File

mod_srvinjection/mod_srvinjection.lua @ 3571:f5ea0b886c7c

mod_storage_xmlarchive: Limit search to smallest time range in case of inexact match This should improve performance in case the exact days in the 'start' and 'end' range are missing from the index.
author Kim Alvefur <zash@zash.se>
date Fri, 03 May 2019 18:59:38 +0200
parent 1592:47fb4f36dacd
line wrap: on
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module:set_global();

local adns = require "net.adns";

local map_config = module:get_option("srvinjection") or {};
local map = module:shared "s2s_map"

for host, mapping in pairs(map_config) do
	if type(mapping) == "table" and type(mapping[1]) == "string" and (type(mapping[2]) == "number") then
		local connecthost, connectport = mapping[1], mapping[2] or 5269;
		map[host] = {{
			srv = {
				target = connecthost..".";
				port = connectport;
				priority = 1;
				weight = 0;
			};
		}};
	else
		module:log("warn", "Ignoring invalid SRV injection for host '%s'", host);
		map[host] = nil;
	end
end

local original_lookup = adns.lookup;
function adns.lookup(handler, qname, qtype, qclass)
	if qtype == "SRV" then
		local host = qname:match("^_xmpp%-server%._tcp%.(.*)%.$");
		local mapping = map[host] or map["*"];
		if mapping then
			handler(mapping);
			return;
		end
	elseif qtype == "A" then
		if (qname == "localhost." or qname == "127.0.0.1.") then
			handler({{ a = "127.0.0.1" }});
			return;
		end
		local ip = qname:match("^(%d+.%d+.%d+.%d+).$");
		if ip then
			handler({{ a = ip }});
			return;
		end
	end
	return original_lookup(handler, qname, qtype, qclass);
end

function module.unload()
	adns.lookup = original_lookup;
end