use crate::chain::chaininterface::{FeeEstimator, ConfirmationTarget, LowerBoundedFeeEstimator};
use crate::chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateStep, LATENCY_GRACE_PERIOD_BLOCKS};
use crate::chain::transaction::{OutPoint, TransactionData};
-use crate::chain::keysinterface::{Sign, EntropySource, BaseSign, NodeSigner, Recipient, SignerProvider};
+use crate::chain::keysinterface::{WriteableEcdsaChannelSigner, EntropySource, ChannelSigner, SignerProvider, NodeSigner, Recipient};
+use crate::routing::gossip::NodeId;
use crate::util::events::ClosureReason;
use crate::util::ser::{Readable, ReadableArgs, Writeable, Writer, VecWriter};
use crate::util::logger::Logger;
//
// Holder designates channel data owned for the benefice of the user client.
// Counterparty designates channel data owned by the another channel participant entity.
-pub(super) struct Channel<Signer: Sign> {
+pub(super) struct Channel<Signer: ChannelSigner> {
config: LegacyChannelConfig,
// Track the previous `ChannelConfig` so that we can continue forwarding HTLCs that were
monitor_pending_channel_ready: bool,
monitor_pending_revoke_and_ack: bool,
monitor_pending_commitment_signed: bool,
+
+ // TODO: If a channel is drop'd, we don't know whether the `ChannelMonitor` is ultimately
+ // responsible for some of the HTLCs here or not - we don't know whether the update in question
+ // completed or not. We currently ignore these fields entirely when force-closing a channel,
+ // but need to handle this somehow or we run the risk of losing HTLCs!
monitor_pending_forwards: Vec<(PendingHTLCInfo, u64)>,
monitor_pending_failures: Vec<(HTLCSource, PaymentHash, HTLCFailReason)>,
monitor_pending_finalized_fulfills: Vec<HTLCSource>,
/// The unique identifier used to re-derive the private key material for the channel through
/// [`SignerProvider::derive_channel_signer`].
channel_keys_id: [u8; 32],
+
+ /// When we generate [`ChannelMonitorUpdate`]s to persist, they may not be persisted immediately.
+ /// If we then persist the [`channelmanager::ChannelManager`] and crash before the persistence
+ /// completes we still need to be able to complete the persistence. Thus, we have to keep a
+ /// copy of the [`ChannelMonitorUpdate`] here until it is complete.
+ pending_monitor_updates: Vec<ChannelMonitorUpdate>,
}
#[cfg(any(test, fuzzing))]
};
}
-impl<Signer: Sign> Channel<Signer> {
+impl<Signer: WriteableEcdsaChannelSigner> Channel<Signer> {
/// Returns the value to use for `holder_max_htlc_value_in_flight_msat` as a percentage of the
/// `channel_value_satoshis` in msat, set through
/// [`ChannelHandshakeConfig::max_inbound_htlc_value_in_flight_percent_of_channel`]
channel_type,
channel_keys_id,
+
+ pending_monitor_updates: Vec::new(),
})
}
channel_type,
channel_keys_id,
+
+ pending_monitor_updates: Vec::new(),
};
Ok(chan)
(self.channel_state & ChannelState::MonitorUpdateInProgress as u32) != 0
}
+ pub fn get_next_monitor_update(&self) -> Option<&ChannelMonitorUpdate> {
+ self.pending_monitor_updates.first()
+ }
+
/// Returns true if funding_created was sent/received.
pub fn is_funding_initiated(&self) -> bool {
self.channel_state >= ChannelState::FundingSent as u32
return Err(ChannelError::Ignore("Cannot get a ChannelAnnouncement if the channel is not currently usable".to_owned()));
}
- let node_id = node_signer.get_node_id(Recipient::Node)
- .map_err(|_| ChannelError::Ignore("Failed to retrieve own public key".to_owned()))?;
- let were_node_one = node_id.serialize()[..] < self.counterparty_node_id.serialize()[..];
+ let node_id = NodeId::from_pubkey(&node_signer.get_node_id(Recipient::Node)
+ .map_err(|_| ChannelError::Ignore("Failed to retrieve own public key".to_owned()))?);
+ let counterparty_node_id = NodeId::from_pubkey(&self.get_counterparty_node_id());
+ let were_node_one = node_id.as_slice() < counterparty_node_id.as_slice();
let msg = msgs::UnsignedChannelAnnouncement {
features: channelmanager::provided_channel_features(&user_config),
chain_hash,
short_channel_id: self.get_short_channel_id().unwrap(),
- node_id_1: if were_node_one { node_id } else { self.get_counterparty_node_id() },
- node_id_2: if were_node_one { self.get_counterparty_node_id() } else { node_id },
- bitcoin_key_1: if were_node_one { self.get_holder_pubkeys().funding_pubkey } else { self.counterparty_funding_pubkey().clone() },
- bitcoin_key_2: if were_node_one { self.counterparty_funding_pubkey().clone() } else { self.get_holder_pubkeys().funding_pubkey },
+ node_id_1: if were_node_one { node_id } else { counterparty_node_id },
+ node_id_2: if were_node_one { counterparty_node_id } else { node_id },
+ bitcoin_key_1: NodeId::from_pubkey(if were_node_one { &self.get_holder_pubkeys().funding_pubkey } else { self.counterparty_funding_pubkey() }),
+ bitcoin_key_2: NodeId::from_pubkey(if were_node_one { self.counterparty_funding_pubkey() } else { &self.get_holder_pubkeys().funding_pubkey }),
excess_data: Vec::new(),
};
&self, node_signer: &NS, announcement: msgs::UnsignedChannelAnnouncement
) -> Result<msgs::ChannelAnnouncement, ChannelError> where NS::Target: NodeSigner {
if let Some((their_node_sig, their_bitcoin_sig)) = self.announcement_sigs {
- let our_node_key = node_signer.get_node_id(Recipient::Node)
- .map_err(|_| ChannelError::Ignore("Signer failed to retrieve own public key".to_owned()))?;
+ let our_node_key = NodeId::from_pubkey(&node_signer.get_node_id(Recipient::Node)
+ .map_err(|_| ChannelError::Ignore("Signer failed to retrieve own public key".to_owned()))?);
let were_node_one = announcement.node_id_1 == our_node_key;
let our_node_sig = node_signer.sign_gossip_message(msgs::UnsignedGossipMessage::ChannelAnnouncement(&announcement))
Ok(Some(res))
}
- /// Only fails in case of bad keys
+ /// Only fails in case of signer rejection.
fn send_commitment_no_status_check<L: Deref>(&mut self, logger: &L) -> Result<(msgs::CommitmentSigned, ChannelMonitorUpdate), ChannelError> where L::Target: Logger {
+ let monitor_update = self.build_commitment_no_status_check(logger);
+ match self.send_commitment_no_state_update(logger) {
+ Ok((commitment_signed, _)) => Ok((commitment_signed, monitor_update)),
+ Err(e) => Err(e),
+ }
+ }
+
+ fn build_commitment_no_status_check<L: Deref>(&mut self, logger: &L) -> ChannelMonitorUpdate where L::Target: Logger {
log_trace!(logger, "Updating HTLC state for a newly-sent commitment_signed...");
// We can upgrade the status of some HTLCs that are waiting on a commitment, even if we
// fail to generate this, we still are at least at a position where upgrading their status
}
self.resend_order = RAACommitmentOrder::RevokeAndACKFirst;
- let (res, counterparty_commitment_txid, htlcs) = match self.send_commitment_no_state_update(logger) {
- Ok((res, (counterparty_commitment_tx, mut htlcs))) => {
- // Update state now that we've passed all the can-fail calls...
- let htlcs_no_ref: Vec<(HTLCOutputInCommitment, Option<Box<HTLCSource>>)> =
- htlcs.drain(..).map(|(htlc, htlc_source)| (htlc, htlc_source.map(|source_ref| Box::new(source_ref.clone())))).collect();
- (res, counterparty_commitment_tx, htlcs_no_ref)
- },
- Err(e) => return Err(e),
- };
+ let (counterparty_commitment_txid, mut htlcs_ref) = self.build_commitment_no_state_update(logger);
+ let htlcs: Vec<(HTLCOutputInCommitment, Option<Box<HTLCSource>>)> =
+ htlcs_ref.drain(..).map(|(htlc, htlc_source)| (htlc, htlc_source.map(|source_ref| Box::new(source_ref.clone())))).collect();
if self.announcement_sigs_state == AnnouncementSigsState::MessageSent {
self.announcement_sigs_state = AnnouncementSigsState::Committed;
}]
};
self.channel_state |= ChannelState::AwaitingRemoteRevoke as u32;
- Ok((res, monitor_update))
+ monitor_update
}
- /// Only fails in case of bad keys. Used for channel_reestablish commitment_signed generation
- /// when we shouldn't change HTLC/channel state.
- fn send_commitment_no_state_update<L: Deref>(&self, logger: &L) -> Result<(msgs::CommitmentSigned, (Txid, Vec<(HTLCOutputInCommitment, Option<&HTLCSource>)>)), ChannelError> where L::Target: Logger {
+ fn build_commitment_no_state_update<L: Deref>(&self, logger: &L) -> (Txid, Vec<(HTLCOutputInCommitment, Option<&HTLCSource>)>) where L::Target: Logger {
let counterparty_keys = self.build_remote_transaction_keys();
let commitment_stats = self.build_commitment_transaction(self.cur_counterparty_commitment_transaction_number, &counterparty_keys, false, true, logger);
let counterparty_commitment_txid = commitment_stats.tx.trust().txid();
- let (signature, htlc_signatures);
#[cfg(any(test, fuzzing))]
{
}
}
+ (counterparty_commitment_txid, commitment_stats.htlcs_included)
+ }
+
+ /// Only fails in case of signer rejection. Used for channel_reestablish commitment_signed
+ /// generation when we shouldn't change HTLC/channel state.
+ fn send_commitment_no_state_update<L: Deref>(&self, logger: &L) -> Result<(msgs::CommitmentSigned, (Txid, Vec<(HTLCOutputInCommitment, Option<&HTLCSource>)>)), ChannelError> where L::Target: Logger {
+ // Get the fee tests from `build_commitment_no_state_update`
+ #[cfg(any(test, fuzzing))]
+ self.build_commitment_no_state_update(logger);
+
+ let counterparty_keys = self.build_remote_transaction_keys();
+ let commitment_stats = self.build_commitment_transaction(self.cur_counterparty_commitment_transaction_number, &counterparty_keys, false, true, logger);
+ let counterparty_commitment_txid = commitment_stats.tx.trust().txid();
+ let (signature, htlc_signatures);
+
{
let mut htlcs = Vec::with_capacity(commitment_stats.htlcs_included.len());
for &(ref htlc, _) in commitment_stats.htlcs_included.iter() {
}
}
-impl<Signer: Sign> Writeable for Channel<Signer> {
+impl<Signer: WriteableEcdsaChannelSigner> Writeable for Channel<Signer> {
fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
// Note that we write out as if remove_uncommitted_htlcs_and_mark_paused had just been
// called.
channel_type: channel_type.unwrap(),
channel_keys_id,
+
+ pending_monitor_updates: Vec::new(),
})
}
}
use crate::ln::chan_utils::{htlc_success_tx_weight, htlc_timeout_tx_weight};
use crate::chain::BestBlock;
use crate::chain::chaininterface::{FeeEstimator, LowerBoundedFeeEstimator, ConfirmationTarget};
- use crate::chain::keysinterface::{BaseSign, InMemorySigner, EntropySource, SignerProvider};
+ use crate::chain::keysinterface::{ChannelSigner, InMemorySigner, EntropySource, SignerProvider};
use crate::chain::transaction::OutPoint;
use crate::util::config::UserConfig;
use crate::util::enforcing_trait_impls::EnforcingSigner;
use bitcoin::hashes::hex::FromHex;
use bitcoin::hash_types::Txid;
use bitcoin::secp256k1::Message;
- use crate::chain::keysinterface::BaseSign;
+ use crate::chain::keysinterface::EcdsaChannelSigner;
use crate::ln::PaymentPreimage;
use crate::ln::channel::{HTLCOutputInCommitment ,TxCreationKeys};
use crate::ln::chan_utils::{ChannelPublicKeys, HolderCommitmentTransaction, CounterpartyChannelTransactionParameters};
projects / rust-lightning / blobdiff