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Punish Bob if t2 is reached

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This commit is contained in:
Franck Royer 2020-11-25 12:01:42 +11:00 committed by rishflab
parent 8ff1824126
commit 6437b529eb
1 changed files with 55 additions and 3 deletions
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58
swap/src/alice.rs
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@ -87,7 +87,13 @@ pub enum AliceState {
published_refund_tx: ::bitcoin::Transaction,
state3: State3,
},
BtcPunishable,
BtcPunishable {
state3: State3,
},
BtcPunished {
punished_tx_id: bitcoin::Txid,
state3: State3,
},
XmrRefunded,
WaitingToCancel {
state3: State3,
@ -457,7 +463,7 @@ where
match select(reached_t2, seen_refund_tx).await {
Either::Left(_) => {
simple_swap(
AliceState::BtcPunishable,
AliceState::BtcPunishable { state3 },
rng,
swarm,
db,
@ -512,7 +518,53 @@ where
Ok(AliceState::XmrRefunded)
}
AliceState::BtcPunishable => todo!(),
AliceState::BtcPunished {
punished_tx_id,
state3,
} => {
// TODO(Franck): Watch for Btc refund in mempool and punish
// transaction being mined.
todo!()
}
AliceState::BtcPunishable { state3 } => {
let tx_cancel = bitcoin::TxCancel::new(
&state3.tx_lock,
state3.refund_timelock,
state3.a.public(),
state3.B.clone(),
);
let tx_punish =
bitcoin::TxPunish::new(&tx_cancel, &state3.punish_address, state3.punish_timelock);
let punished_tx_id = tx_punish.txid();
let sig_a = state3.a.sign(tx_punish.digest());
let sig_b = state3.tx_punish_sig_bob.clone();
let signed_tx_punish = tx_punish
.add_signatures(
&tx_cancel,
(state3.a.public(), sig_a),
(state3.B.clone(), sig_b),
)
.expect("sig_{a,b} to be valid signatures for tx_cancel");
let _ = bitcoin_wallet
.broadcast_signed_transaction(signed_tx_punish)
.await?;
simple_swap(
AliceState::BtcPunished {
punished_tx_id,
state3,
},
rng,
swarm,
db,
bitcoin_wallet.clone(),
monero_wallet,
)
.await
}
AliceState::XmrRefunded => Ok(AliceState::XmrRefunded),
AliceState::BtcRedeemed => Ok(AliceState::BtcRedeemed),
AliceState::Punished => Ok(AliceState::Punished),