prosody
fc97319ef48e
util/random.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

File

util/random.lua @ 13758:fc97319ef48e 13.0

util.sasl: Preserve 'userdata' field between clones The :clean_clone() method is designed to provide a new cloned SASL handler, to be used when starting a fresh SASL negotiation on an existing connection. The userdata field is currently populated by mod_saslauth with the "read-only" information that the channel binding methods need to do their stuff. When :clean_clone() does not preserve this, it causes tracebacks in the cb profile handlers due to the property being nil. This does mean that SASL handlers should now not be reused (even when cloned) across different connections, if they ever could.
author Matthew Wild <mwild1@gmail.com>
date Thu, 06 Mar 2025 13:34:37 +0000
parent 12975:d10957394a3c
line wrap: on
line source

-- 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";
};