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annotate mod_muc_access_control/mod_muc_access_control.lua @ 4409:44f6537f6427

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mod_invites_adhoc: Fail contact invite if user is not on current host Only the username was being used, and the host of the requester ignored. Luckily this only affects admins of the host. If they want to create an account they can use the other command. If they want to create a contact they should request from their account on this host.
author Matthew Wild <mwild1@gmail.com>
date Thu, 28 Jan 2021 07:04:11 +0000
parents f54c80404ad3
children
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1954
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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(unprepped_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 prepped_list[prepped_jid] = true;
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21 end
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22 end
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23 access_lists[prepped_room_name] = prepped_list;
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24 end
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25 end
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26
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27 local function is_restricted(room, who)
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28 local allowed = access_lists[room];
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29
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30 if allowed == nil or allowed[who] or allowed[select(2, jid.split(who))] then
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31 return nil;
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32 end
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33
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34 return "forbidden";
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35 end
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36
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37 module:hook("presence/full", function(event)
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38 local stanza = event.stanza;
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39
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40 if stanza.name == "presence" and stanza.attr.type == "unavailable" then -- Leaving events get discarded
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41 return;
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42 end
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43
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44 -- Get the room
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45 local room = jid.split(stanza.attr.to);
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46 if not room then return; end
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47
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48 -- Get who has tried to join it
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49 local who = jid.bare(stanza.attr.from)
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50
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51 -- Checking whether room is restricted
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52 local check_restricted = is_restricted(room, who)
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53 if check_restricted ~= nil then
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54 event.allowed = false;
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55 event.stanza.attr.type = 'error';
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56 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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57 end
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58 end, 10);