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view plugins/mod_muc_unique.lua @ 14140:c9c4a13732e4 13.0

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util.multitable: Don't treat false as a missing key 'if not next(some_table)' is a tempting pattern to check whether a table is empty, but we have had multiple bugs in the past where a literal `false` was present as a key, incorrectly matching this test. The correct test is to test for nil, which cannot ever be a key, and means the table is legitimately empty.
author Matthew Wild <mwild1@gmail.com>
date Fri, 17 Apr 2026 17:45:31 +0100
parents 74b9e05af71e
children
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-- XEP-0307: Unique Room Names for Multi-User Chat
local st = require "prosody.util.stanza";
local unique_name = require "prosody.util.id".medium;
module:add_feature "http://jabber.org/protocol/muc#unique"
module:hook("iq-get/host/http://jabber.org/protocol/muc#unique:unique", function(event)
	local origin, stanza = event.origin, event.stanza;
	origin.send(st.reply(stanza)
		:tag("unique", {xmlns = "http://jabber.org/protocol/muc#unique"})
		:text(unique_name():lower())
	);
	return true;
end,-1);