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, ErrorAction};
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!($len)) {
118 msgs::DecodeError::UnknownRealmByte => return,
119 msgs::DecodeError::BadPublicKey => return,
120 msgs::DecodeError::BadSignature => return,
121 msgs::DecodeError::BadText => return,
122 msgs::DecodeError::ExtraAddressesPerType => return,
123 msgs::DecodeError::BadLengthDescriptor => return,
124 msgs::DecodeError::ShortRead => panic!("We picked the length..."),
130 macro_rules! decode_msg_with_len16 {
131 ($MsgType: path, $begin_len: expr, $factor: expr) => {
133 let extra_len = slice_to_be16(&match input.get_slice_nonadvancing($begin_len as usize + 2) {
134 Some(slice) => slice,
136 }[$begin_len..$begin_len + 2]);
137 match <($MsgType)>::decode(get_slice!($begin_len as usize + 2 + (extra_len as usize)*$factor)) {
140 msgs::DecodeError::UnknownRealmByte => return,
141 msgs::DecodeError::BadPublicKey => return,
142 msgs::DecodeError::BadSignature => return,
143 msgs::DecodeError::BadText => return,
144 msgs::DecodeError::ExtraAddressesPerType => return,
145 msgs::DecodeError::BadLengthDescriptor => return,
146 msgs::DecodeError::ShortRead => panic!("We picked the length..."),
153 let secp_ctx = Secp256k1::new();
154 macro_rules! get_pubkey {
156 match PublicKey::from_slice(&secp_ctx, get_slice!(33)) {
163 macro_rules! return_err {
172 macro_rules! chan_keys {
175 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(),
176 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(),
177 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(),
178 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(),
179 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(),
180 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(),
181 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(),
182 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],
187 let their_pubkey = get_pubkey!();
189 let mut tx = Transaction { version: 0, lock_time: 0, input: Vec::new(), output: Vec::new() };
191 let mut channel = if get_slice!(1)[0] != 0 {
192 let chan_value = slice_to_be24(get_slice!(3));
194 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)));
195 chan.get_open_channel(Sha256dHash::from(get_slice!(32)), &fee_est).unwrap();
196 let accept_chan = if get_slice!(1)[0] == 0 {
197 decode_msg_with_len16!(msgs::AcceptChannel, 270, 1)
199 decode_msg!(msgs::AcceptChannel, 270)
201 return_err!(chan.accept_channel(&accept_chan));
203 tx.output.push(TxOut{ value: chan_value, script_pubkey: chan.get_funding_redeemscript().to_v0_p2wsh() });
204 let funding_output = OutPoint::new(Sha256dHash::from_data(&serialize(&tx).unwrap()[..]), 0);
206 chan.get_outbound_funding_created(funding_output).unwrap();
207 let funding_signed = decode_msg!(msgs::FundingSigned, 32+64);
208 return_err!(chan.funding_signed(&funding_signed));
211 let open_chan = if get_slice!(1)[0] == 0 {
212 decode_msg_with_len16!(msgs::OpenChannel, 2*32+6*8+4+2*2+6*33+1, 1)
214 decode_msg!(msgs::OpenChannel, 2*32+6*8+4+2*2+6*33+1)
216 let mut chan = match Channel::new_from_req(&fee_est, chan_keys!(), their_pubkey, &open_chan, slice_to_be64(get_slice!(8)), false, get_slice!(1)[0] == 0) {
220 chan.get_accept_channel().unwrap();
222 tx.output.push(TxOut{ value: open_chan.funding_satoshis, script_pubkey: chan.get_funding_redeemscript().to_v0_p2wsh() });
223 let funding_output = OutPoint::new(Sha256dHash::from_data(&serialize(&tx).unwrap()[..]), 0);
225 let mut funding_created = decode_msg!(msgs::FundingCreated, 32+32+2+64);
226 funding_created.funding_txid = funding_output.txid.clone();
227 funding_created.funding_output_index = funding_output.index;
228 return_err!(chan.funding_created(&funding_created));
232 let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
233 channel.block_connected(&header, 1, &[&tx; 1], &[42; 1]);
235 header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
236 channel.block_connected(&header, i, &[&tx; 0], &[0; 0]);
239 let funding_locked = decode_msg!(msgs::FundingLocked, 32+33);
240 return_err!(channel.funding_locked(&funding_locked));
242 macro_rules! test_err {
246 Err(e) => match e.action {
248 Some(ErrorAction::UpdateFailHTLC {..}) => None,
249 Some(ErrorAction::DisconnectPeer {..}) => return,
250 Some(ErrorAction::IgnoreError) => None,
251 Some(ErrorAction::SendErrorMessage {..}) => None,
258 match get_slice!(1)[0] {
260 test_err!(channel.send_htlc(slice_to_be64(get_slice!(8)), [42; 32], slice_to_be32(get_slice!(4)), msgs::OnionPacket {
261 version: get_slice!(1)[0],
262 public_key: get_pubkey!(),
263 hop_data: [0; 20*65],
268 test_err!(channel.send_commitment());
271 let update_add_htlc = decode_msg!(msgs::UpdateAddHTLC, 32+8+8+32+4+4+33+20*65+32);
272 test_err!(channel.update_add_htlc(&update_add_htlc, PendingForwardHTLCInfo::dummy()));
275 let update_fulfill_htlc = decode_msg!(msgs::UpdateFulfillHTLC, 32 + 8 + 32);
276 test_err!(channel.update_fulfill_htlc(&update_fulfill_htlc));
279 let update_fail_htlc = decode_msg_with_len16!(msgs::UpdateFailHTLC, 32 + 8, 1);
280 test_err!(channel.update_fail_htlc(&update_fail_htlc, HTLCFailReason::dummy()));
283 let update_fail_malformed_htlc = decode_msg!(msgs::UpdateFailMalformedHTLC, 32+8+32+2);
284 test_err!(channel.update_fail_malformed_htlc(&update_fail_malformed_htlc, HTLCFailReason::dummy()));
287 let commitment_signed = decode_msg_with_len16!(msgs::CommitmentSigned, 32+64, 64);
288 test_err!(channel.commitment_signed(&commitment_signed));
291 let revoke_and_ack = decode_msg!(msgs::RevokeAndACK, 32+32+33);
292 test_err!(channel.revoke_and_ack(&revoke_and_ack));
295 let update_fee = decode_msg!(msgs::UpdateFee, 32+4);
296 test_err!(channel.update_fee(&fee_est, &update_fee));
299 let shutdown = decode_msg_with_len16!(msgs::Shutdown, 32, 1);
300 test_err!(channel.shutdown(&fee_est, &shutdown));
301 if channel.is_shutdown() { return; }
304 let closing_signed = decode_msg!(msgs::ClosingSigned, 32+8+64);
305 let sign_res = test_err!(channel.closing_signed(&fee_est, &closing_signed));
306 if sign_res.is_some() && sign_res.unwrap().1.is_some() {
307 assert!(channel.is_shutdown());
316 #[cfg(feature = "afl")]
318 #[cfg(feature = "afl")]
320 afl::read_stdio_bytes(|data| {
325 #[cfg(feature = "honggfuzz")]
326 #[macro_use] extern crate honggfuzz;
327 #[cfg(feature = "honggfuzz")]
338 fn extend_vec_from_hex(hex: &str, out: &mut Vec<u8>) {
340 for (idx, c) in hex.as_bytes().iter().enumerate() {
343 b'A'...b'F' => b |= c - b'A' + 10,
344 b'a'...b'f' => b |= c - b'a' + 10,
345 b'0'...b'9' => b |= c - b'0',
346 _ => panic!("Bad hex"),
356 fn duplicate_crash() {
357 let mut a = Vec::new();
358 extend_vec_from_hex("00", &mut a);