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Parse blinded onion errors in tests only.

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So we can make sure they're encoded properly.
This commit is contained in:
Valentine Wallace 2023-10-26 13:09:48 -04:00
parent 7f765a39bc
commit b70525df28
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1 changed files with 15 additions and 2 deletions
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17
lightning/src/ln/onion_utils.rs
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@ -502,8 +502,21 @@ pub(super) fn process_onion_failure<T: secp256k1::Signing, L: Deref>(
Some(hop) => hop,
None => {
// The failing hop is within a multi-hop blinded path.
error_code_ret = Some(BADONION | PERM | 24); // invalid_onion_blinding
error_packet_ret = Some(vec![0; 32]);
#[cfg(not(test))] {
error_code_ret = Some(BADONION | PERM | 24); // invalid_onion_blinding
error_packet_ret = Some(vec![0; 32]);
}
#[cfg(test)] {
// Actually parse the onion error data in tests so we can check that blinded hops fail
// back correctly.
let err_packet = decrypt_onion_error_packet(
&mut encrypted_packet, shared_secret
).unwrap();
error_code_ret =
Some(u16::from_be_bytes(err_packet.failuremsg.get(0..2).unwrap().try_into().unwrap()));
error_packet_ret = Some(err_packet.failuremsg[2..].to_vec());
}
res = Some(FailureLearnings {
network_update: None, short_channel_id: None, payment_failed_permanently: false
});