use bitcoin::blockdata::script::{Script, Builder};
use bitcoin::blockdata::opcodes;
use bitcoin::consensus::encode::{self, Decodable, Encodable};
-use bitcoin::util::hash::{Hash160, BitcoinHash,Sha256dHash};
+use bitcoin::util::hash::{BitcoinHash,Sha256dHash};
use bitcoin::util::bip143;
-use crypto::digest::Digest;
+use bitcoin_hashes::Hash;
+use bitcoin_hashes::sha256::Hash as Sha256;
+use bitcoin_hashes::hash160::Hash as Hash160;
use secp256k1::{Secp256k1,Message,Signature};
use secp256k1::key::{SecretKey,PublicKey};
use ln::msgs::DecodeError;
use ln::chan_utils;
use ln::chan_utils::HTLCOutputInCommitment;
-use ln::channelmanager::HTLCSource;
+use ln::channelmanager::{HTLCSource, PaymentPreimage, PaymentHash};
+use ln::channel::{ACCEPTED_HTLC_SCRIPT_WEIGHT, OFFERED_HTLC_SCRIPT_WEIGHT};
use chain::chaininterface::{ChainListener, ChainWatchInterface, BroadcasterInterface};
use chain::transaction::OutPoint;
use chain::keysinterface::SpendableOutputDescriptor;
use util::logger::Logger;
use util::ser::{ReadableArgs, Readable, Writer, Writeable, WriterWriteAdaptor, U48};
-use util::sha2::Sha256;
use util::{byte_utils, events};
use std::collections::{HashMap, hash_map};
/// Simple structure send back by ManyChannelMonitor in case of HTLC detected onchain from a
/// forward channel and from which info are needed to update HTLC in a backward channel.
pub struct HTLCUpdate {
- pub(super) payment_hash: [u8; 32],
- pub(super) payment_preimage: Option<[u8; 32]>,
+ pub(super) payment_hash: PaymentHash,
+ pub(super) payment_preimage: Option<PaymentPreimage>,
pub(super) source: HTLCSource
}
chain_monitor: Arc<ChainWatchInterface>,
broadcaster: Arc<BroadcasterInterface>,
pending_events: Mutex<Vec<events::Event>>,
- pending_htlc_updated: Mutex<HashMap<[u8; 32], Vec<(HTLCSource, Option<[u8; 32]>)>>>,
+ pending_htlc_updated: Mutex<HashMap<PaymentHash, Vec<(HTLCSource, Option<PaymentPreimage>)>>>,
logger: Arc<Logger>,
}
/// network and done a full update_fail_htlc/commitment_signed dance (+ we've updated all our
/// copies of ChannelMonitors, including watchtowers).
pub(crate) const HTLC_FAIL_TIMEOUT_BLOCKS: u32 = 3;
+/// Number of blocks we wait on seeing a confirmed HTLC-Timeout or previous revoked commitment
+/// transaction before we fail corresponding inbound HTLCs. This prevents us from failing backwards
+/// and then getting a reorg resulting in us losing money.
+//TODO: We currently dont actually use this...we should
+pub(crate) const HTLC_FAIL_ANTI_REORG_DELAY: u32 = 6;
#[derive(Clone, PartialEq)]
enum Storage {
prev_latest_per_commitment_point: Option<PublicKey>,
latest_per_commitment_point: Option<PublicKey>,
funding_info: Option<(OutPoint, Script)>,
+ current_remote_commitment_txid: Option<Sha256dHash>,
+ prev_remote_commitment_txid: Option<Sha256dHash>,
},
Watchtower {
revocation_base_key: PublicKey,
delayed_payment_key: PublicKey,
feerate_per_kw: u64,
htlc_outputs: Vec<(HTLCOutputInCommitment, Signature, Signature)>,
- htlc_sources: Vec<([u8; 32], HTLCSource, Option<u32>)>,
+ htlc_sources: Vec<(PaymentHash, HTLCSource, Option<u32>)>,
}
const SERIALIZATION_VERSION: u8 = 1;
their_to_self_delay: Option<u16>,
old_secrets: [([u8; 32], u64); 49],
- remote_claimable_outpoints: HashMap<Sha256dHash, (Vec<HTLCOutputInCommitment>, Vec<([u8; 32], HTLCSource, Option<u32>)>)>,
+ remote_claimable_outpoints: HashMap<Sha256dHash, (Vec<HTLCOutputInCommitment>, Vec<(PaymentHash, HTLCSource, Option<u32>)>)>,
/// We cannot identify HTLC-Success or HTLC-Timeout transactions by themselves on the chain.
/// Nor can we figure out their commitment numbers without the commitment transaction they are
/// spending. Thus, in order to claim them via revocation key, we track all the remote
/// Maps payment_hash values to commitment numbers for remote transactions for non-revoked
/// remote transactions (ie should remain pretty small).
/// Serialized to disk but should generally not be sent to Watchtowers.
- remote_hash_commitment_number: HashMap<[u8; 32], u64>,
+ remote_hash_commitment_number: HashMap<PaymentHash, u64>,
// We store two local commitment transactions to avoid any race conditions where we may update
// some monitors (potentially on watchtowers) but then fail to update others, resulting in the
// deserialization
current_remote_commitment_number: u64,
- payment_preimages: HashMap<[u8; 32], [u8; 32]>,
+ payment_preimages: HashMap<PaymentHash, PaymentPreimage>,
destination_script: Script,
prev_latest_per_commitment_point: None,
latest_per_commitment_point: None,
funding_info: None,
+ current_remote_commitment_txid: None,
+ prev_remote_commitment_txid: None,
},
their_htlc_base_key: None,
their_delayed_payment_base_key: None,
let bitpos = bits - 1 - i;
if idx & (1 << bitpos) == (1 << bitpos) {
res[(bitpos / 8) as usize] ^= 1 << (bitpos & 7);
- let mut sha = Sha256::new();
- sha.input(&res);
- sha.result(&mut res);
+ res = Sha256::hash(&res).into_inner();
}
}
res
return Err(MonitorUpdateError("Previous secret did not match new one"));
}
}
+ if self.get_min_seen_secret() <= idx {
+ return Ok(());
+ }
self.old_secrets[pos as usize] = (secret, idx);
+ // Prune HTLCs from the previous remote commitment tx so we don't generate failure/fulfill
+ // events for now-revoked/fulfilled HTLCs.
+ // TODO: We should probably consider whether we're really getting the next secret here.
+ if let Storage::Local { ref mut prev_remote_commitment_txid, .. } = self.key_storage {
+ if let Some(txid) = prev_remote_commitment_txid.take() {
+ self.remote_claimable_outpoints.get_mut(&txid).unwrap().1 = Vec::new();
+ }
+ }
+
if !self.payment_preimages.is_empty() {
let local_signed_commitment_tx = self.current_local_signed_commitment_tx.as_ref().expect("Channel needs at least an initial commitment tx !");
let prev_local_signed_commitment_tx = self.prev_local_signed_commitment_tx.as_ref();
/// The monitor watches for it to be broadcasted and then uses the HTLC information (and
/// possibly future revocation/preimage information) to claim outputs where possible.
/// We cache also the mapping hash:commitment number to lighten pruning of old preimages by watchtowers.
- pub(super) fn provide_latest_remote_commitment_tx_info(&mut self, unsigned_commitment_tx: &Transaction, htlc_outputs: Vec<HTLCOutputInCommitment>, htlc_sources: Vec<([u8; 32], HTLCSource, Option<u32>)>, commitment_number: u64, their_revocation_point: PublicKey) {
+ pub(super) fn provide_latest_remote_commitment_tx_info(&mut self, unsigned_commitment_tx: &Transaction, htlc_outputs: Vec<HTLCOutputInCommitment>, htlc_sources: Vec<(PaymentHash, HTLCSource, Option<u32>)>, commitment_number: u64, their_revocation_point: PublicKey) {
// TODO: Encrypt the htlc_outputs data with the single-hash of the commitment transaction
// so that a remote monitor doesn't learn anything unless there is a malicious close.
// (only maybe, sadly we cant do the same for local info, as we need to be aware of
for ref htlc in &htlc_outputs {
self.remote_hash_commitment_number.insert(htlc.payment_hash, commitment_number);
}
- // We prune old claimable outpoints, useless to pass backward state when remote commitment
- // tx get revoked, optimize for storage
- for (_, htlc_data) in self.remote_claimable_outpoints.iter_mut() {
- htlc_data.1 = Vec::new();
+
+ let new_txid = unsigned_commitment_tx.txid();
+ log_trace!(self, "Tracking new remote commitment transaction with txid {} at commitment number {} with {} HTLC outputs", new_txid, commitment_number, htlc_outputs.len());
+ log_trace!(self, "New potential remote commitment transaction: {}", encode::serialize_hex(unsigned_commitment_tx));
+ if let Storage::Local { ref mut current_remote_commitment_txid, ref mut prev_remote_commitment_txid, .. } = self.key_storage {
+ *prev_remote_commitment_txid = current_remote_commitment_txid.take();
+ *current_remote_commitment_txid = Some(new_txid);
}
- self.remote_claimable_outpoints.insert(unsigned_commitment_tx.txid(), (htlc_outputs, htlc_sources));
+ self.remote_claimable_outpoints.insert(new_txid, (htlc_outputs, htlc_sources));
self.current_remote_commitment_number = commitment_number;
//TODO: Merge this into the other per-remote-transaction output storage stuff
match self.their_cur_revocation_points {
/// Panics if set_their_to_self_delay has never been called.
/// Also update Storage with latest local per_commitment_point to derive local_delayedkey in
/// case of onchain HTLC tx
- pub(super) fn provide_latest_local_commitment_tx_info(&mut self, signed_commitment_tx: Transaction, local_keys: chan_utils::TxCreationKeys, feerate_per_kw: u64, htlc_outputs: Vec<(HTLCOutputInCommitment, Signature, Signature)>, htlc_sources: Vec<([u8; 32], HTLCSource, Option<u32>)>) {
+ pub(super) fn provide_latest_local_commitment_tx_info(&mut self, signed_commitment_tx: Transaction, local_keys: chan_utils::TxCreationKeys, feerate_per_kw: u64, htlc_outputs: Vec<(HTLCOutputInCommitment, Signature, Signature)>, htlc_sources: Vec<(PaymentHash, HTLCSource, Option<u32>)>) {
assert!(self.their_to_self_delay.is_some());
self.prev_local_signed_commitment_tx = self.current_local_signed_commitment_tx.take();
self.current_local_signed_commitment_tx = Some(LocalSignedTx {
/// Provides a payment_hash->payment_preimage mapping. Will be automatically pruned when all
/// commitment_tx_infos which contain the payment hash have been revoked.
- pub(super) fn provide_payment_preimage(&mut self, payment_hash: &[u8; 32], payment_preimage: &[u8; 32]) {
+ pub(super) fn provide_payment_preimage(&mut self, payment_hash: &PaymentHash, payment_preimage: &PaymentPreimage) {
self.payment_preimages.insert(payment_hash.clone(), payment_preimage.clone());
}
U48(self.commitment_transaction_number_obscure_factor).write(writer)?;
match self.key_storage {
- Storage::Local { ref revocation_base_key, ref htlc_base_key, ref delayed_payment_base_key, ref payment_base_key, ref shutdown_pubkey, ref prev_latest_per_commitment_point, ref latest_per_commitment_point, ref funding_info } => {
+ Storage::Local { ref revocation_base_key, ref htlc_base_key, ref delayed_payment_base_key, ref payment_base_key, ref shutdown_pubkey, ref prev_latest_per_commitment_point, ref latest_per_commitment_point, ref funding_info, current_remote_commitment_txid, prev_remote_commitment_txid } => {
writer.write_all(&[0; 1])?;
writer.write_all(&revocation_base_key[..])?;
writer.write_all(&htlc_base_key[..])?;
debug_assert!(false, "Try to serialize a useless Local monitor !");
},
}
+ if let Some(ref txid) = current_remote_commitment_txid {
+ writer.write_all(&[1; 1])?;
+ writer.write_all(&txid[..])?;
+ } else {
+ writer.write_all(&[0; 1])?;
+ }
+ if let Some(ref txid) = prev_remote_commitment_txid {
+ writer.write_all(&[1; 1])?;
+ writer.write_all(&txid[..])?;
+ } else {
+ writer.write_all(&[0; 1])?;
+ }
},
Storage::Watchtower { .. } => unimplemented!(),
}
writer.write_all(&[$htlc_output.offered as u8; 1])?;
writer.write_all(&byte_utils::be64_to_array($htlc_output.amount_msat))?;
writer.write_all(&byte_utils::be32_to_array($htlc_output.cltv_expiry))?;
- writer.write_all(&$htlc_output.payment_hash)?;
+ writer.write_all(&$htlc_output.payment_hash.0[..])?;
writer.write_all(&byte_utils::be32_to_array($htlc_output.transaction_output_index))?;
}
}
if for_local_storage {
writer.write_all(&byte_utils::be64_to_array(self.remote_hash_commitment_number.len() as u64))?;
for (ref payment_hash, commitment_number) in self.remote_hash_commitment_number.iter() {
- writer.write_all(*payment_hash)?;
+ writer.write_all(&payment_hash.0[..])?;
writer.write_all(&byte_utils::be48_to_array(*commitment_number))?;
}
} else {
writer.write_all(&byte_utils::be64_to_array(self.payment_preimages.len() as u64))?;
for payment_preimage in self.payment_preimages.values() {
- writer.write_all(payment_preimage)?;
+ writer.write_all(&payment_preimage.0[..])?;
}
self.last_block_hash.write(writer)?;
/// HTLC-Success/HTLC-Timeout transactions.
/// Return updates for HTLC pending in the channel and failed automatically by the broadcast of
/// revoked remote commitment tx
- fn check_spend_remote_transaction(&mut self, tx: &Transaction, height: u32) -> (Vec<Transaction>, (Sha256dHash, Vec<TxOut>), Vec<SpendableOutputDescriptor>, Vec<(HTLCSource, Option<[u8;32]>, [u8;32])>) {
+ fn check_spend_remote_transaction(&mut self, tx: &Transaction, height: u32) -> (Vec<Transaction>, (Sha256dHash, Vec<TxOut>), Vec<SpendableOutputDescriptor>, Vec<(HTLCSource, Option<PaymentPreimage>, PaymentHash)>) {
// Most secp and related errors trying to create keys means we have no hope of constructing
// a spend transaction...so we return no transactions to broadcast
let mut txn_to_broadcast = Vec::new();
let local_payment_p2wpkh = if let Some(payment_key) = local_payment_key {
// Note that the Network here is ignored as we immediately drop the address for the
// script_pubkey version.
- let payment_hash160 = Hash160::from_data(&PublicKey::from_secret_key(&self.secp_ctx, &payment_key).serialize());
+ let payment_hash160 = Hash160::hash(&PublicKey::from_secret_key(&self.secp_ctx, &payment_key).serialize());
Some(Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0).push_slice(&payment_hash160[..]).into_script())
} else { None };
if !inputs.is_empty() || !txn_to_broadcast.is_empty() { // ie we're confident this is actually ours
// We're definitely a remote commitment transaction!
+ log_trace!(self, "Got broadcast of revoked remote commitment transaction, generating general spend tx with {} inputs and {} other txn to broadcast", inputs.len(), txn_to_broadcast.len());
watch_outputs.append(&mut tx.output.clone());
self.remote_commitment_txn_on_chain.insert(commitment_txid, (commitment_number, tx.output.iter().map(|output| { output.script_pubkey.clone() }).collect()));
}
output: spend_tx.output[0].clone(),
});
txn_to_broadcast.push(spend_tx);
+
+ // TODO: We really should only fail backwards after our revocation claims have been
+ // confirmed, but we also need to do more other tracking of in-flight pre-confirm
+ // on-chain claims, so we can do that at the same time.
+ if let Storage::Local { ref current_remote_commitment_txid, ref prev_remote_commitment_txid, .. } = self.key_storage {
+ if let &Some(ref txid) = current_remote_commitment_txid {
+ if let Some(&(_, ref latest_outpoints)) = self.remote_claimable_outpoints.get(&txid) {
+ for &(ref payment_hash, ref source, _) in latest_outpoints.iter() {
+ log_trace!(self, "Failing HTLC with payment_hash {} from current remote commitment tx due to broadcast of revoked remote commitment transaction", log_bytes!(payment_hash.0));
+ htlc_updated.push(((*source).clone(), None, payment_hash.clone()));
+ }
+ }
+ }
+ if let &Some(ref txid) = prev_remote_commitment_txid {
+ if let Some(&(_, ref prev_outpoint)) = self.remote_claimable_outpoints.get(&txid) {
+ for &(ref payment_hash, ref source, _) in prev_outpoint.iter() {
+ log_trace!(self, "Failing HTLC with payment_hash {} from previous remote commitment tx due to broadcast of revoked remote commitment transaction", log_bytes!(payment_hash.0));
+ htlc_updated.push(((*source).clone(), None, payment_hash.clone()));
+ }
+ }
+ }
+ }
+ // No need to check local commitment txn, symmetric HTLCSource must be present as per-htlc data on remote commitment tx
} else if let Some(per_commitment_data) = per_commitment_option {
// While this isn't useful yet, there is a potential race where if a counterparty
// revokes a state at the same time as the commitment transaction for that state is
watch_outputs.append(&mut tx.output.clone());
self.remote_commitment_txn_on_chain.insert(commitment_txid, (commitment_number, tx.output.iter().map(|output| { output.script_pubkey.clone() }).collect()));
+ log_trace!(self, "Got broadcast of non-revoked remote commitment transaction {}", commitment_txid);
+
if let Some(revocation_points) = self.their_cur_revocation_points {
let revocation_point_option =
if revocation_points.0 == commitment_number { Some(&revocation_points.1) }
}),
};
let sighash_parts = bip143::SighashComponents::new(&single_htlc_tx);
- sign_input!(sighash_parts, single_htlc_tx.input[0], htlc.amount_msat / 1000, payment_preimage.to_vec());
+ sign_input!(sighash_parts, single_htlc_tx.input[0], htlc.amount_msat / 1000, payment_preimage.0.to_vec());
spendable_outputs.push(SpendableOutputDescriptor::StaticOutput {
outpoint: BitcoinOutPoint { txid: single_htlc_tx.txid(), vout: 0 },
output: single_htlc_tx.output[0].clone(),
txn_to_broadcast.push(single_htlc_tx);
}
}
+ if !htlc.offered {
+ // TODO: If the HTLC has already expired, potentially merge it with the
+ // rest of the claim transaction, as above.
+ let input = TxIn {
+ previous_output: BitcoinOutPoint {
+ txid: commitment_txid,
+ vout: htlc.transaction_output_index,
+ },
+ script_sig: Script::new(),
+ sequence: idx as u32,
+ witness: Vec::new(),
+ };
+ let mut timeout_tx = Transaction {
+ version: 2,
+ lock_time: htlc.cltv_expiry,
+ input: vec![input],
+ output: vec!(TxOut {
+ script_pubkey: self.destination_script.clone(),
+ value: htlc.amount_msat / 1000,
+ }),
+ };
+ let sighash_parts = bip143::SighashComponents::new(&timeout_tx);
+ sign_input!(sighash_parts, timeout_tx.input[0], htlc.amount_msat / 1000, vec![0]);
+ txn_to_broadcast.push(timeout_tx);
+ }
}
if inputs.is_empty() { return (txn_to_broadcast, (commitment_txid, watch_outputs), spendable_outputs, htlc_updated); } // Nothing to be done...probably a false positive/local tx
for input in spend_tx.input.iter_mut() {
let value = values_drain.next().unwrap();
- sign_input!(sighash_parts, input, value.0, value.1.to_vec());
+ sign_input!(sighash_parts, input, value.0, (value.1).0.to_vec());
}
spendable_outputs.push(SpendableOutputDescriptor::StaticOutput {
output: spend_tx.output[0].clone(),
});
txn_to_broadcast.push(spend_tx);
+
+ // TODO: We need to fail back HTLCs that were't included in the broadcast
+ // commitment transaction, either because they didn't meet dust or because a
+ // stale (but not yet revoked) commitment transaction was broadcast!
}
}
}
htlc_success_tx.input[0].witness.push(our_sig.serialize_der(&self.secp_ctx).to_vec());
htlc_success_tx.input[0].witness[2].push(SigHashType::All as u8);
- htlc_success_tx.input[0].witness.push(payment_preimage.to_vec());
+ htlc_success_tx.input[0].witness.push(payment_preimage.0.to_vec());
htlc_success_tx.input[0].witness.push(chan_utils::get_htlc_redeemscript_with_explicit_keys(htlc, &local_tx.a_htlc_key, &local_tx.b_htlc_key, &local_tx.revocation_key).into_bytes());
add_dynamic_output!(htlc_success_tx, 0);
/// Should not be used if check_spend_revoked_transaction succeeds.
fn check_spend_local_transaction(&self, tx: &Transaction, _height: u32) -> (Vec<Transaction>, Vec<SpendableOutputDescriptor>, (Sha256dHash, Vec<TxOut>)) {
let commitment_txid = tx.txid();
+ // TODO: If we find a match here we need to fail back HTLCs that were't included in the
+ // broadcast commitment transaction, either because they didn't meet dust or because they
+ // weren't yet included in our commitment transaction(s).
if let &Some(ref local_tx) = &self.current_local_signed_commitment_tx {
if local_tx.txid == commitment_txid {
match self.key_storage {
if tx.input[0].sequence == 0xFFFFFFFF && !tx.input[0].witness.is_empty() && tx.input[0].witness.last().unwrap().len() == 71 {
match self.key_storage {
Storage::Local { ref shutdown_pubkey, .. } => {
- let our_channel_close_key_hash = Hash160::from_data(&shutdown_pubkey.serialize());
+ let our_channel_close_key_hash = Hash160::hash(&shutdown_pubkey.serialize());
let shutdown_script = Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0).push_slice(&our_channel_close_key_hash[..]).into_script();
for (idx, output) in tx.output.iter().enumerate() {
if shutdown_script == output.script_pubkey {
}
}
- fn block_connected(&mut self, txn_matched: &[&Transaction], height: u32, block_hash: &Sha256dHash, broadcaster: &BroadcasterInterface)-> (Vec<(Sha256dHash, Vec<TxOut>)>, Vec<SpendableOutputDescriptor>, Vec<(HTLCSource, Option<[u8 ; 32]>, [u8; 32])>) {
+ fn block_connected(&mut self, txn_matched: &[&Transaction], height: u32, block_hash: &Sha256dHash, broadcaster: &BroadcasterInterface)-> (Vec<(Sha256dHash, Vec<TxOut>)>, Vec<SpendableOutputDescriptor>, Vec<(HTLCSource, Option<PaymentPreimage>, PaymentHash)>) {
let mut watch_outputs = Vec::new();
let mut spendable_outputs = Vec::new();
let mut htlc_updated = Vec::new();
}
pub(super) fn would_broadcast_at_height(&self, height: u32) -> bool {
+ // TODO: We need to consider HTLCs which weren't included in latest local commitment
+ // transaction (or in any of the latest two local commitment transactions). This probably
+ // needs to use the same logic as the revoked-tx-announe logic - checking the last two
+ // remote commitment transactions. This probably has implications for what data we need to
+ // store in local commitment transactions.
+ // TODO: We need to consider HTLCs which were below dust threshold here - while they don't
+ // strictly imply that we need to fail the channel, we need to go ahead and fail them back
+ // to the source, and if we don't fail the channel we will have to ensure that the next
+ // updates that peer sends us are update_fails, failing the channel if not. It's probably
+ // easier to just fail the channel as this case should be rare enough anyway.
if let Some(ref cur_local_tx) = self.current_local_signed_commitment_tx {
for &(ref htlc, _, _) in cur_local_tx.htlc_outputs.iter() {
// For inbound HTLCs which we know the preimage for, we have to ensure we hit the
/// Check if any transaction broadcasted is resolving HTLC output by a success or timeout on a local
/// or remote commitment tx, if so send back the source, preimage if found and payment_hash of resolved HTLC
- fn is_resolving_htlc_output(&mut self, tx: &Transaction) -> Vec<(HTLCSource, Option<[u8;32]>, [u8;32])> {
+ fn is_resolving_htlc_output(&mut self, tx: &Transaction) -> Vec<(HTLCSource, Option<PaymentPreimage>, PaymentHash)> {
let mut htlc_updated = Vec::new();
'outer_loop: for input in &tx.input {
let mut payment_data = None;
macro_rules! scan_commitment {
- ($htlc_outputs: expr, $htlc_sources: expr) => {
+ ($htlc_outputs: expr, $htlc_sources: expr, $source: expr) => {
for &(ref payment_hash, ref source, ref vout) in $htlc_sources.iter() {
if &Some(input.previous_output.vout) == vout {
+ log_trace!(self, "Input spending {}:{} resolves HTLC with payment hash {} from {}", input.previous_output.txid, input.previous_output.vout, log_bytes!(payment_hash.0), $source);
payment_data = Some((source.clone(), *payment_hash));
}
}
if payment_data.is_none() {
for htlc_output in $htlc_outputs {
- if input.previous_output.vout == htlc_output.transaction_output_index {
- log_info!(self, "Inbound HTLC timeout at {} from {} resolved by {}", input.previous_output.vout, input.previous_output.txid, tx.txid());
+ if input.previous_output.vout == htlc_output.transaction_output_index && !htlc_output.offered {
+ log_info!(self, "Input spending {}:{} in {} resolves inbound HTLC with timeout from {}", input.previous_output.txid, input.previous_output.vout, tx.txid(), $source);
+ continue 'outer_loop;
+ } else if input.previous_output.vout == htlc_output.transaction_output_index && tx.lock_time > 0 {
+ log_info!(self, "Input spending {}:{} in {} resolves offered HTLC with HTLC-timeout from {}", input.previous_output.txid, input.previous_output.vout, tx.txid(), $source);
continue 'outer_loop;
}
}
if let Some(ref current_local_signed_commitment_tx) = self.current_local_signed_commitment_tx {
if input.previous_output.txid == current_local_signed_commitment_tx.txid {
- scan_commitment!(current_local_signed_commitment_tx.htlc_outputs.iter().map(|&(ref a, _, _)| a), current_local_signed_commitment_tx.htlc_sources);
+ scan_commitment!(current_local_signed_commitment_tx.htlc_outputs.iter().map(|&(ref a, _, _)| a),
+ current_local_signed_commitment_tx.htlc_sources,
+ "our latest local commitment tx");
}
}
if let Some(ref prev_local_signed_commitment_tx) = self.prev_local_signed_commitment_tx {
if input.previous_output.txid == prev_local_signed_commitment_tx.txid {
- scan_commitment!(prev_local_signed_commitment_tx.htlc_outputs.iter().map(|&(ref a, _, _)| a), prev_local_signed_commitment_tx.htlc_sources);
+ scan_commitment!(prev_local_signed_commitment_tx.htlc_outputs.iter().map(|&(ref a, _, _)| a),
+ prev_local_signed_commitment_tx.htlc_sources,
+ "our latest local commitment tx");
}
}
if let Some(&(ref htlc_outputs, ref htlc_sources)) = self.remote_claimable_outpoints.get(&input.previous_output.txid) {
- scan_commitment!(htlc_outputs, htlc_sources);
+ scan_commitment!(htlc_outputs, htlc_sources, "remote commitment tx");
}
// If tx isn't solving htlc output from local/remote commitment tx and htlc isn't outbound we don't need
// to broadcast solving backward
if let Some((source, payment_hash)) = payment_data {
- let mut payment_preimage = [0; 32];
- if input.witness.len() == 5 && input.witness[4].len() == 138 {
- payment_preimage.copy_from_slice(&tx.input[0].witness[3]);
+ let mut payment_preimage = PaymentPreimage([0; 32]);
+ if (input.witness.len() == 3 && input.witness[2].len() == OFFERED_HTLC_SCRIPT_WEIGHT && input.witness[1].len() == 33)
+ || (input.witness.len() == 3 && input.witness[2].len() == ACCEPTED_HTLC_SCRIPT_WEIGHT && input.witness[1].len() == 33) {
+ log_error!(self, "Remote used revocation sig to take a {} HTLC output at index {} from commitment_tx {}", if input.witness[2].len() == OFFERED_HTLC_SCRIPT_WEIGHT { "offered" } else { "accepted" }, input.previous_output.vout, input.previous_output.txid);
+ } else if input.witness.len() == 5 && input.witness[4].len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
+ payment_preimage.0.copy_from_slice(&tx.input[0].witness[3]);
htlc_updated.push((source, Some(payment_preimage), payment_hash));
- } else if input.witness.len() == 3 && input.witness[2].len() == 133 {
- payment_preimage.copy_from_slice(&tx.input[0].witness[1]);
+ } else if input.witness.len() == 3 && input.witness[2].len() == OFFERED_HTLC_SCRIPT_WEIGHT {
+ payment_preimage.0.copy_from_slice(&tx.input[0].witness[1]);
htlc_updated.push((source, Some(payment_preimage), payment_hash));
} else {
htlc_updated.push((source, None, payment_hash));
index: Readable::read(reader)?,
};
let funding_info = Some((outpoint, Readable::read(reader)?));
+ let current_remote_commitment_txid = match <u8 as Readable<R>>::read(reader)? {
+ 0 => None,
+ 1 => Some(Readable::read(reader)?),
+ _ => return Err(DecodeError::InvalidValue),
+ };
+ let prev_remote_commitment_txid = match <u8 as Readable<R>>::read(reader)? {
+ 0 => None,
+ 1 => Some(Readable::read(reader)?),
+ _ => return Err(DecodeError::InvalidValue),
+ };
Storage::Local {
revocation_base_key,
htlc_base_key,
prev_latest_per_commitment_point,
latest_per_commitment_point,
funding_info,
+ current_remote_commitment_txid,
+ prev_remote_commitment_txid,
}
},
_ => return Err(DecodeError::InvalidValue),
let offered: bool = Readable::read(reader)?;
let amount_msat: u64 = Readable::read(reader)?;
let cltv_expiry: u32 = Readable::read(reader)?;
- let payment_hash: [u8; 32] = Readable::read(reader)?;
+ let payment_hash: PaymentHash = Readable::read(reader)?;
let transaction_output_index: u32 = Readable::read(reader)?;
HTLCOutputInCommitment {
let remote_hash_commitment_number_len: u64 = Readable::read(reader)?;
let mut remote_hash_commitment_number = HashMap::with_capacity(cmp::min(remote_hash_commitment_number_len as usize, MAX_ALLOC_SIZE / 32));
for _ in 0..remote_hash_commitment_number_len {
- let txid: [u8; 32] = Readable::read(reader)?;
+ let payment_hash: PaymentHash = Readable::read(reader)?;
let commitment_number = <U48 as Readable<R>>::read(reader)?.0;
- if let Some(_) = remote_hash_commitment_number.insert(txid, commitment_number) {
+ if let Some(_) = remote_hash_commitment_number.insert(payment_hash, commitment_number) {
return Err(DecodeError::InvalidValue);
}
}
let payment_preimages_len: u64 = Readable::read(reader)?;
let mut payment_preimages = HashMap::with_capacity(cmp::min(payment_preimages_len as usize, MAX_ALLOC_SIZE / 32));
- let mut sha = Sha256::new();
for _ in 0..payment_preimages_len {
- let preimage: [u8; 32] = Readable::read(reader)?;
- sha.reset();
- sha.input(&preimage);
- let mut hash = [0; 32];
- sha.result(&mut hash);
+ let preimage: PaymentPreimage = Readable::read(reader)?;
+ let hash = PaymentHash(Sha256::hash(&preimage.0[..]).into_inner());
if let Some(_) = payment_preimages.insert(hash, preimage) {
return Err(DecodeError::InvalidValue);
}
mod tests {
use bitcoin::blockdata::script::Script;
use bitcoin::blockdata::transaction::Transaction;
- use crypto::digest::Digest;
+ use bitcoin_hashes::Hash;
+ use bitcoin_hashes::sha256::Hash as Sha256;
use hex;
+ use ln::channelmanager::{PaymentPreimage, PaymentHash};
use ln::channelmonitor::ChannelMonitor;
use ln::chan_utils::{HTLCOutputInCommitment, TxCreationKeys};
- use util::sha2::Sha256;
use util::test_utils::TestLogger;
use secp256k1::key::{SecretKey,PublicKey};
use secp256k1::{Secp256k1, Signature};
{
let mut rng = thread_rng();
for _ in 0..20 {
- let mut preimage = [0; 32];
- rng.fill_bytes(&mut preimage);
- let mut sha = Sha256::new();
- sha.input(&preimage);
- let mut hash = [0; 32];
- sha.result(&mut hash);
+ let mut preimage = PaymentPreimage([0; 32]);
+ rng.fill_bytes(&mut preimage.0[..]);
+ let hash = PaymentHash(Sha256::hash(&preimage.0[..]).into_inner());
preimages.push((preimage, hash));
}
}
projects / rust-lightning / blobdiff