Software / code / prosody-modules
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mod_auto156/mod_auto156.lua @ 5119:048e339706ba
mod_rest: Remove manual reference expansion in schema
This hack was originally added to reduce the number of definitions of
common attributes (type, to, from etc) and payloads (e.g. delay). This
predated pointers and references, and until now was needed because
parsing picked out the correct stanza kind from the schema, which broke
internal references.
Removing this hack paves the way for allowing the schema to be
configured or customized more easily.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Tue, 20 Dec 2022 21:48:28 +0100 |
| parent | 4614:5d494dba9c02 |
| rev | line source |
|---|---|
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mod_auto156: Queries for XEP-0156 TXT records and prints in JSON format
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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 |
