Mercurial > prosody-modules

annotate mod_muc_restrict_rooms/mod_muc_restrict_rooms.lua @ 5160:8474a3b80200

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mod_firewall: Fix 'is_admin' internal dependency rule #1797 (thanks diane) Looks like the boolean logic was inverted here. Instead, for now, simply check if is_admin is there. It is deprecated in trunk and was briefly removed before being brought back with a 'deprecated' warning as part of the new roles and permissions work. Making this dependency conditioned on the existence of the underlying function should make it work until it actually goes away for real.
author Kim Alvefur <zash@zash.se>
date Fri, 27 Jan 2023 23:06:25 +0100
parents 79adec50b24d
children
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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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5 local rooms = module:shared "muc/rooms";
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6 if not rooms then
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7 module:log("error", "This module only works on MUC components!");
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8 return;
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9 end
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11 local restrict_patterns = module:get_option("muc_restrict_matching", {});
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12 local restrict_excepts = module:get_option_set("muc_restrict_exceptions", {});
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13 local restrict_allow_admins = module:get_option_boolean("muc_restrict_allow_admins", false);
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15 local function is_restricted(room, who)
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16 -- If admins can join prohibited rooms, we allow them to
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17 if restrict_allow_admins and usermanager.is_admin(who, module.host) then
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18 module:log("debug", "Admins are allowed to enter restricted rooms (%s on %s)", who, room)
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19 return nil;
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20 end
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22 -- Don't evaluate exceptions
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23 if restrict_excepts:contains(room) then
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24 module:log("debug", "Room %s is amongst restriction exceptions", room())
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25 return nil;
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26 end
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28 -- Evaluate regexps of restricted patterns
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29 for pattern,reason in pairs(restrict_patterns) do
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30 if room:match(pattern) then
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31 module:log("debug", "Room %s is restricted by pattern %s, user %s is not allowed to join (%s)", room, pattern, who, reason)
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32 return reason;
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33 end
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34 end
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35
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36 return nil
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37 end
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39 module:hook("presence/full", function(event)
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40 local stanza = event.stanza;
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42 if stanza.name == "presence" and stanza.attr.type == "unavailable" then -- Leaving events get discarded
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43 return;
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44 end
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46 -- Get the room
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47 local room = jid.split(stanza.attr.to);
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48 if not room then return; end
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49
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50 -- Get who has tried to join it
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51 local who = jid.bare(stanza.attr.from)
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52
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53 -- Checking whether room is restricted
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54 local check_restricted = is_restricted(room, who)
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55 if check_restricted ~= nil then
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56 event.allowed = false;
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57 event.stanza.attr.type = 'error';
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58 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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59 end
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60 end, 10);