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, 3 insertions, 6 deletions

diff --git a/lang/js/src/gpgmejs.js b/lang/js/src/gpgmejs.js
index 720490d6..9154979d 100644
--- a/lang/js/src/gpgmejs.js
+++ b/lang/js/src/gpgmejs.js
@@ -102,7 +102,7 @@ export class GpgME {
          */
         this.getKeyring = function(){
             if (!_Keyring){
-                _Keyring = new GPGME_Keyring;
+                _Keyring = Object.freeze(new GPGME_Keyring);
             }
             return _Keyring;
         };
@@ -241,7 +241,7 @@ export class GpgME {
             putData(msg, data);
             return new Promise(function(resolve,reject) {
                 if (mode ==='detached'){
-                    msg.expect= 'base64';
+                    msg.setExpect('base64');
                 }
                 msg.post().then( function(message) {
                     if (mode === 'clearsign'){
@@ -319,10 +319,7 @@ export class GpgME {
      * Accesses the {@link GPGME_Keyring}.
      */
     get Keyring(){
-        if (!this._Keyring){
-            this._Keyring = new GPGME_Keyring;
-        }
-        return this._Keyring;
+        return this.getKeyring();
     }
 }