lnd.xprv/macaroons/service_test.go

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package macaroons_test
import (
"context"
"encoding/hex"
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"io/ioutil"
"os"
"path"
"testing"
"github.com/coreos/bbolt"
"github.com/lightningnetwork/lnd/macaroons"
"google.golang.org/grpc/metadata"
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"gopkg.in/macaroon-bakery.v2/bakery"
"gopkg.in/macaroon-bakery.v2/bakery/checkers"
)
var (
testOperation = bakery.Op{
Entity: "testEntity",
Action: "read",
}
defaultPw = []byte("hello")
)
// setupTestRootKeyStorage creates a dummy root key storage by
// creating a temporary macaroons.db and initializing it with the
// default password of 'hello'. Only the path to the temporary
// DB file is returned, because the service will open the file
// and read the store on its own.
func setupTestRootKeyStorage(t *testing.T) string {
tempDir, err := ioutil.TempDir("", "macaroonstore-")
if err != nil {
t.Fatalf("Error creating temp dir: %v", err)
}
db, err := bbolt.Open(path.Join(tempDir, "macaroons.db"), 0600,
bbolt.DefaultOptions)
if err != nil {
t.Fatalf("Error opening store DB: %v", err)
}
store, err := macaroons.NewRootKeyStorage(db)
if err != nil {
db.Close()
t.Fatalf("Error creating root key store: %v", err)
}
defer store.Close()
err = store.CreateUnlock(&defaultPw)
return tempDir
}
// TestNewService tests the creation of the macaroon service.
func TestNewService(t *testing.T) {
// First, initialize a dummy DB file with a store that the service
// can read from. Make sure the file is removed in the end.
tempDir := setupTestRootKeyStorage(t)
defer os.RemoveAll(tempDir)
// Second, create the new service instance, unlock it and pass in a
// checker that we expect it to add to the bakery.
service, err := macaroons.NewService(tempDir, macaroons.IPLockChecker)
defer service.Close()
if err != nil {
t.Fatalf("Error creating new service: %v", err)
}
err = service.CreateUnlock(&defaultPw)
if err != nil {
t.Fatalf("Error unlocking root key storage: %v", err)
}
// Third, check if the created service can bake macaroons.
macaroon, err := service.Oven.NewMacaroon(nil, bakery.LatestVersion,
nil, testOperation)
if err != nil {
t.Fatalf("Error creating macaroon from service: %v", err)
}
if macaroon.Namespace().String() != "std:" {
t.Fatalf("The created macaroon has an invalid namespace: %s",
macaroon.Namespace().String())
}
// Finally, check if the service has been initialized correctly and
// the checker has been added.
var checkerFound = false
checker := service.Checker.FirstPartyCaveatChecker.(*checkers.Checker)
for _, info := range checker.Info() {
if info.Name == "ipaddr" &&
info.Prefix == "" &&
info.Namespace == "std" {
checkerFound = true
}
}
if !checkerFound {
t.Fatalf("Checker '%s' not found in service.", "ipaddr")
}
}
// TestValidateMacaroon tests the validation of a macaroon that is in an
// incoming context.
func TestValidateMacaroon(t *testing.T) {
// First, initialize the service and unlock it.
tempDir := setupTestRootKeyStorage(t)
defer os.RemoveAll(tempDir)
service, err := macaroons.NewService(tempDir, macaroons.IPLockChecker)
defer service.Close()
if err != nil {
t.Fatalf("Error creating new service: %v", err)
}
err = service.CreateUnlock(&defaultPw)
if err != nil {
t.Fatalf("Error unlocking root key storage: %v", err)
}
// Then, create a new macaroon that we can serialize.
macaroon, err := service.Oven.NewMacaroon(nil, bakery.LatestVersion,
nil, testOperation)
if err != nil {
t.Fatalf("Error creating macaroon from service: %v", err)
}
macaroonBinary, err := macaroon.M().MarshalBinary()
if err != nil {
t.Fatalf("Error serializing macaroon: %v", err)
}
// Because the macaroons are always passed in a context, we need to
// mock one that has just the serialized macaroon as a value.
md := metadata.New(map[string]string{
"macaroon": hex.EncodeToString(macaroonBinary),
})
mockContext := metadata.NewIncomingContext(context.Background(), md)
// Finally, validate the macaroon against the required permissions.
err = service.ValidateMacaroon(mockContext, []bakery.Op{testOperation})
if err != nil {
t.Fatalf("Error validating the macaroon: %v", err)
}
}