+ panic!("Unknown-required-features ChannelAnnouncements should never deserialize!");
+ }
+
+ match self.chain_monitor.get_chain_utxo(msg.contents.chain_hash, msg.contents.short_channel_id) {
+ Ok((script_pubkey, _value)) => {
+ let expected_script = Builder::new().push_opcode(opcodes::All::OP_PUSHNUM_2)
+ .push_slice(&msg.contents.bitcoin_key_1.serialize())
+ .push_slice(&msg.contents.bitcoin_key_2.serialize())
+ .push_opcode(opcodes::All::OP_PUSHNUM_2).push_opcode(opcodes::All::OP_CHECKMULTISIG).into_script().to_v0_p2wsh();
+ if script_pubkey != expected_script {
+ return Err(HandleError{err: "Channel announcement keys didn't match on-chain script", action: Some(ErrorAction::IgnoreError)});
+ }
+ //TODO: Check if value is worth storing, use it to inform routing, and compare it
+ //to the new HTLC max field in channel_update
+ },
+ Err(ChainError::NotSupported) => {
+ // Tentatively accept, potentially exposing us to DoS attacks
+ },
+ Err(ChainError::NotWatched) => {
+ return Err(HandleError{err: "Channel announced on an unknown chain", action: Some(ErrorAction::IgnoreError)});
+ },
+ Err(ChainError::UnknownTx) => {
+ return Err(HandleError{err: "Channel announced without corresponding UTXO entry", action: Some(ErrorAction::IgnoreError)});
+ },