counterparty_max_commitment_tx_output: Mutex<(u64, u64)>,
last_sent_closing_fee: Option<(u64, Signature)>, // (fee, holder_sig)
- closing_fee_limits: Option<(u64, u64)>,
target_closing_feerate_sats_per_kw: Option<u32>,
/// If our counterparty sent us a closing_signed while we were waiting for a `ChannelMonitor`
/// closing_signed message and handling it in `maybe_propose_closing_signed`.
pending_counterparty_closing_signed: Option<msgs::ClosingSigned>,
+ /// The minimum and maximum absolute fee we are willing to place on the closing transaction.
+ /// These are set once we reach `closing_negotiation_ready`.
+ #[cfg(test)]
+ pub(crate) closing_fee_limits: Option<(u64, u64)>,
+ #[cfg(not(test))]
+ closing_fee_limits: Option<(u64, u64)>,
+
/// The hash of the block in which the funding transaction was included.
funding_tx_confirmed_in: Option<BlockHash>,
funding_tx_confirmation_height: u32,
#[cfg(test)]
pub const COMMITMENT_TX_WEIGHT_PER_HTLC: u64 = 172;
-/// Maximmum `funding_satoshis` value, according to the BOLT #2 specification
+pub const ANCHOR_OUTPUT_VALUE_SATOSHI: u64 = 330;
+
+/// Maximum `funding_satoshis` value, according to the BOLT #2 specification
/// it's 2^24.
pub const MAX_FUNDING_SATOSHIS: u64 = 1 << 24;
let mut value_to_a = if local { value_to_self } else { value_to_remote };
let mut value_to_b = if local { value_to_remote } else { value_to_self };
+ let (funding_pubkey_a, funding_pubkey_b) = if local {
+ (self.get_holder_pubkeys().funding_pubkey, self.get_counterparty_pubkeys().funding_pubkey)
+ } else {
+ (self.get_counterparty_pubkeys().funding_pubkey, self.get_holder_pubkeys().funding_pubkey)
+ };
if value_to_a >= (broadcaster_dust_limit_satoshis as i64) {
log_trace!(logger, " ...including {} output with value {}", if local { "to_local" } else { "to_remote" }, value_to_a);
let tx = CommitmentTransaction::new_with_auxiliary_htlc_data(commitment_number,
value_to_a as u64,
value_to_b as u64,
+ false,
+ funding_pubkey_a,
+ funding_pubkey_b,
keys.clone(),
feerate_per_kw,
&mut included_non_dust_htlcs,
self.counterparty_funding_pubkey()
);
+ self.holder_signer.validate_holder_commitment(&holder_commitment_tx)
+ .map_err(|_| ChannelError::Close("Failed to validate our commitment".to_owned()))?;
+
// Now that we're past error-generating stuff, update our local state:
let funding_redeemscript = self.get_funding_redeemscript();
self.counterparty_funding_pubkey()
);
+ self.holder_signer.validate_holder_commitment(&holder_commitment_tx)
+ .map_err(|_| ChannelError::Close("Failed to validate our commitment".to_owned()))?;
+
let funding_redeemscript = self.get_funding_redeemscript();
let funding_txo = self.get_funding_txo().unwrap();
);
let next_per_commitment_point = self.holder_signer.get_per_commitment_point(self.cur_holder_commitment_transaction_number - 1, &self.secp_ctx);
+ self.holder_signer.validate_holder_commitment(&holder_commitment_tx)
+ .map_err(|_| (None, ChannelError::Close("Failed to validate our commitment".to_owned())))?;
let per_commitment_secret = self.holder_signer.release_commitment_secret(self.cur_holder_commitment_transaction_number + 1);
// Update state now that we've passed all the can-fail calls...
return Err(ChannelError::Close("Peer sent revoke_and_ack after we'd started exchanging closing_signeds".to_owned()));
}
+ let secret = secp_check!(SecretKey::from_slice(&msg.per_commitment_secret), "Peer provided an invalid per_commitment_secret".to_owned());
+
if let Some(counterparty_prev_commitment_point) = self.counterparty_prev_commitment_point {
- if PublicKey::from_secret_key(&self.secp_ctx, &secp_check!(SecretKey::from_slice(&msg.per_commitment_secret), "Peer provided an invalid per_commitment_secret".to_owned())) != counterparty_prev_commitment_point {
+ if PublicKey::from_secret_key(&self.secp_ctx, &secret) != counterparty_prev_commitment_point {
return Err(ChannelError::Close("Got a revoke commitment secret which didn't correspond to their current pubkey".to_owned()));
}
}
*self.next_remote_commitment_tx_fee_info_cached.lock().unwrap() = None;
}
+ self.holder_signer.validate_counterparty_revocation(
+ self.cur_counterparty_commitment_transaction_number + 1,
+ &secret
+ ).map_err(|_| ChannelError::Close("Failed to validate revocation from peer".to_owned()))?;
+
self.commitment_secrets.provide_secret(self.cur_counterparty_commitment_transaction_number + 1, msg.per_commitment_secret)
.map_err(|_| ChannelError::Close("Previous secrets did not match new one".to_owned()))?;
self.latest_monitor_update_id += 1;
let funding_redeemscript = self.get_funding_redeemscript();
let (mut closing_tx, used_total_fee) = self.build_closing_transaction(msg.fee_satoshis, false);
if used_total_fee != msg.fee_satoshis {
- return Err(ChannelError::Close(format!("Remote sent us a closing_signed with a fee greater than the value they can claim. Fee in message: {}", 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)[..]);