prosody-modules
db5128d1a16c
mod_turncredentials/mod_turncredentials.lua

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mod_turncredentials/mod_turncredentials.lua @ 5939:db5128d1a16c

mod_report_forward: Fix traceback when reporting a specific message (thanks singpolyma)
author Matthew Wild <mwild1@gmail.com>
date Thu, 30 May 2024 17:55:07 +0100
parent 3977:bbfcd786cc78
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95ab35ef52ba mod_turncredentials: XEP-0215 implementation for time-limited turn credentials
Philipp Hancke <fippo@goodadvice.pages.de>
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1 -- XEP-0215 implementation for time-limited turn credentials
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2 -- Copyright (C) 2012-2013 Philipp Hancke
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3 -- This file is MIT/X11 licensed.
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5 local st = require "util.stanza";
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6 local hmac_sha1 = require "util.hashes".hmac_sha1;
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7 local base64 = require "util.encodings".base64;
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8 local os_time = os.time;
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9 local datetime = require "util.datetime".datetime;
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10 local secret = module:get_option_string("turncredentials_secret");
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11 local host = module:get_option_string("turncredentials_host"); -- use ip addresses here to avoid further dns lookup latency
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12 local port = module:get_option_number("turncredentials_port", 3478);
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13 local ttl = module:get_option_number("turncredentials_ttl", 86400);
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14 if not (secret and host) then
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15 module:log("error", "turncredentials not configured");
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16 return;
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17 end
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18
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19 module:add_feature("urn:xmpp:extdisco:1");
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21 module:hook("iq-get/host/urn:xmpp:extdisco:1:services", function(event)
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22 local origin, stanza = event.origin, event.stanza;
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23 if origin.type ~= "c2s" then
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24 return;
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25 end
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26 local expires_at = os_time() + ttl;
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27 local userpart = tostring(expires_at);
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28 local nonce = base64.encode(hmac_sha1(secret, tostring(userpart), false));
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29 origin.send(st.reply(stanza):tag("services", {xmlns = "urn:xmpp:extdisco:1"})
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30 :tag("service", { type = "stun", host = host, port = ("%d"):format(port) }):up()
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31 :tag("service", { type = "turn", host = host, port = ("%d"):format(port), username = userpart, password = nonce, ttl = ("%d"):format(ttl) }):up()
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32 );
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33 return true;
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34 end);
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36 module:add_feature("urn:xmpp:extdisco:2");
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38 module:hook("iq-get/host/urn:xmpp:extdisco:2:services", function(event)
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39 local origin, stanza = event.origin, event.stanza;
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40 if origin.type ~= "c2s" then
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41 return;
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42 end
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43 local expires_at = os_time() + ttl;
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44 local userpart = tostring(expires_at);
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45 local nonce = base64.encode(hmac_sha1(secret, tostring(userpart), false));
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46 origin.send(st.reply(stanza):tag("services", {xmlns = "urn:xmpp:extdisco:2"})
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47 :tag("service", { type = "stun", transport = "udp", host = host, port = ("%d"):format(port) }):up()
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48 :tag("service", { type = "stun", transport = "tcp", host = host, port = ("%d"):format(port) }):up()
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49 :tag("service", { type = "turn", transport = "udp", host = host, port = ("%d"):format(port), username = userpart, password = nonce, expires = datetime(expires_at), restricted = "1" }):up()
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50 :tag("service", { type = "turn", transport = "tcp", host = host, port = ("%d"):format(port), username = userpart, password = nonce, expires = datetime(expires_at), restricted = "1" }):up()
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51 );
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52 return true;
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53 end);