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mod_pubsub_feeds/feeds.lib.lua @ 5193:2bb29ece216b
mod_http_oauth2: Implement stateless dynamic client registration
Replaces previous explicit registration that required either the
additional module mod_adhoc_oauth2_client or manually editing the
database. That method was enough to have something to test with, but
would not probably not scale easily.
Dynamic client registration allows creating clients on the fly, which
may be even easier in theory.
In order to not allow basically unauthenticated writes to the database,
we implement a stateless model here.
per_host_key := HMAC(config -> oauth2_registration_key, hostname)
client_id := JWT { client metadata } signed with per_host_key
client_secret := HMAC(per_host_key, client_id)
This should ensure everything we need to know is part of the client_id,
allowing redirects etc to be validated, and the client_secret can be
validated with only the client_id and the per_host_key.
A nonce injected into the client_id JWT should ensure nobody can submit
the same client metadata and retrieve the same client_secret
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Fri, 03 Mar 2023 21:14:19 +0100 |
parent | 4428:b328ca621ba6 |
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local st = require "util.stanza"; -- RSS->Atom translator -- http://code.matthewwild.co.uk/lua-feeds/ -- Helpers to translate item child elements local rss2atom = {}; function rss2atom.title(atom_entry, tag) atom_entry:tag("title"):text(tag:get_text()):up(); end function rss2atom.link(atom_entry, tag) atom_entry:tag("link", { href = tag:get_text() }):up(); end function rss2atom.enclosure(atom_entry, tag) atom_entry:tag("link", { rel = "enclosure", href = tag.attr.url, type = tag.attr.type, length = tag.attr.length }):up(); end function rss2atom.author(atom_entry, tag) atom_entry:tag("author") :tag("email"):text(tag:get_text()):up() :up(); end function rss2atom.guid(atom_entry, tag) atom_entry:tag("id"):text(tag:get_text()):up(); end function rss2atom.category(atom_entry, tag) atom_entry:tag("category", { term = tag:get_text(), scheme = tag.attr.domain }):up(); end function rss2atom.description(atom_entry, tag) atom_entry:tag("summary"):text(tag:get_text()):up(); end local months = { jan = "01", feb = "02", mar = "03", apr = "04", may = "05", jun = "06"; jul = "07", aug = "08", sep = "09", oct = "10", nov = "11", dec = "12"; }; function rss2atom.pubDate(atom_entry, tag) local pubdate = tag:get_text():gsub("^%a+,", ""):gsub("^%s*", ""); local date, month, year, hour, minute, second, zone = pubdate:match("^(%d%d?) (%a+) (%d+) (%d+):(%d+):?(%d*) ?(.*)$"); if not date then return; end if #date == 1 then date = "0"..date; end month = months[month:sub(1,3):lower()]; if #year == 2 then -- GAH! if tonumber(year) > 80 then year = "19"..year; else year = "20"..year; end end if zone == "UT" or zone == "GMT" then zone = "Z"; end if #second == 0 then second = "00"; end local date_string = string.format("%s-%s-%sT%s:%s:%s%s", year, month, date, hour, minute, second, zone); atom_entry:tag("published"):text(date_string):up(); end -- Translate a single item to atom local function translate_rss(rss_feed) local feed = st.stanza("feed", { xmlns = "http://www.w3.org/2005/Atom" }); local channel = rss_feed:get_child("channel"); -- TODO channel properties for item in channel:childtags("item") do feed:tag("entry"); for tag in item:childtags() do local translator = rss2atom[tag.name]; if translator then translator(feed, tag); end end -- Preserve Atom-namespaced items for atomtag in item:childtags(nil, "http://www.w3.org/2005/Atom") do feed:add_child(st.clone(atomtag)); end feed:reset(); end return feed; end return { translate_rss = translate_rss }