prosody
16b47c3b44f3
util/uuid.lua

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Software / code / prosody

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util/uuid.lua @ 13011:16b47c3b44f3

mod_invites_register: Allow roles to be an ordered list, first being primary Part of an update to mod_invites and friends to the new authz and roles. Invites with roles in the old way will need to be migrated, but with invites often being short lived it is probably not a long-lived problem.
author Kim Alvefur <zash@zash.se>
date Thu, 30 Mar 2023 11:05:40 +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;
};