mod bitcoind; mod electrs; use crate::harness; use anyhow::{bail, Context, Result}; use async_trait::async_trait; use bitcoin_harness::{BitcoindRpcApi, Client}; use futures::Future; use get_port::get_port; use libp2p::core::Multiaddr; use libp2p::{PeerId, Swarm}; use monero_harness::{image, Monero}; use std::cmp::Ordering; use std::fmt; use std::path::{Path, PathBuf}; use std::sync::Arc; use std::time::Duration; use swap::asb::FixedRate; use swap::bitcoin::{CancelTimelock, PunishTimelock}; use swap::database::Database; use swap::env::{Config, GetConfig}; use swap::network::swarm; use swap::protocol::alice::{AliceState, Swap}; use swap::protocol::bob::BobState; use swap::protocol::{alice, bob}; use swap::seed::Seed; use swap::{bitcoin, env, monero}; use tempfile::tempdir; use testcontainers::clients::Cli; use testcontainers::{Container, Docker, RunArgs}; use tokio::sync::mpsc; use tokio::task::JoinHandle; use tokio::time::interval; use tracing_subscriber::util::SubscriberInitExt; use url::Url; use uuid::Uuid; const MONERO_WALLET_NAME_BOB: &str = "bob"; const MONERO_WALLET_NAME_ALICE: &str = "alice"; const BITCOIN_TEST_WALLET_NAME: &str = "testwallet"; #[derive(Debug, Clone)] pub struct StartingBalances { pub xmr: monero::Amount, pub btc: bitcoin::Amount, } struct BobParams { seed: Seed, db_path: PathBuf, swap_id: Uuid, bitcoin_wallet: Arc, monero_wallet: Arc, alice_address: Multiaddr, alice_peer_id: PeerId, env_config: Config, } impl BobParams { pub async fn builder(&self, event_loop_handle: bob::EventLoopHandle) -> Result { let receive_address = self.monero_wallet.get_main_address(); Ok(bob::Builder::new( Database::open(&self.db_path.clone().as_path()).unwrap(), self.swap_id, self.bitcoin_wallet.clone(), self.monero_wallet.clone(), self.env_config, event_loop_handle, receive_address, )) } pub fn new_eventloop(&self) -> Result<(bob::EventLoop, bob::EventLoopHandle)> { let mut swarm = swarm::new::(&self.seed)?; swarm.add_address(self.alice_peer_id, self.alice_address.clone()); bob::EventLoop::new(swarm, self.alice_peer_id, self.bitcoin_wallet.clone()) } } pub struct BobEventLoopJoinHandle(JoinHandle<()>); impl BobEventLoopJoinHandle { pub fn abort(&self) { self.0.abort() } } pub struct AliceEventLoopJoinHandle(JoinHandle<()>); pub struct TestContext { btc_amount: bitcoin::Amount, xmr_amount: monero::Amount, alice_starting_balances: StartingBalances, alice_bitcoin_wallet: Arc, alice_monero_wallet: Arc, alice_swap_handle: mpsc::Receiver, bob_params: BobParams, bob_starting_balances: StartingBalances, bob_bitcoin_wallet: Arc, bob_monero_wallet: Arc, } impl TestContext { pub async fn alice_next_swap(&mut self) -> alice::Swap { self.alice_swap_handle.recv().await.unwrap() } pub async fn bob_swap(&mut self) -> (bob::Swap, BobEventLoopJoinHandle) { let (event_loop, event_loop_handle) = self.bob_params.new_eventloop().unwrap(); let swap = self .bob_params .builder(event_loop_handle) .await .unwrap() .with_init_params(self.btc_amount) .build() .unwrap(); let join_handle = tokio::spawn(event_loop.run()); (swap, BobEventLoopJoinHandle(join_handle)) } pub async fn stop_and_resume_bob_from_db( &mut self, join_handle: BobEventLoopJoinHandle, ) -> (bob::Swap, BobEventLoopJoinHandle) { join_handle.abort(); let (event_loop, event_loop_handle) = self.bob_params.new_eventloop().unwrap(); let swap = self .bob_params .builder(event_loop_handle) .await .unwrap() .build() .unwrap(); let join_handle = tokio::spawn(event_loop.run()); (swap, BobEventLoopJoinHandle(join_handle)) } pub async fn assert_alice_redeemed(&mut self, state: AliceState) { assert!(matches!(state, AliceState::BtcRedeemed)); assert_eventual_balance( self.alice_bitcoin_wallet.as_ref(), Ordering::Equal, self.alice_redeemed_btc_balance(), ) .await .unwrap(); assert_eventual_balance( self.alice_monero_wallet.as_ref(), Ordering::Less, self.alice_redeemed_xmr_balance(), ) .await .unwrap(); } pub async fn assert_alice_refunded(&mut self, state: AliceState) { assert!(matches!(state, AliceState::XmrRefunded)); assert_eventual_balance( self.alice_bitcoin_wallet.as_ref(), Ordering::Equal, self.alice_refunded_btc_balance(), ) .await .unwrap(); // Alice pays fees - comparison does not take exact lock fee into account assert_eventual_balance( self.alice_monero_wallet.as_ref(), Ordering::Greater, self.alice_refunded_xmr_balance(), ) .await .unwrap(); } pub async fn assert_alice_punished(&self, state: AliceState) { assert!(matches!(state, AliceState::BtcPunished)); assert_eventual_balance( self.alice_bitcoin_wallet.as_ref(), Ordering::Equal, self.alice_punished_btc_balance(), ) .await .unwrap(); assert_eventual_balance( self.alice_monero_wallet.as_ref(), Ordering::Less, self.alice_punished_xmr_balance(), ) .await .unwrap(); } pub async fn assert_bob_redeemed(&self, state: BobState) { assert_eventual_balance( self.bob_bitcoin_wallet.as_ref(), Ordering::Equal, self.bob_redeemed_btc_balance(state).await.unwrap(), ) .await .unwrap(); // unload the generated wallet by opening the original wallet self.bob_monero_wallet.re_open().await.unwrap(); assert_eventual_balance( self.bob_monero_wallet.as_ref(), Ordering::Greater, self.bob_redeemed_xmr_balance(), ) .await .unwrap(); } pub async fn assert_bob_refunded(&self, state: BobState) { self.bob_bitcoin_wallet.sync().await.unwrap(); let lock_tx_id = if let BobState::BtcRefunded(state4) = state { state4.tx_lock_id() } else { panic!("Bob in not in btc refunded state: {:?}", state); }; let lock_tx_bitcoin_fee = self .bob_bitcoin_wallet .transaction_fee(lock_tx_id) .await .unwrap(); let btc_balance_after_swap = self.bob_bitcoin_wallet.balance().await.unwrap(); let alice_submitted_cancel = btc_balance_after_swap == self.bob_starting_balances.btc - lock_tx_bitcoin_fee - bitcoin::Amount::from_sat(bitcoin::TX_FEE); let bob_submitted_cancel = btc_balance_after_swap == self.bob_starting_balances.btc - lock_tx_bitcoin_fee - bitcoin::Amount::from_sat(2 * bitcoin::TX_FEE); // The cancel tx can be submitted by both Alice and Bob. // Since we cannot be sure who submitted it we have to assert accordingly assert!(alice_submitted_cancel || bob_submitted_cancel); assert_eventual_balance( self.bob_monero_wallet.as_ref(), Ordering::Equal, self.bob_refunded_xmr_balance(), ) .await .unwrap(); } pub async fn assert_bob_punished(&self, state: BobState) { assert_eventual_balance( self.bob_bitcoin_wallet.as_ref(), Ordering::Equal, self.bob_punished_btc_balance(state).await.unwrap(), ) .await .unwrap(); assert_eventual_balance( self.bob_monero_wallet.as_ref(), Ordering::Equal, self.bob_punished_xmr_balance(), ) .await .unwrap(); } fn alice_redeemed_xmr_balance(&self) -> monero::Amount { self.alice_starting_balances.xmr - self.xmr_amount } fn alice_redeemed_btc_balance(&self) -> bitcoin::Amount { self.alice_starting_balances.btc + self.btc_amount - bitcoin::Amount::from_sat(bitcoin::TX_FEE) } fn bob_redeemed_xmr_balance(&self) -> monero::Amount { self.bob_starting_balances.xmr } async fn bob_redeemed_btc_balance(&self, state: BobState) -> Result { self.bob_bitcoin_wallet.sync().await?; let lock_tx_id = if let BobState::XmrRedeemed { tx_lock_id } = state { tx_lock_id } else { bail!("Bob in not in xmr redeemed state: {:?}", state); }; let lock_tx_bitcoin_fee = self.bob_bitcoin_wallet.transaction_fee(lock_tx_id).await?; Ok(self.bob_starting_balances.btc - self.btc_amount - lock_tx_bitcoin_fee) } fn alice_refunded_xmr_balance(&self) -> monero::Amount { self.alice_starting_balances.xmr - self.xmr_amount } fn alice_refunded_btc_balance(&self) -> bitcoin::Amount { self.alice_starting_balances.btc } fn bob_refunded_xmr_balance(&self) -> monero::Amount { self.bob_starting_balances.xmr } fn alice_punished_xmr_balance(&self) -> monero::Amount { self.alice_starting_balances.xmr - self.xmr_amount } fn alice_punished_btc_balance(&self) -> bitcoin::Amount { self.alice_starting_balances.btc + self.btc_amount - bitcoin::Amount::from_sat(2 * bitcoin::TX_FEE) } fn bob_punished_xmr_balance(&self) -> monero::Amount { self.bob_starting_balances.xmr } async fn bob_punished_btc_balance(&self, state: BobState) -> Result { self.bob_bitcoin_wallet.sync().await?; let lock_tx_id = if let BobState::BtcPunished { tx_lock_id } = state { tx_lock_id } else { bail!("Bob in not in btc punished state: {:?}", state); }; let lock_tx_bitcoin_fee = self.bob_bitcoin_wallet.transaction_fee(lock_tx_id).await?; Ok(self.bob_starting_balances.btc - self.btc_amount - lock_tx_bitcoin_fee) } } async fn assert_eventual_balance( wallet: &impl Wallet, ordering: Ordering, expected: A, ) -> Result<()> { let ordering_str = match ordering { Ordering::Less => "less than", Ordering::Equal => "equal to", Ordering::Greater => "greater than", }; let mut current_balance = wallet.get_balance().await?; let assertion = async { while current_balance.partial_cmp(&expected).unwrap() != ordering { tokio::time::sleep(Duration::from_millis(500)).await; wallet.refresh().await?; current_balance = wallet.get_balance().await?; } tracing::debug!( "Assertion successful! Balance {} is {} {}", current_balance, ordering_str, expected ); Result::<_, anyhow::Error>::Ok(()) }; let timeout = Duration::from_secs(10); tokio::time::timeout(timeout, assertion) .await .with_context(|| { format!( "Expected balance to be {} {} after at most {}s but was {}", ordering_str, expected, timeout.as_secs(), current_balance ) })??; Ok(()) } #[async_trait] trait Wallet { type Amount; async fn refresh(&self) -> Result<()>; async fn get_balance(&self) -> Result; } #[async_trait] impl Wallet for monero::Wallet { type Amount = monero::Amount; async fn refresh(&self) -> Result<()> { self.refresh().await?; Ok(()) } async fn get_balance(&self) -> Result { self.get_balance().await } } #[async_trait] impl Wallet for bitcoin::Wallet { type Amount = bitcoin::Amount; async fn refresh(&self) -> Result<()> { self.sync().await } async fn get_balance(&self) -> Result { self.balance().await } } pub async fn setup_test(_config: C, testfn: T) where T: Fn(TestContext) -> F, F: Future>, C: GetConfig, { let cli = Cli::default(); let _guard = tracing_subscriber::fmt() .with_env_filter("warn,swap=debug,monero_harness=debug,monero_rpc=info,bitcoin_harness=info,testcontainers=info") .with_test_writer() .set_default(); let env_config = C::get_config(); let (monero, containers) = harness::init_containers(&cli).await; let btc_amount = bitcoin::Amount::from_sat(1_000_000); let xmr_amount = monero::Amount::from_monero(btc_amount.as_btc() / FixedRate::RATE).unwrap(); let alice_starting_balances = StartingBalances { xmr: xmr_amount * 10, btc: bitcoin::Amount::ZERO, }; let port = get_port().expect("Failed to find a free port"); let alice_listen_address: Multiaddr = format!("/ip4/127.0.0.1/tcp/{}", port) .parse() .expect("failed to parse Alice's address"); let electrs_rpc_port = containers .electrs .get_host_port(harness::electrs::RPC_PORT) .expect("Could not map electrs rpc port"); let alice_seed = Seed::random().unwrap(); let bob_seed = Seed::random().unwrap(); let (alice_bitcoin_wallet, alice_monero_wallet) = init_test_wallets( MONERO_WALLET_NAME_ALICE, containers.bitcoind_url.clone(), &monero, alice_starting_balances.clone(), tempdir().unwrap().path(), electrs_rpc_port, alice_seed, env_config, ) .await; let db_path = tempdir().unwrap(); let alice_db = Arc::new(Database::open(db_path.path()).unwrap()); let alice_seed = Seed::random().unwrap(); let bob_starting_balances = StartingBalances { xmr: monero::Amount::ZERO, btc: btc_amount * 10, }; let (bob_bitcoin_wallet, bob_monero_wallet) = init_test_wallets( MONERO_WALLET_NAME_BOB, containers.bitcoind_url, &monero, bob_starting_balances.clone(), tempdir().unwrap().path(), electrs_rpc_port, bob_seed, env_config, ) .await; let mut alice_swarm = swarm::new::(&alice_seed).unwrap(); Swarm::listen_on(&mut alice_swarm, alice_listen_address.clone()).unwrap(); let (alice_event_loop, alice_swap_handle) = alice::EventLoop::new( alice_swarm, env_config, alice_bitcoin_wallet.clone(), alice_monero_wallet.clone(), alice_db, FixedRate::default(), bitcoin::Amount::ONE_BTC, ) .unwrap(); let alice_peer_id = alice_event_loop.peer_id(); tokio::spawn(alice_event_loop.run()); let bob_params = BobParams { seed: Seed::random().unwrap(), db_path: tempdir().unwrap().path().to_path_buf(), swap_id: Uuid::new_v4(), bitcoin_wallet: bob_bitcoin_wallet.clone(), monero_wallet: bob_monero_wallet.clone(), alice_address: alice_listen_address, alice_peer_id, env_config, }; let test = TestContext { btc_amount, xmr_amount, alice_starting_balances, alice_bitcoin_wallet, alice_monero_wallet, alice_swap_handle, bob_params, bob_starting_balances, bob_bitcoin_wallet, bob_monero_wallet, }; testfn(test).await.unwrap() } fn random_prefix() -> String { use rand::distributions::Alphanumeric; use rand::{thread_rng, Rng}; use std::iter; const LEN: usize = 8; let mut rng = thread_rng(); let chars: String = iter::repeat(()) .map(|()| rng.sample(Alphanumeric)) .map(char::from) .take(LEN) .collect(); chars } async fn init_containers(cli: &Cli) -> (Monero, Containers<'_>) { let prefix = random_prefix(); let bitcoind_name = format!("{}_{}", prefix, "bitcoind"); let (bitcoind, bitcoind_url) = init_bitcoind_container(&cli, prefix.clone(), bitcoind_name.clone(), prefix.clone()) .await .expect("could not init bitcoind"); let electrs = init_electrs_container(&cli, prefix.clone(), bitcoind_name, prefix) .await .expect("could not init electrs"); let (monero, monerods) = init_monero_container(&cli).await; (monero, Containers { bitcoind_url, bitcoind, monerods, electrs, }) } async fn init_bitcoind_container( cli: &Cli, volume: String, name: String, network: String, ) -> Result<(Container<'_, Cli, bitcoind::Bitcoind>, Url)> { let image = bitcoind::Bitcoind::default().with_volume(volume); let run_args = RunArgs::default().with_name(name).with_network(network); let docker = cli.run_with_args(image, run_args); let a = docker .get_host_port(harness::bitcoind::RPC_PORT) .context("Could not map bitcoind rpc port")?; let bitcoind_url = { let input = format!( "http://{}:{}@localhost:{}", bitcoind::RPC_USER, bitcoind::RPC_PASSWORD, a ); Url::parse(&input).unwrap() }; init_bitcoind(bitcoind_url.clone(), 5).await?; Ok((docker, bitcoind_url.clone())) } pub async fn init_electrs_container( cli: &Cli, volume: String, bitcoind_container_name: String, network: String, ) -> Result> { let bitcoind_rpc_addr = format!( "{}:{}", bitcoind_container_name, harness::bitcoind::RPC_PORT ); let image = electrs::Electrs::default() .with_volume(volume) .with_daemon_rpc_addr(bitcoind_rpc_addr) .with_tag("latest"); let run_args = RunArgs::default().with_network(network); let docker = cli.run_with_args(image, run_args); Ok(docker) } async fn mine(bitcoind_client: Client, reward_address: bitcoin::Address) -> Result<()> { loop { tokio::time::sleep(Duration::from_secs(1)).await; bitcoind_client .generatetoaddress(1, reward_address.clone(), None) .await?; } } async fn init_bitcoind(node_url: Url, spendable_quantity: u32) -> Result { let bitcoind_client = Client::new(node_url.clone()); bitcoind_client .createwallet(BITCOIN_TEST_WALLET_NAME, None, None, None, None) .await?; let reward_address = bitcoind_client .with_wallet(BITCOIN_TEST_WALLET_NAME)? .getnewaddress(None, None) .await?; bitcoind_client .generatetoaddress(101 + spendable_quantity, reward_address.clone(), None) .await?; let _ = tokio::spawn(mine(bitcoind_client.clone(), reward_address)); Ok(bitcoind_client) } /// Send Bitcoin to the specified address, limited to the spendable bitcoin /// quantity. pub async fn mint(node_url: Url, address: bitcoin::Address, amount: bitcoin::Amount) -> Result<()> { let bitcoind_client = Client::new(node_url.clone()); bitcoind_client .send_to_address(BITCOIN_TEST_WALLET_NAME, address.clone(), amount) .await?; // Confirm the transaction let reward_address = bitcoind_client .with_wallet(BITCOIN_TEST_WALLET_NAME)? .getnewaddress(None, None) .await?; bitcoind_client .generatetoaddress(1, reward_address, None) .await?; Ok(()) } async fn init_monero_container( cli: &Cli, ) -> ( Monero, Vec>, ) { let (monero, monerods) = Monero::new(&cli, vec![ MONERO_WALLET_NAME_ALICE.to_string(), MONERO_WALLET_NAME_BOB.to_string(), ]) .await .unwrap(); (monero, monerods) } #[allow(clippy::too_many_arguments)] async fn init_test_wallets( name: &str, bitcoind_url: Url, monero: &Monero, starting_balances: StartingBalances, datadir: &Path, electrum_rpc_port: u16, seed: Seed, env_config: Config, ) -> (Arc, Arc) { monero .init(vec![(name, starting_balances.xmr.as_piconero())]) .await .unwrap(); let xmr_wallet = swap::monero::Wallet::connect( monero.wallet(name).unwrap().client(), name.to_string(), env_config, ) .await .unwrap(); let electrum_rpc_url = { let input = format!("tcp://@localhost:{}", electrum_rpc_port); Url::parse(&input).unwrap() }; let btc_wallet = swap::bitcoin::Wallet::new( electrum_rpc_url, datadir, seed.derive_extended_private_key(env_config.bitcoin_network) .expect("Could not create extended private key from seed"), env_config, ) .await .expect("could not init btc wallet"); if starting_balances.btc != bitcoin::Amount::ZERO { mint( bitcoind_url, btc_wallet.new_address().await.unwrap(), starting_balances.btc, ) .await .expect("could not mint btc starting balance"); let mut interval = interval(Duration::from_secs(1u64)); let mut retries = 0u8; let max_retries = 30u8; loop { retries += 1; btc_wallet.sync().await.unwrap(); let btc_balance = btc_wallet.balance().await.unwrap(); if btc_balance == starting_balances.btc { break; } else if retries == max_retries { panic!( "Bitcoin wallet initialization failed, reached max retries upon balance sync" ) } interval.tick().await; } } (Arc::new(btc_wallet), Arc::new(xmr_wallet)) } // This is just to keep the containers alive #[allow(dead_code)] struct Containers<'a> { bitcoind_url: Url, bitcoind: Container<'a, Cli, bitcoind::Bitcoind>, monerods: Vec>, electrs: Container<'a, Cli, electrs::Electrs>, } pub mod alice_run_until { use swap::protocol::alice::AliceState; pub fn is_xmr_lock_transaction_sent(state: &AliceState) -> bool { matches!(state, AliceState::XmrLockTransactionSent { .. }) } pub fn is_encsig_learned(state: &AliceState) -> bool { matches!(state, AliceState::EncSigLearned { .. }) } } pub mod bob_run_until { use swap::protocol::bob::BobState; pub fn is_btc_locked(state: &BobState) -> bool { matches!(state, BobState::BtcLocked(..)) } pub fn is_lock_proof_received(state: &BobState) -> bool { matches!(state, BobState::XmrLockProofReceived { .. }) } pub fn is_xmr_locked(state: &BobState) -> bool { matches!(state, BobState::XmrLocked(..)) } pub fn is_encsig_sent(state: &BobState) -> bool { matches!(state, BobState::EncSigSent(..)) } } pub struct SlowCancelConfig; impl GetConfig for SlowCancelConfig { fn get_config() -> Config { Config { bitcoin_cancel_timelock: CancelTimelock::new(180), ..env::Regtest::get_config() } } } pub struct FastCancelConfig; impl GetConfig for FastCancelConfig { fn get_config() -> Config { Config { bitcoin_cancel_timelock: CancelTimelock::new(10), ..env::Regtest::get_config() } } } pub struct FastPunishConfig; impl GetConfig for FastPunishConfig { fn get_config() -> Config { Config { bitcoin_cancel_timelock: CancelTimelock::new(10), bitcoin_punish_timelock: PunishTimelock::new(1), ..env::Regtest::get_config() } } }