Include Offer context in blinded payment paths

[rust-lightning] / lightning / src / blinded_path / payment.rs

diff --git a/lightning/src/blinded_path/payment.rs b/lightning/src/blinded_path/payment.rs
index 39f7c7f11088c51bdb5a55393084274d96631820..99979ecf4a37140ef5f7375fdc2c0cc67e0eaa7b 100644 (file)
--- a/lightning/src/blinded_path/payment.rs
+++ b/lightning/src/blinded_path/payment.rs
@@ -12,6 +12,7 @@ use crate::ln::channelmanager::CounterpartyForwardingInfo;
 use crate::ln::features::BlindedHopFeatures;
 use crate::ln::msgs::DecodeError;
 use crate::offers::invoice::BlindedPayInfo;
+use crate::offers::offer::OfferId;
 use crate::util::ser::{HighZeroBytesDroppedBigSize, Readable, Writeable, Writer};
 
 #[allow(unused_imports)]
@@ -108,12 +109,28 @@ pub struct PaymentConstraints {
 pub enum PaymentContext {
        /// The payment context was unknown.
        Unknown(UnknownPaymentContext),
+
+       /// The payment was made for an invoice requested from a BOLT 12 [`Offer`].
+       ///
+       /// [`Offer`]: crate::offers::offer::Offer
+       Bolt12Offer(Bolt12OfferContext),
 }
 
 /// An unknown payment context.
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub struct UnknownPaymentContext(());
 
+/// The context of a payment made for an invoice requested from a BOLT 12 [`Offer`].
+///
+/// [`Offer`]: crate::offers::offer::Offer
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct Bolt12OfferContext {
+       /// The identifier of the [`Offer`].
+       ///
+       /// [`Offer`]: crate::offers::offer::Offer
+       pub offer_id: OfferId,
+}
+
 impl PaymentContext {
        pub(crate) fn unknown() -> Self {
                PaymentContext::Unknown(UnknownPaymentContext(()))
@@ -340,6 +357,7 @@ impl Readable for PaymentConstraints {
 impl_writeable_tlv_based_enum!(PaymentContext,
        ;
        (0, Unknown),
+       (1, Bolt12Offer),
 );
 
 impl Writeable for UnknownPaymentContext {
@@ -354,6 +372,10 @@ impl Readable for UnknownPaymentContext {
        }
 }
 
+impl_writeable_tlv_based!(Bolt12OfferContext, {
+       (0, offer_id, required),
+});
+
 #[cfg(test)]
 mod tests {
        use bitcoin::secp256k1::PublicKey;