annotate mod_register_dnsbl_warn/mod_register_dnsbl_warn.lua @ 5243:d5dc8edb2695

mod_http_oauth2: Use more compact IDs UUIDs are nice but so verbose! The reduction in entropy for the nonce should be fine since the timestamp is also counts towards this, and it changes every second (modulo clock shenanigans), so the chances of someone managing to get the same client_secret by registering with the same information at the same time as another entity should be negligible.
author Kim Alvefur <zash@zash.se>
date Sat, 11 Mar 2023 22:46:27 +0100
parents 76036fa34055
children
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0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
Kim Alvefur <zash@zash.se>
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1 local adns = require "net.adns";
0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
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2 local rbl = module:get_option_string("registration_rbl");
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3
0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
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4 local function reverse(ip, suffix)
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76036fa34055 mod_register_dnsbl_*: fix DS legacy ipv4 addresses, thx Zash
Georg Lukas <georg@op-co.de>
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5 if ip:sub(1,7):lower() == "::ffff:" then
76036fa34055 mod_register_dnsbl_*: fix DS legacy ipv4 addresses, thx Zash
Georg Lukas <georg@op-co.de>
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6 ip = ip:sub(8);
76036fa34055 mod_register_dnsbl_*: fix DS legacy ipv4 addresses, thx Zash
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7 end
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42b095dab626 mod_register_dnsbl: Fix matching pattern (Thanks Ge0rG)
Kim Alvefur <zash@zash.se>
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8 local a,b,c,d = ip:match("^(%d+).(%d+).(%d+).(%d+)$");
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0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
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9 if not a then return end
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10 return ("%d.%d.%d.%d.%s"):format(d,c,b,a, suffix);
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11 end
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0890c4860f14 mod_register_dnsbl: Initial commit of module to check users registering against an DNS block list
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13 -- TODO async
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14 -- module:hook("user-registering", function (event) end);
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15
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16 module:hook("user-registered", function (event)
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17 local session = event.session;
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18 local ip = session and session.ip;
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19 local rbl_ip = ip and reverse(ip, rbl);
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20 if rbl_ip then
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21 local log = session.log;
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22 adns.lookup(function (reply)
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23 if reply and reply[1] then
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2dcc3079572c mod_register_dnsbl: Include more information in log message
Kim Alvefur <zash@zash.se>
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24 log("warn", "Account %s@%s registered from IP %s found in RBL (%s)", event.username, event.host or module.host, ip, reply[1].a);
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25 end
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26 end, rbl_ip);
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27 end
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28 end);