view mod_ipcheck/mod_ipcheck.lua @ 5186:fa3059e653fa

mod_http_oauth2: Implement the Implicit flow Everyone says this is insecure and bad, but it's also the only thing that makes sense for e.g. pure JavaScript clients, but hey implement this even more complicated thing instead!
author Kim Alvefur <zash@zash.se>
date Thu, 02 Mar 2023 22:06:50 +0100
parents b0628bc93acf
children
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-- mod_ipcheck.lua
-- Implementation of XEP-0279: Server IP Check <http://xmpp.org/extensions/xep-0279.html>

local st = require "util.stanza";

module:add_feature("urn:xmpp:sic:0");

module:hook("iq-get/bare/urn:xmpp:sic:0:ip", function(event)
	local origin, stanza = event.origin, event.stanza;
	if stanza.attr.to then
		origin.send(st.error_reply(stanza, "auth", "forbidden", "You can only ask about your own IP address"));
	elseif origin.ip then
		origin.send(st.reply(stanza):tag("ip", {xmlns='urn:xmpp:sic:0'}):text(origin.ip));
	else
		-- IP addresses should normally be available, but in case they are not
		origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "IP address for this session is not available"));
	end
	return true;
end);

module:add_feature("urn:xmpp:sic:1");

module:hook("iq-get/bare/urn:xmpp:sic:1:address", function(event)
	local origin, stanza = event.origin, event.stanza;
	if stanza.attr.to then
		origin.send(st.error_reply(stanza, "auth", "forbidden", "You can only ask about your own IP address"));
	elseif origin.ip then
		local reply = st.reply(stanza):tag("address", {xmlns='urn:xmpp:sic:1'})
			:tag("ip"):text(origin.ip):up()
		if origin.conn and origin.conn.port then -- server_event
			reply:tag("port"):text(tostring(origin.conn:port()))
		elseif origin.conn and origin.conn.clientport then -- server_select
			reply:tag("port"):text(tostring(origin.conn:clientport()))
		end
		origin.send(reply);
	else
		-- IP addresses should normally be available, but in case they are not
		origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "IP address for this session is not available"));
	end
	return true;
end);