260 lines
8.3 KiB
Go
260 lines
8.3 KiB
Go
package macaroons_test
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import (
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"context"
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"encoding/hex"
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"io/ioutil"
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"os"
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"path"
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"testing"
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"github.com/lightningnetwork/lnd/kvdb"
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"github.com/lightningnetwork/lnd/macaroons"
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"github.com/stretchr/testify/require"
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"google.golang.org/grpc/metadata"
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"gopkg.in/macaroon-bakery.v2/bakery"
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"gopkg.in/macaroon-bakery.v2/bakery/checkers"
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)
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var (
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testOperation = bakery.Op{
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Entity: "testEntity",
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Action: "read",
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}
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testOperationURI = bakery.Op{
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Entity: macaroons.PermissionEntityCustomURI,
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Action: "SomeMethod",
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}
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defaultPw = []byte("hello")
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)
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// setupTestRootKeyStorage creates a dummy root key storage by
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// creating a temporary macaroons.db and initializing it with the
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// default password of 'hello'. Only the path to the temporary
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// DB file is returned, because the service will open the file
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// and read the store on its own.
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func setupTestRootKeyStorage(t *testing.T) string {
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tempDir, err := ioutil.TempDir("", "macaroonstore-")
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if err != nil {
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t.Fatalf("Error creating temp dir: %v", err)
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}
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db, err := kvdb.Create(
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kvdb.BoltBackendName, path.Join(tempDir, "macaroons.db"), true,
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kvdb.DefaultDBTimeout,
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)
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if err != nil {
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t.Fatalf("Error opening store DB: %v", 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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t.Fatalf("Error creating root key store: %v", err)
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}
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defer store.Close()
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err = store.CreateUnlock(&defaultPw)
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if err != nil {
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t.Fatalf("error creating unlock: %v", err)
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}
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return tempDir
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}
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// TestNewService tests the creation of the macaroon service.
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func TestNewService(t *testing.T) {
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// First, initialize a dummy DB file with a store that the service
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// can read from. Make sure the file is removed in the end.
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tempDir := setupTestRootKeyStorage(t)
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defer os.RemoveAll(tempDir)
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// Second, create the new service instance, unlock it and pass in a
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// checker that we expect it to add to the bakery.
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service, err := macaroons.NewService(
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tempDir, "lnd", false, kvdb.DefaultDBTimeout,
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macaroons.IPLockChecker,
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)
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if err != nil {
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t.Fatalf("Error creating new service: %v", err)
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}
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defer service.Close()
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err = service.CreateUnlock(&defaultPw)
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if err != nil {
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t.Fatalf("Error unlocking root key storage: %v", err)
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}
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// Third, check if the created service can bake macaroons.
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_, err = service.NewMacaroon(context.TODO(), nil, testOperation)
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if err != macaroons.ErrMissingRootKeyID {
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t.Fatalf("Received %v instead of ErrMissingRootKeyID", err)
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}
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macaroon, err := service.NewMacaroon(
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context.TODO(), macaroons.DefaultRootKeyID, testOperation,
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)
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if err != nil {
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t.Fatalf("Error creating macaroon from service: %v", err)
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}
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if macaroon.Namespace().String() != "std:" {
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t.Fatalf("The created macaroon has an invalid namespace: %s",
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macaroon.Namespace().String())
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}
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// Finally, check if the service has been initialized correctly and
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// the checker has been added.
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var checkerFound = false
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checker := service.Checker.FirstPartyCaveatChecker.(*checkers.Checker)
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for _, info := range checker.Info() {
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if info.Name == "ipaddr" &&
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info.Prefix == "" &&
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info.Namespace == "std" {
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checkerFound = true
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}
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}
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if !checkerFound {
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t.Fatalf("Checker '%s' not found in service.", "ipaddr")
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}
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}
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// TestValidateMacaroon tests the validation of a macaroon that is in an
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// incoming context.
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func TestValidateMacaroon(t *testing.T) {
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// First, initialize the service and unlock it.
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tempDir := setupTestRootKeyStorage(t)
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defer os.RemoveAll(tempDir)
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service, err := macaroons.NewService(
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tempDir, "lnd", false, kvdb.DefaultDBTimeout,
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macaroons.IPLockChecker,
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)
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if err != nil {
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t.Fatalf("Error creating new service: %v", err)
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}
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defer service.Close()
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err = service.CreateUnlock(&defaultPw)
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if err != nil {
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t.Fatalf("Error unlocking root key storage: %v", err)
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}
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// Then, create a new macaroon that we can serialize.
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macaroon, err := service.NewMacaroon(
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context.TODO(), macaroons.DefaultRootKeyID, testOperation,
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testOperationURI,
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)
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if err != nil {
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t.Fatalf("Error creating macaroon from service: %v", err)
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}
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macaroonBinary, err := macaroon.M().MarshalBinary()
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if err != nil {
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t.Fatalf("Error serializing macaroon: %v", err)
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}
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// Because the macaroons are always passed in a context, we need to
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// mock one that has just the serialized macaroon as a value.
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md := metadata.New(map[string]string{
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"macaroon": hex.EncodeToString(macaroonBinary),
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})
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mockContext := metadata.NewIncomingContext(context.Background(), md)
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// Finally, validate the macaroon against the required permissions.
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err = service.ValidateMacaroon(
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mockContext, []bakery.Op{testOperation}, "FooMethod",
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)
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if err != nil {
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t.Fatalf("Error validating the macaroon: %v", err)
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}
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// If the macaroon has the method specific URI permission, the list of
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// required entity/action pairs is irrelevant.
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err = service.ValidateMacaroon(
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mockContext, []bakery.Op{{Entity: "irrelevant"}}, "SomeMethod",
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)
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if err != nil {
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t.Fatalf("Error validating the macaroon: %v", err)
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}
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}
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// TestListMacaroonIDs checks that ListMacaroonIDs returns the expected result.
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func TestListMacaroonIDs(t *testing.T) {
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// First, initialize a dummy DB file with a store that the service
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// can read from. Make sure the file is removed in the end.
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tempDir := setupTestRootKeyStorage(t)
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defer os.RemoveAll(tempDir)
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// Second, create the new service instance, unlock it and pass in a
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// checker that we expect it to add to the bakery.
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service, err := macaroons.NewService(
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tempDir, "lnd", false, kvdb.DefaultDBTimeout,
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macaroons.IPLockChecker,
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)
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require.NoError(t, err, "Error creating new service")
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defer service.Close()
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err = service.CreateUnlock(&defaultPw)
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require.NoError(t, err, "Error unlocking root key storage")
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// Third, make 3 new macaroons with different root key IDs.
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expectedIDs := [][]byte{{1}, {2}, {3}}
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for _, v := range expectedIDs {
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_, err := service.NewMacaroon(context.TODO(), v, testOperation)
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require.NoError(t, err, "Error creating macaroon from service")
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}
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// Finally, check that calling List return the expected values.
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ids, _ := service.ListMacaroonIDs(context.TODO())
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require.Equal(t, expectedIDs, ids, "root key IDs mismatch")
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}
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// TestDeleteMacaroonID removes the specific root key ID.
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func TestDeleteMacaroonID(t *testing.T) {
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ctxb := context.Background()
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// First, initialize a dummy DB file with a store that the service
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// can read from. Make sure the file is removed in the end.
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tempDir := setupTestRootKeyStorage(t)
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defer os.RemoveAll(tempDir)
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// Second, create the new service instance, unlock it and pass in a
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// checker that we expect it to add to the bakery.
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service, err := macaroons.NewService(
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tempDir, "lnd", false, kvdb.DefaultDBTimeout,
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macaroons.IPLockChecker,
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)
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require.NoError(t, err, "Error creating new service")
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defer service.Close()
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err = service.CreateUnlock(&defaultPw)
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require.NoError(t, err, "Error unlocking root key storage")
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// Third, checks that removing encryptedKeyID returns an error.
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encryptedKeyID := []byte("enckey")
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_, err = service.DeleteMacaroonID(ctxb, encryptedKeyID)
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require.Equal(t, macaroons.ErrDeletionForbidden, err)
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// Fourth, checks that removing DefaultKeyID returns an error.
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_, err = service.DeleteMacaroonID(ctxb, macaroons.DefaultRootKeyID)
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require.Equal(t, macaroons.ErrDeletionForbidden, err)
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// Fifth, checks that removing empty key id returns an error.
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_, err = service.DeleteMacaroonID(ctxb, []byte{})
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require.Equal(t, macaroons.ErrMissingRootKeyID, err)
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// Sixth, checks that removing a non-existed key id returns nil.
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nonExistedID := []byte("test-non-existed")
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deletedID, err := service.DeleteMacaroonID(ctxb, nonExistedID)
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require.NoError(t, err, "deleting macaroon ID got an error")
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require.Nil(t, deletedID, "deleting non-existed ID should return nil")
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// Seventh, make 3 new macaroons with different root key IDs, and delete
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// one.
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expectedIDs := [][]byte{{1}, {2}, {3}}
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for _, v := range expectedIDs {
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_, err := service.NewMacaroon(ctxb, v, testOperation)
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require.NoError(t, err, "Error creating macaroon from service")
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}
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deletedID, err = service.DeleteMacaroonID(ctxb, expectedIDs[0])
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require.NoError(t, err, "deleting macaroon ID got an error")
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// Finally, check that the ID is deleted.
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require.Equal(t, expectedIDs[0], deletedID, "expected ID to be removed")
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ids, _ := service.ListMacaroonIDs(ctxb)
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require.Equal(t, expectedIDs[1:], ids, "root key IDs mismatch")
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}
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