From 7eaa39014d7934e8cc19001dc0da95095a73a632 Mon Sep 17 00:00:00 2001
From: spag <spag@golwen.net>
Date: Sun, 3 Feb 2013 18:32:55 +0100
Subject: old perimeter version removed

---
 misc/freeswitch/scripts/event/perimeter.lua | 107 ----------------------------
 1 file changed, 107 deletions(-)
 delete mode 100644 misc/freeswitch/scripts/event/perimeter.lua

(limited to 'misc/freeswitch/scripts/event/perimeter.lua')

diff --git a/misc/freeswitch/scripts/event/perimeter.lua b/misc/freeswitch/scripts/event/perimeter.lua
deleted file mode 100644
index 5bbb032..0000000
--- a/misc/freeswitch/scripts/event/perimeter.lua
+++ /dev/null
@@ -1,107 +0,0 @@
--- Gemeinschaft 5 module: cdr event handler class
--- (c) AMOOMA GmbH 2012-2013
--- 
-
-module(...,package.seeall)
-
-
-function handler_class()
-  return Perimeter
-end
-
-
-
-Perimeter = {}
-
-MALICIOUS_CONTACT_COUNT = 20;
-MALICIOUS_CONTACT_TIME_SPAN = 2;
-BAN_FUTILE = 2;
-
-function Perimeter.new(self, arg)
-  arg = arg or {}
-  object = arg.object or {}
-  setmetatable(object, self);
-  self.__index = self;
-  self.log = arg.log;
-  self.class = 'cdrsave'
-  self.database = arg.database;
-  self.domain = arg.domain;
-
-  self.ip_address_table = {}
-  self:init();
-
-  return object;
-end
-
-
-function Perimeter.event_handlers(self)
-  return { CUSTOM = { ['sofia::pre_register'] = self.sofia_pre_register } }
-end
-
-
-function Perimeter.init(self)
-  require 'common.configuration_table';
-  local config = common.configuration_table.get(self.database, 'perimeter');
-  if config and config.general then
-    self.malicious_contact_count = tonumber(config.general.malicious_contact_count) or MALICIOUS_CONTACT_COUNT;
-    self.malicious_contact_time_span = tonumber(config.general.malicious_contact_time_span) or MALICIOUS_CONTACT_TIME_SPAN;
-    self.ban_futile = tonumber(config.general.ban_futile) or BAN_FUTILE;
-    self.execute = config.general.execute;
-  end
-
-  self.log:info('[perimeter] PERIMETER - setup perimeter defense - config: ', self.malicious_contact_count, '/', self.malicious_contact_time_span, ', execute: ', self.execute);
-end
-
-
-function Perimeter.sofia_pre_register(self, event)
-  local ip_address = event:getHeader('network-ip');
-  self:check_ip(ip_address);
-end
-
-
-function Perimeter.check_ip(self, ip_address)
-  local event_time = os.time();
-
-  if not self.ip_address_table[ip_address] then
-    self.ip_address_table[ip_address] = { last_contact = event_time, contact_count = 0, start_stamp = event_time, banned = 0 }
-  end
-
-  local ip_record = self.ip_address_table[ip_address];
-  ip_record.last_contact = event_time;
-  ip_record.contact_count = ip_record.contact_count + 1;
-
-  if ip_record.contact_count > MALICIOUS_CONTACT_COUNT then
-    if (event_time - ip_record.start_stamp) <= MALICIOUS_CONTACT_TIME_SPAN then
-      self.log:warning('[', ip_address, '] PERIMETER - too many registration attempts');
-      ip_record.start_stamp = event_time;
-      ip_record.contact_count = 0;
-      if ip_record.banned < BAN_FUTILE then
-        ip_record.banned = ip_record.banned + 1;
-        self:ban_ip(ip_address);
-      else
-        self.log:error('[', ip_address, '] PERIMETER - ban futile');
-      end
-    end
-  end
-end
-
-
-function Perimeter.ban_ip(self, ip_address)
-  self.ip_address = ip_address;
-
-  if self.execute then
-    local command = self:expand_variables(self.execute);
-    self.log:debug('[', ip_address, '] PERIMETER - execute: ', command);
-    local result = os.execute(command);
-    if tostring(result) == '0' then
-      self.log:warning('[', ip_address, '] PERIMETER - IP banned');
-    end
-  end
-end
-
-
-function Perimeter.expand_variables(self, line)
-  return (line:gsub('{([%a%d_-]+)}', function(captured)
-    return self[captured];
-  end))
-end
-- 
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