prosody-modules
e4ea03b060ed
mod_muc_limits/mod_muc_limits.lua

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mod_muc_limits/mod_muc_limits.lua @ 737:e4ea03b060ed

mod_archive: switch from/to The XEP-0136 is not very explicit about the meening of <from> and <to> elements, but the examples are clear: <from> means it comes from the user in the 'with' attribute of the collection. That is the opposite of what is currently implemented in that module. So for better compatibility with complient clients, this switch the 'from' and 'to' fields
author Olivier Goffart <ogoffart@woboq.com>
date Wed, 04 Jul 2012 14:08:43 +0200
parent 557:14f39769c9e0
child 1035:09a5082a8162
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2 local st = require "util.stanza";
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3 local new_throttle = require "util.throttle".create;
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5 local xmlns_muc = "http://jabber.org/protocol/muc";
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7 local period = math.max(module:get_option_number("muc_event_rate", 0.5), 0);
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8 local burst = math.max(module:get_option_number("muc_burst_factor", 6), 1);
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10 local function handle_stanza(event)
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11 local origin, stanza = event.origin, event.stanza;
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12 if stanza.name == "presence" and stanza.attr.type == "unavailable" then -- Don't limit room leaving
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13 return;
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14 end
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15 local dest_room, dest_host, dest_nick = jid.split(stanza.attr.to);
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16 local room = hosts[module.host].modules.muc.rooms[dest_room.."@"..dest_host];
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17 if not room then return; end
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18 local from_jid = stanza.attr.from;
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19 local occupant = room._occupants[room._jid_nick[from_jid]];
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20 if occupant and occupant.affiliation then
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21 module:log("debug", "Skipping stanza from affiliated user...");
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22 return;
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23 end
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24 local throttle = room.throttle;
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25 if not room.throttle then
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26 throttle = new_throttle(period*burst, burst);
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27 room.throttle = throttle;
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28 end
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29 if not throttle:poll(1) then
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30 module:log("warn", "Dropping stanza for %s@%s from %s, over rate limit", dest_room, dest_host, from_jid);
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31 local reply = st.error_reply(stanza, "wait", "policy-violation", "The room is currently overactive, please try again later");
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32 local body = stanza:get_child_text("body");
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33 if body then
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34 reply:up():tag("body"):text(body):up();
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35 end
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36 local x = stanza:get_child("x", xmlns_muc);
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37 if x then
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38 reply:add_child(st.clone(x));
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39 end
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40 origin.send(reply);
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41 return true;
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42 end
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43 end
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45 function module.unload()
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46 for room_jid, room in pairs(hosts[module.host].modules.muc.rooms) do
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47 room.throttle = nil;
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48 end
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49 end
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51 module:hook("message/bare", handle_stanza, 10);
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52 module:hook("message/full", handle_stanza, 10);
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53 module:hook("presence/bare", handle_stanza, 10);
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54 module:hook("presence/full", handle_stanza, 10);