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

   1 extern crate bitcoin;
   2 extern crate crypto;
   3 extern crate lightning;
   4 extern crate secp256k1;
   5
   6 use bitcoin::blockdata::block::BlockHeader;
   7 use bitcoin::blockdata::transaction::{Transaction, TxOut};
   8 use bitcoin::blockdata::script::Script;
   9 use bitcoin::network::constants::Network;
  10 use bitcoin::network::serialize::{serialize, BitcoinHash};
  11 use bitcoin::util::hash::Sha256dHash;
  12
  13 use crypto::sha2::Sha256;
  14 use crypto::digest::Digest;
  15
  16 use lightning::chain::chaininterface::{BroadcasterInterface,ConfirmationTarget,ChainListener,FeeEstimator,ChainWatchInterfaceUtil};
  17 use lightning::chain::transaction::OutPoint;
  18 use lightning::ln::channelmonitor;
  19 use lightning::ln::channelmanager::ChannelManager;
  20 use lightning::ln::peer_handler::{MessageHandler,PeerManager,SocketDescriptor};
  21 use lightning::ln::router::Router;
  22 use lightning::util::events::{EventsProvider,Event};
  23 use lightning::util::reset_rng_state;
  24
  25 use secp256k1::key::{PublicKey,SecretKey};
  26 use secp256k1::Secp256k1;
  27
  28 use std::cell::RefCell;
  29 use std::collections::HashMap;
  30 use std::hash::Hash;
  31 use std::sync::Arc;
  32 use std::sync::atomic::{AtomicUsize,Ordering};
  33
  34 #[inline]
  35 pub fn slice_to_be16(v: &[u8]) -> u16 {
  36         ((v[0] as u16) << 8*1) |
  37         ((v[1] as u16) << 8*0)
  38 }
  39
  40 #[inline]
  41 pub fn slice_to_be24(v: &[u8]) -> u32 {
  42         ((v[0] as u32) << 8*2) |
  43         ((v[1] as u32) << 8*1) |
  44         ((v[2] as u32) << 8*0)
  45 }
  46
  47 #[inline]
  48 pub fn slice_to_be32(v: &[u8]) -> u32 {
  49         ((v[0] as u32) << 8*3) |
  50         ((v[1] as u32) << 8*2) |
  51         ((v[2] as u32) << 8*1) |
  52         ((v[3] as u32) << 8*0)
  53 }
  54
  55 #[inline]
  56 pub fn be64_to_array(u: u64) -> [u8; 8] {
  57         let mut v = [0; 8];
  58         v[0] = ((u >> 8*7) & 0xff) as u8;
  59         v[1] = ((u >> 8*6) & 0xff) as u8;
  60         v[2] = ((u >> 8*5) & 0xff) as u8;
  61         v[3] = ((u >> 8*4) & 0xff) as u8;
  62         v[4] = ((u >> 8*3) & 0xff) as u8;
  63         v[5] = ((u >> 8*2) & 0xff) as u8;
  64         v[6] = ((u >> 8*1) & 0xff) as u8;
  65         v[7] = ((u >> 8*0) & 0xff) as u8;
  66         v
  67 }
  68
  69 struct InputData {
  70         data: Vec<u8>,
  71         read_pos: AtomicUsize,
  72 }
  73 impl InputData {
  74         fn get_slice(&self, len: usize) -> Option<&[u8]> {
  75                 let old_pos = self.read_pos.fetch_add(len, Ordering::AcqRel);
  76                 if self.data.len() < old_pos + len {
  77                         return None;
  78                 }
  79                 Some(&self.data[old_pos..old_pos + len])
  80         }
  81 }
  82
  83 struct FuzzEstimator {
  84         input: Arc<InputData>,
  85 }
  86 impl FeeEstimator for FuzzEstimator {
  87         fn get_est_sat_per_vbyte(&self, _: ConfirmationTarget) -> u64 {
  88                 //TODO: We should actually be testing at least much more than 64k...
  89                 match self.input.get_slice(2) {
  90                         Some(slice) => slice_to_be16(slice) as u64,
  91                         None => 0
  92                 }
  93         }
  94 }
  95
  96 struct TestChannelMonitor {}
  97 impl channelmonitor::ManyChannelMonitor for TestChannelMonitor {
  98         fn add_update_monitor(&self, _funding_txo: OutPoint, _monitor: channelmonitor::ChannelMonitor) -> Result<(), channelmonitor::ChannelMonitorUpdateErr> {
  99                 //TODO!
 100                 Ok(())
 101         }
 102 }
 103
 104 struct TestBroadcaster {}
 105 impl BroadcasterInterface for TestBroadcaster {
 106         fn broadcast_transaction(&self, _tx: &Transaction) {}
 107 }
 108
 109 #[derive(Clone)]
 110 struct Peer<'a> {
 111         id: u8,
 112         peers_connected: &'a RefCell<[bool; 256]>,
 113 }
 114 impl<'a> SocketDescriptor for Peer<'a> {
 115         fn send_data(&mut self, data: &Vec<u8>, write_offset: usize, _resume_read: bool) -> usize {
 116                 assert!(write_offset < data.len());
 117                 data.len() - write_offset
 118         }
 119         fn disconnect_socket(&mut self) {
 120                 assert!(self.peers_connected.borrow()[self.id as usize]);
 121                 self.peers_connected.borrow_mut()[self.id as usize] = false;
 122         }
 123 }
 124 impl<'a> PartialEq for Peer<'a> {
 125         fn eq(&self, other: &Self) -> bool {
 126                 self.id == other.id
 127         }
 128 }
 129 impl<'a> Eq for Peer<'a> {}
 130 impl<'a> Hash for Peer<'a> {
 131         fn hash<H : std::hash::Hasher>(&self, h: &mut H) {
 132                 self.id.hash(h)
 133         }
 134 }
 135
 136 #[inline]
 137 pub fn do_test(data: &[u8]) {
 138         reset_rng_state();
 139
 140         let input = Arc::new(InputData {
 141                 data: data.to_vec(),
 142                 read_pos: AtomicUsize::new(0),
 143         });
 144         let fee_est = Arc::new(FuzzEstimator {
 145                 input: input.clone(),
 146         });
 147
 148         macro_rules! get_slice {
 149                 ($len: expr) => {
 150                         match input.get_slice($len as usize) {
 151                                 Some(slice) => slice,
 152                                 None => return,
 153                         }
 154                 }
 155         }
 156
 157         let secp_ctx = Secp256k1::new();
 158         macro_rules! get_pubkey {
 159                 () => {
 160                         match PublicKey::from_slice(&secp_ctx, get_slice!(33)) {
 161                                 Ok(key) => key,
 162                                 Err(_) => return,
 163                         }
 164                 }
 165         }
 166
 167         let our_network_key = match SecretKey::from_slice(&secp_ctx, get_slice!(32)) {
 168                 Ok(key) => key,
 169                 Err(_) => return,
 170         };
 171
 172         let monitor = Arc::new(TestChannelMonitor{});
 173         let watch = Arc::new(ChainWatchInterfaceUtil::new());
 174         let broadcast = Arc::new(TestBroadcaster{});
 175
 176         let channelmanager = ChannelManager::new(our_network_key, slice_to_be32(get_slice!(4)), get_slice!(1)[0] != 0, Network::Bitcoin, fee_est.clone(), monitor.clone(), watch.clone(), broadcast.clone()).unwrap();
 177         let router = Arc::new(Router::new(PublicKey::from_secret_key(&secp_ctx, &our_network_key).unwrap()));
 178
 179         let peers = RefCell::new([false; 256]);
 180         let handler = PeerManager::new(MessageHandler {
 181                 chan_handler: channelmanager.clone(),
 182                 route_handler: router.clone(),
 183         }, our_network_key);
 184
 185         let mut should_forward = false;
 186         let mut payments_received = Vec::new();
 187         let mut payments_sent = 0;
 188         let mut pending_funding_generation: Vec<([u8; 32], u64, Script)> = Vec::new();
 189         let mut pending_funding_signatures = HashMap::new();
 190         let mut pending_funding_relay = Vec::new();
 191
 192         loop {
 193                 match get_slice!(1)[0] {
 194                         0 => {
 195                                 let mut new_id = 0;
 196                                 for i in 1..256 {
 197                                         if !peers.borrow()[i-1] {
 198                                                 new_id = i;
 199                                                 break;
 200                                         }
 201                                 }
 202                                 if new_id == 0 { return; }
 203                                 peers.borrow_mut()[new_id - 1] = true;
 204                                 handler.new_outbound_connection(get_pubkey!(), Peer{id: (new_id - 1) as u8, peers_connected: &peers}).unwrap();
 205                         },
 206                         1 => {
 207                                 let mut new_id = 0;
 208                                 for i in 1..256 {
 209                                         if !peers.borrow()[i-1] {
 210                                                 new_id = i;
 211                                                 break;
 212                                         }
 213                                 }
 214                                 if new_id == 0 { return; }
 215                                 peers.borrow_mut()[new_id - 1] = true;
 216                                 handler.new_inbound_connection(Peer{id: (new_id - 1) as u8, peers_connected: &peers}).unwrap();
 217                         },
 218                         2 => {
 219                                 let peer_id = get_slice!(1)[0];
 220                                 if !peers.borrow()[peer_id as usize] { return; }
 221                                 peers.borrow_mut()[peer_id as usize] = false;
 222                                 handler.disconnect_event(&Peer{id: peer_id, peers_connected: &peers});
 223                         },
 224                         3 => {
 225                                 let peer_id = get_slice!(1)[0];
 226                                 if !peers.borrow()[peer_id as usize] { return; }
 227                                 match handler.read_event(&mut Peer{id: peer_id, peers_connected: &peers}, get_slice!(get_slice!(1)[0]).to_vec()) {
 228                                         Ok(res) => assert!(!res),
 229                                         Err(_) => { peers.borrow_mut()[peer_id as usize] = false; }
 230                                 }
 231                         },
 232                         4 => {
 233                                 let value = slice_to_be24(get_slice!(3)) as u64;
 234                                 let route = match router.get_route(&get_pubkey!(), None, &Vec::new(), value, 42) {
 235                                         Ok(route) => route,
 236                                         Err(_) => return,
 237                                 };
 238                                 let mut payment_hash = [0; 32];
 239                                 payment_hash[0..8].copy_from_slice(&be64_to_array(payments_sent));
 240                                 let mut sha = Sha256::new();
 241                                 sha.input(&payment_hash);
 242                                 sha.result(&mut payment_hash);
 243                                 for i in 1..32 { payment_hash[i] = 0; }
 244                                 payments_sent += 1;
 245                                 match channelmanager.send_payment(route, payment_hash) {
 246                                         Ok(_) => {},
 247                                         Err(_) => return,
 248                                 }
 249                         },
 250                         5 => {
 251                                 let peer_id = get_slice!(1)[0];
 252                                 if !peers.borrow()[peer_id as usize] { return; }
 253                                 let their_key = get_pubkey!();
 254                                 let chan_value = slice_to_be24(get_slice!(3)) as u64;
 255                                 if channelmanager.create_channel(their_key, chan_value, 0).is_err() { return; }
 256                         },
 257                         6 => {
 258                                 let mut channels = channelmanager.list_channels();
 259                                 let channel_id = get_slice!(1)[0] as usize;
 260                                 if channel_id >= channels.len() { return; }
 261                                 channels.sort_by(|a, b| { a.channel_id.cmp(&b.channel_id) });
 262                                 if channelmanager.close_channel(&channels[channel_id].channel_id).is_err() { return; }
 263                         },
 264                         7 => {
 265                                 if should_forward {
 266                                         channelmanager.process_pending_htlc_forward();
 267                                         handler.process_events();
 268                                         should_forward = false;
 269                                 }
 270                         },
 271                         8 => {
 272                                 for payment in payments_received.drain(..) {
 273                                         let mut payment_preimage = None;
 274                                         for i in 0..payments_sent {
 275                                                 let mut payment_hash = [0; 32];
 276                                                 payment_hash[0..8].copy_from_slice(&be64_to_array(i));
 277                                                 let mut sha = Sha256::new();
 278                                                 sha.input(&payment_hash);
 279                                                 sha.result(&mut payment_hash);
 280                                                 for i in 1..32 { payment_hash[i] = 0; }
 281                                                 if payment_hash == payment {
 282                                                         payment_hash = [0; 32];
 283                                                         payment_hash[0..8].copy_from_slice(&be64_to_array(i));
 284                                                         payment_preimage = Some(payment_hash);
 285                                                         break;
 286                                                 }
 287                                         }
 288                                         channelmanager.claim_funds(payment_preimage.unwrap());
 289                                 }
 290                         },
 291                         9 => {
 292                                 for payment in payments_received.drain(..) {
 293                                         channelmanager.fail_htlc_backwards(&payment);
 294                                 }
 295                         },
 296                         10 => {
 297                                 for funding_generation in  pending_funding_generation.drain(..) {
 298                                         let mut tx = Transaction { version: 0, lock_time: 0, input: Vec::new(), output: vec![TxOut {
 299                                                         value: funding_generation.1, script_pubkey: funding_generation.2,
 300                                                 }] };
 301                                         let funding_output = OutPoint::new(Sha256dHash::from_data(&serialize(&tx).unwrap()[..]), 0);
 302                                         channelmanager.funding_transaction_generated(&funding_generation.0, funding_output.clone());
 303                                         pending_funding_signatures.insert(funding_output, tx);
 304                                 }
 305                         },
 306                         11 => {
 307                                 if !pending_funding_relay.is_empty() {
 308                                         let mut txn = Vec::with_capacity(pending_funding_relay.len());
 309                                         let mut txn_idxs = Vec::with_capacity(pending_funding_relay.len());
 310                                         for (idx, tx) in pending_funding_relay.iter().enumerate() {
 311                                                 txn.push(tx);
 312                                                 txn_idxs.push(idx as u32 + 1);
 313                                         }
 314
 315                                         let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 316                                         channelmanager.block_connected(&header, 1, &txn[..], &txn_idxs[..]);
 317                                         txn.clear();
 318                                         txn_idxs.clear();
 319                                         for i in 2..100 {
 320                                                 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
 321                                                 channelmanager.block_connected(&header, i, &txn[..], &txn_idxs[..]);
 322                                         }
 323                                 }
 324                                 pending_funding_relay.clear();
 325                         },
 326                         _ => return,
 327                 }
 328                 for event in handler.get_and_clear_pending_events() {
 329                         match event {
 330                                 Event::FundingGenerationReady { temporary_channel_id, channel_value_satoshis, output_script, .. } => {
 331                                         pending_funding_generation.push((temporary_channel_id, channel_value_satoshis, output_script));
 332                                 },
 333                                 Event::FundingBroadcastSafe { funding_txo, .. } => {
 334                                         pending_funding_relay.push(pending_funding_signatures.remove(&funding_txo).unwrap());
 335                                 },
 336                                 Event::PaymentReceived { payment_hash, .. } => {
 337                                         payments_received.push(payment_hash);
 338                                 },
 339                                 Event::PaymentSent {..} => {},
 340                                 Event::PaymentFailed {..} => {},
 341
 342                                 Event::PendingHTLCsForwardable {..} => {
 343                                         should_forward = true;
 344                                 },
 345                                 _ => panic!("Unknown event"),
 346                         }
 347                 }
 348         }
 349 }
 350
 351 #[cfg(feature = "afl")]
 352 extern crate afl;
 353 #[cfg(feature = "afl")]
 354 fn main() {
 355         afl::read_stdio_bytes(|data| {
 356                 do_test(&data);
 357         });
 358 }
 359
 360 #[cfg(feature = "honggfuzz")]
 361 #[macro_use] extern crate honggfuzz;
 362 #[cfg(feature = "honggfuzz")]
 363 fn main() {
 364         loop {
 365                 fuzz!(|data| {
 366                         do_test(data);
 367                 });
 368         }
 369 }
 370
 371 #[cfg(test)]
 372 mod tests {
 373         fn extend_vec_from_hex(hex: &str, out: &mut Vec<u8>) {
 374                 let mut b = 0;
 375                 for (idx, c) in hex.as_bytes().iter().enumerate() {
 376                         b <<= 4;
 377                         match *c {
 378                                 b'A'...b'F' => b |= c - b'A' + 10,
 379                                 b'a'...b'f' => b |= c - b'a' + 10,
 380                                 b'0'...b'9' => b |= c - b'0',
 381                                 _ => panic!("Bad hex"),
 382                         }
 383                         if (idx & 1) == 1 {
 384                                 out.push(b);
 385                                 b = 0;
 386                         }
 387                 }
 388         }
 389
 390         #[test]
 391         fn duplicate_crash() {
 392                 let mut a = Vec::new();
 393                 extend_vec_from_hex("00", &mut a);
 394                 super::do_test(&a);
 395         }
 396 }