Use SystemTime::now() for Invoice creation time

[rust-lightning] / lightning / src / offers / refund.rs

diff --git a/lightning/src/offers/refund.rs b/lightning/src/offers/refund.rs
index e5d8e78f0794e08c7dee1fe8e994bacb9ab14cd2..48be9774aec2f7bc5e220db29935654119c3e9b0 100644 (file)
--- a/lightning/src/offers/refund.rs
+++ b/lightning/src/offers/refund.rs
@@ -301,7 +301,11 @@ impl Refund {
        /// Creates an [`Invoice`] for the refund with the given required fields.
        ///
        /// Unless [`InvoiceBuilder::relative_expiry`] is set, the invoice will expire two hours after
-       /// `created_at`. The caller is expected to remember the preimage of `payment_hash` in order to
+       /// calling this method in `std` builds. For `no-std` builds, a final [`Duration`] parameter
+       /// must be given, which is used to set [`Invoice::created_at`] since [`std::time::SystemTime`]
+       /// is not available.
+       ///
+       /// The caller is expected to remember the preimage of `payment_hash` in order to
        /// claim a payment for the invoice.
        ///
        /// The `signing_pubkey` is required to sign the invoice since refunds are not in response to an
@@ -313,14 +317,22 @@ impl Refund {
        /// Errors if the request contains unknown required features.
        ///
        /// [`Invoice`]: crate::offers::invoice::Invoice
+       /// [`Invoice::created_at`]: crate::offers::invoice::Invoice::created_at
        pub fn respond_with(
-               &self, payment_paths: Vec<(BlindedPath, BlindedPayInfo)>, created_at: Duration,
-               payment_hash: PaymentHash, signing_pubkey: PublicKey
+               &self, payment_paths: Vec<(BlindedPath, BlindedPayInfo)>, payment_hash: PaymentHash,
+               signing_pubkey: PublicKey,
+               #[cfg(not(feature = "std"))]
+               created_at: Duration
        ) -> Result<InvoiceBuilder, SemanticError> {
                if self.features().requires_unknown_bits() {
                        return Err(SemanticError::UnknownRequiredFeatures);
                }
 
+               #[cfg(feature = "std")]
+               let created_at = std::time::SystemTime::now()
+                       .duration_since(std::time::SystemTime::UNIX_EPOCH)
+                       .expect("SystemTime::now() should come after SystemTime::UNIX_EPOCH");
+
                InvoiceBuilder::for_refund(self, payment_paths, created_at, payment_hash, signing_pubkey)
        }