prosody
b2dd1219a321
util/id.lua

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util/id.lua @ 10473:b2dd1219a321

mod_s2s: Improve TLS handshake error messages This should make it clearer that it's about the TLS handshake. Otherwise it's something like "unsupported protocol" or "no shared ciphers" that might not be that obvious.
author Kim Alvefur <zash@zash.se>
date Sun, 01 Dec 2019 01:20:34 +0100
parent 8016:9546c629289b
child 12110:b5b799a2a10c
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-- Prosody IM
-- Copyright (C) 2008-2017 Matthew Wild
-- Copyright (C) 2008-2017 Waqas Hussain
-- Copyright (C) 2008-2017 Kim Alvefur
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--

local s_gsub = string.gsub;
local random_bytes = require "util.random".bytes;
local base64_encode = require "util.encodings".base64.encode;

local b64url = { ["+"] = "-", ["/"] = "_", ["="] = "" };
local function b64url_random(len)
	return (s_gsub(base64_encode(random_bytes(len)), "[+/=]", b64url));
end

return {
	short =  function () return b64url_random(6); end;
	medium = function () return b64url_random(12); end;
	long =   function () return b64url_random(24); end;
	custom = function (size)
		return function () return b64url_random(size); end;
	end;
}