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;
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::util::reset_rng_state;
17 use secp256k1::key::PublicKey;
18 use secp256k1::Secp256k1;
20 use std::sync::atomic::{AtomicUsize,Ordering};
23 pub fn slice_to_be16(v: &[u8]) -> u16 {
24 ((v[0] as u16) << 8*1) |
25 ((v[1] as u16) << 8*0)
29 pub fn slice_to_be32(v: &[u8]) -> u32 {
30 ((v[0] as u32) << 8*3) |
31 ((v[1] as u32) << 8*2) |
32 ((v[2] as u32) << 8*1) |
33 ((v[3] as u32) << 8*0)
37 pub fn slice_to_be64(v: &[u8]) -> u64 {
38 ((v[0] as u64) << 8*7) |
39 ((v[1] as u64) << 8*6) |
40 ((v[2] as u64) << 8*5) |
41 ((v[3] as u64) << 8*4) |
42 ((v[4] as u64) << 8*3) |
43 ((v[5] as u64) << 8*2) |
44 ((v[6] as u64) << 8*1) |
45 ((v[7] as u64) << 8*0)
49 fn slice_to_be24(v: &[u8]) -> u64 {
50 //TODO: We should probably be returning a Result for channel creation, not panic!()ing on
52 ((v[0] as u64) << 8*2) |
53 ((v[1] as u64) << 8*1) |
54 ((v[2] as u64) << 8*0)
57 struct InputData<'a> {
59 read_pos: AtomicUsize,
61 impl<'a> InputData<'a> {
62 fn get_slice(&self, len: usize) -> Option<&'a [u8]> {
63 let old_pos = self.read_pos.fetch_add(len, Ordering::AcqRel);
64 if self.data.len() < old_pos + len {
67 Some(&self.data[old_pos..old_pos + len])
69 fn get_slice_nonadvancing(&self, len: usize) -> Option<&'a [u8]> {
70 let old_pos = self.read_pos.load(Ordering::Acquire);
71 if self.data.len() < old_pos + len {
74 Some(&self.data[old_pos..old_pos + len])
78 struct FuzzEstimator<'a> {
79 input: &'a InputData<'a>,
81 impl<'a> FeeEstimator for FuzzEstimator<'a> {
82 fn get_est_sat_per_vbyte(&self, _: ConfirmationTarget) -> u64 {
83 //TODO: We should actually be testing at least much more than 64k...
84 match self.input.get_slice(2) {
85 Some(slice) => slice_to_be16(slice) as u64,
92 pub fn do_test(data: &[u8]) {
95 let input = InputData {
97 read_pos: AtomicUsize::new(0),
99 let fee_est = FuzzEstimator {
103 macro_rules! get_slice {
105 match input.get_slice($len as usize) {
106 Some(slice) => slice,
112 macro_rules! decode_msg {
113 ($MsgType: path, $len: expr) => {
114 match <($MsgType)>::decode(get_slice!($len)) {
117 msgs::DecodeError::UnknownRealmByte => return,
118 msgs::DecodeError::BadPublicKey => return,
119 msgs::DecodeError::BadSignature => return,
120 msgs::DecodeError::ExtraAddressesPerType => return,
121 msgs::DecodeError::WrongLength => panic!("We picked the length..."),
127 macro_rules! decode_msg_with_len16 {
128 ($MsgType: path, $begin_len: expr, $factor: expr) => {
130 let extra_len = slice_to_be16(&match input.get_slice_nonadvancing($begin_len as usize + 2) {
131 Some(slice) => slice,
133 }[$begin_len..$begin_len + 2]);
134 match <($MsgType)>::decode(get_slice!($begin_len as usize + 2 + (extra_len as usize)*$factor)) {
137 msgs::DecodeError::UnknownRealmByte => return,
138 msgs::DecodeError::BadPublicKey => return,
139 msgs::DecodeError::BadSignature => return,
140 msgs::DecodeError::ExtraAddressesPerType => return,
141 msgs::DecodeError::WrongLength => panic!("We picked the length..."),
148 let secp_ctx = Secp256k1::new();
149 macro_rules! get_pubkey {
151 match PublicKey::from_slice(&secp_ctx, get_slice!(33)) {
158 macro_rules! return_err {
167 let their_pubkey = get_pubkey!();
169 let mut tx = Transaction { version: 0, lock_time: 0, input: Vec::new(), output: Vec::new() };
171 let mut channel = if get_slice!(1)[0] != 0 {
172 let chan_value = slice_to_be24(get_slice!(3));
173 let mut chan = Channel::new_outbound(&fee_est, their_pubkey, chan_value, get_slice!(1)[0] == 0, slice_to_be64(get_slice!(8)));
174 chan.get_open_channel(Sha256dHash::from(get_slice!(32)), &fee_est).unwrap();
175 let accept_chan = if get_slice!(1)[0] == 0 {
176 decode_msg_with_len16!(msgs::AcceptChannel, 270, 1)
178 decode_msg!(msgs::AcceptChannel, 270)
180 return_err!(chan.accept_channel(&accept_chan));
182 tx.output.push(TxOut{ value: chan_value, script_pubkey: chan.get_funding_redeemscript().to_v0_p2wsh() });
183 let funding_output = (Sha256dHash::from_data(&serialize(&tx).unwrap()[..]), 0);
185 chan.get_outbound_funding_created(funding_output.0.clone(), funding_output.1).unwrap();
186 let funding_signed = decode_msg!(msgs::FundingSigned, 32+64);
187 return_err!(chan.funding_signed(&funding_signed));
190 let open_chan = if get_slice!(1)[0] == 0 {
191 decode_msg_with_len16!(msgs::OpenChannel, 2*32+6*8+4+2*2+6*33+1, 1)
193 decode_msg!(msgs::OpenChannel, 2*32+6*8+4+2*2+6*33+1)
195 let mut chan = match Channel::new_from_req(&fee_est, their_pubkey, &open_chan, slice_to_be64(get_slice!(8)), get_slice!(1)[0] == 0) {
199 chan.get_accept_channel().unwrap();
201 tx.output.push(TxOut{ value: open_chan.funding_satoshis, script_pubkey: chan.get_funding_redeemscript().to_v0_p2wsh() });
202 let funding_output = (Sha256dHash::from_data(&serialize(&tx).unwrap()[..]), 0);
204 let mut funding_created = decode_msg!(msgs::FundingCreated, 32+32+2+64);
205 funding_created.funding_txid = funding_output.0.clone();
206 funding_created.funding_output_index = funding_output.1;
207 return_err!(chan.funding_created(&funding_created));
211 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
212 channel.block_connected(&header, 1, &[&tx; 1], &[42; 1]);
214 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
215 channel.block_connected(&header, i, &[&tx; 0], &[0; 0]);
218 let funding_locked = decode_msg!(msgs::FundingLocked, 32+33);
219 return_err!(channel.funding_locked(&funding_locked));
222 match get_slice!(1)[0] {
224 return_err!(channel.send_htlc(slice_to_be64(get_slice!(8)), [42; 32], slice_to_be32(get_slice!(4)), msgs::OnionPacket {
225 version: get_slice!(1)[0],
226 public_key: get_pubkey!(),
227 hop_data: [0; 20*65],
232 return_err!(channel.send_commitment());
235 let update_add_htlc = decode_msg!(msgs::UpdateAddHTLC, 32+8+8+32+4+4+33+20*65+32);
236 return_err!(channel.update_add_htlc(&update_add_htlc, PendingForwardHTLCInfo::dummy()));
239 let update_fulfill_htlc = decode_msg!(msgs::UpdateFulfillHTLC, 32 + 8 + 32);
240 return_err!(channel.update_fulfill_htlc(&update_fulfill_htlc));
243 let update_fail_htlc = decode_msg_with_len16!(msgs::UpdateFailHTLC, 32 + 8, 1);
244 return_err!(channel.update_fail_htlc(&update_fail_htlc, HTLCFailReason::dummy()));
247 let update_fail_malformed_htlc = decode_msg!(msgs::UpdateFailMalformedHTLC, 32+8+32+2);
248 return_err!(channel.update_fail_malformed_htlc(&update_fail_malformed_htlc, HTLCFailReason::dummy()));
251 let commitment_signed = decode_msg_with_len16!(msgs::CommitmentSigned, 32+64, 64);
252 return_err!(channel.commitment_signed(&commitment_signed));
255 let revoke_and_ack = decode_msg!(msgs::RevokeAndACK, 32+32+33);
256 return_err!(channel.revoke_and_ack(&revoke_and_ack));
259 let update_fee = decode_msg!(msgs::UpdateFee, 32+4);
260 return_err!(channel.update_fee(&fee_est, &update_fee));
263 let shutdown = decode_msg_with_len16!(msgs::Shutdown, 32, 1);
264 return_err!(channel.shutdown(&fee_est, &shutdown));
267 let closing_signed = decode_msg!(msgs::ClosingSigned, 32+8+64);
268 return_err!(channel.closing_signed(&fee_est, &closing_signed));
275 #[cfg(feature = "afl")]
277 #[cfg(feature = "afl")]
279 afl::read_stdio_bytes(|data| {
284 #[cfg(feature = "honggfuzz")]
285 #[macro_use] extern crate honggfuzz;
286 #[cfg(feature = "honggfuzz")]
297 fn extend_vec_from_hex(hex: &str, out: &mut Vec<u8>) {
299 for (idx, c) in hex.as_bytes().iter().enumerate() {
302 b'A'...b'F' => b |= c - b'A' + 10,
303 b'a'...b'f' => b |= c - b'a' + 10,
304 b'0'...b'9' => b |= c - b'0',
305 _ => panic!("Bad hex"),
315 fn duplicate_crash() {
316 let mut a = Vec::new();
317 extend_vec_from_hex("00", &mut a);