prosody
d770435f0f84
util/id.lua

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Software / code / prosody

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util/id.lua @ 10936:d770435f0f84

util.argparse: Move exiting and error to util.startup It's not so nice to have a library that exits the entire application from under you, so this and the error reporting belongs in util.startup. The argparse code was originally in util.startup but moved out in 1196f1e8d178 but the error handling should have stayed.
author Kim Alvefur <zash@zash.se>
date Wed, 17 Jun 2020 19:32:12 +0200
parent 8016:9546c629289b
child 12110:b5b799a2a10c
line wrap: on
line source

-- 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;
}