use crypto::hkdf::{hkdf_extract,hkdf_expand};
use ln::msgs;
-use ln::msgs::{HandleError, MsgEncodable};
+use ln::msgs::{ErrorAction, HandleError, MsgEncodable};
use ln::channelmonitor::ChannelMonitor;
use ln::channelmanager::{PendingForwardHTLCInfo, HTLCFailReason};
use ln::chan_utils::{TxCreationKeys,HTLCOutputInCommitment,HTLC_SUCCESS_TX_WEIGHT,HTLC_TIMEOUT_TX_WEIGHT};
/// anyway).
LocalRemoved,
/// Removed by us, sent a new commitment_signed and got a revoke_and_ack. Just waiting on an
- /// updated local commitment transaction.
+ /// updated local commitment transaction. Implies local_removed_fulfilled.
LocalRemovedAwaitingCommitment,
}
/// to detect unconfirmation after a serialize-unserialize roudtrip where we may not see a full
/// series of block_connected/block_disconnected calls. Obviously this is not a guarantee as we
/// could miss the funding_tx_confirmed_in block as well, but it serves as a useful fallback.
- funding_tx_confirmed_in: Sha256dHash,
+ funding_tx_confirmed_in: Option<Sha256dHash>,
short_channel_id: Option<u64>,
/// Used to deduplicate block_connected callbacks
last_block_connected: Sha256dHash,
last_sent_closing_fee: None,
- funding_tx_confirmed_in: Default::default(),
+ funding_tx_confirmed_in: None,
short_channel_id: None,
last_block_connected: Default::default(),
funding_tx_confirmations: 0,
last_sent_closing_fee: None,
- funding_tx_confirmed_in: Default::default(),
+ funding_tx_confirmed_in: None,
short_channel_id: None,
last_block_connected: Default::default(),
funding_tx_confirmations: 0,
} else {
match htlc.state {
HTLCState::AwaitingRemoteRevokeToRemove|HTLCState::AwaitingRemovedRemoteRevoke => {
- if generated_by_local && htlc.fail_reason.is_none() {
+ if htlc.fail_reason.is_none() {
value_to_self_msat_offset -= htlc.amount_msat as i64;
}
},
}
},
HTLCState::LocalRemovedAwaitingCommitment => {
+ assert!(htlc.local_removed_fulfilled);
value_to_self_msat_offset += htlc.amount_msat as i64;
},
_ => {},
self.user_id
}
+ /// May only be called after funding has been initiated (ie is_funding_initiated() is true)
pub fn channel_monitor(&self) -> ChannelMonitor {
if self.channel_state < ChannelState::FundingCreated as u32 {
panic!("Can't get a channel monitor until funding has been created");
self.is_usable()
}
+ /// Returns true if funding_created was sent/received.
+ pub fn is_funding_initiated(&self) -> bool {
+ self.channel_state >= ChannelState::FundingCreated as u32
+ }
+
/// Returns true if this channel is fully shut down. True here implies that no further actions
/// may/will be taken on this channel, and thus this object should be freed. Any future changes
/// will be handled appropriately by the chain monitor.
/// Called by channelmanager based on chain blocks being connected.
/// Note that we only need to use this to detect funding_signed, anything else is handled by
/// the channel_monitor.
- pub fn block_connected(&mut self, header: &BlockHeader, height: u32, txn_matched: &[&Transaction], indexes_of_txn_matched: &[u32]) -> Option<msgs::FundingLocked> {
+ /// In case of Err, the channel may have been closed, at which point the standard requirements
+ /// apply - no calls may be made except those explicitly stated to be allowed post-shutdown.
+ /// Only returns an ErrorAction of DisconnectPeer, if Err.
+ pub fn block_connected(&mut self, header: &BlockHeader, height: u32, txn_matched: &[&Transaction], indexes_of_txn_matched: &[u32]) -> Result<Option<msgs::FundingLocked>, HandleError> {
let non_shutdown_state = self.channel_state & (!BOTH_SIDES_SHUTDOWN_MASK);
if self.funding_tx_confirmations > 0 {
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 non_shutdown_state == ChannelState::FundingSent as u32 {
+ 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 & BOTH_SIDES_SHUTDOWN_MASK);
self.channel_update_count += 1;
- //TODO: Something about a state where we "lost confirmation"
+ true
+ } else if self.channel_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.funding_tx_confirmed_in = header.bitcoin_hash();
+ 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.bitcoin_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.
- 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();
- return Some(msgs::FundingLocked {
- channel_id: self.channel_id,
- next_per_commitment_point: next_per_commitment_point,
- });
+ 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();
+ return Ok(Some(msgs::FundingLocked {
+ channel_id: self.channel_id,
+ next_per_commitment_point: next_per_commitment_point,
+ }));
+ }
}
}
}
tx.output[txo_idx].value != self.channel_value_satoshis {
self.channel_state = ChannelState::ShutdownComplete as u32;
self.channel_update_count += 1;
+ return Err(HandleError{err: "funding tx had wrong script/value", action: Some(ErrorAction::DisconnectPeer{msg: None})});
} else {
self.funding_tx_confirmations = 1;
self.short_channel_id = Some(((height as u64) << (5*8)) |
}
}
}
- None
+ Ok(None)
}
/// Called by channelmanager based on chain blocks being disconnected.
return true;
}
}
- if header.bitcoin_hash() == self.funding_tx_confirmed_in {
+ if Some(header.bitcoin_hash()) == self.funding_tx_confirmed_in {
self.funding_tx_confirmations = CONF_TARGET as u64 - 1;
}
false
projects / rust-lightning / blobdiff