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https://github.com/lightningnetwork/lnd.git
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64cf872846
In this commit, we fix three existing bugs in the way we make
`ResolutionReq` for breach handling:
1. We were passing in the commit blob of the *current* channel state,
instead of the one stored in the revocation log for this breached
state.
2. We were using theirDelay for CsvDelay, when we want ourDelay, which
in this case will be 1 CSV, as this is a non delayed output.
3. We also need to pass in the delay for the remote party's to_local
delayed output.
89 lines
2.7 KiB
Go
89 lines
2.7 KiB
Go
package lnwallet
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import (
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"github.com/btcsuite/btcd/btcutil"
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"github.com/btcsuite/btcd/wire"
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"github.com/lightningnetwork/lnd/fn"
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"github.com/lightningnetwork/lnd/input"
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"github.com/lightningnetwork/lnd/lnwire"
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"github.com/lightningnetwork/lnd/tlv"
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)
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// CloseType is an enum that represents the type of close that we are trying to
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// resolve.
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type CloseType uint8
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const (
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// LocalForceClose represents a local force close.
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LocalForceClose CloseType = iota
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// RemoteForceClose represents a remote force close.
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RemoteForceClose
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// BreachClose represents a breach by the remote party.
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Breach
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)
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// ResolutionReq is used to ask an outside sub-system for additional
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// information needed to resolve a contract.
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type ResolutionReq struct {
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// ChanPoint is the channel point of the channel that we are trying to
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// resolve.
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ChanPoint wire.OutPoint
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// ShortChanID is the short channel ID of the channel that we are
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// trying to resolve.
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ShortChanID lnwire.ShortChannelID
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// Initiator is a bool if we're the initiator of the channel.
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Initiator bool
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// CommitBlob is an optional commit blob for the channel.
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CommitBlob fn.Option[tlv.Blob]
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// FundingBlob is an optional funding blob for the channel.
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FundingBlob fn.Option[tlv.Blob]
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// Type is the type of the witness that we are trying to resolve.
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Type input.WitnessType
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// CloseType is the type of close that we are trying to resolve.
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CloseType CloseType
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// CommitTx is the force close commitment transaction.
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CommitTx *wire.MsgTx
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// CommitFee is the fee that was paid for the commitment transaction.
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CommitFee btcutil.Amount
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// ContractPoint is the outpoint of the contract we're trying to
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// resolve.
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ContractPoint wire.OutPoint
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// SignDesc is the sign descriptor for the contract.
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SignDesc input.SignDescriptor
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// KeyRing is the key ring for the channel.
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KeyRing *CommitmentKeyRing
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// CsvDelay is the CSV delay for the local output for this commitment.
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CsvDelay uint32
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// BreachCsvDelay is the CSV delay for the remote output. This is only
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// set when the CloseType is Breach. This indicates the CSV delay to
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// use for the remote party's to_local delayed output, that is now
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// rightfully ours in a breach situation.
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BreachCsvDelay fn.Option[uint32]
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// CltvDelay is the CLTV delay for the outpoint.
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CltvDelay fn.Option[uint32]
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}
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// AuxContractResolver is an interface that is used to resolve contracts that
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// may need additional outside information to resolve correctly.
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type AuxContractResolver interface {
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// ResolveContract is called to resolve a contract that needs
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// additional information to resolve properly. If no extra information
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// is required, a nil Result error is returned.
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ResolveContract(ResolutionReq) fn.Result[tlv.Blob]
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}
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