prosody
30a91d819913
util/random.lua

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util/random.lua @ 13665:30a91d819913 13.0

mod_account_activity: Record an account's last activity timestamp This is similar to mod_lastlog/mod_lastlog2. Some functionality was dropped, compared to mod_lastlog2. These features (recording the IP address, or tracking the timestamp of multiple events) are handled better by the mod_audit family of modules. For example, those correctly handle multiple logins, IP address truncation, and data retention policies. The "registered" timestamp from mod_lastlog2 was also dropped, as this has been stored in account_details by Prosody itself since at least 0.12 already.
author Matthew Wild <mwild1@gmail.com>
date Wed, 12 Feb 2025 12:33:45 +0000 (7 weeks ago)
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";
};