mirror of
https://github.com/lightningnetwork/lnd.git
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657 lines
20 KiB
Go
657 lines
20 KiB
Go
package walletunlocker_test
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import (
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"bytes"
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"context"
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"fmt"
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"os"
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"path"
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"testing"
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"time"
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"github.com/btcsuite/btcd/chaincfg"
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"github.com/btcsuite/btcwallet/snacl"
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"github.com/btcsuite/btcwallet/waddrmgr"
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"github.com/btcsuite/btcwallet/wallet"
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"github.com/lightningnetwork/lnd/aezeed"
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"github.com/lightningnetwork/lnd/keychain"
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"github.com/lightningnetwork/lnd/kvdb"
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"github.com/lightningnetwork/lnd/lnrpc"
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"github.com/lightningnetwork/lnd/lnwallet"
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"github.com/lightningnetwork/lnd/lnwallet/btcwallet"
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"github.com/lightningnetwork/lnd/macaroons"
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"github.com/lightningnetwork/lnd/walletunlocker"
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"github.com/stretchr/testify/require"
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)
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var (
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testPassword = []byte("test-password")
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testSeed = []byte("test-seed-123456789")
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testMac = []byte("fakemacaroon")
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testEntropy = [aezeed.EntropySize]byte{
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0x81, 0xb6, 0x37, 0xd8,
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0x63, 0x59, 0xe6, 0x96,
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0x0d, 0xe7, 0x95, 0xe4,
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0x1e, 0x0b, 0x4c, 0xfd,
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}
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testNetParams = &chaincfg.MainNetParams
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testRecoveryWindow uint32 = 150
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defaultTestTimeout = 30 * time.Second
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defaultRootKeyIDContext = macaroons.ContextWithRootKeyID(
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context.Background(), macaroons.DefaultRootKeyID,
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)
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)
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func testLoaderOpts(testDir string) []btcwallet.LoaderOption {
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dbDir := btcwallet.NetworkDir(testDir, testNetParams)
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return []btcwallet.LoaderOption{
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btcwallet.LoaderWithLocalWalletDB(dbDir, true, time.Minute),
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}
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}
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func createTestWallet(t *testing.T, dir string, netParams *chaincfg.Params) {
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createTestWalletWithPw(t, testPassword, testPassword, dir, netParams)
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}
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func createTestWalletWithPw(t *testing.T, pubPw, privPw []byte, dir string,
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netParams *chaincfg.Params) {
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// Instruct waddrmgr to use the cranked down scrypt parameters when
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// creating new wallet encryption keys.
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fastScrypt := waddrmgr.FastScryptOptions
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keyGen := func(passphrase *[]byte, config *waddrmgr.ScryptOptions) (
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*snacl.SecretKey, error) {
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return snacl.NewSecretKey(
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passphrase, fastScrypt.N, fastScrypt.R, fastScrypt.P,
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)
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}
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waddrmgr.SetSecretKeyGen(keyGen)
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// Create a new test wallet that uses fast scrypt as KDF.
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netDir := btcwallet.NetworkDir(dir, netParams)
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loader := wallet.NewLoader(
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netParams, netDir, true, kvdb.DefaultDBTimeout, 0,
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)
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_, err := loader.CreateNewWallet(
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pubPw, privPw, testSeed, time.Time{},
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)
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require.NoError(t, err)
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err = loader.UnloadWallet()
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require.NoError(t, err)
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}
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func createSeedAndMnemonic(t *testing.T,
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pass []byte) (*aezeed.CipherSeed, aezeed.Mnemonic) {
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cipherSeed, err := aezeed.New(
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keychain.CurrentKeyDerivationVersion, &testEntropy, time.Now(),
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)
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require.NoError(t, err)
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// With the new seed created, we'll convert it into a mnemonic phrase
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// that we'll send over to initialize the wallet.
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mnemonic, err := cipherSeed.ToMnemonic(pass)
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require.NoError(t, err)
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return cipherSeed, mnemonic
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}
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// openOrCreateTestMacStore opens or creates a bbolt DB and then initializes a
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// root key storage for that DB and then unlocks it, creating a root key in the
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// process.
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func openOrCreateTestMacStore(tempDir string, pw *[]byte,
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netParams *chaincfg.Params) (*macaroons.RootKeyStorage, error) {
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netDir := btcwallet.NetworkDir(tempDir, netParams)
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err := os.MkdirAll(netDir, 0700)
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if err != nil {
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return nil, err
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}
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db, err := kvdb.Create(
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kvdb.BoltBackendName, path.Join(netDir, "macaroons.db"),
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true, kvdb.DefaultDBTimeout,
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)
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if err != nil {
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return nil, err
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}
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store, err := macaroons.NewRootKeyStorage(db)
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if err != nil {
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_ = db.Close()
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return nil, err
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}
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err = store.CreateUnlock(pw)
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if err != nil {
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_ = store.Close()
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return nil, err
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}
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_, _, err = store.RootKey(defaultRootKeyIDContext)
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if err != nil {
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_ = store.Close()
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return nil, err
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}
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return store, nil
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}
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// TestGenSeedUserEntropy tests that the gen seed method generates a valid
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// cipher seed mnemonic phrase and user provided source of entropy.
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func TestGenSeed(t *testing.T) {
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t.Parallel()
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// First, we'll create a new test directory and unlocker service for
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// that directory.
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testDir := t.TempDir()
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service := walletunlocker.New(
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testNetParams, nil, false, testLoaderOpts(testDir),
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)
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// Now that the service has been created, we'll ask it to generate a
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// new seed for us given a test passphrase.
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aezeedPass := []byte("kek")
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genSeedReq := &lnrpc.GenSeedRequest{
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AezeedPassphrase: aezeedPass,
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SeedEntropy: testEntropy[:],
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}
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ctx := context.Background()
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seedResp, err := service.GenSeed(ctx, genSeedReq)
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require.NoError(t, err)
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// We should then be able to take the generated mnemonic, and properly
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// decipher both it.
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var mnemonic aezeed.Mnemonic
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copy(mnemonic[:], seedResp.CipherSeedMnemonic[:])
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_, err = mnemonic.ToCipherSeed(aezeedPass)
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require.NoError(t, err)
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}
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// TestGenSeedInvalidEntropy tests that the gen seed method generates a valid
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// cipher seed mnemonic pass phrase even when the user doesn't provide its own
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// source of entropy.
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func TestGenSeedGenerateEntropy(t *testing.T) {
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t.Parallel()
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// First, we'll create a new test directory and unlocker service for
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// that directory.
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testDir := t.TempDir()
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service := walletunlocker.New(
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testNetParams, nil, false, testLoaderOpts(testDir),
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)
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// Now that the service has been created, we'll ask it to generate a
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// new seed for us given a test passphrase. Note that we don't actually
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aezeedPass := []byte("kek")
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genSeedReq := &lnrpc.GenSeedRequest{
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AezeedPassphrase: aezeedPass,
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}
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ctx := context.Background()
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seedResp, err := service.GenSeed(ctx, genSeedReq)
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require.NoError(t, err)
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// We should then be able to take the generated mnemonic, and properly
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// decipher both it.
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var mnemonic aezeed.Mnemonic
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copy(mnemonic[:], seedResp.CipherSeedMnemonic[:])
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_, err = mnemonic.ToCipherSeed(aezeedPass)
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require.NoError(t, err)
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}
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// TestGenSeedInvalidEntropy tests that if a user attempt to create a seed with
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// the wrong number of bytes for the initial entropy, then the proper error is
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// returned.
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func TestGenSeedInvalidEntropy(t *testing.T) {
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t.Parallel()
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// First, we'll create a new test directory and unlocker service for
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// that directory.
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testDir := t.TempDir()
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service := walletunlocker.New(
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testNetParams, nil, false, testLoaderOpts(testDir),
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)
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// Now that the service has been created, we'll ask it to generate a
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// new seed for us given a test passphrase. However, we'll be using an
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// invalid set of entropy that's 55 bytes, instead of 15 bytes.
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aezeedPass := []byte("kek")
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genSeedReq := &lnrpc.GenSeedRequest{
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AezeedPassphrase: aezeedPass,
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SeedEntropy: bytes.Repeat([]byte("a"), 55),
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}
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// We should get an error now since the entropy source was invalid.
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ctx := context.Background()
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_, err := service.GenSeed(ctx, genSeedReq)
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require.Error(t, err)
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require.Contains(t, err.Error(), "incorrect entropy length")
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}
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// TestInitWallet tests that the user is able to properly initialize the wallet
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// given an existing cipher seed passphrase.
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func TestInitWallet(t *testing.T) {
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t.Parallel()
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// testDir is empty, meaning wallet was not created from before.
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testDir := t.TempDir()
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// Create new UnlockerService.
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service := walletunlocker.New(
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testNetParams, nil, false, testLoaderOpts(testDir),
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)
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// Once we have the unlocker service created, we'll now instantiate a
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// new cipher seed and its mnemonic.
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pass := []byte("test")
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cipherSeed, mnemonic := createSeedAndMnemonic(t, pass)
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// Now that we have all the necessary items, we'll now issue the Init
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// command to the wallet. This should check the validity of the cipher
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// seed, then send over the initialization information over the init
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// channel.
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ctx := context.Background()
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req := &lnrpc.InitWalletRequest{
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WalletPassword: testPassword,
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CipherSeedMnemonic: mnemonic[:],
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AezeedPassphrase: pass,
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RecoveryWindow: int32(testRecoveryWindow),
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StatelessInit: true,
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}
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errChan := make(chan error, 1)
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go func() {
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response, err := service.InitWallet(ctx, req)
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if err != nil {
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errChan <- err
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return
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}
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if !bytes.Equal(response.AdminMacaroon, testMac) {
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errChan <- fmt.Errorf("mismatched macaroon: "+
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"expected %x, got %x", testMac,
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response.AdminMacaroon)
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}
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}()
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// The same user passphrase, and also the plaintext cipher seed
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// should be sent over and match exactly.
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select {
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case err := <-errChan:
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t.Fatalf("InitWallet call failed: %v", err)
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case msg := <-service.InitMsgs:
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msgSeed := msg.WalletSeed
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require.Equal(t, testPassword, msg.Passphrase)
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require.Equal(
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t, cipherSeed.InternalVersion, msgSeed.InternalVersion,
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)
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require.Equal(t, cipherSeed.Birthday, msgSeed.Birthday)
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require.Equal(t, cipherSeed.Entropy, msgSeed.Entropy)
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require.Equal(t, testRecoveryWindow, msg.RecoveryWindow)
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require.Equal(t, true, msg.StatelessInit)
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// Send a fake macaroon that should be returned in the response
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// in the async code above.
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service.MacResponseChan <- testMac
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case <-time.After(defaultTestTimeout):
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t.Fatalf("password not received")
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}
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// Create a wallet in testDir.
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createTestWallet(t, testDir, testNetParams)
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// Now calling InitWallet should fail, since a wallet already exists in
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// the directory.
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_, err := service.InitWallet(ctx, req)
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require.Error(t, err)
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// Similarly, if we try to do GenSeed again, we should get an error as
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// the wallet already exists.
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_, err = service.GenSeed(ctx, &lnrpc.GenSeedRequest{})
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require.Error(t, err)
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}
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// TestInitWalletInvalidCipherSeed tests that if we attempt to create a wallet
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// with an invalid cipher seed, then we'll receive an error.
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func TestCreateWalletInvalidEntropy(t *testing.T) {
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t.Parallel()
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// testDir is empty, meaning wallet was not created from before.
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testDir := t.TempDir()
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// Create new UnlockerService.
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service := walletunlocker.New(
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testNetParams, nil, false, testLoaderOpts(testDir),
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)
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// We'll attempt to init the wallet with an invalid cipher seed and
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// passphrase.
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req := &lnrpc.InitWalletRequest{
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WalletPassword: testPassword,
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CipherSeedMnemonic: []string{"invalid", "seed"},
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AezeedPassphrase: []byte("fake pass"),
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}
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ctx := context.Background()
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_, err := service.InitWallet(ctx, req)
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require.Error(t, err)
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}
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// TestUnlockWallet checks that trying to unlock non-existing wallet fail, that
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// unlocking existing wallet with wrong passphrase fails, and that unlocking
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// existing wallet with correct passphrase succeeds.
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func TestUnlockWallet(t *testing.T) {
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t.Parallel()
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// testDir is empty, meaning wallet was not created from before.
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testDir := t.TempDir()
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// Create new UnlockerService that'll also drop the wallet's history on
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// unlock.
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service := walletunlocker.New(
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testNetParams, nil, true, testLoaderOpts(testDir),
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)
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ctx := context.Background()
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req := &lnrpc.UnlockWalletRequest{
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WalletPassword: testPassword,
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RecoveryWindow: int32(testRecoveryWindow),
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StatelessInit: true,
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}
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// Should fail to unlock non-existing wallet.
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_, err := service.UnlockWallet(ctx, req)
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require.Error(t, err)
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// Create a wallet we can try to unlock.
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createTestWallet(t, testDir, testNetParams)
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// Try unlocking this wallet with the wrong passphrase.
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wrongReq := &lnrpc.UnlockWalletRequest{
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WalletPassword: []byte("wrong-ofc"),
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}
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_, err = service.UnlockWallet(ctx, wrongReq)
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require.Error(t, err)
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// With the correct password, we should be able to unlock the wallet.
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errChan := make(chan error, 1)
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go func() {
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// With the correct password, we should be able to unlock the
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// wallet.
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_, err := service.UnlockWallet(ctx, req)
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if err != nil {
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errChan <- err
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}
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}()
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// Password and recovery window should be sent over the channel.
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select {
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case err := <-errChan:
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t.Fatalf("UnlockWallet call failed: %v", err)
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case unlockMsg := <-service.UnlockMsgs:
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require.Equal(t, testPassword, unlockMsg.Passphrase)
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require.Equal(t, testRecoveryWindow, unlockMsg.RecoveryWindow)
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require.Equal(t, true, unlockMsg.StatelessInit)
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// Send a fake macaroon that should be returned in the response
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// in the async code above.
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service.MacResponseChan <- testMac
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case <-time.After(defaultTestTimeout):
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t.Fatalf("password not received")
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}
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}
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// TestChangeWalletPasswordNewRootkey tests that we can successfully change the
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// wallet's password needed to unlock it and rotate the root key for the
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// macaroons in the same process.
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func TestChangeWalletPasswordNewRootkey(t *testing.T) {
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t.Parallel()
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// testDir is empty, meaning wallet was not created from before.
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testDir := t.TempDir()
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// Changing the password of the wallet will also try to change the
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// password of the macaroon DB. We create a default DB here but close it
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// immediately so the service does not fail when trying to open it.
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store, err := openOrCreateTestMacStore(
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testDir, &testPassword, testNetParams,
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)
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require.NoError(t, err)
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require.NoError(t, store.Close())
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// Create some files that will act as macaroon files that should be
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// deleted after a password change is successful with a new root key
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// requested.
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var tempFiles []string
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for i := 0; i < 3; i++ {
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file, err := os.CreateTemp(testDir, "")
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if err != nil {
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t.Fatalf("unable to create temp file: %v", err)
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}
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tempFiles = append(tempFiles, file.Name())
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require.NoError(t, file.Close())
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}
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// Create a new UnlockerService with our temp files.
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service := walletunlocker.New(
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testNetParams, tempFiles, false, testLoaderOpts(testDir),
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)
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service.SetMacaroonDB(store.Backend)
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ctx := context.Background()
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newPassword := []byte("hunter2???")
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req := &lnrpc.ChangePasswordRequest{
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CurrentPassword: testPassword,
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NewPassword: newPassword,
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NewMacaroonRootKey: true,
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}
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// Changing the password to a non-existing wallet should fail.
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_, err = service.ChangePassword(ctx, req)
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require.Error(t, err)
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// Create a wallet to test changing the password.
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createTestWallet(t, testDir, testNetParams)
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// Attempting to change the wallet's password using an incorrect
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// current password should fail.
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wrongReq := &lnrpc.ChangePasswordRequest{
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CurrentPassword: []byte("wrong-ofc"),
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NewPassword: newPassword,
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}
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_, err = service.ChangePassword(ctx, wrongReq)
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require.Error(t, err)
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// The files should still exist after an unsuccessful attempt to change
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// the wallet's password.
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for _, tempFile := range tempFiles {
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if _, err := os.Stat(tempFile); os.IsNotExist(err) {
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t.Fatal("file does not exist but it should")
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}
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}
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// Attempting to change the wallet's password using an invalid
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// new password should fail.
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wrongReq.NewPassword = []byte("8")
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_, err = service.ChangePassword(ctx, wrongReq)
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require.Error(t, err)
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// When providing the correct wallet's current password and a new
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// password that meets the length requirement, the password change
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// should succeed.
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errChan := make(chan error, 1)
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go doChangePassword(service, testDir, req, errChan)
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// The new password should be sent over the channel.
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select {
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case err := <-errChan:
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t.Fatalf("ChangePassword call failed: %v", err)
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case unlockMsg := <-service.UnlockMsgs:
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require.Equal(t, newPassword, unlockMsg.Passphrase)
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// Send a fake macaroon that should be returned in the response
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// in the async code above.
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service.MacResponseChan <- testMac
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|
|
case <-time.After(defaultTestTimeout):
|
|
t.Fatalf("password not received")
|
|
}
|
|
|
|
// The files should no longer exist.
|
|
for _, tempFile := range tempFiles {
|
|
f, err := os.Open(tempFile)
|
|
if err == nil {
|
|
_ = f.Close()
|
|
t.Fatal("file exists but it shouldn't")
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestChangeWalletPasswordStateless checks that trying to change the password
|
|
// of an existing wallet that was initialized stateless works when when the
|
|
// --stateless_init flat is set. Also checks that if no password is given,
|
|
// the default password is used.
|
|
func TestChangeWalletPasswordStateless(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
// testDir is empty, meaning wallet was not created from before.
|
|
testDir := t.TempDir()
|
|
|
|
// Changing the password of the wallet will also try to change the
|
|
// password of the macaroon DB. We create a default DB here but close it
|
|
// immediately so the service does not fail when trying to open it.
|
|
store, err := openOrCreateTestMacStore(
|
|
testDir, &lnwallet.DefaultPrivatePassphrase, testNetParams,
|
|
)
|
|
require.NoError(t, err)
|
|
require.NoError(t, store.Close())
|
|
|
|
// Create a temp file that will act as the macaroon DB file that will
|
|
// be deleted by changing the password.
|
|
tmpFile, err := os.CreateTemp(testDir, "")
|
|
require.NoError(t, err)
|
|
tempMacFile := tmpFile.Name()
|
|
err = tmpFile.Close()
|
|
require.NoError(t, err)
|
|
|
|
// Create a file name that does not exist that will be used as a
|
|
// macaroon file reference. The fact that the file does not exist should
|
|
// not throw an error when --stateless_init is used.
|
|
nonExistingFile := path.Join(testDir, "does-not-exist")
|
|
|
|
// Create a new UnlockerService with our temp files.
|
|
service := walletunlocker.New(
|
|
testNetParams, []string{
|
|
tempMacFile, nonExistingFile,
|
|
}, false, testLoaderOpts(testDir),
|
|
)
|
|
service.SetMacaroonDB(store.Backend)
|
|
|
|
// Create a wallet we can try to unlock. We use the default password
|
|
// so we can check that the unlocker service defaults to this when
|
|
// we give it an empty CurrentPassword to indicate we come from a
|
|
// --noencryptwallet state.
|
|
createTestWalletWithPw(
|
|
t, lnwallet.DefaultPublicPassphrase,
|
|
lnwallet.DefaultPrivatePassphrase, testDir, testNetParams,
|
|
)
|
|
|
|
// We make sure that we get a proper error message if we forget to
|
|
// add the --stateless_init flag but the macaroon files don't exist.
|
|
badReq := &lnrpc.ChangePasswordRequest{
|
|
NewPassword: testPassword,
|
|
NewMacaroonRootKey: true,
|
|
}
|
|
ctx := context.Background()
|
|
_, err = service.ChangePassword(ctx, badReq)
|
|
require.Error(t, err)
|
|
|
|
// Prepare the correct request we are going to send to the unlocker
|
|
// service. We don't provide a current password to indicate there
|
|
// was none set before.
|
|
req := &lnrpc.ChangePasswordRequest{
|
|
NewPassword: testPassword,
|
|
StatelessInit: true,
|
|
NewMacaroonRootKey: true,
|
|
}
|
|
|
|
// Since we indicated the wallet was initialized stateless, the service
|
|
// will block until it receives the macaroon through the channel
|
|
// provided in the message in UnlockMsgs. So we need to call the service
|
|
// async and then wait for the unlock message to arrive so we can send
|
|
// back a fake macaroon.
|
|
errChan := make(chan error, 1)
|
|
go doChangePassword(service, testDir, req, errChan)
|
|
|
|
// Password and recovery window should be sent over the channel.
|
|
select {
|
|
case err := <-errChan:
|
|
t.Fatalf("ChangePassword call failed: %v", err)
|
|
|
|
case unlockMsg := <-service.UnlockMsgs:
|
|
require.Equal(t, testPassword, unlockMsg.Passphrase)
|
|
|
|
// Send a fake macaroon that should be returned in the response
|
|
// in the async code above.
|
|
service.MacResponseChan <- testMac
|
|
require.NoError(t, unlockMsg.UnloadWallet())
|
|
|
|
case <-time.After(defaultTestTimeout):
|
|
t.Fatalf("password not received")
|
|
}
|
|
}
|
|
|
|
func doChangePassword(service *walletunlocker.UnlockerService, testDir string,
|
|
req *lnrpc.ChangePasswordRequest, errChan chan error) {
|
|
|
|
// When providing the correct wallet's current password and a
|
|
// new password that meets the length requirement, the password
|
|
// change should succeed.
|
|
ctx := context.Background()
|
|
response, err := service.ChangePassword(ctx, req)
|
|
if err != nil {
|
|
errChan <- fmt.Errorf("could not change password: %v", err)
|
|
return
|
|
}
|
|
|
|
if !bytes.Equal(response.AdminMacaroon, testMac) {
|
|
errChan <- fmt.Errorf("mismatched macaroon: expected "+
|
|
"%x, got %x", testMac, response.AdminMacaroon)
|
|
}
|
|
|
|
// Close the macaroon DB and try to open it and read the root
|
|
// key with the new password.
|
|
store, err := openOrCreateTestMacStore(
|
|
testDir, &testPassword, testNetParams,
|
|
)
|
|
if err != nil {
|
|
errChan <- fmt.Errorf("could not create test store: %v", err)
|
|
return
|
|
}
|
|
_, _, err = store.RootKey(defaultRootKeyIDContext)
|
|
if err != nil {
|
|
errChan <- fmt.Errorf("could not get root key: %v", err)
|
|
return
|
|
}
|
|
|
|
// Do cleanup now. Since we are in a go func, the defer at the
|
|
// top of the outer would not work, because it would delete
|
|
// the directory before we could check the content in here.
|
|
err = store.Close()
|
|
if err != nil {
|
|
errChan <- fmt.Errorf("could not close store: %v", err)
|
|
return
|
|
}
|
|
}
|