// 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> {
- #[cfg(any(test, feature = "_test_utils"))]
- pub(crate) config: LegacyChannelConfig,
- #[cfg(not(any(test, feature = "_test_utils")))]
config: LegacyChannelConfig,
// Track the previous `ChannelConfig` so that we can continue forwarding HTLCs that were
Ignore(String),
Warn(String),
Close(String),
- CloseDelayBroadcast(String),
}
impl fmt::Debug for ChannelError {
&ChannelError::Ignore(ref e) => write!(f, "Ignore : {}", e),
&ChannelError::Warn(ref e) => write!(f, "Warn : {}", e),
&ChannelError::Close(ref e) => write!(f, "Close : {}", e),
- &ChannelError::CloseDelayBroadcast(ref e) => write!(f, "CloseDelayBroadcast : {}", e)
}
}
}
/// May panic if some calls other than message-handling calls (which will all Err immediately)
/// have been called between remove_uncommitted_htlcs_and_mark_paused and this call.
+ ///
+ /// Some links printed in log lines are included here to check them during build (when run with
+ /// `cargo doc --document-private-items`):
+ /// [`super::channelmanager::ChannelManager::force_close_without_broadcasting_txn`] and
+ /// [`super::channelmanager::ChannelManager::force_close_all_channels_without_broadcasting_txn`].
pub fn channel_reestablish<L: Deref>(&mut self, msg: &msgs::ChannelReestablish, logger: &L,
node_pk: PublicKey, genesis_block_hash: BlockHash, best_block: &BestBlock)
-> Result<ReestablishResponses, ChannelError> where L::Target: Logger {
return Err(ChannelError::Close("Peer sent a garbage channel_reestablish with secret key not matching the commitment height provided".to_owned()));
}
if msg.next_remote_commitment_number > INITIAL_COMMITMENT_NUMBER - self.cur_holder_commitment_transaction_number {
- return Err(ChannelError::CloseDelayBroadcast(
- "We have fallen behind - we have received proof that if we broadcast remote is going to claim our funds - we can't do any automated broadcasting".to_owned()
- ));
+ macro_rules! log_and_panic {
+ ($err_msg: expr) => {
+ log_error!(logger, $err_msg, log_bytes!(self.channel_id), log_pubkey!(self.counterparty_node_id));
+ panic!($err_msg, log_bytes!(self.channel_id), log_pubkey!(self.counterparty_node_id));
+ }
+ }
+ log_and_panic!("We have fallen behind - we have received proof that if we broadcast our counterparty is going to claim all our funds.\n\
+ This implies you have restarted with lost ChannelMonitor and ChannelManager state, the first of which is a violation of the LDK chain::Watch requirements.\n\
+ More specifically, this means you have a bug in your implementation that can cause loss of funds, or you are running with an old backup, which is unsafe.\n\
+ If you have restored from an old backup and wish to force-close channels and return to operation, you should start up, call\n\
+ ChannelManager::force_close_without_broadcasting_txn on channel {} with counterparty {} or\n\
+ ChannelManager::force_close_all_channels_without_broadcasting_txn, then reconnect to peer(s).\n\
+ Note that due to a long-standing bug in lnd you may have to reach out to peers running lnd-based nodes to ask them to manually force-close channels\n\
+ See https://github.com/lightningdevkit/rust-lightning/issues/1565 for more info.");
}
},
OptionalField::Absent => {}
// now!
match self.free_holding_cell_htlcs(logger) {
Err(ChannelError::Close(msg)) => Err(ChannelError::Close(msg)),
- Err(ChannelError::Warn(_)) | Err(ChannelError::Ignore(_)) | Err(ChannelError::CloseDelayBroadcast(_)) =>
+ Err(ChannelError::Warn(_)) | Err(ChannelError::Ignore(_)) =>
panic!("Got non-channel-failing result from free_holding_cell_htlcs"),
Ok((Some((commitment_update, monitor_update)), holding_cell_failed_htlcs)) => {
Ok(ReestablishResponses {
did_channel_update
}
+ fn internal_htlc_satisfies_config(
+ &self, htlc: &msgs::UpdateAddHTLC, amt_to_forward: u64, outgoing_cltv_value: u32, config: &ChannelConfig,
+ ) -> Result<(), (&'static str, u16)> {
+ let fee = amt_to_forward.checked_mul(config.forwarding_fee_proportional_millionths as u64)
+ .and_then(|prop_fee| (prop_fee / 1000000).checked_add(config.forwarding_fee_base_msat as u64));
+ if fee.is_none() || htlc.amount_msat < fee.unwrap() ||
+ (htlc.amount_msat - fee.unwrap()) < amt_to_forward {
+ return Err((
+ "Prior hop has deviated from specified fees parameters or origin node has obsolete ones",
+ 0x1000 | 12, // fee_insufficient
+ ));
+ }
+ if (htlc.cltv_expiry as u64) < outgoing_cltv_value as u64 + config.cltv_expiry_delta as u64 {
+ return Err((
+ "Forwarding node has tampered with the intended HTLC values or origin node has an obsolete cltv_expiry_delta",
+ 0x1000 | 13, // incorrect_cltv_expiry
+ ));
+ }
+ Ok(())
+ }
+
+ /// Determines whether the parameters of an incoming HTLC to be forwarded satisfy the channel's
+ /// [`ChannelConfig`]. This first looks at the channel's current [`ChannelConfig`], and if
+ /// unsuccessful, falls back to the previous one if one exists.
+ pub fn htlc_satisfies_config(
+ &self, htlc: &msgs::UpdateAddHTLC, amt_to_forward: u64, outgoing_cltv_value: u32,
+ ) -> Result<(), (&'static str, u16)> {
+ self.internal_htlc_satisfies_config(&htlc, amt_to_forward, outgoing_cltv_value, &self.config())
+ .or_else(|err| {
+ if let Some(prev_config) = self.prev_config() {
+ self.internal_htlc_satisfies_config(htlc, amt_to_forward, outgoing_cltv_value, &prev_config)
+ } else {
+ Err(err)
+ }
+ })
+ }
+
pub fn get_feerate(&self) -> u32 {
self.feerate_per_kw
}
use bitcoin::secp256k1::{Secp256k1, ecdsa::Signature};
use bitcoin::secp256k1::ffi::Signature as FFISignature;
use bitcoin::secp256k1::{SecretKey,PublicKey};
+ use bitcoin::secp256k1::ecdh::SharedSecret;
use bitcoin::secp256k1::ecdsa::RecoverableSignature;
use bitcoin::hashes::sha256::Hash as Sha256;
use bitcoin::hashes::Hash;
type Signer = InMemorySigner;
fn get_node_secret(&self, _recipient: Recipient) -> Result<SecretKey, ()> { panic!(); }
+ fn ecdh(&self, _recipient: Recipient, _other_key: &PublicKey, _tweak: Option<&[u8; 32]>) -> Result<SharedSecret, ()> { panic!(); }
fn get_inbound_payment_key_material(&self) -> KeyMaterial { panic!(); }
fn get_destination_script(&self) -> Script {
let secp_ctx = Secp256k1::signing_only();
projects / rust-lightning / blobdiff