use util::logger::Logger;
use util::errors::APIError;
use util::config::{UserConfig,ChannelConfig};
+use util::scid_utils::scid_from_parts;
use std;
-use std::default::Default;
use std::{cmp,mem,fmt};
use std::ops::Deref;
#[cfg(any(test, feature = "fuzztarget"))]
use std::sync::Mutex;
use bitcoin::hashes::hex::ToHex;
+use bitcoin::blockdata::opcodes::all::OP_PUSHBYTES_0;
#[cfg(test)]
pub struct ChannelValueStat {
/// is used to derive commitment keys, which are used to construct the
/// signatures in a commitment_signed message.
/// Implies AwaitingRemoteRevoke.
+ ///
/// [BOLT #2]: https://github.com/lightningnetwork/lightning-rfc/blob/master/02-peer-protocol.md
AwaitingRemoteRevokeToAnnounce(PendingHTLCStatus),
/// Included in a received commitment_signed message (implying we've revoke_and_ack'd it).
}
}
+/// Information needed for constructing an invoice route hint for this channel.
+#[derive(Clone)]
+pub struct CounterpartyForwardingInfo {
+ /// Base routing fee in millisatoshis.
+ pub fee_base_msat: u32,
+ /// Amount in millionths of a satoshi the channel will charge per transferred satoshi.
+ pub fee_proportional_millionths: u32,
+ /// The minimum difference in cltv_expiry between an ingoing HTLC and its outgoing counterpart,
+ /// such that the outgoing HTLC is forwardable to this counterparty. See `msgs::ChannelUpdate`'s
+ /// `cltv_expiry_delta` for more details.
+ pub cltv_expiry_delta: u16,
+}
+
// TODO: We should refactor this to be an Inbound/OutboundChannel until initial setup handshaking
// has been completed, and then turn into a Channel to get compiler-time enforcement of things like
// calling channel_id() before we're set up or things like get_outbound_funding_signed on an
/// could miss the funding_tx_confirmed_in block as well, but it serves as a useful fallback.
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: BlockHash,
funding_tx_confirmations: u64,
counterparty_dust_limit_satoshis: u64,
//implied by OUR_MAX_HTLCS: max_accepted_htlcs: u16,
minimum_depth: u32,
+ counterparty_forwarding_info: Option<CounterpartyForwardingInfo>,
+
pub(crate) channel_transaction_parameters: ChannelTransactionParameters,
counterparty_cur_commitment_point: Option<PublicKey>,
let feerate = fee_estimator.get_est_sat_per_1000_weight(ConfirmationTarget::Normal);
+ let mut secp_ctx = Secp256k1::new();
+ secp_ctx.seeded_randomize(&keys_provider.get_secure_random_bytes());
+
Ok(Channel {
user_id,
config: config.channel_options.clone(),
channel_id: keys_provider.get_secure_random_bytes(),
channel_state: ChannelState::OurInitSent as u32,
- secp_ctx: Secp256k1::new(),
+ secp_ctx,
channel_value_satoshis,
latest_monitor_update_id: 0,
funding_tx_confirmed_in: None,
short_channel_id: None,
- last_block_connected: Default::default(),
funding_tx_confirmations: 0,
feerate_per_kw: feerate,
counterparty_max_accepted_htlcs: 0,
minimum_depth: 0, // Filled in in accept_channel
+ counterparty_forwarding_info: None,
+
channel_transaction_parameters: ChannelTransactionParameters {
holder_pubkeys: pubkeys,
holder_selected_contest_delay: config.own_channel_config.our_to_self_delay,
let counterparty_shutdown_scriptpubkey = if their_features.supports_upfront_shutdown_script() {
match &msg.shutdown_scriptpubkey {
&OptionalField::Present(ref script) => {
- // Peer is signaling upfront_shutdown and has provided a non-accepted scriptpubkey format. We enforce it while receiving shutdown msg
- if script.is_p2pkh() || script.is_p2sh() || script.is_v0_p2wsh() || script.is_v0_p2wpkh() {
- Some(script.clone())
// Peer is signaling upfront_shutdown and has opt-out with a 0-length script. We don't enforce anything
- } else if script.len() == 0 {
+ if script.len() == 0 {
None
// Peer is signaling upfront_shutdown and has provided a non-accepted scriptpubkey format. Fail the channel
- } else {
+ } else if is_unsupported_shutdown_script(&their_features, script) {
return Err(ChannelError::Close(format!("Peer is signaling upfront_shutdown but has provided a non-accepted scriptpubkey format. script: ({})", script.to_bytes().to_hex())));
+ } else {
+ Some(script.clone())
}
},
// Peer is signaling upfront shutdown but don't opt-out with correct mechanism (a.k.a 0-length script). Peer looks buggy, we fail the channel
}
} else { None };
+ let mut secp_ctx = Secp256k1::new();
+ secp_ctx.seeded_randomize(&keys_provider.get_secure_random_bytes());
+
let chan = Channel {
user_id,
config: local_config,
channel_id: msg.temporary_channel_id,
channel_state: (ChannelState::OurInitSent as u32) | (ChannelState::TheirInitSent as u32),
- secp_ctx: Secp256k1::new(),
+ secp_ctx,
latest_monitor_update_id: 0,
funding_tx_confirmed_in: None,
short_channel_id: None,
- last_block_connected: Default::default(),
funding_tx_confirmations: 0,
feerate_per_kw: msg.feerate_per_kw,
counterparty_max_accepted_htlcs: msg.max_accepted_htlcs,
minimum_depth: config.own_channel_config.minimum_depth,
+ counterparty_forwarding_info: None,
+
channel_transaction_parameters: ChannelTransactionParameters {
holder_pubkeys: pubkeys,
holder_selected_contest_delay: config.own_channel_config.our_to_self_delay,
let counterparty_shutdown_scriptpubkey = if their_features.supports_upfront_shutdown_script() {
match &msg.shutdown_scriptpubkey {
&OptionalField::Present(ref script) => {
- // Peer is signaling upfront_shutdown and has provided a non-accepted scriptpubkey format. We enforce it while receiving shutdown msg
- if script.is_p2pkh() || script.is_p2sh() || script.is_v0_p2wsh() || script.is_v0_p2wpkh() {
- Some(script.clone())
// Peer is signaling upfront_shutdown and has opt-out with a 0-length script. We don't enforce anything
- } else if script.len() == 0 {
+ if script.len() == 0 {
None
// Peer is signaling upfront_shutdown and has provided a non-accepted scriptpubkey format. Fail the channel
+ } else if is_unsupported_shutdown_script(&their_features, script) {
+ return Err(ChannelError::Close(format!("Peer is signaling upfront_shutdown but has provided a non-accepted scriptpubkey format. script: ({})", script.to_bytes().to_hex())));
} else {
- return Err(ChannelError::Close(format!("Peer is signaling upfront_shutdown but has provided a non-accepted scriptpubkey format. scriptpubkey: ({})", script.to_bytes().to_hex())));
+ Some(script.clone())
}
},
// Peer is signaling upfront shutdown but don't opt-out with correct mechanism (a.k.a 0-length script). Peer looks buggy, we fail the channel
&self.get_counterparty_pubkeys().funding_pubkey
}
- pub fn funding_created<L: Deref>(&mut self, msg: &msgs::FundingCreated, logger: &L) -> Result<(msgs::FundingSigned, ChannelMonitor<Signer>), ChannelError> where L::Target: Logger {
+ pub fn funding_created<L: Deref>(&mut self, msg: &msgs::FundingCreated, last_block_hash: BlockHash, logger: &L) -> Result<(msgs::FundingSigned, ChannelMonitor<Signer>), ChannelError> where L::Target: Logger {
if self.is_outbound() {
return Err(ChannelError::Close("Received funding_created for an outbound channel?".to_owned()));
}
let funding_redeemscript = self.get_funding_redeemscript();
let funding_txo_script = funding_redeemscript.to_v0_p2wsh();
let obscure_factor = get_commitment_transaction_number_obscure_factor(&self.get_holder_pubkeys().payment_point, &self.get_counterparty_pubkeys().payment_point, self.is_outbound());
- let mut channel_monitor = ChannelMonitor::new(self.holder_signer.clone(),
- &self.shutdown_pubkey, self.get_holder_selected_contest_delay(),
- &self.destination_script, (funding_txo, funding_txo_script.clone()),
- &self.channel_transaction_parameters,
- funding_redeemscript.clone(), self.channel_value_satoshis,
- obscure_factor,
- holder_commitment_tx);
+ let channel_monitor = ChannelMonitor::new(self.secp_ctx.clone(), self.holder_signer.clone(),
+ &self.shutdown_pubkey, self.get_holder_selected_contest_delay(),
+ &self.destination_script, (funding_txo, funding_txo_script.clone()),
+ &self.channel_transaction_parameters,
+ funding_redeemscript.clone(), self.channel_value_satoshis,
+ obscure_factor,
+ holder_commitment_tx, last_block_hash);
channel_monitor.provide_latest_counterparty_commitment_tx(counterparty_initial_commitment_txid, Vec::new(), self.cur_counterparty_commitment_transaction_number, self.counterparty_cur_commitment_point.unwrap(), logger);
/// Handles a funding_signed message from the remote end.
/// If this call is successful, broadcast the funding transaction (and not before!)
- pub fn funding_signed<L: Deref>(&mut self, msg: &msgs::FundingSigned, logger: &L) -> Result<ChannelMonitor<Signer>, ChannelError> where L::Target: Logger {
+ pub fn funding_signed<L: Deref>(&mut self, msg: &msgs::FundingSigned, last_block_hash: BlockHash, logger: &L) -> Result<ChannelMonitor<Signer>, ChannelError> where L::Target: Logger {
if !self.is_outbound() {
return Err(ChannelError::Close("Received funding_signed for an inbound channel?".to_owned()));
}
let funding_txo = self.get_funding_txo().unwrap();
let funding_txo_script = funding_redeemscript.to_v0_p2wsh();
let obscure_factor = get_commitment_transaction_number_obscure_factor(&self.get_holder_pubkeys().payment_point, &self.get_counterparty_pubkeys().payment_point, self.is_outbound());
- let mut channel_monitor = ChannelMonitor::new(self.holder_signer.clone(),
- &self.shutdown_pubkey, self.get_holder_selected_contest_delay(),
- &self.destination_script, (funding_txo, funding_txo_script),
- &self.channel_transaction_parameters,
- funding_redeemscript.clone(), self.channel_value_satoshis,
- obscure_factor,
- holder_commitment_tx);
+ let channel_monitor = ChannelMonitor::new(self.secp_ctx.clone(), self.holder_signer.clone(),
+ &self.shutdown_pubkey, self.get_holder_selected_contest_delay(),
+ &self.destination_script, (funding_txo, funding_txo_script),
+ &self.channel_transaction_parameters,
+ funding_redeemscript.clone(), self.channel_value_satoshis,
+ obscure_factor,
+ holder_commitment_tx, last_block_hash);
channel_monitor.provide_latest_counterparty_commitment_tx(counterparty_initial_bitcoin_tx.txid, Vec::new(), self.cur_counterparty_commitment_transaction_number, self.counterparty_cur_commitment_point.unwrap(), logger);
})
}
- pub fn shutdown<F: Deref>(&mut self, fee_estimator: &F, msg: &msgs::Shutdown) -> Result<(Option<msgs::Shutdown>, Option<msgs::ClosingSigned>, Vec<(HTLCSource, PaymentHash)>), ChannelError>
+ pub fn shutdown<F: Deref>(&mut self, fee_estimator: &F, their_features: &InitFeatures, msg: &msgs::Shutdown) -> Result<(Option<msgs::Shutdown>, Option<msgs::ClosingSigned>, Vec<(HTLCSource, PaymentHash)>), ChannelError>
where F::Target: FeeEstimator
{
if self.channel_state & (ChannelState::PeerDisconnected as u32) == ChannelState::PeerDisconnected as u32 {
}
assert_eq!(self.channel_state & ChannelState::ShutdownComplete as u32, 0);
- // BOLT 2 says we must only send a scriptpubkey of certain standard forms, which are up to
- // 34 bytes in length, so don't let the remote peer feed us some super fee-heavy script.
- if self.is_outbound() && msg.scriptpubkey.len() > 34 {
- return Err(ChannelError::Close(format!("Got counterparty shutdown_scriptpubkey ({}) of absurd length from remote peer", msg.scriptpubkey.to_bytes().to_hex())));
- }
-
- //Check counterparty_shutdown_scriptpubkey form as BOLT says we must
- if !msg.scriptpubkey.is_p2pkh() && !msg.scriptpubkey.is_p2sh() && !msg.scriptpubkey.is_v0_p2wpkh() && !msg.scriptpubkey.is_v0_p2wsh() {
+ if is_unsupported_shutdown_script(&their_features, &msg.scriptpubkey) {
return Err(ChannelError::Close(format!("Got a nonstandard scriptpubkey ({}) from remote peer", msg.scriptpubkey.to_bytes().to_hex())));
}
// Upper bound by capacity. We make it a bit less than full capacity to prevent attempts
// to use full capacity. This is an effort to reduce routing failures, because in many cases
// channel might have been used to route very small values (either by honest users or as DoS).
- self.channel_value_satoshis * 9 / 10,
+ self.channel_value_satoshis * 1000 * 9 / 10,
Channel::<Signer>::get_holder_max_htlc_value_in_flight_msat(self.channel_value_satoshis)
);
_ => true
}
});
- let non_shutdown_state = self.channel_state & (!MULTI_STATE_FLAGS);
- if header.block_hash() != self.last_block_connected {
- if self.funding_tx_confirmations > 0 {
- self.funding_tx_confirmations += 1;
- }
+
+ if self.funding_tx_confirmations > 0 {
+ self.funding_tx_confirmations += 1;
}
+
+ let non_shutdown_state = self.channel_state & (!MULTI_STATE_FLAGS);
if non_shutdown_state & !(ChannelState::TheirFundingLocked as u32) == ChannelState::FundingSent as u32 {
for &(index_in_block, tx) in txdata.iter() {
let funding_txo = self.get_funding_txo().unwrap();
}
}
}
- if height > 0xff_ff_ff || (index_in_block) > 0xff_ff_ff {
- panic!("Block was bogus - either height 16 million or had > 16 million transactions");
- }
- assert!(txo_idx <= 0xffff); // txo_idx is a (u16 as usize), so this is just listed here for completeness
self.funding_tx_confirmations = 1;
- self.short_channel_id = Some(((height as u64) << (5*8)) |
- ((index_in_block as u64) << (2*8)) |
- ((txo_idx as u64) << (0*8)));
+ self.short_channel_id = match scid_from_parts(height as u64, index_in_block as u64, txo_idx as u64) {
+ Ok(scid) => Some(scid),
+ Err(_) => panic!("Block was bogus - either height was > 16 million, had > 16 million transactions, or had > 65k outputs"),
+ }
}
}
}
}
- if header.block_hash() != self.last_block_connected {
- self.last_block_connected = header.block_hash();
- self.update_time_counter = cmp::max(self.update_time_counter, header.time);
- if self.funding_tx_confirmations > 0 {
- if self.funding_tx_confirmations == self.minimum_depth as u64 {
- let need_commitment_update = if non_shutdown_state == ChannelState::FundingSent as u32 {
- self.channel_state |= ChannelState::OurFundingLocked as u32;
- true
- } else if non_shutdown_state == (ChannelState::FundingSent as u32 | ChannelState::TheirFundingLocked as u32) {
- self.channel_state = ChannelState::ChannelFunded as u32 | (self.channel_state & MULTI_STATE_FLAGS);
- self.update_time_counter += 1;
- true
- } else if non_shutdown_state == (ChannelState::FundingSent as u32 | ChannelState::OurFundingLocked as u32) {
- // We got a reorg but not enough to trigger a force close, just update
- // funding_tx_confirmed_in and return.
- false
- } else if self.channel_state < ChannelState::ChannelFunded as u32 {
- panic!("Started confirming a channel in a state pre-FundingSent?: {}", self.channel_state);
+
+ self.update_time_counter = cmp::max(self.update_time_counter, header.time);
+ if self.funding_tx_confirmations > 0 {
+ if self.funding_tx_confirmations == self.minimum_depth as u64 {
+ let need_commitment_update = if non_shutdown_state == ChannelState::FundingSent as u32 {
+ self.channel_state |= ChannelState::OurFundingLocked as u32;
+ true
+ } else if non_shutdown_state == (ChannelState::FundingSent as u32 | ChannelState::TheirFundingLocked as u32) {
+ self.channel_state = ChannelState::ChannelFunded as u32 | (self.channel_state & MULTI_STATE_FLAGS);
+ self.update_time_counter += 1;
+ true
+ } else if non_shutdown_state == (ChannelState::FundingSent as u32 | ChannelState::OurFundingLocked as u32) {
+ // We got a reorg but not enough to trigger a force close, just update
+ // funding_tx_confirmed_in and return.
+ false
+ } else if self.channel_state < ChannelState::ChannelFunded as u32 {
+ panic!("Started confirming a channel in a state pre-FundingSent?: {}", self.channel_state);
+ } else {
+ // We got a reorg but not enough to trigger a force close, just update
+ // funding_tx_confirmed_in and return.
+ false
+ };
+ self.funding_tx_confirmed_in = Some(header.block_hash());
+
+ //TODO: Note that this must be a duplicate of the previous commitment point they sent us,
+ //as otherwise we will have a commitment transaction that they can't revoke (well, kinda,
+ //they can by sending two revoke_and_acks back-to-back, but not really). This appears to be
+ //a protocol oversight, but I assume I'm just missing something.
+ if need_commitment_update {
+ if self.channel_state & (ChannelState::MonitorUpdateFailed as u32) == 0 {
+ let next_per_commitment_point = self.holder_signer.get_per_commitment_point(self.cur_holder_commitment_transaction_number, &self.secp_ctx);
+ return Ok((Some(msgs::FundingLocked {
+ channel_id: self.channel_id,
+ next_per_commitment_point,
+ }), timed_out_htlcs));
} else {
- // We got a reorg but not enough to trigger a force close, just update
- // funding_tx_confirmed_in and return.
- false
- };
- self.funding_tx_confirmed_in = Some(self.last_block_connected);
-
- //TODO: Note that this must be a duplicate of the previous commitment point they sent us,
- //as otherwise we will have a commitment transaction that they can't revoke (well, kinda,
- //they can by sending two revoke_and_acks back-to-back, but not really). This appears to be
- //a protocol oversight, but I assume I'm just missing something.
- if need_commitment_update {
- if self.channel_state & (ChannelState::MonitorUpdateFailed as u32) == 0 {
- let next_per_commitment_point = self.holder_signer.get_per_commitment_point(self.cur_holder_commitment_transaction_number, &self.secp_ctx);
- return Ok((Some(msgs::FundingLocked {
- channel_id: self.channel_id,
- next_per_commitment_point,
- }), timed_out_htlcs));
- } else {
- self.monitor_pending_funding_locked = true;
- return Ok((None, timed_out_htlcs));
- }
+ self.monitor_pending_funding_locked = true;
+ return Ok((None, timed_out_htlcs));
}
}
}
return true;
}
}
- self.last_block_connected = header.block_hash();
- if Some(self.last_block_connected) == self.funding_tx_confirmed_in {
+ if Some(header.block_hash()) == self.funding_tx_confirmed_in {
self.funding_tx_confirmations = self.minimum_depth as u64 - 1;
}
false
signature = res.0;
htlc_signatures = res.1;
- log_trace!(logger, "Signed remote commitment tx {} with redeemscript {} -> {}",
+ log_trace!(logger, "Signed remote commitment tx {} (txid {}) with redeemscript {} -> {}",
+ encode::serialize_hex(&counterparty_commitment_tx.0.trust().built_transaction().transaction),
&counterparty_commitment_txid,
encode::serialize_hex(&self.get_funding_redeemscript()),
log_bytes!(signature.serialize_compact()[..]));
}
}
+ /// Get forwarding information for the counterparty.
+ pub fn counterparty_forwarding_info(&self) -> Option<CounterpartyForwardingInfo> {
+ self.counterparty_forwarding_info.clone()
+ }
+
+ pub fn channel_update(&mut self, msg: &msgs::ChannelUpdate) -> Result<(), ChannelError> {
+ let usable_channel_value_msat = (self.channel_value_satoshis - self.counterparty_selected_channel_reserve_satoshis) * 1000;
+ if msg.contents.htlc_minimum_msat >= usable_channel_value_msat {
+ return Err(ChannelError::Close("Minimum htlc value is greater than channel value".to_string()));
+ }
+ self.counterparty_forwarding_info = Some(CounterpartyForwardingInfo {
+ fee_base_msat: msg.contents.fee_base_msat,
+ fee_proportional_millionths: msg.contents.fee_proportional_millionths,
+ cltv_expiry_delta: msg.contents.cltv_expiry_delta
+ });
+
+ Ok(())
+ }
+
/// Begins the shutdown process, getting a message for the remote peer and returning all
/// holding cell HTLCs for payment failure.
pub fn get_shutdown(&mut self) -> Result<(msgs::Shutdown, Vec<(HTLCSource, PaymentHash)>), APIError> {
/// those explicitly stated to be allowed after shutdown completes, eg some simple getters).
/// Also returns the list of payment_hashes for channels which we can safely fail backwards
/// immediately (others we will have to allow to time out).
- pub fn force_shutdown(&mut self, should_broadcast: bool) -> (Option<OutPoint>, ChannelMonitorUpdate, Vec<(HTLCSource, PaymentHash)>) {
+ pub fn force_shutdown(&mut self, should_broadcast: bool) -> (Option<(OutPoint, ChannelMonitorUpdate)>, Vec<(HTLCSource, PaymentHash)>) {
+ // Note that we MUST only generate a monitor update that indicates force-closure - we're
+ // called during initialization prior to the chain_monitor in the encompassing ChannelManager
+ // being fully configured in some cases. Thus, its likely any monitor events we generate will
+ // be delayed in being processed! See the docs for `ChannelManagerReadArgs` for more.
assert!(self.channel_state != ChannelState::ShutdownComplete as u32);
// We go ahead and "free" any holding cell HTLCs or HTLCs we haven't yet committed to and
_ => {}
}
}
- let funding_txo = if let Some(funding_txo) = self.get_funding_txo() {
+ let monitor_update = if let Some(funding_txo) = self.get_funding_txo() {
// If we haven't yet exchanged funding signatures (ie channel_state < FundingSent),
// returning a channel monitor update here would imply a channel monitor update before
// we even registered the channel monitor to begin with, which is invalid.
// monitor update to the user, even if we return one).
// See test_duplicate_chan_id and test_pre_lockin_no_chan_closed_update for more.
if self.channel_state & (ChannelState::FundingSent as u32 | ChannelState::ChannelFunded as u32 | ChannelState::ShutdownComplete as u32) != 0 {
- Some(funding_txo.clone())
+ self.latest_monitor_update_id += 1;
+ Some((funding_txo, ChannelMonitorUpdate {
+ update_id: self.latest_monitor_update_id,
+ updates: vec![ChannelMonitorUpdateStep::ChannelForceClosed { should_broadcast }],
+ }))
} else { None }
} else { None };
self.channel_state = ChannelState::ShutdownComplete as u32;
self.update_time_counter += 1;
- self.latest_monitor_update_id += 1;
- (funding_txo, ChannelMonitorUpdate {
- update_id: self.latest_monitor_update_id,
- updates: vec![ChannelMonitorUpdateStep::ChannelForceClosed { should_broadcast }],
- }, dropped_outbound_htlcs)
+ (monitor_update, dropped_outbound_htlcs)
}
}
+fn is_unsupported_shutdown_script(their_features: &InitFeatures, script: &Script) -> bool {
+ // We restrain shutdown scripts to standards forms to avoid transactions not propagating on the p2p tx-relay network
+
+ // BOLT 2 says we must only send a scriptpubkey of certain standard forms,
+ // which for a a BIP-141-compliant witness program is at max 42 bytes in length.
+ // So don't let the remote peer feed us some super fee-heavy script.
+ let is_script_too_long = script.len() > 42;
+ if is_script_too_long {
+ return true;
+ }
+
+ if their_features.supports_shutdown_anysegwit() && script.is_witness_program() && script.as_bytes()[0] != OP_PUSHBYTES_0.into_u8() {
+ return false;
+ }
+
+ return !script.is_p2pkh() && !script.is_p2sh() && !script.is_v0_p2wpkh() && !script.is_v0_p2wsh()
+}
+
const SERIALIZATION_VERSION: u8 = 1;
const MIN_SERIALIZATION_VERSION: u8 = 1;
self.funding_tx_confirmed_in.write(writer)?;
self.short_channel_id.write(writer)?;
-
- self.last_block_connected.write(writer)?;
self.funding_tx_confirmations.write(writer)?;
self.counterparty_dust_limit_satoshis.write(writer)?;
self.counterparty_max_accepted_htlcs.write(writer)?;
self.minimum_depth.write(writer)?;
+ match &self.counterparty_forwarding_info {
+ Some(info) => {
+ 1u8.write(writer)?;
+ info.fee_base_msat.write(writer)?;
+ info.fee_proportional_millionths.write(writer)?;
+ info.cltv_expiry_delta.write(writer)?;
+ },
+ None => 0u8.write(writer)?
+ }
+
self.channel_transaction_parameters.write(writer)?;
self.counterparty_cur_commitment_point.write(writer)?;
let funding_tx_confirmed_in = Readable::read(reader)?;
let short_channel_id = Readable::read(reader)?;
-
- let last_block_connected = Readable::read(reader)?;
let funding_tx_confirmations = Readable::read(reader)?;
let counterparty_dust_limit_satoshis = Readable::read(reader)?;
let counterparty_max_accepted_htlcs = Readable::read(reader)?;
let minimum_depth = Readable::read(reader)?;
+ let counterparty_forwarding_info = match <u8 as Readable>::read(reader)? {
+ 0 => None,
+ 1 => Some(CounterpartyForwardingInfo {
+ fee_base_msat: Readable::read(reader)?,
+ fee_proportional_millionths: Readable::read(reader)?,
+ cltv_expiry_delta: Readable::read(reader)?,
+ }),
+ _ => return Err(DecodeError::InvalidValue),
+ };
+
let channel_parameters = Readable::read(reader)?;
let counterparty_cur_commitment_point = Readable::read(reader)?;
let counterparty_shutdown_scriptpubkey = Readable::read(reader)?;
let commitment_secrets = Readable::read(reader)?;
+ let mut secp_ctx = Secp256k1::new();
+ secp_ctx.seeded_randomize(&keys_source.get_secure_random_bytes());
+
Ok(Channel {
user_id,
config,
channel_id,
channel_state,
- secp_ctx: Secp256k1::new(),
+ secp_ctx,
channel_value_satoshis,
latest_monitor_update_id,
funding_tx_confirmed_in,
short_channel_id,
- last_block_connected,
funding_tx_confirmations,
counterparty_dust_limit_satoshis,
counterparty_max_accepted_htlcs,
minimum_depth,
+ counterparty_forwarding_info,
+
channel_transaction_parameters: channel_parameters,
counterparty_cur_commitment_point,
use ln::channel::{Channel,Sign,InboundHTLCOutput,OutboundHTLCOutput,InboundHTLCState,OutboundHTLCState,HTLCOutputInCommitment,HTLCCandidate,HTLCInitiator,TxCreationKeys};
use ln::channel::MAX_FUNDING_SATOSHIS;
use ln::features::InitFeatures;
- use ln::msgs::{OptionalField, DataLossProtect, DecodeError};
+ use ln::msgs::{ChannelUpdate, DataLossProtect, DecodeError, OptionalField, UnsignedChannelUpdate};
use ln::chan_utils;
use ln::chan_utils::{ChannelPublicKeys, HolderCommitmentTransaction, CounterpartyChannelTransactionParameters, HTLC_SUCCESS_TX_WEIGHT, HTLC_TIMEOUT_TX_WEIGHT};
use chain::chaininterface::{FeeEstimator,ConfirmationTarget};
use util::test_utils;
use util::logger::Logger;
use bitcoin::secp256k1::{Secp256k1, Message, Signature, All};
+ use bitcoin::secp256k1::ffi::Signature as FFISignature;
use bitcoin::secp256k1::key::{SecretKey,PublicKey};
use bitcoin::hashes::sha256::Hash as Sha256;
use bitcoin::hashes::Hash;
let secp_ctx = Secp256k1::new();
let seed = [42; 32];
let network = Network::Testnet;
+ let chain_hash = genesis_block(network).header.block_hash();
+ let last_block_hash = chain_hash;
let keys_provider = test_utils::TestKeysInterface::new(&seed, network);
// Go through the flow of opening a channel between two nodes.
let mut node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, node_b_node_id, 10000000, 100000, 42, &config).unwrap();
// Create Node B's channel by receiving Node A's open_channel message
- let open_channel_msg = node_a_chan.get_open_channel(genesis_block(network).header.block_hash());
+ let open_channel_msg = node_a_chan.get_open_channel(chain_hash);
let node_b_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[7; 32]).unwrap());
let mut node_b_chan = Channel::<EnforcingSigner>::new_from_req(&&feeest, &&keys_provider, node_b_node_id, InitFeatures::known(), &open_channel_msg, 7, &config).unwrap();
}]};
let funding_outpoint = OutPoint{ txid: tx.txid(), index: 0 };
let funding_created_msg = node_a_chan.get_outbound_funding_created(funding_outpoint, &&logger).unwrap();
- let (funding_signed_msg, _) = node_b_chan.funding_created(&funding_created_msg, &&logger).unwrap();
+ let (funding_signed_msg, _) = node_b_chan.funding_created(&funding_created_msg, last_block_hash, &&logger).unwrap();
// Node B --> Node A: funding signed
- let _ = node_a_chan.funding_signed(&funding_signed_msg, &&logger);
+ let _ = node_a_chan.funding_signed(&funding_signed_msg, last_block_hash, &&logger);
// Now disconnect the two nodes and check that the commitment point in
// Node B's channel_reestablish message is sane.
}
}
+ #[test]
+ fn channel_update() {
+ let feeest = TestFeeEstimator{fee_est: 15000};
+ let secp_ctx = Secp256k1::new();
+ let seed = [42; 32];
+ let network = Network::Testnet;
+ let chain_hash = genesis_block(network).header.block_hash();
+ let keys_provider = test_utils::TestKeysInterface::new(&seed, network);
+
+ // Create a channel.
+ let node_b_node_id = PublicKey::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
+ let config = UserConfig::default();
+ let mut node_a_chan = Channel::<EnforcingSigner>::new_outbound(&&feeest, &&keys_provider, node_b_node_id, 10000000, 100000, 42, &config).unwrap();
+ assert!(node_a_chan.counterparty_forwarding_info.is_none());
+ assert_eq!(node_a_chan.holder_htlc_minimum_msat, 1); // the default
+ assert!(node_a_chan.counterparty_forwarding_info().is_none());
+
+ // Make sure that receiving a channel update will update the Channel as expected.
+ let update = ChannelUpdate {
+ contents: UnsignedChannelUpdate {
+ chain_hash,
+ short_channel_id: 0,
+ timestamp: 0,
+ flags: 0,
+ cltv_expiry_delta: 100,
+ htlc_minimum_msat: 5,
+ htlc_maximum_msat: OptionalField::Absent,
+ fee_base_msat: 110,
+ fee_proportional_millionths: 11,
+ excess_data: Vec::new(),
+ },
+ signature: Signature::from(unsafe { FFISignature::new() })
+ };
+ node_a_chan.channel_update(&update).unwrap();
+
+ // The counterparty can send an update with a higher minimum HTLC, but that shouldn't
+ // change our official htlc_minimum_msat.
+ assert_eq!(node_a_chan.holder_htlc_minimum_msat, 1);
+ match node_a_chan.counterparty_forwarding_info() {
+ Some(info) => {
+ assert_eq!(info.cltv_expiry_delta, 100);
+ assert_eq!(info.fee_base_msat, 110);
+ assert_eq!(info.fee_proportional_millionths, 11);
+ },
+ None => panic!("expected counterparty forwarding info to be Some")
+ }
+ }
+
#[test]
fn outbound_commitment_test() {
// Test vectors from BOLT 3 Appendix C:
projects / rust-lightning / blobdiff