From: Matt Corallo <git@bluematt.me>
Date: Fri, 2 Feb 2024 20:04:18 +0000 (+0000)
Subject: Use `payment_parameters_from_invoice` rather than building by hand
X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=f0eb724681f30b24cfd437f966f1b6ecc8a1061e;p=ldk-sample

Use `payment_parameters_from_invoice` rather than building by hand
---

diff --git a/src/cli.rs b/src/cli.rs
index e348742..5c544c2 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -19,6 +19,7 @@ use lightning::sign::{EntropySource, KeysManager};
 use lightning::util::config::{ChannelHandshakeConfig, ChannelHandshakeLimits, UserConfig};
 use lightning::util::persist::KVStore;
 use lightning::util::ser::{Writeable, Writer};
+use lightning_invoice::payment::payment_parameters_from_invoice;
 use lightning_invoice::{utils, Bolt11Invoice, Currency};
 use lightning_persister::fs_store::FilesystemStore;
 use std::env;
@@ -690,8 +691,16 @@ fn send_payment(
 	outbound_payments: &mut OutboundPaymentInfoStorage, fs_store: Arc<FilesystemStore>,
 ) {
 	let payment_id = PaymentId((*invoice.payment_hash()).to_byte_array());
-	let payment_hash = PaymentHash((*invoice.payment_hash()).to_byte_array());
 	let payment_secret = Some(*invoice.payment_secret());
+	let (payment_hash, recipient_onion, route_params) =
+		match payment_parameters_from_invoice(invoice) {
+			Ok(res) => res,
+			Err(e) => {
+				println!("Failed to parse invoice");
+				print!("> ");
+				return;
+			}
+		};
 	outbound_payments.payments.insert(
 		payment_id,
 		PaymentInfo {
@@ -703,42 +712,6 @@ fn send_payment(
 	);
 	fs_store.write("", "", OUTBOUND_PAYMENTS_FNAME, &outbound_payments.encode()).unwrap();
 
-	let mut recipient_onion = RecipientOnionFields::secret_only(*invoice.payment_secret());
-	recipient_onion.payment_metadata = invoice.payment_metadata().map(|v| v.clone());
-	let mut payment_params = match PaymentParameters::from_node_id(
-		invoice.recover_payee_pub_key(),
-		invoice.min_final_cltv_expiry_delta() as u32,
-	)
-	.with_expiry_time(
-		invoice.duration_since_epoch().as_secs().saturating_add(invoice.expiry_time().as_secs()),
-	)
-	.with_route_hints(invoice.route_hints())
-	{
-		Err(e) => {
-			println!("ERROR: Could not process invoice to prepare payment parameters, {:?}, invoice: {:?}", e, invoice);
-			return;
-		}
-		Ok(p) => p,
-	};
-	if let Some(features) = invoice.features() {
-		payment_params = match payment_params.with_bolt11_features(features.clone()) {
-			Err(e) => {
-				println!("ERROR: Could not build BOLT11 payment parameters! {:?}", e);
-				return;
-			}
-			Ok(p) => p,
-		};
-	}
-	let invoice_amount = match invoice.amount_milli_satoshis() {
-		None => {
-			println!("ERROR: An invoice with an amount is expected; {:?}", invoice);
-			return;
-		}
-		Some(a) => a,
-	};
-	let route_params =
-		RouteParameters::from_payment_params_and_value(payment_params, invoice_amount);
-
 	match channel_manager.send_payment(
 		payment_hash,
 		recipient_onion,