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annotate mod_muc_access_control/mod_muc_access_control.lua @ 2494:d300ae5dba87

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mod_smacks: Fix some bugs with smacks-ack-delayed event triggering. The old code had several flaws which are addressed here. First of all this fixes the if statement guarding the event generation There where some timing glitches addressed by this commit as well.
author tmolitor <thilo@eightysoft.de>
date Sun, 12 Feb 2017 21:23:22 +0100
parents 050cd7b6fa96
children f54c80404ad3
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1 local st = require "util.stanza";
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2 local jid = require "util.jid";
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3 local nodeprep = require "util.encodings".stringprep.nodeprep;
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4
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5 local unprepped_access_lists = module:get_option("muc_access_lists", {});
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6 local access_lists = {};
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7
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8 -- Make sure all input is prepped
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9 for unprepped_room_name, unprepped_list in pairs(unprepped_access_lists) do
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10 local prepped_room_name = nodeprep(unprepped_room_name);
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11 if not prepped_room_name then
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12 module:log("error", "Invalid room name: %s", unprepped_room_name);
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13 else
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14 local prepped_list = {};
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15 for _, unprepped_jid in ipairs(unprepped_list) do
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16 local prepped_jid = jid.prep(jid);
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17 if not prepped_jid then
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18 module:log("error", "Invalid JID: %s", unprepped_jid);
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19 else
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20 table.insert(prepped_list, jid.pep(jid));
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21 end
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22 end
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23 end
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24 end
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25
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26 local function is_restricted(room, who)
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27 local allowed = access_lists[room];
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28
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29 if allowed == nil or allowed[who] or allowed[select(2, jid.split(who))] then
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30 return nil;
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31 end
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32
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33 return "forbidden";
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34 end
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35
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36 module:hook("presence/full", function(event)
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37 local stanza = event.stanza;
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38
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39 if stanza.name == "presence" and stanza.attr.type == "unavailable" then -- Leaving events get discarded
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40 return;
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41 end
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42
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43 -- Get the room
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44 local room = jid.split(stanza.attr.to);
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45 if not room then return; end
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46
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47 -- Get who has tried to join it
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48 local who = jid.bare(stanza.attr.from)
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49
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50 -- Checking whether room is restricted
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51 local check_restricted = is_restricted(room, who)
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52 if check_restricted ~= nil then
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53 event.allowed = false;
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54 event.stanza.attr.type = 'error';
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55 return event.origin.send(st.error_reply(event.stanza, "cancel", "forbidden", "You're not allowed to enter this room: " .. check_restricted));
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56 end
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57 end, 10);