X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=src%2Fln%2Fchannel.rs;h=a54be7722384fd2da84ed7de9c801d48e7a527be;hb=11e5975523147ae7024b03f05445c78c9b695752;hp=1a195d504a117ea6590c4605974568443e8f3275;hpb=0f965d319f76bc89a7dd88a2c08c88ed0186f6c2;p=rust-lightning diff --git a/src/ln/channel.rs b/src/ln/channel.rs index 1a195d50..a54be772 100644 --- a/src/ln/channel.rs +++ b/src/ln/channel.rs @@ -23,7 +23,8 @@ use chain::chaininterface::{FeeEstimator,ConfirmationTarget}; use chain::transaction::OutPoint; use util::{transaction_utils,rng}; use util::sha2::Sha256; -use util::logger::{Logger, Record}; +use util::logger::Logger; +use util::errors::APIError; use std; use std::default::Default; @@ -250,7 +251,7 @@ pub struct Channel { channel_id: [u8; 32], channel_state: u32, channel_outbound: bool, - secp_ctx: Secp256k1, + secp_ctx: Secp256k1, announce_publicly: bool, channel_value_satoshis: u64, @@ -301,12 +302,12 @@ pub struct Channel { their_max_accepted_htlcs: u16, //implied by OUR_MAX_HTLCS: our_max_accepted_htlcs: u16, - their_funding_pubkey: PublicKey, - their_revocation_basepoint: PublicKey, - their_payment_basepoint: PublicKey, - their_delayed_payment_basepoint: PublicKey, - their_htlc_basepoint: PublicKey, - their_cur_commitment_point: PublicKey, + their_funding_pubkey: Option, + their_revocation_basepoint: Option, + their_payment_basepoint: Option, + their_delayed_payment_basepoint: Option, + their_htlc_basepoint: Option, + their_cur_commitment_point: Option, their_prev_commitment_point: Option, their_node_id: PublicKey, @@ -319,7 +320,6 @@ pub struct Channel { } const OUR_MAX_HTLCS: u16 = 5; //TODO -const CONF_TARGET: u32 = 12; //TODO: Should be much higher /// Confirmation count threshold at which we close a channel. Ideally we'd keep the channel around /// on ice until the funding transaction gets more confirmations, but the LN protocol doesn't /// really allow for this, so instead we're stuck closing it out at that point. @@ -360,7 +360,8 @@ impl Channel { /// Guaranteed to return a value no larger than channel_value_satoshis fn get_our_channel_reserve_satoshis(channel_value_satoshis: u64) -> u64 { - cmp::min(channel_value_satoshis, 1000) //TODO + let (q, _) = channel_value_satoshis.overflowing_div(100); + cmp::min(channel_value_satoshis, cmp::max(q, 1000)) //TODO } fn derive_our_dust_limit_satoshis(at_open_background_feerate: u64) -> u64 { @@ -371,26 +372,43 @@ impl Channel { 1000 // TODO } - // Constructors: + fn derive_minimum_depth(_channel_value_satoshis_msat: u64, _value_to_self_msat: u64) -> u32 { + const CONF_TARGET: u32 = 12; //TODO: Should be much higher + CONF_TARGET + } - /// panics if channel_value_satoshis is >= `MAX_FUNDING_SATOSHIS` - pub fn new_outbound(fee_estimator: &FeeEstimator, chan_keys: ChannelKeys, their_node_id: PublicKey, channel_value_satoshis: u64, announce_publicly: bool, user_id: u64, logger: Arc) -> Channel { + fn derive_maximum_minimum_depth(_channel_value_satoshis_msat: u64, _value_to_self_msat: u64) -> u32 { + const CONF_TARGET: u32 = 12; //TODO: Should be much higher + CONF_TARGET * 2 + } + + // Constructors: + pub fn new_outbound(fee_estimator: &FeeEstimator, chan_keys: ChannelKeys, their_node_id: PublicKey, channel_value_satoshis: u64, push_msat: u64, announce_publicly: bool, user_id: u64, logger: Arc) -> Result { if channel_value_satoshis >= MAX_FUNDING_SATOSHIS { - panic!("funding value > 2^24"); + return Err(APIError::APIMisuseError{err: "funding value > 2^24"}); } - let feerate = fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Normal); + if push_msat > channel_value_satoshis * 1000 { + return Err(APIError::APIMisuseError{err: "push value > channel value"}); + } + + let background_feerate = fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Background); + if Channel::get_our_channel_reserve_satoshis(channel_value_satoshis) < Channel::derive_our_dust_limit_satoshis(background_feerate) { + return Err(APIError::FeeRateTooHigh{err: format!("Not enough reserve above dust limit can be found at current fee rate({})", background_feerate), feerate: background_feerate}); + } + + let feerate = fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Normal); let secp_ctx = Secp256k1::new(); - let our_channel_monitor_claim_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&secp_ctx, &chan_keys.channel_monitor_claim_key).unwrap().serialize()); + let our_channel_monitor_claim_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&secp_ctx, &chan_keys.channel_monitor_claim_key).serialize()); let our_channel_monitor_claim_script = Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script(); let channel_monitor = ChannelMonitor::new(&chan_keys.revocation_base_key, - &PublicKey::from_secret_key(&secp_ctx, &chan_keys.delayed_payment_base_key).unwrap(), + &PublicKey::from_secret_key(&secp_ctx, &chan_keys.delayed_payment_base_key), &chan_keys.htlc_base_key, BREAKDOWN_TIMEOUT, our_channel_monitor_claim_script); - Channel { + Ok(Channel { user_id: user_id, channel_id: rng::rand_u832(), @@ -403,7 +421,7 @@ impl Channel { local_keys: chan_keys, cur_local_commitment_transaction_number: (1 << 48) - 1, cur_remote_commitment_transaction_number: (1 << 48) - 1, - value_to_self_msat: channel_value_satoshis * 1000, //TODO: give them something on open? Parameterize it? + value_to_self_msat: channel_value_satoshis * 1000 - push_msat, pending_htlcs: Vec::new(), holding_cell_htlc_updates: Vec::new(), next_local_htlc_id: 0, @@ -429,12 +447,12 @@ impl Channel { their_to_self_delay: 0, their_max_accepted_htlcs: 0, - their_funding_pubkey: PublicKey::new(), - their_revocation_basepoint: PublicKey::new(), - their_payment_basepoint: PublicKey::new(), - their_delayed_payment_basepoint: PublicKey::new(), - their_htlc_basepoint: PublicKey::new(), - their_cur_commitment_point: PublicKey::new(), + their_funding_pubkey: None, + their_revocation_basepoint: None, + their_payment_basepoint: None, + their_delayed_payment_basepoint: None, + their_htlc_basepoint: None, + their_cur_commitment_point: None, their_prev_commitment_point: None, their_node_id: their_node_id, @@ -444,7 +462,7 @@ impl Channel { channel_monitor: channel_monitor, logger, - } + }) } fn check_remote_fee(fee_estimator: &FeeEstimator, feerate_per_kw: u32) -> Result<(), HandleError> { @@ -462,31 +480,43 @@ impl Channel { /// Generally prefers to take the DisconnectPeer action on failure, as a notice to the sender /// that we're rejecting the new channel. pub fn new_from_req(fee_estimator: &FeeEstimator, chan_keys: ChannelKeys, their_node_id: PublicKey, msg: &msgs::OpenChannel, user_id: u64, require_announce: bool, allow_announce: bool, logger: Arc) -> Result { + macro_rules! return_error_message { + ( $msg: expr ) => { + return Err(HandleError{err: $msg, action: Some(msgs::ErrorAction::SendErrorMessage{ msg: msgs::ErrorMessage { channel_id: msg.temporary_channel_id, data: $msg.to_string() }})}); + } + } + // Check sanity of message fields: if msg.funding_satoshis >= MAX_FUNDING_SATOSHIS { - return Err(HandleError{err: "funding value > 2^24", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })}); + return_error_message!("funding value > 2^24"); } if msg.channel_reserve_satoshis > msg.funding_satoshis { - return Err(HandleError{err: "Bogus channel_reserve_satoshis", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })}); + return_error_message!("Bogus channel_reserve_satoshis"); } if msg.push_msat > (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000 { - return Err(HandleError{err: "push_msat more than highest possible value", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })}); + return_error_message!("push_msat larger than funding value"); } if msg.dust_limit_satoshis > msg.funding_satoshis { - return Err(HandleError{err: "Peer never wants payout outputs?", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })}); + return_error_message!("Peer never wants payout outputs?"); + } + if msg.dust_limit_satoshis > msg.channel_reserve_satoshis { + return_error_message!("Bogus; channel reserve is less than dust limit"); } if msg.htlc_minimum_msat >= (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000 { - return Err(HandleError{err: "Minimum htlc value is full channel value", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })}); + return_error_message!("Miminum htlc value is full channel value"); } - Channel::check_remote_fee(fee_estimator, msg.feerate_per_kw)?; + Channel::check_remote_fee(fee_estimator, msg.feerate_per_kw).map_err(|e| + HandleError{err: e.err, action: Some(msgs::ErrorAction::SendErrorMessage{ msg: msgs::ErrorMessage { channel_id: msg.temporary_channel_id, data: e.err.to_string() }})} + )?; + if msg.to_self_delay > MAX_LOCAL_BREAKDOWN_TIMEOUT { - return Err(HandleError{err: "They wanted our payments to be delayed by a needlessly long period", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })}); + return_error_message!("They wanted our payments to be delayed by a needlessly long period"); } if msg.max_accepted_htlcs < 1 { - return Err(HandleError{err: "0 max_accpted_htlcs makes for a useless channel", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })}); + return_error_message!("0 max_accpted_htlcs makes for a useless channel"); } - if (msg.channel_flags & 254) != 0 { - return Err(HandleError{err: "unknown channel_flags", action: Some(msgs::ErrorAction::DisconnectPeer{ msg: None })}); + if msg.max_accepted_htlcs > 483 { + return_error_message!("max_accpted_htlcs > 483"); } // Convert things into internal flags and prep our state: @@ -501,11 +531,36 @@ impl Channel { let background_feerate = fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Background); + let our_dust_limit_satoshis = Channel::derive_our_dust_limit_satoshis(background_feerate); + let our_channel_reserve_satoshis = Channel::get_our_channel_reserve_satoshis(msg.funding_satoshis); + if our_channel_reserve_satoshis < our_dust_limit_satoshis { + return_error_message!("Suitalbe channel reserve not found. aborting"); + } + if msg.channel_reserve_satoshis < our_dust_limit_satoshis { + return_error_message!("channel_reserve_satoshis too small"); + } + if our_channel_reserve_satoshis < msg.dust_limit_satoshis { + return_error_message!("Dust limit too high for our channel reserve"); + } + + // check if the funder's amount for the initial commitment tx is sufficient + // for full fee payment + let funders_amount_msat = msg.funding_satoshis * 1000 - msg.push_msat; + if funders_amount_msat < background_feerate * COMMITMENT_TX_BASE_WEIGHT { + return_error_message!("Insufficient funding amount for initial commitment"); + } + + let to_local_msat = msg.push_msat; + let to_remote_msat = funders_amount_msat - background_feerate * COMMITMENT_TX_BASE_WEIGHT; + if to_local_msat <= msg.channel_reserve_satoshis * 1000 && to_remote_msat <= our_channel_reserve_satoshis * 1000 { + return_error_message!("Insufficient funding amount for initial commitment"); + } + let secp_ctx = Secp256k1::new(); - let our_channel_monitor_claim_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&secp_ctx, &chan_keys.channel_monitor_claim_key).unwrap().serialize()); + let our_channel_monitor_claim_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&secp_ctx, &chan_keys.channel_monitor_claim_key).serialize()); let our_channel_monitor_claim_script = Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script(); let mut channel_monitor = ChannelMonitor::new(&chan_keys.revocation_base_key, - &PublicKey::from_secret_key(&secp_ctx, &chan_keys.delayed_payment_base_key).unwrap(), + &PublicKey::from_secret_key(&secp_ctx, &chan_keys.delayed_payment_base_key), &chan_keys.htlc_base_key, BREAKDOWN_TIMEOUT, our_channel_monitor_claim_script); channel_monitor.set_their_htlc_base_key(&msg.htlc_basepoint); @@ -542,7 +597,7 @@ impl Channel { feerate_per_kw: msg.feerate_per_kw as u64, channel_value_satoshis: msg.funding_satoshis, their_dust_limit_satoshis: msg.dust_limit_satoshis, - our_dust_limit_satoshis: Channel::derive_our_dust_limit_satoshis(background_feerate), + our_dust_limit_satoshis: our_dust_limit_satoshis, their_max_htlc_value_in_flight_msat: cmp::min(msg.max_htlc_value_in_flight_msat, msg.funding_satoshis * 1000), their_channel_reserve_satoshis: msg.channel_reserve_satoshis, their_htlc_minimum_msat: msg.htlc_minimum_msat, @@ -550,12 +605,12 @@ impl Channel { their_to_self_delay: msg.to_self_delay, their_max_accepted_htlcs: msg.max_accepted_htlcs, - their_funding_pubkey: msg.funding_pubkey, - their_revocation_basepoint: msg.revocation_basepoint, - their_payment_basepoint: msg.payment_basepoint, - their_delayed_payment_basepoint: msg.delayed_payment_basepoint, - their_htlc_basepoint: msg.htlc_basepoint, - their_cur_commitment_point: msg.first_per_commitment_point, + their_funding_pubkey: Some(msg.funding_pubkey), + their_revocation_basepoint: Some(msg.revocation_basepoint), + their_payment_basepoint: Some(msg.payment_basepoint), + their_delayed_payment_basepoint: Some(msg.delayed_payment_basepoint), + their_htlc_basepoint: Some(msg.htlc_basepoint), + their_cur_commitment_point: Some(msg.first_per_commitment_point), their_prev_commitment_point: None, their_node_id: their_node_id, @@ -584,13 +639,13 @@ impl Channel { fn get_commitment_transaction_number_obscure_factor(&self) -> u64 { let mut sha = Sha256::new(); - let our_payment_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key).unwrap(); + let our_payment_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key); if self.channel_outbound { sha.input(&our_payment_basepoint.serialize()); - sha.input(&self.their_payment_basepoint.serialize()); + sha.input(&self.their_payment_basepoint.unwrap().serialize()); } else { - sha.input(&self.their_payment_basepoint.serialize()); + sha.input(&self.their_payment_basepoint.unwrap().serialize()); sha.input(&our_payment_basepoint.serialize()); } let mut res = [0; 32]; @@ -624,8 +679,7 @@ impl Channel { let txins = { let mut ins: Vec = Vec::new(); ins.push(TxIn { - prev_hash: self.channel_monitor.get_funding_txo().unwrap().txid, - prev_index: self.channel_monitor.get_funding_txo().unwrap().index as u32, + previous_output: self.channel_monitor.get_funding_txo().unwrap().into_bitcoin_outpoint(), script_sig: Script::new(), sequence: ((0x80 as u32) << 8*3) | ((obscured_commitment_transaction_number >> 3*8) as u32), witness: Vec::new(), @@ -750,7 +804,7 @@ impl Channel { #[inline] fn get_closing_scriptpubkey(&self) -> Script { - let our_channel_close_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.channel_close_key).unwrap().serialize()); + let our_channel_close_key_hash = Hash160::from_data(&PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.channel_close_key).serialize()); Builder::new().push_opcode(opcodes::All::OP_PUSHBYTES_0).push_slice(&our_channel_close_key_hash[..]).into_script() } @@ -764,8 +818,7 @@ impl Channel { let txins = { let mut ins: Vec = Vec::new(); ins.push(TxIn { - prev_hash: self.channel_monitor.get_funding_txo().unwrap().txid, - prev_index: self.channel_monitor.get_funding_txo().unwrap().index as u32, + previous_output: self.channel_monitor.get_funding_txo().unwrap().into_bitcoin_outpoint(), script_sig: Script::new(), sequence: 0xffffffff, witness: Vec::new(), @@ -824,11 +877,11 @@ impl Channel { /// The result is a transaction which we can revoke ownership of (ie a "local" transaction) /// TODO Some magic rust shit to compile-time check this? fn build_local_transaction_keys(&self, commitment_number: u64) -> Result { - let per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(commitment_number)).unwrap(); - let delayed_payment_base = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key).unwrap(); - let htlc_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key).unwrap(); + let per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(commitment_number)); + let delayed_payment_base = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key); + let htlc_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key); - Ok(secp_derived_key!(TxCreationKeys::new(&self.secp_ctx, &per_commitment_point, &delayed_payment_base, &htlc_basepoint, &self.their_revocation_basepoint, &self.their_payment_basepoint, &self.their_htlc_basepoint))) + Ok(secp_derived_key!(TxCreationKeys::new(&self.secp_ctx, &per_commitment_point, &delayed_payment_base, &htlc_basepoint, &self.their_revocation_basepoint.unwrap(), &self.their_payment_basepoint.unwrap(), &self.their_htlc_basepoint.unwrap()))) } #[inline] @@ -837,19 +890,19 @@ impl Channel { fn build_remote_transaction_keys(&self) -> Result { //TODO: Ensure that the payment_key derived here ends up in the library users' wallet as we //may see payments to it! - let payment_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key).unwrap(); - let revocation_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key).unwrap(); - let htlc_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key).unwrap(); + let payment_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key); + let revocation_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key); + let htlc_basepoint = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key); - Ok(secp_derived_key!(TxCreationKeys::new(&self.secp_ctx, &self.their_cur_commitment_point, &self.their_delayed_payment_basepoint, &self.their_htlc_basepoint, &revocation_basepoint, &payment_basepoint, &htlc_basepoint))) + Ok(secp_derived_key!(TxCreationKeys::new(&self.secp_ctx, &self.their_cur_commitment_point.unwrap(), &self.their_delayed_payment_basepoint.unwrap(), &self.their_htlc_basepoint.unwrap(), &revocation_basepoint, &payment_basepoint, &htlc_basepoint))) } /// Gets the redeemscript for the funding transaction output (ie the funding transaction output /// pays to get_funding_redeemscript().to_v0_p2wsh()). pub fn get_funding_redeemscript(&self) -> Script { let builder = Builder::new().push_opcode(opcodes::All::OP_PUSHNUM_2); - let our_funding_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap().serialize(); - let their_funding_key = self.their_funding_pubkey.serialize(); + let our_funding_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).serialize(); + let their_funding_key = self.their_funding_pubkey.unwrap().serialize(); if our_funding_key[..] < their_funding_key[..] { builder.push_slice(&our_funding_key) .push_slice(&their_funding_key) @@ -870,12 +923,12 @@ impl Channel { let funding_redeemscript = self.get_funding_redeemscript(); let sighash = Message::from_slice(&bip143::SighashComponents::new(&tx).sighash_all(&tx.input[0], &funding_redeemscript, self.channel_value_satoshis)[..]).unwrap(); - let our_sig = self.secp_ctx.sign(&sighash, &self.local_keys.funding_key).unwrap(); + let our_sig = self.secp_ctx.sign(&sighash, &self.local_keys.funding_key); tx.input[0].witness.push(Vec::new()); // First is the multisig dummy - let our_funding_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap().serialize(); - let their_funding_key = self.their_funding_pubkey.serialize(); + let our_funding_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).serialize(); + let their_funding_key = self.their_funding_pubkey.unwrap().serialize(); if our_funding_key[..] < their_funding_key[..] { tx.input[0].witness.push(our_sig.serialize_der(&self.secp_ctx).to_vec()); tx.input[0].witness.push(their_sig.serialize_der(&self.secp_ctx).to_vec()); @@ -886,7 +939,7 @@ impl Channel { tx.input[0].witness[1].push(SigHashType::All as u8); tx.input[0].witness[2].push(SigHashType::All as u8); - tx.input[0].witness.push(funding_redeemscript.into_vec()); + tx.input[0].witness.push(funding_redeemscript.into_bytes()); our_sig } @@ -907,8 +960,8 @@ impl Channel { let our_htlc_key = secp_derived_key!(chan_utils::derive_private_key(&self.secp_ctx, &keys.per_commitment_point, &self.local_keys.htlc_base_key)); let sighash = Message::from_slice(&bip143::SighashComponents::new(&tx).sighash_all(&tx.input[0], &htlc_redeemscript, htlc.amount_msat / 1000)[..]).unwrap(); - let is_local_tx = PublicKey::from_secret_key(&self.secp_ctx, &our_htlc_key).unwrap() == keys.a_htlc_key; - Ok((htlc_redeemscript, self.secp_ctx.sign(&sighash, &our_htlc_key).unwrap(), is_local_tx)) + let is_local_tx = PublicKey::from_secret_key(&self.secp_ctx, &our_htlc_key) == keys.a_htlc_key; + Ok((htlc_redeemscript, self.secp_ctx.sign(&sighash, &our_htlc_key), is_local_tx)) } /// Signs a transaction created by build_htlc_transaction. If the transaction is an @@ -941,7 +994,7 @@ impl Channel { tx.input[0].witness.push(preimage.unwrap().to_vec()); } - tx.input[0].witness.push(htlc_redeemscript.into_vec()); + tx.input[0].witness.push(htlc_redeemscript.into_bytes()); Ok(our_sig) } @@ -963,7 +1016,8 @@ impl Channel { let mut pending_idx = std::usize::MAX; for (idx, htlc) in self.pending_htlcs.iter().enumerate() { - if !htlc.outbound && htlc.payment_hash == payment_hash_calc { + if !htlc.outbound && htlc.payment_hash == payment_hash_calc && + htlc.state != HTLCState::LocalRemoved && htlc.state != HTLCState::LocalRemovedAwaitingCommitment { if pending_idx != std::usize::MAX { panic!("Duplicate HTLC payment_hash, ChannelManager should have prevented this!"); } @@ -1015,9 +1069,8 @@ impl Channel { // hopefully never happens. Instead, we make sure we get the preimage into the // channel_monitor and pretend we didn't just see the preimage. return Ok((None, Some(self.channel_monitor.clone()))); - } else if htlc.state == HTLCState::LocalRemoved || htlc.state == HTLCState::LocalRemovedAwaitingCommitment { - return Err(HandleError{err: "Unable to find a pending HTLC which matched the given payment preimage", action: None}); } else { + // LocalRemoved/LocalRemovedAwaitingCOmmitment handled in the search loop panic!("Have an inbound HTLC when not awaiting remote revoke that had a garbage state"); } htlc.htlc_id @@ -1115,29 +1168,57 @@ impl Channel { // Message handlers: pub fn accept_channel(&mut self, msg: &msgs::AcceptChannel) -> Result<(), HandleError> { + macro_rules! return_error_message { + ( $msg: expr ) => { + return Err(HandleError{err: $msg, action: Some(msgs::ErrorAction::SendErrorMessage{ msg: msgs::ErrorMessage { channel_id: msg.temporary_channel_id, data: $msg.to_string() }})}); + } + } // Check sanity of message fields: if !self.channel_outbound { - return Err(HandleError{err: "Got an accept_channel message from an inbound peer", action: None}); + return_error_message!("Got an accept_channel message from an inbound peer"); } if self.channel_state != ChannelState::OurInitSent as u32 { - return Err(HandleError{err: "Got an accept_channel message at a strange time", action: None}); + return_error_message!("Got an accept_channel message at a strange time"); } if msg.dust_limit_satoshis > 21000000 * 100000000 { - return Err(HandleError{err: "Peer never wants payout outputs?", action: None}); + return_error_message!("Peer never wants payout outputs?"); } if msg.channel_reserve_satoshis > self.channel_value_satoshis { - return Err(HandleError{err: "Bogus channel_reserve_satoshis", action: None}); + return_error_message!("Bogus channel_reserve_satoshis"); + } + if msg.dust_limit_satoshis > msg.channel_reserve_satoshis { + return_error_message!("Bogus channel_reserve and dust_limit"); + } + if msg.channel_reserve_satoshis < self.our_dust_limit_satoshis { + return_error_message!("Peer never wants payout outputs?"); + } + if msg.dust_limit_satoshis > Channel::get_our_channel_reserve_satoshis(self.channel_value_satoshis) { + return_error_message!("Dust limit is bigger than our channel reverse"); } if msg.htlc_minimum_msat >= (self.channel_value_satoshis - msg.channel_reserve_satoshis) * 1000 { - return Err(HandleError{err: "Minimum htlc value is full channel value", action: None}); + return_error_message!("Minimum htlc value is full channel value"); + } + if msg.minimum_depth > Channel::derive_maximum_minimum_depth(self.channel_value_satoshis*1000, self.value_to_self_msat) { + return_error_message!("minimum_depth too large"); } - //TODO do something with minimum_depth if msg.to_self_delay > MAX_LOCAL_BREAKDOWN_TIMEOUT { - return Err(HandleError{err: "They wanted our payments to be delayed by a needlessly long period", action: None}); + return_error_message!("They wanted our payments to be delayed by a needlessly long period"); } if msg.max_accepted_htlcs < 1 { - return Err(HandleError{err: "0 max_accpted_htlcs makes for a useless channel", action: None}); + return_error_message!("0 max_accpted_htlcs makes for a useless channel"); } + if msg.max_accepted_htlcs > 483 { + return_error_message!("max_accpted_htlcs > 483"); + } + + // TODO: Optional additional constraints mentioned in the spec + // MAY fail the channel if + // funding_satoshi is too small + // htlc_minimum_msat too large + // max_htlc_value_in_flight_msat too small + // channel_reserve_satoshis too large + // max_accepted_htlcs too small + // dust_limit_satoshis too small self.channel_monitor.set_their_htlc_base_key(&msg.htlc_basepoint); @@ -1147,12 +1228,12 @@ impl Channel { self.their_htlc_minimum_msat = msg.htlc_minimum_msat; self.their_to_self_delay = msg.to_self_delay; self.their_max_accepted_htlcs = msg.max_accepted_htlcs; - self.their_funding_pubkey = msg.funding_pubkey; - self.their_revocation_basepoint = msg.revocation_basepoint; - self.their_payment_basepoint = msg.payment_basepoint; - self.their_delayed_payment_basepoint = msg.delayed_payment_basepoint; - self.their_htlc_basepoint = msg.htlc_basepoint; - self.their_cur_commitment_point = msg.first_per_commitment_point; + self.their_funding_pubkey = Some(msg.funding_pubkey); + self.their_revocation_basepoint = Some(msg.revocation_basepoint); + self.their_payment_basepoint = Some(msg.payment_basepoint); + self.their_delayed_payment_basepoint = Some(msg.delayed_payment_basepoint); + self.their_htlc_basepoint = Some(msg.htlc_basepoint); + self.their_cur_commitment_point = Some(msg.first_per_commitment_point); let obscure_factor = self.get_commitment_transaction_number_obscure_factor(); self.channel_monitor.set_commitment_obscure_factor(obscure_factor); @@ -1175,10 +1256,10 @@ impl Channel { let local_sighash = Message::from_slice(&bip143::SighashComponents::new(&local_initial_commitment_tx).sighash_all(&local_initial_commitment_tx.input[0], &funding_script, self.channel_value_satoshis)[..]).unwrap(); // They sign the "local" commitment transaction, allowing us to broadcast the tx if we wish. - secp_call!(self.secp_ctx.verify(&local_sighash, &sig, &self.their_funding_pubkey), "Invalid funding_created signature from peer"); + secp_call!(self.secp_ctx.verify(&local_sighash, &sig, &self.their_funding_pubkey.unwrap()), "Invalid funding_created signature from peer"); // We sign the "remote" commitment transaction, allowing them to broadcast the tx if they wish. - Ok((remote_initial_commitment_tx, self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key).unwrap())) + Ok((remote_initial_commitment_tx, self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key))) } pub fn funding_created(&mut self, msg: &msgs::FundingCreated) -> Result<(msgs::FundingSigned, ChannelMonitor), HandleError> { @@ -1238,7 +1319,7 @@ impl Channel { let local_sighash = Message::from_slice(&bip143::SighashComponents::new(&local_initial_commitment_tx).sighash_all(&local_initial_commitment_tx.input[0], &funding_script, self.channel_value_satoshis)[..]).unwrap(); // They sign the "local" commitment transaction, allowing us to broadcast the tx if we wish. - secp_call!(self.secp_ctx.verify(&local_sighash, &msg.signature, &self.their_funding_pubkey), "Invalid funding_signed signature from peer"); + secp_call!(self.secp_ctx.verify(&local_sighash, &msg.signature, &self.their_funding_pubkey.unwrap()), "Invalid funding_signed signature from peer"); self.sign_commitment_transaction(&mut local_initial_commitment_tx, &msg.signature); self.channel_monitor.provide_latest_local_commitment_tx_info(local_initial_commitment_tx.clone(), local_keys, self.feerate_per_kw, Vec::new()); @@ -1260,8 +1341,8 @@ impl Channel { return Err(HandleError{err: "Peer sent a funding_locked at a strange time", action: None}); } - self.their_prev_commitment_point = Some(self.their_cur_commitment_point); - self.their_cur_commitment_point = msg.next_per_commitment_point; + self.their_prev_commitment_point = self.their_cur_commitment_point; + self.their_cur_commitment_point = Some(msg.next_per_commitment_point); Ok(()) } @@ -1422,7 +1503,7 @@ impl Channel { let mut local_commitment_tx = self.build_commitment_transaction(self.cur_local_commitment_transaction_number, &local_keys, true, false); let local_commitment_txid = local_commitment_tx.0.txid(); let local_sighash = Message::from_slice(&bip143::SighashComponents::new(&local_commitment_tx.0).sighash_all(&local_commitment_tx.0.input[0], &funding_script, self.channel_value_satoshis)[..]).unwrap(); - secp_call!(self.secp_ctx.verify(&local_sighash, &msg.signature, &self.their_funding_pubkey), "Invalid commitment tx signature from peer"); + secp_call!(self.secp_ctx.verify(&local_sighash, &msg.signature, &self.their_funding_pubkey.unwrap()), "Invalid commitment tx signature from peer"); if msg.htlc_signatures.len() != local_commitment_tx.1.len() { return Err(HandleError{err: "Got wrong number of HTLC signatures from remote", action: None}); @@ -1448,7 +1529,7 @@ impl Channel { htlcs_and_sigs.push(((*htlc).clone(), msg.htlc_signatures[idx], htlc_sig)); } - let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(self.cur_local_commitment_transaction_number - 1)).unwrap(); + let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &self.build_local_commitment_secret(self.cur_local_commitment_transaction_number - 1)); let per_commitment_secret = chan_utils::build_commitment_secret(self.local_keys.commitment_seed, self.cur_local_commitment_transaction_number + 1); // Update state now that we've passed all the can-fail calls... @@ -1572,7 +1653,7 @@ impl Channel { return Err(HandleError{err: "Got revoke/ACK message when channel was not in an operational state", action: None}); } if let Some(their_prev_commitment_point) = self.their_prev_commitment_point { - if PublicKey::from_secret_key(&self.secp_ctx, &secp_call!(SecretKey::from_slice(&self.secp_ctx, &msg.per_commitment_secret), "Peer provided an invalid per_commitment_secret")).unwrap() != their_prev_commitment_point { + if PublicKey::from_secret_key(&self.secp_ctx, &secp_call!(SecretKey::from_slice(&self.secp_ctx, &msg.per_commitment_secret), "Peer provided an invalid per_commitment_secret")) != their_prev_commitment_point { return Err(HandleError{err: "Got a revoke commitment secret which didn't correspond to their current pubkey", action: None}); } } @@ -1583,8 +1664,8 @@ impl Channel { // OK, we step the channel here and *then* if the new generation fails we can fail the // channel based on that, but stepping stuff here should be safe either way. self.channel_state &= !(ChannelState::AwaitingRemoteRevoke as u32); - self.their_prev_commitment_point = Some(self.their_cur_commitment_point); - self.their_cur_commitment_point = msg.next_per_commitment_point; + self.their_prev_commitment_point = self.their_cur_commitment_point; + self.their_cur_commitment_point = Some(msg.next_per_commitment_point); self.cur_remote_commitment_transaction_number -= 1; let mut to_forward_infos = Vec::new(); @@ -1699,7 +1780,7 @@ impl Channel { let funding_redeemscript = self.get_funding_redeemscript(); let sighash = Message::from_slice(&bip143::SighashComponents::new(&closing_tx).sighash_all(&closing_tx.input[0], &funding_redeemscript, self.channel_value_satoshis)[..]).unwrap(); - (Some(proposed_feerate), Some(total_fee_satoshis), Some(self.secp_ctx.sign(&sighash, &self.local_keys.funding_key).unwrap())) + (Some(proposed_feerate), Some(total_fee_satoshis), Some(self.secp_ctx.sign(&sighash, &self.local_keys.funding_key))) } else { (None, None, None) }; // From here on out, we may not fail! @@ -1769,14 +1850,14 @@ impl Channel { } let mut sighash = Message::from_slice(&bip143::SighashComponents::new(&closing_tx).sighash_all(&closing_tx.input[0], &funding_redeemscript, self.channel_value_satoshis)[..]).unwrap(); - match self.secp_ctx.verify(&sighash, &msg.signature, &self.their_funding_pubkey) { + match self.secp_ctx.verify(&sighash, &msg.signature, &self.their_funding_pubkey.unwrap()) { Ok(_) => {}, Err(_e) => { // The remote end may have decided to revoke their output due to inconsistent dust // limits, so check for that case by re-checking the signature here. closing_tx = self.build_closing_transaction(msg.fee_satoshis, true).0; sighash = Message::from_slice(&bip143::SighashComponents::new(&closing_tx).sighash_all(&closing_tx.input[0], &funding_redeemscript, self.channel_value_satoshis)[..]).unwrap(); - secp_call!(self.secp_ctx.verify(&sighash, &msg.signature, &self.their_funding_pubkey), "Invalid closing tx signature from peer"); + secp_call!(self.secp_ctx.verify(&sighash, &msg.signature, &self.their_funding_pubkey.unwrap()), "Invalid closing tx signature from peer"); }, }; @@ -1794,7 +1875,7 @@ impl Channel { let closing_tx_max_weight = Self::get_closing_transaction_weight(&self.get_closing_scriptpubkey(), self.their_shutdown_scriptpubkey.as_ref().unwrap()); let (closing_tx, used_total_fee) = self.build_closing_transaction($new_feerate * closing_tx_max_weight / 1000, false); sighash = Message::from_slice(&bip143::SighashComponents::new(&closing_tx).sighash_all(&closing_tx.input[0], &funding_redeemscript, self.channel_value_satoshis)[..]).unwrap(); - let our_sig = self.secp_ctx.sign(&sighash, &self.local_keys.funding_key).unwrap(); + let our_sig = self.secp_ctx.sign(&sighash, &self.local_keys.funding_key); self.last_sent_closing_fee = Some(($new_feerate, used_total_fee)); return Ok((Some(msgs::ClosingSigned { channel_id: self.channel_id, @@ -1955,7 +2036,7 @@ impl Channel { if header.bitcoin_hash() != self.last_block_connected { self.last_block_connected = header.bitcoin_hash(); self.funding_tx_confirmations += 1; - if self.funding_tx_confirmations == CONF_TARGET as u64 { + if self.funding_tx_confirmations == Channel::derive_minimum_depth(self.channel_value_satoshis*1000, self.value_to_self_msat) as u64 { let need_commitment_update = if non_shutdown_state == ChannelState::FundingSent as u32 { self.channel_state |= ChannelState::OurFundingLocked as u32; true @@ -1982,7 +2063,7 @@ impl Channel { //a protocol oversight, but I assume I'm just missing something. if need_commitment_update { 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).unwrap(); + let next_per_commitment_point = PublicKey::from_secret_key(&self.secp_ctx, &next_per_commitment_secret); return Ok(Some(msgs::FundingLocked { channel_id: self.channel_id, next_per_commitment_point: next_per_commitment_point, @@ -2023,7 +2104,7 @@ impl Channel { } } if Some(header.bitcoin_hash()) == self.funding_tx_confirmed_in { - self.funding_tx_confirmations = CONF_TARGET as u64 - 1; + self.funding_tx_confirmations = Channel::derive_minimum_depth(self.channel_value_satoshis*1000, self.value_to_self_msat) as u64 - 1; } false } @@ -2031,12 +2112,12 @@ impl Channel { // 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(&self, chain_hash: Sha256dHash, fee_estimator: &FeeEstimator) -> Result { + pub fn get_open_channel(&self, chain_hash: Sha256dHash, fee_estimator: &FeeEstimator) -> Result { if !self.channel_outbound { panic!("Tried to open a channel for an inbound channel?"); } if self.channel_state != ChannelState::OurInitSent as u32 { - return Err(HandleError{err: "Cannot generate an open_channel after we've moved forward", action: None}); + panic!("Cannot generate an open_channel after we've moved forward"); } if self.cur_local_commitment_transaction_number != (1 << 48) - 1 { @@ -2049,7 +2130,7 @@ impl Channel { chain_hash: chain_hash, temporary_channel_id: self.channel_id, funding_satoshis: self.channel_value_satoshis, - push_msat: 0, //TODO: Something about feerate? + push_msat: self.channel_value_satoshis * 1000 - self.value_to_self_msat, dust_limit_satoshis: self.our_dust_limit_satoshis, max_htlc_value_in_flight_msat: Channel::get_our_max_htlc_value_in_flight_msat(self.channel_value_satoshis), channel_reserve_satoshis: Channel::get_our_channel_reserve_satoshis(self.channel_value_satoshis), @@ -2057,12 +2138,12 @@ impl Channel { feerate_per_kw: fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Background) as u32, to_self_delay: BREAKDOWN_TIMEOUT, max_accepted_htlcs: OUR_MAX_HTLCS, - funding_pubkey: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap(), - revocation_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key).unwrap(), - payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key).unwrap(), - delayed_payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key).unwrap(), - htlc_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key).unwrap(), - first_per_commitment_point: PublicKey::from_secret_key(&self.secp_ctx, &local_commitment_secret).unwrap(), + funding_pubkey: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key), + revocation_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key), + payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key), + delayed_payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key), + htlc_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key), + first_per_commitment_point: PublicKey::from_secret_key(&self.secp_ctx, &local_commitment_secret), channel_flags: if self.announce_publicly {1} else {0}, shutdown_scriptpubkey: None, }) @@ -2087,15 +2168,15 @@ impl Channel { max_htlc_value_in_flight_msat: Channel::get_our_max_htlc_value_in_flight_msat(self.channel_value_satoshis), channel_reserve_satoshis: Channel::get_our_channel_reserve_satoshis(self.channel_value_satoshis), htlc_minimum_msat: self.our_htlc_minimum_msat, - minimum_depth: CONF_TARGET, + minimum_depth: Channel::derive_minimum_depth(self.channel_value_satoshis*1000, self.value_to_self_msat), to_self_delay: BREAKDOWN_TIMEOUT, max_accepted_htlcs: OUR_MAX_HTLCS, - funding_pubkey: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap(), - revocation_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key).unwrap(), - payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key).unwrap(), - delayed_payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key).unwrap(), - htlc_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key).unwrap(), - first_per_commitment_point: PublicKey::from_secret_key(&self.secp_ctx, &local_commitment_secret).unwrap(), + funding_pubkey: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key), + revocation_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.revocation_base_key), + payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.payment_base_key), + delayed_payment_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.delayed_payment_base_key), + htlc_basepoint: PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.htlc_base_key), + first_per_commitment_point: PublicKey::from_secret_key(&self.secp_ctx, &local_commitment_secret), shutdown_scriptpubkey: None, }) } @@ -2108,7 +2189,7 @@ impl Channel { let remote_sighash = Message::from_slice(&bip143::SighashComponents::new(&remote_initial_commitment_tx).sighash_all(&remote_initial_commitment_tx.input[0], &funding_script, self.channel_value_satoshis)[..]).unwrap(); // We sign the "remote" commitment transaction, allowing them to broadcast the tx if they wish. - Ok((self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key).unwrap(), remote_initial_commitment_tx)) + Ok((self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key), remote_initial_commitment_tx)) } /// Updates channel state with knowledge of the funding transaction's txid/index, and generates @@ -2172,7 +2253,7 @@ impl Channel { } let were_node_one = our_node_id.serialize()[..] < self.their_node_id.serialize()[..]; - let our_bitcoin_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key).unwrap(); + let our_bitcoin_key = PublicKey::from_secret_key(&self.secp_ctx, &self.local_keys.funding_key); let msg = msgs::UnsignedChannelAnnouncement { features: msgs::GlobalFeatures::new(), @@ -2180,12 +2261,12 @@ impl Channel { short_channel_id: self.get_short_channel_id().unwrap(), node_id_1: if were_node_one { our_node_id } else { self.get_their_node_id() }, node_id_2: if were_node_one { self.get_their_node_id() } else { our_node_id }, - bitcoin_key_1: if were_node_one { our_bitcoin_key } else { self.their_funding_pubkey }, - bitcoin_key_2: if were_node_one { self.their_funding_pubkey } else { our_bitcoin_key }, + bitcoin_key_1: if were_node_one { our_bitcoin_key } else { self.their_funding_pubkey.unwrap() }, + bitcoin_key_2: if were_node_one { self.their_funding_pubkey.unwrap() } else { our_bitcoin_key }, }; let msghash = Message::from_slice(&Sha256dHash::from_data(&msg.encode()[..])[..]).unwrap(); - let sig = self.secp_ctx.sign(&msghash, &self.local_keys.funding_key).unwrap(); + let sig = self.secp_ctx.sign(&msghash, &self.local_keys.funding_key); Ok((msg, sig)) } @@ -2303,7 +2384,7 @@ impl Channel { let remote_commitment_tx = self.build_commitment_transaction(self.cur_remote_commitment_transaction_number, &remote_keys, false, true); let remote_commitment_txid = remote_commitment_tx.0.txid(); let remote_sighash = Message::from_slice(&bip143::SighashComponents::new(&remote_commitment_tx.0).sighash_all(&remote_commitment_tx.0.input[0], &funding_script, self.channel_value_satoshis)[..]).unwrap(); - let our_sig = self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key).unwrap(); + let our_sig = self.secp_ctx.sign(&remote_sighash, &self.local_keys.funding_key); let mut htlc_sigs = Vec::new(); @@ -2312,7 +2393,7 @@ impl Channel { let htlc_redeemscript = chan_utils::get_htlc_redeemscript(&htlc, &remote_keys); let htlc_sighash = Message::from_slice(&bip143::SighashComponents::new(&htlc_tx).sighash_all(&htlc_tx.input[0], &htlc_redeemscript, htlc.amount_msat / 1000)[..]).unwrap(); let our_htlc_key = secp_derived_key!(chan_utils::derive_private_key(&self.secp_ctx, &remote_keys.per_commitment_point, &self.local_keys.htlc_base_key)); - htlc_sigs.push(self.secp_ctx.sign(&htlc_sighash, &our_htlc_key).unwrap()); + htlc_sigs.push(self.secp_ctx.sign(&htlc_sighash, &our_htlc_key)); } // Update state now that we've passed all the can-fail calls... @@ -2475,38 +2556,39 @@ mod tests { channel_monitor_claim_key: SecretKey::from_slice(&secp_ctx, &hex::decode("0fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff").unwrap()[..]).unwrap(), commitment_seed: [0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff], }; - assert_eq!(PublicKey::from_secret_key(&secp_ctx, &chan_keys.funding_key).unwrap().serialize()[..], + assert_eq!(PublicKey::from_secret_key(&secp_ctx, &chan_keys.funding_key).serialize()[..], hex::decode("023da092f6980e58d2c037173180e9a465476026ee50f96695963e8efe436f54eb").unwrap()[..]); - let mut chan = Channel::new_outbound(&feeest, chan_keys, PublicKey::new(), 10000000, false, 42, Arc::clone(&logger)); // Nothing uses their network key in this test + let their_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &[42; 32]).unwrap()); + let mut chan = Channel::new_outbound(&feeest, chan_keys, their_node_id, 10000000, 100000, false, 42, Arc::clone(&logger)).unwrap(); // Nothing uses their network key in this test chan.their_to_self_delay = 144; chan.our_dust_limit_satoshis = 546; let funding_info = OutPoint::new(Sha256dHash::from_hex("8984484a580b825b9972d7adb15050b3ab624ccd731946b3eeddb92f4e7ef6be").unwrap(), 0); chan.channel_monitor.set_funding_info((funding_info, Script::new())); - chan.their_payment_basepoint = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex::decode("4444444444444444444444444444444444444444444444444444444444444444").unwrap()[..]).unwrap()).unwrap(); - assert_eq!(chan.their_payment_basepoint.serialize()[..], + chan.their_payment_basepoint = Some(PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex::decode("4444444444444444444444444444444444444444444444444444444444444444").unwrap()[..]).unwrap())); + assert_eq!(chan.their_payment_basepoint.unwrap().serialize()[..], hex::decode("032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991").unwrap()[..]); - chan.their_funding_pubkey = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex::decode("1552dfba4f6cf29a62a0af13c8d6981d36d0ef8d61ba10fb0fe90da7634d7e13").unwrap()[..]).unwrap()).unwrap(); - assert_eq!(chan.their_funding_pubkey.serialize()[..], + chan.their_funding_pubkey = Some(PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex::decode("1552dfba4f6cf29a62a0af13c8d6981d36d0ef8d61ba10fb0fe90da7634d7e13").unwrap()[..]).unwrap())); + assert_eq!(chan.their_funding_pubkey.unwrap().serialize()[..], hex::decode("030e9f7b623d2ccc7c9bd44d66d5ce21ce504c0acf6385a132cec6d3c39fa711c1").unwrap()[..]); - chan.their_htlc_basepoint = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex::decode("4444444444444444444444444444444444444444444444444444444444444444").unwrap()[..]).unwrap()).unwrap(); - assert_eq!(chan.their_htlc_basepoint.serialize()[..], + chan.their_htlc_basepoint = Some(PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&secp_ctx, &hex::decode("4444444444444444444444444444444444444444444444444444444444444444").unwrap()[..]).unwrap())); + assert_eq!(chan.their_htlc_basepoint.unwrap().serialize()[..], hex::decode("032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991").unwrap()[..]); - chan.their_revocation_basepoint = PublicKey::from_slice(&secp_ctx, &hex::decode("02466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f27").unwrap()[..]).unwrap(); + chan.their_revocation_basepoint = Some(PublicKey::from_slice(&secp_ctx, &hex::decode("02466d7fcae563e5cb09a0d1870bb580344804617879a14949cf22285f1bae3f27").unwrap()[..]).unwrap()); // We can't just use build_local_transaction_keys here as the per_commitment_secret is not // derived from a commitment_seed, so instead we copy it here and call // build_commitment_transaction. - let delayed_payment_base = PublicKey::from_secret_key(&secp_ctx, &chan.local_keys.delayed_payment_base_key).unwrap(); + let delayed_payment_base = PublicKey::from_secret_key(&secp_ctx, &chan.local_keys.delayed_payment_base_key); let per_commitment_secret = SecretKey::from_slice(&secp_ctx, &hex::decode("1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100").unwrap()[..]).unwrap(); - let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &per_commitment_secret).unwrap(); - let htlc_basepoint = PublicKey::from_secret_key(&secp_ctx, &chan.local_keys.htlc_base_key).unwrap(); - let keys = TxCreationKeys::new(&secp_ctx, &per_commitment_point, &delayed_payment_base, &htlc_basepoint, &chan.their_revocation_basepoint, &chan.their_payment_basepoint, &chan.their_htlc_basepoint).unwrap(); + let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &per_commitment_secret); + let htlc_basepoint = PublicKey::from_secret_key(&secp_ctx, &chan.local_keys.htlc_base_key); + let keys = TxCreationKeys::new(&secp_ctx, &per_commitment_point, &delayed_payment_base, &htlc_basepoint, &chan.their_revocation_basepoint.unwrap(), &chan.their_payment_basepoint.unwrap(), &chan.their_htlc_basepoint.unwrap()).unwrap(); let mut unsigned_tx: (Transaction, Vec); @@ -2515,7 +2597,7 @@ mod tests { unsigned_tx = chan.build_commitment_transaction(0xffffffffffff - 42, &keys, true, false); let their_signature = Signature::from_der(&secp_ctx, &hex::decode($their_sig_hex).unwrap()[..]).unwrap(); let sighash = Message::from_slice(&bip143::SighashComponents::new(&unsigned_tx.0).sighash_all(&unsigned_tx.0.input[0], &chan.get_funding_redeemscript(), chan.channel_value_satoshis)[..]).unwrap(); - secp_ctx.verify(&sighash, &their_signature, &chan.their_funding_pubkey).unwrap(); + secp_ctx.verify(&sighash, &their_signature, &chan.their_funding_pubkey.unwrap()).unwrap(); chan.sign_commitment_transaction(&mut unsigned_tx.0, &their_signature); @@ -3003,10 +3085,10 @@ mod tests { let base_secret = SecretKey::from_slice(&secp_ctx, &hex::decode("000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f").unwrap()[..]).unwrap(); let per_commitment_secret = SecretKey::from_slice(&secp_ctx, &hex::decode("1f1e1d1c1b1a191817161514131211100f0e0d0c0b0a09080706050403020100").unwrap()[..]).unwrap(); - let base_point = PublicKey::from_secret_key(&secp_ctx, &base_secret).unwrap(); + let base_point = PublicKey::from_secret_key(&secp_ctx, &base_secret); assert_eq!(base_point.serialize()[..], hex::decode("036d6caac248af96f6afa7f904f550253a0f3ef3f5aa2fe6838a95b216691468e2").unwrap()[..]); - let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &per_commitment_secret).unwrap(); + let per_commitment_point = PublicKey::from_secret_key(&secp_ctx, &per_commitment_secret); assert_eq!(per_commitment_point.serialize()[..], hex::decode("025f7117a78150fe2ef97db7cfc83bd57b2e2c0d0dd25eaf467a4a1c2a45ce1486").unwrap()[..]); assert_eq!(chan_utils::derive_public_key(&secp_ctx, &per_commitment_point, &base_point).unwrap().serialize()[..],