highperfocused/lnd
1
0
Fork 0
mirror of https://github.com/lightningnetwork/lnd.git synced 2025-03-26 01:33:02 +01:00
Code Issues Packages Projects Releases Wiki Activity

chanfunding: fix PSBT funding for taproot chans

Browse Source
This commit is contained in:
Oliver Gugger 2023-08-28 11:13:25 +02:00
parent c6fcceb35b
commit 646444cdfe
No known key found for this signature in database
GPG Key ID: 8E4256593F177720
1 changed files with 12 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
lnwallet/chanfunding/psbt_assembler.go
View File

@ -1,7 +1,6 @@
package chanfunding
import (
"crypto/sha256"
"errors"
"fmt"
"sync"
@ -178,23 +177,26 @@ func (i *PsbtIntent) FundingParams() (btcutil.Address, int64, *psbt.Packet,
// The funding output needs to be known already at this point, which
// means we need to have the local and remote multisig keys bound
// already.
witnessScript, out, err := i.FundingOutput()
_, out, err := i.FundingOutput()
if err != nil {
return nil, 0, nil, fmt.Errorf("unable to create funding "+
"output: %v", err)
}
witnessScriptHash := sha256.Sum256(witnessScript)
// Encode the address in the human readable bech32 format.
addr, err := btcutil.NewAddressWitnessScriptHash(
witnessScriptHash[:], i.netParams,
)
script, err := txscript.ParsePkScript(out.PkScript)
if err != nil {
return nil, 0, nil, fmt.Errorf("unable to parse funding "+
"output script: %w", err)
}
// Encode the address in the human-readable bech32 format.
addr, err := script.Address(i.netParams)
if err != nil {
return nil, 0, nil, fmt.Errorf("unable to encode address: %v",
err)
}
// We'll also encode the address/amount in a machine readable raw PSBT
// We'll also encode the address/amount in a machine-readable raw PSBT
// format. If the user supplied a base PSBT, we'll add the output to
// that one, otherwise we'll create a new one.
packet := i.BasePsbt
@ -597,8 +599,8 @@ func verifyAllInputsSegWit(txIns []*wire.TxIn, ins []psbt.PInput) error {
txIn := txIns[idx]
txOut := utxo.TxOut[txIn.PreviousOutPoint.Index]
if !isSegWitScript(txOut.PkScript) &&
!isSegWitScript(in.RedeemScript) {
if !txscript.IsWitnessProgram(txOut.PkScript) &&
!txscript.IsWitnessProgram(in.RedeemScript) {
return fmt.Errorf("input %d is non-SegWit "+
"spend or missing redeem script", idx)
@ -614,19 +616,3 @@ func verifyAllInputsSegWit(txIns []*wire.TxIn, ins []psbt.PInput) error {
return nil
}
// isSegWitScript returns true if the given pkScript can be parsed successfully
// as a SegWit v0 spend.
func isSegWitScript(pkScript []byte) bool {
if len(pkScript) == 0 {
return false
}
parsed, err := txscript.ParsePkScript(pkScript)
if err != nil {
return false
}
return parsed.Class() == txscript.WitnessV0PubKeyHashTy ||
parsed.Class() == txscript.WitnessV0ScriptHashTy
}