prosody
7843f1ca3b33
util/uuid.lua

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Software / code / prosody

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util/uuid.lua @ 11682:7843f1ca3b33

mod_s2s: Vary log level by remote stream error Increases log level for stream conditions that could indicate a problem on our end, especially programming errors like invalid XML, or the remote server saying that our certificate is invalid, since these should be investigated. Non-issues like closing of idle streams are lowered to debug since it's mostly noise. Other issues left at info are mostly about changes to the remote server, e.g. complete or partial shutdown.
author Kim Alvefur <zash@zash.se>
date Wed, 14 Jul 2021 02:41:15 +0200
parent 7078:ec17115e3721
child 12355:a0ff5c438e9d
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".to;
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;
};