Merge #1259

1259: Allow asb to set a bitcoin address that is controlled by the asb itself to redeem/punish Bitcoin to r=binarybaron a=binarybaron



Co-authored-by: binarybaron <86064887+binarybaron@users.noreply.github.com>

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Update `bdk` library to latest version. This introduces an incompatability with previous versions due to different formats being used to exchange Bitcoin transactions
 - Changed ASB to quote on Monero unlocked balance instead of total balance
+- Allow `asb` to set a bitcoin address that is controlled by the asb itself to redeem/punish bitcoin to
 
 ### Added
 

swap/src/asb/config.rs

@@ -216,6 +216,7 @@ pub struct Maker {
     pub max_buy_btc: bitcoin::Amount,
     pub ask_spread: Decimal,
     pub price_ticker_ws_url: Url,
+    pub external_bitcoin_redeem_address: Option<bitcoin::Address>,
 }
 
 impl Default for TorConf {
@@ -384,6 +385,7 @@ pub fn query_user_for_initial_config(testnet: bool) -> Result<Config> {
             max_buy_btc: max_buy,
             ask_spread,
             price_ticker_ws_url: defaults.price_ticker_ws_url,
+            external_bitcoin_redeem_address: None,
         },
     })
 }
@@ -429,6 +431,7 @@ mod tests {
                 max_buy_btc: bitcoin::Amount::from_btc(DEFAULT_MAX_BUY_AMOUNT).unwrap(),
                 ask_spread: Decimal::from_f64(DEFAULT_SPREAD).unwrap(),
                 price_ticker_ws_url: defaults.price_ticker_ws_url,
+                external_bitcoin_redeem_address: None,
             },
         };
 
@@ -472,6 +475,7 @@ mod tests {
                 max_buy_btc: bitcoin::Amount::from_btc(DEFAULT_MAX_BUY_AMOUNT).unwrap(),
                 ask_spread: Decimal::from_f64(DEFAULT_SPREAD).unwrap(),
                 price_ticker_ws_url: defaults.price_ticker_ws_url,
+                external_bitcoin_redeem_address: None,
             },
         };
 
@@ -525,6 +529,7 @@ mod tests {
                 max_buy_btc: bitcoin::Amount::from_btc(DEFAULT_MAX_BUY_AMOUNT).unwrap(),
                 ask_spread: Decimal::from_f64(DEFAULT_SPREAD).unwrap(),
                 price_ticker_ws_url: defaults.price_ticker_ws_url,
+                external_bitcoin_redeem_address: None,
             },
         };
 

swap/src/asb/event_loop.rs

@@ -44,6 +44,7 @@ where
     latest_rate: LR,
     min_buy: bitcoin::Amount,
     max_buy: bitcoin::Amount,
+    external_redeem_address: Option<bitcoin::Address>,
 
     swap_sender: mpsc::Sender<Swap>,
 
@@ -76,6 +77,7 @@ where
         latest_rate: LR,
         min_buy: bitcoin::Amount,
         max_buy: bitcoin::Amount,
+        external_redeem_address: Option<bitcoin::Address>,
     ) -> Result<(Self, mpsc::Receiver<Swap>)> {
         let swap_channel = MpscChannels::default();
 
@@ -89,6 +91,7 @@ where
             swap_sender: swap_channel.sender,
             min_buy,
             max_buy,
+            external_redeem_address,
             recv_encrypted_signature: Default::default(),
             inflight_encrypted_signatures: Default::default(),
             send_transfer_proof: Default::default(),
@@ -165,7 +168,7 @@ where
                                 }
                             };
 
-                            let wallet_snapshot = match WalletSnapshot::capture(&self.bitcoin_wallet, &self.monero_wallet, btc).await {
+                            let wallet_snapshot = match WalletSnapshot::capture(&self.bitcoin_wallet, &self.monero_wallet, &self.external_redeem_address, btc).await {
                                 Ok(wallet_snapshot) => wallet_snapshot,
                                 Err(error) => {
                                     tracing::error!("Swap request will be ignored because we were unable to create wallet snapshot for swap: {:#}", error);

swap/src/bin/asb.rs

@@ -188,6 +188,7 @@ async fn main() -> Result<()> {
                 kraken_rate.clone(),
                 config.maker.min_buy_btc,
                 config.maker.max_buy_btc,
+                config.maker.external_bitcoin_redeem_address,
             )
             .unwrap();
 

swap/src/network/swap_setup/alice.rs

@@ -59,11 +59,17 @@ impl WalletSnapshot {
     pub async fn capture(
         bitcoin_wallet: &bitcoin::Wallet,
         monero_wallet: &monero::Wallet,
+        external_redeem_address: &Option<bitcoin::Address>,
         transfer_amount: bitcoin::Amount,
     ) -> Result<Self> {
         let balance = monero_wallet.get_balance().await?;
-        let redeem_address = bitcoin_wallet.new_address().await?;
-        let punish_address = bitcoin_wallet.new_address().await?;
+        let redeem_address = external_redeem_address
+            .clone()
+            .unwrap_or(bitcoin_wallet.new_address().await?);
+        let punish_address = external_redeem_address
+            .clone()
+            .unwrap_or(bitcoin_wallet.new_address().await?);
+
         let redeem_fee = bitcoin_wallet
             .estimate_fee(bitcoin::TxRedeem::weight(), transfer_amount)
             .await?;

swap/tests/harness/mod.rs

@@ -259,6 +259,7 @@ async fn start_alice(
         FixedRate::default(),
         min_buy,
         max_buy,
+        None,
     )
     .unwrap();