use bitcoin::util::bip143;
use bitcoin::consensus::encode;
-use bitcoin_hashes::{Hash, HashEngine};
-use bitcoin_hashes::sha256::Hash as Sha256;
-use bitcoin_hashes::hash160::Hash as Hash160;
-use bitcoin_hashes::sha256d::Hash as Sha256dHash;
+use bitcoin::hashes::{Hash, HashEngine};
+use bitcoin::hashes::sha256::Hash as Sha256;
+use bitcoin::hash_types::{Txid, BlockHash, WPubkeyHash};
-use secp256k1::key::{PublicKey,SecretKey};
-use secp256k1::{Secp256k1,Signature};
-use secp256k1;
+use bitcoin::secp256k1::key::{PublicKey,SecretKey};
+use bitcoin::secp256k1::{Secp256k1,Signature};
+use bitcoin::secp256k1;
use ln::features::{ChannelFeatures, InitFeatures};
use ln::msgs;
use ln::msgs::{DecodeError, OptionalField, DataLossProtect};
-use ln::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateStep};
+use ln::channelmonitor::{ChannelMonitor, ChannelMonitorUpdate, ChannelMonitorUpdateStep, HTLC_FAIL_BACK_BUFFER};
use ln::channelmanager::{PendingHTLCStatus, HTLCSource, HTLCFailReason, HTLCFailureMsg, PendingHTLCInfo, RAACommitmentOrder, PaymentPreimage, PaymentHash, BREAKDOWN_TIMEOUT, MAX_LOCAL_BREAKDOWN_TIMEOUT};
use ln::chan_utils::{CounterpartyCommitmentSecrets, LocalCommitmentTransaction, TxCreationKeys, HTLCOutputInCommitment, HTLC_SUCCESS_TX_WEIGHT, HTLC_TIMEOUT_TX_WEIGHT, make_funding_redeemscript, ChannelPublicKeys};
use ln::chan_utils;
/// to drop us, but we store this anyway.
ShutdownComplete = 4096,
}
-const BOTH_SIDES_SHUTDOWN_MASK: u32 = (ChannelState::LocalShutdownSent as u32 | ChannelState::RemoteShutdownSent as u32);
-const MULTI_STATE_FLAGS: u32 = (BOTH_SIDES_SHUTDOWN_MASK | ChannelState::PeerDisconnected as u32 | ChannelState::MonitorUpdateFailed as u32);
+const BOTH_SIDES_SHUTDOWN_MASK: u32 = ChannelState::LocalShutdownSent as u32 | ChannelState::RemoteShutdownSent as u32;
+const MULTI_STATE_FLAGS: u32 = BOTH_SIDES_SHUTDOWN_MASK | ChannelState::PeerDisconnected as u32 | ChannelState::MonitorUpdateFailed as u32;
const INITIAL_COMMITMENT_NUMBER: u64 = (1 << 48) - 1;
/// to detect unconfirmation after a serialize-unserialize roundtrip where we may not see a full
/// series of block_connected/block_disconnected calls. Obviously this is not a guarantee as we
/// could miss the funding_tx_confirmed_in block as well, but it serves as a useful fallback.
- funding_tx_confirmed_in: Option<Sha256dHash>,
+ funding_tx_confirmed_in: Option<BlockHash>,
short_channel_id: Option<u64>,
/// Used to deduplicate block_connected callbacks, also used to verify consistency during
/// ChannelManager deserialization (hence pub(super))
- pub(super) last_block_connected: Sha256dHash,
+ pub(super) last_block_connected: BlockHash,
funding_tx_confirmations: u64,
their_dust_limit_satoshis: u64,
/// Maximmum `funding_satoshis` value, according to the BOLT #2 specification
/// it's 2^24.
-pub const MAX_FUNDING_SATOSHIS: u64 = (1 << 24);
+pub const MAX_FUNDING_SATOSHIS: u64 = 1 << 24;
/// Used to return a simple Error back to ChannelManager. Will get converted to a
/// msgs::ErrorAction::SendErrorMessage or msgs::ErrorAction::IgnoreError as appropriate with our
log_trace!(self, " ...including {} output with value {}", if local { "to_remote" } else { "to_local" }, value_to_b);
txouts.push((TxOut {
script_pubkey: Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0)
- .push_slice(&Hash160::hash(&keys.b_payment_key.serialize())[..])
+ .push_slice(&WPubkeyHash::hash(&keys.b_payment_key.serialize())[..])
.into_script(),
value: value_to_b as u64
}, None));
#[inline]
fn get_closing_scriptpubkey(&self) -> Script {
- let our_channel_close_key_hash = Hash160::hash(&self.shutdown_pubkey.serialize());
+ let our_channel_close_key_hash = WPubkeyHash::hash(&self.shutdown_pubkey.serialize());
Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_close_key_hash[..]).into_script()
}
/// Builds the htlc-success or htlc-timeout transaction which spends a given HTLC output
/// @local is used only to convert relevant internal structures which refer to remote vs local
/// to decide value of outputs and direction of HTLCs.
- fn build_htlc_transaction(&self, prev_hash: &Sha256dHash, htlc: &HTLCOutputInCommitment, local: bool, keys: &TxCreationKeys, feerate_per_kw: u64) -> Transaction {
+ fn build_htlc_transaction(&self, prev_hash: &Txid, htlc: &HTLCOutputInCommitment, local: bool, keys: &TxCreationKeys, feerate_per_kw: u64) -> Transaction {
chan_utils::build_htlc_transaction(prev_hash, feerate_per_kw, if local { self.their_to_self_delay } else { self.our_to_self_delay }, htlc, &keys.a_delayed_payment_key, &keys.revocation_key)
}
// They sign the "local" commitment transaction...
secp_check!(self.secp_ctx.verify(&local_sighash, &sig, self.their_funding_pubkey()), "Invalid funding_created signature from peer");
- let localtx = LocalCommitmentTransaction::new_missing_local_sig(local_initial_commitment_tx, sig, &PublicKey::from_secret_key(&self.secp_ctx, self.local_keys.funding_key()), self.their_funding_pubkey(), local_keys, self.feerate_per_kw, Vec::new());
+ let localtx = LocalCommitmentTransaction::new_missing_local_sig(local_initial_commitment_tx, sig.clone(), &PublicKey::from_secret_key(&self.secp_ctx, self.local_keys.funding_key()), self.their_funding_pubkey(), local_keys, self.feerate_per_kw, Vec::new());
let remote_keys = self.build_remote_transaction_keys()?;
let remote_initial_commitment_tx = self.build_commitment_transaction(self.cur_remote_commitment_transaction_number, &remote_keys, false, false, self.feerate_per_kw).0;
&their_pubkeys.htlc_basepoint, &their_pubkeys.delayed_payment_basepoint,
self.their_to_self_delay, funding_redeemscript.clone(), self.channel_value_satoshis,
self.get_commitment_transaction_number_obscure_factor(),
+ local_initial_commitment_tx.clone(),
self.logger.clone());
channel_monitor.provide_latest_remote_commitment_tx_info(&remote_initial_commitment_tx, Vec::new(), self.cur_remote_commitment_transaction_number, self.their_cur_commitment_point.unwrap());
- channel_monitor.provide_latest_local_commitment_tx_info(local_initial_commitment_tx.clone(), Vec::new()).unwrap();
channel_monitor
} }
}
let funding_txo_script = funding_redeemscript.to_v0_p2wsh();
macro_rules! create_monitor {
() => { {
+ let local_commitment_tx = LocalCommitmentTransaction::new_missing_local_sig(local_initial_commitment_tx.clone(), msg.signature.clone(), &PublicKey::from_secret_key(&self.secp_ctx, self.local_keys.funding_key()), their_funding_pubkey, local_keys.clone(), self.feerate_per_kw, Vec::new());
let mut channel_monitor = ChannelMonitor::new(self.local_keys.clone(),
&self.shutdown_pubkey, self.our_to_self_delay,
&self.destination_script, (funding_txo.clone(), funding_txo_script.clone()),
&their_pubkeys.htlc_basepoint, &their_pubkeys.delayed_payment_basepoint,
self.their_to_self_delay, funding_redeemscript.clone(), self.channel_value_satoshis,
self.get_commitment_transaction_number_obscure_factor(),
+ local_commitment_tx,
self.logger.clone());
channel_monitor.provide_latest_remote_commitment_tx_info(&remote_initial_commitment_tx, Vec::new(), self.cur_remote_commitment_transaction_number, self.their_cur_commitment_point.unwrap());
- channel_monitor.provide_latest_local_commitment_tx_info(LocalCommitmentTransaction::new_missing_local_sig(local_initial_commitment_tx.clone(), &msg.signature, &PublicKey::from_secret_key(&self.secp_ctx, self.local_keys.funding_key()), their_funding_pubkey, local_keys.clone(), self.feerate_per_kw, Vec::new()), Vec::new()).unwrap();
channel_monitor
} }
return Err(ChannelError::Close("Remote provided CLTV expiry in seconds instead of block height"));
}
- //TODO: Check msg.cltv_expiry further? Do this in channel manager?
-
if self.channel_state & ChannelState::LocalShutdownSent as u32 != 0 {
if let PendingHTLCStatus::Forward(_) = pending_forward_state {
panic!("ChannelManager shouldn't be trying to add a forwardable HTLC after we've started closing");
let mut monitor_update = ChannelMonitorUpdate {
update_id: self.latest_monitor_update_id,
updates: vec![ChannelMonitorUpdateStep::LatestLocalCommitmentTXInfo {
- commitment_tx: LocalCommitmentTransaction::new_missing_local_sig(local_commitment_tx.0, &msg.signature, &PublicKey::from_secret_key(&self.secp_ctx, self.local_keys.funding_key()), &their_funding_pubkey, local_keys, self.feerate_per_kw, htlcs_without_source),
+ commitment_tx: LocalCommitmentTransaction::new_missing_local_sig(local_commitment_tx.0, msg.signature.clone(), &PublicKey::from_secret_key(&self.secp_ctx, self.local_keys.funding_key()), &their_funding_pubkey, local_keys, self.feerate_per_kw, htlcs_without_source),
htlc_outputs: htlcs_and_sigs
}]
};
self.network_sync == UpdateStatus::DisabledMarked
}
- /// Called by channelmanager based on chain blocks being connected.
- /// Note that we only need to use this to detect funding_signed, anything else is handled by
- /// the channel_monitor.
- /// In case of Err, the channel may have been closed, at which point the standard requirements
- /// apply - no calls may be made except those explicitly stated to be allowed post-shutdown.
+ /// When we receive a new block, we (a) check whether the block contains the funding
+ /// transaction (which would start us counting blocks until we send the funding_signed), and
+ /// (b) check the height of the block against outbound holding cell HTLCs in case we need to
+ /// give up on them prematurely and time them out. Everything else (e.g. commitment
+ /// transaction broadcasts, channel closure detection, HTLC transaction broadcasting, etc) is
+ /// handled by the ChannelMonitor.
+ ///
+ /// If we return Err, the channel may have been closed, at which point the standard
+ /// requirements apply - no calls may be made except those explicitly stated to be allowed
+ /// post-shutdown.
/// Only returns an ErrorAction of DisconnectPeer, if Err.
- pub fn block_connected(&mut self, header: &BlockHeader, height: u32, txn_matched: &[&Transaction], indexes_of_txn_matched: &[u32]) -> Result<Option<msgs::FundingLocked>, msgs::ErrorMessage> {
+ ///
+ /// May return some HTLCs (and their payment_hash) which have timed out and should be failed
+ /// back.
+ pub fn block_connected(&mut self, header: &BlockHeader, height: u32, txn_matched: &[&Transaction], indexes_of_txn_matched: &[u32]) -> Result<(Option<msgs::FundingLocked>, Vec<(HTLCSource, PaymentHash)>), msgs::ErrorMessage> {
+ let mut timed_out_htlcs = Vec::new();
+ self.holding_cell_htlc_updates.retain(|htlc_update| {
+ match htlc_update {
+ &HTLCUpdateAwaitingACK::AddHTLC { ref payment_hash, ref source, ref cltv_expiry, .. } => {
+ if *cltv_expiry <= height + HTLC_FAIL_BACK_BUFFER {
+ timed_out_htlcs.push((source.clone(), payment_hash.clone()));
+ false
+ } else { true }
+ },
+ _ => true
+ }
+ });
let non_shutdown_state = self.channel_state & (!MULTI_STATE_FLAGS);
if header.bitcoin_hash() != self.last_block_connected {
if self.funding_tx_confirmations > 0 {
if self.channel_state & (ChannelState::MonitorUpdateFailed as u32) == 0 {
let next_per_commitment_secret = self.build_local_commitment_secret(self.cur_local_commitment_transaction_number);
let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &next_per_commitment_secret);
- return Ok(Some(msgs::FundingLocked {
+ return Ok((Some(msgs::FundingLocked {
channel_id: self.channel_id,
next_per_commitment_point: next_per_commitment_point,
- }));
+ }), timed_out_htlcs));
} else {
self.monitor_pending_funding_locked = true;
- return Ok(None);
+ return Ok((None, timed_out_htlcs));
}
}
}
}
}
- Ok(None)
+ Ok((None, timed_out_htlcs))
}
/// Called by channelmanager based on chain blocks being disconnected.
// Methods to get unprompted messages to send to the remote end (or where we already returned
// something in the handler for the message that prompted this message):
- pub fn get_open_channel<F: Deref>(&self, chain_hash: Sha256dHash, fee_estimator: &F) -> msgs::OpenChannel
+ pub fn get_open_channel<F: Deref>(&self, chain_hash: BlockHash, fee_estimator: &F) -> msgs::OpenChannel
where F::Target: FeeEstimator
{
if !self.channel_outbound {
/// closing).
/// Note that the "channel must be funded" requirement is stricter than BOLT 7 requires - see
/// https://github.com/lightningnetwork/lightning-rfc/issues/468
- pub fn get_channel_announcement(&self, our_node_id: PublicKey, chain_hash: Sha256dHash) -> Result<(msgs::UnsignedChannelAnnouncement, Signature), ChannelError> {
+ pub fn get_channel_announcement(&self, our_node_id: PublicKey, chain_hash: BlockHash) -> Result<(msgs::UnsignedChannelAnnouncement, Signature), ChannelError> {
if !self.config.announced_channel {
return Err(ChannelError::Ignore("Channel is not available for public announcements"));
}
return Err(ChannelError::Ignore("Cannot send value that would put us over their reserve value"));
}
- //TODO: Check cltv_expiry? Do this in channel manager?
-
// Now update local state:
if (self.channel_state & (ChannelState::AwaitingRemoteRevoke as u32)) == (ChannelState::AwaitingRemoteRevoke as u32) {
self.holding_cell_htlc_updates.push(HTLCUpdateAwaitingACK::AddHTLC {
use bitcoin::blockdata::constants::genesis_block;
use bitcoin::blockdata::opcodes;
use bitcoin::network::constants::Network;
- use bitcoin_hashes::hex::FromHex;
+ use bitcoin::hashes::hex::FromHex;
use hex;
use ln::channelmanager::{HTLCSource, PaymentPreimage, PaymentHash};
use ln::channel::{Channel,ChannelKeys,InboundHTLCOutput,OutboundHTLCOutput,InboundHTLCState,OutboundHTLCState,HTLCOutputInCommitment,TxCreationKeys};
use util::enforcing_trait_impls::EnforcingChannelKeys;
use util::test_utils;
use util::logger::Logger;
- use secp256k1::{Secp256k1, Message, Signature, All};
- use secp256k1::key::{SecretKey,PublicKey};
- use bitcoin_hashes::sha256::Hash as Sha256;
- use bitcoin_hashes::sha256d::Hash as Sha256dHash;
- use bitcoin_hashes::hash160::Hash as Hash160;
- use bitcoin_hashes::Hash;
+ use bitcoin::secp256k1::{Secp256k1, Message, Signature, All};
+ use bitcoin::secp256k1::key::{SecretKey,PublicKey};
+ use bitcoin::hashes::sha256::Hash as Sha256;
+ use bitcoin::hashes::Hash;
+ use bitcoin::hash_types::{Txid, WPubkeyHash};
use std::sync::Arc;
use rand::{thread_rng,Rng};
fn get_destination_script(&self) -> Script {
let secp_ctx = Secp256k1::signing_only();
let channel_monitor_claim_key = SecretKey::from_slice(&hex::decode("0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()[..]).unwrap();
- let our_channel_monitor_claim_key_hash = Hash160::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
+ let our_channel_monitor_claim_key_hash = WPubkeyHash::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script()
}
chan.their_to_self_delay = 144;
chan.our_dust_limit_satoshis = 546;
- let funding_info = OutPoint::new(Sha256dHash::from_hex("8984484a580b825b9972d7adb15050b3ab624ccd731946b3eeddb92f4e7ef6be").unwrap(), 0);
+ let funding_info = OutPoint::new(Txid::from_hex("8984484a580b825b9972d7adb15050b3ab624ccd731946b3eeddb92f4e7ef6be").unwrap(), 0);
chan.funding_txo = Some(funding_info);
let their_pubkeys = ChannelPublicKeys {
macro_rules! test_commitment {
( $their_sig_hex: expr, $our_sig_hex: expr, $tx_hex: expr, {
$( { $htlc_idx: expr, $their_htlc_sig_hex: expr, $our_htlc_sig_hex: expr, $htlc_tx_hex: expr } ), *
- } ) => {
+ } ) => { {
unsigned_tx = {
let mut res = chan.build_commitment_transaction(0xffffffffffff - 42, &keys, true, false, chan.feerate_per_kw);
let htlcs = res.2.drain(..)
})*
assert_eq!(unsigned_tx.1.len(), per_htlc.len());
- localtx = LocalCommitmentTransaction::new_missing_local_sig(unsigned_tx.0.clone(), &their_signature, &PublicKey::from_secret_key(&secp_ctx, chan.local_keys.funding_key()), chan.their_funding_pubkey(), keys.clone(), chan.feerate_per_kw, per_htlc);
- chan_keys.sign_local_commitment(&mut localtx, &chan.secp_ctx);
+ localtx = LocalCommitmentTransaction::new_missing_local_sig(unsigned_tx.0.clone(), their_signature.clone(), &PublicKey::from_secret_key(&secp_ctx, chan.local_keys.funding_key()), chan.their_funding_pubkey(), keys.clone(), chan.feerate_per_kw, per_htlc);
+ let local_sig = chan_keys.sign_local_commitment(&localtx, &chan.secp_ctx).unwrap();
- assert_eq!(serialize(localtx.with_valid_witness())[..],
+ assert_eq!(serialize(&localtx.add_local_sig(&redeemscript, local_sig))[..],
hex::decode($tx_hex).unwrap()[..]);
+ let htlc_sigs = chan_keys.sign_local_commitment_htlc_transactions(&localtx, chan.their_to_self_delay, &chan.secp_ctx).unwrap();
+ let mut htlc_sig_iter = localtx.per_htlc.iter().zip(htlc_sigs.iter().enumerate());
+
$({
let remote_signature = Signature::from_der(&hex::decode($their_htlc_sig_hex).unwrap()[..]).unwrap();
assert!(preimage.is_some());
}
- chan_keys.sign_htlc_transaction(&mut localtx, $htlc_idx, preimage, chan.their_to_self_delay, &chan.secp_ctx);
+ let mut htlc_sig = htlc_sig_iter.next().unwrap();
+ while (htlc_sig.1).1.is_none() { htlc_sig = htlc_sig_iter.next().unwrap(); }
+ assert_eq!((htlc_sig.0).0.transaction_output_index, Some($htlc_idx));
- assert_eq!(serialize(localtx.htlc_with_valid_witness($htlc_idx).as_ref().unwrap())[..],
+ assert_eq!(serialize(&localtx.get_signed_htlc_tx((htlc_sig.1).0, &(htlc_sig.1).1.unwrap(), &preimage, chan.their_to_self_delay))[..],
hex::decode($htlc_tx_hex).unwrap()[..]);
})*
- }
+ loop {
+ let htlc_sig = htlc_sig_iter.next();
+ if htlc_sig.is_none() { break; }
+ assert!((htlc_sig.unwrap().1).1.is_none());
+ }
+ } }
}
{
projects / rust-lightning / blobdiff