js: Making objects inmutable

--

* An Object.freeze should stop any malicious third party from changing
  objects' methods once the objects are instantiated (see unittest for
  an approach that would have worked before)
  - An initialized gpgmejs- object doesn't have a '_Keyring' property
    anymore (it still has its 'Keyring')
  - The internal expect='base64' needed to be turned into a method.

1 files changed, 2 insertions, 2 deletions

diff --git a/lang/js/src/index.js b/lang/js/src/index.js
index dc613fc7..2fed95f9 100644
--- a/lang/js/src/index.js
+++ b/lang/js/src/index.js
@@ -34,11 +34,11 @@ import { Connection } from './Connection';
  */
 function init(){
     return new Promise(function(resolve, reject){
-        let connection = new Connection;
+        let connection = Object.freeze(new Connection);
         connection.checkConnection(false).then(
             function(result){
                 if (result === true) {
-                    resolve(new GpgME());
+                    resolve(Object.freeze(new GpgME()));
                 } else {
                     reject(gpgme_error('CONN_NO_CONNECT'));
                 }