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Expand lockorder testing to look at mutexes, not specific instances #1420

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merged 4 commits into from
Jul 21, 2022
Merged

Expand lockorder testing to look at mutexes, not specific instances #1420

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0627c0c
Fix some test theoretical lock inversions
TheBlueMatt Apr 12, 2022
625cda1
Construct all ChannelMonitor mutexes in the same function
TheBlueMatt Jul 15, 2022
6f2c008
Expand lockorder testing to look at mutexes, not specific instances
TheBlueMatt Apr 12, 2022
ff20203
Swap `HashSet`s with custom `Hash` in debug_sync for `HashMap`s
TheBlueMatt Jul 19, 2022
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171 changes: 87 additions & 84 deletions lightning/src/chain/channelmonitor.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -965,6 +965,13 @@ impl<Signer: Sign> Writeable for ChannelMonitorImpl<Signer> {
}

impl<Signer: Sign> ChannelMonitor<Signer> {
/// For lockorder enforcement purposes, we need to have a single site which constructs the
/// `inner` mutex, otherwise cases where we lock two monitors at the same time (eg in our
/// PartialEq implementation) we may decide a lockorder violation has occurred.
fn from_impl(imp: ChannelMonitorImpl<Signer>) -> Self {
ChannelMonitor { inner: Mutex::new(imp) }
}

pub(crate) fn new(secp_ctx: Secp256k1<secp256k1::All>, keys: Signer, shutdown_script: Option<Script>,
on_counterparty_tx_csv: u16, destination_script: &Script, funding_info: (OutPoint, Script),
channel_parameters: &ChannelTransactionParameters,
Expand Down Expand Up @@ -1012,60 +1019,58 @@ impl<Signer: Sign> ChannelMonitor<Signer> {
let mut outputs_to_watch = HashMap::new();
outputs_to_watch.insert(funding_info.0.txid, vec![(funding_info.0.index as u32, funding_info.1.clone())]);

ChannelMonitor {
inner: Mutex::new(ChannelMonitorImpl {
latest_update_id: 0,
commitment_transaction_number_obscure_factor,
Self::from_impl(ChannelMonitorImpl {
latest_update_id: 0,
commitment_transaction_number_obscure_factor,

destination_script: destination_script.clone(),
broadcasted_holder_revokable_script: None,
counterparty_payment_script,
shutdown_script,
destination_script: destination_script.clone(),
broadcasted_holder_revokable_script: None,
counterparty_payment_script,
shutdown_script,

channel_keys_id,
holder_revocation_basepoint,
funding_info,
current_counterparty_commitment_txid: None,
prev_counterparty_commitment_txid: None,
channel_keys_id,
holder_revocation_basepoint,
funding_info,
current_counterparty_commitment_txid: None,
prev_counterparty_commitment_txid: None,

counterparty_commitment_params,
funding_redeemscript,
channel_value_satoshis,
their_cur_per_commitment_points: None,
counterparty_commitment_params,
funding_redeemscript,
channel_value_satoshis,
their_cur_per_commitment_points: None,

on_holder_tx_csv: counterparty_channel_parameters.selected_contest_delay,
on_holder_tx_csv: counterparty_channel_parameters.selected_contest_delay,

commitment_secrets: CounterpartyCommitmentSecrets::new(),
counterparty_claimable_outpoints: HashMap::new(),
counterparty_commitment_txn_on_chain: HashMap::new(),
counterparty_hash_commitment_number: HashMap::new(),
commitment_secrets: CounterpartyCommitmentSecrets::new(),
counterparty_claimable_outpoints: HashMap::new(),
counterparty_commitment_txn_on_chain: HashMap::new(),
counterparty_hash_commitment_number: HashMap::new(),

prev_holder_signed_commitment_tx: None,
current_holder_commitment_tx: holder_commitment_tx,
current_counterparty_commitment_number: 1 << 48,
current_holder_commitment_number,
prev_holder_signed_commitment_tx: None,
current_holder_commitment_tx: holder_commitment_tx,
current_counterparty_commitment_number: 1 << 48,
current_holder_commitment_number,

payment_preimages: HashMap::new(),
pending_monitor_events: Vec::new(),
pending_events: Vec::new(),
payment_preimages: HashMap::new(),
pending_monitor_events: Vec::new(),
pending_events: Vec::new(),

onchain_events_awaiting_threshold_conf: Vec::new(),
outputs_to_watch,
onchain_events_awaiting_threshold_conf: Vec::new(),
outputs_to_watch,

onchain_tx_handler,
onchain_tx_handler,

lockdown_from_offchain: false,
holder_tx_signed: false,
funding_spend_seen: false,
funding_spend_confirmed: None,
htlcs_resolved_on_chain: Vec::new(),
lockdown_from_offchain: false,
holder_tx_signed: false,
funding_spend_seen: false,
funding_spend_confirmed: None,
htlcs_resolved_on_chain: Vec::new(),

best_block,
counterparty_node_id: Some(counterparty_node_id),
best_block,
counterparty_node_id: Some(counterparty_node_id),

secp_ctx,
}),
}
secp_ctx,
})
}

#[cfg(test)]
Expand Down Expand Up @@ -3361,60 +3366,58 @@ impl<'a, Signer: Sign, K: KeysInterface<Signer = Signer>> ReadableArgs<&'a K>
let mut secp_ctx = Secp256k1::new();
secp_ctx.seeded_randomize(&keys_manager.get_secure_random_bytes());

Ok((best_block.block_hash(), ChannelMonitor {
inner: Mutex::new(ChannelMonitorImpl {
latest_update_id,
commitment_transaction_number_obscure_factor,
Ok((best_block.block_hash(), ChannelMonitor::from_impl(ChannelMonitorImpl {
latest_update_id,
commitment_transaction_number_obscure_factor,

destination_script,
broadcasted_holder_revokable_script,
counterparty_payment_script,
shutdown_script,
destination_script,
broadcasted_holder_revokable_script,
counterparty_payment_script,
shutdown_script,

channel_keys_id,
holder_revocation_basepoint,
funding_info,
current_counterparty_commitment_txid,
prev_counterparty_commitment_txid,
channel_keys_id,
holder_revocation_basepoint,
funding_info,
current_counterparty_commitment_txid,
prev_counterparty_commitment_txid,

counterparty_commitment_params,
funding_redeemscript,
channel_value_satoshis,
their_cur_per_commitment_points,
counterparty_commitment_params,
funding_redeemscript,
channel_value_satoshis,
their_cur_per_commitment_points,

on_holder_tx_csv,
on_holder_tx_csv,

commitment_secrets,
counterparty_claimable_outpoints,
counterparty_commitment_txn_on_chain,
counterparty_hash_commitment_number,
commitment_secrets,
counterparty_claimable_outpoints,
counterparty_commitment_txn_on_chain,
counterparty_hash_commitment_number,

prev_holder_signed_commitment_tx,
current_holder_commitment_tx,
current_counterparty_commitment_number,
current_holder_commitment_number,
prev_holder_signed_commitment_tx,
current_holder_commitment_tx,
current_counterparty_commitment_number,
current_holder_commitment_number,

payment_preimages,
pending_monitor_events: pending_monitor_events.unwrap(),
pending_events,
payment_preimages,
pending_monitor_events: pending_monitor_events.unwrap(),
pending_events,

onchain_events_awaiting_threshold_conf,
outputs_to_watch,
onchain_events_awaiting_threshold_conf,
outputs_to_watch,

onchain_tx_handler,
onchain_tx_handler,

lockdown_from_offchain,
holder_tx_signed,
funding_spend_seen: funding_spend_seen.unwrap(),
funding_spend_confirmed,
htlcs_resolved_on_chain: htlcs_resolved_on_chain.unwrap(),
lockdown_from_offchain,
holder_tx_signed,
funding_spend_seen: funding_spend_seen.unwrap(),
funding_spend_confirmed,
htlcs_resolved_on_chain: htlcs_resolved_on_chain.unwrap(),

best_block,
counterparty_node_id,
best_block,
counterparty_node_id,

secp_ctx,
}),
}))
secp_ctx,
})))
}
}

Expand Down
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