lnd.xprv/wallet/wallet_test.go

284 lines
8.0 KiB
Go

package wallet
import (
"crypto/sha256"
"fmt"
"io/ioutil"
"os"
"testing"
"time"
"github.com/btcsuite/btcd/btcec"
"github.com/btcsuite/btcd/txscript"
"github.com/btcsuite/btcd/wire"
"github.com/btcsuite/btcutil"
"github.com/btcsuite/btcwallet/waddrmgr"
"github.com/btcsuite/btcwallet/wtxmgr"
)
var (
privPass = []byte("private-test")
// For simplicity a single priv key controls all of our test outputs.
testWalletPrivKey = []byte{
0x2b, 0xd8, 0x06, 0xc9, 0x7f, 0x0e, 0x00, 0xaf,
0x1a, 0x1f, 0xc3, 0x32, 0x8f, 0xa7, 0x63, 0xa9,
0x26, 0x97, 0x23, 0xc8, 0xdb, 0x8f, 0xac, 0x4f,
0x93, 0xaf, 0x71, 0xdb, 0x18, 0x6d, 0x6e, 0x90,
}
// We're alice :)
bobsPrivKey = []byte{
0x81, 0xb6, 0x37, 0xd8, 0xfc, 0xd2, 0xc6, 0xda,
0x63, 0x59, 0xe6, 0x96, 0x31, 0x13, 0xa1, 0x17,
0xd, 0xe7, 0x95, 0xe4, 0xb7, 0x25, 0xb8, 0x4d,
0x1e, 0xb, 0x4c, 0xfd, 0x9e, 0xc5, 0x8c, 0xe9,
}
// Use a hard-coded HD seed in order to avoid derivation.
testHdSeed = []byte{
0xb7, 0x94, 0x38, 0x5f, 0x2d, 0x1e, 0xf7, 0xab,
0x4d, 0x92, 0x73, 0xd1, 0x90, 0x63, 0x81, 0xb4,
0x4f, 0x2f, 0x6f, 0x25, 0x88, 0xa3, 0xef, 0xb9,
0x6a, 0x49, 0x18, 0x83, 0x31, 0x98, 0x47, 0x53,
}
)
// bobNode represents the other party involved as a node within LN. Bob is our
// only "default-route", we have a direct connection with him.
type bobNode struct {
privKey *btcec.PrivateKey
multiSigKey *btcec.PublicKey
availableOutputs []*wire.TxIn
changeOutputs []*wire.TxOut
}
// signFundingTx generates signatures for all the inputs in the funding tx
// belonging to Bob.
func (b *bobNode) signFundingTx(fundingTx *wire.MsgTx) ([][]byte, error) {
bobSigs := make([][]byte, 0, len(b.availableOutputs))
bobPkScript := b.changeOutputs[0].PkScript
for i, _ := range fundingTx.TxIn {
// Alice has already signed this input
if fundingTx.TxIn[i].SignatureScript != nil {
continue
}
sigScript, err := txscript.SignatureScript(fundingTx, i,
bobPkScript, txscript.SigHashAll, b.privKey,
true)
if err != nil {
return nil, err
}
bobSigs[i] = sigScript
}
return bobSigs, nil
}
// newBobNode generates a test "ln node" to interact with Alice (us). For the
// funding transaction, bob has a single output totaling 7BTC. For our basic
// test, he'll fund the channel with 5BTC, leaving 2BTC to the change output.
// TODO(roasbeef): proper handling of change etc.
func newBobNode() (*bobNode, error) {
// First, parse Bob's priv key in order to obtain a key he'll use for the
// multi-sig funding transaction.
privKey, pubKey := btcec.PrivKeyFromBytes(btcec.S256(), bobsPrivKey)
// Next, generate an output redeemable by bob.
bobAddr, err := btcutil.NewAddressPubKey(privKey.PubKey().SerializeCompressed(),
ActiveNetParams)
if err != nil {
return nil, err
}
bobAddrScript, err := txscript.PayToAddrScript(bobAddr.AddressPubKeyHash())
if err != nil {
return nil, err
}
prevOut := wire.NewOutPoint(&wire.ShaHash{}, ^uint32(0))
// TODO(roasbeef): When the chain rpc is hooked in, assert bob's output
// actually exists and it unspent in the chain.
bobTxIn := wire.NewTxIn(prevOut, bobAddrScript)
// Using bobs priv key above, create a change address he can spend.
bobChangeOutput := wire.NewTxOut(2*1e8, bobAddrScript)
return &bobNode{
privKey: privKey,
multiSigKey: pubKey,
availableOutputs: []*wire.TxIn{bobTxIn},
changeOutputs: []*wire.TxOut{bobChangeOutput},
}, nil
}
// addTestTx adds a output spendable by our test wallet, marked as included in
// 'block'.
func addTestTx(w *LightningWallet, rec *wtxmgr.TxRecord, block *wtxmgr.BlockMeta) error {
err := w.wallet.TxStore.InsertTx(rec, block)
if err != nil {
return err
}
// Check every output to determine whether it is controlled by a wallet
// key. If so, mark the output as a credit.
for i, output := range rec.MsgTx.TxOut {
_, addrs, _, err := txscript.ExtractPkScriptAddrs(output.PkScript,
ActiveNetParams)
if err != nil {
// Non-standard outputs are skipped.
continue
}
for _, addr := range addrs {
ma, err := w.wallet.Manager.Address(addr)
if err == nil {
err = w.wallet.TxStore.AddCredit(rec, block, uint32(i),
ma.Internal())
if err != nil {
return err
}
err = w.wallet.Manager.MarkUsed(addr)
if err != nil {
return err
}
continue
}
// Missing addresses are skipped. Other errors should
// be propagated.
if !waddrmgr.IsError(err, waddrmgr.ErrAddressNotFound) {
return err
}
}
}
return nil
}
func genBlockHash(n int) *wire.ShaHash {
sha := sha256.Sum256([]byte{byte(n)})
hash, _ := wire.NewShaHash(sha[:])
return hash
}
func loadTestCredits(w *LightningWallet, numOutputs, btcPerOutput int) error {
// Import the priv key (converting to WIF) above that controls all our
// available outputs.
privKey, _ := btcec.PrivKeyFromBytes(btcec.S256(), testWalletPrivKey)
fmt.Println("unlocking wallet")
if err := w.wallet.Unlock(privPass, time.Duration(0)); err != nil {
return err
}
fmt.Println("wallet unlocked")
bs := &waddrmgr.BlockStamp{Hash: *genBlockHash(1), Height: 1}
wif, err := btcutil.NewWIF(privKey, ActiveNetParams, true)
if err != nil {
return err
}
fmt.Println("importing priv key")
if _, err := w.wallet.ImportPrivateKey(wif, bs, false); err != nil {
return nil
}
fmt.Println("priv key imported")
if err := w.wallet.Manager.SetSyncedTo(&waddrmgr.BlockStamp{int32(1), *genBlockHash(1)}); err != nil {
return err
}
blk := wtxmgr.BlockMeta{wtxmgr.Block{Hash: *genBlockHash(2), Height: 2}, time.Now()}
// Create a simple P2PKH pubkey script spendable by Alice. For simplicity
// all of Alice's spendable funds will reside in this output.
satosihPerOutput := int64(btcPerOutput * 1e8)
walletAddr, err := btcutil.NewAddressPubKey(privKey.PubKey().SerializeCompressed(),
ActiveNetParams)
if err != nil {
return err
}
walletScriptCredit, err := txscript.PayToAddrScript(walletAddr.AddressPubKeyHash())
if err != nil {
return err
}
// Create numOutputs outputs spendable by our wallet each holding btcPerOutput
// in satoshis.
tx := wire.NewMsgTx()
prevOut := wire.NewOutPoint(genBlockHash(999), 1)
txIn := wire.NewTxIn(prevOut, []byte{txscript.OP_0, txscript.OP_0})
tx.AddTxIn(txIn)
for i := 0; i < numOutputs; i++ {
tx.AddTxOut(wire.NewTxOut(satosihPerOutput, walletScriptCredit))
}
txCredit, err := wtxmgr.NewTxRecordFromMsgTx(tx, time.Now())
if err != nil {
return err
}
if err := addTestTx(w, txCredit, &blk); err != nil {
return err
}
if err := w.wallet.Manager.SetSyncedTo(&waddrmgr.BlockStamp{int32(2), *genBlockHash(2)}); err != nil {
return err
}
// Make the wallet think it's been synced to block 10. This way the
// outputs we added above will have sufficient confirmations
// (hard coded to 6 atm).
for i := 3; i < 11; i++ {
sha := *genBlockHash(i)
if err := w.wallet.Manager.SetSyncedTo(&waddrmgr.BlockStamp{int32(i), sha}); err != nil {
return err
}
}
return nil
}
// createTestWallet creates a test LightningWallet will a total of 20BTC
// available for funding channels.
func createTestWallet() (string, *LightningWallet, error) {
privPass := []byte("private-test")
tempTestDir, err := ioutil.TempDir("", "lnwallet")
if err != nil {
return "", nil, nil
}
wallet, err := NewLightningWallet(privPass, nil, testHdSeed, tempTestDir)
if err != nil {
return "", nil, err
}
fmt.Println("STARTING WALLET")
wallet.Start()
fmt.Println("WALLET STARTED")
// Load our test wallet with 5 outputs each holding 4BTC.
fmt.Println("loading credits")
if err := loadTestCredits(wallet, 5, 4); err != nil {
return "", nil, err
}
fmt.Println("credits loaded")
return tempTestDir, wallet, nil
}
func TestBasicWalletReservationWorkFlow(t *testing.T) {
// all stages
// fields on struct properly set
// funding transaction on disk
}
func TestFundingTransactiontxFees(t *testing.T) {
}
func TestFundingTransactionLockedOutputs(t *testing.T) {
}
func TestFundingTransactionCancellationFreeOutputs(t *testing.T) {
}
func TestFundingReservationInsufficientFunds(t *testing.T) {
}
func TestFundingReservationInvalidCounterpartySigs(t *testing.T) {
}