view mod_tls_policy/mod_tls_policy.lua @ 5406:b86d80e21c60

mod_http_oauth2: Validate consistency of response and grant types Ensure that these correlated fields make sense per RFC 7591 ยง 2.1, even though we currently only check the response type during authorization. This could probably all be deleted if (when!) we remove the implicit grant, since then these things don't make any sense anymore.
author Kim Alvefur <zash@zash.se>
date Tue, 02 May 2023 16:34:31 +0200
parents 1b701f208b1b
children
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assert(require"ssl.core".info, "Incompatible LuaSec version");

local function hook(event_name, typ, policy)
	if not policy then return end
	if policy == "FS" then
		policy = { cipher = "^E?C?DHE%-" };
	elseif type(policy) == "string" then
		policy = { cipher = policy };
	end

	module:hook(event_name, function (event)
		local origin = event.origin;
		if origin.conn and origin.conn:ssl() then
			local info = origin.conn:socket():info();
			for key, what in pairs(policy) do
				module:log("debug", "Does info[%q] = %s match %s ?", key, tostring(info[key]), tostring(what));
				if (type(what) == "number" and what < info[key] ) or (type(what) == "string" and not info[key]:match(what)) then
					origin:close({ condition = "policy-violation", text = ("TLS %s '%s' not acceptable"):format(key, tostring(info[key])) });
					return false;
				end
				module:log("debug", "Seems so");
			end
			module:log("debug", "Policy matches");
		end
	end, 1000);
end

local policy = module:get_option(module.name, {});

if type(policy) == "string" then
	policy = { c2s = policy, s2s = policy };
end

hook("stream-features", "c2s", policy.c2s);
hook("s2s-stream-features", "s2sin", policy.s2sin or policy.s2s);
hook("stanza/http://etherx.jabber.org/streams:features", "s2sout", policy.s2sout or policy.s2s);