claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage_success);
// If the hop gives fee_insufficient but enough fees were provided, then the previous hop
- // malleated the payment before forwarding, taking funds when they shouldn't have.
+ // malleated the payment before forwarding, taking funds when they shouldn't have. However,
+ // because we ignore channel update contents, we will still blame the 2nd channel.
let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
- let short_channel_id = channels[0].0.contents.short_channel_id;
+ let short_channel_id = channels[1].0.contents.short_channel_id;
run_onion_failure_test("fee_insufficient", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| {
msg.amount_msat -= 1;
- }, || {}, true, Some(UPDATE|12), Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: true}), Some(short_channel_id));
+ }, || {}, true, Some(UPDATE|12), Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: false}), Some(short_channel_id));
// In an earlier version, we spuriously failed to forward payments if the expected feerate
// changed between the channel open and the payment.
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
msg.reason = onion_utils::build_first_hop_failure_packet(onion_keys[0].shared_secret.as_ref(), UPDATE|7, &err_data);
- }, ||{}, true, Some(UPDATE|7), Some(NetworkUpdate::ChannelUpdateMessage{msg: chan_update.clone()}), Some(short_channel_id));
+ }, ||{}, true, Some(UPDATE|7),
+ Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: false }),
+ Some(short_channel_id));
// Check we can still handle onion failures that include channel updates without a type prefix
let err_data_without_type = chan_update.encode_with_len();
let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
msg.reason = onion_utils::build_first_hop_failure_packet(onion_keys[0].shared_secret.as_ref(), UPDATE|7, &err_data_without_type);
- }, ||{}, true, Some(UPDATE|7), Some(NetworkUpdate::ChannelUpdateMessage{msg: chan_update}), Some(short_channel_id));
+ }, ||{}, true, Some(UPDATE|7),
+ Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: false }),
+ Some(short_channel_id));
let short_channel_id = channels[1].0.contents.short_channel_id;
run_onion_failure_test_with_fail_intercept("permanent_channel_failure", 100, &nodes, &route, &payment_hash, &payment_secret, |msg| {
let mut bogus_route = route.clone();
let route_len = bogus_route.paths[0].hops.len();
bogus_route.paths[0].hops[route_len-1].fee_msat = amt_to_forward;
- run_onion_failure_test("amount_below_minimum", 0, &nodes, &bogus_route, &payment_hash, &payment_secret, |_| {}, ||{}, true, Some(UPDATE|11), Some(NetworkUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy(short_channel_id)}), Some(short_channel_id));
+ run_onion_failure_test("amount_below_minimum", 0, &nodes, &bogus_route, &payment_hash, &payment_secret, |_| {}, ||{}, true, Some(UPDATE|11),
+ Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: false }),
+ Some(short_channel_id));
// Clear pending payments so that the following positive test has the correct payment hash.
for node in nodes.iter() {
let preimage = send_along_route(&nodes[0], bogus_route, &[&nodes[1], &nodes[2]], amt_to_forward+1).0;
claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], preimage);
- let short_channel_id = channels[0].0.contents.short_channel_id;
+ // We ignore channel update contents in onion errors, so will blame the 2nd channel even though
+ // the first node is the one that messed up.
+ let short_channel_id = channels[1].0.contents.short_channel_id;
run_onion_failure_test("fee_insufficient", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| {
msg.amount_msat -= 1;
- }, || {}, true, Some(UPDATE|12), Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: true}), Some(short_channel_id));
+ }, || {}, true, Some(UPDATE|12), Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: false}), Some(short_channel_id));
- let short_channel_id = channels[0].0.contents.short_channel_id;
+ let short_channel_id = channels[1].0.contents.short_channel_id;
run_onion_failure_test("incorrect_cltv_expiry", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| {
// need to violate: cltv_expiry - cltv_expiry_delta >= outgoing_cltv_value
msg.cltv_expiry -= 1;
- }, || {}, true, Some(UPDATE|13), Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: true}), Some(short_channel_id));
+ }, || {}, true, Some(UPDATE|13), Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: false}), Some(short_channel_id));
let short_channel_id = channels[1].0.contents.short_channel_id;
run_onion_failure_test("expiry_too_soon", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| {
connect_blocks(&nodes[0], height - nodes[0].best_block_info().1);
connect_blocks(&nodes[1], height - nodes[1].best_block_info().1);
connect_blocks(&nodes[2], height - nodes[2].best_block_info().1);
- }, ||{}, true, Some(UPDATE|14), Some(NetworkUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy(short_channel_id)}), Some(short_channel_id));
+ }, ||{}, true, Some(UPDATE|14),
+ Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: false }),
+ Some(short_channel_id));
run_onion_failure_test("unknown_payment_hash", 2, &nodes, &route, &payment_hash, &payment_secret, |_| {}, || {
nodes[2].node.fail_htlc_backwards(&payment_hash);
// disconnect event to the channel between nodes[1] ~ nodes[2]
nodes[1].node.peer_disconnected(&nodes[2].node.get_our_node_id());
nodes[2].node.peer_disconnected(&nodes[1].node.get_our_node_id());
- }, true, Some(UPDATE|7), Some(NetworkUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy(short_channel_id)}), Some(short_channel_id));
+ }, true, Some(UPDATE|7),
+ Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: false }),
+ Some(short_channel_id));
run_onion_failure_test("channel_disabled", 0, &nodes, &route, &payment_hash, &payment_secret, |_| {}, || {
// disconnect event to the channel between nodes[1] ~ nodes[2]
for _ in 0..DISABLE_GOSSIP_TICKS + 1 {
}
nodes[1].node.get_and_clear_pending_msg_events();
nodes[2].node.get_and_clear_pending_msg_events();
- }, true, Some(UPDATE|20), Some(NetworkUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy(short_channel_id)}), Some(short_channel_id));
+ }, true, Some(UPDATE|20),
+ Some(NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: false }),
+ Some(short_channel_id));
reconnect_nodes(ReconnectArgs::new(&nodes[1], &nodes[2]));
run_onion_failure_test("expiry_too_far", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| {
// We'll be attempting to route payments using the default ChannelUpdate for channels. This will
// lead to onion failures at the first hop once we update the ChannelConfig for the
// second hop.
- let expect_onion_failure = |name: &str, error_code: u16, channel_update: &msgs::ChannelUpdate| {
+ let expect_onion_failure = |name: &str, error_code: u16| {
let short_channel_id = channel_to_update.1;
- let network_update = NetworkUpdate::ChannelUpdateMessage { msg: channel_update.clone() };
+ let network_update = NetworkUpdate::ChannelFailure { short_channel_id, is_permanent: false };
run_onion_failure_test(
name, 0, &nodes, &route, &payment_hash, &payment_secret, |_| {}, || {}, true,
Some(error_code), Some(network_update), Some(short_channel_id),
// Connect a block, which should expire the previous config, leading to a failure when
// forwarding the HTLC.
expire_prev_config();
- expect_onion_failure("fee_insufficient", UPDATE|12, &msg);
+ expect_onion_failure("fee_insufficient", UPDATE|12);
// Redundant updates should not trigger a new ChannelUpdate.
assert!(update_and_get_channel_update(&config, false, None, false).is_none());
// new ChannelUpdate.
config.forwarding_fee_base_msat = default_config.forwarding_fee_base_msat;
config.cltv_expiry_delta = u16::max_value();
- let msg = update_and_get_channel_update(&config, true, Some(&msg), true).unwrap();
- expect_onion_failure("incorrect_cltv_expiry", UPDATE|13, &msg);
+ assert!(update_and_get_channel_update(&config, true, Some(&msg), true).is_some());
+ expect_onion_failure("incorrect_cltv_expiry", UPDATE|13);
// Reset the proportional fee and increase the CLTV expiry delta which should trigger a new
// ChannelUpdate.
config.cltv_expiry_delta = default_config.cltv_expiry_delta;
config.forwarding_fee_proportional_millionths = u32::max_value();
- let msg = update_and_get_channel_update(&config, true, Some(&msg), true).unwrap();
- expect_onion_failure("fee_insufficient", UPDATE|12, &msg);
+ assert!(update_and_get_channel_update(&config, true, Some(&msg), true).is_some());
+ expect_onion_failure("fee_insufficient", UPDATE|12);
// To test persistence of the updated config, we'll re-initialize the ChannelManager.
let config_after_restart = {
err_data.extend_from_slice(&channel.1.encode());
let mut fail_conditions = PaymentFailedConditions::new()
- .blamed_scid(channel.0.contents.short_channel_id)
+ .blamed_scid(route.paths[0].hops.last().as_ref().unwrap().short_channel_id)
.blamed_chan_closed(false)
.expected_htlc_error_data(0x1000 | 7, &err_data);
- expect_payment_failed_conditions(&nodes[0], payment_hash, false, fail_conditions);
+ expect_payment_failed_conditions(&nodes[0], payment_hash, false, fail_conditions);
}
#[test]
use crate::ln::features::{ChannelFeatures, NodeFeatures};
use crate::ln::msgs;
use crate::ln::types::{PaymentHash, PaymentPreimage};
-use crate::ln::wire::Encode;
use crate::routing::gossip::NetworkUpdate;
use crate::routing::router::{Path, RouteHop, RouteParameters};
use crate::sign::NodeSigner;
{
let update_len =
u16::from_be_bytes(update_len_slice.try_into().expect("len is 2")) as usize;
- if let Some(mut update_slice) = err_packet
+ if err_packet
.failuremsg
.get(debug_field_size + 4..debug_field_size + 4 + update_len)
+ .is_some()
{
- // Historically, the BOLTs were unclear if the message type
- // bytes should be included here or not. The BOLTs have now
- // been updated to indicate that they *are* included, but many
- // nodes still send messages without the type bytes, so we
- // support both here.
- // TODO: Switch to hard require the type prefix, as the current
- // permissiveness introduces the (although small) possibility
- // that we fail to decode legitimate channel updates that
- // happen to start with ChannelUpdate::TYPE, i.e., [0x01, 0x02].
- if update_slice.len() > 2
- && update_slice[0..2] == msgs::ChannelUpdate::TYPE.to_be_bytes()
- {
- update_slice = &update_slice[2..];
- } else {
- log_trace!(logger, "Failure provided features a channel update without type prefix. Deprecated, but allowing for now.");
- }
- let update_opt = msgs::ChannelUpdate::read(&mut Cursor::new(&update_slice));
- if update_opt.is_ok() || update_slice.is_empty() {
- // 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 => {
- update_opt.is_ok()
- && amt_to_forward
- > update_opt.as_ref().unwrap().contents.htlc_minimum_msat
- },
- 12 => {
- update_opt.is_ok()
- && amt_to_forward
- .checked_mul(
- update_opt
- .as_ref()
- .unwrap()
- .contents
- .fee_proportional_millionths as u64,
- )
- .map(|prop_fee| prop_fee / 1_000_000)
- .and_then(|prop_fee| {
- prop_fee.checked_add(
- update_opt.as_ref().unwrap().contents.fee_base_msat
- as u64,
- )
- })
- .map(|fee_msats| route_hop.fee_msat >= fee_msats)
- .unwrap_or(false)
- },
- 13 => {
- update_opt.is_ok()
- && route_hop.cltv_expiry_delta as u16
- >= update_opt.as_ref().unwrap().contents.cltv_expiry_delta
- },
- 14 => false, // expiry_too_soon; always valid?
- 20 => update_opt.as_ref().unwrap().contents.flags & 2 == 0,
- _ => false, // unknown error code; take channel_update as valid
- };
- if is_chan_update_invalid {
- // This probably indicates the node which forwarded
- // to the node in question corrupted something.
- network_update = Some(NetworkUpdate::ChannelFailure {
- short_channel_id: route_hop.short_channel_id,
- is_permanent: true,
- });
- } else {
- if let Ok(chan_update) = update_opt {
- // Make sure the ChannelUpdate contains the expected
- // short channel id.
- if failing_route_hop.short_channel_id
- == chan_update.contents.short_channel_id
- {
- short_channel_id = Some(failing_route_hop.short_channel_id);
- } else {
- log_info!(logger, "Node provided a channel_update for which it was not authoritative, ignoring.");
- }
- network_update =
- Some(NetworkUpdate::ChannelUpdateMessage { msg: chan_update })
- } else {
- // The node in question intentionally encoded a 0-length channel update. This is
- // likely due to https://github.com/ElementsProject/lightning/issues/6200.
- short_channel_id = Some(failing_route_hop.short_channel_id);
- network_update = Some(NetworkUpdate::ChannelFailure {
- short_channel_id: failing_route_hop.short_channel_id,
- is_permanent: false,
- });
- }
- };
- } else {
- // If the channel_update had a non-zero length (i.e. was
- // present) but we couldn't read it, treat it as a total
- // node failure.
- log_info!(
- logger,
- "Failed to read a channel_update of len {} in an onion",
- update_slice.len()
- );
- }
+ network_update = Some(NetworkUpdate::ChannelFailure {
+ short_channel_id: failing_route_hop.short_channel_id,
+ is_permanent: false,
+ });
+ short_channel_id = Some(failing_route_hop.short_channel_id);
}
}
if network_update.is_none() {
projects / rust-lightning / commitdiff