Clean up authenticator to properly report fields

authenticator-freeswitch-vmail.lua

--- Copy of authenticator-plaintext, plus added authentication from voicemail DB
+-- Authentication from voicemail DB
 local mymodule = {}
 
 authenticator = require("authenticator")
 md5 = require("md5")
 
+-- We will not list entries from the voicemail database, as you must use the freeswitch-vmail controller
+-- to list/view/edit entries. Similarly, we will not allow deletion. We will only allow reading single
+-- entries, as is done during authentication. These entries will be specified for table=authenticator.usertable
+-- and field="". Roles and home page are hardcoded below.
+
 mymodule.list_fields = function(self, tabl)
-	return nil
+	if tabl==authenticator.usertable then
+		return {""}
+	else
+		return {}
+	end
 end
 
+-- Do not list entries from vmail, must use vmail controller to view/edit
 mymodule.read_field = function(self, tabl, field)
-	return nil
+	return {}
 end
 
+-- We do not allow deletion
 mymodule.delete_field = function(self, tabl, field)
 	return false
 end
 
+-- We do not allow writing
 mymodule.write_entry = function(self, tabl, field, id, entry)
 	return false
 end
@@ -34,6 +46,7 @@ mymodule.read_entry = function(self, tabl, field, id)
 	return result
 end
 
+-- We do not allow deletion
 mymodule.delete_entry = function (self, tabl, field, id)
 	return false
 end