prosody-modules
ca3c2d11823c
mod_turncredentials/mod_turncredentials.lua

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mod_turncredentials/mod_turncredentials.lua @ 5571:ca3c2d11823c

mod_pubsub_feeds: Track latest timestamp seen in feeds instead of last poll This should ensure that an entry that has a publish timestmap after the previously oldest post, but before the time of the last poll check, is published to the node. Previously if an entry would be skipped if it was published at 13:00 with a timestamp of 12:30, where the last poll was at 12:45. For feeds that lack a timestamp, it now looks for the first post that is not published, assuming that the feed is in reverse chronological order, then iterates back up from there.
author Kim Alvefur <zash@zash.se>
date Sun, 25 Jun 2023 16:27:55 +0200
parent 3977:bbfcd786cc78
line wrap: on
line source

-- XEP-0215 implementation for time-limited turn credentials
-- Copyright (C) 2012-2013 Philipp Hancke
-- This file is MIT/X11 licensed.

local st = require "util.stanza";
local hmac_sha1 = require "util.hashes".hmac_sha1;
local base64 = require "util.encodings".base64;
local os_time = os.time;
local datetime = require "util.datetime".datetime;
local secret = module:get_option_string("turncredentials_secret");
local host = module:get_option_string("turncredentials_host"); -- use ip addresses here to avoid further dns lookup latency
local port = module:get_option_number("turncredentials_port", 3478);
local ttl = module:get_option_number("turncredentials_ttl", 86400);
if not (secret and host) then
    module:log("error", "turncredentials not configured");
    return;
end

module:add_feature("urn:xmpp:extdisco:1");

module:hook("iq-get/host/urn:xmpp:extdisco:1:services", function(event)
    local origin, stanza = event.origin, event.stanza;
    if origin.type ~= "c2s" then
        return;
    end
    local expires_at = os_time() + ttl;
    local userpart = tostring(expires_at);
    local nonce = base64.encode(hmac_sha1(secret, tostring(userpart), false));
    origin.send(st.reply(stanza):tag("services", {xmlns = "urn:xmpp:extdisco:1"})
        :tag("service", { type = "stun", host = host, port = ("%d"):format(port) }):up()
        :tag("service", { type = "turn", host = host, port = ("%d"):format(port), username = userpart, password = nonce, ttl = ("%d"):format(ttl) }):up()
    );
    return true;
end);

module:add_feature("urn:xmpp:extdisco:2");

module:hook("iq-get/host/urn:xmpp:extdisco:2:services", function(event)
    local origin, stanza = event.origin, event.stanza;
    if origin.type ~= "c2s" then
        return;
    end
    local expires_at = os_time() + ttl;
    local userpart = tostring(expires_at);
    local nonce = base64.encode(hmac_sha1(secret, tostring(userpart), false));
    origin.send(st.reply(stanza):tag("services", {xmlns = "urn:xmpp:extdisco:2"})
        :tag("service", { type = "stun", transport = "udp", host = host, port = ("%d"):format(port) }):up()
        :tag("service", { type = "stun", transport = "tcp", host = host, port = ("%d"):format(port) }):up()
        :tag("service", { type = "turn", transport = "udp", host = host, port = ("%d"):format(port), username = userpart, password = nonce, expires = datetime(expires_at), restricted = "1"  }):up()
        :tag("service", { type = "turn", transport = "tcp", host = host, port = ("%d"):format(port), username = userpart, password = nonce, expires = datetime(expires_at), restricted = "1"  }):up()
    );
    return true;
end);