Mercurial > prosody-modules
annotate mod_muc_limits/mod_muc_limits.lua @ 828:855b28e10b39
Fix vCard checking routine to handle avatars properly
author | Rob Hoelz <rob@hoelz.ro> |
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date | Tue, 18 Sep 2012 00:14:31 +0200 |
parents | 14f39769c9e0 |
children | 09a5082a8162 |
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mod_muc_limits: New module to impose overall rate-limits on a MUC (not on individual users)
Matthew Wild <mwild1@gmail.com>
parents:
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1 |
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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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4 |
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5 local xmlns_muc = "http://jabber.org/protocol/muc"; |
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6 |
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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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9 |
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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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parents:
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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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44 |
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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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50 |
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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); |