use bitcoin::secp256k1::{SecretKey,PublicKey};
use bitcoin::secp256k1::Secp256k1;
use bitcoin::secp256k1::ecdh::SharedSecret;
-use bitcoin::secp256k1;
+use bitcoin::{LockTime, secp256k1, Sequence};
-use chain;
-use chain::{Confirm, ChannelMonitorUpdateErr, Watch, BestBlock};
-use chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
-use chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateStep, HTLC_FAIL_BACK_BUFFER, CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS, ANTI_REORG_DELAY, MonitorEvent, CLOSED_CHANNEL_UPDATE_ID};
-use chain::transaction::{OutPoint, TransactionData};
+use crate::chain;
+use crate::chain::{Confirm, ChannelMonitorUpdateStatus, Watch, BestBlock};
+use crate::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator, LowerBoundedFeeEstimator};
+use crate::chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateStep, HTLC_FAIL_BACK_BUFFER, CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS, ANTI_REORG_DELAY, MonitorEvent, CLOSED_CHANNEL_UPDATE_ID};
+use crate::chain::transaction::{OutPoint, TransactionData};
// Since this struct is returned in `list_channels` methods, expose it here in case users want to
// construct one themselves.
-use ln::{inbound_payment, PaymentHash, PaymentPreimage, PaymentSecret};
-use ln::channel::{Channel, ChannelError, ChannelUpdateStatus, UpdateFulfillCommitFetch};
-use ln::features::{ChannelTypeFeatures, InitFeatures, NodeFeatures};
-use routing::router::{PaymentParameters, Route, RouteHop, RoutePath, RouteParameters};
-use ln::msgs;
-use ln::msgs::NetAddress;
-use ln::onion_utils;
-use ln::msgs::{ChannelMessageHandler, DecodeError, LightningError, MAX_VALUE_MSAT, OptionalField};
-use ln::wire::Encode;
-use chain::keysinterface::{Sign, KeysInterface, KeysManager, InMemorySigner, Recipient};
-use util::config::UserConfig;
-use util::events::{EventHandler, EventsProvider, MessageSendEvent, MessageSendEventsProvider, ClosureReason};
-use util::{byte_utils, events};
-use util::scid_utils::fake_scid;
-use util::ser::{BigSize, FixedLengthReader, Readable, ReadableArgs, MaybeReadable, Writeable, Writer, VecWriter};
-use util::logger::{Level, Logger};
-use util::errors::APIError;
-
-use io;
-use prelude::*;
+use crate::ln::{inbound_payment, PaymentHash, PaymentPreimage, PaymentSecret};
+use crate::ln::channel::{Channel, ChannelError, ChannelUpdateStatus, UpdateFulfillCommitFetch};
+use crate::ln::features::{ChannelFeatures, ChannelTypeFeatures, InitFeatures, NodeFeatures};
+#[cfg(any(feature = "_test_utils", test))]
+use crate::ln::features::InvoiceFeatures;
+use crate::routing::gossip::NetworkGraph;
+use crate::routing::router::{DefaultRouter, InFlightHtlcs, PaymentParameters, Route, RouteHop, RoutePath, Router};
+use crate::routing::scoring::ProbabilisticScorer;
+use crate::ln::msgs;
+use crate::ln::onion_utils;
+use crate::ln::onion_utils::HTLCFailReason;
+use crate::ln::msgs::{ChannelMessageHandler, DecodeError, LightningError, MAX_VALUE_MSAT};
+#[cfg(test)]
+use crate::ln::outbound_payment;
+use crate::ln::outbound_payment::{OutboundPayments, PendingOutboundPayment};
+use crate::ln::wire::Encode;
+use crate::chain::keysinterface::{EntropySource, KeysInterface, KeysManager, NodeSigner, Recipient, Sign, SignerProvider};
+use crate::util::config::{UserConfig, ChannelConfig};
+use crate::util::events::{Event, EventHandler, EventsProvider, MessageSendEvent, MessageSendEventsProvider, ClosureReason, HTLCDestination};
+use crate::util::events;
+use crate::util::wakers::{Future, Notifier};
+use crate::util::scid_utils::fake_scid;
+use crate::util::ser::{BigSize, FixedLengthReader, Readable, ReadableArgs, MaybeReadable, Writeable, Writer, VecWriter};
+use crate::util::logger::{Level, Logger};
+use crate::util::errors::APIError;
+
+use crate::io;
+use crate::prelude::*;
use core::{cmp, mem};
use core::cell::RefCell;
-use io::Read;
-use sync::{Arc, Condvar, Mutex, MutexGuard, RwLock, RwLockReadGuard};
+use crate::io::Read;
+use crate::sync::{Arc, Mutex, MutexGuard, RwLock, RwLockReadGuard, FairRwLock};
use core::sync::atomic::{AtomicUsize, Ordering};
use core::time::Duration;
use core::ops::Deref;
-#[cfg(any(test, feature = "std"))]
-use std::time::Instant;
-use util::crypto::sign;
+// Re-export this for use in the public API.
+pub use crate::ln::outbound_payment::PaymentSendFailure;
// We hold various information about HTLC relay in the HTLC objects in Channel itself:
//
pub(super) enum PendingHTLCRouting {
Forward {
onion_packet: msgs::OnionPacket,
- /// The SCID from the onion that we should forward to. This could be a "real" SCID, an
- /// outbound SCID alias, or a phantom node SCID.
+ /// The SCID from the onion that we should forward to. This could be a real SCID or a fake one
+ /// generated using `get_fake_scid` from the scid_utils::fake_scid module.
short_channel_id: u64, // This should be NonZero<u64> eventually when we bump MSRV
},
Receive {
pub(super) routing: PendingHTLCRouting,
pub(super) incoming_shared_secret: [u8; 32],
payment_hash: PaymentHash,
- pub(super) amt_to_forward: u64,
+ pub(super) incoming_amt_msat: Option<u64>, // Added in 0.0.113
+ pub(super) outgoing_amt_msat: u64,
pub(super) outgoing_cltv_value: u32,
}
Fail(HTLCFailureMsg),
}
-pub(super) enum HTLCForwardInfo {
- AddHTLC {
- forward_info: PendingHTLCInfo,
+pub(super) struct PendingAddHTLCInfo {
+ pub(super) forward_info: PendingHTLCInfo,
- // These fields are produced in `forward_htlcs()` and consumed in
- // `process_pending_htlc_forwards()` for constructing the
- // `HTLCSource::PreviousHopData` for failed and forwarded
- // HTLCs.
- //
- // Note that this may be an outbound SCID alias for the associated channel.
- prev_short_channel_id: u64,
- prev_htlc_id: u64,
- prev_funding_outpoint: OutPoint,
- },
+ // These fields are produced in `forward_htlcs()` and consumed in
+ // `process_pending_htlc_forwards()` for constructing the
+ // `HTLCSource::PreviousHopData` for failed and forwarded
+ // HTLCs.
+ //
+ // Note that this may be an outbound SCID alias for the associated channel.
+ prev_short_channel_id: u64,
+ prev_htlc_id: u64,
+ prev_funding_outpoint: OutPoint,
+ prev_user_channel_id: u128,
+}
+
+pub(super) enum HTLCForwardInfo {
+ AddHTLC(PendingAddHTLCInfo),
FailHTLC {
htlc_id: u64,
err_packet: msgs::OnionErrorPacket,
Ok(PaymentId(buf))
}
}
+
+/// An identifier used to uniquely identify an intercepted HTLC to LDK.
+/// (C-not exported) as we just use [u8; 32] directly
+#[derive(Hash, Copy, Clone, PartialEq, Eq, Debug)]
+pub struct InterceptId(pub [u8; 32]);
+
+impl Writeable for InterceptId {
+ fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
+ self.0.write(w)
+ }
+}
+
+impl Readable for InterceptId {
+ fn read<R: Read>(r: &mut R) -> Result<Self, DecodeError> {
+ let buf: [u8; 32] = Readable::read(r)?;
+ Ok(InterceptId(buf))
+ }
+}
/// Tracks the inbound corresponding to an outbound HTLC
#[allow(clippy::derive_hash_xor_eq)] // Our Hash is faithful to the data, we just don't have SecretKey::hash
#[derive(Clone, PartialEq, Eq)]
}
}
-#[derive(Clone)] // See Channel::revoke_and_ack for why, tl;dr: Rust bug
-pub(super) enum HTLCFailReason {
- LightningError {
- err: msgs::OnionErrorPacket,
- },
- Reason {
- failure_code: u16,
- data: Vec<u8>,
- }
-}
-
struct ReceiveError {
err_code: u16,
err_data: Vec<u8>,
msg: &'static str,
}
-/// Return value for claim_funds_from_hop
-enum ClaimFundsFromHop {
- PrevHopForceClosed,
- MonitorUpdateFail(PublicKey, MsgHandleErrInternal, Option<u64>),
- Success(u64),
- DuplicateClaim,
-}
-
-type ShutdownResult = (Option<(OutPoint, ChannelMonitorUpdate)>, Vec<(HTLCSource, PaymentHash)>);
+type ShutdownResult = (Option<(OutPoint, ChannelMonitorUpdate)>, Vec<(HTLCSource, PaymentHash, PublicKey, [u8; 32])>);
-/// Error type returned across the channel_state mutex boundary. When an Err is generated for a
+/// Error type returned across the peer_state mutex boundary. When an Err is generated for a
/// Channel, we generally end up with a ChannelError::Close for which we have to close the channel
/// immediately (ie with no further calls on it made). Thus, this step happens inside a
-/// channel_state lock. We then return the set of things that need to be done outside the lock in
+/// peer_state lock. We then return the set of things that need to be done outside the lock in
/// this struct and call handle_error!() on it.
struct MsgHandleErrInternal {
err: msgs::LightningError,
- chan_id: Option<([u8; 32], u64)>, // If Some a channel of ours has been closed
+ chan_id: Option<([u8; 32], u128)>, // If Some a channel of ours has been closed
shutdown_finish: Option<(ShutdownResult, Option<msgs::ChannelUpdate>)>,
}
impl MsgHandleErrInternal {
Self { err, chan_id: None, shutdown_finish: None }
}
#[inline]
- fn from_finish_shutdown(err: String, channel_id: [u8; 32], user_channel_id: u64, shutdown_res: ShutdownResult, channel_update: Option<msgs::ChannelUpdate>) -> Self {
+ fn from_finish_shutdown(err: String, channel_id: [u8; 32], user_channel_id: u128, shutdown_res: ShutdownResult, channel_update: Option<msgs::ChannelUpdate>) -> Self {
Self {
err: LightningError {
err: err.clone(),
},
},
},
- ChannelError::CloseDelayBroadcast(msg) => LightningError {
- err: msg.clone(),
- action: msgs::ErrorAction::SendErrorMessage {
- msg: msgs::ErrorMessage {
- channel_id,
- data: msg
- },
- },
- },
},
chan_id: None,
shutdown_finish: None,
RevokeAndACKFirst,
}
-// Note this is only exposed in cfg(test):
-pub(super) struct ChannelHolder<Signer: Sign> {
- pub(super) by_id: HashMap<[u8; 32], Channel<Signer>>,
- /// SCIDs (and outbound SCID aliases) to the real channel id. Outbound SCID aliases are added
- /// here once the channel is available for normal use, with SCIDs being added once the funding
- /// transaction is confirmed at the channel's required confirmation depth.
- pub(super) short_to_id: HashMap<u64, [u8; 32]>,
- /// SCID/SCID Alias -> forward infos. Key of 0 means payments received.
- ///
- /// Note that because we may have an SCID Alias as the key we can have two entries per channel,
- /// though in practice we probably won't be receiving HTLCs for a channel both via the alias
- /// and via the classic SCID.
- ///
- /// Note that while this is held in the same mutex as the channels themselves, no consistency
- /// guarantees are made about the existence of a channel with the short id here, nor the short
- /// ids in the PendingHTLCInfo!
- pub(super) forward_htlcs: HashMap<u64, Vec<HTLCForwardInfo>>,
+/// Information about a payment which is currently being claimed.
+struct ClaimingPayment {
+ amount_msat: u64,
+ payment_purpose: events::PaymentPurpose,
+ receiver_node_id: PublicKey,
+}
+impl_writeable_tlv_based!(ClaimingPayment, {
+ (0, amount_msat, required),
+ (2, payment_purpose, required),
+ (4, receiver_node_id, required),
+});
+
+/// Information about claimable or being-claimed payments
+struct ClaimablePayments {
/// Map from payment hash to the payment data and any HTLCs which are to us and can be
/// failed/claimed by the user.
///
- /// 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!
+ /// Note that, no consistency guarantees are made about the channels given here actually
+ /// existing anymore by the time you go to read them!
+ ///
+ /// When adding to the map, [`Self::pending_claiming_payments`] must also be checked to ensure
+ /// we don't get a duplicate payment.
claimable_htlcs: HashMap<PaymentHash, (events::PaymentPurpose, Vec<ClaimableHTLC>)>,
+
+ /// Map from payment hash to the payment data for HTLCs which we have begun claiming, but which
+ /// are waiting on a [`ChannelMonitorUpdate`] to complete in order to be surfaced to the user
+ /// as an [`events::Event::PaymentClaimed`].
+ pending_claiming_payments: HashMap<PaymentHash, ClaimingPayment>,
+}
+
+// Note this is only exposed in cfg(test):
+pub(super) struct ChannelHolder {
/// Messages to send to peers - pushed to in the same lock that they are generated in (except
/// for broadcast messages, where ordering isn't as strict).
pub(super) pending_msg_events: Vec<MessageSendEvent>,
ClosingMonitorUpdate((OutPoint, ChannelMonitorUpdate)),
}
-/// State we hold per-peer. In the future we should put channels in here, but for now we only hold
-/// the latest Init features we heard from the peer.
-struct PeerState {
+pub(crate) enum MonitorUpdateCompletionAction {
+ /// Indicates that a payment ultimately destined for us was claimed and we should emit an
+ /// [`events::Event::PaymentClaimed`] to the user if we haven't yet generated such an event for
+ /// this payment. Note that this is only best-effort. On restart it's possible such a duplicate
+ /// event can be generated.
+ PaymentClaimed { payment_hash: PaymentHash },
+ /// Indicates an [`events::Event`] should be surfaced to the user.
+ EmitEvent { event: events::Event },
+}
+
+/// State we hold per-peer.
+pub(super) struct PeerState<Signer: Sign> {
+ /// `temporary_channel_id` or `channel_id` -> `channel`.
+ ///
+ /// Holds all channels where the peer is the counterparty. Once a channel has been assigned a
+ /// `channel_id`, the `temporary_channel_id` key in the map is updated and is replaced by the
+ /// `channel_id`.
+ pub(super) channel_by_id: HashMap<[u8; 32], Channel<Signer>>,
+ /// The latest `InitFeatures` we heard from the peer.
latest_features: InitFeatures,
}
min_value_msat: Option<u64>,
}
-/// Stores the session_priv for each part of a payment that is still pending. For versions 0.0.102
-/// and later, also stores information for retrying the payment.
-pub(crate) enum PendingOutboundPayment {
- Legacy {
- session_privs: HashSet<[u8; 32]>,
- },
- Retryable {
- session_privs: HashSet<[u8; 32]>,
- payment_hash: PaymentHash,
- payment_secret: Option<PaymentSecret>,
- pending_amt_msat: u64,
- /// Used to track the fee paid. Only present if the payment was serialized on 0.0.103+.
- pending_fee_msat: Option<u64>,
- /// The total payment amount across all paths, used to verify that a retry is not overpaying.
- total_msat: u64,
- /// Our best known block height at the time this payment was initiated.
- starting_block_height: u32,
- },
- /// When a pending payment is fulfilled, we continue tracking it until all pending HTLCs have
- /// been resolved. This ensures we don't look up pending payments in ChannelMonitors on restart
- /// and add a pending payment that was already fulfilled.
- Fulfilled {
- session_privs: HashSet<[u8; 32]>,
- payment_hash: Option<PaymentHash>,
- },
- /// When a payer gives up trying to retry a payment, they inform us, letting us generate a
- /// `PaymentFailed` event when all HTLCs have irrevocably failed. This avoids a number of race
- /// conditions in MPP-aware payment retriers (1), where the possibility of multiple
- /// `PaymentPathFailed` events with `all_paths_failed` can be pending at once, confusing a
- /// downstream event handler as to when a payment has actually failed.
- ///
- /// (1) https://github.com/lightningdevkit/rust-lightning/issues/1164
- Abandoned {
- session_privs: HashSet<[u8; 32]>,
- payment_hash: PaymentHash,
- },
-}
-
-impl PendingOutboundPayment {
- fn is_retryable(&self) -> bool {
- match self {
- PendingOutboundPayment::Retryable { .. } => true,
- _ => false,
- }
- }
- fn is_fulfilled(&self) -> bool {
- match self {
- PendingOutboundPayment::Fulfilled { .. } => true,
- _ => false,
- }
- }
- fn abandoned(&self) -> bool {
- match self {
- PendingOutboundPayment::Abandoned { .. } => true,
- _ => false,
- }
- }
- fn get_pending_fee_msat(&self) -> Option<u64> {
- match self {
- PendingOutboundPayment::Retryable { pending_fee_msat, .. } => pending_fee_msat.clone(),
- _ => None,
- }
- }
-
- fn payment_hash(&self) -> Option<PaymentHash> {
- match self {
- PendingOutboundPayment::Legacy { .. } => None,
- PendingOutboundPayment::Retryable { payment_hash, .. } => Some(*payment_hash),
- PendingOutboundPayment::Fulfilled { payment_hash, .. } => *payment_hash,
- PendingOutboundPayment::Abandoned { payment_hash, .. } => Some(*payment_hash),
- }
- }
-
- fn mark_fulfilled(&mut self) {
- let mut session_privs = HashSet::new();
- core::mem::swap(&mut session_privs, match self {
- PendingOutboundPayment::Legacy { session_privs } |
- PendingOutboundPayment::Retryable { session_privs, .. } |
- PendingOutboundPayment::Fulfilled { session_privs, .. } |
- PendingOutboundPayment::Abandoned { session_privs, .. }
- => session_privs,
- });
- let payment_hash = self.payment_hash();
- *self = PendingOutboundPayment::Fulfilled { session_privs, payment_hash };
- }
-
- fn mark_abandoned(&mut self) -> Result<(), ()> {
- let mut session_privs = HashSet::new();
- let our_payment_hash;
- core::mem::swap(&mut session_privs, match self {
- PendingOutboundPayment::Legacy { .. } |
- PendingOutboundPayment::Fulfilled { .. } =>
- return Err(()),
- PendingOutboundPayment::Retryable { session_privs, payment_hash, .. } |
- PendingOutboundPayment::Abandoned { session_privs, payment_hash, .. } => {
- our_payment_hash = *payment_hash;
- session_privs
- },
- });
- *self = PendingOutboundPayment::Abandoned { session_privs, payment_hash: our_payment_hash };
- Ok(())
- }
-
- /// panics if path is None and !self.is_fulfilled
- fn remove(&mut self, session_priv: &[u8; 32], path: Option<&Vec<RouteHop>>) -> bool {
- let remove_res = match self {
- PendingOutboundPayment::Legacy { session_privs } |
- PendingOutboundPayment::Retryable { session_privs, .. } |
- PendingOutboundPayment::Fulfilled { session_privs, .. } |
- PendingOutboundPayment::Abandoned { session_privs, .. } => {
- session_privs.remove(session_priv)
- }
- };
- if remove_res {
- if let PendingOutboundPayment::Retryable { ref mut pending_amt_msat, ref mut pending_fee_msat, .. } = self {
- let path = path.expect("Fulfilling a payment should always come with a path");
- let path_last_hop = path.last().expect("Outbound payments must have had a valid path");
- *pending_amt_msat -= path_last_hop.fee_msat;
- if let Some(fee_msat) = pending_fee_msat.as_mut() {
- *fee_msat -= path.get_path_fees();
- }
- }
- }
- remove_res
- }
-
- fn insert(&mut self, session_priv: [u8; 32], path: &Vec<RouteHop>) -> bool {
- let insert_res = match self {
- PendingOutboundPayment::Legacy { session_privs } |
- PendingOutboundPayment::Retryable { session_privs, .. } => {
- session_privs.insert(session_priv)
- }
- PendingOutboundPayment::Fulfilled { .. } => false,
- PendingOutboundPayment::Abandoned { .. } => false,
- };
- if insert_res {
- if let PendingOutboundPayment::Retryable { ref mut pending_amt_msat, ref mut pending_fee_msat, .. } = self {
- let path_last_hop = path.last().expect("Outbound payments must have had a valid path");
- *pending_amt_msat += path_last_hop.fee_msat;
- if let Some(fee_msat) = pending_fee_msat.as_mut() {
- *fee_msat += path.get_path_fees();
- }
- }
- }
- insert_res
- }
-
- fn remaining_parts(&self) -> usize {
- match self {
- PendingOutboundPayment::Legacy { session_privs } |
- PendingOutboundPayment::Retryable { session_privs, .. } |
- PendingOutboundPayment::Fulfilled { session_privs, .. } |
- PendingOutboundPayment::Abandoned { session_privs, .. } => {
- session_privs.len()
- }
- }
- }
-}
-
/// SimpleArcChannelManager is useful when you need a ChannelManager with a static lifetime, e.g.
/// when you're using lightning-net-tokio (since tokio::spawn requires parameters with static
/// lifetimes). Other times you can afford a reference, which is more efficient, in which case
/// SimpleRefChannelManager is the more appropriate type. Defining these type aliases prevents
-/// issues such as overly long function definitions. Note that the ChannelManager can take any
-/// type that implements KeysInterface for its keys manager, but this type alias chooses the
-/// concrete type of the KeysManager.
+/// issues such as overly long function definitions. Note that the ChannelManager can take any type
+/// that implements KeysInterface or Router for its keys manager and router, respectively, but this
+/// type alias chooses the concrete types of KeysManager and DefaultRouter.
///
/// (C-not exported) as Arcs don't make sense in bindings
-pub type SimpleArcChannelManager<M, T, F, L> = ChannelManager<InMemorySigner, Arc<M>, Arc<T>, Arc<KeysManager>, Arc<F>, Arc<L>>;
+pub type SimpleArcChannelManager<M, T, F, L> = ChannelManager<
+ Arc<M>,
+ Arc<T>,
+ Arc<KeysManager>,
+ Arc<F>,
+ Arc<DefaultRouter<
+ Arc<NetworkGraph<Arc<L>>>,
+ Arc<L>,
+ Arc<Mutex<ProbabilisticScorer<Arc<NetworkGraph<Arc<L>>>, Arc<L>>>>
+ >>,
+ Arc<L>
+>;
/// SimpleRefChannelManager is a type alias for a ChannelManager reference, and is the reference
/// counterpart to the SimpleArcChannelManager type alias. Use this type by default when you don't
/// need a ChannelManager with a static lifetime. You'll need a static lifetime in cases such as
/// usage of lightning-net-tokio (since tokio::spawn requires parameters with static lifetimes).
/// But if this is not necessary, using a reference is more efficient. Defining these type aliases
-/// helps with issues such as long function definitions. Note that the ChannelManager can take any
-/// type that implements KeysInterface for its keys manager, but this type alias chooses the
-/// concrete type of the KeysManager.
+/// issues such as overly long function definitions. Note that the ChannelManager can take any type
+/// that implements KeysInterface or Router for its keys manager and router, respectively, but this
+/// type alias chooses the concrete types of KeysManager and DefaultRouter.
///
/// (C-not exported) as Arcs don't make sense in bindings
-pub type SimpleRefChannelManager<'a, 'b, 'c, 'd, 'e, M, T, F, L> = ChannelManager<InMemorySigner, &'a M, &'b T, &'c KeysManager, &'d F, &'e L>;
+pub type SimpleRefChannelManager<'a, 'b, 'c, 'd, 'e, 'f, 'g, 'h, M, T, F, L> = ChannelManager<&'a M, &'b T, &'c KeysManager, &'d F, &'e DefaultRouter<&'f NetworkGraph<&'g L>, &'g L, &'h Mutex<ProbabilisticScorer<&'f NetworkGraph<&'g L>, &'g L>>>, &'g L>;
/// Manager which keeps track of a number of channels and sends messages to the appropriate
/// channel, also tracking HTLC preimages and forwarding onion packets appropriately.
/// essentially you should default to using a SimpleRefChannelManager, and use a
/// SimpleArcChannelManager when you require a ChannelManager with a static lifetime, such as when
/// you're using lightning-net-tokio.
-pub struct ChannelManager<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
- where M::Target: chain::Watch<Signer>,
- T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
- F::Target: FeeEstimator,
- L::Target: Logger,
+//
+// Lock order:
+// The tree structure below illustrates the lock order requirements for the different locks of the
+// `ChannelManager`. Locks can be held at the same time if they are on the same branch in the tree,
+// and should then be taken in the order of the lowest to the highest level in the tree.
+// Note that locks on different branches shall not be taken at the same time, as doing so will
+// create a new lock order for those specific locks in the order they were taken.
+//
+// Lock order tree:
+//
+// `total_consistency_lock`
+// |
+// |__`forward_htlcs`
+// | |
+// | |__`pending_intercepted_htlcs`
+// |
+// |__`pending_inbound_payments`
+// | |
+// | |__`claimable_payments`
+// | |
+// | |__`pending_outbound_payments` // This field's struct contains a map of pending outbounds
+// | |
+// | |__`channel_state`
+// | |
+// | |__`per_peer_state`
+// | |
+// | |__`peer_state`
+// | |
+// | |__`id_to_peer`
+// | |
+// | |__`short_to_chan_info`
+// | |
+// | |__`outbound_scid_aliases`
+// | |
+// | |__`best_block`
+// | |
+// | |__`pending_events`
+// | |
+// | |__`pending_background_events`
+//
+pub struct ChannelManager<M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref>
+where
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
+ T::Target: BroadcasterInterface,
+ K::Target: KeysInterface,
+ F::Target: FeeEstimator,
+ R::Target: Router,
+ L::Target: Logger,
{
default_configuration: UserConfig,
genesis_hash: BlockHash,
- fee_estimator: F,
+ fee_estimator: LowerBoundedFeeEstimator<F>,
chain_monitor: M,
tx_broadcaster: T,
+ #[allow(unused)]
+ router: R,
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
#[cfg(test)]
pub(super) best_block: RwLock<BestBlock>,
#[cfg(not(test))]
best_block: RwLock<BestBlock>,
secp_ctx: Secp256k1<secp256k1::All>,
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
#[cfg(any(test, feature = "_test_utils"))]
- pub(super) channel_state: Mutex<ChannelHolder<Signer>>,
+ pub(super) channel_state: Mutex<ChannelHolder>,
#[cfg(not(any(test, feature = "_test_utils")))]
- channel_state: Mutex<ChannelHolder<Signer>>,
+ channel_state: Mutex<ChannelHolder>,
/// Storage for PaymentSecrets and any requirements on future inbound payments before we will
- /// expose them to users via a PaymentReceived event. HTLCs which do not meet the requirements
+ /// expose them to users via a PaymentClaimable event. HTLCs which do not meet the requirements
/// here are failed when we process them as pending-forwardable-HTLCs, and entries are removed
- /// after we generate a PaymentReceived upon receipt of all MPP parts or when they time out.
- /// Locked *after* channel_state.
+ /// after we generate a PaymentClaimable upon receipt of all MPP parts or when they time out.
+ ///
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
pending_inbound_payments: Mutex<HashMap<PaymentHash, PendingInboundPayment>>,
/// The session_priv bytes and retry metadata of outbound payments which are pending resolution.
///
/// See `PendingOutboundPayment` documentation for more info.
///
- /// Locked *after* channel_state.
- pending_outbound_payments: Mutex<HashMap<PaymentId, PendingOutboundPayment>>,
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
+ pending_outbound_payments: OutboundPayments,
+
+ /// SCID/SCID Alias -> forward infos. Key of 0 means payments received.
+ ///
+ /// Note that because we may have an SCID Alias as the key we can have two entries per channel,
+ /// though in practice we probably won't be receiving HTLCs for a channel both via the alias
+ /// and via the classic SCID.
+ ///
+ /// Note that no consistency guarantees are made about the existence of a channel with the
+ /// `short_channel_id` here, nor the `short_channel_id` in the `PendingHTLCInfo`!
+ ///
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
+ #[cfg(test)]
+ pub(super) forward_htlcs: Mutex<HashMap<u64, Vec<HTLCForwardInfo>>>,
+ #[cfg(not(test))]
+ forward_htlcs: Mutex<HashMap<u64, Vec<HTLCForwardInfo>>>,
+ /// Storage for HTLCs that have been intercepted and bubbled up to the user. We hold them here
+ /// until the user tells us what we should do with them.
+ ///
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
+ pending_intercepted_htlcs: Mutex<HashMap<InterceptId, PendingAddHTLCInfo>>,
+
+ /// The sets of payments which are claimable or currently being claimed. See
+ /// [`ClaimablePayments`]' individual field docs for more info.
+ ///
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
+ claimable_payments: Mutex<ClaimablePayments>,
/// The set of outbound SCID aliases across all our channels, including unconfirmed channels
/// and some closed channels which reached a usable state prior to being closed. This is used
/// only to avoid duplicates, and is not persisted explicitly to disk, but rebuilt from the
/// active channel list on load.
+ ///
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
outbound_scid_aliases: Mutex<HashSet<u64>>,
+ /// `channel_id` -> `counterparty_node_id`.
+ ///
+ /// Only `channel_id`s are allowed as keys in this map, and not `temporary_channel_id`s. As
+ /// multiple channels with the same `temporary_channel_id` to different peers can exist,
+ /// allowing `temporary_channel_id`s in this map would cause collisions for such channels.
+ ///
+ /// Note that this map should only be used for `MonitorEvent` handling, to be able to access
+ /// the corresponding channel for the event, as we only have access to the `channel_id` during
+ /// the handling of the events.
+ ///
+ /// TODO:
+ /// The `counterparty_node_id` isn't passed with `MonitorEvent`s currently. To pass it, we need
+ /// to make `counterparty_node_id`'s a required field in `ChannelMonitor`s, which unfortunately
+ /// would break backwards compatability.
+ /// We should add `counterparty_node_id`s to `MonitorEvent`s, and eventually rely on it in the
+ /// future. That would make this map redundant, as only the `ChannelManager::per_peer_state` is
+ /// required to access the channel with the `counterparty_node_id`.
+ ///
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
+ id_to_peer: Mutex<HashMap<[u8; 32], PublicKey>>,
+
+ /// SCIDs (and outbound SCID aliases) -> `counterparty_node_id`s and `channel_id`s.
+ ///
+ /// Outbound SCID aliases are added here once the channel is available for normal use, with
+ /// SCIDs being added once the funding transaction is confirmed at the channel's required
+ /// confirmation depth.
+ ///
+ /// Note that while this holds `counterparty_node_id`s and `channel_id`s, no consistency
+ /// guarantees are made about the existence of a peer with the `counterparty_node_id` nor a
+ /// channel with the `channel_id` in our other maps.
+ ///
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
+ #[cfg(test)]
+ pub(super) short_to_chan_info: FairRwLock<HashMap<u64, (PublicKey, [u8; 32])>>,
+ #[cfg(not(test))]
+ short_to_chan_info: FairRwLock<HashMap<u64, (PublicKey, [u8; 32])>>,
+
our_network_key: SecretKey,
our_network_pubkey: PublicKey,
/// [fake scids]: crate::util::scid_utils::fake_scid
fake_scid_rand_bytes: [u8; 32],
- /// Used to track the last value sent in a node_announcement "timestamp" field. We ensure this
- /// value increases strictly since we don't assume access to a time source.
- last_node_announcement_serial: AtomicUsize,
+ /// When we send payment probes, we generate the [`PaymentHash`] based on this cookie secret
+ /// and a random [`PaymentId`]. This allows us to discern probes from real payments, without
+ /// keeping additional state.
+ probing_cookie_secret: [u8; 32],
/// The highest block timestamp we've seen, which is usually a good guess at the current time.
/// Assuming most miners are generating blocks with reasonable timestamps, this shouldn't be
/// very far in the past, and can only ever be up to two hours in the future.
highest_seen_timestamp: AtomicUsize,
- /// The bulk of our storage will eventually be here (channels and message queues and the like).
+ /// The bulk of our storage will eventually be here (message queues and the like). Currently
+ /// the `per_peer_state` stores our channels on a per-peer basis, as well as the peer's latest
+ /// features.
+ ///
/// If we are connected to a peer we always at least have an entry here, even if no channels
/// are currently open with that peer.
+ ///
/// Because adding or removing an entry is rare, we usually take an outer read lock and then
- /// operate on the inner value freely. Sadly, this prevents parallel operation when opening a
- /// new channel.
+ /// operate on the inner value freely. This opens up for parallel per-peer operation for
+ /// channels.
///
- /// If also holding `channel_state` lock, must lock `channel_state` prior to `per_peer_state`.
- per_peer_state: RwLock<HashMap<PublicKey, Mutex<PeerState>>>,
+ /// Note that the same thread must never acquire two inner `PeerState` locks at the same time.
+ ///
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
+ #[cfg(not(any(test, feature = "_test_utils")))]
+ per_peer_state: FairRwLock<HashMap<PublicKey, Mutex<PeerState<<K::Target as SignerProvider>::Signer>>>>,
+ #[cfg(any(test, feature = "_test_utils"))]
+ pub(super) per_peer_state: FairRwLock<HashMap<PublicKey, Mutex<PeerState<<K::Target as SignerProvider>::Signer>>>>,
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
pending_events: Mutex<Vec<events::Event>>,
+ /// See `ChannelManager` struct-level documentation for lock order requirements.
pending_background_events: Mutex<Vec<BackgroundEvent>>,
/// Used when we have to take a BIG lock to make sure everything is self-consistent.
/// Essentially just when we're serializing ourselves out.
/// Taken first everywhere where we are making changes before any other locks.
/// When acquiring this lock in read mode, rather than acquiring it directly, call
/// `PersistenceNotifierGuard::notify_on_drop(..)` and pass the lock to it, to ensure the
- /// PersistenceNotifier the lock contains sends out a notification when the lock is released.
+ /// Notifier the lock contains sends out a notification when the lock is released.
total_consistency_lock: RwLock<()>,
- persistence_notifier: PersistenceNotifier,
+ persistence_notifier: Notifier,
keys_manager: K,
/// notify or not based on whether relevant changes have been made, providing a closure to
/// `optionally_notify` which returns a `NotifyOption`.
struct PersistenceNotifierGuard<'a, F: Fn() -> NotifyOption> {
- persistence_notifier: &'a PersistenceNotifier,
+ persistence_notifier: &'a Notifier,
should_persist: F,
// We hold onto this result so the lock doesn't get released immediately.
_read_guard: RwLockReadGuard<'a, ()>,
}
impl<'a> PersistenceNotifierGuard<'a, fn() -> NotifyOption> { // We don't care what the concrete F is here, it's unused
- fn notify_on_drop(lock: &'a RwLock<()>, notifier: &'a PersistenceNotifier) -> PersistenceNotifierGuard<'a, impl Fn() -> NotifyOption> {
+ fn notify_on_drop(lock: &'a RwLock<()>, notifier: &'a Notifier) -> PersistenceNotifierGuard<'a, impl Fn() -> NotifyOption> {
PersistenceNotifierGuard::optionally_notify(lock, notifier, || -> NotifyOption { NotifyOption::DoPersist })
}
- fn optionally_notify<F: Fn() -> NotifyOption>(lock: &'a RwLock<()>, notifier: &'a PersistenceNotifier, persist_check: F) -> PersistenceNotifierGuard<'a, F> {
+ fn optionally_notify<F: Fn() -> NotifyOption>(lock: &'a RwLock<()>, notifier: &'a Notifier, persist_check: F) -> PersistenceNotifierGuard<'a, F> {
let read_guard = lock.read().unwrap();
PersistenceNotifierGuard {
// the HTLC via a full update_fail_htlc/commitment_signed dance before we hit the
// CLTV_CLAIM_BUFFER point (we static assert that it's at least 3 blocks more).
pub const MIN_CLTV_EXPIRY_DELTA: u16 = 6*7;
-pub(super) const CLTV_FAR_FAR_AWAY: u32 = 6 * 24 * 7; //TODO?
+// This should be long enough to allow a payment path drawn across multiple routing hops with substantial
+// `cltv_expiry_delta`. Indeed, the length of those values is the reaction delay offered to a routing node
+// in case of HTLC on-chain settlement. While appearing less competitive, a node operator could decide to
+// scale them up to suit its security policy. At the network-level, we shouldn't constrain them too much,
+// while avoiding to introduce a DoS vector. Further, a low CTLV_FAR_FAR_AWAY could be a source of
+// routing failure for any HTLC sender picking up an LDK node among the first hops.
+pub(super) const CLTV_FAR_FAR_AWAY: u32 = 14 * 24 * 6;
/// Minimum CLTV difference between the current block height and received inbound payments.
/// Invoices generated for payment to us must set their `min_final_cltv_expiry` field to at least
#[allow(dead_code)]
const CHECK_CLTV_EXPIRY_SANITY_2: u32 = MIN_CLTV_EXPIRY_DELTA as u32 - LATENCY_GRACE_PERIOD_BLOCKS - 2*CLTV_CLAIM_BUFFER;
-/// The number of blocks before we consider an outbound payment for expiry if it doesn't have any
-/// pending HTLCs in flight.
-pub(crate) const PAYMENT_EXPIRY_BLOCKS: u32 = 3;
-
/// The number of ticks of [`ChannelManager::timer_tick_occurred`] until expiry of incomplete MPPs
pub(crate) const MPP_TIMEOUT_TICKS: u8 = 3;
+/// The number of ticks of [`ChannelManager::timer_tick_occurred`] until we time-out the
+/// idempotency of payments by [`PaymentId`]. See
+/// [`OutboundPayments::remove_stale_resolved_payments`].
+pub(crate) const IDEMPOTENCY_TIMEOUT_TICKS: u8 = 7;
+
/// Information needed for constructing an invoice route hint for this channel.
#[derive(Clone, Debug, PartialEq)]
pub struct CounterpartyForwardingInfo {
///
/// [`outbound_capacity_msat`]: ChannelDetails::outbound_capacity_msat
pub unspendable_punishment_reserve: Option<u64>,
- /// The `user_channel_id` passed in to create_channel, or 0 if the channel was inbound.
- pub user_channel_id: u64,
+ /// The `user_channel_id` passed in to create_channel, or a random value if the channel was
+ /// inbound. This may be zero for inbound channels serialized with LDK versions prior to
+ /// 0.0.113.
+ pub user_channel_id: u128,
/// Our total balance. This is the amount we would get if we close the channel.
/// This value is not exact. Due to various in-flight changes and feerate changes, exactly this
/// amount is not likely to be recoverable on close.
/// [`ChannelHandshakeConfig::minimum_depth`]: crate::util::config::ChannelHandshakeConfig::minimum_depth
/// [`ChannelHandshakeLimits::max_minimum_depth`]: crate::util::config::ChannelHandshakeLimits::max_minimum_depth
pub confirmations_required: Option<u32>,
+ /// The current number of confirmations on the funding transaction.
+ ///
+ /// This value will be `None` for objects serialized with LDK versions prior to 0.0.113.
+ pub confirmations: Option<u32>,
/// The number of blocks (after our commitment transaction confirms) that we will need to wait
/// until we can claim our funds after we force-close the channel. During this time our
/// counterparty is allowed to punish us if we broadcasted a stale state. If our counterparty
pub inbound_htlc_minimum_msat: Option<u64>,
/// The largest value HTLC (in msat) we currently will accept, for this channel.
pub inbound_htlc_maximum_msat: Option<u64>,
+ /// Set of configurable parameters that affect channel operation.
+ ///
+ /// This field is only `None` for `ChannelDetails` objects serialized prior to LDK 0.0.109.
+ pub config: Option<ChannelConfig>,
}
impl ChannelDetails {
}
}
-/// If a payment fails to send, it can be in one of several states. This enum is returned as the
-/// Err() type describing which state the payment is in, see the description of individual enum
-/// states for more.
-#[derive(Clone, Debug)]
-pub enum PaymentSendFailure {
- /// A parameter which was passed to send_payment was invalid, preventing us from attempting to
- /// send the payment at all. No channel state has been changed or messages sent to peers, and
- /// once you've changed the parameter at error, you can freely retry the payment in full.
- ParameterError(APIError),
- /// A parameter in a single path which was passed to send_payment was invalid, preventing us
- /// from attempting to send the payment at all. No channel state has been changed or messages
- /// sent to peers, and once you've changed the parameter at error, you can freely retry the
- /// payment in full.
- ///
- /// The results here are ordered the same as the paths in the route object which was passed to
- /// send_payment.
- PathParameterError(Vec<Result<(), APIError>>),
- /// All paths which were attempted failed to send, with no channel state change taking place.
- /// You can freely retry the payment in full (though you probably want to do so over different
- /// paths than the ones selected).
- AllFailedRetrySafe(Vec<APIError>),
- /// Some paths which were attempted failed to send, though possibly not all. At least some
- /// paths have irrevocably committed to the HTLC and retrying the payment in full would result
- /// in over-/re-payment.
- ///
- /// The results here are ordered the same as the paths in the route object which was passed to
- /// send_payment, and any Errs which are not APIError::MonitorUpdateFailed can be safely
- /// retried (though there is currently no API with which to do so).
- ///
- /// Any entries which contain Err(APIError::MonitorUpdateFailed) or Ok(()) MUST NOT be retried
- /// as they will result in over-/re-payment. These HTLCs all either successfully sent (in the
- /// case of Ok(())) or will send once channel_monitor_updated is called on the next-hop channel
- /// with the latest update_id.
- PartialFailure {
- /// The errors themselves, in the same order as the route hops.
- results: Vec<Result<(), APIError>>,
- /// If some paths failed without irrevocably committing to the new HTLC(s), this will
- /// contain a [`RouteParameters`] object which can be used to calculate a new route that
- /// will pay all remaining unpaid balance.
- failed_paths_retry: Option<RouteParameters>,
- /// The payment id for the payment, which is now at least partially pending.
- payment_id: PaymentId,
- },
-}
-
/// Route hints used in constructing invoices for [phantom node payents].
///
/// [phantom node payments]: crate::chain::keysinterface::PhantomKeysManager
}
macro_rules! update_maps_on_chan_removal {
- ($self: expr, $short_to_id: expr, $channel: expr) => {
+ ($self: expr, $channel: expr) => {{
+ $self.id_to_peer.lock().unwrap().remove(&$channel.channel_id());
+ let mut short_to_chan_info = $self.short_to_chan_info.write().unwrap();
if let Some(short_id) = $channel.get_short_channel_id() {
- $short_to_id.remove(&short_id);
+ short_to_chan_info.remove(&short_id);
} else {
// If the channel was never confirmed on-chain prior to its closure, remove the
// outbound SCID alias we used for it from the collision-prevention set. While we
let alias_removed = $self.outbound_scid_aliases.lock().unwrap().remove(&$channel.outbound_scid_alias());
debug_assert!(alias_removed);
}
- $short_to_id.remove(&$channel.outbound_scid_alias());
- }
+ short_to_chan_info.remove(&$channel.outbound_scid_alias());
+ }}
}
/// Returns (boolean indicating if we should remove the Channel object from memory, a mapped error)
macro_rules! convert_chan_err {
- ($self: ident, $err: expr, $short_to_id: expr, $channel: expr, $channel_id: expr) => {
+ ($self: ident, $err: expr, $channel: expr, $channel_id: expr) => {
match $err {
ChannelError::Warn(msg) => {
(false, MsgHandleErrInternal::from_chan_no_close(ChannelError::Warn(msg), $channel_id.clone()))
},
ChannelError::Close(msg) => {
log_error!($self.logger, "Closing channel {} due to close-required error: {}", log_bytes!($channel_id[..]), msg);
- update_maps_on_chan_removal!($self, $short_to_id, $channel);
+ update_maps_on_chan_removal!($self, $channel);
let shutdown_res = $channel.force_shutdown(true);
(true, MsgHandleErrInternal::from_finish_shutdown(msg, *$channel_id, $channel.get_user_id(),
shutdown_res, $self.get_channel_update_for_broadcast(&$channel).ok()))
},
- ChannelError::CloseDelayBroadcast(msg) => {
- log_error!($self.logger, "Channel {} need to be shutdown but closing transactions not broadcast due to {}", log_bytes!($channel_id[..]), msg);
- update_maps_on_chan_removal!($self, $short_to_id, $channel);
- let shutdown_res = $channel.force_shutdown(false);
- (true, MsgHandleErrInternal::from_finish_shutdown(msg, *$channel_id, $channel.get_user_id(),
- shutdown_res, $self.get_channel_update_for_broadcast(&$channel).ok()))
- }
}
}
}
macro_rules! break_chan_entry {
- ($self: ident, $res: expr, $channel_state: expr, $entry: expr) => {
+ ($self: ident, $res: expr, $entry: expr) => {
match $res {
Ok(res) => res,
Err(e) => {
- let (drop, res) = convert_chan_err!($self, e, $channel_state.short_to_id, $entry.get_mut(), $entry.key());
+ let (drop, res) = convert_chan_err!($self, e, $entry.get_mut(), $entry.key());
if drop {
$entry.remove_entry();
}
}
macro_rules! try_chan_entry {
- ($self: ident, $res: expr, $channel_state: expr, $entry: expr) => {
+ ($self: ident, $res: expr, $entry: expr) => {
match $res {
Ok(res) => res,
Err(e) => {
- let (drop, res) = convert_chan_err!($self, e, $channel_state.short_to_id, $entry.get_mut(), $entry.key());
+ let (drop, res) = convert_chan_err!($self, e, $entry.get_mut(), $entry.key());
if drop {
$entry.remove_entry();
}
}
macro_rules! remove_channel {
- ($self: expr, $channel_state: expr, $entry: expr) => {
+ ($self: expr, $entry: expr) => {
{
let channel = $entry.remove_entry().1;
- update_maps_on_chan_removal!($self, $channel_state.short_to_id, channel);
+ update_maps_on_chan_removal!($self, channel);
channel
}
}
}
-macro_rules! handle_monitor_err {
- ($self: ident, $err: expr, $short_to_id: expr, $chan: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $resend_channel_ready: expr, $failed_forwards: expr, $failed_fails: expr, $failed_finalized_fulfills: expr, $chan_id: expr) => {
+macro_rules! handle_monitor_update_res {
+ ($self: ident, $err: expr, $chan: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $resend_channel_ready: expr, $failed_forwards: expr, $failed_fails: expr, $failed_finalized_fulfills: expr, $chan_id: expr) => {
match $err {
- ChannelMonitorUpdateErr::PermanentFailure => {
- log_error!($self.logger, "Closing channel {} due to monitor update ChannelMonitorUpdateErr::PermanentFailure", log_bytes!($chan_id[..]));
- update_maps_on_chan_removal!($self, $short_to_id, $chan);
+ ChannelMonitorUpdateStatus::PermanentFailure => {
+ log_error!($self.logger, "Closing channel {} due to monitor update ChannelMonitorUpdateStatus::PermanentFailure", log_bytes!($chan_id[..]));
+ update_maps_on_chan_removal!($self, $chan);
// TODO: $failed_fails is dropped here, which will cause other channels to hit the
// chain in a confused state! We need to move them into the ChannelMonitor which
// will be responsible for failing backwards once things confirm on-chain.
// given up the preimage yet, so might as well just wait until the payment is
// retried, avoiding the on-chain fees.
let res: Result<(), _> = Err(MsgHandleErrInternal::from_finish_shutdown("ChannelMonitor storage failure".to_owned(), *$chan_id, $chan.get_user_id(),
- $chan.force_shutdown(true), $self.get_channel_update_for_broadcast(&$chan).ok() ));
+ $chan.force_shutdown(false), $self.get_channel_update_for_broadcast(&$chan).ok() ));
(res, true)
},
- ChannelMonitorUpdateErr::TemporaryFailure => {
- log_info!($self.logger, "Disabling channel {} due to monitor update TemporaryFailure. On restore will send {} and process {} forwards, {} fails, and {} fulfill finalizations",
+ ChannelMonitorUpdateStatus::InProgress => {
+ log_info!($self.logger, "Disabling channel {} due to monitor update in progress. On restore will send {} and process {} forwards, {} fails, and {} fulfill finalizations",
log_bytes!($chan_id[..]),
if $resend_commitment && $resend_raa {
match $action_type {
if !$resend_raa {
debug_assert!($action_type == RAACommitmentOrder::CommitmentFirst || !$resend_commitment);
}
- $chan.monitor_update_failed($resend_raa, $resend_commitment, $resend_channel_ready, $failed_forwards, $failed_fails, $failed_finalized_fulfills);
+ $chan.monitor_updating_paused($resend_raa, $resend_commitment, $resend_channel_ready, $failed_forwards, $failed_fails, $failed_finalized_fulfills);
(Err(MsgHandleErrInternal::from_chan_no_close(ChannelError::Ignore("Failed to update ChannelMonitor".to_owned()), *$chan_id)), false)
},
+ ChannelMonitorUpdateStatus::Completed => {
+ (Ok(()), false)
+ },
}
};
- ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $resend_channel_ready: expr, $failed_forwards: expr, $failed_fails: expr, $failed_finalized_fulfills: expr) => { {
- let (res, drop) = handle_monitor_err!($self, $err, $channel_state.short_to_id, $entry.get_mut(), $action_type, $resend_raa, $resend_commitment, $resend_channel_ready, $failed_forwards, $failed_fails, $failed_finalized_fulfills, $entry.key());
+ ($self: ident, $err: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $resend_channel_ready: expr, $failed_forwards: expr, $failed_fails: expr, $failed_finalized_fulfills: expr) => { {
+ let (res, drop) = handle_monitor_update_res!($self, $err, $entry.get_mut(), $action_type, $resend_raa, $resend_commitment, $resend_channel_ready, $failed_forwards, $failed_fails, $failed_finalized_fulfills, $entry.key());
if drop {
$entry.remove_entry();
}
res
} };
- ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $chan_id: expr, COMMITMENT_UPDATE_ONLY) => { {
+ ($self: ident, $err: expr, $entry: expr, $action_type: path, $chan_id: expr, COMMITMENT_UPDATE_ONLY) => { {
debug_assert!($action_type == RAACommitmentOrder::CommitmentFirst);
- handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, false, true, false, Vec::new(), Vec::new(), Vec::new(), $chan_id)
+ handle_monitor_update_res!($self, $err, $entry, $action_type, false, true, false, Vec::new(), Vec::new(), Vec::new(), $chan_id)
} };
- ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $chan_id: expr, NO_UPDATE) => {
- handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, false, false, false, Vec::new(), Vec::new(), Vec::new(), $chan_id)
+ ($self: ident, $err: expr, $entry: expr, $action_type: path, $chan_id: expr, NO_UPDATE) => {
+ handle_monitor_update_res!($self, $err, $entry, $action_type, false, false, false, Vec::new(), Vec::new(), Vec::new(), $chan_id)
};
- ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_channel_ready: expr, OPTIONALLY_RESEND_FUNDING_LOCKED) => {
- handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, false, false, $resend_channel_ready, Vec::new(), Vec::new(), Vec::new())
+ ($self: ident, $err: expr, $entry: expr, $action_type: path, $resend_channel_ready: expr, OPTIONALLY_RESEND_FUNDING_LOCKED) => {
+ handle_monitor_update_res!($self, $err, $entry, $action_type, false, false, $resend_channel_ready, Vec::new(), Vec::new(), Vec::new())
};
- ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr) => {
- handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment, false, Vec::new(), Vec::new(), Vec::new())
+ ($self: ident, $err: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr) => {
+ handle_monitor_update_res!($self, $err, $entry, $action_type, $resend_raa, $resend_commitment, false, Vec::new(), Vec::new(), Vec::new())
};
- ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $failed_forwards: expr, $failed_fails: expr) => {
- handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment, false, $failed_forwards, $failed_fails, Vec::new())
+ ($self: ident, $err: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $failed_forwards: expr, $failed_fails: expr) => {
+ handle_monitor_update_res!($self, $err, $entry, $action_type, $resend_raa, $resend_commitment, false, $failed_forwards, $failed_fails, Vec::new())
};
}
-macro_rules! return_monitor_err {
- ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr) => {
- return handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment);
- };
- ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr, $failed_forwards: expr, $failed_fails: expr) => {
- return handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment, $failed_forwards, $failed_fails);
- }
-}
-
-// Does not break in case of TemporaryFailure!
-macro_rules! maybe_break_monitor_err {
- ($self: ident, $err: expr, $channel_state: expr, $entry: expr, $action_type: path, $resend_raa: expr, $resend_commitment: expr) => {
- match (handle_monitor_err!($self, $err, $channel_state, $entry, $action_type, $resend_raa, $resend_commitment), $err) {
- (e, ChannelMonitorUpdateErr::PermanentFailure) => {
- break e;
- },
- (_, ChannelMonitorUpdateErr::TemporaryFailure) => { },
- }
- }
-}
-
macro_rules! send_channel_ready {
- ($short_to_id: expr, $pending_msg_events: expr, $channel: expr, $channel_ready_msg: expr) => {
+ ($self: ident, $pending_msg_events: expr, $channel: expr, $channel_ready_msg: expr) => {{
$pending_msg_events.push(events::MessageSendEvent::SendChannelReady {
node_id: $channel.get_counterparty_node_id(),
msg: $channel_ready_msg,
});
// Note that we may send a `channel_ready` multiple times for a channel if we reconnect, so
// we allow collisions, but we shouldn't ever be updating the channel ID pointed to.
- let outbound_alias_insert = $short_to_id.insert($channel.outbound_scid_alias(), $channel.channel_id());
- assert!(outbound_alias_insert.is_none() || outbound_alias_insert.unwrap() == $channel.channel_id(),
+ let mut short_to_chan_info = $self.short_to_chan_info.write().unwrap();
+ let outbound_alias_insert = short_to_chan_info.insert($channel.outbound_scid_alias(), ($channel.get_counterparty_node_id(), $channel.channel_id()));
+ assert!(outbound_alias_insert.is_none() || outbound_alias_insert.unwrap() == ($channel.get_counterparty_node_id(), $channel.channel_id()),
"SCIDs should never collide - ensure you weren't behind the chain tip by a full month when creating channels");
if let Some(real_scid) = $channel.get_short_channel_id() {
- let scid_insert = $short_to_id.insert(real_scid, $channel.channel_id());
- assert!(scid_insert.is_none() || scid_insert.unwrap() == $channel.channel_id(),
+ let scid_insert = short_to_chan_info.insert(real_scid, ($channel.get_counterparty_node_id(), $channel.channel_id()));
+ assert!(scid_insert.is_none() || scid_insert.unwrap() == ($channel.get_counterparty_node_id(), $channel.channel_id()),
"SCIDs should never collide - ensure you weren't behind the chain tip by a full month when creating channels");
}
- }
+ }}
}
-macro_rules! handle_chan_restoration_locked {
- ($self: ident, $channel_lock: expr, $channel_state: expr, $channel_entry: expr,
- $raa: expr, $commitment_update: expr, $order: expr, $chanmon_update: expr,
- $pending_forwards: expr, $funding_broadcastable: expr, $channel_ready: expr, $announcement_sigs: expr) => { {
- let mut htlc_forwards = None;
-
- let chanmon_update: Option<ChannelMonitorUpdate> = $chanmon_update; // Force type-checking to resolve
- let chanmon_update_is_none = chanmon_update.is_none();
- let counterparty_node_id = $channel_entry.get().get_counterparty_node_id();
- let res = loop {
- let forwards: Vec<(PendingHTLCInfo, u64)> = $pending_forwards; // Force type-checking to resolve
- if !forwards.is_empty() {
- htlc_forwards = Some(($channel_entry.get().get_short_channel_id().unwrap_or($channel_entry.get().outbound_scid_alias()),
- $channel_entry.get().get_funding_txo().unwrap(), forwards));
- }
-
- if chanmon_update.is_some() {
- // On reconnect, we, by definition, only resend a channel_ready if there have been
- // no commitment updates, so the only channel monitor update which could also be
- // associated with a channel_ready would be the funding_created/funding_signed
- // monitor update. That monitor update failing implies that we won't send
- // channel_ready until it's been updated, so we can't have a channel_ready and a
- // monitor update here (so we don't bother to handle it correctly below).
- assert!($channel_ready.is_none());
- // A channel monitor update makes no sense without either a channel_ready or a
- // commitment update to process after it. Since we can't have a channel_ready, we
- // only bother to handle the monitor-update + commitment_update case below.
- assert!($commitment_update.is_some());
- }
-
- if let Some(msg) = $channel_ready {
- // Similar to the above, this implies that we're letting the channel_ready fly
- // before it should be allowed to.
- assert!(chanmon_update.is_none());
- send_channel_ready!($channel_state.short_to_id, $channel_state.pending_msg_events, $channel_entry.get(), msg);
- }
- if let Some(msg) = $announcement_sigs {
- $channel_state.pending_msg_events.push(events::MessageSendEvent::SendAnnouncementSignatures {
- node_id: counterparty_node_id,
- msg,
+macro_rules! emit_channel_ready_event {
+ ($self: expr, $channel: expr) => {
+ if $channel.should_emit_channel_ready_event() {
+ {
+ let mut pending_events = $self.pending_events.lock().unwrap();
+ pending_events.push(events::Event::ChannelReady {
+ channel_id: $channel.channel_id(),
+ user_channel_id: $channel.get_user_id(),
+ counterparty_node_id: $channel.get_counterparty_node_id(),
+ channel_type: $channel.get_channel_type().clone(),
});
}
-
- let funding_broadcastable: Option<Transaction> = $funding_broadcastable; // Force type-checking to resolve
- if let Some(monitor_update) = chanmon_update {
- // We only ever broadcast a funding transaction in response to a funding_signed
- // message and the resulting monitor update. Thus, on channel_reestablish
- // message handling we can't have a funding transaction to broadcast. When
- // processing a monitor update finishing resulting in a funding broadcast, we
- // cannot have a second monitor update, thus this case would indicate a bug.
- assert!(funding_broadcastable.is_none());
- // Given we were just reconnected or finished updating a channel monitor, the
- // only case where we can get a new ChannelMonitorUpdate would be if we also
- // have some commitment updates to send as well.
- assert!($commitment_update.is_some());
- if let Err(e) = $self.chain_monitor.update_channel($channel_entry.get().get_funding_txo().unwrap(), monitor_update) {
- // channel_reestablish doesn't guarantee the order it returns is sensical
- // for the messages it returns, but if we're setting what messages to
- // re-transmit on monitor update success, we need to make sure it is sane.
- let mut order = $order;
- if $raa.is_none() {
- order = RAACommitmentOrder::CommitmentFirst;
- }
- break handle_monitor_err!($self, e, $channel_state, $channel_entry, order, $raa.is_some(), true);
- }
- }
-
- macro_rules! handle_cs { () => {
- if let Some(update) = $commitment_update {
- $channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: counterparty_node_id,
- updates: update,
- });
- }
- } }
- macro_rules! handle_raa { () => {
- if let Some(revoke_and_ack) = $raa {
- $channel_state.pending_msg_events.push(events::MessageSendEvent::SendRevokeAndACK {
- node_id: counterparty_node_id,
- msg: revoke_and_ack,
- });
- }
- } }
- match $order {
- RAACommitmentOrder::CommitmentFirst => {
- handle_cs!();
- handle_raa!();
- },
- RAACommitmentOrder::RevokeAndACKFirst => {
- handle_raa!();
- handle_cs!();
- },
- }
- if let Some(tx) = funding_broadcastable {
- log_info!($self.logger, "Broadcasting funding transaction with txid {}", tx.txid());
- $self.tx_broadcaster.broadcast_transaction(&tx);
- }
- break Ok(());
- };
-
- if chanmon_update_is_none {
- // If there was no ChannelMonitorUpdate, we should never generate an Err in the res loop
- // above. Doing so would imply calling handle_err!() from channel_monitor_updated() which
- // should *never* end up calling back to `chain_monitor.update_channel()`.
- assert!(res.is_ok());
- }
-
- (htlc_forwards, res, counterparty_node_id)
- } }
-}
-
-macro_rules! post_handle_chan_restoration {
- ($self: ident, $locked_res: expr) => { {
- let (htlc_forwards, res, counterparty_node_id) = $locked_res;
-
- let _ = handle_error!($self, res, counterparty_node_id);
-
- if let Some(forwards) = htlc_forwards {
- $self.forward_htlcs(&mut [forwards][..]);
+ $channel.set_channel_ready_event_emitted();
}
- } }
+ }
}
-impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelManager<Signer, M, T, K, F, L>
- where M::Target: chain::Watch<Signer>,
- T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
- F::Target: FeeEstimator,
- L::Target: Logger,
+impl<M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref> ChannelManager<M, T, K, F, R, L>
+where
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
+ T::Target: BroadcasterInterface,
+ K::Target: KeysInterface,
+ F::Target: FeeEstimator,
+ R::Target: Router,
+ L::Target: Logger,
{
/// Constructs a new ChannelManager to hold several channels and route between them.
///
/// Users need to notify the new ChannelManager when a new block is connected or
/// disconnected using its `block_connected` and `block_disconnected` methods, starting
/// from after `params.latest_hash`.
- pub fn new(fee_est: F, chain_monitor: M, tx_broadcaster: T, logger: L, keys_manager: K, config: UserConfig, params: ChainParameters) -> Self {
+ pub fn new(fee_est: F, chain_monitor: M, tx_broadcaster: T, router: R, logger: L, keys_manager: K, config: UserConfig, params: ChainParameters) -> Self {
let mut secp_ctx = Secp256k1::new();
secp_ctx.seeded_randomize(&keys_manager.get_secure_random_bytes());
let inbound_pmt_key_material = keys_manager.get_inbound_payment_key_material();
ChannelManager {
default_configuration: config.clone(),
genesis_hash: genesis_block(params.network).header.block_hash(),
- fee_estimator: fee_est,
+ fee_estimator: LowerBoundedFeeEstimator::new(fee_est),
chain_monitor,
tx_broadcaster,
+ router,
best_block: RwLock::new(params.best_block),
channel_state: Mutex::new(ChannelHolder{
- by_id: HashMap::new(),
- short_to_id: HashMap::new(),
- forward_htlcs: HashMap::new(),
- claimable_htlcs: HashMap::new(),
pending_msg_events: Vec::new(),
}),
outbound_scid_aliases: Mutex::new(HashSet::new()),
pending_inbound_payments: Mutex::new(HashMap::new()),
- pending_outbound_payments: Mutex::new(HashMap::new()),
+ pending_outbound_payments: OutboundPayments::new(),
+ forward_htlcs: Mutex::new(HashMap::new()),
+ claimable_payments: Mutex::new(ClaimablePayments { claimable_htlcs: HashMap::new(), pending_claiming_payments: HashMap::new() }),
+ pending_intercepted_htlcs: Mutex::new(HashMap::new()),
+ id_to_peer: Mutex::new(HashMap::new()),
+ short_to_chan_info: FairRwLock::new(HashMap::new()),
our_network_key: keys_manager.get_node_secret(Recipient::Node).unwrap(),
our_network_pubkey: PublicKey::from_secret_key(&secp_ctx, &keys_manager.get_node_secret(Recipient::Node).unwrap()),
inbound_payment_key: expanded_inbound_key,
fake_scid_rand_bytes: keys_manager.get_secure_random_bytes(),
- last_node_announcement_serial: AtomicUsize::new(0),
+ probing_cookie_secret: keys_manager.get_secure_random_bytes(),
+
highest_seen_timestamp: AtomicUsize::new(0),
- per_peer_state: RwLock::new(HashMap::new()),
+ per_peer_state: FairRwLock::new(HashMap::new()),
pending_events: Mutex::new(Vec::new()),
pending_background_events: Mutex::new(Vec::new()),
total_consistency_lock: RwLock::new(()),
- persistence_notifier: PersistenceNotifier::new(),
+ persistence_notifier: Notifier::new(),
keys_manager,
}
}
- /// Gets the current configuration applied to all new channels, as
+ /// Gets the current configuration applied to all new channels.
pub fn get_current_default_configuration(&self) -> &UserConfig {
&self.default_configuration
}
///
/// `user_channel_id` will be provided back as in
/// [`Event::FundingGenerationReady::user_channel_id`] to allow tracking of which events
- /// correspond with which `create_channel` call. Note that the `user_channel_id` defaults to 0
- /// for inbound channels, so you may wish to avoid using 0 for `user_channel_id` here.
- /// `user_channel_id` has no meaning inside of LDK, it is simply copied to events and otherwise
- /// ignored.
+ /// correspond with which `create_channel` call. Note that the `user_channel_id` defaults to a
+ /// randomized value for inbound channels. `user_channel_id` has no meaning inside of LDK, it
+ /// is simply copied to events and otherwise ignored.
///
/// Raises [`APIError::APIMisuseError`] when `channel_value_satoshis` > 2**24 or `push_msat` is
/// greater than `channel_value_satoshis * 1k` or `channel_value_satoshis < 1000`.
/// [`Event::FundingGenerationReady::user_channel_id`]: events::Event::FundingGenerationReady::user_channel_id
/// [`Event::FundingGenerationReady::temporary_channel_id`]: events::Event::FundingGenerationReady::temporary_channel_id
/// [`Event::ChannelClosed::channel_id`]: events::Event::ChannelClosed::channel_id
- pub fn create_channel(&self, their_network_key: PublicKey, channel_value_satoshis: u64, push_msat: u64, user_channel_id: u64, override_config: Option<UserConfig>) -> Result<[u8; 32], APIError> {
+ pub fn create_channel(&self, their_network_key: PublicKey, channel_value_satoshis: u64, push_msat: u64, user_channel_id: u128, override_config: Option<UserConfig>) -> Result<[u8; 32], APIError> {
if channel_value_satoshis < 1000 {
return Err(APIError::APIMisuseError { err: format!("Channel value must be at least 1000 satoshis. It was {}", channel_value_satoshis) });
}
let temporary_channel_id = channel.channel_id();
let mut channel_state = self.channel_state.lock().unwrap();
- match channel_state.by_id.entry(temporary_channel_id) {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(&their_network_key){
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(temporary_channel_id) {
hash_map::Entry::Occupied(_) => {
if cfg!(fuzzing) {
return Err(APIError::APIMisuseError { err: "Fuzzy bad RNG".to_owned() });
}
},
hash_map::Entry::Vacant(entry) => { entry.insert(channel); }
- }
+ }
+ } else { return Err(APIError::ChannelUnavailable { err: format!("Not connected to node: {}", their_network_key) }) }
channel_state.pending_msg_events.push(events::MessageSendEvent::SendOpenChannel {
node_id: their_network_key,
msg: res,
Ok(temporary_channel_id)
}
- fn list_channels_with_filter<Fn: FnMut(&(&[u8; 32], &Channel<Signer>)) -> bool>(&self, f: Fn) -> Vec<ChannelDetails> {
+ fn list_channels_with_filter<Fn: FnMut(&(&[u8; 32], &Channel<<K::Target as SignerProvider>::Signer>)) -> bool + Copy>(&self, f: Fn) -> Vec<ChannelDetails> {
let mut res = Vec::new();
+ // Allocate our best estimate of the number of channels we have in the `res`
+ // Vec. Sadly the `short_to_chan_info` map doesn't cover channels without
+ // a scid or a scid alias, and the `id_to_peer` shouldn't be used outside
+ // of the ChannelMonitor handling. Therefore reallocations may still occur, but is
+ // unlikely as the `short_to_chan_info` map often contains 2 entries for
+ // the same channel.
+ res.reserve(self.short_to_chan_info.read().unwrap().len());
{
- let channel_state = self.channel_state.lock().unwrap();
- res.reserve(channel_state.by_id.len());
- for (channel_id, channel) in channel_state.by_id.iter().filter(f) {
- let balance = channel.get_available_balances();
- let (to_remote_reserve_satoshis, to_self_reserve_satoshis) =
- channel.get_holder_counterparty_selected_channel_reserve_satoshis();
- res.push(ChannelDetails {
- channel_id: (*channel_id).clone(),
- counterparty: ChannelCounterparty {
- node_id: channel.get_counterparty_node_id(),
- features: InitFeatures::empty(),
- unspendable_punishment_reserve: to_remote_reserve_satoshis,
- forwarding_info: channel.counterparty_forwarding_info(),
- // Ensures that we have actually received the `htlc_minimum_msat` value
- // from the counterparty through the `OpenChannel` or `AcceptChannel`
- // message (as they are always the first message from the counterparty).
- // Else `Channel::get_counterparty_htlc_minimum_msat` could return the
- // default `0` value set by `Channel::new_outbound`.
- outbound_htlc_minimum_msat: if channel.have_received_message() {
- Some(channel.get_counterparty_htlc_minimum_msat()) } else { None },
- outbound_htlc_maximum_msat: channel.get_counterparty_htlc_maximum_msat(),
- },
- funding_txo: channel.get_funding_txo(),
- // Note that accept_channel (or open_channel) is always the first message, so
- // `have_received_message` indicates that type negotiation has completed.
- channel_type: if channel.have_received_message() { Some(channel.get_channel_type().clone()) } else { None },
- short_channel_id: channel.get_short_channel_id(),
- outbound_scid_alias: if channel.is_usable() { Some(channel.outbound_scid_alias()) } else { None },
- inbound_scid_alias: channel.latest_inbound_scid_alias(),
- channel_value_satoshis: channel.get_value_satoshis(),
- unspendable_punishment_reserve: to_self_reserve_satoshis,
- balance_msat: balance.balance_msat,
- inbound_capacity_msat: balance.inbound_capacity_msat,
- outbound_capacity_msat: balance.outbound_capacity_msat,
- next_outbound_htlc_limit_msat: balance.next_outbound_htlc_limit_msat,
- user_channel_id: channel.get_user_id(),
- confirmations_required: channel.minimum_depth(),
- force_close_spend_delay: channel.get_counterparty_selected_contest_delay(),
- is_outbound: channel.is_outbound(),
- is_channel_ready: channel.is_usable(),
- is_usable: channel.is_live(),
- is_public: channel.should_announce(),
- inbound_htlc_minimum_msat: Some(channel.get_holder_htlc_minimum_msat()),
- inbound_htlc_maximum_msat: channel.get_holder_htlc_maximum_msat()
- });
- }
- }
- let per_peer_state = self.per_peer_state.read().unwrap();
- for chan in res.iter_mut() {
- if let Some(peer_state) = per_peer_state.get(&chan.counterparty.node_id) {
- chan.counterparty.features = peer_state.lock().unwrap().latest_features.clone();
+ let best_block_height = self.best_block.read().unwrap().height();
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ for (_cp_id, peer_state_mutex) in per_peer_state.iter() {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ for (channel_id, channel) in peer_state.channel_by_id.iter().filter(f) {
+ let balance = channel.get_available_balances();
+ let (to_remote_reserve_satoshis, to_self_reserve_satoshis) =
+ channel.get_holder_counterparty_selected_channel_reserve_satoshis();
+ res.push(ChannelDetails {
+ channel_id: (*channel_id).clone(),
+ counterparty: ChannelCounterparty {
+ node_id: channel.get_counterparty_node_id(),
+ features: peer_state.latest_features.clone(),
+ unspendable_punishment_reserve: to_remote_reserve_satoshis,
+ forwarding_info: channel.counterparty_forwarding_info(),
+ // Ensures that we have actually received the `htlc_minimum_msat` value
+ // from the counterparty through the `OpenChannel` or `AcceptChannel`
+ // message (as they are always the first message from the counterparty).
+ // Else `Channel::get_counterparty_htlc_minimum_msat` could return the
+ // default `0` value set by `Channel::new_outbound`.
+ outbound_htlc_minimum_msat: if channel.have_received_message() {
+ Some(channel.get_counterparty_htlc_minimum_msat()) } else { None },
+ outbound_htlc_maximum_msat: channel.get_counterparty_htlc_maximum_msat(),
+ },
+ funding_txo: channel.get_funding_txo(),
+ // Note that accept_channel (or open_channel) is always the first message, so
+ // `have_received_message` indicates that type negotiation has completed.
+ channel_type: if channel.have_received_message() { Some(channel.get_channel_type().clone()) } else { None },
+ short_channel_id: channel.get_short_channel_id(),
+ outbound_scid_alias: if channel.is_usable() { Some(channel.outbound_scid_alias()) } else { None },
+ inbound_scid_alias: channel.latest_inbound_scid_alias(),
+ channel_value_satoshis: channel.get_value_satoshis(),
+ unspendable_punishment_reserve: to_self_reserve_satoshis,
+ balance_msat: balance.balance_msat,
+ inbound_capacity_msat: balance.inbound_capacity_msat,
+ outbound_capacity_msat: balance.outbound_capacity_msat,
+ next_outbound_htlc_limit_msat: balance.next_outbound_htlc_limit_msat,
+ user_channel_id: channel.get_user_id(),
+ confirmations_required: channel.minimum_depth(),
+ confirmations: Some(channel.get_funding_tx_confirmations(best_block_height)),
+ force_close_spend_delay: channel.get_counterparty_selected_contest_delay(),
+ is_outbound: channel.is_outbound(),
+ is_channel_ready: channel.is_usable(),
+ is_usable: channel.is_live(),
+ is_public: channel.should_announce(),
+ inbound_htlc_minimum_msat: Some(channel.get_holder_htlc_minimum_msat()),
+ inbound_htlc_maximum_msat: channel.get_holder_htlc_maximum_msat(),
+ config: Some(channel.config()),
+ });
+ }
}
}
res
}
/// Helper function that issues the channel close events
- fn issue_channel_close_events(&self, channel: &Channel<Signer>, closure_reason: ClosureReason) {
+ fn issue_channel_close_events(&self, channel: &Channel<<K::Target as SignerProvider>::Signer>, closure_reason: ClosureReason) {
let mut pending_events_lock = self.pending_events.lock().unwrap();
match channel.unbroadcasted_funding() {
Some(transaction) => {
let result: Result<(), _> = loop {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
- match channel_state.by_id.entry(channel_id.clone()) {
- hash_map::Entry::Occupied(mut chan_entry) => {
- if *counterparty_node_id != chan_entry.get().get_counterparty_node_id(){
- return Err(APIError::APIMisuseError { err: "The passed counterparty_node_id doesn't match the channel's counterparty node_id".to_owned() });
- }
- let per_peer_state = self.per_peer_state.read().unwrap();
- let (shutdown_msg, monitor_update, htlcs) = match per_peer_state.get(&counterparty_node_id) {
- Some(peer_state) => {
- let peer_state = peer_state.lock().unwrap();
- let their_features = &peer_state.latest_features;
- chan_entry.get_mut().get_shutdown(&self.keys_manager, their_features, target_feerate_sats_per_1000_weight)?
- },
- None => return Err(APIError::ChannelUnavailable { err: format!("Not connected to node: {}", counterparty_node_id) }),
- };
- failed_htlcs = htlcs;
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(channel_id.clone()) {
+ hash_map::Entry::Occupied(mut chan_entry) => {
+ if *counterparty_node_id != chan_entry.get().get_counterparty_node_id(){
+ return Err(APIError::APIMisuseError { err: "The passed counterparty_node_id doesn't match the channel's counterparty node_id".to_owned() });
+ }
+ let (shutdown_msg, monitor_update, htlcs) = chan_entry.get_mut().get_shutdown(&self.keys_manager, &peer_state.latest_features, target_feerate_sats_per_1000_weight)?;
+ failed_htlcs = htlcs;
- // Update the monitor with the shutdown script if necessary.
- if let Some(monitor_update) = monitor_update {
- if let Err(e) = self.chain_monitor.update_channel(chan_entry.get().get_funding_txo().unwrap(), monitor_update) {
+ // Update the monitor with the shutdown script if necessary.
+ if let Some(monitor_update) = monitor_update {
+ let update_res = self.chain_monitor.update_channel(chan_entry.get().get_funding_txo().unwrap(), monitor_update);
let (result, is_permanent) =
- handle_monitor_err!(self, e, channel_state.short_to_id, chan_entry.get_mut(), RAACommitmentOrder::CommitmentFirst, chan_entry.key(), NO_UPDATE);
+ handle_monitor_update_res!(self, update_res, chan_entry.get_mut(), RAACommitmentOrder::CommitmentFirst, chan_entry.key(), NO_UPDATE);
if is_permanent {
- remove_channel!(self, channel_state, chan_entry);
+ remove_channel!(self, chan_entry);
break result;
}
}
- }
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendShutdown {
- node_id: *counterparty_node_id,
- msg: shutdown_msg
- });
+ channel_state.pending_msg_events.push(events::MessageSendEvent::SendShutdown {
+ node_id: *counterparty_node_id,
+ msg: shutdown_msg
+ });
- if chan_entry.get().is_shutdown() {
- let channel = remove_channel!(self, channel_state, chan_entry);
- if let Ok(channel_update) = self.get_channel_update_for_broadcast(&channel) {
- channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: channel_update
- });
+ if chan_entry.get().is_shutdown() {
+ let channel = remove_channel!(self, chan_entry);
+ if let Ok(channel_update) = self.get_channel_update_for_broadcast(&channel) {
+ channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
+ msg: channel_update
+ });
+ }
+ self.issue_channel_close_events(&channel, ClosureReason::HolderForceClosed);
}
- self.issue_channel_close_events(&channel, ClosureReason::HolderForceClosed);
- }
- break Ok(());
- },
- hash_map::Entry::Vacant(_) => return Err(APIError::ChannelUnavailable{err: "No such channel".to_owned()})
+ break Ok(());
+ },
+ hash_map::Entry::Vacant(_) => return Err(APIError::ChannelUnavailable { err: "No such channel".to_owned() })
+ }
+ } else {
+ return Err(APIError::ChannelUnavailable { err: format!("Not connected to node: {}", counterparty_node_id) });
}
};
for htlc_source in failed_htlcs.drain(..) {
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source.0, &htlc_source.1, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() });
+ let reason = HTLCFailReason::from_failure_code(0x4000 | 8);
+ let receiver = HTLCDestination::NextHopChannel { node_id: Some(*counterparty_node_id), channel_id: *channel_id };
+ self.fail_htlc_backwards_internal(&htlc_source.0, &htlc_source.1, &reason, receiver);
}
let _ = handle_error!(self, result, *counterparty_node_id);
let (monitor_update_option, mut failed_htlcs) = shutdown_res;
log_debug!(self.logger, "Finishing force-closure of channel with {} HTLCs to fail", failed_htlcs.len());
for htlc_source in failed_htlcs.drain(..) {
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source.0, &htlc_source.1, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() });
+ let (source, payment_hash, counterparty_node_id, channel_id) = htlc_source;
+ let reason = HTLCFailReason::from_failure_code(0x4000 | 8);
+ let receiver = HTLCDestination::NextHopChannel { node_id: Some(counterparty_node_id), channel_id };
+ self.fail_htlc_backwards_internal(&source, &payment_hash, &reason, receiver);
}
if let Some((funding_txo, monitor_update)) = monitor_update_option {
// There isn't anything we can do if we get an update failure - we're already
/// `peer_msg` should be set when we receive a message from a peer, but not set when the
/// user closes, which will be re-exposed as the `ChannelClosed` reason.
- fn force_close_channel_with_peer(&self, channel_id: &[u8; 32], peer_node_id: &PublicKey, peer_msg: Option<&String>) -> Result<PublicKey, APIError> {
+ fn force_close_channel_with_peer(&self, channel_id: &[u8; 32], peer_node_id: &PublicKey, peer_msg: Option<&String>, broadcast: bool)
+ -> Result<PublicKey, APIError> {
let mut chan = {
- let mut channel_state_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_state_lock;
- if let hash_map::Entry::Occupied(chan) = channel_state.by_id.entry(channel_id.clone()) {
- if chan.get().get_counterparty_node_id() != *peer_node_id {
- return Err(APIError::ChannelUnavailable{err: "No such channel".to_owned()});
- }
- if let Some(peer_msg) = peer_msg {
- self.issue_channel_close_events(chan.get(),ClosureReason::CounterpartyForceClosed { peer_msg: peer_msg.to_string() });
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(peer_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ if let hash_map::Entry::Occupied(chan) = peer_state.channel_by_id.entry(channel_id.clone()) {
+ if chan.get().get_counterparty_node_id() != *peer_node_id {
+ return Err(APIError::ChannelUnavailable{err: "No such channel".to_owned()});
+ }
+ if let Some(peer_msg) = peer_msg {
+ self.issue_channel_close_events(chan.get(),ClosureReason::CounterpartyForceClosed { peer_msg: peer_msg.to_string() });
+ } else {
+ self.issue_channel_close_events(chan.get(),ClosureReason::HolderForceClosed);
+ }
+ remove_channel!(self, chan)
} else {
- self.issue_channel_close_events(chan.get(),ClosureReason::HolderForceClosed);
+ return Err(APIError::ChannelUnavailable{err: "No such channel".to_owned()});
}
- remove_channel!(self, channel_state, chan)
} else {
- return Err(APIError::ChannelUnavailable{err: "No such channel".to_owned()});
+ return Err(APIError::APIMisuseError{ err: format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", peer_node_id) });
}
};
log_error!(self.logger, "Force-closing channel {}", log_bytes!(channel_id[..]));
- self.finish_force_close_channel(chan.force_shutdown(true));
+ self.finish_force_close_channel(chan.force_shutdown(broadcast));
if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
let mut channel_state = self.channel_state.lock().unwrap();
channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
Ok(chan.get_counterparty_node_id())
}
- /// Force closes a channel, immediately broadcasting the latest local commitment transaction to
- /// the chain and rejecting new HTLCs on the given channel. Fails if `channel_id` is unknown to
- /// the manager, or if the `counterparty_node_id` isn't the counterparty of the corresponding
- /// channel.
- pub fn force_close_channel(&self, channel_id: &[u8; 32], counterparty_node_id: &PublicKey) -> Result<(), APIError> {
+ fn force_close_sending_error(&self, channel_id: &[u8; 32], counterparty_node_id: &PublicKey, broadcast: bool) -> Result<(), APIError> {
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
- match self.force_close_channel_with_peer(channel_id, counterparty_node_id, None) {
+ match self.force_close_channel_with_peer(channel_id, counterparty_node_id, None, broadcast) {
Ok(counterparty_node_id) => {
self.channel_state.lock().unwrap().pending_msg_events.push(
events::MessageSendEvent::HandleError {
}
}
- /// Force close all channels, immediately broadcasting the latest local commitment transaction
- /// for each to the chain and rejecting new HTLCs on each.
- pub fn force_close_all_channels(&self) {
- for chan in self.list_channels() {
- let _ = self.force_close_channel(&chan.channel_id, &chan.counterparty.node_id);
+ /// Force closes a channel, immediately broadcasting the latest local transaction(s) and
+ /// rejecting new HTLCs on the given channel. Fails if `channel_id` is unknown to
+ /// the manager, or if the `counterparty_node_id` isn't the counterparty of the corresponding
+ /// channel.
+ pub fn force_close_broadcasting_latest_txn(&self, channel_id: &[u8; 32], counterparty_node_id: &PublicKey)
+ -> Result<(), APIError> {
+ self.force_close_sending_error(channel_id, counterparty_node_id, true)
+ }
+
+ /// Force closes a channel, rejecting new HTLCs on the given channel but skips broadcasting
+ /// the latest local transaction(s). Fails if `channel_id` is unknown to the manager, or if the
+ /// `counterparty_node_id` isn't the counterparty of the corresponding channel.
+ ///
+ /// You can always get the latest local transaction(s) to broadcast from
+ /// [`ChannelMonitor::get_latest_holder_commitment_txn`].
+ pub fn force_close_without_broadcasting_txn(&self, channel_id: &[u8; 32], counterparty_node_id: &PublicKey)
+ -> Result<(), APIError> {
+ self.force_close_sending_error(channel_id, counterparty_node_id, false)
+ }
+
+ /// Force close all channels, immediately broadcasting the latest local commitment transaction
+ /// for each to the chain and rejecting new HTLCs on each.
+ pub fn force_close_all_channels_broadcasting_latest_txn(&self) {
+ for chan in self.list_channels() {
+ let _ = self.force_close_broadcasting_latest_txn(&chan.channel_id, &chan.counterparty.node_id);
+ }
+ }
+
+ /// Force close all channels rejecting new HTLCs on each but without broadcasting the latest
+ /// local transaction(s).
+ pub fn force_close_all_channels_without_broadcasting_txn(&self) {
+ for chan in self.list_channels() {
+ let _ = self.force_close_without_broadcasting_txn(&chan.channel_id, &chan.counterparty.node_id);
}
}
return Err(ReceiveError {
msg: "Upstream node set CLTV to the wrong value",
err_code: 18,
- err_data: byte_utils::be32_to_array(cltv_expiry).to_vec()
+ err_data: cltv_expiry.to_be_bytes().to_vec()
})
}
// final_expiry_too_soon
// Also, ensure that, in the case of an unknown preimage for the received payment hash, our
// payment logic has enough time to fail the HTLC backward before our onchain logic triggers a
// channel closure (see HTLC_FAIL_BACK_BUFFER rationale).
- if (hop_data.outgoing_cltv_value as u64) <= self.best_block.read().unwrap().height() as u64 + HTLC_FAIL_BACK_BUFFER as u64 + 1 {
+ let current_height: u32 = self.best_block.read().unwrap().height();
+ if (hop_data.outgoing_cltv_value as u64) <= current_height as u64 + HTLC_FAIL_BACK_BUFFER as u64 + 1 {
+ let mut err_data = Vec::with_capacity(12);
+ err_data.extend_from_slice(&amt_msat.to_be_bytes());
+ err_data.extend_from_slice(¤t_height.to_be_bytes());
return Err(ReceiveError {
- err_code: 17,
- err_data: Vec::new(),
+ err_code: 0x4000 | 15, err_data,
msg: "The final CLTV expiry is too soon to handle",
});
}
if hop_data.amt_to_forward > amt_msat {
return Err(ReceiveError {
err_code: 19,
- err_data: byte_utils::be64_to_array(amt_msat).to_vec(),
+ err_data: amt_msat.to_be_bytes().to_vec(),
msg: "Upstream node sent less than we were supposed to receive in payment",
});
}
let routing = match hop_data.format {
- msgs::OnionHopDataFormat::Legacy { .. } => {
- return Err(ReceiveError {
- err_code: 0x4000|0x2000|3,
- err_data: Vec::new(),
- msg: "We require payment_secrets",
- });
- },
msgs::OnionHopDataFormat::NonFinalNode { .. } => {
return Err(ReceiveError {
err_code: 0x4000|22,
routing,
payment_hash,
incoming_shared_secret: shared_secret,
- amt_to_forward: amt_msat,
+ incoming_amt_msat: Some(amt_msat),
+ outgoing_amt_msat: amt_msat,
outgoing_cltv_value: hop_data.outgoing_cltv_value,
})
}
- fn decode_update_add_htlc_onion(&self, msg: &msgs::UpdateAddHTLC) -> (PendingHTLCStatus, MutexGuard<ChannelHolder<Signer>>) {
+ fn decode_update_add_htlc_onion(&self, msg: &msgs::UpdateAddHTLC) -> PendingHTLCStatus {
macro_rules! return_malformed_err {
($msg: expr, $err_code: expr) => {
{
log_info!(self.logger, "Failed to accept/forward incoming HTLC: {}", $msg);
- return (PendingHTLCStatus::Fail(HTLCFailureMsg::Malformed(msgs::UpdateFailMalformedHTLC {
+ return PendingHTLCStatus::Fail(HTLCFailureMsg::Malformed(msgs::UpdateFailMalformedHTLC {
channel_id: msg.channel_id,
htlc_id: msg.htlc_id,
sha256_of_onion: Sha256::hash(&msg.onion_routing_packet.hop_data).into_inner(),
failure_code: $err_code,
- })), self.channel_state.lock().unwrap());
+ }));
}
}
}
//node knows the HMAC matched, so they already know what is there...
return_malformed_err!("Unknown onion packet version", 0x8000 | 0x4000 | 4);
}
-
- let mut channel_state = None;
macro_rules! return_err {
($msg: expr, $err_code: expr, $data: expr) => {
{
log_info!(self.logger, "Failed to accept/forward incoming HTLC: {}", $msg);
- if channel_state.is_none() {
- channel_state = Some(self.channel_state.lock().unwrap());
- }
- return (PendingHTLCStatus::Fail(HTLCFailureMsg::Relay(msgs::UpdateFailHTLC {
+ return PendingHTLCStatus::Fail(HTLCFailureMsg::Relay(msgs::UpdateFailHTLC {
channel_id: msg.channel_id,
htlc_id: msg.htlc_id,
- reason: onion_utils::build_first_hop_failure_packet(&shared_secret, $err_code, $data),
- })), channel_state.unwrap());
+ reason: HTLCFailReason::reason($err_code, $data.to_vec())
+ .get_encrypted_failure_packet(&shared_secret, &None),
+ }));
}
}
}
- let next_hop = match onion_utils::decode_next_hop(shared_secret, &msg.onion_routing_packet.hop_data[..], msg.onion_routing_packet.hmac, msg.payment_hash) {
+ let next_hop = match onion_utils::decode_next_payment_hop(shared_secret, &msg.onion_routing_packet.hop_data[..], msg.onion_routing_packet.hmac, msg.payment_hash) {
Ok(res) => res,
Err(onion_utils::OnionDecodeErr::Malformed { err_msg, err_code }) => {
return_malformed_err!(err_msg, err_code);
};
let short_channel_id = match next_hop_data.format {
- msgs::OnionHopDataFormat::Legacy { short_channel_id } => short_channel_id,
msgs::OnionHopDataFormat::NonFinalNode { short_channel_id } => short_channel_id,
msgs::OnionHopDataFormat::FinalNode { .. } => {
return_err!("Final Node OnionHopData provided for us as an intermediary node", 0x4000 | 22, &[0;0]);
},
payment_hash: msg.payment_hash.clone(),
incoming_shared_secret: shared_secret,
- amt_to_forward: next_hop_data.amt_to_forward,
+ incoming_amt_msat: Some(msg.amount_msat),
+ outgoing_amt_msat: next_hop_data.amt_to_forward,
outgoing_cltv_value: next_hop_data.outgoing_cltv_value,
})
}
};
- channel_state = Some(self.channel_state.lock().unwrap());
- if let &PendingHTLCStatus::Forward(PendingHTLCInfo { ref routing, ref amt_to_forward, ref outgoing_cltv_value, .. }) = &pending_forward_info {
+ if let &PendingHTLCStatus::Forward(PendingHTLCInfo { ref routing, ref outgoing_amt_msat, ref outgoing_cltv_value, .. }) = &pending_forward_info {
// If short_channel_id is 0 here, we'll reject the HTLC as there cannot be a channel
// with a short_channel_id of 0. This is important as various things later assume
// short_channel_id is non-0 in any ::Forward.
if let &PendingHTLCRouting::Forward { ref short_channel_id, .. } = routing {
- let id_option = channel_state.as_ref().unwrap().short_to_id.get(&short_channel_id).cloned();
- if let Some((err, code, chan_update)) = loop {
- let forwarding_id_opt = match id_option {
+ if let Some((err, mut code, chan_update)) = loop {
+ let id_option = self.short_to_chan_info.read().unwrap().get(&short_channel_id).cloned();
+ let forwarding_chan_info_opt = match id_option {
None => { // unknown_next_peer
// Note that this is likely a timing oracle for detecting whether an scid is a
- // phantom.
- if fake_scid::is_valid_phantom(&self.fake_scid_rand_bytes, *short_channel_id) {
+ // phantom or an intercept.
+ if (self.default_configuration.accept_intercept_htlcs &&
+ fake_scid::is_valid_intercept(&self.fake_scid_rand_bytes, *short_channel_id, &self.genesis_hash)) ||
+ fake_scid::is_valid_phantom(&self.fake_scid_rand_bytes, *short_channel_id, &self.genesis_hash)
+ {
None
} else {
break Some(("Don't have available channel for forwarding as requested.", 0x4000 | 10, None));
}
},
- Some(id) => Some(id.clone()),
+ Some((cp_id, id)) => Some((cp_id.clone(), id.clone())),
};
- let (chan_update_opt, forwardee_cltv_expiry_delta) = if let Some(forwarding_id) = forwarding_id_opt {
- let chan = channel_state.as_mut().unwrap().by_id.get_mut(&forwarding_id).unwrap();
+ let chan_update_opt = if let Some((counterparty_node_id, forwarding_id)) = forwarding_chan_info_opt {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let None = per_peer_state.get(&counterparty_node_id) {
+ break Some(("Don't have available channel for forwarding as requested.", 0x4000 | 10, None));
+ }
+ let peer_state_mutex = per_peer_state.get(&counterparty_node_id).unwrap();
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ let chan = match peer_state.channel_by_id.get_mut(&forwarding_id) {
+ None => {
+ // Channel was removed. The short_to_chan_info and channel_by_id maps
+ // have no consistency guarantees.
+ break Some(("Don't have available channel for forwarding as requested.", 0x4000 | 10, None));
+ },
+ Some(chan) => chan
+ };
if !chan.should_announce() && !self.default_configuration.accept_forwards_to_priv_channels {
// Note that the behavior here should be identical to the above block - we
// should NOT reveal the existence or non-existence of a private channel if
if !chan.is_live() { // channel_disabled
break Some(("Forwarding channel is not in a ready state.", 0x1000 | 20, chan_update_opt));
}
- if *amt_to_forward < chan.get_counterparty_htlc_minimum_msat() { // amount_below_minimum
+ if *outgoing_amt_msat < chan.get_counterparty_htlc_minimum_msat() { // amount_below_minimum
break Some(("HTLC amount was below the htlc_minimum_msat", 0x1000 | 11, chan_update_opt));
}
- let fee = amt_to_forward.checked_mul(chan.get_fee_proportional_millionths() as u64)
- .and_then(|prop_fee| { (prop_fee / 1000000)
- .checked_add(chan.get_outbound_forwarding_fee_base_msat() as u64) });
- if fee.is_none() || msg.amount_msat < fee.unwrap() || (msg.amount_msat - fee.unwrap()) < *amt_to_forward { // fee_insufficient
- break Some(("Prior hop has deviated from specified fees parameters or origin node has obsolete ones", 0x1000 | 12, chan_update_opt));
+ if let Err((err, code)) = chan.htlc_satisfies_config(&msg, *outgoing_amt_msat, *outgoing_cltv_value) {
+ break Some((err, code, chan_update_opt));
+ }
+ chan_update_opt
+ } else {
+ if (msg.cltv_expiry as u64) < (*outgoing_cltv_value) as u64 + MIN_CLTV_EXPIRY_DELTA as u64 {
+ // We really should set `incorrect_cltv_expiry` here but as we're not
+ // forwarding over a real channel we can't generate a channel_update
+ // for it. Instead we just return a generic temporary_node_failure.
+ break Some((
+ "Forwarding node has tampered with the intended HTLC values or origin node has an obsolete cltv_expiry_delta",
+ 0x2000 | 2, None,
+ ));
}
- (chan_update_opt, chan.get_cltv_expiry_delta())
- } else { (None, MIN_CLTV_EXPIRY_DELTA) };
+ None
+ };
- if (msg.cltv_expiry as u64) < (*outgoing_cltv_value) as u64 + forwardee_cltv_expiry_delta as u64 { // incorrect_cltv_expiry
- break Some(("Forwarding node has tampered with the intended HTLC values or origin node has an obsolete cltv_expiry_delta", 0x1000 | 13, chan_update_opt));
- }
let cur_height = self.best_block.read().unwrap().height() + 1;
// Theoretically, channel counterparty shouldn't send us a HTLC expiring now,
// but we want to be robust wrt to counterparty packet sanitization (see
(chan_update.serialized_length() as u16 + 2).write(&mut res).expect("Writes cannot fail");
msgs::ChannelUpdate::TYPE.write(&mut res).expect("Writes cannot fail");
chan_update.write(&mut res).expect("Writes cannot fail");
+ } else if code & 0x1000 == 0x1000 {
+ // If we're trying to return an error that requires a `channel_update` but
+ // we're forwarding to a phantom or intercept "channel" (i.e. cannot
+ // generate an update), just use the generic "temporary_node_failure"
+ // instead.
+ code = 0x2000 | 2;
}
return_err!(err, code, &res.0[..]);
}
}
}
- (pending_forward_info, channel_state.unwrap())
+ pending_forward_info
}
/// Gets the current channel_update for the given channel. This first checks if the channel is
/// public, and thus should be called whenever the result is going to be passed out in a
/// [`MessageSendEvent::BroadcastChannelUpdate`] event.
///
- /// May be called with channel_state already locked!
- fn get_channel_update_for_broadcast(&self, chan: &Channel<Signer>) -> Result<msgs::ChannelUpdate, LightningError> {
+ /// May be called with peer_state already locked!
+ fn get_channel_update_for_broadcast(&self, chan: &Channel<<K::Target as SignerProvider>::Signer>) -> Result<msgs::ChannelUpdate, LightningError> {
if !chan.should_announce() {
return Err(LightningError {
err: "Cannot broadcast a channel_update for a private channel".to_owned(),
/// is public (only returning an Err if the channel does not yet have an assigned short_id),
/// and thus MUST NOT be called unless the recipient of the resulting message has already
/// provided evidence that they know about the existence of the channel.
- /// May be called with channel_state already locked!
- fn get_channel_update_for_unicast(&self, chan: &Channel<Signer>) -> Result<msgs::ChannelUpdate, LightningError> {
+ /// May be called with peer_state already locked!
+ fn get_channel_update_for_unicast(&self, chan: &Channel<<K::Target as SignerProvider>::Signer>) -> Result<msgs::ChannelUpdate, LightningError> {
log_trace!(self.logger, "Attempting to generate channel update for channel {}", log_bytes!(chan.channel_id()));
let short_channel_id = match chan.get_short_channel_id().or(chan.latest_inbound_scid_alias()) {
None => return Err(LightningError{err: "Channel not yet established".to_owned(), action: msgs::ErrorAction::IgnoreError}),
self.get_channel_update_for_onion(short_channel_id, chan)
}
- fn get_channel_update_for_onion(&self, short_channel_id: u64, chan: &Channel<Signer>) -> Result<msgs::ChannelUpdate, LightningError> {
+ fn get_channel_update_for_onion(&self, short_channel_id: u64, chan: &Channel<<K::Target as SignerProvider>::Signer>) -> Result<msgs::ChannelUpdate, LightningError> {
log_trace!(self.logger, "Generating channel update for channel {}", log_bytes!(chan.channel_id()));
let were_node_one = PublicKey::from_secret_key(&self.secp_ctx, &self.our_network_key).serialize()[..] < chan.get_counterparty_node_id().serialize()[..];
flags: (!were_node_one) as u8 | ((!chan.is_live() as u8) << 1),
cltv_expiry_delta: chan.get_cltv_expiry_delta(),
htlc_minimum_msat: chan.get_counterparty_htlc_minimum_msat(),
- htlc_maximum_msat: OptionalField::Present(chan.get_announced_htlc_max_msat()),
+ htlc_maximum_msat: chan.get_announced_htlc_max_msat(),
fee_base_msat: chan.get_outbound_forwarding_fee_base_msat(),
fee_proportional_millionths: chan.get_fee_proportional_millionths(),
excess_data: Vec::new(),
}
// Only public for testing, this should otherwise never be called direcly
- pub(crate) fn send_payment_along_path(&self, path: &Vec<RouteHop>, payment_params: &Option<PaymentParameters>, payment_hash: &PaymentHash, payment_secret: &Option<PaymentSecret>, total_value: u64, cur_height: u32, payment_id: PaymentId, keysend_preimage: &Option<PaymentPreimage>) -> Result<(), APIError> {
+ pub(crate) fn send_payment_along_path(&self, path: &Vec<RouteHop>, payment_params: &Option<PaymentParameters>, payment_hash: &PaymentHash, payment_secret: &Option<PaymentSecret>, total_value: u64, cur_height: u32, payment_id: PaymentId, keysend_preimage: &Option<PaymentPreimage>, session_priv_bytes: [u8; 32]) -> Result<(), APIError> {
log_trace!(self.logger, "Attempting to send payment for path with next hop {}", path.first().unwrap().short_channel_id);
let prng_seed = self.keys_manager.get_secure_random_bytes();
- let session_priv_bytes = self.keys_manager.get_secure_random_bytes();
let session_priv = SecretKey::from_slice(&session_priv_bytes[..]).expect("RNG is busted");
let onion_keys = onion_utils::construct_onion_keys(&self.secp_ctx, &path, &session_priv)
- .map_err(|_| APIError::RouteError{err: "Pubkey along hop was maliciously selected"})?;
+ .map_err(|_| APIError::InvalidRoute{err: "Pubkey along hop was maliciously selected"})?;
let (onion_payloads, htlc_msat, htlc_cltv) = onion_utils::build_onion_payloads(path, total_value, payment_secret, cur_height, keysend_preimage)?;
if onion_utils::route_size_insane(&onion_payloads) {
- return Err(APIError::RouteError{err: "Route size too large considering onion data"});
+ return Err(APIError::InvalidRoute{err: "Route size too large considering onion data"});
}
let onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, prng_seed, payment_hash);
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
let err: Result<(), _> = loop {
- let mut channel_lock = self.channel_state.lock().unwrap();
-
- let mut pending_outbounds = self.pending_outbound_payments.lock().unwrap();
- let payment_entry = pending_outbounds.entry(payment_id);
- if let hash_map::Entry::Occupied(payment) = &payment_entry {
- if !payment.get().is_retryable() {
- return Err(APIError::RouteError {
- err: "Payment already completed"
- });
- }
- }
-
- let id = match channel_lock.short_to_id.get(&path.first().unwrap().short_channel_id) {
+ let (counterparty_node_id, id) = match self.short_to_chan_info.read().unwrap().get(&path.first().unwrap().short_channel_id) {
None => return Err(APIError::ChannelUnavailable{err: "No channel available with first hop!".to_owned()}),
- Some(id) => id.clone(),
+ Some((cp_id, chan_id)) => (cp_id.clone(), chan_id.clone()),
};
- macro_rules! insert_outbound_payment {
- () => {
- let payment = payment_entry.or_insert_with(|| PendingOutboundPayment::Retryable {
- session_privs: HashSet::new(),
- pending_amt_msat: 0,
- pending_fee_msat: Some(0),
- payment_hash: *payment_hash,
- payment_secret: *payment_secret,
- starting_block_height: self.best_block.read().unwrap().height(),
- total_msat: total_value,
- });
- assert!(payment.insert(session_priv_bytes, path));
- }
- }
-
+ let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
- if let hash_map::Entry::Occupied(mut chan) = channel_state.by_id.entry(id) {
- match {
- if chan.get().get_counterparty_node_id() != path.first().unwrap().pubkey {
- return Err(APIError::RouteError{err: "Node ID mismatch on first hop!"});
- }
- if !chan.get().is_live() {
- return Err(APIError::ChannelUnavailable{err: "Peer for first hop currently disconnected/pending monitor update!".to_owned()});
- }
- break_chan_entry!(self, chan.get_mut().send_htlc_and_commit(
- htlc_msat, payment_hash.clone(), htlc_cltv, HTLCSource::OutboundRoute {
- path: path.clone(),
- session_priv: session_priv.clone(),
- first_hop_htlc_msat: htlc_msat,
- payment_id,
- payment_secret: payment_secret.clone(),
- payment_params: payment_params.clone(),
- }, onion_packet, &self.logger),
- channel_state, chan)
- } {
- Some((update_add, commitment_signed, monitor_update)) => {
- if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
- maybe_break_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::CommitmentFirst, false, true);
- // Note that MonitorUpdateFailed here indicates (per function docs)
- // that we will resend the commitment update once monitor updating
- // is restored. Therefore, we must return an error indicating that
- // it is unsafe to retry the payment wholesale, which we do in the
- // send_payment check for MonitorUpdateFailed, below.
- insert_outbound_payment!(); // Only do this after possibly break'ing on Perm failure above.
- return Err(APIError::MonitorUpdateFailed);
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(&counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ if let hash_map::Entry::Occupied(mut chan) = peer_state.channel_by_id.entry(id) {
+ match {
+ if !chan.get().is_live() {
+ return Err(APIError::ChannelUnavailable{err: "Peer for first hop currently disconnected/pending monitor update!".to_owned()});
}
- insert_outbound_payment!();
+ break_chan_entry!(self, chan.get_mut().send_htlc_and_commit(
+ htlc_msat, payment_hash.clone(), htlc_cltv, HTLCSource::OutboundRoute {
+ path: path.clone(),
+ session_priv: session_priv.clone(),
+ first_hop_htlc_msat: htlc_msat,
+ payment_id,
+ payment_secret: payment_secret.clone(),
+ payment_params: payment_params.clone(),
+ }, onion_packet, &self.logger),
+ chan)
+ } {
+ Some((update_add, commitment_signed, monitor_update)) => {
+ let update_err = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update);
+ let chan_id = chan.get().channel_id();
+ match (update_err,
+ handle_monitor_update_res!(self, update_err, chan,
+ RAACommitmentOrder::CommitmentFirst, false, true))
+ {
+ (ChannelMonitorUpdateStatus::PermanentFailure, Err(e)) => break Err(e),
+ (ChannelMonitorUpdateStatus::Completed, Ok(())) => {},
+ (ChannelMonitorUpdateStatus::InProgress, Err(_)) => {
+ // Note that MonitorUpdateInProgress here indicates (per function
+ // docs) that we will resend the commitment update once monitor
+ // updating completes. Therefore, we must return an error
+ // indicating that it is unsafe to retry the payment wholesale,
+ // which we do in the send_payment check for
+ // MonitorUpdateInProgress, below.
+ return Err(APIError::MonitorUpdateInProgress);
+ },
+ _ => unreachable!(),
+ }
- log_debug!(self.logger, "Sending payment along path resulted in a commitment_signed for channel {}", log_bytes!(chan.get().channel_id()));
- channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: path.first().unwrap().pubkey,
- updates: msgs::CommitmentUpdate {
- update_add_htlcs: vec![update_add],
- update_fulfill_htlcs: Vec::new(),
- update_fail_htlcs: Vec::new(),
- update_fail_malformed_htlcs: Vec::new(),
- update_fee: None,
- commitment_signed,
- },
- });
- },
- None => { insert_outbound_payment!(); },
+ log_debug!(self.logger, "Sending payment along path resulted in a commitment_signed for channel {}", log_bytes!(chan_id));
+ channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
+ node_id: path.first().unwrap().pubkey,
+ updates: msgs::CommitmentUpdate {
+ update_add_htlcs: vec![update_add],
+ update_fulfill_htlcs: Vec::new(),
+ update_fail_htlcs: Vec::new(),
+ update_fail_malformed_htlcs: Vec::new(),
+ update_fee: None,
+ commitment_signed,
+ },
+ });
+ },
+ None => { },
+ }
+ } else {
+ // The channel was likely removed after we fetched the id from the
+ // `short_to_chan_info` map, but before we successfully locked the
+ // `channel_by_id` map.
+ // This can occur as no consistency guarantees exists between the two maps.
+ return Err(APIError::ChannelUnavailable{err: "No channel available with first hop!".to_owned()});
}
- } else { unreachable!(); }
+ } else { return Err(APIError::InvalidRoute{err: "No peer matching the path's first hop found!" })}
return Ok(());
};
/// Value parameters are provided via the last hop in route, see documentation for RouteHop
/// fields for more info.
///
- /// Note that if the payment_hash already exists elsewhere (eg you're sending a duplicative
- /// payment), we don't do anything to stop you! We always try to ensure that if the provided
- /// next hop knows the preimage to payment_hash they can claim an additional amount as
- /// specified in the last hop in the route! Thus, you should probably do your own
- /// payment_preimage tracking (which you should already be doing as they represent "proof of
- /// payment") and prevent double-sends yourself.
+ /// If a pending payment is currently in-flight with the same [`PaymentId`] provided, this
+ /// method will error with an [`APIError::InvalidRoute`]. Note, however, that once a payment
+ /// is no longer pending (either via [`ChannelManager::abandon_payment`], or handling of an
+ /// [`Event::PaymentSent`]) LDK will not stop you from sending a second payment with the same
+ /// [`PaymentId`].
+ ///
+ /// Thus, in order to ensure duplicate payments are not sent, you should implement your own
+ /// tracking of payments, including state to indicate once a payment has completed. Because you
+ /// should also ensure that [`PaymentHash`]es are not re-used, for simplicity, you should
+ /// consider using the [`PaymentHash`] as the key for tracking payments. In that case, the
+ /// [`PaymentId`] should be a copy of the [`PaymentHash`] bytes.
///
- /// May generate SendHTLCs message(s) event on success, which should be relayed.
+ /// May generate SendHTLCs message(s) event on success, which should be relayed (e.g. via
+ /// [`PeerManager::process_events`]).
///
/// Each path may have a different return value, and PaymentSendValue may return a Vec with
/// each entry matching the corresponding-index entry in the route paths, see
/// PaymentSendFailure for more info.
///
/// In general, a path may raise:
- /// * APIError::RouteError when an invalid route or forwarding parameter (cltv_delta, fee,
+ /// * [`APIError::InvalidRoute`] when an invalid route or forwarding parameter (cltv_delta, fee,
/// node public key) is specified.
- /// * APIError::ChannelUnavailable if the next-hop channel is not available for updates
+ /// * [`APIError::ChannelUnavailable`] if the next-hop channel is not available for updates
/// (including due to previous monitor update failure or new permanent monitor update
/// failure).
- /// * APIError::MonitorUpdateFailed if a new monitor update failure prevented sending the
+ /// * [`APIError::MonitorUpdateInProgress`] if a new monitor update failure prevented sending the
/// relevant updates.
///
/// Note that depending on the type of the PaymentSendFailure the HTLC may have been
/// newer nodes, it will be provided to you in the invoice. If you do not have one, the Route
/// must not contain multiple paths as multi-path payments require a recipient-provided
/// payment_secret.
+ ///
/// If a payment_secret *is* provided, we assume that the invoice had the payment_secret feature
/// bit set (either as required or as available). If multiple paths are present in the Route,
/// we assume the invoice had the basic_mpp feature set.
- pub fn send_payment(&self, route: &Route, payment_hash: PaymentHash, payment_secret: &Option<PaymentSecret>) -> Result<PaymentId, PaymentSendFailure> {
- self.send_payment_internal(route, payment_hash, payment_secret, None, None, None)
- }
-
- fn send_payment_internal(&self, route: &Route, payment_hash: PaymentHash, payment_secret: &Option<PaymentSecret>, keysend_preimage: Option<PaymentPreimage>, payment_id: Option<PaymentId>, recv_value_msat: Option<u64>) -> Result<PaymentId, PaymentSendFailure> {
- if route.paths.len() < 1 {
- return Err(PaymentSendFailure::ParameterError(APIError::RouteError{err: "There must be at least one path to send over"}));
- }
- if route.paths.len() > 10 {
- // This limit is completely arbitrary - there aren't any real fundamental path-count
- // limits. After we support retrying individual paths we should likely bump this, but
- // for now more than 10 paths likely carries too much one-path failure.
- return Err(PaymentSendFailure::ParameterError(APIError::RouteError{err: "Sending over more than 10 paths is not currently supported"}));
- }
- if payment_secret.is_none() && route.paths.len() > 1 {
- return Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError{err: "Payment secret is required for multi-path payments".to_string()}));
- }
- let mut total_value = 0;
- let our_node_id = self.get_our_node_id();
- let mut path_errs = Vec::with_capacity(route.paths.len());
- let payment_id = if let Some(id) = payment_id { id } else { PaymentId(self.keys_manager.get_secure_random_bytes()) };
- 'path_check: for path in route.paths.iter() {
- if path.len() < 1 || path.len() > 20 {
- path_errs.push(Err(APIError::RouteError{err: "Path didn't go anywhere/had bogus size"}));
- continue 'path_check;
- }
- for (idx, hop) in path.iter().enumerate() {
- if idx != path.len() - 1 && hop.pubkey == our_node_id {
- path_errs.push(Err(APIError::RouteError{err: "Path went through us but wasn't a simple rebalance loop to us"}));
- continue 'path_check;
- }
- }
- total_value += path.last().unwrap().fee_msat;
- path_errs.push(Ok(()));
- }
- if path_errs.iter().any(|e| e.is_err()) {
- return Err(PaymentSendFailure::PathParameterError(path_errs));
- }
- if let Some(amt_msat) = recv_value_msat {
- debug_assert!(amt_msat >= total_value);
- total_value = amt_msat;
- }
-
- let cur_height = self.best_block.read().unwrap().height() + 1;
- let mut results = Vec::new();
- for path in route.paths.iter() {
- results.push(self.send_payment_along_path(&path, &route.payment_params, &payment_hash, payment_secret, total_value, cur_height, payment_id, &keysend_preimage));
- }
- let mut has_ok = false;
- let mut has_err = false;
- let mut pending_amt_unsent = 0;
- let mut max_unsent_cltv_delta = 0;
- for (res, path) in results.iter().zip(route.paths.iter()) {
- if res.is_ok() { has_ok = true; }
- if res.is_err() { has_err = true; }
- if let &Err(APIError::MonitorUpdateFailed) = res {
- // MonitorUpdateFailed is inherently unsafe to retry, so we call it a
- // PartialFailure.
- has_err = true;
- has_ok = true;
- } else if res.is_err() {
- pending_amt_unsent += path.last().unwrap().fee_msat;
- max_unsent_cltv_delta = cmp::max(max_unsent_cltv_delta, path.last().unwrap().cltv_expiry_delta);
- }
- }
- if has_err && has_ok {
- Err(PaymentSendFailure::PartialFailure {
- results,
- payment_id,
- failed_paths_retry: if pending_amt_unsent != 0 {
- if let Some(payment_params) = &route.payment_params {
- Some(RouteParameters {
- payment_params: payment_params.clone(),
- final_value_msat: pending_amt_unsent,
- final_cltv_expiry_delta: max_unsent_cltv_delta,
- })
- } else { None }
- } else { None },
- })
- } else if has_err {
- // If we failed to send any paths, we shouldn't have inserted the new PaymentId into
- // our `pending_outbound_payments` map at all.
- debug_assert!(self.pending_outbound_payments.lock().unwrap().get(&payment_id).is_none());
- Err(PaymentSendFailure::AllFailedRetrySafe(results.drain(..).map(|r| r.unwrap_err()).collect()))
- } else {
- Ok(payment_id)
- }
+ ///
+ /// [`Event::PaymentSent`]: events::Event::PaymentSent
+ /// [`PeerManager::process_events`]: crate::ln::peer_handler::PeerManager::process_events
+ pub fn send_payment(&self, route: &Route, payment_hash: PaymentHash, payment_secret: &Option<PaymentSecret>, payment_id: PaymentId) -> Result<(), PaymentSendFailure> {
+ let best_block_height = self.best_block.read().unwrap().height();
+ self.pending_outbound_payments
+ .send_payment_with_route(route, payment_hash, payment_secret, payment_id, &self.keys_manager, best_block_height,
+ |path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv|
+ self.send_payment_along_path(path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv))
+ }
+
+ #[cfg(test)]
+ fn test_send_payment_internal(&self, route: &Route, payment_hash: PaymentHash, payment_secret: &Option<PaymentSecret>, keysend_preimage: Option<PaymentPreimage>, payment_id: PaymentId, recv_value_msat: Option<u64>, onion_session_privs: Vec<[u8; 32]>) -> Result<(), PaymentSendFailure> {
+ let best_block_height = self.best_block.read().unwrap().height();
+ self.pending_outbound_payments.test_send_payment_internal(route, payment_hash, payment_secret, keysend_preimage, payment_id, recv_value_msat, onion_session_privs, &self.keys_manager, best_block_height,
+ |path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv|
+ self.send_payment_along_path(path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv))
}
+ #[cfg(test)]
+ pub(crate) fn test_add_new_pending_payment(&self, payment_hash: PaymentHash, payment_secret: Option<PaymentSecret>, payment_id: PaymentId, route: &Route) -> Result<Vec<[u8; 32]>, PaymentSendFailure> {
+ let best_block_height = self.best_block.read().unwrap().height();
+ self.pending_outbound_payments.test_add_new_pending_payment(payment_hash, payment_secret, payment_id, route, &self.keys_manager, best_block_height)
+ }
+
+
/// Retries a payment along the given [`Route`].
///
/// Errors returned are a superset of those returned from [`send_payment`], so see
/// [`send_payment`]: [`ChannelManager::send_payment`]
/// [`abandon_payment`]: [`ChannelManager::abandon_payment`]
pub fn retry_payment(&self, route: &Route, payment_id: PaymentId) -> Result<(), PaymentSendFailure> {
- const RETRY_OVERFLOW_PERCENTAGE: u64 = 10;
- for path in route.paths.iter() {
- if path.len() == 0 {
- return Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError {
- err: "length-0 path in route".to_string()
- }))
- }
- }
-
- let (total_msat, payment_hash, payment_secret) = {
- let outbounds = self.pending_outbound_payments.lock().unwrap();
- if let Some(payment) = outbounds.get(&payment_id) {
- match payment {
- PendingOutboundPayment::Retryable {
- total_msat, payment_hash, payment_secret, pending_amt_msat, ..
- } => {
- let retry_amt_msat: u64 = route.paths.iter().map(|path| path.last().unwrap().fee_msat).sum();
- if retry_amt_msat + *pending_amt_msat > *total_msat * (100 + RETRY_OVERFLOW_PERCENTAGE) / 100 {
- return Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError {
- err: format!("retry_amt_msat of {} will put pending_amt_msat (currently: {}) more than 10% over total_payment_amt_msat of {}", retry_amt_msat, pending_amt_msat, total_msat).to_string()
- }))
- }
- (*total_msat, *payment_hash, *payment_secret)
- },
- PendingOutboundPayment::Legacy { .. } => {
- return Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError {
- err: "Unable to retry payments that were initially sent on LDK versions prior to 0.0.102".to_string()
- }))
- },
- PendingOutboundPayment::Fulfilled { .. } => {
- return Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError {
- err: "Payment already completed".to_owned()
- }));
- },
- PendingOutboundPayment::Abandoned { .. } => {
- return Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError {
- err: "Payment already abandoned (with some HTLCs still pending)".to_owned()
- }));
- },
- }
- } else {
- return Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError {
- err: format!("Payment with ID {} not found", log_bytes!(payment_id.0)),
- }))
- }
- };
- return self.send_payment_internal(route, payment_hash, &payment_secret, None, Some(payment_id), Some(total_msat)).map(|_| ())
+ let best_block_height = self.best_block.read().unwrap().height();
+ self.pending_outbound_payments.retry_payment_with_route(route, payment_id, &self.keys_manager, best_block_height,
+ |path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv|
+ self.send_payment_along_path(path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv))
}
/// Signals that no further retries for the given payment will occur.
///
- /// After this method returns, any future calls to [`retry_payment`] for the given `payment_id`
- /// will fail with [`PaymentSendFailure::ParameterError`]. If no such event has been generated,
- /// an [`Event::PaymentFailed`] event will be generated as soon as there are no remaining
- /// pending HTLCs for this payment.
+ /// After this method returns, no future calls to [`retry_payment`] for the given `payment_id`
+ /// are allowed. If no [`Event::PaymentFailed`] event had been generated before, one will be
+ /// generated as soon as there are no remaining pending HTLCs for this payment.
///
/// Note that calling this method does *not* prevent a payment from succeeding. You must still
/// wait until you receive either a [`Event::PaymentFailed`] or [`Event::PaymentSent`] event to
/// determine the ultimate status of a payment.
///
+ /// If an [`Event::PaymentFailed`] event is generated and we restart without this
+ /// [`ChannelManager`] having been persisted, the payment may still be in the pending state
+ /// upon restart. This allows further calls to [`retry_payment`] (and requiring a second call
+ /// to [`abandon_payment`] to mark the payment as failed again). Otherwise, future calls to
+ /// [`retry_payment`] will fail with [`PaymentSendFailure::ParameterError`].
+ ///
+ /// [`abandon_payment`]: Self::abandon_payment
/// [`retry_payment`]: Self::retry_payment
/// [`Event::PaymentFailed`]: events::Event::PaymentFailed
/// [`Event::PaymentSent`]: events::Event::PaymentSent
pub fn abandon_payment(&self, payment_id: PaymentId) {
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
-
- let mut outbounds = self.pending_outbound_payments.lock().unwrap();
- if let hash_map::Entry::Occupied(mut payment) = outbounds.entry(payment_id) {
- if let Ok(()) = payment.get_mut().mark_abandoned() {
- if payment.get().remaining_parts() == 0 {
- self.pending_events.lock().unwrap().push(events::Event::PaymentFailed {
- payment_id,
- payment_hash: payment.get().payment_hash().expect("PendingOutboundPayments::RetriesExceeded always has a payment hash set"),
- });
- payment.remove();
- }
- }
+ if let Some(payment_failed_ev) = self.pending_outbound_payments.abandon_payment(payment_id) {
+ self.pending_events.lock().unwrap().push(payment_failed_ev);
}
}
/// would be able to guess -- otherwise, an intermediate node may claim the payment and it will
/// never reach the recipient.
///
- /// See [`send_payment`] documentation for more details on the return value of this function.
+ /// See [`send_payment`] documentation for more details on the return value of this function
+ /// and idempotency guarantees provided by the [`PaymentId`] key.
///
/// Similar to regular payments, you MUST NOT reuse a `payment_preimage` value. See
/// [`send_payment`] for more information about the risks of duplicate preimage usage.
/// Note that `route` must have exactly one path.
///
/// [`send_payment`]: Self::send_payment
- pub fn send_spontaneous_payment(&self, route: &Route, payment_preimage: Option<PaymentPreimage>) -> Result<(PaymentHash, PaymentId), PaymentSendFailure> {
- let preimage = match payment_preimage {
- Some(p) => p,
- None => PaymentPreimage(self.keys_manager.get_secure_random_bytes()),
- };
- let payment_hash = PaymentHash(Sha256::hash(&preimage.0).into_inner());
- match self.send_payment_internal(route, payment_hash, &None, Some(preimage), None, None) {
- Ok(payment_id) => Ok((payment_hash, payment_id)),
- Err(e) => Err(e)
- }
+ pub fn send_spontaneous_payment(&self, route: &Route, payment_preimage: Option<PaymentPreimage>, payment_id: PaymentId) -> Result<PaymentHash, PaymentSendFailure> {
+ let best_block_height = self.best_block.read().unwrap().height();
+ self.pending_outbound_payments.send_spontaneous_payment(route, payment_preimage, payment_id, &self.keys_manager, best_block_height,
+ |path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv|
+ self.send_payment_along_path(path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv))
+ }
+
+ /// Send a payment that is probing the given route for liquidity. We calculate the
+ /// [`PaymentHash`] of probes based on a static secret and a random [`PaymentId`], which allows
+ /// us to easily discern them from real payments.
+ pub fn send_probe(&self, hops: Vec<RouteHop>) -> Result<(PaymentHash, PaymentId), PaymentSendFailure> {
+ let best_block_height = self.best_block.read().unwrap().height();
+ self.pending_outbound_payments.send_probe(hops, self.probing_cookie_secret, &self.keys_manager, best_block_height,
+ |path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv|
+ self.send_payment_along_path(path, payment_params, payment_hash, payment_secret, total_value, cur_height, payment_id, keysend_preimage, session_priv))
+ }
+
+ /// Returns whether a payment with the given [`PaymentHash`] and [`PaymentId`] is, in fact, a
+ /// payment probe.
+ #[cfg(test)]
+ pub(crate) fn payment_is_probe(&self, payment_hash: &PaymentHash, payment_id: &PaymentId) -> bool {
+ outbound_payment::payment_is_probe(payment_hash, payment_id, self.probing_cookie_secret)
}
/// Handles the generation of a funding transaction, optionally (for tests) with a function
/// which checks the correctness of the funding transaction given the associated channel.
- fn funding_transaction_generated_intern<FundingOutput: Fn(&Channel<Signer>, &Transaction) -> Result<OutPoint, APIError>>(
- &self, temporary_channel_id: &[u8; 32], _counterparty_node_id: &PublicKey, funding_transaction: Transaction, find_funding_output: FundingOutput
+ fn funding_transaction_generated_intern<FundingOutput: Fn(&Channel<<K::Target as SignerProvider>::Signer>, &Transaction) -> Result<OutPoint, APIError>>(
+ &self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, funding_transaction: Transaction, find_funding_output: FundingOutput
) -> Result<(), APIError> {
let (chan, msg) = {
- let (res, chan) = match self.channel_state.lock().unwrap().by_id.remove(temporary_channel_id) {
- Some(mut chan) => {
- let funding_txo = find_funding_output(&chan, &funding_transaction)?;
-
- (chan.get_outbound_funding_created(funding_transaction, funding_txo, &self.logger)
- .map_err(|e| if let ChannelError::Close(msg) = e {
- MsgHandleErrInternal::from_finish_shutdown(msg, chan.channel_id(), chan.get_user_id(), chan.force_shutdown(true), None)
- } else { unreachable!(); })
- , chan)
- },
- None => { return Err(APIError::ChannelUnavailable { err: "No such channel".to_owned() }) },
+ let (res, chan) = {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.remove(temporary_channel_id) {
+ Some(mut chan) => {
+ let funding_txo = find_funding_output(&chan, &funding_transaction)?;
+
+ (chan.get_outbound_funding_created(funding_transaction, funding_txo, &self.logger)
+ .map_err(|e| if let ChannelError::Close(msg) = e {
+ MsgHandleErrInternal::from_finish_shutdown(msg, chan.channel_id(), chan.get_user_id(), chan.force_shutdown(true), None)
+ } else { unreachable!(); })
+ , chan)
+ },
+ None => { return Err(APIError::ChannelUnavailable { err: "No such channel".to_owned() }) },
+ }
+ } else {
+ return Err(APIError::APIMisuseError { err: format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id) })
+ }
};
match handle_error!(self, res, chan.get_counterparty_node_id()) {
Ok(funding_msg) => {
node_id: chan.get_counterparty_node_id(),
msg,
});
- match channel_state.by_id.entry(chan.channel_id()) {
- hash_map::Entry::Occupied(_) => {
- panic!("Generated duplicate funding txid?");
- },
- hash_map::Entry::Vacant(e) => {
- e.insert(chan);
+ mem::drop(channel_state);
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(chan.channel_id()) {
+ hash_map::Entry::Occupied(_) => {
+ panic!("Generated duplicate funding txid?");
+ },
+ hash_map::Entry::Vacant(e) => {
+ let mut id_to_peer = self.id_to_peer.lock().unwrap();
+ if id_to_peer.insert(chan.channel_id(), chan.get_counterparty_node_id()).is_some() {
+ panic!("id_to_peer map already contained funding txid, which shouldn't be possible");
+ }
+ e.insert(chan);
+ }
}
- }
+ } else { return Err(APIError::ChannelUnavailable { err: format!("Peer with counterparty_node_id {} disconnected and closed the channel", counterparty_node_id) }) }
Ok(())
}
/// Returns an [`APIError::APIMisuseError`] if the funding_transaction spent non-SegWit outputs
/// or if no output was found which matches the parameters in [`Event::FundingGenerationReady`].
///
+ /// Returns [`APIError::APIMisuseError`] if the funding transaction is not final for propagation
+ /// across the p2p network.
+ ///
/// Returns [`APIError::ChannelUnavailable`] if a funding transaction has already been provided
/// for the channel or if the channel has been closed as indicated by [`Event::ChannelClosed`].
///
/// not currently support replacing a funding transaction on an existing channel. Instead,
/// create a new channel with a conflicting funding transaction.
///
+ /// Note to keep the miner incentives aligned in moving the blockchain forward, we recommend
+ /// the wallet software generating the funding transaction to apply anti-fee sniping as
+ /// implemented by Bitcoin Core wallet. See <https://bitcoinops.org/en/topics/fee-sniping/>
+ /// for more details.
+ ///
/// [`Event::FundingGenerationReady`]: crate::util::events::Event::FundingGenerationReady
/// [`Event::ChannelClosed`]: crate::util::events::Event::ChannelClosed
pub fn funding_transaction_generated(&self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, funding_transaction: Transaction) -> Result<(), APIError> {
});
}
}
+ {
+ let height = self.best_block.read().unwrap().height();
+ // Transactions are evaluated as final by network mempools at the next block. However, the modules
+ // constituting our Lightning node might not have perfect sync about their blockchain views. Thus, if
+ // the wallet module is in advance on the LDK view, allow one more block of headroom.
+ if !funding_transaction.input.iter().all(|input| input.sequence == Sequence::MAX) && LockTime::from(funding_transaction.lock_time).is_block_height() && funding_transaction.lock_time.0 > height + 2 {
+ return Err(APIError::APIMisuseError {
+ err: "Funding transaction absolute timelock is non-final".to_owned()
+ });
+ }
+ }
self.funding_transaction_generated_intern(temporary_channel_id, counterparty_node_id, funding_transaction, |chan, tx| {
let mut output_index = None;
let expected_spk = chan.get_funding_redeemscript().to_v0_p2wsh();
})
}
- #[allow(dead_code)]
- // Messages of up to 64KB should never end up more than half full with addresses, as that would
- // be absurd. We ensure this by checking that at least 500 (our stated public contract on when
- // broadcast_node_announcement panics) of the maximum-length addresses would fit in a 64KB
- // message...
- const HALF_MESSAGE_IS_ADDRS: u32 = ::core::u16::MAX as u32 / (NetAddress::MAX_LEN as u32 + 1) / 2;
- #[deny(const_err)]
- #[allow(dead_code)]
- // ...by failing to compile if the number of addresses that would be half of a message is
- // smaller than 500:
- const STATIC_ASSERT: u32 = Self::HALF_MESSAGE_IS_ADDRS - 500;
-
- /// Regenerates channel_announcements and generates a signed node_announcement from the given
- /// arguments, providing them in corresponding events via
- /// [`get_and_clear_pending_msg_events`], if at least one public channel has been confirmed
- /// on-chain. This effectively re-broadcasts all channel announcements and sends our node
- /// announcement to ensure that the lightning P2P network is aware of the channels we have and
- /// our network addresses.
- ///
- /// `rgb` is a node "color" and `alias` is a printable human-readable string to describe this
- /// node to humans. They carry no in-protocol meaning.
- ///
- /// `addresses` represent the set (possibly empty) of socket addresses on which this node
- /// accepts incoming connections. These will be included in the node_announcement, publicly
- /// tying these addresses together and to this node. If you wish to preserve user privacy,
- /// addresses should likely contain only Tor Onion addresses.
- ///
- /// Panics if `addresses` is absurdly large (more than 500).
- ///
- /// [`get_and_clear_pending_msg_events`]: MessageSendEventsProvider::get_and_clear_pending_msg_events
- pub fn broadcast_node_announcement(&self, rgb: [u8; 3], alias: [u8; 32], mut addresses: Vec<NetAddress>) {
- let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
-
- if addresses.len() > 500 {
- panic!("More than half the message size was taken up by public addresses!");
+ /// Atomically updates the [`ChannelConfig`] for the given channels.
+ ///
+ /// Once the updates are applied, each eligible channel (advertised with a known short channel
+ /// ID and a change in [`forwarding_fee_proportional_millionths`], [`forwarding_fee_base_msat`],
+ /// or [`cltv_expiry_delta`]) has a [`BroadcastChannelUpdate`] event message generated
+ /// containing the new [`ChannelUpdate`] message which should be broadcast to the network.
+ ///
+ /// Returns [`ChannelUnavailable`] when a channel is not found or an incorrect
+ /// `counterparty_node_id` is provided.
+ ///
+ /// Returns [`APIMisuseError`] when a [`cltv_expiry_delta`] update is to be applied with a value
+ /// below [`MIN_CLTV_EXPIRY_DELTA`].
+ ///
+ /// If an error is returned, none of the updates should be considered applied.
+ ///
+ /// [`forwarding_fee_proportional_millionths`]: ChannelConfig::forwarding_fee_proportional_millionths
+ /// [`forwarding_fee_base_msat`]: ChannelConfig::forwarding_fee_base_msat
+ /// [`cltv_expiry_delta`]: ChannelConfig::cltv_expiry_delta
+ /// [`BroadcastChannelUpdate`]: events::MessageSendEvent::BroadcastChannelUpdate
+ /// [`ChannelUpdate`]: msgs::ChannelUpdate
+ /// [`ChannelUnavailable`]: APIError::ChannelUnavailable
+ /// [`APIMisuseError`]: APIError::APIMisuseError
+ pub fn update_channel_config(
+ &self, counterparty_node_id: &PublicKey, channel_ids: &[[u8; 32]], config: &ChannelConfig,
+ ) -> Result<(), APIError> {
+ if config.cltv_expiry_delta < MIN_CLTV_EXPIRY_DELTA {
+ return Err(APIError::APIMisuseError {
+ err: format!("The chosen CLTV expiry delta is below the minimum of {}", MIN_CLTV_EXPIRY_DELTA),
+ });
}
- // While all existing nodes handle unsorted addresses just fine, the spec requires that
- // addresses be sorted for future compatibility.
- addresses.sort_by_key(|addr| addr.get_id());
-
- let announcement = msgs::UnsignedNodeAnnouncement {
- features: NodeFeatures::known(),
- timestamp: self.last_node_announcement_serial.fetch_add(1, Ordering::AcqRel) as u32,
- node_id: self.get_our_node_id(),
- rgb, alias, addresses,
- excess_address_data: Vec::new(),
- excess_data: Vec::new(),
- };
- let msghash = hash_to_message!(&Sha256dHash::hash(&announcement.encode()[..])[..]);
- let node_announce_sig = sign(&self.secp_ctx, &msghash, &self.our_network_key);
+ let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(
+ &self.total_consistency_lock, &self.persistence_notifier,
+ );
+ {
+ let mut channel_state_lock = self.channel_state.lock().unwrap();
+ let channel_state = &mut *channel_state_lock;
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ for channel_id in channel_ids {
+ if !peer_state.channel_by_id.contains_key(channel_id) {
+ return Err(APIError::ChannelUnavailable {
+ err: format!("Channel with ID {} was not found", log_bytes!(*channel_id)),
+ });
+ }
+ }
+ for channel_id in channel_ids {
+ let channel = peer_state.channel_by_id.get_mut(channel_id).unwrap();
+ if !channel.update_config(config) {
+ continue;
+ }
+ if let Ok(msg) = self.get_channel_update_for_broadcast(channel) {
+ channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate { msg });
+ } else if let Ok(msg) = self.get_channel_update_for_unicast(channel) {
+ channel_state.pending_msg_events.push(events::MessageSendEvent::SendChannelUpdate {
+ node_id: channel.get_counterparty_node_id(),
+ msg,
+ });
+ }
+ }
+ } else {
+ return Err(APIError::APIMisuseError{ err: format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id) });
+ }
+ }
+ Ok(())
+ }
- let mut channel_state_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_state_lock;
+ /// Attempts to forward an intercepted HTLC over the provided channel id and with the provided
+ /// amount to forward. Should only be called in response to an [`HTLCIntercepted`] event.
+ ///
+ /// Intercepted HTLCs can be useful for Lightning Service Providers (LSPs) to open a just-in-time
+ /// channel to a receiving node if the node lacks sufficient inbound liquidity.
+ ///
+ /// To make use of intercepted HTLCs, set [`UserConfig::accept_intercept_htlcs`] and use
+ /// [`ChannelManager::get_intercept_scid`] to generate short channel id(s) to put in the
+ /// receiver's invoice route hints. These route hints will signal to LDK to generate an
+ /// [`HTLCIntercepted`] event when it receives the forwarded HTLC, and this method or
+ /// [`ChannelManager::fail_intercepted_htlc`] MUST be called in response to the event.
+ ///
+ /// Note that LDK does not enforce fee requirements in `amt_to_forward_msat`, and will not stop
+ /// you from forwarding more than you received.
+ ///
+ /// Errors if the event was not handled in time, in which case the HTLC was automatically failed
+ /// backwards.
+ ///
+ /// [`UserConfig::accept_intercept_htlcs`]: crate::util::config::UserConfig::accept_intercept_htlcs
+ /// [`HTLCIntercepted`]: events::Event::HTLCIntercepted
+ // TODO: when we move to deciding the best outbound channel at forward time, only take
+ // `next_node_id` and not `next_hop_channel_id`
+ pub fn forward_intercepted_htlc(&self, intercept_id: InterceptId, next_hop_channel_id: &[u8; 32], next_node_id: PublicKey, amt_to_forward_msat: u64) -> Result<(), APIError> {
+ let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
- let mut announced_chans = false;
- for (_, chan) in channel_state.by_id.iter() {
- if let Some(msg) = chan.get_signed_channel_announcement(self.get_our_node_id(), self.genesis_hash.clone(), self.best_block.read().unwrap().height()) {
- channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelAnnouncement {
- msg,
- update_msg: match self.get_channel_update_for_broadcast(chan) {
- Ok(msg) => msg,
- Err(_) => continue,
+ let next_hop_scid = {
+ let peer_state_lock = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = peer_state_lock.get(&next_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.get(next_hop_channel_id) {
+ Some(chan) => {
+ if !chan.is_usable() {
+ return Err(APIError::ChannelUnavailable {
+ err: format!("Channel with id {} not fully established", log_bytes!(*next_hop_channel_id))
+ })
+ }
+ chan.get_short_channel_id().unwrap_or(chan.outbound_scid_alias())
},
- });
- announced_chans = true;
+ None => return Err(APIError::ChannelUnavailable {
+ err: format!("Channel with id {} not found", log_bytes!(*next_hop_channel_id))
+ })
+ }
} else {
- // If the channel is not public or has not yet reached channel_ready, check the
- // next channel. If we don't yet have any public channels, we'll skip the broadcast
- // below as peers may not accept it without channels on chain first.
+ return Err(APIError::APIMisuseError{ err: format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", next_node_id) });
}
- }
+ };
- if announced_chans {
- channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastNodeAnnouncement {
- msg: msgs::NodeAnnouncement {
- signature: node_announce_sig,
- contents: announcement
- },
+ let payment = self.pending_intercepted_htlcs.lock().unwrap().remove(&intercept_id)
+ .ok_or_else(|| APIError::APIMisuseError {
+ err: format!("Payment with intercept id {} not found", log_bytes!(intercept_id.0))
+ })?;
+
+ let routing = match payment.forward_info.routing {
+ PendingHTLCRouting::Forward { onion_packet, .. } => {
+ PendingHTLCRouting::Forward { onion_packet, short_channel_id: next_hop_scid }
+ },
+ _ => unreachable!() // Only `PendingHTLCRouting::Forward`s are intercepted
+ };
+ let pending_htlc_info = PendingHTLCInfo {
+ outgoing_amt_msat: amt_to_forward_msat, routing, ..payment.forward_info
+ };
+
+ let mut per_source_pending_forward = [(
+ payment.prev_short_channel_id,
+ payment.prev_funding_outpoint,
+ payment.prev_user_channel_id,
+ vec![(pending_htlc_info, payment.prev_htlc_id)]
+ )];
+ self.forward_htlcs(&mut per_source_pending_forward);
+ Ok(())
+ }
+
+ /// Fails the intercepted HTLC indicated by intercept_id. Should only be called in response to
+ /// an [`HTLCIntercepted`] event. See [`ChannelManager::forward_intercepted_htlc`].
+ ///
+ /// Errors if the event was not handled in time, in which case the HTLC was automatically failed
+ /// backwards.
+ ///
+ /// [`HTLCIntercepted`]: events::Event::HTLCIntercepted
+ pub fn fail_intercepted_htlc(&self, intercept_id: InterceptId) -> Result<(), APIError> {
+ let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
+
+ let payment = self.pending_intercepted_htlcs.lock().unwrap().remove(&intercept_id)
+ .ok_or_else(|| APIError::APIMisuseError {
+ err: format!("Payment with intercept id {} not found", log_bytes!(intercept_id.0))
+ })?;
+
+ if let PendingHTLCRouting::Forward { short_channel_id, .. } = payment.forward_info.routing {
+ let htlc_source = HTLCSource::PreviousHopData(HTLCPreviousHopData {
+ short_channel_id: payment.prev_short_channel_id,
+ outpoint: payment.prev_funding_outpoint,
+ htlc_id: payment.prev_htlc_id,
+ incoming_packet_shared_secret: payment.forward_info.incoming_shared_secret,
+ phantom_shared_secret: None,
});
- }
+
+ let failure_reason = HTLCFailReason::from_failure_code(0x4000 | 10);
+ let destination = HTLCDestination::UnknownNextHop { requested_forward_scid: short_channel_id };
+ self.fail_htlc_backwards_internal(&htlc_source, &payment.forward_info.payment_hash, &failure_reason, destination);
+ } else { unreachable!() } // Only `PendingHTLCRouting::Forward`s are intercepted
+
+ Ok(())
}
/// Processes HTLCs which are pending waiting on random forward delay.
let mut new_events = Vec::new();
let mut failed_forwards = Vec::new();
- let mut phantom_receives: Vec<(u64, OutPoint, Vec<(PendingHTLCInfo, u64)>)> = Vec::new();
- let mut handle_errors = Vec::new();
+ let mut phantom_receives: Vec<(u64, OutPoint, u128, Vec<(PendingHTLCInfo, u64)>)> = Vec::new();
{
- let mut channel_state_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_state_lock;
+ let mut forward_htlcs = HashMap::new();
+ mem::swap(&mut forward_htlcs, &mut self.forward_htlcs.lock().unwrap());
- for (short_chan_id, mut pending_forwards) in channel_state.forward_htlcs.drain() {
+ for (short_chan_id, mut pending_forwards) in forward_htlcs {
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 => {
+ macro_rules! forwarding_channel_not_found {
+ () => {
for forward_info in pending_forwards.drain(..) {
match forward_info {
- HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info: PendingHTLCInfo {
- routing, incoming_shared_secret, payment_hash, amt_to_forward, outgoing_cltv_value },
- prev_funding_outpoint } => {
- macro_rules! fail_forward {
- ($msg: expr, $err_code: expr, $err_data: expr, $phantom_ss: expr) => {
- {
- log_info!(self.logger, "Failed to accept/forward incoming HTLC: {}", $msg);
- let htlc_source = HTLCSource::PreviousHopData(HTLCPreviousHopData {
- short_channel_id: prev_short_channel_id,
- outpoint: prev_funding_outpoint,
- htlc_id: prev_htlc_id,
- incoming_packet_shared_secret: incoming_shared_secret,
- phantom_shared_secret: $phantom_ss,
- });
- failed_forwards.push((htlc_source, payment_hash,
- HTLCFailReason::Reason { failure_code: $err_code, data: $err_data }
- ));
- continue;
- }
+ HTLCForwardInfo::AddHTLC(PendingAddHTLCInfo {
+ prev_short_channel_id, prev_htlc_id, prev_funding_outpoint, prev_user_channel_id,
+ forward_info: PendingHTLCInfo {
+ routing, incoming_shared_secret, payment_hash, outgoing_amt_msat,
+ outgoing_cltv_value, incoming_amt_msat: _
+ }
+ }) => {
+ macro_rules! failure_handler {
+ ($msg: expr, $err_code: expr, $err_data: expr, $phantom_ss: expr, $next_hop_unknown: expr) => {
+ log_info!(self.logger, "Failed to accept/forward incoming HTLC: {}", $msg);
+
+ let htlc_source = HTLCSource::PreviousHopData(HTLCPreviousHopData {
+ short_channel_id: prev_short_channel_id,
+ outpoint: prev_funding_outpoint,
+ htlc_id: prev_htlc_id,
+ incoming_packet_shared_secret: incoming_shared_secret,
+ phantom_shared_secret: $phantom_ss,
+ });
+
+ let reason = if $next_hop_unknown {
+ HTLCDestination::UnknownNextHop { requested_forward_scid: short_chan_id }
+ } else {
+ HTLCDestination::FailedPayment{ payment_hash }
+ };
+
+ failed_forwards.push((htlc_source, payment_hash,
+ HTLCFailReason::reason($err_code, $err_data),
+ reason
+ ));
+ continue;
+ }
+ }
+ macro_rules! fail_forward {
+ ($msg: expr, $err_code: expr, $err_data: expr, $phantom_ss: expr) => {
+ {
+ failure_handler!($msg, $err_code, $err_data, $phantom_ss, true);
}
}
- if let PendingHTLCRouting::Forward { onion_packet, .. } = routing {
- let phantom_secret_res = self.keys_manager.get_node_secret(Recipient::PhantomNode);
- if phantom_secret_res.is_ok() && fake_scid::is_valid_phantom(&self.fake_scid_rand_bytes, short_chan_id) {
- let phantom_shared_secret = SharedSecret::new(&onion_packet.public_key.unwrap(), &phantom_secret_res.unwrap()).secret_bytes();
- let next_hop = match onion_utils::decode_next_hop(phantom_shared_secret, &onion_packet.hop_data, onion_packet.hmac, payment_hash) {
- Ok(res) => res,
- Err(onion_utils::OnionDecodeErr::Malformed { err_msg, err_code }) => {
- let sha256_of_onion = Sha256::hash(&onion_packet.hop_data).into_inner();
- // In this scenario, the phantom would have sent us an
- // `update_fail_malformed_htlc`, meaning here we encrypt the error as
- // if it came from us (the second-to-last hop) but contains the sha256
- // of the onion.
- fail_forward!(err_msg, err_code, sha256_of_onion.to_vec(), None);
- },
- Err(onion_utils::OnionDecodeErr::Relay { err_msg, err_code }) => {
- fail_forward!(err_msg, err_code, Vec::new(), Some(phantom_shared_secret));
- },
- };
- match next_hop {
- onion_utils::Hop::Receive(hop_data) => {
- match self.construct_recv_pending_htlc_info(hop_data, incoming_shared_secret, payment_hash, amt_to_forward, outgoing_cltv_value, Some(phantom_shared_secret)) {
- Ok(info) => phantom_receives.push((prev_short_channel_id, prev_funding_outpoint, vec![(info, prev_htlc_id)])),
- Err(ReceiveError { err_code, err_data, msg }) => fail_forward!(msg, err_code, err_data, Some(phantom_shared_secret))
- }
- },
- _ => panic!(),
- }
- } else {
- fail_forward!(format!("Unknown short channel id {} for forward HTLC", short_chan_id), 0x4000 | 10, Vec::new(), None);
+ }
+ macro_rules! failed_payment {
+ ($msg: expr, $err_code: expr, $err_data: expr, $phantom_ss: expr) => {
+ {
+ failure_handler!($msg, $err_code, $err_data, $phantom_ss, false);
+ }
+ }
+ }
+ if let PendingHTLCRouting::Forward { onion_packet, .. } = routing {
+ let phantom_secret_res = self.keys_manager.get_node_secret(Recipient::PhantomNode);
+ if phantom_secret_res.is_ok() && fake_scid::is_valid_phantom(&self.fake_scid_rand_bytes, short_chan_id, &self.genesis_hash) {
+ let phantom_shared_secret = SharedSecret::new(&onion_packet.public_key.unwrap(), &phantom_secret_res.unwrap()).secret_bytes();
+ let next_hop = match onion_utils::decode_next_payment_hop(phantom_shared_secret, &onion_packet.hop_data, onion_packet.hmac, payment_hash) {
+ Ok(res) => res,
+ Err(onion_utils::OnionDecodeErr::Malformed { err_msg, err_code }) => {
+ let sha256_of_onion = Sha256::hash(&onion_packet.hop_data).into_inner();
+ // In this scenario, the phantom would have sent us an
+ // `update_fail_malformed_htlc`, meaning here we encrypt the error as
+ // if it came from us (the second-to-last hop) but contains the sha256
+ // of the onion.
+ failed_payment!(err_msg, err_code, sha256_of_onion.to_vec(), None);
+ },
+ Err(onion_utils::OnionDecodeErr::Relay { err_msg, err_code }) => {
+ failed_payment!(err_msg, err_code, Vec::new(), Some(phantom_shared_secret));
+ },
+ };
+ match next_hop {
+ onion_utils::Hop::Receive(hop_data) => {
+ match self.construct_recv_pending_htlc_info(hop_data, incoming_shared_secret, payment_hash, outgoing_amt_msat, outgoing_cltv_value, Some(phantom_shared_secret)) {
+ Ok(info) => phantom_receives.push((prev_short_channel_id, prev_funding_outpoint, prev_user_channel_id, vec![(info, prev_htlc_id)])),
+ Err(ReceiveError { err_code, err_data, msg }) => failed_payment!(msg, err_code, err_data, Some(phantom_shared_secret))
+ }
+ },
+ _ => panic!(),
}
} else {
fail_forward!(format!("Unknown short channel id {} for forward HTLC", short_chan_id), 0x4000 | 10, Vec::new(), None);
}
- },
+ } else {
+ fail_forward!(format!("Unknown short channel id {} for forward HTLC", short_chan_id), 0x4000 | 10, Vec::new(), None);
+ }
+ },
HTLCForwardInfo::FailHTLC { .. } => {
// Channel went away before we could fail it. This implies
// the channel is now on chain and our counterparty is
}
}
}
+ }
+ }
+ let (counterparty_node_id, forward_chan_id) = match self.short_to_chan_info.read().unwrap().get(&short_chan_id) {
+ Some((cp_id, chan_id)) => (cp_id.clone(), chan_id.clone()),
+ None => {
+ forwarding_channel_not_found!();
continue;
}
};
- if let hash_map::Entry::Occupied(mut chan) = channel_state.by_id.entry(forward_chan_id) {
- let mut add_htlc_msgs = Vec::new();
- 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: PendingHTLCInfo {
- routing: PendingHTLCRouting::Forward {
- onion_packet, ..
- }, incoming_shared_secret, payment_hash, amt_to_forward, outgoing_cltv_value },
- prev_funding_outpoint } => {
- log_trace!(self.logger, "Adding HTLC from short id {} with payment_hash {} to channel with short id {} after delay", prev_short_channel_id, log_bytes!(payment_hash.0), short_chan_id);
- let htlc_source = HTLCSource::PreviousHopData(HTLCPreviousHopData {
- short_channel_id: prev_short_channel_id,
- outpoint: prev_funding_outpoint,
- htlc_id: prev_htlc_id,
- incoming_packet_shared_secret: incoming_shared_secret,
- // Phantom payments are only PendingHTLCRouting::Receive.
- phantom_shared_secret: None,
- });
- match chan.get_mut().send_htlc(amt_to_forward, payment_hash, outgoing_cltv_value, htlc_source.clone(), onion_packet, &self.logger) {
- Err(e) => {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let None = per_peer_state.get(&counterparty_node_id) {
+ forwarding_channel_not_found!();
+ continue;
+ }
+ let peer_state_mutex = per_peer_state.get(&counterparty_node_id).unwrap();
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(forward_chan_id) {
+ hash_map::Entry::Vacant(_) => {
+ forwarding_channel_not_found!();
+ continue;
+ },
+ hash_map::Entry::Occupied(mut chan) => {
+ for forward_info in pending_forwards.drain(..) {
+ match forward_info {
+ HTLCForwardInfo::AddHTLC(PendingAddHTLCInfo {
+ prev_short_channel_id, prev_htlc_id, prev_funding_outpoint, prev_user_channel_id: _,
+ forward_info: PendingHTLCInfo {
+ incoming_shared_secret, payment_hash, outgoing_amt_msat, outgoing_cltv_value,
+ routing: PendingHTLCRouting::Forward { onion_packet, .. }, incoming_amt_msat: _,
+ },
+ }) => {
+ log_trace!(self.logger, "Adding HTLC from short id {} with payment_hash {} to channel with short id {} after delay", prev_short_channel_id, log_bytes!(payment_hash.0), short_chan_id);
+ let htlc_source = HTLCSource::PreviousHopData(HTLCPreviousHopData {
+ short_channel_id: prev_short_channel_id,
+ outpoint: prev_funding_outpoint,
+ htlc_id: prev_htlc_id,
+ incoming_packet_shared_secret: incoming_shared_secret,
+ // Phantom payments are only PendingHTLCRouting::Receive.
+ phantom_shared_secret: None,
+ });
+ if let Err(e) = chan.get_mut().queue_add_htlc(outgoing_amt_msat,
+ payment_hash, outgoing_cltv_value, htlc_source.clone(),
+ onion_packet, &self.logger)
+ {
if let ChannelError::Ignore(msg) = e {
log_trace!(self.logger, "Failed to forward HTLC with payment_hash {}: {}", log_bytes!(payment_hash.0), msg);
} else {
}
let (failure_code, data) = self.get_htlc_temp_fail_err_and_data(0x1000|7, short_chan_id, chan.get());
failed_forwards.push((htlc_source, payment_hash,
- HTLCFailReason::Reason { failure_code, data }
+ HTLCFailReason::reason(failure_code, data),
+ HTLCDestination::NextHopChannel { node_id: Some(chan.get().get_counterparty_node_id()), channel_id: forward_chan_id }
));
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 :/.
- }
- }
}
- }
- },
- HTLCForwardInfo::AddHTLC { .. } => {
- panic!("short_channel_id != 0 should imply any pending_forward entries are of type Forward");
- },
- HTLCForwardInfo::FailHTLC { htlc_id, err_packet } => {
- log_trace!(self.logger, "Failing HTLC back to channel with short id {} (backward HTLC ID {}) after delay", short_chan_id, htlc_id);
- match chan.get_mut().get_update_fail_htlc(htlc_id, err_packet, &self.logger) {
- Err(e) => {
+ },
+ HTLCForwardInfo::AddHTLC { .. } => {
+ panic!("short_channel_id != 0 should imply any pending_forward entries are of type Forward");
+ },
+ HTLCForwardInfo::FailHTLC { htlc_id, err_packet } => {
+ log_trace!(self.logger, "Failing HTLC back to channel with short id {} (backward HTLC ID {}) after delay", short_chan_id, htlc_id);
+ if let Err(e) = chan.get_mut().queue_fail_htlc(
+ htlc_id, err_packet, &self.logger
+ ) {
if let ChannelError::Ignore(msg) = e {
log_trace!(self.logger, "Failed to fail HTLC with ID {} backwards to short_id {}: {}", htlc_id, short_chan_id, msg);
} else {
- panic!("Stated return value requirements in get_update_fail_htlc() were not met");
+ panic!("Stated return value requirements in queue_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 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, it's not our problem.
}
- }
- },
+ },
+ }
}
}
-
- if !add_htlc_msgs.is_empty() || !fail_htlc_msgs.is_empty() {
- let (commitment_msg, monitor_update) = match chan.get_mut().send_commitment(&self.logger) {
- Ok(res) => res,
- Err(e) => {
- // We surely failed send_commitment due to bad keys, in that case
- // close channel and then send error message to peer.
- let counterparty_node_id = chan.get().get_counterparty_node_id();
- let err: Result<(), _> = match e {
- ChannelError::Ignore(_) | ChannelError::Warn(_) => {
- panic!("Stated return value requirements in send_commitment() were not met");
- }
- ChannelError::Close(msg) => {
- log_trace!(self.logger, "Closing channel {} due to Close-required error: {}", log_bytes!(chan.key()[..]), msg);
- let mut channel = remove_channel!(self, channel_state, chan);
- // ChannelClosed event is generated by handle_error for us.
- Err(MsgHandleErrInternal::from_finish_shutdown(msg, channel.channel_id(), channel.get_user_id(), channel.force_shutdown(true), self.get_channel_update_for_broadcast(&channel).ok()))
- },
- ChannelError::CloseDelayBroadcast(_) => { panic!("Wait is only generated on receipt of channel_reestablish, which is handled by try_chan_entry, we don't bother to support it here"); }
- };
- handle_errors.push((counterparty_node_id, err));
- continue;
- }
- };
- if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
- handle_errors.push((chan.get().get_counterparty_node_id(), handle_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::CommitmentFirst, false, true)));
- continue;
- }
- log_debug!(self.logger, "Forwarding HTLCs resulted in a commitment update with {} HTLCs added and {} HTLCs failed for channel {}",
- add_htlc_msgs.len(), fail_htlc_msgs.len(), log_bytes!(chan.get().channel_id()));
- channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: chan.get().get_counterparty_node_id(),
- updates: msgs::CommitmentUpdate {
- update_add_htlcs: add_htlc_msgs,
- update_fulfill_htlcs: Vec::new(),
- update_fail_htlcs: fail_htlc_msgs,
- update_fail_malformed_htlcs: Vec::new(),
- update_fee: None,
- commitment_signed: commitment_msg,
- },
- });
- }
- } else {
- unreachable!();
}
} else {
for forward_info in pending_forwards.drain(..) {
match forward_info {
- HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_htlc_id, forward_info: PendingHTLCInfo {
- routing, incoming_shared_secret, payment_hash, amt_to_forward, .. },
- prev_funding_outpoint } => {
+ HTLCForwardInfo::AddHTLC(PendingAddHTLCInfo {
+ prev_short_channel_id, prev_htlc_id, prev_funding_outpoint, prev_user_channel_id,
+ forward_info: PendingHTLCInfo {
+ routing, incoming_shared_secret, payment_hash, outgoing_amt_msat, ..
+ }
+ }) => {
let (cltv_expiry, onion_payload, payment_data, phantom_shared_secret) = match routing {
PendingHTLCRouting::Receive { payment_data, incoming_cltv_expiry, phantom_shared_secret } => {
let _legacy_hop_data = Some(payment_data.clone());
incoming_packet_shared_secret: incoming_shared_secret,
phantom_shared_secret,
},
- value: amt_to_forward,
+ value: outgoing_amt_msat,
timer_ticks: 0,
- total_msat: if let Some(data) = &payment_data { data.total_msat } else { amt_to_forward },
+ total_msat: if let Some(data) = &payment_data { data.total_msat } else { outgoing_amt_msat },
cltv_expiry,
onion_payload,
};
macro_rules! fail_htlc {
- ($htlc: expr) => {
- let mut htlc_msat_height_data = byte_utils::be64_to_array($htlc.value).to_vec();
+ ($htlc: expr, $payment_hash: expr) => {
+ let mut htlc_msat_height_data = $htlc.value.to_be_bytes().to_vec();
htlc_msat_height_data.extend_from_slice(
- &byte_utils::be32_to_array(self.best_block.read().unwrap().height()),
+ &self.best_block.read().unwrap().height().to_be_bytes(),
);
failed_forwards.push((HTLCSource::PreviousHopData(HTLCPreviousHopData {
short_channel_id: $htlc.prev_hop.short_channel_id,
incoming_packet_shared_secret: $htlc.prev_hop.incoming_packet_shared_secret,
phantom_shared_secret,
}), payment_hash,
- HTLCFailReason::Reason { failure_code: 0x4000 | 15, data: htlc_msat_height_data }
+ HTLCFailReason::reason(0x4000 | 15, htlc_msat_height_data),
+ HTLCDestination::FailedPayment { payment_hash: $payment_hash },
));
}
}
+ let phantom_shared_secret = claimable_htlc.prev_hop.phantom_shared_secret;
+ let mut receiver_node_id = self.our_network_pubkey;
+ if phantom_shared_secret.is_some() {
+ receiver_node_id = self.keys_manager.get_node_id(Recipient::PhantomNode)
+ .expect("Failed to get node_id for phantom node recipient");
+ }
macro_rules! check_total_value {
($payment_data: expr, $payment_preimage: expr) => {{
- let mut payment_received_generated = false;
+ let mut payment_claimable_generated = false;
let purpose = || {
events::PaymentPurpose::InvoicePayment {
payment_preimage: $payment_preimage,
payment_secret: $payment_data.payment_secret,
}
};
- let (_, htlcs) = channel_state.claimable_htlcs.entry(payment_hash)
+ let mut claimable_payments = self.claimable_payments.lock().unwrap();
+ if claimable_payments.pending_claiming_payments.contains_key(&payment_hash) {
+ fail_htlc!(claimable_htlc, payment_hash);
+ continue
+ }
+ let (_, htlcs) = claimable_payments.claimable_htlcs.entry(payment_hash)
.or_insert_with(|| (purpose(), Vec::new()));
if htlcs.len() == 1 {
if let OnionPayload::Spontaneous(_) = htlcs[0].onion_payload {
log_trace!(self.logger, "Failing new HTLC with payment_hash {} as we already had an existing keysend HTLC with the same payment hash", log_bytes!(payment_hash.0));
- fail_htlc!(claimable_htlc);
+ fail_htlc!(claimable_htlc, payment_hash);
continue
}
}
if total_value >= msgs::MAX_VALUE_MSAT || total_value > $payment_data.total_msat {
log_trace!(self.logger, "Failing HTLCs with payment_hash {} as the total value {} ran over expected value {} (or HTLCs were inconsistent)",
log_bytes!(payment_hash.0), total_value, $payment_data.total_msat);
- fail_htlc!(claimable_htlc);
+ fail_htlc!(claimable_htlc, payment_hash);
} else if total_value == $payment_data.total_msat {
+ let prev_channel_id = prev_funding_outpoint.to_channel_id();
htlcs.push(claimable_htlc);
- new_events.push(events::Event::PaymentReceived {
+ new_events.push(events::Event::PaymentClaimable {
+ receiver_node_id: Some(receiver_node_id),
payment_hash,
purpose: purpose(),
amount_msat: total_value,
+ via_channel_id: Some(prev_channel_id),
+ via_user_channel_id: Some(prev_user_channel_id),
});
- payment_received_generated = true;
+ payment_claimable_generated = true;
} else {
// Nothing to do - we haven't reached the total
// payment value yet, wait until we receive more
// MPP parts.
htlcs.push(claimable_htlc);
}
- payment_received_generated
+ payment_claimable_generated
}}
}
let payment_preimage = match inbound_payment::verify(payment_hash, &payment_data, self.highest_seen_timestamp.load(Ordering::Acquire) as u64, &self.inbound_payment_key, &self.logger) {
Ok(payment_preimage) => payment_preimage,
Err(()) => {
- fail_htlc!(claimable_htlc);
+ fail_htlc!(claimable_htlc, payment_hash);
continue
}
};
check_total_value!(payment_data, payment_preimage);
},
OnionPayload::Spontaneous(preimage) => {
- match channel_state.claimable_htlcs.entry(payment_hash) {
+ let mut claimable_payments = self.claimable_payments.lock().unwrap();
+ if claimable_payments.pending_claiming_payments.contains_key(&payment_hash) {
+ fail_htlc!(claimable_htlc, payment_hash);
+ continue
+ }
+ match claimable_payments.claimable_htlcs.entry(payment_hash) {
hash_map::Entry::Vacant(e) => {
let purpose = events::PaymentPurpose::SpontaneousPayment(preimage);
e.insert((purpose.clone(), vec![claimable_htlc]));
- new_events.push(events::Event::PaymentReceived {
+ let prev_channel_id = prev_funding_outpoint.to_channel_id();
+ new_events.push(events::Event::PaymentClaimable {
+ receiver_node_id: Some(receiver_node_id),
payment_hash,
- amount_msat: amt_to_forward,
+ amount_msat: outgoing_amt_msat,
purpose,
+ via_channel_id: Some(prev_channel_id),
+ via_user_channel_id: Some(prev_user_channel_id),
});
},
hash_map::Entry::Occupied(_) => {
log_trace!(self.logger, "Failing new keysend HTLC with payment_hash {} for a duplicative payment hash", log_bytes!(payment_hash.0));
- fail_htlc!(claimable_htlc);
+ fail_htlc!(claimable_htlc, payment_hash);
}
}
}
hash_map::Entry::Occupied(inbound_payment) => {
if payment_data.is_none() {
log_trace!(self.logger, "Failing new keysend HTLC with payment_hash {} because we already have an inbound payment with the same payment hash", log_bytes!(payment_hash.0));
- fail_htlc!(claimable_htlc);
+ fail_htlc!(claimable_htlc, payment_hash);
continue
};
let payment_data = payment_data.unwrap();
if inbound_payment.get().payment_secret != payment_data.payment_secret {
log_trace!(self.logger, "Failing new HTLC with payment_hash {} as it didn't match our expected payment secret.", log_bytes!(payment_hash.0));
- fail_htlc!(claimable_htlc);
+ fail_htlc!(claimable_htlc, payment_hash);
} else if inbound_payment.get().min_value_msat.is_some() && payment_data.total_msat < inbound_payment.get().min_value_msat.unwrap() {
log_trace!(self.logger, "Failing new HTLC with payment_hash {} as it didn't match our minimum value (had {}, needed {}).",
log_bytes!(payment_hash.0), payment_data.total_msat, inbound_payment.get().min_value_msat.unwrap());
- fail_htlc!(claimable_htlc);
+ fail_htlc!(claimable_htlc, payment_hash);
} else {
- let payment_received_generated = check_total_value!(payment_data, inbound_payment.get().payment_preimage);
- if payment_received_generated {
+ let payment_claimable_generated = check_total_value!(payment_data, inbound_payment.get().payment_preimage);
+ if payment_claimable_generated {
inbound_payment.remove_entry();
}
}
}
}
- for (htlc_source, payment_hash, failure_reason) in failed_forwards.drain(..) {
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source, &payment_hash, failure_reason);
+ for (htlc_source, payment_hash, failure_reason, destination) in failed_forwards.drain(..) {
+ self.fail_htlc_backwards_internal(&htlc_source, &payment_hash, &failure_reason, destination);
}
self.forward_htlcs(&mut phantom_receives);
- for (counterparty_node_id, err) in handle_errors.drain(..) {
- let _ = handle_error!(self, err, counterparty_node_id);
- }
+ // Freeing the holding cell here is relatively redundant - in practice we'll do it when we
+ // next get a `get_and_clear_pending_msg_events` call, but some tests rely on it, and it's
+ // nice to do the work now if we can rather than while we're trying to get messages in the
+ // network stack.
+ self.check_free_holding_cells();
if new_events.is_empty() { return }
let mut events = self.pending_events.lock().unwrap();
self.process_background_events();
}
- fn update_channel_fee(&self, short_to_id: &mut HashMap<u64, [u8; 32]>, pending_msg_events: &mut Vec<events::MessageSendEvent>, chan_id: &[u8; 32], chan: &mut Channel<Signer>, new_feerate: u32) -> (bool, NotifyOption, Result<(), MsgHandleErrInternal>) {
- if !chan.is_outbound() { return (true, NotifyOption::SkipPersist, Ok(())); }
+ fn update_channel_fee(&self, chan_id: &[u8; 32], chan: &mut Channel<<K::Target as SignerProvider>::Signer>, new_feerate: u32) -> NotifyOption {
+ if !chan.is_outbound() { return NotifyOption::SkipPersist; }
// If the feerate has decreased by less than half, don't bother
if new_feerate <= chan.get_feerate() && new_feerate * 2 > chan.get_feerate() {
log_trace!(self.logger, "Channel {} does not qualify for a feerate change from {} to {}.",
log_bytes!(chan_id[..]), chan.get_feerate(), new_feerate);
- return (true, NotifyOption::SkipPersist, Ok(()));
+ return NotifyOption::SkipPersist;
}
if !chan.is_live() {
log_trace!(self.logger, "Channel {} does not qualify for a feerate change from {} to {} as it cannot currently be updated (probably the peer is disconnected).",
log_bytes!(chan_id[..]), chan.get_feerate(), new_feerate);
- return (true, NotifyOption::SkipPersist, Ok(()));
+ return NotifyOption::SkipPersist;
}
log_trace!(self.logger, "Channel {} qualifies for a feerate change from {} to {}.",
log_bytes!(chan_id[..]), chan.get_feerate(), new_feerate);
- let mut retain_channel = true;
- let res = match chan.send_update_fee_and_commit(new_feerate, &self.logger) {
- Ok(res) => Ok(res),
- Err(e) => {
- let (drop, res) = convert_chan_err!(self, e, short_to_id, chan, chan_id);
- if drop { retain_channel = false; }
- Err(res)
- }
- };
- let ret_err = match res {
- Ok(Some((update_fee, commitment_signed, monitor_update))) => {
- if let Err(e) = self.chain_monitor.update_channel(chan.get_funding_txo().unwrap(), monitor_update) {
- let (res, drop) = handle_monitor_err!(self, e, short_to_id, chan, RAACommitmentOrder::CommitmentFirst, chan_id, COMMITMENT_UPDATE_ONLY);
- if drop { retain_channel = false; }
- res
- } else {
- pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: chan.get_counterparty_node_id(),
- updates: msgs::CommitmentUpdate {
- update_add_htlcs: Vec::new(),
- update_fulfill_htlcs: Vec::new(),
- update_fail_htlcs: Vec::new(),
- update_fail_malformed_htlcs: Vec::new(),
- update_fee: Some(update_fee),
- commitment_signed,
- },
- });
- Ok(())
- }
- },
- Ok(None) => Ok(()),
- Err(e) => Err(e),
- };
- (retain_channel, NotifyOption::DoPersist, ret_err)
+ chan.queue_update_fee(new_feerate, &self.logger);
+ NotifyOption::DoPersist
}
#[cfg(fuzzing)]
PersistenceNotifierGuard::optionally_notify(&self.total_consistency_lock, &self.persistence_notifier, || {
let mut should_persist = NotifyOption::SkipPersist;
- let new_feerate = self.fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
+ let new_feerate = self.fee_estimator.bounded_sat_per_1000_weight(ConfirmationTarget::Normal);
- let mut handle_errors = Vec::new();
- {
- let mut channel_state_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_state_lock;
- let pending_msg_events = &mut channel_state.pending_msg_events;
- let short_to_id = &mut channel_state.short_to_id;
- channel_state.by_id.retain(|chan_id, chan| {
- let (retain_channel, chan_needs_persist, err) = self.update_channel_fee(short_to_id, pending_msg_events, chan_id, chan, new_feerate);
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ for (_cp_id, peer_state_mutex) in per_peer_state.iter() {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ for (chan_id, chan) in peer_state.channel_by_id.iter_mut() {
+ let chan_needs_persist = self.update_channel_fee(chan_id, chan, new_feerate);
if chan_needs_persist == NotifyOption::DoPersist { should_persist = NotifyOption::DoPersist; }
- if err.is_err() {
- handle_errors.push(err);
- }
- retain_channel
- });
+ }
}
should_persist
/// * Broadcasting `ChannelUpdate` messages if we've been disconnected from our peer for more
/// than a minute, informing the network that they should no longer attempt to route over
/// the channel.
+ /// * Expiring a channel's previous `ChannelConfig` if necessary to only allow forwarding HTLCs
+ /// with the current `ChannelConfig`.
///
/// Note that this may cause reentrancy through `chain::Watch::update_channel` calls or feerate
/// estimate fetches.
let mut should_persist = NotifyOption::SkipPersist;
if self.process_background_events() { should_persist = NotifyOption::DoPersist; }
- let new_feerate = self.fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
+ let new_feerate = self.fee_estimator.bounded_sat_per_1000_weight(ConfirmationTarget::Normal);
- let mut handle_errors = Vec::new();
+ let mut handle_errors: Vec<(Result<(), _>, _)> = Vec::new();
let mut timed_out_mpp_htlcs = Vec::new();
{
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
let pending_msg_events = &mut channel_state.pending_msg_events;
- let short_to_id = &mut channel_state.short_to_id;
- channel_state.by_id.retain(|chan_id, chan| {
- let counterparty_node_id = chan.get_counterparty_node_id();
- let (retain_channel, chan_needs_persist, err) = self.update_channel_fee(short_to_id, pending_msg_events, chan_id, chan, new_feerate);
- if chan_needs_persist == NotifyOption::DoPersist { should_persist = NotifyOption::DoPersist; }
- if err.is_err() {
- handle_errors.push((err, counterparty_node_id));
- }
- if !retain_channel { return false; }
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ for (counterparty_node_id, peer_state_mutex) in per_peer_state.iter() {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ peer_state.channel_by_id.retain(|chan_id, chan| {
+ let chan_needs_persist = self.update_channel_fee(chan_id, chan, new_feerate);
+ if chan_needs_persist == NotifyOption::DoPersist { should_persist = NotifyOption::DoPersist; }
+
+ if let Err(e) = chan.timer_check_closing_negotiation_progress() {
+ let (needs_close, err) = convert_chan_err!(self, e, chan, chan_id);
+ handle_errors.push((Err(err), *counterparty_node_id));
+ if needs_close { return false; }
+ }
- if let Err(e) = chan.timer_check_closing_negotiation_progress() {
- let (needs_close, err) = convert_chan_err!(self, e, short_to_id, chan, chan_id);
- handle_errors.push((Err(err), chan.get_counterparty_node_id()));
- if needs_close { return false; }
- }
+ match chan.channel_update_status() {
+ ChannelUpdateStatus::Enabled if !chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::DisabledStaged),
+ ChannelUpdateStatus::Disabled if chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::EnabledStaged),
+ ChannelUpdateStatus::DisabledStaged if chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::Enabled),
+ ChannelUpdateStatus::EnabledStaged if !chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::Disabled),
+ ChannelUpdateStatus::DisabledStaged if !chan.is_live() => {
+ if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
+ pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
+ msg: update
+ });
+ }
+ should_persist = NotifyOption::DoPersist;
+ chan.set_channel_update_status(ChannelUpdateStatus::Disabled);
+ },
+ ChannelUpdateStatus::EnabledStaged if chan.is_live() => {
+ if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
+ pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
+ msg: update
+ });
+ }
+ should_persist = NotifyOption::DoPersist;
+ chan.set_channel_update_status(ChannelUpdateStatus::Enabled);
+ },
+ _ => {},
+ }
- match chan.channel_update_status() {
- ChannelUpdateStatus::Enabled if !chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::DisabledStaged),
- ChannelUpdateStatus::Disabled if chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::EnabledStaged),
- ChannelUpdateStatus::DisabledStaged if chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::Enabled),
- ChannelUpdateStatus::EnabledStaged if !chan.is_live() => chan.set_channel_update_status(ChannelUpdateStatus::Disabled),
- ChannelUpdateStatus::DisabledStaged if !chan.is_live() => {
- if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
- pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: update
- });
- }
- should_persist = NotifyOption::DoPersist;
- chan.set_channel_update_status(ChannelUpdateStatus::Disabled);
- },
- ChannelUpdateStatus::EnabledStaged if chan.is_live() => {
- if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
- pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: update
- });
- }
- should_persist = NotifyOption::DoPersist;
- chan.set_channel_update_status(ChannelUpdateStatus::Enabled);
- },
- _ => {},
- }
+ chan.maybe_expire_prev_config();
- true
- });
+ true
+ });
+ }
+ }
- channel_state.claimable_htlcs.retain(|payment_hash, (_, htlcs)| {
- if htlcs.is_empty() {
- // This should be unreachable
- debug_assert!(false);
+ self.claimable_payments.lock().unwrap().claimable_htlcs.retain(|payment_hash, (_, htlcs)| {
+ if htlcs.is_empty() {
+ // This should be unreachable
+ debug_assert!(false);
+ return false;
+ }
+ if let OnionPayload::Invoice { .. } = htlcs[0].onion_payload {
+ // Check if we've received all the parts we need for an MPP (the value of the parts adds to total_msat).
+ // In this case we're not going to handle any timeouts of the parts here.
+ if htlcs[0].total_msat == htlcs.iter().fold(0, |total, htlc| total + htlc.value) {
+ return true;
+ } else if htlcs.into_iter().any(|htlc| {
+ htlc.timer_ticks += 1;
+ return htlc.timer_ticks >= MPP_TIMEOUT_TICKS
+ }) {
+ timed_out_mpp_htlcs.extend(htlcs.drain(..).map(|htlc: ClaimableHTLC| (htlc.prev_hop, *payment_hash)));
return false;
}
- if let OnionPayload::Invoice { .. } = htlcs[0].onion_payload {
- // Check if we've received all the parts we need for an MPP (the value of the parts adds to total_msat).
- // In this case we're not going to handle any timeouts of the parts here.
- if htlcs[0].total_msat == htlcs.iter().fold(0, |total, htlc| total + htlc.value) {
- return true;
- } else if htlcs.into_iter().any(|htlc| {
- htlc.timer_ticks += 1;
- return htlc.timer_ticks >= MPP_TIMEOUT_TICKS
- }) {
- timed_out_mpp_htlcs.extend(htlcs.into_iter().map(|htlc| (htlc.prev_hop.clone(), payment_hash.clone())));
- return false;
- }
- }
- true
- });
- }
+ }
+ true
+ });
for htlc_source in timed_out_mpp_htlcs.drain(..) {
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), HTLCSource::PreviousHopData(htlc_source.0), &htlc_source.1, HTLCFailReason::Reason { failure_code: 23, data: Vec::new() });
+ let source = HTLCSource::PreviousHopData(htlc_source.0.clone());
+ let reason = HTLCFailReason::from_failure_code(23);
+ let receiver = HTLCDestination::FailedPayment { payment_hash: htlc_source.1 };
+ self.fail_htlc_backwards_internal(&source, &htlc_source.1, &reason, receiver);
}
for (err, counterparty_node_id) in handle_errors.drain(..) {
let _ = handle_error!(self, err, counterparty_node_id);
}
+
+ self.pending_outbound_payments.remove_stale_resolved_payments(&self.pending_events);
+
+ // Technically we don't need to do this here, but if we have holding cell entries in a
+ // channel that need freeing, it's better to do that here and block a background task
+ // than block the message queueing pipeline.
+ if self.check_free_holding_cells() {
+ should_persist = NotifyOption::DoPersist;
+ }
+
should_persist
});
}
/// Indicates that the preimage for payment_hash is unknown or the received amount is incorrect
- /// after a PaymentReceived event, failing the HTLC back to its origin and freeing resources
+ /// after a PaymentClaimable event, failing the HTLC back to its origin and freeing resources
/// along the path (including in our own channel on which we received it).
///
/// Note that in some cases around unclean shutdown, it is possible the payment may have
/// already been claimed by you via [`ChannelManager::claim_funds`] prior to you seeing (a
- /// second copy of) the [`events::Event::PaymentReceived`] event. Alternatively, the payment
+ /// second copy of) the [`events::Event::PaymentClaimable`] event. Alternatively, the payment
/// may have already been failed automatically by LDK if it was nearing its expiration time.
///
/// While LDK will never claim a payment automatically on your behalf (i.e. without you calling
pub fn fail_htlc_backwards(&self, payment_hash: &PaymentHash) {
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
- let mut channel_state = Some(self.channel_state.lock().unwrap());
- let removed_source = channel_state.as_mut().unwrap().claimable_htlcs.remove(payment_hash);
+ let removed_source = self.claimable_payments.lock().unwrap().claimable_htlcs.remove(payment_hash);
if let Some((_, mut sources)) = removed_source {
for htlc in sources.drain(..) {
- if channel_state.is_none() { channel_state = Some(self.channel_state.lock().unwrap()); }
- let mut htlc_msat_height_data = byte_utils::be64_to_array(htlc.value).to_vec();
- htlc_msat_height_data.extend_from_slice(&byte_utils::be32_to_array(
- self.best_block.read().unwrap().height()));
- self.fail_htlc_backwards_internal(channel_state.take().unwrap(),
- HTLCSource::PreviousHopData(htlc.prev_hop), payment_hash,
- HTLCFailReason::Reason { failure_code: 0x4000 | 15, data: htlc_msat_height_data });
+ let mut htlc_msat_height_data = htlc.value.to_be_bytes().to_vec();
+ htlc_msat_height_data.extend_from_slice(&self.best_block.read().unwrap().height().to_be_bytes());
+ let source = HTLCSource::PreviousHopData(htlc.prev_hop);
+ let reason = HTLCFailReason::reason(0x4000 | 15, htlc_msat_height_data);
+ let receiver = HTLCDestination::FailedPayment { payment_hash: *payment_hash };
+ self.fail_htlc_backwards_internal(&source, &payment_hash, &reason, receiver);
}
}
}
///
/// This is for failures on the channel on which the HTLC was *received*, not failures
/// forwarding
- fn get_htlc_inbound_temp_fail_err_and_data(&self, desired_err_code: u16, chan: &Channel<Signer>) -> (u16, Vec<u8>) {
+ fn get_htlc_inbound_temp_fail_err_and_data(&self, desired_err_code: u16, chan: &Channel<<K::Target as SignerProvider>::Signer>) -> (u16, Vec<u8>) {
// We can't be sure what SCID was used when relaying inbound towards us, so we have to
// guess somewhat. If its a public channel, we figure best to just use the real SCID (as
// we're not leaking that we have a channel with the counterparty), otherwise we try to use
/// Gets an HTLC onion failure code and error data for an `UPDATE` error, given the error code
/// that we want to return and a channel.
- fn get_htlc_temp_fail_err_and_data(&self, desired_err_code: u16, scid: u64, chan: &Channel<Signer>) -> (u16, Vec<u8>) {
+ fn get_htlc_temp_fail_err_and_data(&self, desired_err_code: u16, scid: u64, chan: &Channel<<K::Target as SignerProvider>::Signer>) -> (u16, Vec<u8>) {
debug_assert_eq!(desired_err_code & 0x1000, 0x1000);
if let Ok(upd) = self.get_channel_update_for_onion(scid, chan) {
let mut enc = VecWriter(Vec::with_capacity(upd.serialized_length() + 6));
if desired_err_code == 0x1000 | 20 {
- // TODO: underspecified, follow https://github.com/lightning/bolts/issues/791
+ // No flags for `disabled_flags` are currently defined so they're always two zero bytes.
+ // See https://github.com/lightning/bolts/blob/341ec84/04-onion-routing.md?plain=1#L1008
0u16.write(&mut enc).expect("Writes cannot fail");
}
(upd.serialized_length() as u16 + 2).write(&mut enc).expect("Writes cannot fail");
// Fail a list of HTLCs that were just freed from the holding cell. The HTLCs need to be
// failed backwards or, if they were one of our outgoing HTLCs, then their failure needs to
// be surfaced to the user.
- fn fail_holding_cell_htlcs(&self, mut htlcs_to_fail: Vec<(HTLCSource, PaymentHash)>, channel_id: [u8; 32]) {
+ fn fail_holding_cell_htlcs(
+ &self, mut htlcs_to_fail: Vec<(HTLCSource, PaymentHash)>, channel_id: [u8; 32],
+ counterparty_node_id: &PublicKey
+ ) {
+ let (failure_code, onion_failure_data) = {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(channel_id) {
+ hash_map::Entry::Occupied(chan_entry) => {
+ self.get_htlc_inbound_temp_fail_err_and_data(0x1000|7, &chan_entry.get())
+ },
+ hash_map::Entry::Vacant(_) => (0x4000|10, Vec::new())
+ }
+ } else { (0x4000|10, Vec::new()) }
+ };
+
for (htlc_src, payment_hash) in htlcs_to_fail.drain(..) {
- match htlc_src {
- HTLCSource::PreviousHopData(HTLCPreviousHopData { .. }) => {
- let (failure_code, onion_failure_data) =
- match self.channel_state.lock().unwrap().by_id.entry(channel_id) {
- hash_map::Entry::Occupied(chan_entry) => {
- self.get_htlc_inbound_temp_fail_err_and_data(0x1000|7, &chan_entry.get())
- },
- hash_map::Entry::Vacant(_) => (0x4000|10, Vec::new())
- };
- let channel_state = self.channel_state.lock().unwrap();
- self.fail_htlc_backwards_internal(channel_state,
- htlc_src, &payment_hash, HTLCFailReason::Reason { failure_code, data: onion_failure_data});
- },
- HTLCSource::OutboundRoute { session_priv, payment_id, path, payment_params, .. } => {
- let mut session_priv_bytes = [0; 32];
- session_priv_bytes.copy_from_slice(&session_priv[..]);
- let mut outbounds = self.pending_outbound_payments.lock().unwrap();
- if let hash_map::Entry::Occupied(mut payment) = outbounds.entry(payment_id) {
- if payment.get_mut().remove(&session_priv_bytes, Some(&path)) && !payment.get().is_fulfilled() {
- let retry = if let Some(payment_params_data) = payment_params {
- let path_last_hop = path.last().expect("Outbound payments must have had a valid path");
- Some(RouteParameters {
- payment_params: payment_params_data,
- final_value_msat: path_last_hop.fee_msat,
- final_cltv_expiry_delta: path_last_hop.cltv_expiry_delta,
- })
- } else { None };
- let mut pending_events = self.pending_events.lock().unwrap();
- pending_events.push(events::Event::PaymentPathFailed {
- payment_id: Some(payment_id),
- payment_hash,
- rejected_by_dest: false,
- network_update: None,
- all_paths_failed: payment.get().remaining_parts() == 0,
- path: path.clone(),
- short_channel_id: None,
- retry,
- #[cfg(test)]
- error_code: None,
- #[cfg(test)]
- error_data: None,
- });
- if payment.get().abandoned() && payment.get().remaining_parts() == 0 {
- pending_events.push(events::Event::PaymentFailed {
- payment_id,
- payment_hash: payment.get().payment_hash().expect("PendingOutboundPayments::RetriesExceeded always has a payment hash set"),
- });
- payment.remove();
- }
- }
- } else {
- log_trace!(self.logger, "Received duplicative fail for HTLC with payment_hash {}", log_bytes!(payment_hash.0));
- }
- },
- };
+ let reason = HTLCFailReason::reason(failure_code, onion_failure_data.clone());
+ let receiver = HTLCDestination::NextHopChannel { node_id: Some(counterparty_node_id.clone()), channel_id };
+ self.fail_htlc_backwards_internal(&htlc_src, &payment_hash, &reason, receiver);
}
}
/// Fails an HTLC backwards to the sender of it to us.
- /// Note that while we take a channel_state lock as input, we do *not* assume consistency here.
- /// There are several callsites that do stupid things like loop over a list of payment_hashes
- /// 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_lock: MutexGuard<ChannelHolder<Signer>>, source: HTLCSource, payment_hash: &PaymentHash, onion_error: HTLCFailReason) {
+ /// Note that we do not assume that channels corresponding to failed HTLCs are still available.
+ fn fail_htlc_backwards_internal(&self, source: &HTLCSource, payment_hash: &PaymentHash, onion_error: &HTLCFailReason, destination: HTLCDestination) {
+ #[cfg(debug_assertions)]
+ {
+ // Ensure that the `channel_state` and no peer state channel storage lock is not held
+ // when calling this function.
+ // This ensures that future code doesn't introduce a lock_order requirement for
+ // `forward_htlcs` to be locked after the `channel_state` and `per_peer_state` locks,
+ // which calling this function with the locks aquired would.
+ assert!(self.channel_state.try_lock().is_ok());
+ assert!(self.per_peer_state.try_write().is_ok());
+ }
+
//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
// from block_connected which may run during initialization prior to the chain_monitor
// being fully configured. See the docs for `ChannelManagerReadArgs` for more.
match source {
- HTLCSource::OutboundRoute { ref path, session_priv, payment_id, ref payment_params, .. } => {
- let mut session_priv_bytes = [0; 32];
- session_priv_bytes.copy_from_slice(&session_priv[..]);
- let mut outbounds = self.pending_outbound_payments.lock().unwrap();
- let mut all_paths_failed = false;
- let mut full_failure_ev = None;
- if let hash_map::Entry::Occupied(mut payment) = outbounds.entry(payment_id) {
- if !payment.get_mut().remove(&session_priv_bytes, Some(&path)) {
- log_trace!(self.logger, "Received duplicative fail for HTLC with payment_hash {}", log_bytes!(payment_hash.0));
- return;
- }
- if payment.get().is_fulfilled() {
- log_trace!(self.logger, "Received failure of HTLC with payment_hash {} after payment completion", log_bytes!(payment_hash.0));
- return;
- }
- if payment.get().remaining_parts() == 0 {
- all_paths_failed = true;
- if payment.get().abandoned() {
- full_failure_ev = Some(events::Event::PaymentFailed {
- payment_id,
- payment_hash: payment.get().payment_hash().expect("PendingOutboundPayments::RetriesExceeded always has a payment hash set"),
- });
- payment.remove();
- }
- }
- } else {
- log_trace!(self.logger, "Received duplicative fail for HTLC with payment_hash {}", log_bytes!(payment_hash.0));
- return;
- }
- mem::drop(channel_state_lock);
- let retry = if let Some(payment_params_data) = payment_params {
- let path_last_hop = path.last().expect("Outbound payments must have had a valid path");
- Some(RouteParameters {
- payment_params: payment_params_data.clone(),
- final_value_msat: path_last_hop.fee_msat,
- final_cltv_expiry_delta: path_last_hop.cltv_expiry_delta,
- })
- } else { None };
- log_trace!(self.logger, "Failing outbound payment HTLC with payment_hash {}", log_bytes!(payment_hash.0));
-
- let path_failure = match &onion_error {
- &HTLCFailReason::LightningError { ref err } => {
-#[cfg(test)]
- let (network_update, short_channel_id, payment_retryable, onion_error_code, onion_error_data) = onion_utils::process_onion_failure(&self.secp_ctx, &self.logger, &source, err.data.clone());
-#[cfg(not(test))]
- let (network_update, short_channel_id, 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!
- events::Event::PaymentPathFailed {
- payment_id: Some(payment_id),
- payment_hash: payment_hash.clone(),
- rejected_by_dest: !payment_retryable,
- network_update,
- all_paths_failed,
- path: path.clone(),
- short_channel_id,
- retry,
-#[cfg(test)]
- error_code: onion_error_code,
-#[cfg(test)]
- error_data: onion_error_data
- }
- },
- &HTLCFailReason::Reason {
-#[cfg(test)]
- ref failure_code,
-#[cfg(test)]
- ref data,
- .. } => {
- // we get a fail_malformed_htlc from the first hop
- // TODO: We'd like to generate a NetworkUpdate for temporary
- // failures here, but that would be insufficient as find_route
- // generally ignores its view of our own channels as we provide them via
- // ChannelDetails.
- // TODO: For non-temporary failures, we really should be closing the
- // channel here as we apparently can't relay through them anyway.
- events::Event::PaymentPathFailed {
- payment_id: Some(payment_id),
- payment_hash: payment_hash.clone(),
- rejected_by_dest: path.len() == 1,
- network_update: None,
- all_paths_failed,
- path: path.clone(),
- short_channel_id: Some(path.first().unwrap().short_channel_id),
- retry,
-#[cfg(test)]
- error_code: Some(*failure_code),
-#[cfg(test)]
- error_data: Some(data.clone()),
- }
- }
- };
- let mut pending_events = self.pending_events.lock().unwrap();
- pending_events.push(path_failure);
- if let Some(ev) = full_failure_ev { pending_events.push(ev); }
+ HTLCSource::OutboundRoute { ref path, ref session_priv, ref payment_id, ref payment_params, .. } => {
+ self.pending_outbound_payments.fail_htlc(source, payment_hash, onion_error, path, session_priv, payment_id, payment_params, self.probing_cookie_secret, &self.secp_ctx, &self.pending_events, &self.logger);
},
- HTLCSource::PreviousHopData(HTLCPreviousHopData { short_channel_id, htlc_id, incoming_packet_shared_secret, phantom_shared_secret, .. }) => {
- let err_packet = match onion_error {
- HTLCFailReason::Reason { failure_code, data } => {
- log_trace!(self.logger, "Failing HTLC with payment_hash {} backwards from us with code {}", log_bytes!(payment_hash.0), failure_code);
- if let Some(phantom_ss) = phantom_shared_secret {
- let phantom_packet = onion_utils::build_failure_packet(&phantom_ss, failure_code, &data[..]).encode();
- let encrypted_phantom_packet = onion_utils::encrypt_failure_packet(&phantom_ss, &phantom_packet);
- onion_utils::encrypt_failure_packet(&incoming_packet_shared_secret, &encrypted_phantom_packet.data[..])
- } else {
- let packet = onion_utils::build_failure_packet(&incoming_packet_shared_secret, failure_code, &data[..]).encode();
- onion_utils::encrypt_failure_packet(&incoming_packet_shared_secret, &packet)
- }
- },
- HTLCFailReason::LightningError { err } => {
- log_trace!(self.logger, "Failing HTLC with payment_hash {} backwards with pre-built LightningError", log_bytes!(payment_hash.0));
- onion_utils::encrypt_failure_packet(&incoming_packet_shared_secret, &err.data)
- }
- };
+ HTLCSource::PreviousHopData(HTLCPreviousHopData { ref short_channel_id, ref htlc_id, ref incoming_packet_shared_secret, ref phantom_shared_secret, ref outpoint }) => {
+ log_trace!(self.logger, "Failing HTLC with payment_hash {} backwards from us with {:?}", log_bytes!(payment_hash.0), onion_error);
+ let err_packet = onion_error.get_encrypted_failure_packet(incoming_packet_shared_secret, phantom_shared_secret);
let mut forward_event = None;
- if channel_state_lock.forward_htlcs.is_empty() {
+ let mut forward_htlcs = self.forward_htlcs.lock().unwrap();
+ if forward_htlcs.is_empty() {
forward_event = Some(Duration::from_millis(MIN_HTLC_RELAY_HOLDING_CELL_MILLIS));
}
- match channel_state_lock.forward_htlcs.entry(short_channel_id) {
+ match forward_htlcs.entry(*short_channel_id) {
hash_map::Entry::Occupied(mut entry) => {
- entry.get_mut().push(HTLCForwardInfo::FailHTLC { htlc_id, err_packet });
+ entry.get_mut().push(HTLCForwardInfo::FailHTLC { htlc_id: *htlc_id, err_packet });
},
hash_map::Entry::Vacant(entry) => {
- entry.insert(vec!(HTLCForwardInfo::FailHTLC { htlc_id, err_packet }));
+ entry.insert(vec!(HTLCForwardInfo::FailHTLC { htlc_id: *htlc_id, err_packet }));
}
}
- mem::drop(channel_state_lock);
+ mem::drop(forward_htlcs);
+ let mut pending_events = self.pending_events.lock().unwrap();
if let Some(time) = forward_event {
- let mut pending_events = self.pending_events.lock().unwrap();
pending_events.push(events::Event::PendingHTLCsForwardable {
time_forwardable: time
});
}
+ pending_events.push(events::Event::HTLCHandlingFailed {
+ prev_channel_id: outpoint.to_channel_id(),
+ failed_next_destination: destination,
+ });
},
}
}
- /// Provides a payment preimage in response to [`Event::PaymentReceived`], generating any
+ /// Provides a payment preimage in response to [`Event::PaymentClaimable`], generating any
/// [`MessageSendEvent`]s needed to claim the payment.
///
/// Note that calling this method does *not* guarantee that the payment has been claimed. You
/// provided to your [`EventHandler`] when [`process_pending_events`] is next called.
///
/// Note that if you did not set an `amount_msat` when calling [`create_inbound_payment`] or
- /// [`create_inbound_payment_for_hash`] you must check that the amount in the `PaymentReceived`
+ /// [`create_inbound_payment_for_hash`] you must check that the amount in the `PaymentClaimable`
/// event matches your expectation. If you fail to do so and call this method, you may provide
/// the sender "proof-of-payment" when they did not fulfill the full expected payment.
///
- /// [`Event::PaymentReceived`]: crate::util::events::Event::PaymentReceived
+ /// [`Event::PaymentClaimable`]: crate::util::events::Event::PaymentClaimable
/// [`Event::PaymentClaimed`]: crate::util::events::Event::PaymentClaimed
/// [`process_pending_events`]: EventsProvider::process_pending_events
/// [`create_inbound_payment`]: Self::create_inbound_payment
/// [`create_inbound_payment_for_hash`]: Self::create_inbound_payment_for_hash
- /// [`get_and_clear_pending_msg_events`]: MessageSendEventsProvider::get_and_clear_pending_msg_events
pub fn claim_funds(&self, payment_preimage: PaymentPreimage) {
let payment_hash = PaymentHash(Sha256::hash(&payment_preimage.0).into_inner());
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
+ let mut sources = {
+ let mut claimable_payments = self.claimable_payments.lock().unwrap();
+ if let Some((payment_purpose, sources)) = claimable_payments.claimable_htlcs.remove(&payment_hash) {
+ let mut receiver_node_id = self.our_network_pubkey;
+ for htlc in sources.iter() {
+ if htlc.prev_hop.phantom_shared_secret.is_some() {
+ let phantom_pubkey = self.keys_manager.get_node_id(Recipient::PhantomNode)
+ .expect("Failed to get node_id for phantom node recipient");
+ receiver_node_id = phantom_pubkey;
+ break;
+ }
+ }
+
+ let dup_purpose = claimable_payments.pending_claiming_payments.insert(payment_hash,
+ ClaimingPayment { amount_msat: sources.iter().map(|source| source.value).sum(),
+ payment_purpose, receiver_node_id,
+ });
+ if dup_purpose.is_some() {
+ debug_assert!(false, "Shouldn't get a duplicate pending claim event ever");
+ log_error!(self.logger, "Got a duplicate pending claimable event on payment hash {}! Please report this bug",
+ log_bytes!(payment_hash.0));
+ }
+ sources
+ } else { return; }
+ };
+ debug_assert!(!sources.is_empty());
+
+ // If we are claiming an MPP payment, we check that all channels which contain a claimable
+ // HTLC still exist. While this isn't guaranteed to remain true if a channel closes while
+ // we're claiming (or even after we claim, before the commitment update dance completes),
+ // it should be a relatively rare race, and we'd rather not claim HTLCs that require us to
+ // go on-chain (and lose the on-chain fee to do so) than just reject the payment.
+ //
+ // Note that we'll still always get our funds - as long as the generated
+ // `ChannelMonitorUpdate` makes it out to the relevant monitor we can claim on-chain.
+ //
+ // If we find an HTLC which we would need to claim but for which we do not have a
+ // channel, we will fail all parts of the MPP payment. While we could wait and see if
+ // the sender retries the already-failed path(s), it should be a pretty rare case where
+ // we got all the HTLCs and then a channel closed while we were waiting for the user to
+ // provide the preimage, so worrying too much about the optimal handling isn't worth
+ // it.
+ let mut claimable_amt_msat = 0;
+ let mut expected_amt_msat = None;
+ let mut valid_mpp = true;
+ let mut errs = 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((payment_purpose, mut sources)) = removed_source {
- assert!(!sources.is_empty());
-
- // If we are claiming an MPP payment, we have to take special care to ensure that each
- // channel exists before claiming all of the payments (inside one lock).
- // Note that channel existance is sufficient as we should always get a monitor update
- // which will take care of the real HTLC claim enforcement.
- //
- // If we find an HTLC which we would need to claim but for which we do not have a
- // channel, we will fail all parts of the MPP payment. While we could wait and see if
- // the sender retries the already-failed path(s), it should be a pretty rare case where
- // we got all the HTLCs and then a channel closed while we were waiting for the user to
- // provide the preimage, so worrying too much about the optimal handling isn't worth
- // it.
- let mut claimable_amt_msat = 0;
- let mut expected_amt_msat = None;
- let mut valid_mpp = true;
- for htlc in sources.iter() {
- if let None = channel_state.as_ref().unwrap().short_to_id.get(&htlc.prev_hop.short_channel_id) {
+ let mut per_peer_state = Some(self.per_peer_state.read().unwrap());
+ for htlc in sources.iter() {
+ let (counterparty_node_id, chan_id) = match self.short_to_chan_info.read().unwrap().get(&htlc.prev_hop.short_channel_id) {
+ Some((cp_id, chan_id)) => (cp_id.clone(), chan_id.clone()),
+ None => {
valid_mpp = false;
break;
}
- if expected_amt_msat.is_some() && expected_amt_msat != Some(htlc.total_msat) {
- log_error!(self.logger, "Somehow ended up with an MPP payment with different total amounts - this should not be reachable!");
+ };
+
+ if let None = per_peer_state.as_ref().unwrap().get(&counterparty_node_id) {
+ valid_mpp = false;
+ break;
+ }
+
+ let peer_state_mutex = per_peer_state.as_ref().unwrap().get(&counterparty_node_id).unwrap();
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+
+ if let None = peer_state.channel_by_id.get(&chan_id) {
+ valid_mpp = false;
+ break;
+ }
+
+ if expected_amt_msat.is_some() && expected_amt_msat != Some(htlc.total_msat) {
+ log_error!(self.logger, "Somehow ended up with an MPP payment with different total amounts - this should not be reachable!");
+ debug_assert!(false);
+ valid_mpp = false;
+ break;
+ }
+
+ expected_amt_msat = Some(htlc.total_msat);
+ if let OnionPayload::Spontaneous(_) = &htlc.onion_payload {
+ // We don't currently support MPP for spontaneous payments, so just check
+ // that there's one payment here and move on.
+ if sources.len() != 1 {
+ log_error!(self.logger, "Somehow ended up with an MPP spontaneous payment - this should not be reachable!");
debug_assert!(false);
valid_mpp = false;
break;
}
- expected_amt_msat = Some(htlc.total_msat);
- if let OnionPayload::Spontaneous(_) = &htlc.onion_payload {
- // We don't currently support MPP for spontaneous payments, so just check
- // that there's one payment here and move on.
- if sources.len() != 1 {
- log_error!(self.logger, "Somehow ended up with an MPP spontaneous payment - this should not be reachable!");
- debug_assert!(false);
- valid_mpp = false;
- break;
- }
- }
-
- claimable_amt_msat += htlc.value;
- }
- if sources.is_empty() || expected_amt_msat.is_none() {
- log_info!(self.logger, "Attempted to claim an incomplete payment which no longer had any available HTLCs!");
- return;
- }
- if claimable_amt_msat != expected_amt_msat.unwrap() {
- log_info!(self.logger, "Attempted to claim an incomplete payment, expected {} msat, had {} available to claim.",
- expected_amt_msat.unwrap(), claimable_amt_msat);
- return;
}
- let mut errs = Vec::new();
- let mut claimed_any_htlcs = false;
+ claimable_amt_msat += htlc.value;
+ }
+ if sources.is_empty() || expected_amt_msat.is_none() {
+ mem::drop(channel_state);
+ mem::drop(per_peer_state);
+ self.claimable_payments.lock().unwrap().pending_claiming_payments.remove(&payment_hash);
+ log_info!(self.logger, "Attempted to claim an incomplete payment which no longer had any available HTLCs!");
+ return;
+ }
+ if claimable_amt_msat != expected_amt_msat.unwrap() {
+ mem::drop(channel_state);
+ mem::drop(per_peer_state);
+ self.claimable_payments.lock().unwrap().pending_claiming_payments.remove(&payment_hash);
+ log_info!(self.logger, "Attempted to claim an incomplete payment, expected {} msat, had {} available to claim.",
+ expected_amt_msat.unwrap(), claimable_amt_msat);
+ return;
+ }
+ if valid_mpp {
for htlc in sources.drain(..) {
- if !valid_mpp {
- if channel_state.is_none() { channel_state = Some(self.channel_state.lock().unwrap()); }
- let mut htlc_msat_height_data = byte_utils::be64_to_array(htlc.value).to_vec();
- htlc_msat_height_data.extend_from_slice(&byte_utils::be32_to_array(
- self.best_block.read().unwrap().height()));
- self.fail_htlc_backwards_internal(channel_state.take().unwrap(),
- HTLCSource::PreviousHopData(htlc.prev_hop), &payment_hash,
- HTLCFailReason::Reason { failure_code: 0x4000|15, data: htlc_msat_height_data });
- } else {
- match self.claim_funds_from_hop(channel_state.as_mut().unwrap(), htlc.prev_hop, payment_preimage) {
- ClaimFundsFromHop::MonitorUpdateFail(pk, err, _) => {
- if let msgs::ErrorAction::IgnoreError = err.err.action {
- // We got a temporary failure updating monitor, but will claim the
- // HTLC when the monitor updating is restored (or on chain).
- log_error!(self.logger, "Temporary failure claiming HTLC, treating as success: {}", err.err.err);
- claimed_any_htlcs = true;
- } else { errs.push((pk, err)); }
- },
- ClaimFundsFromHop::PrevHopForceClosed => unreachable!("We already checked for channel existence, we can't fail here!"),
- ClaimFundsFromHop::DuplicateClaim => {
- // While we should never get here in most cases, if we do, it likely
- // indicates that the HTLC was timed out some time ago and is no longer
- // available to be claimed. Thus, it does not make sense to set
- // `claimed_any_htlcs`.
- },
- ClaimFundsFromHop::Success(_) => claimed_any_htlcs = true,
- }
+ if channel_state.is_none() { channel_state = Some(self.channel_state.lock().unwrap()); }
+ if per_peer_state.is_none() { per_peer_state = Some(self.per_peer_state.read().unwrap()); }
+ if let Err((pk, err)) = self.claim_funds_from_hop(channel_state.take().unwrap(), per_peer_state.take().unwrap(),
+ htlc.prev_hop, payment_preimage,
+ |_| Some(MonitorUpdateCompletionAction::PaymentClaimed { payment_hash }))
+ {
+ if let msgs::ErrorAction::IgnoreError = err.err.action {
+ // We got a temporary failure updating monitor, but will claim the
+ // HTLC when the monitor updating is restored (or on chain).
+ log_error!(self.logger, "Temporary failure claiming HTLC, treating as success: {}", err.err.err);
+ } else { errs.push((pk, err)); }
}
}
-
- if claimed_any_htlcs {
- self.pending_events.lock().unwrap().push(events::Event::PaymentClaimed {
- payment_hash,
- purpose: payment_purpose,
- amount_msat: claimable_amt_msat,
- });
+ }
+ mem::drop(channel_state);
+ mem::drop(per_peer_state);
+ if !valid_mpp {
+ for htlc in sources.drain(..) {
+ let mut htlc_msat_height_data = htlc.value.to_be_bytes().to_vec();
+ htlc_msat_height_data.extend_from_slice(&self.best_block.read().unwrap().height().to_be_bytes());
+ let source = HTLCSource::PreviousHopData(htlc.prev_hop);
+ let reason = HTLCFailReason::reason(0x4000 | 15, htlc_msat_height_data);
+ let receiver = HTLCDestination::FailedPayment { payment_hash };
+ self.fail_htlc_backwards_internal(&source, &payment_hash, &reason, receiver);
}
+ self.claimable_payments.lock().unwrap().pending_claiming_payments.remove(&payment_hash);
+ }
- // Now that we've done the entire above loop in one lock, we can handle any errors
- // which were generated.
- channel_state.take();
-
- for (counterparty_node_id, err) in errs.drain(..) {
- let res: Result<(), _> = Err(err);
- let _ = handle_error!(self, res, counterparty_node_id);
- }
+ // Now we can handle any errors which were generated.
+ for (counterparty_node_id, err) in errs.drain(..) {
+ let res: Result<(), _> = Err(err);
+ let _ = handle_error!(self, res, counterparty_node_id);
}
}
- fn claim_funds_from_hop(&self, channel_state_lock: &mut MutexGuard<ChannelHolder<Signer>>, prev_hop: HTLCPreviousHopData, payment_preimage: PaymentPreimage) -> ClaimFundsFromHop {
+ fn claim_funds_from_hop<ComplFunc: FnOnce(Option<u64>) -> Option<MonitorUpdateCompletionAction>>(&self,
+ mut channel_state_lock: MutexGuard<ChannelHolder>,
+ per_peer_state_lock: RwLockReadGuard<HashMap<PublicKey, Mutex<PeerState<<K::Target as SignerProvider>::Signer>>>>,
+ prev_hop: HTLCPreviousHopData, payment_preimage: PaymentPreimage, completion_action: ComplFunc)
+ -> Result<(), (PublicKey, MsgHandleErrInternal)> {
//TODO: Delay the claimed_funds relaying just like we do outbound relay!
- let channel_state = &mut **channel_state_lock;
- let chan_id = match channel_state.short_to_id.get(&prev_hop.short_channel_id) {
- Some(chan_id) => chan_id.clone(),
- None => {
- return ClaimFundsFromHop::PrevHopForceClosed
- }
+
+ let chan_id = prev_hop.outpoint.to_channel_id();
+ let channel_state = &mut *channel_state_lock;
+
+ let counterparty_node_id_opt = match self.short_to_chan_info.read().unwrap().get(&prev_hop.short_channel_id) {
+ Some((cp_id, _dup_chan_id)) => Some(cp_id.clone()),
+ None => None
};
- if let hash_map::Entry::Occupied(mut chan) = channel_state.by_id.entry(chan_id) {
- match chan.get_mut().get_update_fulfill_htlc_and_commit(prev_hop.htlc_id, payment_preimage, &self.logger) {
- Ok(msgs_monitor_option) => {
- if let UpdateFulfillCommitFetch::NewClaim { msgs, htlc_value_msat, monitor_update } = msgs_monitor_option {
- if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
- log_given_level!(self.logger, if e == ChannelMonitorUpdateErr::PermanentFailure { Level::Error } else { Level::Debug },
- "Failed to update channel monitor with preimage {:?}: {:?}",
- payment_preimage, e);
- return ClaimFundsFromHop::MonitorUpdateFail(
- chan.get().get_counterparty_node_id(),
- handle_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::CommitmentFirst, false, msgs.is_some()).unwrap_err(),
- Some(htlc_value_msat)
- );
- }
- if let Some((msg, commitment_signed)) = msgs {
- log_debug!(self.logger, "Claiming funds for HTLC with preimage {} resulted in a commitment_signed for channel {}",
- log_bytes!(payment_preimage.0), log_bytes!(chan.get().channel_id()));
- channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: chan.get().get_counterparty_node_id(),
- updates: msgs::CommitmentUpdate {
- update_add_htlcs: Vec::new(),
- update_fulfill_htlcs: vec![msg],
- update_fail_htlcs: Vec::new(),
- update_fail_malformed_htlcs: Vec::new(),
- update_fee: None,
- commitment_signed,
+ let (found_channel, mut peer_state_opt) = if counterparty_node_id_opt.is_some() && per_peer_state_lock.get(&counterparty_node_id_opt.unwrap()).is_some() {
+ let peer_mutex = per_peer_state_lock.get(&counterparty_node_id_opt.unwrap()).unwrap();
+ let peer_state = peer_mutex.lock().unwrap();
+ let found_channel = peer_state.channel_by_id.contains_key(&chan_id);
+ (found_channel, Some(peer_state))
+ } else { (false, None) };
+
+ if found_channel {
+ if let hash_map::Entry::Occupied(mut chan) = peer_state_opt.as_mut().unwrap().channel_by_id.entry(chan_id) {
+ let counterparty_node_id = chan.get().get_counterparty_node_id();
+ match chan.get_mut().get_update_fulfill_htlc_and_commit(prev_hop.htlc_id, payment_preimage, &self.logger) {
+ Ok(msgs_monitor_option) => {
+ if let UpdateFulfillCommitFetch::NewClaim { msgs, htlc_value_msat, monitor_update } = msgs_monitor_option {
+ match self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
+ ChannelMonitorUpdateStatus::Completed => {},
+ e => {
+ log_given_level!(self.logger, if e == ChannelMonitorUpdateStatus::PermanentFailure { Level::Error } else { Level::Debug },
+ "Failed to update channel monitor with preimage {:?}: {:?}",
+ payment_preimage, e);
+ let err = handle_monitor_update_res!(self, e, chan, RAACommitmentOrder::CommitmentFirst, false, msgs.is_some()).unwrap_err();
+ mem::drop(channel_state_lock);
+ mem::drop(peer_state_opt);
+ mem::drop(per_peer_state_lock);
+ self.handle_monitor_update_completion_actions(completion_action(Some(htlc_value_msat)));
+ return Err((counterparty_node_id, err));
}
- });
- }
- return ClaimFundsFromHop::Success(htlc_value_msat);
- } else {
- return ClaimFundsFromHop::DuplicateClaim;
- }
- },
- Err((e, monitor_update)) => {
- if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
- log_given_level!(self.logger, if e == ChannelMonitorUpdateErr::PermanentFailure { Level::Error } else { Level::Info },
- "Failed to update channel monitor with preimage {:?} immediately prior to force-close: {:?}",
- payment_preimage, e);
- }
- let counterparty_node_id = chan.get().get_counterparty_node_id();
- let (drop, res) = convert_chan_err!(self, e, channel_state.short_to_id, chan.get_mut(), &chan_id);
- if drop {
- chan.remove_entry();
- }
- return ClaimFundsFromHop::MonitorUpdateFail(counterparty_node_id, res, None);
- },
- }
- } else { unreachable!(); }
- }
-
- fn finalize_claims(&self, mut sources: Vec<HTLCSource>) {
- let mut outbounds = self.pending_outbound_payments.lock().unwrap();
- let mut pending_events = self.pending_events.lock().unwrap();
- for source in sources.drain(..) {
- if let HTLCSource::OutboundRoute { session_priv, payment_id, path, .. } = source {
- let mut session_priv_bytes = [0; 32];
- session_priv_bytes.copy_from_slice(&session_priv[..]);
- if let hash_map::Entry::Occupied(mut payment) = outbounds.entry(payment_id) {
- assert!(payment.get().is_fulfilled());
- if payment.get_mut().remove(&session_priv_bytes, None) {
- pending_events.push(
- events::Event::PaymentPathSuccessful {
- payment_id,
- payment_hash: payment.get().payment_hash(),
- path,
}
- );
- }
- if payment.get().remaining_parts() == 0 {
- payment.remove();
- }
+ if let Some((msg, commitment_signed)) = msgs {
+ log_debug!(self.logger, "Claiming funds for HTLC with preimage {} resulted in a commitment_signed for channel {}",
+ log_bytes!(payment_preimage.0), log_bytes!(chan.get().channel_id()));
+ channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
+ node_id: chan.get().get_counterparty_node_id(),
+ updates: msgs::CommitmentUpdate {
+ update_add_htlcs: Vec::new(),
+ update_fulfill_htlcs: vec![msg],
+ update_fail_htlcs: Vec::new(),
+ update_fail_malformed_htlcs: Vec::new(),
+ update_fee: None,
+ commitment_signed,
+ }
+ });
+ }
+ mem::drop(channel_state_lock);
+ mem::drop(peer_state_opt);
+ mem::drop(per_peer_state_lock);
+ self.handle_monitor_update_completion_actions(completion_action(Some(htlc_value_msat)));
+ Ok(())
+ } else {
+ Ok(())
+ }
+ },
+ Err((e, monitor_update)) => {
+ match self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
+ ChannelMonitorUpdateStatus::Completed => {},
+ e => {
+ // TODO: This needs to be handled somehow - if we receive a monitor update
+ // with a preimage we *must* somehow manage to propagate it to the upstream
+ // channel, or we must have an ability to receive the same update and try
+ // again on restart.
+ log_given_level!(self.logger, if e == ChannelMonitorUpdateStatus::PermanentFailure { Level::Error } else { Level::Info },
+ "Failed to update channel monitor with preimage {:?} immediately prior to force-close: {:?}",
+ payment_preimage, e);
+ },
+ }
+ let (drop, res) = convert_chan_err!(self, e, chan.get_mut(), &chan_id);
+ if drop {
+ chan.remove_entry();
+ }
+ mem::drop(channel_state_lock);
+ mem::drop(peer_state_opt);
+ mem::drop(per_peer_state_lock);
+ self.handle_monitor_update_completion_actions(completion_action(None));
+ Err((counterparty_node_id, res))
+ },
}
+ } else {
+ // We've held the peer_state mutex since finding the channel and setting
+ // found_channel to true, so the channel can't have been dropped.
+ unreachable!()
}
- }
- }
-
- fn claim_funds_internal(&self, mut channel_state_lock: MutexGuard<ChannelHolder<Signer>>, source: HTLCSource, payment_preimage: PaymentPreimage, forwarded_htlc_value_msat: Option<u64>, from_onchain: bool, next_channel_id: [u8; 32]) {
+ } else {
+ let preimage_update = ChannelMonitorUpdate {
+ update_id: CLOSED_CHANNEL_UPDATE_ID,
+ updates: vec![ChannelMonitorUpdateStep::PaymentPreimage {
+ payment_preimage,
+ }],
+ };
+ // We update the ChannelMonitor on the backward link, after
+ // receiving an `update_fulfill_htlc` from the forward link.
+ let update_res = self.chain_monitor.update_channel(prev_hop.outpoint, preimage_update);
+ if update_res != ChannelMonitorUpdateStatus::Completed {
+ // TODO: This needs to be handled somehow - if we receive a monitor update
+ // with a preimage we *must* somehow manage to propagate it to the upstream
+ // channel, or we must have an ability to receive the same event and try
+ // again on restart.
+ log_error!(self.logger, "Critical error: failed to update channel monitor with preimage {:?}: {:?}",
+ payment_preimage, update_res);
+ }
+ mem::drop(channel_state_lock);
+ mem::drop(peer_state_opt);
+ mem::drop(per_peer_state_lock);
+ // Note that we do process the completion action here. This totally could be a
+ // duplicate claim, but we have no way of knowing without interrogating the
+ // `ChannelMonitor` we've provided the above update to. Instead, note that `Event`s are
+ // generally always allowed to be duplicative (and it's specifically noted in
+ // `PaymentForwarded`).
+ self.handle_monitor_update_completion_actions(completion_action(None));
+ Ok(())
+ }
+ }
+
+ fn finalize_claims(&self, sources: Vec<HTLCSource>) {
+ self.pending_outbound_payments.finalize_claims(sources, &self.pending_events);
+ }
+
+ fn claim_funds_internal(&self, channel_state_lock: MutexGuard<ChannelHolder>, source: HTLCSource, payment_preimage: PaymentPreimage, forwarded_htlc_value_msat: Option<u64>, from_onchain: bool, next_channel_id: [u8; 32]) {
match source {
HTLCSource::OutboundRoute { session_priv, payment_id, path, .. } => {
mem::drop(channel_state_lock);
- let mut session_priv_bytes = [0; 32];
- session_priv_bytes.copy_from_slice(&session_priv[..]);
- let mut outbounds = self.pending_outbound_payments.lock().unwrap();
- if let hash_map::Entry::Occupied(mut payment) = outbounds.entry(payment_id) {
- let mut pending_events = self.pending_events.lock().unwrap();
- if !payment.get().is_fulfilled() {
- let payment_hash = PaymentHash(Sha256::hash(&payment_preimage.0).into_inner());
- let fee_paid_msat = payment.get().get_pending_fee_msat();
- pending_events.push(
- events::Event::PaymentSent {
- payment_id: Some(payment_id),
- payment_preimage,
- payment_hash,
- fee_paid_msat,
- }
- );
- payment.get_mut().mark_fulfilled();
- }
-
- if from_onchain {
- // We currently immediately remove HTLCs which were fulfilled on-chain.
- // This could potentially lead to removing a pending payment too early,
- // with a reorg of one block causing us to re-add the fulfilled payment on
- // restart.
- // TODO: We should have a second monitor event that informs us of payments
- // irrevocably fulfilled.
- if payment.get_mut().remove(&session_priv_bytes, Some(&path)) {
- let payment_hash = Some(PaymentHash(Sha256::hash(&payment_preimage.0).into_inner()));
- pending_events.push(
- events::Event::PaymentPathSuccessful {
- payment_id,
- payment_hash,
- path,
- }
- );
- }
-
- if payment.get().remaining_parts() == 0 {
- payment.remove();
- }
- }
- } else {
- log_trace!(self.logger, "Received duplicative fulfill for HTLC with payment_preimage {}", log_bytes!(payment_preimage.0));
- }
+ self.pending_outbound_payments.claim_htlc(payment_id, payment_preimage, session_priv, path, from_onchain, &self.pending_events, &self.logger);
},
HTLCSource::PreviousHopData(hop_data) => {
let prev_outpoint = hop_data.outpoint;
- let res = self.claim_funds_from_hop(&mut channel_state_lock, hop_data, payment_preimage);
- let claimed_htlc = if let ClaimFundsFromHop::DuplicateClaim = res { false } else { true };
- let htlc_claim_value_msat = match res {
- ClaimFundsFromHop::MonitorUpdateFail(_, _, amt_opt) => amt_opt,
- ClaimFundsFromHop::Success(amt) => Some(amt),
- _ => None,
- };
- if let ClaimFundsFromHop::PrevHopForceClosed = res {
- let preimage_update = ChannelMonitorUpdate {
- update_id: CLOSED_CHANNEL_UPDATE_ID,
- updates: vec![ChannelMonitorUpdateStep::PaymentPreimage {
- payment_preimage: payment_preimage.clone(),
- }],
- };
- // We update the ChannelMonitor on the backward link, after
- // receiving an offchain preimage event from the forward link (the
- // event being update_fulfill_htlc).
- if let Err(e) = self.chain_monitor.update_channel(prev_outpoint, preimage_update) {
- log_error!(self.logger, "Critical error: failed to update channel monitor with preimage {:?}: {:?}",
- payment_preimage, e);
- }
- // Note that we do *not* set `claimed_htlc` to false here. In fact, this
- // totally could be a duplicate claim, but we have no way of knowing
- // without interrogating the `ChannelMonitor` we've provided the above
- // update to. Instead, we simply document in `PaymentForwarded` that this
- // can happen.
- }
- mem::drop(channel_state_lock);
- if let ClaimFundsFromHop::MonitorUpdateFail(pk, err, _) = res {
+ let res = self.claim_funds_from_hop(channel_state_lock, self.per_peer_state.read().unwrap(), hop_data, payment_preimage,
+ |htlc_claim_value_msat| {
+ if let Some(forwarded_htlc_value) = forwarded_htlc_value_msat {
+ let fee_earned_msat = if let Some(claimed_htlc_value) = htlc_claim_value_msat {
+ Some(claimed_htlc_value - forwarded_htlc_value)
+ } else { None };
+
+ let prev_channel_id = Some(prev_outpoint.to_channel_id());
+ let next_channel_id = Some(next_channel_id);
+
+ Some(MonitorUpdateCompletionAction::EmitEvent { event: events::Event::PaymentForwarded {
+ fee_earned_msat,
+ claim_from_onchain_tx: from_onchain,
+ prev_channel_id,
+ next_channel_id,
+ }})
+ } else { None }
+ });
+ if let Err((pk, err)) = res {
let result: Result<(), _> = Err(err);
let _ = handle_error!(self, result, pk);
}
+ },
+ }
+ }
- if claimed_htlc {
- if let Some(forwarded_htlc_value) = forwarded_htlc_value_msat {
- let fee_earned_msat = if let Some(claimed_htlc_value) = htlc_claim_value_msat {
- Some(claimed_htlc_value - forwarded_htlc_value)
- } else { None };
-
- let mut pending_events = self.pending_events.lock().unwrap();
- let prev_channel_id = Some(prev_outpoint.to_channel_id());
- let next_channel_id = Some(next_channel_id);
-
- pending_events.push(events::Event::PaymentForwarded {
- fee_earned_msat,
- claim_from_onchain_tx: from_onchain,
- prev_channel_id,
- next_channel_id,
+ /// Gets the node_id held by this ChannelManager
+ pub fn get_our_node_id(&self) -> PublicKey {
+ self.our_network_pubkey.clone()
+ }
+
+ fn handle_monitor_update_completion_actions<I: IntoIterator<Item=MonitorUpdateCompletionAction>>(&self, actions: I) {
+ for action in actions.into_iter() {
+ match action {
+ MonitorUpdateCompletionAction::PaymentClaimed { payment_hash } => {
+ let payment = self.claimable_payments.lock().unwrap().pending_claiming_payments.remove(&payment_hash);
+ if let Some(ClaimingPayment { amount_msat, payment_purpose: purpose, receiver_node_id }) = payment {
+ self.pending_events.lock().unwrap().push(events::Event::PaymentClaimed {
+ payment_hash, purpose, amount_msat, receiver_node_id: Some(receiver_node_id),
});
}
- }
- },
+ },
+ MonitorUpdateCompletionAction::EmitEvent { event } => {
+ self.pending_events.lock().unwrap().push(event);
+ },
+ }
}
}
- /// Gets the node_id held by this ChannelManager
- pub fn get_our_node_id(&self) -> PublicKey {
- self.our_network_pubkey.clone()
+ /// Handles a channel reentering a functional state, either due to reconnect or a monitor
+ /// update completion.
+ fn handle_channel_resumption(&self, pending_msg_events: &mut Vec<MessageSendEvent>,
+ channel: &mut Channel<<K::Target as SignerProvider>::Signer>, raa: Option<msgs::RevokeAndACK>,
+ commitment_update: Option<msgs::CommitmentUpdate>, order: RAACommitmentOrder,
+ pending_forwards: Vec<(PendingHTLCInfo, u64)>, funding_broadcastable: Option<Transaction>,
+ channel_ready: Option<msgs::ChannelReady>, announcement_sigs: Option<msgs::AnnouncementSignatures>)
+ -> Option<(u64, OutPoint, u128, Vec<(PendingHTLCInfo, u64)>)> {
+ let mut htlc_forwards = None;
+
+ let counterparty_node_id = channel.get_counterparty_node_id();
+ if !pending_forwards.is_empty() {
+ htlc_forwards = Some((channel.get_short_channel_id().unwrap_or(channel.outbound_scid_alias()),
+ channel.get_funding_txo().unwrap(), channel.get_user_id(), pending_forwards));
+ }
+
+ if let Some(msg) = channel_ready {
+ send_channel_ready!(self, pending_msg_events, channel, msg);
+ }
+ if let Some(msg) = announcement_sigs {
+ pending_msg_events.push(events::MessageSendEvent::SendAnnouncementSignatures {
+ node_id: counterparty_node_id,
+ msg,
+ });
+ }
+
+ emit_channel_ready_event!(self, channel);
+
+ macro_rules! handle_cs { () => {
+ if let Some(update) = commitment_update {
+ pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
+ node_id: counterparty_node_id,
+ updates: update,
+ });
+ }
+ } }
+ macro_rules! handle_raa { () => {
+ if let Some(revoke_and_ack) = raa {
+ pending_msg_events.push(events::MessageSendEvent::SendRevokeAndACK {
+ node_id: counterparty_node_id,
+ msg: revoke_and_ack,
+ });
+ }
+ } }
+ match order {
+ RAACommitmentOrder::CommitmentFirst => {
+ handle_cs!();
+ handle_raa!();
+ },
+ RAACommitmentOrder::RevokeAndACKFirst => {
+ handle_raa!();
+ handle_cs!();
+ },
+ }
+
+ if let Some(tx) = funding_broadcastable {
+ log_info!(self.logger, "Broadcasting funding transaction with txid {}", tx.txid());
+ self.tx_broadcaster.broadcast_transaction(&tx);
+ }
+
+ htlc_forwards
}
- fn channel_monitor_updated(&self, funding_txo: &OutPoint, highest_applied_update_id: u64) {
+ fn channel_monitor_updated(&self, funding_txo: &OutPoint, highest_applied_update_id: u64, counterparty_node_id: Option<&PublicKey>) {
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
- let chan_restoration_res;
- let (mut pending_failures, finalized_claims) = {
+ let htlc_forwards;
+ let (mut pending_failures, finalized_claims, counterparty_node_id) = {
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
- let mut channel = match channel_state.by_id.entry(funding_txo.to_channel_id()) {
- hash_map::Entry::Occupied(chan) => chan,
- hash_map::Entry::Vacant(_) => return,
+ let counterparty_node_id = match counterparty_node_id {
+ Some(cp_id) => cp_id.clone(),
+ None => {
+ // TODO: Once we can rely on the counterparty_node_id from the
+ // monitor event, this and the id_to_peer map should be removed.
+ let id_to_peer = self.id_to_peer.lock().unwrap();
+ match id_to_peer.get(&funding_txo.to_channel_id()) {
+ Some(cp_id) => cp_id.clone(),
+ None => return,
+ }
+ }
+ };
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ let mut peer_state_lock;
+ let mut channel = {
+ if let Some(peer_state_mutex) = per_peer_state.get(&counterparty_node_id) {
+ peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(funding_txo.to_channel_id()){
+ hash_map::Entry::Occupied(chan) => chan,
+ hash_map::Entry::Vacant(_) => return,
+ }
+ } else { return }
};
if !channel.get().is_awaiting_monitor_update() || channel.get().get_latest_monitor_update_id() != highest_applied_update_id {
return;
})
} else { None }
} else { None };
- chan_restoration_res = handle_chan_restoration_locked!(self, channel_lock, channel_state, channel, updates.raa, updates.commitment_update, updates.order, None, updates.accepted_htlcs, updates.funding_broadcastable, updates.channel_ready, updates.announcement_sigs);
+ htlc_forwards = self.handle_channel_resumption(&mut channel_state.pending_msg_events, channel.get_mut(), updates.raa, updates.commitment_update, updates.order, updates.accepted_htlcs, updates.funding_broadcastable, updates.channel_ready, updates.announcement_sigs);
if let Some(upd) = channel_update {
channel_state.pending_msg_events.push(upd);
}
- (updates.failed_htlcs, updates.finalized_claimed_htlcs)
+
+ (updates.failed_htlcs, updates.finalized_claimed_htlcs, counterparty_node_id)
};
- post_handle_chan_restoration!(self, chan_restoration_res);
+ if let Some(forwards) = htlc_forwards {
+ self.forward_htlcs(&mut [forwards][..]);
+ }
self.finalize_claims(finalized_claims);
for failure in pending_failures.drain(..) {
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), failure.0, &failure.1, failure.2);
+ let receiver = HTLCDestination::NextHopChannel { node_id: Some(counterparty_node_id), channel_id: funding_txo.to_channel_id() };
+ self.fail_htlc_backwards_internal(&failure.0, &failure.1, &failure.2, receiver);
}
}
///
/// [`Event::OpenChannelRequest`]: events::Event::OpenChannelRequest
/// [`Event::ChannelClosed::user_channel_id`]: events::Event::ChannelClosed::user_channel_id
- pub fn accept_inbound_channel(&self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, user_channel_id: u64) -> Result<(), APIError> {
+ pub fn accept_inbound_channel(&self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, user_channel_id: u128) -> Result<(), APIError> {
self.do_accept_inbound_channel(temporary_channel_id, counterparty_node_id, false, user_channel_id)
}
///
/// [`Event::OpenChannelRequest`]: events::Event::OpenChannelRequest
/// [`Event::ChannelClosed::user_channel_id`]: events::Event::ChannelClosed::user_channel_id
- pub fn accept_inbound_channel_from_trusted_peer_0conf(&self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, user_channel_id: u64) -> Result<(), APIError> {
+ pub fn accept_inbound_channel_from_trusted_peer_0conf(&self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, user_channel_id: u128) -> Result<(), APIError> {
self.do_accept_inbound_channel(temporary_channel_id, counterparty_node_id, true, user_channel_id)
}
- fn do_accept_inbound_channel(&self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, accept_0conf: bool, user_channel_id: u64) -> Result<(), APIError> {
+ fn do_accept_inbound_channel(&self, temporary_channel_id: &[u8; 32], counterparty_node_id: &PublicKey, accept_0conf: bool, user_channel_id: u128) -> Result<(), APIError> {
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
- match channel_state.by_id.entry(temporary_channel_id.clone()) {
- hash_map::Entry::Occupied(mut channel) => {
- if !channel.get().inbound_is_awaiting_accept() {
- return Err(APIError::APIMisuseError { err: "The channel isn't currently awaiting to be accepted.".to_owned() });
- }
- if *counterparty_node_id != channel.get().get_counterparty_node_id() {
- return Err(APIError::APIMisuseError { err: "The passed counterparty_node_id doesn't match the channel's counterparty node_id".to_owned() });
- }
- if accept_0conf {
- channel.get_mut().set_0conf();
- } else if channel.get().get_channel_type().requires_zero_conf() {
- let send_msg_err_event = events::MessageSendEvent::HandleError {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(temporary_channel_id.clone()) {
+ hash_map::Entry::Occupied(mut channel) => {
+ if !channel.get().inbound_is_awaiting_accept() {
+ return Err(APIError::APIMisuseError { err: "The channel isn't currently awaiting to be accepted.".to_owned() });
+ }
+ if *counterparty_node_id != channel.get().get_counterparty_node_id() {
+ return Err(APIError::APIMisuseError { err: "The passed counterparty_node_id doesn't match the channel's counterparty node_id".to_owned() });
+ }
+ if accept_0conf {
+ channel.get_mut().set_0conf();
+ } else if channel.get().get_channel_type().requires_zero_conf() {
+ let send_msg_err_event = events::MessageSendEvent::HandleError {
+ node_id: channel.get().get_counterparty_node_id(),
+ action: msgs::ErrorAction::SendErrorMessage{
+ msg: msgs::ErrorMessage { channel_id: temporary_channel_id.clone(), data: "No zero confirmation channels accepted".to_owned(), }
+ }
+ };
+ channel_state.pending_msg_events.push(send_msg_err_event);
+ let _ = remove_channel!(self, channel);
+ return Err(APIError::APIMisuseError { err: "Please use accept_inbound_channel_from_trusted_peer_0conf to accept channels with zero confirmations.".to_owned() });
+ }
+
+ channel_state.pending_msg_events.push(events::MessageSendEvent::SendAcceptChannel {
node_id: channel.get().get_counterparty_node_id(),
- action: msgs::ErrorAction::SendErrorMessage{
- msg: msgs::ErrorMessage { channel_id: temporary_channel_id.clone(), data: "No zero confirmation channels accepted".to_owned(), }
- }
- };
- channel_state.pending_msg_events.push(send_msg_err_event);
- let _ = remove_channel!(self, channel_state, channel);
- return Err(APIError::APIMisuseError { err: "Please use accept_inbound_channel_from_trusted_peer_0conf to accept channels with zero confirmations.".to_owned() });
+ msg: channel.get_mut().accept_inbound_channel(user_channel_id),
+ });
+ }
+ hash_map::Entry::Vacant(_) => {
+ return Err(APIError::ChannelUnavailable { err: "Can't accept a channel that doesn't exist".to_owned() });
}
-
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendAcceptChannel {
- node_id: channel.get().get_counterparty_node_id(),
- msg: channel.get_mut().accept_inbound_channel(user_channel_id),
- });
- }
- hash_map::Entry::Vacant(_) => {
- return Err(APIError::ChannelUnavailable { err: "Can't accept a channel that doesn't exist".to_owned() });
}
+ } else {
+ return Err(APIError::APIMisuseError { err: format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id) });
}
Ok(())
}
return Err(MsgHandleErrInternal::send_err_msg_no_close("No inbound channels accepted".to_owned(), msg.temporary_channel_id.clone()));
}
+ let mut random_bytes = [0u8; 16];
+ random_bytes.copy_from_slice(&self.keys_manager.get_secure_random_bytes()[..16]);
+ let user_channel_id = u128::from_be_bytes(random_bytes);
+
let outbound_scid_alias = self.create_and_insert_outbound_scid_alias();
let mut channel = match Channel::new_from_req(&self.fee_estimator, &self.keys_manager,
- counterparty_node_id.clone(), &their_features, msg, 0, &self.default_configuration,
+ counterparty_node_id.clone(), &their_features, msg, user_channel_id, &self.default_configuration,
self.best_block.read().unwrap().height(), &self.logger, outbound_scid_alias)
{
Err(e) => {
};
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
- match channel_state.by_id.entry(channel.channel_id()) {
- hash_map::Entry::Occupied(_) => {
- self.outbound_scid_aliases.lock().unwrap().remove(&outbound_scid_alias);
- return Err(MsgHandleErrInternal::send_err_msg_no_close("temporary_channel_id collision!".to_owned(), msg.temporary_channel_id.clone()))
- },
- hash_map::Entry::Vacant(entry) => {
- if !self.default_configuration.manually_accept_inbound_channels {
- if channel.get_channel_type().requires_zero_conf() {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("No zero confirmation channels accepted".to_owned(), msg.temporary_channel_id.clone()));
- }
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendAcceptChannel {
- node_id: counterparty_node_id.clone(),
- msg: channel.accept_inbound_channel(0),
- });
- } else {
- let mut pending_events = self.pending_events.lock().unwrap();
- pending_events.push(
- events::Event::OpenChannelRequest {
- temporary_channel_id: msg.temporary_channel_id.clone(),
- counterparty_node_id: counterparty_node_id.clone(),
- funding_satoshis: msg.funding_satoshis,
- push_msat: msg.push_msat,
- channel_type: channel.get_channel_type().clone(),
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(channel.channel_id()) {
+ hash_map::Entry::Occupied(_) => {
+ self.outbound_scid_aliases.lock().unwrap().remove(&outbound_scid_alias);
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("temporary_channel_id collision for the same peer!".to_owned(), msg.temporary_channel_id.clone()))
+ },
+ hash_map::Entry::Vacant(entry) => {
+ if !self.default_configuration.manually_accept_inbound_channels {
+ if channel.get_channel_type().requires_zero_conf() {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("No zero confirmation channels accepted".to_owned(), msg.temporary_channel_id.clone()));
}
- );
- }
+ channel_state.pending_msg_events.push(events::MessageSendEvent::SendAcceptChannel {
+ node_id: counterparty_node_id.clone(),
+ msg: channel.accept_inbound_channel(user_channel_id),
+ });
+ } else {
+ let mut pending_events = self.pending_events.lock().unwrap();
+ pending_events.push(
+ events::Event::OpenChannelRequest {
+ temporary_channel_id: msg.temporary_channel_id.clone(),
+ counterparty_node_id: counterparty_node_id.clone(),
+ funding_satoshis: msg.funding_satoshis,
+ push_msat: msg.push_msat,
+ channel_type: channel.get_channel_type().clone(),
+ }
+ );
+ }
- entry.insert(channel);
+ entry.insert(channel);
+ }
}
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.temporary_channel_id.clone()))
}
Ok(())
}
fn internal_accept_channel(&self, counterparty_node_id: &PublicKey, their_features: InitFeatures, msg: &msgs::AcceptChannel) -> Result<(), MsgHandleErrInternal> {
let (value, output_script, user_id) = {
- let mut channel_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_lock;
- match channel_state.by_id.entry(msg.temporary_channel_id) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.temporary_channel_id));
- }
- try_chan_entry!(self, chan.get_mut().accept_channel(&msg, &self.default_configuration.peer_channel_config_limits, &their_features), channel_state, chan);
- (chan.get().get_value_satoshis(), chan.get().get_funding_redeemscript().to_v0_p2wsh(), chan.get().get_user_id())
- },
- hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.temporary_channel_id))
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.temporary_channel_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.temporary_channel_id));
+ }
+ try_chan_entry!(self, chan.get_mut().accept_channel(&msg, &self.default_configuration.channel_handshake_limits, &their_features), chan);
+ (chan.get().get_value_satoshis(), chan.get().get_funding_redeemscript().to_v0_p2wsh(), chan.get().get_user_id())
+ },
+ hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.temporary_channel_id))
+ }
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.temporary_channel_id))
}
};
let mut pending_events = self.pending_events.lock().unwrap();
}
fn internal_funding_created(&self, counterparty_node_id: &PublicKey, msg: &msgs::FundingCreated) -> Result<(), MsgHandleErrInternal> {
+ let mut channel_state_lock = self.channel_state.lock().unwrap();
+ let channel_state = &mut *channel_state_lock;
+ let per_peer_state = self.per_peer_state.read().unwrap();
let ((funding_msg, monitor, mut channel_ready), mut chan) = {
let best_block = *self.best_block.read().unwrap();
- let mut channel_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_lock;
- match channel_state.by_id.entry(msg.temporary_channel_id.clone()) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.temporary_channel_id));
- }
- (try_chan_entry!(self, chan.get_mut().funding_created(msg, best_block, &self.logger), channel_state, chan), chan.remove())
- },
- hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.temporary_channel_id))
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.temporary_channel_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.temporary_channel_id));
+ }
+ (try_chan_entry!(self, chan.get_mut().funding_created(msg, best_block, &self.keys_manager, &self.logger), chan), chan.remove())
+ },
+ hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.temporary_channel_id))
+ }
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.temporary_channel_id))
}
};
- // Because we have exclusive ownership of the channel here we can release the channel_state
+ // Because we have exclusive ownership of the channel here we can release the peer_state
// lock before watch_channel
- if let Err(e) = self.chain_monitor.watch_channel(monitor.get_funding_txo().0, monitor) {
- match e {
- ChannelMonitorUpdateErr::PermanentFailure => {
- // Note that we reply with the new channel_id in error messages if we gave up on the
- // channel, not the temporary_channel_id. This is compatible with ourselves, but the
- // spec is somewhat ambiguous here. Not a huge deal since we'll send error messages for
- // any messages referencing a previously-closed channel anyway.
- // We do not do a force-close here as that would generate a monitor update for
- // a monitor that we didn't manage to store (and that we don't care about - we
- // don't respond with the funding_signed so the channel can never go on chain).
- let (_monitor_update, failed_htlcs) = chan.force_shutdown(true);
- assert!(failed_htlcs.is_empty());
- return Err(MsgHandleErrInternal::send_err_msg_no_close("ChannelMonitor storage failure".to_owned(), funding_msg.channel_id));
- },
- ChannelMonitorUpdateErr::TemporaryFailure => {
- // There's no problem signing a counterparty's funding transaction if our monitor
- // hasn't persisted to disk yet - we can't lose money on a transaction that we haven't
- // accepted payment from yet. We do, however, need to wait to send our channel_ready
- // until we have persisted our monitor.
- chan.monitor_update_failed(false, false, channel_ready.is_some(), Vec::new(), Vec::new(), Vec::new());
- channel_ready = None; // Don't send the channel_ready now
- },
- }
+ match self.chain_monitor.watch_channel(monitor.get_funding_txo().0, monitor) {
+ ChannelMonitorUpdateStatus::Completed => {},
+ ChannelMonitorUpdateStatus::PermanentFailure => {
+ // Note that we reply with the new channel_id in error messages if we gave up on the
+ // channel, not the temporary_channel_id. This is compatible with ourselves, but the
+ // spec is somewhat ambiguous here. Not a huge deal since we'll send error messages for
+ // any messages referencing a previously-closed channel anyway.
+ // We do not propagate the monitor update to the user as it would be for a monitor
+ // that we didn't manage to store (and that we don't care about - we don't respond
+ // with the funding_signed so the channel can never go on chain).
+ let (_monitor_update, failed_htlcs) = chan.force_shutdown(false);
+ assert!(failed_htlcs.is_empty());
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("ChannelMonitor storage failure".to_owned(), funding_msg.channel_id));
+ },
+ ChannelMonitorUpdateStatus::InProgress => {
+ // There's no problem signing a counterparty's funding transaction if our monitor
+ // hasn't persisted to disk yet - we can't lose money on a transaction that we haven't
+ // accepted payment from yet. We do, however, need to wait to send our channel_ready
+ // until we have persisted our monitor.
+ chan.monitor_updating_paused(false, false, channel_ready.is_some(), Vec::new(), Vec::new(), Vec::new());
+ channel_ready = None; // Don't send the channel_ready now
+ },
}
- let mut channel_state_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_state_lock;
- match channel_state.by_id.entry(funding_msg.channel_id) {
+ // It's safe to unwrap as we've held the `per_peer_state` read lock since checking that the
+ // peer exists, despite the inner PeerState potentially having no channels after removing
+ // the channel above.
+ let peer_state_mutex = per_peer_state.get(counterparty_node_id).unwrap();
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(funding_msg.channel_id) {
hash_map::Entry::Occupied(_) => {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Already had channel with the new channel_id".to_owned(), funding_msg.channel_id))
},
hash_map::Entry::Vacant(e) => {
+ let mut id_to_peer = self.id_to_peer.lock().unwrap();
+ match id_to_peer.entry(chan.channel_id()) {
+ hash_map::Entry::Occupied(_) => {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(
+ "The funding_created message had the same funding_txid as an existing channel - funding is not possible".to_owned(),
+ funding_msg.channel_id))
+ },
+ hash_map::Entry::Vacant(i_e) => {
+ i_e.insert(chan.get_counterparty_node_id());
+ }
+ }
channel_state.pending_msg_events.push(events::MessageSendEvent::SendFundingSigned {
node_id: counterparty_node_id.clone(),
msg: funding_msg,
});
if let Some(msg) = channel_ready {
- send_channel_ready!(channel_state.short_to_id, channel_state.pending_msg_events, chan, msg);
+ send_channel_ready!(self, channel_state.pending_msg_events, chan, msg);
}
e.insert(chan);
}
let best_block = *self.best_block.read().unwrap();
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
- match channel_state.by_id.entry(msg.channel_id) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
- }
- let (monitor, funding_tx, channel_ready) = match chan.get_mut().funding_signed(&msg, best_block, &self.logger) {
- Ok(update) => update,
- Err(e) => try_chan_entry!(self, Err(e), channel_state, chan),
- };
- if let Err(e) = self.chain_monitor.watch_channel(chan.get().get_funding_txo().unwrap(), monitor) {
- let mut res = handle_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::RevokeAndACKFirst, channel_ready.is_some(), OPTIONALLY_RESEND_FUNDING_LOCKED);
- if let Err(MsgHandleErrInternal { ref mut shutdown_finish, .. }) = res {
- // We weren't able to watch the channel to begin with, so no updates should be made on
- // it. Previously, full_stack_target found an (unreachable) panic when the
- // monitor update contained within `shutdown_finish` was applied.
- if let Some((ref mut shutdown_finish, _)) = shutdown_finish {
- shutdown_finish.0.take();
- }
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
- return res
- }
- if let Some(msg) = channel_ready {
- send_channel_ready!(channel_state.short_to_id, channel_state.pending_msg_events, chan.get(), msg);
- }
- funding_tx
- },
- hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ let (monitor, funding_tx, channel_ready) = match chan.get_mut().funding_signed(&msg, best_block, &self.keys_manager, &self.logger) {
+ Ok(update) => update,
+ Err(e) => try_chan_entry!(self, Err(e), chan),
+ };
+ match self.chain_monitor.watch_channel(chan.get().get_funding_txo().unwrap(), monitor) {
+ ChannelMonitorUpdateStatus::Completed => {},
+ e => {
+ let mut res = handle_monitor_update_res!(self, e, chan, RAACommitmentOrder::RevokeAndACKFirst, channel_ready.is_some(), OPTIONALLY_RESEND_FUNDING_LOCKED);
+ if let Err(MsgHandleErrInternal { ref mut shutdown_finish, .. }) = res {
+ // We weren't able to watch the channel to begin with, so no updates should be made on
+ // it. Previously, full_stack_target found an (unreachable) panic when the
+ // monitor update contained within `shutdown_finish` was applied.
+ if let Some((ref mut shutdown_finish, _)) = shutdown_finish {
+ shutdown_finish.0.take();
+ }
+ }
+ return res
+ },
+ }
+ if let Some(msg) = channel_ready {
+ send_channel_ready!(self, channel_state.pending_msg_events, chan.get(), msg);
+ }
+ funding_tx
+ },
+ hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ }
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id))
}
};
log_info!(self.logger, "Broadcasting funding transaction with txid {}", funding_tx.txid());
fn internal_channel_ready(&self, counterparty_node_id: &PublicKey, msg: &msgs::ChannelReady) -> Result<(), MsgHandleErrInternal> {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
- match channel_state.by_id.entry(msg.channel_id) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
- }
- let announcement_sigs_opt = try_chan_entry!(self, chan.get_mut().channel_ready(&msg, self.get_our_node_id(),
- self.genesis_hash.clone(), &self.best_block.read().unwrap(), &self.logger), channel_state, chan);
- if let Some(announcement_sigs) = announcement_sigs_opt {
- log_trace!(self.logger, "Sending announcement_signatures for channel {}", log_bytes!(chan.get().channel_id()));
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendAnnouncementSignatures {
- node_id: counterparty_node_id.clone(),
- msg: announcement_sigs,
- });
- } else if chan.get().is_usable() {
- // If we're sending an announcement_signatures, we'll send the (public)
- // channel_update after sending a channel_announcement when we receive our
- // counterparty's announcement_signatures. Thus, we only bother to send a
- // channel_update here if the channel is not public, i.e. we're not sending an
- // announcement_signatures.
- log_trace!(self.logger, "Sending private initial channel_update for our counterparty on channel {}", log_bytes!(chan.get().channel_id()));
- if let Ok(msg) = self.get_channel_update_for_unicast(chan.get()) {
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendChannelUpdate {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
+ }
+ let announcement_sigs_opt = try_chan_entry!(self, chan.get_mut().channel_ready(&msg, self.get_our_node_id(),
+ self.genesis_hash.clone(), &self.best_block.read().unwrap(), &self.logger), chan);
+ if let Some(announcement_sigs) = announcement_sigs_opt {
+ log_trace!(self.logger, "Sending announcement_signatures for channel {}", log_bytes!(chan.get().channel_id()));
+ channel_state.pending_msg_events.push(events::MessageSendEvent::SendAnnouncementSignatures {
node_id: counterparty_node_id.clone(),
- msg,
+ msg: announcement_sigs,
});
+ } else if chan.get().is_usable() {
+ // If we're sending an announcement_signatures, we'll send the (public)
+ // channel_update after sending a channel_announcement when we receive our
+ // counterparty's announcement_signatures. Thus, we only bother to send a
+ // channel_update here if the channel is not public, i.e. we're not sending an
+ // announcement_signatures.
+ log_trace!(self.logger, "Sending private initial channel_update for our counterparty on channel {}", log_bytes!(chan.get().channel_id()));
+ if let Ok(msg) = self.get_channel_update_for_unicast(chan.get()) {
+ channel_state.pending_msg_events.push(events::MessageSendEvent::SendChannelUpdate {
+ node_id: counterparty_node_id.clone(),
+ msg,
+ });
+ }
}
- }
- Ok(())
- },
- hash_map::Entry::Vacant(_) => Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+
+ emit_channel_ready_event!(self, chan.get_mut());
+
+ Ok(())
+ },
+ hash_map::Entry::Vacant(_) => Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ }
+ } else {
+ Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id))
}
}
let result: Result<(), _> = loop {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id.clone()) {
+ hash_map::Entry::Occupied(mut chan_entry) => {
+ if chan_entry.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
+ }
- match channel_state.by_id.entry(msg.channel_id.clone()) {
- hash_map::Entry::Occupied(mut chan_entry) => {
- if chan_entry.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
- }
-
- if !chan_entry.get().received_shutdown() {
- log_info!(self.logger, "Received a shutdown message from our counterparty for channel {}{}.",
- log_bytes!(msg.channel_id),
- if chan_entry.get().sent_shutdown() { " after we initiated shutdown" } else { "" });
- }
+ if !chan_entry.get().received_shutdown() {
+ log_info!(self.logger, "Received a shutdown message from our counterparty for channel {}{}.",
+ log_bytes!(msg.channel_id),
+ if chan_entry.get().sent_shutdown() { " after we initiated shutdown" } else { "" });
+ }
- let (shutdown, monitor_update, htlcs) = try_chan_entry!(self, chan_entry.get_mut().shutdown(&self.keys_manager, &their_features, &msg), channel_state, chan_entry);
- dropped_htlcs = htlcs;
+ let (shutdown, monitor_update, htlcs) = try_chan_entry!(self, chan_entry.get_mut().shutdown(&self.keys_manager, &their_features, &msg), chan_entry);
+ dropped_htlcs = htlcs;
- // Update the monitor with the shutdown script if necessary.
- if let Some(monitor_update) = monitor_update {
- if let Err(e) = self.chain_monitor.update_channel(chan_entry.get().get_funding_txo().unwrap(), monitor_update) {
+ // Update the monitor with the shutdown script if necessary.
+ if let Some(monitor_update) = monitor_update {
+ let update_res = self.chain_monitor.update_channel(chan_entry.get().get_funding_txo().unwrap(), monitor_update);
let (result, is_permanent) =
- handle_monitor_err!(self, e, channel_state.short_to_id, chan_entry.get_mut(), RAACommitmentOrder::CommitmentFirst, chan_entry.key(), NO_UPDATE);
+ handle_monitor_update_res!(self, update_res, chan_entry.get_mut(), RAACommitmentOrder::CommitmentFirst, chan_entry.key(), NO_UPDATE);
if is_permanent {
- remove_channel!(self, channel_state, chan_entry);
+ remove_channel!(self, chan_entry);
break result;
}
}
- }
- if let Some(msg) = shutdown {
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendShutdown {
- node_id: *counterparty_node_id,
- msg,
- });
- }
+ if let Some(msg) = shutdown {
+ channel_state.pending_msg_events.push(events::MessageSendEvent::SendShutdown {
+ node_id: *counterparty_node_id,
+ msg,
+ });
+ }
- break Ok(());
- },
- hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ break Ok(());
+ },
+ hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ }
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id))
}
};
for htlc_source in dropped_htlcs.drain(..) {
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_source.0, &htlc_source.1, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() });
+ let receiver = HTLCDestination::NextHopChannel { node_id: Some(counterparty_node_id.clone()), channel_id: msg.channel_id };
+ let reason = HTLCFailReason::from_failure_code(0x4000 | 8);
+ self.fail_htlc_backwards_internal(&htlc_source.0, &htlc_source.1, &reason, receiver);
}
let _ = handle_error!(self, result, *counterparty_node_id);
let (tx, chan_option) = {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
- match channel_state.by_id.entry(msg.channel_id.clone()) {
- hash_map::Entry::Occupied(mut chan_entry) => {
- if chan_entry.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
- }
- let (closing_signed, tx) = try_chan_entry!(self, chan_entry.get_mut().closing_signed(&self.fee_estimator, &msg), channel_state, chan_entry);
- if let Some(msg) = closing_signed {
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendClosingSigned {
- node_id: counterparty_node_id.clone(),
- msg,
- });
- }
- if tx.is_some() {
- // We're done with this channel, we've got a signed closing transaction and
- // will send the closing_signed back to the remote peer upon return. This
- // also implies there are no pending HTLCs left on the channel, so we can
- // fully delete it from tracking (the channel monitor is still around to
- // watch for old state broadcasts)!
- (tx, Some(remove_channel!(self, channel_state, chan_entry)))
- } else { (tx, None) }
- },
- hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id.clone()) {
+ hash_map::Entry::Occupied(mut chan_entry) => {
+ if chan_entry.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
+ }
+ let (closing_signed, tx) = try_chan_entry!(self, chan_entry.get_mut().closing_signed(&self.fee_estimator, &msg), chan_entry);
+ if let Some(msg) = closing_signed {
+ channel_state.pending_msg_events.push(events::MessageSendEvent::SendClosingSigned {
+ node_id: counterparty_node_id.clone(),
+ msg,
+ });
+ }
+ if tx.is_some() {
+ // We're done with this channel, we've got a signed closing transaction and
+ // will send the closing_signed back to the remote peer upon return. This
+ // also implies there are no pending HTLCs left on the channel, so we can
+ // fully delete it from tracking (the channel monitor is still around to
+ // watch for old state broadcasts)!
+ (tx, Some(remove_channel!(self, chan_entry)))
+ } else { (tx, None) }
+ },
+ hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ }
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id))
}
};
if let Some(broadcast_tx) = tx {
//encrypted with the same key. It's 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 = &mut *channel_state_lock;
-
- match channel_state.by_id.entry(msg.channel_id) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
- }
-
- let create_pending_htlc_status = |chan: &Channel<Signer>, pending_forward_info: PendingHTLCStatus, error_code: u16| {
- // If the update_add is completely bogus, the call will Err and we will close,
- // but if we've sent a shutdown and they haven't acknowledged it yet, we just
- // want to reject the new HTLC and fail it backwards instead of forwarding.
- match pending_forward_info {
- PendingHTLCStatus::Forward(PendingHTLCInfo { ref incoming_shared_secret, .. }) => {
- let reason = if (error_code & 0x1000) != 0 {
- let (real_code, error_data) = self.get_htlc_inbound_temp_fail_err_and_data(error_code, chan);
- onion_utils::build_first_hop_failure_packet(incoming_shared_secret, real_code, &error_data)
- } else {
- onion_utils::build_first_hop_failure_packet(incoming_shared_secret, error_code, &[])
- };
- let msg = msgs::UpdateFailHTLC {
- channel_id: msg.channel_id,
- htlc_id: msg.htlc_id,
- reason
- };
- PendingHTLCStatus::Fail(HTLCFailureMsg::Relay(msg))
- },
- _ => pending_forward_info
+ let pending_forward_info = self.decode_update_add_htlc_onion(msg);
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
- };
- try_chan_entry!(self, chan.get_mut().update_add_htlc(&msg, pending_forward_info, create_pending_htlc_status, &self.logger), channel_state, chan);
- },
- hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+
+ let create_pending_htlc_status = |chan: &Channel<<K::Target as SignerProvider>::Signer>, pending_forward_info: PendingHTLCStatus, error_code: u16| {
+ // If the update_add is completely bogus, the call will Err and we will close,
+ // but if we've sent a shutdown and they haven't acknowledged it yet, we just
+ // want to reject the new HTLC and fail it backwards instead of forwarding.
+ match pending_forward_info {
+ PendingHTLCStatus::Forward(PendingHTLCInfo { ref incoming_shared_secret, .. }) => {
+ let reason = if (error_code & 0x1000) != 0 {
+ let (real_code, error_data) = self.get_htlc_inbound_temp_fail_err_and_data(error_code, chan);
+ HTLCFailReason::reason(real_code, error_data)
+ } else {
+ HTLCFailReason::from_failure_code(error_code)
+ }.get_encrypted_failure_packet(incoming_shared_secret, &None);
+ let msg = msgs::UpdateFailHTLC {
+ channel_id: msg.channel_id,
+ htlc_id: msg.htlc_id,
+ reason
+ };
+ PendingHTLCStatus::Fail(HTLCFailureMsg::Relay(msg))
+ },
+ _ => pending_forward_info
+ }
+ };
+ try_chan_entry!(self, chan.get_mut().update_add_htlc(&msg, pending_forward_info, create_pending_htlc_status, &self.logger), chan);
+ },
+ hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ }
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id))
}
Ok(())
}
fn internal_update_fulfill_htlc(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) -> Result<(), MsgHandleErrInternal> {
- let mut channel_lock = self.channel_state.lock().unwrap();
+ let channel_lock = self.channel_state.lock().unwrap();
let (htlc_source, forwarded_htlc_value) = {
- let channel_state = &mut *channel_lock;
- match channel_state.by_id.entry(msg.channel_id) {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let None = per_peer_state.get(counterparty_node_id) {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id));
+ }
+ let peer_state_mutex = per_peer_state.get(counterparty_node_id).unwrap();
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id) {
hash_map::Entry::Occupied(mut chan) => {
if chan.get().get_counterparty_node_id() != *counterparty_node_id {
return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
}
- try_chan_entry!(self, chan.get_mut().update_fulfill_htlc(&msg), channel_state, chan)
+ try_chan_entry!(self, chan.get_mut().update_fulfill_htlc(&msg), chan)
},
hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
}
}
fn internal_update_fail_htlc(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) -> Result<(), MsgHandleErrInternal> {
- let mut channel_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_lock;
- match channel_state.by_id.entry(msg.channel_id) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
- }
- try_chan_entry!(self, chan.get_mut().update_fail_htlc(&msg, HTLCFailReason::LightningError { err: msg.reason.clone() }), channel_state, chan);
- },
- hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
+ }
+ try_chan_entry!(self, chan.get_mut().update_fail_htlc(&msg, HTLCFailReason::from_msg(msg)), chan);
+ },
+ hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ }
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id));
}
Ok(())
}
fn internal_update_fail_malformed_htlc(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) -> Result<(), MsgHandleErrInternal> {
- let mut channel_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_lock;
- match channel_state.by_id.entry(msg.channel_id) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
- }
- if (msg.failure_code & 0x8000) == 0 {
- let chan_err: ChannelError = ChannelError::Close("Got update_fail_malformed_htlc with BADONION not set".to_owned());
- try_chan_entry!(self, Err(chan_err), channel_state, chan);
- }
- try_chan_entry!(self, chan.get_mut().update_fail_malformed_htlc(&msg, HTLCFailReason::Reason { failure_code: msg.failure_code, data: Vec::new() }), channel_state, chan);
- Ok(())
- },
- hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
+ }
+ if (msg.failure_code & 0x8000) == 0 {
+ let chan_err: ChannelError = ChannelError::Close("Got update_fail_malformed_htlc with BADONION not set".to_owned());
+ try_chan_entry!(self, Err(chan_err), chan);
+ }
+ try_chan_entry!(self, chan.get_mut().update_fail_malformed_htlc(&msg, HTLCFailReason::reason(msg.failure_code, msg.sha256_of_onion.to_vec())), chan);
+ Ok(())
+ },
+ hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ }
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id))
}
}
fn internal_commitment_signed(&self, counterparty_node_id: &PublicKey, msg: &msgs::CommitmentSigned) -> Result<(), MsgHandleErrInternal> {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
- match channel_state.by_id.entry(msg.channel_id) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
- }
- let (revoke_and_ack, commitment_signed, monitor_update) =
- match chan.get_mut().commitment_signed(&msg, &self.logger) {
- Err((None, e)) => try_chan_entry!(self, Err(e), channel_state, chan),
- Err((Some(update), e)) => {
- assert!(chan.get().is_awaiting_monitor_update());
- let _ = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), update);
- try_chan_entry!(self, Err(e), channel_state, chan);
- unreachable!();
- },
- Ok(res) => res
- };
- if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update) {
- return_monitor_err!(self, e, channel_state, chan, RAACommitmentOrder::RevokeAndACKFirst, true, commitment_signed.is_some());
- }
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendRevokeAndACK {
- node_id: counterparty_node_id.clone(),
- msg: revoke_and_ack,
- });
- if let Some(msg) = commitment_signed {
- channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
+ }
+ let (revoke_and_ack, commitment_signed, monitor_update) =
+ match chan.get_mut().commitment_signed(&msg, &self.logger) {
+ Err((None, e)) => try_chan_entry!(self, Err(e), chan),
+ Err((Some(update), e)) => {
+ assert!(chan.get().is_awaiting_monitor_update());
+ let _ = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), update);
+ try_chan_entry!(self, Err(e), chan);
+ unreachable!();
+ },
+ Ok(res) => res
+ };
+ let update_res = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), monitor_update);
+ if let Err(e) = handle_monitor_update_res!(self, update_res, chan, RAACommitmentOrder::RevokeAndACKFirst, true, commitment_signed.is_some()) {
+ return Err(e);
+ }
+
+ channel_state.pending_msg_events.push(events::MessageSendEvent::SendRevokeAndACK {
node_id: counterparty_node_id.clone(),
- updates: msgs::CommitmentUpdate {
- update_add_htlcs: Vec::new(),
- update_fulfill_htlcs: Vec::new(),
- update_fail_htlcs: Vec::new(),
- update_fail_malformed_htlcs: Vec::new(),
- update_fee: None,
- commitment_signed: msg,
- },
+ msg: revoke_and_ack,
});
- }
- Ok(())
- },
- hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ if let Some(msg) = commitment_signed {
+ channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
+ node_id: counterparty_node_id.clone(),
+ updates: msgs::CommitmentUpdate {
+ update_add_htlcs: Vec::new(),
+ update_fulfill_htlcs: Vec::new(),
+ update_fail_htlcs: Vec::new(),
+ update_fail_malformed_htlcs: Vec::new(),
+ update_fee: None,
+ commitment_signed: msg,
+ },
+ });
+ }
+ Ok(())
+ },
+ hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ }
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id))
}
}
#[inline]
- fn forward_htlcs(&self, per_source_pending_forwards: &mut [(u64, OutPoint, Vec<(PendingHTLCInfo, u64)>)]) {
- for &mut (prev_short_channel_id, prev_funding_outpoint, ref mut pending_forwards) in per_source_pending_forwards {
+ fn forward_htlcs(&self, per_source_pending_forwards: &mut [(u64, OutPoint, u128, Vec<(PendingHTLCInfo, u64)>)]) {
+ for &mut (prev_short_channel_id, prev_funding_outpoint, prev_user_channel_id, ref mut pending_forwards) in per_source_pending_forwards {
let mut forward_event = None;
+ let mut new_intercept_events = Vec::new();
+ let mut failed_intercept_forwards = Vec::new();
if !pending_forwards.is_empty() {
- let mut channel_state = self.channel_state.lock().unwrap();
- if channel_state.forward_htlcs.is_empty() {
- forward_event = Some(Duration::from_millis(MIN_HTLC_RELAY_HOLDING_CELL_MILLIS))
- }
for (forward_info, prev_htlc_id) in pending_forwards.drain(..) {
- match channel_state.forward_htlcs.entry(match forward_info.routing {
- PendingHTLCRouting::Forward { short_channel_id, .. } => short_channel_id,
- PendingHTLCRouting::Receive { .. } => 0,
- PendingHTLCRouting::ReceiveKeysend { .. } => 0,
- }) {
+ let scid = match forward_info.routing {
+ PendingHTLCRouting::Forward { short_channel_id, .. } => short_channel_id,
+ PendingHTLCRouting::Receive { .. } => 0,
+ PendingHTLCRouting::ReceiveKeysend { .. } => 0,
+ };
+ // Pull this now to avoid introducing a lock order with `forward_htlcs`.
+ let is_our_scid = self.short_to_chan_info.read().unwrap().contains_key(&scid);
+
+ let mut forward_htlcs = self.forward_htlcs.lock().unwrap();
+ let forward_htlcs_empty = forward_htlcs.is_empty();
+ match forward_htlcs.entry(scid) {
hash_map::Entry::Occupied(mut entry) => {
- entry.get_mut().push(HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_funding_outpoint,
- prev_htlc_id, forward_info });
+ entry.get_mut().push(HTLCForwardInfo::AddHTLC(PendingAddHTLCInfo {
+ prev_short_channel_id, prev_funding_outpoint, prev_htlc_id, prev_user_channel_id, forward_info }));
},
hash_map::Entry::Vacant(entry) => {
- entry.insert(vec!(HTLCForwardInfo::AddHTLC { prev_short_channel_id, prev_funding_outpoint,
- prev_htlc_id, forward_info }));
+ if !is_our_scid && forward_info.incoming_amt_msat.is_some() &&
+ fake_scid::is_valid_intercept(&self.fake_scid_rand_bytes, scid, &self.genesis_hash)
+ {
+ let intercept_id = InterceptId(Sha256::hash(&forward_info.incoming_shared_secret).into_inner());
+ let mut pending_intercepts = self.pending_intercepted_htlcs.lock().unwrap();
+ match pending_intercepts.entry(intercept_id) {
+ hash_map::Entry::Vacant(entry) => {
+ new_intercept_events.push(events::Event::HTLCIntercepted {
+ requested_next_hop_scid: scid,
+ payment_hash: forward_info.payment_hash,
+ inbound_amount_msat: forward_info.incoming_amt_msat.unwrap(),
+ expected_outbound_amount_msat: forward_info.outgoing_amt_msat,
+ intercept_id
+ });
+ entry.insert(PendingAddHTLCInfo {
+ prev_short_channel_id, prev_funding_outpoint, prev_htlc_id, prev_user_channel_id, forward_info });
+ },
+ hash_map::Entry::Occupied(_) => {
+ log_info!(self.logger, "Failed to forward incoming HTLC: detected duplicate intercepted payment over short channel id {}", scid);
+ let htlc_source = HTLCSource::PreviousHopData(HTLCPreviousHopData {
+ short_channel_id: prev_short_channel_id,
+ outpoint: prev_funding_outpoint,
+ htlc_id: prev_htlc_id,
+ incoming_packet_shared_secret: forward_info.incoming_shared_secret,
+ phantom_shared_secret: None,
+ });
+
+ failed_intercept_forwards.push((htlc_source, forward_info.payment_hash,
+ HTLCFailReason::from_failure_code(0x4000 | 10),
+ HTLCDestination::InvalidForward { requested_forward_scid: scid },
+ ));
+ }
+ }
+ } else {
+ // We don't want to generate a PendingHTLCsForwardable event if only intercepted
+ // payments are being processed.
+ if forward_htlcs_empty {
+ forward_event = Some(Duration::from_millis(MIN_HTLC_RELAY_HOLDING_CELL_MILLIS));
+ }
+ entry.insert(vec!(HTLCForwardInfo::AddHTLC(PendingAddHTLCInfo {
+ prev_short_channel_id, prev_funding_outpoint, prev_htlc_id, prev_user_channel_id, forward_info })));
+ }
}
}
}
}
+
+ for (htlc_source, payment_hash, failure_reason, destination) in failed_intercept_forwards.drain(..) {
+ self.fail_htlc_backwards_internal(&htlc_source, &payment_hash, &failure_reason, destination);
+ }
+
+ if !new_intercept_events.is_empty() {
+ let mut events = self.pending_events.lock().unwrap();
+ events.append(&mut new_intercept_events);
+ }
+
match forward_event {
Some(time) => {
let mut pending_events = self.pending_events.lock().unwrap();
let res = loop {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
- match channel_state.by_id.entry(msg.channel_id) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- break Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
- }
- let was_frozen_for_monitor = chan.get().is_awaiting_monitor_update();
- let raa_updates = break_chan_entry!(self,
- chan.get_mut().revoke_and_ack(&msg, &self.logger), channel_state, chan);
- htlcs_to_fail = raa_updates.holding_cell_failed_htlcs;
- if let Err(e) = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), raa_updates.monitor_update) {
- if was_frozen_for_monitor {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ break Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
+ }
+ let was_paused_for_mon_update = chan.get().is_awaiting_monitor_update();
+ let raa_updates = break_chan_entry!(self,
+ chan.get_mut().revoke_and_ack(&msg, &self.logger), chan);
+ htlcs_to_fail = raa_updates.holding_cell_failed_htlcs;
+ let update_res = self.chain_monitor.update_channel(chan.get().get_funding_txo().unwrap(), raa_updates.monitor_update);
+ if was_paused_for_mon_update {
+ assert!(update_res != ChannelMonitorUpdateStatus::Completed);
assert!(raa_updates.commitment_update.is_none());
assert!(raa_updates.accepted_htlcs.is_empty());
assert!(raa_updates.failed_htlcs.is_empty());
assert!(raa_updates.finalized_claimed_htlcs.is_empty());
- break Err(MsgHandleErrInternal::ignore_no_close("Previous monitor update failure prevented responses to RAA".to_owned()));
- } else {
- if let Err(e) = handle_monitor_err!(self, e, channel_state, chan,
+ break Err(MsgHandleErrInternal::ignore_no_close("Existing pending monitor update prevented responses to RAA".to_owned()));
+ }
+ if update_res != ChannelMonitorUpdateStatus::Completed {
+ if let Err(e) = handle_monitor_update_res!(self, update_res, chan,
RAACommitmentOrder::CommitmentFirst, false,
raa_updates.commitment_update.is_some(), false,
raa_updates.accepted_htlcs, raa_updates.failed_htlcs,
break Err(e);
} else { unreachable!(); }
}
- }
- if let Some(updates) = raa_updates.commitment_update {
- channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: counterparty_node_id.clone(),
- updates,
- });
- }
- break Ok((raa_updates.accepted_htlcs, raa_updates.failed_htlcs,
- raa_updates.finalized_claimed_htlcs,
- chan.get().get_short_channel_id()
- .unwrap_or(chan.get().outbound_scid_alias()),
- chan.get().get_funding_txo().unwrap()))
- },
- hash_map::Entry::Vacant(_) => break Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ if let Some(updates) = raa_updates.commitment_update {
+ channel_state.pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
+ node_id: counterparty_node_id.clone(),
+ updates,
+ });
+ }
+ break Ok((raa_updates.accepted_htlcs, raa_updates.failed_htlcs,
+ raa_updates.finalized_claimed_htlcs,
+ chan.get().get_short_channel_id()
+ .unwrap_or(chan.get().outbound_scid_alias()),
+ chan.get().get_funding_txo().unwrap(),
+ chan.get().get_user_id()))
+ },
+ hash_map::Entry::Vacant(_) => break Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ }
+ } else {
+ break Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id))
}
};
- self.fail_holding_cell_htlcs(htlcs_to_fail, msg.channel_id);
+ self.fail_holding_cell_htlcs(htlcs_to_fail, msg.channel_id, counterparty_node_id);
match res {
Ok((pending_forwards, mut pending_failures, finalized_claim_htlcs,
- short_channel_id, channel_outpoint)) =>
+ short_channel_id, channel_outpoint, user_channel_id)) =>
{
for failure in pending_failures.drain(..) {
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), failure.0, &failure.1, failure.2);
+ let receiver = HTLCDestination::NextHopChannel { node_id: Some(*counterparty_node_id), channel_id: channel_outpoint.to_channel_id() };
+ self.fail_htlc_backwards_internal(&failure.0, &failure.1, &failure.2, receiver);
}
- self.forward_htlcs(&mut [(short_channel_id, channel_outpoint, pending_forwards)]);
+ self.forward_htlcs(&mut [(short_channel_id, channel_outpoint, user_channel_id, pending_forwards)]);
self.finalize_claims(finalized_claim_htlcs);
Ok(())
},
}
fn internal_update_fee(&self, counterparty_node_id: &PublicKey, msg: &msgs::UpdateFee) -> Result<(), MsgHandleErrInternal> {
- let mut channel_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_lock;
- match channel_state.by_id.entry(msg.channel_id) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
- }
- try_chan_entry!(self, chan.get_mut().update_fee(&self.fee_estimator, &msg), channel_state, chan);
- },
- hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
+ }
+ try_chan_entry!(self, chan.get_mut().update_fee(&self.fee_estimator, &msg, &self.logger), chan);
+ },
+ hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ }
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id));
}
Ok(())
}
fn internal_announcement_signatures(&self, counterparty_node_id: &PublicKey, msg: &msgs::AnnouncementSignatures) -> Result<(), MsgHandleErrInternal> {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
+ }
+ if !chan.get().is_usable() {
+ return Err(MsgHandleErrInternal::from_no_close(LightningError{err: "Got an announcement_signatures before we were ready for it".to_owned(), action: msgs::ErrorAction::IgnoreError}));
+ }
- match channel_state.by_id.entry(msg.channel_id) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
- }
- if !chan.get().is_usable() {
- return Err(MsgHandleErrInternal::from_no_close(LightningError{err: "Got an announcement_signatures before we were ready for it".to_owned(), action: msgs::ErrorAction::IgnoreError}));
- }
-
- channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelAnnouncement {
- msg: try_chan_entry!(self, chan.get_mut().announcement_signatures(
- self.get_our_node_id(), self.genesis_hash.clone(), self.best_block.read().unwrap().height(), msg), channel_state, chan),
- // Note that announcement_signatures fails if the channel cannot be announced,
- // so get_channel_update_for_broadcast will never fail by the time we get here.
- update_msg: self.get_channel_update_for_broadcast(chan.get()).unwrap(),
- });
- },
- hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ channel_state.pending_msg_events.push(events::MessageSendEvent::BroadcastChannelAnnouncement {
+ msg: try_chan_entry!(self, chan.get_mut().announcement_signatures(
+ self.get_our_node_id(), self.genesis_hash.clone(), self.best_block.read().unwrap().height(), msg), chan),
+ // Note that announcement_signatures fails if the channel cannot be announced,
+ // so get_channel_update_for_broadcast will never fail by the time we get here.
+ update_msg: self.get_channel_update_for_broadcast(chan.get()).unwrap(),
+ });
+ },
+ hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ }
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id));
}
Ok(())
}
/// Returns ShouldPersist if anything changed, otherwise either SkipPersist or an Err.
fn internal_channel_update(&self, counterparty_node_id: &PublicKey, msg: &msgs::ChannelUpdate) -> Result<NotifyOption, MsgHandleErrInternal> {
- let mut channel_state_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_state_lock;
- let chan_id = match channel_state.short_to_id.get(&msg.contents.short_channel_id) {
- Some(chan_id) => chan_id.clone(),
+ let (chan_counterparty_node_id, chan_id) = match self.short_to_chan_info.read().unwrap().get(&msg.contents.short_channel_id) {
+ Some((cp_id, chan_id)) => (cp_id.clone(), chan_id.clone()),
None => {
// It's not a local channel
return Ok(NotifyOption::SkipPersist)
}
};
- match channel_state.by_id.entry(chan_id) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- if chan.get().should_announce() {
- // If the announcement is about a channel of ours which is public, some
- // other peer may simply be forwarding all its gossip to us. Don't provide
- // a scary-looking error message and return Ok instead.
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(&chan_counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(chan_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ if chan.get().should_announce() {
+ // If the announcement is about a channel of ours which is public, some
+ // other peer may simply be forwarding all its gossip to us. Don't provide
+ // a scary-looking error message and return Ok instead.
+ return Ok(NotifyOption::SkipPersist);
+ }
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a channel_update for a channel from the wrong node - it shouldn't know about our private channels!".to_owned(), chan_id));
+ }
+ let were_node_one = self.get_our_node_id().serialize()[..] < chan.get().get_counterparty_node_id().serialize()[..];
+ let msg_from_node_one = msg.contents.flags & 1 == 0;
+ if were_node_one == msg_from_node_one {
return Ok(NotifyOption::SkipPersist);
+ } else {
+ log_debug!(self.logger, "Received channel_update for channel {}.", log_bytes!(chan_id));
+ try_chan_entry!(self, chan.get_mut().channel_update(&msg), chan);
}
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a channel_update for a channel from the wrong node - it shouldn't know about our private channels!".to_owned(), chan_id));
- }
- let were_node_one = self.get_our_node_id().serialize()[..] < chan.get().get_counterparty_node_id().serialize()[..];
- let msg_from_node_one = msg.contents.flags & 1 == 0;
- if were_node_one == msg_from_node_one {
- return Ok(NotifyOption::SkipPersist);
- } else {
- try_chan_entry!(self, chan.get_mut().channel_update(&msg), channel_state, chan);
- }
- },
- hash_map::Entry::Vacant(_) => unreachable!()
+ },
+ hash_map::Entry::Vacant(_) => return Ok(NotifyOption::SkipPersist)
+ }
+ } else {
+ return Ok(NotifyOption::SkipPersist)
}
Ok(NotifyOption::DoPersist)
}
fn internal_channel_reestablish(&self, counterparty_node_id: &PublicKey, msg: &msgs::ChannelReestablish) -> Result<(), MsgHandleErrInternal> {
- let chan_restoration_res;
- let (htlcs_failed_forward, need_lnd_workaround) = {
+ let htlc_forwards;
+ let need_lnd_workaround = {
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
+ let per_peer_state = self.per_peer_state.read().unwrap();
- match channel_state.by_id.entry(msg.channel_id) {
- hash_map::Entry::Occupied(mut chan) => {
- if chan.get().get_counterparty_node_id() != *counterparty_node_id {
- return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
- }
- // Currently, we expect all holding cell update_adds to be dropped on peer
- // disconnect, so Channel's reestablish will never hand us any holding cell
- // freed HTLCs to fail backwards. If in the future we no longer drop pending
- // add-HTLCs on disconnect, we may be handed HTLCs to fail backwards here.
- let responses = try_chan_entry!(self, chan.get_mut().channel_reestablish(
- msg, &self.logger, self.our_network_pubkey.clone(), self.genesis_hash,
- &*self.best_block.read().unwrap()), channel_state, chan);
- let mut channel_update = None;
- if let Some(msg) = responses.shutdown_msg {
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendShutdown {
- node_id: counterparty_node_id.clone(),
- msg,
- });
- } else if chan.get().is_usable() {
- // If the channel is in a usable state (ie the channel is not being shut
- // down), send a unicast channel_update to our counterparty to make sure
- // they have the latest channel parameters.
- if let Ok(msg) = self.get_channel_update_for_unicast(chan.get()) {
- channel_update = Some(events::MessageSendEvent::SendChannelUpdate {
- node_id: chan.get().get_counterparty_node_id(),
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ match peer_state.channel_by_id.entry(msg.channel_id) {
+ hash_map::Entry::Occupied(mut chan) => {
+ if chan.get().get_counterparty_node_id() != *counterparty_node_id {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close("Got a message for a channel from the wrong node!".to_owned(), msg.channel_id));
+ }
+ // Currently, we expect all holding cell update_adds to be dropped on peer
+ // disconnect, so Channel's reestablish will never hand us any holding cell
+ // freed HTLCs to fail backwards. If in the future we no longer drop pending
+ // add-HTLCs on disconnect, we may be handed HTLCs to fail backwards here.
+ let responses = try_chan_entry!(self, chan.get_mut().channel_reestablish(
+ msg, &self.logger, self.our_network_pubkey.clone(), self.genesis_hash,
+ &*self.best_block.read().unwrap()), chan);
+ let mut channel_update = None;
+ if let Some(msg) = responses.shutdown_msg {
+ channel_state.pending_msg_events.push(events::MessageSendEvent::SendShutdown {
+ node_id: counterparty_node_id.clone(),
msg,
});
+ } else if chan.get().is_usable() {
+ // If the channel is in a usable state (ie the channel is not being shut
+ // down), send a unicast channel_update to our counterparty to make sure
+ // they have the latest channel parameters.
+ if let Ok(msg) = self.get_channel_update_for_unicast(chan.get()) {
+ channel_update = Some(events::MessageSendEvent::SendChannelUpdate {
+ node_id: chan.get().get_counterparty_node_id(),
+ msg,
+ });
+ }
}
- }
- let need_lnd_workaround = chan.get_mut().workaround_lnd_bug_4006.take();
- chan_restoration_res = handle_chan_restoration_locked!(
- self, channel_state_lock, channel_state, chan, responses.raa, responses.commitment_update, responses.order,
- responses.mon_update, Vec::new(), None, responses.channel_ready, responses.announcement_sigs);
- if let Some(upd) = channel_update {
- channel_state.pending_msg_events.push(upd);
- }
- (responses.holding_cell_failed_htlcs, need_lnd_workaround)
- },
- hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ let need_lnd_workaround = chan.get_mut().workaround_lnd_bug_4006.take();
+ htlc_forwards = self.handle_channel_resumption(
+ &mut channel_state.pending_msg_events, chan.get_mut(), responses.raa, responses.commitment_update, responses.order,
+ Vec::new(), None, responses.channel_ready, responses.announcement_sigs);
+ if let Some(upd) = channel_update {
+ channel_state.pending_msg_events.push(upd);
+ }
+ need_lnd_workaround
+ },
+ hash_map::Entry::Vacant(_) => return Err(MsgHandleErrInternal::send_err_msg_no_close("Failed to find corresponding channel".to_owned(), msg.channel_id))
+ }
+ } else {
+ return Err(MsgHandleErrInternal::send_err_msg_no_close(format!("Can't find a peer with a node_id matching the passed counterparty_node_id {}", counterparty_node_id), msg.channel_id));
}
};
- post_handle_chan_restoration!(self, chan_restoration_res);
- self.fail_holding_cell_htlcs(htlcs_failed_forward, msg.channel_id);
+
+ if let Some(forwards) = htlc_forwards {
+ self.forward_htlcs(&mut [forwards][..]);
+ }
if let Some(channel_ready_msg) = need_lnd_workaround {
self.internal_channel_ready(counterparty_node_id, &channel_ready_msg)?;
let mut failed_channels = Vec::new();
let mut pending_monitor_events = self.chain_monitor.release_pending_monitor_events();
let has_pending_monitor_events = !pending_monitor_events.is_empty();
- for (funding_outpoint, mut monitor_events) in pending_monitor_events.drain(..) {
+ for (funding_outpoint, mut monitor_events, counterparty_node_id) in pending_monitor_events.drain(..) {
for monitor_event in monitor_events.drain(..) {
match monitor_event {
MonitorEvent::HTLCEvent(htlc_update) => {
self.claim_funds_internal(self.channel_state.lock().unwrap(), htlc_update.source, preimage, htlc_update.htlc_value_satoshis.map(|v| v * 1000), true, funding_outpoint.to_channel_id());
} else {
log_trace!(self.logger, "Failing HTLC with hash {} from our monitor", log_bytes!(htlc_update.payment_hash.0));
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), htlc_update.source, &htlc_update.payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() });
+ let receiver = HTLCDestination::NextHopChannel { node_id: counterparty_node_id, channel_id: funding_outpoint.to_channel_id() };
+ let reason = HTLCFailReason::from_failure_code(0x4000 | 8);
+ self.fail_htlc_backwards_internal(&htlc_update.source, &htlc_update.payment_hash, &reason, receiver);
}
},
MonitorEvent::CommitmentTxConfirmed(funding_outpoint) |
MonitorEvent::UpdateFailed(funding_outpoint) => {
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
- let by_id = &mut channel_state.by_id;
- let pending_msg_events = &mut channel_state.pending_msg_events;
- if let hash_map::Entry::Occupied(chan_entry) = by_id.entry(funding_outpoint.to_channel_id()) {
- let mut chan = remove_channel!(self, channel_state, chan_entry);
- failed_channels.push(chan.force_shutdown(false));
- if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
- pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: update
- });
+ let counterparty_node_id_opt = match counterparty_node_id {
+ Some(cp_id) => Some(cp_id),
+ None => {
+ // TODO: Once we can rely on the counterparty_node_id from the
+ // monitor event, this and the id_to_peer map should be removed.
+ let id_to_peer = self.id_to_peer.lock().unwrap();
+ id_to_peer.get(&funding_outpoint.to_channel_id()).cloned()
+ }
+ };
+ if let Some(counterparty_node_id) = counterparty_node_id_opt {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(&counterparty_node_id) {
+ let pending_msg_events = &mut channel_state.pending_msg_events;
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ if let hash_map::Entry::Occupied(chan_entry) = peer_state.channel_by_id.entry(funding_outpoint.to_channel_id()) {
+ let mut chan = remove_channel!(self, chan_entry);
+ failed_channels.push(chan.force_shutdown(false));
+ if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
+ pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
+ msg: update
+ });
+ }
+ let reason = if let MonitorEvent::UpdateFailed(_) = monitor_event {
+ ClosureReason::ProcessingError { err: "Failed to persist ChannelMonitor update during chain sync".to_string() }
+ } else {
+ ClosureReason::CommitmentTxConfirmed
+ };
+ self.issue_channel_close_events(&chan, reason);
+ pending_msg_events.push(events::MessageSendEvent::HandleError {
+ node_id: chan.get_counterparty_node_id(),
+ action: msgs::ErrorAction::SendErrorMessage {
+ msg: msgs::ErrorMessage { channel_id: chan.channel_id(), data: "Channel force-closed".to_owned() }
+ },
+ });
+ }
}
- let reason = if let MonitorEvent::UpdateFailed(_) = monitor_event {
- ClosureReason::ProcessingError { err: "Failed to persist ChannelMonitor update during chain sync".to_string() }
- } else {
- ClosureReason::CommitmentTxConfirmed
- };
- self.issue_channel_close_events(&chan, reason);
- pending_msg_events.push(events::MessageSendEvent::HandleError {
- node_id: chan.get_counterparty_node_id(),
- action: msgs::ErrorAction::SendErrorMessage {
- msg: msgs::ErrorMessage { channel_id: chan.channel_id(), data: "Channel force-closed".to_owned() }
- },
- });
}
},
- MonitorEvent::UpdateCompleted { funding_txo, monitor_update_id } => {
- self.channel_monitor_updated(&funding_txo, monitor_update_id);
+ MonitorEvent::Completed { funding_txo, monitor_update_id } => {
+ self.channel_monitor_updated(&funding_txo, monitor_update_id, counterparty_node_id.as_ref());
},
}
}
/// Check the holding cell in each channel and free any pending HTLCs in them if possible.
/// Returns whether there were any updates such as if pending HTLCs were freed or a monitor
/// update was applied.
- ///
- /// This should only apply to HTLCs which were added to the holding cell because we were
- /// waiting on a monitor update to finish. In that case, we don't want to free the holding cell
- /// directly in `channel_monitor_updated` as it may introduce deadlocks calling back into user
- /// code to inform them of a channel monitor update.
fn check_free_holding_cells(&self) -> bool {
let mut has_monitor_update = false;
let mut failed_htlcs = Vec::new();
{
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
- let by_id = &mut channel_state.by_id;
- let short_to_id = &mut channel_state.short_to_id;
let pending_msg_events = &mut channel_state.pending_msg_events;
+ let per_peer_state = self.per_peer_state.read().unwrap();
- by_id.retain(|channel_id, chan| {
- match chan.maybe_free_holding_cell_htlcs(&self.logger) {
- Ok((commitment_opt, holding_cell_failed_htlcs)) => {
- if !holding_cell_failed_htlcs.is_empty() {
- failed_htlcs.push((holding_cell_failed_htlcs, *channel_id));
- }
- if let Some((commitment_update, monitor_update)) = commitment_opt {
- if let Err(e) = self.chain_monitor.update_channel(chan.get_funding_txo().unwrap(), monitor_update) {
- has_monitor_update = true;
- let (res, close_channel) = handle_monitor_err!(self, e, short_to_id, chan, RAACommitmentOrder::CommitmentFirst, channel_id, COMMITMENT_UPDATE_ONLY);
- handle_errors.push((chan.get_counterparty_node_id(), res));
- if close_channel { return false; }
- } else {
- pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
- node_id: chan.get_counterparty_node_id(),
- updates: commitment_update,
- });
+ for (_cp_id, peer_state_mutex) in per_peer_state.iter() {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ peer_state.channel_by_id.retain(|channel_id, chan| {
+ match chan.maybe_free_holding_cell_htlcs(&self.logger) {
+ Ok((commitment_opt, holding_cell_failed_htlcs)) => {
+ if !holding_cell_failed_htlcs.is_empty() {
+ failed_htlcs.push((
+ holding_cell_failed_htlcs,
+ *channel_id,
+ chan.get_counterparty_node_id()
+ ));
+ }
+ if let Some((commitment_update, monitor_update)) = commitment_opt {
+ match self.chain_monitor.update_channel(chan.get_funding_txo().unwrap(), monitor_update) {
+ ChannelMonitorUpdateStatus::Completed => {
+ pending_msg_events.push(events::MessageSendEvent::UpdateHTLCs {
+ node_id: chan.get_counterparty_node_id(),
+ updates: commitment_update,
+ });
+ },
+ e => {
+ has_monitor_update = true;
+ let (res, close_channel) = handle_monitor_update_res!(self, e, chan, RAACommitmentOrder::CommitmentFirst, channel_id, COMMITMENT_UPDATE_ONLY);
+ handle_errors.push((chan.get_counterparty_node_id(), res));
+ if close_channel { return false; }
+ },
+ }
}
+ true
+ },
+ Err(e) => {
+ let (close_channel, res) = convert_chan_err!(self, e, chan, channel_id);
+ handle_errors.push((chan.get_counterparty_node_id(), Err(res)));
+ // ChannelClosed event is generated by handle_error for us
+ !close_channel
}
- true
- },
- Err(e) => {
- let (close_channel, res) = convert_chan_err!(self, e, short_to_id, chan, channel_id);
- handle_errors.push((chan.get_counterparty_node_id(), Err(res)));
- // ChannelClosed event is generated by handle_error for us
- !close_channel
}
- }
- });
+ });
+ }
}
let has_update = has_monitor_update || !failed_htlcs.is_empty() || !handle_errors.is_empty();
- for (failures, channel_id) in failed_htlcs.drain(..) {
- self.fail_holding_cell_htlcs(failures, channel_id);
+ for (failures, channel_id, counterparty_node_id) in failed_htlcs.drain(..) {
+ self.fail_holding_cell_htlcs(failures, channel_id, &counterparty_node_id);
}
for (counterparty_node_id, err) in handle_errors.drain(..) {
{
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
- let by_id = &mut channel_state.by_id;
- let short_to_id = &mut channel_state.short_to_id;
let pending_msg_events = &mut channel_state.pending_msg_events;
+ let per_peer_state = self.per_peer_state.read().unwrap();
- by_id.retain(|channel_id, chan| {
- match chan.maybe_propose_closing_signed(&self.fee_estimator, &self.logger) {
- Ok((msg_opt, tx_opt)) => {
- if let Some(msg) = msg_opt {
- has_update = true;
- pending_msg_events.push(events::MessageSendEvent::SendClosingSigned {
- node_id: chan.get_counterparty_node_id(), msg,
- });
- }
- if let Some(tx) = tx_opt {
- // We're done with this channel. We got a closing_signed and sent back
- // a closing_signed with a closing transaction to broadcast.
- if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
- pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: update
+ for (_cp_id, peer_state_mutex) in per_peer_state.iter() {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ peer_state.channel_by_id.retain(|channel_id, chan| {
+ match chan.maybe_propose_closing_signed(&self.fee_estimator, &self.logger) {
+ Ok((msg_opt, tx_opt)) => {
+ if let Some(msg) = msg_opt {
+ has_update = true;
+ pending_msg_events.push(events::MessageSendEvent::SendClosingSigned {
+ node_id: chan.get_counterparty_node_id(), msg,
});
}
+ if let Some(tx) = tx_opt {
+ // We're done with this channel. We got a closing_signed and sent back
+ // a closing_signed with a closing transaction to broadcast.
+ if let Ok(update) = self.get_channel_update_for_broadcast(&chan) {
+ pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
+ msg: update
+ });
+ }
- self.issue_channel_close_events(chan, ClosureReason::CooperativeClosure);
+ self.issue_channel_close_events(chan, ClosureReason::CooperativeClosure);
- log_info!(self.logger, "Broadcasting {}", log_tx!(tx));
- self.tx_broadcaster.broadcast_transaction(&tx);
- update_maps_on_chan_removal!(self, short_to_id, chan);
- false
- } else { true }
- },
- Err(e) => {
- has_update = true;
- let (close_channel, res) = convert_chan_err!(self, e, short_to_id, chan, channel_id);
- handle_errors.push((chan.get_counterparty_node_id(), Err(res)));
- !close_channel
+ log_info!(self.logger, "Broadcasting {}", log_tx!(tx));
+ self.tx_broadcaster.broadcast_transaction(&tx);
+ update_maps_on_chan_removal!(self, chan);
+ false
+ } else { true }
+ },
+ Err(e) => {
+ has_update = true;
+ let (close_channel, res) = convert_chan_err!(self, e, chan, channel_id);
+ handle_errors.push((chan.get_counterparty_node_id(), Err(res)));
+ !close_channel
+ }
}
- }
- });
+ });
+ }
}
for (counterparty_node_id, err) in handle_errors.drain(..) {
/// This differs from [`create_inbound_payment_for_hash`] only in that it generates the
/// [`PaymentHash`] and [`PaymentPreimage`] for you.
///
- /// The [`PaymentPreimage`] will ultimately be returned to you in the [`PaymentReceived`], which
- /// will have the [`PaymentReceived::payment_preimage`] field filled in. That should then be
+ /// The [`PaymentPreimage`] will ultimately be returned to you in the [`PaymentClaimable`], which
+ /// will have the [`PaymentClaimable::payment_preimage`] field filled in. That should then be
/// passed directly to [`claim_funds`].
///
/// See [`create_inbound_payment_for_hash`] for detailed documentation on behavior and requirements.
/// Errors if `min_value_msat` is greater than total bitcoin supply.
///
/// [`claim_funds`]: Self::claim_funds
- /// [`PaymentReceived`]: events::Event::PaymentReceived
- /// [`PaymentReceived::payment_preimage`]: events::Event::PaymentReceived::payment_preimage
+ /// [`PaymentClaimable`]: events::Event::PaymentClaimable
+ /// [`PaymentClaimable::payment_preimage`]: events::Event::PaymentClaimable::payment_preimage
/// [`create_inbound_payment_for_hash`]: Self::create_inbound_payment_for_hash
pub fn create_inbound_payment(&self, min_value_msat: Option<u64>, invoice_expiry_delta_secs: u32) -> Result<(PaymentHash, PaymentSecret), ()> {
inbound_payment::create(&self.inbound_payment_key, min_value_msat, invoice_expiry_delta_secs, &self.keys_manager, self.highest_seen_timestamp.load(Ordering::Acquire) as u64)
/// Gets a [`PaymentSecret`] for a given [`PaymentHash`], for which the payment preimage is
/// stored external to LDK.
///
- /// A [`PaymentReceived`] event will only be generated if the [`PaymentSecret`] matches a
+ /// A [`PaymentClaimable`] event will only be generated if the [`PaymentSecret`] matches a
/// payment secret fetched via this method or [`create_inbound_payment`], and which is at least
/// the `min_value_msat` provided here, if one is provided.
///
///
/// `min_value_msat` should be set if the invoice being generated contains a value. Any payment
/// received for the returned [`PaymentHash`] will be required to be at least `min_value_msat`
- /// before a [`PaymentReceived`] event will be generated, ensuring that we do not provide the
+ /// before a [`PaymentClaimable`] event will be generated, ensuring that we do not provide the
/// sender "proof-of-payment" unless they have paid the required amount.
///
/// `invoice_expiry_delta_secs` describes the number of seconds that the invoice is valid for
///
/// Note that we use block header time to time-out pending inbound payments (with some margin
/// to compensate for the inaccuracy of block header timestamps). Thus, in practice we will
- /// accept a payment and generate a [`PaymentReceived`] event for some time after the expiry.
+ /// accept a payment and generate a [`PaymentClaimable`] event for some time after the expiry.
/// If you need exact expiry semantics, you should enforce them upon receipt of
- /// [`PaymentReceived`].
+ /// [`PaymentClaimable`].
///
/// Note that invoices generated for inbound payments should have their `min_final_cltv_expiry`
/// set to at least [`MIN_FINAL_CLTV_EXPIRY`].
/// Errors if `min_value_msat` is greater than total bitcoin supply.
///
/// [`create_inbound_payment`]: Self::create_inbound_payment
- /// [`PaymentReceived`]: events::Event::PaymentReceived
+ /// [`PaymentClaimable`]: events::Event::PaymentClaimable
pub fn create_inbound_payment_for_hash(&self, payment_hash: PaymentHash, min_value_msat: Option<u64>, invoice_expiry_delta_secs: u32) -> Result<PaymentSecret, ()> {
inbound_payment::create_from_hash(&self.inbound_payment_key, min_value_msat, payment_hash, invoice_expiry_delta_secs, self.highest_seen_timestamp.load(Ordering::Acquire) as u64)
}
///
/// [phantom node payments]: crate::chain::keysinterface::PhantomKeysManager
pub fn get_phantom_scid(&self) -> u64 {
- let mut channel_state = self.channel_state.lock().unwrap();
- let best_block = self.best_block.read().unwrap();
+ let best_block_height = self.best_block.read().unwrap().height();
+ let short_to_chan_info = self.short_to_chan_info.read().unwrap();
loop {
- let scid_candidate = fake_scid::Namespace::Phantom.get_fake_scid(best_block.height(), &self.genesis_hash, &self.fake_scid_rand_bytes, &self.keys_manager);
+ let scid_candidate = fake_scid::Namespace::Phantom.get_fake_scid(best_block_height, &self.genesis_hash, &self.fake_scid_rand_bytes, &self.keys_manager);
// Ensure the generated scid doesn't conflict with a real channel.
- match channel_state.short_to_id.entry(scid_candidate) {
- hash_map::Entry::Occupied(_) => continue,
- hash_map::Entry::Vacant(_) => return scid_candidate
+ match short_to_chan_info.get(&scid_candidate) {
+ Some(_) => continue,
+ None => return scid_candidate
}
}
}
}
}
+ /// Gets a fake short channel id for use in receiving intercepted payments. These fake scids are
+ /// used when constructing the route hints for HTLCs intended to be intercepted. See
+ /// [`ChannelManager::forward_intercepted_htlc`].
+ ///
+ /// Note that this method is not guaranteed to return unique values, you may need to call it a few
+ /// times to get a unique scid.
+ pub fn get_intercept_scid(&self) -> u64 {
+ let best_block_height = self.best_block.read().unwrap().height();
+ let short_to_chan_info = self.short_to_chan_info.read().unwrap();
+ loop {
+ let scid_candidate = fake_scid::Namespace::Intercept.get_fake_scid(best_block_height, &self.genesis_hash, &self.fake_scid_rand_bytes, &self.keys_manager);
+ // Ensure the generated scid doesn't conflict with a real channel.
+ if short_to_chan_info.contains_key(&scid_candidate) { continue }
+ return scid_candidate
+ }
+ }
+
+ /// Gets inflight HTLC information by processing pending outbound payments that are in
+ /// our channels. May be used during pathfinding to account for in-use channel liquidity.
+ pub fn compute_inflight_htlcs(&self) -> InFlightHtlcs {
+ let mut inflight_htlcs = InFlightHtlcs::new();
+
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ for (_cp_id, peer_state_mutex) in per_peer_state.iter() {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ for chan in peer_state.channel_by_id.values() {
+ for (htlc_source, _) in chan.inflight_htlc_sources() {
+ if let HTLCSource::OutboundRoute { path, .. } = htlc_source {
+ inflight_htlcs.process_path(path, self.get_our_node_id());
+ }
+ }
+ }
+ }
+
+ inflight_htlcs
+ }
+
#[cfg(any(test, fuzzing, feature = "_test_utils"))]
pub fn get_and_clear_pending_events(&self) -> Vec<events::Event> {
let events = core::cell::RefCell::new(Vec::new());
- let event_handler = |event: &events::Event| events.borrow_mut().push(event.clone());
+ let event_handler = |event: events::Event| events.borrow_mut().push(event);
self.process_pending_events(&event_handler);
events.into_inner()
}
+ #[cfg(test)]
+ pub fn pop_pending_event(&self) -> Option<events::Event> {
+ let mut events = self.pending_events.lock().unwrap();
+ if events.is_empty() { None } else { Some(events.remove(0)) }
+ }
+
#[cfg(test)]
pub fn has_pending_payments(&self) -> bool {
- !self.pending_outbound_payments.lock().unwrap().is_empty()
+ self.pending_outbound_payments.has_pending_payments()
}
#[cfg(test)]
pub fn clear_pending_payments(&self) {
- self.pending_outbound_payments.lock().unwrap().clear()
+ self.pending_outbound_payments.clear_pending_payments()
+ }
+
+ /// Processes any events asynchronously in the order they were generated since the last call
+ /// using the given event handler.
+ ///
+ /// See the trait-level documentation of [`EventsProvider`] for requirements.
+ pub async fn process_pending_events_async<Future: core::future::Future, H: Fn(Event) -> Future>(
+ &self, handler: H
+ ) {
+ // We'll acquire our total consistency lock until the returned future completes so that
+ // we can be sure no other persists happen while processing events.
+ let _read_guard = self.total_consistency_lock.read().unwrap();
+
+ let mut result = NotifyOption::SkipPersist;
+
+ // TODO: This behavior should be documented. It's unintuitive that we query
+ // ChannelMonitors when clearing other events.
+ if self.process_pending_monitor_events() {
+ result = NotifyOption::DoPersist;
+ }
+
+ let pending_events = mem::replace(&mut *self.pending_events.lock().unwrap(), vec![]);
+ if !pending_events.is_empty() {
+ result = NotifyOption::DoPersist;
+ }
+
+ for event in pending_events {
+ handler(event).await;
+ }
+
+ if result == NotifyOption::DoPersist {
+ self.persistence_notifier.notify();
+ }
}
}
-impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> MessageSendEventsProvider for ChannelManager<Signer, M, T, K, F, L>
- where M::Target: chain::Watch<Signer>,
- T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
- F::Target: FeeEstimator,
- L::Target: Logger,
+impl<M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref> MessageSendEventsProvider for ChannelManager<M, T, K, F, R, L>
+where
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
+ T::Target: BroadcasterInterface,
+ K::Target: KeysInterface,
+ F::Target: FeeEstimator,
+ R::Target: Router,
+ L::Target: Logger,
{
fn get_and_clear_pending_msg_events(&self) -> Vec<MessageSendEvent> {
let events = RefCell::new(Vec::new());
}
}
-impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> EventsProvider for ChannelManager<Signer, M, T, K, F, L>
+impl<M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref> EventsProvider for ChannelManager<M, T, K, F, R, L>
where
- M::Target: chain::Watch<Signer>,
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
+ K::Target: KeysInterface,
F::Target: FeeEstimator,
+ R::Target: Router,
L::Target: Logger,
{
/// Processes events that must be periodically handled.
///
/// An [`EventHandler`] may safely call back to the provider in order to handle an event.
/// However, it must not call [`Writeable::write`] as doing so would result in a deadlock.
- ///
- /// Pending events are persisted as part of [`ChannelManager`]. While these events are cleared
- /// when processed, an [`EventHandler`] must be able to handle previously seen events when
- /// restarting from an old state.
fn process_pending_events<H: Deref>(&self, handler: H) where H::Target: EventHandler {
PersistenceNotifierGuard::optionally_notify(&self.total_consistency_lock, &self.persistence_notifier, || {
let mut result = NotifyOption::SkipPersist;
result = NotifyOption::DoPersist;
}
- let mut pending_events = mem::replace(&mut *self.pending_events.lock().unwrap(), vec![]);
+ let pending_events = mem::replace(&mut *self.pending_events.lock().unwrap(), vec![]);
if !pending_events.is_empty() {
result = NotifyOption::DoPersist;
}
- for event in pending_events.drain(..) {
- handler.handle_event(&event);
+ for event in pending_events {
+ handler.handle_event(event);
}
result
}
}
-impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> chain::Listen for ChannelManager<Signer, M, T, K, F, L>
+impl<M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref> chain::Listen for ChannelManager<M, T, K, F, R, L>
where
- M::Target: chain::Watch<Signer>,
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
+ K::Target: KeysInterface,
F::Target: FeeEstimator,
+ R::Target: Router,
L::Target: Logger,
{
fn filtered_block_connected(&self, header: &BlockHeader, txdata: &TransactionData, height: u32) {
}
}
-impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> chain::Confirm for ChannelManager<Signer, M, T, K, F, L>
+impl<M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref> chain::Confirm for ChannelManager<M, T, K, F, R, L>
where
- M::Target: chain::Watch<Signer>,
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
+ K::Target: KeysInterface,
F::Target: FeeEstimator,
+ R::Target: Router,
L::Target: Logger,
{
fn transactions_confirmed(&self, header: &BlockHeader, txdata: &TransactionData, height: u32) {
}
}
}
- max_time!(self.last_node_announcement_serial);
max_time!(self.highest_seen_timestamp);
let mut payment_secrets = self.pending_inbound_payments.lock().unwrap();
payment_secrets.retain(|_, inbound_payment| {
inbound_payment.expiry_time > header.time as u64
});
-
- let mut outbounds = self.pending_outbound_payments.lock().unwrap();
- let mut pending_events = self.pending_events.lock().unwrap();
- outbounds.retain(|payment_id, payment| {
- if payment.remaining_parts() != 0 { return true }
- if let PendingOutboundPayment::Retryable { starting_block_height, payment_hash, .. } = payment {
- if *starting_block_height + PAYMENT_EXPIRY_BLOCKS <= height {
- log_info!(self.logger, "Timing out payment with id {} and hash {}", log_bytes!(payment_id.0), log_bytes!(payment_hash.0));
- pending_events.push(events::Event::PaymentFailed {
- payment_id: *payment_id, payment_hash: *payment_hash,
- });
- false
- } else { true }
- } else { true }
- });
}
- fn get_relevant_txids(&self) -> Vec<Txid> {
- let channel_state = self.channel_state.lock().unwrap();
- let mut res = Vec::with_capacity(channel_state.short_to_id.len());
- for chan in channel_state.by_id.values() {
- if let Some(funding_txo) = chan.get_funding_txo() {
- res.push(funding_txo.txid);
+ fn get_relevant_txids(&self) -> Vec<(Txid, Option<BlockHash>)> {
+ let mut res = Vec::with_capacity(self.short_to_chan_info.read().unwrap().len());
+ for (_cp_id, peer_state_mutex) in self.per_peer_state.read().unwrap().iter() {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ for chan in peer_state.channel_by_id.values() {
+ if let (Some(funding_txo), block_hash) = (chan.get_funding_txo(), chan.get_funding_tx_confirmed_in()) {
+ res.push((funding_txo.txid, block_hash));
+ }
}
}
res
}
}
-impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelManager<Signer, M, T, K, F, L>
+impl<M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref> ChannelManager<M, T, K, F, R, L>
where
- M::Target: chain::Watch<Signer>,
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
+ K::Target: KeysInterface,
F::Target: FeeEstimator,
+ R::Target: Router,
L::Target: Logger,
{
/// Calls a function which handles an on-chain event (blocks dis/connected, transactions
/// un/confirmed, etc) on each channel, handling any resulting errors or messages generated by
/// the function.
- fn do_chain_event<FN: Fn(&mut Channel<Signer>) -> Result<(Option<msgs::ChannelReady>, Vec<(HTLCSource, PaymentHash)>, Option<msgs::AnnouncementSignatures>), ClosureReason>>
+ fn do_chain_event<FN: Fn(&mut Channel<<K::Target as SignerProvider>::Signer>) -> Result<(Option<msgs::ChannelReady>, Vec<(HTLCSource, PaymentHash)>, Option<msgs::AnnouncementSignatures>), ClosureReason>>
(&self, height_opt: Option<u32>, f: FN) {
// Note that we MUST NOT end up calling methods on self.chain_monitor here - we're called
// during initialization prior to the chain_monitor being fully configured in some cases.
{
let mut channel_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_lock;
- let short_to_id = &mut channel_state.short_to_id;
let pending_msg_events = &mut channel_state.pending_msg_events;
- channel_state.by_id.retain(|_, channel| {
- let res = f(channel);
- if let Ok((channel_ready_opt, mut timed_out_pending_htlcs, announcement_sigs)) = res {
- for (source, payment_hash) in timed_out_pending_htlcs.drain(..) {
- let (failure_code, data) = self.get_htlc_inbound_temp_fail_err_and_data(0x1000|14 /* expiry_too_soon */, &channel);
- timed_out_htlcs.push((source, payment_hash, HTLCFailReason::Reason {
- failure_code, data,
- }));
- }
- if let Some(channel_ready) = channel_ready_opt {
- send_channel_ready!(short_to_id, pending_msg_events, channel, channel_ready);
- if channel.is_usable() {
- log_trace!(self.logger, "Sending channel_ready with private initial channel_update for our counterparty on channel {}", log_bytes!(channel.channel_id()));
- if let Ok(msg) = self.get_channel_update_for_unicast(channel) {
- pending_msg_events.push(events::MessageSendEvent::SendChannelUpdate {
- node_id: channel.get_counterparty_node_id(),
- msg,
- });
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ for (_cp_id, peer_state_mutex) in per_peer_state.iter() {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ peer_state.channel_by_id.retain(|_, channel| {
+ let res = f(channel);
+ if let Ok((channel_ready_opt, mut timed_out_pending_htlcs, announcement_sigs)) = res {
+ for (source, payment_hash) in timed_out_pending_htlcs.drain(..) {
+ let (failure_code, data) = self.get_htlc_inbound_temp_fail_err_and_data(0x1000|14 /* expiry_too_soon */, &channel);
+ timed_out_htlcs.push((source, payment_hash, HTLCFailReason::reason(failure_code, data),
+ HTLCDestination::NextHopChannel { node_id: Some(channel.get_counterparty_node_id()), channel_id: channel.channel_id() }));
+ }
+ if let Some(channel_ready) = channel_ready_opt {
+ send_channel_ready!(self, pending_msg_events, channel, channel_ready);
+ if channel.is_usable() {
+ log_trace!(self.logger, "Sending channel_ready with private initial channel_update for our counterparty on channel {}", log_bytes!(channel.channel_id()));
+ if let Ok(msg) = self.get_channel_update_for_unicast(channel) {
+ pending_msg_events.push(events::MessageSendEvent::SendChannelUpdate {
+ node_id: channel.get_counterparty_node_id(),
+ msg,
+ });
+ }
+ } else {
+ log_trace!(self.logger, "Sending channel_ready WITHOUT channel_update for {}", log_bytes!(channel.channel_id()));
}
- } else {
- log_trace!(self.logger, "Sending channel_ready WITHOUT channel_update for {}", log_bytes!(channel.channel_id()));
}
- }
- if let Some(announcement_sigs) = announcement_sigs {
- log_trace!(self.logger, "Sending announcement_signatures for channel {}", log_bytes!(channel.channel_id()));
- pending_msg_events.push(events::MessageSendEvent::SendAnnouncementSignatures {
- node_id: channel.get_counterparty_node_id(),
- msg: announcement_sigs,
- });
- if let Some(height) = height_opt {
- if let Some(announcement) = channel.get_signed_channel_announcement(self.get_our_node_id(), self.genesis_hash, height) {
- pending_msg_events.push(events::MessageSendEvent::BroadcastChannelAnnouncement {
- msg: announcement,
- // Note that announcement_signatures fails if the channel cannot be announced,
- // so get_channel_update_for_broadcast will never fail by the time we get here.
- update_msg: self.get_channel_update_for_broadcast(channel).unwrap(),
- });
+
+ emit_channel_ready_event!(self, channel);
+
+ if let Some(announcement_sigs) = announcement_sigs {
+ log_trace!(self.logger, "Sending announcement_signatures for channel {}", log_bytes!(channel.channel_id()));
+ pending_msg_events.push(events::MessageSendEvent::SendAnnouncementSignatures {
+ node_id: channel.get_counterparty_node_id(),
+ msg: announcement_sigs,
+ });
+ if let Some(height) = height_opt {
+ if let Some(announcement) = channel.get_signed_channel_announcement(self.get_our_node_id(), self.genesis_hash, height) {
+ pending_msg_events.push(events::MessageSendEvent::BroadcastChannelAnnouncement {
+ msg: announcement,
+ // Note that announcement_signatures fails if the channel cannot be announced,
+ // so get_channel_update_for_broadcast will never fail by the time we get here.
+ update_msg: self.get_channel_update_for_broadcast(channel).unwrap(),
+ });
+ }
}
}
- }
- if channel.is_our_channel_ready() {
- if let Some(real_scid) = channel.get_short_channel_id() {
- // If we sent a 0conf channel_ready, and now have an SCID, we add it
- // to the short_to_id map here. Note that we check whether we can relay
- // using the real SCID at relay-time (i.e. enforce option_scid_alias
- // then), and if the funding tx is ever un-confirmed we force-close the
- // channel, ensuring short_to_id is always consistent.
- let scid_insert = short_to_id.insert(real_scid, channel.channel_id());
- assert!(scid_insert.is_none() || scid_insert.unwrap() == channel.channel_id(),
- "SCIDs should never collide - ensure you weren't behind by a full {} blocks when creating channels",
- fake_scid::MAX_SCID_BLOCKS_FROM_NOW);
+ if channel.is_our_channel_ready() {
+ if let Some(real_scid) = channel.get_short_channel_id() {
+ // If we sent a 0conf channel_ready, and now have an SCID, we add it
+ // to the short_to_chan_info map here. Note that we check whether we
+ // can relay using the real SCID at relay-time (i.e.
+ // enforce option_scid_alias then), and if the funding tx is ever
+ // un-confirmed we force-close the channel, ensuring short_to_chan_info
+ // is always consistent.
+ let mut short_to_chan_info = self.short_to_chan_info.write().unwrap();
+ let scid_insert = short_to_chan_info.insert(real_scid, (channel.get_counterparty_node_id(), channel.channel_id()));
+ assert!(scid_insert.is_none() || scid_insert.unwrap() == (channel.get_counterparty_node_id(), channel.channel_id()),
+ "SCIDs should never collide - ensure you weren't behind by a full {} blocks when creating channels",
+ fake_scid::MAX_SCID_BLOCKS_FROM_NOW);
+ }
}
- }
- } else if let Err(reason) = res {
- update_maps_on_chan_removal!(self, short_to_id, channel);
- // It looks like our counterparty went on-chain or funding transaction was
- // reorged out of the main chain. Close the channel.
- failed_channels.push(channel.force_shutdown(true));
- if let Ok(update) = self.get_channel_update_for_broadcast(&channel) {
- pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
- msg: update
+ } else if let Err(reason) = res {
+ update_maps_on_chan_removal!(self, channel);
+ // It looks like our counterparty went on-chain or funding transaction was
+ // reorged out of the main chain. Close the channel.
+ failed_channels.push(channel.force_shutdown(true));
+ if let Ok(update) = self.get_channel_update_for_broadcast(&channel) {
+ pending_msg_events.push(events::MessageSendEvent::BroadcastChannelUpdate {
+ msg: update
+ });
+ }
+ let reason_message = format!("{}", reason);
+ self.issue_channel_close_events(channel, reason);
+ pending_msg_events.push(events::MessageSendEvent::HandleError {
+ node_id: channel.get_counterparty_node_id(),
+ action: msgs::ErrorAction::SendErrorMessage { msg: msgs::ErrorMessage {
+ channel_id: channel.channel_id(),
+ data: reason_message,
+ } },
});
+ return false;
}
- let reason_message = format!("{}", reason);
- self.issue_channel_close_events(channel, reason);
- pending_msg_events.push(events::MessageSendEvent::HandleError {
- node_id: channel.get_counterparty_node_id(),
- action: msgs::ErrorAction::SendErrorMessage { msg: msgs::ErrorMessage {
- channel_id: channel.channel_id(),
- data: reason_message,
- } },
- });
- return false;
- }
- true
+ true
+ });
+ }
+ }
+
+ if let Some(height) = height_opt {
+ self.claimable_payments.lock().unwrap().claimable_htlcs.retain(|payment_hash, (_, htlcs)| {
+ htlcs.retain(|htlc| {
+ // If height is approaching the number of blocks we think it takes us to get
+ // our commitment transaction confirmed before the HTLC expires, plus the
+ // number of blocks we generally consider it to take to do a commitment update,
+ // just give up on it and fail the HTLC.
+ if height >= htlc.cltv_expiry - HTLC_FAIL_BACK_BUFFER {
+ let mut htlc_msat_height_data = htlc.value.to_be_bytes().to_vec();
+ htlc_msat_height_data.extend_from_slice(&height.to_be_bytes());
+
+ timed_out_htlcs.push((HTLCSource::PreviousHopData(htlc.prev_hop.clone()), payment_hash.clone(),
+ HTLCFailReason::reason(0x4000 | 15, htlc_msat_height_data),
+ HTLCDestination::FailedPayment { payment_hash: payment_hash.clone() }));
+ false
+ } else { true }
+ });
+ !htlcs.is_empty() // Only retain this entry if htlcs has at least one entry.
});
- if let Some(height) = height_opt {
- channel_state.claimable_htlcs.retain(|payment_hash, (_, htlcs)| {
- htlcs.retain(|htlc| {
- // If height is approaching the number of blocks we think it takes us to get
- // our commitment transaction confirmed before the HTLC expires, plus the
- // number of blocks we generally consider it to take to do a commitment update,
- // just give up on it and fail the HTLC.
- if height >= htlc.cltv_expiry - HTLC_FAIL_BACK_BUFFER {
- let mut htlc_msat_height_data = byte_utils::be64_to_array(htlc.value).to_vec();
- htlc_msat_height_data.extend_from_slice(&byte_utils::be32_to_array(height));
- timed_out_htlcs.push((HTLCSource::PreviousHopData(htlc.prev_hop.clone()), payment_hash.clone(), HTLCFailReason::Reason {
- failure_code: 0x4000 | 15,
- data: htlc_msat_height_data
- }));
- false
- } else { true }
+ let mut intercepted_htlcs = self.pending_intercepted_htlcs.lock().unwrap();
+ intercepted_htlcs.retain(|_, htlc| {
+ if height >= htlc.forward_info.outgoing_cltv_value - HTLC_FAIL_BACK_BUFFER {
+ let prev_hop_data = HTLCSource::PreviousHopData(HTLCPreviousHopData {
+ short_channel_id: htlc.prev_short_channel_id,
+ htlc_id: htlc.prev_htlc_id,
+ incoming_packet_shared_secret: htlc.forward_info.incoming_shared_secret,
+ phantom_shared_secret: None,
+ outpoint: htlc.prev_funding_outpoint,
});
- !htlcs.is_empty() // Only retain this entry if htlcs has at least one entry.
- });
- }
+
+ let requested_forward_scid /* intercept scid */ = match htlc.forward_info.routing {
+ PendingHTLCRouting::Forward { short_channel_id, .. } => short_channel_id,
+ _ => unreachable!(),
+ };
+ timed_out_htlcs.push((prev_hop_data, htlc.forward_info.payment_hash,
+ HTLCFailReason::from_failure_code(0x2000 | 2),
+ HTLCDestination::InvalidForward { requested_forward_scid }));
+ log_trace!(self.logger, "Timing out intercepted HTLC with requested forward scid {}", requested_forward_scid);
+ false
+ } else { true }
+ });
}
self.handle_init_event_channel_failures(failed_channels);
- for (source, payment_hash, reason) in timed_out_htlcs.drain(..) {
- self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), source, &payment_hash, reason);
+ for (source, payment_hash, reason, destination) in timed_out_htlcs.drain(..) {
+ self.fail_htlc_backwards_internal(&source, &payment_hash, &reason, destination);
}
}
/// Blocks until ChannelManager needs to be persisted or a timeout is reached. It returns a bool
/// indicating whether persistence is necessary. Only one listener on
- /// `await_persistable_update` or `await_persistable_update_timeout` is guaranteed to be woken
- /// up.
+ /// [`await_persistable_update`], [`await_persistable_update_timeout`], or a future returned by
+ /// [`get_persistable_update_future`] is guaranteed to be woken up.
///
/// Note that this method is not available with the `no-std` feature.
+ ///
+ /// [`await_persistable_update`]: Self::await_persistable_update
+ /// [`await_persistable_update_timeout`]: Self::await_persistable_update_timeout
+ /// [`get_persistable_update_future`]: Self::get_persistable_update_future
#[cfg(any(test, feature = "std"))]
pub fn await_persistable_update_timeout(&self, max_wait: Duration) -> bool {
self.persistence_notifier.wait_timeout(max_wait)
}
/// Blocks until ChannelManager needs to be persisted. Only one listener on
- /// `await_persistable_update` or `await_persistable_update_timeout` is guaranteed to be woken
- /// up.
+ /// [`await_persistable_update`], `await_persistable_update_timeout`, or a future returned by
+ /// [`get_persistable_update_future`] is guaranteed to be woken up.
+ ///
+ /// [`await_persistable_update`]: Self::await_persistable_update
+ /// [`get_persistable_update_future`]: Self::get_persistable_update_future
pub fn await_persistable_update(&self) {
self.persistence_notifier.wait()
}
+ /// Gets a [`Future`] that completes when a persistable update is available. Note that
+ /// callbacks registered on the [`Future`] MUST NOT call back into this [`ChannelManager`] and
+ /// should instead register actions to be taken later.
+ pub fn get_persistable_update_future(&self) -> Future {
+ self.persistence_notifier.get_future()
+ }
+
#[cfg(any(test, feature = "_test_utils"))]
pub fn get_persistence_condvar_value(&self) -> bool {
- let mutcond = &self.persistence_notifier.persistence_lock;
- let &(ref mtx, _) = mutcond;
- let guard = mtx.lock().unwrap();
- *guard
+ self.persistence_notifier.notify_pending()
}
/// Gets the latest best block which was connected either via the [`chain::Listen`] or
}
}
-impl<Signer: Sign, M: Deref , T: Deref , K: Deref , F: Deref , L: Deref >
- ChannelMessageHandler for ChannelManager<Signer, M, T, K, F, L>
- where M::Target: chain::Watch<Signer>,
- T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
- F::Target: FeeEstimator,
- L::Target: Logger,
+impl<M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref>
+ ChannelMessageHandler for ChannelManager<M, T, K, F, R, L>
+where
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
+ T::Target: BroadcasterInterface,
+ K::Target: KeysInterface,
+ F::Target: FeeEstimator,
+ R::Target: Router,
+ L::Target: Logger,
{
fn handle_open_channel(&self, counterparty_node_id: &PublicKey, their_features: InitFeatures, msg: &msgs::OpenChannel) {
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
let mut failed_channels = Vec::new();
let mut no_channels_remain = true;
- {
- let mut channel_state_lock = self.channel_state.lock().unwrap();
- let channel_state = &mut *channel_state_lock;
+ let mut channel_state = self.channel_state.lock().unwrap();
+ let mut per_peer_state = self.per_peer_state.write().unwrap();
+ {
let pending_msg_events = &mut channel_state.pending_msg_events;
- let short_to_id = &mut channel_state.short_to_id;
log_debug!(self.logger, "Marking channels with {} disconnected and generating channel_updates. We believe we {} make future connections to this peer.",
log_pubkey!(counterparty_node_id), if no_connection_possible { "cannot" } else { "can" });
- channel_state.by_id.retain(|_, chan| {
- if chan.get_counterparty_node_id() == *counterparty_node_id {
- chan.remove_uncommitted_htlcs_and_mark_paused(&self.logger);
- if chan.is_shutdown() {
- update_maps_on_chan_removal!(self, short_to_id, chan);
- self.issue_channel_close_events(chan, ClosureReason::DisconnectedPeer);
- return false;
- } else {
- no_channels_remain = false;
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ peer_state.channel_by_id.retain(|_, chan| {
+ if chan.get_counterparty_node_id() == *counterparty_node_id {
+ chan.remove_uncommitted_htlcs_and_mark_paused(&self.logger);
+ if chan.is_shutdown() {
+ update_maps_on_chan_removal!(self, chan);
+ self.issue_channel_close_events(chan, ClosureReason::DisconnectedPeer);
+ return false;
+ } else {
+ no_channels_remain = false;
+ }
}
- }
- true
- });
+ true
+ });
+ }
pending_msg_events.retain(|msg| {
match msg {
&events::MessageSendEvent::SendAcceptChannel { ref node_id, .. } => node_id != counterparty_node_id,
&events::MessageSendEvent::SendClosingSigned { ref node_id, .. } => node_id != counterparty_node_id,
&events::MessageSendEvent::SendShutdown { ref node_id, .. } => node_id != counterparty_node_id,
&events::MessageSendEvent::SendChannelReestablish { ref node_id, .. } => node_id != counterparty_node_id,
+ &events::MessageSendEvent::SendChannelAnnouncement { ref node_id, .. } => node_id != counterparty_node_id,
&events::MessageSendEvent::BroadcastChannelAnnouncement { .. } => true,
- &events::MessageSendEvent::BroadcastNodeAnnouncement { .. } => true,
&events::MessageSendEvent::BroadcastChannelUpdate { .. } => true,
&events::MessageSendEvent::SendChannelUpdate { ref node_id, .. } => node_id != counterparty_node_id,
&events::MessageSendEvent::HandleError { ref node_id, .. } => node_id != counterparty_node_id,
&events::MessageSendEvent::SendGossipTimestampFilter { .. } => false,
}
});
+ mem::drop(channel_state);
}
if no_channels_remain {
- self.per_peer_state.write().unwrap().remove(counterparty_node_id);
+ per_peer_state.remove(counterparty_node_id);
}
+ mem::drop(per_peer_state);
for failure in failed_channels.drain(..) {
self.finish_force_close_channel(failure);
}
}
- fn peer_connected(&self, counterparty_node_id: &PublicKey, init_msg: &msgs::Init) {
+ fn peer_connected(&self, counterparty_node_id: &PublicKey, init_msg: &msgs::Init) -> Result<(), ()> {
+ if !init_msg.features.supports_static_remote_key() {
+ log_debug!(self.logger, "Peer {} does not support static remote key, disconnecting with no_connection_possible", log_pubkey!(counterparty_node_id));
+ return Err(());
+ }
+
log_debug!(self.logger, "Generating channel_reestablish events for {}", log_pubkey!(counterparty_node_id));
let _persistence_guard = PersistenceNotifierGuard::notify_on_drop(&self.total_consistency_lock, &self.persistence_notifier);
match peer_state_lock.entry(counterparty_node_id.clone()) {
hash_map::Entry::Vacant(e) => {
e.insert(Mutex::new(PeerState {
+ channel_by_id: HashMap::new(),
latest_features: init_msg.features.clone(),
}));
},
let mut channel_state_lock = self.channel_state.lock().unwrap();
let channel_state = &mut *channel_state_lock;
let pending_msg_events = &mut channel_state.pending_msg_events;
- channel_state.by_id.retain(|_, chan| {
- if chan.get_counterparty_node_id() == *counterparty_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 {
- pending_msg_events.push(events::MessageSendEvent::SendChannelReestablish {
- node_id: chan.get_counterparty_node_id(),
- msg: chan.get_channel_reestablish(&self.logger),
- });
- true
+ let per_peer_state = self.per_peer_state.read().unwrap();
+
+ for (_cp_id, peer_state_mutex) in per_peer_state.iter() {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ peer_state.channel_by_id.retain(|_, chan| {
+ let retain = if chan.get_counterparty_node_id() == *counterparty_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 {
+ pending_msg_events.push(events::MessageSendEvent::SendChannelReestablish {
+ node_id: chan.get_counterparty_node_id(),
+ msg: chan.get_channel_reestablish(&self.logger),
+ });
+ true
+ }
+ } else { true };
+ if retain && chan.get_counterparty_node_id() != *counterparty_node_id {
+ if let Some(msg) = chan.get_signed_channel_announcement(self.get_our_node_id(), self.genesis_hash.clone(), self.best_block.read().unwrap().height()) {
+ if let Ok(update_msg) = self.get_channel_update_for_broadcast(chan) {
+ pending_msg_events.push(events::MessageSendEvent::SendChannelAnnouncement {
+ node_id: *counterparty_node_id,
+ msg, update_msg,
+ });
+ }
+ }
}
- } else { true }
- });
+ retain
+ });
+ }
//TODO: Also re-broadcast announcement_signatures
+ Ok(())
}
fn handle_error(&self, counterparty_node_id: &PublicKey, msg: &msgs::ErrorMessage) {
for chan in self.list_channels() {
if chan.counterparty.node_id == *counterparty_node_id {
// Untrusted messages from peer, we throw away the error if id points to a non-existent channel
- let _ = self.force_close_channel_with_peer(&chan.channel_id, counterparty_node_id, Some(&msg.data));
+ let _ = self.force_close_channel_with_peer(&chan.channel_id, counterparty_node_id, Some(&msg.data), true);
}
}
} else {
{
// First check if we can advance the channel type and try again.
let mut channel_state = self.channel_state.lock().unwrap();
- if let Some(chan) = channel_state.by_id.get_mut(&msg.channel_id) {
- if chan.get_counterparty_node_id() != *counterparty_node_id {
- return;
- }
- if let Ok(msg) = chan.maybe_handle_error_without_close(self.genesis_hash) {
- channel_state.pending_msg_events.push(events::MessageSendEvent::SendOpenChannel {
- node_id: *counterparty_node_id,
- msg,
- });
- return;
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ if let Some(peer_state_mutex) = per_peer_state.get(counterparty_node_id) {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ if let Some(chan) = peer_state.channel_by_id.get_mut(&msg.channel_id) {
+ if chan.get_counterparty_node_id() != *counterparty_node_id {
+ return;
+ }
+ if let Ok(msg) = chan.maybe_handle_error_without_close(self.genesis_hash) {
+ channel_state.pending_msg_events.push(events::MessageSendEvent::SendOpenChannel {
+ node_id: *counterparty_node_id,
+ msg,
+ });
+ return;
+ }
}
- }
+ } else { return; }
}
// Untrusted messages from peer, we throw away the error if id points to a non-existent channel
- let _ = self.force_close_channel_with_peer(&msg.channel_id, counterparty_node_id, Some(&msg.data));
+ let _ = self.force_close_channel_with_peer(&msg.channel_id, counterparty_node_id, Some(&msg.data), true);
}
}
-}
-
-/// Used to signal to the ChannelManager persister that the manager needs to be re-persisted to
-/// disk/backups, through `await_persistable_update_timeout` and `await_persistable_update`.
-struct PersistenceNotifier {
- /// Users won't access the persistence_lock directly, but rather wait on its bool using
- /// `wait_timeout` and `wait`.
- persistence_lock: (Mutex<bool>, Condvar),
-}
-impl PersistenceNotifier {
- fn new() -> Self {
- Self {
- persistence_lock: (Mutex::new(false), Condvar::new()),
- }
+ fn provided_node_features(&self) -> NodeFeatures {
+ provided_node_features()
}
- fn wait(&self) {
- loop {
- let &(ref mtx, ref cvar) = &self.persistence_lock;
- let mut guard = mtx.lock().unwrap();
- if *guard {
- *guard = false;
- return;
- }
- guard = cvar.wait(guard).unwrap();
- let result = *guard;
- if result {
- *guard = false;
- return
- }
- }
+ fn provided_init_features(&self, _their_init_features: &PublicKey) -> InitFeatures {
+ provided_init_features()
}
+}
- #[cfg(any(test, feature = "std"))]
- fn wait_timeout(&self, max_wait: Duration) -> bool {
- let current_time = Instant::now();
- loop {
- let &(ref mtx, ref cvar) = &self.persistence_lock;
- let mut guard = mtx.lock().unwrap();
- if *guard {
- *guard = false;
- return true;
- }
- guard = cvar.wait_timeout(guard, max_wait).unwrap().0;
- // Due to spurious wakeups that can happen on `wait_timeout`, here we need to check if the
- // desired wait time has actually passed, and if not then restart the loop with a reduced wait
- // time. Note that this logic can be highly simplified through the use of
- // `Condvar::wait_while` and `Condvar::wait_timeout_while`, if and when our MSRV is raised to
- // 1.42.0.
- let elapsed = current_time.elapsed();
- let result = *guard;
- if result || elapsed >= max_wait {
- *guard = false;
- return result;
- }
- match max_wait.checked_sub(elapsed) {
- None => return result,
- Some(_) => continue
- }
- }
- }
+/// Fetches the set of [`NodeFeatures`] flags which are provided by or required by
+/// [`ChannelManager`].
+pub fn provided_node_features() -> NodeFeatures {
+ provided_init_features().to_context()
+}
- // Signal to the ChannelManager persister that there are updates necessitating persisting to disk.
- fn notify(&self) {
- let &(ref persist_mtx, ref cnd) = &self.persistence_lock;
- let mut persistence_lock = persist_mtx.lock().unwrap();
- *persistence_lock = true;
- mem::drop(persistence_lock);
- cnd.notify_all();
- }
+/// Fetches the set of [`InvoiceFeatures`] flags which are provided by or required by
+/// [`ChannelManager`].
+///
+/// Note that the invoice feature flags can vary depending on if the invoice is a "phantom invoice"
+/// or not. Thus, this method is not public.
+#[cfg(any(feature = "_test_utils", test))]
+pub fn provided_invoice_features() -> InvoiceFeatures {
+ provided_init_features().to_context()
+}
+
+/// Fetches the set of [`ChannelFeatures`] flags which are provided by or required by
+/// [`ChannelManager`].
+pub fn provided_channel_features() -> ChannelFeatures {
+ provided_init_features().to_context()
+}
+
+/// Fetches the set of [`InitFeatures`] flags which are provided by or required by
+/// [`ChannelManager`].
+pub fn provided_init_features() -> InitFeatures {
+ // Note that if new features are added here which other peers may (eventually) require, we
+ // should also add the corresponding (optional) bit to the ChannelMessageHandler impl for
+ // ErroringMessageHandler.
+ let mut features = InitFeatures::empty();
+ features.set_data_loss_protect_optional();
+ features.set_upfront_shutdown_script_optional();
+ features.set_variable_length_onion_required();
+ features.set_static_remote_key_required();
+ features.set_payment_secret_required();
+ features.set_basic_mpp_optional();
+ features.set_wumbo_optional();
+ features.set_shutdown_any_segwit_optional();
+ features.set_channel_type_optional();
+ features.set_scid_privacy_optional();
+ features.set_zero_conf_optional();
+ features
}
const SERIALIZATION_VERSION: u8 = 1;
(11, outbound_htlc_maximum_msat, option),
});
-impl_writeable_tlv_based!(ChannelDetails, {
- (1, inbound_scid_alias, option),
- (2, channel_id, required),
- (3, channel_type, option),
- (4, counterparty, required),
- (5, outbound_scid_alias, option),
- (6, funding_txo, option),
- (8, short_channel_id, option),
- (10, channel_value_satoshis, required),
- (12, unspendable_punishment_reserve, option),
- (14, user_channel_id, required),
- (16, balance_msat, required),
- (18, outbound_capacity_msat, required),
- // Note that by the time we get past the required read above, outbound_capacity_msat will be
- // filled in, so we can safely unwrap it here.
- (19, next_outbound_htlc_limit_msat, (default_value, outbound_capacity_msat.0.unwrap())),
- (20, inbound_capacity_msat, required),
- (22, confirmations_required, option),
- (24, force_close_spend_delay, option),
- (26, is_outbound, required),
- (28, is_channel_ready, required),
- (30, is_usable, required),
- (32, is_public, required),
- (33, inbound_htlc_minimum_msat, option),
- (35, inbound_htlc_maximum_msat, option),
-});
+impl Writeable for ChannelDetails {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
+ // `user_channel_id` used to be a single u64 value. In order to remain backwards compatible with
+ // versions prior to 0.0.113, the u128 is serialized as two separate u64 values.
+ let user_channel_id_low = self.user_channel_id as u64;
+ let user_channel_id_high_opt = Some((self.user_channel_id >> 64) as u64);
+ write_tlv_fields!(writer, {
+ (1, self.inbound_scid_alias, option),
+ (2, self.channel_id, required),
+ (3, self.channel_type, option),
+ (4, self.counterparty, required),
+ (5, self.outbound_scid_alias, option),
+ (6, self.funding_txo, option),
+ (7, self.config, option),
+ (8, self.short_channel_id, option),
+ (9, self.confirmations, option),
+ (10, self.channel_value_satoshis, required),
+ (12, self.unspendable_punishment_reserve, option),
+ (14, user_channel_id_low, required),
+ (16, self.balance_msat, required),
+ (18, self.outbound_capacity_msat, required),
+ // Note that by the time we get past the required read above, outbound_capacity_msat will be
+ // filled in, so we can safely unwrap it here.
+ (19, self.next_outbound_htlc_limit_msat, (default_value, outbound_capacity_msat.0.unwrap() as u64)),
+ (20, self.inbound_capacity_msat, required),
+ (22, self.confirmations_required, option),
+ (24, self.force_close_spend_delay, option),
+ (26, self.is_outbound, required),
+ (28, self.is_channel_ready, required),
+ (30, self.is_usable, required),
+ (32, self.is_public, required),
+ (33, self.inbound_htlc_minimum_msat, option),
+ (35, self.inbound_htlc_maximum_msat, option),
+ (37, user_channel_id_high_opt, option),
+ });
+ Ok(())
+ }
+}
+
+impl Readable for ChannelDetails {
+ fn read<R: Read>(reader: &mut R) -> Result<Self, DecodeError> {
+ init_and_read_tlv_fields!(reader, {
+ (1, inbound_scid_alias, option),
+ (2, channel_id, required),
+ (3, channel_type, option),
+ (4, counterparty, required),
+ (5, outbound_scid_alias, option),
+ (6, funding_txo, option),
+ (7, config, option),
+ (8, short_channel_id, option),
+ (9, confirmations, option),
+ (10, channel_value_satoshis, required),
+ (12, unspendable_punishment_reserve, option),
+ (14, user_channel_id_low, required),
+ (16, balance_msat, required),
+ (18, outbound_capacity_msat, required),
+ // Note that by the time we get past the required read above, outbound_capacity_msat will be
+ // filled in, so we can safely unwrap it here.
+ (19, next_outbound_htlc_limit_msat, (default_value, outbound_capacity_msat.0.unwrap() as u64)),
+ (20, inbound_capacity_msat, required),
+ (22, confirmations_required, option),
+ (24, force_close_spend_delay, option),
+ (26, is_outbound, required),
+ (28, is_channel_ready, required),
+ (30, is_usable, required),
+ (32, is_public, required),
+ (33, inbound_htlc_minimum_msat, option),
+ (35, inbound_htlc_maximum_msat, option),
+ (37, user_channel_id_high_opt, option),
+ });
+
+ // `user_channel_id` used to be a single u64 value. In order to remain backwards compatible with
+ // versions prior to 0.0.113, the u128 is serialized as two separate u64 values.
+ let user_channel_id_low: u64 = user_channel_id_low.0.unwrap();
+ let user_channel_id = user_channel_id_low as u128 +
+ ((user_channel_id_high_opt.unwrap_or(0 as u64) as u128) << 64);
+
+ Ok(Self {
+ inbound_scid_alias,
+ channel_id: channel_id.0.unwrap(),
+ channel_type,
+ counterparty: counterparty.0.unwrap(),
+ outbound_scid_alias,
+ funding_txo,
+ config,
+ short_channel_id,
+ channel_value_satoshis: channel_value_satoshis.0.unwrap(),
+ unspendable_punishment_reserve,
+ user_channel_id,
+ balance_msat: balance_msat.0.unwrap(),
+ outbound_capacity_msat: outbound_capacity_msat.0.unwrap(),
+ next_outbound_htlc_limit_msat: next_outbound_htlc_limit_msat.0.unwrap(),
+ inbound_capacity_msat: inbound_capacity_msat.0.unwrap(),
+ confirmations_required,
+ confirmations,
+ force_close_spend_delay,
+ is_outbound: is_outbound.0.unwrap(),
+ is_channel_ready: is_channel_ready.0.unwrap(),
+ is_usable: is_usable.0.unwrap(),
+ is_public: is_public.0.unwrap(),
+ inbound_htlc_minimum_msat,
+ inbound_htlc_maximum_msat,
+ })
+ }
+}
impl_writeable_tlv_based!(PhantomRouteHints, {
(2, channels, vec_type),
(0, routing, required),
(2, incoming_shared_secret, required),
(4, payment_hash, required),
- (6, amt_to_forward, required),
- (8, outgoing_cltv_value, required)
+ (6, outgoing_amt_msat, required),
+ (8, outgoing_cltv_value, required),
+ (9, incoming_amt_msat, option),
});
impl Readable for ClaimableHTLC {
fn read<R: Read>(reader: &mut R) -> Result<Self, DecodeError> {
- let mut prev_hop = ::util::ser::OptionDeserWrapper(None);
+ let mut prev_hop = crate::util::ser::OptionDeserWrapper(None);
let mut value = 0;
let mut payment_data: Option<msgs::FinalOnionHopData> = None;
let mut cltv_expiry = 0;
let id: u8 = Readable::read(reader)?;
match id {
0 => {
- let mut session_priv: ::util::ser::OptionDeserWrapper<SecretKey> = ::util::ser::OptionDeserWrapper(None);
+ let mut session_priv: crate::util::ser::OptionDeserWrapper<SecretKey> = crate::util::ser::OptionDeserWrapper(None);
let mut first_hop_htlc_msat: u64 = 0;
let mut path = Some(Vec::new());
let mut payment_id = None;
}
Ok(HTLCSource::OutboundRoute {
session_priv: session_priv.0.unwrap(),
- first_hop_htlc_msat: first_hop_htlc_msat,
+ first_hop_htlc_msat,
path: path.unwrap(),
payment_id: payment_id.unwrap(),
payment_secret,
}
impl Writeable for HTLCSource {
- fn write<W: Writer>(&self, writer: &mut W) -> Result<(), ::io::Error> {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), crate::io::Error> {
match self {
HTLCSource::OutboundRoute { ref session_priv, ref first_hop_htlc_msat, ref path, payment_id, payment_secret, payment_params } => {
0u8.write(writer)?;
(1, payment_id_opt, option),
(2, first_hop_htlc_msat, required),
(3, payment_secret, option),
- (4, path, vec_type),
+ (4, *path, vec_type),
(5, payment_params, option),
});
}
}
}
-impl_writeable_tlv_based_enum!(HTLCFailReason,
- (0, LightningError) => {
- (0, err, required),
- },
- (1, Reason) => {
- (0, failure_code, required),
- (2, data, vec_type),
- },
-;);
+impl_writeable_tlv_based!(PendingAddHTLCInfo, {
+ (0, forward_info, required),
+ (1, prev_user_channel_id, (default_value, 0)),
+ (2, prev_short_channel_id, required),
+ (4, prev_htlc_id, required),
+ (6, prev_funding_outpoint, required),
+});
impl_writeable_tlv_based_enum!(HTLCForwardInfo,
- (0, AddHTLC) => {
- (0, forward_info, required),
- (2, prev_short_channel_id, required),
- (4, prev_htlc_id, required),
- (6, prev_funding_outpoint, required),
- },
(1, FailHTLC) => {
(0, htlc_id, required),
(2, err_packet, required),
- },
-;);
+ };
+ (0, AddHTLC)
+);
impl_writeable_tlv_based!(PendingInboundPayment, {
(0, payment_secret, required),
(8, min_value_msat, required),
});
-impl_writeable_tlv_based_enum_upgradable!(PendingOutboundPayment,
- (0, Legacy) => {
- (0, session_privs, required),
- },
- (1, Fulfilled) => {
- (0, session_privs, required),
- (1, payment_hash, option),
- },
- (2, Retryable) => {
- (0, session_privs, required),
- (1, pending_fee_msat, option),
- (2, payment_hash, required),
- (4, payment_secret, option),
- (6, total_msat, required),
- (8, pending_amt_msat, required),
- (10, starting_block_height, required),
- },
- (3, Abandoned) => {
- (0, session_privs, required),
- (2, payment_hash, required),
- },
-);
-
-impl<Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> Writeable for ChannelManager<Signer, M, T, K, F, L>
- where M::Target: chain::Watch<Signer>,
- T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
- F::Target: FeeEstimator,
- L::Target: Logger,
+impl<M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref> Writeable for ChannelManager<M, T, K, F, R, L>
+where
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
+ T::Target: BroadcasterInterface,
+ K::Target: KeysInterface,
+ F::Target: FeeEstimator,
+ R::Target: Router,
+ L::Target: Logger,
{
fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
let _consistency_lock = self.total_consistency_lock.write().unwrap();
best_block.block_hash().write(writer)?;
}
- let channel_state = self.channel_state.lock().unwrap();
- let mut unfunded_channels = 0;
- for (_, channel) in channel_state.by_id.iter() {
- if !channel.is_funding_initiated() {
- unfunded_channels += 1;
+ {
+ let per_peer_state = self.per_peer_state.read().unwrap();
+ let mut unfunded_channels = 0;
+ let mut number_of_channels = 0;
+ for (_, peer_state_mutex) in per_peer_state.iter() {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ number_of_channels += peer_state.channel_by_id.len();
+ for (_, channel) in peer_state.channel_by_id.iter() {
+ if !channel.is_funding_initiated() {
+ unfunded_channels += 1;
+ }
+ }
}
- }
- ((channel_state.by_id.len() - unfunded_channels) as u64).write(writer)?;
- for (_, channel) in channel_state.by_id.iter() {
- if channel.is_funding_initiated() {
- channel.write(writer)?;
+
+ ((number_of_channels - unfunded_channels) as u64).write(writer)?;
+
+ for (_, peer_state_mutex) in per_peer_state.iter() {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ for (_, channel) in peer_state.channel_by_id.iter() {
+ if channel.is_funding_initiated() {
+ channel.write(writer)?;
+ }
+ }
}
}
- (channel_state.forward_htlcs.len() as u64).write(writer)?;
- for (short_channel_id, pending_forwards) in channel_state.forward_htlcs.iter() {
- short_channel_id.write(writer)?;
- (pending_forwards.len() as u64).write(writer)?;
- for forward in pending_forwards {
- forward.write(writer)?;
+ {
+ let forward_htlcs = self.forward_htlcs.lock().unwrap();
+ (forward_htlcs.len() as u64).write(writer)?;
+ for (short_channel_id, pending_forwards) in forward_htlcs.iter() {
+ short_channel_id.write(writer)?;
+ (pending_forwards.len() as u64).write(writer)?;
+ for forward in pending_forwards {
+ forward.write(writer)?;
+ }
}
}
+ let pending_inbound_payments = self.pending_inbound_payments.lock().unwrap();
+ let claimable_payments = self.claimable_payments.lock().unwrap();
+ let pending_outbound_payments = self.pending_outbound_payments.pending_outbound_payments.lock().unwrap();
+
let mut htlc_purposes: Vec<&events::PaymentPurpose> = Vec::new();
- (channel_state.claimable_htlcs.len() as u64).write(writer)?;
- for (payment_hash, (purpose, previous_hops)) in channel_state.claimable_htlcs.iter() {
+ (claimable_payments.claimable_htlcs.len() as u64).write(writer)?;
+ for (payment_hash, (purpose, previous_hops)) in claimable_payments.claimable_htlcs.iter() {
payment_hash.write(writer)?;
(previous_hops.len() as u64).write(writer)?;
for htlc in previous_hops.iter() {
peer_state.latest_features.write(writer)?;
}
- let pending_inbound_payments = self.pending_inbound_payments.lock().unwrap();
- let pending_outbound_payments = self.pending_outbound_payments.lock().unwrap();
let events = self.pending_events.lock().unwrap();
(events.len() as u64).write(writer)?;
for event in events.iter() {
}
}
- (self.last_node_announcement_serial.load(Ordering::Acquire) as u32).write(writer)?;
+ // Prior to 0.0.111 we tracked node_announcement serials here, however that now happens in
+ // `PeerManager`, and thus we simply write the `highest_seen_timestamp` twice, which is
+ // likely to be identical.
+ (self.highest_seen_timestamp.load(Ordering::Acquire) as u32).write(writer)?;
(self.highest_seen_timestamp.load(Ordering::Acquire) as u32).write(writer)?;
(pending_inbound_payments.len() as u64).write(writer)?;
_ => {},
}
}
+
+ let mut pending_intercepted_htlcs = None;
+ let our_pending_intercepts = self.pending_intercepted_htlcs.lock().unwrap();
+ if our_pending_intercepts.len() != 0 {
+ pending_intercepted_htlcs = Some(our_pending_intercepts);
+ }
+
+ let mut pending_claiming_payments = Some(&claimable_payments.pending_claiming_payments);
+ if pending_claiming_payments.as_ref().unwrap().is_empty() {
+ // LDK versions prior to 0.0.113 do not know how to read the pending claimed payments
+ // map. Thus, if there are no entries we skip writing a TLV for it.
+ pending_claiming_payments = None;
+ } else {
+ debug_assert!(false, "While we have code to serialize pending_claiming_payments, the map should always be empty until a later PR");
+ }
+
write_tlv_fields!(writer, {
(1, pending_outbound_payments_no_retry, required),
+ (2, pending_intercepted_htlcs, option),
(3, pending_outbound_payments, required),
+ (4, pending_claiming_payments, option),
(5, self.our_network_pubkey, required),
(7, self.fake_scid_rand_bytes, required),
(9, htlc_purposes, vec_type),
+ (11, self.probing_cookie_secret, required),
});
Ok(())
/// which you've already broadcasted the transaction.
///
/// [`ChainMonitor`]: crate::chain::chainmonitor::ChainMonitor
-pub struct ChannelManagerReadArgs<'a, Signer: 'a + Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
- where M::Target: chain::Watch<Signer>,
- T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
- F::Target: FeeEstimator,
- L::Target: Logger,
+pub struct ChannelManagerReadArgs<'a, M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref>
+where
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
+ T::Target: BroadcasterInterface,
+ K::Target: KeysInterface,
+ F::Target: FeeEstimator,
+ R::Target: Router,
+ L::Target: Logger,
{
/// The keys provider which will give us relevant keys. Some keys will be loaded during
/// deserialization and KeysInterface::read_chan_signer will be used to read per-Channel
/// used to broadcast the latest local commitment transactions of channels which must be
/// force-closed during deserialization.
pub tx_broadcaster: T,
+ /// The router which will be used in the ChannelManager in the future for finding routes
+ /// on-the-fly for trampoline payments. Absent in private nodes that don't support forwarding.
+ ///
+ /// No calls to the router will be made during deserialization.
+ pub router: R,
/// The Logger for use in the ChannelManager and which may be used to log information during
/// deserialization.
pub logger: L,
/// this struct.
///
/// (C-not exported) because we have no HashMap bindings
- pub channel_monitors: HashMap<OutPoint, &'a mut ChannelMonitor<Signer>>,
+ pub channel_monitors: HashMap<OutPoint, &'a mut ChannelMonitor<<K::Target as SignerProvider>::Signer>>,
}
-impl<'a, Signer: 'a + Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
- ChannelManagerReadArgs<'a, Signer, M, T, K, F, L>
- where M::Target: chain::Watch<Signer>,
- T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
- F::Target: FeeEstimator,
- L::Target: Logger,
- {
+impl<'a, M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref>
+ ChannelManagerReadArgs<'a, M, T, K, F, R, L>
+where
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
+ T::Target: BroadcasterInterface,
+ K::Target: KeysInterface,
+ F::Target: FeeEstimator,
+ R::Target: Router,
+ L::Target: Logger,
+{
/// Simple utility function to create a ChannelManagerReadArgs which creates the monitor
/// HashMap for you. This is primarily useful for C bindings where it is not practical to
/// populate a HashMap directly from C.
- pub fn new(keys_manager: K, fee_estimator: F, chain_monitor: M, tx_broadcaster: T, logger: L, default_config: UserConfig,
- mut channel_monitors: Vec<&'a mut ChannelMonitor<Signer>>) -> Self {
+ pub fn new(keys_manager: K, fee_estimator: F, chain_monitor: M, tx_broadcaster: T, router: R, logger: L, default_config: UserConfig,
+ mut channel_monitors: Vec<&'a mut ChannelMonitor<<K::Target as SignerProvider>::Signer>>) -> Self {
Self {
- keys_manager, fee_estimator, chain_monitor, tx_broadcaster, logger, default_config,
+ keys_manager, fee_estimator, chain_monitor, tx_broadcaster, router, logger, default_config,
channel_monitors: channel_monitors.drain(..).map(|monitor| { (monitor.get_funding_txo().0, monitor) }).collect()
}
}
// Implement ReadableArgs for an Arc'd ChannelManager to make it a bit easier to work with the
// SipmleArcChannelManager type:
-impl<'a, Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
- ReadableArgs<ChannelManagerReadArgs<'a, Signer, M, T, K, F, L>> for (BlockHash, Arc<ChannelManager<Signer, M, T, K, F, L>>)
- where M::Target: chain::Watch<Signer>,
- T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
- F::Target: FeeEstimator,
- L::Target: Logger,
+impl<'a, M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref>
+ ReadableArgs<ChannelManagerReadArgs<'a, M, T, K, F, R, L>> for (BlockHash, Arc<ChannelManager<M, T, K, F, R, L>>)
+where
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
+ T::Target: BroadcasterInterface,
+ K::Target: KeysInterface,
+ F::Target: FeeEstimator,
+ R::Target: Router,
+ L::Target: Logger,
{
- fn read<R: io::Read>(reader: &mut R, args: ChannelManagerReadArgs<'a, Signer, M, T, K, F, L>) -> Result<Self, DecodeError> {
- let (blockhash, chan_manager) = <(BlockHash, ChannelManager<Signer, M, T, K, F, L>)>::read(reader, args)?;
+ fn read<Reader: io::Read>(reader: &mut Reader, args: ChannelManagerReadArgs<'a, M, T, K, F, R, L>) -> Result<Self, DecodeError> {
+ let (blockhash, chan_manager) = <(BlockHash, ChannelManager<M, T, K, F, R, L>)>::read(reader, args)?;
Ok((blockhash, Arc::new(chan_manager)))
}
}
-impl<'a, Signer: Sign, M: Deref, T: Deref, K: Deref, F: Deref, L: Deref>
- ReadableArgs<ChannelManagerReadArgs<'a, Signer, M, T, K, F, L>> for (BlockHash, ChannelManager<Signer, M, T, K, F, L>)
- where M::Target: chain::Watch<Signer>,
- T::Target: BroadcasterInterface,
- K::Target: KeysInterface<Signer = Signer>,
- F::Target: FeeEstimator,
- L::Target: Logger,
+impl<'a, M: Deref, T: Deref, K: Deref, F: Deref, R: Deref, L: Deref>
+ ReadableArgs<ChannelManagerReadArgs<'a, M, T, K, F, R, L>> for (BlockHash, ChannelManager<M, T, K, F, R, L>)
+where
+ M::Target: chain::Watch<<K::Target as SignerProvider>::Signer>,
+ T::Target: BroadcasterInterface,
+ K::Target: KeysInterface,
+ F::Target: FeeEstimator,
+ R::Target: Router,
+ L::Target: Logger,
{
- fn read<R: io::Read>(reader: &mut R, mut args: ChannelManagerReadArgs<'a, Signer, M, T, K, F, L>) -> Result<Self, DecodeError> {
+ fn read<Reader: io::Read>(reader: &mut Reader, mut args: ChannelManagerReadArgs<'a, M, T, K, F, R, L>) -> Result<Self, DecodeError> {
let _ver = read_ver_prefix!(reader, SERIALIZATION_VERSION);
let genesis_hash: BlockHash = Readable::read(reader)?;
let channel_count: u64 = Readable::read(reader)?;
let mut funding_txo_set = HashSet::with_capacity(cmp::min(channel_count as usize, 128));
- let mut by_id = HashMap::with_capacity(cmp::min(channel_count as usize, 128));
- let mut short_to_id = HashMap::with_capacity(cmp::min(channel_count as usize, 128));
+ let mut peer_channels: HashMap<PublicKey, HashMap<[u8; 32], Channel<<K::Target as SignerProvider>::Signer>>> = HashMap::with_capacity(cmp::min(channel_count as usize, 128));
+ let mut id_to_peer = HashMap::with_capacity(cmp::min(channel_count as usize, 128));
+ let mut short_to_chan_info = HashMap::with_capacity(cmp::min(channel_count as usize, 128));
let mut channel_closures = Vec::new();
for _ in 0..channel_count {
- let mut channel: Channel<Signer> = Channel::read(reader, (&args.keys_manager, best_block_height))?;
+ let mut channel: Channel<<K::Target as SignerProvider>::Signer> = Channel::read(reader, (&args.keys_manager, best_block_height))?;
let funding_txo = channel.get_funding_txo().ok_or(DecodeError::InvalidValue)?;
funding_txo_set.insert(funding_txo.clone());
if let Some(ref mut monitor) = args.channel_monitors.get_mut(&funding_txo) {
user_channel_id: channel.get_user_id(),
reason: ClosureReason::OutdatedChannelManager
});
+ for (channel_htlc_source, payment_hash) in channel.inflight_htlc_sources() {
+ let mut found_htlc = false;
+ for (monitor_htlc_source, _) in monitor.get_all_current_outbound_htlcs() {
+ if *channel_htlc_source == monitor_htlc_source { found_htlc = true; break; }
+ }
+ if !found_htlc {
+ // If we have some HTLCs in the channel which are not present in the newer
+ // ChannelMonitor, they have been removed and should be failed back to
+ // ensure we don't forget them entirely. Note that if the missing HTLC(s)
+ // were actually claimed we'd have generated and ensured the previous-hop
+ // claim update ChannelMonitor updates were persisted prior to persising
+ // the ChannelMonitor update for the forward leg, so attempting to fail the
+ // backwards leg of the HTLC will simply be rejected.
+ log_info!(args.logger,
+ "Failing HTLC with hash {} as it is missing in the ChannelMonitor for channel {} but was present in the (stale) ChannelManager",
+ log_bytes!(channel.channel_id()), log_bytes!(payment_hash.0));
+ failed_htlcs.push((channel_htlc_source.clone(), *payment_hash, channel.get_counterparty_node_id(), channel.channel_id()));
+ }
+ }
} else {
log_info!(args.logger, "Successfully loaded channel {}", log_bytes!(channel.channel_id()));
if let Some(short_channel_id) = channel.get_short_channel_id() {
- short_to_id.insert(short_channel_id, channel.channel_id());
+ short_to_chan_info.insert(short_channel_id, (channel.get_counterparty_node_id(), channel.channel_id()));
+ }
+ if channel.is_funding_initiated() {
+ id_to_peer.insert(channel.channel_id(), channel.get_counterparty_node_id());
+ }
+ match peer_channels.entry(channel.get_counterparty_node_id()) {
+ hash_map::Entry::Occupied(mut entry) => {
+ let by_id_map = entry.get_mut();
+ by_id_map.insert(channel.channel_id(), channel);
+ },
+ hash_map::Entry::Vacant(entry) => {
+ let mut by_id_map = HashMap::new();
+ by_id_map.insert(channel.channel_id(), channel);
+ entry.insert(by_id_map);
+ }
}
- by_id.insert(channel.channel_id(), channel);
}
+ } else if channel.is_awaiting_initial_mon_persist() {
+ // If we were persisted and shut down while the initial ChannelMonitor persistence
+ // was in-progress, we never broadcasted the funding transaction and can still
+ // safely discard the channel.
+ let _ = channel.force_shutdown(false);
+ channel_closures.push(events::Event::ChannelClosed {
+ channel_id: channel.channel_id(),
+ user_channel_id: channel.get_user_id(),
+ reason: ClosureReason::DisconnectedPeer,
+ });
} else {
log_error!(args.logger, "Missing ChannelMonitor for channel {} needed by ChannelManager.", log_bytes!(channel.channel_id()));
log_error!(args.logger, " The chain::Watch API *requires* that monitors are persisted durably before returning,");
}
let peer_count: u64 = Readable::read(reader)?;
- let mut per_peer_state = HashMap::with_capacity(cmp::min(peer_count as usize, MAX_ALLOC_SIZE/mem::size_of::<(PublicKey, Mutex<PeerState>)>()));
+ let mut per_peer_state = HashMap::with_capacity(cmp::min(peer_count as usize, MAX_ALLOC_SIZE/mem::size_of::<(PublicKey, Mutex<PeerState<<K::Target as SignerProvider>::Signer>>)>()));
for _ in 0..peer_count {
let peer_pubkey = Readable::read(reader)?;
let peer_state = PeerState {
+ channel_by_id: peer_channels.remove(&peer_pubkey).unwrap_or(HashMap::new()),
latest_features: Readable::read(reader)?,
};
per_peer_state.insert(peer_pubkey, Mutex::new(peer_state));
None => continue,
}
}
- if forward_htlcs_count > 0 {
- // If we have pending HTLCs to forward, assume we either dropped a
- // `PendingHTLCsForwardable` or the user received it but never processed it as they
- // shut down before the timer hit. Either way, set the time_forwardable to a small
- // constant as enough time has likely passed that we should simply handle the forwards
- // now, or at least after the user gets a chance to reconnect to our peers.
- pending_events_read.push(events::Event::PendingHTLCsForwardable {
- time_forwardable: Duration::from_secs(2),
- });
- }
let background_event_count: u64 = Readable::read(reader)?;
let mut pending_background_events_read: Vec<BackgroundEvent> = Vec::with_capacity(cmp::min(background_event_count as usize, MAX_ALLOC_SIZE/mem::size_of::<BackgroundEvent>()));
}
}
- let last_node_announcement_serial: u32 = Readable::read(reader)?;
+ let _last_node_announcement_serial: u32 = Readable::read(reader)?; // Only used < 0.0.111
let highest_seen_timestamp: u32 = Readable::read(reader)?;
let pending_inbound_payment_count: u64 = Readable::read(reader)?;
// pending_outbound_payments_no_retry is for compatibility with 0.0.101 clients.
let mut pending_outbound_payments_no_retry: Option<HashMap<PaymentId, HashSet<[u8; 32]>>> = None;
let mut pending_outbound_payments = None;
+ let mut pending_intercepted_htlcs: Option<HashMap<InterceptId, PendingAddHTLCInfo>> = Some(HashMap::new());
let mut received_network_pubkey: Option<PublicKey> = None;
let mut fake_scid_rand_bytes: Option<[u8; 32]> = None;
+ let mut probing_cookie_secret: Option<[u8; 32]> = None;
let mut claimable_htlc_purposes = None;
+ let mut pending_claiming_payments = Some(HashMap::new());
read_tlv_fields!(reader, {
(1, pending_outbound_payments_no_retry, option),
+ (2, pending_intercepted_htlcs, option),
(3, pending_outbound_payments, option),
+ (4, pending_claiming_payments, option),
(5, received_network_pubkey, option),
(7, fake_scid_rand_bytes, option),
(9, claimable_htlc_purposes, vec_type),
+ (11, probing_cookie_secret, option),
});
if fake_scid_rand_bytes.is_none() {
fake_scid_rand_bytes = Some(args.keys_manager.get_secure_random_bytes());
}
+ if probing_cookie_secret.is_none() {
+ probing_cookie_secret = Some(args.keys_manager.get_secure_random_bytes());
+ }
+
if pending_outbound_payments.is_none() && pending_outbound_payments_no_retry.is_none() {
pending_outbound_payments = Some(pending_outbound_payments_compat);
} else if pending_outbound_payments.is_none() {
// We only rebuild the pending payments map if we were most recently serialized by
// 0.0.102+
for (_, monitor) in args.channel_monitors.iter() {
- if by_id.get(&monitor.get_funding_txo().0.to_channel_id()).is_none() {
+ if id_to_peer.get(&monitor.get_funding_txo().0.to_channel_id()).is_none() {
for (htlc_source, htlc) in monitor.get_pending_outbound_htlcs() {
if let HTLCSource::OutboundRoute { payment_id, session_priv, path, payment_secret, .. } = htlc_source {
if path.is_empty() {
}
}
}
+ for (htlc_source, htlc) in monitor.get_all_current_outbound_htlcs() {
+ if let HTLCSource::PreviousHopData(prev_hop_data) = htlc_source {
+ let pending_forward_matches_htlc = |info: &PendingAddHTLCInfo| {
+ info.prev_funding_outpoint == prev_hop_data.outpoint &&
+ info.prev_htlc_id == prev_hop_data.htlc_id
+ };
+ // The ChannelMonitor is now responsible for this HTLC's
+ // failure/success and will let us know what its outcome is. If we
+ // still have an entry for this HTLC in `forward_htlcs` or
+ // `pending_intercepted_htlcs`, we were apparently not persisted after
+ // the monitor was when forwarding the payment.
+ forward_htlcs.retain(|_, forwards| {
+ forwards.retain(|forward| {
+ if let HTLCForwardInfo::AddHTLC(htlc_info) = forward {
+ if pending_forward_matches_htlc(&htlc_info) {
+ log_info!(args.logger, "Removing pending to-forward HTLC with hash {} as it was forwarded to the closed channel {}",
+ log_bytes!(htlc.payment_hash.0), log_bytes!(monitor.get_funding_txo().0.to_channel_id()));
+ false
+ } else { true }
+ } else { true }
+ });
+ !forwards.is_empty()
+ });
+ pending_intercepted_htlcs.as_mut().unwrap().retain(|intercepted_id, htlc_info| {
+ if pending_forward_matches_htlc(&htlc_info) {
+ log_info!(args.logger, "Removing pending intercepted HTLC with hash {} as it was forwarded to the closed channel {}",
+ log_bytes!(htlc.payment_hash.0), log_bytes!(monitor.get_funding_txo().0.to_channel_id()));
+ pending_events_read.retain(|event| {
+ if let Event::HTLCIntercepted { intercept_id: ev_id, .. } = event {
+ intercepted_id != ev_id
+ } else { true }
+ });
+ false
+ } else { true }
+ });
+ }
+ }
}
}
}
+ if !forward_htlcs.is_empty() {
+ // If we have pending HTLCs to forward, assume we either dropped a
+ // `PendingHTLCsForwardable` or the user received it but never processed it as they
+ // shut down before the timer hit. Either way, set the time_forwardable to a small
+ // constant as enough time has likely passed that we should simply handle the forwards
+ // now, or at least after the user gets a chance to reconnect to our peers.
+ pending_events_read.push(events::Event::PendingHTLCsForwardable {
+ time_forwardable: Duration::from_secs(2),
+ });
+ }
+
let inbound_pmt_key_material = args.keys_manager.get_inbound_payment_key_material();
let expanded_inbound_key = inbound_payment::ExpandedKey::new(&inbound_pmt_key_material);
}
let mut outbound_scid_aliases = HashSet::new();
- for (chan_id, chan) in by_id.iter_mut() {
- if chan.outbound_scid_alias() == 0 {
- let mut outbound_scid_alias;
- loop {
- outbound_scid_alias = fake_scid::Namespace::OutboundAlias
- .get_fake_scid(best_block_height, &genesis_hash, fake_scid_rand_bytes.as_ref().unwrap(), &args.keys_manager);
- if outbound_scid_aliases.insert(outbound_scid_alias) { break; }
- }
- chan.set_outbound_scid_alias(outbound_scid_alias);
- } else if !outbound_scid_aliases.insert(chan.outbound_scid_alias()) {
- // Note that in rare cases its possible to hit this while reading an older
- // channel if we just happened to pick a colliding outbound alias above.
- log_error!(args.logger, "Got duplicate outbound SCID alias; {}", chan.outbound_scid_alias());
- return Err(DecodeError::InvalidValue);
- }
- if chan.is_usable() {
- if short_to_id.insert(chan.outbound_scid_alias(), *chan_id).is_some() {
+ for (_peer_node_id, peer_state_mutex) in per_peer_state.iter_mut() {
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ for (chan_id, chan) in peer_state.channel_by_id.iter_mut() {
+ if chan.outbound_scid_alias() == 0 {
+ let mut outbound_scid_alias;
+ loop {
+ outbound_scid_alias = fake_scid::Namespace::OutboundAlias
+ .get_fake_scid(best_block_height, &genesis_hash, fake_scid_rand_bytes.as_ref().unwrap(), &args.keys_manager);
+ if outbound_scid_aliases.insert(outbound_scid_alias) { break; }
+ }
+ chan.set_outbound_scid_alias(outbound_scid_alias);
+ } else if !outbound_scid_aliases.insert(chan.outbound_scid_alias()) {
// Note that in rare cases its possible to hit this while reading an older
// channel if we just happened to pick a colliding outbound alias above.
log_error!(args.logger, "Got duplicate outbound SCID alias; {}", chan.outbound_scid_alias());
return Err(DecodeError::InvalidValue);
}
+ if chan.is_usable() {
+ if short_to_chan_info.insert(chan.outbound_scid_alias(), (chan.get_counterparty_node_id(), *chan_id)).is_some() {
+ // Note that in rare cases its possible to hit this while reading an older
+ // channel if we just happened to pick a colliding outbound alias above.
+ log_error!(args.logger, "Got duplicate outbound SCID alias; {}", chan.outbound_scid_alias());
+ return Err(DecodeError::InvalidValue);
+ }
+ }
}
}
+ let bounded_fee_estimator = LowerBoundedFeeEstimator::new(args.fee_estimator);
+
for (_, monitor) in args.channel_monitors.iter() {
for (payment_hash, payment_preimage) in monitor.get_stored_preimages() {
if let Some((payment_purpose, claimable_htlcs)) = claimable_htlcs.remove(&payment_hash) {
log_info!(args.logger, "Re-claiming HTLCs with payment hash {} as we've released the preimage to a ChannelMonitor!", log_bytes!(payment_hash.0));
let mut claimable_amt_msat = 0;
+ let mut receiver_node_id = Some(our_network_pubkey);
+ let phantom_shared_secret = claimable_htlcs[0].prev_hop.phantom_shared_secret;
+ if phantom_shared_secret.is_some() {
+ let phantom_pubkey = args.keys_manager.get_node_id(Recipient::PhantomNode)
+ .expect("Failed to get node_id for phantom node recipient");
+ receiver_node_id = Some(phantom_pubkey)
+ }
for claimable_htlc in claimable_htlcs {
claimable_amt_msat += claimable_htlc.value;
// without the new monitor persisted - we'll end up right back here on
// restart.
let previous_channel_id = claimable_htlc.prev_hop.outpoint.to_channel_id();
- if let Some(channel) = by_id.get_mut(&previous_channel_id) {
- channel.claim_htlc_while_disconnected_dropping_mon_update(claimable_htlc.prev_hop.htlc_id, payment_preimage, &args.logger);
+ if let Some(peer_node_id) = id_to_peer.get(&previous_channel_id){
+ let peer_state_mutex = per_peer_state.get(peer_node_id).unwrap();
+ let mut peer_state_lock = peer_state_mutex.lock().unwrap();
+ let peer_state = &mut *peer_state_lock;
+ if let Some(channel) = peer_state.channel_by_id.get_mut(&previous_channel_id) {
+ channel.claim_htlc_while_disconnected_dropping_mon_update(claimable_htlc.prev_hop.htlc_id, payment_preimage, &args.logger);
+ }
}
if let Some(previous_hop_monitor) = args.channel_monitors.get(&claimable_htlc.prev_hop.outpoint) {
- previous_hop_monitor.provide_payment_preimage(&payment_hash, &payment_preimage, &args.tx_broadcaster, &args.fee_estimator, &args.logger);
+ previous_hop_monitor.provide_payment_preimage(&payment_hash, &payment_preimage, &args.tx_broadcaster, &bounded_fee_estimator, &args.logger);
}
}
pending_events_read.push(events::Event::PaymentClaimed {
+ receiver_node_id,
payment_hash,
purpose: payment_purpose,
amount_msat: claimable_amt_msat,
let channel_manager = ChannelManager {
genesis_hash,
- fee_estimator: args.fee_estimator,
+ fee_estimator: bounded_fee_estimator,
chain_monitor: args.chain_monitor,
tx_broadcaster: args.tx_broadcaster,
+ router: args.router,
best_block: RwLock::new(BestBlock::new(best_block_hash, best_block_height)),
channel_state: Mutex::new(ChannelHolder {
- by_id,
- short_to_id,
- forward_htlcs,
- claimable_htlcs,
pending_msg_events: Vec::new(),
}),
inbound_payment_key: expanded_inbound_key,
pending_inbound_payments: Mutex::new(pending_inbound_payments),
- pending_outbound_payments: Mutex::new(pending_outbound_payments.unwrap()),
+ pending_outbound_payments: OutboundPayments { pending_outbound_payments: Mutex::new(pending_outbound_payments.unwrap()) },
+ pending_intercepted_htlcs: Mutex::new(pending_intercepted_htlcs.unwrap()),
+ forward_htlcs: Mutex::new(forward_htlcs),
+ claimable_payments: Mutex::new(ClaimablePayments { claimable_htlcs, pending_claiming_payments: pending_claiming_payments.unwrap() }),
outbound_scid_aliases: Mutex::new(outbound_scid_aliases),
+ id_to_peer: Mutex::new(id_to_peer),
+ short_to_chan_info: FairRwLock::new(short_to_chan_info),
fake_scid_rand_bytes: fake_scid_rand_bytes.unwrap(),
+ probing_cookie_secret: probing_cookie_secret.unwrap(),
+
our_network_key,
our_network_pubkey,
secp_ctx,
- last_node_announcement_serial: AtomicUsize::new(last_node_announcement_serial as usize),
highest_seen_timestamp: AtomicUsize::new(highest_seen_timestamp as usize),
- per_peer_state: RwLock::new(per_peer_state),
+ per_peer_state: FairRwLock::new(per_peer_state),
pending_events: Mutex::new(pending_events_read),
pending_background_events: Mutex::new(pending_background_events_read),
total_consistency_lock: RwLock::new(()),
- persistence_notifier: PersistenceNotifier::new(),
+ persistence_notifier: Notifier::new(),
keys_manager: args.keys_manager,
logger: args.logger,
};
for htlc_source in failed_htlcs.drain(..) {
- channel_manager.fail_htlc_backwards_internal(channel_manager.channel_state.lock().unwrap(), htlc_source.0, &htlc_source.1, HTLCFailReason::Reason { failure_code: 0x4000 | 8, data: Vec::new() });
+ let (source, payment_hash, counterparty_node_id, channel_id) = htlc_source;
+ let receiver = HTLCDestination::NextHopChannel { node_id: Some(counterparty_node_id), channel_id };
+ let reason = HTLCFailReason::from_failure_code(0x4000 | 8);
+ channel_manager.fail_htlc_backwards_internal(&source, &payment_hash, &reason, receiver);
}
//TODO: Broadcast channel update for closed channels, but only after we've made a
use bitcoin::hashes::sha256::Hash as Sha256;
use core::time::Duration;
use core::sync::atomic::Ordering;
- use ln::{PaymentPreimage, PaymentHash, PaymentSecret};
- use ln::channelmanager::{PaymentId, PaymentSendFailure};
- use ln::channelmanager::inbound_payment;
- use ln::features::InitFeatures;
- use ln::functional_test_utils::*;
- use ln::msgs;
- use ln::msgs::ChannelMessageHandler;
- use routing::router::{PaymentParameters, RouteParameters, find_route};
- use util::errors::APIError;
- use util::events::{Event, MessageSendEvent, MessageSendEventsProvider};
- use util::test_utils;
- use chain::keysinterface::KeysInterface;
-
- #[cfg(feature = "std")]
- #[test]
- fn test_wait_timeout() {
- use ln::channelmanager::PersistenceNotifier;
- use sync::Arc;
- use core::sync::atomic::AtomicBool;
- use std::thread;
-
- let persistence_notifier = Arc::new(PersistenceNotifier::new());
- let thread_notifier = Arc::clone(&persistence_notifier);
-
- let exit_thread = Arc::new(AtomicBool::new(false));
- let exit_thread_clone = exit_thread.clone();
- thread::spawn(move || {
- loop {
- let &(ref persist_mtx, ref cnd) = &thread_notifier.persistence_lock;
- let mut persistence_lock = persist_mtx.lock().unwrap();
- *persistence_lock = true;
- cnd.notify_all();
-
- if exit_thread_clone.load(Ordering::SeqCst) {
- break
- }
- }
- });
-
- // Check that we can block indefinitely until updates are available.
- let _ = persistence_notifier.wait();
-
- // Check that the PersistenceNotifier will return after the given duration if updates are
- // available.
- loop {
- if persistence_notifier.wait_timeout(Duration::from_millis(100)) {
- break
- }
- }
-
- exit_thread.store(true, Ordering::SeqCst);
-
- // Check that the PersistenceNotifier will return after the given duration even if no updates
- // are available.
- loop {
- if !persistence_notifier.wait_timeout(Duration::from_millis(100)) {
- break
- }
- }
- }
+ use crate::ln::{PaymentPreimage, PaymentHash, PaymentSecret};
+ use crate::ln::channelmanager::{self, inbound_payment, PaymentId, PaymentSendFailure};
+ use crate::ln::functional_test_utils::*;
+ use crate::ln::msgs;
+ use crate::ln::msgs::ChannelMessageHandler;
+ use crate::routing::router::{PaymentParameters, RouteParameters, find_route};
+ use crate::util::errors::APIError;
+ use crate::util::events::{Event, HTLCDestination, MessageSendEvent, MessageSendEventsProvider, ClosureReason};
+ use crate::util::test_utils;
+ use crate::chain::keysinterface::{EntropySource, KeysInterface};
#[test]
fn test_notify_limits() {
assert!(nodes[1].node.await_persistable_update_timeout(Duration::from_millis(1)));
assert!(nodes[2].node.await_persistable_update_timeout(Duration::from_millis(1)));
- let mut chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+ let mut chan = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
// We check that the channel info nodes have doesn't change too early, even though we try
// to connect messages with new values
let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
- create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+ create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
// First, send a partial MPP payment.
let (route, our_payment_hash, payment_preimage, payment_secret) = get_route_and_payment_hash!(&nodes[0], nodes[1], 100_000);
+ let mut mpp_route = route.clone();
+ mpp_route.paths.push(mpp_route.paths[0].clone());
+
let payment_id = PaymentId([42; 32]);
// Use the utility function send_payment_along_path to send the payment with MPP data which
// indicates there are more HTLCs coming.
let cur_height = CHAN_CONFIRM_DEPTH + 1; // route_payment calls send_payment, which adds 1 to the current height. So we do the same here to match.
- nodes[0].node.send_payment_along_path(&route.paths[0], &route.payment_params, &our_payment_hash, &Some(payment_secret), 200_000, cur_height, payment_id, &None).unwrap();
+ let session_privs = nodes[0].node.test_add_new_pending_payment(our_payment_hash, Some(payment_secret), payment_id, &mpp_route).unwrap();
+ nodes[0].node.send_payment_along_path(&mpp_route.paths[0], &route.payment_params, &our_payment_hash, &Some(payment_secret), 200_000, cur_height, payment_id, &None, session_privs[0]).unwrap();
check_added_monitors!(nodes[0], 1);
let mut events = nodes[0].node.get_and_clear_pending_msg_events();
assert_eq!(events.len(), 1);
pass_along_path(&nodes[0], &[&nodes[1]], 200_000, our_payment_hash, Some(payment_secret), events.drain(..).next().unwrap(), false, None);
// Next, send a keysend payment with the same payment_hash and make sure it fails.
- nodes[0].node.send_spontaneous_payment(&route, Some(payment_preimage)).unwrap();
+ nodes[0].node.send_spontaneous_payment(&route, Some(payment_preimage), PaymentId(payment_preimage.0)).unwrap();
check_added_monitors!(nodes[0], 1);
let mut events = nodes[0].node.get_and_clear_pending_msg_events();
assert_eq!(events.len(), 1);
check_added_monitors!(nodes[1], 0);
commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
expect_pending_htlcs_forwardable!(nodes[1]);
- expect_pending_htlcs_forwardable!(nodes[1]);
+ expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::FailedPayment { payment_hash: our_payment_hash }]);
check_added_monitors!(nodes[1], 1);
let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
assert!(updates.update_add_htlcs.is_empty());
expect_payment_failed!(nodes[0], our_payment_hash, true);
// Send the second half of the original MPP payment.
- nodes[0].node.send_payment_along_path(&route.paths[0], &route.payment_params, &our_payment_hash, &Some(payment_secret), 200_000, cur_height, payment_id, &None).unwrap();
+ nodes[0].node.send_payment_along_path(&mpp_route.paths[1], &route.payment_params, &our_payment_hash, &Some(payment_secret), 200_000, cur_height, payment_id, &None, session_privs[1]).unwrap();
check_added_monitors!(nodes[0], 1);
let mut events = nodes[0].node.get_and_clear_pending_msg_events();
assert_eq!(events.len(), 1);
let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
- create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+ create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
let scorer = test_utils::TestScorer::with_penalty(0);
let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
final_cltv_expiry_delta: TEST_FINAL_CLTV,
};
let route = find_route(
- &nodes[0].node.get_our_node_id(), &route_params, nodes[0].network_graph, None,
- nodes[0].logger, &scorer, &random_seed_bytes
+ &nodes[0].node.get_our_node_id(), &route_params, &nodes[0].network_graph,
+ None, nodes[0].logger, &scorer, &random_seed_bytes
).unwrap();
- nodes[0].node.send_spontaneous_payment(&route, Some(payment_preimage)).unwrap();
+ nodes[0].node.send_spontaneous_payment(&route, Some(payment_preimage), PaymentId(payment_preimage.0)).unwrap();
check_added_monitors!(nodes[0], 1);
let mut events = nodes[0].node.get_and_clear_pending_msg_events();
assert_eq!(events.len(), 1);
nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
check_added_monitors!(nodes[1], 0);
commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
+ // We have to forward pending HTLCs twice - once tries to forward the payment forward (and
+ // fails), the second will process the resulting failure and fail the HTLC backward
expect_pending_htlcs_forwardable!(nodes[1]);
- expect_pending_htlcs_forwardable!(nodes[1]);
+ expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::FailedPayment { payment_hash }]);
check_added_monitors!(nodes[1], 1);
let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
assert!(updates.update_add_htlcs.is_empty());
// To start (2), send a keysend payment but don't claim it.
let payment_preimage = PaymentPreimage([42; 32]);
let route = find_route(
- &nodes[0].node.get_our_node_id(), &route_params, nodes[0].network_graph, None,
- nodes[0].logger, &scorer, &random_seed_bytes
+ &nodes[0].node.get_our_node_id(), &route_params, &nodes[0].network_graph,
+ None, nodes[0].logger, &scorer, &random_seed_bytes
).unwrap();
- let (payment_hash, _) = nodes[0].node.send_spontaneous_payment(&route, Some(payment_preimage)).unwrap();
+ let payment_hash = nodes[0].node.send_spontaneous_payment(&route, Some(payment_preimage), PaymentId(payment_preimage.0)).unwrap();
check_added_monitors!(nodes[0], 1);
let mut events = nodes[0].node.get_and_clear_pending_msg_events();
assert_eq!(events.len(), 1);
// Next, attempt a regular payment and make sure it fails.
let payment_secret = PaymentSecret([43; 32]);
- nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
+ nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret), PaymentId(payment_hash.0)).unwrap();
check_added_monitors!(nodes[0], 1);
let mut events = nodes[0].node.get_and_clear_pending_msg_events();
assert_eq!(events.len(), 1);
check_added_monitors!(nodes[1], 0);
commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
expect_pending_htlcs_forwardable!(nodes[1]);
- expect_pending_htlcs_forwardable!(nodes[1]);
+ expect_pending_htlcs_forwardable_and_htlc_handling_failed!(nodes[1], vec![HTLCDestination::FailedPayment { payment_hash }]);
check_added_monitors!(nodes[1], 1);
let updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
assert!(updates.update_add_htlcs.is_empty());
let payer_pubkey = nodes[0].node.get_our_node_id();
let payee_pubkey = nodes[1].node.get_our_node_id();
- nodes[0].node.peer_connected(&payee_pubkey, &msgs::Init { features: InitFeatures::known(), remote_network_address: None });
- nodes[1].node.peer_connected(&payer_pubkey, &msgs::Init { features: InitFeatures::known(), remote_network_address: None });
+ nodes[0].node.peer_connected(&payee_pubkey, &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+ nodes[1].node.peer_connected(&payer_pubkey, &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
- let _chan = create_chan_between_nodes(&nodes[0], &nodes[1], InitFeatures::known(), InitFeatures::known());
+ let _chan = create_chan_between_nodes(&nodes[0], &nodes[1], channelmanager::provided_init_features(), channelmanager::provided_init_features());
let route_params = RouteParameters {
payment_params: PaymentParameters::for_keysend(payee_pubkey),
- final_value_msat: 10000,
+ final_value_msat: 10_000,
final_cltv_expiry_delta: 40,
};
- let network_graph = nodes[0].network_graph;
+ let network_graph = nodes[0].network_graph.clone();
let first_hops = nodes[0].node.list_usable_channels();
let scorer = test_utils::TestScorer::with_penalty(0);
let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
let route = find_route(
- &payer_pubkey, &route_params, network_graph, Some(&first_hops.iter().collect::<Vec<_>>()),
+ &payer_pubkey, &route_params, &network_graph, Some(&first_hops.iter().collect::<Vec<_>>()),
nodes[0].logger, &scorer, &random_seed_bytes
).unwrap();
let test_preimage = PaymentPreimage([42; 32]);
let mismatch_payment_hash = PaymentHash([43; 32]);
- let _ = nodes[0].node.send_payment_internal(&route, mismatch_payment_hash, &None, Some(test_preimage), None, None).unwrap();
+ let session_privs = nodes[0].node.test_add_new_pending_payment(mismatch_payment_hash, None, PaymentId(mismatch_payment_hash.0), &route).unwrap();
+ nodes[0].node.test_send_payment_internal(&route, mismatch_payment_hash, &None, Some(test_preimage), PaymentId(mismatch_payment_hash.0), None, session_privs).unwrap();
check_added_monitors!(nodes[0], 1);
let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
let payer_pubkey = nodes[0].node.get_our_node_id();
let payee_pubkey = nodes[1].node.get_our_node_id();
- nodes[0].node.peer_connected(&payee_pubkey, &msgs::Init { features: InitFeatures::known(), remote_network_address: None });
- nodes[1].node.peer_connected(&payer_pubkey, &msgs::Init { features: InitFeatures::known(), remote_network_address: None });
+ nodes[0].node.peer_connected(&payee_pubkey, &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+ nodes[1].node.peer_connected(&payer_pubkey, &msgs::Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
- let _chan = create_chan_between_nodes(&nodes[0], &nodes[1], InitFeatures::known(), InitFeatures::known());
+ let _chan = create_chan_between_nodes(&nodes[0], &nodes[1], channelmanager::provided_init_features(), channelmanager::provided_init_features());
let route_params = RouteParameters {
payment_params: PaymentParameters::for_keysend(payee_pubkey),
- final_value_msat: 10000,
+ final_value_msat: 10_000,
final_cltv_expiry_delta: 40,
};
- let network_graph = nodes[0].network_graph;
+ let network_graph = nodes[0].network_graph.clone();
let first_hops = nodes[0].node.list_usable_channels();
let scorer = test_utils::TestScorer::with_penalty(0);
let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes();
let route = find_route(
- &payer_pubkey, &route_params, network_graph, Some(&first_hops.iter().collect::<Vec<_>>()),
+ &payer_pubkey, &route_params, &network_graph, Some(&first_hops.iter().collect::<Vec<_>>()),
nodes[0].logger, &scorer, &random_seed_bytes
).unwrap();
let test_preimage = PaymentPreimage([42; 32]);
let test_secret = PaymentSecret([43; 32]);
let payment_hash = PaymentHash(Sha256::hash(&test_preimage.0).into_inner());
- let _ = nodes[0].node.send_payment_internal(&route, payment_hash, &Some(test_secret), Some(test_preimage), None, None).unwrap();
+ let session_privs = nodes[0].node.test_add_new_pending_payment(payment_hash, Some(test_secret), PaymentId(payment_hash.0), &route).unwrap();
+ nodes[0].node.test_send_payment_internal(&route, payment_hash, &Some(test_secret), Some(test_preimage), PaymentId(payment_hash.0), None, session_privs).unwrap();
check_added_monitors!(nodes[0], 1);
let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id());
let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
- let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
- let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
- let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
- let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
+ let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
+ let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
+ let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
+ let chan_4_id = create_announced_chan_between_nodes(&nodes, 2, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features()).0.contents.short_channel_id;
// Marshall an MPP route.
let (mut route, payment_hash, _, _) = get_route_and_payment_hash!(&nodes[0], nodes[3], 100000);
route.paths[1][0].short_channel_id = chan_2_id;
route.paths[1][1].short_channel_id = chan_4_id;
- match nodes[0].node.send_payment(&route, payment_hash, &None).unwrap_err() {
+ match nodes[0].node.send_payment(&route, payment_hash, &None, PaymentId(payment_hash.0)).unwrap_err() {
PaymentSendFailure::ParameterError(APIError::APIMisuseError { ref err }) => {
assert!(regex::Regex::new(r"Payment secret is required for multi-path payments").unwrap().is_match(err)) },
_ => panic!("unexpected error")
// Check that using the original payment hash succeeds.
assert!(inbound_payment::verify(payment_hash, &payment_data, nodes[0].node.highest_seen_timestamp.load(Ordering::Acquire) as u64, &nodes[0].node.inbound_payment_key, &nodes[0].logger).is_ok());
}
+
+ #[test]
+ fn test_id_to_peer_coverage() {
+ // Test that the `ChannelManager:id_to_peer` contains channels which have been assigned
+ // a `channel_id` (i.e. have had the funding tx created), and that they are removed once
+ // the channel is successfully closed.
+ let chanmon_cfgs = create_chanmon_cfgs(2);
+ let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+ let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+ nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 1_000_000, 500_000_000, 42, None).unwrap();
+ let open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), channelmanager::provided_init_features(), &open_channel);
+ let accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), channelmanager::provided_init_features(), &accept_channel);
+
+ let (temporary_channel_id, tx, _funding_output) = create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 1_000_000, 42);
+ let channel_id = &tx.txid().into_inner();
+ {
+ // Ensure that the `id_to_peer` map is empty until either party has received the
+ // funding transaction, and have the real `channel_id`.
+ assert_eq!(nodes[0].node.id_to_peer.lock().unwrap().len(), 0);
+ assert_eq!(nodes[1].node.id_to_peer.lock().unwrap().len(), 0);
+ }
+
+ nodes[0].node.funding_transaction_generated(&temporary_channel_id, &nodes[1].node.get_our_node_id(), tx.clone()).unwrap();
+ {
+ // Assert that `nodes[0]`'s `id_to_peer` map is populated with the channel as soon as
+ // as it has the funding transaction.
+ let nodes_0_lock = nodes[0].node.id_to_peer.lock().unwrap();
+ assert_eq!(nodes_0_lock.len(), 1);
+ assert!(nodes_0_lock.contains_key(channel_id));
+
+ assert_eq!(nodes[1].node.id_to_peer.lock().unwrap().len(), 0);
+ }
+
+ let funding_created_msg = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
+
+ nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created_msg);
+ {
+ let nodes_0_lock = nodes[0].node.id_to_peer.lock().unwrap();
+ assert_eq!(nodes_0_lock.len(), 1);
+ assert!(nodes_0_lock.contains_key(channel_id));
+
+ // Assert that `nodes[1]`'s `id_to_peer` map is populated with the channel as soon as
+ // as it has the funding transaction.
+ let nodes_1_lock = nodes[1].node.id_to_peer.lock().unwrap();
+ assert_eq!(nodes_1_lock.len(), 1);
+ assert!(nodes_1_lock.contains_key(channel_id));
+ }
+ check_added_monitors!(nodes[1], 1);
+ let funding_signed = get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &funding_signed);
+ check_added_monitors!(nodes[0], 1);
+ let (channel_ready, _) = create_chan_between_nodes_with_value_confirm(&nodes[0], &nodes[1], &tx);
+ let (announcement, nodes_0_update, nodes_1_update) = create_chan_between_nodes_with_value_b(&nodes[0], &nodes[1], &channel_ready);
+ update_nodes_with_chan_announce(&nodes, 0, 1, &announcement, &nodes_0_update, &nodes_1_update);
+
+ nodes[0].node.close_channel(channel_id, &nodes[1].node.get_our_node_id()).unwrap();
+ nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &channelmanager::provided_init_features(), &get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()));
+ let nodes_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &channelmanager::provided_init_features(), &nodes_1_shutdown);
+
+ let closing_signed_node_0 = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id());
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &closing_signed_node_0);
+ {
+ // Assert that the channel is kept in the `id_to_peer` map for both nodes until the
+ // channel can be fully closed by both parties (i.e. no outstanding htlcs exists, the
+ // fee for the closing transaction has been negotiated and the parties has the other
+ // party's signature for the fee negotiated closing transaction.)
+ let nodes_0_lock = nodes[0].node.id_to_peer.lock().unwrap();
+ assert_eq!(nodes_0_lock.len(), 1);
+ assert!(nodes_0_lock.contains_key(channel_id));
+
+ // At this stage, `nodes[1]` has proposed a fee for the closing transaction in the
+ // `handle_closing_signed` call above. As `nodes[1]` has not yet received the signature
+ // from `nodes[0]` for the closing transaction with the proposed fee, the channel is
+ // kept in the `nodes[1]`'s `id_to_peer` map.
+ let nodes_1_lock = nodes[1].node.id_to_peer.lock().unwrap();
+ assert_eq!(nodes_1_lock.len(), 1);
+ assert!(nodes_1_lock.contains_key(channel_id));
+ }
+
+ nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id()));
+ {
+ // `nodes[0]` accepts `nodes[1]`'s proposed fee for the closing transaction, and
+ // therefore has all it needs to fully close the channel (both signatures for the
+ // closing transaction).
+ // Assert that the channel is removed from `nodes[0]`'s `id_to_peer` map as it can be
+ // fully closed by `nodes[0]`.
+ assert_eq!(nodes[0].node.id_to_peer.lock().unwrap().len(), 0);
+
+ // Assert that the channel is still in `nodes[1]`'s `id_to_peer` map, as `nodes[1]`
+ // doesn't have `nodes[0]`'s signature for the closing transaction yet.
+ let nodes_1_lock = nodes[1].node.id_to_peer.lock().unwrap();
+ assert_eq!(nodes_1_lock.len(), 1);
+ assert!(nodes_1_lock.contains_key(channel_id));
+ }
+
+ let (_nodes_0_update, closing_signed_node_0) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id());
+
+ nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &closing_signed_node_0.unwrap());
+ {
+ // Assert that the channel has now been removed from both parties `id_to_peer` map once
+ // they both have everything required to fully close the channel.
+ assert_eq!(nodes[1].node.id_to_peer.lock().unwrap().len(), 0);
+ }
+ let (_nodes_1_update, _none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id());
+
+ check_closed_event!(nodes[0], 1, ClosureReason::CooperativeClosure);
+ check_closed_event!(nodes[1], 1, ClosureReason::CooperativeClosure);
+ }
}
#[cfg(all(any(test, feature = "_test_utils"), feature = "_bench_unstable"))]
pub mod bench {
- use chain::Listen;
- use chain::chainmonitor::{ChainMonitor, Persist};
- use chain::keysinterface::{KeysManager, KeysInterface, InMemorySigner};
- use ln::channelmanager::{BestBlock, ChainParameters, ChannelManager, PaymentHash, PaymentPreimage};
- use ln::features::{InitFeatures, InvoiceFeatures};
- use ln::functional_test_utils::*;
- use ln::msgs::{ChannelMessageHandler, Init};
- use routing::gossip::NetworkGraph;
- use routing::router::{PaymentParameters, get_route};
- use util::test_utils;
- use util::config::UserConfig;
- use util::events::{Event, MessageSendEvent, MessageSendEventsProvider};
+ use crate::chain::Listen;
+ use crate::chain::chainmonitor::{ChainMonitor, Persist};
+ use crate::chain::keysinterface::{EntropySource, KeysManager, KeysInterface, InMemorySigner};
+ use crate::ln::channelmanager::{self, BestBlock, ChainParameters, ChannelManager, PaymentHash, PaymentPreimage, PaymentId};
+ use crate::ln::functional_test_utils::*;
+ use crate::ln::msgs::{ChannelMessageHandler, Init};
+ use crate::routing::gossip::NetworkGraph;
+ use crate::routing::router::{PaymentParameters, get_route};
+ use crate::util::test_utils;
+ use crate::util::config::UserConfig;
+ use crate::util::events::{Event, MessageSendEvent, MessageSendEventsProvider};
use bitcoin::hashes::Hash;
use bitcoin::hashes::sha256::Hash as Sha256;
- use bitcoin::{Block, BlockHeader, Transaction, TxOut};
+ use bitcoin::{Block, BlockHeader, PackedLockTime, Transaction, TxMerkleNode, TxOut};
- use sync::{Arc, Mutex};
+ use crate::sync::{Arc, Mutex};
use test::Bencher;
struct NodeHolder<'a, P: Persist<InMemorySigner>> {
- node: &'a ChannelManager<InMemorySigner,
+ node: &'a ChannelManager<
&'a ChainMonitor<InMemorySigner, &'a test_utils::TestChainSource,
&'a test_utils::TestBroadcaster, &'a test_utils::TestFeeEstimator,
&'a test_utils::TestLogger, &'a P>,
&'a test_utils::TestBroadcaster, &'a KeysManager,
- &'a test_utils::TestFeeEstimator, &'a test_utils::TestLogger>
+ &'a test_utils::TestFeeEstimator, &'a test_utils::TestRouter<'a>,
+ &'a test_utils::TestLogger>,
}
#[cfg(test)]
let tx_broadcaster = test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new()), blocks: Arc::new(Mutex::new(Vec::new()))};
let fee_estimator = test_utils::TestFeeEstimator { sat_per_kw: Mutex::new(253) };
+ let logger_a = test_utils::TestLogger::with_id("node a".to_owned());
+ let router = test_utils::TestRouter::new(Arc::new(NetworkGraph::new(genesis_hash, &logger_a)));
let mut config: UserConfig = Default::default();
- config.own_channel_config.minimum_depth = 1;
+ config.channel_handshake_config.minimum_depth = 1;
- let logger_a = test_utils::TestLogger::with_id("node a".to_owned());
let chain_monitor_a = ChainMonitor::new(None, &tx_broadcaster, &logger_a, &fee_estimator, &persister_a);
let seed_a = [1u8; 32];
let keys_manager_a = KeysManager::new(&seed_a, 42, 42);
- let node_a = ChannelManager::new(&fee_estimator, &chain_monitor_a, &tx_broadcaster, &logger_a, &keys_manager_a, config.clone(), ChainParameters {
+ let node_a = ChannelManager::new(&fee_estimator, &chain_monitor_a, &tx_broadcaster, &router, &logger_a, &keys_manager_a, config.clone(), ChainParameters {
network,
best_block: BestBlock::from_genesis(network),
});
let chain_monitor_b = ChainMonitor::new(None, &tx_broadcaster, &logger_a, &fee_estimator, &persister_b);
let seed_b = [2u8; 32];
let keys_manager_b = KeysManager::new(&seed_b, 42, 42);
- let node_b = ChannelManager::new(&fee_estimator, &chain_monitor_b, &tx_broadcaster, &logger_b, &keys_manager_b, config.clone(), ChainParameters {
+ let node_b = ChannelManager::new(&fee_estimator, &chain_monitor_b, &tx_broadcaster, &router, &logger_b, &keys_manager_b, config.clone(), ChainParameters {
network,
best_block: BestBlock::from_genesis(network),
});
let node_b_holder = NodeHolder { node: &node_b };
- node_a.peer_connected(&node_b.get_our_node_id(), &Init { features: InitFeatures::known(), remote_network_address: None });
- node_b.peer_connected(&node_a.get_our_node_id(), &Init { features: InitFeatures::known(), remote_network_address: None });
+ node_a.peer_connected(&node_b.get_our_node_id(), &Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
+ node_b.peer_connected(&node_a.get_our_node_id(), &Init { features: channelmanager::provided_init_features(), remote_network_address: None }).unwrap();
node_a.create_channel(node_b.get_our_node_id(), 8_000_000, 100_000_000, 42, None).unwrap();
- node_b.handle_open_channel(&node_a.get_our_node_id(), InitFeatures::known(), &get_event_msg!(node_a_holder, MessageSendEvent::SendOpenChannel, node_b.get_our_node_id()));
- node_a.handle_accept_channel(&node_b.get_our_node_id(), InitFeatures::known(), &get_event_msg!(node_b_holder, MessageSendEvent::SendAcceptChannel, node_a.get_our_node_id()));
+ node_b.handle_open_channel(&node_a.get_our_node_id(), channelmanager::provided_init_features(), &get_event_msg!(node_a_holder, MessageSendEvent::SendOpenChannel, node_b.get_our_node_id()));
+ node_a.handle_accept_channel(&node_b.get_our_node_id(), channelmanager::provided_init_features(), &get_event_msg!(node_b_holder, MessageSendEvent::SendAcceptChannel, node_a.get_our_node_id()));
let tx;
if let Event::FundingGenerationReady { temporary_channel_id, output_script, .. } = get_event!(node_a_holder, Event::FundingGenerationReady) {
- tx = Transaction { version: 2, lock_time: 0, input: Vec::new(), output: vec![TxOut {
+ tx = Transaction { version: 2, lock_time: PackedLockTime::ZERO, input: Vec::new(), output: vec![TxOut {
value: 8_000_000, script_pubkey: output_script,
}]};
node_a.funding_transaction_generated(&temporary_channel_id, &node_b.get_our_node_id(), tx.clone()).unwrap();
assert_eq!(&tx_broadcaster.txn_broadcasted.lock().unwrap()[..], &[tx.clone()]);
let block = Block {
- header: BlockHeader { version: 0x20000000, prev_blockhash: genesis_hash, merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 },
+ header: BlockHeader { version: 0x20000000, prev_blockhash: genesis_hash, merkle_root: TxMerkleNode::all_zeros(), time: 42, bits: 42, nonce: 42 },
txdata: vec![tx],
};
Listen::block_connected(&node_a, &block, 1);
_ => panic!(),
}
- let dummy_graph = NetworkGraph::new(genesis_hash);
+ let events_a = node_a.get_and_clear_pending_events();
+ assert_eq!(events_a.len(), 1);
+ match events_a[0] {
+ Event::ChannelReady{ ref counterparty_node_id, .. } => {
+ assert_eq!(*counterparty_node_id, node_b.get_our_node_id());
+ },
+ _ => panic!("Unexpected event"),
+ }
+
+ let events_b = node_b.get_and_clear_pending_events();
+ assert_eq!(events_b.len(), 1);
+ match events_b[0] {
+ Event::ChannelReady{ ref counterparty_node_id, .. } => {
+ assert_eq!(*counterparty_node_id, node_a.get_our_node_id());
+ },
+ _ => panic!("Unexpected event"),
+ }
+
+ let dummy_graph = NetworkGraph::new(genesis_hash, &logger_a);
let mut payment_count: u64 = 0;
macro_rules! send_payment {
($node_a: expr, $node_b: expr) => {
let usable_channels = $node_a.list_usable_channels();
let payment_params = PaymentParameters::from_node_id($node_b.get_our_node_id())
- .with_features(InvoiceFeatures::known());
+ .with_features(channelmanager::provided_invoice_features());
let scorer = test_utils::TestScorer::with_penalty(0);
let seed = [3u8; 32];
let keys_manager = KeysManager::new(&seed, 42, 42);
let payment_hash = PaymentHash(Sha256::hash(&payment_preimage.0[..]).into_inner());
let payment_secret = $node_b.create_inbound_payment_for_hash(payment_hash, None, 7200).unwrap();
- $node_a.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
+ $node_a.send_payment(&route, payment_hash, &Some(payment_secret), PaymentId(payment_hash.0)).unwrap();
let payment_event = SendEvent::from_event($node_a.get_and_clear_pending_msg_events().pop().unwrap());
$node_b.handle_update_add_htlc(&$node_a.get_our_node_id(), &payment_event.msgs[0]);
$node_b.handle_commitment_signed(&$node_a.get_our_node_id(), &payment_event.commitment_msg);
$node_b.handle_revoke_and_ack(&$node_a.get_our_node_id(), &get_event_msg!(NodeHolder { node: &$node_a }, MessageSendEvent::SendRevokeAndACK, $node_b.get_our_node_id()));
expect_pending_htlcs_forwardable!(NodeHolder { node: &$node_b });
- expect_payment_received!(NodeHolder { node: &$node_b }, payment_hash, payment_secret, 10_000);
+ expect_payment_claimable!(NodeHolder { node: &$node_b }, payment_hash, payment_secret, 10_000);
$node_b.claim_funds(payment_preimage);
expect_payment_claimed!(NodeHolder { node: &$node_b }, payment_hash, 10_000);