annotate mod_addressing/mod_addressing.lua @ 5298:12f7d8b901e0

mod_audit: Support for adding location (GeoIP) to audit events This can be more privacy-friendly than logging full IP addresses, and also more informative to a user - IP addresses don't mean much to the average person, however if they see activity from outside their expected country, they can immediately identify suspicious activity. As with IPs, this field is configurable for deployments that would like to disable it. Location is also not logged when the geoip library is not available.
author Matthew Wild <mwild1@gmail.com>
date Sat, 01 Apr 2023 13:11:53 +0100
parents f66a08f208ad
children
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1 -- TODO Querying other servers for support, needs to keep track of remote
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2 -- server disco features
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3
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4 local xmlns_address = 'http://jabber.org/protocol/address';
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5
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6 local function handle_extended_addressing(data)
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7 local stanza = data.stanza;
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8 if stanza.attr.type == "error" then
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9 return -- so we don't process bounces
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10 end
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11 local orig_to = stanza.attr.to;
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12 local addresses = stanza:get_child("addresses", xmlns_address);
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13 if addresses then
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14 module:log("debug", "Extended addressing found");
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15 local destinations = {};
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16 addresses:maptags(function(address)
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17 if address.attr.xmlns == xmlns_address and address.name == "address" then
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18 local type, jid, delivered = address.attr.type, address.attr.jid, address.attr.delivered;
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19 if (type == "cc" or type == "bcc" or type == "to")
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20 and jid and not delivered then
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21 destinations[#destinations+1] = jid;
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22 module:log("debug", "%s to %s", type, jid)
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23 if type == "to" or type == "cc" then
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24 address.attr.delivered = "true";
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25 return address;
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26 elseif type == "bcc" then
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27 return nil;
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28 end
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29 end
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30 end
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31 return address; -- unsupported stuff goes right back
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32 end);
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33 for i=1,#destinations do
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34 stanza.attr.to = destinations[i];
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35 module:log("debug", "posting stanza to %s", destinations[i])
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36 module:send(stanza);
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37 end
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38 stanza.attr.to = orig_to;
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39 return stanza.attr.to == module.host or nil;
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40 end
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41 end
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42
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43 module:hook("message/host", handle_extended_addressing, 10);
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44 module:hook("message/bare", handle_extended_addressing, 10);
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45 module:hook("message/full", handle_extended_addressing, 10);
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47 module:hook("presence/host", handle_extended_addressing, 10);
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48 module:hook("presence/bare", handle_extended_addressing, 10);
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49 module:hook("presence/full", handle_extended_addressing, 10);
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50
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51 -- IQ stanzas makes no sense
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52
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53 module:add_feature(xmlns_address);