prosody
012d6e7b723a
util/uuid.lua

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util/uuid.lua @ 13027:012d6e7b723a

integration tests: Preserve unmocked time.monotonic() With monotonic() frozen, timers may fail to trigger. This caused problems after the new util.startup changes that moved the server-started event to a timer. The timer wouldn't trigger, the event didn't fire, and prosody would fail to daemonize. All the tests that depend on specific time behaviour are depending on wall clock time, so only mocking util.time.now() and os.time() fixes those.
author Matthew Wild <mwild1@gmail.com>
date Thu, 06 Apr 2023 14:00:54 +0100
parent 12975:d10957394a3c
child 13317:e6a5f196fc1f
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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;
};