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annotate mod_srvinjection/mod_srvinjection.lua @ 111:3de60860adca

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mod_ircd: Initial commit of a wonderfully hacky but working IRC->XMPP interface for Prosody
author Matthew Wild <mwild1@gmail.com>
date Wed, 23 Dec 2009 14:22:02 +0000
parents 2d03350613c4
children e4d5a1d3ff44
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1
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2 module.host = "*";
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3
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4 local adns = require "net.adns";
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5
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6 local map = module:get_option("srvinjection") or {};
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8 for host, mapping in pairs(map) do
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9 if type(mapping) == "table" and type(mapping[1]) == "string" and (type(mapping[2]) == "number") then
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10 local connecthost, connectport = mapping[1], mapping[2] or 5269;
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11 map[host] = {{
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12 srv = {
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13 target = connecthost..".";
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14 port = connectport;
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15 priority = 1;
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16 weight = 0;
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17 };
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18 }};
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19 else
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20 module:log("warn", "Ignoring invalid SRV injection for host '%s'", host);
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21 map[host] = nil;
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22 end
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23 end
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24
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25 local original_lookup = adns.lookup;
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26 function adns.lookup(handler, qname, qtype, qclass)
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27 if qtype == "SRV" then
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28 local host = qname:match("^_xmpp%-server%._tcp%.(.*)%.$");
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29 local mapping = map[host];
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30 if mapping then
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31 handler(mapping);
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32 return;
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33 end
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34 elseif qtype == "A" and (qname == "localhost." or qname == "127.0.0.1.") then
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35 handler({{ a = "127.0.0.1" }});
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36 return;
96
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37 end
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38 return original_lookup(handler, qname, qtype, qclass);
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39 end
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40
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41 function module.unload()
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42 adns.lookup = original_lookup;
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43 end