use ln::features::{ChannelFeatures, InitFeatures};
use ln::msgs;
use ln::msgs::{DecodeError, OptionalField, DataLossProtect};
-use ln::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateStep, HTLC_FAIL_BACK_BUFFER};
use ln::channelmanager::{PendingHTLCStatus, HTLCSource, HTLCFailReason, HTLCFailureMsg, PendingHTLCInfo, RAACommitmentOrder, PaymentPreimage, PaymentHash, BREAKDOWN_TIMEOUT, MAX_LOCAL_BREAKDOWN_TIMEOUT};
-use ln::chan_utils::{CounterpartyCommitmentSecrets, LocalCommitmentTransaction, TxCreationKeys, HTLCOutputInCommitment, HTLC_SUCCESS_TX_WEIGHT, HTLC_TIMEOUT_TX_WEIGHT, make_funding_redeemscript, ChannelPublicKeys, PreCalculatedTxCreationKeys};
+use ln::chan_utils::{CounterpartyCommitmentSecrets, HolderCommitmentTransaction, TxCreationKeys, HTLCOutputInCommitment, HTLC_SUCCESS_TX_WEIGHT, HTLC_TIMEOUT_TX_WEIGHT, make_funding_redeemscript, ChannelPublicKeys, PreCalculatedTxCreationKeys};
use ln::chan_utils;
use chain::chaininterface::{FeeEstimator,ConfirmationTarget};
-use chain::transaction::OutPoint;
+use chain::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateStep, HTLC_FAIL_BACK_BUFFER};
+use chain::transaction::{OutPoint, TransactionData};
use chain::keysinterface::{ChannelKeys, KeysInterface};
use util::transaction_utils;
use util::ser::{Readable, Writeable, Writer};
// has been completed, and then turn into a Channel to get compiler-time enforcement of things like
// calling channel_id() before we're set up or things like get_outbound_funding_signed on an
// inbound channel.
+//
+// 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<ChanSigner: ChannelKeys> {
config: ChannelConfig,
txouts.push((TxOut {
script_pubkey: chan_utils::get_revokeable_redeemscript(&keys.revocation_key,
if local { self.counterparty_selected_contest_delay } else { self.holder_selected_contest_delay },
- &keys.delayed_payment_key).to_v0_p2wsh(),
+ &keys.broadcaster_delayed_payment_key).to_v0_p2wsh(),
value: value_to_a as u64
}, None));
}
/// @local is used only to convert relevant internal structures which refer to remote vs local
/// to decide value of outputs and direction of HTLCs.
fn build_htlc_transaction(&self, prev_hash: &Txid, htlc: &HTLCOutputInCommitment, local: bool, keys: &TxCreationKeys, feerate_per_kw: u32) -> Transaction {
- chan_utils::build_htlc_transaction(prev_hash, feerate_per_kw, if local { self.counterparty_selected_contest_delay } else { self.holder_selected_contest_delay }, htlc, &keys.delayed_payment_key, &keys.revocation_key)
+ chan_utils::build_htlc_transaction(prev_hash, feerate_per_kw, if local { self.counterparty_selected_contest_delay } else { self.holder_selected_contest_delay }, htlc, &keys.broadcaster_delayed_payment_key, &keys.revocation_key)
}
/// Per HTLC, only one get_update_fail_htlc or get_update_fulfill_htlc call may be made.
Ok(())
}
- fn funding_created_signature<L: Deref>(&mut self, sig: &Signature, logger: &L) -> Result<(Transaction, LocalCommitmentTransaction, Signature), ChannelError> where L::Target: Logger {
+ fn funding_created_signature<L: Deref>(&mut self, sig: &Signature, logger: &L) -> Result<(Transaction, HolderCommitmentTransaction, Signature), ChannelError> where L::Target: Logger {
let funding_script = self.get_funding_redeemscript();
let keys = self.build_holder_transaction_keys(self.cur_holder_commitment_transaction_number)?;
log_trace!(logger, "Checking funding_created tx signature {} by key {} against tx {} (sighash {}) with redeemscript {}", log_bytes!(sig.serialize_compact()[..]), log_bytes!(self.counterparty_funding_pubkey().serialize()), encode::serialize_hex(&initial_commitment_tx), log_bytes!(sighash[..]), encode::serialize_hex(&funding_script));
secp_check!(self.secp_ctx.verify(&sighash, &sig, self.counterparty_funding_pubkey()), "Invalid funding_created signature from peer".to_owned());
- let tx = LocalCommitmentTransaction::new_missing_local_sig(initial_commitment_tx, sig.clone(), &self.holder_keys.pubkeys().funding_pubkey, self.counterparty_funding_pubkey(), keys, self.feerate_per_kw, Vec::new());
+ let tx = HolderCommitmentTransaction::new_missing_holder_sig(initial_commitment_tx, sig.clone(), &self.holder_keys.pubkeys().funding_pubkey, self.counterparty_funding_pubkey(), keys, self.feerate_per_kw, Vec::new());
let counterparty_keys = self.build_remote_transaction_keys()?;
let counterparty_initial_commitment_tx = self.build_commitment_transaction(self.cur_counterparty_commitment_transaction_number, &counterparty_keys, false, false, self.feerate_per_kw, logger).0;
let pre_remote_keys = PreCalculatedTxCreationKeys::new(counterparty_keys);
- let counterparty_signature = self.holder_keys.sign_remote_commitment(self.feerate_per_kw, &counterparty_initial_commitment_tx, &pre_remote_keys, &Vec::new(), &self.secp_ctx)
+ let counterparty_signature = self.holder_keys.sign_counterparty_commitment(self.feerate_per_kw, &counterparty_initial_commitment_tx, &pre_remote_keys, &Vec::new(), &self.secp_ctx)
.map_err(|_| ChannelError::Close("Failed to get signatures for new commitment_signed".to_owned()))?.0;
// We sign "counterparty" commitment transaction, allowing them to broadcast the tx if they wish.
self.get_commitment_transaction_number_obscure_factor(),
initial_commitment_tx.clone());
- channel_monitor.provide_latest_remote_commitment_tx_info(&counterparty_initial_commitment_tx, Vec::new(), self.cur_counterparty_commitment_transaction_number, self.counterparty_cur_commitment_point.unwrap(), logger);
+ channel_monitor.provide_latest_counterparty_commitment_tx_info(&counterparty_initial_commitment_tx, Vec::new(), self.cur_counterparty_commitment_transaction_number, self.counterparty_cur_commitment_point.unwrap(), logger);
channel_monitor
} }
}
let funding_txo_script = funding_redeemscript.to_v0_p2wsh();
macro_rules! create_monitor {
() => { {
- let commitment_tx = LocalCommitmentTransaction::new_missing_local_sig(initial_commitment_tx.clone(), msg.signature.clone(), &self.holder_keys.pubkeys().funding_pubkey, counterparty_funding_pubkey, holder_keys.clone(), self.feerate_per_kw, Vec::new());
+ let commitment_tx = HolderCommitmentTransaction::new_missing_holder_sig(initial_commitment_tx.clone(), msg.signature.clone(), &self.holder_keys.pubkeys().funding_pubkey, counterparty_funding_pubkey, holder_keys.clone(), self.feerate_per_kw, Vec::new());
let mut channel_monitor = ChannelMonitor::new(self.holder_keys.clone(),
&self.shutdown_pubkey, self.holder_selected_contest_delay,
&self.destination_script, (funding_txo.clone(), funding_txo_script.clone()),
self.get_commitment_transaction_number_obscure_factor(),
commitment_tx);
- channel_monitor.provide_latest_remote_commitment_tx_info(&counterparty_initial_commitment_tx, Vec::new(), self.cur_counterparty_commitment_transaction_number, self.counterparty_cur_commitment_point.unwrap(), logger);
+ channel_monitor.provide_latest_counterparty_commitment_tx_info(&counterparty_initial_commitment_tx, Vec::new(), self.cur_counterparty_commitment_transaction_number, self.counterparty_cur_commitment_point.unwrap(), logger);
channel_monitor
} }
self.latest_monitor_update_id += 1;
let mut monitor_update = ChannelMonitorUpdate {
update_id: self.latest_monitor_update_id,
- updates: vec![ChannelMonitorUpdateStep::LatestLocalCommitmentTXInfo {
- commitment_tx: LocalCommitmentTransaction::new_missing_local_sig(commitment_tx.0, msg.signature.clone(), &self.holder_keys.pubkeys().funding_pubkey, &counterparty_funding_pubkey, keys, self.feerate_per_kw, htlcs_without_source),
+ updates: vec![ChannelMonitorUpdateStep::LatestHolderCommitmentTXInfo {
+ commitment_tx: HolderCommitmentTransaction::new_missing_holder_sig(commitment_tx.0, msg.signature.clone(), &self.holder_keys.pubkeys().funding_pubkey, &counterparty_funding_pubkey, keys, self.feerate_per_kw, htlcs_without_source),
htlc_outputs: htlcs_and_sigs
}]
};
if !self.pending_inbound_htlcs.is_empty() || !self.pending_outbound_htlcs.is_empty() {
return Err(ChannelError::Close("Remote end sent us a closing_signed while there were still pending HTLCs".to_owned()));
}
- if msg.fee_satoshis > 21000000 * 10000000 { //this is required to stop potential overflow in build_closing_transaction
+ if msg.fee_satoshis > 21_000_000 * 1_0000_0000 { //this is required to stop potential overflow in build_closing_transaction
return Err(ChannelError::Close("Remote tried to send us a closing tx with > 21 million BTC fee".to_owned()));
}
}
/// Allowed in any state (including after shutdown)
+ #[cfg(test)]
pub fn get_holder_htlc_minimum_msat(&self) -> u64 {
self.holder_htlc_minimum_msat
}
/// Allowed in any state (including after shutdown)
pub fn get_counterparty_htlc_minimum_msat(&self) -> u64 {
- self.holder_htlc_minimum_msat
+ self.counterparty_htlc_minimum_msat
}
pub fn get_value_satoshis(&self) -> u64 {
self.cur_counterparty_commitment_transaction_number + 1 - if self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32) != 0 { 1 } else { 0 }
}
- pub fn get_revoked_remote_commitment_transaction_number(&self) -> u64 {
+ pub fn get_revoked_counterparty_commitment_transaction_number(&self) -> u64 {
self.cur_counterparty_commitment_transaction_number + 2
}
///
/// May return some HTLCs (and their payment_hash) which have timed out and should be failed
/// back.
- pub fn block_connected(&mut self, header: &BlockHeader, height: u32, txn_matched: &[&Transaction], indexes_of_txn_matched: &[usize]) -> Result<(Option<msgs::FundingLocked>, Vec<(HTLCSource, PaymentHash)>), msgs::ErrorMessage> {
+ pub fn block_connected(&mut self, header: &BlockHeader, txdata: &TransactionData, height: u32) -> Result<(Option<msgs::FundingLocked>, Vec<(HTLCSource, PaymentHash)>), msgs::ErrorMessage> {
let mut timed_out_htlcs = Vec::new();
self.holding_cell_htlc_updates.retain(|htlc_update| {
match htlc_update {
}
}
if non_shutdown_state & !(ChannelState::TheirFundingLocked as u32) == ChannelState::FundingSent as u32 {
- for (ref tx, index_in_block) in txn_matched.iter().zip(indexes_of_txn_matched) {
+ for &(index_in_block, tx) in txdata.iter() {
if tx.txid() == self.funding_txo.unwrap().txid {
let txo_idx = self.funding_txo.unwrap().index as usize;
if txo_idx >= tx.output.len() || tx.output[txo_idx].script_pubkey != self.get_funding_redeemscript().to_v0_p2wsh() ||
}
}
}
- if height > 0xff_ff_ff || (*index_in_block) > 0xff_ff_ff {
+ if height > 0xff_ff_ff || (index_in_block) > 0xff_ff_ff {
panic!("Block was bogus - either height 16 million or had > 16 million transactions");
}
assert!(txo_idx <= 0xffff); // txo_idx is a (u16 as usize), so this is just listed here for completeness
self.funding_tx_confirmations = 1;
- self.short_channel_id = Some(((height as u64) << (5*8)) |
- ((*index_in_block as u64) << (2*8)) |
- ((txo_idx as u64) << (0*8)));
+ self.short_channel_id = Some(((height as u64) << (5*8)) |
+ ((index_in_block as u64) << (2*8)) |
+ ((txo_idx as u64) << (0*8)));
}
}
}
let counterparty_keys = self.build_remote_transaction_keys()?;
let counterparty_initial_commitment_tx = self.build_commitment_transaction(self.cur_counterparty_commitment_transaction_number, &counterparty_keys, false, false, self.feerate_per_kw, logger).0;
let pre_remote_keys = PreCalculatedTxCreationKeys::new(counterparty_keys);
- Ok(self.holder_keys.sign_remote_commitment(self.feerate_per_kw, &counterparty_initial_commitment_tx, &pre_remote_keys, &Vec::new(), &self.secp_ctx)
+ Ok(self.holder_keys.sign_counterparty_commitment(self.feerate_per_kw, &counterparty_initial_commitment_tx, &pre_remote_keys, &Vec::new(), &self.secp_ctx)
.map_err(|_| ChannelError::Close("Failed to get signatures for new commitment_signed".to_owned()))?.0)
}
self.latest_monitor_update_id += 1;
let monitor_update = ChannelMonitorUpdate {
update_id: self.latest_monitor_update_id,
- updates: vec![ChannelMonitorUpdateStep::LatestRemoteCommitmentTXInfo {
+ updates: vec![ChannelMonitorUpdateStep::LatestCounterpartyCommitmentTXInfo {
unsigned_commitment_tx: counterparty_commitment_tx.clone(),
htlc_outputs: htlcs.clone(),
commitment_number: self.cur_counterparty_commitment_transaction_number,
}
let pre_remote_keys = PreCalculatedTxCreationKeys::new(counterparty_keys);
- let res = self.holder_keys.sign_remote_commitment(feerate_per_kw, &counterparty_commitment_tx.0, &pre_remote_keys, &htlcs, &self.secp_ctx)
+ let res = self.holder_keys.sign_counterparty_commitment(feerate_per_kw, &counterparty_commitment_tx.0, &pre_remote_keys, &htlcs, &self.secp_ctx)
.map_err(|_| ChannelError::Close("Failed to get signatures for new commitment_signed".to_owned()))?;
signature = res.0;
htlc_signatures = res.1;
for (ref htlc_sig, ref htlc) in htlc_signatures.iter().zip(htlcs) {
log_trace!(logger, "Signed remote HTLC tx {} with redeemscript {} with pubkey {} -> {}",
- encode::serialize_hex(&chan_utils::build_htlc_transaction(&counterparty_commitment_tx.0.txid(), feerate_per_kw, self.holder_selected_contest_delay, htlc, &counterparty_keys.delayed_payment_key, &counterparty_keys.revocation_key)),
+ encode::serialize_hex(&chan_utils::build_htlc_transaction(&counterparty_commitment_tx.0.txid(), feerate_per_kw, self.holder_selected_contest_delay, htlc, &counterparty_keys.broadcaster_delayed_payment_key, &counterparty_keys.revocation_key)),
encode::serialize_hex(&chan_utils::get_htlc_redeemscript(&htlc, counterparty_keys)),
log_bytes!(counterparty_keys.broadcaster_htlc_key.serialize()),
log_bytes!(htlc_sig.serialize_compact()[..]));
use ln::features::InitFeatures;
use ln::msgs::{OptionalField, DataLossProtect};
use ln::chan_utils;
- use ln::chan_utils::{LocalCommitmentTransaction, ChannelPublicKeys};
+ use ln::chan_utils::{HolderCommitmentTransaction, ChannelPublicKeys};
use chain::chaininterface::{FeeEstimator,ConfirmationTarget};
use chain::keysinterface::{InMemoryChannelKeys, KeysInterface};
use chain::transaction::OutPoint;
let mut unsigned_tx: (Transaction, Vec<HTLCOutputInCommitment>);
- let mut localtx;
+ let mut holdertx;
macro_rules! test_commitment {
( $counterparty_sig_hex: expr, $sig_hex: expr, $tx_hex: expr, {
$( { $htlc_idx: expr, $counterparty_htlc_sig_hex: expr, $htlc_sig_hex: expr, $htlc_tx_hex: expr } ), *
})*
assert_eq!(unsigned_tx.1.len(), per_htlc.len());
- localtx = LocalCommitmentTransaction::new_missing_local_sig(unsigned_tx.0.clone(), counterparty_signature.clone(), &chan_keys.pubkeys().funding_pubkey, chan.counterparty_funding_pubkey(), keys.clone(), chan.feerate_per_kw, per_htlc);
- let local_sig = chan_keys.sign_local_commitment(&localtx, &chan.secp_ctx).unwrap();
- assert_eq!(Signature::from_der(&hex::decode($sig_hex).unwrap()[..]).unwrap(), local_sig);
+ holdertx = HolderCommitmentTransaction::new_missing_holder_sig(unsigned_tx.0.clone(), counterparty_signature.clone(), &chan_keys.pubkeys().funding_pubkey, chan.counterparty_funding_pubkey(), keys.clone(), chan.feerate_per_kw, per_htlc);
+ let holder_sig = chan_keys.sign_holder_commitment(&holdertx, &chan.secp_ctx).unwrap();
+ assert_eq!(Signature::from_der(&hex::decode($sig_hex).unwrap()[..]).unwrap(), holder_sig);
- assert_eq!(serialize(&localtx.add_local_sig(&redeemscript, local_sig))[..],
+ assert_eq!(serialize(&holdertx.add_holder_sig(&redeemscript, holder_sig))[..],
hex::decode($tx_hex).unwrap()[..]);
- let htlc_sigs = chan_keys.sign_local_commitment_htlc_transactions(&localtx, &chan.secp_ctx).unwrap();
- let mut htlc_sig_iter = localtx.per_htlc.iter().zip(htlc_sigs.iter().enumerate());
+ let htlc_sigs = chan_keys.sign_holder_commitment_htlc_transactions(&holdertx, &chan.secp_ctx).unwrap();
+ let mut htlc_sig_iter = holdertx.per_htlc.iter().zip(htlc_sigs.iter().enumerate());
$({
let remote_signature = Signature::from_der(&hex::decode($counterparty_htlc_sig_hex).unwrap()[..]).unwrap();
let signature = Signature::from_der(&hex::decode($htlc_sig_hex).unwrap()[..]).unwrap();
assert_eq!(Some(signature), *(htlc_sig.1).1);
- assert_eq!(serialize(&localtx.get_signed_htlc_tx((htlc_sig.1).0, &(htlc_sig.1).1.unwrap(), &preimage, chan.counterparty_selected_contest_delay))[..],
+ assert_eq!(serialize(&holdertx.get_signed_htlc_tx((htlc_sig.1).0, &(htlc_sig.1).1.unwrap(), &preimage, chan.counterparty_selected_contest_delay))[..],
hex::decode($htlc_tx_hex).unwrap()[..]);
})*
loop {
projects / rust-lightning / blobdiff