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annotate mod_register_dnsbl_firewall_mark/mod_register_dnsbl_firewall_mark.lua @ 4596:c406e4bf7ee5

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mod_prometheus: Revert part of previous commit Accidentally added one too many of these asserts when adding to every module that used get_stats. This one does work with openmetrics already!
author Kim Alvefur <zash@zash.se>
date Sun, 20 Jun 2021 13:54:23 +0200
parents de40686ae9c8
children
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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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1 local adns = require "net.adns";
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2 local rbl = module:get_option_string("registration_rbl");
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3 local rbl_message = module:get_option_string("registration_rbl_message");
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4 local st = require "util.stanza";
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6
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7 local function cleanup_ip(ip)
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8 if ip:sub(1,7):lower() == "::ffff:" then
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9 return ip:sub(8);
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10 end
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11 return ip;
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12 end
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14 local function reverse(ip, suffix)
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42b095dab626 mod_register_dnsbl: Fix matching pattern (Thanks Ge0rG)
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15 local a,b,c,d = ip:match("^(%d+).(%d+).(%d+).(%d+)$");
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16 if not a then return end
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17 return ("%d.%d.%d.%d.%s"):format(d,c,b,a, suffix);
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18 end
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20 module:hook("user-registered", function (event)
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21 local session = event.session;
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22 local ip = session and session.ip and cleanup_ip(session.ip);
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23 local rbl_ip = ip and reverse(ip, rbl);
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24 if rbl_ip then
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589cc51209f7 mod_register_dnsbl_firewall_mark: Another copy of DNSBL module, this time creating "user marks" for mod_firewall
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25 local registration_time = os.time();
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26 local log = session.log;
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27 adns.lookup(function (reply)
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28 if reply and reply[1] then
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2dcc3079572c mod_register_dnsbl: Include more information in log message
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29 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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30 local user = prosody.bare_sessions[event.username .. "@" .. module.host];
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31 if user and user.firewall_marks then
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32 user.firewall_marks.dnsbl_hit = registration_time;
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33 else
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34 module:open_store("firewall_marks", "map"):set(event.username, "dnsbl_hit", registration_time);
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35 end
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36 if rbl_message then
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37 module:log("debug", "Warning RBL registered user %s@%s", event.username, event.host);
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38 event.ip = ip;
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39 local rbl_stanza =
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40 st.message({ to = event.username.."@"..event.host, from = event.host },
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41 rbl_message:gsub("$(%w+)", event));
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42 module:send(rbl_stanza);
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43 end
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44 end
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45 end, rbl_ip);
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46 end
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47 end);