use bitcoin_harness::Bitcoind; use futures::future::try_join; use libp2p::Multiaddr; use monero_harness::{image, Monero}; use rand::rngs::OsRng; use std::{convert::TryInto, sync::Arc}; use swap::{ alice, alice::swap::AliceState, bitcoin, bob, bob::swap::BobState, monero, network::transport::build, storage::Database, SwapAmounts, PUNISH_TIMELOCK, REFUND_TIMELOCK, }; use tempfile::{tempdir, TempDir}; use testcontainers::{clients::Cli, Container}; use uuid::Uuid; use xmr_btc::cross_curve_dleq; fn setup_tracing() { use tracing_subscriber::util::SubscriberInitExt as _; let _guard = tracing_subscriber::fmt() .with_env_filter("swap=trace,xmr_btc=trace") .with_ansi(false) .set_default(); } // This is just to keep the containers alive #[allow(dead_code)] struct Containers<'a> { bitcoind: Bitcoind<'a>, monerods: Vec>, } /// Returns Alice's and Bob's wallets, in this order async fn setup_wallets( cli: &Cli, _init_btc_alice: bitcoin::Amount, init_xmr_alice: monero::Amount, init_btc_bob: bitcoin::Amount, init_xmr_bob: monero::Amount, ) -> ( bitcoin::Wallet, monero::Wallet, bitcoin::Wallet, monero::Wallet, Containers<'_>, ) { let bitcoind = Bitcoind::new(&cli, "0.19.1").unwrap(); let _ = bitcoind.init(5).await; let alice_btc_wallet = swap::bitcoin::Wallet::new("alice", bitcoind.node_url.clone()) .await .unwrap(); let bob_btc_wallet = swap::bitcoin::Wallet::new("bob", bitcoind.node_url.clone()) .await .unwrap(); bitcoind .mint(bob_btc_wallet.0.new_address().await.unwrap(), init_btc_bob) .await .unwrap(); let (monero, monerods) = Monero::new(&cli, None, vec!["alice".to_string(), "bob".to_string()]) .await .unwrap(); monero .init(vec![ ("alice", init_xmr_alice.as_piconero()), ("bob", init_xmr_bob.as_piconero()), ]) .await .unwrap(); let alice_xmr_wallet = swap::monero::Wallet(monero.wallet("alice").unwrap().client()); let bob_xmr_wallet = swap::monero::Wallet(monero.wallet("bob").unwrap().client()); ( alice_btc_wallet, alice_xmr_wallet, bob_btc_wallet, bob_xmr_wallet, Containers { bitcoind, monerods }, ) } #[tokio::test] async fn given_bob_restarts_after_encsig_is_sent_resume_swap() { setup_tracing(); let alice_multiaddr: Multiaddr = "/ip4/127.0.0.1/tcp/9876" .parse() .expect("failed to parse Alice's address"); let btc_to_swap = bitcoin::Amount::from_sat(1_000_000); let init_btc_alice = bitcoin::Amount::ZERO; let init_btc_bob = btc_to_swap * 10; let xmr_to_swap = monero::Amount::from_piconero(1_000_000_000_000); let init_xmr_alice = xmr_to_swap * 10; let init_xmr_bob = monero::Amount::ZERO; let cli = Cli::default(); let (alice_btc_wallet, alice_xmr_wallet, bob_btc_wallet, bob_xmr_wallet, _containers) = setup_wallets( &cli, init_btc_alice, init_xmr_alice, init_btc_bob, init_xmr_bob, ) .await; let alice_btc_wallet = Arc::new(alice_btc_wallet); let alice_xmr_wallet = Arc::new(alice_xmr_wallet); let bob_btc_wallet = Arc::new(bob_btc_wallet); let bob_xmr_wallet = Arc::new(bob_xmr_wallet); let amounts = SwapAmounts { btc: btc_to_swap, xmr: xmr_to_swap, }; let alice_db_dir = TempDir::new().unwrap(); let alice_swap = async { let rng = &mut OsRng; let behaviour = alice::Behaviour::default(); let transport = build(behaviour.identity()).unwrap(); let start_state = { let a = bitcoin::SecretKey::new_random(rng); let s_a = cross_curve_dleq::Scalar::random(rng); let v_a = xmr_btc::monero::PrivateViewKey::new_random(rng); AliceState::Started { amounts, a, s_a, v_a, } }; let config = xmr_btc::config::Config::regtest(); let swap_id = Uuid::new_v4(); let swarm = alice::new_swarm(alice_multiaddr.clone(), transport, behaviour).unwrap(); let db = Database::open(alice_db_dir.path()).unwrap(); alice::swap::swap( start_state, swarm, alice_btc_wallet.clone(), alice_xmr_wallet.clone(), config, swap_id, db, ) .await }; let bob_swap = { let rng = &mut OsRng; let bob_db_dir = tempdir().unwrap(); let bob_db = Database::open(bob_db_dir.path()).unwrap(); let bob_behaviour = bob::Behaviour::default(); let bob_transport = build(bob_behaviour.identity()).unwrap(); let refund_address = bob_btc_wallet.new_address().await.unwrap(); let state0 = xmr_btc::bob::State0::new( rng, btc_to_swap, xmr_to_swap, REFUND_TIMELOCK, PUNISH_TIMELOCK, refund_address, ); let start_state = BobState::Started { state0, amounts, addr: alice_multiaddr.clone(), }; let bob_swarm = bob::new_swarm(bob_transport, bob_behaviour).unwrap(); let swap_id = Uuid::new_v4(); // Bob reaches encsig_learned bob::swap::run_until( start_state, |state| matches!(state, BobState::EncSigSent { .. }), bob_swarm, bob_db, bob_btc_wallet.clone(), bob_xmr_wallet.clone(), OsRng, swap_id, ) .await .unwrap(); let bob_behaviour = bob::Behaviour::default(); let bob_transport = build(bob_behaviour.identity()).unwrap(); let bob_swarm = bob::new_swarm(bob_transport, bob_behaviour).unwrap(); let bob_db = Database::open(bob_db_dir.path()).unwrap(); // Load the latest state from the db let latest_state = bob_db.get_state(swap_id).unwrap(); let state = if let swap::state::Swap::Bob(state) = latest_state { state } else { panic!("Bob state expected") }; bob::swap::swap( state.into(), bob_swarm, bob_db, bob_btc_wallet.clone(), bob_xmr_wallet.clone(), OsRng, swap_id, ) }; try_join(alice_swap, bob_swap).await.unwrap(); let btc_alice_final = alice_btc_wallet.balance().await.unwrap(); let xmr_alice_final = alice_xmr_wallet.get_balance().await.unwrap(); let btc_bob_final = bob_btc_wallet.balance().await.unwrap(); bob_xmr_wallet.0.refresh().await.unwrap(); let xmr_bob_final = bob_xmr_wallet.get_balance().await.unwrap(); assert_eq!( btc_alice_final, init_btc_alice + btc_to_swap - bitcoin::Amount::from_sat(bitcoin::TX_FEE) ); assert!(btc_bob_final <= init_btc_bob - btc_to_swap); assert!(xmr_alice_final <= init_xmr_alice - xmr_to_swap); assert_eq!(xmr_bob_final, init_xmr_bob + xmr_to_swap); } #[tokio::test] async fn given_alice_restarts_after_xmr_is_locked_refund_swap() { setup_tracing(); let alice_multiaddr: Multiaddr = "/ip4/127.0.0.1/tcp/9876" .parse() .expect("failed to parse Alice's address"); let btc_to_swap = bitcoin::Amount::from_sat(1_000_000); let init_btc_alice = bitcoin::Amount::ZERO; let init_btc_bob = btc_to_swap * 10; let xmr_to_swap = monero::Amount::from_piconero(1_000_000_000_000); let init_xmr_alice = xmr_to_swap * 10; let init_xmr_bob = monero::Amount::ZERO; let cli = Cli::default(); let (alice_btc_wallet, alice_xmr_wallet, bob_btc_wallet, bob_xmr_wallet, _containers) = setup_wallets( &cli, init_btc_alice, init_xmr_alice, init_btc_bob, init_xmr_bob, ) .await; let alice_btc_wallet = Arc::new(alice_btc_wallet); let alice_xmr_wallet = Arc::new(alice_xmr_wallet); let bob_btc_wallet = Arc::new(bob_btc_wallet); let bob_xmr_wallet = Arc::new(bob_xmr_wallet); let amounts = SwapAmounts { btc: btc_to_swap, xmr: xmr_to_swap, }; let alice_db_dir = TempDir::new().unwrap(); let alice_swap = async { let rng = &mut OsRng; let behaviour = alice::Behaviour::default(); let transport = build(behaviour.identity()).unwrap(); let start_state = { let a = bitcoin::SecretKey::new_random(rng); let s_a = cross_curve_dleq::Scalar::random(rng); let v_a = xmr_btc::monero::PrivateViewKey::new_random(rng); AliceState::Started { amounts, a, s_a, v_a, } }; let config = xmr_btc::config::Config::regtest(); let swap_id = Uuid::new_v4(); let swarm = alice::new_swarm(alice_multiaddr.clone(), transport, behaviour).unwrap(); let db = Database::open(alice_db_dir.path()).unwrap(); // Alice reaches encsig_learned alice::swap::run_until( start_state, |state| matches!(state, AliceState::XmrLocked { .. }), swarm, alice_btc_wallet.clone(), alice_xmr_wallet.clone(), config, swap_id, db, ) .await .unwrap(); let behaviour = alice::Behaviour::default(); let transport = build(behaviour.identity()).unwrap(); let swarm = alice::new_swarm(alice_multiaddr.clone(), transport, behaviour).unwrap(); let db = Database::open(alice_db_dir.path()).unwrap(); // Load the latest state from the db let latest_state = db.get_state(swap_id).unwrap(); let latest_state = latest_state.try_into().unwrap(); // Finish the swap alice::swap::swap( latest_state, swarm, alice_btc_wallet.clone(), alice_xmr_wallet.clone(), config, swap_id, db, ) .await }; let bob_swap = { let rng = &mut OsRng; let bob_db_dir = tempdir().unwrap(); let bob_db = Database::open(bob_db_dir.path()).unwrap(); let bob_behaviour = bob::Behaviour::default(); let bob_transport = build(bob_behaviour.identity()).unwrap(); let refund_address = bob_btc_wallet.new_address().await.unwrap(); let state0 = xmr_btc::bob::State0::new( rng, btc_to_swap, xmr_to_swap, REFUND_TIMELOCK, PUNISH_TIMELOCK, refund_address, ); let bob_state = BobState::Started { state0, amounts, addr: alice_multiaddr.clone(), }; let bob_swarm = bob::new_swarm(bob_transport, bob_behaviour).unwrap(); bob::swap::swap( bob_state, bob_swarm, bob_db, bob_btc_wallet.clone(), bob_xmr_wallet.clone(), OsRng, Uuid::new_v4(), ) }; try_join(alice_swap, bob_swap).await.unwrap(); let btc_alice_final = alice_btc_wallet.balance().await.unwrap(); let xmr_alice_final = alice_xmr_wallet.get_balance().await.unwrap(); let btc_bob_final = bob_btc_wallet.balance().await.unwrap(); bob_xmr_wallet.0.refresh().await.unwrap(); let xmr_bob_final = bob_xmr_wallet.get_balance().await.unwrap(); // Alice's BTC balance did not change assert_eq!(btc_alice_final, init_btc_alice); // Bob wasted some BTC fees assert_eq!( btc_bob_final, init_btc_bob - bitcoin::Amount::from_sat(bitcoin::TX_FEE) ); // Alice wasted some XMR fees assert_eq!(init_xmr_alice - xmr_alice_final, monero::Amount::ZERO); // Bob's ZMR balance did not change assert_eq!(xmr_bob_final, init_xmr_bob); }