prosody
b9d369f77121
util/random.lua

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util/random.lua @ 13651:b9d369f77121

prosodyctl: Further deprecate start/stop/restart commands when installed Despite the warning we introduced, many people continue to try using prosodyctl to manage Prosody in the presence of systemctl (e.g. #1688). Also, despite the warning, prosodyctl proceeded with the operation. This means the commands could be invoked by accident, and cause a situation that is hard to recover from (needing to manually track down stray processes). This commit disables all the problematic commands by default, but this can still be overridden using --force or via a config option. We only perform this check when we believe Prosody has been "installed" for system-wide use (i.e. running it from a source directory is still supported).
author Matthew Wild <mwild1@gmail.com>
date Thu, 06 Feb 2025 14:51:31 +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";
};