File

util/hex.lua @ 12520:bb5f772b3189 0.12

util.prosodyctl.check: Remove now redundant unbound config tweak This is now done in net.unbound itself Turning it back on in the config may still cause the problem of entries there masking the DNS values.
author Kim Alvefur <zash@zash.se>
date Thu, 26 May 2022 13:03:58 +0200
parent 12355:a0ff5c438e9d
line wrap: on
line source

local s_char = string.char;
local s_format = string.format;
local s_gsub = string.gsub;
local s_lower = string.lower;

local char_to_hex = {};
local hex_to_char = {};

do
	local char, hex;
	for i = 0,255 do
		char, hex = s_char(i), s_format("%02x", i);
		char_to_hex[char] = hex;
		hex_to_char[hex] = char;
	end
end

local function to(s)
	return (s_gsub(s, ".", char_to_hex));
end

local function from(s)
	return (s_gsub(s_lower(s), "%X*(%x%x)%X*", hex_to_char));
end

return {
	encode = to, decode = from;
	-- COMPAT w/pre-0.12:
	to = to, from = from;
};