view mod_ipcheck/mod_ipcheck.lua @ 4976:75b6e5df65f9

various: Improve error reporting if missing file server module on 0.12 If there is some error loading net.http.files then it would be swallowed by the pcall and then it would proceed to trying mod_http_files, which might cause unexpected behavior on 0.12 Ref #1765
author Kim Alvefur <zash@zash.se>
date Mon, 18 Jul 2022 22:47:54 +0200
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);