lnd.xprv/walletunlocker/service_test.go

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package walletunlocker_test
import (
"bytes"
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"context"
"io/ioutil"
"os"
"strings"
"testing"
"time"
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"github.com/btcsuite/btcd/chaincfg"
"github.com/btcsuite/btcwallet/wallet"
"github.com/lightningnetwork/lnd/aezeed"
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"github.com/lightningnetwork/lnd/keychain"
"github.com/lightningnetwork/lnd/lnrpc"
"github.com/lightningnetwork/lnd/lnwallet/btcwallet"
"github.com/lightningnetwork/lnd/walletunlocker"
)
var (
testPassword = []byte("test-password")
testSeed = []byte("test-seed-123456789")
testEntropy = [aezeed.EntropySize]byte{
0x81, 0xb6, 0x37, 0xd8,
0x63, 0x59, 0xe6, 0x96,
0x0d, 0xe7, 0x95, 0xe4,
0x1e, 0x0b, 0x4c, 0xfd,
}
testNetParams = &chaincfg.MainNetParams
testRecoveryWindow uint32 = 150
)
func createTestWallet(t *testing.T, dir string, netParams *chaincfg.Params) {
netDir := btcwallet.NetworkDir(dir, netParams)
loader := wallet.NewLoader(netParams, netDir, 0)
_, err := loader.CreateNewWallet(
testPassword, testPassword, testSeed, time.Time{},
)
if err != nil {
t.Fatalf("failed creating wallet: %v", err)
}
err = loader.UnloadWallet()
if err != nil {
t.Fatalf("failed unloading wallet: %v", err)
}
}
// TestGenSeedUserEntropy tests that the gen seed method generates a valid
// cipher seed mnemonic phrase and user provided source of entropy.
func TestGenSeed(t *testing.T) {
t.Parallel()
// First, we'll create a new test directory and unlocker service for
// that directory.
testDir, err := ioutil.TempDir("", "testcreate")
if err != nil {
t.Fatalf("unable to create temp directory: %v", err)
}
defer os.RemoveAll(testDir)
service := walletunlocker.New(testDir, testNetParams, nil)
// Now that the service has been created, we'll ask it to generate a
// new seed for us given a test passphrase.
aezeedPass := []byte("kek")
genSeedReq := &lnrpc.GenSeedRequest{
AezeedPassphrase: aezeedPass,
SeedEntropy: testEntropy[:],
}
ctx := context.Background()
seedResp, err := service.GenSeed(ctx, genSeedReq)
if err != nil {
t.Fatalf("unable to generate seed: %v", err)
}
// We should then be able to take the generated mnemonic, and properly
// decipher both it.
var mnemonic aezeed.Mnemonic
copy(mnemonic[:], seedResp.CipherSeedMnemonic[:])
_, err = mnemonic.ToCipherSeed(aezeedPass)
if err != nil {
t.Fatalf("unable to decipher cipher seed: %v", err)
}
}
// TestGenSeedInvalidEntropy tests that the gen seed method generates a valid
// cipher seed mnemonic pass phrase even when the user doesn't provide its own
// source of entropy.
func TestGenSeedGenerateEntropy(t *testing.T) {
t.Parallel()
// First, we'll create a new test directory and unlocker service for
// that directory.
testDir, err := ioutil.TempDir("", "testcreate")
if err != nil {
t.Fatalf("unable to create temp directory: %v", err)
}
defer func() {
os.RemoveAll(testDir)
}()
service := walletunlocker.New(testDir, testNetParams, nil)
// Now that the service has been created, we'll ask it to generate a
// new seed for us given a test passphrase. Note that we don't actually
aezeedPass := []byte("kek")
genSeedReq := &lnrpc.GenSeedRequest{
AezeedPassphrase: aezeedPass,
}
ctx := context.Background()
seedResp, err := service.GenSeed(ctx, genSeedReq)
if err != nil {
t.Fatalf("unable to generate seed: %v", err)
}
// We should then be able to take the generated mnemonic, and properly
// decipher both it.
var mnemonic aezeed.Mnemonic
copy(mnemonic[:], seedResp.CipherSeedMnemonic[:])
_, err = mnemonic.ToCipherSeed(aezeedPass)
if err != nil {
t.Fatalf("unable to decipher cipher seed: %v", err)
}
}
// TestGenSeedInvalidEntropy tests that if a user attempt to create a seed with
// the wrong number of bytes for the initial entropy, then the proper error is
// returned.
func TestGenSeedInvalidEntropy(t *testing.T) {
t.Parallel()
// First, we'll create a new test directory and unlocker service for
// that directory.
testDir, err := ioutil.TempDir("", "testcreate")
if err != nil {
t.Fatalf("unable to create temp directory: %v", err)
}
defer func() {
os.RemoveAll(testDir)
}()
service := walletunlocker.New(testDir, testNetParams, nil)
// Now that the service has been created, we'll ask it to generate a
// new seed for us given a test passphrase. However, we'll be using an
// invalid set of entropy that's 55 bytes, instead of 15 bytes.
aezeedPass := []byte("kek")
genSeedReq := &lnrpc.GenSeedRequest{
AezeedPassphrase: aezeedPass,
SeedEntropy: bytes.Repeat([]byte("a"), 55),
}
// We should get an error now since the entropy source was invalid.
ctx := context.Background()
_, err = service.GenSeed(ctx, genSeedReq)
if err == nil {
t.Fatalf("seed creation should've failed")
}
if !strings.Contains(err.Error(), "incorrect entropy length") {
t.Fatalf("wrong error, expected incorrect entropy length")
}
}
// TestInitWallet tests that the user is able to properly initialize the wallet
// given an existing cipher seed passphrase.
func TestInitWallet(t *testing.T) {
t.Parallel()
// testDir is empty, meaning wallet was not created from before.
testDir, err := ioutil.TempDir("", "testcreate")
if err != nil {
t.Fatalf("unable to create temp directory: %v", err)
}
defer func() {
os.RemoveAll(testDir)
}()
// Create new UnlockerService.
service := walletunlocker.New(testDir, testNetParams, nil)
// Once we have the unlocker service created, we'll now instantiate a
// new cipher seed instance.
cipherSeed, err := aezeed.New(
keychain.KeyDerivationVersion, &testEntropy, time.Now(),
)
if err != nil {
t.Fatalf("unable to create seed: %v", err)
}
// With the new seed created, we'll convert it into a mnemonic phrase
// that we'll send over to initialize the wallet.
pass := []byte("test")
mnemonic, err := cipherSeed.ToMnemonic(pass)
if err != nil {
t.Fatalf("unable to create mnemonic: %v", err)
}
// Now that we have all the necessary items, we'll now issue the Init
// command to the wallet. This should check the validity of the cipher
// seed, then send over the initialization information over the init
// channel.
ctx := context.Background()
req := &lnrpc.InitWalletRequest{
WalletPassword: testPassword,
CipherSeedMnemonic: []string(mnemonic[:]),
AezeedPassphrase: pass,
RecoveryWindow: int32(testRecoveryWindow),
}
_, err = service.InitWallet(ctx, req)
if err != nil {
t.Fatalf("InitWallet call failed: %v", err)
}
// The same user passphrase, and also the plaintext cipher seed
// should be sent over and match exactly.
select {
case msg := <-service.InitMsgs:
if !bytes.Equal(msg.Passphrase, testPassword) {
t.Fatalf("expected to receive password %x, "+
"got %x", testPassword, msg.Passphrase)
}
if msg.WalletSeed.InternalVersion != cipherSeed.InternalVersion {
t.Fatalf("mismatched versions: expected %v, "+
"got %v", cipherSeed.InternalVersion,
msg.WalletSeed.InternalVersion)
}
if msg.WalletSeed.Birthday != cipherSeed.Birthday {
t.Fatalf("mismatched birthday: expected %v, "+
"got %v", cipherSeed.Birthday,
msg.WalletSeed.Birthday)
}
if msg.WalletSeed.Entropy != cipherSeed.Entropy {
t.Fatalf("mismatched versions: expected %x, "+
"got %x", cipherSeed.Entropy[:],
msg.WalletSeed.Entropy[:])
}
if msg.RecoveryWindow != testRecoveryWindow {
t.Fatalf("mismatched recovery window: expected %v,"+
"got %v", testRecoveryWindow,
msg.RecoveryWindow)
}
case <-time.After(3 * time.Second):
t.Fatalf("password not received")
}
// Create a wallet in testDir.
createTestWallet(t, testDir, testNetParams)
// Now calling InitWallet should fail, since a wallet already exists in
// the directory.
_, err = service.InitWallet(ctx, req)
if err == nil {
t.Fatalf("InitWallet did not fail as expected")
}
// Similarly, if we try to do GenSeed again, we should get an error as
// the wallet already exists.
_, err = service.GenSeed(ctx, &lnrpc.GenSeedRequest{})
if err == nil {
t.Fatalf("seed generation should have failed")
}
}
// TestInitWalletInvalidCipherSeed tests that if we attempt to create a wallet
// with an invalid cipher seed, then we'll receive an error.
func TestCreateWalletInvalidEntropy(t *testing.T) {
t.Parallel()
// testDir is empty, meaning wallet was not created from before.
testDir, err := ioutil.TempDir("", "testcreate")
if err != nil {
t.Fatalf("unable to create temp directory: %v", err)
}
defer func() {
os.RemoveAll(testDir)
}()
// Create new UnlockerService.
service := walletunlocker.New(testDir, testNetParams, nil)
// We'll attempt to init the wallet with an invalid cipher seed and
// passphrase.
req := &lnrpc.InitWalletRequest{
WalletPassword: testPassword,
CipherSeedMnemonic: []string{"invalid", "seed"},
AezeedPassphrase: []byte("fake pass"),
}
ctx := context.Background()
_, err = service.InitWallet(ctx, req)
if err == nil {
t.Fatalf("wallet creation should have failed")
}
}
// TestUnlockWallet checks that trying to unlock non-existing wallet fail, that
// unlocking existing wallet with wrong passphrase fails, and that unlocking
// existing wallet with correct passphrase succeeds.
func TestUnlockWallet(t *testing.T) {
t.Parallel()
// testDir is empty, meaning wallet was not created from before.
testDir, err := ioutil.TempDir("", "testunlock")
if err != nil {
t.Fatalf("unable to create temp directory: %v", err)
}
defer func() {
os.RemoveAll(testDir)
}()
// Create new UnlockerService.
service := walletunlocker.New(testDir, testNetParams, nil)
ctx := context.Background()
req := &lnrpc.UnlockWalletRequest{
WalletPassword: testPassword,
RecoveryWindow: int32(testRecoveryWindow),
}
// Should fail to unlock non-existing wallet.
_, err = service.UnlockWallet(ctx, req)
if err == nil {
t.Fatalf("expected call to UnlockWallet to fail")
}
// Create a wallet we can try to unlock.
createTestWallet(t, testDir, testNetParams)
// Try unlocking this wallet with the wrong passphrase.
wrongReq := &lnrpc.UnlockWalletRequest{
WalletPassword: []byte("wrong-ofc"),
}
_, err = service.UnlockWallet(ctx, wrongReq)
if err == nil {
t.Fatalf("expected call to UnlockWallet to fail")
}
// With the correct password, we should be able to unlock the wallet.
_, err = service.UnlockWallet(ctx, req)
if err != nil {
t.Fatalf("unable to unlock wallet: %v", err)
}
// Password and recovery window should be sent over the channel.
select {
case unlockMsg := <-service.UnlockMsgs:
if !bytes.Equal(unlockMsg.Passphrase, testPassword) {
t.Fatalf("expected to receive password %x, got %x",
testPassword, unlockMsg.Passphrase)
}
if unlockMsg.RecoveryWindow != testRecoveryWindow {
t.Fatalf("expected to receive recovery window %d, "+
"got %d", testRecoveryWindow,
unlockMsg.RecoveryWindow)
}
case <-time.After(3 * time.Second):
t.Fatalf("password not received")
}
}
// TestChangeWalletPassword tests that we can successfully change the wallet's
// password needed to unlock it.
func TestChangeWalletPassword(t *testing.T) {
t.Parallel()
// testDir is empty, meaning wallet was not created from before.
testDir, err := ioutil.TempDir("", "testchangepassword")
if err != nil {
t.Fatalf("unable to create temp directory: %v", err)
}
defer os.RemoveAll(testDir)
// Create some files that will act as macaroon files that should be
// deleted after a password change is successful.
var tempFiles []string
for i := 0; i < 3; i++ {
file, err := ioutil.TempFile(testDir, "")
if err != nil {
t.Fatalf("unable to create temp file: %v", err)
}
tempFiles = append(tempFiles, file.Name())
file.Close()
}
// Create a new UnlockerService with our temp files.
service := walletunlocker.New(testDir, testNetParams, tempFiles)
ctx := context.Background()
newPassword := []byte("hunter2???")
req := &lnrpc.ChangePasswordRequest{
CurrentPassword: testPassword,
NewPassword: newPassword,
}
// Changing the password to a non-existing wallet should fail.
_, err = service.ChangePassword(ctx, req)
if err == nil {
t.Fatal("expected call to ChangePassword to fail")
}
// Create a wallet to test changing the password.
createTestWallet(t, testDir, testNetParams)
// Attempting to change the wallet's password using an incorrect
// current password should fail.
wrongReq := &lnrpc.ChangePasswordRequest{
CurrentPassword: []byte("wrong-ofc"),
NewPassword: newPassword,
}
_, err = service.ChangePassword(ctx, wrongReq)
if err == nil {
t.Fatal("expected call to ChangePassword to fail")
}
// The files should still exist after an unsuccessful attempt to change
// the wallet's password.
for _, tempFile := range tempFiles {
if _, err := os.Stat(tempFile); os.IsNotExist(err) {
t.Fatal("file does not exist but it should")
}
}
// Attempting to change the wallet's password using an invalid
// new password should fail.
wrongReq.NewPassword = []byte("8")
_, err = service.ChangePassword(ctx, wrongReq)
if err == nil {
t.Fatal("expected call to ChangePassword to fail")
}
// When providing the correct wallet's current password and a new
// password that meets the length requirement, the password change
// should succeed.
_, err = service.ChangePassword(ctx, req)
if err != nil {
t.Fatalf("unable to change wallet's password: %v", err)
}
// The files should no longer exist.
for _, tempFile := range tempFiles {
if _, err := os.Open(tempFile); err == nil {
t.Fatal("file exists but it shouldn't")
}
}
// The new password should be sent over the channel.
select {
case unlockMsg := <-service.UnlockMsgs:
if !bytes.Equal(unlockMsg.Passphrase, newPassword) {
t.Fatalf("expected to receive password %x, got %x",
testPassword, unlockMsg.Passphrase)
}
case <-time.After(3 * time.Second):
t.Fatalf("password not received")
}
}