view mod_warn_legacy_tls/mod_warn_legacy_tls.lua @ 5264:d3ebaef1ea7a

mod_http_oauth2: Correctly verify OAuth client credentials on revocation Makes no sense to validate against username and password here, or using a token to revoke another token, or itself? In fact, upon further discussion, why do you need credentials to revoke a token? If you are not supposed to have the token, revoking it seems the most responsible thing to do with it, so it should be allowed, while if you are supposed to have it, you should be allowed to revoke it.
author Kim Alvefur <zash@zash.se>
date Tue, 21 Mar 2023 21:57:18 +0100
parents 406b32b50457
children
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local st = require"util.stanza";
local host = module.host;

local deprecated_protocols = module:get_option_set("legacy_tls_versions", { "SSLv3", "TLSv1", "TLSv1.1" });
local warning_message = module:get_option_string("legacy_tls_warning", "Your connection is encrypted using the %s protocol, which has known problems and will be disabled soon.  Please upgrade your client.");

module:hook("resource-bind", function (event)
	local session = event.session;
	module:log("debug", "mod_%s sees that %s logged in", module.name, session.username);

	local ok, protocol = pcall(function(session)
		return session.conn:socket():info"protocol";
	end, session);
	if not ok then
		module:log("debug", "Could not determine TLS version: %s", protocol);
	elseif deprecated_protocols:contains(protocol) then
		session.log("warn", "Uses %s", protocol);
		module:add_timer(15, function ()
			if session.type == "c2s" and session.resource then
				session.send(st.message({ from = host, type = "headline", to = session.full_jid }, warning_message:format(protocol)));
			end
		end);
	else
		module:log("debug", "Using acceptable TLS version: %s", protocol);
	end
end);