You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
99 lines
3.4 KiB
99 lines
3.4 KiB
use crate::bitcoin::{EncryptedSignature, Signature};
|
|
use crate::network::request_response::BUF_SIZE;
|
|
use crate::protocol::alice::{State0, State3};
|
|
use crate::protocol::bob::{Message0, Message2, Message4};
|
|
use crate::{bitcoin, monero};
|
|
use anyhow::{Context, Error};
|
|
use libp2p::PeerId;
|
|
use libp2p_async_await::BehaviourOutEvent;
|
|
use serde::{Deserialize, Serialize};
|
|
use sigma_fun::ext::dl_secp256k1_ed25519_eq::CrossCurveDLEQProof;
|
|
|
|
#[derive(Clone, Debug, Serialize, Deserialize)]
|
|
pub struct Message1 {
|
|
pub(crate) A: bitcoin::PublicKey,
|
|
pub(crate) S_a_monero: monero::PublicKey,
|
|
pub(crate) S_a_bitcoin: bitcoin::PublicKey,
|
|
pub(crate) dleq_proof_s_a: CrossCurveDLEQProof,
|
|
pub(crate) v_a: monero::PrivateViewKey,
|
|
pub(crate) redeem_address: bitcoin::Address,
|
|
pub(crate) punish_address: bitcoin::Address,
|
|
}
|
|
|
|
#[derive(Clone, Debug, Serialize, Deserialize)]
|
|
pub struct Message3 {
|
|
pub(crate) tx_cancel_sig: Signature,
|
|
pub(crate) tx_refund_encsig: EncryptedSignature,
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub enum OutEvent {
|
|
Done { bob_peer_id: PeerId, state3: State3 },
|
|
Failure(Error),
|
|
}
|
|
|
|
impl From<BehaviourOutEvent<(PeerId, State3), (), Error>> for OutEvent {
|
|
fn from(event: BehaviourOutEvent<(PeerId, State3), (), Error>) -> Self {
|
|
match event {
|
|
BehaviourOutEvent::Inbound(_, Ok((bob_peer_id, state3))) => OutEvent::Done {
|
|
bob_peer_id,
|
|
state3,
|
|
},
|
|
BehaviourOutEvent::Inbound(_, Err(e)) => OutEvent::Failure(e),
|
|
BehaviourOutEvent::Outbound(..) => unreachable!("Alice only supports inbound"),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(libp2p::NetworkBehaviour)]
|
|
#[behaviour(out_event = "OutEvent", event_process = false)]
|
|
pub struct Behaviour {
|
|
inner: libp2p_async_await::Behaviour<(PeerId, State3), (), anyhow::Error>,
|
|
}
|
|
|
|
impl Default for Behaviour {
|
|
fn default() -> Self {
|
|
Self {
|
|
inner: libp2p_async_await::Behaviour::new(b"/comit/xmr/btc/execution_setup/1.0.0"),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Behaviour {
|
|
pub fn run(&mut self, bob: PeerId, state0: State0) {
|
|
self.inner
|
|
.do_protocol_listener(bob, move |mut substream| async move {
|
|
let message0 =
|
|
serde_cbor::from_slice::<Message0>(&substream.read_message(BUF_SIZE).await?)
|
|
.context("Failed to deserialize message0")?;
|
|
let state1 = state0.receive(message0)?;
|
|
|
|
substream
|
|
.write_message(
|
|
&serde_cbor::to_vec(&state1.next_message())
|
|
.context("Failed to serialize message1")?,
|
|
)
|
|
.await?;
|
|
|
|
let message2 =
|
|
serde_cbor::from_slice::<Message2>(&substream.read_message(BUF_SIZE).await?)
|
|
.context("Failed to deserialize message2")?;
|
|
let state2 = state1.receive(message2);
|
|
|
|
substream
|
|
.write_message(
|
|
&serde_cbor::to_vec(&state2.next_message())
|
|
.context("Failed to serialize message3")?,
|
|
)
|
|
.await?;
|
|
|
|
let message4 =
|
|
serde_cbor::from_slice::<Message4>(&substream.read_message(BUF_SIZE).await?)
|
|
.context("Failed to deserialize message4")?;
|
|
let state3 = state2.receive(message4)?;
|
|
|
|
Ok((bob, state3))
|
|
})
|
|
}
|
|
}
|