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, SignerProvider};
+use crate::chain::keysinterface::{WriteableEcdsaChannelSigner, EntropySource, ChannelSigner, SignerProvider, NodeSigner, Recipient};
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
};
}
-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`]
/// Handles a channel_ready message from our peer. If we've already sent our channel_ready
/// and the channel is now usable (and public), this may generate an announcement_signatures to
/// reply with.
- pub fn channel_ready<L: Deref>(&mut self, msg: &msgs::ChannelReady, node_pk: PublicKey, genesis_block_hash: BlockHash, user_config: &UserConfig, best_block: &BestBlock, logger: &L) -> Result<Option<msgs::AnnouncementSignatures>, ChannelError> where L::Target: Logger {
+ pub fn channel_ready<NS: Deref, L: Deref>(
+ &mut self, msg: &msgs::ChannelReady, node_signer: &NS, genesis_block_hash: BlockHash,
+ user_config: &UserConfig, best_block: &BestBlock, logger: &L
+ ) -> Result<Option<msgs::AnnouncementSignatures>, ChannelError>
+ where
+ NS::Target: NodeSigner,
+ L::Target: Logger
+ {
if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 {
self.workaround_lnd_bug_4006 = Some(msg.clone());
return Err(ChannelError::Ignore("Peer sent channel_ready when we needed a channel_reestablish. The peer is likely lnd, see https://github.com/lightningnetwork/lnd/issues/4006".to_owned()));
log_info!(logger, "Received channel_ready from peer for channel {}", log_bytes!(self.channel_id()));
- Ok(self.get_announcement_sigs(node_pk, genesis_block_hash, user_config, best_block.height(), logger))
+ Ok(self.get_announcement_sigs(node_signer, genesis_block_hash, user_config, best_block.height(), logger))
}
/// Returns transaction if there is pending funding transaction that is yet to broadcast
/// Indicates that the latest ChannelMonitor update has been committed by the client
/// successfully and we should restore normal operation. Returns messages which should be sent
/// to the remote side.
- pub fn monitor_updating_restored<L: Deref>(&mut self, logger: &L, node_pk: PublicKey, genesis_block_hash: BlockHash, user_config: &UserConfig, best_block_height: u32) -> MonitorRestoreUpdates where L::Target: Logger {
+ pub fn monitor_updating_restored<L: Deref, NS: Deref>(
+ &mut self, logger: &L, node_signer: &NS, genesis_block_hash: BlockHash,
+ user_config: &UserConfig, best_block_height: u32
+ ) -> MonitorRestoreUpdates
+ where
+ L::Target: Logger,
+ NS::Target: NodeSigner
+ {
assert_eq!(self.channel_state & ChannelState::MonitorUpdateInProgress as u32, ChannelState::MonitorUpdateInProgress as u32);
self.channel_state &= !(ChannelState::MonitorUpdateInProgress as u32);
})
} else { None };
- let announcement_sigs = self.get_announcement_sigs(node_pk, genesis_block_hash, user_config, best_block_height, logger);
+ let announcement_sigs = self.get_announcement_sigs(node_signer, genesis_block_hash, user_config, best_block_height, logger);
let mut accepted_htlcs = Vec::new();
mem::swap(&mut accepted_htlcs, &mut self.monitor_pending_forwards);
/// `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, user_config: &UserConfig, best_block: &BestBlock)
- -> Result<ReestablishResponses, ChannelError> where L::Target: Logger {
+ pub fn channel_reestablish<L: Deref, NS: Deref>(
+ &mut self, msg: &msgs::ChannelReestablish, logger: &L, node_signer: &NS,
+ genesis_block_hash: BlockHash, user_config: &UserConfig, best_block: &BestBlock
+ ) -> Result<ReestablishResponses, ChannelError>
+ where
+ L::Target: Logger,
+ NS::Target: NodeSigner
+ {
if self.channel_state & (ChannelState::PeerDisconnected as u32) == 0 {
// While BOLT 2 doesn't indicate explicitly we should error this channel here, it
// almost certainly indicates we are going to end up out-of-sync in some way, so we
})
} else { None };
- let announcement_sigs = self.get_announcement_sigs(node_pk, genesis_block_hash, user_config, best_block.height(), logger);
+ let announcement_sigs = self.get_announcement_sigs(node_signer, genesis_block_hash, user_config, best_block.height(), logger);
if self.channel_state & (ChannelState::FundingSent as u32) == ChannelState::FundingSent as u32 {
// If we're waiting on a monitor update, we shouldn't re-send any channel_ready's.
/// When a transaction is confirmed, we check whether it is or spends the funding transaction
/// In the first case, we store the confirmation height and calculating the short channel id.
/// In the second, we simply return an Err indicating we need to be force-closed now.
- pub fn transactions_confirmed<L: Deref>(&mut self, block_hash: &BlockHash, height: u32,
- txdata: &TransactionData, genesis_block_hash: BlockHash, node_pk: PublicKey, user_config: &UserConfig, logger: &L)
- -> Result<(Option<msgs::ChannelReady>, Option<msgs::AnnouncementSignatures>), ClosureReason> where L::Target: Logger {
+ pub fn transactions_confirmed<NS: Deref, L: Deref>(
+ &mut self, block_hash: &BlockHash, height: u32, txdata: &TransactionData,
+ genesis_block_hash: BlockHash, node_signer: &NS, user_config: &UserConfig, logger: &L
+ ) -> Result<(Option<msgs::ChannelReady>, Option<msgs::AnnouncementSignatures>), ClosureReason>
+ where
+ NS::Target: NodeSigner,
+ L::Target: Logger
+ {
if let Some(funding_txo) = self.get_funding_txo() {
for &(index_in_block, tx) in txdata.iter() {
// Check if the transaction is the expected funding transaction, and if it is,
// may have already happened for this block).
if let Some(channel_ready) = self.check_get_channel_ready(height) {
log_info!(logger, "Sending a channel_ready to our peer for channel {}", log_bytes!(self.channel_id));
- let announcement_sigs = self.get_announcement_sigs(node_pk, genesis_block_hash, user_config, height, logger);
+ let announcement_sigs = self.get_announcement_sigs(node_signer, genesis_block_hash, user_config, height, logger);
return Ok((Some(channel_ready), announcement_sigs));
}
}
///
/// May return some HTLCs (and their payment_hash) which have timed out and should be failed
/// back.
- pub fn best_block_updated<L: Deref>(&mut self, height: u32, highest_header_time: u32, genesis_block_hash: BlockHash, node_pk: PublicKey, user_config: UserConfig, logger: &L)
- -> Result<(Option<msgs::ChannelReady>, Vec<(HTLCSource, PaymentHash)>, Option<msgs::AnnouncementSignatures>), ClosureReason> where L::Target: Logger {
- self.do_best_block_updated(height, highest_header_time, Some((genesis_block_hash, node_pk, user_config)), logger)
+ pub fn best_block_updated<NS: Deref, L: Deref>(
+ &mut self, height: u32, highest_header_time: u32, genesis_block_hash: BlockHash,
+ node_signer: &NS, user_config: &UserConfig, logger: &L
+ ) -> Result<(Option<msgs::ChannelReady>, Vec<(HTLCSource, PaymentHash)>, Option<msgs::AnnouncementSignatures>), ClosureReason>
+ where
+ NS::Target: NodeSigner,
+ L::Target: Logger
+ {
+ self.do_best_block_updated(height, highest_header_time, Some((genesis_block_hash, node_signer, user_config)), logger)
}
- fn do_best_block_updated<L: Deref>(&mut self, height: u32, highest_header_time: u32, genesis_node_pk: Option<(BlockHash, PublicKey, UserConfig)>, logger: &L)
- -> Result<(Option<msgs::ChannelReady>, Vec<(HTLCSource, PaymentHash)>, Option<msgs::AnnouncementSignatures>), ClosureReason> where L::Target: Logger {
+ fn do_best_block_updated<NS: Deref, L: Deref>(
+ &mut self, height: u32, highest_header_time: u32,
+ genesis_node_signer: Option<(BlockHash, &NS, &UserConfig)>, logger: &L
+ ) -> Result<(Option<msgs::ChannelReady>, Vec<(HTLCSource, PaymentHash)>, Option<msgs::AnnouncementSignatures>), ClosureReason>
+ where
+ NS::Target: NodeSigner,
+ L::Target: Logger
+ {
let mut timed_out_htlcs = Vec::new();
// This mirrors the check in ChannelManager::decode_update_add_htlc_onion, refusing to
// forward an HTLC when our counterparty should almost certainly just fail it for expiring
self.update_time_counter = cmp::max(self.update_time_counter, highest_header_time);
if let Some(channel_ready) = self.check_get_channel_ready(height) {
- let announcement_sigs = if let Some((genesis_block_hash, node_pk, user_config)) = genesis_node_pk {
- self.get_announcement_sigs(node_pk, genesis_block_hash, &user_config, height, logger)
+ let announcement_sigs = if let Some((genesis_block_hash, node_signer, user_config)) = genesis_node_signer {
+ self.get_announcement_sigs(node_signer, genesis_block_hash, user_config, height, logger)
} else { None };
log_info!(logger, "Sending a channel_ready to our peer for channel {}", log_bytes!(self.channel_id));
return Ok((Some(channel_ready), timed_out_htlcs, announcement_sigs));
return Err(ClosureReason::FundingTimedOut);
}
- let announcement_sigs = if let Some((genesis_block_hash, node_pk, user_config)) = genesis_node_pk {
- self.get_announcement_sigs(node_pk, genesis_block_hash, &user_config, height, logger)
+ let announcement_sigs = if let Some((genesis_block_hash, node_signer, user_config)) = genesis_node_signer {
+ self.get_announcement_sigs(node_signer, genesis_block_hash, user_config, height, logger)
} else { None };
Ok((None, timed_out_htlcs, announcement_sigs))
}
// larger. If we don't know that time has moved forward, we can just set it to the last
// time we saw and it will be ignored.
let best_time = self.update_time_counter;
- match self.do_best_block_updated(reorg_height, best_time, None, logger) {
+ match self.do_best_block_updated(reorg_height, best_time, None::<(BlockHash, &&NodeSigner, &UserConfig)>, logger) {
Ok((channel_ready, timed_out_htlcs, announcement_sigs)) => {
assert!(channel_ready.is_none(), "We can't generate a funding with 0 confirmations?");
assert!(timed_out_htlcs.is_empty(), "We can't have accepted HTLCs with a timeout before our funding confirmation?");
/// closing).
///
/// This will only return ChannelError::Ignore upon failure.
- fn get_channel_announcement(&self, node_id: PublicKey, chain_hash: BlockHash, user_config: &UserConfig) -> Result<msgs::UnsignedChannelAnnouncement, ChannelError> {
+ fn get_channel_announcement<NS: Deref>(
+ &self, node_signer: &NS, chain_hash: BlockHash, user_config: &UserConfig,
+ ) -> Result<msgs::UnsignedChannelAnnouncement, ChannelError> where NS::Target: NodeSigner {
if !self.config.announced_channel {
return Err(ChannelError::Ignore("Channel is not available for public announcements".to_owned()));
}
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 msg = msgs::UnsignedChannelAnnouncement {
Ok(msg)
}
- fn get_announcement_sigs<L: Deref>(&mut self, node_pk: PublicKey, genesis_block_hash: BlockHash, user_config: &UserConfig, best_block_height: u32, logger: &L)
- -> Option<msgs::AnnouncementSignatures> where L::Target: Logger {
+ fn get_announcement_sigs<NS: Deref, L: Deref>(
+ &mut self, node_signer: &NS, genesis_block_hash: BlockHash, user_config: &UserConfig,
+ best_block_height: u32, logger: &L
+ ) -> Option<msgs::AnnouncementSignatures>
+ where
+ NS::Target: NodeSigner,
+ L::Target: Logger
+ {
if self.funding_tx_confirmation_height == 0 || self.funding_tx_confirmation_height + 5 > best_block_height {
return None;
}
}
log_trace!(logger, "Creating an announcement_signatures message for channel {}", log_bytes!(self.channel_id()));
- let announcement = match self.get_channel_announcement(node_pk, genesis_block_hash, user_config) {
+ let announcement = match self.get_channel_announcement(node_signer, genesis_block_hash, user_config) {
Ok(a) => a,
- Err(_) => {
- log_trace!(logger, "Cannot create an announcement_signatures as channel is not public.");
+ Err(e) => {
+ log_trace!(logger, "{:?}", e);
return None;
}
};
- let (our_node_sig, our_bitcoin_sig) = match self.holder_signer.sign_channel_announcement(&announcement, &self.secp_ctx) {
+ let our_node_sig = match node_signer.sign_gossip_message(msgs::UnsignedGossipMessage::ChannelAnnouncement(&announcement)) {
+ Err(_) => {
+ log_error!(logger, "Failed to generate node signature for channel_announcement. Channel will not be announced!");
+ return None;
+ },
+ Ok(v) => v
+ };
+ let our_bitcoin_sig = match self.holder_signer.sign_channel_announcement_with_funding_key(&announcement, &self.secp_ctx) {
Err(_) => {
log_error!(logger, "Signer rejected channel_announcement signing. Channel will not be announced!");
return None;
/// Signs the given channel announcement, returning a ChannelError::Ignore if no keys are
/// available.
- fn sign_channel_announcement(&self, our_node_id: PublicKey, announcement: msgs::UnsignedChannelAnnouncement) -> Result<msgs::ChannelAnnouncement, ChannelError> {
+ fn sign_channel_announcement<NS: Deref>(
+ &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 were_node_one = announcement.node_id_1 == our_node_id;
+ 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 were_node_one = announcement.node_id_1 == our_node_key;
- let (our_node_sig, our_bitcoin_sig) = self.holder_signer.sign_channel_announcement(&announcement, &self.secp_ctx)
+ let our_node_sig = node_signer.sign_gossip_message(msgs::UnsignedGossipMessage::ChannelAnnouncement(&announcement))
+ .map_err(|_| ChannelError::Ignore("Failed to generate node signature for channel_announcement".to_owned()))?;
+ let our_bitcoin_sig = self.holder_signer.sign_channel_announcement_with_funding_key(&announcement, &self.secp_ctx)
.map_err(|_| ChannelError::Ignore("Signer rejected channel_announcement".to_owned()))?;
Ok(msgs::ChannelAnnouncement {
node_signature_1: if were_node_one { our_node_sig } else { their_node_sig },
/// Processes an incoming announcement_signatures message, providing a fully-signed
/// channel_announcement message which we can broadcast and storing our counterparty's
/// signatures for later reconstruction/rebroadcast of the channel_announcement.
- pub fn announcement_signatures(&mut self, our_node_id: PublicKey, chain_hash: BlockHash, best_block_height: u32, msg: &msgs::AnnouncementSignatures, user_config: &UserConfig) -> Result<msgs::ChannelAnnouncement, ChannelError> {
- let announcement = self.get_channel_announcement(our_node_id.clone(), chain_hash, user_config)?;
+ pub fn announcement_signatures<NS: Deref>(
+ &mut self, node_signer: &NS, chain_hash: BlockHash, best_block_height: u32,
+ msg: &msgs::AnnouncementSignatures, user_config: &UserConfig
+ ) -> Result<msgs::ChannelAnnouncement, ChannelError> where NS::Target: NodeSigner {
+ let announcement = self.get_channel_announcement(node_signer, chain_hash, user_config)?;
let msghash = hash_to_message!(&Sha256d::hash(&announcement.encode()[..])[..]);
"Got announcement_signatures prior to the required six confirmations - we may not have received a block yet that our peer has".to_owned()));
}
- self.sign_channel_announcement(our_node_id, announcement)
+ self.sign_channel_announcement(node_signer, announcement)
}
/// Gets a signed channel_announcement for this channel, if we previously received an
/// announcement_signatures from our counterparty.
- pub fn get_signed_channel_announcement(&self, our_node_id: PublicKey, chain_hash: BlockHash, best_block_height: u32, user_config: &UserConfig) -> Option<msgs::ChannelAnnouncement> {
+ pub fn get_signed_channel_announcement<NS: Deref>(
+ &self, node_signer: &NS, chain_hash: BlockHash, best_block_height: u32, user_config: &UserConfig
+ ) -> Option<msgs::ChannelAnnouncement> where NS::Target: NodeSigner {
if self.funding_tx_confirmation_height == 0 || self.funding_tx_confirmation_height + 5 > best_block_height {
return None;
}
- let announcement = match self.get_channel_announcement(our_node_id.clone(), chain_hash, user_config) {
+ let announcement = match self.get_channel_announcement(node_signer, chain_hash, user_config) {
Ok(res) => res,
Err(_) => return None,
};
- match self.sign_channel_announcement(our_node_id, announcement) {
+ match self.sign_channel_announcement(node_signer, announcement) {
Ok(res) => Some(res),
Err(_) => None,
}
}
}
-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.
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, Recipient, KeyMaterial, EntropySource, NodeSigner, 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 crate::util::errors::APIError;
use crate::util::test_utils;
use crate::util::test_utils::OnGetShutdownScriptpubkey;
- use bitcoin::secp256k1::{Secp256k1, ecdsa::Signature, Scalar};
+ 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;
use bitcoin::hash_types::WPubkeyHash;
- use bitcoin::bech32::u5;
use bitcoin::PackedLockTime;
use bitcoin::util::address::WitnessVersion;
use crate::prelude::*;
fn get_secure_random_bytes(&self) -> [u8; 32] { [0; 32] }
}
- impl NodeSigner for Keys {
- fn get_node_secret(&self, _recipient: Recipient) -> Result<SecretKey, ()> { panic!(); }
-
- fn get_node_id(&self, recipient: Recipient) -> Result<PublicKey, ()> {
- let secp_ctx = Secp256k1::signing_only();
- Ok(PublicKey::from_secret_key(&secp_ctx, &self.get_node_secret(recipient)?))
- }
-
- fn ecdh(&self, _recipient: Recipient, _other_key: &PublicKey, _tweak: Option<&Scalar>) -> Result<SharedSecret, ()> { panic!(); }
-
- fn get_inbound_payment_key_material(&self) -> KeyMaterial { panic!(); }
-
- fn sign_invoice(&self, _hrp_bytes: &[u8], _invoice_data: &[u5], _recipient: Recipient) -> Result<RecoverableSignature, ()> { panic!(); }
- }
-
impl SignerProvider for Keys {
type Signer = InMemorySigner;
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};
let mut signer = InMemorySigner::new(
&secp_ctx,
- SecretKey::from_slice(&hex::decode("4242424242424242424242424242424242424242424242424242424242424242").unwrap()[..]).unwrap(),
SecretKey::from_slice(&hex::decode("30ff4956bbdd3222d44cc5e8a1261dab1e07957bdac5ae88fe3261ef321f3749").unwrap()[..]).unwrap(),
SecretKey::from_slice(&hex::decode("0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()[..]).unwrap(),
SecretKey::from_slice(&hex::decode("1111111111111111111111111111111111111111111111111111111111111111").unwrap()[..]).unwrap(),
projects / rust-lightning / blobdiff