Add caminus username validation api

api/handlers.py

@@ -0,0 +1,14 @@
+from piston.handler import AnonymousBaseHandler
+from profiles.models import MinecraftProfile
+
+class WhitelistHandler(AnonymousBaseHandler):
+    allowed_methods = ('GET',)
+
+    def read(self, request, username=None):
+        if username:
+            try:
+                profile = MinecraftProfile.objects.get(mc_username__exact=username)
+            except Exception, e:
+                return False
+            return profile.user.is_active
+        return False