view mod_muc_restrict_rooms/mod_muc_restrict_rooms.lua @ 4980:da151f9af861

replaced 'session' with 'origin' in push_disable session is not defined in this function, trying to access it leads to an error. The correct reference seems to be 'origin'. (This may have come about by copying from the similar code in process_stanza_queue.)
author arcseconds
date Sat, 30 Jul 2022 21:07:47 +1200
parents 79adec50b24d
children
line wrap: on
line source

local st = require "util.stanza";
local jid = require "util.jid";
local nodeprep = require "util.encodings".stringprep.nodeprep;

local rooms = module:shared "muc/rooms";
if not rooms then
        module:log("error", "This module only works on MUC components!");
        return;
end

local restrict_patterns = module:get_option("muc_restrict_matching", {});
local restrict_excepts = module:get_option_set("muc_restrict_exceptions", {});
local restrict_allow_admins = module:get_option_boolean("muc_restrict_allow_admins", false);

local function is_restricted(room, who)
	-- If admins can join prohibited rooms, we allow them to
	if restrict_allow_admins and usermanager.is_admin(who, module.host) then
		module:log("debug", "Admins are allowed to enter restricted rooms (%s on %s)", who, room)
		return nil;
	end

	-- Don't evaluate exceptions
	if restrict_excepts:contains(room) then
		module:log("debug", "Room %s is amongst restriction exceptions", room())
		return nil;
	end

	-- Evaluate regexps of restricted patterns
        for pattern,reason in pairs(restrict_patterns) do
                if room:match(pattern) then
			module:log("debug", "Room %s is restricted by pattern %s, user %s is not allowed to join (%s)", room, pattern, who, reason)
                        return reason;
                end
        end

	return nil
end

module:hook("presence/full", function(event)
        local stanza = event.stanza;

        if stanza.name == "presence" and stanza.attr.type == "unavailable" then   -- Leaving events get discarded
                return;
        end

	-- Get the room
	local room = jid.split(stanza.attr.to);
        if not room then return; end

	-- Get who has tried to join it
	local who = jid.bare(stanza.attr.from)

	-- Checking whether room is restricted
	local check_restricted = is_restricted(room, who)
        if check_restricted ~= nil then
                event.allowed = false;
                event.stanza.attr.type = 'error';
	        return event.origin.send(st.error_reply(event.stanza, "cancel", "forbidden", "You're not allowed to enter this room: " .. check_restricted));
        end
end, 10);