_ Git - rust-lightning/blob - fuzz/src/peer_crypt.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 lightning::ln::peer_channel_encryptor::PeerChannelEncryptor;
  11 use lightning::util::test_utils::TestNodeSigner;
  12
  13 use bitcoin::secp256k1::{Secp256k1, PublicKey, SecretKey};
  14
  15 use crate::utils::test_logger;
  16
  17 #[inline]
  18 fn slice_to_be16(v: &[u8]) -> u16 {
  19         ((v[0] as u16) << 8*1) |
  20         ((v[1] as u16) << 8*0)
  21 }
  22
  23 #[inline]
  24 pub fn do_test(data: &[u8]) {
  25         let mut read_pos = 0;
  26         macro_rules! get_slice {
  27                 ($len: expr) => {
  28                         {
  29                                 let slice_len = $len as usize;
  30                                 if data.len() < read_pos + slice_len {
  31                                         return;
  32                                 }
  33                                 read_pos += slice_len;
  34                                 &data[read_pos - slice_len..read_pos]
  35                         }
  36                 }
  37         }
  38
  39         let secp_ctx = Secp256k1::signing_only();
  40
  41         let our_network_key = match SecretKey::from_slice(get_slice!(32)) {
  42                 Ok(key) => key,
  43                 Err(_) => return,
  44         };
  45         let node_signer = TestNodeSigner::new(our_network_key);
  46         let ephemeral_key = match SecretKey::from_slice(get_slice!(32)) {
  47                 Ok(key) => key,
  48                 Err(_) => return,
  49         };
  50
  51         let mut crypter = if get_slice!(1)[0] != 0 {
  52                 let their_pubkey = match PublicKey::from_slice(get_slice!(33)) {
  53                         Ok(key) => key,
  54                         Err(_) => return,
  55                 };
  56                 let mut crypter = PeerChannelEncryptor::new_outbound(their_pubkey, ephemeral_key);
  57                 crypter.get_act_one(&secp_ctx);
  58                 match crypter.process_act_two(get_slice!(50), &&node_signer) {
  59                         Ok(_) => {},
  60                         Err(_) => return,
  61                 }
  62                 assert!(crypter.is_ready_for_encryption());
  63                 crypter
  64         } else {
  65                 let mut crypter = PeerChannelEncryptor::new_inbound(&&node_signer);
  66                 match crypter.process_act_one_with_keys(get_slice!(50), &&node_signer, ephemeral_key, &secp_ctx) {
  67                         Ok(_) => {},
  68                         Err(_) => return,
  69                 }
  70                 match crypter.process_act_three(get_slice!(66)) {
  71                         Ok(_) => {},
  72                         Err(_) => return,
  73                 }
  74                 assert!(crypter.is_ready_for_encryption());
  75                 crypter
  76         };
  77         loop {
  78                 if get_slice!(1)[0] == 0 {
  79                         crypter.encrypt_buffer(get_slice!(slice_to_be16(get_slice!(2))));
  80                 } else {
  81                         let len = match crypter.decrypt_length_header(get_slice!(16+2)) {
  82                                 Ok(len) => len,
  83                                 Err(_) => return,
  84                         };
  85                         match crypter.decrypt_message(get_slice!(len as usize + 16)) {
  86                                 Ok(_) => {},
  87                                 Err(_) => return,
  88                         }
  89                 }
  90         }
  91 }
  92
  93 pub fn peer_crypt_test<Out: test_logger::Output>(data: &[u8], _out: Out) {
  94         do_test(data);
  95 }
  96
  97 #[no_mangle]
  98 pub extern "C" fn peer_crypt_run(data: *const u8, datalen: usize) {
  99         do_test(unsafe { std::slice::from_raw_parts(data, datalen) });
 100 }