2 extern crate lightning;
3 extern crate secp256k1;
5 use bitcoin::blockdata::block::BlockHeader;
6 use bitcoin::blockdata::transaction::{Transaction, TxOut};
7 use bitcoin::util::hash::Sha256dHash;
8 use bitcoin::network::serialize::{serialize, BitcoinHash};
10 use lightning::ln::channel::{Channel, ChannelKeys};
11 use lightning::ln::channelmanager::{HTLCFailReason, PendingForwardHTLCInfo};
12 use lightning::ln::msgs;
13 use lightning::ln::msgs::MsgDecodable;
14 use lightning::chain::chaininterface::{FeeEstimator, ConfirmationTarget};
15 use lightning::chain::transaction::OutPoint;
16 use lightning::util::reset_rng_state;
18 use secp256k1::key::{PublicKey, SecretKey};
19 use secp256k1::Secp256k1;
21 use std::sync::atomic::{AtomicUsize,Ordering};
24 pub fn slice_to_be16(v: &[u8]) -> u16 {
25 ((v[0] as u16) << 8*1) |
26 ((v[1] as u16) << 8*0)
30 pub fn slice_to_be32(v: &[u8]) -> u32 {
31 ((v[0] as u32) << 8*3) |
32 ((v[1] as u32) << 8*2) |
33 ((v[2] as u32) << 8*1) |
34 ((v[3] as u32) << 8*0)
38 pub fn slice_to_be64(v: &[u8]) -> u64 {
39 ((v[0] as u64) << 8*7) |
40 ((v[1] as u64) << 8*6) |
41 ((v[2] as u64) << 8*5) |
42 ((v[3] as u64) << 8*4) |
43 ((v[4] as u64) << 8*3) |
44 ((v[5] as u64) << 8*2) |
45 ((v[6] as u64) << 8*1) |
46 ((v[7] as u64) << 8*0)
50 fn slice_to_be24(v: &[u8]) -> u64 {
51 //TODO: We should probably be returning a Result for channel creation, not panic!()ing on
53 ((v[0] as u64) << 8*2) |
54 ((v[1] as u64) << 8*1) |
55 ((v[2] as u64) << 8*0)
58 struct InputData<'a> {
60 read_pos: AtomicUsize,
62 impl<'a> InputData<'a> {
63 fn get_slice(&self, len: usize) -> Option<&'a [u8]> {
64 let old_pos = self.read_pos.fetch_add(len, Ordering::AcqRel);
65 if self.data.len() < old_pos + len {
68 Some(&self.data[old_pos..old_pos + len])
70 fn get_slice_nonadvancing(&self, len: usize) -> Option<&'a [u8]> {
71 let old_pos = self.read_pos.load(Ordering::Acquire);
72 if self.data.len() < old_pos + len {
75 Some(&self.data[old_pos..old_pos + len])
79 struct FuzzEstimator<'a> {
80 input: &'a InputData<'a>,
82 impl<'a> FeeEstimator for FuzzEstimator<'a> {
83 fn get_est_sat_per_1000_weight(&self, _: ConfirmationTarget) -> u64 {
84 //TODO: We should actually be testing at least much more than 64k...
85 match self.input.get_slice(2) {
86 Some(slice) => slice_to_be16(slice) as u64 * 250,
93 pub fn do_test(data: &[u8]) {
96 let input = InputData {
98 read_pos: AtomicUsize::new(0),
100 let fee_est = FuzzEstimator {
104 macro_rules! get_slice {
106 match input.get_slice($len as usize) {
107 Some(slice) => slice,
113 macro_rules! decode_msg {
114 ($MsgType: path, $len: expr) => {
115 match <($MsgType)>::decode(get_slice!($len)) {
118 msgs::DecodeError::UnknownRealmByte => return,
119 msgs::DecodeError::BadPublicKey => return,
120 msgs::DecodeError::BadSignature => return,
121 msgs::DecodeError::BadText => return,
122 msgs::DecodeError::ExtraAddressesPerType => return,
123 msgs::DecodeError::ShortRead => panic!("We picked the length..."),
129 macro_rules! decode_msg_with_len16 {
130 ($MsgType: path, $begin_len: expr, $factor: expr) => {
132 let extra_len = slice_to_be16(&match input.get_slice_nonadvancing($begin_len as usize + 2) {
133 Some(slice) => slice,
135 }[$begin_len..$begin_len + 2]);
136 match <($MsgType)>::decode(get_slice!($begin_len as usize + 2 + (extra_len as usize)*$factor)) {
139 msgs::DecodeError::UnknownRealmByte => return,
140 msgs::DecodeError::BadPublicKey => return,
141 msgs::DecodeError::BadSignature => return,
142 msgs::DecodeError::BadText => return,
143 msgs::DecodeError::ExtraAddressesPerType => return,
144 msgs::DecodeError::ShortRead => panic!("We picked the length..."),
151 let secp_ctx = Secp256k1::new();
152 macro_rules! get_pubkey {
154 match PublicKey::from_slice(&secp_ctx, get_slice!(33)) {
161 macro_rules! return_err {
170 macro_rules! chan_keys {
173 funding_key: SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
174 revocation_base_key: SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
175 payment_base_key: SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
176 delayed_payment_base_key: SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
177 htlc_base_key: SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
178 channel_close_key: SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
179 channel_monitor_claim_key: SecretKey::from_slice(&secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
180 commitment_seed: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
185 let their_pubkey = get_pubkey!();
187 let mut tx = Transaction { version: 0, lock_time: 0, input: Vec::new(), output: Vec::new() };
189 let mut channel = if get_slice!(1)[0] != 0 {
190 let chan_value = slice_to_be24(get_slice!(3));
192 let mut chan = Channel::new_outbound(&fee_est, chan_keys!(), their_pubkey, chan_value, get_slice!(1)[0] == 0, slice_to_be64(get_slice!(8)));
193 chan.get_open_channel(Sha256dHash::from(get_slice!(32)), &fee_est).unwrap();
194 let accept_chan = if get_slice!(1)[0] == 0 {
195 decode_msg_with_len16!(msgs::AcceptChannel, 270, 1)
197 decode_msg!(msgs::AcceptChannel, 270)
199 return_err!(chan.accept_channel(&accept_chan));
201 tx.output.push(TxOut{ value: chan_value, script_pubkey: chan.get_funding_redeemscript().to_v0_p2wsh() });
202 let funding_output = OutPoint::new(Sha256dHash::from_data(&serialize(&tx).unwrap()[..]), 0);
204 chan.get_outbound_funding_created(funding_output).unwrap();
205 let funding_signed = decode_msg!(msgs::FundingSigned, 32+64);
206 return_err!(chan.funding_signed(&funding_signed));
209 let open_chan = if get_slice!(1)[0] == 0 {
210 decode_msg_with_len16!(msgs::OpenChannel, 2*32+6*8+4+2*2+6*33+1, 1)
212 decode_msg!(msgs::OpenChannel, 2*32+6*8+4+2*2+6*33+1)
214 let mut chan = match Channel::new_from_req(&fee_est, chan_keys!(), their_pubkey, &open_chan, slice_to_be64(get_slice!(8)), get_slice!(1)[0] == 0) {
218 chan.get_accept_channel().unwrap();
220 tx.output.push(TxOut{ value: open_chan.funding_satoshis, script_pubkey: chan.get_funding_redeemscript().to_v0_p2wsh() });
221 let funding_output = OutPoint::new(Sha256dHash::from_data(&serialize(&tx).unwrap()[..]), 0);
223 let mut funding_created = decode_msg!(msgs::FundingCreated, 32+32+2+64);
224 funding_created.funding_txid = funding_output.txid.clone();
225 funding_created.funding_output_index = funding_output.index;
226 return_err!(chan.funding_created(&funding_created));
230 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
231 channel.block_connected(&header, 1, &[&tx; 1], &[42; 1]);
233 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
234 channel.block_connected(&header, i, &[&tx; 0], &[0; 0]);
237 let funding_locked = decode_msg!(msgs::FundingLocked, 32+33);
238 return_err!(channel.funding_locked(&funding_locked));
241 match get_slice!(1)[0] {
243 return_err!(channel.send_htlc(slice_to_be64(get_slice!(8)), [42; 32], slice_to_be32(get_slice!(4)), msgs::OnionPacket {
244 version: get_slice!(1)[0],
245 public_key: get_pubkey!(),
246 hop_data: [0; 20*65],
251 return_err!(channel.send_commitment());
254 let update_add_htlc = decode_msg!(msgs::UpdateAddHTLC, 32+8+8+32+4+4+33+20*65+32);
255 return_err!(channel.update_add_htlc(&update_add_htlc, PendingForwardHTLCInfo::dummy()));
258 let update_fulfill_htlc = decode_msg!(msgs::UpdateFulfillHTLC, 32 + 8 + 32);
259 return_err!(channel.update_fulfill_htlc(&update_fulfill_htlc));
262 let update_fail_htlc = decode_msg_with_len16!(msgs::UpdateFailHTLC, 32 + 8, 1);
263 return_err!(channel.update_fail_htlc(&update_fail_htlc, HTLCFailReason::dummy()));
266 let update_fail_malformed_htlc = decode_msg!(msgs::UpdateFailMalformedHTLC, 32+8+32+2);
267 return_err!(channel.update_fail_malformed_htlc(&update_fail_malformed_htlc, HTLCFailReason::dummy()));
270 let commitment_signed = decode_msg_with_len16!(msgs::CommitmentSigned, 32+64, 64);
271 return_err!(channel.commitment_signed(&commitment_signed));
274 let revoke_and_ack = decode_msg!(msgs::RevokeAndACK, 32+32+33);
275 return_err!(channel.revoke_and_ack(&revoke_and_ack));
278 let update_fee = decode_msg!(msgs::UpdateFee, 32+4);
279 return_err!(channel.update_fee(&fee_est, &update_fee));
282 let shutdown = decode_msg_with_len16!(msgs::Shutdown, 32, 1);
283 return_err!(channel.shutdown(&fee_est, &shutdown));
284 if channel.is_shutdown() { return; }
287 let closing_signed = decode_msg!(msgs::ClosingSigned, 32+8+64);
288 if return_err!(channel.closing_signed(&fee_est, &closing_signed)).1.is_some() {
289 assert!(channel.is_shutdown());
298 #[cfg(feature = "afl")]
300 #[cfg(feature = "afl")]
302 afl::read_stdio_bytes(|data| {
307 #[cfg(feature = "honggfuzz")]
308 #[macro_use] extern crate honggfuzz;
309 #[cfg(feature = "honggfuzz")]
320 fn extend_vec_from_hex(hex: &str, out: &mut Vec<u8>) {
322 for (idx, c) in hex.as_bytes().iter().enumerate() {
325 b'A'...b'F' => b |= c - b'A' + 10,
326 b'a'...b'f' => b |= c - b'a' + 10,
327 b'0'...b'9' => b |= c - b'0',
328 _ => panic!("Bad hex"),
338 fn duplicate_crash() {
339 let mut a = Vec::new();
340 extend_vec_from_hex("00", &mut a);