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annotate mod_atom/mod_atom.lua @ 4249:64aa1d9d70ac

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mod_rest: Catch and log errors in callback promise chain From the code it looks like it should be possible to reply to an error stanza, but it did not. Turns out I was saved by my local developer mode module which throws errors if an attempt is made to create an errror reply to an error stanza. However nothing collects this error from the promise, so all I got was confusion.
author Kim Alvefur <zash@zash.se>
date Sun, 15 Nov 2020 16:25:49 +0100
parents 5dd505c39c4b
children
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4915b8223b07 mod_atom: Expose Microbloging PEP data over HTTP
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1 -- HTTP Access to PEP -> microblog
4915b8223b07 mod_atom: Expose Microbloging PEP data over HTTP
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2 -- By Kim Alvefur <zash@zash.se>
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3
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4 local mod_pep = module:depends"pep";
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5
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6 local um = require "core.usermanager";
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7 local nodeprep = require "util.encodings".stringprep.nodeprep;
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8 local st = require "util.stanza";
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9 local urlencode = require "util.http".urlencode;
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10
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11 module:depends("http")
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12 module:provides("http", {
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13 route = {
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14 ["GET /*"] = function (event, user)
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15 if user == "" then
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16 return [[<h1>Hello from mod_atom</h1><p>This module provides access to public microblogs of local users.</p>]];
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17 end;
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18
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19 local request, response = event.request, event.response;
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20 local actor = request.ip;
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21
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22 local prepped = nodeprep(user);
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23 if not prepped then return 400; end
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24 if prepped ~= user then
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25 response.headers.location = module:http_url() .. "/" .. urlencode(prepped);
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26 return 302;
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27 end
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28 if not um.user_exists(user, module.host) then
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29 return 404;
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30 end
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31
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32 local pubsub_service = mod_pep.get_pep_service(user);
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33 local ok, items = pubsub_service:get_items("urn:xmpp:microblog:0", actor);
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34 if ok then
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35 response.headers.content_type = "application/xml";
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36 local feed = st.stanza("feed", { xmlns = "http://www.w3.org/2005/Atom" })
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37 :text_tag("generator", "Prosody", { uri = "xmpp:prosody.im", version = prosody.version })
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38 :text_tag("title", pubsub_service.nodes["urn:xmpp:microblog:0"].config.title or "Microblog feed")
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39 :text_tag("subtitle", pubsub_service.nodes["urn:xmpp:microblog:0"].config.description)
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40 :tag("author")
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41 :text_tag("name", user)
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42 :text_tag("preferredUsername", user, { xmlns = "http://portablecontacts.net/spec/1.0" });
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43 local ok, _, nick = pubsub_service:get_last_item("http://jabber.org/protocol/nick", actor);
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44 if ok and nick then
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45 feed:text_tag("displayName", nick.tags[1][1], { xmlns = "http://portablecontacts.net/spec/1.0" });
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46 end
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47
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48 feed:reset();
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49
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50 for i = #items, 1, -1 do
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51 feed:add_direct_child(items[items[i]].tags[1]);
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52 end
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53 return tostring(feed);
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54 elseif items == "forbidden" then
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55 return 403;
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56 elseif items == "item-not-found" then
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57 return 404;
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58 end
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59 end;
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60 }
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61 });