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mod_muc: Better map restrict_room_creation to role permissions (behaviour change) With this change and 427dd01f0864, room creation is now effectively restricted to parent-host users by default. This is a better default than previous Prosody versions (where room creation was not restricted). The "local" option for restrict_room_creation is no longer used (any value other than true/false won't change the default behaviour). restrict_room_creation = true will grant prosody:admin the ability to create rooms. restrict_room_creation = false disables all permission checks. Anything between these two can be achieved using custom roles and permissions.

-- XEP-0307: Unique Room Names for Multi-User Chat
local st = require "util.stanza";
local unique_name = require "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);