Git-Mirrors/xmr-btc-swap
1
0
Fork 0
mirror of https://github.com/comit-network/xmr-btc-swap.git synced 2024-12-24 15:09:35 -05:00
Code Issues Packages Projects Releases Wiki Activity

Avoid possible mix up between timelocks

Browse Source 
Introduce new type to ensure no mix up happens when ordering the fields
in function calls.
This commit is contained in:
Franck Royer 2021-02-15 12:19:43 +11:00
parent 9a321a4f09
commit b8a84aa34b
No known key found for this signature in database
GPG Key ID: A82ED75A8DFC50A4
12 changed files with 121 additions and 104 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
swap/src/bitcoin.rs
View File

@ -1,6 +1,5 @@
pub mod wallet;
mod timelocks;
mod cancel;
mod lock;
mod punish;
@ -9,18 +8,18 @@ mod refund;
mod timelocks;
pub use crate::bitcoin::{
cancel::TxCancel,
cancel::{CancelTimelock, PunishTimelock, TxCancel},
lock::TxLock,
punish::TxPunish,
redeem::TxRedeem,
refund::TxRefund,
timelocks::Timelock,
timelocks::{BlockHeight, ExpiredTimelocks},
};
pub use ::bitcoin::{util::amount::Amount, Address, Network, Transaction, Txid};
pub use ecdsa_fun::{adaptor::EncryptedSignature, fun::Scalar, Signature};
pub use wallet::Wallet;
use crate::{bitcoin::timelocks::BlockHeight, execution_params::ExecutionParams};
use crate::execution_params::ExecutionParams;
use ::bitcoin::{
hashes::{hex::ToHex, Hash},
secp256k1,
@ -35,7 +34,6 @@ use rand::{CryptoRng, RngCore};
use serde::{Deserialize, Serialize};
use sha2::Sha256;
use std::str::FromStr;
use timelocks::ExpiredTimelocks;
// TODO: Configurable tx-fee (note: parties have to agree prior to swapping)
// Current reasoning:
@ -272,8 +270,8 @@ where
pub async fn current_epoch<W>(
bitcoin_wallet: &W,
cancel_timelock: Timelock,
punish_timelock: Timelock,
cancel_timelock: CancelTimelock,
punish_timelock: PunishTimelock,
lock_tx_id: ::bitcoin::Txid,
) -> anyhow::Result<ExpiredTimelocks>
where
@ -296,7 +294,7 @@ where
pub async fn wait_for_cancel_timelock_to_expire<W>(
bitcoin_wallet: &W,
cancel_timelock: Timelock,
cancel_timelock: CancelTimelock,
lock_tx_id: ::bitcoin::Txid,
) -> Result<()>
where

58
swap/src/bitcoin/cancel.rs
View File

@ -1,13 +1,57 @@
use crate::bitcoin::{
build_shared_output_descriptor,
timelocks::{CancelTimelock, Timelock},
Address, Amount, PublicKey, Transaction, TxLock, TX_FEE,
build_shared_output_descriptor, Address, Amount, BlockHeight, PublicKey, Transaction, TxLock,
TX_FEE,
};
use ::bitcoin::{util::bip143::SigHashCache, OutPoint, SigHash, SigHashType, TxIn, TxOut, Txid};
use anyhow::Result;
use ecdsa_fun::Signature;
use miniscript::{Descriptor, NullCtx};
use std::collections::HashMap;
use serde::{Deserialize, Serialize};
use std::{collections::HashMap, ops::Add};
/// Represent a timelock, expressed in relative block height as defined in
/// [BIP68](https://github.com/bitcoin/bips/blob/master/bip-0068.mediawiki).
/// E.g. The timelock expires 10 blocks after the reference transaction is
/// mined.
#[derive(Debug, Copy, Clone, Serialize, Deserialize, Eq, PartialEq)]
#[serde(transparent)]
pub struct CancelTimelock(u32);
impl CancelTimelock {
pub const fn new(number_of_blocks: u32) -> Self {
Self(number_of_blocks)
}
}
impl Add<CancelTimelock> for BlockHeight {
type Output = BlockHeight;
fn add(self, rhs: CancelTimelock) -> Self::Output {
self + rhs.0
}
}
/// Represent a timelock, expressed in relative block height as defined in
/// [BIP68](https://github.com/bitcoin/bips/blob/master/bip-0068.mediawiki).
/// E.g. The timelock expires 10 blocks after the reference transaction is
/// mined.
#[derive(Debug, Copy, Clone, Serialize, Deserialize, Eq, PartialEq)]
#[serde(transparent)]
pub struct PunishTimelock(u32);
impl PunishTimelock {
pub const fn new(number_of_blocks: u32) -> Self {
Self(number_of_blocks)
}
}
impl Add<PunishTimelock> for BlockHeight {
type Output = BlockHeight;
fn add(self, rhs: PunishTimelock) -> Self::Output {
self + rhs.0
}
}
#[derive(Debug, Clone)]
pub struct TxCancel {
@ -28,7 +72,7 @@ impl TxCancel {
let tx_in = TxIn {
previous_output: tx_lock.as_outpoint(),
script_sig: Default::default(),
sequence: cancel_timelock.into(),
sequence: cancel_timelock.0,
witness: Vec::new(),
};
@ -110,14 +154,14 @@ impl TxCancel {
pub fn build_spend_transaction(
&self,
spend_address: &Address,
sequence: Option<Timelock>,
sequence: Option<PunishTimelock>,
) -> Transaction {
let previous_output = self.as_outpoint();
let tx_in = TxIn {
previous_output,
script_sig: Default::default(),
sequence: sequence.map(Into::into).unwrap_or(0xFFFF_FFFF),
sequence: sequence.map(|seq| seq.0).unwrap_or(0xFFFF_FFFF),
witness: Vec::new(),
};

5
swap/src/bitcoin/punish.rs
View File

@ -1,4 +1,4 @@
use crate::bitcoin::{timelocks::PunishTimelock, Address, PublicKey, Transaction, TxCancel};
use crate::bitcoin::{Address, PublicKey, PunishTimelock, Transaction, TxCancel};
use ::bitcoin::{util::bip143::SigHashCache, SigHash, SigHashType};
use anyhow::Result;
use ecdsa_fun::Signature;
@ -17,8 +17,7 @@ impl TxPunish {
punish_address: &Address,
punish_timelock: PunishTimelock,
) -> Self {
let tx_punish =
tx_cancel.build_spend_transaction(punish_address, Some(punish_timelock.into()));
let tx_punish = tx_cancel.build_spend_transaction(punish_address, Some(punish_timelock));
let digest = SigHashCache::new(&tx_punish).signature_hash(
0, // Only one input: cancel transaction

29
swap/src/bitcoin/timelocks.rs
View File

@ -1,26 +1,5 @@
use std::ops::Add;
use serde::{Deserialize, Serialize};
/// Represent a timelock, expressed in relative block height as defined in
/// [BIP68](https://github.com/bitcoin/bips/blob/master/bip-0068.mediawiki).
/// E.g. The timelock expires 10 blocks after the reference transaction is
/// mined.
#[derive(Debug, Copy, Clone, Serialize, Deserialize, Eq, PartialEq)]
#[serde(transparent)]
pub struct Timelock(u32);
impl Timelock {
pub const fn new(number_of_blocks: u32) -> Self {
Self(number_of_blocks)
}
}
impl From<Timelock> for u32 {
fn from(timelock: Timelock) -> Self {
timelock.0
}
}
use std::ops::Add;
/// Represent a block height, or block number, expressed in absolute block
/// count. E.g. The transaction was included in block #655123, 655123 block
@ -41,11 +20,11 @@ impl BlockHeight {
}
}
impl Add<Timelock> for BlockHeight {
impl Add<u32> for BlockHeight {
type Output = BlockHeight;
fn add(self, rhs: Timelock) -> Self::Output {
BlockHeight(self.0 + rhs.0)
fn add(self, rhs: u32) -> Self::Output {
BlockHeight(self.0 + rhs)
}
}

18
swap/src/execution_params.rs
View File

@ -1,4 +1,4 @@
use crate::bitcoin::Timelock;
use crate::bitcoin::{CancelTimelock, PunishTimelock};
use conquer_once::Lazy;
use std::time::Duration;
@ -8,8 +8,8 @@ pub struct ExecutionParams {
pub bitcoin_finality_confirmations: u32,
pub bitcoin_avg_block_time: Duration,
pub monero_finality_confirmations: u32,
pub bitcoin_cancel_timelock: Timelock,
pub bitcoin_punish_timelock: Timelock,
pub bitcoin_cancel_timelock: CancelTimelock,
pub bitcoin_punish_timelock: PunishTimelock,
}
pub trait GetExecutionParams {
@ -77,8 +77,8 @@ mod mainnet {
pub static MONERO_FINALITY_CONFIRMATIONS: u32 = 15;
// Set to 12 hours, arbitrary value to be reviewed properly
pub static BITCOIN_CANCEL_TIMELOCK: Timelock = Timelock::new(72);
pub static BITCOIN_PUNISH_TIMELOCK: Timelock = Timelock::new(72);
pub static BITCOIN_CANCEL_TIMELOCK: CancelTimelock = CancelTimelock::new(72);
pub static BITCOIN_PUNISH_TIMELOCK: PunishTimelock = PunishTimelock::new(72);
}
mod testnet {
@ -95,8 +95,8 @@ mod testnet {
pub static MONERO_FINALITY_CONFIRMATIONS: u32 = 5;
// This does not reflect recommended values for mainnet!
pub static BITCOIN_CANCEL_TIMELOCK: Timelock = Timelock::new(12);
pub static BITCOIN_PUNISH_TIMELOCK: Timelock = Timelock::new(6);
pub static BITCOIN_CANCEL_TIMELOCK: CancelTimelock = CancelTimelock::new(12);
pub static BITCOIN_PUNISH_TIMELOCK: PunishTimelock = PunishTimelock::new(6);
}
mod regtest {
@ -111,7 +111,7 @@ mod regtest {
pub static MONERO_FINALITY_CONFIRMATIONS: u32 = 1;
pub static BITCOIN_CANCEL_TIMELOCK: Timelock = Timelock::new(100);
pub static BITCOIN_CANCEL_TIMELOCK: CancelTimelock = CancelTimelock::new(100);
pub static BITCOIN_PUNISH_TIMELOCK: Timelock = Timelock::new(50);
pub static BITCOIN_PUNISH_TIMELOCK: PunishTimelock = PunishTimelock::new(50);
}

35
swap/src/protocol/alice/state.rs
View File

@ -1,10 +1,9 @@
use crate::{
bitcoin,
bitcoin::{
current_epoch,
timelocks::{ExpiredTimelocks, Timelock},
wait_for_cancel_timelock_to_expire, GetBlockHeight, TransactionBlockHeight, TxCancel,
TxRefund, WatchForRawTransaction,
current_epoch, wait_for_cancel_timelock_to_expire, CancelTimelock, ExpiredTimelocks,
GetBlockHeight, PunishTimelock, TransactionBlockHeight, TxCancel, TxRefund,
WatchForRawTransaction,
},
execution_params::ExecutionParams,
monero,
@ -90,8 +89,8 @@ pub struct State0 {
#[serde(with = "::bitcoin::util::amount::serde::as_sat")]
pub btc: bitcoin::Amount,
pub xmr: monero::Amount,
pub cancel_timelock: Timelock,
pub punish_timelock: Timelock,
pub cancel_timelock: CancelTimelock,
pub punish_timelock: PunishTimelock,
pub redeem_address: bitcoin::Address,
pub punish_address: bitcoin::Address,
}
@ -172,8 +171,8 @@ pub struct State1 {
#[serde(with = "::bitcoin::util::amount::serde::as_sat")]
btc: bitcoin::Amount,
xmr: monero::Amount,
cancel_timelock: Timelock,
punish_timelock: Timelock,
cancel_timelock: CancelTimelock,
punish_timelock: PunishTimelock,
refund_address: bitcoin::Address,
redeem_address: bitcoin::Address,
punish_address: bitcoin::Address,
@ -225,8 +224,8 @@ pub struct State2 {
#[serde(with = "::bitcoin::util::amount::serde::as_sat")]
btc: bitcoin::Amount,
xmr: monero::Amount,
cancel_timelock: Timelock,
punish_timelock: Timelock,
cancel_timelock: CancelTimelock,
punish_timelock: PunishTimelock,
refund_address: bitcoin::Address,
redeem_address: bitcoin::Address,
punish_address: bitcoin::Address,
@ -295,8 +294,8 @@ pub struct State3 {
#[serde(with = "::bitcoin::util::amount::serde::as_sat")]
pub btc: bitcoin::Amount,
pub xmr: monero::Amount,
pub cancel_timelock: Timelock,
pub punish_timelock: Timelock,
pub cancel_timelock: CancelTimelock,
pub punish_timelock: PunishTimelock,
pub refund_address: bitcoin::Address,
pub redeem_address: bitcoin::Address,
pub punish_address: bitcoin::Address,
@ -341,8 +340,8 @@ pub struct State4 {
S_b_bitcoin: bitcoin::PublicKey,
v: monero::PrivateViewKey,
xmr: monero::Amount,
cancel_timelock: Timelock,
punish_timelock: Timelock,
cancel_timelock: CancelTimelock,
punish_timelock: PunishTimelock,
refund_address: bitcoin::Address,
redeem_address: bitcoin::Address,
punish_address: bitcoin::Address,
@ -433,8 +432,8 @@ pub struct State5 {
S_b_monero: monero::PublicKey,
S_b_bitcoin: bitcoin::PublicKey,
v: monero::PrivateViewKey,
cancel_timelock: Timelock,
punish_timelock: Timelock,
cancel_timelock: CancelTimelock,
punish_timelock: PunishTimelock,
refund_address: bitcoin::Address,
redeem_address: bitcoin::Address,
punish_address: bitcoin::Address,
@ -483,8 +482,8 @@ pub struct State6 {
S_b_monero: monero::PublicKey,
S_b_bitcoin: bitcoin::PublicKey,
v: monero::PrivateViewKey,
cancel_timelock: Timelock,
punish_timelock: Timelock,
cancel_timelock: CancelTimelock,
punish_timelock: PunishTimelock,
refund_address: bitcoin::Address,
redeem_address: bitcoin::Address,
punish_address: bitcoin::Address,

13
swap/src/protocol/alice/steps.rs
View File

@ -1,9 +1,8 @@
use crate::{
bitcoin,
bitcoin::{
poll_until_block_height_is_gte,
timelocks::{BlockHeight, Timelock},
BroadcastSignedTransaction, EncryptedSignature, GetBlockHeight, GetRawTransaction,
poll_until_block_height_is_gte, BlockHeight, BroadcastSignedTransaction, CancelTimelock,
EncryptedSignature, GetBlockHeight, GetRawTransaction, PunishTimelock,
TransactionBlockHeight, TxCancel, TxLock, TxRefund, WaitForTransactionFinality,
WatchForRawTransaction,
},
@ -151,7 +150,7 @@ pub async fn publish_cancel_transaction<W>(
tx_lock: TxLock,
a: bitcoin::SecretKey,
B: bitcoin::PublicKey,
cancel_timelock: Timelock,
cancel_timelock: CancelTimelock,
tx_cancel_sig_bob: bitcoin::Signature,
bitcoin_wallet: Arc<W>,
) -> Result<bitcoin::TxCancel>
@ -198,7 +197,7 @@ where
pub async fn wait_for_bitcoin_refund<W>(
tx_cancel: &TxCancel,
cancel_tx_height: BlockHeight,
punish_timelock: Timelock,
punish_timelock: PunishTimelock,
refund_address: &bitcoin::Address,
bitcoin_wallet: Arc<W>,
) -> Result<(bitcoin::TxRefund, Option<bitcoin::Transaction>)>
@ -250,9 +249,9 @@ pub fn extract_monero_private_key(
pub fn build_bitcoin_punish_transaction(
tx_lock: &TxLock,
cancel_timelock: Timelock,
cancel_timelock: CancelTimelock,
punish_address: &bitcoin::Address,
punish_timelock: Timelock,
punish_timelock: PunishTimelock,
tx_punish_sig_bob: bitcoin::Signature,
a: bitcoin::SecretKey,
B: bitcoin::PublicKey,

2
swap/src/protocol/alice/swap.rs
View File

@ -3,7 +3,7 @@
use crate::{
bitcoin,
bitcoin::{
timelocks::ExpiredTimelocks, TransactionBlockHeight, WaitForTransactionFinality,
ExpiredTimelocks, TransactionBlockHeight, WaitForTransactionFinality,
WatchForRawTransaction,
},
database,

2
swap/src/protocol/bob/cancel.rs
View File

@ -1,5 +1,5 @@
use crate::{
bitcoin::{timelocks::ExpiredTimelocks, Txid, Wallet},
bitcoin::{ExpiredTimelocks, Txid, Wallet},
database::{Database, Swap},
protocol::bob::BobState,
};

37
swap/src/protocol/bob/state.rs
View File

@ -1,10 +1,9 @@
use crate::{
bitcoin::{
self, current_epoch,
timelocks::{ExpiredTimelocks, Timelock},
wait_for_cancel_timelock_to_expire, BroadcastSignedTransaction, BuildTxLockPsbt,
GetBlockHeight, GetNetwork, GetRawTransaction, Transaction, TransactionBlockHeight,
TxCancel, Txid, WatchForRawTransaction,
self, current_epoch, wait_for_cancel_timelock_to_expire, BroadcastSignedTransaction,
BuildTxLockPsbt, CancelTimelock, ExpiredTimelocks, GetBlockHeight, GetNetwork,
GetRawTransaction, PunishTimelock, Transaction, TransactionBlockHeight, TxCancel, Txid,
WatchForRawTransaction,
},
execution_params::ExecutionParams,
monero,
@ -82,8 +81,8 @@ pub struct State0 {
#[serde(with = "::bitcoin::util::amount::serde::as_sat")]
btc: bitcoin::Amount,
xmr: monero::Amount,
cancel_timelock: Timelock,
punish_timelock: Timelock,
cancel_timelock: CancelTimelock,
punish_timelock: PunishTimelock,
refund_address: bitcoin::Address,
min_monero_confirmations: u32,
}
@ -93,8 +92,8 @@ impl State0 {
rng: &mut R,
btc: bitcoin::Amount,
xmr: monero::Amount,
cancel_timelock: Timelock,
punish_timelock: Timelock,
cancel_timelock: CancelTimelock,
punish_timelock: PunishTimelock,
refund_address: bitcoin::Address,
min_monero_confirmations: u32,
) -> Self {
@ -177,8 +176,8 @@ pub struct State1 {
#[serde(with = "::bitcoin::util::amount::serde::as_sat")]
btc: bitcoin::Amount,
xmr: monero::Amount,
cancel_timelock: Timelock,
punish_timelock: Timelock,
cancel_timelock: CancelTimelock,
punish_timelock: PunishTimelock,
refund_address: bitcoin::Address,
redeem_address: bitcoin::Address,
punish_address: bitcoin::Address,
@ -238,8 +237,8 @@ pub struct State2 {
#[serde(with = "::bitcoin::util::amount::serde::as_sat")]
btc: bitcoin::Amount,
pub xmr: monero::Amount,
pub cancel_timelock: Timelock,
pub punish_timelock: Timelock,
pub cancel_timelock: CancelTimelock,
pub punish_timelock: PunishTimelock,
pub refund_address: bitcoin::Address,
pub redeem_address: bitcoin::Address,
pub punish_address: bitcoin::Address,
@ -307,8 +306,8 @@ pub struct State3 {
#[serde(with = "::bitcoin::util::amount::serde::as_sat")]
btc: bitcoin::Amount,
xmr: monero::Amount,
pub cancel_timelock: Timelock,
punish_timelock: Timelock,
pub cancel_timelock: CancelTimelock,
punish_timelock: PunishTimelock,
pub refund_address: bitcoin::Address,
redeem_address: bitcoin::Address,
punish_address: bitcoin::Address,
@ -427,8 +426,8 @@ pub struct State4 {
#[serde(with = "::bitcoin::util::amount::serde::as_sat")]
btc: bitcoin::Amount,
xmr: monero::Amount,
pub cancel_timelock: Timelock,
punish_timelock: Timelock,
pub cancel_timelock: CancelTimelock,
punish_timelock: PunishTimelock,
pub refund_address: bitcoin::Address,
pub redeem_address: bitcoin::Address,
punish_address: bitcoin::Address,
@ -614,8 +613,8 @@ pub struct State5 {
#[serde(with = "::bitcoin::util::amount::serde::as_sat")]
btc: bitcoin::Amount,
xmr: monero::Amount,
cancel_timelock: Timelock,
punish_timelock: Timelock,
cancel_timelock: CancelTimelock,
punish_timelock: PunishTimelock,
refund_address: bitcoin::Address,
pub redeem_address: bitcoin::Address,
punish_address: bitcoin::Address,

2
swap/src/protocol/bob/swap.rs
View File

@ -1,6 +1,6 @@
use crate::{
bitcoin,
bitcoin::timelocks::ExpiredTimelocks,
bitcoin::ExpiredTimelocks,
database::{Database, Swap},
execution_params::ExecutionParams,
monero,

10
swap/tests/testutils/mod.rs
View File

@ -7,7 +7,7 @@ use monero_harness::{image, Monero};
use std::{path::PathBuf, sync::Arc};
use swap::{
bitcoin,
bitcoin::Timelock,
bitcoin::{CancelTimelock, PunishTimelock},
database::Database,
execution_params,
execution_params::{ExecutionParams, GetExecutionParams},
@ -484,7 +484,7 @@ pub struct SlowCancelConfig;
impl GetExecutionParams for SlowCancelConfig {
fn get_execution_params() -> ExecutionParams {
ExecutionParams {
bitcoin_cancel_timelock: Timelock::new(180),
bitcoin_cancel_timelock: CancelTimelock::new(180),
..execution_params::Regtest::get_execution_params()
}
}
@ -495,7 +495,7 @@ pub struct FastCancelConfig;
impl GetExecutionParams for FastCancelConfig {
fn get_execution_params() -> ExecutionParams {
ExecutionParams {
bitcoin_cancel_timelock: Timelock::new(1),
bitcoin_cancel_timelock: CancelTimelock::new(1),
..execution_params::Regtest::get_execution_params()
}
}
@ -506,8 +506,8 @@ pub struct FastPunishConfig;
impl GetExecutionParams for FastPunishConfig {
fn get_execution_params() -> ExecutionParams {
ExecutionParams {
bitcoin_cancel_timelock: Timelock::new(1),
bitcoin_punish_timelock: Timelock::new(1),
bitcoin_cancel_timelock: CancelTimelock::new(1),
bitcoin_punish_timelock: PunishTimelock::new(1),
..execution_params::Regtest::get_execution_params()
}
}