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mod_register_dnsbl/mod_register_dnsbl.lua @ 2112:0890c4860f14

mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
author Kim Alvefur <zash@zash.se>
date Thu, 17 Mar 2016 13:05:38 +0100
child 2135:42b095dab626
comparison
equal deleted inserted replaced
2111:4e434abaf8fc 2112:0890c4860f14
1 local adns = require "net.adns";
2 local rbl = module:get_option_string("registration_rbl");
3
4 local function reverse(ip, suffix)
5 local a,b,c,d = ip:match("^(%d+%).(%d+%).(%d+%).(%d+%)$");
6 if not a then return end
7 return ("%d.%d.%d.%d.%s"):format(d,c,b,a, suffix);
8 end
9
10 -- TODO async
11 -- module:hook("user-registering", function (event) end);
12
13 module:hook("user-registered", function (event)
14 local session = event.session;
15 local ip = session and session.ip;
16 local rbl_ip = ip and reverse(ip, rbl);
17 if rbl_ip then
18 local log = session.log;
19 adns.lookup(function (reply)
20 if reply and reply[1] then
21 log("warn", "Registration from IP %s found in RBL", ip);
22 end
23 end, rbl_ip);
24 end
25 end);