mirror of
https://github.com/comit-network/xmr-btc-swap.git
synced 2024-12-24 15:09:35 -05:00
Save Alice states in db
This commit is contained in:
Franck Royer
parent
238f6a989d
commit
64b021daf4
@ -10,11 +10,15 @@ use crate::{
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wait_for_bitcoin_encrypted_signature, wait_for_bitcoin_refund, wait_for_locked_bitcoin,
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},
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},
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bitcoin,
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bitcoin::EncryptedSignature,
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network::request_response::AliceToBob,
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state,
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state::{Alice, Swap},
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storage::Database,
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SwapAmounts,
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};
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use anyhow::Result;
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use anyhow::{bail, Result};
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use async_recursion::async_recursion;
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use futures::{
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future::{select, Either},
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@ -22,8 +26,13 @@ use futures::{
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};
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use libp2p::request_response::ResponseChannel;
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use rand::{CryptoRng, RngCore};
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use std::{fmt, sync::Arc};
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use std::{
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convert::{TryFrom, TryInto},
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fmt,
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sync::Arc,
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};
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use tracing::info;
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use uuid::Uuid;
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use xmr_btc::{
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alice::{State0, State3},
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bitcoin::{TransactionBlockHeight, TxCancel, TxRefund, WatchForRawTransaction},
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@ -102,12 +111,124 @@ impl fmt::Display for AliceState {
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}
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}
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impl TryFrom<&AliceState> for state::Swap {
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type Error = anyhow::Error;
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fn try_from(alice_state: &AliceState) -> Result<Self> {
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use state::{Alice::*, Swap::Alice};
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let state = match alice_state {
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AliceState::Started { .. } => bail!("Does not support storing `Started state."),
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AliceState::Negotiated { state3, .. } => Negotiated(state3.clone()),
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AliceState::BtcLocked { state3, .. } => BtcLocked(state3.clone()),
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AliceState::XmrLocked { state3 } => XmrLocked(state3.clone()),
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AliceState::EncSignLearned {
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state3,
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encrypted_signature,
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} => EncSignLearned {
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state: state3.clone(),
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encrypted_signature: encrypted_signature.clone(),
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},
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AliceState::BtcRedeemed => SwapComplete,
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AliceState::BtcCancelled { state3, .. } => BtcCancelled(state3.clone()),
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AliceState::BtcRefunded { .. } => SwapComplete,
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AliceState::BtcPunishable { state3, .. } => BtcPunishable(state3.clone()),
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AliceState::XmrRefunded => SwapComplete,
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// TODO(Franck): it may be more efficient to store the fact that we already want to
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// abort
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AliceState::Cancelling { state3 } => XmrLocked(state3.clone()),
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AliceState::Punished => SwapComplete,
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AliceState::SafelyAborted => SwapComplete,
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};
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Ok(Alice(state))
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}
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}
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impl TryFrom<state::Swap> for AliceState {
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type Error = anyhow::Error;
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fn try_from(db_state: Swap) -> Result<Self, Self::Error> {
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use AliceState::*;
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if let Swap::Alice(state) = db_state {
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let alice_state = match state {
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Alice::Negotiated(state3) => Negotiated {
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channel: None,
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amounts: SwapAmounts {
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btc: state3.btc,
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xmr: state3.xmr,
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},
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state3,
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},
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Alice::BtcLocked(state3) => BtcLocked {
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channel: None,
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amounts: SwapAmounts {
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btc: state3.btc,
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xmr: state3.xmr,
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},
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state3,
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},
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Alice::XmrLocked(state3) => XmrLocked { state3 },
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Alice::BtcRedeemable { .. } => bail!("BtcRedeemable state is unexpected"),
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Alice::EncSignLearned {
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state,
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encrypted_signature,
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} => EncSignLearned {
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state3: state,
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encrypted_signature,
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},
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Alice::BtcCancelled(state) => {
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let tx_cancel = bitcoin::TxCancel::new(
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&state.tx_lock,
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state.refund_timelock,
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state.a.public(),
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state.B,
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);
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BtcCancelled {
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state3: state,
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tx_cancel,
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}
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}
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Alice::BtcPunishable(state) => {
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let tx_cancel = bitcoin::TxCancel::new(
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&state.tx_lock,
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state.refund_timelock,
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state.a.public(),
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state.B,
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);
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let tx_refund = bitcoin::TxRefund::new(&tx_cancel, &state.refund_address);
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BtcPunishable {
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tx_refund,
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state3: state,
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}
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}
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Alice::BtcRefunded {
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state, spend_key, ..
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} => BtcRefunded {
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spend_key,
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state3: state,
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},
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Alice::SwapComplete => {
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// TODO(Franck): Better fine grain
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AliceState::SafelyAborted
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}
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};
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Ok(alice_state)
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} else {
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bail!("Alice swap state expected.")
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}
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}
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}
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pub async fn swap(
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state: AliceState,
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event_loop_handle: EventLoopHandle,
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bitcoin_wallet: Arc<crate::bitcoin::Wallet>,
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monero_wallet: Arc<crate::monero::Wallet>,
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config: Config,
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swap_id: Uuid,
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db: Database,
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) -> Result<(AliceState, EventLoopHandle)> {
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run_until(
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state,
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@ -116,6 +237,8 @@ pub async fn swap(
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bitcoin_wallet,
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monero_wallet,
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config,
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swap_id,
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db,
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)
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.await
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}
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@ -139,6 +262,7 @@ pub fn is_xmr_locked(state: &AliceState) -> bool {
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// State machine driver for swap execution
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#[async_recursion]
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#[allow(clippy::too_many_arguments)]
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pub async fn run_until(
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state: AliceState,
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is_target_state: fn(&AliceState) -> bool,
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@ -146,6 +270,8 @@ pub async fn run_until(
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bitcoin_wallet: Arc<crate::bitcoin::Wallet>,
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monero_wallet: Arc<crate::monero::Wallet>,
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config: Config,
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swap_id: Uuid,
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db: Database,
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) -> Result<(AliceState, EventLoopHandle)> {
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info!("Current state:{}", state);
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if is_target_state(&state) {
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@ -156,17 +282,23 @@ pub async fn run_until(
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let (channel, state3) =
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negotiate(state0, amounts, &mut event_loop_handle, config).await?;
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let state = AliceState::Negotiated {
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channel: Some(channel),
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amounts,
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state3,
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};
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let db_state = (&state).try_into()?;
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db.insert_latest_state(swap_id, db_state).await?;
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run_until(
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AliceState::Negotiated {
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channel: Some(channel),
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amounts,
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state3,
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},
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state,
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is_target_state,
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event_loop_handle,
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bitcoin_wallet,
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monero_wallet,
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config,
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swap_id,
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db,
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)
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.await
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}
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@ -175,7 +307,7 @@ pub async fn run_until(
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channel,
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amounts,
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} => {
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match channel {
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let state = match channel {
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Some(channel) => {
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let _ = wait_for_locked_bitcoin(
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state3.tx_lock.txid(),
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@ -184,128 +316,113 @@ pub async fn run_until(
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)
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.await?;
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run_until(
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AliceState::BtcLocked {
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channel: Some(channel),
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amounts,
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state3,
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},
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is_target_state,
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event_loop_handle,
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bitcoin_wallet,
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monero_wallet,
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config,
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)
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.await
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AliceState::BtcLocked {
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channel: Some(channel),
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amounts,
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state3,
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}
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}
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None => {
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tracing::info!("Cannot resume swap from negotiated state, aborting");
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// Alice did not lock Xmr yet
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run_until(
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AliceState::SafelyAborted,
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is_target_state,
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event_loop_handle,
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bitcoin_wallet,
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monero_wallet,
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config,
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)
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.await
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AliceState::SafelyAborted
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}
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}
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};
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let db_state = (&state).try_into()?;
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db.insert_latest_state(swap_id, db_state).await?;
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run_until(
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state,
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is_target_state,
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event_loop_handle,
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bitcoin_wallet,
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monero_wallet,
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config,
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swap_id,
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db,
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)
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.await
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}
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AliceState::BtcLocked {
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channel,
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amounts,
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state3,
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} => match channel {
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Some(channel) => {
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lock_xmr(
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channel,
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amounts,
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state3.clone(),
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&mut event_loop_handle,
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monero_wallet.clone(),
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)
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.await?;
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} => {
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let state = match channel {
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Some(channel) => {
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lock_xmr(
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channel,
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amounts,
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state3.clone(),
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&mut event_loop_handle,
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monero_wallet.clone(),
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)
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.await?;
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run_until(
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AliceState::XmrLocked { state3 },
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is_target_state,
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event_loop_handle,
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bitcoin_wallet,
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monero_wallet,
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config,
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)
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.await
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}
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None => {
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tracing::info!("Cannot resume swap from BTC locked state, aborting");
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AliceState::XmrLocked { state3 }
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}
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None => {
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tracing::info!("Cannot resume swap from BTC locked state, aborting");
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// Alice did not lock Xmr yet
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run_until(
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AliceState::SafelyAborted,
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is_target_state,
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event_loop_handle,
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bitcoin_wallet,
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monero_wallet,
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config,
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)
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.await
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}
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},
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// Alice did not lock Xmr yet
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AliceState::SafelyAborted
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}
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};
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let db_state = (&state).try_into()?;
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db.insert_latest_state(swap_id, db_state).await?;
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run_until(
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state,
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is_target_state,
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event_loop_handle,
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bitcoin_wallet,
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monero_wallet,
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config,
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swap_id,
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db,
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)
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.await
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}
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AliceState::XmrLocked { state3 } => {
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// todo: match statement and wait for t1 can probably be expressed more cleanly
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match state3.current_epoch(bitcoin_wallet.as_ref()).await? {
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let state = match state3.current_epoch(bitcoin_wallet.as_ref()).await? {
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Epoch::T0 => {
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let wait_for_enc_sig = wait_for_bitcoin_encrypted_signature(
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&mut event_loop_handle,
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config.monero_max_finality_time,
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);
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let t1_timeout = state3.wait_for_t1(bitcoin_wallet.as_ref());
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let state3_clone = state3.clone();
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let t1_timeout = state3_clone.wait_for_t1(bitcoin_wallet.as_ref());
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tokio::select! {
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_ = t1_timeout => {
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run_until(
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AliceState::Cancelling { state3 },
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is_target_state,
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event_loop_handle,
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bitcoin_wallet,
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monero_wallet,
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config,
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)
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.await
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}
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enc_sig = wait_for_enc_sig => {
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run_until(
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AliceState::EncSignLearned {
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state3,
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encrypted_signature: enc_sig?,
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},
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is_target_state,
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event_loop_handle,
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bitcoin_wallet,
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monero_wallet,
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config,
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)
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.await
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}
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pin_mut!(wait_for_enc_sig);
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pin_mut!(t1_timeout);
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match select(t1_timeout, wait_for_enc_sig).await {
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Either::Left(_) => AliceState::Cancelling { state3 },
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Either::Right((enc_sig, _)) => AliceState::EncSignLearned {
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state3,
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encrypted_signature: enc_sig?,
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},
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}
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}
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_ => {
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run_until(
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AliceState::Cancelling { state3 },
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is_target_state,
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event_loop_handle,
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bitcoin_wallet,
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monero_wallet,
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config,
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)
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.await
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}
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}
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}
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_ => AliceState::Cancelling { state3 },
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};
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let db_state = (&state).try_into()?;
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db.insert_latest_state(swap_id, db_state).await?;
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run_until(
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state,
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is_target_state,
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event_loop_handle,
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bitcoin_wallet.clone(),
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monero_wallet,
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config,
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swap_id,
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db,
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)
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.await
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}
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AliceState::EncSignLearned {
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state3,
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encrypted_signature,
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@ -320,13 +437,18 @@ pub async fn run_until(
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) {
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Ok(tx) => tx,
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Err(_) => {
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let state = AliceState::Cancelling { state3 };
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let db_state = (&state).try_into()?;
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db.insert_latest_state(swap_id, db_state).await?;
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return run_until(
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AliceState::Cancelling { state3 },
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state,
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is_target_state,
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event_loop_handle,
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bitcoin_wallet,
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monero_wallet,
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config,
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swap_id,
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db,
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)
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.await;
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}
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@ -342,13 +464,18 @@ pub async fn run_until(
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)
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.await?;
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let state = AliceState::BtcRedeemed;
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let db_state = (&state).try_into()?;
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db.insert_latest_state(swap_id, db_state).await?;
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run_until(
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AliceState::BtcRedeemed,
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state,
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is_target_state,
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event_loop_handle,
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bitcoin_wallet,
|
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monero_wallet,
|
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config,
|
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swap_id,
|
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db,
|
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)
|
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.await
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}
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@ -363,13 +490,18 @@ pub async fn run_until(
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)
|
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.await?;
|
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|
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let state = AliceState::BtcCancelled { state3, tx_cancel };
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let db_state = (&state).try_into()?;
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db.insert_latest_state(swap_id, db_state).await?;
|
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run_until(
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AliceState::BtcCancelled { state3, tx_cancel },
|
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state,
|
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is_target_state,
|
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event_loop_handle,
|
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bitcoin_wallet,
|
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monero_wallet,
|
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config,
|
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swap_id,
|
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db,
|
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)
|
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.await
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}
|
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@ -390,13 +522,17 @@ pub async fn run_until(
|
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// TODO(Franck): Review error handling
|
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match published_refund_tx {
|
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None => {
|
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run_until(
|
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AliceState::BtcPunishable { tx_refund, state3 },
|
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is_target_state,
|
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let state = AliceState::BtcPunishable { tx_refund, state3 };
|
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let db_state = (&state).try_into()?;
|
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db.insert_latest_state(swap_id, db_state).await?;
|
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swap(
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state,
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event_loop_handle,
|
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bitcoin_wallet.clone(),
|
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monero_wallet,
|
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config,
|
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swap_id,
|
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db,
|
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)
|
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.await
|
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}
|
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@ -409,13 +545,18 @@ pub async fn run_until(
|
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state3.S_b_bitcoin,
|
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)?;
|
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|
||||
let state = AliceState::BtcRefunded { spend_key, state3 };
|
||||
let db_state = (&state).try_into()?;
|
||||
db.insert_latest_state(swap_id, db_state).await?;
|
||||
run_until(
|
||||
AliceState::BtcRefunded { spend_key, state3 },
|
||||
state,
|
||||
is_target_state,
|
||||
event_loop_handle,
|
||||
bitcoin_wallet.clone(),
|
||||
monero_wallet,
|
||||
config,
|
||||
swap_id,
|
||||
db,
|
||||
)
|
||||
.await
|
||||
}
|
||||
@ -428,7 +569,10 @@ pub async fn run_until(
|
||||
.create_and_load_wallet_for_output(spend_key, view_key)
|
||||
.await?;
|
||||
|
||||
Ok((AliceState::XmrRefunded, event_loop_handle))
|
||||
let state = AliceState::XmrRefunded;
|
||||
let db_state = (&state).try_into()?;
|
||||
db.insert_latest_state(swap_id, db_state).await?;
|
||||
Ok((state, event_loop_handle))
|
||||
}
|
||||
AliceState::BtcPunishable { tx_refund, state3 } => {
|
||||
let signed_tx_punish = build_bitcoin_punish_transaction(
|
||||
@ -454,13 +598,18 @@ pub async fn run_until(
|
||||
|
||||
match select(punish_tx_finalised, refund_tx_seen).await {
|
||||
Either::Left(_) => {
|
||||
let state = AliceState::Punished;
|
||||
let db_state = (&state).try_into()?;
|
||||
db.insert_latest_state(swap_id, db_state).await?;
|
||||
run_until(
|
||||
AliceState::Punished,
|
||||
state,
|
||||
is_target_state,
|
||||
event_loop_handle,
|
||||
bitcoin_wallet.clone(),
|
||||
monero_wallet,
|
||||
config,
|
||||
swap_id,
|
||||
db,
|
||||
)
|
||||
.await
|
||||
}
|
||||
@ -472,14 +621,18 @@ pub async fn run_until(
|
||||
state3.a.clone(),
|
||||
state3.S_b_bitcoin,
|
||||
)?;
|
||||
|
||||
let state = AliceState::BtcRefunded { spend_key, state3 };
|
||||
let db_state = (&state).try_into()?;
|
||||
db.insert_latest_state(swap_id, db_state).await?;
|
||||
run_until(
|
||||
AliceState::BtcRefunded { spend_key, state3 },
|
||||
state,
|
||||
is_target_state,
|
||||
event_loop_handle,
|
||||
bitcoin_wallet.clone(),
|
||||
monero_wallet,
|
||||
config,
|
||||
swap_id,
|
||||
db,
|
||||
)
|
||||
.await
|
||||
}
|
||||
|
||||
@ -117,12 +117,17 @@ async fn main() -> Result<()> {
|
||||
let (mut event_loop, handle) =
|
||||
alice::event_loop::EventLoop::new(alice_transport, alice_behaviour, listen_addr)?;
|
||||
|
||||
let swap_id = Uuid::new_v4();
|
||||
info!("Swap id: {}", swap_id);
|
||||
|
||||
let swap = alice::swap::swap(
|
||||
alice_state,
|
||||
handle,
|
||||
bitcoin_wallet.clone(),
|
||||
monero_wallet.clone(),
|
||||
config,
|
||||
swap_id,
|
||||
db,
|
||||
);
|
||||
|
||||
let _event_loop = tokio::spawn(async move { event_loop.run().await });
|
||||
|
||||
@ -157,6 +157,8 @@ pub async fn alice_recover(
|
||||
}
|
||||
};
|
||||
}
|
||||
Alice::EncSignLearned { .. } => unimplemented!("recover method is deprecated"),
|
||||
Alice::BtcCancelled { .. } => unimplemented!("recover method is deprecated"),
|
||||
Alice::BtcRedeemable { redeem_tx, state } => {
|
||||
info!("Have the means to redeem the Bitcoin");
|
||||
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
use serde::{Deserialize, Serialize};
|
||||
use std::fmt::Display;
|
||||
use xmr_btc::{alice, bob, monero, serde::monero_private_key};
|
||||
use xmr_btc::{alice, bitcoin::EncryptedSignature, bob, monero, serde::monero_private_key};
|
||||
|
||||
#[allow(clippy::large_enum_variant)]
|
||||
#[derive(Clone, Debug, Deserialize, Serialize, PartialEq)]
|
||||
@ -15,10 +15,16 @@ pub enum Alice {
|
||||
Negotiated(alice::State3),
|
||||
BtcLocked(alice::State3),
|
||||
XmrLocked(alice::State3),
|
||||
// TODO(Franck): Delete this state as it is not used in alice::swap
|
||||
BtcRedeemable {
|
||||
state: alice::State3,
|
||||
redeem_tx: bitcoin::Transaction,
|
||||
},
|
||||
EncSignLearned {
|
||||
state: alice::State3,
|
||||
encrypted_signature: EncryptedSignature,
|
||||
},
|
||||
BtcCancelled(alice::State3),
|
||||
BtcPunishable(alice::State3),
|
||||
BtcRefunded {
|
||||
state: alice::State3,
|
||||
@ -67,9 +73,11 @@ impl Display for Alice {
|
||||
Alice::BtcLocked(_) => f.write_str("Bitcoin locked"),
|
||||
Alice::XmrLocked(_) => f.write_str("Monero locked"),
|
||||
Alice::BtcRedeemable { .. } => f.write_str("Bitcoin redeemable"),
|
||||
Alice::BtcCancelled(_) => f.write_str("Bitcoin cancel transaction published"),
|
||||
Alice::BtcPunishable(_) => f.write_str("Bitcoin punishable"),
|
||||
Alice::BtcRefunded { .. } => f.write_str("Monero refundable"),
|
||||
Alice::SwapComplete => f.write_str("Swap complete"),
|
||||
Alice::EncSignLearned { .. } => f.write_str("Encrypted signature learned"),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -77,12 +77,17 @@ async fn happy_path() {
|
||||
)
|
||||
.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_swarm_handle,
|
||||
alice_btc_wallet.clone(),
|
||||
alice_xmr_wallet.clone(),
|
||||
config,
|
||||
Uuid::new_v4(),
|
||||
alice_db,
|
||||
);
|
||||
|
||||
let _alice_swarm_fut = tokio::spawn(async move { alice_swarm_driver.run().await });
|
||||
@ -188,12 +193,17 @@ async fn alice_punishes_if_bob_never_acts_after_fund() {
|
||||
|
||||
let _bob_swarm_fut = tokio::spawn(async move { bob_swarm_driver.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_swarm_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_swarm.run().await });
|
||||
@ -311,6 +321,8 @@ async fn both_refund() {
|
||||
alice_btc_wallet.clone(),
|
||||
alice_xmr_wallet.clone(),
|
||||
Config::regtest(),
|
||||
todo!(),
|
||||
todo!(),
|
||||
);
|
||||
|
||||
tokio::spawn(async move { alice_swarm_driver.run().await });
|
||||
@ -331,6 +343,8 @@ async fn both_refund() {
|
||||
alice_btc_wallet.clone(),
|
||||
alice_xmr_wallet.clone(),
|
||||
Config::regtest(),
|
||||
todo!(),
|
||||
todo!(),
|
||||
)
|
||||
.await
|
||||
.unwrap();
|
||||
@ -408,8 +422,8 @@ async fn init_alice(
|
||||
xmr: xmr_to_swap,
|
||||
};
|
||||
|
||||
let rng = &mut OsRng;
|
||||
let (alice_state, alice_behaviour) = {
|
||||
let rng = &mut OsRng;
|
||||
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);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user