prosody-modules
3e0f4d727825
mod_muc_access_control/mod_muc_access_control.lua

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mod_muc_access_control/mod_muc_access_control.lua @ 3656:3e0f4d727825

mod_vcard_muc: Add an alternative method of signaling avatar change When the avatar has been changed, a signal is sent that the room configuration has changed. Clients then do a disco#info query to find the SHA-1 of the new avatar. They can then fetch it as before, or not if they have it cached already. This is meant to be less disruptive than signaling via presence, which caused problems for some clients. If clients transition to the new method, the old one can eventually be removed. The namespace is made up while waiting for standardization. Otherwise it is very close to what's described in https://xmpp.org/extensions/inbox/muc-avatars.html
author Kim Alvefur <zash@zash.se>
date Sun, 25 Aug 2019 20:46:43 +0200
parent 3024:f54c80404ad3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1954
050cd7b6fa96 mod_muc_access_control: Module to allow restricting rooms to a list of JIDs, which can include domains
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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);