Fix user registration validation to ensure valid data before creating…

… user

mslib/mscolab/server.py

@@ -154,7 +154,8 @@ def check_login(emailid, password):
 
 
 def register_user(email, password, username):
-    user = User(email, username, password)
+    if len(str(email.strip())) == 0 or len(str(username.strip())) == 0:
+        return {"success": False, "message": "Your username or email cannot be empty"}
     is_valid_username = True if username.find("@") == -1 else False
     is_valid_email = validate_email(email)
     if not is_valid_email:
@@ -167,6 +168,7 @@ def register_user(email, password, username):
     user_exists = User.query.filter_by(username=str(username)).first()
     if user_exists:
         return {"success": False, "message": "This username is already registered"}
+    user = User(email, username, password)
     result = fm.modify_user(user, action="create")
     return {"success": result}