# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1450857603 -3600
# Node ID 77d838ba91c6b74ee7cea90e7f3775b042727354
# Parent  f0dc5cc11d0e033e65dcb1cba0fd1f28f08afc83
mod_register: Support for blacklisting ips that are still over limit when they get pushed out of the cache

diff -r f0dc5cc11d0e -r 77d838ba91c6 plugins/mod_register.lua
--- a/plugins/mod_register.lua	Wed Dec 23 08:58:34 2015 +0100
+++ b/plugins/mod_register.lua	Wed Dec 23 09:00:03 2015 +0100
@@ -180,8 +180,14 @@
 local throttle_max = module:get_option_number("registration_throttle_max", min_seconds_between_registrations and 1);
 local throttle_period = module:get_option_number("registration_throttle_period", min_seconds_between_registrations);
 local throttle_cache_size = module:get_option_number("registration_throttle_cache_size", 100);
+local blacklist_overflow = module_get_option_boolean("blacklist_on_registration_throttle_overload", false);
 
-local throttle_cache = new_cache(throttle_cache_size);
+local throttle_cache = new_cache(throttle_cache_size, blacklist_overflow and function (ip, throttle)
+	if not throttle:peek() then
+		module:log("info", "Adding ip %s to registration blacklist", ip);
+		blacklisted_ips[ip] = true;
+	end
+end);
 
 local function check_throttle(ip)
 	if not throttle_max then return true end