_ Git - rust-lightning/blob - fuzz/src/invoice_request_deser.rs

   1 // This file is Copyright its original authors, visible in version control
   2 // history.
   3 //
   4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
   5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
   7 // You may not use this file except in accordance with one or both of these
   8 // licenses.
   9
  10 use bitcoin::secp256k1::{KeyPair, Parity, PublicKey, Secp256k1, SecretKey, self};
  11 use crate::utils::test_logger;
  12 use core::convert::{Infallible, TryFrom};
  13 use lightning::blinded_path::BlindedPath;
  14 use lightning::sign::EntropySource;
  15 use lightning::ln::PaymentHash;
  16 use lightning::ln::features::BlindedHopFeatures;
  17 use lightning::offers::invoice::{BlindedPayInfo, UnsignedInvoice};
  18 use lightning::offers::invoice_request::InvoiceRequest;
  19 use lightning::offers::parse::SemanticError;
  20 use lightning::util::ser::Writeable;
  21
  22 #[inline]
  23 pub fn do_test<Out: test_logger::Output>(data: &[u8], _out: Out) {
  24         if let Ok(invoice_request) = InvoiceRequest::try_from(data.to_vec()) {
  25                 let mut bytes = Vec::with_capacity(data.len());
  26                 invoice_request.write(&mut bytes).unwrap();
  27                 assert_eq!(data, bytes);
  28
  29                 let secp_ctx = Secp256k1::new();
  30                 let keys = KeyPair::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
  31                 let mut buffer = Vec::new();
  32
  33                 if let Ok(unsigned_invoice) = build_response(&invoice_request, &secp_ctx) {
  34                         let signing_pubkey = unsigned_invoice.signing_pubkey();
  35                         let (x_only_pubkey, _) = keys.x_only_public_key();
  36                         let odd_pubkey = x_only_pubkey.public_key(Parity::Odd);
  37                         let even_pubkey = x_only_pubkey.public_key(Parity::Even);
  38                         if signing_pubkey == odd_pubkey || signing_pubkey == even_pubkey {
  39                                 unsigned_invoice
  40                                         .sign::<_, Infallible>(
  41                                                 |digest| Ok(secp_ctx.sign_schnorr_no_aux_rand(digest, &keys))
  42                                         )
  43                                         .unwrap()
  44                                         .write(&mut buffer)
  45                                         .unwrap();
  46                         } else {
  47                                 unsigned_invoice
  48                                         .sign::<_, Infallible>(
  49                                                 |digest| Ok(secp_ctx.sign_schnorr_no_aux_rand(digest, &keys))
  50                                         )
  51                                         .unwrap_err();
  52                         }
  53                 }
  54         }
  55 }
  56
  57 struct Randomness;
  58
  59 impl EntropySource for Randomness {
  60         fn get_secure_random_bytes(&self) -> [u8; 32] { [42; 32] }
  61 }
  62
  63 fn pubkey(byte: u8) -> PublicKey {
  64         let secp_ctx = Secp256k1::new();
  65         PublicKey::from_secret_key(&secp_ctx, &privkey(byte))
  66 }
  67
  68 fn privkey(byte: u8) -> SecretKey {
  69         SecretKey::from_slice(&[byte; 32]).unwrap()
  70 }
  71
  72 fn build_response<'a, T: secp256k1::Signing + secp256k1::Verification>(
  73         invoice_request: &'a InvoiceRequest, secp_ctx: &Secp256k1<T>
  74 ) -> Result<UnsignedInvoice<'a>, SemanticError> {
  75         let entropy_source = Randomness {};
  76         let paths = vec![
  77                 BlindedPath::new_for_message(&[pubkey(43), pubkey(44), pubkey(42)], &entropy_source, secp_ctx).unwrap(),
  78                 BlindedPath::new_for_message(&[pubkey(45), pubkey(46), pubkey(42)], &entropy_source, secp_ctx).unwrap(),
  79         ];
  80
  81         let payinfo = vec![
  82                 BlindedPayInfo {
  83                         fee_base_msat: 1,
  84                         fee_proportional_millionths: 1_000,
  85                         cltv_expiry_delta: 42,
  86                         htlc_minimum_msat: 100,
  87                         htlc_maximum_msat: 1_000_000_000_000,
  88                         features: BlindedHopFeatures::empty(),
  89                 },
  90                 BlindedPayInfo {
  91                         fee_base_msat: 1,
  92                         fee_proportional_millionths: 1_000,
  93                         cltv_expiry_delta: 42,
  94                         htlc_minimum_msat: 100,
  95                         htlc_maximum_msat: 1_000_000_000_000,
  96                         features: BlindedHopFeatures::empty(),
  97                 },
  98         ];
  99
 100         let payment_paths = payinfo.into_iter().zip(paths.into_iter()).collect();
 101         let payment_hash = PaymentHash([42; 32]);
 102         invoice_request.respond_with(payment_paths, payment_hash)?.build()
 103 }
 104
 105 pub fn invoice_request_deser_test<Out: test_logger::Output>(data: &[u8], out: Out) {
 106         do_test(data, out);
 107 }
 108
 109 #[no_mangle]
 110 pub extern "C" fn invoice_request_deser_run(data: *const u8, datalen: usize) {
 111         do_test(unsafe { std::slice::from_raw_parts(data, datalen) }, test_logger::DevNull {});
 112 }