Add OffersMessage variant for static invoices.

Author: valentinewallace

lightning/src/ln/channelmanager.rs

@@ -10337,6 +10337,16 @@ where
 					},
 				}
 			},
+			OffersMessage::StaticInvoice(_invoice) => {
+				match responder {
+					Some(responder) => {
+						responder.respond(OffersMessage::InvoiceError(
+								InvoiceError::from_string("Static invoices not yet supported".to_string())
+						))
+					},
+					None => return ResponseInstruction::NoResponse,
+				}
+			},
 			OffersMessage::InvoiceError(invoice_error) => {
 				log_trace!(self.logger, "Received invoice_error: {}", invoice_error);
 				ResponseInstruction::NoResponse

lightning/src/ln/offers_tests.rs

@@ -192,6 +192,7 @@ fn extract_invoice_request<'a, 'b, 'c>(
 			ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 				OffersMessage::InvoiceRequest(invoice_request) => (invoice_request, reply_path.unwrap()),
 				OffersMessage::Invoice(invoice) => panic!("Unexpected invoice: {:?}", invoice),
+				OffersMessage::StaticInvoice(invoice) => panic!("Unexpected static invoice: {:?}", invoice),
 				OffersMessage::InvoiceError(error) => panic!("Unexpected invoice_error: {:?}", error),
 			},
 			ParsedOnionMessageContents::AsyncPayments(message) => panic!("Unexpected async payments message: {:?}", message),
@@ -208,6 +209,7 @@ fn extract_invoice<'a, 'b, 'c>(node: &Node<'a, 'b, 'c>, message: &OnionMessage)
 			ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 				OffersMessage::InvoiceRequest(invoice_request) => panic!("Unexpected invoice_request: {:?}", invoice_request),
 				OffersMessage::Invoice(invoice) => invoice,
+				OffersMessage::StaticInvoice(invoice) => panic!("Unexpected static invoice: {:?}", invoice),
 				OffersMessage::InvoiceError(error) => panic!("Unexpected invoice_error: {:?}", error),
 			},
 			ParsedOnionMessageContents::AsyncPayments(message) => panic!("Unexpected async payments message: {:?}", message),
@@ -226,6 +228,7 @@ fn extract_invoice_error<'a, 'b, 'c>(
 			ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 				OffersMessage::InvoiceRequest(invoice_request) => panic!("Unexpected invoice_request: {:?}", invoice_request),
 				OffersMessage::Invoice(invoice) => panic!("Unexpected invoice: {:?}", invoice),
+				OffersMessage::StaticInvoice(invoice) => panic!("Unexpected invoice: {:?}", invoice),
 				OffersMessage::InvoiceError(error) => error,
 			},
 			ParsedOnionMessageContents::AsyncPayments(message) => panic!("Unexpected async payments message: {:?}", message),

lightning/src/onion_message/offers.rs

@@ -16,6 +16,7 @@ use crate::offers::invoice_error::InvoiceError;
 use crate::offers::invoice_request::InvoiceRequest;
 use crate::offers::invoice::Bolt12Invoice;
 use crate::offers::parse::Bolt12ParseError;
+use crate::offers::static_invoice::StaticInvoice;
 use crate::onion_message::packet::OnionMessageContents;
 use crate::util::logger::Logger;
 use crate::util::ser::{Readable, ReadableArgs, Writeable, Writer};
@@ -29,6 +30,7 @@ use crate::prelude::*;
 const INVOICE_REQUEST_TLV_TYPE: u64 = 64;
 const INVOICE_TLV_TYPE: u64 = 66;
 const INVOICE_ERROR_TLV_TYPE: u64 = 68;
+const STATIC_INVOICE_TLV_TYPE: u64 = 70;
 
 /// A handler for an [`OnionMessage`] containing a BOLT 12 Offers message as its payload.
 ///
@@ -72,6 +74,9 @@ pub enum OffersMessage {
 	/// [`Refund`]: crate::offers::refund::Refund
 	Invoice(Bolt12Invoice),
 
+	/// A [`StaticInvoice`] sent in response to an [`InvoiceRequest`].
+	StaticInvoice(StaticInvoice),
+
 	/// An error from handling an [`OffersMessage`].
 	InvoiceError(InvoiceError),
 }
@@ -80,7 +85,10 @@ impl OffersMessage {
 	/// Returns whether `tlv_type` corresponds to a TLV record for Offers.
 	pub fn is_known_type(tlv_type: u64) -> bool {
 		match tlv_type {
-			INVOICE_REQUEST_TLV_TYPE | INVOICE_TLV_TYPE | INVOICE_ERROR_TLV_TYPE => true,
+			INVOICE_REQUEST_TLV_TYPE
+			| INVOICE_TLV_TYPE
+			| STATIC_INVOICE_TLV_TYPE
+			| INVOICE_ERROR_TLV_TYPE => true,
 			_ => false,
 		}
 	}
@@ -89,6 +97,7 @@ impl OffersMessage {
 		match tlv_type {
 			INVOICE_REQUEST_TLV_TYPE => Ok(Self::InvoiceRequest(InvoiceRequest::try_from(bytes)?)),
 			INVOICE_TLV_TYPE => Ok(Self::Invoice(Bolt12Invoice::try_from(bytes)?)),
+			STATIC_INVOICE_TLV_TYPE => Ok(Self::StaticInvoice(StaticInvoice::try_from(bytes)?)),
 			_ => Err(Bolt12ParseError::Decode(DecodeError::InvalidValue)),
 		}
 	}
@@ -103,6 +112,9 @@ impl fmt::Debug for OffersMessage {
 			OffersMessage::Invoice(message) => {
 				write!(f, "{:?}", message.as_tlv_stream())
 			}
+			OffersMessage::StaticInvoice(message) => {
+				write!(f, "{:?}", message)
+			}
 			OffersMessage::InvoiceError(message) => {
 				write!(f, "{:?}", message)
 			}
@@ -115,13 +127,15 @@ impl OnionMessageContents for OffersMessage {
 		match self {
 			OffersMessage::InvoiceRequest(_) => INVOICE_REQUEST_TLV_TYPE,
 			OffersMessage::Invoice(_) => INVOICE_TLV_TYPE,
+			OffersMessage::StaticInvoice(_) => STATIC_INVOICE_TLV_TYPE,
 			OffersMessage::InvoiceError(_) => INVOICE_ERROR_TLV_TYPE,
 		}
 	}
 	fn msg_type(&self) -> &'static str {
 		match &self {
 			OffersMessage::InvoiceRequest(_) => "Invoice Request",
 			OffersMessage::Invoice(_) => "Invoice",
+			OffersMessage::StaticInvoice(_) => "Static Invoice",
 			OffersMessage::InvoiceError(_) => "Invoice Error",
 		}
 	}
@@ -132,6 +146,7 @@ impl Writeable for OffersMessage {
 		match self {
 			OffersMessage::InvoiceRequest(message) => message.write(w),
 			OffersMessage::Invoice(message) => message.write(w),
+			OffersMessage::StaticInvoice(message) => message.write(w),
 			OffersMessage::InvoiceError(message) => message.write(w),
 		}
 	}