prosody
4be161c25e14
util/uuid.lua

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Software / code / prosody

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util/uuid.lua @ 12813:4be161c25e14

net.resolvers.service: Fix reporting of Bogus DNSSEC results The order of checks led to Bogus results being reported with a generic "unable to resolve service". This had no practical effects as such results are simply empty and the process would stop there. Tested by attempting to establish s2s with dnssec-bogus.sg and observing the error reply.
author Kim Alvefur <zash@zash.se>
date Wed, 21 Dec 2022 23:46:37 +0100
parent 12355:a0ff5c438e9d
child 12975:d10957394a3c
line wrap: on
line source

-- 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;
};