_ Git - rust-lightning/blob - fuzz/fuzz_targets/router_target.rs

   1 extern crate bitcoin;
   2 extern crate lightning;
   3 extern crate secp256k1;
   4
   5 use bitcoin::util::hash::Sha256dHash;
   6 use bitcoin::blockdata::script::{Script, Builder};
   7
   8 use lightning::chain::chaininterface::{ChainError,ChainWatchInterface, ChainListener};
   9 use lightning::ln::channelmanager::ChannelDetails;
  10 use lightning::ln::msgs;
  11 use lightning::ln::msgs::{RoutingMessageHandler};
  12 use lightning::ln::router::{Router, RouteHint};
  13 use lightning::util::reset_rng_state;
  14 use lightning::util::logger::Logger;
  15 use lightning::util::ser::Readable;
  16
  17 use secp256k1::key::PublicKey;
  18 use secp256k1::Secp256k1;
  19
  20 mod utils;
  21
  22 use utils::test_logger;
  23
  24 use std::sync::{Weak, Arc};
  25 use std::sync::atomic::{AtomicUsize, Ordering};
  26
  27 #[inline]
  28 pub fn slice_to_be16(v: &[u8]) -> u16 {
  29         ((v[0] as u16) << 8*1) |
  30         ((v[1] as u16) << 8*0)
  31 }
  32
  33 #[inline]
  34 pub fn slice_to_be32(v: &[u8]) -> u32 {
  35         ((v[0] as u32) << 8*3) |
  36         ((v[1] as u32) << 8*2) |
  37         ((v[2] as u32) << 8*1) |
  38         ((v[3] as u32) << 8*0)
  39 }
  40
  41 #[inline]
  42 pub fn slice_to_be64(v: &[u8]) -> u64 {
  43         ((v[0] as u64) << 8*7) |
  44         ((v[1] as u64) << 8*6) |
  45         ((v[2] as u64) << 8*5) |
  46         ((v[3] as u64) << 8*4) |
  47         ((v[4] as u64) << 8*3) |
  48         ((v[5] as u64) << 8*2) |
  49         ((v[6] as u64) << 8*1) |
  50         ((v[7] as u64) << 8*0)
  51 }
  52
  53
  54 struct InputData {
  55         data: Vec<u8>,
  56         read_pos: AtomicUsize,
  57 }
  58 impl InputData {
  59         fn get_slice(&self, len: usize) -> Option<&[u8]> {
  60                 let old_pos = self.read_pos.fetch_add(len, Ordering::AcqRel);
  61                 if self.data.len() < old_pos + len {
  62                         return None;
  63                 }
  64                 Some(&self.data[old_pos..old_pos + len])
  65         }
  66         fn get_slice_nonadvancing(&self, len: usize) -> Option<&[u8]> {
  67                 let old_pos = self.read_pos.load(Ordering::Acquire);
  68                 if self.data.len() < old_pos + len {
  69                         return None;
  70                 }
  71                 Some(&self.data[old_pos..old_pos + len])
  72         }
  73 }
  74
  75 struct DummyChainWatcher {
  76         input: Arc<InputData>,
  77 }
  78
  79 impl ChainWatchInterface for DummyChainWatcher {
  80         fn install_watch_tx(&self, _txid: &Sha256dHash, _script_pub_key: &Script) { }
  81         fn install_watch_outpoint(&self, _outpoint: (Sha256dHash, u32), _out_script: &Script) { }
  82         fn watch_all_txn(&self) { }
  83         fn register_listener(&self, _listener: Weak<ChainListener>) { }
  84
  85         fn get_chain_utxo(&self, _genesis_hash: Sha256dHash, _unspent_tx_output_identifier: u64) -> Result<(Script, u64), ChainError> {
  86                 match self.input.get_slice(2) {
  87                         Some(&[0, _]) => Err(ChainError::NotSupported),
  88                         Some(&[1, _]) => Err(ChainError::NotWatched),
  89                         Some(&[2, _]) => Err(ChainError::UnknownTx),
  90                         Some(&[_, x]) => Ok((Builder::new().push_int(x as i64).into_script().to_v0_p2wsh(), 0)),
  91                         None => Err(ChainError::UnknownTx),
  92                         _ => unreachable!(),
  93                 }
  94         }
  95 }
  96
  97 #[inline]
  98 pub fn do_test(data: &[u8]) {
  99         reset_rng_state();
 100
 101         let input = Arc::new(InputData {
 102                 data: data.to_vec(),
 103                 read_pos: AtomicUsize::new(0),
 104         });
 105         macro_rules! get_slice_nonadvancing {
 106                 ($len: expr) => {
 107                         match input.get_slice_nonadvancing($len as usize) {
 108                                 Some(slice) => slice,
 109                                 None => return,
 110                         }
 111                 }
 112         }
 113         macro_rules! get_slice {
 114                 ($len: expr) => {
 115                         match input.get_slice($len as usize) {
 116                                 Some(slice) => slice,
 117                                 None => return,
 118                         }
 119                 }
 120         }
 121
 122         macro_rules! decode_msg {
 123                 ($MsgType: path, $len: expr) => {{
 124                         let mut reader = ::std::io::Cursor::new(get_slice!($len));
 125                         match <($MsgType)>::read(&mut reader) {
 126                                 Ok(msg) => msg,
 127                                 Err(e) => match e {
 128                                         msgs::DecodeError::UnknownRealmByte => return,
 129                                         msgs::DecodeError::UnknownRequiredFeature => return,
 130                                         msgs::DecodeError::BadPublicKey => return,
 131                                         msgs::DecodeError::BadSignature => return,
 132                                         msgs::DecodeError::BadText => return,
 133                                         msgs::DecodeError::ExtraAddressesPerType => return,
 134                                         msgs::DecodeError::BadLengthDescriptor => return,
 135                                         msgs::DecodeError::ShortRead => panic!("We picked the length..."),
 136                                         msgs::DecodeError::InvalidValue => panic!("Should not happen with p2p message decoding"),
 137                                         msgs::DecodeError::Io(e) => panic!(format!("{}", e)),
 138                                 }
 139                         }
 140                 }}
 141         }
 142
 143         macro_rules! decode_msg_with_len16 {
 144                 ($MsgType: path, $begin_len: expr, $excess: expr) => {
 145                         {
 146                                 let extra_len = slice_to_be16(&get_slice_nonadvancing!($begin_len as usize + 2)[$begin_len..$begin_len + 2]);
 147                                 decode_msg!($MsgType, $begin_len as usize + 2 + (extra_len as usize) + $excess)
 148                         }
 149                 }
 150         }
 151
 152         let secp_ctx = Secp256k1::new();
 153         macro_rules! get_pubkey {
 154                 () => {
 155                         match PublicKey::from_slice(&secp_ctx, get_slice!(33)) {
 156                                 Ok(key) => key,
 157                                 Err(_) => return,
 158                         }
 159                 }
 160         }
 161
 162         let logger: Arc<Logger> = Arc::new(test_logger::TestLogger{});
 163         let chain_monitor = Arc::new(DummyChainWatcher {
 164                 input: Arc::clone(&input),
 165         });
 166
 167         let our_pubkey = get_pubkey!();
 168         let router = Router::new(our_pubkey.clone(), chain_monitor, Arc::clone(&logger));
 169
 170         loop {
 171                 match get_slice!(1)[0] {
 172                         0 => {
 173                                 let start_len = slice_to_be16(&get_slice_nonadvancing!(64 + 2)[64..64 + 2]) as usize;
 174                                 let addr_len = slice_to_be16(&get_slice_nonadvancing!(64+start_len+2 + 74)[64+start_len+2 + 72..64+start_len+2 + 74]);
 175                                 if addr_len > (37+1)*4 {
 176                                         return;
 177                                 }
 178                                 let _ = router.handle_node_announcement(&decode_msg_with_len16!(msgs::NodeAnnouncement, 64, 288));
 179                         },
 180                         1 => {
 181                                 let _ = router.handle_channel_announcement(&decode_msg_with_len16!(msgs::ChannelAnnouncement, 64*4, 32+8+33*4));
 182                         },
 183                         2 => {
 184                                 let _ = router.handle_channel_update(&decode_msg!(msgs::ChannelUpdate, 128));
 185                         },
 186                         3 => {
 187                                 match get_slice!(1)[0] {
 188                                         0 => {
 189                                                 router.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelUpdateMessage {msg: decode_msg!(msgs::ChannelUpdate, 128)});
 190                                         },
 191                                         1 => {
 192                                                 let short_channel_id = slice_to_be64(get_slice!(8));
 193                                                 router.handle_htlc_fail_channel_update(&msgs::HTLCFailChannelUpdate::ChannelClosed {short_channel_id});
 194                                         },
 195                                         _ => return,
 196                                 }
 197                         },
 198                         4 => {
 199                                 let target = get_pubkey!();
 200                                 let mut first_hops_vec = Vec::new();
 201                                 let first_hops = match get_slice!(1)[0] {
 202                                         0 => None,
 203                                         1 => {
 204                                                 let count = slice_to_be16(get_slice!(2));
 205                                                 for _ in 0..count {
 206                                                         first_hops_vec.push(ChannelDetails {
 207                                                                 channel_id: [0; 32],
 208                                                                 short_channel_id: Some(slice_to_be64(get_slice!(8))),
 209                                                                 remote_network_id: get_pubkey!(),
 210                                                                 channel_value_satoshis: slice_to_be64(get_slice!(8)),
 211                                                                 user_id: 0,
 212                                                         });
 213                                                 }
 214                                                 Some(&first_hops_vec[..])
 215                                         },
 216                                         _ => return,
 217                                 };
 218                                 let mut last_hops_vec = Vec::new();
 219                                 let last_hops = {
 220                                         let count = slice_to_be16(get_slice!(2));
 221                                         for _ in 0..count {
 222                                                 last_hops_vec.push(RouteHint {
 223                                                         src_node_id: get_pubkey!(),
 224                                                         short_channel_id: slice_to_be64(get_slice!(8)),
 225                                                         fee_base_msat: slice_to_be32(get_slice!(4)),
 226                                                         fee_proportional_millionths: slice_to_be32(get_slice!(4)),
 227                                                         cltv_expiry_delta: slice_to_be16(get_slice!(2)),
 228                                                         htlc_minimum_msat: slice_to_be64(get_slice!(8)),
 229                                                 });
 230                                         }
 231                                         &last_hops_vec[..]
 232                                 };
 233                                 let _ = router.get_route(&target, first_hops, last_hops, slice_to_be64(get_slice!(8)), slice_to_be32(get_slice!(4)));
 234                         },
 235                         _ => return,
 236                 }
 237         }
 238 }
 239
 240 #[cfg(feature = "afl")]
 241 #[macro_use] extern crate afl;
 242 #[cfg(feature = "afl")]
 243 fn main() {
 244         fuzz!(|data| {
 245                 do_test(data);
 246         });
 247 }
 248
 249 #[cfg(feature = "honggfuzz")]
 250 #[macro_use] extern crate honggfuzz;
 251 #[cfg(feature = "honggfuzz")]
 252 fn main() {
 253         loop {
 254                 fuzz!(|data| {
 255                         do_test(data);
 256                 });
 257         }
 258 }
 259
 260 extern crate hex;
 261 #[cfg(test)]
 262 mod tests {
 263
 264         #[test]
 265         fn duplicate_crash() {
 266                 super::do_test(&::hex::decode("00").unwrap());
 267         }
 268 }