prosody
a314f5bff9f0
util/uuid.lua

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Software / code / prosody

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util/uuid.lua @ 12731:a314f5bff9f0

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.
author Matthew Wild <mwild1@gmail.com>
date Thu, 29 Sep 2022 12:30:52 +0100
parent 12355:a0ff5c438e9d
child 12975:d10957394a3c
line wrap: on
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-- Prosody IM
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--

local random = require "util.random";
local random_bytes = random.bytes;
local hex = require "util.hex".encode;
local m_ceil = math.ceil;

local function get_nibbles(n)
	return hex(random_bytes(m_ceil(n/2))):sub(1, n);
end

local function get_twobits()
	return ("%x"):format(random_bytes(1):byte() % 4 + 8);
end

local function generate()
	-- generate RFC 4122 complaint UUIDs (version 4 - random)
	return get_nibbles(8).."-"..get_nibbles(4).."-4"..get_nibbles(3).."-"..(get_twobits())..get_nibbles(3).."-"..get_nibbles(12);
end

return {
	get_nibbles=get_nibbles;
	generate = generate ;
	-- COMPAT
	seed = random.seed;
};