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 = { key = "DH$" }; elseif type(policy) == "string" then policy = { cipher = policy }; end module:hook(event_name, function (event) local origin = event.origin; if origin.encrypted 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);