annotate mod_turncredentials/mod_turncredentials.lua @ 3492:f59334da6df9

mod_conversejs: Show fallback text if converse.js fails to load (thanks MattJ) This can happen if javascript is enabled but 3rd party resources are blocked, or some other error happened.
author Kim Alvefur <zash@zash.se>
date Tue, 19 Mar 2019 19:43:13 +0100
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95ab35ef52ba mod_turncredentials: XEP-0215 implementation for time-limited turn credentials
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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 secret = module:get_option_string("turncredentials_secret");
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10 local host = module:get_option_string("turncredentials_host"); -- use ip addresses here to avoid further dns lookup latency
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11 local port = module:get_option_number("turncredentials_port", 3478);
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12 local ttl = module:get_option_number("turncredentials_ttl", 86400);
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13 if not (secret and host) then
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14 module:log("error", "turncredentials not configured");
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15 return;
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16 end
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afae347928d8 mod_turncredentials: Advertise the XEP-0215 feature (thanks Gryffus)
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18 module:add_feature("urn:xmpp:extdisco:1");
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20 module:hook("iq-get/host/urn:xmpp:extdisco:1:services", function(event)
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21 local origin, stanza = event.origin, event.stanza;
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22 if origin.type ~= "c2s" then
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23 return;
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24 end
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25 local now = os_time() + ttl;
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26 local userpart = tostring(now);
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27 local nonce = base64.encode(hmac_sha1(secret, tostring(userpart), false));
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28 origin.send(st.reply(stanza):tag("services", {xmlns = "urn:xmpp:extdisco:1"})
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29 :tag("service", { type = "stun", host = host, port = port }):up()
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30 :tag("service", { type = "turn", host = host, port = port, username = userpart, password = nonce, ttl = ttl}):up()
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31 );
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32 return true;
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33 end);