prosody
b8cc1b3e7fb6
util/id.lua

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util/id.lua @ 11861:b8cc1b3e7fb6

doap: Update versions of XEPs Makes it easier to find XEPs that have had new revisions since we last looked at them and the corresponding code. A review of changelogs between these versions point to mostly editorial changes or otherwise without warrant for code changes.
author Kim Alvefur <zash@zash.se>
date Thu, 21 Oct 2021 20:58:19 +0200
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;
}