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Confirm delivery detects when more than expected messages are confirmed (#1039)

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* confirm delivery detects when more than expected messages are confirmed

* fix benchmarks compilation
This commit is contained in:
Svyatoslav Nikolsky
2021-07-05 09:38:23 +03:00
committed by Bastian Köcher
parent dfdd541bc9
commit 2e50bf8fb1
3 changed files with 92 additions and 10 deletions
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bridges/modules/messages/src/lib.rs
+49 -2
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@@ -197,7 +197,10 @@ decl_error! {
/// The message someone is trying to work with (i.e. increase fee) is already-delivered.
MessageIsAlreadyDelivered,
/// The message someone is trying to work with (i.e. increase fee) is not yet sent.
MessageIsNotYetSent
MessageIsNotYetSent,
/// The number of actually confirmed messages is going to be larger than the number of messages in the proof.
/// This may mean that this or bridged chain storage is corrupted.
TryingToConfirmMoreMessagesThanExpected,
}
}
@@ -647,9 +650,23 @@ decl_module! {
let mut lane = outbound_lane::<T, I>(lane_id);
let mut relayers_rewards: RelayersRewards<_, T::OutboundMessageFee> = RelayersRewards::new();
let last_delivered_nonce = lane_data.last_delivered_nonce();
let confirmed_messages = match lane.confirm_delivery(last_delivered_nonce, &lane_data.relayers) {
let confirmed_messages = match lane.confirm_delivery(
relayers_state.total_messages,
last_delivered_nonce,
&lane_data.relayers,
) {
ReceivalConfirmationResult::ConfirmedMessages(confirmed_messages) => Some(confirmed_messages),
ReceivalConfirmationResult::NoNewConfirmations => None,
ReceivalConfirmationResult::TryingToConfirmMoreMessagesThanExpected(to_confirm_messages_count) => {
log::trace!(
target: "runtime::bridge-messages",
"Messages delivery proof contains too many messages to confirm: {} vs declared {}",
to_confirm_messages_count,
relayers_state.total_messages,
);
fail!(Error::<T, I>::TryingToConfirmMoreMessagesThanExpected);
},
error => {
log::trace!(
target: "runtime::bridge-messages",
@@ -660,6 +677,7 @@ decl_module! {
fail!(Error::<T, I>::InvalidUnrewardedRelayers);
},
};
if let Some(confirmed_messages) = confirmed_messages {
// handle messages delivery confirmation
let preliminary_callback_overhead = relayers_state.total_messages.saturating_mul(
@@ -2051,4 +2069,33 @@ mod tests {
confirm_3_messages_delivery()
});
}
#[test]
fn receive_messages_delivery_proof_rejects_proof_if_trying_to_confirm_more_messages_than_expected() {
run_test(|| {
// send message first to be able to check that delivery_proof fails later
send_regular_message();
// 1) InboundLaneData declares that the `last_confirmed_nonce` is 1;
// 2) InboundLaneData has no entries => `InboundLaneData::last_delivered_nonce()`
// returns `last_confirmed_nonce`;
// 3) it means that we're going to confirm delivery of messages 1..=1;
// 4) so the number of declared messages (see `UnrewardedRelayersState`) is `0` and
// numer of actually confirmed messages is `1`.
assert_noop!(
Pallet::<TestRuntime>::receive_messages_delivery_proof(
Origin::signed(1),
TestMessagesDeliveryProof(Ok((
TEST_LANE_ID,
InboundLaneData {
last_confirmed_nonce: 1,
relayers: Default::default(),
},
))),
UnrewardedRelayersState::default(),
),
Error::<TestRuntime, DefaultInstance>::TryingToConfirmMoreMessagesThanExpected,
);
});
}
}