prosody
c601c834bf01
util/uuid.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

File

util/uuid.lua @ 8867:c601c834bf01

MUC: Add support for setting MUC room defaults from the config file Defaults are roughtly like this: muc_rooom_default_public = true muc_rooom_default_persistent = false muc_rooom_default_members_only = false muc_rooom_default_moderated = false muc_rooom_default_public_jids = false muc_rooom_default_change_subject = false muc_room_default_history_length = 20 muc_room_default_language = nil
author Kim Alvefur <zash@zash.se>
date Sun, 03 Jun 2018 14:43:06 +0200
parent 7078:ec17115e3721
child 12355:a0ff5c438e9d
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".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;
};