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;
/// 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>,
}
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,
/// 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
/// 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());
}
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();
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() {
- htlc_updated.push(((*source).clone(), None, *payment_hash));
+ 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() {
- htlc_updated.push(((*source).clone(), None, *payment_hash));
+ htlc_updated.push(((*source).clone(), None, payment_hash.clone()));
}
}
}
}),
};
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(),
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 {
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);
}
}
- 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();
/// 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 {
// 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];
+ let mut payment_preimage = PaymentPreimage([0; 32]);
if input.witness.len() == 5 && input.witness[4].len() == ACCEPTED_HTLC_SCRIPT_WEIGHT {
- payment_preimage.copy_from_slice(&tx.input[0].witness[3]);
+ 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() == OFFERED_HTLC_SCRIPT_WEIGHT {
- payment_preimage.copy_from_slice(&tx.input[0].witness[1]);
+ 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));
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 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)?;
+ let preimage: PaymentPreimage = Readable::read(reader)?;
sha.reset();
- sha.input(&preimage);
- let mut hash = [0; 32];
- sha.result(&mut hash);
+ sha.input(&preimage.0[..]);
+ let mut hash = PaymentHash([0; 32]);
+ sha.result(&mut hash.0[..]);
if let Some(_) = payment_preimages.insert(hash, preimage) {
return Err(DecodeError::InvalidValue);
}
use bitcoin::blockdata::transaction::Transaction;
use crypto::digest::Digest;
use hex;
+ use ln::channelmanager::{PaymentPreimage, PaymentHash};
use ln::channelmonitor::ChannelMonitor;
use ln::chan_utils::{HTLCOutputInCommitment, TxCreationKeys};
use util::sha2::Sha256;
{
let mut rng = thread_rng();
for _ in 0..20 {
- let mut preimage = [0; 32];
- rng.fill_bytes(&mut preimage);
+ let mut preimage = PaymentPreimage([0; 32]);
+ rng.fill_bytes(&mut preimage.0[..]);
let mut sha = Sha256::new();
- sha.input(&preimage);
- let mut hash = [0; 32];
- sha.result(&mut hash);
+ sha.input(&preimage.0[..]);
+ let mut hash = PaymentHash([0; 32]);
+ sha.result(&mut hash.0[..]);
preimages.push((preimage, hash));
}
}
projects / rust-lightning / blobdiff