prosody-modules
6d0574bfbf5d
mod_pubsub_feeds/feeds.lib.lua

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mod_pubsub_feeds/feeds.lib.lua @ 5600:6d0574bfbf5d

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>
date Thu, 13 Jul 2023 23:26:02 +0200
parent 4428:b328ca621ba6
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1 local st = require "util.stanza";
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2 -- RSS->Atom translator
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3 -- http://code.matthewwild.co.uk/lua-feeds/
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4
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5 -- Helpers to translate item child elements
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6 local rss2atom = {};
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7 function rss2atom.title(atom_entry, tag)
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8 atom_entry:tag("title"):text(tag:get_text()):up();
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9 end
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10
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11 function rss2atom.link(atom_entry, tag)
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12 atom_entry:tag("link", { href = tag:get_text() }):up();
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13 end
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14
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15 function rss2atom.enclosure(atom_entry, tag)
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16 atom_entry:tag("link", { rel = "enclosure", href = tag.attr.url, type = tag.attr.type, length = tag.attr.length }):up();
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17 end
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19 function rss2atom.author(atom_entry, tag)
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20 atom_entry:tag("author")
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21 :tag("email"):text(tag:get_text()):up()
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22 :up();
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23 end
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25 function rss2atom.guid(atom_entry, tag)
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26 atom_entry:tag("id"):text(tag:get_text()):up();
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27 end
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29 function rss2atom.category(atom_entry, tag)
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30 atom_entry:tag("category", { term = tag:get_text(), scheme = tag.attr.domain }):up();
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31 end
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33 function rss2atom.description(atom_entry, tag)
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34 atom_entry:tag("summary"):text(tag:get_text()):up();
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35 end
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37 local months = {
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38 jan = "01", feb = "02", mar = "03", apr = "04", may = "05", jun = "06";
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39 jul = "07", aug = "08", sep = "09", oct = "10", nov = "11", dec = "12";
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40 };
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42 function rss2atom.pubDate(atom_entry, tag)
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43 local pubdate = tag:get_text():gsub("^%a+,", ""):gsub("^%s*", "");
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44 local date, month, year, hour, minute, second, zone =
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45 pubdate:match("^(%d%d?) (%a+) (%d+) (%d+):(%d+):?(%d*) ?(.*)$");
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46 if not date then return; end
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47 if #date == 1 then
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48 date = "0"..date;
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49 end
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50 month = months[month:sub(1,3):lower()];
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51 if #year == 2 then -- GAH!
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52 if tonumber(year) > 80 then
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53 year = "19"..year;
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54 else
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55 year = "20"..year;
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56 end
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57 end
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58 if zone == "UT" or zone == "GMT" then zone = "Z"; end
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59 if #second == 0 then
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60 second = "00";
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61 end
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62 local date_string = string.format("%s-%s-%sT%s:%s:%s%s", year, month, date, hour, minute, second, zone);
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63 atom_entry:tag("published"):text(date_string):up();
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64 end
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65
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66 -- Translate a single item to atom
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67 local function translate_rss(rss_feed)
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68 local feed = st.stanza("feed", { xmlns = "http://www.w3.org/2005/Atom" });
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69 local channel = rss_feed:get_child("channel");
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70 -- TODO channel properties
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71 for item in channel:childtags("item") do
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72 feed:tag("entry");
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73 for tag in item:childtags() do
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74 local translator = rss2atom[tag.name];
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75 if translator then
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76 translator(feed, tag);
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77 end
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78 end
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79 -- Preserve Atom-namespaced items
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80 for atomtag in item:childtags(nil, "http://www.w3.org/2005/Atom") do
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81 feed:add_child(st.clone(atomtag));
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82 end
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83 feed:reset();
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84 end
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85 return feed;
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86 end
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87
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88 return { translate_rss = translate_rss }