use ln::msgs::{DecodeError, OptionalField, DataLossProtect};
use ln::script::ShutdownScript;
use ln::channelmanager::{PendingHTLCStatus, HTLCSource, HTLCFailReason, HTLCFailureMsg, PendingHTLCInfo, RAACommitmentOrder, BREAKDOWN_TIMEOUT, MIN_CLTV_EXPIRY_DELTA, MAX_LOCAL_BREAKDOWN_TIMEOUT};
-use ln::chan_utils::{CounterpartyCommitmentSecrets, TxCreationKeys, HTLCOutputInCommitment, HTLC_SUCCESS_TX_WEIGHT, HTLC_TIMEOUT_TX_WEIGHT, make_funding_redeemscript, ChannelPublicKeys, CommitmentTransaction, HolderCommitmentTransaction, ChannelTransactionParameters, CounterpartyChannelTransactionParameters, MAX_HTLCS, get_commitment_transaction_number_obscure_factor, build_closing_transaction};
+use ln::chan_utils::{CounterpartyCommitmentSecrets, TxCreationKeys, HTLCOutputInCommitment, HTLC_SUCCESS_TX_WEIGHT, HTLC_TIMEOUT_TX_WEIGHT, make_funding_redeemscript, ChannelPublicKeys, CommitmentTransaction, HolderCommitmentTransaction, ChannelTransactionParameters, CounterpartyChannelTransactionParameters, MAX_HTLCS, get_commitment_transaction_number_obscure_factor, ClosingTransaction};
use ln::chan_utils;
use chain::BestBlock;
use chain::chaininterface::{FeeEstimator,ConfirmationTarget};
}
#[inline]
- fn build_closing_transaction(&self, proposed_total_fee_satoshis: u64, skip_remote_output: bool) -> (Transaction, u64) {
+ fn build_closing_transaction(&self, proposed_total_fee_satoshis: u64, skip_remote_output: bool) -> (ClosingTransaction, u64) {
assert!(self.pending_inbound_htlcs.is_empty());
assert!(self.pending_outbound_htlcs.is_empty());
assert!(self.pending_update_fee.is_none());
let counterparty_shutdown_script = self.counterparty_shutdown_scriptpubkey.clone().unwrap();
let funding_outpoint = self.funding_outpoint().into_bitcoin_outpoint();
- (build_closing_transaction(value_to_holder as u64, value_to_counterparty as u64, holder_shutdown_script, counterparty_shutdown_script, funding_outpoint), total_fee_satoshis)
+ let closing_transaction = ClosingTransaction::new(value_to_holder as u64, value_to_counterparty as u64, holder_shutdown_script, counterparty_shutdown_script, funding_outpoint);
+ (closing_transaction, total_fee_satoshis)
}
fn funding_outpoint(&self) -> OutPoint {
Ok((shutdown, monitor_update, dropped_outbound_htlcs))
}
- fn build_signed_closing_transaction(&self, tx: &mut Transaction, counterparty_sig: &Signature, sig: &Signature) {
- if tx.input.len() != 1 { panic!("Tried to sign closing transaction that had input count != 1!"); }
- if tx.input[0].witness.len() != 0 { panic!("Tried to re-sign closing transaction"); }
- if tx.output.len() > 2 { panic!("Tried to sign bogus closing transaction"); }
+ fn build_signed_closing_transaction(&self, closing_tx: &ClosingTransaction, counterparty_sig: &Signature, sig: &Signature) -> Transaction {
+ let mut tx = closing_tx.trust().built_transaction().clone();
tx.input[0].witness.push(Vec::new()); // First is the multisig dummy
tx.input[0].witness[2].push(SigHashType::All as u8);
tx.input[0].witness.push(self.get_funding_redeemscript().into_bytes());
+ tx
}
pub fn closing_signed<F: Deref>(&mut self, fee_estimator: &F, msg: &msgs::ClosingSigned) -> Result<(Option<msgs::ClosingSigned>, Option<Transaction>), ChannelError>
if used_total_fee != msg.fee_satoshis {
return Err(ChannelError::Close(format!("Remote sent us a closing_signed with a fee other than the value they can claim. Fee in message: {}. Actual closing tx fee: {}", msg.fee_satoshis, used_total_fee)));
}
- let mut sighash = hash_to_message!(&bip143::SigHashCache::new(&closing_tx).signature_hash(0, &funding_redeemscript, self.channel_value_satoshis, SigHashType::All)[..]);
+ let sighash = closing_tx.trust().get_sighash_all(&funding_redeemscript, self.channel_value_satoshis);
match self.secp_ctx.verify(&sighash, &msg.signature, &self.get_counterparty_pubkeys().funding_pubkey) {
Ok(_) => {},
// The remote end may have decided to revoke their output due to inconsistent dust
// limits, so check for that case by re-checking the signature here.
closing_tx = self.build_closing_transaction(msg.fee_satoshis, true).0;
- sighash = hash_to_message!(&bip143::SigHashCache::new(&closing_tx).signature_hash(0, &funding_redeemscript, self.channel_value_satoshis, SigHashType::All)[..]);
+ let sighash = closing_tx.trust().get_sighash_all(&funding_redeemscript, self.channel_value_satoshis);
secp_check!(self.secp_ctx.verify(&sighash, &msg.signature, self.counterparty_funding_pubkey()), "Invalid closing tx signature from peer".to_owned());
},
};
assert!(self.shutdown_scriptpubkey.is_some());
if let Some((last_fee, sig)) = self.last_sent_closing_fee {
if last_fee == msg.fee_satoshis {
- self.build_signed_closing_transaction(&mut closing_tx, &msg.signature, &sig);
+ let tx = self.build_signed_closing_transaction(&mut closing_tx, &msg.signature, &sig);
self.channel_state = ChannelState::ShutdownComplete as u32;
self.update_time_counter += 1;
- return Ok((None, Some(closing_tx)));
+ return Ok((None, Some(tx)));
}
}
macro_rules! propose_fee {
($new_fee: expr) => {
- let (mut tx, used_fee) = if $new_fee == msg.fee_satoshis {
+ let (closing_tx, used_fee) = if $new_fee == msg.fee_satoshis {
(closing_tx, $new_fee)
} else {
self.build_closing_transaction($new_fee, false)
};
let sig = self.holder_signer
- .sign_closing_transaction(&tx, &self.secp_ctx)
+ .sign_closing_transaction(&closing_tx, &self.secp_ctx)
.map_err(|_| ChannelError::Close("External signer refused to sign closing transaction".to_owned()))?;
let signed_tx = if $new_fee == msg.fee_satoshis {
self.channel_state = ChannelState::ShutdownComplete as u32;
self.update_time_counter += 1;
- self.build_signed_closing_transaction(&mut tx, &msg.signature, &sig);
+ let tx = self.build_signed_closing_transaction(&closing_tx, &msg.signature, &sig);
Some(tx)
} else { None };
projects / rust-lightning / blobdiff