prosody
9ba11ef91ce4
util/uuid.lua

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util/uuid.lua @ 13161:9ba11ef91ce4

mod_invites: Refactor argument handling using util.argparse This makes it so that --admin and --role are no longer mutually exclusive, they the former is simply treated as another --role. This was likely a leftover from when only a single role was possible. It does however become unclear which should be the primary, since the order is not preserved by argparse. Bonus: Loading of modules is avoided with only the --help is shown.
author Kim Alvefur <zash@zash.se>
date Wed, 12 Jan 2022 10:23:13 +0100
parent 12975:d10957394a3c
child 13317:e6a5f196fc1f
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 "prosody.util.random";
local random_bytes = random.bytes;
local hex = require "prosody.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;
};