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Only allow creating 1-hop blinded paths.

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Useful until forwarding and receiving to multi-hop blinded paths is supported.
This commit is contained in:
Valentine Wallace 2023-09-10 00:42:18 -04:00
parent 3e377a1d2f
commit ebdc4ae80a
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GPG key ID: FD3E106A2CE099B4
2 changed files with 18 additions and 7 deletions
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15
lightning/src/blinded_path/mod.rs
View file

@ -76,6 +76,19 @@ impl BlindedPath {
})
}
/// Create a one-hop blinded path for a payment.
pub fn one_hop_for_payment<ES: EntropySource, T: secp256k1::Signing + secp256k1::Verification>(
payee_node_id: PublicKey, payee_tlvs: payment::ReceiveTlvs, entropy_source: &ES,
secp_ctx: &Secp256k1<T>
) -> Result<(BlindedPayInfo, Self), ()> {
// This value is not considered in pathfinding for 1-hop blinded paths, because it's intended to
// be in relation to a specific channel.
let htlc_maximum_msat = u64::max_value();
Self::new_for_payment(
&[], payee_node_id, payee_tlvs, htlc_maximum_msat, entropy_source, secp_ctx
)
}
/// Create a blinded path for a payment, to be forwarded along `intermediate_nodes`.
///
/// Errors if:
@ -85,7 +98,7 @@ impl BlindedPath {
///
/// [`ForwardTlvs`]: crate::blinded_path::payment::ForwardTlvs
// TODO: make all payloads the same size with padding + add dummy hops
pub fn new_for_payment<ES: EntropySource, T: secp256k1::Signing + secp256k1::Verification>(
pub(crate) fn new_for_payment<ES: EntropySource, T: secp256k1::Signing + secp256k1::Verification>(
intermediate_nodes: &[payment::ForwardNode], payee_node_id: PublicKey,
payee_tlvs: payment::ReceiveTlvs, htlc_maximum_msat: u64, entropy_source: &ES,
secp_ctx: &Secp256k1<T>

10
lightning/src/ln/blinded_payment_tests.rs
View file

@ -43,9 +43,8 @@ fn do_one_hop_blinded_path(success: bool) {
},
};
let mut secp_ctx = Secp256k1::new();
let blinded_path = BlindedPath::new_for_payment(
&[], nodes[1].node.get_our_node_id(), payee_tlvs, chan_upd.htlc_maximum_msat,
&chanmon_cfgs[1].keys_manager, &secp_ctx
let blinded_path = BlindedPath::one_hop_for_payment(
nodes[1].node.get_our_node_id(), payee_tlvs, &chanmon_cfgs[1].keys_manager, &secp_ctx
).unwrap();
let route_params = RouteParameters {
@ -85,9 +84,8 @@ fn mpp_to_one_hop_blinded_path() {
htlc_minimum_msat: chan_upd_1_3.htlc_minimum_msat,
},
};
let blinded_path = BlindedPath::new_for_payment(
&[], nodes[3].node.get_our_node_id(), payee_tlvs, u64::max_value(),
&chanmon_cfgs[3].keys_manager, &secp_ctx
let blinded_path = BlindedPath::one_hop_for_payment(
nodes[3].node.get_our_node_id(), payee_tlvs, &chanmon_cfgs[3].keys_manager, &secp_ctx
).unwrap();
let bolt12_features: Bolt12InvoiceFeatures =