fxa-login.js.diff

gistfile1.txt

diff --git a/static/js/common/fxa-login.js b/static/js/common/fxa-login.js
index 2f6428b..9ff32c4 100644
--- a/static/js/common/fxa-login.js
+++ b/static/js/common/fxa-login.js
@@ -32,13 +32,20 @@ function enableFxALogin() {
         });
     }

+    // utf-8 handling from https://mzl.la/1LwX2Zx
+    function utf8Tob64(str) {
+        return btoa(encodeURIComponent(str).replace(/%([0-9A-F]{2})/g, function(match, p1) {
+            return String.fromCharCode('0x' + p1);
+        }));
+    }
+
     function fxaLogin(opts) {
         opts = opts || {};
         var authConfig = {
             action:  'signin',
             client_id: config.clientId,
             email: opts.email || config.email,
-            state: config.state + ':' + urlsafe(btoa(nextPath())),
+            state: config.state + ':' + urlsafe(utf8Tob64(nextPath())),
             redirectUri: config.redirectUrl,
             scope: config.scope,
         };