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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

-- Compatibility with clients and servers (i.e. ejabberd) that send vcard
-- requests to the full JID
--
-- https://support.process-one.net/browse/EJAB-1045

local jid_bare = require "util.jid".bare;
local st = require "util.stanza";
local core_process_stanza = prosody.core_process_stanza;

module:hook("iq/full", function(event)
	local stanza = event.stanza;
	local payload = stanza.tags[1];
	if payload and stanza.attr.type == "get" and payload.name == "vCard" and payload.attr.xmlns == "vcard-temp" then
		local fixed_stanza = st.clone(event.stanza);
		fixed_stanza.attr.to = jid_bare(stanza.attr.to);
		core_process_stanza(event.origin, fixed_stanza);
		return true;
	end
end, 1);