X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=fuzz%2Fsrc%2Frefund_deser.rs;fp=fuzz%2Fsrc%2Frefund_deser.rs;h=9adaa3e953cb63c97152eef3ea3ce8f339968f26;hb=f71daed02d159e051e065802155d3ad77edbc124;hp=0000000000000000000000000000000000000000;hpb=22d1bab7acfb86c3e4065c06153d2c6df79394b0;p=rust-lightning

diff --git a/fuzz/src/refund_deser.rs b/fuzz/src/refund_deser.rs
new file mode 100644
index 00000000..9adaa3e9
--- /dev/null
+++ b/fuzz/src/refund_deser.rs
@@ -0,0 +1,101 @@
+// This file is Copyright its original authors, visible in version control
+// history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
+// or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// You may not use this file except in accordance with one or both of these
+// licenses.
+
+use bitcoin::secp256k1::{KeyPair, PublicKey, Secp256k1, SecretKey, self};
+use crate::utils::test_logger;
+use core::convert::{Infallible, TryFrom};
+use lightning::chain::keysinterface::EntropySource;
+use lightning::ln::PaymentHash;
+use lightning::ln::features::BlindedHopFeatures;
+use lightning::offers::invoice::{BlindedPayInfo, UnsignedInvoice};
+use lightning::offers::parse::SemanticError;
+use lightning::offers::refund::Refund;
+use lightning::onion_message::BlindedPath;
+use lightning::util::ser::Writeable;
+
+#[inline]
+pub fn do_test<Out: test_logger::Output>(data: &[u8], _out: Out) {
+	if let Ok(refund) = Refund::try_from(data.to_vec()) {
+		let mut bytes = Vec::with_capacity(data.len());
+		refund.write(&mut bytes).unwrap();
+		assert_eq!(data, bytes);
+
+		let secp_ctx = Secp256k1::new();
+		let keys = KeyPair::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
+		let pubkey = PublicKey::from(keys);
+		let mut buffer = Vec::new();
+
+		if let Ok(invoice) = build_response(&refund, pubkey, &secp_ctx) {
+			invoice
+				.sign::<_, Infallible>(
+					|digest| Ok(secp_ctx.sign_schnorr_no_aux_rand(digest, &keys))
+				)
+				.unwrap()
+				.write(&mut buffer)
+				.unwrap();
+		}
+	}
+}
+
+struct Randomness;
+
+impl EntropySource for Randomness {
+	fn get_secure_random_bytes(&self) -> [u8; 32] { [42; 32] }
+}
+
+fn pubkey(byte: u8) -> PublicKey {
+	let secp_ctx = Secp256k1::new();
+	PublicKey::from_secret_key(&secp_ctx, &privkey(byte))
+}
+
+fn privkey(byte: u8) -> SecretKey {
+	SecretKey::from_slice(&[byte; 32]).unwrap()
+}
+
+fn build_response<'a, T: secp256k1::Signing + secp256k1::Verification>(
+	refund: &'a Refund, signing_pubkey: PublicKey, secp_ctx: &Secp256k1<T>
+) -> Result<UnsignedInvoice<'a>, SemanticError> {
+	let entropy_source = Randomness {};
+	let paths = vec![
+		BlindedPath::new(&[pubkey(43), pubkey(44), pubkey(42)], &entropy_source, secp_ctx).unwrap(),
+		BlindedPath::new(&[pubkey(45), pubkey(46), pubkey(42)], &entropy_source, secp_ctx).unwrap(),
+	];
+
+	let payinfo = vec![
+		BlindedPayInfo {
+			fee_base_msat: 1,
+			fee_proportional_millionths: 1_000,
+			cltv_expiry_delta: 42,
+			htlc_minimum_msat: 100,
+			htlc_maximum_msat: 1_000_000_000_000,
+			features: BlindedHopFeatures::empty(),
+		},
+		BlindedPayInfo {
+			fee_base_msat: 1,
+			fee_proportional_millionths: 1_000,
+			cltv_expiry_delta: 42,
+			htlc_minimum_msat: 100,
+			htlc_maximum_msat: 1_000_000_000_000,
+			features: BlindedHopFeatures::empty(),
+		},
+	];
+
+	let payment_paths = paths.into_iter().zip(payinfo.into_iter()).collect();
+	let payment_hash = PaymentHash([42; 32]);
+	refund.respond_with(payment_paths, payment_hash, signing_pubkey)?.build()
+}
+
+pub fn refund_deser_test<Out: test_logger::Output>(data: &[u8], out: Out) {
+	do_test(data, out);
+}
+
+#[no_mangle]
+pub extern "C" fn refund_deser_run(data: *const u8, datalen: usize) {
+	do_test(unsafe { std::slice::from_raw_parts(data, datalen) }, test_logger::DevNull {});
+}