use crate::blinded_path::utils;
use crate::io;
use crate::ln::PaymentSecret;
+use crate::ln::channelmanager::CounterpartyForwardingInfo;
use crate::ln::features::BlindedHopFeatures;
use crate::ln::msgs::DecodeError;
use crate::offers::invoice::BlindedPayInfo;
/// [`BlindedHop`]: crate::blinded_path::BlindedHop
#[derive(Clone, Debug)]
pub struct PaymentConstraints {
- /// The maximum total CLTV delta that is acceptable when relaying a payment over this
- /// [`BlindedHop`].
+ /// The maximum total CLTV that is acceptable when relaying a payment over this [`BlindedHop`].
pub max_cltv_expiry: u32,
/// The minimum value, in msat, that may be accepted by the node corresponding to this
/// [`BlindedHop`].
pub htlc_minimum_msat: u64,
}
+impl TryFrom<CounterpartyForwardingInfo> for PaymentRelay {
+ type Error = ();
+
+ fn try_from(info: CounterpartyForwardingInfo) -> Result<Self, ()> {
+ let CounterpartyForwardingInfo {
+ fee_base_msat, fee_proportional_millionths, cltv_expiry_delta
+ } = info;
+
+ // Avoid exposing esoteric CLTV expiry deltas
+ let cltv_expiry_delta = match cltv_expiry_delta {
+ 0..=40 => 40,
+ 41..=80 => 80,
+ 81..=144 => 144,
+ 145..=216 => 216,
+ _ => return Err(()),
+ };
+
+ Ok(Self { cltv_expiry_delta, fee_proportional_millionths, fee_base_msat })
+ }
+}
+
impl Writeable for ForwardTlvs {
fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
encode_tlv_stream!(w, {
}
/// `None` if underflow occurs.
-fn amt_to_forward_msat(inbound_amt_msat: u64, payment_relay: &PaymentRelay) -> Option<u64> {
+pub(crate) fn amt_to_forward_msat(inbound_amt_msat: u64, payment_relay: &PaymentRelay) -> Option<u64> {
let inbound_amt = inbound_amt_msat as u128;
let base = payment_relay.fee_base_msat as u128;
let prop = payment_relay.fee_proportional_millionths as u128;