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annotate mod_auto156/mod_auto156.lua @ 5149:fa56ed2bacab

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mod_unified_push: Add support for multiple token backends, including stoage Now that we have ACLs by default, it is no longer necessary to be completely stateless. On 0.12, using storage has benefits over JWT, because it does not expose client JIDs to the push apps/services. In trunk, PASETO is stateless and does not expose client JIDs.
author Matthew Wild <mwild1@gmail.com>
date Sat, 14 Jan 2023 14:31:37 +0000
parents 5d494dba9c02
children
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1 -- Synthesize XEP-0156 JSON from DNS
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2 local array = require "util.array";
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3 local encodings = require "util.encodings";
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4 local json = require "util.json";
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5 local promise = require "util.promise";
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6
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7 local dns = require"net.adns".resolver();
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8
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9 local function check_dns(domain)
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10 return dns:lookup_promise("_xmppconnect." .. domain, "TXT");
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11 end
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12
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13 local function check_domain(domain)
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14 return promise.resolve(domain):next(encodings.stringprep.nameprep):next(encodings.idna.to_ascii):next(
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15 function(domain_A)
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16 if not domain_A then
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17 return promise.reject(400);
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18 else
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19 return domain_A;
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20 end
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21 end):next(check_dns):next(function(txt)
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22 local uris = array();
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23 for _, cm in ipairs(txt) do
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24 local kind, uri = tostring(cm.txt):match("^_xmpp%-client%-(%w+)=([hpstw]+s?://.*)");
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25 if kind then
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26 uris:push({rel = "urn:xmpp:alt-connections:" .. kind, href = uri});
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27 end
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28 end
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29 if #uris == 0 then
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30 return promise.reject(404);
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31 end
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32 return {links=uris};
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33 end);
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34 end
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35
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36 module:depends("http");
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37 module:provides("http", {
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38 route = {
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39 ["GET /*"] = function(_, domain)
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40 return check_domain(domain):next(function(altmethods)
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41 return {headers = {content_type = "application/json"}, body = json.encode(altmethods)};
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42 end);
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43 end,
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44 },
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45 });
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46
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47 function module.command(args)
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48 local async = require "util.async";
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49 for _, domain in ipairs(args) do
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50 print(assert(async.wait_for(check_domain(domain):next(json.encode))));
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51 end
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52 end