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annotate mod_turncredentials/mod_turncredentials.lua @ 2494:d300ae5dba87

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mod_smacks: Fix some bugs with smacks-ack-delayed event triggering. The old code had several flaws which are addressed here. First of all this fixes the if statement guarding the event generation There where some timing glitches addressed by this commit as well.
author tmolitor <thilo@eightysoft.de>
date Sun, 12 Feb 2017 21:23:22 +0100
parents 7dbde05b48a9
children deb5ece56c49
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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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2da546139cb5 mod_turncredentials: Import HMAC from util.hashes
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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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0ae2c250f274 mod_turncredentials: Use type-specific get_option() methods where appropriate, and pass in default values
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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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6695c3098025 mod_turncredentials: Use iq-get event, to save checking attr.type manually
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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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0b6b33688b75 mod_turncredentials: use smarter timestamp expiry from draft-uberti-behave-turn-rest-00
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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);