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view mod_s2s_keysize_policy/mod_s2s_keysize_policy.lua @ 4931:13070c6a7ce8

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mod_http_muc_log: Fix exception on lack of trailing slash in room path A request to /room leads to the match call returning nil which in turn calls nodeprep(nil). In Prosody 0.11.x this does nothing and simply returns the nil, while in 0.12 it is an error. Now it redirects to the calendar view at /room/ - even for non-existant rooms. Discovered at a deployment with http_paths = { muc_log = "/" } and requests to /robots.txt and similar, which now result in a uses redirect before returning 404.
author Kim Alvefur <zash@zash.se>
date Fri, 22 Apr 2022 14:29:32 +0200
parents 27ffa6521d4e
children
line wrap: on
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-- mod_s2s_keysize_policy.lua
-- Requires LuaSec with this patch: https://github.com/brunoos/luasec/pull/12

module:set_global();

local datetime_parse = require"util.datetime".parse;
local pat = "^([JFMAONSD][ceupao][glptbvyncr])  ?(%d%d?) (%d%d):(%d%d):(%d%d) (%d%d%d%d) GMT$";
local months = {Jan=1,Feb=2,Mar=3,Apr=4,May=5,Jun=6,Jul=7,Aug=8,Sep=9,Oct=10,Nov=11,Dec=12};
local function parse_x509_datetime(s)
	local month, day, hour, min, sec, year = s:match(pat); month = months[month];
	return datetime_parse(("%04d-%02d-%02dT%02d:%02d:%02dZ"):format(year, month, day, hour, min, sec));
end

local weak_key_cutoff = datetime_parse("2014-01-01T00:00:00Z");

-- From RFC 4492
local weak_key_size = {
	RSA = 2048,
	DSA = 2048,
	DH  = 2048,
	EC  =  233,
}

module:hook("s2s-check-certificate", function(event)
	local host, session, cert = event.host, event.session, event.cert;
	if cert and cert.pubkey then
		local _, key_type, key_size = cert:pubkey();
		if key_size < ( weak_key_size[key_type] or 0 ) then
			local issued = parse_x509_datetime(cert:notbefore());
			if issued > weak_key_cutoff then
				session.log("warn", "%s has a %s-bit %s key issued after 31 December 2013, invalidating trust!", host, key_size, key_type);
				session.cert_chain_status = "invalid";
				session.cert_identity_status = "invalid";
			else
				session.log("warn", "%s has a %s-bit %s key", host, key_size, key_type);
			end
		else
			session.log("info", "%s has a %s-bit %s key", host, key_size, key_type);
		end
	end
end);