prosody
d30c44a829c1
util/uuid.lua

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Software / code / prosody

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util/uuid.lua @ 11409:d30c44a829c1

net.http.server: Set request.ip so mod_http doesn't have to Because it already sets request.secure, which depends on the connection, just like the IP, so it makes sense to do both in the same place. Dealing with proxies can be left to mod_http for now, but maybe it could move into some util some day?
author Kim Alvefur <zash@zash.se>
date Sat, 27 Feb 2021 21:37:16 +0100
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;
};