File

+
−local st = require "util.stanza";
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−local jid = require "util.jid";
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−local nodeprep = require "util.encodings".stringprep.nodeprep;
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−
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−local unprepped_access_lists = module:get_option("muc_access_lists", {});
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−local access_lists = {};
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−
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−-- Make sure all input is prepped
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−for unprepped_room_name, unprepped_list in pairs(unprepped_access_lists) do
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−	local prepped_room_name = nodeprep(unprepped_room_name);
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−	if not prepped_room_name then
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−		module:log("error", "Invalid room name: %s", unprepped_room_name);
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−	else
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−		local prepped_list = {};
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−		for _, unprepped_jid in ipairs(unprepped_list) do
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−			local prepped_jid = jid.prep(unprepped_jid);
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−			if not prepped_jid then
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−				module:log("error", "Invalid JID: %s", unprepped_jid);
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−			else
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−				prepped_list[prepped_jid] = true;
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−			end
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−		end
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−		access_lists[prepped_room_name] = prepped_list;
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−	end
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−end
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−
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−local function is_restricted(room, who)
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−	local allowed = access_lists[room];
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−
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−	if allowed == nil or allowed[who] or allowed[select(2, jid.split(who))] then
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−		return nil;
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−	end
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−
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−	return "forbidden";
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−end
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−
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−module:hook("presence/full", function(event)
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−	local stanza = event.stanza;
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−
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−	if stanza.name == "presence" and stanza.attr.type == "unavailable" then   -- Leaving events get discarded
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−		return;
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−	end
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−
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−	-- Get the room
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−	local room = jid.split(stanza.attr.to);
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−        if not room then return; end
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−
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−	-- Get who has tried to join it
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−	local who = jid.bare(stanza.attr.from)
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−
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−	-- Checking whether room is restricted
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−	local check_restricted = is_restricted(room, who)
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−	if check_restricted ~= nil then
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−		event.allowed = false;
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−		event.stanza.attr.type = 'error';
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−		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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−	end
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−end, 10);