Verify gossip using our RpcClient and the new LDK verification impl
[ldk-sample] / src / bitcoind_client.rs
index 228f27a2318406b1a2380b73ba78669eb2bd55b8..9f28015cf5ed0326190ac88b79b67f736c8de4a0 100644 (file)
@@ -1,13 +1,19 @@
 use crate::convert::{
-       BlockchainInfo, FeeResponse, FundedTx, MempoolMinFeeResponse, NewAddress, RawTx, SignedTx,
+       BlockchainInfo, FeeResponse, FundedTx, ListUnspentResponse, MempoolMinFeeResponse, NewAddress,
+       RawTx, SignedTx,
 };
 use crate::disk::FilesystemLogger;
+use crate::hex_utils;
 use base64;
+use bitcoin::blockdata::constants::WITNESS_SCALE_FACTOR;
 use bitcoin::blockdata::transaction::Transaction;
-use bitcoin::consensus::encode;
+use bitcoin::consensus::{encode, Decodable, Encodable};
 use bitcoin::hash_types::{BlockHash, Txid};
-use bitcoin::util::address::Address;
+use bitcoin::hashes::Hash;
+use bitcoin::util::address::{Address, Payload, WitnessVersion};
+use bitcoin::{OutPoint, Script, TxOut, WPubkeyHash, XOnlyPublicKey};
 use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
+use lightning::events::bump_transaction::{Utxo, WalletSource};
 use lightning::log_error;
 use lightning::routing::utxo::{UtxoLookup, UtxoResult};
 use lightning::util::logger::Logger;
@@ -22,24 +28,16 @@ use std::sync::Arc;
 use std::time::Duration;
 
 pub struct BitcoindClient {
-       bitcoind_rpc_client: Arc<RpcClient>,
+       pub(crate) bitcoind_rpc_client: Arc<RpcClient>,
        host: String,
        port: u16,
        rpc_user: String,
        rpc_password: String,
-       fees: Arc<HashMap<Target, AtomicU32>>,
+       fees: Arc<HashMap<ConfirmationTarget, AtomicU32>>,
        handle: tokio::runtime::Handle,
        logger: Arc<FilesystemLogger>,
 }
 
-#[derive(Clone, Eq, Hash, PartialEq)]
-pub enum Target {
-       MempoolMinimum,
-       Background,
-       Normal,
-       HighPriority,
-}
-
 impl BlockSource for BitcoindClient {
        fn get_header<'a>(
                &'a self, header_hash: &'a BlockHash, height_hint: Option<u32>,
@@ -77,11 +75,11 @@ impl BitcoindClient {
                                std::io::Error::new(std::io::ErrorKind::PermissionDenied,
                                "Failed to make initial call to bitcoind - please check your RPC user/password and access settings")
                        })?;
-               let mut fees: HashMap<Target, AtomicU32> = HashMap::new();
-               fees.insert(Target::MempoolMinimum, AtomicU32::new(MIN_FEERATE));
-               fees.insert(Target::Background, AtomicU32::new(MIN_FEERATE));
-               fees.insert(Target::Normal, AtomicU32::new(2000));
-               fees.insert(Target::HighPriority, AtomicU32::new(5000));
+               let mut fees: HashMap<ConfirmationTarget, AtomicU32> = HashMap::new();
+               fees.insert(ConfirmationTarget::MempoolMinimum, AtomicU32::new(MIN_FEERATE));
+               fees.insert(ConfirmationTarget::Background, AtomicU32::new(MIN_FEERATE));
+               fees.insert(ConfirmationTarget::Normal, AtomicU32::new(2000));
+               fees.insert(ConfirmationTarget::HighPriority, AtomicU32::new(5000));
                let client = Self {
                        bitcoind_rpc_client: Arc::new(bitcoind_rpc_client),
                        host,
@@ -101,7 +99,7 @@ impl BitcoindClient {
        }
 
        fn poll_for_fee_estimates(
-               fees: Arc<HashMap<Target, AtomicU32>>, rpc_client: Arc<RpcClient>,
+               fees: Arc<HashMap<ConfirmationTarget, AtomicU32>>, rpc_client: Arc<RpcClient>,
                handle: tokio::runtime::Handle,
        ) {
                handle.spawn(async move {
@@ -165,14 +163,16 @@ impl BitcoindClient {
                                        }
                                };
 
-                               fees.get(&Target::MempoolMinimum)
+                               fees.get(&ConfirmationTarget::MempoolMinimum)
                                        .unwrap()
                                        .store(mempoolmin_estimate, Ordering::Release);
-                               fees.get(&Target::Background)
+                               fees.get(&ConfirmationTarget::Background)
                                        .unwrap()
                                        .store(background_estimate, Ordering::Release);
-                               fees.get(&Target::Normal).unwrap().store(normal_estimate, Ordering::Release);
-                               fees.get(&Target::HighPriority)
+                               fees.get(&ConfirmationTarget::Normal)
+                                       .unwrap()
+                                       .store(normal_estimate, Ordering::Release);
+                               fees.get(&ConfirmationTarget::HighPriority)
                                        .unwrap()
                                        .store(high_prio_estimate, Ordering::Release);
                                tokio::time::sleep(Duration::from_secs(60)).await;
@@ -250,24 +250,18 @@ impl BitcoindClient {
                        .await
                        .unwrap()
        }
+
+       pub async fn list_unspent(&self) -> ListUnspentResponse {
+               self.bitcoind_rpc_client
+                       .call_method::<ListUnspentResponse>("listunspent", &vec![])
+                       .await
+                       .unwrap()
+       }
 }
 
 impl FeeEstimator for BitcoindClient {
        fn get_est_sat_per_1000_weight(&self, confirmation_target: ConfirmationTarget) -> u32 {
-               match confirmation_target {
-                       ConfirmationTarget::MempoolMinimum => {
-                               self.fees.get(&Target::MempoolMinimum).unwrap().load(Ordering::Acquire)
-                       }
-                       ConfirmationTarget::Background => {
-                               self.fees.get(&Target::Background).unwrap().load(Ordering::Acquire)
-                       }
-                       ConfirmationTarget::Normal => {
-                               self.fees.get(&Target::Normal).unwrap().load(Ordering::Acquire)
-                       }
-                       ConfirmationTarget::HighPriority => {
-                               self.fees.get(&Target::HighPriority).unwrap().load(Ordering::Acquire)
-                       }
-               }
+               self.fees.get(&confirmation_target).unwrap().load(Ordering::Acquire)
        }
 }
 
@@ -308,3 +302,55 @@ impl UtxoLookup for BitcoindClient {
                todo!();
        }
 }
+
+impl WalletSource for BitcoindClient {
+       fn list_confirmed_utxos(&self) -> Result<Vec<Utxo>, ()> {
+               let utxos = tokio::task::block_in_place(move || {
+                       self.handle.block_on(async move { self.list_unspent().await }).0
+               });
+               Ok(utxos
+                       .into_iter()
+                       .filter_map(|utxo| {
+                               let outpoint = OutPoint { txid: utxo.txid, vout: utxo.vout };
+                               match utxo.address.payload {
+                                       Payload::WitnessProgram { version, ref program } => match version {
+                                               WitnessVersion::V0 => WPubkeyHash::from_slice(program)
+                                                       .map(|wpkh| Utxo::new_v0_p2wpkh(outpoint, utxo.amount, &wpkh))
+                                                       .ok(),
+                                               // TODO: Add `Utxo::new_v1_p2tr` upstream.
+                                               WitnessVersion::V1 => XOnlyPublicKey::from_slice(program)
+                                                       .map(|_| Utxo {
+                                                               outpoint,
+                                                               output: TxOut {
+                                                                       value: utxo.amount,
+                                                                       script_pubkey: Script::new_witness_program(version, program),
+                                                               },
+                                                               satisfaction_weight: 1 /* empty script_sig */ * WITNESS_SCALE_FACTOR as u64 +
+                                                                       1 /* witness items */ + 1 /* schnorr sig len */ + 64, /* schnorr sig */
+                                                       })
+                                                       .ok(),
+                                               _ => None,
+                                       },
+                                       _ => None,
+                               }
+                       })
+                       .collect())
+       }
+
+       fn get_change_script(&self) -> Result<Script, ()> {
+               tokio::task::block_in_place(move || {
+                       Ok(self.handle.block_on(async move { self.get_new_address().await.script_pubkey() }))
+               })
+       }
+
+       fn sign_tx(&self, tx: Transaction) -> Result<Transaction, ()> {
+               let mut tx_bytes = Vec::new();
+               let _ = tx.consensus_encode(&mut tx_bytes).map_err(|_| ());
+               let tx_hex = hex_utils::hex_str(&tx_bytes);
+               let signed_tx = tokio::task::block_in_place(move || {
+                       self.handle.block_on(async move { self.sign_raw_transaction_with_wallet(tx_hex).await })
+               });
+               let signed_tx_bytes = hex_utils::to_vec(&signed_tx.hex).ok_or(())?;
+               Transaction::consensus_decode(&mut signed_tx_bytes.as_slice()).map_err(|_| ())
+       }
+}