prosody
ac691f305ea7
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 @ 10833:ac691f305ea7

mod_csi_simple: Report whatever's not a stirng and not a stanza This is either dead code or actually a type error, but catching that should be the responsibility of the session.send function. This type check is left since everything after it assumes a stanza object. These last few commits aren't meant to change any behavior and it did mark things not stanzas as important, but those would have been mostly raw strings which are now specially handled.
author Kim Alvefur <zash@zash.se>
date Sun, 10 May 2020 23:12:33 +0200
parent 10016:af8c514e5cf7
child 12446:e54b8a5e35ad
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, "util.crand");
if ok 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";
};