prosody-modules
050cd7b6fa96
mod_muc_access_control/mod_muc_access_control.lua

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mod_muc_access_control/mod_muc_access_control.lua @ 1954:050cd7b6fa96

mod_muc_access_control: Module to allow restricting rooms to a list of JIDs, which can include domains
author Matthew Wild <mwild1@gmail.com>
date Sun, 22 Nov 2015 19:33:09 +0000
child 3024:f54c80404ad3
comparison
equal deleted inserted replaced
1953:0c3ba5ff7a3b 1954:050cd7b6fa96
1 local st = require "util.stanza";
2 local jid = require "util.jid";
3 local nodeprep = require "util.encodings".stringprep.nodeprep;
4
5 local unprepped_access_lists = module:get_option("muc_access_lists", {});
6 local access_lists = {};
7
8 -- Make sure all input is prepped
9 for unprepped_room_name, unprepped_list in pairs(unprepped_access_lists) do
10 local prepped_room_name = nodeprep(unprepped_room_name);
11 if not prepped_room_name then
12 module:log("error", "Invalid room name: %s", unprepped_room_name);
13 else
14 local prepped_list = {};
15 for _, unprepped_jid in ipairs(unprepped_list) do
16 local prepped_jid = jid.prep(jid);
17 if not prepped_jid then
18 module:log("error", "Invalid JID: %s", unprepped_jid);
19 else
20 table.insert(prepped_list, jid.pep(jid));
21 end
22 end
23 end
24 end
25
26 local function is_restricted(room, who)
27 local allowed = access_lists[room];
28
29 if allowed == nil or allowed[who] or allowed[select(2, jid.split(who))] then
30 return nil;
31 end
32
33 return "forbidden";
34 end
35
36 module:hook("presence/full", function(event)
37 local stanza = event.stanza;
38
39 if stanza.name == "presence" and stanza.attr.type == "unavailable" then -- Leaving events get discarded
40 return;
41 end
42
43 -- Get the room
44 local room = jid.split(stanza.attr.to);
45 if not room then return; end
46
47 -- Get who has tried to join it
48 local who = jid.bare(stanza.attr.from)
49
50 -- Checking whether room is restricted
51 local check_restricted = is_restricted(room, who)
52 if check_restricted ~= nil then
53 event.allowed = false;
54 event.stanza.attr.type = 'error';
55 return event.origin.send(st.error_reply(event.stanza, "cancel", "forbidden", "You're not allowed to enter this room: " .. check_restricted));
56 end
57 end, 10);