prosody
a1c927323f06
util/uuid.lua

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util/uuid.lua @ 13273:a1c927323f06

mod_tokenauth: Delete grants without tokens after period Generally it is expected that a grant would have at least one token as long as the grant is in active use. Refresh tokens issued by mod_http_oauth2 have a lifetime of one week by default, so the idea here is that if that refresh token expired and another week goes by without the grant being used, then the whole grant can be removed.
author Kim Alvefur <zash@zash.se>
date Mon, 16 Oct 2023 23:51:52 +0200
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;
};