Mercurial > prosody-modules
annotate mod_auto156/mod_auto156.lua @ 5593:6d0574bfbf5d
mod_client_management: Include software version in table (when known)
Showing software versions could be useful for statistical reasons, e.g.
determining how quickly (or not) users upgrade, but most importantly for
revoking vulnerable clients versions in case of a security issue.
author | Kim Alvefur <zash@zash.se> |
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date | Thu, 13 Jul 2023 23:26:02 +0200 |
parents | 5d494dba9c02 |
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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 |