annotate mod_register_dnsbl_firewall_mark/mod_register_dnsbl_firewall_mark.lua @ 4300:3f3b672b7616

mod_vcard_muc: Pass room object around instead of JID, hopefully fixing traceback More efficient to pass the object around instead of using the JID and looking up the object when needed. It seems in some (undetermined) cases get_room_from_jid(room.jid) is nil.
author Matthew Wild <mwild1@gmail.com>
date Tue, 15 Dec 2020 10:49:11 +0000
parents de40686ae9c8
children
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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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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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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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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);