File

util/random.lua @ 13076:f4e33d17eaa8

mod_tls: Drop request for client certificates on outgoing connections It is the other end who should request client certificates for these connections, we only need to send ours. Hopefully this was treated as a noop, so probably no harm in keeping it. But hey, spring cleaning? :)
author Kim Alvefur <zash@zash.se>
date Wed, 19 Apr 2023 11:14:11 +0200
parent 12975:d10957394a3c
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-- Prosody IM
-- Copyright (C) 2008-2014 Matthew Wild
-- Copyright (C) 2008-2014 Waqas Hussain
--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--

local ok, crand = pcall(require, "prosody.util.crand");
if ok and pcall(crand.bytes, 1) then return crand; end

local urandom, urandom_err = io.open("/dev/urandom", "r");

local function bytes(n)
	local data, err = urandom:read(n);
	if not data then
		if err then
			error("Unable to retrieve data from secure random number generator (/dev/urandom): "..tostring(err));
		else
			error("Secure random number generator (/dev/urandom) returned an end-of-file condition");
		end
	end
	return data;
end

if not urandom then
	function bytes()
		error("Unable to obtain a secure random number generator, please see https://prosody.im/doc/random ("..urandom_err..")");
	end
end

return {
	bytes = bytes;
	_source = "/dev/urandom";
};