view mod_dwd/mod_dwd.lua @ 5139:449e4ca4de32

mod_unified_push: Remove dependency on trunk util.jwt (0.12 compat) This should allow the module to work on 0.12, while preserving expiry checking (which was not built in to 0.12's util.jwt).
author Matthew Wild <mwild1@gmail.com>
date Tue, 10 Jan 2023 16:34:21 +0000
parents 4e235e565693
children
line wrap: on
line source

local hosts = _G.hosts;
local st = require "util.stanza";
local nameprep = require "util.encodings".stringprep.nameprep;
local cert_verify_identity = require "util.x509".verify_identity;

module:hook("stanza/jabber:server:dialback:result", function(event)
	local origin, stanza = event.origin, event.stanza;

	if origin.cert_chain_status == "valid" and origin.type == "s2sin_unauthed" or origin.type == "s2sin" then
		local attr = stanza.attr;
		local to, from = nameprep(attr.to), nameprep(attr.from);

		local conn = origin.conn:socket()
		local cert;
		if conn.getpeercertificate then
			cert = conn:getpeercertificate()
		end

		if cert and hosts[to] and cert_verify_identity(from, "xmpp-server", cert) then

			-- COMPAT: ejabberd, gmail and perhaps others do not always set 'to' and 'from'
			-- on streams. We fill in the session's to/from here instead.
			if not origin.from_host then
				origin.from_host = from;
			end
			if not origin.to_host then
				origin.to_host = to;
			end

			module:log("info", "Accepting Dialback without Dialback for %s", from);
			module:fire_event("s2s-authenticated", { session = origin, host = from });
			origin.sends2s(
				st.stanza("db:result", { from = attr.to, to = attr.from, id = attr.id, type = "valid" }));

			return true;
		end
	end
end, 100);