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Add recovery function for Alice

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This commit is contained in:
Daniel Karzel 2020-12-14 17:24:23 +11:00 committed by Franck Royer
parent 4b00141c29
commit 4143394767
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GPG Key ID: A82ED75A8DFC50A4
9 changed files with 593 additions and 716 deletions
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64
swap/src/alice/swap.rs
View File

@ -112,12 +112,26 @@ impl From<&AliceState> for state::Alice {
match alice_state {
AliceState::Started {
amounts,
state0: State0 { a, s_a, v_a, .. },
state0:
State0 {
a,
s_a,
v_a,
refund_timelock,
punish_timelock,
redeem_address,
punish_address,
..
},
} => Alice::Started {
amounts: *amounts,
a: a.clone(),
s_a: *s_a,
v_a: *v_a,
refund_timelock: *refund_timelock,
punish_timelock: *punish_timelock,
redeem_address: redeem_address.clone(),
punish_address: punish_address.clone(),
},
AliceState::Negotiated { state3, .. } => Alice::Negotiated(state3.clone()),
AliceState::BtcLocked { state3, .. } => Alice::BtcLocked(state3.clone()),
@ -150,7 +164,29 @@ impl TryFrom<state::Swap> for AliceState {
use AliceState::*;
if let Swap::Alice(state) = db_state {
let alice_state = match state {
Alice::Started { .. } => todo!(),
Alice::Started {
amounts,
a,
s_a,
v_a,
refund_timelock,
punish_timelock,
redeem_address,
punish_address,
} => Started {
amounts,
state0: State0 {
a,
s_a,
v_a,
btc: amounts.btc,
xmr: amounts.xmr,
refund_timelock,
punish_timelock,
redeem_address,
punish_address,
},
},
Alice::Negotiated(state3) => Negotiated {
channel: None,
amounts: SwapAmounts {
@ -243,6 +279,29 @@ pub async fn swap(
.await
}
pub async fn recover(
event_loop_handle: EventLoopHandle,
bitcoin_wallet: Arc<crate::bitcoin::Wallet>,
monero_wallet: Arc<crate::monero::Wallet>,
config: Config,
swap_id: Uuid,
db: Database,
) -> Result<AliceState> {
let db_swap = db.get_state(swap_id)?;
let start_state = AliceState::try_from(db_swap)?;
let (state, _) = swap(
start_state,
event_loop_handle,
bitcoin_wallet,
monero_wallet,
config,
swap_id,
db,
)
.await?;
Ok(state)
}
pub fn is_complete(state: &AliceState) -> bool {
matches!(
state,
@ -279,6 +338,7 @@ pub async fn run_until(
config: Config,
swap_id: Uuid,
db: Database,
// TODO: Remove EventLoopHandle!
) -> Result<(AliceState, EventLoopHandle)> {
info!("Current state:{}", state);
if is_target_state(&state) {

6
swap/src/state.rs
View File

@ -18,9 +18,15 @@ pub enum Swap {
pub enum Alice {
Started {
amounts: SwapAmounts,
// TODO: This should not be saved, instead always derive it from a seed (and that seed file
// is the only thing that has to be kept secure)
a: crate::bitcoin::SecretKey,
s_a: cross_curve_dleq::Scalar,
v_a: monero::PrivateViewKey,
refund_timelock: u32,
punish_timelock: u32,
redeem_address: ::bitcoin::Address,
punish_address: ::bitcoin::Address,
},
Negotiated(alice::State3),
BtcLocked(alice::State3),

232
swap/tests/alice_safe_restart.rs
View File

@ -11,7 +11,6 @@ use xmr_btc::config::Config;
pub mod testutils;
use crate::testutils::{init_alice, init_bob};
use std::convert::TryFrom;
use testutils::init_tracing;
#[tokio::test]
@ -32,7 +31,6 @@ async fn given_alice_restarts_after_encsig_is_learned_resume_swap() {
let bob_btc_starting_balance = btc_to_swap * 10;
let bob_xmr_starting_balance = xmr_btc::monero::Amount::ZERO;
let alice_btc_starting_balance = bitcoin::Amount::ZERO;
let alice_xmr_starting_balance = xmr_to_swap * 10;
let alice_multiaddr: Multiaddr = "/ip4/127.0.0.1/tcp/9877"
@ -42,7 +40,7 @@ async fn given_alice_restarts_after_encsig_is_learned_resume_swap() {
let config = Config::regtest();
let (
alice_state,
start_state,
mut alice_event_loop,
alice_event_loop_handle,
alice_btc_wallet,
@ -51,7 +49,6 @@ async fn given_alice_restarts_after_encsig_is_learned_resume_swap() {
&bitcoind,
&monero,
btc_to_swap,
alice_btc_starting_balance,
xmr_to_swap,
alice_xmr_starting_balance,
alice_multiaddr.clone(),
@ -61,7 +58,7 @@ async fn given_alice_restarts_after_encsig_is_learned_resume_swap() {
let (bob_state, bob_event_loop, bob_event_loop_handle, bob_btc_wallet, bob_xmr_wallet, bob_db) =
init_bob(
alice_multiaddr,
alice_multiaddr.clone(),
&bitcoind,
&monero,
btc_to_swap,
@ -94,8 +91,8 @@ async fn given_alice_restarts_after_encsig_is_learned_resume_swap() {
let alice_swap_id = Uuid::new_v4();
let (alice_state, alice_event_loop_handle) = alice::swap::run_until(
alice_state,
let (alice_state, _) = alice::swap::run_until(
start_state,
alice::swap::is_encsig_learned,
alice_event_loop_handle,
alice_btc_wallet.clone(),
@ -110,19 +107,29 @@ async fn given_alice_restarts_after_encsig_is_learned_resume_swap() {
assert!(matches!(alice_state, AliceState::EncSignLearned {..}));
let alice_db = Database::open(alice_db_datadir.path()).unwrap();
let alice_state = alice_db.get_state(alice_swap_id).unwrap();
let state_before_restart = alice_db.get_state(alice_swap_id).unwrap();
if let swap::state::Swap::Alice(state) = alice_state.clone() {
if let swap::state::Swap::Alice(state) = state_before_restart.clone() {
assert!(matches!(state, swap::state::Alice::EncSignLearned {..}));
}
let (alice_state, _) = alice::swap::swap(
AliceState::try_from(alice_state).unwrap(),
alice_event_loop_handle,
alice_btc_wallet.clone(),
alice_xmr_wallet.clone(),
let (_, mut event_loop_after_restart, event_loop_handle_after_restart) =
testutils::init_alice_eventloop(
btc_to_swap,
xmr_to_swap,
alice_btc_wallet.clone(),
alice_multiaddr,
config,
)
.await;
let _alice_swarm_fut = tokio::spawn(async move { event_loop_after_restart.run().await });
let alice_state = alice::swap::recover(
event_loop_handle_after_restart,
alice_btc_wallet,
alice_xmr_wallet,
Config::regtest(),
Uuid::new_v4(),
alice_swap_id,
alice_db,
)
.await
@ -130,198 +137,3 @@ async fn given_alice_restarts_after_encsig_is_learned_resume_swap() {
assert!(matches!(alice_state, AliceState::BtcRedeemed {..}));
}
// #[tokio::test]
// async fn given_alice_restarts_after_xmr_is_locked_refund_swap() {
// setup_tracing();
//
// let config = Config::regtest();
//
// 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,
// config
// )
// .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_fut = async {
// let rng = &mut OsRng;
// let (alice_start_state, state0) = {
// 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);
// let redeem_address =
// alice_btc_wallet.as_ref().new_address().await.unwrap(); let
// punish_address = redeem_address.clone(); let state0 =
// xmr_btc::alice::State0::new( a,
// s_a,
// v_a,
// amounts.btc,
// amounts.xmr,
// config.bitcoin_refund_timelock,
// config.bitcoin_punish_timelock,
// redeem_address,
// punish_address,
// );
//
// (
// AliceState::Started {
// amounts,
// state0: state0.clone(),
// },
// state0,
// )
// };
// let alice_behaviour = alice::Behaviour::new(state0.clone());
// let alice_transport = build(alice_behaviour.identity()).unwrap();
// let (mut alice_event_loop_1, alice_event_loop_handle) =
// alice::event_loop::EventLoop::new( alice_transport,
// alice_behaviour,
// alice_multiaddr.clone(),
// )
// .unwrap();
//
// let _alice_event_loop_1 = tokio::spawn(async move {
// alice_event_loop_1.run().await });
//
// let config = xmr_btc::config::Config::regtest();
// let swap_id = Uuid::new_v4();
//
// let db = Database::open(alice_db_dir.path()).unwrap();
//
// // Alice reaches encsig_learned
// alice::swap::run_until(
// alice_start_state,
// |state| matches!(state, AliceState::XmrLocked { .. }),
// alice_event_loop_handle,
// alice_btc_wallet.clone(),
// alice_xmr_wallet.clone(),
// config,
// swap_id,
// db,
// )
// .await
// .unwrap();
//
// let db = Database::open(alice_db_dir.path()).unwrap();
//
// let alice_behaviour = alice::Behaviour::new(state0);
// let alice_transport = build(alice_behaviour.identity()).unwrap();
// let (mut alice_event_loop_2, alice_event_loop_handle) =
// alice::event_loop::EventLoop::new( alice_transport,
// alice_behaviour,
// alice_multiaddr.clone(),
// )
// .unwrap();
//
// let _alice_event_loop_2 = tokio::spawn(async move {
// alice_event_loop_2.run().await });
//
// // 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,
// alice_event_loop_handle,
// alice_btc_wallet.clone(),
// alice_xmr_wallet.clone(),
// config,
// swap_id,
// db,
// )
// .await
// };
//
// let (bob_swap, bob_event_loop) = {
// 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,
// config.bitcoin_refund_timelock,
// config.bitcoin_punish_timelock,
// refund_address,
// );
// let bob_state = BobState::Started {
// state0,
// amounts,
// addr: alice_multiaddr.clone(),
// };
// let (bob_event_loop, bob_event_loop_handle) =
// bob::event_loop::EventLoop::new(bob_transport,
// bob_behaviour).unwrap();
//
// (
// bob::swap::swap(
// bob_state,
// bob_event_loop_handle,
// bob_db,
// bob_btc_wallet.clone(),
// bob_xmr_wallet.clone(),
// OsRng,
// Uuid::new_v4(),
// ),
// bob_event_loop,
// )
// };
//
// let _bob_event_loop = tokio::spawn(async move {
// bob_event_loop.run().await });
//
// try_join(alice_swap_fut, 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);
// }

395
swap/tests/e2e.rs
View File

@ -1,395 +0,0 @@
use crate::testutils::{init_alice, init_bob};
use bitcoin_harness::Bitcoind;
use futures::future::try_join;
use libp2p::Multiaddr;
use monero_harness::Monero;
use rand::rngs::OsRng;
use swap::{alice, alice::swap::AliceState, bob, bob::swap::BobState, storage::Database};
use tempfile::tempdir;
use testcontainers::clients::Cli;
use testutils::init_tracing;
use uuid::Uuid;
use xmr_btc::{bitcoin, config::Config};
pub mod testutils;
/// Run the following tests with RUST_MIN_STACK=10000000
#[tokio::test]
async fn happy_path() {
let _guard = init_tracing();
let cli = Cli::default();
let bitcoind = Bitcoind::new(&cli, "0.19.1").unwrap();
let _ = bitcoind.init(5).await;
let (monero, _container) =
Monero::new(&cli, None, vec!["alice".to_string(), "bob".to_string()])
.await
.unwrap();
let btc_to_swap = bitcoin::Amount::from_sat(1_000_000);
let btc_alice = bitcoin::Amount::ZERO;
let btc_bob = btc_to_swap * 10;
// this xmr value matches the logic of alice::calculate_amounts i.e. btc *
// 10_000 * 100
let xmr_to_swap = xmr_btc::monero::Amount::from_piconero(1_000_000_000_000);
let xmr_alice = xmr_to_swap * 10;
let xmr_bob = xmr_btc::monero::Amount::ZERO;
// todo: This should not be hardcoded
let alice_multiaddr: Multiaddr = "/ip4/127.0.0.1/tcp/9876"
.parse()
.expect("failed to parse Alice's address");
let config = Config::regtest();
let (
alice_state,
mut alice_event_loop,
alice_event_loop_handle,
alice_btc_wallet,
alice_xmr_wallet,
) = init_alice(
&bitcoind,
&monero,
btc_to_swap,
btc_alice,
xmr_to_swap,
xmr_alice,
alice_multiaddr.clone(),
config,
)
.await;
let (bob_state, bob_event_loop, bob_event_loop_handle, bob_btc_wallet, bob_xmr_wallet, bob_db) =
init_bob(
alice_multiaddr,
&bitcoind,
&monero,
btc_to_swap,
btc_bob,
xmr_to_swap,
xmr_bob,
config,
)
.await;
let alice_db_datadir = tempdir().unwrap();
let alice_db = Database::open(alice_db_datadir.path()).unwrap();
let alice_swap_fut = alice::swap::swap(
alice_state,
alice_event_loop_handle,
alice_btc_wallet.clone(),
alice_xmr_wallet.clone(),
config,
Uuid::new_v4(),
alice_db,
);
let _alice_swarm_fut = tokio::spawn(async move { alice_event_loop.run().await });
let bob_swap_fut = bob::swap::swap(
bob_state,
bob_event_loop_handle,
bob_db,
bob_btc_wallet.clone(),
bob_xmr_wallet.clone(),
OsRng,
Uuid::new_v4(),
);
let _bob_swarm_fut = tokio::spawn(async move { bob_event_loop.run().await });
try_join(alice_swap_fut, bob_swap_fut).await.unwrap();
let btc_alice_final = alice_btc_wallet.as_ref().balance().await.unwrap();
let btc_bob_final = bob_btc_wallet.as_ref().balance().await.unwrap();
let xmr_alice_final = alice_xmr_wallet.as_ref().get_balance().await.unwrap();
bob_xmr_wallet.as_ref().0.refresh().await.unwrap();
let xmr_bob_final = bob_xmr_wallet.as_ref().get_balance().await.unwrap();
assert_eq!(
btc_alice_final,
btc_alice + btc_to_swap - bitcoin::Amount::from_sat(bitcoin::TX_FEE)
);
assert!(btc_bob_final <= btc_bob - btc_to_swap);
assert!(xmr_alice_final <= xmr_alice - xmr_to_swap);
assert_eq!(xmr_bob_final, xmr_bob + xmr_to_swap);
}
/// Bob locks Btc and Alice locks Xmr. Bob does not act; he fails to send Alice
/// the encsig and fail to refund or redeem. Alice punishes.
#[tokio::test]
async fn alice_punishes_if_bob_never_acts_after_fund() {
let _guard = init_tracing();
let cli = Cli::default();
let bitcoind = Bitcoind::new(&cli, "0.19.1").unwrap();
let _ = bitcoind.init(5).await;
let (monero, _container) =
Monero::new(&cli, None, vec!["alice".to_string(), "bob".to_string()])
.await
.unwrap();
let btc_to_swap = bitcoin::Amount::from_sat(1_000_000);
let xmr_to_swap = xmr_btc::monero::Amount::from_piconero(1_000_000_000_000);
let bob_btc_starting_balance = btc_to_swap * 10;
let bob_xmr_starting_balance = xmr_btc::monero::Amount::ZERO;
let alice_btc_starting_balance = bitcoin::Amount::ZERO;
let alice_xmr_starting_balance = xmr_to_swap * 10;
// todo: This should not be hardcoded
let alice_multiaddr: Multiaddr = "/ip4/127.0.0.1/tcp/9877"
.parse()
.expect("failed to parse Alice's address");
let config = Config::regtest();
let (
alice_state,
mut alice_event_loop,
alice_event_loop_handle,
alice_btc_wallet,
alice_xmr_wallet,
) = init_alice(
&bitcoind,
&monero,
btc_to_swap,
alice_btc_starting_balance,
xmr_to_swap,
alice_xmr_starting_balance,
alice_multiaddr.clone(),
config,
)
.await;
let (bob_state, bob_event_loop, bob_event_loop_handle, bob_btc_wallet, bob_xmr_wallet, bob_db) =
init_bob(
alice_multiaddr,
&bitcoind,
&monero,
btc_to_swap,
bob_btc_starting_balance,
xmr_to_swap,
bob_xmr_starting_balance,
config,
)
.await;
let bob_btc_locked_fut = bob::swap::run_until(
bob_state,
bob::swap::is_btc_locked,
bob_event_loop_handle,
bob_db,
bob_btc_wallet.clone(),
bob_xmr_wallet.clone(),
OsRng,
Uuid::new_v4(),
);
let _bob_swarm_fut = tokio::spawn(async move { bob_event_loop.run().await });
let alice_db_datadir = tempdir().unwrap();
let alice_db = Database::open(alice_db_datadir.path()).unwrap();
let alice_fut = alice::swap::swap(
alice_state,
alice_event_loop_handle,
alice_btc_wallet.clone(),
alice_xmr_wallet.clone(),
Config::regtest(),
Uuid::new_v4(),
alice_db,
);
let _alice_swarm_fut = tokio::spawn(async move { alice_event_loop.run().await });
// Wait until alice has locked xmr and bob has locked btc
let ((alice_state, _), bob_state) = try_join(alice_fut, bob_btc_locked_fut).await.unwrap();
assert!(matches!(alice_state, AliceState::Punished));
let bob_state3 = if let BobState::BtcLocked(state3, ..) = bob_state {
state3
} else {
panic!("Bob in unexpected state");
};
let btc_alice_final = alice_btc_wallet.as_ref().balance().await.unwrap();
let btc_bob_final = bob_btc_wallet.as_ref().balance().await.unwrap();
// lock_tx_bitcoin_fee is determined by the wallet, it is not necessarily equal
// to TX_FEE
let lock_tx_bitcoin_fee = bob_btc_wallet
.transaction_fee(bob_state3.tx_lock_id())
.await
.unwrap();
assert_eq!(
btc_alice_final,
alice_btc_starting_balance + btc_to_swap - bitcoin::Amount::from_sat(2 * bitcoin::TX_FEE)
);
assert_eq!(
btc_bob_final,
bob_btc_starting_balance - btc_to_swap - lock_tx_bitcoin_fee
);
}
// Bob locks btc and Alice locks xmr. Alice fails to act so Bob refunds. Alice
// then also refunds.
#[tokio::test]
async fn both_refund() {
use tracing_subscriber::util::SubscriberInitExt as _;
let _guard = tracing_subscriber::fmt()
.with_env_filter("swap=info,xmr_btc=info")
.with_ansi(false)
.set_default();
let cli = Cli::default();
let bitcoind = Bitcoind::new(&cli, "0.19.1").unwrap();
let _ = bitcoind.init(5).await;
let (monero, _container) =
Monero::new(&cli, None, vec!["alice".to_string(), "bob".to_string()])
.await
.unwrap();
let btc_to_swap = bitcoin::Amount::from_sat(1_000_000);
let xmr_to_swap = xmr_btc::monero::Amount::from_piconero(1_000_000_000_000);
let bob_btc_starting_balance = btc_to_swap * 10;
let bob_xmr_starting_balance = xmr_btc::monero::Amount::from_piconero(0);
let alice_btc_starting_balance = bitcoin::Amount::ZERO;
let alice_xmr_starting_balance = xmr_to_swap * 10;
// todo: This should not be hardcoded
let alice_multiaddr: Multiaddr = "/ip4/127.0.0.1/tcp/9879"
.parse()
.expect("failed to parse Alice's address");
let (
alice_state,
mut alice_swarm_driver,
alice_swarm_handle,
alice_btc_wallet,
alice_xmr_wallet,
) = init_alice(
&bitcoind,
&monero,
btc_to_swap,
alice_btc_starting_balance,
xmr_to_swap,
alice_xmr_starting_balance,
alice_multiaddr.clone(),
Config::regtest(),
)
.await;
let (bob_state, bob_swarm_driver, bob_swarm_handle, bob_btc_wallet, bob_xmr_wallet, bob_db) =
init_bob(
alice_multiaddr,
&bitcoind,
&monero,
btc_to_swap,
bob_btc_starting_balance,
xmr_to_swap,
bob_xmr_starting_balance,
Config::regtest(),
)
.await;
let bob_fut = bob::swap::swap(
bob_state,
bob_swarm_handle,
bob_db,
bob_btc_wallet.clone(),
bob_xmr_wallet.clone(),
OsRng,
Uuid::new_v4(),
);
tokio::spawn(async move { bob_swarm_driver.run().await });
let alice_swap_id = Uuid::new_v4();
let alice_db_datadir = tempdir().unwrap();
let alice_db = Database::open(alice_db_datadir.path()).unwrap();
let alice_xmr_locked_fut = alice::swap::run_until(
alice_state,
alice::swap::is_xmr_locked,
alice_swarm_handle,
alice_btc_wallet.clone(),
alice_xmr_wallet.clone(),
Config::regtest(),
alice_swap_id,
alice_db,
);
tokio::spawn(async move { alice_swarm_driver.run().await });
// Wait until alice has locked xmr and bob has locked btc
let (bob_state, (alice_state, alice_swarm_handle)) =
try_join(bob_fut, alice_xmr_locked_fut).await.unwrap();
let bob_state4 = if let BobState::BtcRefunded(state4) = bob_state {
state4
} else {
panic!("Bob in unexpected state");
};
let alice_db = Database::open(alice_db_datadir.path()).unwrap();
let (alice_state, _) = alice::swap::swap(
alice_state,
alice_swarm_handle,
alice_btc_wallet.clone(),
alice_xmr_wallet.clone(),
Config::regtest(),
alice_swap_id,
alice_db,
)
.await
.unwrap();
assert!(matches!(alice_state, AliceState::XmrRefunded));
let btc_alice_final = alice_btc_wallet.as_ref().balance().await.unwrap();
let btc_bob_final = bob_btc_wallet.as_ref().balance().await.unwrap();
// lock_tx_bitcoin_fee is determined by the wallet, it is not necessarily equal
// to TX_FEE
let lock_tx_bitcoin_fee = bob_btc_wallet
.transaction_fee(bob_state4.tx_lock_id())
.await
.unwrap();
assert_eq!(btc_alice_final, alice_btc_starting_balance);
// Alice or Bob could publish TxCancel. This means Bob could pay tx fees for
// TxCancel and TxRefund or only TxRefund
let btc_bob_final_alice_submitted_cancel = btc_bob_final
== bob_btc_starting_balance
- lock_tx_bitcoin_fee
- bitcoin::Amount::from_sat(bitcoin::TX_FEE);
let btc_bob_final_bob_submitted_cancel = btc_bob_final
== bob_btc_starting_balance
- lock_tx_bitcoin_fee
- bitcoin::Amount::from_sat(2 * bitcoin::TX_FEE);
assert!(btc_bob_final_alice_submitted_cancel || btc_bob_final_bob_submitted_cancel);
alice_xmr_wallet.as_ref().0.refresh().await.unwrap();
let xmr_alice_final = alice_xmr_wallet.as_ref().get_balance().await.unwrap();
assert_eq!(xmr_alice_final, xmr_to_swap);
bob_xmr_wallet.as_ref().0.refresh().await.unwrap();
let xmr_bob_final = bob_xmr_wallet.as_ref().get_balance().await.unwrap();
assert_eq!(xmr_bob_final, bob_xmr_starting_balance);
}

122
swap/tests/happy_path.rs Normal file
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@ -0,0 +1,122 @@
use crate::testutils::{init_alice, init_bob};
use bitcoin_harness::Bitcoind;
use futures::future::try_join;
use libp2p::Multiaddr;
use monero_harness::Monero;
use rand::rngs::OsRng;
use swap::{alice, bob, storage::Database};
use tempfile::tempdir;
use testcontainers::clients::Cli;
use testutils::init_tracing;
use uuid::Uuid;
use xmr_btc::{bitcoin, config::Config};
pub mod testutils;
/// Run the following tests with RUST_MIN_STACK=10000000
#[tokio::test]
async fn happy_path() {
let _guard = init_tracing();
let cli = Cli::default();
let bitcoind = Bitcoind::new(&cli, "0.19.1").unwrap();
let _ = bitcoind.init(5).await;
let (monero, _container) =
Monero::new(&cli, None, vec!["alice".to_string(), "bob".to_string()])
.await
.unwrap();
let btc_to_swap = bitcoin::Amount::from_sat(1_000_000);
let btc_alice = bitcoin::Amount::ZERO;
let btc_bob = btc_to_swap * 10;
// this xmr value matches the logic of alice::calculate_amounts i.e. btc *
// 10_000 * 100
let xmr_to_swap = xmr_btc::monero::Amount::from_piconero(1_000_000_000_000);
let xmr_alice = xmr_to_swap * 10;
let xmr_bob = xmr_btc::monero::Amount::ZERO;
// todo: This should not be hardcoded
let alice_multiaddr: Multiaddr = "/ip4/127.0.0.1/tcp/9876"
.parse()
.expect("failed to parse Alice's address");
let config = Config::regtest();
let (
alice_state,
mut alice_event_loop,
alice_event_loop_handle,
alice_btc_wallet,
alice_xmr_wallet,
) = init_alice(
&bitcoind,
&monero,
btc_to_swap,
xmr_to_swap,
xmr_alice,
alice_multiaddr.clone(),
config,
)
.await;
let (bob_state, bob_event_loop, bob_event_loop_handle, bob_btc_wallet, bob_xmr_wallet, bob_db) =
init_bob(
alice_multiaddr,
&bitcoind,
&monero,
btc_to_swap,
btc_bob,
xmr_to_swap,
xmr_bob,
config,
)
.await;
let alice_db_datadir = tempdir().unwrap();
let alice_db = Database::open(alice_db_datadir.path()).unwrap();
let alice_swap_fut = alice::swap::swap(
alice_state,
alice_event_loop_handle,
alice_btc_wallet.clone(),
alice_xmr_wallet.clone(),
config,
Uuid::new_v4(),
alice_db,
);
let _alice_swarm_fut = tokio::spawn(async move { alice_event_loop.run().await });
let bob_swap_fut = bob::swap::swap(
bob_state,
bob_event_loop_handle,
bob_db,
bob_btc_wallet.clone(),
bob_xmr_wallet.clone(),
OsRng,
Uuid::new_v4(),
);
let _bob_swarm_fut = tokio::spawn(async move { bob_event_loop.run().await });
try_join(alice_swap_fut, bob_swap_fut).await.unwrap();
let btc_alice_final = alice_btc_wallet.as_ref().balance().await.unwrap();
let btc_bob_final = bob_btc_wallet.as_ref().balance().await.unwrap();
let xmr_alice_final = alice_xmr_wallet.as_ref().get_balance().await.unwrap();
bob_xmr_wallet.as_ref().0.refresh().await.unwrap();
let xmr_bob_final = bob_xmr_wallet.as_ref().get_balance().await.unwrap();
assert_eq!(
btc_alice_final,
btc_alice + btc_to_swap - bitcoin::Amount::from_sat(bitcoin::TX_FEE)
);
assert!(btc_bob_final <= btc_bob - btc_to_swap);
assert!(xmr_alice_final <= xmr_alice - xmr_to_swap);
assert_eq!(xmr_bob_final, xmr_bob + xmr_to_swap);
}

133
swap/tests/punish.rs Normal file
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@ -0,0 +1,133 @@
use crate::testutils::{init_alice, init_bob};
use bitcoin_harness::Bitcoind;
use futures::future::try_join;
use libp2p::Multiaddr;
use monero_harness::Monero;
use rand::rngs::OsRng;
use swap::{alice, alice::swap::AliceState, bob, bob::swap::BobState, storage::Database};
use tempfile::tempdir;
use testcontainers::clients::Cli;
use testutils::init_tracing;
use uuid::Uuid;
use xmr_btc::{bitcoin, config::Config};
pub mod testutils;
/// Bob locks Btc and Alice locks Xmr. Bob does not act; he fails to send Alice
/// the encsig and fail to refund or redeem. Alice punishes.
#[tokio::test]
async fn alice_punishes_if_bob_never_acts_after_fund() {
let _guard = init_tracing();
let cli = Cli::default();
let bitcoind = Bitcoind::new(&cli, "0.19.1").unwrap();
let _ = bitcoind.init(5).await;
let (monero, _container) =
Monero::new(&cli, None, vec!["alice".to_string(), "bob".to_string()])
.await
.unwrap();
let btc_to_swap = bitcoin::Amount::from_sat(1_000_000);
let xmr_to_swap = xmr_btc::monero::Amount::from_piconero(1_000_000_000_000);
let bob_btc_starting_balance = btc_to_swap * 10;
let bob_xmr_starting_balance = xmr_btc::monero::Amount::ZERO;
let alice_btc_starting_balance = bitcoin::Amount::ZERO;
let alice_xmr_starting_balance = xmr_to_swap * 10;
// todo: This should not be hardcoded
let alice_multiaddr: Multiaddr = "/ip4/127.0.0.1/tcp/9877"
.parse()
.expect("failed to parse Alice's address");
let config = Config::regtest();
let (
alice_state,
mut alice_event_loop,
alice_event_loop_handle,
alice_btc_wallet,
alice_xmr_wallet,
) = init_alice(
&bitcoind,
&monero,
btc_to_swap,
xmr_to_swap,
alice_xmr_starting_balance,
alice_multiaddr.clone(),
config,
)
.await;
let (bob_state, bob_event_loop, bob_event_loop_handle, bob_btc_wallet, bob_xmr_wallet, bob_db) =
init_bob(
alice_multiaddr,
&bitcoind,
&monero,
btc_to_swap,
bob_btc_starting_balance,
xmr_to_swap,
bob_xmr_starting_balance,
config,
)
.await;
let bob_btc_locked_fut = bob::swap::run_until(
bob_state,
bob::swap::is_btc_locked,
bob_event_loop_handle,
bob_db,
bob_btc_wallet.clone(),
bob_xmr_wallet.clone(),
OsRng,
Uuid::new_v4(),
);
let _bob_swarm_fut = tokio::spawn(async move { bob_event_loop.run().await });
let alice_db_datadir = tempdir().unwrap();
let alice_db = Database::open(alice_db_datadir.path()).unwrap();
let alice_fut = alice::swap::swap(
alice_state,
alice_event_loop_handle,
alice_btc_wallet.clone(),
alice_xmr_wallet.clone(),
Config::regtest(),
Uuid::new_v4(),
alice_db,
);
let _alice_swarm_fut = tokio::spawn(async move { alice_event_loop.run().await });
// Wait until alice has locked xmr and bob has locked btc
let ((alice_state, _), bob_state) = try_join(alice_fut, bob_btc_locked_fut).await.unwrap();
assert!(matches!(alice_state, AliceState::Punished));
let bob_state3 = if let BobState::BtcLocked(state3, ..) = bob_state {
state3
} else {
panic!("Bob in unexpected state");
};
let btc_alice_final = alice_btc_wallet.as_ref().balance().await.unwrap();
let btc_bob_final = bob_btc_wallet.as_ref().balance().await.unwrap();
// lock_tx_bitcoin_fee is determined by the wallet, it is not necessarily equal
// to TX_FEE
let lock_tx_bitcoin_fee = bob_btc_wallet
.transaction_fee(bob_state3.tx_lock_id())
.await
.unwrap();
assert_eq!(
btc_alice_final,
alice_btc_starting_balance + btc_to_swap - bitcoin::Amount::from_sat(2 * bitcoin::TX_FEE)
);
assert_eq!(
btc_bob_final,
bob_btc_starting_balance - btc_to_swap - lock_tx_bitcoin_fee
);
}

167
swap/tests/refund.rs Normal file
View File

@ -0,0 +1,167 @@
use crate::testutils::{init_alice, init_bob};
use bitcoin_harness::Bitcoind;
use futures::future::try_join;
use libp2p::Multiaddr;
use monero_harness::Monero;
use rand::rngs::OsRng;
use swap::{alice, alice::swap::AliceState, bob, bob::swap::BobState, storage::Database};
use tempfile::tempdir;
use testcontainers::clients::Cli;
use testutils::init_tracing;
use uuid::Uuid;
use xmr_btc::{bitcoin, config::Config};
pub mod testutils;
// Bob locks btc and Alice locks xmr. Alice fails to act so Bob refunds. Alice
// then also refunds.
#[tokio::test]
async fn both_refund() {
let _guard = init_tracing();
use tracing_subscriber::util::SubscriberInitExt as _;
let _guard = tracing_subscriber::fmt()
.with_env_filter("swap=info,xmr_btc=info")
.with_ansi(false)
.set_default();
let cli = Cli::default();
let bitcoind = Bitcoind::new(&cli, "0.19.1").unwrap();
let _ = bitcoind.init(5).await;
let (monero, _container) =
Monero::new(&cli, None, vec!["alice".to_string(), "bob".to_string()])
.await
.unwrap();
let btc_to_swap = bitcoin::Amount::from_sat(1_000_000);
let xmr_to_swap = xmr_btc::monero::Amount::from_piconero(1_000_000_000_000);
let bob_btc_starting_balance = btc_to_swap * 10;
let bob_xmr_starting_balance = xmr_btc::monero::Amount::from_piconero(0);
let alice_btc_starting_balance = bitcoin::Amount::ZERO;
let alice_xmr_starting_balance = xmr_to_swap * 10;
// todo: This should not be hardcoded
let alice_multiaddr: Multiaddr = "/ip4/127.0.0.1/tcp/9879"
.parse()
.expect("failed to parse Alice's address");
let (
alice_state,
mut alice_swarm_driver,
alice_swarm_handle,
alice_btc_wallet,
alice_xmr_wallet,
) = init_alice(
&bitcoind,
&monero,
btc_to_swap,
xmr_to_swap,
alice_xmr_starting_balance,
alice_multiaddr.clone(),
Config::regtest(),
)
.await;
let (bob_state, bob_swarm_driver, bob_swarm_handle, bob_btc_wallet, bob_xmr_wallet, bob_db) =
init_bob(
alice_multiaddr,
&bitcoind,
&monero,
btc_to_swap,
bob_btc_starting_balance,
xmr_to_swap,
bob_xmr_starting_balance,
Config::regtest(),
)
.await;
let bob_fut = bob::swap::swap(
bob_state,
bob_swarm_handle,
bob_db,
bob_btc_wallet.clone(),
bob_xmr_wallet.clone(),
OsRng,
Uuid::new_v4(),
);
tokio::spawn(async move { bob_swarm_driver.run().await });
let alice_swap_id = Uuid::new_v4();
let alice_db_datadir = tempdir().unwrap();
let alice_db = Database::open(alice_db_datadir.path()).unwrap();
let alice_xmr_locked_fut = alice::swap::run_until(
alice_state,
alice::swap::is_xmr_locked,
alice_swarm_handle,
alice_btc_wallet.clone(),
alice_xmr_wallet.clone(),
Config::regtest(),
alice_swap_id,
alice_db,
);
tokio::spawn(async move { alice_swarm_driver.run().await });
// Wait until alice has locked xmr and bob has locked btc
let (bob_state, (alice_state, alice_swarm_handle)) =
try_join(bob_fut, alice_xmr_locked_fut).await.unwrap();
let bob_state4 = if let BobState::BtcRefunded(state4) = bob_state {
state4
} else {
panic!("Bob in unexpected state");
};
let alice_db = Database::open(alice_db_datadir.path()).unwrap();
let (alice_state, _) = alice::swap::swap(
alice_state,
alice_swarm_handle,
alice_btc_wallet.clone(),
alice_xmr_wallet.clone(),
Config::regtest(),
alice_swap_id,
alice_db,
)
.await
.unwrap();
assert!(matches!(alice_state, AliceState::XmrRefunded));
let btc_alice_final = alice_btc_wallet.as_ref().balance().await.unwrap();
let btc_bob_final = bob_btc_wallet.as_ref().balance().await.unwrap();
// lock_tx_bitcoin_fee is determined by the wallet, it is not necessarily equal
// to TX_FEE
let lock_tx_bitcoin_fee = bob_btc_wallet
.transaction_fee(bob_state4.tx_lock_id())
.await
.unwrap();
assert_eq!(btc_alice_final, alice_btc_starting_balance);
// Alice or Bob could publish TxCancel. This means Bob could pay tx fees for
// TxCancel and TxRefund or only TxRefund
let btc_bob_final_alice_submitted_cancel = btc_bob_final
== bob_btc_starting_balance
- lock_tx_bitcoin_fee
- bitcoin::Amount::from_sat(bitcoin::TX_FEE);
let btc_bob_final_bob_submitted_cancel = btc_bob_final
== bob_btc_starting_balance
- lock_tx_bitcoin_fee
- bitcoin::Amount::from_sat(2 * bitcoin::TX_FEE);
assert!(btc_bob_final_alice_submitted_cancel || btc_bob_final_bob_submitted_cancel);
alice_xmr_wallet.as_ref().0.refresh().await.unwrap();
let xmr_alice_final = alice_xmr_wallet.as_ref().get_balance().await.unwrap();
assert_eq!(xmr_alice_final, xmr_to_swap);
bob_xmr_wallet.as_ref().0.refresh().await.unwrap();
let xmr_bob_final = bob_xmr_wallet.as_ref().get_balance().await.unwrap();
assert_eq!(xmr_bob_final, bob_xmr_starting_balance);
}

178
swap/tests/testutils/mod.rs
View File

@ -89,23 +89,60 @@ pub async fn init_bob(
)
}
#[allow(clippy::too_many_arguments)]
pub async fn init_alice(
bitcoind: &Bitcoind<'_>,
monero: &Monero,
pub async fn init_alice_eventloop(
btc_to_swap: bitcoin::Amount,
_btc_starting_balance: bitcoin::Amount,
xmr_to_swap: xmr_btc::monero::Amount,
xmr_starting_balance: xmr_btc::monero::Amount,
xmr_to_swap: monero::Amount,
alice_btc_wallet: Arc<bitcoin::Wallet>,
listen: Multiaddr,
config: Config,
) -> (
AliceState,
alice::event_loop::EventLoop,
alice::event_loop::EventLoopHandle,
Arc<swap::bitcoin::Wallet>,
Arc<swap::monero::Wallet>,
) {
let rng = &mut OsRng;
let amounts = SwapAmounts {
btc: btc_to_swap,
xmr: xmr_to_swap,
};
let a = crate::bitcoin::SecretKey::new_random(rng);
let s_a = cross_curve_dleq::Scalar::random(rng);
let v_a = xmr_btc::monero::PrivateViewKey::new_random(rng);
let redeem_address = alice_btc_wallet.as_ref().new_address().await.unwrap();
let punish_address = redeem_address.clone();
let state0 = State0::new(
a,
s_a,
v_a,
amounts.btc,
amounts.xmr,
config.bitcoin_refund_timelock,
config.bitcoin_punish_timelock,
redeem_address,
punish_address,
);
let start_state = AliceState::Started {
amounts,
state0: state0.clone(),
};
let alice_behaviour = alice::Behaviour::new(state0);
let alice_transport = build(alice_behaviour.identity()).unwrap();
let (swarm_driver, handle) =
alice::event_loop::EventLoop::new(alice_transport, alice_behaviour, listen).unwrap();
(start_state, swarm_driver, handle)
}
pub async fn init_alice_wallets(
bitcoind: &Bitcoind<'_>,
monero: &Monero,
xmr_starting_balance: xmr_btc::monero::Amount,
config: Config,
) -> (Arc<monero::Wallet>, Arc<bitcoin::Wallet>) {
monero
.init(vec![("alice", xmr_starting_balance.as_piconero())])
.await
@ -121,46 +158,38 @@ pub async fn init_alice(
.unwrap(),
);
let amounts = SwapAmounts {
btc: btc_to_swap,
xmr: xmr_to_swap,
};
(alice_xmr_wallet, alice_btc_wallet)
}
let rng = &mut OsRng;
let (alice_state, alice_behaviour) = {
let a = crate::bitcoin::SecretKey::new_random(rng);
let s_a = cross_curve_dleq::Scalar::random(rng);
let v_a = xmr_btc::monero::PrivateViewKey::new_random(rng);
let redeem_address = alice_btc_wallet.as_ref().new_address().await.unwrap();
let punish_address = redeem_address.clone();
let state0 = State0::new(
a,
s_a,
v_a,
amounts.btc,
amounts.xmr,
config.bitcoin_refund_timelock,
config.bitcoin_punish_timelock,
redeem_address,
punish_address,
);
(
AliceState::Started {
amounts,
state0: state0.clone(),
},
alice::Behaviour::new(state0),
)
};
let alice_transport = build(alice_behaviour.identity()).unwrap();
let (swarm_driver, handle) =
alice::event_loop::EventLoop::new(alice_transport, alice_behaviour, listen).unwrap();
#[allow(clippy::too_many_arguments)]
pub async fn init_alice(
bitcoind: &Bitcoind<'_>,
monero: &Monero,
btc_to_swap: bitcoin::Amount,
xmr_to_swap: monero::Amount,
xmr_starting_balance: xmr_btc::monero::Amount,
listen: Multiaddr,
config: Config,
) -> (
AliceState,
alice::event_loop::EventLoop,
alice::event_loop::EventLoopHandle,
Arc<swap::bitcoin::Wallet>,
Arc<swap::monero::Wallet>,
) {
let (alice_xmr_wallet, alice_btc_wallet) =
init_alice_wallets(bitcoind, monero, xmr_starting_balance, config).await;
let (alice_start_state, swarm_driver, handle) = init_alice_eventloop(
btc_to_swap,
xmr_to_swap,
alice_btc_wallet.clone(),
listen,
config,
)
.await;
(
alice_state,
alice_start_state,
swarm_driver,
handle,
alice_btc_wallet,
@ -168,63 +197,6 @@ pub async fn init_alice(
)
}
/// Returns Alice's and Bob's wallets, in this order
pub async fn setup_wallets(
cli: &Cli,
_init_btc_alice: bitcoin::Amount,
init_xmr_alice: xmr_btc::monero::Amount,
init_btc_bob: bitcoin::Amount,
init_xmr_bob: xmr_btc::monero::Amount,
config: Config,
) -> (
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(), config.bitcoin_network)
.await
.unwrap();
let bob_btc_wallet =
swap::bitcoin::Wallet::new("bob", bitcoind.node_url.clone(), config.bitcoin_network)
.await
.unwrap();
bitcoind
.mint(
bob_btc_wallet.inner.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 },
)
}
// This is just to keep the containers alive
#[allow(dead_code)]
pub struct Containers<'a> {

12
xmr-btc/src/alice.rs
View File

@ -439,12 +439,12 @@ pub struct State0 {
pub s_a: cross_curve_dleq::Scalar,
pub v_a: monero::PrivateViewKey,
#[serde(with = "::bitcoin::util::amount::serde::as_sat")]
btc: bitcoin::Amount,
xmr: monero::Amount,
refund_timelock: u32,
punish_timelock: u32,
redeem_address: bitcoin::Address,
punish_address: bitcoin::Address,
pub btc: bitcoin::Amount,
pub xmr: monero::Amount,
pub refund_timelock: u32,
pub punish_timelock: u32,
pub redeem_address: bitcoin::Address,
pub punish_address: bitcoin::Address,
}
impl State0 {