+ fn sign_latest_holder_htlcs(&mut self) {
+ if let Some(ref holder_commitment) = self.holder_commitment {
+ if let Ok(sigs) = self.key_storage.sign_holder_commitment_htlc_transactions(holder_commitment, &self.secp_ctx) {
+ self.holder_htlc_sigs = Some(Vec::new());
+ let ret = self.holder_htlc_sigs.as_mut().unwrap();
+ for (htlc_idx, (holder_sig, &(ref htlc, _))) in sigs.iter().zip(holder_commitment.per_htlc.iter()).enumerate() {
+ if let Some(tx_idx) = htlc.transaction_output_index {
+ if ret.len() <= tx_idx as usize { ret.resize(tx_idx as usize + 1, None); }
+ ret[tx_idx as usize] = Some((htlc_idx, holder_sig.expect("Did not receive a signature for a non-dust HTLC")));
+ } else {
+ assert!(holder_sig.is_none(), "Received a signature for a dust HTLC");
+ }
+ }
+ }
+ }
+ }
+ fn sign_prev_holder_htlcs(&mut self) {
+ if let Some(ref holder_commitment) = self.prev_holder_commitment {
+ if let Ok(sigs) = self.key_storage.sign_holder_commitment_htlc_transactions(holder_commitment, &self.secp_ctx) {
+ self.prev_holder_htlc_sigs = Some(Vec::new());
+ let ret = self.prev_holder_htlc_sigs.as_mut().unwrap();
+ for (htlc_idx, (holder_sig, &(ref htlc, _))) in sigs.iter().zip(holder_commitment.per_htlc.iter()).enumerate() {
+ if let Some(tx_idx) = htlc.transaction_output_index {
+ if ret.len() <= tx_idx as usize { ret.resize(tx_idx as usize + 1, None); }
+ ret[tx_idx as usize] = Some((htlc_idx, holder_sig.expect("Did not receive a signature for a non-dust HTLC")));
+ } else {
+ assert!(holder_sig.is_none(), "Received a signature for a dust HTLC");
+ }
+ }
+ }
+ }
+ }
+
+ //TODO: getting lastest holder transactions should be infaillible and result in us "force-closing the channel", but we may
+ // have empty holder commitment transaction if a ChannelMonitor is asked to force-close just after Channel::get_outbound_funding_created,