X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fchain%2Fonchaintx.rs;h=2871abbc22312d5f9e4f31aa5b9ec4fd49ddbf9d;hb=c70ea1d987baef7b0d658d476eb09c281f98bd65;hp=b26d4d8724f89bba1470ad8b400c70902f0e8f32;hpb=03ec74631fcaf3cf8434432259d61571865820b0;p=rust-lightning diff --git a/lightning/src/chain/onchaintx.rs b/lightning/src/chain/onchaintx.rs index b26d4d87..2871abbc 100644 --- a/lightning/src/chain/onchaintx.rs +++ b/lightning/src/chain/onchaintx.rs @@ -12,10 +12,10 @@ //! OnchainTxHandler objects are fully-part of ChannelMonitor and encapsulates all //! building, tracking, bumping and notifications functions. -use bitcoin::PackedLockTime; +use bitcoin::blockdata::locktime::absolute::LockTime; use bitcoin::blockdata::transaction::Transaction; use bitcoin::blockdata::transaction::OutPoint as BitcoinOutPoint; -use bitcoin::blockdata::script::Script; +use bitcoin::blockdata::script::{Script, ScriptBuf}; use bitcoin::hashes::{Hash, HashEngine}; use bitcoin::hashes::sha256::Hash as Sha256; use bitcoin::hash_types::{Txid, BlockHash}; @@ -23,15 +23,13 @@ use bitcoin::secp256k1::{Secp256k1, ecdsa::Signature}; use bitcoin::secp256k1; use crate::chain::chaininterface::compute_feerate_sat_per_1000_weight; -use crate::events::bump_transaction::{ChannelDerivationParameters, HTLCDescriptor}; -use crate::sign::{ChannelSigner, EntropySource, SignerProvider}; +use crate::sign::{ChannelDerivationParameters, HTLCDescriptor, ChannelSigner, EntropySource, SignerProvider, ecdsa::WriteableEcdsaChannelSigner}; use crate::ln::msgs::DecodeError; use crate::ln::PaymentPreimage; use crate::ln::chan_utils::{self, ChannelTransactionParameters, HTLCOutputInCommitment, HolderCommitmentTransaction}; use crate::chain::ClaimId; use crate::chain::chaininterface::{ConfirmationTarget, FeeEstimator, BroadcasterInterface, LowerBoundedFeeEstimator}; use crate::chain::channelmonitor::{ANTI_REORG_DELAY, CLTV_SHARED_CLAIM_BUFFER}; -use crate::sign::WriteableEcdsaChannelSigner; use crate::chain::package::{PackageSolvingData, PackageTemplate}; use crate::util::logger::Logger; use crate::util::ser::{Readable, ReadableArgs, MaybeReadable, UpgradableRequired, Writer, Writeable, VecWriter}; @@ -198,7 +196,7 @@ pub(crate) enum ClaimEvent { BumpHTLC { target_feerate_sat_per_1000_weight: u32, htlcs: Vec, - tx_lock_time: PackedLockTime, + tx_lock_time: LockTime, }, } @@ -218,14 +216,9 @@ pub(crate) enum OnchainClaim { pub struct OnchainTxHandler { channel_value_satoshis: u64, channel_keys_id: [u8; 32], - destination_script: Script, + destination_script: ScriptBuf, holder_commitment: HolderCommitmentTransaction, - // holder_htlc_sigs and prev_holder_htlc_sigs are in the order as they appear in the commitment - // transaction outputs (hence the Option<>s inside the Vec). The first usize is the index in - // the set of HTLCs in the HolderCommitmentTransaction. - holder_htlc_sigs: Option>>, prev_holder_commitment: Option, - prev_holder_htlc_sigs: Option>>, pub(super) signer: ChannelSigner, pub(crate) channel_transaction_parameters: ChannelTransactionParameters, @@ -283,9 +276,7 @@ impl PartialEq for OnchainTxHandler< self.channel_keys_id == other.channel_keys_id && self.destination_script == other.destination_script && self.holder_commitment == other.holder_commitment && - self.holder_htlc_sigs == other.holder_htlc_sigs && self.prev_holder_commitment == other.prev_holder_commitment && - self.prev_holder_htlc_sigs == other.prev_holder_htlc_sigs && self.channel_transaction_parameters == other.channel_transaction_parameters && self.pending_claim_requests == other.pending_claim_requests && self.claimable_outpoints == other.claimable_outpoints && @@ -303,9 +294,9 @@ impl OnchainTxHandler self.destination_script.write(writer)?; self.holder_commitment.write(writer)?; - self.holder_htlc_sigs.write(writer)?; + None::>>>.write(writer)?; // holder_htlc_sigs self.prev_holder_commitment.write(writer)?; - self.prev_holder_htlc_sigs.write(writer)?; + None::>>>.write(writer)?; // prev_holder_htlc_sigs self.channel_transaction_parameters.write(writer)?; @@ -348,7 +339,7 @@ impl OnchainTxHandler } } -impl<'a, 'b, ES: EntropySource, SP: SignerProvider> ReadableArgs<(&'a ES, &'b SP, u64, [u8; 32])> for OnchainTxHandler { +impl<'a, 'b, ES: EntropySource, SP: SignerProvider> ReadableArgs<(&'a ES, &'b SP, u64, [u8; 32])> for OnchainTxHandler { fn read(reader: &mut R, args: (&'a ES, &'b SP, u64, [u8; 32])) -> Result { let entropy_source = args.0; let signer_provider = args.1; @@ -360,9 +351,9 @@ impl<'a, 'b, ES: EntropySource, SP: SignerProvider> ReadableArgs<(&'a ES, &'b SP let destination_script = Readable::read(reader)?; let holder_commitment = Readable::read(reader)?; - let holder_htlc_sigs = Readable::read(reader)?; + let _holder_htlc_sigs: Option>> = Readable::read(reader)?; let prev_holder_commitment = Readable::read(reader)?; - let prev_holder_htlc_sigs = Readable::read(reader)?; + let _prev_holder_htlc_sigs: Option>> = Readable::read(reader)?; let channel_parameters = Readable::read(reader)?; @@ -427,9 +418,7 @@ impl<'a, 'b, ES: EntropySource, SP: SignerProvider> ReadableArgs<(&'a ES, &'b SP channel_keys_id, destination_script, holder_commitment, - holder_htlc_sigs, prev_holder_commitment, - prev_holder_htlc_sigs, signer, channel_transaction_parameters: channel_parameters, claimable_outpoints, @@ -444,7 +433,7 @@ impl<'a, 'b, ES: EntropySource, SP: SignerProvider> ReadableArgs<(&'a ES, &'b SP impl OnchainTxHandler { pub(crate) fn new( - channel_value_satoshis: u64, channel_keys_id: [u8; 32], destination_script: Script, + channel_value_satoshis: u64, channel_keys_id: [u8; 32], destination_script: ScriptBuf, signer: ChannelSigner, channel_parameters: ChannelTransactionParameters, holder_commitment: HolderCommitmentTransaction, secp_ctx: Secp256k1 ) -> Self { @@ -453,9 +442,7 @@ impl OnchainTxHandler channel_keys_id, destination_script, holder_commitment, - holder_htlc_sigs: None, prev_holder_commitment: None, - prev_holder_htlc_sigs: None, signer, channel_transaction_parameters: channel_parameters, pending_claim_requests: HashMap::new(), @@ -593,7 +580,7 @@ impl OnchainTxHandler if cached_request.is_malleable() { if cached_request.requires_external_funding() { let target_feerate_sat_per_1000_weight = cached_request.compute_package_feerate( - fee_estimator, ConfirmationTarget::HighPriority, force_feerate_bump + fee_estimator, ConfirmationTarget::OnChainSweep, force_feerate_bump ); if let Some(htlcs) = cached_request.construct_malleable_package_with_external_funding(self) { return Some(( @@ -602,7 +589,7 @@ impl OnchainTxHandler OnchainClaim::Event(ClaimEvent::BumpHTLC { target_feerate_sat_per_1000_weight, htlcs, - tx_lock_time: PackedLockTime(cached_request.package_locktime(cur_height)), + tx_lock_time: LockTime::from_consensus(cached_request.package_locktime(cur_height)), }), )); } else { @@ -621,7 +608,7 @@ impl OnchainTxHandler cur_height, self, output_value, self.destination_script.clone(), logger ).unwrap(); log_trace!(logger, "...with timer {} and feerate {}", new_timer, new_feerate); - assert!(predicted_weight >= transaction.weight()); + assert!(predicted_weight >= transaction.weight().to_wu()); return Some((new_timer, new_feerate, OnchainClaim::Tx(transaction))); } } else { @@ -644,13 +631,13 @@ impl OnchainTxHandler debug_assert_eq!(tx.txid(), self.holder_commitment.trust().txid(), "Holder commitment transaction mismatch"); - let conf_target = ConfirmationTarget::HighPriority; + let conf_target = ConfirmationTarget::OnChainSweep; let package_target_feerate_sat_per_1000_weight = cached_request .compute_package_feerate(fee_estimator, conf_target, force_feerate_bump); if let Some(input_amount_sat) = output.funding_amount { let fee_sat = input_amount_sat - tx.output.iter().map(|output| output.value).sum::(); let commitment_tx_feerate_sat_per_1000_weight = - compute_feerate_sat_per_1000_weight(fee_sat, tx.weight() as u64); + compute_feerate_sat_per_1000_weight(fee_sat, tx.weight().to_wu()); if commitment_tx_feerate_sat_per_1000_weight >= package_target_feerate_sat_per_1000_weight { log_debug!(logger, "Pre-signed {} already has feerate {} sat/kW above required {} sat/kW", log_tx!(tx), commitment_tx_feerate_sat_per_1000_weight, @@ -776,7 +763,7 @@ impl OnchainTxHandler OnchainClaim::Tx(tx) => { log_info!(logger, "Broadcasting onchain {}", log_tx!(tx)); broadcaster.broadcast_transactions(&[&tx]); - ClaimId(tx.txid().into_inner()) + ClaimId(tx.txid().to_byte_array()) }, OnchainClaim::Event(claim_event) => { log_info!(logger, "Yielding onchain event to spend inputs {:?}", req.outpoints()); @@ -784,7 +771,7 @@ impl OnchainTxHandler ClaimEvent::BumpCommitment { ref commitment_tx, .. } => // For commitment claims, we can just use their txid as it should // already be unique. - ClaimId(commitment_tx.txid().into_inner()), + ClaimId(commitment_tx.txid().to_byte_array()), ClaimEvent::BumpHTLC { ref htlcs, .. } => { // For HTLC claims, commit to the entire set of HTLC outputs to // claim, which will always be unique per request. Once a claim ID @@ -792,10 +779,10 @@ impl OnchainTxHandler // underlying set of HTLCs changes. let mut engine = Sha256::engine(); for htlc in htlcs { - engine.input(&htlc.commitment_txid.into_inner()); + engine.input(&htlc.commitment_txid.to_byte_array()); engine.input(&htlc.htlc.transaction_output_index.unwrap().to_be_bytes()); } - ClaimId(Sha256::from_engine(engine).into_inner()) + ClaimId(Sha256::from_engine(engine).to_byte_array()) }, }; debug_assert!(self.pending_claim_requests.get(&claim_id).is_none()); @@ -1089,51 +1076,18 @@ impl OnchainTxHandler self.claimable_outpoints.get(outpoint).is_some() } - pub(crate) fn get_relevant_txids(&self) -> Vec<(Txid, Option)> { - let mut txids: Vec<(Txid, Option)> = self.onchain_events_awaiting_threshold_conf + pub(crate) fn get_relevant_txids(&self) -> Vec<(Txid, u32, Option)> { + let mut txids: Vec<(Txid, u32, Option)> = self.onchain_events_awaiting_threshold_conf .iter() - .map(|entry| (entry.txid, entry.block_hash)) + .map(|entry| (entry.txid, entry.height, entry.block_hash)) .collect(); - txids.sort_unstable_by_key(|(txid, _)| *txid); - txids.dedup(); + txids.sort_unstable_by(|a, b| a.0.cmp(&b.0).then(b.1.cmp(&a.1))); + txids.dedup_by_key(|(txid, _, _)| *txid); txids } pub(crate) fn provide_latest_holder_tx(&mut self, tx: HolderCommitmentTransaction) { self.prev_holder_commitment = Some(replace(&mut self.holder_commitment, tx)); - self.holder_htlc_sigs = None; - } - - // Normally holder HTLCs are signed at the same time as the holder commitment tx. However, - // in some configurations, the holder commitment tx has been signed and broadcast by a - // ChannelMonitor replica, so we handle that case here. - fn sign_latest_holder_htlcs(&mut self) { - if self.holder_htlc_sigs.is_none() { - let (_sig, sigs) = self.signer.sign_holder_commitment_and_htlcs(&self.holder_commitment, &self.secp_ctx).expect("sign holder commitment"); - self.holder_htlc_sigs = Some(Self::extract_holder_sigs(&self.holder_commitment, sigs)); - } - } - - // Normally only the latest commitment tx and HTLCs need to be signed. However, in some - // configurations we may have updated our holder commitment but a replica of the ChannelMonitor - // broadcast the previous one before we sync with it. We handle that case here. - fn sign_prev_holder_htlcs(&mut self) { - if self.prev_holder_htlc_sigs.is_none() { - if let Some(ref holder_commitment) = self.prev_holder_commitment { - let (_sig, sigs) = self.signer.sign_holder_commitment_and_htlcs(holder_commitment, &self.secp_ctx).expect("sign previous holder commitment"); - self.prev_holder_htlc_sigs = Some(Self::extract_holder_sigs(holder_commitment, sigs)); - } - } - } - - fn extract_holder_sigs(holder_commitment: &HolderCommitmentTransaction, sigs: Vec) -> Vec> { - let mut ret = Vec::new(); - for (htlc_idx, (holder_sig, htlc)) in sigs.iter().zip(holder_commitment.htlcs().iter()).enumerate() { - let tx_idx = htlc.transaction_output_index.unwrap(); - if ret.len() <= tx_idx as usize { ret.resize(tx_idx as usize + 1, None); } - ret[tx_idx as usize] = Some((htlc_idx, holder_sig.clone())); - } - ret } pub(crate) fn get_unsigned_holder_commitment_tx(&self) -> &Transaction { @@ -1145,15 +1099,13 @@ impl OnchainTxHandler // before providing a initial commitment transaction. For outbound channel, init ChannelMonitor at Channel::funding_signed, there is nothing // to monitor before. pub(crate) fn get_fully_signed_holder_tx(&mut self, funding_redeemscript: &Script) -> Transaction { - let (sig, htlc_sigs) = self.signer.sign_holder_commitment_and_htlcs(&self.holder_commitment, &self.secp_ctx).expect("signing holder commitment"); - self.holder_htlc_sigs = Some(Self::extract_holder_sigs(&self.holder_commitment, htlc_sigs)); + let sig = self.signer.sign_holder_commitment(&self.holder_commitment, &self.secp_ctx).expect("signing holder commitment"); self.holder_commitment.add_holder_sig(funding_redeemscript, sig) } #[cfg(any(test, feature="unsafe_revoked_tx_signing"))] pub(crate) fn get_fully_signed_copy_holder_tx(&mut self, funding_redeemscript: &Script) -> Transaction { - let (sig, htlc_sigs) = self.signer.unsafe_sign_holder_commitment_and_htlcs(&self.holder_commitment, &self.secp_ctx).expect("sign holder commitment"); - self.holder_htlc_sigs = Some(Self::extract_holder_sigs(&self.holder_commitment, htlc_sigs)); + let sig = self.signer.unsafe_sign_holder_commitment(&self.holder_commitment, &self.secp_ctx).expect("sign holder commitment"); self.holder_commitment.add_holder_sig(funding_redeemscript, sig) } @@ -1230,18 +1182,4 @@ impl OnchainTxHandler pub(crate) fn channel_type_features(&self) -> &ChannelTypeFeatures { &self.channel_transaction_parameters.channel_type_features } - - #[cfg(any(test,feature = "unsafe_revoked_tx_signing"))] - pub(crate) fn unsafe_get_fully_signed_htlc_tx(&mut self, outp: &::bitcoin::OutPoint, preimage: &Option) -> Option { - let latest_had_sigs = self.holder_htlc_sigs.is_some(); - let prev_had_sigs = self.prev_holder_htlc_sigs.is_some(); - let ret = self.get_fully_signed_htlc_tx(outp, preimage); - if !latest_had_sigs { - self.holder_htlc_sigs = None; - } - if !prev_had_sigs { - self.prev_holder_htlc_sigs = None; - } - ret - } }