Add tracking if database is encrypted and return an error if loading the wrong type of database

indexedDb/init.go

@@ -10,7 +10,9 @@
 package indexedDb
 
 import (
+	"github.com/pkg/errors"
 	cryptoChannel "gitlab.com/elixxir/crypto/channel"
+	"gitlab.com/elixxir/xxdk-wasm/utils"
 	"syscall/js"
 
 	"github.com/hack-pad/go-indexeddb/idb"
@@ -89,7 +91,17 @@ func newWASMModel(databaseName string, encryption cryptoChannel.Cipher,
 	// Wait for database open to finish
 	db, err := openRequest.Await(ctx)
 
-	if encryption == nil {
+	encryptionStatus := encryption != nil
+	loadedEncryptionStatus, err := utils.StoreIndexedDbEncryptionStatus(
+		databaseName, encryptionStatus)
+	if err != nil {
+		return nil, err
+	}
+
+	if encryptionStatus != loadedEncryptionStatus {
+		return nil, errors.New(
+			"Cannot load database with different encryption status.")
+	} else if !encryptionStatus {
 		jww.WARN.Printf("IndexedDb encryption disabled!")
 	}
 	return &wasmModel{db: db, receivedMessageCB: cb, cipher: encryption}, err

utils/indexedDbEncryptionTrack.go

+////////////////////////////////////////////////////////////////////////////////
+// Copyright © 2022 xx foundation                                             //
+//                                                                            //
+// Use of this source code is governed by a license that can be found in the  //
+// LICENSE file.                                                              //
+////////////////////////////////////////////////////////////////////////////////
+
+package utils
+
+import (
+	"github.com/pkg/errors"
+	"os"
+)
+
+// Key to store if the database is encrypted or not
+const databaseEncryptionToggleKey = "xxdkWasmDatabaseEncryptionToggle/"
+
+// StoreIndexedDbEncryptionStatus stores the encryption status if it has not
+// been previously saved. If it has, it returns its value.
+func StoreIndexedDbEncryptionStatus(
+	databaseName string, encryption bool) (bool, error) {
+	data, err := GetLocalStorage().GetItem(
+		databaseEncryptionToggleKey + databaseName)
+	if err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			GetLocalStorage().SetItem(
+				databaseEncryptionToggleKey+databaseName, []byte{1})
+			return encryption, nil
+		} else {
+			return false, err
+		}
+	}
+
+	return data[0] == 1, nil
+}