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util/id.lua@550f506de75a (annotated)

util/id.lua

Thu, 03 Dec 2020 17:05:27 +0000

author

Matthew Wild <mwild1@gmail.com>

date

Thu, 03 Dec 2020 17:05:27 +0000

changeset 0

550f506de75a

permissions

-rw-r--r--

Initial commit

0 550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	1	-- Prosody IM
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	2	-- Copyright (C) 2008-2017 Matthew Wild
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	3	-- Copyright (C) 2008-2017 Waqas Hussain
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	4	-- Copyright (C) 2008-2017 Kim Alvefur
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	5	--
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	6	-- This project is MIT/X11 licensed. Please see the
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	7	-- COPYING file in the source package for more information.
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	8	--
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	9
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	10	local s_gsub = string.gsub;
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	11	local random_bytes = require "util.random".bytes;
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	12	local base64_encode = require "util.encodings".base64.encode;
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	13
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	14	local b64url = { ["+"] = "-", ["/"] = "_", ["="] = "" };
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	15	local function b64url_random(len)
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	16	return (s_gsub(base64_encode(random_bytes(len)), "[+/=]", b64url));
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	17	end
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	18
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	19	return {
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	20	short = function () return b64url_random(6); end;
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	21	medium = function () return b64url_random(12); end;
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	22	long = function () return b64url_random(24); end;
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	23	custom = function (size)
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	24	return function () return b64url_random(size); end;
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	25	end;
550f506de75a Initial commit Matthew Wild <mwild1@gmail.com> parents: diff changeset	26	}