();
+ // If we delievered B's RAA we got an unknown preimage error, not something
+ // that we should update our routing table for.
+ assert_eq!(events.len(), if deliver_bs_raa { 2 } else { 3 });
+ for event in events {
+ match event {
MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
_ => panic!("Unexpected event"),
}
}
let events = nodes[0].node.get_and_clear_pending_events();
- assert_eq!(events.len(), 1);
+ assert_eq!(events.len(), 3);
match events[0] {
Event::PaymentFailed { ref payment_hash, .. } => {
assert!(failed_htlcs.insert(payment_hash.0));
},
_ => panic!("Unexpected event"),
}
-
- bs_second_update
- },
- _ => panic!("Unexpected event"),
- };
-
- assert!(updates.update_add_htlcs.is_empty());
- assert_eq!(updates.update_fail_htlcs.len(), 2);
- assert!(updates.update_fulfill_htlcs.is_empty());
- assert!(updates.update_fail_malformed_htlcs.is_empty());
- nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fail_htlcs[0]).unwrap();
- nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates.update_fail_htlcs[1]).unwrap();
- commitment_signed_dance!(nodes[0], nodes[1], updates.commitment_signed, false, true);
-
- let events = nodes[0].node.get_and_clear_pending_msg_events();
- assert_eq!(events.len(), 2);
- for event in events {
- match event {
- MessageSendEvent::PaymentFailureNetworkUpdate { .. } => {},
- _ => panic!("Unexpected event"),
- }
- }
-
- let events = nodes[0].node.get_and_clear_pending_events();
- assert_eq!(events.len(), 2);
- match events[0] {
- Event::PaymentFailed { ref payment_hash, .. } => {
- assert!(failed_htlcs.insert(payment_hash.0));
- },
- _ => panic!("Unexpected event"),
- }
- match events[1] {
- Event::PaymentFailed { ref payment_hash, .. } => {
- assert!(failed_htlcs.insert(payment_hash.0));
+ match events[1] {
+ Event::PaymentFailed { ref payment_hash, .. } => {
+ assert!(failed_htlcs.insert(payment_hash.0));
+ },
+ _ => panic!("Unexpected event"),
+ }
+ match events[2] {
+ Event::PaymentFailed { ref payment_hash, .. } => {
+ assert!(failed_htlcs.insert(payment_hash.0));
+ },
+ _ => panic!("Unexpected event"),
+ }
},
_ => panic!("Unexpected event"),
}
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();
+ expect_pending_htlcs_forwardable!(nodes[1]);
let mut events_2 = nodes[1].node.get_and_clear_pending_msg_events();
assert_eq!(events_2.len(), 1);
assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
check_added_monitors!(nodes[1], 1);
- let events_4 = nodes[1].node.get_and_clear_pending_events();
- assert_eq!(events_4.len(), 1);
- match events_4[0] {
- Event::PendingHTLCsForwardable { .. } => { },
- _ => panic!("Unexpected event"),
- };
-
- nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now();
- nodes[1].node.process_pending_htlc_forwards();
+ expect_pending_htlcs_forwardable!(nodes[1]);
let events_5 = nodes[1].node.get_and_clear_pending_events();
assert_eq!(events_5.len(), 1);
nodes[1].node.handle_revoke_and_ack(&nodes[0].node.get_our_node_id(), &final_raa).unwrap();
check_added_monitors!(nodes[1], 1);
- let mut events = nodes[1].node.get_and_clear_pending_events();
- assert_eq!(events.len(), 1);
- match events[0] {
- Event::PendingHTLCsForwardable { .. } => { },
- _ => panic!("Unexpected event"),
- };
- nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now();
- nodes[1].node.process_pending_htlc_forwards();
+ expect_pending_htlcs_forwardable!(nodes[1]);
- events = nodes[1].node.get_and_clear_pending_events();
+ let events = nodes[1].node.get_and_clear_pending_events();
assert_eq!(events.len(), 1);
match events[0] {
Event::PaymentReceived { payment_hash, amt } => {
// Fail the payment backwards, failing the monitor update on nodes[1]'s receipt of the RAA
assert!(nodes[2].node.fail_htlc_backwards(&payment_hash_1, 0));
+ expect_pending_htlcs_forwardable!(nodes[2]);
check_added_monitors!(nodes[2], 1);
let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]).unwrap();
commitment_signed_dance!(nodes[1], nodes[0], send_event.commitment_msg, false);
- let events_1 = nodes[1].node.get_and_clear_pending_events();
- assert_eq!(events_1.len(), 1);
- match events_1[0] {
- Event::PendingHTLCsForwardable { .. } => { },
- _ => panic!("Unexpected event"),
- };
-
- nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now();
- nodes[1].node.process_pending_htlc_forwards();
+ expect_pending_htlcs_forwardable!(nodes[1]);
check_added_monitors!(nodes[1], 0);
assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty());
// update_add update.
*nodes[1].chan_monitor.update_ret.lock().unwrap() = Ok(());
nodes[1].node.test_restore_channel_monitor();
- check_added_monitors!(nodes[1], 2);
+ check_added_monitors!(nodes[1], 1);
+ expect_pending_htlcs_forwardable!(nodes[1]);
+ check_added_monitors!(nodes[1], 1);
let mut events_3 = nodes[1].node.get_and_clear_pending_msg_events();
if test_ignore_second_cs {
commitment_signed_dance!(nodes[2], nodes[1], send_event_b.commitment_msg, false);
}
- let events_5 = nodes[2].node.get_and_clear_pending_events();
- assert_eq!(events_5.len(), 1);
- match events_5[0] {
- Event::PendingHTLCsForwardable { .. } => { },
- _ => panic!("Unexpected event"),
- };
-
- nodes[2].node.channel_state.lock().unwrap().next_forward = Instant::now();
- nodes[2].node.process_pending_htlc_forwards();
+ expect_pending_htlcs_forwardable!(nodes[2]);
let events_6 = nodes[2].node.get_and_clear_pending_events();
assert_eq!(events_6.len(), 1);
};
if test_ignore_second_cs {
- let events_7 = nodes[1].node.get_and_clear_pending_events();
- assert_eq!(events_7.len(), 1);
- match events_7[0] {
- Event::PendingHTLCsForwardable { .. } => { },
- _ => panic!("Unexpected event"),
- };
-
- nodes[1].node.channel_state.lock().unwrap().next_forward = Instant::now();
- nodes[1].node.process_pending_htlc_forwards();
+ expect_pending_htlcs_forwardable!(nodes[1]);
check_added_monitors!(nodes[1], 1);
send_event = SendEvent::from_node(&nodes[1]);
nodes[0].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &send_event.msgs[0]).unwrap();
commitment_signed_dance!(nodes[0], nodes[1], send_event.commitment_msg, false);
- let events_8 = nodes[0].node.get_and_clear_pending_events();
- assert_eq!(events_8.len(), 1);
- match events_8[0] {
- Event::PendingHTLCsForwardable { .. } => { },
- _ => panic!("Unexpected event"),
- };
-
- nodes[0].node.channel_state.lock().unwrap().next_forward = Instant::now();
- nodes[0].node.process_pending_htlc_forwards();
+ expect_pending_htlcs_forwardable!(nodes[0]);
let events_9 = nodes[0].node.get_and_clear_pending_events();
assert_eq!(events_9.len(), 1);
check_spends!(htlc_success_txn[1], commitment_txn[0].clone());
nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![htlc_timeout_tx] }, 200);
+ expect_pending_htlcs_forwardable!(nodes[1]);
let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
assert!(htlc_updates.update_add_htlcs.is_empty());
assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
expect_htlc_forward!(&nodes[2]);
expect_event!(&nodes[2], Event::PaymentReceived);
callback_node();
+ expect_pending_htlcs_forwardable!(nodes[2]);
}
let update_2_1 = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id());
// 2 => 1
nodes[1].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &fail_msg).unwrap();
- commitment_signed_dance!(nodes[1], nodes[2], update_2_1.commitment_signed, true, true);
+ commitment_signed_dance!(nodes[1], nodes[2], update_2_1.commitment_signed, true);
// backward fail on 1
let update_1_0 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
run_onion_failure_test("final_incorrect_cltv_expiry", 1, &nodes, &route, &payment_hash, |_| {}, || {
for (_, pending_forwards) in nodes[1].node.channel_state.lock().unwrap().borrow_parts().forward_htlcs.iter_mut() {
for f in pending_forwards.iter_mut() {
- f.forward_info.outgoing_cltv_value += 1;
+ match f {
+ &mut HTLCForwardInfo::AddHTLC { ref mut forward_info, .. } =>
+ forward_info.outgoing_cltv_value += 1,
+ _ => {},
+ }
}
}
}, true, Some(18), None);
// violate amt_to_forward > msg.amount_msat
for (_, pending_forwards) in nodes[1].node.channel_state.lock().unwrap().borrow_parts().forward_htlcs.iter_mut() {
for f in pending_forwards.iter_mut() {
- f.forward_info.amt_to_forward -= 1;
+ match f {
+ &mut HTLCForwardInfo::AddHTLC { ref mut forward_info, .. } =>
+ forward_info.amt_to_forward -= 1,
+ _ => {},
+ }
}
}
}, true, Some(19), None);
-use ln::channelmanager::PaymentHash;
+use ln::channelmanager::{PaymentHash, HTLCSource};
use ln::msgs;
use ln::router::{Route,RouteHop};
-use util::internal_traits;
+use util::{byte_utils, internal_traits};
use util::chacha20::ChaCha20;
-use util::errors::APIError;
-use util::ser::Writeable;
+use util::errors::{self, APIError};
+use util::ser::{Readable, Writeable};
+use util::logger::Logger;
use bitcoin_hashes::{Hash, HashEngine};
+use bitcoin_hashes::cmp::fixed_time_eq;
use bitcoin_hashes::hmac::{Hmac, HmacEngine};
use bitcoin_hashes::sha256::Hash as Sha256;
use secp256k1;
use std::ptr;
+use std::io::Cursor;
+use std::sync::Arc;
pub(super) struct OnionKeys {
#[cfg(test)]
encrypt_failure_packet(shared_secret, &failure_packet.encode()[..])
}
+struct LogHolder<'a> { logger: &'a Arc<Logger> }
+/// Process failure we got back from upstream on a payment we sent (implying htlc_source is an
+/// OutboundRoute).
+/// Returns update, a boolean indicating that the payment itself failed, and the error code.
+pub(super) fn process_onion_failure<T: secp256k1::Signing>(secp_ctx: &Secp256k1<T>, logger: &Arc<Logger>, htlc_source: &HTLCSource, mut packet_decrypted: Vec<u8>) -> (Option<msgs::HTLCFailChannelUpdate>, bool, Option<u16>) {
+ if let &HTLCSource::OutboundRoute { ref route, ref session_priv, ref first_hop_htlc_msat } = htlc_source {
+ let mut res = None;
+ let mut htlc_msat = *first_hop_htlc_msat;
+ let mut error_code_ret = None;
+ let mut next_route_hop_ix = 0;
+ let mut is_from_final_node = false;
+
+ // Handle packed channel/node updates for passing back for the route handler
+ construct_onion_keys_callback(secp_ctx, route, session_priv, |shared_secret, _, _, route_hop| {
+ next_route_hop_ix += 1;
+ if res.is_some() { return; }
+
+ let amt_to_forward = htlc_msat - route_hop.fee_msat;
+ htlc_msat = amt_to_forward;
+
+ let ammag = 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;
+
+ is_from_final_node = route.hops.last().unwrap().pubkey == route_hop.pubkey;
+
+ if let Ok(err_packet) = msgs::DecodedOnionErrorPacket::read(&mut Cursor::new(&packet_decrypted)) {
+ let um = gen_um_from_shared_secret(&shared_secret[..]);
+ let mut hmac = HmacEngine::<Sha256>::new(&um);
+ hmac.input(&err_packet.encode()[32..]);
+
+ if fixed_time_eq(&Hmac::from_engine(hmac).into_inner(), &err_packet.hmac) {
+ if let Some(error_code_slice) = err_packet.failuremsg.get(0..2) {
+ const PERM: u16 = 0x4000;
+ const NODE: u16 = 0x2000;
+ const UPDATE: u16 = 0x1000;
+
+ let error_code = byte_utils::slice_to_be16(&error_code_slice);
+ error_code_ret = Some(error_code);
+
+ let (debug_field, debug_field_size) = errors::get_onion_debug_field(error_code);
+
+ // indicate that payment parameter has failed and no need to
+ // update Route object
+ let payment_failed = (match error_code & 0xff {
+ 15|16|17|18|19 => true,
+ _ => false,
+ } && is_from_final_node) // PERM bit observed below even this error is from the intermediate nodes
+ || error_code == 21; // Special case error 21 as the Route object is bogus, TODO: Maybe fail the node if the CLTV was reasonable?
+
+ let mut fail_channel_update = None;
+
+ if error_code & NODE == NODE {
+ fail_channel_update = Some(msgs::HTLCFailChannelUpdate::NodeFailure { node_id: route_hop.pubkey, is_permanent: error_code & PERM == PERM });
+ }
+ else if error_code & PERM == PERM {
+ fail_channel_update = if payment_failed {None} else {Some(msgs::HTLCFailChannelUpdate::ChannelClosed {
+ short_channel_id: route.hops[next_route_hop_ix - if next_route_hop_ix == route.hops.len() { 1 } else { 0 }].short_channel_id,
+ is_permanent: true,
+ })};
+ }
+ else if error_code & UPDATE == UPDATE {
+ if let Some(update_len_slice) = err_packet.failuremsg.get(debug_field_size+2..debug_field_size+4) {
+ let update_len = byte_utils::slice_to_be16(&update_len_slice) as usize;
+ if let Some(update_slice) = err_packet.failuremsg.get(debug_field_size + 4..debug_field_size + 4 + update_len) {
+ if let Ok(chan_update) = msgs::ChannelUpdate::read(&mut Cursor::new(&update_slice)) {
+ // if channel_update should NOT have caused the failure:
+ // MAY treat the channel_update as invalid.
+ let is_chan_update_invalid = match error_code & 0xff {
+ 7 => false,
+ 11 => amt_to_forward > chan_update.contents.htlc_minimum_msat,
+ 12 => {
+ let new_fee = amt_to_forward.checked_mul(chan_update.contents.fee_proportional_millionths as u64).and_then(|prop_fee| { (prop_fee / 1000000).checked_add(chan_update.contents.fee_base_msat as u64) });
+ new_fee.is_some() && route_hop.fee_msat >= new_fee.unwrap()
+ }
+ 13 => route_hop.cltv_expiry_delta as u16 >= chan_update.contents.cltv_expiry_delta,
+ 14 => false, // expiry_too_soon; always valid?
+ 20 => chan_update.contents.flags & 2 == 0,
+ _ => false, // unknown error code; take channel_update as valid
+ };
+ fail_channel_update = if is_chan_update_invalid {
+ // This probably indicates the node which forwarded
+ // to the node in question corrupted something.
+ Some(msgs::HTLCFailChannelUpdate::ChannelClosed {
+ short_channel_id: route_hop.short_channel_id,
+ is_permanent: true,
+ })
+ } else {
+ Some(msgs::HTLCFailChannelUpdate::ChannelUpdateMessage {
+ msg: chan_update,
+ })
+ };
+ }
+ }
+ }
+ if fail_channel_update.is_none() {
+ // They provided an UPDATE which was obviously bogus, not worth
+ // trying to relay through them anymore.
+ fail_channel_update = Some(msgs::HTLCFailChannelUpdate::NodeFailure {
+ node_id: route_hop.pubkey,
+ is_permanent: true,
+ });
+ }
+ } else if !payment_failed {
+ // We can't understand their error messages and they failed to
+ // forward...they probably can't understand our forwards so its
+ // really not worth trying any further.
+ fail_channel_update = Some(msgs::HTLCFailChannelUpdate::NodeFailure {
+ node_id: route_hop.pubkey,
+ is_permanent: true,
+ });
+ }
+
+ // TODO: Here (and a few other places) we assume that BADONION errors
+ // are always "sourced" from the node previous to the one which failed
+ // to decode the onion.
+ res = Some((fail_channel_update, !(error_code & PERM == PERM && is_from_final_node)));
+
+ let (description, title) = errors::get_onion_error_description(error_code);
+ if debug_field_size > 0 && err_packet.failuremsg.len() >= 4 + debug_field_size {
+ let log_holder = LogHolder { logger };
+ log_warn!(log_holder, "Onion Error[{}({:#x}) {}({})] {}", title, error_code, debug_field, log_bytes!(&err_packet.failuremsg[4..4+debug_field_size]), description);
+ }
+ else {
+ let log_holder = LogHolder { logger };
+ log_warn!(log_holder, "Onion Error[{}({:#x})] {}", title, error_code, description);
+ }
+ } else {
+ // Useless packet that we can't use but it passed HMAC, so it
+ // definitely came from the peer in question
+ res = Some((Some(msgs::HTLCFailChannelUpdate::NodeFailure {
+ node_id: route_hop.pubkey,
+ is_permanent: true,
+ }), !is_from_final_node));
+ }
+ }
+ }
+ }).expect("Route that we sent via spontaneously grew invalid keys in the middle of it?");
+ if let Some((channel_update, payment_retryable)) = res {
+ (channel_update, payment_retryable, error_code_ret)
+ } else {
+ // only not set either packet unparseable or hmac does not match with any
+ // payment not retryable only when garbage is from the final node
+ (None, !is_from_final_node, None)
+ }
+ } else { unreachable!(); }
+}
+
#[cfg(test)]
mod tests {
use ln::channelmanager::PaymentHash;
projects / rust-lightning / commitdiff