mirror of
https://github.com/aljazceru/ark.git
synced 2025-12-17 12:14:21 +01:00
2be78b0115
* keep track of forfeit transaction funds * [btc-embedded] use p2wpkh address * [sdk] fix clients * use script as argument of BuildForfeitTxs
72 lines
2.0 KiB
Go
72 lines
2.0 KiB
Go
package common
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/btcsuite/btcd/btcutil"
|
|
"github.com/btcsuite/btcd/txscript"
|
|
"github.com/btcsuite/btcwallet/waddrmgr"
|
|
"github.com/lightningnetwork/lnd/input"
|
|
"github.com/lightningnetwork/lnd/lntypes"
|
|
"github.com/lightningnetwork/lnd/lnwallet/chainfee"
|
|
)
|
|
|
|
var TreeTxSize = (&input.TxWeightEstimator{}).
|
|
AddTaprootKeySpendInput(txscript.SigHashDefault). // parent
|
|
AddP2TROutput(). // left child
|
|
AddP2TROutput(). // right child
|
|
VSize()
|
|
|
|
// liquid node size is 2x the bitcoin node size (avoid min-relay-fee issues with the low fee rate on liquid)
|
|
var CovenantTreeTxSize = TreeTxSize * 2
|
|
|
|
var ConnectorTxSize = (&input.TxWeightEstimator{}).
|
|
AddP2WKHInput().
|
|
AddP2WKHOutput().
|
|
AddP2WKHOutput().
|
|
VSize()
|
|
|
|
func ComputeForfeitMinRelayFee(
|
|
feeRate chainfee.SatPerKVByte,
|
|
vtxoScriptTapTree TaprootTree,
|
|
aspScriptClass txscript.ScriptClass,
|
|
) (uint64, error) {
|
|
txWeightEstimator := &input.TxWeightEstimator{}
|
|
|
|
biggestVtxoLeafProof, err := BiggestLeafMerkleProof(vtxoScriptTapTree)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
ctrlBlock, err := txscript.ParseControlBlock(biggestVtxoLeafProof.ControlBlock)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
txWeightEstimator.AddP2PKHInput() // connector input
|
|
txWeightEstimator.AddTapscriptInput(
|
|
64*2, // forfeit witness = 2 signatures
|
|
&waddrmgr.Tapscript{
|
|
RevealedScript: biggestVtxoLeafProof.Script,
|
|
ControlBlock: ctrlBlock,
|
|
},
|
|
)
|
|
|
|
switch aspScriptClass {
|
|
case txscript.PubKeyHashTy:
|
|
txWeightEstimator.AddP2PKHOutput()
|
|
case txscript.ScriptHashTy:
|
|
txWeightEstimator.AddP2SHOutput()
|
|
case txscript.WitnessV0PubKeyHashTy:
|
|
txWeightEstimator.AddP2WKHOutput()
|
|
case txscript.WitnessV0ScriptHashTy:
|
|
txWeightEstimator.AddP2WSHOutput()
|
|
case txscript.WitnessV1TaprootTy:
|
|
txWeightEstimator.AddP2TROutput()
|
|
default:
|
|
return 0, fmt.Errorf("unknown asp script class: %v", aspScriptClass)
|
|
}
|
|
|
|
return uint64(feeRate.FeeForVSize(lntypes.VByte(txWeightEstimator.VSize())).ToUnit(btcutil.AmountSatoshi)), nil
|
|
}
|