js: decode arriving gpg message strings

--

* Arriving strings (i.e. user id names, error messages) are not
  always in javascript encoding. This is an attempt to go through
  the whole gpgme answer (with the exception of payload data) and
  to fix the encoding of these

2 files changed, 30 insertions, 2 deletions

diff --git a/lang/js/src/Connection.js b/lang/js/src/Connection.js
index b0105757..8d381f15 100644
--- a/lang/js/src/Connection.js
+++ b/lang/js/src/Connection.js
@@ -26,6 +26,7 @@
 import { permittedOperations } from './permittedOperations';
 import { gpgme_error } from './Errors';
 import { GPGME_Message, createMessage } from './Message';
+import { decode } from './Helpers';
 
 /**
  * A Connection handles the nativeMessaging interaction via a port. As the
@@ -239,7 +240,7 @@ class Answer{
                 case 'type':
                     if (_decodedResponse.type === 'error'){
                         return (gpgme_error('GNUPG_ERROR',
-                            decodeURIComponent(escape(_decodedResponse.msg))));
+                            decode(_decodedResponse.msg)));
                     } else if (poa.type.indexOf(_decodedResponse.type) < 0){
                         return gpgme_error('CONN_UNEXPECTED_ANSWER');
                     }
@@ -270,7 +271,7 @@ class Answer{
                                 ('00' + c.charCodeAt(0).toString(16)).slice(-2);
                                 }).join(''));
                     } else {
-                        _response[key] = _decodedResponse[key];
+                        _response[key] = decode(_decodedResponse[key]);
                     }
                     break;
                 }
diff --git a/lang/js/src/Helpers.js b/lang/js/src/Helpers.js
index accc2af5..379015f2 100644
--- a/lang/js/src/Helpers.js
+++ b/lang/js/src/Helpers.js
@@ -108,3 +108,30 @@ export function isFingerprint(value){
 export function isLongId(value){
     return hextest(value, 16);
 }
+
+/**
+ * Recursively decodes input (utf8) to output (utf-16; javascript) strings
+ * @param {Object | Array | String} property
+ */
+export function decode(property){
+    if (typeof property === 'string'){
+        return decodeURIComponent(escape(property));
+    } else if (Array.isArray(property)){
+        let res = [];
+        for (let arr=0; arr < property.length; arr++){
+            res.push(decode(property[arr]));
+        }
+        return res;
+    } else if (typeof property === 'object'){
+        const keys = Object.keys(property);
+        if (keys.length){
+            let res = {};
+            for (let k=0; k < keys.length; k++ ){
+                res[keys[k]] = decode(property[keys[k]]);
+            }
+            return res;
+        }
+        return property;
+    }
+    return property;
+}
\ No newline at end of file