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htlcswitch/hop: use InvalidOnionVersion for replayed packets

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The link will send an update_fail_malformed_htlc, so we need to set
the BADONION bit. Since there isn't a replay-specific error, we
set the failure code to InvalidOnionVersion which has the BADONION bit.
This commit is contained in:
eugene 2023-08-29 11:56:44 -04:00 committed by Olaoluwa Osuntokun
parent 3c605dbff5
commit 75406d177b
2 changed files with 9 additions and 2 deletions
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9
htlcswitch/hop/iterator.go
View File

@ -363,7 +363,14 @@ func (p *OnionProcessor) DecodeHopIterators(id []byte,
if replays.Contains(uint16(i)) {
log.Errorf("unable to process onion packet: %v",
sphinx.ErrReplayedPacket)
resp.FailCode = lnwire.CodeTemporaryChannelFailure
// We set FailCode to CodeInvalidOnionVersion even
// though the ephemeral key isn't the problem. We need
// to set the BADONION bit since we're sending back a
// malformed packet, but as there isn't a specific
// failure code for replays, we reuse one of the
// failure codes that has BADONION.
resp.FailCode = lnwire.CodeInvalidOnionVersion
continue
}

2
itest/lnd_misc_test.go
View File

@ -219,7 +219,7 @@ func testSphinxReplayPersistence(ht *lntest.HarnessTest) {
// Assert that Fred receives the expected failure after Carol sent a
// duplicate packet that fails due to sphinx replay detection.
ht.AssertPaymentStatusFromStream(payStream, lnrpc.Payment_FAILED)
ht.AssertLastHTLCError(fred, lnrpc.Failure_INVALID_ONION_KEY)
ht.AssertLastHTLCError(fred, lnrpc.Failure_INVALID_ONION_VERSION)
// Since the payment failed, the balance should still be left
// unaltered.